WO2017222188A1 - Ball guide structure of camera module - Google Patents

Ball guide structure of camera module Download PDF

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Publication number
WO2017222188A1
WO2017222188A1 PCT/KR2017/005142 KR2017005142W WO2017222188A1 WO 2017222188 A1 WO2017222188 A1 WO 2017222188A1 KR 2017005142 W KR2017005142 W KR 2017005142W WO 2017222188 A1 WO2017222188 A1 WO 2017222188A1
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WO
WIPO (PCT)
Prior art keywords
balls
lens carrier
spacer
protrusion
carrier
Prior art date
Application number
PCT/KR2017/005142
Other languages
French (fr)
Korean (ko)
Inventor
한민석
이규민
손원민
박원석
이신태
Original Assignee
(주)알비케이이엠디
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
Priority claimed from KR1020160077707A external-priority patent/KR101794582B1/en
Priority claimed from KR1020160077709A external-priority patent/KR101781406B1/en
Application filed by (주)알비케이이엠디 filed Critical (주)알비케이이엠디
Publication of WO2017222188A1 publication Critical patent/WO2017222188A1/en

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Classifications

    • 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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B17/00—Systems with reflecting surfaces, with or without refracting elements
    • G02B17/02—Catoptric systems, e.g. image erecting and reversing system
    • 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
    • G02B7/10—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens
    • 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
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/02—Bodies

Definitions

  • the present invention relates to a ball guide structure of a camera module, and more particularly, to a ball guide structure of a camera module for smoothly moving in the optical axis direction of a lens carrier having a lens for automatically adjusting the focus in a small camera mounted on a mobile terminal. It is about.
  • Cited Invention Korean Patent Publication No. 10-1535548
  • the camera lens module 10 is covered with an upper case 11 and has four corner regions 111-114.
  • a lens barrel 13 including a lens and a lens carrier 14 accommodating the lens barrel 13 and moving along the optical axis are located inside the upper case 11.
  • the lens barrel 13 is cylindrical and moves along the optical axis by the AF driver in a state completely accommodated in the lens carrier 14 to adjust the lens focus.
  • the lens carrier 14 has the lens barrel 13 completely accommodated therein, and has a flat rectangular magnet mounting groove on an outer circumferential surface thereof.
  • the lens carrier 14 is guided along the optical axis by a pair of guide devices.
  • the pair of guide devices includes known guide parts g1 and g2 and ball bearings b1 and b2, respectively.
  • the lens barrel 13 may be formed in a structure that can be separated from and coupled to the lens carrier or in an integrated structure.
  • the ball bearing is used to restrain the ball bearing, which may generate a space between the ball bearing and the guide part according to the tolerance of the guide part, which may cause the lens carrier to be distorted.
  • the size is large, there is a limit to restrain the ball bearing only by the guide portion mounted only on one surface.
  • the present invention is to solve the above problems, it is possible to constrain the ball in a simple structure, the object of the present invention is to propose a structure that can be miniaturized.
  • the ball guide structure of the camera module of the present invention is to achieve the above object, the camera module, the spacer is formed through the space from the top toward the bottom; A lens carrier positioned in a through space of the spacer and mounting a lens therein; And a plurality of balls positioned between the lens carrier and the spacer, wherein the lens carrier has a plurality of lens carrier protrusions protruding in the direction toward the balls to restrain the balls. Spacer protrusions protruding in the direction toward the ball to restrain the ball is formed, the space is formed by the lens carrier protrusion and the spacer protrusion to restrain the ball inside.
  • the spacer and the lens carrier each have a plurality of corners, the magnet is mounted to the corner of some of the plurality of corners of the spacer; AF coils mounted to corners of a portion of the lens carrier so as to face the magnet; A yoke mounted to the lens carrier so as to be positioned on one side of the AF coil, and having a magnetic yoke, wherein the lens carrier is rotated by using an attraction force generated between the yoke and the magnet.
  • the magnet is mounted on the corner facing the diagonal of the spacer;
  • An AF coil mounted on an edge of the lens carrier so as to face the magnet;
  • a yoke mounted to the lens carrier so as to be positioned on one side of the AF coil, and having a magnetic yoke; and rotating the lens carrier using an attraction force generated between the yoke and the magnet.
  • the plurality of balls are mounted on the corners facing each other diagonally of the spacer and the lens carrier, the plurality of balls are characterized in that located so as to cross up and down, in the corner where the ball is located in the spacer, Spacer protrusions abutting a portion of the plurality of balls; is formed, and a plurality of lens carrier protrusions abutting a portion of the plurality of balls is formed in the two corners of the ball position in the lens carrier, the plurality of lenses A carrier protrusion and the spacer protrusion are used to form a space in which the plurality of balls are individually located.
  • the camera module may further include a yoke magnet mounted inside the spacer and positioned to face the plurality of balls; Located in the middle of the plurality of balls, the yoke facing the yoke magnet; further comprises, and using the lens carrier protrusion and the spacer protrusion to form a space in which the plurality of balls are individually located inside It is characterized in that, by using the force generated between the yoke and the yoke magnet to increase the restraint of the ball.
  • the lens carrier protrusion is a carrier upper protrusion which separates a space between two balls of the upper side.
  • the first carrier side protrusion and the second carrier side protrusion are straight in a downward direction and bent twice at right angles so as to be located on one side of the two upper balls and the upper side and the other side of the two lower balls. It has a shape.
  • the present invention minimizes the size of the camera module by using the spacer and the lens carrier as a ball guide, and guides the ball to guide the ball by inducing rotational force to the lens carrier using magnets of magnets and yokes to increase the binding force based on the optical axis Shaking is reduced by the ball when the furnace is driven, and there is an effect of improving the quality of the product.
  • the present invention utilizes the spacer and the lens carrier as a ball guide to minimize the size of the camera module, guide the ball using the magnet of the yoke magnet and yoke to increase the binding force by the ball when the lens is driven up and down based on the optical axis There is an effect of improving the quality of the product is reduced shaking.
  • FIG. 2 is a perspective view of a ball guide structure of the camera module according to the first embodiment of the present invention.
  • Figure 3 is an exploded view of the ball guide structure of the camera module according to the first embodiment of the present invention.
  • FIG 4 is an exploded view in another direction of the ball guide structure of the camera module according to the first embodiment of the present invention.
  • FIG 5 is a partial view of a ball guide structure of the camera module according to the first embodiment of the present invention.
  • Figure 6 is a one-way cutaway view of the ball guide structure of the camera module according to the first embodiment of the present invention.
  • Figure 7 is a partial view showing the restraint structure and direction of the ball guide structure of the camera module according to the first embodiment of the present invention.
  • FIG. 8 is a perspective view of a ball guide structure of the camera module according to the second embodiment of the present invention.
  • 9 and 10 are one-way separation perspective views of the ball guide structure sequentially showing the configuration of the camera module according to the second embodiment of the present invention along the optical axis.
  • 11 and 12 are different perspective views of a ball guide structure sequentially showing a configuration of a camera module according to a second embodiment of the present invention along an optical axis.
  • FIG. 13 is a partial view of a ball guide structure of the camera module according to the second embodiment of the present invention.
  • 15 is a cross-sectional view of another direction showing a constraining structure and a direction of a ball guide structure of a camera module according to a second embodiment of the present invention.
  • the outer shape of the camera module 1200 is formed by the combination of the cover 1201 and the base 1230, and the cover 1201 and the base 1230 of the base 1230.
  • the interior space is equipped with a number of components including the lens carrier 1220 and the spring 1230.
  • a through hole 1200-1 that is cylindrically penetrated from the upper side to the lower side is formed in the camera module 1200, and a lens (not shown) is positioned in the through hole 1200-1.
  • a spacer 1210 is positioned below the cover 1201, and a space penetrated from the top to the bottom is formed in the spacer 1210, and the lens carrier 1220 is positioned in the space.
  • the lens carrier 1220 moves up and down inside the spacer 1210 to adjust the focus.
  • the spacer 1210 has four corners, and two of the four corners have a magnet 1202, an AF coil 1203, and a yoke 1204, and the other two corners have a ball 1205.
  • the magnet 1202 and the AF coil 1203, the yoke 1204, and the ball 1205 are fixed between the spacer 1210 and the lens carrier 1220.
  • the spacer 1210 and the lens carrier 1220 are formed with a coating portion for mounting the magnet 1202, the AF coil 1203, the yoke 1204, and the ball 1205, respectively.
  • the spacer 1210 In the spacer 1210, the two corners at which the plurality of balls 1205 are positioned, the spacer protrusion 1211 restricting the position of the ball 1205 by partially contacting the ball 1205 and the lens carrier 1220 to be described later. Spacer through portions 1212 in which the protrusions of the are positioned are respectively formed.
  • Magnet 1202 is formed in a triangular structure along the shape of the corner is coupled to the lower side of the two corners facing diagonally of the four corners of the spacer 1210.
  • two of the four corners of the lens carrier 1220 are mounted with two AF coils 1203 to face each magnet 1202, and a yoke 1204 on one side of each AF coil 1203. ) Is mounted, and the yoke 1204 has magnetism to generate magnets and attraction force.
  • the lens carrier 1220 is provided with a plurality of protrusions at the point facing the spacer protrusion 1211 to restrain the ball 1205.
  • two balls 1205 are mounted at each corner, and the number can be adjusted as necessary.
  • two balls 1205 are positioned to intersect up and down. Accordingly, a first lens carrier protrusion 1221 is formed at an image side of the lens carrier 1220 so that a portion of the two lenses 1205 is in contact with the ball 1205 of the image side, and the first lens carrier protrusion 1221 of the first lens carrier protrusion 1221 is formed.
  • a second lens carrier protrusion 1222 is formed to be in contact with the ball 1205 on the image side.
  • a third lens carrier protrusion 1223 is formed at a lower portion where the image ball 1205 is located to partially contact the image ball 1205. That is, the first lens carrier protrusion 1221 and the second lens carrier protrusion 1222 are in contact with the side surface portion of the image ball 1205, and the third lens carrier protrusion 1223 is in contact with the lower side. Accordingly, the upper ball 1205 is constrained in the space formed by the three lens carrier protrusions 1221, 1222, and 1223 and the spacer protrusion 1211 of the spacer 1210.
