JPH0214481A - Disk cartridge - Google Patents

Abstract

PURPOSE:To ensure the positioning at the front part of both half cases by setting the fitting accuracy of male/female bosses in each tightening position tightly front/left/right of both the half cases more than the fitting accuracy in each tightening position of backward/left/right. CONSTITUTION:A disk case 1 incorporating a disk 2 has a drive shaft insertion window 3 at nearly the middle and a head insertion window 4 in front respectively and the disk case consists of upper/lower half cases 1a, 1b tightened at two positions of front left/right and two positions at backward left/right in terms of sealing. Then the ruggedness fitting accuracy of the male/female bosses 15A, 15B at each tightening position f front left/tight of both the half cases 1a, 1b is set tightly more than the ruggedness fitting accuracy of the male/ female bosses 15A, 15B at each tightening position of backward left/right of both the half cases 1a, 1b. Thus, the covering of both the half cases 1a, 1b is facilitated and the positioning of the half cases 1a, 1b is ensured with high accuracy.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、ディスクケースに磁気ディスクや光ディスク
などの信号記録用ディスクを内装したディスクカートリ
ッジに係り、ディスクケースを構成する上下のハーフケ
ースの締結構造に改良を加えたものである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a disk cartridge in which a signal recording disk such as a magnetic disk or an optical disk is housed in a disk case, and the present invention relates to a disk cartridge in which a signal recording disk such as a magnetic disk or an optical disk is housed in a disk case. This is an improved structure.

〔従来の技術〕[Conventional technology]

本発明において、第１図に示すごとくディスク２を内蔵
する扁平な硬質のディスクケース１が上下−組のハーフ
ケース１ａ・１ｂを蓋合わせ状に結合してなり、ディス
クケース１のほぼ中央部位に駆動軸挿入窓３を、この駆
動軸挿入窓３の前方にヘッド挿入窓４をそれぞれ有する
ディスクカートリッジは公知である。In the present invention, as shown in FIG. 1, a flat hard disk case 1 containing a built-in disk 2 is made up of upper and lower half cases 1a and 1b joined together in a lid-to-bottom manner. A disk cartridge having a drive shaft insertion window 3 and a head insertion window 4 in front of the drive shaft insertion window 3 is known.

また、この種のハーフケースＩａ−１ｂを前方左右およ
び後方左右において超音波溶着やタフピングねじて締結
することも公知である。It is also known that this type of half case Ia-1b is fastened by ultrasonic welding or tufting screws on the front left and right sides and the rear left and right sides.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

かかるディスクカートリッジにおいては、前方にヘッド
挿入窓４を有するので１両ハーフケース１ａ−１ｂの特
に前部が位置ずれなく締結されていることが肝要である
。そこで位置決め状態を確保するために２両ハーフケー
ス１ａ・１ｂの一方から雄ボスを、他方から雌ボスをそ
れぞれ突設し。Since such a disk cartridge has a head insertion window 4 at the front, it is important that the two half cases 1a-1b, especially the front portions, are fastened together without misalignment. Therefore, in order to ensure the positioning state, a male boss is provided protruding from one side of the two half cases 1a and 1b, and a female boss is provided protruding from the other side.

これら雌雄ボスを凹凸嵌合することが考えられる。It is conceivable to fit these male and female bosses in a concave-convex manner.

しかるに従来は、前述の各締結箇所を凹凸嵌合させるに
せよ、その嵌合精度を全て一律にすることしか念頭にな
かった。そのため嵌合精度が甘いと１両ハーフケース１
ａ・１ｂの蓋合わせ作業（組付は作業性）は良くなるが
、依然として位置決め精度が出ない。他方、嵌合精度を
全体に厳しくすると１組付は作業性が悪くなる。といっ
たジレンマに陥らざるを得なかった。However, in the past, even though the above-mentioned fastening points were to be fitted in concave and convex shapes, the only thing that was in mind was to make the fitting accuracy uniform throughout. Therefore, if the fitting accuracy is poor, 1 car half case 1
Although the lid matching work of a and 1b (assembling workability) is improved, positioning accuracy is still not achieved. On the other hand, if the overall fitting accuracy is made stricter, the workability of one assembly becomes worse. I had no choice but to fall into a dilemma.

