WO2021134332A1 - 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
WO2021134332A1
WO2021134332A1 PCT/CN2019/130162 CN2019130162W WO2021134332A1 WO 2021134332 A1 WO2021134332 A1 WO 2021134332A1 CN 2019130162 W CN2019130162 W CN 2019130162W WO 2021134332 A1 WO2021134332 A1 WO 2021134332A1
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WO
WIPO (PCT)
Prior art keywords
bracket
lens
base
driving device
support
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Application number
PCT/CN2019/130162
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English (en)
French (fr)
Inventor
顾春欣
曹广凯
Original Assignee
诚瑞光学(常州)股份有限公司
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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
Priority to PCT/CN2019/130162 priority Critical patent/WO2021134332A1/zh
Publication of WO2021134332A1 publication Critical patent/WO2021134332A1/zh

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    • 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
    • G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
    • G03B13/32—Means for focusing
    • G03B13/34—Power focusing
    • G03B13/36—Autofocus systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof

Definitions

  • the present invention relates to the field of lens technology, in particular to a lens driving device.
  • the object of the present invention is to provide a lens driving device to solve the problem of poor supporting effect in the prior lens driving device that the lens barrel holder, the ball holder, and the housing are connected by coils and shrapnel or a single ball.
  • a lens driving device for driving the movement of the lens includes a base and a bracket assembly installed in the base, the bracket assembly includes a first bracket and a support for the first bracket A second bracket of a bracket, the first bracket is used to mount the lens;
  • the lens driving device further includes a driving assembly that drives the bracket assembly to move relative to the base along the optical axis of the lens or drives the first bracket relative to the second bracket to move perpendicularly to the The direction of the optical axis of the lens moves;
  • the lens driving device further includes a first support member that supports the movement of the first bracket relative to the second bracket, and a second support member that supports the movement of the bracket assembly relative to the base.
  • the optical axis of the lens has rigidity
  • the first support has elasticity in a direction perpendicular to the optical axis of the lens
  • the second support is spherical.
  • the second bracket includes a base and a first side frame perpendicular to the base, and a side of the first side frame facing the base is provided with an extension extending along the optical axis of the lens.
  • the base is provided with a second track groove that matches with the first track groove, and the second support is installed between the first track groove and the second track groove.
  • both the first track groove and the second track groove include a first groove surface and a second groove surface spaced apart, and the first groove surface and the second groove surface are not parallel.
  • the first support member is a plurality of suspension wires distributed in the circumferential direction of the bracket assembly, one end of the suspension wire is fixed to the second bracket, and the other end is fixed to the first bracket.
  • the first bracket includes a body and a first fixing piece embedded on the top of the body
  • the second bracket includes a second fixing piece opposite to the first fixing piece
  • the suspension wire Both ends of the spool are respectively connected to the first fixing piece and the second fixing piece, and the main body is provided with an escape groove for avoiding the suspension wire.
  • the lens drive device further includes a first drive assembly that drives the bracket assembly to move relative to the base, and a second drive assembly and a third drive that drive the first bracket to move relative to the second bracket.
  • Components, the first driving component, the second driving component, and the third driving component are distributed on three of the peripheral sides of the lens driving device, and the second driving component and the third driving component Distributed on adjacent sides.
  • the first drive assembly includes a first magnetic sheet fixed to the first side frame of the second bracket, a first magnetic steel, and a first coil and a second coil fixed to the base.
  • a magnetic conductive sheet, the first coil and the first magnetic steel are spaced apart and opposed; the first side frame includes an opening, the first magnetic conductive sheet covers the opening, and the first magnetic steel is fixed to The first magnetic steel.
  • the first magnetic steel includes a first magnetic steel piece and a second magnetic steel piece stacked along the optical axis direction of the lens, the first magnetic steel piece and the second magnetic steel piece
  • the magnetizing direction of is perpendicular to the first side frame, and the magnetizing directions of the first magnetic steel piece and the second magnetic steel piece are opposite.
  • the second drive assembly and the third drive assembly both include a third magnetic conductive sheet fixed to a side wall of the first bracket, a second magnetic steel, and a second magnetic steel fixed to the base.
