| 摘要 |
A speed-change lever device for a bicycle in which a boss of an operating lever is rotatably supported to a lever shaft, and in which a friction plate is supported to an eccentric portion of the lever shaft to give a resistance against rotation of the operating lever. An urging member is provided having a not-round through bore by which it is fitted onto the not-round portion of the lever shaft. A screw member is provided to engage with screw threads in the lever shaft forwardly or backwardly to adjust thereby a rotational resistance given to the lever through the urging member. The urging member includes an urging portion for urging the friction plate toward the boss of the operating lever through a forward screw-movement of the screw member during assembly. The friction plate has engaging segments which, when urged by the urging portion of the urging member during assembly, are elastically deformed to engage with the not-round portion of the lever shaft, whereby a frictional resistance between the boss of the operating lever and the friction plate prevent the urging member from rotating together with the operating lever. |
