A dustproof and waterproof sleeve structure for a shock absorber piston rod

CN224665146UActive Publication Date: 2026-08-21YANGZHOU DAHUA SHOCK ABSORBING TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202521682048.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-08-08
Publication Date
2026-08-21
Estimated Expiration
2035-08-08

AI Technical Summary

Technical Problem

[0003]现有减震器普遍缺乏有效的防尘防水防护结构,活塞杆长期直接暴露于外部环境,导致灰尘、泥沙、雨水等污染物极易附着并侵入减震器内部

Benefits of technology

[0014]1、该减震器活塞杆防尘防水套结构,通过设置的防护机构,防护套筒一和防护套筒二配合对汽车减震器主体进行防护,使外部环境中的灰尘和水分无法与汽车减震器主体接触,提高了汽车减震器主体的使用寿命;

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to shock absorber technical field, and disclose a shock absorber piston rod dustproof waterproof cover structure, including car shock absorber main part, the both sides of car shock absorber main part upper and lower are fixedly connected with the connecting frame, and the outer ring of car shock absorber main part is provided with the protection mechanism, and the both sides of protection mechanism upper and lower are provided with the fixed mechanism in, and the protection mechanism includes protection subassembly, limiting component and clamping component, and protection subassembly sets up in the outer ring of car shock absorber main part, and limiting component sets up in protection subassembly, and clamping component sets up in the outer ring of connecting frame. The shock absorber piston rod dustproof waterproof cover structure, through setting up the protection mechanism, the sleeve ring is fixed in the outer ring of the both sides of connecting frame after, and protection sleeve one and protection sleeve two cooperation carry out the protection to car shock absorber main part, make car shock absorber main part with external space insulate, and the mutual sliding between protection sleeve one and protection sleeve two can contract and expand along with the telescopic of car shock absorber main part, and the good adaptability.
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Description

Technical Field

[0001] This utility model relates to the field of shock absorber technology, specifically to a dustproof and waterproof sleeve structure for a shock absorber piston rod. Background Technology

[0002] Shock absorbers are used to suppress the oscillations caused by the rebound of springs after absorbing shocks, as well as impacts from the road surface. They are widely used in automobiles to accelerate the attenuation of vibrations in the chassis and body, thereby improving the ride comfort of the vehicle. When driving over uneven roads, although the shock-absorbing springs can filter out road vibrations, the springs themselves will still have reciprocating motion, and shock absorbers are used to suppress this spring bounce.

[0003] Existing shock absorbers generally lack effective dust and water protection structures, leaving the piston rod directly exposed to the external environment for extended periods. This makes it easy for contaminants such as dust, mud, and rainwater to adhere to and penetrate the shock absorber's interior. During vehicle operation, dust particles kicked up from the road surface can enter the sealing area with the reciprocating motion of the piston rod, causing accelerated wear of the seals, oil contamination, and consequently, reduced damping force and abnormal noises. Rainwater or moisture intrusion can lead to rust on the piston rod surface, aging and failure of the sealing rubber components, and oil leaks, severely impacting the shock absorber's lifespan and performance stability. Utility Model Content

[0004] The purpose of this utility model is to provide a dustproof and waterproof sleeve structure for a shock absorber piston rod, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a dustproof and waterproof sleeve structure for a shock absorber piston rod, comprising a car shock absorber body, with connecting frames fixedly connected to the upper and lower sides of the car shock absorber body, a protective mechanism provided on the outer ring of the car shock absorber body, and fixing mechanisms provided on the upper and lower sides of the protective mechanism.

[0006] The protective mechanism includes a protective component, a limiting component, and a locking component. The protective component is disposed on the outer ring of the vehicle shock absorber body, the limiting component is disposed inside the protective component, and the locking component is disposed on the outer ring of the connecting frame.

[0007] The fixing mechanism includes a fixing component and a locking component. The fixing component is disposed inside the upper and lower sides of the protective component, and the locking component is disposed outside the fixing component.

[0008] Preferably, the protective component includes a collar, which is sleeved on the outer ring of the connecting frame. A protective sleeve one is fixedly connected to the bottom of the upper collar, and a protective sleeve two is slidably connected to the inner ring of the protective sleeve one. The protective sleeve two is fixedly connected to the top of the lower collar, and the protective sleeve one and the protective sleeve two are sleeved on the outer ring of the vehicle shock absorber body.

