KR200168967Y1 - Disc Clamping Device - Google Patents
Disc Clamping Device Download PDFInfo
- Publication number
- KR200168967Y1 KR200168967Y1 KR2019940006383U KR19940006383U KR200168967Y1 KR 200168967 Y1 KR200168967 Y1 KR 200168967Y1 KR 2019940006383 U KR2019940006383 U KR 2019940006383U KR 19940006383 U KR19940006383 U KR 19940006383U KR 200168967 Y1 KR200168967 Y1 KR 200168967Y1
- Authority
- KR
- South Korea
- Prior art keywords
- disk
- clamping
- turntable
- clamping device
- clamping member
- 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 - Lifetime
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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
- G11B17/0284—Positioning or locking of single discs of discs rotating during transducing operation by clampers
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- 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
Landscapes
- Holding Or Fastening Of Disk On Rotational Shaft (AREA)
Abstract
본 고안은 디스크가 턴테이블에 클램핑된 상태에서 디스크가 반경방향으로 이동될 수 있는 디스크 클램핑장치에 대해 개시한다. 이를 위한 본 고안은 클램핑부재(60)가 축이동 가능하게 헐겁게 연결되며 회전가능하게 지지되는 지지부재(20)와, 클램핑부재와 지지부재의 어느 일측에 마련되는 자성체(50)와, 자성체가 마련된 타측에 고정설치되며 자성체를 사이에 두고 대향되어 마련되고 전원이 인가되어 자력을 발생하는 적어도 한쌍의 전자석 부재(40)들을 구비하여 구성된다.The present invention discloses a disk clamping device in which the disk can be moved radially while the disk is clamped to the turntable. The present invention for this purpose is that the clamping member 60 is loosely connected to the shaft movement and the support member 20 is rotatably supported, the magnetic body 50 is provided on any one side of the clamping member and the support member, and the magnetic body is provided It is fixed to the other side and provided with a magnetic material therebetween facing each other and is provided with at least a pair of electromagnet members 40 for generating a magnetic force is applied power.
Description
제1도는 종래 디스크 클램핑장치를 나타낸 개략 단면도.1 is a schematic cross-sectional view showing a conventional disk clamping device.
제2도는 클램핑 해제시 본 고안에 따른 디스크 클램핑장치를 나타낸 개략 단면도.Figure 2 is a schematic cross-sectional view showing a disk clamping device according to the present invention when the clamping release.
제3도는 디스크 클램핑시 본 고안에 따른 클램핑장치를 나타낸 개략 단면도.Figure 3 is a schematic cross-sectional view showing a clamping device according to the present invention at the time of disk clamping.
제4도는 제3도의 A-A 단면도.4 is a cross-sectional view taken along line A-A of FIG.
제5도는 본 고안에 따른 디스크 클램핑장치에 채용되는 전자석의 일부를 나타낸 개략적 사시도이다.5 is a schematic perspective view showing a part of an electromagnet employed in the disk clamping device according to the present invention.
제6도는 디스크의 이동을 나타낸 개략도.6 is a schematic diagram showing the movement of the disc.
제7도는 본 고안의 다른 실시예를 나타낸다.7 shows another embodiment of the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
20 : 지지부재 30 : 스핀들 모터20: support member 30: spindle motor
32 : 턴테이블 40 : 전자석부재32: turntable 40: electromagnet member
50 : 자성체 60 : 클램핑부재50: magnetic material 60: clamping member
본 고안은 정보기록 매체로서 디스크를 사용하는 디스크 플레이어의 디스크 클램핑장치에 관한 것으로서, 특히 디스크가 턴테이블에 안착된 상태에서 디스크를 반경방향으로 축 이동시킬 수 있도록 한 디스크 플레이어의 디스크 클램핑장치에 관한 것이다.The present invention relates to a disc clamping apparatus of a disc player using a disc as an information recording medium, and more particularly, to a disc clamping apparatus of a disc player which enables the disc to be axially moved in a radial direction when the disc is seated on a turntable. .
