A shock absorber piston shaft
Patent Information
- Application Number
- CN202522051635.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-24
- Publication Date
- 2026-09-22
- Estimated Expiration
- 2035-09-24
AI Technical Summary
[0003]传统减震器的防尘罩设计往往较为简单,无法有效防止灰尘、杂质和水分进入缸体内部
本实用新型通过防尘罩的设计能够有效防止灰尘、杂质等进入减震器内部,保护活塞轴本体及相关部件免受污染,从而延长减震器的使用寿命,提高其工作可靠性;
Smart Images

Figure CN224786262U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of piston shaft technology, and in particular to a shock absorber piston shaft. Background Technology
[0002] Shock absorbers are indispensable components in vehicles and other mechanical equipment. Their main function is to absorb and buffer vibration energy, reduce the impact of vibration on the vehicle and passengers, and improve driving comfort and stability. The working principle of a shock absorber is that the reciprocating motion of a piston in a cylinder causes the oil in the cylinder to generate damping force through a throttling orifice, thereby dissipating vibration energy.
[0003] Traditional shock absorber dust covers are often simply designed and cannot effectively prevent dust, impurities, and moisture from entering the cylinder. These impurities contaminate the damping oil, increase wear on the piston and cylinder, and lead to decreased shock absorber performance or even malfunction. Utility Model Content
[0004] To solve the above-mentioned technical problems, this utility model provides a shock absorber piston shaft.
[0005] This utility model is achieved using the following technical solution: a shock absorber piston shaft, including a dust cover, a connecting block fixedly connected to the top of the dust cover, an anti-slip texture on the top of the connecting block, an upper connecting head fixedly connected to the top of the connecting block, a guide seat fixedly connected to the bottom of the dust cover, a guide groove on the surface of the guide seat, a plurality of guide grooves, and a damping spring fixedly connected to the bottom of the guide seat, the damping spring being carbon spring steel.
[0006] The above technical solutions effectively prevent dust and impurities from entering the shock absorber, protecting the piston shaft and related components from contamination, reducing wear and malfunctions caused by dust, and extending the shock absorber's service life. They provide a good sealing environment inside the shock absorber, preventing leakage of lubricating oil and other liquids, while also preventing external moisture from entering and avoiding rust or corrosion. They also provide some protection to the shock absorber's exterior, preventing scratches and collisions from damaging internal components; the anti-slip texture increases friction, ensuring a tighter connection between the connecting block and external components, preventing loosening due to vibration during vehicle operation and improving the shock absorber's reliability. During installation and use, the anti-slip texture effectively prevents the connecting block from slipping, ensuring installation accuracy and stability; multiple guide grooves on the guide seat surface provide a precise guide path for the piston shaft, ensuring the piston shaft maintains a straight line during movement, reducing offset and wear, and improving the shock absorber's working accuracy and efficiency. The shock-absorbing spring is made of carbon spring steel, which has high elastic strength and toughness. It can quickly deform elastically when subjected to external impact, absorbing and buffering vibration energy, thereby effectively reducing vibration amplitude and improving ride comfort. Carbon spring steel springs also have good fatigue resistance, maintaining stable elastic characteristics over long-term use and extending the service life of the shock absorber. After absorbing vibration energy, the shock-absorbing spring can quickly return to its original shape, ensuring the shock absorber can continue to work effectively and adapt to frequent vibrations and impacts.
[0007] As a further improvement to the above solution, a connecting sleeve is fixedly connected to the bottom end of the guide seat.
[0008] Through the above technical solution, the connecting sleeve further connects the guide seat and the piston shaft body, enhancing the structural stability of the entire shock absorber and ensuring that the piston shaft body will not loosen during movement. The internal structure of the connecting sleeve can further assist in guiding the piston shaft body, reducing the shaking of the piston shaft body during movement, and improving the working accuracy of the shock absorber.
[0009] As a further improvement to the above solution, a piston shaft body is installed inside the dust cover, and the piston shaft body passes through the guide seat and extends into the interior of the connecting sleeve.
[0010] Through the above technical solution, the piston shaft body is the core component of the shock absorber, running through the entire shock absorber and undertaking the main motion and damping functions. With the assistance of the guide groove of the guide seat and the connecting sleeve, the piston shaft body can move up and down precisely, reducing offset and wear, and improving the working efficiency and life of the shock absorber.
