Special tool for disassembling and assembling oil storage cylinder nut of shock absorber

By using a adjustable wrench with a rotation limiting mechanism and a magnetic plate design, the problem of loosening existing wrenches is solved, enabling stable installation and removal of the shock absorber reservoir nut, and improving operational efficiency and convenience.

CN223617619UActive Publication Date: 2025-12-02ENG UNIV OF THE CHINESE PEOPLES ARMED POLICE FORCE
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Patent Information

Application Number
CN202423269369.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-30
Publication Date
2025-12-02
Estimated Expiration
2034-12-30

AI Technical Summary

Technical Problem

Existing adjustable wrenches are prone to loosening when adjusting the worm gear, causing changes in the wrench opening position, making them inconvenient to use, and affecting the efficiency of disassembling and assembling the shock absorber reservoir nut.

Method used

An adjustable wrench with a rotation limiting mechanism is designed. The worm gear rotation is limited by gear meshing and the friction of the rubber strip. The movable magnetic plate and the fixed magnetic plate prevent the sleeve from sliding. The position of the movable jaw can be adjusted, and the length of the rod can be adjusted to meet different angle requirements.

Benefits of technology

This achieves stable fixation of the movable jaw position, preventing loosening and improving the efficiency of disassembly and assembly of the shock absorber reservoir nut, as well as its ease of use.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a shock absorber oil storage cylinder nut disassembly and assembly special tool which comprises a bottom plate, a plurality of supporting rods are fixed to the top of the bottom plate, a fixing plate is fixed to the tops of the supporting rods, a vertically-through penetrating hole is formed in the top of the fixing plate, and two fixing blocks are fixed to the top of the fixing plate. A hydraulic rod is fixed in the fixing block, a shock absorber oil storage cylinder is placed in the penetrating hole, then the hydraulic rod is started, the hydraulic rod drives the clamping plate to move to clamp the shock absorber oil storage cylinder, then the movable wrench is taken up, the rotating block is rotated to enable a worm of the movable wrench to rotate, and the worm rotates to adjust the position of the movable jaw. After adjustment is finished, the spring pushes the moving plate and the rubber strip to move, the rubber strip makes contact with the rubber pad, friction force is increased, the rotating block is prevented from rotating, and therefore the rotating rod, the gear and a worm of the movable wrench are limited to rotate, and the adjusted movable jaw cannot move.
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Description

Technical Field

[0001] This utility model relates to the field of nut disassembly and assembly technology, specifically a special tool for disassembling and assembling the oil reservoir nut of a shock absorber. Background Technology

[0002] The hydraulic reservoir is a crucial component of the shock absorber. Its primary function is to store hydraulic oil, ensuring the shock absorber functions properly during both compression and extension strokes. The reservoir, typically located at the bottom of the shock absorber, is a container that stores a specific amount of hydraulic oil. During the compression stroke, the hydraulic oil in the reservoir flows through the flow valve and compression valve into the working cylinder, helping the shock absorber absorb vibration energy. During the extension stroke, the hydraulic oil flows back from the working cylinder to the reservoir through the extension valve and compensation valve, thus achieving the damping effect. To ensure the proper functioning of the shock absorber, the reservoir requires regular inspection and maintenance.

[0003] Inspection and maintenance require the removal of the shock absorber reservoir. The components of the shock absorber are usually connected by bolts and nuts. The bolts and nuts of the transmission are removed by wrench. The wrench has an adjustable wrench, which can adjust the size of the wrench according to the size of the existing bolts and nuts. However, the worm gear of the existing adjustable wrench is relatively loose. After the size of the wrench is adjusted, the worm gear will rotate during use, which will cause the movable jaw to shift and the size of the wrench to change. It needs to be readjusted, which is very inconvenient to use. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a special tool for disassembling and assembling the oil reservoir nut of a shock absorber, thus solving the problems mentioned in the background section.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a special tool for disassembling and assembling the shock absorber oil reservoir nut, including an adjustable wrench, the adjustable wrench including a head and a rod, the head and the rod being rotatably connected, the head having a rotation limiting mechanism inside, the rotation limiting mechanism including two gears, a rotating rod being rotatably connected inside the adjustable wrench, the two gears being respectively fixed to the outer wall of the worm gear of the adjustable wrench and the outer wall of the rotating rod, the two gears being meshed together;

[0006] The adjustable wrench has a rotating block inside, and multiple movable grooves are opened on the outer side wall of the rotating block. Multiple springs are fixed inside the movable grooves. A movable plate is fixed to the other end of the spring. A rubber strip is fixed to the other side of the movable plate. A rubber pad is fixed inside the adjustable wrench on the outside of the rotating block. The rotating rod passes through the rotating block and is fixedly connected to the rotating block.

