WO2003001522A1 - Appareil a disque - Google Patents

Appareil a disque Download PDF

Info

Publication number
WO2003001522A1
WO2003001522A1 PCT/JP2001/005358 JP0105358W WO03001522A1 WO 2003001522 A1 WO2003001522 A1 WO 2003001522A1 JP 0105358 W JP0105358 W JP 0105358W WO 03001522 A1 WO03001522 A1 WO 03001522A1
Authority
WO
WIPO (PCT)
Prior art keywords
annular
head
disk
disc
stopper
Prior art date
Application number
PCT/JP2001/005358
Other languages
English (en)
Japanese (ja)
Inventor
Tomoki Yaguchi
Shinji Fujimoto
Yukihiro Komura
Kazuaki Miyajima
Original Assignee
Fujitsu Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujitsu Limited filed Critical Fujitsu Limited
Priority to JP2003507819A priority Critical patent/JP4108600B2/ja
Priority to PCT/JP2001/005358 priority patent/WO2003001522A1/fr
Publication of WO2003001522A1 publication Critical patent/WO2003001522A1/fr

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
    • G11B17/02—Details
    • G11B17/038—Centering or locking of a plurality of discs in a single cartridge
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/20—Driving; Starting; Stopping; Control thereof

Definitions

  • the present invention generally relates to a disk drive, and more particularly, to a wire balancer mounting structure and a stopper structure of a disk drive. Background technology
  • the head becomes the accessible area on the magnetic disk.
  • the magnetic disks and the magnetic heads for reading and writing data from and to these magnetic disks are arranged in a sealed chamber defined in a disk enclosure (housing).
  • the magnetic disk is driven to rotate by a spindle assembly having a motor.
  • the spindle assembly includes a spindle shaft fixed to a housing and a spindle hub rotatably mounted around a spindle shaft by a pair of bearings.
  • the magnetic disk and the annular spacer are alternately arranged on the spindle hap.
  • a wire balancer is attached to the disk clamp to absorb the imbalance of the disk rotation.
  • a wire balancer is mounted in the annular groove of the disk clamp, and the wire balancer is held in the annular groove of the disk clamp by the panel force.
  • the wire balancer is held in the annular groove of the disk clamp only by its spring force, there is a possibility that the disk device may be displaced when an impact is applied to the disk device.
  • it is difficult to remove the wire balancer because it is pressed against the inner peripheral surface of the ring land which forms an annular groove by panel force.
  • a rotary head actuator In recent magnetic disk drives, a rotary head actuator is generally used to move a head across a track of a magnetic disk. It is the actuator that limits the swing range of the head actuator. For example, if the head actuator runs out of control for some reason, the tip of the head actuator will stop. It serves to prevent the magnetic head attached to the disk from coming off the magnetic disk. In addition, the starting point of the servo track lighting is defined by the position of the outer stop.
  • the shaft is formed as a separate part from the base, and the shaft is press-fitted into the hole of the base, thereby increasing the cost.
  • press-fitting into the base causes metal contact and generates dust.
  • the annular stopper is attached to the shaft. Since rubber was press-fitted and mounted, if a material with a large change in temperature characteristics-soft material was used for the stopper rubber, there was a problem that the rubber mounted on the shaft would shift. Disclosure of the invention
  • an object of the present invention is to provide a disk device which can prevent the wire balancer from being displaced and which can be easily removed.
  • Another object of the present invention is to provide a disk device having a simple and inexpensive factory stopper mechanism.
  • a housing having a base; a disk having a plurality of tracks rotatably mounted in the housing; a head for writing / reading data to / from the disk; A head that is rotatably mounted on the housing and supports the head at a distal end thereof; and a head that moves the head across the track of the disk; A spindle assembly for rotating the disc; a disc clamp for fixing the disc to the spindle assembly; and a wire balancer attached to the disc clamp; the disc clamp having a plurality of fixing holes.
  • a disk device is provided, which is locked to one of the annular lands.
  • the inner annular land has a plurality of projections on its outer periphery
  • the wire balancer has an arcuate locking portion at an intermediate portion thereof.
