Electric scooter

Abstract

The invention relates to a personal vehicle, in particular to an electric scooter. The essential technical scheme of the invention is that the steering system of the electric scooter comprises a rotatable platform, the platform is composed of an annular base, the base is movably fixed in an opening in a pedal, the base is provided with a central opening, a wheel is arranged in the central opening, the wheel is fixed on the base, and the rotary platform is arranged on the base. A motor is mounted on the rotatable platform. According to the technical achievement, the maintainability of the electric driving device is improved, and the risk that a steering system of the electric scooter breaks down is reduced.

Description

Technical Field

[0001] The present invention relates to personal transportation vehicles, and in particular to electric scooters. Technical Background

[0002] The prior art discloses an electric scooter comprising a deck with a steering system, which includes an electric drive and a steering column connected to a wheel, wherein the electric drive is designed as a motorized wheel connected to the steering column via a U-shaped fork, wherein the U-shaped fork is movably fastened to the deck via an inclined cylindrical element, and the cylindrical element is fixed at the opening of the deck via a bearing assembly, so that the U-shaped fork can be tilted laterally to the scooter [CN109292032A, published on January 2, 2019, IPC: B62K 15 / 006].

[0003] The disadvantages of the prior art are that the maintainability of the electric drive device is low and the risk of failure of the steering system is high. The maintainability of the electric drive device is poor because the electric wheel needs to be replaced when the electric drive device fails, and the risk of failure of the steering system is high because the cylindrical element, the bearing assembly and the pedal are subjected to high loads at the connection between the steering system and the pedal. The above disadvantages make the use and maintenance of the electric scooter complicated, and a new structural design of its steering system is required to eliminate these two existing problems and improve the driving performance of the electric scooter. Summary of the invention

[0004] The technical problem to be solved by the present invention is to improve the driving performance and reliability of an electric scooter.

[0005] The technical achievement of the present invention improves the maintainability of the electric drive device and reduces the risk of failure of the steering system of the electric scooter.

[0006] An additional technical achievement of the present invention is to improve the maintainability of the steering system of the electric scooter.

[0007] Another additional technical achievement of the present invention makes it possible to change the dynamic characteristics of the electric scooter.

[0008] The first technical solution of the invention provided by the present invention is as follows.

[0009] The electric scooter comprises a deck, and the deck has an opening for installing a steering system, and the steering system includes an electric drive and a steering column connected to a wheel axle. Compared with the prior art, the electric drive is designed as an electric motor with a follower, wherein the follower is fixed to the wheel and can transmit torque from the motor to the wheel, and the steering column is connected to the wheel through a rotatable platform, and the rotatable platform is movably fastened at the opening of the deck through an annular base and a bearing assembly, wherein the annular base has an opening aligned with the opening of the deck, and the wheel with the follower is placed in the opening of the base and fixed to the base, and the electric motor is mounted on the rotatable platform.

[0010] The second invention technical solution provided by the present invention is as follows:

[0011] The steering system of the electric scooter includes a wheel, a steering column connected to the wheel axle, and an electric drive device capable of transmitting torque to the wheel. Compared with the prior art, the steering system includes a rotatable platform for fixing the steering column, the rotatable platform includes an annular base movably fixed at the pedal opening through a bearing assembly, the electric drive device is designed as an electric motor mounted on the rotatable platform, and has a driver, a follower, and an actuating member, wherein the follower is fixed on the wheel and can transmit torque from the motor to the wheel, the annular base has a central opening, a wheel is placed in the central opening, the wheel is fixed on the annular base, and the electric motor is mounted on the rotatable platform.

[0012] The steering system comprises an electric drive which ensures the dynamic stability of the scooter in the longitudinal plane. The electric drive is designed as an electric motor with a driven element, wherein the driven element is fixed to the wheel and is capable of transmitting the torque of the electric motor to the wheel, thereby improving the maintainability of the electric drive and reducing the risk of failure of the steering system of the electric scooter comprising such an electric drive, because in the event of a failure only the electric drive can be replaced. In addition, this makes it possible to install electric motors with different power characteristics, thereby changing the dynamic characteristics of the electric scooter.

[0013] The driving member, the driven member and the transmission member improve the maintainability of the electric drive device because they can be replaced in the event of a malfunction. Pulleys, sprockets, cone disks, toothed gears and other similar elements can be used as driving members and driven members. The transmission member transmits the torque from the driving member to the driven member and, depending on its type, can be a V-belt or toothed belt, a chain, an additional toothed gear, or a driving member or a driven member designed as a toothed gear. In addition, the structural design includes a driving member, a driven member and a transmission member, which has a transmission function and can change the torque or maximum speed characteristics of the scooter, so that the power characteristics of the electric scooter can be changed.

[0014] The driven element is fixed to the wheel and is able to transfer the torque from the motor to the wheel. To this end, it can be rigidly fixed by a removable or fixed connection, or it can be connected to the wheel by a sleeve-type or elastic clutch, a freewheel or other type of clutch.

