WO2022000554A1 - 镜头驱动装置和电子设备 - Google Patents

镜头驱动装置和电子设备 Download PDF

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Publication number
WO2022000554A1
WO2022000554A1 PCT/CN2020/101503 CN2020101503W WO2022000554A1 WO 2022000554 A1 WO2022000554 A1 WO 2022000554A1 CN 2020101503 W CN2020101503 W CN 2020101503W WO 2022000554 A1 WO2022000554 A1 WO 2022000554A1
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WO
WIPO (PCT)
Prior art keywords
lens
lens barrel
piezoelectric
driving device
housing
Prior art date
Application number
PCT/CN2020/101503
Other languages
English (en)
French (fr)
Inventor
史卫领
郭顺
王洪兴
Original Assignee
诚瑞光学(常州)股份有限公司
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Filing date
Publication date
Application filed by 诚瑞光学(常州)股份有限公司 filed Critical 诚瑞光学(常州)股份有限公司
Publication of WO2022000554A1 publication Critical patent/WO2022000554A1/zh

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • 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
    • G03B30/00—Camera modules comprising integrated lens units and imaging units, specially adapted for being embedded in other devices, e.g. mobile phones or vehicles
    • 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
    • G03B5/06—Swinging lens about 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
    • G03B5/00—Adjustment of optical system relative to image or object surface other than for focusing
    • G03B5/08—Swing backs
    • 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
    • H02K33/18—Motors 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules

Definitions

  • the utility model relates to the technical field of imaging equipment, in particular to a lens driving device and electronic equipment.
  • the existing lens driving device has a complex structure, and can only drive the lens to rotate in the direction perpendicular to the optical axis, and the rotation direction is not comprehensive enough, so it is difficult to achieve a good anti-shake function.
  • the purpose of the utility model is to provide a lens driving device and electronic equipment which can realize the rotation with the optical axis of the lens as the center of the circle.
  • one aspect of the present utility model provides a lens driving device, and the lens driving device includes:
  • the lens barrel is used to mount the lens
  • the casing includes a receiving cavity, the lens barrel is installed in the receiving cavity, and the lens barrel and the casing are rotatably connected;
  • a piezoelectric drive assembly and a second drive assembly both of which are disposed between the lens barrel and the housing;
  • the piezoelectric drive assembly is used to realize the movement or rotation of the lens barrel in the plane perpendicular to the optical axis, and the second drive assembly is used to realize the movement or rotation of the lens barrel in the plane of the optical axis;
  • the piezoelectric drive assembly includes a piezoelectric deformation portion and a connecting member that supports and fixes the piezoelectric deformation portion between the lens barrel and the housing.
  • the connector includes a first bracket and a second bracket, one end of the first bracket is fixed to one of the lens barrel and the housing, and the other end is fixed to the middle position of the piezoelectric deformation portion
  • One end of the second bracket is fixed to the two ends of the piezoelectric deformation portion along the direction perpendicular to the optical axis, and the other end is fixed to the other of the lens barrel and the housing.
  • the piezoelectric deformation portion includes at least two stacked piezoelectric layers, so that the piezoelectric deformation portion generates a driving force perpendicular to the optical axis, and the acting direction of the driving force does not pass through the casing. geometric center.
  • the piezoelectric deformation portion further includes an elastic sheet sandwiched between the at least two stacked piezoelectric layers, and one end of the second bracket is fixed to two sides of the elastic sheet along the direction perpendicular to the optical axis. end, and the other end is fixed to the lens barrel.
  • the casing is configured as a quadrangular prism, and includes a bottom plate, a plurality of side plates extending from the bottom plate, and a cover plate connected with the plurality of side plates; the bottom plate, the plurality of side plates and the The cover plate surrounds the accommodating cavity, and the cover plate is provided with a light-penetrating hole penetrating the cover plate.
  • the first bracket is integrally formed with one of the lens barrel and the housing, and/or the second support is integrally formed with the other of the lens barrel and the housing.
  • the second driving assembly includes a driving coil and a magnetic member that are disposed opposite to each other, and one of the driving coil and the magnetic member is fixed to the lens barrel, and the other is fixed to the housing.
  • the lens driving device further comprises a fulcrum structure, and the fulcrum structure is located in the receiving cavity;
  • the lens barrel includes a bottom wall on one side away from the light-passing hole, and several side walls extending from the circumference of the bottom wall toward the light-passing hole;
  • the fulcrum structures are respectively connected with the bottom wall of the lens barrel and the bottom plate of the casing, and the fulcrum structures are used to support the lens barrel and enable the lens barrel to rotate relative to the casing.
