A seat electric lift actuator mechanism for two-wheeled motorcycles

Abstract

The application discloses a kind of electric lifting actuator mechanisms for two-wheeled motorcycle seat, it is related to two-wheeled motorcycle seat lifting technical field, including lower shell and the upper shell being connected with lower shell by fastener, it is characterized in that, still include drive part, it is set between upper shell and lower shell;Lifting drive shaft is vertically arranged between upper shell and lower shell, it is transmission connection with drive part by worm gear transmission pair;Lifting part is threadedly sleeved in upper part of lifting drive shaft, and outer wall is limit sliding connection with upper shell;The present application can bear the super large radial load generated when riding acceleration, over bending, over bumpy road by the mutual cooperation between follow-up guide part, lifting drive shaft and elastic element etc., ensure the lateral stability of lifting system, significantly improve the subjective safety and control confidence of driver and passenger.

Description

Technical Field

[0001] This invention relates to the field of two-wheeled motorcycle seat lifting technology, and in particular to an electric lifting actuator mechanism for two-wheeled motorcycle seats. Background Technology

[0002] Motorcycles, with their excellent economy and flexibility, have become an extremely popular means of personal transportation worldwide. In modern cities where traffic congestion is increasingly severe, motorcycles can use their relatively small size to navigate through traffic, significantly reducing commuting time and efficiently solving travel problems.

[0003] Currently, the seat height of two-wheeled motorcycles is typically either fixed or manually adjustable. Manual adjustment requires getting off the motorcycle each time, which is inconvenient. Furthermore, since different riders have significant differences in height, leg length, and preferred riding posture, a fixed seat height cannot meet personalized adjustment needs. This can easily lead to rider fatigue during long-distance riding, greatly affecting riding comfort and the overall handling experience.

[0004] Therefore, it is necessary to propose an electric lifting actuator mechanism for two-wheeled motorcycle seats to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide an electric lifting actuator mechanism for a two-wheeled motorcycle seat, in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an electric lifting actuator mechanism for a two-wheeled motorcycle seat, comprising a lower housing and an upper housing connected to the lower housing by fasteners, and further comprising a drive unit disposed between the upper housing and the lower housing; The lifting drive shaft is vertically positioned between the upper and lower housings and is connected to the drive unit via a worm gear transmission pair. The lifting part is threadedly fitted onto the upper part of the lifting drive shaft, and its outer wall is slidably connected to the upper housing. The inner support tube is rotatably sleeved on the top of the lifting part, and the top extends to the outside of the upper housing; The follow-up guide, arranged parallel to the lifting drive shaft and located inside the upper housing, is used to bear radial loads and prevent tilting. The seat connector is located at the top of the inner support tube and the follower guide, and is detachably connected to the inner support tube and the follower guide by fasteners. The elastic element, located between the seat connector and the upper housing, is used to buffer axial force and assist the seat in moving upward.

[0007] Preferably, the lifting drive shaft includes a rotating shaft, the bottom of which is connected to a worm gear transmission pair, and the top of which is integrally formed with a lead screw; The limiting part is fixedly sleeved on the top of the lead screw to prevent the lifting part from slipping off.

[0008] Preferably, the upper housing includes an upper housing body, which is disposed on top of the lower housing; The first cylinder is located on the top of the upper shell body and is integrally formed with the upper shell body. It is sealed and slidably connected to the inner support tube. The second cylinder is located on the top of the upper shell body and is integrally formed with the upper shell body. It is fitted outside the follower guide section.

[0009] Preferably, the lower housing includes a lower housing body, the top of which has a storage groove for accommodating the drive unit and the lifting drive shaft.

[0010] Preferably, the driving unit is a drive motor.

[0011] Preferably, the worm gear transmission pair includes a worm, which is disposed on the output shaft of the drive unit; The worm gear is limited and slidably sleeved at the bottom of the lifting drive shaft.

[0012] Preferably, it also includes a deep groove ball bearing, which is disposed outside the lifting drive shaft and located at the top of the worm gear; A one-way thrust needle roller bearing is fitted around the lifting drive shaft and located at the bottom of the worm gear.

[0013] Preferably, the follower guide includes a guide shaft, which is vertically limited and slidably disposed inside the upper housing at the top of the drive unit, and its top extends outside the upper housing.

[0014] An oil-free bushing is provided between the upper housing and the guide shaft, and is slidably sleeved with the guide shaft.

[0015] The technical effects and advantages of this invention are as follows: This invention, through the cooperation of the follow-up guide, the lifting drive shaft and the elastic element, can withstand the huge radial load generated when riding, accelerating, cornering and riding on bumpy roads, ensuring the anti-tilt stability of the lifting system and significantly improving the subjective safety and control confidence of the rider.

