JPH0482045A - Disk loading/unloading mechanism - Google Patents

Disk loading/unloading mechanism

Info

Publication number
JPH0482045A
JPH0482045A JP2195606A JP19560690A JPH0482045A JP H0482045 A JPH0482045 A JP H0482045A JP 2195606 A JP2195606 A JP 2195606A JP 19560690 A JP19560690 A JP 19560690A JP H0482045 A JPH0482045 A JP H0482045A
Authority
JP
Japan
Prior art keywords
turntable
disk medium
cone
center
medium
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
Application number
JP2195606A
Other languages
Japanese (ja)
Inventor
Katsuhiko Horie
堀江 克彦
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.)
NEC Corp
Original Assignee
NEC 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 NEC Corp filed Critical NEC Corp
Priority to JP2195606A priority Critical patent/JPH0482045A/en
Publication of JPH0482045A publication Critical patent/JPH0482045A/en
Pending legal-status Critical Current

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  • Holding Or Fastening Of Disk On Rotational Shaft (AREA)

Abstract

PURPOSE:To prevent erroneous read at the time of recording and reproducing processing by allowing the external force due to an unloading member to act in the vicinity of the center of a disk medium at the time when the frictional force due to fitting between the center hole of the disk medium and the cone part in a turntable acts for unloading of the medium from the turntable. CONSTITUTION:An unloading member 5 is pushed upward along a guide groove 4a of a cone 4 by the restoring force of a spring 6 before a disk medium 2 is set. When the medium is set, a clamp projection part 8a is brought into contact with a cylinder part 5a, and the unloading member 5 is depressed downward in accordance with fall of a clamp 8, and therefore, an annular part 5b is placed under the surface of a turntable 1. When the disk medium 2 is unloaded, the annular part 5b is pushed upward by the force of the spring 6 in accordance with rise of the clamp 8, and a center hole 2a of the disk medium 2 is detached from the cone 4, and the disk medium 2 is floated above the turntable 1. Thus, erroneous read at the time of recording and reproducing processing is prevented.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明はディスク挿脱機構に関し、特に円盤状記録媒体
(以下、ディスク媒体という)をターンテーブルから離
脱させるディスク挿脱機構に関する。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a disk insertion/ejection mechanism, and more particularly to a disk insertion/ejection mechanism for removing a disc-shaped recording medium (hereinafter referred to as a disk medium) from a turntable.

〔従来の技術〕[Conventional technology]

従来、ディスク媒体のディスク挿脱機構は、第4図に示
すように、ディスクカートリ・フジ3内部に収納したデ
ィスク媒体2をターンテーブル1上から離脱するとき、
ディスクカートリッジ3を掴持したキャリア(図示せず
)が上向きに作動ることにより、ディスクカートリッジ
3内部の突起部3aがディスク媒体2面に当接し、ディ
スク媒体2はディスクカートリッジ3の上昇動作と連動
し、ディスク媒体2の中央部に穿設されたセンタ穴2a
がキャップ7より離脱する機構となっていた。
Conventionally, a disk insertion/removal mechanism for a disk medium, as shown in FIG.
When the carrier (not shown) holding the disk cartridge 3 moves upward, the protrusion 3a inside the disk cartridge 3 comes into contact with the surface of the disk medium 2, and the disk medium 2 moves in conjunction with the upward movement of the disk cartridge 3. A center hole 2a is formed in the center of the disk medium 2.
The mechanism was such that the cap was detached from the cap 7.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

上述した従来のディスク挿脱機構は、駆動モータ9の回
転軸に嵌着されたターンテーブル1中央部に設置された
キャップ7と、ディスクカートリッジ3に収納されたデ
ィスク媒体2中央に穿設したセンタ穴2aとが機械的な
はめおいて嵌合されているため、ディスク媒体5をター
ンテーブル1上から離脱しようとすると、キャップ7と
センタ穴2aとの間に摩擦力が働き、ディスク媒体面2
上のディスクカートリッジ3の突起部3aの接触面に多
大な外力が加わることになる。その結果、ディスク媒体
5にそりが生じ、記録・再生処理時に誤読の原因となる
危険性があった。
The conventional disk insertion/removal mechanism described above includes a cap 7 installed at the center of the turntable 1 fitted onto the rotating shaft of the drive motor 9, and a center hole drilled at the center of the disk medium 2 housed in the disk cartridge 3. Since the holes 2a are mechanically fitted, when the disk medium 5 is attempted to be removed from the turntable 1, a frictional force acts between the cap 7 and the center hole 2a, causing the disk medium surface 2
A large external force is applied to the contact surface of the protrusion 3a of the upper disk cartridge 3. As a result, there is a risk that the disk medium 5 may warp, causing erroneous reading during recording and reproduction processing.

