WO2022099860A1 - 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
WO2022099860A1
WO2022099860A1 PCT/CN2020/137352 CN2020137352W WO2022099860A1 WO 2022099860 A1 WO2022099860 A1 WO 2022099860A1 CN 2020137352 W CN2020137352 W CN 2020137352W WO 2022099860 A1 WO2022099860 A1 WO 2022099860A1
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WO
WIPO (PCT)
Prior art keywords
lens barrel
shake
frame
lens
driving device
Prior art date
Application number
PCT/CN2020/137352
Other languages
English (en)
French (fr)
Inventor
闫锋
韦锁和
李刚
倪天恒
Original Assignee
诚瑞光学(深圳)有限公司
常州市瑞泰光电有限公司
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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 WO2022099860A1 publication Critical patent/WO2022099860A1/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
    • G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
    • G02B7/09—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted for automatic focusing or varying magnification
    • 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
    • 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 utility model belongs to the technical field of photographing equipment, in particular to a lens driving device.
  • the existing lens driving device includes a casing, a frame, a lens assembly, a driving coil, a magnetic steel, a circuit board, an anti-shake coil, a Hall sensor, and the like.
  • the frame and the upper plane of the lens barrel are on the same level, and this design will result in a larger overall structure, high thickness space requirements, and complex structure, which is inconvenient to manufacture.
  • the embodiment of the present invention provides a lens driving device, which aims to solve the problem that the frame and the upper plane of the lens barrel in the existing lens driving device are in the same horizontal plane, which causes the overall structure to be large in volume, high in thickness space requirements, complex in structure, and inconvenient. ease of manufacture.
  • a lens driving device comprising: a base;
  • the shell cover is arranged on the base
  • the lens barrel is used to install the lens group
  • the frame is supported on the base and has a accommodating space, the lens barrel is accommodated in the accommodating space, the inner wall of the frame is provided with a plurality of inwardly protruding protrusions, and the upper plane of the protrusions is Lower than the upper plane of the frame, when the frame accommodates the lens barrel, the horizontal height of the upper plane of the frame is higher than the horizontal height of the upper plane of the lens barrel, and the upper plane of the protruding part is the same as the upper plane of the lens barrel.
  • the upper plane of the lens barrel is in the same horizontal plane;
  • the upper elastic sheet member is provided with a conducting circuit
  • the upper elastic sheet member includes a plurality of upper elastic sheet units corresponding to the number of the protruding parts, and each of the upper elastic sheet units includes an upper plane connected to the frame the first fixing part, the second fixing part connected to the upper plane of one of the protruding parts, the third fixing part connected to the upper plane of the lens barrel, the connecting part of the first fixing part and the second fixing part a first connecting arm, and a second connecting arm connecting the second fixing part and the third fixing part;
  • a driving assembly which is used for driving the lens barrel to move along a direction perpendicular to the optical axis of the lens barrel.
  • each group of the upper elastic sheet units there are four upper elastic sheet units in a group of two, and the two first fixing portions of each group of the upper elastic sheet units are connected by a first connecting portion.
  • the two third fixing portions of each group of the upper elastic sheet units are connected by a second connecting portion.
  • the driving assembly includes a magnetic steel member and a driving coil;
  • the magnetic steel member includes a first driving magnetic steel fixed on opposite sides of the frame and a second driving magnetic steel fixed on the other opposite sides of the frame.
  • the drive coil is sleeved on the outer circumference of the lens barrel and is spaced from the magnetic steel member; the magnetization direction of the magnetic steel member is parallel to the winding plane of the drive coil and drives the drive coil along the The direction of the optical axis of the lens barrel is moved.
  • the lens driving device further includes an anti-shake coil member and a circuit board attached to the base, and the anti-shake coil member includes an anti-shake coil member fixed on the circuit board and connected to the first driving magnetic steel.
  • the lens driving device further includes an anti-shake suspension wire
  • the anti-shake suspension wire includes a plurality of and is arranged around the frame, and two ends of each of the anti-shake suspension wires are respectively connected to the base and the base. the first fixing part.
  • the first fixing portion is provided with an extension portion extending outward, and one end of the anti-shake suspension wire is connected to the first fixing portion through the extension portion.
  • the lens driving device further includes a lower elastic member that cooperates with an upper elastic member to support the lens barrel in the frame
  • the lower elastic member includes a plurality of lower elastic units, each of which is a lower elastic member. It comprises a fourth fixing part connected to the lower plane of the frame, a fifth fixing part connected to the lower plane of the lens barrel, and a third connecting arm connecting the fourth fixing part and the fifth fixing part.
  • the frame is provided with a plurality of first connecting posts, and the upper elastic sheet member and the lower elastic sheet member are connected to the frame through the first connecting posts.
  • the lens barrel is provided with a plurality of second connecting columns, and the upper elastic sheet member and the lower elastic sheet member are connected to the lens barrel through the second connecting columns.
