JPH10149652A - Disk cartridge - Google Patents
Disk cartridgeInfo
- Publication number
- JPH10149652A JPH10149652A JP31689496A JP31689496A JPH10149652A JP H10149652 A JPH10149652 A JP H10149652A JP 31689496 A JP31689496 A JP 31689496A JP 31689496 A JP31689496 A JP 31689496A JP H10149652 A JPH10149652 A JP H10149652A
- Authority
- JP
- Japan
- Prior art keywords
- disk
- annular projection
- shutter
- case
- recording
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Feeding And Guiding Record Carriers (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ディスク状媒体、
特に記録再生可能な光ディスク、光磁気ディスクなどを
ケース内に回転可能に収納したディスクカートリッジに
関するものである。TECHNICAL FIELD The present invention relates to a disk-shaped medium,
In particular, the present invention relates to a disk cartridge in which a recordable / reproducible optical disk, a magneto-optical disk and the like are rotatably housed in a case.
【０００２】[0002]
【従来の技術】一般に、情報媒体、例えば磁気ディス
ク、光ディスク或いは光磁気ディスクなどのディスク媒
体は、上下ケースに収納されたディスクカートリッジと
して用いられ、ケースに設けたヘッド挿入孔や駆動軸挿
入孔などの開口部を開閉するシャッタを備えることが知
られているが、従来の光ディスクあるいは光磁気ディス
クなどのディスク状媒体を収納したディスクカートリッ
ジでは、ディスク状媒体の中心に磁性金属（例えばＳＵ
Ｓ４３０）からなるハブと呼ばれる記録再生装置の駆動
軸と係合する芯出し部材を有するタイプが多用されてい
る。2. Description of the Related Art In general, an information medium, for example, a disk medium such as a magnetic disk, an optical disk or a magneto-optical disk is used as a disk cartridge housed in upper and lower cases. It is known to provide a shutter for opening and closing the opening of the disk. However, in a conventional disk cartridge containing a disk-shaped medium such as an optical disk or a magneto-optical disk, a magnetic metal (for example, SU) is placed at the center of the disk-shaped medium.
A type having a centering member which is engaged with a drive shaft of a recording / reproducing apparatus called a hub composed of S430) is often used.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、この種
のハブを有するディスクカートリッジは、部品点数が増
えるという問題のほか、ディスク状媒体に刻まれている
グルーブと同一の中心に正確にハブを固着する必要があ
り、画像処理などを用いなければならず生産性が著しく
悪いという問題や、ハブとディスク状媒体の熱膨張率の
違いからディスクに応力が加わりディスクの光学特性が
悪化するなどという問題があった。最近、ＤＶＤと呼ば
れる高密度記録の光ディスクを用いて記録再生するディ
スクカートリッジが提案されているが、このディスク
は、ＣＤと同一の外径寸法でハブはなく、厚さ０．６ｍ
ｍの基板を２枚貼り合わせて両面または片面に記録可能
なディスクであり、繰り返えし記録再生可能なディスク
は相変化という方式を用いて記録するので、グルーブは
貼り合せ面側となり、ディスク表面は通常凹凸がなく、
貼り合せ面は金型のスタンパが配置される面なので、ス
タンパ押さえによる凹溝が存在する。そのためにディス
ク表面側に、凹凸がないため製造過程においてディスク
を積み重ねると記録面同士が接してしまい、傷が入り生
産性が悪い欠点があった。本発明は、これら従来の問題
を解決しようとするもので、ハブのない記録再生可能な
ディスクでも生産性がよく、しかもディスクの記録面を
損傷しないで安全に保護し、しかもカートリッジ内でも
ディスクとケースとの干渉を起こさずディスクが記録再
生装置の駆動軸にスムーズにチャッキングできるディス
クカートリッジを安価な形態で提供することを目的とす
るものである。However, in a disk cartridge having this kind of hub, there is a problem that the number of parts is increased, and the hub is accurately fixed to the same center as the groove formed in the disk-shaped medium. It is necessary to use image processing and the like, and there is a problem that productivity is extremely poor, and a problem that stress is applied to the disk due to a difference in the coefficient of thermal expansion between the hub and the disk-shaped medium and optical characteristics of the disk are deteriorated. there were. Recently, a disk cartridge for recording and reproducing using a high-density recording optical disk called a DVD has been proposed. This disk has the same outer diameter as a CD, has no hub, and has a thickness of 0.6 m.
