KR20070092004A - Slim type spindle motor - Google Patents

Slim type spindle motor Download PDF

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Publication number
KR20070092004A
KR20070092004A KR1020060021868A KR20060021868A KR20070092004A KR 20070092004 A KR20070092004 A KR 20070092004A KR 1020060021868 A KR1020060021868 A KR 1020060021868A KR 20060021868 A KR20060021868 A KR 20060021868A KR 20070092004 A KR20070092004 A KR 20070092004A
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KR
South Korea
Prior art keywords
rotor yoke
turntable
spindle motor
rotor
turn
Prior art date
Application number
KR1020060021868A
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Korean (ko)
Inventor
송충현
Original Assignee
엘지이노텍 주식회사
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Priority to KR1020060021868A priority Critical patent/KR20070092004A/en
Publication of KR20070092004A publication Critical patent/KR20070092004A/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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2786—Outer rotors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/22—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating around the armatures, e.g. flywheel magnetos
    • 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

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Rotational Drive Of Disk (AREA)

Abstract

A slim type spindle motor is provided to simplify a coupling process for a turn-table and a rotor yoke by aligning a center of the turn-table with a center of the rotor yoke. A slim type spindle motor includes a rotation shaft(120), a turn-table(150), a rotor(160), and a stator(130). A disk is mounted on the turn-table. A rotor yoke(161) is coupled with the turn-table. A magnet is coupled with the rotor yoke. The stator is fixed outside the rotation shaft. A pressure protrusion and a pressure groove are formed on the turn-table and the rotor yoke, respectively, so that the pressure protrusion is aligned with the pressure groove. The heights of the pressure protrusion and the pressure groove are smaller than half of the thicknesses of the turn-table and the rotor yoke, respectively.

Description

슬림형 스핀들 모터 {SLIM TYPE SPINDLE MOTOR}Slim Spindle Motor {SLIM TYPE SPINDLE MOTOR}

도 1은 종래의 슬림형 스핀들 모터의 턴테이블과 로터요크를 보인 도.1 is a view showing a turntable and a rotor yoke of a conventional slim spindle motor.

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

도 3a는 도 2에 도시된 턴테이블과 로터요크를 분리하여 보인 도.FIG. 3a is a view illustrating the turntable and the rotor yoke shown in FIG. 2 separately;

도 3b는 도 3a의 결합 평면도.3B is a combined plan view of FIG. 3A.

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

110 : 베어링하우징 120 : 회전자110: bearing housing 120: rotor

130 : 고정자 150 : 턴테이블130: stator 150: turntable

155 : 압입돌기 160 : 회전자155: indentation protrusion 160: the rotor

161 : 로터요크 161a : 압입홈161: rotor yoke 161a: indentation groove

본 발명은 스핀들 모터에 관한 것으로, 더 상세하게는 턴테이블과 로터요크의 결합구조에 관한 것이다.The present invention relates to a spindle motor, and more particularly to a coupling structure of the turntable and the rotor yoke.

스핀들 모터는 ODD(Opticla Disk Drive)의 내부에 설치되어, 직선운동하는 광 픽업이 디스크에 기록된 데이타를 읽을 수 있도록 디스크를 회전시키는 기능을 한다.The spindle motor is installed in the ODD (Opticla Disk Drive) to rotate the disk so that the linear pickup can read the data recorded on the disk.

스핀들 모터 중, 노트북 등에 사용되는 스핀들 모터는 슬림형이 사용되는데, 종래의 슬림형 스핀들 모터의 턴테이블과 로터요크의 결합구조를 도 1을 참조하여 설명한다.Among the spindle motors, a slim type spindle motor used in a notebook or the like is used. A coupling structure of a turntable and a rotor yoke of a conventional slim spindle motor will be described with reference to FIG. 1.

도시된 바와 같이, 종래의 스핀들 모터는 디스크가 탑재되는 턴테이블(11)과 회전자인 로터요크(15)가 스폿 용접에 의하여 결합된다.As shown, the conventional spindle motor is coupled to the turntable 11 on which the disk is mounted and the rotor yoke 15, which is a rotor, by spot welding.