  • the frame is provided with a limit groove
  • the lens barrel is provided with a limit bump corresponding to the limit groove
  • the limit bump is arranged in the limit groove at intervals.
  • the first fixing portion is provided with a stop portion for restricting the movement of the lens barrel along the optical axis direction corresponding to the position of the limiting groove.
  • one of the first anti-shake coils and one of the second anti-shake coils respectively include two anti-shake sub-coils, and the two anti-shake sub-coils in the first anti-shake coil are arranged at intervals, The two anti-shake sub-coils in the second anti-shake coil are arranged at intervals.
  • the lens driving device further includes two Hall sensors, one of which is arranged between the two anti-shake sub-coils in the first anti-shake coil and is used to detect the mirror.
  • the displacement of the lens barrel in the first direction, and the other Hall sensor is arranged between the two anti-shake sub-coils in the second anti-shake coil and is used to detect the position of the lens barrel in the first anti-shake coil. displacement in two directions.
  • a protruding part is arranged on the frame, so that the frame forms a two-section structure, and the upper plane of the protruding part is also in the same horizontal plane as the upper plane of the lens barrel.
  • the utility model also makes the level of the upper surface of the lens barrel lower than the level of the upper surface of the frame, thereby realizing the space compression of the overall structure, reducing the thickness space requirement, and the structure is simple and convenient. manufacturing.
  • FIG. 1 is a schematic exploded view of the structure of a lens driving device provided by an embodiment of the present invention.
  • FIG. 2 is a schematic diagram of the overall structure of a lens driving device provided by an embodiment of the present invention.
  • FIG. 3 is a cross-sectional view taken along line A-A in FIG. 2 .
  • FIG. 4 is an enlarged schematic view of the frame selection part in FIG. 3 .
  • FIG. 5 is a schematic structural diagram of a lens driving device provided by an embodiment of the present invention with the upper cover removed.
  • FIG. 6 is an enlarged schematic view of the frame selection part in FIG. 5 .
  • FIG. 7 is a first schematic diagram of a lens driving device provided by an embodiment of the present invention with a part of the structure removed.
  • FIG. 8 is a second schematic diagram of a lens driving device provided by an embodiment of the present invention with a part of the structure removed.
  • FIG. 9 is a schematic diagram of a bottom plate, a circuit board, and a structure on the circuit board in a lens driving device provided by an embodiment of the present invention.
  • An embodiment of the present utility model provides a lens driving device, as shown in FIG. 1 , comprising: a base 1, a housing 12, a lens barrel 6, a frame 9, an upper spring member, a driving assembly, a lower spring member, and an anti-shake suspension wire 8.
  • the casing 12 is covered on the base 1 .
  • the lens barrel 6 is used to mount the lens group.
  • the frame 9 is supported on the base 1 and is located in the housing 12 , the frame 9 has an accommodation space 91 , and the lens barrel 6 is accommodated in the accommodation space 91 .
  • the inner wall of the frame 9 is provided with a plurality of inwardly protruding protrusions 1110 .
  • the upper plane of the protrusions 1110 is lower than the upper plane of the frame 9 .
  • the level of the upper plane of the frame 9 is higher At the level of the upper plane of the lens barrel 6 , the upper plane of the protrusion 1110 and the upper plane of the lens barrel 6 are at the same level.
  • protrusions 1110 are provided at intervals on the inner wall of the frame 9 .
  • the number of the protrusions 1110 can be changed according to actual needs, for example, three, five, six, etc. can be changed.
  • the frame 9 has a square structure, and at this time, the four protrusions 1110 are respectively arranged at the four corners of the frame 9 .
  • the frame 9 is provided with a limiting groove 1111
  • the lens barrel 6 is provided with a limiting convex block 62 corresponding to the limiting groove 1111 , wherein the limiting convex
  • the blocks 62 are arranged in the limiting grooves 1111 at intervals to limit the rotation of the lens barrel 6 .
  • the limiting grooves 1111 there are four limiting grooves 1111 on the frame 9 , which are respectively arranged on the four corners of the frame 9 .
  • the limiting bumps 62 on the lens barrel 6 The same number is also four.
  • the number of the limiting grooves 1111 may also be two, three, five, and so on.
  • the upper elastic sheet member includes a plurality of upper elastic sheet units 11 corresponding to the number of the protruding portions 1110 , and each upper elastic sheet unit 11 includes a first fixing portion connected to the upper plane of the frame 9 . 111.
  • the second fixing portion 112 connected to the protruding portion 1110, the third fixing portion 113 connected to the upper plane of the lens barrel 6, the first connecting arm 114 connecting the first fixing portion 111 and the second fixing portion 112, and the The second connecting arm 115 of the second fixing portion 112 and the third fixing portion 113 .
  • FIG. 5 there are four upper elastic sheet units 11 in a group of two, and the two first fixing portions 111 of each group of upper elastic sheet units 11 are connected by a first connecting portion 116 .
