JPH06180832A - Magnetic head - Google Patents

Magnetic head

Info

Publication number
JPH06180832A
JPH06180832A JP33442592A JP33442592A JPH06180832A JP H06180832 A JPH06180832 A JP H06180832A JP 33442592 A JP33442592 A JP 33442592A JP 33442592 A JP33442592 A JP 33442592A JP H06180832 A JPH06180832 A JP H06180832A
Authority
JP
Japan
Prior art keywords
head
spring
protective tube
magnetic
load
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
JP33442592A
Other languages
Japanese (ja)
Inventor
Tetsuo Masukawa
哲男 益川
Shigeo Nakamura
滋男 中村
Tomio Nakamura
富雄 中村
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 JP33442592A priority Critical patent/JPH06180832A/en
Publication of JPH06180832A publication Critical patent/JPH06180832A/en
Pending legal-status Critical Current

Links

Landscapes

  • Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
  • Supporting Of Heads In Record-Carrier Devices (AREA)

Abstract

PURPOSE:To prevent the load of a supporting spring from dispersing by the influence of the rigidity of a protective tube. CONSTITUTION:In a floating magnetic head with a head supporting spring plate (rod beam) 2 of which a part is attached to a mount 7 and on which a head slider 4 is attached to the other end through a gimbal 6, when a protective tube 1 in which a lead wire 5 for signal-transferring and to a conversion element is inserted through, is arranged along with the side edge flange 8 of the supporting spring 2, the lead wire 5 is exposed by cutting the protective tube 1 at the place of the spring part (easily bendable part) 3 of the supporting spring 2 by a proper cutting distance L. By this, the influence of the rigidity of the protective tube 1 is eliminated, the dispersion of spring load is eliminated, and that of the head floating height is eliminated.

Description

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

【0001】[0001]

【産業上の利用分野】本発明は、磁気ディスク装置用の
磁気ヘッドに係り、特に、磁気ヘッドの浮上量の製造ば
らつきを小さくし、磁気ディスク装置の性能および信頼
性を向上させるのに適した磁気ヘッドに関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic head for a magnetic disk device, and more particularly, it is suitable for reducing manufacturing variations in the flying height of the magnetic head and improving the performance and reliability of the magnetic disk device. Regarding magnetic heads.

【0002】[0002]

【従来の技術】磁気ディスク上に磁気ヘッドを浮動さ
せ、情報の記録・再生を行う磁気ディスク装置はこの分
野でよく知られている。
2. Description of the Related Art A magnetic disk device which floats a magnetic head on a magnetic disk to record / reproduce information is well known in the art.

【0003】この浮上型磁気ヘッドは、磁気変換素子を
備えた磁気ヘッドスライダ及びそのスライダを支持する
磁気ヘッド支持ばねにより構成されている。
This flying type magnetic head is composed of a magnetic head slider having a magnetic conversion element and a magnetic head support spring for supporting the slider.

【0004】一般に、磁気ディスク装置の開発方針の1
つとして、高記録密度化がある。磁気ディスク装置の高
記録密度化をはかる一手段として、磁気変換素子と磁気
ディスク媒体のスペ−シングを狭め、いわゆるスペ−シ
ング・ロスを減少させるという方法が従来より行なわれ
ている。一方、そのスペ−シングすなわちヘッドスライ
ダの浮上量は、製造時のばらつき及び磁気ディスク装置
動作時の動的変動により、変動が生じる。この浮上量の
変動により、時にはヘッドスライダが磁気ディスクに衝
突し、ひどい場合にはディスク媒体上の情報を破壊する
に至る。したがって、安定して浮上するヘッドスライダ
及びその支持ばねが必要となる。
Generally, one of the development policies for magnetic disk devices is
One of them is to increase the recording density. As a means for increasing the recording density of a magnetic disk device, a method of narrowing the spacing between the magnetic conversion element and the magnetic disk medium to reduce so-called spacing loss has been conventionally performed. On the other hand, the spacing, that is, the flying height of the head slider fluctuates due to variations during manufacturing and dynamic fluctuations during operation of the magnetic disk device. Due to the fluctuation of the flying height, the head slider sometimes collides with the magnetic disk, and in severe cases, the information on the disk medium is destroyed. Therefore, a head slider that stably flies and a supporting spring thereof are required.

