power-assisted lever
By designing the wrench head and assist rod structure, the problem of the universal wrench being unable to rotate when encountering an obstacle is solved, achieving the effect of continuing to rotate even with an obstacle and multi-functional adaptation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YUEQING YU TIE HAMMER TOOL CO LTD
- Filing Date
- 2026-02-12
- Publication Date
- 2026-05-26
AI Technical Summary
Existing universal wrenches are prone to encountering resistance during rotation and cannot continue to rotate, and their uses are limited.
An assist wrench was designed, including a wrench head and an assist rod. The wrench head is provided with multiple extended assist connection holes, and the side of the assist rod has a square groove, which can continue to rotate around the short rod by rotating the wrench head when encountering an obstacle. The other end of the assist rod has an external square structure to adapt to different tools.
It can continue to rotate even when there are obstructions, is highly versatile, labor-saving, applicable to a variety of tools, and easy to operate.
Smart Images

Figure CN224274872U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of power assist levers, specifically a power assist lever. Background Technology
[0002] Currently, universal wrenches are widely used in various fields, mainly for the disassembly and installation of parts. They are usually composed of a wrench head and a handle. The wrench head and handle are processed and shaped separately through specific processes, and then assembled together by connecting structural components.
[0003] When using a universal wrench, the user engages the wrench head with the extended L-shaped hex wrench. However, during rotation, the handle rotates very widely, easily encountering resistance and failing to continue rotating, thus failing to rotate the object being worked on. Furthermore, its application is limited and needs improvement. Utility Model Content
[0004] The purpose of this utility model is to provide a power assist lever to solve the problems mentioned in the background art, which has the advantage of being able to rotate even when there are obstructions.
[0005] To achieve the above objectives, the present invention provides the following technical solution: an assist wrench, comprising a wrench head, the wrench head including a first wrench head and a second wrench head, the first wrench head being provided with a plurality of first extended assist connection holes penetrating the first wrench head, the second wrench head being provided with a plurality of second extended assist connection holes, the plurality of second extended assist connection holes being connected to the first wrench head, and a connecting part integrally connected to the side of the first wrench head opposite to the second wrench head, the connecting part being threadedly connected or integrally connected to an assist rod.
[0006] By adopting the above technical solution, one end of the L-shaped internal hexagonal extension wrench is inserted into the first extension assist connection hole of the first wrench head. The L-shaped internal hexagonal extension wrench consists of a long rod and a short rod. Rotating the first wrench head causes the L-shaped internal hexagonal extension wrench to rotate around its own long rod. During this process, the first wrench head will also rotate with the L-shaped internal hexagonal extension wrench. When the first wrench head rotates to the obstruction, it will no longer be able to drive the L-shaped internal hexagonal extension wrench to rotate. At this time, the L-shaped internal hexagonal extension wrench stops rotating, allowing the first wrench head to rotate around the short rod of the L-shaped internal hexagonal extension wrench until the first wrench head is on the other side of the short rod of the L-shaped internal hexagonal extension wrench. At this time, the obstruction will no longer prevent the first wrench head from continuing to rotate, and the L-shaped internal hexagonal extension wrench can continue to be driven to rotate by the first wrench head.
[0007] As a further embodiment of this utility model: the side of the assisting rod is provided with an inwardly recessed square groove.
[0008] By adopting the above technical solution, the square groove makes it easy to insert foreign objects into the side of the booster rod, thereby driving the whole rotation.
[0009] As a further improvement of this utility model, the end of the assist rod away from the connecting part is configured as an external square structure.
[0010] By adopting the above technical solution, the cubic shape is used as a connector.
[0011] As a further improvement of this utility model: one end of the outer square structure is provided with an inner hexagonal bit hole.
[0012] As a further improvement of this utility model: the plurality of first extended auxiliary connection holes are configured with different sizes, and the plurality of second extended auxiliary connection holes are configured with different sizes.
[0013] By adopting the above technical solution, first and second extended auxiliary connection holes of different sizes can be matched with internal hexagonal L-shaped extension plates of different sizes.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] 1. Insert one end of the L-shaped extension wrench into the first extension assist connection hole of the first wrench head. The L-shaped extension wrench has a long rod and a short rod. Rotate the first wrench head to make the L-shaped extension wrench rotate around its long rod. During this process, the first wrench head will also rotate with the L-shaped extension wrench. When the first wrench head rotates to the obstruction, it will no longer be able to drive the L-shaped extension wrench to rotate. At this time, the L-shaped extension wrench will stop rotating and allow the first wrench head to rotate around the short rod of the L-shaped extension wrench until the first wrench head is on the other side of the short rod of the L-shaped extension wrench. At this time, the obstruction will no longer prevent the first wrench head from continuing to rotate. Continue to use the first wrench head to drive the L-shaped extension wrench to rotate.
