| 摘要 |
PURPOSE:To accurately open and close an air duct area by obliquely supporting both end hinge portions in one direction of a flap by a pin in such a manner as to freely open and close in the closing state. CONSTITUTION:When a rod 4 presses a recess portion 2a of a flap 2, the force of a spring 5 is applied to the flap 2 to be opened. A pin 7 is provided on the flap 2 and supported in a small hole of a hinge portion 6 of a damper case 1. In this arrangement, when the flap 2 opens, shifting of a supporting point caused by opening and closing the flap can be avoided to accurately open and close an air duct area of the damper case 1 where a fluid flows, so that temperature control can be accurately performed. |
