Motorcycle front shock absorber capable of electrically adjusting spring preload

Abstract

The utility model discloses a motorcycle front shock absorber capable of electrically adjusting spring preload, which comprises a front shock absorber body comprising an outer tube and a shock absorbing spring arranged in the outer tube; the preload adjusting mechanism comprises a fixed seat fixedly connected to the end part of the outer pipe, an adjusting seat which can be driven to be arranged on the fixed seat in a sliding manner, and a driving structure for driving the adjusting seat to slide; the driving structure comprises a base with a liquid storage cavity, a floating piston arranged in the liquid storage cavity and a motor assembly used for driving the floating piston to move so as to change the volume of the liquid storage cavity, a hydraulic adjusting cavity capable of providing acting force for the adjusting base is formed between the adjusting base and the fixing base, and the liquid storage cavity communicates with the hydraulic adjusting cavity through a pipeline. One end of the damping spring is propped against the adjusting seat; the preload of the spring of the front shock absorber of the motorcycle is convenient to adjust, and user experience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of motorcycle shock absorbers, in particular to a motorcycle front shock absorber with electrically adjustable spring preload. Background Art

[0002] Motorcycle front shock absorbers are typically mounted on the front wheel of a motorcycle. They maintain the vehicle's balance by adjusting the damping of the spring and hydraulic system, thereby controlling the vehicle's stability and comfort. To accommodate different rider weights or environmental requirements, most current motorcycle front shock absorber springs have a spring preload adjustment function. However, in existing motorcycle front shock absorber structures, spring preload is generally adjusted manually using specialized tools. With this structure, the adjustment space is limited by the shock absorber mounting structure, resulting in poor adjustment convenience and a poor user experience. Therefore, it is necessary to develop a new motorcycle front shock absorber structure that would improve the convenience of spring preload adjustment and enhance the user experience. Utility Model Content

[0003] In view of this, the purpose of the present invention is to provide a motorcycle front shock absorber with electrically adjustable spring preload, which is convenient for adjusting the spring preload of the motorcycle front shock absorber and helps to improve the user experience.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a motorcycle front shock absorber with electrically adjustable spring preload, comprising: a front shock absorber body, including an outer tube and a shock-absorbing spring arranged in the outer tube; a preload adjustment mechanism, including a fixed seat fixedly connected to the end of the outer tube, an adjustment seat that can be driven to slide on the fixed seat, and a driving structure for driving the adjustment seat to slide; the driving structure includes a base with a liquid storage chamber, a floating piston arranged in the liquid storage chamber, and a motor assembly for driving the floating piston to move to change the volume of the liquid storage chamber, a hydraulic adjustment chamber that can provide a force for the adjustment seat is formed between the adjustment seat and the fixed seat, the liquid storage chamber and the hydraulic adjustment chamber are connected by a pipeline, and one end of the shock-absorbing spring abuts against the adjustment seat.

[0005] Furthermore, the motor assembly includes a rotating motor, a rotating screw, a nut sleeve and a guide sleeve. The guide sleeve is fixedly connected to the base, the nut sleeve is slidably arranged in the guide sleeve with a single degree of freedom, the rotating screw is threadedly connected to the nut sleeve, the output end of the rotating motor is transmission-connected to the rotating screw, and the working end of the nut sleeve can abut against the floating piston.

[0006] Furthermore, the motor assembly further includes a connecting seat, which is detachably connected to the guide sleeve, and the rotating motor is detachably connected to the connecting seat.

[0007] Furthermore, the output shaft of the rotating motor is coaxially arranged with the rotating screw.

[0008] Furthermore, a support bearing is provided at the end of the guide sleeve, and the rotating screw is rotatably provided on the support bearing.

[0009] Furthermore, the rotating motor is a DC motor.

[0010] Furthermore, a protective outer cylinder is sealedly connected to the base, the motor assembly is located in the protective outer cylinder, and an end of the protective outer cylinder away from the base is sealedly connected to a sealing cover.

[0011] Furthermore, an annular groove is provided on the fixing seat, and the adjusting seat is an annular sleeve slidably arranged in the annular groove, and the hydraulic adjustment chamber is formed between the annular sleeve and the annular groove.

[0012] Furthermore, a wear-resistant pad is provided between the adjustment seat and the shock-absorbing spring.

