CN214035983U

CN214035983U - Actuator and camera module

Info

Publication number: CN214035983U
Application number: CN202022615679.9U
Authority: CN
Inventors: 刘述伦; 夏念明; 饶建亮
Original assignee: Guangdong Haideya Technology Co ltd
Current assignee: Henan Haoze Electronics Co ltd Kunshan Branch
Priority date: 2020-11-12
Filing date: 2020-11-12
Publication date: 2021-08-24
Anticipated expiration: 2030-11-12

Abstract

The utility model discloses an actuator and camera module, include: the substrate is provided with a power supply circuit; the rotary actuating structure is arranged on the substrate and comprises a rotating plate and a rotary driving unit, a through hole is formed in the middle of the rotating plate, and the rotary driving unit is electrically connected with the power supply circuit and used for driving the rotating plate to rotate; the first conductive plate is arranged on the rotating plate; one end of each elastic electric connecting piece is connected with the corresponding port of the power supply circuit, and the other end of each elastic electric connecting piece penetrates through the through hole to be connected with the corresponding first conductive unit; the second conductive plates are arranged on the first conductive plates, and each second conductive unit is connected with the corresponding first conductive unit; the translation actuating structure is arranged on the second conductive plate and comprises a plurality of swing arm structures, and each swing arm structure is connected with the corresponding second conductive unit; the movable substrate is disposed on the translational actuating structure. Use the utility model discloses, can make the actuator realize the actuating effect of different modes comparatively easily.

Description

Actuator and camera module

Technical Field

The utility model relates to a camera device's technical field, in particular to actuator and camera module.

Background

An actuating device (actuating device) is a driving mechanism commonly used in the electronic field, and can be used for driving a lens unit to achieve anti-shake or focusing. 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 phase transitions and inversions thereof. SMA can deform at a lower temperature, can contract and deform after being electrified and heated, and can recover to the shape before deformation after being cooled, thereby realizing electrically-controlled contraction. At present, the actuating structure on the actuating device usually adopts a common wire or a printed circuit for power connection, so that the actuating structure is powered on to generate power, and power in the opposite direction is provided for the vibration direction of the lens unit, thereby realizing the anti-shake function for the lens unit. However, such a power supply method is not favorable for realizing different actuating forms of the actuating device because the circuit is rigid or the circuit layout is complicated.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides an actuator can make the actuator realize the actuating effect of different modes comparatively easily.

The utility model also provides a camera module of having above-mentioned actuator.

An actuator according to an embodiment of the first aspect of the invention comprises:

the power supply circuit comprises a substrate, wherein a power supply circuit is arranged on the substrate;

the rotary actuating structure is arranged on the substrate and comprises a rotating plate and a rotary driving unit, a through hole is formed in the middle of the rotating plate, and the rotary driving unit is electrically connected with the power supply circuit and used for driving the rotating plate to rotate;

a first conductive plate disposed on the rotating plate, the first conductive plate including a plurality of first conductive units;

a plurality of elastic electric connecting pieces, wherein one end of each elastic electric connecting piece is connected with a corresponding port of the power supply circuit, and the other end of each elastic electric connecting piece penetrates through the through hole to be connected with the corresponding first conductive unit;

a second conductive plate disposed on the first conductive plate, the second conductive plate including a plurality of second conductive units, each of the second conductive units being connected to a corresponding one of the first conductive units;

a translational actuating structure disposed on the second conductive plate, the translational actuating structure including a plurality of swing arm structures, each swing arm structure being connected to a corresponding second conductive unit;

a movable substrate disposed on the translational actuating structure.

According to the utility model discloses actuator, have following beneficial effect at least: the substrate is provided with a power supply circuit, the rotary actuating structure is arranged on the substrate, and the rotary driving unit can be directly connected with the power supply circuit to obtain electricity so as to drive the rotating plate to rotate. The middle part of the rotating plate is provided with a through hole, one end of each elastic electric connecting piece is connected with a corresponding port of the power supply circuit, and the other end of each elastic electric connecting piece penetrates through the through hole to be connected with the corresponding first conductive unit, so that the first conductive plate can be powered from the power supply circuit. Then, the second conductive plates are arranged on the first conductive plates, and each second conductive unit is connected with the corresponding first conductive unit, so that the second conductive units can obtain electricity from the power supply circuit. Finally, each swing arm structure is connected with the corresponding second conductive unit, so that the swing arm structure can be electrified from the power supply circuit, and the swing arm structure on the translation actuating structure can drive the movable substrate to move horizontally. In addition, since the movable base plate is laminated on the rotating plate, the rotation actuating structure may drive the movable base plate to rotate. Through the arrangement, the movable substrate can be driven to rotate or translate on the basis of power supply of only one driving circuit, so that the movable substrate has multiple action directions, the actuator can be easily actuated in different modes, and the assembled lens unit is beneficial to realizing the anti-shake function in the horizontal direction and the rotation direction. And because the elastic electric connecting piece is adopted for supplying power, when the rotating plate rotates, the power supply of the elastic electric connecting piece cannot be greatly influenced.