本発明は、かかる観点から両ハーフケースの締結箇所に
改良を加え９組付は作業性を確保したうえで両ハーフケ
ースの前部における位置決めを確実に行えるようにした
ディスクカートリッジを得るにある。From this point of view, the present invention provides a disk cartridge in which the fastening points of both half cases are improved, workability is ensured during assembly, and positioning of both half cases can be reliably performed at the front.

〔課題を解決するための手段〕[Means to solve the problem]

本発明は、ディスク２を内蔵するディスクケース１がほ
ぼ中央部位に駆動軸挿入窓３を、これの前方にヘッド挿
入窓４をそれぞれ有し、ディスクケース１が前方の左右
２箇所および後方の左右２箇所で蓋合わせ状に締結され
る上下のハーフケース１ａ・１ｂからなるディスクカー
トリッジにおいて１両ハーフケース１ａ・１ｂの前方左
右の各締結箇所における雌雄ボス１５Ａ・１５Ｂの凹凸
嵌合精度が、後方左右の各締結箇所におけるｉ雄ボス１
６Ａ・１６Ｂの凹凸嵌合精度よりも緊密に寸法設定され
ていることを特徴とするものである。According to the present invention, a disk case 1 containing a disk 2 has a drive shaft insertion window 3 approximately in the center and a head insertion window 4 in front of the drive shaft insertion window 3, and the disk case 1 has two locations in the front left and right and rear left and right locations. In a disc cartridge consisting of upper and lower half cases 1a and 1b that are fastened together in two places, the fitting accuracy of the male and female bosses 15A and 15B at the front left and right fastening points of each half case 1a and 1b is as follows. i male boss 1 at each fastening point on the left and right
It is characterized in that the dimensions are set more closely than the concavity and convex fitting precision of 6A and 16B.

〔作用〕[Effect]

組付けに際しては、下側のハーフケース１ｂにディスク
２を装着したのち、下側のハーフケース１ｂに上側のハ
ーフケース１ａを被せ付けることになる。その際に、前
方左右の締結箇所における両ハーフケース１ａ・Ｉｂの
雌雄ボス１５Ａ・１５Ｂさえ嵌合すれば、該当の雌雄ボ
ス１５Ａ・１５Ｂの嵌合精度は厳しく設定しであるので
１両ハーフケースｌａ・１ｂの位置決めを確実に図るこ
とができ、嵌合精度の甘い後方左右の締結箇所における
雌雄１６Ａ・１６Ｂはそのまま容易に嵌合できる。その
後に各締結箇所を超音波溶着又はねじで締結することに
なる。When assembling, the disk 2 is attached to the lower half case 1b, and then the upper half case 1a is placed over the lower half case 1b. At that time, as long as the male and female bosses 15A and 15B of both half cases 1a and Ib at the front left and right fastening points are fitted, the fitting accuracy of the corresponding female and male bosses 15A and 15B is set strictly, so one car half case The positioning of 1a and 1b can be ensured, and the male and female 16A and 16B can be easily fitted as they are at the rear left and right fastening points where fitting accuracy is poor. After that, each fastening location is fastened by ultrasonic welding or screws.

〔発明の効果〕〔Effect of the invention〕

かかる本発明によれば、全ての締結箇所における嵌合精
度を厳しく設定した形式に比べて両ハーフケース１ａ・
１ｂの蓋合わせ作業が飛躍的に容易になるものでありな
がら、ディスクケース１の重要な前部におけるハーフケ
ース１ａ−１ｂどうしの位置決めを高精度に確保できる
。According to the present invention, both half cases 1a
While the work of fitting the lids of the disk case 1b becomes dramatically easier, positioning of the half cases 1a and 1b at the important front part of the disk case 1 can be ensured with high precision.

〔実施例〕〔Example〕

以下、その詳細を図面に基づき説明すると、第１図ない
し第７図は本発明に係るディスクカートリッジの第１実
施例を示しており、これは四角形の扁平な硬質ディスク
ケース１と、このディスクケース１に可回転に内装され
る（磁気）ディスク２とからなる。Hereinafter, the details will be explained based on the drawings. FIGS. 1 to 7 show a first embodiment of the disc cartridge according to the present invention, which consists of a rectangular flat hard disc case 1 and the disc case. 1 and a (magnetic) disk 2 rotatably installed inside the disk.

