阅读说明：本技术 Sma致动装置、摄像模块和电子设备 (SMA actuating device, camera module and electronic equipment ) 是由 刘述伦 计树标 陈林 于 2019-11-22 设计创作，主要内容包括：本发明公开了SMA致动装置、摄像模块和电子设备。SMA致动装置,包括：底座组件,底座组件包括嵌件组和注模体,注模体包裹在嵌件组外,嵌件组包括若干嵌件,各个嵌件镶嵌在注模体内,嵌件上设有第一触板,第一触板伸出注模体外,且不同的嵌件分别延伸到注模体外并分别形成若干控制端和若干公共端；若干致动组件,致动组件包括若干致动体和SMA线,致动体包括第二触板和活动部,SMA线可通过收缩带动活动部运动,SMA线通过第二触板与第一触板形成电连接,各个第二触板与各个第一触板接触形成电连接。有益效果：嵌件组可充当为SMA线通电的电路,使SMA致动装置结构紧凑。本发明涉及电子领域中的致动装置。(The invention discloses an SMA actuating device, a camera module and an electronic device. An SMA actuation apparatus comprising: the base assembly comprises an insert group and an injection molding body, the injection molding body is wrapped outside the insert group, the insert group comprises a plurality of inserts, each insert is embedded in the injection molding body, a first contact plate is arranged on each insert, the first contact plates extend out of the injection molding body, and different inserts respectively extend out of the injection molding body and respectively form a plurality of control ends and a plurality of public ends; the actuating assembly comprises a plurality of actuating bodies and SMA wires, each actuating body comprises a second contact plate and a movable part, the SMA wires can drive the movable parts to move through contraction, the SMA wires are electrically connected with the first contact plates through the second contact plates, and each second contact plate is electrically connected with each first contact plate in a contact mode. Has the advantages that: the insert set can be used as a circuit for electrifying the SMA wire, so that the SMA actuating device is compact in structure. The present invention relates to actuation devices in the field of electronics.)

An SMA actuation apparatus, comprising:

the base assembly comprises an insert group and an injection molding body, the injection molding body is wrapped outside the insert group, the insert group comprises a plurality of inserts, each insert is embedded in the injection molding body, a first contact plate is arranged on each insert, the first contact plates extend out of the injection molding body, and different inserts respectively extend out of the injection molding body and respectively form a plurality of control ends and a plurality of public ends;

the actuating body comprises second touch plates and a movable part, the SMA wire can drive the movable part to move through contraction, the SMA wire is electrically connected with the first touch plates through the second touch plates, and each second touch plate is electrically connected with each first touch plate in a contact mode.

2. Camera module, its characterized in that: the camera module comprises the actuating device of claim 1, and further comprises a lens assembly, the lens assembly comprises a lens frame body, the lens frame body is movably connected with the base assembly, the movable part is a connecting rod, one end of the connecting rod is hinged to the lens frame body, and the SMA wire pulls the connecting rod to move and drive the lens frame body to move through contraction.

3. The camera module of claim 2, wherein: the second touch panel with still be equipped with first elastic arm between the connecting rod, the second touch panel first elastic arm with the connecting rod is conductor and integrated into one piece, SMA wire accessible shrink drives the connecting rod is in swing on the second touch panel and make first elastic arm takes place elastic deformation.

4. A camera module according to claim 3, characterized in that: each actuating assembly comprises two actuating bodies which are symmetrically arranged, the inserts comprise a first insert, a second insert, a third insert, a fourth insert, a fifth insert, a sixth insert, a seventh insert and an eighth insert, the control ends comprise a first control end, a second control end, a third control end and a fourth control end, the first control end is arranged on the first insert, the second control end is arranged on the second insert, the third control end is arranged on the third insert, the fourth control end is arranged on the fourth insert, the common ends comprise a first common end, the fifth insert, the sixth insert and the first common end are electrically connected, and the first insert, the second insert, the third insert and the fourth insert are respectively and electrically connected with one of the second contact plates of each actuating assembly through the first contact plates, the fifth insert and the sixth insert are electrically connected with one of the second contact plates of each actuating assembly through the first contact plate respectively.

5. The camera module of claim 4, wherein: the lens component further comprises a first spring, the first spring is fixedly connected with the lens frame body, a plurality of second elastic arms are arranged around the first spring and between the base component, the second elastic arms can elastically deform to suspend the lens frame body on the base component, a third touch plate is further arranged on the fifth insert and the sixth insert respectively, penetrates out of the injection mold body and is in contact with the first spring respectively, the first spring is a conductor, and the fifth insert and the sixth insert are electrically connected through the first spring.

