WO2019000214A1 - Multi-directionally movable voice coil motor, and dual-camera and dual-optical anti-vibration module - Google Patents

Multi-directionally movable voice coil motor, and dual-camera and dual-optical anti-vibration module Download PDF

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Publication number
WO2019000214A1
WO2019000214A1 PCT/CN2017/090294 CN2017090294W WO2019000214A1 WO 2019000214 A1 WO2019000214 A1 WO 2019000214A1 CN 2017090294 W CN2017090294 W CN 2017090294W WO 2019000214 A1 WO2019000214 A1 WO 2019000214A1
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WO
WIPO (PCT)
Prior art keywords
shake
coil
coils
spring
loading assembly
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Application number
PCT/CN2017/090294
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French (fr)
Chinese (zh)
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/CN2017/090294 priority Critical patent/WO2019000214A1/en
Publication of WO2019000214A1 publication Critical patent/WO2019000214A1/en

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K33/00Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
    • H02K33/18Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with coil systems moving upon intermittent or reversed energisation thereof by interaction with a fixed field system, e.g. permanent magnets

Definitions

  • the invention belongs to the technical field of camera driving devices, and particularly relates to a voice coil motor capable of multi-directional movement and a double-camera dual optical anti-shake module.
  • the camera pixel of the mobile phone has been upgraded, and the function requirements are more diversified.
  • the anti-shake function is already the standard configuration of the mobile phone, and the market is TDK.
  • MITSUMI and ALPS production belt OIS The function of the motor is dominant.
  • the optical anti-shake motors of the above three are complicated in structure due to the magnets in the moving parts designed by themselves, and the moving parts are heavy and consume a large amount of electricity. And because there are magnets in the moving parts, the motor is easily affected by the external magnetic field or the magnetic field of the nearby motor. Therefore, it is currently impossible to use two motors with optical anti-shake function on the dual camera at the same time, that is, the double-lens double optical anti-shake mode cannot be realized. group.
  • the current optical image stabilization motor moves in three dimensions, Z-direction AF and translation or around in the X&Y plane.
  • the deflection of the X/Y axis, but the translation of the X&Y plane produces a deflection of the optical axis from the Z axis, and the deflection around the X/Y axis also brings along Z.
  • the deflection in the axial direction and the error in the assembly process of the module will cause the lens to form a certain angle with the image sensor, resulting in the image of the camera module being unclear at the four corners and the edges, especially in the pixel.
  • All mobile phones, modules and motor factories have made efforts to solve the problems they are currently encountering, such as the need to introduce modules during the assembly process.
  • the AA machine reduces assembly errors, but the AA machine is costly, and production efficiency and yield are less than ideal.
  • the technical problem to be solved by the present invention is to provide a multi-directional moving voice coil motor and a dual-camera dual optical anti-shake module, which aims to solve the problem that the prior art cannot simultaneously use two optical anti-shake functions on the dual camera.
  • the motor and the assembly angle and the like easily cause a certain angle between the lens and the image sensor.
  • the embodiment of the invention provides a multi-directional moving voice coil motor, which comprises a loading assembly for loading a lens, a metal yoke covered on the outside of the loading assembly, a plurality of magnet sets, an upper spring, a lower spring, an upper gasket, and a lower cover;
  • the outer side of the loading assembly is fixed with at least two anti-shake coils distributed along the circumferential direction of the loading assembly, the plane of the winding of the anti-shake coil is perpendicular to the axial direction of the loading assembly; At least two deflection focus coils are further fixed on the side, and the winding plane of the deflection focus coil is parallel to the axial direction of the loading assembly;
  • the magnet group is fixed on an inner side surface of the metal yoke, and an anti-shake coil and a deflection focus coil jointly correspond to a magnet group; wherein an end of the magnet group facing the loading assembly is an inner end portion, One end facing away from the loading assembly is an outer end portion, and the inner end portion is opposite in polarity to the outer end portion; the magnet group is divided into an upper end portion and a lower end portion along an axial direction of the loading assembly, the magnet The upper end of the group is opposite to a side of the deflection focus coil and the lower end is opposite to a side of the deflection focus coil;
  • the deflection focus coil corresponds to an end surface of an inner end portion of the magnet group, and an upper lateral side of the deflection focus coil is located in a magnetic field of an upper end portion; a magnetic field of a lower lateral side of the deflection focus coil is located at a lower end portion
  • the anti-shake coil corresponds to an end surface of an upper end portion or a lower end portion of the magnet group, and a left lateral side of the anti-shake coil is located in a magnetic field at an outer end portion of the magnet group, and the anti-shake coil The right lateral side is located in the magnetic field at the inner end of the magnet group;
  • An upper end of the loading assembly is fixedly coupled to the upper spring, a lower end thereof is fixedly coupled to the lower spring; the upper spring is coupled to the upper gasket, and the lower spring is coupled to the lower cover, the upper portion The spacer and the lower cover are mutually inserted; the lower cover has a terminal for electrically connecting with an external circuit, and the anti-shake coil and the deflection focus coil pass the upper spring, the lower spring, and the upper gasket and the lower cover The electrical connection of the terminals.
  • the magnet group is a magnet that is magnetized by a plane two poles in a plane perpendicular to the axial direction of the loading assembly, or may be two ordinary magnets stacked on top of each other.
  • the loading assembly includes a carrier and a bracket stacked one above another in the optical axis direction of the voice coil motor, the carrier and the bracket being a split structure or a unitary structure; all the anti-shake coils are fixed on the carrier, and Distributed along the circumferential spacing of the carrier; all of the deflection focus coils are attached to the stent and distributed along the circumferential spacing of the stent.
  • the voice coil motor includes at least two sets of anti-shake coils, wherein each set of anti-shake coils includes two oppositely disposed anti-shake coils, and two anti-shake coils of the same group are connected in series/parallel or mutually to the outside
  • the control circuit is connected; four of the two sets of anti-shake coils are evenly distributed on the outer circumference of the carrier.
  • the voice coil motor includes two sets of yaw focus coils, wherein each set of yaw focus coils includes two oppositely disposed yaw focus coils, and the same set of two yaw focus coils are connected in series/parallel to each other;
  • the four deflection focus coils in the deflection focus coil are evenly distributed on the outer circumference of the bracket.
  • the outer circumference of the bracket extends along the circumferential direction of four evenly distributed card strips, and the deflection focus coil is sleeved on the card strip.
  • the upper spring and the lower spring are respectively provided with a conductive line, and the anti-shake coil and the deflection focus coil are electrically connected to the conductive lines on the upper spring and the lower spring;
  • the upper gasket extends to conduct electricity a pin, the conductive line of the upper spring is electrically connected to the pin of the upper pad, the conductive line of the lower spring is electrically connected to the terminal of the lower cover; and the lower cover is provided with a avoidance hole, When the gasket and the lower cover are inserted into each other, the pin passes through the escape hole of the lower cover.
  • the upper spring includes four connecting units staggered in the circumferential direction of the loading assembly, each connecting unit unit including an upper outer arm, an upper middle arm, an upper inner arm, and an upper spring arm connected between the three
  • the upper outer arm is fixedly attached to the upper spacer
  • the upper intermediate arm is attached to the upper end surface of the bracket
  • the upper inner arm is fixedly fixed on the upper end surface of the carrier, and Electrically connected to the anti-shake coil and the deflection focus coil.
  • the lower spring comprises eight connecting units which are staggered in the circumferential direction of the loading assembly, each connecting unit unit includes a lower outer arm, a lower spring arm and a lower inner arm, and the lower outer arm is fixedly fixed thereto.
  • the lower spring arm is attached to the lower end surface of the bracket, and the lower inner arm is fixedly fixed to the lower end surface of the carrier, and is electrically connected to the anti-shake coil and the deflection focus coil.
  • the present invention also provides a dual-camera dual optical anti-shake module comprising two of the above-described multi-directional moving voice coil motors.
  • the invention has the following advantages:
  • the magnet group is fixedly mounted on the inner side surface of the metal yoke; the loading assembly and the coil are suspended in the metal yoke by the upper spring and the lower spring, and the metal yoke can shield the external magnetic field and prevent external magnetic interference.
  • the magnet group When the anti-shake coil is energized, the magnet group can generate different directions of force for the at least two anti-shake coils, the plane of the two forces being perpendicular to the optical axis (ie, the axis direction of the loading assembly), so that the loading assembly can be pushed
  • the optical anti-shake function is realized by the controllable motion in any direction perpendicular to the plane of the optical axis.
  • a current of the same magnitude is applied to all of the deflection focus coils, the magnetic field of the magnet group produces a force parallel to the optical axis to the deflection focus coil, driving the loading assembly to move back and forth along the optical axis direction to achieve focusing.
