JP2011114159A - Printed board laminate and connection terminal coupler - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a printed board laminate that reliably positions and holds a connection terminal to each through-hole of a plurality of printed boards without using any separate member, such as a terminal supporting rack, ensures excellent connection reliability of a soldering unit, and has a new structure. <P>SOLUTION: A plurality of connection terminals 16 are aligned and disposed along an alignment direction of the through-holes 18a, 18b between two printed boards 12a, 12b. A bending unit 24 bent in the alignment direction is formed in an intermediate portion of the plurality of connection terminals 16. Each of edges 22a, 22b of the connection terminal 16 is inserted into the through-holes 18a, 18b mutually shifted in the alignment direction. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a printed circuit board laminate in which two printed circuit boards that are housed in an electric connection box mounted on an automobile and constitute an internal circuit are connected by connection terminals. Moreover, this invention relates to the connection terminal coupling body used for manufacture of such a printed circuit board laminated body.

  2. Description of the Related Art Conventionally, a printed circuit board on which electrical components and electronic components are mounted is accommodated in an electrical junction box mounted on an automobile in order to perform efficient power supply and signal exchange. In particular, in recent years, in order to cope with the rapid increase in in-vehicle electrical components, two printed boards are stacked with an insulating separator interposed therebetween, and each printed circuit is connected by a plurality of connection terminals inserted between the boards. A printed circuit board laminate is accommodated. For example, those described in Japanese Patent Application Laid-Open No. 2009-26464 (Patent Document 1). As a result, power and control signals can be efficiently distributed to more electrical components.

  By the way, in such a printed circuit board laminate, it is required to stably position, hold and solder both ends of the plurality of connection terminals with respect to the through holes of the two printed circuit boards. Further, when soldering, there is a possibility that solder cracks may occur in the soldering portions of the connection terminals due to expansion of the insulating separator interposed between the printed circuit boards, so that countermeasures are required.

  Therefore, as described in FIG. 1 and FIG. 2 of Patent Document 1, a plurality of connection terminals are connected to through holes of a plurality of printed boards by using a synthetic resin terminal support base that aligns and holds the connection terminals at a predetermined pitch. For this reason, a structure that reliably holds the positioning is employed. In addition, a bending portion for stress relaxation is provided at an intermediate position between the connection terminals to prevent solder cracks, thereby ensuring connection reliability of the soldered portion.

  However, in the prior art described in Patent Document 1, since a terminal support base for supporting a plurality of connection terminals is separately required, the number of parts increases, resulting in a complicated manufacturing process and high cost. In particular, the greater the length of the terminal support, the greater the stress on the soldered part due to the difference in thermal expansion from the printed circuit board during soldering, which may cause solder cracks due to the terminal support. there were. In addition, the bent portion provided at the intermediate portion of the terminal greatly protrudes on the mounting surface of the printed board and occupies the board use area, and there is room for improvement in increasing the density of the printed board.

JP 2009-26464 A

  The present invention has been made in the background of the above-mentioned circumstances, and the problem to be solved is that the connection terminal can be reliably positioned and held with respect to each through hole of a plurality of printed circuit boards without using a terminal support base. Another object of the present invention is to provide a printed circuit board laminate having a novel structure capable of ensuring high connection reliability of a soldered portion.

  Another object of the present invention is to provide a new connection terminal assembly used for manufacturing such a printed circuit board laminate.

  A first aspect of the present invention relating to a printed circuit board laminate is a plurality of printed circuit boards each provided with two printed boards laminated in parallel and spaced apart from each other with an insulating separator made of a non-conductive synthetic resin interposed therebetween. Printed circuit board laminates connected to each other by a plurality of connection terminals soldered with both ends inserted into the through-holes, wherein the plurality of connection terminals are arranged in the alignment direction of the plurality of through-holes The two sheets that are arranged along the line and that are bent in the alignment direction at an intermediate portion of each of the plurality of connection terminals, and through which both ends of the plurality of connection terminals are inserted. The through-holes of the printed circuit board are shifted from each other in the alignment direction.