  • the first lens carrier protrusion 1221 is in contact with the upper part of the lower ball 1205, and is in contact with the third lens carrier protrusion 1223 and the side surface of the lower ball 1205. do. Accordingly, the lower ball 1205 is constrained in a space formed by the first lens carrier protrusion 1221, the third lens carrier protrusion 1223, and the spacer protrusion 1211 of the spacer 1210.
  • two fourth lens carrier protrusions 1224 are formed in the lens carrier 1220, which are coupled to the empty space inside the coil 1203, at a portion contacting the coil 1203.
  • a spring 1230 is positioned below the lens carrier 1220 to provide elasticity when the lens carrier 1220 moves, and the spring 1230 is provided with a first spring 1231 formed so that two corner portions thereof are connected to each other. It consists of two second springs 1232 mounted at two corners, each having a contact portion 1233 at a right angle and extending downwards to which a current is applied.
  • a base 1240 is positioned below the spring 1230, and four corners of the upper surface of the base 1240 are provided with a first base upper protrusion 1242a and a second base upper protrusion 12 protruding to abut the spring 1230. 1242b), the first base upper protrusion 1242a partially contacts the first spring, and the second base upper protrusion 1242b partially contacts the second spring 1232 and the second spring 1232 is formed therein.
  • the through hole through which the contact portion 1233 passes through is formed.
  • the first base lower protrusion 1241a and the second base lower protrusion 1241b are formed at four corners of the lower side of the base 1240, respectively, protruding downward, and below the first spring 1231.
  • the base lower protrusion 1241a is positioned, and below the two second springs 1232, the second base lower protrusion 1241b is positioned, which is the second spring 1232 passing through the second base upper protrusion 1242b.
  • the contact portion 1233 of the has a form that is escaped to be exposed to the outside.
  • the upper ball 1205 and the lower ball 1205 may include a first lens carrier protrusion 1221, a second lens carrier protrusion 1222, and a third lens carrier protrusion of the lens carrier 1220. 1223, the first lens carrier protrusion 1221, the second lens carrier protrusion 1222, the third lens carrier protrusion 1223, and the spacer protrusion may be formed in the shape of the ball 1205. It may protrude in a shape that is curved to fit.
  • FIG. 6 is a cross-sectional view cut along the mounting portion of the ball 1205 of the camera module 1200 according to the first embodiment of the present invention, and a plurality of balls 1205 are arranged in the lens carrier 1220 and the spacer. It can be seen that 1210 is constrained inside the space it creates. That is, as the plurality of balls 1205 are individually positioned in each space, the product can be miniaturized.
  • the yoke 1204 having a magnet mounted on one side of the AF coil 1203 generates an attraction force with the magnet 1202 to move the lens carrier 1220 to the AF coil 1203 and the magnet ( 1202 is rotated toward each other, which causes the lens carrier 1220 to rotate in the direction toward the spacer 1210 to further increase the restraint force of the plurality of balls 1205.
  • the ball 1205 reduces the shake when the lens is vertically driven with respect to the optical axis, thereby improving the quality of the product.
  • the outer shape of the camera module 200 is formed by a combination of the spacer 210 and the base 220, and a space formed inside the spacer 210 and the base 220.
  • a plurality of components, including the lens carrier 240 and the spring 230, are mounted thereon, and a portion of the contact portion 250 is exposed to the lower side of the base 220.
  • a through hole 200-1 is formed in the camera module 200 through a cylindrical shape from the upper side to the lower side, and a lens (not shown) is positioned in the through hole 200-1.
  • the spacer 210 has a form of a square pillar, the bottom of which is opened and a space is formed therein, and a through hole penetrated in a polygonal shape from above to downward is formed.
  • four side surfaces of the spacer 210 are formed with a first cover cover portion 211 contacting the protrusion of the base 220, which will be described later, and protrudes inward in parallel with a diagonal line at one of the four corners.
  • the spacer protrusion 212 is formed, and the spacer protrusion 212 is formed with a second cover cover portion 213 for mounting the yoke magnet 206 to be described later.
  • a spring 230 is positioned inside the spacer 210 to provide elasticity when the lens carrier 240 moves up and down along the optical axis, and four first spring through holes 231 formed inside the spring 230. ) And four second spring through holes 232 formed on the outside of the spring 230 and the other components.
  • the lens carrier 240 is positioned below the spring 230, and the lens carrier 240 has a circular through hole penetrating from the top to the bottom thereof, and the lens is fixed thereto.
  • the lens carrier 240 has four corners, and three of four corners are formed with carrier wings 242 protruding toward the outer surface.
  • the upper surface of the lens carrier 240 is formed with a carrier coupling protrusion 241 is coupled to the first spring through hole 231 of the spring 230.
  • protrusions for forming a space in which the plurality of balls 201 are included are formed symmetrically from side to side, and a yoke 205 having a magnetic portion at the center thereof.
  • the carrier escape portion 243 which is partially escaped, is formed to be located.
  • One side of the lens carrier 240 on which the plurality of balls 201 and the yoke 205 are mounted faces the spacer protrusion 212 of the spacer 210, and the spacer protrusion 212 is connected to the plurality of balls 201. Each touches to limit the space.
  • a magnet 202, a plate 203, and a coil 204 are positioned below the lens carrier 240, and are fixed between the lens carrier 240 and the base 220.
  • the magnet 202, the plate 203, and the coil 204 are respectively located at two diagonally opposite corners, and the yoke magnet 206 is positioned at the other corner.
  • the plate 203 is mounted to the lower side of the magnet 202 and the coil 204 has a shape surrounding the magnet 202 and the plate 203.
  • the magnet 202, the plate 203, and the coil 204 are located below two carrier wings 242 facing diagonally out of three carrier wings 242 protruding on the side of the lens carrier 240.
  • the yoke magnet 206 mounted on the second cover cover 213 of the spacer 210 is positioned at a position facing the yoke 205 mounted on the carrier cover 243 of the lens carrier 240.
  • the attraction between the magnet 206 and the yoke 205 is generated.
  • a contact part 250 is partially exposed to the outside to apply electricity to the inside, and the contact part 250 includes the first contact part 251, and the first contact part 251.
  • the second contact portion 252 and the third contact portion 253 is divided into.
  • the second contact portion 252 and the third contact portion 253 are bent at a right angle to the lower side is formed with a contact portion bent portion 255, part of which is exposed to the outside of the camera module 200, the mounting of the contact portion 250
  • Six contact through holes 254 are formed for this purpose.
  • the base 220 has a through hole penetrating from the top to the bottom therein, has a shape of a square pillar, and has two first base lower protrusions 221 protruding downward from four corners of the bottom surface.
  • the second base lower protrusion 222 is provided, and the second base lower protrusion is provided with a space escaped so that the contact portion bent portion 255 of the contact part 250 is exposed to the outside.
  • Four base upper protrusions 223 protruding upward on four sides of the upper surface of the base 220 are formed.
  • the base upper protrusion 223 has a shape of protruding firstly upward in the shape of a quadrangle and partially protruding upwardly from the upper surface of the first protruding portion.
  • First base coupling protrusions 224 are formed on the upper surfaces of the second protruding portions of the base upper protrusion 223, respectively, and are coupled to the second spring through holes 232 of the spring 230, and the upper surface of the base 220.
  • a plurality of second base coupling protrusions 225 are formed therein to be coupled to the contact portion through hole 254 of the contact portion 250.
  • the base upper protrusion 223 contacts the first cover cover 211 of the spacer 210.
  • FIG. 13 shows in detail a portion where the four balls 201 of the lens carrier 240 are mounted.
  • Four balls 201 are positioned on the side of the lens carrier 240 and located between the side of the lens carrier 240 and the side of the spacer 210, two of which are on the upper side and two of the sides on the lower side. Are positioned to cross each other up and down.
  • a lens carrier protrusion is formed in the lens carrier 240, and the lens carrier protrusion is a carrier upper protrusion 244, a first carrier side protrusion 245, a second carrier side protrusion 246, and a first carrier bottom protrusion 247. And a second carrier lower protrusion 248.
  • a carrier upper protrusion 244 is formed on the lens carrier 240 to separate a space between two upper balls 201, and a carrier cover 243 is formed on the carrier upper protrusion 244 to yoke. 205 is mounted.
  • the first carrier lower protrusion 247 and the second carrier lower protrusion 248 are formed at the lower portions of the two upper balls 201, respectively, and the first carrier lower protrusion 247 and the second carrier lower protrusion 248 are formed.
  • On the side of the two balls 201 mounted on the lower side are located respectively.
  • the first carrier side protrusion 245 and the second carrier side part for providing a space in which the ball 201 is located on both side surfaces of the two upper balls 201 and the lower two balls 201.
  • a protrusion 246 is formed.
  • the first carrier side protrusion 245 and the second carrier side protrusion 246 are directed downward to limit both the upper and one sides of the lower two balls 201 as well as the one side of the two upper balls 201. It is straight and then bent twice at right angles. Accordingly, the upper two balls 201 are limited to the side surface by using the carrier upper protrusion 244, the first carrier side protrusion 245 and the second carrier side protrusion 246, and the first carrier lower protrusion ( 247 and the second carrier lower protrusion 248 are restricted to move downward.
  • the lower two balls 201 are restricted to move to one side by using the first carrier lower protrusion 247 and the second carrier lower protrusion 248, and the first carrier side protrusion 245 and the second carrier are restricted.
  • the side protrusion 246 movement to the upper side and movement to one side are restricted. That is, four balls (4) are formed using the carrier upper protrusion 244, the first carrier side protrusion 245, the second carrier side protrusion 246, the first carrier lower protrusion 247, and the second carrier lower protrusion 248.
  • Four spaces are provided so that 201) is located inside each. Therefore, since the four balls 201 are located separately, there is an effect that the size of the product is reduced.
  • the yoke magnet 206 and the yoke 205 are positioned to face each other, and the attraction between the yoke magnet 206 and the yoke 205 is generated, so that the lens carrier 240 may be separated from the spacer 210.
  • the plurality of balls 201 are in contact with the spacer protrusion 212 of the spacer 210 to be restricted in movement, thereby increasing the restraining force of restraining the plurality of balls 201. Therefore, the shake is reduced by the plurality of balls 201 when the lens is vertically driven based on the optical axis, and the quality of the product is improved.
  • the second embodiment four balls 201, two magnets 202, a plate 203, a coil 204, and one yoke 205 and a yoke magnet 206 are proposed.
