Front shock absorber of air suspension motorcycle

Abstract

The utility model provides an air suspension motorcycle front shock absorber which comprises a shock absorber body, a fork pipe is connected to the inner wall of one end of the shock absorber body, a top cover is arranged at the end, away from the fork pipe, of the shock absorber body, an end cover is arranged at the top of the top cover, an adjustable valve rod device is arranged at one end of the end cover and located in the top cover, and the adjustable valve rod device is connected with the shock absorber body. The tail end of the adjustable valve rod device is fixedly connected with a piston, the piston is located in the fork pipe, a valve port is formed in the piston, the interior of the fork pipe is divided into a first air chamber and a second air chamber through the piston, and when an operator controls the adjustable valve rod device, the second air chamber can adjust air pressure to the first air chamber under the action of a piston valve. When presetting is not needed, after the adjustable valve rod device is completely unfolded, the shock absorber body responds to irregular vibration of the road surface, and the piston freely moves in the fork pipe.

Description

Technical Field

[0001] The utility model relates to the field of motorcycle shock absorbers, in particular to a front shock absorber for an air suspension motorcycle. Background Art

[0002] The main function of a motorcycle's front shock absorber is to absorb and alleviate the impact and vibration caused by uneven road surfaces to ensure the rider's comfort and safety. When a motorcycle is traveling on a rough road, the front shock absorber can effectively reduce the vibration caused by road bumps, allowing the rider to better control the motorcycle and maintain driving stability. In addition, the front shock absorber can also absorb part of the impact force from the road, thereby protecting the motorcycle's frame and other important components from damage.

[0003] There is now a Chinese patent document CN202123276848.1 that describes a motorcycle front shock absorber preload adjustment mechanism, which includes a front fork tube, a spring seat, an end cover body, a spring, an adjusting core shaft, and a dust cap. The free length of the spring of this utility model motorcycle front shock absorber preload adjustment mechanism remains unchanged. By adjusting the adjusting core shaft, the spring seat is moved. The distance the spring seat moves is the change in the spring installation length, that is, the change in the shock absorber preload. This motorcycle front shock absorber preload adjustment mechanism has a simple structure and is easy to adjust, which can meet the usage requirements of different users.

[0004] However, the above patent has certain defects when used. Due to the limited movement range of the spring seat, the adjustment effect is not ideal when the road conditions change drastically, resulting in insufficient sensitivity of the preload adjustment and difficulty in adapting to complex and changing road environments.

[0005] For this reason, an air suspension motorcycle front shock absorber is proposed here to solve the above-mentioned problems. Utility Model Content

[0006] In order to overcome the deficiencies of the prior art, the utility model provides an air suspension motorcycle front shock absorber.

[0007] The utility model is implemented by the following technical solutions:

[0008] Air suspension motorcycle front shock absorber, including

[0009] A shock absorber body, wherein a fork tube is connected to the inner wall of one end of the shock absorber body, a top cover is provided at the end of the shock absorber body away from the fork tube, an end cover is provided on the top of the top cover, an adjustable valve stem device is provided at one end of the end cover, and the adjustable valve stem device is located inside the top cover, and the adjustable valve stem device includes: a push-pull nut, a torsion block, a limit sleeve, and a push-pull rod, the torsion block is located inside the top cover, and a push-pull nut is provided inside the top cover, one end of the push-pull nut is fixedly connected to the limit sleeve, the limit sleeve is movably installed in the fork tube, and a push-pull rod is provided inside the limit sleeve;

[0010] A first screw is provided in the middle of the end cover, and the first screw is fixedly installed in the push-pull nut;

[0011] The end of the adjustable valve stem device is fixedly connected to a piston, and the piston is located in the fork tube. A valve port is provided on the piston, and the piston divides the interior of the fork tube into a first air chamber and a second air chamber.

[0012] As a preferred solution of the present invention, a connecting port is provided on one side of the fork tube, and a thread is provided on the inner wall of the connecting port, and a valve joint is connected to the inner thread of the connecting port.

[0013] As a preferred solution of the present invention, a fixing sleeve is provided at the inner end of the fork tube, a matching block is fixedly connected to the fixing sleeve, a fixing nut is provided in the fixing sleeve, a second screw is provided in the fixing nut, and the second screw passes through the end of the fork tube.