  • the wire balancer is mounted in the annular groove so that the arc-shaped engaging portion is engaged with one of the protrusions of the inner annular land.
  • the wire balancer has an engagement bend at least at one end.
  • the wire balancer is mounted in the annular groove so that the bent portion for engagement is inserted into one of the notches and abuts against the inner peripheral surface of the outer land.
  • the wire balancer has an arc shape in the middle It has a locking portion.
  • the wire balancer is mounted in the annular groove such that the arc-shaped locking portion is inserted into one of the cutouts of the outer annular land and contacts the inner peripheral surface of the outer annular land.
  • a housing having a base and a cover secured to the base; a disk having a plurality of tracks rotatably mounted within the housing; and writing data to the disk.
  • a head for performing reading; and an actuator arm rotatably mounted on the housing and supporting the head at a distal end thereof, for moving the head across a track of a disk.
  • a stopper that contacts the arm of the actuator and prevents the arm of the actuator from moving toward the inner side or the outer side by a predetermined amount or more; and the stopper includes:
  • a disk device comprising: a shaft formed integrally with the base; and an annular buffer member mounted on the shaft. It is provide.
  • Head Actuy Yue has a coil support arm having a first height from the surface of the base.
  • the shaft has a second height lower than the first height
  • the annular cushioning member is partially mounted on the shaft so as to be able to collide with the coil support arm.
  • the cover has a projection aligned with the shaft, the projection being inserted into the upper end of the annular cushioning member.
  • the stopper is formed integrally with the base on the side opposite to the coil supporting arm with respect to the shaft, the stopper being capable of contacting the annular cushioning member.
  • Figure 1 is a plan view of the magnetic disk drive with the cover removed;
  • Fig. 2 is a sectional view taken along the line 2-2 in Fig. 1 with the cover fixed to the base;
  • FIG. 3A is a plan view of the first embodiment of the disc clamp
  • FIG. B shows the first embodiment of the wire balancer
  • FIG. 3C is a plan view of the state in which the wire balancer of FIG. 3B is mounted on the disk clamp of the first embodiment
  • FIG. 4A is a plan view of a second embodiment of the disc clamp;
  • FIG. 4B shows a second embodiment of the wire balancer;
  • FIG. 4C is a plan view of the wire balancer of FIG. 4B mounted on the disc clamp of the second embodiment
  • FIG. 5A is similar to FIG. 4A, and is a plan view of a disc clamp according to a second embodiment;
  • FIG. 5B is a diagram illustrating a wire balancer according to a third embodiment;
  • FIG. 5C is a plan view showing a state where the wire balancer of FIG. 5B is mounted on the disc clamp of the second embodiment;
  • FIG. 6A is a plan view of a disc clamp according to a third embodiment
  • FIG. 6B is a diagram showing the calibrator of the fourth embodiment
  • FIG. 6C is a plan view showing the state where the wire balancer of FIG. 6B is mounted on the disc clamp of the third embodiment
  • Fig. 7 is a perspective view of the area around the actiyue block
  • FIG. 8 is a sectional view of the superstructure according to the first embodiment
  • FIG. 9 is a sectional view of the stopper according to the second embodiment.
  • FIG. 10 is a sectional view of a stopper according to the third embodiment.
  • Fig. 11 is a sectional view of the stopper according to the fourth embodiment.
  • Fig. 12 is a sectional view of the stopper according to the fifth embodiment.
  • Fig. 13 is a sectional view of the stopper according to the sixth embodiment.
  • Fig. 14 is a sectional view of the stopper according to the seventh embodiment.
  • FIG. 15 is a sectional view of a stopper according to the eighth embodiment. BEST MODE FOR CARRYING OUT THE INVENTION
  • FIG. 1 there is shown a plan view of the magnetic disk drive with the cover removed
  • FIG. 2 is a cross-sectional view taken along line 2-2 of FIG.
  • the housing (disk closure) 10 is composed of a base 12 and a cover 14 fixed to the base 12, and has a sealed chamber 1 inside. 5 is defined.
  • a part of the flange 62 of the pre 60 is inserted, and the flange 62 is fastened to the base 12 by a plurality of screws 64.
  • a spindle shaft 16 is press-fitted and fixed to the flange 62.