  • the position can be adjusted, and the number and position of the plurality of engaging projections and through holes for the coupling of the components can also be adjusted as necessary.
  • the shape and coupling structure of each part can be changed as needed.
  • the ball guide structure of the camera module of the present invention is not limited to the above-described embodiment, and may be variously modified and implemented within the scope of the technical idea described in the claims of the present invention.
  • the present invention relates to a ball guide structure of a camera module for smoothly moving in the optical axis direction of a lens carrier with a built-in lens for automatically adjusting the focus in a small camera mounted on a portable terminal, etc.
  • the size of the camera module can be minimized and the magnetism of the magnet and yoke can be used to guide the ball by inducing rotational force to the lens carrier to increase the binding force, thus reducing the shaking by the ball when the lens is driven up and down based on the optical axis.
  • the quality of a product can be improved.

Abstract

The present invention relates to a ball guide structure of a camera module and, particularly, to a ball guide structure of a camera module, which allows a lens carrier, in which a lens is built so as to automatically adjust the focus of a small-sized camera mounted on a portable terminal or the like, to smoothly move in the optical axis direction. The camera module of the present invention includes: a spacer in which a space passing through from the top portion to the bottom portion thereof is formed; a lens carrier which is disposed in the space passing through the spacer and in which a lens is mounted; and a plurality of balls disposed between the lens carrier and the spacer. A plurality of lens carrier protruding portions protruding toward the balls are formed in the lens carrier in order to restrain the balls, a spacer protruding portion protruding toward the balls is formed on the spacer in order to restrain the balls, and a space for restraining the balls therein by using the lens carrier protruding portions and the spacer protruding portion is formed.

Description

카메라 모듈의 볼 가이드 구조Ball guide structure of the camera module
본 발명은 카메라 모듈의 볼 가이드 구조에 관한 것으로, 특히 휴대단말기 등에 장착되는 소형 카메라에서 자동으로 초점을 조절하기 위해 렌즈가 내장된 렌즈 캐리어의 광축 방향 이동을 원활하게 하는 카메라 모듈의 볼 가이드 구조에 관한 것이다.The present invention relates to a ball guide structure of a camera module, and more particularly, to a ball guide structure of a camera module for smoothly moving in the optical axis direction of a lens carrier having a lens for automatically adjusting the focus in a small camera mounted on a mobile terminal. It is about.
일반적으로 카메라 모듈에서 자동으로 초점을 조절하기 위해서 내부에 렌즈가 장착된 렌즈 캐리어를 광축 방향으로 이동시키는 것이 필요하다. 따라서 렌즈 캐리어가 광축 방향 이동할 때에 간섭이 발생 되지 않는 원활한 이동을 위해 다수의 볼을 사용한다. 이러한 휴대 단말기의 카메라 렌즈 모듈이 대한민국 등록특허공보 제10-1535548호(이하, 인용발명)에 기재되어 있다. In general, in order to adjust the focus automatically in the camera module, it is necessary to move the lens carrier mounted with the lens in the optical axis direction. Therefore, when the lens carrier moves in the optical axis direction, a plurality of balls are used for smooth movement without interference. The camera lens module of such a mobile terminal is described in Korean Patent Publication No. 10-1535548 (hereinafter referred to as Cited Invention).
도 1을 참조하면 인용발명에 따른 카메라 렌즈 모듈(10)은 외형은 상부 케이스(11)로 덮어지고, 4개의 모서리 영역(111-114)이 구비된다. 상기 상부 케이스(11)의 내부에는 렌즈를 구비한 렌즈 배럴(13)과, 상기 렌즈 배럴(13)을 내부에 수용하여 함께 광축을 따라서 이동하는 렌즈 캐리어(14)가 위치한다. 상기 렌즈 배럴(13)은 원통형으로, 상기 렌즈 캐리어(14)에 완전히 수용된 상태로 AF 구동부에 의해 광축을 따라서 이동하며 렌즈 초점을 조절한다. 상기 렌즈 캐리어(14)는 내부에 상기 렌즈 배럴(13)이 완전히 수용되고, 외주면에 평탄한 직사각형의 자석 장착홈이 구비된다. 상기 렌즈 캐리어(14)는 한 쌍의 가이드 장치에 의해 광축을 따라서 가이드된다. 상기 한 쌍의 가이드 장치는 공지된 가이드부(g1,g2)와 볼 베어링(b1,b2)을 각각 포함한다. 상기 렌즈 배럴(13)은 상기 렌즈 캐리어와 분리 및 결합 가능한 구조 또는 일체형 구조로 형성될 수 있다.Referring to FIG. 1, the camera lens module 10 according to the present invention is covered with an upper case 11 and has four corner regions 111-114. Inside the upper case 11, a lens barrel 13 including a lens and a lens carrier 14 accommodating the lens barrel 13 and moving along the optical axis are located. The lens barrel 13 is cylindrical and moves along the optical axis by the AF driver in a state completely accommodated in the lens carrier 14 to adjust the lens focus. The lens carrier 14 has the lens barrel 13 completely accommodated therein, and has a flat rectangular magnet mounting groove on an outer circumferential surface thereof. The lens carrier 14 is guided along the optical axis by a pair of guide devices. The pair of guide devices includes known guide parts g1 and g2 and ball bearings b1 and b2, respectively. The lens barrel 13 may be formed in a structure that can be separated from and coupled to the lens carrier or in an integrated structure.
이러한 인용발명의 경우 가이드부를 이용해 볼 베어링을 구속하는데, 이는 가이드부의 공차에 따라 볼 베어링과 가이드부 사이의 공간이 발생해 상기 렌즈 캐리어가 뒤틀리는 현상이 발생할 수 있고, 가이드부의 형성을 위해 카메라 모듈의 크기가 커지는 단점이 있으며, 일면에만 장착되는 가이드부 만으로 볼 베어링을 구속하는데에는 한계가 있다.In the case of this invention, the ball bearing is used to restrain the ball bearing, which may generate a space between the ball bearing and the guide part according to the tolerance of the guide part, which may cause the lens carrier to be distorted. There is a disadvantage that the size is large, there is a limit to restrain the ball bearing only by the guide portion mounted only on one surface.
본 발명은 상기한 문제를 해결하기 위한 것으로, 간단한 구조로 볼의 구속이 가능하며, 제품의 소형화가 가능한 구조를 제안하는데 그 목적이 있다.The present invention is to solve the above problems, it is possible to constrain the ball in a simple structure, the object of the present invention is to propose a structure that can be miniaturized.
본 발명의 카메라 모듈의 볼 가이드 구조는 상기 목적을 달성하기 위한 것으로서, 상기 카메라 모듈은, 상부에서 하부를 향해 관통된 공간이 형성되는 스페이서; 상기 스페이서의 관통된 공간에 위치하고, 내부에 렌즈를 장착하는 렌즈 캐리어; 상기 렌즈 캐리어와 상기 스페이서의 사이에 위치하는 다수의 볼;을 포함하여 이루어지며, 상기 렌즈 캐리어에는 상기 볼을 구속하기 위해 상기 볼을 향한 방향으로 돌출된 다수의 렌즈 캐리어 돌출부;가 형성되고, 상기 스페이서에는 상기 볼을 구속하기 위해 상기 볼을 향한 방향으로 돌출된 스페이서 돌출부;가 형성되며, 상기 렌즈 캐리어 돌출부와 상기 스페이서 돌출부를 이용해 상기 볼을 내부에 구속하는 공간이 형성된다.The ball guide structure of the camera module of the present invention is to achieve the above object, the camera module, the spacer is formed through the space from the top toward the bottom; A lens carrier positioned in a through space of the spacer and mounting a lens therein; And a plurality of balls positioned between the lens carrier and the spacer, wherein the lens carrier has a plurality of lens carrier protrusions protruding in the direction toward the balls to restrain the balls. Spacer protrusions protruding in the direction toward the ball to restrain the ball is formed, the space is formed by the lens carrier protrusion and the spacer protrusion to restrain the ball inside.
그리고 상기 스페이서 및 상기 렌즈 캐리어는 각각 다수의 모서리를 가지며, 상기 스페이서의 다수의 모서리 중 일부의 모서리에 장착되는 마그네트; 상기 마그네트와 마주하도록 상기 렌즈 캐리어의 일부의 모서리에 각각 장착되는 AF코일; 상기 AF코일의 일측면에 위치하도록 상기 렌즈 캐리어에 장착되며, 자성을 가진 요크;를 더 포함하여 이루어지며, 상기 요크와 상기 마그네트의 사이에서 발생하는 인력을 이용해 상기 렌즈 캐리어를 회전시켜 상기 볼의 구속력을 높인다.The spacer and the lens carrier each have a plurality of corners, the magnet is mounted to the corner of some of the plurality of corners of the spacer; AF coils mounted to corners of a portion of the lens carrier so as to face the magnet; A yoke mounted to the lens carrier so as to be positioned on one side of the AF coil, and having a magnetic yoke, wherein the lens carrier is rotated by using an attraction force generated between the yoke and the magnet. Increase binding
또한, 상기 카메라 모듈은, 상기 스페이서의 대각으로 마주하는 모서리에 장착되는 마그네트; 상기 마그네트와 마주하도록 상기 렌즈 캐리어의 모서리에 장착되는 AF코일; 상기 AF코일의 일측면에 위치하도록 상기 렌즈 캐리어에 장착되며, 자성을 가진 요크;를 포함하여 이루어지며, 상기 요크와 상기 마그네트의 사이에서 발생하는 인력을 이용해 상기 렌즈 캐리어를 회전시켜 상기 볼의 구속력을 높인다.In addition, the camera module, the magnet is mounted on the corner facing the diagonal of the spacer; An AF coil mounted on an edge of the lens carrier so as to face the magnet; A yoke mounted to the lens carrier so as to be positioned on one side of the AF coil, and having a magnetic yoke; and rotating the lens carrier using an attraction force generated between the yoke and the magnet. Increase
그리고 상기 다수의 볼은 상기 스페이서와 상기 렌즈 캐리어의 대각으로 마주하는 모서리에 각각 장착되고, 상기 다수의 볼은 상하로 교차하도록 위치하는 것을 특징으로 하며, 상기 스페이서에서 상기 볼이 위치하는 모서리에는, 상기 다수의 볼과 일부가 맞닿는 스페이서 돌출부;가 형성되고, 상기 렌즈 캐리어에서 상기 볼이 위치하는 두 모서리에는, 상기 다수의 볼과 일부가 맞닿는 다수의 렌즈 캐리어 돌출부;가 형성되며, 상기 다수의 렌즈 캐리어 돌출부와 상기 스페이서 돌출부를 이용해 상기 다수의 볼이 개별로 위치하는 공간을 형성한다.And the plurality of balls are mounted on the corners facing each other diagonally of the spacer and the lens carrier, the plurality of balls are characterized in that located so as to cross up and down, in the corner where the ball is located in the spacer, Spacer protrusions abutting a portion of the plurality of balls; is formed, and a plurality of lens carrier protrusions abutting a portion of the plurality of balls is formed in the two corners of the ball position in the lens carrier, the plurality of lenses A carrier protrusion and the spacer protrusion are used to form a space in which the plurality of balls are individually located.