  • the fulcrum structure includes a ball and a rolling groove
  • the ball is disposed on the bottom wall
  • the rolling groove is disposed on the bottom plate
  • the ball can rotate relative to the rolling groove
  • Another aspect of the present invention provides an electronic device, which includes the above-mentioned lens driving device.
  • the piezoelectric drive assembly is used to realize the movement or rotation of the lens barrel in the plane perpendicular to the optical axis
  • the second drive assembly is used to realize the movement or rotation of the lens barrel in the plane of the optical axis, so that the lens in the lens barrel has the Multi-directional anti-shake such as roll, pitch and yaw, and roll is independent of pitch and yaw, while rolling, it does not affect pitch and yaw, the anti-shake effect is good, and the connection method of the piezoelectric deformation part is better, easy to accomplish.
  • FIG. 1 is a schematic three-dimensional structure diagram of a lens driving device provided by an embodiment of the present invention.
  • FIG. 2 is a schematic diagram of an exploded structure of a lens driving device provided by an embodiment of the present invention
  • FIG. 3 is a schematic three-dimensional structure diagram of the cooperation of the housing and the boss in the lens driving device
  • Fig. 4 is the sectional structure schematic diagram along the A-A direction in Fig. 1;
  • FIG. 5 is a schematic three-dimensional structural diagram of the cooperation between the piezoelectric drive assembly and the lens barrel of the lens drive device according to an embodiment of the present invention
  • FIG. 6 is a schematic diagram of an exploded structure of a piezoelectric driving component of a lens driving device according to an embodiment of the present invention
  • FIG. 7 is a schematic diagram of a lens barrel of a lens driving device according to an embodiment of the present invention being deflected along a rolling direction under the action of a piezoelectric driving component;
  • FIG. 8 is a schematic diagram of a piezoelectric driving component of a lens driving device provided by an embodiment of the present invention after being powered on;
  • FIG. 9 is a schematic diagram of an exploded structure of a second driving assembly of a lens driving device according to an embodiment of the present invention.
  • FIG. 10 is a schematic diagram of a lens barrel deflected in one direction under the action of a second driving component according to an embodiment of the present invention
  • FIG. 11 is a schematic diagram of the lens barrel deflected in another direction under the action of the second driving component according to an embodiment of the present invention.
  • FIG. 12 is a schematic perspective view of an elastic component provided by an embodiment of the present invention.
  • an embodiment of the present invention provides a lens driving device 1, the lens driving device 1 is used to drive the lens, so that the lens can achieve anti-shake in rolling, pitch and yaw directions.
  • the lens driving device 1 includes a housing 10 , a lens barrel 20 , a driving component 30 , and an elastic component 40 .
  • the lens barrel 20 , the driving component 30 and the elastic component 40 are installed in the casing 10 , wherein the lens barrel 20 accommodates a lens, the lens barrel 20 and the casing 10 are rotatably connected, and the elastic component 40 is respectively connected with the casing 10 and the lens barrel.
  • the driving assembly 30 is used to drive the lens barrel 20 to rotate relative to the housing 10 in pitch, yaw and rolling directions; as an illustration, the rolling direction is the Z-axis direction, which is also the light of the lens.
  • the axis directions, the X-axis and the Y-axis are respectively perpendicular to the Z-axis and the X-axis and the Y-axis are perpendicular to each other.
  • the casing 10 is set in a quadrangular prism shape, and the casing 10 includes a bottom plate 11 , a side plate 12 extending from the bottom plate 11 and a cover plate 13 connected with the side plate 12 ; wherein the bottom plate 11 , the side plate 12 and The cover plate 13 encloses a receiving cavity 14 .
  • the cover plate 13 is provided with a light-passing hole 131 communicating with the receiving cavity 14 .
  • the side plate 12 and the bottom plate 11 are vertical.
  • the cover plate 13 and the bottom plate 11 are parallel.
  • the side panels 12 include four.
  • the shape of the lens barrel 20 matches the shape of the lens.
  • the material of the lens barrel 20 is not limited, for example, it can be plastic.
  • the lens barrel 20 includes a bottom wall 21 on a side away from the light-passing hole 131 and several side walls 22 extending from the bottom wall 21 toward the light-passing hole 131 .
  • the bottom wall 21 and the side wall 22 are vertical. In this application, there are four side walls 22, and two adjacent side walls 22 are perpendicular to each other.
