| 摘要 |
The door drive is designed so that, with the door wing closed, self-locking occurs approximately. A lever (4) projects from the rotary column (5) and is connected to a link (1) in an articulated manner. The link (1) is connected movably via an axle pin (10) to a connection piece (6). This is moved by a pneumatic drive unit (7, 11) via a piston rod (15). Since, when the door wing is in the closed state, the angle ( beta ) between the link (1) and lever (4) is a right or acute angle, a high closing pressure can be generated on the door wing. <IMAGE> |