【0005】従来の磁気ディスク装置では、例えば特公
昭57−569号公報に示されるような磁気ヘッドスラ
イダや、特公昭58−22827号公報に示されるよう
な磁気ヘッド支持ばねが用いられ、またそれらを基本と
して改良されたものが上記の技術的要求を実現するもの
として広く用いられてきている。
In a conventional magnetic disk apparatus, for example, a magnetic head slider as shown in Japanese Patent Publication No. 57-569 and a magnetic head support spring as shown in Japanese Patent Publication No. 58-22827 are used, and they are also used. What has been improved on the basis of has been widely used to realize the above technical requirements.

【0006】なお、本発明に関連する公知の浮上型磁気
ヘッドとしては、上記特公昭58−22827号公報の
記載のものを基本として改良した実開昭63−1811
08号公報、特開昭64−37784号公報に示される
磁気ヘッドがあるが、これらの公知の磁気ヘッドは、い
ずれも支持ばね板の側縁に沿って磁気変換素子との信号
の授受を行なうリード線の保護チューブを這わせてい
る。
As a known flying type magnetic head relating to the present invention, the improved magnetic head described in Japanese Patent Publication No. 58-22827 is used as a basic improvement.
There are magnetic heads disclosed in Japanese Patent Application Laid-Open No. 08-38, and Japanese Patent Application Laid-Open No. 64-37784, and all of these known magnetic heads exchange signals with the magnetic conversion element along the side edge of the supporting spring plate. The protective tube of the lead wire is crawling.

【0007】[0007]

【発明が解決しようとする課題】ヘッドスライダの浮上
量変化の原因としては、ヘッドスライダ及びヘッド支持
ばねの製造ばらつき(製造時に発生するばらつき)によ
り、浮上量の製造ばらつきを生じさせる。また、磁気デ
ィスク装置動作時には、磁気ヘッドのシ−ク動作に伴う
外力や、ディスク間空気流に伴う外力等のさまざまな外
力を受けるため、ヘッドスライダの浮上量は動的に変動
する。このような製造ばらつき、あるいは動的変動によ
り、ヘッド浮上量が低下すると時にはヘッドスライダが
磁気ディスク装置に衝突し、ひどい場合にはディスク媒
体上の情報を破壊するに至る。したがって製造ばらつき
を低減し、また、動的浮上量変動を低減する必要があ
る。ことに近年、磁気ディスク装置の高記録密度化に伴
い、浮上量そのものが狭小化されてきており、ますます
その必要性が生じている。
The variation in the flying height of the head slider is caused by manufacturing variations in the head slider and the head support spring (variations that occur during manufacturing), which causes manufacturing variations in the flying height. Further, during operation of the magnetic disk device, various flying forces such as an external force associated with the seek operation of the magnetic head and an external force associated with the air flow between the disks are received, so that the flying height of the head slider dynamically changes. When the head flying height decreases due to such manufacturing variations or dynamic fluctuations, the head slider sometimes collides with the magnetic disk device, and in severe cases, the information on the disk medium is destroyed. Therefore, it is necessary to reduce manufacturing variability and dynamic levitation variation. Especially, in recent years, as the recording density of the magnetic disk device has been increased, the flying height itself has been narrowed, and the necessity for it has arisen more and more.

【0008】ヘッド浮上量の製造ばらつきの要因には様
々なものがあるが、要因の一つとしてヘッド支持ばねの
ばね荷重の製造ばらつきがあげられる。ヘッド浮上量の
狹小化のためには、ヘッド支持ばねのばね荷重の小さい
ものが使用されるようになって来た。本発明者によれ
ば、このようなばね荷重の小さい支持ばねを用いた磁気
ヘッドでは、ヘッド支持ばねのばね荷重の製造ばらつき
の要因の一つとして、磁気変換素子との信号の授受を行
うリ−ド線の保護チュ−ブの実装構造が無視できない原
因となることがわかった。例えば、この種のヘッドで
は、ばね荷重のばらつきの許容範囲は±0.25grの
ように狹い範囲とされなければならないが、保護チュー
ブを取付けるとばらつきが±0.30〜±0.35gr
のように広がってしまうことがわかった。
There are various factors in the manufacturing variation of the head flying height, and one of the factors is the manufacturing variation of the spring load of the head supporting spring. In order to reduce the flying height of the head, a head support spring having a small spring load has been used. According to the present inventor, in the magnetic head using such a support spring having a small spring load, as one of the factors of manufacturing variation of the spring load of the head support spring, a signal is exchanged with the magnetic conversion element. -It has been found that the mounting structure of the protective cable for the lead wire is a factor that cannot be ignored. For example, in this type of head, the allowable range of variation in spring load must be within a narrow range of ± 0.25 gr, but when a protective tube is attached, the variation is ± 0.30 to ± 0.35 gr.
I found that it spreads like.