  • the lens driving device 1 further includes a connecting member 70
  • the driving component 30 includes a piezoelectric driving component 31 and a second driving component 32 .
  • the piezoelectric drive assembly 31 and the second drive assembly 32 are both disposed between the housing 10 and the lens barrel 20.
  • the piezoelectric drive assembly 31 is connected to the connector 70, and the connector 70 is respectively connected to the housing 10 and the lens barrel 20, and the pressure
  • the electric drive assembly 31 interacts with the connector 70 to realize the movement or rotation of the lens barrel 20 in a plane perpendicular to the optical axis;
  • the second drive assembly 32 is respectively connected with the housing 10 and the lens barrel 20 to realize the lens barrel 20 Movement or rotation in the plane of the optical axis.
  • the plurality of piezoelectric driving components 31 are arranged around the lens barrel 20 , and the plurality of piezoelectric driving components 31 are located in a first plane, and the first plane is perpendicular to the optical axis of the lens .
  • the piezoelectric drive assembly 31 includes a piezoelectric deformation portion 301 and a connecting member 70 that supports and fixes the piezoelectric deformation portion 301 between the lens barrel 20 and the housing 10 ; specifically, the piezoelectric deformation portion The number of 301 is four, and the four piezoelectric deformation parts 301 are circumferentially arranged between the four side plates 12 and the four side walls 22. The cooperation of the four piezoelectric deformation parts 301 and the connecting piece 70 makes the pressure
  • the electrical deformation part 301 generates a driving force perpendicular to the optical axis, and the action direction of the driving force does not pass through the geometric center of the housing 10 , and the driving force is used to correct the shake of the lens barrel 20 in the rolling direction.
  • the connector 70 includes a first bracket 71 and a second bracket 72, one end of the first bracket 71 is fixed to one of the lens barrel 20 and the housing 10, and the other end is fixed to the piezoelectric deformation
  • the other one of the housings 10 it can be understood that the first bracket 71 is integrally formed with one of the lens barrel 20 and the housing 10, and/or the second bracket 72 and the The other of the lens barrel 20 and the housing 10 is integrally formed.
  • the piezoelectric deformation part 301 includes a first piezoelectric layer 311 and a second piezoelectric layer 312, the first piezoelectric layer 311 and the second piezoelectric layer 312 are stacked and connected; When the two piezoelectric layers 312 are energized, both the first piezoelectric layer 311 and the second piezoelectric layer 312 are deformed to generate a driving force perpendicular to the optical axis, and the action direction of the driving force does not pass through the casing 10 . geometric center.
  • the piezoelectric deformation portion 301 further includes an elastic sheet 313 sandwiched between the at least two stacked piezoelectric layers, and one end of the second bracket 72 is fixed to the elastic sheet 313 Both ends along the direction perpendicular to the optical axis, and the other end is fixed to the lens barrel 20 .
  • the first piezoelectric layer 311 and the second piezoelectric layer 312 when the first piezoelectric layer 311 and the second piezoelectric layer 312 are subjected to an external voltage, the first piezoelectric layer 311 is shortened, the second piezoelectric layer 312 is elongated, or the first piezoelectric layer 311
  • the second piezoelectric layer 312 is elongated and the second piezoelectric layer 312 is shortened, so that the piezoelectric deformation portion 301 is concave or convex at the same time, and the elastic sheet 313 is concave or convex as the first piezoelectric layer 311 and the second piezoelectric layer 312 are deformed. , so as to drive the movement or rotation of the lens barrel 20 in the housing 10 along the plane perpendicular to the optical axis, so as to realize the lens shake correction in the rolling direction. It can be understood that the elastic sheet 313 may not be provided.
  • the plurality of second driving components 32 are disposed around the lens barrel 20 , the plurality of second driving components 32 are located in the second plane, the second plane perpendicular to the optical axis.
  • the first plane and the second plane are not the same plane, and the first plane and the second plane are parallel.
  • each second driving component 32 includes a The driving coil 321 and the magnetic member 322, any one of the driving coil 321 and the magnetic member 322 is mounted on the side plate 12 of the housing 10, and the other is mounted on the side wall 22 of the lens barrel 20;
  • One side wall 22 is disposed opposite to one side wall 22 of the lens barrel 20; for example, the driving coil 321 is installed on the side wall 22 of the lens barrel 20, the magnetic member 322 is installed on the side plate 12 of the housing 10, or the driving coil 321 It is installed on the side plate 12 of the housing 10, and the magnetic member 322 is installed on the side wall 22 of the lens barrel 20.
