Claims
- 1. A monocoque head suspension for carrying a read-write head on a distal end and attachable at a proximal end to an actuator assembly, the suspension comprising:a generally planar bottom skin having an interior surface; a top skin having an interior surface opposing the interior surface of the bottom skin; and positioned between the bottom skin and top skin and affixed to the interior surfaces of the bottom skin and top skin, the core having voids formed therein that form hollow regions between the bottom skin and top skin, wherein the top and bottom skins are separated by the thickness of the core.
- 2. The monocoque head suspension of claim 1, wherein the voids are cavities formed through the core such that the hollow regions are defined by at least the interior surfaces of the bottom skin and top skin.
- 3. The monocoque head suspension of claim 2, wherein the core comprises a polymer material.
- 4. The monocoque head suspension of claim 3, wherein the bottom skin and top skin comprise a metal material.
- 5. The monocoque head suspension of claim 3, wherein the polymer material comprises a photo-imageable epoxy material.
- 6. The monocoque head suspension of claim 3, wherein the polymer comprises polyimide or polyamide.
- 7. The monocoque head suspension of claim 3, wherein the polymer material comprises silicon.
- 8. The monocoque head suspension of claim 2, wherein the cavities are formed through the core using a lithography process.
- 9. The monocoque head suspension of claim 2, wherein the thickness of the core varies from a proximal end to a distal end of the core.
- 10. The monocoque head suspension of claim 9, wherein the thickness of the core varies linearly from the proximal end to the distal end of the core.
- 11. The monocoque head suspension of claim 9, wherein the thickness of the core varies along a curve from the proximal end to the distal end of the core.
- 12. The monocoque head suspension of claim 1, wherein the core is separately manufactured and affixed to both the top skin and the bottom skin.
- 13. The monocoque head suspension of claim 12, wherein the core has ridges formed therein to separate the bottom skin from the top skin.
- 14. The monocoque head suspension of claim 13, wherein the ridges are positioned at least along most of a perimeter of the core.
- 15. The monocoque head suspension of claim 14, wherein further ridges are positioned generally in the center of the core.
- 16. The monocoque head suspension of claim 12, wherein the core is a corrugated material such that the voids are channels formed in the corrugated material.
- 17. The monocoque head suspension of claim 16, wherein the corrugated material comprises a thin sheet of metal.
- 18. The monocoque head suspension of claim 16, wherein the corrugated material comprises a polymer.
- 19. The monocoque head suspension of claim 16, wherein the corrugated material has a trapezoidal cross-section pattern.
- 20. The monocoque head suspension of claim 16, wherein the corrugated material has sinusoidal cross-sectional pattern.
- 21. The monocoque head suspension of claim 1, wherein the bottom skin and top skin have longitudinal edges that are curved.
- 22. The monocoque head suspension of claim 1, wherein the core further comprises:a plurality of walls extending between the bottom skin and top skin and affixed to the interior surfaces of the bottom skin and top skin.
- 23. The monocoque head suspension of claim 22, wherein at least one wall of the core laterally provides a lateral boundary between two of the hollow regions.
- 24. The monocoque head suspension of claim 22, wherein the at least one wall of the core laterally provides a lateral boundary between two of the hollow regions.
- 25. The monocoque head suspension of claim 22, wherein the walls of the core laterally bound at least two of the hollow regions.
- 26. The monocoque head suspension of claim 22, wherein each hollow region is circumscribed by the walls of the core.
- 27. An assembly to store data on a magnetic medium and read data from the mediums the assembly comprising:a read-write head; an actuator assembly to position the read-write head over a specified location on the medium; and a monocoque head suspension carrying the read-write head on a distal end and attached at a proximal end to the actuator assembly, the suspension comprising: a generally planar bottom skin having an interior surface; a top skin having an interior surface opposing the interior surface of the bottom skin; and a core positioned between the bottom skin and top skin and affixed to the interior surfaces of the bottom skin and too skin, the core having voids therein that form hollow regions between the bottom skin and top skin, wherein the voids are cavities formed through the core such that the hollow regions are defined by at least the interior surfaces of the bottom skin and top skin.
- 28. The monocoque head suspension of claim 27, wherein the core comprises a polymer material, and wherein the bottom skin and top skin each comprise a stainless steel material.
- 29. The monocoque head suspension of claim 28, wherein the cavities are formed through the core using a lithography process.
- 30. The monocoque head suspension of claim 28, wherein the thickness of the core varies from the proximal end to the distal end of the core.
- 31. The monocoque head suspension of claim 27, wherein the core is separately manufactured and affixed to both the top skin and the bottom skin.
- 32. The monocoque head suspension of claim 31, wherein the core has ridges formed therein to separate the bottom skin from the top skin.
- 33. The monocoque head suspension of claim 32, wherein the ridges are positioned at least along most of a perimeter of the core.
- 34. The monocoque head suspension of claim 33, wherein further ridges are positioned generally in the center of the core.
- 35. The monocoque head suspension of claim 31, wherein the corn is a corrugated material such that the voids are channels formed in the corrugated material.
- 36. A monocoque head suspension for carrying a read-write head on a distal end and attachable at a proximal end to an actuator assembly, the suspension comprising:a generally planar bottom skin having an interior surface; a top skin having an interior surface opposing the interior surface of the bottom skin; and a polymer care having a first surface affixed to the interior surface of the bottom skin and a second surface affixed to the interior surface of the top skin such that the core separates the interior surfaces of the bottom skin and the top skin, the core having cavities formed therethrough that form hollow regions between the bottom skin and top skin.
