| 摘要 |
An electric fan apparatus having a rotatable hub member provided in the central portion thereof and surrounded with a bearing housing through a plurality of bearings; a vertical main shaft connected to a motor shaft via a coupling; a rotary member connected to the hub member; a plurality of fan spindles equally disposed on the rotary member and supported by bearing housings; a base member supporting the apparatus; a column vertically fixed on the central portion of the base; a stem member movably inserted into the column; a tilting device contected between the bottom plate of the housing and the top end portion of the stem member; cooperating elements between the coupling fixedly inserted to the motor shaft and a worm wheel shaft arranged in the housing; a clutch mechanism selectively engaging between the worm wheel shaft and a crank device for angularly moving the rotary member; and connecting elements transmitting power between the main shaft and a plurality of the fan spindles capable of being mounted with a plurality of fan impellers for sending the wind to all directions, e.g. 360 degrees.
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