또한, 상기 카메라 모듈은, 상기 스페이서의 내부에 장착되고, 상기 다수의 볼과 마주하는 곳에 위치하는 요크 마그네트; 상기 다수의 볼의 중간에 위치하고, 상기 요크 마그네트와 마주하는 요크;를 더 포함하여 이루어지며, 상기 렌즈 캐리어 돌출부와 상기 스페이서 돌출부를 이용해 상기 다수의 볼이 개별로 내부에 위치하는 공간이 형성되는 것을 특징으로 하고, 상기 요크와 상기 요크 마그네트의 사이에서 발생하는 인력을 이용해 상기 볼의 구속력을 높인다.The camera module may further include a yoke magnet mounted inside the spacer and positioned to face the plurality of balls; Located in the middle of the plurality of balls, the yoke facing the yoke magnet; further comprises, and using the lens carrier protrusion and the spacer protrusion to form a space in which the plurality of balls are individually located inside It is characterized in that, by using the force generated between the yoke and the yoke magnet to increase the restraint of the ball.
그리고 상기 볼은 4개가 형성되고, 상기 4개의 볼은 2개씩 상하로 교차하여 위치하며, 상기 렌즈 캐리어 돌출부는, 상기 상측의 2개의 볼의 사이에서 공간을 분리하는 캐리어 상부 돌출부;와, 상기 상측의 2개의 볼의 하측에 위치하고 상기 하측의 2개의 볼의 일측에 위치하는 제1캐리어 하부 돌출부; 및 제2캐리어 하부 돌출부; 상기 상측의 2개의 볼의 일측과, 하측의 2개의 볼의 상측과 타측에 위치하는 제1캐리어 측부돌출부; 및 제2캐리어 측부돌출부;로 이루어지며, 상기 렌즈 캐리어 돌출부를 이용해 상기 4개의 볼이 개별로 내부에 위치하는 4개의 공간이 형성된다.Four balls are formed, and the four balls are positioned to cross each other up and down, and the lens carrier protrusion is a carrier upper protrusion which separates a space between two balls of the upper side. A first carrier lower protrusion located on a lower side of the two balls of and positioned on one side of the two lower balls; And a second carrier lower protrusion; A first carrier side protrusion located on one side of the two upper balls and the upper and the other sides of the two lower balls; And a second carrier side protrusion, wherein four spaces in which the four balls are individually located are formed using the lens carrier protrusion.
그리고 상기 제1캐리어 측부돌출부 및 제2캐리어 측부돌출부는, 상기 상측의 2개의 볼의 일측과, 하측의 2개의 볼의 상측과 타측에 위치하기 위해 하방을 향해 직선으로 이어지다가 직각으로 두 차례 꺾이는 형상을 갖는다.The first carrier side protrusion and the second carrier side protrusion are straight in a downward direction and bent twice at right angles so as to be located on one side of the two upper balls and the upper side and the other side of the two lower balls. It has a shape.
본 발명은 스페이서와 렌즈 캐리어를 볼 가이드로 활용하여 카메라 모듈의 크기를 최소화하며, 마그네트와 요크의 자성을 이용해 렌즈 캐리어에 회전력을 유도하여 볼을 가이드하여 구속력을 높이기 때문에 렌즈가 광축을 기준으로 상하로 구동시에 볼에 의해 흔들림이 감소되고, 제품의 품질을 향상시키는 효과가 있다.The present invention minimizes the size of the camera module by using the spacer and the lens carrier as a ball guide, and guides the ball to guide the ball by inducing rotational force to the lens carrier using magnets of magnets and yokes to increase the binding force based on the optical axis Shaking is reduced by the ball when the furnace is driven, and there is an effect of improving the quality of the product.
또한, 본 발명은 스페이서와 렌즈 캐리어를 볼 가이드로 활용하여 카메라 모듈의 크기를 최소화하며, 요크 마그네트와 요크의 자성을 이용해 볼을 가이드하여 구속력을 높여 렌즈가 광축 기준으로 상하 구동 시에 볼에 의하여 흔들림이 감소되어 제품의 품질이 향상되는 효과가 있다.In addition, the present invention utilizes the spacer and the lens carrier as a ball guide to minimize the size of the camera module, guide the ball using the magnet of the yoke magnet and yoke to increase the binding force by the ball when the lens is driven up and down based on the optical axis There is an effect of improving the quality of the product is reduced shaking.
도 1은 인용발명을 나타내는 분해도.1 is an exploded view showing the invention cited.
도 2는 본 발명의 제1 실시예에 따른 카메라 모듈의 볼 가이드 구조의 사시도.2 is a perspective view of a ball guide structure of the camera module according to the first embodiment of the present invention.
도 3은 본 발명의 제1 실시예에 따른 카메라 모듈의 볼 가이드 구조의 일방향 분해도.Figure 3 is an exploded view of the ball guide structure of the camera module according to the first embodiment of the present invention.
도 4는 본 발명의 제1 실시예에 따른 카메라 모듈의 볼 가이드 구조의 타방향 분해도.4 is an exploded view in another direction of the ball guide structure of the camera module according to the first embodiment of the present invention.
도 5는 본 발명의 제1 실시예에 따른 카메라 모듈의 볼 가이드 구조의 부분도.5 is a partial view of a ball guide structure of the camera module according to the first embodiment of the present invention.
도 6은 본 발명의 제1 실시예에 따른 카메라 모듈의 볼 가이드 구조의 일방향 절단도.Figure 6 is a one-way cutaway view of the ball guide structure of the camera module according to the first embodiment of the present invention.
도 7은 본 발명의 제1 실시예에 따른 카메라 모듈의 볼 가이드 구조의 구속 구조 및 방향을 나타내는 부분도.Figure 7 is a partial view showing the restraint structure and direction of the ball guide structure of the camera module according to the first embodiment of the present invention.
도 8은 본 발명의 제2 실시예에 따른 카메라 모듈의 볼 가이드 구조의 사시도.8 is a perspective view of a ball guide structure of the camera module according to the second embodiment of the present invention.
도 9 및 도 10은 본 발명의 제2 실시예에 따른 카메라 모듈의 구성을 광축을 따라서 순차적으로 나타내는 볼 가이드 구조의 일방향 분리 사시도.9 and 10 are one-way separation perspective views of the ball guide structure sequentially showing the configuration of the camera module according to the second embodiment of the present invention along the optical axis.
도 11 및 도 12는 본 발명의 제2 실시예에 따른 카메라 모듈의 구성을 광축을 따라서 순차적으로 나타내는 볼 가이드 구조의 타방향 분리 사시도.11 and 12 are different perspective views of a ball guide structure sequentially showing a configuration of a camera module according to a second embodiment of the present invention along an optical axis.
도 13은 본 발명의 제2 실시예에 따른 카메라 모듈의 볼 가이드 구조의 부분도.13 is a partial view of a ball guide structure of the camera module according to the second embodiment of the present invention.
도 14는 본 발명의 제2 실시예에 따른 카메라 모듈의 볼 가이드 구조의 일방향 절단도.14 is a one-way cutaway view of the ball guide structure of the camera module according to the second embodiment of the present invention.
도 15는 본 발명의 제2 실시예에 따른 카메라 모듈의 볼 가이드 구조의 구속 구조 및 방향을 나타내는 타방향 절단도.15 is a cross-sectional view of another direction showing a constraining structure and a direction of a ball guide structure of a camera module according to a second embodiment of the present invention;
제1 First 실시예Example
이하, 첨부된 도면을 참조하여, 본 발명에 따른 제1 실시예를 구체적으로 설명하도록 한다.Hereinafter, with reference to the accompanying drawings, it will be described in detail a first embodiment according to the present invention.
도 2에 도시된 바와 같이, 본 발명의 제1 실시예에 따른 카메라 모듈(1200)의 외형은 커버(1201)와 베이스(1230)의 결합으로 이루어지며, 커버(1201)와 베이스(1230)의 내부의 공간에는 렌즈 캐리어(1220)와 스프링(1230)을 포함한 다수의 부품이 장착된다. 또한, 카메라 모듈(1200)에는 상측에서 하측을 향해 원통형으로 관통된 관통구(1200-1)가 형성되며, 관통구(1200-1)에는 렌즈(미도시)가 위치하게 된다.As shown in FIG. 2, the outer shape of the camera module 1200 according to the first embodiment of the present invention is formed by the combination of the cover 1201 and the base 1230, and the cover 1201 and the base 1230 of the base 1230. The interior space is equipped with a number of components including the lens carrier 1220 and the spring 1230. In addition, a through hole 1200-1 that is cylindrically penetrated from the upper side to the lower side is formed in the camera module 1200, and a lens (not shown) is positioned in the through hole 1200-1.
도 3 및 도 4를 참조하면, 커버(1201)의 하측에는 스페이서(1210)가 위치하며, 스페이서(1210)에는 상부에서 하부를 향해 관통된 공간이 형성되고 이 공간에 렌즈 캐리어(1220)가 위치하여 스페이서(1210)의 내부에서 렌즈 캐리어(1220)가 상하로 이동하며 초점을 조절한다.3 and 4, a spacer 1210 is positioned below the cover 1201, and a space penetrated from the top to the bottom is formed in the spacer 1210, and the lens carrier 1220 is positioned in the space. The lens carrier 1220 moves up and down inside the spacer 1210 to adjust the focus.
