KR900000029Y1 - Tracking apparatus for compact disc player - Google Patents
Tracking apparatus for compact disc player Download PDFInfo
- Publication number
- KR900000029Y1 KR900000029Y1 KR2019860004203U KR860004203U KR900000029Y1 KR 900000029 Y1 KR900000029 Y1 KR 900000029Y1 KR 2019860004203 U KR2019860004203 U KR 2019860004203U KR 860004203 U KR860004203 U KR 860004203U KR 900000029 Y1 KR900000029 Y1 KR 900000029Y1
- Authority
- KR
- South Korea
- Prior art keywords
- tracking
- magnetic field
- field forming
- compact disc
- attached
- Prior art date
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Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
- G11B5/58—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B5/596—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on disks
- G11B5/59605—Circuits
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
- G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
- G11B15/1808—Driving of both record carrier and head
- G11B15/1825—Driving of both record carrier and head driving or moving the head in a direction which cuts across the direction of travel of the tape, e.g. for helicoïdal scanning
Landscapes
- Optical Recording Or Reproduction (AREA)
Abstract
내용 없음.No content.
Description
제1도는 종래 트랙킹장치의 구성을 보인 횡단면도.1 is a cross-sectional view showing the configuration of a conventional tracking device.
제2도는 본 고안 트랙킹장치의 구성을 보인 사시도.Figure 2 is a perspective view showing the configuration of the tracking device of the present invention.
제3도는 본 고안 트랙킹 장치의 구성을 보인 횡단면도.Figure 3 is a cross-sectional view showing the configuration of the tracking device of the present invention.
제4도 (a)(b)는 종래 기술과 본 고안 트랙킹 장치의 트랙킹시 디스크 트랙과 촛점과의 궤적도Figure 4 (a) (b) is a trajectory of the disk track and focus during tracking of the tracking device of the prior art and the present invention
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
1 : 픽업 베이스부 3, 3' : 브래키트1: Pickup base 3, 3 ': Bracket
4 : 판스프링 5 : 고무판4: leaf spring 5: rubber plate
6, 6' : 복합층 지지물 7 : 슬라이딩 베어링6, 6 ': composite layer support 7: sliding bearing
8 : 트랙킹 코일 9 : 트랙킹 암8: tracking coil 9: tracking arm
9a : 삽입공 10 : 자석고정 브래키트9a: insertion hole 10: magnet fixing bracket
12 : 자계형성 요크 12a : 돌기부12: magnetic field forming yoke 12a: protrusion
13 : 자석 14 : 플레이트13: magnet 14: plate
본 고안은 컴팩트 디스크 플레이어나 비디오 디스크 플레이어에 사용되는 광픽업의 트랙킹 구동장치에 관한 것으로, 특히 충실한 신호를 얻을 수 있는 광픽업에 적당하도록 한 트랙킹 장치에 관한 것이다.The present invention relates to a tracking drive device for an optical pickup used in a compact disc player or a video disk player, and more particularly to a tracking device suitable for an optical pickup capable of obtaining a faithful signal.
종래의 트랙킹 장치는 제1도에 도시한 바와같이, 판스프링 붙임판(21)의 양측에 각각 부착된 판스프링(22) (22')의 선단부에는 자석 붙임판(23) (23') 이 고정되어 그 자석 붙임판(23) (23')에 트랙킹용 자석(24)이 부착되어 자계를 형성하고 있고 또 판스프링 붙임판(21)의 상, 하면에 각각 부착된 판스프링(25)의 선단간에는 슬라이딩 베어링(26)이 상, 하로 부착 지지되어 있으며, 슬라이딩 베어링(26)의 양측에는 트랙킹암(27)이 부착되어 자계속에 들어가 있고 그 트랙킹암(27)에는 트랙킹코일(28)이 감기어 있는 구조로 되어 있으며 이러한 트랙킹장치의 트랙킹 코일(28)에 전류를 흘리면 플레밍 왼손법칙에 따라 좌, 우방향의 힘이 형성되어 이힘에 의하여 판스프링(22)(22')들이 변형되면서 원형으로 트랙킹하게 된다.In the conventional tracking device, as shown in FIG. 1, the magnet mounting plates 23 and 23 'are fixed to the front ends of the leaf springs 22 and 22' respectively attached to both sides of the leaf spring mounting plate 21. A tracking magnet 24 is attached to the magnet mounting plates 23 and 23 'to form a magnetic field, and a sliding bearing between the front ends of the leaf springs 25 attached to the upper and lower surfaces of the leaf spring mounting plate 21, respectively. (26) is supported to be attached up and down, the tracking arm (27) is attached to both sides of the sliding bearing 26 to enter the self-contained structure, the tracking arm (28) is wound around the tracking arm (27) When a current flows through the tracking coil 28 of the tracking device, a force in the left and right directions is formed according to the Fleming's left hand law, and the leaf springs 22 and 22 'are deformed by this force, thereby tracking in a circular shape. .
