JPS63249988A - Disk cartridge - Google Patents

Abstract

PURPOSE:To improve the productivity by providing a spring receiving part of a shutter, which receives a spring end part, with a projecting part which is inserted to a gap between a lower case and an upper case. CONSTITUTION:End parts of a spring 7 are completely equally formed to an about L shape and are bilaterally symmetrical, and one end part of the spring 7 is fitted to a spring engaging part of a lower case 3, and the other end part 10 of the spring is detained on the shutter side, and a spring receiving face 11 of the shutter 1 has a projecting part 15 inserted between the lower case 3 and an upper case 12 to surely receive the spring end part 10. Consequently, the spring end part 10 is not inserted to the gap between the spring receiving surface 11 of the shutter 1 and an upper face 13 of lower and upper cases 3 and 12 to surely transmit the spring force to the shutter. Thus, the spring is assembled without paying attention to shapes of both ends of the spring to improve the productivity.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、２．５インチフロッピーディスクのような樹
脂で形成されたシャッターを有するディスクカートリッ
ジに関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a disk cartridge having a shutter made of resin, such as a 2.5-inch floppy disk.

従来の技術 従来フロッピーディスクのシャッターといえば３．５イ
ンチのフロッピーディスクにみられるように、ステンレ
ス性であシ、バネの形状は、はとんどのものが第５図の
ような形状をし、第６図のようにケース内に装着され、
バネの各端は、第７図のように、一端５１は樹脂である
ケース６２内に収納され残シの一端５３は、ステンレス
性であるシャッター５４の切り起こし部６５に係止され
て、シャッター５４が常時ヘッド開口部５６を塞ぐよう
にケースに圧接されている。Conventional technology Conventional floppy disk shutters are made of stainless steel, as seen in 3.5-inch floppy disks, and the shape of the spring is generally as shown in Figure 5. It is installed inside the case as shown in Figure 6,
As shown in FIG. 7, one end 51 of the spring is housed in a case 62 made of resin, and the other end 53 of the spring is locked to a raised part 65 of a shutter 54 made of stainless steel. 54 is pressed against the case so as to always close the head opening 56.

そして、このシャッター５４は、ステンレス性の平板に
穴あけ、折り曲げ、パリ取シなどの工程を施こし加工さ
れていた。しかし、ステンレス性の平板はロール状態で
保存されているだめに応力が残っていて、高い精度を必
要とされるシャッターの折り曲げ工程での歩留りが悪く
、またシャッターの表面に、フロッピーディスクの製造
メーカ名などの表示を印刷しなければならないが、金属
材料を使用しているために、印刷が難しくこの工程でも
歩留シが悪ぐ、結果として高価なシャッターとなってい
た。This shutter 54 was fabricated by performing processes such as drilling, bending, and deburring on a flat stainless steel plate. However, stress remains in the flat stainless steel plate when it is stored in a rolled state, resulting in poor yields in the shutter folding process, which requires high precision. Names and other information must be printed on the shutters, but since metal materials are used, printing is difficult and yields are low even in this process, resulting in expensive shutters.

ところが近年フ０７ビーデイスクの厳しい価格競争が展
開され、部材のコストダウンを検討されるなかで前記の
シャッターを樹脂化し、多数個取りすることでシャンク
−の価格を下げる事が検討され、それを具現化したもの
が２．６インチフロッピーディスクに見られるシャッタ
ーである。その２．５インチフロッピーディスクの概略
の構成を第８図に表わす。また本発明に関係するシャッ
タ一部分について詳細に表わすと第９図のようになる。However, in recent years there has been a fierce price competition for F07B discs, and as people are considering reducing the cost of components, it has been considered to reduce the price of the shank by making the shutter into resin and making multiple pieces. The embodiment of this technology is the shutter found on 2.6-inch floppy disks. The general structure of the 2.5-inch floppy disk is shown in FIG. Further, a portion of the shutter related to the present invention is shown in detail as shown in FIG. 9.

以下第９図をもとに説明を行なう。The explanation will be given below based on FIG. 9.

