JPS6230193Y2

JPS6230193Y2 -

Info

Publication number: JPS6230193Y2
Application number: JP1980107442U
Authority: JP
Priority date: 1980-07-28
Filing date: 1980-07-28
Publication date: 1987-08-03
Also published as: JPS5730856U

Description

【考案の詳細な説明】本考案はVTRカセツトの装着時にカセツト前
面からテープが自然露出するのを防止するもので
あり、この自然露出に共うローデイング時の障害
及びテープの損傷を解消するものである。[Detailed description of the invention] This invention prevents the tape from being naturally exposed from the front of the cassette when a VTR cassette is installed, and eliminates the trouble during loading and damage to the tape that occurs due to this natural exposure. be.

以下本考案の一実施例を図面に基づき詳細に説
明する。第１図はVTRの概略平面図であり、カ
セツト１の前面近傍に回転ドラム２を設置してか
つその前方にキヤプスタン軸３を形成し、前記回
転ドラム２周囲に回動する左ローデイングリング
４の延設部に形成する引出ピン５と、右ローデイ
ングリング６に設けていてキヤプスタン軸３に当
接するピンチローラ７とによりカセツト内のテー
プＴを図の如くローデイングする様にしている。
カセツト１は、第２図に示す如く、一対のリール
８，９にテープＴを装着しており、前面にカセツ
ト装着時に開放する蓋部材１０を設け、さらに前
記リール８，９に巻着するテープＴが該蓋部材１
０内部にピン１１，１２を介して張架され、さら
にこのテープＴの内方に前記ローデイング用の引
出ピン５及びピンチローラ７が第１図の仮想線に
示す位置にある時に、該引出ピン５及びピンチロ
ーラ７が位置する空所１３，１４を形成してい
る。 An embodiment of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a schematic plan view of a VTR, in which a rotating drum 2 is installed near the front of a cassette 1, a capstan shaft 3 is formed in front of the drum, and a left loading ring 4 rotates around the rotating drum 2. The tape T in the cassette is loaded as shown in the figure by means of a pull-out pin 5 formed on the extending portion of the cassette and a pinch roller 7 provided on the right loading ring 6 and in contact with the capstan shaft 3.
As shown in FIG. 2, the cassette 1 has a pair of reels 8 and 9 on which tape T is attached, a lid member 10 that is opened when the cassette is attached on the front surface, and a tape T wound around the reels 8 and 9. T is the lid member 1
0 through pins 11 and 12, and when the loading pull-out pin 5 and pinch roller 7 are in the position shown by the phantom line in FIG. 5 and pinch rollers 7 are located.

第３図に示す如く、カセツト１が装着位置にあ
る時、蓋部材１０はシヤーシーカバＣ上に突出す
る片１５，１５により開放する。この時カセツト
１は矢印方向から急激に装着され、そのためカセ
ツト１の空所１３，１４及びリール部の穴１６，
１６に通じるカセツト１内部にある空気圧のため
テープＴがカセツト１前方から回転ドラム１上方
へ露出する。また、同時に早送り巻戻し時のテー
プの高速巻取りに原因する静電気がカセツト１の
蓋部材１０に生じ、該蓋部材１０の開放に同調し
てテープＴが前方へ引出されることもある。従つ
て、開放したカセツトの蓋部材１０前方の凹所１
７に係合するべく回転ドラム２上面周端にＬ字形
のテープ露出防止片１８をネジ１９を介して取付
けてある。そしてカセツト１前面から回転ドラム
２上面へ通じる間隙Ｓを閉鎖する様にしてテープ
Ｔの回転ドラム２上方への突出を防止している。 As shown in FIG. 3, when the cassette 1 is in the loading position, the lid member 10 is opened by the pieces 15, 15 projecting above the chassis cover C. At this time, the cassette 1 is suddenly installed from the direction of the arrow, and therefore the spaces 13 and 14 of the cassette 1 and the holes 16 and 16 of the reel part are
16, the tape T is exposed from the front of the cassette 1 to the upper side of the rotating drum 1. At the same time, static electricity caused by the high-speed winding of the tape during fast-forwarding and rewinding may be generated in the lid member 10 of the cassette 1, and the tape T may be drawn forward in synchronization with the opening of the lid member 10. Therefore, the recess 1 in front of the lid member 10 of the opened cassette
An L-shaped tape exposure prevention piece 18 is attached to the upper peripheral edge of the rotating drum 2 via a screw 19 so as to be engaged with the tape 7 . A gap S leading from the front surface of the cassette 1 to the upper surface of the rotating drum 2 is closed to prevent the tape T from protruding above the rotating drum 2.

叙上の如く本考案は前面に蓋部材を形成してい
てその前面底部にテープ引出部材を位置せしめる
空所を有するVTR用カセツトを含むと共に、該
カセツト前面近傍に回転ドラムが位置するVTR
の構造において、カセツト装着時前記蓋部材を開
放してカセツト前面から回転ドラム上面へ通じる
間隙にテープの露出防止片を設けたので、テープ
の自然露出を防止してローデイング時に引出ピン
５及びピンチローラ７がテープに係合せずかつテ
ープが回転ドラムに正常に巻回しせず再生・録画
を不可能ならしめることなく、また引出ピン及び
ピンチローラが無理にテープを引出してテープを
損傷することがない等の効果がある。 As described above, the present invention includes a VTR cassette having a lid member formed on the front surface and a cavity in the bottom of the front surface in which a tape pull-out member is placed, and a rotating drum located near the front surface of the cassette.
In this structure, when the cassette is installed, the lid member is opened and a tape exposure prevention piece is provided in the gap leading from the front surface of the cassette to the upper surface of the rotating drum, so that the tape is prevented from being exposed naturally and the pull-out pin 5 and the pinch roller are removed during loading. 7 does not engage with the tape and the tape does not wind properly around the rotating drum, making playback and recording impossible, and the pull-out pin and pinch roller do not forcefully pull out the tape and damage the tape. There are other effects.

[Brief explanation of the drawing]

図面は本考案の一実施例を示すものであり、第
１図はローデイング状態を示すVTRの概略平面
図、第２図はカセツトの底面図、第３図は装着状
態を示す側面説明図である。１……カセツト、２……回転ドラム、１０……
蓋部材、１３，１４……空所、１８……テープ露
出防止片、Ｓ……間隙。 The drawings show one embodiment of the present invention, and FIG. 1 is a schematic plan view of the VTR showing the loading state, FIG. 2 is a bottom view of the cassette, and FIG. 3 is a side explanatory view showing the installed state. . 1...cassette, 2...rotating drum, 10...
Lid member, 13, 14... void, 18... tape exposure prevention piece, S... gap.

Claims

[Scope of utility model registration request]

A VTR that has a lid member formed on the front surface and a hollow space at the bottom of the front surface in which a tape drawer member is located.
In the structure of the VTR, which includes a cassette for use with the cassette and a rotating drum located near the front surface of the cassette, a tape exposure prevention piece is provided in the gap leading from the front surface of the cassette to the upper surface of the rotating drum when the lid member is opened during the cassette device. A device to prevent tape exposure when a VTR cassette is installed.