m is a disc that can be recorded on both sides or one side by bonding two substrates, and a disc that can be repeatedly recorded and reproduced is recorded using the phase change method. The surface is usually free of irregularities,
Since the bonding surface is the surface on which the stamper of the mold is arranged, there is a groove formed by pressing the stamper. Therefore, there is no irregularity on the surface of the disk, so that when the disks are stacked in the manufacturing process, the recording surfaces come into contact with each other, and there is a defect that the surface is damaged and the productivity is poor. The present invention is intended to solve these conventional problems, and has high productivity even with a disc capable of recording and reproduction without a hub, and furthermore, safely protects the recording surface of the disc without damaging it. It is an object of the present invention to provide an inexpensive disk cartridge capable of smoothly chucking a disk to a drive shaft of a recording / reproducing apparatus without causing interference with a case.
【０００４】[0004]
【課題を解決するための手段】本発明は、記録再生用ヘ
ッドまたは駆動軸などを挿入しうる開口部を有するケー
スの内部に、記録・再生可能なディスク状媒体を回転可
能に収納すると共に、前記開口部を開閉するシャッタを
ケースに摺動自在に備えたディスクカートリッジにおい
て、前記ディスク状媒体の中心に駆動軸用係合孔を有
し、該係合孔の周囲に円環状突起を設けると共に、該円
環状突起と同心円上で円環状突起の直径とは異径の円弧
状ディスク受け用リブを円環状突起に対面するケース内
面に突設したものである。According to the present invention, a recordable / reproducible disk-shaped medium is rotatably housed in a case having an opening through which a recording / reproducing head or a drive shaft can be inserted. In a disk cartridge having a shutter for opening and closing the opening slidably in a case, a drive shaft engaging hole is provided at the center of the disk-shaped medium, and an annular projection is provided around the engaging hole. An arc-shaped disc receiving rib having a diameter different from the diameter of the annular projection on the concentric circle with the annular projection is provided on the inner surface of the case facing the annular projection.
【０００５】[0005]
【発明の実施の形態】本発明の実施形態では、上下ケー
ス内に回転可能に収納されているディスク状媒体がハブ
のない円盤状であって中心に駆動軸の係合孔を有し、該
係合孔の周縁は記録再生装置の保持部となる中心孔付近
に円環状突起を設けてあり、その円環状突起の半径方向
外側に記録再生部が設けられていて、かつ円環状突起と
は直径が異なるディスク受け用リブをケース内面に備え
てあるので、ケース内に安全に載置収納できると共に、
ケース内面に記録面が接触することなく安全に回転で
き、しかもケース内での遊びについてもひっかかりやガ
タつきが生じないで安定した収納が可能であり、また製
造過程においてもディスク状媒体を積み重ねても円環状
突起により記録面同士が接触することがなく記録面への
傷付き防止が容易であって耐久性があって安全に使用で
きる。DESCRIPTION OF THE PREFERRED EMBODIMENTS In an embodiment of the present invention, a disk-shaped medium rotatably housed in an upper and lower case has a disk shape without a hub, and has a drive shaft engaging hole at the center thereof. The peripheral edge of the engagement hole is provided with an annular projection near a central hole serving as a holding portion of the recording / reproducing device, and the recording / reproducing portion is provided radially outside the annular projection, and the annular projection is Since the disk receiving ribs with different diameters are provided on the inner surface of the case, it can be safely placed and stored in the case,
It can be rotated safely without the recording surface coming into contact with the inner surface of the case, and it can be stably stored without play or play in the case. Also, the recording surfaces do not come into contact with each other due to the annular projections, so that the recording surfaces can be easily prevented from being damaged, and are durable and can be used safely.
