KR101047473B1 - Spindle motor - Google Patents

Spindle motor Download PDF

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Publication number
KR101047473B1
KR101047473B1 KR1020090048570A KR20090048570A KR101047473B1 KR 101047473 B1 KR101047473 B1 KR 101047473B1 KR 1020090048570 A KR1020090048570 A KR 1020090048570A KR 20090048570 A KR20090048570 A KR 20090048570A KR 101047473 B1 KR101047473 B1 KR 101047473B1
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KR
South Korea
Prior art keywords
turntable
spindle motor
rotating shaft
disk
guide member
Prior art date
Application number
KR1020090048570A
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Korean (ko)
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KR20100129948A (en
Inventor
윤호업
Original Assignee
엘지이노텍 주식회사
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Priority to KR1020090048570A priority Critical patent/KR101047473B1/en
Publication of KR20100129948A publication Critical patent/KR20100129948A/en
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Publication of KR101047473B1 publication Critical patent/KR101047473B1/en

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/24—Casings; Enclosures; Supports specially adapted for suppression or reduction of noise or vibrations
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
    • G11B17/02—Details
    • G11B17/022—Positioning or locking of single discs
    • G11B17/028—Positioning or locking of single discs of discs rotating during transducing operation
    • G11B17/0282—Positioning or locking of single discs of discs rotating during transducing operation by means provided on the turntable
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
    • G11B17/02—Details
    • G11B17/022—Positioning or locking of single discs
    • G11B17/028—Positioning or locking of single discs of discs rotating during transducing operation
    • G11B17/0284—Positioning or locking of single discs of discs rotating during transducing operation by clampers
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/167—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings
    • H02K5/1675—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings radially supporting the rotary shaft at only one end of the rotor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/26—Means for adjusting casings relative to their supports
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/003—Couplings; Details of shafts

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Holding Or Fastening Of Disk On Rotational Shaft (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

스핀들 모터가 개시된다. 상기 스핀들 모터는 센터가이드부재를 탄성 지지하는 탄성부재인 탄성지지바가 턴테이블에 일체로 형성되므로, 조립공정이 간편하다. 따라서, 생산성이 향상된다.Spindle motor is disclosed. Since the spindle motor has an elastic support bar, which is an elastic member for elastically supporting the center guide member, is integrally formed on the turntable, the assembly process is easy. Therefore, productivity is improved.

Description

스핀들 모터 {SPINDLE MOTOR}Spindle Motors {SPINDLE MOTOR}

본 발명은 스핀들 모터에 관한 것이다.The present invention relates to a spindle motor.

스핀들 모터는 직선왕복운동하는 광 픽업이 디스크에 기록된 정보를 재생하거나 디스크에 정보를 기록할 수 있도록 디스크를 회전시키는 기능을 한다.The spindle motor functions to rotate the disk so that the linear reciprocating optical pickup reproduces or records the information recorded on the disk.

도 1은 종래의 스핀들 모터의 요부 단면도로서, 이를 설명한다.1 is a cross-sectional view of main parts of a conventional spindle motor, which will be described.

도시된 바와 같이, 회전축(11)에 디스크(50)가 탑재되는 턴테이블(13)이 결합된다. 턴테이블(13) 상측의 회전축(11)의 외주면에는 클램프 플레이트(15)가 결합되고, 클램프 플레이트(15)에는 클램프 마그네트(17)가 결합된다.As shown, the turntable 13 on which the disc 50 is mounted is coupled to the rotation shaft 11. The clamp plate 15 is coupled to the outer circumferential surface of the rotary shaft 11 above the turntable 13, and the clamp magnet 17 is coupled to the clamp plate 15.

그리고, 턴테이블(13)과 클램프 플레이트(15) 사이의 회전축(11)의 외주면에는 디스크(50)가 삽입 지지되는 센터가이드부재(21)가 승강가능하게 설치되고, 턴테이블(13)과 센터가이드부재(21) 사이에는 센터가이드부재(21)를 탄성 지지하는 탄성부재(23)가 설치된다.In addition, a center guide member 21 on which the disk 50 is inserted and supported is liftable on the outer circumferential surface of the rotation shaft 11 between the turntable 13 and the clamp plate 15, and the turntable 13 and the center guide member are provided. Between the 21 is provided with an elastic member 23 for elastically supporting the center guide member 21.

상기와 같은 종래의 스핀들 모터는 탄성부재(23)가 별도로 마련되어 조립되므로, 생산성이 저하되는 단점이 있다.The conventional spindle motor as described above has an disadvantage in that productivity is reduced because the elastic member 23 is separately provided and assembled.

