A scooter front suspension system

Abstract

The utility model relates to a scooter technical field especially is involved in a kind of scooter front suspension system, including bottom plate, the front end top of bottom plate is equipped with vehicle frame, vehicle frame is half closed structure, and the space of foot is formed in the enclosure between bottom plate and vehicle frame, the top of vehicle frame is equipped with vehicle frame sleeve rod, steering rod is rotatably arranged in vehicle frame sleeve rod, the bottom of steering rod is equipped with steering plate, the both sides of vehicle frame sleeve rod are rotatably arranged with upper swing arm, the bottom of bottom plate is equipped with mounting seat, the both sides of mounting seat are rotatably arranged with lower swing arm, damping spring is equipped between lower swing arm and bottom plate, wheel rod is rotatably connected between upper swing arm and lower swing arm, transmission plate is equipped on wheel rod, steering connecting rod is rotatably connected between transmission plate and steering plate, wheel is also equipped on wheel rod, the utility model's structure is simple and reasonable, changes the design limitation that traditional scooter foot position relies on tire size or car body size, both small size tire and large size tire can be perfectly compatible.

Description

Technical Field

[0001] This utility model relates to the field of mobility scooter technology, and in particular to a front suspension system for a mobility scooter. Background Technology

[0002] For people with mobility impairments, mobility scooters are a practical means of transportation. Traditional electric mobility scooters used in medical devices typically have the footrest positioned above the tires or between the tires and the seat. This design is more suitable for small-sized tires; if paired with large-sized tires, it would result in the footrest being too high or the scooter being too long, affecting overall coordination. Utility Model Content

[0003] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0004] A front suspension system for a personal mobility vehicle includes a base plate, a frame at the top front end of the base plate, the frame being a semi-enclosed structure, forming a footrest space between the base plate and the frame, a frame sleeve at the top of the frame, a steering rod rotatably mounted inside the frame sleeve, a steering plate at the bottom of the steering rod, upper control arms rotatably mounted on both sides of the frame sleeve, a mounting base at the bottom of the base plate, lower control arms rotatably mounted on both sides of the mounting base, a shock-absorbing spring between the lower control arms and the base plate, a wheel rod rotatably connected between the upper and lower control arms, a transmission plate mounted on the wheel rod, a steering linkage rotatably connected between the transmission plate and the steering plate, and a wheel mounted on the wheel rod.

[0005] As a further embodiment of this utility model: the frame includes a portal-shaped support rod, a U-shaped guard rod and an L-shaped guard rod. The portal-shaped support rod is set at the top front end of the base plate. The two ends of the U-shaped guard rod are respectively connected to the two vertical rods of the portal-shaped support rod. One end of the L-shaped guard rod is connected to the U-shaped guard rod, and the other end of the L-shaped guard rod is connected to the base plate.

[0006] As a further embodiment of this utility model: a portal plate is provided on the frame sleeve, a first screw is provided between the two sides of the portal plate, a first sleeve is provided at one end of the upper swing arm, the first sleeve is sleeved on the first screw, a first ball sleeve is provided at the other end of the upper swing arm, a first ball head rod is provided at one end of the wheel rod, and the ball head end of the first ball head rod is set in the first ball sleeve.

[0007] As a further embodiment of this utility model: the mounting base is in the shape of a door, a second screw is provided between the two sides of the mounting base, a second sleeve is provided at one end of the lower swing arm, the second sleeve is sleeved on the second screw, a second ball sleeve is provided at the other end of the lower swing arm, a second ball head rod is provided at the other end of the wheel rod, and the ball head end of the second ball head rod is set inside the second ball sleeve.

[0008] As a further embodiment of this utility model: through holes are provided on both the base plate and the lower swing arm, a third screw is inserted into one of the through holes, the end of the third screw passes through the through hole and is connected to the shock-absorbing spring and a nut, and a groove is also provided on the lower swing arm for the lower end of the spring to be inserted and abutted.

[0009] As a further embodiment of this utility model: a first fisheye bearing and a second fisheye bearing are respectively provided at both ends of the steering linkage. The first fisheye bearing is connected to the transmission plate through a fourth screw, and the second fisheye bearing is connected to the steering plate through a fifth screw.