[0016] This invention utilizes the cooperation between the follow-up guide, the lifting drive shaft, and the elastic element. When the seat is fully loaded, the spring is compressed and in an energy storage state. When the electric lifting actuator mechanism is activated, the elastic potential energy assists the drive unit to start easily.

[0017] This invention, through the cooperation of the follow-up guide, lifting drive shaft and elastic components, can buffer and dissipate a portion of the axial and lateral forces under extreme impact conditions, ensuring that the internal components of the actuator are not damaged. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 This is a schematic diagram of the overall structure of the present invention from another angle.

[0020] Figure 3 This is an exploded view of the part of the present invention.

[0021] Figure 4 This is a schematic diagram showing the transmission connection between the drive unit and the lifting drive shaft of the present invention.

[0022] Figure 5 This is a schematic diagram of the lifting drive shaft structure in this invention.

[0023] Figure 6 This is a schematic diagram of the upper and lower shell structures in this invention.

[0024] Figure 7 This is a three-dimensional sectional view of the overall structure of the present invention.

[0025] Figure 8 In this invention Figure 7 Exploded view of structural components.

[0026] Figure 9 This is another three-dimensional sectional view of the overall structure in this invention.

[0027] In the diagram: 1. Upper shell; 101. Upper shell body; 102. First cylinder; 103. Second cylinder; 2. Lower shell; 201. Lower shell body; 202. Storage slot; 3. Drive unit; 4. Lifting drive shaft; 401. Rotating shaft; 402. Lead screw; 403. Limiting part; 5. Worm gear transmission pair; 501. Worm; 502. Worm gear; 6. Lifting part; 7. Inner support tube; 8. Follow-up guide part; 81. Guide shaft; 82. Oil-free bushing; 9. Elastic element; 10. Seat connector; 11. Deep groove ball bearing; 12. One-way thrust needle roller bearing. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] This invention provides, for example Figures 1 to 9 The illustrated electric lifting actuator mechanism for a two-wheeled motorcycle seat includes a lower housing 2 and an upper housing 1 connected to the lower housing 2 by fasteners. Specifically, the fasteners can be bolts or screws, and there are at least four fasteners. The bottom of the upper housing 1 has mating holes for the fasteners, and the lower housing 2 has through holes for the fasteners to pass through. Furthermore, a labyrinth seal is provided between the lower housing 2 and the upper housing 1. By tightly locking the upper housing 1 and the lower housing 2 together, a high-strength sealed space is formed to prevent external dust and moisture from entering the internal core mechanism. The lower housing 2 and the upper housing 1 are made of aluminum alloy or zinc alloy, or other materials that meet the requirements of high strength and low density.

[0030] It also includes a drive unit 3, which is disposed between the upper housing 1 and the lower housing 2. The drive unit 3 is a drive motor, specifically a servo motor, stepper motor, or brushed DC motor, etc. The drive unit 3 outputs rotational power, which drives the seat to achieve smooth lifting and lowering movements via the worm gear transmission pair 5. The drive unit 3 is electrically connected to the controller and the energy storage power supply.

[0031] The lifting drive shaft 4 is vertically positioned between the upper housing 1 and the lower housing 2, and is connected to the drive unit 3 via a worm gear transmission pair 5. The drive unit 3 drives the worm gear transmission pair 5, which in turn drives the lifting drive shaft 4 to rotate synchronously, thereby adjusting the seat height. The worm gear transmission pair 5 occupies minimal space, has few parts, and provides a large reduction ratio and self-locking function, effectively ensuring that the seat does not move or fall in the vertical direction. A preferred large reduction ratio is 21:1, which effectively converts the rotational motion of the motor into a large axial force of approximately 2500N transmitted by the lead screw 402, providing sufficient support in the vertical direction.

[0032] The lifting part 6 is threadedly sleeved on the upper part of the lifting drive shaft 4, and its outer wall is limited and slidably connected to the upper housing 1. The lifting part 6 of this invention is a nut slider, which is driven by the rotation of the lifting drive shaft 4 to perform vertical linear displacement.

[0033] The inner support tube 7 is rotatably sleeved on the top of the lifting part 6, and the top extends to the outside of the upper housing 1. The inner support tube 7 of the present invention can be an aluminum alloy tube or a stainless steel tube. When the lifting part 6 rises, the inner support tube 7 is simultaneously lifted to the outside of the upper housing 1, thereby providing a stable seat support point for the driver.

[0034] The follow-up guide 8 is arranged parallel to the lifting drive shaft 4 and located inside the upper housing 1. It is used to bear radial loads and prevent tilting.

[0035] Specifically, the follower guide 8 includes a guide shaft 81, which is vertically limited and slidably disposed inside the upper housing 1 at the top of the drive unit 3, and its top extends to the outside of the upper housing 1.

