| 摘要 |
The invention concerns a scissor-type opening linkage adjusted by a motor, and a process according to which this scissor-type linkage can open and close flaps, fanlights or ventilators. The object of the invention is to provide a compact scissor-type opening linkage which is multi-purpose yet operates with precision. This object is achieved in that two scissor-type linkage arms (10, 20, 20a, 20b, 10) are connected to each other in an articulated manner (31a, 31b) and an actuator (40, 42) is rigidly disposed in or on one of the linkage arms. The actuator comprises a spindle rod (41) which applies an opening force between the two linkage arms (10, 20, 20a, 20b, 10) via one or two coupling rods (30, 30a, 30b). In the closed state the coupling rod(s) (30a, 30b, 30) is/are completely covered by the linkage arm. A scissor-type linkage of this nature can be disposed with its end regions which are not connected in an articulated manner to the other linkage section on the frame, base, flap or wing so as to tilt or pivot. |