[0009] Preferably, the limiting component includes a limiting slider one, which is fixedly connected to the bottom of the inner ring of the protective sleeve one, and slidably connected to the outer ring of the protective sleeve two. A limiting slider two is provided on the inner side of the limiting slider one, which is fixedly connected to the top of the outer ring of the protective sleeve two, and slidably connected to the inner ring of the protective sleeve one.

[0010] Preferably, the positioning assembly includes a triangular plate, which is fixedly connected to the outer ring of the connecting frame. A sleeve plate is snapped onto the outer side of the triangular plate, and the sleeve plate is snapped onto the inner side of the outer ring. An insert plate is fixedly connected to the outer side of the sleeve plate, and the insert plate is snapped onto the inner side of the outer ring of the ring.

[0011] Preferably, the fixing component includes an embedded screw cap, which is threaded to the inner ring of the collar, and the inner ring of the embedded screw cap is rotatably connected to a rotating ring, which is sleeved on the outer ring of the connecting frame.

[0012] Preferably, the locking assembly includes a fixing screw cylinder, which is fixedly connected to the top of the rotating ring. A reinforcing ring is fixedly connected to the outer ring of the fixing screw cylinder, and the reinforcing ring is fixedly connected to the top of the rotating ring. Reinforcing fins are fixedly connected to the inner and outer sides of the reinforcing ring, and the reinforcing fins are fixedly connected to the outer side of the rotating ring. A bolt is threadedly connected to the inner ring of the fixing screw cylinder, and the bolt is sleeved inside the triangular plate and the sleeve plate.

[0013] Compared with the prior art, this utility model provides a dustproof and waterproof sleeve structure for a shock absorber piston rod, which has the following beneficial effects:

[0014] 1. The shock absorber piston rod dustproof and waterproof sleeve structure, through the set protective mechanism, the protective sleeve one and the protective sleeve two work together to protect the main body of the car shock absorber, so that dust and moisture in the external environment cannot come into contact with the main body of the car shock absorber, thereby improving the service life of the main body of the car shock absorber.

[0015] After the collar is fixed to the outer ring of the connecting frame on the upper and lower sides, the protective sleeve one and the protective sleeve two work together to protect the main body of the car shock absorber, so that the main body of the car shock absorber is isolated from the external space. At the same time, the protective sleeve one and the protective sleeve two slide against each other and can extend and retract with the extension and retraction of the main body of the car shock absorber, with good adaptability.

[0016] 2. The dustproof and waterproof sleeve structure of the shock absorber piston rod, through the setting of the fixing mechanism, the embedded screw cap is threaded to the inner ring of the collar, and the positions of the upper and lower triangular plates and sleeve plates are locked by bolts, fixing the upper and lower collars and connecting brackets. When the device is in use, the protective sleeve one and the protective sleeve two can extend and retract with the extension and retraction of the main body of the car shock absorber. The operator only needs to rotate the bolts and the embedded screw cap to complete the disassembly and assembly of the device, which is simple to operate and convenient for the operator to use. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a front view of the present utility model;

[0019] Figure 2 This is a front sectional view of the present invention;

[0020] Figure 3 This is a partial structural diagram of the protective mechanism;

[0021] Figure 4 This is a partial structural separation diagram of the present invention;

[0022] Figure 5 for Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0023] Figure 6 This is a sectional view of the fixed mechanism.

[0024] In the diagram: 1. Protective mechanism; 11. Protective component; 1101. Collar; 1102. Protective sleeve one; 1103. Protective sleeve two; 12. Limiting component; 1201. Limiting slider one; 1202. Limiting slider two; 13. Locking component; 1301. Triangular plate; 1302. Sleeve plate; 1303. Insert plate; 2. Fixing mechanism; 21. Fixing component; 2101. Embedded screw cap; 2102. Rotary ring; 22. Locking component; 2201. Fixing screw; 2202. Reinforcing ring; 2203. Reinforcing fin; 2204. Bolt; 3. Automotive shock absorber body; 31. Connecting frame. Detailed Implementation

[0025] 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.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] This utility model provides a technical solution:

[0028] Example 1

[0029] Combination Figures 1 to 5 A dustproof and waterproof sleeve structure for a shock absorber piston rod includes a car shock absorber body 3, with connecting brackets 31 fixedly connected to the upper and lower sides of the car shock absorber body 3, a protective mechanism 1 provided on the outer ring of the car shock absorber body 3, and fixing mechanisms 2 provided on the upper and lower sides of the protective mechanism 1.

[0030] The protective mechanism 1 includes a protective component 11, a limiting component 12, and a locking component 13. The protective component 11 is located on the outer ring of the vehicle shock absorber body 3, the limiting component 12 is located inside the protective component 11, and the locking component 13 is located on the outer ring of the connecting frame 31.

