Universal inner hexagonal maintenance wrench
By designing a universal hexagonal inspection wrench, the problems of inconvenience in using existing wrenches in narrow spaces and insufficient durability have been solved. It achieves adjustable angle, strong wear resistance, and stable operation, thereby improving the efficiency and reliability of power maintenance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- POWER CHINA HENAN ENG CO LTD
- Filing Date
- 2025-07-31
- Publication Date
- 2026-07-14
AI Technical Summary
Existing six-way wrenches are inconvenient to use in narrow spaces, have no adjustable angle, and are not durable enough, making electrical maintenance operations difficult.
A universal hexagonal maintenance wrench was designed. The hexagonal wrench made of S2 tool steel has a chrome-plated surface and is combined with a fine-threaded adjusting screw and a high-strength aluminum alloy connecting sleeve to achieve adjustable angle, enhance wear resistance and corrosion resistance, and improve grip comfort through a rubber contact sleeve on the handle.
It enables flexible angle adjustment in confined spaces, improves tool durability and ease of operation, reduces labor intensity, extends service life, and improves power maintenance efficiency.
Smart Images

Figure CN224488960U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of auxiliary tools for power maintenance, and in particular to a universal hexagonal maintenance wrench. Background Technology
[0002] In the field of power maintenance, hex wrenches are widely used to disassemble numerous power infrastructure devices. With their unique advantages, hex wrenches play an irreplaceable role in the repair and assembly of various power infrastructure equipment. Power equipment is typically connected by a large number of nuts and bolts. Tightening and disassembling these connecting parts is a crucial part of power maintenance work. Hex wrenches, due to their efficient operation and good compatibility with hexagonal nuts or bolts, have become one of the preferred tools for power maintenance personnel. However, with the continuous updating and increasing complexity of power equipment, the requirements for hex wrenches are also becoming more stringent. In actual power maintenance work, the fixing nuts on some power equipment are located in relatively narrow spaces. Most existing hex wrenches have significant limitations: their tightening angle is difficult to adjust. When a hex wrench is engaged with a hexagonal slotted wrench, it can only rotate within a specific spatial area, which greatly limits the wrench's use and brings many inconveniences to operation. Furthermore, the wear resistance and corrosion resistance of existing wrenches need to be improved to better adapt to complex maintenance environments. Electrical maintenance work is often carried out in various harsh environments, so wrenches need to have sufficient wear resistance and corrosion resistance to ensure their reliability and stability during long-term use.
[0003] Therefore, to overcome the shortcomings of existing technologies, meet the needs of use in confined spaces, and improve the durability and ease of operation of tools, it is necessary to develop a new type of universal hexagonal inspection wrench. This wrench should possess the following characteristics: First, it should be able to flexibly adjust the tightening angle in confined spaces to accommodate nuts and bolts in different positions; second, it should have high wear resistance and corrosion resistance to adapt to complex maintenance environments; finally, it should be rationally designed, easy to operate, and able to improve maintenance efficiency and reduce the labor intensity of maintenance personnel. By developing this new type of universal hexagonal inspection wrench, the problems existing with current hexagonal wrenches in power maintenance work can be effectively solved, providing power maintenance personnel with a more efficient, reliable, and convenient tool. Utility Model Content
[0004] The technical problem to be solved by this utility model is to provide a universal hexagonal inspection wrench to solve the problems of inconvenience in use in narrow spaces, non-adjustable angle, and insufficient durability of existing hexagonal wrenches.
[0005] The technical solution adopted by this utility model to solve the technical problem is as follows:
[0006] A universal hexagonal inspection wrench includes a handle, a support fixedly mounted on the top of the handle, a through groove provided in the support, and an adjusting screw inserted through the through groove in the support; a hexagonal screw rod and a hexagonal nut are sequentially fixedly sleeved on the adjusting screw, and an end cap is fixedly mounted on one end of the adjusting screw; a connecting sleeve is also provided in the support, the connecting sleeve is used to support the adjusting screw and allow it to rotate freely in the support.
