CN103811157B

CN103811157B - Coil device

Info

Publication number: CN103811157B
Application number: CN201310531175.0A
Authority: CN
Inventors: 岩仓正明; 山田稔; 小林三; 小林一三; 古市朋广; 北岛伸夫
Original assignee: TDK Corp
Current assignee: TDK Corp
Priority date: 2012-11-02
Filing date: 2013-10-31
Publication date: 2016-08-17
Anticipated expiration: 2033-10-31
Also published as: CN103811157A

Abstract

It is an object of the invention to provide and a kind of do not make core crack etc. in the case of using as bigger transformator etc. and the coil device of having excellent magnetic properties.Wherein, each form of a pair segmentation core (12a, 12a) that middle foot (14) and pedestal (13) are formed at separation with a pair batter (16) of E core (12) is separated at the divisional plane (12b, 12b) of segmentation core (12a, 12a).At divisional plane (12b, 12b) each other, being formed with the gap (15) of regulation, the middle foot (14) of separation is inserted into the through hole (44a) of skeleton (40).

Description

Coil device

Technical field

The present invention relates to a kind of bigger transformator used as the purposes of the most vehicle-mounted grade also be able to very well The coil device that ground uses.

Background technology

As in the coil device that transformator etc. uses, such as, as shown in following patent documentation 1, sometimes use resin seal line Coil apparatus.

On the other hand, as the coil device using the bigger transformator etc. that used in the purposes such as vehicle-mounted Core, studies use E core for the reason of miniaturization, reduction noise, cost degradation and operability etc..

But, in the case of using E core, present inventor etc. is found that, due to outside the middle foot and core of core The difference of thermal diffusivity between foot and to produce the collection of the thermal stress caused by the reasons such as temperature difference medium, have the middle foot at E core The technical problem easily cracked with the cross part of pedestal.

Prior art literature

Patent documentation

Patent documentation 1: Japanese Unexamined Patent Publication 2010-267932 publication

Summary of the invention

Invent technical problem to be solved

The present invention makes in view of such present situation, its object is to provide a kind of as bigger transformator Etc. not making core crack etc. in the case of using and the coil device of having excellent magnetic properties.

Solve the means of technical problem

In order to achieve the above object, the coil device involved by the 1st viewpoint of the present invention, it is characterised in that be that there is E type Core, skeleton and be arranged on the coil of periphery of described skeleton, described E core has: pedestal, with orthogonal 1st axle, The plane comprising described 1st axle and the 2nd axle in the middle of 2 axles and the 3rd axle is almost parallel；A pair batter, along described 2nd direction of principal axis from The two ends of described pedestal are prominent to described 3rd direction of principal axis respectively；And middle foot, between the pair of batter, from described pedestal Prominent to described 3rd direction of principal axis, described middle foot and pedestal are formed at each of a pair segmentation core of separation with batter described in a pair Form separated at the divisional plane of described segmentation core, at described divisional plane each other, be formed with the gap of regulation, separate Described middle foot be inserted into the through hole of described skeleton.

Experiment according to the present inventor etc., it is thus identified that by making structure as described above, thus with use existing E type The situation of core compares, it is possible to by the stress of locality produced by the cross part of middle foot and pedestal be reduced to about 1/2 with Lower left and right.Therefore, in coil device involved in the present invention, even if producing thermal stress at core, it is also possible to suppression is split effectively Stricture of vaginas etc. produce.

It addition, middle foot and pedestal on E core are separated, in the formation each other of divisional plane at the divisional plane of segmentation core There is the gap of regulation, thus thermal diffusivity also increases.Additionally, in the present invention, by combination, each there is simple shape A pair segmentation core constitute E core, the manufacture of core also becomes easy, additionally it is possible to seek the reduction of manufacturing cost.And, this The E core of bright involved Splittable has the magnetic line of force as E core on the whole, thus the magnetic characteristic of core and general E Core is equal.

Further, in the present invention, it is stipulated that gap be preferably 0.05～5mm, more preferably 0.1～3mm.These regulations Gap segmentation core divisional plane be the most not necessarily necessary be formed at whole.

Preferably, described 3rd axial at least section below is contained in shell along described coil device, and connect Touch in heat transmission resin.By being contacted with heat transmission resin, the thermal diffusivity of foot in improving further.

Preferably, be located at least in described middle foot prominent front end divisional plane each other, be filled with described heat radiation Use resin.Especially by making the heat transmission resin prominent fore-end between middle foot, thus this part is dispelled the heat effectively.

The coil device of the present invention can have E core described in a pair, and alternatively, described in a pair, the segmentation of E core is each Middle foot is inserted into the through hole of described skeleton from described 3rd axial side opposite each other, at described 3rd axle of described through hole In the way in direction, the prominent front end of the described middle foot of segmentation is mutually relative, in the outside of described skeleton, and E core described in a pair The batter separated docks each other.

Even if in the case of employing a pair E core like this, in the present invention, stress relaxation properties and thermal diffusivity are also Excellent, and contribute to the reduction of manufacturing cost.

The coil device of the present invention can have described E core and I core, and alternatively, described I core is relative to institute State the described pedestal on E core, be arranged in substantially in parallel with described pedestal and be positioned at and described base along described 3rd direction of principal axis The end of described skeleton of seat opposition side, be inserted into described through hole described middle foot prominent front end with described I core The form configuration that pars intermedia is relative, is formed at prominent front end and described I core described of the batter at the both ends of described E core 2nd axial both ends docking.

Even if in the case of employing E core and I core like this, in the present invention, stress relaxation properties and thermal diffusivity Also it is excellent, and contributes to the reduction of manufacturing cost.I core can separate with the gap of regulation at described pars intermedia.

Preferably, coil device involved in the present invention has: the 1st skeleton, is wound with composition primary coil or secondary wire 1st winder of the 1st coiling of either one in the middle of circle is formed at periphery；And the 2nd skeleton, it is arranged on described 1st skeleton Periphery, and the 2nd winder being wound with the 2nd coiling constituting the opposing party in the middle of described primary coil or secondary coil is formed at Periphery, described 1st winder or the 2nd winder at least any one, by along described 1st coiling or the winding of the 2nd coiling Axle and the coiling that adjoins each other multiple dividing walls separated from one another are formed along described wireline reel, at predetermined intervals by described isolation The compartment width along described wireline reel in each compartment that wall separates is set to the width that only 1 described coiling can enter, The height of described dividing wall is set to the height that the described coiling of more than 1 can enter, and at each dividing wall, is formed with connection neighbour The each compartment connect at least one connectivity slot each other.

In such coil device, coiling is being wound more than the one layer situation in the winder being formed with dividing wall Under, after each compartment winds more than one layer, wind more than one layer at adjacent compartment, pass sequentially through connectivity slot and make coiling in phase Adjacent compartment moves and winds more than one layer.Therefore, little in the overlapping coiling of each compartment voltage difference each other, and in wireline reel side Upwards adjacent coiling is isolated wall insulation each other, and the voltage-resistent characteristic between coil improves, and high frequency characteristics improves.

It is additionally, since at each compartment there is the form winding coiling of the most single coiling along wireline reel direction, therefore Easily prevent the winding position generation deviation of the coiling of each layer, contribute to the stabilisation of Magnetic leakage characteristics.I.e. it is easy to tightly control Primary coil and the coupling coefficient K of secondary coil, it is possible to the coil device of the present invention is made well as leakage transformer With.

Further, since coil device can as the wireline reel of coil relative to installation base plate by the longitudinal type of arranged perpendicular Coil device uses, and therefore easily cools down the core of the hollow bulb being inserted into the 1st skeleton.

Preferably, the 1st coiling being arranged in inner circumferential side constitutes action of high voltage described compared with described primary coil Secondary coil, in described 1st winder, is formed with multiple dividing wall along described wireline reel.

In the case, by the secondary coil of action of high voltage is arranged in the primary coil of low voltage effect Side, thus easily insulate.It addition, in the case, in described 2nd winder, the 2nd coiling can be wound with common permutation.

Preferably, described 2nd skeleton is can be in the cut-off rule segmentation paralleled with described wireline reel.By such structure Become, easily the 2nd skeleton is arranged in the periphery of the 1st skeleton.

Axial 1st overall width of described winding of described 1st winder can be with the described winding of described 2nd winder Axial 2nd overall width is different.Even if making the 1st overall width and the 2nd overall width different, it is also possible to adjust Magnetic leakage characteristics.The 1st Overall width is made identical by winder and the 2nd winder, even if making Winding Layer different, it is also possible to adjust Magnetic leakage characteristics.

Preferably, the described connectivity slot of described dividing wall it is respectively formed to connect along described wireline reel direction linearity Form configuration.Furthermore it is preferred that at described dividing wall, be respectively formed with the described connectivity slot of more than 2.Can be by arbitrary Individual connectivity slot uses as the movement path between the compartment of coiling, and another is as by the winding initiating terminal of coiling Or winding terminal returns to be formed at the return path of the terminal of one end of wireline reel and uses.If return path is straight line Shape, then can be connected to terminal by the end of coiling with beeline.

At least one in the middle of described dividing wall can be contacted with the inner peripheral surface of described 2nd skeleton, and by described 1st winding Portion and described 2nd winder substantially position with wick-like.In the case, need not be provided for the 1st skeleton and the 2nd separately The component of framework location.

Further, between the winder of coiling and the winder of coiling being wound on, insulating tape can be wound with.

In order to achieve the above object, the coil device involved by the 2nd viewpoint of the present invention, it is characterised in that there is E type Core, skeleton and be arranged on the coil of periphery of described skeleton, described E core has: pedestal, with orthogonal 1st axle, The plane comprising described 1st axle and the 2nd axle in the middle of 2 axles and the 3rd axle is almost parallel；A pair batter, along described 2nd direction of principal axis from The two ends of described pedestal are prominent to described 3rd direction of principal axis respectively；And middle foot, between the pair of batter from described pedestal to Described 3rd direction of principal axis highlights, and described middle foot and pedestal are formed at each of a pair segmentation core of separation with batter described in a pair Form is separated at the divisional plane of described segmentation core, heat radiation thin slice between each other at least some of of described divisional plane, The described middle foot separated via described heat radiation thin slice is inserted into the through hole of described skeleton.

Experiment according to the present inventor etc., it is thus identified that by making structure as described above, thus with use existing E type The situation of core compares, it is possible to by the stress of locality produced by the cross part of middle foot and pedestal be reduced to about 1/2 with Lower left and right.Therefore, in coil device involved in the present invention, even if producing thermal stress on core, it is also possible to effectively suppress Crackles etc. produce.