[0031] The protective assembly 11 includes a collar 1101, which is sleeved on the outer ring of the connecting bracket 31. A protective sleeve 1102 is fixedly connected to the bottom of the upper collar 1101. A protective sleeve 2 1103 is slidably connected to the inner ring of the protective sleeve 1102. The protective sleeve 2 1103 is fixedly connected to the top of the lower collar 1101. The protective sleeves 1102 and 1103 are sleeved on the outer ring of the vehicle shock absorber body 3. The limiting assembly 12 includes a limiting slider 1201, which is fixedly connected to the bottom of the inner ring of the protective sleeve 1102. The limiting slider 1201 is slidably connected to the outer ring of the connecting bracket 31. Inside the outer ring of the second protective sleeve 1103, the inner side of the first limiting slider 1201 is provided with a second limiting slider 1202. The second limiting slider 1202 is fixedly connected to the top of the outer ring of the second protective sleeve 1103 and slidably connected to the inner ring of the first protective sleeve 1102. The locking assembly 13 includes a triangular plate 1301, which is fixedly connected to the outer ring of the connecting frame 31. A sleeve plate 1302 is locked on the outside of the triangular plate 1301 and locked on the inside of the outside of the collar 1101. An insert plate 1303 is fixedly connected on the outside of the sleeve plate 1302 and locked on the inside of the outer ring of the collar 1101.

[0032] Furthermore: After the collar 1101 is fixed to the outer ring of the connecting frame 31 on both the upper and lower sides, the protective sleeve 1102 and the protective sleeve 2103 work together to protect the main body 3 of the car shock absorber, thus isolating the main body 3 of the car shock absorber from the external space. At the same time, the protective sleeve 1102 and the protective sleeve 2103 slide against each other and can extend and retract with the extension and retraction of the main body 3 of the car shock absorber, thus having good adaptability.

[0033] Example 2

[0034] See Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 6 Furthermore, based on Embodiment 1, the fixing mechanism 2 includes a fixing component 21 and a locking component 22. The fixing component 21 is disposed on the upper and lower sides of the protective component 11, and the locking component 22 is disposed on the outside of the fixing component 21.

[0035] The fixing component 21 includes an embedded screw cap 2101, which is threaded to the inner ring of the collar 1101. The inner ring of the embedded screw cap 2101 is rotatably connected to a rotating ring 2102, which is sleeved on the outer ring of the connecting bracket 31. The locking component 22 includes a fixing screw cylinder 2201, which is fixedly connected to the top of the rotating ring 2102. The outer ring of the fixing screw cylinder 2201 is fixedly connected to a reinforcing ring 2202, which is fixedly connected to the top of the rotating ring 2102. Reinforcing fins 2203 are fixedly connected to the inner and outer sides of the reinforcing ring 2202, and the reinforcing fins 2203 are fixedly connected to the outer side of the rotating ring 2102. The inner ring of the fixing screw cylinder 2201 is threadedly connected to a bolt 2204, which is sleeved on the triangular plate 1301 and the sleeve plate 1302.

[0036] Furthermore: After the embedded screw cap 2101 is threadedly connected to the inner ring of the collar 1101, the positions of the upper and lower triangular plates 1301 and the sleeve plate 1302 are locked by the bolt 2204, which fixes the collar 1101 and the connecting frame 31 on the upper and lower sides. This allows the protective sleeve one 1102 and the protective sleeve two 1103 to extend and retract with the extension and retraction of the car shock absorber body 3 when the device is in use. The operator only needs to rotate the bolt 2204 and the embedded screw cap 2101 to complete the disassembly and assembly of the device. The operation is simple and convenient for the operator to use.

[0037] In actual operation, when this device is used and the protective sleeve 1102 and protective sleeve 2103 need to be installed, the operator first puts the protective sleeve 1102 and protective sleeve 2103 onto the outer ring of the car shock absorber body 3, so that the upper and lower collars 1101 are aligned with the upper and lower connecting brackets 31 respectively. Then, the operator puts the embedded screw cap 2101 onto the outer ring of the connecting bracket 31, so that the inner side of the embedded screw cap 2101 contacts the outer side of the collar 1101. Then, the operator rotates the embedded screw cap 2101, and the embedded screw cap 2101 rotates inward around the inner ring of the collar 1101, and the embedded screw... The cover 2101 moves inward, causing the rotating ring 2102 to move inward until the embedded screw cover 2101 can no longer rotate. Then, the worker inserts the sleeve 1302 into the outer side of the collar 1101, so that the sleeve 1302 is engaged with the outer side of the triangular plate 1301. Then, the worker rotates the rotating ring 2102 to align the fixing screw 2201 with the sleeve 1302. Then, the worker rotates the bolt 2204 to install it into the inner ring of the fixing screw 2201. At this time, the bolt 2204 is inserted into the triangular plate 1301 and the sleeve 1302. At this time, the installation of the first protective sleeve 1102 and the second protective sleeve 1103 is completed.

