CN219018782U

CN219018782U - Filter

Info

Publication number: CN219018782U
Application number: CN202223189124.8U
Authority: CN
Inventors: 陆永欢; 任华山; 全愉; 高煊慧; 凌树海; 张思易; 张小凯; 施荣华
Original assignee: Phoenix Contact Asia Pacific Nanjing Co Ltd
Current assignee: Phoenix Contact Asia Pacific Nanjing Co Ltd
Priority date: 2022-11-29
Filing date: 2022-11-29
Publication date: 2023-05-12
Anticipated expiration: 2032-11-29

Abstract

The utility model discloses a filter, and relates to the technical field of filters. The filter comprises a bottom plate, a filter body fixed on the bottom plate and a wiring terminal leading out the filter body, wherein the filter body comprises a circuit board, the circuit board is arranged at intervals with the bottom plate, and the wiring terminal is connected with one side, far away from the bottom plate, of the circuit board. The filter also comprises a protection seat, wherein the protection seat is arranged between the circuit board and the bottom plate and is used for supporting the circuit board and the wiring terminal. When the external circuit and the wiring terminal are connected through the screw, the acting force of screwing the screw is vertical to the circuit board, and the circuit board is supported by the protection seat, so that the pressure born by the circuit board is shared, and the function damage of the wiring terminal and the circuit board caused by fracturing the wiring terminal and the circuit board can be effectively avoided; and the virtual welding connection caused by the welding point fracturing of the wiring terminal improves the safety performance of the filter.

Description

Filter

Technical Field

The utility model relates to the technical field of filters, in particular to a filter.

Background

The filter is a filter circuit composed of a capacitor, an inductor and a resistor. The filter can effectively filter the frequency points of the specific frequency or the frequencies outside the frequency points in the power line to obtain a power signal of the specific frequency or eliminate the power signal of the specific frequency.

The filter is connected with an external circuit through a wiring terminal. At present, most of the wiring terminals at the two ends of the filter are bent by metal plates to cover, glue is poured or exposed. There is not supporting fixed knot in binding post department constructs, and binding post is fixed external circuit and binding post through the screw when connecting external circuit, and can have a decurrent effort to binding post when screwing, because binding post connects on the unsettled circuit board that sets up with the bottom plate, can lead to causing binding post and circuit board fracturing to cause binding post and circuit board's function impaired to and lead to the risk of cold joint connection with binding post's welding point fracturing, there is certain potential safety hazard.

Disclosure of Invention

The utility model aims to provide a filter, which can avoid the fracturing of a wiring terminal and a circuit board and the fracturing of a welding point of the wiring terminal; the safety performance is better.

To achieve the purpose, the utility model adopts the following technical scheme:

the filter comprises a bottom plate, a filter body and a wiring terminal, wherein the filter body is fixed on the bottom plate, the wiring terminal is led out of the filter body, the filter body comprises a circuit board, the circuit board is arranged at intervals with the bottom plate, and the wiring terminal is connected with one side, far away from the bottom plate, of the circuit board; the filter also comprises a protection seat, wherein the protection seat is arranged between the circuit board and the bottom plate and is used for supporting the circuit board and the wiring terminal.

As an alternative of the filter, the protection seat is clamped with the bottom plate.

As an alternative scheme of the filter, the protection seat comprises a seat body, a supporting cavity is arranged on the seat body, and the wiring terminal is arranged in the supporting cavity.

As an alternative of the filter, the protection seat further includes a connection part, the connection part is disposed below the support cavity, and the protection seat is connected with the bottom plate through the connection part.

As an alternative of the filter, the connecting component includes a first connecting member and a second connecting member, where the first connecting member is provided with two, two first connecting members are arranged at intervals, and two connecting positions of the first connecting member and the bottom plate are respectively a first connecting position and a second connecting position, the connecting position of the second connecting member and the bottom plate is a third connecting position, and the first connecting position, the second connecting position and the third connecting position are distributed in a triangle.

As an alternative scheme of the filter, the first connecting piece is a hook, and the bottom plate is provided with a clamping groove matched with the hook.

As an alternative scheme of the filter, the second connecting piece is a bump, and the bottom plate is provided with a round hole matched with the bump.

