KR100468743B1 - A motor assembly - Google Patents

A motor assembly Download PDF

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Publication number
KR100468743B1
KR100468743B1 KR10-2002-0038338A KR20020038338A KR100468743B1 KR 100468743 B1 KR100468743 B1 KR 100468743B1 KR 20020038338 A KR20020038338 A KR 20020038338A KR 100468743 B1 KR100468743 B1 KR 100468743B1
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KR
South Korea
Prior art keywords
lead screw
motor
free end
motor assembly
bracket
Prior art date
Application number
KR10-2002-0038338A
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Korean (ko)
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KR20040003591A (en
Inventor
이재수
Original Assignee
삼성전자주식회사
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Priority to KR10-2002-0038338A priority Critical patent/KR100468743B1/en
Publication of KR20040003591A publication Critical patent/KR20040003591A/en
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Publication of KR100468743B1 publication Critical patent/KR100468743B1/en

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Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B21/00—Head arrangements not specific to the method of recording or reproducing
    • G11B21/02—Driving or moving of heads
    • G11B21/04—Automatic feed mechanism producing a progressive transducing traverse of the head in a direction which cuts across the direction of travel of the recording medium, e.g. helical scan, e.g. by lead-screw
    • G11B21/06—Automatic feed mechanism producing a progressive transducing traverse of the head in a direction which cuts across the direction of travel of the recording medium, e.g. helical scan, e.g. by lead-screw the record carrier having mechanical means to ensure traverse movement of the head, e.g. grooves
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B21/00—Head arrangements not specific to the method of recording or reproducing
    • G11B21/16—Supporting the heads; Supporting the sockets for plug-in heads
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
    • G11B7/0857—Arrangements for mechanically moving the whole head
    • G11B7/08582—Sled-type positioners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H2025/2062—Arrangements for driving the actuator
    • F16H2025/2081—Parallel arrangement of drive motor to screw axis

Abstract

개시된 모터 어셈블리는, 브라켓에 설치되는 모터와, 모터에 의해 회전되는 리드스크류와, 브라켓에 설치되어 리드스크류의 자유단부를 직접 모터 측으로 가압하면서 지지하는 판스프링을 포함하여 구성된다. 이와 같은 구성에 의하면, 종래에 리드스크류의 자유단부를 지지하던 홀더와 볼 등의 기능을 판스프링 하나로 대체함으로써 부품수 및 제조원가를 절감할 수 있다.The disclosed motor assembly includes a motor installed on the bracket, a lead screw rotated by the motor, and a leaf spring mounted on the bracket to support the free end of the lead screw while directly pressing the motor. According to such a configuration, it is possible to reduce the number of parts and manufacturing cost by replacing the functions such as the holder and the ball, which previously supported the free end of the lead screw, with one leaf spring.

Description

모터 어셈블리{A motor assembly}Motor assembly

본 발명은 광픽업의 이송 등에 사용되는 모터 어셈블리에 관한 것이다.The present invention relates to a motor assembly for use in the transfer of optical pickup and the like.

예컨대 광디스크 드라이브에는, 도 1에 도시된 바와 같이 기록재생을 위한 광픽업(1)을 디스크(D)의 반경방향으로 왕복 이송시키는 모터 어셈블리(10)가 구비되어 있다. 이 모터 어셈블리(10)는 광픽업(1)의 기어부(1a)가 결합되는 리드스크류(11)를 포함하고 있어서, 모터(12)의 구동에 따라 리드스크류(11)가 회전하면 그와 결합된 광픽업(1)이 전진 또는 후진하게 된다.For example, the optical disc drive is provided with a motor assembly 10 for reciprocating the optical pickup 1 for recording and reproducing in the radial direction of the disc D as shown in FIG. The motor assembly 10 includes a lead screw 11 to which the gear portion 1a of the optical pickup 1 is coupled. When the lead screw 11 rotates according to the driving of the motor 12, the motor assembly 10 is coupled thereto. The optical pickup 1 is moved forward or backward.

