JPS6218881U

JPS6218881U -

Info

Publication number: JPS6218881U
Application number: JP10800485U
Authority: JP
Priority date: 1985-07-15
Filing date: 1985-07-15
Publication date: 1987-02-04
Also published as: JPH0416306Y2

Description

[Brief explanation of the drawing]

第１図〜第４図は本考案をビデオテープレコー
ダ用のテープカセツトに適用した一実施例を示す
ものであつて、第１図は要部の斜視図、第２図は
要部の底面図、第３図は第２図―線断面図、
第４図は第２図―線断面図である。第５図〜
第８図はビデオテープレコーダ用のテープカセツ
トの従来例を示すものであつて、第５図はテープ
カセツトの底面図、第６図は要部の底面図、第７
図は検出孔の開閉状況を説明する要部の縦断面図
、第８図はプラグの突部がガイド溝の底面から下
方に突出した状態の要部の縦断面図である。なお図面に用いた符号において、１……カセツ
ト筐体、１ａ……底面、１０……ガイド溝、１０
ａ……底面、１６……検出孔、１７……位置決め
孔、１８……プラグ、１８ｂ……下端、２４……
突部、２５……圧縮コイルばね、２８……検出ピ
ン、３１……傾斜面、３２……突起、である。 Figures 1 to 4 show an embodiment in which the present invention is applied to a tape cassette for a video tape recorder, in which Figure 1 is a perspective view of the main part, and Figure 2 is a bottom view of the main part. , Figure 3 is a sectional view taken along the line of Figure 2,
FIG. 4 is a sectional view taken along the line of FIG. 2. Figure 5~
Fig. 8 shows a conventional example of a tape cassette for a video tape recorder, Fig. 5 is a bottom view of the tape cassette, Fig. 6 is a bottom view of the main parts, and Fig. 7 is a bottom view of the tape cassette.
The figure is a longitudinal sectional view of the main part for explaining the opening/closing state of the detection hole, and FIG. 8 is a longitudinal sectional view of the main part in a state where the protrusion of the plug projects downward from the bottom surface of the guide groove. In addition, in the symbols used in the drawings, 1...cassette housing, 1a...bottom surface, 10...guide groove, 10
a...Bottom surface, 16...Detection hole, 17...Positioning hole, 18...Plug, 18b...Lower end, 24...
Projection, 25...compression coil spring, 28...detection pin, 31...inclined surface, 32...protrusion.

補正昭６１．４．２４図面の簡単な説明を次のように補正する。明細書第１９頁第９行目の「の従来例」を「に
おいて本考案者が先に検討した参考例」と補正し
ます。Amendment April 24, 1981 The brief description of the drawing is amended as follows. In the 9th line of page 19 of the specification, "prior art example" is amended to read "reference example previously considered by the inventor".

Claims

[Scope of Claim for Utility Model Registration] A guide groove is provided on the bottom of the cassette housing, and a detection hole and a positioning hole for detecting cassette information are provided on the bottom of the guide groove. A plug configured to be rotatable around the detection hole and the positioning hole is provided at an intermediate position between the detection hole and the positioning hole, and a protrusion projecting to one side is provided at the lower end of the plug to press and bias the plug upward. a spring is provided, and a protrusion of the plug is configured to fit into the detection hole from below so that the protrusion closes the detection hole, and in this state, the plug is pushed against the spring. After moving the plug downward to push out the protrusion from the detection hole into the guide groove, the plug is rotated around the vertical axis to rotate the protrusion within the guide groove to determine the position. In the tape cassette configured to open the detection hole by fitting into the hole from below, an inclined surface is provided on the bottom surface of the guide groove from the detection hole to the positioning hole, and this inclined surface The protrusion of the plug has an inclined surface that gradually rises from the detection hole to the positioning hole within the rotation locus of the protrusion of the plug, and from the detection hole to the guide groove against the spring. It is characterized in that the extruded protrusion is rotated while sliding on the slope by the cooperative action of the spring and the guide by the slope, and introduced into the positioning hole. tape cassette.