[0010] Compared with the prior art, the beneficial effects of this utility model are: the structure of this utility model is simple and reasonable, and it changes the design limitation of traditional mobility scooter foot position depending on tire size or body size. It can be adapted to small tires and can also be perfectly compatible with large tires.

[0011] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the frame structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the upper swing arm part of this utility model.

[0015] Figure 3 This is a schematic diagram of the footrest space of this utility model.

[0016] Figure 4 This is a schematic diagram of the wheel shaft part of this utility model.

[0017] In the diagram: 1. Base plate, 2. Frame, 3. Footrest space, 4. Frame sleeve, 5. Steering rod, 6. Steering plate, 7. Upper control arm, 8. Mounting seat, 9. Lower control arm, 10. Shock absorber spring, 11. Wheel rod, 12. Transmission plate, 13. Steering linkage, 14. Wheel, 15. Portal support rod, 16. U-shaped guard bar, 17. L-shaped guard bar, 18. Portal plate, 19. First screw, 20. First sleeve, 21. First ball sleeve, 22. First ball head rod, 23. Second sleeve, 24. Second ball sleeve, 25. Second ball head rod, 26. Through hole, 27. Third screw, 28. Nut, 29. Groove, 30. First spherical bearing, 31. Second spherical bearing, 32. Fourth screw, 33. Fifth screw, 34. Second screw. Detailed Implementation

[0018] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] Please see Figures 1-4 In this embodiment of the utility model, a front suspension system for a personal mobility vehicle includes a base plate 1, a frame 2 at the top front end of the base plate 1, the frame 2 having a semi-enclosed structure, a footrest space 3 formed between the base plate 1 and the frame 2, a frame sleeve 4 at the top of the frame 2, a steering rod 5 rotatably mounted inside the frame sleeve 4, a steering plate 6 at the bottom of the steering rod 5, upper swing arms 7 rotatably mounted on both sides of the frame sleeve 4, a mounting seat 8 at the bottom of the base plate 1, lower swing arms 9 rotatably mounted on both sides of the mounting seat 8, a shock-absorbing spring 10 between the lower swing arms 9 and the base plate 1, a wheel rod 11 rotatably connected between the upper swing arms 7 and the lower swing arms 9, a transmission plate 12 mounted on the wheel rod 11, a steering linkage 13 rotatably connected between the transmission plate 12 and the steering plate 6, and a wheel 14 mounted on the wheel rod 11.

[0020] Understandably, the foot space 3 formed by the base plate 1 and the frame 2 is located between the two wheels 14. With this structural design, it is not necessary to lengthen the vehicle body to reserve the foot space 3. This changes the design limitation of traditional commuter vehicles where the foot position depends on the tire size or vehicle body size. It can accommodate both small and large tires. When the commuter vehicle equipped with this front suspension system is used, the steering lever 5 is turned to drive the wheels 14 to swing and achieve the steering of the commuter vehicle. When the commuter vehicle encounters an obstacle, the force on the wheels 14 is transmitted to the shock absorber spring 10. The shock absorber spring 10 absorbs the impact force through elastic deformation to achieve shock absorption.

[0021] The frame 2 includes a portal frame 15, a U-shaped guard bar 16, and an L-shaped guard bar 17. The portal frame 15 is located at the top front end of the base plate 1. The two ends of the U-shaped guard bar 16 are connected to the two vertical bars of the portal frame 15, respectively. One end of the L-shaped guard bar 17 is connected to the U-shaped guard bar 16, and the other end of the L-shaped guard bar 17 is connected to the base plate 1. In this way, the portal frame 15, U-shaped guard bar 16, and L-shaped guard bar 17 can protect the driver's feet from collisions with obstacles.

[0022] The frame sleeve 4 is provided with a portal plate 18, and a first screw 19 is provided between the two sides of the portal plate 18. One end of the upper swing arm 7 is provided with a first sleeve 20, which is sleeved on the first screw 19. The other end of the upper swing arm 7 is provided with a first ball sleeve 21. One end of the wheel rod 11 is provided with a first ball head rod 22, and the ball head end of the first ball head rod 22 is located inside the first ball sleeve 21.