[0014] As a preferred solution of the present invention, a stop block is provided in the fork tube at one end away from the fixed sleeve, and the stop block is located in the first air chamber, and one end of the stop block is fixedly connected to a shock-absorbing spring.

[0015] As a preferred solution of the present invention, a first sealing ring is provided on the piston, and a second sealing ring is provided on the peripheral wall connecting the top cover and the shock absorber body.

[0016] As a preferred solution of the present invention, a limiting ring is provided at the contact position between the end of the shock absorber body and the fork tube, a sealing ring is provided on one side of the limiting ring, and a buckle is provided on the side of the limiting ring away from the sealing ring.

[0017] Compared with the prior art, the advantages of the present invention are:

[0018] 1. The fork tube is divided into a first air chamber and a second air chamber by a piston in the fork tube, which is separated or connected by the piston and the valve. The valve is controlled by an adjustable valve stem device. When the torsion block is rotated, the push-pull rod moves in the limit sleeve to control the opening and closing of the valve. Its axial movement is pushed and pulled by the push-pull nut. The push-pull nut is provided with internal and external threads and is arranged in the top cover. Its internal thread part cooperates with the torsion block. The upper part of the torsion block is embedded in the end cover and fastened to the end by screws, which improves the applicability of the vehicle suspension system, improves the vehicle comfort and adaptability to road conditions and load changes, improves the overall performance of the vehicle to a certain extent, reduces maintenance costs, and increases the stability of the system.

[0019] 2. A fixing sleeve is provided in the second air chamber space, and the fixing sleeve is fixed by a fixing nut and a second screw. A matching block is provided at one end of the fixing sleeve to adapt to the needs of different vehicle models. A connecting port is provided on one side of the fork tube, and a thread is provided in the connecting port. The air pipe joint is installed in the connecting port through the thread, which facilitates the connection and adjustment of the air circuit and ensures the sealing and reliability of the air circuit.

[0020] 3. Through the coordination of the valve joint, fork tube, shock absorber body, and adjustable valve stem device, the operator can independently adjust the stiffness of the shock absorber body by rotating the adjustable valve stem device according to the vehicle's road conditions and load changes. The vehicle body can also be placed in the lowest state when parked to lower the vehicle's center of gravity and improve driving stability, thereby adapting to complex and changing road environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is the main structure diagram of the shock absorber of the utility model;

[0022] Figure 2 This is a structural diagram of the adjustable valve stem device of the utility model;

[0023] Figure 3 This is a structural diagram of the piston of the utility model;

[0024] Figure 4 This is a structural diagram of the valve joint of the utility model;

[0025] In the figure: 1. Shock absorber body; 2. Top cover; 3. Push-pull nut; 4. First screw; 5. Torsion block; 6. End cover; 7. Push-pull rod; 8. Fork tube; 9. Piston; 10. Valve; 11. First sealing ring; 12. First air chamber; 13. Second air chamber; 14. Limiting ring; 15. Sealing ring; 16. Buckle; 17. Abutment; 18. Shock absorber spring; 19. Second sealing ring; 20. Connecting port; 21. Thread; 22. Valve joint; 23. Fixing sleeve; 24. Matching block; 25. Fixing nut; 26. Second screw; 27. Limiting sleeve. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0027] Example:

[0028] See also Figure 1-Figure 4 , air suspension motorcycle front shock absorber, including:

[0029] A shock absorber body 1, a fork tube 8 is connected to the inner wall of one end of the shock absorber body 1, a top cover 2 is provided at the end of the shock absorber body 1 away from the fork tube 8, an end cover 6 is provided on the top of the top cover 2, an adjustable valve stem device is provided at one end of the end cover 6, and the adjustable valve stem device is located inside the top cover 2, the adjustable valve stem device includes: a push-pull nut 3, a torsion block 5, a limit sleeve 27, and a push-pull rod 7, the torsion block 5 is located inside the top cover 2, and a push-pull nut 3 is provided inside the top cover 2, one end of the push-pull nut 3 is fixedly connected to the limit sleeve 27, the limit sleeve 27 is movably installed in the fork tube 8, and a push-pull rod 7 is provided inside the limit sleeve 27;

[0030] A first screw 4 is provided in the middle of the end cover 6 and is fixedly mounted in the push-pull nut 3;

[0031] The end of the adjustable valve stem device is fixedly connected to a piston 9, and the piston 9 is located in the fork tube 8. A valve port is provided on the piston 9, and the piston 9 divides the interior of the fork tube 8 into a first air chamber 12 and a second air chamber 13.