스페이서(1210)는 네 개의 모서리를 가지며, 네 개의 모서리 중 두 개의 모서리에는 마그네트(1202)와 AF코일(1203), 요크(1204)가 위치하고, 다른 두 개의 모서리에는 볼(1205)이 위치하게 되며, 마그네트(1202)와 AF코일(1203), 요크(1204) 및 볼(1205)은 스페이서(1210)와 렌즈 캐리어(1220)의 사이에서 위치 고정된다. 즉, 스페이서(1210)와 렌즈 캐리어(1220)에는 마그네트(1202)와 AF코일(1203), 요크(1204) 및 볼(1205)의 장착을 위한 도피부가 각각 형성된다.The spacer 1210 has four corners, and two of the four corners have a magnet 1202, an AF coil 1203, and a yoke 1204, and the other two corners have a ball 1205. The magnet 1202 and the AF coil 1203, the yoke 1204, and the ball 1205 are fixed between the spacer 1210 and the lens carrier 1220. In other words, the spacer 1210 and the lens carrier 1220 are formed with a coating portion for mounting the magnet 1202, the AF coil 1203, the yoke 1204, and the ball 1205, respectively.
스페이서(1210)에서 다수의 볼(1205)이 위치하는 두 개의 모서리에는 볼(1205)과 일부가 맞닿아 볼(1205)의 위치를 제한하는 스페이서 돌출부(1211)와, 후술할 렌즈 캐리어(1220)의 돌출부가 위치하는 스페이서 관통부(1212)가 각각 형성된다.In the spacer 1210, the two corners at which the plurality of balls 1205 are positioned, the spacer protrusion 1211 restricting the position of the ball 1205 by partially contacting the ball 1205 and the lens carrier 1220 to be described later. Spacer through portions 1212 in which the protrusions of the are positioned are respectively formed.
마그네트(1202)는 코너의 형상을 따라 삼각형의 구조로 형성되어 스페이서(1210)의 네 개의 모서리 중 대각으로 마주하는 두 개의 모서리의 하측면에 결합된다. 또한, 렌즈 캐리어(1220)의 네 개의 모서리 중 두 개의 모서리에는 각각의 마그네트(1202)와 마주하도록 두 개의 AF코일(1203)이 장착되고, 각각의 AF코일(1203)의 일측면에 요크(1204)가 장착되며, 요크(1204)는 자성을 가져 마그네트(1202)와 인력을 발생시킨다. Magnet 1202 is formed in a triangular structure along the shape of the corner is coupled to the lower side of the two corners facing diagonally of the four corners of the spacer 1210. In addition, two of the four corners of the lens carrier 1220 are mounted with two AF coils 1203 to face each magnet 1202, and a yoke 1204 on one side of each AF coil 1203. ) Is mounted, and the yoke 1204 has magnetism to generate magnets and attraction force.
렌즈 캐리어(1220)에는 볼(1205)의 구속을 위해 스페이서 돌출부(1211)와 마주하는 지점에 다수의 돌출부가 형성된다. 제1 실시예에서는 각각의 모서리에 2개씩의 볼(1205)을 장착하며, 그 개수는 필요에 따라 조정할 수 있다. 렌즈 캐리어(1220)의 각각의 모서리에는 2개의 볼(1205)이 상하로 교차되도록 위치한다. 따라서 렌즈 캐리어(1220)의 측면에서 상측에는 제1렌즈 캐리어 돌출부(1221)가 형성되어 2개의 볼(1205) 중 상측의 볼(1205)과 일부가 맞닿고, 제1렌즈 캐리어 돌출부(1221)의 우측 끝에는 제2렌즈 캐리어 돌출부(1222)가 형성되어 상측의 볼(1205)과 일부가 맞닿는다. 또한, 상측의 볼(1205)이 위치하는 곳의 하부에는 제3렌즈 캐리어 돌출부(1223)가 형성되어 상측의 볼(1205)과 일부가 맞닿는다. 즉, 상측의 볼(1205)의 측면부에는 제1렌즈 캐리어 돌출부(1221)와 제2렌즈 캐리어 돌출부(1222)가 맞닿고, 하측에는 제3렌즈 캐리어 돌출부(1223)가 맞닿게 된다. 따라서 3개의 렌즈 캐리어 돌출부(1221,1222,1223)와 스페이서(1210)의 스페이서 돌출부(1211)가 형성하는 공간의 내부에 상측 볼(1205)이 구속된다.The lens carrier 1220 is provided with a plurality of protrusions at the point facing the spacer protrusion 1211 to restrain the ball 1205. In the first embodiment, two balls 1205 are mounted at each corner, and the number can be adjusted as necessary. At each corner of the lens carrier 1220, two balls 1205 are positioned to intersect up and down. Accordingly, a first lens carrier protrusion 1221 is formed at an image side of the lens carrier 1220 so that a portion of the two lenses 1205 is in contact with the ball 1205 of the image side, and the first lens carrier protrusion 1221 of the first lens carrier protrusion 1221 is formed. At the right end, a second lens carrier protrusion 1222 is formed to be in contact with the ball 1205 on the image side. In addition, a third lens carrier protrusion 1223 is formed at a lower portion where the image ball 1205 is located to partially contact the image ball 1205. That is, the first lens carrier protrusion 1221 and the second lens carrier protrusion 1222 are in contact with the side surface portion of the image ball 1205, and the third lens carrier protrusion 1223 is in contact with the lower side. Accordingly, the upper ball 1205 is constrained in the space formed by the three lens carrier protrusions 1221, 1222, and 1223 and the spacer protrusion 1211 of the spacer 1210.
하측의 볼(1205)의 경우, 제1렌즈 캐리어 돌출부(1221)가 하측의 볼(1205)의 상부와 맞닿고, 제3렌즈 캐리어 돌출부(1223)와 하측의 볼(1205)의 측면부와 맞닿게 된다. 따라서 제1렌즈 캐리어 돌출부(1221)와 제3렌즈 캐리어 돌출부(1223), 스페이서(1210)의 스페이서 돌출부(1211)가 형성하는 공간의 내부에 하측볼(1205)이 구속된다.In the case of the lower ball 1205, the first lens carrier protrusion 1221 is in contact with the upper part of the lower ball 1205, and is in contact with the third lens carrier protrusion 1223 and the side surface of the lower ball 1205. do. Accordingly, the lower ball 1205 is constrained in a space formed by the first lens carrier protrusion 1221, the third lens carrier protrusion 1223, and the spacer protrusion 1211 of the spacer 1210.
또한, 렌즈 캐리어(1220)에는 코일(1203)과 맞닿는 부분에 코일(1203)의 내부의 빈공간과 결합되는 두 개의 제4렌즈 캐리어 돌출부(1224)가 형성된다.In addition, two fourth lens carrier protrusions 1224 are formed in the lens carrier 1220, which are coupled to the empty space inside the coil 1203, at a portion contacting the coil 1203.
렌즈 캐리어(1220)의 하측에는 스프링(1230)이 위치하여 상기 렌즈 캐리어(1220)가 이동할 때에 탄성을 제공하며, 스프링(1230)은 두 개의 모서리 부분이 연결되도록 형성된 제1스프링(1231)과 나머지 두 개의 모서리에 각각 장착되고 직각으로 꺾여지고 하측으로 연장되어 전류가 인가되는 접촉부(1233)를 가지는 두 개의 제2스프링(1232)으로 이루어진다.A spring 1230 is positioned below the lens carrier 1220 to provide elasticity when the lens carrier 1220 moves, and the spring 1230 is provided with a first spring 1231 formed so that two corner portions thereof are connected to each other. It consists of two second springs 1232 mounted at two corners, each having a contact portion 1233 at a right angle and extending downwards to which a current is applied.
스프링(1230)의 하측에는 베이스(1240)가 위치하고, 베이스(1240)의 상측면의 네 개의 모서리에는 스프링(1230)과 맞닿도록 돌출되는 제1베이스 상부 돌출부(1242a)와 제2베이스 상부 돌출부(1242b)가 형성되며, 제1베이스 상부 돌출부(1242a)는 제1스프링과 일부분이 맞닿으며, 제2베이스 상부 돌출부(1242b)는 제2스프링(1232)와 일부분이 맞닿고 제2스프링(1232)의 접촉부(1233)가 통과되는 관통공이 형성되어 있다. 베이스(1240)의 하측면의 네 개의 모서리에는 각각 하측을 향해 돌출되는 제1베이스 하부 돌출부(1241a)와 제2베이스 하부 돌출부(1241b)가 형성되며, 제1스프링(1231)의 하측에는 제1베이스 하부 돌출부(1241a)가 위치하고, 두 개의 제2스프링(1232)의 하측에는 제2베이스 하부 돌출부(1241b)가 위치하며, 이는 제2베이스 상부 돌출부(1242b)를 통과한 제2스프링(1232)의 접촉부(1233)가 외부로 노출되도록 일부가 도피된 형태를 가진다. A base 1240 is positioned below the spring 1230, and four corners of the upper surface of the base 1240 are provided with a first base upper protrusion 1242a and a second base upper protrusion 12 protruding to abut the spring 1230. 1242b), the first base upper protrusion 1242a partially contacts the first spring, and the second base upper protrusion 1242b partially contacts the second spring 1232 and the second spring 1232 is formed therein. The through hole through which the contact portion 1233 passes through is formed. The first base lower protrusion 1241a and the second base lower protrusion 1241b are formed at four corners of the lower side of the base 1240, respectively, protruding downward, and below the first spring 1231. The base lower protrusion 1241a is positioned, and below the two second springs 1232, the second base lower protrusion 1241b is positioned, which is the second spring 1232 passing through the second base upper protrusion 1242b. The contact portion 1233 of the has a form that is escaped to be exposed to the outside.
도 5를 참조하면, 상측의 볼(1205)과 하측의 볼(1205)이 렌즈 캐리어(1220)의 제1렌즈 캐리어 돌출부(1221)와 제2렌즈 캐리어 돌출부(1222), 제3렌즈 캐리어 돌출부(1223)을 이용해 구속되는 구조를 더욱 상세히 알 수 있으며, 제1렌즈 캐리어 돌출부(1221)와 제2렌즈 캐리어 돌출부(1222), 제3렌즈 캐리어 돌출부(1223) 및 스페이서 돌출부는 볼(1205)의 형상에 맞게 굴곡되는 형태로 돌출될 수 있다.Referring to FIG. 5, the upper ball 1205 and the lower ball 1205 may include a first lens carrier protrusion 1221, a second lens carrier protrusion 1222, and a third lens carrier protrusion of the lens carrier 1220. 1223, the first lens carrier protrusion 1221, the second lens carrier protrusion 1222, the third lens carrier protrusion 1223, and the spacer protrusion may be formed in the shape of the ball 1205. It may protrude in a shape that is curved to fit.
