A motorcycle rear shock absorber with adjustable spring preloading

Abstract

The utility model discloses a kind of rear shock absorber of motorcycle with adjustable spring pre-pressing, it is related to motorcycle parts field, including shock absorber connecting base, the outer wall of shock absorber connecting base is provided with pre-pressing adjusting block, the inside of shock absorber connecting base is opened with base built-in groove, the right side of pre-pressing adjusting block is fixedly connected with transmission shaft, transmission shaft rotates and is penetrated into the inside of base built-in groove and is rotatably connected with the inner wall of base built-in groove, the pre-pressing of the spring is realized by rotating pre-pressing adjusting block, the distance between transmission ring and limiting plate is adjusted by the mutual cooperation between the two bevel gears, shock absorbing spring is compressed, so that, reach the pre-pressing of the spring can be matched with different load, avoid shock absorbing bottom or too hard, further more, the damage situation caused to equipment, reach shock absorber adapts different riding conditions, give and take comfort, controllability and the service life of shock absorbing system.

Description

Technical Field

[0001] This utility model relates to the field of motorcycle parts, and in particular to an adjustable spring preload motorcycle rear shock absorber. Background Technology

[0002] The rear shock absorber is an important component of the motorcycle chassis suspension system. Its main function is to reduce vehicle vibration. When the motorcycle encounters uneven road surfaces and vibrates during riding, the rear shock absorber can absorb and mitigate these vibrations. When the motorcycle's rear wheel encounters a road bump and is impacted, the flow of oil in the hydraulic damper generates resistance, which plays a damping role, thereby achieving the purpose of shock absorption.

[0003] Traditional motorcycle rear shock absorbers cannot adjust their damping mechanism in real time according to actual load and road conditions. This results in a significant reduction in the effectiveness of the shock absorber. For example, when riding with two people or carrying luggage, the load increases. If the preload is insufficient, the spring will be over-compressed, and the shock absorber is prone to bottoming out. This causes the bumps to be directly transmitted to the motorcycle. The spring cannot bear part of the load in advance, and the effective working stroke of the shock absorber cannot be maintained, which can easily lead to bottoming out and damage to the device. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an adjustable spring preload motorcycle rear shock absorber, which solves the problem mentioned in the background art that the shock absorber cannot be adjusted in real time according to the actual load and road conditions, leading to easy damage to the shock absorber.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an adjustable spring preload motorcycle rear shock absorber, comprising a shock absorber connecting base, a preload adjustment block provided on the outer wall of the shock absorber connecting base, a base internal groove provided inside the shock absorber connecting base, a drive shaft fixedly connected to the right side of the preload adjustment block, the drive shaft rotatably penetrating into the interior of the base internal groove and rotatably connected to the inner wall of the base internal groove, two first bevel gears fixedly sleeved on the outer wall of one end of the drive shaft located inside the base internal groove, a bidirectional threaded rod provided inside the base internal groove corresponding to the positions of the two first bevel gears, a second bevel gear fixedly connected to the top of each of the two bidirectional threaded rods, the two second bevel gears meshing with the two first bevel gears respectively, the two bidirectional threaded rods rotatably penetrating out of the bottom of the shock absorber connecting base, a threaded sleeve threadedly sleeved on the outer wall of one end of each of the two bidirectional threaded rods located at the bottom of the shock absorber connecting base, and a drive ring fixedly connected to the bottom end of each of the two threaded sleeves.

[0006] As a further technical solution of this utility model, a hydraulic damper is fixedly connected to the bottom of the shock absorber connecting base, and a connecting gasket is fixedly sleeved on the outer wall of the bottom end of the hydraulic damper. The connecting gasket is slidably sleeved on the outer wall of the two threaded sleeves, and the connecting gasket is positioned above the transmission ring.

[0007] As a further technical solution of this utility model, a protective sleeve is fixedly connected to the bottom end of the shock absorber connecting base. The protective sleeve has a cavity inside, the hydraulic damper is disposed inside the protective sleeve, and the bottom end of the protective sleeve is fixedly sleeved on the outer wall of the connecting gasket.

[0008] As a further technical solution of this utility model, the telescopic end of the hydraulic damper is fixedly connected to a limiting plate, and a shock-absorbing spring is sleeved on the outer wall of the telescopic end of the hydraulic damper. The two ends of the shock-absorbing spring are fixedly connected to the abutting ends of the transmission ring and the limiting plate, respectively.

[0009] As a further technical solution of this utility model, a cross groove is provided on the left side surface of the pre-pressure adjusting block, a trapezoidal transmission block is slidably connected to the inner wall of the cross groove, a trapezoidal connecting plate is provided on the left side of the cross groove, and transmission shafts are fixedly connected to the front and rear ends of the right side of the trapezoidal connecting plate.

