WO2022062162A1 - 一种镜头驱动装置 - Google Patents

一种镜头驱动装置 Download PDF

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Publication number
WO2022062162A1
WO2022062162A1 PCT/CN2020/131931 CN2020131931W WO2022062162A1 WO 2022062162 A1 WO2022062162 A1 WO 2022062162A1 CN 2020131931 W CN2020131931 W CN 2020131931W WO 2022062162 A1 WO2022062162 A1 WO 2022062162A1
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WIPO (PCT)
Prior art keywords
groove
axis
movable body
driving device
lens driving
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PCT/CN2020/131931
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English (en)
French (fr)
Inventor
林育丞
Original Assignee
诚瑞光学(深圳)有限公司
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Publication of WO2022062162A1 publication Critical patent/WO2022062162A1/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
    • 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
    • G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
    • G02B7/08—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted to co-operate with a remote control mechanism
    • 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

Definitions

  • the present invention relates to the technical field of driving devices, and in particular, to a lens driving device.
  • lens driving devices are widely used in many photography devices.
  • the application of the lens driving device to various portable electronic devices, such as mobile phones, tablet computers, etc., is especially accepted by consumers.
  • a drive mechanism applicable to a lens drive device of a general portable electronic device is generally formed of a coil and a permanent magnet, and the coil is fixed to the outer periphery of the imaging lens frame.
  • the coil moves the imaging lens frame and moves the imaging lens frame along the optical axis direction of the lens by the action of electromagnetic force, thereby enabling focusing.
  • the lens sometimes constantly moves in a direction orthogonal to the optical axis of the lens. In this way, in the lens driving device, the influence caused by hand shake cannot be avoided, and the quality of the captured image is degraded.
  • a metal double ball suspension structure is adopted, and the balls at the four corners are arranged in the grooves to provide the rotational freedom of the two axes arranged diagonally.
  • this structure can reduce the assembly process is complicated, steel balls need to be welded, the parts have high precision requirements, high cost, large volume, and double-layer FPC is used, which takes up a lot of space.
  • the ball friction contact system is unstable and difficult to control.
  • the purpose of the present invention is to provide a lens driving device, which can solve the technical problems involved in the background art.
  • the present invention provides a lens driving device, comprising:
  • a swing support mechanism for supporting the movable body to swing around a first axis intersecting the optical axis and swing around a second axis intersecting the optical axis and the first axis;
  • a driving mechanism for driving the movable body to swing around the first axis and around the second axis
  • the swing support mechanism includes:
  • a spacer is located between the fixed body and the movable body, the spacer is provided with a first groove along the first axis, and the spacer is provided with a second groove along the second axis groove;
  • a plurality of cylindrical bearings are installed in the first groove and the second groove respectively, and the swing support mechanism can rotate around the cylindrical bearings, so as to realize the first support that the movable body can cross around the optical axis.
  • the spacer includes a flat main body portion, and the first groove and the second groove are both formed on a surface of the main body portion opposite to the fixed body or the movable body.
  • the elastic member includes an inner ring portion, an outer ring portion, and a connecting portion connecting the outer ring portion and the inner ring portion, and one of the outer ring portion and the inner ring portion is connected to the outer ring portion and the inner ring portion.
  • the fixed body is fixedly connected, the other of the outer ring portion and the inner ring portion is fixedly connected to the movable body, and the spacer is sandwiched between the movable body and the fixed body between the one fixedly connected with the outer ring portion and the elastic member.
  • the main body portion includes an annular ring portion and a first extension portion and a second extension portion connected to the annular ring portion, the first extension portion extends along the first axis direction, and the second extension portion The portion extends along the second axis direction, the first groove is formed in the first extension portion, and the second groove is formed in the second extension portion.
  • the driving mechanism includes two groups of driving modules, each group of driving modules includes a permanent magnet and a driving coil arranged opposite to the permanent magnet, and the two groups of the driving modules are respectively arranged on the lens driving device adjacent sides.
  • the movable body includes a first side wall, an installation groove is formed on the first side wall, and the permanent magnet is fixed in the installation groove.
