KR100417232B1 - Device for preventing contact with disk by changing form of head gimbal assembly - Google Patents

Device for preventing contact with disk by changing form of head gimbal assembly Download PDF

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Publication number
KR100417232B1
KR100417232B1 KR1019960023325A KR19960023325A KR100417232B1 KR 100417232 B1 KR100417232 B1 KR 100417232B1 KR 1019960023325 A KR1019960023325 A KR 1019960023325A KR 19960023325 A KR19960023325 A KR 19960023325A KR 100417232 B1 KR100417232 B1 KR 100417232B1
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South Korea
Prior art keywords
disk
head
slider
damper
gimbal assembly
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KR1019960023325A
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Korean (ko)
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KR980004659A (en
Inventor
김진석
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삼성전자주식회사
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Priority to KR1019960023325A priority Critical patent/KR100417232B1/en
Publication of KR980004659A publication Critical patent/KR980004659A/en
Application granted granted Critical
Publication of KR100417232B1 publication Critical patent/KR100417232B1/en

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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
    • G11B5/48—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
    • G11B5/60—Fluid-dynamic spacing of heads from record-carriers
    • G11B5/6005—Specially adapted for spacing from a rotating disc using a fluid cushion

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  • Supporting Of Heads In Record-Carrier Devices (AREA)

Abstract

PURPOSE: A device for preventing a contact with a disk by changing a form of a head gimbal assembly is provided to form a semicircular groove at a position adjacent to a lower part of a suspension connected with a slider, and to configure a damper to be more protruded than the slider, thereby preventing a head dimple and a disk scratch. CONSTITUTION: A semicircular groove(30) is formed in a lower part of a suspension(20) connected with a slider(22). A damper(32) which is more protruded than the slider(22) is inserted into the groove(30). The damper(32) is made of a liquidity solid. A head mounted on the slider(22) cannot be contacted with a disk by the damper(32) when power is turned off. When the power is turned on, the head rises in predetermined rising height.

Description

헤드짐벌어셈블리의 형성변경을 통한 디스크와의 접촉방지장치Device for preventing contact with the disk by changing the formation of the head gimbal assembly

본 발명은 하드 디스크 드라이브(Hard Disk Drive: 이하 HDD라 칭함)에 관한 것으로, 특히 헤드짐벌어셈블리(Head Gimbal Assembly: HGA)의 형성변경을 통해 디스크와의 접촉을 방지하는 장치에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hard disk drive (hereinafter referred to as an HDD), and more particularly, to an apparatus for preventing contact with a disk by changing the formation of a head gimbal assembly (HGA).

컴퓨터의 보조기억장치로 사용되는 HDD는 내부의 스핀들모터에 의해 고속회전하는 디스크와 이 디스크의 트랙에 데이타를 기록하거나 또는 기록된 데이타를 독출하기 위한 자기헤드를 포함하는 엑츄에이터를 구비하고 있다. 상기 엑츄에이터는 베이스에 고정된 피봇축을 중심으로 회전 가능케 되어 있으며, 보이스코일모터(voice coil motor)의 작동에 따라 엑츄에이터의 후단측에 있는 보이스코일모터의 코일부가 이동하게 된다. 그에 따라 엑츄에이터의 선단축에 있는 헤드짐벌은 디스크면 위를 비행하게 된다. 이때 헤드짐벌에 장착되어 자기 헤드는 디스크상에 기록된 데이타를 읽거나 또는 데이타를 기록한다.An HDD used as an auxiliary storage device of a computer is provided with a disk rotating at a high speed by an internal spindle motor and an actuator including a magnetic head for recording data on a track of the disk or reading recorded data. The actuator is rotatable around a pivot shaft fixed to the base, and the coil portion of the voice coil motor at the rear end side of the actuator moves according to the operation of the voice coil motor. As a result, the head gimbals on the short axis of the actuator will fly over the disk surface. At this time, the magnetic head is mounted on the head gimbal to read data recorded on the disk or to record data.