According to some embodiments of the utility model, the rotary driving unit includes first SMA wire, the one end of first SMA wire with the rotor plate is connected, the other end of first SMA wire with the first output port that supply circuit corresponds is connected, first SMA wire is used for the circular telegram shrink to drive the rotor plate is relative the base plate rotates.

According to some embodiments of the present invention, the rotating plate is a square plate, a first connection portion is disposed at a first end pin of the square plate, one end of the first SMA wire is connected to the first connection portion, and the other end of the first SMA wire is connected to a first output port corresponding to the power supply circuit; the rotary driving unit further comprises a second SMA wire, a second connecting part is arranged on a second end pin of the square plate, which is opposite to the end pin where the first connecting part is located, one end of the second SMA wire is connected with the second connecting part, and the other end of the second SMA wire is connected with a second output port corresponding to the power supply circuit; the first SMA wire and a first side edge adjacent to the square plate are arranged in parallel, the second SMA wire and the first SMA wire are oppositely arranged near a second side edge of the square plate, and the second SMA wire and a second side edge adjacent to the square plate are arranged in parallel.

According to some embodiments of the present invention, the rotary driving unit further includes a third SMA wire, the first end pin of the square plate is further provided with a third connecting portion, one end of the third SMA wire is connected to the third connecting portion, the other end of the third SMA wire is connected to a third output port corresponding to the power supply circuit, the third SMA wire is arranged in parallel to a third side edge adjacent to the square plate, and the third side edge and the first side edge are adjacent side edges; the rotary driving unit further comprises a fourth SMA wire, a fourth connecting part is further arranged at the second end pin of the square plate, one end of the fourth SMA wire is connected with the fourth connecting part, the other end of the fourth SMA wire is connected with a fourth output port corresponding to the power supply circuit, the fourth SMA wire is arranged in parallel with a fourth side edge adjacent to the square plate, and the fourth side edge and the second side edge are adjacent side edges; at least two sliding parts are arranged between the rotating plate and the base plate.

According to some embodiments of the present invention, the swing arm structure is disposed on one side of the conductive plate, the swing arm structure includes two elastic swing arms and a fifth SMA wire, one end of one of the elastic swing arms is connected to a ground terminal on the second conductive plate, and the other end of one of the elastic swing arms is connected to one end of the fifth SMA wire; one end of the other elastic swing arm is connected with a power supply end on the second conductive plate, and the other end of the other elastic swing arm is connected with the other end of the fifth SMA wire; the connecting ends of the two elastic swing arms and the fifth SMA wire are also respectively connected with one side of the movable substrate; and the fifth SMA wire is used for electrifying and contracting to drive the two elastic swing arms to swing so as to push the movable substrate to move in a horizontal direction.

According to the utility model discloses a some embodiments, swing arm structure is provided with four groups, four groups swing arm structure sets up respectively four sides of second current conducting plate terminal surface, four groups swing arm structure is used for the drive respectively movable base plate moves toward four directions, movable base plate with be provided with a plurality of slide bearings between the second current conducting plate.

According to some embodiments of the present invention, the elastic electrical connector, the first conductive unit and the second conductive unit are respectively provided with six, the power supply circuit is provided with six connection ports at opposite positions in the middle of the through hole, four of the six connection ports are power supply ports, and the other two are ground ports; four of the six first conductive units are respectively connected with four corresponding power supply ports through four elastic electric connecting pieces, the other two first conductive units are respectively connected with two ground ports through the other two elastic electric connecting pieces, the four first conductive units connected with the power supply ports are respectively electrically connected with four corresponding second conductive units, one first conductive unit connected with the ground port is connected with the rest two second conductive units, and the other first conductive unit connected with the ground port is electrically connected with the rotating plate; one elastic swing arm in each group of elastic swing arm structures is connected with the second conductive unit which is grounded, and the other elastic swing arm is correspondingly connected with the second conductive unit which is connected with the power supply port.

According to some embodiments of the utility model, six two bisymmetry ground of first electrically conductive unit set up on the rotor plate, each electrically conductive unit of second correspondingly sets up each electrically conductive unit is last.

According to some embodiments of the invention, the elastic electrical connector comprises an elastic portion and a connection end portion connected at both ends of the elastic portion.