[0010] As a further technical solution of this utility model, the outer wall of the pre-pressure adjusting block is provided with reset slide grooves at both ends of the trapezoidal connecting plate. The two transmission slide shafts slide through the inner walls of the two reset slide grooves respectively, and a transmission plate is fixedly connected to one end of the two transmission slide shafts located on the inner wall of the two reset slide grooves.

[0011] As a further technical solution of this utility model, the outer walls of the two transmission slide shafts are each fitted with a return spring, and the two return springs are respectively fixedly connected to the left side surface of the two transmission plates and the left inner wall of the two return slide grooves. The right side surface of the two transmission plates is fixedly connected with a limit block.

[0012] As a further technical solution of this utility model, the outer wall of the shock absorber connecting base is provided with slots corresponding to the positions of the two limiting blocks, and the two limiting blocks slide on the inner wall of the two slots.

[0013] This invention provides an adjustable spring preload motorcycle rear shock absorber, which has the following advantages compared with the prior art: 1. This design relates to an adjustable spring preload motorcycle rear shock absorber. The device adjusts the distance between the transmission ring and the limiting plate by rotating the preload adjustment block and through the interaction of two bevel gears, thereby compressing the shock absorber spring and adjusting the spring preload to match different loads. This avoids the shock absorber bottoming out or becoming too stiff, which could damage the equipment. The design allows the shock absorber to adapt to different riding conditions, balancing comfort, handling, and the lifespan of the shock absorption system.

[0014] 2. This design provides an adjustable spring preload motorcycle rear shock absorber. A trapezoidal transmission block slides up and down, and its inclined surface contacts the inclined surface of a trapezoidal connecting plate. After a series of transmissions, a limiting block moves out of or into a limiting slot. When the limiting block slides into the limiting slot, it limits the preload adjustment block; conversely, when the limiting block slides out of the limiting slot, the preload adjustment block is released. This device can lock the preload adjustment block during daily riding, preventing it from rotating due to stone impacts or accidental contact, thus reducing safety hazards while riding the motorcycle. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of an adjustable spring preload motorcycle rear shock absorber. Figure 2 A schematic diagram of the connecting base structure of an adjustable spring preload motorcycle rear shock absorber; Figure 3 In an adjustable spring preload motorcycle rear shock absorber Figure 2 Enlarged view of point A in the middle; Figure 4 This is a schematic diagram of the internal structure of the connecting base of an adjustable spring preload motorcycle rear shock absorber. Figure 5 In an adjustable spring preload motorcycle rear shock absorber Figure 4 Enlarged view of section B in the middle.

[0016] In the diagram: 1. Shock absorber connecting base; 2. Hydraulic damper; 3. Connecting gasket; 4. Transmission ring; 5. Protective sleeve; 6. Limiting plate; 7. Shock absorber spring; 8. Preload adjusting block; 9. Cross slide groove; 10. Trapezoidal transmission block; 11. Trapezoidal connecting plate; 12. Transmission slide shaft; 13. Reset slide groove; 14. Transmission plate; 15. Reset spring; 16. Limiting block; 17. Slot; 18. Base built-in slot; 19. Transmission shaft; 20. First bevel gear; 21. Second bevel gear; 22. Bidirectional threaded rod; 23. Threaded sleeve. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-5 This utility model provides a technical solution for an adjustable spring preload motorcycle rear shock absorber: It includes a shock absorber connecting base 1, which provides a fixed base for the entire device. A hydraulic damper 2 is fixedly connected to the bottom of the shock absorber connecting base 1, providing shock absorption. A connecting gasket 3 is fixedly sleeved on the outer wall of the bottom end of the hydraulic damper 2, serving both to connect the device and to provide a limiting function. A transmission ring 4 is located below the connecting gasket 3, used for transmission and adjustment of the device. A protective sleeve 5 is fixedly connected to the bottom end of the shock absorber connecting base 1, and the interior of the protective sleeve 5 is designed with… The protective sleeve 5, which has a cavity, is used to protect the equipment and prevent external factors from directly contacting it. The hydraulic damper 2 is located inside the protective sleeve 5. The bottom end of the protective sleeve 5 is fixedly fitted onto the outer wall of the connecting gasket 3. The telescopic end of the hydraulic damper 2 is fixedly connected to the limit plate 6, which is also used for connecting the equipment. The outer wall of the telescopic end of the hydraulic damper 2 is fitted with a shock-absorbing spring 7, which is used to provide a buffer function for the equipment. The two ends of the shock-absorbing spring 7 are fixedly connected to the abutting ends of the transmission ring 4 and the limit plate 6, respectively. Through the cooperation of the shock-absorbing spring 7 and the hydraulic damper 2, the equipment can have a shock-absorbing and buffering function.

