KR20090004286A - Motor for driving lens - Google Patents

Motor for driving lens Download PDF

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Publication number
KR20090004286A
KR20090004286A KR1020070068382A KR20070068382A KR20090004286A KR 20090004286 A KR20090004286 A KR 20090004286A KR 1020070068382 A KR1020070068382 A KR 1020070068382A KR 20070068382 A KR20070068382 A KR 20070068382A KR 20090004286 A KR20090004286 A KR 20090004286A
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KR
South Korea
Prior art keywords
housing
base
protrusion
lens
driving motor
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Application number
KR1020070068382A
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Korean (ko)
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KR101448815B1 (en
Inventor
민상준
박상옥
Original Assignee
엘지이노텍 주식회사
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Priority to KR1020070068382A priority Critical patent/KR101448815B1/en
Publication of KR20090004286A publication Critical patent/KR20090004286A/en
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Publication of KR101448815B1 publication Critical patent/KR101448815B1/en

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/022—Mountings, adjusting means, or light-tight connections, for optical elements for lenses lens and mount having complementary engagement means, e.g. screw/thread
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/023—Mountings, adjusting means, or light-tight connections, for optical elements for lenses permitting adjustment
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
    • G02B7/09—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted for automatic focusing or varying magnification
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B3/00—Focusing arrangements of general interest for cameras, projectors or printers
    • G03B3/10—Power-operated focusing
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B5/00—Adjustment of optical system relative to image or object surface other than for focusing
    • G03B5/04—Vertical adjustment of lens; Rising fronts
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50—Constructional details
    • H04N23/51—Housings

Abstract

A lens driving motor is provided to prevent foreign material from flowing to a combining portion of a housing and a base by inserting the protrusion of the base inside the housing. A protrusion(115) is formed in the upper side of a base(110). The exterior of the protrusion is formed in order to correspond to the inner surface of the lower part side of a housing(120). The lower end surface of the housing is contacted with the upper side of the base. The upper side of the base and the lower end surface of the housing are contacted. The exterior of the protrusion and the side inner surface of the lower part of the housing are contacted. Therefore, the base and the housing are combined. A gap does not exist in the contact area of the housing and the base. A securing projection(117) is formed in the edge of the upper side of the base. A securing groove for uniting with the securing projection is formed in the edge of the housing. The securing projection and the securing groove bind the base and the housing.

Description

렌즈 구동용 모터 {MOTOR FOR DRIVING LENS}Lens Driving Motor {MOTOR FOR DRIVING LENS}

도 1은 종래의 렌즈 구동용 모터의 베이스와 하우징을 보인 사시도.1 is a perspective view showing a base and a housing of a conventional lens driving motor.

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

도 3은 도 2에 도시된 베이스와 하우징의 결합 사시도.3 is a perspective view of the base and the housing shown in FIG.

도 4는 도 2의 분해 사시도.4 is an exploded perspective view of FIG. 2;

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

110 : 베이스 120 : 하우징110: base 120: housing

130 : 마그네트 141,145 : 스페이서130: magnet 141,145: spacer

150 : 스프링 160 : 캐리어150: spring 160: carrier

170 : 코일170: coil

본 발명은 렌즈 구동용 모터에 관한 것이다.The present invention relates to a motor for driving a lens.

디지털기기의 다기능화 추세에 따라 카메라 및 MP3 플레이어 등이 내장된 디지털기기가 개발되어 사용되고 있다. 그리고, 디지털기기에 내장된 카메라의 렌즈를 자동으로 이동시키기 위한 렌즈 구동용 모터도 개발되어 사용되고 있다.As digital devices become more versatile, digital devices with built-in cameras and MP3 players have been developed and used. In addition, a lens driving motor for automatically moving a lens of a camera embedded in a digital apparatus has been developed and used.

도 1은 종래의 렌즈 구동용 모터의 베이스와 하우징을 보인 사시도로서, 이를 설명한다.1 is a perspective view illustrating a base and a housing of a conventional lens driving motor.

도시된 바와 같이, 상호 결합되어 내부에 소정 공간을 형성하는 베이스(11)와 하우징(13)이 마련된다. 베이스(11)와 하우징(13)의 내부에는 렌즈(미도시)가 설치된 캐리어(미도시)가 승강가능하게 설치되고, 베이스(11)의 하면 및 하우징(13)의 상면에는 코일(미도시)의 인출선과 접속된 스프링(미도시)이 각각 설치된다.As shown, the base 11 and the housing 13 which are coupled to each other to form a predetermined space therein are provided. A carrier (not shown) provided with a lens (not shown) is provided in the base 11 and the housing 13 so as to be liftable, and a coil (not shown) is provided on the bottom surface of the base 11 and the top surface of the housing 13. Springs (not shown) connected to the lead wires of are respectively installed.

그리하여, 상기 코일에 전류가 공급되면 상기 캐리어가 상승하고, 상기 코일에 공급되는 전류가 차단되면 상기 스프링의 탄성력에 의하여 상기 캐리어가 최초의 상태로 복귀되면서, 상기 렌즈를 승강시킨다.Thus, when the current is supplied to the coil, the carrier rises, and when the current supplied to the coil is interrupted, the carrier is returned to the initial state by the elastic force of the spring, and the lens is lifted.

그러나, 상기와 같은 종래의 렌즈 구동용 모터는 베이스(11)와 하우징(13)의 접촉부위에 존재하는 틈 및 하우징(13)의 측면에 형성된 개방부를 통하여 습기 및 분진 등과 같은 이물질이 유입된다. 이로인해, 상기 렌즈의 초점이 흐려지고, 상기 렌즈에 멍이 생기는 단점이 있다.However, in the conventional lens driving motor as described above, foreign substances such as moisture and dust are introduced through gaps existing at the contact portions of the base 11 and the housing 13 and openings formed on the side surfaces of the housing 13. As a result, the focal point of the lens is blurred, and the lens is bruised.

본 발명은 상기와 같은 단점을 해소하기 위하여 안출된 것으로, 본 발명의 목적은 이물질의 유입에 의하여 내부의 부품이 손상되는 것을 방지할 수 있는 렌즈 구동용 모터를 제공함에 있다.The present invention has been made to solve the above disadvantages, an object of the present invention is to provide a lens driving motor that can prevent the internal components from being damaged by the inflow of foreign matter.

상기 목적을 달성하기 위한 본 발명에 따른 렌즈 구동용 모터는, 관통공이 형성된 베이스; 상면에는 출입공이 형성되고 하면은 개방되어 상기 베이스의 상면에 밀폐 결합되는 하우징; 상기 하우징의 내부에 승강가능하게 설치되어 상기 출입공을 출입하며, 렌즈가 설치되는 캐리어를 포함한다.Lens driving motor according to the present invention for achieving the above object, the base through-hole is formed; An access hole is formed in an upper surface thereof, and a lower surface thereof is opened to be hermetically coupled to an upper surface of the base; It is provided to be movable up and down inside the housing to enter and exit the access hole, and includes a carrier in which the lens is installed.

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

도시된 바와 같이, 본 실시예에 따른 렌즈 구동용 모터는 관통공(113)이 형성된 베이스(110)를 가진다. 베이스(110)의 상면에는 하면이 개방된 하우징(120)이 결합되는데, 하우징(120)의 상면에는 관통공(113)과 대응되게 출입공(123)이 형성된다. 출입공(123)으로는 후술할 캐리어(Carrier)(160)가 출입한다.As shown, the lens driving motor according to the present embodiment has a base 110 in which a through hole 113 is formed. The upper surface of the base 110 is coupled to the housing 120 is opened lower surface, the access hole 123 is formed on the upper surface of the housing 120 to correspond to the through hole 113. The carrier 160, which will be described later, enters and exits the entrance hole 123.

하우징(120)의 모서리부측 내면에는 마그네트(130)가 고정되고, 마그네트(130)의 하면과 베이스(110)의 상면 사이 및 마그네트(130)의 상면과 하우징(120)의 하면 사이에는 부품들의 치수공차 및 조립공차를 보상해 주는 하부 및 상부스페이스(Spacer)(141,145)가 각각 설치된다.The magnet 130 is fixed to the inner surface of the corner side of the housing 120, and the dimensions of the components are between the bottom surface of the magnet 130 and the top surface of the base 110 and between the top surface of the magnet 130 and the bottom surface of the housing 120. Lower and upper spacers 141 and 145 are provided to compensate for tolerances and assembly tolerances, respectively.

하부스페이서(141)의 하면과 베이스(110)의 상면 사이 및 상부스페이서(145)의 상면과 하우징(120)의 하면 사이에는 링형상의 스프링(150)의 외주면측이 지지되고, 스프링(150)의 내주면측에는 캐리어(160)가 결합된다. 그리고, 캐리어(160)의 외주면에는 코일(170)이 고정된다.The outer circumferential surface side of the ring-shaped spring 150 is supported between the lower surface of the lower spacer 141 and the upper surface of the base 110 and between the upper surface of the upper spacer 145 and the lower surface of the housing 120, and the spring 150. On the inner circumferential surface side of the carrier 160 is coupled. The coil 170 is fixed to the outer circumferential surface of the carrier 160.