[0011] As a further improvement to the above solution, a connecting chassis is fixedly connected to the bottom end of the piston shaft body, and a bayonet is provided at the front end of the connecting chassis.
[0012] Through the above technical solution, the bayonet design at the front end of the connecting chassis allows the shock absorber piston shaft to be easily connected and fixed with other components, simplifying the installation process and improving installation efficiency. The connecting chassis, as the bottom support component of the piston shaft body, provides a stable structural foundation and enhances the structural strength and stability of the entire shock absorber.
[0013] As a further improvement to the above solution, a mounting plate is fixedly connected to the bottom of the connecting chassis, a slot is provided on the surface of the mounting plate, and a lower connector is fixedly connected to the bottom of the mounting plate.
[0014] Through the above technical solution, the slot design on the surface of the mounting plate allows the shock absorber piston shaft to be easily installed on vehicles or mechanical equipment, simplifying the installation process and improving installation efficiency. The precise design of the slot can ensure that the shock absorber is accurately positioned during installation, reduce installation errors, and improve the working accuracy of the shock absorber.
[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model, through the design of a dust cover, can effectively prevent dust, impurities, etc. from entering the inside of the shock absorber, protect the piston shaft body and related components from contamination, thereby extending the service life of the shock absorber and improving its operational reliability. The shock-absorbing spring is made of carbon spring steel, which has high elastic strength and toughness. It can quickly generate elastic deformation when subjected to external impact, absorb and buffer vibration energy, thereby effectively reducing vibration amplitude and improving ride comfort. This invention utilizes the anti-slip texture on the top of the connecting block to increase friction, making the shock absorber piston shaft more secure when connected to other components, preventing loosening due to vibration and ensuring the stable operation of the entire shock absorption system. The multiple guide grooves on the guide seat surface provide precise guidance for the piston shaft body, ensuring it maintains the correct direction during movement, reducing offset and wear, and improving the working accuracy and efficiency of the shock absorber. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the bottom structure of this utility model; Figure 3 This is a schematic diagram of the connecting sleeve structure of this utility model; Figure 4 This is a schematic diagram of the card slot structure of this utility model.
[0017] Explanation of key symbols: 1. Dust cover; 2. Connecting block; 3. Anti-slip texture; 4. Upper connector; 5. Guide seat; 6. Shock-absorbing spring; 7. Connecting sleeve; 8. Piston shaft body; 9. Connecting chassis; 10. Mounting plate; 11. Slot; 12. Lower connector. Detailed Implementation
[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.
[0019] Example: Please combine Figure 1-4This embodiment of a shock absorber piston shaft includes a dust cover 1, a connecting block 2 fixedly connected to the top of the dust cover 1, an anti-slip texture 3 on the top of the connecting block 2, and an upper connector 4 fixedly connected to the top of the connecting block 2. The design of the upper connector 4 allows the shock absorber piston shaft to be easily connected to other components, simplifying the installation process and improving installation efficiency. The fixed connection between the upper connector 4 and the connecting block 2 further enhances the structural stability of the entire shock absorber piston shaft, ensuring that it will not loosen during use. A guide seat 5 is fixedly connected to the bottom of the dust cover 1, and a guide groove is provided on the surface of the guide seat 5. Several guide grooves are provided, and a damping spring 6 is fixedly connected to the bottom of the guide seat 5.
[0020] A connecting sleeve 7 is fixedly connected to the bottom of the guide seat 5. The connecting sleeve 7 further connects the guide seat to the piston shaft body 8, which enhances the structural stability of the entire shock absorber and ensures that the piston shaft body will not loosen during movement.
[0021] The piston shaft body 8 is installed inside the dust cover 1. The piston shaft body 8 passes through the guide seat 5 and extends into the interior of the connecting sleeve 7.
[0022] The piston shaft body 8 is fixedly connected to the connecting chassis 9 at its bottom end. The design of the connecting chassis 9 can be expanded according to different application scenarios, such as adding sensor installation interfaces, to improve the intelligence level of the shock absorber.