As an alternative of the filter, the circuit board is connected with the bottom plate through a connecting column, two ends of the base body are provided with accommodating cavities, one end, close to the bottom plate, of each accommodating cavity is provided with an opening, and the connecting column enters the accommodating cavities from the opening.

As an alternative of the filter, the two ends of the supporting cavity are provided with avoidance grooves, so that the circuit board enters the accommodating cavity through the avoidance grooves, and the supporting surface of the supporting cavity extends to the accommodating cavity.

As an alternative to the filter, the protective seat is an insulating member.

The utility model has the beneficial effects that:

according to the filter provided by the utility model, the protection seat is arranged between the circuit board and the bottom plate and is used for supporting the circuit board and the wiring terminal, when the external circuit and the wiring terminal are connected through the screw, the acting force for screwing the screw is perpendicular to the circuit board, and the circuit board is supported through the protection seat, so that the pressure born by the circuit board is shared, the function damage of the wiring terminal and the circuit board caused by fracturing the wiring terminal and the circuit board can be effectively avoided, meanwhile, the virtual welding connection caused by fracturing the welding point of the wiring terminal is avoided, and the safety performance of the filter is improved.

Drawings

Fig. 1 is a schematic structural diagram of a filter according to an embodiment of the present utility model;

FIG. 2 is a longitudinal cross-sectional view of a filter provided in an embodiment of the present utility model;

FIG. 3 is an exploded view of a filter provided in an embodiment of the present utility model;

fig. 4 is a cross-sectional view of a protection base mated with a circuit board and a connection terminal according to an embodiment of the present utility model;

FIG. 5 is a schematic structural view of a protection seat according to an embodiment of the present utility model;

fig. 6 is a schematic structural diagram of a base plate according to an embodiment of the present utility model.

In the figure:

1. a bottom plate; 2. a filter body; 3. a connection terminal; 4. a protection seat; 5. a connecting column; 6. a housing; 7. a connecting plate;

11. a round hole; 12. a clamping groove; 21. a circuit board; 22. a component; 31. a wire insertion groove; 32. a wire fixing hole; 41. a base; 42. a hook; 43. a bump;

411. an avoidance groove; 412. an opening; 413. a support surface; 414. and an avoidance port.

Detailed Description

In order to make the technical problems solved, the technical scheme adopted and the technical effects achieved by the utility model more clear, the technical scheme of the utility model is further described below by a specific embodiment in combination with the attached drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", and the like are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

As shown in fig. 1-3, the filter provided in this embodiment includes a base plate 1, a filter body 2 fixed on the base plate 1, and a connection terminal 3 for leading out the filter body 2, where the filter body 2 includes a circuit board 21, the circuit board 21 is disposed at intervals with the base plate 1, and the connection terminal 3 is connected to a side of the circuit board 21 away from the base plate 1.

The filter further comprises a shell 6, the filter body 2 further comprises a component 22, the component 22 is electrically connected with the circuit board 21, connecting plates 7 are arranged on two opposite sides of the bottom plate 1, the connecting plates 7 are fixedly connected with two side walls of the shell 6 through fasteners such as screws, so that the component 22 is sealed in a sealed space formed by the shell 6 and the bottom plate 1, and a shielding effect is achieved. The two ends of the circuit board 21 extend out of the housing 6 and are connected with the wiring terminals 3.

The housing 6 and the bottom plate 1 are both made of metal materials, or plastic is wrapped outside the metal parts, so that good EMC/EMI performance of the filter is ensured. Since there are a plurality of soldering points on the circuit board 21, there is a sufficient safety distance between the soldering points and the base plate 1 and the housing 6 to ensure a good shielding effect of the filter. Therefore, a set gap is usually reserved between the circuit board 21 and the base plate 1, so that the circuit board 21 is spaced apart from the base plate 1.

In this embodiment, the circuit board 21 and the base plate 1 are connected by the connecting posts 5, four connecting posts 5 are provided, and four connecting posts 5 are provided on the base plate 1, corresponding to the four corners of the circuit board 21. The circuit board 21 is fixed to the connection post 5 by a screw, and the connection post 5 is riveted to the base plate 1.

