CN100557691C - Disc driving equipment and disk unit with it - Google Patents
Disc driving equipment and disk unit with it Download PDFInfo
- Publication number
- CN100557691C CN100557691C CNB2005101146340A CN200510114634A CN100557691C CN 100557691 C CN100557691 C CN 100557691C CN B2005101146340 A CNB2005101146340 A CN B2005101146340A CN 200510114634 A CN200510114634 A CN 200510114634A CN 100557691 C CN100557691 C CN 100557691C
- Authority
- CN
- China
- Prior art keywords
- hub
- anchor clamps
- axle
- bearing sleeve
- male thread
- 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.)
- Expired - Fee Related
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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
- G11B17/022—Positioning or locking of single discs
- G11B17/028—Positioning or locking of single discs of discs rotating during transducing operation
- G11B17/0281—Positioning or locking of single discs of discs rotating during transducing operation by an adapter enabling the centre-pin to receive carriers with large centre hole
-
- 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
- G11B19/2009—Turntables, hubs and motors for disk drives; Mounting of motors in the drive
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
- G11B33/02—Cabinets; Cases; Stands; Disposition of apparatus therein or thereon
- G11B33/04—Cabinets; Cases; Stands; Disposition of apparatus therein or thereon modified to store record carriers
- G11B33/0405—Cabinets; Cases; Stands; Disposition of apparatus therein or thereon modified to store record carriers for storing discs
-
- 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
The invention provides a kind of disc driving equipment comprises: the bearing sleeve of cylinder form; Rotatably be supported on the axle in this bearing sleeve; Be attached to the hub of axle, have the support section that is used for from the lateral branch support plate medium of bearing sleeve, wherein, the outer peripheral face in the hub upper end forms male thread portion; Anchor clamps have the circular port that is formed on its center, and insert wherein the upper end of hub, and these anchor clamps are with the support section clamping disk(-sc) medium of hub; Nut, screw thread are attached to the male thread portion of hub, and this nut draws clamping force for anchor clamps provide.
Description
Technical field
The present invention relates to a kind of disk unit, more particularly, relate to a kind of disc driving equipment that is used for the supporting disk medium and this dish medium is rotated with specific speed, and a kind of disc apparatus with this disc driving equipment.
Background technology
Recently, along with computing machine is made more and more littler and more and more thinner, therefore the disk unit that for example is installed in the hard disk drive in the computing machine also needs littler and thinner.In order to address that need, a kind of as in the method that realizes the little and thin hard disk drive that computing machine uses, use hub and anchor clamps to press from both sides magnetic disk media, this method has been used to the supporting disk medium and has made in its magnetic disk drive with specific speed rotation.
Fig. 1 is the cut-open view of traditional disc driving equipment.With reference to Fig. 1, a traditional disc driving equipment 10 that is known as the spindle motor of axle rotation usefulness comprises: cylinder-shaped bearing sleeve 2 is fixed to the substructure member 1 of disk unit (not shown); Axle 3 is attached to substructure member 1 and support in bearing sleeve 2 with being rotated; Hub 4 is attached to axle 3; Anchor clamps 6 are with the clamping screw 7 of hub 4 clamping disk(-sc) media 5 and stationary fixture 6.
To be fixed on it, bearing sleeve 2 has dynamic pressure support parts 8 that make axle 3 rotations at the inner peripheral surface of bearing sleeve 2 in the bearing sleeve 2 insertion substructure members 1.Axle 3 is cylinder form basically, and the end has the small diameter portion 3a that axle 3 diameters are reduced thereon. Female screw hole 3b and 3f form at the upper surface and the lower surface of axle 3 respectively inwards with predetermined depth.Cylindrical part 4a is formed on the center of hub 4, inserts to be fixed to the there round the outer peripheral face of small diameter portion 3a.5 outstanding support section 4b partly form in the outer circumferential edges of hub 4 towards the dish medium.Anchor clamps 6 are the elastic components with general " Ω " shaped cross, have the circular port 6a that is formed centrally therein.Clamping screw 7 comprises integrally formed threaded portion 7a and head part 7b, clamping screw 7 is attached to the upper end of axle 3 by insertion anchor clamps 6 between hub 4 and clamping screw 7.Clamping screw 7 provides elastic force (clamping force) at precalculated position stationary fixture 6 and to anchor clamps 6, thereby places the support section 4b of hub 4 and the dish medium 5 between the anchor clamps 6 clamped.