동작중이었던 HDD가 파워오프가 되면 엑츄에이터는 통상 디스크상의 최내주에 형성된 파킹존(parking zone)으로 이동하게 된다. 파킹존으로의 이동은 스프링힘에 의해 자동적으로 일어난다. 파킹존으로 이동하면 헤드는 디스크면상에 착지된다. 이러한 상태에서 습기인가등 외부적인 환경 스트레스(stress)가 가해지면 헤드나 디스크등이 가장 치명적인 악영향을 받게 된다. 즉 외부의 습기가 HDD 내부로 스며들면 헤드와 디스크에 흡착(striction) 등이 발생하고, 그에 의해 헤드딤플(head dimple), 디스크 긁힘(disk scratch)등과 치명적인 불량이 유발된다.When the HDD that has been in operation is powered off, the actuator normally moves to a parking zone formed at the innermost periphery on the disk. The movement to the parking zone occurs automatically by the spring force. When moving to the parking zone, the head lands on the disk surface. If external environmental stress such as moisture or the like is applied in such a state, the head or the disk is most adversely affected. That is, when external moisture penetrates into the HDD, striction occurs on the head and the disk, thereby causing a fatal defect such as a head dimple, a disk scratch, and the like.

따라서 본 발명의 목적은 헤드와 디스크의 접촉으로 인해 헤드딤플(head dimple), 디스크 긁힘(disk scratch)등과 같은 치명적인 불량 유발을 해소하기 위한 장치를 제공하는데 있다.SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide an apparatus for eliminating a deadly defect such as a head dimple, a disk scratch or the like due to a contact between a head and a disk.

본 발명의 다른 목적은 헤드짐벌어셈블리의 형성변경을 통한 디스크와의 접촉방지장치를 제공하는데 있다.Another object of the present invention is to provide an apparatus for preventing contact with a disk by changing the formation of a head gimbals assembly.

상기한 목적에 따라, 본 발명은, 디스크와의 접촉방지장치에 있어서,According to an aspect of the present invention, there is provided an apparatus for preventing contact with a disk,

헤드짐벌어셈블리중에서 슬라이더와 연결되는 서스팬션의 하부 이웃한 위치에 반원의 홈을 파고, 상기 홈에 상기 슬라이더의 높이만큼 삽입하며, 상기 슬라이더 보다 돌출되게 형성한 댐퍼를 구성함을 특징으로 한다.A damper is formed by digging a groove of a semicircle at a position adjacent to a lower portion of a suspension connected to the slider in the head gimbal assembly and inserting the groove into the groove by the height of the slider and protruding from the slider.

이하 첨부된 도면을 참조하여 본 발명의 바람직한 실시예를 상세히 설명한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

제1도는 통상적인 HDD의 엑츄에이터장치를 보여주고 있다. 엑츄에이터 장치는 크게 헤드짐벌 어셈블리 10과 피봇 12와 보이스코일모터의 코일부 14 및, 아암 16으로 구분할 수 있다. 아암 16에는 앞뒤에 각각 헤드짐벌어셈블리 10과 보일스코일모터의 코일부 14가 조립되어 있고, 피봇 12에 설치된 피봇베어링에 의하여 베이스의 피봇축에 결합되어 있다. 아암 16을 측면에서 보면 E자 모양을 하고 있어 상기 아암 16은 E-블럭이라 불리워지기도 한다.FIG. 1 shows an actuator device of a conventional HDD. The actuator device can roughly be divided into a head gimbals assembly 10, a pivot 12, a coil part 14 of a voice coil motor, and an arm 16. The arm 16 has front and rear head gimbal assemblies 10 and a coil part 14 of a ball-and-socket motor respectively assembled and coupled to the pivot shaft of the base by a pivot bearing mounted on the pivot 12. The arm 16 has an E-shape when viewed from the side, and the arm 16 is also called an E-block.

상기 아암 16의 앞에 결합된 헤드짐벌 어셈블리 10의 끝단에는 슬라이더에 결합된 자기헤드가 있다. 또한 헤드짐벌 어셈블리 10에는 상기 슬라이더를 결합하고 타측이 아암에 연결된 서스팬션("헤드짐벌"이라고도 함)이 있다. 상기 슬라이더에는 ABS(slider Air Bearing Surface)가 갖추어져 있다. 그러므로 상기 서스팬션 어셈블리와 슬라이더 ABS의 유체역학적 균형을 이용하면 자기헤드를 최소의 부상높이 및 높이제어를 할 수 있다.At the end of the head gimbal assembly 10 coupled to the front of the arm 16, there is a magnetic head coupled to the slider. The head gimbal assembly 10 also has a suspension (also referred to as a "head gimbals") that connects the slider with the other end connected to the arm. The slider is equipped with an ABS (Slider Air Bearing Surface). Therefore, by using the hydrodynamic balance between the suspension assembly and the slider ABS, the magnetic head can be controlled to the minimum floating height and height.

제2도는 본 발명의 실시예에 따라 헤드짐벌어셈블리 10의 형성변경을 통한디스크와의 접촉방지장치를 장착하는 부분을 보여주기 위한 도면이다. 제2도를 참조하면, 헤드짐벌어셈블리 10의 선단에는 슬라이더 22가 있고, 상기 슬라이더 22와 연결된 서스팬션 20이 있다. 그리고 참조번호 24는 헤드짐벌어셈블리 10을 제1도에 도시된 아암 16과 결합하기 위한 스웨지 홀(swage hole)이다.FIG. 2 is a view showing a portion for mounting a device for preventing contact with a disk through modification of the head gimbal assembly 10 according to an embodiment of the present invention. Referring to FIG. 2, a head gimbal assembly 10 has a slider 22 at the tip thereof, and a suspension 20 connected to the slider 22. And reference numeral 24 is a swage hole for coupling the head gimbal assembly 10 with the arm 16 shown in FIG.

제2도에서, 본 발명의 실시예에 따른 디스크와의 접촉방지장치는 슬라이더와 연결되는 부분의 서스팬션 20의 하부에 설치되어 있다. 상기 접촉 방지장치는 제2도에서 참조번호 32로 나타낸 댐퍼(damper)를 포함한다. 상기 접촉방지장치는 헤드와 디스크의 접촉으로 인해 헤드딤플(head dimple), 디스크 긁힘(disk scratch)등과 같은 치명적인 불량 유발을 해소한다.2, the apparatus for preventing contact with a disk according to the embodiment of the present invention is installed at a lower portion of a suspension 20 connected to a slider. Said contact preventer comprises a damper denoted by reference numeral 32 in FIG. The contact prevention device eliminates fatal defects such as head dimple, disk scratch, etc. due to contact between the head and the disk.

제3도는 본 발명의 실시예에 따른 접촉방지장치를 더욱 상세히 보여주기 위한 도면이다. 제3도를 참조하면, 상기 접촉방지장치는 헤드짐벌어셈블리의 약간의 형상변경을 통해 구현됨을 알수 있다. 구체적으로 설명하면, 슬라이더 22와 연결되는 부분의 서스팬션 20의 하부에는 반원형태의 홈 30이 파져 있다. 상기 홈 30에는 상기 슬라이더 22 보다 돌출되게 형성한 댐퍼 32가 삽입되어 있다. 상기 댐퍼 32는 유동성고체로 만들어진다.FIG. 3 is a view for showing the contact preventive device according to the embodiment of the present invention in more detail. Referring to FIG. 3, it can be seen that the contact prevention device is implemented by slightly changing the shape of the head gimbals assembly. Specifically, a semicircular groove 30 is formed in a lower portion of the suspension 20 at a portion connected to the slider 22. A damper 32 protruding from the slider 22 is inserted into the groove 30. The damper 32 is made of a fluid solid.

이렇게 함으로써 슬라이더 22에 장착된 헤드는 파워오프시 댐퍼 32에 의해서 디스크와의 접촉이 방지된다. 그리고 파워온시에는 헤드가 일정한 부상높이로 부상하게 된다. 이렇게 헤드가 디스크와 접촉되지 않게 되면 온도 습도 등의 외부환경에 의해 생길수 있는 헤드딤블(head dimple)이나 디스크 긁힘(disk scratch)이 발생하지 않게 된다.By doing so, the head mounted on the slider 22 is prevented from coming into contact with the disk by the damper 32 at the time of power-off. At power-on, the head is raised at a constant height. When the head is not in contact with the disk, the head dimple or disk scratch that may be caused by external environment such as temperature and humidity is not generated.

상술한 바와 같이 본 발명은 전기한 디스크와의 접촉방지장치를 사용함으로써 헤드와 디스크의 접촉으로 인해 생길 수 있는 헤드딤플(head dimple), 디스크 긁힘(disk scratch)등과 같은 치명적인 불량 유발을 해소하는 잇점이 있다.As described above, according to the present invention, it is possible to prevent the occurrence of a deadly defect such as a head dimple, a disk scratch or the like which may be caused by a contact between a head and a disk by using an apparatus for preventing contact with an electric disk .

제1도는 통상적인 HDD(Hard Disk Drive)의 엑츄에이터장치를 보여주기 위한 도면1 is a view for showing an actuator device of a typical HDD (Hard Disk Drive)

2도는 본 발명의 실시예에 따라 헤드짐벌어셈블리 10의 형성변경을 통한 디스크와의 접촉방지장치를 장착하는 부분을 보여주기 위한 도면2 is a view for showing a portion for mounting a device for preventing contact with a disk through modification of the formation of the head gimbal assembly 10 according to an embodiment of the present invention

제3도는 본 발명의 실시예에 따른 접촉방지장치를 더욱 상세히 보여주기 위한 도면3 is a view for showing the contact preventive device according to the embodiment of the present invention in more detail;

도면의 주요부분에 대한 부호의 설명DESCRIPTION OF THE REFERENCE NUMERALS

10: 헤드짐벌어셈블리(head gimbal assembly)10: Head gimbal assembly

20: 서스팬션 22: 슬라이더20: Suspension 22: Slider

30: 홈 32: 댐퍼(damper)30: groove 32: damper

Claims (3)

디스크와의 접촉방지장치에 잇어서,In the apparatus for preventing contact with a disk, 헤드짐벌어셈블리중에서 슬라이더와 연결되는 서스팬션의 하부 이웃한 위치에 반원의 홈을 파고, 상기 홈에 상기 슬라이더의 높이만큼 삽입하며, 상기 슬라이더 보다 돌출되게 형성한 댐퍼를 구성함 특징으로 하는 접촉방지장치.Wherein the damper is formed by digging a groove of a semicircle at a position adjacent to a lower portion of a suspension connected to a slider in the head gimbal assembly, inserting the groove into the groove by a height of the slider, and protruding from the slider. 제1항에 있어서, 상기 댐퍼는 유동성고체임을 특징으로 하는 접촉방지장치.The contact prevention apparatus according to claim 1, wherein the damper is a fluid solid. 제2항에 있어서, 상기 슬라이더에 장착된 헤드는 파워오프시 상기 댐퍼에 의해서 디스크와의 접촉이 방지됨을 특징으로 하는 접촉방지장치.3. The apparatus according to claim 2, wherein the head mounted on the slider is prevented from contacting the disk by the damper when the head is powered off.
KR1019960023325A 1996-06-24 1996-06-24 Device for preventing contact with disk by changing form of head gimbal assembly KR100417232B1 (en)

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KR100417232B1 true KR100417232B1 (en) 2004-04-17

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Publication number Priority date Publication date Assignee Title
US6351350B1 (en) 1999-12-09 2002-02-26 Hutchinson Technology Incorporated Shock limiter system for a head suspension
US6504684B1 (en) 1999-12-27 2003-01-07 Hutchinson Technology Incorporated Head suspension with integral shock limiter

Citations (6)

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JPS56105358A (en) * 1980-01-22 1981-08-21 Mitsubishi Electric Corp Magnetic head supporting mechanism
JPH01241070A (en) * 1988-03-22 1989-09-26 Mitsubishi Electric Corp Magnetic disk device
JPH02232876A (en) * 1989-03-06 1990-09-14 Mitsubishi Electric Corp Magnetic disk device
JPH0520825A (en) * 1991-07-15 1993-01-29 Matsushita Electric Ind Co Ltd Negative-pressure type magnetic-head support device and magnetic disk apparatus
JPH0562395A (en) * 1991-08-30 1993-03-12 Nec Ibaraki Ltd Magnetic disk and lift mechanism for magnetic head
JPH0612660A (en) * 1992-06-25 1994-01-21 Sony Corp Disk and disk device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56105358A (en) * 1980-01-22 1981-08-21 Mitsubishi Electric Corp Magnetic head supporting mechanism
JPH01241070A (en) * 1988-03-22 1989-09-26 Mitsubishi Electric Corp Magnetic disk device
JPH02232876A (en) * 1989-03-06 1990-09-14 Mitsubishi Electric Corp Magnetic disk device
JPH0520825A (en) * 1991-07-15 1993-01-29 Matsushita Electric Ind Co Ltd Negative-pressure type magnetic-head support device and magnetic disk apparatus
JPH0562395A (en) * 1991-08-30 1993-03-12 Nec Ibaraki Ltd Magnetic disk and lift mechanism for magnetic head
JPH0612660A (en) * 1992-06-25 1994-01-21 Sony Corp Disk and disk device

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