일반적으로 디스크 플레이어에는 제1도에 도시된 바와 같이 디스크(4)가 안착되는 턴테이블(7)과 이를 회전시키는 스핀들모터(5)가 마련되어 있다. 이 턴테이블(7)은 스핀들 모터(5)의 샤프트(6)에 압입 설치되어 있으며, 디스크(4)의 중심구멍이 결합되는 센터링콘(centering cone;9)이 샤프트(6)에 슬라이딩 가능하게 결합되어 스프링(8)으로 턴테이블(7)측으로 탄성바이어스되어 있다. 그리고 턴테이블(7)의 상부의지지부재(1)에는 턴테이블(7)에 안착된 디스크(4)를 클램핑시키는 클램핑부재(2)가 회전 가능하게 지지되어 있다. 그리고 클램핑부재(2)의 단부에는 턴테이블(7)과 자력(磁力)으로 부착되기 위한 영구자석(3)이 부착되어 있다.Generally, the disc player is provided with a turntable 7 on which the disc 4 is seated and a spindle motor 5 for rotating it, as shown in FIG. The turntable 7 is press-fitted to the shaft 6 of the spindle motor 5, and a centering cone 9 to which the center hole of the disk 4 is coupled is slidably coupled to the shaft 6. The spring 8 is elastically biased toward the turntable 7 side. In addition, a clamping member 2 for clamping the disk 4 seated on the turntable 7 is rotatably supported by the support member 1 on the upper part of the turntable 7. And the end of the clamping member (2) is attached to the turntable (7) and a permanent magnet (3) for magnetic attachment.
상기 클램핑부재(2)는 턴테이블(7)의 상부에 마련되어서, 디스크(4)가 턴테이블(7)에 안착된 후 지지부재(1)와 함께 클램핑부재(2)가 하강되어 디스크(4)의 중심구멍 주변을 가압하게 된다. 이때 클램핑부재(2)는 영구자석(3)의 자기력으로 디스크(4)를 턴테이블(7)에 클램핑시키는 것이다.The clamping member 2 is provided on the turntable 7 so that the disk 4 rests on the turntable 7, and then the clamping member 2 is lowered together with the support member 1 so that the disk 4 is closed. Pressurizes around the center hole. At this time, the clamping member 2 clamps the disk 4 to the turntable 7 by the magnetic force of the permanent magnet 3.
여기서 상기 디스크(4)는, 센터링콘(9)에 결합된 상태에서 그 센터링콘(9)이 스프링(8)에 의해서 상부측으로 스프링력이 작용하게 되므로 센터링콘(9)이 디스크(4) 중심구멍 주변을 밀착하게 되어 중심 이동을 할 수 없게 된다.Here, the disk 4 has a centering cone 9 in the state coupled to the centering cone 9 so that the spring force acts on the upper side by the spring 8 so that the centering cone 9 is centered on the disk 4. The close contact with the hole makes it impossible to move the center.
한편, 디스크(4)의 하부에는 그 디스크(4)의 반경방향으로 이동되면서 디스크(4)의 정보트랙에 순차적으로 광빔을 조사하는 광픽업(10)이 마련되어 있다.On the other hand, under the disk 4, an optical pickup 10 for sequentially irradiating a light beam to the information track of the disk 4 while moving in the radial direction of the disk 4 is provided.
그런데, 상기와 같은 종래의 디스크 클램핑장치는 다음과 같은 문제점이 있다.However, the conventional disk clamping device as described above has the following problems.
첫째, 디스크(4)의 중심구멍의 크기와 센터링콘(9)이 제작오차에 따라 디스크(4)의 안착위치가 변화하게 되면 트랙의 편심량이 변하게되어 정보트랙의 트래킹 서보제어가 불안정하게 되므로 정확한 신호를 읽어낼 수 없는 문제점이 있다.First, if the seating position of the disk 4 changes according to the size of the center hole of the disk 4 and the centering cone 9, the eccentricity of the track changes and the tracking servo control of the information track becomes unstable. There is a problem that the signal cannot be read.
둘째, 클램핑부재(2)가 하강되어 디스크(4)를 클램핑할시에 영구자석(3)의 강한 자기력으로 디스크(4)를 클램핑하게 되므로 디스크(4)의 중심구멍 주변을 손상시킬 위험이 있다.Secondly, when the clamping member 2 is lowered and the disk 4 is clamped, the disk 4 is clamped by the strong magnetic force of the permanent magnet 3, which may damage the periphery of the center hole of the disk 4. .