  According to the printed circuit board laminate having the structure according to this aspect, the bent portion is formed in the intermediate portion of each of the plurality of connection terminals arranged in alignment, and is inserted into each through hole of the two printed circuit boards. Both end portions are extended on different straight lines. As a result, both end portions of each connection terminal are respectively inserted and soldered through the respective through-holes arranged on a non-collinear line in the stacking direction of the two printed boards. As a result, since the rotation center axes of both ends of the connection terminal are different from each other in the state where the two printed circuit boards are inserted into the through holes, rotation of the connection terminal can be prevented. Therefore, both ends of each connection terminal can be reliably positioned and held with respect to each through hole of the two printed boards without using another member such as a terminal support.

  Further, according to this aspect, the bent portion of the connection terminal is bent in the alignment direction of the plurality of connection terminals. As a result, the entire connection terminals including both ends are arranged in a single arrangement plane including a straight line extending in the through hole arrangement direction and a straight line extending in the stacking direction of the two printed boards. As a result, the bent portion can be prevented from projecting greatly from the through hole forming portion, and the printed circuit board can be effectively used.

  In addition, since a bent portion is formed in the middle part of each connection terminal, even when two printed circuit boards are separated from each other by the thermal expansion of the insulating separator under a high temperature environment such as soldering, The external force exerted on the connection terminal can be absorbed by the bent portion. Thereby, it is possible to advantageously prevent the occurrence of solder cracks in the soldering portion of the connection terminal, and to ensure high connection reliability of the soldering portion.

  According to a second aspect of the present invention relating to a printed circuit board laminate, in the one described in the first aspect, an insertion position into one through-hole of the one printed circuit board is defined at one end of each of the plurality of connection terminals. The latching protrusion to be provided is provided.

  According to this aspect, the vertical alignment of each connection terminal can be set with high accuracy. Thereby, the vertical alignment of the plurality of connection terminals can be easily and accurately aligned. In this aspect, more preferably, the locking projection is locked to the outer opening edge of the through hole and locked without press-fitting. In this way, the connection terminal can be easily inserted into the through hole, and the risk of damaging the through hole during insertion into the through hole can be reduced.

  A third aspect of the present invention relating to a printed circuit board laminate is the one described in the first or second aspect, wherein the bent portions of the plurality of connection terminals are provided at the same position in the length direction of each terminal. And inclined at 30 to 60 ° with respect to the extending direction of the end.

  According to this aspect, the bent portions of the plurality of connection terminals are disposed at equal positions in the stacking direction of the printed circuit boards between the two printed circuit boards. Then, by inclining the bent portion at an acute angle with respect to the extending direction of the end portion, the adjacent connection terminals can be arranged closer to each other than when the bent portion is bent at a right angle. . As a result, a plurality of connection terminals can be arranged at a more narrow pitch, and a large number of connection terminals can be arranged in a space efficient manner.

  And the inclination angle with respect to the extending direction of the edge part of a bending part was set in the range of 30-60 degrees, and the suppression effect of a solder crack and the arrangement | sequence of pinching pitch can be highly compatible. That is, by setting the inclination angle to 30 ° or more, the inclination angle of the bent portion with respect to the extending direction of the end portion can be secured appropriately, and the external force absorbing effect at the bent portion can be effectively exhibited. At the same time, by setting the inclination angle to 60 ° or less, it is possible to arrange the pinching pitch while avoiding the possibility of contact between adjacent connection terminals in the arrangement direction.

  The present invention relating to the connection terminal connecting body is parallel to the band-shaped metal carrier at a predetermined interval in the length direction of the carrier in a state where the plurality of connection terminals have their central axes oriented in the width direction of the carrier. In the connection terminal connecting body that is locked and fixed, the connection terminal according to any one of the first to third aspects is used as the connection terminal, while each of the carrier terminals from one side in the width direction is used. A bent portion and one end portion of the connection terminal protrude, and the other end portion of each connection terminal protrudes from the other side in the width direction of the carrier. By arranging the portion to be bent in the length direction of the carrier, in each of the plurality of connection terminals, the one end portion and the other end portion are shifted from each other in the length direction of the carrier. That And features.

  In the connection terminal assembly having a structure according to the present invention, a strip-shaped metal carrier to which a large number of connection terminals are locked and fixed is wound around a reel in the length direction, and an arbitrary number of connection terminals are provided from the reel. An arbitrary number of connection terminals are cut out by unwinding and cutting the metal carrier. And according to this invention, each connection terminal is latched and fixed to the metal carrier so that the bending direction of the bending part of each connection terminal may align with the length direction of a metal carrier. Thereby, it is avoided that the bent portion protrudes in the height direction orthogonal to the plane in which the band-shaped metal carrier extends, and the connection terminal assembly including the plurality of connection terminals and the metal carrier is flat as a whole. Shape. As a result, it is possible to avoid catching the bent portion during winding and unwinding on the reel, and a large number of connection terminals can be stored efficiently and compactly.

