KR980004451A

KR980004451A - Actuator for pickup of optical disc drive

Info

Publication number: KR980004451A
Application number: KR1019960021824A
Authority: KR
Inventors: 김기갑
Original assignee: 김광호; 삼성전자 주식회사
Priority date: 1996-06-17
Filing date: 1996-06-17
Publication date: 1998-03-30

Abstract

본 발명의 광디스크 드라이브의 픽업용 액츄에이터는 대물렌즈를 지지하기 위한 지지부재와, 상기 지지부재의 수평및 수직이동을 위한 자장을 형성하기 위한 포커싱 및 트랙킹 코일과, 상기 포커싱 및 트랙킹 코일에 의한 자장과 자기력 상호 작용을 위한 영구 자석을 구비하는 액츄에이터에 있어서, 상기 지지부재는 픽업의 주몸체를 겸용하며, 그 몸체의 둘레에는 지지부재의 수직이동을 위한 자장을 형성하기 위한 포커싱 코일이 감기고, 상기 포커싱 코일이 감긴 몸체의 일측면에는 지지부재의 수평이동을 위한 자장을 형성하기 위한 트랙킹 코일이 마련되어 있다.The pickup actuator of the optical disk drive of the present invention includes a support member for supporting an objective lens, a focusing and tracking coil for forming a magnetic field for horizontal and vertical movement of the support member, and a magnetic field by the focusing and tracking coil. In an actuator having a permanent magnet for magnetic force interaction, the support member serves as the main body of the pickup, and a focusing coil is wound around the body to form a magnetic field for vertical movement of the support member, and the focusing is performed. On one side of the coiled body is provided with a tracking coil for forming a magnetic field for the horizontal movement of the support member.

이와같은 본 발명에 의하면, 종래와는 달리 액츄에이터용 보빈을 별도로 사용하지 않으므로 픽업의 구조를 단순화할 수 있고, 그에 따라 제작비용을 절감할 수 있으며, 상호 반대방향으로 권선된 트랙킹 코일이 마련되므로, 트랙킹 서보 제어에 관여하는 자장의 크기를 증대시켜 한층 확실한 제어를 수행할 수 있다.According to the present invention as described above, since the bobbin for the actuator is not used separately, it is possible to simplify the structure of the pickup, thereby reducing the manufacturing cost, and is provided with a tracking coil wound in opposite directions, More reliable control can be performed by increasing the magnitude of the magnetic field involved in the tracking servo control.

Description

Actuator for pickup of optical disc drive

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제3도는 본 발명에 따른 광디스크 드라이브의 픽업용 액츄에이터의 코일 구조체와 요크가 분리된 상태에서의 사시도.3 is a perspective view in a state where the coil structure and the yoke of the pickup actuator of the optical disk drive according to the present invention are separated.

제4도는 제3도의 액츄에이터의 코일구조체와 요크가 결합된 상태에서의 단면도.4 is a cross-sectional view of the coil structure and the yoke of the actuator of FIG.

Claims

And a support member for supporting an objective lens, a focusing and tracking coil for forming a magnetic field for horizontal and vertical movement of the support member, and a permanent magnet for magnetic field interaction with the magnetic field by the focusing and tracking coil. In the actuator, the support member serves as the main body of the pickup, and a focusing coil is wound around the body to form a magnetic field for vertical movement of the support member, and the support member is wound on one side of the body on which the focusing coil is wound. And a tracking coil for forming a magnetic field for horizontal movement of the optical disk drive.

2. The actuator of claim 1, wherein the tracking coil comprises two winding coils and the coils are wound in opposite directions.

※ Note: The disclosure is based on the initial application.