ディスクケース１は上下のハーフケース１ａ・１ｂを四
隅の４箇所で蓋合わせ状に締結してなり。The disk case 1 is made up of upper and lower half cases 1a and 1b that are fastened together at four points at the four corners in a lid-like manner.

はぼ中央部に駆動軸挿入窓３を、その前方にヘッド挿入
窓４をそれぞれ上下貫通状に形成しである。A drive shaft insertion window 3 is formed in the center of the dome, and a head insertion window 4 is formed in front of the drive shaft insertion window 3 in a vertically penetrating shape.

ディスク２は円盤状の記録シート（磁気記録シート）５
と、該シート５の中央に一体に結合されて前記駆動軸挿
入窓３に臨むハブ６とからなる。The disk 2 is a disc-shaped recording sheet (magnetic recording sheet) 5
and a hub 6 integrally connected to the center of the seat 5 and facing the drive shaft insertion window 3.

かくしてディスクドライブにディスクカートリッジを装
填すると、駆動軸挿入窓３を介してディスクドライブ側
の部材でハブ６がチャッキングされてディスク２が回転
し、上下ハーフケース１ａ・１ｂの各内面に付設の不織
布ライナ８・８が記録シート５に摺接してクリーニング
する基本構造のものである。When the disk cartridge is loaded into the disk drive in this way, the hub 6 is chucked by a member on the disk drive side through the drive shaft insertion window 3, the disk 2 rotates, and the nonwoven fabric attached to each inner surface of the upper and lower half cases 1a and 1b is rotated. It has a basic structure in which liners 8 come into sliding contact with the recording sheet 5 for cleaning.

図の各ハーフケース１ａ・１ｂは全く同一形状に形成さ
れており、その後端側は左右両側面に設けた段部１０を
介して左右対称形に張り出し形成し、ディスクケース１
の左右幅寸法が前後にわたって同一ではなく後端部にお
いて広幅になる前後が非対称形のものとし、ディスクカ
ートリッジが前後向きを誤ってディスクドライブに装填
されることを防止している。Each of the half cases 1a and 1b shown in the figure is formed in exactly the same shape, and the rear end side is formed to project symmetrically through step portions 10 provided on both left and right sides, and the disk case 1
The left and right width dimensions of the disc cartridge are not the same across the front and back, but are asymmetrical in that they become wider at the rear end to prevent the disc cartridge from being loaded into the disc drive in the wrong orientation.

各ハーフケース１ａ・１ｂは外周に壁１１が立設され、
内側に該外周壁１１の四隅を仕切って実質的にほぼ円形
のディスク収容室１２を区画形成する内壁１３が分断状
に立設され、上下ハーフヶ−ス１ａ・１ｂは面一状に設
定した外周壁１１と内壁１３の端面で突き合わされる。Each half case 1a, 1b has a wall 11 erected on the outer periphery,
An inner wall 13 is provided in a divided manner to partition the four corners of the outer circumferential wall 11 to form a substantially circular disk storage chamber 12, and the upper and lower half-cases 1a and 1b have an outer periphery set flush with each other. The end faces of the wall 11 and the inner wall 13 are butted against each other.

各ハーフケースｌａ・１ｂにおいて、ディスク収容室１
２の中央に円形の駆動軸挿入窓３が透設され、この駆動
軸挿入窓３の前方の左右中央に。In each half case la/1b, disk storage chamber 1
A circular drive shaft insertion window 3 is transparently provided in the center of the drive shaft 2, and at the left and right center in front of this drive shaft insertion window 3.

綱長い前後向きのヘッド挿入窓４が連通状に透設されて
いる。ヘッド挿入窓４の左右開口縁は平行で、駆動軸挿
入窓３の中心を通りケース前端縁と直交する仮想中心線
Ｐがヘッド挿入窓４を左右に二分する位置関係にある。A head insertion window 4 facing forward and backward with a long rope is transparently provided. The left and right opening edges of the head insertion window 4 are parallel, and a virtual center line P passing through the center of the drive shaft insertion window 3 and perpendicular to the front edge of the case divides the head insertion window 4 into left and right halves.

