Electromagnetic compatibility anechoic chamber high-performance power supply filtering device

Abstract

The utility model provides an electromagnetic compatibility anechoic chamber high-performance power supply filtering device which comprises a rear installation plate, a positioning protrusion is integrally arranged at the front end of the rear installation plate, and a power supply filtering circuit board is placed at the front end of the rear installation plate. A filter shell is fixed to the front end of the rear mounting plate, a wire binding post is embedded in the upper portion of the filter shell, and a connecting isolation protective cover is mounted on the upper portion of the filter shell. The beneficial effects of the utility model are that through the arrangement of the rear insulation fixing plate, the middle connecting column, the circuit board positioning column, the threaded hole, the hexagonal rotating frame and the shell mounting cap, the connection of the rear mounting plate, the power supply filtering circuit board and the filter shell is facilitated, and the disassembly by a worker is facilitated; and the internal power supply filter circuit board is maintained.

Description

Technical Field

[0001] The utility model belongs to the technical field of power supply filtering, and in particular relates to a high-performance power supply filtering device for an electromagnetic compatibility anechoic chamber. Background Art

[0002] The filter is the most basic microwave electronic device, which is a filtering circuit composed of capacitors, inductors and resistors. The existing high-performance power supply filter includes a filter body and a connection end. The top and bottom of the left side of the front surface of the filter body and the top and bottom of the right side are fixedly connected to the surface of the connection end, and the two sides of the annular sleeve are respectively fixedly connected with a fixing box and a connection box. At present, it is difficult to disassemble the circuit components inside most power supply filters after they are damaged, resulting in a long maintenance time. In addition, the power supply filter is small in size, and the terminals are close to each other, so the terminals are easily affected by each other after power is turned on. Utility Model Content

[0003] In view of the above technical problems, the utility model provides an electromagnetic compatibility anechoic chamber high-performance power supply filtering device, wherein a convenient disassembly component is installed between the base, the circuit board and the shell, so that the staff can disassemble it conveniently. At the same time, the metal shell and the bottom plate can improve the heat dissipation effect, and cooperate with the isolation cover on the outside of the terminal to isolate the terminal so that they do not affect each other.

[0004] The technical solution is as follows: a high-performance power supply filter device for an electromagnetic compatibility anechoic chamber, comprising a rear mounting plate, the front end of the rear mounting plate being integrally provided with a positioning protrusion, a power supply filter circuit board being placed at the front end of the rear mounting plate, and characterized in that a detachable center fixture is installed at the center position of the front end, a filter housing is fixed at the front end of the rear mounting plate, a wire terminal is inlaid on the upper part of the filter housing, and a connection isolation protective cover is installed on the upper part of the filter housing.

[0005] Preferably, the detachable center fixer includes a rear insulating fixing plate, a middle connecting column is provided at the front end of the rear insulating fixing plate, a circuit board positioning column is integrated at the rear end of the middle connecting column, a threaded hole is opened at the inner center position of the middle connecting column, a hexagonal rotating frame is integrated at the outer front end of the middle connecting column, and the front end of the middle connecting column is connected to the outer shell mounting cap.

[0006] Preferably, the connection isolation protective cover includes an insulating protective shell, a rubber sealing sleeve is embedded in the upper part of the insulating protective shell, and mounting plates are integrated on the left and right sides of the interior of the insulating protective shell, a positioning slot is provided on the inner lower part of the mounting plate, and a hollow mounting frame is sleeved on the outer lower part of the mounting plate.

[0007] Preferably, the power filter circuit board is arranged on the inner side of the positioning protrusion, and the positioning protrusion is inserted into the inner rear end of the filter housing.

[0008] Preferably, a threaded connecting rod is integrally provided at the front center position of the rear insulating fixing plate, and the threaded connecting rod is threadedly connected to the inner rear end of the threaded hole.

[0009] Preferably, the middle connecting column is arranged at the front end of the power filter circuit board, and the circuit board positioning column passes through the inner side of the power filter circuit board.

[0010] Preferably, the inner side of the threaded hole extends backward to the rear surface of the circuit board positioning column, and the front end of the housing mounting cap is threadedly connected to the inner side of the threaded hole.

