Abstract: An elastic wheel comprises a rim for mounting a tire, a disk to be fixed to an axle, and a connecting apparatus for connecting elastically between the rim and disk, the apparatus comprising a pair of axially spaced internal flanges each provided on an inner circumference side of the rim and extending circumferentially, an external flange provided on a radially outer portion of the disk, the external flange disposed in a space between the internal flanges with an axial gap on its both sides and extending circumferentially, a pair of rubber dampers each disposed in the axial gap and connecting between the internal and external flanges, wherein each internal flange is provided on its axially inner side with a first groove, the external flange is provided on its both sides with a second groove so as to face each first groove, axial ends of each damper are inserted into the first and second grooves, and a radial gap is provided between the external flange and the inner circumference side of the rim in the space.

Abstract: An elastic wheel comprises a circumferentially extending rim for supporting a tire, a disk fixed to an axle, a damper member disposed between the rim and the disk and made of elastic material for absorbing vibration, and a protecting member made of elastic material and covering the damper member.

Abstract: An elastic wheel comprises a rim for mounting a tire, a disk to be fixed to an axle, and a connecting apparatus for connecting elastically between the rim and disk, the apparatus comprising a pair of axially spaced internal flanges each provided on an inner circumference side of the rim and extending circumferentially, an external flange provided on a radially outer portion of the disk, the external flange disposed in a space between the internal flanges with an axial gap on its both sides and extending circumferentially, a pair of rubber dampers each disposed in the axial gap and connecting between the internal and external flanges, wherein each internal flange is provided on its axially inner side with a first groove, the external flange is provided on its both sides with a second groove so as to face each first groove, axial ends of each damper are inserted into the first and second grooves, and a radial gap is provided between the external flange and the inner circumference side of the rim in the space.

Abstract: A rotation drive unit having a first reduction mechanism of traction transmission system comprising a drive roller attached to a drive shaft and a driven roller attached to a driven shaft, and a second reduction mechanism of gear transmission system comprising a drive gear attached to the drive shaft and a driven gear attached to the driven shaft. The first reduction mechanism generates a braking effort while making slippage between the rollers during transmission of a rotational driving force from the drive shaft, and exerts a torque load on the second reduction mechanism of the gear transmission system. Since this unit transmits the rotational driving force via the first reduction mechanism while exerting the load upon the second reduction mechanism, it provides a satisfactory and reliable speed-reducing function as well as reliable and accurate transmission of the rotational driving force even if equipped with a plurality of driven shafts coupled to the single drive shaft.

Abstract: A suspension element is disposed inside of a rim. The upper end of the suspension element is connected to a first support member mounted to a vehicle body. The lower end of the suspension element is connected to a second support member rotatably connected to the disk on the wheel. The shock and vibration from the wheel in the vertical direction are damped and absorbed by the suspension element. Also, a spring mechanism and a flat bearing are disposed in the wheel. The spring mechanism is disposed between a rotating member rotatably supported on the vehicle body and the rim of the wheel. If the rotating member is fixed to a brake drum, braking torque is transmitted to the wheel through the spring mechanism. The flat bearing is disposed between the rim and the rotating member and prohibits the axial movement of the wheel relative to the vehicle body.

Abstract: [Problems]To provide a wheel assembly allowing the elimination of an installation space for suspension element on the outside of a wheel and capable of satisfactorily damping and absorbing shock and vibration in the vertical direction. [Means for Solving Problems] Suspension element (70) is disposed, in a generally raised state, inside of a rim (11). The upper end of the suspension element (70) is connected to a first support member (50) mounted to a vehicle body. The lower end of the suspension element (70) is connected to a second support member (60) rotatably connected to the disk (12) on the wheel (10). The shock and vibration from the wheel (10) in the vertical direction are damped and absorbed by the suspension element (70). Also, a spring mechanism (30) and a flat bearing (40) are disposed in the wheel (10). The spring mechanism (30) is disposed between a rotating member (20) rotatably supported on the vehicle body and the rim (11) of the wheel (10).

Abstract: An eccentric thrust bearing assembly mounted in a wheel with built-in suspension including: an outside wheel member including a rim portion to which a tire is mounted; an inside wheel member including a disk portion coupled with an axle; and an elastic member interposed between the outside wheel member and the inside wheel member, the bearing assembly permitting an eccentric relative movement between the wheel members while bearing an axial load applied between the wheel members.

Abstract: A wheel with a damper for an automobile includes a rim, a disk, and a damper. The damper includes a rubber member. The rubber member includes a first portion and a second portion. The first portion performs mainly an elastic shear deflection and the second portion acts as a stopper. The first portion extends in an axial direction of the wheel and has an inside surface and an outside surface which contact a space and are not constrained. The end surfaces of the first portion extend perpendicularly to the axial direction of the wheel. A vibrational system having a spring of the first portion of the rubber member and a mass of an automobile is designed so as to have a first natural frequency in a range of 6-12 H, preferably, in a range of 8-10 Hz.

Abstract: A full face type cast wheel, wherein a rim portion holding a tire and a disk portion connected to the rim portion are integrally cast, includes a side wall portion extending from a dropped portion of the rim portion to a bead seat portion of the rim portion and a plurality of recessed portions defined intermittently in the circumferential direction of the wheel on a surface of the side wall portion facing the inside of the tire. By formation of the recessed portions, the weight of the wheel can be decreased, generation of blowholes in a casting process can be prevented and air capacity of the tire can be increased.