Disclosed is a power-output wireless torque detection mechanism, which includes an input assembly and an output assembly that is driven by the input assembly separately mounted on a fixed body. A wireless detection device is arranged between the input assembly and the output assembly, so that the wireless detection device is operable to detect a rotating torque value and a rotating speed value that are transmittable in a wireless manner. As such, a modularized arrangement is formed, which exhibits bettered universality and enhances accuracy of torque detection and also improves stabilization and correctness of signal transmission to allow a subsequent input of an assisting power to be conducted in a more timely and more accurate manner and to achieve an effect of easy assembling and servicing, and also to reduce an overall cost.

A self-powered apparatus is used for various kinds of cycling and indoor exercise devices. The self-powered apparatus includes a pedal unit, a spindle, a generator and an energy storage element. The pedal unit includes an inner surface to form an accommodating space therein. The spindle is accommodated in the accommodating space. The generator includes a stator and a rotor. The stator is disposed on the spindle, the rotor is disposed on the inner surface of the pedal unit, and the rotor surrounds the stator correspondingly and is non-contact with the stator. The energy storage element is electrically coupled to the generator. When the pedal unit is being pedaled to rotate by a rider, the stator is fixed on the spindle, the rotor rotates relatively to the stator and along with the pedal unit, and a power is generated by the generator to charge the energy storage element.

A torque measurement system includes an outer rotational shaft and an inner rotational shaft both configured to rotate about a rotational axis. A rotation of the inner rotational shaft causes a rotation of the outer rotational shaft via a coupling structure. At least one torque applied to the inner rotational shaft is translated into a first torque-dependent angular shift between the shafts. A first metamaterial track is coupled to the outer rotational shaft and configured to co-rotate with the outer rotational shaft. A second metamaterial track is coupled to the inner rotational shaft and configured to co-rotate with the inner rotational shaft. The tracks are configured to convert an electro-magnetic transmit signal into a first electro-magnetic receive signal based on the first torque-dependent angular shift and a receiver is configured to receive the electro-magnetic receive signal and measure the at least one torque based on the electro-magnetic receive signal.

A process for manufacturing a bicycle component and a bicycle component manufactured by the process. The process includes protecting a printed circuit board, inserting the protected printed circuit board into the mold cavity, inserting a composite material into the mold cavity so it is around and in contact with the circuit board, and subjecting the mold cavity to a temperature and pressure profile until the composite material hardens.

An axle assembly for a bicycle includes an axle having an inner wall extending along a length of the axle between a first end and a second end of the axle. The inner wall at least partially defines a first volume and a second volume within the axle. The first volume has a first diameter, and the second volume has a second diameter that is greater than the first diameter. The first volume is closer than the second volume to the first end of the axle. The axle assembly also includes a sensor attached to the inner wall of the axle within the second volume of the axle.

A measuring device with a crankshaft and a load cell for determining a radial force acting on the crankshaft having a receiving sleeve for receiving a bearing ring and a fastening ring for attaching the load cell in a transmission housing. Axial support areas are provided on the fastening ring for axially supporting the outer ring of the first bearing. Moreover, measuring regions for receiving radial forces of the receiving sleeve are provided which connect the receiving sleeve with the fastening ring. Strain sensors are attached to at least two of the measuring regions. An evaluation electronics is connected to the strain sensors.

An axle assembly for a bicycle includes an axle having an inner wall extending along a length of the axle between a first end and a second end of the axle. The inner wall at least partially defines a first volume and a second volume within the axle. The first volume has a first diameter, and the second volume has a second diameter that is greater than the first diameter. The first volume is closer than the second volume to the first end of the axle. The axle assembly also includes a sensor attached to the inner wall of the axle within the second volume of the axle.

A crank spindle set-up for a vehicle. The set-up includes a crank spindle for receiving a force/torque from pedaling using crank arms attached to ends of the crank spindle; an output shaft for receiving a force and/or a torque from the crank spindle; a mechanical coupling having a tap between the ends of the crank spindle, for transmitting force/torque from the crank spindle to the output shaft; a first magnetic region on/in the output shaft for generating and outputting a first magnetic field that is a function of the state of mechanical stress of the output shaft; a second magnetic region on/in the crank spindle at an axial distance from the tap, for generating and outputting a second magnetic field that is a function of the state of mechanical stress of the crank spindle; and a sensor set-up for detecting a magnetic field outputted by the crank spindle set-up.

A human-powered vehicle control device is provided for suitably controlling a rotation state of a wheel of a human-powered vehicle. The human-powered vehicle control device includes a first detector and an electronic controller. The first detector is configured to detect information related to a driving force of the wheel of the human-powered vehicle on a road surface. The electronic controller is configured to change an operation state of a suspension device of the human-powered vehicle in response to a detection result of the first detector.

A human-powered vehicle control device is provided for suitably controlling a rotation state of a wheel of a human-powered vehicle. The human-powered vehicle control device includes a first detector and an electronic controller. The first detector is configured to detect information related to a driving force of the wheel of the human-powered vehicle on a road surface. The electronic controller is configured to change an operation state of a suspension device of the human-powered vehicle in response to a detection result of the first detector.