[0036] An oil-free bushing 82 is disposed between the upper housing 1 and the guide shaft 81, and is slidably sleeved with the guide shaft 81. The guide shaft 81 and the oil-free bushing 82 are in surface contact, capable of bearing extremely large radial loads. This prevents lateral tilting when the rider accelerates, corners, or traverses bumpy roads. It provides 200kg of anti-tilt force, ensuring the anti-tilt stability of the lifting system, avoiding any impact on the subjective experience of the rider, and enhancing the rider's subjective safety and confidence in operation.

[0037] The seat connector 10 is disposed on the top of the inner support tube 7 and the follower guide 8, and is detachably connected to the inner support tube 7 and the follower guide 8 by fasteners. The seat connector 10 of the present invention is a metal bracket or an alloy connecting plate. By connecting the seat connector 10 to the bottom of the seat, the inner support tube 7 provides vertical support and the follower guide 8 provides anti-tilt support, thereby realizing the effective combination of the seat and the lifting drive system.

[0038] The elastic element 9 is disposed between the seat connector 10 and the upper housing 1 to buffer axial force and assist the seat to move upward. The elastic element 9 of this invention is a spring. Under full load conditions, the spring is compressed and in an energy storage state. When the electric lifting actuator mechanism is started, the elastic potential energy assists the drive unit 3 to start easily. At the same time, when subjected to external impact, it can buffer and dissipate part of the axial force and lateral force, ensuring that the internal components of the actuator are not damaged and extending the service life.

[0039] The lifting drive shaft 4 includes a rotating shaft 401, the bottom of which is connected to the worm gear transmission pair 5, and the top of which is integrally formed with a lead screw 402. The present invention accurately transmits the torque of the motor to the lead screw 402 through the rotating shaft 401, thereby realizing the rotational movement of the lead screw 402.

[0040] The limiting part 403 is fixedly sleeved on the top of the lead screw 402 to prevent the lifting part 6 from slipping off. When the lifting part 6 moves to the upper limit of its stroke, the limiting part 403 provides mechanical blocking to prevent the lifting part 6 from disengaging from the lead screw 402 and causing mechanical failure.

[0041] The upper housing 1 includes an upper housing body 101, which is disposed on top of the lower housing 2.

[0042] The first cylindrical body 102 is located on the top of the upper shell body 101 and is integrally formed with the upper shell body 101. It is sealed and slidably connected to the inner support tube 7.

[0043] The second cylinder 103 is disposed on the top of the upper shell body 101 and integrally formed with the upper shell body 101. It is sleeved on the oil-free bushing 82 of the follower guide part 8. The second cylinder 103 of the present invention can be a guide sleeve or a reinforcing cylinder, providing positioning support for the follower guide part 8 and improving the overall structural strength of the actuator.

[0044] The lower housing 2 includes a lower housing body 201, the top of which is provided with a storage groove 202 for accommodating the drive unit 3 and the lifting drive shaft 4; the present invention arranges the drive motor and transmission mechanism in an orderly manner by pre-setting the storage groove 202, thereby saving internal space.

[0045] The worm gear transmission pair 5 includes a worm 501, which is mounted on the output shaft of the drive unit 3.

[0046] The worm gear 502 is limited and slidably sleeved at the bottom of the lifting drive shaft 4.

[0047] The present invention also includes a deep groove ball bearing 11, which is disposed outside the lifting drive shaft 4 and located at the top of the worm gear 502. The deep groove ball bearing 11 of the present invention is used to bear radial force and ensure transmission stability.

[0048] The one-way thrust needle roller bearing 12 is sleeved on the outside of the lifting drive shaft 4 and located at the bottom of the worm gear 502. The one-way thrust needle roller bearing 12 of the present invention is used to bear axial load.

[0049] When the seat needs to be raised, the controller controls the drive unit 3 to work. The drive unit 3 will drive the worm gear 501 to rotate. The worm gear 501 meshes with the drive worm wheel 502 to rotate at low speed. The worm wheel 502 drives the lifting drive shaft 4 to rotate synchronously. The threaded pair between the lead screw 402 on the lifting drive shaft 4 and the lifting part 6 will move relative to each other. Under the limitation of the upper housing 1, the lifting part 6 is forced to make an upward linear displacement. The upward movement of the lifting part 6 drives the inner support tube 7 to rise synchronously. The top of the inner support tube 7 pulls the seat connector 10 to move upward, thereby realizing the overall height increase of the seat.