According to the utility model discloses a camera module of second aspect embodiment, including foretell actuator, camera lens unit and flexible circuit board, the camera lens unit sets up on the actuator, the actuator is used for driving camera lens unit rotation or translation, the flexible circuit board with supply circuit connects, the flexible circuit board is used for connecting external power source and gives supply circuit supplies power.

According to the utility model discloses camera module has following beneficial effect at least: the camera module adopts the actuator, and can drive the movable substrate to rotate or translate on the basis of only one driving circuit for supplying power, so that the movable substrate has multiple action directions, the actuator can be easily used for realizing the actuating effects of different modes, and the assembled lens unit is favorable for realizing the anti-shake function in the horizontal direction and the rotating direction. And because the elastic electric connecting piece is adopted for supplying power, when the rotating plate rotates, the power supply of the elastic electric connecting piece cannot be greatly influenced.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

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 an exploded schematic view of an actuator according to an embodiment of the present invention;

fig. 2 is a schematic view of the base plate and rotary actuating structure assembly of an embodiment of the present invention;

fig. 3 is a schematic view of an assembly of a base plate, a rotary actuating structure and a first conductive plate of an embodiment of the invention;

fig. 4 is a schematic view of a substrate according to an embodiment of the present invention;

FIG. 5 is a schematic view of an actuator according to an embodiment of the present invention after assembly;

fig. 6 is a schematic view of a second conductive plate and translation actuating structure assembly of an embodiment of the present invention;

fig. 7 is a schematic view of a translation actuating structure according to an embodiment of the present invention;

fig. 8 is a schematic view of a camera module according to an embodiment of the present invention.

Reference numerals:

substrate 100, power supply circuit 110, first output port 111, second output port 112, third output port 113, fourth output port 114, power supply port 115, ground port 116,

A rotary actuation structure 200, a first SMA wire 210, a second SMA wire 220, a third SMA wire 230, a fourth SMA wire 240, a square plate 250, a first end foot 251, a first connection portion 2511, a third connection portion 2512, a second end foot 252, a second connection portion 2521, a fourth connection portion 2522, a first end foot 251, a second end foot 252, a first connection portion 2511, a second connection portion 2522, a third connection portion, a fourth connection portion 2522, a first SMA wire 230, a second SMA wire 240, a square plate 250, a first connection portion, a second connection portion, a third connection portion, a fourth connection portion 2512, a fourth connection portion, a fourth connection portion, a connection portion,

a first conductive plate 300, a first conductive unit 310,

An elastic electrical connector 400,

A second conductive plate 500, a second conductive unit 510,

A translational actuating structure 600, a swing arm structure 610, an elastic swing arm 611, a fifth SMA wire 612,

A sliding bearing 700,

A magnetic member 800,

A movable substrate 900,

A flexible circuit board 1000,

A lens unit 2000.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting 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.

With reference to fig. 1, 2, 3, 4, 5, 6, 7, and 8, a first aspect embodiment of the present invention proposes an actuator comprising: a substrate 100, wherein a power supply circuit 110 is provided on the substrate 100; the rotary actuating structure 200, the rotary actuating structure 200 is disposed on the substrate 100, the rotary actuating structure 200 includes a rotating plate and a rotary driving unit, a through hole is disposed in the middle of the rotating plate, and the rotary driving unit is electrically connected with the power supply circuit 110 for driving the rotating plate to rotate; a first conductive plate 300, the first conductive plate 300 being disposed on the rotating plate, the first conductive plate 300 including a plurality of first conductive units 310; a plurality of elastic electrical connectors 400, one end of each elastic electrical connector 400 being connected to a corresponding port of the power supply circuit 110, and the other end of each elastic electrical connector 400 passing through the through hole to be connected to a corresponding first conductive unit 310; a second conductive plate 500, the second conductive plate 500 being disposed on the first conductive plate 300, the second conductive plate 500 including a plurality of second conductive units 510, each of the second conductive units 510 being connected to a corresponding first conductive unit 310; a translational actuating structure 600, wherein the translational actuating structure 600 is disposed on the second conductive plate 500, the translational actuating structure 600 includes a plurality of swing arm structures 610, and each swing arm structure 610 is connected to a corresponding second conductive unit 510; a movable substrate 900, the movable substrate 900 being disposed on the translational actuating structure 600.

It is understood that the first conductive plate 300 and the second conductive plate 500 may be a metal sheet or other conductive material. The plurality of first conductive units 310 may not affect the respective conduction condition, and the plurality of first conductive units 310 may not affect the respective conduction condition.