すなわち円形の駆動軸挿入窓３と、該駆動軸挿入窓３の
直径よりも左右小幅とした長方形のヘッド挿入窓４とが
、１！孔状に連通しており′、ヘッド挿入窓４の前端縁
は外周壁１１の内端まで延びているので、ヘッドの径方
向の移動ストロークを大きく採ることができ、その分だ
けディスク２への記録量を増やすことができる。なお、
駆動軸挿入窓３は左右の中央に位置すればよく前後の中
央に位置する必要はない。That is, a circular drive shaft insertion window 3 and a rectangular head insertion window 4 whose left and right widths are smaller than the diameter of the drive shaft insertion window 3 are 1! Since the front edge of the head insertion window 4 extends to the inner end of the outer circumferential wall 11, a large movement stroke in the radial direction of the head can be taken, and the movement of the head to the disk 2 is correspondingly large. The amount of recording can be increased. In addition,
The drive shaft insertion window 3 only needs to be located in the center of the left and right sides, and does not need to be located in the center of the front and back.

外周壁１１と内壁１３で囲まれる四隅の区画内には、上
下のハーフケース１ａ・１ｂを締結するためのボス１５
Ａ・１５Ｂ・１６Ａ・１６Ｂを有する。このうち、前方
左右の締結箇所における一組のボス１５Ａ・１５Ｂと、
後方左右の締結箇所における一組のボス１６Ａ・１６Ｂ
とはそれぞれ対をなしている。In the four corner sections surrounded by the outer peripheral wall 11 and the inner wall 13, there are bosses 15 for fastening the upper and lower half cases 1a and 1b.
It has A, 15B, 16A, and 16B. Among these, a set of bosses 15A and 15B at the front left and right fastening points,
A set of bosses 16A and 16B at the rear left and right fastening points
are paired with each other.

即ち、第２図および第３図において、前側のボス１５Ａ
・１５Ｂのうち、左方の雄ボス１５Ａはハーフケース１
ａ（ｌｂ）の内面から外周壁１１の蓋合わせ面よりも高
く筒状に突設し、その突端部が内面に外拡がりのテーパ
面１７を有する先細り状に形成されている。また前方右
側の雌ボス１５Ｂは他方のハーフケースの前記雄ボス１
５Ａが密着状に嵌入し得る凹穴１９を有する筒状に形成
され、その突端面は外周Ｗ１１の蓋合わせ面と面一であ
る。これらボス１５Ａ・１５Ｂは前述の仮想中心線Ｐを
対称軸にして各々の中心が左右で対称に位置する。That is, in FIGS. 2 and 3, the front boss 15A
・Among 15B, the left male boss 15A is half case 1
It projects from the inner surface of a (lb) in a cylindrical shape higher than the lid mating surface of the outer peripheral wall 11, and its tip is formed in a tapered shape with an outwardly expanding tapered surface 17 on the inner surface. Further, the female boss 15B on the front right side is the male boss 1 of the other half case.
5A is formed into a cylindrical shape having a recessed hole 19 into which it can be tightly fitted, and its tip end surface is flush with the lid mating surface of the outer periphery W11. The centers of these bosses 15A and 15B are located symmetrically on the left and right with the virtual center line P as an axis of symmetry.

第２図および第４図において、後側のボス１６Ａ・１６
Ｂも前側のボス１５Ａ・１５Ｂと同様に仮想中心線Ｐを
対称軸にして各々の中心が左右で対称に位置するように
設けられており、その左側の雌ボス１６Ａが凹穴１９を
有する前方右側の雌ボス１５Ｂと実質的に同一形状に形
成され、右側の雄ボス１６Ｂがテーパ面１７を有する前
方左側の雄ボス１５Ａと実質的に同一形状に形成されて
いる。In FIGS. 2 and 4, rear bosses 16A and 16
Similar to the front bosses 15A and 15B, B is also provided so that its center is located symmetrically on the left and right with the virtual center line P as the axis of symmetry, and the female boss 16A on the left side is located on the front side with the recessed hole 19. The right female boss 15B is formed in substantially the same shape, and the right male boss 16B is formed in substantially the same shape as the front left male boss 15A having a tapered surface 17.

