| 摘要 |
A bicycle dynamo hub axle assembly that includes an axle having opposite ends, a smaller diameter portion located at one of said opposite ends, and a larger diameter portion, an electricity generating device disposed on the larger diameter portion of the axle, a bearing race disposed on the larger diameter portion, an electric wire extending from the electricity generating device, through one of the grooves and through the bearing race, a spacer disposed on the larger diameter portion, and a lock nut disposed on the smaller diameter portion for securing the bearing race and the spacer in position. The smaller diameter portion has a smaller diameter than the larger diameter portion and the larger diameter portion has at least two grooves defined therein. The larger diameter portion also includes a stepped portion extending radially outwardly therefrom. The spacer has an opening defined therethrough, and has at least one tongue extending inwardly into the opening. The tongue is received in one of the grooves, thereby preventing the spacer from rotating.
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