The wiring terminal 3 includes a wire insertion groove 31 and a wire fixing hole 32, the wire insertion groove 31 is provided at one end of the wiring terminal 3 away from the housing 6, the wire fixing hole 32 is provided at one end of the wiring terminal 3 away from the circuit board 21, and the wire fixing hole 32 is communicated with the wire insertion groove 31. When the filter is connected to the external circuit, the external circuit is inserted into the wire insertion groove 31, and then the screw is inserted into the wire fixing hole 32 to be tightened, so that the external circuit is fixed. The tightening force of the screw is perpendicular to the circuit board 21, and the circuit board 21 is suspended, so that the circuit board 21 and the wiring terminal 3 are easy to fracture, and the functions of the circuit board 21 and the wiring terminal 3 are damaged; or the welding point of the wiring terminal 3 is cracked to cause the cold joint connection, so that the potential safety hazard is caused.

In order to solve the above technical problem, the filter provided in this embodiment further includes a protection seat 4, where the protection seat 4 is disposed between the circuit board 21 and the bottom board 1, and is used for supporting the circuit board 21 and the connection terminal 3. When external circuit and binding post 3 are connected through the screw, the effort of screwing down the screw is perpendicular to circuit board 21, supports circuit board 21 through protection seat 4, shares the pressure that circuit board 21 bore, can effectively avoid fracturing binding post 3 and the function damage of circuit board 21 that binding post 3 and circuit board 21 lead to, avoids the virtual welding connection that the welding point fracturing of binding post 3 leads to simultaneously, has improved the security performance of filter.

The protection seat 4 is provided with two, and two protection seats 4 and two binding post 3 one-to-one set up for two binding post 3 can both be supported.

The protection seat 4 is an insulating part, and the protection seat 4 is arranged as an insulating part to play an insulating role. The protection seat 4 can be made of engineering plastics or plastic materials.

As an alternative to the filter, the protective base 4 is snapped with the chassis 1. When installing protection seat 4, only need push protection seat 4 between bottom plate 1 and the circuit board 21, can be with protection seat 4 and bottom plate 1 joint, it is convenient to install, can realize the quick installation of protection seat 4.

As an alternative to the filter, as shown in fig. 4 to 6, the protection seat 4 includes a seat body 41, a supporting cavity is provided on the seat body 41, and the connection terminal 3 is provided in the supporting cavity. Through setting up binding post 3 in the support intracavity, the holding surface 413 in support chamber supports circuit board 21 and binding post 3 for share the tightening force of screw, the pedestal 41 encloses the circumference of locating binding post 3 and circuit board 21, has increased the aesthetic property.

As an alternative to the filter, the protective seat 4 further comprises a connecting member, which is provided below the support cavity, through which the protective seat 4 is connected to the bottom plate 1. Specifically, the connecting component comprises a first connecting piece and a second connecting piece, wherein two first connecting pieces are arranged at intervals, the connecting positions of the two first connecting pieces and the bottom plate 1 are respectively a first connecting position and a second connecting position, the connecting positions of the second connecting pieces and the bottom plate 1 are third connecting positions, and the first connecting positions, the second connecting positions and the third connecting positions are distributed in a triangular mode. The connection positions of the connecting parts and the bottom plate 1 are distributed in a triangle shape, so that the stability is better.

Optionally, the first connecting piece is a hook 42, and the bottom plate 1 is provided with a slot 12 matched with the hook 42. The two hooks 42 are arranged in parallel at intervals, and the hooks 42 extend from one end of the bottom of the seat 41 away from the shell 6 to one end close to the shell 6, and the hooking ends of the hooks 42 are arranged towards the bottom plate 1 and are clamped with the clamping grooves 12 on the bottom plate 1.

Optionally, the second connecting piece is a bump 43, and the bottom plate 1 is provided with a round hole 11 matched with the bump 43. The protruding points 43 are disposed between the two hooks 42, so that the hooking ends of the two hooks 42 and the protruding points 43 are distributed in a triangle shape.

Of course, in other embodiments, the first connector and the second connector may have other structures, such as: the first connecting piece is arranged as a clamping block, and the second connecting piece is arranged as a clamping column and other structures.

Since the circuit board 21 and the bottom plate 1 are connected through the connecting post 5, for increasing the aesthetic property, the base 41 encloses the wiring terminal 3 and the circuit board 21, both ends of the base 41 are provided with accommodating cavities, one end of the accommodating cavity close to the bottom plate 1 is provided with an opening 412, and the connecting post 5 enters the accommodating cavities from the opening 412 to wrap the connecting post 5.