尚、他のディスククランプ方式としてマグネットチャッ
ク(媒体をターンテーブル内のマズネットで吸着し、タ
ーンテーブル面上の固定する方式)を用いた場合にはデ
ィスク媒体の離脱時に、更に外力が加わることになり、
ディスク媒体自体により太きそりが生じるということは
言うまでもないことである。
In addition, if a magnetic chuck (a method in which the medium is attracted by a magnet inside the turntable and fixed on the turntable surface) is used as another disk clamping method, an additional external force will be applied when the disk medium is released. ,
It goes without saying that thick warpage occurs due to the disk medium itself.

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

本発明のディスク挿脱@楕は、中心部を駆動部の回転軸
に嵌着され、ディスク媒体を装着して回転駆動させるタ
ーンテーブルと、このターンテーブルと接合すると共に
、ディスク媒体の中心部に穿設されたセンタ穴と嵌合し
、且つ、側面に案内溝を配設したコーンと、コーンの外
側に位置し、コーンの案内横内を可動自在な離脱部材と
、この離脱部材を上方向に付勢するスプリングと、ディ
スク媒体をターンテーブル面上に押圧保持し、中心部に
設けた突起部により離脱部材の中心上部を上方から押圧
するクランプより構成されている。
The disk insertion/removal @ ellipse of the present invention includes a turntable whose center part is fitted onto the rotating shaft of the drive unit, and which is connected to the turntable and is connected to the center of the disk medium and is driven to rotate with the disk medium mounted thereon. A cone that fits into a drilled center hole and has a guide groove on the side surface; a detachment member located outside the cone and movable within the guide side of the cone; and a detachment member that moves upwardly. It consists of a biasing spring and a clamp that presses and holds the disk medium on the turntable surface and presses the upper center of the detachment member from above using a protrusion provided at the center.

〔実施例〕〔Example〕

次に本発明について図面を参照して説明する。 Next, the present invention will be explained with reference to the drawings.

第1図及び第2図は本発明の一実施例をそれぞれ示す断
面図である。
FIGS. 1 and 2 are sectional views showing one embodiment of the present invention, respectively.

第3図は本発明のディスク挿脱機構の分解斜視図である
。第1図〜第3図において、本発明のディスク挿脱機構
は、ターンテーブル1の中央部と接合し、ディスクカー
トリッジ3に収納されたディスク媒体2上のセンタ穴2
aと嵌合して媒体2中心と駆動モータの回転軸中心とを
一致させ、側面上に案内溝4aを配設したコーン4と、
コーン4中央部に設けたコーン穴4bに指示された円筒
部5aと案内溝4a内を上下に可動自在な環状部5bと
を連結した離脱部材5と、離脱部材5外側に位置して環
状部5bを上方向に押しあけるように付勢されたスプリ
ング6と、ディスク媒体2をターンテーブル1に押圧保
持し、中央部に設けたクランプ突起部8aが円筒部5a
を上から押圧するクランプ8とを装備している。上記構
成において、ディスク媒体2装着前に離脱部材5は、第
1図に示すようにスプリング6の復帰力によりコーン4
の案内溝4aに沿って上方向に押し上げられている0次
に、媒体装着時には、第2図に示すように、クランプ突
起部8aが円筒部5aと当接し、クランプ8の下降運動
に追従して離脱部材5は下方に押し下げられるなめ、環
状部5bはターンテーブル1面より下方に位置する。ま
た、ディスク媒体2の離脱時には、クランプ8の上昇動
作に伴い、環状部5bはスプリング6付勢によって押し
上げられ、ディスク媒体2ののセンタ穴2aがコーン4
から離脱し、ディスク媒体2はターンテーブル1上に浮
上する。
FIG. 3 is an exploded perspective view of the disk insertion/removal mechanism of the present invention. 1 to 3, the disc insertion/removal mechanism of the present invention connects to the center of the turntable 1 and connects to the center hole 2 on the disc medium 2 housed in the disc cartridge 3.
a cone 4 that is fitted with the cone 4 to align the center of the medium 2 with the center of the rotation axis of the drive motor, and has a guide groove 4a on the side surface;
A detachment member 5 which connects a cylindrical portion 5a indicated by a cone hole 4b provided in the center of the cone 4 and an annular portion 5b that is movable up and down within the guide groove 4a, and an annular portion located outside the detachment member 5. A spring 6 is biased to push open the disk medium 2 upwardly, and a clamp protrusion 8a provided at the center presses and holds the disk medium 2 against the turntable 1.
It is equipped with a clamp 8 that presses down from above. In the above configuration, before the disk medium 2 is attached, the detachment member 5 is moved to the cone 4 by the return force of the spring 6, as shown in FIG.
When the medium is loaded, the clamp protrusion 8a comes into contact with the cylindrical part 5a and follows the downward movement of the clamp 8, as shown in FIG. Since the detachment member 5 is pushed downward, the annular portion 5b is located below the surface of the turntable 1. Further, when the disk medium 2 is removed, the annular portion 5b is pushed up by the spring 6 as the clamp 8 moves upward, and the center hole 2a of the disk medium 2 is aligned with the cone 4.
The disk medium 2 floats above the turntable 1.

尚、本発明のディスク挿脱機構はマグネットチャック方
式を用いた場合にも適用可能である。
Note that the disk insertion/removal mechanism of the present invention is also applicable when using a magnetic chuck system.

〔発明の効果〕〔Effect of the invention〕

以上詳細に説明したように、本発明のディスク挿脱機構
を用いれば、ターンテーブルから媒体離脱時、たとえデ
ィスク媒体のセンタ穴とターンテーブル内部のコーン部
との間の嵌合による摩擦力が働いても、離脱部材による
外力はディスク媒体中心付近で作用するため、ディスク
媒体のそれは解消され、記録、再生処理時に誤読となる
危険性が排除され、信頼性が向上するという効果がある
As explained in detail above, if the disk insertion/removal mechanism of the present invention is used, when the medium is removed from the turntable, even if the frictional force due to the fit between the center hole of the disk medium and the cone inside the turntable acts. However, since the external force caused by the detachment member acts near the center of the disk medium, the force exerted on the disk medium is eliminated, the risk of misreading during recording and reproduction processing is eliminated, and reliability is improved.

また、構造が簡単で極めて実用性の高い装置が得られる
という効果がある。
Further, there is an effect that a device having a simple structure and extremely high practicality can be obtained.

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

第1図及び第2図は本発明の一実施例をそれぞれ示す断
面図、第3図は本発明のディスク挿脱機構の分解斜視図
、第4図は従来例を示す断面図である。 1・・・ターンテーブル、2・・・ディスク媒体、2a
・・・センタ穴、3・・・ディスクカートリッジ、4・
・コーン、4a・・・案内溝、4b・・・コーン穴、5
・・・離脱部材、5a・・・円筒部、5b・・・環状部
、6・・・スプリング、7・・・キャップ、8・・・ク
ランプ、8a・・・突起部、9・・・駆動モータ。
1 and 2 are cross-sectional views showing an embodiment of the present invention, FIG. 3 is an exploded perspective view of the disk insertion/ejection mechanism of the present invention, and FIG. 4 is a cross-sectional view showing a conventional example. 1... Turntable, 2... Disk medium, 2a
...Center hole, 3...Disk cartridge, 4.
・Cone, 4a... Guide groove, 4b... Cone hole, 5
... Detachment member, 5a... Cylindrical part, 5b... Annular part, 6... Spring, 7... Cap, 8... Clamp, 8a... Projection, 9... Drive motor.

Claims (1)

【特許請求の範囲】[Claims] 中心部を駆動部の回転軸に嵌着され、円盤状記録媒体を
装着して回転駆動させるターンテーブルと、前記ターン
テーブルと接合すると共に、前記円盤状記録媒体の中心
部に穿設されたセンタ穴と嵌合し、且つ、側面に案内溝
を配設したコーンと、前記コーンの外側に位置し、前記
コーンの案内構内を可動自在の離脱部材と、前記離脱部
材を上方向に付勢するスプリングと、前記円盤状記録媒
体を前記ターンテーブル面上に押圧保持し、中心部に設
けた突起部により前記離脱部材の中心上部を上方から押
圧するクランプとを備えたことを特徴とするディスク挿
脱機構。
A turntable whose center part is fitted onto a rotating shaft of a drive unit, and a disc-shaped recording medium is mounted thereon and driven to rotate; and a center which is connected to the turntable and is bored in the center of the disc-shaped recording medium. a cone that fits into the hole and has a guide groove on its side surface; a detachment member that is located outside the cone and is movable within the guideway of the cone; and a detachment member that urges the detachment member upward. A disk inserter comprising: a spring; and a clamp that presses and holds the disc-shaped recording medium on the turntable surface and presses the upper center of the detachment member from above with a protrusion provided at the center. Escape mechanism.
JP2195606A 1990-07-24 1990-07-24 Disk loading/unloading mechanism Pending JPH0482045A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2195606A JPH0482045A (en) 1990-07-24 1990-07-24 Disk loading/unloading mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2195606A JPH0482045A (en) 1990-07-24 1990-07-24 Disk loading/unloading mechanism

Publications (1)

Publication Number Publication Date
JPH0482045A true JPH0482045A (en) 1992-03-16

Family

ID=16343958

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2195606A Pending JPH0482045A (en) 1990-07-24 1990-07-24 Disk loading/unloading mechanism

Country Status (1)

Country Link
JP (1) JPH0482045A (en)

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