WHEEL AND A WHEELCHAIR USING THE SAME

Provided is a wheel which is inexpensive, light, and sufficiently rigid. A wheel includes an annular rim to which a tire is externally fitted, a hub which is arranged at a center portion of the rim and to which an axle is connected, and a disk which is attached with the rim at a periphery portion and which covers one side of the wheel . The disk includes a planar portion and a first rib provided at a surface of one side of the planar portion and extending in the radial direction. The planar portion is provided with a first groove at a surface of the other side at a position corresponding to the first rib