  When the printed circuit board laminate according to the present invention is manufactured using the connection terminal assembly having the structure according to this aspect, both ends of the connection terminal are shifted from each other in the length direction of the metal carrier. In this state, the plurality of connection terminals are locked and fixed in series. Therefore, the connection terminal assembly is cut out with an arbitrary number of terminals and inserted into the through-holes of two printed circuit boards that are spaced apart from each other in parallel. It can be easily inserted into each through-hole whose position is shifted. Thereby, the rotation of the connection terminal between the two printed boards can be advantageously prevented, and the connection reliability of the solder can be ensured.

  In the printed circuit board laminate having the structure according to the present invention, both end portions of the connection terminals are respectively inserted into the through holes of the two printed circuit boards that are shifted from each other in the alignment direction. Accordingly, the rotation of the connection terminal can be suppressed without using a separate member such as a terminal support, and the positioning with respect to the through hole can be performed reliably, and stable soldering can be performed. Furthermore, when the two printed circuit boards are separated from each other due to thermal expansion of the insulating separator, etc., since the relative displacement of the two printed circuit boards can be absorbed by the bent portion formed in the connection terminal, the connection terminal It is possible to suppress the occurrence of solder cracks in the soldering portion. Thereby, the high connection reliability of a soldering part is securable. In addition, since the bent part is bent in the alignment direction of the plurality of connection terminals, it is avoided that the bent part protrudes from the alignment direction of the connection terminals, and the plurality of connection terminals are arranged with excellent space efficiency. I can do it.

  And according to the connection terminal coupling body made into the structure according to this invention, the bending part of the connection terminal latched and fixed to the carrier is bent in the length direction of the carrier. As a result, it is possible to prevent the bent portion from being caught when the reel is wound or unwound, and a large number of connection terminals can be stored efficiently and compactly. Furthermore, since both ends of the connection terminal locked and fixed to the carrier are shifted from each other in the length direction of the carrier, it is easy to insert the two printed circuit boards shifted in the alignment direction into the through holes. Can be done.

The side view which shows the printed circuit board laminated body as one Embodiment of this invention. The principal part enlarged side view of the printed circuit board laminated body shown in FIG. The principal part enlarged view of the upper surface in the state which removed one printed circuit board in the printed circuit board laminated body shown in FIG. The side view of the connecting terminal used for the printed circuit board laminated body shown in FIG. The A arrow directional view in FIG. 4 of the connection terminal shown in FIG. The perspective view which shows the connection terminal coupling body as one Embodiment of this invention partially. Explanatory drawing for demonstrating the connection terminal of a different aspect used for the printed circuit board laminated body of this invention.

  Embodiments of the present invention will be described below with reference to the drawings.

  First, while showing the printed circuit board laminated body 10 as one Embodiment of this invention in FIG. 1, the principal part of the printed circuit board laminated body 10 is expanded and shown in FIG. The printed circuit board laminate 10 is housed in, for example, an electrical junction box of an automobile and constitutes an internal circuit of the electrical junction box, and a pair of printed circuit boards 12a and 12b are laminated with an insulating separator 14 interposed therebetween. The plurality of connection terminals 16 are electrically connected to each other.

  The pair of printed circuit boards 12a and 12b are conventionally known ones, in which printed wiring is formed on an insulating plate. As shown in FIG. 3, a plurality of through holes 18 a and 18 b are formed on the printed circuit boards 12 a and 12 b so as to be aligned on a straight line at predetermined equal intervals. These through holes 18a and 18b are aligned along the extending direction of the edge 20 of the printed circuit boards 12a and 12b at the peripheral ends of the printed circuit boards 12a and 12b. Further, the arrangement pitch of the through holes 18a in the printed board 12a and the arrangement pitch of the through holes 18b in the printed board 12b are equal to each other. Thus, in the stacked state of the printed circuit boards 12a and 12b, each through hole 18a and each through hole 18b are positioned on the same straight line extending in the stacked direction of the printed circuit boards 12a and 12b (vertical direction in FIG. 2). It is like that. In the present embodiment, the inner diameters of the through holes 18a and 18b are each set to 1 mm. The arrangement pitch of the through holes 18a and 18b is set to 2.2 mm.