한편, 상기 리드스크류(11)의 모터(12) 반대측인 자유단부는 도 2에 도시된 바와 같은 구조에 의해 회전가능하게 지지된다. 즉, 브라켓(13)에 홀더(14)를 설치하고, 그 안에 볼(15)을 회전가능하게 설치하여서, 리드스크류(11)의 자유단부가 홀더(14)에 삽입되면서 볼(15)에 밀착되어 원활한 회전이 가능하도록 지지되어 있다. 이를 위해 리드스크류(11)의 자유단부는 볼(15)의 외주면에 형합될 수 있도록 오목한 형상으로 되어 있다. 참조부호 16은 홀더(14)를 리드스크류(11) 쪽으로 가압함으로써 볼(15)과 리드스크류(11) 자유단부 간에 적절한 예압을 주기 위한 판스프링을 나타낸다.Meanwhile, the free end opposite to the motor 12 of the lead screw 11 is rotatably supported by the structure as shown in FIG. 2. That is, the holder 14 is installed in the bracket 13, and the ball 15 is rotatably installed therein, so that the free end of the lead screw 11 is inserted into the holder 14 and closely adhered to the ball 15. It is supported to enable smooth rotation. To this end, the free end of the lead screw 11 has a concave shape so that it can be joined to the outer circumferential surface of the ball 15. Reference numeral 16 denotes a leaf spring for imparting a suitable preload between the ball 15 and the free end of the lead screw 11 by pressing the holder 14 toward the lead screw 11.

그런데, 이와 같은 구성에 있어서는, 리드스크류(11)의 자유단부를 지지하는데에만 홀더(14), 볼(15), 판스프링(16) 등 상당히 많은 부품을 사용해야 하므로, 부품수가 많아지는 단점이 있으며, 따라서 조립 작업도 번거로워지는 문제가 있다.However, in such a configuration, since a large number of parts such as the holder 14, the ball 15, and the leaf spring 16 must be used only to support the free end of the lead screw 11, there is a disadvantage in that the number of parts increases. Therefore, there is a problem that the assembly work is also cumbersome.

따라서, 이러한 단점을 해결할 수 있는 새로운 구조의 모터 어셈블리가 요구되고 있다.Therefore, there is a need for a motor assembly of a new structure that can solve this disadvantage.

본 발명은 상기의 필요성을 감안하여 창출된 것으로서, 보다 간소한 구조로 리드스크류를 지지할 수 있도록 개선된 모터 어셈블리를 제공하는데 그 목적이 있다.The present invention has been made in view of the above necessity, and an object thereof is to provide an improved motor assembly capable of supporting a lead screw with a simpler structure.

도 1은 종래의 모터 어셈블리가 채용된 디스크 드라이브의 데크를 도시한 도면,1 is a view showing a deck of a disk drive employing a conventional motor assembly,

도 2는 도 1에 도시된 모터 어셈블리의 세부 구조를 도시한 도면,2 is a view showing a detailed structure of the motor assembly shown in FIG.

도 3은 본 발명에 따른 모터 어셈블리를 도시한 도면.3 shows a motor assembly according to the invention.

< 도면의 주요부분에 대한 부호의 설명 ><Description of Symbols for Major Parts of Drawings>

100...모터 어셈블리 110...리드 스크류100 ... motor assembly 110 ... lead screw

120...모터 130...브라켓120 ... motor 130 ... bracket

140...판스프링140 ... leaf spring

상기 목적을 달성하기 위한 본 발명은, 브라켓에 설치되는 모터와, 상기 모터에 의해 회전되는 리드스크류와, 상기 리드스크류의 자유단부를 지지하는 지지수단을 포함하는 모터 어셈블리에 있어서, 상기 지지수단은, 상기 브라켓에 설치되어 상기 리드스크류의 자유단부를 직접 상기 모터 측으로 가압하면서 지지하는 탄성부재를 포함하는 것을 특징으로 한다.The present invention for achieving the above object is a motor assembly comprising a motor installed in the bracket, a lead screw rotated by the motor, and a support means for supporting the free end of the lead screw, the support means is And an elastic member installed on the bracket and supporting the free end of the lead screw directly to the motor side.

이하 첨부된 도면을 참조하면서 본 발명에 따른 바람직한 실시예를 상세히 설명하기로 한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 3은 본 발명에 따른 모터 어셈블리를 나타낸다.3 shows a motor assembly according to the invention.

도시된 바와 같이 본 발명에 모터 어셈블리(100)는, 브라켓(130)과, 모터(120), 모터(120)에 의해 회전되는 리드스크류(110) 및, 리드스크류(110)의 자유단부를 지지하기 위한 지지수단을 구비한다.As shown in the present invention, the motor assembly 100 supports the bracket 130, the motor 120, the lead screw 110 rotated by the motor 120, and the free end of the lead screw 110. It has a supporting means for.

본 발명에서는 상기 지지수단이 양단부가 브라켓(130)에 고정되고 그 중앙부에 상기 리드스크류(110)의 자유단부가 삽입되어 지지되는 홈(141)이 형성된 판스프링(140)으로 구성된다. 즉, 여기서는 별도의 홀더를 사용하지 않고 판스프링(140) 자체가 홀더의 지지 기능 및 탄력적인 예압의 기능을 동시에 수행하도록 한 것이다. 따라서, 상기 리드스크류(110)의 자유단부는 판스프링(140)의 홈(141)에 삽입되어 지지된 상태로 상기 모터(120) 측을 향하는 탄성력을 받게 된다. 이 홈(141)은 딥 드로잉 등에 의해 형성될 수 있다.In the present invention, the support means is composed of a leaf spring 140, both ends of which are fixed to the bracket 130 and a groove 141 having a free end of the lead screw 110 inserted therein and supported. In other words, the leaf spring 140 itself performs a function of supporting the holder and a function of the elastic preload at the same time without using a separate holder. Accordingly, the free end of the lead screw 110 is subjected to an elastic force directed toward the motor 120 side while being inserted into and supported in the groove 141 of the leaf spring 140. The groove 141 may be formed by deep drawing or the like.

그리고, 상기 홈(141) 안에 삽입되는 상기 리드스크류(110)의 자유단부는 외측으로 볼록한 라운드 형상으로 만드는 것이 바람직하다. 이렇게 하면 종래와 같은 볼(15; 도 2 참조)을 사용하지 않고도 그 자유단부의 원활한 회전을 지지하는데유리하다.In addition, the free end of the lead screw 110 inserted into the groove 141 is preferably made into a rounded convex shape to the outside. This is advantageous for supporting smooth rotation of the free end without using a conventional ball 15 (see FIG. 2).

또한, 상기 홈(141) 안의 중앙에는 관통홀(142)을 뚫는 것이 바람직하다. 이것은 리드스크류(110) 자유단부와의 접촉면적을 줄여서 회전 시 발생되는 마찰을 가능한 한 억제하는 효과가 있다.In addition, the through hole 142 is preferably drilled in the center of the groove 141. This reduces the contact area with the free end of the lead screw 110 has the effect of suppressing the friction generated during rotation as possible.

상기 구성의 모터 어셈블리(100)는, 상기 판스프링(140)의 양단부를 브라켓(130)에 마련된 고정돌기(150)에 고정시킨 후 상기 모터(120)에 연결된 리드스크류(110)의 자유단부를 상기 홈(141) 속에 끼우기만 하면 조립이 완료된다. 따라서, 조립과정이 상당히 간소해진다.The motor assembly 100 of the configuration, the both ends of the leaf spring 140 is fixed to the fixing protrusions 150 provided on the bracket 130, and the free end of the lead screw 110 connected to the motor 120 Just insert into the groove 141, the assembly is completed. Therefore, the assembly process is considerably simplified.

또한, 이와 같이 조립이 완료된 상태에서는, 상기 리드스크류(110)의 자유단부가 판스프링(140)의 탄성력에 의해 예압을 받은 상태에서 지지되고 있고, 또한 상기와 같이 자유단부를 마치 볼과 같은 라운드 형상으로 만들고 그와 접촉되는 홈(141) 중앙에 관통홀(142)을 뚫어서 접촉면적을 줄이고 있기 때문에, 리드스크류(110)의 회전을 안정적이면서도 부드럽게 지지할 수 있다.In addition, in the state in which the assembly is completed in this way, the free end of the lead screw 110 is supported in a state of being preloaded by the elastic force of the leaf spring 140, and the free end is round like a ball as described above. Since the contact area is reduced by drilling the through hole 142 in the center of the groove 141 contacting with the shape, the rotation of the lead screw 110 can be stably and smoothly supported.

