A control system for a human-powered vehicle includes a suspension device, at least one detector, an electronic controller. The suspension device includes a first suspension and a second suspension. The at least one detector is configured to detect information related to at least two conditions of the human-powered vehicle. The conditions include an operating state of the suspension device, a power input to the human-powered vehicle, a torque of a power transmission component, and a rotating state of the power transmission component. The electronic controller is configured to selectively control the suspension device between a first operating state and a second operating state in accordance with a detection result obtained by the at least one detector.

A device includes a magnet and a magnetic field sensor configured to sense a magnetic field of the magnet. The magnet and the magnetic field sensor are arranged to be movable relative to each other. A relative movement between the magnet and the magnetic field sensor is based on a movement of a throttle controller of a vehicle. A power provided by a motor of the vehicle correlates to a position of the magnet relative to the magnetic field sensor as sensed by the magnetic field sensor.

A device includes a magnet and a magnetic field sensor configured to sense a magnetic field of the magnet. The magnet and the magnetic field sensor are arranged to be movable relative to each other. A relative movement between the magnet and the magnetic field sensor is based on a movement of a throttle controller of a vehicle. A power provided by a motor of the vehicle correlates to a position of the magnet relative to the magnetic field sensor as sensed by the magnetic field sensor.

Provided is an electric power-assist device which can be used to retrofit and convert an existing bicycle to a power assisted bicycle with ease, and enables proper power assist control in response to the pedaling force, without major modifications to the bicycle. The device comprises an electric motor 58 connected to a crankshaft 24 or a crankarm 28 of a bicycle 10; a rotational angle sensor 130 for detecting a crank rotational angle of the crankshaft; an acceleration sensor 134 for detecting an acceleration level in a traveling direction of the bicycle; and a control unit 150 for controlling the electric motor 58, wherein the control unit comprises: a pedaling force estimator 152 for estimating a pedaling force based on an acceleration level measured at a predetermined crank rotational angle; and a motor drive controller 158 for controlling the electric motor 58 based on the estimated pedaling force.

A transmission structure of electric clutchless motorcycle includes an electric motor, a variable speed gear set, a variable speed gear box and a gear position sensing unit. The arrangement of the gear position sensing unit is so configured that the transmission structure of electric clutchless motorcycle mechanism not only maintains the inertial energy recharge of the electric motor to increase the endurance of the vehicle, but also allows the driver to accurately control the speed control knob when switching gears, and furthermore can increase the automatic gear shift function of the electric gear shift design.

A human-powered vehicle control device for a human-powered vehicle includes an electronic controller configured to control a motor, which applies a propulsion force to a human-powered vehicle, in correspondence with a human driving force input to the human-powered vehicle. The electronic controller is configured to control the motor so as to increase an assist force produced by the motor for when an output of the motor is maximal upon determining a parameter related to at least one of a vehicle speed of the human-powered vehicle, an inclination angle of the human-powered vehicle, and a travel resistance of the human-powered vehicle has increased.

A rear derailleur of a bicycle includes a fixing portion connected to a frame of the bicycle, a linkage assembly pivotally connected between the fixing portion and the moving portion, a moving portion pivotally connected to the linkage assembly, a chain guide assembly connected to the moving portion, and a driving assembly including a clutch assembly, a motor, and a driving gear assembly connected to the clutch assembly. The clutch assembly is disposed between the fixing portion and the linkage assembly and includes a first clutch member and a second clutch member. When a relative rotational torque between the first clutch member and the second clutch member is greater than a predetermined resistance, the first clutch teeth and the second clutch teeth shift relatively. Thereby, the driving gear assembly or the output shaft of the motor could be prevented from damaging.

Provided is an electric power assist device for bicycles, which can achieve proper power assist control in response to the pedaling force without any complicated feature for detecting pedaling forces and any necessity of modification to a bicycle. The device comprises: a pedaling force estimator 154 configured to estimate a pedaling force put on each pedal of a bicycle based on a variation between average current levels I flowing in an electric motor 58 measured within a first crank rotational angle range A and a second crank rotational angle range B which is different from the first crank rotational angle range; and a crank rotational angle adjuster 152 configured to adjust the first crank rotational angle range A and the second crank rotational angle range B according to the gradient of a road on which the bicycle is traveling.

An accelerator position sensor unit capable of not only easily performing positioning of the accelerator position sensor unit with respect to a handlebar but also stably fixing the accelerator position sensor unit to the handlebar with a simple configuration. An accelerator position sensor unit 1 includes an accelerator position sensor main body 3 that detects a rotation angle of a throttle pipe 12 supported by a cylindrical handlebar 11 in a state of being rotatable around a central axis O11 of the handlebar 11 along an outer circumference surface 111 of the handlebar 11, and a sensor case 4 that houses the accelerator position sensor main body 3. The sensor case 4 includes an extending portion 53 extending along a direction of the central axis O11. The extending portion 53 is sandwiched between the handlebar 11 and a cover 7 that covers the accelerator position sensor unit 1.

An accelerator position sensor unit capable of not only easily performing positioning of the accelerator position sensor unit with respect to a handlebar but also stably fixing the accelerator position sensor unit to the handlebar with a simple configuration. An accelerator position sensor unit 1 includes an accelerator position sensor main body 3 that detects a rotation angle of a throttle pipe 12 supported by a cylindrical handlebar 11 in a state of being rotatable around a central axis O11 of the handlebar 11 along an outer circumference surface 111 of the handlebar 11, and a sensor case 4 that houses the accelerator position sensor main body 3. The sensor case 4 includes an extending portion 53 extending along a direction of the central axis O11. The extending portion 53 is sandwiched between the handlebar 11 and a cover 7 that covers the accelerator position sensor unit 1.