  • the lens driving device further includes a circuit board fixed on the peripheral side of the base, and the first coil and the two second coils are respectively disposed on the circuit board facing the base.
  • the first magnetic conductive sheet is arranged on the side of the circuit board facing away from the base, and the base is provided with an escape port for avoiding the first coil and the two second coils.
  • the beneficial effects of the present invention are that the structure of the lens driving device is simple and the movement is stable.
  • FIG. 1 is a three-dimensional structural diagram of a lens driving device and a lens provided by an embodiment of the present invention
  • Figure 2 is a schematic diagram of the exploded structure of Figure 1;
  • Fig. 3 is a schematic diagram of another exploded structure of Fig. 1;
  • Fig. 4 is an enlarged schematic diagram of A in Fig. 3;
  • Figure 5 is a schematic diagram of the specific structure of the bracket assembly and the first support
  • Figure 6 is a cross-sectional view taken along line A-A in Figure 1;
  • FIG. 7 is a schematic diagram of the magnetizing direction of the second magnet in the lens driving device provided by an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of the magnetizing direction of the first magnet in the lens driving device provided by an embodiment of the present invention.
  • an embodiment of the present invention provides a lens driving device
  • the lens driving device includes a housing 10 and a bracket assembly 20 housed in the housing 10, the bracket assembly 20 It includes a first bracket 21 and a second bracket 22 supporting the first bracket 21, and the first bracket 21 is used for mounting the lens 40.
  • the lens driving device further includes a driving assembly 50 that can drive the bracket assembly 20 to move relative to the housing 10 along the optical axis of the lens 40 or drive the first bracket 21 to move relative to the lens 40
  • the second bracket 22 moves in a direction perpendicular to the optical axis of the lens 40.
  • the lens driving device further includes a first support 31 that supports the movement of the first support 21 relative to the second support 22 and a second support 32 that supports the movement of the support assembly 20 relative to the housing 10.
  • the housing 10 includes a base 12 and a cover 11, the base 12 has a receiving cavity 124, the opening direction of the base 12 and the cover 11 are opposite, and the cover 11 is sleeved outside the base 12.
  • the base 12 can limit the displacement of one end of the bracket assembly 20 along the optical axis direction of the lens 40, and the cover body 11 can limit the displacement of the other end of the bracket assembly 20 along the optical axis direction of the lens 40.
  • the first bracket 21 is disposed in the second bracket 22, the second bracket 22 is received in the receiving cavity 124, and the second bracket 22 is slidably connected to the base 12.
  • the first support 31 has rigidity along the optical axis direction of the lens 40, and the first support 31 has elasticity along the direction perpendicular to the optical axis of the lens 40; preferably, the plurality of first supports 31 is connected between the first bracket 21 and the second bracket 22 for forming a gap between the first bracket 21 and the second bracket 22 along the optical axis direction of the lens 40; more Preferably, the first support member 31 is a plurality of suspension wires distributed in the circumferential direction of the bracket assembly 20, one end of the suspension wire is fixed to the second bracket 22, and the other end is fixed to the first bracket.
  • the plurality of first support members 31 are deformed to form a force between the first bracket 21 and the second bracket 22; the force is used when the driving force of the driving assembly 50 disappears, The first bracket 21 is driven to be reset relative to the second bracket 22 along the direction perpendicular to the optical axis of the lens 40.
  • the plurality of first supports 31 can not only support the first support 21 stably when it is not deformed, but also ensure the tilting performance after deformation, so as to support the first support 21 stably.
  • the material of the plurality of suspension wires can be, but is not limited to, shape memory alloy wires.
  • the first bracket 21 includes a main body 211 and a first fixing piece 215 embedded on the top of the main body 211.
  • the main body 211 is provided with an escape groove 214 for avoiding a plurality of suspended wires.
  • the first fixing piece 215 includes a main body 215a embedded on the top of the main body 211 and an extension 215b located in the avoiding groove 214; the upper surface of the first fixing piece 215 is located at the Below the upper surface of the main body 211; and a number of the suspension wires are fixedly connected to the extension portion 215b of the first fixing piece 215.
  • the second support 22 includes a base 224 and a first side frame 223 extending vertically upward from the periphery of the base 224 (that is, in a direction close to the first support 21), and is opposite to the first side frame 223 and The spaced second side frame 225 and the third side frame 227 adjacent to the first side frame 223; the first side frame 223, the second side frame 225 and the third side frame 227 are also used to restrict the first side frame The displacement of the bracket 21.
  • the second bracket 22 further includes a second fixing piece 222 opposite to the first fixing piece 23. Specifically, the second fixing piece 222 is disposed on a side of the base 224 close to the first bracket 21. On the other hand, the other ends of the plurality of suspension wires are respectively fixedly connected with the circumference of the second fixing piece 222.
  • the base 12 includes a bottom plate, and a first side plate 123, a second side plate 125, and a third side plate 126 perpendicularly connected to the bottom plate.
  • the first side plate 123, the second side plate 125 and the third side plate 126 are distributed on three of the four sides of the bottom plate, and the second side plate 125 is parallel to the first side plate 123.
  • the bracket assembly 20 is installed in the base 12, the first side frame 223 is opposite to the first side plate 123, the second side frame 225 is opposite to the second side plate 125, and the third side frame 227 is opposite to the third side plate 126.
  • the first side frame 223 is provided with a first rail groove 221 extending along the optical axis direction of the lens 40 toward the side of the first side plate 123, and the first side plate 123 is provided with a first rail groove 221 toward the side of the first side frame 223.
  • the first track groove 221 is matched with the second track groove 121.
  • a second supporting member 32 is installed between the first rail groove 221 and the second rail groove 121; the second supporting member 32 is used when relative movement occurs between the second bracket 22 and the base 12 , Ensure that the distance between the second bracket 22 and the base 12 remains unchanged, and reduce the friction between the second bracket 22 and the base 12.
  • the second support 32 is spherical.
  • the first track groove 221 and the second track groove 121 each include a first groove surface P1 and a second groove surface P2 (for details, please refer to FIG. 6), the first groove surface P1 and the second groove surface P1
  • the two groove surfaces P2 are not parallel, and the first groove surface P1 and the second groove surface P2 are approximately arranged in a V shape.
  • a limiting block 122 is provided in the second track groove 121, and a second supporting member 32 is installed on both sides of the limiting block 122, and the limiting block 122 is used to The two second supports 32 are separated.
  • the limiting block 122 may also be provided in the first track groove 221.
  • the driving assembly 50 includes a first driving assembly 51 that drives the bracket assembly 20 to move relative to the base 12, and the first driving assembly 51 includes a first side frame 223 fixed to the second bracket 22
  • the first magnetic conductive sheet 511, the first magnetic steel 512, the first coil 513 and the second magnetic conductive sheet 514 fixed on the first side plate 123 of the base 12, preferably, the first side plate 123
  • a gap 12a is provided for avoiding the first coil 513 and the second magnetic conductive sheet 514, and the first coil 513 is opposed to the first magnetic steel 512 at intervals
  • the first side frame 223 includes an opening 223a, so
  • the first magnetic sheet 511 covers the opening 223a, the first magnetic steel 512 is fixed to the first magnetic sheet 511;
  • the first magnetic steel 512 includes stacks along the optical axis of the lens 40
  • the first magnetic steel piece 512a and the second magnetic steel piece 512b are provided.
  • the magnetization directions of the first magnetic steel piece 512a and the second magnetic steel piece 512b are shown in FIG. 8, and the viewing angle of FIG. 8 is a side view angle (see the angle of view perpendicular to the XZ plane in FIG. 2).
  • the magnetizing direction of the first magnetic steel piece 512a and the second magnetic steel piece 512b is perpendicular to the first side frame 223, and the first magnetic steel piece 512a and the second magnetic steel piece 512b are The direction of magnetization is opposite.
  • the drive assembly 50 also includes the second drive assembly 52 and the third drive assembly 53 that drive the first support 21 to move relative to the second support 22.
