An operating device includes a magnetic disk capable of rotational motion around a rotation axis, a first yoke located on one side and a second yoke located on an other side across the magnetic disk, a coil disposed to overlap the magnetic disk when viewed in a direction along a direction in which the rotation axis extends, a magnetic viscous fluid filled between the magnetic disk and each of the first yoke and the second yoke, a magnetic measurement portion for measuring magnetism caused by a magnetic field using the magnetic viscous fluid, the magnetic disk, the first yoke, and the second yoke as a magnetic path, and a control unit configured to acquire a measured value from the magnetic measurement portion and control a magnetic field that is generated by the coil based on the measured value to change a viscosity of the magnetic viscous fluid.

A clutch includes balls, an axle, a socket and a cylinder. The axle includes a circular section formed with alternate cavities and ridges. The socket includes a circular bore for receiving the circular section of the axle and apertures for receiving the balls. The cylinder includes an annular recess made in an internal face. The socket is movable in the cylinder between two positions. When the socket is the first position, the internal face of the cylinder abuts the external portions of balls to engage the internal portions of the balls with the ridges to cause the axle to rotate the socket via the balls. When the socket is in the second position, the annular recess receives the external portions of the balls to allow disengagement of the internal portions of balls from the ridges to allow the axle to rotate relative to the socket.

A magnetic coupling assembly for coupling of a first rotary shaft and a second rotary shaft. The magnetic coupling assembly includes a first and second rotary hub, a sleeve, coaxial with the first rotary hub and arranged to be rotatable with respect to the first rotary hub, a first and second displacement element threadingly connected to the sleeve, and a first and a second rotatable inductor rotor arranged to co-rotate with the rotation of the first rotary hub. The first and second rotatable inductor rotors are connected to the first and second displacement element, respectively, and rotatable central magnet rotor. The sleeve includes threaded outer surfaces of opposite threading engaged by the first and second displacement elements so as to displace the first and second displacement elements in opposite directions.

A magnetic coupling assembly for coupling of a first rotary shaft and a second rotary shaft. The magnetic coupling assembly includes a first and second rotary hub, a sleeve, coaxial with the first rotary hub and arranged to be rotatable with respect to the first rotary hub, a first and second displacement element threadingly connected to the sleeve, and a first and a second rotatable inductor rotor arranged to co-rotate with the rotation of the first rotary hub. The first and second rotatable inductor rotors are connected to the first and second displacement element, respectively, and rotatable central magnet rotor. The sleeve includes threaded outer surfaces of opposite threading engaged by the first and second displacement elements so as to displace the first and second displacement elements in opposite directions.

The electronic IWE actuator includes an electric motor, a worm gear connected to the electric motor, a ball ramp including a worm wheel configured to engage with the worm gear, a clutch ring configured to engage with a wheel hub of the vehicle, and a shift fork configured to engage with the clutch ring and the ball ramp and move linearly in a direction along an axis of the wheel hub in response to a rotation of the ball ramp. The clutch ring is configured to engage with the wheel hub in response to a rotation of the worm gear in a first direction, and disengage from the wheel hub in response to a rotation of the worm gear in a second direction that is opposite to the first direction.

The electronic IWE actuator includes an electric motor, a worm gear connected to the electric motor, a ball ramp including a worm wheel configured to engage with the worm gear, a clutch ring configured to engage with a wheel hub of the vehicle, and a shift fork configured to engage with the clutch ring and the ball ramp and move linearly in a direction along an axis of the wheel hub in response to a rotation of the ball ramp. The clutch ring is configured to engage with the wheel hub in response to a rotation of the worm gear in a first direction, and disengage from the wheel hub in response to a rotation of the worm gear in a second direction that is opposite to the first direction.

The present invention relates to a freewheel hub for a bicycle, comprising a freewheel device which optionally allows relative rotation between a hub sleeve and a driver or couples the hub sleeve and the driver in a torque-transmitting manner. The freewheel device has at least one first clutch ring and at least one second clutch ring, wherein the first clutch ring is coupled or coupleable to the hub sleeve in a torque-transmitting manner, and wherein the second clutch ring is coupleable or coupled to the driver in a torque-transmitting manner, and wherein the first and the second clutch ring are displaceable axially relative to the hub axle between an engaged position and a freewheel position. Provision is made here for at least one magnet arrangement accommodated in apertures in the first clutch ring to keep the clutch rings in the engaged position.

The present invention relates to a freewheel hub for a bicycle, comprising a freewheel device which optionally allows relative rotation between a hub sleeve and a driver or couples the hub sleeve and the driver in a torque-transmitting manner. The freewheel device has at least one first clutch ring and at least one second clutch ring, wherein the first clutch ring is coupled or coupleable to the hub sleeve in a torque-transmitting manner, and wherein the second clutch ring is coupleable or coupled to the driver in a torque-transmitting manner, and wherein the first and the second clutch ring are displaceable axially relative to the hub axle between an engaged position and a freewheel position. Provision is made here for at least one magnet arrangement accommodated in apertures in the first clutch ring to keep the clutch rings in the engaged position.

A method and decoupler for disengaging an output shaft from an engine in a back drive event with a backdrive decoupler. The backdrive decoupler includes an output shaft, drive shaft wherein the output shaft is selectively coupled to the drive shaft. Permanent magnets are used to transmit torque from the drive shaft to the output shaft. In a backdrive event, the decoupler decouples the output shaft from the drive shaft by uncoupling the torque transfer.

A method and decoupler for disengaging an output shaft from an engine in a back drive event with a backdrive decoupler. The backdrive decoupler includes an output shaft, drive shaft wherein the output shaft is selectively coupled to the drive shaft. Permanent magnets are used to transmit torque from the drive shaft to the output shaft. In a backdrive event, the decoupler decouples the output shaft from the drive shaft by uncoupling the torque transfer.