| 摘要 |
A plastic hub with an automatically adjusted core includes a hub main body and hub blades formed on the outer portion of the hub main body. The arch-shape cylinders formed at the ends of the hub blades are placed against the positioning rack of the plastic hub so that an effect of adjusting the position shift can be generated by the arch-shape surfaces, and the shift caused by the axle revolving can be adjusted by the hub blades as well as the hub core can be automatically adjusted.
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