Power line conduction emission test filter

Abstract

The utility model discloses a power line conduction emission test filter, comprising a housing, a plugging housing and an elastic sheet, the left and right side surfaces of the housing are respectively provided with a plugging head and a screw joint, the plugging housing is provided with a pin, the size of the pin is matched with that of the plugging head, and the interior of the plugging housing is rotatably connected with an auxiliary arm and a pressing head. The auxiliary arm and the pressing head are rotatably connected with a pressing handle, the elastic sheet is fixedly connected to the surface of the pressing head, the pressing head and the elastic sheet are controlled to move through the pressing handle, the electric wire is inserted into the plugging shell, the elastic sheet presses the electric wire to enable the electric wire to be in contact with the contact pin, and then the contact pin is inserted into the plugging head, so that the connection between the electric wire and the filter core can be realized. Wiring operation is simplified, the electric wire can be connected through plugging and pressing operation, the electric wire can be connected with a 4-mm banana socket through the screw joint, after the electric wire is connected with the 4-mm banana socket, wiring can be achieved in a plugging mode, and connection of the output electric wire is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of filters, in particular to a power line conducted emission test filter. Background Art

[0002] The power line conducted emission test filter is a special accessory for military standard test laboratories, anechoic chambers and other facilities, which can effectively suppress power line conducted interference.

[0003] Most existing filter terminals still use the traditional screw crimping method to connect the cable ends, which has a simple structure and low manufacturing cost. However, there are still some shortcomings. The screw locking method is easy to loosen and fall off, and the screw needs to be repeatedly turned with a screwdriver; when the wire is connected to the filter, a hole is usually punched in the shell, and the flexibility of the wire skin is used to achieve the connection between the shell and the wire, which has poor sealing. Utility Model Content

[0004] The utility model aims to provide a power line conducted emission test filter to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical solutions: a power line conducted emission test filter, comprising a housing, the housing is made of special stainless steel material, has high mechanical strength and strong corrosion resistance;

[0006] The left and right sides of the housing are respectively provided with a plug connector and a screw connector. A filter core is arranged inside the housing, and the plug connector and the screw connector are electrically connected to the filter core. The screw connector can be matched with a 4mm banana socket, and the wiring is convenient and fast.

[0007] A plug shell, the plug shell has a plug pin, and the size of the plug pin matches the plug connector, the plug shell is rotatably connected with an auxiliary arm and a clamping head, and the auxiliary arm and the clamping head are rotatably connected with a clamping handle;

[0008] An elastic sheet is fixedly connected to the surface of the clamping head and is located above the plug pin. The elastic sheet is used to clamp the wire to contact the plug pin. The wire is inserted into the connector shell. The clamping handle is used to control the elastic sheet to clamp the wire, thereby achieving quick connection of the wire and avoiding screwing to fix the wire. The operation is simple.

[0009] Furthermore, a first inspection cover and a second inspection cover are installed on the surface of the shell, and the first inspection cover and the second inspection cover are located on the left and right sides of the shell. The filter core can be inspected by opening the first inspection cover and the second inspection cover, simplifying the disassembly steps during inspection.

[0010] Furthermore, a hook rod is provided on the side of the plug shell, a hook block is provided on the side of the plug connector, and the hook rod is connected to the hook block. The hook rod can be used to prevent falling off, improve the stability of the connection between the plug shell and the plug connector, and prevent poor contact.

[0011] Furthermore, a clamping plate is provided on the lower surface of the elastic sheet, and the clamping plate is used to press the outer skin of the wire to prevent the wire from moving due to dragging, thereby ensuring good contact between the wire and the pin.

[0012] Furthermore, a stop strip is provided on the lower surface of the elastic sheet, and the stop strip can increase the sliding resistance of the wire and reduce the probability of poor contact.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] (1) The clamping handle controls the movement of the clamping head and the elastic sheet, inserts the wire into the plug shell, and the elastic sheet presses the wire so that the wire contacts the pin. Then the pin is inserted into the plug connector to connect the wire to the filter core, simplifying the wiring operation. The wire can be connected by plugging and pressing.

[0015] (2) The screw connector can be connected to a 4mm banana socket. When the wire is connected to the 4mm banana socket, it can be connected by plugging, which is more convenient for connecting output wires.

[0016] (3) The outer skin of the wire can be compressed by the compression plate, and the wire core can be compressed by the elastic sheet to achieve double reinforcement of the wire and improve the wire's anti-pulling ability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a top view of the utility model;

[0018] Figure 2 It is a schematic diagram of the connection between the housing and the filter core of the utility model;

[0019] Figure 3 It is a schematic diagram of the interior of the plug-in shell of the utility model;

[0020] Figure 4 It is a structural schematic diagram of the connection between the plug-in shell and the pressing handle of the utility model.

[0021] In the figure: 1. outer shell; 2. first inspection cover; 3. second inspection cover; 4. insulating cap; 5. screw joint; 6. filter element; 7. plug shell; 8. hook rod; 9. clamping handle; 10. plug connector; 11. hook block; 12. plug pin; 13. auxiliary arm; 14. clamping head; 15. elastic sheet; 16. stop strip; 17. clamping plate. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Example:

[0024] See also Figure 1-4 The utility model provides a technical solution: a power line conduction emission test filter, including a shell 1, the shell 1 is made of stainless steel, has good anti-rust effect and long service life, the left and right sides of the shell 1 are respectively installed with a plug connector 10 and a screw connector 5, the screw connector 5 can be used with a 4mm banana socket, a filter core 6 is arranged inside the shell 1, and the plug connector 10 and the screw connector 5 are electrically connected to the filter core 6;

