JP2600419B2 - Floating head slider - Google Patents
Floating head sliderInfo
- Publication number
- JP2600419B2 JP2600419B2 JP5092090A JP5092090A JP2600419B2 JP 2600419 B2 JP2600419 B2 JP 2600419B2 JP 5092090 A JP5092090 A JP 5092090A JP 5092090 A JP5092090 A JP 5092090A JP 2600419 B2 JP2600419 B2 JP 2600419B2
- Authority
- JP
- Japan
- Prior art keywords
- head slider
- floating head
- heat
- magnetic disk
- resistant porous
- 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 - Fee Related
Links
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は磁気ディスク装置に用いられる浮動ヘッドス
ライダに関する。The present invention relates to a floating head slider used for a magnetic disk drive.
〔従来の技術〕 一般に磁気ディスク装置においては、コンタクト・ス
タート・ストップ（以下CSSと呼ぶ）を行う方式が用い
られている。この方式は磁気ディスク装置の起動・停止
時に磁気ディスクと浮動ヘッドスライダのレール面が接
触しており、吸着の問題や摺動による摩耗の問題は避け
られない。近年の磁気ディスク装置の高密度化，大容量
化に伴い浮動ヘッドスライダの浮揚量は、サブミクロン
のオーダからそれ以下になろうとしており、磁気ディス
ク面の平滑度に対する要求は益々厳しくなっている。[Prior Art] In general, a method of performing a contact start / stop (hereinafter referred to as CSS) is used in a magnetic disk drive. In this method, the magnetic disk and the rail surface of the floating head slider are in contact with each other when the magnetic disk device is started and stopped, and the problem of suction and the problem of wear due to sliding cannot be avoided. With the recent increase in the density and capacity of magnetic disk devices, the flying height of the floating head slider is about to be reduced from the order of submicron to less, and the demand for the smoothness of the magnetic disk surface is becoming increasingly severe. .
一方、磁気ディスク面には、浮動ヘッドスライダがCS
Sを行う特定の場所が設けられており、その部分は磁気
ディスクと浮動ヘッドスライダの吸着を避けるために他
の部分より平滑度が下げられている。このため、CSS時
の摺動による摩耗粉の発生は避けられず、ヘッドクラッ
シュの一因となっている。上記の問題を解決するため
に、第４図に示すような、浮動ヘッドスライダ40の背面
に圧電バイモルフ41を接着し、これに電圧を印加するこ
とによって浮動ヘッドスライダ40を湾曲させ、磁気ディ
スク面と浮動ヘッドスライダのレール面の接触面積を減
らし、吸着を避けることを特徴とする浮動ヘッドスライ
ダや、また、第５図に示すような、浮動ヘッドスライダ
50の背面に圧電振動子51を接着し、これに高周波電圧を
印加することにより浮動ヘッドスライダ50を高周波振動
させ、磁気ディスク面と浮動ヘッドスライダのレール面
との間に生ずるスクィーズ効果を利用して浮動ヘッドス
ライダ50を浮上させ、これらの摩耗を低減する浮動ヘッ
ドスライダ等が検討されている。On the other hand, the floating head slider is
A specific place for performing S is provided, and the portion has a lower smoothness than other portions in order to avoid the magnetic disk and the floating head slider from being attracted. For this reason, the generation of wear powder due to sliding during CSS is inevitable, which is a cause of head crash. In order to solve the above problem, a piezoelectric bimorph 41 is adhered to the back surface of the floating head slider 40 as shown in FIG. A floating head slider, characterized in that the contact area between the rail surface of the floating head slider and that of the floating head slider is reduced to avoid suction, and a floating head slider as shown in FIG.
A piezoelectric vibrator 51 is adhered to the back of 50, and a high frequency voltage is applied to the piezoelectric vibrator 51 to cause the floating head slider 50 to vibrate at a high frequency, utilizing the squeeze effect generated between the magnetic disk surface and the rail surface of the floating head slider. A floating head slider or the like that floats the floating head slider 50 to reduce the wear thereof has been studied.
