Spiral disc type friction transmission self-adaption automatic speed change drive assembly for electric motor car

Abstract

The present invention discloses a spiral disc type friction transmission self-adaption automatic speed change drive assembly for an electric motor car. The spiral disc type friction transmission self-adaption automatic speed change drive assembly comprises a box body, a transmission shaft, a slow gear transmission mechanism, and a mechanical intelligent self-adaption speed change assembly by utilization of disc type friction transmission; and the slow gear transmission mechanism comprises an overrunning clutch, an inner ring of the overrunning clutch sleeves a transmission shaft sleeve, and an inner circle of the inner ring is provided with a spiral cam used for being cooperated with the transmission shaft sleeve. The spiral cam output structure is adopted by the inner ring of the overrunning clutch, the spiral cam is disposed on the transmission shaft sleeve, use of end cams is reduced, and the spiral cam has good flexibility and is sensitive to resistance. The overrunning clutch has the possibility of multiple cam transmission, sensibility and stability of disengaging and engaging of friction transmission are ensured by utilization of the disc type friction transmission, axial dimension of a speed changer is reduced, and the spiral disc type friction transmission self-adaption automatic speed change drive assembly is suitable for hubs and has relatively good flexibility and high transmission precision during the speed change process.

Description

technical field [0001] The invention relates to a motor vehicle transmission, in particular to an electric motorcycle spiral disc friction transmission self-adaptive automatic variable speed drive assembly. Background technique [0002] In the prior art, automobiles, motorcycles, and electric bicycles basically directly control the throttle or current control speed through a speed control handle or an accelerator pedal, or use a manual mechanical automatic transmission mechanism to realize speed change. The operation of the handle or accelerator pedal depends entirely on the driver's operation, which often causes a mismatch between the operation and the driving conditions, resulting in unstable operation of the motor or engine, and stalling. [0003] When the motor vehicle is operated by the rider without knowing the driving resistance, the speed change device is operated and controlled only based on experience, which inevitably has the following problems: 1. When starting, ...

AI Technical Summary

Problems solved by technology

[0006] In view of this, the object of the present invention is to provide a self-adaptive automatic variable speed drive assembly of a spiral disc friction transmission for an electric motorcycle, which can not only automatically perform gear shifting without cutting off the driving force according to changes in driving resistance, but also solve the problem of Small changes in torque-speed cannot meet the problem of road use under complex conditions; at the same time, the overrunning clutch itself, as a necessary transmission component, can transmit smoothly, reducing the matching cam transmission structure, thereby reducing the size of the transmission

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