[0025] The operating frequency of filter core 6 is 60Hz, the rated voltage is single-phase 250VAC / 600VDC or the rated voltage is three-phase 440 / 250VAC, the rated current is 10-20A, the leakage current is 0.2-2A at 250VAC / 50HZ, the insertion loss is ≥100dB, 9KHz-10GHz, the withstand voltage test is 1000VDC / 2S (line-line), 1000VDC / 2S (line-ground), the climate category is 25 / 070 / 21, and the voltage drop ΔV is less than 1V (rated working conditions);

[0026] A plug shell 7, wherein the plug shell 7 has a plug pin 12, and the size of the plug pin 12 matches the plug connector 10, and an auxiliary arm 13 and a clamping head 14 are rotatably connected inside the plug shell 7, and a clamping handle 9 is rotatably connected to the auxiliary arm 13 and the clamping head 14, and the clamping handle 9 is used to control the rotation of the clamping head 14, and the auxiliary arm 13 supports the clamping handle 9 and allows the clamping handle 9 to rotate;

[0027] The elastic sheet 15 is fixedly connected to the surface of the clamping head 14, and the elastic sheet 15 is located above the plug pin 12. The elastic sheet 15 is used to clamp the wire to contact the plug pin 12. When the wire is inserted into the plug shell 7, the clamping handle 9 is pressed to control the elastic sheet 15 to press the wire. The connection between the wire and the plug shell 7 can be achieved by simply inserting and pressing.

[0028] In this embodiment, if Figure 1 As shown, the first inspection cover 2 and the second inspection cover 3 are installed on the surface of the shell 1, and the first inspection cover 2 and the second inspection cover 3 are located on the left and right sides of the shell 1. The first inspection cover 2 and the second inspection cover 3 are fixed with screws, and the screws are threadedly connected to the shell 1.

[0029] In this embodiment, if Figure 1 As shown, an insulating cap 4 is screwed on the surface of the screw joint 5, and the insulating cap 4 can protect the screw joint 5 and prevent leakage problems.

[0030] In this embodiment, if Figure 2 As shown, a hook rod 8 is provided on the side of the plug shell 7, and a hook block 11 is provided on the side of the plug connector 10. The hook rod 8 is connected to the hook block 11, and the hook rod 8 is engaged with the hook block 11 to ensure that the plug shell 7 and the plug connector 10 are not easily separated after being plugged in. Pinching the hook rod 8 can control the hook rod 8 to separate from the hook block 11, and the plug shell 7 can be pulled off the plug connector 10.

[0031] In this embodiment, if Figure 3 As shown, a clamping plate 17 is provided on the lower surface of the elastic sheet 15. The clamping plate 17 is used to press the outer skin of the wire. The clamping plate 17 is made of rubber. The friction resistance between the rubber and the outer skin of the wire is large. When the wire is pulled, the wire is not easily separated from the pin 12.

[0032] In this embodiment, if Figure 3 As shown, a stop strip 16 is provided on the lower surface of the elastic sheet 15 , and the stop strip 16 can increase the force of the elastic sheet 15 clamping the wire core to ensure stable contact between the wire and the plug pin 12 .

[0033] Specifically, when in use, connect the wire to the 4mm banana socket, and then connect the 4mm banana socket to the screw connector 5 to achieve electrical connection between the wire and the filter core 6. When the wire is connected to the plug shell 7, pinch the hook rod 8 to make it tilt. When the hook rod 8 is separated from the hook block 11, pull the plug shell 7 off the plug connector 10, and then peel the wire, and insert the wire into the plug shell 7, and then press the clamping handle 9. The clamping handle 9 drives the clamping head 14 to rotate, and the clamping head 14 drives the elastic sheet 15 and the clamping plate 17 to move downward. The clamping plate 17 is pressed on the outer skin of the wire, and the elastic sheet 15 presses the wire core on the surface of the pin 12. Then the pin 12 is inserted into the plug connector 10 to achieve electrical connection between another wire and the filter core 6. The wiring operation no longer requires using a screwdriver to tighten the screw, and the operation is easier.

[0034] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A power line conducted emission test filter, characterized in that: include: A housing (1), wherein a plug connector (10) and a screw connector (5) are respectively installed on the left and right sides of the housing (1), a filter core (6) is arranged inside the housing (1), and the plug connector (10) and the screw connector (5) are electrically connected to the filter core (6); A plug-in shell (7), the plug-in shell (7) having a plug pin (12), the size of the plug pin (12) matching the plug connector (10), an auxiliary arm (13) and a clamping head (14) being rotatably connected inside the plug-in shell (7), and a clamping handle (9) being rotatably connected to the auxiliary arm (13) and the clamping head (14); An elastic sheet (15), wherein the elastic sheet (15) is fixedly connected to the surface of the pressing head (14), and the elastic sheet (15) is located above the plug pin (12), and the elastic sheet (15) is used to press the wire to contact the plug pin (12).

2. A power line conducted emission test filter according to claim 1, characterized in that: A first inspection cover (2) and a second inspection cover (3) are installed on the surface of the housing (1), and the first inspection cover (2) and the second inspection cover (3) are located on the left and right sides of the housing (1).

3. A power line conducted emission test filter according to claim 1, characterized in that: An insulating cap (4) is threadedly connected to the surface of the screw joint (5).

4. A power line conducted emission test filter according to claim 1, characterized in that: A hook rod (8) is provided on the side of the plug shell (7), a hook block (11) is provided on the side of the plug connector (10), and the hook rod (8) is connected to the hook block (11).

5. A power line conducted emission test filter according to claim 1, characterized in that: A pressing plate (17) is provided on the lower surface of the elastic sheet (15), and the pressing plate (17) is used to press the outer skin of the electric wire.

6. A power line conducted emission test filter according to claim 1, characterized in that: A stop strip (16) is provided on the lower surface of the elastic sheet (15).

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