It addition, middle foot and pedestal on E core are separated at the divisional plane of segmentation core, heat radiation thin slice is between the phase of divisional plane Between Hu, thus thermal diffusivity increases.Additionally, in the present invention, combination each has a pair segmentation core of simple shape Constituting E core, the manufacture of core also becomes easy, additionally it is possible to seek the reduction of manufacturing cost.And, involved in the present invention divides The E core cutting type has the magnetic line of force in the same manner as E core on the whole, thus the magnetic characteristic of core is equal with general E core.

Further, in the present invention, heat radiation thin slice refers to comprise the meaning of heat sink and uses, and its thickness is the most especially Restriction, preferably 0.05～5mm, more preferably 0.1～3mm.

Preferably, described coil device along described 3rd axial at least section below is contained in shell, and connect Touch in heat transmission resin.By being contacted with heat transmission resin, thus improve thermal diffusivity further.

Preferably, described heat radiation thin slice between be located at least in described middle foot prominent front end divisional plane each other, Described heat radiation flap contact is in described heat transmission resin.Prominent fore-end at middle foot especially easily gathers heat, thereby through Heat radiation thin slice is between this part, thus easily via heat radiation thin slice and heat transmission resin, internal heat is released to outside.

Preferably, described heat radiation thin slice has and covers the above at least one of upper of Z-direction of described pedestal and dissipate Hot portion.The bottom of coil device easily cools down with the cooling body such as coldplate or cooling tube, but the top of coil device holds Easily gather heat.Therefore, by heat radiation thin slice, there is upper radiating part, thus easily make in heat produced by the top of coil device logical Cross heat radiation thin slice and run away to the lower section of coil device.Certainly, upper radiating part self also dispels the heat.

The coil device of the present invention can have E core described in a pair, and each middle foot of the segmentation of E core described in a pair is from institute State the 3rd axial side opposite each other and be inserted into the through hole of described skeleton, on the described 3rd axial way of described through hole In, the prominent front end of the described middle foot of segmentation is mutually relative, in the outside of described skeleton, and the side of the separation of E core described in a pair Foot can be mutually butted each other.

Even if in the case of employing a pair E core like this, in the present invention, stress relaxation properties and thermal diffusivity aspect Also it is excellent, and contributes to the reduction of manufacturing cost.

The coil device of the present invention can have described E core and I core, and described I core is relative to described E core On described pedestal, be arranged in substantially in parallel with described pedestal and be positioned at contrary with described pedestal along described 3rd direction of principal axis The end of the described skeleton of side, is inserted into the prominent front end of described middle foot of described through hole with the pars intermedia with described I core Relative form configuration, is formed at the prominent front end of the batter at the both ends of described E core and described 2nd axle of described I core The both ends docking in direction.

Even if in the case of employing E core and I core like this, in the present invention, stress relaxation properties and thermal diffusivity Also it is excellent, and contributes to the reduction of manufacturing cost.I core can separate with the gap of regulation at described pars intermedia, makes The heat radiation mediate gap of thin slice.

Preferably, coil device involved in the present invention has: the 1st skeleton, is wound with composition primary coil or secondary wire 1st winder of the 1st coiling of either one in the middle of circle is formed at periphery；And the 2nd skeleton, it is arranged on described 1st skeleton Periphery is also wound with the 2nd winder of the 2nd coiling constituting the opposing party in the middle of described primary coil or secondary coil and is formed at Periphery；In either one of described 1st winder or the 2nd winder, by along described 1st coiling or the winding of the 2nd coiling Axle and the coiling that adjoins each other multiple dividing walls separated from one another are formed along described wireline reel, at predetermined intervals by described isolation The compartment width along described wireline reel of each compartment that wall separates is configured to the width that only 1 described coiling can enter, The height of described dividing wall is configured to the height that the described coiling of more than 1 can enter, and at each dividing wall, is formed with connection Adjacent each compartment at least one connectivity slot each other.

And, it is the form winding coiling there is the most single coiling along wireline reel direction at each compartment, thus holds Easily prevent the winding position generation deviation of the coiling of each layer, contribute to the stabilisation of Magnetic leakage characteristics.I.e. it is easy at the beginning of tight control Level coil and the coupling coefficient K of secondary coil, it is possible to the coil device of the present invention is used well as leakage transformer.

Further, since coil device can as the wireline reel of coil relative to installation base plate by the longitudinal type of arranged perpendicular Coil device uses, and therefore easily cooling is inserted into the core of the 1st skeleton hollow bulb.

Preferably, the 1st coiling being arranged in inner circumferential side constitutes action of high voltage described compared with described primary coil Secondary coil, described 1st winder, it is formed with multiple dividing wall along described wireline reel.

Preferably, described 2nd skeleton can be split at the cut-off rule being parallel to described wireline reel.By so constituting, hold Easily the 2nd skeleton is arranged in the periphery of the 1st skeleton.

Preferably, the described connectivity slot of described dividing wall it is respectively formed to connect along described wireline reel direction linearity Form configuration.Furthermore it is preferred that at described dividing wall, form the described connectivity slot of more than 2 respectively.Any one is connected Groove uses as the movement path between the compartment of coiling, another can as by the winding initiating terminal of coiling or Winding terminal returns to be formed at the return path returning to terminal of one end of wireline reel and uses.If return path is straight Wire, then can be connected to terminal by the end of coiling with the shortest distance.

At least one in the middle of described dividing wall can be contacted with the inner peripheral surface of described 2nd skeleton, by described 1st winder Substantially position with wick-like with described 2nd winder.In the case, need not be provided for the 1st skeleton and the 2nd bone separately The component of frame location.

Accompanying drawing explanation

Figure 1A is the axonometric chart of the coil device involved by an embodiment of the invention.

Figure 1B is the axonometric chart of the coil device removing the shell shown in Figure 1A.

Fig. 2 is the exploded perspective view of the coil device shown in Fig. 1.

Fig. 3 A is to want portion's sectional view along the IIIA-IIIA line shown in Figure 1A.

Fig. 3 B is to want portion's sectional view along the IIIB-IIIB line shown in Figure 1A.

Fig. 4 is the axonometric chart of the only core shown in Fig. 1.

Fig. 5 is the skeleton diagram representing the primary coil in the coil device shown in Fig. 1 with the relation of secondary coil.

Fig. 6 is the skeleton diagram of the size relationship representing the dividing wall shown in Fig. 5.

Fig. 7 represents the primary coil in the coil device involved by another embodiment of the invention and secondary coil The skeleton diagram of relation.

Fig. 8 is the overall perspective view of the coil device involved by the embodiment shown in Fig. 7.

Fig. 9 A is the primary coil in the coil device involved by the further embodiment representing the present invention and secondary wire The skeleton diagram of the relation of circle.

Fig. 9 B is the primary coil in the coil device involved by the further embodiment representing the present invention and secondary wire The skeleton diagram of the relation of circle.

Fig. 9 C is the primary coil in the coil device involved by the further embodiment representing the present invention and secondary wire The skeleton diagram of the relation of circle.

Figure 10 be the coil device involved by another embodiment of the invention want portion's sectional view.

Figure 11 is the axonometric chart of the coil device involved by the further embodiment of the present invention.

Figure 12 is the summary sectional view of the XII-XII line along Figure 11.

Figure 13 A is the axonometric chart of the coil device involved by an embodiment of the invention.

Figure 13 B is the axonometric chart of the coil device eliminating the shell shown in Figure 13 A

Figure 14 is the exploded perspective view of the coil device shown in Figure 13.

Figure 15 A is to want portion's sectional view along the XVA-XVA line shown in Figure 13 A.

Figure 15 B is to want portion's sectional view along the XVB-XVB line shown in Figure 13 A.

Figure 16 is the axonometric chart of the only core shown in Figure 13.

Figure 17 A is the cross section of the heat radiation thin slice that the coil device involved by the further embodiment of the present invention is used Figure.

Figure 17 B is the cross section of the heat radiation thin slice that the coil device involved by the further embodiment of the present invention is used Figure.

Detailed description of the invention

Hereinafter, based on embodiment shown in the drawings, the present invention is described.

1st embodiment

As shown in Figure 1 to 4, the coil device 10 involved by an embodiment of the invention have a pair E core 12, 1st skeleton the 40, the 2nd skeleton 50 and shell 90.

A pair E core 12 is assembled and forms the magnetic circuit that makes the magnetic flux produced by coil described later pass through.These cores 12 have There is the shape of symmetry, and mutual to clamp the form of the 2nd skeleton the 50 and the 1st skeleton 40 from above-below direction (Z-direction in Fig. 1) Link.

As shown in Figure 3A, each core 12,12 is longitudinal section (comprising the cross section of Y-axis and Z axis) for substantially E word shape respectively Core.Each core 12,12 is made up of ferrite core, have extend in the Y-axis direction flat pedestal 13,13, from each pedestal A pair batter 16,16 that the two ends of the Y direction of 13,13 are prominent to Z-direction and from the Y direction of each pedestal 13,13 The middle foot 14,14 that centre position is prominent to Z-direction.

In the present embodiment, in each core 12, middle foot 14 and pedestal 13 are to be arranged in a pair batter at the two ends of Y direction Each the form of 16 a pair segmentation the core 12a, 12a being formed at separation is at segmentation core 12a, and the divisional plane of 12a is separated.Dividing Face 12b, 12b are formed with the gap 15 of regulation each other, and the middle foot 14 of separation is inserted into the 1st through hole 44a of skeleton 40.

The width t(of the X-direction in gap 15 is with reference to Fig. 4) it is preferably 0.05～5mm, more preferably 0.1～3mm.As Really width t is too small, then the effect of the present invention is little；If width t is excessive, then have the tendency that size unnecessarily becomes big.Further, Even if forming gap 15, the magnetic characteristic as E core is not changed in the most substantially.This is because, the change of the stream of the magnetic line of force on the whole Change few.

It addition, the gap 15 of regulation is it is not absolutely required to each other of divisional plane 12b, 12b of segmentation core 12a, 12a Be formed at whole, making divisional plane 12b, in the case of 12b whole area each other is 100%, it is stipulated that 15, gap Preferably to be formed in the ratio of 80～100% in 50～the ratio of 100%.It addition, regulation gap 15 on whole not Necessity is uniform, can be in the scope of 0～5mm, and the scope of preferably 0.1～5mm has deviation.

Further, in the accompanying drawings, Z axis is the short transverse of coil device 10, and the height of the Z-direction of coil device 10 is more Little, the slimming of coil device is the most likely.It addition, Y-axis is mutually perpendicular to X-axis, and it is perpendicular to Z axis, this embodiment party In formula, X-axis is consistent and almost parallel with divisional plane 12b, 12b with the long side direction of skeleton 40,50, and Y-axis is relative to divisional plane 12b, 12b are substantially vertical.

