JPH0467242U

JPH0467242U -

Info

Publication number: JPH0467242U
Application number: JP10798690U
Authority: JP
Priority date: 1990-10-17
Filing date: 1990-10-17
Publication date: 1992-06-15

Description

[Brief explanation of the drawing]

第１は本考案の一実施例を示すヘツド駆動機構
の斜視図、第２図は第１図における−線に沿
つた断面図、第３図は第１図における矢印方向
の正面図、第４図は第２図の部の正面図である
。１……ヘツド搭載機構部、２……光学ヘツド、
３……第一のレール、４……第一の軸受（すべり
軸受）、５……スラストボールベアリング又はラ
ジアルボールベアリング、６……第二のレール、
７……第二の軸受（ころがり軸受）、８……リニ
アモートル、９……移動コイル、１０……軸受ホ
ルダ、１１……コイル、１２……固定磁石、１３
……鉄板、１４……枠。 1 is a perspective view of a head drive mechanism showing an embodiment of the present invention, 2 is a sectional view taken along the line - in FIG. 1, 3 is a front view in the direction of the arrow in FIG. The figure is a front view of the section shown in FIG. 2. 1... Head mounting mechanism section, 2... Optical head,
3... First rail, 4... First bearing (slide bearing), 5... Thrust ball bearing or radial ball bearing, 6... Second rail,
7... Second bearing (rolling bearing), 8... Linear motor, 9... Moving coil, 10... Bearing holder, 11... Coil, 12... Fixed magnet, 13
...Iron plate, 14...frame.

Claims

[Scope of Claim for Utility Model Registration] A first bearing at one end of a mechanism section on which an optical head is mounted is fitted as a sliding bearing to a first fixed rail to be slidably supported, and a second bearing at the other end is slidably supported. The bearing is movably supported as a rolling bearing on a second fixed rail located parallel to the first fixed rail, and the mechanism section is moved between the first and second fixed rails by a driving means. By moving the optical head mounted on the mechanism section, the optical head is movably engaged with rod-shaped fixed magnets fixedly arranged along the first and second fixed rails. The moving speed of the optical head mounted on the mechanism is determined by the electric current induced in the coil when the combined coil is attached to the mechanism and the mechanism moves along the first and second fixed rails. In a head drive mechanism whose position is known, means for exerting a repulsive force or an attractive force between a coil attached to the mechanism part and the rod-shaped fixed magnet in a direction that matches the gravity of the mechanism part;
and/or a first bearing is provided with play in a direction perpendicular to the axial direction of the first fixed rail, and a rolling bearing with a V-shaped groove provided in the mechanism section is attached to the first fixed rail through a spring material. 1. An optical head drive device comprising means for abutting and sliding on a fixed rail.