【０００６】[0006]
【実施例】本発明の実施例を図１乃至図５の書き換え可
能で両面使用可能のＤＶＤディスクを収納するディスク
カートリッジの例で説明すると、上ケース１と下ケース
２とからなるケースの内部に、両面記録・再生可能な情
報媒体のディスク状媒体１０を回転自在に収納し、駆動
軸挿入孔１１，２１とヘッド挿入孔１２，２２などの開
口を形成したケースに、該開口を開閉するためのシャッ
タ４をケースの外面より一段低いシャッタ摺動領域５に
摺動自在に備えたカートリッジであって、前記シャッタ
４を上板４１と下板４２と、この両上下板４１，４２を
連結する連結板４３とから断面略コ字状に構成し、該シ
ャッタ４に摺動案内用の第１スライダ６及び第２スライ
ダ７と、シャッタ４の閉じ方向に付勢する弾性部材のバ
ネ８とを備えたもので、シャッタ４にケース１，２に設
けたガイド溝９に係合して摺動する第１スライダ６と、
ケース１，２に設けたガイド溝９1 に係合して摺動し、
かつ第１スライダ両端にバネ８で挾圧保持される一対の
第２スライダ７，７とを備え、シャッタ４を両方向に開
閉する構成としたものである。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to an example of a disk cartridge for storing a rewritable and double-sided usable DVD disk shown in FIGS. For opening and closing the disk-shaped medium 10 as an information medium capable of recording / reproducing on both sides in a case where the disk-shaped medium 10 is rotatably accommodated and the openings such as the drive shaft insertion holes 11 and 21 and the head insertion holes 12 and 22 are formed. A shutter 4 slidably provided in a shutter sliding area 5 which is one step lower than the outer surface of the case, and connects the shutter 4 to an upper plate 41 and a lower plate 42, and the upper and lower plates 41, 42. The shutter 4 includes a first slider 6 and a second slider 7 for sliding and guiding, and a spring 8 of an elastic member for urging the shutter 4 in a closing direction. Equipped In a first slider 6 which slides in engagement with the guide groove 9 provided on the case 1 to the shutter 4,
Engaging slides in the guide groove 9 1 provided on the case 1,
Further, a pair of second sliders 7, 7 which are held by springs 8 at both ends of the first slider are provided to open and close the shutter 4 in both directions.
【０００７】前記第１スライダ６と第２スライダ７とは
上下対称構造となっていて、前記第２スライダ７が第１
スライダ６をバネ８で挾圧保持したものであって、前記
上下ケース１，２の一方に組込後に上下ケース１，２を
固着したのち、シャッタ４を第１スライダ６に固着でき
る組立構成とする。即ち、シャッタ４は、第１スライダ
６に固定されており同時に移動する。また、第１スライ
ダ６を挟むようにその両端には第２スライダ７，７が圧
接され各第２スライダ７，７をケース中央部にある開口
両端縁に沿ってケースに設けられたストッパ壁２７に圧
接定着させ、スライダ６，７同士はバネ８で引っ張りの
弾性力を受けており第１スライダ６を閉じる位置に付勢
している。The first slider 6 and the second slider 7 have a vertically symmetric structure, and the second slider 7 is
An assembling structure in which the slider 6 is clamped and held by a spring 8 and the shutter 4 is fixed to the first slider 6 after the upper and lower cases 1 and 2 are fixed after being assembled to one of the upper and lower cases 1 and 2. I do. That is, the shutter 4 is fixed to the first slider 6 and moves at the same time. Second sliders 7, 7 are pressed against both ends of the first slider 6 so as to sandwich the first slider 6, and each of the second sliders 7, 7 is attached to a stopper wall 27 provided on the case along both ends of an opening at the center of the case. The sliders 6 and 7 are elastically pulled by a spring 8 to urge the sliders 6 to a position where the sliders 6 are closed.