[0013] Furthermore, a liquid inlet communicating with the hydraulic regulating chamber is provided on the outer end surface of the fixing seat, and the pipeline is detachably and sealedly connected to the liquid inlet.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The utility model provides a motorcycle front shock absorber with electrically adjustable spring preload, which has convenient spring preload adjustment and is beneficial to improving user experience; specifically, the motor assembly is controlled to drive the floating piston to move, thereby pushing the adjustment seat to move, and the adjustment seat presses the shock-absorbing spring down to complete the electric adjustment of the spring preload; at the same time, by adopting hydraulic force transmission, the structural reliability and stability can be guaranteed; the liquid storage chamber and the hydraulic adjustment chamber are connected by a pipeline, which is beneficial to arrange the drive structure at a suitable remote position, thereby reducing the restriction on the installation space of the front shock absorber; by arranging the adjustment seat on the fixed seat, the compactness of the structure is guaranteed, and there is no need to change the overall external dimensions of the shock absorber body.

[0016] Other advantages, objectives, and features of the present invention will be described in detail in the following description and, to some extent, will be apparent to those skilled in the art upon examination and study of the following or may be learned from practice of the present invention. The objectives and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the cross-sectional structure of the utility model

[0018] Figure 2 for Figure 1 Structural diagram at A in the middle

[0019] Figure 3 Schematic diagram of the drive structure

[0020] Figure markings: 1-outer tube; 2-shock-absorbing spring; 3-fixed seat; 301-hydraulic adjustment chamber; 302-annular groove; 303-liquid inlet; 4-adjusting seat; 5-base; 6-motor assembly; 601-rotating motor; 602-rotating screw; 603-nut sleeve; 604-guide sleeve; 605-connecting seat; 606-support bearing; 7-pipeline; 8-protective outer cylinder; 9-wear-resistant pad. DETAILED DESCRIPTION

[0021] The following describes the embodiments of the present invention through specific examples. Those skilled in the art can easily understand the other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through different specific embodiments. The details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments are only used to illustrate the basic concept of the present invention. The following embodiments and the features in the embodiments can be combined with each other without conflict.

[0022] See also Figure 1-3 In this embodiment, a motorcycle front shock absorber with electrically adjustable spring preload is disclosed, comprising: a front shock absorber body, comprising an outer tube 1 and a shock-absorbing spring 2 disposed in the outer tube 1. It is understandable that the front shock absorber body also includes a front fork tube, a damping inner tube assembly, etc. This part is the same as the existing motorcycle front shock absorber and will not be described in detail here; a preload adjustment mechanism, comprising a fixing seat 3 fixedly connected to the end of the outer tube 1, an adjustment seat 4 that can be driven to slide on the fixing seat 3, and a driving structure for driving the adjustment seat 4 to slide. Specifically, the fixing seat 3 is threadedly connected to the outer tube 1. end; the driving structure includes a base 5 having a liquid storage chamber 501, a floating piston 502 disposed in the liquid storage chamber 501, and a motor assembly 6 for driving the floating piston 502 to move to change the volume of the liquid storage chamber 501. A hydraulic adjustment chamber 301 is formed between the adjustment seat 4 and the fixed seat 3 to provide a force for the adjustment seat 4. The liquid storage chamber 501 and the hydraulic adjustment chamber 301 are connected by a pipe 7. One end of the shock-absorbing spring 2 abuts against the adjustment seat 4. It can be understood that the hydraulic medium in the liquid storage chamber 501 and the hydraulic adjustment chamber 301 is generally hydraulic oil.

[0023] The motorcycle front shock absorber in the above structural design does not require additional adjustment tools, and the spring preload is easy to adjust, which is conducive to improving user experience; specifically, by controlling the motor assembly 6 to drive the floating piston 501 to the right (based on the attached Figure 1The right end of the front shock absorber) moves, thereby pushing the adjustment seat 4 to move, and the adjustment seat 4 presses down the shock-absorbing spring to complete the electric adjustment of the spring preload; at the same time, the structural reliability and stability can be guaranteed by adopting hydraulic transmission force; the liquid storage chamber 501 and the hydraulic adjustment chamber 301 are connected by the pipeline 7, which is conducive to arranging the drive structure at a suitable remote position, thereby reducing the restriction on the installation space of the front shock absorber; by arranging the adjustment seat 4 on the fixed seat 3, the compactness of the structure is guaranteed, and there is no need to change the overall external dimensions of the shock absorber body.

