JPS6355158B2

JPS6355158B2 -

Info

Publication number: JPS6355158B2
Application number: JP1160784A
Authority: JP
Inventors: Hitoshi Okada
Original assignee: Clarion Co Ltd
Current assignee: Faurecia Clarion Electronics Co Ltd
Priority date: 1984-01-24
Filing date: 1984-01-24
Publication date: 1988-11-01
Also published as: JPS60154383A

Description

【発明の詳細な説明】本発明は防塵カバーを有するテープ用カセツ
ト、特にその防塵カバーの開閉機構の改良に関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tape cassette having a dustproof cover, and particularly to an improvement in the opening/closing mechanism of the dustproof cover.

防塵カバーを有する従来のテープカセツト、例
えば現在広く使用されているVHS又はβ型ビデ
オテープカセツトは周知の如くビデオデツキへの
挿脱時に防塵カバーの開閉及びそのロツク、ロツ
ク解除のための機構を必要としており、構造が複
雑かつ高価となる問題があつた。またこれらのビ
デオテープカセツトはその防塵カバーが一方向の
開閉しか可能でなく、従つて通常のオーデイオ用
テープカセツトとは違つてテープカセツトの片面
しか利用できなかつた。 Conventional tape cassettes with dust-proof covers, such as the VHS or β-type video tape cassettes that are currently widely used, require a mechanism to open and close the dust-proof cover, lock it, and unlock it when inserting and removing the tape from the video deck. However, there was a problem that the structure was complicated and expensive. Furthermore, the dustproof cover of these video tape cassettes can only be opened and closed in one direction, and therefore, unlike ordinary audio tape cassettes, only one side of the tape cassette can be used.

もつともテープカセツトの両面を利用可能なよ
うに両方向開閉式のビデオテープカセツトもある
が、しかし従来のものはその防塵カバーを両方向
開閉可能とするための構造が複雑で高価となる欠
点を免れ得ない。 There are videotape cassettes that open and close in both directions so that both sides of the tape cassette can be used, but conventional ones have the disadvantage that the structure of the dustproof cover that can be opened and closed in both directions is complicated and expensive. .

本発明の目的は防塵カバーの開閉機構を、動作
が確実でしかも構造簡単かつ安価となるように改
良して上記従来技術の問題点を除去したテープ用
カセツトを提供するにある。 SUMMARY OF THE INVENTION An object of the present invention is to provide a tape cassette which eliminates the problems of the prior art by improving the opening/closing mechanism of the dustproof cover so that it operates reliably, has a simple structure, and is inexpensive.

本発明の他の目的は両方向又は一方向に開閉可
能な防塵カバー開閉機構を有するテープ用カセツ
トを提供するにある。 Another object of the present invention is to provide a tape cassette having a dustproof cover opening/closing mechanism that can be opened and closed in both directions or in one direction.

本発明の更に他の目的は防塵カバー開閉時のロ
ツク及びロツク解除機構を極めて簡単な構成とし
たテープカセツトを提供するにある。 Still another object of the present invention is to provide a tape cassette in which the locking and unlocking mechanisms for opening and closing the dustproof cover are extremely simple.

本発明はこれらの目的を達成するために、防塵
カバーがカセツトケースの前面に常時はバネによ
つて密閉されていて、上記カバーの両側端には開
閉用突部が設けられ、該突部は開孔が形成されて
おり、カセツトケースの両側壁内面に設けたピボ
ツトが上記開孔に遊嵌されて上記カバーを枢支
し、更に上記両側壁内面には少くとも一つのガイ
ド部が設けられ、プレーヤ内の開閉用部材と上記
カバーの当接により上記開閉用突部がガイド部に
沿つて回動するように案内されており、上記カバ
ーは上記バネによつてカセツトケース前面を密閉
するように復帰し、上記カバーの開閉が行なわれ
るように構成したことを特徴とする。 In order to achieve these objects, the present invention includes a dustproof cover that is always sealed on the front surface of the cassette case by a spring, and opening/closing protrusions are provided at both ends of the cover. An aperture is formed, and a pivot provided on the inner surface of both side walls of the cassette case is loosely fitted into the aperture to pivotally support the cover, and further, at least one guide portion is provided on the inner surface of the both side walls. The opening/closing protrusion is guided to rotate along the guide section by the contact between the opening/closing member inside the player and the cover, and the cover is configured to seal the front surface of the cassette case by the spring. The present invention is characterized in that the cover is opened and closed.