【０００８】この場合、前記上下ケース内面にあるディ
スク状媒体収容エリアに回転可能に収納しているディス
ク状媒体１０はその中心に駆動軸用係合孔２３を有し、
該係合孔２３の周囲に円環状突起２４を設けると共に、
該円環状突起２４と同心円上で円環状突起２４の直径と
は異径、例えば小径の円弧状ディスク受け用リブ２５を
円環状突起２４に対面するケース内面に突設し、ディス
ク中心孔付近にある記録再生装置によって保持されるよ
うに構成してある。In this case, the disk-shaped medium 10 rotatably stored in the disk-shaped medium storage area on the inner surface of the upper and lower cases has a drive shaft engaging hole 23 at the center thereof.
An annular projection 24 is provided around the engagement hole 23,
An arc-shaped disc receiving rib 25 having a diameter different from the diameter of the annular projection 24 on the concentric circle of the annular projection 24, for example, is provided on the inner surface of the case facing the annular projection 24, and is provided near the center hole of the disk. It is configured to be held by a certain recording / reproducing device.
【０００９】前記円環状突起２４としてはディスク状媒
体１０の両面になだらかな傾斜面２４1 をもってそれぞ
れ備えられ、かつ該円環状突起２４に対面する上下ケー
ス内面に突起２４を避けた位置にそれぞれ設けられたデ
ィスク受け用リブ２５上に載置される。前記傾斜面２４
1 の存在は急激な厚み変化を避けディスク成形時の内部
歪などによる光学的特性の悪化を防止するために役立
つ。また、前記ディスク受け用リブ２５は、上下ケース
に形成された駆動軸挿入孔２３の周縁に沿って備えられ
前記ディスク状媒体１０の円環状突起２４の高さより高
いリブとしてディスクの安定した載置ができるようにし
てある。[0009] respectively provided respectively provided with a smooth inclined surface 24 1, and to avoid the projections 24 on the upper and lower cases inner surface that faces the circular annular projection 24 located on both sides of the annular projection the disk-like medium 10 as 24 It is placed on the disk receiving rib 25 that has been set. The inclined surface 24
The presence of 1 helps to avoid a sudden change in thickness and to prevent deterioration of optical characteristics due to internal distortion during disk molding. The disk receiving rib 25 is provided along the periphery of the drive shaft insertion hole 23 formed in the upper and lower cases, and is higher than the height of the annular projection 24 of the disk-shaped medium 10. I can do it.
【００１０】なお、前記ディスク状媒体１０はグルーブ
（図示せず）の存在する基板１０1，１０2 、即ち、非
常に細かい記録用凹凸が螺旋状または同心円状に刻まれ
た基板１０1 ，１０2 を貼り合わせて構成される。この
記録用凹凸は成形する金型にスタンパという微細加工を
施した円盤状の部材をはさんで成形して形成する。この
スタンパを金型内で保持するためのスタンパ押さえがあ
るために、グルーブの存在する側の基板１０1 ，１０2
には凹部２６がある。その反対側の面（通常光ピックア
ップで読み取る面）には、通常凹凸は設けないが、円周
状に記録面よりもわずかに高い円環状突起２４は、高さ
は約０．１ｍｍ程度で、なだらかな傾斜を有する形状が
望ましく、低過ぎると記録面との段差が不足し、高過ぎ
るとディスクの光学特性が悪化するので配慮する。この
円環状突起２４により、製造過程においてディスク状媒
体１０を積み重ねても記録面同士が接触することがなく
なる。また、図３に示すように上下ケース１，２の内面
にはディスクに設けた円環状突起２４を避けた位置に円
周状にディスク受け用リブ２５を設けることにより、デ
ィスクの記録面と上下ケース１，２内面が接することは
なく、またディスクの上下ケース１，２内での遊びにつ
いてもひっかかりが生じないで安全に用いられる。[0010] Incidentally, the disc-shaped medium 10 is a groove existing substrate 10 1 (not shown), 10 2, i.e., a substrate very fine recording irregularities engraved spirally or concentrically 10 1, 10 It is composed by bonding two . The recording concavities and convexities are formed by sandwiching a disk-shaped member, which has been subjected to fine processing called a stamper, into a molding die. Since there is a stamper holder for holding the stamper in the mold, the substrates 10 1 and 10 2 on the side where the groove exists are provided.
