Apex Juris, pllc.
Connecting device for chainring of bicycle
A connecting device for a chainring of a bicycle is disclosed, including a connecting disc, a shaft, and a crank. The connecting disc is adapted to be engaged with a chainring, and has an axial bore, a bulging portion bulging from a central portion of the connecting disc, and a surrounding portion, which is flat, and surrounds an outer periphery of the bulging portion. The shaft passes through the axial bore to be fixedly engaged with the connecting disc. The shaft has a connecting end. The crank has a connecting end engaged with the connecting end of the shaft, and a bearing end adapted to bear an external force to make the crank rotate around the shaft. Whereby, the amount of materials used to make the connecting device is decreased. At the same time, the manufacturing cost, the size, and the weight of the connecting device are all reduced.
GLORY PRECISION INDUSTRY CO., LTD.
F F B F B B B
F16D F16D B62M F16H B62M B62M B62M
inventional inventional additional inventional inventional inventional inventional
Yu-Syong Yuan-Cheng Chung-Yi Sheng-Cian Chung-Cheng
Chen Chiang Chen Li Chen