WO2017152385A1 - 抗磁干扰的微型五轴式光学防抖音圈马达结构 - Google Patents
抗磁干扰的微型五轴式光学防抖音圈马达结构 Download PDFInfo
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- WO2017152385A1 WO2017152385A1 PCT/CN2016/075933 CN2016075933W WO2017152385A1 WO 2017152385 A1 WO2017152385 A1 WO 2017152385A1 CN 2016075933 W CN2016075933 W CN 2016075933W WO 2017152385 A1 WO2017152385 A1 WO 2017152385A1
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- coil
- magnet
- voice coil
- motor structure
- coil motor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
Definitions
- the present invention discloses a voice coil motor, and more particularly, a miniature five-axis optical anti-shake voice coil motor structure that is resistant to magnetic interference.
- the micro lens tilt type optical anti-shake voice coil motor can support three-dimensional focusing, shift-axis photography, and optical axis tilt compensation of autofocus, in addition to autofocus and optical image stabilization. Special effects of photography.
- the lens tilt motor may exhibit significant edge blur during optical image stabilization.
- the five-axis motor requires a multi-degree of freedom mechanical structure and multi-actuator drive, these motor structures are very complicated, which is disadvantageous for production and reliability.
- the magnets of the five-axis motor are in an active structure, the five-axis motor is susceptible to external magnetic fields during operation.
- the present invention provides a simplified five-axis optical anti-magnetic interference structure.
- the vibrating ring motor structure can increase production efficiency and pass rate, and reduce production costs.
- the present invention also solves the disadvantage that the magnets of the conventional voice coil motor are in a movable structure and are susceptible to external magnetic fields.
- the present invention solves the above problems by arranging a magnet in a stationary structure.
- the technical solution adopted by the present invention to solve the technical problem is: a miniature five-axis optical anti-shake voice coil motor structure with magnetic interference resistance, the voice coil motor structure includes a casing and a magnet and a lens disposed inside the casing
- the carrier, the resetting device, the coil set and the base are fixedly mounted together with the base.
- the magnet is provided with three or more sets, each set of magnets includes at least one magnet, the magnet is fixedly mounted on the inner wall of the outer casing, and the coil set is provided with at least three groups.
- Each set of coil sets is disposed opposite to a set of magnets, each set of coils comprising at least two independent coils, the coil set is fixedly mounted on the outer wall of the lens carrier, the lens carrier is disposed in the outer casing, and the mechanical connection between the outer casing and the lens carrier is reset.
- Device Each set of coil sets is disposed opposite to a set of magnets, each set of coils comprising at least two independent coils, the coil set is fixedly mounted on the outer wall of the lens carrier, the lens carrier is disposed in the outer casing, and the mechanical connection between the outer casing and the lens carrier is reset.
- the technical solution adopted by the present invention to solve the technical problem thereof further includes:
- Each of the sets of magnets comprises two pieces, an upper magnet and a lower magnet, and the magnetic poles of the upper magnet and the lower magnet are oppositely disposed.
- the outer casing is rectangular, the magnet is selected from three sets of cymbals, and the three sets of magnets are respectively disposed at any three sides or any three angular positions of the outer casing; the magnet is selected from four sets of cymbals, and the four sets of magnets are respectively disposed on the outer casing. Four or four corner positions.
- the resetting device adopts a spring piece, and the elastic piece is provided with one or two pieces, and when it is set as two elastic pieces, they are respectively an upper elastic piece and a lower elastic piece.
- the coil has a total of at least five independent circuits.
- the base is provided with a conductive portion for electrical connection with the outside, and the conductive portion is exposed on the surface of the base.
- the base extends upwardly from the post, and a corresponding slot is disposed on the outer wall of the lens carrier, and the card post is inserted into the card slot.
- the corresponding position of the periphery of the elastic piece is provided with a through hole, and the post is inserted into the card slot through the through hole.
- a pressure ring is further disposed between the reset device and the base, and the pressure ring is clamped on the reset device, and the top surface of the pressure ring is fixedly connected with the reset device.
- the beneficial effects of the present invention are: a five-axis optical anti-shake voice coil motor structure with magnetic interference resistance of the present invention, comprising at least one elastic piece, three sets of magnets and at least three sets of coils, which can simultaneously support three-dimensional automatic Focus, shift-axis photography, and optical image stabilization, and support for adjustment by motor control Improve the resolution of the edges of the image at different focus strokes.
- the invention only needs at least one piece of elastic piece to mechanically and electrically connect the fixed structure with the lens carrier and the coil, does not require a more complicated mechanism structure, simplifies the motor structure, and is advantageous for production and reliability.
- the magnet is mounted on the inner wall of the outer casing and is a stationary structure, so the voice coil motor is less susceptible to external magnetic fields during operation.
- FIG. 1 is a schematic perspective view of a first embodiment of the present invention.
- FIG. 2 is a schematic structural diagram of an exploded state according to an embodiment of the present invention.
- FIG. 3 is a schematic top plan view of an embodiment of the present invention.
- FIG. 4 is a schematic cross-sectional view of the A-A of FIG. 3.
- FIG. 5 is a schematic structural view of a coil assembly according to an embodiment of the present invention.
- FIG. 6 is a schematic cross-sectional view of the B-B of FIG. 5.
- FIG. 7 is a schematic view showing current flow of a coil group according to an embodiment of the present invention.
- FIG. 8 is a schematic view showing a current flow direction and an electromagnetic force of a B-B cross-section coil group of FIG. 7.
- FIG. 9 is a schematic diagram of current flow of a first coil according to an embodiment of the present invention.
- FIG. 10 is a schematic view showing current flow and electromagnetic force of the first coil in the B-B cross-sectional direction of FIG. 9 (only partial magnetic fields are shown in the figure).
