JPH03252975A - Floating head slider - Google Patents
Floating head sliderInfo
- Publication number
- JPH03252975A JPH03252975A JP5092090A JP5092090A JPH03252975A JP H03252975 A JPH03252975 A JP H03252975A JP 5092090 A JP5092090 A JP 5092090A JP 5092090 A JP5092090 A JP 5092090A JP H03252975 A JPH03252975 A JP H03252975A
- Authority
- JP
- Japan
- Prior art keywords
- porous member
- heat resisting
- resisting porous
- heat
- head slider
- 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.)
- Granted
Links
- 238000010438 heat treatment Methods 0.000 claims abstract description 20
- 238000001179 sorption measurement Methods 0.000 abstract description 3
- 230000000644 propagated effect Effects 0.000 abstract 1
- 239000011148 porous material Substances 0.000 description 12
- 230000000694 effects Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
Landscapes
- Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
Abstract
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。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a floating head slider used in a magnetic disk drive.
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Ｃ８Ｓ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磨耗の問題は避け
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。In general, magnetic disk drives use a contact start/stop (hereinafter referred to as C8S) method. In this system, the magnetic disk and the rail surface of the floating head slider come into contact with each other when the magnetic disk drive is started or stopped, and problems of adhesion and wear due to sliding are unavoidable. In recent years, as the density and capacity of magnetic disk devices have increased, the flying height of the floating head slider is on the order of submicrons or less, and the requirements for the smoothness of the magnetic disk surface are becoming increasingly strict. .
一方、磁気ディスク面には、浮動へ・ラドスライダがＣ
８Ｓを行う特定の場所が設けられており、その部分は磁
気ディスクと浮動へ・ラ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、Ｃ
８Ｓ時の摺動による磨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、これらの磨耗
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 RAD slider is C on the magnetic disk surface.
There is a specific area where 8S is performed, and the smoothness of that area is lower than other areas to avoid adhesion of the magnetic disk and the floating rad slider. For this reason, C
The generation of abrasion powder due to sliding during 8S is unavoidable and is a cause of head crashes. In order to solve the above problem, a floating head slider 40 as shown in FIG.
The floating head slider 40 is curved by bonding a piezoelectric bimorph 41 to the back surface of the magnetic disk and applying a voltage thereto, thereby reducing the contact area between the magnetic disk surface and the rail surface of the floating head slider to avoid adhesion. A piezoelectric vibrator 51 is bonded to the floating head slider or the back surface of the floating head slider 50 as shown in FIG. Floating head sliders and the like have been studied that utilize the squeeze effect that occurs between the surface and the rail surface of the floating head slider to levitate the floating head slider 50 and reduce wear on the slider.
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、摺動による磨耗に対しては、
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
部のみが磨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、磨耗に対しては、大きな効果が
あるが、−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 that has been studied as described above, the method of curving the floating head slider has a great effect on adsorption, but it has a large effect on the abrasion caused by sliding.
There is a problem in that the magnetic disk surface and the rail surface of the floating head slider come into close to point or line contact, and a large amount of pressure is applied, causing only the contact portion to wear out. On the other hand, the method of vibrating the floating head slider at high frequency and using the squeeze effect to levitate it has a great effect on wear, but once the magnetic disk surface and the floating head slider are attracted, the squeeze effect decreases, and the magnetic disk surface is subjected to high-frequency vibration, which may damage the magnetic disk surface. Furthermore, either method applies sudden and excessive stress to the floating head slider, resulting in durability problems.
本発明の目的は上記の問題点を解決し、対磨耗性に優れ
、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 problems and provide a floating head slider that has excellent wear resistance and is less likely to cause a 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
が耐熱多孔質部組より形成され、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路間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。The present invention provides a floating head slider that includes at least one rail having a tapered surface or a step surface formed at the air inflow end and generating positive pressure against the magnetic disk surface.
