Patent ID: 8427789
Filing Date: 2013-04-23
Classification: G11B

Abstract:
1. A magnetic head suspension comprising: a load bending portion generating a load for pressing a magnetic head slider toward a disk surface, the load bending portion comprising an elastically-deformable elastic plate; a load beam portion transmitting the load to the magnetic head slider; a supporting portion supporting the load beam portion through the load bending portion and including a concave portion which is defined by a pair of supporting pieces extending from opposite sides of the supporting portion in the widthwise direction to a tip-end side of the suspension and which is opened toward the tip-end side of the suspension; a flexure portion connected to the load beam portion and supporting the magnetic head slider; and a balance mass member including a center portion which is connected to the elastic plate, a tip-end portion which is positioned on a tip-end side of the center portion in a longitudinal direction of the magnetic head suspension and which is connected to a base-end portion of the load beam portion, and a base-end portion of the balance mass member which is positioned on a base-end side of the center portion in the longitudinal direction of the magnetic head suspension, wherein the elastic plate has first and second ends in a widthwise direction of the suspension respectively connected to the pair of supporting pieces, wherein the elastic plate includes first and second connected areas which are respectively connected to the pair of supporting pieces, and a center area extending between the first and second connected areas, and wherein the center area includes a center connected portion to which the balance mass member is connected, a first extending portion extending between the center connected portion and the first connected area, and a second extending portion extending between the center connected portion and the second connected area, wherein each of the first and second extending portions has at both a tip-end side and a base-end side outer curved portions having a width gradually increased with decreasing distance to the corresponding connected area and inner curved portions having a width gradually increased with decreasing distance to the center connected portion.