JPS58102367A - Access mechanism of magnetic disk device - Google Patents

Access mechanism of magnetic disk device

Info

Publication number
JPS58102367A
JPS58102367A JP20182681A JP20182681A JPS58102367A JP S58102367 A JPS58102367 A JP S58102367A JP 20182681 A JP20182681 A JP 20182681A JP 20182681 A JP20182681 A JP 20182681A JP S58102367 A JPS58102367 A JP S58102367A
Authority
JP
Japan
Prior art keywords
access arm
access
magnetic
coil
arm structure
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
JP20182681A
Other languages
Japanese (ja)
Inventor
Fumitake Shiraishi
白石 文武
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP20182681A priority Critical patent/JPS58102367A/en
Publication of JPS58102367A publication Critical patent/JPS58102367A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/54Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head into or out of its operative position or across tracks
    • G11B5/55Track change, selection or acquisition by displacement of the head
    • G11B5/5521Track change, selection or acquisition by displacement of the head across disk tracks

Landscapes

  • Moving Of Heads (AREA)

Abstract

PURPOSE:To disregard seeking time substantially, to shorten the positioning time of a magnetic head, and to speed up data processing by allowing access arm structures to swing independently of each other. CONSTITUTION:When a coil 12 is applied electric current, force corresponding to the current value operates on the coil 12 to left or right according to the current direction because of the relation of a mechanism body 1 with an upper magnetic circuit. Consequently, an upper access arm structure swing around a supporting shaft 15 to perform seeking operation. When a coil 14 is applied, on the other hand, a lower access arm structure 3 swings around the supporting shaft 15 to perform seeking operation. Those coils 12 and 14 are applied independently of each other, so access arm structure 2 and 3 swing independently on each other.

Description

【発明の詳細な説明】 本発明は、シーク時に磁気ヘッドを円弧を描いて移動さ
せるスウィングタイプのアクセスアームを備えた、磁気
ディスク装置のアクセス機構に関する。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an access mechanism for a magnetic disk drive that includes a swing type access arm that moves a magnetic head in an arc during a seek.

発明の技術的背景 従来、磁気ディスク装置のアクセス機構は、磁気回路を
有する機構本体と、磁気ディスク数の2倍のアクセスア
ーム群の一端に、上記磁気回路の磁束を横切って設けら
れる単一コイルを連結した回動自在な単一アクセスアー
ム構体とを備えて、形成されている。このアクセス機構
では、コイルへの通電がなされることにより、アクセス
アーム構体がスウィングして、その複数のアクセスアー
ムに取付けられた磁気へ,ドが、同時に対応する磁気デ
ィスクの所定の位置に対してシーク動作されるものであ
る。
TECHNICAL BACKGROUND OF THE INVENTION Conventionally, an access mechanism for a magnetic disk drive includes a mechanism main body having a magnetic circuit, and a single coil provided at one end of a group of access arms having twice the number of magnetic disks, across the magnetic flux of the magnetic circuit. and a rotatable single access arm structure connected to each other. In this access mechanism, when the coil is energized, the access arm structure swings, and the magnetic fields attached to the plurality of access arms are simultaneously moved to a predetermined position on the corresponding magnetic disk. This is a seek operation.

背景技術の問題点 このように全部の磁気ヘッドが同時にシーク動作される
従来のアクセス機構では、磁気ヘッドの位置決め時間が
長い欠点がある。
Problems with the Background Art The conventional access mechanism in which all the magnetic heads perform a seek operation simultaneously has a drawback that it takes a long time to position the magnetic heads.

発明の目的 本発明は上記の事情のもとに提案されたもので、その目
的は、シーク時間全実質的に無視させることにより、実
質的に磁気ヘッドの位置決め時間を短縮できる磁気ディ
スク装置のアクセス機構を提供することにある。
Purpose of the Invention The present invention has been proposed under the above circumstances, and its purpose is to provide access to a magnetic disk device that can substantially shorten the positioning time of a magnetic head by substantially ignoring the entire seek time. The goal is to provide a mechanism.

発明の概要 本発明は、二つ以上のアクセスアームからなるアクセス
アーム群の一端にコイルを連結して形成されるアクセス
アーム構体を、複数備え、これらを支軸に回動自在に夫
々支持し、これらアクセスアーム構体の互に独立して通
電される夫々のコイルを、複数の独立した磁気回路を有
する機構本体の各磁気回路中に位置するコアに夫々遊嵌
させ、これらコイルへの独立通電により、このアクセス
アーム構体に取付けた磁気ヘッドが書込み又は読出しを
している間に、他のアクセスアーム構体がシーク動作さ
れるようにした構成を特徴とするものである。
Summary of the Invention The present invention includes a plurality of access arm structures formed by connecting a coil to one end of an access arm group consisting of two or more access arms, each of which is rotatably supported around a support shaft, The independently energized coils of these access arm structures are loosely fitted into the cores located in each magnetic circuit of the mechanism main body, which has a plurality of independent magnetic circuits, and by independently energizing these coils. , is characterized by a structure in which, while the magnetic head attached to this access arm structure is writing or reading, other access arm structures are subjected to a seek operation.

