Motorcycle center rear shock absorber

Abstract

The utility model discloses a motorcycle center rear shock absorber which comprises a shock absorption oil storage cylinder, and one end of the outer surface of the shock absorption oil storage cylinder is connected with an iron spring seat used for limiting and supporting the bottom of an elastic piece in a clamped mode. One face of the iron spring seat is provided with a rotary adjusting seat which is connected to the exterior of the damping oil storage cylinder in a threaded and sleeving mode and used for adjusting and supporting the iron spring seat, a rubber protective cover is arranged at one end of the plastic inner sleeve and attached to the surface of the portion, exposed outside, of the damping oil storage cylinder, and meanwhile a cleaning brush is arranged on the rubber protective cover. In the working process of the shock absorber, the shock-absorbing inner sleeve replaces the plastic inner sleeve to stretch out and draw back in the shock-absorbing oil storage cylinder, so that a gap between the shock-absorbing inner sleeve and the plastic inner sleeve can be sealed and shielded by the rubber shield, and dust and fine particles entering the shock absorber are reduced; and the cleaning brush slides on the surface of the shock absorption oil storage cylinder in the stretching and retracting process of the shock absorber, and dust and fine particles attached to the surface can be swept and removed.

Description

Technical Field

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

[0002] The main function of motorcycle shock absorbers is to provide buffering. Without them, even if there is a small bump on the road, the impact on the user is very large, which not only makes the driver feel uncomfortable, but also causes operational errors and endangers personal safety. However, the existing motorcycle rear shock absorbers are large in size, small in stroke, high in production cost, poor in shock absorption effect, poor in comfort, poor in sealing, easy to leak oil, and inconvenient to use. Therefore, in order to avoid the shortcomings of the prior art, it is necessary to improve the prior art.

[0003] To this end, a motorcycle rear shock absorber with a bulletin number of "CN216642933U" includes an oil storage cylinder, an outer spring and an upper joint, a piston rod is installed in the oil storage cylinder, a lower valve seat, an upper valve seat and a buffer spring are installed on the outer side of the lower part of the piston rod from bottom to top, a piston is installed on the outer diameter of the lower valve seat and the upper valve seat, the piston is inserted into the inner side of the oil storage cylinder, a composite bushing is installed on the outer diameter of the piston, a valve plate group and a flat pad are installed on the top and bottom of the piston, a first flat pad, an oil seal ring and a second flat pad are installed on the inner hole of the top of the oil storage cylinder from bottom to top, the bottom end of the buffer spring abuts the top of the upper valve seat, and the top end of the buffer spring abuts the bottom of the first flat pad. Thus, the structure is simple, the working stroke can reach more than 30 mm when the total length is within 200 mm, the volume is small, the stroke is large, the production cost is low, the shock absorption effect is good, the use comfort is good, the sealing is good, and the use is convenient.

[0004] However, for the above-mentioned motorcycle rear shock absorber, although a piston rod is installed in the oil storage cylinder, the outer side of the lower part of the piston rod is successively installed with a lower valve seat, an upper valve seat and a buffer spring from bottom to top, and a piston is sleeved on the outer side of the lower valve seat and the upper valve seat, and the piston sleeve is arranged on the inner side of the oil storage cylinder, there are still the following obvious defects during use: However, one end of the piston rod is exposed to the outside, and during the extension and retraction process of the piston rod, particles and dust will adhere to the end exposed to the outside, and as the piston rod continues to extend and retract, the particles will enter the sealing bushing, thereby generating friction between the piston rod and the bushing, and then under the continuous movement of the piston rod, an active gap will be generated between the piston rod and the bushing, which will cause the piston rod to shake unsteadily and cause deformation during operation. Utility Model Content

[0005] The purpose of the utility model is to provide a central rear shock absorber for a motorcycle to solve the problems raised in the above background technology.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solution: a motorcycle central rear shock absorber, comprising:

