| 摘要 |
A device for interlocking of tubes telescopically slidable in each other comprises two levers (12) connected to the outer tube (10) and rotatable around mutual supporting points (13) on each side of the inner tube (11). The levers (12) comprise a first lever arm (16) provided with brake means (18) and actuated by a spring (19) which causes the brake means to engage the inner tube, and a second lever arm (17) which is manually actuatable to release the brake means against the action of the spring (19). |