[0007] Preferably, the hexagonal screw rod is L-shaped; the support is U-shaped, the connecting sleeve is located inside the U-shaped support, and there is a gap of equal distance between the two ends of the connecting sleeve and the inner walls of the two sides of the support.
[0008] Preferably, the hexagonal screw rod is made of S2 tool steel, and the surface of the hexagonal screw rod is provided with a chrome plating layer to improve wear resistance and corrosion resistance.
[0009] Preferably, a rubber contact sleeve is fixedly fitted onto the outer wall of the grip to improve grip comfort and stability.
[0010] Preferably, the hexagonal nut is made of high-strength steel, and the inner diameter of the hexagonal nut matches the outer diameter of the adjusting screw; the end has a circular cross-sectional shape, and a circular groove is provided at the center of the end, with an internal thread in the circular groove that matches the external thread of the adjusting screw, for fixing the adjusting screw and preventing it from falling out of the support; the hexagonal nut and the end are located on both sides of the support, and together they are used to fix the adjusting screw.
[0011] Preferably, the hexagonal nut and the end are fixed to the adjusting screw by a threaded connection to ensure the stability of the adjusting screw position during use.
[0012] Preferably, the thread of the adjusting screw is a fine thread, and the adjustment range of the adjusting screw is 0° to 90°.
[0013] Preferably, the connecting sleeve is made of high-strength aluminum alloy, and the inner surface of the connecting sleeve is provided with a wear-resistant coating.
[0014] Preferably, the outer wall of the grip is provided with anti-slip texture to improve grip stability.
[0015] 1. Adjustable angle and strong adaptability: ① Through the design of the adjusting screw, the hexagonal screw rod can rotate freely within the support, realizing arbitrary angle adjustment. This design is particularly suitable for maintenance work in narrow spaces. Users can adjust the angle of the hexagonal screw rod according to actual needs, so that it can easily reach and operate nuts or bolts located in different positions; ② By adjusting the position of the adjusting screw, the hexagonal screw rod can adapt to nuts or bolts of different depths, enhancing the versatility and flexibility of the tool.
[0016] 2. High durability and long service life: ① The hexagonal wrench is made of S2 tool steel, which has high strength and good wear resistance. In addition, the surface of the hexagonal wrench is chrome-plated, which further improves its wear resistance and corrosion resistance, ensuring that the tool maintains good performance during long-term use. ② The chrome plating not only improves wear resistance but also enhances the corrosion resistance of the hexagonal wrench, which allows the wrench to maintain good performance in humid or corrosive environments, extending the tool's service life. ③ There is a uniform gap between the two ends of the connecting sleeve and the inner walls of both sides of the support. This design reduces friction between the connecting sleeve and the support, further extending the tool's service life.
[0017] 3. Stable operation and high reliability: ① The hexagonal nut and end cap are connected by threads to fix the adjusting screw, ensuring the stability of the adjusting screw's position during use; the hexagonal nut is made of high-strength steel, providing sufficient fixing force to prevent the adjusting screw from loosening or falling off during operation. ② The end cap has a circular cross-section with a circular groove at its center. The groove contains an internal thread that matches the external thread of the adjusting screw. This design not only fixes the adjusting screw 4 but also prevents it from falling off the support 2, improving the tool's reliability.
[0018] 4. Comfortable grip and convenient operation: ① The outer wall of the handle is fitted with a rubber contact sleeve with anti-slip texture, improving grip comfort and stability; the rubber contact sleeve has good anti-slip performance, allowing users to firmly grip the wrench even in wet or oily environments, reducing hand fatigue. ② The adjusting screw has a fine thread, with an adjustment range of 0° to 90°, meeting different angle adjustment needs. This design makes operation more flexible, allowing users to quickly adjust to the required angle and improve work efficiency.
[0019] 5. Simple structure and low manufacturing cost: ① The universal hexagonal inspection wrench of this utility model has a simple structure and clear connection method between each component, which is easy to manufacture and assemble. This design not only reduces manufacturing costs but also improves production efficiency; ② The materials used (such as S2 tool steel, high-strength aluminum alloy, etc.) are all common industrial materials, which are easy to purchase and further reduce production costs.
