JPS60164975A - Disk cartridge - Google Patents
Disk cartridgeInfo
- Publication number
- JPS60164975A JPS60164975A JP59018359A JP1835984A JPS60164975A JP S60164975 A JPS60164975 A JP S60164975A JP 59018359 A JP59018359 A JP 59018359A JP 1835984 A JP1835984 A JP 1835984A JP S60164975 A JPS60164975 A JP S60164975A
- Authority
- JP
- Japan
- Prior art keywords
- hub
- drive shaft
- face
- disk
- bearing
- 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
- Holding Or Fastening Of Disk On Rotational Shaft (AREA)
Abstract
Description
【発明の詳細な説明】 〔発明の利用分野〕 。[Detailed description of the invention] [Field of application of the invention].
本発明は、ディスクケースにディスクを回転可能な状態
に内蔵したディスクカートリッジに係り、特に回転軸へ
のディスクのチャ・ｙキング精度を向上するに好適なデ
ィスクカートリ・ジジに関するものである。The present invention relates to a disc cartridge in which a disc is rotatably housed in a disc case, and more particularly to a disc cartridge suitable for improving the accuracy of chucking and y-king the disc onto a rotating shaft.
従来から、取り扱いや保管が便利になるように、信号を
記録する円板状のディスクをディスクケース内に収納し
たディスクカートリッジが提案されている。このディス
クカートリッジは。2. Description of the Related Art Conventionally, a disk cartridge has been proposed in which a disk-shaped disk for recording signals is housed in a disk case for convenient handling and storage. This disc cartridge.
信号を記録する装置、および、信号を再生する装置に装
着され、信号の記録、再生に使用される。It is attached to a signal recording device and a signal reproducing device, and is used for recording and reproducing signals.
ディスクカートリッジ内のディスクは、記録。The disc inside the disc cartridge records.
再生の装置内の駆動軸によりディスクケース内で所定の
速度で回転され、ヘッドにより同ディスク上に同心円状
に信号を記録され、また、同記録された信号を再生する
。The disk is rotated at a predetermined speed within the disk case by a drive shaft in a playback device, and signals are recorded concentrically on the disk by a head, and the recorded signals are played back.
上記ディスクカートリッジを記録、再生の装置に装着し
た場合、記録、再生のヘッドとディスクは當に安定した
相対位置関係を必要とし。When the above disk cartridge is installed in a recording/playback device, the recording/playback head and the disk require a stable relative positional relationship.
そのため、ディスクはその駆動軸に対し垂直に締結する
ことが重要である。Therefore, it is important to fasten the disk perpendicularly to its drive shaft.
第１図は、本廃明の対象であるディスクカートリッジを
示す斜視図である。ディスク力−トリッジ１は、大きく
分けて保獲のだめのケース２と１回転自在に内蔵された
ディスク７からなる。FIG. 1 is a perspective view showing a disk cartridge that is subject to this abolition. The disk power tridge 1 is broadly divided into a case 2 which is a storage container and a built-in disk 7 that can rotate freely once.
ケース２は、内蔵したディスク７の保護と取り扱いを容
易にすることを目的に扁平な角形な形状を成しプラスチ
ック材料でできている。そのはＶ中央部に円形のディス
ク駆動用の窓５゜記録トラック対向面にヘッド挿入用の
窓４を有７し、これらの窓５．４はケース２の上下部に
貫通に形成されている。また、ケース２には、矢印Ａ方
向に摺動自在にシャッタ部材５が取り付けられ、不使用
の場合シャッタ部材５がヘッド挿入窓４を閉じ、記録再
生の装置に装置した場合このシャッタ部材５が摺動し、
ヘッド挿入窓４が開口する構造である。The case 2 has a flat rectangular shape and is made of plastic material for the purpose of protecting the built-in disk 7 and making it easy to handle. It has a circular disk drive window 5 at the center of the V and a head insertion window 4 at the surface facing the recording track, and these windows 5 and 4 are formed through the upper and lower parts of the case 2. . Further, a shutter member 5 is attached to the case 2 so as to be slidable in the direction of arrow A. When not in use, the shutter member 5 closes the head insertion window 4, and when the device is used in a recording/reproducing device, the shutter member 5 closes the head insertion window 4. sliding,
This structure has a head insertion window 4 open.
ディスク７は、信号を記録する円盤シート状の記録体８
と、該記録体８の中央に固定されてディスク駆動用の窓
６に対するハブ９から成る。The disk 7 is a disk-shaped recording body 8 for recording signals.
and a hub 9 fixed to the center of the recording medium 8 and connected to the window 6 for driving the disk.
記録体は磁気シート円盤、光デイスク円盤など記録、再
生が可能なものであれば良い。また。The recording medium may be anything capable of recording and reproducing, such as a magnetic sheet disk or an optical disk disk. Also.
体８に対応し信号を記録、再生できろものである。It can record and play back signals in correspondence with the body 8.
第２図、第６図は、従来のディスクカートリッジ１のハ
ブ９とディスク７を駆動す−る駆動軸１１の締結状態を
示す平面図、および、その断面図である。FIGS. 2 and 6 are a plan view and a cross-sectional view showing the state in which the hub 9 of the conventional disk cartridge 1 and the drive shaft 11 for driving the disk 7 are connected.
ハブ９は、外周に記録体８を固着しその中央に駆動軸１
１と締結するための穴９αを有し、その穴９αは締結時
に駆動軸１１を当接し受ける２個の軸受面９ｂ 、 ９
ｃと、締結時駆動軸１１を２個の軸受面ｑｈ 、 ？＋
？に押し当てるバネ部９ｄをもち、プラスチック材料で
成形されている。２個の軸受面９Ａ。The hub 9 has a recording medium 8 fixed to its outer periphery and a drive shaft 1 at its center.
1, and the hole 9α has two bearing surfaces 9b and 9 that abut and receive the drive shaft 11 when fastened.
c, and the two bearing surfaces qh of the drive shaft 11 when fastened, ? +
? It has a spring portion 9d that presses against the holder, and is molded from a plastic material. Two bearing surfaces 9A.
９Ｃは軸方向に一定の長さをもち、記録体８のなす面に
垂直に形成されている。9C has a constant length in the axial direction and is formed perpendicular to the plane formed by the recording body 8.
ハブ９と駆動軸１１の締結は、ハブ穴９ａに駆動軸１１
が挿入して来るとバネ部９ｄの先端９ｅが駆動軸１１に
当り、バネ部９ｄは半径方向に弾性変形する。さらに、
駆動軸１１が入るとバネ部９ｄの先端９ｅが駆動軸１１
の外周に当り、バネ部９ｄが弾性変形するとともに、バ
ネ部９ｄのバネ力により駆動軸１１と２個の軸受面９ｈ
、 ９ｃが当接し、ノ１ブ９と駆動軸１１の締結はバネ
部？ｄ−の先端９Ｃと２ケ所の軸受面９Ａ 、 ９ｃＯ
”） ３ケ所で駆動軸１１に対しノ１ブを位置決めし、
保持するものである。The hub 9 and the drive shaft 11 are connected by inserting the drive shaft 11 into the hub hole 9a.
When the spring portion 9d is inserted, the tip 9e of the spring portion 9d hits the drive shaft 11, and the spring portion 9d is elastically deformed in the radial direction. moreover,
When the drive shaft 11 is inserted, the tip 9e of the spring portion 9d is attached to the drive shaft 11.
, the spring portion 9d is elastically deformed, and the spring force of the spring portion 9d causes the drive shaft 11 and the two bearing surfaces 9h to
, 9c is in contact with each other, and the knob 9 and the drive shaft 11 are connected by the spring part? d- tip 9C and two bearing surfaces 9A, 9cO
”) Position the knob 1 relative to the drive shaft 11 at three locations,
It is something to keep.
したがって、ディスク７の位置決め精度を確保するため
にはハブ９のバネ部９ｄの形状精度。Therefore, in order to ensure the positioning accuracy of the disk 7, the shape accuracy of the spring portion 9d of the hub 9 is required.
および２個の軸受面９ｈ 、 ９ｃの形状精度、強度な
どを確保できるようにハブ９をプラスチ・ツク材料で、
成形技術により作らなければならない。In order to ensure the shape accuracy and strength of the two bearing surfaces 9h and 9c, the hub 9 is made of plastic material.
It must be made using molding technology.
しかしながら、駆動軸１１に対向する軸受面９ｈ。However, the bearing surface 9h facing the drive shaft 11.