이로 인해, 턴테이블(11)과 로터요크(15)를 스폿 용접할 때, 턴테이블(11)과 로터요크(15)의 용접 위치가 어긋나서 턴테이블(11)과 로터요크(15)의 동심이 어긋나는 문제점이 있다.For this reason, when spot welding the turntable 11 and the rotor yoke 15, the welding position of the turntable 11 and the rotor yoke 15 is shifted, and the concentricity of the turntable 11 and the rotor yoke 15 is shifted. There is this.

또한, 턴테이블(11)과 로터요크(15)를 용접으로 결합하기 위하여 턴테이블(11)과 로터요크(15)의 결합 위치를 정확하게 조절하여야 하므로 불편한 단점이 있다.In addition, in order to jointly turn the turntable 11 and the rotor yoke 15 by welding, the coupling position of the turntable 11 and the rotor yoke 15 must be precisely adjusted, which is inconvenient.

본 발명은 상기와 같은 종래 기술의 문제점을 해결하기 위하여 안출된 것으로, 본 발명의 목적은 상호 결합되는 턴테이블과 로터요크의 동심도를 향상시킬 수 있을 뿐만 아니라 상호 간편하게 조립할 수 있는 슬림형 스핀들 모터를 제공함에 있다.The present invention has been made to solve the problems of the prior art as described above, an object of the present invention to improve the concentricity of the turntable and rotor yoke coupled to each other, as well as to provide a slim spindle motor that can be easily assembled with each other. have.

상기 목적을 달성하기 위한 본 발명에 따른 슬림형 스핀들 모터는, 회전축, 상기 회전축에 고정되며 디스크가 탑재되어 지지되는 턴테이블, 상기 턴테이블에 결합되는 로터요크와 상기 로터요크에 결합된 마그네트를 가지는 회전자, 상기 회전축의 외측에 고정되며 상기 회전자와의 작용에 의하여 상기 회전자를 회전시키는 고정자를 구비하는 슬림형 스핀들 모터에 있어서,A slim spindle motor according to the present invention for achieving the above object is a rotor having a rotating shaft, a turntable fixed to the rotating shaft and supported by a disk, a rotor yoke coupled to the turntable and a magnet coupled to the rotor yoke, In the slim spindle motor is fixed to the outer side of the rotating shaft having a stator for rotating the rotor by the action of the rotor,

상기 턴테이블 및 상기 로터요크에는 상호 대응되게 형성되어 압입 결합되는 압입돌기와 압입홈이 각각 형성된다.The turntable and the rotor yoke are formed to correspond to each other and are formed with a press-fitting projection and a press-fitting groove, respectively.

이하, 첨부한 도면을 참조하여 본 발명의 일 실시예에 따른 슬림형 스핀들 모터를 상세히 설명한다.Hereinafter, a slim 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 슬림형 스핀들 모터의 구성을 보인 단면도이다.Figure 2 is a cross-sectional view showing the configuration of a slim spindle motor according to an embodiment of the present invention.

도시된 바와 같이, 본 실시예에 따른 슬림형 스핀들 모터는 베이스(200)에 기립되어 설치된 베어링하우징(110)을 가진다. 베어링하우징(110)의 내부에는 베어링(115)이 압입되고, 베어링(115)에는 회전축(120)의 하부측이 지지되어 회전가능하게 설치된다.As shown, the slim spindle motor according to the present embodiment has a bearing housing 110 installed standing on the base 200. The bearing 115 is press-fitted into the bearing housing 110, and the lower side of the rotating shaft 120 is supported by the bearing 115 to be rotatably installed.

베어링하우징(110)의 외주면에는 코어(131)와 코어(131)에 권선된 코일(135)을 가지는 고정자(130)가 고정되고, 베어링하우징(110)의 상측으로 노출된 회전축(120)의 외주면에는 부쉬(Bush)(140)가 결합된다.A stator 130 having a core 131 and a coil 135 wound around the core 131 is fixed to an outer circumferential surface of the bearing housing 110, and an outer circumferential surface of the rotating shaft 120 exposed to the upper side of the bearing housing 110. Bush (140) is coupled to.

