Patent ID: 7830048
Filing Date: 2010-11-09
Classification: H02N

Abstract:
1. A micro motor, comprising: a hub configured as a stationary member having a cylindrical form and having a top edge projected outwardly to form a top lid; an inner ring, the inner ring being hollow and annular, and located around an outer periphery of the top lid and having a hole diameter slightly greater than a maximal outer diameter of the top lid; a rib structure, the rib structure being hollow and annular, and fixed to a bottom portion of the inner ring and located beneath the top lid to have a plurality of bumps disposed between the rib structure and the top lid, having a diameter of an inner hole greater than an outer diameter of the hub but smaller than the hole diameter of the inner ring and the maximal outer diameter of the top lid so that the top lid is positioned above the rib structure as a stopper and a plurality of protruded limiting parts are disposed between the wall of the inner hole of the rib structure and an outer periphery of the hub; an outer ring, the outer ring being hollow and annular, and having a hole diameter greater than a maximal outer diameter of the inner ring; and at least two micro actuators connected between the inner ring and the outer ring.