９０部は成形で作る場合ひけを生じ、第５図に示すよう
に軸受面の中間部が凹形にへこみ、軸受面の上下の端部
が／’％ブ９の中心側に突出する形状になりやすい。When the 90 part is made by molding, sinkage occurs, and as shown in Fig. 5, the middle part of the bearing surface is concave, and the upper and lower ends of the bearing surface are shaped so that they protrude toward the center of the /'% plate 9. Prone.
一方、駆動軸１１は、ディスクカートリッジ１の操作性
、記録、再生の装置の大きさなどから。On the other hand, the drive shaft 11 is determined based on the operability of the disk cartridge 1, the size of the recording/playback device, etc.
その大きさが制限され、ハブ９に対し第６図に示すよう
に中間位まで嵌合するものである。また、ハブ９のバネ
９ｄは、ハブ９臭）中央部に位置している。第５図に示
すようにこのような状態では、駆動軸１１とハブ９の接
触が、バネ部９ｄの先端９１と軸受面９ｂ 、 ９ｃの
下端の５点（本来はバネ部９ｄの先端９ｅの１点と軸受
面ｑｈ 、 ９１？の２面）となり、バネ部９ｄの押え
力と軸受面９ｈ 、 ９ｃの下端の反力により偶力が作
用し、駆動軸１１に対しハブ９の締結が傾く、つまり、
ディスク７は駆動軸１１に対１〜傾いてしまう。したが
って、記録体８とヘッドの関係を安定にできず、その再
生出力は、変動し、その品位を劣化する欠点がある。Its size is limited, and it fits into the hub 9 up to an intermediate position as shown in FIG. Further, the spring 9d of the hub 9 is located at the center of the hub 9. As shown in FIG. 5, in this state, the drive shaft 11 and the hub 9 are in contact with each other at five points: the tip 91 of the spring portion 9d and the lower ends of the bearing surfaces 9b and 9c (originally, the tip 9e of the spring portion 9d). 1 point and two surfaces of the bearing surfaces qh and 91?), a couple acts due to the holding force of the spring portion 9d and the reaction force of the lower ends of the bearing surfaces 9h and 9c, and the connection of the hub 9 to the drive shaft 11 is tilted. ,In other words,
The disk 7 is tilted relative to the drive shaft 11 by one angle. Therefore, the relationship between the recording medium 8 and the head cannot be stabilized, and the reproduced output fluctuates, resulting in deterioration of quality.
上記、ハブの説明ではプラスチック材を用いた成形によ
りハブを作製する場合について記述したが、金属材料を
用いて成形する場合もノ１ブ９のバネ部９ｄの形状精度
、２個の軸受面の形状精度については同様なことが云え
、また同様に精度向上を図ら、ねばならない。In the above description of the hub, we have described the case where the hub is manufactured by molding using a plastic material, but when molding the hub using a metal material, the accuracy of the shape of the spring part 9d of the knob 9 and the shape of the two bearing surfaces are also important. The same can be said about shape accuracy, and we must also strive to improve it.
本発明の目的は、従来の欠点を改善し、確実にディスク
がその駆動軸に対し垂直に締結するハブをもったディス
クカートリッジを提供する゛ことにより、安定な信号の
記録、および、安定な信号の再生を図るものである。An object of the present invention is to improve the conventional drawbacks and provide a disk cartridge with a hub that reliably fastens the disk perpendicularly to its drive shaft, thereby achieving stable signal recording and stable signal recording. The aim is to revitalize the
本発明では、ハブの、２個の軸受面、とバネ部に着目し
、締結の場合駆動軸と接触する範囲の２個の軸受面がデ
ィスク面に対し垂直に形成されるようにハブの軸受面付
近のハブ厚を部分的に薄くするとともに、バネ部の押圧
の作用線がハブ受は面の中央にする構成とすることによ
り、ディスクがその駆動軸に対し垂直に締結することを
得るものである。In the present invention, focusing on the two bearing surfaces and the spring portion of the hub, the bearing of the hub is arranged so that the two bearing surfaces in the range that contacts the drive shaft when fastened are formed perpendicular to the disk surface. By partially reducing the thickness of the hub near the surface and configuring the line of action of the spring part to be in the center of the surface of the hub receiver, the disk can be fastened perpendicular to its drive shaft. It is.
