Disk drive suspension and manufacturing method therefor
AssigneeNHK Spring Co., Ltd.
InventorsMasao HANYA, Tatsuhiro Kin, Isamu Kuchiwaki
Life of this patent
Estimating the term…
Abstract
An element accommodation portion is formed in an electrically conductive plate member which constitutes a part of a suspension. A microactuator element comprising a piezoelectric element is located in the element accommodation portion. An electrically conductive resin member is disposed in a region covering junctions for electrically connecting the conductive plate member and the microactuator element. A pit is formed in the junction of the conductive plate member by partial-etching. A part of the conductive resin member is in the pit. A part of an outer peripheral edge of the conductive resin member is located inside an edge of the pit. The conductive resin member is covered by a cover layer.
Claims16
A disk drive suspension comprising:
- a base section secured to an arm of a carriage of a disk drive;
- a load beam on which a slider of a magnetic head is located;
- and
- a microactuator mounting section between the base section and the load beam,
- the microactuator mounting section comprising
- an electrically conductive plate member comprising a stationary part secured to the base section, a movable part secured to the load beam, and an element accommodation portion, and
- a microactuator element in the element accommodation portion,
- the conductive plate member being formed with a pit in a junction thereof for electrically connecting the microactuator element and the conductive plate member,
- an electrically conductive resin member for electrically connecting the microactuator element and the conductive plate member being disposed in a region covering the junction, a part of the conductive resin member being cured in the pit.
A manufacturing method for a disk drive suspension which comprises an electrically conductive plate member comprising an element accommodation portion, a microactuator element in the element accommodation portion, and a junction which electrically connects the conductive plate member and the microactuator element, comprising:
- forming a pit in the junction of the conductive plate member by partial-etching;
- locating the microactuator element in the element accommodation portion;
- securing the microactuator element to the conductive plate member with an adhesive;
- introducing an uncured conductive resin member to a region including the junction and causing incursion of a part of the conductive resin member into the pit;
- curing the conductive resin member;
- coating an uncured resin on the conductive resin member, thereby forming a cover layer;
- defining an end of the cover layer by means of an edge of the pit;
- and
- curing the cover layer.
Dependencies are inferred from the claim text.