[0024] In this embodiment, the motor assembly 6 includes a rotating motor 601, a rotating screw 602, a nut sleeve 603 and a guide sleeve 604. The guide sleeve 604 is fixedly connected to the base 5, and the nut sleeve 603 is slidably arranged in the guide sleeve 604 with a single degree of freedom. The rotating screw 602 is threadedly connected to the nut sleeve 603. The output end of the rotating motor 601 is transmission-connected to the rotating screw 602, and the working end of the nut sleeve 603 can abut against the floating piston 502. Specifically, the guide sleeve 604 is threadedly connected to the left end of the base 5, the inner wall cross-section of the guide sleeve 604 is a hexagonal structure, and the outer wall of the nut sleeve 603 is adapted to the inner wall of the guide sleeve 604. The hexagonal structure realizes the single free sliding of the nut sleeve 603. The output end of the rotating motor 601 is connected to the rotating screw 602 through a spline, thereby driving the rotating screw 602 to rotate, so that the nut sleeve 603 performs linear motion; thereby, the nut sleeve 603 is used to push the floating piston 502 to move; the movement of the floating piston 502 changes the volume of the liquid storage chamber 501, and the hydraulic oil in the liquid storage chamber 501 is transported to the hydraulic adjustment chamber 301, pushing the adjustment seat 4 to move, thereby adjusting the preload of the shock absorber spring 2; by adopting the rotating motor 601 plus the screw and nut mechanism to realize the movement of the floating piston 502, the structure is simple and reliable, and at the same time it is conducive to ensuring the transmission stability and adjustment accuracy.

[0025] In this embodiment, the motor assembly 6 also includes a connecting seat 605, which is detachably connected to the guide sleeve 604, and the rotating motor 601 is detachably connected to the connecting seat 605; specifically, the connecting seat 605 is connected to the left end of the guide sleeve 604 by bolts; the rotating motor 601 is connected to the connecting seat 605 by bolts. The provision of the connecting seat 605 is conducive to ensuring the installation stability of the rotating motor 601, simplifying the installation structure, and improving the compactness of the structure, while facilitating disassembly and assembly.

[0026] In this embodiment, the output shaft of the rotating motor 601 is coaxially arranged with the rotating screw 602. Here, a through hole is provided in the middle of the connecting seat 605. The output shaft of the rotating motor 601 and the rotating screw 602 are connected in a transmission manner at the through hole by spline connection or the like. This structural design is conducive to further improving the compactness of the overall structure, thereby reducing the demand for installation space.

[0027] In this embodiment, a support bearing 606 is provided at the end of the guide sleeve 604, and the rotating screw 602 is rotatably provided on the support bearing 606; specifically, the support bearing 606 here can adopt a deep groove ball bearing; by providing the support bearing 606, it is beneficial to ensure the installation stability of the rotating screw 602 and improve the transmission stability.

[0028] In this embodiment, the rotating motor 601 is a DC motor. The DC motor can be directly powered by the motorcycle battery to ensure sufficient power, facilitate adaptation to the motorcycle, and reduce costs. Here, a brushed DC motor or a brushless DC motor can be selected.

[0029] In this embodiment, a protective outer cylinder 8 is sealedly connected to the base 5, the motor assembly 6 is located in the protective outer cylinder 8, and the end of the protective outer cylinder 8 away from the base 5 is sealed with a sealing cover 801; specifically, the right end of the protective outer cylinder 8 is threadedly connected to the base 5, and the sealing of the connection is ensured by providing a sealing ring; the sealing cover 801 is threadedly connected to the left end of the protective outer cylinder 8, and the sealing of the connection is also ensured by providing a sealing ring, and a hole is opened on the sealing cover 801 for the passage of the motor wiring harness; by providing the protective outer cylinder 8, effective protection of the motor assembly 6 can be formed, which can be waterproof, improve durability and safety, and enhance the overall appearance.

[0030] In this embodiment, an annular groove 302 is provided on the fixing seat 3, and the adjustment seat 4 is an annular sleeve slidably arranged in the annular groove 302, and the hydraulic adjustment chamber 301 is formed between the annular sleeve and the annular groove 302; this structural design is compact and has good structural strength, which is conducive to ensuring durability.

