KR100422425B1 - Head having a structure for minimizing friction and stiction in hard disk drive - Google Patents

Head having a structure for minimizing friction and stiction in hard disk drive Download PDF

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Publication number
KR100422425B1
KR100422425B1 KR1019960054109A KR19960054109A KR100422425B1 KR 100422425 B1 KR100422425 B1 KR 100422425B1 KR 1019960054109 A KR1019960054109 A KR 1019960054109A KR 19960054109 A KR19960054109 A KR 19960054109A KR 100422425 B1 KR100422425 B1 KR 100422425B1
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head
recording medium
stiction
hard disk
disk drive
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KR19980035693A (en
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윤우영
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삼성전자주식회사
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    • 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
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/1272—Assembling or shaping of elements
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2508—Magnetic discs
    • G11B2220/2516—Hard disks
    • 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
    • G11B5/58—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 for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B5/596—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 for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on disks

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
  • Supporting Of Heads In Record-Carrier Devices (AREA)

Abstract

PURPOSE: A head having a structure for minimizing friction and stiction in an HDD(Hard Disk Drive) is provided to texture a specific part only of the head, and to incline a transduce part of a gap area as inclining up to the end of a leading edge of the head, thereby minimizing noise of a recording medium and realizing reliability on a drive. CONSTITUTION: A texture area of a head becomes an extremely restricted part of a trailing edge. In case of other part of the head, the head is inclined at 15 degrees up to the end of a leading edge, so that the head cannot be contacted with a recording medium even though the head stops. If the head stops in a parking zone or jumps, a transducer(8) of a gap area formed in the head is inclined to protect the head from friction and stiction. An inclined angle of the transducer(8) is about 10 degrees.

Description

하드 디스크 드라이브에서 마찰 및 흡착 최소화를 위한 구조를 가지는 헤드A head having a structure for minimizing friction and adsorption in a hard disk drive

본 발명은 자기헤드에 관한 것으로, 특히 하드 디스크 드라이브에서 기록매체의 노이즈 최소화 및 신뢰성 확보를 위한 구조를 가진 헤드에 관한 것이다.The present invention relates to a magnetic head, and more particularly, to a head having a structure for minimizing noise and ensuring reliability of a recording medium in a hard disk drive.

하드 디스크 드라이브에서 자기헤드(이하 "헤드" 라 약칭함)는 파워-오프시에 디스크이 파킹존에서 헤드와 디스크가 접촉하는 상태로 있게 된다. 그러다가 파워-온시에 디스크가 회전하는 시점에서 헤드에 작용하는 서스팬션(suspension)에 의한 누르는 힘과 헤드와 기록매체 사이에 접착시 존재했던 마찰력의 상호 역학적인 관계로 인해 헤드와 디스크간에는 흡착력(stiction force)과 마찰력(friction force)이 발생하게 된다. 상기 흡착력(stiction force)과 마찰력(friction force)은 드라이브의 신뢰성을 결정하는데 중요한 요소이다. 하드 디스크 드라이브에서는최악의 경우 파워-온시에 발생된 마찰력에 의해 스핀들모터가 회전하지 않아 시스템이 부팅(booting)이 되지 않는다거나 헤드가 디스크에 붙어있다가 떨어지면서 심한 잡음이 난다거나 또는 시스템의 동작이 멈추는 등의 치명적인 결과가 초래된다.In a hard disk drive, a magnetic head (hereinafter abbreviated as "head") is in a state in which the head and the disk are in contact with each other in the disk parking zone at the time of power-off. Then, due to the interaction between the pressing force by the suspension acting on the head at the time of turning the disk at the time of power-on and the frictional force which existed when the head and the recording medium were adhered, the stiction force ) And a friction force are generated. The stiction force and the friction force are important factors for determining the reliability of the drive. In the worst case, the hard disk drive may not be able to boot because the spindle motor does not rotate due to the frictional force generated during power-on, or the head is stuck on the disk, Resulting in lethal consequences such as stopping.

헤드와 기록매체 간에서 흡착력 및 마찰력이 발생하는 주요 원인은 하기와 같은 것이 있다. ① 기록매체 표면에 윤활유나 카폰(carbon)층의 두께나 재질 도는 그 표면 형상의 가공정도에 의하여, ② 헤드의 경우 디스크면과 접촉되는 표면의 형상 및 재질과 서스팬션의 스프링에 의해 눌려지는 힘에 의하여, ③ 하드 디스크 드라이브 내부에 있는 오염물질에 의하여, 등이 있다.The main causes of attraction force and friction force between the head and the recording medium are as follows. (1) the thickness and material of the lubricating oil or carbon layer on the surface of the recording medium, (2) the degree of processing of the surface shape, (2) the shape and material of the surface of the head that is in contact with the disk surface, ③ due to pollutants inside the hard disk drive.

