Multi-functional repair wrench

The design of this multi-functional maintenance wrench solves the problem of difficulty in disassembling and assembling nuts and bolts when there are obstructions, achieving efficient disassembly and assembly of nuts and bolts and improving maintenance efficiency.

CN224476127UActive Publication Date: 2026-07-10三峡新能源金昌风电有限公司 +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
三峡新能源金昌风电有限公司
Filing Date
2025-07-11
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

Existing wrenches are difficult to use when there are dense pipes or obstructions, making it difficult to install or remove nuts and bolts, resulting in difficult maintenance, a lot of manpower and time wasted, and low maintenance efficiency.

Method used

A multi-functional repair wrench was designed, including a handle, a telescopic rod, an adjustment mechanism, a bayonet, and a clamping assembly. The telescopic rod and adjustment mechanism work together to adjust the angle and length of the bayonet. The clamping assembly can accommodate nuts of different sizes. Combined with a magnetic pull rod and a storage box, it facilitates the installation and removal of nuts and bolts.

Benefits of technology

Nuts and bolts can be installed and removed without removing obstructions, improving maintenance efficiency and reducing labor and time costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model relates to the field of wrench technology and discloses a multifunctional repair wrench, including a handle. A telescopic rod is slidably connected to the middle of the handle, and an adjustment mechanism is installed on the outer side of the telescopic rod. A bayonet is fixedly connected to the outer side of the adjustment mechanism, and a clamping component is installed in the middle of the bayonet. The adjustment mechanism includes a connecting component and a positioning component. In this utility model, the connecting block rotatably connected to the outer side of the telescopic rod allows the wrench bayonet to rotate, enabling the wrench to avoid obstacles. The positioning hole on the outer side of the connecting block cooperates with the positioning block in the middle of the telescopic rod to lock the rotation angle of the bayonet, allowing the wrench to remove nuts and bolts in the area requiring repair. This eliminates the need to remove obstacles, significantly reducing repair time and improving repair efficiency.
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Description

Technical Field

[0001] This utility model relates to the field of wrench technology, and in particular to a multi-functional repair wrench. Background Technology

[0002] A wrench is a common tool for installation and disassembly. It is a hand tool that uses leverage to tighten or loosen bolts, screws, and nuts. Wrenches are usually made of carbon or alloy structural steel. A wrench typically has an opening or socket at one or both ends of the handle to hold the bolt or nut. When using it, applying force along the direction of thread rotation to the handle will tighten or loosen the bolt or nut.

[0003] Existing equipment typically consists of a handle, connecting block, adjusting screw, fixed bayonet, and sliding bayonet. The connecting block connects the handle and the fixed bayonet. The adjusting screw is installed in the middle of the fixed bayonet, and the sliding bayonet is slidably connected to the middle of the fixed bayonet. The teeth at the bottom of the sliding bayonet mesh with the teeth of the adjusting screw. By rotating the adjusting screw, the sliding bayonet moves, thereby enabling the disassembly of nuts and screws of different sizes.

[0004] When there are dense pipes or other obstructions, existing wrenches are not easy to turn, so it is necessary to remove these pipes or obstructions in order to disassemble and install nuts and bolts in such locations. This makes maintenance difficult, requires a lot of manpower and time, and results in low maintenance efficiency. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a multi-functional maintenance wrench, which aims to improve the problem that in the existing technology, when there are many obstructions or pipes at the location where the nut or screw needs to be disassembled or installed, it is necessary to remove these obstructions before the nut or screw can be disassembled or installed, which leads to inconvenience in maintenance, requires a lot of manpower and time, and results in low maintenance efficiency.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A multi-functional repair wrench includes a handle, a telescopic rod slidably connected to the middle of the handle, an adjustment mechanism installed on the outer side of the telescopic rod, a bayonet fixedly connected to the outer side of the adjustment mechanism, and a clamping component installed in the middle of the bayonet.

