Bicycle hub assembly
AssigneeShimano Inc.
InventorsMitsuru Kamiya, Tetsuya Hino
Life of this patent
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Abstract
A multi-speed internal bicycle hub transmission assembly includes a hub axle, a driver, a hub shell, a power transmission mechanism, a pawl and a pawl retracting mechanism. The driver is rotatably supported to the hub axle. The hub shell is rotatably supported to the hub axle. The power transmission mechanism is disposed between the driver and the hub shell for transmitting rotational power from the driver to the hub shell through at least a first power transmission path and a second power transmission path. The pawl is configured to transfer torque between the driver and the hub shell with torque being transferred along the first power transmission path. The pawl retracting member is configured to restrict movement of the pawl with torque transmitted along the second power transmission path.
Claims4
A multi-speed internal bicycle hub transmission assembly comprising:
- a hub axle;
- a driver rotatably supported to the hub axle;
- a hub shell rotatably supported to the hub axle;
- and
- a power transmission mechanism disposed between the driver and the hub shell for communicating rotational power from the driver to the hub shell through at least a first power transmission path and a second power transmission path;
- a pawl configured to transfer torque between the driver and the hub shell with torque being transferred along the first power transmission path;
- and
- a pawl retracting member configured to restrict movement of the pawl with torque transmitted through the second power transmission path, the pawl retracting member including a slide spring configured to urge the pawl retracting member into engagement with the pawl with torque transmitted through the second power transmission path.
Dependencies are inferred from the claim text.