Patent ID: 8270121

Claim:
A magnetic head suspension comprising: a load bending portion generating a load for pressing a magnetic head slider toward a disk surface, wherein the load bending portion comprises an elastically-deformable elastic plate; a load beam portion transmitting the load to the magnetic head slider, wherein the load beam portion is connected to the elastic plate; a supporting portion supporting the load beam portion through the load bending portion, wherein the supporting portion includes 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 a concave portion which is defined by the pair of supporting pieces and 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 restraint plate connected to the supporting portion so as to be positioned on a side of the load beam portion opposite from the elastic plate in a direction orthogonal to the disk surface with the load beam portion sandwiched between the restraint plate and the elastic plate, wherein the elastic plate is connected to the pair of supporting pieces at a first end and a second end in the widthwise direction of the magnetic head suspension, 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 load beam portion 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, the second extending portion being symmetrical with respect to the first extending portion with a longitudinal center line of the magnetic head suspension as a reference, wherein the restraint plate has one or more protrusion portions which contact the load beam portion on a load bending center line of the first and second extending portions along the widthwise direction of the suspension, and wherein the one or more protrusion portions are placed to be symmetrical with the longitudinal center line as a reference.