| 摘要 |
PURPOSE:To provide a seal mechanism of a damper capable of obtaining a positive sealing property and contributing to the improvement in the productivity by constitut ing the seal mechanism of a ridge part formed on one surface of a main damper body so as to oppose the opening peripheral edge part of an opening part, and a sealing member made of an elastic material resiliently contacting the peripheral edge part by the ride part when the damper is closed. CONSTITUTION:A main damper body 1 is formed by plastics, for example, into the shape of a rectangular plate, and a ridge part 2 of a sectional reverse V-shape is formed across the entire periphery of a quadrilateral part 1. On one side of the main damper body 1 a scroll part 3 is provided, and a support shaft 4 is inserted therethrough. A sealing member 5 is formed into a square shape in correspondence to the shape of the main damper body 1, and is pasted to the main damper body 1 by means of a bonding agent thereby to form a rib part 5a. The main damper body 1 is rotatably mounted on the opening peripheral edge part of a duct 6 through the support edge part of the duct 6 through the support shaft 4. By the rotation of the main damper body 1 in a direction shown by an arrow S, the rib part 5a elastically makes contact with the opening peripheral edge part 6b of the duct 6, and a vent path 6a is closed.
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