Has a recess 26. The opposite surface (usually a surface to be read by an optical pickup) is not usually provided with irregularities, but the annular projection 24 which is slightly higher in circumference than the recording surface has a height of about 0.1 mm. It is desirable that the shape has a gentle inclination. If the height is too low, the step with the recording surface is insufficient, and if the height is too high, the optical characteristics of the disc deteriorate. The annular projections 24 prevent the recording surfaces from contacting each other even when the disk-shaped media 10 are stacked in the manufacturing process. As shown in FIG. 3, a disk receiving rib 25 is provided circumferentially on the inner surfaces of the upper and lower cases 1 and 2 at positions avoiding the annular projections 24 provided on the disk, so that the recording surface of the disk is vertically The inner surfaces of the cases 1 and 2 are not in contact with each other, and the disc can be used safely without play in the upper and lower cases 1 and 2.
【００１１】さらに、前記ケースの前記シャッタ４が摺
動する一段低いシャッタ摺動領域５は、ガイド３を融着
や接着などの固着手段で備えてシャッタ上下板の自由端
の押えとし、上下ケース１，２の前面側端部を跨いで摺
動するシャッタ４に設けた第１スライダ６は、シャッタ
開閉操作部材が当るシャッタの突出部４４を補強する補
強部を両端に備え、シャッタ４に設けた取付孔４５に嵌
合する突部を設けるのがよい。Further, a lower shutter sliding area 5 of the case in which the shutter 4 slides is provided with a guide 3 by a fixing means such as fusion or bonding to hold the free ends of the shutter upper and lower plates, thereby providing the upper and lower casings. The first slider 6 provided on the shutter 4 that slides across the front side ends of the shutters 1 and 2 is provided on the shutter 4 with reinforcing portions at both ends for reinforcing the projecting portion 44 of the shutter that the shutter opening / closing operation member contacts. It is preferable to provide a projection that fits into the mounting hole 45.
【００１２】なお、前記シャッタ４は、第１スライダ６
に固定されており、例えば第１スライダ６および第２ス
ライダ７ケース内面のガイド溝９，９1 に嵌込んでシャ
ッタ４が閉じた状態から開いた状態まで摺動の案内をす
る。また、ディスクへの記録可能、不可能を選択的に設
定するための誤消去防止部材１３はケース内部にディス
クの上面用と下面用に２個独立に移動可能に設けられて
いる。なお、前記シャッタ４はポリアセタール樹脂など
を用いて射出成形して断面略コの字状に形成するが、樹
脂を用いると金属（例えばステンレスや表面処理したア
ルミニウム）に比べ、安価であることや軽量であるこ
と、さらに、複雑な形状でも比較的容易に作れる利点が
ある。The shutter 4 is provided with a first slider 6
Is fixed to, the guide sliding up state, for example, the first slider 6 and the second shutter 4 crowded fitted to the slider 7 of the inner surface of the case guide groove 9, 9 1 is opened from the closed state. In addition, two erroneous erasure preventing members 13 for selectively setting whether recording to the disk is possible or not are provided inside the case so as to be independently movable for the upper surface and the lower surface of the disk. The shutter 4 is injection-molded using a polyacetal resin or the like, and is formed in a substantially U-shaped cross section. However, if a resin is used, it is less expensive and lighter than a metal (for example, stainless steel or surface-treated aluminum). In addition, there is an advantage that even a complicated shape can be made relatively easily.
【００１３】図中、１９はラベルエリア、２０はディス
クカートリッジの位置決め孔である。In FIG. 1, reference numeral 19 denotes a label area, and reference numeral 20 denotes a positioning hole of a disk cartridge.
