A bicycle hub includes an axle, a main body, a freehub body, and a clutch, which are engaged with the axle. The freehub body is disposed with first splines, wherein each of the first splines is defined to have a longitudinal direction. Each of the longitudinal directions obliquely intersects with an axial direction of the freehub body. The clutch is disposed with second splines, wherein the second splines are engaged with the first splines in a way that the second splines are movable along a longitudinal direction of the first splines. With such design, the clutch of the bicycle hub could be smoothly operated.

A transmission assembly installed on a freehub body of a bicycle is provided. The freehub body rotates about a rotation axis and is provided with a torque transmission portion on a radial outer side. The transmission assembly includes a first adapter having a main body portion connected to the torque transmission portion, a second adapter having a second connecting portion and a pressing portion connected to the second connecting portion, and a friction member. The main body portion is sleeved on the freehub body and includes a first connecting portion having a first thread portion. The second connecting portion has a second thread portion adapted to be screwed to the first thread portion of the first connecting portion. The friction member is disposed in an accommodation space formed by the pressing portion, the radial outer side of the freehub body and one side of the first connecting portion.

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 wheel hub (10) comprises a main body (12) and a drive axle arrangement (14) extending through the main body (12). The main body (12) is rotatable about the drive axle arrangement (14). The wheel hub (10) further includes a transmission assembly comprising first and second transmission arrangements (44, 46). The first transmission arrangement (44) is provided on the drive axle arrangement (14), and the second transmission arrangement (46) is provided on the main body (12). The first transmission arrangement (44) is cooperable with the second transmission arrangement (46) to transmit a driving force from the drive axle arrangement (14) to the main body (12). The drive axle arrangement (14) comprises an axle portion (34) and a sprocket carrier (42). The axle portion (34) extends through the main body (12), and the sprocket carrier (42) is configured to carry at least one sprocket.

A wheel hub is disclosed. In an embodiment, the wheel hub includes a wheel axle, a clip encompassing an outer surface of the of the wheel axle in a C-shape manner and mounted torsionally rigid against the wheel axle, a magnetic field sensor mounted on the clip and a pole ring arranged concentrically around the wheel axle in a distance to the magnetic field sensor and supported such that the pole ring is rotatable relatively to the wheel axle, wherein the magnetic field sensor is configured to detect a magnetic field originating from the pole ring so that a movement of the pole ring relative to the wheel axle is deducible.

A hub for partially muscle-powered vehicles, including a hollow hub axle with a cylindrical inner through hole for the passage of a clamping axle, a hub shell rotatably supported relative to the hub axle by two hub bearings, a rotor rotatably supported relative to the hub axle, and a freewheel device with a hub-side freewheel component and a rotor-side freewheel component, each having axial engagement components for engagement with one another. The hub shell is rotatably supported relative to the hub axle in a rotor-side end region by a rotor-side hub bearing, and in an opposite end region of the hub shell by another hub bearing. The hub-side freewheel component is non-rotatably 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.

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 hub structure includes a tubular body defining a hollow cavity. The tubular body includes a first surface and a second surface, the first surface defining a first groove extending along an axial direction of the tubular body. The first groove is defined by an inner sidewall surrounding the hollow cavity, an outer sidewall spaced from and configured to face the inner sidewall, and a bottom surface coupling the inner sidewall and the outer sidewall.

A hub is provided for a human-powered vehicle. The hub comprises a hub axle, a hub body, a sprocket support structure, a detected part and a rotation detection sensor. The hub axle has a center axis. The hub body is rotatably disposed around the center axis. The sprocket support structure is rotatably disposed around the center axis to transmit a driving force to the hub body while rotating in a driving rotational direction around the center axis. The detected part is provided to the sprocket support structure. The rotation detection sensor is configured to detect the detected part to detect rotation of the sprocket support structure around the center axis and being disposed in the hub body.

A hub is provided for a human-powered vehicle, and includes a hub axle, a rotating body, a bearing, an inner retainer and an outer retainer. The rotating body is rotatably mounted on the hub axle. The bearing rotatably coupling the rotating body to the hub axle. The bearing includes an inner race, an outer race and a plurality of roller elements. The inner race has an axially facing portion abutting an inner abutment of the hub axle. The outer race has an axially facing portion abutting an outer abutment of the rotating body. The roller elements are disposed between the inner race and the outer race. The inner retainer is coupled to the hub axle and abuts an axially facing portion of the inner race. The outer retainer is coupled to the rotating body and abuts an axially facing portion of the outer race.