Actuating structure for rotation apparatus

Abstract

An actuating structure for a rotation apparatus such as a fan. The actuating structure has a spindle passing through a coil. The coil is installed in the fan to generate a magnetic field between the coil and a permanent magnet disposed within the fan, so as to cause rotation of the fan. No bearing is required or installed between the spindle and the coil, while two ends of the spindle are rotatably fixed within the actuating structure. Therefore, the area for installing the coil is increased, and the area for the silicon steel of the coil is enlarged. Therefore, the magnetic field generated thereby is increased to increase the rotation torque of the fan. The rotation of the fan is thus optimized.

1 . An actuating structure for a rotation apparatus, comprising: 
 a hollow shell, covered by a lid thereon;    a coil, connected to a circuit board, the coil and the circuit board being installed within the shell;    a fan, installed within the shell, wherein the fan includes a hollow capping member capping a spindle, the spindle passing through the coil to dispose the coil within the capping member, the fan further comprising a circular permanent magnet within the capping member and a plurality of blades extending radially from an exterior surface of the capping member; and    the spindle being rotatablly fixed between the lid and a bottom surface of the shell.    
   
   
       2 . The actuating structure according to  claim 1 , wherein the shell includes a round chamber therein, the chamber includes a connecting seat at a bottom thereof, a snapping hole at a center of the connecting seat, and the lid includes a snapping hole at a center thereof, such that two ends of the spindle are pressed into the snapping holes.