JPS61196464A - Rotary driving device for magnetic disk - Google Patents

Rotary driving device for magnetic disk

Info

Publication number
JPS61196464A
JPS61196464A JP3640785A JP3640785A JPS61196464A JP S61196464 A JPS61196464 A JP S61196464A JP 3640785 A JP3640785 A JP 3640785A JP 3640785 A JP3640785 A JP 3640785A JP S61196464 A JPS61196464 A JP S61196464A
Authority
JP
Japan
Prior art keywords
magnetic disk
rotator
rotary driving
rotor
air
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
JP3640785A
Other languages
Japanese (ja)
Inventor
Hajime Seki
関 源
Masahiko Saito
雅彦 斉藤
Haruyuki Kaito
海東 晴行
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP3640785A priority Critical patent/JPS61196464A/en
Publication of JPS61196464A publication Critical patent/JPS61196464A/en
Pending legal-status Critical Current

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  • Rotational Drive Of Disk (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

PURPOSE:To cool the periphery of a rotary driving body with simple structure and to increase the package density of parts by forming an opening part in the rotator of a rotary driving device for magnetic disks so that external flows in. CONSTITUTION:External air is sucked in through the opening part 44 through the rotation of the rotator 33 of the rotary driving body 18 and discharged from the gap between the upper end surface of the rotator 33 and a substrate 38, thereby accelerating the flow of the air by the viscosity between the rotator 33 and air through the suction and discharge of the air. Consequently, the cooling of parts provided nearby the rotator 33 are accelerated to suppress a rise in the temperature of the device.

Description

【発明の詳細な説明】 〔発明の利用分野〕 本発明はフロッピーディスクなどの磁気ディスクの回転
駆動装置に係り、特に冷却効率のよい偏平な回転駆動装
置に関する。
DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a rotary drive device for a magnetic disk such as a floppy disk, and particularly to a flat rotary drive device with good cooling efficiency.

〔発明の背景〕[Background of the invention]

フロッピーディスクなどの可撓性磁気ディスクに磁気ヘ
ッドを摺接して、情報の記録再生を行う磁気記録再生装
置については、特開昭55−7702号などによって開
示されているが、近年この磁気記録再生装置は外部記憶
装置として文書作成機やパーソナルコンピュータに組込
まれる場合が多くなってきており、この場合には設置ス
ペースの縮小化が要求され磁気記録再生装置の部品の実
装密度を高くする必要が生じてきた。実装密度が高くな
ると部品自体の発熱により装置の温度上昇が生じるとい
う問題があった。
A magnetic recording and reproducing device that records and reproduces information by sliding a magnetic head on a flexible magnetic disk such as a floppy disk has been disclosed in Japanese Patent Laid-Open No. 55-7702, etc., but in recent years this magnetic recording and reproducing device has been disclosed. Devices are increasingly being incorporated into document processing machines and personal computers as external storage devices, and in this case, it is necessary to reduce the installation space and increase the mounting density of the components of magnetic recording and reproducing devices. It's here. When the packaging density increases, there is a problem in that the temperature of the device increases due to the heat generated by the components themselves.

〔発明の目的〕[Purpose of the invention]

本発明は上述の点に鑑みてなされたもので、その目的と
するところは1部品の放熱を容易にし部品の実装密度を
高くすることのできる磁気ディスクの回転駆動装置を提
供するにある。
The present invention has been made in view of the above-mentioned points, and its object is to provide a magnetic disk rotation drive device that can facilitate heat dissipation from one component and increase the mounting density of components.

