| 摘要 |
An access device (1) for providing access between a lower level and an upper level. The device (1) includes a platform member (2), a ladder member (3) and a rotating actuator (4). The platform (2) and the ladder (3) are movable between an access position (FIG. 1) wherein the ladder (3) is positioned downwardly and the platform (2) is horizontal, and, a storage position (FIG. 3), in which the ladder (3) is positioned upwards and the platform (2) is vertical. In a first step, the actuator (4) rotates the ladder through about a 90 DEG angle to an intermediate position (FIG. 2) at which time the ladder (3) engages with the platform (2). Then, in a second step, the ladder (3) and platform (2) cooperatively rotate between the intermediate position (FIG. 2) and the stored position (FIG. 3). |
