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Electric bicycle

A technology of electric bicycles and electric motors, which is applied to vehicle components, rider driving, transportation and packaging, etc., and can solve problems such as difficulty in achieving riding comfort and component wear

Inactive Publication Date: 2013-10-02
SANYO ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, it is difficult to achieve improvement in riding comfort, and parts of the electric bicycle (especially clutches, etc.) may be excessively worn due to impacts.

Method used

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  • Electric bicycle
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Experimental program
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Embodiment Construction

[0034] Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.

[0035] figure 1 It is a right side view of the electric bicycle 1 according to one embodiment of the present invention.

[0036] It should be noted that, in the following, from the front side ( figure 1 The left side in ) is used as a reference to define the direction of the electric bicycle 1 when the electric bicycle 1 is viewed. Thus, in figure 1 Among them, the left side of the paper is the front side, the right side of the paper is the back side, the front side of the paper is the right side, and the back side of the paper is the left side.

[0037] refer to figure 1 , in the electric bicycle 1, the front end (lower end) of the front fork 2 is installed with the hub unit 4 built in the motor 3, and the rim 6 of the wheel (front wheel) 5 on the front side is connected to the hub unit 4 by the spoke 7. In addition, in the electric bicycle 1 , a batt...

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PUM

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Abstract

Provided is an electric bicycle configured so that shock does not occur when pedaling is started in an inertia running state and the motor starts to rotationally drive a wheel. Pedaling force applied to pedals (11) is detected by a sensor (12). When the rotational speed of an output rotation unit (51) which is rotated by the rotor (29) of a motor (3) increases to the same speed as the rotational speed of the front wheel (5), a clutch (22) is engaged and transmits assisting drive force from the output rotation unit (51) to the front wheel (5). When the sensor (12) detects pedaling force greater than or equal to a predetermined magnitude, if the rotational speed of the output rotation unit (51) is higher than or equal to the rotational speed of the front wheel (5), a control unit (75) rotates the output rotation unit (51) at acceleration higher than or equal to predetermined first acceleration, and if the rotational speed of the output rotation unit (51) corresponds to an inertia running state in which the rotational speed of the output rotation unit (51) is lower than the rotational speed of the front wheel (5), the control unit (75) rotates the output rotation unit (51) at second acceleration lower than the first acceleration at least when the clutch (22) becomes engaged. Thus, the assisting drive force is smoothly transmitted from the output rotation unit (51) to the front wheel (5).

Description

technical field [0001] The present invention relates to electric bicycles. Background technique [0002] There is known an electric bicycle in which a motor is built into a hub of a front wheel or a rear wheel (see Patent Document 1). [0003] In the electric bicycle described in Patent Document 1, an electric motor is built into the hub of the front wheel. In this electric motor, a stator is fixed to a front fork of a bicycle, and an output rotary unit rotated by a rotor is connected to a front wheel via a one-way clutch. [0004] On a road surface such as a slope where it is a heavy burden for the passenger to pedal manually, the motor generates a driving force corresponding to the intensity (torque) of the passenger's pedaling to rotate the rotor. When the rotational speed (in other words, angular velocity) of the output rotating part rotated by the rotor exceeds the rotating speed of the front wheel (the wheel on which the motor is mounted), the one-way clutch is engag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62M6/65B62M6/45
CPCB62M6/50B62M6/45B62M6/55
Inventor 岛津将博
Owner SANYO ELECTRIC CO LTD
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