JPH046875U

JPH046875U -

Info

Publication number: JPH046875U
Application number: JP4718590U
Authority: JP
Priority date: 1990-05-02
Filing date: 1990-05-02
Publication date: 1992-01-22

Description

[Brief explanation of drawings]

第１図〜第８図は本考案の実施例を示すもので
あつて、第１図は被検出手段及びその周辺の拡大
平面図、第２図は同じく拡大底面図、第３図は第
１図の−線断面図、第４図は下ハーフの拡大
部分平面図、第５図は下ハーフの拡大平面図、第
６図は下ハーフ成形用金型の拡大部分断面図、第
７図及び第８図はカセツト情報検出機構の要部拡
大断面図である。第９図〜第１２図は従来例を示
すものであつて、第９図は８ミリビデオ用のテー
プカセツトの斜視図、第１０図は同テープカセツ
トの一部断面平面図、第１１図は下ハーフの拡大
部分平面図、第１２図は第１１図の−線
拡大断面図である。なお、図面に示された符号において、１……カ
セツト本体、１ａ……上ハーフ、１ｂ……下ハー
フ、２……磁気テープ、４……下ハーフの底壁、
２３……検出部、２６……検出用ピン、３０，３
０Ａ，３０Ｂ，３０Ｃ，３０Ｄ，３０Ｅ……被検
出手段、３１……接続部、３２……切欠き形成用
の溝、３３……スリツト、３４……貫通孔、であ
る。 1 to 8 show an embodiment of the present invention, in which FIG. 1 is an enlarged plan view of the detection means and its surroundings, FIG. 2 is an enlarged bottom view, and FIG. 4 is an enlarged partial plan view of the lower half, FIG. 5 is an enlarged plan view of the lower half, FIG. 6 is an enlarged partial sectional view of the mold for forming the lower half, FIG. FIG. 8 is an enlarged sectional view of the main part of the cassette information detection mechanism. 9 to 12 show conventional examples, in which FIG. 9 is a perspective view of a tape cassette for 8 mm video, FIG. 10 is a partially sectional plan view of the same tape cassette, and FIG. FIG. 12 is an enlarged partial plan view of the lower half, and FIG. 12 is an enlarged cross-sectional view taken along the - line in FIG. 11. In addition, in the symbols shown in the drawings, 1...cassette main body, 1a...upper half, 1b...lower half, 2...magnetic tape, 4...bottom wall of lower half,
23...detection section, 26...detection pin, 30,3
0A, 30B, 30C, 30D, 30E...detection means, 31...connecting portion, 32...groove for notch formation, 33...slit, 34...through hole.

Claims

[Scope of utility model registration request]

A means to be detected for detecting cassette information is provided in the cassette body, and the means to be detected forms a through hole opening in the surface of the cassette body;
The detection means and the cassette main body are connected to each other by a connecting part, and the detecting means is connected to the connecting part from the inner surface of the cassette main body. A tape cassette in which a notch is formed that causes stress concentration sufficient to break the connection portion under such a load.