〔発明の概要〕[Summary of the invention]

本発明は磁気記録再生装置の磁気ディスクの回転駆動装
置を構成する回転子の中央部近傍に開口部を形成し、こ
の開口部を空気の吸込口として回転子の回転にともない
発生する空気の流動を促すことにより、所期の目的を達
成するようになしたものである。
The present invention forms an opening near the center of a rotor constituting a rotational drive device for a magnetic disk of a magnetic recording and reproducing device, and uses this opening as an air intake port for air flow generated as the rotor rotates. The aim was to achieve the intended purpose by encouraging

〔発明の実施例〕[Embodiments of the invention]

以下本発明に係る磁気ディスクの回転駆動装置の一実施
例を図面を参照して説明する。
DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a magnetic disk rotation drive device according to the present invention will be described below with reference to the drawings.

第1図、第2図、第3図及び第4図に本発明の一実施例
を示す、磁気記録再生装置は通常第2図及び第3図に示
すように構成されている。シャーシ1は支持板2により
支承されており、これらの。
An embodiment of the present invention is shown in FIG. 1, FIG. 2, FIG. 3, and FIG. 4, and a magnetic recording/reproducing apparatus is normally constructed as shown in FIGS. 2 and 3. The chassis 1 is supported by a support plate 2.

前面に設けられた前面パネル3には磁気ディスク4の挿
入口5が形成されている。シャーシ1の一部には突出部
6が設けられており、この突出部6に形成された案内溝
7によって前記磁気ディスク4を収納するホルダ8が上
下動自在に案内されている。9はインジェクトレバーで
一端をシャーシエに懸架されたバネ10に連結されて図
中右方向に移動するように付勢されている。このインジ
ェクトレバー9の一端はシャーシ1に植設された支持ビ
ン11により回動可能に設けられた杆体12に係合する
ように配設されている。また前記ホルダ8の上部にバネ
13によって付勢された杆体14が回動可能に設けられ
ており、この杆体14にはピン15が植設されていて、
前記磁気ディスク4をホルダ8内に挿入すると、このピ
ン15が前記バネ13の付勢力に抗して平面運動して磁
気ディスク4の図示せぬシャッタを開き、さらに磁気デ
ィスク4を押し進めると磁気ディスク4が前記杆体12
に当接し、シャーシ1に植設された前記支持ピン11を
軸として杆体12が回動し、この杆体12と前記インジ
ェクトレバー9との係合が外れて前記バネ10の付勢力
によって、前記ホルダ8はこのホルダ8に植設されたビ
ン16を介して前記インジェクトレバー9に斜めに形成
された案内溝17に沿って下方へ移動し、磁気ディスク
4を回転駆動体18のチャッキング部19へ装着するよ
うになっている。
An insertion slot 5 for a magnetic disk 4 is formed in a front panel 3 provided at the front. A protrusion 6 is provided in a part of the chassis 1, and a guide groove 7 formed in the protrusion 6 guides a holder 8 that accommodates the magnetic disk 4 in a vertically movable manner. Reference numeral 9 denotes an injector lever, one end of which is connected to a spring 10 suspended from the chassis, and biased to move rightward in the figure. One end of the injection lever 9 is arranged to engage with a rod 12 rotatably provided by a support pin 11 implanted in the chassis 1. Further, a rod 14 biased by a spring 13 is rotatably provided on the upper part of the holder 8, and a pin 15 is implanted in the rod 14.
When the magnetic disk 4 is inserted into the holder 8, this pin 15 moves in a plane against the biasing force of the spring 13 to open a shutter (not shown) of the magnetic disk 4. When the magnetic disk 4 is further pushed forward, the magnetic disk is closed. 4 is the rod 12
The rod 12 rotates around the support pin 11 implanted in the chassis 1, and the rod 12 is disengaged from the injection lever 9, and the urging force of the spring 10 causes the rod 12 to rotate about the support pin 11, which is implanted in the chassis 1. 8 moves downward along a guide groove 17 formed diagonally in the inject lever 9 via a bottle 16 implanted in the holder 8, and moves the magnetic disk 4 to the chucking portion 19 of the rotary drive body 18. It is designed to be worn.

