KR20080006939A - Stepping motor - Google Patents

Stepping motor Download PDF

Info

Publication number
KR20080006939A
KR20080006939A KR1020060066308A KR20060066308A KR20080006939A KR 20080006939 A KR20080006939 A KR 20080006939A KR 1020060066308 A KR1020060066308 A KR 1020060066308A KR 20060066308 A KR20060066308 A KR 20060066308A KR 20080006939 A KR20080006939 A KR 20080006939A
Authority
KR
South Korea
Prior art keywords
housing
lead screw
stepping motor
stator
bracket
Prior art date
Application number
KR1020060066308A
Other languages
Korean (ko)
Other versions
KR100901421B1 (en
Inventor
박재범
Original Assignee
엘지이노텍 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 엘지이노텍 주식회사 filed Critical 엘지이노텍 주식회사
Priority to KR1020060066308A priority Critical patent/KR100901421B1/en
Publication of KR20080006939A publication Critical patent/KR20080006939A/en
Application granted granted Critical
Publication of KR100901421B1 publication Critical patent/KR100901421B1/en

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K37/00—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors
    • H02K37/10—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of permanent magnet type
    • H02K37/12—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of permanent magnet type with stationary armatures and rotating magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/14—Casings; Enclosures; Supports
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K37/00—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors
    • H02K37/10—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of permanent magnet type
    • H02K37/12—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of permanent magnet type with stationary armatures and rotating magnets
    • H02K37/14—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of permanent magnet type with stationary armatures and rotating magnets with magnets rotating within the armatures
    • 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
    • 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
    • H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
    • 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
    • H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
    • H02K5/207—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium with openings in the casing specially adapted for ambient air

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Moving Of Heads (AREA)

Abstract

A stepping motor is provided to accurately control the motor by generating a uniform torque by equalizing an inductance of a housing irrespective of a position on the housing. A stepping motor includes a bracket(110), a metal housing(120), a stator(170), a lead screw, and a rotor(165). The metal housing is coupled with the bracket and includes first and second openings which are formed on one and the other side of an outer surface thereof. The stator is implemented inside the housing. One and the other end of the lead screw are supported by the bracket and the support members, respectively, so that the lead screw is rotated in forward and reverse directions. The lead screw reciprocates an optical pickup linearly. The rotor is fixed on the lead screw and rotated by an interaction between the rotor and the stator.

Description

스테핑 모터 {STEPPING MOTOR}Stepping Motor {STEPPING MOTOR}

도 1은 본 발명의 일 실시예에 따른 스테핑 모터의 단면도.1 is a cross-sectional view of a stepping motor according to an embodiment of the present invention.

도 2는 도 1에 도시된 하우징과 고정자의 분해 사시도.2 is an exploded perspective view of the housing and the stator shown in FIG. 1;

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

110 : 브라켓 120 : 하우징110: bracket 120: housing

130 : 스러스트홀더 140 : 탄성부재130: thrust holder 140: elastic member

150 : 피봇베어링 160 : 리드스크류150: pivot bearing 160: lead screw

165 : 회전자 170 : 고정자165: rotor 170: stator

본 발명은 스테핑 모터에 관한 것이다.The present invention relates to a stepping motor.

스테핑 모터는 ODD(Opticla Disk Drive)의 내부에 설치되어 회전하는 디스크로부터 광 픽업이 데이타를 읽을 수 있도록 광 픽업을 직선왕복운동시키는 기능을 한다.The stepping motor is installed inside the optical disk drive (ODD) and functions to linearly reciprocate the optical pickup so that the optical pickup can read data from the rotating disk.

일반적으로, 스테핑 모터는 금속제의 하우징, 상기 하우징에 결합된 브라켓, 상기 하우징의 내부에 고정된 고정자, 일단부측은 상기 하우징의 타측면측에 지지 되고 타단부측은 상기 브라켓에 지지되어 회전가능하게 설치된 리드스크류, 상기 리드스크류에 고정되어 상기 고정자와의 작용에 의하여 회전하는 회전자를 가진다. 그리고, 상기 리드스크류에 광픽업이 설치되어 상기 리드스크류가 회전함에 따라 직선왕복운동한다.In general, the stepping motor is a metal housing, a bracket coupled to the housing, a stator fixed to the inside of the housing, one end side is supported on the other side of the housing and the other end is rotatably supported by the bracket A lead screw has a rotor that is fixed to the lead screw and rotates by the action of the stator. An optical pick-up is installed in the lead screw to linearly reciprocate as the lead screw rotates.

