| 摘要 |
A quick change chain ring arrangement for use on a bicycle crank assembly includes a chain ring adapter that is connected to and rotates with the crank assembly about the crank assembly rotational axis. A removable chain ring support removably engages with the chain ring adapter. The chain ring support has a minimum inside opening formed into the chain ring support that is larger than the maximum cross sectional area perpendicular to the longitudinal axis of the crank arms thereby allowing the chain ring support to be installed onto and removed from the crank assembly without requiring the removal of the crank arms or pedals from the crank assembly and without requiring the removal of the crank assembly from the bicycle frame. The chain ring support has a shape that allows the chain ring support to mate with the chain ring adapter so that torque may be transmitted between the chain ring adapter and the chain ring support about the crank assembly rotational axis without requiring the use of fasteners or other load bearing devices to transmit the torque between the chain ring adapter and the chain ring support. The quick change chain ring arrangement also includes a removable retaining device that retains the removable chain ring support engaged with the chain ring adapter.
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