| 摘要 |
The invention relates to a telescopic extension comprising at least one pair of rails (1; 2) consisting of an outer rail (3; 5) defining a groove and an inner rail (4; 6) that can longitudinally move in relation to the outer rail (3; 5) and is guided in the groove. An open gap (10) is located between a region (8) of the outer rail (3; 5) forming a lateral wall of the groove, and the inner rail (4; 6). A channel (16) extending below the gap (10) is connected to one of the rails (3). |
