WO2018227589A1 - 一种多轴音圈马达 - Google Patents

一种多轴音圈马达 Download PDF

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Publication number
WO2018227589A1
WO2018227589A1 PCT/CN2017/088728 CN2017088728W WO2018227589A1 WO 2018227589 A1 WO2018227589 A1 WO 2018227589A1 CN 2017088728 W CN2017088728 W CN 2017088728W WO 2018227589 A1 WO2018227589 A1 WO 2018227589A1
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WO
WIPO (PCT)
Prior art keywords
shake
magnet
spring
coil
focus
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Application number
PCT/CN2017/088728
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English (en)
French (fr)
Inventor
刘志远
洪航庆
Original Assignee
东莞佩斯讯光电技术有限公司
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Application filed by 东莞佩斯讯光电技术有限公司 filed Critical 东莞佩斯讯光电技术有限公司
Priority to PCT/CN2017/088728 priority Critical patent/WO2018227589A1/zh
Publication of WO2018227589A1 publication Critical patent/WO2018227589A1/zh

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Classifications

    • 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
    • G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
    • G03B13/32—Means for focusing
    • G03B13/34—Power focusing
    • G03B13/36—Autofocus systems
    • 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
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B5/00—Adjustment of optical system relative to image or object surface other than for focusing
    • G03B5/06—Swinging lens about normal to the optical axis
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules

Definitions

  • the invention belongs to the field of image driving equipment, and in particular relates to a multi-axis voice coil motor.
  • the optical image stabilization motor has a complicated structure and cannot simultaneously use two motors with optical image stabilization on the dual camera, that is, the dual-camera dual optical anti-shake module cannot be realized.
  • the current optical image stabilization motor moves in three dimensions, Z-direction autofocus and translation in the X/Y plane or deflection around the X/Y axis.
  • the translation in the X/Y plane is not absolutely uniform due to the magnetic field distribution, and it is easy to cause the optical axis to deviate from the Z-axis.
  • the deflection around the X/Y axis also causes deflection along the Z-axis direction.
  • the assembly error in the assembly process of the module also causes a certain angle between the lens and the image sensor, resulting in the image of the camera module being unclear at the four corners and the edge, and the imaging effect is not good.
  • the technical problem to be solved by the present invention is to provide a multi-axis voice coil motor, which aims to achieve focus, anti-shake and optical axis correction functions for the lens, and solve the magnetic interference problem of the current dual-camera optical anti-shake motor.
  • a multi-axis voice coil motor including a metal yoke, an upper cover terminal, a lower cover terminal, an upper spring, a lower spring, a lens mount for loading a lens, and a bracket; At least two anti-shake coils are disposed on a periphery of the lens holder, a plane of the anti-shake coil is parallel to an axis of the lens mount, and a periphery of the bracket is provided with at least two focus coils.
  • a plane in which the winding of the focusing coil is located is parallel to an axis of the lens holder;
  • the lens holder is movably embedded on the bracket, and an anti-shake magnet is disposed on an outer side of each of the anti-shake coils, and
  • the anti-shake magnet is adjacent to one side of the anti-shake coil, and has N poles and S poles distributed along the direction perpendicular to the axis of the lens mount axis, and the N pole and the S pole of the anti-shake magnet respectively correspond to the anti-shake coil a left and right sides;
  • a focus magnet is disposed on an outer side of each of the focus coils, and a side of the focus magnet adjacent to the focus coil has an N pole distributed up and down along a direction parallel to the axis of the lens mount S pole, the N pole and the S pole of the focus magnet respectively correspond to upper and lower sides of the focus coil;
  • the upper spring is disposed on the upper cover terminal, and the lower spring is disposed on the lower cover terminal The
  • the anti-shake magnet includes two left anti-shake magnets and a right anti-shake magnet arranged side by side in a direction perpendicular to the axis of the lens holder, and the left anti-shake magnet and the right anti-shake magnet are respectively adjacent to the anti-shake coil a left vertical side and a right vertical side, and a side of the left anti-shake magnet adjacent to the anti-shake coil is opposite to a polarity of a side of the right anti-shake magnet close to the anti-shake coil;
  • the focus magnet includes two edges parallel to the lens An upper focus magnet and a lower focus magnet stacked vertically above the axis, wherein the upper focus magnet and the lower focus magnet are respectively adjacent to an upper lateral edge and a lower lateral edge of the focus coil, and the upper focus magnet is adjacent to the focus coil The polarity of the lower focus magnet near the side of the focus coil is reversed.
  • At least two first protrusions are disposed on a circumference of the lens holder, and the anti-shake coil is wound on the first protrusion; a bottom of the bracket faces the same along an axial direction of the bracket At least two baffles are extended on the side to form a limiting portion, and a second protrusion is disposed on an outer side of each of the baffles, the focusing coil is wound on the second protrusion, and the lens holder is movable
  • the grounding portion is embedded on the limiting portion of the bracket, and the anti-shake coil is correspondingly located between two adjacent focusing coils.
  • the upper cover terminal and the lower cover terminal are both square frames, and the number of the anti-shake magnet, the focus magnet, the anti-shake coil, and the focus coil are four, and the four anti-shake magnets are respectively fixed in the The four corners of the upper and lower terminals are respectively fixed on the four sides of the upper and lower terminals.
