WO2022099848A1 - 镜头驱动装置 - Google Patents

镜头驱动装置 Download PDF

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Publication number
WO2022099848A1
WO2022099848A1 PCT/CN2020/136237 CN2020136237W WO2022099848A1 WO 2022099848 A1 WO2022099848 A1 WO 2022099848A1 CN 2020136237 W CN2020136237 W CN 2020136237W WO 2022099848 A1 WO2022099848 A1 WO 2022099848A1
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WO
WIPO (PCT)
Prior art keywords
support frame
shake
driving device
lens driving
bracket
Prior art date
Application number
PCT/CN2020/136237
Other languages
English (en)
French (fr)
Inventor
倪天恒
谢荣富
闫锋
李刚
韦锁和
Original Assignee
诚瑞光学(深圳)有限公司
常州市瑞泰光电有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 诚瑞光学(深圳)有限公司, 常州市瑞泰光电有限公司 filed Critical 诚瑞光学(深圳)有限公司
Publication of WO2022099848A1 publication Critical patent/WO2022099848A1/zh

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/02—Bodies
    • G03B17/12—Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/68—Control of cameras or camera modules for stable pick-up of the scene, e.g. compensating for camera body vibrations
    • H04N23/682—Vibration or motion blur correction
    • H04N23/685—Vibration or motion blur correction performed by mechanical compensation
    • H04N23/687—Vibration or motion blur correction performed by mechanical compensation by shifting the lens or sensor position
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B29/00—Combinations of cameras, projectors or photographic printing apparatus with non-photographic non-optical apparatus, e.g. clocks or weapons; Cameras having the shape of other objects
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B5/00—Adjustment of optical system relative to image or object surface other than for focusing
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B5/00—Adjustment of optical system relative to image or object surface other than for focusing
    • G03B5/04—Vertical adjustment of lens; Rising fronts
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50—Constructional details
    • H04N23/51—Housings
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50—Constructional details
    • H04N23/54—Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50—Constructional details
    • H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B2205/00—Adjustment of optical system relative to image or object surface other than for focusing
    • G03B2205/0007—Movement of one or more optical elements for control of motion blur
    • G03B2205/0015—Movement of one or more optical elements for control of motion blur by displacing one or more optical elements normal to the optical axis
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B2205/00—Adjustment of optical system relative to image or object surface other than for focusing
    • G03B2205/0053—Driving means for the movement of one or more optical element
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B2205/00—Adjustment of optical system relative to image or object surface other than for focusing
    • G03B2205/0053—Driving means for the movement of one or more optical element
    • G03B2205/0069—Driving means for the movement of one or more optical element using electromagnetic actuators, e.g. voice coils

Definitions

  • the utility model relates to a driving device, in particular to a lens driving device.
  • lens driving devices are widely used in various imaging devices.
  • the anti-shake coil and the anti-shake magnetic steel of the lens of the related art are relatively arranged along the optical axis of the lens.
  • the anti-shake coil When the anti-shake coil is applied with current, the anti-shake coil and the anti-shake magnetic steel generate an electromagnetic field, and the anti-shake coil is subjected to the Lorentz force of the electromagnetic field. It drives the anti-shake magnetic steel to move in the direction perpendicular to the optical axis, thereby driving the lens barrel to achieve OIS anti-shake performance, and the elastic structure such as the suspension wire supporting the lens barrel is used to provide the anti-shake recovery force.
  • this anti-shake structure usually expands the size of the lens along the optical axis.
  • the OIS function adopts the form of metal spherical contact, but the metal spherical surface has a complicated manufacturing process and a high cost.
  • the technical problem to be solved by the present invention is to provide a lens driving device with simple structure and low production cost.