[0007] A shock-absorbing oil storage cylinder, one end of the outer surface of which is clamped with an iron spring seat for supporting the bottom limit of the elastic member, one side of which is provided with a rotating adjustment seat threadedly sleeved on the outside of the shock-absorbing oil storage cylinder for adjusting and supporting the iron spring seat, one end of which is sleeved with a shock-absorbing main spring, and one end of the shock-absorbing oil storage cylinder sealed with a lower lifting ring seat fixed by welding;

[0008] A shock-absorbing inner sleeve, wherein a plastic inner sleeve is inserted into the shock-absorbing inner sleeve and is movably sleeved on the outside of one end of a shock-absorbing oil storage cylinder, a shock-absorbing piston rod extending to the inside of the plastic inner sleeve is fixed in the middle of the plastic inner sleeve, a blocking and anti-collision cone block is fixed to one end of the shock-absorbing piston rod, a shock-absorbing piston part is fixed to one end of the shock-absorbing piston rod inserted into the inside of the shock-absorbing oil storage cylinder, and a rubber shield is provided at one end of the plastic inner sleeve that is movably sleeved on the outside of the shock-absorbing oil storage cylinder for cleaning the surface of the shock-absorbing oil storage cylinder and movably sealing it.

[0009] Preferably, one side of the shock-absorbing oil storage cylindrical cylinder is sealed with an iron dustproof cylinder cover through which the shock-absorbing piston rod can move, and one end of the shock-absorbing oil storage cylindrical cylinder is provided with a sealing positioning piece for sealing the telescopic positioning of the shock-absorbing piston, which can reduce the entry of dust and particulate matter and ensure that the telescopic movement of the shock-absorbing piston rod is more stable.

[0010] Preferably, the rubber shield is fixed by a groove limit sleeve provided on the surface of one end of the plastic inner sleeve, and a cleaning brush for cleaning dust on the surface of the shock-absorbing oil storage cylinder is provided at one end of the rubber shield, which can clean the dust adhered to the outside of the shock-absorbing oil storage cylinder to prevent dust from entering the inside of the shock absorber.

[0011] Preferably, one side of the blocking anti-collision cone block provided on the shock-absorbing piston rod is connected to an anti-collision spring member sleeved on the surface of the shock-absorbing piston rod, thereby reducing the phenomenon of extreme impact damage between the plastic inner sleeve and the shock-absorbing oil storage cylinder.

[0012] Preferably, the shock-absorbing piston rod is fixed through a nut embedded in one side of the plastic inner sleeve, and the outer end of the shock-absorbing piston rod is connected to a piston rod seat, and an aluminum upper hanging ring is provided on the piston rod seat to achieve a fixed connection between the shock-absorbing piston rod and the aluminum upper hanging ring.

[0013] Preferably, an oil storage compression valve seat is provided inside the shock-absorbing oil storage cylinder, and an oil storage compression valve is installed on the oil storage compression valve seat to control the inlet and outlet amounts of the hydraulic oil.

[0014] Preferably, a semicircular groove is provided on one side of the rotary adjustment seat corresponding to the iron spring seat, and auxiliary balls are movably provided between the inner sides of the semicircular grooves, which is conducive to push-up adjustment and positioning of the rotary adjustment seat.

[0015] Preferably, the shock-absorbing main spring is sleeved on the outside after the plastic inner sleeve and the shock-absorbing oil storage cylindrical tube are movably combined, and the two ends of the shock-absorbing main spring are respectively limited on the iron spring seat and the shock-absorbing inner sleeve, so as to realize the shock-absorbing effect of the shock absorber on the motorcycle during driving.

[0016] Preferably, the aluminum upper hanging ring and the lower hanging ring seat are penetrated by inner protective sleeves for protecting the connection between the inner wall of the aluminum upper hanging ring and the lower hanging ring seat and the motorcycle frame, so that the shock absorber can reduce the vibration of the motorcycle while driving and improve the driving comfort of the motorcycle.

