KR100291420B1 - Balancing device of revolution body - Google Patents

Balancing device of revolution body Download PDF

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Publication number
KR100291420B1
KR100291420B1 KR1019970066127A KR19970066127A KR100291420B1 KR 100291420 B1 KR100291420 B1 KR 100291420B1 KR 1019970066127 A KR1019970066127 A KR 1019970066127A KR 19970066127 A KR19970066127 A KR 19970066127A KR 100291420 B1 KR100291420 B1 KR 100291420B1
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KR
South Korea
Prior art keywords
race
balancing device
balls
rotating body
balancing
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KR1019970066127A
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Korean (ko)
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KR19990047634A (en
Inventor
홍민표
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윤종용
삼성전자주식회사
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Priority to KR1019970066127A priority Critical patent/KR100291420B1/en
Publication of KR19990047634A publication Critical patent/KR19990047634A/en
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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/20—Driving; Starting; Stopping; Control thereof
    • G11B19/2009—Turntables, hubs and motors for disk drives; Mounting of motors in the drive
    • G11B19/2027—Turntables or rotors incorporating balancing means; Means for detecting imbalance
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/20—Driving; Starting; Stopping; Control thereof
    • G11B19/2009—Turntables, hubs and motors for disk drives; Mounting of motors in the drive
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2213/00—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions
    • C10M2213/06—Perfluoro polymers
    • C10M2213/062—Polytetrafluoroethylene [PTFE]

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  • Holding Or Fastening Of Disk On Rotational Shaft (AREA)

Abstract

PURPOSE: A balancing device of a revolution body is provided to form a fluorine resin layer over the entire surface of a race, to reduce frictional resistance between balls and an inner side of the race, thereby balancing and preventing capacity deterioration caused by abrasion. CONSTITUTION: A fluorine resin layer(55) is formed over the entire surface of a race(50). A fluorine resin is used by polytetrafluoroethylene. If power is applied in the state of receiving balls(60) within the race(50), a revolution body rotates and a turn table(30) rotates by the rotation of the revolution body. The balls(60) rotate to compensate an unbalance between the turn table(30) and an optical disk.

Description

회전체의 밸런싱 장치Balancing device of rotating body

본 발명은 회전체의 밸런싱 장치에 관한 것으로, 더욱 상세하게는 CD-ROM, DVD 등과 같은 광 디스크를 사용하는 기기의 회전체가 고속으로 회전할 때 턴테이블(turn table)또는 디스크 클램프에 형성된 밸런싱 장치의 레이스(race)의 내면과 볼들과의 마찰계수를 작게 하여 밸런싱 성능을 향상시킨 회전체의 밸런싱 장치에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a balancing device for a rotating body, and more particularly, to a balancing device formed on a turn table or a disk clamp when a rotating body of an apparatus using an optical disk such as a CD-ROM, a DVD, etc. rotates at high speed. The balancing device of the rotating body which improved the balancing performance by making the friction coefficient between the inner surface of the race and the balls small.

널리 공지된 바와 같이, 최근 들어 광 디스크를 사용하는 기기의 회전수가 고속화 되면서 디스크의 형상 불균형과 디스크 중심 홀(Hole)의 편심등에 의한 편심질량으로 인한 호전시 디스크의 진동을 저감하기 위하여 턴테이블의 원주를 따라 레이스를 형성하고, 레이스의 내부 공간에 다수개의 볼들과 유동성 액체를 투입하여, 소정 회전수 이상에서 볼 및 유동성 액체가 자동으로 편심이 없어지는 위치에 위치하도록 하는 밸런싱 장치가 선보이고 있다.As is well known, in recent years, as the rotation speed of devices using optical disks is increased, the circumference of the turntable is reduced in order to reduce the vibration of the disks due to eccentric mass due to disc shape imbalance and eccentricity of the disk center hole. Forming a race along, and putting a plurality of balls and the liquid liquid into the inner space of the race, a balancing device is introduced to position the ball and the liquid liquid is automatically eccentrically at a predetermined rotation speed or more.

