Rear swing arm structure of electric scooter

Abstract

A rear swing arm structure of an electric scooter comprises a pedal rear side portion, a telescopic shock-proof unit, two swing arm units, two first connecting rods and a second connecting rod, one end of each swing arm unit is pivoted to the pedal rear side portion, one end of each first connecting rod is movably pivoted to the telescopic shock-proof unit, and the other end of each first connecting rod is movably pivoted to the second connecting rod. The other end of the first connecting rod is movably pivoted to the second assembling base, and the two ends of the second connecting rod are pivoted to the swing arm unit and the first connecting rod respectively. When the rear wheel is subjected to vibration impact force, the swing distance of one end of the first connecting rod is automatically and correspondingly matched with the swing distance of the rear wheel assembling part of the swing arm unit, namely, the shock absorption action stroke length of the telescopic shock absorption unit, and the degree of vibration of the rear wheel is automatically and correspondingly matched according to various sliding states and different road surfaces of the scooter. The shock-absorbing buffer force is balanced, too hard or too soft is avoided, the shock-absorbing comfort is improved, drifting, slipping, turning and lateral bending during sliding can be avoided, the road holding force can be increased, and the operation smoothness of the scooter and the safety of sliding on the road can be integrally improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electric scooters, and more particularly to a method for adjusting the shock absorbing stroke length of a telescopic shock absorbing unit, and automatically matching the vibration magnitude of a rear wheel in various sliding states and on different road surfaces of the scooter, so as to achieve a balance in shock absorbing and buffering force, and avoid a scooter rear swing arm structure that is too hard or too soft. Background Art

[0002] Because electric scooters are heavy, when riding on bumpy and uneven roads or encountering potholes, they are subjected to greater vibration and impact force, which will make people feel uncomfortable when riding, and the riding stability is insufficient, which affects the riding safety.

[0003] Therefore, electric scooters, especially large electric scooters, are usually equipped with shock absorbers, which not only improve riding comfort and stability, but also improve safety performance.

[0004] At present, large electric scooters are usually equipped with shock absorbers on the front and rear wheels to reduce the greater bumps and vibrations caused by the large size of the vehicle. The existing common electric scooter rear wheel shock absorber structure usually includes a pedal rear side, a rear swing arm, and a shock absorber, wherein one end of the rear swing arm is movably pivoted to the pedal rear side, and the rear wheel is connected to the other end of the rear swing arm. The shock absorber is usually a combination of a telescopic cylinder and a shock absorber spring, the upper side of which is connected to the pedal rear side, and the lower side is connected to the rear swing arm. However, this shock absorber has at least the following disadvantages:

[0005] Since the upper and lower sides of the shock absorber are arranged between the rear side of the pedal and the rear swing arm, the length of its shock absorbing stroke is limited due to space constraints, and the shock absorber is closer to the pivot point of one end of the rear swing arm at the rear side of the pedal than the wheel body, that is, the common swing fulcrum of the shock absorber and the rear swing arm, while the upper and lower sides of the rear wheel at the other end of the rear swing arm can swing up and down arbitrarily. Therefore, when the rear wheel is subjected to the vibration impact force, the magnitude of the vibration generated by the rear wheel is always greater than the shock absorbing stroke of the shock absorber, that is, the shock absorbing buffering force generated by the shock absorber and the vibration impact force of the rear wheel can never be effectively balanced. Once the electric scooter is in various sliding states and on different road surfaces, the shock absorber often has a shock absorbing buffering force that is too hard or too soft, which affects the shock absorption comfort of the electric scooter, and is prone to tail-swinging and skidding during sliding, and the rear wheel has poor grip, which affects the smoothness of the control of the electric scooter and the safety of sliding on the road.

[0006] In summary, the rear wheel shock-absorbing structure and function of conventional common electric scooters are still not ideal, and there is indeed a need for improvement.

[0007] In view of this, the inventor, based on the concept of continuous product improvement and innovation, has come up with the present invention based on many years of professional practical experience in this field, as well as active and dedicated research and development thinking, and through countless actual design experiments. Summary of the invention

[0008] The purpose of the present invention is to provide a telescopic shock-absorbing unit, which can automatically adjust the shock absorption stroke of the rear wheel according to the electric scooter in various sliding states and on different road surfaces, so as to achieve a balance of shock-absorbing and buffering forces and avoid a rear swing arm structure of the scooter that is too hard or too soft.