  • the two third fixing portions 113 of each set of upper elastic sheet units 11 are connected by a second connecting portion 117 .
  • the two groups of upper elastic sheet units 11 are insulated from each other, and each group forms a conducting circuit for realizing the transmission of positive and negative poles of electrical signals.
  • a position of the first fixing portion 111 corresponding to the limit groove 1111 is provided with a stop portion 119 for restricting the movement of the lens barrel 6 along the optical axis direction, and the stop portion 119 is located in the limit concave
  • the upper part of the groove 1111 is used to limit the distance of the movement of the lens barrel 6 along the optical axis.
  • the lower elastic member is used to connect the frame 9 and the lower plane of the lens barrel 6, and the lower elastic member cooperates with the upper elastic member to elastically support the lens barrel 6 in the frame 9, so as to provide automatic The restoring force to the lens barrel 6 during the focusing function.
  • the lower elastic piece member includes a plurality of lower elastic piece units 5 , and each lower elastic piece unit 5 includes a fourth fixing portion 51 connected to the lower plane of the frame 9 , and a fourth fixed portion 51 connected to the lower plane of the lens barrel 6 .
  • lower elastic sheet units 5 which are respectively connected to the four corners of the frame 9 .
  • the number of lower shrapnel units 5 may also be three, five, six, etc., according to actual requirements.
  • the frame 9 is provided with a plurality of first connecting columns 92 , and the first fixing portion 111 in the upper elastic piece member is connected to the frame 9 through the first connecting column 92 , and the upper elastic piece
  • the second fixing part 112 in the component is also connected with the protruding part 1110 through the first connecting column 92
  • the fourth fixing part 51 in the lower elastic member is also connected with the frame 9 through the first connecting column 92 , wherein the first connection
  • the structural part where the column 92 is connected with the frame 9 is provided with perforations, so as to pass through the first connecting column 92 and connect with the frame 9 .
  • the number of the first connecting posts 92 on the frame 9 is set according to actual requirements.
  • the lens barrel 6 is provided with a plurality of second connecting columns 61 , and the third fixing portion 113 in the upper elastic member is connected to the lens barrel 6 through the second connecting columns 61 ,
  • the fifth fixing portion 53 in the lower elastic member is also connected to the lens barrel 6 through the second connecting column 61 .
  • the number of the second connecting columns 61 on the lens barrel 6 is set according to actual requirements.
  • the anti-shake suspension wire 8 is made of metal conductive material, includes a plurality of wires and is arranged around the frame 9 , and the two ends of each anti-shake suspension wire 8 are respectively connected to the base 1 with the first fixing part 111 .
  • the first fixing portion 111 of the upper elastic sheet unit 11 is provided with an extension portion 118 extending outward, and one end of the anti-shake suspension wire 8 is connected to the first fixing portion 111 through the extension portion 118 .
  • one end of the anti-shake suspension wire 8 is connected to the extension portion 118 so as to be indirectly connected to the upper elastic sheet member and form an electrical connection.
  • the circuit board 2 is a flexible circuit board 2 , which is attached to the base 1 and is spaced from the frame 9 .
  • the circuit board 2 is electrically connected to the upper elastic member through the anti-shake suspension wire 8 . sexual connection.
  • the magnetic steel member 10 includes: a first driving magnetic steel 101 fixed on opposite sides of the frame 9 , and a second driving magnetic steel fixed on the other opposite sides of the frame 9 .
  • Steel 102 a first driving magnetic steel 101 fixed on opposite sides of the frame 9 .
  • first driving magnetic steels 101 which are respectively arranged on opposite sides of the frame 9
  • second driving magnetic steels 102 which are respectively arranged on the opposite sides of the frame 9 . on the other opposite sides of the frame 9 .
  • the driving coil 7 is sleeved on the outer circumference of the lens barrel 6 and is spaced from the magnetic steel member 10 , and the magnetization direction of each magnetic steel in the magnetic steel member 10 is the same as that of the driving coil 7 .
  • the winding planes are parallel.
  • the magnetic steel member 10 is used to drive the drive coil 7 to move along the optical axis direction of the lens barrel 6 .
  • the drive coil 7 drives the lens barrel 6 to move along the optical axis direction to realize the automatic focusing function.
  • the magnetization direction of each magnetic steel in the magnetic steel member 10 can also be set to be perpendicular to the optical axis direction of the lens barrel 6 .
  • the upper elastic member is provided with a conducting circuit
  • the anti-shake suspension wire has conductivity
  • the driving coil 7 is electrically connected to the circuit board 2 through the upper elastic member and the anti-shake suspension wire 8 in turn, so as to be used for transmission to realize driving. function signal.