But, in the present invention, divisional plane 12b, 12b it is not absolutely required to be plane, it is also possible to be curved surface.It addition, point Face 12b, 12b it is not absolutely required to parallel with X-axis, it is also possible to tilt with predetermined angular, or, it is also possible to become along X-axis Zigzag manner or one-tenth waveform shape.Even if in either case, divisional plane 12b, the gap width on segmentation direction between 12b T also has aforesaid relation.

As in figure 2 it is shown, the 1st skeleton 40 has substantially rectangular flat 1st skeleton substrate 42.At the 1st skeleton substrate 42 Substantially central portion, as shown in Figure 3 A and Figure 3 B, the 1st hollow cylinder 44 be stretched over the top of Z-direction form one become Shape.

As in figure 2 it is shown, blade of a sword portion 48 is with in Y-axis-X-axis plane on the Z-direction top of the 1st hollow cylinder 44, the 1st skeleton Integrally formed to radially projecting form from the 1st hollow cylinder 44.On the 1st skeleton, 4 corners in blade of a sword portion 48, are formed with Terminal block portion 49, and a pair the 1st terminals 70 and 72 are the most detachably installed.Certainly, these terminals 70 and 72 also may be used With integrally formed at skeleton 40.

These terminals 70 and 72 are such as made up of metal terminal, as described later, become the inner side of secondary coil The leading part 22a(of the 1st coiling 22 of coil 20 is with reference to Fig. 1 and Fig. 3 B) it is connected to the 1st terminal 70 via weld part 24, constitute Become the leading part 32a(of the 2nd coiling 32 of the outer coil 30 of primary coil with reference to Fig. 1) it is connected to via weld part 34 2 terminals 72.

As shown in Fig. 2, Fig. 3 and Fig. 5, in the 1st hollow between blade of a sword portion the 48 and the 1st skeleton substrate 42 on the 1st skeleton The periphery in cylinder portion 44, is formed with the 1st winder 45.In the 1st winder 45, by mutual for the wireline reel (Z axis) along the 1st coiling 22 Multiple dividing walls 46 that adjacent coiling is separated from one another parallel ground with blade of a sword portion 48 on the 1st skeleton at predetermined intervals along wireline reel It is integrally formed with the 1st hollow cylinder 44.Described below about the details of dividing wall 46 and the method for winding of the 1st coiling.

Blade of a sword portion 48 on 1st skeleton substrate the 42, the 1st hollow cylinder the 44, the 1st skeleton of the 1st skeleton 40, terminal block portion 49 and Dividing wall 46 is preferably come integrally formed by ejection formation etc..

In the inside of the 1st hollow cylinder 44 of the 1st skeleton substrate 42, it is formed with the 1st the most through through hole 44a.The middle foot 14 of the segmentation of core 12 enters into the 1st through hole 44a, in the Z-direction of through hole 44a up and down from Z-direction Substantially central portion in the front end 18 of foot 14 dock.

As in figure 2 it is shown, the 2nd skeleton 50 is combined at the cut-off rule 51 being parallel to wireline reel (Z axis), 2 can be divided into Individual, the 2nd winder 55 is formed at periphery.Further, in fig. 2, the diagram of coil 20 and 30 is eliminated.2nd skeleton 50 the 1st around After line 22 is wound in the 1st winder of the 1st skeleton 40 and is formed with inner coil 20, it is arranged on the periphery of the 1st skeleton 40, It is combined at cut-off rule 51.

2nd skeleton 50 has the 2nd hollow cylinder 54 from outer side covers inner coil 20, blade of a sword portion 52 and the 2nd under the 2nd skeleton On skeleton, blade of a sword portion 58 is formed at the peripheral part of the 2nd hollow cylinder 54 the most along the circumferential direction.The lower blade of a sword The plane parallel ground of portion 52 and upper blade of a sword portion 58 and X-Y axle is arranged, and extends with paralleling with the face of setting.

The 2nd winder 55 is become between blade of a sword portion 52 and upper blade of a sword portion 58, as it is shown in figure 5, become primary coil under these The 2nd coiling 32(32 of outer coil 30₁～32_n) it is wound on the 2nd winder 55 by permutation.So-called permutation winding refers to treat The method for winding of the second layer, the coiling 32 that ground floor winding starts is wound again after ground floor winding₁Terminate with second layer winding Coiling 32_nOverlapping.

In the present embodiment, by making to be formed at upper blade of a sword portion 52 He of the periphery of the 2nd hollow cylinder 54 of the 2nd skeleton 50 The forming position in lower blade of a sword portion 58 and form interval and change, thus as it is shown in figure 5, with the wireline reel direction of the 1st winder 45 The 1st overall width L1 compare, more can shorten the axial 2nd overall width L2 of winding of the 2nd winder 55.

As shown in fig. 2 and fig. 3 a, in the periphery of the 2nd winder 55 of the 2nd skeleton 50 being provided with outer coil 30, from Y A pair insulating lid component 60 of installation is played in axial both sides.Insulating lid component 60 is e.g. made up of synthetic resin, its periphery Face becomes the guide surface of the batter 16 of guiding core 12, and outer coil 30 is positioned at inner circumferential surface.

As in figure 2 it is shown, 2 positions of the circumferential direction in the upper blade of a sword portion 58 of the 2nd skeleton 50, corresponding to the 2nd terminal 72 Position, is formed with lead-in wire and inserts general indentation 58a.As shown in Figure 1B, the winding initiating terminal of the 2nd coiling 32 and winding terminal i.e. go between Portion 32a passes through breach 58a, and is connected to the 2nd terminal 72 at each weld part 34.

As in figure 2 it is shown, the 2nd skeleton 50 of two Splittables being made up of blade of a sword portion 52,58 and the 2 hollow cylinder 54 be respectively by Ejection formations etc. come integrally formed.It addition, lid component 60 can also be formed by ejection formation etc..

As shown in Figure 5 and Figure 6, in the present embodiment, dividing wall 46 in each compartment 47 separated along wireline reel The wide w1 of compartment of (Z axis) is configured to only 1 coiling 22(22₁～22_n) width that can enter.That is, compartment width w1 relative to around The line footpath d1 of line 22 is preferably the relation of w1 ＜ (2 × d1).If compartment width w1 is wide relative to line footpath d1, then have be difficult to right Each compartment 47 carries out the worry of only 1 on wireline reel direction.

The height h1 of each dividing wall 46, is wound in the predetermined total number of each compartment 47 in season when being m, is preferably isolated wall 46 Highly h1 is more than m × d1.In this case, as shown in Figure 3 A and Figure 3 B, make the top contact of dividing wall 46 in the 2nd skeleton 50 Inner peripheral surface and the 1st winder 45 substantially can be positioned with wick-like with the 2nd winder 55, arrange separately hence without necessity For the component that the 1st skeleton 40 is positioned with the 2nd skeleton 50.

Also have, it is not necessary that make the top contact of all of dividing wall 46 in the inner peripheral surface of the 2nd skeleton 50, it is also possible to will appoint Anticipate one preferably on wireline reel direction the length of the dividing wall of separate more than 2 be set to the dividing wall more than other, The top contact making only these dividing walls implements location in the inner peripheral surface of the 2nd skeleton 50.Or, the 1st skeleton 40 and the 2nd The location of skeleton 50 can also be implemented with the component beyond dividing wall 46.

In this case, as this is shown in phantom in fig. 6, the height h1 of dividing wall 46 might be less that m × d1.But, Length Δ h(=m × the d1-h1 of extension) form that preferably do not moves to adjacent compartment 47 with coiling 22 is less than d1/2.Separately Outward, the projecting height in the 1st skeleton substrate 42 and blade of a sword portion 48 is preferably greater than the height of dividing wall 46.

1st coiling 22 can be made up of single line, or can also be made up of twisted wire, preferably by insulation-coated wire structure Become.There is no particular limitation for the outside diameter d 1 of coiling 22, but in the case of stream super-high-current, the most such as Φ 1.0～Φ 3.0mm.2nd coiling 32 can be identical with the 1st coiling 22, it is also possible to different.

In the present embodiment, the 1st coiling 22 is applied in high voltage to constitute the secondary coil of transformator, thus with The 2nd coiling 32 line footpath that compares wants thick, but there is no particular limitation in line footpath, can be made in line footpath identical, on the contrary can not also With.It addition, about the material of the 1st coiling the 22 and the 2nd coiling 32, can be the same or different.

As it is shown in figure 5, in the present embodiment, in the 1st skeleton 40, the 1st coiling 22(22₁～22_n) such as from being positioned at Z The compartment 47 of axial foot starts to wind 2 circles (22₁With 22₂), then, the coiling 22 of the 3rd circle₃It is wound in and is positioned at it On compartment 47.Hereinafter, similarly carrying out, the 1st coiling 22 winds end 22_nThe coiling 22 started from winding can be positioned at₁Farthest The compartment 47 of the topmost of Z-direction.

In contrast, as described above, in the 2nd skeleton 50, become primary coil outer coil 30 the 2nd around Line 32(32₁～32_n) it is wound in its 2nd winder 55 by permutation.So-called permutation winding refers to treat that ground floor is rolled up after being wound again Around the method for winding of the second layer, the coiling 32 that ground floor winding starts₁The coiling 32 terminated with second layer winding_nOverlapping.

As depicted in figs. 1 and 2, in the 1st skeleton 40, the two of the X-direction of each dividing wall of continuous print 46 in the circumferential direction Side, is formed with a pair connectivity slot 46a of rectilinear in the Z-axis direction.In the middle of a pair connectivity slot 46a one, such as Fig. 3 B Shown in, use to make coiling 22 move between adjacent compartment 47.It addition, another in the middle of a pair connectivity slot 46a In order to start winding or wind the end end i.e. leading part 22a of coiling 22 to make to the guiding of weld part 24 direction of terminal 70 With.

Coil device 10 involved by present embodiment is by assembling each component shown in Fig. 2 and coiling being wound in the 1 skeleton the 40 and the 2nd skeleton 50 manufactures, as shown in Figure 1A, Fig. 3 A and Fig. 3 B, to comprise the upper of the Z-direction of terminal 70 and 72 The form that side's part is exposed is accommodated in the inside of shell 90.In the inside of shell 90, it is filled with heat transmission resin 92.As dissipating Heat resin 92, is not particularly limited, and the most such as coefficient of heat conduction is 0.5～5 preferably 1～the thermal diffusivity of 3W/m k Excellent resin.

As the resin excellent at thermal diffusivity, such as, there are silicone resin, urethanes resin, an epoxylite etc., wherein, Preferably silicone resin, urethane resin.It addition, in order to improve thermal diffusivity, it is also possible to high the filling out of filling heat conductivity in resin Charge.

It addition, the Xiao A hardness of the heat transmission resin 92 of present embodiment is less than 100, preferably less than 60.This be because of For, even if core 12 deforms due to heat, its deformation also can be absorbed, from without making core 12 produce excessive stress.As Such resin, can illustrate sealing resin.

