A vehicle wheel including a wavelength tube member may include spokes, a cylindrical rim configured to connect both circumferential portions of the spokes, and a wavelength tube member accommodated on the rim between the first and second circumferential portions of the spokes and configured to cancel sound wave generated in a cavity formed between the rim and a tire, wherein the wavelength tube member may include a rim seating portion being in surface-contact with and accommodated on an external surface of the rim; and a plurality of wavelength tube portions formed on the rim seating portion.

This electromobility vehicle includes a vehicle frame, a seat unit mounted to the vehicle frame, a suspension mounted to a front-end side of the vehicle frame, a pair of front wheels aligned in a direction parallel to a width dimension of the vehicle and supported by the suspension, at least one rear wheel supported by the vehicle frame, and a drive device that drives either of the front wheels and the rear wheel, where the front wheels are omnidirectional wheels whose outer circumferential surfaces are formed by a plurality of rollers and the pair of front wheels is supported by the suspension such that it is placed in a toe-in arrangement.

A wheel for reducing a resonance noise in a vehicle may include a cylindrical-shaped rim on which a tire is mounted, and waveguides mounted on the rim, disposed in a cavity which is a space between the rim and the tire, having a ‘U’-shaped internal passage through which a sound wave generated in the cavity enters, and configured to reflect the sound wave entering the internal passage to generate a sound wave having an inverse phase, wherein a center portion of the internal passage extends in an axial direction of the rim, and first and second end portions of the internal passage are connected to a center portion of the internal passage to allow the sound wave to propagate and extend in a circumferential direction of the rim.

A vibration absorber for vehicle wheels is capable of absorbing and attenuating vibration of a vehicle wheel and of increasing a vibration absorption capability of the wheel without changing the external appearance and design of the wheel. The vibration absorber includes a vibration absorption unit mounted on a back surface of a center cap of the vehicle wheel to absorb a first vibration in an axial direction of the wheel transmitted through the center cap.

A face spline coupling for transmitting torque between a wheel end unit and a driven shaft arranged in a longitudinal axis of a drive-wheel arrangement for a motor vehicle includes a first face spline formed in the wheel end unit and a second face spline formed in the driven shaft. The first face spline is generally perpendicular to the longitudinal axis and faces the driven shaft, and the second face spline is also generally perpendicular to the longitudinal axis and faces the wheel end unit. The first and second face splines are meshed together and detachably coupled by inter-fitting teeth of each of the first and second face splines. In addition, the teeth in each of the first and second face splines are formed in a helical configuration.

A wheel structure for a vehicle includes: a rim, and a resonator including a plurality of resonance tubes attached along an outer peripheral surface of the rim. The plurality of resonance tubes are spaced apart from each other and connected along the outer peripheral surface of the rim by a plurality of strips, and an end of each of the strips is coupled to a corresponding end of each of the resonance tubes.

A silent hub structure includes a hub housing, an interlocking ring, a detent ring and a cassette base. The interlocking ring is installed inside the hub housing and has a central through-hole slot therein through which a detent ring is rotatably disposed therethrough. The through-hole slot is internally and circumferentially provided with a plurality of receiving grooves recessed at an equal distance therebetween on the internal wall. Each of these receiving grooves is disposed with a metal roller pin along the axial direction. The forward-rotating direction side of every receiving groove forms a clamping portion; a magnetic member is disposed in the interlocking ring near the clamping portion of each of the receiving groove separately, whereas the backward-rotating direction side of every receiving groove forms a releasing portion.

An apparatus for noise reduction of a tire reduces noise within a particular frequency range generated in the tire during operation of a vehicle. The apparatus includes a housing mounted on a wheel rim, the tire being fitted over the wheel rim, and the housing having an inner space; a resonant cover provided in the inner space of the housing; and a resonance hole formed in the resonant cover to allow the inner space of the housing and an inside of the tire to communicate with each other so that the resonant cover controls pulsation via air entering and exiting through the resonance hole.

An omni-directional wheel includes: a center wheel configured to rotate about a first rotation axis extending in a first direction; a plurality of peripheral wheels arranged along a circumference of the center wheel and configured to rotate about a second rotation axis extending in a second direction different from the first direction; and a plurality of variable supports provided on the center wheel and configured to respectively support the plurality of peripheral wheels. At least one of the plurality of variable supports is configured to absorb, when an impact force is applied to at least one of the plurality of peripheral wheels being supported by the at least one of the plurality of variable supports, the impact by changing a distance between the center wheel and the at least one of the plurality of peripheral wheels.

A damper assembly for a bicycle wheel assembly may include a first damper configured to be disposed about a hub assembly of the bicycle wheel assembly. The first damper is configured to apply a first damping force against a spoke segment of at least one spoke of a plurality of spokes of the bicycle wheel assembly. The spoke segment is spaced apart from a spoke attachment member.