Mid-motor mounting structure for electric two-wheeled vehicle and two-wheeled vehicle comprising mid-motor mounting structure

Abstract

The invention discloses a mid-motor mounting structure for an electric two-wheeled vehicle and the electric two-wheeled vehicle comprising the mid-motor mounting structure. The electric two-wheeled vehicle comprises a front bracket, a front wheel, a handle, a frame, the mounting structure, a drive motor, a rear wheel and a battery; the mounting structure comprises a left rear fork, a right rear fork, a lower connecting body and an upper connecting body, wherein two ends of the lower connecting body are connected with the lower end of the left rear fork and the lower end of the right rear fork respectively; two ends of the upper connecting body are connected with the upper end of the left rear fork and the upper end of the right rear fork respectively. With the adoption of the invention, front space formed by the left rear fork and the right rear fork is used for mounting the drive motor, space of the frame is not occupied, and more space is provided for mounting parts such as the battery and the like during arranging of the whole vehicle; meanwhile, the center of the gravity of the drive motor is close to a rear fork shaft and far away from a rear axle, so that influence on equivalent unsprung mass of a suspension system is smaller.

Description

technical field [0001] The invention relates to the technical field of an electric two-wheel vehicle, in particular to a middle motor installation structure of the electric two-wheel vehicle. Background technique [0002] The motor mounting structures of existing electric two-wheeled vehicles mainly contain the following types: [0003] (1) Wheel hub motor, the motor is installed on the driving wheel shaft and installed concentrically. Because the hub motor is integrated in the wheel rim, it is convenient for car body layout, and at the same time, the cost is low and the transmission is direct. It is the most widely used method. [0004] (2) The motor is mounted on the side, the motor is installed on the side of the driving wheel, and is mounted on the rocker arm hanging from the driving wheel, and the wheel can be driven by the reduction mechanism. [0005] (3) The motor is mounted in the middle, and the motor is installed on the main frame, similar to the position of the...

AI Technical Summary

Problems solved by technology

[0007] (1) The hub motor is installed on the wheel shaft, which will cause the unsprung mass of the suspension system to be too large due to its own weight, which will affect the shock absorption effect

The motor directly receives the ground vibration, and the working condition is bad, which has an adverse effect on the service life

And there is no deceleration system, which is not conducive to the realization of high torque drive

At the same time, the volume inside the rim is limited, making it difficult to arrange high-power motors

Because the driving torque of the motor is completely acting on the rear axle, the axle of the flat fork is under too much force, which is easy to cause damage and hidden dangers

[0008] (2) The side-mounted motor can achieve high torque through deceleration, but there are still problems such as excessive unsprung mass, large vibration at the motor, and poor working conditions. At the same time, the center of gravity of the vehicle will be biased to one side, which will affect the driving experience

[0009] (3) The motor in the middle can avoid the shortcomings of the above two motor installation methods, but the motor occupies the space at the main frame, which is not conducive to the installation and arrangement of electric vehicle batteries

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