Front shock absorber of motorcycle

Abstract

The utility model belongs to the technical field of motorcycle parts, and particularly relates to a motorcycle front shock absorber which comprises an outer cylinder and an inner cylinder, one end of the outer cylinder is closed, the other end of the outer cylinder is slidably provided with the inner cylinder, one end of the inner cylinder is provided with a head, a piston rod is arranged in the outer cylinder, one end of the piston rod is detachably and fixedly arranged at the closed end of the outer cylinder, and the other end of the piston rod is provided with a damping piston. The damping piston is arranged in the inner cylinder in a sliding mode, a buffer spring is further arranged in the inner cylinder, one end of the buffer spring abuts against the choke plug, the other end of the buffer spring abuts against the damping piston, a positioning bush and an oil seal are clamped in one end of the inner cylinder, the oil seal is arranged close to the damping piston, and a damping spring is arranged between the damping piston and the oil seal and arranged on the piston rod in a sleeving mode. According to the front shock absorber, the buffer spring is arranged in the inner cylinder, the buffer spring is protected, the service life of the buffer spring is prolonged, multiple shock absorption is achieved through cooperation of the buffer spring and the damping spring and movement of the damping piston in the inner cylinder, the shock absorption effect is improved, and meanwhile the service life of the front shock absorber is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to motorcycle parts technical field especially relates to a motorcycle front shock absorber. BACKGROUND

[0002] The motorcycle shock absorber improves the driving comfort by absorbing the vibration generated during driving. The motorcycle shock absorber is divided into front shock absorber and rear shock absorber. The rear shock absorber is installed on the rear wheel of the vehicle and is mainly used to reduce the vibration of the rear wheel to provide better driving comfort and safety. It improves the stability of the vehicle by adjusting the spring and hydraulic system. The rear shock absorber focuses more on durability, so it is usually made of more solid material. The front shock absorber is usually installed on the front wheel of the motorcycle and is mainly responsible for absorbing the vibration generated during driving. Its main function is to control the stability and comfort of the vehicle. It maintains the balance of the vehicle by adjusting the damping of the spring and hydraulic system. The front shock absorber is made of light and elastic material to facilitate the adjustment of the balance of the vehicle.

[0003] The current front shock absorber is simple and mainly includes a damping cylinder and a shock absorbing rod. The outer side of the damping cylinder has a spring seat. One end of the shock absorbing spring is fixed on the shock absorbing rod, and the other end is fixed on the spring seat. The damping cylinder and the shock absorbing spring play a damping effect. This structure has poor damping effect, and the spring is exposed for a long time. The spring is greatly affected by external factors, resulting in a short service life of the spring.

[0004] In view of the above problems, the utility model file provides a motorcycle front shock absorber. UTILITY MODEL CONTENT

[0005] The utility model provides a motorcycle front shock absorber, improves the damping effect, and improves the service life of the front shock absorber.

[0006] The utility model provides the following technical scheme:

[0007] A motorcycle front shock absorber, comprising an outer cylinder and an inner cylinder, one end of the outer cylinder is closed, the other end is slidably provided with the inner cylinder, the end of the inner cylinder away from the outer cylinder is provided with a plug, a piston rod is arranged in the outer cylinder along the length direction, one end of the piston rod is detachably and fixedly arranged at the closed end of the outer cylinder, the other end is provided with a damping piston with a through hole, the damping piston is slidably arranged in the inner cylinder, a buffer spring is further arranged in the inner cylinder, one end of the buffer spring abuts against the plug, the other end abuts against the damping piston, a positioning bushing and an oil seal are clamped in the inner end of the inner cylinder close to the outer cylinder, and the oil seal is arranged close to the damping piston, a damping spring is arranged between the damping piston and the oil seal, and the damping spring, the positioning bushing and the oil seal are arranged on the piston rod.

[0008] Further, the outer side wall of the outer cylinder is sleeved with a bellows, one end of the bellows is clamped on the outer cylinder, and the other end is fastened on the outer surface of the inner cylinder through a hoop.

[0009] Further, the outer cylinder is provided with a clamping groove, and a reflective block is clamped in the clamping groove.

[0010] Further, the bottom surface of the clamping groove is provided with an adhesive layer, and the reflective block is fixed in the clamping groove through the adhesive layer.

[0011] Further, the outer side wall of the outer cylinder is further sleeved with a protective cylinder, the outer side wall of the outer cylinder is provided with an annular fastening position groove near both ends, the inner side wall of the protective cylinder is provided with a first clamping block, and the protective cylinder is fixed on the outer cylinder through cooperation of the first clamping block and the fastening position groove.

