JPH0438059B2 - - Google Patents
Info
- Publication number
- JPH0438059B2 JPH0438059B2 JP19424583A JP19424583A JPH0438059B2 JP H0438059 B2 JPH0438059 B2 JP H0438059B2 JP 19424583 A JP19424583 A JP 19424583A JP 19424583 A JP19424583 A JP 19424583A JP H0438059 B2 JPH0438059 B2 JP H0438059B2
- Authority
- JP
- Japan
- Prior art keywords
- carriage
- magnetic head
- positioning mechanism
- head positioning
- roller
- 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
Links
- 230000007246 mechanism Effects 0.000 claims description 36
- 230000005484 gravity Effects 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000004886 head movement Effects 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/48—Disposition 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
- G11B5/54—Disposition 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
Landscapes
- Moving Of Heads (AREA)
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は、磁気ヘツド移動機構に係り、更に詳
細には磁気デイスク装置において磁気ヘツドを高
精度に直線移動して位置決めすることができる磁
気ヘツド移動機構に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a magnetic head movement mechanism, and more particularly to a magnetic head movement mechanism capable of linearly moving and positioning a magnetic head with high precision in a magnetic disk device. Regarding the mechanism.
近年の磁気デイスク装置は、小型大容量化のニ
ーズにより情報の高密度記録が要求されており、
例えばトラツク密度が約1.000TPI（１インチ当り
のトラツク数）、データの記録密度が約
12.000BPI（１インチ当りのビツト数）に達して
いる。この様な磁気デイスク装置は、磁気ヘツド
を高密度なトラツク上に位置付けると共に安定的
に浮上可能な磁気ヘツド移動機構が必要である。
この機構による磁気ヘツドの位置付けは、予じめ
磁気デイスク上に記録された位置信号を追従する
トラツクサーボ方式が一般的であるが、このトラ
ツクサーボ方式においてはサーボ系を安定に動作
させるために機構系の共振周波数を数ＫHz以上に
することが必要である。
In recent years, magnetic disk devices have been required to record information at high density due to the need for smaller size and larger capacity.
For example, the track density is approximately 1.000 TPI (tracks per inch), and the data recording density is approximately
It has reached 12,000 BPI (bits per inch). Such a magnetic disk device requires a magnetic head moving mechanism that can position the magnetic head on a high-density track and stably float the magnetic head.
The positioning of the magnetic head using this mechanism is generally performed using a track servo method that follows position signals recorded in advance on a magnetic disk. It is necessary to increase the resonance frequency of the system to several KHz or higher.
しかしながら従来の磁気ヘツド位置決め機構
は、磁気ヘツドを支持するキヤリツジが、内外輪
が複数のころがり球を嵌合する所謂玉軸受によつ
て移動可能に構成され、該玉軸受を支持する機構
が複雑であるため、その機構部品の加工寸法誤差
により生じる幾可学的寸法変化によつて全体とし
ての機械的共振周波数の低下を招くことがあつ
た。従つて従来技術による磁気ヘツド位置付け機
構は、高精度な磁気ヘツド位置付けが困難である
と言う問題点を有していた。 However, in conventional magnetic head positioning mechanisms, the carriage supporting the magnetic head is movable by a so-called ball bearing in which inner and outer rings fit a plurality of rolling balls, and the mechanism for supporting the ball bearing is complicated. Therefore, geometrical dimensional changes caused by machining dimensional errors in the mechanical parts sometimes lead to a decrease in the mechanical resonance frequency as a whole. Therefore, the magnetic head positioning mechanism according to the prior art has a problem in that it is difficult to position the magnetic head with high precision.