以下１本発明の実施例を図面を用いて説明する。第４図
は２本発明のディスクカートリッジのハブとその駆動軸
との締結状態を示す平面図である。第５図は、本発明デ
ィスクカートリッジのハブを固着したディスクと駆動軸
の締結を示す断面図である。An embodiment of the present invention will be described below with reference to the drawings. FIG. 4 is a plan view showing the state in which the hubs of two disc cartridges of the present invention are connected to their drive shafts. FIG. 5 is a sectional view showing the connection between the disk to which the hub of the disk cartridge of the present invention is fixed and the drive shaft.
第４図、第５図において５１２は駆動軸１１のフランジ
部、１５は位置出し部材、２０はハブ、２１はハブ２０
のバネ部、２２はバネ部２１の先端で駆動軸１１に当接
する部分、２５は軸受面、２４は軸受面２５の裏側（外
周側）のハブ２０の薄肉部、２５は軸受面近付は設けた
切欠部である穴、２６は／ＳＳ２Ｏ２フランジ状に出た
部材、２７は記録体、２８はハブ２０の中央の穴を示し
、第１図、第２図、第５図と同一番号は同一物を示す。In FIGS. 4 and 5, 512 is a flange portion of the drive shaft 11, 15 is a positioning member, 20 is a hub, and 21 is a hub 20.
22 is the tip of the spring portion 21 that comes into contact with the drive shaft 11, 25 is the bearing surface, 24 is the thin part of the hub 20 on the back side (outer circumferential side) of the bearing surface 25, and 25 is the part near the bearing surface. 26 is a member protruding like a /SS2O2 flange, 27 is a recording body, 28 is a hole in the center of the hub 20, and the same numbers as in FIGS. 1, 2, and 5 are Indicates the same thing.
第４図、第５図に示す本発明のディスクカートリッジの
ハブ２０は、プラスチック材で成形により作られその外
周部に記録体８を固着し、その中央にハブ穴２８を持っ
ている。該ハブ穴２Ｂは、締結時、駆動軸１１と当接し
記録体のなす面に垂直に形成された２個の軸受面２５と
、駆動軸１１を２個の軸受面２５［対し軸方向の中間位
置に向って押し当てるバネ部２１を持っている。また、
軸受面２５が記録体２７のなす面に対し、より垂直に形
成されるように、その軸方向長さにわたり軸受面２６の
外周側の薄肉部２４は軸受面２５以外の外周側よりその
厚さを／２以下に薄くするためその外周側に貫通の穴２
５を設はプラスチック成形にて製作する場合熱収縮変形
による形状誤差が生じにくい構造としている。A hub 20 of the disk cartridge of the present invention shown in FIGS. 4 and 5 is made of a plastic material by molding, has a recording medium 8 fixed to its outer periphery, and has a hub hole 28 in its center. The hub hole 2B has two bearing surfaces 25 that are in contact with the drive shaft 11 and formed perpendicular to the plane of the recording medium when fastened together, and two bearing surfaces 25 that are in contact with the drive shaft 11 and formed perpendicular to the surface formed by the recording medium. It has a spring part 21 that presses against the position. Also,
In order for the bearing surface 25 to be formed more perpendicularly to the plane formed by the recording medium 27, the thin portion 24 on the outer peripheral side of the bearing surface 26 has a thickness greater than that on the outer peripheral side of the bearing surface 26 over its axial length. In order to make it thinner than /2, there is a through hole 2 on the outer circumference side.
5 has a structure in which shape errors due to heat shrinkage deformation are less likely to occur when manufactured by plastic molding.
本発明のハブ２０をもったディスクカートリッジとその
駆動軸１１の締結を第４図、第５図により説明する。デ
ィスクカートリッジを記録装置。The connection between the disk cartridge having the hub 20 of the present invention and its drive shaft 11 will be explained with reference to FIGS. 4 and 5. FIG. Recording device with disk cartridge.
再生装置に装着するとハフ２０と駆動軸１１が締結する
。When attached to the reproducing device, the huff 20 and the drive shaft 11 are fastened together.