  • the four anti-shake coils are respectively connected to the upper spring, and the four focus coils are respectively connected to the lower spring.
  • the two diagonal coils of the four anti-shake coils are connected to the upper spring in parallel or in series with each other, and the four focus coils are connected in parallel with each other and connected to the lower spring.
  • the upper spring includes four upper spring independent units including an upper spring inner arm, an intermediate arm and an upper spring outer arm connected to each other, the upper spring inner arm of the four independent units,
  • the intermediate arm and the upper spring outer arm are respectively arranged as an upper spring inner ring, an upper spring intermediate ring and an upper spring outer ring, and the upper spring inner ring is fitted and fixed on the upper end of the lens holder, and the upper spring intermediate ring is attached
  • the upper outer end of the bracket is fixedly fixed to the upper cover terminal.
  • the lower spring includes four lower spring independent units, and the lower spring independent unit includes a lower spring inner arm and a lower spring outer arm, and a spring is connected between the lower spring inner arm and the lower spring outer arm
  • the lower inner arm, the spring wire and the lower spring outer arm of the four lower spring independent units are respectively arranged as a lower spring inner ring, a lower spring intermediate ring and a lower spring outer ring, and the lower spring inner ring is fitted
  • the lower spring intermediate ring is fixedly fixed to the lower end of the bracket, and the lower spring outer ring is fixedly fixed to the lower cover terminal.
  • the anti-shake magnet and the focus magnet are a planar two-pole magnetic injection magnet; or a magnet group composed of two magnets, and the two magnets have opposite polarities on the same side.
  • the bottom of the upper cover terminal has a plurality of pins
  • a top of the lower cover terminal is provided with a plurality of through holes at a position corresponding to the pins, and the upper cover terminal is fastened to the lower cover terminal And the plurality of pins respectively pass through the plurality of through holes.
  • the present invention has the beneficial effects of: a multi-axis voice coil motor of the present invention, wherein the anti-shake coil and the focus coil are respectively wound around the outer edge of the lens holder and the bracket, and the lens is a seat is movably embedded on the bracket, and then an anti-shake magnet and a focus magnet are respectively disposed outside the anti-shake coil and the focus coil, so that the anti-shake magnet and the focus magnet are close to the anti-shake coil and the focus coil.
  • the N pole and the S pole are simultaneously present on one side, and the N pole and the S pole of the anti-shake magnet are distributed left and right in a direction perpendicular to the axis of the lens mount, and the N pole and the S pole of the focus magnet are parallel to the axis of the lens mount. distributed. Therefore, when the anti-shake coil is energized, the anti-shake magnet generates a force perpendicular to the axis of the lens mount for the lens mount and the anti-shake coil, so that the lens mount is perpendicular to the plane of the lens mount axis.
  • the internal horizontal movement enables optical image stabilization.
  • the focusing magnet When the focusing coil is energized, the focusing magnet generates a force parallel to the axis of the lens holder for the bracket and the focusing coil, so that the bracket drives the lens holder to move up and down along the axis direction of the lens holder to realize auto focusing; When the angles of the two focus coils are different, the bracket will move up and down along the axis of the lens mount, and deflection will be generated to adjust the angle between the lens and the image sensor to achieve optical axis correction.
  • the anti-shake magnet and the focus magnet in the motor are fixed, and the moving parts are only the lens holder, the bracket and the coil, wherein the lens holder and the bracket can be made of plastic, and there is no motor between the two camera modules.
  • the magnetic interference problem, and the metal yoke can shield the external magnetic field and prevent external magnetic interference.
  • the motor realizes the focus, anti-shake and optical axis correction functions of the motor through a new magnetic circuit. It is not only small in size, low in cost, but also capable of preventing magnetic interference.
  • the production process is relatively simple and suitable for mass production.
  • FIG. 1 is a schematic overall structural view of a multi-axis voice coil motor according to an embodiment of the present invention
  • Figure 2 is a schematic exploded view of Figure 1;
  • Figure 3 is a schematic structural view of the lens holder and the anti-shake coil of Figure 2;
  • FIG. 4 is a schematic view showing the magnetic circuit structure of the anti-shake coil and the anti-shake magnet of FIG. 2;
  • Figure 5 is a schematic structural view of the bracket and the focusing coil of Figure 2;
  • FIG. 6 is a schematic view showing the structure of a magnetic circuit of the focus coil and the focus magnet of FIG. 2;
  • Figure 7 is a schematic structural view of the overall magnetic circuit of Figure 2.
  • Figure 8 is a schematic structural view of the upper spring of Figure 2;
  • Figure 9 is a schematic structural view of the lower spring of Figure 2.
  • FIG. 10 is a schematic structural view of the lower cover terminal of FIG. 2.
  • FIG. 10 is a schematic structural view of the lower cover terminal of FIG. 2.
  • a multi-axis voice coil motor 100 includes a metal yoke 1, an upper cover terminal 2, an upper spring 3, and a lens mount 4 for loading a lens. Bracket 5, lower spring 6, and lower cover terminal 7.
  • the upper spring 3 is disposed on the upper cover terminal 2
  • the lower spring 6 is disposed on the lower cover terminal 7, and the upper cover terminal 2 is buckled on the lower cover terminal 7, the metal
  • the yoke 1 is disposed outside the upper cover terminal 2, and the lens mount 4 and the bracket 5 are respectively connected to the upper spring 3 and the lower spring 6, and are suspended by the upper spring 3 and the lower spring 6 In the metal yoke 1, the circuit is turned on by the upper spring 3 and the lower spring 6.
  • At least two first protrusions 41 are disposed on the periphery of the lens holder 4 , and each of the first protrusions 41 is wound around the first protrusion 41 .
  • the coil 42 is shaken, and the plane in which the winding of the anti-shake coil 42 is located is parallel to the axis of the lens holder 4.
  • An anti-shake magnet 8 is disposed on an outer side of each of the anti-shake coils 42, and an anti-vibration magnet 8 is adjacent to one side of the anti-shake coil 42 and has an N-pole distributed along a direction perpendicular to the axis of the lens holder 4
  • the S pole, the N pole and the S pole of the anti-shake magnet 42 respectively correspond to the left and right sides of the anti-shake coil 42.
  • the anti-shake magnet 8 includes two left anti-shake magnets 81 and a right anti-shake magnet 82 arranged side by side in a direction perpendicular to the axial direction of the lens holder 4.
  • the left anti-shake magnet 81 and the right anti-shake magnet 82 are respectively close to the left vertical side and the right vertical side of the anti-shake coil 42, and the left anti-shake magnet 81 is adjacent to the side of the anti-shake coil 42 and the right anti-shake
  • the magnet 82 is opposite in polarity to one side of the anti-shake coil 42; the anti-shake magnet 8 may also be a magnet with a planar two-pole magnetization.
  • the anti-shake magnet 8 produces a vertical to the lens mount 4 and the anti-shake coil 42.
  • the force acting in the axial direction of the lens holder 4 causes the lens holder 4 to move horizontally in a plane perpendicular to the axis of the lens holder 4, thereby realizing an optical image stabilization function.
  • the bottom of the bracket 5 extends at least two baffles 51 toward the same side along the axial direction of the bracket 5 to form a limiting portion, and the lens mount 4 is movably It is embedded on the limiting portion of the bracket 5.
  • a second protrusion 52 is disposed on the outer side of each of the baffles 51.
  • Each of the second protrusions 52 is correspondingly wound with a focusing coil 53.
  • the plane of the winding of the focusing coil 53 is parallel to the plane.
  • the axis of the lens mount 4, the anti-shake coil 42 is correspondingly located between two adjacent focus coils 53.
  • a focus magnet 9 is disposed on an outer side of each of the focus coils 53.
  • the focus magnet 9 is adjacent to one side of the focus coil 53 and has N poles and S poles distributed up and down in a direction parallel to the axis of the lens mount 4 .
  • the N pole and the S pole of the focus magnet 9 respectively correspond to upper and lower sides of the focus coil 53.
  • the focus magnet 9 includes two upper focus magnets 91 and a lower focus magnet 92 stacked up and down in a direction parallel to the axis of the lens holder 4.
  • the upper focus magnet 91 and the lower focus magnet 92 are respectively adjacent to the upper horizontal side and the lower horizontal side of the focus coil 53 , and the upper focus magnet 91 is close to the focus coil 53 and the lower focus magnet 92 is close to the focus coil 53 .
  • the polarity of one side is opposite; the focus magnet 9 can also be a magnet with a planar two-pole magnetic injection.
  • the upper cover terminal 2 and the lower cover terminal 7 are both square frames, the anti-shake magnet 8, the focus magnet 9, the anti-shake coil 42 and the focus coil 53.
  • the number is four, and the four anti-shake magnets 8 are respectively fixed at the four corners of the upper and lower terminals, and the four focus magnets 9 are respectively fixed on the four sides of the upper and lower terminals. Since the anti-shake magnet 8 and the focus magnet 9 are both fixed, the moving parts are only the lens mount 4, the bracket 5 and the respective coils, wherein the lens mount 4 and the bracket 5 can be made of plastic, in the dual camera module. There is no magnetic interference problem of the motor, and the metal yoke 1 can shield the external magnetic field from external magnetic interference.
  • the bottom of the upper cover terminal 2 has a plurality of pins 21, and a top portion of the lower cover terminal 7 is provided with a plurality of through holes 71 at positions corresponding to the pins 21, and the upper cover terminal 2 is fastened under the cover The terminal 7 is covered, and the plurality of pins 21 pass through the plurality of through holes 71, respectively.
  • the lower cover terminal 7 also has a plurality of pins 72 through which the respective coils can be turned on.
  • the four anti-shake coils 42 may be respectively connected to the upper spring 3 to individually control the movement of the coil, or the two coils of the four anti-shake coils 42 may be diagonally opposite.
  • the upper springs 3 are connected to each other in parallel or in series with each other.
  • the four focus coils 53 may be respectively connected to the lower spring 6 to individually control the movement of the coils, or the four focus coils 53 may be connected in parallel with each other and connected to the lower spring 6.
  • the upper spring 3 includes four upper spring independent units 31 including an upper spring inner arm 311, an intermediate arm 312 and an upper spring outer arm 313 which are connected to each other.
  • the upper spring inner arm 311, the middle arm 312 and the upper spring outer arm 313 of the four independent units 31 are respectively arranged as an upper spring inner ring, an upper spring intermediate ring and an upper spring outer ring.
  • the upper spring inner ring is fixedly fixed to the upper end of the lens holder 4, the upper spring intermediate ring is fixedly fixed to the upper end of the bracket 5, and the upper spring outer ring is fixedly fixed to the upper cover terminal. 2 on.
  • the lower spring 6 includes four lower spring independent units 61 including a lower spring inner arm 611 and a lower spring outer arm 612, the lower spring inner arm 611 and the lower spring A spring wire 613 is connected between the outer arms 612.
  • the lower spring inner arm 611, the spring wire 613 and the lower spring outer arm 612 of the four lower spring independent units 61 are respectively defined as a lower spring inner ring, a lower spring intermediate ring and a lower spring outer ring, the lower spring inner ring
  • the lower spring intermediate ring is attached and fixed to the lower end of the bracket 5, and the lower spring outer ring is fixedly attached to the lower cover terminal 7.
  • the lens is carried on the lens mount 4, and the power is turned on by the pin 21 and the pin 72.
  • the anti-shake coil 42 When the anti-shake coil 42 is energized, the anti-shake magnet 8 generates a force perpendicular to the axial direction of the lens mount 4 to the lens mount 4 and the anti-shake coil 42 so that the lens mount 4 is perpendicular to the lens mount.
  • the plane in which the 4 axis is located moves horizontally to achieve optical image stabilization.
  • the focus coil 53 is energized, the focus magnet 9 generates a force parallel to the axial direction of the lens mount 4 to the bracket 5 and the focus coil 53, so that the bracket 5 drives the lens mount 4 up and down along the axial direction of the lens mount 4.
  • the bracket 5 will move up and down along the axis of the lens mount 4, and deflection will be generated to adjust the lens and the image sensor.
  • the anti-shake magnet 8 and the focus magnet 9 in the motor 100 are fixed, and the moving parts are only the lens holder 4, the bracket 5 and the respective coils, wherein the lens holder 4 and the bracket 5 can be made of plastic, in the dual camera.
  • the metal yoke 1 can shield the external magnetic field and prevent external magnetic interference.
  • the multi-axis voice coil motor 100 provided by the embodiment of the present invention realizes the focus, optical image stabilization and optical axis correction functions of the motor 100 by using a completely new magnetic circuit, which is not only small in size, low in cost, but also capable of Preventing magnetic interference, the production process is relatively simple and suitable for mass production.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
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  • Signal Processing (AREA)
  • Adjustment Of Camera Lenses (AREA)
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Abstract

本发明适用于摄像驱动设备领域，提供了一种多轴音圈马达，包括金属磁轭、上盖端子、下盖端子、上弹簧、下弹簧、镜头座以及支架，镜头座上设置有至少两个防抖线圈，每一个防抖线圈的外侧设有防抖磁铁，防抖磁铁靠近防抖线圈的一面同时存在左右分布的N极和S极；支架上设有至少两个对焦线圈，每一个对焦线圈的外侧设有对焦磁铁，对焦磁铁靠近对焦线圈的一面同时存在上下分布的N极和S极；上、下弹簧分别设置在上、下盖端子上，且上盖端子扣盖在下盖端子上，镜头座和支架分别与上、下弹簧连接，防抖磁铁和对焦磁铁均固定在上、下盖端子之间。该马达通过全新的磁路实现马达的对焦、光学防抖和光轴矫正功能，不仅体积小，而且不会产生磁干扰。

Description

一种多轴音圈马达 技术领域
本发明属于摄像驱动设备领域，尤其涉及一种多轴音圈马达。
背景技术
手机摄像头像素一直在升级，现已达到2000万像素，功能要求更加多样化。目前，高端手机已经具备了光学防抖的功能，其中市场上以TDK、MITSUMI和ALPS已经生产出带OIS功能的音圈马达。
然而，目前光学防抖马达由于其本身的设计，结构复杂且不能在双摄像头上同时采用两颗具备光学防抖功能的马达，即不能实现双摄双光学防抖模组。目前的光学防抖马达的运动为三个维度，分别为Z向的自动对焦和在X/Y平面内的平移或绕着X/Y轴的偏转。但是在X/Y平面内的平移由于磁场分布不是绝对均匀，容易产生光轴偏离Z轴的现象，绕X/Y轴的偏转同时也会带来沿着Z轴方向的偏转。而且，在模组组装的过程中的装配误差也会引起镜头与图像传感器产生一定的夹角，导致摄像头模组的图像在四角及边缘处不清晰，成像效果不佳。
此外，马达内运动部分有磁铁，非常容易受外磁场干扰，所以在双摄上，无论是一颗OIS马达匹配一颗AF马达或者是两颗OIS马达，装配的距离很近的情况下，OIS马达的功能都会受到影响，不能实现光学防抖的功能，而且运动部件重量较重，使得马达的功耗较高。
 技术问题
本发明所要解决的技术问题为提供一种多轴音圈马达，旨在实现对镜头的对焦、防抖以及光轴矫正功能，并解决目前双摄像光学防抖马达的磁干扰问题。
技术解决方案
为解决上述技术问题，本发明是这样实现的，一种多轴音圈马达，包括金属磁轭、上盖端子、下盖端子、上弹簧、下弹簧、用于装载镜头的镜头座以及支架；所述镜头座的周缘上设置有至少两个防抖线圈，所述防抖线圈的绕线所在的平面平行于所述镜头座的轴线，所述支架的周缘设置有至少两个对焦线圈，所述对焦线圈的绕线所在的平面平行于所述镜头座的轴线；所述镜头座可移动地嵌置在所述支架上，每一个防抖线圈的外侧对应设置有防抖磁铁，且所述防抖磁铁靠近所述防抖线圈的一面同时存在沿垂直于所述镜头座轴线方向左右分布的N极和S极，所述防抖磁铁的N极和S极分别对应所述防抖线圈的左右两侧；每一个所述对焦线圈的外侧对应设置有对焦磁铁，所述对焦磁铁靠近所述对焦线圈的一面同时存在沿平行于所述镜头座轴线方向上下分布的N极和S极，所述对焦磁铁的N极和S极分别对应所述对焦线圈的上下两侧；所述上弹簧设置在所述上盖端子上，所述下弹簧设置在所述下盖端子上，所述上盖端子扣盖在所述下盖端子上，所述金属磁轭罩设在所述上盖端子外侧，所述镜头座和所述支架分别与所述上弹簧和下弹簧连接，并通过所述上弹簧和下弹簧悬挂在所述金属磁轭内，且所述防抖磁铁和对焦磁铁均固定在所述上盖端子与下盖端子之间。
进一步地，所述防抖磁铁包括两个沿垂直于镜头座轴线方向左右并排设置的左防抖磁铁以及右防抖磁铁，所述左防抖磁铁与右防抖磁铁分别靠近所述防抖线圈的左竖边以及右竖边，并且，所述左防抖磁铁靠近防抖线圈的一面与右防抖磁铁靠近防抖线圈的一面的极性相反；所述对焦磁铁包括两个沿平行于镜头座轴线方向上下堆叠的上对焦磁铁以及下对焦磁铁，所述上对焦磁铁与下对焦磁铁分别靠近所述对焦线圈的上横边以及下横边，并且，所述上对焦磁铁靠近对焦线圈一面与下对焦磁铁铁靠近对焦线圈的一面的极性相反。
进一步地，所述镜头座的周缘上设有至少两个第一凸起，所述防抖线圈绕置在所述第一凸起上；所述支架的底部沿所述支架的轴线方向朝同一侧延伸出至少两块挡板，形成限位部，每一块挡板的外侧均设有一个第二凸起，所述对焦线圈绕置在所述第二凸起上，所述镜头座可移动地嵌置在所述支架的限位部上，且所述防抖线圈相应地位于相邻两个对焦线圈之间。
进一步地，所述上盖端子与下盖端子均为方形框架，所述防抖磁铁、对焦磁铁、防抖线圈以及对焦线圈的数量均为四个，所述四个防抖磁铁分别固定在所述上、下端子的四角，所述四个对焦磁铁分别固定在所述上、下端子的四个侧面上。
进一步地，所述四个防抖线圈分别与所述上弹簧连接，所述四个对焦线圈分别与所述下弹簧连接。
进一步地，所述四个防抖线圈中对角的两个线圈相互并联或相互串联后分别与所述上弹簧连接，所述四个对焦线圈相互并联后与所述下弹簧连接。
进一步地，所述上弹簧包括四个上弹簧独立单元，所述上弹簧独立单元包括相互连接的上弹簧内臂、中间臂和上弹簧外臂，所述四个独立单元的上弹簧内臂、中间臂和上弹簧外臂分别围设成上弹簧内圈、上弹簧中间圈以及上弹簧外圈，所述上弹簧内圈贴合固定在所述镜头座的上端，所述上弹簧中间圈贴合固定在所述支架的上端，所述上弹簧外圈贴合固定在所述上盖端子上。
进一步地，所述下弹簧包括四个下弹簧独立单元，所述下弹簧独立单元包括下弹簧内臂以及下弹簧外臂，所述下弹簧内臂与所述下弹簧外臂之间连接有弹簧丝，所述四个下弹簧独立单元的下弹簧内臂、弹簧丝和下弹簧外臂分别围设成下弹簧内圈、下弹簧中间圈和下弹簧外圈，所述下弹簧内圈贴合固定在所述镜头座的下端，所述下弹簧中间圈贴合固定在所述支架的下端，所述下弹簧外圈贴合固定在所述下盖端子上。
进一步地，所述防抖磁铁和对焦磁铁为一块平面两极注磁磁铁;或者由两块磁铁组成的磁铁组，且两块磁铁同侧的极性相反。
进一步地，所述上盖端子的底部具有若干插脚，所述下盖端子的顶部与所述插脚相对应的位置处开设有若干通孔，所述上盖端子扣合在所述下盖端子上，且所述若干插脚分别穿过所述若干通孔。
 有益效果
本发明与现有技术相比，有益效果在于：本发明的一种多轴音圈马达，其通过将防抖线圈和对焦线圈分别绕置在镜头座和支架的外缘，并将所述镜头座可移动地嵌置在所述支架上，然后在所述防抖线圈和对焦线圈的外侧分别设置防抖磁铁以及对焦磁铁，使得所述防抖磁铁和对焦磁铁靠近防抖线圈和对焦线圈的一侧同时存在N极和S极，且防抖磁铁的N极和S极沿垂直于所述镜头座轴线方向左右分布，对焦磁铁的N极和S极沿平行于所述镜头座轴线方向上下分布。因此，当所述防抖线圈通电时，所述防抖磁铁对所述镜头座以及防抖线圈产生垂直于镜头座轴线方向的作用力，使所述镜头座在垂直于镜头座轴线所在的平面内水平移动，从而实现光学防抖功能。当所述对焦线圈通电时，所述对焦磁铁对所述支架以及对焦线圈产生平行于镜头座轴线方向的作用力，使支架带动镜头座沿镜头座的轴线方向上下移动，实现自动对焦；当对角的两个对焦线圈所产生的力大小不一样时，会使支架沿镜头座轴线方向上下移动的同时，还会产生偏转，以调整镜头与图像传感器之间的夹角，实现光轴矫正的功能。此外，该马达中的防抖磁铁和对焦磁铁均固定不动，运动部件仅为镜头座、支架以及线圈，其中，镜头座和支架可采用塑料制作，在双摄像头模组中不存在马达之间的磁干扰问题，而且金属磁轭能够屏蔽外界磁场，防止外界的磁干扰。该马达通过全新的磁路实现了马达的对焦、防抖和光轴矫正功能，不仅体积小、成本低，而且能够防止磁干扰，生产工艺较为简单，适于大批量生产。
 附图说明
图1是本发明实施例提供的一种多轴音圈马达的整体结构示意图；
图2是图1的分解结构示意图；
图3是图2中镜头座和防抖线圈的结构示意图；
图4是图2中防抖线圈与防抖磁铁的磁路结构示意图；
图5是图2中支架和对焦线圈的结构示意图；
图6是图2中对焦线圈与对焦磁铁的磁路结构示意图；
图7是图2中的整体磁路的结构示意图；
图8是图2中上弹簧的结构示意图；
图9是图2中下弹簧的结构示意图；
图10是图2中下盖端子的结构示意图。
 本发明的实施方式
为了使本发明的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本发明进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。
如图1和图2所示，为本发明实施例提供的一种多轴音圈马达100，其包括金属磁轭1、上盖端子2、上弹簧3、用于装载镜头的镜头座4、支架5、下弹簧6、下盖端子7。所述上弹簧3设置在所述上盖端子2上，所述下弹簧6设置在所述下盖端子7上，所述上盖端子2扣盖在所述下盖端子7上，所述金属磁轭1罩设在所述上盖端子2外侧，所述镜头座4和所述支架5分别与所述上弹簧3和下弹簧6连接，并通过所述上弹簧3和下弹簧6悬挂在所述金属磁轭1内，通过所述上弹簧3和下弹簧6接通电路。
具体的，请继续参照图3、图4和图7，所述镜头座4的周缘上设有至少两个第一凸起41，每一个所述的第一凸起41上均绕置有防抖线圈42，且所述防抖线圈42的绕线所在的平面平行于所述镜头座4的轴线。每一个防抖线圈42的外侧对应设置有防抖磁铁8，且所述防抖磁铁8靠近所述防抖线圈42的一面同时存在沿垂直于所述镜头座4轴线方向左右分布的N极和S极，所述防抖磁铁42的N极和S极分别对应所述防抖线圈42的左右两侧。
在本发明实施例中，所述防抖磁铁8包括两个沿垂直于镜头座4轴线方向左右并排设置的左防抖磁铁81以及右防抖磁铁82。所述左防抖磁铁81与右防抖磁铁82分别靠近所述防抖线圈42的左竖边以及右竖边，并且，所述左防抖磁铁81靠近防抖线圈42的一面与右防抖磁铁82靠近防抖线圈42的一面的极性相反；所述防抖磁铁8也可以是一块平面两极注磁的磁铁。图4和图7中的箭头指向即为防抖线圈42的绕向，因此，当所述防抖线圈42通电时，所述防抖磁铁8对所述镜头座4以及防抖线圈42产生垂直于镜头座4轴线方向的作用力，使所述镜头座4在垂直于镜头座4轴线所在的平面内水平移动，从而实现光学防抖功能。
继续参照图5、图6和图7，所述支架5的底部沿所述支架5的轴线方向朝同一侧延伸出至少两块挡板51，形成限位部，所述镜头座4可移动地嵌置在所述支架5的限位部上。每一块挡板51的外侧均设有一个第二凸起52，每一个所述第二凸起52上对应绕置有对焦线圈53，所述对焦线圈53的绕线所在的平面平行于所述镜头座4的轴线，所述防抖线圈42相应地位于相邻两个对焦线圈53之间。每一个所述对焦线圈53的外侧对应设置有对焦磁铁9，所述对焦磁铁9靠近所述对焦线圈53的一面同时存在沿平行于所述镜头座4轴线方向上下分布的N极和S极，所述对焦磁铁9的N极和S极分别对应所述对焦线圈53的上下两侧。
在本发明实施例中，所述对焦磁铁9包括两个沿平行于镜头座4轴线方向上下堆叠的上对焦磁铁91以及下对焦磁铁92。所述上对焦磁铁91与下对焦磁铁92分别靠近所述对焦线圈53的上横边以及下横边，并且，所述上对焦磁铁91靠近对焦线圈53一面与下对焦磁铁92靠近对焦线圈53的一面的极性相反；所述对焦磁铁9也可以是一块平面两极注磁的磁铁。图6和图7中的箭头指向即为对焦线圈53的绕向，因此，当所述对焦线圈53通电时，所述对焦磁铁9对所述支架5以及对焦线圈53产生平行于镜头座4轴线方向的作用力，使支架5带动镜头座4沿镜头座的轴线方向上下移动，实现自动对焦；当对角的两个对焦线圈53所产生的力大小不一样时，会使支架5沿镜头座轴线方向上下移动的同时，还会产生偏转，以调整镜头与图像传感器之间的夹角，实现光轴矫正的功能。
参照图2和图10，在本发明实施例中，所述上盖端子2与下盖端子7均为方形框架，所述防抖磁铁8、对焦磁铁9、防抖线圈42以及对焦线圈53的数量均为四个，所述四个防抖磁铁8分别固定在所述上、下端子的四角，所述四个对焦磁铁9分别固定在所述上、下端子的四个侧面上。由于防抖磁铁8和对焦磁铁9均固定不动，因此，运动的部件仅为镜头座4、支架5以及各个线圈，其中，镜头座4和支架5可采用塑料制作，在双摄像头模组中不存在马达的磁干扰问题，而且金属磁轭1能够屏蔽外界磁场，防止外界的磁干扰。
所述上盖端子2的底部具有若干插脚21，所述下盖端子7的顶部与所述插脚21相对应的位置处开设有若干通孔71，所述上盖端子2扣合在所述下盖端子7上，且所述若干插脚21分别穿过所述若干通孔71。同时，所述下盖端子7上也具有若干插脚72，通过所述插脚21和插脚72可接通各个线圈。在本发明实施例中，所述四个防抖线圈42可分别与所述上弹簧3连接，从而单独控制线圈的运动，也可以将所述四个防抖线圈42中对角的两个线圈相互并联或相互串联后分别与所述上弹簧3连接。同理，所述四个对焦线圈53可分别与所述下弹簧6连接，从而单独控制线圈的运动，也可以将所述四个对焦线圈53相互并联后与所述下弹簧6连接。
参照图8，所述上弹簧3包括四个上弹簧独立单元31，所述上弹簧独立单元31包括相互连接的上弹簧内臂311、中间臂312和上弹簧外臂313。所述四个独立单元31的上弹簧内臂311、中间臂312和上弹簧外臂313分别围设成上弹簧内圈、上弹簧中间圈以及上弹簧外圈。所述上弹簧内圈贴合固定在所述镜头座4的上端，所述上弹簧中间圈贴合固定在所述支架5的上端，所述上弹簧外圈贴合固定在所述上盖端子2上。
参照图9，所述下弹簧6包括四个下弹簧独立单元61，所述下弹簧独立单元61包括下弹簧内臂611以及下弹簧外臂612，所述下弹簧内臂611与所述下弹簧外臂612之间连接有弹簧丝613。所述四个下弹簧独立单元61的下弹簧内臂611、弹簧丝613和下弹簧外臂612分别围设成下弹簧内圈、下弹簧中间圈和下弹簧外圈，所述下弹簧内圈贴合固定在所述镜头座4的下端，所述下弹簧中间圈贴合固定在所述支架5的下端，所述下弹簧外圈贴合固定在所述下盖端子7上。
具体工作时，将镜头承载在所述镜头座4上，并利用所述插脚21和插脚72接通电源。当所述防抖线圈42通电时，所述防抖磁铁8对所述镜头座4以及防抖线圈42产生垂直于镜头座4轴线方向的作用力，使所述镜头座4在垂直于镜头座4轴线所在的平面内水平移动，从而实现光学防抖功能。当所述对焦线圈53通电时，所述对焦磁铁9对所述支架5以及对焦线圈53产生平行于镜头座4轴线方向的作用力，使支架5带动镜头座4沿镜头座4的轴线方向上下移动，实现自动对焦；当对角的两个对焦线圈53所产生的力大小不一样时，会使支架5沿镜头座4轴线方向上下移动的同时，还会产生偏转，以调整镜头与图像传感器之间的夹角，实现光轴矫正的功能。此外，该马达100中的防抖磁铁8和对焦磁铁9均固定不动，运动部件仅为镜头座4、支架5以及各个线圈，其中，镜头座4和支架5可采用塑料制作，在双摄像头模组中不存在马达的磁干扰问题，而且金属磁轭1能够屏蔽外界磁场，防止外界的磁干扰。
