KR20020034606A - A stator assembly of spindle motor - Google Patents

A stator assembly of spindle motor Download PDF

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Publication number
KR20020034606A
KR20020034606A KR1020000065007A KR20000065007A KR20020034606A KR 20020034606 A KR20020034606 A KR 20020034606A KR 1020000065007 A KR1020000065007 A KR 1020000065007A KR 20000065007 A KR20000065007 A KR 20000065007A KR 20020034606 A KR20020034606 A KR 20020034606A
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KR
South Korea
Prior art keywords
bearing housing
base plate
spindle motor
hole
stator
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KR1020000065007A
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Korean (ko)
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KR100726399B1 (en
Inventor
안광석
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송재인
엘지이노텍 주식회사
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Priority to KR1020000065007A priority Critical patent/KR100726399B1/en
Publication of KR20020034606A publication Critical patent/KR20020034606A/en
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Publication of KR100726399B1 publication Critical patent/KR100726399B1/en

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    • 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
    • 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
    • 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
    • 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
    • H02K7/08—Structural association with bearings
    • H02K7/085—Structural association with 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
    • H02K2205/00—Specific aspects not provided for in the other groups of this subclass relating to casings, enclosures, supports
    • H02K2205/03—Machines characterised by thrust bearings

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

PURPOSE: A stator assembly of a spindle motor is provided to improve product reliability by avoiding leakage of oil contained in a metal bearing and reduce the numbers of assembling processes and components. CONSTITUTION: A stator assembly of a spindle motor comprises a base plate(10) including a through-hole(12), and a printed circuit board(30) for applying power to a coil(5a) of a stator(5). The printed circuit board(30) is attached on the base plate(10). A bearing housing(60) is coupled to the through-hole(12) of the base plate(10). A metal bearing(23) is fixed to the inner circumference of the bearing housing(60). A rotating shaft(50) is supported at the inner circumference of the metal bearing(23). A turn-table assembly(9) is pushed at the outer circumference of the top of the rotating shaft(50). A rotor(7) including a case(7a) and a magnet(7b) is coupled to the bottom of the turn-table assembly(9). A stator(5) including a core(5b) and the coil(5a) is pushed at the outer circumference of the center of the bearing housing(60).

Description

스핀들 모터의 스테이터 어셈블리 {A STATOR ASSEMBLY OF SPINDLE MOTOR}Stator assembly of spindle motor {A STATOR ASSEMBLY OF SPINDLE MOTOR}

본 발명은 스핀들 모터에 관한 것으로, 특히 스핀들 모터의 베이스플레이트와 베어링하우징의 구조를 개선하여 메탈베어링에 함유되어 있는 오일이 손실되는것을 방지하는 스핀들 모터의 스테이터 어셈블리에 관한 것이다.The present invention relates to a spindle motor, and more particularly, to a stator assembly of a spindle motor which improves the structure of the base plate and the bearing housing of the spindle motor to prevent the loss of oil contained in the metal bearing.

일반적으로 스핀들 모터(100)의 결합구조는 도 2에 도시된 바와 같이, 베이스플레이트(1)의 상면에 인쇄회로기판(3)이 고정 설치되며, 베이스플레이트(1) 및 인쇄회로기판(3)의 중앙부를 관통하여 베이스플레이트(1)의 관통공(1a)에 베어링하우징(20)이 고정된다.In general, the coupling structure of the spindle motor 100, as shown in Figure 2, the printed circuit board 3 is fixed to the upper surface of the base plate 1, the base plate 1 and the printed circuit board 3 The bearing housing 20 is fixed to the through hole 1a of the base plate 1 through the central portion of the base plate 1.

베어링하우징(20)의 설치구조를 살펴보면 베어링하우징(20)의 하부측 내주면에는 지지플레이트(27)와 지지플레이트(27)를 고정하기 위한 스토퍼(25)가 구비되고, 지지플레이트(27) 상측의 베어링하우징(20)의 내주면에는 메탈베어링(20)이 압입 고정된다. 베어링하우징(20)의 하단부측은 베이스플레이트(1) 및 스토퍼(25)에 스피닝 코킹(Spinning Caulking)되는데, 이로 인하여, 베어링하우징(20)이 베이스플레이트(1)의 관통공(1a)에 고정되고, 스토퍼(25)가 베어링하우징(20)에 고정된다.Looking at the installation structure of the bearing housing 20, the lower inner peripheral surface of the bearing housing 20 is provided with a stopper 25 for fixing the support plate 27 and the support plate 27, the upper side of the support plate 27 The metal bearing 20 is press-fitted to the inner circumferential surface of the bearing housing 20. The lower end side of the bearing housing 20 is spinning caulking to the base plate 1 and the stopper 25, whereby the bearing housing 20 is fixed to the through hole 1a of the base plate 1 , The stopper 25 is fixed to the bearing housing 20.