  • the second drive assembly 52 includes The third magnetic sheet 523 of the first side wall 212 of the first bracket 21, the second magnetic steel 522, and the second coil 521 fixed on the second side plate 125 of the base 12, the second coil 521 Opposite to the second magnetic steel 522;
  • the third drive assembly 53 includes a third magnetic sheet 523 fixed to the second side wall 216 of the first bracket 21, a second magnetic steel 522 and fixed to the With respect to the second coil 521 on the third side plate 126 of the base 12, the second coil 521 and the second magnetic steel 522 are spaced and opposed to each other.
  • Both the first side wall 212 and the second side wall 216 are provided with a receiving portion 213 for receiving the third magnetic conductive sheet 523 and the second magnetic steel 522.
  • the second side plate 125 and the third side plate 126 are also provided with a notch 12 a for avoiding the second coil 521.
  • the magnetizing directions of the second magnet 522 of the second drive assembly 52 and the third drive assembly 53 are shown in FIG. 7.
  • the viewing angle of FIG. 7 is a top view (see FIG. 2 perpendicular to the XY plane). Viewing angle); the magnetizing direction of the second magnet 522 of the second drive assembly 52 is perpendicular to the first side wall 212, and the magnetizing direction of the second magnet 522 of the third drive assembly 53 is perpendicular On the second side wall 216.
  • the attraction force between the second magnetic conductive sheet 514 and the first magnet 512 is used to drive the second bracket 22 along the light of the lens 40 after the driving force of the driving assembly 50 disappears.
  • the axis direction is reset relative to the base 12.
  • the lens driving device further includes a circuit board 13 fixed to the peripheral side of the base 12, and the first coil 513 and the two second coils 521 are respectively disposed on the circuit board 13 facing the base 12
