CN113589466B - Driving device and electronic apparatus - Google Patents

Abstract

The present invention provides a driving device and an electronic device, wherein the driving device includes a carrier, a housing, an elastic member, an electric driving piece and a base; the housing and the base cooperate to form an accommodating cavity, and the elastic The component, the carrier and the electro-actuated drive piece are sequentially arranged in the accommodating cavity; the carrier is movably connected with the housing through the elastic component, and the carrier is used to carry functional devices; the The first end of the electro-actuating sheet is connected to the base, and the second end of the electro-actuating sheet is connected to the carrier; wherein, when a voltage is applied to the electro-actuating sheet, the electro-actuating sheet The driving piece deforms and drives the carrier to move. The magnetoelectric structure is canceled in the structure of the driving device, so that no magnetic field interference will be generated to the circuits and devices around the driving device, and the working environment of the circuits and devices around the driving device is purified.

Description

Drives and Electronics

technical field

The invention relates to the field of electronic devices, in particular to a driving device and electronic equipment.

Background technique

At present, with the development of electronic equipment, people often take images through electronic equipment. With the improvement of people's needs, the quality requirements for images are also getting higher and higher.

The driving structure in the camera module of the electronic device can drive the lens to move to realize the function of auto-focus, so as to capture a clearer image.

The traditional drive device uses a magnetoelectric structure to drive the drive device, but the magnetoelectric structure will interfere with the electronic devices around the drive device and affect the performance of the electronic device.

Contents of the invention

Embodiments of the present invention provide a drive device and electronic equipment to solve the current problem that the magnetoelectric structure of the drive device interferes with electronic devices around the drive device and affects the performance of the electronic devices.

In order to solve the above problems, the embodiment of the present invention is implemented as follows:

The first aspect of the embodiment of the present invention provides a driving device, including a carrier, a housing, an elastic member, an electric driving piece, and a base;

The housing and the base cooperate to form an accommodating cavity, and the elastic member, the carrier and the electro-actuating piece are sequentially arranged in the accommodating cavity;

The carrier is movably connected to the housing through the elastic member, and the carrier is used to carry functional devices;

The first end of the electro-actuating sheet is connected to the base, and the second end of the electro-actuating sheet is connected to the carrier;

Wherein, when a voltage is applied to the electro-actuating sheet, the electro-actuating sheet deforms and drives the carrier to move.

Further, it also includes a fixing piece, the fixing piece is located in the accommodating cavity, and the electro-actuating driving piece is arranged between the fixing piece and the base, the fixing piece and the electro-actuating driving piece The first surface of the sheet is electrically connected, the second surface of the electro-driven sheet is electrically connected to the base, and the first surface and the second surface are oppositely distributed.

Further, the base includes a base body and a first electrical connection part, the first electrical connection part is arranged on the base body, and the first electrical connection part is electrically connected to the second electrical connection part of the fixing member .

Further, the base body is also provided with a first groove;

The first electrical connection part includes a first electrical connection surface and a first pin, and the first electrical connection surface is electrically connected to the first pin;

Wherein, the first electrical connection surface is located in the first groove, the second electrical connection part of the fixing member is at least partially located in the first groove, and is connected to the first electrical connection surface through the first electrical connection surface. The first pin is electrically connected.

Further, the base further includes a third electrical connection part, the base body is provided with a second groove, and the second groove has a bearing area;

The third electrical connection part includes a second electrical connection surface and a second pin arranged in the carrying area, and the second electrical connection surface is electrically connected to the second pin;

Wherein, the second pin is located outside the second groove, and the second electrical connection surface is electrically connected to the second surface of the electro-actuating sheet.

Further, the base body is further provided with a fourth electrical connection portion, the fourth electrical connection portion includes a third electrical connection surface, and the third electrical connection surface is spaced apart from the first electrical connection portion.

Further, the base is a square structural member, the number of the first electrical connection part is one, the number of the third electrical connection part is three, the first electrical connection part and the three third The electrical connection parts are respectively located at the four corner regions of the base.