In order to avoid the screws connecting the circuit board 21 and the connection post 5, the length of the connection terminal 3 is smaller than the width of the circuit board 21. Therefore, the circuit boards 21 on both sides in the longitudinal direction of the terminal 3 need to enter the accommodating chamber. Optionally, both ends of the supporting cavity are provided with avoidance slots 411, so that the circuit board 21 enters the accommodating cavity through the avoidance slots 411, and the supporting surface 413 of the supporting cavity extends to the accommodating cavity. Extending the support surface 413 of the support cavity to the receiving cavity can better share the force of the circuit board 21.

The support surface 413 in the accommodating chamber is further provided with an escape opening 414, and the escape opening 414 communicates with one end of the support surface 413 close to the housing 6, so that the connection post 5 can enter the accommodating chamber through the opening 412 and the escape opening 414.

When the protection seat 4 is installed, the supporting cavity is aligned with the wiring terminal 3, the seat body 41 is inserted between the bottom plate 1 and the circuit board 21, the circuit boards 21 on two sides of the wiring terminal 3 enter the accommodating cavity through the avoidance slots 411, the connecting column 5 enters the accommodating cavity through the openings 412 and the avoidance openings 414, the hooking ends of the two hooks 42 are matched with the clamping grooves 12, meanwhile, the protruding points 43 enter the round holes 11, and the protection seat 4 and the bottom plate 1 are stably connected.

The foregoing is merely exemplary of the present utility model, and those skilled in the art should not be considered as limiting the utility model, since modifications may be made in the specific embodiments and application scope of the utility model in light of the teachings of the present utility model.

Claims

1. The filter comprises a bottom plate (1), a filter body (2) fixed on the bottom plate (1) and a wiring terminal (3) for leading out the filter body (2), wherein the filter body (2) comprises a circuit board (21), the circuit board (21) is arranged at intervals with the bottom plate (1), and the wiring terminal (3) is connected with one side, far away from the bottom plate (1), of the circuit board (21); the filter is characterized by further comprising a protection seat (4), wherein the protection seat (4) is arranged between the circuit board (21) and the bottom plate (1) and is used for supporting the circuit board (21) and the wiring terminal (3).

2. The filter according to claim 1, characterized in that the protection seat (4) is clamped with the bottom plate (1).

3. The filter according to claim 1 or 2, characterized in that the protection seat (4) comprises a seat body (41), a supporting cavity is arranged on the seat body (41), and the connecting terminal (3) is arranged in the supporting cavity.

4. A filter according to claim 3, characterized in that the protective seat (4) further comprises a connecting member provided below the support cavity, the protective seat (4) being connected to the base plate (1) by means of the connecting member.

5. The filter according to claim 4, wherein the connecting parts comprise a first connecting piece and a second connecting piece, the first connecting piece is provided with two first connecting pieces, the two first connecting pieces are arranged at intervals, the connecting positions of the two first connecting pieces and the bottom plate (1) are respectively a first connecting position and a second connecting position, the connecting position of the second connecting piece and the bottom plate (1) is a third connecting position, and the first connecting position, the second connecting position and the third connecting position are distributed in a triangle shape.

6. The filter according to claim 5, wherein the first connecting member is a hook (42), and the base plate (1) is provided with a slot (12) that mates with the hook (42).

7. The filter according to claim 6, characterized in that the second connection element is a bump (43), and the base plate (1) is provided with a circular hole (11) cooperating with the bump (43).

8. A filter according to claim 3, characterized in that the circuit board (21) and the chassis (1) are connected by means of a connecting post (5), both ends of the housing (41) are provided with receiving cavities, one end of the receiving cavities close to the chassis (1) is provided with an opening (412), and the connecting post (5) enters the receiving cavities from the opening (412).

9. The filter according to claim 8, characterized in that both ends of the supporting cavity are provided with relief slots (411) so that the circuit board (21) enters the receiving cavity through the relief slots (411), and the supporting surface (413) of the supporting cavity extends to the receiving cavity.

10. The filter according to claim 1, characterized in that the protective seat (4) is an insulating member.