  • the first magnetic conductive sheet 511 is arranged on the side of the circuit board 13 away from the base 12.
  • an element when an element is referred to as being “fixed on” or “disposed on” another element, the element may be directly on the other element or there may be a centering element at the same time.
  • an element When an element is referred to as being “connected” to another element, it can be directly connected to the other element or an intermediate element may be present at the same time.

Abstract

本发明提供了一种镜头驱动装置，用于驱动镜头运动，所述镜头驱动装置包括底座和安装在所述底座内的支架组件，所述支架组件包括第一支架和支撑所述第一支架的第二支架。本发明的有益效果在于：所述镜头驱动装置还包括支撑所述第一支架相对所述第二支架运动的第一支撑件，以及支撑所述支架组件相对所述底座运动的第二支撑件，所述第一支撑件沿所述镜头的光轴方向具有刚度，所述第一支撑件沿垂直所述镜头的光轴的方向具有弹性，所述第二支撑件为球形；当所述第一支架沿镜头的光轴方向相对于所述第二支架发生位移时，所述若干第一支撑件发生变形、以在所述第一支架和所述第二支架之间形成作用力；从而起到支撑作用，能够保证倾斜性能。

Description

一种镜头驱动装置 技术领域
本发明涉及镜头技术领域，尤其涉及一种镜头驱动装置。
背景技术
现有的镜头驱动装置，为了实现光学防抖和自动对焦功能，机械结构复杂，且光学镜头的移动稳定性差。
因此亟需一种结构简单且移动稳定的镜头驱动装置。
发明概述
技术问题
本发明的目的在于提供一种镜头驱动装置，以解决现有的镜头驱动装置中镜筒支架和滚珠支架及壳体之间通过线圈和弹片或者单滚珠的方式连接，支撑效果较差的问题。
问题的解决方案
技术解决方案
本发明的技术方案如下：一种镜头驱动装置，用于驱动镜头运动，所述镜头驱动装置包括底座和安装在所述底座内的支架组件，所述支架组件包括第一支架和支撑所述第一支架的第二支架，所述第一支架用于安装所述镜头；
所述镜头驱动装置还包括驱动组件，所述驱动组件驱动所述支架组件相对于所述底座沿所述镜头的光轴方向运动或驱动所述第一支架相对于所述第二支架沿垂直于所述镜头的光轴的方向运动；
所述镜头驱动装置还包括支撑所述第一支架相对所述第二支架运动的第一支撑件，以及支撑所述支架组件相对所述底座运动的第二支撑件，所述第一支撑件沿所述镜头的光轴方向具有刚度，所述第一支撑件沿垂直所述镜头的光轴的方向具有弹性，所述第二支撑件为球形。
作为一种改进，所述第二支架包括基座和垂直于所述基座的第一侧框，所述第一侧框朝向所述底座的一侧开设有沿所述镜头的光轴方向延伸的第一轨道槽， 所述底座上开设有与所述第一轨道槽配合的第二轨道槽，所述第二支撑件安装于所述第一轨道槽和所述第二轨道槽之间。
作为一种改进，所述第一轨道槽和所述第二轨道槽均包括相间隔的第一槽面和第二槽面，所述第一槽面和所述第二槽面不平行。
作为一种改进，所述第一支撑件为若干间隔分布于所述支架组件周向的悬丝，所述悬丝的一端固定于所述第二支架，另一端固定于所述第一支架。
作为一种改进，所述第一支架包括本体和嵌设于所述本体顶部的第一固定片，所述第二支架包括与所述第一固定片相对的第二固定片，所述悬丝的两端分别连接于所述第一固定片和所述第二固定片，所述本体上设有避让所述悬丝的避让槽。
作为一种改进，所述镜头驱动装置还包括驱动所述支架组件相对所述底座运动的第一驱动组件和驱动所述第一支架相对所述第二支架运动的第二驱动组件和第三驱动组件，所述第一驱动组件、所述第二驱动组件、所述第三驱动组件分布于所述镜头驱动装置四周侧的其中三侧，且所述第二驱动组件和所述第三驱动组件分布于相邻的两侧。
作为一种改进，所述第一驱动组件包括固定于所述第二支架的所述第一侧框的第一导磁片、第一磁钢和固定于所述底座的第一线圈和第二导磁片，所述第一线圈和所述第一磁钢间隔相对；所述第一侧框包括一开口，所述第一导磁片覆盖于所述开口，所述第一磁钢固定于所述第一磁钢。
作为一种改进，所述第一磁钢包括沿所述镜头的光轴方向叠设的第一磁钢件和第二磁钢件，所述第一磁钢件和所述第二磁钢件的充磁方向垂直于所述第一侧框，且所述第一磁钢件和所述第二磁钢件的充磁方向相反。