Further, the bottom of the second groove is provided with a first through hole, and the base body is also provided with at least two first positioning columns, at least two of the first positioning columns are located in the second groove In addition, and the first positioning column is distributed adjacent to the first electrical connection part or the third electrical connection part, and the fixing member is provided with a first positioning column that is compatible with the first positioning column. hole;

The fixing member is connected to the first positioning column through the first positioning hole.

Further, the groove bottom of the second groove is provided with at least two first bosses, the at least two first bosses are distributed around the first through hole, and the at least two first bosses The distribution is symmetrical about the center of the first through hole.

Further, the at least two first bosses include four first bosses, the four first bosses are distributed around the first through hole, and the four first bosses are relative to the first through hole. The centers of the through holes are symmetrically distributed;

Wherein, the first boss is a rectangular structural member, and the first edge of the first boss near the first through hole is provided with an arc-shaped notch suitable for the first through hole.

Further, the carrier includes a third surface facing the electro-actuating sheet, the third surface is provided with a second positioning post, and the electro-actuating sheet is provided with a hole that fits the second positioning post. the first positioning hole;

The electro-actuating plate is connected to the second positioning post through the first positioning hole.

Further, the third surface is provided with a second boss, and the base further includes a first boss opposite to the second boss;

The sum of the first height of the first boss and the second height of the second boss is greater than or equal to the thickness of the electro-actuating sheet.

Further, the carrier further includes a fourth surface facing the elastic member, and the fourth surface is provided with a third boss.

Further, the elastic member includes a bracket and an elastic part;

The bracket is fixedly arranged on a side of the housing facing the carrier, and the elastic part is connected with the carrier.

Further, the elastic part is provided with a second through hole, and the edge of the second through hole is provided with a plurality of first notches, and the plurality of first notches are symmetrically distributed with respect to the center of the second through hole;

The carrier includes a plurality of connection protrusions, the number of the connection protrusions is the same as the number of the first notches, and each of the connection protrusions is respectively connected to the elastic part through a first notch.

Further, the electro-actuated driving sheet is an ion-conducting driving sheet, and the ion-conducting driving sheet includes an ion-exchange resin layer and a first electrode layer and a second electrode respectively arranged on two opposite surfaces of the ion-exchange resin layer layer, the ion exchange resin layer has a polymer electrolyte in it.

Further, when the voltage applied to the ion-conducting driving plate is a first voltage, the ion-conducting driving plate drives the carrier to move along a first direction;

When the voltage applied to the ion-conducting driving plate is a second voltage, the ion-conducting driving plate drives the carrier to move in a second direction;

Wherein, the polarities of the first voltage and the second voltage are opposite, and the first direction and the second direction are opposite to each other.

Further, when the voltage applied to the ion-conducting driving plate is a first voltage, the ion-conducting driving plate drives the carrier to move a first distance along a first direction;

When the voltage applied to the ion-conducting driving plate is a third voltage, the ion-conducting driving plate drives the carrier to move a second distance along the first direction;

Wherein, the first voltage and the third voltage have the same polarity, and the third voltage is greater than the first voltage, and the first distance is different from the second distance.

Further, when the voltage applied to the ion-conducting driving plate is a first voltage, the ion-conducting driving plate drives the carrier to move along a first direction at a first speed;

When the voltage applied to the ion-conducting driving plate is a third voltage, the ion-conducting driving plate drives the carrier to move along the first direction at a second speed;

Wherein, the first voltage and the third voltage have the same polarity, and the third voltage is greater than the first voltage, and the first rate is different from the second rate.

A second aspect of the embodiments of the present invention provides an electronic device, including the drive device described in any one of the foregoing.