[0012] Further, the inner side wall of one end of the bellows is provided with a second clamping block, and one end of the bellows is fixed on the outer cylinder through cooperation of the second clamping block and the fastening position groove.

[0013] Further, the inner side wall of one end of the bellows is provided with a second clamping block, and one end of the bellows is fixed on the outer cylinder through cooperation of the second clamping block and the fastening position groove.

[0014] Further, the end face of the closed end of the outer cylinder is provided with a through hole, the through hole is provided with a connecting bolt, the end of the piston rod is provided with a threaded hole matched with the connecting bolt, the piston rod is fixed in the outer cylinder through cooperation of the connecting bolt and the threaded hole, and the end of the piston rod is sleeved with a sealing sleeve.

[0015] In the utility model, the buffer spring is arranged in the inner cylinder, the buffer spring is protected, the service life of the buffer spring is improved, multiple shock absorptions are realized through cooperation of the buffer spring and the damping spring and movement of the damping piston in the inner cylinder, and the service life of the front shock absorber is improved while the shock absorption effect is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 A front shock absorber of a motorcycle provided by the utility model is shown in the schematic view of the main view and the partial section structure.

[0017] REFERENCE SIGNS:

[0018] 1, inner cylinder; 2, outer cylinder; 201, clamping groove; 202, fastening position groove; 3, plug; 4, piston rod; 401, threaded hole; 5, damping piston; 6, buffer spring; 7, damping spring; 8, oil seal; 9, positioning bushing; 10, bellows; 1001, second clamping block; 11, hoop; 12, reflective block; 13, adhesive layer; 14, protective cylinder; 1401, first clamping block; 15, sealing ring; 16, piston seal; 17, sealing sleeve; 18, connecting bolt. DETAILED DESCRIPTION

[0019] The utility model embodiment is described below with reference to the drawings.

[0020] In the description of the utility model embodiment, it should be explained that, unless otherwise explicitly specified and limited, the terms "connection", "installation" should be understood in a broad sense, for example, "connection" can be detachable connection, or can be non-detachable connection; can be direct connection, or can be indirect connection through intermediate medium. In addition, "communication" can be direct communication, or can be indirect communication through intermediate medium. Among them, "fixing" means connecting with each other and the relative position relationship after connection does not change. The orientation terms mentioned in the utility model embodiment, such as "inner", "outer", "top", "bottom" and the like, are only the direction of reference drawing, therefore, the orientation terms used are for better and clearer illustration and understanding of the utility model embodiment, and cannot be understood as indicating or implying that the device or element indicated must have a specific orientation, be constructed and operated in a specific orientation, therefore, cannot be understood as a limitation on the utility model embodiment.

[0021] In the utility model embodiment, the terms "first", "second" are only for description purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more features.

[0022] In the utility model embodiment, "and / or" is only a description of the association relationship of the associated object, which means that there can be three kinds of relationships, for example, A and / or B can mean that there are three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are in an "or" relationship.

[0023] In this specification, the reference "one embodiment" or "some embodiments" and the like means that in one or more embodiments of the utility model, a specific feature, structure or characteristic described in combination with the embodiment is included. Therefore, the statements "in one embodiment", "in some embodiments", "in other some embodiments", "in another some embodiments" and the like appearing in different places in this specification are not necessarily all referring to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized. The terms "include", "contain", "have" and their variants mean "include but are not limited to", unless otherwise specifically emphasized.

[0024] Embodiment:

[0025] Reference Figure 1As shown, a motorcycle front shock absorber, comprising an outer cylinder 2 and an inner cylinder 1, one end of the outer cylinder 2 is closed, the other end is slidably provided with the inner cylinder 1, the end of the inner cylinder 1 away from the outer cylinder 2 is provided with a plug 3, the outer cylinder 2 is provided with a piston rod 4 along the length direction, one end of the piston rod 4 is detachably and fixedly provided at the closed end of the outer cylinder 2, the other end is provided with a damping piston 5 with a through hole, the damping piston 5 is slidably provided in the inner cylinder 1, the inner cylinder 1 is further provided with a buffer spring 6, one end of the buffer spring 6 abuts against the plug 3, the other end abuts against the damping piston 5, the inner cylinder 1 is internally clamped with a positioning bushing 9 and an oil seal 8 at the end close to the outer cylinder 2, and the oil seal 8 is provided close to the damping piston 5, a damping spring 7 is provided between the damping piston 5 and the oil seal 8, and the damping spring 7, the positioning bushing 9 and the oil seal 8 are sleeved on the piston rod 4.