  • the motor mechanism of the invention has small volume and simple structure, wherein a plurality of coils can be connected in series or in parallel to form at least three sets of independent working coil groups, which can control the movement of the lens along three degrees of freedom (X, Y and Z directions). And the deflection around the X/Y axis, it can auto focus, optical image stabilization, and can correct the angle between the lens and the image sensor caused by assembly or focus or anti-shake, and can also overcome the main of the dual camera module. The alignment between the camera and the optical axis of the sub-camera ultimately improves the overall quality of the camera function of the camera. In addition, the multi-axis motor can completely cancel the AA machine in the module production process, which is a disruptive revolution, greatly reducing the dependence on production equipment, reducing production costs and improving production efficiency.
  • the internal moving part of the motor is a loading assembly and a coil.
  • the loading assembly can be made of plastic. Since the moving parts have no magnet, the weight is light, the power consumption is low, and the external magnetic field is not easily affected. Therefore, there is no mutual magnetic field interference between the two motors located close to each other.
  • the motor is applied to the dual-camera dual optical anti-shake module, so that the module can have an optical anti-shake function.
  • FIG. 1 is a schematic exploded view of a multi-directional moving voice coil motor according to an embodiment of the present invention
  • Figure 2 is a longitudinal cross-sectional view of the motor of Figure 1;
  • FIG. 3 is a schematic view showing the positional relationship of a deflection focus coil, an anti-shake coil, and a magnet in the motor shown in FIG. 1;
  • Figure 4 is a perspective view showing the structure of the upper spring in the motor shown in Figure 1;
  • Fig. 5 is a perspective view showing the structure of a lower spring in the motor shown in Fig. 1.
  • a multi-directional moving voice coil motor in accordance with a preferred embodiment of the present invention, includes a loading assembly for loading a lens, and a metal covering the outside of the loading assembly 1.
  • At least two anti-shake coils 5 distributed along the circumferential direction of the loading unit 1 are fixed to the outer surface of the loading unit 1, and the plane of the winding of the anti-shake coil 5 is perpendicular to the axial direction of the loading unit 1.
  • At least two deflection focus coils 4 are also fixed on the outer side surface of the loading assembly 1.
  • the present embodiment has two sets of deflection focus coils. 4.
  • Each set of deflection focus coils 4 includes two deflection focus coils 4 respectively fixed to opposite outer faces of the loading assembly 1, and the winding plane of the deflection focus coils 4 is parallel to the axial direction of the loading assembly 1.
  • a plurality of magnet groups 3 are fixed to the inner side surface of the metal yoke 2.
  • an anti-shake coil 5 and a deflection focus coil 4 collectively correspond to a magnet group 3.
  • one end of the magnet group 3 facing the loading assembly 1 is an inner end portion, and one end facing away from the loading assembly 1 is an outer end portion, and the inner end portion and the outer end portion have opposite polarities; the magnet group 3 is along the axial direction of the loading assembly 1.
  • the upper end portion of the magnet group 3 is opposite to the polarity of a side surface of the deflection focusing coil 4 close to the side surface of the deflection focusing coil 4.
  • the deflection focus coil 4 corresponds to the end surface of the inner end portion of the magnet group 3, and the upper lateral side 41 of the deflection focus coil 4 is located in the magnetic field of the upper end portion, and the lower lateral side 42 of the deflection focus coil 4 is located in the magnetic field of the lower end portion.
  • the anti-shake coil 5 corresponds to the end surface of the upper end portion of the magnet group 3 (in practical applications, the anti-shake coil 5 can also be disposed at a position corresponding to the end surface of the lower end portion of the magnet group 3), and the left-hand side of the anti-shake coil 5
  • the side 53 is located in the magnetic field at the outer end of the magnet group 3
  • the right lateral side 54 of the anti-shake coil 5 is located in the magnetic field at the inner end of the magnet group 3.
  • the upper end of the loading assembly 1 is fixedly connected to the upper spring 6, and the lower end thereof is fixedly connected to the lower spring 7; the upper spring 6 is connected to the upper spacer 8, the lower spring 7 is connected to the lower cover 9, and the upper spacer 8 and the lower cover 9 are mutually connected.
  • the lower cover 9 has a conductive terminal 91 for electrical connection with an external circuit, and the anti-shake coil 5 and the deflection focus coil 4 are electrically connected to the terminal 91 of the lower cover 9 via the upper spring 6, the lower spring 7, and the upper spacer 8.
  • the magnet group 3 is two ordinary magnets stacked on top of each other (in practical applications, a magnet that is magnetized in a plane perpendicular to the plane perpendicular to the axis of the loading assembly 1), as shown in the figure,
  • the magnet group 3 includes two stepped upper layer magnets 31 and a lower layer magnet 32.
  • the inner end portion of the upper layer magnet 31 is an S pole
  • the outer end portion is an N pole
  • the inner end portion of the lower layer magnet 32 is an N pole.
  • the outer end is an S pole.
  • the loading assembly 1 includes a carrier 11 and a bracket 12 that are stacked one above another in the optical axis direction.
  • the carrier 11 and the bracket 12 are in a separate structure or a unitary structure.
  • the carrier 11 and the bracket 12 are in a separate structure, and all the anti-shake coils 5 are fixed on the carrier 11 and distributed along the circumferential direction of the carrier 11; all the deflection focusing coils 4 are fixed on the bracket 12, And distributed along the circumferential direction of the stent 12.
  • the voice coil motor described above includes two sets of anti-shake coils 5 and two sets of deflection focus coils 4.
  • Each of the anti-shake coils 5 includes two anti-shake coils 5 disposed oppositely, and the two anti-shake coils 5 of the same group are connected in series or in parallel, or there is no direct electrical connection between the anti-shake coils 5, respectively.
  • Each set of deflection focus coils 4 includes two oppositely disposed deflection focus coils 4. The two deflection focus coils 4 of the same group are connected in series or in parallel, or there may be no direct electrical connection between the deflection focus coils 4, respectively.
  • the circuit connections are individually controlled.
  • the outer circumference of the bracket 12 extends four circumferentially distributed strips 121 along the circumferential direction thereof, and the four deflection focus coils 4 are respectively sleeved on the strips 121.
  • the magnet group 3 can generate forces in different directions for the two sets of anti-shake coils 5.
  • the directions of the two forces are orthogonal to each other.
  • the planes of the two forces are perpendicular to the optical axis (ie, the axial direction of the carrier 11), so that the carrier 11 and the components connected thereto can be pushed in a controlled motion in any direction perpendicular to the plane of the optical axis to achieve optical image stabilization.
  • each of the deflection focus coils 4 When a current of the same magnitude is supplied to each of the deflection focus coils 4, the lateral side 41 and the lower lateral side 42 of each of the deflection focus coils 4 correspond to one conductor, and the upper lateral side 41 and the lower lateral side 42 are respectively received by the upper layer magnet 31.
  • the magnetic field of the lower layer magnet 32 is affected by the magnetic field in the axial direction of the bracket 12, and the direction of the magnetic field in the upper lateral side 41 and the lower lateral side 42 is opposite, so that the direction of the magnetic field is opposite, so the whole
  • the magnitude and direction of the force of the magnet group 3 on each of the deflection focus coils 4 are the same.
  • the magnet group 3 can push the bracket 12 and the member connected thereto to move up and down along the optical axis direction (ie, the axial direction of the bracket 12). , to achieve auto focus function.
  • the magnitude or direction of the force received by the deflection focus coil 4 on both sides of the bracket 12 is different, so that the bracket 12 is deflected along the X/Y axis. , to achieve optical axis calibration and correction.
  • the upper spring 6 and the lower spring 7 are each provided with a conductive line (in practical applications, the upper spring 6 and the lower spring 7 are entirely made of a metal material, for example, copper or copper. alloy).
  • the anti-shake coil 5 and the deflection focus coil 4 are electrically connected to the conductive lines on the upper spring 6 and the lower spring 7.
  • the upper gasket 8 extends out of the conductive pin 81, the conductive line of the upper spring 6 is electrically connected to the pin 81 of the upper gasket 8, and the conductive line of the lower spring 7 is electrically connected to the terminal 91 of the lower cover 9; the lower cover 9 is opened When the upper spacer 8 and the lower cover 9 are inserted into each other, the pin 81 passes through the escape hole 92 of the lower cover 9 so as to be electrically connected to an external circuit.
  • the upper spring 6 includes four connecting units staggered along the circumferential direction of the loading assembly 1, each connecting unit unit including an upper outer arm 61, an upper intermediate arm 62, an upper inner arm 63, and three connected Between the upper spring arms 64.
