Terminal installation structure of filter

Abstract

The utility model provides a terminal installation structure of a filter, which comprises a shell provided with a cavity for installing a coil, and a side plate of the shell is provided with an installation hole; and the terminal assembly comprises a first terminal plate, a second terminal plate, a rivet and a wiring terminal, the first terminal plate and the second terminal plate respectively abut against the inner wall and the outer wall of the side plate and are respectively provided with a first through hole and a second through hole which are arranged corresponding to the mounting holes, and the wiring terminal is provided with a third through hole which is arranged corresponding to the second through hole. During assembly, after the rivet sequentially penetrates through the first through hole, the second through hole and the third through hole, the first terminal plate, the second terminal plate and the wiring terminal are fixed on the side plate, so that the assembly is firmer, the rivet is provided with a fourth through hole through which the lead of the coil extends out of the shell, and the part, extending out of the shell, of the lead is fixed with the wiring terminal through welding; therefore, lead welding is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of filters, and particularly relates to a terminal installation structure of a filter. Background Art

[0002] A filter is a filter circuit composed of capacitors and inductors, which can effectively filter out interference signals on the power line and prevent the transmission of interference signals in a specific frequency range on the power line, thereby solving the electromagnetic compatibility problem.

[0003] The existing filters include a housing, a terminal assembly, a coil and a filtering element, etc. The terminal assembly includes a positive terminal, a negative terminal and a grounding terminal. The two ends of the coil are respectively connected to the positive terminal and the negative terminal correspondingly. Through holes for each terminal of the terminal assembly to extend out are formed on the housing, and the grounding terminal is fixed to the housing by welding. Since the terminal assembly is fixed to the housing only by the grounding terminal, the terminal assembly may become loose after long-term use, and then the connection between the terminal assembly and the coil becomes unstable, affecting the service life of the product. Summary of the Utility Model

[0004] Therefore, the technical problem to be solved by the utility model is to overcome the defect that the terminal assembly of the prior art is easy to be loose from the housing and affects the service life of the product, so as to provide a terminal installation structure of a filter with firm assembly and long service life.

[0005] To this end, the utility model provides a terminal installation structure of a filter, which includes a housing and a terminal assembly. The housing has a cavity for installing a coil, and mounting holes are provided on the side plate of the housing; the terminal assembly includes a first terminal plate, a second terminal plate, a rivet and a wiring terminal. The first terminal plate and the second terminal plate are respectively abutted against the inner wall and the outer wall of the side plate, and are respectively provided with a first through hole and a second through hole corresponding to the mounting hole. A third through hole corresponding to the second through hole is provided on the wiring terminal. After the rivet sequentially passes through the first through hole, the second through hole and the third through hole, the first terminal plate, the second terminal plate and the wiring terminal are fixed to the side plate. The rivet is formed with a fourth through hole for the lead of the coil to extend out of the housing.

[0006] One end of the rivet is provided with a first annular flange abutted against the first terminal plate, and the other end is formed with a second annular flange abutted against the wiring terminal by riveting.

[0007] The first terminal plate is formed with a mounting groove suitable for mounting the first annular flange.

[0008] The wiring terminal includes a mounting piece and a pin part bent and connected to the mounting piece, and the mounting piece is formed with the third through hole.

[0009] The part of the lead extending outside the housing is fixed to the terminal by welding.

[0010] The technical solution of the present utility model has the following advantages:

[0011] 1. For the terminal mounting structure of the filter provided by the present utility model, the terminal assembly includes a first terminal plate, a second terminal plate, a rivet and a terminal. The first terminal plate and the second terminal plate are respectively abutted against the inner wall and the outer wall of the side plate, and are respectively provided with a first through hole and a second through hole corresponding to the mounting hole. The terminal is provided with a third through hole corresponding to the second through hole. During assembly, the rivet passes through the first through hole, the second through hole and the third through hole in sequence, and then the first terminal plate, the second terminal plate and the terminal are fixed to the side plate. In this way, the assembly is more firm. The rivet is formed with a fourth through hole for the lead of the coil to extend out of the housing. The part of the lead extending outside the housing is fixed to the terminal by welding, which is more convenient for lead welding.