[0008] The adjustment mechanism includes a connecting component and a positioning component. The connecting component includes a connecting block, which is rotatably connected to the middle of the telescopic rod. Multiple positioning holes are provided on the outer side of the connecting block, and the other side of the connecting block is fixedly connected to the outer side of the bayonet.

[0009] As a further description of the above technical solution:

[0010] The positioning component includes a positioning block, which is slidably connected to the middle of the telescopic rod. The positioning block and the positioning hole are engaged with each other. A spring is provided inside the telescopic rod.

[0011] As a further description of the above technical solution:

[0012] A pivot is rotatably connected to the middle of the handle, and a storage box is fixedly connected to the outer periphery of the pivot. A compression spring is provided in the middle of the handle, and the compression spring is located below the storage box.

[0013] As a further description of the above technical solution:

[0014] A limit rod is slidably connected to the middle of the handle, and a spring is provided inside the handle;

[0015] As a further description of the above technical solution:

[0016] The telescopic rod has multiple limiting holes on its outer side, and the limiting rod and the limiting holes are engaged with each other;

[0017] As a further description of the above technical solution:

[0018] A magnetic pull rod is slidably connected to the middle of the handle, and a fixing hole is provided on the outer side of the magnetic pull rod;

[0019] As a further description of the above technical solution:

[0020] A fixing rod is slidably connected to the middle of the handle, and the fixing rod and the fixing hole are engaged with each other. A spring is provided inside the handle.

[0021] As a further description of the above technical solution:

[0022] The clamping assembly includes an adjusting screw, which is rotatably connected to the middle of the bayonet. A sliding caliper is slidably connected to the middle of the bayonet, and the bottom teeth of the sliding caliper mesh with the adjusting screw.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this utility model, the connecting block rotatably connected to the outside of the telescopic rod allows the wrench jaw to rotate, enabling the wrench to avoid obstacles. The positioning hole on the outside of the connecting block cooperates with the positioning block in the middle of the telescopic rod to lock the angle of the jaw rotation, allowing the wrench to remove the nuts and bolts in the area requiring repair. This eliminates the need to remove obstacles, thus reducing repair time and improving repair efficiency.

[0025] 2. In this utility model, a storage box is used to store the small wrench. When the small wrench is needed, the storage box can be pressed to deform the compression spring, thereby causing the storage box to rotate along the pivot and the opening of the box to be exposed from the middle of the handle. At this time, the small wrench can be taken out for use. Attached Figure Description

[0026] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0027] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a three-dimensional schematic diagram of a multifunctional repair wrench proposed in this utility model;

[0029] Figure 2 This is a cross-sectional schematic diagram of the telescopic rod of a multifunctional maintenance wrench proposed in this utility model;

[0030] Figure 3 This is a cross-sectional schematic diagram of a storage box for a multifunctional repair wrench proposed in this utility model.

[0031] Figure 4 This is a cross-sectional schematic diagram of the handle of a multifunctional repair wrench proposed in this utility model;

[0032] Figure 5 This is a schematic diagram of the magnetic pull rod of a multifunctional maintenance wrench proposed in this utility model.

[0033] Legend:

[0034] 1. Handle; 2. Telescopic rod; 3. Connecting block; 4. Bayonet; 5. Adjusting screw; 6. Sliding caliper; 7. Positioning hole; 8. Positioning block; 9. Spring 1; 10. Limiting hole; 11. Limiting rod; 12. Spring 2; 13. Rotating shaft; 14. Storage box; 15. Compression spring; 16. Magnetic pull rod; 17. Fixing hole; 18. Fixing rod; 19. Spring 3. Detailed Implementation

[0035] To better understand the above-mentioned objectives, features, and advantages of this disclosure, the solutions disclosed herein will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0036] Numerous specific details are set forth in the following description in order to provide a full understanding of this disclosure, but this disclosure may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some, and not all, of the embodiments of this disclosure.