  On the other hand, the insulating separator 14 is made of a non-conductive synthetic resin and has a substantially rectangular block shape having a predetermined thickness dimension (the vertical dimension in FIGS. 1 and 2). The insulating separator 14 is placed between the two printed circuit boards 12a and 12b by being superimposed on the opposite surface of each of the pair of printed circuit boards 12a and 12b and fixed by bonding or the like as necessary. . As a result, the separation distance between the two printed circuit boards 12a and 12b in the stacking direction is defined by the insulating separator 14, and the two printed circuit boards 12a and 12b are separated from each other and stacked in parallel. Further, when the electrical components are connected to the printed circuit boards 12a and 12b from the outside in the stacking direction, the insulating separator 14 supports the printed circuit boards 12a and 12b, so that the deformation deformation of the printed circuit boards 12a and 12b is prevented. It has become.

  The pair of printed circuit boards 12 a and 12 b are electrically connected to each other through a plurality of connection terminals 16. The plurality of connection terminals 16 have the same shape. 4 and 5 show the connection terminal 16. The connection terminal 16 has a predetermined length of a metal wire in which a plating layer made of a conductive metal material such as tin or gold is applied over the entire surface of a base material made of a conductive metal material such as copper or iron. It is cut and formed by. As the cross-sectional shape of the connection terminal 16, a rectangular shape such as a square or a rectangle, a polygonal shape, a circular shape including an ellipse, or any other arbitrary shape can be appropriately employed. The connection terminal 16 in the present embodiment covers substantially the entire length excluding both end edges in the lengthwise direction (vertical direction in FIGS. 4 and 5) and a formation portion of a locking projection 26 described later. Thus, a substantially constant square cross-sectional shape with one side of 0.64 mm is formed.

  In the length direction of the connection terminal 16, a bent portion 24 is formed at a position slightly deviated toward the one end portion 22b between both end portions 22a and 22b. The bent portion 24 is integrally formed with the connection terminal 16 by bending the cutting wire constituting the connection terminal 16 by pressing or the like. The bent portion 24 is a crank-shaped bent portion, and the end portion 22a and the end portion 22b extend from both ends of the bent portion 24 in opposite directions and in parallel. The bent portion 24 is in a plane including a straight line extending in the alignment direction (left and right direction in FIG. 4) of the plurality of connection terminals 16 and a straight line extending in the axial direction (up and down direction in FIG. 4) of the connection terminal 16. It is bent at. As a result, as shown in FIG. 4, both end portions 22a and 22b extend on different straight lines that are shifted from each other in the alignment direction of the connection terminals 16 (left and right direction in FIG. 4). Thus, it extends on the same straight line in the alignment direction view. In this embodiment, the end portions 22a and 22b have a separation distance in the alignment direction of the connection terminals 16 equal to one of the arrangement pitches of the through holes 18a and 18b.

  The inclination angles of the bent portions 24 with respect to the extending directions of both end portions 22a and 22b extending in parallel with each other are equal to each other at the complex angle of the parallel lines. The inclination angle α of the bent portion 24 with respect to the extending direction of the both end portions 22a and 22b: α is set to an acute angle of less than 90 °, preferably in the range of 30 ° to 60 °, more preferably , About 45 °. By setting the inclination angle: α to 30 ° or more, the bending amount of the bending portion 24 with respect to the end portions 22a, 22b can be appropriately secured, and the stress absorption effect described later can be effectively obtained, and the inclination angle: By setting α within 60 °, it is possible to arrange a plurality of connection terminals 16 with a narrow pitch.

  In the connection terminal 16, a pair of locking protrusions 26 and 26 are formed on one end 22 b. These locking projections 26 and 26 have the same shape. The locking protrusion 26 is a protrusion that protrudes outward in the direction perpendicular to the axis of the end 22b (the left-right direction in FIG. 4). In particular, the locking protrusion 26 in the present embodiment gradually has a protruding height from the front (downward in FIG. 4) to the rear (upward in FIG. 4) in the insertion direction of the end 22b into the through hole 18b. The taper shape is increased. In the locking protrusions 26, 26, the width dimension w formed by the rear end edge part (the upper end edge part in FIG. 4) in the insertion direction in which the protrusion height is maximized is larger than the inner diameter dimension of the through hole 18b. The outer diameter of the land 28 is preferably smaller than the land 28 so as not to protrude outward in the radial direction of the land 28 (see FIG. 3) in the through hole 18b.

