JPH0337683U

JPH0337683U -

Info

Publication number: JPH0337683U
Application number: JP9450389U
Authority: JP
Priority date: 1989-08-11
Filing date: 1989-08-11
Publication date: 1991-04-11

Description

[Brief explanation of drawings]

第１図〜第１０図は本考案の実施例を示すもの
であつて、第１図はテープカセツトの誤消去防止
機構部分の拡大断面図、第２図はテープカセツト
内部の第１図部分周辺の内部拡大平面図、第３図
はガイドの拡大断面図、第４図はスライド部材の
拡大斜視図、第５図は消去、記録、再生の可能な
状態を検出している検出機構の要部拡大断面図、
第６図は消去防止状態を検出している検出機構の
要部拡大断面図、第７図及び第８図は他の例を示
し、第７図はテープカセツトの誤消去防止機構部
分の消去、記録、再生の可能な状態の拡大正面図
、第８図は同じく消去防止状態の拡大正面図、第
９図及び第１０図は夫々更に他の例によるスライ
ド部材の拡大斜視図である。第１１図〜第１６図
は従来例を示すものであつて、第１１図は８ミリ
ビデオ用のテープカセツトの斜視図、第１２図は
同テープカセツトの一部断面平面図、第１３図は
同テープカセツトの右側面図、第１４図は同テー
プカセツトの誤消去防止機構周辺の内部拡大平面
図、第１５図は第１４図の−線断面図、
第１６図はＤＡＴ用のテープカセツトの裏面側の
斜視図である。なお、図面に示された符号において、１……本
体ケース、１ａ……上ハーフ、１ｂ……下ハーフ
、２……磁気テープ、４……底壁、６……上壁、
８Ａ，８Ｂ……ガイド、８Ａａ，８Ｂａ……環状
溝、１７……貫通孔、１９……スリツト、２０，
２０Ａ，２０Ｂ……スライド部材、２１，２１Ａ
，２１Ｂ……円柱体、２１ａ……環状突部、２１
Ａａ，２１Ｂａ……円弧状突部、２２……操作用
突部、２３……検出部、２６……検出用ピン、Ｒ
……赤色、Ｂ……青色、Ｋ……黒色、である。 1 to 10 show an embodiment of the present invention, in which FIG. 1 is an enlarged cross-sectional view of the accidental erasure prevention mechanism portion of the tape cassette, and FIG. 2 is the vicinity of the portion shown in FIG. 1 inside the tape cassette. Fig. 3 is an enlarged sectional view of the guide, Fig. 4 is an enlarged perspective view of the slide member, and Fig. 5 is the main part of the detection mechanism that detects the states in which erasing, recording, and reproduction are possible. Enlarged cross-sectional view,
FIG. 6 is an enlarged sectional view of the main part of the detection mechanism that detects the erasure prevention state, and FIGS. 7 and 8 show other examples. FIG. 8 is an enlarged front view of a state in which recording and reproduction are possible, FIG. 8 is an enlarged front view of a state in which erasure is prevented, and FIGS. 9 and 10 are enlarged perspective views of slide members according to still other examples. 11 to 16 show conventional examples, in which FIG. 11 is a perspective view of a tape cassette for 8 mm video, FIG. 12 is a partially sectional plan view of the same tape cassette, and FIG. A right side view of the tape cassette, FIG. 14 is an enlarged internal plan view of the area around the accidental erasure prevention mechanism of the tape cassette, and FIG. 15 is a cross-sectional view taken along the - line in FIG.
FIG. 16 is a perspective view of the back side of a tape cassette for DAT. In addition, in the symbols shown in the drawings, 1...Main case, 1a...Upper half, 1b...Lower half, 2...Magnetic tape, 4...Bottom wall, 6...Upper wall,
8A, 8B... Guide, 8Aa, 8Ba... Annular groove, 17... Through hole, 19... Slit, 20,
20A, 20B...Slide member, 21, 21A
, 21B... Cylindrical body, 21a... Annular protrusion, 21
Aa, 21Ba...Circular protrusion, 22...Operation protrusion, 23...Detection section, 26...Detection pin, R
...Red, B...Blue, K...Black.

Claims

[Scope of utility model registration request]

An element to be detected for cassette information is provided within the cassette body so as to be able to reciprocate in the thickness direction of the cassette body, and a through hole is provided in the bottom wall of the cassette body on an extension of the element to be detected in the direction of the reciprocating movement. is formed so that the cassette information is detected through the through hole based on the position of the detected element, and the operating section for causing the reciprocating movement is exposed on the side of the cassette main body. A tape cassette provided on the detected element.