[0017] Preferably, after the shock-absorbing inner sleeve and the plastic inner sleeve are sleeved together, they are locked by a compression ring seat threadedly arranged at one end of the shock-absorbing inner sleeve to ensure that the sleeved combination between the two is stable and firm.

[0018] Compared with the prior art, the technical effects and advantages of the utility model are as follows: the central rear shock absorber of the motorcycle is provided with a rubber shield arranged at one end of the plastic inner sleeve, and the rubber shield is fitted on the surface of the shock-absorbing oil storage cylinder leaking to the outside, and at the same time, a cleaning brush is arranged on the rubber shield. During the operation of the shock absorber, the shock-absorbing inner sleeve replaces the plastic inner sleeve in the extension and retraction of the shock-absorbing oil storage cylinder, so that the rubber shield can seal and shield the gap between the two, thereby reducing the entry of dust and fine particles into the shock absorber, and the cleaning brush slides on the surface of the shock-absorbing oil storage cylinder during the extension and retraction of the shock absorber, so as to sweep and remove the dust and fine particles attached to the surface, thereby reducing the problem of dust entering and adhering to the piston rod and causing extension and retraction wear.

[0019] By means of the rotating adjustment seat threaded on the shock-absorbing oil storage cylinder and the fitting and limiting support of the rotating adjustment seat on the iron spring seat, and the setting of the auxiliary ball movably embedded between the two, the rotating adjustment seat can push the iron spring seat to move on the shock-absorbing oil storage cylinder during rotation, so that the shock-absorbing main spring can be elastically scaled, thereby adjusting the hardness of the shock-absorbing main spring, and then adjusting the telescopic hardness of the entire shock absorber, further improving the convenience of the hardness of the shock absorber. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the main cross-sectional structure of the shock absorber of the utility model.

[0022] In the figure: 1. shock-absorbing oil storage cylinder; 2. iron spring seat; 3. rotary adjustment seat; 4. shock-absorbing main spring; 5. lower lifting ring seat; 6. shock-absorbing inner sleeve; 7. plastic inner sleeve; 8. shock-absorbing piston rod; 9. shock-absorbing piston member; 10. rubber shield; 11. iron dust-proof cylinder cover; 12. sealing positioning member; 13. cleaning brush; 14. piston rod seat; 15. aluminum upper lifting ring; 16. oil storage compression valve seat; 17. oil storage compression valve; 18. auxiliary ball; 19. inner protective bushing; 20. anti-collision spring member; 21. blocking anti-collision cone block. DETAILED DESCRIPTION

[0023] 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.

[0024] See also Figure 1-2 The utility model provides a technical solution: a motorcycle central rear shock absorber, comprising:

[0025] A shock-absorbing oil storage cylindrical cylinder 1, one end of the outer surface of the shock-absorbing oil storage cylindrical cylinder 1 is clamped with an iron spring seat 2 for bottom limit support of the elastic member, and an outward protrusion is provided at the center position of one side of the iron spring seat 2, so that the shock-absorbing main spring 4 can be sleeved on the outside of the protrusion to avoid the phenomenon of extrusion and friction with the outer wall of the shock-absorbing oil storage cylindrical cylinder 1, one side of the iron spring seat 2 is provided with a rotating adjustment seat 3 threadedly sleeved on the outside of the shock-absorbing oil storage cylindrical cylinder 1 to adjust and support the iron spring seat 2, and the rotating adjustment seat 3 can be rotated by an auxiliary wrench to push the iron spring seat 2 to adjust and move its position on the shock-absorbing oil storage cylindrical cylinder 1, one end of the shock-absorbing oil storage cylindrical cylinder 1 is sleeved with a shock-absorbing main spring 4, and the sealed end of the shock-absorbing oil storage cylindrical cylinder 1 is provided with a welded and fixed lower lifting ring seat 5 to achieve connection and support with the main structural parts of the motorcycle;

