US Patent 10413460 Wheelchair

A wheelchair is provided which includes link rods that intersect each other in an X shape, and are pivotably coupled to each other by a pivot shaft. The link rods include a rod central part, and rod upper and lower parts. The rod central parts hold the pivot shaft. The rod upper and lower parts and slant from first and second inclined parts on the both ends of the rod central part in opposite directions with respect to the rod central part. When the X-link portion is folded, the rod central parts overlap each other and are aligned in one straight line in the vertical orientation, and frame accommodation space portions which can accommodate the middle frame portions are provided on the both sides of the rod central parts.