[0032] In this embodiment, the shock absorber body 1 is provided with a fork tube 8 at one end and a top cover 2 at the other end. The top of the top cover 2 is connected to the end cover 6. An adjustable valve stem device is provided at one end of the end cover 6, and the adjustable valve stem device is located inside the top cover 2, a push-pull nut 3, a torsion block 5, a limit sleeve 27, and a push-pull rod 7. The torsion block 5 is located inside the top cover 2, and a push-pull nut 3 is provided inside the top cover 2. One end of the push-pull nut 3 is fixedly connected to the limit sleeve 27, and the limit sleeve 27 is movably installed in the fork tube 8. A push-pull rod 7 is provided in the limit sleeve 27. A piston 9 is fixedly connected to the end of the adjustable valve stem device, and a valve is provided on the piston 9. The opening of the fork tube 8 is controlled by an adjustable valve stem device. When the torsion block 5 is rotated, the push-pull rod 7 moves in the limit sleeve 27, thereby controlling the opening and closing of the valve 10. Its axial movement is driven by the push-pull nut 3. The push-pull nut 3 is provided with internal and external threads 21 and is arranged in the top cover 2. The internal thread 21 part cooperates with the torsion block 5 so that when the torsion block 5 rotates, the internal thread 21 can interact with the push-pull nut 3 to achieve precise control of the push-pull rod 7, so as to achieve the purpose of adjusting the air pressure in the first air chamber 12 and the second air chamber 13.

[0033] Specifically, a connecting port 20 is provided on one side of the fork tube 8 , and a thread 21 is provided on the inner wall of the connecting port 20 . The inner thread 21 of the connecting port 20 is connected to a valve joint 22 .

[0034] In this embodiment, a connection port 20 is provided on one side of the fork tube 8 to facilitate connection with an external gas source. A thread 21 is provided inside the connection port 20, and the air pipe joint is installed in the connection port 20 through the thread 21, which facilitates the connection and adjustment of the air path and ensures the sealing of the air path.

[0035] Specifically, a fixing sleeve 23 is provided at the inner end of the fork tube 8, a matching block 24 is fixedly connected to the fixing sleeve 23, and a fixing nut 25 is provided in the fixing sleeve 23, a second screw 26 is provided in the fixing nut 25, and the second screw 26 passes through the end of the fork tube 8.

[0036] In this embodiment, a fixing sleeve 23 is provided at the inner end of the fork tube 8, and the fixing sleeve 23 is located in the second air chamber 13. A certain gap is formed between the matching block 24 on the fixing sleeve 23 and the piston 9 to adapt to the needs of different vehicle models. At the same time, the fixing sleeve 23 can change the distance between the matching block 24 and the piston 9 by adjusting the tightness of the second screw 26, thereby affecting the effective volume of the second air chamber 13 and achieving fine-tuning of the shock absorption performance of the shock absorber body 1.

[0037] Specifically, a stop block 17 is provided at one end of the fork tube 8 away from the fixing sleeve 23 , and the stop block 17 is located in the first air chamber 12 . One end of the stop block 17 is fixedly connected to a shock-absorbing spring 18 .

[0038] In this embodiment, the connection between the abutment block 17 and the shock-absorbing spring 18 effectively absorbs the impact from the road surface and improves the shock-absorbing effect. When the piston 9 moves in the fork tube 8, when the piston 9 contacts the shock-absorbing spring 18, the abutment block 17 can adjust the compression degree of the spring, thereby optimizing the shock-absorbing effect.

[0039] Specifically, a first sealing ring 11 is provided on the piston 9 , and a second sealing ring 19 is provided on the peripheral wall connecting the top cover 2 and the shock absorber body 1 .

[0040] In this embodiment, the first sealing ring 11 on the piston 9 is used to ensure that the air pressure is accurately distributed between the first air chamber 12 and the second air chamber 13, while the second sealing ring 19 located on the peripheral wall of the top cover 2 effectively prevents gas leakage, thereby ensuring the overall sealing and stability of the shock absorber body 1.

