JPS595062U

JPS595062U - Disc cassette for recording and playback

Info

Publication number: JPS595062U
Application number: JP10004082U
Authority: JP
Inventors: 根本　常夫; 澤　哲雄
Original assignee: ソニー株式会社
Priority date: 1982-07-01
Filing date: 1982-07-01
Publication date: 1984-01-13
Also published as: JPS6316049Y2

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) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

図面は本考案を適用した記録再生用ディスクカセットの
実施例を示したものであって、第１図はカセット全体の
分解斜視図、第２区はカセットの組立て完了状態の斜視
図、第３Ａ図及び第３Ｂ図はシャッターによるカセット
筐体のヘッド挿入孔の開閉状態を説明する要部の上面図
、第４図は圧縮コイルスプリングの取付は状況を説明す
る要部の下面図、第５図は第４図の■−Ｖ線矢視図、第
６図はシャッターの係合片部分を示した切欠き斜視図、
第７Ａ図及び第７Ｂ図はシャッターの組立て状況を説明
する要部の下面図、第８Ａ図は第７Ａ図の■Ａ−■Ａ線
矢視ての拡大断面図、第８Ｂ図は第７Ｂ図の■Ｂ−■Ｂ
線矢視ての拡大断面図、第８Ｃ図はカセット筐体のシャ
ッターガイド溝に係合されるシャッターの突起の変形例
を説明する第８Ａ図と同様の断面図、第９Ａ図及び第９
Ｂ図はシャッターの開放位置でのロック構造の第１実施
例を説明する要部の斜視図、第１０Ａ図〜第１０Ｃ図は
その第１実施例によるシャッターのロック及びロック解
除動作を説明する要部の拡大断面図、第１１図は同上の
第２実施例を説明する要部の分解斜視図、第１２Ａ図及
び第１２Ｂ図はその第２実施例によるシャッターのロッ
ク解除動作を説明する要部の拡大断面図、第１３図は同
上め第２実施例の変形例を説明する要部の分解斜親図、
第１４Ａ９図及び第１４Ｂ図はその変形例によるシャッ
ターのロック解除動作を説明する要部の拡大断面図、第
１５Ａ図及び第１５Ｂ図は同上の第３実施例を説明する
要部の拡大断面図である。また図面に用いられた符号において、１・・・・・・・
・・カセット筐体、２・・・・・・・・・上ハーフ、３
・・・・・・・・・下ハーフ、４・・・・・・・・・デ
ィスク状記録媒体、８・・・・・・・・・ヘッド挿入孔
、１１・・・・・・・・・シャッター、１６・・・・・
・・・・圧縮コイルスプリング、２９・・・・・・・・
・係合部、３０・・・・・・・・・ロックＬ　　３１−
−−−−−−−−スリット、３７・・・・・・・・・突
起、３８・・・・・・・・・ロック爪規制用突起、であ
る。 □ □□＝２ａ−３：ｙｌ　　　　ノ１　　　′ ！　　　　　１　　　１　１１１１’ｌ−７／　　　　
　　ｎ　　　！２々　　　　ＩＩ　　− コ第１５図Ｊｒμ３The drawings show an embodiment of a recording/reproducing disk cassette to which the present invention is applied, in which Fig. 1 is an exploded perspective view of the entire cassette, Section 2 is a perspective view of the cassette in its assembled state, and Fig. 3A. 3B is a top view of the main part explaining the opening/closing state of the head insertion hole of the cassette housing by the shutter, FIG. 4 is a bottom view of the main part explaining the installation of the compression coil spring, and FIG. Fig. 4 is a view taken along the line ■-V; Fig. 6 is a cutaway perspective view showing the engagement piece of the shutter;
Figures 7A and 7B are bottom views of essential parts explaining the assembly status of the shutter, Figure 8A is an enlarged sectional view taken along the line ■A-■A in Figure 7A, and Figure 8B is Figure 7B. ■B-■B
FIG. 8C is an enlarged cross-sectional view as viewed from the line arrow; FIG. 8C is a cross-sectional view similar to FIG. 8A, and FIGS.
Figure B is a perspective view of the main parts of the first embodiment of the locking structure in the open position of the shutter, and Figures 10A to 10C are main parts illustrating the locking and unlocking operations of the shutter according to the first embodiment. FIG. 11 is an exploded perspective view of the main parts explaining the second embodiment of the same, and FIGS. 12A and 12B are the main parts explaining the unlocking operation of the shutter according to the second embodiment. , and FIG. 13 is an exploded perspective view of the main parts for explaining a modification of the second embodiment.
14A9 and 14B are enlarged sectional views of the main parts to explain the unlocking operation of the shutter according to the modified example, and FIGS. 15A and 15B are enlarged sectional views of the main parts to explain the third embodiment of the same. It is. Also, in the symbols used in the drawings, 1...
...Cassette case, 2...Top half, 3
......Lower half, 4...Disc-shaped recording medium, 8...Head insertion hole, 11...・Shutter, 16...
...Compression coil spring, 29...
・Engagement part, 30...Lock L 31-
----------Slit, 37...Protrusion, 38...Lock claw regulating protrusion. □ □□= 2a-3:yl ノ1'! 1 1 1111'l-7/
n! 2 I I - Figure 15 Jrμ3

Claims

[Scope of utility model registration request]

A cassette housing comprising an upper and a lower half and having a head insertion hole formed in at least one of the upper and lower halves, a disk-shaped recording medium rotatably housed in the cassette housing, and the cassette housing. A recording/reproducing disk cassette comprising a shutter movably attached to a body to open and close the head insertion hole, a spring for biasing the shutter to move from a position where the head insertion hole is opened to a position where it is closed; A retaining part provided on the shutter and a part of one of the upper and lower halves, the shutter being engaged with the engaging part when the shutter is moved to the open position. a locking pawl having elasticity and being provided on the other half of the upper and lower halves to prevent the locking pawl from bending toward the other half using its root side as a fulcrum; and a locking claw regulating protrusion that disengages the locking claw from the engaging portion by pressing a portion of the upper and lower halves in a direction toward each other against elasticity. The shutter is unlocked at the open position, and the shutter is moved to the closed position by the spring, and the locking pawl is engaged with the engaging portion, and the shutter is at the open position. In the locked state, when the shutter is forcibly moved toward the closed position and the lock claw is bent toward the other 71-f side using its root side as a fulcrum, the lock claw regulating A disc cassette for recording and reproduction, comprising a protrusion that is brought into relative contact with the lock pawl to prevent the lock pawl from deflecting.