A wiring clamp for circuit maintenance and measurement

Abstract

This utility model discloses a wiring clamp for circuit maintenance and measurement, belonging to the field of wiring clamp technology. It includes: a lower clamp body with a rotating shaft rotatably mounted thereon, and an upper clamp body connected to the shaft; a torsion spring sleeved on the shaft, one end of which abuts against the lower clamp body, and the other end against the upper clamp body; both the lower and upper clamp bodies have recessed grooves, and multiple retractable and repositionable receiving plates are arranged within the recessed grooves; clamping blocks and limiting blocks are detachably mounted on the receiving plates, and rubber blocks are provided on the limiting blocks. This design effectively prevents damage to the wires by connecting the clamping blocks to the wires through contact. Simultaneously, the clamping blocks prevent damage to the wires caused by direct, rigid clamping contact. Furthermore, the staggered clamping blocks, the limiting pressure on the wires from the retracted receiving plates, and the contact between the rubber blocks on the limiting blocks and the wires greatly improve the clamping stability of the wires, effectively preventing slippage.

Description

Technical Field

[0001] This utility model relates to the field of wiring clamp technology, and more specifically, to a wiring clamp for circuit maintenance and measurement. Background Technology

[0002] Alligator clips, also known as test clips, spring clips, or snap clips, are common electrical connection tools primarily used for temporary circuit connections, testing electronic equipment, or holding wires. The tail of the clip has terminals for connecting wires, while the front metal part clamps conductive components, and a spring enables automatic opening and closing.

[0003] The secondary circuit of a current transformer refers to the low-voltage current circuit system that leads from the secondary winding of the current transformer and connects to measuring instruments (such as ammeters and energy meters), control devices, etc. When the ammeters, energy meters, control devices, etc. in the secondary circuit of the current transformer need to be replaced due to faults, the maintenance usually needs to be carried out without interrupting the power supply. Generally, the short-circuit method is used, that is, the current circuit is shorted with a jumper wire before disconnecting the wires and replacing the equipment. After confirming that the short-circuit is completed, the faulty equipment is then removed.

[0004] When short-circuiting current loops or disconnecting and replacing equipment, testing equipment is needed to check and measure the loop to determine if the short circuit is intact. Generally, the testing is performed by clamping the wire with the alligator clip at the measuring end of the testing equipment. However, most of the current clips have a serrated front end and are fixed in place. When clamping the connection, they can easily damage the wire and affect subsequent use. Non-serrated clips are not stable enough, and the wire and clip can easily slip off, resulting in poor performance.

[0005] Therefore, it is necessary to provide a wiring clamp for circuit maintenance and measurement to solve the above-mentioned technical problems. Utility Model Content

[0006] The purpose of this utility model is to provide a wiring clamp for circuit maintenance and measurement to solve the above-mentioned technical problems.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A wiring clamp for circuit maintenance and measurement, comprising: The lower clamping body has a rotating shaft on it, and the upper clamping body is connected to the rotating shaft; A torsion spring is sleeved on the rotating shaft, with one end abutting against the lower clamping body and the other end abutting against the upper clamping body; Both the lower clamp and the upper clamp are provided with recessed grooves, and multiple retractable and repositionable receiving plates are provided in the recessed grooves. Both the clamping block and the limiting block can be detachably mounted on the receiving plate. The limiting block is provided with a rubber block, and the clamping blocks on the lower clamping body and the upper clamping body are staggered.

[0008] Furthermore, the inner wall of the recessed groove is provided with a first elastic element, and the other end of the first elastic element is connected to the receiving plate.

[0009] Furthermore, the sidewall of the recessed groove is provided with a sliding groove, and the inner wall of the sliding groove is slidably connected to a slider connected to the receiving plate.

[0010] Furthermore, the receiving plate is provided with a first stud and a second stud, the bottom of the clamping block is provided with a first sleeve that is threadedly connected to the first stud, and the bottom of the limiting block is provided with a second sleeve that is threadedly connected to the second stud.

[0011] Furthermore, both the lower clamp and the upper clamp are rotatably connected to screws on their outer walls, and a stop is provided at one end of the screw that extends into the recessed groove.

[0012] Furthermore, the lower clamp is hinged to an outer sleeve rod at its end, and a telescopic connecting rod is provided inside the outer sleeve rod, with a hook at the end of the connecting rod; The upper clamp is provided with a hanging ring at one end that is compatible with the hook.

[0013] Furthermore, the outer sleeve rod has an internal telescopic groove that slides with the connecting rod, and a second elastic element is provided between the bottom wall of the telescopic groove and the inner end of the connecting rod.