According to the utility model discloses actuator, have following beneficial effect at least: the power supply circuit 110 is disposed on the substrate 100, the rotation actuating structure 200 is disposed on the substrate 100, and the rotation driving unit can be directly connected to the power supply circuit 110 to drive the rotation plate to rotate. A through hole is formed in the middle of the rotating plate, one end of each elastic electrical connector 400 is connected to a corresponding port of the power supply circuit 110, and the other end of each elastic electrical connector 400 passes through the through hole to be connected to a corresponding first conductive unit 310, so that the first conductive plate 300 can be powered from the power supply circuit 110. Then, the second conductive plates 500 are disposed on the first conductive plates 300, and each of the second conductive units 510 is connected with a corresponding first conductive unit 310, so that the second conductive unit 510 can get power from the power supply circuit 110. Finally, each swing arm structure 610 is connected to the corresponding second conductive unit 510, such that the swing arm structure 610 can be powered from the power supply circuit 110, and thus the swing arm structure 610 on the translational actuating structure 600 can drive the movable substrate 900 to move horizontally. In addition, since the movable substrate 900 is stacked on the rotating plate, the rotation actuating structure 200 may drive the movable substrate 900 to rotate. Through the above arrangement, the movable substrate 900 can be driven to rotate or translate on the basis of power supply of only one driving circuit, so that the movable substrate 900 has multiple motion directions, the actuator can be easily actuated in different modes, and the assembled lens unit 2000 can be favorably provided with anti-shake functions in the horizontal direction and the rotation direction. And because the elastic electric connector 400 is adopted for supplying power, when the rotating plate rotates, the power supply of the elastic electric connector 400 is not greatly influenced.

In some embodiments of the present invention, the rotation driving unit includes a first SMA wire 210, one end of the first SMA wire 210 is connected to the rotating plate, the other end of the first SMA wire 210 is connected to the first output port 111 corresponding to the power supply circuit 110, and the first SMA wire 210 is used for being contracted by power supply to drive the rotating plate to rotate relative to the substrate 100. The rotating plate is set as a square plate 250, a first connection portion 2511 is arranged at a first end pin 251 of the square plate 250, one end of the first SMA wire 210 is connected with the first connection portion 2511, and the other end of the first SMA wire 210 is connected with a first output port 111 corresponding to the power supply circuit 110; the rotary driving unit further includes a second SMA wire 220, a second connection portion 2521 is disposed on the second end pin 252 of the square plate 250, which is diagonal to the end pin where the first connection portion 2511 is located, one end of the second SMA wire 220 is connected to the second connection portion 2521, and the other end of the second SMA wire 220 is connected to the second output port 112 corresponding to the power supply circuit 110; the first SMA wire 210 is disposed in parallel with a first side edge adjacent to the square plate 250, the second SMA wire 220 is disposed opposite the first SMA wire 210 near a second side edge of the square plate 250, and the second SMA wire 220 is disposed in parallel with a second side edge adjacent to the square plate 250.

For example, the first SMA wire 210 may drive the rotating plate to rotate in one direction, and the force of the second SMA wire 220 may be combined to make the rotating plate rotate in the one direction more stable.

In some embodiments of the present invention, the rotation driving unit further includes a third SMA wire 230, the first end pin 251 of the square plate 250 is further provided with a third connecting portion 2512, one end of the third SMA wire 230 is connected to the third connecting portion 2512, the other end of the third SMA wire 230 is connected to the third output port 113 corresponding to the power supply circuit 110, the third SMA wire 230 is arranged in parallel to a third side edge adjacent to the square plate 250, and the third side edge and the first side edge are adjacent side edges; the rotary driving unit further comprises a fourth SMA wire 240, a fourth connecting portion 2522 is further disposed at the second end pin 252 of the square plate 250, one end of the fourth SMA wire 240 is connected with the fourth connecting portion 2522, the other end of the fourth SMA wire 240 is connected with the fourth output port 114 corresponding to the power supply circuit 110, the fourth SMA wire 240 is disposed in parallel with a fourth side edge adjacent to the square plate 250, and the fourth side edge and the second side edge are adjacent side edges; at least two sliding members are further provided between the rotating plate and the base plate 100.

It is understood that the third SMA wire 230 may drive the rotation plate to rotate in another direction, which is opposite to the driving direction of the first SMA wire 210 and the second SMA wire 220, and if the driving direction of the first SMA wire 210 and the second SMA wire 220 is clockwise, the driving direction of the third SMA wire 230 is counterclockwise. And the rotation of the rotating plate in the rotating direction may be more smooth by the cooperation of the third SMA wire 230 and the fourth SMA wire 240. Wherein, at least two sliders, can be four, evenly distributed is between rotating plate and base plate 100, makes the rotation of rotating plate more smooth and easy. The sliding member may be a sliding bearing 700. It is understood that the pivotal plate may also be rotated around the connection end of the elastic connection member with the base plate 100, and since the elastic connection member has elasticity, the pivotal plate may also be used as an elastic restoring member after being pivoted.