  • the spindle motor shaft 16 has a DC motor station 66 having a coil 66 fixed thereto by bonding, and is connected to a DC motor port via a pair of bearings 68, 70. 72 are rotatably mounted.
  • the inner race of the bearings 68, 70 is press-fitted and fixed to the spindle shaft 16, and the annular spindle hub ⁇ 4 and the annular bush 80 are bonded to the outer race of the bearings 68, 70 by bonding.
  • Each is fixed.
  • An annular yoke 76 is adhered to the inner peripheral surface of the spindle hub 74, and an annular permanent magnet 78 is adhered to the inner peripheral surface of the annular yoke 76.
  • a predetermined gap is formed between the permanent magnet 78 and the stay 65, and the permanent magnet 78 forms a magnetic circuit around the stay 65 in cooperation with the yoke 76. ing.
  • the outer peripheral surface of the annular bush 80 is adhered to the inner peripheral surface of the spindle hub 74.
  • An annular groove 80a is formed in the annular bush 80, and an annular projection 62a fitted into the annular groove 80a is formed in the flange 62 as a whole.
  • the labyrinth seal 82 is formed by the annular groove 80a and the annular projection 62a inserted into the annular 80a, and the grease oil mist applied to the bearing 70 is sealed in the sealing chamber 15 To prevent intrusion.
  • a magnetic seal 84 is provided between the spindle shaft 16 above the bearing 68 and the spindle hub 74, and the oil mist of the grease applied to the bearing 68 is placed in the sealed chamber 15. To prevent entry.
  • the magnetic disk 22 and the annular spacer 86 are alternately inserted into the spindle hub 74, and a plurality of discs 18 are fastened to the spindle hub 74 with a plurality of screws 20.
  • the magnetic disks 22 (four magnetic disks in the present embodiment) are fixed to the spindle hub 74 at a predetermined interval.
  • the upper end of the spindle shaft 16 is fixed to the housing 10 by fastening the screw 38 to the spindle shaft 16 through a hole formed in the cover 14.
  • reference numeral 24 designates a mouth actuator comprising an actuator arm assembly 26 and a magnetic circuit 28.
  • the arm arm assembly 26 rotates around the shaft 30 fixed to the base 12. It is mounted so that it can be rolled.
  • the actuating overnight arm assembly 26 includes an actuating tab opening 32 mounted rotatably around the shaft 30 via a pair of bearings, and a plurality extending in one direction from the actuating evening block 32.
  • a head assembly 36 fixed to the distal end of each arm 34.
  • Each head assembly 36 supports a magnetic head 38 for writing / reading data to / from a magnetic disk 22 and a magnetic head 38 at a distal end thereof, and a base end of the magnetic head 38 is provided with a magnetic head.
  • a coil support arm 42 is formed integrally with the actuator tab 32, and the coil support arm 42 is formed. Supports coil 4'4.
  • the coil 44 is inserted into the gap of the magnetic circuit 28 to form the voice coil mode (VCM) 46.
  • Reference numeral 48 denotes a flexible printed wiring board (FPC) for supplying a write signal to the magnetic head 38 or extracting a read signal 'from the magnetic head 38, and one end of the flexible printed circuit board is a fan. It is fixed to the side of the cutout block 32.
  • An outer stop 52 and an inner stop 54 that restrict the swing range of the actuator arm assembly 26 are fixed to the base # 2.
  • FIG. 3A a plan view of a disc clamp 18 according to the first embodiment of the present invention is shown.
  • the disc clamp 18 is made of aluminum and has a center hole 88 into which the spindle hub 74 is inserted.
  • the disc clamp 18 further includes an inner annular land 90 having a plurality of (six in the present embodiment) fixing holes 92 and an outer outer having a plurality of equally spaced cuts 97. It has an annular land 96 and an annular groove 98 defined between the inner annular land 90 and the outer annular land 96.
  • the inner annular land 90 has a plurality of equally spaced projections 94 on its outer periphery.
  • the wire balancer 100 is made of spring steel, and is previously bent into an arc shape. Further, the wire balancer 100 has an arcuate locking portion 102 which is bent at an intermediate portion.
  • the spindle assembly 60 is driven to rotate the magnetic disk 22 at a high speed to perform a vibration test.
  • the groove for detecting the rotational speed is provided on the inner ring land 90 of the disc clamp 18