In disc driving equipment 10, lubricating fluid for example lubricating oil injection bearing sleeve 2 and the axle 3 between little slotted section.The compression that lubricating fluid for example is subjected to the dynamic pressure generation trough (not shown) of the axle 3 dynamic pressures recessed formation in surface produces dynamic pressure.
Yet, in traditional disc driving equipment 10, because clamping screw 7 stationary fixtures 6, so the height of disc driving equipment 10 can not reduce fully.Like this, be difficult to realize thin disk unit.
In other words, when the whole height of disc driving equipment 10 reduces by the height that reduces axle 3, because the height of the dynamic pressure support part 8 that the intensity tool of disc driving equipment 10 is had a significant impact also is reduced, so the problem that exists axle 3 and dish medium 5 stably not to be rotated.When the height of dynamic pressure support part 8 is constant when the height at axle 3 has been reduced, that is, when the height minus of small diameter portion 3a after a little while, the combination of hub 4 has become difficulty.In addition, along with the length of clamping screw 7 is reduced, the clamping force of clamping screw 7 also is reduced, thereby anchor clamps 6 can not firmly be fixed.
In addition, when the combination of anchor clamps 6 by clamping screw 7 is fixed, be difficult to determine anchor clamps 6 are fixed on the situation of ad-hoc location, and be difficult to predetermined clamping force clamping disk(-sc) medium 5 firmly.Situation about therefore, can generation dish medium 5 can not rotate with being stabilized.
Summary of the invention
In order to solve above-mentioned and/or other problem, the invention provides a kind of disc driving equipment, when reducing disc driving equipment thickness, can guarantee to obtain the intensity of stable rotation, and a kind of disk unit with this disc driving equipment.
According to an aspect of the present invention, a kind of disc driving equipment comprises: the bearing sleeve of cylindricality; Rotatably be supported on the axle in the described bearing sleeve; Be attached to the hub of axle, have from the support section of the lateral branch support plate medium of described bearing sleeve, wherein, the outer peripheral face in described hub upper end forms male thread portion; Anchor clamps have the circular port that is formed on its center, and insert wherein the upper end of described hub, and these anchor clamps clamp described dish medium with the support section of described hub; Nut, screw thread are attached to the male thread portion of described hub, and draw clamping force for described anchor clamps provide.
This hub comprises step part, and its diameter is bigger than the diameter of male thread portion, and this step part is formed on the below of male thread portion.
Vertically be extruded with jut from the upper surface of axle, described jut is inserted the pressure that forms in the described hub forcibly and is inserted in the hole.All be formed with threaded portion at the outer peripheral face of jut and each of the inner peripheral surface of forcing patchhole, to be bonded to each other.
According to a further aspect in the invention, a kind of disk unit comprises: substructure member and lid member; Be used to store the dish medium of data; Disc driving equipment is installed on the substructure member and makes the rotation of dish medium with specific speed; Actuator is installed on the substructure member, can be with read/write head at the desired locations that rotates on the pivot and move on the dish medium, and this disc driving equipment comprises: the bearing sleeve of cylindricality; Rotatably be supported on the axle in the described bearing sleeve; Be attached to the hub of axle, have from the support section of the lateral branch support plate medium of described bearing sleeve, wherein, the outer peripheral face in described hub upper end forms male thread portion; Anchor clamps have the circular port that is formed on its center, and insert wherein the upper end of described hub, and these anchor clamps clamp described dish medium with the support section of described hub; Nut, screw thread are attached to the male thread portion of described hub, and draw clamping force for described anchor clamps provide.