[0015] The rotatable platform allows the steering system to rotate relative to the pedals and includes a ring-shaped base for this purpose. The ring-shaped base has a central opening, and the wheel is placed therein and fixed to the ring-shaped base, wherein the follower is connected to the wheel, thereby ensuring that the wheel receives torque from the electric motor and rolls.

[0016] The central opening in the base can be of any shape and size suitable for mounting the wheel and follower in the opening to a desired depth. The wheel axle can pass through the axis of the central opening. The wheel can be fixed to the ring base by fixing the wheel axle in holes, grooves or slots of the ring base. However, in order to improve the serviceability of the steering system of the electric scooter and simplify the manufacture of the ring base, the wheel can be fixed by using removable wheel axle fasteners, such as side bars or clamps.

[0017] The rotatable platform is where the motor is mounted, so the ring base may have holes or elements for removable or fixed mounting of the motor. In addition, to reduce the risk of failure of the ring base, the rotatable platform may have a motor mounting bracket connecting the ring base and the steering column. In addition, to reduce the risk of failure of the electric drive unit, the motor mounting bracket may be designed as a protective frame with a cavity for placing the motor.

[0018] The annular base may be monolithic; however, to improve serviceability and simplify manufacturing, it may consist of removable parts, with the wheels fixed to one part and the motor and / or steering column fixed to another part. There is preferably an insert between these two parts to improve load distribution and further reduce the risk of failure of the electric scooter's steering system.

[0019] The annular base is movably fastened in the pedal opening, thereby enabling the steering column to turn the wheel. The movable fastening means is provided by a bearing assembly, which provides an interface between the outer side of the annular base and the surface and edge of the pedal opening. The bearing assembly may consist of one or more sliding and / or rolling friction pairs. The cross-section of the annular base may be rectangular, square or any other simple or shaped cross-section. In order to reduce the risk of malfunction of the steering system, the annular base preferably has a U-shaped cross-section. In this case, the bearing assembly may consist of two friction pairs, mounted at the junction of the side of the annular base with the U-shaped cross-section and the pedal.

[0020] The steering column may consist of a pole with handles on which are mounted the means for controlling and monitoring the characteristics of the electric scooter. To secure the steering column, the rotatable platform may have means for removable or fixed attachment, which may be located on the annular base or on the motor mounting bracket (if any). The pedals are the bearing surface for receiving the rider.

[0021] The present invention can be manufactured using known materials and known methods, which indicates that it meets the patent standards for industrial application.

[0022] The invention has a number of essential features which are not obvious to a person skilled in the art; in particular, the electric drive is designed as an electric motor with a follower, the follower being fixed to the wheel and capable of transmitting torque from the electric motor to the wheel, the steering column being connected to the wheel via a rotatable platform, the rotatable platform being movably fixedly mounted in the pedal opening via an annular base, the opening of the annular base being matingly connected to the pedal opening, the wheel with the follower being placed in the base opening and fixed to the base, the electric motor being mounted on the rotatable platform. The structural design of the electric scooter and its steering system allows the electric drive and / or the electric drive element transmitting torque from the electric motor to the wheel to be quickly replaced in the event of a malfunction, and the load distribution at the connection between the steering system and the pedal is improved due to the use of an annular base and the placement of the wheel and follower in the central opening of the base.

[0023] The technical achievement disclosed by the present invention improves the maintainability of the electric drive device, reduces the risk of failure of the steering system of the electric scooter, and thus improves the driving performance and reliability of the electric scooter.

[0024] The invention has a series of essential features that are not obvious to a person skilled in the art, which indicates that it meets the novelty criteria for patents.

[0025] An electric scooter, whose steering system is designed as a rotatable platform with an annular base, which provides a turning function and can accommodate the driving wheel of the electric scooter and all elements of the electric drive, including the electric motor, which is also mounted on the rotatable platform, which is non-obvious to a person skilled in the art. The proposed structural design not only simplifies the use and maintenance of the electric scooter, but also allows the dynamic characteristics of the electric scooter to be changed within a wide range due to the use of a series of electric drive elements instead of electric wheels. In addition, the proposed structural design ensures a more efficient distribution of the load on the pedal. In summary, this structural design makes it possible to manufacture the individual elements of the pedal and the electric drive device from lightweight structural materials, thereby significantly reducing the weight of the electric scooter, which is particularly important for personal transportation vehicles used in urban environments.

[0026] Therefore, the present invention meets the inventiveness criteria for patents.

[0027] The various technical solutions in the present invention are interrelated and belong to a general inventive concept, which involves a steering system as a part of an electric scooter, which shows that the present invention meets the unity standard of a patent that can be granted patent rights. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings of the present invention are described below:

[0029] Figure 1 It is an electric scooter; general isometric view;

[0030] Figure 2 The steering system of the electric scooter with the motor and steering column disassembled; longitudinal section view, side view;

[0031] Figure 3 A steering system of an electric scooter equipped with an electric motor; a transverse section view along the wheel axle, and a back view;

[0032] Figure 4 The steering system of an electric scooter equipped with an electric motor; top view. DETAILED DESCRIPTION

[0033] In order to illustrate the specific implementation of the present invention and ensure a more comprehensive understanding of the essential content of the present invention, an embodiment is provided below, which can be modified or supplemented in any way, and the present invention is not limited to the provided embodiment in any way.

[0034] The electric scooter comprises a pedal 1 with a steering system, which comprises a rotatable platform and an electric drive device.

[0035] The rotatable platform comprises an annular base, which is composed of a flange 2 and a flange 3, between which there is an annular insert 4, wherein there is a bracket 5, the bracket 5 is designed as a protection frame, the steering column is connected and fixed to the bracket 5, the bracket 5 is fixed to the flange 2, the axle 7 is fixed to the flange 3 through the side bars 6, and the wheels 8 are fixed to the axle 7. The bracket 5, the flange 2, the flange 3 and the side bars 6 can all be fixed by ordinary bolts and nuts.

[0036] The electric drive device comprises an electric motor 9 fixed to a bracket 5 by bolts and nuts and a transmission system, the transmission system comprising a pulley 10 fixed to the motor shaft 9 and a pulley 11 fixed to the wheel 8 and connected to the pulley 10 by a toothed belt. The wheel of the pulley 11 traverses the planes of the holes of the flange 2, the flange 3 and the annular insert 4.

[0037] The rotatable platform is movably fastened in the opening of the pedal 1 by a bearing assembly 12 installed between the flange 2, the flange 3 and the pedal 1, and the bearing assembly 12 consists of two friction pairs installed at the connection between the side of the annular base with a U-shaped cross-section and the pedal 1.

[0038] The present invention operates as follows.

[0039] The electric scooter is operated by a user, wherein the wheels are fixed to the flange 3 by the side rod 6, the steering column is fixed to the flange 2, and the flange is connected to the annular insert 4, which improves the shock absorbing characteristics of the rotatable platform structure design, and distributes the load on the edge of the pedal 1 opening, reduces the risk of failure of the pedal 1 and the annular base, and thus reduces the risk of failure of the steering system. If one of the components 2, 3, 4 or 6 fails, only one component needs to be replaced, without replacing the annular base or the entire rotatable platform.

[0040] If the motor 9 fails, there is no need to remove or replace the wheel, and a new motor 9 can be installed by simply loosening and tightening the bolts and nuts used to fix the motor to the bracket 5. In addition, it is also possible to install a motor 9 with different power characteristics and change the torque or maximum speed characteristics of the electric scooter by using pulleys 10 and 11 of other diameters or replacing them with other elements.

[0041] The above technical solution improves the maintainability of the electric drive device, reduces the risk of failure of the steering system of the electric scooter, and thus improves the driving performance and reliability of the electric scooter.

Claims

1. An electric scooter, comprising a pedal, the pedal having an opening for installing a steering system, the steering system comprising an electric drive device and a steering column, the steering column being connected to a wheel axle, characterized in that: The electric drive device is designed as an electric motor with a driven member, which is fixed on the wheel and can transmit the torque of the electric motor to the wheel; the steering column is connected to the wheel through a rotatable platform, and the rotatable platform is movably fixed at the pedal opening through an annular base and a bearing assembly, the annular base has an opening that matches the pedal opening, the wheel with the driven member is placed at the base opening and fixed on the base, and the electric motor is installed on the rotatable platform.

2. The electric scooter according to claim 1, characterized in that: The wheels are secured to the ring base by removable axle fasteners.

3. The electric scooter according to claim 1, characterized in that: The rotatable platform includes a motor mounting bracket for connecting the ring base and the steering column.

4. The electric scooter according to claim 3, characterized in that: The bracket is designed as a protective frame, and the frame is provided with a cavity for accommodating the electric motor.

5. The electric scooter according to claim 1, characterized in that: The ring-shaped base consists of removable parts, with the wheels fixed to one part and the motor and / or steering column fixed to another part.

6. The electric scooter according to claim 5, characterized in that: There is an insert between the two removable parts of the ring base.

7. A steering system for an electric scooter, comprising a wheel, a steering column connected to the wheel axle and an electric drive device capable of transmitting torque to the wheel, characterized in that: The invention comprises a rotatable platform for fixing a steering column, the platform comprises an annular base, the base is movably fixed at a deck opening through a bearing assembly, the electric drive device is designed as an electric motor installed on the rotatable platform, and has a driving member, a driven member and a transmission member, the driven member is fixed on the wheel and can transmit the torque of the electric motor to the wheel through the transmission member, and the annular base has a central opening, the wheel is placed therein and fixed on the base.

8. The steering system according to claim 7, characterized in that: The cross section of the annular bottom surface is U-shaped.

9. The steering system according to claim 8, characterized in that: The bearing assembly consists of two friction pairs mounted at the junction of the side of the annular base and the pedal.

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