  • the wire balancer 100 When the wire balancer 100 is mounted in the annular groove 98 as described above, the wire balancer 100 is pressed against the inner peripheral surface of the outer annular land 96 by its spring force. Since the arc-shaped locking portion 102 of the wire balancer 100 is locked to the projection 94, the wire balancer 100 is prevented from being displaced even when an impact is applied to the magnetic disk device. Is done. Furthermore, since the outer annular land 96 has a plurality of notches 97, the wire balancers 10 and 0 can be easily removed from the disc clamp 18 by inserting a pin or the like into one notch 97. It can be removed at any time.
  • FIG. 4A a plan view of a disk clamp 18A of the second embodiment is shown.
  • the inner annular land 90 has a circular outer peripheral surface, and does not have the plurality of protrusions 94 of the disk clamp 18 shown in FIG. 3A.
  • Other configurations of the disc clamp 18 A are the same as those of the disc clamp 18.
  • the wire balancer 104 of the second embodiment has bending portions 106 for engagement at both ends. The wire balancer 104 is bent in advance into an arc shape as shown in the figure.
  • FIG. 4C a plan view showing a state where the wire balancer 104 is mounted on the disc clamp 18A is shown.
  • the wire balancer 104 is attached to the annular groove 98 of the disc clamp 18 A, the engaging bent portions 106 at both ends are inserted into the notches 97 of the outer annular land 96, respectively, and the wire balancer 104 is inserted. 4 is pressed against the inner peripheral surface of the outer annular land 96. Engagement bent section 106 inserted into notch 97 Therefore, even when a shock or the like is applied to the magnetic disk device, the wire balancer 104 does not shift with respect to the disk clamp 18A.
  • FIG. 5A is a plan view of a disk clamp 18A according to the second embodiment similar to that shown in FIG. 4A.
  • a wire balancer 108 of the third embodiment having a bending portion 110 for engagement on one side is shown.
  • the wire balancer 108 is previously bent into an arc shape as shown in the figure.
  • FIG. 5C there is shown a plan view in which the wire balancer 108 is mounted in the annular groove 98 of the disc clamp 18A.
  • the engaging bent portion 110 formed at one end of the wire balancer 108 is inserted into the notch 97, and the wire balancer 108 is an inner peripheral surface of the disc clamp 18A outer ring 96. Since the engaging bent portion 110 is inserted into the notch 97, the wire balancer 108 is able to contact the disk clamp 18A even when an impact is applied to the magnetic disk drive. No misalignment occurs.
  • FIG. 6A a plan view of a disk clamp 18B of the third embodiment is shown.
  • the width and pitch of the notch 97 'formed on the annular annular land 96 are the same as those of the disk clamps 18 and 18A of the first and second embodiments. It is formed to be larger than the opening 97.
  • Other configurations of the present embodiment are the same as those of the disc clamp 18A shown in FIG. 4A.
  • FIG. 6B there is shown a gap balancer 112 of a fourth embodiment in which an arc-shaped locking portion 114 is formed in an intermediate portion. The balun balancer 112 is previously bent into an arc shape as shown in the figure.
  • FIG. 6C there is shown a plan view in which the wire balancer 112 is mounted in the annular groove 98 of the disk clamp 18B.
  • the arc-shaped locking portion 114 fits into the notch 97 ', and the wire balancer 112 is pressed against the inner peripheral surface of the annular annular land 96 and held. Since the arc-shaped locking portion 1 1 4 fits into the notch 9 7 ′, the wire balancer 1 1 2 can be positioned with respect to the disk clamp 18 B even when an impact is applied to the magnetic disk drive. A shift is prevented.
  • FIG. 7 is a rear perspective view of the circumference of the actuator block 32 of the actuator arm assembly 26.
  • Coil support arm 4 2 that supports coil 4 4 By contacting the outer stopper 52 and the inner stopper 54, the operating range of the arm arm assembly 26 is restricted.
  • FIG. 8 there is shown a sectional view of the outer stopper 52 of the first embodiment.
  • the outer stopper will be described, but the inner stopper has a structure similar to the structure of the outer stopper of each embodiment.
  • the stop 52 is composed of a shaft 120 formed integrally with the base 12 and a cylindrical cushioning rubber 122 pressed into the shaft 120. Since the stopper 20 is formed integrally with the base 12, the number of parts can be reduced as compared with a conventional stopper, and the cost of the stopper can be reduced.
