摘要 |
The runner comprises a female U-section (5) with two webs (51) which slides longitudinally relative to a male section (3). There is a lock (9) which locks the female section on the male section and an unlocking control (7). The lock has a vertically movable part (93) comprising a locking tab (10) which passes into a window (16) in the female section. The locking tab has at its end inside the female section locking holes (17) which engage notches (37) in the male section. The unlocking control, located outside the sections, displaces the lock movable part and frees the locking tab from the notches. The lock has a fixing tab (91) fixed to the female section, a flexible part (92) and the movable part. The window is in the upper surface (55) of the female section and the notches are in the upper edge of a web (31,31') of the male section. The unlocking control displaces the movable part upwards and bends the flexible part. |