| 摘要 |
A bicycle rear derailleur includes a bracket, a base member, a chain guide, a coupling mechanism and a support shaft. The bracket is arranged and configur ed for mounting to a bicycle frame. The bracket has a first mounting portion and a second mounting portion. The first mounting portion is formed with an open recess configured to at least partially receive a wheel axle. The base member is coupled to the second mounting portion of the bracket. The coupling mechanism is couple d between the base member and the chain guide so that the chain guide moves relative to the base member. The support shaft is configured to mount the base member to the bicycle frame at a location spaced apart from the open recess.
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