作为一种改进，所述第二驱动组件和所述第三驱动组件均包括固定于所述第一支架的一侧壁的第三导磁片、第二磁钢和固定于所述底座的第二线圈，所述第二线圈和所述第二磁钢间隔相对；所述第一支架的侧壁上设有收容所述第三导磁片和所述第二磁钢的收容部。
作为一种改进，所述镜头驱动装置还包括固定于所述底座周侧的电路板，所述第一线圈和所述两个所述第二线圈分别设置于所述电路板朝向所述底座的一侧 ，所述第一导磁片设置于所述电路板背离所述底座的一侧，所述底座开设有避让所述第一线圈及所述两个第二线圈的避让口。
发明的有益效果
有益效果
本发明的有益效果在于：镜头驱动装置的结构简单且移动稳定。
对附图的简要说明
附图说明
图1为本发明一实施例提供的镜头驱动装置与镜头配合的立体结构图；
图2为图1的爆炸结构示意图；
图3为图1的另一爆炸结构示意图；
图4为图3中A的放大示意图；
图5为支架组件和第一支撑件的具体结构示意图；
图6为图1中A-A线的剖视图；
图7为本发明一实施例提供的镜头驱动装置中第二磁钢的充磁方向的示意图；
图8为本发明一实施例提供的镜头驱动装置中第一磁钢的充磁方向的示意图。
发明实施例
具体实施方式
下面结合附图和实施方式对本发明作进一步说明。
请参看图1和图2，本发明的一实施方式提供了一种镜头驱动装置，所述镜头驱动装置包括壳体10和收容于所述壳体10内的支架组件20，所述支架组件20包括第一支架21和支撑所述第一支架21的第二支架22，所述第一支架21用于安装镜头40。所述镜头驱动装置还包括驱动组件50，所述驱动组件50可驱动所述支架组件20相对所述壳体10沿所述镜头40的光轴方向运动或驱动所述第一支架21相对所述第二支架22沿垂直所述镜头40的光轴的方向运动。所述镜头驱动装置还包括支撑所述第一支架21相对所述第二支架22运动的第一支撑件31，以及支撑所述支架组件20相对所述壳体10运动的第二支撑件32。
在本实施例中，所述壳体10包括底座12和罩体11，底座12具有收容腔124，所 述底座12和罩体11开口方向相对、且罩体11套设于底座12外侧。所述底座12能够限制支架组件20沿镜头40光轴方向的一端的位移，所述罩体11能限制支架组件20沿镜头40光轴方向的另一端的位移。
所述第一支架21设置在所述第二支架22内，所述第二支架22收容于所述收容腔124内，所述第二支架22与所述底座12滑动连接。
所述第一支撑件31沿所述镜头40的光轴方向具有刚度，所述第一支撑件31沿垂直所述镜头40的光轴的方向具有弹性；优选地，所述若干第一支撑件31连接在所述第一支架21和所述第二支架22之间，以用于沿所述镜头40光轴方向在所述第一支架21和所述第二支架22之间形成间隔；更为优选地，所述第一支撑件31为若干间隔分布于所述支架组件20周向的悬丝，所述悬丝的一端固定于所述第二支架22，另一端固定于所述第一支架21；当所述第一支架21受到来源于驱动组件50沿垂直所述镜头40的光轴方向的驱动力后，所述第一支架21相对于所述第二支架22发生位移时，所述若干第一支撑件31发生变形、以在所述第一支架21和所述第二支架22之间形成作用力；所述作用力用于在当所述驱动组件50的驱动力消失后、驱动所述第一支架21沿垂直所述镜头40的光轴方向相对于所述第二支架22复位。若干第一支撑件31既能在未发生形变时起到平稳支撑所述第一支架21的作用、又能在发生形变后保证倾斜性能从而起到平稳支撑所述第一支架21的作用。优选地，若干所述悬丝的材质可以是但不限定为形状记忆合金丝。
请参看图3-5，所述第一支架21包括本体211和嵌设于所述本体211顶部的第一固定片215，所述本体211上设有避让若干所述悬丝的避让槽214。应当指出的是，所述第一固定片215包括嵌设于所述本体211顶部的主体215a和位于所述避让槽214的延伸部215b；所述第一固定片215的上表面位于所述所述本体211的上表面之下；且若干所述悬丝与所述第一固定片215的所述延伸部215b固定连接。
所述第二支架22包括基座224和从基座224周围垂直向上(也就是向靠近所述第一支架21的方向)延伸的第一侧框223、与所述第一侧框223相对且间隔的第二侧框225、与所述第一侧框223相邻的第三侧框227；第一侧框223、第二侧框225和第三侧框227还用于限制所述第一支架21的位移。所述第二支架22还包括与所 述第一固定片23相对的第二固定片222，具体地，所述第二固定片222设置在所述基座224靠近所述第一支架21的一侧，若干所述悬丝的另一端分别与所述第二固定片222的周部固定连接。