[0012] 2. For the terminal mounting structure of the filter provided by the present utility model, one end of the rivet is provided with a first annular flange abutting against the first terminal plate, and the other end is formed with a second annular flange abutting against the terminal by riveting. The first annular flange and the second annular flange can press and fix the terminal, the first terminal plate and the second terminal plate on the side plate. Further, the first terminal plate is formed with a mounting groove suitable for mounting the first annular flange, so that the internal space of the housing is less occupied. Description of the Drawings

[0013] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0014] Figure 1 It is a schematic structural diagram of the terminal mounting structure of the filter of the present utility model;

[0015] Figure 2 is Figure 1 an enlarged structural diagram of part A in

[0016] Explanation of the reference numerals in the drawings: 1, housing; 2, coil; 3, side plate; 4, mounting hole; 5, first terminal plate; 6, second terminal plate; 7, rivet; 8, terminal; 9, lead; 11, first through hole; 12, second through hole; 13, third through hole; 14, fourth through hole; 15, first annular flange; 16, second annular flange; 17, mounting groove; 18, mounting piece; 19, pin part. Detailed implementation manners

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0018] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0019] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0020] In addition, the technical features involved in different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0021] Embodiment

[0022] This embodiment provides a terminal installation structure for a filter, as Figure 1 shown, including a housing 1 and a terminal assembly.

[0023] The housing 1, as Figure 1 shown, has a cavity for installing a coil 2, and an installation hole 4 is provided on the side plate 3 of the housing 1.

[0024] The terminal assembly, as Figure 2As shown, it includes a first terminal board 5, a second terminal board 6, a rivet 7 and a terminal 8. The first terminal board 5 and the second terminal board 6 respectively abut against the inner wall and the outer wall of the side plate 3, and are respectively provided with a first through hole 11 and a second through hole 12 corresponding to the mounting hole 4. The terminal 8 is provided with a third through hole 13 corresponding to the second through hole 12. After the rivet 7 sequentially passes through the first through hole 11, the second through hole 12 and the third through hole 13, the first terminal board 5, the second terminal board 6 and the terminal 8 are fixed to the side plate 3. One end of the rivet 7 is provided with a first annular flange 15 abutting against the first terminal board 5, and the other end is formed with a second annular flange 16 abutting against the terminal 8 through riveting. The first terminal board 5 is formed with a mounting groove 17 suitable for mounting the first annular flange 15. The rivet 7 is formed with a fourth through hole 14 for the lead 9 of the coil 2 to extend out of the housing 1. The part of the lead 9 extending out of the housing 1 is fixed to the terminal 8 by welding. The terminal 8 includes a mounting piece 18 and a pin part 19 bent and connected to the mounting piece 18. The mounting piece 18 is formed with the third through hole 13.

[0025] For the terminal mounting structure of the filter provided by the present utility model, during assembly, after the rivet 7 sequentially passes through the first through hole 11, the second through hole 12 and the third through hole 13, the first terminal board 5, the second terminal board 6 and the terminal 8 are fixed to the side plate 3, so that the assembly is more firm. The rivet 7 is formed with a fourth through hole for the lead 9 of the coil 2 to extend out of the housing 1, and the part of the lead 9 extending out of the housing 1 is fixed to the terminal 8 by welding, which is more convenient for lead welding.

[0026] Obviously, the above embodiments are merely examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or variations derived therefrom are still within the protection scope of the present utility model.

Claims

1. A terminal mounting structure of a filter, characterized in that: include: A housing (1) having a cavity for mounting a coil (2), and a mounting hole (4) is provided on a side plate (3) of the housing (1); A terminal assembly comprises a first terminal plate (5), a second terminal plate (6), a rivet (7) and a connecting terminal (8); the first terminal plate (5) and the second terminal plate (6) are respectively abutted against the inner wall and the outer wall of the side plate (3), and are respectively provided with a first through hole (11) and a second through hole (12) arranged corresponding to the mounting hole (4); the connecting terminal (8) is provided with a third through hole (13) arranged corresponding to the second through hole (12); after the rivet (7) passes through the first through hole (11), the second through hole (12) and the third through hole (13) in sequence, the first terminal plate (5), the second terminal plate (6) and the connecting terminal (8) are fixed to the side plate (3); the rivet (7) is formed with a fourth through hole (14) for the lead wire (9) of the coil (2) to extend out of the shell (1).

2. The terminal mounting structure of the filter according to claim 1, characterized in that: One end of the rivet (7) is provided with a first annular flange (15) that abuts against the first terminal plate (5), and the other end is formed by riveting to form a second annular flange (16) that abuts against the connection terminal (8).

3. The terminal mounting structure of the filter according to claim 2, characterized in that: The first terminal plate (5) is formed with a mounting groove (17) suitable for mounting the first annular flange (15).

4. The terminal mounting structure of the filter according to claim 1, characterized in that: The connecting terminal (8) comprises a mounting piece (18) and a pin portion (19) bent and connected to the mounting piece (18); the mounting piece (18) is formed with the third through hole (13).

5. The terminal mounting structure of the filter according to claim 1, characterized in that: The portion of the lead wire (9) extending outside the housing (1) is fixed to the connection terminal (8) by welding.

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