CN210982881U

CN210982881U - SMA actuating mechanism, camera module and electronic equipment

Info

Publication number: CN210982881U
Application number: CN201922050058.8U
Authority: CN
Inventors: 刘述伦; 陈林; 耿新龙
Original assignee: Dongguan Yadeng Electronics Co Ltd
Current assignee: Guangdong haideya Technology Co.,Ltd.
Priority date: 2019-11-22
Filing date: 2019-11-22
Publication date: 2020-07-10
Anticipated expiration: 2029-11-22

Abstract

The utility model discloses a SMA actuating mechanism, camera module and electronic equipment. An SMA actuation mechanism comprising: the two first touch plates are conductors; one end of each of the two sections of SMA wires is electrically connected with the two first touch plates respectively; the driven piece, two sections SMA wires are established ties between two first touch boards and form the electricity and connect, the contained angle between two sections SMA wires is greater than zero, one end of two sections SMA wires intersects with driven piece respectively, two sections SMA wires are around driven piece symmetrical arrangement. Has the advantages that: the two sections of SMA wires are connected in series between the two first contact plates to form electric connection, so that the contraction of the two sections of SMA wires is synchronous, the circuit structure between the two sections of SMA wires is simplified, and the structure of the SMA actuating mechanism is compact. The utility model relates to an electronic equipment.

Description

SMA actuating mechanism, camera module and electronic equipment

Technical Field

The utility model relates to an electronic equipment, in particular to SMA actuating mechanism, camera module and electronic equipment.

Background

An actuator (activating device) is a driving mechanism commonly used in the electronic field, and can be used for driving a camera. SMA refers to shape memory alloy (shape memory alloy) which is a driving element in an actuator. SMA is a material composed of two or more metal elements having a Shape Memory Effect (SME) by thermoelastic and martensitic transformation and inversion thereof. SMA can be deformed at a lower temperature and can restore the shape before deformation after being electrified and heated, thereby realizing electrically-controlled contraction.

Insert Molding bases (Insert Molding bases) include a set of inserts and a body that is typically plastic, with the set of inserts typically being a different material than plastic. The injection mold body is typically formed by injection molding after the insert is formed. The insert group can be used as a framework of the injection mold body, and the structural strength of the insert molding base can be enhanced.

Camera modules provided with SMA actuation mechanisms typically also include a lens assembly with a plurality of lenses to achieve imaging functionality. The SMA actuation mechanism requires movement of the lens assembly from various different directions to effect adjustment of the position and orientation of the lens assembly.

The camera module can drive the lens assembly to focus and prevent shaking through the SMA actuating mechanism. The technical defects of the camera module provided with the SMA actuating mechanism in the prior art are as follows: the SMA actuation mechanism is complex in structure, resulting in a large occupied volume of the SMA actuation mechanism and high difficulty in manufacturing. In addition, in order to realize focusing and anti-shake of the camera module, a plurality of sets of SMA actuation mechanisms are generally required to be arranged in the camera module, which results in a larger occupied volume and a more obvious problem of higher manufacturing difficulty.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve one of the technical problem that exists among the prior art at least, provide a simple structure's SMA actuating mechanism, camera module and electronic equipment.

The technical scheme adopted for solving the technical problems is as follows:

an SMA actuation mechanism comprising: the two first touch plates are conductors; one end of each of the two sections of SMA wires is electrically connected with the two first touch plates respectively; the driven piece, two sections SMA wires are established ties between two first touch boards and form the electricity and connect, the contained angle between two sections SMA wires is greater than zero, one end of two sections SMA wires intersects with driven piece respectively, two sections SMA wires are around driven piece symmetrical arrangement.

The SMA actuating mechanism at least has the following beneficial effects:

the included angle between the two sections of SMA wires is larger than zero, one end of each section of SMA wire is intersected with the driven piece, and the two sections of SMA wires are symmetrically arranged relative to the driven piece, so that the SMA wires can drive the driven piece to move through contraction; the two sections of SMA wires are connected in series between the two first contact plates to form electric connection, so that the contraction of the two sections of SMA wires is synchronous, the circuit structure between the two sections of SMA wires is simplified, and the structure of the SMA actuating mechanism is compact.

In a possible embodiment of the present invention, the two sections of SMA wires are integrated, and the SMA wires are bent at the intersection with the driven member to form two sections of SMA wires with an included angle greater than zero. The two lengths of SMA wire are integral, which facilitates further simplifying the overall structure of the SMA actuation mechanism, making the structure of the SMA actuation mechanism more compact and easier to manufacture.