  • a driving force can be generated between the plurality of driving coils 321 and the plurality of magnetic members 322, and the driving force is used to realize The movement or rotation of the lens barrel 20 in a plane perpendicular to the optical axis.
  • the driving coil 321 and several magnetic members 322 can cooperate to generate a driving force, which can make the lens barrel 20 rotate in the pitch direction, wherein the pitch direction is a plane direction perpendicular to the Y axis, and the mirror
  • the shake compensation of the barrel 20 in the pitch direction can also make the lens barrel 20 rotate in the yaw direction, wherein the yaw direction is a plane direction perpendicular to the X axis, so as to realize the shake compensation of the lens barrel 20 in the yaw direction.
  • the magnetic member 322 is a magnet, a magnetic steel, a permanent magnet, or the like.
  • the lens barrel driving device 1 of the present invention further includes a fulcrum structure 50 disposed between the lens barrel 20 and the housing 10.
  • the fulcrum structure 50 is located in the receiving cavity 14, and the fulcrum structure 50 is respectively Connected with the bottom plate 11 and the bottom wall 21 of the lens barrel 20 , the lens barrel 20 can rotate relative to the casing 10 through the fulcrum structure 50 .
  • the fulcrum structure 50 includes a sphere 51 and a rolling groove 521.
  • the sphere 51 is provided on the bottom wall 21, and the rolling groove 521 is set on the bottom plate 11.
  • the sphere 51 can rotate relative to the rolling groove 521;
  • the positions of 51 and the rolling groove 521 are not limited too much, as long as the lens barrel 20 can rotate relative to the housing 10 through the fulcrum structure 50 .
  • the fulcrum structure 50 includes a sphere 51 and a boss 52, the boss 52 is provided with a rolling groove 521 that cooperates with the sphere 51, one of the sphere 51 and the boss 52 is connected to the bottom plate 11 of the housing 10, the sphere 51 and the The other one of the bosses 52 is connected to the bottom wall 21 of the lens barrel 20, the sphere 51 is partially located in the rolling groove 521, and the sphere 51 can rotate relative to the boss 52; The force is more stable and the rotation accuracy is better.
  • the fulcrum structure 50 further includes a connecting plate 53 , and the sphere 51 is connected to the bottom wall 21 of the lens barrel 20 through the connecting plate 53 .
  • the connecting plate 53 and the boss 52 are integrally formed.
  • the lens driving device 1 further includes a power supply board 60 , the power supply board 60 is electrically connected with the driving component 30 , and the driving component 30 is powered by the power supply board 60 .
  • the power supply board 60 may be a flexible circuit board.
  • the lens driving device 1 further includes an elastic component 40
  • the elastic component 40 is respectively connected with the side wall 22 of the lens barrel 20 and the side plate 12 of the housing 10
  • the elastic component 40 is used for supporting the lens barrel 20, and also used for The lens barrel 20 is reset after the drive assembly 30 is powered off.
  • the elastic assembly 40 includes a first connecting portion 41 connected with the lens barrel 20 , a second connecting portion 43 connected with the housing 10 , and a second connecting portion 43 connected to the first connecting portion.
  • the elastic member 42 between the first connecting portion 41 and the second connecting portion 43 and elastically connecting the first connecting portion 41 and the second connecting portion 43 .
  • the present invention also provides an electronic device, which includes the above-mentioned lens driving device 1 .
  • the type of the electronic device is not limited, and the electronic device may be a smart terminal, such as a mobile phone, a tablet, or a camera and other devices including a lens.
  • the lens driving device 1 is installed on an electronic device such as a mobile phone or a tablet, the housing 10 can be fixed on the electronic device, thereby realizing the fixing of the lens driving device 1 on the electronic device.

