CN1524263A - Disc separator plate with air dam - Google Patents
Disc separator plate with air dam Download PDFInfo
- Publication number
- CN1524263A CN1524263A CNA018230628A CN01823062A CN1524263A CN 1524263 A CN1524263 A CN 1524263A CN A018230628 A CNA018230628 A CN A018230628A CN 01823062 A CN01823062 A CN 01823062A CN 1524263 A CN1524263 A CN 1524263A
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- China
- Prior art keywords
- stationary barrier
- disk
- air
- leading edge
- flow
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- 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.)
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Classifications
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
- G11B5/58—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B5/60—Fluid-dynamic spacing of heads from record-carriers
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B25/00—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus
- G11B25/04—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus using flat record carriers, e.g. disc, card
- G11B25/043—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus using flat record carriers, e.g. disc, card using rotating discs
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- 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
- G11B33/14—Reducing influence of physical parameters, e.g. temperature change, moisture, dust
- G11B33/148—Reducing friction, adhesion, drag
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
- G11B5/58—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B5/60—Fluid-dynamic spacing of heads from record-carriers
- G11B5/6005—Specially adapted for spacing from a rotating disc using a fluid cushion
Landscapes
- Supporting Of Heads In Record-Carrier Devices (AREA)
- Heat Sensitive Colour Forming Recording (AREA)
- Holding Or Fastening Of Disk On Rotational Shaft (AREA)
Abstract
A stationary disc separator plate (126) for use in a disc drive (100) to suppress turbulence near a read/write head (122) used to read data from and write data to a rotatable disc (108). A leading edge (136) and a trailing edge (138) of the plate define an open portion (128) to accommodate radial movement of the head adjacent the disc. A trailing edge air dam (140) disposed at the trailing edge of the plate diverts a substantial portion of an airflow generated by rotation of the disc away from the open portion to reduce an airflow velocity at the head. In disc drives having multiple discs, a plate is preferably disposed between each pair of adjacent discs. Air vents (154) preferably extend through the thickness of the plate to reduce aerodynamic drag and hence power consumption by the drive.
Description
Related application
The application requires U.S. Provisional Application the 60/277th, No. 761 right of priority, described application is called " being used to reduce the disc separator plate (DISC SEPARATOR FOR REDUCINGAIR FLOW BETWEEN SPINNING DISCS) of the air-flow between the spinning disk ", and the date of application is March 21 calendar year 2001.
Technical field
The application generally relates to the field of data in magnetic disk memory storage, more specifically but be not that restrictive one ground is said, relate to a disk separator that has an air dam (air dam) is arranged near rotatable, the rigid magnetic disks of disc driver, with the air-flow that reduces to be produced, thereby improve the serviceability of disc driver with boot disk rotation.
Background technology
Modern disk drives is used at large in many computer equipments, is used for storing mass data in the mode that the terminal user is easy to obtain.A typical disc driver has the disk of one or more rigidity, and a spindle drive motor is with these disks of constant high-speed rotation.
Each disk has a data storage surface, and this data storage surface is divided into a series of big body concentric data tracks, these data track spaced radials and across the endless belt with an internal diameter and an external diameter.Store with the form of magnetic flux conversion in all magnetic tracks of data on magnetic disk surface.The magnetic flux conversion is produced by one group of read/write head.Each magnetic track is divided into many data sector, and data storage is in the data segment of fixed size in these sectors.
Read/write head is by the suspension assembly supporting of flexibility, and suspension assembly is again by the rigidity actuator arm supporting that protrudes in the disk pack.Each read/write head comprises an air loading surface, and described air loading surface response disk rotates the air-flow that is produced and read/write head is flown up near magnetic disk surface.
A lasting trend of the sector is the size and its data storage capacity of increase and raising processing speed that reduces modern disk simultaneously.Such improvement realizes that by the various variations in driver constructions these variations comprise the disk running speed that use is higher.Although higher rotating speed has advantageously reduced the stand-by period (that is when a specific disk rotation, waiting for that selected data segment arrives read/write head spent time), it will cause the turbulence level in the air-flow that spinning disk produces bigger.