  • the inner ring portion is in abutment with the annular ring portion.
  • the fixing body includes a second side wall, and an installation through hole corresponding to the installation slot is formed through the second side wall, and the drive coil is accommodated in the installation through hole;
  • the The lens driving device further includes a printed circuit board disposed outside the first side wall, and the driving coil is electrically connected to the printed circuit board.
  • the spacer is provided with a first protrusion protruding toward the fixing body at a position corresponding to the first groove, and the fixing body is provided with a first space at a position corresponding to the first protrusion a groove; the spacer is provided with a second protrusion protruding toward the movable body at the position corresponding to the second groove, and the movable body is provided with a second protrusion at the position corresponding to the second protrusion Give way slot.
  • the number of the cylindrical bearings is four, the numbers of the first grooves and the second grooves are two respectively, and the four cylindrical bearings are respectively installed in the two first grooves and two of the second grooves.
  • the printed circuit board occupies less space
  • the elastic parts can stabilize the movement of the whole system
  • the anti-shock performance of ⁇ 3° in both directions of the first axis and the second axis can be achieved.
  • FIG. 1 is a perspective view of a lens driving device of the present invention
  • FIG. 2 is an exploded perspective view of the lens driving device of the present invention
  • FIG. 3 is a perspective view of the lens driving device of the present invention with the upper casing removed;
  • FIG. 4 is a perspective view of the lens driving device of the present invention with the upper casing and the fixed body removed;
  • FIG. 5 is a perspective view of the lens driving device of the present invention with the upper casing, the fixing body and the printed circuit board removed;
  • FIG. 6 is an exploded perspective view of the fixed body, the spacer, the cylindrical bearing, the elastic member and the movable body of the present invention.
  • the present invention provides a lens driving device, including a protective cover 1 , a fixed body 2 , a movable body 3 , a swing support mechanism 4 , a driving mechanism 5 and a printed circuit board 6 .
  • the fixed body 2 is accommodated and fixed in the protective cover 1
  • the movable body 3 is used to mount a lens (not shown) and is accommodated in the fixed body 2 and can swing.
  • the swing support mechanism 4 is accommodated in the protective cover 1 and used to elastically support the movable body 3
  • the printed circuit board 6 is accommodated in the protective cover 1 and fixed on the outer peripheral side of the fixed body 2, the drive
  • the mechanism 5 is arranged on the inner surface of the printed circuit board 6 and is electrically connected to the printed circuit board 6 .
  • the protective cover 1 includes a base 11 and an upper casing 12 fixed on the base 11 .
  • the upper casing 12 is provided with a light entrance hole 121 along the optical axis L direction.
  • the swing support mechanism 4 is used to support the movable body 3 to swing around the first axis A intersecting with the optical axis L and around the optical axis L and the first axis A.
  • the second axis B swings.
  • the swing support mechanism 4 includes an elastic member 41, a spacer 42 and a plurality of cylindrical bearings 43, wherein the elastic member 41 is used to provide elastic force and stabilize the system vibration, one end of which is fixed Set on the fixed body 2, one end is fixedly connected with the movable body 3.
  • the elastic member 41 includes an inner ring portion 411, an outer ring portion 412 and a connection between the outer ring portion 412 and the The connecting part 413 of the inner ring part 411 , one of the outer ring part 412 and the inner ring part 411 is fixedly connected to the fixing body 2 , and the outer ring part 412 and the inner ring part 411 are fixedly connected to the fixing body 2 .
  • the other is fixedly connected to the movable body 3 , and the spacer 42 is sandwiched between the movable body 3 and the fixed body 2 fixedly connected to the outer ring portion 412 and the elastic Between the pieces, the movable body 3 can be elastically supported in the fixed body 2 by the elastic piece 41 .
  • the spacer 42 is located between the elastic member 41 and the fixing body 2 , and the spacer 42 is provided along the first axis A.
  • the first groove 44 is provided with a second groove 45 along the second axis B.
  • the first groove 44 and the second groove 45 are V-shaped grooves.
  • the spacer 42 includes a flat main body portion 421
  • the first groove 44 and the second groove 45 are both formed on the main body portion 421 and the fixing body 2 or can be On the opposite surface of the dynamic body 3, specifically, the main body portion 421 includes an annular ring portion 4211, and a first extension portion 4212 and a second extension portion 4213 connected to the annular ring portion 4211.
  • the first extension portion 4212 extending along the direction of the first axis A
  • the second extending portion 4213 extending along the direction of the second axis B
  • the first groove 44 is formed in the first extending portion 4212
  • the second groove 45 is formed on the second extension portion 4213 .
  • the inner ring portion 411 is in contact with the annular ring portion 4211 .
  • the swing support mechanism 4 can rotate around the cylindrical bearing 43 , so as to support the movable body to swing around the first axis A intersecting the optical axis L and the second axis A intersecting around the optical axis L and the first axis A.
  • Axis B swings.
  • a plurality of the cylindrical bearings 43 are installed in the first groove 44 and the second groove 45 respectively, and the central axis of the cylindrical bearing 43 located in the first groove 44 and the The first axis A coincides, the central axis of the cylindrical bearing 43 located in the second groove 45 coincides with the second axis B, and the cylindrical bearing 43 can be located in the first groove 44 and the second axis B respectively.
  • the second groove 45 rotates inside.
  • the drive mechanism 5 is used to drive the movable body 3 to swing around the first axis A and the second axis B.
  • the drive mechanism 5 includes two sets of drive modules 51 , each set of drive modules includes a permanent magnet 511 , a drive coil 512 arranged at a distance from the permanent magnet 511 , and a drive coil 512 attached to the permanent magnet 511 away from the permanent magnet 511 .
  • the magnetic conductor 513 on one side of the driving coil 512 and the two groups of the driving modules 51 are respectively disposed on two adjacent sides of the lens driving device.
  • the movable body 3 includes a first side wall 31, and the first side wall 31 is provided with an installation groove 311, and the magnetic conductor 513 And the permanent magnet 511 is fixed in the installation slot 311 .
  • the fixing body 2 includes a second side wall 21 , and a mounting through hole 211 corresponding to the mounting slot 311 is formed through the second side wall 21 , and the driving coil 512 is accommodated in the mounting through hole 211 .
  • the fixed body 2 only includes two adjacent and connected second side walls 21 , therefore, the fixed body 2 only includes two installation through holes 211 ; the movable body 3 only includes two adjacent and connected first side walls 31 , therefore, two sets of the driving modules 51 are respectively disposed corresponding to the two second side walls 21 and the two first side walls 31 .
  • the number of the cylindrical bearings 43 is four, and the number of the first grooves 44 and the second grooves 45 is two respectively, that is, along the The direction of the first axis A is provided with two first grooves 44, and the two first grooves 44 are respectively provided on opposite sides of the lens;
  • the second grooves 45, the two second grooves 45 are respectively located at opposite ends of the lens, and the four cylindrical bearings 43 are respectively installed in the two first grooves 44 and the two inside the second groove 45 .
  • the spacer 42 is provided with a first protrusion 422 protruding toward the fixing body 2 at the position corresponding to the first groove 44 , and the fixing body 2 is provided with a first protrusion 422 at the position corresponding to the first protrusion 422 .
  • the positions of the two protruding portions 423 are provided with a second escaping slot 30 .
  • first protruding portion 422 is located on the first extending portion 4212
  • second protruding portion 423 is located on the second extending portion 4213 .