【００１４】[0014]
【発明の効果】本発明は、記録再生用ヘッドまたは駆動
軸などを挿入しうる開口部を有するケースの内部に、記
録・再生可能なディスク状媒体を回転可能に収納すると
共に、前記開口部を開閉するシャッタをケースに摺動自
在に備え、シャッタの閉じ方向に付勢するバネを備えた
ディスクカートリッジであって、前記ディスク状媒体の
中心に駆動軸用係合孔を有し、該係合孔の周囲に円環状
突起を設けると共に、該円環状突起と同心円上で円環状
突起の直径とは異径の円弧状ディスク受け用リブを円環
状突起に対面するケース内面に突設したことにより、上
下ケース内に回転可能に収納されているディスク状媒体
がハブのない円盤状であって中心に駆動軸の係合孔を有
し、該係合孔の周縁は記録再生装置の保持部となる中心
孔付近に円環状突起を設けてあり、その円環状突起の半
径方向外側に記録再生部が設けられていて、かつ円環状
突起とは直径が異なるディスク受け用リブをケース内面
に備えてあるので、ケース内に安全に載置収納できると
共に、ケース内面に記録面が接触することなく安全に回
転でき、しかもケース内での遊びについてもひっかかり
やガタつきが生じないで安定した収納が可能であり、ま
た製造過程においてもディスク状媒体を積み重ねても円
環状突起により記録面同士が接触することがなく記録面
への傷付き防止が容易であって、さらに、カートリッジ
内でもディスクとケースとの干渉を起こさずディスクが
記録再生装置の駆動軸にスムーズにチャッキングできる
安定した操作が可能で耐久性も大巾に向上できる。According to the present invention, a recordable / reproducible disk-shaped medium is rotatably housed in a case having an opening through which a recording / reproducing head or a drive shaft can be inserted, and the opening is provided. What is claimed is: 1. A disk cartridge comprising: a shutter slidably mounted on a case slidably in a case, and a spring for biasing the shutter in a closing direction. By providing an annular projection around the hole, and by providing an arc-shaped disk receiving rib concentric with the annular projection and having a diameter different from the diameter of the annular projection on the inner surface of the case facing the annular projection. The disk-shaped medium rotatably accommodated in the upper and lower cases is a disk-shaped medium without a hub, and has an engagement hole of a drive shaft at the center, and the periphery of the engagement hole is in contact with the holding portion of the recording / reproducing apparatus. Near the center hole The recording / reproducing part is provided on the radially outer side of the annular projection, and the disk receiving rib having a diameter different from that of the annular projection is provided on the inner surface of the case. It can be placed and stored, and it can be rotated safely without the recording surface touching the inner surface of the case, and it can be stably stored without play or rattling in the case, and also in the manufacturing process Even when the disk-shaped media are stacked, the recording surfaces do not come into contact with each other due to the annular projection, so that it is easy to prevent the recording surface from being damaged, and the disk is recorded without causing interference between the disk and the case even in the cartridge. Stable operation that can smoothly chuck the drive shaft of the playback device is possible, and durability can be greatly improved.
【図１】本発明の実施例を示す分離状態の斜視図であ
る。FIG. 1 is a perspective view of a separated state showing an embodiment of the present invention.
【図２】図１の例のシャッタを組込んだ状態を示す上ケ
ースを除いた下ケースの平面図である。FIG. 2 is a plan view of a lower case, excluding an upper case, showing a state in which the shutter of the example of FIG. 1 is incorporated.
【図３】図２の例のＡ−Ａ線における拡大縦断面図であ
る。FIG. 3 is an enlarged vertical sectional view taken along line AA of the example of FIG. 2;
【図４】図３の例の一部の詳細図で、（ａ）は組立前の
分離状態の縦断面図、（ｂ）は接合状態の縦断面図であ
る。FIGS. 4A and 4B are partial detailed views of the example of FIG. 3, wherein FIG. 4A is a longitudinal sectional view of a separated state before assembly, and FIG.
