CN100547665C - Magnetic disc press block and disc driver - Google Patents
Magnetic disc press block and disc driver Download PDFInfo
- Publication number
- CN100547665C CN100547665C CNB2006100630393A CN200610063039A CN100547665C CN 100547665 C CN100547665 C CN 100547665C CN B2006100630393 A CNB2006100630393 A CN B2006100630393A CN 200610063039 A CN200610063039 A CN 200610063039A CN 100547665 C CN100547665 C CN 100547665C
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- China
- Prior art keywords
- disk
- press block
- magnetic disc
- annular magnetic
- contact
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Abstract
The present invention relates to a kind of magnetic disc press block and disc driver, the motor, the rotation that comprise base, are installed in base are installed in the disk of motor, and described disk is fixed on the motor by an annular magnetic disc press block.The bottom outer rim of described annular magnetic disc press block is provided with the surface of contact of annular, has an angle that inwardly makes progress between the card of described surface of contact and disk, after making it work as described annular magnetic disc press block fixed disk, described surface of contact is fitted on the card of disk the surface of contact of the annular of annular magnetic disc press block fully because of stress and deformation makes.The disk of high stability disc driver of the present invention adopts face contact type to fix, and has reduced the disk distortion, makes that the drive read write data is more stable.
Description
[technical field]
The present invention relates to a kind of disc driver, specifically relate to a kind of disc driver that reduces the disk distortion.
[background technology]
Traditional disc driver comprises that at least one is installed in the disk of rotor propeller boss.Described disk is axial by clamping fixture along propeller boss, as briquetting, is fixedly mounted on the support edge of propeller boss bottom, if install a plurality of disks, then separates by spacer ring between the adjacent discs.After disk is fixed on the propeller boss, can be along with the motor rotor high speed rotating.In traditional disk installation method,, on the disk circumferencial direction, form some pressure contact points, but the mode of this some contact also can increase the flexural deformation of disk own simultaneously as installation sheet by annular magnetic disc press block.Please refer to Fig. 1, be illustrated as the annular magnetic disc press block of traditional disk drives and the stressed synoptic diagram of disk.One annular magnetic disc press block 11 is placed on the center of disk 10 cards, before described annular magnetic disc press block 11 is unfixing as yet, and the outer rim S of annular magnetic disc press block 11
AThe contact card; As the snap-in force D of described annular magnetic disc press block 11 at fixture
AUnder the effect, to direction C
BMove and during distortion, the outer ring of annular magnetic disc press block 11 can apply a pressure F to disk 10
AAt this moment, the outer rim S of annular magnetic disc press block 11
ACan be along with C
ADirection promotes, and puts with the contact position formation between the disk 10 at annular magnetic disc press block 11 and contacts P
APoint contact P
ACan cause the B that disk 10 is making progress
ADirection is distorted, and this distortion occurs in circumferencial direction rather than radially.And the point of fixity between each annular magnetic disc press block 11 and the disk 10 all can have distortion, so can form wavy distortion at the circumferencial direction of disk 10.
Usually, after annular magnetic disc press block is fixed on disk on the rotor, need on the card of disk, inscribes some concentric magnetic tracks and be used for the servo-information that magnetic head is sought rail.Described servo-information is to be used for exactly with the particular track of head position in the card of disk.So the torsional deformation that inappropriate annular magnetic disc press block can additionally increase disk in annular track direction is as the annular magnetic disc press block of a contact.Disk is high speed rotating when work, and micro displacement takes place during the disk rotation clamping disk that some contact annular magnetic disc press block can't be stable easily.And the torsional deformation of disk can make magnetic head can not remain consistent flying height above disk, and then influences magnetic head and read and write data from disk track.And the distortion of disk can cause the magnetic track of follow-up inscription irregular, destroys the flatness of the card of disk.Simultaneously, the disk fixed form of traditional some contact also can influence the anti-seismic performance of disk in off working state.Along with disc driver becomes more and more littler, even the small deformation of disk can make that also magnetic track becomes irregular, can't accurately write servo-information, increased the production fraction defective of disc driver.At the existing disappearance of above-mentioned traditional magnetic disk annular magnetic disc press block, demand proposing a kind of disk annular magnetic disc press block that overcomes the disk distortion urgently, thereby can improve the stability of disk on the whole.