- 37. The monocoque head suspension of claim 36, wherein the core comprises a photo-imageable epoxy material.
- 38. The monocoque head suspension of claim 37, wherein the cavities are formed through the core using a lithography process.
- 39. The monocoque head suspension of claim 38, wherein the thickness of the core varies from a proximal end to a distal end of the core.
- 40. A monocoque head suspension for carrying a read-write head on a distal end and attachable at the proximal end to an actuator assembly, the suspension comprising:a generally planar bottom skin having an interior surface; a top skin having an interior surface opposing the interior surface of the load beam; and a separately manufactured one-piece core positioned between the bottom skin and top skin and affixed the interior surfaces of the bottom skin and top skin, the core having voids formed therein that form hollow regions between the bottom skin and top skin.
- 41. The monocoque head suspension of claim 40, wherein the core has ridges formed therein to separate the bottom skin from the top skin.
- 42. The monocoque head suspension of claim 41, wherein the ridges are positioned at least along most of a perimeter of the core.
- 43. The monocoque head suspension of claim 42, wherein further ridges are positioned generally in the center of the core.
- 44. The monocoque head suspension of claim 40, wherein the core is a corrugated material such that the voids are channels formed in the corrugated material.
- 45. A monocoque head suspension for carrying a read-write head on a distal end and attachable at a proximal end to an actuator assembly, the suspension comprising:a generally planar bottom skin having an interior surface; a top skin having an interior surface opposing the interior surface of the bottom skin; and a corrugated core positioned between the bottom skin and top skin and affixed to the interior surfaces of the bottom skin and top skin, the corrugated core having a plurality of channels therein that form hollow regions within the head suspension, the hollow regions extending generally parallel to the interior surfaces of the bottom skin and top skin.
- 46. The monocoque head suspension of claim 45, wherein the corrugated core comprises a thin sheet of metal material.
- 47. The monocoque head suspension of claim 46, wherein the corrugated core has a trapezoidal cross-sectional pattern.
- 48. Read-write head suspension, comprising:a pair of spaced metal skins; and core means for connecting the skins.
- 49. The read-write suspension of claim 48, wherein the spaced metal skins comprise steel and the core means comprise a material having a low-density relative to steel.
- 50. The read-write suspension of claim 48, wherein the spaced metal skins comprise steel and wherein the core means comprises a polymer, aluminum, or silicon.
- 51. The read-write head suspension of claim 48 wherein the core means comprises mass reduction features.
- 52. The read-write head suspension of claim 48 wherein the core means is adhesively connected to the spaced skins.
- 53. The read-write head suspension of claim 48 wherein the core means is adhesively connected to the spaced skins by means of a ultraviolet light, curable adhesive.
- 54. The read-write head suspension of claim 53 wherein the spaced skins have a plurality of holes for admitting ultraviolet light.
- 55. A monocoque head suspension for carrying a read-write head on a distal end and attachable at a proximal end to an actuator assembly, the suspension comprising:a generally planar bottom skin having an actuator region separated from a monocoque region by a spring region, the monocoque region having an interior end proximate to the spring region and extending a distal end; a top skin extending from the interior end of the monocoque region to the distal end; and a core affixed to the top skin and monocoque region of the bottom skin.
- 56. The monocoque head suspension of claim 55, wherein the core further comprises:at least one void formed therein defining a hollow region between the top skin and spring region of the beam.
- 57. The monocoque head suspension of claim 55, wherein the core further comprises at least three lateral contact regions, the first and third lateral contact regions coupled to the top skin region, and the second lateral contact region coupled to the spring region of the beam between the first and second contact regions.
CROSS-REFERENCE TO RELATED APPLICATION(S)
This application claims the benefit of provisional application No. 60/243,214 filed on Oct. 25, 2000, entitled “Monocoque Suspension Design For Increased Stiffness and Reduced Mass Design,” No. 60/243,219 filed on Oct. 25, 2000, entitled “Unibody Arm Design For High Performance Disc Drive,” and No. 60/304,239 filed on Jul. 10, 2001, entitled “Monocoque Suspension With Curved Edges And Photolitographically Defined Polymer Core,” which are hereby incorporated by reference as through fully set forth herein. This application is also related to U.S. patent application Ser. No. 10/042,061, filed Oct. 24, 2001, publication number U.S. 2002/0057536 A1, published on May 16, 2002, and entitled “Unibody (Monocoque) Arm Design for High Performance Disc Drives”.
US Referenced Citations (22)
Foreign Referenced Citations (1)
Number |
Date |
Country |
0 942 412 |
Sep 1999 |
EP |
Non-Patent Literature Citations (1)
Entry |
IBM, “Damped mounting plate for head gimbal assembly in hard disk drive-has cavities filled with high loss elostomer damping material, and is secured to suspension load beam with adhesive or spot welds”, Jan. 10, 1999, RD 417123A, Derwent 1999 104539. |
Provisional Applications (3)
|
Number |
Date |
Country |
|
60/243214 |
Oct 2000 |
US |
|
60/243219 |
Oct 2000 |
US |
|
60/304239 |
Jul 2001 |
US |