[0020] 6. Environmental protection and energy saving: ① All materials used meet environmental protection standards and will not cause pollution to the environment. The durability and long life of the tools reduce the frequency of replacement and further reduce resource waste; ② Through optimized structural design, the energy loss of the tools during use is reduced and the energy utilization efficiency is improved. Attached Figure Description
[0021] Figure 1 This is a three-dimensional structural diagram of the universal hexagonal inspection wrench proposed in this utility model.
[0022] Figure 2 This is a side view of the universal hexagonal inspection wrench proposed in this utility model.
[0023] Figure 3 This is a front view structural diagram of the universal hexagonal inspection wrench proposed in this utility model;
[0024] Figure 4 This is a top view of the universal hexagonal inspection wrench proposed in this utility model.
[0025] In each diagram: 1--handle, 2--support, 3--through groove, 4--adjusting screw, 5--connecting sleeve, 6--hexagonal screw rod, 7--hexagonal nut, 8--end. Detailed Implementation
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0027] Example: Figures 1-4 As shown, a universal hexagonal inspection wrench includes a handle 1, a support 2 fixedly installed on the top of the handle 1, a through groove 3 provided in the support 2, and an adjusting screw 4 inserted through the through groove 3 in the support 2; a hexagonal screw rod 6 and a hexagonal nut 7 are sequentially fixedly sleeved on the adjusting screw 4, and an end cap 8 is fixedly installed at one end of the adjusting screw 4; a connecting sleeve 5 is also provided in the support 2, which supports the adjusting screw 4 and allows it to rotate freely in the support 2.
[0028] The hexagonal screw rod 6 is L-shaped, the support 2 is U-shaped, the connecting sleeve 5 is located inside the U-shaped support, and there is a gap of the same distance between the two ends of the connecting sleeve 5 and the inner walls of the two sides of the support 2.
[0029] The hexagonal screw rod 6 is made of S2 tool steel and has a chrome-plated surface to improve its wear resistance and corrosion resistance.
[0030] A rubber contact sleeve is fixedly fitted onto the outer wall of the grip 1 to improve grip comfort and stability.
[0031] The hexagonal nut 7 is made of high-strength steel, and its inner diameter matches the outer diameter of the adjusting screw 4. The end 8 has a circular cross-section, and a circular groove is provided at the center of the end 8. The circular groove has an internal thread, which matches the external thread of the adjusting screw 4. This internal thread is used to fix the adjusting screw 4 and prevent it from falling out of the support 2. The hexagonal nut 7 and the end 8 are located on both sides of the support 2, and together they are used to fix the adjusting screw 4.
[0032] The hexagonal nut 7 and the end 8 are fixed to the adjusting screw 4 by a threaded connection to ensure the stability of the adjusting screw 4 during use.
[0033] The adjusting screw 4 has a fine thread, and the adjusting range of the adjusting screw is 0° to 90°.
[0034] The connecting sleeve 5 is made of high-strength aluminum alloy, and the inner surface of the connecting sleeve 5 is provided with a wear-resistant coating.
[0035] Anti-slip texture is provided on the outer wall of the grip 1 to improve grip stability.
[0036] This utility model's universal hexagonal inspection wrench, through its unique structural design, enables flexible angle adjustment and tightening or loosening of hexagonal nuts or bolts in narrow spaces.
[0037] A. Structural Composition:
[0038] The grip 1 provides a comfortable grip and operational stability; the support 2 is fixedly installed on the top of the grip 1 and has a through groove 3 inside; the adjusting screw 4 passes through the through groove 3, passes through the support 2 and is inserted into it, and is used to adjust the angle of the hexagonal screw rod 6; the hexagonal screw rod 6 is fixedly sleeved on the adjusting screw 4 and is used to cooperate with the hexagonal nut or bolt; the hexagonal nut 7 is sleeved on the adjusting screw 4 and is used to fix the position of the adjusting screw 4; the end 8 is fixedly installed on one end of the adjusting screw 4 to prevent the adjusting screw 4 from falling out of the support 2; the connecting sleeve 5 is set in the support 2 to support the adjusting screw 4 and allow it to rotate freely in the support 2.