In one possible embodiment of the present invention, the two SMA wires are separated, and the driven member is a conductor, and the driven member electrically connects the two SMA wires. The two sections of SMA wires are arranged in a split manner, so that the lengths of the two sections of SMA wires can be respectively adjusted, the two sections of SMA wires can be respectively and independently calibrated, and the motion precision of the SMA actuating mechanism can be favorably improved.

A camera module comprising an SMA actuation mechanism.

In a possible embodiment of the present invention, the camera module further includes a lens assembly, the lens assembly includes a frame body, the SMA actuation mechanism includes at least one first SMA actuation mechanism and at least one second SMA actuation mechanism, the first SMA actuation mechanism and the second SMA actuation mechanism drive the driven member in opposite directions, and the driven member of the first SMA actuation mechanism and the second SMA actuation mechanism is respectively fixedly connected to the frame body. The first SMA actuating mechanism and the second SMA actuating mechanism can drive the driven piece to the opposite directions, so that the inclination angle adjustment and the position adjustment of the lens frame body can be realized, and the camera module can be favorably expanded in focusing and anti-shaking functions.

In a possible embodiment of the present invention, the number of the first SMA actuation mechanisms is two, the number of the second SMA actuation mechanisms is two, the two first SMA actuation mechanisms and the two second SMA actuation mechanisms are respectively disposed around the mirror frame body, the two first SMA actuation mechanisms are symmetrically disposed with respect to the mirror frame body, and the two second SMA actuation mechanisms are symmetrically disposed with respect to the mirror frame body. The two first SMA actuating mechanisms and the two second SMA actuating mechanisms are respectively and symmetrically arranged at two sides of the mirror bracket body, so that the functions of adjusting the inclination angle and adjusting the position of the camera module are further expanded, and the functions of focusing and anti-shaking of the camera module are further expanded.

In a possible embodiment of the present invention, the camera module further includes a base assembly, the lens assembly further includes a first spring, the lens frame body is fixedly connected to the first spring, a plurality of elastic arms are disposed between the first spring and the base assembly, and one end of each elastic arm is fixedly connected to the base assembly and elastically hangs the lens frame body on the base assembly; the base assembly comprises an insert group and an injection mold body, the insert group comprises a first insert, a second insert, a third insert, a fourth insert, a fifth insert and a sixth insert, and the injection mold body is wrapped outside the insert group through insert molding; the first insert, the second insert, the third insert and the fourth insert are respectively provided with a second contact plate, the second contact plate extends out of the injection mold body, the first insert, the second insert, the third insert and the fourth insert are respectively provided with a first control end, a second control end, a third control end and a fourth control end which extend out of the injection mold body, the fifth insert and the sixth insert are respectively provided with a third contact plate which extends out of the injection mold body, the fifth insert and/or the sixth insert are/is provided with a common end which extends out of the injection mold body, the fifth insert and the sixth insert are connected and form the same common end, one of the first contact plates on each SMA actuating mechanism is respectively contacted with the first insert, the second insert, the third insert and the second contact plate on the fourth insert to form electric connection, the other one of the first contact plates on each SMA actuating mechanism is respectively contacted with the third contact plate on the fifth insert or the sixth insert to form electric connection, thereby electrically connecting each SMA actuation mechanism between the common terminal and the first control terminal, the second control terminal, the third control terminal or the fourth control terminal. The common end, the first control end, the second control end, the third control end and the fourth control end enable each SMA actuating mechanism to be independently controlled respectively, and the focusing and anti-shaking functions of the camera module can be expanded; the injection mold body is wrapped outside the insert group through insert molding, so that the structural strength of the base assembly is enhanced, circuits connected with the SMA actuating mechanisms can be wrapped in the injection mold body, and the camera module is compact in structure.

The utility model discloses an in a possible embodiment, still be equipped with the fourth touch panel on fifth inserts and the sixth inserts, the fourth touch panel stretches out outside the injection molding body, first spring respectively with the fourth touch panel contact on fifth inserts and the sixth inserts, first spring is the conductor. The first spring can form electric connection for the fifth insert and the sixth insert, so that the structure of the camera module can be more compact.

