Motorcycle rear shock absorber

Abstract

The utility model provides a motorcycle rear shock absorber, which relates to the technical field of motorcycle rear shock absorbers, and comprises a first fixed block, a piston rod fixed at the bottom end of the first fixed block, a piston cylinder slidably connected to the outer surface of the piston rod, and a second fixed block fixed at the bottom end of the piston cylinder. The motorcycle rear shock absorber can achieve the first shock absorption effect through the first shock absorption spring, can achieve the second shock absorption effect through the piston rod driving the first fixed plate to squeeze the telescopic rod and the second shock absorption spring, can achieve the third shock absorption effect through the first fixed plate pushing the sliding rod to squeeze the third shock absorption spring, effectively improves the shock absorption effect of the motorcycle when it is running, and can also move on the piston cylinder by rotating the fixed ring, and the movement of the fixed ring can compress and relax the first shock absorption spring, thereby playing the role of adjusting the preload value of the first shock absorption spring, making it more convenient to adjust the preload value of the shock absorption spring.

Description

Technical Field

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

[0002] Shock absorbers are mainly used to suppress the shock caused by the rebound of the spring after absorbing the shock and the impact from the road surface. When passing through uneven roads, although the shock-absorbing spring can filter the vibration of the road surface, the spring itself will still have reciprocating motion, and the shock absorber is used to suppress this spring jump.

[0003] A novel motorcycle rear shock absorber disclosed in the Chinese patent application publication CN215521761U applies force to the shock absorber spring along its expansion and contraction direction when adjusting the preload value of the shock absorber spring, thereby preventing the shock absorber spring from being damaged and extending the service life of the shock absorber spring.

[0004] In the solution of the above patent, shock absorption is only performed by shock absorbing springs. When a motorcycle is traveling on a bumpy road, the shock absorbing springs are easily compressed to the limit. In this case, the buffering capacity of the shock absorbing springs will be weakened, which may cause the shock absorbing springs to be unable to effectively absorb impacts, increasing driving risks, and the structure for adjusting the preload value of the shock absorbing springs is too complicated, reducing convenience in use. Utility Model Content

[0005] The utility model provides a motorcycle rear shock absorber, which can effectively absorb impacts through multiple shock absorptions and can conveniently adjust the preload value of the shock absorption spring.

[0006] The utility model is realized through the following technical scheme: a motorcycle rear shock absorber, comprising a first fixed block, a piston rod fixed at the bottom end of the first fixed block, a piston cylinder slidably connected to the outer surface of the piston rod and a second fixed block fixed at the bottom end of the piston cylinder, wherein a shock absorbing component is arranged inside the piston cylinder.

[0007] The shock absorbing assembly includes a first fixed plate fixed to an end of the piston rod located inside the piston cylinder and a fixed cylinder fixed to the inner bottom wall of the piston cylinder, and the outer surface of the first fixed plate is slidably connected to the inner wall of the piston cylinder, a sliding rod is fixed to the bottom end of the first fixed plate, and the bottom end of the sliding rod is located inside the fixed cylinder, a second fixed plate is fixed to the bottom end of the sliding rod, and the outer surface of the second fixed plate is slidably connected to the inner wall of the fixed cylinder, a third shock absorbing spring is arranged inside the fixed cylinder, and the third shock absorbing spring is located below the second fixed plate, a telescopic rod is fixed to the bottom end of the first fixed plate, and the bottom end of the telescopic rod is fixed to the inner bottom wall of the piston cylinder.

[0008] Furthermore, a second shock-absorbing spring is sleeved on the outer surface of the telescopic rod, which can increase the buffering force of the telescopic rod and further enhance the shock-absorbing effect of the device.

[0009] Furthermore, a limiting block is fixed on the inner wall of the fixing tube, and the limiting block is located above the second fixing plate, so as to limit the position of the second fixing plate.

[0010] Furthermore, a pulley is hinged on the inner wall of the fixing cylinder, and the pulley is located above the limiting block, which can make the movement of the sliding rod smoother.

[0011] Furthermore, the outer surface of the piston cylinder is provided with a thread, and the outer surface of the piston cylinder is connected to a fixing ring through the thread. The fixing ring can be moved on the piston cylinder by rotating it, and the movement of the fixing ring can compress and relax the first shock-absorbing spring, thereby adjusting the preload value of the first shock-absorbing spring.

[0012] Furthermore, a first shock-absorbing spring is sleeved on the outer surface of the piston cylinder, and the first shock-absorbing spring is located between the first fixing block and the second fixing block, so as to reduce shock to the device.

[0013] Furthermore, the ends of the first fixing block and the second fixing block which are away from each other are fixed with axle seats, and a circular hole is opened inside each axle seat. The device can be fixed on the motorcycle by using a pin to pass through the axle seat through the circular hole.