The be characterized as speed and the direction that make air-flow of turbulent flow or turbulent flow produce fluctuation.Such turbulent flow can cause does not wish the disk that takes place and the vibration of read/write head, thereby causes read/write head position (beating) mistake in the operating process.Therefore, near the turbulent flow that needs in the art to reduce the disc driver read/write head, to reduce the mistake of beating in the driver.
Summary of the invention
According to preferred embodiment, a disc driver is provided with the rotatable disk of at least one hard with a magnetic disc storage surface and with the rotatable actuator of a head rest supporting at the magnetic disc storage near surface.One fixed disk dividing plate is bearing near the disk, and extends near the major part ground on magnetic disc storage surface.Dividing plate comprises that a leading edge and trails the limit, and both cooperate to form an opening portion, and the mobile space that provides of head is provided.Leading edge is arranged on the head downstream, trails the limit and is arranged on head upstream.
Preferably, the limit of trailing of dividing plate comprises an air dam, and described air dam leaves head with most of air flow deflector, thereby reduces the turbulent flow at head place.In a preferred embodiment, leading edge has a wedge-like profile, and in another preferred embodiment, leading edge is provided with one second air dam, further to open air-flow from the opening portion deflection near head.Covering of extending laterally from the edge of dividing plate protected part and helped air-flow to flow along the direction in a desired path.
Preferably, stationary barrier radially extends to the disk pack assembly that a plurality of disks are fixed thereon from the adjacent spindle drive motor vicinity that is used for spinning disk, and surpasses the external diameter of disk.Stationary barrier assigns to be fixed in the substrate housing by the tab portion that it is engaged in the groove in the substrate housing.Stationary barrier is preferably has enough rigidity, so that stationary barrier only is bearing in its most outer diameter place.In having the driver of a plurality of disks, be preferably a stationary barrier all is set between every pair of adjacent disk.If desired, also can above the disk of top layer and/or below the disk of the bottom extra stationary barrier be set.
In another preferred embodiment, stationary barrier has the air stream outlet that is formed in the dividing plate.Can select the quantity of air stream outlet and size reducing aerodynamic drag, thereby reduce the consumption of spindle drive motor desired power.
After having read the following detailed description and carefully having checked relevant accompanying drawing,, these and various other feature and advantage of characteristic of the present invention know for will becoming.
The accompanying drawing summary
Fig. 1 is a planimetric map with disc driver of fixing disc separator plate of the preferred embodiment structure according to the present invention.
Fig. 2 is disc driver shown in Figure 1, has taken off the top layer disk so that the planimetric map according to the stationary barrier of a preferred embodiment to be shown.
Fig. 3 is disc driver shown in Figure 1, has taken off the top layer disk so that the planimetric map according to the stationary barrier of another preferred embodiment to be shown.
Fig. 4 is the elevation cross-sectional view according to the disc driver of a preferred embodiment, wherein is provided with a single stationary barrier between first and second rotatable disk.
Fig. 5 is the elevation cross-sectional view according to the disc driver of another preferred embodiment, wherein is adjacent to be provided with three stationary barriers with three rotatable disks.
Fig. 6 is the decomposition axonometric drawing of a disc driver, and it shows the disc driver shown in Fig. 4 substantially.
Fig. 7 is arranged on the sectional view of an air dam of trailing the place, limit of stationary barrier shown in Figure 6.
Fig. 8 is arranged on the sectional view of a wedge-shaped edge at the leading edge place of stationary barrier shown in Figure 6.
Fig. 9 is the axonometric drawing according to the stationary barrier of another preferred embodiment, and this preferred embodiment is provided with one second air dam at the leading edge place of stationary barrier.
Figure 10 is arranged on the sectional view of air dam at the leading edge place of stationary barrier shown in Figure 9.