[0009] To achieve the above-mentioned purpose, the present invention provides a rear swing arm structure of an electric scooter, comprising a pedal rear side portion, a telescopic shock absorbing unit, two swing arm units, a first connecting rod, and two second connecting rods, and is characterized in that:

[0010] The rear side of the pedal is provided with a first set of receiving seats and two second sets of receiving seats;

[0011] The telescopic shock-absorbing unit has one end movably pivoted to the first set of seats;

[0012] The swing arm unit, one end of which is movably pivoted to the first position of the second assembly seat, and the other end of which is provided with a wheel assembly portion for assembly with a rear wheel;

[0013] The first connecting rod, one end of which is movably pivoted to the other end of the telescopic shock-absorbing unit, and the other end of which is movably pivoted to the second position of the second assembly seat;

[0014] One end of the second connecting rod is movably pivoted to the swing arm unit, and the other end of the second connecting rod is movably pivoted to the first connecting rod.

[0015] The effective gain of the present invention lies in that when the rear wheel is subjected to the vibration impact force, the swing distance of one end of the first connecting rod can automatically correspond to the swing distance of the rear wheel assembly connection part of the swing arm unit, that is, the shock absorbing stroke length of the telescopic shock absorbing unit. For the scooter in various sliding states and different road surfaces, it automatically corresponds to the vibration degree of the rear wheel to achieve a balance of shock absorption and buffering force, avoiding being too hard or too soft. In addition to improving the shock absorption comfort, it can avoid tail swinging and slipping during sliding, and can enhance the grip during turning and side bending, which can improve the overall control smoothness of the scooter and the safety of sliding on the road.

[0016] Other features and specific embodiments of the present invention will be further understood from the following detailed description with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a stereogram of the present invention.

[0018] Figure 2 It is a three-dimensional exploded view of the present invention.

[0019] Figure 3 It is a partial cross-sectional stereoscopic view of the present invention.

[0020] Figure 4 It is a cross-sectional view of the present invention.

[0021] Figure 5 This is a cross section of an example of use of the present invention Figure 1 .

[0022] Figure 6 This is a cross section of an example of use of the present invention Figure 2 .

[0023] Figure 7 This is a usage demonstration diagram of the present invention in which the swing distance of one end of the first connecting rod automatically corresponds to the swing distance of the rear wheel assembly connection portion of the swing arm unit. DETAILED DESCRIPTION

[0024] Please refer to Figures 1 to 5 As shown, the rear swing arm structure 1 of the electric scooter of the present invention is arranged at the rear wheel position of the scooter 2 in this embodiment, but it is not limited thereto. The rear swing arm structure 1 of the scooter includes a pedal rear side portion 10, a telescopic shock absorbing unit 20, two swing arm units 30, two first connecting rods 40 and a second connecting rod 50. The detailed description is as follows:

[0025] The pedal rear portion 10 is provided with a first set of receiving seats 11 and two second sets of receiving seats 12 .

[0026] One end of the telescopic shock absorbing unit 20 is movably pivoted to the first assembly seat 11 .

[0027] The swing arm unit 30 has one end movably pivoted to the first position of the second assembly seat 12 , and the other end is provided with a rear wheel assembly portion 31 for assembly with a rear wheel 60 .

[0028] The first connecting rod 40 has one end movably pivoted to the lower end of the telescopic shock absorbing unit 20 , and the other end movably pivoted to the second position of the second assembly seat 12 .

[0029] The second connecting rod 50 has one end movably pivoted to the swing arm unit 30 , and the other end movably pivoted to the first connecting rod 40 .

[0030] The telescopic shock absorbing unit 20 is movably pivoted to the first assembly seat 11 by means of a shaft 13 that passes through the first assembly seat 11 and one end of the telescopic shock absorbing unit 20 . Both ends of the shaft 13 are locked by screws 15 .

[0031] The swing arm unit 30 is movably pivoted to the first position of the second assembly seat 12 by a shaft 32 passing through the first position of the second assembly seat 12 and one end of the swing arm unit 30 . Both ends of the shaft 32 are locked by two locking covers 33 and screws.