以下図面に示す実施例を参照して本発明を更に
説明すると、第１図乃至第４図は本発明一実施例
を示す。同図において、H₁〜H₃は夫々カセツト
プレーヤ内に設けられている消去ヘツド、記録ヘ
ツド、再生ヘツド、G₁〜G₄はガイドローラ、P₁
及びP₂はピンチローラ、C₁及びC₂はキヤプスタ
ン軸、PG₁及びPG₂はパツクガイドピン挿入孔、
Ｔはビデオテープ、CCはカセツトケースである。
これら部材は従来のものと同様の機能のものであ
るので、詳細な説明は省略する。 The present invention will be further described below with reference to embodiments shown in the drawings. FIGS. 1 to 4 show one embodiment of the present invention. In the figure, H ₁ to _{H 3} are erasing heads, recording heads, and reproducing heads respectively provided in the cassette player, G ₁ to _{G 4} are guide rollers, and P ₁
and P ₂ are pinch rollers, C ₁ and C ₂ are capstan shafts, PG ₁ and PG ₂ are pack guide pin insertion holes,
T stands for video tape and CC stands for cassette case.
Since these members have the same functions as conventional ones, detailed explanations will be omitted.

更に１は防塵カバー、２は開閉用突部、３は長
穴、４はピン、５及び６はガイド部、７はバネ、
８はカバー開閉用突起、９はピボツトである。な
お１０は通常のパツクガイドピンで、カバー開閉
時にカセツトが動かないように作用する。 Further, 1 is a dustproof cover, 2 is an opening/closing protrusion, 3 is an elongated hole, 4 is a pin, 5 and 6 are guide parts, 7 is a spring,
8 is a cover opening/closing projection, and 9 is a pivot. Reference numeral 10 designates a normal pack guide pin, which acts to prevent the cassette from moving when the cover is opened and closed.

防塵カバー１は例えば図示の如き形状をなして
いて、その両側端部には開閉用突部２が設けられ
ている。突部２には長穴３が形成されていると共
にピン４が植設されており、ピン４にはバネ７が
掛けられていて、常時はカバー１をカセツトケー
スCCの前面に密着せしめるようになつている。 The dustproof cover 1 has, for example, a shape as shown in the figure, and opening/closing protrusions 2 are provided at both ends thereof. A long hole 3 is formed in the protrusion 2, and a pin 4 is installed therein, and a spring 7 is hung on the pin 4, so that the cover 1 is normally brought into close contact with the front surface of the cassette case CC. It's summery.

ガイド部５及び６並にピボツト９は夫々カセツ
トケースCCの両側壁内面に図示の如き形状をな
すように設けられており、かつピボツト９は長穴
３に挿入されている。またカバー１の上下端面１
ａ，１ｂはテーパ状となつていて、ガイド部６，
７の先端テーパ面５ａ，６ａに接している。 The guide portions 5 and 6 and the pivot 9 are provided on the inner surface of both side walls of the cassette case CC so as to form the shape shown in the figure, and the pivot 9 is inserted into the elongated hole 3. Also, the upper and lower end surfaces 1 of the cover 1
a, 1b are tapered, and the guide portions 6,
It is in contact with the tip tapered surfaces 5a and 6a of No.7.

更にカバー開閉用突起８は少くとも１個カセツ
トプレーヤ内の所定位置に設けられている。 Further, at least one cover opening/closing projection 8 is provided at a predetermined position inside the cassette player.

さて、今、上述の如き構成のカセツトテープが
カセツトプレーヤに挿入されると、該プレーヤ内
の記録再生位置に上記カセツトテープがセツトさ
れる時に突起８がカバー１の下端部１ｃに当接す
る。するとカバー１はバネ７の張力に抗してガイ
ド部先端テーパ面５ａに沿つて矢印Ｂ方向に若干
引出されてから、突部２はピボツト９のまわりを
回動し、カバー１の側部の円弧状ガイド部１ａが
ガイド部５又は６の円弧状部５ｂ，６ｂに沿つて
案内され、従つてカバー１はその内面がガイド部
５又は６の外面と接触して矢印Ｃの方向へ回動し
て行き所定位置にて停止する。 Now, when a cassette tape constructed as described above is inserted into a cassette player, the protrusion 8 comes into contact with the lower end 1c of the cover 1 when the cassette tape is set at the recording/reproducing position in the player. Then, the cover 1 is pulled out slightly in the direction of arrow B along the tapered surface 5a at the tip of the guide part against the tension of the spring 7, and then the protrusion 2 rotates around the pivot 9 and the side part of the cover 1 is pulled out. The arcuate guide portion 1a is guided along the arcuate portions 5b and 6b of the guide portion 5 or 6, and therefore the cover 1 rotates in the direction of arrow C with its inner surface contacting the outer surface of the guide portion 5 or 6. and stop at a predetermined position.