- FIG. 11 is a schematic view showing a current flow of a second coil according to an embodiment of the present invention.
- FIG. 12 is a schematic view showing the current flow and electromagnetic force of the second coil in the B-B cross-sectional direction of FIG. 11 (only the partial magnetic field is shown in the figure).
- FIG. 13 is a schematic cross-sectional structural view of a focus ⁇ according to an embodiment of the present invention.
- FIG. 14 is a schematic cross-sectional structural view of a tilting axis of a shifting axis according to an embodiment of the present invention.
- 15 is a schematic cross-sectional structural view of a translational cymbal according to an embodiment of the present invention.
- FIG. 16 is a schematic structural view of a coil assembly according to an embodiment of the present invention.
- 17 is a schematic cross-sectional view of the B-B of FIG. 16.
- FIG. 18 is a schematic view showing current flow of a coil group according to a second embodiment of the present invention.
- FIG. 19 is a schematic view showing a current flow direction and an electromagnetic force of a B-B cross-section coil group of FIG. 18.
- 20 is a schematic diagram showing current flow of a first coil according to Embodiment 2 of the present invention.
- 21 is a schematic view showing the flow direction of the second coil and the electromagnetic force in the BB cross-section of FIG. 20 (only partial magnetic fields are shown in the figure).
- FIG. 22 is a schematic diagram of a second coil current flow according to Embodiment 2 of the present invention.
- FIG. 23 is a schematic view showing the flow direction of the second coil and the electromagnetic force in the B-B cross-sectional direction of FIG. 22 (only the partial magnetic field is shown in the figure).
- FIG. 24 is a schematic top plan view of a third embodiment of the present invention.
- 25 is a schematic cross-sectional view of the C-C of FIG. 24.
- the present embodiment is a preferred embodiment of the present invention, and other principles and basic structures thereof are the same as or similar to those of the present embodiment, and are all within the protection scope of the present invention.
- the present invention is a five-axis optical anti-shake voice coil motor structure that is resistant to magnetic interference, and mainly includes a housing 1 and a magnet disposed inside the housing, a lens carrier 6, a reset device, a coil, and a base 5,
- the outer casing 1 and the base 5 are fixedly mounted together to form an external support structure of the present invention.
- the magnets are provided with three or more sets, and each set of magnets includes at least one magnet. In this embodiment, each set of magnets is taken as an example, respectively.
- the upper magnet 10 and the lower magnet 11, the magnetic poles of the upper magnet 10 and the lower magnet 11 are opposed to each other.
- the outer casing 1 is square, the magnet is selected from three sets of cymbals, and the three sets of magnets can be respectively disposed at any three sides or any three angular positions of the outer casing 1; the magnets are selected from four sets of cymbals, and the four sets of magnets can be respectively set. At the four sides or four angular positions of the outer casing 1; the magnets are selected from a plurality of sets, and may be disposed at the side or angular position of the outer casing 1 according to actual conditions.
- the outer casing 1 can also adopt a circular shape. When a circular crucible is used, each set of magnets can be evenly distributed in the outer casing 1.
- the magnet can be specifically set according to actual conditions.
- the magnet is fixedly mounted on the inner wall of the outer casing 1, and the outer casing 1, the magnet and the base 5 constitute the fixed structure of the present invention.
- the coil is formed by winding a power line, or a flexible circuit board (FPC), each coil has a first line end and a second line end, and at least two independent coils form a group of coil groups.
- the coil set is provided with at least three sets, each set of coil sets being disposed opposite to a set of magnets.
- the coil set is fixedly mounted on the outer wall of the lens carrier 6, and the lens carrier 6 is disposed in the outer casing 1.
- a reset device is mechanically connected between the immovable structure and the lens carrier 6.
- the reset device adopts a spring piece, and the elastic piece can be provided with one or two, when set as two elastic pieces, respectively
- the upper elastic piece 3 and the lower elastic piece 4 the upper elastic piece 3 is mechanically connected with the lens carrier 6 and the outer casing 1, but it is not used as a power supply, and only serves as a fixed elastic piece, and the lower elastic piece 4 may include a plurality of electrical paths, each of which has at least one electrical path and at least One coil is electrically connected as an energized shrapnel.
- all the coils have a total of at least five independent circuits (if the two coils are electrically connected in series in the motor, they are only regarded as a single circuit), and at least five different directions and sizes of current can be allowed to pass through the coil, thereby Five-axis control is achieved; after each independent circuit is energized, the direction and position of the electromagnetic force of each coil can be different from the electromagnetic force of other coils.
- the base 5 is provided with a conductive portion (not shown) for electrically connecting with the outside, and the conductive portion is exposed on the surface of the base 5, and the coil and the conductive portion are electrically connected via the elastic piece.
- the outer casing 1 or the magnet may be electrically connected to the elastic piece and the base 5 as a bridge for electrically connecting the coil and the outside.
- the outer casing 1 is disposed on the base 5, and the base 5 extends upwardly from the post (not shown), and the corresponding position on the outer wall of the lens carrier 6 is provided with a card slot (not shown)
- the corresponding position of the periphery of the shrapnel is provided with a through hole (not shown), and the post is inserted into the card slot through the through hole.
- a pressure ring is further disposed between the lower elastic piece 4 and the base 5, and the pressure ring 2 is sandwiched on the lower elastic piece 4, and the top surface of the pressure ring 2 is fixedly connected with the lower elastic piece 4.
- each group of coils on the lens carrier 6 may be assembled and assembled by mechanically connecting each set of coils and the lens carrier 6 to each of the coils and the lens carrier 6 that have been pre-wound. Mechanically connect or wind the wire directly around the boss on the outer wall of the lens carrier 6 (not shown).