In some embodiments of the present invention, the swing arm structure 610 is disposed at one side of the conductive plate, the swing arm structure 610 includes two elastic swing arms 611 and a fifth SMA wire 612, one end of one of the elastic swing arms 611 is connected to the ground terminal on the second conductive plate 500, and the other end of one of the elastic swing arms 611 is connected to one end of the fifth SMA wire 612; one end of the other elastic swing arm 611 is connected to the power supply end of the second conductive plate 500, and the other end of the other elastic swing arm 611 is connected to the other end of the fifth SMA wire 612; the connecting ends of the two elastic swing arms 611 connected with the fifth SMA wire 612 are also connected with one side of the movable substrate 900 respectively; the fifth SMA wire 612 is used for driving the two elastic swing arms 611 to swing by being electrified and contracted so as to push the movable substrate 900 to move in a horizontal direction. The swing arm structures 610 are provided with four groups, the four groups of swing arm structures 610 are respectively arranged on four sides of the end surface of the second conductive plate 500, the four groups of swing arm structures 610 are respectively used for driving the movable substrate 900 to move towards four directions, and a plurality of sliding bearings 700 are arranged between the movable substrate 900 and the second conductive plate 500.

It can be understood that four sets of swing arm structures 610 may be uniformly distributed on the second conductive plate 500, each two of the four sets of swing arm structures 610 are perpendicular to each other, the connection ends of the elastic swing arms 611 of the swing arm structures 610 of each set connected to the fifth SMA wire 612 are further connected to one side of the movable substrate 900, and the movable substrate 900 can be translated in four directions, front, back, left and right, by energizing the different sets of swing arm structures 610. And a plurality of sliding bearings 700 are disposed between the movable substrate 900 and the second conductive plate 500, which is advantageous for smooth sliding between the movable substrate 900 and the second conductive plate 500. The power supply terminal on the second conductive plate 500 may be a second conductive unit 510 responsible for power supply, and the ground terminal on the second conductive plate 500 may be a second conductive unit 510 grounded.

In some embodiments of the present invention, the number of the elastic electrical connector 400, the number of the first conductive elements 310, and the number of the second conductive elements 510 are six, six connection ports are provided at opposite positions of the middle portion of the through hole of the power supply circuit 110, four of the six connection ports are power supply ports 115, and the other two are ground ports 116; four of the six first conductive elements 310 are respectively connected with the corresponding four power supply ports 115 through four elastic electrical connectors 400, the other two first conductive elements 310 are respectively connected with two ground ports 116 through the other two elastic electrical connectors 400, wherein the four first conductive elements 310 connected with the power supply ports 115 are respectively electrically connected with the corresponding four second conductive elements 510, one of the first conductive elements 310 connected with the ground port 116 is connected with the remaining two second conductive elements 510, and the other first conductive element 310 connected with the ground port 116 is electrically connected with the rotating plate; one elastic swing arm 611 in each group of elastic swing arm 611 structures 610 is connected to the grounded second conductive unit 510, and the other elastic swing arm 611 is correspondingly connected to the second conductive unit 510 connected to the power supply port 115.

It is understood that the second conductive element 510 and the first conductive element 310 may be electrically connected by forming a connection hole in the second conductive element 510, and then forming a conductive material, such as solder, in the connection hole, so that the conductive material connects the second conductive element 510 and the first conductive element 310, thereby achieving the electrical connection between the second conductive element 510 and the first conductive element 310. The first conductive units 310 may be electrically connected to the rotating plate, and each of the first conductive units 310 may be formed with a connection hole, and then a conductive material, such as solder, is formed in the connection hole, and the conductive material connects the rotating plate and the first conductive unit 310, so that the rotating plate and the first conductive unit 310 are electrically connected. In addition, the first conductive element 310 connected to the ground port 116 and the two remaining second conductive elements 510 may be integrally formed, wherein the first conductive element 310 connected to the ground port 116 is electrically connected by forming a connection hole and adding a conductive material.

In some embodiments of the present invention, the six first conductive units 310 are symmetrically disposed on the rotating plate two by two, and each second conductive unit 510 is correspondingly disposed on each first conductive unit 310, which is beneficial to the stability of the whole structure. Elastic electrical connector 400 includes the elastic part and connects the tip at the elastic part both ends, and the elastic part is the elastic construction that the shell fragment formed through continuous bending, perhaps forms the structure of continuous bending through sculpture or punching press for elastic electrical connector 400 can integrated into one piece, reduces the resistance that the components of a whole that can function independently structure brought. It is understood that each elastic electrical connector 400 may also be integrally formed with the corresponding first conductive element 310, thereby reducing the resistance caused by the separate structure.

An embodiment of the second aspect of the present invention provides a camera module, including foretell actuator, lens unit 2000 and flexible circuit board 1000, lens unit 2000 sets up on the actuator, and the actuator is used for driving the rotation or the translation of lens unit 2000, and flexible circuit board 1000 is connected with power supply circuit 110, and flexible circuit board 1000 is used for connecting external power source and supplies power for power supply circuit 110. The camera module can drive the movable substrate 900 to rotate or translate on the basis of only one driving circuit for supplying power due to the adoption of the actuator, so that the movable substrate 900 has multiple action directions, the actuator can be easily actuated in different modes, and the assembled lens unit 2000 is beneficial to realizing the anti-shake function in the horizontal direction and the rotating direction. And because the elastic electric connector 400 is adopted for supplying power, when the rotating plate rotates, the power supply of the elastic electric connector 400 is not greatly influenced.

In some embodiments, at least two magnetic members 800 may be further included, the at least two magnetic members 800 are distributed on an end surface of the movable substrate 900 away from the second conductive plate 500, and the magnetic members 800 are configured to generate a magnetic attraction force with the second conductive plate 500 to press the movable substrate 900 against the conductive plate.

An actuator according to an embodiment of the present invention is described in detail below in a specific embodiment with reference to fig. 1 to 8. It is to be understood that the following description is illustrative only and is not intended as a specific limitation on the invention.

An embodiment of the utility model provides an actuator is provided, include: a substrate 100, wherein a power supply circuit 110 is provided on the substrate 100;

the rotary actuating structure 200, the rotary actuating structure 200 is disposed on the substrate 100, the rotary actuating structure 200 includes a rotating plate and a rotary driving unit, a through hole is disposed in the middle of the rotating plate, and the rotary driving unit is electrically connected with the power supply circuit 110 for driving the rotating plate to rotate; a first conductive plate 300, the first conductive plate 300 being disposed on the rotating plate, the first conductive plate 300 including a plurality of first conductive units 310; a plurality of elastic electrical connectors 400, one end of each elastic electrical connector 400 being connected to a corresponding port of the power supply circuit 110, and the other end of each elastic electrical connector 400 passing through the through hole to be connected to a corresponding first conductive unit 310; a second conductive plate 500, the second conductive plate 500 being disposed on the first conductive plate 300, the second conductive plate 500 including a plurality of second conductive units 510, each of the second conductive units 510 being connected to a corresponding first conductive unit 310; a translational actuating structure 600, wherein the translational actuating structure 600 is disposed on the second conductive plate 500, the translational actuating structure 600 includes a plurality of swing arm structures 610, and each swing arm structure 610 is connected to a corresponding second conductive unit 510; a movable substrate 900, the movable substrate 900 being disposed on the translational actuating structure 600.

The rotation driving unit includes a first SMA wire 210, one end of the first SMA wire 210 is connected to the rotation plate, the other end of the first SMA wire 210 is connected to the first output port 111 corresponding to the power supply circuit 110, and the first SMA wire 210 is used to be electrified and contracted to drive the rotation plate to rotate relative to the substrate 100. The rotating plate is set as a square plate 250, a first connection portion 2511 is arranged at a first end pin 251 of the square plate 250, one end of the first SMA wire 210 is connected with the first connection portion 2511, and the other end of the first SMA wire 210 is connected with a first output port 111 corresponding to the power supply circuit 110; the rotary driving unit further includes a second SMA wire 220, a second connection portion 2521 is disposed on the second end pin 252 of the square plate 250, which is diagonal to the end pin where the first connection portion 2511 is located, one end of the second SMA wire 220 is connected to the second connection portion 2521, and the other end of the second SMA wire 220 is connected to the second output port 112 corresponding to the power supply circuit 110; the first SMA wire 210 is disposed in parallel with a first side edge adjacent to the square plate 250, the second SMA wire 220 is disposed opposite the first SMA wire 210 near a second side edge of the square plate 250, and the second SMA wire 220 is disposed in parallel with a second side edge adjacent to the square plate 250.

The rotary driving unit further comprises a third SMA wire 230, a third connecting portion 2512 is further disposed at the first end pin 251 of the square plate 250, one end of the third SMA wire 230 is connected with the third connecting portion 2512, the other end of the third SMA wire 230 is connected with a third output port 113 corresponding to the power supply circuit 110, the third SMA wire 230 is disposed in parallel with a third side edge adjacent to the square plate 250, and the third side edge and the first side edge are adjacent side edges; the rotary driving unit further comprises a fourth SMA wire 240, a fourth connecting portion 2522 is further disposed at the second end pin 252 of the square plate 250, one end of the fourth SMA wire 240 is connected with the fourth connecting portion 2522, the other end of the fourth SMA wire 240 is connected with the fourth output port 114 corresponding to the power supply circuit 110, the fourth SMA wire 240 is disposed in parallel with a fourth side edge adjacent to the square plate 250, and the fourth side edge and the second side edge are adjacent side edges; at least two sliding members are further provided between the rotating plate and the base plate 100.

