A new type of high-current electrical test clamp

Abstract

This utility model proposes a novel high-current electrical test clamp, relating to the field of electrical testing equipment technology. It solves the problem that existing high-current test clamps, due to their thick jaws and limited opening angle, cannot clamp onto the copper plates of the L-shaped contact fingers, leading to easy detachment. This utility model includes a square first clamp and a second clamp. The first clamp has a square opening groove along its length that matches the second clamp. The first clamp is slidably disposed within the opening groove. A first locking block, spanning the opening groove, is provided on the upper surface of the first clamp at the opening end. A second locking block, symmetrical to the first locking block, is fixedly connected to the upper surface of the second clamp at the end away from the first clamp. A clamping opening is vertically provided at the end of the second clamp away from the second locking block. The beneficial effect of this utility model is that it can better and more conveniently clamp the L-shaped contact, preventing detachment.

Description

Technical Field

[0001] This utility model relates to the field of electrical testing equipment technology, specifically to a novel high-current electrical testing clamp. Background Technology

[0002] like Figure 7 As shown, the existing plum blossom contact 11 is composed of several spaced plum blossom fingers 12 encircling a circle. When using the existing high current test clamp 13 to perform contact resistance tests on vacuum circuit breakers with plum blossom contact 11, the contact area between the jaws of the test clamp 13 and the plum blossom fingers 12 is limited due to the thick jaws and the limited opening angle. As a result, the clamp cannot be clamped onto the copper sheet of the plum blossom fingers 12, and there is a possibility of it falling off during the test. Utility Model Content

[0003] The purpose of this invention is to solve the problem that existing high-current test clamps, due to their thick jaws and limited opening angle, cannot clamp onto the copper sheet of the plum blossom contact fingers and are prone to falling off.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A novel high-current electrical test clamp is characterized by comprising a square first clamp and a second clamp. The first clamp has a square opening groove along its length that matches the second clamp. The first clamp is slidably disposed within the opening groove. A first locking block is disposed on the upper surface of the first clamp near the opening of the opening groove, spanning the opening groove. A second locking block is fixedly connected to the upper surface of the second clamp away from the first clamp, symmetrical to the first locking block. A clamping opening is vertically provided at the end of the second clamp away from the second locking block.

[0006] A further improvement is that both the first and second calipers are made of copper.

[0007] A further improvement is that an elastic element is connected between the end face of the second caliper away from the second caliper block and the side face of the opening slide away from the first caliper block.

[0008] A further improvement is that the elastic element is a spring.

[0009] A further improvement is that the first caliper has guide grooves on its front and rear inner sidewalls along the length direction of the opening slide groove, and the second caliper has guide blocks on its front and rear outer sidewalls along the length direction, with the guide blocks slidably connected to the guide grooves.

[0010] A further improvement is that the guide block and the second caliper are integrally formed.

[0011] A further improvement is that the opposing surfaces of the first and second card blocks are symmetrically configured as an inner wedge-shaped bayonet.

[0012] A further improvement is that the clamping opening is either square or circular.

[0013] Compared with existing technologies, the above technical solution has the following advantages:

[0014] By clamping the second caliper's clamping opening with the test clamps and applying clamping force to the end of the first caliper furthest from the clamp block, electrical connection tests can be performed while clamping.

[0015] Alternatively, the clamping can be achieved by the rebound force of the elastic element. In this case, the test clamp is clamped at the end of the first clamp that is furthest from the clamping block for electrical connection testing.

[0016] The copper piece of the plum blossom-shaped contact finger is secured by the inner wedge-shaped latches of the two locking blocks to prevent it from coming off.

[0017] When used in conjunction with the existing test clamps, the plum blossom contact can be held better and more conveniently, preventing it from falling off. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a top view of the structure of this utility model;

[0021] Figure 3 This is a front structural diagram of the present invention;

[0022] Figure 4 This is a structural schematic diagram of Embodiment 2 of this utility model;

[0023] Figure 5 This is a structural schematic diagram of Embodiment 3 of this utility model;

[0024] Figure 6 This is a schematic diagram of the structure of this utility model in use;

[0025] Figure 7 This is a schematic diagram of the existing high-current test clamp and the strut contact clamp.

