KR100202018B1 - Device for adjusting tension of flexible printed circuit board in optical pickup unit - Google Patents

Device for adjusting tension of flexible printed circuit board in optical pickup unit Download PDF

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Publication number
KR100202018B1
KR100202018B1 KR1019960025089A KR19960025089A KR100202018B1 KR 100202018 B1 KR100202018 B1 KR 100202018B1 KR 1019960025089 A KR1019960025089 A KR 1019960025089A KR 19960025089 A KR19960025089 A KR 19960025089A KR 100202018 B1 KR100202018 B1 KR 100202018B1
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KR
South Korea
Prior art keywords
circuit board
printed circuit
flexible printed
optical pickup
pickup unit
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KR1019960025089A
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Korean (ko)
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KR980004502A (en
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박병철
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전주범
대우전자주식회사
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Priority to KR1019960025089A priority Critical patent/KR100202018B1/en
Publication of KR980004502A publication Critical patent/KR980004502A/en
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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/18—Printed circuits structurally associated with non-printed electric components
    • H05K1/189—Printed circuits structurally associated with non-printed electric components characterised by the use of a flexible or folded printed circuit

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Moving Of Heads (AREA)
  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)

Abstract

본 발명은 플렉시블 인쇄회로기판의 장력을 일정하게 유지함으로써 플렉시블 인쇄회로기판의 단락 및 훼손을 방지할 수 있는 광픽업 유닛트의 플렉시블 인쇄회로기판 장력조절장치에 관한 것으로서, 광픽업 유닛트의 일측면에 형성된 래크기어와; 이 래크기어에 이맞물림되어, 드라이브 유닛트에 회전가능하게 축설되는 중계기어와; 이 중계기어에 이맞물림되어 상기 광픽업 유닛트와 역방향으로 미끄럼이송되도록 드라이브 유닛트에 설치되는 이송부재와; 이 이송부재에 그 일측이 탄설되며, 타측이 플렉시블 인쇄회로기판이 내측면을 가이드하여 플렉시블 인쇄회로기판의 장력을 일정하게 유지시키는 가이드레버를 포함하여 구성된다.The present invention relates to a flexible printed circuit board tension control device of an optical pickup unit that can prevent a short circuit and damage of the flexible printed circuit board by maintaining a constant tension of the flexible printed circuit board, which is formed on one side of the optical pickup unit Rack gears; A relay gear meshed with the rack gear and rotatably arranged in the drive unit; A transfer member meshed with the relay gear and installed in the drive unit to slide in a direction opposite to the optical pickup unit; One side of the conveying member is coalesced, and the other side includes a guide lever for guiding the inner surface of the flexible printed circuit board to maintain a constant tension of the flexible printed circuit board.

따라서, 광픽업 유닛트가 피이딩부재를 따라 이송되는 힘을 이용하여 플렉시블 인쇄회로기판의 장력을 조절할 수 있는 단순한 구조로 플렉시블 인쇄회로기판의 단락 및 훼손을 방지할 수 있게 된다.Accordingly, the optical pickup unit can prevent short circuit and damage of the flexible printed circuit board with a simple structure that can adjust the tension of the flexible printed circuit board by using the force transferred along the feeding member.

Description

광픽업 유닛트의 플렉시블 인쇄회로기판 장력조절장치Flexible printed circuit board tension control unit of optical pickup unit

제1도는종래 광디스크장치의 광픽업 유닛트를 도시한 측단면도.1 is a side cross-sectional view showing an optical pickup unit of a conventional optical disc apparatus.

제2도는 본 발명에 따른 광픽업유니트의 플렉시블 인쇄회로기판 장력조절장치를 도시한 평면도.2 is a plan view showing a tension control device for a flexible printed circuit board of the optical pickup unit according to the present invention.

제3도는 본 발명의 측단면도.3 is a side cross-sectional view of the present invention.

제4도(a)(b)는 본 발명의 작동전후 상태를 도시한 측단면도.Figure 4 (a) (b) is a side cross-sectional view showing a state before and after the operation of the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

50 : 래크기어 60 : 중계기어50: rack gear 60: relay gear

70 : 이송부재 80 : 가이드레버70: transfer member 80: guide lever

본 발명은 광디스크장치에 관한 것으로서, 더욱 상세하게는 플렉시블 인쇄회로기판의 장력을 일정하게 유지함으로써 플렉시블 인쇄회로기판의 단락 및 훼손을 방지할 수 있는 광픽업 유닛트의 플렉시블 인쇄회로기판 장력조절장치에 관한 것이다.The present invention relates to an optical disk device, and more particularly, to a flexible printed circuit board tension control device of an optical pickup unit which can prevent short circuit and damage of a flexible printed circuit board by maintaining a constant tension of the flexible printed circuit board. will be.

