JPH0740419B2 - Disco Cartridge - Google Patents
Disco CartridgeInfo
- Publication number
- JPH0740419B2 JPH0740419B2 JP60096599A JP9659985A JPH0740419B2 JP H0740419 B2 JPH0740419 B2 JP H0740419B2 JP 60096599 A JP60096599 A JP 60096599A JP 9659985 A JP9659985 A JP 9659985A JP H0740419 B2 JPH0740419 B2 JP H0740419B2
- Authority
- JP
- Japan
- Prior art keywords
- plate portion
- shutter
- face plate
- cartridge
- cartridge case
- 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.)
- Expired - Fee Related
Links
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は例えば磁気デイスクカートリツジ，光デイスク
カートリツジ，光−磁気デイスクカートリツジなどのデ
イスクカートリツジに係り、特にヘツドアクセス口の開
閉を行なうシヤツタを備えたデイスクカートリツジに関
するものである。Description: TECHNICAL FIELD The present invention relates to a disk cartridge such as a magnetic disk cartridge, an optical disk cartridge, and an optical-magnetic disk cartridge, and in particular, opens and closes a head access port. The present invention relates to a disk cartridge having a shutter.
第12図は従来の磁気デイスクカートリツジの分解斜視
図、第13図はその磁気デイスクカートリツジの一部拡大
断面図である。FIG. 12 is an exploded perspective view of a conventional magnetic disc cartridge, and FIG. 13 is a partially enlarged sectional view of the magnetic disc cartridge.
磁気デイスクカートリツジは、硬質合成樹脂で成形され
たカートリツジケース51と、その中に回転自在に収納さ
れた磁気デイスク52と、前記カートリツジケース51に摺
動可能に支持されたシヤツタ53とから主に構成されてい
る。The magnetic disk cartridge is composed of a cartridge case 51 formed of a hard synthetic resin, a magnetic disk 52 rotatably housed therein, and a shutter 53 slidably supported by the cartridge case 51. It is mainly composed.
カートリツジケース51のほぼ中央には円形の開口54が形
成され、それの近くにヘツド挿入口55が設けられてい
る。ヘツド挿入口55の上を前記シヤツタ53が摺動するた
めにヘツド挿入口55の付近の上面が若干低くなつて凹部
56が形成され、さらにこの凹部56の前面近くにはシヤツ
タ53の摺動方向に沿つて延びたガイド溝57が設けられて
いる。A circular opening 54 is formed substantially in the center of the cartridge case 51, and a head insertion port 55 is provided in the vicinity thereof. Since the shutter 53 slides on the head insertion port 55, the upper surface in the vicinity of the head insertion port 55 is slightly lowered and the recess is formed.
56 is formed, and a guide groove 57 extending along the sliding direction of the shutter 53 is provided near the front surface of the recess 56.
シヤツタ53は例えばステンレス鋼板などの金属板からな
り、側面形状がコ字をして、ヘツド挿入口55とほぼ同じ
大きさをした開口部58と、それの隣にヘツド挿入口55を
閉塞する閉塞部61が形成され、また切り起こしによつて
２つの突片59が下方に向いて突設されている。The shutter 53 is made of, for example, a metal plate such as a stainless steel plate, has a U-shaped side surface, and has an opening 58 having substantially the same size as the head insertion port 55, and a block that closes the head insertion port 55 next to it. A portion 61 is formed, and two protruding pieces 59 are provided so as to protrude downward by cutting and raising.
この突片59は第13図に示すようにカートリツジケース51
の前記ガイド溝57内に嵌入される訳であるが、シヤツタ
53が金属板から作られ、しかも突片59の突出寸法が短い
ことから、カートリツジケース51へシヤツタ53を組込む
際に突片59の方を弾性変形させることはできない。その
ためカートリツジケース51におけるガイド溝57の前方に
前記突片59に対応させて薄肉部60を２個所設け、カート
リツジケース51へシヤツタ53を組込む際、突片59で薄肉
部60を弾性変形させながら薄肉部60上を乗り越えてガイ
ド溝57に嵌入させる方法を採用していた。As shown in FIG. 13, the protrusion 59 is provided with the cartridge case 51.
It is fitted in the guide groove 57 of the
Since 53 is made of a metal plate and the projecting piece 59 has a short projecting dimension, the projecting piece 59 cannot be elastically deformed when the shutter 53 is assembled into the cartridge case 51. Therefore, two thin portions 60 are provided in front of the guide groove 57 in the cartridge case 51 so as to correspond to the protrusions 59, and when the shutter 53 is assembled into the cartridge case 51, the protrusions 59 elastically deform the thin portion 60. However, the method of getting over the thin portion 60 and fitting it into the guide groove 57 was adopted.