부쉬(140)의 외주면에는 디스크(50)가 탑재되는 턴테이블(150)이 결합되고, 턴테이블(150)의 저면에는 로터요크(161)와 마그네트(165)를 가지는 회전자(160)가 결합된다. 로터요크(161)는 하부 및 상부 중앙부측이 개방된 원통형상으로 마련되 어, 상면은 턴테이블(150)의 저면에 결합되고 측면은 고정자(130)를 감싼다. 마그네트(165)는 로터요크(161)의 측면 내주면에 고정된다.The turntable 150 on which the disk 50 is mounted is coupled to the outer circumferential surface of the bush 140, and the rotor 160 having the rotor yoke 161 and the magnet 165 is coupled to the bottom of the turntable 150. The rotor yoke 161 is provided in a cylindrical shape with the lower and upper central portions open, the upper surface is coupled to the bottom of the turntable 150 and the side surrounds the stator 130. The magnet 165 is fixed to the side inner peripheral surface of the rotor yoke 161.

그리하여, 코일(135)에 전류가 인가되면, 코일(135)에서 발생하는 전기장과 마그네트(165)에서 발생하는 자기장과의 작용에 의하여 회전자(160)가 회전하고, 이로인해 턴테이블(150), 부쉬(140) 및 회전축(120)이 회전하는 것이다.Thus, when a current is applied to the coil 135, the rotor 160 is rotated by the action of the electric field generated in the coil 135 and the magnetic field generated in the magnet 165, thereby causing the turntable 150, Bush 140 and the rotating shaft 120 is to rotate.

부쉬(140)에는 턴테이블(150)의 상면에 탑재된 디스크(50)의 중심이 회전축(120)의 중심과 일치하도록 디스크(50)를 탄성 지지하는 클램프(170)가 설치된다.The bush 140 is provided with a clamp 170 that elastically supports the disk 50 so that the center of the disk 50 mounted on the upper surface of the turntable 150 coincides with the center of the rotation shaft 120.

미설명 부호 180은 메인 PCB(Printed Circuit Board)이다.Reference numeral 180 is a main PCB (Printed Circuit Board).

본 실시예에 따른 스핀들 모터는 턴테이블(150)과 로터요크(161)를 상호 정해진 위치에 정확하게 결합할 수 있음과 동시에 간편하게 결합할 수 있도록 마련되는데, 이를 도 3a 및 도 3b를 참조하여 설명한다.The spindle motor according to the present embodiment is provided so that the turntable 150 and the rotor yoke 161 can be precisely coupled to each other at a predetermined position and can be easily coupled, which will be described with reference to FIGS. 3A and 3B.

도 3a는 도 2에 도시된 턴테이블과 로터요크를 분리하여 보인 도이고, 도 3b는 도 3a의 결합 평면도이다.FIG. 3A is a view illustrating the turntable and the rotor yoke separately illustrated in FIG. 2, and FIG. 3B is a plan view of the combination of FIG. 3A.

도시된 바와 같이, 턴테이블(150)의 상면 테두리부측 및 로터요크(161)의 상면 테두리부측에는 상호 대응되게 형성되어 상호 압입 결합되는 압입돌기(155) 및 압입홈(161a)이 각각 복수개 형성된다. 턴테이블(150)의 압입돌기(155)와 로터요크(161)의 압입홈(161a)을 상호 대향되게 위치시킨 상태에서, 턴테이블(150)과 로터요크(161)를 상호 압착시키면, 턴테이블(150)과 로터요크(161)가 결합되므로 간편하다.As shown, a plurality of indentation protrusions 155 and indentation grooves 161a are formed on the upper edge portion of the turntable 150 and the upper edge portion of the rotor yoke 161 so as to correspond to each other. When the turntable 150 and the rotor yoke 161 are pressed against each other in a state where the indentation protrusion 155 of the turntable 150 and the indentation groove 161a of the rotor yoke 161 are opposed to each other, the turntable 150 is pressed. And rotor yoke 161 is simple because it is combined.

압입돌기(155) 및 압입홈(161a)은 등간격으로 마련되는 것이 바람직하고, 원 형, 타원형 및 각형 등 다양한 형태로 형성될 수 있다. 그리고, 턴테이블(150)과 로터요크(161)의 적절한 결합강도 및 강성을 위하여, 압입돌기(155) 및 압입홈(161a)의 높이는 각각 턴테이블(150) 및 로터요크(161)의 두께의 1/2 이하인 것이 바람직하다.The indentation protrusion 155 and the indentation groove 161a are preferably provided at equal intervals, and may be formed in various shapes such as circular, elliptical, and square. In addition, for proper coupling strength and rigidity of the turntable 150 and the rotor yoke 161, the heights of the indentation protrusion 155 and the indentation groove 161a are 1 / the thickness of the turntable 150 and the rotor yoke 161, respectively. It is preferable that it is two or less.