그러나, 이러한 종래 트랙킹 장치는 제4도의 (a)에 도시한 바와같이 트랙킹시에 디스크의 트랙(28)과 촛점(30)이 이루는 각도가 트랙킹이 계속됨에 따라 변하게 되어 트랙킹 신호가 양호하지 못하여 트랙킹 유효범위가 매우 좁으며 판스프링(22) (22') (25)들이 서로 연결되어 있으므로 인하여 포커싱과 트랙킹 사이의 간섭현상으로 신호가 불안정해지는 결함이 있었다.However, in the conventional tracking device, as shown in FIG. 4A, the angle formed by the track 28 and the focus 30 of the disc is changed as tracking continues, so that the tracking signal is not good. Since the effective range is very narrow and the leaf springs 22, 22 'and 25 are connected to each other, there is a defect that the signal becomes unstable due to the interference between focusing and tracking.
본 고안은 이러한 종래의 결함을 해소하기 위하여 안출한 것으로, 베어링 지지용 판스프링의 양측면에 고무판을 부착시킨 복합층 지지물을 이용하여 디스크의 트랙과 촛점이 일정각도로 유지되게 하고 트랙킹의 포커싱에 대한 간섭현상이 배제되게한 트랙킹장치를 형성한 것인 바, 이를 첨부된 도면에 의하여 상세히 설명하면 다음과 같다.The present invention has been devised to solve such a conventional defect, and it is possible to maintain the track and focus of the disc at a constant angle by using a multi-layer support having rubber plates attached to both sides of the bearing spring plate spring, and to focus the tracking of the tracking. The tracking device is formed to exclude the interference phenomenon, it will be described in detail by the accompanying drawings as follows.
제2도 내지 제3도 (a)에 도시한 바와같이, 픽업 베이스부(1)에 고정나사(2)로 브래키트(3)(3')를 입설하여그 브래키트(3)(3')들의 서로 대향된 내면에는 베어링 지지용 판스프링(4)의 양측면에 고무판(5)을 부착시켜 형성한 복합층 지지물(6)(6')의 일단을 정착 고정시키고 각 복합층 지지뭍(6)(6')의 내측단에는 슬라이딩 베어링(7)의 외주면 양측을 접착함과 동시에, 그 슬라이딩 베어링(7)의 일측에는 트랙킹 코일(8)이 외주면에 감긴 트랙킹암(9)을 형성하는 한편, 픽업 베이스부(1)에 자석고정 브래키트(10)를 고정나사(11)로 고정하여 그 브래키트(10)의 중앙에 고정한 자계형성 요크(12)의 중앙돌기부(12a)가 상기 트랙킹암(9)의 삽입공(9a)내에 위치하게 하고 자계형성 요크(12)의 내측에 트랙킹용 자석(13)과 자계형성 플레이트(14)을 차례로 압입 고정하여 트랙킹암(9)에 감긴 코일(8)이 자계형성 요크(12)와 자계형성 플레이트(14)사이에 위치되게 한것이다.As shown in Figs. 2 to 3 (a), a bracket 3, 3 'is inserted into the pickup base 1 with a fixing screw 2, and the bracket 3, 3' is inserted therein. On each of the inner surfaces of the bearings), one end of the composite layer supports 6 and 6 'formed by attaching rubber plates 5 to both sides of the bearing support leaf spring 4 is fixed and fixed. 6 ', the outer peripheral surface of the sliding bearing 7 is bonded to both ends, and at one side of the sliding bearing 7, the tracking coil 8 is formed with a tracking arm 9 wound around the outer peripheral surface. The center projection 12a of the magnetic field forming yoke 12 fixed to the center of the bracket 10 by fixing the magnet fixing bracket 10 to the pickup base 1 with the fixing screw 11 is provided with the tracking arm. The tracking magnet 13 and the magnetic field-forming plate 14 are sequentially press-fitted in the insertion hole 9a of the magnetic field-forming yoke 12 to the tracking arm 9. The hangeotyi long coils 8 are to be positioned between the magnetic field formed in the yoke 12 and the magnetic field formed in the plate 14.
