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EP0950242A1 - Changeur de disques compacts - Google Patents

Changeur de disques compacts

Info

Publication number
EP0950242A1
EP0950242A1 EP98951796A EP98951796A EP0950242A1 EP 0950242 A1 EP0950242 A1 EP 0950242A1 EP 98951796 A EP98951796 A EP 98951796A EP 98951796 A EP98951796 A EP 98951796A EP 0950242 A1 EP0950242 A1 EP 0950242A1
Authority
EP
European Patent Office
Prior art keywords
roulette
tray
rotational
circular plate
rotational shaft
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.)
Withdrawn
Application number
EP98951796A
Other languages
German (de)
English (en)
Inventor
Hag-Ryeol Kim
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.)
WiniaDaewoo Co Ltd
Original Assignee
Daewoo Electronics Co Ltd
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
Priority claimed from KR1019970056758A external-priority patent/KR19990035038A/ko
Priority claimed from KR1019980024777A external-priority patent/KR20000003527A/ko
Application filed by Daewoo Electronics Co Ltd filed Critical Daewoo Electronics Co Ltd
Publication of EP0950242A1 publication Critical patent/EP0950242A1/fr
Withdrawn legal-status Critical Current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
    • G11B17/22—Guiding record carriers not specifically of filamentary or web form, or of supports therefor from random access magazine of disc records
    • G11B17/26—Guiding record carriers not specifically of filamentary or web form, or of supports therefor from random access magazine of disc records the magazine having a cylindrical shape with vertical axis

Definitions

  • This invention relates to a compact disk changer, more particularly a compact disk changer for moving a center of a rotational circular plate table or roulette toward a relatively wide-spaced side area to reduce an overall rotational diameter, when a portion of a compact disk resting portion that is formed on an edge of the roulette on which a plurality of compact disks are placed is positioned on an edge of compact disk changer body.
  • a compact disk (hereafter referred to as a "CD") changer is a device that contains a plurality of CDs.
  • a rotational circular plate table or roulette for placing a plurality of CDs is installed at the CD changer, and an optic pick-up device reproduces data stored on the CD placed at the roulette.
  • the roulette is of rotary-type, and the CD placed on the CD resting portion moves to the optic pick-up device by rotation of the roulette.
  • a conventional CD changer having the above rotary-type roulette as shown in FIGs . 1 and 2, comprises a body frame 110, a plate-shaped tray 120 moving slidably in/out of the body frame 110, a rotational circular plate table or roulette 130 installed rotatably on the tray 120 and on which a plurality of CDs are placed, a rotating member (which is illustrated later) installed on the tray 120 for rotating the roulette 130, and a drive unit 140 mounted with an optic pick-up device (not shown) for reproducing data stored on the CD placed on the roulette 130.
  • Three CD resting portions 138 are formed on the roulette 130 installed on the tray 120, and are extended radially from a rotational shaft 130C of the roulette 130. The roulette 130 rotates around the rotational shaft 130C of the roulette 130, so that the CD resting portion 138 of the roulette 130 on which the CD is placed is positioned above the drive unit 140.
  • the rotating member comprises a driving motor 132 mounted on the tray 120, a connecting gear 134 rotated by the driving motor 132, and a circular gear 136 installed fixedly below the rotational shaft 130C of the roulette 130 to mesh with the connecting gear 134 to rotate, thereby rotating the roulette 130.
  • the roulette 130 is rotated by driving of the driving motor 132 so that the CD resting portion 138 on which the CD is placed is positioned above the drive unit 140.
  • the drive unit 140 is raised by driving of the motor (not shown) to chuck the CD against a bracket 140B, and thereafter reproducing data stored on the CD.
  • the roulette 130 rotates in an inner space of a body frame 110 to move the CD to the drive unit 140.
  • the inner space of the body frame 110 has a size for containing geometric circle in which an edge of the CD which is placed on the CD resting portion 138 rotates within the inner space of the body frame 110. Therefore, the body frame 110 has a predetermined size which limits the production of smaller size CD changers.
  • the present invention has been proposed to overcome the above described problems in the prior art, and accordingly it is an object of the present invention to provide a CD changer for moving a center of a roulette toward a relatively wide-spaced side area to reduce an overall rotational diameter, when a CD resting portion, formed on an edge of the roulette on which a plurality of CDs are placed, is positioned on an edge of the CD changer body.
  • the present invention provides a compact disk changer which is comprised of a body, a tray having a rotational shaft for horizontally extracting from or retracting into the body, a rotational circular plate table or roulette, on which an odd number of more than three compact disks are horizontally placed in a same plane, and arranged rotatably on the tray, and a mechanism for revolving the plate table around the rotational shaft of the tray during rotation of the plate table around a rotational center of the plate table.
  • the mechanism comprises a plurality of protrusion members formed radially from the rotational shaft of the tray, a restriction member for restricting movement of the roulette during rotation of the rotational shaft, and a revolutional/rotational member for revolving the roulette around the rotational shaft of the tray as well as rotating the roulette around the rotational shaft of the roulette by movement of the protrusion member.
  • the protrusion member is a vortex of a first equilateral triangle
  • the restriction member is comprised of a groove formed on the tray, and pins numbering more than two which are extended downwardly from the lower surface of the roulette and are distanced equally, for sliding movement along the groove
  • the revolutional/rotational member is a number of sides of a second equilateral triangular cutout hole which is point- contacted with the vortex of the first equilateral triangle, in which each side of the second equilateral triangular cutout hole is longer than that of the first equilateral triangle.
  • a diameter of a circular plate formed on the first equilateral triangle is longer than that of an inscribed circle of the second equilateral triangular cutout hole.
  • the first equilateral triangle is comprised of a pair of equilateral triangles which are rotated independently, and a helical torsion spring for forcing the vortex of each of the equilateral triangles in counter directions.
  • the compact disk changer is comprised of a body, a tray having a rotational shaft for horizontally extracting from or retracting into the body, and a rotational circular plate table or roulette, on which an odd number of more than three compact disks are horizontally placed in a same plane, and arranged rotatably on the tray around the rotational shaft of the tray, wherein a revolutional shaft of the roulette is offset against a rotational shaft of the roulette.
  • FIG. 1 is a perspective view of a conventional CD changer
  • FIG. 2 is a plane view of FIG. 1 excepi for an upper bracket
  • FIG. 3 is an exposed perspective view of a roulette rotational structure of a first embodiment of the CD changer in accordance with the present invention
  • FIG. 4 is a side cross sectional view of an assembled roulette rotational structure of a first embodiment of the CD changer in accordance with the present invention
  • FIG. 5 is a plane view of the CD changer showing a state when the roulette is positioned at position A
  • FIG. 6 is a plane view of the roulette rotational structure showing a state of FIG. 5,
  • FIG. 7 is a plane view of the CD changer showing a state when the roulette is positioned at position B,
  • FIG. 8 is a plane view of the roulette rotational structure showing a state of FIG. 7
  • FIG. 9 is an exposed perspective view of a roulette rotational structure of a second embodiment of the CD changer in accordance with the present invention
  • FIG. 10 is a side cross sectional view of an assembled roulette rotational structure of a second embodiment of the CD changer in accordance with the present invention.
  • FIG. 11 is a plane view of the CD changer showing a state when the roulette is positioned at position A of FIG.
  • FIG. 12 is a plane view of the CD changer showing a state when the roulette is positioned at position B of FIG. 7.
  • a CD changer in accordance with the present invention comprises a roulette 70 having a plurality of CD resting portions 72 on which each CD is placed, a plate-shaped tray 10 which is extracted from or retracted horizontally into a body of the CD changer and on which the roulette 70 is rotationally placed, and a drive unit 80 mounted with an optic pick-up device for reproducing data stored on the CD placed on the roulette 70.
  • the CD changer is comprised of a driving motor 20 mounted on the tray 10, a central circular plate 30 rotated by the driving motor 20, a first equilateral triangle 32 formed under the central circular plate 30, and an offset circular plate 40 emcompassing the central circular plate 30 and formed under the roulette 70.
  • a section in the form of a second equilateral triangle is cut-out from the offset circular plate 40, in which each vortex of the first equilateral triangle 32 is contacted on sides of the second equilateral triangular cut-out hole 42 in the circular plate 40, pins 76 numbering three which are extended downwardly from the lower surface of the roulette 70 and are distanced equally in an equilateral triangle shape, and a groove curve 12 is formed on the tray 10 for sliding movement of pins 76.
  • a motor pulley 22 is provided under the driving motor 20, and a revolution pulley 34 is provided under the central circular plate 30. Both pulleys 22,34 are coupled by a belt 24. The size of both pulleys 22,34 is determined dependant to the low speed of the central plate 30 with respect to the high speed of the motor 20.
  • the second equilateral triangular cut-out hole 42 in the circular plate 40 is larger than the first equilateral triangle 32, that is, each side of the second equilateral triangular cut-out hole 42 in the circular plate 40 is longer than that of the first equilateral triangle 32.
  • a gap is generated between each vortex of the first equilateral triangle 32 and each side of the second equilateral triangular cut-out hole 42 in the circular plate 40.
  • a diameter (not shown) of a circular plate 30 formed on the first equilateral triangle 32 is longer than that of an inscribed circle (not shown) of the second equilateral triangular cut-out hole 42 in the circular plate 40, thus preventing the circular plate 30 from slipping through the second equilateral triangular cut-out hole 42 in the circular plate 40.
  • the groove curve 12 is formed approximately as a square of which each side of the square is bowed inwardly.
  • the roulette 70 rotates around the center rotational shaft of the offset circular plate 40 attached on the lower surface of the roulette 70, and pins 76 extended downwardly from the portion distanced from circumference of the offset circular plate 40 are inserted by freely sliding into the groove curve 12, thus enabling the roulette 70 to revolve around a revolutional shaft 34C.
  • the tray 10 slides into the body frame and is ready to reproduce data stored on the CD.
  • the CD resting portion 72 on which CD is placed is positioned above the drive unit 80, and the drive unit 80 is raised so that the optic pick-up device mounted on the drive unit 80 reproduces data stored on the CD.
  • the drive unit 80 After the optic pick-up device reproduced the data stored on the CD, the drive unit 80 is lowered. And, as shown in FIGs. 5 and 7, the roulette 70 rotates from point A to point B to transfer an other CD to the reproducing position .
  • Mechanism for rotating the roulette 70 is as follows. When the driving motor 20 rotates, the driving force is transmitted to the central circular plate 30 formed integrally to the revolutional pulley 34 by the belt 24. As shown in FIGs. 3-6, the central circular plate 30 rotates in the offset circular plate 40.
  • the CD resting portion 72 on which the selected CD is placed is moved to the area above the drive unit 80.
  • the drive unit 80 rises to chuck the selected CD and to reproduce the data srored on the CD.
  • the roulette 70 rotates around the rotational shaft 40S of the offset circular plate 40 and revolves around the revolutional shaft 34C along the groove curve 12.
  • the rotational center of the roulette 70 i.e., the rotational shaft 40S of the offset circular plate 40, moves toward the opposite portion against the revolutional shaft 34C.
  • the CD resting portion 72 of the roulette 70 positioned at the closest position from the center of a roulette 70, moves to the inner wall of the edge of the body frame, and the center of the roulette 70 moves to a relatively wide-spaced side against the inner wall of the edge of the body frame, so that an overall rotational diameter is reduced. Accordingly, the roulette 70 rotates freely without contacting the inner wall of the body frame in the relatively small space which the roulette 70 forms. Therefore, the CD changer can be produced in a smaller size than the conventional sizes.
  • the CD changer according to the invention is similar to that of the first embodiment shown in Figures 3-8, except for the structure of the moving elements which are a gist of the invention. Thus an explanation with the numbers being referenced to the same elements will be made. No detailed description will be made of the components which are common to the first embodiment.
  • the CD changer is further comprised of a driving motor 20 mounted on the tray 10, a central circular plate 30 rotated by the driving motor 20, a first upper equilateral triangle 32U and a first lower triangle 32L which are assembled with the rotational shaft 34R at the lower area of the central circular plate 30 and are elastically pushed in counter directions by a helical torsion spring 44, and an offset circular plate 40 emcompassing the central circular plate 30 and formed under the roulette 70.
  • a section in the form of a second equilateral triangle is cut out from the offset circular plate 40, in which each vortex of both equilateral triangles 32U,32L is contacted on sides of the second equilateral triangular cut-out hole 42 in the circular plate 40, pins 76 numbering three are extended downwardly from the lower surface of the roulette 70 and are distanced equally in an equilateral triangular shape, and a groove curve 12 is formed on the tray 10 for sliding movement of pins 76.
  • the body of the helical torsion spring 44 is assembled at the revolutional shaft 34C of the revolutional pulley 34, and each end of the helical torsion spring 44 is coupled with each protrusion 41,47 which is respectively extended from first upper and lower equilateral triangles 32U,32L.
  • a pin 36 is provided on the upper surface of the revolutional pulley 34. Slots 42,48 are formed at each upper and lower equilateral triangles 32U,32L, through which pin 36 is inserted. Thus, each of the first upper and lower equilateral triangles 32U,32L is pushed in counter directions by the helical torsion spring 44.
  • Each vortex of the first upper and lower equilateral triangles 32U,32L is contacted to the side of the second equilateral triangular cutout hole 42 formed in the offset circular plate 40.
  • the movement range of the first upper and lower equilateral triangles 32U,32L is restricted by the pin 36 inserted into the slots 42,48.
  • the second equilateral triangular cut-out hole 42 in the circular plate 40 is larger than the first upper and lower equilateral triangles 32U,32L, that is, each side of the second equilateral triangular cut-out hole 42 in the circular plate 40 is longer than that of the first upper and lower equilateral triangles 32U,32L.
  • a diameter (not shown) of a circular plate 30 formed above the first upper and lower equilateral triangles 32U,32L is longer than that of an inscribed circle (not shown) of the second equilateral triangular cut-out hole 42 in the circular plate 40, thus preventing the circular plate 30 from slipping through the second equilateral triangular cut-out hole 42 in the circular plate 40.
  • the groove curve 12 is formed approximately as a square of which each side of the square is bowed inwardly.
  • the roulette 70 rotates around the center shaft of the offset circular plate 40 attached on the lower surface of the roulette 70, and pins 76 extended downwardly from the portion distanced from a circumference of the offset circular plate 40 are inserted by freely sliding into the groove curve 12, thus enabling the roulette 70 to revolve around a rotational shaft 34C.
  • the tray 10 slides into the body frame and is ready to reproduce data stored on the CD.
  • the CD resting portion 72 on which CD is placed is positioned above the drive unit 80, and the drive unit 80 is raised so that the optic pick-up device mounted on the drive unit 80 reproduces data stored on the CD.
  • the drive unit 80 is lowered. And, as shown in FIGs. 5 and 9-11, the roulette 70 rotates from point A to point B to transfer an other CD to the reproducing position.
  • Mechanism for rotating the roulette 70 is as follows.
  • the driving motor 20 rotates, the driving force is transmitted to the central circular plate 30 formed integrally to the revolutional pulley 34 by the belt 24.
  • the central circular plate 30 rotates in the offset circular plate 40.
  • One of any vortexes of the first upper and lower equilateral triangles 32U,32L formed under the central plate 30 contacts with any one side of the second equilateral triangular cut-out hole 42 in the circular plate 40 in counter direction.
  • the second equilateral triangular cutout hole 42 in the circular plate 40 is rotated by a push of one vortex of the first equilateral triangle, which is rotated in the same direction as the rotational direction of the revolutional shaft 34C, among the first upper and lower equilateral triangles 32U,32L.
  • the CD resting portion on which the selected CD is placed is moved to the area above the drive unit 80.
  • the drive unit 80 is raised to chuck the selected CD and reproduce the data srored on the CD.

Landscapes

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

Abstract

L'invention concerne un changeur de disques compacts, qui comprend un corps, un plateau pourvu d'un arbre pivotant destiné à s'extraire horizontalement depuis ledit corps ou à se rétracter vers l'intérieur de ce dernier, et une table à plaque ou une roulette pivotante circulaire, sur laquelle un nombre impair de disques compacts, supérieur à trois, est disposé horizontalement sur le même plan. Ces disques compacts sont en outre placés de manière à pivoter sur ledit plateau autour de l'arbre pivotant de ce dernier, l'arbre tournant de la roulette étant décalé par rapport à l'arbre pivotant de cette roulette.
EP98951796A 1997-10-31 1998-10-30 Changeur de disques compacts Withdrawn EP0950242A1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
KR1019970056758A KR19990035038A (ko) 1997-10-31 1997-10-31 씨디체인저의 룰렛 회전구조
KR5675897 1997-10-31
KR1019980024777A KR20000003527A (ko) 1998-06-29 1998-06-29 디스크체인저의 룰렛 편심회전구조
KR2477797 1998-06-29
PCT/KR1998/000344 WO1999023653A1 (fr) 1997-10-31 1998-10-30 Changeur de disques compacts

Publications (1)

Publication Number Publication Date
EP0950242A1 true EP0950242A1 (fr) 1999-10-20

Family

ID=26633155

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98951796A Withdrawn EP0950242A1 (fr) 1997-10-31 1998-10-30 Changeur de disques compacts

Country Status (4)

Country Link
EP (1) EP0950242A1 (fr)
JP (1) JP2001511933A (fr)
CN (1) CN1242862A (fr)
WO (1) WO1999023653A1 (fr)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3019928C2 (de) * 1980-05-24 1984-08-30 Philips Patentverwaltung Gmbh, 2000 Hamburg Abspielgerät für mit Informationen versehene Platten
JPH0675329B2 (ja) * 1986-02-18 1994-09-21 ソニー株式会社 ディスクプレーヤ
KR0126796B1 (ko) * 1994-02-16 1998-04-01 김광호 룰렛식 디스크 체인저

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9923653A1 *

Also Published As

Publication number Publication date
WO1999023653A1 (fr) 1999-05-14
JP2001511933A (ja) 2001-08-14
CN1242862A (zh) 2000-01-26

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