[0016] 2. This utility model has multiple uses. When there are obstructions, the wrench head can rotate freely by adapting to the internal hexagon L-shaped extension wrench, eliminating the need for repeated fastener fitting. The external square structure or further internal hexagon bit structure at the other end of the assist rod enhances its versatility, making it compatible with hand tools for different purposes, saving labor and effort, and facilitating operation. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure after removing the booster rod in an embodiment;
[0018] Figure 2 This is a schematic diagram of the structure of an embodiment;
[0019] Figure 3 for Figure 1 A schematic diagram of the structure after applying the internal hexagonal L-shaped extension wrench.
[0020] In the diagram: 1. Square groove; 2. Assist rod; 3. First wrench head; 4. Second wrench head; 5. First extended assist connection hole; 6. Second extended assist connection hole; 7. Connecting part; 8. Internal hexagon L-shaped extension wrench. Detailed Implementation
[0021] The technical solutions in the embodiments of this utility model are described clearly and completely below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, those skilled in the art who do not make innovative embodiments are all within the protection scope of this utility model.
[0022] In this embodiment of the utility model,
[0023] A type of lever, such as Figures 1-3 As shown, the device includes a wrench head, which includes a first wrench head 3 and a second wrench head 4. The first wrench head 3 is provided with a plurality of first extended assist connection holes 5 penetrating through the first wrench head 3. The second wrench head 4 is provided with a plurality of second extended assist connection holes 6, all of which are connected to the first wrench head 3. A connecting part 7 is integrally connected to the side of the first wrench head 3 away from the second wrench head 4. The connecting part 7 is threadedly connected or integrally connected to an assist rod 2.
[0024] The side of the assist rod 2 is provided with an inwardly recessed square groove 1.
[0025] The end of the assist rod 2 away from the connecting part is configured as an external square structure, and the external square structure is provided with an internal hexagonal screwdriver bit hole. This integrated design allows for compatibility with different tools.
[0026] The plurality of first extended auxiliary connection holes 5 are configured with different sizes, and the plurality of second extended auxiliary connection holes 6 are configured with different sizes.
[0027] The preferred dimensions of the first extended auxiliary connection hole 5 and the second extended auxiliary connection hole 6 are 7.3 mm, 9.8 mm, and 14.3 mm, respectively.
[0028] Working principle:
[0029] Insert one end of the L-shaped internal hexagonal extension wrench 8 into the first extension assist connection hole 5 of the first wrench head 3. The L-shaped internal hexagonal extension wrench 8 consists of a long rod and a short rod. Rotate the first wrench head 3 to drive the long rod to rotate around itself. During this process, the first wrench head 3 will also rotate. When the first wrench head 3 rotates to the obstruction, it will be unable to continue to rotate. At this time, stop rotating and let the first wrench head 3 rotate around the short rod until the first wrench head 3 is on the other side of the short rod. At this time, the obstruction will no longer prevent the first wrench head 3 from continuing to rotate. Continue to use the first wrench head 3 to drive the rotation.
[0030] 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 lever, comprising a lever head, characterized in that: The wrench head includes a first wrench head (3) and a second wrench head (4). The first wrench head (3) is provided with a plurality of first extended assist connection holes (5) penetrating the first wrench head (3). The second wrench head (4) is provided with a plurality of second extended assist connection holes (6). The plurality of second extended assist connection holes (6) are all connected to the first wrench head (3). The first wrench head (3) is integrally connected to a connecting part (7) on the side opposite to the second wrench head (4). The connecting part (7) is threadedly connected or integrally connected to an assist rod (2).
2. The power assist lever according to claim 1, characterized in that: The side of the assist rod (2) is provided with an inwardly recessed square groove (1).
3. The power assist lever according to claim 1, characterized in that: The end of the assist rod (2) facing away from the connecting part (7) is configured as an outer square structure.
4. The power assist lever according to claim 3, characterized in that: One end of the external square structure is provided with an internal hexagonal bit hole.
5. The power assist lever according to claim 1, characterized in that: The multiple first extended assist connection holes (5) are set to different sizes, and the multiple second extended assist connection holes (6) are set to different sizes.