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

Abstract

一种镜头驱动装置和电子设备，所述镜头驱动装置包括：镜筒、壳体、压电驱动组件和第二驱动组件，所述镜筒用于安装镜头，所述壳体包括收容腔，所述镜筒安装在所述收容腔内，所述镜筒和所述壳体可转动连接；所述压电驱动组件和所述第二驱动组件均设置于所述镜筒和所述壳体之间；所述压电驱动组件用于实现所述镜筒在垂直于光轴所在平面内的移动或转动。该镜头驱动装置，使镜筒内的镜头具备了滚动、俯仰和偏摆等多方向的防抖功能，且滚动独立于俯仰偏摆，滚动的同时，不影响俯仰和偏摆，防抖效果好，且压电变形部的连接方式较佳，易于实现。

Description

镜头驱动装置和电子设备 技术领域
本实用新型涉及摄像设备技术领域，尤其涉及一种镜头驱动装置和电子设备。
 技术问题
现有的镜头驱动装置，结构复杂，仅能驱动镜头实现垂直光轴方向的转动，转动方向不够全面，难以实现良好的防抖功能。
因此亟需一种防抖功能良好的镜头驱动装置。
 技术解决方案
本实用新型的目的在于提供一种能够实现以镜头光轴为圆心转动的镜头驱动装置和电子设备。
本实用新型的技术方案如下：本实用新型一方面提供一种镜头驱动装置，所述镜头驱动装置包括：
镜筒，所述镜筒用于安装镜头；
壳体，所述壳体包括收容腔，所述镜筒安装在所述收容腔内，所述镜筒和所述壳体可转动连接；
压电驱动组件和第二驱动组件，所述压电驱动组件和所述第二驱动组件均设置于所述镜筒和所述壳体之间；
所述压电驱动组件用于实现所述镜筒在垂直于光轴所在平面内的移动或转动，所述第二驱动组件用于实现所述镜筒在光轴所在平面内的移动或转动；
所述压电驱动组件包括压电变形部以及将所述压电变形部支撑固定于所述镜筒和所述壳体之间的连接件。
优选地，所述连接件包括第一支架和第二支架，所述第一支架一端固定于所述镜筒和所述壳体其中之一，另一端固定于所述压电变形部的中间位置，所述第二支架一端固定于所述压电变形部的沿垂直光轴方向的两端，另一端固定于所述镜筒和所述壳体其中之另一。
优选地，所述压电变形部包括至少两个叠设的压电层，使得所述压电变形部产生垂直光轴的驱动力，且所述驱动力的作用方向不经过所述壳体的几何中心。
优选地，所述压电变形部还包括夹设于所述至少两个叠设的压电层之间的弹性片，所述第二支架一端固定于所述弹性片沿垂直光轴方向的两端，另一端固定于所述镜筒。
优选地，所述壳体设置为四棱柱形，包括底板、从所述底板上延伸的若干侧板以及与所述若干侧板连接的盖板；所述底板、所述若干侧板和所述盖板围设成所述收容腔，所述盖板上开设有贯穿所述盖板的通光孔。
优选地，所述第一支架与所述镜筒和所述壳体其中之一一体成型，和/或所述第二支架与所述镜筒和所述壳体其中另一一体成型。
优选地，所述第二驱动组件包括正对设置的驱动线圈和磁性件，所述驱动线圈和所述磁性件中的其一固定于所述镜筒，另一固定于所述壳体。
优选地，所述镜头驱动装置还包括支点结构，所述支点结构位于所述收容腔内；
所述镜筒包括远离所述通光孔一侧的底壁、和从所述底壁的周部朝通光孔方向延伸的若干侧壁；
所述支点结构分别与所述镜筒的底壁、所述壳体的底板连接，所述支点结构用于支撑所述镜筒，并能使所述镜筒相对所述壳体转动。
优选地，所述支点结构包括球体和滚槽，所述球体设置于所述底壁，所述滚槽设置于所述底板，所述球体可相对所述滚槽转动。
本实用新型另一方面提供一种电子设备，所述电子设备包括上述镜头驱动装置。
 有益效果
压电驱动组件用于实现镜筒在垂直于光轴所在平面内的移动或转动，第二驱动组件用于实现镜筒在光轴所在平面内的移动或转动，从而使镜筒内的镜头具备了滚动、俯仰和偏摆等多方向的防抖，且滚动独立于俯仰偏摆，滚动的同时，不影响俯仰和偏摆，防抖效果好，且压电变形部的连接方式较佳，易于实现。
 附图说明
图1为本实用新型一实施例提供的镜头驱动装置的立体结构示意图；
图2为本实用新型一实施例提供的镜头驱动装置的爆炸结构示意图；
图3为镜头驱动装置中壳体和凸台配合的立体结构示意图；
图4为图1中沿A-A向的剖视结构示意图；
图5为为本实用新型一实施例提供的镜头驱动装置的压电驱动组件与镜筒配合的立体结构示意图；
图6为本实用新型一实施例提供的镜头驱动装置的压电驱动组件的爆炸结构示意图；
图7为本实用新型一实施例提供的镜头驱动装置的镜筒在压电驱动组件的作用下沿滚动方向发生偏转的示意图；
