Rear shock absorber of motorcycle

Abstract

The utility model discloses a motorcycle rear shock absorber which comprises a damping cylinder barrel, a piston rod is arranged in the damping cylinder barrel, one end of the piston rod is in threaded connection with an upper installation ring through a second nut, the surface of the damping cylinder barrel is sleeved with a damping spring used for damping, and the two ends of the damping spring are connected with the upper installation ring and an adjusting base respectively. When the damping spring is compressed and the piston rod moves downwards, oil, injected from the oil storage barrel, in the damping cylinder barrel is extruded, then damping force is generated, further movement of the piston rod can be hindered through the damping force, and when the upper mounting ring moves and makes contact with one end of the damping cylinder barrel, the piston rod can be stopped from moving. According to the rear shock absorber, the buffer pad can be in contact with the damping cylinder barrel, so that direct contact between the upper mounting ring and the damping cylinder barrel is avoided, abrasion and collision generated when the upper mounting ring and the damping cylinder barrel are in direct contact can be prevented through the isolation effect of the buffer pad, damage is avoided, and the service life of the rear shock absorber is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of motorcycle shock absorbers, and in particular relates to a motorcycle rear shock absorber. Background Art

[0002] The function of the rear shock absorber: The rear shock absorber is used to support the weight of the frame, alleviate the vibration and impact of uneven roads on the motorcycle, quickly attenuate the vibration, improve riding comfort, reduce the dynamic stress of various parts of the vehicle body, and extend the service life of the vehicle.

[0003] Existing rear shock absorbers for motorcycles generally include a shock-absorbing spring, an upper connecting piece and a protective sleeve. A piston rod is connected between the upper connecting piece and the protective sleeve, and the shock-absorbing spring is sleeved on the surface of the piston rod. When the motorcycle frame vibrates and impacts due to bumps, the upper connecting piece can be squeezed downward and the shock-absorbing spring can be compressed by the upper connecting piece, thereby achieving shock absorption of the frame. However, when the motorcycle bumps with great force, the strong impact force causes the distance between the upper connecting piece and the protective sleeve to shorten, and contact and collision occur. Long-term contact and friction may cause increased wear between the upper connecting piece and the protective sleeve, and damage during collision, thereby greatly reducing the service life of the rear shock absorber. Utility Model Content

[0004] The purpose of the utility model is to provide a motorcycle rear shock absorber to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical solution: a motorcycle rear shock absorber, comprising:

[0006] A damping cylinder, wherein a piston rod is arranged in the damping cylinder and one end of the piston rod is threadedly connected to an upper mounting ring through a second nut, one end of the damping cylinder is connected to an adjusting seat and a compression valve seat is arranged in the adjusting seat, a damping spring for shock absorption is mounted on the surface of the damping cylinder and both ends of the damping spring are respectively connected to the upper mounting ring and the adjusting seat, a buffer pad is connected in the upper mounting ring, and when the damping spring is squeezed, the upper mounting ring is driven to move closer to the damping cylinder and contact the damping cylinder through the buffer pad, so that when the upper mounting ring contacts the damping cylinder, the buffer pad is used for buffering, thereby reducing the impact force when the upper mounting ring contacts the damping cylinder.

[0007] Preferably, an oil storage cylinder is provided in the damping cylinder, a spin-on cover is connected to the surface of the oil storage cylinder, and an oil seal is provided at the connection between the spin-on cover and the oil storage cylinder.

[0008] Preferably, a guide seat is connected to the surface of the piston rod and one end located in the damping cylinder, and the guide seat is slidably connected to a slide groove provided in the damping cylinder. A restoring valve seat is also provided on the surface of the piston rod, and a damping spring is connected between the restoring valve seat and the guide seat, and an elastic gasket is provided at the connection between the restoring valve seat and the piston rod.

[0009] Preferably, a piston is threadedly connected to one side of the restoring valve seat via a third nut, and a piston plate and a restoring valve plate are provided at the connection between the piston and the restoring valve seat.

[0010] Preferably, a gasket is provided at the bottom of the restoring valve plate, and a piston ring is provided on the surface of the piston.

[0011] Preferably, a first nut is connected inside the adjustment seat and a lower bushing is provided at the connection between the first nut and the adjustment seat.

[0012] Preferably, an upper bushing is provided inside the upper mounting ring and a shock-absorbing pad is provided on the surface of the upper bushing.

