Shimano Inc.

Toshinari Ooishi

Sota Yamaguchi

Koujirou Morii

Kazuhiro Fujii

Mao Kuroda

Hiroshi Tachibana

Taketoshi Sato

Naohiko Yamada

A method is performed for controlling a human-powered vehicle. The method includes calculating a first movement amount of the human-powered vehicle on a road from at least one of a rotational speed of a wheel of the human-powered vehicle and a rotational amount of the wheel. The method further includes calculating a second movement distance in an advancing direction of the human-powered vehicle and a horizontal direction from the first movement distance and a pitch angle of the human-powered vehicle and calculating a third movement distance related to movement in the advancing direction of the human-powered vehicle and a vertical direction from the first movement distance and the pitch angle. The method further includes predicting a terrain of the road from the second movement distance and the third movement distance.

Method for controlling human-powered vehicle and control device for human-powered vehicle

A control device is provided for a human-powered vehicle that includes a suspension and an operation detector detecting a first parameter correlated to a predetermined operation performed by a rider on the human-powered vehicle. The operation detector includes an acceleration sensor provided on at least one of a wheel axle of the human-powered vehicle and a portion of the human-powered vehicle closer to the wheel axle than a moving portion of the suspension. The first parameter includes acceleration in a fore-aft direction of the human-powered vehicle. The control device includes an electronic controller. The electronic controller is configured to determine the predetermined operation based on the acceleration in the fore-aft direction. The predetermined operation includes at least one of a first operation in which the rider pushes a handlebar of the human-powered vehicle and a second operation in which the rider pulls the handlebar.

Control device for human-powered vehicle

A bicycle sprocket comprises a sprocket body and sprocket teeth. The sprocket teeth include at least one first tooth. The at least one first tooth has a first maximum chain-engaging width, a first tooth center plane, a first projection, and a second projection. The first maximum chain-engaging width is defined in an axial direction parallel to a rotational center axis. The first tooth center plane is defined to bisect the first maximum chain-engaging width in the axial direction. The first projection has a first maximum axial length defined from the first tooth center plane in the axial direction. The second projection has a second maximum axial length defined from the first tooth center plane in the axial direction. The second maximum axial length is different from the first maximum axial length.

Bicycle sprocket

A bicycle sprocket comprises a sprocket body and sprocket teeth. The sprocket teeth include at least one first tooth and at least one second tooth. The at least one first tooth has a driving surface, a non-driving surface, a first maximum chain-engaging width, a first tooth center plane, and a first chain-facing surface. The first tooth center plane is defined to bisect the first maximum chain-engaging width in the axial direction. The first chain-facing surface is provided between the driving surface and the non-driving surface in a circumferential direction and is inclined with respect to the first tooth center plane in the circumferential direction. The at least one second tooth has a second maximum chain-engaging width defined in in the axial direction. The first maximum chain-engaging width is larger than the second maximum chain-engaging width.

A bicycle shifting control apparatus comprises a transmission controller configured to control a guide actuator of a derailleur to move a chain guide of the derailleur between a plurality of shift positions in response to an input shifting signal. The transmission controller is configured to control, in a shifting operation of the chain guide between adjacent two shift positions of the plurality of shift positions, the guide actuator to temporarily decelerate the chain guide at a deceleration position defined between the adjacent two shift positions so that the bicycle chain engages with and/or disengages from one of the sprockets having a shift assist structure prior to completion of the shifting operation of the chain guide.

Growing community of inventors

Sakai, Japan

Toshinari Ooishi