CN1212615C - Disc holding and driving devices - Google Patents
Disc holding and driving devices Download PDFInfo
- Publication number
- CN1212615C CN1212615C CN 03137740 CN03137740A CN1212615C CN 1212615 C CN1212615 C CN 1212615C CN 03137740 CN03137740 CN 03137740 CN 03137740 A CN03137740 A CN 03137740A CN 1212615 C CN1212615 C CN 1212615C
- Authority
- CN
- China
- Prior art keywords
- clamping
- motor
- driving wheel
- disc
- wheel
- 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
Links
- 238000009434 installation Methods 0.000 claims description 6
- 230000003287 optical effect Effects 0.000 description 16
- 230000006870 function Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 230000000274 adsorptive effect Effects 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
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
- G11B17/04—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
- 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
- G11B17/0284—Positioning or locking of single discs of discs rotating during transducing operation by clampers
Landscapes
- Holding Or Fastening Of Disk On Rotational Shaft (AREA)
Abstract
The present invention provides a disc holding and a driving devices, which belongs to the technical field of information storage. The present invention comprises a motor, more than two holding wheels, wherein the holding wheels are distributed along the circumference of the outer ring of a disc. One of the holding wheels of the present invention can be a driving wheel, and the motor and the driving wheel are coaxial. The present invention can also drive the disc by the driving wheel which is arranged in a coaxial state with the motor driving one of the holding wheels to rotate. The present invention can also drive the disc at the center of the disc by the driving wheel which is arranged in a coaxial state with the motor, and the holding wheel only has a holding function. The disc holding and the driving devices designed by the present invention can effectively reduce the non-writing field area which is reserved in the disc for the holding device so as to provide a new possibility for further raising the storage capacity of the disc.
Description
Technical field the present invention relates to a kind of CD clamping and drive unit, belongs to the optical disk system technical field.
The background technology optical disc storage is one of main means of high density information storage.CD drive is optical disc storage and a fetch equipment common and the most commonly used.CD drive can be made up of wherein optical system, Mechatronic Systems and Circuits System, with the numerical information that is stored in the CD, by the decoding and the reproduction of software and hardware, and by outlet terminal output, and the processing of numerical information by software and hardware recorded in the CD.
In order correctly recording information on the CD, or to read information, in all CD drive, must to possess the clamping and the drive unit of CD from CD.Usually, the CD clamping of prior art and drive unit are as shown in Figure 1.This clamping and drive unit comprise: spindle motor 4; Driving wheel 3, the rotatable upper end that is arranged on motor 4 of this driving wheel, and be close to the non-face that writes of CD 1 lower surface inboard; Holder 2 is used to be close to the non-face that writes of CD 1 upper surface inboard, and these holder 2 inside have magnetic, can form magnetic adsorptive powers with driving wheel 3 is common, thereby CD 1 is clamped in above the driving wheel 3; In the process that CD reads and writes, drive driving wheel 3 by motor 4, and the holding force of borrowing driving wheel 3 and holder 2 to be applied to 1 liang of inner side surface of CD jointly, drive CD and rotate according to certain speed.
In above structure, holder 2, driving wheel 3 and motor 4 have been realized location, clamping and the driving function of CD jointly.Existing disk clamp device according to said apparatus constitutes because its holding force is the rotating force of motor-driven CD, for guaranteeing reliable and stable control CD speed, must provide a holding force greater than minimum permissible value to CD; Simultaneously for making CD in the process that is held, not produce local excessive deformation, holding force needs to be distributed in clamping surface with more all having, thereby make the clamping device of prior art and the optical disk surface contact area can not be too small, promptly the non-face that writes of disc upper and lower surface inboard can not be too small.This setup makes optical disc surface must reserve suitable area as the non-face that writes, and uses for clamping device, has so just reduced the useful area of optical disc surface information record.
Summary of the invention the objective of the invention is to propose a kind of CD clamping and drive unit, structure to existing CD clamping and drive unit makes improvements, make clamping only have small size to contact with the outward flange interaction of optical disk or at the disc center with driving mechanism, thereby reduce the size of the contact area of clamping that is used for disc between optical disk and the clamping device and location, improve the memory by using rate of optical disk.
CD clamping and drive unit that the present invention proposes, this device comprise motor, four or more clamping wheel, and described each clamping wheel is along CD outer ring circle distribution, and a coaxial installation during described motor is taken turns with described clamping is used to drive CD.
Another kind of CD clamping and drive unit that the present invention proposes, comprise motor, three or three above clamping wheels, described each clamping wheel is along CD outer ring circle distribution, also comprise a driving wheel, this driving wheel and the interlock mutually of described clamping wheel, and be in the outside of CD, described motor and the coaxial installation of this driving wheel.