[0014] Furthermore, a limiting groove is formed on the inner wall of the telescopic groove, and a limiting block connected to the connecting rod is slidably provided on the inner wall of the limiting groove.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: In this design, when the upper and lower clamps hold the wire, both the clamping blocks and limiting blocks of the upper and lower clamps are in contact with the wire. Unlike current connector clamps that use serrations to hold the wire, the clamping blocks provide better protection for the wire, effectively preventing damage. Simultaneously, when the clamping blocks hold the wire, they also experience a reaction force, causing the receiving plate to move and buffer, preventing damage to the wire caused by direct, rigid clamping contact. This further enhances wire protection, avoids the risk of wire leakage, and improves circuit measurement performance. Furthermore, the staggered clamping blocks, combined with the limiting pressure of the receiving plate in its retracted state, greatly improve the clamping stability of the wire, effectively preventing slippage and improving measurement quality. By limiting the contact between the rubber block on the limiting block and the wire, the wire can be flexibly limited, providing good protection. The rubber block can also increase the friction on the wire, thereby greatly reducing the possibility of the wire sliding or even coming off the upper and lower clamps, resulting in a good wire clamping effect. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the wiring clamp of this utility model; Figure 2 This is a structural schematic diagram of the wiring clamp of this utility model from another perspective; Figure 3 This is a partial structural diagram of the lower clamp of this utility model; Figure 4 This is a schematic diagram of the structure of the clamping block and rubber block of the lower clamping body of this utility model before installation; Figure 5 This is a partial cross-sectional view of the lower clamping body of this utility model; Figure 6 This is a partial structural diagram of the end of the connector clamp according to Embodiment 2 of this utility model; Figure 7 This is a schematic diagram of the internal structure of the outer sleeve rod of this utility model.

[0017] Explanation of the labels in the diagram: 1. Lower clamping body; 2. Upper clamping body; 3. Rotating shaft; 4. Torsion spring; 5. Inner groove; 6. Support plate; 7. Clamping block; 8. Rubber block; 9. First elastic element; 91. Spring; 92. Damper; 10. Slide groove; 11. Sliding block; 12. First stud; 13. Second stud; 14. First sleeve; 15. Second sleeve; 16. Screw; 17. Stop block; 18. Outer sleeve rod; 19. Connecting rod; 20. Hook; 21. Hanging ring; 22. Telescopic groove; 23. Second elastic element; 24. Limiting groove; 25. Limiting block. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Example 1: Please see Figure 1-5 A wiring clamp for circuit maintenance and measurement, comprising: The lower clamp 1 has a rotating shaft 3 on it, and the upper clamp 2 is connected to the rotating shaft 3. The upper clamp 2 and the lower clamp 1 are made of conductive metal and are interconnected. The pressing end of the upper clamp 2 and the holding end of the lower clamp 1 are made of insulating material or are equipped with an insulating sleeve. The tail of the lower clamp 1 is connected to the detection equipment through a wire. A torsion spring 4 is sleeved on the rotating shaft 3, with one end abutting against the lower clamping body 1 and the other end abutting against the upper clamping body 2. Both the lower clamping body 1 and the upper clamping body 2 are provided with recessed grooves 5, and multiple retractable and resetting receiving plates 6 are provided in the recessed grooves 5. Both the clamping block 7 and the limiting block can be detachably mounted on the receiving plate 6. The limiting block is equipped with a rubber block 8. The clamping blocks 7 on the lower clamping body 1 and the upper clamping body 2 are staggered.

[0020] Among them, the clamping block 7 and the receiving plate 6 are made of conductive material and are connected through the upper clamping body 2 and the lower clamping body 1.

[0021] When using this clamp to test and measure a short-circuited circuit, press the upper clamp 2 to make it rotate along the shaft 3. At this time, the torsion spring 4 will deform under force, and the distance between the upper clamp 2 and the lower clamp 1 will increase. Then, the wire will be placed between the upper clamp 2 and the lower clamp 1. After releasing the pressure on the upper clamp 2, the torsion spring 4 will reset and rotate the upper clamp 2. At this time, the upper clamp 2 and the lower clamp 1 will clamp the wire. The current signal will be converted into a measurable electrical signal through the principle of electromagnetic induction so that the testing equipment can perform the measurement.

[0022] When the wire is clamped by the upper clamp 2 and the lower clamp 1, the clamping blocks 7 and limiting blocks in the recessed grooves 5 of the upper clamp 2 and the lower clamp 1 are in contact with the wire. Through the conductive connection between the clamping blocks 7 and the wire, unlike current wiring clamps that use serrations to hold the wire, the clamping blocks 7 provide better protection for the wire, effectively preventing damage. Simultaneously, when clamping the wire, the clamping blocks 7 also experience a reaction force, causing the receiving plate 6 to contract and buffer within the recessed groove 5. This prevents damage to the wire caused by direct, rigid clamping contact, further enhancing wire protection, avoiding the risk of wire leakage, and improving circuit measurement performance. Furthermore, the staggered clamping blocks 7, combined with the limiting pressure of the receiving plate in its contracted state, greatly improve the clamping stability of the wire, effectively preventing slippage and better ensuring the effectiveness of circuit short-circuit measurements. Furthermore, by limiting the contact between the rubber block 8 on the limiting block and the wire, the rubber block 8 can flexibly limit the wire, providing good protection. In addition, the rubber block 8 can also increase the friction on the wire, thereby greatly reducing the possibility of the wire sliding or even coming off the upper clamp 2 and the lower clamp 1, resulting in a good clamping effect on the wire.

[0023] For preferred options, please refer to [link / reference]. Figure 2-5 The inner wall of the recessed groove 5 is provided with a first elastic element 9, and the other end of the first elastic element 9 is connected to the receiving plate 6.

[0024] Specifically, the first elastic element 9 includes a spring 91 and a damper 92. The spring 91 is sleeved on the outside of the damper 92. When the upper clamp 2 and the lower clamp 1 are clamping the wire, the clamping block 7 will be forced to move the receiving plate 6 toward the inside of the recess 5. At this time, the spring 91 is compressed and deformed, and the damper 92 contracts, which can buffer the clamping block 7 and the wire, avoid hard contact with the wire, and improve the protection of the wire. When the clamping is no longer used, the spring 91 and the damper 92 will move back to their original positions, that is, drive the receiving plate 6 and the clamping block 7 to move back to their original positions.

[0025] In this embodiment, preferably, please refer to 3-5, the side wall of the recessed groove 5 is provided with a sliding groove 10, and the inner wall of the sliding groove 10 is slidably connected to a slider 11 connected to the receiving plate 6.

[0026] Specifically, when the receiving plate 6 moves, it will drive the slider 11 to slide along the slide groove 10, thereby improving the moving stability of the receiving plate 6. Furthermore, the receiving plate 6 is electrically connected to the lower clamp 1 or the upper clamp 2 through the slider 11, and the up and down movement of the receiving plate 6 can always maintain a state of electrical connection.

[0027] In this embodiment, preferably, please refer to [reference needed]. Figure 3-5 The receiving plate 6 is provided with a first stud 12 and a second stud 13. The bottom of the clamping block 7 is provided with a first sleeve 14 that is threadedly connected to the first stud 12, and the bottom of the limiting block is provided with a second sleeve 15 that is threadedly connected to the second stud 13.

[0028] Specifically, the receiving plate 6 can be threadedly connected to the first stud 12 via the first sleeve 14, and the limiting block can be threadedly connected to the second stud 13 via the second sleeve 15. This allows the receiving plate 6 and the limiting block to be installed on the receiving plate 6, enabling the installation and removal of the receiving plate 6 and the limiting block. This facilitates subsequent maintenance and replacement, and allows the use of different receiving plates 6 and limiting blocks according to actual needs, providing high flexibility and adaptability.

[0029] In this embodiment, preferably, please refer to [reference needed]. Figure 1-2 and Figure 5 Both the lower clamp 1 and the upper clamp 2 are rotatably connected to screws 16 on their outer walls, and a stop block 17 is provided at one end of the screw 16 that extends into the recessed groove 5.

[0030] This design allows the stop block 17 to move when the screw 16 is rotated, thus adjusting the distance between the stop block 17 and the receiving plate 6. The height of the stop block 17 corresponds to different extreme retraction distances of the receiving plate 6. That is, when the receiving plate 6 retracts a certain distance, it will be stopped by the stop block 17, thereby preventing the stop block 17 from moving excessively and affecting the clamping effect on the wire. The adjustable position of the stop block 17 makes it suitable for use under different practical conditions, resulting in high practicality.

[0031] Example 2: Please see Figure 6-7 Based on Embodiment 1, the lower clamp 1 is hinged to an outer sleeve rod 18, and the outer sleeve rod 18 is provided with a telescopic connecting rod 19, and the end of the connecting rod 19 is provided with a hook 20. The end of the upper clamp 2 is provided with a hanging ring 21 that is adapted to the hook 20.

[0032] With this design, after the upper clamp 2 and lower clamp 1 clamp the wire, the outer sleeve rod 18 can be rotated to make the connecting rod 19 stand up. Then, the connecting rod 19 can be pulled outward along the inside of the outer sleeve rod 18 so that the hook 20 on the connecting rod 19 is hooked on the hanging ring 21. At this time, the upper clamp 2 and lower clamp 1 can be limited, which can further prevent the wire from coming off the upper clamp 2 and lower clamp 1, improve the clamping effect of the wire, and improve the quality of loop measurement.

