Wire clamp for electrical test verification

Abstract

The utility model discloses a wire clamp used for electrical test verification, comprising a clamp body and a clamp head, the clamp body is sleeved with the clamp head, the clamp body is internally provided with a clamp body contact hole, the clamp head is internally provided with a clamp head contact hole, the bottom of the clamp head contact hole is communicated with an adjustable clamp mouth, the lower part of the clamp body is provided with an annular projection, and the annular projection is provided with an annular groove. And a connecting thread is arranged on the surface of the bulge and is in threaded connection with the movable female joint. The beneficial effects of the utility model are that through the close cooperation of the clamp body and the clamp head, and the design of the insulating sleeve, the adjustable clamp opening, the inclination angle thread knob, the hollow cylindrical clamp opening, the movable female joint, the anti-skid thread knob and the like, the contact area, the stability, the anti-falling performance and the application range are improved; the problems of poor contact, easy falling, potential safety hazards and the like of a traditional wire clamp are solved, and the test stability and the operation convenience are enhanced.

Description

Technical Field

[0001] This utility model belongs to the field of electrical equipment technology, and in particular relates to a wire clamp for electrical testing and verification. Background Technology

[0002] Because there are many types of objects that need to be tested and verified in electrical tests, the performance of the clamps used varies. First, if the clamp is not selected properly or the clamping height is too high, the clamping force may be insufficient and the clamp may fall off. Second, the use of general test clamps often results in contact with other metal parts, causing accidents such as open circuits and leakage, which may lead to personal injury and equipment damage. Third, most clamps do not have contact holes that match the test leads, and are connected by directly winding them around the contacts, which makes them prone to falling off and causes unstable transmission and overheating during the test.

[0003] The above-mentioned test clamps have problems such as insufficient clamping force, easy detachment, and poor insulation performance, which seriously affect the safety of on-site operations and reduce work efficiency. Therefore, a new type of clamp for electrical testing and verification is proposed. Summary of the Invention

[0004] To address the problems in the prior art, this utility model provides a wire clamp for electrical testing and verification, comprising a clamp body and a clamp head, which are sleeved together. The clamp body has a clamp body contact hole inside, and the clamp head has a clamp head contact hole inside. The bottom of the clamp head contact hole is connected to an adjustable clamping opening. The lower part of the clamp body has an annular protrusion, and a connecting thread is provided on the surface of the protrusion. The connecting thread is threadedly connected to a female connector.

[0005] In a preferred embodiment, the outer wall of the clamp is fitted with an insulating sleeve.

[0006] In a preferred embodiment, the chuck has a central cutout and an external thread on the bottom outer surface of the chuck, which is threaded to the fastening knob.

[0007] In a preferred embodiment, the height of the slit in the middle of the chuck is the height of the adjustable chuck, the height range of which is 2 / 3 to 4 / 5 of the chuck height, and the slit width range is 0.4 to 0.6 mm.

[0008] In a preferred embodiment, the outer diameter of the external thread of the collet gradually increases from the bottom to the top, forming a slope, with an overall slope range of 1-2°.

[0009] In a preferred embodiment, the fastening knob is a frustum structure, with the diameter of the upper base being larger than the inner diameter of the female connector, and the diameter of the lower base being smaller than the inner diameter of the female connector.

[0010] In a preferred embodiment, the outer surface of the fastening knob is provided with anti-slip texture.

[0011] In a preferred embodiment, the insulating sleeve is made of polyethylene.

[0012] In a preferred embodiment, the clamp, clamp body, and swivel connector are made of materials with good electrical conductivity, such as copper components, and the fastening knob is made of stainless steel.

[0013] The beneficial effects of this utility model are:

[0014] (1) The tight fit between the clamp body and the clamp of the device increases the contact area between the contact and the wire of the device under test and the stability of the contact;

[0015] (2) The insulating sleeve installed in this device solves the problems of short circuit and leakage that occur during the test;

[0016] (3) The adjustable clamp setting and the cut in the middle of the clamp of the device, by adjusting the fastening knob and the external thread of the clamp, the cut distance will become smaller during the tightening of the fastening knob, and the clamping force of the clamp will become greater and greater, which effectively solves the problem of the wire clamp being easy to fall off. This setting can also be adapted to wires or terminals of different sizes.

[0017] (4) The hollow columnar structure of the adjustable clamp in the device solves the problem of the small contact area between the wire clamp and the object being measured;

[0018] (5) The device connects the clamp body and the chuck through a live female connector, which increases the electrical contact area between the clamp body and the chuck and solves the problem of overheating due to the small contact area between the chuck and the clamp body;

[0019] (6) The fastening knob of the device is provided with anti-slip texture, which increases the friction when turning, and can be manually turned without the need for tools. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0021] Figure 2 This is a schematic diagram of the clamp and insulating sleeve in this utility model.

[0022] Figure 3 This is a schematic diagram of the clamp structure in this utility model.