그리하여, 코일(170)에 전류가 공급되면, 코일(170)과 마그네트(130) 사이에 발생되는 전자기장에 코일(170)이 상승하고, 이로인해 캐리어(160)가 상승하면서 캐리어(160)에 설치된 렌즈(미도시)를 상승시킨다. 상승된 캐리어(160)는 코 일(170)에 공급되는 전류가 차단되면, 스프링(150)에 의하여 최초의 상태로 복귀된다.Thus, when a current is supplied to the coil 170, the coil 170 is raised to the electromagnetic field generated between the coil 170 and the magnet 130, thereby raising the carrier 160 is installed in the carrier 160 Raise the lens (not shown). The raised carrier 160 is returned to its original state by the spring 150 when the current supplied to the coil 170 is cut off.

베이스(110)와 하우징(120)은 상호 결합된 후, 베이스(110)의 하면 및 하우징(120)의 상면은 이동통신기기 등과 같은 제품이 접촉된다. 그러므로, 베이스(110)의 관통공(113) 및 하우징(120)의 출입공(123)으로는 이물질이 유입될 우려가 없다.After the base 110 and the housing 120 are coupled to each other, the lower surface of the base 110 and the upper surface of the housing 120 are in contact with a product such as a mobile communication device. Therefore, there is no fear that foreign matter may flow into the through hole 113 of the base 110 and the access hole 123 of the housing 120.

그런데, 상호 접촉하는 베이스(110)의 상면과 하우징(120)의 하면 사이에 틈이 존재하면, 이물질이 유입되어 상기 렌즈의 초점을 흐리거나 상기 렌즈에 멍이 생기게 한다.However, if there is a gap between the upper surface of the base 110 and the lower surface of the housing 120 in contact with each other, foreign matter flows in and blurs the focus of the lens or causes a bruise in the lens.

이를 방지하기 위하여 본 실시예에 따른 렌즈 구동용 모터는 베이스(110)의 상면과 하우징(120)의 하면이 밀폐 결합되는데, 이를 도 3 및 도 4를 참조하여 설명한다.In order to prevent this, the lens driving motor according to the present exemplary embodiment is hermetically coupled to an upper surface of the base 110 and a lower surface of the housing 120, which will be described with reference to FIGS. 3 and 4.

도 3은 도 2에 도시된 베이스와 하우징의 결합 사시도이고, 도 4는 도 2의 분해 사시도이다.3 is a perspective view of the base and the housing shown in FIG. 2, and FIG. 4 is an exploded perspective view of FIG. 2.

도시된 바와 같이, 베이스(110)의 상면에는 외면이 하우징(120)의 하단부측 내면과 대응되게 형성된 돌출부(115)가 형성된다. 그리고, 하우징(120)은 하단면(下端面)이 베이스(110)의 상면에 접촉되고, 하단부측이 내면이 돌출부(115)의 외면과 접촉된다. 그러면, 베이스(110)의 상면과 하우징(120)의 하단면, 돌출부(115)의 외면과 하우징(120)의 하단부측 내면이 각각 접촉되어 베이스(110)와 하우징(120)의 결합되므로, 베이스(110)와 하우징(120)의 접촉 부위에는 틈이 존재하지 않는다.As shown, a protrusion 115 is formed on the upper surface of the base 110 so that the outer surface thereof corresponds to the inner surface of the lower end side of the housing 120. The lower surface of the housing 120 contacts the upper surface of the base 110, and the inner surface of the housing 120 contacts the outer surface of the protrusion 115. Then, the upper surface of the base 110 and the lower surface of the housing 120, the outer surface of the protrusion 115 and the inner surface of the lower portion of the housing 120 are in contact with each other so that the base 110 and the housing 120 are coupled to each other. There is no gap in the contact portion between the 110 and the housing 120.

베이스(110)의 상면 모서부측에는 안착돌기(117)가 각각 형성되고, 안착돌기(117)의 상면에는 삽입돌기(118)가 각각 형성된다. 그리고, 하우징(120)의 모서리부측에는 안착돌기(117)가 안착되는 안착홈(125) 및 삽입돌기(118)가 삽입되는 삽입공(127)이 각각 형성된다. 안착돌기(117)와 안착홈(125), 삽입돌기(118)와 삽입공(127)은 베이스(110)와 하우징(120)이 상호 견고하게 결합되도록 함과 동시에 일정 위치에 결합되도록 안내한다.Mounting protrusions 117 are formed on the upper edge portion side of the base 110, respectively, and insertion protrusions 118 are formed on the upper surface of the mounting protrusions 117, respectively. In addition, at the corners of the housing 120, a mounting groove 125 in which the mounting protrusion 117 is mounted and an insertion hole 127 into which the insertion protrusion 118 is inserted are formed. The seating protrusion 117 and the seating groove 125, the insertion protrusion 118 and the insertion hole 127 guide the base 110 and the housing 120 to be firmly coupled to each other and to be coupled to a predetermined position.

이상에서 설명한 바와 같이, 본 발명에 따른 렌즈 구동용 모터는 베이스의 돌출부가 하우징의 내부에 삽입되어 결합되면서, 베이스의 상면과 하우징의 하단면이 접촉하고, 돌출부의 외면과 하우징의 하단부측 내면이 접촉한다. 그러므로, 베이스와 하우징의 결합 부위에는 틈이 존재하지 않으므로, 이물질이 유입되지 못하다. 따라서, 베이스와 하우징 내부의 부품들이 이물질에 의하여 손상되지 않는다.As described above, in the lens driving motor according to the present invention, while the protrusion of the base is inserted into and coupled to the inside of the housing, the upper surface of the base and the lower surface of the housing come into contact with each other, and the outer surface of the protrusion and the inner surface of the lower end of the housing Contact. Therefore, since there is no gap in the joining portion of the base and the housing, foreign matter cannot be introduced. Therefore, the parts inside the base and the housing are not damaged by foreign matter.

또한, 베이스에 형성된 안착돌기 및 삽입돌기와 하우징에 형성된 안착홈 및 삽입공에 의하여 베이스와 하우징이 견고하게 결합되고 항상 일정 위치에 결합된다.In addition, the base and the housing are firmly coupled by the seating protrusion and the insertion protrusion formed in the base and the mounting hole and the insertion hole formed in the housing, and are always coupled to a predetermined position.

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)

관통공이 형성된 베이스;A base having a through hole formed therein; 상면에는 출입공이 형성되고 하면은 개방되어 상기 베이스의 상면에 밀폐 결합되는 하우징;An access hole is formed in an upper surface thereof, and a lower surface thereof is opened to be hermetically coupled to an upper surface of the base; 상기 하우징의 내부에 승강가능하게 설치되어 상기 출입공을 출입하며, 렌즈가 설치되는 캐리어를 포함하는 렌즈 구동용 모터.A lens driving motor including a carrier that is installed to be able to lift and move inside the housing to enter and exit the access hole, the lens is installed. 제 1 항에 있어서,The method of claim 1, 상기 베이스의 상면에는 외면이 상기 하우징의 하단부측 내면과 대응되게 형성된 돌출부가 형성되고,The upper surface of the base is formed with a protrusion formed on the outer surface corresponding to the inner surface of the lower end side of the housing, 상기 베이스의 상면과 상기 하우징의 하단면(下端面) 및 상기 돌출부의 외면과 상기 하우징의 하단부측 내면은 각각 접촉하는 렌즈 구동용 모터.And an upper surface of the base, a lower surface of the housing, an outer surface of the protrusion, and an inner surface of the lower portion of the housing contact each other.
KR1020070068382A 2007-07-07 2007-07-07 Motor for driving lens KR101448815B1 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9429734B2 (en) 2010-11-02 2016-08-30 Lg Innotek Co., Ltd. Voice coil motor and driving method thereof
US10469717B2 (en) 2009-12-21 2019-11-05 Lg Innotek Co., Ltd. Camera module and mobile phone using the same
KR20210053858A (en) * 2020-10-05 2021-05-12 엘지이노텍 주식회사 Voice coil motor
KR20220069915A (en) * 2021-05-04 2022-05-27 엘지이노텍 주식회사 Voice coil motor

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200376032Y1 (en) * 2004-11-17 2005-03-09 한봉희 Lens moving structure
JP2007147765A (en) * 2005-11-24 2007-06-14 Alps Electric Co Ltd Lens actuator

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10469717B2 (en) 2009-12-21 2019-11-05 Lg Innotek Co., Ltd. Camera module and mobile phone using the same
US11082546B2 (en) 2009-12-21 2021-08-03 Lg Innotek Co., Ltd. Camera module and mobile phone using the same
US11689650B2 (en) 2009-12-21 2023-06-27 Lg Innotek Co., Ltd. Camera module and mobile phone using the same
US9429734B2 (en) 2010-11-02 2016-08-30 Lg Innotek Co., Ltd. Voice coil motor and driving method thereof
US9448383B2 (en) 2010-11-02 2016-09-20 Lg Innotek Co., Ltd. Voice coil motor and driving method thereof
US10254504B2 (en) 2010-11-02 2019-04-09 Lg Innotek Co., Ltd. Voice coil motor and driving method thereof
KR20210053858A (en) * 2020-10-05 2021-05-12 엘지이노텍 주식회사 Voice coil motor
KR20220069915A (en) * 2021-05-04 2022-05-27 엘지이노텍 주식회사 Voice coil motor

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