| 摘要 |
A drive mechanism is described which enables an up-and-over door (3) guided on both sides in two places (6,7) in vertical rails (4) and horizontal rails (5) to be opened and closed by means of just one driving motor (18). In order that the exclusively horizontally acting driving power provided by the driving motor (18) may be converted, when the door (3) is fully open, into a force having a vertical component, a four-pivot linkage (20), comprising links 21, 22, 23, 24 is secured to the door (3). The link (23) is prolonged by an arm (25) (Fig. 4) and articulated by way of a thrust rod (28) to a slide (12). The same is moved by way of a telescopic drive rod (29). Since only a single driving motor (18) is needed to move the door (3) horizontally and vertically, costs are reduced. <IMAGE> |
