Transmission mechanism of automatic variable-speed motor of electric bicycle

Abstract

The invention provides a transmission mechanism of an automatic variable-speed motor of an electric bicycle. The transmission mechanism comprises a motor, an automatic speed changing device, a gear speed-reducing mechanism, and a middle-shaft isolator assembling piece. The transmission mechanism is characterized in that a motor spindle is coaxial and concentric with the speed changing device; the motor spindle is in spline connection with a connection board of the speed changing device; the connection board is connected with a housing; a planetary gear speed-reducing mechanism is mounted on the housing and is fixedly connected with a driving plate with a sobbing block; the driving plate is in the spline connection with a driving gear in a fixed manner; the driving gear is connected with a carrier gear; a carrier driven wheel is connected with a driven gear; the driven gear is integrally provided with a one-way gear ring which forms one-way clutching with the middle-shaft isolator assembling unit; the driven gear is connected with a transmission shaft; the transmission shaft extends to the outer end of a box body and is fixedly connected with a chain wheel; a middle shaft extends to the outside of the box body through a needle roller bearing hole of an inner hole of the transmission shaft; and the chain wheel is connected with a rear wheel of the electric bicycle through a chain.

Description

technical field [0001] The invention relates to an automatic variable speed motor of an electric bicycle, in particular to an electric bicycle with a central type and a pedal function [0002] Chain drive automatic variable speed motor drive mechanism. Background technique [0003] The rapid development of electric bicycles in my country has become the preferred means of transportation for thousands of households. At present, the number of electric bicycles in my country has reached 120 million, and the annual demand is more than 20 million. With the future electric motorcycle standards With the introduction of the new standard, electric bicycles will face serious challenges, especially in the speed and weight restrictions stipulated in the standard, electric bicycles are obviously at a disadvantage. The current power of electric bicycles is generally dominated by brushless hub motors, and its transmission mode runs synchronously with the motor, and the speed and force dista...

AI Technical Summary

Problems solved by technology

The current power of electric bicycles is generally dominated by brushless hub motors, and its transmission mode runs synchronously with the motor, and the speed and force distance cannot be reasonably converted according to demand. It is difficult for this motor to compete in the future market competition regardless of its speed or load. Electric motorcycles compete, especially in some mountainous and hilly areas. Due to the small power of electric bicycle motors, the existing technology cannot meet the actual needs of users in terms of climbing and load. Over-standard amplification power selection

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