ハフ２０と駆動軸１１の締結は、ハブ穴２８に駆動軸１
１が挿入し、バネ部２１が駆動軸１１に接触することか
ら始まる。まず、駆動軸１１が／’％ブ穴２８に入り、
バネ部２１の先端２２に肖り、さらに駆動軸１１かハブ
穴２８に入ると、バネ部２１の先端２２が駆動軸１１の
外周に当接し、バネ部２１はその半径方向に９中性変形
する。同時に弾性変形によりバネ部２１に発生した力は
駆動軸１１と２個の軸受面２５を押し当てる。ハフ２０
と駆動軸１１の締結は１．駆動軸１１と２個の軸受面２
５およびバネ部先端２２０５箇所で行なわれ、ハブ２０
に対する駆動軸１１の浸入は、ハフ２０のフランジ状の
部材２６と、駆動軸１１のフランジ部１２の位置出し部
材１５０当接により止まる。To connect the huff 20 and the drive shaft 11, the drive shaft 1 is inserted into the hub hole 28.
1 is inserted and the spring portion 21 comes into contact with the drive shaft 11. First, the drive shaft 11 enters the hole 28,
When the tip 22 of the spring portion 21 enters the drive shaft 11 and the hub hole 28, the tip 22 of the spring portion 21 comes into contact with the outer periphery of the drive shaft 11, and the spring portion 21 is neutrally deformed in the radial direction. do. At the same time, the force generated in the spring portion 21 due to elastic deformation presses the drive shaft 11 and the two bearing surfaces 25. Huff 20
The connection between the drive shaft 11 and the drive shaft 11 is as follows. Drive shaft 11 and two bearing surfaces 2
5 and 2205 points at the tip of the spring part, and the hub 20
Intrusion of the drive shaft 11 into the drive shaft 11 is stopped when the flange-shaped member 26 of the huff 20 and the positioning member 150 of the flange portion 12 of the drive shaft 11 come into contact.
すなわち、ハブ２０と駆動軸１１の締結が完了すると、
ハブ２０と駆動軸１１は、２箇所の軸受面とバネ部２１
の先端２２０５箇で固着する。このとき。That is, when the connection between the hub 20 and the drive shaft 11 is completed,
The hub 20 and the drive shaft 11 have two bearing surfaces and a spring portion 21.
It is fixed at 2205 points at the tip. At this time.
軸受面２６は記録体２７のなす面に対し垂直に形成され
ているのでバネ部２１の先端２２から作用するバネ部２
１の力と、２個の軸受面２５で発生する反力の作用線は
、駆動軸１１に垂直な（記録体のなす面に平行な）面を
形成し、ハブ２０を駆動軸１１に正しく固着し、記録体
２７を駆動軸１１に垂直に、また、正しい位置に締結す
る。Since the bearing surface 26 is formed perpendicularly to the plane formed by the recording body 27, the spring portion 2 acting from the tip 22 of the spring portion 21
The line of action of the force 1 and the reaction force generated on the two bearing surfaces 25 forms a plane perpendicular to the drive shaft 11 (parallel to the plane formed by the recording medium), and the hub 20 is aligned correctly with the drive shaft 11. and fasten the recording body 27 perpendicularly to the drive shaft 11 and in the correct position.
本実施例のように、駆動軸１１に接する軸受面２５の外
周側を部分的（当接する周方向の長さの１倍から５倍の
範囲）に他の部分より薄くする切欠穴２５を設けること
により軸受面２５の成形による変形がなくなり、駆動軸
１１に対し記録体２７を垂直に締結でき、記録体２７に
対し信号の記録。As in the present embodiment, a cutout hole 25 is provided in which the outer peripheral side of the bearing surface 25 in contact with the drive shaft 11 is partially made thinner than other parts (within a range of 1 to 5 times the length in the circumferential direction of contact). This eliminates deformation of the bearing surface 25 due to molding, allows the recording body 27 to be fastened perpendicularly to the drive shaft 11, and allows signals to be recorded on the recording body 27.
再生を安定にできる効果が生じる。This has the effect of stabilizing playback.
第６図、第７図は、本発明の第２の実施例を示す駆動軸
とハブの締結の断面図である。第６図、第７図において
、第１図から第５図と同一番号は同一物を示し、５０は
プラスチック材からなるハブ、５５は２箇所の軸受面、
ろ４は軸受面外周の薄肉部、５５は角形の貫通溝を示す
。FIGS. 6 and 7 are cross-sectional views of the connection between the drive shaft and the hub, showing a second embodiment of the present invention. 6 and 7, the same numbers as in FIGS. 1 to 5 indicate the same parts, 50 is a hub made of plastic material, 55 is two bearing surfaces,
A filter 4 indicates a thin wall portion on the outer periphery of the bearing surface, and a reference numeral 55 indicates a rectangular through groove.