[0037] Reference Figures 1-2 This utility model provides an embodiment of a multi-functional repair wrench, including a handle 1, with a telescopic rod 2 connected to the middle of the handle 1. The handle 1 provides support for the telescopic rod 2, enabling its stable operation. The telescopic rod 2 and the handle 1 cooperate to adjust the length of the wrench, facilitating the installation and removal of nuts in narrow and distant locations. An adjustment mechanism is installed on the outer side of the telescopic rod 2, allowing for angle adjustment of the wrench, facilitating the installation and removal of nuts in areas with many obstructions. A bayonet 4 is fixedly connected to the outer side of the adjustment mechanism, with a clamping component installed in the middle of the bayonet 4. The bayonet and the clamping component cooperate to clamp and fix the nut, facilitating the installation and removal of the nut. The clamping component allows for adjustment of the wrench's locking interface size, facilitating the installation and removal of nuts of different sizes. The adjustment mechanism includes a connecting component and a positioning component. The connecting component includes a connecting block 3. Block 3 is rotatably connected to the middle of the telescopic rod 2. Multiple positioning holes 7 are provided on the outer side of the connecting block 3. The other side of the connecting block 3 is fixedly connected to the outer side of the bayonet 4. The connecting block 3 allows the telescopic rod 2 to be connected to the bayonet 4, making them a whole and facilitating the disassembly and assembly of the nut. The positioning component includes a positioning block 8, which is slidably connected to the middle of the telescopic rod 2. The positioning block 8 and the positioning holes 7 are engaged with each other. A spring 9 is provided inside the telescopic rod 2 to provide support for the positioning block 8, enabling it to operate stably. The positioning holes 7 and the positioning block 8 cooperate to lock the connecting block 3, preventing displacement of the connecting block 3 during operation. The spring 9 provides a reset effect for the positioning block 8, allowing it to reset after movement. By adjusting the cooperation between the various structures of the adjustment mechanism, the angle of the wrench's bayonet can be adjusted, making it easier to disassemble and assemble nuts in places with many obstacles.

[0038] Reference Figure 1 , Figure 3 , Figure 4 and Figure 5A rotating shaft 13 is rotatably connected to the middle of the handle 1, and a storage box 14 is fixedly connected to the outer periphery of the rotating shaft 13. A compression spring 15 is set in the middle of the handle 1, located below the storage box 14. The rotating shaft 13 allows the storage box 14 to be installed in the middle of the handle 1 and to rotate. The compression spring 15 provides a limiting effect for the storage box 14, preventing it from shifting when using the wrench. The storage box 14 allows for the storage of small wrenches for easy access. A limit rod 11 is slidably connected to the middle of the handle 1, and a spring 12 is set inside the handle 1. Multiple limit holes 10 are opened on the outer side of the telescopic rod 2. The limit rod 11 and the limit holes 10 are interlocked. The handle 1 provides support for the limit rod 11, allowing it to operate stably. The limit holes 10 and the limit rod 11 cooperate to lock the telescopic rod 2, preventing it from shifting during operation. The second 12 allows the limit rod 11 to reset after movement. A magnetic pull rod 16 is slidably connected to the middle of the handle 1. A fixing hole 17 is opened on the outside of the magnetic pull rod 16. A fixing rod 18 is slidably connected to the middle of the handle 1. The fixing rod 18 and the fixing hole 17 are engaged with each other. A spring 3 19 is set inside the handle 1. The handle 1 provides support for the magnetic pull rod 16 and the fixing rod 18 so that they can run stably. The magnetic pull rod 16 is locked by the cooperation of the fixing rod 18 and the fixing hole 17, so that it will not be displaced during operation. The clamping assembly includes an adjusting screw 5. The adjusting screw 5 is rotatably connected to the middle of the bayonet 4. A sliding caliper 6 is slidably connected to the middle of the bayonet 4. The bottom teeth of the sliding caliper 6 are engaged with the adjusting screw 5. By cooperating with the adjusting screw 5 and the sliding caliper 6, the size of the wrench's clamping interface can be adjusted in time according to the size of the nut, so that the wrench can disassemble and install nuts of different sizes.