  • the anti-shake coil member 4 includes: a first anti-shake coil fixed on the circuit board 2 and opposite to the first driving magnetic steel 101 at intervals
  • the first anti-shake coil 41 is located within the magnetic field range of the first driving magnetic steel 101 and drives the first driving magnetic steel 101 to move in a first direction perpendicular to the optical axis of the lens barrel 6
  • the second anti-shake coil 42 is located in the first
  • the second driving magnetic steel 102 is driven to move in a second direction perpendicular to the optical axis direction of the lens barrel 6 within the magnetic field range of the two driving magnetic steels 102 .
  • the second direction is perpendicular to the first direction.
  • the anti-shake coil member 4 is also electrically connected to the circuit board 2 for transmitting a signal for realizing the anti-shake function.
  • the Hall sensor 3 is fixed on the circuit board 2 for detecting the displacement of the lens barrel 6 in the first direction and the second direction.
  • Hall sensors 3 which are respectively disposed on adjacent two sides of the circuit board 2 to detect the displacement of the lens barrel 6 in the first direction and the second direction.
  • a first anti-shake coil 41 and a second anti-shake coil 42 respectively include two anti-shake sub-coils 411 , and two anti-shake sub-coils in the first anti-shake coil 41 411 are arranged at intervals, and the two anti-shake sub-coils 411 in the second anti-shake coil 42 are arranged at intervals.
  • one Hall sensor 3 is arranged between the two anti-shake sub-coils 411 in the first anti-shake coil 41 to detect the displacement of the lens barrel 6 in the first direction, and the other Hall sensor 3 is arranged in Between the two anti-shake sub-coils 411 in the second anti-shake coil 42 is used for detecting the displacement of the lens barrel 6 in the second direction.
  • the present invention makes the frame 9 form a two-stage structure by arranging the protruding portion 1110 on the frame 9, and the upper plane of the protruding portion 1110 is also in the same horizontal plane as the upper plane of the lens barrel 6, and then combined.