이와같이 된 본 고안은 트랙킹 코일(8)에 전류가 흐르게 하면 플레밍 왼손법칙에 따라 제3도에 도시한 화살표와 같이 좌, 우방향의 힘이 발생하여 복합층 지지물(6)(6')에 고정된 슬라이딩 베어링(7)에 힘이 가해져 좌, 우방향의 변위가 생겨 트랙킹이 행하여지고 트랙킹 코일(8)에 전류가 끊어지면 복합층 지지물(6)(6')의 복원력에 의하여 원래상태로 복원되며 이때에는 고무판(5)에 의한 댐핑효과로 신속히 안정된 상태로 복원된다.According to the present invention, when the current flows in the tracking coil 8, the left and right forces are generated as shown by the arrow shown in FIG. 3 according to the Fleming's left hand law, and fixed to the composite layer support 6 (6 '). When a force is applied to the sliding bearings 7 which are displaced in the left and right directions, and tracking is performed, and current is cut off from the tracking coil 8, the original bearing is restored to the original state by the restoring force of the composite layer supports 6 and 6 '. At this time, it is quickly restored to a stable state by the damping effect by the rubber plate (5).
그리고 복원후 다시 트랙킹을 하게되며 이와같은 동작이 반복되어 트랙킹이 행하여진다.After the restoration, tracking is performed again, and the above operation is repeated to perform tracking.
이와같이된 본 고안 트랙킹장치는 브래키트(3)(3')에 접착 고정시킨 복합층 지지물(6)(6')에 슬라이딩 베어링(7)을 고정하고 그 슬라이딩 베어링(7)의 일측에 트랙킹암(9)을 고정하여 그 트랙킹암(9)에 감긴 코일(8)이 자계형성 요크(12)와 자계 형성 플레이트(14) 사이에 위치되게 한 구성에 의하여 트랙킹시에 제4도의 (b)에 도시한 바와같이 디스크의 트랙(15)과 촛점(16)이 일정각도로 유지되므로 신호가 충실하게 되며, 트랙킹의 포커싱에 대한 간섭현상이 배제됨으로써 보다 충실한 신호를 얻을 수 있게 된다.The tracking device of the present invention thus secures the sliding bearings 7 to the composite layer supports 6 and 6 'which are adhesively fixed to the brackets 3 and 3' and the tracking arms on one side of the sliding bearings 7. (B) in FIG. 4 at the time of tracking by the configuration in which the coil 8 wound around the tracking arm 9 is fixed between the magnetic field forming yoke 12 and the magnetic field forming plate 14. As shown in the figure, the track 15 and the focus 16 of the disc are maintained at a constant angle so that the signal is faithful, and the faithful signal can be obtained by eliminating the interference phenomenon of the focusing of the tracking.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019860004203U KR900000029Y1 (en) | 1986-04-02 | 1986-04-02 | Tracking apparatus for compact disc player |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019860004203U KR900000029Y1 (en) | 1986-04-02 | 1986-04-02 | Tracking apparatus for compact disc player |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR870017165U KR870017165U (en) | 1987-11-30 |
| KR900000029Y1 true KR900000029Y1 (en) | 1990-01-30 |
Family
ID=19250184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019860004203U KR900000029Y1 (en) | 1986-04-02 | 1986-04-02 | Tracking apparatus for compact disc player |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR900000029Y1 (en) |
-
1986
- 1986-04-02 KR KR2019860004203U patent/KR900000029Y1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR870017165U (en) | 1987-11-30 |
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