所述底座12包括一底板以及垂直连接于所述底板的第一侧板123、第二侧板125和第三侧板126。所述第一侧板123、第二侧板125和第三侧板126分布于所述底板四周侧的其中之三侧，且所述第二侧板125与所述第一侧板123平行。支架组件20安装于底座12内时，第一侧框223与第一侧板123相对，第二侧框225与第二侧板125相对，第三侧框227与第三侧板126相对。第一侧框223朝向第一侧板123的一侧开设有沿所述镜头40的光轴方向延伸的第一轨道槽221，第一侧板123朝向第一侧框223的一侧开设有与第一轨道槽221配合的第二轨道槽121。所述第一轨道槽221与所述第二轨道槽121之间安装有第二支撑件32；所述第二支撑件32用于在第二支架22与所述底座12之间发生相对运动时、保证第二支架22与底座12之间的间隔不变，并且减小第二支架22与底座12之间的摩擦力。优选地，所述第二支撑件32为球形。
所述第一轨道槽221和所述第二轨道槽121均包括相间隔的第一槽面P1和第二槽面P2(具体请参看图6)，所述第一槽面P1和所述第二槽面P2不平行，所述第一槽面P1和所述第二槽面P2大致排布成V形。
更为优选地，所述第二轨道槽121内设有一限位块122，所述限位块122的两侧分别安装有一个所述第二支撑件32，所述限位块122用于将两个第二支撑件32分开。当然，需要说明的是，也可在所述第一轨道槽221中设置所述限位块122。
所述驱动组件50包括驱动所述支架组件20相对所述底座12运动的第一驱动组件51，所述第一驱动组件51包括固定于所述第二支架22的所述第一侧框223的第一导磁片511、第一磁钢512和固定于所述底座12的第一侧板123上的第一线圈513和第二导磁片514，优选地，所述第一侧板123上设有避让所述第一线圈513和第二导磁片514的缺口12a，所述第一线圈513与所述第一磁钢512间隔相对；所述第一侧框223包括一开口223a，所述第一导磁片511覆盖于所述开口223a，所述第一磁钢512固定于所述第一导磁片511；所述第一磁钢512包括沿所述镜头40的光轴方向叠设的第一磁钢件512a和第二磁钢件512b。所述第一磁钢件512a和所述第二 磁钢件512b的充磁方向如图8所示，图8的观察视角为侧视视角(参看图2中的垂直于XZ平面的视角)。所述第一磁钢件512a和所述第二磁钢件512b的充磁方向垂直于所述第一侧框223，且所述第一磁钢件512a和所述第二磁钢件512b的充磁方向相反。
所述驱动组件50还包括驱动所述第一支架21相对所述第二支架22运动的所述第二驱动组件52和所述第三驱动组件53，所述第二驱动组件52包括固定于所述第一支架21的第一侧壁212的第三导磁片523、第二磁钢522和固定于所述底座12的第二侧板125上的第二线圈521，所述第二线圈521和所述第二磁钢522间隔相对；所述第三驱动组件53包括固定于所述第一支架21的第二侧壁216的第三导磁片523、第二磁钢522和固定于所述底座12的第三侧板126上的第二线圈521，所述第二线圈521和所述第二磁钢522间隔相对。所述第一侧壁212和第二侧壁216上均设有收容所述第三导磁片523和所述第二磁钢522的收容部213。所述第二侧板125和第三侧板126上也均设有避让所述第二线圈521的缺口12a。
优选地，所述第二驱动组件52与第三驱动组件53的第二磁钢522的充磁方向请参看图7，图7的观察视角为俯视视角(参看图2中的垂直于XY平面的视角)；所述第二驱动组件52的所述第二磁钢522的充磁方向垂直于第一侧壁212，所述第三驱动组件53的所述第二磁钢522的充磁方向垂直于第二侧壁216。
本申请中，第二导磁片514与第一磁钢512之间的吸引力用于在当所述驱动组件50的驱动力消失后、驱动所述第二支架22沿所述镜头40的光轴方向相对于所述底座12复位。
所述镜头驱动装置还包括固定于所述底座12周侧的电路板13，所述第一线圈513和所述两个所述第二线圈521分别设置于所述电路板13朝向所述底座12的一侧，所述第一导磁片511设置于所述电路板13背离所述底座12的一侧。
需要说明的是，本发明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。
以上所述的仅是本发明的实施方式，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，用于驱动镜头运动，其特征在于，所述镜头驱动装置包括底座和安装在所述底座内的支架组件，所述支架组件包括第一支架和支撑所述第一支架的第二支架，所述第一支架用于安装所述镜头；
    所述镜头驱动装置还包括驱动组件，所述驱动组件驱动所述支架组件相对于所述底座沿所述镜头的光轴方向运动或驱动所述第一支架相对于所述第二支架沿垂直于所述镜头的光轴的方向运动；所述镜头驱动装置还包括支撑所述第一支架相对所述第二支架运动的第一支撑件，以及支撑所述支架组件相对所述底座运动的第二支撑件，所述第一支撑件沿所述镜头的光轴方向具有刚度，所述第一支撑件沿垂直所述镜头的光轴的方向具有弹性，所述第二支撑件为球形。