[summary of the invention]
The objective of the invention is to propose a kind of new the reduced disk distortion and the stable disc driver that reads and writes data.Described disc driver adopts new disk erecting device, changes traditional some contact and is fixed as face contact type and fixes, and has reduced the disk distortion, makes the drive read write data stable.
The technical scheme that realizes above-mentioned purpose is: a kind of annular magnetic disc press block, the bottom outer rim of annular magnetic disc press block is provided with the surface of contact of annular, described surface of contact has an inclination angle that inwardly makes progress (a), make it work as described annular magnetic disc press block when being used for fixing disk, described surface of contact is fitted on the card of disk the surface of contact of the annular of annular magnetic disc press block fully because of stress and deformation makes.Described inclination angle is greater than zero degree and be less than or equal to three degree.The disk of high stability disc driver of the present invention adopts face contact type to fix, and has reduced the disk distortion, makes that the drive read write data is more stable.
A kind of high stability disc driver, the motor, the rotation that comprise base, are installed in base are installed in the disk of motor, and described disk is fixed on the motor by an annular magnetic disc press block.The bottom outer rim of described annular magnetic disc press block is provided with the surface of contact of annular, has an angle that inwardly makes progress between the card of described surface of contact and disk, after making it work as described annular magnetic disc press block fixed disk, described surface of contact is fitted on the card of disk the annular contact surface of annular magnetic disc press block fully because of stress and deformation makes.
The present invention adopts technique scheme, its beneficial technical effects is: the bottom outer rim of disc driver magnetic disc press block of the present invention is provided with the surface of contact of annular, described surface of contact has an inclination angle that inwardly makes progress, behind described annular magnetic disc press block fixed disk, described surface of contact is fitted on the card of disk the surface of contact of the annular of annular magnetic disc press block fully because of stress and deformation makes, thereby changing traditional some contact is fixed as face contact type and fixes, reduce the disk distortion, made the drive read write data stable.The described disk of disc driver of the present invention is that face contacts with annular magnetic disc press block, can stop disk to be moved because of rotation.Disc driver of the present invention has improved the vibration resistance of disc driver.High stability disc driver of the present invention has been eliminated the deformation of disk, and it is consistent to make that magnetic head and distance between the card remain, thereby has improved the stability that magnetic head reads and writes data.
[description of drawings]
Below by embodiment also in conjunction with the accompanying drawings, the present invention is described in further detail:
Fig. 1 is the stress deformation synoptic diagram of traditional disk drives.
Fig. 2 is the driver portion combination of components stereographic map of high stability disc driver of the present invention.
Fig. 3 is the annular magnetic disc press block vertical view that high stability disc driver of the present invention has the inclination angle.
Fig. 4 is the annular magnetic disc press block side cross-sectional view with inclination angle of high stability disc driver of the present invention.
Fig. 5 is the local enlarged diagram of G among Fig. 4.
Fig. 6 is the annular magnetic disc press block stereographic map with inclination angle of high stability disc driver of the present invention.
Fig. 7 is the annular magnetic disc press block of high stability disc driver of the present invention and the stressed synoptic diagram of disk.
Fig. 8 is the fixedly synoptic diagram that the disk of high stability disc driver of the present invention is installed in propeller boss.
Fig. 9 is the disk flatness curve synoptic diagram of high stability disc driver of the present invention.
Figure 10 is the side cross-sectional view that the disk of high stability disc driver of the present invention is not fixed and clamped.
Figure 11 is the side cross-sectional view that the disk of high stability disc driver of the present invention is fixed and clamped.
[embodiment]
A kind of high stability disc driver 70 in conjunction with Fig. 2 to Figure 11, is used for data storage, and it comprises that a base 71, a motor (figure does not show), are installed in the propeller boss 34 of motor and the disk 10 of some storage data.Described disk 10 is fixed on the top of propeller boss 34 by an annular magnetic disc press block 31.
