A hub assembly for bicycle is provided. The hub assembly includes a hub shell having first and second ends at a distance from each other along a rotational axis, a first engagement structure pair having a first inner engagement structure and a first outer engagement structure, the first engagement structure pair being releasably engagable for co-rotation; and a second engagement structure pair having a second inner engagement structure and a second outer engagement structure, the pair being second engagement structure releasably engagable for co-rotation. The first inner engagement structure and the second outer engagement structure are configured not to engage with each other, and/or the second inner engagement structure and the first outer engagement structure are configured not to engage with each other.

A quick-release structure includes a fork, a clamping unit, and a quick-release unit. The fork has a receiving space. The clamping unit includes a base, a plurality of arc-shaped clamping members, an elastic ring, and a shaft cover. The base is fixed in the receiving space. The base has a circular cavity. The circular cavity is provided with a plurality of elongated grooves. The arc-shaped clamping members each have a first axle to slide in a corresponding one of the elongated grooves and a second axle. A center of the arc-shaped clamping members is formed with an adjustable clamping opening. The shaft cover is formed with a plurality of axle grooves arranged annularly. The second axles of the arc-shaped clamping members are pivotally connected to the respective axle grooves. The quick-release unit has a shaft. After the shaft passes through the adjustable clamping opening, the adjustable clamping opening subjected to the elastic force of the elastic ring is retracted to clamp the shaft.

A bicycle wheel securing device comprises a shaft, an axial abutment structure, a bicycle-body engaging structure, a manual actuator, and a shaft-end retaining structure. The shaft has a first shaft end, a second shaft end, and a longitudinal center axis. The manual actuator is operatively connected to the axial abutment structure to bias the axial abutment structure against a first wheel attachment part of a bicycle body in response to operation of the manual actuator in a securing state where the bicycle-body engaging structure is engaged with a second wheel attachment part of the bicycle body. The shaft-end retaining structure is at least partly disposed at the second shaft end to retain the second shaft end in the first wheel attachment part in a maintenance state where the second shaft end is positioned in the first wheel attachment part of the bicycle body.

An axle for removably retaining a wheel on a vehicle. The axle includes a rotary-type connector at a first end thereof; a cam assembly operatively connected to the second end, the cam assembly including a cam having an axis of rotation; a lever operatively connected to a second end of the axle, the lever being rotatable about an axis substantially parallel to the axis of rotation of the cam, between an open position in which the axle is removable from and mountable on the vehicle and a closed position in which the axle is retained on the vehicle; and a cam assembly operatively connected to the second end; and a lever stop ensuring that an angle of maximum rotation for the lever from the closed position is less than 180 degrees.

A quick release mechanism for bicycle parts that comprises a locking mechanism and a rod. The locking mechanism comprises a fixed locking core and a rotating housing handle. One end of said rod is attached to the fixed locking core. Said rotating housing handle has a ring-shaped base with two rings separated by an inner cavity. The inner side of said ring-shaped base has several punctures in it. Said rotating housing handle has locking pins designed to be inserted into said punctures in said inner side of said ring-shaped base of the rotating housing handle. Said locking pins are designed to be inserted into said fixed locking core. Said rotating housing handle serves both as a rotating housing of said locking mechanism and as a handle of said quick release mechanism.

The device for mounting a bicycle wheel comprises a pin having a longitudinal axial through hole. A first free end portion of the pin has a threading. A second free end has a pin head. A lever for rotating the pin is housed in the axial through hole and is axially moveable between two operative positions. The lever has a first lever element housed in the axial through hole in the two operative positions, and a second lever element, pivoted to the first lever element about an axis perpendicular to the longitudinal axis, that is housed in the axial through hole when the lever is a first operative position, and that is positioned outside the axial through hole when the lever is in a second operative position for allowing a torque transfer between lever and pin following the rotation of the second lever element about the longitudinal axis.

An axially-switchable quick release device, including: a rod extending in an axial direction; a clutch shaft disposed at an end of the rod and having a meshing teeth portion and an idling ring portion; and a quick release lever having a fitting portion and a turning portion connected to the fitting portion The fitting portion has a fitting teeth portion sleeved onto the clutch shaft and movable along the axial direction and between a meshing position and an idling position. When the quick release lever is at the meshing position, the fitting teeth portion engages with the meshing teeth portion so that the quick release lever and the clutch shaft can rotate synchronously. When the quick release lever is at the idling position, the fitting teeth portion moves to the idling ring portion so that the quick release lever can rotate freely relative to the clutch shaft.

A quick release device for at least partially muscle-powered two-wheeled vehicles such as bicycles, having an axle unit and a clamping mechanism. The axle unit includes an axle extending axially, a locking means at a first end of the axle unit and a fastener at a second end of the axle unit. The clamping mechanism is suitable for mounting and demounting the axle unit to a two-wheeled vehicle. The clamping mechanism includes an operating lever and a clamping component connected therewith. The clamping component can be non-rotatably coupled with the axle unit and can be decoupled from the axle unit. The operating lever of the clamping mechanism can be moved from an engagement position in which it is non-rotatably connected with the clamping component to a rotary position in which it is freely rotatable relative to the clamping component, while the clamping component is non-rotatably coupled with the axle unit.

A quick release skewer assembly including a skewer shaft with a first end portion and a second end portion axially spaced from the first end portion, a first clamping element connected to the first end portion with a first grip face, a clamping assembly adjacent the second end portion including an anchor element, and a second clamping element with a second grip face. The first grip face is axially separated from the second grip face by a grip distance. The first clamping element is axially and rotationally engaged to the skewer. The anchor element is threadably connected to the skewer shaft such that the grip distance may be selectively threadably adjusted. The clamping assembly is operative to selectively displace the second grip face in a generally linear and axial direction between: (i) an open orientation where the grip distance is axially expanded and distal; and (ii) a closed orientation where the grip distance is axially contracted and proximal relative to the open orientation.

An apparatus, includes a first pair of brackets coupled to a first bicycle frame component, and one of the first pair of brackets has a radially-inwardly extending first protrusion. The apparatus includes a first gear component coupled to a second bicycle frame component, and the gear component is rotatably coupled within the first pair of brackets. The first gear component has a first set of recesses radially spaced from each other about a periphery thereof. The apparatus further includes a first clamping component engaging at least one of the first pair of brackets and selectively biasing the first protrusion into one of the first set of recesses to rotatably lock the first gear component with respect to the first pair of brackets.