第６図、第７図に示す第２の実施例のハブについて説明
する。第６図、第７図に示すハブ５０には２箇所の軸受
面５うの外側に切欠部たる溝５５が設けられている。し
たがって、軸受簡易と駆動軸１１０当接部分が非当接部
分に比べ薄肉となる１、このためプラスチック成形時に
当接部分の冷却が非当接部分よりも急速に行フヨわれ、
熱収縮変形による「ひけ」等の形状誤差が生ずることを
ＩＸノコ止できる。The hub of the second embodiment shown in FIGS. 6 and 7 will be described. The hub 50 shown in FIGS. 6 and 7 is provided with grooves 55 serving as notches on the outside of the bearing surface 5 at two locations. Therefore, the bearing is simple and the part that contacts the drive shaft 110 is thinner than the non-contacting part 1. Therefore, during plastic molding, the contacting part cools more rapidly than the non-contacting part.
The IX saw can prevent shape errors such as "sink marks" due to heat shrinkage deformation.
」−記のように軸受面５５の当接部分に形状誤差が生じ
にくいため、軸受面５５を正確に記録体２７而に対し垂
直に形成できろ。したがって記録体２７０位１６：出し
精度が向上する。尚本実施例ではバネ部２１は締結時駆
動軸１１を軸受面５５に対し軸方向の中間位ＩＷに向っ
て押し当てろ構成である。As shown in ``-'', the bearing surface 55 can be accurately formed perpendicular to the recording medium 27 because a shape error is less likely to occur in the abutting portion of the bearing surface 55. Therefore, the recording body 270 position 16: The accuracy of putting out is improved. In this embodiment, the spring portion 21 is configured to press the drive shaft 11 against the bearing surface 55 toward the axially intermediate position IW when fastened.
さらに薄肉部５４の周方向の長さは軸受面の駆動軸１１
との当接部分の長さの１〜５倍、厚さはその他の部分よ
りも／２以下になるように設定した。駆動軸１１とハブ
５５の締結状態は前記第４図。Further, the circumferential length of the thin wall portion 54 is equal to the length of the drive shaft 11 on the bearing surface.
The length of the abutting part was set to be 1 to 5 times, and the thickness was set to be less than /2 that of other parts. The state in which the drive shaft 11 and the hub 55 are connected is shown in FIG. 4 above.
第５図に示す場合と同様である。This is the same as the case shown in FIG.
第８図１．第９図により本発明の第５の実施例を示す。Figure 81. FIG. 9 shows a fifth embodiment of the present invention.
第８図はディスクの平面図、第９図は第８図に示すディ
スクをもったディスクカートリ・ソジと駆動軸の締結を
示す断面図である。第８図。FIG. 8 is a plan view of the disk, and FIG. 9 is a cross-sectional view showing the connection between the disk cartridge body having the disk shown in FIG. 8 and the drive shaft. Figure 8.
第′９図において前記符号と同一番号は同一物を示す。In FIG. '9, the same reference numerals as those mentioned above indicate the same parts.
４０はプラスチック拐で成形により製作されたハブ、４
５は軸受面、４４は軸受面４５の付近の薄肉部、４５は
貫通穴部を示す。40 is a hub made of plastic molded, 4
Reference numeral 5 indicates a bearing surface, 44 a thin wall portion near the bearing surface 45, and 45 a through hole portion.
第８図、第９図に示すディスクは、前記第４図、第５図
、第６図、第７図に示すハブ同様に軸受面４５の外周側
に貫通穴４５を設け、その軸受面４５が記録体２７のな
す面に対し垂直に形成されている。その締結、効果は前
記第４図、第５図。The disk shown in FIGS. 8 and 9 has a through hole 45 provided on the outer circumferential side of the bearing surface 45, similar to the hub shown in FIGS. 4, 5, 6, and 7, and the bearing surface 45 is formed perpendicularly to the plane formed by the recording body 27. The conclusion and effect are shown in Figures 4 and 5 above.
第６図、第７図のそれと同じであり、詳細説明は省く。This is the same as that shown in FIGS. 6 and 7, and detailed explanation will be omitted.