次にカセツトテープの記録又は再生が終了し、
エジエクト操作が行なわれると、カセツトが取出
されることになるので、突起８からカバー１が離
れてカバー１はバネ７の張力によつて元の位置に
復帰する。 Next, recording or playback of the cassette tape is finished,
When the eject operation is performed, the cassette is taken out, so the cover 1 is separated from the protrusion 8 and returned to its original position by the tension of the spring 7.

かくしてカセツトのデツキへの挿脱に伴なつて
カバーの開閉が自動的に行なわれる。 In this way, the cover is automatically opened and closed as the cassette is inserted into and removed from the deck.

以上説明した所から明らかな如く本発明によれ
ば、防塵カバーをバネで常時ケース前面に密着さ
せているのでその開閉にあたつて従来のようなロ
ツク及びロツク解除手段は不要であり、構造が簡
単かつ安価となることは明らかである。また上記
実施例の構成ではカバーは両方向に開閉すること
ができるが、一方向にのみ開閉可能とすることは
容易である。 As is clear from the above explanation, according to the present invention, since the dustproof cover is always kept in close contact with the front of the case by the spring, there is no need for conventional locking and unlocking means to open and close the dustproof cover, and the structure is simplified. It is clear that it is simple and cheap. Further, in the configuration of the above embodiment, the cover can be opened and closed in both directions, but it is easy to make it possible to open and close only in one direction.

更にプレーヤ内に設けられるカバー開閉用突起
は少くとも１個あればよく、またカバー及びガイ
ド部の形状も実施例のものに限定されるものでは
ない。またカバー外側をテーパ状とすれば、プレ
ーヤ内の突起との係合が確実となるし、カバーと
ガイド部との係合する端面がテーパ状をなすよう
にすると開閉がスムーズとなる。 Furthermore, at least one protrusion for opening and closing the cover provided inside the player is sufficient, and the shapes of the cover and the guide portion are not limited to those of the embodiments. Further, if the outer side of the cover is tapered, engagement with the protrusion inside the player is ensured, and if the end surface where the cover and the guide portion engage is tapered, opening and closing becomes smooth.

なお、本発明はビデオカセツトテープ、オーデ
イオ用カセツトテープ、デイジタルオーデイオ用
カセツトテープ等に広く適用できること勿論であ
る。 It goes without saying that the present invention can be widely applied to video cassette tapes, audio cassette tapes, digital audio cassette tapes, etc.

[Brief explanation of drawings]

第１図ａ及びｂは本発明の一実施例の概略構成
図、第２図はそのカバー開閉機構の概略図、第３
図は第２図のＡ−Ａ線断面図、第４図は上記カバ
ー開閉機構の一部を示す斜視図である。１……防塵カバー、２……開閉用突部、３……
長穴、４……ピン、５，６……ガイド部、８……
カバー開閉用突起、９……ピボツト。 1A and 1B are schematic diagrams of an embodiment of the present invention, FIG. 2 is a schematic diagram of the cover opening/closing mechanism, and FIG.
The figure is a sectional view taken along the line A-A in FIG. 2, and FIG. 4 is a perspective view showing a part of the cover opening/closing mechanism. 1... Dustproof cover, 2... Opening/closing protrusion, 3...
Long hole, 4...pin, 5, 6...guide part, 8...
Protrusion for opening and closing the cover, 9...pivot.

Claims

[Scope of Claims] 1. A dustproof cover is always sealed on the front surface of the cassette case by a spring, and protrusions for opening and closing are provided at both ends of the cover, and the protrusions are provided with openings. Pivots provided on the inner surfaces of both side walls of the cassette case are loosely fitted into the openings to pivotally support the cover, and at least one guide portion is provided on the inner surfaces of the both side walls to allow opening and closing of the inside of the player. The opening/closing protrusion is guided to rotate along the guide part by the contact between the opening and closing member and the cover to open and close the cover, and the spring returns the cover to its original position. Characteristic cassette tape. 2. The tape cassette according to claim 1, wherein two guide portions are provided, and the cover can be opened and closed in both directions. 3. The tape cassette according to claim 1, wherein the outside of the cover is tapered. 4. The tape cassette according to claim 1, wherein the end surface where the cover and the guide portion engage is tapered.