Spanner forcing device
By designing a torque-enhancing device that adapts to various wrench sizes, and utilizing limit pins, clamps, and baffles to transmit force, the problem of insufficient torque in wrench tools when tightening components is solved, achieving labor-saving and efficient tightening.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHENGDU CITY GAS
- Filing Date
- 2025-06-20
- Publication Date
- 2026-05-26
AI Technical Summary
Existing wrench tools require additional force-applying tools when dealing with highly tightened parts, but they are difficult to adapt to various wrench sizes, affecting maintenance efficiency.
A wrench force-applying device was designed, comprising a force-applying handle, a limiting post, a clamping plate, and a baffle. The limiting post engages with the wrench to limit its movement, while the clamping plate and baffle transmit the force, making it suitable for various sizes of wrenches.
It provides additional torque, enhances the tightening ability of the wrench, adapts to different wrench sizes, and improves maintenance efficiency and labor-saving effect.
Smart Images
Figure CN224274882U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wrenches, and in particular to a wrench force-applying device. Background Technology
[0002] In complex scenarios such as gas repair work, maintenance personnel often need to spend a lot of time and effort when handling components with high tightness. Insufficient tool strength can even delay the repair process. Therefore, additional torque-enhancing tools are needed to provide extra torque to the wrench, allowing maintenance personnel to complete the work more easily and quickly. However, wrenches come in various sizes, and finding a torque-enhancing tool that can accommodate multiple sizes presents a challenge. Summary of the Invention
[0003] Purpose of the invention: In order to overcome the shortcomings of the existing technology, this utility model provides a wrench force-adding device that can provide additional torque to the wrench and can adapt to various sizes of wrenches.
[0004] Technical Solution: To achieve the above objectives, this utility model provides a wrench force-applying device, including a force-applying handle. The front end of the force-applying handle is a wrench mounting end, and the rear end of the force-applying handle is a hand-held end. A limit post is provided on the wrench mounting end. When the tail end of the wrench is engaged with the limit post, the wrench can rotate around the limit post. A clamping plate and a baffle are also provided on the wrench mounting end. A clamping gap is formed between the clamping plate and the force-applying handle. The clamping gap and the limit post are located on the same side of the force-applying handle. One side of the clamping gap is an opening, allowing the wrench to rotate around the limit post to enter the opening of the clamping gap. The baffle blocks the other side of the clamping gap, preventing the wrench from continuing to rotate after entering the clamping gap, thereby transmitting force between the force-applying handle and the wrench.
[0005] The force-applying handle is provided with a mounting hole, which is located between the limiting post and the clamping plate. A locking pin can be detachably installed on the mounting hole. When the wrench is connected to the baffle, the end of the wrench is locked between the limiting post and the locking pin.
[0006] The clamping plate is integrally connected to the baffle, and the clamping plate is connected to the force-applying handle through the baffle.
[0007] An elastic pad is provided on the side of the baffle facing the clamping gap. When the baffle blocks the wrench, it is pressed tightly against the wrench through the elastic pad.
[0008] The clamping plates are arranged at an angle, and the clamping gap gradually narrows from the side near the baffle to the side near the opening; the side of the clamping plates near the opening of the clamping gap is provided with a raised edge.
[0009] The limiting post is provided with an annular groove; when the baffle blocks the wrench, the tail end of the wrench can be inserted into the annular groove.
[0010] An elastic washer is provided in the annular groove. When the end of the wrench is locked in the annular groove, it is pressed tightly against the limiting post by the elastic washer.
[0011] Beneficial effects: The wrench force-applying device of this utility model is provided with a limit post, a clamping plate and a baffle on the force-applying handle. The tail end of the wrench is limited and engaged with the limit post. Then the wrench is rotated around the limit post into the clamping gap between the clamping plate and the force-applying handle until the wrench abuts against the baffle. Thus, the force on the force-applying handle can be transmitted to the wrench through the baffle and the limit post, providing the wrench with additional torque. Moreover, the combination of the limit post, clamping plate and baffle allows the force-applying handle to be adapted to various sizes of wrenches. Attached Figure Description
[0012] Appendix Figure 1 This is a schematic diagram of the wrench force-applying device of this utility model;
[0013] Appendix Figure 2 This is a schematic diagram showing the connection between a single-ended open-end wrench and the torque-applying handle.
[0014] Appendix Figure 3 This is a schematic diagram showing the connection between a double-ended open-end wrench and the torque lever. Detailed Implementation
[0015] The present invention will be further described below with reference to the accompanying drawings.
[0016] As attached Figures 1 to 3 The aforementioned wrench force-applying device includes a force-applying handle 1. The front end of the force-applying handle 1 is a wrench mounting end for attaching a wrench. The rear end of the force-applying handle 1 is a hand-held end, which is gripped by the operator when using the force-applying handle 1 to tighten the wrench.
[0017] A limiting post 2 is provided on the mounting end of the wrench, and the limiting post 2 is perpendicular to the force-applying handle 1. The tail end of the wrench can be limited and engaged with the limiting post 2. (See attached image) Figure 2 As shown, if the wrench is a single-ended open-end wrench 12, and the tail end of the single-ended open-end wrench 12 has a hanging hole, then the hanging hole is fitted onto the limiting post 2, so that the hanging hole and the limiting post 2 are in a limiting fit. (See attached diagram) Figure 3 As shown, if the wrench is a double-ended open-end wrench 13, and the tail end of the double-ended open-end wrench 13 has a wrench notch, then the wrench notch is locked onto the limiting post 2, so that the wrench notch and the limiting post 2 are in a limiting engagement. Regardless of whether the tail end of the wrench has a hanging hole or a wrench notch, when the tail end of the wrench is in a limiting engagement with the limiting post 2, the wrench can rotate around the limiting post 2.
[0018] A clamping plate 3 and a baffle 4 are also provided on the wrench mounting end. With the wrench mounting end of the force-applying handle 1 as the front and the hand-held end as the rear, the clamping plate 3 is located in front of the limiting post 2, and the clamping plate 3 and the limiting post 2 are spaced apart. A clamping gap 5 is formed between the clamping plate 3 and the force-applying handle 1, and the clamping gap 5 and the limiting post 2 are located on the same side of the force-applying handle 1. One side of the clamping gap 5 is open, allowing the wrench to rotate around the limiting post 2 to enter the opening of the clamping gap 5, and then enter the clamping gap 5. The baffle 4 blocks the other side of the clamping gap 5. The baffle 4 can prevent the wrench that has entered the clamping gap 5 from continuing to rotate. Thus, as shown in the attached... Figure 2 and 3 As shown in the diagram, when the wrench is mounted on the extension handle 1, the operator can tighten the wrench using the extension handle 1, and the force is transmitted between the extension handle 1 and the wrench through the baffle 4 and the limiting post 2. Since the extension handle 1 effectively extends the handle of the wrench, it increases the length of the lever arm when tightening bolts, providing additional torque and making it easier for the operator to work. Moreover, the mounting structure formed by the limiting post 2, the clamping plate 3, and the baffle 4 has strong dimensional adaptability, and wrenches of different specifications can be mounted on the extension handle 1 as shown in the attached diagram.
[0019] As attached Figure 3 As shown, when the wrench is a double-ended open-end wrench 13, the wrench end may detach from the limiting post 2 when tightening the wrench via the force-applying handle 1. To address this, a mounting hole 6 is provided on the force-applying handle 1, located between the limiting post 2 and the clamping plate 3. A retaining pin 7 is detachably mounted on the mounting hole 6. The wrench end is thicker than the handle end, so when the wrench is engaged with the baffle 4, the end of the wrench will be locked between the limiting post 2 and the retaining pin 7, thus preventing the wrench end from detaching from the limiting post 2. Specifically, the mounting hole 6 is a threaded hole, and the retaining pin 7 has an external thread structure, allowing it to be threadedly installed within the mounting hole 6.
[0020] As attached Figure 1 As shown, the clamping plate 3 and the baffle 4 are integrally connected, and the clamping plate 3 and the baffle 4 are combined in an L-shape. The clamping plate 3 is connected to the force-applying handle 1 through the baffle 4, that is, the lower end of the baffle 4 is fixedly connected to the force-applying handle 1, and the upper end of the baffle 4 is fixedly connected to the baffle 4.
[0021] An elastic washer 8 is provided on the side of the baffle 4 facing the clamping gap 5. When the baffle 4 blocks the wrench, it is pressed tightly against the wrench through the elastic washer 8. Since different wrenches have different handle shapes, without the elastic washer 8, the contact area between the wrench and the baffle 4 would be very small, resulting in a large force per unit area and easily causing damage to the baffle 4. Therefore, the elastic washer 8 is provided to increase the contact area between the baffle 4 and the wrench and reduce the force per unit area.
[0022] As attached Figure 1As shown, the clamping plate 3 is angled, and the clamping gap 5 gradually narrows from the side near the baffle 4 to the side near the opening. The clamping plate 3 itself has a certain deformation capacity. When the wrench enters the clamping gap 5, the angled clamping plate 3 will deform and clamp the wrench, making it less likely for the wrench to wobble up and down. A raised edge 9 is also provided on the side of the clamping plate 3 near the opening of the clamping gap 5, which makes it easier for the wrench to enter the clamping gap 5.
[0023] The limiting post 2 is provided with an annular groove 10; when the baffle 4 blocks the wrench, the tail end of the wrench can be inserted into the annular groove 10, making it difficult for the tail end of the wrench to detach from the limiting post 2. An elastic washer 11 is provided in the annular groove 10, and when the tail end of the wrench is inserted into the annular groove 10, it is tightly pressed against the limiting post 2 by the elastic washer 11. Since different wrenches have different tail end shapes, without the elastic washer 11, the contact area between the limiting post 2 and the tail end of the wrench is small, resulting in a large force per unit area, which can easily damage the limiting post 2. Therefore, the elastic washer 11 is provided to increase the contact area between the limiting post 2 and the wrench and reduce the force per unit area.
[0024] Combined with appendix Figure 2 and 3 The working method of this utility model will be described below. When it is necessary to connect the wrench to the force-applying handle 1, first as shown in the attached figure. Figure 2 The wrench is shown with its hanging hole at the end fitting onto the limiting post 2, or as shown in the attached diagram. Figure 3 The diagram shows the wrench's end being engaged with the limiting post 2, then the wrench is rotated around the limiting post 2 until the handle is engaged in the clamping gap 5, and one side of the handle is pressed against the baffle 4. If the wrench's end has a hanging hole, then as shown in the attached diagram... Figure 2 As shown, the retaining pin 7 can be omitted. If the end of the wrench is a wrench jaw, then as shown in the attached diagram... Figure 3 As shown, additional locking pins 7 need to be installed so that the locking pins 7 cooperate with the limiting pins 2 to lock on both sides of the wrench opening, preventing the wrench opening from separating from the limiting pins 2.
[0025] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.
Claims
1. A wrench force-applying device, characterized in that: It includes a force-applying handle (1), the front end of which is a wrench mounting end and the rear end of which is a hand-held end; a limit post (2) is provided on the wrench mounting end, and when the tail end of the wrench is in a limited engagement with the limit post (2), the wrench can rotate around the limit post (2). The wrench is also provided with a clamping plate (3) and a baffle (4) at the mounting end; a clamping gap (5) is formed between the clamping plate (3) and the force-applying handle (1), and the clamping gap (5) and the limiting post (2) are located on the same side of the force-applying handle (1); one side of the clamping gap (5) is an opening, and the wrench can rotate around the limiting post (2) to enter the opening of the clamping gap (5); the baffle (4) blocks the other side of the clamping gap (5), and the baffle (4) can prevent the wrench that has entered the clamping gap (5) from continuing to rotate, so as to transmit the force between the force-applying handle (1) and the wrench.
2. The wrench force-applying device according to claim 1, characterized in that: The force-applying handle (1) is provided with a mounting hole (6), which is located between the limiting post (2) and the clamping plate (3). A locking pin (7) is detachably installed on the mounting hole (6). When the wrench is connected to the baffle (4), the end of the wrench is locked between the limiting post (2) and the locking pin (7).
3. The wrench force-applying device according to claim 1, characterized in that: The clamp (3) is integrally connected to the baffle (4), and the clamp (3) is connected to the force-applying handle (1) through the baffle (4).
4. The wrench force-applying device according to claim 3, characterized in that: An elastic pad (8) is provided on the side of the baffle (4) facing the clamping gap (5). When the baffle (4) blocks the wrench, it is pressed against the wrench by the elastic pad (8).
5. A wrench force-applying device according to claim 3, characterized in that: The clamping plate (3) is set at an angle, and the clamping gap (5) gradually narrows from the side near the baffle (4) to the side near the opening; a raised edge (9) is provided on the side of the clamping plate (3) near the opening of the clamping gap (5).
6. A wrench force-applying device according to claim 1, characterized in that: The limiting post (2) is provided with an annular groove (10); when the baffle (4) blocks the wrench, the tail end of the wrench can be inserted into the annular groove (10).
7. A wrench force-applying device according to claim 6, characterized in that: An elastic washer (11) is provided in the annular groove (10). When the end of the wrench is locked in the annular groove (10), it is pressed against the limiting post (2) through the elastic washer (11).