At least the rail surface that contacts the magnetic disk surface is formed of a heat-resistant porous member set, and a portion of the rail that contacts the heat-resistant porous member or within the heat-resistant porous member is provided between the heat-resistant porous member and the track. The heating element is made of a material having a coefficient of thermal expansion such as .
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と熱膨張係数の路間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。Specific embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing an embodiment of the present invention. In FIG. 1, a floating head slider 1 having an electromagnetic conversion element 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 is made of a heat-resistant porous material 3. It has a heating element 4 and heating wires 5 and 6 formed of a material 3 and a member having a thermal expansion coefficient.
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 explained.
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
ディスク１０の表面から離れる方向に力をうける。FIG. 3 is a partially enlarged view showing a floating head slider and a magnetic disk. In FIGS. 2 and 3, the rail surface 2 of the floating head slider 1 is in contact with the surface of the magnetic disk 10 when the magnetic disk device is stopped. In this state, current is passed through the heating element 4 from the current supply device 11 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, and the heat-resistant porous material 3
The gas present inside is heated and expanded. Since most of the expanded gas tries to exit from the rail surface 2 of the floating head slider 1, the floating head slider 1 is eventually separated from the surface of the magnetic disk 10 by the gas inside the heat-resistant porous material 3. Force is applied in the direction.
なお、加熱素子４は、耐熱多孔質材３と熱膨張係数が路
間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Ｃ８Ｓ動作を行うこと
ができる。Note that since the heating element 4 uses a material having a thermal expansion coefficient similar to that of the heat-resistant porous material 3, there is little risk that the bond between the heating element 4 and the heat-resistant porous material 3 will separate due to repeated heating. Further, the gas inside the heat-resistant porous material 3 may be air, and if the heating element 4 stops heating and the heat-resistant porous material 3 is cooled, it will naturally fill into the heat-resistant porous material 3 again.
The floating head slider 1 can perform C8S operations repeatedly.
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, the heating element in the present invention may be manufactured by any method as long as the smoothness of the rail surface of the floating head slider is maintained.
The material and heating method of the heating element should be such that sufficient heating is performed to release the gas in the heat-resistant porous member, and the gas in the heat-resistant porous member is effectively released from the rail surface of the floating head slider. Therefore, parts other than the rail surface or part of the rail surface may be made of a material that does not allow gas to pass through.These modifications may be made within the scope of the gist of the present invention, and the above description does not constitute the main purpose. It is not intended to limit the scope of the invention.
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 that occurs between the floating head slider and the magnetic disk surface when starting and stopping a disk device, and prevents head crashes due to adsorption. .
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・・・耐熱多孔質料、４・・・加熱素子、５
゜６・・・加熱線、７・・・電磁変換素子、１ｏ・・・
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 an embodiment of the invention, FIG. 2 is a side view showing an embodiment of the invention, FIG. 3 is a partially enlarged view showing a floating head slider and a magnetic disk, and FIG. 4 and fifth
The figure is a side view showing a floating head slider that has been studied in the past. 1.40.50...Floating head slider, 2...Rail surface, 3...Heat-resistant porous material, 4...Heating element, 5
゜6... Heating wire, 7... Electromagnetic conversion element, 1o...
Magnetic disk, 11... Current supply device, 41... Piezoelectric bimorph, 42.52... Lead wire, 51...
Piezoelectric vibrator.
Claims (1)
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。A floating head slider including at least one rail having a tapered surface or a stepped surface formed at an air inflow end and generating positive pressure against a magnetic disk surface, wherein at least the rail surface that contacts the magnetic disk surface is heat-resistant porous. a heating element formed of a member having a coefficient of thermal expansion 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 within the heat-resistant porous member. A floating head slider characterized by:
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 true JPH03252975A (en) | 1991-11-12 |
| JP2600419B2 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) |
Cited By (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
Cited By (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 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2600419B2 (en) | 1997-04-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (event 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 |