Structure of bicycle chain transmission

Details Structure of bicycle chain transmission Structure of bicycle chain transmission

B - Operations, Transporting

62

M

74/33

B62M 9/08 (2006.01)

Patent

CA 2029845

STRUCTURE OF BICYCLE CHAIN TRANSMISSION ABSTRACT: A bicycle chain transmission, comprising a pedal link adjustably fastened in a holder plate mounted on the outer side of a chain wheel and connected with a side projection of a bearing block which is mounted on an eccentric sleeve at the bottom of a bottom bracket bearing axle of a bicycle. The eccentric motion of the eccentric sleeve forces the bearing block to rotate eccentrically so as to squeeze the pedal link to adjust the length of its arm of force according to its angle position relative to the chain wheel, so that reduced labor consumption in pedaling can be achieved.

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