Insulating wrench for electrical work

By introducing an adjustment mechanism and a protection and limit mechanism into the insulated wrench, the limitation of fixed wrench length is solved, enabling flexible disassembly of bolts in different positions and ensuring safety during high-altitude operations.

CN224347757UActive Publication Date: 2026-06-12STATE GRID CORP OF CHINA DC CONSTR BRANCH +1

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
STATE GRID CORP OF CHINA DC CONSTR BRANCH
Filing Date
2025-04-21
Publication Date
2026-06-12

AI Technical Summary

Technical Problem

Existing insulated wrenches have a fixed length and cannot be adjusted according to the bolt position, which limits their use.

Method used

An adjustment mechanism is designed to adjust the distance between the wrench body and the extension plate via a plug rod and a support plate. It is also equipped with electrical insulation protection and a limit mechanism, including a protective sleeve and a limit ring, to ensure safety.

Benefits of technology

It enables flexible disassembly of bolts in different positions, improving practicality, and enhances safety by preventing the wrench from falling during high-altitude operations through insulation protection and limit switches.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses an insulating wrench for electrical construction, and particularly relates to the technical field of insulating wrenches, which comprises a wrench body, an extension plate arranged at the bottom of the wrench body, an adjusting mechanism arranged at the bottom of the wrench body and used for adjusting the extension plate, a support plate arranged at the top end of the extension plate, a plug-in groove arranged at the bottom end of the wrench body, a plug-in rod arranged in the wrench body, the front end of the plug-in rod penetrating through the wrench body and extending out of the front side of the wrench body, a plurality of plug-in holes arranged on the support plate, and a protection mechanism arranged on the outside of the extension plate and used for electric power insulation protection. The adjusting mechanism can adjust the distance between the wrench body and the extension plate, so as to facilitate the disassembly of bolts at different positions and improve the practicability of the utility model. In addition, the wrench body can be limited by the limiting mechanism, so as to prevent the wrench body from falling during aerial work and improve the safety.
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Description

Technical Field

[0001] This utility model relates to the field of insulating wrench technology, specifically to an insulating wrench for electrical construction. Background Technology

[0002] Insulating wrenches have good insulation performance, effectively ensuring the safety of electricians when working with live wires. They are commonly used in the inspection and maintenance of electrical equipment and can be operated in confined spaces. As shown in Chinese patent application number 202121353769.3, the technical solution includes a wrench body and detection parts disposed at both ends of the wrench body. The wrench body is provided with a detection component for detecting whether the object to be tested is energized. The detection component is located on the side of the wrench body closer to the detection part. When the induction coil of this technical solution detects the presence of a magnetic field around the object to be tested, an induced current is generated in the induction coil. If the light-emitting diode emits light after the induced current is transformed and rectified, it indicates that the object to be tested is energized, making it convenient for users to detect whether the object to be tested is energized.

[0003] However, the following problems still exist in this technical solution: the length of the wrench is fixed and cannot be adjusted according to the position of the bolt, which limits its use. Utility Model Content

[0004] The purpose of this utility model is to provide an insulated wrench for electrical construction. The distance between the wrench body and the extension plate can be adjusted through an adjustment mechanism to facilitate the disassembly of bolts in different positions, thereby improving the practicality of this utility model. Furthermore, the wrench body can be limited by a limiting mechanism to prevent it from falling during high-altitude operations, thus improving safety and addressing the aforementioned shortcomings in the technology.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an insulating wrench for electrical construction, comprising a wrench body, an extension plate at the bottom of the wrench body, and an adjustment mechanism for adjusting the extension plate at the bottom of the wrench body.

[0006] Preferably, the adjustment mechanism includes a support plate disposed at the top of the extension plate, a insertion groove is provided at the bottom of the inside of the wrench body, an insertion rod is provided inside the wrench body, the front end of the insertion rod passes through the wrench body and extends out of the front side of the wrench body, a plurality of insertion holes are provided on the support plate, the insertion rod is adapted to the insertion holes, and the support plate is adapted to the insertion groove, for adjusting the extension plate.

[0007] Preferably, a connecting plate is fixedly provided on the front side of the plug rod, and two springs are fixedly provided on the rear side of the connecting plate. The end of the spring away from the connecting plate is fixedly connected to the wrench body to drive the plug rod to move.

[0008] Preferably, the extension plate is provided with a protective mechanism for electrical insulation protection. The protective mechanism includes a protective sleeve fitted on one side of the extension plate. The protective sleeve is made of rubber and has a first threaded hole. The extension plate has a second threaded hole. The first threaded hole and the second threaded hole are connected internally by the same first bolt for electrical insulation protection.

[0009] Preferably, the bottom of the protective sleeve is provided with a limiting mechanism to facilitate the limiting of the wrench body. The limiting mechanism includes a third threaded hole opened at the bottom of the protective sleeve, a fourth threaded hole opened on the extension plate, a second bolt internally threaded to the fourth threaded hole and the third threaded hole, a limiting ring passing through the outside of the second bolt, a connecting rope fixed at the bottom of the limiting ring, and a tensioning ring fixed at the bottom of the connecting rope for limiting the wrench body.

[0010] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0011] 1. Pull the connecting plate to pull the spring out of the insertion hole, and then pull the extension plate to drive the support plate to slide inside the insertion slot. Adjust the distance between the wrench body and the extension plate according to the position of the bolt to facilitate the disassembly of bolts in different positions and improve the practicality of this utility model.

[0012] 2. Place the protective sleeve over the extension plate, then rotate the first bolt until it is inside the first and second threaded holes. The first bolt will fix the protective sleeve to the outside of the extension plate. The protective sleeve is made of rubber, which has good electrical insulation properties. By setting up the protective sleeve, electric shock can be avoided for workers, thus improving safety.

[0013] 3. First, put the limit ring on the outside of the second bolt, then rotate the second bolt until it is inside the third and fourth threaded holes. The worker puts the tension ring on his wrist to prevent the wrench from falling when working at height, thus improving safety. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0015] Figure 1 This is a front view of the present invention;

[0016] Figure 2This is a schematic diagram of the structure of this utility model in use;

[0017] Figure 3 This is a schematic diagram of the protective mechanism of this utility model;

[0018] Figure 4 This is a schematic diagram of the limiting mechanism of this utility model;

[0019] Figure 5 This is a schematic diagram of the adjustment mechanism of this utility model.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. Wrench body; 2. Extension plate;

[0022] 3 Adjustment mechanism, 301 Support plate, 302 Insertion slot, 303 Insertion rod, 304 Insertion hole, 305 Connecting plate, 306 Spring;

[0023] 4. Protective mechanism, 401. Protective sleeve, 402. First threaded hole, 403. Second threaded hole, 404. First bolt;

[0024] 5 Limiting mechanism, 501 Third threaded hole, 502 Fourth threaded hole, 503 Second bolt, 504 Limiting ring, 505 Connecting rope, 506 Elastic ring. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0026] This utility model provides, for example Figures 1-5 An insulating wrench for electrical construction is shown, including a wrench body 1, an extension plate 2 at the bottom of the wrench body 1, and an adjustment mechanism 3 at the bottom of the wrench body 1 for adjusting the extension plate 2.

[0027] like Figure 5 As shown, the adjustment mechanism 3 includes a support plate 301 located at the top of the extension plate 2. The bottom of the wrench body 1 has a insertion groove 302. The wrench body 1 has an insertion rod 303 inside. The front end of the insertion rod 303 passes through the wrench body 1 and extends out of the front side of the wrench body 1. The support plate 301 has multiple insertion holes 304. The insertion rod 303 is adapted to the insertion holes 304. The support plate 301 and the insertion groove 302 are adapted to each other.

[0028] like Figure 5 As shown, a connecting plate 305 is fixedly provided on the front side of the plug rod 303, and two springs 306 are fixedly provided on the rear side of the connecting plate 305. The end of the spring 306 away from the connecting plate 305 is fixedly connected to the wrench body 1.

[0029] Pull the connecting plate 305 to pull the spring 306 out of the insertion hole 304. Then pull the extension plate 2 to drive the support plate 301 to slide inside the insertion groove 302. Adjust the distance between the wrench body 1 and the extension plate 2 according to the position of the bolt to facilitate the disassembly of bolts in different positions and improve the practicality of this utility model. After adjusting the distance, release the connecting plate 305. The spring 306 on one side of the connecting plate 305 can drive the insertion rod 303 to move according to its own elasticity. Insert the insertion rod 303 into the insertion hole 304 to fix the wrench body 1 and the extension plate 2 for use.

