A clamping body freewheel unit and a drive device for motor-assisted driving of an electric bicycle having a clamping body freewheel unit. The clamping body freewheel unit includes a plurality of clamping bodies by which force transmission between an inner shaft and an outer shaft, coupled together via the clamping body freewheel unit, is allowed only in one of two opposite directions of rotation, a cage by which the plurality of clamping bodies of the clamping body freewheel unit are kept together at a defined spacing in a circumferential direction, and a plurality of rolling elements by which the inner and outer shafts are mounted rotatable relative to one another when the inner and outer shafts are coupled together via the clamping body freewheel unit, wherein at least some of the plurality of rolling elements and the clamping bodies are held jointly on the cage.

A clamping body freewheel unit and a drive device for motor-assisted driving of an electric bicycle having a clamping body freewheel unit. The clamping body freewheel unit includes a plurality of clamping bodies by which force transmission between an inner shaft and an outer shaft, coupled together via the clamping body freewheel unit, is allowed only in one of two opposite directions of rotation, a cage by which the plurality of clamping bodies of the clamping body freewheel unit are kept together at a defined spacing in a circumferential direction, and a plurality of rolling elements by which the inner and outer shafts are mounted rotatable relative to one another when the inner and outer shafts are coupled together via the clamping body freewheel unit, wherein at least some of the plurality of rolling elements and the clamping bodies are held jointly on the cage.

A power-output torque detection mechanism includes an axle having two ends to which an input assembly and an output assembly drivable by the input assembly are respectively mounted. A torsion coupling assembly is arranged between the input assembly and the output assembly and the torsion coupling assembly is operable to detect a torque value that is transmitted out in a wired manner. As such, it is possible to fulfill fine and precise detection and transmission of a torque value, while avoiding distortion resulting from noise interference to allow subsequent input of assisting power to be more timely and more accurate. Further, the structure is effectively simplified to allow easy production and maintenance for further reducing overall cost.

A power-output torque detection mechanism includes an axle having two ends to which an input assembly and an output assembly drivable by the input assembly are respectively mounted. A torsion coupling assembly is arranged between the input assembly and the output assembly and the torsion coupling assembly is operable to detect a torque value that is transmitted out in a wired manner. As such, it is possible to fulfill fine and precise detection and transmission of a torque value, while avoiding distortion resulting from noise interference to allow subsequent input of assisting power to be more timely and more accurate. Further, the structure is effectively simplified to allow easy production and maintenance for further reducing overall cost.

An outer contact surface element of a one-way clutch is configured to contact at least one clamping body of the one-way clutch when an inner ring of the one-way clutch rotates in a first direction. The outer contact surface element includes a hollow-cylindrical section, and at least one radially outwardly projecting lug. The outer contact surface element may also include features for connecting the outer contact surface element to a support bearing.

An outer contact surface element of a one-way clutch is configured to contact at least one clamping body of the one-way clutch when an inner ring of the one-way clutch rotates in a first direction. The outer contact surface element includes a hollow-cylindrical section, and at least one radially outwardly projecting lug. The outer contact surface element may also include features for connecting the outer contact surface element to a support bearing.

An outer contact surface element of a one-way clutch is configured to contact at least one clamping body of the one-way clutch when an inner ring of the one-way clutch rotates in a first direction. The outer contact surface element includes a hollow-cylindrical section, and at least one radially outwardly projecting lug. The outer contact surface element may also include features for connecting the outer contact surface element to a support bearing.

An outer contact surface element of a one-way clutch is configured to contact at least one clamping body of the one-way clutch when an inner ring of the one-way clutch rotates in a first direction. The outer contact surface element includes a hollow-cylindrical section, and at least one radially outwardly projecting lug. The outer contact surface element may also include features for connecting the outer contact surface element to a support bearing.

The disclosure provides a drive device including a gear, a bearing, and a motor rotor. The gear includes an installation hole. The bearing is disposed in the installation hole of the gear and includes a rotation hole, a sliding groove, and a drive assembly. The sliding groove communicates with the rotation hole, and the drive assembly is movably disposed in the sliding groove. The motor rotor rotatably passes through the rotation hole of the bearing. The drive assembly is moved to lock the bearing by the rotation of the motor rotor, and the torsion force of the motor rotor is transmitted to the gear through the bearing.

A torque transmission device includes an input disc, an output disc, an intermediate disc positioned between the input disc and the output disc, a first pair of links coupled by a first side to the input disc and by a second side, opposite to the first side, to the intermediate disc, the links of the first pair being positioned diametrically opposite each other relative to the intermediate central axis, a second pair of links coupled by a first side to the intermediate disc and by a second side, opposite to the first side, to the output disc, the links of the second pair being positioned diametrically opposite each other relative to the intermediate central axis of the intermediate disc, the two pairs of links being aligned in two respective directions perpendicular to each other.