Patent ID: 8248735

Claim:
A magnetic head suspension comprising a load bending part that generates a load for pressing a magnetic head slider toward a disk surface, a load beam part that transmits the load to the magnetic head slider, a supporting part that supports the load beam part via the load bending part and is swung about a swing center directly or indirectly by a main actuator, a flexure part that is supported by the load beam part and the supporting part while supporting the magnetic head slider, and paired right and left piezoelectric elements that are attached to the supporting part so as to be symmetrical with each other with respect to a suspension longitudinal center line and have expansion and contraction directions different from each other in order to enable micro motion of the magnetic head slider in a seek direction, each of the paired piezoelectric elements including a piezoelectric main body, a lower electrode layer that is disposed on a first side of the piezoelectric main body that faces the disk surface and an upper electrode layer that is disposed on a second side of the piezoelectric main body that is opposite from the disk surface, wherein the supporting part includes a proximal end section that is directly or indirectly connected to the main actuator, a distal end section to which the load bending part is connected, an open section that is positioned between the proximal end section and the distal end section in a suspension longitudinal direction, and paired right and left connecting beams that are positioned on both sides of the open section in a suspension width direction and connect the proximal end section and the distal end section, wherein each of the paired piezoelectric elements is disposed within the open section so that at least a part of a distal-side end surface of each of the paired piezoelectric elements faces a distal-side wall surface of the distal end section of the supporting part that faces toward the proximal side in the suspension longitudinal direction forming a distal-side gap between the distal-side end surface and the distal-side wall surface and at least a part of a proximal-side end surface of each of the paired piezoelectric elements faces a proximal-side wall surface of the proximal end section of the supporting part that faces toward the distal side in the suspension longitudinal direction forming a proximal-side gap between the proximal-side end surface and the proximal-side wall surface in a state where both of the upper and lower electrode layers do not face the supporting part and any rigid members that are fixed to the supporting part, and wherein each of the paired piezoelectric elements is fixed to the supporting part by a distal-side insulative adhesive agent and a proximal-side insulative adhesive agent that fill the distal-side gap and the proximal-side gap, respectively.