Hard drive flexure including a trace overlapping a base layer feature

Patent metadata

Field	Value
Publication number	US-11900974-B2
Application number	US-202217883208-A
Country	US
Kind code	B2
Filing date	Aug 8, 2022
Priority date	Aug 11, 2021
Publication date	Feb 13, 2024
Grant date	Feb 13, 2024

Abstract

A flexure is described, which includes conductive traces extending from a proximal end of the flexure to a distal end of the flexure. The flexure also includes a plurality of outer gimbal struts configured to define an opening at the proximal end of the flexure. The flexure also includes an oblong feature extending into the opening, the oblong feature defines an aperture. The conductive traces include a first semi-circular conductive trace portion overlapping a first section of the oblong feature at a proximal end of the aperture extending to a distal end of the aperture. The conductive traces include a second semi-circular conductive trace portion overlapping a second section of the oblong feature at a proximal end of the aperture extending to the distal end of the aperture. The first and second semi-circular conductive trace portions define the aperture.

First claim

We claim:

1. A flexure comprising:
a plurality of conductive traces extending from a proximal end of the flexure to a distal end of the flexure;
a plurality of outer gimbal struts configured to define an opening at the proximal end of the flexure;
an oblong circular feature extending into the opening, the oblong circular feature defines an aperture; and
the plurality of conductive traces include a first semi-circular conductive trace portion overlapping a first section of the oblong circular feature at a proximal end of the aperture extending to a distal end of the aperture, and
the plurality of conductive traces include a second semi-circular conductive trace portion overlapping a second section of the oblong circular feature at a proximal end of the aperture extending to the distal end of the aperture.

2. The flexure of claim 1 , wherein each outer gimbal strut is connected to a bridge strut, the bridge strut configured to provide support to a portion of the plurality of conductive traces.

3. The flexure of claim 1 , wherein the second section of the oblong circular feature is opposite the first section of the oblong circular feature.

4. The flexure of claim 1 , wherein the plurality of conductive traces includes integrated electrical leads formed of copper.

5. The flexure of claim 1 , wherein the plurality of conductive traces include a first insulating material layer, signal conductors on the first insulating material layer, and an insulating and protective covercoat layer over the signal conductors.

6. The flexure of claim 1 , further comprising a base formed of stainless steel.

7. The flexure of claim 6 , wherein the oblong circular feature is a part of the base.

8. The flexure of claim 6 , wherein the plurality of conductive traces are insulated from the stainless steel using a dielectric layer.

9. The flexure of claim 1 , comprising a head slider at a slider tongue.

10. The flexure of claim 9 , wherein the plurality of conductive traces and the oblong circular feature are configured as a reinforced support structure for the head slider at the slider tongue.

11. A suspension comprising:
a flexure comprising:
a plurality of conductive traces extending from a proximal end of the flexure to a distal end of the flexure;
a plurality of outer gimbal struts configured to define an opening at the proximal end of the flexure;
an oblong circular feature extending into the opening, the oblong circular feature defines an aperture; and
the plurality of conductive traces include a first semi-circular conductive trace portion overlapping a first section of the oblong circular feature at a proximal end of the aperture extending to a distal end of the aperture, and
the plurality of conductive traces include a second semi-circular conductive trace portion overlapping a second section of the oblong circular feature at a proximal end of the aperture extending to the distal end of the aperture.

12. The suspension of claim 11 , wherein each outer gimbal strut is connected to a bridge strut, the bridge strut configured to provide support to a portion of the plurality of conductive traces.

13. The suspension of claim 11 , wherein the second section of the oblong circular feature is opposite the first section of the oblong circular feature.

14. The suspension of claim 11 , wherein the plurality of conductive traces includes integrated electrical leads formed of copper.

15. The suspension of claim 11 , wherein the plurality of conductive traces include a first insulating material layer, signal conductors on the first insulating material layer, and an insulating and protective covercoat layer over the signal conductors.

16. The suspension of claim 11 , wherein the flexure includes a base formed of stainless steel.

17. The suspension of claim 16 , wherein the oblong circular feature is a part of the base.

18. The suspension of claim 16 , wherein the plurality of conductive traces are insulated from the stainless steel using a dielectric layer.

19. The suspension of claim 11 , further comprising a head slider at a slider tongue.

20. The suspension of claim 19 , wherein the plurality of conductive traces and the oblong circular feature provide a reinforced support structure for the head slider at the slider tongue.

21. The suspension of claim 11 , further comprising:
a base plate;
a load beam; and
the flexure being affixed to the load beam and configured to attach a magnetic read/write head slider to a gimbaled portion of flexure.

Assignees

• Magnecomp Corp

Inventors

• Kotchaplayuk Treesoon
• Phu Johnathan Hy-Tho
• Ee Kuen Chee
• Glaess David
• Warinsirirux Rakkiet

Classifications

• G11B5/4853 Primary

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

• G11B5/4833

  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

• G11B5/484 Primary

  Integrated arm assemblies, e.g. formed by material deposition or by etching from single piece of metal or by lamination of materials forming a single arm/suspension/head unit · CPC title

• G11B5/4873

  the arm comprising piezoelectric or other actuators for adjustment of the arm · CPC title