  • the upper outer arm 61 is fixedly attached to the upper spacer 8, and the upper intermediate arm 62 is attached to the upper end surface of the bracket 12.
  • the upper inner arm 63 is fixedly attached to the upper end surface of the carrier 11, and is coupled to the anti-shake coil 5 and the deflection.
  • the focus coil 4 is electrically connected.
  • the lower spring 7 includes eight connecting units which are alternately distributed along the circumferential direction of the loading assembly 1, and each of the connecting unit units includes a lower outer arm 71, a lower spring arm 72 and a lower inner arm 73 which are sequentially connected.
  • the lower outer arm 71 is fixedly attached to the lower cover 9, the lower spring arm 72 is attached to the lower end surface of the bracket 12, and the lower inner arm 73 is fixedly attached to the lower end surface of the carrier 11, and is coupled to the anti-shake coil 5 and the deflection focus coil. 4 electrical connections.
  • the outer side cover of the loading assembly 1 is provided with a metal yoke 2, and the magnet group 3 is fixedly mounted on the inner side surface of the metal yoke 2; the loading assembly 1 and all the coils pass through the upper spring 6
  • the lower spring 7 is suspended in the metal yoke 2, and the metal yoke 2 can shield the external magnetic field from external magnetic interference.
  • the motor mechanism of the embodiment has a small volume and a simple structure, wherein a plurality of coils can be connected in series or in parallel to form at least three sets of independently working coil groups, which can control the lens in three degrees of freedom (X, Y and Z directions). Movement and deflection around the X/Y axis can autofocus, optical image stabilization, and correct the off-angle of the lens and image sensor caused by assembly or focus or anti-shake, and can also overcome the dual camera module
  • the alignment between the main camera and the optical axis of the sub-camera ultimately improves the overall quality of the camera function of the electronic device such as a mobile phone.
  • the multi-axis motor can completely cancel the AA machine in the module production process, which is a disruptive revolution, greatly reducing the dependence on production equipment, reducing production costs and improving production efficiency.
  • the embodiment also provides a dual-camera dual optical anti-shake module, comprising two multi-directional moving voice coil motors.
  • the carrier 11 and the bracket 12 in this embodiment can be made of plastic. Since the moving parts have no magnet, the weight is light, the power consumption is low, and the external magnetic field is not easily affected. Therefore, there is no mutual magnetic field interference between the two motors located close to each other.
  • the motor is applied to the dual-camera dual optical anti-shake module, so that the module can have an optical anti-shake function.

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  • Power Engineering (AREA)
  • Adjustment Of Camera Lenses (AREA)
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Abstract

The present invention is applicable to the technical field of photographing driver devices, and provides a multi-directionally movable voice coil motor, and a dual-camera and dual-optical anti-vibration module. The voice coil motor comprises a load assembly, a metal magnetic yoke, a magnet set, an upper spring, a lower spring, an upper gasket, and a lower cover. The metal magnetic yoke can shield an external magnetic field, and avoids external magnetic interference. Multiple coils can be connected in series or in parallel to constitute more than at least three coil sets operating independently, in order to control lenses to move in directions of three degrees of freedom and deflect about an X/Y axis, so that automatic focusing and optical anti–vibration can be implemented, the deflection between a lens and an image sensor generated due to assembly or the implementation of automatic focusing and anti-vibration can also be corrected, and the alignment problem between optical axes of a main camera and a secondary camera of a dual-camera module can also be overcome. The movement portion of the motor has no magnet and light weight, and is not easy to be influenced by an external magnetic field. By applying two motors to a dual-camera and dual-optical anti-vibration module, the module can have an optical anti-vibration function.

Description

一种可多向运动的音圈马达以及双摄双光学防抖模组A multi-directional moving voice coil motor and a dual-camera dual optical anti-shake module 技术领域Technical field
本发明属于摄像驱动装置技术领域,尤其涉及一种可多向运动的音圈马达以及双摄双光学防抖模组。 The invention belongs to the technical field of camera driving devices, and particularly relates to a voice coil motor capable of multi-directional movement and a double-camera dual optical anti-shake module.
背景技术Background technique
手机摄像头像素一直在升级,功能要求更加多样化,学防抖功能已经是手机的标准配置,市场上以 TDK 、 MITSUMI 和 ALPS 生产带 OIS 功能的马达为主。但上述三家的光学防抖马达由于其本身设计的运动部件中有磁铁,结构复杂,运动部件重量较重,耗电量大。并且由于运动部件中有磁铁,马达容易受到外界磁场或附近马达的磁场影响,所以,目前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。The camera pixel of the mobile phone has been upgraded, and the function requirements are more diversified. The anti-shake function is already the standard configuration of the mobile phone, and the market is TDK. MITSUMI and ALPS production belt OIS The function of the motor is dominant. However, the optical anti-shake motors of the above three are complicated in structure due to the magnets in the moving parts designed by themselves, and the moving parts are heavy and consume a large amount of electricity. And because there are magnets in the moving parts, the motor is easily affected by the external magnetic field or the magnetic field of the nearby motor. Therefore, it is currently impossible to use two motors with optical anti-shake function on the dual camera at the same time, that is, the double-lens double optical anti-shake mode cannot be realized. group.
另一方面,目前的光学防抖马达的运动为三个维度, Z 向的自动对焦和在 X&Y 平面内的平移或者绕着 X/Y 轴的偏转,但是在 X&Y 平面内的平移的同时会产生光轴偏离 Z 轴的偏转,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误差,以上都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的不清晰,尤其是在像素越来越高的情况下,成像效果不佳问题越来越明显。各手机、模组以及马达厂已经着力解决目前所遇见的问题,例如模组的装配过程中需要引入 AA 机台降低组装误差,但是 AA 机台成本很高,生产效率和良率都不太理想。On the other hand, the current optical image stabilization motor moves in three dimensions, Z-direction AF and translation or around in the X&Y plane. The deflection of the X/Y axis, but the translation of the X&Y plane produces a deflection of the optical axis from the Z axis, and the deflection around the X/Y axis also brings along Z. The deflection in the axial direction and the error in the assembly process of the module will cause the lens to form a certain angle with the image sensor, resulting in the image of the camera module being unclear at the four corners and the edges, especially in the pixel. The higher the case, the more difficult the imaging problem becomes. All mobile phones, modules and motor factories have made efforts to solve the problems they are currently encountering, such as the need to introduce modules during the assembly process. The AA machine reduces assembly errors, but the AA machine is costly, and production efficiency and yield are less than ideal.
技术问题technical problem
本发明所要解决的技术问题在于提供一种可多向运动的音圈马达以及双摄双光学防抖模组,旨在解决现有技术中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以及由于组装等原因容易引起镜头与图像传感器产生一定的夹角的问题。The technical problem to be solved by the present invention is to provide a multi-directional moving voice coil motor and a dual-camera dual optical anti-shake module, which aims to solve the problem that the prior art cannot simultaneously use two optical anti-shake functions on the dual camera. The motor and the assembly angle and the like easily cause a certain angle between the lens and the image sensor.
