Shimano Inc.

Atsushi Iizuka

Nobukatsu Hara

Takeshi Takachi

Tatsuya Kawakami

A bicycle derailleur comprises a base member adapted to be mounted to a bicycle; a movable member movably coupled to the base member; a chain guide coupled to the movable member through a pivot shaft for rotating around an axis (X); a spring mounted around the axis (X), wherein the spring is configured to bias the chain guide in a selected rotational direction; and a resistance applying unit disposed on the pivot shaft. The resistance applying unit includes a friction unit, a one-way transmission unit, and an adjusting unit. The friction unit includes a plurality of first engaging members and at least one second engaging member, wherein the plurality of first engaging members are axially slidable with respect to the pivot shaft. The adjusting unit adjusts an amount of friction between the plurality of first engaging members and the at least one second engaging member.

Bicycle rear derailleur with a motion resisting structure

A bicycle derailleur comprises a base member adapted to be mounted to a bicycle; a movable member movably coupled to the base member; a chain guide coupled to the movable member through a pivot shaft, wherein the chain guide is coupled for rotation around a rotational axis (X); a biasing element that biases the chain guide in a selected rotational direction around the rotational axis (X); and a resistance applying unit that applies a resistance to rotational movement of the chain guide in a direction opposite the selected rotational direction. The resistance applying unit includes a roller clutch disposed between the movable member and the pivot shaft, wherein the roller clutch includes a roller; an intermediate member disposed between the roller and the pivot shaft, wherein the intermediate member moves relative to the pivot shaft; and a first friction member including a first contact area that is substantially perpendicular to the rotational axis (X), wherein the first friction member communicates rotational force between the pivot shaft and the intermediate member.

A bicycle derailleur comprises a base member adapted to be mounted to a bicycle, a movable member movably coupled to the base member, and a chain guide coupled to the movable member. The chain guide is coupled for rotation around a rotational axis (X), and a biasing element biases the chain guide in a selected rotational direction. A resistance applying unit applies a resistance to rotational movement of the chain guide in a direction opposite the selected rotational direction, and an adjusting unit adjusts an amount of resistance applied by the resistance applying unit.

A bicycle component positioning device includes a fixed member, an operating member and a positioning mechanism. The operating member has an input portion and an output portion. The positioning mechanism is operatively disposed between the operating member and the fixed member. The positioning mechanism includes a positioning member that is movable between a first position in which the positioning member is engaged with the fixed member and a second position in which the positioning member is disengaged from the fixed member. The positioning member is held in engagement with the fixed member in the first position by the input portion when the input portion is in an operating position. The positioning member is movable from the first position to the second position upon movement of the input portion from at least one of the operating positions.

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Osaka, Japan

Atsushi Iizuka