JPS582771U

JPS582771U - Back tension mechanism in cassette VTR

Info

Publication number: JPS582771U
Application number: JP9413881U
Authority: JP
Inventors: 信夫岡田; 土田　武史
Original assignee: 三洋電機株式会社
Priority date: 1981-06-24
Filing date: 1981-06-24
Publication date: 1983-01-08

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

図面はいずれも本考案の二実流側を示し、第１図は外観
斜視図、第２−は要部分解斜視図、第３図はアンローデ
ィング時の平面図、第４図は移動ブロック及び回動アー
ムの分解斜視図、第５図イ。、口は夫々、第１及び第２固定プロＹりの斜視図、第６
図は第１回動アームの動作説明図、第７図は第２回動ア
ームの動作説明図、゛第８図は第３回動　４アームの動
作説明図、第９図はローディング時の平面図、第１０図
はローディング時のテープパス、の説明図、第１１図は
巻戻し及び早送り時のテ」プパスの説明図である。主な図番の説明、４・・・カセット、１４．１５・・・
上下ガイドシリンダ、３４・・・移動ブロック、６７・
・・ラック板、７θ・・・ピニオンギヤ、７０ａ・・・
円弧状切欠き、７３・・・バックテンションレバー、７
３ａ・・・バックテンションピン、７３ｂ・・・折曲片
、７４・・・発条、７５・・・回動位置検出装置、７６
・・・ストッパ。１．１・　゛ ■２′−１− ＩＪ α　　　　　　　３５　−３５ａ　　　　　　　　　ｔ
）ｊ１　　　　　□Ｊと　　　　　　　　　　　６０３９ｅ −第７図４The drawings all show the two actual flow sides of the present invention; Fig. 1 is an external perspective view, Fig. 2 is an exploded perspective view of the main parts, Fig. 3 is a plan view during unloading, and Fig. 4 is a moving block and Exploded perspective view of the rotating arm, FIG. 5A. , the mouth is a perspective view of the first and second fixed prongs, respectively, and the sixth
Figure 7 is an explanatory diagram of the operation of the first rotating arm, Figure 7 is an explanatory diagram of the operation of the second rotating arm, Figure 8 is an explanatory diagram of the operation of the third rotating arm, and Figure 9 is a plane during loading. 10 is an explanatory diagram of the tape path during loading, and FIG. 11 is an explanatory diagram of the tape path during rewinding and fast forwarding. Explanation of main drawing numbers, 4...cassette, 14.15...
Upper and lower guide cylinder, 34... moving block, 67.
...Rack plate, 7θ...Pinion gear, 70a...
Arc-shaped notch, 73... Back tension lever, 7
3a... Back tension pin, 73b... Bent piece, 74... Spring, 75... Rotation position detection device, 76
...Stopper. 1.1・゛■2'-1- IJ α 35 -35a t
)j1 □J and 6039e - Figure 7 4

Claims

[Scope of utility model registration request]

In a cassette type VTR in which a guide cylinder is disposed on one side of the cassette in a direction substantially perpendicular to the tape pulling direction of the cassette, a rack plate movable in the substantially perpendicular direction is engaged with the rack plate. a pinion gear provided on the pinion gear, a notch provided in the pinion gear, a lower back tension lever coaxially supported with the pinion gear, a protruding piece provided on the bar and loosely fitted in the notch, and the back tension lever. Back 7 placed on the tension lever
-7, the back tension pin is located in the notch of the cassette when the tape is not loaded, and the spring is stretched between the pinion gear and the rosette tension lever. When the rack plate is moved to a predetermined position, the back tension lever is rotated to a predetermined position and is allowed to rotate within the notch range. Tension machine.