技术解决方案Technical solution
本发明实施例提供了一种一种可多向运动的音圈马达,其特征在于,包括用于装载镜头的装载组件、罩设于装载组件外侧的金属磁轭、若干磁铁组、上弹簧、下弹簧、上垫片以及下盖; The embodiment of the invention provides a multi-directional moving voice coil motor, which comprises a loading assembly for loading a lens, a metal yoke covered on the outside of the loading assembly, a plurality of magnet sets, an upper spring, a lower spring, an upper gasket, and a lower cover;
所述装载组件的外侧面上固定有至少两个沿装载组件周向分布的防抖线圈,所述防抖线圈的绕线所在平面与所述装载组件的轴线方向垂直;所述装载组件的外侧面上还固定有至少两个偏转对焦线圈,所述偏转对焦线圈的绕线平面与所述装载组件的轴线方向平行;The outer side of the loading assembly is fixed with at least two anti-shake coils distributed along the circumferential direction of the loading assembly, the plane of the winding of the anti-shake coil is perpendicular to the axial direction of the loading assembly; At least two deflection focus coils are further fixed on the side, and the winding plane of the deflection focus coil is parallel to the axial direction of the loading assembly;
所述若干磁铁组固定在所述金属磁轭的内侧面上,一个防抖线圈与一个偏转对焦线圈共同对应一个磁铁组;其中,所述磁铁组面向所述装载组件的一端为内端部,背向所述装载组件的一端为外端部,所述内端部与外端部的极性相反;所述磁铁组沿所述装载组件的轴线方向分为上端部以及下端部,所述磁铁组的上端部靠近偏转对焦线圈的一侧面与下端部靠近偏转对焦线圈的一侧面的极性相反;The magnet group is fixed on an inner side surface of the metal yoke, and an anti-shake coil and a deflection focus coil jointly correspond to a magnet group; wherein an end of the magnet group facing the loading assembly is an inner end portion, One end facing away from the loading assembly is an outer end portion, and the inner end portion is opposite in polarity to the outer end portion; the magnet group is divided into an upper end portion and a lower end portion along an axial direction of the loading assembly, the magnet The upper end of the group is opposite to a side of the deflection focus coil and the lower end is opposite to a side of the deflection focus coil;
所述偏转对焦线圈对应于所述磁铁组的内端部的端面,并且,所述偏转对焦线圈的上横边位于上端部的磁场内;所述偏转对焦线圈的下横边位于下端部的磁场内;所述防抖线圈对应于所述磁铁组的上端部或下端部的端面,并且,所述防抖线圈的左横边位于所述磁铁组外端部的磁场内,所述防抖线圈的右横边位于所述磁铁组内端部的磁场内;The deflection focus coil corresponds to an end surface of an inner end portion of the magnet group, and an upper lateral side of the deflection focus coil is located in a magnetic field of an upper end portion; a magnetic field of a lower lateral side of the deflection focus coil is located at a lower end portion The anti-shake coil corresponds to an end surface of an upper end portion or a lower end portion of the magnet group, and a left lateral side of the anti-shake coil is located in a magnetic field at an outer end portion of the magnet group, and the anti-shake coil The right lateral side is located in the magnetic field at the inner end of the magnet group;
所述装载组件的上端与所述上弹簧固定连接,其下端与所述下弹簧固定连接;所述上弹簧与所述上垫片连接,所述下弹簧与所述下盖连接,所述上垫片与下盖相互插接;所述下盖具有用于与外界电路电连接的端子,所述防抖线圈以及偏转对焦线圈通过所述上弹簧、下弹簧以及上垫片与所述下盖的端子电气连接。An upper end of the loading assembly is fixedly coupled to the upper spring, a lower end thereof is fixedly coupled to the lower spring; the upper spring is coupled to the upper gasket, and the lower spring is coupled to the lower cover, the upper portion The spacer and the lower cover are mutually inserted; the lower cover has a terminal for electrically connecting with an external circuit, and the anti-shake coil and the deflection focus coil pass the upper spring, the lower spring, and the upper gasket and the lower cover The electrical connection of the terminals.
进一步地,所述磁铁组为一块沿垂直于装载组件的轴线方向所在平面进行平面两极注磁的磁铁,也可以是两块上下堆叠的普通磁铁。Further, the magnet group is a magnet that is magnetized by a plane two poles in a plane perpendicular to the axial direction of the loading assembly, or may be two ordinary magnets stacked on top of each other.
进一步地,所述装载组件包括沿音圈马达的光轴方向上下叠置的载体以及支架,所述载体与支架为分体结构或者一体结构;所有的防抖线圈固定在所述载体上,并沿载体的周向间隔分布;所有的偏转对焦线圈固定在所述支架上,并沿支架的周向间隔分布。Further, the loading assembly includes a carrier and a bracket stacked one above another in the optical axis direction of the voice coil motor, the carrier and the bracket being a split structure or a unitary structure; all the anti-shake coils are fixed on the carrier, and Distributed along the circumferential spacing of the carrier; all of the deflection focus coils are attached to the stent and distributed along the circumferential spacing of the stent.
进一步地,所述音圈马达包括至少两组防抖线圈,其中,每组防抖线圈包括两个相对设置的防抖线圈,同一组的两个防抖线圈相互串/并联连接或者各自与外界控制电路连接;所述两组防抖线圈中的四个防抖线圈均匀地分布于所述载体的外周缘。Further, the voice coil motor includes at least two sets of anti-shake coils, wherein each set of anti-shake coils includes two oppositely disposed anti-shake coils, and two anti-shake coils of the same group are connected in series/parallel or mutually to the outside The control circuit is connected; four of the two sets of anti-shake coils are evenly distributed on the outer circumference of the carrier.
进一步地,所述音圈马达包括两组偏转对焦线圈,其中,每组偏转对焦线圈包括两个相对设置的偏转对焦线圈,同一组的两个偏转对焦线圈相互串/并联连接;所述两组偏转对焦线圈中的四个偏转对焦线圈均匀地分布于所述支架的外周缘。Further, the voice coil motor includes two sets of yaw focus coils, wherein each set of yaw focus coils includes two oppositely disposed yaw focus coils, and the same set of two yaw focus coils are connected in series/parallel to each other; The four deflection focus coils in the deflection focus coil are evenly distributed on the outer circumference of the bracket.
进一步地,所述支架的外周缘沿其周向延伸出四个均匀分布的卡条,所述偏转对焦线圈套设于所述卡条上。Further, the outer circumference of the bracket extends along the circumferential direction of four evenly distributed card strips, and the deflection focus coil is sleeved on the card strip.
进一步地,所述上弹簧以及下弹簧上均设置有导电线路,所述防抖线圈以及偏转对焦线圈均与所述上弹簧、下弹簧上的导电线路电气连接;所述上垫片延伸出导电的插脚,所述上弹簧的导电线路与所述上垫片的插脚电气连接,所述下弹簧的导电线路与所述下盖的端子电气连接;所述下盖上开设有避让孔,当上垫片与下盖相互插接时,所述插脚穿出所述下盖的避让孔。Further, the upper spring and the lower spring are respectively provided with a conductive line, and the anti-shake coil and the deflection focus coil are electrically connected to the conductive lines on the upper spring and the lower spring; the upper gasket extends to conduct electricity a pin, the conductive line of the upper spring is electrically connected to the pin of the upper pad, the conductive line of the lower spring is electrically connected to the terminal of the lower cover; and the lower cover is provided with a avoidance hole, When the gasket and the lower cover are inserted into each other, the pin passes through the escape hole of the lower cover.
进一步地,所述上弹簧包括四个沿装载组件周向交错分布的连接单元,每一连接单元单元均包括上外臂、上中间臂、上内臂以及连接于三者之间的上弹簧臂,所述上外臂贴合固定在所述上垫片上,所述上中间臂贴合在所述支架的上端面上,所述上内臂贴合固定在所述载体上端面上,并与所述防抖线圈以及偏转对焦线圈电气连接。Further, the upper spring includes four connecting units staggered in the circumferential direction of the loading assembly, each connecting unit unit including an upper outer arm, an upper middle arm, an upper inner arm, and an upper spring arm connected between the three The upper outer arm is fixedly attached to the upper spacer, the upper intermediate arm is attached to the upper end surface of the bracket, and the upper inner arm is fixedly fixed on the upper end surface of the carrier, and Electrically connected to the anti-shake coil and the deflection focus coil.
进一步地,所述下弹簧包括八个沿装载组件周向交错分布的连接单元,每一连接单元单元均包括下外臂、下弹簧臂以及下内臂,所述下外臂贴合固定在所述下盖上,所述下弹簧臂贴合在所述支架的下端面上,所述下内臂贴合固定在所述载体下端面上,并与所述防抖线圈以及偏转对焦线圈电气连接。Further, the lower spring comprises eight connecting units which are staggered in the circumferential direction of the loading assembly, each connecting unit unit includes a lower outer arm, a lower spring arm and a lower inner arm, and the lower outer arm is fixedly fixed thereto. In the cover, the lower spring arm is attached to the lower end surface of the bracket, and the lower inner arm is fixedly fixed to the lower end surface of the carrier, and is electrically connected to the anti-shake coil and the deflection focus coil. .
为解决上述技术问题,本发明还提供一种双摄双光学防抖模组,包括两个上述的可多向运动的音圈马达。In order to solve the above technical problem, the present invention also provides a dual-camera dual optical anti-shake module comprising two of the above-described multi-directional moving voice coil motors.
有益效果Beneficial effect
本发明与现有技术相比,有益效果在于:Compared with the prior art, the invention has the following advantages:
磁铁组固定安装在金属磁轭内侧面上;装载组件以及线圈通过上弹簧和下弹簧悬挂在金属磁轭内,金属磁轭能够屏蔽外界磁场,防止外界的磁干扰。The magnet group is fixedly mounted on the inner side surface of the metal yoke; the loading assembly and the coil are suspended in the metal yoke by the upper spring and the lower spring, and the metal yoke can shield the external magnetic field and prevent external magnetic interference.