[0019] The outer wall of the shock absorber connecting base 1 is provided with a preload adjustment block 8, which is used to receive and transmit power. A cross groove 9 is provided on the left side surface of the preload adjustment block 8. The cross groove 9 is used to provide a sliding track and, through its cross shape, limits the slider. A trapezoidal transmission block 10 is slidably connected to the inner wall of the cross groove 9. The trapezoidal transmission block 10 is used to receive and transmit power. A trapezoidal connecting plate 11 is provided on the left side of the cross groove 9. The direction of the force can be changed by the engagement of the two trapezoidal inclined surfaces of the trapezoidal transmission block 10 and the trapezoidal connecting plate 11. The front and rear ends of the right side of the trapezoidal connecting plate 11 are fixedly connected with transmission shafts 12. The transmission shafts 12 are used to transmit the force after the direction has been changed. The outer wall of the preload adjustment block 8 is provided with reset grooves 13 at the front and rear ends of the trapezoidal connecting plate 11. The reset grooves 13 are used to provide a sliding track.

[0020] Two drive shafts 12 slide through the inner walls of two reset slide grooves 13 respectively. A drive plate 14 is fixedly connected to one end of each drive shaft 12 located on the inner wall of the two reset slide grooves 13. The drive plate 14 is used to further transmit the force transmitted by the drive shafts 12. A reset spring 15 is sleeved on the outer wall of each drive shaft 12. The rebound force generated by the deformation of the reset spring 15 can make the equipment automatically reset. The two reset springs 15 are fixedly connected to the left side surface of the two drive plates 14 and the left inner wall of the two reset slide grooves 13 respectively.

[0021] Limiting blocks 16 are fixedly connected to the right side surfaces of both transmission plates 14. The outer wall of the shock absorber connecting base 1 is provided with slots 17 corresponding to the positions of the two limiting blocks 16. The two limiting blocks 16 slide on the inner walls of the two slots 17. The cooperation between the limiting blocks 16 and the slots 17 can be used to limit the movement of the equipment.

[0022] The shock absorber connecting base 1 has an internal groove 18, which provides installation space for some equipment. A drive shaft 19 is fixedly connected to the right side of the preload adjustment block 8. The drive shaft 19 is used to transmit the power received by the preload adjustment block 8. The drive shaft 19 rotates through the interior of the internal groove 18 and is rotatably connected to the inner wall of the internal groove 18. Two first bevel gears 20 are fixedly sleeved on the outer wall of one end of the drive shaft 19 inside the internal groove 18. The two first bevel gears 20 are also used to transmit force. A bidirectional threaded rod 22 is provided inside the internal groove 18 corresponding to the positions of the two first bevel gears 20. Through the bidirectional thread on the outer wall of the bidirectional threaded rod 22, the rotation of the object can be converted into linear movement.

[0023] The top ends of the two bidirectional threaded rods 22 are fixedly connected to the second bevel gears 21. The two second bevel gears 21 are respectively meshed with the two first bevel gears 20. The direction of force can be changed by the meshing of the two first bevel gears 20 with the two second bevel gears 21. The two bidirectional threaded rods 22 are rotatably inserted into the interior of the protective sleeve 5 and rotatably connected to the top of the connecting gasket 3.

[0024] Two bidirectional threaded rods 22 are fitted with threaded sleeves 23 on the outer wall of one end inside the protective sleeve 5. Through the threaded relationship between the bidirectional threaded rods 22 and the threaded sleeves 23, the moving parts can be moved in a straight line. The bottom ends of the two threaded sleeves 23 slide through the bottom of the connecting gasket 3, and the bottom ends of the two threaded sleeves 23 are fixedly connected to the transmission ring 4.

[0025] The working principle of this utility model is as follows: When the preload of the motorcycle shock absorber spring needs to be adjusted, firstly, the trapezoidal transmission block 10 is slid downwards. The trapezoidal transmission block 10 contacts the inclined surface of the trapezoidal connecting plate 11, causing the trapezoidal connecting plate 11 to move to the left. The trapezoidal connecting plate 11 synchronously drives the two transmission plates 14 to move through the two transmission shafts 12. The two transmission plates 14 synchronously drive the two limit blocks 16 to slide out of the two slots 17. At this time, the limit function is released. Then, the preload adjustment block 8 is rotated. The preload adjustment block 8 drives the transmission shaft 19 to rotate synchronously. The transmission shaft 19 passes through the first... The meshing between the first bevel gear 20 and the second bevel gear 21 synchronously drives the bidirectional threaded rod 22 to rotate. The bidirectional threaded rod 22 synchronously drives the transmission ring 4 to move up and down through the threaded connection with the threaded sleeve 23. By adjusting the distance between the transmission ring 4 and the limiting plate 6, the shock-absorbing spring 7 is compressed, thereby realizing the pre-pressure adjustment of the equipment. After the adjustment is completed, it is only necessary to control the trapezoidal transmission block 10 to move upward. At this time, the rebound force of the reset spring 15 can push the two limiting blocks 16 into the inside of the slot 17 to limit the pre-pressure adjustment block 8, thereby enabling the equipment to achieve the self-locking function.

