| 摘要 |
The present invention relates to an apparatus for shifting a transmission for bicycles, more particularly, an apparatus for shifting a transmission for bicycles for controlling a wire (201) connected to a transmission for bicycles. The apparatus is comprising: a fixing housing (100) installed on a handle bar of a bicycle and a guiding groove and a stopper means (110) are installed therein; a multistage wheel (200) in which a guiding pin rotating with a predetermined angle with inserted into the guiding groove and one-way ratchets (210) controlled by the stopper means (110) are formed; a rotating portion (300) which is installed on the handle bar of a bicycle rotatably; a transferring portion (400) which is transferring the rotational force of the rotating portion (300) to the multistage wheel (200) and a releasing means (410) for releasing the stopper means (110) temporarily is installed therein; and a spring (500) providing a restoring force to the multistage wheel (200) and the rotating portion (300). |
