CN1201979A - Disc drive - Google Patents
Disc drive Download PDFInfo
- Publication number
- CN1201979A CN1201979A CN98101251A CN98101251A CN1201979A CN 1201979 A CN1201979 A CN 1201979A CN 98101251 A CN98101251 A CN 98101251A CN 98101251 A CN98101251 A CN 98101251A CN 1201979 A CN1201979 A CN 1201979A
- Authority
- CN
- China
- Prior art keywords
- dish
- mentioned
- turntable
- chuck
- disk 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.)
- Pending
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Images
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
- G11B17/0288—Positioning or locking of single discs of discs rotating during transducing operation by means for moving the turntable or the clamper towards the disk
-
- 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
- G11B17/0282—Positioning or locking of single discs of discs rotating during transducing operation by means provided on the turntable
-
- 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
- G11B17/04—Feeding or guiding single record carrier to or from transducer unit
- G11B17/05—Feeding or guiding single record carrier to or from transducer unit specially adapted for discs not contained within cartridges
- G11B17/051—Direct insertion, i.e. without external loading means
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
- G11B2220/2537—Optical discs
Landscapes
- Holding Or Fastening Of Disk On Rotational Shaft (AREA)
Abstract
Provided is a disk driving device to perform the centering of a disk with high accuracy and to prevent the surface wobbling of the disk by performing the centering of the disk while pressing the disk with elastic pressing parts and also while pressing the tapered surface of a clamper against the peripheral part of the center hole of the disk.
Description
The present invention relates to disk drive device, this disk drive device can with the dimensional accuracy centering (aiming at disk center) of irrespectively coiling accurately of dish, and when high speed rotating, also can prevent vibration.
Usually, disk drive device is that dish is seized on both sides by the arms between turntable and chuck, with the rotation of motor-driven turntable.
Center hole is entrenched on the teat of being located on turntable or the chuck, the centering operation of coiling.
Though the gauge of dish and center bore by the sector specification specifies, also have the dish of specification outside dimension to sell in the reality.
Therefore, when in use heart hole dimension coils outward greater than the specification of given size, because the teat and the gap between the center hole of turntable or chuck are big, so the centering operation that can not coil accurately can produce vibration when high speed rotating.
In order to address this problem, real the opening in the clear 63-122935 communique of Japan disclosed a kind of structure, promptly, the conical sleeve that can move up and down is assembled into the center of turntable, with spring the conical surface of this conical sleeve is pressed against peritreme portion of disk center, like this, make and do not produce the gap between turntable or chuck and the center hole.
But, in this structure, conical sleeve can be assembled on the turntable movingly up and down, and will be with spring with conical sleeve always upward to the application of force, so, axial size increasing, and complex structure.In addition, owing to only seize the center hole periphery on both sides by the arms, so, be easy to generate card and rock problem.
Rock problem in order to solve this card, Japan is real to open flat 2-30150 communique and has disclosed a structure, in this structure, the vibrationproof ring is installed on the chuck by antirattle spring, in the outer fix of turntable periphery with vibrationproof ring pushing dish.
But because antirattle spring, vibrationproof ring are installed on the chuck, its structure is still very complicated, and is not can both obtain the effect of feeling relieved to the outer dish of all specifications.
The purpose of this invention is to provide a kind of disk drive device, this disk drive device is very thin, simple structure, also can feel relieved accurately for the outer dish of specification, and can prevent that card from rocking.For achieving the above object, the present invention takes following technical scheme:
A kind of disk drive device, it on the turning axle 11 of motor 10, will coil the center fixation of turntable 21 and seize on both sides by the arms between turntable 2 and chuck 3, with the rotation of motor-driven turntable, it is characterized in that,
On above-mentioned turntable, form circular recess 6 around axial line;
On above-mentioned chuck, form by center hole 23 and insert the circular protuberance 13 of above-mentioned circular recess 6 and the elasticity pushing portion 14,25,28 of extending, at the periphery formation conical surface 15 of this circular protuberance to the outside of this circular protuberance;
On the teat 5 of the inboard of the inboard of above-mentioned circular protuberance and above-mentioned circular recess, form mutually in the chimeric barrel surface 16,8 of direction of principal axis;
With above-mentioned elasticity pushing portion pushing dish, simultaneously, the above-mentioned conical surface is pressed against the edge portion of center hole, with the centering operation of coiling.