[0039] B. Work Process:
[0040] In use, the hexagonal lever 6 is turned, causing the adjusting screw 4 to rotate within the support 2. The rotation of the adjusting screw 4 drives the connecting sleeve 5 to rotate, which in turn drives the hexagonal lever 6 to rotate. This allows for arbitrary adjustment of the position of the hexagonal lever 6, facilitating its use in confined spaces. After adjusting the angle of the hexagonal lever 6, the hexagonal nut 7 is screwed onto the adjusting screw 4 and turned. Through the transmission action of the threaded connection, the hexagonal nut 7 rotates and presses against the support 2, generating tension on the adjusting screw 4. This allows the end 8 to press against the other side of the support 2, thus fixing the adjusted angle of the hexagonal lever 6. The hexagonal lever 6 is then inserted into the hexagonal groove, and the handle 1 is rotated to drive the hexagonal lever 6 to rotate. The hexagonal nut or bolt is then turned using the hexagonal lever 6 to disassemble and repair the electrical equipment. The operation is convenient and easy to use.
[0041] This utility model, through its unique structural design, enables flexible adjustment of angles and tightening or loosening of hexagonal nuts or bolts in narrow spaces. It not only improves operational flexibility and stability but also enhances the tool's durability and service life, providing power maintenance personnel with an efficient, reliable, and convenient auxiliary tool.
[0042] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A universal hexagonal inspection wrench, comprising a handle (1), characterized in that: A support (2) is fixedly installed on the top of the grip (1). A through groove (3) is provided in the support (2), and an adjusting screw (4) is inserted through the through groove (3) in the support (2). A hexagonal screw rod (6) and a hexagonal nut (7) are fixedly sleeved on the adjusting screw (4) in sequence. An end head (8) is fixedly installed at one end of the adjusting screw (4). A connecting sleeve (5) is also provided in the support (2). The connecting sleeve (5) is used to support the adjusting screw (4) and allow it to rotate freely in the support (2).
2. The universal hexagonal inspection wrench according to claim 1, characterized in that: The hexagonal screw rod (6) is L-shaped; the support (2) is U-shaped, the connecting sleeve (5) is located inside the U-shaped support, and there is a gap of the same distance between the two ends of the connecting sleeve (5) and the inner walls of both sides of the support (2).
3. The universal hexagonal inspection wrench according to claim 2, characterized in that: The hexagonal screw rod (6) is made of S2 tool steel, and the surface of the hexagonal screw rod (6) is provided with a chrome plating layer to improve wear resistance and corrosion resistance.
4. The universal hexagonal inspection wrench according to claim 1, characterized in that: The outer wall of the grip (1) is fixedly fitted with a rubber contact sleeve to improve the comfort and stability of the grip.
5. The universal hexagonal inspection wrench according to claim 1, characterized in that: The hexagonal nut (7) is made of high-strength steel, and the inner diameter of the hexagonal nut (7) matches the outer diameter of the adjusting screw (4); the cross-sectional shape of the end (8) is circular, and a circular groove is provided at the center of the end (8), and an internal thread is provided in the circular groove. The internal thread matches the external thread of the adjusting screw (4) and is used to fix the adjusting screw (4) and prevent the adjusting screw (4) from falling out of the support (2); the hexagonal nut (7) and the end (8) are located on both sides of the support (2) respectively, and are used together to fix the adjusting screw (4).
6. The universal hexagonal inspection wrench according to claim 5, characterized in that: The hexagonal nut (7) and the end (8) are fixed to the adjusting screw (4) by threaded connection to ensure that the position of the adjusting screw (4) is stable during use.
7. The universal hexagonal inspection wrench according to claim 1, characterized in that: The thread of the adjusting screw (4) is a fine thread, and the adjustment range of the adjusting screw (4) is 0° to 90°.
8. The universal hexagonal inspection wrench according to claim 1, characterized in that: The connecting sleeve (5) is made of high-strength aluminum alloy, and the inner surface of the connecting sleeve (5) is provided with a wear-resistant coating.
9. The universal hexagonal inspection wrench according to claim 1, characterized in that: The outer wall of the grip (1) is provided with anti-slip texture to improve grip stability.