A sub-air chamber member includes: a lower surface portion disposed proximate to the outer circumferential surface of the well portion; an upper surface portion disposed radially outside of the lower surface portion; a pair of edge portions engaging with the well portion. A space portion is positioned above the upper surface portion, the space portion being formed by a part of the upper surface portion and an inner wall surface of the well portion. A strong axis of principal axes of a section of the sub-air chamber member perpendicular to an axis of the sub-air chamber member is inclined by a first predetermined angle relative to a wheel width direction Y.

A sub-air chamber member includes: a lower surface portion disposed proximate to the outer circumferential surface of the well portion; an upper surface portion disposed radially outside of the lower surface portion; a pair of edge portions engaging with the well portion. A space portion is positioned above the upper surface portion, the space portion being formed by a part of the upper surface portion and an inner wall surface of the well portion. A strong axis of principal axes of a section of the sub-air chamber member perpendicular to an axis of the sub-air chamber member is inclined by a first predetermined angle relative to a wheel width direction Y.

The present invention provides a single-point reinforcing structure for spoke of bicycle rim which includes a left side wall and a right side wall continuously extending along a circumferential direction of the bicycle rim. The left side wall and right side wall are formed at the left side and the right side of the bicycle rim respectively and are symmetrical to each other. A surface of the left side wall and a surface of the right side wall opposite to each other are connected through a connecting wall. The upper ends of the left side wall and the right side wall extend upward toward a direction close to a symmetry axis and are connected. The left side wall, the right side wall, and the connecting wall are surrounded to form an upper cavity of the bicycle rim. A plurality of connecting holes are arranged on the upper cavity.

A fixture for sticking balance blocks to the surface of a hub includes a base, in which a fixed plate is welded to one side of the upper end of the base, a slide rail butted to the fixed plate is connected to the other side of the base by bolts, a sliding block is connected to the slide rail in a sliding manner, the middle positions of the fixed plate and the sliding block are respectively connected with a first roller and a second roller of the same type by bearings, each of the first roller and the second roller is sleeved with a rubber sleeve of the same specification, and a support table is mounted under the base.

A fixture for sticking balance blocks to the surface of a hub includes a base, in which a fixed plate is welded to one side of the upper end of the base, a slide rail butted to the fixed plate is connected to the other side of the base by bolts, a sliding block is connected to the slide rail in a sliding manner, the middle positions of the fixed plate and the sliding block are respectively connected with a first roller and a second roller of the same type by bearings, each of the first roller and the second roller is sleeved with a rubber sleeve of the same specification, and a support table is mounted under the base.

The invention relates to a wheel rim for a vehicle wheel with cover elements.

A rim with an inner flange having strip weight reduction sockets and a wheel are provided. The rim includes the inner flange, a middle portion and an outer flange which are all annular and are connected end to end to form an annular rim, in which trapezoidal weight reduction sockets are provided on the inner wall of the inner flange; the bottom edges of the weight reduction sockets are flush with the edge of the inner flange; the top edge of each weight reduction socket has fillets; and the weight reduction sockets have a bottom edge length of 5-30 mm, a height of 15-60 mm, a top edge length of 5-15 mm, a base angle of 72-83, and a depth of 1-5 mm.

A bicycle wheel comprises a rim and a valve assembly. The rim includes a radially inner wall having an inner opening and a radially outer wall having an outer opening. A first portion of the rim includes a first securing feature (e.g., inner threads). The valve assembly is positioned in the inner opening and outer opening and includes a second securing feature (e.g., outer threads) engaging the first securing feature. The rim can include a plate that defines the first engaging feature. The valve assembly preferably includes a valve stem and a resilient bumper coupled to the valve stem and aligned with a second portion of the rim. The valve assembly can further include a seal member compressed between the valve stem and the rim. Preferably, the seal member is positioned in an annular groove in an underside of an enlarged head of the valve stem.

A pneumatic tire may include a tread, an inner tire surface positioned opposite the tread, and an internal heat exchanger attached to the inner tire surface. The wheel assembly may include a wheel rim, the pneumatic tire, and a pump. The pneumatic tire may be attached to the wheel rim. The pump may be attached to the wheel rim outside of the pneumatic tire and configured to rotate with the wheel rim. The pump may be coupled to the internal heat exchanger through an opening in the wheel rim. The wheel assembly may further include a coolant disposed in the internal heat exchanger and configured to absorb heat from the pneumatic tire. The wheel assembly may also include an external heat exchanger configured to remove heat from the coolant.

A pneumatic tire may include a tread, an inner tire surface positioned opposite the tread, and an internal heat exchanger attached to the inner tire surface. The wheel assembly may include a wheel rim, the pneumatic tire, and a pump. The pneumatic tire may be attached to the wheel rim. The pump may be attached to the wheel rim outside of the pneumatic tire and configured to rotate with the wheel rim. The pump may be coupled to the internal heat exchanger through an opening in the wheel rim. The wheel assembly may further include a coolant disposed in the internal heat exchanger and configured to absorb heat from the pneumatic tire. The wheel assembly may also include an external heat exchanger configured to remove heat from the coolant.