| 摘要 |
The holding surface (3) has two recesses (6,7) spaced from the narrow sides (4,5) and from each other (6,7) and made up of two walls extending in the length of the cover strip (1). The recess wall (6a,7a) nearest the respective narrow end (4,5) is at angle ( alpha ) up to 90 deg towards the nearest narrow side (4,5) in relation to the plane of the closing holding surface. The recesses come in groove, channel or notch shape and the cover strip (1) should be angular in section to give two legs of dissimilar length via a radiused transition angle. The cover strip (1) can also form a dovetail section or C section and has a third recess (8) spaced from the other recesses (6,7) in the center part of the holding surface. A tongued (15,16) holding element (10) baseplate (11) has top and bottom edges (12,13) and is fixed to the setdown surface via a fixer hole (14). |
