KR950000895B1

KR950000895B1 - Focus control apparatus for multi optical disk player

Info

Publication number: KR950000895B1
Application number: KR1019920025158A
Authority: KR
Inventors: 김의정
Original assignee: 주식회사 금성사; 이헌조
Priority date: 1992-12-23
Filing date: 1992-12-23
Publication date: 1995-02-03
Also published as: KR940016041A

Abstract

A focus control device of a optical multi disk player reproduces several kinds of disks in a size such as a compact disk and a video disk, etc. and particularly control a focus distance between the optical disk and a pick-up thereby to prevent a tracking direction deviation of the optical disk and an angle degree deviation between the optical disk and a pick-up. The device includes a motor; a guide support part joined and fixed to a main base; a driving support part inserted into the motor and also set into the main base; an operating support part operating and moving vertically upwards and downwards; and an elastic support part supported elastically on the inside of the operating support part.

Description

Focus control of multi optical disc player

제 1 도는 종래의 초점 조절장치의 부품도.1 is a component diagram of a conventional focusing apparatus.

제 2 도는 종래의 초점 조절장치를 나타낸 것으로, (a)는 구성결합도이고, (b)는 작동상태도이다.Figure 2 shows a conventional focusing apparatus, (a) is a constitutive coupling, (b) is an operating state diagram.

제 3 도는 종래의 초점 조절방식을 도시한 개략도.3 is a schematic diagram showing a conventional focusing method.

제 4 도는 본 발명의 분해사시도.4 is an exploded perspective view of the present invention.

제 5 도는 본 발명의 구성결합도.5 is a structural coupling diagram of the present invention.

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

1 : 스핀들 모터 2 : 안내부재1: spindle motor 2: guide member

3 : 구동부재 4 : 작동부재3: driving member 4: operating member

5 : 탄성부재 20 : 고정부5 elastic member 20 fixed part

21 : 가이드부 22 : 스프링 고정부21: guide portion 22: spring fixing portion

30 : 기어부 31 : 캠곡선부30: gear portion 31: cam curve portion

40 : 고정판부 41 : 작동부40: fixed plate portion 41: operating portion

42 : 수납부 210 : 홈42: storage 210: groove

220 : 걸림턱 410 : 지지편220: engaging jaw 410: support piece

411 : 작동봉411: working rod

본 발명은 콤팩트 디스크 및 비디오 디스크등과 같이 크기가 다른 여러종류의 디스크를 재생하는 멀티광디스크 플레이어에 관한 것으로, 특히 스핀들 모터를 상, 하 수직 이동시켜 광디스크와 픽업간의 초점거리를 조절할수 있도록 하므로서 광디스크의 트래킹 방향 편차 및 광디스크와 픽업간의 각도편차를 방지할수 있는 멀티 광디스크 플레이어의 초점 조절장치에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-optical disc player for playing various types of discs of different sizes, such as compact discs and video discs. In particular, an optical disc is made by adjusting a focal length between an optical disc and a pickup by vertically moving a spindle motor. The present invention relates to a focusing apparatus of a multi-optical disc player capable of preventing the tracking direction deviation and the angular deviation between the optical disc and the pickup.

그 구성은 제 1 도 및 제 2 도에 도시된 바와같이, 광디스크(50)가 안착되어져 이를 회전시킬 수 있도록 구동력을 발생하고, 일측에 리프트 스프링(101)으로 탄지된 가이드핀(102)을 가지는 스핀들 모터(100)와, 메인베이스(600)에 안착되어져 로딩모터(Loading Moter)(미도시됨)의 구동에 따라 구동될수 있도록 외주연에 기어부(202)가 형성되고, 상부면은 일측으로 경사진 캠곡선부(201)가 갖추어진 캠구동체(200)와, 상기 스핀들 모터(Spindle Moter)(100)와 결합되고, 일측에는 상기 캠구동체(200)의 캠곡선부(201)에 미끄럼 접속되어 전동될 수 있는 구동핀(301)과, 상기 구동핀(301)의 미끄럼 접촉전동에 의한 회전시 중심역할을 하는 리프트 힌지(302)가 구비된 모터홀더(300)와, 메인베이스(600)에 고정됨과 아울러 스핀들 모터(100)에 구비된 리프트 스프링(101)이 삽입되어 지지될 수 있는 스프링 지지홈(402)이 갖추어지고, 상기 모터홀더(300)의 리프트 힌지(302)가 끼움 결합되어 리프트 힌지(302)를 지지하는 리프트 힌지 지지홈(401)을 가지는 모터브라켓(400)와, 상기 모터브라켓(400)에 끼움 결합된 리프트 힌지(302)의 유동 및 이탈을 방지할수 있도록 고정구멍(501)이 형성된 고정용 판스프링(500)으로 구성된 것이다.As shown in FIGS. 1 and 2, the configuration of the optical disk 50 is seated and generates a driving force to rotate it, and has a guide pin 102 supported by a lift spring 101 on one side. The gear unit 202 is formed on the outer circumference of the spindle motor 100 and the main base 600 to be driven according to the driving of a loading motor (not shown), and the upper surface of the gear unit 202 is formed on one side. The cam drive unit 200 is provided with an inclined cam curve unit 201 and the spindle motor 100, one side of the cam drive unit 201 of the cam drive unit 200 The motor holder 300 is provided with a driving pin 301 that can be slid and electrically driven, a lift hinge 302 which serves as a center when the driving pin 301 rotates by sliding contact motor, and a main base. In addition to being fixed to 600, the lift spring 101 provided in the spindle motor 100 is inserted and supported. And a motor bracket 400 having a spring support groove 402 having a lift hinge support groove 401 to which the lift hinge 302 of the motor holder 300 is fitted to support the lift hinge 302. The fixing plate spring 500 is formed with a fixing hole 501 so as to prevent flow and detachment of the lift hinge 302 fitted to the motor bracket 400.

이러한 구성으로 된 종래의 멀티 광디스크 플레이어의 초점 조절장치는 로딩모터(미도시됨)가 구동하게 되면 이의 구동력을 캠구동체(200)의 기어부(202)가 기어전동으로 전달받아 캠구동체(200)가 정회전하게 된다.The focus control apparatus of the conventional multi-optical disc player having such a configuration receives the driving force of the cam driver 200 from the gear unit 202 of the cam driver 200 when the loading motor (not shown) is driven to the gear drive. 200) will be rotated forward.

상기 캠구동체(200)가 정회전하게 되면 캠구동체(200)의 상부면에 형성된 캠곡선부(201)를 따라 모터홀더(300)의 리프트핀(301)이 미끄럼 접촉으로 진동하게 되는데, 이때 상기 리프트핀(301)은 스핀들 모터(100)에 구비된 리프트 스프링(101)의 탄성력에 의해서 캠곡선부(201)에 밀착되게 된다.When the cam driver 200 rotates forward, the lift pin 301 of the motor holder 300 vibrates by sliding contact along the cam curve portion 201 formed on the upper surface of the cam driver 200. The lift pin 301 is in close contact with the cam curve portion 201 by the elastic force of the lift spring 101 provided in the spindle motor (100).

그리고 리프트핀(301)의 미끄럼 접촉전동에 의해서 모터홀더(300)는 모터브라켓(400)의 리프트 힌지 지지홈(401)에 끼움결합된 리프트 힌지(302)를 중심으로 광디스크(50)가 안착된 스핀들모터(100)와 함께 일방향으로 기울어지게 되어 광디스크(50)가 일측으로 기울어진 양만큼 타측부가 상승되어 픽업(60)과 초점거리를 갖게 되므로서 초점을 조절할수 있도록한 것이다.The optical disk 50 is seated around the lift hinge 302 fitted to the lift hinge support groove 401 of the motor bracket 400 by sliding contact movement of the lift pin 301. It is inclined in one direction together with the spindle motor 100 so that the other side is raised by the amount the optical disk 50 is inclined to one side, so that the focus can be adjusted while having the focal length with the pickup 60.