  • the utility model provides a lens driving device, the lens driving device includes:
  • the first support frame is surrounded by a first side wall to form a rectangular structure with an accommodation space;
  • the second support frame is surrounded by the second side wall to form a rectangular structure, the second support frame is sleeved on the first support frame and is spaced from the first support frame;
  • a lens barrel which is accommodated in the accommodating space and connected with the first support frame for installing the lens
  • the bracket assembly forms a rotational connection with the first support frame, so that the first support frame can rotate relative to the bracket assembly around a first direction;
  • the bracket assembly forms a rotational connection with the second support frame, and suspends the first support frame in the second support frame, so that the bracket assembly can drive the first support frame to rotate relative to the second support frame together around the second direction;
  • the first direction and the second direction are perpendicular to the optical axis, and are respectively parallel to the second support frame. - the direction of the two diagonals of the supporting frame;
  • the anti-shake magnetic steel includes at least two and is respectively fixed on two adjacent first side walls;
  • An anti-shake coil includes at least two and is respectively fixed on two adjacent second side walls, each anti-shake coil is respectively opposite to an anti-shake magnetic steel and arranged at intervals, and jointly drives the first support frame to wrap around the first direction or second direction deflection;
  • the flexible circuit board is fixed on the outer peripheral side of the second support frame and is electrically connected with the anti-shake coil;
  • the metal sheet comprises at least two anti-shake magnetic steels, which are respectively opposite to and spaced apart from the two anti-shake magnetic steels, and the metal sheets and the anti-shake magnetic steels form mutual magnetic attraction.
  • the bracket assembly includes a bracket, a first guide column and a second guide column;
  • the bracket includes a bracket body in a rectangular ring shape, a first support wall that is bent and extended from a group of diagonal positions of the bracket body, and a bracket formed by the bracket Another group of second support walls that are bent and extended at the other diagonal positions of the body;
  • the first support wall and the second support wall are both arranged at intervals from the first support frame;
  • the first guide posts include two and extend along the first direction and
  • the second guide posts include two and extend along the second direction and are arranged at intervals;
  • the bracket body is located at the top end of the lens barrel and is spaced from the lens barrel;
  • the first support wall is rotatably connected to the first support frame through the first guide posts,
  • the second support wall is disposed between the first support frame and the second support frame and is rotatably connected to the second support frame through the second guide post.
  • the bracket is made of steel sheet.
  • the center line of the anti-shake magnetic steel, the center axis of the first guide column and the center axis of the second guide column are flush in the optical axis direction.
  • the first support frame further includes first receiving holes penetrating the two first side walls in a direction perpendicular to the optical axis, respectively, and the anti-shake magnetic steels are respectively received in the corresponding first receiving holes.
  • the second support frame further includes second receiving holes penetrating the two second side walls in a direction perpendicular to the optical axis, respectively, and the anti-shake coils are respectively received in the corresponding second receiving holes.
  • the lens driving device further includes a casing covered on the second support frame, and the metal sheet is fixed on the inner side of the casing.
  • the anti-shake magnetic steel is respectively fixed on the two adjacent first side walls of the first support frame, and the anti-shake coils are respectively fixed on the two adjacent second side walls.
  • each anti-shake coil is opposite and spaced apart from an anti-shake magnetic steel, and jointly drives the first support frame to deflect around the first direction or the second direction perpendicular to the optical axis direction;
  • the two anti-shake magnets are arranged opposite and spaced apart, so that the metal sheet is located at the side of the lens drive device, and forms a mutual magnetic attraction with the anti-shake magnet to provide anti-shake restoring force, so as to realize the vertical direction of the optical axis.
  • Anti-shake (OIS) function is arranged opposite and spaced apart, so that the metal sheet is located at the side of the lens drive device, and forms a mutual magnetic attraction with the anti-shake magnet to provide anti-shake restoring force, so as to realize the vertical direction of the optical axis.
  • the structure that the above-mentioned metal sheet and anti-shake magnetic steel work together to achieve anti-shake recovery force is located at the side of the lens drive device, and does not occupy the thickness of the lens drive device along the optical axis direction, which is conducive to thinning requirements and realizes anti-shake recovery.
  • the structure design of the force is simple, and compared with the metal spherical contact structure that realizes the anti-shake function in the prior art, the assembly method is effectively simplified and the production cost is reduced.
  • FIG. 1 is a three-dimensional schematic diagram of a lens driving device of the present invention
  • FIG. 2 is a schematic diagram of a partially exploded structure of the lens driving device of the present invention.
  • FIG. 3 is a schematic exploded view of another part of the structure of the lens driving device of the present invention.
  • Fig. 4 is a sectional view along line A-A in Fig. 1;
  • Fig. 5 is a sectional view along line B-B in Fig. 1;
  • FIG. 6 is a cross-sectional view along line C-C in FIG. 1;
  • FIG. 7 is a graph showing the restoring force provided by the metal sheet when the rotation center of the lens barrel is located at the center of the anti-shake magnetic steel in the lens driving device of the present invention.
  • the present invention provides a lens driving device 100, including a first support frame 1, a second support frame 2, a lens barrel 3, a bracket assembly 4, an anti-shake magnetic steel 5, an anti-shake magnet Coil 6 , flexible circuit board 7 , metal sheet 8 and Hall sensor 9 .