[0026] The shock-absorbing inner sleeve 6 has a plastic inner sleeve 7 inserted into the shock-absorbing inner sleeve 6 and movably sleeved on the outside of one end of the shock-absorbing oil storage cylinder 1. The plastic inner sleeve 7 is sleeved on the outside by the shock-absorbing inner sleeve 6 to ensure the stability of the plastic inner sleeve 7 during expansion and contraction, and is not prone to cracking and damage. A shock-absorbing piston rod 8 extending to the inside of the plastic inner sleeve 7 is fixed in the middle of the plastic inner sleeve 7, so that the shock-absorbing inner sleeve 6 can always maintain a vertical expansion and contraction state. A blocking anti-collision cone block 21 is fixed at one end of the shock-absorbing piston rod 8, which can prevent the shock absorber from being in contact with the shock absorber due to the large gravity limit during the expansion and contraction process. The shock-absorbing oil storage cylinder 1 is damaged by impact. The shock-absorbing piston rod 8 is inserted into the shock-absorbing oil storage cylinder 1 and a shock-absorbing piston member 9 is fixed at one end thereof, so that the shock absorber has better shock-absorbing support strength. A sealing piston ring is movably embedded on the outside of the shock-absorbing piston member 9 and fits tightly with the inner wall of the shock-absorbing oil storage cylinder 1. The plastic inner sleeve 7 is movably sleeved on one end of the outside of the shock-absorbing oil storage cylinder 1 and is provided with a rubber shield 10 for cleaning and movably sealing the surface of the shock-absorbing oil storage cylinder 1, so as to reduce the phenomenon that external dust and particles enter the shock absorber and cause greater friction.

[0027] The shock-absorbing oil storage cylinder 1 is sealed with an iron dustproof cylinder cover 11 through which the shock-absorbing piston rod 8 can move, so as to achieve the effect of secondary dust protection for the shock absorber, so that the shock absorber can be effectively protected from dust. A sealing positioning member 12 is provided inside one end of the shock-absorbing oil storage cylinder 1 for sealing the shock-absorbing piston for telescopic positioning, so that the shock-absorbing piston rod 8 can always be kept in a horizontal and vertical state during the telescopic process. The rubber shield 10 is fixed by a groove limit sleeve provided on the surface of one end of the plastic inner sleeve 7, so that the rubber shield 1 0 It should be replaced in time during the later use, and one end of the rubber shield 10 is provided with a cleaning brush 13 for cleaning the dust on the surface of the shock-absorbing oil storage cylinder 1, which can clean the dust and particles attached to the surface of the shock-absorbing oil storage cylinder 1, and reduce the dust and particles from being brought into the inside during the extension and contraction of the shock absorber. One side of the blocking anti-collision cone block 21 arranged on the shock-absorbing piston rod 8 is connected to an anti-collision spring member 20 sleeved on the surface of the shock-absorbing piston rod 8, so as to avoid the phenomenon of collision after the shock absorber reaches the limit of its extension and contraction range.

[0028] The shock-absorbing piston rod 8 is fixed through a nut embedded in one side of the plastic inner sleeve 7, and the outer end of the shock-absorbing piston rod 8 is connected to a piston rod seat 14, which can allow the shock-absorbing piston rod 8 to retract and contract synchronously with the shock-absorbing inner sleeve 6, and the piston rod seat 14 is provided with an aluminum upper hanging ring 15 to achieve connection with the main frame of the motorcycle. The interior of the shock-absorbing oil storage cylinder 1 is provided with an oil storage compression valve seat 16, and the oil storage compression valve seat 16 is installed with an oil storage compression valve 17 to effectively control the inlet and outlet oil volume of the hydraulic oil and ensure the normal operation of the shock absorber. The rotating adjustment seat 3 is provided with a semicircular groove on the side corresponding to the iron spring seat 2, and an auxiliary ball 18 is movably provided between the inner sides of the semicircular groove, so that the rotating adjustment seat 3 can rotate smoothly on one side of the iron spring seat 2 to adjust the hardness of the shock-absorbing main spring 4.