일반적인 LDP(Laser Disk Player), CDP(Compact Disk Player), MOD(Magnetic Optical Driver)등 광기록매체를 이용한 광디스크장치는 광디스크에 광빔을 주사하고 광디스크에서 반사되는 광빔을 검출하여 광디스크에 기록된 정보를 판독하게 되는 광픽업 유닛트(Optical Pick up Unit)가 구비되는 바, 제1도는 종래 광픽업 유닛트를 도시한 것이다.An optical disk device using an optical recording medium such as a laser disk player (LDP), a compact disk player (CDP), and a magnetic optical driver (MOD) scans an optical beam on an optical disk, detects an optical beam reflected from the optical disk, and stores the information recorded on the optical disk. An optical pick up unit to be read is provided, and FIG. 1 shows a conventional optical pickup unit.

이는, 드라이브 유닛트(1)의 내측면에는 스핀들 구동모터(2)가 위치되고, 이 스핀들 구동모터(2)의 회전축(3)에는 광디스크(4)가 안착되는 턴테이블(5)이 압입 고정설치된다.The spindle drive motor 2 is positioned on the inner side of the drive unit 1, and the turntable 5, on which the optical disc 4 is seated, is press-fitted and fixed to the rotary shaft 3 of the spindle drive motor 2. .

그리고, 드라이브 유닛트(1)의 하측면에는 피이딩부재(6)가 설치되며, 이 피이딩부재(6)에는 이를 따라 이송되면서 광디스크(4)에 광빔을 주사하는 광센서(미도시)를 갖는 광픽업 유닛트(8)가 마련된다.And, the lower side of the drive unit 1 is provided with a feeding member 6, the feeding member 6 has an optical sensor (not shown) for scanning the light beam to the optical disk 4 while being transported along it The optical pickup unit 8 is provided.

또한, 전술한 광픽업 유닛트(8)에는 이 광픽업 유닛트(8)의 신호를 처리하도록 그 일측단은 광픽업 유닛트(8)에 연결되고, 타측단은 서브 인쇄회로기판(9)에 연결된 플렉시블 인쇄회로기판(flexible printed circuit board)(10)이 구비된다.In addition, in the above-described optical pickup unit 8, one end thereof is connected to the optical pickup unit 8, and the other end thereof is connected to the sub printed circuit board 9 so as to process the signal of the optical pickup unit 8. A printed circuit board 10 is provided.

그러나, 이와 같이 구성된 일반적인 광픽업 유닛트는 장시간 반복적인 사용으로 광픽업 유닛트가 피이딩부재를 따라 이송될 때, 플렉시블 인쇄회로기판이 일정한 장력을 유지하지 못하게 되어 즉, 반복적으로 접힘현상이 발생되어 단락되거나 훼손되는 문제점이 있었다.However, the general optical pickup unit configured as described above does not maintain the constant tension of the flexible printed circuit board when the optical pickup unit is transported along the feeding member due to repeated use for a long time. There was a problem of being damaged or damaged.

본 발명은 상기와 같은 종래의 문제점을 감안하여 안출된 것으로서, 플렉시블 인쇄회로기판의 장력을 일정하게 유지함으로써 플렉시블 인쇄회로기판의 단락을 방지할 수 있는 광픽업 유닛트의 플렉시블 인쇄회로기판 장력조절장치를 제공하는데 그 목적이 있다.SUMMARY OF THE INVENTION The present invention has been made in view of the above-described conventional problems, and provides a flexible printed circuit board tension control device of an optical pickup unit that can prevent a short circuit of the flexible printed circuit board by maintaining a constant tension of the flexible printed circuit board. The purpose is to provide.

상기의 목적은, 광디스크의 반경방향으로 드라이브 유닛트에 설치된 피이딩부재를 따라 이송되며, 상기 광디스크에 빔을 주사하고, 주사된 빔을 통해 정보를 읽어내는 광픽업 유닛트와; 상기 광픽업 유닛트의 신호를 처리하도록 그 일측단은 상기 광픽업 유닛트에 연결되고, 타측단은 서브 인쇄회로기판에 연결된 플렉시블 인쇄회로기판을 구비하는 광디스크 장치에 있어서, 상기 광픽업 유닛트의 일측면에 형성된 래크기어와;The above object includes: an optical pickup unit which is conveyed along a feeding member installed in a drive unit in a radial direction of an optical disc, scans a beam onto the optical disc, and reads information through the scanned beam; An optical disc apparatus having a flexible printed circuit board having one end connected to the optical pickup unit and the other end connected to a sub printed circuit board so as to process a signal of the optical pickup unit, wherein the one end of the optical pickup unit has a flexible printed circuit board. A rack gear formed;

상기 래크기어에 이맞물림되어 상기 드라이브 유닛트에 회전가능하게 축설되는 중계기어와; 상기 중계기어에 이맞물림되어 상기 광픽업 유닛트와 역방향으로 미끄럼이송되도록 상기 드라이브 유닛트에 설치되는 이송부재와; 상기 이송부재에 그 일측이 탄설되며, 타측이 상기 플렉시블 인쇄회로기판의 내측면을 가이드하여 상기 플렉시블 인쇄회로기판의 장력을 일정하게 유지시키는 것을 특징으로 하는 광픽업 유닛트의 플렉시블 인쇄회로기판의 장력조절장치를 제공함으로써 달성될 수 있다.A relay gear meshed with the rack gear and rotatably arranged in the drive unit; A transfer member meshed with the relay gear and installed on the drive unit to slide in a direction opposite to the optical pickup unit; One side of the transfer member is coalesced, and the other side guides the inner surface of the flexible printed circuit board to maintain the tension of the flexible printed circuit board, wherein the tension of the flexible printed circuit board of the optical pickup unit is constant. By providing a device.

이하, 본 발명에 따른 광픽업 유닛트의 플렉시블 인쇄회로기판 장력조절장치를 첨부된 도면에 의해 상세히 설명한다.Hereinafter, a flexible printed circuit board tension control device of an optical pickup unit according to the present invention will be described in detail with the accompanying drawings.

제2도는 본 발명에 따른 광픽업 유닛트의 플렉시블 인쇄회로기판 장력조절장치를 도시한 평면도이고, 제3도는 본 발명의 측단면도이고, 제4도(a)(b)는 본 발명의 작동전후 상태를 도시한 측단면도이다.2 is a plan view showing the tension control device of the flexible printed circuit board of the optical pickup unit according to the present invention, Figure 3 is a side cross-sectional view of the present invention, Figure 4 (a) (b) before and after the operation of the present invention Side cross-sectional view showing.

본 발명의 설명에 있어서 종래 기술과 동일기술에는 동일 부호를 부여한다.In description of this invention, the same code | symbol is attached | subjected to the prior art and the same technique.

이에 도시된 바와 같이 본 발명 광픽업 유닛트의 플렉시블 인쇄회로기판 장력조절장치는, 우선 드라이브 유닛트(1)의 내측면에 스핀들 구동모터(2)가 위치되고, 이 스핀들 구동모터(2)의 회전축(3)에는 광디스크(4)가 안착되는 턴테이블(5)이 압입 고정설치된다.As shown in the figure, in the flexible printed circuit board tension control device of the optical pickup unit of the present invention, first, the spindle drive motor 2 is positioned on the inner side of the drive unit 1, and the rotary shaft of the spindle drive motor 2 3), the turntable 5 on which the optical disk 4 is mounted is press-fitted and fixed.

그리고, 드라이브 유닛트(1)의 하측면에는 피이딩부재(6)가 설치되며, 이 피이딩부재(6)에는 이를 따라 이송되면서 광디스크(4)에 광빔을 주사하고, 반사된 빔을 검출하는 광센서(미도시)를 갖는 광픽업 유닛트(8)가 마련된다.Then, a feeding member 6 is installed on the lower side of the drive unit 1, and the feeding member 6 scans the light beam to the optical disc 4 while being transported along with it, and detects the reflected beam. An optical pickup unit 8 having a sensor (not shown) is provided.

전술한 광픽업 유닛트(8)에는, 이 광픽업 유닛트(8)의 신호를 처리하도록 그 일측단은 광픽업 유닛트(8)에 연결되고, 타측단은 서브 인쇄회로기판(9)에 연결된 플렉시블 인쇄회로기판(flexible printed circuit board)(10)이 구비된다.In the above-described optical pickup unit 8, one end thereof is connected to the optical pickup unit 8 and the other end thereof is connected to the sub printed circuit board 9 so as to process the signal of the optical pickup unit 8. A flexible printed circuit board 10 is provided.

