CN215834375U

CN215834375U - Radio frequency inductor device structure

Info

Publication number: CN215834375U
Application number: CN202121445900.9U
Authority: CN
Inventors: 钱江
Original assignee: Wuxi Fule Electronics Co ltd
Current assignee: Wuxi Fule Electronics Co ltd
Priority date: 2021-06-28
Filing date: 2021-06-28
Publication date: 2022-02-15
Anticipated expiration: 2031-06-28

Abstract

The utility model discloses a radio frequency inductor device structure which comprises a secondary winding, a primary winding, magnetic rings, copper pipes and mounting supports, wherein the two groups of mounting supports are arranged oppositely in parallel at intervals, the two copper pipes with parallel intervals are arranged between the two groups of mounting supports, the copper pipes are of pipe body structures with two through ends, the two ends of each copper pipe penetrate through the two mounting supports, the magnetic rings are coaxially sleeved on the outer rings of the two copper pipes respectively, and the secondary winding and the primary winding are wound and pass through inner holes of the two copper pipes. The radio frequency transformer is small in size, capable of passing large current, low in insertion loss and convenient to install.

Description

Radio frequency inductor device structure

Technical Field

The utility model belongs to the field of transformers, and particularly relates to a radio frequency inductor device structure.

Background

The application of the radio frequency transformer in rail transit is common and an indispensable component, and the radio frequency transformer mainly plays roles of impedance matching, direct current isolation, common mode suppression and the like in a low-power electronic circuit. Common technologies for constructing the radio frequency transformer include core wires, transmission lines, low-temperature co-fired ceramics and the like according to the requirements of actual use conditions.

The existing core wire type radio frequency transformer is generally manufactured by winding a wire material such as an enameled wire around a magnetic core (such as a ferrite bar) by using a high frequency switching power supply and the like. One or more secondary windings may be present or may be tapped in the center to achieve additional functionality. Smaller core transformers operate at higher frequencies than larger core transformers due to inductive coupling between the conductor and the core. However, the smaller size of the compact transformer increases the resistive losses of the windings and core, resulting in greater insertion losses at lower frequencies.

Due to the diversity and complexity of application occasions, the existing radio frequency transformer has more general types, most core-type winding structures are more complex, the types of materials are more, the production is difficult, the time and the labor are wasted, and the method specifically comprises the following steps:

1. the transformer usually adopts the same structure of a switch power supply transformer, and adopts various materials such as a retaining wall, an enameled wire, a magnetic core, an adhesive tape and the like.

2. In order to meet safety regulations, the product safety design is tedious, many factors such as safety distance need to be considered in the design stage, and the requirements are often met by methods such as skeleton customization and distance increase.

3. Due to the structural limitation, the size of the transformer is generally large, and particularly, when the current is large, the miniaturization and the light weight of the transformer are difficult.

4. The installation of transformer is mostly through skeleton stitch, lead out wire, modes such as installation base or support design alone, as the partly in order to satisfy customer's demand of transformer structure, has increased the cost like this, has reduced the competitiveness.

Disclosure of Invention

The purpose of the utility model is as follows: in order to overcome the defects in the prior art, the utility model provides a radio frequency inductor device structure, and provides a radio frequency transformer which is small in size, capable of passing large current, low in insertion loss and convenient to install.

The technical scheme is as follows: in order to achieve the purpose, the technical scheme of the utility model is as follows:

a radio frequency inductor device structure comprises a secondary winding, a primary winding, magnetic rings, copper pipes and mounting supports, wherein the two sets of mounting supports are arranged oppositely in parallel intervals, the two sets of copper pipes are arranged between the two sets of mounting supports in parallel intervals, the copper pipes are of pipe body structures with two communicated ends, the two ends of each copper pipe penetrate through the two mounting supports, the magnetic rings are coaxially sleeved on the outer rings of the two copper pipes respectively, and the secondary winding and the primary winding are wound around inner holes formed in the two copper pipes.

Furthermore, the mounting bracket comprises an integral bracket and a split bracket, the split bracket comprises a first bracket and a second bracket which are arranged at intervals in the length direction of the integral bracket, and the first bracket and the second bracket respectively correspond to and support one end of a copper pipe.

Furthermore, the primary winding comprises a primary lead, the secondary winding comprises a secondary lead, the primary lead and the secondary lead are both of lead structures coated with insulating layers, and the copper pipe comprises a first copper pipe and a second copper pipe.

