| 摘要 |
A rear hub assembly for bicycle includes a ratchet wheel and a hub body assembled with the ratchet wheel. The hub body has a first hub plate disposed on one end thereof. The first hub plate has a plurality of protrusions formed on an outer lateral surface thereof. A dodging portion is formed between every two adjacent protrusions. A plurality of recesses are defined in an inner lateral surface of the first hub plate. A plane portion is formed between every two adjacent recesses. The first hub plate has a plurality of bores defined therein and located on each protrusion and dodging portion. A first and a second stepped level difference are respectively defined between every recess and plane portion; and between every protrusion and dodging portion. A plurality of spokes engaged with the bores respectively and buckled the first hub plate. |