Embodiment
Please always referring to accompanying drawing, more specifically say so referring to Fig. 1, this there is shown the planimetric map of one disc driver 100 of preferred embodiment structure according to the present invention.
One spindle drive motor 106 is installed on the substrate housing 102, and it rotates a plurality of disks 108 with constant travelling speed.Disk 108 is mounted and fixed on the spindle drive motor 106 by a clamp ring 110.Spindle drive motor 106, disk 108, middle ware spacer block (not shown) and clamp ring 110 constitute a disk pack assembly 111 together.
Adjacent with disk 108 is an actuator 112, and it pivots around a pivot bearing component 114 in being parallel to a plane of disk 108.This actuator 112 comprises the actuator body 116 by pivot bearing component 114 supportings.Actuator body 116 has the actuator arm 118 of supporting loading arm assembly 120.Loading arm assembly 120 and read/write head 122 is bearing in disk 108 recording surface near, to write data to disk 108 or from its sense data.Each read/write head 122 comprises a slider pad assembly, and its response air-flow that spinning disk 108 is produced in the operating process of disc driver 100 pneumatically supports read/write head 122.
Each disk 108 has a data storage areas, and a data recording surface is divided into the data track (not shown) of some circular concentric, and read/write head 122 can be placed near the data track with locating, with from the magnetic track reading of data or write data.The data recording surface is delimited by a circular rest region 124 in medial region, and read/write head 122 can rest on the disk 108 at this place when disc driver is not worked.The pivoting action of limiting actuator 116 advantageously is limited in the zone in the data recording surface 122 with the radial position with read/write head 122.
One fixing disc separator plate 126 is arranged on the below of the superiors' disk 108, thereby only part is as seen in Fig. 1.Dividing plate 126 extends out at periphery, surpass the most outer diameter of disk 108, and have an opening portion 128, this opening portion allow actuator 112 read/write head 122 is positioned at disk 108 recording surface near.Stationary barrier 126 comprises from covering of laterally stretching out of stationary barrier 126 and protects part part 130.
One desiccant filter 132 is fixed in the substrate housing 102, and is arranged on the outside of dividing plate 126 outer peripheral edges.One locking piece 134 also is visible in Fig. 1, and it is arranged in the dividing plate 126 being used for dividing plate is fixed on the substrate housing 102.Locking piece 134 is preferably a vertical alignment pin that comprises the hole that extends through in the dividing plate 126.
See also Fig. 2 now, wherein show disc driver shown in Figure 1, and taken off the disk 108 of top layer, so that stationary barrier 126 to be shown in further detail.The opening portion 128 of stationary barrier 126 is by a leading edge 136 that is positioned at read/write head 122 downstreams and be positioned at one of read/write head upstream and trail limit 138 and limit.In a preferred embodiment, the profile phase of the contour shape of leading edge 136 and actuator 116 upstream sides coupling so that actuator can with leading edge 136 with near relation place.Circular port 139 is used for making things convenient for the automatic assembling of disc driver 100.
The profile of trailing limit 138 preferably is an arc, so that read/write head 122 can correctly be positioned at the top of disk 108.The opening portion 128 of dividing plate 126 provides the exposed surface area of a minimum between all disks 108 in the close zone of read/write head 122.
The limit 138 of trailing of shown dividing plate 126 comprises an air dam 140, and described air dam comprises the flared part in the limit air inlet opening part 128.But air dam 140 is configured to the air-flow of deflection around a large portion of actuator 112, shown in the arrow among Fig. 2.Air dam 140 also play remove air-flow, from air dam 140 tops by and arrive the effect of the turbulent flow the remainder of read/write head 122.
Determining that a fluid stream is that Reynolds number is a crucial parameter in the laminar flow or the process of turbulent flow.For air-flow, reynolds number Re is defined by following relational expression:
Re＝VD/v，
(1)
In the formula
The V=gas velocity,
One characteristic length or the diameter in the specific flow field of D=, and
The kinematic viscosity of v=air.