但し、上下のハーフケース１ａ・１ｂにおいて前側の雌
雄ポス１５Ａ・１５Ｂの凹凸嵌合精度は。However, in the upper and lower half cases 1a and 1b, the accuracy of the uneven fitting of the male and female posts 15A and 15B on the front side is as follows.

後側の雌雄ボス１６Ａ・１６Ｂの凹凸嵌合精度よりも緊
密に寸法設定されている。The dimensions are set more closely than the fitting accuracy of the concavity and convexity of the male and female bosses 16A and 16B on the rear side.

前側の雌ボス１５Ｂがある右側の隅部に矩形の小区画２
０Ａを設け、その内庭をコ字状にくり抜いて誤消去防止
片２１を形成し、第５図に示すごとく誤消去防止片２１
の基端内面に折り取りを容易にする溝２２が刻設しであ
る。この誤消去防止片２１に対応して左方の雄ボス１５
Ａがある区画の隅部に矩形の小区画２０Ｂを設け、その
内底全部を透設して誤消去防止片２１を折り取るための
操作窓２３が形成しである。There is a small rectangular section 2 in the right corner where the front female boss 15B is located.
0A is provided, and the inner court thereof is hollowed out in a U-shape to form an accidental erasure prevention piece 21, and the accidental erasure prevention piece 21 is formed as shown in FIG.
A groove 22 is cut into the inner surface of the proximal end to facilitate tearing off. Corresponding to this accidental erasure prevention piece 21, the left male boss 15
A rectangular small section 20B is provided at the corner of the section A, and the entire inner bottom thereof is transparent to form an operation window 23 for breaking off the erroneous erasure prevention piece 21.

第１図において、符号２５は各ハーフケース１ａ・１ｂ
の外面に形成したラベル貼着用の凹面であり、第２図に
おいて、符号２６はハーフケース１ａ（ｌｂ）を射出成
形する際のゲート位置を示す。In FIG. 1, reference numeral 25 indicates each half case 1a, 1b.
In FIG. 2, reference numeral 26 indicates the gate position when injection molding the half case 1a (lb).

次に組付は要領を説明すると、第２図の想像線で示すご
とく不織布ライナ８はその開口箇所がヘッド挿入窓４に
対応する状態でディスク収容室１２に配置し、全面的に
又は部分的に熱溶着、超音波溶着、あるいは接着するか
して付着する。Next, to explain the procedure for assembly, as shown by the imaginary line in FIG. It is attached by heat welding, ultrasonic welding, or gluing.

この状態で下側のハーフケース１ｂの内壁１３で囲まれ
たディスク収容室１２にディスク２を装着すると、その
ハブ６が駆動軸挿入窓３に一部嵌入するよう臨む。この
とき、内壁１３はディスク２の装着案内用として機能す
るとともに１組付はライン上でのガタ付きでディスク２
が大きく位置ずれすることをも接当規制する。When the disk 2 is mounted in the disk storage chamber 12 surrounded by the inner wall 13 of the lower half case 1b in this state, the hub 6 faces the drive shaft insertion window 3 so as to partially fit therein. At this time, the inner wall 13 functions as a guide for mounting the disc 2, and when one assembly is installed, the disc 2
It also prevents the contact from shifting significantly.

次いで不織布ライナ８を予め固定した上側のハーフケー
ス１ａを下側のハーフケースｌｂ上に蓋合わせ状に被せ
付ける。そして、まず前側で対をなす各ハーフケース１
ａ・１ｂの雌雄ボス１５Ａ・１５Ｂどうしを凹凸嵌合さ
せて位置決めを行い。Next, the upper half case 1a, to which the nonwoven fabric liner 8 has been fixed in advance, is placed over the lower half case lb in a lid-fitting manner. First, each half case 1 that forms a pair on the front side
Positioning is performed by fitting the male and female bosses 15A and 15B of a and 1b in a concave and convex manner.