Lower section at shell 90, it is also possible to via metallic plate or directly install cooling tube, cold sink etc. cooling Device.

Hereinafter, one example of manufacture method of open-wire line coil apparatus 10 for using Fig. 2 to wait.Making at coil device 10 In, first, prepare to be mounted with the 1st skeleton 40 of the 1st terminal the 70 and the 2nd terminal 72.The material of the 1st skeleton 40 the most particularly limits Fixed, the 1st skeleton 40 can be made up of insulant such as resins.

Then, the 1st coiling 22 is wound in the periphery of the 1st hollow cylinder 44 of the 1st skeleton 40, forms inner coil 20. The 1st coiling 22 used as the formation of inner coil 20.There is no particular limitation, can be suitably used litz wire.Separately Outward, the terminal part i.e. leading part 22a of the 1st coiling 22 when forming inner coil 20 be banded in the 1st terminal 70 a part and Weld and connect.

Then, the 2nd skeleton 50 is arranged on it is formed with the 1st skeleton 40 of inner coil 20.Outer coil 30 will be constituted 2nd coiling 32 is wound in the periphery of the 2nd hollow cylinder 54 of the 2nd skeleton 50.

Thereafter, in the both sides of the Y direction that lid 60 is arranged on the 2nd skeleton 50, thereafter, from the above-below direction of Z-direction The core 12 being made up of segmentation core 12a, 12a respectively is installed.That is, make the segmentation of core 12 middle foot 14,14 front end 18 each other, batter The front end 19 of 16,16 abuts each other.Further, in the front end 18 of middle foot 14,14 each other, can have gap.

As the material of each core 12, the soft magnetic material such as metal, ferrite can be enumerated, but there is no particular limitation. Core 12 is fixed on the 2nd skeleton the 50 and the 1st skeleton 40 by using bonding material bonding or to wind periphery by ribbon-shaped members 80.But It is that the core 12a, 12a of segmentation is maintained at fixed range with gap width t each other of the divisional plane 12b, 12b shown in Fig. 4 Form be fixed in the 2nd skeleton the 50 and the 1st skeleton 40.

In the present embodiment, coil device 10 can be implemented after a series of assembling procedure dipping lacquer process.Logical Cross above such operation, it is possible to manufacture the coil device 10 involved by present embodiment.

Thereafter, coil device 10, to comprise the top of the Z-direction of terminal 70 and 72 as shown in Figure 1A, Fig. 3 A and Fig. 3 B The form that part is exposed, is housed inside the inside of the shell 90 being filled with heat transmission resin 92.Being filled in coil of resin 92 Device 10 can before or after being contained in shell 90 inside.In a word, resin 92 is all filled in divisional plane 12b each other Gap 15 at least some of, preferably with resin 92 filling gap 15 until foot 14 in Bi, the front end 18 of 14 each other with batter 16, The front end 19 of 16 is the most more toward the upper position of Z-direction.

Particularly on position each other, the front end 18 of middle foot 14,14, easily gather heat, by having gap in this part, and There is heat transmission resin in this part, thus easily make the heat within middle foot 14 conduct heat to the lower section of Z-direction, and pass through shell 90 heat radiations.Shell 90 can be made up of the metal etc. that thermal diffusivity is excellent, or, it is also possible to it is made up of resin and uses and be arranged on Z axis The cooling body of the lower section in direction cools down.

In the coil device 10 of present embodiment, middle foot 14 and pedestal 13 are formed at a pair of separation with a pair batter 16 Each the form of segmentation core 12a, 12a is separated at the divisional plane 12b, 12b of segmentation core 12a, 12a.And, at divisional plane 12a, 12a each other, are formed with the gap 15 of regulation, and the middle foot 14 of separation is inserted into the through hole 44a of the 1st skeleton 40.

In the present embodiment, by making structure as described above, compared with the situation using existing E core, The stress of locality produced by the cross part at middle foot 14 and pedestal 13 can be reduced to about about less than 1/2.Therefore, exist In coil device 10 involved by present embodiment, even if at core 12,12 produce thermal stress also is able to effectively suppress crackle etc. Produce.

Especially, as shown in Figure 4, in the case of a pair E core 12 of combination, research uses length Ly of its Y direction For more than 50mm, a length of Lx of X-direction is more than 20mm, and length Lz of Z-direction is the big core of more than 10mm,.With Past, in such big core, particularly thermal stress becomes big and cracks, thus uses difficulty, but in present embodiment In, by arranging gap 15, it is possible to the stress of locality produced by the cross part at middle foot 14 and pedestal 13 is reduced to existing Have about about less than 1/2, therefore use and become possibility.

It addition, the middle foot 14 of E core and pedestal 13 are separated at the divisional plane 12b, 12b of segmentation core 12a, 12a, in segmentation The gap 15 being formed with regulation each other of face 12b, 12b, thus thermal diffusivity also increases.Additionally, in present embodiment In, combination each has a pair of simple shape segmentation core 12a, 12a and constitutes E core 12,12, thus core 12, the manufacture of 12 Also it is easy to become, moreover it is possible to seek the reduction of manufacturing cost.The cross section of each segmentation core 12a has U-shaped shape, and it shapes easily.And And, the E core 12,12 of the Splittable involved by present embodiment has the magnetic line of force as E core on the whole, thus core The magnetic characteristic of 12,12 is equal with general E core.

Further, in the present embodiment, at least section below along Z-direction of coil device 10 is contained in shell 90 In, and it is contacted with heat transmission resin 92.By being contacted with heat transmission resin 92, thus improve thermal diffusivity further.

And, in the present embodiment, in being positioned at the divisional plane 12b, 12b of the prominent front end 18 of foot 14 mutual it Between, it is filled with heat transmission resin 92.Part in the prominent front end 18 of middle foot 14, owing to easily gathering heat, therefore passes through especially Allowing heat transmission resin 92 between this part, thus this part can be dispelled the heat effectively.

The coil device 10 of present embodiment has a pair E core 12,12, each middle foot of the segmentation of a pair E core 12,12 14 are inserted into the through hole 44a of the 1st skeleton 40 from the side opposite each other of Z-direction.And, in the Z-direction of through hole 44a In Tu, the prominent front end 18 of the middle foot 14 of segmentation is relative to each other, in the outside of skeleton 50, and the batter of the separation of a pair E core 12 16 dock each other.So, employing a pair E core 12, in the case of 12, in the present embodiment, stress relaxes spy Property and thermal diffusivity excellent, and also contribute to the reduction of manufacturing cost.

It addition, the Z-direction that coil device 10 is middle foot 14 (direction that magnetic flux flows through) of present embodiment is relative to setting Put the longitudinal type that face (below shell 90) is vertical.The coil device 10 of longitudinal type is configured with on the Z axis above-below direction of coil 20,30 The pedestal 13,13 of core 12, these pedestals 13,13 play the effect of suppression leakage magnetic flux vertically.Therefore, coil device 10 compared with the horizontal type that the above-below direction of coil the most not quilt core covers, it is possible to that effectively suppresses to coil device 10 is upper and lower The leakage magnetic flux in direction.

Further, ribbon-shaped members 80 uses mainly for fixed core 12.Ribbon-shaped members 80 such as by polyester, polyimides, The materials such as paper are constituted.In the case of making ribbon-shaped members 80 also have thermal diffusivity, ribbon-shaped members 80 is preferably by electrical conductivity ratio The material of core 12 excellence is constituted, specifically, such as excellent by the electrical conductivity of the metal such as aluminum, copper or their alloy etc. Material constituted.Certainly, as ribbon-shaped members 80, it is also possible to the ribbon-shaped members that combination is made up of above-mentioned various materials is come Use.

It addition, in the present embodiment, each pedestal 13,13 and batter 16,16 by core 12 cover from outside Cover the combination of the 1st skeleton the 40 and the 2nd skeleton 50.By making such structure, it is possible to seek preventing of leakage magnetic flux.Pedestal 13,13 and the width along X-direction of batter 16,16, relative to the length along X-direction of the middle foot 14,14 of core 12, Can be the same or different, but roughly the same by making, it is easily adjusted Magnetic leakage characteristics.

In the coil device 10 involved by present embodiment, as it is shown in figure 5, the 1st coiling 22 is being wound more than one layer In the case of being formed with the 1st winder 45 of dividing wall 46, after each compartment 47 winds more than one layer, at adjacent compartment 47 windings more than one layer.Then, as in figure 2 it is shown, pass sequentially through connectivity slot 46a and make coiling 22 move to adjacent compartments volume 47 Around more than one layer.Therefore, as it is shown in figure 5, the winding sequence in the 1st coiling 22 of each compartment 47 overlap is close, their voltage Difference is little, and coiling adjacent on wireline reel (Z axis) direction is mutually isolated wall 46 and insulate, thus voltage-resistent characteristic improves also And high frequency characteristics improves.

It is additionally, since to there is the most single coiling 22 along wireline reel direction at each compartment 47₁～22_nForm winding Coiling 22, the most easily prevents the appearance deviation of the winding number of each layer of coiling 22, contributes to the stabilisation of Magnetic leakage characteristics.That is, The tightest outer coil 30 controlling composition primary coil and the coupling coefficient K of the inner coil 20 constituting secondary coil, i.e. Make also to be able to use well as leakage transformer using the coil device 10 of present embodiment.

It addition, the coil device 10 of present embodiment can be as the wireline reel of coil relative to installation base plate face (shell Below 90) coil device of the longitudinal type of arranged perpendicular uses, thus easily cooling is inserted into the hollow bulb of the 1st skeleton 40 Core 12.

And, in the present embodiment, the 1st coiling 22 being arranged in inner circumferential side constitutes the primary coil phase with transformator Relatively there is the secondary coil (inner coil 20) of action of high voltage.Therefore, by by the secondary coil (inside cord of action of high voltage Circle 20) it is arranged in the inner side of the primary coil (outer coil 30) of low voltage effect, thus easily insulate.It addition, at volume 2 Make common permutation winding around portion the 55, the 2nd coiling 32, but the 2nd coiling 32 is owing to being the primary becoming and being applied with low voltage The outer coil 30 of coil, hence without problem.

Additionally, in the present embodiment, the 2nd skeleton 50 as shown in Figure 2 can be at the cut-off rule 51 point parallel with wireline reel Cut, it is thus possible to easily the 2nd skeleton 50 is arranged in the periphery of the 1st skeleton 40.

It addition, in the present embodiment, as it is shown in figure 5, by allowing axial 1st beam overall of winding of the 1st winder 45 The axial 2nd overall width L2 of winding of degree L1 and the 2nd winder 55 is different, it is possible to easily and accurately adjust Magnetic leakage characteristics.