[0026] One end of the inner cylinder 1 is closed by the plug 3, and the other end is located in the outer cylinder 2, one end of the outer cylinder 2 is closed, and the connection between the inner cylinder 1 and the outer cylinder 2 is sealed, the inner cylinder 1 and the outer cylinder 2 are filled with shock absorbing oil, when subjected to vibration, the inner cylinder 1 moves towards the inside of the outer cylinder 2, extruding the buffer spring 6 and the damping spring 7, a part of the vibration is buffered by the contraction of the buffer spring 6 and the damping spring 7, at the same time, the shock absorbing oil in the outer cylinder 2 enters the inner cylinder 1 through the damping piston 5, due to the viscosity of the shock absorbing oil, the energy of the vibration can be converted into heat energy, the energy of the vibration is consumed through buffering and conversion, achieving the effect of shock absorption. The buffer spring 6 is arranged inside the inner cylinder 1, avoiding the influence of external environmental factors on the structure and strength of the buffer spring 6, thereby improving the service life of the buffer spring 6 and ensuring the normal work of the front shock absorber.

[0027] The outer side wall of the outer cylinder 2 is sleeved with a corrugated pipe 10, one end of the corrugated pipe 10 is clamped on the outer cylinder 2, and the other end is fastened to the outer surface of the inner cylinder 1 by a hoop 11.

[0028] The space between the outer cylinder 2 and the inner cylinder 1 is closed by the corrugated pipe 10, preventing dust or other impurities from entering and affecting the normal use of the shock absorbing oil filled in the outer cylinder 2 and the inner cylinder 1, and the corrugated pipe 10 can stretch and contract to meet the movement of the inner cylinder 1 in the outer cylinder 2.

[0029] The outer cylinder 2 is provided with a clamping groove 201, and a reflective block 12 is clamped in the clamping groove 201.

[0030] The product is a front shock absorber, when driving at night, the reflective block 12 can clearly observe the motorcycle for the oncoming vehicles, increasing the safety of the motorcycle driving.

[0031] The bottom surface of the clamping groove 201 is provided with an adhesive layer 13, and the reflective block 12 is fixed in the clamping groove 201 by the adhesive layer 13.

[0032] The adhesive layer 13 improves the firmness of the installation of the reflective block 12, avoiding the reflective block 12 from falling off due to long-term jolting of the motorcycle.

[0033] The protective cylinder 14 is sleeved on the outer side wall of the outer cylinder 2, and the outer side wall of the outer cylinder 2 is provided with an annular fastening position groove 202 near both ends. The inner side wall of the protective cylinder 14 is provided with a first clamping block 1401, and the protective cylinder 14 is fixed on the outer cylinder 2 through cooperation of the first clamping block 1401 and the fastening position groove 202.

[0034] The outer cylinder 2 is protected by the protective cylinder 14, so as to avoid the influence of collision on the structure of the outer cylinder 2, so that the inner cylinder 1 cannot slide in the outer cylinder 2 and cannot play a damping effect.

[0035] The first clamping block 1401 is clamped in the tibial positioning groove, so as to fix the protective cylinder 14 on the outer cylinder 2, and the outer cylinder 2 is convenient to disassemble and replace.

[0036] The inner side wall of one end of the bellows 10 is provided with a second clamping block 1001, and one end of the bellows 10 is fixed on the outer cylinder 2 through cooperation of the second clamping block 1001 and the fastening position groove 202.

[0037] The bellows 10 is positioned through cooperation of the second clamping block 1001 and the fastening position groove 202, so as to facilitate disassembly and replacement of the bellows 10. Since the bellows 10 is in the external environment for a long time, the bellows 10 is prone to rupture, so that the service life of the bellows 10 is short. The bellows 10 is replaced to ensure that the bellows 10 can seal the connection between the inner cylinder 1 and the outer cylinder 2 and protect the normal use of the front shock absorber.

[0038] The inner side wall of one end of the outer cylinder 2 connected with the bellows 10 is further clamped with a sealing ring 15 and a plug seal 16, and the inner cylinder 1 is slidably arranged in the sealing ring 15 and the plug seal 16.

[0039] The sealing ring 15 and the plug seal 16 prevent the shock oil filled in the inner cylinder 1 and the outer cylinder 2 from leaking from the connection, meet the sliding sealing of the inner cylinder 1 in the outer cylinder 2, and also prevent dust and impurities in the external environment from entering the inside of the outer cylinder 2 and the inner cylinder 1, so as to ensure the normal operation of the shock absorber.

[0040] A through hole is formed in the end face of the closed end of the outer cylinder 2, a connecting bolt 18 is arranged in the through hole, a threaded hole 401 matched with the connecting bolt 18 is formed in the end of the piston rod 4, the piston rod 4 is fixed in the outer cylinder 2 through cooperation of the connecting bolt 18 and the threaded hole 401, and a sealing sleeve 17 is sleeved on the end of the piston rod 4.

