Crank torque measurement device, electric bicycle and intelligent bicycle

Abstract

The invention discloses a crank torque measurement device which comprises a circular sleeve, a first bearing, a second bearing, a first bearing block supporting the first bearing, a bearing module arranged in the circular sleeve and close to a chain disk end, and a sensing device. An intermediate shaft of an electric bicycle or an intermediate shaft of an intelligent bicycle penetrates through the circular sleeve, the first bearing and the second bearing, and two ends of the intermediate shaft of the electric bicycle or two ends of the intermediate shaft of the intelligent bicycle are exposed on two sides of the circular sleeve respectively. A guiding cavity is arranged on the bearing module, and the first bearing block is placed in the guiding cavity. The sensing device is arranged in the guiding cavity and used for measuring a relative displacement value or a pressure value between the first bearing block and the bearing module. The invention further relates to the electric bicycle and the intelligent bicycle. The crank torque measurement device is simple in structure and enables a controller of the electric bicycle to adjust the magnitude of motor torque according to collected displacement or pressure electric signals to achieve organic bonding of manpower and electric power of the electric bicycle. Crank torque of the intelligent bicycle can be calculated and recorded in real time, and scientific data are provided for fitness and training of people riding the intelligent bicycles.

Description

technical field [0001] The invention relates to the field of electric bicycles and bicycles, in particular to a crank torque measuring device, electric bicycles and smart bicycles. Background technique [0002] An electric bicycle refers to a widely used transportation tool that uses batteries as auxiliary energy sources on the basis of ordinary bicycles, and is equipped with electromechanical integration of motors, controllers, batteries, steering handles, brake handles and other operating components and display instrument systems; its most The important feature is to integrate the power of the motor and the pedal force of the rider as the driving force; in order to achieve the organic combination of manpower and electricity, it is necessary to set up a sensing device on the crank torque transmission path of the electric bicycle pedal to sense Measure the torque of the crank, and control the output power of the motor according to the sensing results, so as to reduce the ped...

AI Technical Summary

Problems solved by technology

[0004] The traditional speed sensor does not measure the crank torque of the pedal part of the electric bicycle or smart bicycle, and cannot judge the crank torque when the rider steps on the pedal, so that manpower and electricity cannot be organically combined, thus easily causing loss of control when riding Serious safety hazards such as speeding when driving, and the current commonly used torque sensor measures the torque signal from the chain plate rotating on the electric bicycle. The stability of signal acquisition and transmission in this way is poor, and the structure is complex and the production cost is high. High, so it can't really promote popular use in the market

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