  • FIG. 9 is a cross-sectional view of the superstructure 52A of the second embodiment.
  • An annular groove 121 is formed on the outer periphery of the shaft 120, and a cylindrical cushion rubber is formed in the annular groove 122. Attach 1 2 2. According to the present embodiment, vertical displacement of the cylindrical cushioning rubber 122 can be prevented.
  • FIG. 10 there is shown a sectional view of an outer stopper 52B of the third embodiment.
  • the height of the shaft 124 formed integrally with the base 12 is lower than the height of the coiling support arm 42.
  • the storage shaft 124 is formed short, it is possible to rotate the actuator arm assembly 26 into a predetermined position, thereby facilitating the assembly of the rotary actuator 24. it can.
  • FIG. 11 is a cross-sectional view of the first embodiment 52C of the fourth embodiment.
  • the height of the shaft 124 is formed to be lower than the height of the coil support arm 42, and the cover 14 is integrally formed with the projections 126 aligned with the shaft 124. Is formed.
  • the cylindrical cushioning rubber 128 is partially pressed into the shaft 124, and the projection 126 is inserted into the upper end of the cylindrical cushioning rubber 128.
  • the projection 126 integrally formed with the cover 144 into the upper end of the cylindrical rubber cushion 128 in this manner, the shaft 124 of the cylindrical rubber cushion 128 is inserted. To prevent slipping Can be.
  • FIG. 12 there is shown a sectional view of an outer stop 52D of the fifth embodiment.
  • the shaft 124 is formed integrally with the base 12 on the side opposite to the coil support arm 42. It is provided with the completed paper presser 130. Since the cylindrical presser rubber 1 2 2 deformed by the collision of the coil support arm 4 2 can be pressed by the stopper 1 330, the shaft 1 2 Dropout can be reliably prevented.
  • FIG. 13 there is shown a sectional view of an outer stopper 52E of the sixth embodiment.
  • a cylindrical cushion rubber 13 2 having an H-shaped longitudinal section is employed, and a projection 1 2 6 ′ formed integrally with the cover 14 is formed to be long. 3 Insert the protrusion 1 2 6 ′ deep into the upper end of 2. With this structure, it is possible to reliably prevent the cylindrical buffer rubber 13 2 from coming off the shaft 124.
  • the stopper strength can be changed without changing the outer diameter by changing the inner diameter D 1 of the cylindrical cushioning rubber 13.
  • the material of the cylindrical cushioning rubber 13 3 is the same, and the strength of the stopper can be changed by changing only the inner diameter. Etc.), and the cylinder cushion rubber can be changed in a short time. Also, since the stopper strength can be adjusted only by changing the inner diameter, fine adjustment is possible.
  • FIG. 15 there is shown a cross-sectional view of an even stopper 52G of the eighth embodiment.
  • a shaft 134 having a first mounting hole 135 at the upper end is formed integrally with the base 12.
  • the cover 14 has a second mounting hole 13 7 aligned with the first mounting hole 13 5.
  • the cushioning rubber 1 36 has a first projection 1 38 and a second projection 140 opposite to the first projection 1 38, and the first projection 1 38 is the first projection.
  • the second projection 140 is fitted in the second mounting hole 135, and the second projection 140 is fitted in the mounting hole 135. Since the cushioning rubber 1336 of the present embodiment is formed from solid rubber, the strength of the cushioning rubber 1336 can be increased.
  • the cushion rubber 1336 can be reliably prevented from coming off.
  • the shaft 13 4 is omitted, and the mounting holes are formed directly in the base 12 and the cover 14.
  • a superstructure can be formed without a shaft.
  • the present invention is configured as described in detail above, the displacement of the balancer mounted on the disc clamp can be reliably prevented, and the wire balancer can be easily removed as necessary. . Furthermore, since the shaft of the factory overnight stopper is formed integrally with the pace, the number of parts of the stopper can be reduced, and the cost of the stopper can be reduced. Also, since the stopper rubber is directly press-fitted into the shaft integrally formed on the base, there is no metal contact compared to the conventional configuration in which the shaft is press-fitted into the base, and dust is less likely to be generated. Further, since the shaft is formed integrally with the base, the positional accuracy of the stopper can be improved.

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Abstract

L'invention concerne un appareil à disque comprenant un boîtier présentant une base, un disque ayant une pluralité de pistes, et une tête pour données d'écriture/lecture sur le disque et à partir du disque, montée en rotation dans ledit boîtier, un bras d'actionnement monté en rotation sur le boîtier et ayant une extrémité supportant la tête, et un actionneur de la tête destiné à déplacer celle-ci à travers une piste du disque. L'appareil à disque comprend en outre un ensemble à tige pour la rotation du disque, des moyens de fixation du disque sur l'ensemble à tige, des moyens d'équilibrage à fil fixés auxdits moyens de fixation du disque. Les moyens de fixation du disque présentent une plage circulaire intérieure ayant une pluralité de trous de fixation, une plage circulaire extérieure ayant une pluralité de portions découpées, et une rainure circulaire formée entre les plages circulaires intérieure et extérieure. Les moyens d'équilibrage à fil sont insérés dans ladite rainure circulaire, une partie de ces moyens étant en prise avec la plage circulaire intérieure ou extérieure.
PCT/JP2001/005358 2001-06-22 2001-06-22 Appareil a disque WO2003001522A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2003507819A JP4108600B2 (ja) 2001-06-22 2001-06-22 ディスク装置
PCT/JP2001/005358 WO2003001522A1 (fr) 2001-06-22 2001-06-22 Appareil a disque

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2001/005358 WO2003001522A1 (fr) 2001-06-22 2001-06-22 Appareil a disque

Publications (1)

Publication Number Publication Date
WO2003001522A1 true WO2003001522A1 (fr) 2003-01-03

Family

ID=11737473

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2001/005358 WO2003001522A1 (fr) 2001-06-22 2001-06-22 Appareil a disque

Country Status (2)

Country Link
JP (1) JP4108600B2 (fr)
WO (1) WO2003001522A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009019757A1 (fr) * 2007-08-06 2009-02-12 Fujitsu Limited Dispositif de stockage
WO2009040981A1 (fr) * 2007-09-25 2009-04-02 Nhk Spring Co., Ltd. Pince pour dispositif d'entraînement en rotation de disque et procédé de fabrication de pince

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6289538U (fr) * 1985-11-22 1987-06-08
JPH03290890A (ja) * 1990-04-09 1991-12-20 Fujitsu Ltd 磁気ディスク装置用回転体の構造

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6289538U (fr) * 1985-11-22 1987-06-08
JPH03290890A (ja) * 1990-04-09 1991-12-20 Fujitsu Ltd 磁気ディスク装置用回転体の構造

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
JIII Journal of Technical Disclosure No. 93-30853, Japan Institute of Invention and Innovation (JIII), Japan, 01 November 1993 *
JIII Journal of Technical Disclosure No. 97-04190, Japan Institute of Invention and Innovation (JIII), Japan, 15 May 1997 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009019757A1 (fr) * 2007-08-06 2009-02-12 Fujitsu Limited Dispositif de stockage
JPWO2009019757A1 (ja) * 2007-08-06 2010-10-28 東芝ストレージデバイス株式会社 記憶装置
WO2009040981A1 (fr) * 2007-09-25 2009-04-02 Nhk Spring Co., Ltd. Pince pour dispositif d'entraînement en rotation de disque et procédé de fabrication de pince

Also Published As

Publication number Publication date
JP4108600B2 (ja) 2008-06-25
JPWO2003001522A1 (ja) 2004-10-14

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