発明の実施例 以下本発明の実施例を第1図および第2図を参照して説
明する。
Embodiments of the Invention Below, embodiments of the present invention will be described with reference to FIGS. 1 and 2.

同図に示した磁気ディスク装置のアクセス機構は、機構
本体1と一対のアクセスアーム構体2.3とを具備して
形成されている。なお、同図中D・・・は磁気ディスク
を多数枚積み重ねてなるディスク群である。
The access mechanism of the magnetic disk drive shown in the figure includes a mechanism body 1 and a pair of access arm structures 2.3. In the figure, D... is a disk group formed by stacking a large number of magnetic disks.

機構本体1は、略E字形をなしか、つ磁束を通すための
ヨーク4と、このヨーク4内に取付けた一対の永久磁石
5,6と、これら磁石5,6の先端に各別に取付けられ
たコア7.8とから形成されている。コア7の上下両面
はヨーク4の上側膜4aおよび中央脚4bの各先端部と
対向され、これらの対向面間には夫々磁気ギャップ9が
形成されている。また、コア8の上十両面はヨーク4の
中央脚4bおよび下側脚4cの各先端部と対向され、こ
れらの対向面間には夫々磁気ギャップ10が形成されて
いる。以上の構造の機構本体1は各コア7.8tl−各
別に通る互に独立した一対の磁気回路(第2図中実線大
印で示す)を有する。
The mechanism main body 1 has a substantially E-shape, and includes a yoke 4 for passing magnetic flux, a pair of permanent magnets 5 and 6 installed in the yoke 4, and a pair of permanent magnets 5 and 6 installed at the tips of these magnets 5 and 6, respectively. It is formed from a core 7.8. The upper and lower surfaces of the core 7 are opposed to the upper membrane 4a of the yoke 4 and the tips of the central leg 4b, and a magnetic gap 9 is formed between these opposed surfaces. Further, the upper ten surfaces of the core 8 are opposed to the respective tips of the central leg 4b and the lower leg 4c of the yoke 4, and a magnetic gap 10 is formed between these opposing surfaces, respectively. The mechanism main body 1 having the above structure has a pair of mutually independent magnetic circuits (indicated by large solid lines in FIG. 2) that pass through each core 7.8 tl separately.

一方のアクセスアーム1m(lr、r、複数のアクセス
アーム1)・・・相互を一端において互に連結したアク
セスアーム群11にの上記一端にコイル12を連結して
形成されている。他方のアクセスアーム構体3も同じ構
造であり、複数のアクセスアーム13・・・からなるア
クセスアーム群JJAの一端に、コイル14を連結して
形成されている。そして、これらアクセスアーム構体2
.3の各コイル12.14の通電は、互に独立して行わ
れるようになっている。なお、各アクセスアーム1ノ・
・・および13・・・の他端部vCは図示しないが磁気
ヘッドが取付けられる。アクセスアーム群11には、上
記ディスク群りの上半分に位置される磁気ディスクに対
する書込みおよび読出しを分担し、かつアクセスアーム
群13には、同ディスク8+Dの下手分に位置される磁
気ディスクに対する書込みおよび読出しを分担する。
One access arm 1m (lr, r, a plurality of access arms 1)... is formed by connecting a coil 12 to one end of an access arm group 11 that is connected to each other at one end. The other access arm structure 3 has the same structure, and is formed by connecting a coil 14 to one end of an access arm group JJA consisting of a plurality of access arms 13 . And these access arm structures 2
.. The energization of each coil 12 and 14 of No. 3 is performed independently of each other. In addition, each access arm 1 no.
. . . and 13 . . . A magnetic head is attached to the other end vC, although not shown. The access arm group 11 is responsible for writing to and reading from the magnetic disk located in the upper half of the disk group, and the access arm group 13 is responsible for writing to and reading from the magnetic disk located in the lower half of the disk 8+D. and share the reading.

一5= これら一対のアクセスアーム構体2,3は、そのアクセ
スアーム群11に、13kf貫通する例えば一本の支軸
15に回動自在に枢支されている。この支軸15は本実
施例の場合口形をなすハウジング16に上下両端部を固
定されている。ハウジング16は、支軸15を上記機構
本体1の近傍に位置されるようにして、磁気ディスク装
置の図示しない装置ベースに固定される。そして、この
ハウジング16の固定により、上記コイル12は上側の
磁気回路の磁束を横切ってコア7に遊嵌されるとともに
、コイル14は下側の磁気回路の磁束を横切ってコア8
に遊嵌される。これらの遊嵌状態によシアクセスアーム
構体2,3のスウィング動作が許容される。
15= These pair of access arm structures 2 and 3 are rotatably supported by, for example, one support shaft 15 passing through the access arm group 11 by 13 kf. In this embodiment, this support shaft 15 has both upper and lower ends fixed to a housing 16 which is shaped like a mouth. The housing 16 is fixed to a device base (not shown) of the magnetic disk device with the support shaft 15 positioned near the mechanism body 1. By fixing the housing 16, the coil 12 is loosely fitted into the core 7 across the magnetic flux of the upper magnetic circuit, and the coil 14 is loosely fitted into the core 7 across the magnetic flux of the lower magnetic circuit.
It is loosely fitted into. These loosely fitted states allow the access arm structures 2 and 3 to swing.

以上の構造のアクセス機構において、コイル12に通電
すると、その電流の向きに応じて機構本体1の上側の磁
気回路との関係で、コイル12に左方又は右方へ向けて
電流値に応じた力が作用する。このことによシ、上側の
アクセスアーム構体2が支軸15を中心にスウィングさ
6− れ、シーク動作がなされる。また、コイル14への通電
により、同様の理由により下側のアクセスアーム構体3
が支軸15を中心にスウィングされて、シーク動作がな
される。ところで、コイル12.14は互に独立して通
電されるため、各アクセスアーム構体2,3は互に独立
してスウィングされる。このため、一方のアクセスアー
ム構体2の図示しない磁気ヘッド群による読出し又は書
込みがなされている時に、他方のアクセスアーム構体3
にシーク動作を行わせることができる。すなわち、上記
の例で言えば、次にアクセスアーム構体3の磁気ヘッド
群で読出し又は畳込みをする場合には、シーク時間を不
袂とできるものである。このようにして、シーク時間を
実質的に無視することができるから、磁気ヘッド位置決
め時間を短縮することができる。なお亀以上のことから
、データはディスク群りの上部側の磁気ディスク群およ
び下側の磁気ディスク群に分担して記憶されることは勿
論である。
In the access mechanism having the above structure, when the coil 12 is energized, depending on the direction of the current, the coil 12 is directed to the left or right in relation to the upper magnetic circuit of the mechanism body 1, depending on the current value. Force acts. As a result, the upper access arm structure 2 is swung around the support shaft 15, and a seek operation is performed. Also, by energizing the coil 14, for the same reason, the lower access arm structure 3
is swung around the support shaft 15 to perform a seek operation. By the way, since the coils 12, 14 are energized independently of each other, each access arm structure 2, 3 is swung independently of each other. Therefore, when reading or writing is being performed by the magnetic head group (not shown) of one access arm structure 2, the other access arm structure 3
can perform a seek operation. That is, in the above example, when reading or convolution is performed next with the magnetic head group of the access arm structure 3, the seek time can be reduced. In this way, the seek time can be virtually ignored, so the magnetic head positioning time can be shortened. From the above, it goes without saying that data is stored in a divided manner in the upper magnetic disk group and the lower magnetic disk group of the disk group.

上鮎一実施例はアクセスアーム構体および磁気回路を夫
々一対設けた場合であるが、本発明においてはこれらは
夫々三つ以上でおってもよく、また、支軸は各アクセス
アーム構体に対して共用されず独立のものでもよい。そ
の他、本発明の実施に当っては、発明の要旨に反しない
限り、機構本体、コア、磁気ギャップ、磁気回路、支軸
、アクセスアーム構体、アクセスアーム、コイル等の具
体的な構造、形状、位置等は、上記実施例に制約される
ことなく種々の態様に構成して実施し得ることは勿論で
ある。
Although the first embodiment of Kamiayu is a case where one pair each of the access arm structure and the magnetic circuit are provided, in the present invention, there may be three or more of each of these, and the support shaft is provided for each access arm structure. It may be independent and not shared. In addition, in carrying out the present invention, unless it is contrary to the gist of the invention, specific structures, shapes, etc. of the mechanism body, core, magnetic gap, magnetic circuit, spindle, access arm structure, access arm, coil, etc. Of course, the positions and the like can be configured and implemented in various ways without being restricted to the above embodiments.

発明の詳細 な説明した本発明は、上記特許請求の範囲に記載の構成
を要旨とする。したがって、本発明によれば、複数のア
クセスアーム構体を備えて、これらを互に独立してスウ
ィング動作させるから、−のアクセスアーム構体に取伺
けた磁気ヘッドが書込み又は読出しをしている間に、他
のアクセスアーム構体をシーク動作させ得る。
The present invention, which has been described in detail, has the gist of the configuration described in the claims above. Therefore, according to the present invention, since a plurality of access arm structures are provided and these are operated to swing independently from each other, while the magnetic head that can reach the - access arm structure is writing or reading, , other access arm structures may be operated in a seek manner.

このため、シーク時間を実質的に無視でき、磁気ヘッド
の位置決め時間が短縮され、データ処理の高速化を図れ
る効果をイ」する。
Therefore, the seek time can be virtually ignored, the time for positioning the magnetic head is shortened, and data processing speed can be increased.

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

図面は本発明の一実施例を示L7、第1図は平面図、第
2図は分解余[視図である。 1・・・機構本体、2.3・・・アクセスアーム構体、
4・・・ヨーク、5,6・・・永久磁石、7,8・・・
コア、9.10・・磁気ギャップ、llk、13A・・
・アクセスアームp、12.14・・・コイル、15・
・・支軸、16・・・ハウソング。 出願人代理人  弁理士 鈴 江 武 彦=9− 矛1図
The drawings show one embodiment of the present invention, FIG. 1 is a plan view, and FIG. 2 is an exploded perspective view. 1... Mechanism main body, 2.3... Access arm structure,
4... Yoke, 5, 6... Permanent magnet, 7, 8...
Core, 9.10...Magnetic gap, llk, 13A...
・Access arm p, 12.14...Coil, 15・
...Spindle, 16... How song. Applicant's agent Patent attorney Takehiko Suzue=9- Figure 1

Claims (1)

【特許請求の範囲】[Claims] スウィングタイプのアクセスアームを備えた磁気ディス
ク装置のアクセス機構において、両側に磁気ギャップが
設けられた複数のコアを備えるとともに、これらコアを
各別に通る互に独立した複数の磁気回路を有する機構本
体と、この機構本体の近傍に設けられる支軸に回動自在
に枢支される複数のアクセスアーム群の一端に、上記コ
アに遊嵌するコイルを連結して形成された、上記磁気回
路と同数のアクセスアーム構体とを具備し、上記各アク
セスアーム構体の夫々のコイルは、各アーム構体が互に
独立してシーク動作すべく互に独立通電されることを特
徴とする磁気ディスク装置のアクセス機構。
An access mechanism for a magnetic disk drive equipped with a swing-type access arm includes a mechanism main body that includes a plurality of cores with magnetic gaps provided on both sides and a plurality of mutually independent magnetic circuits passing through each of the cores. , the same number of magnetic circuits as the magnetic circuits formed by connecting coils loosely fitted to the core are connected to one end of a plurality of access arm groups rotatably supported on a support shaft provided near the main body of the mechanism. 1. An access mechanism for a magnetic disk drive, comprising: an access arm structure, wherein the coils of each of the access arm structures are independently energized so that the arm structures perform seek operations independently of each other.
JP20182681A 1981-12-15 1981-12-15 Access mechanism of magnetic disk device Pending JPS58102367A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20182681A JPS58102367A (en) 1981-12-15 1981-12-15 Access mechanism of magnetic disk device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20182681A JPS58102367A (en) 1981-12-15 1981-12-15 Access mechanism of magnetic disk device

Publications (1)

Publication Number Publication Date
JPS58102367A true JPS58102367A (en) 1983-06-17

Family

ID=16447532

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20182681A Pending JPS58102367A (en) 1981-12-15 1981-12-15 Access mechanism of magnetic disk device

Country Status (1)

Country Link
JP (1) JPS58102367A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999016058A1 (en) * 1997-09-23 1999-04-01 Seagate Technology, Inc. Improved rotary disc drive actuator

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999016058A1 (en) * 1997-09-23 1999-04-01 Seagate Technology, Inc. Improved rotary disc drive actuator
US5991124A (en) * 1997-09-23 1999-11-23 Seagate Technology, Inc. Rotary disc drive actuator utilizing plural axially spaced and partially overlapped voice coils
GB2341479A (en) * 1997-09-23 2000-03-15 Seagate Technology Improved rotary disc drive actuator
GB2341479B (en) * 1997-09-23 2001-12-19 Seagate Technology Improved rotary disc drive actuator

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