Suspension assembly with etched region and disk drive with the same

Patent metadata

Field	Value
Publication number	US-11430473-B2
Application number	US-202117376065-A
Country	US
Kind code	B2
Filing date	Jul 14, 2021
Priority date	Nov 16, 2020
Publication date	Aug 30, 2022
Grant date	Aug 30, 2022

Abstract

According to one embodiment, a suspension assembly includes a support plate, a wiring member on the support plate, and a magnetic head mounted on the wiring member. The magnetic head includes a head slider and connection pads provided at an outflow end of the head slider and electrically connected to the wiring lines. The wiring member includes a head installation region in which the magnetic head is mounted, and an etched region which is at least partly located in the head installation region and is opposed to an end portion of the head slider at the inflow end thereof to form a gap between the end portion and the etched region.

First claim

What is claimed is:

1. A suspension assembly comprising:
a support plate having a distal end portion and a proximal end portion;
a wiring member on the support plate, comprising a metal plate, a first insulating layer on the metal plate, a conductive layer on the first insulating layer and forming wiring lines and connection pads, and a second insulating layer on the conductive layer and the first insulating layer; and
a magnetic head mounted on the wiring member, and comprising a head slider having an outflow end and an inflow end, wherein the outflow end is located closer to the distal end portion of the support plate than the inflow end and the inflow end is located closer to the proximal end portion of the support plate than the outflow end, the magnetic head further comprising a plurality of connection pads provided at the outflow end and electrically connected to the wiring lines, wherein
the wiring member includes a head installation region in which the magnetic head is mounted, and an etched region which is at least partly located in the head installation region and is opposed to an end portion of the head slider at the inflow end thereof to form a gap between the end portion and the etched region.

2. The suspension assembly of claim 1 , wherein
the wiring member comprises a tongue portion supported displaceably with respect to the support plate and constituting the head installation region, and the support plate includes a convex portion contacting the head slider via the tongue portion and the wiring member, and
the etched region is located closer to the inflow end than the convex portion.

3. The suspension assembly of claim 2 , wherein the wiring member includes a through hole penetrating the second insulating layer and the first insulating layer and located between the outflow end and the convex portion, and the magnetic head is bonded to the metal plate by an adhesive filling the through hole.

4. The suspension assembly of claim 1 , wherein the etched region includes a first concave portion formed in the first insulating layer, and a second concave portion formed in the second insulating layer and overlapping the first concave portion.

5. The suspension assembly of claim 1 , wherein the wiring member comprises a support post provided in the head installation region and supporting another end portion of the head slider at the outflow end thereof.

6. A disk drive comprising:
a disk-shaped recording medium; and
a suspension assembly which comprises:
a support plate having a distal end portion and a proximal end portion;
a wiring member on the support plate, comprising a metal plate, a first insulating layer on the metal plate, a conductive layer on the first insulating layer and forming wiring lines and connection pads, and a second insulating layer on the conductive layer and the first insulating layer; and
a magnetic head mounted on the wiring member, and comprising a head slider having an outflow end and an inflow end, wherein the outflow end is located closer to the distal end portion of the support plate than the inflow end and the inflow end is located closer to the proximal end portion of the support plate than the outflow end, the magnetic head further comprising a plurality of connection pads provided at the outflow end and electrically connected to the wiring lines, wherein
the wiring member includes a head installation region in which the magnetic head is mounted, and an etched region which is at least partly located in the head installation region and is opposed to an end portion of the head slider at the inflow end thereof to form a gap between the end portion and the etched region.

7. The disk drive of claim 6 , wherein
the wiring member comprises a tongue portion supported displaceably with respect to the support plate and constituting the head installation region, and the support plate includes a convex portion contacting the head slider via the tongue portion and the wiring member, and
the etched region is located closer to the inflow end than the convex portion.

8. The disk drive of claim 7 , wherein the wiring member includes a through hole penetrating the second insulating layer and the first insulating layer and located between the outflow end and the convex portion, and the magnetic head is bonded to the metal plate by an adhesive filling the through hole.

9. The disk drive of claim 6 , wherein the etched region includes a first concave portion formed in the first insulating layer, and a second concave portion formed in the second insulating layer and overlapping the first concave portion.

10. The disk drive of claim 6 , wherein the wiring member comprises a support post provided in the head installation region and supporting another end portion of the head slider at the outflow end thereof.

Assignees

• Toshiba Kk
• Toshiba Electronic Devices & Storage Corp

Inventors

• Aoki Kenichiro

Classifications

• G11B5/00 Primary

  Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor (G11B11/00 {and G11B13/00} take precedence) · CPC title

• G11B3/125

  by using electric or magnetic means · CPC title

• G11B5/486

  with provision for mounting or arranging electrical conducting means or circuits on or along the arm assembly · CPC title

• G11B5/4853

  Constructional details of the electrical connection between head and arm · CPC title

• G11B5/4833 Primary

  Structure of the arm assembly, e.g. load beams, flexures, parts of the arm adapted for controlling vertical force on the head (G11B5/484 takes precedence) · CPC title