JPH0280378U

JPH0280378U -

Info

Publication number: JPH0280378U
Application number: JP15888588U
Authority: JP
Priority date: 1988-12-05
Filing date: 1988-12-05
Publication date: 1990-06-20
Anticipated expiration: 2003-12-05
Also published as: JPH0722778Y2

Description

[Brief explanation of the drawing]

第１図〜第１０図は実施例を示すものであつて
、第１図はカセツト本体上ハーフの内面を示す斜
視図、第２図は本体下ハーフの内面を示す斜視図
、第３図は上ハーフと下ハーフとを接合した状態
を示す―線矢視断面図、第４図は本体上ハー
フの内面を示す平面図、第５図は本体下ハーフの
内面を示す平面図、第６図は上ハーフと下ハーフ
とを接合した状態を示す背面図、第７図は他のテ
ープカセツトを示す背面図、第８図は同じく他の
テープカセツトを示す一部断面図、第９図はベー
タ方式によるテープカセツトの本体上ハーフ内面
を示す平面図、第１０図は同じく本体下ハーフの
内面を示す平面図、である。第１１図〜第１４図
は従来例を示すものであつて、第１１図はＶＨＳ
方式のテープカセツトの平面図、第１２図は第１
１図の―線矢視断面図、第１３図はテー
プカセツト本体上ハーフの内面を示す斜視図、第
１４図は成形時に生ずる「ヒケ」を説明するため
にフエンス部の周辺を示した断面図である。なお、図面に示す符号において、１６……ヒケ
、２１，２２，３１，３２……周壁、２３Ａ，２
３Ｂ，２３Ｃ，２３Ｄ，２３Ｅ，２３Ｆ，３３Ａ
，３３Ｂ，３３Ｃ，３３Ｅ，３３Ｆ，３３Ｇ，５
３，６３Ａ，６３Ｂ……フエンス部、３３ａ……
フエンス部上端面、３４，４４，５４……下ハー
フ、３６，４６，５６……上ハーフ、３６ａ，５
６ａ……フエンス部対向領域、３８……位置ズレ
部分、４６ａ……小突起、である。 Figures 1 to 10 show examples, in which Figure 1 is a perspective view showing the inner surface of the upper half of the cassette main body, Figure 2 is a perspective view showing the inner surface of the lower half of the main body, and Figure 3 is a perspective view showing the inner surface of the lower half of the main body. Fig. 4 is a plan view showing the inner surface of the upper half of the main body; Fig. 5 is a plan view showing the inner surface of the lower half of the main body; Fig. 6 7 is a rear view showing another tape cassette, FIG. 8 is a partial sectional view showing another tape cassette, and FIG. 9 is a beta cassette. FIG. 10 is a plan view showing the inner surface of the upper half of the tape cassette according to this method, and FIG. 10 is a plan view showing the inner surface of the lower half of the main body. 11 to 14 show conventional examples, and FIG. 11 shows a VHS
Figure 12 is a plan view of the tape cassette of the method.
1 is a cross-sectional view taken along the line arrow 1, FIG. 13 is a perspective view showing the inner surface of the upper half of the tape cassette main body, and FIG. 14 is a sectional view showing the periphery of the fence portion to explain the "sink mark" that occurs during molding. It is. In addition, in the symbols shown in the drawings, 16...sink mark, 21, 22, 31, 32... peripheral wall, 23A, 2
3B, 23C, 23D, 23E, 23F, 33A
, 33B, 33C, 33E, 33F, 33G, 5
3,63A,63B...Fence part, 33a...
Upper end surface of fence portion, 34, 44, 54... lower half, 36, 46, 56... upper half, 36a, 5
6a...Fence portion opposing area, 38...Displacement portion, 46a...Small protrusion.

Claims

[Scope of utility model registration request]

A fence portion is provided on the inner surface of at least the lower half of the main body around the tape reel, and the wall thickness of the upper half of the main body in at least a part of the opposing region of the upper half of the main body that faces the fence portion of the lower half of the main body. The thickness of the tape cassette is equal to or less than the original thickness of the upper half of the main body in areas other than the opposing area.