当防抖线圈通电时,磁铁组可对至少两个防抖线圈产生不同方向的力,这两个力所在的平面垂直于光轴(即装载组件的轴线方向),这样就能推动装载组件在垂直于光轴所在平面内任意方向的可控运动,实现光学防抖功能。当对所有偏转对焦线圈通入大小相同的电流时,磁铁组的磁场向对偏转对焦线圈产生一个平行于光轴的作用力,驱使装载组件沿着光轴方向前后移动,从而实现对焦。当对同一组中的两个偏转对焦线圈通入大小或方向不同的电流时,磁铁组的磁场向对两侧的偏转对焦线圈产生的作用力大小或方向不同,从而装载组件的两侧边发生偏转,实现光轴校准以及矫正。When the anti-shake coil is energized, the magnet group can generate different directions of force for the at least two anti-shake coils, the plane of the two forces being perpendicular to the optical axis (ie, the axis direction of the loading assembly), so that the loading assembly can be pushed The optical anti-shake function is realized by the controllable motion in any direction perpendicular to the plane of the optical axis. When a current of the same magnitude is applied to all of the deflection focus coils, the magnetic field of the magnet group produces a force parallel to the optical axis to the deflection focus coil, driving the loading assembly to move back and forth along the optical axis direction to achieve focusing. When a current of different magnitude or direction is applied to two deflection focus coils in the same group, the magnitude of the force generated by the magnetic field of the magnet group to the deflection focus coils on both sides is different, so that both sides of the loading assembly occur. Deflection, optical axis calibration and correction.
本发明的马达机构体积小、结构简单,其中多个线圈可串联或者并联,组成至少三组以上独立工作的线圈组,能控制镜头沿三个自由度方向(X、Y以及Z方向)的运动以及绕X/Y轴方向的偏转,可以自动对焦、光学防抖,还能纠正由于组装或者实现对焦或者防抖时所产生的镜头与图像传感器的偏角,也可以克服双摄像头模组的主摄像头与副摄像头光轴之间的对准,最终提升手机摄像头拍照功能的整体品质效果。另外多轴马达在模组生产过程中,完全可以取消AA机台,是颠覆性革命,大大节省对生产设备的依赖,降低生产成本,提高生产效率。The motor mechanism of the invention has small volume and simple structure, wherein a plurality of coils can be connected in series or in parallel to form at least three sets of independent working coil groups, which can control the movement of the lens along three degrees of freedom (X, Y and Z directions). And the deflection around the X/Y axis, it can auto focus, optical image stabilization, and can correct the angle between the lens and the image sensor caused by assembly or focus or anti-shake, and can also overcome the main of the dual camera module. The alignment between the camera and the optical axis of the sub-camera ultimately improves the overall quality of the camera function of the camera. In addition, the multi-axis motor can completely cancel the AA machine in the module production process, which is a disruptive revolution, greatly reducing the dependence on production equipment, reducing production costs and improving production efficiency.
马达的内部运动部分为装载组件以及线圈,装载组件可以采用塑料制作,由于运动部件没有磁铁,重量轻,功耗低,不易受到外界磁场的影响。所以,位置靠近的两个马达之间亦不会产生相互的磁场干扰,将该马达应用在双摄双光学防抖模组中,可使模组具备光学防抖功能。The internal moving part of the motor is a loading assembly and a coil. The loading assembly can be made of plastic. Since the moving parts have no magnet, the weight is light, the power consumption is low, and the external magnetic field is not easily affected. Therefore, there is no mutual magnetic field interference between the two motors located close to each other. The motor is applied to the dual-camera dual optical anti-shake module, so that the module can have an optical anti-shake function.
附图说明DRAWINGS
一个或多个实施例通过与之对应的附图中的图片进行示例性说明,这些示例性说明并不构成对实施例的限定,附图中具有相同参考数字标号的元件表示为类似的元件,除非有特别申明,附图中的图不构成比例限制。The one or more embodiments are exemplified by the accompanying drawings in the accompanying drawings, and FIG. The figures in the drawings do not constitute a scale limitation unless otherwise stated.
图1是本发明实施例提供的一种可多向运动的音圈马达的分解结构示意图;1 is a schematic exploded view of a multi-directional moving voice coil motor according to an embodiment of the present invention;
图2是图1所示马达的纵向剖视示意图;Figure 2 is a longitudinal cross-sectional view of the motor of Figure 1;
图3是图1所示马达中的偏转对焦线圈、防抖线圈以及磁铁的位置关系示意图;3 is a schematic view showing the positional relationship of a deflection focus coil, an anti-shake coil, and a magnet in the motor shown in FIG. 1;
图4是图1所示马达中的上弹簧的立体结构示意图;Figure 4 is a perspective view showing the structure of the upper spring in the motor shown in Figure 1;
图5是图1所示马达中的下弹簧的立体结构示意图。Fig. 5 is a perspective view showing the structure of a lower spring in the motor shown in Fig. 1.
本发明的实施方式Embodiments of the invention
为了使本发明所要解决的技术问题、技术方案及有益效果更加清楚明白,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。The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
请参阅图1及图2,为本发明的一较佳实施例,提供了一种可多向运动的音圈马达,包括用于装载镜头的装载组件1、罩设于装载组件1外侧的金属磁轭2、若干磁铁组3、偏转对焦线圈4、防抖线圈5、上弹簧6、下弹簧7、上垫片8以及下盖9。1 and 2, in accordance with a preferred embodiment of the present invention, a multi-directional moving voice coil motor includes a loading assembly for loading a lens, and a metal covering the outside of the loading assembly 1. The yoke 2, the magnet group 3, the deflection focus coil 4, the anti-shake coil 5, the upper spring 6, the lower spring 7, the upper spacer 8, and the lower cover 9.
上述装载组件1的外侧面上固定有至少两个沿装载组件1周向分布的防抖线圈5,防抖线圈5的绕线所在平面与装载组件1的轴线方向垂直。装载组件1的外侧面上还固定有至少两个偏转对焦线圈4,为了使装载组件1能绕两个方向(即分别绕X轴与Y轴)分别偏转,本实施例具有两组偏转对焦线圈4,每组偏转对焦线圈4包括两个分别固定在装载组件1相对的两外侧面上的偏转对焦线圈4,偏转对焦线圈4的绕线平面与装载组件1的轴线方向平行。At least two anti-shake coils 5 distributed along the circumferential direction of the loading unit 1 are fixed to the outer surface of the loading unit 1, and the plane of the winding of the anti-shake coil 5 is perpendicular to the axial direction of the loading unit 1. At least two deflection focus coils 4 are also fixed on the outer side surface of the loading assembly 1. In order to enable the loading assembly 1 to be deflected in two directions (i.e., respectively around the X axis and the Y axis), the present embodiment has two sets of deflection focus coils. 4. Each set of deflection focus coils 4 includes two deflection focus coils 4 respectively fixed to opposite outer faces of the loading assembly 1, and the winding plane of the deflection focus coils 4 is parallel to the axial direction of the loading assembly 1.
若干磁铁组3固定在所述金属磁轭2的内侧面上。请参见图3,一个防抖线圈5与一个偏转对焦线圈4共同对应一个磁铁组3。其中,磁铁组3面向装载组件1的一端为内端部,背向装载组件1的一端为外端部,内端部与外端部的极性相反;磁铁组3沿装载组件1的轴线方向分为上端部以及下端部,磁铁组3的上端部靠近偏转对焦线圈4的一侧面与下端部靠近偏转对焦线圈4的一侧面的极性相反。A plurality of magnet groups 3 are fixed to the inner side surface of the metal yoke 2. Referring to FIG. 3, an anti-shake coil 5 and a deflection focus coil 4 collectively correspond to a magnet group 3. Wherein, one end of the magnet group 3 facing the loading assembly 1 is an inner end portion, and one end facing away from the loading assembly 1 is an outer end portion, and the inner end portion and the outer end portion have opposite polarities; the magnet group 3 is along the axial direction of the loading assembly 1. Divided into an upper end portion and a lower end portion, the upper end portion of the magnet group 3 is opposite to the polarity of a side surface of the deflection focusing coil 4 close to the side surface of the deflection focusing coil 4.