Additionally, in the present invention, being respectively formed at that the connectivity slot 46a of dividing wall 46 not necessarily has along wireline reel direction must On straight line to be arranged in, but preferably as in figure 2 it is shown, configure with the form of linearity connection.Especially, if becoming leading part The connectivity slot 46a of the return path of 22a is linearity in the Z-axis direction, then can be with beeline by the leading part of coiling 22 The end of 22a is connected to terminal 70.It addition, by the company making coiling 22 move to adjacent compartment 47 will be used for from each compartment 47 Groove 46a is formed at each dividing wall 46 with identical position in the circumferential direction, thus the spiral operation of coiling 22 becomes easy.

2nd embodiment

Coil device 10a Yu Fig. 1 involved by the 2nd embodiment shown in Fig. 7 and Fig. 8～the 1st embodiment party shown in Fig. 6 Coil device involved by formula compares, and the structure of the only the 2nd skeleton 50a is different, and other are all same, below, the most different Part illustrates.

In this coil device 10a, the axial way of winding of the 2nd skeleton is formed with the dividing wall 56 of more than 1, Along wireline reel direction, the 2nd winder 55 is divided into the compartment 57 of more than 2.2nd coiling 32₁～32_kWith 32_k+1～32_nWhole Row are wound in each compartment 57.At dividing wall 56, it is formed with the connectivity slot 56a of more than 1 along the circumferential direction.Connectivity slot 56a have with The function that connectivity slot 46a is same.

In the coil device 10a of present embodiment, it is possible to outer coil 30 segmentation constituting primary coil is carried out Configuration.Further, can be to be made up of the most different coilings being divided into each compartment 57 primary coil that is each and that configure Separate independent coil.

3rd embodiment

In the 1st embodiment, as it is shown in figure 5, the axial center of winding of the 2nd winder 55 is directed at volume 1 The axial center of winding around portion 45, but it is not only so, it is also possible to constitute as shown in Figure 9 A.In present embodiment In involved coil device 10b, it is possible to so that the wireline reel side of lower end position alignment the 1st winder 45 of the 2nd winder 55 To lower end position.

By doing like that above, it is possible to expect to improve the radiating effect from coil 20 and 30.Trace it to its cause is by inciting somebody to action Radiating part is arranged on the bottom of coil device 10b, is not only coil 20 and has carried from the heat-transfer character of coil 30 High.Further, in the present embodiment shown in Fig. 9 A, start to wind the 1st coiling 22(22 from the upper end of wireline reel₁～22_n), but In turn can also.Other structurally and functionally effect as the coil device involved by the 1st embodiment.

It addition, coil device 10c as shown in Figure 9 B is such, overall width is done with the 2nd winder 55 in the 1st winder 45 Become identical, even if making Winding Layer different, it is also possible to adjust Magnetic leakage characteristics.Coil device 10c Yu Fig. 1 shown in Fig. 9 B～Fig. 6 The shown coil device involved by the 1st embodiment compares, and simply the axial length of winding of the 2nd skeleton 50c is different And the 2nd the Winding Layer of coiling 32 different, other are same.

It addition, in the coil device 10d shown in Fig. 9 C, it is also possible to it is formed without dividing wall 46 at the 1st skeleton 40a but incites somebody to action 1st coiling 22(22₁～22_n) roll up as permutation, and will be formed in inner coil 20a of the 1st winder 45 as in transformator Primary coil.In the case, in the 2nd winder 55 of the 2nd skeleton 50d, formed same with the dividing wall 46 in the 1st embodiment The dividing wall 56d of sample, and use the method for winding as the 1st coiling 22 in the 1st embodiment to wind composition out conductor The 2nd coiling 32(32 of circle 30d₁～32_n).In the present embodiment, outer coil 30d constitutes the secondary coil of transformator.Other Structurally and functionally effect is in a same manner as in the first embodiment.

It addition, in the above-described embodiment, outer coil 30 and inner coil 20 position with there is no need same wick-like, for Adjustment Magnetic leakage characteristics can also stagger.

4th embodiment

As shown in Figure 10, the coil device 10e of present embodiment has E core 12A and I core 17.E core 12A is Longitudinal section (comprising the section of Y-axis and Z axis) is substantially E word shape core.Core 12A has extend in the Y-axis direction flat Pedestal 13a, a pair batter 16a, 16a prominent to Z-direction from the two ends of the Y direction of pedestal 13a and from pedestal 13a The centre position of the Y direction middle foot 14a prominent to Z-direction.

In the present embodiment, in core 12A, middle foot 14a and pedestal 13a is to be arranged in an offside at the two ends of Y direction Foot 16a, 16a are formed at each the form of a pair segmentation core 12a1,12a1 of separation, in segmentation core 12a1, the segmentation of 12a1 Face 12b, 12b are separated.At divisional plane 12b, 12b each other, being formed with the gap 15 of regulation, the middle foot 14 of separation inserts The 1st through hole 44a to skeleton 40.

The I core 17 that linearity extends in the Y-axis direction is by the divisional plane in the substantially central portion being formed at its Y direction 17b, 17b are by the segmentation core 17a of two segmentations, and 17a is constituted.Divisional plane 17b, 17b are formed at and divisional plane 12b, and 12b is in Y-axis Position roughly the same on direction, has gap width in a same manner as in the first embodiment.

I core 17, relative to the pedestal 13a of E core 12A, is arranged in along Z-direction substantially in parallel with pedestal 13a It is positioned at the end of the skeleton 40 of the side contrary with pedestal 13a.The middle foot 14a's being inserted in the through hole 44a of skeleton 40 is prominent Front end 18a extends to the lower surface same plane of the Z-direction with through hole 44a, therefore, with the pars intermedia towards I core 17 The form configuration of (vicinity of divisional plane 17b).It addition, be formed at the prominent front end 19a of the batter 16a at the two ends of E core 12A with The both ends docking of the Y direction of I core 17.

Even if in the case of employing E core 12A and I core 17 like this, in the present embodiment, stress relaxes spy Property and thermal diffusivity are also excellent, and also contribute to the reduction of manufacturing cost.I core 17, as shown in Figure 10, can be in Y-axis The pars intermedia in direction separates with the gap of regulation but it also may be the single I core not separating and stretching in the Y-axis direction.

Further, the lower section of the Z-direction during I core is preferably configured in coil device 10e.By configuring like this, E core The prominent front end 18a of the middle foot 14a in 12A is arranged in the lower side of the Z-direction of shell 90.Therefore, temperature easily rises It is partly arranged at the downside of shell 90, and gap 15 is filled with heat transmission resin effectively, also improves thermal diffusivity.This be because of For, in the lower section of shell 90, cooling body is installed.Structurally and functionally effect and the coil involved by the 1st embodiment fill for other Put same.

5th embodiment

As is illustrated by figs. 11 and 12, in the coil device 10f of present embodiment, at the skeleton being formed with through hole 44a The internal perisporium of the 1st hollow cylinder 44 of composition the 1st through hole 44a of 40, at the two ends of its Y direction, at the two ends of Z-direction 4 places of position are formed with location protuberance 41.Between positioning shown in the thickness by the Y direction of protuberance 41 and Fig. 4 Degree t is identical for gap length, and protuberance 41 is used for guaranteeing gap width t.

By with sandwich from Y direction protuberance 41 form will segmentation core 12a middle foot 14 from the insertion up and down of Z-direction To through hole 44a, thus the divisional plane 12b splitting core 12a mutually keeps with corresponding with the thickness of the Y direction of protuberance 41 The state that gap width t of regulation separates.Protuberance 41 can be in the 1st hollow cylinder 44 of composition the 1st through hole 44a of skeleton 40 Internal perisporium, be intermittently formed multiple in the Z-axis direction, or can also be continuously formed in the Z-axis direction.Other results and Coil device involved by action effect and the 1st embodiment is same.

Further, the present invention is also defined in above-mentioned embodiment, can carry out various changing within the scope of the invention Become.

Such as, in the above-described embodiment, the wireline reel along the 1st coiling the 22 or the 2nd coiling 32 is adjoined each other around Multiple dividing walls 46,56,56d that line is separated from one another, are formed at predetermined intervals along wireline reel, but in the present invention, isolation Wall not necessarily necessity.I.e., in the present invention, the method for winding of the 1st coiling the 22 and the 2nd coiling 32 the most particularly limits Fixed, both of which can be with the common method for winding that need not dividing wall.

It addition, in coil device involved in the present invention, be filled with the shell 90 of heat transmission resin 92 not necessarily Necessary.

6th embodiment

As shown in FIG. 13 to 16, the coil device 10g involved by an embodiment of the invention is the 1st embodiment Variation, in addition to shown below, in a same manner as in the first embodiment, eliminate the explanation of part of part repetition.Line Coil apparatus 10g has a pair E core the 12, the 1st skeleton the 40, the 2nd skeleton 50 and shell 90.

A pair E core 12 is assembled and forms the magnetic circuit that makes to be passed through by magnetic flux produced by coil described later.These cores 12 There is the shape of symmetry, and clamp the 2nd skeleton 50 and the 1st skeleton 40 and mutual from above-below direction (in fig. 13 for Z-direction) Link.

As shown in fig. 15, each core 12,12 is longitudinal section (comprising the section of Y-axis and Z axis) for substantially E word shape core respectively. Each core 12,12 is made up of ferrite core, have extend in the Y-axis direction flat pedestal 13,13, from each pedestal 13,13 The two ends of Y direction a pair batter 16,16 prominent to Z-direction and the centre of Y direction from each pedestal 13,13 The middle foot 14,14 that position is prominent to Z-direction.

In the present embodiment, in each core 12, middle foot 14 and pedestal 13 are to be arranged in a pair batter at the two ends of Y direction Each the form of 16 a pair segmentation the core 12a, 12a being formed at separation is at segmentation core 12a, and the divisional plane of 12a is separated.Heat radiation Thin slice 15 is touched and is held on divisional plane 12b, and each other, the middle foot 14 separated by heat radiation thin slice 15a is inserted into bone to 12b 1st through hole 44a of frame 40.

The width t(of the X-direction of heat radiation thin slice 15a is with reference to Figure 16) be preferably 0.05～5mm, more preferably 0.1～ 3mm.If width t is too small, then the effect of the present invention is little；If width t is excessive, then can be in size and unnecessarily become big inclining To.Further, though allow heat radiation thin slice 15a between, as the magnetic characteristic of E core also substantially without changing.This be because of Change for the stream of the magnetic line of force on the whole is little.

It addition, heat radiation thin slice 15a must might not the having each other of divisional plane 12b, 12b splitting core 12a, 12a Divisional plane 12b is being made between whole, in the case of the whole area each other of 12b is 100%, if heat radiation thin slice 15_aWith 30～100%, preferably 50～100% ratio between.It addition, heat radiation thin slice 15a is on whole preferably Uniform thickness, but in the scope of 0～5mm, in the range of preferably 0.1～5mm, have deviation also possible.