Described disk drive device is characterized in that, makes the apical position of above-mentioned teat 5 consistent substantially with the dish mounting surface of turntable.
Described disk drive device is characterized in that, above-mentioned elasticity pushing portion is made of 3 above shell fragments 14 that are radial extension with equal angles at interval.
Described disk drive device is characterized in that, above-mentioned elasticity pushing portion 25 is become roughly circular plate type, with near portion's pushing dish its periphery.
Described disk drive device is characterized in that, above-mentioned elasticity pushing portion 28 is become conical shaped, with near portion's pushing dish its periphery.
Described disk drive device is characterized in that, on the position of the pushing dish of above-mentioned elasticity pushing portion 25,28, the big friction means of friction factor 26 is installed.
Described disk drive device is characterized in that, above-mentioned elasticity pushing portion is at turntable periphery pushing dish on the position in the outside also.
In the disk drive device of the present invention, on turntable, form circular recess around axial line, on chuck, form by center hole and insert the circular protuberance of above-mentioned circular recess and the elasticity pushing portion of extending, and form the conical surface in the periphery of this circular protuberance to this circular protuberance outside.In addition, on the teat of the inboard of the inboard of circular protuberance and circular recess, form chimeric barrel surface mutually, with above-mentioned elasticity pushing portion pushing dish, prevent that the face that coils from rocking, simultaneously, the above-mentioned conical surface is pressed against the edge portion of center hole, the centering of coiling.
In the above-mentioned structure, be respectively formed at the barrel surface on turntable and the chuck, make accurately with high sense of responsibility by the fabricator who installs, so, make turntable consistent easily with the axial line of chuck.The centering operation of dish is to press against the edge portion of center hole and can carry out accurately by the conical surface with chuck.And, because with the elasticity pushing portion of chuck outer fix pushing dish at the conical surface, so, can prevent that card from rocking.
In addition, because the conical surface and elasticity pushing portion and chuck are integrally formed, so, construct very simply, can do very thinly.
In addition, the apical position of above-mentioned teat is consistent with the dish mounting surface of turntable, as long as dish is moved with being parallel to mounting surface, just can easily transport dish.Therefore, dish and turntable are moved towards direction of principal axis, can load onto dish, can do whole device thinner as long as chuck is just moved at direction of principal axis.
Can be in the outside of the conical surface, be radial extension and constitute above-mentioned elasticity pushing portion with the shell fragment equal angles compartment of terrain more than 3, also can be in the outside of the conical surface, form the part of circular plate type slightly or virtually conical shape, with near the portion of its periphery pushing dish.
In addition, owing to, the big friction means of friction factor is installed, can prevent from effectively to skid between dish and the chuck at the position of the pushing dish of elasticity pushing portion.
In addition, in elasticity pushing portion,, can prevent easily that card from rocking at the deep position pushing dish of trying one's best.Can be at the outer fix pushing dish of turntable periphery.
Good effect of the present invention:
According to the present invention, be respectively formed at the barrel surface on turntable and the chuck, can make accurately with high sense of responsibility by the device fabricator, so, make turntable consistent easily with the axial line of chuck.Press against the center peritreme portion of dish, the just centering of realization dish accurately by the conical surface with chuck.And the elasticity pushing portion of chuck is at the outer fix pushing dish of the conical surface, so, can prevent that the face that coils from rocking.
Because the conical surface and elasticity pushing portion and chuck are integrally formed, so, construct very simple, and very thin.
In addition, the apical position of protuberance (teat) is consistent with the dish mounting surface of turntable, as long as dish is moved with being parallel to mounting surface, just can easily transport dish.Therefore, dish and turntable are moved towards direction of principal axis, can load onto dish, can do whole device thinner as long as chuck is just moved at direction of principal axis.
When constituting above-mentioned elasticity pushing portion, because the easy deflection of these shell fragments, so pushing dish gently with the shell fragment more than 3.When elasticity pushing portion is formed the summary circular plate type, can reduce the air resistance in the high speed rotating, prevent to cause the torsional deformation of elasticity pushing portion because of air resistance.In addition, owing to adopt friction means, can make between dish and the chuck non-sliply, maintain dish more effectively.
