| 摘要 |
An access device (1), adapted to provide access between a substrate surface (2) and an elevated surface (3). The device (1) includes a mounting (4), for securement of said device (1) substantially atop said elevated surface (3), a first ladder member (5), a first end of which is pivotally attached to said mounting (4), a second ladder member (6), a first end (12) of which is pivotally attached to a second end (11) of said first ladder member (5), at an articulation joint, drive means (7), operatively connected between said mounting (4) and said first ladder member (5), to control the movement of said first ladder member (5) between an access position and a storage position, at least one guide arm (8), operatively connected between said mounting (4) and said articulation joint (18), to guide the movement of said second ladder member (6) as said drive means (7) moves said first ladder member (5). User operation of said drive means (7) controls the operation of said access device (1) between an access position and a storage position. In the access position, each of said first (5) and second (6) ladder members are substantially coaligned and extend substantially outwardly and downwardly from said elevated surface (3). In the storage position, each of said first (5) and second (6) ladder members are retracted in a substantially vertically disposed manner substantially atop said mounting (4). |
