JPS58190806U

JPS58190806U - Recording disk positioning device

Info

Publication number: JPS58190806U
Application number: JP8588482U
Authority: JP
Inventors: 伊代野　栄一
Original assignee: 株式会社東芝
Priority date: 1982-06-09
Filing date: 1982-06-09
Publication date: 1983-12-19

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図〜第３図はビデオディスクをターンテーブルに載
置したりターンテーブルから離間する為の装置の一例の
動作を説明する為の側断面図、第４図は第１図〜第３図
に示す装置に用いられる昇降装置の機構部分の従来構成
を原理的に示す図、第５図は同じく回路部分の従来構成
を示す回路図、第６図はこの考案に係る記録円盤位置決
め装置の一実施例の要部の機構部分を示す図、第７図は
同じく回路部分を示す回路図である。１９・・・ターンテーブル、２３・・・モータ、２４・
・・プーリ、２５・・・ベルト、２６・・・プーリ、３
２・・・再生開始スイッチ、３３・・・再生終了スイッ
チ、４１・・・カム、４１１・・・第１のカム面、４１
２・・・第２のカム面、４２・・・マイクロスイッチ、
４２１・・・可動接点、４３．４４・・・フリップフロ
ップ回路、４５・・・アンド回路、Ｑ□１・・・駆動ト
ランジスタ、Ｄ１２・・・上昇位置表示用ダイオード、
Ｄ□４・・・下降位置表示用ダイオード、Ｒ２１，Ｒ２
２・・・抵抗。第５図1 to 3 are side sectional views for explaining the operation of an example of a device for placing a video disc on a turntable and separating it from the turntable, and FIG. FIG. 5 is a circuit diagram showing the conventional structure of the circuit section, and FIG. 6 is a diagram showing a conventional structure of the mechanism of the lifting device used in the device shown in FIG. FIG. 7 is a diagram showing the main mechanical parts of the embodiment, and FIG. 7 is a circuit diagram showing the circuit parts. 19... Turntable, 23... Motor, 24...
...Pulley, 25...Belt, 26...Pulley, 3
2... Playback start switch, 33... Playback end switch, 41... Cam, 411... First cam surface, 41
2... Second cam surface, 42... Micro switch,
421... Movable contact, 43.44... Flip-flop circuit, 45... AND circuit, Q□1... Drive transistor, D12... Diode for rising position display,
D□4...Descent position display diode, R21, R2
2...Resistance. Figure 5

Claims

[Scope of Claim for Utility Model Registration] Recording disc positioning means for placing the recording disc on the turntable and separating it from the turntable, a motor for driving the recording disc positioning means, and a motor for driving the recording disc positioning means; Two different cam surfaces are continuously formed for approximately half a circumference, and the recording disk positioning means performs two operations: placing the recording disk on the turntable and separating it from the turntable. a cam that rotates once in between, and a cam that is disposed on the outer peripheral side of the two cam surfaces and rotates the two cams each time the operation of placing the recording disk on the turntable and the operation of separating it from the turntable are respectively completed. A recording disk positioning device comprising a switch means whose switching state is changed by passing a boundary between surfaces, and a motor drive circuit which stops the rotation of the motor each time the operation of the switch means is switched. −