도 6에는 본 발명의 제1 실시예에 따른 카메라 모듈(1200)의 볼(1205) 장착 부분을 따라 대각선으로 절단된 절단도가 나타나 있으며, 다수의 볼(1205)이 렌즈 캐리어(1220)와 스페이서(1210)가 만드는 공간의 내부에 구속되어 있음을 알 수 있다. 즉, 다수의 볼(1205)이 각각의 공간에 개별로 위치함에 따라 제품의 소형화가 가능해진다.FIG. 6 is a cross-sectional view cut along the mounting portion of the ball 1205 of the camera module 1200 according to the first embodiment of the present invention, and a plurality of balls 1205 are arranged in the lens carrier 1220 and the spacer. It can be seen that 1210 is constrained inside the space it creates. That is, as the plurality of balls 1205 are individually positioned in each space, the product can be miniaturized.
도 7에 도시된 바와 같이, AF코일(1203)의 일측면에 장착되는 자성을 가진 요크(1204)는 마그네트(1202)와 인력을 발생시켜 렌즈 캐리어(1220)를 AF코일(1203)과 마그네트(1202)가 가까워지는 방향으로 회전시키고, 이로 인해 렌즈 캐리어(1220)가 스페이서(1210)를 향한 방향으로 회전하여 다수의 볼(1205)이 구속하는 그 구속력이 더욱 높아지게 된다. 따라서, 볼(1205)에 의해 렌즈가 광축을 기준으로 상하 구동 시에 흔들림이 감소하여 제품의 품질이 향상되는 효과가 있다.As shown in FIG. 7, the yoke 1204 having a magnet mounted on one side of the AF coil 1203 generates an attraction force with the magnet 1202 to move the lens carrier 1220 to the AF coil 1203 and the magnet ( 1202 is rotated toward each other, which causes the lens carrier 1220 to rotate in the direction toward the spacer 1210 to further increase the restraint force of the plurality of balls 1205. As a result, the ball 1205 reduces the shake when the lens is vertically driven with respect to the optical axis, thereby improving the quality of the product.
제2 2nd 실시예Example
이하, 첨부된 도면을 참조하여, 본 발명에 따른 제2 실시예를 구체적으로 설명하도록 한다.Hereinafter, with reference to the accompanying drawings, it will be described in detail a second embodiment according to the present invention.
도 8에 도시된 바와 같이, 본 발명에 따른 카메라 모듈(200)의 외형은 스페이서(210)와 베이스(220)의 결합으로 이루어지며, 스페이서(210)와 베이스(220)의 내부에 형성되는 공간에는 렌즈 캐리어(240)와 스프링(230)을 포함한 다수의 부품이 장착되고, 베이스(220)의 하측으로 접촉부(250)의 일부가 노출된다. 또한, 카메라 모듈(200)에는 상측에서 하측을 향해 원통형으로 관통된 관통구(200-1)가 형성되며, 관통구(200-1)에는 렌즈(미도시)가 위치하게 된다.As shown in FIG. 8, the outer shape of the camera module 200 according to the present invention is formed by a combination of the spacer 210 and the base 220, and a space formed inside the spacer 210 and the base 220. A plurality of components, including the lens carrier 240 and the spring 230, are mounted thereon, and a portion of the contact portion 250 is exposed to the lower side of the base 220. In addition, a through hole 200-1 is formed in the camera module 200 through a cylindrical shape from the upper side to the lower side, and a lens (not shown) is positioned in the through hole 200-1.
도 9 내지 도 12를 참조하면, 스페이서(210)는 사각 기둥의 형태를 가지고, 하방이 개방되고 내부에 공간이 형성되며, 상방에서 하방을 향해 다각형의 모양으로 관통된 관통구가 형성된다. 또한, 스페이서(210)의 4개의 측면에는 후술할 베이스(220)의 돌출부와 맞닿는 제1커버 도피부(211)가 형성되고, 4개의 모서리 중 1개의 모서리에 대각선과 평행하게 내부를 향해 돌출된 스페이서 돌출부(212)가 형성되며, 스페이서 돌출부(212)에는 후술할 요크 마그네트(206)를 내부에 장착하기 위한 제2커버 도피부(213)가 형성된다. 9 to 12, the spacer 210 has a form of a square pillar, the bottom of which is opened and a space is formed therein, and a through hole penetrated in a polygonal shape from above to downward is formed. In addition, four side surfaces of the spacer 210 are formed with a first cover cover portion 211 contacting the protrusion of the base 220, which will be described later, and protrudes inward in parallel with a diagonal line at one of the four corners. The spacer protrusion 212 is formed, and the spacer protrusion 212 is formed with a second cover cover portion 213 for mounting the yoke magnet 206 to be described later.
스페이서(210)의 내부에는 스프링(230)이 위치하여 렌즈 캐리어(240)가 광축을 따라 상하로 이동할 때에 탄성을 제공하고, 스프링(230)의 내측에 형성되는 4개의 제1스프링 관통구(231)와 스프링(230)의 외부에 형성되는 4개의 제2스프링 관통구(232)를 이용해 다른 부품과 결합시킨다. A spring 230 is positioned inside the spacer 210 to provide elasticity when the lens carrier 240 moves up and down along the optical axis, and four first spring through holes 231 formed inside the spring 230. ) And four second spring through holes 232 formed on the outside of the spring 230 and the other components.
스프링(230)의 하측에는 렌즈 캐리어(240)가 위치하고, 렌즈 캐리어(240)는 내부에 상방에서 하방을 향해 관통된 원형의 관통구를 가지며 이곳에 렌즈가 고정된다. 렌즈 캐리어(240)는 4개의 모서리를 가지며, 4개 중 3개의 모서리에는 외측면을 향해 돌출된 형태의 캐리어 날개부(242)가 형성된다. 렌즈 캐리어(240)의 상면에는 상기 스프링(230)의 제1스프링 관통구(231)와 결합되는 캐리어 결합돌기(241)가 형성된다. 또한, 캐리어 날개부(242)가 형성되지 않은 나머지 한 개의 모서리에는 다수의 볼(201)이 내부에 포함되는 공간을 형성하기 위한 돌출부가 좌우로 대칭되게 형성되며 그 중심에는 자성을 가진 요크(205)가 위치하기 위해 일부가 도피된 캐리어 도피부(243)가 형성된다. 다수의 볼(201)과 요크(205)가 장착되는 렌즈 캐리어(240)의 일측부는 스페이서(210)의 스페이서 돌출부(212)와 마주하게 되고, 스페이서 돌출부(212)가 다수의 볼(201)과 각각 맞닿아 공간을 제한하게 된다.The lens carrier 240 is positioned below the spring 230, and the lens carrier 240 has a circular through hole penetrating from the top to the bottom thereof, and the lens is fixed thereto. The lens carrier 240 has four corners, and three of four corners are formed with carrier wings 242 protruding toward the outer surface. The upper surface of the lens carrier 240 is formed with a carrier coupling protrusion 241 is coupled to the first spring through hole 231 of the spring 230. In addition, at one corner where the carrier wing portion 242 is not formed, protrusions for forming a space in which the plurality of balls 201 are included are formed symmetrically from side to side, and a yoke 205 having a magnetic portion at the center thereof. The carrier escape portion 243, which is partially escaped, is formed to be located. One side of the lens carrier 240 on which the plurality of balls 201 and the yoke 205 are mounted faces the spacer protrusion 212 of the spacer 210, and the spacer protrusion 212 is connected to the plurality of balls 201. Each touches to limit the space.
렌즈 캐리어(240)의 하측에는 마그네트(202)와 플레이트(203), 코일(204)이 위치하며, 렌즈 캐리어(240)와 베이스(220)의 사이에서 위치 고정된다. 마그네트(202)와 플레이트(203), 코일(204)은 대각으로 마주하는 2개의 모서리에 각각 위치하고, 다른 한 개의 모서리에는 요크 마그네트(206)가 위치한다. 마그네트(202)의 하측에 플레이트(203)가 장착되고 코일(204)은 마그네트(202)와 플레이트(203)를 감싸는 형태를 갖는다. 마그네트(202)와 플레이트(203) 및 코일(204)은 렌즈 캐리어(240)의 측면에 돌출된 세 개의 캐리어 날개부(242) 중 대각으로 마주하는 두 개의 캐리어 날개부(242)의 하측에 위치하고, 스페이서(210)의 제2커버 도피부(213)에 장착되는 요크 마그네트(206)는, 렌즈 캐리어(240)의 캐리어 도피부(243)에 장착되는 요크(205)와 마주하는 곳에 위치하여 요크 마그네트(206)와 요크(205) 간의 인력을 발생시킨다.A magnet 202, a plate 203, and a coil 204 are positioned below the lens carrier 240, and are fixed between the lens carrier 240 and the base 220. The magnet 202, the plate 203, and the coil 204 are respectively located at two diagonally opposite corners, and the yoke magnet 206 is positioned at the other corner. The plate 203 is mounted to the lower side of the magnet 202 and the coil 204 has a shape surrounding the magnet 202 and the plate 203. The magnet 202, the plate 203, and the coil 204 are located below two carrier wings 242 facing diagonally out of three carrier wings 242 protruding on the side of the lens carrier 240. The yoke magnet 206 mounted on the second cover cover 213 of the spacer 210 is positioned at a position facing the yoke 205 mounted on the carrier cover 243 of the lens carrier 240. The attraction between the magnet 206 and the yoke 205 is generated.
마그네트(202)와 플레이트(203) 및 코일(204)의 하측에는 내부로 전기를 인가하기 위해 일부가 외부로 노출되는 접촉부(250)가 위치하고, 접촉부(250)는 제1접촉부(251), 제2접촉부(252) 그리고 제3접촉부(253)로 나뉘어 진다. 제2접촉부(252)와 제3접촉부(253)에는 하측을 향해 직각으로 꺾여져 일부가 카메라 모듈(200)의 외부로 노출되는 접촉부 꺾임부(255)가 형성되며, 접촉부(250)의 장착을 위해 6개의 접촉부 관통구(254)가 형성된다.Below the magnet 202, the plate 203, and the coil 204, a contact part 250 is partially exposed to the outside to apply electricity to the inside, and the contact part 250 includes the first contact part 251, and the first contact part 251. The second contact portion 252 and the third contact portion 253 is divided into. The second contact portion 252 and the third contact portion 253 are bent at a right angle to the lower side is formed with a contact portion bent portion 255, part of which is exposed to the outside of the camera module 200, the mounting of the contact portion 250 Six contact through holes 254 are formed for this purpose.
베이스(220)는 내부에 상방에서 하방을 향해 관통된 관통구를 가지고, 사각기둥의 형태를 가지며, 하측면의 네 개의 모서리에서 하방을 향해 돌출된 두 개의 제1베이스 하부 돌출부(221)와 두 개의 제2베이스 하부 돌출부(222)를 가지며, 제2베이스 하부 돌출부에는 상기 접촉부(250)의 접촉부 꺾임부(255)가 외부로 노출되기 위해 도피된 공간이 마련된다. 베이스(220)의 상면의 네 개의 변에는 각각 상측을 향해 돌출된 네 개의 베이스 상부 돌출부(223)가 형성된다. 베이스 상부 돌출부(223)는 사각형의 모양으로 상부를 향해 1차로 돌출되고 1차로 돌출된 부분의 상면에서 일부가 상부로 2차로 돌출되는 형태를 가진다. 베이스 상부 돌출부(223)의 2차로 돌출된 부분의 상면에는 각각 제1베이스 결합돌기(224)가 형성되어 스프링(230)의 제2스프링 관통구(232)와 결합되며, 베이스(220)의 상면에는 다수의 제2베이스 결합돌기(225)가 형성되어 접촉부(250)의 접촉부 관통구(254)와 결합된다. 베이스 상부 돌출부(223)는 스페이서(210)의 제1커버 도피부(211)와 맞닿는다.The base 220 has a through hole penetrating from the top to the bottom therein, has a shape of a square pillar, and has two first base lower protrusions 221 protruding downward from four corners of the bottom surface. The second base lower protrusion 222 is provided, and the second base lower protrusion is provided with a space escaped so that the contact portion bent portion 255 of the contact part 250 is exposed to the outside. Four base upper protrusions 223 protruding upward on four sides of the upper surface of the base 220 are formed. The base upper protrusion 223 has a shape of protruding firstly upward in the shape of a quadrangle and partially protruding upwardly from the upper surface of the first protruding portion. First base coupling protrusions 224 are formed on the upper surfaces of the second protruding portions of the base upper protrusion 223, respectively, and are coupled to the second spring through holes 232 of the spring 230, and the upper surface of the base 220. A plurality of second base coupling protrusions 225 are formed therein to be coupled to the contact portion through hole 254 of the contact portion 250. The base upper protrusion 223 contacts the first cover cover 211 of the spacer 210.
도 13에는 렌즈 캐리어(240)의 4개의 볼(201)이 장착되는 부분이 자세히 나와있다. 4개의 볼(201)은 렌즈 캐리어(240)의 측면에 위치하여 렌즈 캐리어(240)의 측면과 스페이서(210)의 측면의 사이에 위치하며, 2개는 측면 중 상측에 2개는 측면 중 하측에 각각 상하로 교차하도록 위치한다. 렌즈 캐리어(240)에는 렌즈 캐리어 돌출부가 형성되고, 렌즈 캐리어 돌출부는 캐리어 상부 돌출부(244), 제1캐리어 측부돌출부(245), 제2캐리어 측부돌출부(246), 제1캐리어 하부돌출부(247) 및 제2캐리어 하부돌출부(248)로 구분된다.13 shows in detail a portion where the four balls 201 of the lens carrier 240 are mounted. Four balls 201 are positioned on the side of the lens carrier 240 and located between the side of the lens carrier 240 and the side of the spacer 210, two of which are on the upper side and two of the sides on the lower side. Are positioned to cross each other up and down. A lens carrier protrusion is formed in the lens carrier 240, and the lens carrier protrusion is a carrier upper protrusion 244, a first carrier side protrusion 245, a second carrier side protrusion 246, and a first carrier bottom protrusion 247. And a second carrier lower protrusion 248.
구체적으로 렌즈 캐리어(240)에는 상측의 2개의 볼(201)의 사이에서 공간을 분리하는 캐리어 상부 돌출부(244)가 형성되며, 캐리어 상부 돌출부(244)에 캐리어 도피부(243)가 형성되어 요크(205)가 장착된다. 상측의 2개의 볼(201)의 하부에는 각각 제1캐리어 하부 돌출부(247)와 제2캐리어 하부 돌출부(248)가 형성되며, 제1캐리어 하부 돌출부(247)와 제2캐리어 하부 돌출부(248)의 측면에는 하측에 장착되는 2개의 볼(201)이 각각 위치한다. 또한, 상측의 2개의 볼(201)과 하측의 2개의 볼(201)의 양쪽 측면에는 볼(201)이 내부에 위치하는 공간을 제공하기 위한 제1캐리어 측부돌출부(245) 및 제2캐리어 측부돌출부(246)가 형성된다. 제1캐리어 측부돌출부(245) 및 제2캐리어 측부돌출부(246)는 상측 2개의 볼(201)의 일측면 뿐만 아니라 하측 2개의 볼(201)의 상면 및 일측면을 모두 제한하기 위해 하방을 향해 직선으로 이어지다가 직각으로 두 차례 꺾이는 형상을 가진다. 따라서, 상측의 2개의 볼(201)은 캐리어 상부 돌출부(244)와 제1캐리어 측부돌출부(245) 및 제2캐리어 측부돌출부(246)를 이용해 측면부로의 이동이 제한되고 제1캐리어 하부 돌출부(247)와 제2캐리어 하부 돌출부(248)를 이용해 하측으로의 이동이 제한된다. 또한, 하측의 2개의 볼(201)은 제1캐리어 하부 돌출부(247)와 제2캐리어 하부 돌출부(248)를 이용해 일측면으로의 이동 제한되고, 제1캐리어 측부돌출부(245) 및 제2캐리어 측부돌출부(246)를 이용해 상측면으로의 이동 및 일측면으로의 이동이 제한된다. 즉, 캐리어 상부 돌출부(244)와 제1캐리어 측부돌출부(245) 및 제2캐리어 측부돌출부(246), 제1캐리어 하부 돌출부(247)와 제2캐리어 하부 돌출부(248)를 이용해 4개의 볼(201)이 내부에 각각 위치하도록 4개의 공간이 마련된다. 따라서 4개의 볼(201)이 개별로 위치하기 때문에 제품의 크기가 소형화되는 효과가 있다.In detail, a carrier upper protrusion 244 is formed on the lens carrier 240 to separate a space between two upper balls 201, and a carrier cover 243 is formed on the carrier upper protrusion 244 to yoke. 205 is mounted. The first carrier lower protrusion 247 and the second carrier lower protrusion 248 are formed at the lower portions of the two upper balls 201, respectively, and the first carrier lower protrusion 247 and the second carrier lower protrusion 248 are formed. On the side of the two balls 201 mounted on the lower side are located respectively. In addition, the first carrier side protrusion 245 and the second carrier side part for providing a space in which the ball 201 is located on both side surfaces of the two upper balls 201 and the lower two balls 201. A protrusion 246 is formed. The first carrier side protrusion 245 and the second carrier side protrusion 246 are directed downward to limit both the upper and one sides of the lower two balls 201 as well as the one side of the two upper balls 201. It is straight and then bent twice at right angles. Accordingly, the upper two balls 201 are limited to the side surface by using the carrier upper protrusion 244, the first carrier side protrusion 245 and the second carrier side protrusion 246, and the first carrier lower protrusion ( 247 and the second carrier lower protrusion 248 are restricted to move downward. In addition, the lower two balls 201 are restricted to move to one side by using the first carrier lower protrusion 247 and the second carrier lower protrusion 248, and the first carrier side protrusion 245 and the second carrier are restricted. Using the side protrusion 246, movement to the upper side and movement to one side are restricted. That is, four balls (4) are formed using the carrier upper protrusion 244, the first carrier side protrusion 245, the second carrier side protrusion 246, the first carrier lower protrusion 247, and the second carrier lower protrusion 248. Four spaces are provided so that 201) is located inside each. Therefore, since the four balls 201 are located separately, there is an effect that the size of the product is reduced.
도 14 및 도 15를 참조하면, 요크 마그네트(206)와 요크(205)는 마주하는 곳에 위치하여 요크 마그네트(206)와 요크(205)간의 인력이 발생하여 렌즈 캐리어(240)를 스페이서(210)를 향한 방향으로 이동시킨다. 따라서 다수의 볼(201)은 스페이서(210)의 스페이서 돌출부(212)와 맞닿아 이동이 제한되게 되어 다수의 볼(201)을 구속하는 구속력이 더욱 높아지게 된다. 따라서, 렌즈가 광축을 기준으로 상하 구동시에 다수의 볼(201)에 의하여 흔들림이 감소되고, 제품의 품질이 향상되는 효과가 있다.Referring to FIGS. 14 and 15, the yoke magnet 206 and the yoke 205 are positioned to face each other, and the attraction between the yoke magnet 206 and the yoke 205 is generated, so that the lens carrier 240 may be separated from the spacer 210. Move in the direction of. Therefore, the plurality of balls 201 are in contact with the spacer protrusion 212 of the spacer 210 to be restricted in movement, thereby increasing the restraining force of restraining the plurality of balls 201. Therefore, the shake is reduced by the plurality of balls 201 when the lens is vertically driven based on the optical axis, and the quality of the product is improved.
제2 실시예에서는 4개의 볼(201)과 2개의 마그네트(202), 플레이트(203), 코일(204) 그리고 1개의 요크(205)와 요크 마그네트(206)를 제안하였으나 필요에 따라 그 개수 및 위치를 조절할 수 있으며, 각각 부품의 결합을 위한 다수의 결합 돌기 및 관통구의 개수 및 위치 또한 필요에 따라 조절할 수 있다. 또한, 각 부품의 형상 및 결합 구조는 필요에 따라 변경할 수 있다.In the second embodiment, four balls 201, two magnets 202, a plate 203, a coil 204, and one yoke 205 and a yoke magnet 206 are proposed. The position can be adjusted, and the number and position of the plurality of engaging projections and through holes for the coupling of the components can also be adjusted as necessary. In addition, the shape and coupling structure of each part can be changed as needed.
