| 摘要 |
The device has a rectangular housing (2) defining a ventilation opening controlled by flaps (5) pivotally movable about hinge axes (6) by means of a drive device (not shown). The flaps (5) each consist of an elongated, flat, extruded hollow-section body (102) of plastics material having a rear edge reinforcing tube (105) with a flange extension (106) at the bottom and an inserted reinforcing section (108) at its underside with two added bearing blocks (111) for a pivot drive. The pivot blocks (111) are disposed close to the ends of the hollow-section body (102) and are connected at their front end, to the reinforcing section (108) and at their rear end to the flange extension (106) to form a reinforced skeleton for the flap. |