When virtually conical shape is made by elasticity pushing portion, the effect when also having circular plate type, but in the pushing force reinforcement to dish, have more effect.
In addition, at the position of the pushing dish of elasticity pushing portion, because the big friction means of friction factor is installed, so, skid between preventing elasticity pushing portion effectively and coiling.
In addition, in elasticity pushing portion, deep position pushing dish can prevent easily that the face that coils from rocking trying one's best.At the outer fix pushing dish of turntable periphery, prevent that the effect that card rocks is better.
Below embodiments of the present invention will be described in detail with reference to the accompanying drawings:
Fig. 1 is the skiagraph of expression the present invention the 1st embodiment.
Fig. 2 is the planimetric map of the chuck in embodiment illustrated in fig. 1.
Fig. 3 be embodiment illustrated in fig. 1 in, expression is drawn back the skiagraph of chuck state from turntable.
Fig. 4 is the skiagraph of expression the present invention the 2nd embodiment.
Fig. 5 is the ground plan of the chuck in embodiment illustrated in fig. 2.
Fig. 6 is the skiagraph of expression the present invention the 3rd embodiment.
Below, the 1st embodiment of the present invention is described earlier.
Fig. 1 is that expression is being seized the skiagraph that coils 1 state on both sides by the arms with turntable 2 and chuck 3.Fig. 2 is the planimetric map of chuck 3.
At the center of turntable 2, form cylindrical shape teat, be protuberance 5 with axis hole 4, around protuberance 5, form circular recess 6 towards upper shed.Outer peripheral edges portion above the turntable 2 is a dish mounting surface 7, the apical position of protuberance 5 and dish mounting surface 7 basically identicals.The periphery of protuberance 5 is barrel surface 8, and the bottom corner of barrel surface 8 is cavetto or formation chamfering 9 slightly.
The turning axle 11 of motor 10 is chimeric to be fixed in the axis hole 4 of turntable 2.Motor 10 is fixed on the following side on chassis 12, and turning axle 11 stretches out in the upper face side on chassis 12, and turntable 2 is positioned at the upper face side on chassis 12.On the chassis 12, the light picker (figure does not show) that is used for reading dish 1 information is installed.
Chuck 3 has circular protuberance 13 in its lower section.3 shell fragments 14 have been formed in the outside of circular protuberance 13.This shell fragment 14 constitutes elasticity pushing portion, is radial extension at interval with equal angles.The periphery of circular protuberance 13 becomes the conical surface 15 that diminishes towards the below diameter, and the interior week of circular protuberance 13 is barrel surface 16.The following vertex angle part of barrel surface 16 is cavetto or formation chamfering 17 slightly.Form flanges 18 in chuck 3 upper end peripheries, be formed centrally projection 19 in the above.
20 is chuck elevating mechanisms among the figure.Elevating mechanism 20 have pushing portion 21 and on draw portion 22.The above-mentioned projection 19 of pushing portion 21 pushings is pushed chuck 3 to turntable 2 sides, uses and draws portion 22 to engage with above-mentioned flange 18 as illustrated in fig. 3, and chuck 3 is drawn back from turntable 2.
The state that chuck 3 is drawn back from turntable 2 with elevating mechanism 20, the dish 1 and the dish mounting surface 7 of turntable 2 are transported to abreast the top slightly (for example 0.5mm is following) position (Fig. 3) of mounting surface 7, fall chuck 3 again, circular protuberance 13 inserts in the circular recess 6 of turntable 2 by the center pit 23 of dish 1.Chuck 3 and turntable 2 both sides' barrel surface 16,8 is by 17,9 guidings of fillet or chamfering, and is chimeric at direction of principal axis, simultaneously, the following leading section of 3 shell fragments 14 the periphery outer fix of turntable 2 with join above the dish 1.