  • the printed circuit board occupies less space
  • the elastic parts can stabilize the movement of the whole system
  • the anti-shock performance of ⁇ 3° in both directions of the first axis and the second axis can be achieved.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Adjustment Of Camera Lenses (AREA)
  • Lens Barrels (AREA)

Abstract

一种镜头驱动装置，包括防护罩(1)、固定体(2)、可动体(3)、摆动支撑机构(4)、印刷电路板(6)以及驱动机构(5)，固定体(2)收容并固设于防护罩(1)内，可动体(3)用于装载镜头且收容于固定体(2)内并可摆动，摆动支撑机构(4)收容于防护罩(1)内并用于弹性支撑可动体(3)，印刷电路板(6)收容于防护罩(1)内且固设于固定体(2)的外周侧，驱动机构(5)固设于印刷电路板(6)内侧表面并与印刷电路板(6)电连接。有益效果在于：组装制程简单，零件精度要求低，成本较低；印刷电路板(6)占用空间较少；弹性件(41)可稳定整个系统的运动；可实现在第一轴线(A)和第二轴线(B)两个方向上±3°的防手震效能。

Description

一种镜头驱动装置 技术领域
本发明涉及驱动装置技术领域，尤其涉及一种镜头驱动装置。
 背景技术
随着摄影技术的飞速发展，镜头驱动装置被广泛应用于众多的摄影装置中。将镜头驱动装置应用于各种便携式电子设备，例如移动电话、平板电脑等尤其被消费者所接受。
适用于通常的便携式电子设备的镜头驱动装置的驱动机构一般由线圈和永久磁铁形成，线圈固定于摄像镜头框的外周。当向线圈施加电流时，通过电磁力的作用，线圈使摄像镜头框移动并使摄像镜头框沿着镜头的光轴方向移动，由此能够聚焦。但是，在用户用手拿着电子设备进行摄影时，无法避免由于手抖动而引起的镜头驱动装置的抖动。因此，镜头有时会在与镜头的光轴正交的方向上不断移动。这样，在镜头驱动装置中，无法避免因手抖动造成的影响，导致所拍摄的图像的质量降低。
为了解决上述技术问题，在现有专利中，采用金属双滚珠悬架结构，四角落的滚珠设置在凹槽内，提供呈对角线设置的两轴线的旋转自由度，这种结构虽然可以降低手抖动造成的影响，但是，组装制程复杂，需要焊接钢珠，零件精度要求高，成本高，体积大，且采用双层FPC，占用空间多，另外，滚珠摩擦接触系统不稳定，难以控制。
 技术问题
本发明的目的在于提供一种镜头驱动装置，其可以解决背景技术中涉及的技术问题。
 技术解决方案
为了解决上述技术问题，本发明提供了一种镜头驱动装置，包括：
固定体；
可动体，用于装载镜头并可摆动；
摆动支撑机构，用于支撑所述可动体能够绕与光轴交叉的第一轴线摆动以及绕与所述光轴及所述第一轴线交叉的第二轴线摆动；
驱动机构，用于驱动所述可动体绕所述第一轴线及绕所述第二轴线摆动；
其中，所述摆动支撑机构包括：
弹性件，一端固设于所述固定体，一端与可动体固定连接；
间隔件，位于所述固定体与所述可动体之间，所述间隔件设有沿所述第一轴线的第一凹槽，所述间隔件设有沿所述第二轴线的第二凹槽；
多个圆柱轴承，分别安装于所述第一凹槽和所述第二凹槽内，所述摆动支撑机构能够绕所述圆柱轴承转动，实现支撑所述可动体能够绕光轴交叉的第一轴线摆动以及绕所述光轴及所述第一轴线交叉的第二轴线摆动。
优选的，所述间隔件包括一平板状主体部，所述第一凹槽和所述第二凹槽均形成于所述主体部与所述固定体或可动体相对的表面上。