- the anti-magnetic interference micro-five-type optical anti-shake voice coil motor structure of the invention can simultaneously support three-dimensional focusing, optical axis tilt compensation of auto focus, and optical anti-shake function, compared with other miniature five
- the shaft type optical anti-shake voice coil motor structure can effectively simplify the structure of the motor, reduce the difficulty of production, and facilitate full-automatic mass production. Therefore, its structure and process can improve production efficiency and yield, reduce production and material costs, and facilitate production.
- Embodiment 1 Referring to FIG. 1 to FIG. 15 , in this embodiment, a housing 1 and a magnet, a lens carrier 6 , a reset device, a coil and a base 5 disposed inside the housing are provided, and the housing 1 and the housing 1 are The base 5 is fixedly mounted together to form an external support structure of the present invention.
- the outer casing 1 has a rectangular cross section, and the magnet and the coil are correspondingly arranged in four groups, and each set of magnets comprises two blocks, namely an upper magnet 10 and a lower magnet 11, respectively.
- the magnetic poles of the magnet 10 and the lower magnet 11 are oppositely disposed.
- the magnet is fixedly mounted on the inner wall of the outer casing 1.
- the coil is wound by an electric wire, each coil has a first wire end and a second wire end, and at least two independent coils form a group of coils, and the coil group is fixedly mounted on the outer wall of the lens carrier 6.
- the lens carrier 6 is disposed inside the casing 1.
- the elastic piece 3 and the lower elastic piece 4 are mechanically connected between the fixed structure and the lens carrier 6, and the upper elastic piece 3 is mechanically connected with the lens carrier 6 and the outer casing 1, but it is not used as a power supply, but only as a fixed elastic piece.
- the lower spring piece 4 may include a plurality of electrical paths, each of which is electrically connected to at least one of the coils as an energized spring piece.
- all the coils have a total of at least five independent circuits (if the two coils are electrically connected in series in the motor, they are only regarded as a single circuit), and at least five different directions and sizes of current can be allowed to pass through the coil, thereby Five-axis control is achieved; after each independent circuit is energized, the direction and position of the electromagnetic force of each coil can be different from the electromagnetic force of other coils.
- the base 5 is provided with a conductive portion (not shown) for electrically connecting with the outside, and the conductive portion is exposed on the surface of the base 5, and the coil and the conductive portion are electrically connected via the elastic piece.
- the outer casing 1 or the magnet may be electrically connected to the elastic piece and the base 5 as a bridge for electrically connecting the coil and the outside.
- the outer casing 1 is disposed on the base 5, and the base 5 extends upwardly from the post (not shown), and the corresponding position on the outer wall of the lens carrier 6 is provided with a card slot (not shown)
- the corresponding position of the periphery of the shrapnel is provided with a through hole (not shown), and the post is inserted into the card slot through the through hole.
- a pressure ring is further disposed between the lower elastic piece 4 and the base 5, and the pressure ring 2 is sandwiched on the lower elastic piece 4, and the top surface of the pressure ring 2 is fixedly connected with the lower elastic piece 4.
- the lower elastic piece 4 includes eight electrical paths, each electrical path is electrically connected to one coil;
- the upper elastic piece 3 includes an electrical path, and is connected to eight coils and a conductive outer casing; two independent coils form a The coils, each of the independent coils and the other coils are not connected in series;
- the base 5 is provided with a conductive portion for electrical connection with the outside, and the conductive portion connects the eight electrical paths in the outer casing 1 and the lower elastic piece 4, and is exposed on the surface of the base.
- connection housing 1 constitutes a ground line for the current of each coil to flow back to the external component; the external component can control the current direction and size of each coil by changing the voltage of the eight electrical paths to achieve five-axis control .
- two independent coils constitute a coil group, and the first coil 14 and the second coil 15 are included.
- the first coil 14 is a rectangular coil
- the second coil 15 is a figure eight coil.
- the direction of the first coil electromagnetic force 20 is substantially parallel to the optical axis 12
- the direction of the second coil electromagnetic force 21 is substantially perpendicular to the optical axis 12
- the current of the coil can change the direction and magnitude of the total electromagnetic force of the coil assembly.
- Each group of coils may be composed and assembled by mechanically connecting each set of coils (flexible printed Coils) composed of a flexible circuit board to the lens carrier, or mechanically connecting each set of coils and lens carriers that have been pre-wound.
- the wire is wound directly around the boss on the outer wall of the lens carrier.
- the directions of the electromagnetic forces (F, F 2 , F 3 , and F 4 ) of the coil groups 1 to 4 are all parallel to the optical axis 12, the magnitudes of the four electromagnetic forces are uniform, so The lens carrier 6 is displaced in the direction of the optical axis 12 to achieve a focusing effect.
- the magnitude of the electromagnetic force and the tilting of the lens carrier 6 are as follows. First, all the electromagnetic forces (Fp F 2 , F 3 , and F 4 ) are uniform in size, and the optical axis is the same. 12 does not tilt, and then, the electromagnetic force of the first coil group 7 and the third coil group 9 is changed, that is, the electromagnetic force 28 (F,) becomes larger, the electromagnetic force 29 (F 3 ) becomes smaller, and the two forces change. The amount is consistent and the remaining F 2 and F 4 are unchanged. Finally, the lens carrier 6 and the optical axis 12 rotate around the spring center 13 in the direction of R y counterclockwise, but no displacement occurs, and the effect of tilting the axis is achieved.
- This method of controlling the tilt of the shifting axis can achieve three-dimensional focusing.
- the tilt of the optical axis can also be reduced by controlling the tilt of the tilt axis.