Then, the projection 19 of chuck 3 is made 3 shell fragment 14 deflections on one side by the pushing of the pushing portion 21 of elevating mechanism 20, on one side by taper surface 15 will coil 1 and chuck 3 feel relieved.At this state, 3 its elastic force pushing dishes 1 of shell fragment 14 usefulness make the following of dish 1 and dish mounting surface 7 connect airtight as illustrated in fig. 1.At this moment, turntable 2 makes axial line consistent with chuck 3 by means of the chimeric of both sides' barrel surface 16,8, and dish 1 and chuck 3 make the axial line unanimity by the center pit 23 edge portions of the conical surface 15 pushing dishes 1, so turntable 2, chuck 3 and the axial line that coils 1 three are consistent accurately.
At this state, drive turntables 2 rotations by motor 10, even coil 1 high speed rotating, turntable 2, chuck 3 and to coil 1 three's axial line also consistent accurately, and also the elastic force pushing dish 1 of shell fragment 14 is not so 1 face that coils rocks yet.
In the foregoing description, be to constitute elasticity pushing portion with 3 shell fragments 14, but also available shell fragment formation elasticity pushing portion more than 4, also available following structure.
Fig. 4 and embodiment illustrated in fig. 5 in, on chuck 3, form the slightly elasticity pushing portion 25 of circular plate type, the big friction means 26 of friction factor is installed by portion near its periphery, by this friction means 26 at turntable 2 periphery outer fix pushing dishes 1.
Except circular plate type elasticity pushing portion 25 and friction means 26 mounted thereto, all the other structures are same as the previously described embodiments, and these parts are annotated with same numeral in Fig. 4 and Fig. 5, and its explanation is omitted.
Like this,, can reduce the air resistance in the high speed rotating, prevent the torsional deflection of the elasticity push part that causes because of air resistance etc. owing to adopt the elasticity pushing portion 25 of circular plate type.In addition, owing to adopt friction means 26, non-slip between dish 1 and chuck 3, can maintain dish 1 more effectively.
Fig. 6 is the embodiment that virtually conical shape elasticity pushing portion 28 is adopted in expression.By near the portion periphery of conical elasticity pushing portion 28, at the outer fix pushing dish 1 of turntable 2 peripheries.
This embodiment is except conical elasticity pushing portion 28, and all the other structures are identical with above-mentioned 2 embodiment, and identical part is annotated with same numeral, and its explanation is omitted.
Like this, owing to adopt the elasticity pushing portion 28 of virtually conical shape, bigger than the elasticity pushing portion of circular plate type slightly to coiling 1 pushing force.
According to the present invention, be respectively formed at the barrel surface on turntable 2 and the chuck 3, can make accurately with high sense of responsibility by the device fabricator, so, make turntable 2 consistent easily with the axial line of chuck 3.Press against the center peritreme portion of dish, the just centering of realization dish 1 accurately by the conical surface with chuck 3.And the elasticity pushing portion of chuck 3 is at the outer fix pushing dish 1 of the conical surface, so, can prevent to coil 1 face and rock.
Because the conical surface and elasticity pushing portion and chuck 3 are integrally formed, so, construct very simple, and very thin.
In addition, the apical position of protuberance (teat) 5 is consistent with the dish mounting surface 7 of turntable 2, moves as long as 1 dish is parallel to mounting surface 7 ground, just can easily transport dish 1.Therefore, dish 1 and turntable 2 are moved towards direction of principal axis, coil 1, can do whole device thinner as long as make chuck 3 move just can load onto at direction of principal axis.
When constituting above-mentioned elasticity pushing portion, because the easy deflection of these shell fragments, so pushing dish 1 gently with the shell fragment more than 3.When elasticity pushing portion is formed the summary circular plate type, can reduce the air resistance in the high speed rotating, prevent to cause the torsional deformation of elasticity pushing portion because of air resistance.In addition, owing to adopt friction means, can make between dish 1 and the chuck 3 non-sliply, maintain more effectively and coil 1.
When virtually conical shape is made by elasticity pushing portion, the effect when also having circular plate type, but, have more effect to coiling on 1 pushing force strengthens.
In addition, at the position of the pushing dish 1 of elasticity pushing portion, because the big friction means of friction factor is installed, so, skid between preventing elasticity pushing portion effectively and coiling.
In addition, in elasticity pushing portion, deep position pushing dish can prevent easily that the face that coils from rocking trying one's best.At the outer fix pushing dish of turntable periphery, prevent that the effect that card rocks is better.