[0007] Preferably, the rotating block has a rotating groove inside, a rotating ring is rotatably connected inside the rotating groove, and a plurality of connecting rods are rotatably connected to the outer side wall of the rotating ring. The other end of the connecting rods is rotatably connected to the side of the moving plate away from the rubber strip.

[0008] Preferably, the rod portion includes an outer rod, and an inner rod is slidably connected inside the outer rod.

[0009] Preferably, a movable sleeve is slidably connected to the outer side wall of the outer rod, two movable magnetic plates are fixed on the right side of the movable sleeve, and fixed magnetic plates are fixed on the upper and lower sides of the inner side of the outer rod.

[0010] Preferably, the movable magnetic plate and the fixed magnetic plate attract each other.

[0011] Preferably, a lever is inserted into the interior of the inner rod.

[0012] Beneficial effects

[0013] This utility model provides a special tool for disassembling and assembling the oil reservoir nut of a shock absorber. Compared with the prior art, it has the following advantages:

[0014] 1. This special tool for disassembling and assembling the shock absorber reservoir nut has a rotation-limiting mechanism. By picking up the adjustable wrench and rotating the rotating block, the worm gear of the adjustable wrench rotates. The rotation of the worm gear adjusts the position of the movable jaws to match the size of the shock absorber reservoir nut to be disassembled or assembled. After adjustment, the spring pushes the moving plate and rubber strip to move. The rubber strip contacts the rubber pad, increasing friction and preventing the rotating block from rotating, thus limiting the rotation of the rotating rod, gear, and worm gear of the adjustable wrench. Therefore, the adjusted movable jaws will not move.

[0015] 2. This special tool for disassembling and assembling the shock absorber oil reservoir nut consists of a rod, a movable sleeve, a movable magnetic plate, a fixed magnetic plate, and a lever. The movable sleeve restricts the rotation of the head. When the wrench cannot rotate horizontally, the movable sleeve is moved to the right. The movable magnetic plate and the fixed magnetic plate are always attracted to each other to prevent the movable sleeve from slipping. Then, adjust the angle between the head and the rod according to the angle that is convenient for rotation. When the angle between the head and the rod is close to 90 degrees, the lever can be inserted into the inner rod to facilitate rotation. The inner rod can also be moved to adjust the length of the rod for convenient use. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the connection structure between the head and the rod of this utility model;

[0018] Figure 3 This is a schematic diagram of the gear connection structure in this utility model;

[0019] Figure 4 This is a cross-sectional view of the transfer block of this utility model.

[0020] In the diagram: 1. Movable magnetic plate; 2. Head; 3. Movable sleeve; 4. Fixed magnetic plate; 5. Rod; 6. Inner rod; 7. Actuating rod; 8. Rotary ring; 9. Movable plate; 10. Spring; 11. Rubber strip; 12. Adjustable wrench; 13. Outer rod; 14. Movable groove; 15. Rotating groove; 16. Rotating rod; 17. Connecting rod; 18. Rotation limiting mechanism; 19. Gear; 20. Rotating block; 21. Rubber pad. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4 This utility model provides a technical solution: a special tool for disassembling and assembling the oil reservoir nut of a shock absorber, including an adjustable wrench 12. The adjustable wrench 12 includes a head 2 and a rod 5, which are rotatably connected. The head 2 has a rotation limiting mechanism 18 inside, which includes two gears 19. A rotating rod 16 is rotatably connected inside the adjustable wrench 12. The two gears 19 are respectively fixed to the outer wall of the worm gear of the adjustable wrench 12 and the outer wall of the rotating rod 16, and the two gears 19 are meshed. The adjustable wrench 12 has a rotating block 20 inside, and the outer wall of the rotating block 20 has multiple movable grooves 14. Multiple springs 10 are fixed inside the movable grooves 14. The other end of 10 is fixed to the movable plate 9, and the other side of the movable plate 9 is fixed to the rubber strip 11. The inside of the adjustable wrench 12 is fixed to the outside of the rotating block 20 with a rubber pad 21. The rotating rod 16 passes through the rotating block 20 and is fixedly connected to the rotating block 20. The rotation limiting mechanism 18 can prevent the position of the movable jaw of the adjusted adjustable wrench 12 from changing. The inside of the rotating block 20 is provided with a rotating groove 15. The inside of the rotating groove 15 is rotatably connected to the rotating ring 8. The outer wall of the rotating ring 8 is rotatably connected to multiple connecting rods 17. The other end of the connecting rod 17 is rotatably connected to the side of the movable plate 9 away from the rubber strip 11, so that multiple rubber strips 11 can be separated from the rubber pad 21 together.