偏转对焦线圈4对应于磁铁组3的内端部的端面,并且,偏转对焦线圈4的上横边41位于上端部的磁场内,偏转对焦线圈4的下横边42位于下端部的磁场内。防抖线圈5对应于磁铁组3的上端部的端面(在实际应用中,防抖线圈5还可以设置在对应于磁铁组3的下端部端面的位置),并且,防抖线圈5的左横边53位于磁铁组3外端部的磁场内,防抖线圈5的右横边54位于磁铁组3内端部的磁场内。The deflection focus coil 4 corresponds to the end surface of the inner end portion of the magnet group 3, and the upper lateral side 41 of the deflection focus coil 4 is located in the magnetic field of the upper end portion, and the lower lateral side 42 of the deflection focus coil 4 is located in the magnetic field of the lower end portion. The anti-shake coil 5 corresponds to the end surface of the upper end portion of the magnet group 3 (in practical applications, the anti-shake coil 5 can also be disposed at a position corresponding to the end surface of the lower end portion of the magnet group 3), and the left-hand side of the anti-shake coil 5 The side 53 is located in the magnetic field at the outer end of the magnet group 3, and the right lateral side 54 of the anti-shake coil 5 is located in the magnetic field at the inner end of the magnet group 3.
上述装载组件1的上端与上弹簧6固定连接,其下端与下弹簧7固定连接;上弹簧6与上垫片8连接,下弹簧7与下盖9连接,上垫片8与下盖9相互插接。下盖9具有用于与外界电路电连接的导电的端子91,防抖线圈5以及偏转对焦线圈4通过上弹簧6、下弹簧7以及上垫片8与下盖9的端子91电气连接。The upper end of the loading assembly 1 is fixedly connected to the upper spring 6, and the lower end thereof is fixedly connected to the lower spring 7; the upper spring 6 is connected to the upper spacer 8, the lower spring 7 is connected to the lower cover 9, and the upper spacer 8 and the lower cover 9 are mutually connected. Plug in. The lower cover 9 has a conductive terminal 91 for electrical connection with an external circuit, and the anti-shake coil 5 and the deflection focus coil 4 are electrically connected to the terminal 91 of the lower cover 9 via the upper spring 6, the lower spring 7, and the upper spacer 8.
具体地,上述磁铁组3是两块上下堆叠的普通磁铁(在实际应用中,也可以是一块沿垂直于装载组件1的轴线方向所在平面进行平面两极注磁的磁铁),如图所示,磁铁组3包括两块梯台状的上层磁铁31以及下层磁铁32,其中,上层磁铁31的内端部为S极,外端部为N极,而下层磁铁32的内端部为N极,外端部为S极。Specifically, the magnet group 3 is two ordinary magnets stacked on top of each other (in practical applications, a magnet that is magnetized in a plane perpendicular to the plane perpendicular to the axis of the loading assembly 1), as shown in the figure, The magnet group 3 includes two stepped upper layer magnets 31 and a lower layer magnet 32. The inner end portion of the upper layer magnet 31 is an S pole, the outer end portion is an N pole, and the inner end portion of the lower layer magnet 32 is an N pole. The outer end is an S pole.
上述装载组件1包括沿光轴方向上下叠置的载体11以及支架12,载体11与支架12为分体结构或者一体结构。于本实施例中,载体11与支架12为分体结构,所有的防抖线圈5固定在载体11上,并沿载体11的周向间隔分布;所有的偏转对焦线圈4固定在支架12上,并沿支架12的周向间隔分布。The loading assembly 1 includes a carrier 11 and a bracket 12 that are stacked one above another in the optical axis direction. The carrier 11 and the bracket 12 are in a separate structure or a unitary structure. In the present embodiment, the carrier 11 and the bracket 12 are in a separate structure, and all the anti-shake coils 5 are fixed on the carrier 11 and distributed along the circumferential direction of the carrier 11; all the deflection focusing coils 4 are fixed on the bracket 12, And distributed along the circumferential direction of the stent 12.
上述音圈马达包括两组防抖线圈5以及两组偏转对焦线圈4。其中,每组防抖线圈5包括两个相对设置的防抖线圈5,同一组的两个防抖线圈5相互串联或者并联连接,也可以各防抖线圈5之间无直接电气连接,各自分别与外界电路连接实现单独控制。每组偏转对焦线圈4包括两个相对设置的偏转对焦线圈4,同一组的两个偏转对焦线圈4相互串联或者并联连接,也可以各偏转对焦线圈4之间无直接电气连接,各自分别与外界电路连接实现单独控制。载体11四周缘延伸出四个均匀地分布的卡位(图中未示出),四个防抖线圈5分别卡置于四个卡位上。支架12的外周缘沿其周向延伸出四个均匀分布的卡条121,四个偏转对焦线圈4分别套设于卡条121上。The voice coil motor described above includes two sets of anti-shake coils 5 and two sets of deflection focus coils 4. Each of the anti-shake coils 5 includes two anti-shake coils 5 disposed oppositely, and the two anti-shake coils 5 of the same group are connected in series or in parallel, or there is no direct electrical connection between the anti-shake coils 5, respectively. Connect to external circuits for separate control. Each set of deflection focus coils 4 includes two oppositely disposed deflection focus coils 4. The two deflection focus coils 4 of the same group are connected in series or in parallel, or there may be no direct electrical connection between the deflection focus coils 4, respectively. The circuit connections are individually controlled. Four uniformly distributed card slots (not shown) extend around the periphery of the carrier 11, and the four anti-shake coils 5 are respectively placed on the four card slots. The outer circumference of the bracket 12 extends four circumferentially distributed strips 121 along the circumferential direction thereof, and the four deflection focus coils 4 are respectively sleeved on the strips 121.
当防抖线圈5通电时,磁铁组3可对两组防抖线圈5产生不同方向的力,本实施例中,这两个力的方向相互正交。这两个力所在的平面垂直于光轴(即载体11的轴线方向),这样就能推动载体11以及与其连接的部件在垂直于光轴所在平面内任意方向的可控运动,实现光学防抖功能。When the anti-shake coil 5 is energized, the magnet group 3 can generate forces in different directions for the two sets of anti-shake coils 5. In the present embodiment, the directions of the two forces are orthogonal to each other. The planes of the two forces are perpendicular to the optical axis (ie, the axial direction of the carrier 11), so that the carrier 11 and the components connected thereto can be pushed in a controlled motion in any direction perpendicular to the plane of the optical axis to achieve optical image stabilization. Features.
当向各个偏转对焦线圈4通入大小相同的电流时,各个偏转对焦线圈4上横边41以及下横边42相当于一根导电体,上横边41、下横边42分别受到上层磁铁31、下层磁铁32的磁场影响,从而受到与支架12的轴线方向平行的作用力,由于上横边41、下横边42内的电流方向相反,而各自受到的磁场的方向也相反,所以,整个磁铁组3对各个偏转对焦线圈4的作用力的大小以及方向是相同的,此时,磁铁组3可以推动支架12及与其连接的部件沿着光轴方向(即支架12的轴线方向)上下移动,实现自动对焦功能。当向同一组的两个偏转对焦线圈4分别通入大小或方向不同的电流时,支架12两侧的偏转对焦线圈4受到的力的大小或方向不同,从而支架12沿X/Y轴发生偏转,实现光轴校准以及矫正。When a current of the same magnitude is supplied to each of the deflection focus coils 4, the lateral side 41 and the lower lateral side 42 of each of the deflection focus coils 4 correspond to one conductor, and the upper lateral side 41 and the lower lateral side 42 are respectively received by the upper layer magnet 31. The magnetic field of the lower layer magnet 32 is affected by the magnetic field in the axial direction of the bracket 12, and the direction of the magnetic field in the upper lateral side 41 and the lower lateral side 42 is opposite, so that the direction of the magnetic field is opposite, so the whole The magnitude and direction of the force of the magnet group 3 on each of the deflection focus coils 4 are the same. At this time, the magnet group 3 can push the bracket 12 and the member connected thereto to move up and down along the optical axis direction (ie, the axial direction of the bracket 12). , to achieve auto focus function. When currents of different magnitudes or directions are respectively transmitted to the two deflection focus coils 4 of the same group, the magnitude or direction of the force received by the deflection focus coil 4 on both sides of the bracket 12 is different, so that the bracket 12 is deflected along the X/Y axis. , to achieve optical axis calibration and correction.
为了使上弹簧6以及下弹簧7具备导电功能,上弹簧6以及下弹簧7上均设置有导电线路(在实际应用中,上弹簧6与下弹簧7整体为金属材质,例如材料为铜或者铜合金)。所述防抖线圈5以及偏转对焦线圈4均与所述上弹簧6、下弹簧7上的导电线路电气连接。上垫片8延伸出导电的插脚81,上弹簧6的导电线路与上垫片8的插脚81电气连接,下弹簧7的导电线路与下盖9的端子91电气连接;下盖9上开设有避让孔92,当上垫片8与下盖9相互插接时,插脚81穿出下盖9的避让孔92,从而能与外界电路电气连接。In order to provide the upper spring 6 and the lower spring 7 with a conductive function, the upper spring 6 and the lower spring 7 are each provided with a conductive line (in practical applications, the upper spring 6 and the lower spring 7 are entirely made of a metal material, for example, copper or copper. alloy). The anti-shake coil 5 and the deflection focus coil 4 are electrically connected to the conductive lines on the upper spring 6 and the lower spring 7. The upper gasket 8 extends out of the conductive pin 81, the conductive line of the upper spring 6 is electrically connected to the pin 81 of the upper gasket 8, and the conductive line of the lower spring 7 is electrically connected to the terminal 91 of the lower cover 9; the lower cover 9 is opened When the upper spacer 8 and the lower cover 9 are inserted into each other, the pin 81 passes through the escape hole 92 of the lower cover 9 so as to be electrically connected to an external circuit.