본 발명은 상기와 같은 종래 기술의 문제점을 해결하기 위하여 안출된 것으로, 본 발명의 목적은 생산성을 향상시킬 수 있는 스핀들 모터를 제공함에 있다.The present invention has been made to solve the problems of the prior art as described above, the object of the present invention is to provide a spindle motor that can improve the productivity.

상기 목적을 달성하기 위한 본 발명에 따른 스핀들 모터는, 회전가능하게 설치된 회전축; 상기 회전축에 결합되어 상기 회전축과 함께 회전하며 디스크가 탑재되는 턴테이블; 상기 회전축의 일단부측에 결합되는 클램프 마그네트; 상기 회전축을 따라 승강가능하게 상기 턴테이블과 상기 클램프 마그네트 사이에 설치되며 상기 디스크가 지지되는 센터가이드부재; 상기 턴테이블에 일체로 형성되어 상기 센터가이드부재를 상기 회전축의 길이방향으로 탄성 지지하는 탄성부재를 포함한다.Spindle motor according to the present invention for achieving the above object, the rotating shaft rotatably installed; A turntable coupled to the rotating shaft to rotate together with the rotating shaft and mounted with a disk; A clamp magnet coupled to one end side of the rotation shaft; A center guide member installed between the turntable and the clamp magnet to be able to move up and down along the rotation shaft and to support the disk; It is formed integrally with the turntable includes an elastic member for elastically supporting the center guide member in the longitudinal direction of the rotating shaft.

본 발명에 따른 스핀들 모터는 센터가이드부재를 탄성 지지하는 탄성부재인 탄성지지바가 턴테이블에 일체로 형성되므로, 조립공정이 간편하다. 따라서, 생산성이 향상된다.In the spindle motor according to the present invention, since the elastic support bar, which is an elastic member for elastically supporting the center guide member, is integrally formed on the turntable, the assembly process is simple. Therefore, productivity is improved.

이하, 첨부된 도면을 참조하여 본 발명의 일 실시예에 따른 스핀들 모터를 상세히 설명한다.Hereinafter, a spindle motor according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

도 2는 본 발명의 일 실시예에 따른 스핀들 모터의 단면도이고, 도 3은 도 2에 도시된 턴테이블의 사시도이다.2 is a cross-sectional view of the spindle motor according to an embodiment of the present invention, Figure 3 is a perspective view of the turntable shown in FIG.

도시된 바와 같이, 베이스(110)에 수직으로 베어링하우징(120)이 기립 설치 된다.As shown, the bearing housing 120 is vertically installed perpendicular to the base 110.

이하, 베이스(110)를 포함한 다른 구성요소들의 면 및 방향을 지칭함에 있어서, 베이스(110)의 수직방향 상측을 향하는 면 및 방향을 "상면 및 상측", 하측을 향하는 면 및 방향을 "하면 및 하측"이라 한다.Hereinafter, in referring to the surface and the direction of other components including the base 110, the "upper surface and the upper side" and the lower surface and the direction "upwards and the upper side" of the base 110 in the vertical direction Lower side ".

베어링하우징(120)은 상면이 개방된 원통형으로 마련되어 하측 외주면이 베이스(110)에 고정된다. 베어링하우징(120)의 내주면에는 베어링(125)이 압입 고정되고, 베어링(125)에는 회전축(130)의 하부측이 지지되어 회전가능하게 설치된다.The bearing housing 120 has a cylindrical shape with an open upper surface, and a lower outer circumferential surface is fixed to the base 110. The bearing 125 is press-fitted and fixed to the inner circumferential surface of the bearing housing 120, and the lower side of the rotating shaft 130 is supported on the bearing 125 to be rotatably installed.

베어링하우징(120)에는 고정자(140)가 고정되고, 회전축(130)에는 회전자(150)가 고정된다.The stator 140 is fixed to the bearing housing 120, and the rotor 150 is fixed to the rotating shaft 130.

고정자(140)는 베어링하우징(120)의 외주면에 고정된 코어(141)와 코어(141)에 권선된 코일(145)을 가지고, 회전자(150)는 하면이 개방된 원통형으로 마련되어 베어링하우징(120) 상측의 회전축(130)의 외주면에 상면 중앙부측이 고정된 로터요크(151)와 로터요크(151)의 내주면에 결합되어 고정자(140)와 대향하는 마그네트(155)를 가진다.The stator 140 has a core 141 fixed to the outer circumferential surface of the bearing housing 120 and a coil 145 wound on the core 141, and the rotor 150 is provided in a cylindrical shape with an open lower surface of the bearing housing ( 120 is coupled to the inner surface of the rotor yoke 151 and the rotor yoke 151 fixed to the upper center portion on the outer circumferential surface of the upper rotary shaft 130 and has a magnet 155 facing the stator 140.