Please refer to Fig. 2, the base 71 of described disc driver 70 is an aluminium alloy castings, is processed into housing by milling.Described base 71 is equipped with motor, disk 10, actuator, magnetic head, circuit or the like.Described annular magnetic disc press block 31 is fixedly mounted on disk 10 on the propeller boss of motor.
Please refer to Fig. 3 to Fig. 6, described disk annular magnetic disc press block 31 centers have an endoporus 52, and endoporus 52 peripheries form inner edge 51.The propeller boss 34 that the endoporus 52 of annular magnetic disc press block 31 can pass motor is pressed together on disk 10 cards again.Offer some fixed orifices 33 near the inner edge 51 of described annular magnetic disc press block 31, the plurality of fixed part can pass described fixed orifice 33 on the propeller boss 34 of locking at motor.Fixed orifice 33 in the present embodiment is six, also can be three or other number, also can partly use or all use, as long as the fixture of corresponding fixed orifice 33 can be with annular magnetic disc press block 31 stable being fixed on the propeller boss 34.Oval outer rim 57 bottoms of described annular magnetic disc press block have one and form the surface of contact 55 that compensates the inclination angle.Form an annular section to spacing collar 58 after described inner edge 51 extends radially outward a segment distance, described annular section is called the counterbore district, and described fixed orifice 33 all is opened in the described counterbore district.
Fig. 4 is the sectional side view of annular magnetic disc press block 31, and in the present embodiment, the angle of surface of contact 55 its skews at described formation compensation inclination angle is 3 degree.Require or annular magnetic disc press block 31 is subjected to the difference of fixture pressure according to the difference of fixture, the angle of described surface of contact 55 skews also can be different, and it is directly proportional with the snap-in force size of annular magnetic disc press block 31.
Fig. 5 is the partial enlarged drawing of G portion among Fig. 4, and the deviation angle of described surface of contact 55 is represented with a, is 3 degree in the deviation angle a present embodiment, and described deviation angle a extends to inside center from outer side edges 61 beginnings of annular magnetic disc press block 31 always.When described annular magnetic disc press block 31 fixedly the time, described deviation angle a is fitted on the card 56 of disk 10 at last along with the distortion of annular magnetic disc press block 31 changes to 0 degree from 3 degree.When described surface of contact 55 was fitted on disk 10 cards fully, its length was counted D, thereby was fitted in formation face contact on the card 56 equably.Described annular magnetic disc press block 31 also is provided with a knuckle 60 above outer side edges 61, described knuckle 60 is parallel with the end face 59 of annular magnetic disc press block 31.
Fig. 6 is the vertical view of annular magnetic disc press block, and described outer side edges 61 is substantially perpendicular to the surface of contact 55 that forms the compensation inclination angle.Knuckle 60 is essentially a plane, and described oval-shaped outer rim 57 connects the end face 59 of described knuckle 60 and described annular magnetic disc press block 31.
Please refer to Fig. 7 to Fig. 8, at initial position, that is described annular magnetic disc press block 31 only is placed on disk 10 cards, and when not being subjected to the snap-in force of fixture 35, the outside of the surface of contact 55 of described annular magnetic disc press block 31 contacts 32 with disk 10 card points.Described deviation angle a is that 3 degree do not change as yet.Snap-in force D when fixture 35
CWhen being applied on the annular magnetic disc press block 31, the inside of annular magnetic disc press block 31 is along C
BDirection deforms mobile, and at this moment, deviation angle a also along with narrowing down to 0 degree gradually from 3 degree, represent by the 0 position with dashed lines of spending time annular magnetic disc press block 31.After this, the surface of contact 55 that forms the compensation inclination angle is fitted in disk 10 cards fully, and the length of contact is represented with D.So annular magnetic disc press block 31 has just become the face contact from a contact, and annular magnetic disc press block 31 is applied to the pressure F of disk 10
CBe evenly distributed on the surface of contact 55.From the stress deformation angle of disk 10, this moment, disk 10 did not deform at circumferencial direction, and is the most inboard to the outermost taper-deformation that radially is seen as from disk 10, but this kind distortion does not influence the reading and writing data of driver to disk 10.