[0041] The piston rod 4 is positioned through the connecting bolt 18, so as to facilitate installation of the piston rod 4, and the sealing sleeve 17 improves the sealing performance of the connection between the piston rod 4 and the outer cylinder 2, prevents the shock oil in the outer cylinder 2 from leaking from the connection, and affects the normal use of the shock absorber.

[0042] In use, the inner cylinder 1 and the outer cylinder 2 are filled with damping oil, and if the motorcycle encounters bumps during driving, the content will slide to the inside of the outer cylinder 2, compressing the damping oil in the outer cylinder 2, and at the same time compressing the buffer spring 6 and the damping spring 7. The copper buffer spring 6 and the damping spring 7 offset part of the vibration, and the damping oil in the outer cylinder 2 is extruded from the damping piston 5 into the inner cylinder 1, and the damping oil has high viscosity and generates heat during flow. The mechanical kinetic energy of the vibration is converted into heat energy, which is dissipated into the air through the shock absorber, achieving the buffering of the vibration. The buffer spring 6 and the damping spring 7 are arranged inside the shock absorber, avoiding the influence of external environmental factors on the service life of the buffer spring 6 and the damping spring 7, thereby improving the service life of the shock absorber. If it is night driving, the light emitting block is reflected, which can help the oncoming vehicles on the road to find the motorcycle in time, thereby improving the safety of motorcycle driving.

[0043] In actual use, since the protective cylinder 14 is fixed on the outside of the outer cylinder 2 by the first clamping block 1401 and the tight fixing groove 202, the user can replace the protective cylinder 14 of different colors or shapes according to personal preferences.

[0044] The corrugated pipe 10 is fixed at one end by the hoop 11 and is fixed at the other end by the second clamping block 1001 and the tight fixing groove 202, which is convenient for dismounting and replacing the corrugated pipe 10.

[0045] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. In the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A front shock absorber for a motorcycle, characterized by, It includes outer cylinder and inner cylinder, one end of the outer cylinder is closed, the other end is provided with the inner cylinder, the inner cylinder is provided with the blind end away from the outer cylinder, the piston rod is arranged along the length direction of the outer cylinder, one end of the piston rod is detachably and fixedly arranged at the closed end of the outer cylinder, the other end is provided with the damping piston with through hole, the damping piston is arranged in the inner cylinder, the inner cylinder is also provided with the buffer spring, one end of the buffer spring abuts against the blind end, the other end abuts against the damping piston, the inner cylinder is provided with the positioning bushing and the oil seal inside the end close to the outer cylinder, and the oil seal is arranged close to the damping piston, the damping spring is arranged between the damping piston and the oil seal, the damping spring, the positioning bushing and the oil seal are arranged on the piston rod.

2. A front shock absorber for a motorcycle according to claim 1, characterized in that The outer side wall of the outer cylinder is sleeved with the bellows, one end of the bellows is clamped on the outer cylinder, and the other end is fastened on the outer surface of the inner cylinder through the hoop.

3. A front shock absorber for a motorcycle according to claim 2, characterized in that The outer side wall of the outer cylinder is provided with the clamping groove, and the reflective block is clamped in the clamping groove.

4. A front shock absorber for a motorcycle according to claim 3, characterised in that The bottom surface of the clamping groove is provided with the adhesive layer, and the reflective block is fixed in the clamping groove through the adhesive layer.

5. A front shock absorber for a motorcycle according to claim 2, characterized in that, The outer side wall of the outer cylinder is also sleeved with the protective cylinder, the outer side wall of the outer cylinder is provided with the annular fastening position groove close to both ends, the inner side wall of the protective cylinder is provided with the first clamping block, and the protective cylinder is fixed on the outer cylinder through the first clamping block and the fastening position groove.

6. A front shock absorber for a motorcycle according to claim 5, characterised in that, The inner side wall of one end of the bellows is provided with the second clamping block, and one end of the bellows is fixed on the outer cylinder through the second clamping block and the fastening position groove.

7. A front shock absorber for a motorcycle according to claim 6, characterised in that The inner side wall of the end of the outer cylinder connected with the bellows is also clamped with the sealing ring and the plug seal, and the inner cylinder is arranged in the sealing ring and the plug seal.

8. A front shock absorber for a motorcycle according to claim 1, characterized in that, The end face of the closed end of the outer cylinder is provided with the through hole, the through hole is provided with the connecting bolt, the end of the piston rod is provided with the threaded hole matched with the connecting bolt, the piston rod is fixed in the outer cylinder through the connecting bolt and the threaded hole, and the end of the piston rod is sleeved with the sealing sleeve.

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