[0023] In the diagram: 1. Insulating sleeve; 2. Clamp body; 3. Clamp body contact hole; 4. Clamp contact hole; 5. Clamp; 6. Clamp center cut; 7. Adjustable clamp; 8. Connecting thread; 9. Female connector; 10. Fastening knob; 11. Clamp external thread; 12. Anti-slip texture. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0025] Example

[0026] like Figure 1-3 The wire clamp shown includes a clamp body 2 and a clamp head 5, which are sleeved together. The clamp body 2 has a clamp body contact hole 3 inside, and the clamp head 5 has a clamp head contact hole 4 inside. The bottom of the clamp head contact hole 4 is connected to an adjustable clamping opening 7. The lower part of the clamp body 2 has an annular protrusion, and the surface of the protrusion has a connecting thread 8, which is threaded to a male female connector 9.

[0027] Furthermore, the outer wall of the clamp 2 is fitted with an insulating sleeve 1.

[0028] Furthermore, the chuck 5 has a central cutout 6, and an external thread 11 is provided on the bottom outer surface of the chuck 5. The external thread 11 is threadedly connected to the fastening knob 10.

[0029] Furthermore, the height of the slit 6 in the middle of the chuck is the height of the adjustable chuck 7, the height range of the adjustable chuck 7 is 4 / 5 of the height of the chuck 5, and the slit width range is 0.5mm.

[0030] Furthermore, the outer diameter of the external thread 11 of the chuck gradually increases from the bottom to the top, forming a slope with an overall slope of 1°.

[0031] Furthermore, the fastening knob 10 has a frustum structure, with the diameter of the upper base being larger than the inner diameter of the female connector 9 and the diameter of the lower base being smaller than the inner diameter of the female connector 9. This design allows the female connector 9 to be locked in the middle section of the fastening knob 10.

[0032] Furthermore, the outer surface of the fastening knob 10 is provided with anti-slip texture 12.

[0033] Furthermore, the insulating sleeve 1 is made of polyethylene.

[0034] Furthermore, the clamp 5, clamp body 2, and swivel connector 9 are made of copper, and the fastening knob 10 is made of stainless steel.

[0035] The process of using the above-mentioned device for testing electrical equipment is as follows: Place the insulating sleeve 1 over the outside of the clamp body 2, then insert the clamp 5 into the clamp contact hole 3 of the clamp body 2. Check if the clamp contact hole and the clamp contact hole 4 are aligned. Pass the test wire or terminal through the live female connector 9 and the tightening knob 10 in sequence, and finally insert it into the adjustable clamp 7. Tighten the tightening knob 10 after it is threaded into the external thread 11 of the clamp. During the tightening process, because the external thread 11 of the clamp is a frustum-shaped structure, the cut 6 in the middle of the clamp is squeezed, and the test wire or terminal will be clamped by the adjustable clamp 7. Tighten the live female connector 9 after it is threaded into the connecting thread 8. The connection between the clamp body 2 and the clamp 5 is completed. Finally, insert the test instrument contact into the clamp contact hole 3 to perform the relevant tests.

Claims

1. A wire clamp for electrical testing and verification, comprising a clamp body (2) and a clamp head (5), characterized in that, The clamp body (2) and the chuck (5) are connected together. The clamp body (2) has a clamp body contact hole (3) inside, and the chuck (5) has a chuck contact hole (4) inside. The bottom of the chuck contact hole (4) is connected to the adjustable clamping mouth (7). The lower part of the clamp body (2) has an annular protrusion, and the surface of the protrusion has a connecting thread (8). The connecting thread (8) is threadedly connected to the live female connector (9).

2. A wire clamp for electrical testing and verification according to claim 1, characterized in that, The outer wall of the clamp (2) is fitted with an insulating sleeve (1).

3. A wire clamp for electrical testing and verification according to claim 1, characterized in that, The chuck (5) has a chuck center cutout (6) and an external chuck thread (11) on the bottom outer surface of the chuck (5). The external chuck thread (11) is threadedly connected to the fastening knob (10).

4. A wire clamp for electrical testing and verification according to claim 3, characterized in that, The height of the cut (6) in the middle of the chuck is the same as the height of the adjustable chuck (7). The height range of the adjustable chuck (7) is 2 / 3 to 4 / 5 of the height of the chuck (5), and the width of the cut ranges from 0.4 to 0.6 mm.

5. A wire clamp for electrical testing and verification according to claim 3, characterized in that, The outer diameter of the external thread (11) of the chuck gradually increases from the bottom to the top, forming a slope, with an overall slope range of 1-2°.

6. A wire clamp for electrical testing and verification according to claim 3, characterized in that, The fastening knob (10) is a frustum structure, with the diameter of the upper base being larger than the inner diameter of the female connector (9) and the diameter of the lower base being smaller than the inner diameter of the female connector (9).

7. A wire clamp for electrical testing and verification according to claim 3, characterized in that, The outer surface of the fastening knob (10) is provided with anti-slip texture (12).

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