まずシャッター７１の中央内部には先端が美形形状をし
た２つの足７２が設けられておシ、シャッター７１が下
ケース７３に挿入される際美形先端部はひねられ、ｘ−
ｘ断面を示す第９図Ｂの状態に挿入完了され、下ケース
７３に設けられた段差７４と足７２の美形段差７６が適
度々ギャップをもってかみ合い摺動可能となる。また、
シャッター７１を下ケース７３のヘッド開口部７６が常
閉するようにケースに押しつけるだめのバネ７７は、第
９図に表わした形状をしている。そしてバネ７７の一端
である端部７８は、下ケース７３のバネ係合部７９には
まり込み、他の一端である端部８０は、図のようにシャ
ッター７１に設けられたバネ受け面８１に当接し、シャ
ッター７１を常時ケースに押しつける形となる。First, inside the center of the shutter 71 are provided two legs 72 with beautiful tips.When the shutter 71 is inserted into the lower case 73, the beautiful tips are twisted and
When the insertion is completed in the state shown in FIG. 9B showing the x-section, the step 74 provided on the lower case 73 and the beautiful step 76 of the foot 72 engage with each other with a suitable gap and are slidable. Also,
A spring 77 that presses the shutter 71 against the case so that the head opening 76 of the lower case 73 is normally closed has a shape as shown in FIG. An end 78, which is one end of the spring 77, fits into a spring engaging part 79 of the lower case 73, and an end 80, which is the other end, fits into a spring receiving surface 81 provided on the shutter 71 as shown in the figure. The shutter 71 is pressed against the case at all times.

発明が解決しようとする問題点 しかし、前記の構成の中でバネの形状に大きな問題があ
る。それは、バネ７７の端部７８．８０の形状が異なる
事に起因する。第１の問題点は、端部の形状が異なるた
めに作業者がケース内にバネを挿入する際バネの非常に
細い部分である端部７８．８０の形状を確認しなければ
ならないことである。さらに第２の問題点は、製品の生
産量が増大し、組立工程の自動化を図ろうとした場合、
バネ７７は、端部７８．８０の形状が異なるために、方
向規制を行なわなければならないが、形状の違いがわず
かであるために、方向規制が難しく、自動化が不可能で
、生産性が非常に悪いという事である。Problems to be Solved by the Invention However, in the above configuration, there is a major problem with the shape of the spring. This is due to the different shapes of the ends 78, 80 of the spring 77. The first problem is that the shapes of the ends are different, so when inserting the spring into the case, the operator must check the shape of the ends 78 and 80, which are very thin parts of the spring. . The second problem is that when the production volume of products increases and we try to automate the assembly process,
The spring 77 has different shapes at its end portions 78 and 80, so it is necessary to regulate the direction. However, since the difference in shape is slight, regulating the direction is difficult, making automation impossible, and greatly reducing productivity. This means that it is bad for people.

そこで本発明は、まずバネの端部の形状は、全く同一で
左右対称のものであることを前提とし、３．５インチフ
ロッピーディスクで自動化の実績のある第５図の形状と
しだ。しかしこのまま第９図のシャッター７１の形状の
ものにあてはめると、第４図のように線径φ０．２〜φ
０．３Ｍのバネ７７の端部８０がシャッター７１のバネ
受け面８１と下ケース７３及び上ケース１２の上面８３
とのすき間８４に入り込みシャッター７１をケースに押
しつける機能を満たさなくなる。Therefore, the present invention first assumes that the shapes of the end portions of the springs are exactly the same and symmetrical, and the shape shown in FIG. 5, which has a proven track record of automation in 3.5-inch floppy disks, is chosen. However, if this is applied to the shape of the shutter 71 shown in Figure 9, the wire diameter will be φ0.2 to φ as shown in Figure 4.
The end 80 of the 0.3M spring 77 connects to the spring receiving surface 81 of the shutter 71 and the upper surface 83 of the lower case 73 and upper case 12.
It gets into the gap 84 between the shutter 71 and the case, and the function of pressing the shutter 71 against the case is no longer fulfilled.

そこで本発明は、シャッターのバネ受け部の形状を種々
工夫することにより、バネの端部を確実に受け、バネ力
をシャッター正確に伝え、生産性６ヘー／ の高いフロッピーディスクを提供することを目的とした
ものである。Therefore, the present invention aims to provide a floppy disk with high productivity by deviating various shapes of the spring receiving part of the shutter to securely receive the end of the spring and accurately transmit the spring force to the shutter. This is the purpose.

問題点を解決するための手段 本発明は上記目的を達するため、バネ端部を受けるため
のシャッターのバネ受け部に、下ケースと上ケースのす
き間に入り込む突出部、あるいはシャッターのバネ受け
部の面板外の面を形成する突出面を設けた構成となって
いる。Means for Solving the Problems In order to achieve the above object, the present invention includes a protrusion that fits into the gap between the lower case and the upper case on the spring receiving part of the shutter for receiving the spring end, or a protruding part of the spring receiving part of the shutter. It has a configuration in which a protruding surface forming a surface outside the face plate is provided.

作　　用 本発明は上記した構成により、バネの端部を確実に受け
るととができるので、両端の形状が全く同一で左右対称
なバネを使用することができ、組立時にバネの形状に格
別を配慮を払うことなく組立てられ、生産性を高めるこ
とができるものである。Function The present invention, with the above-described configuration, can reliably receive the end of the spring, so it is possible to use a symmetrical spring with exactly the same shape at both ends, and it is possible to make special adjustments to the shape of the spring during assembly. It can be assembled without much care and can increase productivity.

実施例 第１図は、本発明の一実施例のディスクカートリッジを
示すものであり、バネ端部１０とシャッター１の保合部
の要部切欠き拡大斜視図である。Embodiment FIG. 1 shows a disk cartridge according to an embodiment of the present invention, and is an enlarged cutaway perspective view of a main part of a retaining portion between a spring end 10 and a shutter 1. As shown in FIG.

バネ７は、第５図に示すものと同一形状で、バネ７の端
部の形状は略り字状で全く同一であり左右対称の形状を
している。バネ７の一方の端部は、第９図に示したもの
と同じように、下ケース３のバネ保合部（第９図のバネ
保合部子９と同じ形状のもの）にはまり込む。バネ７の
他端のバネ端部１０は、シャッター側に係止されるので
あるが、シャッター１のバネ受け面１１は、第１図のよ
うに下ケース３、上ケース１２の間にバネ受け面１１の
凸部１５が入り込み、バネ端部１０を確実に受ける形と
なっている。従って、第４図のように、バネ端部１０が
シャッター１のバネ受け面１１と下ケース３及び上ケー
ス１２の上面１３とのすき間に入り込むことなく、バネ
力を確実にシャッターに伝達する。The spring 7 has the same shape as that shown in FIG. 5, and the end portions of the spring 7 have an oval shape that is completely the same and symmetrical. One end of the spring 7 fits into a spring retaining part (having the same shape as the spring retaining part 9 in FIG. 9) of the lower case 3 in the same way as shown in FIG. The spring end 10 at the other end of the spring 7 is locked to the shutter side, and the spring receiving surface 11 of the shutter 1 is located between the lower case 3 and the upper case 12 as shown in FIG. The convex portion 15 of the surface 11 is inserted into the spring end portion 10 to securely receive the spring end portion 10. Therefore, as shown in FIG. 4, the spring end 10 does not enter the gap between the spring receiving surface 11 of the shutter 1 and the upper surface 13 of the lower case 3 and upper case 12, and the spring force is reliably transmitted to the shutter.

また本発明の他の実施例として、第２図、第３図のよう
に、バネ端部１ｏを受けるためのシャッター１のバネ受
け部を８面、ｂ面、０面のように２面以上で形成する、
即ち、バネ受け部の面以外の面を形成する突出面をバネ
受け部と一体に設けることによっても確実にバネ力をシ
ャッター１に伝達することができる。In addition, as another embodiment of the present invention, as shown in FIGS. 2 and 3, the spring receiving portion of the shutter 1 for receiving the spring end 1o may be arranged on two or more sides such as the 8th side, the b side, and the 0th side. formed with,
That is, the spring force can be reliably transmitted to the shutter 1 also by providing a protruding surface that forms a surface other than the surface of the spring receiving portion integrally with the spring receiving portion.