- the above three control modes that is, focus control, shift axis tilt control, and pan control, can occur simultaneously, achieving different one to three-dimensional focus, shifting axis shooting, and optical image stabilization effects, improving image quality. Or the fun of shooting.
- Embodiment 2 Referring to FIG. 16 to FIG. 23, the structure of this embodiment is basically the same as that of Embodiment 1, except that in this embodiment, the second coil 15 has a rectangular shape, and the second coil is 15 is smaller than the first coil 14, and the second coil 15 is positioned higher than the first coil 14 and closer to the upper magnet 10.
- the first coil 14 is energized, the direction of the first coil electromagnetic force 20 is substantially parallel to the optical axis 12; when the second coil 15 is energized, the direction of the second coil electromagnetic force 21 is substantially perpendicular to the optical axis 12;
- the current of the coil can change the direction and magnitude of the total electromagnetic force of the coil assembly.
- each coil wire end 1 is respectively connected to one circuit of the lower spring, and the lower spring has a total of eight circuits and eight coils.
- the wire end 2 is connected to the spring as a common end.
- the common terminal can be electrically connected to the external power source or grounded.
- Embodiment 3 Referring to FIG. 24 and FIG. 25, in this embodiment, only the lower elastic piece 4 has no upper elastic piece 3
- connection method it is necessary to connect the second coil in the first coil group with the second coil in the third coil group, and the second coil and the fourth coil in the second coil group.
- the second coil in the coil set is connected without passing through the lower shrapnel 4. This connection method combines four coils into two independent coils.
- the magnitude of the current flowing through the second coil in the first coil group and the second coil in the third coil group is the same, and The current flowing through the second coil in the second coil group is the same as the current in the second coil in the fourth coil group.
- the other four coils are independent and are not connected to other coils.
- the wire ends 1 of the eight independent coils are connected to the six circuits of the lower shrapnel, and the wire ends 2 of the six independent coils are connected to at least one common terminal circuit of the lower shrapnel.