  • the design of the upper shrapnel member enables the present utility model to make the level of the upper surface of the lens barrel 6 lower than the level of the upper surface of the frame 9 under the action of driving the lens, thereby realizing the space compression of the overall structure and reducing the The thickness and space requirements are met, and the structure is simple, which is convenient for production and manufacture.

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

Abstract

本实用新型实施例适用于拍摄设备技术领域，提供了一种镜头驱动装置，包括：底座；外壳；镜筒；框架，所述框架支撑于所述底座并具有收容所述镜筒的收容空间，所述框架的内壁设置有多个向内突出的突出部，所述突出部的上平面低于所述框架的上平面；上弹片构件，所述上弹片构件包括与所述突出部数量对应的多个上弹片单元；驱动组件。本实用新型实施例在实现驱动镜头的作用下，还使镜筒上表面的水平高度低于框架上表面的水平高度，进而实现了整体结构的空间压缩，减小了厚度空间需求，且结构简单，便于生产制造。

Description

一种镜头驱动装置 技术领域
本实用新型属于拍摄设备技术领域，尤其涉及一种镜头驱动装置。
 背景技术
随着生活水平的提高，数码相机、数码摄像机、智能手机、平板电脑等一些具有拍摄功能的设备已均具备自动对焦摄像头，而自动对焦摄像头需要镜头驱动装置进行驱动，以实现自动调焦及光学防抖。
现有的镜头驱动装置包括外壳、框架、镜头组件、驱动线圈、磁钢、线路板、防抖线圈、霍尔传感器等。其中，框架与镜筒的上平面是处于同一水平面的，而这种设计会造成整体结构的体积较大，厚度空间需求高，且结构复杂，不便于制造。
 技术问题
本实用新型实施例提供一种镜头驱动装置，旨在解决现有的镜头驱动装置中框架与镜筒的上平面处于同一水平面而造成整体结构的体积大，厚度空间需求高，且结构复杂，不便于制造的问题。
 技术解决方案
本实用新型实施例是这样实现的，提供了一种镜头驱动装置，包括：底座；
外壳，所述外壳盖设于所述底座上；
镜筒，所述镜筒用于安装镜片组；
框架，所述框架支撑于所述底座并具有收容空间，所述镜筒收容于所述收容空间内，所述框架的内壁设置有多个向内突出的突出部，所述突出部的上平面低于所述框架的上平面，当所述框架收纳所述镜筒后，所述框架的上平面的水平高度高于所述镜筒上平面的水平高度，所述突出部的上平面与所述镜筒的上平面处于同一水平面；
上弹片构件，所述上弹片构件设有导通电路，所述上弹片构件包括与所述突出部数量对应的多个上弹片单元，每个所述上弹片单元包括连接于所述框架上平面的第一固定部、连接于一个所述突出部上平面的第二固定部、连接于所述镜筒上平面的第三固定部、连接所述第一固定部与所述第二固定部的第一连接臂、以及连接第二固定部与第三固定部的第二连接臂；
驱动组件，所述驱动组件用于驱动所述镜筒沿垂直于所述镜筒的光轴方向运动。
更进一步地，所述上弹片单元为四个且两个为一组，每组所述上弹片单元的两个所述第一固定部通过一第一连接部连接。
更进一步地，每组所述上弹片单元的两个第三固定部通过一第二连接部连接。
更进一步地，所述驱动组件包括磁钢构件以及驱动线圈；磁钢构件包括固定于所述框架相对两侧的第一驱动磁钢以及固定于所述框架另外相对两侧的第二驱动磁钢；所述驱动线圈套设于所述镜筒的外周并与所述磁钢构件间隔；所述磁钢构件的充磁方向与所述驱动线圈的绕线平面平行并驱动所述驱动线圈沿所述镜筒的光轴方向运动。
更进一步地，所述镜头驱动装置还包括防抖线圈构件以及贴设于所述底座上的线路板，所述防抖线圈构件包括固定于所述线路板上并与所述第一驱动磁钢间隔相对的第一防抖线圈以及固定于所述线路板上并与所述第二驱动磁钢间隔相对的第二防抖线圈，所述第一防抖线圈位于所述第一驱动磁钢的磁场范围内并驱动所述第一驱动磁钢沿垂直于所述光轴方向的第一方向运动，所述第二防抖线圈位于所述第二驱动磁钢的磁场范围内并驱动所述第二驱动磁钢沿垂直于所述光轴方向的第二方向运动，其中，所述第二方向垂直于所述第一方向。
更进一步地，所述镜头驱动装置还包括防抖悬丝，所述防抖悬丝包括多根且环绕所述框架设置，且每根所述防抖悬丝的两端分别连接所述底座与所述第一固定部。
更进一步地，所述第一固定部设置有向外延伸的延伸部，所述防抖悬丝的一端通过所述延伸部与所述第一固定部连接。
更进一步地，所述镜头驱动装置还包括配合上弹片构件将所述镜筒支撑于所述框架内的下弹片构件，所述下弹片构件包括多个下弹片单元，每个所述下弹片单元包括连接于所述框架下平面的第四固定部、连接于所述镜筒下平面的第五固定部、以及连接所述第四固定部与所述第五固定部的第三连接臂。
更进一步地，所述框架上设置有多根第一连接柱，所述上弹片构件与所述下弹片构件通过所述第一连接柱与所述框架连接。
更进一步地，所述镜筒上设置有多根第二连接柱，所述上弹片构件与所述下弹片构件通过所述第二连接柱与所述镜筒连接。