  • the first support frame 1 is surrounded by the first side wall 11 to form a rectangular structure with a receiving space.
  • the second support frame 2 is surrounded by the second side wall 21 to form a rectangular structure.
  • the second support frame 2 is sleeved on the first support frame 1 and is spaced from the first support frame 1 .
  • the lens barrel 3 is accommodated in the accommodating space of the first support frame 1 and connected to the first support frame 1 for mounting the lens 10 .
  • the bracket assembly 4 forms a rotational connection with the first support frame 1, so that the first support frame 1 can rotate relative to the bracket assembly 4 around the first direction; the bracket assembly 4 forms a rotational connection with the second support frame 2, and connects the first support
  • the frame 1 is suspended in the second support frame 2 , so that the bracket assembly 4 can drive the first support frame 1 to rotate together relative to the second support frame 2 around the second direction.
  • the first direction and the second direction are perpendicular to the optical axis, and are respectively directions parallel to two diagonal lines of the first support frame 1 .
  • the first direction is defined as the X direction
  • the second direction is defined as the Y direction
  • the optical axis direction is defined as the Z direction
  • the first direction and the second direction are respectively parallel to the two diagonals of the first support frame 1 . direction.
  • the first direction and the second direction are perpendicular to each other.
  • the anti-shake magnetic steel 5 includes at least two and is respectively fixed to two adjacent first side walls 11 . More preferably, the first support frame 1 further includes first receiving holes 12 penetrating the two first side walls 11 in the direction perpendicular to the optical axis, respectively, and the anti-shake magnetic steel 5 is respectively received in the corresponding first receiving holes 12, so that the The radial space occupation of the lens driving device 100 is reduced, and the radial (direction perpendicular to the optical axis) dimension thereof is reduced.
  • the anti-shake coils 6 include at least two and are respectively fixed to two adjacent second side walls 21 .
  • Each anti-shake coil 6 is respectively opposite to and spaced apart from an anti-shake magnetic steel 5, and jointly drives the first support frame 1 to deflect around the first direction or the second direction, so as to drive the lens barrel 3 along the second direction through the first support frame 1. Deflection in one direction or the second direction.
  • the second support frame 2 further includes second receiving holes 22 penetrating the two second side walls 21 in the direction perpendicular to the optical axis, respectively, and the anti-shake coils 6 are respectively received in the corresponding second receiving holes 22 to reduce the problem.
  • the radial space occupied by the lens driving device 100 is small, and its radial (direction perpendicular to the optical axis) dimension is reduced.
  • the two anti-shake coils 6 When the currents of the two anti-shake coils 6 are energized in the same direction, the two anti-shake coils 6 generate thrust on the anti-shake magnetic steel 5, and then push the anti-shake magnetic steel 5 to drive the lens barrel 3 around one of the directions perpendicular to the optical axis.
  • the shaft rotates; when the two anti-shake coils 6 are energized, the current is reversed, then the two anti-shake coils 6 generate torsional force on the anti-shake magnetic steel 5, then push the anti-shake magnetic steel 5 to drive the lens barrel 3 around the direction perpendicular to the optical axis of the other axis of rotation.
  • the bracket assembly 4 includes a bracket 41 , a first guide post 42 and a second guide post 43 .
  • the bracket 41 includes a bracket body 411 in the shape of a rectangular ring, a first support wall 412 bent and extended from one set of diagonal positions of the bracket body 411 respectively, and a first support wall 412 bent and extended from another set of diagonal positions of the bracket body 411 respectively.
  • the second support wall 413 ; the first support wall 412 and the second support wall 413 are spaced apart from the first support frame 1 .
  • the bracket 41 is made of steel sheet, which has a good supporting effect on the lens barrel 3 .
  • the first guide pillars 42 include two and extend along the first direction (X-axis direction) and are spaced apart, and the second guide pillars 43 include two and extend along the second direction (Y-axis direction) and spaced apart.
  • the bracket body 411 is located at the top of the lens barrel 3 and is spaced from the lens barrel 3 , and the first support wall 412 is rotatably connected to the first support frame 1 through the first guide post 42 , so that the bracket 41 can be relative to the first support frame 1 along the X-axis.
