| 摘要 |
The invention relates to a form closure, used for locking unworked connecting bars of concrete forming boards. The form closure is produced from a plate which has an opening for guiding the connecting bars through the form closure, and the form closure can be locked to the unworked connecting bar by transverse movement. The form closure (1) according to the invention is characterised in that the opening (3) located in it has the form of an elongated hole, and in that its width is at least exactly the same size as the thickness of the unworked connecting bar (2). Two opposite edges (4, 5) of the plate are curved towards the opening (13) in such a way that, in the vicinity of the opening at a certain distance therefrom, a wedge-shaped gap (6) is formed, which runs in the direction of the opening and the width of which in the region of one end (7) of the opening (3) is of such a size that the connecting bar (2) can be pushed through the form closure (1). In contrast, the width of the wedge-shaped gap (6) in the region of the other end (8) is smaller than the thickness of the connecting bar (2), so that the edges (4, 5) of the wedge-shaped gap are wedged around the unworked connecting bar by the transverse movement of the form closure, as a result of which the form closure is locked to the connecting bar. <IMAGE> |