【0009】図2は上記従来の磁気ヘッドの一例を示し
ている。ジンバル6、ロ−ドビ−ム板2、マウント7よ
りなるヘッド支持ばねに磁気ヘッドスライダ4が接着に
より実装されている。磁気ヘッドスライダ4の磁気変換
素子には信号の授受を行うリ−ド線5が接続されており
リ−ド線5は保護チュ−ブ1の中を通って装置の回路基
板側へと伸びている。保護チュ−ブ1はヘッド支持ばね
に実装される。実装方法には数種類あるが、狭いディス
ク間隔を実現するために、図2に示すようにロードビー
ム板2の両側縁のフランジ8の1つに沿って実装する実
装方法が一般に用いられている。このような実装方法
は、保護チュ−ブ1が剛性を持つために、ヘッド支持ば
ねのばね荷重がばらつく要因のひとつであった。
FIG. 2 shows an example of the above conventional magnetic head. A magnetic head slider 4 is mounted on a head supporting spring composed of a gimbal 6, a rod beam plate 2 and a mount 7 by adhesion. A lead wire 5 for transmitting and receiving signals is connected to the magnetic conversion element of the magnetic head slider 4, and the lead wire 5 extends through the protective tube 1 toward the circuit board side of the device. There is. The protective tube 1 is mounted on the head support spring. Although there are several types of mounting methods, in order to realize a narrow disc space, a mounting method of mounting along one of the flanges 8 on both side edges of the load beam plate 2 as shown in FIG. 2 is generally used. Such a mounting method is one of the factors that the spring load of the head support spring varies because the protective tube 1 has rigidity.

【0010】従って、本発明の目的は、上記従来技術の
問題点を解決し、保護チュ−ブがヘッド支持ばねのばね
荷重に与える影響をなくすことによって、ヘッド支持ば
ねのばね荷重の製造ばらつきを低減し、それによってヘ
ッド浮上量の製造ばらつきを低減し、磁気ディスク装置
の性能および信頼性を向上させるのに適した磁気ヘッド
を提供することにある。
Therefore, an object of the present invention is to solve the above-mentioned problems of the prior art and to eliminate the influence of the protective tube on the spring load of the head support spring, so that the manufacturing load of the spring load of the head support spring can be prevented. It is to provide a magnetic head suitable for reducing the manufacturing variation of the flying height of the head and thereby improving the performance and reliability of the magnetic disk device.

【0011】[0011]

【課題を解決するための手段】上記目的を達成するため
に、本発明は、一端にヘッドスライダが取付けられ他端
がマウントに取付けられその間にばね部を有するヘッド
支持ばねと、前記ヘッド支持ばね上に配置され信号授受
用リード線を挿通する保護チューブとを備えた磁気ディ
スク装置用磁気ヘッドにおいて、前記保護チューブを前
記ばね部において切断した構成とする。
In order to achieve the above object, the present invention relates to a head support spring having a head slider attached to one end and a mount attached to the other end and a spring portion therebetween, and the head support spring. In a magnetic head for a magnetic disk device, which is provided above and has a protective tube through which a signal transmitting / receiving lead wire is inserted, the protective tube is cut at the spring portion.

【0012】[0012]

【作用】上記構成に基づく作用を説明する。The operation based on the above configuration will be described.

【0013】本発明によれば、保護チューブを支持ばね
のばね部のところで切断した構成を採用したので、保護
チューブの剛性が支持ばねのばね荷重に与える影響はほ
とんどなくなり、その結果、チュ−ブ実装に伴うヘッド
支持ばねのばね荷重の製造ばらつきが無くなる。これに
よりヘッド浮上量の製造ばらつきが低減される。
According to the present invention, since the protection tube is cut at the spring portion of the support spring, the rigidity of the protection tube has almost no influence on the spring load of the support spring. Manufacturing variations in the spring load of the head support spring due to mounting are eliminated. This reduces manufacturing variations in head flying height.

【0014】さらに、チュ−ブの径時変化に伴うヘッド
支持ばねのばね荷重の径時変化が無くなり、ヘッド浮上
量の径時変化が低減される作用もある。
Further, there is also an effect that the change over time in the spring load of the head support spring due to the change over time in the tube is eliminated, and the change in head flying height over time is reduced.

【0015】[0015]

【実施例】以下に、本発明の実施例を図面により説明す
る。
Embodiments of the present invention will be described below with reference to the drawings.

【0016】図1は本発明の一実施例の磁気ヘッドの平
面図を示し、図2と同一名称の部分には同一符号を付し
てある。2はロードビーム(ヘッド支持ばね板)で、そ
の一端に磁気ヘッドスライダ4を接着したジンバル6が
取付けられ、他端は、マウント7に固着されている。ロ
ードビーム2は、例えば64μm厚の弾性をもつステン
レスからなり、左右両側縁に沿ってフランジ8,8が形
成され、それによってフランジ8の形成範囲は撓みにく
くなっている。ロードビーム2は、マウント7に対する
取付部付近にフランジのない範囲があり、それによって
撓み易いばね部3を構成している。なお、マウント7
は、例えば0.3mm厚のステンレス製で、ロードビー
ム板2はマウント7で上下から挾持してねじ止め固定す
るか、またはかしめて固定するようになっている。
FIG. 1 is a plan view of a magnetic head according to an embodiment of the present invention, in which parts having the same names as those in FIG. 2 are designated by the same reference numerals. Reference numeral 2 denotes a load beam (head supporting spring plate), one end of which is attached with a gimbal 6 to which a magnetic head slider 4 is adhered, and the other end of which is fixed to a mount 7. The load beam 2 is made of, for example, stainless steel having a thickness of 64 μm, and flanges 8 are formed along the left and right edges of the load beam 2, so that the flange 8 cannot be easily bent. The load beam 2 has a flange-free area in the vicinity of a mounting portion for the mount 7, and thereby constitutes a spring portion 3 which is easily bent. In addition, mount 7
Is made of stainless steel having a thickness of 0.3 mm, for example, and the load beam plate 2 is clamped from above and below by a mount 7 and fixed by screwing or by caulking.

【0017】1は、例えばテフロン製の保護チューブで
外径が0.40〜0.46mmφ,内径が0.18〜
0.22mmφであり、その中を通るリード線5の太さ
は40〜45μm程度である。保護チューブ1は、ロー
ドビーム板2の左右両側の断面がU字溝状のフランジ8
の一方(本例では左側)に沿って(嵌合して)フランジ
部8に形成した爪片などにより固定して取付けられてい
る。なお、ヘッドスライダにはアップタイプとダウンタ
イプとあり、両タイプでリード線の出し方が左右逆にな
るので、それに応じて左右いずれかのフランジ保護チュ
ーブ1が取付けられる。
Reference numeral 1 denotes a Teflon protective tube having an outer diameter of 0.40 to 0.46 mmφ and an inner diameter of 0.18 to.
It is 0.22 mmφ, and the thickness of the lead wire 5 passing through it is about 40 to 45 μm. The protective tube 1 includes a flange 8 having a U-shaped groove on the left and right sides of the load beam plate 2 in cross section.
One side (in this example, the left side) is fixedly attached by a claw piece formed on the flange portion 8 (fitting). There are up-type and down-type head sliders, and the lead wires are left / right reversed in both types, and accordingly, either the left or right flange protection tube 1 is attached.

【0018】本実施例の特徴として、図に示すように、
保護チュ−ブ1をばね部3のところで切断し、内部のリ
ード線5をむき出しにしている。切断の幅は、チュ−ブ
の外径をD、切断幅をLとするとL≧Dが望ましいが、
いずれにしても使用時において切断個所前後の2つの保
護チュ−ブ1同志が接触しない範囲に設定すればよい。
このような構造をとることにより、保護チュ−ブの剛性
がヘッド支持ばねのばね荷重に影響をあたえることは無
くなり、荷重が8gr程度で、荷重のばらつきを±0.
25gr以下のように許容範囲内とすることができる。
As a feature of this embodiment, as shown in FIG.
The protective tube 1 is cut at the spring portion 3 to expose the lead wire 5 inside. The cutting width is preferably L ≧ D, where D is the outer diameter of the tube and L is the cutting width.
In any case, it may be set in a range where the two protective tubes 1 before and after the cutting position do not come into contact with each other during use.
With such a structure, the rigidity of the protective tube does not affect the spring load of the head support spring, and the load variation is ± 0.
It can be within the allowable range such as 25 gr or less.

【0019】[0019]

【発明の効果】以上詳しく述べたように、本発明によれ
ば、磁気ディスク用磁気ヘッドにおいて、信号授受用リ
ード線の保護チューブをヘッド支持ばねのばね部のとこ
ろで切断したので、保護チューブがヘッド支持ばねのば
ね荷重に与える影響をほとんどなくし、それによって、
ヘッド支持ばねのばね荷重の製造ばらつきを低減してヘ
ッド浮上量の製造ばらつきを低減し、高性能、高信頼性
の磁気ディスク装置を実現するのに適した磁気ヘッドが
得られる効果がある。
As described above in detail, according to the present invention, in the magnetic head for a magnetic disk, the protective tube of the signal transmitting / receiving lead wire is cut at the spring portion of the head supporting spring, so that the protective tube is the head. Has almost no effect on the spring load of the support spring, thereby
It is possible to obtain a magnetic head suitable for realizing a high-performance and high-reliability magnetic disk device by reducing the manufacturing variation of the spring load of the head support spring to reduce the manufacturing variation of the head flying height.

【0020】また、ヘッド支持ばねのばね荷重の径時変
化を低減し、ヘッド浮上量の径時変化を低減できるとい
う効果もある。
Further, there is also an effect that it is possible to reduce the change over time of the spring load of the head support spring and reduce the change over time of the head flying height.

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

【図1】本発明の磁気ヘッドの一実施例を示す平面図で
ある。
FIG. 1 is a plan view showing an embodiment of a magnetic head of the present invention.

【図2】従来の磁気ヘッドの一例を示す平面図である。FIG. 2 is a plan view showing an example of a conventional magnetic head.

【符号の説明】[Explanation of symbols]

1 保護チュ−ブ 2 ロ−ドビ−ム(支持ばね) 3 ばね部 4 磁気ヘッドスライダ 5 リ−ド線 6 ジンバル 7 マウント 8 フランジ 1 Protection Tube 2 Road Beam (Support Spring) 3 Spring Part 4 Magnetic Head Slider 5 Lead Wire 6 Gimbal 7 Mount 8 Flange

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 一端にヘッドスライダが取付けられ他端
がマウントに取付けられその間にばね部を有するヘッド
支持ばねと、前記ヘッド支持ばね上に配設され信号授受
用リード線を挿通する保護チューブとを備えた磁気ディ
スク装置用磁気ヘッドにおいて、前記保護チューブを前
記ばね部において切断した構成としたことを特徴とする
磁気ヘッド。
1. A head support spring having a head slider attached to one end and a mount attached to the other end and a spring portion therebetween, and a protective tube disposed on the head support spring and through which a lead wire for signal exchange is inserted. A magnetic head for a magnetic disk device, comprising: the protection tube cut at the spring portion.
JP33442592A 1992-12-15 1992-12-15 Magnetic head Pending JPH06180832A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP33442592A JPH06180832A (en) 1992-12-15 1992-12-15 Magnetic head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP33442592A JPH06180832A (en) 1992-12-15 1992-12-15 Magnetic head

Publications (1)

Publication Number Publication Date
JPH06180832A true JPH06180832A (en) 1994-06-28

Family

ID=18277237

Family Applications (1)

Application Number Title Priority Date Filing Date
JP33442592A Pending JPH06180832A (en) 1992-12-15 1992-12-15 Magnetic head

Country Status (1)

Country Link
JP (1) JPH06180832A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7346976B2 (en) * 1999-09-17 2008-03-25 Nhk Spring Co., Ltd. Method for manufacturing a suspension for disc drive

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7346976B2 (en) * 1999-09-17 2008-03-25 Nhk Spring Co., Ltd. Method for manufacturing a suspension for disc drive

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