Further, in the accompanying drawings, Z axis is the short transverse of coil device 10g, and the height of the Z-direction of coil device 10g is more Little, the slimming of coil device is the most likely.It addition, Y with and X-axis be mutually perpendicular to, but also be perpendicular to Z axis, in this enforcement In mode, X-axis is consistent and almost parallel with divisional plane 12b, 12b with the long side direction of skeleton 40,50, and Y-axis is relative to segmentation Face 12b, 12b are substantially vertical.

But, in the present invention, divisional plane 12b, 12b might not be necessary it is plane, it is also possible to be curved surface.It addition, Divisional plane 12b, 12b might not be necessary to parallel with X-axis, it is also possible to tilt with predetermined angular, or, it is also possible to edge X-axis zig zag shape or waviness shape.In either case, heat radiation thin slice 15a all between divisional plane 12b, 12b it Between.

Heat radiation thin slice 15a is such as by PPS, PBT that the metallic plates such as the aluminum of thermal diffusivity excellence, copper or pyroconductivity are good Constituted Deng other thin plates such as resin plate or the ceramic wafer of conduction of heat excellence, silicon sheets.If the material of heat radiation thin slice 15a It is to there is the material of the heat conductivity higher than the heat conductivity of material constituting segmentation core 12a just there is no particular limitation.

In the example in the figures, as shown in figure 14, heat radiation thin slice 15_aRespectively possess one piece each E core 12 is each, with in Link in the Z-axis direction on the position that the prominent front end 18 of foot 14 is identical, but be not restricted to that example illustrated, it is also possible to be edge Through hole 44a continuous print one piece heat radiation thin slice.

As shown in figure 14, the 1st skeleton 40 has substantially rectangular flat 1st skeleton substrate 42.At the 1st skeleton substrate 42 Substantially central portion, as shown in fig. 15 a and fig. 15b, the 1st hollow cylinder 44 be stretched over the top of Z-direction form one Shape.

As shown in figure 14, on the Z-direction top of the 1st hollow cylinder 44, the 1st skeleton blade of a sword portion 48 with Y-axis-X-axis put down Face is integrally formed to radially projecting form from the 1st hollow cylinder 44.On the 1st skeleton, 4 corners in blade of a sword portion 48, integrally formed There is terminal block portion 49, and a pair the 1st terminals 70 and 72 are the most detachably installed.

These terminals 70 and 72 are such as made up of metal terminal, as described later, become the inside cord of secondary coil The leading part 22a(of the 1st coiling 22 of circle 20 is with reference to Figure 13 and Figure 15 B) it is connected to the 1st terminal 70 via weld part 24, constitute Become the leading part 32a(of the 2nd coiling 32 of the outer coil 30 of primary coil with reference to Figure 13) it is connected to via weld part 34 2nd terminal 72.

As shown in Figure 14 and Figure 15, in the 1st hollow between blade of a sword portion the 48 and the 1st skeleton substrate 42 on the 1st skeleton The periphery in portion 44, is formed with the 1st winder 45.In the 1st winder 45, by the mutually neighbour of the wireline reel (Z axis) along the 1st coiling 22 The multiple dividing walls 46 separated are implemented in the coiling connect each other, equal with blade of a sword portion 48 on the 1st skeleton at predetermined intervals along wireline reel Row ground forms with the 1st hollow cylinder 44.Chat later about the details of dividing wall 46 and the method for winding of the 1st coiling State.

In the inside of the 1st hollow cylinder 44 of the 1st skeleton substrate 42, it is formed with the 1st the most through through hole 44a.The middle foot 14 that separates via heat radiation thin slice 15a in core 12 enters into the 1st through hole 44a up and down from Z-direction, The substantially central portion of the Z-direction of through hole 44a, the front end 18 of middle foot 14 is docked.

As shown in figure 14, the 2nd skeleton 50 is combined at the cut-off rule 51 being parallel to wireline reel (Z axis), can be divided into 2 Individual, the 2nd winder 55 is formed at periphery.Further, in fig. 14, the diagram of coil 20 and 30 is eliminated.2nd skeleton 50 is the 1st After coiling 22 is wound in the 1st winder of the 1st skeleton 40 and is formed with inner coil 20, it is arranged on outside the 1st skeleton 40 Week, and be combined at cut-off rule 51.

2nd skeleton 50 has the 2nd hollow cylinder 54 from outer side covers inner coil 20, blade of a sword portion 52 and the 2nd under the 2nd skeleton On skeleton, blade of a sword portion 58 is formed at the peripheral part of the 2nd hollow cylinder 54 the most along the circumferential direction.Lower blade of a sword portion 52 and the plane parallel ground of upper blade of a sword portion 58 and X-Y axle arrange, and extend with paralleling with the face of setting.

The 2nd winder 55 is become between blade of a sword portion 52 and upper blade of a sword portion 58 under these, in the 2nd winder 55, as it is shown in figure 5, Permutation is wound with the 2nd coiling 32(32 of the outer coil 30 becoming primary coil₁～32_n).

In the present embodiment, by make to be formed at the 2nd hollow cylinder 54 periphery of the 2nd skeleton 50 upper blade of a sword portion 52 and under The forming position in blade of a sword portion 58 and form interval and change, thus as shown in Figure 5 with the winding of the 1st winder 45 axial the 1 overall width L1 compares, it is possible to shorten the axial 2nd overall width L2 of winding of the 2nd winder 55.

As shown in Figure 14 and Figure 15 A, in the periphery of the 2nd winder 55 of the 2nd skeleton 50 being provided with outer coil 30, from A pair insulating lid component 60 of installation is played in the both sides of Y direction.Insulating lid component 60 is such as made up of synthetic resin, and its outer peripheral face becomes For the guide surface of the batter 16 of guiding core 12, outer coil 30 is positioned at inner circumferential surface.

As shown in figure 14, on 2 positions of the circumferential direction in the upper blade of a sword portion 58 of the 2nd skeleton 50, relative with the 2nd terminal 72 The position answered, is formed with lead-in wire and inserts general indentation 58a.As shown in Figure 13 B, the winding initiating terminal of the 2nd coiling 32 and winding terminal I.e. leading part 32a by breach 58a and is connected to the 2nd terminal 72 at each weld part 34.

As shown in figure 14, by blade of a sword portion 52,58 and the 2 hollow cylinder 54 constitute two Splittables the 2nd skeleton 50 respectively by Ejection formations etc. come integrally formed.It addition, lid component 60 also is able to be formed by ejection formation etc..

As shown in Figure 5 and Figure 6, in the present embodiment, dividing wall 46 in each compartment 47 separated along wireline reel The wide w1 of compartment of (Z axis) is configured to only 1 coiling 22(22₁～22_n) width that can enter.That is, compartment width w1 relative to around The line footpath d1 of line 22 is preferably the relation of w1 ＜ (2 × d1).If compartment width w1 is wide relative to line footpath d1, have be difficult to right Each compartment 47 carries out the worry of the winding of only 1 on wireline reel direction.

The height h1 of each dividing wall 46, is wound in the predetermined total number of each compartment 47 in season when being m, is preferably isolated wall 46 Highly h1 is more than m × d1.In this case, as shown in fig. 15 a and fig. 15b, make the top contact of dividing wall 46 in the 2nd skeleton The inner peripheral surface of 50 and the 1st winder the 45 and the 2nd winder 55 substantially can be positioned with wick-like, set separately hence without necessity Put the component for being positioned by the 1st skeleton 40 with the 2nd skeleton 50.

As shown in Figure 13 and Figure 14, in the 1st skeleton 40, the X-direction of each dividing wall of continuous print 46 in the circumferential direction Both sides, are formed with a pair connectivity slot 46a of rectilinear in the Z-axis direction.In the middle of a pair connectivity slot 46a one such as figure Use to make coiling 22 move between adjacent compartment 47 shown in 15B.It addition, another in the middle of a pair connectivity slot 46a Individual in order to start winding or wind the end end i.e. leading part 22a of coiling 22 to make to the guiding of weld part 24 direction of terminal 70 With.

Coil device 10g involved by present embodiment is by assembling each component shown in Figure 14 and coiling being wound in 1st skeleton 40 and the 2nd skeleton 50 and manufacture, as shown in Figure 13 A, Figure 15 A and Figure 15 B, to comprise the Z-direction of terminal 70 and 72 The form exposed of upper section be contained in the inside of shell 90.In the inside of shell 90, it is filled with heat transmission resin 92.As Heat transmission resin 92 is not particularly limited, and the most such as coefficient of heat conduction is 0.5～5, preferably 1～the heat radiation of 3W/m k Property excellent resin.

As the resin that thermal diffusivity is excellent, such as, there are silicone resin, urethanes resin, epoxylite etc., wherein, excellent Select silicone resin, urethane resin.It addition, in order to improve thermal diffusivity, it is also possible to the inserts that filling heat conductivity is high in resin.

Hereinafter, an example of the manufacture method of open-wire line coil apparatus 10g for using Figure 14 to wait.Coil device 10g's In making, first, prepare to be mounted with the 1st skeleton 40 of the 1st terminal the 70 and the 2nd terminal 72.The material of the 1st skeleton 40 is the most especially Restriction, but the 1st skeleton 40 is formed by insulant such as resins.

Then, the 1st coiling 22 is wound in the periphery of the 1st hollow cylinder 44 of the 1st skeleton 40, forms inner coil 20. The 1st coiling 22 used as the formation of inner coil 20, there is no particular limitation, but can be suitably used litz wire. It addition, the terminal part i.e. leading part 22a of the 1st coiling 22 when forming inner coil 20 is banded in a part for the 1st terminal 70 And weld and connect.

Thereafter, lid 60 is installed on the both sides of the Y direction of the 2nd skeleton 50, thereafter, pacifies from the above-below direction of Z-direction Fill the core 12 being made up of the segmentation core 12a, 12a separated respectively via heat radiation thin slice 15a.That is, make in the segmentation of core 12 The front end 18 of foot 14,14 is each other, the front end 19 of batter 16,16 abuts each other.Further, in the front end 18 of middle foot 14,14 to each other Can also have gap.

As the material of each core 12, the soft magnetic material such as metal, ferrite can be enumerated, but there is no particular limitation. Core 12 is fixed on the 2nd skeleton the 50 and the 1st skeleton 40 by using adhesives bonding or to wind periphery by ribbon-shaped members 80. But, the core 12a, 12a of segmentation at heat radiation thin slice 15a under the state each other of the divisional plane 12b, 12b shown in Figure 16 It is fixed on the 2nd skeleton the 50 and the 1st skeleton 40.Heat radiation thin slice 15a can be adhered to split the divisional plane 12b of core 12a with bonding agent, 12b, it is also possible to be only merely contact.

In the present embodiment, after a series of assembling procedure, coil device 10g can be implemented dipping lacquer to process.Logical Cross above such operation, it is possible to manufacture the coil device 10g involved by present embodiment.

