Shock absorption device

Abstract

The utility model discloses a shock-proof device which comprises a seat post, the seat post is specifically of a hollow tubular structure, a main spring and an auxiliary spring are arranged in the seat post, and the main spring is arranged at the position, close to the bottom end of the seat post, below the auxiliary spring; the main spring is fixedly connected with the bottom of the seat rod, and an adjusting device is arranged below the main spring. The adjusting device is used for controlling the main spring to contract or stretch. According to the shock-absorbing device, the technical scheme that the main spring and the auxiliary spring with different force values are introduced is adopted, so that the shock-absorbing seat rod can be dynamically adjusted under different road conditions, and the optimal shock-absorbing effect is provided. Meanwhile, by optimizing the design of the seat adjusting device, a user can adjust the angle and the position of the seat cushion more conveniently, the design of a single bolt and a telescopic rod is adopted, the convenience of adjustment is improved, the risk of falling off is reduced, and meanwhile the attractiveness of the appearance is improved.

Description

Technical Field

[0001] The utility model relates to the field of bicycles, in particular to a shock-absorbing device. Background Art

[0002] In the current suspension seat post technology of the prior art, a common problem is the singleness of the suspension medium, which leads to the fixed force range. Specifically, the traditional suspension seat post often uses a single shock absorbing medium (such as a spring or damper), whose stiffness and damping characteristics are determined at the beginning of the design and cannot be dynamically adjusted according to the different road conditions encountered during riding. This suspension seat post with a fixed force range seems to be powerless when dealing with changing road conditions. For example, when riding on a gravel road, a relatively soft suspension effect is required to absorb the impact from irregular road surfaces; while when riding in the mountains, a harder suspension setting may be required to provide sufficient support and stability. However, the traditional suspension seat post cannot achieve smooth transition and optimal suspension performance between these different road conditions. In addition, the suspension seat post with a fixed force range may also have a negative impact on the comfort and safety of the rider. Under long-term or high-intensity riding conditions, a suspension seat post that cannot be adjusted according to road conditions and rider needs may cause riders to feel fatigue or discomfort, and may even increase the risk of injury.

[0003] On the other hand, the adjustment seat cushion in the prior art is mostly designed with a double nail structure. Although this structure realizes the adjustment function of the seat cushion position and angle to a certain extent, it also has some significant problems. First, the adjustment process of the double nail structure is often not convenient enough. Since the position and tightness of the two screws need to be adjusted at the same time, the rider may need to use additional tools when adjusting the seat cushion, and it takes multiple attempts to achieve the ideal adjustment effect. This not only increases the complexity and time cost of the adjustment, but also may lead to the inability to quickly adjust the seat cushion to adapt to different road conditions in an emergency. Secondly, the double nail structure has the risk of falling off. During riding, due to the bumps and impacts of the road, the two screws may gradually loosen or even fall off. This will not only affect the stability of the seat cushion and the comfort of the rider, but may also cause safety accidents in extreme cases. The double nail structure also has a certain impact on the appearance of the seat cushion and the entire bicycle. The two exposed screws not only destroy the overall beauty of the seat cushion and the bicycle, but may also be corroded and damaged due to long-term exposure. This not only reduces the beauty of the product, but also shortens its service life.

[0004] In view of the problems existing in the prior art, it is of great significance to provide a shock-absorbing device. Utility Model Content

[0005] In order to solve the above problems, the utility model provides a shock-absorbing device.

[0006] To achieve the above object, the utility model provides a shock absorbing device, comprising a seat post, the seat post being specifically a hollow tubular structure, a main spring and a secondary spring being arranged inside the seat post, the main spring being arranged below the secondary spring and close to the bottom end of the seat post; the main spring being fixedly connected to the bottom of the seat post, an adjusting device being arranged below the main spring; the adjusting device being used to control the contraction or extension of the main spring;

[0007] Furthermore, a first main spring guide seat is provided at the top end of the main spring, and a second main spring guide seat is provided at the bottom end of the main spring; the main spring is fixedly connected to the bottom of the seat rod through the second main spring guide seat, and the adjustment device is used to control the contraction or extension of the main spring through the second main spring guide seat;

[0008] Further, a first auxiliary spring guide seat is arranged at the top end of the auxiliary spring, and a second auxiliary spring guide seat is arranged at the bottom end of the auxiliary spring; a buffer rubber pad and a limit pad are arranged on the first auxiliary spring guide seat; the second auxiliary spring guide seat is arranged above the first main spring guide seat;