상기 고정자는 보빈, 상기 보빈의 외주면에 권선된 코일, 상기 보빈의 내주면에 결합된 투스요크를 가진다. 상기 보빈에는 외부의 전원을 상기 코일로 전달하기 위한 단자부가 마련되는데, 상기 단자부는 상기 하우징의 외면 일측에 형성된 개방부를 관통하여 외부로 노출된다.The stator has a bobbin, a coil wound on an outer circumferential surface of the bobbin, and a tooth yoke coupled to an inner circumferential surface of the bobbin. The bobbin is provided with a terminal portion for transmitting external power to the coil, the terminal portion is exposed to the outside through the opening formed on one side of the outer surface of the housing.

그러나, 상기와 같은 종래의 스테핑 모터는 상기 하우징의 외면 일측에만 상기 개방부가 형성되므로, 상기 개방부가 형성된 상기 하우징 부위와 상기 개방부가 형성되지 않은 상기 하우징 부위의 인덕턴스가 상이하다. 이로인해, 상기 하우징의 부위별로 발생하는 토크가 불균일하여 모터를 정밀하게 제어하기 어려운 단점이 있다.However, in the conventional stepping motor as described above, since the opening is formed only on one side of the outer surface of the housing, the inductance of the housing portion in which the opening is formed and the housing portion in which the opening is not formed are different. Due to this, there is a disadvantage that it is difficult to precisely control the motor due to uneven torque generated for each part of the housing.

본 발명은 상기와 같은 종래 기술의 문제점을 해결하기 위하여 안출된 것으로, 본 발명의 목적은 토크가 균일하게 발생되도록 구성하여 정밀한 제어를 할 수 있는 스테핑 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 is to provide a stepping motor capable of precise control by configuring the torque is generated uniformly.

상기 목적을 달성하기 위한 본 발명에 따른 스테핑 모터는, 브라켓; 상기 브라켓에 결합되며 외면 일측 및 타측에는 제 1 및 제 2 개방부가 형성된 금속제의 하우징; 상기 하우징의 내부에 설치된 고정자; 일단부측 및 타단부측이 상기 브라켓 및 상기 하우징에 각각 제공된 지지수단에 각각 지지되어 정역회전가능하게 설치되며 광 픽업을 직선왕복운동시키는 리드스크류; 상기 리드스크류에 고정되며 상기 고정자와 작용하여 회전하는 회전자를 포함한다.Stepping motor according to the present invention for achieving the above object, the bracket; A metal housing coupled to the bracket and having first and second openings formed on one side and the other side of the outer surface thereof; A stator installed inside the housing; A lead screw whose one end side and the other end side are respectively supported by the supporting means provided in the bracket and the housing so as to be rotated forward and backward and which linearly reciprocate the optical pickup; And a rotor fixed to the lead screw and rotating in action with the stator.

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

도 1은 본 발명의 일 실시예에 따른 스테핑 모터의 단면도이고, 도 2는 도 1에 도시된 하우징과 고정자의 분해 사시도이다.1 is a cross-sectional view of a stepping motor according to an embodiment of the present invention, Figure 2 is an exploded perspective view of the housing and the stator shown in FIG.

도시된 바와 같이, 받침판(111)과 제 1 및 제 2 측판(113,115)을 가지는 브라켓(110)이 마련되고, 브라켓(110)에는 금속제의 하우징(120)이 결합된다.As shown, a bracket 110 having a base plate 111 and first and second side plates 113 and 115 is provided, and a metal housing 120 is coupled to the bracket 110.