Thereafter, coil device 10g, as shown in Figure 13 A, Figure 15 A and Figure 15 B, to comprise the Z-direction of terminal 70 and 72 The form that upper portion is exposed is contained in the inside of the shell 90 being filled with heat transmission resin 92.Coil is filled by being filled in of resin 92 Put 10g be contained in shell 90 inside before or after can.In a word, resin 92 all with between divisional plane 12b each other The form filling contacted at least partially of heat radiation thin slice 15a, be preferably fills up to the middle foot 14 of ratio, the front end of 14 with resin 92 18 each other with the front end 19 of batter 16,16 the most more toward the upper position of Z-direction.

Especially on position each other, the front end 18 of middle foot 14,14, easily gather heat, by making heat radiation thin slice 15a be present in This part, thus make the thermal capacitance within middle foot 14 easily to the lower section of Z-direction from heat radiation thin slice 15a by heat transmission resin 92 Heat transfer, and dispelled the heat by shell 90.Shell 90 can be made up of the metal etc. that thermal diffusivity is excellent, or can also be made up of resin And cool down with the cooling component of the lower section being arranged on Z-direction.

In the coil device 10g of present embodiment, middle foot 14 and pedestal 13 are formed at the one of separation with a pair batter 16 Each the form of segmentation core 12a, 12a is separated at the divisional plane 12b, 12b of segmentation core 12a, 12a.And, dispel the heat thin slice Between divisional plane 12a, 12a each other, the middle foot 14 separated via heat radiation thin slice 15a is inserted into passing through of skeleton 40 to 15a Through hole 44a.

In the present embodiment, by making structure as described above, compared with the situation using existing E core, The stress of locality produced by the cross part at middle foot 14 and pedestal 13 can be reduced to about about less than 1/2.Therefore, In the coil device 10g involved by present embodiment, even if at core 12, produce thermal stress on 12 and also be able to effectively suppress to split Stricture of vaginas etc. produce.

Especially, as shown in figure 16, in the case of a pair E core 12 of combination, research uses length Ly of its Y direction For more than 50mm, a length of Lx of X-direction is more than 20mm, and length Lz of Z-direction is the big core of more than 10mm.With Past, in such big core, particularly thermal stress becomes big and cracks, thus uses difficulty, but in present embodiment In, by E core 12 being made the segmentation core 12a, 12a separated in the X-axis direction, it is possible to by the friendship at middle foot 14 with pedestal 13 The stress of locality produced by fork is reduced to existing about about less than 1/2, therefore uses and becomes possibility.

It addition, the middle foot 14 of E core and pedestal 13 are separated at the divisional plane 12b, 12b of segmentation core 12a, 12a, dispel the heat thin Between divisional plane 12b, 12b each other, thus thermal diffusivity also increases sheet 15a.Additionally, in the present embodiment, group Close and each there is a pair of simple shape segmentation core 12a, 12a constitute E core 12,12, thus core 12, the manufacture of 12 also becomes Easily, additionally it is possible to seek the reduction of manufacturing cost.Each segmentation core 12a has the shape that cross section is U word, and it shapes easily.And And, the E core 12,12 of the Splittable involved by present embodiment has the magnetic line of force as E core on the whole, thus core The magnetic characteristic of 12,12 is equal with general E core.

Further, in the present embodiment, at least section below along Z-direction of coil device 10g is contained in shell In 90, and it is contacted with heat transmission resin 92.By being contacted with heat transmission resin 92, thus improve thermal diffusivity further.

And, in the present embodiment, in being positioned at the divisional plane 12b, 12b of the prominent front end 18 of foot 14 mutual it Between, it is filled with heat transmission resin 92.Part in the prominent front end 18 of middle foot 14, owing to easily gathering heat, therefore passes through especially Allowing heat transmission resin 92 between this part, thus this part is dispelled the heat effectively.

The coil device 10g of present embodiment has a pair E core 12,12, the segmentation of a pair E core 12,12 each in Foot 14 is inserted into the through hole 44a of the 1st skeleton 40 from the side opposite each other of Z-direction.And, in the Z-direction of through hole 44a Way in, the prominent front end of the middle foot 14 of segmentation 18 toward each other, in the outside of skeleton 50, the side of the separation of a pair E core 12 Foot 16 docks each other.Even if employing a pair E core 12 like this, in the case of 12, in the present embodiment, stress delays Also it is excellent with characteristic and thermal diffusivity, and also contributes to the reduction of manufacturing cost.

It addition, the Z-direction that the coil device 10g of present embodiment is middle foot 14 (direction that magnetic flux flows through) is relative to setting Put the longitudinal type that face (below shell 90) is vertical.The coil device 10g of longitudinal type configures on the Z axis above-below direction of coil 20,30 Having the pedestal 13,13 of core 12, these pedestals 13,13 play the effect of suppression leakage magnetic flux vertically.Therefore, coil dress Put 10g compared with the horizontal type that the above-below direction of coil the most not quilt core covers, it is possible to effectively suppress to coil device 10g The magnetic leakage flux of above-below direction.

Further, ribbon-shaped members 80 uses mainly for fixed core 12.Ribbon-shaped members 80 such as by polyester, polyimides, The materials such as paper are constituted.In the case of making ribbon-shaped members 80 also have thermal diffusivity, ribbon-shaped members 80 is preferably by heat conductivity ratio The material of core 12 excellence is constituted, specifically, such as excellent by the heat conductivity of the metal such as aluminum, copper or their alloy etc. Material constituted.Certainly, as ribbon-shaped members 80, it is also possible to the ribbon-shaped members that combination is made up of above-mentioned various materials is come Use.In the case of the thermal diffusivity excellence of ribbon-shaped members 80, by making ribbon-shaped members 80 contact with heat radiation thin slice 15a, from And improve thermal diffusivity further.

It addition, in the present embodiment, each pedestal 13,13 and batter 16,16 by core 12 cover from outside Cover the combination of the 1st skeleton the 40 and the 2nd skeleton 50.By making such structure, it is possible to seek preventing of leakage magnetic flux.Pedestal 13,13 and the width along X-direction of batter 16,16, relative to the length along X-direction of the middle foot 14,14 of core 12 Degree, can be the same or different, but roughly the same by making, and is easily adjusted Magnetic leakage characteristics.

In the coil device 10g involved by present embodiment, as it is shown in figure 5, the 1st coiling 22 is being wound more than one layer In the case of being formed with the 1st winder 45 of dividing wall 46, after each compartment 47 winds more than one layer, at adjacent compartment 47 windings more than one layer.Then, as shown in figure 14, pass sequentially through connectivity slot 46a and make coiling 22 move to adjacent compartments 47 Wind more than one layer.Therefore, as it is shown in figure 5, the winding sequence in the 1st coiling 22 of each compartment 47 overlap is close, they voltages Difference is little, and coiling adjacent on wireline reel (Z axis) direction is mutually isolated wall 46 and insulate, thus voltage-resistent characteristic improves also And high frequency characteristics improves.

It is additionally, since to there is the most single coiling 22 along wireline reel direction at each compartment 47₁～22_nForm winding Coiling 22, the most easily prevents the appearance deviation of the winding number of each layer of coiling 22, contributes to the stabilisation of Magnetic leakage characteristics.That is, The tightest outer coil 30 controlling composition primary coil and the coupling coefficient K of the inner coil 20 constituting secondary coil, i.e. Make also to be able to use well as leakage transformer using the coil device 10g of present embodiment.

It addition, the coil device 10g of present embodiment can be as coil wireline reel relative to installation base plate face (shell 90 Below) coil device of the longitudinal type of arranged perpendicular uses, thus easily cooling is inserted into the core of hollow bulb of the 1st skeleton 40 12。

And, in the present embodiment, the 1st coiling 22 being arranged in inner circumferential side constitutes the primary coil phase with transformator Relatively there is the secondary coil (inner coil 20) of action of high voltage.Therefore, by by the secondary coil (inside cord of action of high voltage Circle 20) it is arranged in the inner side of the primary coil (outer coil 30) of low voltage effect, thus easily insulate.

Additionally, in the present embodiment, the 2nd skeleton 50 as shown in figure 14 can be at the cut-off rule 51 point parallel with wireline reel Cut, it is thus possible to easily the 2nd skeleton 50 is arranged in the periphery of the 1st skeleton 40.

Additionally, in the present embodiment, it is respectively formed at the connectivity slot 46a of dividing wall 46 along wireline reel direction not necessarily It is necessary to be arranged on straight line, but the most as shown in figure 14, with the form configuration of linearity connection.Especially, if become The connectivity slot 46a of the return path of leading part 22a is linearity in the Z-axis direction, then can be with beeline by coiling 22 The end of leading part 22a is connected to terminal 70.It addition, by making coiling 22 move to adjacent compartment 47 from each compartment 47 by being used for Dynamic connectivity slot 46a is formed at each dividing wall 46 with identical position in the circumferential direction, thus the spiral operation of coiling 22 becomes Easily.

7th embodiment

In the above-described 6th embodiment, with the 2nd embodiment shown in Fig. 7 and Fig. 8 likewise it is possible at the 2nd skeleton Wind the dividing wall 56 forming more than 1 in axial way.That is, as it is shown in fig. 7, can be along wireline reel direction by the 2nd Winder 55 is divided into the compartment 57 of more than 2.2nd coiling 32₁～32_kWith 32_k+1～32_nPermutation is wound in each compartment 57.? Dividing wall 56, is formed with the connectivity slot 56a of more than 1 along the circumferential direction.Connectivity slot 56a has the merit identical with connectivity slot 46a Energy.

In the coil device of present embodiment, it is possible to outer coil 30 segmentation constituting primary coil is joined Put.Further, be divided into each compartment 57 primary coil that is each and that configure can be made up of the most different coilings point From independent coil.Other structurally and functionally effect is same with the coil device involved by the 2nd embodiment and the 6th embodiment Sample.

8th embodiment

In the 6th embodiment, it is also possible to constitute as shown in Figure 9 A.Fill at the coil involved by present embodiment In putting, the axial lower end position of winding of lower end aligned the 1st winder 45 of the 2nd winder 55 can be made.

By doing that, it is possible to expect to improve the radiating effect from coil 20 and 30.Trace it to its cause is by dispelling the heat Portion is arranged on the bottom of coil device, is not only coil 20 and also increases from the heat-transfer character of coil 30.Further, In the present embodiment shown in Fig. 9 A, start to wind the 1st coiling 22(22 from the upper end of wireline reel₁～22_n), but the most also Permissible.Other structurally and functionally effect as the coil device involved by the 6th embodiment.