本発明によれば、軸受面の成形精度を向上でき、記録体
の面と駆動軸が垂直に締結されるので、記録体への信号
の記録、記録体からの信号の再生が安定し、その品位を
高める効果がある。According to the present invention, the forming precision of the bearing surface can be improved, and the surface of the recording medium and the drive shaft are fastened perpendicularly, so recording of signals to the recording medium and reproduction of signals from the recording medium are stabilized. It has the effect of improving quality.
、第１図は、ディスクカートリ・ソジを示す斜視図であ
る。第２図、第５図は従来の／１ブと駆動軸の締結状態
を示す平面図と断面図である。第４図、第５図は、本発
明のノ＼ブと駆動軸の締結状態を示す平面図と断面図で
ある。第６図は本発明の第２の実施例のノ１ブの平面図
、第７図は第６図に示すハブと駆動軸の締結を示す断面
図、第８図は本発明の第５の実施例の／１ブを持ったデ
ィスクの平面図であり、第９図は第８図に示すディスク
と駆動軸の締結を示す断面図である。
１・・・ディスクカートリッジ。
８．２７・・・記録体、
７・・・ディスク、
９．２０．５０・・・ハブ、
９α・・・穴、
？ｈ、 ９Ｃ，２５、５５・・・軸受面、９ｄ 、 ２
１・・・バネ部、
２５ 、５５ 、４５・・・切欠部。
躬 １ 口
平 ２ え
第 ３膓
弼 ４ 呂
第５ｍ
第 １
深す図, FIG. 1 is a perspective view showing a disk cartridge. FIGS. 2 and 5 are a plan view and a cross-sectional view showing a state in which a conventional /1 valve and a drive shaft are connected. FIGS. 4 and 5 are a plan view and a sectional view showing a state in which the knob and drive shaft of the present invention are connected. FIG. 6 is a plan view of a knob according to a second embodiment of the present invention, FIG. 7 is a sectional view showing the connection between the hub and drive shaft shown in FIG. 6, and FIG. 8 is a plan view of a knob according to a fifth embodiment of the present invention. FIG. 9 is a plan view of a disk having a /1 bar according to the embodiment, and FIG. 9 is a sectional view showing the connection between the disk and the drive shaft shown in FIG. 8. 1...Disc cartridge. 8.27...recording body, 7...disk, 9.20.50...hub, 9α...hole, ? h, 9C, 25, 55...Bearing surface, 9d, 2
1... Spring part, 25, 55, 45... Notch part.躬 1 口平 2 え 3 膓弼 4 郎 5m 1 し た す う
Claims (1)
の中心部に固定され該ディスクを回転する駆動軸が挿入
される穴と該穴の内周面に設けられた２箇所の軸受面と
該駆動軸を該軸受面に押圧するバネ部を有するハブと、
該ディスクを収納した筐体とを有するディスクカートリ
ッジにおいて、該軸受面の該駆動軸に接する当接部分の
厚さを非当接部分の厚さよりも薄くするための切欠部を
該ハブの該当接部分近傍′設けたことを特徴とするディ
スクカートリッジ。1. A disk-shaped disk on which signals are recorded, a hole into which a drive shaft fixed to the center of the disk to rotate the disk is inserted, and two bearing surfaces provided on the inner peripheral surface of the hole. a hub having a spring portion that presses the drive shaft against the bearing surface;
In a disk cartridge having a housing housing the disk, a notch is provided in the hub so that the thickness of the contact portion of the bearing surface that contacts the drive shaft is thinner than the thickness of the non-contact portion. A disk cartridge characterized in that it is provided near a portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59018359A JPS60164975A (en) | 1984-02-06 | 1984-02-06 | Disk cartridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59018359A JPS60164975A (en) | 1984-02-06 | 1984-02-06 | Disk cartridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60164975A true JPS60164975A (en) | 1985-08-28 |
Family
ID=11969495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59018359A Pending JPS60164975A (en) | 1984-02-06 | 1984-02-06 | Disk cartridge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60164975A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6322658U (en) * | 1986-07-21 | 1988-02-15 | ||
| JPH04286759A (en) * | 1991-03-15 | 1992-10-12 | Fuji Photo Film Co Ltd | Magnetic recording cartridge |
-
1984
- 1984-02-06 JP JP59018359A patent/JPS60164975A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6322658U (en) * | 1986-07-21 | 1988-02-15 | ||
| JPH04286759A (en) * | 1991-03-15 | 1992-10-12 | Fuji Photo Film Co Ltd | Magnetic recording cartridge |
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