The utility model discloses an in a possible embodiment, still be equipped with the fourth touch panel on fifth inserts and the sixth inserts, the fourth touch panel stretches out outside the injection molding body, still is equipped with the connecting piece outside the injection molding body, the both ends of connecting piece respectively with the fourth touch panel contact on fifth inserts and the sixth inserts and form the electricity and be connected. The connecting piece is arranged outside the injection mold body, so that the overall structure of the insert group is simplified, and the fifth insert and the sixth insert which are originally independent from each other can form the same common end.

An electronic device includes an SMA actuation mechanism.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of a camera module according to embodiment 1 of the present invention;

fig. 2 is an exploded schematic view of a camera module according to embodiment 1 of the present invention;

fig. 3 is a schematic diagram of the relative positions of the first SMA actuation mechanism and the second SMA actuation mechanism according to embodiment 1 of the present invention;

fig. 4 is a schematic structural view of an insert group according to embodiment 1 of the present invention;

fig. 5 is a schematic structural view of a base assembly according to embodiment 1 of the present invention;

fig. 6 is a schematic structural view of a lens assembly according to embodiment 1 of the present invention;

fig. 7 is a schematic circuit diagram of an SMA actuation mechanism according to embodiment 1 of the present invention;

fig. 8 is a schematic operation diagram of a first SMA actuation mechanism according to embodiment 1 of the present invention;

fig. 9 is a schematic operation diagram of a second SMA actuation mechanism according to embodiment 1 of the present invention;

fig. 10 is a schematic structural view of a first SMA actuation mechanism according to embodiment 2 of the present invention;

fig. 11 is a schematic structural view of a second SMA actuation mechanism according to embodiment 2 of the present invention;

reference numerals:

the SMA actuating mechanism 1, the SMA wire 110, the first touch plate 120 and the driven piece 130;

the lens assembly 2, the lens frame body 210, the elastic arm 220, the first spring 230, the second spring 240 and the positioning column 211;

the base assembly 3, the injection molded body 300d, the insert set 300, the first insert 310, the second insert 320, the third insert 330, the fourth insert 340, the fifth insert 350, the sixth insert 360, the first control terminal 311, the second control terminal 321, the third control terminal 331, the fourth control terminal 341, the common terminal 361, the second contact plate 300a, the third contact plate 300b, the fourth contact plate 300c, and the connecting member 370.

Detailed Description

Example 1:

this section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1 to 9, a camera module comprises an SMA actuation mechanism 1.

In this embodiment, the camera module further includes a lens assembly 2, the lens assembly 2 includes a frame body 210, the SMA actuation mechanism 1 includes at least one first SMA actuation mechanism and at least one second SMA actuation mechanism, the first SMA actuation mechanism and the second SMA actuation mechanism drive the driven member 130 in opposite directions, and the driven members 130 of the first SMA actuation mechanism and the second SMA actuation mechanism are respectively and fixedly connected to the frame body 210. The first SMA actuating mechanism and the second SMA actuating mechanism can drive the driven member 130 in opposite directions, so that the tilt angle and the position of the frame body 210 can be adjusted, and the camera module can be expanded in focusing and anti-shake functions.

Regarding the frame body 210, the frame body 210 has a ring shape, and a plurality of lenses can be inserted into the frame body 210, so that an imaging function can be realized. The driven member 130 is fixedly connected to the outside of the frame body 210.

An SMA actuation mechanism 1 comprising: two first touch pads 120, the first touch pads 120 being conductors; one end of each of the two sections of SMA wires 110 is electrically connected to the two first contact plates 120; the driven piece 130, two lengths of SMA wires 110 are connected in series between the two first contact plates 120 to form an electrical connection, the included angle between the two lengths of SMA wires 110 is greater than zero, one end of each of the two lengths of SMA wires 110 intersects with the driven piece 130, and the two lengths of SMA wires 110 are symmetrically arranged about the driven piece 130.

The SMA actuation mechanism 1 described above has at least the following beneficial effects:

the included angle between the two sections of SMA wires 110 is greater than zero, one end of each of the two sections of SMA wires 110 intersects with the driven part 130, and the two sections of SMA wires 110 are symmetrically arranged with respect to the driven part 130, so that the SMA wires 110 can drive the driven part 130 to move by contraction; the two lengths of SMA wires 110 are electrically connected in series between the two first contact plates 120, so that the contraction of the two lengths of SMA wires 110 is synchronous, and the circuit structure between the two lengths of SMA wires 110 is simplified, so that the SMA actuation mechanism 1 has a compact structure.

