JPH0310312U

JPH0310312U -

Info

Publication number: JPH0310312U
Application number: JP6929889U
Authority: JP
Priority date: 1989-06-14
Filing date: 1989-06-14
Publication date: 1991-01-31

Description

[Brief explanation of drawings]

第１図は本考案の一実施例を示す光ヘツド支持
機構の平面図、第２図は第１図における−線
拡大断面図、第３図は一方の送りシヤフト支持部
の斜視図、第４図は従来の光ヘツド送り機構を示
す斜視図、第５図は第４図における−線断面
図である。２１……取り付けベース、２３……送りシヤフ
ト、２４……光ヘツド、２５Ａ，２５Ｂ……シヤ
フト支持部、２６……軸受け部、２７……永久磁
石、２８……永久磁石、３０……コア、３１……
電磁コイル、３２……電磁石、３３……光ヘツド
位置固定機構、３４……軸、３５……アーム、３
５ａ……係止用突起、３５ｂ……被吸着部、３６
……ねじりばね、３８……溝（被係止部）。 Fig. 1 is a plan view of an optical head support mechanism showing an embodiment of the present invention, Fig. 2 is an enlarged sectional view taken along the line - - in Fig. 1, Fig. 3 is a perspective view of one of the feed shaft support parts, and Fig. This figure is a perspective view showing a conventional optical head feeding mechanism, and FIG. 5 is a sectional view taken along the line -- in FIG. 21... Mounting base, 23... Feeding shaft, 24... Optical head, 25A, 25B... Shaft support section, 26... Bearing section, 27... Permanent magnet, 28... Permanent magnet, 30... Core, 31...
Electromagnetic coil, 32... Electromagnet, 33... Optical head position fixing mechanism, 34... Axis, 35... Arm, 3
5a...Latching protrusion, 35b...Adsorbed part, 36
...Torsion spring, 38...Groove (locked part).

Claims

[Claims for Utility Model Registration] (1) In an optical head support mechanism that supports an optical head movably in the disk radial direction by a feeding shaft, a permanent magnet is provided in the supported portion of the optical head, and the permanent magnet is provided with a permanent magnet. An optical head support mechanism characterized in that magnets facing each other with magnetic poles that repel each other are provided in a shaft support part that supports an end of the feed shaft. (2) The optical head support mechanism according to claim 1, wherein the magnet of the shaft support portion is a permanent magnet. (3) The optical head support mechanism according to claim 1, wherein the magnet of the shaft support portion is an electromagnet. (4) An optical head position fixing mechanism is provided in the vicinity of the shaft support section provided with the electromagnet, which operates when the electromagnet's magnetic attraction force disappears when the electromagnet is powered off to fix the position of the optical head. The optical head support mechanism according to claim 3, characterized in that: (5) The optical head position fixing mechanism is rotatably attached to the shaft support part about an intermediate fulcrum, has a locking protrusion at the tip on the optical head side, and has the electromagnet at the opposite end. an arm having a suction target part that can be attracted to the optical head; a lock target part provided on the optical head side that the locking protrusion of the arm can lock; 5. The optical head support mechanism according to claim 4, further comprising a spring that engages with the side locked portion and biases in the rotational direction.