图8为本实用新型一实施例提供的镜头驱动装置的压电驱动组件通电后的示意图；
图9为本实用新型一实施例提供的镜头驱动装置的第二驱动组件的爆炸结构示意图；
图10为本实用新型一实施例提供的镜筒在第二驱动组件的作用下沿一个方向发生偏转的示意图；
图11为本实用新型一实施例提供的镜筒在第二驱动组件的作用下沿另一个方向发生偏转的示意图；
图12为本实用新型一实施例提供的弹性组件的立体示意图。
 本发明的实施方式
为了使本实用新型的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本实用新型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用以解释本实用新型，并不用于限定本实用新型。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他实施例，都属于本实用新型保护的范围。
本实用新型的说明书和权利要求书及上述附图中的术语“第一”、“第二”、“第三”、“第四”等(如果存在)是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换，以便这里描述的实施例能够以除了在这里图示或描述的内容以外的顺序实施。此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产 品或设备固有的其它步骤或单元。
需要说明的是，在本实用新型中涉及“第一”、“第二”等的描述仅用于描述目的，而不能理解为指示或暗示其相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。另外，各个实施例之间的技术方案可以相互结合，但是必须是以本领域普通技术人员能够实现为基础，当技术方案的结合出现相互矛盾或无法实现时应当认为这种技术方案的结合不存在，也不在本实用新型要求的保护范围之内。
 
请参看图1-2，本实用新型的一实施方式提供了一种镜头驱动装置1，镜头驱动装置1用于驱动镜头，以使镜头实现滚动、俯仰和偏摆方向的防抖。镜头驱动装置1包括壳体10、镜筒20、驱动组件30、弹性组件40。镜筒20、驱动组件30、弹性组件40安装于壳体10内，其中，镜筒20内收容有镜头，镜筒20和壳体10可转动连接，弹性组件40分别与壳体10、镜筒20连接，以弹性支撑镜筒20，驱动组件30用于驱动镜筒20相对壳体10发生俯仰，偏摆和滚动方向的转动；作为示意的，滚动方向为Z轴方向，也为镜头的光轴方向，X轴和Y轴方向分别垂直于Z轴方向且X轴和Y轴方向之间相互垂直。
请参看图3，壳体10设置为四棱柱形，壳体10包括底板11、从底板11上延伸的侧板12以及与侧板12连接的盖板13；其中，底板11、侧板12和盖板13围设成收容腔14，盖板13上开设有与收容腔14连通的通光孔131，镜筒20、驱动组件30、弹性组件40和支点结构50位于收容腔14内。优选地，侧板12和底板11垂直。优选地，盖板13和底板11平行。本申请中，侧板12包括四个。
镜筒20的形状和镜头的形状相匹配。镜筒20的材质不做限定，如可以为塑料。镜筒20包括远离通光孔131一侧的底壁21和从底壁21朝向通光孔131延伸的若干侧壁22。优选地，底壁21和侧壁22垂直。本申请中，侧壁22包括4个，相邻的两个侧壁22之间相互垂直。
请一并参看图4-6，镜头驱动装置1还包括连接件70，驱动组件30包括压电驱动组件31和第二驱动组件32。压电驱动组件31和第二驱动组件32均设置于壳体10和镜筒20之间，压电驱动组件31与连接件70连接，连接件70分别与壳体10和镜筒20连接，压电驱动组件31与连接件70相互作用用于实现镜筒20在垂直于光轴所在平面内的移动或转动；第二驱动组件32分别与壳体10、镜筒20连接，用于实现镜筒20在光轴所在平面内的移动或转动。
在本实施例中，压电驱动组件31为多个，多个压电驱动组件31围绕镜筒20设置，多个压电驱动组件31位于第一平面内，第一平面垂直于镜头的光轴。
所述压电驱动组件31包括压电变形部301以及将所述压电变形部301支撑固定于所述镜筒20和所述壳体10之间的连接件70；具体地，压电变形部301的数量为四个，四个压电变形部301周向布设于四个侧板12和四个侧壁22之间，四个压电变形部301和连接件70的配合，使得所述压电变形部301产生垂直光轴的驱动力，且所述驱动力的作用方向不经过所述壳体10的几何中心，驱动力用于实现镜筒20在滚动方向上的抖动矫正。
进一步地，连接件70包括第一支架71和第二支架72，所述第一支架71一端固定于所述镜筒20和所述壳体10其中之一，另一端固定于所述压电变形部301的中间位置；第二支架72为两个，所述第二支架72一端固定于所述压电变形部301的沿垂直光轴方向的两端，另一端固定于所述镜筒20和所述壳体10其中之另一；可以理解，所述第一支架71与所述镜筒20和所述壳体10其中之一一体成型，和/或所述第二支架72与所述镜筒20和所述壳体10其中另一一体成型。
更为具体地，压电变形部301包括第一压电层311和第二压电层312，第一压电层311和第二压电层312叠设连接；第一压电层311和第二压电层312在通电时，第一压电层311和第二压电层312均发生形变以产生垂直光轴的驱动力，且所述驱动力的作用方向不经过所述壳体10的几何中心。
在本实施例中，所述压电变形部301还包括夹设于所述至少两个叠设的压电层之间的弹性片313，所述第二支架72一端固定于所述弹性片313沿垂直光轴方向的两端，另一端固定于所述镜筒20。
请查看图7和8，在第一压电层311和第二压电层312受到外部电压作用下第一压电层311缩短、第二压电层312伸长，或第一压电层311伸长、第二压电层312缩短，以使压电变形部301同时内凹或者外凸，弹性片313随着第一压电层311和第二压电层312变形而内凹或者外凸，以驱动镜筒20在壳体10内沿垂直于光轴所在平面内的移动或转动，实现镜头在滚动方向上的抖动矫正。可以理解，也可以不设置弹性片313。
请再参看图4、9、10及11，第二驱动组件32为多个，多个第二驱动组件32围绕镜筒20设置，多个第二驱动组件32位于第二平面内，第二平面垂直于光轴。其中，第一平面和第二平面不是同一平面，第一平面和第二平面平行。
在一实施例中，第二驱动组件32为四个，周向布设于四个侧板12和镜筒20的四个侧壁22之间，每一第二驱动组件32均包括正对设置的驱动线圈321和磁性件322，驱动线圈321和磁性件322中任意一者安装至壳体10的一侧板12，另外一者安装至镜筒20的一侧壁22；其中，壳体10的一侧壁22与镜筒20的一侧壁22相对设置；如，驱动线圈321安装在镜筒20的侧壁22上、磁性件322安装在壳体10的侧板12上，或驱动线圈321安装在壳体10的侧板12上、磁性件322安装在镜筒20的侧壁22上，只需要满足若干驱动线圈321分别与若干磁性件322之间能够产生驱动力，驱动力用于实现镜筒20在垂直于光轴所在平面内的移动或转动。
具体地，请参看图10和11，驱动线圈321与若干磁性件322配合可以产生驱动力，可以使镜筒20在俯仰方向进行旋转，其中，俯仰方向为垂直于Y轴的平面方向，实现镜筒20在俯仰方向的抖动补偿，也可以使镜筒20在偏摆方向进行旋转，其中，偏摆方向为垂直于X轴的平面方向，实现镜筒20在偏摆方向的抖动补偿。
优选地，该磁性件322为磁铁、磁钢或永磁体等。
请一并参阅图3和图4，本实用新型的镜筒驱动装置1还包括设置在镜筒20与壳体10之间的支点结构50，支点结构50位于收容腔14内，支点结构50分别与底板11、镜筒20的底壁21连接，镜筒20通过支点结构50可相对壳体10转动。
在本实施例中，支点结构50包括球体51和滚槽521，球体51设置于底壁21，滚槽521中设置于底板11，球体51可相对滚槽521转动；当然，本实施例对球体51和滚槽521的位置不做过多限定，只要满足镜筒20通过支点结构50可相对壳体10转动即可。
优选地，支点结构50包括球体51和凸台52，凸台52上开设与球体51配合的滚槽521，球体51和凸台52两者中一个与壳体10的底板11连接，球体51和凸台52中另一个与镜筒20的底壁21连接，球体51部分位于滚槽521内，球体51可相对凸台52转动；通过设置支点结构50使得镜筒20相对壳体10的转动时受力更为稳定，转动的精度更优。
优选地，支点结构50还包括连接板53，球体51通过连接板53与镜筒20的底壁21连接。优选地，连接板53与凸台52一体成型。
请再参看图2，镜头驱动装置1还包括供电板60，供电板60与驱动组件30电性连接，驱动组件30通过供电板60供电。供电板60可以为柔性电路板。