베어링하우징(20)의 중앙부측 외주면에는 코일(5a)과 코어(5b)로 이루어진 스테이터(5)가 압입되고, 코어(5b)는 베어링하우징(20) 외주면에 형성된 안착턱(21)에 안착된다. 메탈베어링(23)의 내주면에는 회전축(50)이 지지되고, 회전축(50)의 상부 외주면에는 디스크(도시생략)가 탑재되는 턴테이블조립체(9)가 압입된다. 턴테이블조립체(9)의 하면에는 마그네트(7b)와 케이스(7a)로 이루어진 로터(7)가 결합되어 회전축(50) 및 턴테이블조립체(9)와 함께 회전한다.A stator 5 composed of a coil 5a and a core 5b is press-fitted to the outer peripheral surface of the central portion of the bearing housing 20, and the core 5b is seated on a seating jaw 21 formed on the outer peripheral surface of the bearing housing 20. . A rotating shaft 50 is supported on the inner circumferential surface of the metal bearing 23, and a turntable assembly 9 on which a disk (not shown) is mounted is pressed into the upper outer circumferential surface of the rotating shaft 50. The rotor 7 consisting of a magnet 7b and a case 7a is coupled to the lower surface of the turntable assembly 9 to rotate together with the rotation shaft 50 and the turntable assembly 9.

이리하여 코일(5a)에 전원이 인가되면 코어(5b)와 마그네트(7b)사이의 전자기력에 의해 로터(7)가 회전되면서 회전축(50)을 회전시킨다. 이때, 회전축(50)이고속으로 회전되면 메탈베어링(23)에 함유되어있는 오일이 배출되어 유막을 형성하고, 이로 인하여 회전축(50)이 원할하게 회전된다.Thus, when power is applied to the coil 5a, the rotor 7 is rotated by the electromagnetic force between the core 5b and the magnet 7b to rotate the rotation shaft 50. At this time, when the rotating shaft 50 is rotated at high speed, the oil contained in the metal bearing 23 is discharged to form an oil film, thereby rotating the rotating shaft 50 smoothly.

그러나 상기와 같은 종래의 스핀들 모터는, 회전축(50)이 고속회전 하는 동안 회전축(50)의 스러스트 하중에 의해서 스토퍼(25)와 베어링하우징(20) 사이에 틈이 발생할 수 있다. 또한, 스피닝 코킹(Spinning Caulking)작업 자체의 불량으로 인하여 베어링하우징(20)과 스토퍼(25)사이에 틈이 발생할 수 있다.However, in the conventional spindle motor as described above, a gap may occur between the stopper 25 and the bearing housing 20 by the thrust load of the rotation shaft 50 while the rotation shaft 50 rotates at a high speed. In addition, a gap may occur between the bearing housing 20 and the stopper 25 due to a poor spinning caulking operation itself.

그러면, 메탈베어링(23)의 오일이 외부로 누출되어 메탈베어링(23)이 제 기능을 수행하지 못하게 된다. 이로 인하여, 스핀들 모터(100)에서는 소음이 과다하게 발생하게 되고 진동이 커지게 되어 제품의 수명이 단축되는 문제점이 있다. 또한, 지지 플레이트(27)를 고정하기 위한 스토퍼(25)와 같은 별도의 부품이 구비되어야 함으로 부품수가 증가하고, 조립공정이 복잡하여 원가가 상승하는 단점이 있다.Then, the oil of the metal bearing 23 leaks to the outside, and the metal bearing 23 may not function properly. For this reason, in the spindle motor 100 there is a problem that the noise is excessively generated and the vibration is increased to shorten the life of the product. In addition, since a separate part such as a stopper 25 for fixing the support plate 27 is to be provided, the number of parts increases and the assembly process is complicated, resulting in a cost increase.

본 발명은 상기와 같은 종래의 문제점을 해결하기 위하여 창출된 것으로서, 메탈베어링에 함유된 오일이 외부로 누출되지 않도록 하여 제품의 신뢰성을 향상시킬 수 있는 스핀들 모터를 제공함에 그 목적이 있다.The present invention has been made to solve the conventional problems as described above, an object of the present invention is to provide a spindle motor that can improve the reliability of the product by preventing the oil contained in the metal bearings to leak to the outside.