According to a further aspect in the invention, a kind of disc driving equipment comprises: bearing sleeve; Rotatably be supported on the axle in the described bearing sleeve; Hub is formed on axle and goes up and have from the support section of the lateral branch support plate medium of bearing sleeve; Anchor clamps have the hole that is formed centrally therein, and insert wherein the upper end of described hub, and these anchor clamps clamp described dish medium with the support section of described hub; Clamper component, be attached to the outer peripheral face of described hub, and the lower surface of this clamper component contacts closely for described anchor clamps provide clamping force, when clamper component is assembled on the anchor clamps with the anchor clamps upper surface, the clamper component upper surface is identical with the upper level of hub, and is perhaps low slightly than upper surface.
Description of drawings
By the detailed description that the reference accompanying drawing carries out the preferred embodiment of the present invention, above-mentioned and other characteristics of the present invention and advantage will become apparent, wherein:
Fig. 1 is the cut-open view of traditional disc driving equipment;
Fig. 2 is the decomposition diagram that has according to the disk unit of the disc driving equipment of the embodiment of the invention;
Fig. 3 is the cut-open view of the disc driving equipment of Fig. 2;
Fig. 4 is the cut-open view of the example of the axle of the modification that shows among Fig. 3 and hub.
Embodiment
With reference to Fig. 2 and Fig. 3, disk unit 100, promptly hard disk drive comprises substructure member 111 and the lid member 112 that is attached on the substructure member 111.The lid member can be attached to substructure member 111 by a plurality of attachment screws 119.Be used for being installed in substructure member 111 with the disc driving equipment 130 that specific speed makes dish medium 120 rotations of storage data support this dish medium 120 simultaneously.Be used for that read/write head 144 is moved to the actuator 140 that coils desired locations on the medium 120 and be installed in substructure member 111.
Interaction between electric current by being applied to VCM coil 151 and the field region that produces by magnet 152, VCM150 by the control of servo-control system (not shown) so that swing arm 142 along direction rotation according to Fu Laiming (Fleming) lefft-hand rule.That is, when the power supply of disk unit 100 is communicated with and dish medium 120 when beginning to rotate, VCM150 is rotated counterclockwise swing arm 142, thereby 144 move on the recording surface of dish medium 120.On the contrary, when the power supply of disk unit 100 disconnects and the rotation of dish medium 120 when stopping, VCM150 turns clockwise swing arm 142, thereby 144 remove from dish medium 120.
By using bonding agent that the lower surface of top plate portion 134e and the upper surface 133d of axle 133 are sticked together, top plate portion 134e contacts with the upper surface 133d face of axle 133.External thread 134d is formed on the outer peripheral face of top plate portion 134e.Support section 134b projects upwards from the outer edge part of extension 134m.The upper surface 134j of support section 134b contacts with supporting disk medium 120 with 120 in medium of dish.In addition, the step part 134k with step shape is formed on the precalculated position of the about center section of sidewall sections 134g, that is, and and under male thread portion 134d.
The dish medium 120 be have disc-shape, diameter can be and for example is not more than one inch rigid body.Along with the sidewall sections 134g of hub 134 be inserted in dish medium 120 in the center pit 120a that is formed centrally, dish medium 120 contacts and is received on it with the upper surface 134j face of the support section 134b of hub 134.
In said structure, the upper surface 134n from the lower surface 111c of substructure member 111 to the top plate portion 134e of nut 139 and hub 134, the height H of disc driving equipment 30 is about 2.7mm or littler.
In the method by the disc driving equipment 130 clamping disk(-sc) media 120 of as above constructing, at first, bearing sleeve 132 inserts in the substructure members 111.Axle 133 inserts in the bearing sleeve 132 installs hub 134 then.Next, the center pit 120a of dish medium 120 inserts around the outer peripheral face of the sidewall sections 134g of hub 134, and dish medium 120 is contacted with upper surface 134j face to be received thereon, and this upper surface 134j flatly forms on the support section 134b of hub 134.Then, the mode of passing the circular port 136a of anchor clamps 136 with the outer peripheral face of the sidewall sections 134g of the top plate portion 134e of hub 134 and hub 134 is arranged anchor clamps 136.At last, the male thread portion 134d that forms of the outer peripheral face of the top plate portion 134e that is attached at hub 134 of nut 139.The upper surface 139a of nut 139 should be arranged as and much at one height of the upper surface 134n of the top plate portion 134e of hub 134 or lower than the height of upper surface 134n.When loading onto nut 139, pressed by nut 139 by the anchor clamps 136 that elastic component forms, thereby produced clamping force.The upper surface 120b that is contained in the dish medium 120 on the upper surface 134j of support section 134b is pressed by the sweep 136c of anchor clamps 136.When finish nut 139 in conjunction with the time, place the dish medium 120 between hub 134 and the anchor clamps 136 to be clamped securely.