It addition, in the 6th embodiment, coil device as shown in Figure 9 B is such, wind in the 1st winder the 45 and the 2nd Overall width is made identical by portion 55, even if allowing Winding Layer difference can also adjust Magnetic leakage characteristics.Coil device shown in Fig. 9 B Compared with the coil device involved by the 6th embodiment shown in Figure 13～Figure 16, the simply wireline reel side of the 2nd skeleton 50c To length different, and the Winding Layer of the 2nd coiling 32 is different, and other are same.

It addition, in the coil device shown in Fig. 9 C, it is also possible to it is formed without dividing wall 46 but by the 1st at the 1st skeleton 40a Coiling 22(22₁～22_n) roll up as permutation, and will be formed in inner coil 20a of the 1st winder 45 as at the beginning of in transformator Level coil.In the case, in the 2nd winder 55 of the 2nd skeleton 50d, formed as the dividing wall 46 in the 6th embodiment Dividing wall 56d, and use method for winding as the 1st coiling 22 in the 6th embodiment to wind composition outer coil The 2nd coiling 32(32 of 30d₁～32_n).In the present embodiment, outer coil 30d constitutes the secondary coil of transformator.Other knots Structure and action effect are in a same manner as in the sixth embodiment.

It addition, in the above-described embodiment, outer coil 30 and inner coil 20 position with there is no need same wick-like, for Adjustment Magnetic leakage characteristics can also stagger.Other are structurally and functionally involved by effect and the 3rd embodiment and the 6th embodiment Coil device is same.

9th embodiment

In the 6th above-mentioned embodiment～the 8th embodiment, as shown in Figure 10, it is possible to so that core becomes E core 12A Combination with I core 17.As shown in fig. 15, heat radiation thin slice 15a gap 15 in the embodiment shown in Figure 10 can be made Part.That is, heat radiation thin slice 15a can between divisional plane 12b, 12b each other, and the thin slice 15a that dispels the heat divides between From middle foot 14 be inserted into the 1st through hole 44a of skeleton 40.

The I core 17 that linearity extends in the Y-axis direction is by the divisional plane in the substantially central portion being formed at its Y direction 17b, 17b are constituted by the core 17a, 17a of two segmentations.Divisional plane 17b, 17b are formed at and divisional plane 12b, and 12b is in Y direction On roughly the same position, at these divisional planes 17b, 17b each other, can hold and be clamped in divisional plane 12b, The prolongation of the heat radiation thin slice 15a each other of 12b.I.e., in the present embodiment, it is possible to use single heat radiation thin slice 15a。

I core 17, relative to the pedestal 13a on E core 12A, is arranged in along Z-direction substantially in parallel with pedestal 13a It is positioned at the end of the skeleton 40 of the side contrary with pedestal 13a.Be inserted into the through hole 44a of skeleton 40 middle foot 14a prominent before End 18a extends to the lower surface same plane of the Z-direction with through hole 44a, therefore, (divides with the pars intermedia towards I core 17 The vicinity of face 17b) form configuration.It addition, be formed at prominent front end 19a and the I type of the batter 16a at the two ends of E core 12A The both ends docking of the Y direction of core 17.

Even if in the case of employing E core 12A and I core 17 like this, in the present embodiment, stress relaxation properties Also it is excellent with thermal diffusivity, and also contributes to the reduction of manufacturing cost.I core 17 is as shown in Figure 10 in Y direction Between portion can with regulation gap separate but it also may be the single I core not separating and extending in the Y-axis direction.

Further, I core is preferably configured in the lower section of Z-direction of coil device.By configuring like this, thus E core The prominent front end 18a of the middle foot 14a in 12A is arranged in the lower side of the Z-direction of shell 90.Therefore, temperature easily rises It is partly arranged at the downside of shell 90, and makes heat transmission resin be contacted with heat radiation thin slice 15a effectively, improve heat radiation further Property.This is because, in the lower section of shell 90, cooling body is installed.Other structurally and functionally effect and the 4th embodiments and the 6th Coil device involved by embodiment is same.

10th embodiment

The coil device of present embodiment, in addition to using the heat radiation thin slice 15aA shown in Figure 17 A, also has with aforementioned The same structure of embodiment.Heat radiation thin slice 15aA has and is being parallel to divisional plane contact site 15a, Yi Ji of Z-direction The top of its divisional plane contact site 15a links or is formed with laminar upper radiating part as divisional plane contact site 15a 15b, cross section is the most T-shaped shape on the whole.Divisional plane contact site 15a as the segmentation thin slice 15a in aforementioned embodiments, And it being held in divisional plane 12b, each other, upper radiating part 15b covers the upside of the Z-direction shown in such as Figure 15 A to 12b The upper surface of the base portion 13 of segmentation core 12a, 12a, and it is contacted with the upper surface of base portion 13, absorb on the top of coil device Produced heat.Therefore, make in heat produced by the top of coil device by heat radiation thin slice 15aA and heat transmission resin 92 Easily run away to the lower section of coil device.Certainly, also from upper radiating part 15b self-radiating.

It addition, in the present embodiment, as seen in this fig. 17b, a pair heat radiation thin slice 15aA1 of compound section L-shaped shape, whole Can also be as the heat radiation thin slice 15aA of the most T-shaped shape as shown in Figure 17 A on body.Each heat radiation thin slice 15aA1 has It is parallel to the divisional plane contact site 15a1 of Z-direction and links on the top of its divisional plane contact site 15a or be formed with The laminar upper radiating part 15b1 extended to a side of Y direction.A pair heat radiation thin slice 15aA1 has line pair relative to Z axis The cross sectional shape claimed.

Divisional plane contact site 15a1 is as the segmentation thin slice 15a in aforesaid embodiment, and is held in divisional plane Each other, upper radiating part 15b1 covers the segmentation core 12a of the upside of the Z-direction shown in such as Figure 15 A, 12a's for 12b, 12b The upper surface of base portion 13, and it is contacted with the upper surface of base portion 13, absorb in heat produced by the top of coil device.Cause This, ground makes easily to run away to line in heat produced by the top of coil device by heat radiation thin slice 15aA1 and heat transmission resin 92 The lower section of coil apparatus.Certainly, also from upper radiating part 15b1 self-radiating.

Further, together or can separate with upper radiating part with upper radiating part 15b, 15b1 at heat radiation thin slice 15aA, 15A1 Arrange diagram omit lower radiating part, the segmentation core 12a of the such as downside of the Z-direction shown in coverage diagram 15A, the base of 12a The lower surface in seat portion 13, and it is contacted with the lower surface of base portion 13, absorb in heat produced by the bottom of coil device.Coil fills The bottom put (lower surface of the base portion 13 of segmentation core 12a, 12a) is owing to being contacted with heat transmission resin, therefore, it is possible to well Dispel the heat.Other structurally and functionally effect as the coil device involved by the respective embodiments described above.

Further, the present invention is not limited to above-mentioned embodiment, can carry out various within the scope of the invention Change.

Such as, in the above-described embodiment, will adjoin each other along the 1st coiling 22 or the wireline reel of the 2nd coiling 32 Coiling implement multiple dividing walls 46,56,56d of separating each other, formed at predetermined intervals along wireline reel, but at this In bright, dividing wall might not be necessary.I.e., in the present invention, the method for winding of the 1st coiling the 22 and the 2nd coiling 32 does not has spy Other restriction, can be that both of which can be with the common method for winding that need not dividing wall.

It addition, in coil device involved in the present invention, the shell 90 being filled with heat transmission resin 92 might not have Necessary.Additionally, in the present invention, there is no particular limitation for the shape of heat radiation thin slice.Even if it addition, using more than two pieces scattered In the case of hot thin slice, also might not be necessary to be arranged in relative position.

Claims

1. a coil device, it is characterised in that:

It is to there is E core, skeleton and be arranged on the coil device of coil of periphery of described skeleton,

Described E core, has:

Pedestal, with comprise orthogonal 1st axle, the 2nd axle and the 3rd axle when described in the plane of the 1st axle and the 2nd axle the most flat OK；

A pair batter, prominent to described 3rd direction of principal axis respectively from the two ends of described pedestal along described 2nd direction of principal axis；And

Middle foot, between the pair of batter, prominent to described 3rd direction of principal axis from described pedestal,

Described middle foot and pedestal, be formed at each form of a pair segmentation core of separation, at described point with batter described in a pair The divisional plane cutting core is separated,

At described divisional plane each other, it is formed with the gap of regulation,

The described middle foot separated is inserted into the through hole of described skeleton,

Accommodating in the enclosure along described 3rd axial at least section below of described coil device, and it is contacted with heat transmission Resin,

Be located at least in described middle foot prominent front end divisional plane each other, be filled with described heat transmission resin.

2. coil device as claimed in claim 1, it is characterised in that:

There is E core described in a pair,

The each middle foot of the segmentation of E core described in a pair, is inserted into passing through of described skeleton from described 3rd axial side opposite each other Through hole,

In the described 3rd axial way of described through hole, the prominent front end of the described middle foot of segmentation is mutually relative,

In the outside of described skeleton, described in a pair, the batter of the separation of E core docks each other.

3. coil device as claimed in claim 1, it is characterised in that:

There is described E core and I core,

Described I core, relative to the described pedestal of described E core, is arranged in along the described 3rd substantially in parallel with described pedestal Direction of principal axis and be positioned at the end of the described skeleton of the side contrary with described pedestal,

It is inserted into the prominent front end of the described middle foot of described through hole, with the form configuration relative with the pars intermedia of described I core,

It is formed at the prominent front end of the batter at the both ends of described E core, with the described 2nd axial two ends of described I core Portion docks.

4. coil device as claimed in claim 3, it is characterised in that:

Described I core separates with the gap of regulation at described pars intermedia.

5. a coil device, it is characterised in that:

Described E core, has:

Heat radiation thin slice between each other at least some of of described divisional plane,

The described middle foot separated via described heat radiation thin slice is inserted into the through hole of described skeleton.

6. coil device as claimed in claim 5, it is characterised in that:

Described coil device along described 3rd axial at least section below is contained in shell, and be contacted with heat transmission Resin.

7. coil device as claimed in claim 6, it is characterised in that:

Described heat radiation thin slice between be located at least in described middle foot prominent front end divisional plane each other, described heat radiation thin slice It is contacted with described heat transmission resin.

8. the coil device as described in any one in claim 5～7, it is characterised in that:

Described heat radiation thin slice has the above at least one of upper radiating part of the Z-direction covering described pedestal.

9. the coil device as described in any one in claim 5～7, it is characterised in that:

There is E core described in a pair,

The each middle foot of the segmentation of E core described in a pair, from described 3rd axial side opposite each other, is inserted into described skeleton Through hole,

10. the coil device as described in any one in claim 5～7, it is characterised in that:

There is described E core and I core,

11. coil device as claimed in claim 10, it is characterised in that:

Described I core described mid portion from, described heat radiation thin slice is between parting surface each other.