The present invention also proposes a kind of CD clamping and drive unit, this device comprises motor, three or three above clamping wheels, described each clamping wheel is along CD outer ring circle distribution, also comprise a driving wheel and a compressing member, described motor and the coaxial installation of this driving wheel, described driving wheel places CD rotation center one side, and compressing member and driving wheel are opposite to the opposite side of CD rotation center mutually.
The CD clamping and the drive unit of the present invention design can reduce to keep in the optical disk the non-write area area of clamping device effectively, for further improve capacity of optical storage provide new may.
Description of drawings
Fig. 1 is the CD clamping of prior art and the structural representation of drive unit.
Fig. 2 is the CD clamping that designs of the present invention and the structural representation of drive unit.
Fig. 3 is the structural representation of one embodiment of the present of invention.
Fig. 4 is the structural representation of an alternative embodiment of the invention.
Fig. 5 is the structural representation of an alternative embodiment of the invention.
Among Fig. 1～Fig. 5, the 1st, CD, the 2nd, motor, the 3rd, clamping wheel, the 4th, driving wheel, the 5th, compressing member.
Embodiment
CD clamping and drive unit that the present invention proposes, its structure comprise motor 2, two above clamping wheels 3 as shown in Figure 2, and clamping is taken turns along CD 1 outer ring circle distribution.One of them of taking turns along the clamping of CD outer ring circle distribution is driving wheel 4, and motor 2 is coaxial with driving wheel 4.
The CD clamping that Fig. 2 designs for the present invention and the structural representation of drive unit.The CD clamping of this embodiment and the structural group of drive unit become: motor 2 is designed in the side, edge of CD 1, is used to provide the power that drives CD 1 rotation.Driving wheel 4 and motor coaxle, the top that is installed in motor 4 also can be rotated with motor 4.Along clamping wheel 3 (one of them is a driving wheel 4) of CD 1 outer ring circle distribution, can realizes clamping, location and the driving function of CD, and reduce the contact area of clamping, location and drive unit and CD.
In the process of data read or record, the rotation of motor 2 drives driving wheel 4 co-rotation, because driving wheel 4 can contact well with CD 1, thereby can provide enough drive force CDs to rotate, can guarantee that CD 1 can not endwisely slip along its rotation axis simultaneously in rotation process according to the rotating speed of setting.
As shown in Figure 2, there are four to be in conplane rotor wheel at the plane of orientation of CD, i.e. a driving wheel 4 and three clampings wheels 3, these four rotor wheels are structurally identical.All driving wheels can be realized location and two kinds of functions of clamping of CD simultaneously in the edge that contacts with CD 1, and because the application of force radius of its holding force is bigger, therefore compare the minimum permissible value of the required holding force of minimizing that can be at double with the central clamping device of prior art.And the central area of disc need not be used as the location and clamping, can be utilized zone as data access.
This shows that in the device of Fig. 2, CD does not need center pit, perhaps only need very little center pit to carry out the disc location.Therefore the area of its core can farthest be utilized, and makes the more traditional CD of useful area of disc improve a lot, thereby has increased the data storage capacity of disc, therefore can improve the memory by using rate of the optical disk that is read.
Fig. 3 is the structural representation of one embodiment of the present of invention.The CD clamping of this embodiment and the structural group of drive unit become: along four clamping wheels 3 of CD 1 outer ring circle distribution, with motor 2 coaxial mounted driving wheels 4, motor 2 and driving wheel 4 are installed in outside the CD 1 outer ring circumference.Wherein, motor 2 provides and drives the power that CD 1 rotates.Driving wheel 4 and motor coaxle, the top that is installed in motor 4 also can be rotated with motor 4.Along the clamping wheel 3 of CD 1 outer ring circle distribution, can realize clamping, location and the driving function of CD, and reduce the contact area of clamping, location and drive unit and CD.
In the process of data read or record, the rotation of motor 2 drives driving wheel 4 co-rotation, well contacts because driving wheel 4 takes turns 3 with a clamping, thereby can provide enough clampings of drive force to take turns 3 according to the rotating speed rotation of setting.Driven clamping wheel 3 also has good the contact with CD 1, therefore can drive CD 1 according to the rotating speed rotation of setting, and assurance CD 1 can not endwisely slip in rotation process along its rotation axis.
As shown in Figure 3, there are five to be in conplane rotor wheel, i.e. driving wheel 4 and along four clampings wheels 3 of CD outer ring circle distribution at the plane of orientation of CD.Four clamping wheels 3 are structurally identical, can realize location and two kinds of functions of clamping of CD simultaneously in the edge that contacts with CD 1, and because the application of force radius of its holding force is bigger, therefore compare the minimum permissible value of the required holding force of minimizing that can be at double with the central clamping device of prior art.And the central area of disc need not be used as the location and clamping, can be utilized zone as data access.