  The locking protrusions 26 and 26 are preferably subjected to a forging process such as a single press or a plurality of tappings in the length direction with respect to the cutting wire forming the connection terminal 16. The cutting wire is formed by plastic deformation. In this way, the plating layer deposited on the entire peripheral surface of the cutting wire can be left on the locking projection 26, and solder wettability can be ensured. As a result, the locking projection 26 is formed to be depressed at the end 22b, and the depressions 30, 30 are formed on both sides (right and left sides in FIG. 5) perpendicular to the protruding direction of the locking projection 26, respectively. Has been. These recessed portions 30 and 30 are positioned in the through hole 18b in a state where the end portion 22b is inserted into the through hole 18b, and the solder is inserted into the recessed portions 30 and 30 so as to be more stable. Soldering can be performed.

  The printed circuit board laminate 10 using a plurality of such connection terminals 16 is assembled as follows. First, the end 22b of the connection terminal 16 is inserted into each through hole 18b of the printed board 12b from the side facing the printed board 12a. The end 22b is loosely inserted in a non-contact state with respect to the inner peripheral surface of the through hole 18b. The engaging projections 26 and 26 are engaged with the lands 28 that form the outer opening edge of the through hole 18b, whereby the position of the insertion end of the connection terminal 16 into the through hole 18b is defined.

  An insulating separator 14 is placed on the surface of the printed circuit board 12b facing the printed circuit board 12a before or after the connection terminal 16 is inserted, and is fixed to the printed circuit board 12b by bonding or the like as necessary. .

  Next, the other printed circuit board 12a is superimposed on the printed circuit board 12b. As a result, the end portions 22a of the plurality of connection terminals 16 respectively inserted into the through holes 18b of the printed board 12b are inserted into the through holes 18a of the printed board 12a. The end 22a is loosely inserted in a non-contact state with respect to the inner peripheral surface of each through hole 18a. Further, the surface of the printed circuit board 12a facing the printed circuit board 12b is superimposed on the insulating separator 14, and is fixed by adhesion or the like as necessary.

  Then, the end 22a of the connection terminal 16 protruding outward in the stacking direction on the printed circuit board 12a is soldered to the printed circuit board 12a, so that the printed wiring and the connection terminal 16 (not shown) provided on the printed circuit board 12a are connected. Electrically connected. Similarly, an end portion 22b of the connection terminal 16 protruding outward in the stacking direction on the printed circuit board 12b is soldered to the printed circuit board 12b, so that a printed wiring and a connection terminal 16 (not shown) provided on the printed circuit board 12b are connected. Are electrically connected. Thereby, both printed circuit boards 12a and 12b are electrically connected to each other through the plurality of connection terminals 16, and the printed circuit board laminate 10 is formed.

  In such a printed board laminate 10, as shown in FIG. 2, the plurality of connection terminals 16 are arranged along the alignment direction of the through holes 18 a and 18 b. In each connection terminal 16, the bent portion 24 is formed, so that the end portions 22 a and 22 b are inserted through the through holes 18 a and 18 b positioned so as to be shifted from each other in the alignment direction. In particular, in the present embodiment, the separation distance of the end portions 22a and 22b in the alignment direction of the connection terminals 16 is the alignment interval of the plurality of through holes 18a and 18b formed in alignment on the printed circuit boards 12a and 12b, respectively. The through hole 18a through which the end 22a is inserted and the through hole 18b through which the end 22b is inserted are shifted from each other by one pitch in the alignment direction.

  Thereby, since the central axes of both end portions 22a and 22b of the connection terminal 16 are different from each other, the connection terminal 16 can be rotated in the assembled state to the printed circuit boards 12a and 12b without using a separate terminal support. Thus, it is possible to reliably position the through holes 18a and 18b. As a result, the connection terminal 16 can be soldered more stably. In particular, in the present embodiment, by connecting the both end portions 22a and 22b into the respective through holes 18a and 18b, the connection to be inserted while reducing the possibility of damage to the through holes 18a and 18b and the printed circuit boards 12a and 12b. The terminal 16 can be reliably positioned in the through holes 18a and 18b.