Furthermore, the primary lead is wound in the counterclockwise direction in the sequence of sequentially passing through the integral support, the first copper pipe, the second support, the first support and the second copper pipe.

Further, the secondary winding comprises a secondary lead, the copper pipe comprises a first copper pipe and a second copper pipe, and the secondary lead is wound in an anticlockwise direction in sequence of sequentially penetrating through the first support, the second copper pipe, the integral support, the first copper pipe and the second support.

Further, the primary wire and the secondary wire are stranded wires.

The split type magnetic ring is characterized by further comprising an insulating plate, wherein the insulating plate is arranged between the split type support and the magnetic ring, and a through hole for the copper pipe to pass through is formed in the insulating plate in a penetrating mode.

Further, the surface of the mounting bracket is plated with tin.

Furthermore, both ends of the copper pipe comprise positioning steps, and the mounting bracket is provided with fixing holes corresponding to the positioning steps.

Has the advantages that: the utility model adopts a 'mouth' structure, and the magnetic rings are separated at two sides of the 'mouth', so that the magnetic circuit is completely concentrated in the magnetic rings, and the magnetic leakage is reduced. The copper pipe penetrates through the inner hole of the magnetic ring, the position of the magnetic ring is fixed, the consistency of a magnetic flux path is formed, the transformer structure is integrated, the size is small, large current can be passed, the insertion loss is low, and the installation is convenient.

Drawings

FIG. 1 is a perspective view of the overall structure of the present invention;

fig. 2 is an exploded view of the overall structure of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

As shown in fig. 1 and fig. 2, a radio frequency inductor device structure includes a secondary winding 1, a primary winding 2, a magnetic ring 3, copper tubes 4 and mounting brackets 6, two sets of the mounting brackets 6 are arranged oppositely in parallel, two copper tubes 4 are arranged between the two sets of the mounting brackets 6 in parallel, the copper tubes 4 are perpendicular to the mounting brackets 6, the copper tubes 4 are copper tube structures with two through ends, two ends of the copper tubes 4 are all arranged on the two mounting brackets 6 in a penetrating manner, the magnetic ring 3 is coaxially sleeved on the outer rings of the two copper tubes 4, the inner hole channels of the two copper tubes make the magnetic flux circuit of the magnetic ring be a 'mouth' structure, and the secondary winding 1 and the primary winding 2 are wound and pass through the inner holes of the two copper tubes 4. The utility model adopts a 'mouth' structure, and the magnetic rings are separated at two sides of the 'mouth', so that the magnetic circuit is completely concentrated in the magnetic rings, and the magnetic leakage is reduced. The copper pipe 4 passes through the inner hole of the magnetic ring, the position of the magnetic ring 3 is fixed, the consistency of a magnetic flux path is further formed, the transformer structure is integrated, the size is small, high current can be passed, the insertion loss is low, and the installation is convenient.

The parts of the transformer are connected through soldering tin, and all the components of the transformer form a whole, so that the strength of the whole transformer is improved, the problem of vibration faced when the transformer is used in rail transit is solved, and the product has strong vibration resistance. The support structure is adopted, and the mounting support is made of special alloy materials such as phosphor bronze and the like, so that sufficient strength is ensured. On the basis, the surface of the mounting bracket 6 is subjected to tin plating treatment, so that the convenience of mounting the transformer is improved, and the transformer is directly welded on a circuit board through the bracket.

Installing support 6 includes integral support 6a and split type support 6b, split type support 6b contains support one 7 and support two 8 that the interval set up on integral support 6a length direction, support one 7, support two 8 respectively correspond and support the one end of a copper pipe 4, utilize the support one 7, support two 8 of split type, appear ingeniously having avoided the short circuit ring, effectively prevent to appear phenomenon such as local overheat, loss are too big.

The primary winding 2 comprises a primary lead, the secondary winding comprises a secondary lead, the primary lead and the secondary lead are both of lead structures coated with insulating layers, the insulating leads are adopted as conductors, the outer insulating covers increase the secondary protection of conductor materials, the soft characteristic of the leads is fully utilized, and the convenience in installation is improved. The copper tube 4 includes a first copper tube 4a and a second copper tube 4 b.