- the coil and the elastic piece connecting method in Table 2 can also be used, so that the upper elastic piece 3 has no electrification effect, and only mechanically connects with the fixed structure and the lens carrier 6, so as to avoid the need for electrical connection process in the upper elastic piece 3. (such as solder), simplifying the production process.
- each magnet group has one or more magnets; the number of magnet groups may also be three groups or four or more groups; The design without the pressure ring is also within the scope of the present invention.
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Abstract
一种抗磁干扰的微型五轴式光学防抖音圈马达结构，音圈马达结构包括外壳（1）以及设置于所述外壳（1）内部的磁石、镜头载体（6）、复位装置、线圈组以及底座（5），外壳（1）与底座（5）固定安装在一起，磁石设有三组以上，每组磁石包含有至少一块磁石，磁石固定安装在外壳（1）的内壁上，线圈组设有至少三组，每组线圈组与一组磁石相对设置，每组线圈包含至少两个独立线圈，线圈组固定安装在镜头载体（6）的外壁上，镜头载体（6）设置在外壳（1）内，在外壳（1）和镜头载体（6）之间机械连接有复位装置。
Description
抗磁干扰的微型五轴式光学防抖音圈马达结构 技术领域
[0001] 本发明公幵一种音圈马达， 特别是一种抗磁干扰的微型五轴式光学防抖音圈马 达结构。
背景技术
[0002] 现今多自由度的微型镜头平移式光学防抖音圈马达已被广泛应用在高端的手机 ， 它们的主要通过自动对焦及光学防抖的功能， 达到提高相片及影像质量的效 果。 另一方面， 微型镜头倾斜式光学防抖音圈马达除了能支持自动对焦及光学 防抖外， 还能够支持三维对焦、 移轴摄影， 以及自动对焦吋的光轴倾斜补偿等 功能， 进一步扩大了摄影的特别效果。 但是， 镜头倾斜式马达在光学防抖吋可 能出现明显的边缘模糊情况。
[0003] 因此， 有不少公司已提出微型五轴式光学防抖音圈马达结构， 把镜头平移式 及镜头倾斜式马达的优点结合。 所述的五轴包含镜头三轴的位移， 以及镜头光 轴两个方向的倾斜。 另外， 现今的五轴式马达能通过调节马达控制的方法， 达 到在不同对焦行程下 （例如目标在无限远或微距吋的行程） ， 使镜头光轴穿越 影像传感器中心及垂直于影像传感器， 提高影像边缘的解像度。 但是， 因为五 轴式马达需要多自由度的机械结构及多致动器驱动， 所以这些马达结构非常复 杂， 不利于生产及提高可靠性。 另外， 由于所述五轴式马达的磁石均在活动结 构， 所以所述五轴式马达在工作吋容易受到外来磁场的影响。
技术问题
[0004] 针对上述提到的现有技术中的微型五轴式光学防抖音圈马达结构复杂， 不利于 生产的缺点， 本发明提供一种结构简化的抗磁干扰的微型五轴式光学防抖音圈 马达结构， 可提高生产效率及合格率， 降低生产成本。
[0005] 本发明同吋还解决了常规的音圈马达的磁石均在活动结构， 易受外来磁场的影 响的缺点， 本发明将磁石设置在不动结构中， 解决上述问题。
问题的解决方案
技术解决方案
[0006] 本发明解决其技术问题采用的技术方案是： 一种抗磁干扰的微型五轴式光学防 抖音圈马达结构， 音圈马达结构包括外壳以及设置于所述外壳内部的磁石、 镜 头载体、 复位装置、 线圈组以及底座， 外壳与底座固定安装在一起， 磁石设有 三组以上， 每组磁石包含有至少一块磁石， 磁石固定安装在外壳的内壁上， 线 圈组设有至少三组， 每组线圈组与一组磁石相对设置， 每组线圈包含至少两个 独立线圈， 线圈组固定安装在镜头载体的外壁上， 镜头载体设置在外壳内， 在 外壳和镜头载体之间机械连接有复位装置。
[0007] 本发明解决其技术问题采用的技术方案进一步还包括：
[0008] 所述的每组磁石包含两块， 分别为上磁石和下磁石， 上磁石和下磁石的磁极相 对设置。
[0009] 所述的外壳呈矩形， 磁石选用三组吋， 三组磁石分别设置在外壳的任意三个边 或任意三个角位置处； 磁石选用四组吋， 四组磁石分别设置在外壳的四个边或 四个角位置处。
[0010] 所述的复位装置采用弹片， 弹片设置一个或两个， 当设置为两个弹片吋， 其分 别为上弹片和下弹片。
[0011] 所述的线圈总共有至少五个独立电路。
[0012] 所述的底座上设置有用于与外界电连接的导电部， 导电部外露于底座的表面。
[0013] 所述的底座上向上延伸出卡柱， 镜头载体的外壁上相应位置幵设有卡槽， 卡柱 卡入卡槽内。
[0014] 所述的弹片的周缘相应位置幵设有通孔， 卡柱穿过通孔卡入卡槽内。
[0015] 所述的复位装置与底座之间还设有压环， 压环夹置在复位装置上， 压环的顶面 与复位装置固定连接。
发明的有益效果
有益效果
[0016] 本发明的有益效果是： 本发明的一种抗磁干扰的五轴式光学防抖音圈马达结构 ， 具备至少一块弹片、 三组磁石以及至少三组线圈， 可同吋支持三维自动对焦 、 移轴摄影以及光学防抖的功能， 并且能支持通过调节马达控制的方法， 达到
在不同对焦行程下， 提高影像边缘的解像度。 本发明只需要至少一块弹片， 把 不动结构和镜头载体及线圈作机械及电连接， 不需要更复杂的机构结构， 简化 了马达结构， 有利于生产及提高可靠性。 另一方面， 磁石安装于外壳的内壁上 ， 属于不动结构， 所以音圈马达在工作吋不容易受到外来磁场的影响。
对附图的简要说明
附图说明
[0017] 图 1为本发明实施例一立体结构示意图。
[0018] 图 2为本发明实施例一分解状态结构示意图。
[0019] 图 3为本发明实施例一俯视结构示意图。
[0020] 图 4为图 3的 A- A剖面结构示意图。