결국, 간소화된 구성으로 리드스크류(110)의 회전을 원활하게 지지할 수 있는 것이다.As a result, it is possible to smoothly support the rotation of the lead screw 110 in a simplified configuration.

상술한 바와 같이 본 발명에 따른 모터 어셈블리는 다음과 같은 효과를 갖는다.As described above, the motor assembly according to the present invention has the following effects.

첫째, 종래에 리드스크류의 자유단부를 지지하던 홀더와 볼 등의 기능을 판스프링 하나로 대체함으로써 부품수 및 제조원가를 절감할 수 있다.First, it is possible to reduce the number of parts and the manufacturing cost by replacing the functions of the holder and the ball, such as the holder and the ball, which previously supported the free end of the lead screw.

둘째, 부품수 절감에 따라 조립작업이 간편해진다.Second, the assembly work becomes simpler as the number of parts is reduced.

셋째, 제품의 소형 경량화에 유리하다.Third, it is advantageous to reduce the size and weight of the product.

이러한 본 발명은 상기에 설명되고 도면에 예시된 것에 의해 한정되는 것은 아니며, 다음에 기재되는 청구의 범위 내에서 더 많은 변형 및 변용예가 가능한 것임은 물론이다.This invention is not limited by the above described and illustrated in the drawings, of course, more variations and modifications are possible within the scope of the following claims.

Claims (4)

브라켓에 설치되는 모터와, 상기 모터에 의해 회전되는 리드스크류와, 상기 리드스크류의 자유단부를 지지하는 지지수단을 포함하는 모터 어셈블리에 있어서,In a motor assembly comprising a motor installed in the bracket, a lead screw rotated by the motor, and a support means for supporting a free end of the lead screw, 상기 지지수단은,The support means, 양단부가 상기 브라켓에 고정되고, 그 중앙부에는 홈이 형성되어서 상기 홈에 끼워지는 상기 리드스크류의 자유단부를 지지함과 동시에 상기 모터측으로 가압하는 탄성부재를 포함하는 것을 특징으로 하는 모터 어셈블리.Both ends are fixed to the bracket, the center portion of the motor assembly characterized in that it comprises an elastic member for supporting the free end of the lead screw that is fitted in the groove and pressurized toward the motor side. 제1항에 있어서,The method of claim 1, 상기 리드스크류의 자유단부는 외측으로 볼록한 라운드 형상으로 이루어진 것을 특징으로 하는 모터 어셈블리.The free end of the lead screw is a motor assembly, characterized in that the outer convex round shape. 삭제delete 제1항에 있어서,The method of claim 1, 상기 홈의 중앙에는 관통홀이 형성된 것을 특징으로 하는 모터 어셈블리.Motor assembly, characterized in that the through-hole is formed in the center of the groove.
KR10-2002-0038338A 2002-07-03 2002-07-03 A motor assembly KR100468743B1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61177686A (en) * 1985-01-31 1986-08-09 Copal Denshi Kk Supporting mechanism for lead screw of magnetic head driving motor for magnetic recording device
JPH07244938A (en) * 1994-02-28 1995-09-19 Kenwood Corp Optical pickup feeding mechanism for optical disk device
JPH09306119A (en) * 1996-05-14 1997-11-28 Sony Corp Transfer mechanism for optical pickup device
KR19990025431U (en) * 1997-12-17 1999-07-05 이형도 Drive of optical pickup

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61177686A (en) * 1985-01-31 1986-08-09 Copal Denshi Kk Supporting mechanism for lead screw of magnetic head driving motor for magnetic recording device
JPH07244938A (en) * 1994-02-28 1995-09-19 Kenwood Corp Optical pickup feeding mechanism for optical disk device
JPH09306119A (en) * 1996-05-14 1997-11-28 Sony Corp Transfer mechanism for optical pickup device
KR19990025431U (en) * 1997-12-17 1999-07-05 이형도 Drive of optical pickup

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