Fig. 4 is the structural representation of an alternative embodiment of the invention.The CD clamping of this embodiment and the structural group of drive unit become: along four clamping wheels 3 of CD 1 outer ring circle distribution, with motor 2 coaxial mounted driving wheels 4, motor 2 and driving wheel 4 are installed in CD 1 rotation center.Wherein, motor 2 provides and drives the power that CD 1 rotates.Driving wheel 4 and motor coaxle, the top that is installed in motor 4 also can be rotated with motor 4.Under the effect of external force (as magnetic force, cohesive force etc.), combine closely between driving wheel 4 and the CD 1, under the driving of motor 2, drive the CD rotation.Along the clamping wheel 3 of CD 1 outer ring circle distribution, can realize clamping, location and the driving function of CD, and reduce the contact area of clamping, location and drive unit and CD.
Fig. 5 is the structural representation of an alternative embodiment of the invention.The CD clamping of this embodiment and the structural group of drive unit become: along four clamping wheels 3 of CD 1 outer ring circle distribution, with motor 2 coaxial mounted driving wheels 4, motor 2 and driving wheel 4 are installed in CD 1 rotation center, are installed in the compressing member 5 of CD 1 rotation center.Wherein, motor 2 provides and drives the power that CD 1 rotates.Driving wheel 4 and motor coaxle, the top that is installed in motor 4 also can be rotated with motor 4.Acting force between compressing member 5 and the driving wheel 4 makes driving wheel 4 and CD combine closely.Driving wheel 4 drives the CD rotation under the driving of motor 2.Along the clamping wheel 3 of CD 1 outer ring circle distribution, can realize clamping, location and the driving function of CD, and reduce the contact area of clamping, location and drive unit and CD.
This shows that the present invention goes for reading of various CDs and record, as normal optical disk, non-hole optical disc, aperture CD or the like.
Embodiments of the invention can thoroughly save the requirement to the CD pilot hole, and the surface of whole like this high-density disk can be designed to the most effective storage data field, thereby have realized maximally utilising the memory block of optical disc surface.
Claims (3)
1, a kind of CD clamping and drive unit, it is characterized in that this device comprises motor, four or more clamping wheel, described each clamping wheel is along CD outer ring circle distribution, a coaxial installation during described motor is taken turns with described clamping is used to drive CD.
2, a kind of CD clamping and drive unit, it is characterized in that, this device comprises motor, three or three above clamping wheels, described each clamping wheel is along CD outer ring circle distribution, also comprise a driving wheel, this driving wheel and described clamping wheel link mutually, and are in the outside of CD, described motor and the coaxial installation of this driving wheel.
3, a kind of CD clamping and drive unit, it is characterized in that, this device comprises motor, three or three above clamping wheels, described each clamping wheel is along CD outer ring circle distribution, also comprise a driving wheel and a compressing member, described motor places CD rotation center one side with the coaxial installation of this driving wheel, described driving wheel, and described compressing member and driving wheel are opposite to the opposite side of CD rotation center mutually.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03137740 CN1212615C (en) | 2003-06-23 | 2003-06-23 | Disc holding and driving devices |
| PCT/CN2004/000677 WO2004114296A1 (en) | 2003-06-23 | 2004-06-23 | An optical disc clamping and driving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03137740 CN1212615C (en) | 2003-06-23 | 2003-06-23 | Disc holding and driving devices |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1472738A CN1472738A (en) | 2004-02-04 |
| CN1212615C true CN1212615C (en) | 2005-07-27 |
Family
ID=30122927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03137740 Expired - Fee Related CN1212615C (en) | 2003-06-23 | 2003-06-23 | Disc holding and driving devices |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN1212615C (en) |
| WO (1) | WO2004114296A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI625814B (en) * | 2012-07-27 | 2018-06-01 | 荏原製作所股份有限公司 | Workpiece transport device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06131783A (en) * | 1992-10-19 | 1994-05-13 | Asahi Corp:Kk | Disk holder |
| JPH1145487A (en) * | 1997-07-30 | 1999-02-16 | Matsushita Electric Ind Co Ltd | Optical disk device |
-
2003
- 2003-06-23 CN CN 03137740 patent/CN1212615C/en not_active Expired - Fee Related
-
2004
- 2004-06-23 WO PCT/CN2004/000677 patent/WO2004114296A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2004114296A1 (en) | 2004-12-29 |
| CN1472738A (en) | 2004-02-04 |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |