Apparatus for adjusting a position of a bicycle derailleur
First Claim
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1. A computer-controlled bicycle transmission control apparatus for controlling the operation of an electrically-controlled front derailleur and an electrically-controlled rear derailleur, wherein the apparatus comprises:
- a control unit that provides a first signal that operates the front derailleur by a front gear shift distance defined as the distance from an origin front sprocket to a destination front sprocket and that provides a second signal that operates the rear derailleur by a rear gear shift distance defined as the distance from an origin rear sprocket to a destination rear sprocket;
wherein the control unit receives a condition signal that indicates a condition resulting from a gear shift operation of at least one of the front derailleur and the rear derailleur; and
an adjustment controller that moves the front derailleur by an adjustment distance less than the front gear shift distance in response to the condition signal resulting from a gear shift operation of the front derailleur and stops the front derailleur at the adjustment distance less than the front gear shift distance so that the front derailleur is maintained during riding in a position offset from the front gear shift distance, and that moves the front derailleur by an adjustment distance less than the front gear shift distance in response to the condition signal resulting from a gear shift operation of the rear derailleur and stops the front derailleur at the adjustment distance less than the front gear shift distance so that the front derailleur is maintained during riding in a position offset from the front gear shift distance.
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Abstract
A bicycle transmission control apparatus comprises a control unit that provides a first signal to operate a first derailleur a gear shift distance from a first origin sprocket to a first destination sprocket. The control unit receives a condition signal that indicates a condition resulting from at least one of the first derailleur and a second derailleur; and an adjustment controller moves the first derailleur an adjustment distance less than the gear shift distance in response to the condition signal.
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Citations
27 Claims
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1. A computer-controlled bicycle transmission control apparatus for controlling the operation of an electrically-controlled front derailleur and an electrically-controlled rear derailleur, wherein the apparatus comprises:
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a control unit that provides a first signal that operates the front derailleur by a front gear shift distance defined as the distance from an origin front sprocket to a destination front sprocket and that provides a second signal that operates the rear derailleur by a rear gear shift distance defined as the distance from an origin rear sprocket to a destination rear sprocket; wherein the control unit receives a condition signal that indicates a condition resulting from a gear shift operation of at least one of the front derailleur and the rear derailleur; and an adjustment controller that moves the front derailleur by an adjustment distance less than the front gear shift distance in response to the condition signal resulting from a gear shift operation of the front derailleur and stops the front derailleur at the adjustment distance less than the front gear shift distance so that the front derailleur is maintained during riding in a position offset from the front gear shift distance, and that moves the front derailleur by an adjustment distance less than the front gear shift distance in response to the condition signal resulting from a gear shift operation of the rear derailleur and stops the front derailleur at the adjustment distance less than the front gear shift distance so that the front derailleur is maintained during riding in a position offset from the front gear shift distance. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 22, 23, 24, 25, 26)
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21. A method for computer-controlling the operation of a front derailleur and a rear derailleur, wherein the method comprises the steps of:
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providing at least one of a first signal that operates the front derailleur by a front gear shift distance defined as the distance from an origin front sprocket to a destination front sprocket and a second signal that operates the rear derailleur by a rear gear shift distance defined as the distance from an origin rear sprocket to a destination rear sprocket; receiving, by a control unit, a condition signal that indicates a condition resulting from a gear shift operation of at least one of the front derailleur and the rear derailleur; moving the front derailleur by an adjustment distance less than the front gear shift distance in response to the condition signal resulting from the gear shift operation of the at least one of the front derailleur and the rear derailleur; and stopping the front derailleur at the adjustment distance less than the front gear shift distance so that the front derailleur is maintained during riding in a position offset from the front gear shift distance.
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27. A computer-controlled bicycle transmission control apparatus for controlling the operation of a front derailleur and a rear derailleur, wherein the apparatus comprises:
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a control unit that provides a first signal that operates the front derailleur by a front gear shift distance defined as the distance from an origin front sprocket to a destination front sprocket in response to receiving a front upshift request signal or a front downshift request signal and that provides a second signal that operates the rear derailleur by a rear gear shift distance defined as the distance from an origin rear sprocket to a destination rear sprocket in response to receiving a rear upshift request signal or a rear downshift request signal; wherein the control unit receives a condition signal that indicates a condition resulting from a gear shift operation of at least one of the front derailleur and the rear derailleur; and an adjustment controller that, in response to the condition signal resulting from the gear shift operation of the at least one of the front derailleur and the rear derailleur and after the control unit provides the first signal that operates the front derailleur by the front gear shift distance in response to receiving the front upshift request signal or the front downshift request signal or the second signal that operates the rear derailleur by the rear gear shift distance in response to receiving the rear upshift request signal or the rear downshift request signal, moves the front derailleur by an adjustment distance less than the front gear shift distance, and stops the front derailleur at the adjustment distance less than the front gear shift distance so that the front derailleur is maintained during riding between the first origin front sprocket and the destination front sprocket at a distance from the origin front sprocket less than the front gear shift distance until the control unit receives a subsequent front upshift request signal, a subsequent front downshift request signal, a subsequent rear upshift request signal, or a subsequent rear downshift request signal.
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Specification