[0011] Preferably, the housing mounting cap is arranged at the front center of the filter housing, and the rear end of the housing mounting cap passes through the inner side of the filter housing.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. In the utility model, the arrangement of the rear insulating fixing plate, the middle connecting column, the circuit board positioning column, the threaded hole, the hexagonal rotating frame and the housing mounting cap is conducive to connecting the rear mounting plate, the power filter circuit board and the filter housing, and is convenient for the staff to disassemble and repair the internal power filter circuit board.

[0014] 2. In the present invention, the arrangement of the insulating protective shell, rubber sealing sleeve, mounting plug plate, positioning slot and hollow mounting frame is conducive to spacing the wire terminals arranged side by side so that adjacent wire terminals do not affect each other.

[0015] 3. In the present invention, the arrangement of the rear mounting plate, the positioning protrusion and the filter housing is conducive to utilizing the thermal conductivity of metal for heat dissipation, thereby improving the heat dissipation effect on the power filter circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model.

[0017] Figure 2 It is a schematic diagram of the internal structure of the utility model.

[0018] Figure 3 It is a structural schematic diagram of the conveniently detachable central fixer of the utility model.

[0019] Figure 4 It is a structural schematic diagram of a connection isolation protective cover of the utility model.

[0020] In the figure:

[0021] 1. Rear mounting plate; 2. Positioning protrusion; 3. Power filter circuit board; 4. Removable center fixture; 41. Rear insulating fixing plate; 42. Middle connecting column; 43. Circuit board positioning column; 44. Threaded hole; 45. Hexagonal rotating frame; 46. Housing mounting cap; 5. Filter housing; 6. Wire terminal; 7. Connection isolation protective cover; 71. Insulating protective shell; 72. Rubber sealing sleeve; 73. Mounting plug board; 74. Positioning slot; 75. Hollow mounting frame. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings:

[0023] Example:

[0024] As attached Figure 1 and attached Figure 2 As shown, a high-performance power supply filter device for an electromagnetic compatibility anechoic chamber includes a rear mounting plate 1, a positioning protrusion 2 is integrally provided at the front end of the rear mounting plate 1, a power supply filter circuit board 3 is placed at the front end of the rear mounting plate 1, and it is characterized in that a detachable center fixture 4 is installed at the center position of the front end, a filter housing 5 is fixed at the front end of the rear mounting plate 1, a wire terminal 6 is inlaid on the upper part of the filter housing 5, and a connection isolation protective cover 7 is installed on the upper part of the filter housing 5.

[0025] As attached Figure 3 As shown, in the above embodiment, specifically, the detachable center fixer 4 includes a rear insulating fixing plate 41, a middle connecting column 42 is provided at the front end of the rear insulating fixing plate 41, a circuit board positioning column 43 is integrated at the rear end of the middle connecting column 42, a threaded hole 44 is provided at the inner center position of the middle connecting column 42, a hexagonal rotating frame 45 is integrated at the outer front end of the middle connecting column 42, and a shell mounting cap 46 is connected to the front end of the middle connecting column 42.

[0026] As attached Figure 4 As shown, in the above embodiment, specifically, the connection isolation protective cover 7 includes an insulating protective shell 71, a rubber sealing sleeve 72 is embedded in the upper part of the insulating protective shell 71, and mounting plates 73 are respectively integrated on the left and right sides of the interior of the insulating protective shell 71, a positioning slot 74 is provided on the inner lower part of the mounting plate 73, and a hollow mounting frame 75 is sleeved on the outer lower part of the mounting plate 73.

[0027] In the above embodiment, specifically, the housing mounting cap 46 is disposed at the front center of the filter housing 5 , and the rear end of the housing mounting cap 46 penetrates the inner side of the filter housing 5 .

[0028] In the above embodiment, specifically, the rear insulating fixing plate 41 is embedded in the inner center of the rear mounting plate 1, and the rear insulating fixing plate 41, the middle connecting column 42 and the outer shell mounting cap 46 are respectively made of insulating materials.

[0029] In the above embodiment, specifically, the insulating protective shell 71 is arranged on the upper part of the filter housing 5 , and the filter housing 5 is located on the outer side of the wire terminal 6 .

[0030] In the above embodiment, specifically, an arc-shaped positioning protrusion is integrally provided on the inner side of the hollow installation frame 75 , and the arc-shaped positioning protrusion is clamped on the inner side of the positioning clamping groove 74 .

[0031] In the above embodiment, specifically, the hollow installation frame 75 is disposed between two adjacent wire terminals 6 , and the lower portion of the hollow installation frame 7 is fixed to the filter housing 5 .