【図５】図２の例の下ケースの一部を示す斜視図であ
る。FIG. 5 is a perspective view showing a part of a lower case of the example of FIG. 2;
１ 上ケース ２ 下ケース ３ ガイド ４ シャッタ ５ シャッタ摺動領域 ６ 第１スライダ ７ 第２スライダ ８ バネ ９，９1 ガイド溝 １０ ディスク状媒体 １１，２１ 駆動軸挿入孔 １２，２２ ヘッド挿入孔 １３ 誤消去防止部材 ２０ 位置決め孔 ２３ 係合孔 ２４ 円環状突起 ２５ ディスク状受け用リブDESCRIPTION OF SYMBOLS 1 Upper case 2 Lower case 3 Guide 4 Shutter 5 Shutter sliding area 6 First slider 7 Second slider 8 Spring 9, 9 1 Guide groove 10 Disk-shaped medium 11, 21 Drive shaft insertion hole 12, 22 Head insertion hole 13 Incorrect Erasure prevention member 20 Positioning hole 23 Engagement hole 24 Annular projection 25 Disk-shaped receiving rib
Claims (4)
入しうる開口部を有するケースの内部に、記録・再生可
能なディスク状媒体を回転可能に収納すると共に、前記
開口部を開閉するシャッタをケースに摺動自在に備えた
ディスクカートリッジにおいて、前記ディスク状媒体の
中心に駆動軸用係合孔を有し、該係合孔の周囲に円環状
突起を設けると共に、該円環状突起と同心円上で円環状
突起の直径とは異径の円弧状ディスク受け用リブを円環
状突起に対面するケース内面に突設したことを特徴とす
るディスクカートリッジ。1. A recording / reproducing disk-shaped medium is rotatably housed in a case having an opening through which a recording / reproducing head or a drive shaft can be inserted, and a shutter for opening and closing the opening is provided. In a disk cartridge slidably provided in a case, a drive shaft engaging hole is provided at the center of the disk-shaped medium, and an annular projection is provided around the engagement hole. A disk cartridge characterized in that an arc-shaped disk receiving rib having a diameter different from that of the annular projection is provided on the inner surface of the case facing the annular projection.
面になだらかな傾斜面をもってそれぞれ備えられ、かつ
該円環状突起に対面する上下ケース内面にそれぞれディ
スク受け用リブを備えている請求項１記載のディスクカ
ートリッジ。2. The disk-shaped medium is provided with gently inclined surfaces on both sides of the disk-shaped medium, and disk receiving ribs are provided on inner surfaces of upper and lower cases facing the ring-shaped projections. The disc cartridge as described.
よりも高いリブで構成された請求項１または２記載のデ
ィスクカートリッジ。3. The disk cartridge according to claim 1, wherein said disk receiving rib is constituted by a rib higher than said annular projection.
下板を連結する連結板とから断面略コ字状に構成し、シ
ャッタを摺動案内するスライダと閉じる方向へ付勢する
弾性部材とを備えた請求項１，２または３記載のディス
クカートリッジ。4. The shutter has an upper plate, a lower plate, and a connecting plate connecting the upper and lower plates, and has a substantially U-shaped cross section, and a resilient biasing the shutter in a closing direction with a slider for slidingly guiding the shutter. 4. The disk cartridge according to claim 1, further comprising a member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31689496A JPH10149652A (en) | 1996-11-14 | 1996-11-14 | Disk cartridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31689496A JPH10149652A (en) | 1996-11-14 | 1996-11-14 | Disk cartridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10149652A true JPH10149652A (en) | 1998-06-02 |
Family
ID=18082105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31689496A Pending JPH10149652A (en) | 1996-11-14 | 1996-11-14 | Disk cartridge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10149652A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012192479A (en) * | 2011-03-16 | 2012-10-11 | Hitachi Koki Co Ltd | Dust-collecting cover and disk grinder including the same |
-
1996
- 1996-11-14 JP JP31689496A patent/JPH10149652A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012192479A (en) * | 2011-03-16 | 2012-10-11 | Hitachi Koki Co Ltd | Dust-collecting cover and disk grinder including the same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20030121 |