[0009] Furthermore, it also includes a screw rod and a telescopic rod, one end of the screw rod is fixedly arranged on the first main spring guide seat, and the screw rod passes through the auxiliary spring so that the other end thereof is connected to the telescopic rod;

[0010] Further, the telescopic rod is arranged at the top opening of the seat rod and can be telescoped up and down relative to the seat rod;

[0011] Furthermore, it also includes a bolt, an angle adjustment gasket and an adjustment locking device, the top of the telescopic rod is provided with a bolt hole corresponding to the bolt, the angle adjustment gasket and the adjustment locking device are fixedly arranged at the top position of the telescopic rod through the bolt, the angle adjustment gasket is used to adjust the seat angle, and the adjustment locking device is used to fix the seat angle;

[0012] Furthermore, a bushing is provided on the telescopic rod;

[0013] Furthermore, an oil seal and an oil seal cover are provided at the top opening of the seat post;

[0014] Furthermore, a buffer column is arranged inside the main spring.

[0015] The utility model discloses a shock absorbing device, which introduces a technical solution of two main and secondary springs with different force values, so that the shock absorbing seat post can be dynamically adjusted under different road conditions to provide the best shock absorption effect. Under slightly bumpy road conditions, the secondary spring can respond quickly and provide obvious feedback due to its smaller elastic force; while on mountainous roads or when passing through deep pits, when the secondary spring is compressed to the limit, the main spring begins to play a role and continues to provide shock absorption support. This dual-spring design not only expands the force range, but also improves the adaptability of the shock absorbing seat post to different road conditions. At the same time, by optimizing the design of the seat adjustment device, the user can more conveniently adjust the angle and position of the seat cushion. The design of a single bolt and telescopic rod not only improves the convenience of adjustment, but also reduces the risk of falling off, while also improving the appearance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of the shock-absorbing device of the utility model;

[0017] Figure 2 It is a schematic structural diagram of the main spring and the auxiliary spring of the shock-absorbing device of the utility model. DETAILED DESCRIPTION

[0018] The structure and working principle of the present invention are further described below with reference to the accompanying drawings.

[0019] like Figure 1 and Figure 2 As shown, Figure 1 This is a schematic diagram of the overall structure of the shock-absorbing device of the utility model. Figure 2The schematic diagram of the structure of the main spring 2 and the auxiliary spring 3 of the shock absorber of the utility model is a shock absorber of the utility model, comprising a seat post 1, the seat post 1 is specifically a hollow tubular structure, a main spring 2 and an auxiliary spring 3 are arranged inside the seat post 1, the main spring 2 is arranged below the auxiliary spring 3, close to the bottom end of the seat post 1; the main spring 2 is fixedly connected to the bottom of the seat post 1, and an adjustment device 4 is arranged below the main spring 2; the adjustment device 4 is used to control the contraction or extension of the main spring 2. In a preferred embodiment of the utility model, a first main spring guide seat 22 is arranged at the top of the main spring 2, and a second main spring guide seat 21 is arranged at the bottom of the main spring 2; the main spring 2 is fixedly connected to the bottom of the seat post 1 through the second main spring guide seat 21, and the adjustment device 4 is used to control the contraction or extension of the main spring 2 through the second main spring guide seat 21. As a key component, the adjustment device 4 is responsible for controlling the contraction or extension state of the main spring 2. In a preferred embodiment of the utility model, the adjusting device 4 is also provided with an adjusting knob or an adjusting screw, and the user can move the adjusting device up and down by rotating or twisting the adjusting knob or the adjusting screw, thereby adjusting the contraction or extension of the main spring 2. The adjusting device 4 can significantly change the mechanical properties of the shock absorber by accurately adjusting the deformation degree of the main spring 2 to adapt to riders of different weights and changing riding conditions. Generally, the weight of each rider is different, which puts forward personalized requirements for the shock absorber. The adjusting device 4 can adjust the response of the shock absorber to the rider's weight by controlling the contraction or extension of the main spring 2. For riders with lighter weight, the adjusting device can reduce the pre-compression of the main spring, thereby reducing the initial stiffness of the shock absorber and providing a softer shock absorption effect. On the contrary, for riders with heavier weight, the adjusting device can increase the pre-compression of the main spring to improve the support force and stability of the shock absorber. Furthermore, the diversity of road conditions during riding poses a severe challenge to the shock absorber. From smooth roads to rugged mountains, each road condition requires a suspension with specific mechanical properties. The adjustment device can dynamically adjust the force of the main spring to make the suspension perform well in different road conditions. On bumpy mountain roads, the adjustment device can increase the stiffness of the main spring to provide stronger shock absorption, while on smooth roads, the adjustment device can reduce the stiffness of the main spring for a more comfortable riding experience. In addition to adapting to changes in weight and road conditions, the adjustment device also provides riders with personalized adjustment options. Each rider can fine-tune the mechanical properties of the suspension according to their preferences and riding style. This personalized adjustment not only improves riding comfort, but also helps reduce fatigue caused by long rides.

[0020] A first auxiliary spring guide seat 32 is arranged at the top of the auxiliary spring 3, and a second auxiliary spring guide seat 31 is arranged at the bottom of the auxiliary spring; a buffer rubber pad 6 and a limit pad 7 are arranged on the first auxiliary spring guide seat 31; the second auxiliary spring guide seat 31 is arranged above the first main spring guide seat 22. The role and function of the buffer rubber pad 6 can specifically protect the seat post and spring. By reducing direct impact, the buffer rubber pad 6 helps to extend the service life of the seat post and spring, and reduce wear or deformation caused by long-term force; improve riding comfort, the soft material of the buffer rubber pad can provide a better riding experience, reduce the bumpy feeling during riding, and increase riding comfort. The role and function of the limit pad are: 1. Limit the spring travel. The main function of the limit pad is to limit the maximum compression travel of the auxiliary spring to prevent the spring from being damaged or losing elasticity due to excessive compression. When the auxiliary spring is compressed to a certain extent, the limit pad will play a blocking role to ensure that the spring works within a safe range; 2. Maintain the stability of the device. By limiting the excessive movement of the spring, the limit pad helps to maintain the stability of the entire shock absorber. In extreme road conditions, the limit pad can prevent the seat post and spring from accidentally shifting or falling off; 3. Adjust the shock absorption effect. By adjusting the position or thickness of the limit pad, the shock absorption effect of the shock absorber can be indirectly adjusted. For example, increasing the thickness of the limit pad can reduce the effective stroke of the auxiliary spring, so that the shock absorber performs better on harder roads. In the preferred embodiment of the utility model, different materials of buffer rubber pads can be selected according to different riding needs and road conditions. For example, in mountain riding, harder and more wear-resistant materials can be selected to provide stronger support and durability; while in urban commuting, softer and more comfortable materials can be selected to improve riding comfort; at the same time, riders can adjust the position or thickness of the limit pad according to personal preferences and road conditions. This design not only provides greater flexibility, but also enables the shock absorber to adapt to a wider range of road conditions and riding styles; further, a multi-level buffer system can be designed, including a combination of several buffer rubber pads and limit pads. The design of this multi-level buffer system can provide a step-by-step enhanced shock absorption effect under different impacts, providing riders with a more stable and comfortable riding experience.

[0021] A buffer column 5 is arranged inside the main spring 2. The buffer column 5 plays the role of enhancing stability, preventing over-compression, absorbing impact energy, guiding spring movement, and possibly assisting the adjustment function in the shock absorber; the buffer column 5 can be used to increase the stability of the main spring when it is subjected to pressure or impact. Since the spring may bend or deflect laterally when compressed or stretched, the buffer column can provide additional support to ensure that the spring moves along a predetermined axial direction. At the same time, when the shock absorber is subjected to a strong impact, the main spring may be at risk of over-compression. The buffer column can act as a physical limit to prevent the spring from being compressed to an irrecoverable degree, thereby protecting the spring and the entire shock absorber from damage. The buffer column itself may have certain elastic or damping characteristics, which helps to absorb and disperse the impact energy transmitted to the shock absorber. In this way, the buffer column not only supports the work of the main spring, but also directly participates in the shock absorption process. Further, the buffer column can be designed into a specific shape or structure to guide the main spring to compress or stretch in a specific way when it is impacted, which helps to optimize the shock absorption effect and ensure that the response of the device under different conditions is more predictable and consistent.