그러나 종래의 밸런싱장치에서 레이스의 내면은 턴테이블의 재질인 알루미늄이나 규소강판 등의 금속 또는 플라스틱 재질로 이루어지기 때문에 여러 가지의 문제점을 발생한다.However, in the conventional balancing device, since the inner surface of the race is made of a metal or plastic material such as aluminum or silicon steel sheet which is a turntable material, various problems occur.

진다.Lose.

먼저, 레이스의 내면과 볼들과의 마찰저항이 크기 때문에 레이스의 내면이 마모되고 밸런싱 성능에 악영향을 끼쳐 정밀한 밸런싱이 곤란하다는 문제점이 있다.First, since the frictional resistance between the inner surface of the race and the balls is large, the inner surface of the race wears out and adversely affects the balancing performance, which makes precise balancing difficult.

또한, 볼과 함께 윤활액이나 밸런싱액을 사용하는 경우에 윤활액이 점성에 의하여 볼과 레이스의 내면에 점착되어 밸런싱을 방해하는 저항력으로 작용한다는 문제점이 있다.In addition, in the case of using a lubricating liquid or a balancing liquid in conjunction with the ball, there is a problem in that the lubricating liquid adheres to the inner surface of the ball and the race due to viscosity and acts as a resistance to hinder the balancing.

따라서, 본 발명의 목적은 레이스 내면의 마모를 방지하고, 볼과 레이스간의 마찰저항을 작게하는데 있다.Accordingly, an object of the present invention is to prevent wear of the inner surface of the race and to reduce the frictional resistance between the ball and the race.

본 발명의 다른 목적은 볼과 함께 투입되는 윤활액이 레이스 내면에 점착되지 않도록 하는데 있다.Another object of the present invention is to prevent the lubricating liquid introduced with the ball from sticking to the inner surface of the race.

도 1은 본 발명이 적용되는 시디롬 드라이브를 나타낸 단면도이고,1 is a cross-sectional view showing a CD-ROM drive to which the present invention is applied,

도 2는 본 발명의 바람직한 실시예에 따른 밸런싱 장치를 나타내는 부분 확대 단면도이다.2 is a partially enlarged cross-sectional view showing a balancing device according to a preferred embodiment of the present invention.

본 발명의 일측면에 따르면, 회전체의 회전중심에 중심이 결합된 턴테이블의 원주를 따라 레이스가 소정 깊이와 폭으로 형성되고, 레이스에는 다수의 볼들이 수용되며, 레이스 내면에는 전면에 걸쳐 불소수지층이 형성된다.According to one aspect of the invention, the race is formed with a predetermined depth and width along the circumference of the turntable coupled to the center of rotation of the rotating body, a plurality of balls are accommodated in the race, the inner surface of the race to fluorine water throughout Strata are formed.

바람직하게, 불소수지로는 폴리테트라플루오로에틸렌이 사용될 수 있고, 불소수지층의 두께는 수 ㎛ ∼ 수백 ㎛이다.Preferably, polytetrafluoroethylene may be used as the fluororesin, and the thickness of the fluororesin layer is several μm to several hundred μm.

본 발명의 다른 특징과 효과는, 이하 첨부 도면을 참조하여 상세히 설명할 본 발명의 바람직한 실시예에 의해 더욱 명확해질 것이다.Other features and effects of the present invention will be further clarified by the preferred embodiments of the present invention which will be described in detail below with reference to the accompanying drawings.

도 1은 본 발명이 적용되는 시디롬 드라이브를 나타낸 단면도이다.1 is a cross-sectional view showing a CD-ROM drive to which the present invention is applied.

시디롬 드라이브 장치는, 크게 보아 하우징에 고정되어 있는 모터(10)와, 모터(10)의 회전체(20)에 고정되어 회전되는 턴테이블(30)과, 턴테이블(30)의 상부에 안착되어 회전되는 디스크(40)로 구성되어 있다.The CD-ROM drive device includes a motor 10 fixed to a housing, a turntable 30 fixed and rotated by a rotating body 20 of the motor 10, and a seated and rotated upper part of the turntable 30. The disk 40 is comprised.