[0023] The mounting base 8 is U-shaped, with a second screw 34 between its two sides. One end of the lower swing arm 9 has a second sleeve 23 fitted onto the second screw 34. The other end of the lower swing arm 9 has a second ball joint 24, and the other end of the wheel rod 11 has a second ball joint 25, with the ball end of the ball joint 25 positioned inside the second ball joint 24. Thus, the upper swing arm 7 and lower swing arm 9 each utilize a ball joint to connect the upper and lower ends of the wheel rod 11. The ball joint is small in size, not only meeting the rotation requirements of the wheel rod 11 but also allowing for a corresponding reduction in the outer diameter of the wheel rod 11, thus minimizing the space occupied by parts.

[0024] To improve the installation stability of the shock absorber spring 10, both the base plate 1 and the lower swing arm 9 are provided with through holes 26. A third screw 27 is inserted into one of the through holes 26. The end of the third screw passes through the through hole 26 and is screwed to the shock absorber spring 10 with a nut 28. The lower swing arm 9 is also provided with a groove 29 for the lower end of the spring to be inserted and abutted.

[0025] The steering link 13 has a first spherical bearing 30 and a second spherical bearing 31 at its two ends. The first spherical bearing 30 is connected to the transmission plate 12 via a fourth screw 32, and the second spherical bearing 31 is connected to the steering plate 6 via a fifth screw 33. Thus, the two ends of the steering link 13 are connected to the transmission plate 12 and the steering plate 6 respectively via spherical bearings. The inner ring of the spherical bearing has a spherical sliding structure, which can realize flexible swinging at multiple angles and within a small range to meet the transmission requirements during steering.

[0026] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. A front suspension system for a mobility scooter, characterized in that, The system includes a base plate, a frame at the top front end of the base plate, a semi-enclosed frame, and a footrest space formed between the base plate and the frame. A frame sleeve is located at the top of the frame sleeve, and a steering rod is rotatably mounted inside the frame sleeve. A steering plate is located at the bottom of the steering rod. Upper control arms are rotatably mounted on both sides of the frame sleeve. A mounting base is located at the bottom of the base plate, and lower control arms are rotatably mounted on both sides of the mounting base. A shock-absorbing spring is located between the lower control arms and the base plate. A wheel rod is rotatably connected between the upper and lower control arms. A transmission plate is mounted on the wheel rod, and a steering linkage is rotatably connected between the transmission plate and the steering plate. A wheel is also mounted on the wheel rod.

2. The front suspension system for a personal mobility vehicle according to claim 1, characterized in that, The frame includes portal struts, U-shaped guard bars and L-shaped guard bars. The portal struts are located at the top front end of the base plate. The two ends of the U-shaped guard bars are connected to the two vertical bars of the portal struts respectively. One end of the L-shaped guard bar is connected to the U-shaped guard bar, and the other end of the L-shaped guard bar is connected to the base plate.

3. The front suspension system for a personal mobility vehicle according to claim 1, characterized in that, The frame sleeve is provided with a portal plate, and a first screw is provided between the two sides of the portal plate. One end of the upper swing arm is provided with a first sleeve, which is fitted onto the first screw. The other end of the upper swing arm is provided with a first ball sleeve. One end of the wheel rod is provided with a first ball head rod, and the ball head end of the first ball head rod is set inside the first ball sleeve.

4. The front suspension system for a personal mobility vehicle according to claim 3, characterized in that, The mounting base is U-shaped, with a second screw between the two sides of the mounting base. One end of the lower swing arm is provided with a second sleeve, which is fitted onto the second screw. The other end of the lower swing arm is provided with a second ball sleeve, and the other end of the wheel rod is provided with a second ball head rod, with the ball head end of the second ball head rod set inside the second ball sleeve.

5. The front suspension system for a personal mobility vehicle according to claim 1, characterized in that, Both the base plate and the lower control arm have through holes. A third screw is inserted into one of the through holes. The end of the third screw passes through the through hole and is connected to the shock absorber spring and a nut. The lower control arm also has a groove for the lower end of the spring to be inserted and abutted.

6. The front suspension system for a personal mobility vehicle according to claim 1, characterized in that, The steering linkage is equipped with a first fisheye bearing and a second fisheye bearing at both ends. The first fisheye bearing is connected to the transmission plate through a fourth screw, and the second fisheye bearing is connected to the steering plate through a fifth screw.

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