Rear gearshift mechanism for coaxial installation
AssigneeSRAM Deutschland GmbH
InventorHenrik Braedt
Life of this patent
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Abstract
A bicycle gearshift mechanism has a base element, a pivot mechanism, a movable element, and a chain guide arrangement. The pivot mechanism connects the base element to the movable element. The chain guide arrangement is connected, rotatably about a rotary axle, to the movable element. The base element comprises a first attachment end, which is coaxial with respect to the rear-wheel axle or axis, and a second attachment end for coupling to the pivot mechanism.
Claims19
A rear gearshift mechanism for coaxial installation on a rear-wheel axis of a bicycle, comprising:
- a base element including a receptacle having a longitudinal axis extending therethrough, the longitudinal axis being orthogonal the rear-wheel axis,
- a linkage mechanism,
- a movable element, and
- a chain guide arrangement,
- wherein the linkage mechanism connects the base element to the movable element, and the chain guide arrangement is connected rotatably about a rotary axis, to the movable element, and wherein the base element comprises a first attachment end for coaxial installation on the rear-wheel axis and a second attachment end for coupling to the linkage mechanism, the receptacle located at the second attachment end for connecting the base element to the linkage mechanism, and
- wherein the base element, in particular a hub stop surface of an arm, abuts in an operationally ready state axially against a hub end cap, and
- in an installed state, the rear-wheel axis and the longitudinal axis are fixed relative to each other.
A rear gearshift mechanism for coaxial installation on a rear-wheel axis of a bicycle, comprising:
- a base element including a receptacle having a longitudinal axis extending therethrough, the longitudinal axis being orthogonal the rear-wheel axis,
- a linkage mechanism,
- a movable element, and
- a chain guide arrangement,
- wherein the linkage mechanism connects the base element to the movable element, and the chain guide arrangement is connected rotatably about a rotary axis, to the movable element, and wherein the base element comprises a first attachment end for coaxial installation on the rear-wheel axis and a second attachment end for coupling to the linkage mechanism, the receptacle located at the second attachment end for connecting the base element to the linkage mechanism, and
- wherein the linkage mechanism comprises at least one pivot axle which is oriented orthogonally with respect to the rear-wheel axis, and
- in an installed state, the rear-wheel axis and the longitudinal axis are fixed relative to each other.
A rear gearshift mechanism for coaxial installation on a rear-wheel axis, having:
- a base element including a receptacle having a longitudinal axis extending therethrough, the longitudinal axis being orthogonal the rear-wheel axis;
- a linkage mechanism;
- a movable element;
- and
- a chain guide arrangement,
- wherein the linkage mechanism connects the base element to the movable element, and the chain guide arrangement is connected, rotatably about a rotary axis, to the movable element, and wherein the base element comprises a first attachment end for coaxial installation on the rear-wheel axis and a second attachment end for coupling to the linkage mechanism, the receptacle located at the second attachment end for connecting the base element to the linkage mechanism,
- wherein in that the first attachment end of the base element has a first centring opening for the purposes of directly centring the base element on a thru axle, and
- in an installed state, the rear-wheel axis and the longitudinal axis are fixed relative to each other.
A rear-wheel axle arrangement for a bicycle, comprising:
- a hub arrangement having a rear-wheel hub which is rotatable about a rear-wheel axis, having a hollow hub axle and having a hub bearing arrangement for the rotatable mounting of the rear-wheel hub relative to the hub axle,
- a hollow thru axle which, for the purposes of fixing the hub arrangement on a bicycle frame, is designed such that it can be inserted into the hollow hub axle and screwed into a rear gearshift mechanism,
- wherein in that the hollow thru axle has, at least in the region of the hub bearing, a wall thickness which is dimensioned to be at least as great as a wall thickness of the hub axle.
Dependencies are inferred from the claim text.