请参看图12，镜头驱动装置1还包括弹性组件40，弹性组件40分别与镜筒20的侧壁22及壳体10的侧板12连接，弹性组件40用于支撑镜筒20，还用于在驱动组件30断电后使镜筒20复位，具体地，弹性组件40包括与镜筒20连接的第一连接部41、与壳体10连接的第二连接部43以及设置于第一连接部41和第二连接部43之间且弹性连接第一连接部41和第二连接部43的弹性件42。
本实用新型还提供一种电子设备，电子设备包括上述的镜头驱动装置1。电子设备的类型不做限定，电子设备可以是智能终端，如手机，平板，电子设备还可以是照相机等包括镜头的设备。当镜头驱动装置1安装于手机、平板等电子设备时，可以通过将壳体10固定于电子设备，从而实现镜头驱动装置1在电子设备上的固定。
需要说明的是，本实用新型实施例中所有方向性指示（诸如上、下、内、外、顶部、底部……）仅用于解释在某一特定姿态（如附图所示）下各部件之间的相对位置关系等，如果该特定姿态发生改变时，则该方向性指示也相应地随之改变。
还需要说明的是，当元件被称为“固定于”或“设置于”另一个元件上时，该元件可以直接在另一个元件上或者可能同时存在居中元件。当一个元件被称为“连接”另一个元件，它可以是直接连接另一个元件或者可能同时存在居中元件。
以上所述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 (10)

  1. 一种镜头驱动装置，其特征在于，所述镜头驱动装置包括：
    镜筒，所述镜筒用于安装镜头；
    壳体，所述壳体包括收容腔，所述镜筒安装在所述收容腔内，所述镜筒和所述壳体可转动连接；
    压电驱动组件和第二驱动组件，所述压电驱动组件和所述第二驱动组件均设置于所述镜筒和所述壳体之间；
    所述压电驱动组件用于实现所述镜筒在垂直于光轴所在平面内的移动或转动，所述第二驱动组件用于实现所述镜筒在光轴所在平面内的移动或转动；
    所述压电驱动组件包括压电变形部以及将所述压电变形部支撑固定于所述镜筒和所述壳体之间的连接件。
  2. 如权利要求1所述的镜头驱动装置，其特征在于：所述连接件包括第一支架和第二支架，所述第一支架一端固定于所述镜筒和所述壳体其中之一，另一端固定于所述压电变形部的中间位置，所述第二支架一端固定于所述压电变形部的沿垂直光轴方向的两端，另一端固定于所述镜筒和所述壳体其中之另一。
  3. 如权利要求2所述的镜头驱动装置，其特征在于：所述压电变形部包括至少两个叠设的压电层，使得所述压电变形部产生垂直光轴的驱动力，且所述驱动力的作用方向不经过所述壳体的几何中心。
  4. 如权利要求3所述的镜头驱动装置，其特征在于：所述压电变形部还包括夹设于所述至少两个叠设的压电层之间的弹性片，所述第二支架一端固定于所述弹性片沿垂直光轴方向的两端，另一端固定于所述镜筒。
  5. 如权利要求3所述的镜头驱动装置，其特征在于：所述壳体设置为四棱柱形，包括底板、从所述底板上延伸的若干侧板以及与所述若干侧板连接的盖板；所述底板、所述若干侧板和所述盖板围设成所述收容腔，所述盖板上开设有贯穿所述盖板的通光孔。
  6. 如权利要求2所述的镜头驱动装置，其特征在于：所述第一支架与所述镜筒和所述壳体其中之一一体成型，和/或所述第二支架与所述镜筒和所述壳体其中另一一体成型。
  7. 如权利要求1所述的镜头驱动装置，其特征在于：所述第二驱动组件包括正对设置的驱动线圈和磁性件，所述驱动线圈和所述磁性件中的其一固定于所述镜筒，另一固定于所述壳体。
  8. 如权利要求5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支点结构，所述支点结构位于所述收容腔内；
    所述镜筒包括远离所述通光孔一侧的底壁、和从所述底壁的周部朝通光孔方向延伸的若干侧壁；
    所述支点结构分别与所述镜筒的底壁、所述壳体的底板连接，所述支点结构用于支撑所述镜筒，并能使所述镜筒相对所述壳体转动。
  9. 如权利要求8所述的镜头驱动装置，其特征在于：所述支点结构包括球体和滚槽，所述球体设置于所述底壁，所述滚槽设置于所述底板，所述球体可相对所述滚槽转动。
  10. 一种电子设备，其特征在于：所述电子设备包括权利要求1~9任一项所述的镜头驱动装置。
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