One critical Reynolds numerical value Re is arranged
c, with the downstream laminar flow in this value, with the overdraught turbulent flow in this value.Reynolds number is substantially equal to Re
cThe air-flow at place is called transitional flow.
The ratio of Reynolds number role of delegate between inertial force on the flow field and viscous force.Therefore, for the air-flow near spinning disk, Reynolds number will be lower, and air-flow is a laminar flow near one of disk thin zone (being called the boundary layer).Along with moving away from disk or along with the increase of gas velocity, Reynolds number will increase, and air-flow becomes turbulent flow.Therefore, dividing plate provides a fixing surface, can reduce the air velocity at close stationary barrier and disk place owing to the viscous force in the air-flow (shearing force).
In disc driver in the past, the rotating speed of disk be about per minute 3,000 to 5,000 change (rev/min).For present disc driver, the rotating speed of disk 108 increases to 10,000 or even above 15,000 rev/mins.If people wish to keep laminar air flow in some zone under the situation that rotating speed increases, so generally must make all disks get nearlyer (this can reduce the D value in the equation 1) together at interval, perhaps reduce the flowing velocity in those zones.Invention required for protection always is to adopt back one method, and can reduce near the flowing velocity in the zone of read/write head 122 and actuator arm 118.Like this, compare with the airshed that is deflected around actuator 112, the volume and the speed that enter the air-flow of opening portion 128 all will reduce significantly.
Fig. 2 also shows the relation of stationary barrier 126 and disk pack assembly 111.The most outer diameter of stationary barrier 126 matches with substrate housing 102, and its interior diameter surrounds but do not contact spindle drive motor 106.Stationary barrier 126 is preferably the lightweight metal material of using such as stainless steel and makes.
Fig. 3 shows the disk stationary barrier 126 of another preferred embodiment according to the present invention.Similar to Fig. 2, the top layer disk is removed, to expose dividing plate 126 fully.As shown, in dividing plate 126, be provided with air stream outlet 154.Air stream outlet 154 is bigger, open wedge, can select its size to reduce the aerodynamic drag on the disk 108.The reducing and spindle drive motor rotating disk 108 desired power reduced of aerodynamic drag on the disk 108.
Fig. 4 provides the sectional view of disk drive components 100, disc separator plate 126 is shown is arranged between two disks 160,162 that supported by spindle drive motor 106.Nominally disk 160,162 is identical with the disk 108 shown in Fig. 1-3.One spacer block 163 provides distance between desired disk.In a preferred embodiment, the directly total distance of the bottom surface of first disk 160 and second disk 162 end faces is approximately 2.54 millimeters (0.100 inches), and comprises dividing plate 126 betwixt.One preferred thickness of the clearance between air dam 140 and the adjacent disk 160,162 is about the magnitude of 0.1 millimeter (0.004 inch).The preferred thickness of dividing plate remainder is about 1.22 millimeters (0.048 inches), thereby reserves the air gap distance of about 0.66 millimeter (0.026 inch) between dividing plate 126 and adjacent disk 160,162.Another preferred thickness of dividing plate 126 remainders is about 0.86 millimeter (0.034 inch), thereby the air gap distance of about 0.84 millimeter (0.033 inch) is provided between dividing plate 126 and disk 160,162.People can notice that when the thickness increase of dividing plate, because the gas-flow resistance of dividing plate 126 increases relatively, the 106 desired power consumption of rotary main shaft motor also increase.But have been found that with a driver that does not have stationary barrier and compare that about 1.22 millimeters (0.048 inch) thick dividing plates can make the quantity of jumping out mistake obviously reduce.
Between a pair of disk, use single separator plate 126 although Fig. 4 shows, in various activation configurations, also can easily use additional dividing plate.For the disc driver that has more than two dividing plates, additional dividing plate 126 can be added between the additional paired disk.If desired, can also above the single disk and/or below, perhaps in many disc drivers, above the superiors and the bottom disk and/or below add dividing plate 126.