优选的，所述弹性件包括一内圈部、一外圈部以及连接所述外圈部和所述内圈部的连接部，所述外圈部和所述内圈部中的一者与所述固定体固定连接，所述外圈部和所述内圈部中的另一者与所述可动体固定连接，所述间隔件夹设于所述可动体和所述固定体中与所述外圈部固定连接的一者和所述弹性件之间。
优选的，所述主体部包括一环形圈部以及与环形圈部相接的第一延伸部和第二延伸部，所述第一延伸部沿所述第一轴线方向延伸，所述第二延伸部沿所述第二轴线方向延伸，所述第一凹槽形成于所述第一延伸部，所述第二凹槽形成于所述第二延伸部。
优选的，所述驱动机构包括两组驱动模组，每组驱动模组包括永磁体以及与所述永磁体相对间隔设置的驱动线圈，两组所述驱动模组分别设置于所述镜头驱动装置相邻的两侧边。
优选的，所述可动体包括第一侧壁，所述第一侧壁上设有安装槽，所述永磁体固设于所述安装槽内。
优选的，所述内圈部与所述环形圈部抵接。
优选的，所述固定体包括第二侧壁，所述第二侧壁上贯通设有与所述安装槽对应设置的安装通孔，所述驱动线圈收容于所述安装通孔内；所述镜头驱动装置还包括设置于所述第一侧壁外侧的印刷电路板，所述驱动线圈与所述印刷电路板电连接。
优选的，所述间隔件对应所述第一凹槽的位置设有向所述固定体方向突起的第一突起部，所述固定体对应所述第一突起部的位置设有第一让位槽；所述间隔件对应所述第二凹槽的位置设有向所述可动体方向凸起的第二突起部，所述可动体对应所述第二突起部的位置设有第二让位槽。
优选的，所述圆柱轴承数量为四个，所述第一凹槽和所述第二凹槽的数量分别为两个，四个所述圆柱轴承分别安装于两个所述第一凹槽内和两个所述第二凹槽内。
 有益效果
本发明提供的一种镜头驱动装置的有益效果在于：
1、组装制程简单，零件精度要求低，成本较低；
2、印刷电路板占用空间较少；
3、弹性件可稳定整个系统的运动；
4、可实现在第一轴线和第二轴线两个方向上±3°的防手震效能。
 附图说明
图1是本发明镜头驱动装置的立体图；
图2是本发明镜头驱动装置的立体分解图；
图3是本发明镜头驱动装置去掉上壳体的立体图；
图4是本发明镜头驱动装置去掉上壳体和固定体的立体图；
图5是本发明镜头驱动装置去掉上壳体、固定体以及印刷电路板的立体图；
图6是本发明固定体、间隔件、圆柱轴承、弹性件以及可动体的立体分解图。
 本发明的实施方式
下面结合附图和实施方式对本发明作进一步详细描述。以下实施例用于说明本发明，但不用来限制本发明的范围。
需要说明的是，本发明实施例中所有方向性指示(诸如上、下、左、右、前、后、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。
请参阅图1和2所示，本发明提供了一种镜头驱动装置，包括防护罩1、固定体2、可动体3、摆动支撑机构4、驱动机构5以及印刷电路板6。所述固定体2收容并固设于所述防护罩1内，所述可动体3用于装载镜头（未图示）且收容于所述固定体2内并可摆动，所述摆动支撑机构4收容于所述防护罩1内并用于弹性支撑所述可动体3，所述印刷电路板6收容于所述防护罩1内且固设于所述固定体2的外周侧，所述驱动机构5设于所述印刷电路板6内侧表面并与所述印刷电路板6电连接。
所述防护罩1包括基座11和固设于所述基座11上的上壳体12，所述上壳体12沿光轴L方向设有入光孔121。
再结合图3-5所示，所述摆动支撑机构4用于支撑可动体3绕与光轴L交叉的第一轴线A摆动以及绕与所述光轴L及所述第一轴线A交叉的第二轴线B摆动，具体的，所述摆动支撑机构4包括弹性件41、间隔件42以及多个圆柱轴承43，其中，所述弹性件41用于提供弹力并稳定系统振动，其一端固设于所述固定体2，一端与所述可动体3固定连接，具体的，所述弹性件41包括一内圈部411、一外圈部412以及连接所述外圈部412和所述内圈部411的连接部413，所述外圈部412和所述内圈部411中的一者与所述固定体2固定连接，所述外圈部412和所述内圈部411中的另一者与所述可动体3固定连接，所述间隔件42夹设于所述可动体3和所述固定体2中与所述外圈部412固定连接的一者和所述弹性件之间，通过所述弹性件41可以将所述可动体3弹性支撑于所述固定体2内。
