Shielding cover for filter

Abstract

The utility model relates to the technical field of filter shielding cases, and discloses a shielding case for a filter, which comprises a PCB (Printed Circuit Board); the filter is arranged on the PCB, and the filter is used for filtering out or enhancing specific frequency components; the shielding cover adopts a detachable design, the shielding cover is arranged on the PCB and covers the filter, and the shielding cover is used for preventing electromagnetic waves or radiation from generating interference on the surrounding environment; the shielding cover is arranged on the PCB, the cross screw is arranged on the shielding cover and is used for connecting and fixing the shielding cover which is detachably designed, the shielding cover comprises a lower shielding cover, the lower shielding cover is fixedly connected with the PCB, an upper shielding cover is arranged on the lower shielding cover, and the lower shielding cover is fixedly connected with the PCB. And the upper shielding case and the lower shielding case are in threaded connection through the cross screw. According to the utility model, a detachable design is adopted, so that daily maintenance of the filter is facilitated, and installation and protection of the filter are also facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of filter shielding covers, in particular to a shielding cover for filters. Background Art

[0002] A filter is an electronic device that separates, enhances or suppresses signals according to their frequency characteristics, and a shielding cover is a shell material used to shield electromagnetic waves or electromagnetic radiation. In order to prevent electromagnetic waves or radiation from interfering with the surrounding environment, or to prevent external electromagnetic waves or radiation from affecting the operation of the equipment, filters are usually protected by shielding covers.

[0003] At present, the metal shell structure of some shielding covers is simple and adopts an integrated fixed structure, which is not convenient for the installation, protection and use of the filter and is not convenient for daily filter maintenance. Therefore, we propose a shielding cover for the filter. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the shortcomings of the prior art, the utility model provides a shielding cover for a filter, which has the advantages of adopting a detachable design and facilitating daily maintenance of the filter. It solves the problem that the metal shell structure of some shielding covers is simple and adopts an integrated fixed structure, which is convenient for the installation, protection and use of the filter and inconvenient for daily filter maintenance.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned purpose of adopting a detachable design to facilitate daily maintenance of the filter, the utility model provides the following technical solutions: a shielding cover for a filter, comprising: a PCB board;

[0008] A filter, the filter being arranged on the PCB board, and the filter being used to filter out or enhance specific frequency components;

[0009] A shielding cover, wherein the shielding cover is detachable and is disposed on the PCB board and covers the filter, and is used to prevent electromagnetic waves or radiation from interfering with the surrounding environment;

[0010] A cross screw, which is arranged on the shielding cover and is used to connect and fix the shielding cover of detachable design. The shielding cover is fixed together by using the cross screw, and the shielding cover covers the filter, so as to facilitate the installation and protection of the filter;

[0011] When the filter needs to be inspected daily, the cross screw is screwed in the reverse direction until the cross screw is detached from the shielding cover, and then the shielding cover is partially removed, and the filter on the PCB board is inspected, so that the shielding cover can be removed easily and quickly, thereby facilitating daily inspection of the filter.

[0012] As a preferred technical solution of the utility model, the shielding cover includes a lower shielding cover, which is fixedly connected to the PCB board, and an upper shielding cover is provided on the lower shielding cover, and the upper shielding cover is threadedly connected to the lower shielding cover by the cross screw, so that the upper shielding cover and the lower shielding cover can be assembled and fixed together by the cross screw.

[0013] As a preferred technical solution of the utility model, an inner ring groove is provided on the inner cavity wall of the lower shielding cover, and the inner cavity of the inner ring groove is movably connected to the upper shielding cover to facilitate the assembly of the upper shielding cover.

[0014] As a preferred technical solution of the utility model, a lower outer edge is fixedly installed on the outer surface of the lower shielding cover, a lower annular groove is opened inside the top end of the lower outer edge, and the inner cavity of the lower annular groove is movably connected to the upper shielding cover to facilitate the assembly of the upper shielding cover onto the lower shielding cover.

[0015] As a preferred technical solution of the utility model, upper threaded holes are opened inside the lower outer edge, and the upper threaded holes are arranged in a circular array. The inner cavity of the upper threaded hole is threadedly connected to the cross screw to facilitate fixing the lower outer edge with the cross screw.

[0016] As a preferred technical solution of the utility model, an inner edge is fixedly installed on the inner cavity wall of the upper shielding cover, the outer end face of the inner edge contacts the inner cavity wall of the inner edge ring groove, and the bottom end face of the inner edge contacts the inner cavity bottom wall of the inner edge ring groove, so that the inner edge can be clamped on the inner cavity of the inner edge ring groove in a clamping manner.

[0017] As a preferred technical solution of the utility model, an upper outer edge is fixedly installed on the outer surface of the upper shielding cover, and an upper clamping ring is fixedly installed on the bottom end of the upper outer edge. The outer surface of the upper clamping ring is movably clamped with the inner cavity of the lower annular groove so that the upper clamping ring can be clamped in the lower annular groove in a clamping manner.