따라서 하드 디스크 드라이브에 사용되는 헤드의 표면은 가능한한 거침(roughness)이 적은 것을 추구해 왔고, 기록매체의 텍스쳐(texture)의 기술의 발전에 따라 자기헤드와 기록매체인 디스크간에 발생하는 흡착력(stiction force) 및 마찰력은 개선될 수 있었다.Therefore, the surface of the head used in the hard disk drive has been pursued as little roughness as possible. As the texture of the recording medium is developed, the stiction force between the magnetic head and the disk, which is the recording medium, ) And frictional force could be improved.

비록 다이나믹 로딩(dynamic loading)과 같은 기술에서는 다른 형태이지만 현재의 헤드/기록매체가 기록매체의 파킹존(parking zone)에 헤드가 파킹되는 형태의 설계로서는, 그리고 자기헤드와 기록매체간의 인터페이스 간격이 좁아지면 좁아질수록 기록매체의 텍스쳐(texture)기술은 더욱 정교하여지며 복잡한 기술로 요구되고 있다.Although it is different in the technology such as dynamic loading, in the design of the present head / recording medium in which the head is parked in the parking zone of the recording medium, and the interface interval between the magnetic head and the recording medium is As the width of the recording medium becomes narrower, the texture of the recording medium becomes more sophisticated and complicated.

따라서 본 발명의 목적은 헤드 텍스쳐에 의한 기록매체의 노이즈 최소화 및 신뢰성을 확보하는 헤드를 제공하는데 있다.SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a head for minimizing noise and reliability of a recording medium by head texture.

본 발명의 다른 목적은 헤드와 기록매체 간의 마찰 및 흡착 최소화를 위한 구조의 헤드를 제공하는데 있다.It is another object of the present invention to provide a head having a structure for minimizing friction and adsorption between a head and a recording medium.

도 1은 통상적인 헤드의 사시도로서 윈채스터 헤드(winchester head)의 구조를 보여주고 있다.1 is a perspective view of a conventional head showing the structure of a winchester head.

도 2는 본 발명의 실시예에 따른 헤드의 구조를 설명하기 위한 도면이다.2 is a view for explaining a structure of a head according to an embodiment of the present invention.

이하 본 발명의 바람직한 실시예들을 첨부한 도면을 참조하여 상세히 설명한다. 본 발명의 요지를 불필요하게 흐릴 수 있는 공지 기능 및 구성에 대한 상세한 설명은 생략한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Detailed descriptions of well-known functions and constructions that may unnecessarily obscure the gist of the present invention will be omitted.

도 1은 통상적인 헤드의 사시도로서 윈채스터 헤드(winchester head)의 구조를 보여주고 있다. 헤드는 크게 슬라이더 부분과 C코아부분으로 나누어지며, 도 1에서, 참조번호 2는 트래일링 에지(trailing edge) 부분이고, 4는 리딩(leading edge)부분이다. 그리고 6은 ABS(Air Bearing Surface)이다. ABS 6가 있는 이유는 다음과 같다. 헤드와 기록매체를 접촉시켜 사용하게 되면 각각의 구성재료의 경도 차이로 인하여 헤드에 접촉저항으로 인한 저항열 및 마모가 발생하게 되어, 헤드의 수명이 단축되고 고밀도 기록이 불가능하므로 공기압을 이용하여 헤드를 디스크 표면 위로 부상하게 하는 기능을 한다.1 is a perspective view of a conventional head showing the structure of a winchester head. The head is largely divided into a slider portion and a C-core portion. In Fig. 1, reference numeral 2 is a trailing edge portion and 4 is a leading edge portion. And 6 is ABS (Air Bearing Surface). The reasons for ABS 6 are as follows. When the head and the recording medium are used in contact with each other, resistance heat and abrasion due to contact resistance are generated due to the difference in hardness of the respective constituent materials. As a result, the life of the head is shortened and high density recording is not possible. To the disk surface.