그리고, 본 발명의 특징적인 요소로서 광픽업 유닛트(8)의 일측면에는 래크기어(50)가 형성된다. 이 래크기어(50)와 인접하는 드라이브 유닛트(1)에는 래크기어(50)와 이맞물림되어 회전가능하도록 중계기어(60)가 축지지된다.As a characteristic element of the present invention, a rack gear 50 is formed on one side of the optical pickup unit 8. The relay gear 60 is axially supported by the drive unit 1 adjacent to the rack gear 50 so as to be engaged with the rack gear 50 and rotatable.

또한, 전술한 드라이브 유닛트(1)에는 전술한 중계기어(60)와 이맞물림되어 광픽업 유닛트(8)와 역방향으로 미끄럼이송되도록 이송부재(70)가 마련된다. 이 이송부재(70)의 일측에는 드라이브 유닛트(1)의 가이드돌기(1a)에 걸림유지되어 용이하게 미끄럼이송되도록 가이드홈(70a)이 형성되며, 타측에는 가이드레버(80)가 탄력있게 설치된다.In addition, the drive unit 1 is provided with a conveying member 70 which meshes with the above-described relay gear 60 and slides in the opposite direction to the optical pickup unit 8. One side of the transfer member 70 is formed with a guide groove (70a) so as to be retained in the guide projection (1a) of the drive unit (1) to easily slide, the guide lever 80 is elastically installed on the other side .

전술한 가이드레버(80)는 더욱 상세하게 그 일측이 이송부재(70)의 상측면에 탄력있게 설치되고, 타측은 플렉시블 인쇄회로기판(10)의 내측면(10a)에 접촉되어 플렉시블 인쇄회로기판(10)의 장력을 일정하게 유지시키도록 구성된다.In detail, the above-described guide lever 80 is elastically installed at one side of the upper side of the transfer member 70, and the other side of the guide lever 80 is in contact with the inner surface 10a of the flexible printed circuit board 10. And to keep the tension of (10) constant.

이와 같이 구성된 본 발명 광픽업 유닛트의 플렉시블 인쇄회로기판 장력조절장치는, 우선 도면에 도시되지 않은 스핀들 구동모터(2)의 구동에 의해 턴테이블(5)상으로 안내된 광디스크(4)가 가이드플레이트(미도시) 및 클램핑장치(미도시)에 의해 턴테이블(5)상에 안착완료 되면, 광픽업 유닛트(8)가 피이딩부재(7)를 따라 광디스크(4)방향으로 이동하면서, 광디스크(4)에 빔을 주사하고 반사된 빔을 검출하여 정보를 판독하게 된다.In the flexible printed circuit board tension adjusting device of the optical pickup unit of the present invention configured as described above, the optical disk 4 guided on the turntable 5 by the drive of the spindle drive motor 2, not shown in the drawing, is provided with a guide plate ( When the mounting is completed on the turntable 5 by the clamping device (not shown) and the clamping device (not shown), the optical pickup unit 8 moves along the feeding member 7 in the direction of the optical disk 4, and thus the optical disk 4 It scans the beam and detects the reflected beam to read the information.

전술한 광픽업 유닛트(8)가 피이딩부재(7)를 광디스크(4)방향으로 이동하게 됨에 따라 광픽업 유닛트(8)이 일측에 형성된 래크기어(50)에 이맞물림되어 있는 중계기어(60)가 반시계방향으로 회전하게 된다.As the above-described optical pickup unit 8 moves the feeding member 7 in the direction of the optical disk 4, a relay gear in which the optical pickup unit 8 is engaged with the rack gear 50 formed on one side thereof ( 60) rotates counterclockwise.

이때, 제4도(a)에 도시된 바와 같이 중계기어(60)와 이맞물림되어 있는 이송부재(70)가 가이드홈(70a)을 따라 광픽업 유닛트(8)와 반대방향으로 이동하게 된다.In this case, as illustrated in FIG. 4A, the transfer member 70 engaged with the relay gear 60 moves in the opposite direction to the optical pickup unit 8 along the guide groove 70a.

이에 따라, 제4도(b)에 도시된 바와 같이 이송부재(70)의 일측에 탄력있게 설치된 가이드레버(80)가 플렉시블 인쇄회로기판(10)의 내측면(10a)에 접촉된 상태로, 플렉시블 인쇄회로기판(10)을 가이딩하면서 플렉시블 인쇄회로기판(10)의 장력을 일정하게 유지하게 된다.Accordingly, as shown in FIG. 4B, the guide lever 80 elastically installed at one side of the transfer member 70 is in contact with the inner surface 10a of the flexible printed circuit board 10. The tension of the flexible printed circuit board 10 is kept constant while guiding the flexible printed circuit board 10.