하우징(120)은 일측면은 개방되고 타측면에는 돌출관(121)이 형성된 원통형으로 마련되어, 개방된 일측면이 제 1 측판(113)에 결합된다.The housing 120 is provided with a cylindrical shape in which one side is open and a protruding tube 121 is formed at the other side, and the open one side is coupled to the first side plate 113.

하우징(120)의 돌출관(121)에는 스러스트홀더(130) 및 스러스트홀더(130)를 브라켓(110)측으로 탄성지지하는 탄성부재(140)가 마련되고, 제 2 측판(115)에는 피봇베어링(150)이 설치된다. 탄성부재(140)는 후술할 리드스크류(160)가 부하측 및 반부하측의 길이방향으로 유동하는 엔드 플레이(End-Play)를 허용한다.The thrust holder 130 and the elastic member 140 for elastically supporting the thrust holder 130 to the bracket 110 side are provided in the protruding tube 121 of the housing 120, and the second side plate 115 has a pivot bearing ( 150) is installed. The elastic member 140 allows an end play where the lead screw 160 to be described later flows in the longitudinal direction of the load side and the half load side.

스러스트홀더(130) 및 피봇베어링(150)에는 리드스크류(160)의 일단부 및 타단부가 각각 지지되어 회전가능하게 설치되고, 하우징(120)의 내부에 위치되는 리드스크류(160)의 일단부측 외주면에는 회전자(165)인 마그네트가 고정된다. 즉, 스러스트홀더(130) 및 피봇베어링(150)은 리드스크류(160)의 일단부 및 타단부를 지 지하는 지지수단이다.One end and the other end of the lead screw 160 are rotatably installed on the thrust holder 130 and the pivot bearing 150, respectively, and have one end side of the lead screw 160 positioned inside the housing 120. The magnet rotator 165 is fixed to the outer circumferential surface. That is, the thrust holder 130 and the pivot bearing 150 are supporting means for supporting one end and the other end of the lead screw 160.

하우징(120)의 내부에는 회전자(165)를 감싸는 형태로 고정자(170)가 설치된다. 고정자(170)는 제 1 및 제 2 고정자(171,175)를 가지는데, 제 1 및 제 2 고정자(171,175)는 제 1 및 제 2 보빈(172,176), 제 1 및 제 2 보빈(172,176)의 외주면에 각각 권선된 제 1 및 제 2 코일(173,177), 제 1 및 제 2 보빈(172,176)의 내주면에 각각 삽입 결합된 제 1 및 제 2 투스요크(Tooth Yoke)(174,178)를 각각 가진다.The stator 170 is installed inside the housing 120 to surround the rotor 165. The stator 170 has first and second stators 171 and 175, the first and second stators 171 and 175 on the outer circumferential surfaces of the first and second bobbins 172 and 176 and the first and second bobbins 172 and 176. Each of the first and second coils 173 and 177 and the first and second tooth yokes 174 and 178 which are respectively inserted into and coupled to the inner circumferential surfaces of the first and second bobbins 172 and 176, respectively.

그리하여, 제 1 및 제 2 코일(173,177)에 전류가 공급/차단됨에 따라 제 1 및 제 2 코일(173,177)에서 발생하는 전기장과 회전자(165)에서 발생되는 자기장의 작용에 의하여 회전자(165)가 정역회전을 하게 되고, 이로인해 리드스크류(160)가 정역회전을 하면서 광픽업(미도시)을 직선왕복운동시킨다.Thus, the rotor 165 is caused by the action of the electric field generated in the first and second coils 173 and 177 and the magnetic field generated in the rotor 165 as the current is supplied / blocked to the first and second coils 173 and 177. ) And the forward and reverse rotation, thereby causing the lead screw 160 to perform a forward and backward rotation of the optical pickup (not shown).

