| 摘要 |
<p>A vehicle for carrying a standing person forwards, said vehicle having at least one front wheel (1 ) and two rear wheels (2, 3) carried by a frame (4). The front wheel is connected with a handle bar (8) by a steering column (6), which is rotably mounted on the frame (4). Further, the vehicle comprises two pedals (10, 11 ), which are rotably mounted around an axis of rotation in the immediate vicinity of the axis of rotation of the rear wheels (2, 3), in that the pedals (10, 11 ) extend forward towards the front wheel (1 ). Each pedal (10, 11 ) has a means for driving a rear wheel (2, 3) by turning around their axis of rotation in a downwards direction towards or just past a level corresponding to the position of the axles of the wheels (1, 2, 3). Also, the pedals (10, 11 ) have a means for their backwards carrying in the opposite direction of said level. The driving means includes a first belt (12) extending between a fixed spot (16) on the frame (4) in the area between the front wheel (1 ) and the frame (8) and to the front end of the corresponding pedal (10, 11 ) and from there along the bottom side of the pedal (10, 11 ) to a winding axle rotably mounted in the bearing means, the belt being wound around said winding axle. The driving means further includes a clutch between the winding axle and the rear wheels (2, 3), said clutch being adapted to drive the rear wheels (2, 3) around by turning the winding axle in the unwinding direction of the belt and to disengage the rear wheels (2, 3) by turning the winding axle in the opposite direction. The means for backwards carrying is a spring means adapted to constantly subject the belt to a biasing force through the winding axle.</p> |