[0050] When the seat needs to be lowered, the controller controls the drive motor to reverse, the output shaft of the drive motor drives the worm 501 to rotate in the opposite direction, the worm 501 drives the worm wheel 502 to rotate in the opposite direction, the worm wheel 502 drives the lifting drive shaft 4 and the lead screw 402 to rotate in the opposite direction synchronously. The rotation of the lead screw 402 causes the threaded lifting part 6 to move downward under the combined action of gravity and motor torque. The inner support tube 7 and the seat connecting part 10 move downward synchronously. At the same time, the elastic element 9 is in a compressed state to help maintain the smoothness of the downward pressing process.

[0051] When accelerating, cornering, traversing bumpy roads, or experiencing impact loads, the follow-up guide 8, under lateral impact, can withstand extremely large radial loads due to the surface contact between the guide shaft 81 and the oil-free bushing 82. This prevents lateral tilting during acceleration, cornering, and traversing bumpy roads, providing 200kg of anti-tilt force to ensure the anti-tilt stability of the lifting system, avoiding any impact on the rider's subjective experience and enhancing their subjective safety and confidence in operation. Simultaneously, the axial force generated by the impact acts on the seat connector 10 and the elastic element 9. The seat connector 10 compresses the elastic element 9 downwards, and the deformation of the elastic element 9 buffers and dissipates some of the axial and lateral forces, ensuring that the internal components of the actuator are not damaged and extending their service life.

[0052] Finally, it should be noted that the above description 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 foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An electric lifting actuator mechanism for a two-wheeled motorcycle seat, comprising a lower housing (2) and an upper housing (1) connected to the lower housing (2) by fasteners, characterized in that, It also includes a drive unit (3), which is disposed between the upper housing (1) and the lower housing (2); The lifting drive shaft (4) is vertically arranged between the upper housing (1) and the lower housing (2), and is connected to the drive unit (3) through the worm gear transmission pair (5); The lifting part (6) is threadedly sleeved on the upper part of the lifting drive shaft (4), and its outer wall is limited and slidably connected to the upper housing (1); The inner support tube (7) is rotatably sleeved on the top of the lifting part (6), and the top extends to the outside of the upper shell (1); The follow-up guide (8) is arranged parallel to the lifting drive shaft (4) and located inside the upper housing (1) to bear radial loads and prevent tilting. Seat connector (10) is provided on the top of the inner support tube (7) and the follower guide (8), and is detachably connected to the inner support tube (7) and the follower guide (8) by fasteners; An elastic element (9) is disposed between the seat connector (10) and the upper housing (1) to buffer axial force and assist the seat to move upward.

2. The electric lifting actuator mechanism for a two-wheeled motorcycle seat according to claim 1, characterized in that, The lifting drive shaft (4) includes a rotating shaft (401), the bottom of which is connected to the worm gear transmission pair (5), and the top of which is integrally formed with a lead screw (402). The limiting part (403) is fixedly sleeved on the top of the lead screw (402) to prevent the lifting part (6) from slipping off.

3. The electric lifting actuator mechanism for a two-wheeled motorcycle seat according to claim 2, characterized in that, The upper shell (1) includes an upper shell body (101), which is disposed on top of the lower shell (2); The first cylinder (102) is located on the top of the upper shell body (101) and is integrally formed with the upper shell body (101). It is sealed and slidably connected to the inner support tube (7). The second cylinder (103) is located on the top of the upper shell body (101) and is integrally formed with the upper shell body (101). It is sleeved on the outside of the follower guide (8).

4. The electric lifting actuator mechanism for a two-wheeled motorcycle seat according to claim 1, characterized in that, The lower housing (2) includes a lower housing body (201), and its top is provided with a storage groove (202) for accommodating the drive unit (3) and the lifting drive shaft (4).

5. The electric lifting actuator mechanism for a two-wheeled motorcycle seat according to claim 3, characterized in that, The drive unit (3) is a drive motor.

6. The electric lifting actuator mechanism for a two-wheeled motorcycle seat according to claim 1, characterized in that, The worm gear transmission pair (5) includes a worm (501), which is disposed on the output shaft of the drive unit (3); The worm gear (502) is limited and slidably sleeved at the bottom of the lifting drive shaft (4).

7. The electric lifting actuator mechanism for a two-wheeled motorcycle seat according to claim 6, characterized in that, It also includes a deep groove ball bearing (11), which is located outside the lifting drive shaft (4) and on top of the worm gear (502); A one-way thrust needle roller bearing (12) is sleeved outside the lifting drive shaft (4) and located at the bottom of the worm gear (502).

8. The electric lifting actuator mechanism for a two-wheeled motorcycle seat according to claim 1, characterized in that, The follower guide (8) includes a guide shaft (81), which is vertically limited and slidably disposed inside the upper housing (1) at the top of the drive unit (3), and its top extends to the outside of the upper housing (1); An oil-free bushing (82) is disposed between the upper housing (1) and the guide shaft (81) and is slidably sleeved with the guide shaft (81).

Images