Title:
ELECTRIC-ASSIST BICYCLE
Document Type and Number:
WIPO Patent Application WO/2017/010077
Kind Code:
A1
Abstract:
A drive unit (20) positioned in an intermediate location between a front wheel and a rear wheel is provided with: a resultant force vehicle (29) capable of rotating as a result of the resultant force obtained by synthesizing a human-powered drive force and an auxiliary drive force; a drive sprocket (13) to which the rotations of the resultant force vehicle (29) are transmitted; and a shifting mechanism that transmits drive force to the resultant force vehicle and has a plurality of selectable gears, the gear ratio of which differs. The shifting mechanism has a plurality of gears and a switch movement unit (62) that moves according to the selected gear. In addition, the drive unit (20) is provided with an electric-power switching device that has a gear-switching motor that functions as a gear-switching drive source for producing drive force that moves the switch movement unit (62).
Inventors:
KAWAKAMI MASAFUMI
FUJII NAOKI
NISHIMORI MASATO
FUJII NAOKI
NISHIMORI MASATO
Application Number:
PCT/JP2016/003268
Publication Date:
January 19, 2017
Filing Date:
July 11, 2016
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
B62M6/55; B62M11/06; B62M25/08; F16D41/24; F16H63/30
Domestic Patent References:
| WO2014172422A1 | 2014-10-23 |
Foreign References:
| JP5523636B1 | 2014-06-18 | |||
| JPH11240481A | 1999-09-07 |
Other References:
See also references of EP 3323703A4
Attorney, Agent or Firm:
KAMATA, Kenji et al. (JP)
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