[0041] Specifically, a limiting ring 14 is provided at the position where the end of the shock absorber body 1 contacts the fork tube 8 , a sealing ring 15 is provided on one side of the limiting ring 14 , and a buckle 16 is provided on the side of the limiting ring 14 away from the sealing ring 15 .

[0042] In this embodiment, a limiting ring 14 is provided at the contact position between the end of the shock absorber body 1 and the fork tube 8. Its function is to limit the movement range of the fork tube 8 in the shock absorber body 1. A sealing ring 15 is provided on one side of the limiting ring 14 to ensure that the fork tube 8 will not separate from the body when it is in the extreme position, and the buckle 16 is used to fix the sealing ring 15 to prevent it from shifting during severe vibration, thereby further improving the safety performance of the shock absorber.

[0043] The principle of this utility model is that the operator can independently pre-adjust the shock absorber body 1 according to the road conditions and load changes of the vehicle. The stiffness of the shock absorber body 1 is adjusted by rotating the adjustable valve stem device. When the operator rotates the torsion block 5, air is introduced into the valve connector 22 on the connection port 20. The air moves within the limit sleeve 27 through the push-pull rod 7, thereby controlling the opening and closing of the valve 10. As the piston 9 moves within the fork tube 8, the second air chamber 13, under the action of the piston 9 and the valve 10, adjusts the air pressure to the first air chamber 12, thereby stiffening the shock absorber body 1. When pre-adjustment is not required, after fully deploying the adjustable valve stem device, the shock absorber body 1 responds to irregular road vibrations, allowing the piston 9 to move freely within the fork tube 8. When the piston 9 contacts the shock absorber spring 18, the abutment block 17 intervenes to adjust the compression of the shock absorber spring 18, thereby optimizing the shock absorption performance.

[0044] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and improved ideas of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. Air suspension motorcycle front shock absorber, characterized in that, include: A shock absorber body, wherein a fork tube is connected to the inner wall of one end of the shock absorber body, a top cover is provided at the end of the shock absorber body away from the fork tube, an end cover is provided on the top of the top cover, an adjustable valve stem device is provided at one end of the end cover, and the adjustable valve stem device is located inside the top cover, and the adjustable valve stem device includes: a push-pull nut, a torsion block, a limit sleeve, and a push-pull rod, the torsion block is located inside the top cover, and a push-pull nut is provided inside the top cover, one end of the push-pull nut is fixedly connected to the limit sleeve, the limit sleeve is movably installed in the fork tube, and a push-pull rod is provided inside the limit sleeve; A first screw is provided in the middle of the end cover, and the first screw is fixedly installed in the push-pull nut; The end of the adjustable valve stem device is fixedly connected to a piston, and the piston is located in the fork tube. A valve port is provided on the piston, and the piston divides the interior of the fork tube into a first air chamber and a second air chamber.

2. The air suspension motorcycle front shock absorber according to claim 1, characterized in that: A connecting port is provided on one side of the fork tube, and a thread is provided on the inner wall of the connecting port, and a valve joint is connected to the inner thread of the connecting port.

3. The air suspension motorcycle front shock absorber according to claim 2, characterized in that: A fixing sleeve is provided at the inner end of the fork tube, a matching block is fixedly connected to the fixing sleeve, a fixing nut is provided in the fixing sleeve, a second screw is provided in the fixing nut, and the second screw passes through the end of the fork tube.

4. The air suspension motorcycle front shock absorber according to claim 3, characterized in that: A stop block is provided in the fork tube at one end away from the fixed sleeve, and the stop block is located in the first air chamber. One end of the stop block is fixedly connected to a shock-absorbing spring.

5. The air suspension motorcycle front shock absorber according to claim 4, characterized in that: A first sealing ring is provided on the piston, and a second sealing ring is provided on the peripheral wall connecting the top cover and the shock absorber body.

6. The air suspension motorcycle front shock absorber according to claim 5, characterized in that: A limiting ring is provided at the position where the end of the shock absorber body contacts the fork tube, a sealing ring is provided on one side of the limiting ring, and a buckle is provided on the side of the limiting ring away from the sealing ring.

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