[0013] Compared with the prior art, the utility model has the following beneficial effects: the upper mounting ring is connected to the upper end of the frame, and the adjusting seat is connected to the lower end of the frame. When the motorcycle bumps and the frame vibrates and impacts, when the upper mounting ring moves toward one end close to the damping cylinder, the upper mounting ring presses the damping spring downward and drives the piston rod to move into the damping cylinder. Therefore, when the damping spring is compressed and the piston rod moves downward, the piston rod can slide in the damping cylinder and squeeze the oil injected from the oil storage cylinder into the damping cylinder, thereby changing the pressure and flow state of the oil in the damping cylinder, and then generating a damping force. The damping force will hinder the further movement of the piston rod, thereby cooperating with the damping spring to reduce the vibration and impact of the motorcycle. When the upper mounting ring moves and contacts one end of the damping cylinder, the buffer pad can contact the damping cylinder, thereby avoiding direct contact between the upper mounting ring and the damping cylinder. Through the isolation effect of the buffer pad, wear and collision caused by direct contact between the upper mounting ring and the damping cylinder can be prevented, damage can be avoided, and the service life of the rear shock absorber can be extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model.

[0015] In the figure: 1. oil storage cylinder; 2. piston rod; 3. spin-on cover; 4. oil seal; 5. guide seat; 6. damping spring; 7. restoring valve seat; 8. elastic gasket; 9. piston plate; 10. restoring valve plate; 11. gasket; 12. piston ring; 13. piston; 14. damping cylinder; 15. compression valve seat; 16. upper bushing; 17. shock-absorbing pad; 18. upper mounting ring; 19. buffer pad; 20. shock-absorbing spring; 21. adjustment seat; 22. lower bushing; 23. first nut; 24. second nut; 25. third nut. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] The utility model provides Figure 1 A motorcycle rear shock absorber is shown, comprising:

[0018] A damping cylinder 14, wherein a piston rod 2 is arranged inside the damping cylinder 14, and one end of the piston rod 2 is threadedly connected to an upper mounting ring 18 through a second nut 24, one end of the damping cylinder 14 is connected to an adjusting seat 21, and a compression valve seat 15 is arranged inside the adjusting seat 21, a damping spring 20 for shock absorption is mounted on the surface of the damping cylinder 14, and both ends of the damping spring 20 are respectively connected to the upper mounting ring 18 and the adjusting seat 21, and a buffer pad 19 is connected inside the upper mounting ring 18, and when the damping spring 20 is squeezed, the upper mounting ring 18 is driven to move closer to the damping cylinder 14 and contact the damping cylinder 14 through the buffer pad 19, so that when the upper mounting ring 18 contacts the damping cylinder 14, the buffer pad 19 is used for buffering, thereby reducing the impact force when the upper mounting ring 18 contacts the damping cylinder 14.

[0019] An oil storage cylinder 1 is arranged in the damping cylinder 14 , a screw-on cover 3 is connected to the surface of the oil storage cylinder 1 , and an oil seal 4 is arranged at the connection between the screw-on cover 3 and the oil storage cylinder 1 , so that oil can be prevented from leaking out of the oil storage cylinder 1 .

[0020] A guide seat 5 is connected to one end of the piston rod 2 on the surface and located in the damping cylinder 14. The guide seat 5 is slidably connected to the slide groove provided in the damping cylinder 14. A restoring valve seat 7 is also provided on the surface of the piston rod 2, and a damping spring 6 is connected between the restoring valve seat 7 and the guide seat 5. An elastic gasket 8 is provided at the connection between the restoring valve seat 7 and the piston rod 2. The guide seat 5 is slidably connected to the slide groove, so that when the piston rod 2 slides in the damping cylinder 14, the guide seat 5 slides in the slide groove, thereby guiding the moving direction of the piston rod 2 and enhancing the stability of the movement of the piston rod 2.

[0021] A piston 13 is screwed onto one side of the restoring valve seat 7 via a third nut 25 , and a piston plate 9 and a restoring valve plate 10 are provided at the connection between the piston 13 and the restoring valve seat 7 .

[0022] A gasket 11 is provided at the bottom of the restoring valve plate 10 , and a piston ring 12 is provided on the surface of the piston 13 . The piston ring 12 seals the oil inside the damping cylinder 14 to prevent the oil from leaking between the piston 13 and the damping cylinder 14 .

[0023] The adjusting seat 21 is connected with a first nut 23 and a lower bushing 22 is provided at the connection between the first nut 23 and the adjusting seat 21 . The lower bushing 22 can disperse the pressure generated by the first nut 23 during the tightening process to prevent the adjusting seat 21 from being damaged due to excessive local pressure.