[0026] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model are implemented according to conventional methods in the art, unless otherwise specified or limited.

Claims

1. An adjustable spring preload motorcycle rear shock absorber, characterized in that, The device includes a shock absorber connecting base (1), the outer wall of which is provided with a preload adjustment block (8). An internal groove (18) is provided inside the shock absorber connecting base (1). A drive shaft (19) is fixedly connected to the right side of the preload adjustment block (8). The drive shaft (19) rotatably passes through the internal groove (18) and is rotatably connected to the inner wall of the internal groove (18). Two first bevel gears (20) are fixedly sleeved on the outer wall of one end of the drive shaft (19) located inside the internal groove (18). The internal groove (18) corresponds to... Two bidirectional threaded rods (22) are provided at the positions of the two first bevel gears (20). The top ends of the two bidirectional threaded rods (22) are fixedly connected to the second bevel gears (21). The two second bevel gears (21) are respectively meshed with the two first bevel gears (20). The two bidirectional threaded rods (22) rotate through the bottom of the shock absorber connecting base (1). The outer wall of the two bidirectional threaded rods (22) located at the bottom of the shock absorber connecting base (1) is threaded with a threaded sleeve (23). The bottom end of the two threaded sleeves (23) is fixedly connected to a transmission ring (4).

2. The adjustable spring preload motorcycle rear shock absorber according to claim 1, characterized in that, The bottom of the shock absorber connecting base (1) is fixedly connected to a hydraulic damper (2). A connecting gasket (3) is fixedly sleeved on the outer wall of the bottom end of the hydraulic damper (2). The connecting gasket (3) is slidably sleeved on the outer wall of two threaded sleeves (23). The connecting gasket (3) is positioned above the transmission ring (4).

3. The adjustable spring preload motorcycle rear shock absorber according to claim 2, characterized in that, The bottom end of the shock absorber connecting base (1) is fixedly connected to a protective sleeve (5). The protective sleeve (5) has a cavity inside. The hydraulic damper (2) is located inside the protective sleeve (5). The bottom end of the protective sleeve (5) is fixedly sleeved on the outer wall of the connecting gasket (3).

4. The adjustable spring preload motorcycle rear shock absorber according to claim 3, characterized in that, The telescopic end of the hydraulic damper (2) is fixedly connected to the limiting plate (6), and the outer wall of the telescopic end of the hydraulic damper (2) is fitted with a shock-absorbing spring (7). The two ends of the shock-absorbing spring (7) are fixedly connected to the transmission ring (4) and the abutting end of the limiting plate (6), respectively.

5. The adjustable spring preload motorcycle rear shock absorber according to claim 1, characterized in that, The left side surface of the preload adjustment block (8) is provided with a cross groove (9), and a trapezoidal transmission block (10) is slidably connected to the inner wall of the cross groove (9). A trapezoidal connecting plate (11) is provided on the left side of the cross groove (9), and a transmission slide shaft (12) is fixedly connected to both the front and rear ends of the right side of the trapezoidal connecting plate (11).

6. The adjustable spring preload motorcycle rear shock absorber according to claim 5, characterized in that, The outer wall of the preload adjustment block (8) is provided with reset grooves (13) at both ends of the trapezoidal connecting plate (11). The two transmission shafts (12) slide through the inner walls of the two reset grooves (13) respectively. The two transmission shafts (12) are fixedly connected to a transmission plate (14) at one end of the inner wall of the two reset grooves (13).

7. The adjustable spring preload motorcycle rear shock absorber according to claim 5, characterized in that, The outer walls of the two transmission slide shafts (12) are fitted with return springs (15), and the two return springs (15) are fixedly connected to the left side surface of the two transmission plates (14) and the left inner wall of the two return slide grooves (13), respectively. The right side surface of the two transmission plates (14) is fixedly connected with limit blocks (16).

8. The adjustable spring preload motorcycle rear shock absorber according to claim 1, characterized in that, The outer wall of the shock absorber connecting base (1) is provided with slots (17) corresponding to the positions of the two limiting blocks (16), and the two limiting blocks (16) slide on the inner wall of the two slots (17).

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