综上所述，本发明实施例提供的一种多轴音圈马达100，其利用全新的磁路实现了马达100的对焦、光学防抖和光轴矫正功能，不仅体积小、成本低，而且能够防止磁干扰，生产工艺较为简单，适于大批量生产。
以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本发明的保护范围之内。

Claims (10)

  1. 一种多轴音圈马达，其特征在于，包括金属磁轭、上盖端子、下盖端子、上弹簧、下弹簧、用于装载镜头的镜头座以及支架；所述镜头座的周缘上设置有至少两个防抖线圈，所述防抖线圈的绕线所在的平面平行于所述镜头座的轴线，所述支架的周缘设置有至少两个对焦线圈，所述对焦线圈的绕线所在的平面平行于所述镜头座的轴线；所述镜头座可移动地嵌置在所述支架上，每一个防抖线圈的外侧对应设置有防抖磁铁，且所述防抖磁铁靠近所述防抖线圈的一面同时存在沿垂直于所述镜头座轴线方向左右分布的N极和S极，所述防抖磁铁的N极和S极分别对应所述防抖线圈的左右两侧；每一个所述对焦线圈的外侧对应设置有对焦磁铁，所述对焦磁铁靠近所述对焦线圈的一面同时存在沿平行于所述镜头座轴线方向上下分布的N极和S极，所述对焦磁铁的N极和S极分别对应所述对焦线圈的上下两侧；所述上弹簧设置在所述上盖端子上，所述下弹簧设置在所述下盖端子上，所述上盖端子扣盖在所述下盖端子上，所述金属磁轭罩设在所述上盖端子外侧，所述镜头座和所述支架分别与所述上弹簧和下弹簧连接，并通过所述上弹簧和下弹簧悬挂在所述金属磁轭内，且所述防抖磁铁和对焦磁铁均固定在所述上盖端子与下盖端子之间。
  2. 如权利要求1所述的多轴音圈马达，其特征在于，所述防抖磁铁包括两个沿垂直于镜头座轴线方向左右并排设置的左防抖磁铁以及右防抖磁铁，所述左防抖磁铁与右防抖磁铁分别靠近所述防抖线圈的左竖边以及右竖边，并且，所述左防抖磁铁靠近防抖线圈的一面与右防抖磁铁靠近防抖线圈的一面的极性相反；所述对焦磁铁包括两个沿平行于镜头座轴线方向上下堆叠的上对焦磁铁以及下对焦磁铁，所述上对焦磁铁与下对焦磁铁分别靠近所述对焦线圈的上横边以及下横边，并且，所述上对焦磁铁靠近对焦线圈一面与下对焦磁铁铁靠近对焦线圈的一面的极性相反。
  3. 如权利要求1所述的多轴音圈马达，其特征在于，所述镜头座的周缘上设有至少两个第一凸起，所述防抖线圈绕置在所述第一凸起上；所述支架的底部沿所述支架的轴线方向朝同一侧延伸出至少两块挡板，形成限位部，每一块挡板的外侧均设有一个第二凸起，所述对焦线圈绕置在所述第二凸起上，所述镜头座可移动地嵌置在所述支架的限位部上，且所述防抖线圈相应地位于相邻两个对焦线圈之间。
  4. 如权利要求1所述的多轴音圈马达，其特征在于，所述上盖端子与下盖端子均为方形框架，所述防抖磁铁、对焦磁铁、防抖线圈以及对焦线圈的数量均为四个，所述四个防抖磁铁分别固定在所述上、下端子的四角，所述四个对焦磁铁分别固定在所述上、下端子的四个侧面上。
  5. 如权利要求4所述的多轴音圈马达，其特征在于，所述四个防抖线圈分别与所述上弹簧连接，所述四个对焦线圈分别与所述下弹簧连接。
  6. 如权利要求4所述的多轴音圈马达，其特征在于，所述四个防抖线圈中对角的两个线圈相互并联或相互串联后分别与所述上弹簧连接，所述四个对焦线圈相互并联后与所述下弹簧连接。
  7. 如权利要求4所述的多轴音圈马达，其特征在于，所述上弹簧包括四个上弹簧独立单元，所述上弹簧独立单元包括相互连接的上弹簧内臂、中间臂和上弹簧外臂，所述四个独立单元的上弹簧内臂、中间臂和上弹簧外臂分别围设成上弹簧内圈、上弹簧中间圈以及上弹簧外圈，所述上弹簧内圈贴合固定在所述镜头座的上端，所述上弹簧中间圈贴合固定在所述支架的上端，所述上弹簧外圈贴合固定在所述上盖端子上。
  8. 如权利要求4所述的多轴音圈马达，其特征在于，所述下弹簧包括四个下弹簧独立单元，所述下弹簧独立单元包括下弹簧内臂以及下弹簧外臂，所述下弹簧内臂与所述下弹簧外臂之间连接有弹簧丝，所述四个下弹簧独立单元的下弹簧内臂、弹簧丝和下弹簧外臂分别围设成下弹簧内圈、下弹簧中间圈和下弹簧外圈，所述下弹簧内圈贴合固定在所述镜头座的下端，所述下弹簧中间圈贴合固定在所述支架的下端，所述下弹簧外圈贴合固定在所述下盖端子上。
  9. 如权利要求1所述的多轴音圈马达，其特征在于，所述防抖磁铁和对焦磁铁为一块平面两极注磁磁铁;或者由两块磁铁组成的磁铁组，且两块磁铁同侧的极性相反。
  10. 如权利要求1至9中任意一项所述的多轴音圈马达，其特征在于，所述上盖端子的底部具有若干插脚，所述下盖端子的顶部与所述插脚相对应的位置处开设有若干通孔，所述上盖端子扣合在所述下盖端子上，且所述若干插脚分别穿过所述若干通孔。
PCT/CN2017/088728 2017-06-16 2017-06-16 一种多轴音圈马达 WO2018227589A1 (zh)

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