Abstract: An electrically-driven wheelchair is provided with a frame, drive wheels, an operator control panel and a support lever. The operator control panel controls action of the drive wheels. The lower side of the operator control panel is supported to the upper side of the support lever. The support lever is connected to the frame, and supports the operator control panel. The lower side of the support lever is connected to the frame so that the support lever can be rotated in the longitudinal direction and the lateral direction and can be adjustable. The upper side of the support lever is connected to the operator control panel so that the operator control panel can be rocked forward and rearward and leftward and rightward and can be movable. In the support structure of the operator control panel of the invention, not only the arrangement position of the operator control panel at the front and rear sides and the left and right sides but also the height of the operator control panel can be adjusted.

Abstract: In a wheelchair, a rear wheel part with a pair of rear wheels is assembled to the rear side of a frame in detachable state. The frame is constituted in foldable state. The rear wheel part and the rear side of the frame are provided with a locking member and a receiving member which can be coupled with each other and are arranged corresponding to these. The receiving member is provided with a concave locking surface at the side remote from the locking member. The locking member is provided with an insertion recess in which the receiving member can be inserted, and with a hook which can lock a locking surface of the receiving member inserted in the insertion recess. In the wheelchair, the rear wheel part can be simply assembled to or detached from the frame by the operation of the hook. Also the frame can be folded. Therefore even the wheelchair of heavy weight can be easily housed in a vehicle with a narrow housing space. Also the wheelchair can be simply assembled by the operation of the hook.

Abstract: A brake system for a wheelchair comprises a base plate fixed to a frame of the wheelchair and a swing lever pivotally mounted to the base plate and provided with a brake member engagable with a circumferential surface of a wheel of the wheelchair. A toggle joint mechanism composed of two pivotally interconnected links is pivotally mounted to the base plate and connected to the swing lever to move the swing lever between an extended braking position and a retracted inoperative position. An operating lever is pivotally mounted to the pivot which interconnects the two links of the toggle joint mechanism. The operating lever has cam surfaces engageable with the two links to depress the latter when the operating lever is moved in either of two directions by pushing it or pulling it. Such action drives the swing lever into braking engagement with the wheel. A biasing spring is provided to urge the links of the toggle mechanism towards retracted position.