| 摘要 |
The locking mechanism has an outer portion (11), an inner portion and a clamping element (15'). The outer portion and the inner portion are displaced relative to each other in a clamping direction and in release direction (L) that is opposite to the clamping direction. A spreading element (14) is acted against the clamping element, particularly for moving the clamping element away from the telescopic arm, when the outer portion and the inner portion are moved relative to each other in the release direction. The clamping portion is pivoted at the locking mechanism in freely movable manner. |