発明の効果 本発明は、前述のような構成になっておシ、端部の両端
の形状が全く同一で左右対称な形状のバネを使用できる
シャッター形状であるために、バネ組立時にバネの両端
の形状を気にする事なく組立ができ生産性を高めること
ができる。また自動化を図る事も十分可能で、安価なフ
ロッピーディスクを実現できるものである。Effects of the Invention The present invention has the above-mentioned configuration, and since the shutter shape allows the use of a spring with both ends having exactly the same shape and a symmetrical shape, when assembling the spring, both ends of the spring can be used. Assembling can be done without worrying about the shape of the parts, increasing productivity. It is also possible to fully automate the process, making it possible to realize inexpensive floppy disks.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本発明の一実施例のディスクカートリッジを示
す要部拡大斜視図、第２図Ａ、第３図Ａは同他の実施例
を示す要部拡大斜視図、第２図Ｂ。 第３図Ｂは同要部断面図、第４図は従来のシャッターに
バネを挿着した時の不良状態を示す要部拡大斜視図、第
５図Ａ、Ｂはバネの正面図、及び側面図、第６図は３．
５インテフロンピーデイスクの一般的な形状を表わす正
面図、第７図Ａ、Ｂは同要部拡大側面図、同要部拡大正
面図、第８図は従来例のフロッピーディスクの分解斜視
図、第９図９　″ Ａは同要部拡大斜視図、第９図Ｂ、Ｃは同Ｘ−Ｘ断面図
、Ｙ−Ｙ断面図である。 １・・・・・・シャッター、３・・・・・・下ケース、
７・・・・・・バネ、１０・・・・バネ端部、１１・・
・・・・バネ受け面、１２・・・・・・上ケース、１３
・・・・・・上管下ケース上面、１４・・・・・・すき
間、１５・・・・・・バネ受け面凸部。FIG. 1 is an enlarged perspective view of a main part showing a disk cartridge according to an embodiment of the present invention, FIGS. 2A and 3A are enlarged perspective views of main parts showing another embodiment of the invention, and FIG. 2B is a perspective view showing an enlarged main part. Fig. 3B is a cross-sectional view of the same main part, Fig. 4 is an enlarged perspective view of the main part showing a defective state when a spring is inserted into a conventional shutter, and Figs. 5A and B are a front view and side view of the spring. Figure 6 is 3.
5 A front view showing the general shape of an inteflop disk, FIGS. 7A and 7B are enlarged side views of the same main parts, and an enlarged front view of the same main parts. FIG. 8 is an exploded perspective view of a conventional floppy disk. 9'' A is an enlarged perspective view of the same essential parts, and FIGS. 9B and C are XX sectional views and YY sectional views of the same. 1... Shutter, 3...・Lower case,
7... Spring, 10... Spring end, 11...
... Spring receiving surface, 12 ... Upper case, 13
...Top surface of upper tube lower case, 14...Gap, 15...Protrusion on spring receiving surface.

Claims (1)

【特許請求の範囲】[Claims] 情報を記録することができるディスク状の記録媒体を回
転可能に内蔵し、前記記録媒体を回転駆動するための駆
動体が挿入可能な駆動体挿入開口部と、前記記録媒体に
情報を記録もしくは、記録された情報を再生するための
磁気ヘッドが挿入可能なヘッド開口部とを有するカート
リッジケースと、磁気記録再生装置に装着されていない
場合に、前記ヘッド開口部より塵埃が入るのを防ぐため
に、前記カートリッジケースを摺動可能なようにはさみ
こみ、常時ヘッド開口部を防ぐようにバネでカートリッ
ジケースに圧接された樹脂よりなるシャッターを備え、
前記バネのほぼＬ字状をした端部を受けるための前記シ
ャッターのバネ受け部に、下ケースと上ケースのすき間
に入り込む突出部、あるいは前記シャッターのバネ受け
部の面以外の面を形成する突出面を設けたことを特徴と
するディスクカートリッジ。A drive body insertion opening rotatably containing a disk-shaped recording medium capable of recording information, into which a drive body for rotationally driving the recording medium can be inserted, and recording information on the recording medium or A cartridge case having a head opening into which a magnetic head for reproducing recorded information can be inserted, and in order to prevent dust from entering through the head opening when the cartridge case is not installed in a magnetic recording and reproducing device. A shutter made of resin is slidably inserted into the cartridge case and is pressed against the cartridge case by a spring so as to prevent the head from opening at all times.
A protrusion that fits into the gap between the lower case and the upper case, or a surface other than the surface of the spring receiver of the shutter is formed on the spring receiver of the shutter for receiving the substantially L-shaped end of the spring. A disc cartridge characterized by having a protruding surface.