  • Axial rotation that is, the bracket 41 rotates relative to the lens barrel 3 in the axial direction of the X-axis;
  • the second support wall 413 is spaced between the first support frame 1 and the second support frame 2 and rotates through the second guide post 43 It is connected to the second support frame 2 , so that the bracket 41 can drive the first support frame 1 to rotate relative to the second support frame 2 along the Y axis.
  • the two anti-shake coils 6 when the currents of the two anti-shake coils 6 are energized in the same direction, the two anti-shake coils 6 generate thrust on the anti-shake magnetic steel 5, and the anti-shake magnetic steel 5 is pushed to drive the first support frame 1 to wind parallel to the The axis in the second direction (Y-axis direction) rotates; when the two anti-shake coils 6 are energized, the current is reversed, then the two anti-shake coils 6 generate torsional force on the anti-shake magnetic steel 5, then push the anti-shake magnetic steel 5 to drive
  • the first support frame 1 rotates around an axis parallel to the first direction (X-axis direction), and the lens barrel 3 is connected to the first support frame 1 and rotates synchronously with the first support frame 1, thereby realizing the OIS function of the lens barrel 3 compensate.
  • the flexible circuit board 7 is fixed on the outer peripheral side of the second support frame 2 and is electrically connected to the anti-shake coil 6 to provide current for the anti-shake coil 6 . More preferably, the outer peripheral side of the second side wall 21 of the second support frame 2 is recessed inward to form the installation space 20, and the anti-shake coil 6 can be arranged in the installation space 20, and the thickness of the second support frame 2 can be fully utilized. Instead, the radial dimension of the lens driving device 100 is reduced.
  • the metal sheet 8 includes at least two and is respectively opposite to the two anti-shake magnetic steels 5 and arranged at intervals. Is on.
  • the metal sheet 8 and the anti-shake magnetic steel 5 form a mutual magnetic attraction, thereby providing the anti-shake recovery force, and then the anti-shake magnetic steel 5, the anti-shake coil 6 and the metal sheet 8 work together to realize the OIS function, which realizes the structure of the OIS function.
  • the metal sheet 8 is a steel sheet.
  • the rotation center of the lens barrel 3 is further located at the center of the two anti-shake magnetic steels 5, that is, the center line of the anti-shake magnetic steel 5 (the center line is perpendicular to the direction of the optical axis) , the central axis of the first guide column 42 and the central axis of the second guide column 43 are flush in the direction of the optical axis, that is, the central axis of the anti-shake magnetic steel 5, the central axis of the first guide column 42 and the The central axes of the two guide posts 43 are located on the same plane perpendicular to the optical axis. At this time, as shown in FIG. 7 , the restoring force of the metal sheet 8 is zero at the initial position.
  • the rotation center of the lens barrel 3 is located at the center of the two anti-shake magnetic steels 5 .
  • the restoring force provided by the metal sheet 8 is relatively linear, which effectively improves the stability of the OIS function.
  • the lens driving device 100 also includes a casing 30 covered on the second support frame 2 for protecting other devices. At this time, the metal sheet 8 can be fixed on the inner side of the casing 30, so that the metal sheet 8 is facing the anti-shake magnet. Steel 5.
  • the Hall sensor 9 includes two, which are respectively installed on the side of the flexible circuit board 7 close to the anti-shake magnetic steel 5 and electrically connected with the flexible circuit board 7, and are used to detect the position of the lens barrel 3 in the first direction (X-axis direction) and Displacement in the second direction (Y-axis direction).
  • the anti-shake magnetic steel is respectively fixed on the adjacent two first side walls of the first supporting frame along the direction perpendicular to the optical axis of the lens barrel, and the anti-shake coil is It is fixed on two adjacent second side walls perpendicular to the direction of the optical axis, and each anti-shake coil is opposite to and spaced apart from an anti-shake magnetic steel, and jointly drives the anti-shake magnetic steel along the first direction perpendicular to the optical axis direction.