在一实施方式中，请具体参阅图1和6所示，所述间隔件42位于所述弹性件41与所述固定体2之间，所述间隔件42沿所述第一轴线A设有第一凹槽44，沿所述第二轴线B设有第二凹槽45，具体的，所述第一凹槽44和所述第二凹槽45为V形槽。
需要进一步说明的是，所述间隔件42包括一平板状主体部421，所述第一凹槽44和所述第二凹槽45均形成于所述主体部421与所述固定体2或可动体3相对的表面上，具体的，所述主体部421包括一环形圈部4211以及与环形圈部4211相接的第一延伸部4212和第二延伸部4213，所述第一延伸部4212沿所述第一轴线A方向延伸，所述第二延伸部4213沿所述第二轴线B方向延伸，所述第一凹槽44形成于所述第一延伸部4212，所述第二凹槽45形成于所述第二延伸部4213。所述内圈部411与所述环形圈部4211抵接。
所述摆动支撑机构4能够绕所述圆柱轴承43转动，实现支撑可动体能够绕光轴L交叉的第一轴线A摆动以及绕所述光轴L及所述第一轴线A交叉的第二轴线B摆动。具体的，多个所述圆柱轴承43分别安装于所述第一凹槽44和所述第二凹槽45内，位于所述第一凹槽44内的所述圆柱轴承43的中心轴线与所述第一轴线A重合，位于所述第二凹槽45内的所述圆柱轴承43的中心轴线与所述第二轴线B重合，所述圆柱轴承43分别能够在所述第一凹槽44和所述第二凹槽45内转动。
所述驱动机构5用于驱动所述可动体3绕所述第一轴线A及绕所述第二轴线B摆动。具体的，所述驱动机构5包括两组驱动模组51，每组驱动模组包括永磁体511、与所述永磁体511相对间隔设置的驱动线圈512以及贴附于所述永磁体511远离所述驱动线圈512的一侧的导磁体513，两组所述驱动模组51分别设置于所述镜头驱动装置相邻的两侧边。
为了便于安装所述驱动机构5，在本发明的具体实施方式中，所述可动体3包括第一侧壁31，所述第一侧壁31上设有安装槽311，所述导磁体513和所述永磁体511固设于所述安装槽311内。所述固定体2包括第二侧壁21，所述第二侧壁21上贯通设有与所述安装槽311对应设置的安装通孔211，所述驱动线圈512收容于所述安装通孔211内。
需要进一步说明的是，所述固定体2只包括两相邻并连接的所述第二侧壁21，因此，所述固定体2只包括两个所述安装通孔211；所述可动体3只包括两相邻并连接的所述第一侧壁31，因此，两组所述驱动模组51分别对应两所述第二侧壁21和两所述第一侧壁31设置。
再进一步结合图2和6所示，所述圆柱轴承43数量具体为四个，所述第一凹槽44和所述第二凹槽45的数量分别为两个，也就是说，沿所述第一轴线A的方向设置有两个所述第一凹槽44，两个所述第一凹槽44分设于镜头的相对两侧；沿所述第二轴线B的方向设置有两个所述第二凹槽45，两个所述第二凹槽45分设于所述镜头的相对两端，四个所述圆柱轴承43分别安装于两个所述第一凹槽44内和两个所述第二凹槽45内。
所述间隔件42对应所述第一凹槽44的位置设有向所述固定体2方向突起的第一突起部422，所述固定体2对应所述第一突起部422的位置设有第一让位槽20；所述间隔件42对应所述第二凹槽45的位置设有向所述可动体3方向凸起的第二突起部423，所述可动体3对应所述第二突起部423的位置设有第二让位槽30，通过设置所述第一让位槽20和所述第二让位槽30，可以增加镜头在光轴L方向上的可移动空间。
需要进一步说明的是，所述第一突起部422位于所述第一延伸部4212上，所述第二突起部423位于所述第二延伸部4213上。