[0030] like Figure 3 As shown, the extension plate 2 is provided with a protective mechanism 4 for electrical insulation protection. The protective mechanism 4 includes a protective sleeve 401 that is sleeved on one side of the extension plate 2. The protective sleeve 401 is made of rubber. The protective sleeve 401 has a first threaded hole 402 and the extension plate 2 has a second threaded hole 403. The first threaded hole 402 and the second threaded hole 403 are connected internally with the same first bolt 404.

[0031] The protective sleeve 401 is placed over the extension plate 2, and then the first bolt 404 is rotated to the inside of the first threaded hole 402 and the second threaded hole 403. The first bolt 404 can be used to fix the protective sleeve 401 to the outside of the extension plate 2. The protective sleeve 401 is made of rubber, which has good electrical insulation properties. By setting the protective sleeve 401, electric shock can be avoided for workers, thus improving safety.

[0032] like Figure 4 As shown, the bottom of the protective sleeve 401 is provided with a limiting mechanism 5 for conveniently limiting the wrench body 1. The limiting mechanism 5 includes a third threaded hole 501 opened at the bottom of the protective sleeve 401, and a fourth threaded hole 502 opened on the extension plate 2. The fourth threaded hole 502 and the third threaded hole 501 are connected internally by a second bolt 503. A limiting ring 504 is provided through the outside of the second bolt 503. A connecting rope 505 is fixedly provided at the bottom of the limiting ring 504, and a tensioning ring 506 is fixedly provided at the bottom of the connecting rope 505.

[0033] First, the limiting ring 504 is placed on the outside of the second bolt 503. Then, the second bolt 503 is rotated to the inside of the third threaded hole 501 and the fourth threaded hole 502. The worker puts the tension ring 506 on his wrist, which can prevent the wrench body 1 from falling when working at height, thus improving safety. The tension ring 506 has elasticity and can be used for wrists of different sizes, thus expanding the scope of application of this utility model.

[0034] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An insulated wrench for electrical construction, comprising a wrench body (1), characterized in that: The wrench body (1) has an extension plate (2) at its bottom, and the wrench body (1) has an adjustment mechanism (3) for adjusting the extension plate (2) at its bottom. The adjustment mechanism (3) includes a support plate (301) at the top of the extension plate (2), a plug groove (302) is provided at the bottom of the inside of the wrench body (1), a plug rod (303) is provided inside the wrench body (1), the front end of the plug rod (303) passes through the wrench body (1) and extends out of the front side of the wrench body (1), and a plurality of plug holes (304) are provided on the support plate (301), and the plug rod (303) is adapted to the plug holes (304); The extension plate (2) is provided with a protective mechanism (4) for electrical insulation protection.

2. An insulated wrench for electrical construction according to claim 1, characterized in that: The support plate (301) and the insertion slot (302) are adapted to each other.

3. An insulated wrench for electrical construction according to claim 1, characterized in that: A connecting plate (305) is fixedly provided on the front side of the plug rod (303), and two springs (306) are fixedly provided on the rear side of the connecting plate (305). The end of the spring (306) away from the connecting plate (305) is fixedly connected to the wrench body (1).

4. An insulated wrench for electrical construction according to claim 1, characterized in that: The protective mechanism (4) includes a protective sleeve (401) fitted on one side of the extension plate (2). The protective sleeve (401) has a first threaded hole (402) and the extension plate (2) has a second threaded hole (403). The first threaded hole (402) and the second threaded hole (403) are connected by the same first bolt (404).

5. An insulated wrench for electrical construction according to claim 4, characterized in that: The protective sleeve (401) is made of rubber.

6. An insulated wrench for electrical construction according to claim 4, characterized in that: The bottom of the protective sleeve (401) is provided with a limiting mechanism (5) to facilitate the limiting of the wrench body (1). The limiting mechanism (5) includes a third threaded hole (501) at the bottom of the protective sleeve (401), and a fourth threaded hole (502) on the extension plate (2). The fourth threaded hole (502) and the third threaded hole (501) are connected by a second bolt (503) with threads inside. A limiting ring (504) is provided through the outside of the second bolt (503). A connecting rope (505) is fixedly provided at the bottom of the limiting ring (504), and a tension ring (506) is fixedly provided at the bottom of the connecting rope (505).