Abstract

一种镜头驱动装置（100），包括第一支撑框架（1），第二支撑框架（2），镜筒（3），支架组件（4），防抖磁钢（5），防抖线圈（6），柔性线路板（7），金属片（8）；支架组件（4）相对于第一支撑框架（1）形成转动连接，且将第一支撑框架（1）悬置于第二支撑框架（2）内以使得第一支撑框架（1）相对于第二支撑框架（2）形成转动连接；防抖线圈（6）驱动防抖磁钢（5）沿垂直于光轴方向的第一方向或第二方向偏转；金属片（8）与防抖磁钢（5）相对且间隔设置，并与防抖磁钢（5）形成相互磁吸作用。

Description

镜头驱动装置 技术领域
本实用新型涉及一种驱动装置，尤其涉及一种镜头驱动装置。
 背景技术
随着摄像技术的发展，镜头驱动装置在各种摄像装置中得到广泛的应用。镜头驱动装置与各种便携式电子设备比如手机、摄像机、电脑等的结合，更是得到消费者的青睐。
相关技术的镜头的防抖线圈和防抖磁钢沿镜头的光轴方向相对设置，防抖线圈施加电流时，防抖线圈与防抖磁钢产生电磁场，防抖线圈受到电磁场的洛伦兹力的作用，驱动该防抖磁钢沿垂直于光轴方向运动，从而带动镜筒实现OIS防抖性能，而支撑镜筒的悬丝等弹性结构则用于提供防抖回复力。但是这种防抖结构，通常会扩展镜头沿光轴方向的尺寸。
另外，相关技术的镜头驱动装置为了进一步提高防抖灵敏度，其OIS功能采用金属球面接触的形式，但金属球面制作工艺复杂，成本较高。
因此，有必要提供一种新的镜头驱动装置来解决上述问题。
 技术问题
本实用新型要解决的技术问题是提供一种结构简单且生产成本低的镜头驱动装置。
 技术解决方案
为解决上述技术问题，本实用新型提供了一种镜头驱动装置，镜头驱动装置包括：
第一支撑框架，第一支撑框架由第一侧壁围成具有收容空间的矩形结构；
第二支撑框架，第二支撑框架由第二侧壁围成矩形结构，第二支撑框架套设于第一支撑框架并与第一支撑框架间隔设置；
镜筒，镜筒收容于收容空间内并与第一支撑框架连接，用于安装镜头；
支架组件，支架组件与第一支撑框架形成转动连接，以使得第一支撑框架可绕第一方向相对于支架组件转动；支架组件与第二支撑框架形成转动连接，并将第一支撑框架悬置于第二支撑框架内，以使得支架组件可带动第一支撑框架共同绕第二方向相对于第二支撑框架转动；其中，第一方向和第二方向垂直于光轴，且分别为平行于第一支撑框架的两对角线的方向；
防抖磁钢，防抖磁钢包括至少两个且分别固定于相邻两第一侧壁；
防抖线圈，防抖线圈包括至少两个且分别固定于相邻两第二侧壁，每一防抖线圈分别与一防抖磁钢相对且间隔设置，并共同驱动第一支撑框架绕第一方向或第二方向偏转；
柔性线路板，柔性线路板固定于第二支撑框架的外周侧并与防抖线圈电性连接；以及，
金属片，金属片包括至少两个且分别与两个防抖磁钢相对且间隔设置，金属片与防抖磁钢形成相互磁吸作用。
优选的，支架组件包括支架、第一导柱和第二导柱；支架包括呈矩形环状的支架本体、由支架本体的其中一组对角位置分别弯折延伸的第一支撑壁以及由支架本体的另一组对角位置分别弯折延伸的第二支撑壁；第一支撑壁以及第二支撑壁均与第一支撑框架间隔设置；第一导柱包括两个且沿第一方向延伸并间隔设置，第二导柱包括两个且沿第二方向延伸并间隔设置；支架本体位于镜筒的顶端并与镜筒间隔，第一支撑壁通过第一导柱转动连接至第一支撑框架，第二支撑壁间隔设置于第一支撑框架与第二支撑框架之间并通过第二导柱转动连接至第二支撑框架。
优选的，支架为钢片制成。
优选的，防抖磁钢的中心线、第一导柱的中轴线以及第二导柱的中轴线，在光轴方向上齐平。
优选的，第一支撑框架还包括沿垂直于光轴方向分别贯穿两第一侧壁的第一收容孔，防抖磁钢分别收容于对应的第一收容孔内。
优选的，第二支撑框架还包括沿垂直于光轴方向分别贯穿两第二侧壁的第二收容孔，防抖线圈分别收容于对应的第二收容孔内。
优选的，镜头驱动装置还包括盖设于第二支撑框架的壳体，金属片固定于壳体的内侧。
 有益效果
