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WO2004114296A1 - Dispositif de calage et d'entrainement de disque optique - Google Patents

Dispositif de calage et d'entrainement de disque optique Download PDF

Info

Publication number
WO2004114296A1
WO2004114296A1 PCT/CN2004/000677 CN2004000677W WO2004114296A1 WO 2004114296 A1 WO2004114296 A1 WO 2004114296A1 CN 2004000677 W CN2004000677 W CN 2004000677W WO 2004114296 A1 WO2004114296 A1 WO 2004114296A1
Authority
WO
WIPO (PCT)
Prior art keywords
clamping
optical disc
motor
driving wheel
driving
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.)
Ceased
Application number
PCT/CN2004/000677
Other languages
English (en)
Chinese (zh)
Inventor
Mali Gong
Lei Huang
Longfa Pan
Yuan Yao
Min Lu
Shurong Ma
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CHENGDU TOSUN SCIENCE AND TECHNOLOGY DEVELOPMENT Ltd
Tsinghua University
Original Assignee
CHENGDU TOSUN SCIENCE AND TECHNOLOGY DEVELOPMENT Ltd
Tsinghua University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by CHENGDU TOSUN SCIENCE AND TECHNOLOGY DEVELOPMENT Ltd, Tsinghua University filed Critical CHENGDU TOSUN SCIENCE AND TECHNOLOGY DEVELOPMENT Ltd
Publication of WO2004114296A1 publication Critical patent/WO2004114296A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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

Definitions

  • the present invention relates to an optical disk clamping and driving device, and belongs to the technical field of optical disk systems.
  • Optical disk storage is one of the main means for high-density information storage.
  • Optical disc drives are the most common and commonly used optical disc storage and reading device.
  • the optical disc drive can be composed of an optical system, an electromechanical system, and a circuit system.
  • the digital information stored in the optical disc is decoded and reproduced by software and hardware, and output through an output terminal, and the digital information is recorded by software and hardware processing. CD.
  • the clamping and driving device includes: a main shaft motor 4; a driving wheel 3, which can be rotatably disposed on the upper end of the motor 4 and is in close contact with the non-writing surface inside the lower surface of the optical disc 1; The non-writing surface which is in close contact with the inner side of the upper surface of the optical disc 1 and a magnetic body inside the clamping member 2 can form a magnetic attraction force with the driving wheel 3 so as to clamp the optical disc 1 on the driving wheel 3;
  • the driving wheel 3 is driven by the motor 4 and the clamping force exerted by the driving wheel 3 and the clamping member 2 on the inside of both surfaces of the optical disc 1 drives the optical disc to rotate at a certain speed.
  • the clamping member 2, the driving wheel 3, and the motor 4 jointly realize the positioning, clamping and driving functions of the optical disc.
  • the clamping force is the rotational force of the optical disk driven by the motor, in order to ensure that the rotational speed of the optical disk can be controlled stably and reliably
  • the optical disc must be provided with a clamping force greater than the minimum allowable value; at the same time, in order to prevent the local disc from being excessively deformed during the clamping process, the clamping force needs to be evenly distributed on the clamping surface, so that existing The contact area between the technical clamping device and the surface of the optical disc cannot be too small, that is, the non-writing surface inside the upper and lower surfaces of the disc cannot be too small.
  • a considerable area of the disc surface must be reserved as a non-writing surface for use by the clamping device, which reduces the effective area of the disc surface information recording.
  • the object of the present invention is to provide an optical disk holding and driving device, which improves the structure of the existing optical disk holding and driving device so that the holding and driving mechanism interacts with the outer edge of the optical disk or on the disk. There is only a small area of contact between the center of the disc, thereby reducing the size of the contact area between the disc and the clamping device for clamping and positioning the disc, and improving the storage utilization rate of the disc.
  • the optical disc clamping and driving device provided by the present invention includes a motor and two or more clamping wheels.
  • the motor is coaxially mounted with one of the clamping wheels, and the clamping wheels are distributed along the outer circumference of the optical disc.
  • the above-mentioned optical disc clamping and driving device may further include a driving wheel, the driving wheel and the clamping wheel interact with each other, and the motor and the driving wheel are mounted coaxially.
  • the above-mentioned optical disc clamping and driving device may further include a pressing member, the driving wheel is located at the disc rotation center, and the pressing member is opposite to the driving wheel.
  • the optical disk clamping and driving device designed by the present invention can effectively reduce the area of the non-write area reserved for the clamping device in the optical disk, and provides a new possibility for further increasing the storage capacity of the optical disk.
  • FIG. 1 is a schematic structural diagram of a conventional optical disk clamping and driving device.
  • FIG. 2 is a schematic structural diagram of an optical disc clamping and driving device designed by the present invention.
  • FIG. 3 is a schematic structural diagram of an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of another embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of another embodiment of the present invention.
  • 1 is an optical disc
  • 2 is a motor
  • 3 is a clamping wheel
  • 4 is a driving wheel
  • 5 is a pressing member.
  • FIG. 2 The structure of the optical disc clamping and driving device proposed by the present invention is shown in FIG. 2 and includes a motor 2 and two or more clamping wheels 3.
  • the clamping wheels are distributed along the outer circumference of the optical disc 1.
  • One of the clamping wheels distributed along the outer circumference of the disc is a driving wheel 4, and the motor 2 is coaxial with the driving wheel 4.
  • FIG. 2 is a schematic structural diagram of an optical disc clamping and driving device designed by the present invention.
  • the structure of the optical disc clamping and driving device of this embodiment is as follows:
  • the motor 2 is designed on the side of the edge of the optical disc 1 to provide power for driving the optical disc 1 to rotate.
  • the driving wheel 4 is coaxial with the motor 4 and is mounted on the top of the motor 4 and can rotate with the motor 4.
  • the clamping wheels 3 (one of which is the driving wheel 4) distributed along the outer circumference of the optical disc 1 can realize the functions of clamping, positioning and driving the optical disc, and reduce the contact area between the clamping, positioning and driving device and the optical disc.
  • the rotation of the motor 2 drives the driving wheel 4 to rotate together. Since the driving wheel 4 can be in good contact with the optical disc 1, it can provide sufficient driving force to drive the optical disc to rotate at a set speed. At the same time, it can be ensured that the optical disc 1 does not slide axially along its rotation axis during the rotation.
  • the moving wheel can simultaneously achieve the two functions of positioning and clamping the optical disc at the edge in contact with the optical disc 1, and because its clamping force has a larger application radius, compared with the prior art central clamping mechanism, it can achieve The minimum allowable value of the required clamping force is reduced by a factor of two.
  • the central area of the disc need not be used for positioning and clamping, but can be used as an area for data access.
  • the optical disc does not need to have a central hole, or only a small central hole is needed for disc positioning. Therefore, the area of the central portion can be utilized to the greatest extent, which makes the effective area of the disc larger than that of the conventional optical disc, thereby increasing the data storage capacity of the disc, and thus improving the storage of the read optical disc. Utilization.
  • FIG. 3 is a schematic structural diagram of an embodiment of the present invention.
  • the structure of the optical disc clamping and driving device of this embodiment is as follows: four clamping wheels 3 distributed along the circumference of the outer circle of the optical disc 1, a driving wheel 4 coaxially mounted with the motor 2, and the motor 2 and the driving wheel 4 are mounted on The outer periphery of the outer circle of the optical disc 1.
  • the motor 2 provides power for driving the optical disc 1 to rotate.
  • the driving wheel 4 is coaxial with the motor 4 and is mounted on the top of the motor 4 and can rotate with the motor 4.
  • the clamping wheels 3 distributed along the circumference of the outer circle of the optical disc 1 can realize the functions of clamping, positioning and driving the optical disc, and reduce the contact area between the clamping, positioning and driving device and the optical disc.
  • the rotation of the motor 2 drives the driving wheel 4 to rotate together. Because the driving wheel 4 is in good contact with a clamping wheel 3, it can provide sufficient driving force to drive a clamping wheel 3 according to Set the rotation speed.
  • the driven clamping wheel 3 also has a good contact with the optical disc 1, so that the optical disc 1 can be driven to rotate at a set speed, and the optical disc 1 cannot be axially slid along its rotation axis during the rotation. .
  • the clamping force has a larger application radius. The minimum allowable value of the required clamping force can be reduced by a factor of two. Moreover, the central area of the disc need not be used for positioning and clamping, but can be used as an area for data access.
  • FIG. 4 is a schematic structural diagram of another embodiment of the present invention.
  • the structure of the disc clamping and driving device of this embodiment is as follows: four clamping wheels 3 distributed along the circumference of the outer circle of the optical disc 1, a driving wheel 4 coaxially mounted with the motor 2, and the motor 2 and the driving wheel 4 are mounted on Disc 1 rotation center.
  • the motor 2 provides power for driving the optical disc 1 to rotate.
  • the driving wheel 4 is coaxial with the motor 4 and is mounted on the top of the motor 4 and can rotate with the motor 4.
  • the driving wheel 4 and the optical disc 1 are tightly combined by an external force (such as magnetic force, adhesive force, etc.), and driven by the motor 2 to rotate the optical disc.
  • the clamping wheels 3 distributed along the circumference of the outer circle of the optical disc 1 can realize the function of clamping, positioning and driving the optical disc, and reduce the contact area of the clamping, positioning and driving device with the optical disc.
  • FIG. 5 is a schematic structural diagram of another embodiment of the present invention.
  • the structure of the disc clamping and driving device of this embodiment is as follows: four clamping wheels 3 distributed along the circumference of the outer circle of the optical disc 1, one driving wheel 4 coaxially mounted with the motor 2, and the motor 2 and the driving wheel 4 being mounted on
  • the rotation center of the optical disc 1 is a pressing member 5 mounted on the rotation center of the optical disc 1.
  • the motor 2 provides power for driving the optical disc 1 to rotate.
  • the driving wheel 4 is coaxial with the motor, and is installed on the top of the motor 4 and can rotate with the motor 4.
  • the force between the pressing member 5 and the driving wheel 4 causes the driving wheel 4 to be tightly combined with the optical disc.
  • the drive wheel 4 is driven by the motor 2 to drive the disc to rotate.
  • the clamping wheels 3 distributed along the circumference of the outer circle of the optical disc 1 can realize the function of clamping, positioning and driving the optical disc, and reduce the contact area between the clamping, positioning and driving device and the optical disc.
  • the present invention can be applied to reading and recording of various optical discs, such as ordinary optical discs, Non-perforated discs, pinhole discs, etc.
  • the embodiment of the present invention can completely eliminate the requirement for the positioning holes of the optical disc, so that the entire surface of the high-density disc can be designed as the most effective data storage area, thereby realizing the maximum use of the storage area on the surface of the optical disc.

Landscapes

  • Holding Or Fastening Of Disk On Rotational Shaft (AREA)

Abstract

L'invention concerne un dispositif de calage et d'entraînement de disque optique mis en oeuvre dans le domaine technologique du stockage d'informations. Ce dispositif comprend un moteur et plus de deux roues de calage, ces roues de calage étant distribuées le long de la circonférence du disque optique. Par ailleurs, ce dispositif peut être mis en rotation par l'une des roues de calage, lesquelles sont entraînées par une roue d'entraînement montée coaxialement par rapport au moteur, lesdites roues de calage ne revêtant qu'une fonction de calage. Le dispositif de calage et d'entraînement de disque optique de l'invention permet de réduire efficacement la zone de non-écriture occupée par le dispositif de calage dans le disque optique, et d'augmenter la capacité de stockage du disque optique.
PCT/CN2004/000677 2003-06-23 2004-06-23 Dispositif de calage et d'entrainement de disque optique Ceased WO2004114296A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN 03137740 CN1212615C (zh) 2003-06-23 2003-06-23 一种光盘夹持与驱动装置
CN03137740.8 2003-06-23

Publications (1)

Publication Number Publication Date
WO2004114296A1 true WO2004114296A1 (fr) 2004-12-29

Family

ID=30122927

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2004/000677 Ceased WO2004114296A1 (fr) 2003-06-23 2004-06-23 Dispositif de calage et d'entrainement de disque optique

Country Status (2)

Country Link
CN (1) CN1212615C (fr)
WO (1) WO2004114296A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI625814B (zh) * 2012-07-27 2018-06-01 荏原製作所股份有限公司 工件搬送裝置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1145487A (ja) * 1997-07-30 1999-02-16 Matsushita Electric Ind Co Ltd 光ディスク装置
CN1045132C (zh) * 1992-10-19 1999-09-15 株式会社朝日公司 盘夹持装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1045132C (zh) * 1992-10-19 1999-09-15 株式会社朝日公司 盘夹持装置
JPH1145487A (ja) * 1997-07-30 1999-02-16 Matsushita Electric Ind Co Ltd 光ディスク装置

Also Published As

Publication number Publication date
CN1212615C (zh) 2005-07-27
CN1472738A (zh) 2004-02-04

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