본 발명의 다른 목적은 부품수 및 조립공정을 줄여 원가를 절감 할 수 있는 스핀들 모터를 제공함에 있다.Another object of the present invention is to provide a spindle motor that can reduce the cost by reducing the number of parts and the assembly process.

도 1은 본 발명의 일 실시예에 따른 스핀들 모터를 개략적으로 보인 단면도.1 is a cross-sectional view schematically showing a spindle motor according to an embodiment of the present invention.

도 2는 일반적인 스핀들 모터를 개략적으로 보인 단면도.Figure 2 is a schematic cross-sectional view of a typical spindle motor.

< 도면의 주요 부분에 대한 부호의 설명 ><Description of Symbols for Main Parts of Drawings>

5a : 코일 5b : 코어5a: coil 5b: core

5 : 스테이터 7a : 케이스5: stator 7a: case

7b : 마그네트7 : 로터7b: magnet 7: rotor

9 : 턴테이블조립체10 : 베이스플레이트9: turntable assembly 10: base plate

11 : 결합돌기12 : 관통공11: engaging projection 12: through hole

23 : 메탈베어링27 : 지지플레이트23: metal bearing 27: support plate

30 : 인쇄회로기판50 : 회전축30: printed circuit board 50: rotating shaft

60 : 베어링하우징 100 : 스핀들 모터60: bearing housing 100: spindle motor

상기 목적을 달성하기 위한 본 발명은, 상면에 인쇄회로기판이 고정되고 중앙부에는 상측으로 돌출된 관 형태의 관통공을 가지는 베이스플레이트와, 상기 베이스플레이트의 관통공에 결합되며, 상면이 개방되고 하면은 밀폐된 베어링하우징과, 상기 베어링하우징의 내주면에 고정되어 회전축을 지지하는 메탈베어링과, 상기 베어링하우징의 외측면에 설치되며, 코어와 코일로 이루어진 스테이터를 구비한다.In order to achieve the above object, the present invention provides a base plate having a through hole in a tubular shape protruding upward from a printed circuit board fixed to an upper surface thereof, and coupled to a through hole of the base plate, and having an upper surface opened. Is a sealed bearing housing, a metal bearing fixed to an inner circumferential surface of the bearing housing to support a rotating shaft, and installed on an outer surface of the bearing housing, and having a stator including a core and a coil.

이하, 첨부한 도면을 참조하여 본 발명에 따른 스핀들 모터의 바람직한 실시예를 상세히 설명한다. 설명의 편의를 위하여 종래 기술과 동일한 구성요소는 동일부호를 사용한다.Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the spindle motor according to the present invention. For convenience of description, the same components as in the prior art have the same reference numerals.

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

도시된 바와 같이, 스핀들 모터(100)는 버링(Burring)가공에 의하여 형성되는 관통공(12)을 가지는 베이스플레이트(10)를 구비한다. 베이스플레이트(10)의 상면에는 후술할 스테이터(5)의 코일(5a)에 전원을 인가하는 인쇄회로기판(30)이 결합되고, 베이스플레이트(10)의 관통공(12)에는 베어링하우징(60)이 고정된다. 베어링하우징(60)의 내주면에는 메탈베어링(23)이 고정되고, 메탈베어링(23)의 내주면에는 회전축(50)이 지지된다.As shown, the spindle motor 100 has a base plate 10 having a through hole 12 formed by a burring process. The upper surface of the base plate 10 is coupled to the printed circuit board 30 for applying power to the coil 5a of the stator 5 to be described later, the bearing housing 60 in the through hole 12 of the base plate 10 ) Is fixed. The metal bearing 23 is fixed to the inner circumferential surface of the bearing housing 60, and the rotating shaft 50 is supported on the inner circumferential surface of the metal bearing 23.

회전축(50)의 상부 외주면에는 디스크(도시생략)가 탑재되는 턴테이블조립체(9)가 압입된다. 턴테이블조립체(9)의 하면에는 마그네트(7b)와 케이스(7a)로 이루어진 로터(7)가 결합되어 회전축(50) 및 턴테이블조립체(9)와 함께 회전한다. 베어링하우징(20)의 중앙부측 외주면에는 코일(5a)과 코어(5b)로 이루어진 스테이터(5)가 압입된다. 미설명부호 27은 지지플레이트로 베어링하우징(60)의 하면 내측에 구비되어 회전축(50)의 하단부를 지지한다.The turntable assembly 9 on which the disk (not shown) is mounted is press-fitted on the upper outer peripheral surface of the rotating shaft 50. The rotor 7 consisting of a magnet 7b and a case 7a is coupled to the lower surface of the turntable assembly 9 to rotate together with the rotation shaft 50 and the turntable assembly 9. On the outer peripheral surface of the center part side of the bearing housing 20, the stator 5 which consists of the coil 5a and the core 5b is press-fitted. Reference numeral 27 is provided on the inner side of the lower surface of the bearing housing 60 as a support plate to support the lower end of the rotation shaft (50).

본 실시예에 따른 베어링하우징(60)은 회전축의 회전시 메탈베어링(23)에서 배출되는 오일이 외부로 손실되지 않도록 마련된다. 이를 위하여, 베이스플레이트(10)의 관통공(12)의 내주면은 상기 베이스플레이트(10)의 상측으로 돌출된 관 형태로 마련된다. 그리고, 베어링하우징(60)은 상면이 개방되고 하면이 밀폐된 U형상으로 형성되어, 베어링하우징(60)의 하부측 외주면이 베이스플레이트(10)의 관통공(12)의 내주면을 따라 압입 고정된다. 그러면, 베이스플레이트(10)의 관통공(12)의 내주면과 베어링하우징(60)의 외주면의 접촉면적이 넓어지므로 안정되게 결합된다. 또한, 스테이터(5)는 관 형태의 관통공(12)의 상면(12a)에 지지된다.The bearing housing 60 according to the present embodiment is provided so that oil discharged from the metal bearing 23 is not lost to the outside when the rotating shaft is rotated. To this end, the inner circumferential surface of the through hole 12 of the base plate 10 is provided in the form of a tube protruding upward of the base plate 10. In addition, the bearing housing 60 is formed in a U shape in which the upper surface is opened and the lower surface is closed, and the lower outer peripheral surface of the bearing housing 60 is press-fitted and fixed along the inner peripheral surface of the through hole 12 of the base plate 10. . Then, since the contact area between the inner circumferential surface of the through hole 12 of the base plate 10 and the outer circumferential surface of the bearing housing 60 is widened, it is coupled stably. In addition, the stator 5 is supported by the upper surface 12a of the tubular through hole 12.

본 실시예에 따른 스핀들 모터(100)는 베이스플레이트(10)와 인쇄회로기판(30)을 견고함과 동시에 용이하게 결합할 수 있도록 마련된다. 이를 위하여, 베이스플레이트(10)의 상면에는 베이스플레이트(10)의 관통공(12)과 소정간격 이격되어 결합돌기(11)가 형성되고, 인쇄회로기판(30)에는 베이스플레이트(10)의 결합돌기(11)와 대응되도록 결합구멍(31)이 형성된다. 베이스플레이트(10)의 결합돌기(11)에 인쇄회로기판(30)의 결합구멍(31)을 고정후 리베팅하여 결합한다.Spindle motor 100 according to the present embodiment is provided so that the base plate 10 and the printed circuit board 30 can be firmly and easily coupled. To this end, a coupling protrusion 11 is formed on the top surface of the base plate 10 to be spaced apart from the through hole 12 of the base plate 10 by a predetermined interval, and the base plate 10 is coupled to the printed circuit board 30. Coupling holes 31 are formed to correspond to the projections 11. The coupling hole 31 of the printed circuit board 30 is fixed to the coupling protrusion 11 of the base plate 10 and then riveted.

상기와 같이 구성된 본 실시예에 따른 스핀들 모터(100)의 작용을 설명한다. 스핀들 모터(100)의 코일(5a)에 인쇄회로기판(30)으로부터 전원이 인가되면코어(5b)와 마그네트(7b)사이의 전자기력에 의해 로터(7)가 회전되면서 회전축(50)을 회전시킨다. 회전축(50)이 고속으로 회전되면 메탈베어링(23)에 함유되어있는 오일이 배출되어 유막을 형성한다. 이때, 메탈베어링(23)에서 배출된 오일은 베어링하우징(60)의 외부로 누출되지 않고, 베어링하우징(60)의 저면측에 고였다가 베어링하우징(60)의 내면을 타고 메탈베어링(23)으로 다시 공급된다.The operation of the spindle motor 100 according to the present embodiment configured as described above will be described. When power is applied to the coil 5a of the spindle motor 100 from the printed circuit board 30, the rotor 7 is rotated by the electromagnetic force between the core 5b and the magnet 7b to rotate the rotating shaft 50. . When the rotating shaft 50 is rotated at a high speed, the oil contained in the metal bearing 23 is discharged to form an oil film. At this time, the oil discharged from the metal bearing 23 does not leak to the outside of the bearing housing 60, but is accumulated on the bottom side of the bearing housing 60 and rides on the inner surface of the bearing housing 60 to the metal bearing 23. Supplied again.