[0031] In this embodiment, a wear-resistant pad 9 is provided between the adjustment seat 4 and the shock-absorbing spring 2. The provision of the wear-resistant pad 9 is beneficial to improving the durability of the overall structure and reducing the impact wear of the shock-absorbing spring 2 on the adjustment seat 4.

[0032] In this embodiment, the outer end surface of the fixing seat 3 is provided with a liquid inlet 303 communicating with the hydraulic regulating chamber 301, and the pipe 7 is detachably and sealedly connected to the liquid inlet 303; the outer end surface here refers to the attached Figure 1 pipe 7 is detachably connected to the liquid inlet 303 by bolts; by providing the liquid inlet 303 on the outer end surface of the fixing base 3, the structure is compact.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A motorcycle front shock absorber with electrically adjustable spring preload, characterized in that: include: A front shock absorber body comprises an outer tube (1) and a shock absorbing spring (2) arranged in the outer tube (1); The preload adjustment mechanism comprises a fixing seat (3) fixedly connected to the end of the outer tube (1), an adjustment seat (4) which can be driven to slide on the fixing seat (3), and a driving structure for driving the adjustment seat (4) to slide; The driving structure comprises a base (5) having a liquid storage chamber (501), a floating piston (502) arranged in the liquid storage chamber (501), and a motor assembly (6) for driving the floating piston (502) to move so as to change the volume of the liquid storage chamber (501); a hydraulic adjustment chamber (301) for providing a force for the adjustment seat (4) is formed between the adjustment seat (4) and the fixed seat (3); the liquid storage chamber (501) and the hydraulic adjustment chamber (301) are connected through a pipe (7); and one end of the shock-absorbing spring (2) abuts against the adjustment seat (4).

2. The motorcycle front shock absorber with electrically adjustable spring preload according to claim 1, characterized in that: The motor assembly (6) comprises a rotating motor (601), a rotating lead screw (602), a nut sleeve (603) and a guide sleeve (604); the guide sleeve (604) is fixedly connected to the base (5); the nut sleeve (603) is slidably arranged in the guide sleeve (604) with a single degree of freedom; the rotating lead screw (602) and the nut sleeve (603) are threadedly connected; the output end of the rotating motor (601) is transmission-connected to the rotating lead screw (602); and the working end of the nut sleeve (603) can abut against the floating piston (502).

3. The motorcycle front shock absorber with electrically adjustable spring preload according to claim 2, characterized in that: The motor assembly (6) further comprises a connecting seat (605), wherein the connecting seat (605) is detachably connected to the guide sleeve (604), and the rotating motor (601) is detachably connected to the connecting seat (605).

4. The motorcycle front shock absorber with electrically adjustable spring preload according to claim 3, characterized in that: The output shaft of the rotating motor (601) is coaxially arranged with the rotating screw (602).

5. The motorcycle front shock absorber with electrically adjustable spring preload according to any one of claims 2 to 4, characterized in that: A support bearing (606) is provided at the end of the guide sleeve (604), and the rotating screw (602) is rotatably provided on the support bearing (606).

6. The motorcycle front shock absorber with electrically adjustable spring preload according to any one of claims 2 to 5, characterized in that: The rotating motor (601) is a DC motor.

7. The motorcycle front shock absorber with electrically adjustable spring preload according to any one of claims 2 to 6, characterized in that: A protective outer cylinder (8) is sealedly connected to the base (5), the motor assembly (6) is located in the protective outer cylinder (8), and a sealing cover (801) is sealedly connected to one end of the protective outer cylinder (8) away from the base (5).

8. The motorcycle front shock absorber with electrically adjustable spring preload according to claim 1, characterized in that: The fixing seat (3) is provided with an annular groove (302), and the adjusting seat (4) is an annular sleeve slidably arranged in the annular groove (302), and the hydraulic regulating chamber (301) is formed between the annular sleeve and the annular groove (302).

9. The motorcycle front shock absorber with electrically adjustable spring preload according to claim 8, characterized in that: A wear-resistant pad (9) is provided between the adjustment seat (4) and the shock-absorbing spring (2).

10. The motorcycle front shock absorber with electrically adjustable spring preload according to claim 8, characterized in that: A liquid inlet (303) communicating with the hydraulic regulating chamber (301) is provided on the outer end surface of the fixing seat (3), and the pipeline (7) is detachably and sealedly connected to the liquid inlet (303).

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