[0018] As a preferred technical solution of the utility model, lower threaded holes are opened inside the upper outer edge, and the lower threaded holes are arranged in a circular array. The inner cavity of the lower threaded hole is threadedly connected to the cross screw to facilitate fixing the upper outer edge with the cross screw.

[0019] (III) Beneficial effects

[0020] Compared with the prior art, the utility model provides a shielding cover for a filter, which has the following beneficial effects:

[0021] 1. The filter uses a shielding cover, through the reverse spiral cross screw, the cross screw is disengaged from the lower threaded hole cavity and the upper threaded hole cavity in turn, and then the upper shielding cover is pulled off from the lower shielding cover. At this time, the upper clamping ring is disengaged from the lower annular groove cavity, and the inner edge is disengaged from the inner edge ring groove cavity, until the upper shielding cover is disengaged from the lower shielding cover, and then the filter on the PCB board is inspected, so that the shielding cover can be disassembled conveniently, and the operation is simple and quick, which is convenient for daily inspection and maintenance of the filter.

[0022] 2. The filter shielding cover is assembled onto the lower shielding cover, wherein the outer end face of the inner edge contacts the inner cavity wall of the inner ring groove, the lower end face of the inner edge contacts the bottom wall of the inner cavity of the inner ring groove, and is clamped in the inner cavity of the inner ring groove in a clamping manner, and the upper clamping ring is clamped in the inner cavity of the lower annular groove, the upper outer edge contacts the lower outer edge, and the inner cavity of the upper threaded hole is in a vertical state, and then the upper shielding cover and the lower shielding cover are connected and fixed together by a cross screw, and the cross screw enters the inner cavity of the lower threaded hole through the upper threaded hole until the upper outer edge is fixed on the lower outer edge, thereby facilitating the installation of the shielding cover, and the operation is simple and quick, thereby facilitating the installation and protection of the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 This is a schematic diagram of the exploded structure of the shielding cover of the utility model;

[0025] Figure 3 For this utility model Figure 2 The enlarged schematic diagram at A in the middle;

[0026] Figure 4 It is a schematic diagram of the structure of the upper shielding cover of the utility model.

[0027] In the figure: 1, PCB board; 2, filter; 3, shielding cover; 31, lower shielding cover; 311, inner ring groove; 312, lower outer edge; 313, lower annular groove; 314, lower threaded hole; 32, upper shielding cover; 321, inner edge; 322, upper outer edge; 323, upper retaining ring; 324, upper threaded hole; 4, cross screw. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0029] Reference Figure 1-4 , a shielding cover for a filter is provided, comprising: a PCB board 1;

[0030] Filter 2, filter 2 is arranged on PCB board 1, and filter 2 is used to filter out or enhance specific frequency components;

[0031] The shielding cover 3 is detachable and is disposed on the PCB board 1 and covers the filter 2. The shielding cover 3 is used to prevent electromagnetic waves or radiation from interfering with the surrounding environment.

[0032] A cross screw 4 is disposed on the shielding cover 3 and is used to connect and fix the shielding cover 3 of detachable design.

[0033] The shielding cover 3 comprises a lower shielding cover 31 , which is fixedly connected to the PCB board 1 , an upper shielding cover 32 is arranged on the lower shielding cover 31 , and the upper shielding cover 32 is threadedly connected to the lower shielding cover 31 via a cross screw 4 .

[0034] An inner ring groove 311 is formed on the inner cavity wall of the lower shielding cover 31 , and the inner cavity of the inner ring groove 311 is movably connected to the upper shielding cover 32 .

[0035] A lower outer edge 312 is fixedly mounted on the outer surface of the lower shielding cover 31 . A lower annular groove 313 is formed inside the top end of the lower outer edge 312 . The inner cavity of the lower annular groove 313 is movably connected to the upper shielding cover 32 .

[0036] Upper threaded holes 324 are provided inside the lower outer edge 312 . The upper threaded holes 324 are arranged in a circular array. The inner cavities of the upper threaded holes 324 are threadedly connected to the cross screws 4 .

[0037] An inner edge 321 is fixedly mounted on the inner cavity wall of the upper shielding cover 32 , the outer end surface of the inner edge 321 contacts the inner cavity wall of the inner ring groove 311 , and the bottom end surface of the inner edge 321 contacts the inner cavity bottom wall of the inner ring groove 311 .

[0038] An upper outer edge 322 is fixedly mounted on the outer surface of the upper shielding cover 32 , and an upper clamping ring 323 is fixedly mounted on the bottom end of the upper outer edge 322 . The outer surface of the upper clamping ring 323 is movably clamped with the inner cavity of the lower annular groove 313 .

