| 摘要 |
A ramp assembly for facilitating wheel chair access to a vehicle comprises a frame 10 and a ramp member 18 pivotably mounted relative to the frame for movement between a first, retracted position and a second,outwardly extending position, the ramp member being pivotable about an axis (22, Figure 2b) which is spaced inwardly of an edge of the ramp member and the edge lying adjacent an edge region of the frame when the ramp member is retracted. Preferably a fixed support member of tapering thickness and having an upwardly facing surface 29 lies within the frame, the surface 30 of the ramp member, which is also tapering in thickness, lying face to face with the surface 29 when the ramp member is retracted and the two surfaces lying in a line when the ramp member extends outwardly. Preferably the ramp member is pivotably moved by a rack member 35 which engages a pinnion 21, operation of an electric motor 40 causing reciprocation of the rack member 35. Spring means 43,44 may be loaded when the ramp member is in at last one of its two positions. Operation of the motor may be determined by an electronic control unit incorporating the motor. |
