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electric assist bicycle

An electric power assist, bicycle technology, applied in the direction of vehicle components, rider drive, transportation and packaging, etc., to achieve the effect of extending the usable period

Active Publication Date: 2019-09-06
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] In addition, since the structure uses a dedicated chain as a mechanism for transmitting driving force to the rear wheel and a front derailleur that switches gears, it is difficult to replace the chain with a toothed belt in an external transmission.

Method used

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Examples

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Embodiment Construction

[0056] Hereinafter, an electric assist bicycle according to an embodiment of the present invention will be described based on the drawings. In addition, the left-right direction and front-rear direction in the following description refer to the direction in the state which faces the traveling direction and rides on this electric assist bicycle 1. In addition, the structure of this invention is not limited to the structure demonstrated below.

[0057] figure 1 , figure 2 1 in it is the electric power-assisted bicycle according to the embodiment of the present invention. Such as figure 1 , figure 2 As shown in FIG. The front wheel 3 at the lower end of the front fork 2b; the rear wheel 4 rotatably attached to the rear end of the chain stay 2e; the handlebar 5 for changing the direction of the front wheel 3; the seat 6; 7 and a pedal 8; an electric motor 21 (refer to Figure 4 etc.) and the control unit 24 that performs various electrical controls including the motor 2...

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PUM

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Abstract

An electric power-assisted bicycle, capable of shifting well and preventing the replacement frequency of parts such as chains from becoming fast, and adding sufficient auxiliary driving force, does not cause the problem of interference between the base or the battery and the front derailleur, and thus does not develop a special-purpose bicycle. the front derailleur. The crankshaft (7a) and the electric motor (21) that transmit the human driving force from the pedals rotate around different axes, and a human power transmitting body for transmitting the human driving force is arranged on the outer periphery of the crankshaft (7a). (29), a resultant force transmission body (29) for transmitting the resultant force combining the human driving force and the auxiliary driving force from the electric motor (21) is arranged on the outer periphery of the crankshaft (7a), and the electric motor drive unit (20) is provided with a resultant force transmission body (29). There is a planetary gear mechanism (50) that changes the speed of the resultant force combining the human driving force and the auxiliary driving force from the electric motor (21).

Description

technical field [0001] The present invention relates to an electric assist bicycle capable of traveling by adding an auxiliary driving force generated by an electric motor to a human driving force generated by pedaling force. Background technique [0002] There is known an electric power-assisted bicycle that has a motor powered from an accumulator such as a battery, uses a torque sensor to detect the human driving force consisting of pedaling force applied to the pedals, and adds assistance from the motor corresponding to the human driving force. The driving force (assist power) enables easy driving even when going uphill. [0003] In this electrically assisted bicycle, there is a configuration in which a motor drive unit incorporating a motor and the like is arranged at a portion where a crankshaft is provided. In the electric assist bicycle configured in this way, the heavy motor drive unit is arranged at a lower position in the front-rear direction center of the electri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B62M6/55
CPCB62M6/50B62M6/55
Inventor 川上将史
Owner PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD