WO2018225948A1 - Dispositif de caméra ayant une structure de ressort à lames intégrée facile à assembler - Google Patents

Dispositif de caméra ayant une structure de ressort à lames intégrée facile à assembler Download PDF

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Publication number
WO2018225948A1
WO2018225948A1 PCT/KR2018/004988 KR2018004988W WO2018225948A1 WO 2018225948 A1 WO2018225948 A1 WO 2018225948A1 KR 2018004988 W KR2018004988 W KR 2018004988W WO 2018225948 A1 WO2018225948 A1 WO 2018225948A1
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WO
WIPO (PCT)
Prior art keywords
elastic
moving
easy
camera device
spring structure
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Application number
PCT/KR2018/004988
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English (en)
Korean (ko)
Inventor
서종식
김민기
정상원
Original Assignee
(주)알비케이이엠디
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Application filed by (주)알비케이이엠디 filed Critical (주)알비케이이엠디
Publication of WO2018225948A1 publication Critical patent/WO2018225948A1/fr

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    • 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
    • H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026—Details of the structure or mounting of specific components
    • H04M1/0264—Details of the structure or mounting of specific components for a camera module assembly
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/57—Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices

Definitions

  • the present invention is a camera device having an integrated leaf spring structure that is easy to assemble, and more particularly, the integrated leaf spring that is applied to a camera module installed in a portable terminal such as a smart phone to adjust the focal length of the camera lens. It relates to a camera device having a structure.
  • the camera module installed in the portable terminal photographs a desired subject through a lens, and has a plurality of lenses for focusing or zooming.
  • the camera device applied to the camera module adjusts the focus by adjusting the distance between the lens and the image sensor.
  • an actuator as a driving source for moving the focusing lens in the optical axis direction according to the position of the subject is required.
  • Such an actuator uses a step motor, a piezoelectric element, a VCM, or the like.
  • FIG. 1 is a cross-sectional view schematically showing the structure of a conventional camera actuator.
  • the conventional camera actuator 1 has a lens barrel 2 as a lens assembly in which a plurality of focusing lenses are assembled, and a carrier 3 coupled by screwing on the outer circumferential surface of the lens barrel 2 at its center. Is formed.
  • the lens barrel (2) is provided at the upper end of the magnet (4) and the magnet (4) for generating a magnetic force to the outer periphery of the hollow carrier (3) fastened therein to change and control the flow direction of the magnetic force line
  • a yoke 5 and a top plate 6 provided at the lower end of the magnet 4 to support the magnets and to change the direction of the flow of the magnetic lines of force, and the outer periphery of the lower end of the carrier 3 and the top plate 6.
  • the drive coils 7 are wound between the inner circumferential surfaces of. Accordingly, the lens barrel 2 uses Lorentz force generated in the vertical direction of the current and the magnetic field, that is, in the optical axis direction, by the induced electromotive force caused by the interaction of the driving coil 7 within the magnetic force generated by the magnet 4. And a carrier 3 which accommodates it in the optical axis direction.
  • the upper cover 8 that provides the upper appearance of the camera actuator 1 at the upper end of the yoke 5, and the lower cover at which the upper plate 6 is seated and fixed at the lower end of the top plate 6 ( 9) is formed, and at the bottom of the carrier 3 and the lower cover 9, a base 10 is provided which provides the bottom appearance of the camera actuator 1.
  • the upper spring 11 is seated on the upper end of the carrier 3 so as to return to the original position, and the position of the carrier 3 is also returned to the lower end of the carrier 3.
  • the lower spring 12 is coupled to return to press the upper and lower ends of the carrier 3, respectively.
  • the inner peripheral portion is configured such that its position or shape can be changed according to the linear movement of the carrier 3, while the outer peripheral portion of the upper spring 11 Is interposed between the upper cover 8 of the upper end and the yoke 5 of the lower end, and the outer periphery of the lower spring 12 also closely adheres between the lower cover 9 of the upper end and the base 10 of the lower end, It is interposed and is comprised so that the position or form may be fixed.
  • the conventional camera actuator is limited in size and thin since the upper spring 11 and the lower spring 12 are respectively coupled to the upper and lower portions of the carrier 3.
  • the camera actuator becomes thinner and thinner, the camera actuator is made of smaller parts assembled, so it is not easy to assemble each part to complete the camera actuator.
  • assembling the upper spring 11 and the lower spring 12, respectively, is a very difficult and cumbersome task.
  • a plurality of points of the inner circumference must be fixed to the carrier 3 by soldering, bonding, or the like, and a plurality of points of the outer circumference of the upper circumference 11 are connected between the yoke 5 and the upper cover 8. Should be fixed by soldering, bonding, etc.
  • the spring fixing operation has a very small space for assembling the spring, as the camera actuator is made smaller and thinner, assembling the spring becomes more difficult and the failure rate is increased.
  • Patent Document 1 Republic of Korea Patent Publication No. 10-2010-0068701 (2010.06.24.)
  • Patent Document 2 Republic of Korea Patent Publication No. 10-2009-0095454 (2009.09.09.)
  • Patent Document 3 Republic of Korea Patent Publication No. 10-1073442 (2011.10.17.)
  • the present invention is to solve the above-mentioned problems, it is easy to assemble by applying the integrated plate spring structure, it is advantageous to reduce the overall size to a small size, has a low occurrence rate and high productivity of the integrated plate spring structure easy to assemble
  • the object is to provide a camera device.
  • a camera device having an integrated leaf spring structure that is easy to assemble comprises: a moving part moving in parallel with an optical axis of the lens together with a lens; An elastic member for elastically supporting the moving part; And a fixing part protruding from the first mounting part and mounting the elastic member on the first mounting part, wherein the elastic member includes a first elastic part mounted on the first mounting part, and the first elastic part.
  • the second elastic part and the third elastic part which are formed to extend from each of the moving parts located on both sides of the moving part and pressurize the moving part in a direction facing each other.
  • Protrusions are formed on both sides of the moving part, protrusions are formed on the protrusions, and assembly holes into which the assembly protrusions are inserted are formed at the second and third elastic parts, respectively.
  • the distance A between the second elastic part and the third elastic part is smaller than the distance B between the two protruding parts, and the second elastic part and the third elastic part are elastically deformable in a direction away from each other.
  • An elastic deformation sphere is formed in each of the second elastic part and the third elastic part so that the second elastic part and the third elastic part connected to the moving part are elastically deformed when the moving part moves in a direction parallel to the optical axis.
  • the camera device having an integrated leaf spring structure that is easy to assemble according to the present invention is easily assembled by being assembled at a time so that the plate springs elastically supporting the moving parts are integrally formed on both sides of the moving parts, and thus the overall size of the camera device is improved. It is advantageous to miniaturize thin film, low defect rate and high productivity.
  • FIG. 1 is a cross-sectional view schematically showing the structure of a conventional camera actuator.
  • Figure 2 is a perspective view of a camera device having an integrated leaf spring structure that is easy to assemble according to an embodiment of the present invention.
  • Figure 3 is an exploded perspective view of a camera device having an integrated leaf spring structure easy to assemble according to an embodiment of the present invention.
  • Figure 4 is a view showing a separate moving portion and the elastic member according to an embodiment of the present invention.
  • Camera assembly having an integrated leaf spring structure that is easy to assemble according to an embodiment of the present invention, as shown in Figures 2 to 4, the fixing part 100, the coil part 200, the moving part 300, the magnet It consists of 400 and the elastic member 500.
  • the fixing unit 100 has a first mounting unit 110 and a second mounting unit 121 protrudingly formed between the first mounting unit 110 and the second mounting unit 121.
  • the moving unit 300 is disposed.
  • the elastic member 500 is mounted on the first mounting part 110, and a mounting piece is mounted on the second mounting part 121.
  • the coil unit 200 is mounted to the mounting piece and is connected to a power source (not shown) so that a current flows to move the moving unit 300.
  • the moving unit 300 is mounted with one or more lenses (not shown) to move in parallel with the optical axis of the lens. 4, protrusions 310 are protruded on both sides of the moving part 300, and assembly protrusions 311 protrude from the protrusions 310.
  • an insertion groove (not shown) is formed in the moving part 300 in the direction toward the coil part 200. Two magnets 400 are inserted into the insertion grooves.
  • the magnet 400 is inserted into the insertion groove to face the coil part 200.
  • the magnet 400 forms a magnetic field around the coil part 200, and when a current flows in the coil part 200, an electromagnetic force acts on the magnet 400 by electromagnetic interaction to move the moving part 300. Done.
  • the elastic member 500 elastically supports the moving part 300.
  • the elastic member 500 may be divided into a first elastic part 510, a second elastic part 520, and a third elastic part 530.
  • the second elastic part 520 and The second elastic portions 520 extend from the first elastic portions 510, respectively.
  • the first elastic part 510, the second elastic part 520, and the third elastic part 530 are integrally formed.
  • the first elastic part 510 is mounted to the first mounting part 110.
  • the second elastic part 520 and the third elastic part 530 protrude in the direction of the second mounting part 121 and thus the first mounting part (
  • the moving parts 300 are positioned on both sides of the moving part 300 with respect to the moving part 300 disposed between the 110 and the second mounting part 121.
  • assembly holes 540 into which the assembly protrusions 311 are inserted are formed in the second elastic parts 520 and the third elastic parts 530, respectively. Accordingly, the assembly protrusion 311 is inserted into the assembly hole 540 formed in the second elastic portion 520 and the third elastic portion 530, respectively, and the second elastic portion 520 and the third elastic portion 530 are inserted therein.
  • the aforementioned elastic member 500 has a distance A between the second elastic part 520 and the third elastic part 530 so that the moving part 300 can be easily coupled to the moving part 300. It is preferable to make it narrower than (B).
  • the second elastic portion 520 and the third elastic portion 530 is a structure capable of elastic deformation in a direction away from each other, when combined with the moving portion 300, the second elastic portion 520 and the third elastic portion 530. Opening the assembly protrusion 311 is inserted into the assembly hole 540.
  • the distance A between the second elastic part 520 and the third elastic part 530 is smaller than the distance B between the two protruding parts 310, whereby the second elastic part 520 and the third elastic part 520 are formed.
  • the elastic part 530 presses the moving part 300 to maintain the coupled state of the moving part 300 and the elastic member 500.
  • the distance A between the second elastic portion 520 and the third elastic portion 530 and the distance B between the two protrusions 310 may be the same.
  • the elastic deformation sphere 550 is formed in each of the second elastic portion 520 and the third elastic portion 530. As such, since the elastic deformation sphere 550 is formed in the second elastic part 520 and the third elastic part 530, the moving part 300 is connected to the moving part 300 when the moving part 300 moves in a direction parallel to the optical axis.
  • the elastic part 520 and the third elastic part 530 may be elastically deformed.
  • the elastic member 500 as described above is a leaf spring formed in a "c" shape surrounding the fixing part 100 and the moving part 300 from the side, if the elastic deformation sphere 550 is not formed as in this embodiment
  • the moving part 300 moves in a direction parallel to the optical axis, since the moving part 300 is hardly deformed according to the movement of the moving part 300, the natural moving of the moving part 300 is impossible.
  • a horizontal wire spring for supporting the moving unit 300 in the form of a cantilever, in this case, at least four horizontal wire springs are required, and both ends of the four horizontal wire springs are moved with the fixing part 100. Assembling is inconvenient and cumbersome because each part 300 must be fixed.
  • the elastic member 500 of the present invention is formed integrally and can be easily combined with the moving part 300 at once.
  • the first elastic part 510 is fixed to the first mounting part 110 and between the second elastic part 520 and the third elastic part 530 so that the assembly protrusion 311 is inserted into the assembly hole 540.
  • the second elastic part 520 and the third elastic part 530 press the moving part 300 in a direction facing each other to maintain a coupled state.
  • the end portion of the second elastic portion 520 and the third elastic portion 530 can be completely fixed to the protrusion 310.
  • the camera device having an integrated leaf spring structure that is easy to assemble according to the present invention is not limited to the above-described embodiments, and may be modified in various ways within the scope of the technical idea of the present invention.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Studio Devices (AREA)

Abstract

La présente invention concerne un dispositif de caméra ayant une structure de ressort à lames intégrée facile à assembler et, plus spécifiquement, un dispositif de caméra ayant une structure de ressort à lames intégrée facile à assembler appliqué à un module de caméra qui est installé dans un terminal portatif tel qu'un téléphone intelligent, et permettant le réglage de la distance focale d'une lentille de caméra. Un dispositif de caméra ayant une structure de ressort à lames intégrée facile à assembler, selon la présente invention, comprend : une partie de déplacement qui se déplace avec une lentille dans la direction parallèle à l'axe optique de la lentille ; un élément élastique conçu pour supporter élastiquement la partie de déplacement ; et une partie de fixation ayant une première partie de montage faisant saillie et l'élément élastique monté sur la première partie de montage. L'élément élastique comprend : une première partie élastique montée sur la première partie de montage ; et une deuxième partie élastique et une troisième partie élastique qui s'étendent respectivement à partir de la première partie élastique, qui sont positionnées des deux côtés de la partie de déplacement avec la partie de déplacement dans le centre, et qui pressent la partie de déplacement dans la direction faisant face à chacun.
PCT/KR2018/004988 2017-06-09 2018-04-30 Dispositif de caméra ayant une structure de ressort à lames intégrée facile à assembler WO2018225948A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020170072451A KR101896991B1 (ko) 2017-06-09 2017-06-09 조립이 용이한 일체형 판스프링 구조를 갖는 카메라 장치
KR10-2017-0072451 2017-06-09

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WO2018225948A1 true WO2018225948A1 (fr) 2018-12-13

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0894904A (ja) * 1994-09-22 1996-04-12 Canon Inc レンズ駆動装置、光学装置およびカメラ
KR20090107330A (ko) * 2008-04-08 2009-10-13 주식회사 하이소닉 카메라용 자동초점 구동장치
KR20100093263A (ko) * 2009-02-16 2010-08-25 삼성전자주식회사 카메라 렌즈 어셈블리
KR20170021147A (ko) * 2015-08-17 2017-02-27 엘지전자 주식회사 이동 단말기
KR101724660B1 (ko) * 2016-09-30 2017-04-10 엘지이노텍 주식회사 보이스 코일 모터, 카메라 모듈 및 광학 기기

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009210897A (ja) 2008-03-05 2009-09-17 Mitsumi Electric Co Ltd 板バネ、レンズ駆動装置および板バネの製造方法
JP2009210055A (ja) 2008-03-05 2009-09-17 Mitsumi Electric Co Ltd 板バネおよびレンズ駆動装置
KR20100068701A (ko) 2008-12-15 2010-06-24 (주)차바이오앤디오스텍 렌즈 액츄에이터용 탄성 부재 및 이를 포함하는 렌즈 액츄에이터

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0894904A (ja) * 1994-09-22 1996-04-12 Canon Inc レンズ駆動装置、光学装置およびカメラ
KR20090107330A (ko) * 2008-04-08 2009-10-13 주식회사 하이소닉 카메라용 자동초점 구동장치
KR20100093263A (ko) * 2009-02-16 2010-08-25 삼성전자주식회사 카메라 렌즈 어셈블리
KR20170021147A (ko) * 2015-08-17 2017-02-27 엘지전자 주식회사 이동 단말기
KR101724660B1 (ko) * 2016-09-30 2017-04-10 엘지이노텍 주식회사 보이스 코일 모터, 카메라 모듈 및 광학 기기

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