[0032] The surface of the shaft rod 32 is further sleeved with a shaft sleeve 34, and the two side end surfaces of the shaft sleeve 34 are stopped at the corresponding surfaces of the swing arm unit 30, so that a space is defined between the swing arm units 30 to avoid interference with the movement of the telescopic shock absorbing unit 20, the first connecting rod 40 and the second connecting rod 50.

[0033] The first connecting rod 40 passes through the telescopic shock absorbing unit 20 and one end of the first connecting rod 40 through a shaft 41 and is movably pivoted to the other end of the telescopic shock absorbing unit 20 . Both ends of the shaft 41 are locked by screws.

[0034] The first connecting rod 40 is movably pivoted to the other end of the telescopic shock absorbing unit 20 by means of an axle 14 passing through the second position of the second assembly seat 12 and the other end of the first connecting rod 40. The two ends of the axle 14 are locked by screws. Two bearings 42 are further provided at the pivot point of the other end of the first connecting rod 40.

[0035] The surface of the shaft rod 14 is further sleeved with a shaft sleeve 43 , and the two side end surfaces of the shaft sleeve 43 stop the corresponding surfaces of the first connecting rod 40 , so that a space is defined between the first connecting rods 40 to avoid interfering with the operation of the telescopic shock absorbing unit 20 .

[0036] The first link 40 has a V-shape.

[0037] The second connecting rod 50 is movably pivoted to the swing arm unit 30 by means of a shaft 35 passing through the swing arm unit 30 and one end of the second connecting rod 50 . Both ends of the shaft 35 are locked by screws.

[0038] The surface of the shaft 35 is further sleeved with two positioning sleeves 36, one side of the positioning sleeve 36 is screwed and stopped on the corresponding surface of the swing arm unit 30, and one end of the second connecting rod 50 is stopped between the two positioning sleeves 36 to position one end of the second connecting rod 50 to prevent it from sliding improperly on the shaft 35.

[0039] The second connecting rod 50 is movably pivoted to the first connecting rod 40 by a shaft 44 passing through the first connecting rod 40 and the other end of the second connecting rod 50 . Both ends of the shaft 44 are locked by screws.

[0040] The above is an introduction to the components and their composition of the present invention. Next, the use characteristics and effects are introduced as follows:

[0041] Please refer to Figure 5 , Figure 6 and Figure 7 As shown, when the electric scooter 2 is ridden on a bumpy and uneven road surface or encounters a pothole on the road surface, the rear wheel 60 will be subjected to the impact force of the bump vibration and will swing upward together with the swing arm unit 30. The upward swing of the swing arm unit 30 will link the second connecting rod 50, and the second connecting rod 50 will push the first connecting rod 40 to swing upward, thereby causing one end of the first connecting rod 40 to compress the telescopic shock absorbing unit 20 to perform a shock absorbing stroke. Since the telescopic shock absorbing unit 20 has a damping effect, a shock absorbing and buffering force can be generated.

[0042] It should be particularly emphasized that the swing distance A of one end of the first link 40 can automatically correspond to the swing distance B of the rear wheel assembly part 31 of the swing arm unit 30. In this embodiment, the swing distance A of one end of the first link 40 is equal to the swing distance B of the rear wheel assembly part 31, that is, through the linkage relationship and action between the swing arm unit 30, the second link 50 and the first link 40, the shock absorption stroke of the telescopic shock absorbing unit 20 is longer than the common one, and the length of the shock absorption stroke automatically corresponds to the vibration degree of the rear wheel 60 in various sliding states and different road surfaces of the scooter 2, so as to achieve a balance of shock absorption and buffering force, avoid being too hard or too soft, and in addition to improving the comfort of shock absorption, avoid tail swinging and slipping during sliding, and improve the grip during turning and side bending, so as to improve the overall control smoothness of the scooter 2 and the safety of sliding on the road.