与相关技术相比，本实用新型镜头驱动装置中，将防抖磁钢分别固定于第一支撑框架的相邻两第一侧壁，将防抖线圈分别固定于相邻两个第二侧壁，每一防抖线圈分别与一防抖磁钢相对且间隔设置，并共同驱动第一支撑框架绕垂直于光轴方向的第一方向或第二方向偏转；与此同时，将金属片分别与两个防抖磁钢相对且间隔设置，使得金属片位于镜头驱动装置的侧边位置，并与防抖磁钢形成相互磁吸作用，以提供防抖回复力，从而实现垂直于光轴方向的防抖（OIS）功能。上述金属片与防抖磁钢共同作用实现防抖回复力的结构设置位于镜头驱动装置的侧边位置，不会占用镜头驱动装置沿光轴方向的厚度，利于薄型化需求，而且实现防抖回复力的结构设计简单，且相对于现有技术中实现防抖功能的金属球面接触结构，有效的简化了装配方式以及降低了生产成本。
 附图说明
为了更清楚地说明本实用新型实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本实用新型的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它的附图，其中：
图1为本实用新型镜头驱动装置的立体结构示意图；
图2为本实用新型镜头驱动装置的部分分解结构示意图；
图3为本实用新型镜头驱动装置的另一部分结构分解示意图；
图4为沿图1中A-A线的剖示图；
图5为沿图1中B-B线的剖示图；
图6为沿图1中C-C线的剖示图；
图7为本实用新型镜头驱动装置中，镜筒的旋转中心位于防抖磁钢的中心位置时，金属片提供回复力的曲线图。
 本发明的最佳实施方式
下面将结合本实用新型实施例中的附图，对本实用新型实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本实用新型的一部分实施例，而不是全部的实施例。基于本实用新型中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，都属于本实用新型保护的范围。
请参阅图1-6所示，本实用新型提供了一种镜头驱动装置100，包括第一支撑框架1、第二支撑框架2、镜筒3、支架组件4、防抖磁钢5、防抖线圈6、柔性线路板7、金属片8以及霍尔传感器9。
第一支撑框架1由第一侧壁11围成具有收容空间的矩形结构。
第二支撑框架2由第二侧壁21围成矩形结构，第二支撑框架2套设于第一支撑框架1并与第一支撑框架1间隔设置。
镜筒3收容于第一支撑框架1的收容空间内并与第一支撑框架1连接，用于安装镜头10。
支架组件4与第一支撑框架1形成转动连接，以使得第一支撑框架1可绕第一方向相对于支架组件4转动；支架组件4与第二支撑框架2形成转动连接，并将第一支撑框架1悬置于第二支撑框架2内，以使得支架组件4可带动第一支撑框架1共同绕第二方向相对于第二支撑框架2转动。其中，第一方向和第二方向垂直于光轴，且分别为平行于第一支撑框架1的两对角线的方向。本实施方式中，定义第一方向为X方向、第二方向为Y方向，光轴方向为Z方向，且第一方向和第二方向分别为平行于第一支撑框架1的两对角线的方向。本实施方式中，第一方向与第二方向相互垂直。
防抖磁钢5包括至少两个且分别固定于相邻两第一侧壁11。更优的，第一支撑框架1还包括沿垂直于光轴方向分别贯穿两第一侧壁11的第一收容孔12，防抖磁钢5分别收容于对应的第一收容孔12内，以减小对镜头驱动装置100的径向空间占用，减小其径向（垂直于光轴的方向）尺寸。
防抖线圈6包括至少两个且分别固定于相邻两个第二侧壁21。每一防抖线圈6分别与一防抖磁钢5相对且间隔设置，并共同驱动第一支撑框架1绕第一方向或第二方向偏转，从而通过第一支撑框架1带动镜筒3沿第一方向或第二方向偏转。
更优的，第二支撑框架2还包括沿垂直于光轴方向分别贯穿两第二侧壁21的第二收容孔22，防抖线圈6分别收容于对应的第二收容孔22内，以减小对镜头驱动装置100的径向空间占用，减小其径向（垂直于光轴的方向）尺寸。
当两个防抖线圈6通电时的电流同向，则两个防抖线圈6对防抖磁钢5产生推力，则推动防抖磁钢5带动镜筒3绕垂直于光轴方向的其中一个轴旋转；当两个防抖线圈6通电时的电流反向，则两个防抖线圈6对防抖磁钢5产生扭力，则推动防抖磁钢5带动镜筒3绕垂直于光轴方向的其中另一轴旋转。
具体而言，本实施方式中，支架组件4包括支架41、第一导柱42和第二导柱43。
支架41包括呈矩形环状的支架本体411、由支架本体411的其中一组对角位置分别弯折延伸的第一支撑壁412以及由支架本体411的另一组对角位置分别弯折延伸的第二支撑壁413；第一支撑壁412以及第二支撑壁413均与第一支撑框架1间隔设置。本实施方式中，支架41为钢片制成，对镜筒3的支撑效果好。
第一导柱42包括两个且沿第一方向（X轴方向）延伸并间隔设置，第二导柱43包括两个且沿第二方向（Y轴方向）延伸并间隔设置。
支架本体411位于镜筒3的顶端并与镜筒3间隔，第一支撑壁412通过第一导柱42转动连接至第一支撑框架1，使得支架41可相对第一支撑框架1沿X轴的轴向转动，也即支架41相对于镜筒3沿X轴的轴向转动；第二支撑壁413间隔设置于第一支撑框架1与第二支撑框架2之间并通过第二导柱43转动连接至第二支撑框架2，使得支架41可带动第一支撑框架1共同相对于第二支撑框架2沿Y轴的轴向转动。
也就是说，当两个防抖线圈6通电时的电流同向，则两个防抖线圈6对防抖磁钢5产生推力，则推动防抖磁钢5带动第一支撑框架1绕平行于第二方向（Y轴方向）的轴旋转；当两个防抖线圈6通电时的电流反向，则两个防抖线圈6对防抖磁钢5产生扭力，则推动防抖磁钢5带动第一支撑框架1绕平行于第一方向（X轴方向）的轴旋转，而镜筒3连接至第一支撑框架1，则随第一支撑框架1同步转动，从而实现镜筒3的OIS功能补偿。
柔性线路板7固定于第二支撑框架2的外周侧并与防抖线圈6电性连接，为防抖线圈6提供电流。更优的，第二支撑框架2的第二侧壁21外周侧向内凹陷形成安装空间20，则防抖线圈6可设置于该安装空间20内，可进充分利用第二支撑框架2的厚度而减少镜头驱动装置100的径向尺寸。
金属片8包括至少两个且分别与两个防抖磁钢5正对且间隔设置，比如将金属片8固定于柔性线路板7远离防抖线圈6的一侧，并与防抖磁钢5正对。金属片8与防抖磁钢5形成相互磁吸作用，从而提供防抖回复力，进而，防抖磁钢5，防抖线圈6及金属片8共同作用实现OIS功能，其实现OIS功能的结构简单，装配简单；金属片8与防抖磁钢5共同作用实现防抖回复力的结构设置于镜头驱动装置100的侧边位置，不会占用镜头驱动装置100沿光轴方向的厚度，利于薄型化需求，而且实现防抖回复力的结构设计简单，相对于现有技术中实现防抖功能的金属球面接触结构，有效的简化了装配方式以及降低了生产成本。本实施方式中，金属片8为钢片。
当然，实现AF功能的驱动线圈和驱动磁钢与相关技术结构类似，在此不作具体说明。
更优的，本实施方式中，进一步将镜筒3的旋转中心位于两个防抖磁钢5的中心位置，即防抖磁钢5的中心线（该中心线垂为直于光轴方向）、第一导柱42的中轴线以及第二导柱43的中轴线，在光轴方向上齐平，也就是说，防抖磁钢5的中心线、第一导柱42的中轴线以及第二导柱43的中轴线位于垂直于光轴的同一平面。此时，如图7所示，金属片8在初始位置时回复力为零，当镜头驱动装置100在不通电的情况下，镜筒3的旋转中心位于两个防抖磁钢5的中心位置，镜筒3旋转过程中，金属片8提供的回复力较为线性，即有效改善OIS功能的稳定。
镜头驱动装置100还包括盖设于第二支撑框架2的壳体30，用于对其它器件进行保护，此时金属片8可固定于壳体30的内侧，使金属片8正对防抖磁钢5。
霍尔传感器9包括两个，分别安装于柔性线路板7靠近防抖磁钢5的一侧并与柔性线路板7电性连接，用于检测镜筒3在第一方向（X轴方向）和第二方向（Y轴方向）的位移。