[0039] Working principle: When using the wrench, to remove or install a nut, the adjusting screw 5 can be rotated to move the sliding caliper 6, adjusting the size of the caliper interface to remove or install the nut. When the nut to be removed or installed is in a location with dense pipes or many obstructions, the positioning block 8 can be pushed to move it away from the positioning hole 7. At this time, the connecting block 3 can be pushed to rotate along the telescopic rod 2, simultaneously moving the caliper 4 and the sliding caliper 6, allowing the wrench to bend, thus facilitating the removal or installation of the nut. When the nut is in a narrow position and too far away, the limiting rod 11 can be pulled to disengage it from the limiting hole 10, thereby releasing the locking of the telescopic rod 2. At this time, the telescopic rod 2 can be pulled to slide in the handle 1, thus extending the length of the wrench, allowing the wrench to remove the nut in a distant and confined space.

[0040] When a small wrench is needed, pressing the storage box 14 deforms the compression spring 15, causing the storage box 14 to rotate along the pivot 13, raising the opening of the storage box 14 from the middle of the handle 1. The small wrench stored in the storage box 14 can then be taken out for use. When a nut falls into a narrow space, pulling the fixing rod 18 disengages it from the fixing hole 17, releasing the lock on the magnetic pull rod 16. Pulling the magnetic pull rod 16 moves it to the middle of the handle 1. When it reaches the designated position, releasing the fixing rod 18 allows the spring 19 to push it back to its original position and engage with the fixing hole 17, thus locking the magnetic pull rod 16. Extending the magnetic pull rod 16 towards the nut allows it to be attracted by magnetism, thus removing the nut from the narrow space.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0042] The above description is merely a specific embodiment of this disclosure, enabling those skilled in the art to understand or implement it. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this disclosure. Therefore, this disclosure is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A multi-functional repair wrench, comprising a handle, characterized in that: A telescopic rod is slidably connected to the middle of the handle, an adjustment mechanism is installed on the outside of the telescopic rod, a bayonet is fixedly connected to the outside of the adjustment mechanism, and a clamping component is installed in the middle of the bayonet; The adjustment mechanism includes a connecting component and a positioning component. The connecting component includes a connecting block, which is rotatably connected to the middle of the telescopic rod. Multiple positioning holes are provided on the outer side of the connecting block, and the other side of the connecting block is fixedly connected to the outer side of the bayonet.

2. The multi-functional repair wrench according to claim 1, characterized in that: The positioning component includes a positioning block, which is slidably connected to the middle of the telescopic rod. The positioning block and the positioning hole are engaged with each other, and a spring is provided inside the telescopic rod.

3. A multi-functional repair wrench according to claim 1, characterized in that: A pivot is rotatably connected to the middle of the handle, and a storage box is fixedly connected to the outer periphery of the pivot. A compression spring is provided in the middle of the handle, and the compression spring is located below the storage box.

4. A multi-functional repair wrench according to claim 1, characterized in that: A limit rod is slidably connected to the middle of the handle, and a spring is provided inside the handle.

5. A multi-functional repair wrench according to claim 4, characterized in that: The telescopic rod has multiple limiting holes on its outer side, and the limiting rod and the limiting holes are interlocked.

6. A multi-functional repair wrench according to claim 1, characterized in that: A magnetic pull rod is slidably connected to the middle of the handle, and a fixing hole is provided on the outer side of the magnetic pull rod.

7. A multi-functional repair wrench according to claim 6, characterized in that: A fixing rod is slidably connected to the middle of the handle, and the fixing rod and the fixing hole are engaged with each other. A spring is provided inside the handle.

8. A multi-functional repair wrench according to claim 1, characterized in that: The clamping assembly includes an adjusting screw, which is rotatably connected to the middle of the bayonet. A sliding caliper is slidably connected to the middle of the bayonet, and the bottom teeth of the sliding caliper mesh with the adjusting screw.