  Further, the bent portions 24 of the plurality of connection terminals 16 are bent in the alignment direction of the connection terminals 16. Accordingly, as shown in FIG. 3, the entire connection terminal 16 including the bent portion 24 includes a single line including a straight line extending in the alignment direction of the connection terminals 16 and a straight line extending in the stacking direction of the printed circuit boards 12a and 12b. Arranged in the array plane. As a result, the plurality of connection terminals 16 can be arranged in a space efficient manner. In particular, in the present embodiment, the through holes 18a and 18b are aligned along the edge 20 of the printed circuit boards 12a and 12b at the peripheral ends of the printed circuit boards 12a and 12b. The arrangement area of the central portion can be secured more effectively.

  Furthermore, the inclination angle α of the bent portion 24 is set to an acute angle, and the bent portions 24 of the plurality of connection terminals 16 are at equal positions in the length direction of the connection terminal 16 (vertical direction in FIG. 2). Is provided. As a result, the bent portions 24 of the connection terminals 16 extend parallel to each other in the alignment direction of the connection terminals 16 so as to be inclined with respect to the stacking direction of the printed circuit boards 12a and 12b. As a result, compared to the case where the bent portion 24 is bent at a right angle, the connection terminals 16 and 16 adjacent in the alignment direction can be disposed closer to each other. As a result, the plurality of connection terminals 16 can be aligned and arranged at a narrower pitch, and a large number of connection terminals 16 can be aligned and arranged more efficiently. Further, by defining the insertion end position with the locking projections 26, 26 formed on the connection terminal 16, each bent portion 24 can be positioned with high accuracy.

  Since the bent portion 24 is formed in the intermediate portion of the connection terminal 16, the printed circuit board laminate 10 is exposed to a high temperature environment such as soldering, and both printed circuit boards are deformed by deformation such as thermal expansion of the insulating separator 14. Even when the separation distance of 12a and 12b changes, the external force exerted on the soldered portions of the both end portions 22a and 22b can be absorbed by the bent portion 24. Thereby, generation | occurrence | production of the solder crack in the soldering part of both ends 22a and 22b can be reduced, and the high connection reliability in a soldering part can be ensured.

  Next, FIG. 6 shows a connection terminal connector 40 as an embodiment of the present invention that is preferably used when the printed circuit board laminate 10 is manufactured. The connection terminal coupling body 40 has a structure in which a plurality of the connection terminals 16 are locked and fixed to a metal carrier 42.

  The carrier 42 is a band-shaped integrally formed product formed by subjecting a thin metal plate made of brass or the like to press punching or bending. In the carrier 42, a plurality of terminal connecting portions 44 are juxtaposed in a connected state in the length direction of the carrier 42 (left and right direction in FIG. 6). A pair of grip pieces 46 are integrally formed at both end portions in the width direction orthogonal to the length direction of the carrier 42 in the terminal connecting portion 44. The gripping piece 46 is a U-shaped protruding piece in which an opening 48 is formed that rises in a height direction perpendicular to the plane in which the band-shaped carrier 42 spreads and opens outward in the height direction. . And the opening part 48 of both the holding pieces 46 and 46 is located on the same straight line in the width direction of the terminal connection part 44. As shown in FIG. The gripping pieces 46 are integrally formed with the carrier 42 by bending and raising U-shaped protruding pieces protruding on both sides in the width direction on the metal plate forming the carrier 42.

  Further, the terminal connecting portion 44 is integrally formed with a locking piece 50 at a position slightly deviated toward the one holding piece 46 in the width direction. The locking piece 50 is connected to the opening portions 48 and 48 of the gripping pieces 46 and 46 and deviates from the arrangement straight line extending in the width direction of the terminal connecting portion 44. In addition, the protruding end edge portion has an inverted L shape protruding toward the arrangement straight line side of the openings 48 and 48. The locking piece 50 is integrally formed with the carrier 42 by cutting and raising a metal plate forming the carrier 42.

  In addition, a pilot hole 52 is provided in an intermediate portion in the width direction of the carrier 42. The pilot hole 52 is formed between the pair of terminal connection portions 44 and 44 adjacent in the length direction of the carrier 42 so as to straddle the pair of terminal connection portions 44 and 44. By feeding the teeth of a feed gear (not shown) into the pilot hole 52, the carrier 42 can be fed in the length direction.

