Title:
BIDIRECTIONAL TRANSMISSION DEVICE FOR BICYCLE
Document Type and Number:
WIPO Patent Application WO/2020/244052
Kind Code:
A1
Abstract:
A bidirectional transmission device for a bicycle, which comprises a large sprocket, a frame, an extended circular chain, a small sprocket I, a small sprocket II, a guide wheel, a ratchet device I and a ratchet device II, wherein the large sprocket rotates around a shaft on the frame, a segment of the extended circular chain is connected to the large sprocket and the top of the small sprocket I, a segment thereof is connected to the bottom of the large sprocket and the top of the small sprocket II, bypasses the small sprocket I and the small sprocket II and then is connected to the guide wheel, respectively, when the large sprocket rotates clockwise, it drives the small sprocket I to rotate clockwise, and the small sprocket I drives a rear wheel shaft to rotate forward through the ratchet device I, at the moment, the small sprocket II rotates counterclockwise and the ratchet device II rotates idly, when the large sprocket rotates counterclockwise, it drives the small sprocket II to rotate clockwise, and the small sprocket II drives the rear wheel shaft to rotate clockwise through the ratchet device, at the moment, the small sprocket I rotates counterclockwise and the ratchet device rotates idly, so that the rear wheel shaft rotates in one direction all the time.
Inventors:
OU XIAOHU (CN)
Application Number:
PCT/CN2019/100118
Publication Date:
December 10, 2020
Filing Date:
August 10, 2019
Export Citation:
Assignee:
OU XIAOHU (CN)
International Classes:
B62M9/00; B62M9/04; F16H7/02
Foreign References:
| CN2055804U | 1990-04-11 | |||
| CN2151310Y | 1993-12-29 | |||
| US4206660A | 1980-06-10 | |||
| CN203023404U | 2013-06-26 | |||
| CN101412429A | 2009-04-22 | |||
| AU3646200A | 2000-11-30 |
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