Arc Friction Drive Adaptive Automatic Transmission for Electric Vehicles

Abstract

The invention discloses an arc-shaped friction transmission self-adaptation automatic transmission used for an electric automobile. The automatic transmission comprises a box body, a transmission shaft, a low-speed gear transmission mechanism and a mechanical intelligentized self-adaptation variable speed assembly, an arc-shaped friction face friction transmission pair is adopted for the friction face of a driving friction disc and the friction face of a driven friction disc of the mechanical intelligentized self-adaptation variable speed assembly, one end of the transmission shaft extends out of the box body, and the power is output to a rear axle of the automobile through an output reducing mechanism. According to the automatic transmission, a separated combination structure is formed through the friction discs, the automatic transmission has the advantage of being sensitive in reaction, and the axial dimension is small; meanwhile, the structure that radial cross section arcs of the friction faces are inlaid in each other is adopted, connection of the friction faces is dispersed, it is facilitated to guarantee the coaxiality of the driving friction disc and the driven friction disc, it is also facilitated to enlarge the friction faces, and it is guaranteed to maintain good transmission under the condition of limited elastic force; it is also facilitated to guarantee the sensitivity of the separation and connection, the transmission precision is improved, and the automatic transmission is applicable to the field of electric automobiles.

Description

technical field [0001] The invention relates to a motor vehicle transmission, in particular to an arc-shaped friction transmission self-adaptive automatic transmission for an electric vehicle. 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, going uphill a...

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Problems solved by technology

[0006] In view of this, the object of the present invention is to provide an adaptive automatic transmission for arc friction transmission of electric vehicles, which can not only automatically change gears and change gears without cutting off the driving force as the driving resistance changes, but also solve the problem of torque transmission. —Small speed changes cannot meet the problem of road use under complex conditions; long-term operation can still ensure stable support, reduce operating noise, ensure operating comfort and improve transmission efficiency, thereby reducing energy consumption; change the fast and slow gear engagement, and the axial engagement of the separation mechanism In the current situation of long surface stroke, the separation and engagement are fast and thorough, which is conducive to improving the transmission accuracy. After long-term use, the overall shape and position tolerance will still be guaranteed, thereby ensuring the stability of the transmission.

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