| 摘要 |
PURPOSE: A fan having angle-adjusting blades is provided to improve productivity and to reduce the cost of material by making angle adjusting of blades possible. CONSTITUTION: A fan includes a hub(32) forming the central part of the fan and separable blades(40) mounted on the outer circumference of the hub. Many female mounting parts(34) are formed on the outer circumference of the hub, and the blades include male mounting parts(42) having a shape corresponding to the female mounting parts. The male mounting parts are combined with the female mounting parts. The female mounting part consists of a perforated hole having many female mounting ribs(38) formed along the inner circumference. The male mounting part consists of a cylinder having many male mounting ribs(46) formed along the outer circumference.
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