Therefore, in disc driving equipment 130 according to the present invention, because axle 133 and hub 134 are bonded to each other, and anchor clamps 136 are fixed by the nut 139 that screw thread is attached to male thread portion 134d, this male thread portion 134d forms at the outer peripheral face of the top plate portion 134e of hub 134, so compare with traditional disc driving equipment 10 of the use clamping screw 7 that shows among Fig. 1, the height H of disc driving equipment 130 has reduced in the length of keeping dynamic pressure support part 138.Like this, disc driving equipment 130 can be made thinlyyer.
In addition, in disc driving equipment 130 according to the present invention, the simple operations that nut 139 is attached to hub 134 produces the clamping force of anchor clamps 136 and has fixed dish medium 120.Because step part 134k forms at the sidewall sections 134g of hub 134, so nut 139 can be prevented from exceedingly screwing.In addition, because the top plate portion 134e of hub 134 and a part of sidewall sections 134g insert among the circular port 136a of anchor clamps 136,, and can easily guarantee the accuracy of assembling so determining of anchor clamps 136 positions is easy.Therefore, because dish medium 120 is firmly fixed,, disc driving equipment 130 coils medium 120 rotations so also can stably making.
In addition, in disc driving equipment 130 according to the present invention, owing to need in axle 133, not form the traditional clamping screw of small diameter portion, can simplify so handle a step of spools 133 to show in conjunction with Fig. 1.In addition, owing in axle 133, there is not small diameter portion,, and be used to make dish medium 120 also can increase with the rigidity of the disc driving equipment 130 of specific speed rotation so the length of dynamic pressure support part 138 can increase.
Fig. 4 is a hub and a cut-open view of the example that is modified that shows in Fig. 3.With reference to Fig. 4, for combination axle 133 and hub 134, jut 133h is vertically outstanding from the upper surface 133d of axle 133, and this jut 133h is inserted this pressure forcibly and inserts in the hole.Another kind of mode, threaded portion 134r and 133j can be respectively formed on the outer peripheral face of the inner peripheral surface of forcing patchhole 134p and jut 133h, thus but axle 133 and hub 134 screw thread combinations.
Though the present invention has been carried out showing particularly and describing with reference to the preferred embodiments of the present invention, but those skilled in the art should be appreciated that, under the situation that does not break away from the spirit and scope of the present invention that are defined by the claims, can carry out various details and pro forma modification to it.
For example, in the above-described embodiments, step part 134k is described as the excessive screwing that prevents nut 139.Yet nut 139 can install to till the anchor clamps 136 contact step part 134k.In this case, step part 134k is used as the installation site of limiting anchor clamps 136.Because nut 139 need to be installed just to be used for by anchor clamps 136 and hub 134 clamping disk(-sc) medium 120 securely, so step part 134k not necessarily.
In addition, though in the above description, hub 134, anchor clamps 136, axle 133, bearing sleeve 132 and/or nut 139 are formed by the metal of for example stainless steel or aluminium, and these parts can be formed by other metal or resin.
In addition, though in the above description, single dish medium Unit 120 are installed in the disc drive apparatus 130, the invention is not restricted to this.For example, a plurality of dish media can be installed.In this case, can between them, be furnished with the separator that is used to keep space between the dish medium.
In addition, though in the above description, less than one inch, the invention is not restricted to this according to the diameter of the dish medium 120 that is installed in disc driving equipment 30 of the present invention.That is, disc driving equipment 130 according to the present invention can be used diameter greater than one inch dish medium.
As mentioned above, the present invention has following effect.
At first, because male thread portion is formed on the outer peripheral face of hub, nut is attached to male thread portion, institute Can be fixed with anchor clamps. Therefore, because can be without the minor diameter of the pinching screw in the conventional art and axle Part, and anchor clamps can be positioned at the height identical with the hub height with nut, perhaps are lower than the height of hub, institute Length with the dynamic pressure support part can be guaranteed that it is thinner that disc driving equipment can be made. In addition, because Anchor clamps with annular insert in the hub, pressed and be fixed by make anchor clamps in conjunction with nut, so with tradition The fixed cell of use pinching screw stationary fixture compare, anchor clamps can be fixed with shirtsleeve operation, Disc driving equipment can easily be assembled. Also have, the position of anchor clamps can easily be determined, and anchor clamps Accuracy in the installation has improved. Therefore, because clamping force can be applied to the dish medium reliably, so Disc driving equipment can make the ground rotation of dish media stabilize. Because traditional pinching screw and the small diameter portion of axle No longer need, more particularly, do not needed owing to process the step of axle, so improved production efficiency.
In addition, because step part is arranged on hub, so can limit the binding site of nut, prevent spiral shell Female excessive screwing. Therefore, by the simple operations nut, it is predetermined anchor clamps can be securely fixed in acquisition The position of clamping force, thereby the dish medium can be clamped securely.
In addition, owing to disc driving equipment according to the present invention is installed in the disk unit, so along with dish drives The reduction of moving device height, it is thinner that disk unit can be made.
Claims (9)
1, a kind of disc driving equipment comprises:
The bearing sleeve of cylindricality;
Rotatably be supported on the axle in the described bearing sleeve;
Be attached to the hub of axle, have from the support section of the lateral branch support plate medium of described bearing sleeve, wherein, the outer peripheral face in described hub upper end forms male thread portion;
Anchor clamps have the circular port that is formed on its center, and insert wherein the upper end of described hub, and these anchor clamps clamp described dish medium with the support section of described hub;
Nut, screw thread are attached to the male thread portion of described hub, and draw clamping force for described anchor clamps provide.
2, equipment as claimed in claim 1, wherein, described wheel hub comprises step part, its diameter is bigger than the diameter of male thread portion, and is formed on the below of described male thread portion.
3, equipment as claimed in claim 1 wherein, vertically is extruded with jut from the upper surface of axle, and described jut is inserted the pressure that forms in the described hub forcibly and inserts in the hole.
4, equipment as claimed in claim 3 wherein, all is formed with threaded portion at the outer peripheral face of jut and each of the inner peripheral surface of forcing patchhole, to be bonded to each other.
5, a kind of disk unit comprises: substructure member and lid member; Be used to store the dish medium of data; Disc driving equipment is installed on the substructure member and makes the rotation of dish medium with specific speed; Actuator is installed on the substructure member, can be with read/write head at the desired locations that rotates on the pivot and move on the dish medium, and described disc driving equipment comprises:
The bearing sleeve of cylindricality;
Rotatably be supported on the axle in the described bearing sleeve;
Be attached to the hub of axle, have from the support section of the lateral branch support plate medium of described bearing sleeve, wherein, the outer peripheral face in described hub upper end forms male thread portion;
Anchor clamps have the circular port that is formed on its center, and insert wherein the upper end of described hub, and these anchor clamps clamp described dish medium with the support section of described hub;
Nut, screw thread are attached to the male thread portion of described hub, and draw clamping force for described anchor clamps provide.
6, equipment as claimed in claim 5, wherein, described wheel hub comprises step part, its diameter is bigger than the diameter of male thread portion, and is formed on the below of described male thread portion.
7, equipment as claimed in claim 5 wherein, vertically is extruded with jut from the upper surface of axle, and described jut is inserted the pressure that forms in the described hub forcibly and inserts in the hole.
8, equipment as claimed in claim 7 wherein, all is formed with threaded portion at the outer peripheral face of jut and each of the inner peripheral surface of forcing patchhole, to be bonded to each other.
9, a kind of disc driving equipment comprises:
Bearing sleeve;
Rotatably be supported on the axle in the described bearing sleeve;
Hub is formed on axle and goes up and have from the support section of the lateral branch support plate medium of bearing sleeve;
Anchor clamps have the hole that is formed centrally therein, and insert wherein the upper end of described hub, and these anchor clamps clamp described dish medium with the support section of described hub;
Clamper component, be attached to the outer peripheral face of described hub, and the lower surface of this clamper component contacts closely for described anchor clamps provide clamping force, when clamper component is assembled on the anchor clamps with the anchor clamps upper surface, the clamper component upper surface is identical with the upper level of hub, and is perhaps low slightly than upper surface.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004329048A JP2006139859A (en) | 2004-11-12 | 2004-11-12 | Disk driver and magnetic disk device using the driver |
| JP2004329048 | 2004-11-12 | ||
| KR1020050028545 | 2005-04-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1783271A CN1783271A (en) | 2006-06-07 |
| CN100557691C true CN100557691C (en) | 2009-11-04 |
Family
ID=36620587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101146340A Expired - Fee Related CN100557691C (en) | 2004-11-12 | 2005-10-24 | Disc driving equipment and disk unit with it |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2006139859A (en) |
| KR (1) | KR100604936B1 (en) |
| CN (1) | CN100557691C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100786615B1 (en) * | 2006-12-18 | 2007-12-21 | 에이테크솔루션(주) | Spindle motor for hdd improved on processing construction of sleeve and groove of hub |
| KR101101555B1 (en) * | 2010-03-30 | 2012-01-02 | 삼성전기주식회사 | Motor and disk driving device equipped with motor |
| US8467146B2 (en) | 2010-08-30 | 2013-06-18 | Samsung Electro-Mechanics Co., Ltd. | Apparatus for clamping disk and motor assembly having the same |
| US8693139B2 (en) * | 2012-08-02 | 2014-04-08 | Western Digital Technologies, Inc. | Ultra-thin HDD embedded disk clamp design |
| KR20160080837A (en) | 2014-12-29 | 2016-07-08 | 삼성전기주식회사 | Spindle motor and driving device of recording disk having the same |
| US10460758B2 (en) * | 2018-03-09 | 2019-10-29 | Seagate Technology Llc | Disk clamping mechanism including annular ring member |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1151582A (en) * | 1995-08-31 | 1997-06-11 | 大宇电子株式会社 | Disc chucking apparatus of compact disc player turntable |
| CN1173019A (en) * | 1996-08-05 | 1998-02-11 | 德利信电机股份有限公司 | Disk Gripping device |
| CN1182936A (en) * | 1996-09-20 | 1998-05-27 | 索尼公司 | Optical disc driving device |
| US6510123B1 (en) * | 1998-12-22 | 2003-01-21 | Thomson Licensing, S.A. | Recording or reproduction apparatus with a mount for disc-type recording media |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6366427B1 (en) * | 1999-04-21 | 2002-04-02 | Seagate Technology Llc | Single disc clamp nut for disc clamping in a disc drive |
| KR100493023B1 (en) * | 2002-05-03 | 2005-06-07 | 삼성전자주식회사 | Hard disk drive having disk protector and magnetic head protector |
| WO2003102946A1 (en) * | 2002-06-03 | 2003-12-11 | Seagate Technology Llc | Rotating shaft conical fluid dynamic bearing |
-
2004
- 2004-11-12 JP JP2004329048A patent/JP2006139859A/en active Pending
-
2005
- 2005-04-06 KR KR1020050028545A patent/KR100604936B1/en not_active IP Right Cessation
- 2005-10-24 CN CNB2005101146340A patent/CN100557691C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1151582A (en) * | 1995-08-31 | 1997-06-11 | 大宇电子株式会社 | Disc chucking apparatus of compact disc player turntable |
| CN1173019A (en) * | 1996-08-05 | 1998-02-11 | 德利信电机股份有限公司 | Disk Gripping device |
| CN1182936A (en) * | 1996-09-20 | 1998-05-27 | 索尼公司 | Optical disc driving device |
| US6510123B1 (en) * | 1998-12-22 | 2003-01-21 | Thomson Licensing, S.A. | Recording or reproduction apparatus with a mount for disc-type recording media |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1783271A (en) | 2006-06-07 |
| JP2006139859A (en) | 2006-06-01 |
| KR20060045529A (en) | 2006-05-17 |
| KR100604936B1 (en) | 2006-07-28 |
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