请参见图4,上述上弹簧6包括四个沿装载组件1周向交错分布的连接单元,每一连接单元单元均包括上外臂61、上中间臂62、上内臂63以及连接于三者之间的上弹簧臂64。上外臂61贴合固定在上垫片8上,上中间臂62贴合在支架12的上端面上,上内臂63贴合固定在载体11上端面上,并与防抖线圈5以及偏转对焦线圈4电气连接。Referring to FIG. 4, the upper spring 6 includes four connecting units staggered along the circumferential direction of the loading assembly 1, each connecting unit unit including an upper outer arm 61, an upper intermediate arm 62, an upper inner arm 63, and three connected Between the upper spring arms 64. The upper outer arm 61 is fixedly attached to the upper spacer 8, and the upper intermediate arm 62 is attached to the upper end surface of the bracket 12. The upper inner arm 63 is fixedly attached to the upper end surface of the carrier 11, and is coupled to the anti-shake coil 5 and the deflection. The focus coil 4 is electrically connected.
请参见图5,上述下弹簧7包括八个沿装载组件1周向交错分布的连接单元,每一连接单元单元均包括依次连接的下外臂71、下弹簧臂72以及下内臂73。下外臂71贴合固定在下盖9上,下弹簧臂72贴合在支架12的下端面上,下内臂73贴合固定在载体11下端面上,并与防抖线圈5以及偏转对焦线圈4电气连接。Referring to FIG. 5, the lower spring 7 includes eight connecting units which are alternately distributed along the circumferential direction of the loading assembly 1, and each of the connecting unit units includes a lower outer arm 71, a lower spring arm 72 and a lower inner arm 73 which are sequentially connected. The lower outer arm 71 is fixedly attached to the lower cover 9, the lower spring arm 72 is attached to the lower end surface of the bracket 12, and the lower inner arm 73 is fixedly attached to the lower end surface of the carrier 11, and is coupled to the anti-shake coil 5 and the deflection focus coil. 4 electrical connections.
本实施例的可多向运动的音圈马达,其装载组件1外侧罩设有金属磁轭2,磁铁组3固定安装在金属磁轭2内侧面上;装载组件1以及所有线圈通过上弹簧6和下弹簧7悬挂在金属磁轭2内,金属磁轭2能够屏蔽外界磁场,防止外界的磁干扰。In the multi-directional moving voice coil motor of the embodiment, the outer side cover of the loading assembly 1 is provided with a metal yoke 2, and the magnet group 3 is fixedly mounted on the inner side surface of the metal yoke 2; the loading assembly 1 and all the coils pass through the upper spring 6 The lower spring 7 is suspended in the metal yoke 2, and the metal yoke 2 can shield the external magnetic field from external magnetic interference.
本实施例的马达机构体积小、结构简单,其中多个线圈可串联或者并联,组成至少三组以上独立工作的线圈组,能控制镜头沿三个自由度方向(X、Y以及Z方向)的运动以及绕X/Y轴方向的偏转,可以自动对焦、光学防抖,还能纠正由于组装或者实现对焦或者防抖时所产生的镜头与图像传感器的偏角,也可以克服双摄像头模组的主摄像头与副摄像头光轴之间的对准,最终提升手机等电子设备的摄像头拍照功能的整体品质效果。另外多轴马达在模组生产过程中,完全可以取消AA机台,是颠覆性革命,大大节省对生产设备的依赖,降低生产成本,提高生产效率。The motor mechanism of the embodiment has a small volume and a simple structure, wherein a plurality of coils can be connected in series or in parallel to form at least three sets of independently working coil groups, which can control the lens in three degrees of freedom (X, Y and Z directions). Movement and deflection around the X/Y axis can autofocus, optical image stabilization, and correct the off-angle of the lens and image sensor caused by assembly or focus or anti-shake, and can also overcome the dual camera module The alignment between the main camera and the optical axis of the sub-camera ultimately improves the overall quality of the camera function of the electronic device such as a mobile phone. In addition, the multi-axis motor can completely cancel the AA machine in the module production process, which is a disruptive revolution, greatly reducing the dependence on production equipment, reducing production costs and improving production efficiency.
本实施例还提供了一种双摄双光学防抖模组,包括两个可多向运动的音圈马达。本实施例中的载体11以及支架12可以采用塑料制作,由于运动部件没有磁铁,重量轻,功耗低,不易受到外界磁场的影响。所以,位置靠近的两个马达之间亦不会产生相互的磁场干扰,将该马达应用在双摄双光学防抖模组中,可使模组具备光学防抖功能。The embodiment also provides a dual-camera dual optical anti-shake module, comprising two multi-directional moving voice coil motors. The carrier 11 and the bracket 12 in this embodiment can be made of plastic. Since the moving parts have no magnet, the weight is light, the power consumption is low, and the external magnetic field is not easily affected. Therefore, there is no mutual magnetic field interference between the two motors located close to each other. The motor is applied to the dual-camera dual optical anti-shake module, so that the module can have an optical anti-shake function.
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。The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. Within the scope.

Claims (10)

  1. 一种可多向运动的音圈马达,其特征在于,包括用于装载镜头的装载组件、罩设于装载组件外侧的金属磁轭、若干磁铁组、上弹簧、下弹簧、上垫片以及下盖; A multi-directional moving voice coil motor, comprising: a loading assembly for loading a lens, a metal yoke covering the outside of the loading assembly, a plurality of magnet sets, an upper spring, a lower spring, an upper spacer, and a lower cover;
    所述装载组件的外侧面上固定有至少两个沿装载组件周向分布的防抖线圈,所述防抖线圈的绕线所在平面与所述装载组件的轴线方向垂直;所述装载组件的外侧面上还固定有至少两个偏转对焦线圈,所述偏转对焦线圈的绕线平面与所述装载组件的轴线方向平行;The outer side of the loading assembly is fixed with at least two anti-shake coils distributed along the circumferential direction of the loading assembly, the plane of the winding of the anti-shake coil is perpendicular to the axial direction of the loading assembly; At least two deflection focus coils are further fixed on the side, and the winding plane of the deflection focus coil is parallel to the axial direction of the loading assembly;
    所述若干磁铁组固定在所述金属磁轭的内侧面上,一个防抖线圈与一个偏转对焦线圈共同对应一个磁铁组;其中,所述磁铁组面向所述装载组件的一端为内端部,背向所述装载组件的一端为外端部,所述内端部与外端部的极性相反;所述磁铁组沿所述装载组件的轴线方向分为上端部以及下端部,所述磁铁组的上端部靠近偏转对焦线圈的一侧面与下端部靠近偏转对焦线圈的一侧面的极性相反;The magnet group is fixed on an inner side surface of the metal yoke, and an anti-shake coil and a deflection focus coil jointly correspond to a magnet group; wherein an end of the magnet group facing the loading assembly is an inner end portion, One end facing away from the loading assembly is an outer end portion, and the inner end portion is opposite in polarity to the outer end portion; the magnet group is divided into an upper end portion and a lower end portion along an axial direction of the loading assembly, the magnet The upper end of the group is opposite to a side of the deflection focus coil and the lower end is opposite to a side of the deflection focus coil;
    所述偏转对焦线圈对应于所述磁铁组的内端部的端面,并且,所述偏转对焦线圈的上横边位于上端部的磁场内;所述偏转对焦线圈的下横边位于下端部的磁场内;所述防抖线圈对应于所述磁铁组的上端部或下端部的端面,并且,所述防抖线圈的左横边位于所述磁铁组外端部的磁场内,所述防抖线圈的右横边位于所述磁铁组内端部的磁场内;The deflection focus coil corresponds to an end surface of an inner end portion of the magnet group, and an upper lateral side of the deflection focus coil is located in a magnetic field of an upper end portion; a magnetic field of a lower lateral side of the deflection focus coil is located at a lower end portion The anti-shake coil corresponds to an end surface of an upper end portion or a lower end portion of the magnet group, and a left lateral side of the anti-shake coil is located in a magnetic field at an outer end portion of the magnet group, and the anti-shake coil The right lateral side is located in the magnetic field at the inner end of the magnet group;
    所述装载组件的上端与所述上弹簧固定连接,其下端与所述下弹簧固定连接;所述上弹簧与所述上垫片连接,所述下弹簧与所述下盖连接,所述上垫片与下盖相互插接;所述下盖具有用于与外界电路电连接的端子,所述防抖线圈以及偏转对焦线圈通过所述上弹簧、下弹簧以及上垫片与所述下盖的端子电气连接。An upper end of the loading assembly is fixedly coupled to the upper spring, a lower end thereof is fixedly coupled to the lower spring; the upper spring is coupled to the upper gasket, and the lower spring is coupled to the lower cover, the upper portion The spacer and the lower cover are mutually inserted; the lower cover has a terminal for electrically connecting with an external circuit, and the anti-shake coil and the deflection focus coil pass the upper spring, the lower spring, and the upper gasket and the lower cover The electrical connection of the terminals.
