Patent Application
20250091688
The present invention relates to the field of electric scooter technology, particularly to a telescopic shock-absorbing unit that can automatically adjust the shock-absorbing stroke of the rear wheel in response to the scooter's various sliding statuses and different road surfaces. This adjustment achieves a balance in shock-absorbing and cushioning forces, thereby preventing the rear swing arm structure of the scooter from being too hard or too soft.
As electric scooters are generally heavy, when riden on bumpy and uneven roads or encountering potholes, they are subjected to greater vibration and impact, which will make the riders feel uncomfortable. The riding stability is also insufficient, which affects the riding safety.
Therefore, electric scooters, especially large electric scooters, are usually equipped with shock absorbers to improve riding comfort and stability, as well as safety performance.
In order to reduce the large bump and vibration impact force encountered by the large size vehicle, large electric scooters are usually equipped with shock absorbers on the front and rear wheels. The common electric scooter rear wheel shock absorber structure usually includes a pedal rear part, a rear swing arm, and a shock absorber, wherein one end of the rear swing arm is movably connected to the pedal rear part, while 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 part, and the lower side is connected to the rear swing arm. However, this shock absorber has at least the following disadvantages:
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 shock absorbing stroke length 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 vibration impact force, the vibration magnitude of the rear wheel is always greater than the shock absorption of the shock absorber. The stroke, i.e. the shock absorption and cushioning force generated by the shock absorber, and the vibration and impact force of the rear wheel can never be effectively balanced. Once the electric scooter is in various sliding statuses and on different road surfaces, the shock absorption and cushioning force of the shock absorber will often be too hard or too soft, which will affect the shock absorption comfort of the electric scooter, and it is easy to drift and slip during sliding, and the rear wheel has poor grip, which affects the smoothness of the electric scooter's control and the safety of sliding on the road.
In summary, the rear wheel shock-absorbing structure and function of traditional electric scooters are still not ideal, and there is a need for improvement.
In view of this, the inventor of the present invention, based on the concept of continuous product improvement and innovation, and many years of professional practical experience in this field, as well as active and dedicated research and development, and considerable design experiments.
An object of the present invention is to provide a telescopic shock-absorbing unit with a shock-absorbing stroke length that can automatically correspond to the vibration of the rear wheel in various sliding states and on different road surfaces of the electric scooter, so as to achieve a balance of shock-absorbing and buffering forces and avoid a scooter rear swing arm structure to be too hard or too soft.
To achieve the above-mentioned purposes, the invention includes a pedal rear portion, a telescopic shock absorber unit, two swing arm units, two first connecting rods and a second connecting rod, wherein the pedal rear portion is provided with a first assembly seat and two second assembly seats; one end of the telescopic shock absorber unit is movably pivoted to the first assembly seat; one end of the swing arm unit is movably pivoted to the first position of the second assembly seat, and the other end of the swing arm unit is provided with a wheel body assembly portion for assembling a rear wheel; one end of the first connecting rod is movably pivoted to the other end of the telescopic shock absorber unit, and the other end of the first connecting rod 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.
The effective improvement of the present invention is 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 of the swing arm unit, i.e. the shock absorbing stroke length of the telescopic shock absorbing unit. It is aimed at the scooter in various sliding statuses and different road surfaces, and automatically corresponds to the vibration degree of the rear wheel to achieve the balance of the shock absorbing and buffering force, avoiding being too hard or too soft. In addition to improving the shock absorbing comfort, it can avoid tail swinging and slipping during sliding, and enhance the grip when turning and bending, as well as improve the overall control smoothness of the scooter and the safety of sliding on the road.
Other features and specific implementation examples of this invention are further understood in the following detailed descriptions with accompanying drawings.
As shown in
The rear pedal portion 10 is provided with a first set of receiving seats 11 and two second sets of receiving seats 12.
One end of the telescopic shock absorbing unit 20 is movably connected to the first set of receiving seats 11.
The swing arm unit 30 has one end movably pivoted to the first position of the second receiving seats 12 and the other end is provided with a rear wheel assembly portion 31 for assembling a rear wheel 60.
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 set of receiving seats 12.
The second connecting rod 50 has one end movably connected to the swing arm unit 30 and the other end movably connected to the first connecting rod 40.
The telescopic shock absorbing unit 20 is movably connected to the first set of receiving seats 11 by a shaft 13 passing through the first set of receiving seats 11 and one end of the telescopic shock absorbing unit 20. Both ends of the shaft 13 are secured by screws 15.
The swing arm unit 30 is movably connected to the first position of the second receiving seat 12 by a shaft rod 32 that passes through the first position of the second receiving seat 12 and one end of the swing arm unit 30. The two ends of the shaft rod 32 are secured by two locking covers 33 and screws.
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.
The first connecting rod 40 passes through the base end of telescopic shock absorbing unit 20 and one end of the first connecting rod 40 through a shaft 41, and is movably connected to the other base end of the telescopic shock absorbing unit 20. Both ends of the shaft 41 are locked by screws.
The first connecting rod 40 is movably pivoted to the second position of the second receiving seat 12 via a shaft 14 that passes through the second position of the second receiving seat 12 and the other end of the first connecting rod 40. The two ends of the shaft 14 are locked by screws 16. Two bearings 42 are further provided at the pivot point of the other end of the first connecting rod 40.
The surface of the shaft 14 is further sleeved with a sleeve 43, and the two side end surfaces of the sleeve 43 are stopped at the corresponding surfaces of the first connecting rod 40, so that a space is defined between the first connecting rod 40 to avoid interference with the movement of the telescopic shock absorbing unit 20.
The first connecting rod 40 is in form of a V shape.
The second connecting rod 50 is movably connected to the swing arm unit 30 via a shaft 35 that passes 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.
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.
The second connecting rod 50 is movably connected 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.
The above is an introduction to the components and their composition of this creation. In addition, the features and functions of use are introduced as follows:
As shown in
It is particularly emphasized that the swing distance A of one end of the first connecting rod 40 can automatically correspond to the swing distance B of the rear wheel assembly 31 of the swing arm unit 30. In this embodiment, the swing distance A of one end of the first connecting rod 40 is equal to the swing distance B of the rear wheel assembly 31. That is, through the linkage relationship and action between the swing arm unit 30, the second connecting rod 50 and the first connecting rod 40, the shock absorption of the telescopic shock absorbing unit 20 is improved. The action stroke is longer than the usual one, and the length of the shock absorbing action stroke is aimed at the scooter 2 in various sliding statuses and different road surfaces, automatically corresponding to the vibration size of the rear wheel 60, to achieve a balance of shock absorption and buffering force, avoid being too hard or too soft, in addition to improving the shock absorption comfort, avoiding tail swinging and slipping during sliding, and improving the grip when turning and bending, and overall improving the smoothness of the scooter 2 control and the safety of sliding on the road.
In summary, the invention has achieved the expected purposes, providing a telescopic shock-absorbing unit with a shock-absorbing stroke length that can automatically correspond to the vibration of the rear wheel in various sliding states and on different road surfaces of the electric scooter, thereby achieving a balance of shock-absorbing and buffering forces and avoiding a scooter rear swing arm structure that is too hard or too soft. It has undoubtedly practical value, and a patent application is filed in accordance with the law.
However, the above are only the preferred embodiments of the present invention and should not be used to limit the scope of implementation of the present invention. Therefore, all simple equivalent changes and modifications made according to the scope of the patent application of this invention and the specification should still fall within the scope of the present patent.
| Number | Date | Country | Kind |
|---|---|---|---|
| 112135554 | Sep 2023 | TW | national |