[0032] In the above embodiment, specifically, the power filter circuit board 3 is a filter circuit board of model CW4L2-TS.

[0033] How it works

[0034] The working principle of the utility model is as follows: first, the wire is passed through the rubber sealing sleeve 72 and enters the inner side of the insulating protective shell 71, and then the wire is fixed to the wire terminal 6 at the appropriate position, and then the insulating protective shell 71 is moved downward until the mounting plug plate 73 is inserted into the inner side of the hollow mounting frame 75, and two adjacent wire terminals 6 are separated, and then the power supply circuit is filtered through the power supply filter circuit board 3. When replacing the electronic components on the power supply filter circuit board 3, first loosen the housing mounting cap 46, remove the filter housing 5 from the front end of the rear mounting plate 1, and then use the hexagonal rotating frame 45 to loosen the middle connecting column 42, and finally take out the power supply filter circuit board 3 for maintenance, which is convenient for the staff to disassemble.

[0035] Utilizing the technical solution described in the utility model, or those skilled in the art designing similar technical solutions inspired by the technical solution of the utility model to achieve the above-mentioned technical effects, all fall within the protection scope of the utility model.

Claims

1. A high-performance power filter device for an electromagnetic compatibility anechoic chamber, characterized in that: The electromagnetic compatibility anechoic chamber high-performance power filter device comprises a rear mounting plate (1), the front end of the rear mounting plate (1) is integrally provided with a positioning protrusion (2), a power filter circuit board (3) is placed at the front end of the rear mounting plate (1), a detachable center fixer (4) is installed at the center position of the front end, a filter housing (5) is fixed at the front end of the rear mounting plate (1), a wire terminal (6) is embedded on the upper part of the filter housing (5), and a connection isolation protective cover (7) is installed on the upper part of the filter housing (5).

2. The high-performance power supply filter device for an electromagnetic compatibility anechoic chamber according to claim 1, characterized in that: The detachable center fixer (4) comprises a rear insulating fixing plate (41), the front end of the rear insulating fixing plate (41) is provided with an intermediate connecting column (42), the rear end of the intermediate connecting column (42) is integrally provided with a circuit board positioning column (43), a threaded hole (44) is provided at the inner center position of the intermediate connecting column (42), the outer front end of the intermediate connecting column (42) is integrally provided with a hexagonal rotating frame (45), and the front end of the intermediate connecting column (42) is connected to a housing mounting cap (46).

3. The high-performance power filter device for electromagnetic compatibility anechoic chamber according to claim 1, characterized in that: The connection isolation protective cover (7) comprises an insulating protective shell (71), a rubber sealing sleeve (72) is embedded in the upper part of the insulating protective shell (71), and mounting plug plates (73) are integrally arranged on the left and right sides of the interior of the insulating protective shell (71), a positioning slot (74) is provided on the inner lower part of the mounting plug plate (73), and a hollow mounting frame (75) is sleeved on the outer lower part of the mounting plug plate (73).

4. The high-performance power supply filter device for an electromagnetic compatibility anechoic chamber according to claim 1, characterized in that: The power filter circuit board (3) is arranged on the inner side of the positioning protrusion (2), and the positioning protrusion (2) is inserted into the inner rear end of the filter housing (5).

5. The high-performance power filter device for electromagnetic compatibility anechoic chamber according to claim 2, characterized in that: A threaded connecting rod is integrally provided at the front center of the rear insulating fixing plate (41), and the threaded connecting rod is threadedly connected to the inner rear end of the threaded hole (44).

6. The high-performance power supply filter device for an electromagnetic compatibility anechoic chamber as claimed in claim 2, characterized in that: The intermediate connection column (42) is arranged at the front end of the power filter circuit board (3), and the circuit board positioning column (43) passes through the inner side of the power filter circuit board (3).

7. The high-performance power supply filter device for an electromagnetic compatibility anechoic chamber as claimed in claim 2, characterized in that: The inner side of the threaded hole (44) extends backward to the rear surface of the circuit board positioning column (43), and the front end of the housing mounting cap (46) is threadedly connected to the inner side of the threaded hole (44).

8. The high-performance power supply filter device for an electromagnetic compatibility anechoic chamber as claimed in claim 2, characterized in that: The housing mounting cap (46) is arranged at the front center of the filter housing (5), and the rear end of the housing mounting cap (46) penetrates the inner side of the filter housing (5).

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