| 摘要 |
<p>The present invention provides a novel anti-detachment chainwheel having forced recessed face at chain tooth root portion, in which a chain roller (110) sleeved on a chain connecting pivot shaft (109) can be tightened engaged at a forced recessed face at chain tooth root portion (104) while the chainwheel being driven by a chain, thereby improving the shortage of the chain being easily detached from the chainwheel.</p> |
