The invention discloses a quick-detaching structure of an inner transmission fixing shaft universal for a non-chain transmission bicycle and a chain transmission bicycle. An inner transmission is fixedly assembled on the inner transmission fixing shaft. A hub capable of hiding the inner transmission and being positioned and rotated is arranged outside the inner transmission. The two ends of a shaft body of the inner transmission fixing shaft are provided with preset-length external threads so that fixing nuts for fixing the whole inner transmission can be assembled. The outer portion, between the external threads at the two ends, of the fixing shaft is provided with at least one inwards-concave type reinforcing rib concave inwards or an outwards-protruding type reinforcing rib protruding outwards. A penetrating passageway is arranged at the axis of the inner transmission fixing shaft. Through the penetrating of the inner transmission fixing shaft with the penetrating passageway at the axis and a quick-detaching body and the assembling of adjusting nuts, the quick-detaching structure of the inner transmission fixing shaft universal for the non-chain transmission bicycle and the chain transmission bicycle is obtained, and the effects of quickly detaching and assembling the combination of the inner transmission and the hub and a frame through the single inner transmission fixing shaft are achieved.
Quick-detaching structure of inner transmission fixing shaft for bicycle
2015-10-14
Patent
Electronic Resource
English
IPC: | B62M RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES , Antrieb von Radfahrzeugen oder Schlitten durch den Fahrer |