6. The camera module of claim 5, wherein: the lens assembly further comprises a second spring, the second spring is fixedly connected with the frame body, and the first spring, the second spring and the third touch plate satisfy one of the following relations:

each of the third contact pads forms the common terminal by being in contact with the second spring;

or each of the third contact pads forms the common terminal by simultaneously contacting the first spring and the second spring.

7. The camera module of claim 6, wherein: the third touch plate protrudes from the fifth insert and the sixth insert to the direction of the first spring, and one surface of the third touch plate is exposed on the surface of the injection mold body.

8. The camera module of claim 7, wherein: the common end further comprises a second common end, the second common end is arranged on the fifth insert, and the second common end extends out of the injection mold body.

9. The camera module of claim 4, wherein: the fifth insert and the sixth insert are respectively provided with a fourth touch panel, a connecting piece is further arranged between the fifth insert and the sixth insert, the connecting piece is a conductor, the fourth touch panel respectively protrudes from the fifth insert and the sixth insert to the surface of the injection mold body, and two ends of the connecting piece are respectively contacted with the fourth touch panels on the fifth insert and the sixth insert.

10. An electronic device, characterized in that: comprising an SMA actuation apparatus according to claim 1.

Technical Field

The present invention relates to an actuator device in the electronic field, and more particularly, to an SMA actuator device, a camera module, and an electronic apparatus.

Background

Actuating devices (actuating devices) are drive mechanisms that are commonly used in the electronics field and can be used to drive cameras. 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 devices typically also include a lens assembly on which a plurality of lenses are provided. The SMA actuation apparatus needs to drive the lens assembly to move from various directions in order to achieve adjustment of the position and orientation of the lens assembly.

Disclosure of Invention

The invention aims to solve at least one technical problem in the prior art and provides an SMA actuating device, a camera module and an electronic device with compact structure.

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

an SMA actuation apparatus comprising: the base assembly comprises an insert group and an injection molding body, the injection molding body is wrapped outside the insert group, the insert group comprises a plurality of inserts, each insert is embedded in the injection molding body, a first contact plate is arranged on each insert, the first contact plates extend out of the injection molding body, and different inserts respectively extend out of the injection molding body and respectively form a plurality of control ends and a plurality of public ends; the actuating assembly comprises a plurality of actuating bodies and SMA wires, each actuating body comprises a second contact plate and a movable part, the SMA wires can drive the movable parts to move through contraction, the SMA wires are electrically connected with the first contact plates through the second contact plates, and each second contact plate is electrically connected with each first contact plate in a contact mode.

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

the SMA wire can drive the movable part to move, thereby outputting power. The embedded component group can be used as a circuit for electrifying the SMA wire in the injection mold body, so that the use of a conducting wire can be reduced, the structure of the SMA actuating device is compact, the manufacturing cost of the SMA actuating device is favorably reduced, and the structural strength of the base component can be enhanced.

The camera module comprises an SMA actuating device and a lens assembly; the lens component comprises a lens frame body, the lens frame body is movably connected with the base component, the movable part is a connecting rod, one end of the connecting rod is hinged with the lens frame body, and the SMA wire pulls the connecting rod to move through contraction and drives the lens frame body to move. The lens can be installed in the mirror bracket body, and the SMA wire can drive the mirror bracket body through the connecting rod, so that the focusing or the anti-shaking of the camera module can be realized.

In a possible embodiment of the present invention, a first elastic arm is further disposed between the second touch panel and the connecting rod, the second touch panel, the first elastic arm and the connecting rod are conductors and are integrally formed, and the SMA wire can drive the connecting rod to swing on the second touch panel by contraction and elastically deform the first elastic arm. The first elastic arm enables the connecting rod to elastically swing on the second touch plate, so that the connecting rod can elastically reset; the first elastic arm, the connecting rod and the second touch plate are integrally formed, and the structure of the actuating body is simplified.

In one possible embodiment of the invention, the number of the actuating assemblies is four, each actuating assembly comprises two actuating bodies which are symmetrically arranged, the inserts comprise a first insert, a second insert, a third insert, a fourth insert, a fifth insert and a sixth insert, the control end comprises a first control end, a second control end, a third control end and a fourth control end, the first control end is arranged on the first insert, the second control end is arranged on the second insert, the third control end is arranged on the third insert, the fourth control end is arranged on the fourth insert, the common end comprises a first common end, the fifth insert, the sixth insert and the first common end are electrically connected, the first insert, the second insert, the third insert and the fourth insert are respectively and electrically connected with one of the second touch panels of each actuating assembly through the first touch panel, and the fifth insert and the sixth insert are respectively and electrically connected with one of the second touch panels of each actuating assembly through the first touch panel. The public end and each control end can be respectively for four SMA wires circular telegrams, make four actuating assemblies can realize independent control, each inserts is buried underground in the injection molding body, can avoid the external wire jumper of injection molding, makes camera module compact structure, makes base subassembly structural strength high, avoids the external wire jumper of injection molding still to be favorable to reducing camera module's overall manufacturing cost.

In a possible embodiment of the present invention, the lens assembly further includes a first spring, the first spring is fixedly connected to the lens holder, a plurality of second elastic arms are disposed around the first spring and between the base assembly, each of the second elastic arms elastically and deformably suspends the lens holder on the base assembly, third touch plates are further disposed on the fifth insert and the sixth insert, respectively, the third touch plates penetrate through the injection mold body and are in contact with the first spring, the first spring is a conductor, and the fifth insert and the sixth insert are electrically connected through the first spring. The first spring enables the lens assembly to form a suspension structure capable of elastically reciprocating, and enables the fifth insert and the sixth insert to form electric connection, so that the electric connection structure between the fifth insert and the sixth insert can be further simplified, and the camera module is beneficial to enabling the structure to be compact.

In a possible embodiment of the invention, the third contact plate projects from the fifth insert and the sixth insert, respectively, in the direction of the first spring, one side of the third contact plate being exposed on the surface of the injection-molded body. The third contact plate protrudes from the fifth and sixth inserts in the direction of the first spring and is exposed on the surface of the injection-molded body, so that the welding between the first spring and the third contact plate is easily performed.

In a possible embodiment of the invention, the common end further comprises a second common end, the second common end being provided on the fifth insert, the second common end extending outside the injection mold body. The second common terminal expands the number of common terminals, and makes the connection between the common terminals and the external circuit easier to realize.

In a possible embodiment of the present invention, the fifth insert and the sixth insert are further provided with a fourth contact plate respectively, a connecting member is further provided between the fifth insert and the sixth insert, the connecting member is a conductor, the fourth contact plate respectively protrudes from the fifth insert and the sixth insert to the surface of the injection mold body, and two ends of the connecting member are in contact with the fourth contact plates on the fifth insert and the sixth insert respectively. The connecting piece makes the fifth insert and the sixth insert form electric connection through the fourth touch panel, so that wire jumping between the fifth insert and the sixth insert can be avoided, the overall structure of the insert group is simplified, and the base assembly is compact in structure.

An electronic device comprising an SMA actuation apparatus.

An electronic device includes a camera module.

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 diagram 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 structural diagram of an insert group according to embodiment 1 of the present invention;

FIG. 4 is a schematic view showing the arrangement of an actuating assembly according to embodiment 1 of the present invention;

FIG. 5 is a schematic view showing the arrangement of the first spring and the second spring in embodiment 1 of the present invention;

fig. 6 is a schematic circuit structure diagram according to embodiment 1 of the present invention;

FIG. 7 is a schematic structural view of a base assembly according to embodiment 1 of the present invention;

fig. 8 is a schematic structural diagram of a lens assembly according to embodiment 1 of the present invention;

fig. 9 is a schematic circuit diagram according to embodiment 2 of the present invention;

FIG. 10 is a schematic circuit diagram according to embodiment 3 of the present invention;

FIG. 11 is a schematic view showing the arrangement of the connecting members according to embodiment 3 of the present invention;

reference numerals:

the base assembly 1, the insert set 110, the injection molded body 120, the first insert 111, the second insert 112, the third insert 113, the fourth insert 114, the fifth insert 115, the sixth insert 116, the first control end 110a, the second control end 110b, the third control end 110c, the fourth control end 110d, the first common end 110e, the second common end 110f, the first contact plate 110g, the third contact plate 110h, the fourth contact plate 110i, and the connecting member 110 j;

the actuating assembly 2, the actuating body 210, the SMA wire 220, the second contact plate 211, the first elastic arm 212, the link 213;

lens assembly 3, first spring 310, second spring 320, mirror frame body 330, second elastic arm 340.

Detailed Description