Please refer to Fig. 9, showed the flatness curve on disk of the present invention plane and traditional magnetic disk plane among the figure.41 is disk flatness curve of the present invention, and 42 is the disk flatness curve of traditional magnetic disk.The present invention makes that the pressure distribution of 31 pairs of disks 10 of annular magnetic disc press block is even owing to adopted formation compensation inclination angle surface of contact 55, and from disk flatness curve 41, disk 10 cards are evenly distributed, no abnormal fluctuating.And adopt traditional disk erecting device, from disk flatness curve 42, it is very inhomogeneous that its disk plane just distributes, and can directly influence magnetic head and read and write data on disk.
Please refer to Figure 10 and Figure 11, showed the disk force and deformation state among two figure respectively.The annular magnetic disc press block 31 of Figure 10 is an original state, that is described annular magnetic disc press block 31 only is placed on disk 10 cards, is not subjected to the snap-in force of fixture 35, and at this moment, disk stretches naturally, and is circumferential and radially all do not have a distortion.The annular magnetic disc press block 31 of Figure 11 is a stationary state, that is described annular magnetic disc press block 31 is fixed on the propeller boss 34 by fixture 35, annular magnetic disc press block 31 distortion this moment, surface of contact 55 vertically is pressed in disk 10 cards equably, at this moment, disk is subjected to the uniform pressure of annular magnetic disc press block 31 surface of contact 55, circumferential nothing distortion, the most inboard from disk 10 to the outermost taper-deformation that radially is seen as, the level of disk 10 cards is changed to h, in the present embodiment, the scope that changes through measuring h is the 600-750 micron, but the variation range of described h does not influence the reading and writing data of driver to disk 10.
Claims (3)
1, a kind of annular magnetic disc press block, it is characterized in that: the bottom outer rim of annular magnetic disc press block is provided with the surface of contact of annular, described surface of contact has an inclination angle that inwardly makes progress (a), make it work as described annular magnetic disc press block when being used for fixing disk, described surface of contact is fitted on the card of disk the surface of contact of the annular of annular magnetic disc press block fully because of stress and deformation makes.
2, annular magnetic disc press block according to claim 1 is characterized in that: described inclination angle is spent smaller or equal to three greater than zero degree.
3, a kind of high stability disc driver, the motor, the rotation that comprise base, are installed in base are installed in the disk of motor, described disk is fixed on the motor by an annular magnetic disc press block, it is characterized in that: the bottom outer rim of described annular magnetic disc press block is provided with the surface of contact of annular, has an angle that inwardly makes progress between the card of described surface of contact and disk, after making it work as described annular magnetic disc press block fixed disk, described surface of contact is fitted on the card of disk the surface of contact of the annular of annular magnetic disc press block fully because of stress and deformation makes.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100630393A CN100547665C (en) | 2006-10-09 | 2006-10-09 | Magnetic disc press block and disc driver |
| HK08105030.3A HK1110695A1 (en) | 2006-10-09 | 2008-05-06 | Disk clamp and disk drive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100630393A CN100547665C (en) | 2006-10-09 | 2006-10-09 | Magnetic disc press block and disc driver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101067946A CN101067946A (en) | 2007-11-07 |
| CN100547665C true CN100547665C (en) | 2009-10-07 |
Family
ID=38880471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100630393A Expired - Fee Related CN100547665C (en) | 2006-10-09 | 2006-10-09 | Magnetic disc press block and disc driver |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN100547665C (en) |
| HK (1) | HK1110695A1 (en) |
-
2006
- 2006-10-09 CN CNB2006100630393A patent/CN100547665C/en not_active Expired - Fee Related
-
2008
- 2008-05-06 HK HK08105030.3A patent/HK1110695A1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| HK1110695A1 (en) | 2008-07-18 |
| CN101067946A (en) | 2007-11-07 |
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