  Then, a plurality of the gripping pieces 46, 46, the locking pieces 50, and the pilot holes 52 are formed at predetermined intervals in the length direction of the carrier 42, so that the carrier 42 is connected to the plurality of terminal connecting portions 44. It is an integrally molded product arranged in parallel in the length direction. The holding pieces 46 and 46 and the locking pieces 50 are formed at intervals equal to the alignment intervals of the plurality of through holes 18a and 18b in the printed circuit boards 12a and 12b in the length direction of the carrier 42. The carrier 42 is formed of a thin metal plate, and the carrier 42 is bent and cut on a straight line l extending in the width direction at the connecting portion of the terminal connecting portions 44 and 44 adjacent in the length direction. It is possible.

  The connection terminal 16 is locked and fixed to each terminal connecting portion 44 of the carrier 42 having such a structure. The connection terminal 16 has a linear portion between the bent portion 24 and the end portion 22a fitted into the openings 48 and 48 of the grip pieces 46 and 46, and between the grip pieces 46 and 46, the opening portion 48, 48 is locked by a locking piece 50 from the side opposite to the opening direction. As a result, the plurality of connection terminals 16 are sandwiched between the gripping pieces 46 and 46 and the locking pieces 50 and are locked and fixed to the respective terminal connecting portions 44.

  The connection terminal 16 is locked to the carrier 42 with its center axis oriented in the width direction of the carrier 42 by the gripping pieces 46, 46 being arranged on a straight line extending in the width direction of the terminal connecting portion 44. It is fixed. Since the grip pieces 46, 46 of the plurality of terminal connecting portions 44 are formed at intervals equal to the arrangement interval of the through holes 18a, 18b in the printed circuit boards 12a, 12b in the length direction of the carrier 42. The plurality of connection terminals 16 locked and fixed to the respective terminal connecting portions 44 are arranged in parallel in the longitudinal direction of the carrier 42 with an interval equal to the arrangement interval of the through holes 18a and 18b. .

  In the locked state to the terminal connecting portion 44, one end 22 a of the connection terminal 16 protrudes outward in the width direction of the carrier 42 from the grip piece 46 proximal to the locking piece 50. At the same time, the other end 22 b and the bent portion 24 protrude outward in the width direction of the carrier 42 from the holding piece 46 distal to the locking piece 50. Further, the connection terminal 16 is locked and fixed to the terminal connecting portion 44 so that the bent portion 24 bends in the length direction of the carrier 42 within the plane in which the carrier 42 extends. That is, the plurality of connection terminals 16 are aligned and locked in the length direction of the carrier 42 in the aligned state in the assembled state to the printed circuit boards 12a and 12b. Thus, the pair of end portions 22 a and 22 b formed with the bent portion 24 interposed therebetween are positioned so as to be shifted from each other in the length direction of the carrier 42. As described above, since the pair of end portions 22a and 22b is separated by one pitch of the through holes 18a and 18b in the alignment direction of the connection terminals 16, the end portions 22a and 22b 42 is shifted by one pitch of the through holes 18a, 18b in the length direction of 42.

  In the connection terminal connecting body 40 having such a structure, the connecting portions of the terminal connecting portions 44 and 44 adjacent in the length direction are bent on a straight line l extending in the width direction and wound around a reel or the like (not shown). Taken and stored. Further, an arbitrary number of connection terminals 16 are cut out by unwinding a desired number of connection terminals 16 from the reel and cutting the connection terminals 16 at the connecting portions of the terminal connecting portions 44 and 44. And according to this embodiment, since the bending part 24 is bent in the length direction of the carrier 42, the protrusion of the bending part 24 from the plane which the carrier 42 spreads is avoided, and the connection terminal 16 is included. The whole connection terminal coupling body 40 is formed into a substantially flat shape that spreads within a single plane. As a result, it is possible to avoid the bent portion 24 from being caught when winding or unwinding the reel, and the plurality of connection terminals 16 can be stored efficiently and compactly.