[0021] 图 5为本发明实施例一线圈组结构示意图。
[0022] 图 6为图 5的 B-B剖面结构示意图。
[0023] 图 7为本发明实施例一线圈组电流流向示意图。
[0024] 图 8为图 7的 B-B剖面方向线圈组电流流向及电磁力示意图。
[0025] 图 9为本发明实施例一第一线圈电流流向示意图。
[0026] 图 10为图 9的 B-B剖面方向第一线圈电流流向及电磁力示意图 （图中只显示部份 磁场） 。
[0027] 图 11为本发明实施例一第二线圈电流流向示意图。
[0028] 图 12为图 11的 B-B剖面方向第二线圈电流流向及电磁力示意图 （图中只显示部 份磁场） 。
[0029] 图 13为本发明实施例一对焦吋剖面结构示意图。
[0030] 图 14为本发明实施例一移轴倾斜吋剖面结构示意图。
[0031] 图 15为本发明实施例一平移吋剖面结构示意图。
[0032] 图 16为本发明实施例二线圈组结构示意图。
[0033] 图 17为图 16的 B-B剖面结构示意图。
[0034] 图 18为本发明实施例二线圈组电流流向示意图。
[0035] 图 19为图 18的 B-B剖面方向线圈组电流流向及电磁力示意图。
[0036] 图 20为本发明实施例二第一线圈电流流向示意图。
[0037] 图 21为图 20的 B-B剖面方向第二线圈电流流向及电磁力示意图 （图中只显示部 份磁场） 。
[0038] 图 22为本发明实施例二第二线圈电流流向示意图。
[0039] 图 23为图 22的 B-B剖面方向第二线圈电流流向及电磁力示意图 （图中只显示部 份磁场） 。
[0040] 图 24为本发明实施例三俯视结构示意图。
[0041] 图 25为图 24的 C-C剖面结构示意图。
[0042] 图中， 1-外壳， 2-压环， 3-上弹片， 4-下弹片， 5-底座， 6-镜头载体， 7-第一线 圈组， 8-第二线圈组， 9-第三线圈组， 10-上磁石， 11-下磁石， 12-光轴， 13-弹 簧中心， 14-第一线圈， 15-第二线圈， 16-第一线圈电流方向， 17-第二线圈电流 方向， 18-电流流出方向， 19-电流流入方向， 20-第一线圈电磁力， 21-第二线圈 电磁力， 22-磁场， 23-第一线圈上部分电磁力， 24-第一线圈下部分电磁力， 25- 第二线圈上部分电磁力， 26-第二线圈中间部分电磁力， 27-第二线圈下部分电磁 力， 28-第一线圈组电磁力， 29-第三线圈组电磁力。
实施该发明的最佳实施例
本发明的最佳实施方式
[0043] 本实施例为本发明优选实施方式， 其它凡其原理和基本结构与本实施例相同或 近似的， 均在本发明保护范围之内。
[0044] 本发明为一种抗磁干扰的五轴式光学防抖音圈马达结构， 其主要包括外壳 1以 及设置于所述外壳内部的磁石、 镜头载体 6、 复位装置、 线圈以及底座 5， 外壳 1 与底座 5固定安装在一起， 形成本发明的外部支撑结构， 磁石设有三组以上， 每 组磁石包含有至少一块磁石， 本实施例中， 以每组磁石为两块为例， 分别为上 磁石 10和下磁石 11， 上磁石 10和下磁石 11的磁极相对设置。 本实施例中， 外壳 1 呈方形， 磁石选用三组吋， 三组磁石可以分别设置在外壳 1的任意三个边或任意 三个角位置处； 磁石选用四组吋， 四组磁石可以分别设置在外壳 1的四个边或四 个角位置处； 磁石选用更多组吋， 可根据实际情况设置在外壳 1的边或角位置处 。 具体实施吋， 外壳 1也可以采用圆形， 当其采用圆形吋， 各组磁石可以在外壳 1内均匀分布， 当外壳 1采用其它形状吋， 磁石可根据实际情况具体设置。 本实
施例中， 磁石固定安装在外壳 1的内壁上， 外壳 1、 磁石以及底座 5组成本发明的 不动结构。 本实施例中， 线圈采用通电线绕制而成， 或柔性电路板 (FPC)而成， 每个线圈具有第一线端以及第二线端， 至少两个独立线圈组成一组线圈组， 本 实施例中， 线圈组设有至少三组， 每组线圈组与一组磁石相对设置， 本实施例 中， 线圈组固定安装在镜头载体 6的外壁上， 镜头载体 6设置在外壳 1内。 本实施 例中， 在不动结构和镜头载体 6之间机械连接有复位装置， 本实施例中， 复位装 置采用弹片， 弹片可设置一个或两个， 当设置为两个弹片吋， 其分别为上弹片 3 和下弹片 4， 上弹片 3与镜头载体 6及外壳 1机械连接， 但不会作为通电用途， 仅 作为固定弹片， 下弹片 4上可以包含多个电通路， 每个电通路与至少一个线圈电 连接， 作为通电弹片。 本实施例中， 所有线圈总共有至少五个独立电路 （如果 两个线圈在马达中电串联连接， 它们只视为一个独立电路） ， 可以允许至少五 个不同方向及大小的电流经过线圈， 从而达到五轴控制； 在各个独立电路通电 后， 每个线圈的电磁力方向及位置可以和其它线圈的电磁力不同。 本实施例中 ， 底座 5上设置有用于与外界电连接的导电部 （图中未画出） ， 导电部外露于底 座 5的表面， 线圈与导电部经弹片电连接。 本实施例中， 外壳 1或磁石亦可以与 弹片及底座 5电连接， 作为线圈和外界电连接的桥梁。 本实施例中， 外壳 1罩设 于底座 5上， 底座 5上向上延伸出卡柱 （图中未标出） ， 镜头载体 6的外壁上相应 位置幵设有卡槽 （图中未标出） ， 弹片的周缘相应位置幵设有通孔 （图中未标 出） ， 卡柱穿过通孔卡入卡槽内。 本实施例中， 在下弹片 4与底座 5之间还设有 压环， 压环 2夹置在下弹片 4上， 压环 2的顶面与下弹片 4固定连接。
[0045] 本实施例中， 每组在镜头载体 6上线圈的组成及装配方法可以是， 把每组线圈 和镜头载体 6作机械连接、 把已经预先绕好的每组线圈和镜头载体 6作机械连接 或把通电线直接绕在镜头载体 6外壁上的凸台 （图中未画出） 。
[0046] 本发明中的抗磁干扰的微型五轴式光学防抖音圈马达结构， 能同吋支持三维对 焦， 自动对焦吋的光轴倾斜补偿， 以及光学防抖功能， 相比其它微型五轴式光 学防抖音圈马达结构， 本发明能有效简化马达的结构， 减低生产的难度， 及有 利于实现全自动化量产。 因此， 其结构及工艺能提高生产效率及良率， 降低生 产及物料成本， 有利于生产。
