KR100422432B1 - Actuator arm having sandwich beam structure capable of absorbing vibration and noise generated by high-speed horizontal movement of actuator arm - Google Patents

Actuator arm having sandwich beam structure capable of absorbing vibration and noise generated by high-speed horizontal movement of actuator arm Download PDF

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Publication number
KR100422432B1
KR100422432B1 KR1019960082647A KR19960082647A KR100422432B1 KR 100422432 B1 KR100422432 B1 KR 100422432B1 KR 1019960082647 A KR1019960082647 A KR 1019960082647A KR 19960082647 A KR19960082647 A KR 19960082647A KR 100422432 B1 KR100422432 B1 KR 100422432B1
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South Korea
Prior art keywords
actuator arm
arm
beam structure
horizontal movement
noise generated
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KR1019960082647A
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Korean (ko)
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KR19980063201A (en
Inventor
김우성
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삼성전자주식회사
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Priority to KR1019960082647A priority Critical patent/KR100422432B1/en
Publication of KR19980063201A publication Critical patent/KR19980063201A/en
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    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48Disposition 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
    • G11B5/4806Disposition 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 specially adapted for disk drive assemblies, e.g. assembly prior to operation, hard or flexible disk drives
    • G11B5/4813Mounting or aligning of arm assemblies, e.g. actuator arm supported by bearings, multiple arm assemblies, arm stacks or multiple heads on single arm
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00Record carriers by type
    • G11B2220/20Disc-shaped record carriers
    • G11B2220/25Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2508Magnetic discs
    • G11B2220/2516Hard disks

Abstract

PURPOSE: An actuator arm having a sandwich beam structure capable of absorbing vibration and noise generated by high-speed horizontal movement of the actuator arm is provided to realize a stable servo control environment and user environment. CONSTITUTION: Each beam of an E-block arm(8) to be coupled with a suspension has a slot formed to place a damping element(30) formed of a ductile material, and the damping element is inserted into the slot so that a horizontal buffer part is formed at each suspension-combined part of the E-block arm.

Description

샌드위치 빔 구조를 갖는 액츄에이터 아암Actuator arm with sandwich beam structure

본 발명은 하드 디스크 드라이브의 액츄에이터 아암에 관한 것으로, 특히 진동 및 소음특성이 개선된 샌드위치 빔(sandwitch beam) 구조의 액츄에이터 아암에관한 것이다.The present invention relates to an actuator arm of a hard disk drive, and more particularly to an actuator arm of a sandwich beam structure with improved vibration and noise characteristics.

통상적으로 컴퓨터의 보조기억장치로 사용되는 하드 디스크 드라이브는 도 1에 도시한 바와 같이 내부의 스핀들모터(spindle motor)(22)에 의해 고속으로 회전하는 디스크(2)와, 상기 디스크(2)의 트랙에 기록된 데이타를 기록 또는 독출하기 위한 자기헤드(4)가 부착된 액츄에이터(actuator) 아암(20)을 구비하고 있다. 상기 액츄에이터 아암(20)은 피봇축(10)을 중심으로 회전 가능케 설치하고 그 일단에 설치된 보빈(bobbin)(12) 및 코일이 보이스코일모터(Voice Coil Motor)(18)의 작동에 의해 이동함에 따라 타측선단의 서스팬션(6) 선단에 부착된 자기헤드(4)가 디스크(2)의 양단에서 이동하면서 디스크(2)상의 트랙에 데이타를 기록하거나 독출하게 된다. 이때 디스크(2)의 양단으로 이동하는 서스팬션(6)의 선단에 부착된 자기헤드(4)는 디스크(2)의 고속회전으로 인해 발생되는 기류에 의해 상승되어 미세한 부상높이를 유지한체 이동한다.In general, a hard disk drive used as an auxiliary memory device of a computer includes a disk 2 rotating at a high speed by an internal spindle motor 22 and a disk 2 as shown in FIG. An actuator arm 20 is provided with a magnetic head 4 for recording or reading data recorded in the track. The actuator arm 20 is rotatably installed about the pivot shaft 10 and bobbins 12 and coils installed at one end thereof are moved by the operation of the voice coil motor 18. Accordingly, the magnetic head 4 attached to the front end of the suspension 6 at the other end moves from both ends of the disk 2 to record or read data in the track on the disk 2. At this time, the magnetic head 4 attached to the front end of the suspension 6 moving to both ends of the disk 2 is lifted by the airflow generated by the high speed rotation of the disk 2 to move while maintaining a fine float height.

