JPS6372785U

JPS6372785U -

Info

Publication number: JPS6372785U
Application number: JP16350486U
Authority: JP
Priority date: 1986-10-27
Filing date: 1986-10-27
Publication date: 1988-05-16

Description

[Brief explanation of the drawing]

第１図は本考案の一実施態様における磁気テー
プカセツトの一部分解斜視図、第２図は、ロツク
部材とガードパネルの動作を示すための要部拡大
斜視図、第３図は第１図に示す実施態様のカセツ
ト前後方向に沿つて垂直に切断した要部拡大断面
図、第４図は第３図と同様の部分を示した他の態
様における要部拡大断面図である。１……ロツク部材、２……上ハーフケース、３
……窓部材、４……受け部、５……平面部、６…
…尖突部、７……凹部、９，３０……トーシヨン
バネ、９ａ，３０ａ……作用アーム、９ｂ，３０
ｂ……コイル部、１０……アーム部、１１……凸
部、１２……プリズム体、１５……ガードパネル
、１６……側壁、１６ａ……突部、１７……回転
軸、２０……突起、２１……座部、２２……リブ
。 FIG. 1 is a partially exploded perspective view of a magnetic tape cassette according to an embodiment of the present invention, FIG. 2 is an enlarged perspective view of the main parts to show the operation of the lock member and guard panel, and FIG. 3 is the same as FIG. 1. FIG. 4 is an enlarged sectional view of the main part of the embodiment shown, cut vertically along the front-back direction of the cassette, and FIG. 4 is an enlarged sectional view of the main part of another embodiment showing the same portion as FIG. 3. 1...Lock member, 2...Upper half case, 3
...Window member, 4...Receiving portion, 5...Plane portion, 6...
...Pointed protrusion, 7...Recess, 9, 30...Torsion spring, 9a, 30a...Action arm, 9b, 30
b... Coil part, 10... Arm part, 11... Convex part, 12... Prism body, 15... Guard panel, 16... Side wall, 16a... Projection, 17... Rotating shaft, 20... Protrusion, 21... Seat, 22... Rib.

Claims

[Scope of claims for utility model registration] (1) Having a pair of hubs wrapped with magnetic tape,
It has a built-in sliding locking member that is biased toward the rear of the cassette by a torsion spring attached to the upper half case and locks the hub, and also has a rotatable guard panel that opens and closes the opening at the front of the cassette. 1. A magnetic tape cassette, wherein the torsion spring is configured to press the locking member toward the upper half case. (2) By forming a large-diameter seat at the base of the boss to which the torsion spring is attached, the operating arm of the torsion spring is configured to have an inclination toward the upper half case from the spring fulcrum to the application point at the tip. A magnetic tape cassette according to claim 1 of the utility model registration claim, characterized in that: (3) The magnetic tape cassette according to claim 1, wherein the torsion spring has a biasing force that presses the tip of the operating arm toward the upper half case.