이상에서 설명된 바와 같이, 본 발명에 따른 스핀들 모터는 베어링하우징의 하면이 밀폐되어 있으므로 메탈베어링에 함유된 오일이 베어링하우징의 내부에 보관된다. 이로인해, 메탈베어링은 항상 적절한 오일을 함유한 상태에서 회전축의 회전을 지지하므로 과다한 소음 및 진동 발생을 억제한다. 그러므로, 제품의 신뢰성이 향상된다.As described above, since the lower surface of the bearing housing is sealed in the spindle motor according to the present invention, the oil contained in the metal bearing is stored in the bearing housing. As a result, the metal bearings support the rotation of the rotating shaft in a state of always containing appropriate oil to suppress excessive noise and vibration. Therefore, the reliability of the product is improved.

또한, 베어링하우징과 베이스플레이트 및 스토퍼를 결합하는 스피닝 코킹작업이 필요 없고, 지지플레이트를 고정하는 스토퍼가 필요 없다. 그러므로, 부품 및 조립공정이 감소하여 원가가 절감된다.In addition, there is no need for a spinning caulking operation combining the bearing housing with the base plate and the stopper, and no stopper for fixing the support plate. Therefore, parts and assembly processes are reduced, resulting in cost reduction.

Claims (4)

상면에 인쇄회로기판이 고정되고 중앙부에는 상측으로 돌출된 관 형태의 관통공을 가지는 베이스플레이트와,A base plate having a printed circuit board fixed to an upper surface thereof and having a through-hole shaped like a tube protruding upward from a central portion thereof; 상기 베이스플레이트의 관통공에 결합되며, 상면이 개방되고 하면은 밀폐된 베어링하우징과,Is coupled to the through-hole of the base plate, the upper surface is open and the lower surface is sealed bearing housing, 상기 베어링하우징의 내주면에 고정되어 회전축을 지지하는 메탈베어링과,A metal bearing fixed to an inner circumferential surface of the bearing housing to support a rotating shaft; 상기 베어링하우징의 외측면에 설치되며, 코어와 코일로 이루어진 스테이터를 구비하는 스핀들 모터의 스테이터 어셈블리.Stator assembly of the spindle motor is installed on the outer surface of the bearing housing, having a stator consisting of a core and a coil. 제 1 항에 있어서,The method of claim 1, 상기 베어링하우징은 하단부가 상기 베이스플레이트의 관통공에 압입으로 결합된 스핀들 모터의 스테이터 어셈블리.The bearing housing is a stator assembly of the spindle motor having a lower end coupled to the through hole of the base plate by press-fitting. 제 1 항에 있어서,The method of claim 1, 상기 스테이터는 상기 관통공의 상면에 지지된 스핀들 모터의 스테이터 어셈블리.The stator is a stator assembly of the spindle motor supported on the upper surface of the through hole. 제 1 항에 있어서,The method of claim 1, 상기 베이스플레이트에는 결합돌기가 형성되고, 상기 인쇄회로기판에는 상기결합돌기가 삽입ㆍ결합된 결합구멍이 형성된 스핀들 모터의 스테이터 어셈블리.And a coupling protrusion formed in the base plate, and a coupling hole in which the coupling protrusion is inserted and coupled to the printed circuit board.
KR1020000065007A 2000-11-02 2000-11-02 A stator assembly of spindle motor KR100726399B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100982826B1 (en) * 2007-05-09 2010-09-16 니혼 덴산 가부시키가이샤 Motor and method for manufacturing the motor
KR20110110640A (en) * 2010-04-01 2011-10-07 엘지이노텍 주식회사 Motor assembly

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100999482B1 (en) 2008-08-19 2010-12-09 엘지이노텍 주식회사 Spindle motor
KR101101606B1 (en) 2010-07-16 2012-01-02 삼성전기주식회사 Motor and optical disc drive using the same

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KR19990050510A (en) * 1997-12-17 1999-07-05 이형도 Brushless dc motor
KR19990041596U (en) * 1998-05-22 1999-12-15 이형도 Spindle Support Structure for Spindle Motor
JP2000125505A (en) * 1998-10-09 2000-04-28 Sankyo Seiki Mfg Co Ltd Motor
KR20020006737A (en) * 2000-07-13 2002-01-26 이형도 Spindle motor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100982826B1 (en) * 2007-05-09 2010-09-16 니혼 덴산 가부시키가이샤 Motor and method for manufacturing the motor
KR20110110640A (en) * 2010-04-01 2011-10-07 엘지이노텍 주식회사 Motor assembly

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