본 고안은 상기와 같은 문제점을 해결하기 위하여 안출된 것으로서, 디스크의 중심구멍의 크기와 센터링콘이 제작오차에 따라 디스크의 안착위치가 변화하게 되더라도 디스크를 반경방향으로 이동시켜 광빔의 초점이 트랙의 편심오차 범위내로 들어올 수 있도록 한 디스크 클램핑장치를 제공하는 데 그 목적이 있는 것이다.The present invention has been devised to solve the above problems, even if the size of the center hole of the disk and the centering cone change the seating position of the disk according to the manufacturing error, the disk is moved radially so that the focus of the light beam can be It is an object of the present invention to provide a disk clamping device which can be brought into an eccentric error range.
본 고안의 다른 목적은 디스크를 클램핑할시 디스크의 손상을 방지할 수 있는 디스크 클램핑장치를 제공하는 데 있다.Another object of the present invention is to provide a disk clamping device that can prevent damage to a disk when clamping the disk.
상기 목적을 달성하는 본 고안은 디스크가 안착되는 턴테이블과 이턴테이블에 안착된 디스크를 클램핑하는 클램핑부재를 구비하는 디스크 클램핑장치에 있어서, 디스크에 형성된 트랙의 중심과 디스크를 회전시키는 모터 축의 회전중심이 일치되도록 상기 턴테이블에 안착된 디스크를 반경방향으로 이동시키는 이동수단이 구비되어 되는 것을 특징으로 한다.The present invention to achieve the above object is a disk clamping device having a clamping member for clamping the disk seated on the turntable and the turntable is seated on the disk, the center of the track formed on the disk and the rotation center of the motor shaft for rotating the disk A moving means for radially moving the disk seated on the turntable to be matched is provided.
이하 첨부된 도면을 참조하면서 본 고안에 따른 바람직한 실시예를 상세히 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.
본 고안에 따른 디스크 클램핑장치를 나타낸 제2도 및 제3도를 참조하면, 스핀들 모터(30)의 샤프트(31)에는 디스크(80)가 안착되는 턴테이블(32)이 압입되어 설치되어 있다. 그리고 턴테이블(32)의 상부측에는 일측이 회동가능하게 힌지(미도시)결합되는 지지부재(20)가 마련되어 있다.2 and 3 showing the disk clamping apparatus according to the present invention, the turntable 32 on which the disk 80 is seated is pressed into the shaft 31 of the spindle motor 30. And the upper side of the turntable 32 is provided with a support member 20 to which one side is hinged (not shown) rotatably.
그리고 지지부재(20)의 저면에는 중공의 지지보스(21)가 형성되어있고, 그 지지보스(21)에는 디스크(80)를 클램핑하는 클램핑부재(60)가 회전가능하게 지지되어 있고, 그 클램핑부재(60)의 단부에는 자력을 발생하는 영구자석(90)이 부착되어 있다. 클램핑부재(60)는 지지부재(20)가 회동함에 따라 턴테이블(32)에 안착된 디스크(80)를 클램핑/클램핑해제시킨다. 여기서 클램핑부재(60)의 상면에는 상기 지지보스(21)에 회전가능하게 결합되기 위한 돌기(61)가 형성되어 있다. 이때 돌기(61)는 지지보스(21)에 지지된 채로 축 이동 가능하게 헐겁게 결합되어 있다.A hollow support boss 21 is formed on the bottom of the support member 20, and a clamping member 60 for clamping the disk 80 is rotatably supported on the support boss 21. At the end of the member 60, a permanent magnet 90 generating magnetic force is attached. The clamping member 60 clamps / unclamps the disk 80 seated on the turntable 32 as the support member 20 rotates. In this case, a protrusion 61 is rotatably coupled to the support boss 21 on the upper surface of the clamping member 60. At this time, the projection 61 is loosely coupled to the shaft movable while being supported by the support boss 21.
그리고 클램핑부재(60)의 저면에는 디스크(80)의 중심구멍에 결합되는 센터 링콘(33)이 스프링(34)으로 연결되어 있다. 이 센터링콘(33)은 디스크(80)의 중심구멍과 편차가 있더라도 결합될 수 있도록 경사면(33')을 가지며, 샤프트(31)에 슬라이딩 가능하게 결합될 수 있는 중공부를 가진다.The center ring cone 33 coupled to the center hole of the disk 80 is connected to the bottom of the clamping member 60 by a spring 34. The centering cone 33 has an inclined surface 33 'so that it can be coupled even if there is a deviation from the center hole of the disk 80, and has a hollow that can be slidably coupled to the shaft 31.
그리고 상기 턴테이블(32)에 안착된 디스크(80)를 클램핑부재(60)로 클램핑한 상태에서 디스크를 반경방향으로 이동시킬 수 있는 이동수단이 구비되어 있는 바, 이 이동수단은 상기 클램핑부재(60)의 상면에 환형의 자성체(50)를 부착하고, 상기 지지부재(20)에 고정 설치되며 상기 자성체(50)의 외주 측에 전원이 인가되어 자력을 발생하는 전자석부재(40)들을 구비하여 구성하였다. 여기서 상기 전자석부재(40)들은 제4도에 도시된 바와 같이 환형으로 자성체(50) 주위를 둘러싸도록 설치하였으며, 4개의 독립된 전자석(41-44)들로 구성하였다. 이들 각 전자석(41-44)들은 제5도(하나의 전자석만을 발췌하여 도시)에 도시된 바와 같이 4분원호형으로 된 자성부재(46)의 둘레에 전원이 인가되는 코일(45)을 감은 구조로 되어 있다.In addition, a moving means for radially moving the disk in a state where the disk 80 seated on the turntable 32 is clamped with the clamping member 60 is provided. The moving means includes the clamping member 60. Attached to the upper surface of the annular magnetic body 50, is fixed to the support member 20 and configured to have an electromagnet member 40 for generating a magnetic force by applying power to the outer peripheral side of the magnetic body 50 It was. Here, the electromagnet members 40 were installed to surround the magnetic body 50 in an annular shape as shown in FIG. 4, and consisted of four independent electromagnets 41-44. Each of these electromagnets 41-44 has a structure in which a coil 45 to which power is applied is wound around a magnetic member 46 having a quadrant arc shape as shown in FIG. 5 (extracted from only one electromagnet). It is.
여기서 상기 전자석부재(40)의 각 전자석(41-44)들에는 각각 선택적으로 전원이 인가되도록 하여 전원이 인가된 전자석에 한해서만 전자력이 발생되도록 하였다.예컨대, 제4도 및 제6도를 참조하면, 광픽업(70)으로부터 광빔이 조사되어 선택된 디스크(80)의 트랙에 초점을 맞추면서 정보를 기록/재생하는 도중에 광빔의 초점이 트랙으로부터 오른쪽 방향으로 오차한계를 벗어나게 되거나 디스크(80)가 턴테이블(32)에 안착될 시 편심되어 안착되게 되면, 광빔의 조사로 얻어진 트랙에러신호를 통상의 광검출기(미도시)로부터 검출하여 전기적 신호로서 변환하여서 광 픽업(70)의 왼쪽에 위치한 전자석(42)에만 인가한다. 이때 클램핑부재(60)는 자성체(50)가 전자석(42)에 의해서 왼쪽방향으로 끌리게 되어 클램핑부재(60)의 단부에 부착된 영구자석(90)과 디스크(80)와의 마찰력을 극복하고 즉, 클램핑부재와 턴테이블에 의한 디스크의 클램핑력을 극복하고 제6도에 도시된 바와같이 디스크(80)는 오차한계를 벗어난 거리만큼 왼쪽방향으로 이동하게 된다.Here, each of the electromagnets 41-44 of the electromagnet member 40 is selectively supplied with power so that only the electromagnet to which the power is applied is generated. For example, referring to FIGS. 4 and 6 When the light beam is irradiated from the optical pickup 70 and focuses on the track of the selected disk 80, the focus of the light beam is out of the error limit in the right direction from the track while the information is recorded / reproduced, or the disk 80 is turnedtable. 32, the electromagnet 42 located on the left side of the optical pickup 70 detects a track error signal obtained by irradiation of a light beam from an ordinary photodetector (not shown) and converts it into an electrical signal when it is eccentrically seated. Only authorized. At this time, the clamping member 60 is the magnetic material 50 is attracted to the left by the electromagnet 42 to overcome the friction between the permanent magnet 90 and the disk 80 attached to the end of the clamping member 60, that is, Overcoming the clamping force of the disk by the clamping member and the turntable, as shown in FIG. 6, the disk 80 moves to the left by a distance outside the error limit.
이와 같이, 전자석(41-44)에 의해 자성체(50)가 위치 이동되고, 동시에 클램핑부재(60)에 결합된 센터링콘(33)도 함께 이동되게 된다. 이에 따라, 센터링콘(33)이 끼워져 있는 디스크도 턴테이블에 대해 슬립되면서 반경방향으로 이동될 수 있다. 이에 따라서 디스크(80)의 선택된 조사범위내로 들어오게 되어 정상적으로 기록/재생동작을 수행할 수 있게 한다.As such, the magnetic body 50 is moved by the electromagnets 41-44, and the centering cone 33 coupled to the clamping member 60 is also moved together. Accordingly, the disk into which the centering cone 33 is inserted can also be moved radially while slipping with respect to the turntable. Accordingly, it enters the selected irradiation range of the disc 80 so that the recording / playback operation can be normally performed.
그리고, 상기 센터링콘(33)이 상기 디스크의 중심구멍을 관통하여 클램핑되어 있으며, 디스크를 클램핑하는 힘 즉, 영구자석(90)에 의해 클램핑부재(60)와 턴테이블이 디스크를 압착하는 압착력은 디스크가 회전시 발생되는 원심력보다는 휠씬 크게 설정되어 있으므로, 고속회전시 디스크가 축방향이나 반경방향으로 이탈되는 것이 방지 된다.The centering cone 33 is clamped through the center hole of the disk, and the clamping force of the clamping member 60 and the turntable compresses the disk by the permanent magnet 90. Is set much larger than the centrifugal force generated during rotation, so that the disk is prevented from deviating in the axial direction or the radial direction during the high speed rotation.
한편, 제7도에 도시된 바와 같이 상기 디스크(80)와 접촉되는 영구자석(90)의 단부에 마찰부재(100)를 부착하여 디스크(80)를 클램핑할시 디스크(80)를 보호할 수 있도록 하였고, 또한 상기 이동수단에 의해서 영구자석(90)과 디스크(80)가 마찰접촉할시 마찰력이 크도록 하여 미끄러지지 않고 이동될 수 있도록 하였다.Meanwhile, as illustrated in FIG. 7, the friction member 100 may be attached to an end portion of the permanent magnet 90 contacting the disk 80 to protect the disk 80 when clamping the disk 80. In addition, the permanent magnet 90 and the disk 80 by the moving means so that the frictional force is large when the friction contact makes it possible to move without slipping.
이상에서 설명한 바와 같이 본 고안에 따른 디스크 클램핑장치는 다음과 같은 이점을 가진다.As described above, the disk clamping device according to the present invention has the following advantages.
첫째, 디스크가 턴테이블에 편심되어 안착되거나 광빔의 초점이 트랙오차범위를 벗어나더라도 전자력에 의해서 디스크를 오차범위내로 이동시킴으로서 정확한 기록/재생을 할 수 있게 한다.First, even if the disk is eccentrically seated on the turntable or the focus of the light beam is out of the track error range, the disk is moved within the error range by the electromagnetic force, thereby enabling accurate recording / reproducing.
둘째, 영구자석의 자력으로 디스크를 클램핑할시에 발생할 수 있는 디스크 손상을 영구자석에 마찰부재를 부착함으로써 방지할 수 있다.Second, disc damage that may occur when the disc is clamped by the magnetic force of the permanent magnet can be prevented by attaching a friction member to the permanent magnet.
세째, 센터링콘과 디스크의 중심구멍 크기에 공차를 둠으로써 제작이 수월하다.Third, it is easy to manufacture by placing a tolerance on the center hole size of the centering cone and the disk.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019940006383U KR200168967Y1 (en) | 1994-03-29 | 1994-03-29 | Disc Clamping Device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019940006383U KR200168967Y1 (en) | 1994-03-29 | 1994-03-29 | Disc Clamping Device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR950028476U KR950028476U (en) | 1995-10-20 |
| KR200168967Y1 true KR200168967Y1 (en) | 2000-02-01 |
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ID=19379869
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019940006383U Expired - Lifetime KR200168967Y1 (en) | 1994-03-29 | 1994-03-29 | Disc Clamping Device |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR200168967Y1 (en) |
-
1994
- 1994-03-29 KR KR2019940006383U patent/KR200168967Y1/en not_active Expired - Lifetime
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| Publication number | Publication date |
|---|---|
| KR950028476U (en) | 1995-10-20 |
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