[0023] Furthermore, the rod 5 includes an outer rod 13, with an inner rod 6 slidably connected inside the outer rod 13, allowing adjustment of the length of the rod 5. A movable sleeve 3 is slidably connected to the outer side wall of the outer rod 13, with two movable magnetic plates 1 fixed on the right side of the movable sleeve 3. Fixed magnetic plates 4 are fixed at the top and bottom of the inner side of the outer rod 13, preventing the head 2 and the rod 5 from rotating. The movable magnetic plates 1 and the fixed magnetic plates 4 attract each other, preventing the movable sleeve 3 from moving. A lever 7 is inserted inside the inner rod 6, allowing rotation when the head 2 and the rod 5 are at a 90-degree angle.

[0024] During operation, pick up the adjustable wrench 12 and press the rubber strip 11. The rubber strip 11 moves the moving plate 9, which in turn pushes the connecting rod 17. The connecting rod 17 rotates the rotating ring 8, which in turn rotates the other connecting rods 17. These other connecting rods 17 then move the other moving plates 9 and rubber strips 11, separating the rubber strip 11 from the rubber pad 21. Then, rotate the rotating block 20, which rotates the rotating rod 16. The rotating rod 16, through gear 19, causes the worm gear of the adjustable wrench 12 to rotate. The rotation of the worm gear adjusts the position of the adjustable jaws to match the size of the shock absorber reservoir nut that needs to be disassembled or reassembled. After adjustment, loosen the rubber strip 11 and spring 10. Push the movable plate 9 and rubber strip 11 to move them. Rubber strip 11 contacts rubber pad 21, increasing friction and preventing the rotating block 20 from rotating. This restricts the rotation of the rotating rod 16, gear 19, and worm gear of the adjustable wrench 12. The adjusted movable jaws will not move. When the wrench is difficult to rotate horizontally, move the movable sleeve 3 to the right. The movable magnetic plate 1 and the fixed magnetic plate 4 will always attract each other to prevent the movable sleeve 3 from sliding. Then, adjust the angle of the head 2 and the rod 5 according to the angle that is convenient to rotate. When the angle of the head 2 and the rod 5 is close to 90 degrees, the lever 7 can be inserted into the inner rod 6 for easy rotation. The inner rod 6 can also be moved to adjust the length of the rod 5 for easy use.

[0025] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0026] 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, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A special tool for disassembling and assembling the oil reservoir nut of a shock absorber, including an adjustable wrench (12), characterized in that: The movable wrench (12) includes a head (2) and a rod (5), which are rotatably connected. The head (2) is provided with a rotation limiting mechanism (18), which includes two gears (19). A rotating rod (16) is rotatably connected inside the movable wrench (12). The two gears (19) are respectively fixed to the outer wall of the worm gear of the movable wrench (12) and the outer wall of the rotating rod (16), and the two gears (19) are meshed together. The movable wrench (12) has a rotating block (20) inside. The outer wall of the rotating block (20) has multiple movable grooves (14). Multiple springs (10) are fixed inside the movable grooves (14). A moving plate (9) is fixed to the other end of the spring (10). A rubber strip (11) is fixed to the other side of the moving plate (9). A rubber pad (21) is fixed inside the movable wrench (12) on the outside of the rotating block (20). The rotating rod (16) passes through the rotating block (20) and is fixedly connected to the rotating block (20).

2. The special tool for disassembling and assembling the shock absorber oil reservoir nut according to claim 1, characterized in that: The rotating block (20) has a rotating groove (15) inside, and a rotating ring (8) is rotatably connected inside the rotating groove (15). Multiple connecting rods (17) are rotatably connected to the outer wall of the rotating ring (8). The other end of the connecting rod (17) is rotatably connected to the side of the moving plate (9) away from the rubber strip (11).

3. The special tool for disassembling and assembling the shock absorber oil reservoir nut according to claim 2, characterized in that: The rod (5) includes an outer rod (13), and an inner rod (6) is slidably connected inside the outer rod (13).

4. The special tool for disassembling and assembling the shock absorber oil reservoir nut according to claim 3, characterized in that: The outer wall of the outer rod (13) is slidably connected to a movable sleeve (3), and two movable magnetic plates (1) are fixed on the right side of the movable sleeve (3). Fixed magnetic plates (4) are fixed on the upper and lower sides of the inner side of the outer rod (13).

5. The special tool for disassembling and assembling the shock absorber oil reservoir nut according to claim 4, characterized in that: The movable magnetic plate (1) and the fixed magnetic plate (4) attract each other.

6. The special tool for disassembling and assembling the shock absorber oil reservoir nut according to claim 5, characterized in that: A lever (7) is inserted inside the inner rod (6).