The swing arm structure 610 is arranged on one side of the conductive plate, the swing arm structure 610 comprises two elastic swing arms 611 and a fifth SMA wire 612, one end of one elastic swing arm 611 is connected with a ground terminal on the second conductive plate 500, and the other end of one elastic swing arm 611 is connected with one end of the fifth SMA wire 612; one end of the other elastic swing arm 611 is connected to the power supply end of the second conductive plate 500, and the other end of the other elastic swing arm 611 is connected to the other end of the fifth SMA wire 612; the connecting ends of the two elastic swing arms 611 connected with the fifth SMA wire 612 are also connected with one side of the movable substrate 900 respectively; the fifth SMA wire 612 is used for driving the two elastic swing arms 611 to swing by being electrified and contracted so as to push the movable substrate 900 to move in a horizontal direction.

The swing arm structures 610 are provided with four sets, the four sets of swing arm structures 610 are respectively disposed on four sides of the end surface of the second conductive plate 500, the four sets of swing arm structures 610 are respectively used for driving the movable substrate 900 to move in four directions, and a plurality of sliding bearings 700 are disposed between the movable substrate 900 and the second conductive plate 500.

Six elastic electric connectors 400, six first conductive units 310 and six second conductive units 510 are respectively arranged, six connection ports are arranged at opposite positions of the middle part of the through hole of the power supply circuit 110, four of the six connection ports are power supply ports 115, and the other two of the six connection ports are grounding ports 116; four of the six first conductive elements 310 are respectively connected with the corresponding four power supply ports 115 through four elastic electrical connectors 400, the other two first conductive elements 310 are respectively connected with two ground ports 116 through the other two elastic electrical connectors 400, wherein the four first conductive elements 310 connected with the power supply ports 115 are respectively electrically connected with the corresponding four second conductive elements 510, one of the first conductive elements 310 connected with the ground port 116 is connected with the remaining two second conductive elements 510, and the other first conductive element 310 connected with the ground port 116 is electrically connected with the rotating plate; one elastic swing arm 611 in each group of elastic swing arm 611 structures 610 is connected to the grounded second conductive unit 510, and the other elastic swing arm 611 is correspondingly connected to the second conductive unit 510 connected to the power supply port 115.

The six first conductive units 310 are symmetrically arranged on the rotating plate two by two, and each second conductive unit 510 is correspondingly arranged on each first conductive unit 310. Elastic electrical connector 400 includes an elastic portion and connection end portions connected to both ends of the elastic portion, and the elastic portion is an elastic structure formed by continuously bending an elastic sheet.

According to the embodiment of the present invention, through such a configuration, at least some effects as follows can be achieved, the substrate 100 is provided with the power supply circuit 110, the rotary actuating structure 200 is disposed on the substrate 100, and the rotary driving unit can be directly connected with the power supply circuit 110 to obtain electricity to drive the rotation plate to rotate. A through hole is formed in the middle of the rotating plate, one end of each elastic electrical connector 400 is connected to a corresponding port of the power supply circuit 110, and the other end of each elastic electrical connector 400 passes through the through hole to be connected to a corresponding first conductive unit 310, so that the first conductive plate 300 can be powered from the power supply circuit 110. Then, the second conductive plates 500 are disposed on the first conductive plates 300, and each of the second conductive units 510 is connected with a corresponding first conductive unit 310, so that the second conductive unit 510 can get power from the power supply circuit 110. Finally, each swing arm structure 610 is connected to the corresponding second conductive unit 510, such that the swing arm structure 610 can be powered from the power supply circuit 110, and thus the swing arm structure 610 on the translational actuating structure 600 can drive the movable substrate 900 to move horizontally. In addition, since the movable substrate 900 is stacked on the rotating plate, the rotation actuating structure 200 may drive the movable substrate 900 to rotate. Through the above arrangement, the movable substrate 900 can be driven to rotate or translate on the basis of power supply of only one driving circuit, so that the movable substrate 900 has multiple motion directions, the actuator can be easily actuated in different modes, and the assembled lens unit 2000 can be favorably provided with anti-shake functions in the horizontal direction and the rotation direction. And because the elastic electric connector 400 is adopted for supplying power, when the rotating plate rotates, the power supply of the elastic electric connector 400 is not greatly influenced.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. An actuator, comprising:

a movable substrate disposed on the translational actuating structure.

2. The actuator of claim 1, wherein: the rotary driving unit comprises a first SMA wire, one end of the first SMA wire is connected with the rotating plate, the other end of the first SMA wire is connected with a first output port corresponding to the power supply circuit, and the first SMA wire is used for being electrified and contracted to drive the rotating plate to rotate relative to the substrate.

3. The actuator of claim 2, wherein: the rotating plate is a square plate, a first connecting part is arranged at a first end pin of the square plate, one end of the first SMA wire is connected with the first connecting part, and the other end of the first SMA wire is connected with a first output port corresponding to the power supply circuit; the rotary driving unit further comprises a second SMA wire, a second connecting part is arranged on a second end pin of the square plate, which is opposite to the end pin where the first connecting part is located, one end of the second SMA wire is connected with the second connecting part, and the other end of the second SMA wire is connected with a second output port corresponding to the power supply circuit; the first SMA wire and a first side edge adjacent to the square plate are arranged in parallel, the second SMA wire and the first SMA wire are oppositely arranged near a second side edge of the square plate, and the second SMA wire and a second side edge adjacent to the square plate are arranged in parallel.

4. An actuator according to claim 3, wherein: the rotary driving unit further comprises a third SMA wire, a third connecting part is further arranged at the first end pin of the square plate, one end of the third SMA wire is connected with the third connecting part, the other end of the third SMA wire is connected with a third output port corresponding to the power supply circuit, the third SMA wire is arranged in parallel with a third side edge adjacent to the square plate, and the third side edge and the first side edge are adjacent side edges; the rotary driving unit further comprises a fourth SMA wire, a fourth connecting part is further arranged at the second end pin of the square plate, one end of the fourth SMA wire is connected with the fourth connecting part, the other end of the fourth SMA wire is connected with a fourth output port corresponding to the power supply circuit, the fourth SMA wire is arranged in parallel with a fourth side edge adjacent to the square plate, and the fourth side edge and the second side edge are adjacent side edges; at least two sliding parts are arranged between the rotating plate and the base plate.

5. The actuator of claim 4, wherein: the swing arm structure is arranged on one side of the conductive plate and comprises two elastic swing arms and a fifth SMA wire, one end of one elastic swing arm is connected with a grounding end on the second conductive plate, and the other end of one elastic swing arm is connected with one end of the fifth SMA wire; one end of the other elastic swing arm is connected with a power supply end on the second conductive plate, and the other end of the other elastic swing arm is connected with the other end of the fifth SMA wire; the connecting ends of the two elastic swing arms and the fifth SMA wire are also respectively connected with one side of the movable substrate; and the fifth SMA wire is used for electrifying and contracting to drive the two elastic swing arms to swing so as to push the movable substrate to move in a horizontal direction.

6. The actuator of claim 5, wherein: the swing arm structures are arranged in four groups, the four groups of swing arm structures are respectively arranged on four sides of the end face of the second current-conducting plate, the four groups of swing arm structures are respectively used for driving the movable base plate to move towards four directions, and a plurality of sliding bearings are arranged between the movable base plate and the second current-conducting plate.

7. The actuator of claim 6, wherein: the elastic electric connector, the first conductive unit and the second conductive unit are respectively provided with six, the power supply circuit is provided with six connecting ports at opposite positions in the middle of the through hole, four of the six connecting ports are power supply ports, and the other two connecting ports are grounding ports; four of the six first conductive units are respectively connected with four corresponding power supply ports through four elastic electric connecting pieces, the other two first conductive units are respectively connected with two ground ports through the other two elastic electric connecting pieces, the four first conductive units connected with the power supply ports are respectively electrically connected with four corresponding second conductive units, one first conductive unit connected with the ground port is connected with the rest two second conductive units, and the other first conductive unit connected with the ground port is electrically connected with the rotating plate; one elastic swing arm in each group of elastic swing arm structures is connected with the second conductive unit which is grounded, and the other elastic swing arm is correspondingly connected with the second conductive unit which is connected with the power supply port.

8. The actuator of claim 7, wherein: the six first conductive units are symmetrically arranged on the rotating plate in pairs, and each second conductive unit is correspondingly arranged on each first conductive unit.

9. The actuator of claim 1, wherein: the elastic electric connector comprises an elastic part and connecting end parts connected to two ends of the elastic part.

10. A camera module, characterized by: the lens unit includes the actuator of any one of claims 1 to 9, a lens unit disposed on the actuator, the actuator for driving the lens unit to rotate or translate, and a flexible circuit board connected to the power supply circuit for connecting an external power source to supply power to the power supply circuit.