引き続いて後側で対をなす各ハーフケース１ａ・１ｂの
雌雄ボス１６Ａ・１６Ｂどうしを嵌め込む。Subsequently, the female and male bosses 16A and 16B of each half case 1a and 1b forming a pair on the rear side are fitted into each other.

各ハーフケース１ａ・１ｂの前あるいは後側で対をなす
ボス１５Ａ・１５Ｂ・１６Ａ・１６Ｂはそれぞれ仮想中
心線Ｐに関して対称関係にあり、外周壁１１および内壁
１３なども同様の関係にあるので、全く同一形状のハー
フケース１ａ・１ｂを組み合わせてディスクケース１を
構成することができる。The bosses 15A, 15B, 16A, and 16B that form a pair on the front or rear side of each half case 1a, 1b are symmetrical with respect to the virtual center line P, and the outer peripheral wall 11, inner wall 13, etc. are also in a similar relationship. The disk case 1 can be constructed by combining half cases 1a and 1b having exactly the same shape.

後側のボス１６Ａ・１６Ｂの嵌合精度は、前側のボス１
５Ａ・１５Ｂの嵌合精度よりもルーズに設定してあり、
更に後側のボス１６Ａ・１６Ｂの凹凸関係が前側のそれ
とは左右逆に位置設定しであるため、ハーフケース１ａ
・１ｂの前後で組立干渉を生じることがなく１両者をス
ムーズにしかも正確に位置決めして重ね合わせることが
できる。The fitting accuracy of the rear bosses 16A and 16B is the same as that of the front boss 1.
The fitting accuracy is set looser than that of 5A and 15B,
Furthermore, since the unevenness of the bosses 16A and 16B on the rear side is set in the opposite left and right from that on the front side, the half case 1a
・There is no assembly interference between the front and rear of 1b, and both can be smoothly and accurately positioned and overlapped.

とくに前側のボス１５Ａ・１５Ｂどうしの嵌合は緊密に
なるよう設定しであるので、ヘッド挿入窓４が存在する
関係で特に問題となる両ハーフケース１ａ・１ｂの前部
での位置ずれを確実に規制できる。In particular, the bosses 15A and 15B on the front side are set to fit tightly together, so it is ensured that misalignment at the front of both half cases 1a and 1b, which is a particular problem due to the presence of the head insertion window 4, is ensured. can be regulated.

こうして９両ハーフケース１ａ・１ｂを重ね合わせたと
き、外周壁１１や内壁１３か完全に突き合わさる前に、
上ハーフケース１ａの雄ボス１５Ａ・１６Ｂの突端部が
下ハーフケース１ｂの雌ボス１５Ｂ・１６Ａの凹穴１９
の内底面に先当たりする。この状態から加圧下で各溶着
箇所を超音波溶接で一体結合する。この際、雌ボス１５
Ｂ・１６Ａの内底面に突き当たる雄ボス１５Ａ・１６Ｂ
の突端部は、内面にテーバ面１・７を有する先細り状に
形成しであるので、この突端部が溶けやすく溶着工程が
短時間で円滑に行なえる。しかも、この各雄ボス１５Ａ
・１６Ｂの先細り状突端部の熔は代の一部は、各雌ボス
１５Ｂ・１６Ａの突設基端側にも回り込み、溶着強度を
向上できる。In this way, when the nine half cases 1a and 1b are stacked on top of each other, before the outer peripheral wall 11 and inner wall 13 completely butt each other,
The protruding ends of the male bosses 15A and 16B of the upper half case 1a are connected to the recessed holes 19 of the female bosses 15B and 16A of the lower half case 1b.
It hits the inner base first. From this state, each weld location is integrally joined by ultrasonic welding under pressure. At this time, female boss 15
Male boss 15A/16B that hits the inner bottom of B/16A
Since the tip is formed in a tapered shape with tapered surfaces 1 and 7 on the inner surface, the tip can be melted easily and the welding process can be carried out smoothly in a short time. Moreover, each male boss 15A
A part of the welding margin of the tapered tip of 16B also wraps around the protruding base end of each female boss 15B and 16A, improving welding strength.