[0022] like Figure 1 As shown, Figure 1This is a schematic diagram of the overall structure of the shock absorbing device of the utility model. The shock absorbing device of the utility model also includes a screw rod 8 and a telescopic rod 12. One end of the screw rod 8 is fixedly set on the first main spring guide seat 22. The screw rod 8 passes through the secondary spring 3 so that the other end is connected to the telescopic rod 12. The telescopic rod 12 is set at the top opening of the seat post 1 and can be telescoped up and down relative to the seat post 1. The telescopic rod 12 is provided with a bushing 9. Preferably, the bushing can be a circular bushing 9 or a hexagonal bushing 9. It should be explained in detail that the main function of the telescopic rod 12 is to work in coordination with the main spring 2 and the secondary spring 3 inside the seat post 1, so as to achieve effective shock absorption and seat height adjustment. The functions of the telescopic rod can be summarized as follows: 1. The telescopic rod constitutes a part of the shock absorbing system by connecting to the top of the seat post. During riding, when encountering road bumps or impacts, the spring system will compress to absorb energy, and the telescopic rod will achieve a smooth shock absorption effect by telescoping up and down in cooperation with the spring system; 2. The design of the telescopic rod allows the rider to adjust the height of the seat cushion according to personal needs. By adjusting the extension length of the telescopic rod relative to the seat post, the rider can easily find the riding posture that best suits him or her, thereby improving the comfort and efficiency of riding; 3. The telescopic rod can be adjusted simply and quickly, the design of the telescopic rod is simple, and the adjustment process is also faster and more intuitive. This is an important advantage for riders who need to frequently adjust the height of the seat cushion in different scenarios. In a preferred embodiment of the utility model, the bushing is made of a material with a low friction coefficient, such as a polymer or a specific type of metal. The bushing is installed at the contact portion between the telescopic rod and the inside of the seat post to reduce the friction between the two, thereby ensuring that the telescopic rod is smoother during adjustment and shock absorption, reducing energy loss and wear.

[0023] Furthermore, the bushing increases the contact area between the telescopic rod 12 and the seat post 1, thereby improving the stability of the entire system. This helps prevent accidental sliding or falling off due to bumpy roads during riding; the bushing can also effectively isolate the noise and subtle vibrations transmitted from the road surface to the seat post and telescopic rod. This helps to improve riding comfort and reduce fatigue caused by long-term riding. The bushing can extend the service life of the seat post 1 and telescopic rod 12 by reducing direct contact and friction between the telescopic rod and the seat post, thereby reducing maintenance and replacement costs.

[0024] In a preferred embodiment of the utility model, a bolt 15, an angle adjustment gasket 14 and an adjustment locking device 13 are also included. The top of the telescopic rod 12 is provided with a bolt hole corresponding to the bolt 15. The angle adjustment gasket 14 and the adjustment locking device 13 are fixedly arranged at the top position of the telescopic rod 12 through the bolt 15. The angle adjustment gasket 14 is used to adjust the seat angle, and the adjustment locking device 13 is used to fix the seat angle. The traditional seat adjustment design usually adopts a double nail structure. This design requires multiple loosening and tightening of screws during adjustment, which is cumbersome to operate and has the risk of falling off. In the ground shock-absorbing device of the utility model, a single bolt design is adopted to simplify the adjustment process. The rider only needs to loosen a bolt set at the top of the telescopic rod to easily adjust the angle and height of the seat cushion, and then tighten the bolt to complete the adjustment, which significantly improves the convenience and efficiency of the adjustment. At the same time, since only one bolt needs to be tightened, compared with the double nail structure, the single bolt design reduces the risk of falling off due to loose screws or forgotten tightening during riding, and enhances the safety during riding. The single bolt design makes the appearance of the seat cushion and the shock absorber more concise and streamlined, improves the overall aesthetics, and better meets the aesthetic needs of modern riders for the appearance of equipment. The angle adjustment gasket is a key component used in conjunction with the single bolt, which allows the rider to finely adjust the angle of the seat cushion. By increasing or decreasing the number or thickness of the gaskets, the rider can easily adjust the seat cushion to the riding angle that best suits him / her, thereby improving the comfort and efficiency of riding. The adjustment locking device is connected with the angle adjustment gasket to ensure that the seat cushion with the adjusted angle remains unchanged. During riding, the seat cushion may move slightly due to bumps or the rider's movements. The adjustment locking device firmly fixes the seat cushion at the set angle by tightening the bolt, ensuring the stability of the seat cushion during riding. This helps the rider maintain a correct riding posture, reduces fatigue, and improves riding safety.

