JPS62202686U

JPS62202686U -

Info

Publication number: JPS62202686U
Application number: JP8854086U
Authority: JP
Priority date: 1986-06-12
Filing date: 1986-06-12
Publication date: 1987-12-24

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
であつて、第２図Ａは検出用孔の閉状態図、第２
図Ｂは検出用孔の開状態図、第３図は第２図Ａの
状態の背面図、第４図は一部の拡大切断平面図、
第５図は誤消去防止片の斜視図、第６図は第４図
と同様な位置の従来例の切断平面図である。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
……凹部、５_１，６_１……摺動用斜面、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, and FIG. 2A is a diagram of the detection hole in a closed state; Second
Figure B is an open state diagram of the detection hole, Figure 3 is a rear view of the state in Figure 2 A, Figure 4 is a partially enlarged cutaway plan view,
FIG. 5 is a perspective view of the erroneous erasure prevention piece, and FIG. 6 is a cutaway plan view of the conventional example in the same position as FIG. 4. 1... Cassette case, 2... Erroneous erasure prevention detection hole, 3... Erroneous erasure prevention piece, 4... Protrusion, 5, 6
...Concavity, 5 ₁ , 6 ₁ ... Sliding slope, θ ₁ , θ
₂ ...Inclination angle.

Claims

[Scope of claims for utility model registration] (1) Cassette case 1 in which magnetic tape is installed
is provided with 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, and a locking protrusion 4 provided on the erroneous erasure prevention piece 3 is attached to the cassette case. In the magnetic tape cassette which is removably fitted into the recesses 5 and 6 for opening and closing the erroneous erasure prevention piece 1, when the erroneous erasure prevention piece 3 opens and closes the erroneous erasure prevention detection hole 2, the protrusion 4 A magnetic tape cassette characterized in that the sliding slopes 5 ₁ , 6 ₁ of the recesses 5 , 6 that are engaged with each other have different inclination angles. (2) Utility model registration claim 1 in which the inclination angles θ ₁ and θ ₂ of the sliding slopes 5 ₁ and 6 ₁ of the recesses 5 and ₆ are smaller than the inclination angle θ ₂
The magnetic tape cassette described in Section 1. (3) The magnetic tape according to claim 1 or 2, wherein the recesses 5 and 6 are grooves of the same shape arranged in the same direction in the sliding direction of the projection 4. Cassette.