A hub for bicycles or the like including a hub shell which is rotatably supported relative to a hub axle, a rotor rotatably supported relative to the hub axle, and a freewheel device having two interacting freewheel components namely, a hub-side freewheel component and a rotor-side freewheel component. The two freewheel components each contain axial engagement components. The hub-side freewheel component is non-rotatably and axially fixedly connected with the hub shell. The rotor-side freewheel component is non-rotatably connected with the rotor and is movable in the axial direction relative to the rotor and the hub shell between a freewheel position and an engagement position. Rolling members are provided for defined accommodation in the hub-side freewheel component to support the hub shell relative to the hub axle. The hub-side freewheel component is connected with the hub shell through a multiple thread having at least two separate, axially spaced apart thread grooves.

A planar ratchet assembly is provided for a human-powered vehicle, and includes a first ratchet member and a second ratchet member. The first ratchet member includes an axial surface defining a plurality of first serrated teeth having a first driving surface and a first non-driving surface. At least one of the first non-driving surfaces includes a convex curved surface that has a radius of curvature of at least 0.5 mm. The second ratchet member includes an axial surface defining a plurality of second serrated teeth having a second driving surface and a second non-driving surface. The first ratchet member and the second ratchet member rotate together in a driving direction. At least one of the first ratchet member and the second ratchet member moves in an axial direction to permit relative rotation between the first ratchet member and the second ratchet member in a non-driving direction.

A planar ratchet assembly is provided for a human-powered vehicle, and includes a first ratchet member and a second ratchet member. The first ratchet member includes an axial surface defining a plurality of first serrated teeth having a first driving surface and a first non-driving surface. At least one of the first non-driving surfaces includes a convex curved surface that has a radius of curvature of at least 0.5 mm. The second ratchet member includes an axial surface defining a plurality of second serrated teeth having a second driving surface and a second non-driving surface. The first ratchet member and the second ratchet member rotate together in a driving direction. At least one of the first ratchet member and the second ratchet member moves in an axial direction to permit relative rotation between the first ratchet member and the second ratchet member in a non-driving direction.

A freewheel mechanism comprising two coaxial carrying members for eventually transmitting torque there between, being both members axially fixed but rotatably mounted along an axis. This mechanism further comprises longitudinal pawls housed in cavities, predominantly radially disposed in one of the carrying members, arranged to engage and disengage with a toothed ring placed between said carrying members. This mechanism allows a partial declutch of the carrying members, due to said toothed ring is always forced by longitudinal pawls, to slide bi-directionally in the axial direction, being declutching the axial movement from a first clutch position corresponding to non-freewheeling, to a second declutch position corresponding to freewheeling, and being clutching the axial movement of the toothed ring from the second declutch position to the first clutch position.

A freewheel mechanism comprising two coaxial carrying members for eventually transmitting torque there between, being both members axially fixed but rotatably mounted along an axis. This mechanism further comprises longitudinal pawls housed in cavities, predominantly radially disposed in one of the carrying members, arranged to engage and disengage with a toothed ring placed between said carrying members. This mechanism allows a partial declutch of the carrying members, due to said toothed ring is always forced by longitudinal pawls, to slide bi-directionally in the axial direction, being declutching the axial movement from a first clutch position corresponding to non-freewheeling, to a second declutch position corresponding to freewheeling, and being clutching the axial movement of the toothed ring from the second declutch position to the first clutch position.

A torque coupling comprising a drive body, an output side body which is coaxially arranged, a pressure disk which is coaxially arranged, movable in rotation coaxial direction, and having a first torque transmission surface on its face side, and a torque transmission device. The torque transmission device (5) comprises rigid pressure transfer elements (6) loadable by compressive forces only upon a gripping of the non driven by the driven torque transmission surface which points in drive direction (A), thereby moving in rotation coaxial direction contrary to the pressure disk (3), and pressing the same in direction of the second torque transmission surface (4B).

A torque coupling comprising a drive body, an output side body which is coaxially arranged, a pressure disk which is coaxially arranged, movable in rotation coaxial direction, and having a first torque transmission surface on its face side, and a torque transmission device. The torque transmission device (5) comprises rigid pressure transfer elements (6) loadable by compressive forces only upon a gripping of the non driven by the driven torque transmission surface which points in drive direction (A), thereby moving in rotation coaxial direction contrary to the pressure disk (3), and pressing the same in direction of the second torque transmission surface (4B).

A method for immobilizing a vehicle, in particular an electric bicycle. A drive train of the vehicle includes a clutch that includes a first clutch component and a second clutch component that are situated coaxially with respect to one another and configured to be rotatably fixedly connected to one another by mechanical contact in at least one predefined rotational direction. The method includes: detecting an input of a user for activating an immobilizer, and actuating an actuator as a function of the detected input, as the result of which the first clutch component and/or the second clutch component are/is displaced in the axial direction, as the result of which the mechanical contact between the first clutch component and the second clutch component is separated.

A method for immobilizing a vehicle, in particular an electric bicycle. A drive train of the vehicle includes a clutch that includes a first clutch component and a second clutch component that are situated coaxially with respect to one another and configured to be rotatably fixedly connected to one another by mechanical contact in at least one predefined rotational direction. The method includes: detecting an input of a user for activating an immobilizer, and actuating an actuator as a function of the detected input, as the result of which the first clutch component and/or the second clutch component are/is displaced in the axial direction, as the result of which the mechanical contact between the first clutch component and the second clutch component is separated.

The present disclosure includes a rear wheel of a bicycle including a tire rim with spokes, a hub axle on which at least one chain drive wheel is rotatably mounted, and a one-way clutch assembly. The one-way clutch assembly includes a flange and a disc placed next to each other, seated coaxially and with a gap. The flange is ball-bearing mounted on the hub axle, and the disc is integrated with the chain drive wheel. In some instances, these elements have side surfaces facing each other and one of the elements: the flange or the disc, has teeth on its side surface, and the other element has on its side surface at least one hook located at a distance from the axis of the hub similar to or the same as the position of the tooth.