제 1 및 제 2 보빈(172,176)에는 제 1 및 제 2 코일(173,177)이 각각 접속된는 제 1 및 제 2 단자부(172a,176a)가 돌출 형성된다. 제 1 및 제 2 단자부(172a,176a)에는 외부의 전원측이 각각 접속되고, 제 1 및 제 2 단자부(172a,176a)를 통하여 외부의 전원이 제 1 및 제 2 코일(173,177)로 공급된다. 그리고, 하우징(120)의 외면 일측에는 제 1 및 제 2 단자부(172a,176a)가 관통하는 제 1 개방부(123)가 형성된다.First and second terminal portions 172a and 176a, to which the first and second coils 173 and 177 are connected, protrude to the first and second bobbins 172 and 176, respectively. External power sources are connected to the first and second terminal portions 172a and 176a, respectively, and external power is supplied to the first and second coils 173 and 177 through the first and second terminal portions 172a and 176a. In addition, a first opening 123 through which the first and second terminal parts 172a and 176a pass is formed at one side of the outer surface of the housing 120.

하우징(120)은 금속제이므로, 하우징(120)이 균일하게 형성되지 않으면, 하우징(120)의 부위에 따라 인덕턴스가 상이하게 된다. 즉, 하우징(120)에 제 1 개방부(123)만 형성된다면, 제 1 개방부(123)측의 하우징(120) 부위 및 제 1 개방 부(123) 타측의 하우징(120) 부위에서 발생되는 인덕턴스가 상이하여, 토크가 불균일하게 발생한다.Since the housing 120 is made of metal, if the housing 120 is not formed uniformly, the inductance is different depending on the portion of the housing 120. That is, if only the first opening 123 is formed in the housing 120, the housing 120 is formed at the portion of the housing 120 at the side of the first opening 123 and at the portion of the housing 120 at the other side of the first opening 123. Inductances are different, and torque is generated unevenly.

본 실시예에 따른 스테핑 모터에는 균일한 토크의 발생을 위하여 하우징(120)의 외면 타측에 제 2 개방부(125)가 형성된다. 이때, 제 1 개방부(123)와 제 2 개방부(125)는 하우징(120)의 중심을 기준으로 점대칭 형태로 형성되는 것이 바람직하다. 그러면, 제 1 고정자(171) 외측의 하우징(120)의 부위 및 제 2 고정자(175) 외측의 하우징(120)의 부위는 동일한 조건이 되므로, 동일한 인덕턴스 및 균일한 토크가 발생한다.In the stepping motor according to the present embodiment, the second opening 125 is formed on the other side of the outer surface of the housing 120 to generate a uniform torque. In this case, the first opening portion 123 and the second opening portion 125 are preferably formed in a point symmetrical shape with respect to the center of the housing 120. Then, the portion of the housing 120 outside the first stator 171 and the portion of the housing 120 outside the second stator 175 are subject to the same conditions, so that the same inductance and uniform torque are generated.

그리고, 제 2 개방부(125)로 인하여 하우징(120)의 내부이 열이 신속하게 방출되므로, 열화도 방지된다.In addition, since the heat is rapidly released from the inside of the housing 120 due to the second opening 125, deterioration is also prevented.

제 1 개방부(123)와 제 2 개방부(125)는 하우징(120)의 횡단면을 기준으로 비대칭 형태로 형성될 수도 있다.The first opening 123 and the second opening 125 may be formed in an asymmetrical shape with respect to the cross section of the housing 120.

미설명 부호 135, 155는 볼이고, 120a는 커버이다.Reference numerals 135 and 155 are balls, and 120a is a cover.

이상에서 설명하듯이, 본 발명에 따른 스테핑 모터는 고정자가 설치된 하우징의 외면 일측 및 타측에 제 1 및 제 2 개방부가 대칭되게 형성된다. 그러므로, 고정자가 설치된 하우징의 부위가 균일하므로, 하우징의 부위에 관계없이 인덕턴스가 동일하고 이로인해 동일한 토크가 발생된다. 그러므로, 모터를 정밀하게 제어할 수 있다.As described above, in the stepping motor according to the present invention, the first and second openings are symmetrically formed on one side and the other side of the outer surface of the housing in which the stator is installed. Therefore, since the part of the housing in which the stator is provided is uniform, the inductance is the same regardless of the part of the housing, thereby generating the same torque. Therefore, the motor can be precisely controlled.

