Special dismounting torque wrench for oil drain bolt
By integrating a sealed magnetic ring and a foldable structure, the wrench design solves the problems of oil splashing and insufficient torque during the disassembly and assembly of existing wrenches, and realizes oil collection and torque adjustment, improving the convenience and efficiency of operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YANGJIANG POLYTECHNIC
- Filing Date
- 2025-07-29
- Publication Date
- 2026-06-26
AI Technical Summary
Existing torque wrenches have limited functionality, cannot meet the needs of precise operation, are prone to oil splashing and are inconvenient to operate, and are difficult to effectively increase torque during disassembly and assembly.
A special torque wrench for removing and installing oil drain bolts has been designed, which integrates a sealing magnetic ring, a foldable oil pipe, a wrench head, a wrench shaft, a wrench handle, a foldable oil reservoir, and a socket, etc., to achieve directional oil flow, torque adjustment, and convenient storage, and increase the disassembly torque.
It effectively prevents oil splashing, achieves precise torque control, facilitates oil recovery and tool storage, reduces operational difficulty, and improves disassembly and assembly efficiency.
Smart Images
Figure CN224407455U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive disassembly and assembly technology, and in particular to a tool for disassembling and installing an oil pan drain plug. Background Technology
[0002] A drain plug is a special bolt used to seal and drain fluid from automotive fluid storage components (such as the engine oil pan and transmission oil pan). It is a core component that must be removed and installed during automotive maintenance (especially when changing engine oil and transmission fluid). A torque wrench is required to remove the drain plug.
[0003] Existing torque wrenches are limited in function and lack integrated torque adjustment, failing to meet the technical requirements of precise operation scenarios. In oil pan bolt removal and installation, they require an additional oil can, which easily leads to oil splashing, contaminating the tool surface, work area, and operator's hands, further reducing ease of use. Furthermore, in bolt loosening, the bolt tightness is often too high and the wrench handle length is insufficient, making it difficult to effectively increase the torque.
[0004] Therefore, we propose a torque wrench specifically for removing and installing oil drain bolts. Utility Model Content
[0005] (a) Technical problems to be solved
[0006] To address the shortcomings of existing technologies, this utility model provides a torque wrench specifically designed for removing and installing oil drain bolts. Its oil delivery pipe enables directional oil flow to effectively prevent splashing, and it integrates output torque adjustment, oil storage, and a folding storage structure. This not only meets the torque control requirements for precise operation but also facilitates oil recovery and tool folding and storage.
[0007] (II) Technical Solution
[0008] To achieve the above objectives, this utility model provides the following technical solution: a torque wrench for removing and installing oil drain bolts, comprising a sealing magnetic ring, a foldable oil pipe, a wrench head, a wrench shaft, a torque adjustment knob, a wrench handle, a first wrench handle sleeve, a second wrench handle sleeve, a third wrench handle sleeve, a foldable oil reservoir, a sleeve, and a perforated square tenon. The sealing magnetic ring is fixedly installed on the upper end of the foldable oil pipe, the foldable oil pipe is fixedly connected to the upper end of the wrench head, the wrench head is connected to one end of the wrench shaft, the other end of the wrench shaft is connected to the wrench handle, and the first wrench handle sleeve is fitted onto the end of the wrench handle away from the wrench shaft.
[0009] The foldable oil storage tank is threaded onto the bottom of the wrench head.
[0010] Preferably, the torque adjustment knob is located on the wrench handle.
[0011] Preferably, a second wrench handle sleeve is fitted onto the end of the first wrench handle sleeve that is away from the wrench handle, and a third wrench handle sleeve is fitted onto the end of the second wrench handle sleeve that is away from the first wrench handle sleeve.
[0012] Preferably, the top of the wrench head is provided with a perforated square tenon, and the sleeve is fitted onto the top of the perforated square tenon.
[0013] Preferably, the bottom of the sleeve is provided with a square groove that matches the perforated square tenon.
[0014] Preferably, the sleeve has a first oil guide hole inside, and the wrench head has a second oil guide hole inside.
[0015] Preferably, the bottom of the wrench head is provided with a threaded head, and the foldable oil storage tank is threadedly connected to the wrench head through the threaded head.
[0016] (III) Beneficial Effects
[0017] Compared with the prior art, the present invention provides a method with the following beneficial effects:
[0018] 1. This utility model, through the arrangement of a sealing magnetic ring, a foldable oil pipe, a wrench head, a wrench handle, a foldable oil reservoir, a socket, and a perforated square tenon, allows for the following when using the wrench: a socket compatible with the oil pan bolt can be installed on the perforated square tenon, aligning the socket with the wrench head. Then, the foldable oil pipe can be stretched, extending it. The sealing magnetic ring can then be attracted to the oil pan bolt, and the foldable oil reservoir can be connected to the threaded head, thus fixing the foldable oil reservoir in place. At the bottom of the wrench head, the wrench handle can be rotated during operation, causing the wrench head to rotate via the wrench shaft. This, in turn, causes the socket to rotate, which in turn rotates the oil pan bolt. This allows for the removal and installation of the oil pan bolt. During this process, engine oil flows along the foldable oil pipe and then through the second oil guide hole inside the wrench head into the foldable oil reservoir. This collects and stores the engine oil, preventing oil splashing and contamination of the tool surface, work area, and operator's hands.
[0019] 2. By setting up a first wrench handle sleeve, a second wrench handle sleeve, and a third wrench handle sleeve, when the bolt tightness is too high, the first wrench handle sleeve, the second wrench handle sleeve, and the third wrench handle sleeve can be adjusted to extend, change the handle length, adjust the force application point, and extend the lever arm to effectively increase the disassembly torque and reduce the difficulty of operation.
[0020] 3. After use, the foldable oil pipe and foldable oil tank can be folded to their limit, and the first wrench handle sleeve, the second wrench handle sleeve and the third wrench handle sleeve can be adjusted to the folded state to reduce the overall space occupied and facilitate storage. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the disassembled structure of this utility model;
[0022] Figure 2 This is a structural schematic diagram of the present invention in its working state;
[0023] Figure 3 This is a schematic diagram of the structure of this utility model when it is being stored.
[0024] Figure 4 This is a cross-sectional structural diagram of the wrench head of this utility model;
[0025] Figure 5 This is a cross-sectional structural diagram of the sleeve of this utility model.
[0026] In the picture:
[0027] 1. Sealing magnet ring; 2. Foldable oil pipe; 3. Wrench head; 4. Wrench handle; 5. Torque adjustment knob; 6. Wrench handle; 7. First wrench handle sleeve; 8. Second wrench handle sleeve; 9. Third wrench handle sleeve; 10. Foldable oil reservoir; 11. Socket; 12. Perforated square tenon; 13. Threaded head; 14. Square groove; 15. First oil guide hole; 16. Second oil guide hole. Detailed Implementation
[0028] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.
[0029] This utility model provides a technical solution:
[0030] Please see Figures 1-5This is a torque wrench specifically designed for removing and installing drain bolts. It includes a sealing magnetic ring 1, a foldable oil pipe 2, a wrench head 3, a wrench handle 4, a torque adjustment knob 5, a wrench handle 6, a first wrench handle sleeve 7, a second wrench handle sleeve 8, a third wrench handle sleeve 9, a foldable oil reservoir 10, a socket 11, and a perforated square tenon 12. The sealing magnetic ring 1 is fixedly installed on the upper end of the foldable oil pipe 2, which is fixedly connected to the upper end of the wrench head 3. The wrench head 3 is connected to one end of the wrench handle 4, and the other end of the wrench handle 4 is connected to the wrench handle 6. The top of the wrench head 3 is equipped with... A perforated square tenon 12 is provided, and a sleeve 11 is fitted onto the top of the perforated square tenon 12. A foldable oil reservoir 10 is threadedly connected to the bottom of a wrench head 3. A threaded head 13 is provided at the bottom of the wrench head 3. The foldable oil reservoir 10 is threaded to the wrench head 3 through the threaded head 13. A square groove 14 adapted to the perforated square tenon 12 is provided at the bottom of the sleeve 11. A first oil guide hole 15 is provided inside the sleeve 11, and a second oil guide hole 16 is provided inside the wrench head 3. The wrench head 3 is connected to the wrench head 3 by a sealing magnetic ring 1, a foldable oil pipe 2, a wrench head 3, a wrench handle 4, and a foldable... The oil reservoir 10, sleeve 11, and perforated square tenon 12 are configured such that, when using a wrench, a sleeve 11 compatible with the oil pan bolt can be installed on the perforated square tenon 12, allowing the sleeve 11 to mate with the wrench head 3. Then, the extendable foldable oil hose 2 can be extended, and the sealing magnet ring 1 can be attached to the oil pan bolt. The foldable oil reservoir 10 is then connected to the threaded head 13, fixing the foldable oil reservoir 10 to the bottom of the wrench head 3. During operation, the wrench handle 6 can be rotated, causing the wrench handle 6 to drive the wrench head 3 via the wrench shaft 4. Rotating the wrench head 3 causes the socket 11 to rotate, which in turn causes the oil pan bolt to rotate, allowing the oil pan bolt to be disassembled and assembled. During this process, the engine oil flows along the foldable oil pipe 2 and then through the second oil guide hole 16 inside the wrench head 3 into the foldable oil reservoir 10, thus collecting and storing the engine oil and preventing oil splashing that could contaminate the tool surface, work area, and operator's hands. In addition, after use, the foldable oil pipe 2 and the foldable oil reservoir 10 can be folded to their limit to reduce the overall space occupied and facilitate storage.
[0031] The torque adjustment knob 5 is located on the wrench handle 6. By adjusting the torque knob 5, the torque can be adjusted, and a fixed torque value can be preset to ensure that the operating torque meets the standard requirements.
[0032] Furthermore, a first wrench handle sleeve 7 is fitted onto the end of the wrench handle 6 away from the wrench body 4. A second wrench handle sleeve 8 is fitted onto the end of the first wrench handle sleeve 7 away from the wrench handle 6. A third wrench handle sleeve 9 is fitted onto the end of the second wrench handle sleeve 8 away from the first wrench handle sleeve 7. By setting the first wrench handle sleeve 7, the second wrench handle sleeve 8, and the third wrench handle sleeve 9, when the bolt tightness is too high, the first wrench handle sleeve 7, the second wrench handle sleeve 8, and the third wrench handle sleeve 9 can be adjusted to extend, change the handle length, adjust the force application point, and extend the lever arm to effectively increase the disassembly torque and reduce the difficulty of operation. In addition, after use, the first wrench handle sleeve 7, the second wrench handle sleeve 8, and the third wrench handle sleeve 9 can be adjusted to the folded state to reduce the overall space occupied and facilitate storage.
[0033] In practical use, the working principle of this utility model is as follows:
[0034] First, when using the wrench, a socket 11 adapted to the oil pan bolt can be installed on the perforated square tenon 12, so that the socket 11 mates with the wrench head 3. Then, the extendable and foldable oil hose 2 is extended. Then, the sealing magnetic ring 1 can be attached to the oil pan bolt, and the foldable oil reservoir 10 is connected to the threaded head 13, so that the foldable oil reservoir 10 is fixed at the bottom of the wrench head 3.
[0035] When the bolt tightness is too high, the first wrench handle sleeve 7, the second wrench handle sleeve 8, and the third wrench handle sleeve 9 can be adjusted to extend the handle length, adjust the force application point, and extend the lever arm to effectively increase the disassembly torque.
[0036] During operation, the wrench handle sleeve can be rotated, causing the wrench handle 6 to drive the wrench head 3 to rotate via the wrench body 4. The wrench head 3 then drives the socket 11 to rotate, which in turn drives the oil pan bolt to rotate. This allows for the removal and installation of the oil pan bolt. During this process, engine oil flows along the foldable oil pipe 2 and then through the second oil guide hole 16 inside the wrench head 3 into the foldable oil reservoir 10. This allows for the collection and storage of engine oil, preventing oil splashing and thus avoiding oil contamination of the tool surface, work area, and operator's hands.
[0037] After use, the foldable oil pipe 2 and the foldable oil tank 10 can be folded to their limit, and the first wrench handle sleeve 7, the second wrench handle sleeve 8 and the third wrench handle sleeve 9 can be adjusted to the folded state to reduce the overall space occupied and make it easier to store.
[0038] In summary, this special torque wrench for removing and installing oil drain bolts, through the design of a sealed magnetic ring 1, a foldable oil pipe 2, a wrench head 3, a wrench body 4, a wrench handle 6, a first wrench handle sleeve 7, a second wrench handle sleeve 8, a third wrench handle sleeve 9, a foldable oil reservoir 10, a socket 11, and a perforated square tenon 12, allows for an extended lever arm to effectively increase the disassembly torque when removing and installing bolts. It can also collect and store oil, preventing oil splashing and thus avoiding oil contamination of the tool surface, work area, and operator's hands. Furthermore, it can be folded after use, reducing the overall space occupied and facilitating storage.
[0039] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of this utility model.
Claims
1. A torque wrench for removing and installing oil drain bolts, comprising a sealing magnetic ring (1), a foldable oil pipe (2), a wrench head (3), a wrench handle (4), a torque adjustment knob (5), a wrench handle (6), a first wrench handle sleeve (7), a second wrench handle sleeve (8), a third wrench handle sleeve (9), a foldable oil reservoir (10), a socket (11), and a perforated square tenon (12), characterized in that: The sealing magnet ring (1) is fixedly installed on the upper end of the foldable oil pipe (2), the foldable oil pipe (2) is fixedly connected to the upper end of the wrench head (3), the wrench head (3) is connected to one end of the wrench body (4), the other end of the wrench body (4) is connected to the wrench handle (6), and the end of the wrench handle (6) away from the wrench body (4) is fitted with a first wrench handle sleeve (7); The collapsible oil tank (10) is threaded to the bottom of the wrench head (3).
2. The torque wrench for removing and assembling oil drain bolts according to claim 1, characterized in that: The torque adjustment knob (5) is located on the wrench handle (6).
3. The torque wrench for removing and assembling oil drain bolts according to claim 1, characterized in that: The first wrench handle sleeve (7) is fitted with a second wrench handle sleeve (8) at the end away from the wrench handle (6), and the second wrench handle sleeve (8) is fitted with a third wrench handle sleeve (9) at the end away from the first wrench handle sleeve (7).
4. The torque wrench for removing and assembling oil drain bolts according to claim 1, characterized in that: The top of the wrench head (3) is provided with a perforated square tenon (12), and the sleeve (11) is fitted onto the top of the perforated square tenon (12).
5. The torque wrench for removing and assembling oil drain bolts according to claim 1, characterized in that: The bottom of the sleeve (11) is provided with a square groove (14) that is compatible with the perforated square tenon (12).
6. The torque wrench for removing and assembling oil drain bolts according to claim 1, characterized in that: The sleeve (11) has a first oil guide hole (15) inside, and the wrench head (3) has a second oil guide hole (16) inside.
7. The torque wrench for removing and assembling oil drain bolts according to claim 1, characterized in that: The bottom of the wrench head (3) is provided with a threaded head (13), and the foldable oil tank (10) is threadedly connected to the wrench head (3) through the threaded head (13).