Fig. 5 shows the side view of the disc driver of the disk pack assembly 111 with three disks 164,166 and 168.One first disc separator plate 126 is arranged between bottom disk 164 and the middle disk 166, and a second disk dividing plate 126 is arranged between middle disk 166 and the top layer disk 168.Below bottom disk 164, be provided with one the 3rd dividing plate 126.
First dividing plate 126 is shelved on the groove (not shown) in the substrate housing 102, and is similar to the placement of disc separator plate 126 in dual-disk driver.Second partition 126 is shelved on first dividing plate 126, more specifically says so to be shelved on covering of second partition 126 and to protect on the part 130.The lug part of first dividing plate 126 also is arranged in the groove of substrate housing, to retrain any rotation of first dividing plate 170.
After the correct parts that other has been installed, just the top cover (not shown) is fixed on the substrate housing 102.Top cover and second partition 126 press fits, and the dividing plate by dividing plate 126 covers the dividing plate that protects 130 pairs first dividing plates 126 of part and covers and protect part 130 and apply a force of compression.In case installed top cover, not only all dividing plates correctly to be fixed on the throne in the setting of the force of compression of top cover but also the part of each lug in the substrate housing groove.The spatial relationship that so just keeps all relatively disks of all dividing plates, and also guaranteed alignment between the rotation path of opening portion 128 and actuator 112.
Fig. 6 generally provides a stereographic map that decomposes of disc driver shown in Figure 4.In Fig. 7, show in more detail what trail 138 places, limit and trail limit air dam 140.Leading edge 136 is provided with a wedge shape (being cut into the inclined-plane) structure, so that a streamlined surface to be provided becoming a mandarin, as among Fig. 8 in more detail shown in.
Fig. 9 and 10 shows another embodiment of dividing plate 126, and this dividing plate 126 has the extra air dam 141 that is arranged on leading edge 136 places.Because air dam 141 has limited becoming a mandarin of close leading edge 136 places, cover and protect part 130 so removed among Fig. 6 dividing plate near leading edge, so that air can flow in the zone of disk spare.This meeting steering current leaves the actuator near leading edge 136.
For the embodiment shown in Fig. 9 and 10, should also be noted in that disc separator plate 126 supporting leading edges and trail limit air dam 141, and slow down by viscous force and to pass the speed of opening portion 128.All has sizable viscous force at air-flow (being shown in Fig. 6) between top cover and the top layer disk (160) and the air-flow between bottom disk (162) and the substrate housing.But these viscous forces usually can be not big as the viscous force between stationary barrier and the disk, and this is because the air clearance between stationary barrier and the disk is littler.
Therefore, the present invention always at a kind of air dam (as 140) that has to be used for the air flow deflector between one first spinning disk (as 160) and one second spinning disk (as 162) is left the stationary barrier (as 126) of a read/write head (as 122).Stationary barrier is fixed on the substrate housing (as 102).Stationary barrier has roughly rounded periphery, and its periphery is positioned to evenly engage with the substrate housing.Dividing plate has an opening portion (as 128) that radially extends, and described opening portion is set to inner peripheral from the outer peripheral edges of dividing plate, for an actuator one read/write head is placed to first disk to become a read/write to concern.On dividing plate, an air stream outlet (as 154) is arranged between outer peripheral edges and the inner peripheral, be used for reducing the aerodynamic drag on the spinning disk.In addition, dividing plate has a dividing plate that circumferentially is provided with to cover to protect part (as 130), and described covering protected part and be arranged on the outer peripheral edges of dividing plate, to be used for the most outer diameter of steering current around spinning disk.
For appended claim, the function that should be understood that, described " first device " be disclosed herein, comprise that the various embodiment of the stationary barrier 126 of trailing limit air dam 140 realize.
