JPS6412272U

JPS6412272U -

Info

Publication number: JPS6412272U
Application number: JP10448987U
Authority: JP
Priority date: 1987-07-09
Filing date: 1987-07-09
Publication date: 1989-01-23
Anticipated expiration: 2002-07-09
Also published as: JPH0528625Y2

Description

[Brief explanation of the drawing]

第１図は本考案のロツク機構を具備した磁気テ
ープカセツトの１例を示す斜視図、第２図は同分
解図、第３図はロツク機構を有する同カセツトの
左前端部の一部破断拡大斜視図、第４図はロツク
レバーを点線で示めした第３図と同様な斜視図、
第５図は前蓋開放状態の同側面図、第６図は第５
図の線Ａ−Ａ断面図、第７図は要部平面断面図、
第８図は上ケース及びロツクレバーの斜視図、及
び第９図は下ケース側にあるロツク機構の斜視図
、第１０図は比較例によるロツクレバーの組み立
てを示す断面図、第１１図は本考案によるロツク
レバーの組み立てを示す断面図、及び第１２図は
上下ケースを合体した組み立て後の状態を示す断
面図である。１：上ケース、２：下ケース、３：ケース、５
：前蓋、７：枢着ピン、４０：ロツク機構、４１
：ロツクレバー、４２：係止爪、４３：凹所、４
４：係止部、４５：突出部、４６：位置決め壁、
４７：規制リブ、４８：規制リブ、４９：水平面
、５０：垂直面、５１：水平面、５２：筒状部、
５３：案内リブ、５４：スロツト、５５：アーム
、５６：支持板、５７：内孔、５８：圧縮ばね、
５９：切欠き、６０：ばね押え、６２：底面、６
３：凹溝。 Fig. 1 is a perspective view showing an example of a magnetic tape cassette equipped with the locking mechanism of the present invention, Fig. 2 is an exploded view of the same, and Fig. 3 is an enlarged partially broken view of the left front end of the cassette having the locking mechanism. A perspective view, FIG. 4 is a perspective view similar to FIG. 3 with the lock lever shown in dotted lines,
Figure 5 is a side view of the same side with the front lid open, and Figure 6 is the same side view of the front cover in the open state.
A sectional view taken along the line A-A in the figure, FIG. 7 is a plan sectional view of the main part,
Fig. 8 is a perspective view of the upper case and lock lever, Fig. 9 is a perspective view of the lock mechanism on the lower case side, Fig. 10 is a sectional view showing the assembly of the lock lever according to a comparative example, and Fig. 11 is according to the present invention. FIG. 12 is a cross-sectional view showing the assembly of the lock lever, and FIG. 12 is a cross-sectional view showing the assembled state in which the upper and lower cases are combined. 1: Upper case, 2: Lower case, 3: Case, 5
: Front lid, 7: Pivot pin, 40: Lock mechanism, 41
: Lock lever, 42: Locking pawl, 43: Recess, 4
4: Locking part, 45: Projection part, 46: Positioning wall,
47: Regulatory rib, 48: Regulatory rib, 49: Horizontal surface, 50: Vertical surface, 51: Horizontal surface, 52: Cylindrical part,
53: Guide rib, 54: Slot, 55: Arm, 56: Support plate, 57: Inner hole, 58: Compression spring,
59: Notch, 60: Spring holder, 62: Bottom, 6
3: Concave groove.

Claims

[Scope of utility model registration request]

A magnetic tape cassette including a cassette case consisting of an upper case and a lower case, a front cover having end plates pivotally attached to both ends of the front part, and a front cover locking mechanism, wherein the locking mechanism is configured to lock the cassette case at both ends of the case. a lock lever having a protrusion protruding from an opening in a side wall of one of the upper and lower cases so as to be operated by a lock release means on the recorder side; and a lock lever that is always directed toward the end plate. a compression spring to be deflected; a spring retainer provided on the one case to press the rear end; and a lock provided on one end plate of the front cover so as to be able to engage with a locking claw of the lock lever. Department and
and a guide means formed between the upper and lower cases to guide the sliding part of the lock lever, and the inner surface of the side wall of the one case has a groove that extends from the free edge of the side wall to the window. Features a locking mechanism in magnetic tape cassettes.