[0026] Explanation of reference numerals in the attached drawings: 1. First caliper; 2. Opening groove; 3. Guide groove; 4. First clamping block; 5. Second clamping block; 6. Guide block; 7. Clamping opening; 8. Elastic element; 9. Bay opening; 10. Lip-shaped contact; 11. Lip-shaped contact finger; 12. Detailed Implementation

[0027] Example 1, see Figures 1-3 , Figure 6 As shown, the technical solution adopted in this specific embodiment is a novel high-current electrical test clamp, characterized in that: it includes a square first clamp 1 and a second clamp 5. The first clamp 1 has a square opening groove 2 along its length that matches the second clamp 5. The first clamp 1 is slidably disposed in the opening groove 2. A first locking block 4 is provided on the upper surface of the first clamp 1 near the opening of the opening groove 2, which spans the opening groove 2. A second locking block 6, which is symmetrical to the first locking block 4, is fixedly connected to the upper surface of the second clamp 5 away from the first clamp 1. A clamping opening 8 is vertically provided on the end of the second clamp 5 away from the second locking block 6.

[0028] The first caliper 1 and the second caliper 5 are both copper calipers.

[0029] The first caliper 1 has guide grooves 3 on its front and rear inner sidewalls along the length direction of the opening slide groove 2, and the second caliper 5 has guide blocks 7 on its front and rear outer sidewalls along the length direction. The guide blocks 7 are slidably connected to the guide grooves 3.

[0030] The guide block 7 and the second caliper 5 are integrally formed.

[0031] The first card block 4 and the second card block 6 are symmetrically arranged with an inner wedge-shaped bayonet 10.

[0032] The clamping opening 8 is square.

[0033] Example 2, see Figure 4 As shown, the technical solution adopted in this specific embodiment is a new type of high-current electrical test clamp, characterized in that: an elastic element 9 is connected between the end face of the second clamp 5 away from the second clamping block 6 and the side face of the open slide groove 2 away from the first clamping block 4, and the rest of the structure is the same as in Embodiment 1.

[0034] The elastic element 9 is a spring.

[0035] Example 3, see Figure 5 As shown, the technical solution adopted in this specific embodiment is: a new type of high-current electrical test clamp, wherein the clamping opening 8 is circular, and the rest of the technical solutions are the same as in Embodiment 1.

[0036] The working principle of this utility model is as follows: In use, the second clamp 5 is inserted into the plum blossom contact 11, and the first clamp 1 moves towards the plum blossom contact 11. The first clamping block 4 on the first clamp 1 and the second clamping block 6 on the second clamp 5 clamp one of the plum blossom contact fingers 12 in the plum blossom contact 11. The copper sheet of the plum blossom contact finger 12 is secured by the inner wedge-shaped locking slots 10 of the two clamping blocks to prevent it from disengaging. The clamping force is applied by the test clamp to the clamping opening 8 of the second clamp 5 and the end of the first clamp 1 away from the clamping block. In this way, electrical connection tests can be performed at the same time as clamping. Alternatively, clamping can be performed by the rebound force of the elastic element 9. When clamping by the rebound force of the elastic element 9, the test clamp is clamped at the end of the first clamp 1 away from the clamping block to perform electrical connection tests. This can better clamp the plum blossom contact 11 and prevent it from falling off.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions provided are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents. Any aspects of this utility model not detailed herein are well-known to those skilled in the art.

Claims

1. A novel high-current electrical test clamp, characterized in that: The device includes a first caliper and a second caliper, both of which are square in shape. The first caliper has a square opening groove along its length that matches the second caliper. The first caliper is slidably disposed in the opening groove. A first locking block is provided on the upper surface of the first caliper near the opening of the opening groove, which spans the opening groove. A second locking block, symmetrical to the first locking block, is fixedly connected to the upper surface of the second caliper away from the first caliper. A clamping opening is vertically provided on the end of the second caliper away from the second locking block.

2. The novel high-current electrical test clamp according to claim 1, characterized in that: Both the first and second calipers are copper calipers.

3. The novel high-current electrical test clamp according to claim 1, characterized in that: An elastic element connects the end face of the second caliper away from the second caliper block to the side face of the open slide away from the first caliper block.

4. A novel high-current electrical test clamp according to claim 3, characterized in that: The elastic element is a spring.

5. A novel high-current electrical test clamp according to claim 1, characterized in that: The first caliper has guide grooves on its front and rear inner sidewalls along the length direction of its opening slide groove, and the second caliper has guide blocks on its front and rear outer sidewalls along the length direction of its opening groove. The guide blocks are slidably connected to the guide grooves.

6. A novel high-current electrical test clamp according to claim 5, characterized in that: The guide block and the second caliper are integrally formed.

7. A novel high-current electrical test clamp according to claim 1, characterized in that: The opposing surfaces of the first and second card blocks are symmetrically configured with an inner wedge-shaped bayonet.

8. A novel high-current electrical test clamp according to claim 1, characterized in that: The clamping opening is either square or round.

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