Disk drive device
AssigneeSamsung Electro-Mechanics Japan Advanced Technology Co., Ltd.
InventorsMitsuo Kodama, Kazuhiro Matsuo
Life of this patent
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Abstract
A disk drive device includes a rotating body that rotates and drives a disk, a stationary body which includes a chassis with a protrusive part and a stator core fastened with the chassis, and a fluid bearing unit. The chassis has a recess with a bottom provided in the protrusive part, and the fluid bearing unit includes an insertion part inserted in the recess with the bottom, and a core encircled part. A gas passage is provided which causes a clearance space between the insertion part and the recess with the bottom to be in communication with a disk retaining space.
Claims20
A disk drive device comprising:
- a rotating body on which a disk to be retained in a disk retaining space is to be mounted and which rotates and drives the disk;
- a stationary body that comprises a chassis which includes a protrusive part protruding toward the rotating body in an axial direction, and a stator core which includes an inner periphery fastened to the protrusive part;
- and
- a fluid bearing unit which supports the rotating body in a freely rotatable manner relative to the chassis,
- the chassis being provided with a recess with a bottom which is formed in an end face of the protrusive part and which is concaved in an opposite direction to the rotating body,
- the fluid bearing unit comprising an insertion part inserted in the recess with the bottom and joined with the recess, and a core encircled part encircled by the stator core, and
- a gas passage which causes a clearance space formed between the insertion part and the recess with the bottom to be in communication with the disk retaining space and which allows a gas to pass through being provided in at least one of the stationary body and the fluid bearing unit.
A disk drive device comprising:
- a rotating body on which a disk to be retained in a disk retaining space is to be mounted and which rotates and drives the disk;
- a stationary body that comprises a chassis which includes a protrusive part protruding toward the rotating body in an axial direction, and a stator core which includes an inner periphery fastened to the protrusive part;
- and
- a fluid bearing unit which supports the rotating body in a freely rotatable manner relative to the chassis,
- the chassis being provided with a recess with a bottom which is formed in an end face of the protrusive part and which is concaved in an opposite direction to the rotating body,
- the fluid bearing unit comprising an insertion part inserted in the recess with the bottom and joined with the recess, and a core bonded part encircled by the stator core and bonded therewith, and
- a gas passage which causes a clearance space formed between the insertion part and the recess with the bottom to be in communication with the disk retaining space and which allows a gas to pass through being provided in at least one of the stationary body and the fluid bearing unit.
A disk drive device comprising:
- a rotating body on which a disk to be retained in a disk retaining space is to be mounted and which rotates and drives the disk;
- a stationary body that comprises a chassis which includes a protrusive part protruding toward the rotating body in an axial direction, and a stator core which includes an inner periphery fastened to the protrusive part;
- and
- a fluid bearing unit which supports the rotating body in a freely rotatable manner relative to the chassis,
- the chassis being provided with a recess with a bottom which is formed in an end face of the protrusive part and which is concaved in an opposite direction to the rotating body,
- the fluid bearing unit comprising an insertion part inserted in the recess with the bottom and joined with the recess, and a core bonded part encircled by the stator core and bonded therewith, and
- a gas containing helium at a predetermined ratio being filled in the disk retaining space.
Dependencies are inferred from the claim text.