上記のようにして上下ハーフケース１ａ・１ｂを完全に
溶着した状態において、上下の各外周壁１１および内壁
１３の端面どうしが突き合わされて密着する。In the state where the upper and lower half cases 1a and 1b are completely welded together as described above, the end surfaces of the upper and lower outer peripheral walls 11 and inner walls 13 are butted against each other and are in close contact with each other.

なお、ホーンによる超音波溶接時に、溶着箇所から粉が
出るが、この粉は内壁１３で遮られてディスク収容室１
２に侵入せず、ドロップアウトなどの防止に有効である
。また、溶接箇所から外れた上下ハーフケース１ａ・１
ｂの蓋合わせ面の一部、具体的には外周壁１１の溶接箇
所の近傍部位に先当り部があると、該当部分でも溶着が
生じてパリが出る。そこで、外周壁１１は第６図に示す
ごとく内側を高くして外側を段落ち面２７に形成して溶
着バリを逃がし１両ハーフケース１ａ・１ｂが蓋合わせ
面で密着するようにした。図示例では段落ち面２７が外
周壁１１の左右および前方の三方周辺にわたって形成さ
れているとともに、後側辺ではボス１６Ａ・１６Ｂの近
傍部位にのみ形成されたものとなっているが、この段落
ち面２７は外周壁１１の各ボスに近い四隅部分に設ける
を以て必要かつ充分である。Note that during ultrasonic welding using a horn, powder comes out from the welded area, but this powder is blocked by the inner wall 13 and is not allowed to flow into the disk storage chamber 1.
2, and is effective in preventing dropouts. In addition, the upper and lower half cases 1a and 1 that have come off the welding point
If there is an abutment part in a part of the lid mating surface b, specifically in the vicinity of the welding part of the outer peripheral wall 11, welding will occur in that part as well, resulting in cracks. Therefore, as shown in FIG. 6, the outer circumferential wall 11 is made higher on the inside and a stepped surface 27 is formed on the outside to release welding burrs and allow the two half cases 1a and 1b to come into close contact with each other at the lid mating surfaces. In the illustrated example, the stepped surface 27 is formed around the left, right, and front sides of the outer peripheral wall 11, and is formed only in the vicinity of the bosses 16A and 16B on the rear side. It is necessary and sufficient to provide the falling surfaces 27 at the four corners of the outer peripheral wall 11 near each boss.

〔別実施例〕[Another example]

図示例では前側の雌雄ボス１５Ａ・１５Ｂの左右間距離
と、後側の雌雄ボス１６Ａ・１６Ｂの左右間距離とを違
えて、上下が同一形状のハーフケース１ａ・１ｂを誤っ
て前後向きを逆に締結することがないようにしたが、こ
の点は必ずしも限定されるものではない。In the illustrated example, the left-right distance between the front male and female bosses 15A and 15B is different from the left-right distance between the rear female and male bosses 16A and 16B, and the half cases 1a and 1b, which have the same top and bottom shapes, are mistakenly turned in the front and back directions. However, this point is not necessarily limited.

また、第８図に示すように後側のボス１６Ａ・１６Ｂに
おける凸と凹の関係配置が前側のボス１５Ａ・１５Ｂの
それと左右で同じになるようにしてもよい。つまり前後
で対をなすボス（１５Ａ・１５Ｂと１６Ａ・１６Ｂ）は
凹凸嵌合する関係にあれば形状や嵌合形態が異なるもの
であってもよい。Further, as shown in FIG. 8, the relationship between the convex and concave portions of the rear bosses 16A and 16B may be the same on the left and right sides as that of the front bosses 15A and 15B. In other words, the front and rear pairs of bosses (15A, 15B and 16A, 16B) may have different shapes and fitting forms as long as they are in a concave-convex fitting relationship.

また、第９図に示すごとく前側のボス１５Ａ・１５Ｂの
近傍にリブ状の位置決め突起２８と、これが係入する位
置決め溝２９とをそれぞれ形成し。Further, as shown in FIG. 9, rib-shaped positioning protrusions 28 and positioning grooves 29 into which the protrusions engage are formed near the front bosses 15A and 15B, respectively.

これら両部材２８・２９の凹凸嵌合で上下のハーフケー
ス１ａ・１ｂの特に前部の位置決めをより確実に行える
ようにしてもよい。By fitting these two members 28 and 29 into convexes and convexes, it is possible to more reliably position the upper and lower half cases 1a and 1b, especially the front parts.

なお１本発明ではディスク２が光ディスクであったり、
ヘッド挿入窓４を開閉するシャッタを備えたディスクカ
ートリッジなども通用対象としていることは言うまでも
ない。Note that in the present invention, the disc 2 may be an optical disc, or
Needless to say, disk cartridges equipped with shutters for opening and closing the head insertion window 4 are also applicable.

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

第１図ないし第７図は本発明に係るディスクカートリッ
ジの第１実施例を示しており。 第１図は分解斜視図。 第２図はディスクケースを構成するハーフケースの平面
図。 第３図は第２図におけるＡ−Ａ線断面図。 第４図は第２図におけるＢ−Ｂ線断面図。 第５図は第２図におけるＣ−Ｃ線断面図。 第６図は両ハーフケースを組付けた状態での部分拡大側
面図。 第７図はディスクカートリッジの第２図におけるＡ−Ａ
線に相当する位置での断面図である。 第８図は本発明の別実施例を示すハーフケースの平面図
である。 第９図は本発明の更に異なる別実施例を示す要部の平面
図である。 １・・・・・ディスクケース。 １ａ・１ｂ・・・・ハーフケース。 ２・・・・・ディスク。 ３・・・・・駆動軸挿入窓。 ４・・・・・ヘッド挿入窓。 １１・・・・外周壁。 １２・・・・ディスク収容室。 １３・・・・内壁。 １５Ａ・１５Ｂ・・・・・前側のボス。 １６Ａ・１６Ｂ・・・・・後側のボス。 １７・・・・テーバ面。 特　許　出　願　人　日立マクセル株式会社同　　　　
　ミツミ電機株式会社1 to 7 show a first embodiment of a disk cartridge according to the present invention. FIG. 1 is an exploded perspective view. FIG. 2 is a plan view of a half case that constitutes a disk case. FIG. 3 is a sectional view taken along line A-A in FIG. 2. FIG. 4 is a sectional view taken along line B-B in FIG. 2. FIG. 5 is a sectional view taken along the line CC in FIG. 2. FIG. 6 is a partially enlarged side view of both half cases assembled. Figure 7 shows A-A in Figure 2 of the disk cartridge.
FIG. 3 is a cross-sectional view at a position corresponding to the line. FIG. 8 is a plan view of a half case showing another embodiment of the present invention. FIG. 9 is a plan view of essential parts showing still another embodiment of the present invention. 1... Disc case. 1a, 1b...Half case. 2...Disk. 3...Drive shaft insertion window. 4...Head insertion window. 11...Outer peripheral wall. 12... Disk storage chamber. 13...Inner wall. 15A/15B...Front boss. 16A/16B...Boss on the back side. 17...Theban surface. Patent applicant Hitachi Maxell Co., Ltd.
Mitsumi Electric Co., Ltd.

Claims (1)

【特許請求の範囲】[Claims] （１）ディスク２を内蔵するディスクケース１が、ほぼ
中央部位に駆動軸挿入窓３を、これの前方にヘッド挿入
窓４をそれぞれ有すること、 ディスクケース１が、前方の左右２箇所および後方の左
右２箇所で蓋合わせ状に締結される上下のハーフケース
１ａ・１ｂからなること、 両ハーフケース１ａ・１ｂの前方左右の各締結箇所にお
ける雌雄ボス１５Ａ・１５Ｂの凹凸嵌合精度が、後方左
右の各締結箇所における雌雄ボス１６Ａ・１６Ｂの凹凸
嵌合精度よりも緊密に寸法設定されていることを特徴と
するディスクカートリッジ。(1) The disk case 1 that houses the disk 2 has a drive shaft insertion window 3 approximately in the center and a head insertion window 4 in front of this. Consisting of upper and lower half cases 1a and 1b that are fastened together in two places on the left and right, the fitting accuracy of the female and male bosses 15A and 15B at the front left and right fastening points of both half cases 1a and 1b is A disk cartridge characterized in that dimensions are set more closely than the fitting accuracy of the concaves and convexities of the male and female bosses 16A and 16B at each fastening location.