또한, 하우징에 형성된 제 1 및 제 2 개방부가 방열공의 기능을 하므로, 하 우징 내부이 열이 신속하게 방열된다. 이로인해 하우징 내부의 부품이 열화되는 것이 방지된다.In addition, since the first and second openings formed in the housing function as heat radiating holes, heat is quickly radiated inside the housing. This prevents deterioration of components inside the housing.

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 (3)

브라켓;Brackets; 상기 브라켓에 결합되며 외면 일측 및 타측에는 제 1 및 제 2 개방부가 형성된 금속제의 하우징;A metal housing coupled to the bracket and having first and second openings formed on one side and the other side of the outer surface thereof; 상기 하우징의 내부에 설치된 고정자;A stator installed inside the housing; 일단부측 및 타단부측이 상기 브라켓 및 상기 하우징에 각각 제공된 지지수단에 각각 지지되어 정역회전가능하게 설치되며 광 픽업을 직선왕복운동시키는 리드스크류;A lead screw whose one end side and the other end side are respectively supported by the supporting means provided in the bracket and the housing so as to be rotated forward and backward and which linearly reciprocate the optical pickup; 상기 리드스크류에 고정되며 상기 고정자와 작용하여 회전하는 회전자를 포함하는 스테핑 모터.And a rotor fixed to the lead screw and rotating in action with the stator. 제 1 항에 있어서,The method of claim 1, 상기 개방부는 상기 하우징의 중심을 기준으로 점대칭 형태로 형성된 것을 특징으로 하는 스테핑 모터.Stepping motor, characterized in that the opening is formed in a point-symmetrical form with respect to the center of the housing. 제 1 항에 있어서,The method of claim 1, 상기 개방부는 상기 하우징의 횡단면을 기준으로 비대칭 형태로 형성된 것을 특징으로 하는 스테핑 모터.The opening stepping motor, characterized in that formed in an asymmetrical shape with respect to the cross section of the housing.
KR1020060066308A 2006-07-14 2006-07-14 Stepping motor KR100901421B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020060066308A KR100901421B1 (en) 2006-07-14 2006-07-14 Stepping motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020060066308A KR100901421B1 (en) 2006-07-14 2006-07-14 Stepping motor

Publications (2)

Publication Number Publication Date
KR20080006939A true KR20080006939A (en) 2008-01-17
KR100901421B1 KR100901421B1 (en) 2009-06-05

Family

ID=39220537

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020060066308A KR100901421B1 (en) 2006-07-14 2006-07-14 Stepping motor

Country Status (1)

Country Link
KR (1) KR100901421B1 (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3896253B2 (en) 2001-02-14 2007-03-22 日本電産サンキョー株式会社 motor

Also Published As

Publication number Publication date
KR100901421B1 (en) 2009-06-05

Similar Documents

Publication Publication Date Title
JP4163701B2 (en) Stepping motor for vibration generation
JP4728765B2 (en) Rotating machine
JP2008099550A (en) Stepping motor
US7679231B2 (en) Driving device and light amount controller
JP2007104849A (en) Small stepping motor and drive/positioning mechanism comprising it
JP5666494B2 (en) Actuator
JP2003070223A (en) Stepping motor
KR100901421B1 (en) Stepping motor
JP2006025491A (en) Drive unit and luminous energy adjuster
JP2018085818A (en) Stepping motor
JP4497884B2 (en) Drive device
JP2003244922A (en) Motor
KR20110051406A (en) Linear stepping motor
JPH06339246A (en) Bearing device for miniature motor and its fixing method
JP5126464B2 (en) Stepping motor and camera focus adjustment actuator
JPH10285898A (en) Linear actuator
KR20070114932A (en) Stepping motor
JP2007143253A (en) Stepping motor
KR100893039B1 (en) Stepping motor
JP4679114B2 (en) Stepping motor.
JP2004350409A (en) Motor
JP2007060741A (en) Driving unit
KR100901615B1 (en) Stepping motor
KR101006932B1 (en) Stepping motor
KR100301165B1 (en) Stepping motor

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
AMND Amendment
E601 Decision to refuse application
AMND Amendment
J201 Request for trial against refusal decision
B701 Decision to grant
GRNT Written decision to grant
LAPS Lapse due to unpaid annual fee