一方、前記磁気ヘツド位置付け機構は、高密度
記録のため磁気ヘツドを0.5μm以下のスペーシン
グで安定的に浮上させる必要があるが、前記従来
の位置付け機構のキヤリツジを移動可能に支持す
る玉軸受がヘツドデイスクアツセンブリ（head
disk assembly：磁気デイスク，磁気ヘツド及び
その位置付け機構から成る構造体）内の高温状態
及び風力により、その潤滑剤を飛散して前記磁気
ヘツドと磁気デイスク間に侵入させ、ヘツドクラ
ツシユを招く原因となつていた。この様に、従来
の磁気ヘツド位置付け機構は、ヘツドクラツシユ
の原因の１つにもなると言う問題点を有してい
た。 On the other hand, the magnetic head positioning mechanism needs to stably levitate the magnetic head with a spacing of 0.5 μm or less for high-density recording, but the conventional positioning mechanism requires a ball bearing that movably supports the carriage. Head disk assembly (head)
The high temperature inside the disk assembly (a structure consisting of a magnetic disk, a magnetic head, and its positioning mechanism) and wind force can cause the lubricant to scatter and enter between the magnetic head and the magnetic disk, causing a head crash. Ta. As described above, the conventional magnetic head positioning mechanism has the problem of being one of the causes of head crash.
尚、この様な磁気ヘツド位置付け機構は、例え
ば特公昭55−7623号公報に記載されている。 Incidentally, such a magnetic head positioning mechanism is described in, for example, Japanese Patent Publication No. 55-7623.
〔発明の目的〕
本発明の目的は、前記従来技術の問題点を除去
することであり、共振周波数を数ＫHz以上にする
ことにより位置付け精度を向上できると共に、軸
受けから飛散する潤滑剤の発生を除去してヘツド
クラツシユを防止することができる磁気ヘツド位
置付け機構を提供することである。[Object of the Invention] An object of the present invention is to eliminate the problems of the prior art described above, and by increasing the resonance frequency to several KHz or more, it is possible to improve positioning accuracy and to prevent the generation of lubricant that scatters from the bearing. It is an object of the present invention to provide a magnetic head positioning mechanism that can be removed to prevent head crash.
上記目的を達成するために本発明による磁気ヘ
ツド位置決め機構は、キヤリツジがその複数側面
を転送面とし、キヤリツジ支持部が該キヤリツジ
の複数の転送面に押圧しながら回転するローラを
持ち、更に駆動源の作用点がキヤリツジ重心の移
動線上と一致することを第１の特徴とする。本発
明は、前記キヤリツジの転送面及びローラとの接
合部を凸及び凹形状に形成し、該凸凹部分の当接
によりキヤリツジの回転を防止することを第２の
特徴とする。更に本発明は、キヤリツジ支持部が
回転軸の外周溝を内方軌道とし、外輪の内周溝を
外周軌道として球を嵌合する内輪回転ローラ付軸
受によつて、該ローラを支持することを第３の特
徴とする。
In order to achieve the above object, the magnetic head positioning mechanism according to the present invention includes a carriage having a plurality of sides thereof as transfer surfaces, a carriage support portion having rollers that rotate while pressing against the plurality of transfer surfaces of the carriage, and a drive source. The first feature is that the point of action coincides with the line of movement of the carriage center of gravity. A second feature of the present invention is that the transfer surface of the carriage and the joint portion with the roller are formed in a convex and concave shape, and rotation of the carriage is prevented by contact of the concave and convex portions. Furthermore, the present invention provides that the carriage support section supports the roller by a bearing with an inner ring rotating roller into which a ball is fitted, with the outer circumferential groove of the rotating shaft serving as the inner raceway and the inner circumferential groove of the outer ring serving as the outer peripheral race. This is the third feature.
以下本発明の一実施例を図面を用いて詳細に説
明する。第１図は本実施例による磁気ヘツド位置
決め機構の全体分解組立斜視図、第２図は第１図
に示した位置決め機構の断面図、第３図は第２図
に示した位置決め機構の軸受部の部分拡大図であ
る。
An embodiment of the present invention will be described in detail below with reference to the drawings. 1 is an overall exploded perspective view of the magnetic head positioning mechanism according to this embodiment, FIG. 2 is a sectional view of the positioning mechanism shown in FIG. 1, and FIG. 3 is a bearing portion of the positioning mechanism shown in FIG. 2. FIG.
第１図に示した磁気ヘツド位置決め機構は、大
別して、磁気ヘツド群１を支持すると共に後述す
るローラ６ａ等により直線的に案内され、かつボ
イスコイル３と連結する連結部２ａを持つキヤリ
ツジ２と、サポート４に固着されると共に前記ロ
ーラ６ａを支持するローラガイド６が装着された
ローラサポート５と、前記ボイスコイル３が挿入
されるギヤツプ７ａを持ち、前記コイル３の巻線
部３ｂに電流が印加されることにより反発力を生
じてボイスコイル３に駆動力を与える磁石部７と
を備えている。このボイスコイル３及び磁石部７
は、所謂ボイスコイルモータ（VCM）を構成し、
ボイスコイル３に連結部２ａを介して連結された
キヤリツジ２を直線的に移動する駆動源となる。 The magnetic head positioning mechanism shown in FIG. 1 can be roughly divided into a carriage 2 that supports the magnetic head group 1, is guided linearly by rollers 6a, etc., which will be described later, and has a connecting portion 2a that is connected to the voice coil 3. , has a roller support 5 fixed to the support 4 and equipped with a roller guide 6 that supports the roller 6a, and a gap 7a into which the voice coil 3 is inserted, and a current is applied to the winding portion 3b of the coil 3. The magnet part 7 generates a repulsive force when applied to provide a driving force to the voice coil 3. This voice coil 3 and magnet part 7
constitutes a so-called voice coil motor (VCM),
It serves as a driving source for linearly moving the carriage 2 connected to the voice coil 3 via the connecting portion 2a.
前記ローラサポート５は、略々６角筒形状を成
し、120度間隔毎の３側面の開穴部５ａに各々前
記ローラガイド６が挿入されており、この複数の
ローラガイド６のローラ６ａが前記キヤリツジ２
の転送面２ｂに接する様に構成されている。ま
た、該サポート５は、前記開穴部５ａを持つ側面
以外の３側面にキヤリツジ２の連結部２ａが挿入
可能な溝５ｂをそれぞれ設けている。従つてボイ
スコイル３と結合されたキヤリツジ２は、転送面
２ｂが複数のローラ６ａに支持されると共に、ボ
イスコイル３と結合する連結部２ａが溝５ｂに挿
入可能のため、矢印Ａ方向に直線移動可能な様に
構成されている。 The roller support 5 has a substantially hexagonal cylinder shape, and the roller guides 6 are inserted into the openings 5a on three sides at intervals of 120 degrees, and the rollers 6a of the plurality of roller guides 6 Said carriage 2
The transfer surface 2b is configured so as to be in contact with the transfer surface 2b. Further, the support 5 has grooves 5b into which the connecting portion 2a of the carriage 2 can be inserted, respectively, on three side surfaces other than the side surface having the aperture 5a. Therefore, the carriage 2 coupled with the voice coil 3 is linearly moved in the direction of arrow A because the transfer surface 2b is supported by the plurality of rollers 6a and the connecting portion 2a coupled with the voice coil 3 can be inserted into the groove 5b. It is configured to be movable.
この磁気ヘツド位置決め機構は、ボイスコイル
３及び永久磁石７から成るボイスコイルモータの
駆動中心点（円筒コイルボビン３の軸線上）とキ
ヤリツジ２の重心が同一線上に位置する、換言す
ればキヤリツジ２の重心に対して駆動力が発生す
るため、キヤリツジ２の傾れ等が発生せず安定的
にキヤリツジ２を駆動することができる。尚、キ
ヤリツジの重心と駆動点とが異なる線上の場合、
モーメントによりキヤリツジの傾れが生じること
は言うまでもない。 In this magnetic head positioning mechanism, the center of gravity of the carriage 2 is located on the same line as the drive center point of the voice coil motor (on the axis of the cylindrical coil bobbin 3) consisting of the voice coil 3 and the permanent magnet 7. In other words, the center of gravity of the carriage 2 is located on the same line. Since a driving force is generated against the shaft, the carriage 2 can be stably driven without tilting of the carriage 2 or the like. In addition, if the center of gravity of the carriage and the driving point are on different lines,
Needless to say, the moment causes the carriage to tilt.
さて、本実施例によるキヤリツジ２の案内は、
第２図及び第３図にその詳細を示すローラサポー
ト５によつて行なわれる。該ローラサポート５
は、第２図に示す如く、３方向の開口部５ａに挿
入されたローラガイド６の前後方向２つのローラ
６ａが、キヤリツジ２のやや凹みをおびた転送面
２ｂに当接することにより、キヤリツジ２を移動
方向軸線に対して回転しない様に構成されてい
る。即ち、ローラ６ａは、外周面が断面凸形状を
しており、この凸部と転送面２ｂの凹部が、等間
隔をもつて配置されて互いにローラ６ａの凸部が
転送面２ｂの凹部に落ち込む様に作用するため、
結果的にキヤリツジ２は、移動軸線に対しての回
転を阻止され、安定的に直線移動するものであ
る。本実施例におけるローラサポート５は、図示
していないが、組立後の熱変位等を吸収するため
のスプリングを１つのローラガイド６に設け、３
つのローラ６ａの内、１つのローラ６ａが転送面
２ｂの凹部に押圧する様に構成されている。 Now, the guidance of the carriage 2 according to this embodiment is as follows.
This is accomplished by a roller support 5, the details of which are shown in FIGS. 2 and 3. The roller support 5
As shown in FIG. 2, the two rollers 6a in the front and rear directions of the roller guide 6 inserted into the openings 5a in three directions contact the slightly concave transfer surface 2b of the carriage 2, so that the carriage 2 is configured so as not to rotate with respect to the axis of movement. That is, the outer peripheral surface of the roller 6a has a convex cross section, and the convex portion and the concave portion of the transfer surface 2b are arranged at equal intervals, so that the convex portion of the roller 6a falls into the concave portion of the transfer surface 2b. Because it acts like
As a result, the carriage 2 is prevented from rotating with respect to the axis of movement and stably moves linearly. Although not shown in the drawings, the roller support 5 in this embodiment has one roller guide 6 provided with a spring for absorbing thermal displacement etc. after assembly.
Of the two rollers 6a, one roller 6a is configured to press against the recessed portion of the transfer surface 2b.
これら機構によりキヤリツジが回転しない原理
を念のため第４図を用いて説明する。第４図は、
第３図に示したキヤリツジ支持機構の原理を示す
図であり、第３図と同符号のものは同一のものを
示すものとする。第４図に示したキヤリツジ２
は、移動軸線との垂直面（図面平面）に対して
120度間隔毎に外部に向つた凹部を持つ転送面２
ａを３方向に有し、図面右上方向及び下方の転送
面２ａの凹部にはそれぞれ回転可能に固着される
ローラ６ａが当接されていると共に、図面左上方
の転送面２ａの凹部には前記移動軸線方向にロー
ラ６ａがスプリング１００により押圧されてい
る。この場合、前記左上方のスプリング１００に
より発生する押圧力１００Ａが、他のローラ６ａ
に向う押圧力１００Ｂ及び１００Ｃとして分割さ
れ、それぞれのローラ６ａと凹部が押圧されると
共に、この押圧によりたとえ転送面２ａの凹部が
回転しそうになつても凹部の底部がローラ６ａの
凸部頂点に位置付けし様とする復原力が働くた
め、結果的にキヤリツジ２は回転することなく軸
方向移動が可能である。 The principle of preventing the carriage from rotating due to these mechanisms will be explained using FIG. 4 just in case. Figure 4 shows
4 is a diagram showing the principle of the carriage support mechanism shown in FIG. 3, and the same reference numerals as in FIG. 3 indicate the same parts. FIG. Carriage 2 shown in Figure 4
is relative to the plane perpendicular to the movement axis (drawing plane)
Transfer surface 2 with outward facing recesses every 120 degrees
a in three directions, and rotatably fixed rollers 6a are in contact with the recesses of the transfer surface 2a at the upper right and lower sides of the drawing, respectively, and the recesses of the transfer surface 2a at the upper left of the drawing are provided with the rollers 6a. The roller 6a is pressed by a spring 100 in the direction of the moving axis. In this case, the pressing force 100A generated by the upper left spring 100 is applied to the other roller 6a.
The pressure is divided into pressure forces 100B and 100C toward the roller 6a, and the respective rollers 6a and the recesses are pressed, and even if the recesses of the transfer surface 2a are about to rotate, the bottom of the recesses will not reach the apex of the protrusion of the roller 6a. Since a restoring force acts to position the carriage 2, it is possible to move the carriage 2 in the axial direction without rotating.
更に本実施例による磁気ヘツド移動機構は、第
３図にその詳細を示す如く、前記ローラガイド６
が、ローラ６ａの回転軸６ｄを直接的に球６ｂに
よつて回転可能に支持する内輪回転ローラ付軸受
を有している。この内輪回転ローラ付軸受は、内
輪を持つことなく、外輪６ｃの内周溝を外周軌道
とし、軸６ｄの外周溝を内周軌道として球６ｂを
嵌合した一体構造であつて、軸６ｄがベアリング
６ｄにより回転されるものである。本実施例によ
る軸受は、該内輪回転ローラ付軸受を持つローラ
ガイド６をローラサポート５にネジ５１によつて
固定する簡易構造のため、内外輪の組立及び経年
誤差も生じず各部品の機械加工の寸法誤差に起因
する機械的共振周波数の低下を防止することがで
きる。 Furthermore, the magnetic head moving mechanism according to this embodiment has the roller guide 6 as shown in detail in FIG.
However, it has an inner rotary roller bearing that rotatably supports the rotating shaft 6d of the roller 6a directly by the ball 6b. This bearing with an inner ring rotating roller does not have an inner ring, but has an integral structure in which the inner groove of the outer ring 6c is used as the outer circumferential orbit, and the outer circumferential groove of the shaft 6d is used as the inner peripheral orbit and the balls 6b are fitted. It is rotated by a bearing 6d. The bearing according to this embodiment has a simple structure in which the roller guide 6, which has the bearing with the inner ring rotating roller, is fixed to the roller support 5 with screws 51, so assembly of the inner and outer rings and machining of each part can be performed without causing errors over time. It is possible to prevent a decrease in the mechanical resonance frequency due to dimensional errors.
従つて本実施例による磁気ヘツド位置決め機構
は、キヤリツジ２を安定的に支持可能であると共
に共振周波数を高くすることができるため、トラ
ツクサーボ方式を用いても磁気ヘツドを磁気デイ
スク上の所望トラツクに高精度で位置付けること
ができる。 Therefore, since the magnetic head positioning mechanism according to this embodiment can stably support the carriage 2 and increase the resonance frequency, it is possible to position the magnetic head on a desired track on the magnetic disk even if a track servo system is used. Can be positioned with high precision.
また、本実施例による前記内輪回転ローラ付軸
受は、軸が内輪回転を行なうために従来の内外輪
を持つ軸受に比べてグリースの飛散が少なく、磁
気ヘツドと磁気デイスク間に塵埃が侵入して発生
するヘツドクラツシユを防止することができる。
同時に軸受の長寿命化を計ることができる。 In addition, in the bearing with the inner ring rotating roller according to this embodiment, since the shaft rotates the inner ring, there is less grease scattering compared to a conventional bearing with inner and outer rings, and there is no possibility of dust entering between the magnetic head and the magnetic disk. It is possible to prevent head crashes from occurring.
At the same time, it is possible to extend the life of the bearing.
尚、上記実施例においては、キヤリツジの転送
面に設けた凹部とローラの凸部とを当接する例を
示したが本発明はこれに限られることなく、例え
ば第５図に示す如く、キヤリツジ２０に移動方向
軸線に沿つていると共に半径R3成る凸部を設け、
更にローラ６０ａの外周面に該半径R3より大な
る半径R4をもつて理設した凹部を設け、これら
凸部及び凹部を当接させてキヤリツジ２０を図面
垂直方向に移動可能に構成しても良い。また、前
記実施例においては、キヤリツジを略々６角円柱
形としてその内３面をローラと当接する転送面、
他３面をボイスコイルと連結する面としたが、本
発明はこれに限られるものではなく、キヤリツジ
を略々８角円柱形等にしても本発明を実施するこ
とができる。更に、キヤリツジとボイスコイルと
の連結は、キヤリツジの後端で行なつても良い。 Incidentally, in the above embodiment, an example was shown in which the concave portion provided on the transfer surface of the carriage and the convex portion of the roller are in contact with each other, but the present invention is not limited to this, and for example, as shown in FIG. A convex portion is provided along the axis of movement direction and has a radius of R 3 ,
Further, a concave portion having a radius R4 larger than the radius R3 is provided on the outer circumferential surface of the roller 60a, and the carriage 20 is configured to be movable in the direction perpendicular to the drawing by bringing the convex portion and the concave portion into contact with each other. Also good. Further, in the above embodiment, the carriage has a substantially hexagonal cylindrical shape, and three surfaces thereof are in contact with the roller;
Although the other three surfaces are used as surfaces to be connected to the voice coil, the present invention is not limited to this, and the present invention can be practiced even if the carriage is formed into a substantially octagonal cylinder shape or the like. Furthermore, the carriage and voice coil may be connected at the rear end of the carriage.
以上述べた如く本発明によれば、キヤリツジの
移動方向重心とボイスコイルモータの駆動点とを
一致させると共にキヤリツジの軸受を簡素構造と
したため、磁気ヘツドをトラツクサーボ方式を用
いても安定的に磁気デイスク面の所望トラツクに
高精度位置決めが可能である磁気ヘツド位置決め
機構を提供することができる。
As described above, according to the present invention, the center of gravity in the moving direction of the carriage and the driving point of the voice coil motor are made to coincide with each other, and the bearing of the carriage has a simple structure. It is possible to provide a magnetic head positioning mechanism capable of highly accurate positioning to a desired track on a disk surface.
第１図は本発明による磁気ヘツド位置決め機構
の一実施例を示す斜視図、第２図は第１図に示し
た位置決め機構の断面図、第３図は第２の軸受部
の部分拡大図、第４図は第２図に示したキヤリツ
ジ回転防止構造の原理説明図である。第５図は本
発明の他の実施例を示す図である。
符号の説明、１…磁気ヘツド群、２…キヤリツ
ジ、２ａ…連結部、２ｂ…転送面、３…ボイスコ
イル、３ｂ…巻線部、５…ローラサポート、５ａ
…開口部、５ｂ…溝、６…ローラガイド、６ａ…
ローラ、６ｂ…ベアリング、６ｃ…外輪、６ｄ…
回転軸、７…永久磁石、７ａ…ギヤツプ部。
FIG. 1 is a perspective view showing an embodiment of the magnetic head positioning mechanism according to the present invention, FIG. 2 is a sectional view of the positioning mechanism shown in FIG. 1, and FIG. 3 is a partially enlarged view of the second bearing part. FIG. 4 is an explanatory diagram of the principle of the carriage rotation prevention structure shown in FIG. 2. FIG. 5 is a diagram showing another embodiment of the present invention. Explanation of symbols: 1...Magnetic head group, 2...Carriage, 2a...Connecting section, 2b...Transfer surface, 3...Voice coil, 3b...Winding section, 5...Roller support, 5a
...opening, 5b...groove, 6...roller guide, 6a...
Roller, 6b...bearing, 6c...outer ring, 6d...
Rotating shaft, 7... permanent magnet, 7a... gap part.
Claims (1)
ヤリツジを直線移動可能に支持するキヤリツジ支
持部と、該キヤリツジを直線的に駆動する駆動源
を備える磁気ヘツド位置決め機構において、前記
キヤリツジは、その外周面に移動方向軸線と平行
な方向に延びると共に前記移動方向軸線を中心と
して所定角度毎に設けられた転送面を少なくとも
３面有し、前記キヤリツジ支持部は、前記キヤリ
ツジの複数の転送面を移動軸線に向い合う様に押
圧する複数のローラを有し、前記駆動源の作用点
は、前記キヤリツジの直線移動に伴う重心移動線
上と一致していることを特徴とする磁気ヘツド位
置決め機構。 ２ 特許請求の範囲第１項記載の磁気ヘツド位置
決め機構において、前記キヤリツジの転送面が前
記軸方向に沿つて半径R1成る凹部を持ち、前記
キヤリツジ支持部のローラが該凹部に接触回転す
ると共に回転軸に対して平行断面が該半径R1よ
り大きい半径R2成る凸形状であることを特徴と
する磁気ヘツド位置決め機構。 ３ 特許請求の範囲第１項記載の磁気ヘツド位置
決め機構において、前記キヤリツジの転送面が前
記軸方向に沿つて半径R3成る凸部を持ち、前記
キヤリツジ支持部のローラが該凸部と接触回転す
ると共に回転軸に対して平行断面が該半径R3よ
り大きい半径R4成る凹形状であることを特徴と
する磁気ヘツド位置決め機構。 ４ 特許請求の範囲第２項又は第３項記載の磁気
ヘツド位置決め機構において、前記キヤリツジ支
持部が、回転軸の外周溝を内方軌道とし、外輪の
内周溝を外周軌道として球を嵌合する内輪回転ロ
ーラ付軸受によつて、前記ローラを回転可能に支
持していることを特徴とする磁気ヘツド位置決め
機構。[Scope of Claims] 1. A magnetic head positioning mechanism comprising a carriage that supports a group of magnetic heads, a carriage support section that supports the carriage in a linearly movable manner, and a drive source that linearly drives the carriage, wherein the carriage has at least three transfer surfaces extending in a direction parallel to the movement direction axis on its outer peripheral surface and provided at predetermined angle intervals around the movement direction axis; Magnetic head positioning comprising a plurality of rollers that press the transfer surface to face the movement axis, and the point of action of the drive source is aligned with a line of gravity movement as the carriage moves linearly. mechanism. 2. In the magnetic head positioning mechanism according to claim 1, the transfer surface of the carriage has a recess with a radius R1 along the axial direction, and the roller of the carriage support rotates in contact with the recess. A magnetic head positioning mechanism characterized in that the cross section parallel to the rotation axis has a convex shape with a radius R2 larger than the radius R1 . 3. In the magnetic head positioning mechanism according to claim 1, the transfer surface of the carriage has a convex portion having a radius R 3 along the axial direction, and the roller of the carriage support portion rotates in contact with the convex portion. A magnetic head positioning mechanism characterized in that the magnetic head positioning mechanism has a concave shape in which a cross section parallel to the rotation axis has a radius R4 larger than the radius R3 . 4. In the magnetic head positioning mechanism according to claim 2 or 3, the carriage support portion fits the ball with the outer circumferential groove of the rotating shaft as the inner orbit and the inner circumferential groove of the outer ring as the outer circumferential orbit. A magnetic head positioning mechanism characterized in that the roller is rotatably supported by a bearing with an inner rotating roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19424583A JPS6087473A (en) | 1983-10-19 | 1983-10-19 | Magnetic head positioning mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19424583A JPS6087473A (en) | 1983-10-19 | 1983-10-19 | Magnetic head positioning mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6087473A JPS6087473A (en) | 1985-05-17 |
| JPH0438059B2 true JPH0438059B2 (en) | 1992-06-23 |
Family
ID=16321393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19424583A Granted JPS6087473A (en) | 1983-10-19 | 1983-10-19 | Magnetic head positioning mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6087473A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2523510B2 (en) * | 1986-07-02 | 1996-08-14 | 株式会社日立製作所 | Magnetic disk device |
-
1983
- 1983-10-19 JP JP19424583A patent/JPS6087473A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6087473A (en) | 1985-05-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20020171972A1 (en) | Recording disk drive and method of assembling the same | |
| US5112147A (en) | Rotating support apparatus in disk storage device | |
| WO2001001417A1 (en) | Actuator bearing cartridge for disc storage system | |
| JPH0438059B2 (en) | ||
| KR100416616B1 (en) | Hard disk drive having a disk locking device | |
| JP2572534B2 (en) | Disk drive unit | |
| JPS632119A (en) | Optical head driver | |
| JPH0313822B2 (en) | ||
| JP2000268485A (en) | Information recording and reproducing device | |
| US20240079034A1 (en) | Recording and reproducing device | |
| US20240079029A1 (en) | Recording and reproducing device | |
| JP2888263B2 (en) | Carriage stopper in magnetic disk drive | |
| JP3264546B2 (en) | Actuator lock mechanism and recording / reproducing apparatus using the same | |
| JPS6343630Y2 (en) | ||
| JP3353941B2 (en) | Support device for linear moving members | |
| JPH06215339A (en) | Magnetic disk device as well as actuator and spindle | |
| JPH0666318A (en) | Rotary mechanism | |
| JP2791041B2 (en) | Disk drive | |
| JPH09293323A (en) | Rotating mechanism and disk apparatus | |
| JPH0142070B2 (en) | ||
| JP3276713B2 (en) | Linear guide mechanism | |
| JP2611245B2 (en) | Positioning carriage for magnetic disk drive | |
| JPH0531714Y2 (en) | ||
| JP2652987B2 (en) | Magnetic disk drive | |
| JP3724629B2 (en) | Head slider |