| 摘要 |
<p>A telescopic device with two telescopic members (1, 2) comprises a control means with a flexible transmission element (4) for bringing the telescopic members in relative movement. The transmission element (10) is in engagement with a driving wheel (5), which is fixed relative to one (1) of the telescopic members in that the driving wheel is journalled at a base part (3) attached to said one telescopic member and from which the transmission element extends in a loop, which is arranged about a diverting wheel (8) arranged within a space limited by the telescopic members. The diverting wheel (8) is likewise fastened relative to the first telescopic member (1). The second telescopic member (2) is connected to a part (10) of the transmission element which extends between the driving member (5) and the diverting member (8), whereby thus a rotation of the driving member in a first direction causes contraction of the telescopic members while a rotation of the driving wheel in a second direction causes extension of the telescopic members.</p> |