[0023] The front end of the connecting chassis 9 has a bayonet, which allows the shock absorber piston shaft to be easily connected and fixed to other components, simplifying the installation process.
[0024] The bottom of the connecting chassis 9 is fixedly connected to the mounting plate 10. The design of the mounting plate can be adapted to different vehicles or mechanical equipment, thereby improving the versatility and compatibility of the shock absorber.
[0025] The mounting plate 10 has a slot 11 on its surface and a lower connector 12 is fixedly connected to the bottom of the mounting plate 10. The lower connector 12 can be expanded in function according to different application scenarios, such as adding connection interfaces, to improve the versatility and compatibility of the shock absorber.
[0026] The shock absorber spring 6 is made of carbon spring steel. Carbon spring steel springs have good fatigue resistance and can maintain stable elastic characteristics during long-term use, thus extending the service life of the shock absorber.
[0027] The implementation principle of a shock absorber piston shaft in this embodiment is as follows: When a vehicle travels on an uneven road surface or is impacted by other external forces, the shock absorber piston shaft experiences an upward impact force. The piston shaft body 8 moves upward within the guide groove of the guide seat 5, simultaneously compressing the damping spring 6. The damping spring 6 undergoes elastic deformation, absorbing and buffering most of the impact energy, thereby reducing the transmission of vibration. When the impact force disappears, the damping spring 6, relying on its own elastic restoring force, pushes the piston shaft body 8 downward to reset, restoring the shock absorber to its initial state, ready for the next shock absorption operation.
[0028] The dust cover 1 always encloses a portion of the piston shaft body 8, preventing external dust and impurities from entering the shock absorber and protecting the cleanliness and normal operation of internal components. The guide groove of the guide seat 5 provides a precise guide path for the up-and-down movement of the piston shaft body 8, ensuring that the piston shaft body 8 always maintains a straight line during movement, avoiding lateral deviation, thereby reducing wear between the piston shaft body 8 and the guide seat 5, and ensuring the long-term stable operation of the shock absorber.
[0029] The anti-slip texture 3 on the top of the connecting block 2 increases friction when connected to external components, preventing loosening at the connection. The piston shaft body 8 passes through the guide seat 5 and extends into the connecting sleeve 7, which further enhances the stability of the piston shaft body 8. The bayonet at the front end of the connecting chassis 9 and the groove 11 on the surface of the mounting plate 10 are used for connection and fixation with other components, ensuring that the entire shock absorber piston shaft can be securely installed in the designated position in the vehicle or machinery to perform its shock absorption function.
[0030] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.
Claims
1. A shock absorber piston shaft, characterized in that, Includes a dust cover (1), a connecting block (2) is fixedly connected to the top of the dust cover (1), the top of the connecting block (2) is provided with anti-slip texture (3), the top of the connecting block (2) is fixedly connected with an upper connector (4), the bottom of the dust cover (1) is fixedly connected with a guide seat (5), the surface of the guide seat (5) is provided with a guide groove, a number of guide grooves are provided, and the bottom of the guide seat (5) is fixedly connected with a shock-absorbing spring (6).
2. The shock absorber piston shaft as described in claim 1, characterized in that: The bottom end of the guide seat (5) is fixedly connected to the connecting sleeve (7).
3. A shock absorber piston shaft as described in claim 1, characterized in that: The dust cover (1) has a piston shaft body (8) installed inside. The piston shaft body (8) passes through the guide seat (5) and extends into the interior of the connecting sleeve (7).
4. A shock absorber piston shaft as described in claim 3, characterized in that: The piston shaft body (8) is fixedly connected to a connecting chassis (9) at its bottom end.
5. A shock absorber piston shaft as described in claim 4, characterized in that: The connecting chassis (9) has a bayonet at its front end.
6. A shock absorber piston shaft as described in claim 5, characterized in that: The bottom end of the connecting chassis (9) is fixedly connected to the mounting plate (10).
7. A shock absorber piston shaft as described in claim 6, characterized in that: The mounting plate (10) has a slot (11) on its surface, and a lower connector (12) is fixedly connected to the bottom of the mounting plate (10).
8. A shock absorber piston shaft as described in claim 1, characterized in that: The damping spring (6) is made of carbon spring steel.