| 摘要 |
<p>A locking device interacting with a drive member and including an inner tube (1) and an outer tube (3); where the inner tube (1) has a first free end that projects from, and is axially displaceable from, a first end of the outer tube; where there is a locking member (4) on the other end of the inner tube (1), said locking member (4) providing the means whereby the inner tube (1) and the outer tube (3) can be releasably locked in various axial positions relative to each other; where the locking member (4) includes a tubular locking sleeve (9) that is slotted by at least one axially aligned slot (13) - said slot including a wedge-shaped cut-out (113) with essentially tangentially aligned wedge surfaces (16) - and a wedge (14) that includes wedge surfaces (15), said wedge surfaces being, when acted upon by a drive member (41) that includes a thread groove (42), displaceable along and relative to interacting wedge surfaces (16) of the locking sleeve (9), such displacement pressing the locking sleeve (9) against the outer tube, the inner tube (1) and the outer tube (3) being thereby axially locked relative to each other, said displacement occurring through the drive member (41) being rotated around an axis that is essentially parallel with the longitudinal axis of the inner tube (1), the thread groove (42) thereby interacting with a thread (35); and, where the rotation of the drive member (41) occurs via a torsion rod (7) when the torsion rod (7) is rotated, relative to the inner tube (1), around a longitudinal axis that is essentially parallel with the longitudinal axis of the inner tube (1).</p> |