[0024] An upper bushing 16 is arranged inside the upper mounting ring 18 and a shock-absorbing pad 17 is arranged on the surface of the upper bushing 16. After the upper mounting ring 18 is connected to the frame, the shock-absorbing pad 17 can absorb the impact force and vibration of the frame when encountering bumps, thereby protecting the components from damage.

[0025] The motorcycle rear shock absorber is connected to the upper end of the frame through the upper mounting ring 18, and the adjustment seat 21 is connected to the lower end of the frame. When the motorcycle bumps and the frame vibrates and impacts, the upper mounting ring 18 moves toward the end close to the damping cylinder 14, and the upper mounting ring 18 presses the damping spring 20 downward and drives the piston rod 2 to move into the damping cylinder 14. Therefore, when the damping spring 20 is compressed and the piston rod 2 moves downward, the piston rod 2 can slide in the damping cylinder 14 and squeeze the oil injected from the oil storage cylinder 1 in the damping cylinder 14, thereby changing the damping cylinder 14. 4, thereby generating a damping force, which will hinder the further movement of the piston rod 2, thereby cooperating with the shock absorbing spring 20 to reduce the vibration and impact of the motorcycle. When the upper mounting ring 18 moves and contacts one end of the damping cylinder 14, the buffer pad 19 can contact the damping cylinder 14, thereby avoiding direct contact between the upper mounting ring 18 and the damping cylinder 14. Through the isolation effect of the buffer pad 19, the wear and collision caused by the direct contact between the upper mounting ring 18 and the damping cylinder 14 can be prevented, thereby avoiding damage, thereby extending the service life of the rear shock absorber.

[0026] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A motorcycle rear shock absorber, characterized in that: include: A damping cylinder (14), wherein a piston rod (2) is arranged in the damping cylinder (14), and one end of the piston rod (2) is screwed to an upper mounting ring (18) via a second nut (24), one end of the damping cylinder (14) is connected to an adjustment seat (21), and a compression valve seat (15) is arranged in the adjustment seat (21), and a damping spring (20) for damping is sleeved on the surface of the damping cylinder (14), and two ends of the damping spring (20) are respectively connected to the upper mounting ring (18) and the adjustment seat (21). The entire seat (21) is connected, and a buffer pad (19) is connected inside the upper mounting ring (18). When the shock absorbing spring (20) is squeezed, the upper mounting ring (18) is driven to move close to the damping cylinder (14) and contact the damping cylinder (14) through the buffer pad (19), so that when the upper mounting ring (18) contacts the damping cylinder (14), the buffer pad (19) provides buffering, thereby reducing the impact force when the upper mounting ring (18) contacts the damping cylinder (14).

2. A motorcycle rear shock absorber according to claim 1, characterized in that: An oil storage cylinder (1) is arranged inside the damping cylinder (14), a spin-on cover (3) is connected to the surface of the oil storage cylinder (1), and an oil seal (4) is arranged at the connection between the spin-on cover (3) and the oil storage cylinder (1).

3. A motorcycle rear shock absorber according to claim 1, characterized in that: A guide seat (5) is connected to one end of the surface of the piston rod (2) and located in the damping cylinder (14); the guide seat (5) is slidably connected to a slide groove provided in the damping cylinder (14); a restoring valve seat (7) is also provided on the surface of the piston rod (2); a damping spring (6) is connected between the restoring valve seat (7) and the guide seat (5); and an elastic gasket (8) is provided at the connection between the restoring valve seat (7) and the piston rod (2).

4. A motorcycle rear shock absorber according to claim 3, characterized in that: A piston (13) is screwed to one side of the restoring valve seat (7) via a third nut (25), and a piston plate (9) and a restoring valve plate (10) are provided at the connection between the piston (13) and the restoring valve seat (7).

5. A motorcycle rear shock absorber according to claim 4, characterized in that: A gasket (11) is provided at the bottom of the restoring valve plate (10), and a piston ring (12) is provided on the surface of the piston (13).

6. A motorcycle rear shock absorber according to claim 1, characterized in that: A first nut (23) is connected inside the adjustment seat (21), and a lower bushing (22) is provided at the connection between the first nut (23) and the adjustment seat (21).

7. A motorcycle rear shock absorber according to claim 1, characterized in that: An upper liner (16) is arranged inside the upper mounting ring (18), and a shock-absorbing pad (17) is arranged on the surface of the upper liner (16).

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