Title:
TRANSMISSION FOR BICYCLE
Document Type and Number:
WIPO Patent Application WO/2007/091414
Kind Code:
A1
Abstract:
A bicycle transmission of an internally mounted type, the transmission having
a simple structure and capable of being universally installed on various bicycles.
A rotating claw body (1) is fitted on a main shaft (51). Main gears (2, 3, 4, 5) corresponding
to the number of shifts are arranged side by side on the outer periphery of the rotating
claw body (1). An auxiliary shaft (6) is placed in parallel with the main shaft,
and auxiliary gears (7, 8, 9, 10) individually functioning in operative association
with the main gears at a predetermined speed ratio are co-rotatably supported
by the auxiliary shaft (6). Ratchet claws (15, 16, 17, 18) individually corresponding
to the main gears are arranged on the rotating claw body (1). Ratchet teeth (19)
with which the ratchet claws engage are formed on the inner peripheral side of
the main gears. When a switchover member (20) for causing the ratchet claws to
project from and retract into the outer peripheral surface of the rotating claw
body (1) is operated, a ratchet claw (15, 16, 17, 18) is engaged with and disengaged
from the ratchet teeth (19) to switchover between the main gears (2, 3, 4, 5) that
transmit drive power via auxiliary gears (7, 8, 9, 10). In this way, the speed ratio
of rotation of the input side and output side is changed to shift gears.
More Like This:
| WO/2012/077538 | ELECTRICALLY ASSISTED BICYCLE AND ELECTRIC TWO-WHEELED VEHICLE |
| WO/1999/020918 | CONTINUOUSLY VARIABLE TRANSMISSION |
| JP3142250 | BICYCLE ROTATION COMPONENT |
Inventors:
FUJIWARA HISAO (JP)
Application Number:
PCT/JP2007/050760
Publication Date:
August 16, 2007
Filing Date:
January 19, 2007
Export Citation:
Assignee:
FUJIWARA WHEEL INC (JP)
FUJIWARA HISAO (JP)
FUJIWARA HISAO (JP)
International Classes:
B62M11/16; F16H3/08; F16H9/24
Foreign References:
| JP3065927U | 2000-02-08 | |||
| JP2599596B2 | 1997-04-09 | |||
| JP3423756B2 | 2003-07-07 | |||
| JPH0258150B2 | 1990-12-06 |
Other References:
See also references of EP 1982913A4
Attorney, Agent or Firm:
KAMADA, Bunji et al. (Nipponbashi 1-chome Chuo-ku, Osaka-sh, Osaka 73, JP)
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