Shifting system for human-powered vehicle
AssigneeShimano Inc.
InventorsNaoki Fujimoto, Takeshi Ueda, Tsuyoshi Fukumori
Life of this patent
Estimating the term…
Abstract
A shifting system for a human-powered vehicle comprises a controller. The controller is configured to receive a driving torque and a cadence of the human-powered vehicle from at least one sensor. The controller is configured to determine a permitted shift timing based on the driving torque and the cadence. The controller is further configured to control a shift mechanism to perform a gear shift during the permitted shift timing in accordance with a permitted cadence range and a first threshold of the driving torque.
Claims13
A shifting system for a human-powered vehicle, comprising:
- a controller configured to:
- receive a cadence of the human-powered vehicle from at least one sensor;
- and
- control a shift mechanism to perform a gear shift in accordance with a permitted cadence range by outputting a signal concerning at least one of an estimated travel distance of the shift mechanism and an estimated travel speed of the shift mechanism for performing the gear shift during a permitted shift timing, wherein the permitted shift timing includes a first timing interval, and the first timing interval has a first start and a first end.
A shifting system for a human-powered vehicle, comprising:
- a controller configured to:
- receive a cadence of the human-powered vehicle from at least one sensor;
- and
- control a shift mechanism to perform a gear shift in accordance with a permitted cadence range by outputting a signal concerning at least one of an estimated travel distance of the shift mechanism and an estimated travel speed of the shift mechanism for performing the gear shift, wherein
- the controller is configured to receive a driving torque of the human-powered vehicle from at least one sensor,
- the controller is configured to determine a permitted shift timing based on the driving torque and the cadence,
- the permitted shift timing includes a first timing interval that has a first start and a first end, and
- the controller is configured to control the shift mechanism to perform the gear shift by:
- calculating an estimated duration of time that is required for performing the gear shift based on at least one of the estimated travel distance and the estimated travel speed;
- determining that the gear shift can be commenced after the first start of the first timing interval and completed prior to the first end of the first timing interval;
- and
- outputting a command signal to the shift mechanism based on the determination result.
Dependencies are inferred from the claim text.