그러나 이러한 종래의 멀티 광디스크 플레이어의 초점 조절방법은 제 3 도의 (a)에 도시된 바와같이 초기 중립위치 즉, x1거리에서 픽업(60)의 초점조절시 구동체의 작동에 의해 광디스크(50)가 일측으로 기울어지게 되면 제 3 도의 (b)에 도시된 바와같이 광디스크(50)의 정보를 읽기 위해서 광디스크(50)와 수직방향을 유지해야 되는 픽업(60) 또한 기울어져야 하므로 픽업(60)의 틸트센서에 의한 틸트보정작동이 이루어져야 되고, x2의 거리차에 따른 트래킹 방향에 대한 오차 즉, x1-x2=x1(1-cosθ)이 발생하며, 200g정도의 무게를 갖는 광디스크(50)를 1800rpm정도의 고속으로 회전시키는 스핀들 모터(100)가 리프트 힌지(302)두곳에 의해 지지되어 있어 진동발생시 지지력이 약한 문제점이 있다.However, such a conventional method for adjusting the focus of a multi-optical disk player has shown that the optical disk 50 is driven by the operation of the driving body when focusing the pickup 60 at an initial neutral position, that is, x1 distance, as shown in FIG. When tilted to one side, as shown in (b) of FIG. 3, the pickup 60, which should be kept perpendicular to the optical disc 50 in order to read the information of the optical disc 50, must also be tilted, so the tilt of the pickup 60 is tilted. The tilt correction operation by the sensor should be made, and an error about the tracking direction according to the distance difference of x2, that is, x1-x2 = x1 (1-cosθ) occurs, and the optical disc 50 having a weight of about 200g is about 1800 rpm. Spindle motor 100 for rotating at a high speed of the support is supported by two lift hinges 302, there is a problem that the bearing force is weak when vibration occurs.

따라서 본 발명은 이러한 제반 문제점을 해소하기 위해서 안출된 것으로, 멀티 광디스크 플레이어의 초점조절시 스핀들 모터를 상, 하 수직 이동시켜 광디스크와 픽업간의 초점거리를 조절하므로서 광디스크의 트래킹 방향편차 및 광디스크와 픽업간의 각도편차를 방지할 수 있는 멀티 광디스크 플레이어의 초점 조절장치를 제공함에 그 목적이 있다.Therefore, the present invention has been made to solve the above problems, and by adjusting the focal length between the optical disk and the pickup by moving the spindle motor up and down vertically when adjusting the focus of the multi-optical disk player and the tracking direction deviation of the optical disk and between the optical disk and the pickup It is an object of the present invention to provide a focus control device for a multi-optical disk player that can prevent angular deviation.

본 발명의 일실시예를 제 4 도 및 제 5 도를 참조로 하여 구체적으로 설명하면 다음과 같다.An embodiment of the present invention will be described in detail with reference to FIGS. 4 and 5 as follows.

