| 摘要 |
PURPOSE:To surely operate a fan at a low cost and enable air in a room to be circulated, by both rotating and swinging rotary blades by a single motor. CONSTITUTION:A main gear 6 driving a clutch gear 9 is provided in the upper end of a rotary shaft 5 of a motor M, and the clutch gear 9 is enabled to be intermittently connected with a counter shaft 8, rotating a worm gear 17, by a clutch lever 12. Then a crank rod 18 is provided in the worm gear 17 so as to vertically move a boss 19, provided in the periphery of a hanging pipe 4, by a link rod 21. A bracket 25 rotatably provided in this boss 19 is linked to rotary blades 1 by tractive levers 27, causing the rotary blades 1 to swing so as to enable the blowing direction of air to be automatically changed by connecting the clutch gear by the clutch lever 12 when necessary. A driving part, being coated with a shade 31 and applying a color, can take also an effect of decorative design. |