도 2는 도 1중 액츄에이터(20) 아암의 사시도를 도시한 것이다. 도 2에 도시된 액츄에이터 아암(20)은 보이스코일모터(18)에 인가되는 전류에 의해 피봇축(10)을 중심으로 고속 수평이동하는 E-블럭 아암(8)과, 상기 E-블럭 아암(8)에 체결된 서스팬션(6)과, 상기 서스팬션(6)의 종단에 부착되어 디스크(2)상으로부터 데이타를 액세스하는 헤드(4)로 구성된다.FIG. 2 illustrates a perspective view of the actuator 20 arm in FIG. 1. The actuator arm 20 shown in FIG. 2 includes an E-block arm 8 which moves horizontally about the pivot shaft 10 by a current applied to the voice coil motor 18 and the E-block arm ( A suspension 6 fastened to 8) and a head 4 attached to the end of the suspension 6 for accessing data from the disc 2;

상술한 구성을 갖는 액츄에이터 아암(20)은 실질적으로 일체형의 머신(machine) 가공물로서 드라이브 구동중 고속 수평이동하는 관계로 그 자체가 소음 및 진동원으로 작용하기 때문에 정밀가공되어져야 한다. 그러나 머신 가공된액츄에이터 아암(20)의 특성상 실제 균일가공 되기는 어려우며, 그에 따라 가공면의 불균일성으로 인해 드라이브 구동중 그 자체로부터 발생된 진동의 악화로 인해 서보제어의 정확성을 기할 수 없는 문제점이 있었다. 또한 가공면의 불균일성으로 인한 소음특성의 악화로 드라이브 구동중의 소음이 크게 발생될 수 있는 문제점이 있었다.The actuator arm 20 having the above-described configuration must be precisely processed because it acts as a noise and vibration source due to its high-speed horizontal movement during drive driving as a substantially integral machine workpiece. However, due to the characteristics of the machined actuator arm 20, it is difficult to actually uniformly process, and therefore, there is a problem in that the accuracy of servo control cannot be determined due to the deterioration of vibration generated from the drive itself due to the nonuniformity of the machining surface. In addition, there is a problem that the noise during the drive drive can be greatly generated due to the deterioration of the noise characteristics due to the nonuniformity of the machining surface.

따라서 본 발명의 목적은 액츄에이터 아암의 고속 수평이동시 그 자체로부터 발생되는 진동 및 소음을 흡수하여 안정된 서보제어환경 및 사용자환경을 제공할 수 있는 샌드위치 빔 구조를 갖는 액츄에이터 아암을 제공함에 있다.Accordingly, an object of the present invention is to provide an actuator arm having a sandwich beam structure capable of absorbing vibration and noise generated from itself during high-speed horizontal movement of the actuator arm to provide a stable servo control environment and a user environment.

상기 목적을 달성하기 위한 본 발명은 액츄에이터 아암에 있어서,The present invention for achieving the above object is an actuator arm,

서스팬션이 체결되는 E-블럭 아암의 각 빔마다 연성의 재질로 이루어진 댐핑소자가 위치될 수 있는 슬롯을 형상화하고, 상기 슬롯에 댐핑소자를 끼워 삽입되게 하여 상기 E-블럭 아암의 각 빔을 이원화시킴을 특징으로 한다.For each beam of the E-block arm to which the suspension is fastened, a slot in which a damping element made of a soft material can be positioned is formed, and the damping element is inserted into the slot to dualize each beam of the E-block arm. It is characterized by.

도 1은 일반적인 하드 디스크 드라이브의 기구구조를 설명하기 위한 사시도.1 is a perspective view for explaining the mechanism structure of a typical hard disk drive.

도 2는 도 1중 액츄에이터(20) 아암의 사시도.2 is a perspective view of the arm of the actuator 20 in FIG.

도 3은 본 발명에 따른 샌드위치 빔 구조를 갖는 액츄에이터 아암의 단면도.3 is a cross-sectional view of an actuator arm having a sandwich beam structure in accordance with the present invention.

<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for the main parts of the drawings>

2: 디스크 4: 헤드2: disc 4: head

6: 서스팬션 8: E-블럭 아암(arm)6: Suspension 8: E-block arm

10: 피봇축 12: 보빈(bobbin)10: pivot axis 12: bobbin

14: 래치 철편 16: 마그네트14: latch iron 16: magnet

18: 보이스 코일 모터 20: 액츄에이터 아암18: voice coil motor 20: actuator arm

22: 스핀들모터 26: 스웨이징 홀(swaging hole)22: spindle motor 26: swaging hole

28: 피봇 홀(pivot hole)28: pivot hole

이하 본 발명의 바람직한 실시예를 첨부된 도면을 참조하여 상세히 설명하면 다음과 같다. 우선, 각 도면의 구성 요소들에 참조 부호를 부가함에 있어서, 동일한 구성요소들에 대해서는 비록 다른 도면상에 표시되더라도 동일한 부호가 사용되고 있음에 유의해야 한다. 그리고, 본 발명을 설명함에 있어서, 관련된 공지기능 혹은 구성에 대한 구체적인 설명이 본 발명의 요지를 불필요하게 흐릴 수 있다고 판단되는 경우 그 상세한 설명을 생략한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are used for the same components, even if displayed on different drawings. In describing the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted.

도 3은 본 발명의 일실시예에 따른 샌드위치 빔 구조를 갖는 액츄에이터 아암(20)의 일부 단면도를 도시한 것이다. 상기 샌드위치 빔 구조를 갖는 액츄에이터 아암(20)의 구성은 도 3에 도시된 바와 같이 일반적인 아암의 구조에서 서스팬션(6)이 체결되는 E-블럭 아암(8)의 각 빔마다 연성의 재질로 이루어진 댐핑(damping)소자가 위치될 수 있는 슬롯(slot) 혹은 홀(hole)을 형상화시켜 댐핑소자(예를들면, POLIMRR)(30)를 위치시킴으로서, E-블럭 아암(8)의 서스팬션(6) 결합부위마다 수평적인 완충부위가 형성되어 일체형 E-블럭 아암(8)의 각 빔이 이원화되는 구조가 된다. 한편 제조공정에 있어서는 종래의 공정에서 댐핑소자(30)가 위치될 수 있는 부위의 가공단계(혹은 해당부위 설정후 몰딩하는 방법), 댐핑소자(30) 삽입 및 결합가공 단계를 추가함으로서 상기 E-블럭 아암(8)의 각 빔구조를 이원화시킬 수 있다. 따라서 드라이브 동작중 액츄에이터 아암(20)의 고속 수평이동에 의해 그 자체적으로 발생되는 진동 및 소음은 댐핑소자(30)에 의해 완충 및 흡수됨으로서 서보제어의 안정을 기할 수 있게 된다.3 illustrates a partial cross-sectional view of an actuator arm 20 having a sandwich beam structure in accordance with one embodiment of the present invention. The configuration of the actuator arm 20 having the sandwich beam structure is damping made of a soft material for each beam of the E-block arm 8 to which the suspension 6 is fastened in the general arm structure as shown in FIG. 3. coupling the suspension 6 of the E-block arm 8 by positioning a damping element (e.g., POLIMRR) 30 by shaping a slot or hole in which the element may be located. Horizontal buffering portions are formed for each portion, resulting in a structure in which each beam of the integrated E-block arm 8 is dualized. Meanwhile, in the manufacturing process, by adding the processing step (or a method of molding after setting the corresponding part) where the damping element 30 can be positioned in the conventional process, and inserting and damping the damping element 30, the E- Each beam structure of the block arm 8 can be dualized. Therefore, vibration and noise generated by the high-speed horizontal movement of the actuator arm 20 during the drive operation are buffered and absorbed by the damping element 30, thereby making it possible to stabilize the servo control.

상술한 바와 같이 본 발명은 E-블럭 아암의 각 빔마다 댐핑소자가 위치될 수 있는 슬롯 혹은 홀을 형상화시켜 댐핑소자를 위치시킴으로서, 드라이브 동작중 고속 수평이동하는 액츄에이터 아암 그 자체로부터 발생되는 진동 및 소음을 완충시킬 수 있는 잇점이 있다.As described above, the present invention forms a slot or a hole in which the damping element can be positioned for each beam of the E-block arm, thereby positioning the damping element, thereby generating vibration and There is an advantage to cushion the noise.

Claims (1)

하드 디스크 드라이브에 있어서,In the hard disk drive, 서스팬션이 체결되는 E-블럭 아암의 각 빔마다 연성의 재질로 이루어진 댐핑소자가 위치될 수 있는 슬롯을 형상화하고, 상기 슬롯에 댐핑소자를 끼워 삽입되게 하는 샌드위치 빔 구조를 갖는 액츄에이터 아암을 구비함을 특징으로 하는 하드 디스크 드라이브.Each actuator of the E-block arm to which the suspension is fastened forms a slot in which a damping element made of a flexible material can be positioned, and has an actuator arm having a sandwich beam structure for inserting the damping element into the slot. Featuring hard disk drive.
KR1019960082647A 1996-12-31 1996-12-31 Actuator arm having sandwich beam structure capable of absorbing vibration and noise generated by high-speed horizontal movement of actuator arm KR100422432B1 (en)

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KR1019960082647A KR100422432B1 (en) 1996-12-31 1996-12-31 Actuator arm having sandwich beam structure capable of absorbing vibration and noise generated by high-speed horizontal movement of actuator arm

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KR1019960082647A KR100422432B1 (en) 1996-12-31 1996-12-31 Actuator arm having sandwich beam structure capable of absorbing vibration and noise generated by high-speed horizontal movement of actuator arm

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KR100422432B1 true KR100422432B1 (en) 2004-07-23

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Families Citing this family (3)

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Publication number Priority date Publication date Assignee Title
KR100385325B1 (en) * 1999-10-29 2003-05-23 삼성전자주식회사 An auxiliary mass damper for an actuator arm an a disk drive
JP2002170345A (en) * 2000-11-29 2002-06-14 Internatl Business Mach Corp <Ibm> Head assembly, disk drive device, hard disk drive and manufacture of disk drive device
KR20070095468A (en) 2005-07-12 2007-10-01 삼성전자주식회사 Head stack assembly, hard disk drive having the same and manufacturing method of the hard disk drive

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6161277A (en) * 1984-08-31 1986-03-29 Nec Corp Arm for positioning carriage of magnetic disk device
JPH03122812A (en) * 1989-10-05 1991-05-24 Nec Corp Magnetic head positioning device for magnetic disk device
JPH0479085A (en) * 1990-07-20 1992-03-12 Tokico Ltd Magnetic disk device
JPH05250823A (en) * 1992-03-03 1993-09-28 Matsushita Electric Ind Co Ltd Disk device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6161277A (en) * 1984-08-31 1986-03-29 Nec Corp Arm for positioning carriage of magnetic disk device
JPH03122812A (en) * 1989-10-05 1991-05-24 Nec Corp Magnetic head positioning device for magnetic disk device
JPH0479085A (en) * 1990-07-20 1992-03-12 Tokico Ltd Magnetic disk device
JPH05250823A (en) * 1992-03-03 1993-09-28 Matsushita Electric Ind Co Ltd Disk device

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