JPS6283275U

JPS6283275U -

Info

Publication number: JPS6283275U
Application number: JP17580885U
Authority: JP
Priority date: 1985-11-15
Filing date: 1985-11-15
Publication date: 1987-05-27

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例を概略的に示す分解
斜視図、第２図は下シエルの内側を示す概略平面
図、第３図は下シエルの外側を示す概略平面図、
第４図は上シエルの内側を示す概略平面図、第５
図は第４図の―線断面図、第６図はシヤツタ
板の概略側面図、第７図はシヤツタ板の上シエル
側の面を示す概略平面図、第８図はシヤツタ板の
要部を示す一部切欠斜視図、第９図ないし第１１
図はシヤツタ板の開放動作を説明するための一部
切欠概略平面図、第１２図は記録装置等の回転駆
動部へのデイスクカセツトのセンターハブのチヤ
ツキング動作を示す概略断面図、第１３図は上シ
エルの内側中央部の突起部の他の例を示す要部断
面図である。２……上シエル、３……下シエル、４……デイ
スク状回転記録媒体、５……シヤツタ板、２３，
２３Ａ……突起部、２５，３５……開口窓部、３
３……スピンドル挿入孔、４２……ハブ。 FIG. 1 is an exploded perspective view schematically showing an embodiment of the present invention, FIG. 2 is a schematic plan view showing the inside of the lower shell, and FIG. 3 is a schematic plan view showing the outside of the lower shell.
Figure 4 is a schematic plan view showing the inside of the upper shell;
The figure is a cross-sectional view taken along the line -- in Figure 4, Figure 6 is a schematic side view of the shutter plate, Figure 7 is a schematic plan view showing the upper shell side of the shutter plate, and Figure 8 shows the main parts of the shutter plate. Partially cutaway perspective views shown in FIGS. 9 to 11
The figure is a partially cutaway schematic plan view for explaining the opening operation of the shutter plate, FIG. 12 is a schematic cross-sectional view showing the chucking operation of the center hub of the disk cassette to the rotation drive unit of a recording device, etc., and FIG. FIG. 7 is a sectional view of a main part showing another example of a protrusion at the inner center of the upper shell. 2... Upper shell, 3... Lower shell, 4... Disc-shaped rotating recording medium, 5... Shutter plate, 23,
23A... Protrusion, 25, 35... Opening window, 3
3...Spindle insertion hole, 42...Hub.

Claims

[Claims for Utility Model Registration] A thin rectangular upper shell and a lower shell, and a disc-shaped rotating recording medium, the disc-shaped rotating recording medium being rotatably housed between the upper shell and the lower shell. In the disk cassette, a spindle insertion hole is formed in the upper shell at a position corresponding to the center of the rotating recording medium, the upper shell is not provided with a spindle insertion hole, and the disk-shaped disk cassette inside the upper shell is provided with a spindle insertion hole. 1. A disk cassette characterized in that a protrusion is provided at a position corresponding to the center of the rotary recording medium for pressing a hub at the center of the disk-shaped rotary recording medium.