기존에는 헤드의 텍스쳐 기술에서는 텍스쳐의 영역이 너무 넓으므로 인해 흡착력을 줄이는데는 한계가 있다. 따라서 본 발명에서는 도 2의 (a)와 (b)에서 보여 주는 바와 같이, 헤드의 텍스쳐의 영역을 한정할 뿐만아니라 헤드 갭영역의 트랜스듀서(transduce) 8을 경사지게 하고 헤드의 리딩에지 끝까지 경사를 준다.Conventionally, in the texture technology of the head, since the area of the texture is too wide, there is a limit in reducing the attraction force. Accordingly, in the present invention, as shown in FIGS. 2A and 2B, not only the area of the texture of the head is limited, but also the inclination of the transducer 8 of the head gap region and the inclination to the leading edge of the head give.

도 2는 본 발명의 실시예에 따른 헤드의 구조를 설명하는 도면이다. 먼저 도 2의 (a)를 참조하면, 헤드의 트래일링 에지 2의 사이드중 극히 한정된 부분만 기록매체의 파킹존에 닿도록 하고 헤드가 파킹존에 정지시에나 상기 파킹존에서 도약(take-off)시 갭영역의 트랜스듀셔(transduce) 8을 경사지게 하여서 보호되도록 한다. 이때의 경사각은 약 10°정도가 바람직하다. 이렇게 되면 상기 갭의 트랜스듀셔 8은 정상으로 비행(flying)시에 고정위치고도(pitch height)에 따라 갭의 트랜스듀셔 8과 기록 매체가 가장 가까운 자세로 되게 하므로 최고의 성능을 갖을 수 있다.2 is a view for explaining a structure of a head according to an embodiment of the present invention. 2 (a), only a very limited portion of the side of the trailing edge 2 of the head is brought into contact with the parking zone of the recording medium, and when the head is stopped in the parking zone or taken-off in the parking zone, The transducer 8 of the time gap region is inclined to be protected. The inclination angle at this time is preferably about 10 degrees. In this case, the transducer 8 of the gap can have the best performance since the transducer 8 of the gap and the recording medium are positioned closest to each other according to the fixed position height (height) when flying normally.

또한 본 발명의 실시예에서는 헤드의 텍스쳐 영역을 도 2의 (a) 및 (b)에서 보여주는 바와 같이 트래일링 에지 2의 극히 한정된 부분만 되도록 하고 다른 부분은 리딩에지 4 끝까지 헤드 자체에 경사를 15°정도 주어서 헤드가 정지시에도 기록매체와 최대한 닿지 않도록 한다. 상기 15°정도의 리딩영역의 경사로 인하여 헤드의 도약을 빠르게 하므로 하여 헤드와 기록매체 간에 발생할 수 있는 흡착(stiction) 및 마찰(friction)의 기회를 최소화하게 된다. 도 2와 같이 본 발명의 헤드 구조가 변경됨에 따라 헤드의 본딩위치(bonding location)를 이에 맞게 최적화하여야 한다. 도 2의 (a)를 참조하면 기존의 본딩위치 10에서 오른쪽으로 더 이동한 12의 위치가 본 발명의 실시예에 따른 본딩위치이다. 헤드의 본딩위치의 선정은 실험에 의해 이루어지며 트래일링 에지의 텍스쳐드 영역에 힘이 덜 가해지는 위치가 최적화된 본딩위치가 된다.Also, in the embodiment of the present invention, the texture area of the head is limited to only a very limited part of the trailing edge 2 as shown in Figs. 2 (a) and 2 (b) ° so that the head does not touch the recording medium as much as possible even when the head is stopped. The inclination of the leading area of about 15 ° makes the head jump faster, thereby minimizing the chance of stiction and friction between the head and the recording medium. As the head structure of the present invention is changed as shown in FIG. 2, the bonding location of the head must be optimized accordingly. Referring to FIG. 2 (a), the position of 12 moved further to the right from the existing bonding position 10 is the bonding position according to the embodiment of the present invention. The choice of the bonding position of the head is made by experimentation and the position where the force is less applied to the textured area of the trailing edge becomes the optimized bonding position.

상술한 본 발명의 설명에서는 구체적인 실시예에 관해 설명하였으나, 여러가지 변형이 본 발명의 범위에서 벗어나지 않고 실시할 수 있다. 따라서 본 발명의 범위는 설명된 실시예에 의하여 정할 것이 아니고 특허청구의 범위와 특허청구의범위의 균등한 것에 의해 정해 져야 한다.While the present invention has been described in connection with certain exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. Accordingly, the scope of the present invention should not be limited by the embodiments described, but should be determined by the scope of patent claims and the scope of patent offices.

상술한 바와 같이 본 발명은 헤드의 특정부분만 텍스쳐하고 갭영역의 트랜스듀셔(transduce) 부분 및 헤드의 리딩에지 4 끝까지 경사를 주므로 기록매체의 노이즈를 최소화하고 드라이브의 신뢰성을 확보해 주는 장점이 있다.As described above, the present invention has an advantage of minimizing the noise of the recording medium and securing the reliability of the drive by texturing only a specific portion of the head, and by providing a transducer portion of the gap region and a tip of the leading edge 4 of the head .

Claims (4)

하드 디스크 드라이브의 헤드에 있어서,In the head of the hard disk drive, 상기 헤드의 텍스쳐 영역을 트래일링 에지 2의 극히 한정된 부분만 되도록 하고 헤드의 다른 부분은 리딩에지 4 끝까지 헤드 자체에 경사를 15°정도 주어서 상기 헤드가 정지시에도 기록매체와 최대한 닿지 않도록 함을 특징으로 하여 마찰 및 흡착 최소화를 위한 구조를 가지는 헤드.The textured area of the head is made only a very limited part of the trailing edge 2 and the other part of the head is inclined 15 degrees to the end of the leading edge 4 so that the head does not touch the recording medium as much as possible even when the head is stopped The head having a structure for minimizing friction and adsorption. 제1항에 있어서, 헤드가 파킹존에 정지시나 도약시에 기록매체와의 마찰 및 흡착으로부터의 보호를 위해 헤드 자체에 형성되는 갭영역의 트랜스듀셔 8을 경사지게 함을 특징으로 하여 마찰 및 흡착 최소화를 위한 구조를 가지는 헤드.2. The recording head according to claim 1, characterized in that the head slopes the transducer (8) of the gap region formed in the head itself for protection against friction and adsorption with the recording medium at the time of stopping or leaping in the parking zone, The head having a structure for the head. 제2항에 있어서, 상기 헤드 갭영역의 트랜스듀셔 8의 경사각은 바람직하게 약 10°정도임을 특징으로 하여 마찰 및 흡착 최소화를 위한 구조를 가지는 헤드.The head as claimed in claim 2, wherein the inclined angle of the transducer (8) in the head gap region is preferably about 10 degrees, thereby minimizing friction and adsorption. 제3항에 있어서, 상기 헤드가 서스팬션과 본딩되는 최적화 위치는 트래일링 에지의 텍스쳐드 영역에 힘이 최소로 가해지는 위치임을 특징으로 하여 마찰 및 흡착 최소화를 위한 구조를 가지는 헤드.The head according to claim 3, wherein the optimized position at which the head is bonded to the suspension is a position at which a force is minimally applied to the textured area of the trailing edge, thereby minimizing friction and adsorption.
KR1019960054109A 1996-11-14 1996-11-14 Head having a structure for minimizing friction and stiction in hard disk drive Expired - Fee Related KR100422425B1 (en)

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KR1019960054109A KR100422425B1 (en) 1996-11-14 1996-11-14 Head having a structure for minimizing friction and stiction in hard disk drive

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KR19980035693A KR19980035693A (en) 1998-08-05
KR100422425B1 true KR100422425B1 (en) 2004-06-04

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61258327A (en) * 1985-05-13 1986-11-15 Seiko Epson Corp floating magnetic head
JPS6224489A (en) * 1985-07-25 1987-02-02 Fujitsu Ltd Magnetic head slider
KR900003816A (en) * 1988-08-11 1990-03-27 가다오까 마사다까 Floating magnetic head
US5253232A (en) * 1988-02-08 1993-10-12 Hitachi, Ltd. Magneto-optical recording apparatus having a magnetic slider with increased rail width
JPH0729139A (en) * 1993-07-15 1995-01-31 Alps Electric Co Ltd Floating-type magnetic head

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61258327A (en) * 1985-05-13 1986-11-15 Seiko Epson Corp floating magnetic head
JPS6224489A (en) * 1985-07-25 1987-02-02 Fujitsu Ltd Magnetic head slider
US5253232A (en) * 1988-02-08 1993-10-12 Hitachi, Ltd. Magneto-optical recording apparatus having a magnetic slider with increased rail width
KR900003816A (en) * 1988-08-11 1990-03-27 가다오까 마사다까 Floating magnetic head
JPH0729139A (en) * 1993-07-15 1995-01-31 Alps Electric Co Ltd Floating-type magnetic head

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