更进一步地，所述框架上设置有限位凹槽，所述镜筒上设置有与所述限位凹槽对应的限位凸块，所述限位凸块间隔设置在所述限位凹槽内。
更进一步地，所述第一固定部对应所述限位凹槽的位置设置有用于限制所述镜筒沿所述光轴方向运动的止位部。
更进一步地，一个所述第一防抖线圈与一个所述第二防抖线圈分别包括两个防抖子线圈，所述第一防抖线圈中的两个所述防抖子线圈间隔设置，所述第二防抖线圈中的两个所述防抖子线圈间隔设置。
更进一步地，所述镜头驱动装置还包括两个霍尔传感器，一个所述霍尔传感器设于所述第一防抖线圈中的两个所述防抖子线圈之间并用于检测所述镜筒在所述第一方向上的位移，另一个所述霍尔传感器设于所述第二防抖线圈中的两个所述防抖子线圈之间并用于检测所述镜筒在所述第二方向上的位移。
 有益效果
本实用新型实施例通过在框架上设置突出部，使框架形成了两段结构，且突出部的上平面还与所述镜筒的上平面处于同一水平面，再结合上弹片构件的设计，从而使本实用新型在实现驱动镜头的作用下，还使镜筒上表面的水平高度低于框架上表面的水平高度，进而实现了整体结构的空间压缩，减小了厚度空间需求，且结构简单，便于生产制造。
 附图说明
为了更清楚地说明本实用新型实施例或现有技术中的技术方案，下面将对实施例或现有技术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他的附图。
图1是本实用新型实施例提供的一种镜头驱动装置的结构分解示意图。
图2是本实用新型实施例提供的一种镜头驱动装置的整体结构示意图。
图3是图2中沿A-A线的剖视图。
图4是图3中框选部分的放大示意图。
图5是本实用新型实施例提供的一种镜头驱动装置去掉上盖的结构示意图。
图6是图5中框选部分的放大示意图。
图7是本实用新型实施例提供的一种镜头驱动装置去掉部分结构的第一个示意图。
图8是本实用新型实施例提供的一种镜头驱动装置去掉部分结构的第二个示意图。
图9是本实用新型实施例提供的一种镜头驱动装置中底板、线路板、以及线路板上结构的示意图。
其中，1、底座；2、线路板；3、霍尔传感器；4、防抖线圈构件；41、第一防抖线圈；411、防抖子线圈；42、第二防抖线圈；5、下弹片单元；51、第四固定部；52、第三连接臂；53、第五固定部；6、镜筒；61、第二连接柱；62、限位凸块；7、驱动线圈；8、防抖悬丝；9、框架；91、收容空间；92、第一连接柱；10、磁钢构件；101、第一驱动磁钢；102、第二驱动磁钢；11、上弹片单元；111、第一固定部；112、第二固定部；113、第三固定部；114、第一连接臂；115、第二连接臂；116、第一连接部；117、第二连接部；118、延伸部；119、止位部；1110、突出部；1111、限位凹槽；12、外壳。
 本发明的最佳实施方式
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仅用以解释本实用新型，并不用于限定本实用新型。
本实用新型实施例提供了一种镜头驱动装置，如附图1所示，包括：底座1、外壳12、镜筒6、框架9、上弹片构件、驱动组件、下弹片构件、防抖悬丝8、线路板2、防抖线圈构件4、以及霍尔传感器3，其中，所述驱动组件用于驱动所述镜筒沿垂直于所述镜筒的光轴方向运动，包括磁钢构件以及驱动线圈7。
具体地，结合附图2和附图3所示，外壳12盖设于底座1上。
具体地，镜筒6用于安装镜片组。
具体地，结合附图1至附图4所示，框架9支撑于底座1上并位于外壳12内，框架9具有收容空间91，所述镜筒6收容于收容空间91内。
具体地，框架9的内壁设置有多个向内突出的突出部1110，突出部1110的上平面低于框架9的上平面，当框架9收纳镜筒6后，框架9上平面的水平高度高于镜筒6上平面的水平高度，突出部1110的上平面与镜筒6的上平面处于同一水平面。
在本实施例中，如附图7所示，框架9的内壁间隔设置有四个突出部1110。当然，根据实际需求，突出部1110的数量可进行改变，如可以改为三个、五个、六个等。
在本实施例中，如附图7所示，框架9为方形结构，此时，四个突出部1110分别设置在框架9四个角的位置。
更进一步地，如附图6或附图7所示，框架9上设置有限位凹槽1111，镜筒6上设置有与限位凹槽1111对应的限位凸块62，其中，限位凸块62间隔设置在限位凹槽1111内，以用于限制镜筒6扭转。
在本实施例中，如附图7所示，框架9上的限位凹槽1111为四个，分别设置在框架9的四个角上，相应的，镜筒6上的限位凸块62与其数量相同也为四个。当然，根据实际需求，限位凹槽1111的数量还可以为两个、三个、五个等。
具体地，结合附图5至附图7所示，上弹片构件包括与突出部1110数量对应的多个上弹片单元11，每个上弹片单元11包括连接于框架9上平面的第一固定部111、连接于突出部1110的第二固定部112、连接于镜筒6上平面的第三固定部113、连接第一固定部111与第二固定部112的第一连接臂114、以及连接第二固定部112与第三固定部113的第二连接臂115。
在本实施例中，如附图5所示，上弹片单元11为四个且两个为一组，每组上弹片单元11的两个第一固定部111通过一第一连接部116连接，每组上弹片单元11的两个第三固定部113通过一第二连接部117连接。
其中，两组上弹片单元11相互绝缘，每组形成一导通电路，以用于实现电信号的正、负两极传输。
具体地，如附图6所示，第一固定部111对应限位凹槽1111的位置设置有用于限制镜筒6沿光轴方向运动的止位部119，该止位部119位于限位凹槽1111的上方，以用于限制镜筒6沿光轴方向运动的距离。
具体地，如附图8所示，下弹片构件用于连接框架9与镜筒6的下平面，下弹片构件与上弹片构件配合将镜筒6弹性支撑于框架9内，以用于提供自动调焦功能时对镜筒6的回复力。
具体地，如附图8所示，下弹片构件包括多个下弹片单元5，每个下弹片单元5包括连接于框架9下平面的第四固定部51、连接于镜筒6下平面的第五固定部53、以及连接第四固定部51与第五固定部53的第三连接臂52。
在本实施例中，如附图8所示，下弹片单元5为四个，分别连接框架9四个角的位置。当然，根据实际需求，下弹片单元5还可以是三个、五个、六个等。
具体地，如附图5或附图8所示，框架9上设置有多根第一连接柱92，上弹片构件中的第一固定部111通过第一连接柱92与框架9连接，上弹片构件中的第二固定部112也通过第一连接柱92与突出部1110连接，而下弹片构件中的第四固定部51也通过第一连接柱92与框架9连接，其中，通过第一连接柱92与框架9连接的结构部分设置有穿孔，以穿设在第一连接柱92上与框架9连接。
具体地，结合附图5和附图8所示，框架9上的第一连接柱92的数量根据实际需求设定。
具体地，如附图5或附图8所示，镜筒6上设置有多根第二连接柱61，上弹片构件中的第三固定部113通过第二连接柱61与镜筒6连接，下弹片构件中的第五固定部53也通过第二连接柱61与镜筒6连接。
具体地，结合附图5和附图8所示，镜筒6上的第二连接柱61的数量根据实际需求设定。
具体地，结合附图1和附图5所示，防抖悬丝8为金属导电材料制成，包括多根且环绕框架9设置，且每根防抖悬丝8的两端分别连接底座1与第一固定部111。
在本实施例中，结合附图1和附图5所示，防抖悬丝8为四个，且分别对应框架9的四个角。这样可提高框架9的稳定性和可靠性。
更进一步地，如附图5所示，上弹片单元11中的第一固定部111设置有向外延伸的延伸部118，防抖悬丝8的一端通过延伸部118与第一固定部111连接，相当于，防抖悬丝8的一端与延伸部118连接，以间接的与上弹片构件连接并形成电性连接。
具体地，结合附图2和附图3所示，线路板2为柔性线路板2，且贴设于底座1上并与框架9间隔，线路板2通过防抖悬丝8与上弹片构件电性连接。
具体地，结合附图1和附图5所示，磁钢构件10包括：固定于框架9上相对两侧的第一驱动磁钢101、以及固定于框架9另外相对两侧的第二驱动磁钢102。
在本实施例中，结合附图1和附图5所示，第一驱动磁钢101为两个，分别设于框架9上相对的两侧，第二驱动磁钢102为两个，分别设于框架9上另外相对的两侧。
具体地，结合附图2和附图3所示，驱动线圈7套设于镜筒6的外周并与磁钢构件10间隔，且磁钢构件10中各磁钢的充磁方向与驱动线圈7的绕线平面平行。其中，磁钢构件10用于驱动驱动线圈7沿镜筒6的光轴方向运动，相应的，驱动线圈7会带动镜筒6沿光轴方向运动，以实现自动调焦功能。
当然，根据实际需求，也可以将磁钢构件10中各磁钢的充磁方向设置为垂直于镜筒6的光轴方向。
更进一步地，上弹片构件设置有导通电路，防抖悬丝具有导电性，驱动线圈7依次通过上弹片构件、及防抖悬丝8与线路板2电性连接，以用于传输实现驱动功能的信号。
具体地，结合附图1、附图2、附图3、附图9所示，防抖线圈构件4包括：固定于线路板2上并与第一驱动磁钢101间隔相对的第一防抖线圈41，以及固定于线路板2上并与第二驱动磁钢102间隔相对的第二防抖线圈42。其中，第一防抖线圈41位于第一驱动磁钢101的磁场范围内并驱动第一驱动磁钢101沿垂直于镜筒6光轴方向的第一方向运动，第二防抖线圈42位于第二驱动磁钢102的磁场范围内并驱动第二驱动磁钢102沿垂直于镜筒6光轴方向的第二方向运动。在本实施例中，第二方向垂直于第一方向。
具体地，防抖线圈构件4还与线路板2电性连接，以用于传输实现防抖功能的信号。
具体地，如附图9所示，霍尔传感器3固定于线路板2上以用于检测镜筒6在第一方向和第二方向上的位移。
在本实施例中，霍尔传感器3为两个，分别设置在线路板2上相邻的两侧，以检测镜筒6在第一方向上和第二方向上的位移。
更进一步地，如附图9所示，一个第一防抖线圈41与一个第二防抖线圈42分别包括两个防抖子线圈411，第一防抖线圈41中的两个防抖子线圈411间隔设置，第二防抖线圈42中的两个防抖子线圈411间隔设置。其中，一个霍尔传感器3设置在第一防抖线圈41中的两个防抖子线圈411之间，以用于检测镜筒6在第一方向上的位移，另一个霍尔传感器3设置在第二防抖线圈42中的两个防抖子线圈411之间，以用于检测镜筒6在第二方向上的位移。通过将霍尔传感器3设置在两个防抖子线圈411之间，可避免线圈对其产生干扰，以提升检测精度。
与现有技术相比，本实用新型通过在框架9上设置突出部1110，使框架9形成了两段结构，且突出部1110的上平面还与镜筒6的上平面处于同一水平面，再结合上弹片构件的设计，从而使本实用新型在实现驱动镜头的作用下，还使镜筒6上表面的水平高度低于框架9上表面的水平高度，进而实现了整体结构的空间压缩，减小了厚度空间需求，且结构简单，便于生产制造。