As for the first contact plate 120, the first contact plate 120 is a metal plate.

With respect to SMA wire 110, SMA wire 110 refers to a shape memory alloy wire. The SMA wire 110 is retractable when it is heated by power-on, and is extendable and restored to its original length after power-off and temperature reduction. Thus, the SMA wire 110 can achieve electrically controlled contraction. The two sections of SMA wires 110 are symmetrically arranged and have an included angle greater than zero, and in this embodiment, are in a V shape. As shown in fig. 8 and 9, the contraction motions of the two lengths of SMA wire 110 may be combined into a linear motion of the driven member 130.

Regarding the driven member 130, the driven member 130 is fixedly connected to the frame body 210, and when the driven member 130 is pulled by the SMA wire 110, the frame body 210 is driven to move, so as to adjust the angle and position of the frame body 210.

Regarding the frame body 210, two positioning posts 211 are respectively disposed on four sides of the frame body 210, and the number of the positioning posts 211 on each side is two. The driven member 130 is provided with two positioning holes, and the positioning holes of the driven member 130 and the two positioning posts 211 of the lens frame 210 are mutually embedded and positioned and fixed by glue.

In this embodiment, the two lengths of SMA wire 110 are integral, and the SMA wire 110 bends at the intersection with the driven member 130 and forms the two lengths of SMA wire 110 with an included angle greater than zero. The two lengths of SMA wire 110 are integral and are advantageous in further simplifying the overall structure of the SMA actuation mechanism 1, thereby making the structure of the SMA actuation mechanism 1 more compact and easier to manufacture.

Regarding the SMA wire 110, both ends of the SMA wire 110 intersect with the two first contact plates 120 to form electrical connections, and the SMA wire 110 is bent at the driven member 130 to form a V-shape.

In this embodiment, the number of the first SMA actuation mechanisms is two, the number of the second SMA actuation mechanisms is two, the two first SMA actuation mechanisms and the two second SMA actuation mechanisms are respectively disposed around the mirror frame body 210, the two first SMA actuation mechanisms are symmetrically disposed with respect to the mirror frame body 210, and the two second SMA actuation mechanisms are symmetrically disposed with respect to the mirror frame body 210. The two first SMA actuating mechanisms and the two second SMA actuating mechanisms are respectively and symmetrically arranged at two sides of the mirror bracket body 210, which is beneficial to further expanding the functions of tilt angle adjustment and position adjustment of the camera module and further expanding the functions of focusing and anti-shake of the camera module.

In this embodiment, the camera module further includes a base assembly 3, the lens assembly 2 further includes a first spring 230, the lens frame body 210 is fixedly connected to the first spring 230, a plurality of elastic arms 220 are disposed between the first spring 230 and the base assembly 3, and one end of each elastic arm 220 is fixedly connected to the base assembly 3 and elastically hangs the lens frame body 210 on the base assembly 3; the base assembly 3 comprises an insert set 300 and an injection mold body 300d, wherein the insert set 300 comprises a first insert 310, a second insert 320, a third insert 330, a fourth insert 340, a fifth insert 350 and a sixth insert 360, and the injection mold body 300d is wrapped outside the insert set 300 through insert molding; the first insert 310, the second insert 320, the third insert 330 and the fourth insert 340 are respectively provided with a second contact plate 300a, the second contact plate 300a extends out of the injection mold body 300d, the first insert 310, the second insert 320, the third insert 330 and the fourth insert 340 are respectively provided with a first control end 311, a second control end 321, a third control end 331 and a fourth control end 341 which extend out of the injection mold body 300d, the fifth insert 350 and the sixth insert 360 are respectively provided with a third contact plate 300b which extends out of the injection mold body 300d, the fifth insert 350 and/or the sixth insert 360 are/is provided with a common end 361 which extends out of the injection mold body 300d, the fifth insert 350 is connected with the sixth insert 360 and forms the same common end 361, one of the first contact plates 120 on each SMA actuating mechanism 1 is respectively contacted with the second contact plates 300a on the first insert 310, the second insert 320, the third insert 330 and the fourth insert 340 to form an electrical connection, the other first contact plate 120 in each SMA actuation mechanism 1 is in contact with and forms an electrical connection with the third contact plate 300b on the fifth insert 350 or the sixth insert 360, respectively, so that each SMA actuation mechanism 1 forms an electrical connection between the common terminal 361 and the first control terminal 311, the second control terminal 321, the third control terminal 331 or the fourth control terminal 341. The common terminal 361, the first control terminal 311, the second control terminal 321, the third control terminal 331 and the fourth control terminal 341 enable each SMA actuating mechanism 1 to be independently controlled, which is beneficial to expanding the focusing and anti-shake functions of the camera module; the injection mold body 300d is wrapped outside the insert assembly 300 through insert molding, which is beneficial to enhancing the structural strength of the base assembly 3, and the circuits connected with the SMA actuating mechanisms 1 can be wrapped in the injection mold body 300d, which is beneficial to the compact structure of the camera module.

