| 摘要 |
<p>The present invention relates to a connecting bolt for a bicycle which has a bicycle wheel frame having a pair of connecting portions coupled to a hub on both ends of the hub in the center of a wheel, which is penetrated and inserted into the connection portions and the hub. The connecting bolt comprises: a rotation shaft unit inserted and penetrated into a cutting portion for connecting a bolt arranged in the connecting portions and the hub, wherein a screw thread is formed; a fixing unit arranged in an end portion of the rotation shaft unit; a protrusion portion capable of being inserted into a connecting hole arranged in the connecting portions in one surface of the fixing unit coupled to the rotation shaft unit; and a bolt head formed to protrude in the other surface of the fixing unit. Therefore, according to a preferred embodiment of the present invention, as a wheel of a bicycle is assembled using the connecting bolt for a bicycle, the protrusion portion of the fixing unit is fixedly inserted into a connecting hole of the connecting portions of the bicycle wheel frame, thereby assembling and removing a bicycle wheel only by connecting a but to a screw thread of the connecting bolt penetrating the connecting portions. Moreover, according to the connecting bolt for a bicycle of a preferred embodiment of the present invention, after assembling the connecting bolt, even if a nut connected to the connecting bolt comes untied by vibration or the like, the protrusion portion is inserted into the connecting portions for a wheel not to easily come off.</p> |