上記の如く検討されている浮動ヘッドスライダにおい
て、浮動ヘッドスライダを湾曲させる方法は、吸着に対
しては大きな効果があるが、摺動による摩耗に対して
は、磁気ディスク面と浮動ヘッドスライダのレール面が
点接触又は線接触に近くなり、大きな圧力がかかるため
接触部のみが摩耗するといった問題点がある。一方、浮
動ヘッドスライダを高周波振動させ、スクィーズ効果を
利用して浮上させる方法は、摩耗に対しては、大きな効
果があるが、一旦、磁気ディスク面と浮動ヘッドスライ
ダとが吸着すると、スクィーズ効果が減少し、磁気ディ
スク面を高周波加振することになり、磁気ディスク面を
損傷する可能性がある。また、いずれの方法も、浮動ヘ
ッドスライダに急激、且つ、過大な応力を加えることに
なり耐久性の問題が生じる。In the floating head slider studied as described above, the method of bending the floating head slider has a great effect on attraction, but against the abrasion due to sliding, the magnetic disk surface and the rail of the floating head slider have a large effect. There is a problem that the surface becomes close to point contact or line contact and a large pressure is applied, so that only the contact portion is worn. On the other hand, the method of causing the floating head slider to oscillate at high frequency and fly using the squeeze effect has a great effect on abrasion, but once the magnetic disk surface and the floating head slider are attracted, the squeeze effect is reduced. As a result, the magnetic disk surface is vibrated at a high frequency, which may damage the magnetic disk surface. In addition, in either method, a sudden and excessive stress is applied to the floating head slider, which causes a problem of durability.
本発明の目的は上記の問題点を解決し、対摩耗性に優
れ、ヘッドクラッシュする可能性の少ない浮動ヘッドス
ライダを提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems, and to provide a floating head slider which is excellent in abrasion resistance and is less likely to cause head crash.
本発明は、空気流入端にテーパ面あるいは段差面が形
成され、磁気ディスク面に対して正圧を発生させる少な
くとも１つのレールを含む浮動ヘッドスライダにおい
て、少なくとも前記磁気ディスク面に接触する前記レー
ル面が耐熱多孔質部材より形成され、且つ、前記レール
の前記耐熱多孔質部材に接する部分あるいは前記耐熱多
孔質部材内に前記耐熱多孔質部材と略同等の熱膨張係数
を有する部材で形成された加熱素子より構成されてい
る。According to the present invention, in a floating head slider having a taper surface or a step surface formed at an air inflow end and at least one rail for generating a positive pressure on a magnetic disk surface, at least the rail surface contacting the magnetic disk surface Is formed of a heat-resistant porous member, and is formed of a member having a thermal expansion coefficient substantially equal to that of the heat-resistant porous member in a portion of the rail in contact with the heat-resistant porous member or in the heat-resistant porous member. It is composed of elements.
本発明の具体的な実施例について図面を用いて説明す
る。第１図は、本発明の一実施例を示す斜視図である。
第１図において、電磁変換素子７を有する浮動ヘッドス
ライダ１は、レール面２を含む部分が耐熱多孔質材３で
形成されており、耐熱多孔質材３と接する部分には、こ
の耐熱多孔質材３と熱膨張係数の略同等な部材で形成さ
れた加熱素子４と加熱線5,6とを有している。A specific embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing one embodiment of the present invention.
In FIG. 1, a floating head slider 1 having an electromagnetic transducer 7 has a portion including a rail surface 2 made of a heat-resistant porous material 3, and a portion in contact with the heat-resistant porous material 3 has a heat-resistant porous material 3. It has a heating element 4 and heating wires 5 and 6 formed of a member having substantially the same thermal expansion coefficient as the material 3.
続いて、浮動ヘッドスライダの動作について説明す
る。Next, the operation of the floating head slider will be described.
第２図は、本発明の一実施例を示す側面図である。 FIG. 2 is a side view showing one embodiment of the present invention.
第３図は浮動ヘッドスライダと磁気ディスクとを示す
部分拡大図である。第２図及び第３図において、磁気デ
ィスク装置の停止時に、浮動ヘッドスライダ１のレール
面２は、磁気ディスク10の表面上に接触している。この
状態で電流供給装置11より加熱線5,6を通じて加熱素子
４に電流を流して加熱素子４を加熱する。ここで発生し
た熱は、耐熱多孔質材３に伝わり、耐熱多孔質材３の内
部に存在する気体を加熱し、且つ、膨張させる。膨張し
た気体は、その大部分が浮動ヘッドスライダ１のレール
面２から外部に出ようとするため、結局、浮動ヘッドス
ライダ１は耐熱多孔質材３内部の気体により、磁気ディ
ズク10の表面から離れる方向に力を受ける。FIG. 3 is a partially enlarged view showing the floating head slider and the magnetic disk. 2 and 3, when the magnetic disk drive is stopped, the rail surface 2 of the floating head slider 1 is in contact with the surface of the magnetic disk 10. In this state, a current is supplied from the current supply device 11 to the heating element 4 through the heating wires 5 and 6 to heat the heating element 4. The heat generated here is transmitted to the heat-resistant porous material 3 to heat and expand the gas present inside the heat-resistant porous material 3. Most of the expanded gas tends to escape from the rail surface 2 of the floating head slider 1, so that the floating head slider 1 is separated from the surface of the magnetic disk 10 by the gas inside the heat-resistant porous material 3. Receives force in the direction.
なお、加熱素子４は、耐熱多孔質材３と熱膨張係数が
略同等のものを使用するので、繰り返し加熱による加熱
素子４と耐熱多孔質材３との接合が剥離する危険性は少
ない。また、耐熱多孔質材３の内部の気体は空気でもよ
く、加熱素子４の加熱を止めて耐熱多孔質材３が冷却さ
れれば、再び耐熱多孔質材３中に自然に充填されるの
で、浮動ヘッドスライダ１は繰り返しCSS動作を行うこ
とができる。Since the heating element 4 has a thermal expansion coefficient substantially equal to that of the heat-resistant porous material 3, there is little danger that the bonding between the heating element 4 and the heat-resistant porous material 3 due to repeated heating may be separated. Further, the gas inside the heat-resistant porous material 3 may be air, and if the heating of the heating element 4 is stopped and the heat-resistant porous material 3 is cooled, the heat-resistant porous material 3 is naturally filled again. The floating head slider 1 can repeatedly perform the CSS operation.
以上本発明の実施例について詳細に述べたが、本発明
において加熱素子の作成方法は、浮動ヘッドスライダの
レール面の平滑度が保たれれば、いかなる方法でもよ
く、加熱素子の材質及び加熱方法は、耐熱多孔質部材中
の気体を放出するのに十分な加熱が行わればよく、ま
た、耐熱多孔質部材中の気体を有効に浮動ヘッドスライ
ダのレール面から出すために、レール面以外または、レ
ール面の一部以外を気体を通さない材料で作成してもよ
く、これらの変形は本発明の主旨を逸脱しない範囲で行
ってもよく、以上の記述が本発明の範囲を限定するもの
ではない。Although the embodiments of the present invention have been described in detail above, any method may be used for producing a heating element in the present invention, as long as the rail surface of the floating head slider is kept smooth. It is sufficient that heating sufficient to release the gas in the heat-resistant porous member is performed, and in order to effectively release the gas in the heat-resistant porous member from the rail surface of the floating head slider, a portion other than the rail surface or A part of the rail surface may be made of a gas-impermeable material, and these modifications may be made without departing from the gist of the present invention, and the above description limits the scope of the present invention. is not.
以上説明したように、本発明によれば、ディスク装置
起動・停止時に浮動ヘッドスライダと磁気ディスク面の
間に生ずる摺動摩擦を大幅に低減し、吸着によるヘッド
クラッシュを防止する浮動ヘッドスライダが得られる。As described above, according to the present invention, it is possible to obtain a floating head slider that greatly reduces the sliding friction generated between the floating head slider and the magnetic disk surface when the disk device starts and stops, and prevents head crash due to suction. .
第１図は本発明の一実施例を示す斜視図、第２図は本発
明の一実施例を示す側面図、第３図は浮動ヘッドスライ
ダと磁気ディスクとを示す部分拡大図、第４図及び第５
図は従来検討されてきた浮動ヘッドスライダを示す側面
図である。 1,40,50……浮動ヘッドスライダ、２……レール面、３
……耐熱多孔質材、４……加熱素子、5,6……加熱線、
７……電磁変換素子、10……磁気ディスク、11……電流
供給装置、41……圧電バイモルフ、42,52……リード
線、51……圧電振動子。FIG. 1 is a perspective view showing one embodiment of the present invention, FIG. 2 is a side view showing one embodiment of the present invention, FIG. 3 is a partially enlarged view showing a floating head slider and a magnetic disk, and FIG. And the fifth
The figure is a side view showing a floating head slider which has been studied conventionally. 1,40,50 ... Floating head slider, 2 ... Rail surface, 3
... heat-resistant porous material, 4 ... heating element, 5, 6 ... heating wire,
7 ... electromagnetic transducer, 10 ... magnetic disk, 11 ... current supply device, 41 ... piezoelectric bimorph, 42,52 ... lead wire, 51 ... piezoelectric vibrator.
Claims (1)
成され、磁気ディスク面に対して正圧を発生させる少な
くとも１つのレールを含む浮動ヘッドスライダにおい
て、少なくとも前記磁気ディスク面に接触する前記レー
ル面が耐熱多孔質部材より形成され、且つ、前記レール
の前記耐熱多孔質部材に接する部分あるいは前記耐熱多
孔質部材内に前記耐熱多孔質部材と略同等の熱膨張係数
を有する部材で形成された加熱素子を備えたことを特徴
とする浮動ヘッドスライダ。1. A floating head slider having a tapered surface or a stepped surface formed at an air inflow end and having at least one rail for generating a positive pressure on a magnetic disk surface, wherein said rail contacts at least said magnetic disk surface. The surface is formed of a heat-resistant porous member, and a portion of the rail in contact with the heat-resistant porous member or in the heat-resistant porous member is formed of a member having a thermal expansion coefficient substantially equal to that of the heat-resistant porous member. A floating head slider comprising a heating element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5092090A JP2600419B2 (en) | 1990-03-02 | 1990-03-02 | Floating head slider |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5092090A JP2600419B2 (en) | 1990-03-02 | 1990-03-02 | Floating head slider |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03252975A JPH03252975A (en) | 1991-11-12 |
| JP2600419B2 true JP2600419B2 (en) | 1997-04-16 |
Family
ID=12872233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5092090A Expired - Fee Related JP2600419B2 (en) | 1990-03-02 | 1990-03-02 | Floating head slider |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2600419B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7542243B2 (en) * | 2005-02-18 | 2009-06-02 | Seagate Technology Llc | Slider with transducing and heating elements formed on trailing end thereof and sharing same thin film structure |
| US7760469B2 (en) * | 2006-06-23 | 2010-07-20 | Samsung Electronics Co., Ltd. | Method and apparatus for an air bearing surface to reduce contamination due to saturation water vapor pressure in a hard disk drive |
-
1990
- 1990-03-02 JP JP5092090A patent/JP2600419B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03252975A (en) | 1991-11-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090129 Year of fee payment: 12 |
|
| LAPS | Cancellation because of no payment of annual fees |