Should be understood that, even illustrated many feature and advantage of various embodiments of the invention in the description in front, the structural detail and the function of various embodiments of the invention have also been narrated together, but the content that is disclosed only is exemplary here, and within the maximum possible scope of the represented wide in range general implication of term of principle of the present invention, the described claim of statement, can modify aspect the structure of thin portion, especially part and the layout.For example, do not exceed protection scope of the present invention and principle, can change specific element and keep essentially identical functional simultaneously according to the special applications of disc separator plate.In addition; although preferred embodiment described herein at be the disc separator plate that is used for disc driver; but those skilled in the art that can admit, and do not exceed principle of the present invention and protection domain, and disclosed content also can be applied to other system.
People will be appreciated that, the present invention extremely be suitable for realizing described and wherein intrinsic target and advantage.Although having described for the purpose that here discloses is preferred embodiment at present, but can make many modifications, they say conspicuous to those those skilled in the art that, and they be included in disclosed and as defined by the appended claims within the principle of the invention.
Claims (10)
1. one kind is configured for being placed on one first rotatable rigid disks of a disc driver and the stationary barrier between the one second rotatable rigid disks, described disc driver has near the actuator of a head rest supporting first disk, and described stationary barrier comprises:
The one roughly rounded roughly rounded inner peripheral of outer peripheral edges and;
One leading edge and one is trailed the limit, among both each all extends to outer peripheral edges from inner peripheral, radially extend to an opening portion of inner peripheral to form one from outer peripheral edges, described opening portion extends between limit and the leading edge to adapt to head moving radially under the actuator effect trailing angledly; And
One be arranged on trail limit place trail the limit air dam, the described thickness of trailing the thickness of limit air dam greater than the stationary barrier remainder, and the major part of the air-flow that disk rotation is produced opens from opening portion deflection, to reduce the gas velocity near the head place significantly.
2. stationary barrier as claimed in claim 1 is characterized in that, also comprises a leading edge air dam that is arranged on the leading edge place, further to reduce the gas velocity near the head place.
3. stationary barrier as claimed in claim 1 is characterized in that, comprises also that a dividing plate that circumferentially is arranged on stationary barrier outer peripheral edges place covers to protect part, and it is used for the air-flow that the boot disk rotation is produced.
4. stationary barrier as claimed in claim 1 is characterized in that, leading edge is splayed to one second thickness less than stationary barrier remainder thickness.
5. stationary barrier as claimed in claim 1 is characterized in that, the profile of leading edge is configured to be contained in the motion of actuator described head when a bearing assembly pivots.
6. stationary barrier as claimed in claim 1 is characterized in that, also comprises extending the air stream outlet penetrate stationary barrier thickness, with the aerodynamic drag of the air-flow that reduces to pass through above stationary barrier.
7. disc driver, it comprises:
One substrate housing;
One spindle drive motor is by substrate housing supporting and have a rotatable propeller boss;
One first disk is installed on the propeller boss to rotate around a central axis;
One actuator is positioned near first disk by substrate housing supporting and with a read/write head; And
One stationary barrier, by the supporting of substrate housing, and near being roughly parallel to first disk, it comprises:
The one roughly rounded roughly rounded inner peripheral of outer peripheral edges and;
One leading edge and one is trailed the limit, among both each extends to outer peripheral edges from inner peripheral, radially extend to an opening portion of inner peripheral to form one from outer peripheral edges, described opening portion extends between limit and the leading edge to adapt to read/write head moving radially under the actuator effect trailing angledly; And
One be arranged on trail limit place trail the limit air dam, the described thickness of trailing the thickness of limit air dam greater than the stationary barrier remainder, and the major part of the air-flow that disk rotation is produced opens from opening portion deflection, to be limited in the air-flow in the stationary barrier opening portion significantly.
8. disc driver as claimed in claim 7 is characterized in that, stationary barrier also comprises a leading edge air dam that is arranged on the leading edge place, further to be limited in the air-flow in the stationary barrier opening portion.
9. disc driver as claimed in claim 7 is characterized in that, also comprises being parallel to first disk and being installed in the second disk to rotate around central axis on the spindle drive motor hub, and wherein stationary barrier is arranged between first and second disks.