[0014] The utility model provides a motorcycle rear shock absorber, which has the following beneficial effects:

[0015] 1. The rear shock absorber of the motorcycle can achieve the first shock absorption effect through the first shock absorption spring, can achieve the second shock absorption effect through the piston rod driving the first fixed plate to squeeze the telescopic rod and the second shock absorption spring, can achieve the third shock absorption effect through the first fixed plate pushing the sliding rod to squeeze the third shock absorption spring, and effectively improves the shock absorption effect when the motorcycle is running.

[0016] 2. The motorcycle rear shock absorber moves on the piston cylinder by rotating the fixing ring. The movement of the fixing ring can compress and relax the first shock-absorbing spring, thereby adjusting the preload value of the first shock-absorbing spring, making it more convenient to adjust the preload value of the shock-absorbing spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0018] Figure 2 It is a cross-sectional schematic diagram of the piston cylinder in the utility model;

[0019] Figure 3It is a cross-sectional schematic diagram of the fixing cylinder in the utility model;

[0020] Figure 4 For the utility model Figure 3 A schematic diagram of the enlarged structure in the middle.

[0021] Description of Reference Numerals

[0022] 1. The first fixed block;

[0023] 2. shock absorbing assembly; 201. first fixed plate; 202. telescopic rod; 203. fixed cylinder; 204. slide rod; 205. second fixed plate; 206. third shock absorbing spring; 207. limit block; 208. pulley; 209. second shock absorbing spring;

[0024] 3. Piston rod;

[0025] 4. Piston cylinder; 401, thread;

[0026] 5. Fixed ring; 6. Second fixed block; 7. First shock-absorbing spring; 8. Axle seat; 9. Round hole. DETAILED DESCRIPTION

[0027] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 The utility model embodiment provides a motorcycle rear shock absorber, including a first fixed block 1, a piston rod 3 fixed at the bottom end of the first fixed block 1, a piston cylinder 4 slidably connected to the outer surface of the piston rod 3 and a second fixed block 6 fixed at the bottom end of the piston cylinder 4, and a shock absorbing assembly 2 is arranged inside the piston cylinder 4.

[0028] The outer surface of the piston cylinder 4 is sleeved with a first shock-absorbing spring 7, and the first shock-absorbing spring 7 is located between the first fixed block 1 and the second fixed block 6, which can reduce shock to the device. The first fixed block 1 and the second fixed block 6 are fixed with an axle seat 8 at one end away from each other, and a circular hole 9 is opened inside each axle seat 8. A pin is used to pass through the axle seat 8 through the circular hole 9, so that the device can be fixed on the motorcycle.

[0029] The shock absorbing assembly 2 includes a first fixed plate 201 fixed to one end of the piston rod 3 located inside the piston cylinder 4 and a fixed cylinder 203 fixed to the inner bottom wall of the piston cylinder 4, and the outer surface of the first fixed plate 201 is slidably connected to the inner wall of the piston cylinder 4, a sliding rod 204 is fixed to the bottom end of the first fixed plate 201, and the bottom end of the sliding rod 204 is located inside the fixed cylinder 203, a second fixed plate 205 is fixed to the bottom end of the sliding rod 204, and the outer surface of the second fixed plate 205 is slidably connected to the inner wall of the fixed cylinder 203.

[0030] A third shock-absorbing spring 206 is provided inside the fixed cylinder 203, and the third shock-absorbing spring 206 is located below the second fixed plate 205. A telescopic rod 202 is fixed to the bottom end of the first fixed plate 201, and the bottom end of the telescopic rod 202 is fixed to the inner bottom wall of the piston cylinder 4. A second shock-absorbing spring 209 is sleeved on the outer surface of the telescopic rod 202, which can increase the buffering force of the telescopic rod 202 and further increase the shock-absorbing effect of the device.

[0031] When vibration occurs, the movement of the piston rod 3 will drive the first fixed block 1 to squeeze the first shock-absorbing spring 7. The elastic force generated by the first shock-absorbing spring 7 can play a first level of buffering. The movement of the piston rod 3 will push the first fixed plate 201 to squeeze the telescopic rod 202 and the second shock-absorbing spring 209, so that they generate corresponding elastic force. The elastic force can be used to buffer the vibration they receive, which plays a second level of buffering effect. The movement of the first fixed plate 201 will push the sliding rod 204, and the sliding rod 204 will push the second fixed plate 205 to squeeze the third shock-absorbing spring 206. The elastic force of the third shock-absorbing spring 206 can play a third level of buffering, effectively improving the shock-absorbing effect of the motorcycle when it is running.