따라서, 광픽업 유닛트(8)의 정지시에는 물론 이송시에도 플렉시블 인쇄회로기판(10)의 장력을 일정하게 유지시킴으로써 장시간 반복적인 사용시에도 플렉시블 인쇄회로기판(10)의 단락 및 훼손을 방지할 수 있게 된다.Therefore, the tension of the flexible printed circuit board 10 is kept constant at the time of stopping the optical pickup unit 8 as well as during transportation, thereby preventing short-circuit and damage of the flexible printed circuit board 10 even during repeated long-term use. Will be.

한편, 상기한 실시예는 본 발명의 바람직한 하나의 실시예를 설명한 것에 불과하고, 본 발명의 적용범위는 이와 같은 것에 한정되는 것은 아니며 동일사상의 범주내에서 적절하게 변경가능한 것이다.On the other hand, the above embodiment is merely to describe one preferred embodiment of the present invention, the scope of the present invention is not limited to this, and can be changed as appropriate within the scope of the same idea.

이상에서 설명한 바와 같이 본 발명 광픽업 유닛트의 플렉시블 인쇄회로기판 장력조절장치에 의하면, 광픽업 유닛트가 피이딩부재를 따라 이송되는 힘을 이용하게 플렉시블 인쇄회로기판의 장력을 조절할 수 있는 구조이어서 플렉시블 인쇄회로기판의 단락 및 훼손을 방지할 수 있는 효과를 얻을 수 있다.As described above, according to the flexible printed circuit board tension control device of the optical pickup unit of the present invention, since the optical pickup unit can control the tension of the flexible printed circuit board by using the force transferred along the feeding member, the flexible printed circuit board can be flexibly printed. The effect of preventing the short circuit and damage of the circuit board can be obtained.

Claims (1)

광디스크의 반경방향으로 드라이브 유닛트에 설치된 피이딩부재를 따라 이송되며, 상기 광디스크에 빔을 주사하고, 주사된 빔을 통해 정보를 읽어내는 광픽업 유닛트와; 상기 광픽업 유닛트의 신호를 처리하도록 그 일측단은 상기 광픽업 유닛트에 연결되고, 타측단은 서브 인쇄회로기판에 연결된 플렉시블 인쇄회로기판을 구비하는 광디스크 장치에 있어서, 상기 광픽업 유닛트(8)의 일측면에 형성된 래크기어(50)와; 상기 래크기어(50)에 이맞물림되어 상기 드라이브 유닛트(1)에 회전가능하게 축설되는 중계기어(60)와; 상기 중계기어(60)에 이맞물림되어 상기 광픽업 유닛트(8)와 역방향으로 미끄럼이송되도록 상기 드라이브 유닛트(1)에 설치되는 이송부재(70)와; 상기 이송부재(70)에 그 일측이 탄설되며, 타측이 상기 플렉시블 인쇄회로기판(10)의 내측면(10a)을 가이드하여 상기 플렉시블 인쇄회로기판(10)의 장력을 일정하게 유지시키는 가이드레버(80)를 포함하여 구성된 것을 특징으로 하는 광픽업 유닛트의 플렉시블 인쇄회로기판의 장력조절장치.An optical pickup unit which is conveyed along a feeding member installed in the drive unit in a radial direction of the optical disk, scans a beam on the optical disk, and reads information through the scanned beam; An optical disc apparatus comprising a flexible printed circuit board having one end connected to the optical pickup unit and the other end connected to a sub printed circuit board so as to process a signal of the optical pickup unit. A rack gear 50 formed on one side; A relay gear (60) meshed with the rack gear (50) and rotatably arranged in the drive unit (1); A transfer member (70) meshed with the relay gear (60) and installed in the drive unit (1) so as to slide in a reverse direction with the optical pickup unit (8); One side is mounted on the conveying member 70, the other side guides the inner surface (10a) of the flexible printed circuit board 10 to maintain a constant tension of the flexible printed circuit board 10 ( Tension control device for a flexible printed circuit board of the optical pickup unit, characterized in that it comprises a).
KR1019960025089A 1996-06-28 1996-06-28 Device for adjusting tension of flexible printed circuit board in optical pickup unit KR100202018B1 (en)

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KR100202018B1 true KR100202018B1 (en) 1999-06-15

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