턴테이블(30)에는 디스크(40)를 안착한 상태에서 회전체(20)가 회전되는 경우, 언밸런스를 잡아주기 위하여 밸런싱 장치가 장착된다. 즉, 턴테이블(30)의 원주를 따라 소정의 폭과 깊이를 갖는 레이스(50)가 형성되고, 레이스(50)의 내부 공간에 동일 형상의 크기와 재질로 이루어진 다수개의 볼들(60)을 일렬로 배치된다. 또한, 레이스(50)에 수용된 볼들(60)이 회전되면서 이탈되는 것을 방지하기 위하여, 레이스(50)의 상부에는 커버(70)가 고정된다.When the rotating body 20 is rotated while the disk 40 is seated on the turntable 30, a balancing device is mounted to hold the unbalance. That is, a race 50 having a predetermined width and depth is formed along the circumference of the turntable 30, and a plurality of balls 60 made of the same size and material are arranged in a line in the inner space of the race 50. Is placed. In addition, in order to prevent the balls 60 accommodated in the race 50 from being detached from being rotated, the cover 70 is fixed to the upper portion of the race 50.

도 2를 참조하면, 본 발명의 바람직한 실시예에 따른 밸런싱 장치를 나타내는 부분 단면도가 도시되어 있다.2, there is shown a partial cross-sectional view showing a balancing device according to a preferred embodiment of the present invention.

도시된 바와 같이, 리세스(50)의 내면 전면에 걸쳐 불소수지층(55)이 형성된다. 또한 불소수지는 불소를 함유하는 고분자로서 바람직하게 폴리테트라플루오로에틸렌(polytetrafluoroethylene)이 사용되며, 예를들어 듀퐁사의 테프론(teflon:상표명)을 들 수 있다.As shown, the fluororesin layer 55 is formed over the entire inner surface of the recess 50. In addition, the fluororesin is preferably a polytetrafluoroethylene (polytetrafluoroethylene) as a polymer containing fluorine. For example, Teflon (trade name) of DuPont.

바람직하게 불소수지층(55)의 두께는 수 ㎛ ∼ 수백 ㎛ 정도로, 통상 유기용제에 녹여 도포한다.Preferably, the thickness of the fluororesin layer 55 is about several micrometers to several hundred micrometers, and it melt | dissolves in an organic solvent and apply | coats normally.

불소수지는 발수성, 윤활성이 우수하고 마찰계수가 작아 내마모성이 우수한 재질이다.Fluorine resin has excellent water repellency, lubricity and low coefficient of friction, and has high wear resistance.

이와 같이 레이스(50)의 내면 전면에 불소수지층(55)을 형성한 레이스(50)내에 볼들(60)을 수용한 상태에서, 전원을 인가하면, 회전체(20)가 회전하고 이에 따라 턴테이블(30)이 회전한다. 이와 동시에 볼들(60)이 회전되면서 턴테이블(30)과 광 디스크의 언밸런싱을 보정하게 된다.Thus, when power is applied in a state in which the balls 60 are accommodated in the race 50 in which the fluorine resin layer 55 is formed on the entire inner surface of the race 50, the rotating body 20 rotates and thus the turntable. 30 rotates. At the same time, as the balls 60 rotate, the unbalance of the turntable 30 and the optical disk is corrected.

이때, 상기한 바와 같이, 불소수지는 마찰계수가 작기 때문에 볼들과 레이스의 내면과의 마찰저항이 작아 정밀한 밸런싱이 가능하다. 또한 레이스 내면이 마모되기 어려워 마모에 의한 성능저하를 방지할 수 있다.At this time, as described above, since the fluorine resin has a small coefficient of friction, the frictional resistance between the balls and the inner surface of the race is small, so that accurate balancing is possible. In addition, since the inner surface of the race is hard to wear, performance degradation due to wear can be prevented.

한편, 불소수지는 발수성이 우수하기 때문에 볼들과 함께 윤활액을 투입한 경우에도 레이스의 내면에 윤활액이 점착되지 않아 밸런싱 효과를 상승시키는 이점이 있다.On the other hand, since the fluorine resin is excellent in water repellency, even when the lubricating liquid is added together with the balls, the lubricating liquid is not adhered to the inner surface of the race, thereby increasing the balancing effect.

이상에서 본 발명의 특정한 실시예가 설명되고 도시되었지만 본 발명이 당업자에 의해 다양하게 변형되어 실시될 가능성이 있는 것은 자명하다.While specific embodiments of the present invention have been described and illustrated above, it will be apparent that the present invention may be modified and practiced by those skilled in the art.

이와 같은 변형된 실시예들은 본 발명의 기술적 사상이나 전망으로부터 개별적으로 이해되어서는 안되며, 또한 이와 같이 변형된 실시예들은 본 발명의 첨부된 특허청구범위 안에 속한다 해야 할 것이다.Such modified embodiments should not be individually understood from the technical spirit or the prospect of the present invention, and such modified embodiments should fall within the appended claims of the present invention.

이상 설명한 바와 같이, 본 발명에 의한 회전체의 볼 밸런싱 장치에 의하면, 레이스의 내면 전면에 걸쳐 불소수지층을 형성하므로서 볼들과 레이스의 내면과의 마찰저항을 줄여 정밀한 밸런싱이 가능하고, 레이스 내면이 마모되기 어려워 마모에 의한 성능저하를 방지할 수 있으며, 볼들과 함께 윤활액을 투입한 경우에도 레이스의 내면에 윤활액이 점착되지 않아 밸런싱 효과를 상승시키는 이점이 있다.As described above, according to the ball balancing device of the rotating body according to the present invention, by forming a fluorine resin layer over the entire inner surface of the race, it is possible to precisely balance the frictional resistance between the balls and the inner surface of the race, Difficult to wear can prevent performance degradation due to wear, even when the lubricant is added with the ball has the advantage of increasing the balancing effect because the lubricant is not adhered to the inner surface of the race.

Claims (3)

회전체의 밸런싱 장치에 있어서,In the balancing device of a rotating body, 상기 회전체의 회전중심에 중심이 결합된 턴테이블의 원주를 따라 소정 깊이와 폭으로 형성된 레이스와;A race formed at a predetermined depth and width along a circumference of a turntable coupled to a center of rotation of the rotating body; 상기 레이스에 수용된 다수의 볼들을 포함하며,A plurality of balls housed in the race, 상기 레이스 내면에는 전면에 걸쳐 불소수지층이 형성되는 것을 특징으로 하는 회전체의 밸런싱 장치.Balancing device of the rotating body, characterized in that the fluorine resin layer is formed on the inner surface of the race. 제 1 항에 있어서, 상기 불소수지는 폴리테트라플루오로에틸렌인 것을 특징으로 하는 회전체의 밸런싱 장치.2. The balancing device of a rotating body according to claim 1, wherein said fluororesin is polytetrafluoroethylene. 제 1 항에 있어서, 상기 불소수지층의 두께는 수 ㎛ ∼ 수백 ㎛인 것을 특징으로 하는 회전체의 밸런싱 장치.2. The balancing device of claim 1, wherein the fluororesin layer has a thickness of several micrometers to several hundred micrometers.
KR1019970066127A 1997-12-05 1997-12-05 Balancing device of revolution body KR100291420B1 (en)

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KR100291420B1 true KR100291420B1 (en) 2001-06-01

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR930003493A (en) * 1991-07-10 1993-02-24 황선두 Rotor balance adjuster of motor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR930003493A (en) * 1991-07-10 1993-02-24 황선두 Rotor balance adjuster of motor

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