Patent ID: 7652851
Filing Date: 2010-01-26
Classification: G11B

Abstract:
1. A head support device of self-balancing type arranged to be used with a recording medium, said head support device being operable to support a head accessing said recording medium, said head support device comprising: a head support arm having a center line and a rotation axis about which said head support arm is rotatable in a radial direction of the recording medium, said head support device being rotatable in a direction perpendicular to the recording medium about a line substantially perpendicular to the rotation axis and the center line, the head support arm including a bearing including a flange at one end thereof, a thread portion formed at another end thereof, and a cylinder portion provided between the flange and the thread portion; a head slider provided at the one end of the arm, the head slider being arranged to have said head fixed thereto via a gimbal mechanism; a voice coil holder fixed to the head support arm, the voice coil holder having a voice coil provided at the voice coil holder, the voice coil rotating the head support arm in the radial direction of the recording medium about the rotation axis; a reinforcing plate having a shape substantially identical to a shape of the cramp, the reinforcing plate being fixed to a predetermined position of the cramp at a side opposite to a projecting direction of the pivots; a collar fitting the cylinder portion and contacting the reinforcing plate; and a nut fitting the thread portion, wherein the flange and the nut sandwich and cramp the head support arm having the reinforcing plate fixed thereto, wherein the head support arm is supported rotatably about a line provided between contact points at which the pivots contact the flange and in a direction perpendicular to the recording medium, and wherein the spring as an elastic member generates an urging force toward the recording medium and is provided unitarily with the head support arm.