  2. 如权利要求1所述的镜头驱动装置，其特征在于：所述第二支架包括基座和垂直于所述基座的第一侧框，所述第一侧框朝向所述底座的一侧开设有沿所述镜头的光轴方向延伸的第一轨道槽，所述底座上开设有与所述第一轨道槽配合的第二轨道槽，所述第二支撑件安装于所述第一轨道槽和所述第二轨道槽之间。
  3. 如权利要求2所述的镜头驱动装置，其特征在于：所述第一轨道槽和所述第二轨道槽均包括相间隔的第一槽面和第二槽面，所述第一槽面和所述第二槽面不平行。
  4. 如权利要求1所述的镜头驱动装置，其特征在于：所述第一支撑件为若干间隔分布于所述支架组件周向的悬丝，所述悬丝的一端固定于所述第二支架，另一端固定于所述第一支架。
  5. 如权利要求4所述的镜头驱动装置，其特征在于：所述第一支架包括本体和嵌设于所述本体顶部的第一固定片，所述第二支架包括与所述第一固定片相对的第二固定片，所述悬丝的两端分别连接于所述第一固定片和所述第二固定片，所述本体上设有避让所述 悬丝的避让槽。
  6. 如权利要求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驱动所述支架组件相对所述底座运动的第一驱动组件和驱动所述第一支架相对所述第二支架运动的第二驱动组件和第三驱动组件，所述第一驱动组件、所述第二驱动组件、所述第三驱动组件分布于所述镜头驱动装置四周侧的其中三侧，且所述第二驱动组件和所述第三驱动组件分布于相邻的两侧。
  7. 如权利要求6所述的镜头驱动装置，其特征在于：所述第一驱动组件包括固定于所述第二支架的所述第一侧框的第一导磁片、第一磁钢和固定于所述底座的第一线圈和第二导磁片，所述第一线圈和所述第一磁钢间隔相对；所述第一侧框包括一开口，所述第一导磁片覆盖于所述开口，所述第一磁钢固定于所述第一磁钢。
  8. 如权利要求7所述的镜头驱动装置，其特征在于：所述第一磁钢包括沿所述镜头的光轴方向叠设的第一磁钢件和第二磁钢件，所述第一磁钢件和所述第二磁钢件的充磁方向垂直于所述第一侧框，且所述第一磁钢件和所述第二磁钢件的充磁方向相反。
  9. 如权利要求8所述的镜头驱动装置，其特征在于：所述第二驱动组件和所述第三驱动组件均包括固定于所述第一支架的一侧壁的第三导磁片、第二磁钢和固定于所述底座的第二线圈，所述第二线圈和所述第二磁钢间隔相对；所述第一支架的侧壁上设有收容所述第三导磁片和所述第二磁钢的收容部。
  10. 如权利要求9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固定于所述底座周侧的电路板，所述第一线圈和两个所述第二线圈分别设置于所述电路板朝向所述底座的一侧，所述第一导磁片设置于所述电路板背离所述底座的一侧，所述底座开设有避让所述第一线圈及所述第二线圈的避让口。
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CN204925579U (zh) * 2015-07-09 2015-12-30 林小军 微型镜头驱动装置
CN107193105A (zh) * 2017-04-12 2017-09-22 瑞声科技(新加坡)有限公司 镜头驱动装置
CN109031584A (zh) * 2017-06-12 2018-12-18 三星电机株式会社 镜头驱动装置及包括镜头驱动装置的相机模块

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Publication number Priority date Publication date Assignee Title
US7359631B2 (en) * 2004-09-22 2008-04-15 Fujifilm Corporation Lens driving device, imaging device using the same, and small-sized electronics device using the same
CN204925579U (zh) * 2015-07-09 2015-12-30 林小军 微型镜头驱动装置
CN107193105A (zh) * 2017-04-12 2017-09-22 瑞声科技(新加坡)有限公司 镜头驱动装置
CN109031584A (zh) * 2017-06-12 2018-12-18 三星电机株式会社 镜头驱动装置及包括镜头驱动装置的相机模块

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