  2. 如权利要求1所述的可多向运动的音圈马达,其特征在于,所述磁铁组为一块沿垂直于装载组件的轴线方向所在平面进行平面两极注磁的磁铁,也可以是两块上下堆叠的普通磁铁。The multi-directional moving voice coil motor according to claim 1, wherein the magnet group is a magnet that is magnetized in a plane perpendicular to the plane of the loading assembly, or two magnets. Stacked ordinary magnets.
  3. 如权利要求1所述的可多向运动的音圈马达,其特征在于,所述装载组件包括沿音圈马达的光轴方向上下叠置的载体以及支架,所述载体与支架为分体结构或者一体结构;所有的防抖线圈固定在所述载体上,并沿载体的周向间隔分布;所有的偏转对焦线圈固定在所述支架上,并沿支架的周向间隔分布。A multi-directional motion voice coil motor according to claim 1, wherein said loading assembly comprises a carrier and a bracket stacked one above another in the optical axis direction of the voice coil motor, said carrier and the bracket being of a separate structure Or a unitary structure; all of the anti-shake coils are fixed on the carrier and distributed along the circumferential direction of the carrier; all of the deflection focus coils are fixed on the bracket and distributed along the circumferential direction of the bracket.
  4. 如权利要求3所述的可多向运动的音圈马达,其特征在于,所述音圈马达包括至少两组防抖线圈,其中,每组防抖线圈包括两个相对设置的防抖线圈,同一组的两个防抖线圈相互串/并联连接或者各自与外界控制电路连接;所述两组防抖线圈中的四个防抖线圈均匀地分布于所述载体的外周缘。A multi-directional motion voice coil motor according to claim 3, wherein said voice coil motor comprises at least two sets of anti-shake coils, wherein each set of anti-shake coils comprises two oppositely disposed anti-shake coils. The two anti-shake coils of the same group are connected in series/parallel with each other or each connected to an external control circuit; four of the two sets of anti-shake coils are evenly distributed on the outer circumference of the carrier.
  5. 如权利要求3所述的可多向运动的音圈马达,其特征在于,所述音圈马达包括两组偏转对焦线圈,其中,每组偏转对焦线圈包括两个相对设置的偏转对焦线圈,同一组的两个偏转对焦线圈相互串/并联连接或者各自与外界控制电路连接;所述两组偏转对焦线圈中的四个偏转对焦线圈均匀地分布于所述支架的外周缘。A multi-directional motion voice coil motor according to claim 3, wherein said voice coil motor comprises two sets of deflection focus coils, wherein each set of deflection focus coils comprises two oppositely disposed deflection focus coils, the same The two deflection focus coils of the group are connected in series/parallel to each other or to each of the external control circuits; four of the two sets of deflection focus coils are evenly distributed on the outer circumference of the bracket.
  6. 如权利要求3所述的可多向运动的音圈马达,其特征在于,所述支架的外周缘沿其周向延伸出四个均匀分布的卡条,所述偏转对焦线圈套设于所述卡条上。The multi-directional moving voice coil motor according to claim 3, wherein the outer periphery of the bracket extends four circumferentially distributed strips along a circumferential direction thereof, and the deflecting focus coil is sleeved on the On the card.
  7. 如权利要求1至6中任意一项所述的可多向运动的音圈马达,其特征在于,所述上弹簧以及下弹簧上均设置有导电线路,所述防抖线圈以及偏转对焦线圈均与所述上弹簧、下弹簧上的导电线路电气连接;所述上垫片延伸出导电的插脚,所述上弹簧的导电线路与所述上垫片的插脚电气连接,所述下弹簧的导电线路与所述下盖的端子电气连接;所述下盖上开设有避让孔,当上垫片与下盖相互插接时,所述插脚穿出所述下盖的避让孔。The multi-directional moving voice coil motor according to any one of claims 1 to 6, wherein the upper spring and the lower spring are each provided with a conductive line, and the anti-shake coil and the deflection focus coil are both Electrically connecting with the conductive line on the upper spring and the lower spring; the upper spacer extends out of the conductive pin, the conductive line of the upper spring is electrically connected to the pin of the upper pad, and the conductive of the lower spring The circuit is electrically connected to the terminal of the lower cover; the lower cover is provided with a relief hole, and when the upper gasket and the lower cover are inserted into each other, the pin passes through the escape hole of the lower cover.
  8. 如权利要求3至6中任意一项所述的可多向运动的音圈马达,其特征在于,所述上弹簧包括四个沿装载组件周向交错分布的连接单元,每一连接单元单元均包括上外臂、上中间臂、上内臂以及连接于三者之间的上弹簧臂,所述上外臂贴合固定在所述上垫片上,所述上中间臂贴合在所述支架的上端面上,所述上内臂贴合固定在所述载体上端面上,并与所述防抖线圈以及偏转对焦线圈电气连接。A multi-directional moving voice coil motor according to any one of claims 3 to 6, wherein said upper spring comprises four connecting units which are staggered in the circumferential direction of the loading assembly, each connecting unit unit The upper outer arm, the upper middle arm, the upper inner arm, and an upper spring arm connected between the three, the upper outer arm is fixedly attached to the upper spacer, and the upper intermediate arm is attached to the On the upper end surface of the bracket, the upper inner arm is fixedly attached to the upper end surface of the carrier, and is electrically connected to the anti-shake coil and the deflection focus coil.
  9. 如权利要求3至6中任意一项所述的可多向运动的音圈马达,其特征在于,所述下弹簧包括八个沿装载组件周向交错分布的连接单元,每一连接单元单元均包括下外臂、下弹簧臂以及下内臂,所述下外臂贴合固定在所述下盖上,所述下弹簧臂贴合在所述支架的下端面上,所述下内臂贴合固定在所述载体下端面上,并与所述防抖线圈以及偏转对焦线圈电气连接。A multi-directional moving voice coil motor according to any one of claims 3 to 6, wherein said lower spring comprises eight connecting units which are staggered in the circumferential direction of the loading assembly, each connecting unit unit The lower outer arm is attached to the lower cover, the lower outer arm is attached to the lower cover, and the lower inner arm is attached to the lower end surface of the bracket, and the lower inner arm is attached The unit is fixed to the lower end surface of the carrier and electrically connected to the anti-shake coil and the deflection focus coil.
  10. 一种双摄双光学防抖模组,其特征在于,包括两个如权利要求1至9中任意一项所述的可多向运动的音圈马达。A dual camera dual optical anti-shake module comprising two multi-directional motion voice coil motors as claimed in any one of claims 1 to 9.
PCT/CN2017/090294 2017-06-27 2017-06-27 Multi-directionally movable voice coil motor, and dual-camera and dual-optical anti-vibration module WO2019000214A1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110038066A1 (en) * 2007-06-05 2011-02-17 Tricore Corporation Voice coil motor type focusing actuator
CN103185942A (en) * 2011-12-29 2013-07-03 鸿富锦精密工业(深圳)有限公司 Camera lens module
CN104407487A (en) * 2014-12-19 2015-03-11 深圳市世尊科技有限公司 Voice coil motor capable of realizing OIS (optical image stabilization) through pure translational motion

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110038066A1 (en) * 2007-06-05 2011-02-17 Tricore Corporation Voice coil motor type focusing actuator
CN103185942A (en) * 2011-12-29 2013-07-03 鸿富锦精密工业(深圳)有限公司 Camera lens module
CN104407487A (en) * 2014-12-19 2015-03-11 深圳市世尊科技有限公司 Voice coil motor capable of realizing OIS (optical image stabilization) through pure translational motion

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