An embodiment of the present invention provides a driving device, which includes a carrier, a housing, an elastic member, an electric drive plate and a base; the housing and the base cooperate to form an accommodating cavity, and the elastic member, the carrier and the electro-actuating piece are sequentially arranged in the accommodating cavity; the carrier is movably connected with the housing through the elastic member, and the carrier is used to carry functional devices; the electro-actuating piece The first end is connected to the base, and the second end of the electro-actuating sheet is connected to the carrier; wherein, when a voltage is applied to the electro-actuating sheet, the electro-actuating sheet deforms and drives The carrier moves. The magnetoelectric structure is canceled in the structure of the driving device, so that no magnetic field interference will be generated to the circuits and devices around the driving device, and the working environment of the circuits and devices around the driving device is purified.

Description of drawings

Fig. 1 is an exploded view of a driving device provided by an embodiment of the present invention;

2-15 are partial structural schematic diagrams of the drive device provided by the embodiment of the present invention;

Fig. 16 is a schematic cross-sectional view of a driving device provided by an embodiment of the present invention;

Fig. 17 is a schematic diagram of an electro-actuating sheet made of IPMC provided by an embodiment of the present invention without applying a voltage;

18 and 19 are schematic diagrams of the deformation of the electro-actuated sheet provided by the embodiment of the present invention when a voltage is applied.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

Please refer to Fig. 1, the present embodiment provides a driving device, including a carrier 1, a housing 2, an elastic member 3, an electric drive piece 4 and a base 5; the housing 2 and the base 5 cooperate to form an accommodating Cavity, the elastic member 3, the carrier 1 and the electro-actuating plate 4 are sequentially arranged in the accommodating cavity; the carrier 1 is movably connected with the housing 2 through the elastic member 3, And the carrier 1 is used to carry functional devices; the first end of the electro-actuating sheet 4 is connected to the base 5, and the second end of the electro-actuating sheet 4 is connected to the carrier 1; wherein , when a voltage is applied to the electro-actuating sheet 4, the electro-actuating sheet 4 deforms and drives the carrier 1 to move, or the electro-actuating sheet 4 deforms so that the elastic member 3 drives the The carrier 1 moves.

Specifically, the carrier 1 is movably connected to the housing 2 through the elastic member 3, that is, the carrier 1 can move relative to the housing 2, for example, the elastic member 3 is arranged on the housing 2, and the carrier 1 is connected to the elastic member 3 , suspended in the accommodating cavity, and the carrier 1 can move in the accommodating cavity. The carrier 1 is used to carry a functional device, and the carrier 1 and the functional device can be detachably connected, for example, threaded or clamped, and the functional device can be an optical device. For example, the optical device can be a lens (lens) or lens assembly applied to devices such as cameras, infrared sensors, flashlights, etc., and the optical path of the optical device outputting or receiving light signals, the divergence angle and the focus of the optical device can be adjusted through the driving device. Optical parameters; the functional device can also be an acoustic module, and the position of the acoustic module can be adjusted through the driving device, thereby changing the volume of the front or rear cavity of the acoustic module to change the audio characteristics of the acoustic module, etc.; the functional device can also It may be some other movable devices, such as a stylus, an interface, or a card tray. In this case, the driving device is a driving structure for ejecting the movable device.

The first end of the electro-actuating sheet 4 is connected with the base 5 and fixed on the base 5, and the second end of the electro-actuating sheet 4 is connected with the carrier 1. When the electro-actuating sheet 4 is applied When the voltage is applied, the electro-actuating piece 4 deforms and drives the carrier 1 to move. For example, depending on the deformation direction of the electro-actuating piece 4, the carrier 1 can be driven to move toward the base or away from the base.

The electro-actuating piece 4 is deformed so that the elastic member 3 drives the carrier 1 to move, that is, when the electro-actuating piece 4 deforms and retracts in reverse, under the action of the elastic member 3, the carrier 1 moves backward Condition.

It should be noted that when the carrier 1 is suspended, the elastic member 3 and the electro-actuating plate 4 can jointly provide a force to the carrier 1 to maintain the suspended state. At this time, the elastic member 3 may not be in the initial state, that is, the elastic member 3 In a state of compression or tension, it has a certain elastic potential energy. When the electro-actuating sheet 4 is energized to deform and bend along the side away from the base 5 , the electro-actuating sheet 4 drives the carrier 1 to move away from the base 5 , and the elastic member 3 is compressed at this time.