[0029] The shock-absorbing main spring 4 is sleeved on the outside after the plastic inner sleeve 7 and the shock-absorbing oil storage cylindrical tube 1 are movably combined, and the two ends of the shock-absorbing main spring 4 are respectively limited on the iron spring seat 2 and the shock-absorbing inner sleeve 6. The aluminum upper hanging ring 15 and the lower hanging ring seat 5 are penetrated by an inner protective sleeve 19 for protecting the connection between the inner wall of the aluminum upper hanging ring 15 and the lower hanging ring seat 5 and the motorcycle frame, thereby reducing the gap wear between the shock absorber and the main frame of the motorcycle. After the shock-absorbing inner sleeve 6 is sleeved and combined with the plastic inner sleeve 7, it is locked by a compression ring seat threaded at one end of the shock-absorbing inner sleeve 6 to ensure that the shock absorber exerts a stable shock-absorbing effect on the motorcycle.

[0030] Specifically, when in use, first fix the shock absorber to the position where the shock absorber is installed on the motorcycle main frame through the lower lifting ring seat 5, the aluminum upper lifting ring 15, and the shock absorber. During the driving process of the motorcycle, the shock absorber is continuously retracted and retracted. The retracted and retracted shock absorber inner sleeve 6 and the plastic inner sleeve 7 reciprocate and retract outside the shock-absorbing oil storage cylinder 1, and at the same time, the shock-absorbing piston rod 8 pushes the shock-absorbing piston member 9 to perform hydraulic shock-absorbing retractable support inside the shock-absorbing oil storage cylinder 1. Under the movement of the plastic inner sleeve 7, the rubber shield 10 is driven to seal the gap between the two on the surface of the shock-absorbing oil storage cylinder 1, so as to prevent dust from entering the shock absorber and attaching to the movable and retractable shock-absorbing piston rod 8, and the shock-absorbing piston rod 8 brings dust and particulate matter into the inner sleeve of the iron dustproof cylinder cover 11 to generate friction gap. At the same time, The shock-free piston rod 8 is slightly deformed and bent due to the enlarged gap, so that the dust is blocked outside, and the cleaning brush 13 arranged at one end of the rubber shield 10 can clean the dust and fine particles attached to the surface of the shock-absorbing oil storage cylinder 1 during the extension and contraction of the shock absorber, thereby reducing the dust and fine particles being brought into the interior during the extension and contraction of the shock absorber. Through the rotating adjustment seat 3 screwed on the shock-absorbing oil storage cylinder 1, and the fitting and limiting support of the rotating adjustment seat 3 on the iron spring seat 2, and the auxiliary ball 18 movably embedded between the two, the rotating adjustment seat 3 pushes the iron spring seat 2 to move on the shock-absorbing oil storage cylinder 1 during the rotation process, so that the shock-absorbing main spring 4 can be elastically scaled, thereby realizing the adjustment of the hardness of the shock-absorbing main spring 4, and then the adjustment of the hardness of the entire shock absorber extension and contraction.