이상에서 설명한 바와 같이, 본 발명에 따른 슬림형 스핀들 모터는 상호 대응되게 형성된 턴테이블의 압입돌기를 로터요크의 압입홈에 압입하면, 턴테이블과 로터요크가 상호 결합된다. 그러므로, 턴테이블의 중심과 로터요크의 중심은 항상 정확하게 일치된다. 그리고, 턴테이블과 로터요크의 결합공정이 간편하다.As described above, in the slim spindle motor according to the present invention, when the indentation protrusions of the turntables formed to correspond to each other are pressed into the indentation grooves of the rotor yoke, the turntable and the rotor yoke are coupled to each other. Therefore, the center of the turntable and the center of the rotor yoke always match exactly. In addition, the joining process of the turntable and the rotor yoke is easy.

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.In the above, the present invention has been described in accordance with one embodiment of the present invention, but those skilled in the art to which the present invention pertains have been changed and modified without departing from the spirit of the present invention. Of course.

Claims (2)

회전축, 상기 회전축에 고정되며 디스크가 탑재되어 지지되는 턴테이블, 상기 턴테이블에 결합되는 로터요크와 상기 로터요크에 결합된 마그네트를 가지는 회전자, 상기 회전축의 외측에 고정되며 상기 회전자와의 작용에 의하여 상기 회전자를 회전시키는 고정자를 구비하는 슬림형 스핀들 모터에 있어서,A rotating shaft, a turntable fixed to the rotating shaft and supported by a disk mounted thereon, a rotor having a rotor yoke coupled to the turntable and a magnet coupled to the rotor yoke, fixed to an outer side of the rotating shaft and acting by the rotor In the slim spindle motor having a stator for rotating the rotor, 상기 턴테이블 및 상기 로터요크에는 상호 대응되게 형성되어 압입 결합되는 압입돌기와 압입홈이 각각 형성된 슬림형 스핀들 모터.Slim spindle motors are formed in the turntable and the rotor yoke corresponding to each other is formed with a pressing projection and a pressing groove which is press-fitted. 제 1 항에 있어서,The method of claim 1, 상기 압입돌기 및 상기 압입홈의 높이는 각각 상기 턴테이블 및 상기 로터요크의 두께의 1/2 이하인 것을 특징으로 하는 슬림형 스핀들 모터.The height of the press-in projection and the press-in groove is a slim spindle motor, characterized in that less than 1/2 of the thickness of the turntable and the rotor yoke, respectively.
KR1020060021868A 2006-03-08 2006-03-08 Slim type spindle motor KR20070092004A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100976953B1 (en) * 2010-06-28 2010-08-18 엘지이노텍 주식회사 spindle motor
KR100981230B1 (en) * 2010-06-28 2010-09-10 엘지이노텍 주식회사 Spindle motor
KR100986686B1 (en) * 2007-12-04 2010-10-11 엘지이노텍 주식회사 Spindle motor
US7915774B2 (en) 2007-09-17 2011-03-29 Lg Innotek Co., Ltd. Spindle motor
US8115357B2 (en) 2009-08-06 2012-02-14 Samsung Electro-Mechanics Co., Ltd. Motor

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7915774B2 (en) 2007-09-17 2011-03-29 Lg Innotek Co., Ltd. Spindle motor
US8076806B2 (en) 2007-09-17 2011-12-13 Lg Innotek Co., Ltd. Spindle motor having bushing
US8089186B2 (en) 2007-09-17 2012-01-03 Lg Innotek Co., Ltd. Spindle motor having bushing
KR100986686B1 (en) * 2007-12-04 2010-10-11 엘지이노텍 주식회사 Spindle motor
US7816831B2 (en) 2007-12-04 2010-10-19 Lg Innotek Co., Ltd. Spindle motor
US8115357B2 (en) 2009-08-06 2012-02-14 Samsung Electro-Mechanics Co., Ltd. Motor
KR100976953B1 (en) * 2010-06-28 2010-08-18 엘지이노텍 주식회사 spindle motor
KR100981230B1 (en) * 2010-06-28 2010-09-10 엘지이노텍 주식회사 Spindle motor

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