[0039] Upper threaded holes 324 are formed inside the upper outer edge 322 . The upper threaded holes 324 are arranged in a circular array. The inner cavities of the upper threaded holes 324 are threadedly connected to the cross screws 4 .

[0040] Working principle: by assembling the upper shielding cover 32 onto the lower shielding cover 31, at this time, the outer end face of the inner edge 321 contacts the inner cavity wall of the inner ring groove 311, the lower end face of the inner edge 321 contacts the bottom wall of the inner ring groove 311, and is clamped in the inner cavity of the inner ring groove 311 in a clamping manner, and at the same time, the upper clamping ring 323 is clamped in the inner cavity of the lower annular groove 313, the upper outer edge 322 contacts the lower outer edge 312, and the inner cavity of the lower threaded hole 314 and the inner cavity of the upper threaded hole 324 are in a vertical state, and then the upper shielding cover 32 and the lower shielding cover 31 are connected and fixed together by the cross screw 4, at this time, the cross screw 4 enters the inner cavity of the upper threaded hole 324 through the lower threaded hole 314 until the upper outer edge 322 is fixed on the lower outer edge 312, so as to facilitate the installation of the shielding cover 3, and the operation is simple and quick, so as to facilitate the installation and protection of the filter 2;

[0041] When it is necessary to perform daily maintenance on the filter 2, the cross screw 4 is screwed in the reverse direction. At this time, the cross screw 4 is disengaged from the inner cavity of the upper threaded hole 324 and the inner cavity of the lower threaded hole 314 in turn, and then the upper shielding cover 32 is pulled off from the lower shielding cover 31. At this time, the upper retaining ring 323 is disengaged from the inner cavity of the lower annular groove 313, and the inner edge 321 is disengaged from the inner cavity of the inner annular groove 311, until the upper shielding cover 32 is disengaged from the lower shielding cover 31, and then the filter 2 on the PCB board 1 is inspected, thereby facilitating the disassembly of the shielding cover 3, and the operation is simple and quick, thereby facilitating daily maintenance of the filter 2. The device adopts a detachable design, which is convenient for daily maintenance of the filter 2 and also convenient for installation and protection of the filter 2.

[0042] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A shielding cover for a filter, characterized in that: include: PCB board (1); A filter (2), wherein the filter (2) is arranged on the PCB board (1), and the filter (2) is used to filter out or enhance specific frequency components; A shielding cover (3), wherein the shielding cover (3) is of detachable design, the shielding cover (3) is arranged on the PCB board (1) and covers the filter (2), and the shielding cover (3) is used to prevent electromagnetic waves or radiation from interfering with the surrounding environment; A cross screw (4), the cross screw (4) being arranged on the shielding cover (3), and the cross screw (4) being used for connecting and fixing the shielding cover (3) of detachable design.

2. A filter shielding cover according to claim 1, characterized in that: The shielding cover (3) comprises a lower shielding cover (31), the lower shielding cover (31) is fixedly connected to the PCB board (1), an upper shielding cover (32) is provided on the lower shielding cover (31), and the upper shielding cover (32) is threadedly connected to the lower shielding cover (31) via the cross screw (4).

3. A filter shielding cover according to claim 2, characterized in that: An inner ring groove (311) is provided on the inner cavity wall of the lower shielding cover (31), and the inner cavity of the inner ring groove (311) is movably connected to the upper shielding cover (32).

4. A filter shielding cover according to claim 3, characterized in that: A lower outer edge (312) is fixedly mounted on the outer surface of the lower shielding cover (31), a lower annular groove (313) is provided inside the top end of the lower outer edge (312), and the inner cavity of the lower annular groove (313) is movably connected to the upper shielding cover (32).

5. A filter shielding cover according to claim 4, characterized in that: The lower outer edge (312) is provided with lower threaded holes (314) arranged in a circular array, and the inner cavity of the lower threaded hole (314) is threadedly connected to the cross screw (4).

6. A filter shielding cover according to claim 5, characterized in that: An inner edge (321) is fixedly mounted on the inner cavity wall of the upper shielding cover (32), the outer end surface of the inner edge (321) contacts the inner cavity wall of the inner edge annular groove (311), and the bottom end surface of the inner edge (321) contacts the inner cavity bottom wall of the inner edge annular groove (311).

7. A filter shielding cover according to claim 6, characterized in that: An upper outer edge (322) is fixedly mounted on the outer surface of the upper shielding cover (32), an upper clamping ring (323) is fixedly mounted on the bottom end of the upper outer edge (322), and the outer surface of the upper clamping ring (323) is movably clamped with the inner cavity of the lower annular groove (313).

8. The filter shielding cover according to claim 7, characterized in that: Upper threaded holes (324) are provided inside the upper outer edge (322), and the upper threaded holes (324) are arranged in a circular array. The inner cavity of the upper threaded hole (324) is threadedly connected to the cross screw (4).

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