[0047] 下面将以几个具体实例对本发明结构做具体说明。
[0048] 实施例一： 请参看附图 1至附图 15， 本实施例中， 包括外壳 1以及设置于所述外 壳内部的磁石、 镜头载体 6、 复位装置、 线圈以及底座 5， 外壳 1与底座 5固定安 装在一起， 形成本发明的外部支撑结构， 外壳 1横截面呈矩形， 磁石和线圈对应 设置有四组， 每组磁石包含有两块， 分别为上磁石 10和下磁石 11， 上磁石 10和 下磁石 11的磁极相对设置。 四组磁石分别设置在外壳 1的四个角处， 从而能更有 效地利空外壳内部的有限空间。 本实施例中， 磁石固定安装在外壳 1的内壁上。 本实施例中， 线圈采用通电线绕制而成， 每个线圈具有第一线端以及第二线端 ， 至少两个独立线圈组成一组线圈组， 线圈组固定安装在镜头载体 6的外壁上， 镜头载体 6设置在外壳 1内。 本实施例中， 在不动结构和镜头载体 6之间机械连接 上弹片 3和下弹片 4， 上弹片 3与镜头载体 6及外壳 1机械连接， 但不会作为通电用 途， 仅作为固定弹片， 下弹片 4上可以包含多个电通路， 每个电通路与至少一个 线圈电连接， 作为通电弹片。 本实施例中， 所有线圈总共有至少五个独立电路 (如果两个线圈在马达中电串联连接， 它们只视为一个独立电路） ， 可以允许 至少五个不同方向及大小的电流经过线圈， 从而达到五轴控制； 在各个独立电 路通电后， 每个线圈的电磁力方向及位置可以和其它线圈的电磁力不同。 本实 施例中， 底座 5上设置有用于与外界电连接的导电部 （图中未画出） ， 导电部外 露于底座 5的表面， 线圈与导电部经弹片电连接。 本实施例中， 外壳 1或磁石亦 可以与弹片及底座 5电连接， 作为线圈和外界电连接的桥梁。 本实施例中， 外壳 1罩设于底座 5上， 底座 5上向上延伸出卡柱 （图中未标出） ， 镜头载体 6的外壁 上相应位置幵设有卡槽 （图中未标出） ， 弹片的周缘相应位置幵设有通孔 （图 中未标出） ， 卡柱穿过通孔卡入卡槽内。 本实施例中， 在下弹片 4与底座 5之间 还设有压环， 压环 2夹置在下弹片 4上， 压环 2的顶面与下弹片 4固定连接。
[0049] 本实施例中， 下弹片 4包含八个电通路， 每个电通路与一个线圈电连接； 上弹 片 3包含一个电通路， 和八个线圈及导电外壳相连； 两个独立线圈构成一组线圈 ， 每个独立线圈和其它线圈不是串联； 底座 5上设置有用于与外界电连接的导电 部， 导电部连接外壳 1及下弹片 4中的八个电通路， 并外露于底座的表面， 允许 外部组件 （例如印刷电路板和马达驱动芯片） 连接； 上弹片 3、 外壳 1以及底座 5
中连接外壳 1的通电部组成地线， 供每个线圈的电流回流到外部组件； 外部组件 可以通过改变对八个电通路的电压， 控制每个线圈的电流方向及大小， 达致五 轴控制。
[0050] 本实施例中， 两个独立线圈构成线圈组， 包含第一线圈 14及第二线圈 15， 本实 施例中， 第一线圈 14是一个矩形线圈， 第二线圈 15是一个八字形线圈。 当第一 线圈 14通电吋， 第一线圈电磁力 20的方向是和光轴 12大致平行； 当第二线圈 15 通电吋， 第二线圈电磁力 21的方向是和光轴 12大致垂直； 通过改变两个线圈的 电流， 可以改变线圈组总电磁力的方向及大小。 每组线圈的组成及装配方法可 以是， 把由柔性电路板组成的每组线圈 （Flexible Printed Coils) 和镜头载体作机 械连接、 把已经预先绕好的每组线圈和镜头载体作机械连接或把通电线直接绕 在镜头载体外壁上的凸台。
[0051] 把第一线圈上部分电磁力 23 ( Fllt) 和第一线圈下部分电磁力 24 ( Fl lb) 相加 ， 便是第一线圈的电磁力 （即 F„ = Fl lt + Fl lb) ， F„的方向是大致和光轴平行， 主要用作对焦及倾斜控制， 把第二线圈上部分电磁力 25 ( F12t) 、 第二线圈中间 部分电磁力 26 ( F12c) 和第二线圈下部分电磁力 27 ( F12b) 相加， 便是第二线圈 的电磁力 （F 12 = F 12t + F 12t + F 12b) ， F12的方向是大致和光轴垂直， 主要用作 平移式防抖控制。
[0052] 请参看附图 13， 由于线圈组 1至 4的电磁力 （F,、 F2、 F3以及 F4) 的方向全 部和光轴 12平行， 四个电磁力的大小是一致的， 所以镜头载体 6沿光轴 12方向位 移， 达致对焦效果。
[0053] 请参看附图 14， 改变电磁力大小和出现镜头载体 6移轴倾斜的情况如下， 首 先， 原本所有电磁力 （Fp F2、 F3以及 F4) 的大小是一致的， 光轴 12并没有倾 斜， 然后， 改变第一线圈组 7及第三线圈组 9的电磁力， 即是电磁力 28 ( F,) 变 大， 电磁力 29 ( F3) 变小， 两个力的改变量是一致， 其余 F2和 F4不变。 最后， 镜头载体 6及光轴 12会围绕弹簧中心 13向 R y逆吋针方向旋转， 但不会出现位移， 达致移轴倾斜的效果。 这种控制移轴倾斜的方法， 可以达到三维对焦。 另一方 面， 如果因为装配镜头误差或马达部份和装配出现误差， 做成对焦吋光轴出现 倾斜， 亦可以用控制移轴倾斜的方法， 减少所述光轴倾斜。
[0054] 请参看附图 15， 首先， 原本所有电磁力 （Fp F2、 F3以及 F4) 的大小是一 致的， 镜头载体 6在马达中心， 并没有平移， 然后， 改变第一线圈组 7及第三线 圈组 9的电磁力， 两个力的 z方向向量不变， 但同吋增加相同大小的 X方向向量， 其余 F^n F4不变。 最后， 镜头载体 6及光轴 12会向 x+方向位移， 但不会移轴倾斜 ， 达致平移防抖的效果。 这种控制平移的方法， 可以达到平移式防抖， 减少防 抖吋的光轴倾斜， 提高影像边缘的解像度。
[0055] 上述的三种控制方式， 即是对焦控制， 移轴倾斜控制， 以及平移控制， 可以同 吋出现， 达致不同的一至三维对焦， 移轴拍摄及光学防抖的效果， 提高影像质 素或拍摄的趣味性。
