Patent ID: 8472143

Claim:
A magnetic head suspension comprising a supporting part that is swung in a seek direction parallel to a disk surface directly or indirectly by an actuator, a load bending part that is connected at a proximal end portion to a distal end portion of the supporting part so as to generate a load for pressing a magnetic head slider toward the disk surface, a load beam part that is connected at a proximal end portion to a distal end portion of the load bending part and transmits the load to the magnetic head slider, and a flexure part that is supported by the load beam part and the supporting part, wherein the load beam part includes a plate-like main body portion and paired right and left flange portions, the main body portion having a proximal end portion that is connected to the load bending part and a lower surface that faces the disk surface and to which a flexure substrate of the flexure part is fixed, the paired flange portions extending from both side edges of the main body portion in a suspension width direction toward a direction opposite from the disk surface, wherein each of the right and left side edges of the main body portion includes a proximal end region and a distal end region, the proximal end region being inclined to a suspension longitudinal center line at a first inclination angle so as to come closer to the center line as it advances from the proximal side to the distal side in the suspension longitudinal direction, the distal end region being inclined to the center line at a second inclination angle, which is smaller than the first inclination angle, so as to come closer to the center line as it advances from the proximal side, which is connected to the distal portion of the proximal end region with an inflection point being interposed between them, to the distal side in the suspension longitudinal direction, and wherein, in, a case where a distance in the suspension longitudinal direction between the distal end portion of the supporting part and a dimple provided in the load beam part is represented by “L”, a distance “a” in the suspension longitudinal direction between the distal end portion of the supporting part and the inflection point is set so as to satisfy a condition of 0.78 L≦a≦1.13 L such that a resonant frequency of the magnetic head suspension in a second torsion mode is increased.