The present invention provides a stabilizer, which comprises a receiving device; a guide plate element for connection with a chain, the guide plate element being movably mounted on the receiving device and performing a rotation state through an elastic element; and a clutch device mounted on the receiving device and connected with the guide plate element and used for providing one-way resistance when the guide plate element moves relative to the receiving device. When a vehicle body jounces, the guide plate element rotates upwardly under force, the chain is tensioned, and the clutch device is in a free rotation state. When the guide plate element moves towards an opposite direction under an action of force, the clutch device provides one-way resistance, so that the guide plate element can maintain a tensioning state of the chain for a longer time, and the effect of stabilizing the chain is achieved.

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 cage freewheel for installing in the clamping gap between a shaft and a hub, in particular in the drive of an e-bike, having a sprag cage which, in one embodiment, is fitted continuously in the circumferential direction with sprags arranged pivotably in the sprag cage, with the sprags being loaded resiliently in the engagement direction. Here, a bearing disk is arranged axially adjacent to the sprag cage. In a further embodiment, the cage ring is fitted consecutively in the circumferential direction both with bearing rollers and with sprags. In addition, a shaft and hub arrangement and to an e-bike drive having a cage freewheel with the abovementioned features is also provided.

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.

A harmonic drive system for a pedal-electric-cycle comprises a transmission gear device including a wave generator assembled by an elliptical cam and a flexible bearing, a flexible-flexspline, a rigid-circular-spline having rigid-circular-spline internal gear teeth, a gear set, and a one-way clutch having an inner surface defining a space for containing a spindle of the pedal-electric-cycle. A first end of the flexible-flexspline has flexible-flexspline external gear teeth for meshing with the rigid-circular-spline internal gear teeth and an inner surface defining a space for containing the wave generator. The gear set has a first input portion connected to a second end of the flexible-flexspline, a second input portion having an inner surface defining a space for containing the one-way clutch, and an output portion connected to a sprocket of the pedal-electric-cycle. The first input portion has a first-input rotational axis. The second input portion has a second-input rotational axis.

A one-way bearing, a bearing assembly, and a free-wheeling mechanism for a bicycle are disclosed herewith. The bearing assembly, in one aspect, includes a one-directional bearing having an inner and an outer race, the one-directional bearing including a sprag clutch mechanism. The bearing assembly, according to this aspect, further includes a first thrust bearing and a second thrust bearing, wherein the inner and outer races of the one-directional bearing are formed to retain one or both of the first or second thrust bearings, and a one-directional bearing mechanism located between the inner and outer races. In at least one aspect, the inner race has a flange extending in a radially outward direction, the sprag clutch mechanism abuts the flange on an inner axial side of the flange, and the flange abuts the first thrust bearing on an outer axial side of the flange.

A one-way bearing, a bearing assembly, and a free-wheeling mechanism for a bicycle are disclosed herewith. The bearing assembly, in one aspect, includes a one-directional bearing having an inner and an outer race, the one-directional bearing including a sprag clutch mechanism. The bearing assembly, according to this aspect, further includes a first thrust bearing and a second thrust bearing, wherein the inner and outer races of the one-directional bearing are formed to retain one or both of the first or second thrust bearings, and a one-directional bearing mechanism located between the inner and outer races. In at least one aspect, the inner race has a flange extending in a radially outward direction, the sprag clutch mechanism abuts the flange on an inner axial side of the flange, and the flange abuts the first thrust bearing on an outer axial side of the flange.

A stabilizer includes a receiving device, a guide plate element for connection with a chain, and a clutch device. The guide plate element is movably mounted on the receiving device and performing a rotation state through an elastic element. The clutch device is mounted on the receiving device and connected with the guide plate element and used for providing one-way resistance. When a vehicle body jounces, the guide plate element rotates upwardly under force, the chain is tensioned, and the clutch device is in a free rotation state. When the guide plate element moves towards an opposite direction under force, the clutch device provides one-way resistance, so that the guide plate element can maintain a tensioning state of the chain for a longer time, and the effect of stabilizing the chain is achieved.