収納した磁気デイスク52が外力によつてわん曲したりし
ない様に保護するために、カートリツジケース51は硬質
合成樹脂で成形されている。そのため前述のように薄肉
部60を形成しても、材質的に弾性に富んでいないから、
薄肉部60の弾性による撓み量を余り大きくとれない。そ
のためシヤツタ53における突片59の突出寸法を長くする
と、カートリツジケース51へシヤツタ53の組込みが困難
となり、一方、突片59の突出寸法を短くするとカートリ
ツジケース51への組込みは容易になるが、シヤツタ53が
カートリツジケース51から外れ易くなるなどの問題があ
り、突片59の寸法管理を厳密に行なう必要がある。In order to protect the stored magnetic disk 52 from being bent by an external force, the cartridge storage case 51 is molded of hard synthetic resin. Therefore, even if the thin portion 60 is formed as described above, the material is not elastic enough,
The amount of bending due to the elasticity of the thin portion 60 cannot be increased so much. Therefore, if the projecting dimension of the projecting piece 59 in the shutter 53 is lengthened, it becomes difficult to assemble the shutter 53 in the cartridge case 51, while if the projecting dimension of the projecting piece 59 is shortened, the assembly in the cartridge case 51 becomes easy. However, there is a problem that the shutter 53 is easily detached from the cartridge case 51, and it is necessary to strictly control the dimensions of the projecting piece 59.
本発明の目的は、このような従来技術の欠点を解消し、
組立て作業性の良いデイスクカートリツジを提供するに
ある。The object of the present invention is to eliminate such drawbacks of the prior art,
The purpose is to provide a disk cartridge which is easy to assemble.
前述の目的を達成するため、本発明は、デイスクを回転
可能に収納したカートリツジケースと、そのカートリツ
ジケースの少なくともヘツドアクセス口を開閉するため
のシヤツタとを備え、前記カートリツジケースの前方に
シヤツタの摺動を案内するためのガイド溝を形成し、こ
のガイド溝にシヤツタの突部を係合してなるデイスクカ
ートリツジにおいて、 前記シヤツタが弾性変形可能な合成樹脂で形成され、第
１面板部と、その第１面板部と対向する第２面板部と、
第１面板部ならびに第２面板部の端部どうしを連結する
連結部とを有し、側面形状がコ字形をして、前記第１面
板部ならびに第２面板部のいずれか一方の内面に、先端
部側が連結板部側に向くように傾斜した前記突部を設
け、その突部の面板部との付根部から面板部と連結板部
との接合角部まで延びた透孔部を設けて、前記カートリ
ツジケースにシヤツタを装着するときに前記突部が乗り
越えるカートリツジケースの前記ガイド溝の前部に薄肉
部を設け、その薄肉部の上シヤツタ乗越面側に突部と同
じ方向に傾斜した傾斜面が形成され、かつ前記薄肉部の
下方に薄肉部の弾性変形を許容する空間部が設けられて
いることを特徴とするものである。In order to achieve the above-mentioned object, the present invention comprises a cartridge case that rotatably stores a disk, and a shutter for opening and closing at least a head access port of the cartridge case, and the cartridge case is provided in front of the cartridge case. In a disk cartridge having a guide groove for guiding the sliding of the shutter and engaging a projection of the shutter with the guide groove, the shutter is formed of an elastically deformable synthetic resin, and the first face plate And a second face plate portion facing the first face plate portion,
A first side plate part and a connecting part that connects the end parts of the second side plate part to each other, and the side surface has a U-shape, and on one of the inner faces of the first side plate part and the second side plate part, The protrusion is provided so that the tip side faces the connecting plate portion side, and the through hole portion extending from the root portion of the protruding portion with the face plate portion to the joint corner portion of the face plate portion and the connecting plate portion is provided. , A thin-walled portion is provided in the front part of the guide groove of the cartridge case where the projection rides over when the shutter is mounted on the cartridge case, and the thin-walled portion inclines in the same direction as the projection on the upper surface of the shatter-riding surface. The inclined surface is formed, and a space portion that allows elastic deformation of the thin portion is provided below the thin portion.
次に本発明の各実施例について図とともに説明する。 Next, each embodiment of the present invention will be described with reference to the drawings.