与相关技术相比，本实用新型镜头驱动装置中，将防抖磁钢分别沿垂直于镜筒的光轴方向固定于第一支撑框架的相邻两第一侧壁，将防抖线圈分别沿垂直于光轴方向固定于相邻两个第二侧壁，每一防抖线圈分别与一防抖磁钢相对且间隔设置，并共同驱动防抖磁钢沿垂直于光轴方向的第一方向或第二方向偏转；与此同时，将金属片分别与两个防抖磁钢相对且间隔设置，使得金属片位于镜头驱动装置的侧边位置，并与防抖磁钢形成相互磁吸作用，以提供防抖回复力，从而实现垂直于光轴方向的防抖（OIS）功能。上述金属片与防抖磁钢共同作用实现防抖回复力的结构设置位于镜头驱动装置的侧边位置，不会占用镜头驱动装置沿光轴方向的厚度，利于薄型化需求，而且实现防抖回复力的结构设计简单，相对于现有技术中实现防抖功能的金属球面接触结构，有效的简化了装配方式以及降低了生产成本。
以上的仅是本实用新型的实施方式，在此应当指出，对于本领域的普通技术人员来说，在不脱离本实用新型创造构思的前提下，还可以做出改进，但这些均属于本实用新型的保护范围。

Claims (7)

  1. 一种镜头驱动装置，其特征在于，所述镜头驱动装置包括：
    第一支撑框架，所述第一支撑框架由第一侧壁围成具有收容空间的矩形结构；
    第二支撑框架，所述第二支撑框架由第二侧壁围成矩形结构，所述第二支撑框架套设于所述第一支撑框架并与所述第一支撑框架间隔设置；
    镜筒，所述镜筒收容于所述收容空间内并与第一支撑框架连接，用于安装镜头；
    支架组件，所述支架组件与所述第一支撑框架形成转动连接，以使得所述第一支撑框架可绕第一方向相对于所述支架组件转动；所述支架组件与所述第二支撑框架形成转动连接，并将所述第一支撑框架悬置于所述第二支撑框架内，以使得所述支架组件可带动所述第一支撑框架共同绕第二方向相对于所述第二支撑框架转动；其中，所述第一方向和所述第二方向垂直于光轴，且分别为平行于所述第一支撑框架的两对角线的方向；
    防抖磁钢，所述防抖磁钢包括至少两个且分别固定于相邻两所述第一侧壁；
    防抖线圈，所述防抖线圈包括至少两个且分别固定于相邻两所述第二侧壁，每一所述防抖线圈分别与一所述防抖磁钢相对且间隔设置，并共同驱动所述第一支撑框架绕所述第一方向或所述第二方向偏转；
    柔性线路板，所述柔性线路板固定于所述第二支撑框架的外周侧并与所述防抖线圈电性连接；以及，
    金属片，所述金属片包括至少两个且分别与两个所述防抖磁钢相对且间隔设置，所述金属片与所述防抖磁钢形成相互磁吸作用。
  2. 根据权利要求1所述的镜头驱动装置，其特征在于，所述支架组件包括支架、第一导柱和第二导柱；所述支架包括呈矩形环状的支架本体、由所述支架本体的其中一组对角位置分别弯折延伸的第一支撑壁以及由所述支架本体的另一组对角位置分别弯折延伸的第二支撑壁；所述第一支撑壁以及所述第二支撑壁均与所述第一支撑框架间隔设置；所述第一导柱包括两个且沿所述第一方向延伸并间隔设置，所述第二导柱包括两个且沿所述第二方向延伸并间隔设置；所述支架本体位于所述镜筒的顶端并与所述镜筒间隔，所述第一支撑壁通过所述第一导柱转动连接至所述第一支撑框架，所述第二支撑壁间隔设置于所述第一支撑框架与所述第二支撑框架之间并通过所述第二导柱转动连接至所述第二支撑框架。
  3. 根据权利要求2所述的镜头驱动装置，其特征在于，所述支架为钢片制成。
  4. 根据权利要求2所述的镜头驱动装置，其特征在于，所述防抖磁钢的中心线、所述第一导柱的中轴线以及所述第二导柱的中轴线，在光轴方向上齐平。
  5. 根据权利要求1所述的镜头驱动装置，其特征在于，所述第一支撑框架还包括沿垂直于所述光轴方向分别贯穿两所述第一侧壁的第一收容孔，所述防抖磁钢分别收容于对应的所述第一收容孔内。
  6. 根据权利要求1所述的镜头驱动装置，其特征在于，所述第二支撑框架还包括沿垂直于所述光轴方向分别贯穿两所述第二侧壁的第二收容孔，所述防抖线圈分别收容于对应的所述第二收容孔内。
  7. 根据权利要求1所述的镜头驱动装置，其特征在于，所述镜头驱动装置还包括盖设于所述第二支撑框架的壳体，所述金属片固定于所述壳体的内侧。
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