[0038] When the car shock absorber body 3 is performing shock absorption, the protective sleeve 1102 and the protective sleeve 2103 slide relative to each other and extend and retract with the car shock absorber body 3, always keeping the car shock absorber body 3 closed, thus completing the protective treatment of the car shock absorber body 3.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only 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.

Claims

1. A dustproof and waterproof sleeve structure for a shock absorber piston rod, comprising a main body (3) of an automotive shock absorber, characterized in that: The car shock absorber body (3) is fixedly connected to the upper and lower sides with connecting brackets (31), the car shock absorber body (3) is provided with a protective mechanism (1) on the outer ring, and the protective mechanism (1) is provided with a fixing mechanism (2) on the upper and lower sides. The protective mechanism (1) includes a protective component (11), a limiting component (12) and a locking component (13). The protective component (11) is disposed on the outer ring of the car shock absorber body (3), the limiting component (12) is disposed inside the protective component (11), and the locking component (13) is disposed on the outer ring of the connecting frame (31). The fixing mechanism (2) includes a fixing component (21) and a locking component (22). The fixing component (21) is disposed inside the upper and lower sides of the protective component (11), and the locking component (22) is disposed outside the fixing component (21).

2. The dustproof and waterproof sleeve structure for a shock absorber piston rod according to claim 1, characterized in that: The protective component (11) includes a collar (1101), which is sleeved on the outer ring of the connecting frame (31). The bottom of the upper collar (1101) is fixedly connected to a protective sleeve one (1102). The inner ring of the protective sleeve one (1102) is slidably connected to a protective sleeve two (1103). The protective sleeve two (1103) is fixedly connected to the top of the lower collar (1101). The protective sleeve one (1102) and the protective sleeve two (1103) are sleeved on the outer ring of the car shock absorber body (3).

3. The dustproof and waterproof sleeve structure for a shock absorber piston rod according to claim 1, characterized in that: The limiting component (12) includes a limiting slider one (1201), which is fixedly connected to the bottom of the inner ring of the protective sleeve one (1102). The limiting slider one (1201) is slidably connected to the inner ring of the protective sleeve two (1103). A limiting slider two (1202) is provided on the inner side of the limiting slider one (1201). The limiting slider two (1202) is fixedly connected to the top of the outer ring of the protective sleeve two (1103). The limiting slider two (1202) is slidably connected to the inner ring of the protective sleeve one (1102).

4. The dustproof and waterproof sleeve structure for a shock absorber piston rod according to claim 1, characterized in that: The positioning assembly (13) includes a triangular plate (1301), which is fixedly connected to the outer ring of the connecting frame (31). A sleeve plate (1302) is snapped onto the outside of the triangular plate (1301), which is snapped onto the inside of the outside of the collar (1101). An insert plate (1303) is fixedly connected to the outside of the sleeve plate (1302), which is snapped onto the inside of the outer ring of the collar (1101).

5. The dustproof and waterproof sleeve structure for a shock absorber piston rod according to claim 1, characterized in that: The fixing component (21) includes an embedded screw cap (2101), which is threaded to the inner ring of the collar (1101). The inner ring of the embedded screw cap (2101) is rotatably connected to a rotating ring (2102), which is sleeved on the outer ring of the connecting frame (31).

6. The dustproof and waterproof sleeve structure for a shock absorber piston rod according to claim 1, characterized in that: The locking assembly (22) includes a fixing screw (2201), which is fixedly connected to the top of the rotating ring (2102). A reinforcing ring (2202) is fixedly connected to the outer ring of the fixing screw (2201), which is fixedly connected to the top of the rotating ring (2102). Reinforcing fins (2203) are fixedly connected to the inner and outer sides of the reinforcing ring (2202).

7. The dustproof and waterproof sleeve structure for a shock absorber piston rod according to claim 6, characterized in that: The reinforcing fin (2203) is fixedly connected to the outside of the swivel (2102), and the inner ring of the fixing screw (2201) is threaded with a bolt (2204), which is sleeved in the triangular plate (1301) and the sleeve plate (1302).