JPS62202687U

JPS62202687U -

Info

Publication number: JPS62202687U
Application number: JP8854186U
Authority: JP
Priority date: 1986-06-12
Filing date: 1986-06-12
Publication date: 1987-12-24
Anticipated expiration: 2001-06-12
Also published as: JPH0722791Y2

Description

[Brief explanation of the drawing]

第１図は本考案の実施例の底面側から見た全体
の斜視図、第２図は誤消去防止機構の一部の平面
図であつて、検出用孔の閉状態図、第３図は一部
を切欠した一部切断背面図、第４図は第３図
線の底面図、第５図は第３図線の拡大切断平
面図、第６図は誤消去防止片の斜視図、第７図は
一操作状態下の従来例の背面図である。１……カセツトケース、２……誤消去防止検出
用孔、３……誤消去防止片、４……凸部、５，６
，５_１，６_１……凹部、θ_１，θ_２……傾斜角。 Fig. 1 is a perspective view of the entire embodiment of the present invention as seen from the bottom side, Fig. 2 is a plan view of a part of the accidental erasure prevention mechanism, with the detection hole in a closed state, and Fig. 3 4 is a bottom view along the line in Figure 3, Figure 5 is an enlarged cutaway plan view along the line in Figure 3, and Figure 6 is a perspective view of the accidental erasure prevention piece. FIG. 7 is a rear view of the conventional example under one operating state. 1... Cassette case, 2... Erroneous erasure prevention detection hole, 3... Erroneous erasure prevention piece, 4... Protrusion, 5, 6
, 5 ₁ , 6 ₁ ... concavity, θ ₁ , θ ₂ ... inclination angle.

Claims

[Scope of claims for utility model registration] (1) Upper and lower cases with magnetic tape inside 1 ₁ , 1 In the magnetic tape cassette, the cassette case ₁ is provided with a cassette case 1 having an erroneous erasure prevention detection hole 2, and an erroneous erasure prevention piece 3 for opening and closing the erroneous erasure prevention detection hole 2. A plurality of protrusions 4, ₄₁ are provided on the erroneous erasure prevention piece 3 in order to lock the erroneous erasure prevention piece 3, and a plurality of recesses 5, _{6, 5} are respectively engaged with these protrusions 4, 41. ₁ ,
A magnetic tape cassette characterized in that a magnetic tape cassette ₆₁ is provided on the inner wall of the upper case ₁₁ and the lower case ₁₂ . (2) The accidental erasure prevention piece 3 has two convex portions 4 and 4 that can fit into the concave portions 5 ₁ and 6 ₁ on the rear side wall of the lower case and the concave portions 5 and 6 on the inner flat wall of the upper case, respectively.
1. A magnetic tape cassette according to claim ₁ , which corresponds to claim 1. (3) The accidental erasure prevention piece 3 has two protrusions 4, 4. Claim 2 of the Utility Model Registration Claim _{: 1} , wherein the convex portions 4, ₄₁ are vertically separated and protrude outward via arms _34, respectively. magnetic tape cassette. (4) Utility model registration claim 2 or 3, wherein the recesses ₅ , 6, 51, ₆₁ are grooves of the same shape arranged in the same direction in the sliding direction of the protrusion 4. The magnetic tape cassette according to item 3.