[0043] In summary, the present invention does achieve the intended purpose, providing a method for making the shock-absorbing stroke of the telescopic shock-absorbing unit shorter or longer, which can automatically correspond to the vibration of the rear wheel in various sliding states and on different road surfaces of the electric scooter, achieve a balance of shock-absorbing and buffering forces, and avoid a rear swing arm structure of the scooter that is too hard or too soft. It has practical value, and a patent application is filed in accordance with the law. However, the above is only a preferred embodiment of the present invention, and the scope of implementation of the present invention cannot be limited thereto; therefore, all simple equivalent changes and modifications made according to the scope of the patent application of the present invention and the content of the invention specification should still fall within the scope covered by the patent of the present invention.

Claims

1. A rear swing arm structure of an electric scooter, comprising a pedal rear side portion, a telescopic shock absorbing unit, two swing arm units, a first connecting rod, and two second connecting rods, characterized in that: The rear side of the pedal is provided with a first set of receiving seats and two second sets of receiving seats; The telescopic shock-absorbing unit has one end movably pivoted to the first set of seats; The swing arm unit, one end of which is movably pivoted to the first position of the second assembly seat, and the other end of which is provided with a wheel assembly portion for assembly with a rear wheel; The first connecting rod, one end of which is movably pivoted to the other end of the telescopic shock-absorbing unit, and the other end of which is movably pivoted to the second position of the second assembly seat; One end of the second connecting rod is movably pivoted to the swing arm unit, and the other end of the second connecting rod is movably pivoted to the first connecting rod.

2. The rear swing arm structure of the electric scooter according to claim 1, characterized in that: in, The telescopic shock-absorbing unit is movably pivoted to the first assembly seat through a shaft rod penetrating the first assembly seat and one end of the telescopic shock-absorbing unit, and the two ends of the shaft rod are locked by screws.

3. The rear swing arm structure of the electric scooter according to claim 1, characterized in that: in, The swing arm unit is movably pivoted to the first position of the second assembly seat by a shaft rod penetrating the first position of the second assembly seat and one end of the swing arm unit. The two ends of the shaft rod are locked by two locking covers and screws.

4. The rear swing arm structure of the electric scooter according to claim 3, characterized in that: in, The surface of the shaft rod is further sleeved with a shaft sleeve, and the two side end surfaces of the shaft sleeve are stopped at the corresponding surfaces of the swing arm unit, so that a space is defined between the swing arm units to avoid interference with the movement of the telescopic shock absorbing unit, the first connecting rod and the second connecting rod.

5. The rear swing arm structure of the electric scooter according to claim 1, characterized in that: in, The first connecting rod passes through the telescopic shock absorbing unit and one end of the first connecting rod through an axle rod, and is movably pivoted to the other end of the telescopic shock absorbing unit. The two ends of the axle rod are locked by screws.

6. The rear swing arm structure of the electric scooter according to claim 1, characterized in that: in, The first connecting rod is movably pivoted to the other end of the telescopic shock absorbing unit by a shaft rod passing through the second position of the second assembly seat and the other end of the first connecting rod. The two ends of the shaft rod are locked by screws. Two bearings are further arranged at the pivot point of the other end of the first connecting rod.

7. The rear swing arm structure of the electric scooter according to claim 6, characterized in that: in, The surface of the shaft rod is further sleeved with a shaft sleeve, and the two side end surfaces of the shaft sleeve are stopped at the corresponding surfaces of the first connecting rod, so that a space is defined between the first connecting rods to avoid interference with the actuation of the telescopic shock-absorbing unit.

8. The rear swing arm structure of the electric scooter according to claim 1, characterized in that: in, The second connecting rod is movably pivoted to the swing arm unit through an axle rod penetrating the swing arm unit and one end of the second connecting rod, and the two ends of the axle rod are locked by screws.

9. The rear swing arm structure of the electric scooter according to claim 8, characterized in that: in, The surface of the shaft is further sleeved with two positioning sleeves, one side of which is screwed and stopped on the corresponding surface of the swing arm unit, and the space between the two positioning sleeves stops one end of the second connecting rod to position one end of the second connecting rod to prevent it from sliding improperly on the shaft.

10. The rear swing arm structure of the electric scooter according to claim 1, characterized in that: in, The second connecting rod is movably pivoted to the first connecting rod through an axle rod passing through the first connecting rod and the other end of the second connecting rod. The two ends of the axle rod are locked by screws.

Images