Claims (7)
1. disk drive device, it on the turning axle (11) of motor (10), will coil the center fixation of turntable (2) (1) and seize on both sides by the arms between turntable (2) and chuck (3), with the rotation of motor-driven turntable, it is characterized in that,
On above-mentioned turntable, form circular recess (6) around axial line;
On above-mentioned chuck, form by center hole (23) and insert the circular protuberance (13) of above-mentioned circular recess (6) and the elasticity pushing portion (14,25,28) of extending, at the periphery formation conical surface (15) of this circular protuberance to the outside of this circular protuberance;
On the teat (5) of the inboard of the inboard of above-mentioned circular protuberance and above-mentioned circular recess, form mutually in the chimeric barrel surface of direction of principal axis (16,8);
With above-mentioned elasticity pushing portion pushing dish, simultaneously, the above-mentioned conical surface is pressed against the edge portion of center hole, with the centering of coiling.
2. disk drive device as claimed in claim 1 is characterized in that, makes the apical position of above-mentioned teat (5) consistent substantially with the dish mounting surface of turntable.
3. disk drive device as claimed in claim 1 is characterized in that, above-mentioned elasticity pushing portion is made of 3 the above shell fragments (14) that are radial extension with equal angles at interval.
4. disk drive device as claimed in claim 1 is characterized in that, above-mentioned elasticity pushing portion (25) is become roughly circular plate type, with near portion's pushing dish its periphery.
5. disk drive device as claimed in claim 1 is characterized in that, above-mentioned elasticity pushing portion (28) is become conical shaped, with near portion's pushing dish its periphery.
6. disk drive device as claimed in claim 1 is characterized in that, on the position of the pushing dish of above-mentioned elasticity pushing portion (25,28), the big friction means of friction factor (26) is installed.
7. disk drive device as claimed in claim 1 is characterized in that, above-mentioned elasticity pushing portion is than turntable periphery pushing dish on the position in the outside also.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP169436/97 | 1997-06-11 | ||
| JP9169436A JPH113553A (en) | 1997-06-11 | 1997-06-11 | Disk driving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1201979A true CN1201979A (en) | 1998-12-16 |
Family
ID=15886576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98101251A Pending CN1201979A (en) | 1997-06-11 | 1998-04-03 | Disc drive |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPH113553A (en) |
| KR (1) | KR19990006339A (en) |
| CN (1) | CN1201979A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100489981C (en) * | 2004-04-27 | 2009-05-20 | 松下电器产业株式会社 | Disk drive unit, and information recording and regeneration apparatus |
| CN103204057A (en) * | 2012-01-16 | 2013-07-17 | 神钢建设机械株式会社 | Driving device for hybrid working machine |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100700611B1 (en) * | 2001-11-27 | 2007-03-28 | 엘지전자 주식회사 | Disc player having apparatus for clamping disc |
| KR100600247B1 (en) * | 2004-10-06 | 2006-07-13 | 주식회사 대우일렉트로닉스 | Disc clamp of an optical disc player |
| JP2007193853A (en) | 2006-01-16 | 2007-08-02 | Fujitsu Ten Ltd | Disk playback device |
| US8657273B2 (en) | 2008-08-12 | 2014-02-25 | Mitsubishi Heavy Industries, Ltd. | Jig |
-
1997
- 1997-06-11 JP JP9169436A patent/JPH113553A/en not_active Withdrawn
-
1998
- 1998-02-05 KR KR1019980003303A patent/KR19990006339A/en not_active Application Discontinuation
- 1998-04-03 CN CN98101251A patent/CN1201979A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100489981C (en) * | 2004-04-27 | 2009-05-20 | 松下电器产业株式会社 | Disk drive unit, and information recording and regeneration apparatus |
| CN103204057A (en) * | 2012-01-16 | 2013-07-17 | 神钢建设机械株式会社 | Driving device for hybrid working machine |
| US9664107B2 (en) | 2012-01-16 | 2017-05-30 | Kobelco Construction Machinery Co., Ltd. | Driving device for hybrid working machine |
Also Published As
| Publication number | Publication date |
|---|---|
| KR19990006339A (en) | 1999-01-25 |
| JPH113553A (en) | 1999-01-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |