| 摘要 |
<p>A damper blade (12) is rotatably mounted in an air duct (10) by means of spindles (14) secured to the blade. Fastening means comprising spring clip devices (16) are attached to the blade (12) edges before insertion of the blade into the duct (10), and the spindles (14) become secure to the blade upon insertion through the duct walls and into operative engagement with the clips. The clips (16) each comprise convergent base (28) and retaining (36) portions between which the blade (12) and inserted spindle (14) are gripped. A non-circular opening (38) in a web (30) connecting the base and retaining portions co-operates with a non-circular portion of the spindle (14) to prevent rotation of the clip (16) and the blade (12) relative to the spindle. <IMAGE></p> |