本发明提供的一种镜头驱动装置的有益效果在于：
1、组装制程简单，零件精度要求低，成本较低；
2、印刷电路板占用空间较少；
3、弹性件可稳定整个系统的运动；
4、可实现在第一轴线和第二轴线两个方向上±3°的防手震效能。
以上所述的仅是本发明的较佳实施方式，在此应当指出，对于本领域的普通技术人员来说，在不脱离本发明创造构思的前提下，还可以做出改进，但这些均属于本发明的保护范围。

Claims (10)

  1. 一种镜头驱动装置，其特征在于，包括：
    固定体；
    可动体，用于装载镜头并可摆动；
    摆动支撑机构，用于支撑所述可动体能够绕与光轴交叉的第一轴线摆动以及绕与所述光轴及所述第一轴线交叉的第二轴线摆动；
    以及
    驱动机构，用于驱动所述可动体绕所述第一轴线及绕所述第二轴线摆动；
    其中，所述摆动支撑机构包括：
    弹性件，一端固设于所述固定体，一端与可动体固定连接；
    间隔件，位于所述固定体和所述可动体之间，所述间隔件沿所述第一轴线设有第一凹槽，沿所述第二轴线设有第二凹槽；
    多个圆柱轴承，分别安装于所述第一凹槽和所述第二凹槽内，所述间隔件及所述可动体能够绕所述圆柱轴承转动，实现绕与光轴交叉的第一轴线摆动以及绕与所述光轴及所述第一轴线交叉的第二轴线摆动。
  2. 根据权利要求1所述的一种镜头驱动装置，其特征在于，所述间隔件包括一平板状主体部，所述第一凹槽和所述第二凹槽均形成于所述主体部与所述固定体或可动体相对的表面上。
  3. 根据权利要求2所述的一种镜头驱动装置，其特征在于，所述弹性件包括一内圈部、一外圈部以及连接所述外圈部和所述内圈部的连接部，所述外圈部和所述内圈部中的一者与所述固定体固定连接，所述外圈部和所述内圈部中的另一者与所述可动体固定连接，所述间隔件夹设于所述可动体和所述固定体中与所述外圈部固定连接的一者和所述弹性件之间。
  4. 根据权利要求3所述的一种镜头驱动装置，其特征在于，所述主体部包括一环形圈部以及与环形圈部相接的第一延伸部和第二延伸部，所述第一延伸部沿所述第一轴线方向延伸，所述第二延伸部沿所述第二轴线方向延伸，所述第一凹槽形成于所述第一延伸部，所述第二凹槽形成于所述第二延伸部。
  5. 根据权利要求1所述的一种镜头驱动装置，其特征在于，所述驱动机构包括两组驱动模组，每组驱动模组包括永磁体以及与所述永磁体相对间隔设置的驱动线圈，两组所述驱动模组分别设置于所述镜头驱动装置相邻的两侧边。
  6. 根据权利要求5所述的一种镜头驱动装置，其特征在于，所述可动体包括第一侧壁，所述第一侧壁上设有安装槽，所述永磁体固设于所述安装槽内。
  7. 根据权利要求4所述的一种镜头驱动装置，其特征在于，所述内圈部与所述环形圈部抵接。
  8. 根据权利要求6所述的一种镜头驱动装置，其特征在于，所述固定体包括第二侧壁，所述第二侧壁上贯通设有与所述安装槽对应设置的安装通孔，所述驱动线圈收容于所述安装通孔内；所述镜头驱动装置还包括设置于所述第一侧壁外侧的印刷电路板，所述驱动线圈与所述印刷电路板电连接。
  9. 根据权利要求2所述的一种镜头驱动装置，其特征在于，所述间隔件对应所述第一凹槽的位置设有向所述固定体方向突起的第一突起部，所述固定体对应所述第一突起部的位置设有第一让位槽；所述间隔件对应所述第二凹槽的位置设有向所述可动体方向凸起的第二突起部，所述可动体对应所述第二突起部的位置设有第二让位槽。
  10. 根据权利要求1所述的一种镜头驱动装置，其特征在于，所述圆柱轴承数量为四个，所述第一凹槽和所述第二凹槽的数量分别为两个，四个所述圆柱轴承分别安装于两个所述第一凹槽内和两个所述第二凹槽内。
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