Regarding the injection mold body 300d, the material of the injection mold body 300d is plastic, so as to facilitate molding and have insulating properties.

As for the touch panels, the first touch panel 120, the second touch panel 300a, and the third touch panel 300b are respectively disposed at four corners of the base assembly 3, which is advantageous for making the structure of the camera module more compact.

Regarding the control terminals, the first control terminal 311, the second control terminal 321, the third control terminal 331, the fourth control terminal 341 and the common terminal 361 are disposed at one side of the base assembly 3, which is beneficial to facilitate wiring.

Regarding the lens assembly 2, the lens assembly 2 further includes a second spring 240, the first spring 230 and the second spring 240 are respectively attached to two sides of the frame body 210, four elastic arms 220 are respectively disposed around the first spring 230 and the second spring 240, one end of each elastic arm 220 is fixedly connected to the base assembly 3, and the elastic arms 220 can elastically deform to provide elastic suspension for the frame body 210, so that the frame body 210 can be in a suspended state, and the frame body 210 is easy to drive.

With respect to the first spring and the second spring, the first spring and the second spring constitute a suspension system of the lens assembly. The first spring and the second spring herein do not refer to a coil spring, a spiral spring or a plate spring which are common in the mechanical field, but are special springs for hanging the lens assembly. The first spring and the second spring are in a sheet shape and are respectively attached to the mirror frame body from two sides of the lens assembly.

In this embodiment, the fifth insert 350 and the sixth insert 360 are further provided with a fourth contact plate 300c, the fourth contact plate 300c extends out of the injection mold body 300d, the first spring 230 is in contact with the fourth contact plate 300c on the fifth insert 350 and the sixth insert 360, respectively, and the first spring 230 is a conductor. The first spring 230 can form an electrical connection for the fifth insert 350 and the sixth insert 360, which can make the camera module more compact.

With respect to the first spring, the second spring, and the fourth contact pads, each of the fourth contact pads may form a common terminal by contacting the first spring. Each fourth contact pad may also form a common terminal by contacting the second spring. Each of the fourth contact pads may also form a common terminal by simultaneously contacting the first spring and the second spring.

Regarding the first spring 230, the first spring 230 is made of metal. The first spring 230 contacts the two fourth contact plates 300c such that the fifth insert 350 and the sixth insert 360 form the same common end 361.

In this embodiment, the fifth insert 350 and the sixth insert 360 are further provided with a fourth contact plate 300c, the fourth contact plate 300c extends out of the injection mold body 300d, the injection mold body 300d is further provided with a connecting member 370, and two ends of the connecting member 370 are respectively contacted with and electrically connected to the fourth contact plates 300c of the fifth insert 350 and the sixth insert 360. The connecting member 370 is disposed outside the injection mold body 300d, which is beneficial to simplify the overall structure of the insert set 300, so that the fifth insert 350 and the sixth insert 360, which are originally independent from each other, can form the same common end 361.

The SMA actuation mechanism 1 of the present solution can be used for various electronic devices.

Example 2:

referring to fig. 10 and 11, the present embodiment is different from embodiment 1 in that: the two lengths of SMA wire 110 are separate pieces and the driven member 130 is a conductor, the driven member 130 electrically connecting the separate two lengths of SMA wire 110. The two sections of SMA wires 110 are arranged in a split manner, so that the lengths of the two sections of SMA wires 110 can be respectively adjusted, and the two sections of SMA wires 110 can be respectively and independently calibrated, which is beneficial to improving the motion precision of the SMA actuating mechanism.

With respect to the SMA wire 110, the SMA wire 110 and the first contact plate 120 may be fixed by welding, and the SMA wire 110 and the driven member 130 may also be fixed by welding, so that an electrical connection may be formed between the SMA wire 110 and the first contact plate 120 and the driven member 130.