The primary wire sequentially passes through the integral support 6a, the first copper pipe 4a, the second support 8, the first support 7 and the second copper pipe 4b and is wound by appropriate turns in the counterclockwise direction, and the primary winding of the embodiment comprises 3 turns. The secondary winding 1 comprises a secondary lead, the copper pipe 4 comprises a first copper pipe 4a and a second copper pipe 4b, the secondary lead is wound by proper turns in a counterclockwise direction in a sequence of sequentially passing through the first support 7, the second copper pipe 4b, the integral support 6a, the first copper pipe 4a and the second support 8, and the secondary winding comprises 2 turns in the embodiment.

The primary wire and the secondary wire are stranded wires, so that high-frequency loss can be reduced, the transformer can be used in an application scene with higher frequency, and the volume of the transformer is further reduced.

The insulating plate 5 is an epoxy plate, the insulating plate 5 is arranged between the split type support 6b and the magnetic ring 3, and a through hole for the copper pipe 4 to penetrate through is formed in the insulating plate 5.

The two ends of the copper pipe 4 comprise positioning steps 11, the mounting bracket 6 is provided with fixing holes 12 corresponding to the positioning steps 11, and the copper pipe is connected with the mounting bracket in a soldering mode.

The scheme avoids the characteristics of complex material selection, complex production process and the like of the traditional radio frequency transformer, and simultaneously brings the advantage of small volume. The installation size is adjusted conveniently, and the application occasion can be better adapted. The product utilizes the characteristic of high resistivity of the nickel-zinc magnetic material, has no external insulation external package, has good heat dissipation condition, can fully play the heat exchange of radiation, convection and the like, and has very low temperature rise under the working condition of large current. The strength of the structure can be well adapted to the environment with vibration influence.

The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the utility model and these are intended to be within the scope of the utility model.

Claims

1. A radio frequency inductor device structure, characterized by: including secondary winding (1), primary winding (2), magnetic ring (3), copper pipe (4) and installing support (6), two sets of installing support (6) parallel interval sets up relatively, and is two sets of be provided with two parallel interval's copper pipe (4) between installing support (6), copper pipe (4) are the body structure that both ends link up, the both ends of copper pipe (4) are all worn to establish on two installing support (6), two each coaxial cover in outer lane of copper pipe (4) is equipped with magnetic ring (3), secondary winding (1), primary winding (2) are all around establishing and through the hole of two copper pipes (4).

2. The structure of claim 1, wherein: the mounting support (6) comprises an integral support (6a) and a split support (6b), the split support (6b) comprises a first support (7) and a second support (8) which are arranged on the integral support (6a) in the length direction at intervals, and the first support (7) and the second support (8) respectively correspond to and support one end of one copper pipe (4).

3. A radio frequency inductive device structure as claimed in claim 2, wherein: the primary winding (2) comprises a primary lead, the secondary winding comprises a secondary lead, the primary lead and the secondary lead are both of lead structures coated with insulating layers, and the copper pipe (4) comprises a first copper pipe (4a) and a second copper pipe (4 b).

4. A radio frequency inductive device structure as claimed in claim 3, wherein: the primary lead is wound in the anticlockwise direction in the sequence of sequentially passing through the integral support (6a), the first copper pipe (4a), the second support (8), the first support (7) and the second copper pipe (4 b).

5. A radio frequency inductive device structure as claimed in claim 3, wherein: the secondary winding (1) comprises a secondary lead, the copper pipe (4) comprises a first copper pipe (4a) and a second copper pipe (4b), and the secondary lead is wound in an anticlockwise direction in sequence of sequentially passing through the first support (7), the second copper pipe (4b), the integral support (6a), the first copper pipe (4a) and the second support (8).

6. A radio frequency inductive device structure as claimed in claim 3, wherein: the primary wire and the secondary wire are stranded wires.

7. A radio frequency inductive device structure as claimed in claim 2, wherein: the magnetic ring is characterized by further comprising an insulating plate (5), wherein the insulating plate (5) is arranged between the split type support (6b) and the magnetic ring (3), and a through hole for the copper pipe (4) to penetrate through is formed in the insulating plate (5).

8. The structure of claim 1, wherein: and the surface of the mounting bracket (6) is plated with tin.

9. The structure of claim 1, wherein: both ends of the copper pipe (4) comprise positioning steps (11), and fixing holes (12) corresponding to the positioning steps (11) are formed in the mounting support (6).