第１図ないし第11図は本発明の第１実施例に係る磁気デ
イスクカートリツジを説明するためのもので、第１図は
そのデイスクカートリツジの分解斜視図、第２図はカー
トリツジケースの一部平面図、第３図は第２図ニ−ニ線
上の拡大断面図、第４図は第２図ホ−ホ線上の拡大断面
図、第５図はシヤツタの平面図、第６図は第５図イ−イ
線上の断面図、第７図はデイスクカートリツジの非使用
時の状態を示す一部平面図、第８図は第５図ロ−ロ線上
の拡大断面図、第９図はカートリツジケースへシヤツタ
を組込む状態を示す一部拡大断面図、第10図は第７図ハ
−ハ線上の拡大断面図、第11図はシヤツタの成形金型の
構造を示す一部拡大断面図である。1 to 11 are for explaining a magnetic disk cartridge according to a first embodiment of the present invention. FIG. 1 is an exploded perspective view of the disk cartridge, and FIG. 2 is a cartridge case. Partial plan view, FIG. 3 is an enlarged cross-sectional view taken along the line Ni-ni of FIG. 2, FIG. 4 is an enlarged cross-sectional view taken along the line Ho-ho of FIG. 2, FIG. 5 is a plan view of the shutter, and FIG. FIG. 5 is a sectional view taken along the line EE, FIG. 7 is a partial plan view showing a state when the disk cartridge is not used, and FIG. 8 is an enlarged sectional view taken along the line ROLL and RO of FIG. Is a partially enlarged cross-sectional view showing a state in which the shutter is assembled in the cartridge case, FIG. 10 is an enlarged cross-sectional view taken along the line of FIG. 7, and FIG. 11 is a partially enlarged cross-sectional view showing the structure of the molding die for the shutter. It is a figure.
磁気デイスクカートリツジは、カートリツジケース１
と、その中に回転自在に収納された磁気デイスク２と、
カートリツジケースに摺動可能に支持されたシヤツタ３
とから主に構成されている。Magnetic Disc Cartridge is a Cartridge Case 1
And a magnetic disk 2 rotatably housed in it,
A shutter 3 slidably supported by the cart case
It is mainly composed of and.
カートリツジケース１は第１ハーフケース1aと第２ハー
フケース1bとから構成され、これらは例えばABS樹脂な
どの硬質合成樹脂で成形されている。The cartridge case 1 is composed of a first half case 1a and a second half case 1b, which are molded of a hard synthetic resin such as ABS resin.
カートリツジケース１のほぼ中央には回転駆動軸挿入用
の開口４が形成され、それの近くに長方形のヘツド挿入
口５が設けられている。第１ハーフケース1aならびに第
２ハーフケース1bの前面付近には、前記シヤツタ３の摺
動範囲を規制するために若干低くなつた凹部６がそれぞ
れ形成され（第８図参照）、この凹部６の中間位置に前
記ヘツド挿入口５が開設されてる。第１ハーフケース1a
の前面近くには、シヤツタ３の摺動方向に沿つて延びた
ガイド溝７が形成されている（第２図、第８図ないし第
10図参照）。An opening 4 for inserting the rotary drive shaft is formed at substantially the center of the cart case 1, and a rectangular head insertion opening 5 is provided near the opening 4. In the vicinity of the front surfaces of the first half case 1a and the second half case 1b, slightly recessed recesses 6 are formed in order to restrict the sliding range of the shutter 3 (see FIG. 8). The head insertion port 5 is opened at an intermediate position. First half case 1a
A guide groove 7 extending along the sliding direction of the shutter 3 is formed near the front surface of the shutter (see FIGS. 2, 8 to 8).
(See Figure 10).
なお、第１ハーフケース1aのガイド溝７を形成する前方
端部には第８図、第９図に示すように弾性変形する薄肉
部21が形成されており、後述するようにこのハーフケー
ス1a上にシヤツタ３を組込むときに、弾性変形してシヤ
ツタ３の組込みを容易にする。A thin portion 21 that elastically deforms is formed at the front end portion forming the guide groove 7 of the first half case 1a as shown in FIG. 8 and FIG. When the shutter 3 is assembled on top, it is elastically deformed to facilitate the incorporation of the shutter 3.
第１図に示す如く磁気デイスク２の中央部には金属製の
ハブ８が連結されて、上ハーフケース1aの開口４内に配
置されている。As shown in FIG. 1, a hub 8 made of metal is connected to the central portion of the magnetic disk 2 and arranged in the opening 4 of the upper half case 1a.
シヤツタ３は、例えばポリアセタール樹脂やポリアミド
樹脂など前記カートリツジケース１よりも若干軟質で弾
性変形する合成樹脂で成形されている。シヤツタ３は第
１面板部3aと、それと対向するように配置された第２面
板部3bと、両面板部3a,3bの前面側端部を連結する連結
板部3cとから構成され、側面形状がコ字形をしている。
第１面板部3aならびに第２面板部3bには、前記ヘツド挿
入口５とはほぼ同じ大きさを有する長方形の開口部９
と、ヘツド挿入口５を閉塞する閉塞部10とがそれぞれ対
向するように並設されている。The shutter 3 is formed of a synthetic resin such as polyacetal resin or polyamide resin, which is slightly softer than the cartridge case 1 and elastically deformable. The shutter 3 includes a first face plate portion 3a, a second face plate portion 3b arranged so as to face the first face plate portion 3a, and a connecting plate portion 3c for connecting the front end portions of the double-sided plate portions 3a, 3b. Has a U shape.
The first face plate portion 3a and the second face plate portion 3b have a rectangular opening 9 having substantially the same size as the head insertion port 5.
And a closing portion 10 for closing the head insertion port 5 are arranged in parallel so as to face each other.
前記第１面板部3aで前面（連結板部3c）近傍には、シヤ
ツタ３の摺動方向に沿つて所定の間隔をおいて２つの突
片11が第２面板部3b側に向いて突設されている。この突
片11は第８図ないし第10図に示すように、第１面板部3a
に対して垂直に延びるのではなく、それの先端（下端）
側が連結板部3c側に向くように、換言すればカートリツ
ジケース１の挿入方向Ｘ（第９図参照）の下流側に向く
ように傾斜している。In the vicinity of the front surface (connecting plate portion 3c) of the first face plate portion 3a, two projecting pieces 11 project toward the second face plate portion 3b side at a predetermined interval along the sliding direction of the shutter 3. Has been done. As shown in FIGS. 8 to 10, the protrusion 11 has a first face plate portion 3a.
The tip (bottom end) of it, rather than extending perpendicular to
The side is inclined so as to face the connecting plate portion 3c side, in other words, the downstream side in the insertion direction X (see FIG. 9) of the cartridge case 1.
なおこの場合、第８図に示す面板部3aの内面と突片11の
内面とのなす角度θは95〜120度、好ましくは100〜110
度の範囲で、傾斜角θが大きいほどハーフケース1aへの
シヤツタ３の組み込み作業が容易となる。しかし、傾斜
角θが大きくなりすぎるとガイド溝７との係合が不安定
となり易いので、傾斜角θは上記の範囲が推奨される。In this case, the angle θ between the inner surface of the face plate portion 3a and the inner surface of the protruding piece 11 shown in FIG. 8 is 95 to 120 degrees, preferably 100 to 110.
Within a range of degrees, the larger the inclination angle θ, the easier the work of assembling the shutter 3 into the half case 1a. However, if the inclination angle θ is too large, the engagement with the guide groove 7 is likely to be unstable. Therefore, the above-described range of the inclination angle θ is recommended.
また突片11の厚さａはシヤツタ３の肉厚0.375mmに対し
0.3mmと、シヤツタ３の肉厚より薄くすれば弾性変形し
易いため好ましい。Also, the thickness a of the projection 11 is 0.375 mm for the wall thickness of the shutter 3
It is preferable that the thickness is 0.3 mm, which is thinner than the thickness of the shutter 3 because elastic deformation is likely to occur.
さらに突片11の長さｌも長いほど弾性変形が容易とな
る。例えばシヤツタ３の内側寸法Ｌ＝2.8mmに対しｌ＝
0.7mmとすればよい。Further, the longer the length l of the protrusion 11 is, the easier the elastic deformation is. For example, for the inner dimension L of the shutter 3 = 2.8 mm, l =
It should be 0.7 mm.
この突片11の面板部3aとの付根部から面板部3aと連結板
部3cとの接合角部までの間、換言すればカートリツジケ
ース１の挿入方向Ｘに沿つて突片11と同一直線上に、突
片11の幅とほぼ同じ幅寸法を有する四角形の透孔部12が
穿設されている。Between the root of the projecting piece 11 with the face plate 3a and the joint corner of the face plate 3a and the connecting plate 3c, in other words, along the insertion direction X of the cartridge case 1, the same straight line as the projecting piece 11 is provided. A square through hole 12 having a width dimension substantially the same as the width of the projecting piece 11 is formed on the line.
また連結部3cの内面で連結部3cの高さ方向のほぼ中間位
置にバネ掛け突部13が形成され、第７図に示すようにこ
のバネ掛け突部13とカートリツジケース１の所定位置と
の間にはつる巻きバネ14が介在され、これのバネ弾性に
よりシヤツタ３はヘツド挿入口５を閉じる方向に弾性付
勢されている。Further, a spring hooking protrusion 13 is formed on the inner surface of the connecting portion 3c at a substantially intermediate position in the height direction of the connecting portion 3c. As shown in FIG. A spiral spring 14 is interposed between them, and the spring elasticity of the spiral spring 14 elastically biases the shutter 3 in a direction of closing the head insertion port 5.
第11図は、前述したようにシヤツタの成形金型の構造を
示す一部拡大断面図である。同図に示すようにシヤツタ
３の内面を形成する固定金型コア17と第１面板部3aおよ
び第２面板部3bの外面を形成する移動金型のサイドコア
15と16、および連結板部3cの外面を形成する移動金型の
上型38とから主に構成されている。これらの金型によつ
て、第１面板部3a,突片11,第２面板部3b,連結板部3cを
形成する空間19,20,39がそれぞれ形成されている。これ
らの空間19,20,39に減圧下で溶融樹脂を射出し、冷却し
たのち上型18はＸ方向、サイドコア15と16はＹ方向に移
動することによつて成形されたシヤツタ３が金型から取
り出し可能となる。なお40は分割面である。シヤツタ３
を成形金型から取り出すと、第６図に示すように第１面
板部3aと第２面板部3bの自由端（反連結板部3c）側は互
いに弾接している。FIG. 11 is a partially enlarged sectional view showing the structure of the molding die for the shutter as described above. As shown in the figure, a fixed mold core 17 forming an inner surface of the shutter 3 and a side core of a moving mold forming outer surfaces of the first face plate portion 3a and the second face plate portion 3b.
It is mainly composed of 15 and 16, and the upper die 38 of the moving die forming the outer surface of the connecting plate portion 3c. With these molds, the spaces 19, 20, 39 for forming the first face plate portion 3a, the protruding piece 11, the second face plate portion 3b, and the connecting plate portion 3c are formed, respectively. Molten resin is injected into these spaces 19, 20 and 39 under reduced pressure, and after cooling, the upper mold 18 moves in the X direction, and the side cores 15 and 16 move in the Y direction. Can be taken out from. In addition, 40 is a division surface. Shattered 3
When is removed from the molding die, as shown in FIG. 6, the first surface plate portion 3a and the second surface plate portion 3b are in elastic contact with each other on the free end (anti-connecting plate portion 3c) side.
従つてシヤツタ３をカートリツジケース１に組込む際に
は、第１図に示すように治具（図示せず）によりシヤツ
タ３の第１面板部3aと第２面板部3bの自由端側を開いた
状態でカートリツジケース１を挿入する。第８図および
第９図に示すように第１ハーフ1aのガイド溝７の前方で
シヤツタ３の突片11と対応する個所には薄肉部21がそれ
ぞれ形成され、それの角部には傾斜面22が設けられ、薄
肉部21の下方には薄肉部21の弾性変形を許容する空間部
23が形成されている。第９図に示すようにカートリツジ
ケース１の前記傾斜図22側を先にしてシヤツタ３内に押
し込むと、シヤツタ３の突片11は傾斜面22上に乗り上
げ、シヤツタ３の透孔部12の周辺の第１面板部3aと連結
板部3cとの接合角部近傍が集中的にかつ弾性的に押し広
げられるように変形し、突片11が薄肉部21上を乗り越え
ガイド溝７に嵌入する。Therefore, when the shutter 3 is assembled in the cartridge case 1, the free end sides of the first face plate portion 3a and the second face plate portion 3b of the shutter 3 are opened by a jig (not shown) as shown in FIG. Insert the cartridge case 1 in the closed state. As shown in FIGS. 8 and 9, thin-walled portions 21 are formed in front of the guide groove 7 of the first half 1a at the positions corresponding to the projecting pieces 11 of the shutter 3, and the inclined portions are formed at the corners thereof. 22 is provided, and below the thin-walled portion 21, a space portion that allows elastic deformation of the thin-walled portion 21.
23 are formed. As shown in FIG. 9, when the cartridge case 1 is pushed into the shatter 3 with the side of the slanted figure 22 first, the projection 11 of the shatter 3 rides on the slanted surface 22 and the through hole 12 of the shatter 3 is inserted. The vicinity of the joining corner portion between the first face plate portion 3a and the connecting plate portion 3c around the periphery is deformed so as to be spread widely and elastically, and the projecting piece 11 rides over the thin portion 21 and fits into the guide groove 7. .
このように接合角部の一部が弾性的に変形するには、シ
ヤツタ３のカートリツジケース１の挿入方向に沿つて突
片11と同一直線上に透孔部12を設ければ、透孔部12に隣
接する接合角部の曲げ強度が小さくなり、この部分での
弾性変形が容易となる。このような作用は、透孔部12が
突片11より連結板部3c側でカートリツジケース１の挿入
方向に沿つて突片11と同一直線上の接合角部近傍に形成
されておればよい。透孔部12が接合角部に近接するほ
ど、また透孔部12の面積が広いほど、特にカートリツジ
ケース１の挿入方向に沿つて長く細形成されるほど、シ
ヤツタ３の小さい押し込み力で接合角部が変形し好まし
い。In order to elastically deform a part of the joining corner portion, if the through hole portion 12 is provided on the same straight line as the projecting piece 11 along the insertion direction of the cartridge case 1 of the shutter 3, the through hole portion can be formed. The bending strength of the joint corner portion adjacent to the portion 12 becomes small, and the elastic deformation at this portion becomes easy. Such an action is sufficient if the through hole portion 12 is formed near the joint corner portion on the same straight line as the protruding piece 11 along the insertion direction of the cartridge case 1 on the side of the connecting plate portion 3c from the protruding piece 11. . The closer the through hole portion 12 is to the joining corner portion, the larger the area of the through hole portion 12 is, and the longer the thin portion is formed along the insertion direction of the cartridge case 1, the smaller the pushing force of the shutter 3. The corner portion is deformed, which is preferable.
特にシヤツタ３が合成樹脂で形成されているときは、接
合角部の変形量が大きくなるので好適である。In particular, when the shutter 3 is made of synthetic resin, the amount of deformation of the joint corner portion becomes large, which is preferable.
また突片11が上述のように連結板部3c側に傾斜している
ときには、接合角部の変形量を小さくすることが可能と
なり、その結果透孔部12も小さくすることが可能とな
る。この実施例のように、突片11がカートリツジケース
１の挿入方向Ｘの下流側に向くように傾斜しておれば、
突片11が弾性変形するとともに、薄肉部21の下方に空間
部23が形成されているから薄肉部21の方も弾性変形し
て、突片11が薄肉部21上を乗り越えて容易にガイド溝７
内に挿入される。Further, when the projecting piece 11 is inclined toward the connecting plate portion 3c as described above, it is possible to reduce the deformation amount of the joining corner portion, and as a result, it is possible to reduce the through hole portion 12 as well. If the projecting piece 11 is inclined so as to face the downstream side in the insertion direction X of the cartridge case 1 as in this embodiment,
Since the projection 11 is elastically deformed and the space 23 is formed below the thin portion 21, the thin portion 21 is also elastically deformed, and the projection 11 can easily pass over the thin portion 21 to easily form the guide groove. 7
Inserted inside.
なお、第８図ならびに第10図に示すように、突片11が一
旦ガイド溝７に嵌入した後、シヤツタ３がカートリツジ
ケース１から抜けようとした場合、薄肉部21は元の状態
に戻っているから突片11の先端部がガイド溝７の内壁7a
に突き当たるが、この実施例のように突片11が連結板部
3c側に向けて傾斜していると、それが支柱的な機能を果
たしてシヤツタ３の外れようとする力を受け止めるか
ら、シヤツタ３の脱落が有効に防止できる。As shown in FIG. 8 and FIG. 10, when the projecting piece 11 is once fitted into the guide groove 7 and then the shutter 3 tries to come out of the cartridge case 1, the thin portion 21 returns to its original state. Therefore, the tip of the protruding piece 11 is the inner wall 7a of the guide groove 7.
However, as in this embodiment, the protruding piece 11 is connected to the connecting plate portion.
If it inclines toward the 3c side, it acts as a pillar and receives the force of the shutter 3 trying to come off, so that the shutter 3 can be effectively prevented from falling off.
この実施例のようにシヤツタ全体をプラスチツクで形成
すると、従来の金属製シヤツタに比して軽量化を図るこ
とが可能となり、デイスクカートリツジそのものの軽量
化が図れるだけでなく、デイスクカートリツジを誤つて
床に落下するなど激しい衝撃が与えられると、金属製シ
ヤツタではその自重でカートリツジケースから脱却する
ことがあるが、プラスチツク製シヤツタは自重が軽いた
めカートリツジケースからの脱却を防止することが可能
である。When the entire shatter is made of plastic as in this embodiment, it is possible to reduce the weight as compared with the conventional metal shatter, and not only the weight of the disk cartridge can be reduced, but the disk cartridge can be mistaken. However, if the metal shatter gets out of the cart shroud case due to its own weight when it is severely impacted by falling onto the floor, the plastic shatter has a light weight so that it can be prevented from coming out of the cart shred case. It is possible.
前記実施例ではシヤツタ３はヘツド挿入口５のみの開閉
を行なう場合について説明したが、ヘツド挿入口５とハ
ブ８が挿入される開口４の両方をともに開閉するような
シヤツタにすることもできる。In the above-described embodiment, the case where the shutter 3 opens and closes only the head insertion port 5 has been described, but it is also possible to make a shutter that opens and closes both the head insertion port 5 and the opening 4 into which the hub 8 is inserted.
また前記実施例では磁気デイスクカートリツジの実施例
について説明したが、本発明はこれに限定されることな
く、例えば光デイスク，光−磁気デイスクなど他のデイ
スクカートリツジにも適用可能である。Further, in the above-mentioned embodiment, the embodiment of the magnetic disk cartridge was explained, but the present invention is not limited to this, and can be applied to other disk cartridges such as an optical disk and an optical-magnetic disk.
本発明は前述のように、シヤツタが弾性変形可能な合成
樹脂で成形され、第１面板部ならびに第２面板部のいず
れか一方の面板部の内面に突部を設け、その面板部の内
面と突部の内面とのなす角度θが鈍角になっており、突
部の付根部から面板部と連結板部との接合角部まで延び
た透孔部を形成し、カートリツジケースにシヤツタを装
着するときに突部が乗り越える薄肉部を設け、その薄肉
部のシヤツタ乗越面側に突部の内面と同じ方向に傾斜し
た傾斜面が形成され、かつ前記薄肉部の下方に薄肉部の
弾性変形を許容する空間部を設けることにより、シヤツ
タにカートリツジケースの端部を挿入する際に、シヤツ
タの角部に無理な応力が集中しないから、シヤツタとカ
ートリツジケースの組込みが容易になり、作業性の改善
が図れる。According to the present invention, as described above, the shatter is formed of an elastically deformable synthetic resin, and a protrusion is provided on the inner surface of one of the first face plate portion and the second face plate portion, and the inner face of the face plate portion is The angle θ formed by the inner surface of the protrusion is an obtuse angle, and a through hole extending from the root of the protrusion to the joint corner between the face plate and the connecting plate is formed, and a cartridge is attached to the cartridge case. A thin portion over which the protrusion rides is provided, and an inclined surface that is inclined in the same direction as the inner surface of the protrusion is formed on the shutter riding surface of the thin portion, and elastic deformation of the thin portion is formed below the thin portion. By providing an allowable space, when inserting the end of the cartridge case into the shutter, excessive stress is not concentrated at the corners of the shutter, so it is easy to assemble the cartridge and the cartridge case, and workability is improved. Can be improved.
第１図ないし第11図は本発明の第１実施例に係る磁気デ
イスクカートリツジを説明するためのもので、第１図は
そのデイスクカートリツジの分解斜視図、第２図はカー
トリツジケースの一部平面図、第３図は第２図ニ−ニ線
上の拡大断面図、第４図は第２図ホ−ホ線上の拡大断面
図、第５図はシヤツタの平面図、第６図は第５図イ−イ
線上の断面図、第７図はデイスクカートリツジの非使用
時の状態を示す一部平面図、第８図は第７図ロ−ロ線上
の拡大断面図、第９図はカートリツジケースへシヤツタ
を組込む状態を示す一部拡大断面図、第10図は第７図ハ
−ハ線上の拡大断面図、第11図はシヤツタの成形金型の
構造を示す一部拡大断面図である。 第12図は従来の磁気デイスクカートリツジの分解斜視
図、図13はその磁気デイスクカートリツジの一部拡大断
面図である。 １……カートリツジケース、２……磁気デイスク、３…
…シヤツタ、3a……第１面板部、3b……第２面板部、3c
……連結板部、５……ヘツド挿入口、７……ガイド溝、
９……開口部、10……閉塞部、11……突片、12……透孔
部、21……薄肉部、22……傾斜面、23……空間部、θ…
…面板部の内面と突片の内面とのなす角度、Ｘ……カー
トリツジケース挿入方向。1 to 11 are for explaining a magnetic disk cartridge according to a first embodiment of the present invention. FIG. 1 is an exploded perspective view of the disk cartridge, and FIG. 2 is a cartridge case. Partial plan view, FIG. 3 is an enlarged cross-sectional view taken along the line Ni-ni of FIG. 2, FIG. 4 is an enlarged cross-sectional view taken along the line Ho-ho of FIG. 2, FIG. 5 is a plan view of the shutter, and FIG. FIG. 5 is a sectional view taken along the line EE, FIG. 7 is a partial plan view showing a state in which the disk cartridge is not used, and FIG. 8 is an enlarged sectional view taken along the line ROLL and RO of FIG. Is a partially enlarged cross-sectional view showing a state in which the shutter is assembled in the cartridge case, FIG. 10 is an enlarged cross-sectional view taken along the line of FIG. 7, and FIG. 11 is a partially enlarged cross-sectional view showing the structure of the molding die for the shutter. It is a figure. FIG. 12 is an exploded perspective view of a conventional magnetic disk cartridge, and FIG. 13 is a partially enlarged sectional view of the magnetic disk cartridge. 1 ... Cartridge case, 2 ... Magnetic disk, 3 ...
... Shutter, 3a ... First face plate part, 3b ... Second face plate part, 3c
...... Connecting plate, 5 ...... Head insertion port, 7 ...... Guide groove,
9 ... Opening part, 10 ... Closure part, 11 ... Projection piece, 12 ... Through hole part, 21 ... Thin part, 22 ... Inclined surface, 23 ... Space part, θ ...
… An angle formed by the inner surface of the face plate and the inner surface of the protrusion, X …… The insertion direction of the cartridge case.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭60−231985（ＪＰ，Ａ) 特開 昭61−74187（ＪＰ，Ａ) 特開 昭61−82395（ＪＰ，Ａ) 実開 昭57−38388（ＪＰ，Ｕ) 実開 昭59−138062（ＪＰ，Ｕ) ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-60-231985 (JP, A) JP-A-61-74187 (JP, A) JP-A-61-82395 (JP, A) Actual development Sho-57- 38388 (JP, U) Actual development Sho 59-138062 (JP, U)
Claims (2)
ジケースと、そのカートリツジケースの少なくともヘツ
ドアクセス口を開閉するためのシヤツタとを備え、前記
カートリツジケースの前方にシヤツタの摺動を案内する
ためのガイド溝を形成し、このガイド溝にシヤツタの突
部を係合してなるデイスクカートリツジにおいて、 前記シヤツタが弾性変形可能な合成樹脂で成形され、前
記ヘツドアクセス口を開閉する第１面板部と、その第１
面板部と対向するように配置されて前記ヘツドアクセス
口を開閉する第２面板部と、第１面板部ならびに第２面
板部の端部どうしを連結する連結板部とを有し、側面形
状がコ字形をして、 前記第１面板部ならびに第２面板部のいずれか一方の面
板部の内面に前記突部を設け、その面板部の内面と突部
の内面とのなす角度θが鈍角になっており、 前記突部の面板部との付根部から面板部と連結板部との
接合角部まで延びた透孔部を設けて、 前記カートリツジケースにシヤツタを装着するときに前
記突部が乗り越えるカートリツジケースの前記ガイド溝
の前部に薄肉部を設け、その薄肉部のシヤツタ乗越面側
に突部の内面と同じ方向に傾斜した傾斜面が形成され、
かつ前記薄肉部の下方に薄肉部の弾性変形を許容する空
間部が設けられていることを特徴とするデイスクカート
リツジ。1. A cartridge case that rotatably accommodates a disk, and a shutter for opening and closing at least a head access port of the cartridge case, and guides the sliding of the shutter in front of the cartridge case. A disk cartridge having a guide groove for holding and a projection of a shutter engaged with the guide groove, wherein the shutter is formed of an elastically deformable synthetic resin, and a first face plate that opens and closes the head access port. Department and its first
A second side plate portion that is arranged so as to face the face plate portion and that opens and closes the head access port, and a connecting plate portion that connects end portions of the first side plate portion and the second side plate portion, and has a side surface shape. The protrusion is provided on the inner surface of one of the first face plate portion and the second face plate portion, and the angle θ formed by the inner surface of the face plate portion and the inner surface of the protrusion is an obtuse angle. It is provided with a through hole portion extending from a root portion of the protrusion to the face plate portion and a joint corner portion of the face plate portion and the connecting plate portion, and the protrusion portion when the shutter is attached to the cartridge case. A thin portion is provided in the front part of the guide groove of the cartridge case that rides over, and an inclined surface inclined in the same direction as the inner surface of the protrusion is formed on the shutter riding surface side of the thin portion,
A disk cartridge which is provided below the thin-walled portion with a space for allowing elastic deformation of the thin-walled portion.
前記面板部の内面と突部の内面とのなす角度θが95〜12
0度の範囲に規制されていることを特徴とするデイスク
カートリツジ。2. In the claim (1),
The angle θ between the inner surface of the face plate portion and the inner surface of the protrusion is 95 to 12
A disc cartridge that is regulated in the range of 0 degrees.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60096599A JPH0740419B2 (en) | 1985-05-09 | 1985-05-09 | Disco Cartridge |
| KR1019860003259A KR950000953B1 (en) | 1985-05-09 | 1986-04-28 | Shutter assembly for use in a disc cartridge |
| DE8686106294T DE3686288T2 (en) | 1985-05-09 | 1986-05-07 | LOCK FOR PLATE CASSETTE. |
| EP86106294A EP0201870B1 (en) | 1985-05-09 | 1986-05-07 | A shutter assembly for use in a disc cartridge |
| US06/861,422 US4714973A (en) | 1985-05-09 | 1986-05-09 | Shutter assembly for use in a disc cartridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60096599A JPH0740419B2 (en) | 1985-05-09 | 1985-05-09 | Disco Cartridge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61255570A JPS61255570A (en) | 1986-11-13 |
| JPH0740419B2 true JPH0740419B2 (en) | 1995-05-01 |
Family
ID=14169343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60096599A Expired - Fee Related JPH0740419B2 (en) | 1985-05-09 | 1985-05-09 | Disco Cartridge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0740419B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0389573U (en) * | 1989-12-22 | 1991-09-12 | ||
| US6721266B1 (en) | 1992-07-23 | 2004-04-13 | Sony Corporation | Disc cartridge with slidably mounted shutter |
| US6510131B1 (en) * | 2000-02-16 | 2003-01-21 | Imation Corp. | Data storage disk cartridge including a shutter assembly with a stress relief mechanism |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6138145Y2 (en) * | 1980-08-14 | 1986-11-04 | ||
| JPS59138062U (en) * | 1983-03-04 | 1984-09-14 | ソニー株式会社 | Shutter lock mechanism of recording/reproducing media device |
| JPH0782727B2 (en) * | 1984-04-28 | 1995-09-06 | ソニー株式会社 | Magnetic disk cassette |
| JPS6174187A (en) * | 1984-09-19 | 1986-04-16 | Sony Corp | Shutter of sheet-like recording medium cassette and its manufacture |
| JPS6182395A (en) * | 1984-09-28 | 1986-04-25 | Sony Corp | Manufacture of shutter for disk cassette |
-
1985
- 1985-05-09 JP JP60096599A patent/JPH0740419B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61255570A (en) | 1986-11-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |