WO2021000162A1 - 镜头模组 - Google Patents

镜头模组 Download PDF

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Publication number
WO2021000162A1
WO2021000162A1 PCT/CN2019/094062 CN2019094062W WO2021000162A1 WO 2021000162 A1 WO2021000162 A1 WO 2021000162A1 CN 2019094062 W CN2019094062 W CN 2019094062W WO 2021000162 A1 WO2021000162 A1 WO 2021000162A1
Authority
WO
WIPO (PCT)
Prior art keywords
fixing member
lens
shape memory
memory alloy
base
Prior art date
Application number
PCT/CN2019/094062
Other languages
English (en)
French (fr)
Inventor
张晋
李刚
卢继亮
李林珍
Original Assignee
瑞声光学解决方案私人有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 瑞声光学解决方案私人有限公司 filed Critical 瑞声光学解决方案私人有限公司
Priority to PCT/CN2019/094062 priority Critical patent/WO2021000162A1/zh
Priority to CN201921049666.0U priority patent/CN210166550U/zh
Priority to US16/916,157 priority patent/US11500223B2/en
Priority to JP2020113565A priority patent/JP6883936B2/ja
Publication of WO2021000162A1 publication Critical patent/WO2021000162A1/zh

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
    • F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
    • F03G7/06—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like
    • F03G7/061—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like characterised by the actuating element
    • F03G7/0614—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like characterised by the actuating element using shape memory elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
    • F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
    • F03G7/06—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like
    • F03G7/065—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like using a shape memory element
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/64—Imaging systems using optical elements for stabilisation of the lateral and angular position of the image
    • G02B27/646—Imaging systems using optical elements for stabilisation of the lateral and angular position of the image compensating for small deviations, e.g. due to vibration or shake
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/36—Mechanical coupling means
    • G02B6/38—Mechanical coupling means having fibre to fibre mating means
    • G02B6/3807—Dismountable connectors, i.e. comprising plugs
    • G02B6/3833—Details of mounting fibres in ferrules; Assembly methods; Manufacture
    • G02B6/3855—Details of mounting fibres in ferrules; Assembly methods; Manufacture characterised by the method of anchoring or fixing the fibre within the ferrule
    • G02B6/3858—Clamping, i.e. with only elastic deformation
    • G02B6/3859—Ferrules characterised by use of shape memory material [SMM], e.g. heat recoverable polymers, Ti-Ni compounds
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/01—Connections using shape memory materials, e.g. shape memory metal

Definitions

  • the utility model relates to the technical field of lens optical imaging, in particular to a lens module.
  • This high-performance lens module generally has an autofocus function (Auto Focusing, AF) and optical image stabilization (Optical Image Stabilization, OIS).
  • the high-performance lens module moves the lens along the optical axis of the lens during autofocus, and moves the lens along the optical axis perpendicular to the lens when the optical image stabilization function is realized.
  • a shape memory alloy wire is used to drive the lens holder to move along the direction perpendicular to the optical axis of the lens to achieve the purpose of anti-shake.
  • the driving end of the shape memory alloy wire will fall off during the working process, it is usually The glue method is used to strengthen and fix it, but in this way, there is a drawback, that is, when one group of shape memory alloy wires drives the lens mount to move in one direction, the other groups of shape memory alloy wires will generate a lot of stress. In particular, the set of shape memory alloy wires placed on the opposite side will generate greater stress, and therefore, will reduce the service life of the shape memory alloy wires.
  • the purpose of the utility model is to provide a lens module, which aims to solve the technical problem of increasing the fixing of the shape memory alloy wire while preventing it from generating greater stress.
  • a lens module including a base, a lens holder, a support assembly for supporting the lens holder, and several groups for driving the lens holder to move in a direction perpendicular to the optical axis of the lens
  • a shape memory alloy wire the lens holder is suspended in the base through the support assembly; each group of the shape memory alloy wire includes two ends fixed to one of the base and the lens holder, and The drive end located between the two ends, the other of the base and the lens holder is provided with a fixing piece, the drive end is connected to the fixing piece, and the fixing piece is provided with a A stopper for the drive end to slip off the fixing member.
  • the fixing member includes a fitting surface that is fitted to the driving end
  • the baffle includes a mounting portion that is mounted to the fixing member and a mounting portion extending from the mounting portion and beyond the affixing surface. Blocking department.
  • the mounting portion and the shielding portion are integrally formed.
  • an included angle ⁇ is provided between the shielding portion and the bonding surface, wherein 0° ⁇ 90°.
  • the bonding surface is an arc-shaped surface.
  • the baffle has a semicircular shape
  • the baffle has an arc-shaped side surface
  • the arc-shaped side surface is located on a side of the central axis of the fixing member away from the end; or, the baffle is located
  • the central axis of the fixing member is a rectangle away from the end
  • the baffle has long sides spaced apart on the side of the fixing member away from the end and two sides from the long Both ends of the side surface extend toward the side where the end is located.
  • the length of the long side surface is defined as L, and the distance between the two ends of the shape memory alloy wire is D, where L/ D ⁇ 1/5.
  • one of the fixing member and the mounting portion is provided with a clamping hole
  • the other of the fixing member and the mounting portion is provided with a protruding post
  • the blocking piece passes through the clamping hole and The protruding column is snap-fitted to the fixing member.
  • the protruding column is provided on the fixing member, the fixing surface of the protruding column away from the end is flush with the fitting surface, and the fixing member further includes a body, the protruding column and The body is integrally formed.
  • the end of the shape memory alloy wire is fixed to the base;
  • the base includes a base plate and a frame fixed on the base plate, and the base plate and the frame body are formed together for receiving The accommodating space of the lens holder;
  • the frame is square and includes four side plates arranged in the circumferential direction, and the end of the shape memory alloy wire is fixed to the end of the side plate facing the substrate;
  • the fixing member is mounted on the lens mount, the body extends from the lens mount toward the substrate, and the bonding surface is provided on one side of the body.
  • each of the side plates is provided with two fixing grooves at one end facing the substrate
  • the lens module further includes a plurality of conductive elements, and each conductive element is fixed in one of the fixing grooves.
  • the two ends of the shape memory alloy wire are respectively fixedly connected to the two conductive members fixed to the same side plate;
  • the base further includes a circuit board fixed to the side of the substrate facing the lens mount , The conductive member is electrically connected to the circuit board, and there is a gap between the baffle and the circuit board.
  • the beneficial effect of the utility model is that by adding a stopper on the fixing piece, the shape memory alloy wire can be effectively prevented from falling off the fixing piece, and the fixing of the shape memory alloy wire in the optical axis direction of the lens is strengthened.
  • the fixing method does not further fix the drive end of the shape memory alloy wire itself. When one of the shape memory alloy wires is working, it will not increase the stress caused by the other groups of shape memory alloy wires, thereby prolonging the service life of the shape memory alloy wires. .
  • FIG. 1 is a schematic diagram of a three-dimensional structure of a lens module provided by Embodiment 1 of the present invention
  • FIG. 2 is a schematic diagram of the exploded structure of the lens module provided in the first embodiment of the present invention.
  • FIG. 3 is a schematic diagram of the three-dimensional structure of the lens module provided by the first embodiment of the present invention with the outer shell removed;
  • FIG. 4 is a schematic diagram of the three-dimensional structure of the lens module provided by the first embodiment of the present invention with the housing, substrate and circuit board removed;
  • Figure 5 is a partial enlarged schematic diagram of the circle A in Figure 4.
  • FIG. 6 is a schematic diagram of a three-dimensional structure of a base provided in the first embodiment of the present invention.
  • FIG. 7 is a schematic diagram of the three-dimensional structure of the baffle provided by the first embodiment of the present invention.
  • Figure 8 is a three-dimensional schematic diagram of the cooperation of the baffle and the fixing member provided by the first embodiment of the present invention.
  • FIG. 9 is a schematic diagram of the three-dimensional structure of the baffle and the base provided by the second embodiment of the present invention.
  • Figure 10 is a sectional view of B-B in Figure 9;
  • FIG. 11 is a schematic diagram of the three-dimensional structure of the baffle and the fixing member provided by the second embodiment of the present invention.
  • FIG. 12 is a schematic diagram of the three-dimensional structure of the baffle provided by the second embodiment of the present invention.
  • FIG. 13 is a schematic diagram of the three-dimensional structure of the base provided by the second embodiment of the present invention.
  • Fig. 14 is a partial enlarged schematic diagram of the circle C in Fig. 12.
  • a lens module 100 provided by an embodiment of the present invention includes a base 1, a lens holder 2, a support assembly 3 for supporting the lens holder 2, and a support assembly 3 for driving the lens holder 2 along a vertical axis
  • One end 41 and a driving end 42 located between the two ends 41, the other of the base 1 and the lens holder 2 is provided with a fixing member 5, the driving end 42 is connected to the fixing member 5, and the fixing member 5 is provided with a The blocking piece 6 where the driving end 42 slips from the fixing member 5.
  • the two ends 41 of each group of shape memory alloy wires 4 are fixed to one of the base 1 and the lens holder 2, and the drive end 42 is fixed to the other of the base 1 and the lens holder 2 by a fixing member 5.
  • the shape memory alloy wire 4 can be effectively prevented from falling off from the fixing member 5, and the fixing of the shape memory alloy wire 4 in the direction of the optical axis of the lens is strengthened.
  • the driving end 42 of the shape memory alloy wire 4 itself is not further fixed.
  • no additional group of shape memory alloy wires 4 will be added to generate stress, and the shape memory alloy wire 4 will be lengthened. Service life.
  • the base 1 includes a base plate 11 and a frame body 12 fixed on the base plate 11, and the base plate 11 and the frame body 12 together form a receiving space for accommodating the lens holder 2.
  • the frame body 12 has a square shape and includes four side plates 121 arranged in the circumferential direction.
  • the end 41 of the shape memory alloy wire 4 is fixed to the end of the side plate 121 facing the substrate 11.
  • each side plate 121 is provided with two fixing grooves 122 at one end facing the base plate 11.
  • the lens module 100 further includes a plurality of conductive members 7, and each conductive member 7 is fixed in a corresponding fixing groove 122.
  • the two ends 41 of the shape memory alloy wire 4 are respectively fixedly connected to the two conductive members 7 fixed to the same side plate 121.
  • the base 1 also includes a circuit board 8 fixed to the side of the substrate 11 facing the lens mount 2.
  • the conductive member 7 contacts the circuit board 8 to achieve electrical connection, and there is a gap between the baffle 6 and the circuit board 8. gap.
  • the circuit board 8 is connected to an external power source for supplying power to the conductive element 7 and the support assembly 3.
  • the conductive element 7 can transmit current to the shape memory alloy wire 4, and the shape memory alloy wire 4 shrinks and deforms after being energized to drive the lens mount 2 along Move in the direction perpendicular to the optical axis of the lens, thus realizing the anti-shake function of the lens driving device.
  • the lens holder 2 includes a base 21 and a lens holder 22 mounted to the base 21.
  • the fixing member 5 is provided on the side of the base 21 facing the substrate 11.
  • the base 21 is preferably square, and each side of the base 21 is provided There is a fixing member 5, and the connection line between the fixing member 5 and the two fixing grooves 122 on the corresponding side plate 121 is in a "V" shape, and correspondingly, the shape memory alloy wire 4 is in a "V" shape. It can be understood that the shape memory alloy wire 4 can take other shapes according to the number of the fixing members 5 and the fixing form.
  • the fixing member 5 includes a main body 51 extending from the base 21 toward the base plate 11 and a protrusion 52 provided on the main body 51.
  • One side of the main body 51 is provided with a bonding surface that is bonded to the driving end 42 511;
  • the baffle 6 includes a mounting portion 61 mounted to the fixing member 5 and a shielding portion 62 extending from the mounting portion 61 toward the optical axis of the lens and beyond the bonding surface 511, one of the fixing member 5 and the mounting portion 61 is provided
  • a convex post 52 is provided on the other of the clamping hole 63, the fixing member 5 and the mounting portion 61, and the blocking piece 6 is installed to the fixing member 5 through the clamping hole 63 and the convex column 52 in a snap fit.
  • the protruding post 52 is provided on the fixing member 5, and the mounting portion 61 of the blocking piece 6 is provided with a clamping hole 63, and the blocking piece 6 is installed to the fixing member 5 through the clamping hole 63 and the buckle of the convex post 52.
  • the fixing member 5 is provided with a clamping hole 63
  • the mounting portion 61 of the blocking piece 6 is provided with a protrusion 52.
  • the fixing surface 521 of the protruding column 52 away from the end 41 and the bonding surface 511 may be spaced apart or arranged flush. In this embodiment, there is a space between the two.
  • the blocking piece 6 is semicircular, the blocking piece 6 has an arc-shaped side surface 64, and the arc-shaped side surface 64 is located on the side of the central axis of the fixing member 5 away from the end 41.
  • the mounting portion 61 and the shielding portion 62 are integrally formed, the mounting portion 61 is fixed to the fixing member 5, and the shielding portion 62 is provided on the side of the mounting portion 61 corresponding to the bonding surface 511 and extends beyond the bonding surface 511 in the direction perpendicular to the optical axis.
  • a receiving groove for receiving the driving end 42 of the shape memory alloy wire 4 is formed between the bonding surface 511, the shielding portion 62 and the base 21.
  • the fixing member 5 includes a semi-cylindrical body 51, and the driving end 42 of the shape memory alloy wire 4 is attached to the arc-shaped attachment surface 511 of the semi-cylindrical body 51, so that the shape memory of edges and corners can be avoided.
  • the damage caused by the alloy wire 4 extends its service life.
  • the shielding portion 62 is provided on the side of the mounting portion 61 corresponding to the arc-shaped bonding surface 511, which can effectively prevent the shape memory alloy wire 4 from falling off the fixing member 5 along the direction parallel to the optical axis. Moreover, when the shape memory alloy wire 4 on one side is working, the shape memory alloy wire 4 on the other side will not generate greater stress due to the strengthening and fixing of the driving end 42.
  • an included angle ⁇ is provided between the shielding portion 62 and the bonding surface 511, where 0° ⁇ 90°.
  • the included angle ⁇ is 90°.
  • each group of shape memory alloy wires 4 includes a plurality of shape memory alloy wires 4.
  • each group includes four shape memory alloy wires 4, and the ends 41 of the four shape memory alloy wires 4 are correspondingly welded together. Understandably, the number of shape memory alloy wires 4 in each group can be adjusted according to the weight of the driven component and the characteristics of the shape memory alloy wires 4.
  • the lens module 100 also includes a housing 9.
  • the housing 9 includes a top wall and a number of side walls.
  • the housing 9 is sleeved on the base 1, and the four side plates 121 of the frame 12 are at one end away from the bottom plate. It is in contact with the top wall of the housing 9 to support the housing 9.
  • the housing 9 is used to provide protection and dustproof for the entire lens module 100, prevent dust from entering the lens module 100, and avoid damaging the internal parts of the housing 9.
  • the baffle 6 is a long strip, which can be rectangular or approximately rectangular.
  • the baffle 6 is a rectangle at a position away from the end 41 of the central axis of the fixing member 5, and the baffle 6 has a long side surface 65 spaced apart on the side of the fixing member 5 away from the end 41 and two Both ends of the long side side 65 extend toward the side where the end 41 is located.
  • the short side side 66 defines the length of the long side side 65 as L, and the distance between the two ends 41 of the shape memory alloy wire 4 is D (not shown in the figure) ), where L/D ⁇ 1/5.
  • the fixing surface 521 of the protruding post 52 away from the end 41 is flush with the bonding surface 511, and the body 51 of the fixing member 5 and the protruding post 52 are integrally formed.
  • the fixing surface 521 is flush with the bonding surface 511 and is integrally formed.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lens Barrels (AREA)
  • Adjustment Of Camera Lenses (AREA)
  • Studio Devices (AREA)

Abstract

一种镜头模组(100)，包括基座(1)、镜头座(2)、用于支撑镜头座(2)的支撑组件(3)和用于驱动镜头座(2)沿垂直于镜头光轴方向运动的若干组形状记忆合金线(4)，镜头座(2)通过支撑组件(3)悬挂于基座(1)内；每组形状记忆合金线(4)包括固定于基座(1)和镜头座(2)其中之一的两个末端(41)和位于两个末端(41)之间的驱动端(42)，基座(1)和镜头座(2)其中之另一上设有固定件(5)，驱动端(42)连接到固定件(5)，固定件(5)上设有防止驱动端(42)从固定件(5)上滑脱的挡片(6)。通过在固定件(5)上加设挡片(6)，可有效防止形状记忆合金线(4)从固定件(5)上脱落，并且，当其中一组形状记忆合金线(4)工作时，不会额外增加其他组的形状记忆合金线(4)产生应力，延长形状记忆合金线(4)的使用寿命。

Description

镜头模组 技术领域
本实用新型涉及镜头光学成像技术领域，尤其涉及一种镜头模组。
 背景技术
近年来，在如智能手机、平板电脑一样的便携式终端机上都装载有高性能镜头模组。该高性能镜头模组一般具有自动对焦功能(Auto Focusing，AF)和光学防抖功能（Optical Image Stabilization, OIS）。高性能镜头模组在自动对焦时，使镜头沿镜头的光轴方向移动，在实现光学防抖功能时，使镜头沿垂直镜头的光轴方向移动。现有技术中，采用形状记忆合金线驱动镜头座沿垂直镜头的光轴方向移动实现防抖的目的，由于形状记忆合金线的驱动端会在工作的过程中发生脱落现象，所以通常会采用打胶方式对其进行加强固定，但是采用这种方式，存在一个弊端，即当其中一组形状记忆合金线驱动镜头座向一个方向移动后，其他组的形状记忆合金线会产生很大的应力，特别是设置在其对面的那一组形状记忆合金线，产生的应力更大，因此，会降低形状记忆合金线的使用寿命。
因此，有必要提供一种改进的镜头模组以解决上述问题。
 技术问题
本实用新型的目的在于提供一种镜头模组，其旨在解决增加形状记忆合金线固定的同时防止其产生更大应力的技术问题。
 技术解决方案
本实用新型的技术方案如下： 一种镜头模组，包括基座、镜头座、用于支撑所述镜头座的支撑组件和用于驱动所述镜头座沿垂直于镜头光轴方向运动的若干组形状记忆合金线，所述镜头座通过所述支撑组件悬挂于所述基座内；每组所述形状记忆合金线包括固定于所述基座和所述镜头座其中之一的两个末端和位于两个所述末端之间的驱动端，所述基座和所述镜头座其中之另一上设有固定件，所述驱动端连接到所述固定件，所述固定件上设有防止所述驱动端从所述固定件上滑脱的挡片。
进一步地，所述固定件包括与所述驱动端相贴合的贴合面，所述挡片包括安装到所述固定件的安装部和自所述安装部延伸并超出所述贴合面的遮挡部。
进一步地，所述安装部与所述遮挡部一体成型。
进一步地，所述遮挡部与所述贴合面之间设有夹角α，其中，0°＜α≤90°。
进一步地，所述贴合面为弧形面。
进一步地，所述挡片呈半圆形，所述挡片具有弧形侧面，且所述弧形侧面位于所述固定件之中心轴远离所述末端的一侧；或者，所述挡片位于所述固定件之中心轴远离所述末端的部位呈矩形，所述挡片具有间隔设于所述固定件之中心轴远离所述末端的一侧的长边侧面和两个分别从所述长边侧面两端朝所述末端所在侧延伸的短边侧面，定义所述长边侧面的长度为L，所述形状记忆合金线的两个所述末端之间的距离为D，其中，L/D≥1/5。
进一步地，所述固定件和所述安装部其中之一上设有卡孔，所述固定件和所述安装部其中之另一上设有凸柱，所述挡片通过所述卡孔与所述凸柱卡扣配合安装到所述固定件。
进一步地，所述凸柱设于所述固定件上，所述凸柱之远离所述末端的固定面与所述贴合面齐平设置，所述固定件还包括本体，所述凸柱和所述本体一体成型。
进一步地，所述形状记忆合金线的所述末端固定到所述基座；所述基座包括基板和固定在所述基板上的框体，所述基板和所述框体共同形成用于收容所述镜头座的收容空间；所述框体为方形，包括四个沿周向设置的侧板，所述形状记忆合金线的所述末端固定到所述侧板朝向所述基板的一端；所述固定件安装到所述镜头座，所述本体自所述镜头座朝向所述基板的方向延伸，所述贴合面设于所述本体的一侧。
进一步地，每个所述侧板朝向所述基板的一端设有两个固定槽，所述镜头模组还包括多个导电件，每个导电件固定在一个所述固定槽内，每组所述形状记忆合金线的两个所述末端分别固定连接到固定于同一个所述侧板的两个所述导电件；所述基座还包括固定到基板朝向所述镜头座一侧的电路板，所述导电件与所述电路板电连接，所述挡片与所述电路板之间存在间隙。
 有益效果
本实用新型的有益效果在于：通过在固定件上加设挡片，可有效的防止形状记忆合金线从固定件上脱落，加强了对形状记忆合金线在镜头的光轴方向的固定，该加强固定方式并未对形状记忆合金线驱动端本身做进一步的固定，当其中一组形状记忆合金线工作时，不会额外增加其他组的形状记忆合金线产生应力，延长形状记忆合金线的使用寿命。
 附图说明
图1是本实用新型实施例一提供的镜头模组的立体结构示意图；
图2是本实用新型实施例一提供的镜头模组的爆炸结构示意图；
图3是本实用新型实施例一提供的镜头模组去掉外壳的立体结构示意图；
图4是本实用新型实施例一提供的镜头模组去掉外壳、基板和电路板的立体结构示意图；
图5是图4中圈A处的局部放大示意图；
图6是本实用新型实施例一提供的底座的立体结构示意图；
图7是本实用新型实施例一提供的挡片的立体结构示意图；
图8是本实用新型实施例一提供的挡片和固定件配合的立体结构示意图；
图9是本实用新型实施例二提供的挡片和底座配合的立体结构示意图；
图10是图9中B-B的剖视图；
图11是本实用新型实施例二提供的挡片和固定件配合的立体结构示意图；
图12是本实用新型实施例二提供的挡片的立体结构示意图；
图13是本实用新型实施例二提供的底座的立体结构示意图；
图14是图12中圈C处的局部放大示意图。
附图标号说明：100、镜头模组；1、基座；11、基板；12、框体；121、侧板；122、固定槽；2、镜头座；21、底座；22、镜头支架；3、支撑组件；4、形状记忆合金线；41、末端；42、驱动端；5、固定件；51、本体；511、贴合面；52、凸柱；521、固定面；6、挡片；61、安装部；62、遮挡部；63、卡孔；64、弧形侧面；65、长边侧面；66、短边侧面；7、导电件；8、电路板；9、外壳。
 本发明的实施方式
下面结合附图和实施方式对本实用新型作进一步说明。
实施例一：
请参阅图1-8，本实用新型实施例提供的一种镜头模组100，包括基座1、镜头座2、用于支撑镜头座2的支撑组件3和用于驱动镜头座2沿垂直于镜头光轴方向运动的若干组形状记忆合金线4，镜头座2通过支撑组件3悬挂于基座1内；每组形状记忆合金线4包括固定于基座1和镜头座2其中之一的两个末端41和位于两个末端41之间的驱动端42，基座1和镜头座2其中之另一上设有固定件5，驱动端42连接到固定件5，固定件5上设有防止驱动端42从固定件5上滑脱的挡片6。通过每组形状记忆合金线4的两个末端41固定于基座1和镜头座2其中之一上，驱动端42通过固定件5固定于基座1和镜头座2其中之另一上，用于实现镜头座2沿垂直光轴的方向移动。通过在固定件5上加设挡片6，可有效的防止形状记忆合金线4从固定件5上脱落，加强了对形状记忆合金线4在镜头的光轴方向的固定，该加强固定方式并未对形状记忆合金线4驱动端42本身做进一步的固定，当其中一组形状记忆合金线4工作时，不会额外增加其他组的形状记忆合金线4产生应力，延长形状记忆合金线4的使用寿命。
请参阅图2-5，基座1包括基板11和固定在基板11上的框体12，基板11和框体12共同形成用于收容镜头座2的收容空间。框体12为方形，包括四个沿周向设置的侧板121，形状记忆合金线4的末端41固定到侧板121朝向基板11的一端。具体地，每个侧板121朝向基板11的一端设有两个固定槽122，镜头模组100还包括多个导电件7，每个导电件7固定在一个相应的固定槽122内，每组形状记忆合金线4的两个末端41分别固定连接到固定于同一个侧板121的两个导电件7。
请参阅图2-3，基座1还包括固定到基板11朝向镜头座2一侧的电路板8，导电件7与电路板8接触从而实现电连接，挡片6与电路板8之间存在间隙。电路板8与外部电源连接，用于给导电件7和支撑组件3供电，导电件7可将电流传输给形状记忆合金线4，形状记忆合金线4通电后发生收缩变形，驱动镜头座2沿垂直镜头光轴的方向移动，因此实现镜头驱动装置的防抖功能。
请参阅图3-6，镜头座2包括底座21和安装至底座21的镜头支架22，固定件5设于底座21朝向基板11的一侧，底座21优选为方形，底座21的每一侧设有一个固定件5，固定件5与对应的侧板121上的两个固定槽122连线呈“V”字形，相应的，形状记忆合金线4呈“V”字形。可以理解，形状记忆合金线4根据固定件5的个数以及固定形式的不同，可以呈其他形状。
请参阅5-8，固定件5包括自底座21朝向基板11方向延伸的本体51及设于本体51上的凸柱52，本体51的一侧设有与驱动端42相贴合的贴合面511；挡片6包括安装到固定件5的安装部61和自安装部61朝向镜头的光轴延伸并超出贴合面511的遮挡部62，固定件5和安装部61其中之一上设有卡孔63，固定件5和安装部61其中之另一上设有凸柱52，挡片6通过卡孔63与凸柱52的卡扣配合安装到固定件5。在本实施例中，凸柱52设于固定件5上，挡片6的安装部61设有卡孔63，挡片6通过卡孔63与凸柱52的卡扣配合安装到固定件5，当然，固定件5上设置卡孔63，挡片6的安装部61设置凸柱52也是可以的。凸柱52之远离末端41的固定面521与贴合面511可以设有间距，也可以齐平设置，在本实施例中，两者之间设有间距。在本实施例中，挡片6为半圆形，挡片6具有弧形侧面64，且弧形侧面64位于固定件5之中心轴远离末端41的一侧。安装部61与遮挡部62一体成型，安装部61固定到固定件5，遮挡部62设于安装部61之对应贴合面511的一侧并在垂直光轴的方向上超出贴合面511，从而在贴合面511、遮挡部62及底座21之间形成用于收容形状记忆合金线4的驱动端42的收容槽。在本实施例中，固定件5包括半圆柱形的本体51，形状记忆合金线4的驱动端42贴合到半圆柱形本体51的弧形贴合面511，因此可以避免棱角等对形状记忆合金线4产生的损伤，延长其使用寿命。遮挡部62设在安装部61与弧形贴合面511对应的一侧，可有效防止形状记忆合金线4从固定件5上沿平行光轴方向脱落。而且，在其中一侧的形状记忆合金线4工作时，其他侧的形状记忆合金线4不会因驱动端42被加强固定而产生更大的应力。
优选地，遮挡部62与贴合面511之间设有夹角α，其中，0°＜α≤90°。在本实施例中，夹角α为90°。
优选地，每组形状记忆合金线4包括多根形状记忆合金线4。在本实施例中，每组包括四根形状记忆合金线4，四根形状记忆合金线4的末端41相对应的焊接在一起。可以理解地，根据被驱动的组件的重量以及形状记忆合金线4的特性，可以调整每组中的形状记忆合金线4的数量。
请参阅图1-3，镜头模组100还包括外壳9，外壳9包括顶壁和若干侧壁，外壳9套设于基座1上，框体12的四个侧板121之远离底板的一端与外壳9的顶壁相接触，从而对外壳9起到支撑作用。外壳9用于给整个镜头模组100提供保护和防尘，避免灰尘进入镜头模组100，和避免损伤外壳9内部的零部件。
实施例二：
请参阅图9-14，本实施例与实施例一的区别在于，挡片6的形状以及固定件5的结构不同。在本实施例中，挡片6为长条形，可以为矩形或近似矩形。具体地，挡片6位于固定件5之中心轴远离末端41的部位呈矩形，挡片6具有间隔设于固定件5之中心轴远离末端41的一侧的长边侧面65和两个分别从长边侧面65两端朝末端41所在侧延伸的短边侧面66，定义长边侧面65的长度为L，形状记忆合金线4的两个末端41之间的距离为D（图中未示出），其中，L/D≥1/5。通过增加长边侧面65的长度，增大挡片6遮挡部62的面积，进一步增加挡片6防止记忆合金线4从固定件5滑脱的效果。
请参阅图图10和图13-14，凸柱52之远离末端41的固定面521与贴合面511齐平设置，固定件5的本体51和凸柱52一体成型。通过固定面521与贴合面511齐平设置，且一体成型，挡片6安装到固定件5后，挡片6与固定件5的本体51之间在沿垂直于镜头的光轴方向没有间隙，因此可避免形状记忆合金线4滑到该间隙中，提高镜头模组100的防抖精准性。
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. 一种镜头模组，其特征在于，包括基座、镜头座、用于支撑所述镜头座的支撑组件和用于驱动所述镜头座沿垂直于镜头光轴方向运动的若干组形状记忆合金线，所述镜头座通过所述支撑组件悬挂于所述基座内；每组所述形状记忆合金线包括固定于所述基座和所述镜头座其中之一的两个末端和位于两个所述末端之间的驱动端，所述基座和所述镜头座其中之另一上设有固定件，所述驱动端连接到所述固定件，所述固定件上设有防止所述驱动端从所述固定件上滑脱的挡片。
  2. 根据权利要求1所述的镜头模组，其特征在于，所述固定件包括与所述驱动端相贴合的贴合面，所述挡片包括安装到所述固定件的安装部和自所述安装部延伸并超出所述贴合面的遮挡部。
  3. 根据权利要求2所述的镜头模组，其特征在于，所述安装部与所述遮挡部一体成型。
  4. 根据权利要求2所述的镜头模组，其特征在于，所述遮挡部与所述贴合面之间设有夹角α，其中，0°＜α≤90°。
  5. 根据权利要求2所述的镜头模组，其特征在于，所述贴合面为弧形面。
  6. 根据权利要求2所述的镜头模组，其特征在于，所述挡片呈半圆形，所述挡片具有弧形侧面，且所述弧形侧面位于所述固定件之中心轴远离所述末端的一侧；或者，所述挡片位于所述固定件之中心轴远离所述末端的部位呈矩形，所述挡片具有间隔设于所述固定件之中心轴远离所述末端的一侧的长边侧面和两个分别从所述长边侧面两端朝所述末端所在侧延伸的短边侧面，定义所述长边侧面的长度为L，所述形状记忆合金线的两个所述末端之间的距离为D，其中，L/D≥1/5。
  7. 根据权利要求2至6任一项所述的镜头模组，其特征在于，所述固定件和所述安装部其中之一上设有卡孔，所述固定件和所述安装部其中之另一上设有凸柱，所述挡片通过所述卡孔与所述凸柱卡扣配合安装到所述固定件。
  8. 根据权利要求7所述的镜头模组，其特征在于，所述凸柱设于所述固定件上，所述凸柱之远离所述末端的固定面与所述贴合面齐平设置，所述固定件还包括本体，所述凸柱和所述本体一体成型。
  9. 根据权利要求8所述的镜头模组，其特征在于，所述形状记忆合金线的所述末端固定到所述基座；所述基座包括基板和固定在所述基板上的框体，所述基板和所述框体共同形成用于收容所述镜头座的收容空间；所述框体为方形，包括四个沿周向设置的侧板，所述形状记忆合金线的所述末端固定到所述侧板朝向所述基板的一端；所述固定件安装到所述镜头座，所述本体自所述镜头座朝向所述基板的方向延伸，所述贴合面设于所述本体的一侧。
  10. 根据权利要求9所述的镜头模组，其特征在于，每个所述侧板朝向所述基板的一端设有两个固定槽，所述镜头模组还包括多个导电件，每个导电件固定在一个所述固定槽内，每组所述形状记忆合金线的两个所述末端分别固定连接到固定于同一个所述侧板的两个所述导电件；所述基座还包括固定到基板朝向所述镜头座一侧的电路板，所述导电件与所述电路板电连接，所述挡片与所述电路板之间存在间隙。
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