[0033] In this embodiment, preferably, please refer to [reference needed]. Figure 6 The inner side of the outer rod 18 is provided with a telescopic groove 22 that is slidably connected to the connecting rod 19, and a second elastic element 23 is provided between the bottom wall of the telescopic groove 22 and the inner end of the connecting rod 19.

[0034] With this design, when the connecting rod 19 is pulled, the connecting rod 19 will slide along the telescopic groove 22 of the outer sleeve rod 18 and stretch the second elastic element 23. The second elastic element 23 in this application can be a spring. At this time, the second elastic element 23 is deformed by the tension, so the second elastic element 23 will have a pull force on the connecting rod 19 and the hook 20, thereby improving the connection effect between the hook 20 and the hanging ring 21.

[0035] When the connection between hook 20 and hanging ring 21 is released, the second elastic element 23 can drive the connecting rod 19 and hook 20 to spring back to their original position.

[0036] In this embodiment, preferably, please refer to [reference needed]. Figure 6 The inner wall of the telescopic groove 22 is provided with a limiting groove 24, and the inner wall of the limiting groove 24 is provided with a limiting block 25 connected to the connecting rod 19.

[0037] With this design, when the connecting rod 19 moves along the telescopic groove 22, it will cause the limiting block 25 to slide along the limiting groove 24. The limiting block 25 can limit the connecting rod 19 and prevent the connecting rod 19 from moving out of the telescopic groove 22.

[0038] It should be understood that the examples and embodiments described herein are for illustrative purposes only and are not intended to limit the present invention. Those skilled in the art can make various modifications or changes based on them. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0039] It should be noted that if the embodiments of this utility model involve directional indicators such as up, down, left, right, front, back, etc., the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture as shown in the attached figure. If the specific posture changes, the directional indicators will also change accordingly.

[0040] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, "multiple" refers to two or more. Moreover, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

Claims

1. A wiring clamp for circuit maintenance and measurement, characterized in that, include: The lower clamp (1) has a rotating shaft (3) on it, and the upper clamp (2) is connected to the rotating shaft (3). A torsion spring (4) is sleeved on the rotating shaft (3), with one end abutting against the lower clamp (1) and the other end abutting against the upper clamp (2); Both the lower clamp (1) and the upper clamp (2) are provided with recessed grooves (5), and multiple retractable and repositionable support plates (6) are provided in the recessed grooves (5). Both the clamping block (7) and the limiting block can be detachably mounted on the receiving plate (6). The limiting block is provided with a rubber block (8). The clamping blocks (7) on the lower clamping body (1) and the upper clamping body (2) are staggered.

2. The wiring clamp for circuit maintenance and measurement according to claim 1, characterized in that, The inner wall of the recessed groove (5) is provided with a first elastic element (9), and the other end of the first elastic element (9) is connected to the receiving plate (6).

3. The wiring clamp for circuit maintenance and measurement according to claim 1, characterized in that, The side wall of the recessed groove (5) is provided with a sliding groove (10), and the inner wall of the sliding groove (10) is slidably connected to a slider (11) connected to the receiving plate (6).

4. The wiring clamp for circuit maintenance and measurement according to claim 1, characterized in that, The receiving plate (6) is provided with a first stud (12) and a second stud (13). The bottom of the clamping block (7) is provided with a first sleeve (14) that is threadedly connected to the first stud (12). The bottom of the limiting block is provided with a second sleeve (15) that is threadedly connected to the second stud (13).

5. A wiring clamp for circuit maintenance and measurement according to claim 1, characterized in that, Both the lower clamp (1) and the upper clamp (2) are rotatably connected to screws (16), and a stop (17) is provided at one end of the screw (16) extending into the recessed groove (5).

6. A wiring clamp for circuit maintenance and measurement according to claim 1, characterized in that, The lower clamp (1) is hinged to an outer sleeve rod (18) at its end. The outer sleeve rod (18) is provided with a telescopic connecting rod (19), and the end of the connecting rod (19) is provided with a hook (20). The upper clamp (2) has a hanging ring (21) at its end that is adapted to the hook (20).

7. A wiring clamp for circuit maintenance measurement according to claim 6, characterized in that, The outer sleeve rod (18) has an internal telescopic groove (22) that is slidably connected to the connecting rod (19), and a second elastic element (23) is provided between the bottom wall of the telescopic groove (22) and the inner end of the connecting rod (19).

8. A wiring clamp for circuit maintenance and measurement according to claim 7, characterized in that, The inner wall of the telescopic groove (22) is provided with a limiting groove (24), and the inner wall of the limiting groove (24) is provided with a limiting block (25) connected to the connecting rod (19).

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