Claims

An SMA actuation mechanism, comprising:

the two first touch panels are conductors;

one end of each of the two sections of SMA wires is electrically connected with the two first touch plates respectively;

the two sections of SMA wires are connected in series between the two first touch plates to form electric connection, the included angle between the two sections of SMA wires is larger than zero, one ends of the two sections of SMA wires are respectively intersected with the driven piece, and the two sections of SMA wires are symmetrically arranged around the driven piece.
2. The SMA actuation mechanism of claim 1, wherein: the two sections of the SMA wires are integrated, and the SMA wires are bent at the intersection of the SMA wires and the driven piece to form the two sections of the SMA wires with the included angle larger than zero.
3. The SMA actuation mechanism of claim 2, wherein: the two sections of SMA wires are separated, the driven piece is a conductor, and the driven piece enables the two sections of SMA wires separated to form electric connection.
4. Camera module, its characterized in that: comprising an SMA actuation mechanism of any one of claims 1 to 3.
5. The camera module of claim 4, wherein: still include the lens subassembly, the lens subassembly includes the mirror holder body, SMA actuating mechanism includes at least one first SMA actuating mechanism and/or at least one second SMA actuating mechanism, first SMA actuating mechanism with second SMA actuating mechanism drives to opposite direction driven piece.
6. The camera module according to claim 5, characterized in that one of the following conditions is satisfied:

the camera module comprises two first SMA actuation mechanisms;

or the camera module comprises two of the second SMA actuation mechanisms;

or the camera module comprises four of the first SMA actuation mechanisms;

or the camera module comprises four of the second SMA actuation mechanisms;

or the camera module comprises two of the first SMA actuation mechanisms and two of the second SMA actuation mechanisms.
7. The camera module of claim 6, wherein: the lens component further comprises a base component, the lens component further comprises a first spring, the lens frame body is fixedly connected with the first spring, a plurality of elastic arms are arranged between the first spring and the base component, and one ends of the elastic arms are fixedly connected with the base component and enable the lens frame body to be elastically hung on the base component; the base assembly comprises an insert group and an injection mold body, the insert group comprises a first insert, a second insert, a third insert, a fourth insert, a fifth insert and a sixth insert, and the injection mold body is wrapped outside the insert group through insert molding; the first insert, the second insert, the third insert and the fourth insert are respectively provided with a second touch panel, the second touch panel extends out of the injection mold body, the first insert, the second insert, the third insert and the fourth insert are respectively provided with a first control end, a second control end, a third control end and a fourth control end which extend out of the injection mold body, the fifth insert and the sixth insert are respectively provided with a third touch panel which extends out of the injection mold body, a common end which extends out of the injection mold body is arranged on the fifth insert and/or the sixth insert, the fifth insert and the sixth insert are connected to form the same common end, one of the first touch panels on the SMA actuating mechanism is respectively contacted with the first insert, the second insert, the third insert and the second touch panel on the fourth insert to form an electric connection, the other first contact plate in each SMA actuation mechanism is in contact with and electrically connected with the third contact plate on the fifth insert or the sixth insert, respectively, so that each SMA actuation mechanism is electrically connected between the common end and the first control end, the second control end, the third control end or the fourth control end.
8. The camera module of claim 7, wherein:

the fifth insert and the sixth insert are further provided with fourth contact plates, the fourth contact plates extend out of the injection mold body, and the fourth contact plates between the fifth insert and the sixth insert meet one of the following relations:

the first spring is respectively contacted with the fourth touch plates on the fifth insert and the sixth insert, and the first spring is a conductor;

or the injection mold body is also provided with a connecting piece, and two ends of the connecting piece are respectively contacted with the fifth insert and the fourth contact plate on the sixth insert to form electric connection.
9. The camera module of claim 8, wherein: the camera module further comprises a second spring, the second spring is fixedly connected with the mirror bracket body, the second spring is a conductor, and one of the following relations is satisfied among the fourth touch plate, the first spring and the second spring:

the fourth contact pads on the fifth and sixth inserts form the common end by contacting the second spring;

or the fourth contact pads on the fifth and sixth inserts form the common terminal by simultaneously contacting the first and second springs.
10. An electronic device, characterized in that: comprising an SMA actuation mechanism according to any one of claims 1 to 3.