초록 ▼

As a rule, wheel-chairs have large(-diameter) drive wheels (3) and small(-diameter) steerable wheels (5), and wheel-chairs for indoor operation have their drive wheels as their rear wheels, while wheel-chairs for outdoor operation have their drive wheels (3) as front wheels. In the wheel-chair accor

As a rule, wheel-chairs have large(-diameter) drive wheels (3) and small(-diameter) steerable wheels (5), and wheel-chairs for indoor operation have their drive wheels as their rear wheels, while wheel-chairs for outdoor operation have their drive wheels (3) as front wheels. In the wheel-chair according to the invention, the seat assembly (6) is mounted for rotation about a vertical axis by means of a supporting column (14) above the chassis (1), such that, depending on the purpose of use of the wheel-chair, the large drive wheels are selectively disposed in the front or rear position with respect to the seat(ing) direction. In this way, the wheel-chair may be used both inddors and outdoors in an optimum manner. Additional positioning alernatives of the seat assembly, e.g. at ±90°relative to the chassis, open to the user new possibilities of utilization. By an automatic switchover of the control (or steering) lever in accordance with the position of the seat assembly, optimum operation of the wheel-chair is obtained.

대표청구항 ▼

An electric wheel-chair comprising: a chassis; at least one first axle having drive wheels, which is connected to the chassis; a pair of second axles which are connected to the chassis, each having a swivel wheel; a seat assembly rotatively mounted on the chassis between the first and second axles,

An electric wheel-chair comprising: a chassis; at least one first axle having drive wheels, which is connected to the chassis; a pair of second axles which are connected to the chassis, each having a swivel wheel; a seat assembly rotatively mounted on the chassis between the first and second axles, having an axis of rotation, the seat assembly having at least two lockable seating positions, including first and second end positions oriented 180°from each other and normal to rotational axes of the axles; a drive unit coupled to each drive wheel for driving that wheel in response to control signals that are routed to assigned signal receipt locations in the drive unit, which control signals are indicative of desired wheel-chair maneuvers to be executed by the drive unit with respect to one of the seating positions; an operating unit coupled to the drive units for generating the control signals; and means coupled to the operating unit and the drive units for rerouting the control signals from the operating unit to the drive unit signal receipt locations, so that the drive units execute the same desired wheel-chair maneuvers when the seat is positioned in at least said first and second end positions.