본 발명은 캠구동에 의한 작동체의 3점 미끄럼 접촉전동으로 광디스크가 안착된 스핀들 모터를 상, 하 수직 이동시켜 광디스크와 픽업간의 초점거리를 조절하는 것으로서, 그 구성은 광디스크(50)가 안착되어져 이를 회전시킬수 있도록 구동력을 발생하는 스핀들 모터(1)와, 메인베이스(600)에 결합고정되어 스핀들 모터(1)가 상, 하 수직 이동되도록 작동체를 지지함과 아울러 안내하는 안내부재(2)와, 상기 스핀들 모터(1)에 삽입됨과 아울러 메인베이스(600)에 안착되어 로딩모터(미도시됨)의 구동력을 전달받아 캠구동에 의한 전동으로 스핀들 모터(1)가 상, 하 수직 이동되도록 구동력을 발생하는 구동부재(3)와, 상기 구동부재(3)의 캠구동에 의한 미끄럼 접촉전동으로 상, 하 수직 작동되고, 스핀들 모터(1)와 결합되어 스핀들 모터(1)와 함께 상, 하 수직으로 이동되도록 작동하는 작동부재(4)와, 상기 작동부재(4)내부에 탄지되어 작동부재(4)의 미끄럼 접촉전동이 정확히 이루어지도록 밀착시키는 탄성부재(5)로 구성된 것이다.The present invention is to adjust the focal length between the optical disk and the pickup by vertically moving the spindle motor on which the optical disk is seated by the three-point sliding contact movement of the actuator by cam driving, the configuration is the optical disk 50 is seated Guide member (2) supporting and guiding the actuator so that the spindle motor (1) is vertically coupled to the spindle motor (1) and the main base (600) to generate a driving force to rotate it; In addition, the spindle motor 1 is inserted into the spindle motor 1 and seated on the main base 600 to receive the driving force of the loading motor (not shown) so that the spindle motor 1 is vertically moved by the cam drive. Up and down vertical operation by the drive member 3 for generating a driving force, and the sliding contact transmission by the cam drive of the drive member 3, combined with the spindle motor (1), together with the spindle motor (1) Vertically It is composed of an operating member (4) to operate to move, and the elastic member (5) to be in close contact with the operation member (4) in close contact so that the sliding contact transmission of the operating member (4).

즉, 상기 안내부재(2)는 메인베이스(600)에 결합고정되는 고정부(20)와, 작동부재(4)의 상, 하 수직작동을 안내하는 가이드부(21)와, 작동부재(4)내에 탄지되는 탄성부재(5)를 고정하는 스프링 고정부(22)가 구비된 것이다.That is, the guide member 2 is a fixed portion 20 is coupled to the main base 600, the guide portion 21 for guiding the vertical operation of the operating member 4, and the operating member 4 Spring is provided with a spring fixing part 22 for fixing the elastic member (5).

또한 구동부재(3)는 로딩모터(미도시됨)의 구동력을 기어전동으로 전달받아 구동되는 기어부(30)와, 상기 기어부(30)에 의한 캠구동으로 작동부재(4)가 미끄럼 접촉전동되는 캠곡선부(31)가 구비된 것이다.In addition, the driving member 3 is a gear unit 30 is driven by receiving the driving force of the loading motor (not shown) to the gear transmission and the operating member 4 is in sliding contact with the cam drive by the gear unit 30. Cam cam portion 31 to be transmitted is provided.

그리고 작동부재(4)는 스핀들 모터(1)와 결합고정되는 고정판부(40)와, 상기 고정판부(40)와 일체로 되어 로딩모터(미도시됨)에 의해 구동되는 구동부재(3)의 캠곡선부(31)와 미끄럼 접촉전동으로 상, 하 수직으로 작동되는 작동부(41)와, 탄성부재(5)가 내부로 탄지될 수 있도록 수납공간을 갖는 수납부(42)가 구비된 것이다.And the operating member 4 is a fixed plate portion 40 which is fixedly coupled to the spindle motor (1), and the driving plate (3) of the driving member (3) driven by a loading motor (not shown) integrally with the fixed plate portion 40 It is provided with an operating part 41 which is operated vertically and vertically by the cam curve part 31 and the sliding contact transmission, and an accommodating part 42 having an accommodating space so that the elastic member 5 can be carried inside. .

상기 안내부재(2)의 가이드부(21)는 안내부재(2)의 상면에서 하부 소정깊이로 파여진 홈(210)으로 형성되어 일정간격을 가지고 3방향에 위치되어 작동부재(4)의 작동부(41)를 안내 및 지지할수 있도록한 것이다.The guide portion 21 of the guide member 2 is formed of a groove 210 cut into the lower predetermined depth from the upper surface of the guide member 2 and is positioned in three directions with a predetermined interval to operate the operating member 4. It is to guide and support the portion (41).

