Front wheel driven electric bicycle

Abstract

This invention provides a front wheel driving power-assisted bicycle being safe in driving and running even while a stand is erected during stop and a rear wheel floats during running on a bumpy road. In this invention, the front wheel driving power-assisted bicycle comprises: a main frame of a bicycle main body, a head pipe, and a seat tube are mutually connected. A handle and a front wheel are attached to the head pipe, and a panel-like casing incorporating a motor is provided in a part of a rotary shaft in a hub of the front wheel. Moreover, the rear wheel supported on a frame of the rear wheel is rotated by a driving force in a human power driving part. A means for detecting ascent and descent conditions of the stand is provided in a mechanism of the stand, and conducting electricity to the motor built in the panel-like casing is stopped when the means detects the descent condition of the stand. Moreover, a means for detecting a floating condition of the rear wheel is provided in the frame of the rear wheel, and conducting an electric current to the motor built in the panel-like casing is stopped when the detection means detects the floating condition of the rear wheel.

Description

technical field [0001] The present invention relates to an electric bicycle capable of being driven by using the driving force of a motor to assist the driving force of human power. Background technique [0002] In recent years, there are both human-powered drive parts that use human power to drive and electric drive parts that use electric motors to drive, and the motor can be driven according to the magnitude of the human-powered driving force so that the driving force of the motor can be used to assist the human-powered driving force to drive. Electric bicycles are becoming more and more popular in the market. [0003] In the patent application proposed by the present applicant, an electric bicycle in which the rear wheel is directly driven to rotate by an electric motor has been disclosed, and this electric bicycle is called a so-called rear wheel drive type electric bicycle. And, as disclosed in Japanese No. 329873 / 1995, No. 150981 / 1996, and No. 207875 / 1996 Patent Appl...

AI Technical Summary

Problems solved by technology

[0004] However, this front-wheel drive type electric bicycle belonging to the prior art has the possibility that when the vehicle body is supported in an upright state when the vehicle body is in a stopped state, the freely liftable support frame is in a lowered state, that is, When the so-called support frame is in an upright state, if the pedals are pedaled, the bicycle will change from a stopped state to a sudden forward state due to the detection of this human force moment.

Moreover, this problem is more serious for the occasion of using a double-leg type support frame

When traveling on uneven roads, this front-wheel drive type electric bicycle in the prior art will generate electric driving force even if the rear wheel is in a floating state, so there is also a problem of safety in the process of traveling. good question

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