[0025] In the shock-absorbing device described in the utility model, the single bolt 15, the angle adjustment gasket 14 and the adjustment locking device 13 are closely combined to form an efficient, stable and beautiful adjustment system. The single bolt 15 serves as a core connector to fix the angle adjustment gasket 14 and the adjustment locking device 13 on the telescopic rod 12. The angle adjustment gasket 14 is fixed by the single bolt 15 to form an adjustable support surface between the telescopic rod 12 and the seat cushion, so that the rider can adjust the angle of the seat cushion as needed. The adjustment locking device 13 is responsible for locking the seat cushion and the telescopic rod 12 in a fixed position after adjusting the angle to ensure stability during riding.

[0026] An oil seal 11 and an oil seal cover 10 are provided at the top opening of the seat post; the oil seal 1 can play a sealing role to prevent external impurities (such as dust, moisture, etc.) from entering the interior of the seat post, thereby protecting the key components such as the main spring 2 and the auxiliary spring 3 inside the seat post from pollution and corrosion. The sealing effect of the oil seal 11 is crucial to ensure the long-term stable operation of the shock absorber. At the same time, the oil seal 11 can also maintain the lubrication state inside the seat post and play a buffering and shock-absorbing role. The oil seal 11 prevents the leakage of lubricating oil, and the oil seal ensures that the internal components can work under good lubrication conditions, thereby reducing friction and wear and extending the service life of the shock absorber. When the telescopic rod 12 moves up and down inside the seat post, the oil seal 11 can absorb part of the impact energy, which helps to improve the stability and comfort of riding.

[0027] The oil seal cover 10 is specifically used to protect the oil seal 11. In a preferred embodiment of the utility model, the oil seal cover 10 is arranged below the oil seal 11, which can protect the oil seal from direct external impact and damage, and can effectively prevent sharp objects or foreign objects from contacting the oil seal 11, thereby reducing the risk of puncture or damage to the oil seal 11. The oil seal cover 10 can also cooperate with the oil seal 11 to form a more complete sealing system, further enhancing the sealing effect inside the seat post.

[0028] The above is only an illustrative description of the present invention. Those skilled in the art should know that various improvements can be made to the present invention without departing from the working principle of the present invention, which all fall within the protection scope of the present invention.

Claims

1. A shock absorbing device, characterized in that: It includes a seat post, which is specifically a hollow tubular structure. A main spring and a secondary spring are arranged inside the seat post. The main spring is arranged below the secondary spring and close to the bottom end of the seat post. The main spring is fixedly connected to the bottom of the seat post, and an adjustment device is arranged below the main spring. The adjustment device is used to control the contraction or extension of the main spring.

2. The shock absorbing device according to claim 1, characterized in that: A first main spring guide seat is arranged at the top end of the main spring, and a second main spring guide seat is arranged at the bottom end of the main spring; the main spring is fixedly connected to the bottom of the seat rod through the second main spring guide seat, and the adjusting device is used to control the contraction or extension of the main spring through the second main spring guide seat.

3. The shock absorbing device according to claim 2, characterized in that: A first auxiliary spring guide seat is arranged at the top end of the auxiliary spring, and a second auxiliary spring guide seat is arranged at the bottom end of the auxiliary spring; a buffer rubber pad and a limit pad are arranged on the first auxiliary spring guide seat; the second auxiliary spring guide seat is arranged above the first main spring guide seat.

4. The shock absorbing device according to claim 3, characterized in that: It also includes a screw rod and a telescopic rod. One end of the screw rod is fixedly arranged on the first main spring guide seat. The screw rod passes through the auxiliary spring so that the other end of the screw rod is connected to the telescopic rod.

5. The shock absorbing device according to claim 4, characterized in that: The telescopic rod is arranged at the top end opening of the seat rod and can be telescoped up and down relative to the seat rod.

6. The shock absorbing device according to claim 5, characterized in that: It also includes a bolt, an angle adjustment gasket and an adjustment locking device. The top of the telescopic rod is provided with a bolt hole corresponding to the bolt. The angle adjustment gasket and the adjustment locking device are fixed to the top position of the telescopic rod through the bolt. The angle adjustment gasket is used to adjust the seat angle, and the adjustment locking device is used to fix the seat angle.

7. The shock absorbing device according to claim 5, characterized in that: A bushing is arranged on the telescopic rod.

8. The shock absorbing device according to claim 1 or 5, characterized in that: An oil seal and an oil seal cover are arranged at the top opening of the seat rod.

9. The shock absorbing device according to claim 1, characterized in that: A buffer column is arranged inside the main spring.

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