또한 스프링 고정부(22)는 안내부재(2)의 내주연 상부애 내측으로 돌출되는 rjf림턱(220)을 다수 구비시켜 탄성부재(5)가 고정되도록 함과 아울러 탄성력이 스핀들 모터(1)와 결합되는 작동부재(4)의 하부로 작동될 수 있도록 하므로서 캠구동에 의한 미끄럼 접촉전동이 정확히 이루어질수 있도록 한 것이다.In addition, the spring fixing part 22 is provided with a plurality of rjf rim jaw 220 protruding into the inner peripheral upper portion of the guide member 2 to allow the elastic member 5 to be fixed, and the elastic force and the spindle motor (1) By being able to be operated to the lower portion of the operating member (4) to be coupled is to make the sliding contact transmission by the cam drive accurately.

그리고 구동부재(3)의 기어부(30)는 구동부재(3)하부 일측 외주연에 일측으로 경사진 일단의 곡면과 동일한 길이를 갖도록하여 로딩모터(미도시됨)의 구동에 의해서 정, 역으로 구동되도록한 것이고, 캠곡선부(31)는 일측으로 경사진 일단의 곡면이 동일크기와 간격으로 3방향에 위치되도록 하므로서 작동부재(4)가 기울어짐이 없이 상, 하 수직으로 작동될수 있도록한 것이다.In addition, the gear part 30 of the driving member 3 has the same length as one end of the curved surface inclined to one side on the outer periphery of the lower side of the driving member 3, thereby being driven forward and backward by the driving of the loading motor (not shown). The cam curve 31 is such that the curved surface of one end inclined to one side is positioned in three directions at the same size and interval so that the operating member 4 can be operated vertically without tilting. It is.

상기 작동부재(4)의 작동부(41)는 일정높이를 갖는 지지편(410)중앙부에 일정길이와 직경을 갖는 작동봉(411)이 일체로 갖추어져 상기 안내부재(2)의 가이드부(21)에 상응하도록 3방향으로 위치되어 구동부재(3)의 캠곡선부(31)를 따라 미끄럼 접촉전동되게 하므로서 기울어짐이 없이 상, 하 수직으로 작동될수 있도록한 것이다.The actuating part 41 of the actuating member 4 is integrally provided with an actuating rod 411 having a predetermined length and a diameter at a central portion of the support piece 410 having a predetermined height, and thus the guide part 21 of the guiding member 2. It is positioned in three directions so as to be in sliding contact movement along the cam curve 31 of the driving member 3 so that it can be operated vertically without tilting.

이와같이 구성된 본 발명은 멀티 광디스크 플레이어의 초점조절시 제 5 도에 도시된 바와같이 로딩모터(미도시됨)의 구동에 의한 기어진동으로 구동부재(3)를 정방향으로 구동시키게 되면 안내부재(2)의 가이드부(21)에 삽입된 작동부(41)의 작동봉(411)이 구동부재(3)의 캠곡선부(31)를 따라 3방향에서 동시에 미끄럼 접촉전동되어 작동부재(4)를 상부로 이동시킴과 아울러 작동부재(4)와 결합된 스핀들 모터(1)와 함께 상부로 수직 이동되므로서 기울어짐이 없이 스핀들모터(1)에 안착된 광디스크(50)가 이동되어 광디스크(50)와 픽업(60)간의 초점거리가 유지되어 초점을 조절할수 있게 되는 것이다.According to the present invention configured as described above, when the focus of the multi-optical disk player is adjusted, as shown in FIG. 5, the driving member 3 is driven in a forward direction by a gear vibration driven by a driving motor (not shown). The actuating rod 411 of the actuating portion 41 inserted into the guide portion 21 of the driving member is simultaneously slid-contacted in three directions along the cam curve portion 31 of the driving member 3 so that the actuating member 4 is moved upward. The optical disk 50 seated on the spindle motor 1 is moved without moving to the optical disk 50 by vertically moving upward with the spindle motor 1 coupled to the operation member 4. The focal length between the pickups 60 is maintained so that the focus can be adjusted.