본 발명인 카메라 모듈의 볼 가이드 구조는 전술한 실시예에 국한하지 않고, 본 발명의 청구범위에 기재된 기술 사상이 허용되는 범위 내에서 다양하게 변형하여 실시할 수 있다.The ball guide structure of the camera module of the present invention is not limited to the above-described embodiment, and may be variously modified and implemented within the scope of the technical idea described in the claims of the present invention.
본 발명은 휴대단말기 등에 장착되는 소형 카메라에서 자동으로 초점을 조절하기 위해 렌즈가 내장된 렌즈 캐리어의 광축 방향 이동을 원활하게 하는 카메라 모듈의 볼 가이드 구조에 관한 것으로, 스페이서와 렌즈 캐리어를 볼 가이드로 활용하여 카메라 모듈의 크기를 최소화할 수 있고, 마그네트와 요크의 자성을 이용해 렌즈 캐리어에 회전력을 유도하여 볼을 가이드하여 구속력을 높이기 때문에 렌즈가 광축을 기준으로 상하로 구동시에 볼에 의해 흔들림이 감소되고, 제품의 품질을 향상시킬 수 있다.The present invention relates to a ball guide structure of a camera module for smoothly moving in the optical axis direction of a lens carrier with a built-in lens for automatically adjusting the focus in a small camera mounted on a portable terminal, etc. The size of the camera module can be minimized and the magnetism of the magnet and yoke can be used to guide the ball by inducing rotational force to the lens carrier to increase the binding force, thus reducing the shaking by the ball when the lens is driven up and down based on the optical axis. And the quality of a product can be improved.

Claims (7)

  1. 카메라 모듈의 볼 가이드 구조에 있어서,In the ball guide structure of the camera module,
    상기 카메라 모듈은,The camera module,
    상부에서 하부를 향해 관통된 공간이 형성되는 스페이서;A spacer formed with a space penetrated from the top to the bottom;
    상기 스페이서의 관통된 공간에 위치하고, 내부에 렌즈를 장착하는 렌즈 캐리어;A lens carrier positioned in a through space of the spacer and mounting a lens therein;
    상기 렌즈 캐리어와 상기 스페이서의 사이에 위치하는 다수의 볼;을 포함하여 이루어지며,And a plurality of balls positioned between the lens carrier and the spacer.
    상기 렌즈 캐리어에는 상기 볼을 구속하기 위해 상기 볼을 향한 방향으로 돌출된 다수의 렌즈 캐리어 돌출부;가 형성되고, A plurality of lens carrier protrusions protruding in the direction toward the ball so as to restrain the ball;
    상기 스페이서에는 상기 볼을 구속하기 위해 상기 볼을 향한 방향으로 돌출된 스페이서 돌출부;가 형성되며,Spacer protrusions protruding in the direction toward the ball to restrain the ball is formed;
    상기 렌즈 캐리어 돌출부와 상기 스페이서 돌출부를 이용해 상기 볼을 내부에 구속하는 공간이 형성되는 것을 특징으로 하는 카메라 모듈의 볼 가이드 구조.Ball guide structure of the camera module, characterized in that the space is formed to restrain the ball inside the lens carrier protrusion and the spacer protrusion.
  2. 청구항 1에 있어서,The method according to claim 1,
    상기 스페이서 및 상기 렌즈 캐리어는 각각 다수의 모서리를 가지며,The spacer and the lens carrier each have a plurality of corners,
    상기 스페이서의 다수의 모서리 중 일부의 모서리에 장착되는 마그네트;A magnet mounted to an edge of some of the plurality of edges of the spacer;
    상기 마그네트와 마주하도록 상기 렌즈 캐리어의 일부의 모서리에 각각 장착되는 AF코일;AF coils mounted to corners of a portion of the lens carrier so as to face the magnet;
    상기 AF코일의 일측면에 위치하도록 상기 렌즈 캐리어에 장착되며, 자성을 가진 요크;를 더 포함하여 이루어지며,And mounted to the lens carrier to be positioned on one side of the AF coil and having a magnetic yoke;
    상기 요크와 상기 마그네트의 사이에서 발생하는 인력을 이용해 상기 렌즈 캐리어를 회전시켜 상기 볼의 구속력을 높이는 것을 특징으로 하는 카메라 모듈의 볼 가이드 구조.Ball guide structure of the camera module, characterized in that for increasing the restraint of the ball by rotating the lens carrier using the attraction force generated between the yoke and the magnet.
  3. 청구항 1 에 있어서,The method according to claim 1,
    상기 카메라 모듈은,The camera module,
    상기 스페이서의 대각으로 마주하는 모서리에 장착되는 마그네트;A magnet mounted on a diagonally opposite corner of the spacer;
    상기 마그네트와 마주하도록 상기 렌즈 캐리어의 모서리에 장착되는 AF코일;An AF coil mounted on an edge of the lens carrier so as to face the magnet;
    상기 AF코일의 일측면에 위치하도록 상기 렌즈 캐리어에 장착되며, 자성을 가진 요크;를 포함하여 이루어지며,And mounted to the lens carrier to be positioned on one side of the AF coil and having a magnetic yoke;
    상기 요크와 상기 마그네트의 사이에서 발생하는 인력을 이용해 상기 렌즈 캐리어를 회전시켜 상기 볼의 구속력을 높이는 것을 특징으로 하는 카메라 모듈의 볼 가이드 구조.Ball guide structure of the camera module, characterized in that for increasing the restraint of the ball by rotating the lens carrier using the attraction force generated between the yoke and the magnet.
  4. 청구항 1 에 있어서,The method according to claim 1,
    상기 다수의 볼은 상기 스페이서와 상기 렌즈 캐리어의 대각으로 마주하는 모서리에 각각 장착되고, 상기 다수의 볼은 상하로 교차하도록 위치하는 것을 특징으로 하며,The plurality of balls are mounted at the corners facing each other diagonally between the spacer and the lens carrier, wherein the plurality of balls are positioned to cross up and down,
    상기 스페이서에서 상기 볼이 위치하는 모서리에는, 상기 다수의 볼과 일부가 맞닿는 스페이서 돌출부;가 형성되고, A spacer protrusion having a portion in contact with the plurality of balls is formed at an edge at which the ball is positioned in the spacer;
    상기 렌즈 캐리어에서 상기 볼이 위치하는 두 모서리에는, 상기 다수의 볼과 일부가 맞닿는 다수의 렌즈 캐리어 돌출부;가 형성되며,Two lens carrier protrusions are formed at two corners at which the balls are positioned in the lens carrier, the parts of which are in contact with the plurality of balls.
    상기 다수의 렌즈 캐리어 돌출부와 상기 스페이서 돌출부를 이용해 상기 다수의 볼이 개별로 위치하는 공간을 형성하는 것을 특징으로 하는 카메라 모듈의 볼 가이드 구조.And a plurality of lens carrier protrusions and the spacer protrusions to form a space in which the plurality of balls are individually located.
  5. 청구항 1에 있어서,The method according to claim 1,
    상기 카메라 모듈은,The camera module,
    상기 스페이서의 내부에 장착되고, 상기 다수의 볼과 마주하는 곳에 위치하는 요크 마그네트;A yoke magnet mounted in the spacer and positioned to face the plurality of balls;
    상기 다수의 볼의 중간에 위치하고, 상기 요크 마그네트와 마주하는 요크;를 더 포함하여 이루어지며,Located in the middle of the plurality of balls, the yoke facing the yoke magnet; further comprises,
    상기 렌즈 캐리어 돌출부와 상기 스페이서 돌출부를 이용해 상기 다수의 볼이 개별로 내부에 위치하는 공간이 형성되는 것을 특징으로 하고,The lens carrier protrusion and the spacer protrusion is characterized in that a space in which the plurality of balls are individually located is formed inside,
    상기 요크와 상기 요크 마그네트의 사이에서 발생하는 인력을 이용해 상기 볼의 구속력을 높이는 것을 특징으로 하는 카메라 모듈의 볼 가이드 구조.Ball guide structure of the camera module, characterized in that to increase the binding force of the ball by the attraction force generated between the yoke and the yoke magnet.
  6. 청구항 5에 있어서,The method according to claim 5,
    상기 볼은 4개가 형성되고, 상기 4개의 볼은 2개씩 상하로 교차하여 위치하며,Four balls are formed, and the four balls are positioned up and down two by two,
    상기 렌즈 캐리어 돌출부는,The lens carrier protrusion,
    상기 상측의 2개의 볼의 사이에서 공간을 분리하는 캐리어 상부 돌출부;와,A carrier upper protrusion separating a space between the two upper balls; and
    상기 상측의 2개의 볼의 하측에 위치하고 상기 하측의 2개의 볼의 일측에 위치하는 제1캐리어 하부 돌출부; 및 제2캐리어 하부 돌출부; A first carrier lower protrusion located on a lower side of the two upper balls and located on one side of the two lower balls; And a second carrier lower protrusion;
    상기 상측의 2개의 볼의 일측과, 하측의 2개의 볼의 상측과 타측에 위치하는 제1캐리어 측부돌출부; 및 제2캐리어 측부돌출부;로 이루어지며,A first carrier side protrusion located on one side of the two upper balls and the upper and the other sides of the two lower balls; And a second carrier side protrusion;
    상기 렌즈 캐리어 돌출부를 이용해 상기 4개의 볼이 개별로 내부에 위치하는 4개의 공간이 형성되는 것을 특징으로 하는 카메라 모듈의 볼 가이드 구조.Ball guide structure of the camera module, characterized in that the four spaces are formed by using the lens carrier protrusions are located inside the four balls individually.
  7. 청구항 6에 있어서,The method according to claim 6,
    상기 제1캐리어 측부돌출부 및 제2캐리어 측부돌출부는,The first carrier side protrusion and the second carrier side protrusion,
    상기 상측의 2개의 볼의 일측과, 하측의 2개의 볼의 상측과 타측에 위치하기 위해 하방을 향해 직선으로 이어지다가 직각으로 두 차례 꺾이는 형상을 가지는 것을 특징으로 하는 카메라 모듈의 볼 가이드 구조.The ball guide structure of the camera module, characterized in that it has a shape that is connected in a straight line downward and bent twice at right angles to be located on one side of the two upper balls and the upper and the other of the two lower balls.
PCT/KR2017/005142 2016-06-22 2017-05-18 Ball guide structure of camera module WO2017222188A1 (en)

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