  When the printed circuit board laminate 10 is manufactured using such a connection terminal connecting body 40, the connection terminals 16 may be removed from the carrier 42 one by one and inserted into the through holes 18b of the printed circuit board 12b. Although the arrangement pitch of the connection terminals 16 on the carrier 42 is equal to the arrangement pitch of the through holes 18b, both end portions 22a and 22b are shifted from each other in the length direction of the carrier 42. A desired number of reels are unwound from the reel, and the end portions 22a of the plurality of connection terminals 16 projecting outward in the width direction of the carrier 42 are put together with a jig, and the arrangement pitch on the carrier 42 is maintained while maintaining the arrangement pitch. By removing, a plurality of connection terminals 16 can be inserted into each through hole 18b at a time. Thereby, the improvement of assembly efficiency can be aimed at. It is also possible to remove the carrier 42 after cutting the carriers 42 in a desired number and inserting the plurality of connection terminals 16 through the through holes 18b at one time while maintaining the connection state to the carrier 42. . In this way, since the arrangement pitch of the connection terminals 16 is maintained by the carrier 42, the insertion into the through holes 18b can be performed more stably.

  As mentioned above, although embodiment of this invention was explained in full detail, this invention is not limited by the specific description. For example, the separation distance in the alignment direction of the both ends of the connection terminal is not limited to one pitch of the through hole as in the above embodiment, but by adjusting the inclination angle of the bent portion, the length dimension, etc., two pitches It is also possible to set a separation distance of more than minutes. Moreover, you may form a bending part in multiple places between both ends.

Further, the locking protrusion 26 in the connection terminal 16 is not necessarily required,
The specific shape is not limited, and is not a tapered shape as in the above-described embodiment, but may be a rectangular plate shape protruding in a direction perpendicular to the axis of the connection terminal 16, for example.

  Further, as shown in FIG. 7, the connection terminals 62 can be formed by press punching the conductive metal plate 60 or the like. In addition, in FIG. 7, about the site | part made into the structure similar to the said embodiment, the code | symbol same as the said embodiment is attached | subjected in the figure. The connection terminal 62 formed in this way has a flat cross-sectional shape such as a rectangle. As is clear from this, the cross-sectional shape of the connection terminal in the present invention may be a flat cross-sectional shape or the like. In the case where the connection terminal 62 is formed by punching the metal plate 60, the bent portion 24 is bent on the plane of the metal plate 60. The plurality of connection terminals 62 are aligned and arranged at predetermined intervals in the long side direction of the flat cross section (left and right direction in FIG. 7), and are inserted into a through-hole of a printed board (not shown) and soldered. Become.

  Further, the specific shape of the carrier for locking and fixing the plurality of connection terminals is not limited to the shape of the above embodiment. For example, the grip pieces 46 and 46 are cut and raised from the metal plate forming the carrier 42. The pilot holes 52 may be formed at an arrangement pitch larger than the arrangement pitch of the gripping pieces 46 and 46 and the locking pieces 50.

10: Printed circuit board laminate, 12a, b: Printed circuit board, 14: Insulating separator, 16, 62: Connection terminal, 18a, b: Through hole, 22a, b: End, 24: Bent, 26: Locking protrusion Part, 40: connection terminal assembly, 42: carrier

Claims (4)

Two printed circuit boards laminated in parallel and spaced apart from each other with an insulating separator made of non-conductive synthetic resin are inserted into both through holes provided in both ends and soldered. Printed circuit board laminates connected to each other by a plurality of connection terminals,
The plurality of connection terminals are arranged in alignment along the alignment direction of the plurality of through holes, and a bent portion bent in the alignment direction is formed at an intermediate portion of each of the plurality of connection terminals. The printed circuit board laminate, wherein through-holes of the two printed circuit boards through which both ends of the plurality of connection terminals are inserted are shifted from each other in the alignment direction.   The printed circuit board laminate according to claim 1, wherein a locking projection for defining an insertion position of one printed circuit board into a through hole is provided at one end of each of the plurality of connection terminals.   The bent portions of the plurality of connection terminals are provided at the same position in the length direction of each terminal, and are inclined by 30 to 60 ° with respect to the extending direction of the end portions. The printed circuit board laminate according to 1. A connection terminal in which a plurality of connection terminals are locked and fixed in parallel with a predetermined interval in the length direction of the carrier with a central axis directed in the width direction of the carrier with respect to the band-shaped metal carrier In the connected body,
While the connection terminal according to any one of claims 1 to 3 is used as the connection terminal, a bent portion and one end of each connection terminal protrude from one side in the width direction of the carrier. And the other end of each connection terminal protrudes from the other side in the width direction of the carrier, and the bent portions of the plurality of connection terminals are arranged to bend in the length direction of the carrier. Thus, in each of the plurality of connection terminals, the one end and the other end are shifted from each other in the length direction of the carrier.

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