| 摘要 |
The nut (11) comprises an essentially rectangular block with a short side essentially corresponding to the width of the outer groove part in a T-shaped groove, this part being defined by side flanges in a profile. The inner groove part is widened relative to the outer groove part. The long side of the block essentially corresponds to the width of the inner groove part. Twisting the nut enables it to be moved in the cross-direction and urged into contact with the bottom side of the side flanges. The nut has an essentially square seat (20) arranged concentrically relative to the threaded hole (19) in the nut, the seat width being essentially the same as that of the short side of the block. The seat is designed to cooperate with the side edges of the outer groove part. |
