Method and apparatus for controlling a bicycle transmission
First Claim
1. An apparatus for controlling upshifting and downshifting of a bicycle transmission, wherein the apparatus comprises:
- a running condition detecting mechanism comprising a wheel speed detector that detects a running condition of the bicycle;
wherein the wheel speed detector comprises an alternating current generator that rotates with a wheel of the bicycle;
a threshold value setting mechanism that sets at least one of an upshift threshold value and a downshift threshold value for the running condition; and
a control mechanism that provides a signal that commands at least one of an upshift and a downshift when the running condition is beyond the corresponding one of the upshift threshold value and the downshift threshold value for a first predetermined time interval.
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Accused Products
Abstract
An apparatus for controlling upshifting and downshifting of a bicycle transmission includes a running condition detecting mechanism that detects a running condition of the bicycle, a threshold value setting mechanism that sets at least one of an upshift threshold value and a downshift threshold value for the running condition, and a control mechanism. The control mechanism provides a signal that commands at least one of an upshift and a downshift when the running condition is beyond the corresponding upshift threshold value and downshift threshold value for a first predetermined time interval. In another embodiment, the control mechanism provides a signal that commands at least one of an upshift and a downshift when the running condition is beyond the corresponding one of the upshift threshold value and the downshift threshold value at both a first detection and a second detection, wherein the second detection occurs after the first detection. The control mechanism provides the signal after the second detection and not in a time interval between the first detection and the second detection.
20 Citations
8 Claims
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1. An apparatus for controlling upshifting and downshifting of a bicycle transmission, wherein the apparatus comprises:
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a running condition detecting mechanism comprising a wheel speed detector that detects a running condition of the bicycle;
wherein the wheel speed detector comprises an alternating current generator that rotates with a wheel of the bicycle;
a threshold value setting mechanism that sets at least one of an upshift threshold value and a downshift threshold value for the running condition; and
a control mechanism that provides a signal that commands at least one of an upshift and a downshift when the running condition is beyond the corresponding one of the upshift threshold value and the downshift threshold value for a first predetermined time interval. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification