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WO2009040981A1 - Clamp for disk rotation drive device and method of producing clamp - Google Patents

Clamp for disk rotation drive device and method of producing clamp Download PDF

Info

Publication number
WO2009040981A1
WO2009040981A1 PCT/JP2008/002240 JP2008002240W WO2009040981A1 WO 2009040981 A1 WO2009040981 A1 WO 2009040981A1 JP 2008002240 W JP2008002240 W JP 2008002240W WO 2009040981 A1 WO2009040981 A1 WO 2009040981A1
Authority
WO
WIPO (PCT)
Prior art keywords
clamp
disk
section
drive device
rotation drive
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2008/002240
Other languages
French (fr)
Japanese (ja)
Inventor
Atsushi Shitama
Shoji Wakatuki
Michinobu Hirama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NHK Spring Co Ltd
Original Assignee
NHK Spring Co Ltd
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 NHK Spring Co Ltd filed Critical NHK Spring Co Ltd
Publication of WO2009040981A1 publication Critical patent/WO2009040981A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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

Landscapes

  • Holding Or Fastening Of Disk On Rotational Shaft (AREA)

Abstract

A clamp for a disk rotation drive device has overhang sections that are formed with an increase in weight of the clamp due to an increase in the thickness of the overhang sections suppressed and that are less likely to cause an error in circumferential weight balance. The clamp (1) has a center section (9) fixed to a rotationally drivable hub and also has a contact section (5) circumferentially provided on an outer peripheral section (3). The clamp (1) causes the contact section (5) to come into contact with a magnetic disk (7) on which information can be recorded, and this applies pressing force, in the direction of the rotation axis, to the disk (7) to cause the disk (7) to be fixedly supported by the hub. On the outer peripheral section (3), there are provided engagement walls (15) circumferentially arranged at predetermined intervals. The overhang sections (21) are protruded radially inward from the engagement walls (15) so as to be able to prevent a C-ring (105) from coming out of place in the direction of the rotation axis.
PCT/JP2008/002240 2007-09-25 2008-08-19 Clamp for disk rotation drive device and method of producing clamp Ceased WO2009040981A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007248030A JP2009080876A (en) 2007-09-25 2007-09-25 Clamp for disk rotation drive device and method for manufacturing clamp
JP2007-248030 2007-09-25

Publications (1)

Publication Number Publication Date
WO2009040981A1 true WO2009040981A1 (en) 2009-04-02

Family

ID=40510893

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/002240 Ceased WO2009040981A1 (en) 2007-09-25 2008-08-19 Clamp for disk rotation drive device and method of producing clamp

Country Status (2)

Country Link
JP (1) JP2009080876A (en)
WO (1) WO2009040981A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011103150A (en) * 2009-11-10 2011-05-26 Alphana Technology Co Ltd Disk driving device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003001522A1 (en) * 2001-06-22 2003-01-03 Fujitsu Limited Disc apparatus

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH031522A (en) * 1989-05-29 1991-01-08 Sony Corp Formation of resist pattern
JP4246354B2 (en) * 2000-06-14 2009-04-02 富士通テン株式会社 Disk unit
JP2002343002A (en) * 2001-05-18 2002-11-29 Matsushita Electric Ind Co Ltd Disk unit
JP3793078B2 (en) * 2001-12-06 2006-07-05 富士通株式会社 Wire balance stock jig
JP2004280966A (en) * 2003-03-17 2004-10-07 Hitachi Ltd Magnetic disk drive
JP4108696B2 (en) * 2005-07-19 2008-06-25 富士通株式会社 Disk unit and pressing clamp

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003001522A1 (en) * 2001-06-22 2003-01-03 Fujitsu Limited Disc apparatus

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SHIN'YA OZAWA: "Spindle Motor", JOURNAL OF TECHNICAL DISCLOSURE NO 97-4190 JAPAN INSTITUTE OF INVENTION AND INNOVATION, 15 May 1997 (1997-05-15), pages 1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011103150A (en) * 2009-11-10 2011-05-26 Alphana Technology Co Ltd Disk driving device

Also Published As

Publication number Publication date
JP2009080876A (en) 2009-04-16

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