[0031] 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 central rear shock absorber, characterized in that: include: A shock-absorbing oil storage cylinder (1), wherein an iron spring seat (2) for supporting the bottom limit of the elastic member is clamped on one end of the outer surface of the shock-absorbing oil storage cylinder (1), and one side of the iron spring seat (2) is provided with a rotation adjustment seat (3) which is threadedly sleeved on the outside of the shock-absorbing oil storage cylinder (1) for adjusting and supporting the iron spring seat (2), a shock-absorbing main spring (4) is sleeved on one end of the shock-absorbing oil storage cylinder (1), and a lower lifting ring seat (5) which is welded and fixed on the sealed end of the shock-absorbing oil storage cylinder (1); A shock-absorbing inner sleeve (6) is inserted into the shock-absorbing inner sleeve (6) and a plastic inner sleeve (7) is movably sleeved on the outside of one end of the shock-absorbing oil storage cylinder (1). A shock-absorbing piston rod (8) is fixed in the middle of the plastic inner sleeve (7) and extends into the inside of the plastic inner sleeve (7). A blocking anti-collision cone block (21) is fixed to one end of the shock-absorbing piston rod (8). A shock-absorbing piston member (9) is fixed to one end of the shock-absorbing piston rod (8) that penetrates into the inside of the shock-absorbing oil storage cylinder (1). A rubber protective cover (10) is provided at one end of the plastic inner sleeve (7) that is movably sleeved on the outside of the shock-absorbing oil storage cylinder (1) for cleaning the surface of the shock-absorbing oil storage cylinder (1) and movably sealing it.

2. A motorcycle central rear shock absorber according to claim 1, characterized in that: One side of the shock-absorbing oil storage cylinder (1) is sealedly connected to an iron dustproof cylinder cover (11) through which the shock-absorbing piston rod (8) can move, and one end of the shock-absorbing oil storage cylinder (1) is provided with a sealing positioning member (12) for telescopically positioning and sealing the shock-absorbing piston.

3. The motorcycle central rear shock absorber according to claim 1, characterized in that: The rubber shield (10) is fixed by means of a groove provided on the surface of one end of the plastic inner sleeve (7), and a cleaning brush (13) is provided at one end of the rubber shield (10) for cleaning dust from the surface of the shock-absorbing oil storage cylinder (1).

4. The motorcycle central rear shock absorber according to claim 1, characterized in that: One side of the blocking anti-collision cone block (21) provided on the shock-absorbing piston rod (8) is connected to an anti-collision spring component (20) sleeved on the surface of the shock-absorbing piston rod (8).

5. The motorcycle central rear shock absorber according to claim 1, characterized in that: The shock-absorbing piston rod (8) is fixed through a nut embedded in one side of the plastic inner sleeve (7), and the outer end of the shock-absorbing piston rod (8) is connected to a piston rod seat (14), and an aluminum upper hanging ring (15) is provided on the piston rod seat (14).

6. The motorcycle central rear shock absorber according to claim 1, characterized in that: An oil storage compression valve seat (16) is provided inside the shock-absorbing oil storage cylindrical tube (1), and an oil storage compression valve (17) is installed on the oil storage compression valve seat (16).

7. The motorcycle central rear shock absorber according to claim 1, characterized in that: The rotating adjustment seat (3) is provided with a semicircular groove on one side corresponding to the iron spring seat (2), and an auxiliary ball (18) is movably provided between the inner sides of the semicircular groove.

8. The motorcycle central rear shock absorber according to claim 1, characterized in that: The shock-absorbing main spring (4) is sleeved on the outside after the plastic inner sleeve (7) and the shock-absorbing oil storage cylindrical tube (1) are movably assembled, and the two ends of the shock-absorbing main spring (4) are respectively limited and pressed on the iron spring seat (2) and the shock-absorbing inner sleeve (6).

9. The motorcycle central rear shock absorber according to claim 5, characterized in that: The aluminum upper hanging ring (15) and the lower hanging ring seat (5) are penetrated by an inner protective sleeve (19) for protecting the connection between the inner wall of the aluminum upper hanging ring (15), the lower hanging ring seat (5) and the motorcycle frame.

10. The motorcycle central rear shock absorber according to claim 1, characterized in that: The shock-absorbing inner sleeve (6) and the plastic inner sleeve (7) are sleeved and assembled and then locked by a pressure ring seat threadedly arranged at one end of the shock-absorbing inner sleeve (6).

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