[0032] Please refer to Figure 3 and Figure 4 A limit block 207 is fixed on the inner wall of the fixed cylinder 203, and the limit block 207 is located above the second fixed plate 205, which can limit the position of the second fixed plate 205. A pulley 208 is hinged on the inner wall of the fixed cylinder 203, and the pulley 208 is located above the limit block 207, which can make the movement of the slide rod 204 smoother.

[0033] Please refer to Figure 1 A thread 401 is provided on the outer surface of the piston cylinder 4, and a fixing ring 5 is connected to the outer surface of the piston cylinder 4 through the thread 401. The fixing ring 5 can be moved on the piston cylinder 4 by rotating it. The movement of the fixing ring 5 can compress and relax the first shock-absorbing spring 7, thereby adjusting the preload value of the first shock-absorbing spring 7.

[0034] When the utility model is in use, the device is fixed on the motorcycle by using a pin body to pass through the round hole 9 and the axle seat 8. When the motorcycle encounters bumps during driving, the piston rod 3 will move into the piston cylinder 4. The movement of the piston rod 3 will drive the first fixing block 1 to squeeze the first shock-absorbing spring 7, so that it generates a corresponding elastic force, and the first level of shock absorption can be buffered by its elastic force. The movement of the piston rod 3 will also push the first fixing plate 201 to squeeze the telescopic rod 202 and the second shock-absorbing spring 209, and the second level of shock absorption can be buffered by its elastic force. The movement of a fixed plate 201 will push the sliding rod 204, and the sliding rod 204 will push the second fixed plate 205 to squeeze the third shock-absorbing spring 206. The elastic force of the third shock-absorbing spring 206 can act as a third buffer, effectively improving the shock-absorbing effect of the motorcycle when it is running. When the damping needs to be adjusted, the fixing ring 5 can be moved on the piston cylinder 4 by rotating it. The movement of the fixing ring 5 can compress and relax the first shock-absorbing spring 7, thereby adjusting the preload value of the first shock-absorbing spring 7, so that the shock-absorbing spring can be adjusted conveniently.

[0035] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A motorcycle rear shock absorber, comprising a first fixing block (1), a piston rod (3) fixed to the bottom end of the first fixing block (1), a piston cylinder (4) slidably connected to the outer surface of the piston rod (3), and a second fixing block (6) fixed to the bottom end of the piston cylinder (4), characterized in that: A shock absorbing assembly (2) is arranged inside the piston cylinder (4); The shock absorbing assembly (2) comprises a first fixing plate (201) fixed to one end of the piston rod (3) located inside the piston cylinder (4) and a fixing cylinder (203) fixed to the inner bottom wall of the piston cylinder (4), wherein the outer surface of the first fixing plate (201) is slidably connected to the inner wall of the piston cylinder (4), a sliding rod (204) is fixed to the bottom end of the first fixing plate (201), and the bottom end of the sliding rod (204) is located inside the fixing cylinder (203), and the sliding rod (204) is fixed to the bottom end of the first fixing plate (201). A second fixing plate (205) is fixed to the bottom end, and the outer surface of the second fixing plate (205) is slidably connected to the inner wall of the fixing cylinder (203); a third shock-absorbing spring (206) is arranged inside the fixing cylinder (203), and the third shock-absorbing spring (206) is located below the second fixing plate (205); a telescopic rod (202) is fixed to the bottom end of the first fixing plate (201), and the bottom end of the telescopic rod (202) is fixed to the inner bottom wall of the piston cylinder (4).

2. A motorcycle rear shock absorber according to claim 1, characterized in that: A second shock-absorbing spring (209) is sleeved on the outer surface of the telescopic rod (202).

3. A motorcycle rear shock absorber according to claim 1, characterized in that: A limit block (207) is fixed on the inner wall of the fixed cylinder (203), and the limit block (207) is located above the second fixed plate (205).

4. A motorcycle rear shock absorber according to claim 3, characterized in that: A pulley (208) is hingedly connected to the inner wall of the fixed cylinder (203), and the pulley (208) is located above the limiting block (207).

5. A motorcycle rear shock absorber according to claim 1, characterized in that: The outer surface of the piston cylinder (4) is provided with a thread (401), and the outer surface of the piston cylinder (4) is connected to a fixing ring (5) via the thread (401).

6. A motorcycle rear shock absorber according to claim 1, characterized in that: The outer surface of the piston cylinder (4) is sleeved with a first shock absorbing spring (7), and the first shock absorbing spring (7) is located between the first fixing block (1) and the second fixing block (6).

7. A motorcycle rear shock absorber according to claim 1, characterized in that: An axle seat (8) is fixed to the ends of the first fixing block (1) and the second fixing block (6) that are away from each other, and a circular hole (9) is provided inside each axle seat (8).

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