以上所述仅为本实用新型的较佳实施例而已，并不用以限制本实用新型，凡在本实用新型的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本实用新型的保护范围之内。

Claims (14)

  1. 一种镜头驱动装置，其特征在于，包括：
    底座；
    外壳，所述外壳盖设于所述底座上；
    镜筒，所述镜筒用于安装镜片组；
    框架，所述框架支撑于所述底座并具有收容空间，所述镜筒收容于所述收容空间内，所述框架的内壁设置有多个向内突出的突出部，所述突出部的上平面低于所述框架的上平面，当所述框架收纳所述镜筒后，所述框架的上平面的水平高度高于所述镜筒上平面的水平高度，所述突出部的上平面与所述镜筒的上平面处于同一水平面；
    上弹片构件，所述上弹片构件包括与所述突出部数量对应的多个上弹片单元，每个所述上弹片单元包括连接于所述框架上平面的第一固定部、连接于一个所述突出部上平面的第二固定部、连接于所述镜筒上平面的第三固定部、连接所述第一固定部与所述第二固定部的第一连接臂、以及连接第二固定部与第三固定部的第二连接臂；
    驱动组件，所述驱动组件用于驱动所述镜筒沿垂直于所述镜筒的光轴方向运动。
  2. 如权利要求1所述的镜头驱动装置，其特征在于，所述上弹片单元为四个且两个为一组，每组所述上弹片单元的两个所述第一固定部通过一第一连接部连接。
  3. 如权利要求2所述的镜头驱动装置，其特征在于，每组所述上弹片单元的两个第三固定部通过一第二连接部连接。
  4. 如权利要求1所述的镜头驱动装置，其特征在于，所述驱动组件包括磁钢构件以及驱动线圈；磁钢构件包括固定于所述框架相对两侧的第一驱动磁钢以及固定于所述框架另外相对两侧的第二驱动磁钢；所述驱动线圈套设于所述镜筒的外周并与所述磁钢构件间隔；所述磁钢构件的充磁方向与所述驱动线圈的绕线平面平行并驱动所述驱动线圈沿所述镜筒的光轴方向运动。
  5. 如权利要求4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防抖线圈构件以及贴设于所述底座上的线路板，所述防抖线圈构件包括固定于所述线路板上并与所述第一驱动磁钢间隔相对的第一防抖线圈以及固定于所述线路板上并与所述第二驱动磁钢间隔相对的第二防抖线圈，所述第一防抖线圈位于所述第一驱动磁钢的磁场范围内并驱动所述第一驱动磁钢沿垂直于所述光轴方向的第一方向运动，所述第二防抖线圈位于所述第二驱动磁钢的磁场范围内并驱动所述第二驱动磁钢沿垂直于所述光轴方向的第二方向运动，其中，所述第二方向垂直于所述第一方向。
  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防抖悬丝，所述防抖悬丝包括多根且环绕所述框架设置，且每根所述防抖悬丝的两端分别连接所述底座与所述第一固定部。
  7. 如权利要求6所述的镜头驱动装置，其特征在于，所述第一固定部设置有向外延伸的延伸部，所述防抖悬丝的一端通过所述延伸部与所述第一固定部连接。
  8. 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配合上弹片构件将所述镜筒支撑于所述框架内的下弹片构件，所述下弹片构件包括多个下弹片单元，每个所述下弹片单元包括连接于所述框架下平面的第四固定部、连接于所述镜筒下平面的第五固定部、以及连接所述第四固定部与所述第五固定部的第三连接臂。
  9. 如权利要求8所述的镜头驱动装置，其特征在于，所述框架上设置有多根第一连接柱，所述上弹片构件与所述下弹片构件通过所述第一连接柱与所述框架连接。
  10. 如权利要求8或9所述的镜头驱动装置，其特征在于，所述镜筒上设置有多根第二连接柱，所述上弹片构件与所述下弹片构件通过所述第二连接柱与所述镜筒连接。
  11. 如权利要求1所述的镜头驱动装置，其特征在于，所述框架上设置有限位凹槽，所述镜筒上设置有与所述限位凹槽对应的限位凸块，所述限位凸块间隔设置在所述限位凹槽内。
  12. 如权利要求11所述的镜头驱动装置，其特征在于，所述第一固定部对应所述限位凹槽的位置设置有用于限制所述镜筒沿所述光轴方向运动的止位部。
  13. 如权利要求5所述的镜头驱动装置，其特征在于，一个所述第一防抖线圈与一个所述第二防抖线圈分别包括两个防抖子线圈，所述第一防抖线圈中的两个所述防抖子线圈间隔设置，所述第二防抖线圈中的两个所述防抖子线圈间隔设置。
  14. 如权利要求13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两个霍尔传感器，一个所述霍尔传感器设于所述第一防抖线圈中的两个所述防抖子线圈之间并用于检测所述镜筒在所述第一方向上的位移，另一个所述霍尔传感器设于所述第二防抖线圈中的两个所述防抖子线圈之间并用于检测所述镜筒在所述第二方向上的位移。
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CN112198735B (zh) * 2020-12-01 2021-02-19 常州市瑞泰光电有限公司 一种镜头驱动装置
CN113923365A (zh) * 2021-11-16 2022-01-11 广东海德亚科技有限公司 防抖结构和防抖摄像头
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