10. disc driver as claimed in claim 7 is characterized in that, also comprises extending the air stream outlet penetrate stationary barrier thickness, with the aerodynamic drag of the air-flow that reduces to pass through above stationary barrier.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US27776101P | 2001-03-21 | 2001-03-21 | |
| US60/277,761 | 2001-03-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1524263A true CN1524263A (en) | 2004-08-25 |
| CN1288635C CN1288635C (en) | 2006-12-06 |
Family
ID=23062243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB018230628A Expired - Fee Related CN1288635C (en) | 2001-03-21 | 2001-10-31 | Disc separator plate with air dam |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JP2005509232A (en) |
| KR (1) | KR20030081531A (en) |
| CN (1) | CN1288635C (en) |
| DE (1) | DE10197217T5 (en) |
| GB (1) | GB2389700A (en) |
| WO (1) | WO2002077989A2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105187733A (en) * | 2014-06-06 | 2015-12-23 | 腾讯科技（北京）有限公司 | Video processing method, device and terminal |
| CN105593938A (en) * | 2013-05-13 | 2016-05-18 | 因特里-普莱克斯技术股份有限公司 | Disk separator plates and method of making disk separator plates for hard disk drives |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060146443A1 (en) * | 2004-12-30 | 2006-07-06 | Joseph Chang | Method and apparatus for airflow transition edges on noise dampers in a hard disk drive |
| JP2006286153A (en) * | 2005-04-05 | 2006-10-19 | Seiko Instruments Inc | Magnetic information recording device and recording medium driving device |
| JPWO2007043109A1 (en) * | 2005-09-30 | 2009-04-16 | 富士通株式会社 | Information storage device |
| JP4795853B2 (en) * | 2006-06-05 | 2011-10-19 | ヒタチグローバルストレージテクノロジーズネザーランドビーブイ | Magnetic disk unit |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4583213A (en) * | 1984-07-06 | 1986-04-15 | Storage Technology Partners Ii | Air shroud for data storage disks |
| JPH02126463A (en) * | 1988-11-04 | 1990-05-15 | Toshiba Corp | Magnetic disk device |
| WO1999058995A1 (en) * | 1998-05-11 | 1999-11-18 | Kmy Instruments, Llc | Disk head tester facility with non-repeatable runout reduction |
-
2001
- 2001-10-31 KR KR10-2003-7012292A patent/KR20030081531A/en not_active Application Discontinuation
- 2001-10-31 DE DE10197217T patent/DE10197217T5/en not_active Withdrawn
- 2001-10-31 JP JP2002575943A patent/JP2005509232A/en active Pending
- 2001-10-31 WO PCT/US2001/045452 patent/WO2002077989A2/en active Search and Examination
- 2001-10-31 CN CNB018230628A patent/CN1288635C/en not_active Expired - Fee Related
- 2001-10-31 GB GB0322152A patent/GB2389700A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105593938A (en) * | 2013-05-13 | 2016-05-18 | 因特里-普莱克斯技术股份有限公司 | Disk separator plates and method of making disk separator plates for hard disk drives |
| CN105593938B (en) * | 2013-05-13 | 2018-01-09 | 因特里-普莱克斯技术股份有限公司 | Disc separator plate and the method for manufacturing the disc separator plate for hard disk drive |
| CN105187733A (en) * | 2014-06-06 | 2015-12-23 | 腾讯科技（北京）有限公司 | Video processing method, device and terminal |
| CN105187733B (en) * | 2014-06-06 | 2019-03-01 | 腾讯科技（北京）有限公司 | Method for processing video frequency, device and terminal |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2002077989A3 (en) | 2003-07-10 |
| GB0322152D0 (en) | 2003-10-22 |
| WO2002077989A2 (en) | 2002-10-03 |
| GB2389700A (en) | 2003-12-17 |
| CN1288635C (en) | 2006-12-06 |
| DE10197217T5 (en) | 2004-04-15 |
| KR20030081531A (en) | 2003-10-17 |
| JP2005509232A (en) | 2005-04-07 |
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