Patent ID: 7669623

Claim:
An elastic wheel comprising a rim for mounting a tire extending in a circumferential direction, a disk to be fixed to an axle, and a connecting apparatus for connecting elastically between the rim and the disk, the connecting apparatus comprising a pair of axially spaced internal flanges each provided on an inner circumferential side of the rim and protruding therefrom radially inwardly and extending in the circumferential direction, 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 both sides and extending in the circumferential direction, 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 an axially inner side with at least one first groove extending in the circumferential direction, the external flange is provided on both sides with at least one second groove extending in the circumferential direction so as to face the first groove of each internal flange, an axial end of each rubber damper is inserted into the first groove of the internal flange and an opposite axial end is inserted into the second groove of the external flange, and a radial gap is provided between the external flange and the inner circumference side of the rim in the space.