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US 6,477,017 B2Granted
Disk drive and head suspension unit
AssigneeFujitsu Limited
InventorsToru Kohei, Yasumasa Kuroba
Life of this patent
Estimating the term…
Abstract
Each arm module includes plate-shaped arms which lie on top of each other. A head slider is supported by the extending end of each arm module and faces a data recording surface of a magnetic disk. An actuator drives each arm module. Each arm module has a structure in which the plate-shaped arms which lie on top of each other are integrated with each other.
Claims37
A disk drive comprising:
- a disk which is rotated;
- a plurality of arm modules, each of which comprises a plurality of plate-shaped arms which lie on top of each other, said plurality of arm modules lining up vertically, and, except the lowest one, having openings through which a laser beam passes, respectively, the sizes of the openings of each pair of adjacent arm modules of said plurality of arm modules being such that the opening of the upper arm module is larger than the opening of the lower arm module,
- a plurality of head sliders which are supported by the extending end of said arm module and face said disk;
- said arm modules further comprising suspensions supported by said plurality of plate-shaped arms and supporting said head slider;
- and
- an actuator which drives said arm modules,
- wherein the plurality of arms of each arm module are integrated as a result of extending-end portions thereof being welded together by the laser beam which has passed through the openings of the higher arm modules.
4 more elements
A head suspension unit, used in a disk drive, comprising:
- a plurality of arm modules, each of which comprises a plurality of plate-shaped arms which lie on top of each other, said plurality of arm modules lining up vertically, and, except the lowest one, having openings through which a laser beam passes, respectively, the sizes of the openings of each pair of adjacent arm modules of said plurality of arm modules being such that the opening of the upper arm module is larger than the opening of the lower arm module,
- a plurality of head sliders which are supported by the extending ends of said arm modules;
- said arm modules further comprising suspensions supported by said plurality of plate-shaped arms and supporting said head sliders;
- wherein the plurality of arms of each arm module are integrated as a result of extending-end portions thereof being welded together by the laser beam which has passed through the openings of the higher arm modules.
1 more element
A disk drive comprising:
- a disk which is rotated;
- a plurality of arm modules, each of which comprises a plurality of plate-shaped arms which lie on top of each other;
- said plurality of arm modules lining up vertically, and, except the lowest one, having openings through which a laser beam passes, respectively, the sizes of the openings of each pair of adjacent arm modules of said plurality of arm modules being such that the opening of the upper arm module is larger than the opening of the lower arm module;
- a head slider which is supported by the extending end of said plurality of arm modules and faces said disk;
- and
- an actuator which drives said plurality of arm modules;
- wherein the plurality of arms of each arm module are integrated as a result of extending-end portions thereof being welded together by the laser beam which has passed through the openings of the higher arm modules.
4 more elements
A head suspension unit, used in a disk drive, comprising:
- a plurality of arm modules, each of which comprises a plurality of plate-shaped arms which lie on top of each other;
- said plurality of arm modules lining up vertically, and, except the lowest one, having openings through which a laser beam passes, respectively, the sizes of the openings of each pair of adjacent arm modules of said plurality of arm modules being such that the opening of the upper arm module is larger than the opening of the lower arm module;
- and
- a head slider which is supported by the extending end of said plurality of arm modules;
- wherein the plurality of arms of each arm module are integrated as a result of extending-end portions thereof being welded together by the laser beam which passed through the openings of the higher arm modules.
2 more elements
A disk drive comprising:
- a rotary actuator rotatable about a shaft;
- at least two arms, each having a longitudinally-extending plate shape, having a proximal end and a distal end, and having a planar surface;
- at least two suspensions supported by said at least two arms respectively at the distal end thereof;
- at least two head sliders supported by said at least two suspensions;
- a first part stacking said at least two arms in direct contact with each other at the proximal end thereof around the shaft of said rotary actuator;
- and
- a second part connecting the planar surfaces of said at least two arms together between the proximal and distal ends thereof.
4 more elements
A head suspension assembly, used in a disk drive, comprising:
- a first arm having a longitudinally-extending plate shape, having a proximal end and a distal end, and having a planar surface;
- a first suspension supported by said first arm at the distal end thereof;
- a first head slider supported by said first suspension;
- a part of the planar surface of said first arm contacting with a planar surface of a second arm between the proximal end and distal end of the first arm,
- said second arm having a longitudinally-extending plate shape, having a proximal end and a distal end, and having a planar surface;
- a second suspension supported by said second arm at the distal end thereof;
- and
- a second head slider supported by said second suspension.
5 more elements
A disk drive comprising:
- a rotary actuator being rotatable about a shaft;
- at least two arms, each having a longitudinally-extending plate shape, having a proximal end and a distal end, and having a planar surface;
- a suspension supported by one of said at least two arms at the distal end thereof;
- a head slider supported by said suspension;
- a first part stacking said at least two arms in direct contact with each other at the proximal end thereof around the shaft of said rotary actuator;
- and
- a second part connecting the planar surfaces of said at least two arms together between the proximal and distal ends thereof.
4 more elements
Dependencies are inferred from the claim text.