Title:
BICYCLE TRANSMISSION HUB
Document Type and Number:
WIPO Patent Application WO/2017/196003
Kind Code:
A1
Abstract:
A bicycle transmission hub according to the present invention comprises: a hub shaft to which a rotation force is input, the hub shaft having a plurality of first pawls arranged on the outer peripheral surface thereof; a transmission control means for controlling the first pawls to appear and disappear; a plurality of driving gears, each of which has a ratchet formed on the inner peripheral surface thereof to receive a rotation force transferred by the first pawls, the driving gears having a different number of teeth, the hub shaft extending through the center of each of the driving gears; a plurality of driven gears, which are engaged with the driving gears, respectively, have a different number of teeth, and rotate while being coupled to each other; an output wheel, which rotates while being coupled to a driving gear adjacent thereto among the driving gears and has a second pawl disposed on the outer peripheral surface thereof; and a hub shell, which has a wheel spoke connected thereto and has a ratchet formed on the inner peripheral surface thereof to receive a rotation force transferred by the second pawl.
Inventors:
KIM BOK SOUNG (KR)
KIM DO HWAN (KR)
KIM DO HWAN (KR)
Application Number:
PCT/KR2017/004367
Publication Date:
November 16, 2017
Filing Date:
April 25, 2017
Export Citation:
Assignee:
KIM BOK SOUNG (KR)
KIM DO HWAN (KR)
BYGEN CO LTD (KR)
KIM DO HWAN (KR)
BYGEN CO LTD (KR)
International Classes:
B62M11/06; B60B27/02; B62M11/16; B62M25/04
Foreign References:
| KR101260050B1 | 2013-05-06 | |||
| KR20080101927A | 2008-11-21 | |||
| KR100498888B1 | 2005-07-04 | |||
| KR20120006384A | 2012-01-18 | |||
| US20120305325A1 | 2012-12-06 |
Other References:
See also references of EP 3456620A4
Attorney, Agent or Firm:
SEWON PATENT LAW FIRM (KR)
Download PDF: