JPH09171669A - Disk cartridge - Google Patents

Disk cartridge

Info

Publication number
JPH09171669A
JPH09171669A JP33020596A JP33020596A JPH09171669A JP H09171669 A JPH09171669 A JP H09171669A JP 33020596 A JP33020596 A JP 33020596A JP 33020596 A JP33020596 A JP 33020596A JP H09171669 A JPH09171669 A JP H09171669A
Authority
JP
Japan
Prior art keywords
case
eject pin
transparent
parting
center core
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.)
Granted
Application number
JP33020596A
Other languages
Japanese (ja)
Other versions
JP2947765B2 (en
Inventor
Hisao Kato
久雄 加藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TDK Corp
Original Assignee
TDK Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by TDK Corp filed Critical TDK Corp
Priority to JP33020596A priority Critical patent/JP2947765B2/en
Publication of JPH09171669A publication Critical patent/JPH09171669A/en
Application granted granted Critical
Publication of JP2947765B2 publication Critical patent/JP2947765B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Moulds For Moulding Plastics Or The Like (AREA)
  • Packaging For Recording Disks (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a disk cartridge having a good appearance by using a case bottom surface placed oppositely to a case driving shaft inserting hole as the contact surface of a parting eject pin so as to improve case molding and making the trace of the parting pin inconspicuous. SOLUTION: The bottom surface of a center core hole part 10 provided in the bottom surface of an upper case 1 made of a transparent of traslucent resin is used as the contact surface of a parting eject pin 11 having nearly the same diameter as the diameter of the center core hole part 10. A mold for forming the upper case 1 is formed in such a manner that a cavity 15 is formed of a fixed mold 13 and a movable mold 14, a parting surface is formed between the opposing molds 13 and 14 and the eject pin 11 is protruded by an actuating member and the product is parted from the molds. Thus, since the trace of eject pin 11 is masked in an inner surface shape and made uncospicuons even on the transparent or translucent upper case 1, a disk cartridge having a good appearance and having no molding defects is provided.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】本発明は、フレキシブルディ
スク、ハードディスク、特に光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。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk cartridge in which a flexible disk, a hard disk, particularly an optical disk, is 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は、ケースに収納
された状態が透視できるように透明または半透明ケース
に収納されることもあってディスクカートリッジとして
記録・再生機器にセッティングされて用いられる。従来
のこの種のケースの合成樹脂射出成形品では、金型から
離型させるために、いろいろな離型手段が用いられてい
るが、この離型に基づく痕跡が成形製品の外観に残って
体裁上不具合が生じ、商品価値を低下させるので、痕跡
をなるべく目立たないように工夫され、改善の要求も多
く出されている。従来の射出成形品では、使われる合成
樹脂材が成形時の収縮率が大きいものでは、離型抵抗が
大きいので、離型のために突き出しピン、即ちエジェク
トピンを設置することが知られている。
2. Description of the Related Art Generally, an information medium such as a magnetic disk, an optical disk or a magneto-optical disk may be housed in a transparent or translucent case so that the state of being housed in the case can be recorded as a disk cartridge. It is used after being set on a playback device. In the conventional synthetic resin injection molded product of this kind of case, various mold releasing means are used for releasing from the mold, but traces due to this mold releasing remain in the appearance of the molded product and are Since the above problems will occur and the commercial value will be reduced, it has been devised so that the traces will be inconspicuous as much as possible and many requests for improvement have been made. In conventional injection-molded products, if the synthetic resin material used has a large shrinkage ratio during molding, the release resistance is large, so it is known to install ejection pins, that is, eject pins, for release. .

【0003】[0003]

【発明が解決しようとする課題】ところが、ケースが透
明または半透明ケースであると、媒体が見える部分にエ
ジェクトピンの離型痕跡があると、見ばえが悪く外観劣
化となることが多く、外観上または製品の形状に対する
制約が大きいし、離型痕跡を製品の目立たない位置、即
ちケース底面にあるセンターコアに対応するリブとする
と、該リブが細いとリブをエジェクトピンの突き出し位
置にできなく、他の位置に求めなくてはならない制約が
あるし、センターコア径とエジェクトピン径の寸法が大
きく違うと目立って見てくれが悪く、体裁上問題があ
り、商品価値も低下する欠点があった。本発明は、これ
ら従来の欠点を排除し、透明または半透明ケースでも離
型用エジェクトピンの離型痕跡を残すことなく、また残
しても見分けがつかないで、ディスクカートリッジの外
観上の不具合もなく商品価値の高いディスクカートリッ
ジを提供することを目的とするものである。
However, if the case is a transparent or semi-transparent case, and if there is a release mark of the eject pin in the part where the medium is visible, the appearance is often poor and the appearance deteriorates. If there is a large restriction on the appearance or the shape of the product, and if the release mark is a position where the release mark is inconspicuous, that is, the rib corresponding to the center core on the bottom of the case, if the rib is thin, the rib can be the protruding position of the eject pin. However, there is a restriction that we have to seek in other positions, and if the center core diameter and the eject pin diameter are greatly different, it is hard to see it conspicuously, there is a cosmetic problem, and there is a drawback that the commercial value decreases. . The present invention eliminates these conventional drawbacks, does not leave a release mark of a release eject pin even in a transparent or translucent case, and even if it remains, it is indistinguishable, and there is also a defect in the appearance of the disk cartridge. The purpose is to provide a disc cartridge having a high commercial value.

【0004】[0004]

【課題を解決するための手段】本発明は、内部に媒体を
収納するケースであって、該ケースが透明または半透明
の樹脂で形成されるディスクカートリッジにおいて、前
記ケースの駆動軸挿入孔に対向するケース底面を離型用
のエジェクトピンの突き当て面としたものであり、さら
に突き当て面とする際に、エジェクトピン直径とセンタ
ーコア直径とを略同径としたものである。
SUMMARY OF THE INVENTION The present invention is a case for accommodating a medium therein, wherein the case is formed of a transparent or translucent resin and faces a drive shaft insertion hole of the case. The bottom surface of the case serves as the abutting surface of the eject pin for release, and when the abutting surface is used, the diameter of the eject pin and the diameter of the center core are substantially the same.

【0005】[0005]

【作用】ケース成形用の金型からケースを離型する際
に、ケースの駆動軸挿入孔に対向するケース底面を離型
用のエジェクトピンの突き当て面としたことで、ケース
の成形性が改善され、かつ透明なケースでもセンターコ
ア穴部内面形状にマスキングされて目立ちにくくなっ
て、しかも離型痕跡がなく或いは見分けがつかなく、外
観上支障となることなく用いられる。
When the case is released from the case molding die, the bottom surface of the case that faces the drive shaft insertion hole of the case serves as the abutment surface of the eject pin for mold release, so that the moldability of the case is improved. Even in an improved and transparent case, the inner surface shape of the center core hole is masked to make it inconspicuous, and there is no trace of mold release or indistinguishable, and it is used without any trouble in appearance.

【0006】[0006]

【実施例】本発明の実施例を図1乃至図4のディスクカ
ートリッジの例で説明すると、ケース1の内部に情報媒
体のディスク状媒体2を収納し、ヘッド挿入孔などの開
口3を形成したケース1に、該開口3を開閉するための
断面略コ字状のシャッタ4を摺動自在に備え、前記ケー
ス1は上ケースと下ケースとからなり、該ケース1が透
明または半透明の樹脂で形成されるディスクカートリッ
ジであって、下ケースの駆動軸挿入孔16に対向する上
ケース1の底面にあるセンターコア穴部10の底面を離
型用のエジェクトピン11の突き当て面としてディスク
カートリッジとしてある。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to an example of a disk cartridge shown in FIGS. 1 to 4. A disk-shaped medium 2 as an information medium is housed in a case 1 and an opening 3 such as a head insertion hole is formed. The case 1 is slidably provided with a shutter 4 having a substantially U-shaped cross section for opening and closing the opening 3. The case 1 is composed of an upper case and a lower case, and the case 1 is made of a transparent or translucent resin. A disk cartridge formed by the method described above, wherein the bottom surface of the center core hole 10 on the bottom surface of the upper case 1 facing the drive shaft insertion hole 16 of the lower case is used as the abutting surface of the eject pin 11 for mold release. There is.

【0007】そして、前記センターコア穴部10は、ケ
ース内面に突設された円環状リブ12で囲成され、該円
環状リブ12の内周径にほぼ等しい直径のエジェクトピ
ン11の突き当て面を形成し、即ち、エジェクトピン径
をセンターコア径と略同径として、センターコア穴部1
0の底面の大部分を離型時の作用面としてあって、離型
痕跡がついたとしても目立たない位置とするのがよい。
The center core hole 10 is surrounded by an annular rib 12 protruding from the inner surface of the case, and the abutment surface of the eject pin 11 having a diameter substantially equal to the inner peripheral diameter of the annular rib 12. That is, the eject pin diameter is set to be substantially the same as the center core diameter, and the center core hole portion 1 is formed.
Most of the bottom surface of 0 is a working surface at the time of mold release, and it is good to set it at a position where it is not conspicuous even if a mold release trace is attached.

【0008】この場合、透明または半透明の樹脂で射出
成形される成形金型のキャビティ内に離型用エジェクト
ピン11を備えたものにおいて、ケース内に収納される
媒体のセンターコア6の直径と略同径のエジェクトピン
を設けたカートリッジ成形用金型を用いるのがよい。こ
の成形用金型は、固定金型13と可動金型14とからキ
ャビティ15を形成し、対向する両金型13,14間に
パーティング面を形成し、エジェクトピン11を作動部
材で突き出し成形品の離型ができるようになっている。
In this case, in a case where the mold ejecting pin 11 is provided in the cavity of a molding die injection-molded with a transparent or translucent resin, the diameter of the center core 6 of the medium accommodated in the case and It is preferable to use a cartridge molding die provided with eject pins having substantially the same diameter. In this molding die, a cavity 15 is formed from a fixed mold 13 and a movable mold 14, a parting surface is formed between the two molds 13 and 14 facing each other, and the eject pin 11 is ejected by an operating member. The product can be released from the mold.

【0009】図中、5はシャッタスライドエリア、6は
センターコアで媒体2に備えられる。7は駆動軸、8は
シャッタロック部材、9は消去防止用プラグ、17は媒
体収納部、18は模様部である。なお、前記ケース1
は、フロッピーディスク、コンパクトディスクやビデオ
ディスク、光ディスクなどのディスク状媒体を収納した
各種のディスクカートリッジ形態のシェルに選んで構成
される。
In the figure, 5 is a shutter slide area, and 6 is a center core, which is provided on the medium 2. Reference numeral 7 is a drive shaft, 8 is a shutter lock member, 9 is an erasure prevention plug, 17 is a medium storage portion, and 18 is a pattern portion. In addition, the case 1
Is selected and configured as a shell in the form of various disk cartridges containing disk-shaped media such as floppy disks, compact disks, video disks, and optical disks.

【0010】[0010]

【発明の効果】本発明は、内部に媒体を収納するケース
であって、該ケースが透明または半透明の樹脂で形成さ
れるディスクカートリッジにおいて、ケースの駆動軸挿
入孔に対向するケース底面を離型用のエジェクトピンの
突き当て面としたことで、透明なケースでも離型ピン痕
跡が内面形状にマスキングされて目立ちにくくなって、
外観上、支障となることなく用いられると共に、樹脂の
流動性も良好で成形しやすい形態となって、成形不良が
なく、外観体裁も良く商品価値も高められるなどの実用
上の効果がある。
The present invention is a case for accommodating a medium therein, wherein the case is made of a transparent or translucent resin, and the case bottom surface facing the drive shaft insertion hole of the case is separated. By using the abutment surface of the eject pin for the mold, the traces of the mold release pin are masked by the inner surface shape even in a transparent case, making it less noticeable.
In addition to being used without any hindrance to the appearance, it has a practical effect in that it has a good fluidity of the resin and is in a form that allows easy molding, has no molding defects, has a good appearance, and enhances the commercial value.

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

【図1】本発明の実施例の平面図である。FIG. 1 is a plan view of an embodiment of the present invention.

【図2】図1の例の分離状態の斜視図である。FIG. 2 is a perspective view of the example of FIG. 1 in a separated state.

【図3】図1の例の上ケースの内面を示す拡大平面図で
ある。
FIG. 3 is an enlarged plan view showing the inner surface of the upper case of the example of FIG.

【図4】図1の例のA−A線における拡大縦断面図であ
る。
FIG. 4 is an enlarged vertical sectional view taken along the line AA of the example of FIG.

【図5】図1の例の上ケースの成形状態の縦断面図であ
る。
5 is a vertical cross-sectional view of the upper case of the example of FIG. 1 in a molded state.

【符号の説明】[Explanation of symbols]

1 ケース 2 ディスク状媒体 3 開口 4 シャッタ 5 シャッタスライドエリア 6 センターコア 10 センターコア穴部 11 エジェクトピン 12 環状リブ 16 駆動軸挿入孔 1 Case 2 Disk Medium 3 Opening 4 Shutter 5 Shutter Sliding Area 6 Center Core 10 Center Core Hole 11 Eject Pin 12 Annular Rib 16 Drive Shaft Insertion Hole

─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───

【手続補正書】[Procedure amendment]

【提出日】平成9年2月21日[Submission date] February 21, 1997

【手続補正1】[Procedure amendment 1]

【補正対象書類名】明細書[Document name to be amended] Statement

【補正対象項目名】特許請求の範囲[Correction target item name] Claims

【補正方法】変更[Correction method] Change

【補正内容】[Correction contents]

【特許請求の範囲】[Claims]

【手続補正2】[Procedure amendment 2]

【補正対象書類名】明細書[Document name to be amended] Statement

【補正対象項目名】0004[Correction target item name] 0004

【補正方法】変更[Correction method] Change

【補正内容】[Correction contents]

【0004】[0004]

【課題を解決するための手段】本発明は、内部に媒体を
収納するケースであって、該ケースの少なくとも媒体収
納部が透明または半透明の樹脂で形成されるディスクカ
ートリッジにおいて、前記ケースの駆動軸挿入孔に対向
するケース底面を離型用のエジェクトピンの突き当て面
としたものであり、さらに突き当て面とする際に、エジ
ェクトピン直径とセンターコア直径とを略同径としたも
のである。
SUMMARY OF THE INVENTION The present invention is a case for accommodating a medium therein, wherein at least the medium accommodating portion of the case is formed of a transparent or translucent resin. The bottom surface of the case facing the shaft insertion hole is used as the abutment surface for the eject pin for mold release, and when the abutment surface is used, the diameter of the eject pin and the center core diameter should be approximately the same. is there.

【手続補正3】[Procedure 3]

【補正対象書類名】明細書[Document name to be amended] Statement

【補正対象項目名】0010[Correction target item name] 0010

【補正方法】変更[Correction method] Change

【補正内容】[Correction contents]

【0010】[0010]

【発明の効果】本発明は、内部に媒体を収納するケース
であって、該ケースの少なくとも媒体収納部が透明また
は半透明の樹脂で形成されるディスクカートリッジにお
いて、ケースの駆動軸挿入孔に対向するケース底面を離
型用のエジェクトピンの突き当て面としたことで、透明
なケースでも離型ピン痕跡が内面形状にマスキングされ
て目立ちにくくなって、外観上、支障となることなく用
いられると共に、樹脂の流動性も良好で成形しやすい形
態となって、成形不良がなく、外観体裁も良く商品価値
も高められるなどの実用上の効果がある。
INDUSTRIAL APPLICABILITY The present invention is a case for accommodating a medium therein, and at least a medium accommodating portion of the case is formed of a transparent or translucent resin. By using the bottom surface of the case as the abutment surface of the eject pin for mold release, the trace of the mold release pin is masked by the inner surface shape to make it less noticeable even in a transparent case. In addition, the resin has good fluidity and can be easily molded, has no molding defects, has a good appearance, and has a high commercial value.

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 内部に媒体を収納するケースであって、
該ケースが透明または半透明の樹脂で形成されるディス
クカートリッジにおいて、前記ケースの駆動軸挿入孔に
対向するケース底面を離型用のエジェクトピンの突き当
て面としたことを特徴とするディスクカートリッジ。
1. A case for accommodating a medium inside,
A disk cartridge in which the case is formed of a transparent or translucent resin, wherein the bottom surface of the case facing the drive shaft insertion hole of the case serves as an abutting surface of a release eject pin.
【請求項2】 前記ケース内に収納される媒体のセンタ
ーコアが、エジェクトピンと略同径である請求項1記載
のディスクカートリッジ。
2. The disk cartridge according to claim 1, wherein the center core of the medium contained in the case has substantially the same diameter as the eject pin.
JP33020596A 1996-11-27 1996-11-27 Disk cartridge Expired - Fee Related JP2947765B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP33020596A JP2947765B2 (en) 1996-11-27 1996-11-27 Disk cartridge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP33020596A JP2947765B2 (en) 1996-11-27 1996-11-27 Disk cartridge

Publications (2)

Publication Number Publication Date
JPH09171669A true JPH09171669A (en) 1997-06-30
JP2947765B2 JP2947765B2 (en) 1999-09-13

Family

ID=18230025

Family Applications (1)

Application Number Title Priority Date Filing Date
JP33020596A Expired - Fee Related JP2947765B2 (en) 1996-11-27 1996-11-27 Disk cartridge

Country Status (1)

Country Link
JP (1) JP2947765B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100517885B1 (en) * 2002-10-21 2005-09-29 (주)케이.에스.엠 Case for receiving recording media

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100517885B1 (en) * 2002-10-21 2005-09-29 (주)케이.에스.엠 Case for receiving recording media

Also Published As

Publication number Publication date
JP2947765B2 (en) 1999-09-13

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