Suncall Corporation

Yasuo Fujimoto

Satoru Takasugi

Kenji Mashimo

Eiji Okuda

Hiroki Matsunaga

Yuusuke Kamiya

In a magnetic head suspension, a main body region of a flexure substrate is fixed to a load beam part at plural welding points including F/L first and second welding points respectively arranged on distal and proximal sides of a position of a LB bending that reduces a gain of a torsion vibration of the load beam part. In a case where a length of a flat region in the suspension longitudinal direction is represented by F, the flat region extending between an end position on the distal side of the bending at the LB bending position and the F/L first welding point is represented by F, and a length between the F/L first welding point and a supporting arm welding point is represented by D, a condition of 0.02≤F/D≤0.05 is met.

Magnetic head suspension

Assuming that a length in the suspension longitudinal direction between a distal edge of a supporting part and a dimple is represented by 'L', plural load beam part welding points at which spot welding are made for fixing a load beam part fixed region of a flexure base plate to a plate-like main body portion of a load beam part include paired right and left main welding points that are arranged symmetrically to each other with respect to a suspension longitudinal center line and that are disposed within a center region away from the distal edge of the supporting part by more than or equal to 0.4*L and less than or equal to 0.6*L.

A magnetic head suspension includes a supporting part, a load bending part, a load beam part and a flexure part, and is configured so that a condition of L*L and*L&#x2266;Lis satisfied assuming that a length of the leaf spring in a suspension lengthwise direction that extends from a distal edge of the supporting part to a proximal end portion of the load beam part is represented by 'L', a distance in the suspension lengthwise direction from the distal edge of the supporting part to the proximal side-bending line is represented by 'Land a distance in the suspension lengthwise direction from the distal edge of the supporting part to the distal side-bending line is represented by &#x201c;L

Magnetic head suspension and manufacturing method thereof

Each of side edges of a main body portion of a load beam part includes a proximal end region inclined at a first inclination angle so as to come closer to a suspension longitudinal center line as it goes from proximal to distal sides, and a distal end region inclined at a second inclination angle smaller than the first inclination angle so as to come closer to the center line as it goes from a proximal side connected via an inflection point to a distal end of the proximal end region to a distal side.

Magnetic head suspension having a load beam part with an inflection point

A load beam part, which includes a plate-like main body portion facing a disk surface and paired flange portions bent from both side edges of the main body portion in a suspension width direction so as to extend toward a direction opposite from the disk surface, is bent at first and second bending lines in such a convex manner as to project in the direction toward the disk surface, the first bending line being positioned between the proximal end portion of the load beam part and the dimple in the suspension longitudinal direction and extending along the suspension width direction, the second bending line being positioned between the first bending line and the dimple in the suspension longitudinal direction and extending along the suspension width direction.

Magnetic head suspension having a load beam part with bending lines

In a magnetic head suspension according to the present invention, each of paired right and left connecting beams that are positioned on both sides of an open section, with which paired piezoelectric elements are at least partially overlapped in a plan view, in a suspension width direction and connect a proximal end section that is directly or indirectly connected to a main actuator and a distal end section to which the load bending part is connected includes proximal-side and distal-side beams. The distal-side beam is inclined with respect to the proximal-side beam in a plan view such that a connection point between the proximal-side and distal-side beams is located closer to a suspension longitudinal center line relative to a virtual line connecting the proximal end of the proximal-side beam and the distal end of the distal-side beam.

Magnetic head suspension with optimized inclination angle

Magnetic head suspension having a supporting part with connecting beams

Provided that a distance between a distal edge of a supporting part and a dimple is represented by L, a load beam part is bent around a first bending line within a center region away from the distal edge of the supporting part by more than or equal to 0.4*Land less than or equal to 0.6*Land also around a second bending line positioned closer to a proximal side in the suspension longitudinal direction than the first bending line. Paired leaf springs are bent around a third bending line. The second bending line is positioned within a proximal region within 0.22*Lfrom the distal edge of the supporting part, and no paired flange portions exist at an area at which the second bending line is positioned.

Suspension for supporting a magnetic head slider

Magnetic head suspension having a supporting part with an edge formed into a concave shape

The present invention provides a magnetic head suspension, wherein a supporting portion such as an arm or base plate includes a pair of supporting pieces extending from its opposite sides 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, there is provided an elastically-deformable elastic plate which 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, the member forming the load beam portion is connected to the elastic plate, and the elastic plate forms the load bending portion.

Magnetic head suspension with balance mass member

Magnetic head suspensions having a load bending portion, a load beam portion, and a balance mass member

Magnetic head suspension having a support plate connected to the lower surface of the supporting part

A load beam part main body portion's side edges include a proximal end region inclined at a first angle and a distal end region inclined at a smaller second angle. Where 'L' is a distance in a suspension longitudinal direction between a supporting part's distal end portion and a dimple, a distance 'a' in the same direction from the supporting part's distal end portion until an inflection point between the proximal end region and the distal end region satisfies 0.44L&#x2266;a&#x2266;0.78L. A support plate's side edges fixed to the load beam part main body portion's lower surface is located, in the suspension width direction, inward from a virtual line connecting the proximal end region's proximal end and the distal end region's distal end and outward from the proximal end region and the distal end region, and extends, in the suspension longitudinal direction, across the inflection point.

A flexure metal plate includes distal and proximal end side-center-support plate forming regions that are positioned on distal and proximal sides within an open section. To a distal end section of a supporting part that is positioned on a distal side of the open section, first and second-distal side-metal plates are fixed so as to be positioned on an outer side of the distal end side-center-support plate forming region in a width direction, and to a proximal end section of the supporting part that is positioned on a proximal side of the open section, first and second-proximal side-metal plates are fixed so as to be positioned on an outer side of the proximal end side-center-support plate forming region in the width direction. The first and second-distal side-metal plates form a distal end side-support plate in cooperation with the distal end side-center-support plate forming region.

Magnetic head suspension and manufacturing method thereof with pair of piezoelectric adjusters

First and second piezoelectric element overlapped portions of an insulating layer of a flexure part is formed with first and second connecting openings, respectively. There are provided on an upper surface of the insulating layer, first and second lower conductive adhesive agents that electrically connect lower electrode layers of first and second piezoelectric elements to a voltage supply wiring through the first and second connecting openings, and a surrounding insulative adhesive agent that is arranged so as to surround the first and second lower conductive adhesive agents in a plan view.

Growing community of inventors

Kyoto-fu, Japan

Yasuo Fujimoto