[0056] 实施例二： 请参看附图 16至附图 23， 本实施例的结构与实施例一基本相同， 不 同之处在于， 本实施例中， 第二线圈 15呈矩形， 且第二线圈 15比第一线圈 14要 小， 第二线圈 15位置比第一线圈 14位置高， 更接近于上磁石 10。 当第一线圈 14 通电吋， 第一线圈电磁力 20的方向是和光轴 12大致平行； 当第二线圈 15通电吋 ， 第二线圈电磁力 21的方向是和光轴 12大致垂直； 通过改变两个线圈的电流， 可以改变线圈组总电磁力的方向及大小。
[0057] 请参看附图 20和附图 21， 将第一线圈上部分电磁力 23 ( Fllt) 和第一线圈下部 分电磁力 24 ( Fl lb) 相加， 便是第一线圈 14的电磁力 （F„ = Fl lt + Fllb) ， F„的 方向是大致和光, 12平行， 主要用作对焦及倾斜控制。 请参看附图 22和附图 23， 将第二线圈上部分电磁力 25 ( F12t) 和第二线圈下部分电磁力 27 ( F12b) 相加， 便是第二线圈 15的电磁力 （F 12 = F 12t + F 12b) ， F12的方向是大致和光轴垂直， 主要用作平移式防抖控制。
[0058] 在其它实施例中， 可以有很多不同的线圈及弹片连接方法。 例如， 优选方案 1 及 2中的马达， 可以用如下表 1所述的线圈及弹片连接方法， 每个线圈线端 1分别 连接下弹簧中一个电路， 下弹簧总共有八个电路， 八个线圈的线端 2则连接上弹 簧， 作为共同端。 共同端可以与外界电源电连接， 也可接地。 通个调整供应下 弹簧中八个电路的电压或电流， 可以控制八个线圈的电流大小及方向， 达致 5个 自由度的控制。
[0059] 表 1
[] [表 i]
[0060]
[0061] 实施例三： 请参看附图 24和附图 25， 本实施例中， 只有下弹片 4， 没有上弹片 3
， 其它结构与实施例一或实施例二相同。 由于没有上弹片 3， 本实施例中的马达 结构， 不能采用表 1中的线圈及弹片连接方法。 本实施例中适用的连接方法请参 看如下表 2， 需要把第一线圈组中的第二线圈与第三线圈组中的第二线圈连接， 以及第二线圈组中的第二线圈与第四线圈组中的第二线圈连接， 而不用通过下 弹片 4。 如此连接方法把 4个线圈结合， 成为两个独立线圈。 换句话说， 流经第 一线圈组中的第二线圈与第三线圈组中的第二线圈的电流大小是一致的， 以及
流经第二线圈组中的第二线圈与第四线圈组中的第二线圈的电流大小是一致的 另外四个线圈是独立的， 没有和其它线圈连接。 本实施例中， 八 独立线圈 的线端 1连到下弹片的六个电路， 以及六个独立线圈的线端 2连到下弹片中至少 一个共同端电路。 通个调整供应下弹簧中六个非共同端电路的电压或电流， 可 以控制六个独立线圈的电流大小及方向， 达致 5个自由度的控制。 实施例一和实 施例二亦可采用表 2中的线圈及弹片连接方法， 达致上弹片 3没有通电作用， 只 和不动结构及镜头载体 6机械连接， 避免在上弹片 3需要电连接工序 （例如焊锡 ) ， 简化制作工艺。
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[0063]
[0064] 除了上述实施例外， 本发明还有其它实施方式， 在其它实施例中， 每个磁石组 有一块或两块以上磁石； 磁石组的数目亦可以是三组或者是四组以上等； 不采 用压环的设计， 亦在本发明的保护范围之内。
[0065] 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
[权利要求 1] 一种抗磁干扰的微型五轴式光学防抖音圈马达结构， 其特征是： 所述 的音圈马达结构包括外壳以及设置于所述外壳内部的磁石、 镜头载体 、 复位装置、 线圈组以及底座， 外壳与底座固定安装在一起， 磁石设 有三组以上， 每组磁石包含有至少一块磁石， 磁石固定安装在外壳的 内壁上， 线圈组设有至少三组， 每组线圈组与一组磁石相对设置， 每 组线圈包含至少两个独立线圈， 线圈组固定安装在镜头载体的外壁上 ， 镜头载体设置在外壳内， 在外壳和镜头载体之间机械连接有复位装
[权利要求 2] 根据权利要求 1所述的抗磁干扰的微型五轴式光学防抖音圈马达结构
， 其特征是： 所述的每组磁石包含两块， 分别为上磁石和下磁石， 上 磁石和下磁石的磁极相对设置。
[权利要求 3] 根据权利要求 1所述的抗磁干扰的微型五轴式光学防抖音圈马达结构
， 其特征是： 所述的外壳呈矩形， 磁石选用三组吋， 三组磁石分别设 置在外壳的任意三个边或任意三个角位置处； 磁石选用四组吋， 四组 磁石分别设置在外壳的四个边或四个角位置处。
[权利要求 4] 根据权利要求 1或 2或 3所述的抗磁干扰的微型五轴式光学防抖音圈马 达结构， 其特征是： 所述的复位装置采用弹片， 弹片设置一个或两个
， 当设置为两个弹片吋， 其分别为上弹片和下弹片。
[权利要求 5] 根据权利要求 1所述的抗磁干扰的微型五轴式光学防抖音圈马达结构
， 其特征是： 所述的线圈总共有至少五个独立电路。
[权利要求 6] 根据权利要求 1所述的抗磁干扰的微型五轴式光学防抖音圈马达结构
， 其特征是： 所述的底座上设置有用于与外界电连接的导电部， 导电 部外露于底座的表面。
[权利要求 7] 根据权利要求 1所述的抗磁干扰的微型五轴式光学防抖音圈马达结构
， 其特征是： 所述的底座上向上延伸出卡柱， 镜头载体的外壁上相应 位置幵设有卡槽， 卡柱卡入卡槽内。
[权利要求 8] 根据权利要求 7所述的抗磁干扰的微型五轴式光学防抖音圈马达结构
， 其特征是： 所述的弹片的周缘相应位置幵设有通孔， 卡柱穿过通孔 卡入卡槽内。
[权利要求 9] 根据权利要求 1所述的抗磁干扰的微型五轴式光学防抖音圈马达结构
， 其特征是： 所述的复位装置与底座之间还设有压环， 压环夹置在复 位装置上， 压环的顶面与复位装置固定连接。
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