A freehub of a bicycle contains: a body fitted and rotating on a rotary shaft. A receiving sleeve is connected with the body and fitted on the rotary shaft, and the receiving sleeve includes an accommodation holder configured to accommodate a freewheel. A ratchet assembly is mounted between the body and the receiving sleeve, the ratchet assembly includes multiple chutes, and a central axis of a respective chute is not parallel to a central axis of the rotary shaft. A toothed ring is fitted between the fixing element and the body. The ratchet assembly includes multiple teeth, multiple engagement elements, and multiple resilient elements. A respective resilient element abuts against the respective chute and a respective engagement element, such that the respective engagement element is urged by the respective resilient element to linearly move toward the respective tooth so as to engage with the respective tooth.

A directional transmission mechanism, a directional sprocket apparatus using the directional transmission mechanism, and a pedal device using the directional sprocket apparatus are disclosed. The directional transmission mechanism includes a driving shaft, an output shaft, a co-rotating wheel, a reverse-rotating wheel, and a switching mechanism. The co-rotating wheel set drives the output shaft to rotate in a direction that is the same as that of the driving shaft. The reverse-rotating wheel set drives the output shaft to rotate in a direction opposite to that of the driving shaft. The switching mechanism switches the driving shaft to drive the co-rotating wheel set or drive the reverse-rotating wheel set to rotate, so as to enable the output shaft to rotate directionally. The co-rotating wheel set is connected with the driving shaft and the output shaft, and the reverse-rotating wheel set is connected with the driving shaft and the output shaft.

A directional transmission mechanism, a directional sprocket apparatus using the directional transmission mechanism, and a pedal device using the directional sprocket apparatus are disclosed. The directional transmission mechanism includes a driving shaft, an output shaft, a co-rotating wheel, a reverse-rotating wheel, and a switching mechanism. The co-rotating wheel set drives the output shaft to rotate in a direction that is the same as that of the driving shaft. The reverse-rotating wheel set drives the output shaft to rotate in a direction opposite to that of the driving shaft. The switching mechanism switches the driving shaft to drive the co-rotating wheel set or drive the reverse-rotating wheel set to rotate, so as to enable the output shaft to rotate directionally. The co-rotating wheel set is connected with the driving shaft and the output shaft, and the reverse-rotating wheel set is connected with the driving shaft and the output shaft.

A hub for bicycles includes a hub shell which is rotatably supported relative to a hub axle by two roller bearings disposed on opposite ends of the hub shell, a rotor rotatably supported relative to the hub axle by two rotor bearings, and a freewheel device having an interacting hub-side freewheel component and a rotor-side freewheel component. The two freewheel components each have axial engagement elements and are axially movable relative to one another between a freewheel position and an intermeshing engaging position. The rotor is disposed in the same axial position both in the freewheel position and in the engaging position. A driving torque is transmitted in the engaging position. The hub-side freewheel component has an inner central receiving space with a bearing seat and a roller bearing received to rotatably support the hub shell. The hub-side freewheel component includes an appendix protruding outwardly from the axial body section.

A hub for bicycles includes a hub shell which is rotatably supported relative to a hub axle by two roller bearings disposed on opposite ends of the hub shell, a rotor rotatably supported relative to the hub axle by two rotor bearings, and a freewheel device having an interacting hub-side freewheel component and a rotor-side freewheel component. The two freewheel components each have axial engagement elements and are axially movable relative to one another between a freewheel position and an intermeshing engaging position. The rotor is disposed in the same axial position both in the freewheel position and in the engaging position. A driving torque is transmitted in the engaging position. The hub-side freewheel component has an inner central receiving space with a bearing seat and a roller bearing received to rotatably support the hub shell. The hub-side freewheel component includes an appendix protruding outwardly from the axial body section.

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 bicycle hub assembly comprises a hub axle, a hub shell, and a sprocket support body. The sprocket support body includes a tubular part, a first sprocket engaging tooth, and a second sprocket engaging tooth. The tubular part includes an outer peripheral surface and an attachment portion. The first sprocket engaging tooth includes a first radially outer surface provided radially outward of the outer peripheral surface. The second sprocket engaging tooth includes a second radially outer surface and a third radially outer surface. The third radially outer surface is provided radially outward of the outer peripheral surface and radially inward of the second radially outer surface. A first distance is defined from the outer peripheral surface to the first radially outer surface. A second distance is defined from the outer peripheral surface to the third radially outer surface. The second distance is shorter than the first distance.

A bicycle hub assembly comprises a hub axle, a hub shell, and a sprocket support body. The sprocket support body includes a tubular part, a first sprocket engaging tooth, and a second sprocket engaging tooth. The tubular part includes an outer peripheral surface and an attachment portion. The first sprocket engaging tooth includes a first radially outer surface provided radially outward of the outer peripheral surface. The second sprocket engaging tooth includes a second radially outer surface and a third radially outer surface. The third radially outer surface is provided radially outward of the outer peripheral surface and radially inward of the second radially outer surface. A first distance is defined from the outer peripheral surface to the first radially outer surface. A second distance is defined from the outer peripheral surface to the third radially outer surface. The second distance is shorter than the first distance.

A directional transmission mechanism, a directional sprocket apparatus using the directional transmission mechanism, and a pedal device using the directional sprocket apparatus are disclosed. The directional transmission mechanism includes a driving shaft, an output shaft, a co-rotating wheel, a reverse-rotating wheel, and a switching mechanism. The co-rotating wheel set drives the output shaft to rotate in a direction that is the same as that of the driving shaft. The reverse-rotating wheel set drives the output shaft to rotate in a direction opposite to that of the driving shaft. The switching mechanism switches the driving shaft to drive the co-rotating wheel set or drive the reverse-rotating wheel set to rotate, so as to enable the output shaft to rotate directionally. The co-rotating wheel set is connected with the driving shaft and the output shaft, and the reverse-rotating wheel set is connected with the driving shaft and the output shaft.