한편, 로딩모터에 의한 상기 구동부재(3)를 역방향으로 구동시키게 되면 반대로 작동부재(4)의 작동봉(411)이 구동부재(3)의 캠곡선부(31)를 따라 하부로 미끄럼 접촉으로 전동되므로서 작동부재(4)는 하강하게 되고, 이와함께 스핀들 모터(1) 또한 하강하게 되므로서 광디스크(50)와 픽업(60)간의 초점거리를 조절하게 되는 것이다.On the other hand, when driving the drive member 3 by the loading motor in the reverse direction, the operating rod 411 of the operating member 4 is in the sliding contact downward along the cam curve 31 of the drive member 3 Since the operating member 4 is lowered while being driven, the spindle motor 1 is also lowered to adjust the focal length between the optical disc 50 and the pickup 60.

상술한 바와같이 본 발명은 광디스크의 기울어짐에 의한 초점 조절방법에서 광디스크의 상, 하 수직이동에 의한 초점 조절방법을 채택하므로서 기존의 방식에서 발생되는 트래킹 방향으로의 편차발생 및 광디스크의 픽업사이의 각도편차 발생을 해소할 수 있고, 부품수를 줄일수 있게 되므로서 조립의 효율성과 생산단자의 저렴화를 가져오며, 3점 지지방식에 의한 작동으로 2점힌지 고정방식에 비해 외부진동 및 충격에 대해서 보다 안정적인 이점이 있다.As described above, the present invention adopts the focus adjustment method by vertical and vertical movement of the optical disk in the focus adjustment method by tilting the optical disk, so that the deviation between the tracking direction and the pickup of the optical disk occurs in the conventional method. The angle deviation can be eliminated and the number of parts can be reduced, resulting in the efficiency of assembly and the reduction of the production terminal, and by the 3-point support method, the external vibration and impact compared to the 2-point hinge fixed method. There is a more stable advantage.

Claims

A motor 1 for generating a driving force, a guide member 2 which is fixedly coupled to the main base 600, and guides an actuator that is operated to vertically move the spindle motor 1, and the motor 1 And a driving member 3 inserted into the main base 600 and generating a driving force to move the motor 1 up and down vertically by electric movement by the cam driving, and cam driving of the driving member 3. The operating member 4 which is operated to move up and down vertically by the sliding contact transmission by the elastic member, and the elastic member 5 which is held in the operating member 4 so as to be in close contact with the sliding contact transmission of the operating member 4 accurately. Focus control device for a multi-optical disk player, characterized in that consisting of.

According to claim 1, wherein the guide member 2 is fixed to the main base 600, the fixing portion 20, the guide portion 21 for guiding the vertical operation of the operation member 4, and A focus adjustment apparatus for a multi-optical disc player, characterized in that a spring fixing portion (22) is provided to fix the elastic member (5) carried in the operating member (4).

According to claim 2, wherein the guide portion 21 is formed in the upper groove of the guide member 2 formed in the upper groove 210 is cut into a predetermined depth at the lower surface of the guide member 2 provided in the upper three directions Focus control device for a multi-optical disk player, characterized in that.

According to claim 1, wherein the drive member 3 is a gear unit 30 that is driven by a gear transmission having a driving force of the loading motor and the driving member 4 by the cam drive by the gear unit 30 Cam control unit 31 is characterized in that the sliding contact-driven cam curve portion is provided.

5. The apparatus as set forth in claim 4, wherein the cam curved portion (31) has one curved surface inclined to one side in the upper three directions of the driving member (3) at the same size and interval. .

2. The driving member (3) according to claim 1, wherein the operating member (4) is fixed to the spindle plate (1) by a fixed plate part (40) and the driving member (3) integrally with the fixed plate part (40) and driven by a loading motor. It is provided with an operating portion 41 which is operated vertically and vertically by the cam curved portion 31 of the sliding contact of the, and the accommodating portion 42 having a storage space so that the elastic member 5 can be carried inwardly. Features a focus control on a multi-optical disc player.

7. The guide member (21) of the guide member (2) according to claim 6, wherein the operating portion (4) has a certain height, and is integrally provided (410) with the operating rod (411) having a predetermined length and diameter in the center portion. Focusing apparatus for a multi-optical disk player, characterized in that provided in three directions corresponding to).