一方磁気ヘッド20.21はそれぞれキャリッジ22.
ヘッドアーム23にジンバル24.25を介して配設さ
れている。キャリッジ22はその一端を支持体26を介
して案内軸27により水平方向に摺動自在に支承されて
おり、他端をステッピングモータ28により回転される
スクリュー29と螺合するスクリューナツト30を介し
て支承されている。さらに前記へラドアーム23は支持
体26.31を介して前記キャリッジ22に螺着固設さ
れており、この支持体31の一端に設けられたバネ32
により前記磁気ヘッド20.21が前記磁気ディスク4
を弾性的に挾持当接するようになっている。
On the other hand, the magnetic heads 20 and 21 are mounted on the carriages 22 and 21, respectively.
It is disposed on the head arm 23 via gimbals 24 and 25. The carriage 22 has one end slidably supported in the horizontal direction by a guide shaft 27 via a support 26, and the other end supported by a screw nut 30 which is screwed into a screw 29 rotated by a stepping motor 28. Supported. Furthermore, the helad arm 23 is screwed and fixed to the carriage 22 via a support 26.31, and a spring 32 provided at one end of this support 31
Accordingly, the magnetic heads 20 and 21 are connected to the magnetic disk 4.
It is designed to elastically hold and abut.

前記回転駆動体18は第1図に示すように構成されてい
る。すなわち回転子33の中心には回転軸34の一端が
圧入固設されており、この回転軸34はハウジング35
に設けられたボールベアリング36及び軸受37により
回転自在に支承されており、このハウジング35は基板
38を介して前記シャーシ1に固設されている。また前
記回転軸34の上方の他端には前記磁気ディスク4のチ
、ヤツキング部19が固設されており、このチャッキン
グ部19には駆動ピン39が上面より突出するように配
設されており、この駆動ビン39はチャッキング部19
の裏面に設けられた板バネ40によって上方に付勢され
ている。前記シャーシlと回転軸34との位置関係は前
記ハウジング35の上面に環状に突出したインロ一部4
1の外周面を介して位置決めされる。前記基板38の下
面には固定子42が設けられており、この固定子42に
対向する位置の前記回転子33の上面には磁性体43が
設けられている。この回転子33の磁性体43と前記回
転軸34との間には本発明の特徴である複数個の開口部
44が形成されている。この開口部44の穴径は1〜6
m程度であり、前記回転子33の上端面と基板38との
間隙は0.1〜0.4mm程度である。
The rotary drive body 18 is constructed as shown in FIG. That is, one end of a rotating shaft 34 is press-fitted into the center of the rotor 33, and this rotating shaft 34 is attached to the housing 35.
The housing 35 is rotatably supported by a ball bearing 36 and a bearing 37 provided in the housing 35 , and the housing 35 is fixed to the chassis 1 via a base plate 38 . Further, a chucking portion 19 for holding the magnetic disk 4 is fixed at the other upper end of the rotating shaft 34, and a driving pin 39 is disposed in the chucking portion 19 so as to protrude from the upper surface. This driving bin 39 is connected to the chucking part 19.
It is biased upward by a leaf spring 40 provided on the back surface. The positional relationship between the chassis l and the rotating shaft 34 is such that the spigot part 4 protrudes annularly from the upper surface of the housing 35.
The position is determined via the outer circumferential surface of 1. A stator 42 is provided on the lower surface of the substrate 38, and a magnetic material 43 is provided on the upper surface of the rotor 33 at a position facing the stator 42. A plurality of openings 44, which is a feature of the present invention, are formed between the magnetic body 43 of the rotor 33 and the rotating shaft 34. The hole diameter of this opening 44 is 1 to 6.
The gap between the upper end surface of the rotor 33 and the substrate 38 is about 0.1 to 0.4 mm.

第4図に磁気ディスク4のハブ45の形状を示す、この
ハブ45の中心には前記回転軸34と係合するセンタ一
孔46が形成されており、その外周近くには前記駆動ビ
ン39と係合するドライブ孔47が形成されている。
FIG. 4 shows the shape of the hub 45 of the magnetic disk 4. A center hole 46 is formed in the center of the hub 45 to engage with the rotating shaft 34, and near the outer periphery of the hub 45, the drive bin 39 and the center hole 46 are formed. An engaging drive hole 47 is formed.

上述の本実施例につき以下にその動作を説明する。磁気
ディスク4をホルダ8に挿入すると、このホルダ8に回
動可能に保持された杆体14に植設されてビン15によ
って、磁気ディスク4のシヤツタを開くとともにインジ
ェクトレバー9と杆体12との係合が解除され、ホルダ
8がインジェクトレバー9に形成された案内溝17に沿
って下がり、磁気ディスク4がチャッキング部19に着
座する。この磁気ディスク4がチャッキング部19に着
座する前後の状態をそれぞれ第5図及び第6図に示す、
第5図に示すように磁気ディスクAのハブ45がチャッ
キング部19の上面に当接すると、駆動ピン39とドラ
イブ孔47が係合するまでバネ40に保持された駆動ピ
ン39はハブ45に押されて後退するが、このハブ45
がチャッキング部19の回転によって相対的に回転変位
すると、第6図に示すように駆動ピン39がドライブ孔
47に係合してチャッキングを完了する。
The operation of the above-mentioned embodiment will be explained below. When the magnetic disk 4 is inserted into the holder 8, it is implanted in the rod 14 rotatably held in the holder 8, and the shutter of the magnetic disk 4 is opened by the pin 15, and the inject lever 9 and the rod 12 are engaged. is released, the holder 8 is lowered along the guide groove 17 formed in the inject lever 9, and the magnetic disk 4 is seated on the chucking part 19. The states before and after the magnetic disk 4 is seated on the chucking part 19 are shown in FIGS. 5 and 6, respectively.
As shown in FIG. 5, when the hub 45 of the magnetic disk A comes into contact with the upper surface of the chucking part 19, the drive pin 39 held by the spring 40 is pushed into the hub 45 until the drive pin 39 and the drive hole 47 are engaged. I am pushed back, but this hub 45
When is relatively rotationally displaced by the rotation of the chucking portion 19, the drive pin 39 engages with the drive hole 47, as shown in FIG. 6, and chucking is completed.

45はハウジング35に形成されたバネ40の逃げ溝で
ある。このようにチャッキングが完了するとホルダ8に
支持されたヘッドアーム23が閉じ、磁気ヘッド20.
21が磁気ディスク4の磁気記録面を介して当接し、記
録面への情報の記録再生を行なう、インジェクトレバー
9を図中右方向に押し込むと、再びホルダ8を案内溝1
7に沿って上昇させるとともに、ピン15によって磁気
ディスク4が排出され、インジェクトレバー9と杆体1
2とが係合保持される。
Reference numeral 45 designates an escape groove for the spring 40 formed in the housing 35. When chucking is completed in this way, the head arm 23 supported by the holder 8 closes, and the magnetic head 20.
21 comes into contact with the magnetic recording surface of the magnetic disk 4 to record and reproduce information on the recording surface. When the inject lever 9 is pushed to the right in the figure, the holder 8 is moved again into the guide groove 1.
7, the magnetic disk 4 is ejected by the pin 15, and the inject lever 9 and the rod 1
2 are engaged and held.

上述の通り構成された本実施例によれば、回転駆動体1
8の回転子33の回転にともない、開口部44より外気
を吸込んで内部に流入し、回転子33の上部端面と基板
38との隙間より空気が吐出され、空気の吸排気による
回転子33と空気の粘性による空気の流動が促され、こ
のため回転子・33の近傍に設けられた部品の冷却が促
進され装置の温度上昇が抑制される。
According to this embodiment configured as described above, the rotary drive body 1
As the rotor 33 of No. 8 rotates, outside air is sucked in through the opening 44 and flows into the interior, and air is discharged from the gap between the upper end surface of the rotor 33 and the substrate 38, and the rotor 33 and Air flow is promoted due to the viscosity of the air, thereby promoting cooling of parts provided near the rotor 33 and suppressing a rise in temperature of the device.

〔発明の効果〕〔Effect of the invention〕

上述した通り、本発明によれば、磁気ディスクの回転駆
動装置の回転子に外気を流入する開口部を形成したもの
であるから、簡単な構造で回転駆動体近傍の冷却が可能
となり、部品の実装密度を高めることができる。
As described above, according to the present invention, since the rotor of the magnetic disk rotation drive device is formed with an opening through which outside air flows in, the vicinity of the rotation drive body can be cooled with a simple structure, and the parts can be cooled. Packaging density can be increased.

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

第1図は本発明に係る磁気ディスクの回転駆動装置の一
実施例を示す断面図、第2図及び第3図は磁気記録再生
装置の構造を示すそれぞれ断面図及び平面図、第4図は
磁気ディスクのハブを示す平面図、第5図及び第6図は
磁気ディスクを回転駆動体へ装着した状態を示す断面図
である。 4・・・磁気ディスク、33・・・回転子、34・・・
回転軸。 35・・・ハウジング、38・・・基板、42・・・固
定子、43・・・磁性体、44・・・開口部。
FIG. 1 is a sectional view showing an embodiment of a magnetic disk rotation drive device according to the present invention, FIGS. 2 and 3 are a sectional view and a plan view showing the structure of a magnetic recording and reproducing device, respectively, and FIG. A plan view showing a hub of a magnetic disk, and FIGS. 5 and 6 are cross-sectional views showing a state in which the magnetic disk is mounted on a rotary drive body. 4...Magnetic disk, 33...Rotor, 34...
Axis of rotation. 35... Housing, 38... Substrate, 42... Stator, 43... Magnetic material, 44... Opening.

Claims (1)

【特許請求の範囲】[Claims] 1、基板のほぼ中央に固設された回転軸支持部と、この
回転軸と同芯状に前記基板の下面に配設された固定子と
、前記回転軸を介して前記回転軸支持部に回転自在に支
承された回転子と、前記固定子と対向してこの回転子に
配設された磁性体とを具備してなる磁気デイスクの回転
駆動装置において、前記回転子の中央部近傍に開口部を
形成したことを特徴とする磁気ディスクの回転駆動装置
1. A rotary shaft support fixed at approximately the center of the substrate, a stator disposed concentrically with the rotary shaft on the lower surface of the substrate, and a stator connected to the rotary shaft support through the rotary shaft. In a magnetic disk rotation drive device comprising a rotatably supported rotor and a magnetic body disposed on the rotor facing the stator, an opening is provided near the center of the rotor. What is claimed is: 1. A rotational drive device for a magnetic disk, characterized in that:
JP3640785A 1985-02-27 1985-02-27 Rotary driving device for magnetic disk Pending JPS61196464A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3640785A JPS61196464A (en) 1985-02-27 1985-02-27 Rotary driving device for magnetic disk

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3640785A JPS61196464A (en) 1985-02-27 1985-02-27 Rotary driving device for magnetic disk

Publications (1)

Publication Number Publication Date
JPS61196464A true JPS61196464A (en) 1986-08-30

Family

ID=12468983

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3640785A Pending JPS61196464A (en) 1985-02-27 1985-02-27 Rotary driving device for magnetic disk

Country Status (1)

Country Link
JP (1) JPS61196464A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6378364U (en) * 1986-11-12 1988-05-24
JPH0472360U (en) * 1990-11-02 1992-06-25
CN1068148C (en) * 1996-09-18 2001-07-04 三星电子株式会社 Spindle motor device for disc players

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6378364U (en) * 1986-11-12 1988-05-24
JPH0472360U (en) * 1990-11-02 1992-06-25
CN1068148C (en) * 1996-09-18 2001-07-04 三星电子株式会社 Spindle motor device for disc players

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