그리하여, 코일(145)에 전류가 인가되면, 코일(145)과 마그네트(155)의 작용에 의하여 마그네트(155)가 회전하고, 이로인해 로터요크(151) 및 회전축(130)이 회전하는 것이다.Thus, when a current is applied to the coil 145, the magnet 155 is rotated by the action of the coil 145 and the magnet 155, thereby rotating the rotor yoke 151 and the rotating shaft 130.

로터요크(151) 상측의 회전축(130)의 외주면에는 디스크(50)가 탑재되는 턴테이블(160)이 고정되어 회전축(130)과 함께 회전하고, 턴테이블(160)의 상면에는 디스크(50)가 접촉 지지되는 펠트(171)가 결합된다. 펠트(171)는 디스크(50)가 미 끄러지지 않고 회전하도록 지지한다.The turntable 160 on which the disk 50 is mounted is fixed to the outer circumferential surface of the rotating shaft 130 above the rotor yoke 151 to rotate together with the rotating shaft 130, and the disk 50 contacts the upper surface of the turntable 160. Supported felt 171 is coupled. The felt 171 supports the disk 50 to rotate without slipping.

회전축(130) 상단부측 외주면에는 클램프 플레이트(181)가 압입 고정되고, 클램프 플레이트(181)에는 클램프 마그네트(185)가 접착 결합된다.The clamp plate 181 is press-fitted to the outer circumferential surface of the upper end side of the rotating shaft 130, and the clamp magnet 185 is adhesively bonded to the clamp plate 181.

디스크(50)가 턴테이블(160)에 탑재되면, 디스크(50)는 펠트(171)와 접촉한다. 그러면, 클램프 마그네트(185)의 상측에서 제품측의 클램퍼(미도시)가 하강하여 디스크(50)에 접촉된다. 이때, 클램프 마그네트(185)는 상기 클램퍼를 펠트(171)측으로 당겨서 상기 클램퍼에 의하여 디스크(50)가 펠트(171)에 밀착되도록 지지한다.When the disk 50 is mounted on the turntable 160, the disk 50 contacts the felt 171. Then, the clamper (not shown) on the product side of the upper side of the clamp magnet 185 is lowered to contact the disk 50. At this time, the clamp magnet 185 pulls the clamper toward the felt 171 to support the disk 50 to be in close contact with the felt 171 by the clamper.

턴테이블(160)과 클램프 플레이트(181) 사이의 회전축(130) 외주면에는 센터가이드부재(190)가 회전축(130)을 따라 승강가능하게 설치되고, 센터가이드부재(190)에는 디스크(50)의 내주면이 삽입 지지된다.A center guide member 190 is installed on the outer circumferential surface of the rotating shaft 130 between the turntable 160 and the clamp plate 181 so as to be liftable along the rotating shaft 130, and the inner circumferential surface of the disk 50 is provided on the center guide member 190. This insert is supported.

턴테이블(160)에는 센터가이드부재(190)를 탄성 지지하는 탄성부재가 일체로 형성된다.The turntable 160 is integrally formed with an elastic member for elastically supporting the center guide member 190.

상세히 설명하면, 상기 탄성부재는 외팔보 형태로 턴테이블(160)일체로 형성된 탄성지지바(161)로 마련된다. 탄성지지바(161)는 턴테이블(160)의 중심을 기준으로 방사상으로 복수개 형성되며, 턴테이블(160)의 상면을 "⊂" 또는 "⊃" 형태로 절개하여 벤딩 형성한다. 탄성지지바(161)의 상단부가 센터가이드부재(190)의 하면에 접촉되어 센터가이드부재(190)를 탄성 지지한다.In detail, the elastic member is provided with an elastic support bar 161 formed integrally with the turntable 160 in the form of a cantilever beam. The elastic support bar 161 is formed in a plurality of radially with respect to the center of the turntable 160, the upper surface of the turntable 160 is formed by cutting in the form of "⊃" or "⊃" bending. The upper end of the elastic support bar 161 is in contact with the lower surface of the center guide member 190 to elastically support the center guide member 190.

턴테이블(160)은 합성수지제로 형성되므로, 상기 탄성부재인 탄성지지바(161)로 합성수지제이다. 그리고, 회전축(130)의 길이방향인 탄성지지바(161)의 두께는 원하는 탄성력의 정도에 따라 적절하게 조절하면 된다.Since the turntable 160 is made of synthetic resin, the elastic support bar 161, which is the elastic member, is made of synthetic resin. In addition, the thickness of the elastic support bar 161 in the longitudinal direction of the rotation shaft 130 may be appropriately adjusted according to the desired degree of elastic force.

도 2의 미설명 부호 175는 디스크(50) 및 턴테이블(160)의 편심에 의하여 발생하는 진동을 저감하기 위한 볼이다.Reference numeral 175 of FIG. 2 is a ball for reducing vibration generated by the eccentricity of the disk 50 and the turntable 160.

이상에서는, 본 발명의 일 실시예에 따라 본 발명을 설명하였지만, 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자가 본 발명의 기술적 사상을 벗어나지 않는 범위 내에서 변경 및 변형한 것도 본 발명에 속함은 당연하다.While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Of course.

도 1은 종래의 스핀들 모터의 요부 단면도.1 is a sectional view of principal parts of a conventional spindle motor.

도 2는 본 발명의 일 실시예에 따른 스핀들 모터의 단면도.2 is a cross-sectional view of the spindle motor according to an embodiment of the present invention.

도 3은 도 2에 도시된 턴테이블의 사시도.3 is a perspective view of the turntable shown in FIG.

* 도면의 주요부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings

110 : 베이스 120 : 베어링하우징110: base 120: bearing housing

130 : 회전축 160 : 턴테이블130: rotation axis 160: turntable

161 : 탄성지지바 190 : 센터가이드부재161: elastic support bar 190: center guide member

Claims (5)

회전가능하게 설치된 회전축;A rotating shaft rotatably installed; 상기 회전축에 결합되어 상기 회전축과 함께 회전하며 디스크가 탑재되는 턴테이블;A turntable coupled to the rotating shaft to rotate together with the rotating shaft and having a disk mounted thereon; 상기 회전축의 일단부측에 결합되는 클램프 마그네트;A clamp magnet coupled to one end side of the rotation shaft; 상기 회전축을 따라 승강가능하게 상기 턴테이블과 상기 클램프 마그네트 사이에 설치되며 상기 디스크가 지지되는 센터가이드부재;A center guide member installed between the turntable and the clamp magnet to be able to move up and down along the rotation shaft and to support the disk; 상기 턴테이블에 일체로 형성되어 상기 센터가이드부재를 상기 회전축의 길이방향으로 탄성 지지하는 탄성부재를 포함하는 스핀들 모터.And an elastic member integrally formed on the turntable to elastically support the center guide member in the longitudinal direction of the rotating shaft. 제 1 항에 있어서,The method of claim 1, 상기 탄성부재는 외팔보 형태로 상기 턴테이블에 일체로 형성된 복수의 탄성지지바인 스핀들 모터.The elastic member is a spindle motor that is a plurality of elastic support bar integrally formed on the turntable in the form of a cantilever. 제 2 항에 있어서,The method of claim 2, 상기 탄성지지바는 상기 턴테이블의 중심을 기준으로 방사상으로 형성된 스핀들 모터.The elastic support bar is a spindle motor formed radially with respect to the center of the turntable. 제 2 항에 있어서,The method of claim 2, 상기 탄성지지바는 상기 턴테이블을 절개하여 벤딩 형성한 스핀들 모터.The elastic support bar is a spindle motor formed by bending the turntable cutting. 제 1 항에 있어서,The method of claim 1, 상기 턴테이블과 상기 탄성부재는 합성수지제인 스핀들 모터.And said turntable and said elastic member are made of synthetic resin.
KR1020090048570A 2009-06-02 2009-06-02 Spindle motor KR101047473B1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR950015356U (en) * 1993-11-20 1995-06-19 Turntable of mini disc player
KR970071634A (en) * 1996-04-16 1997-11-07 김광호 Disc Clamping Device for Disc Players
KR20030009111A (en) * 2001-05-31 2003-01-29 도쿄파츠고교 가부시키가이샤 Disc clamp device and disk driving apparatus having the disk clamp device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR950015356U (en) * 1993-11-20 1995-06-19 Turntable of mini disc player
KR970071634A (en) * 1996-04-16 1997-11-07 김광호 Disc Clamping Device for Disc Players
KR20030009111A (en) * 2001-05-31 2003-01-29 도쿄파츠고교 가부시키가이샤 Disc clamp device and disk driving apparatus having the disk clamp device

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