In the case where the electro-actuating sheet 4 is energized to deform and bend along the side facing the base 5, the following two situations may exist:

The electric driving piece 4 drives the carrier 1 to move towards the direction close to the base 5, and at the same time the elastic member 3 is stretched. The premise of this situation is: when the carrier 1 is in a suspended state, the elastic member 3 is in the original length or stretched state;

The elastic member 3 drives the carrier 1 to move towards the base 5 . This situation is for the case where the elastic member 3 is in a compressed state when the carrier 1 is in a suspended state.

The driving device in this embodiment includes a carrier 1, a housing 2, an elastic member 3, an electric driving piece 4 and a base 5; the housing 2 and the base 5 cooperate to form an accommodating cavity, and the elastic Part 3, the carrier 1 and the electro-actuated drive piece 4 are sequentially arranged in the accommodating cavity; the carrier 1 is movably connected with the housing 2 through the elastic member 3, and the carrier 1 is For carrying functional devices; the first end of the electro-actuating sheet 4 is connected to the base 5, and the second end of the electro-actuating sheet 4 is connected to the carrier 1; wherein, when the electric When a voltage is applied to the electro-actuating sheet 4 , the electro-actuating sheet 4 deforms and drives the carrier 1 to move. The magnetoelectric structure is canceled in the structure of the driving device, so that no magnetic field interference will be generated to the circuits and devices around the driving device, and the working environment of the circuits and devices around the driving device is purified.

As shown in FIG. 1 , the driving device further includes a fixing part 6, the fixing part 6 is located in the accommodating cavity, and the electro-actuating driving piece 4 is arranged between the fixing part 6 and the base 5, The fixing member 6 is electrically connected to the first surface of the electro-actuating sheet 4, the second surface of the electro-actuating sheet 4 is electrically connected to the base, and the first surface is opposite to the second surface. distributed.

The fixing part 6 is used to fix the electro-actuating piece 4 on the base 5, and the fixing part 6 is electrically connected with the first surface of the electro-actuating piece 4, that is, the fixing part 6 is also used for conducting the electro-actuating piece 4. current. The fixing part 6 can be a metal part. The first surface of the electro-actuating sheet 4 is electrically connected to the fixture 6, and the second surface of the electro-actuating sheet 4 is electrically connected to the base 5. Like this, by applying a voltage to the fixture 6 and the base 5, the electro-actuating The driving piece 4 applies a voltage, so that the electro-actuating piece 4 is deformed, and the carrier 1 is driven to move.

Optionally, as shown in FIG. 9 , the fixing member 6 is a frame structure with a through hole in the middle, and the frame structure is an octagonal structure, wherein four sides of the octagonal structure are provided with convex Each protruding part is provided with a first positioning hole 61.

As shown in FIGS. 2-4 , the base 5 includes a base body 51 and a first electrical connection portion 52, the first electrical connection portion 52 is arranged on the base body 51, and the first electrical connection portion 52 is connected to the base body 51. The second electrical connection portion of the fixing member 6 is electrically connected to conduct current to the fixing member 6 . The first electrical connection portion 52 can be located at the four corners of the base body 51, and a fixing piece 6 can be respectively provided at the four corners of the base body 51; or, as shown in FIG. 9 , the fixing piece 6, in this case, The fixing part 6 is ring-shaped, and the second electrical connection part of the fixing part 6 can be provided at the four corners of the base body 51 at the same time, and is electrically connected with the first electrical connection part 52 .

The first electrical connection portion 52 can be formed by injection molding on the base body 51 using an insert molding injection molding technique (Insert Molding, I/M technique for short).

FIG. 11 is a diagram showing the positional relationship among the carrier 1 , the electro-actuating plate 4 , the base 5 and the fixing member 6 , wherein the fixing member 6 adopts the fixing member structure shown in FIG. 9 .

Further, the base body 51 is also provided with a first groove 511; the first electrical connection part 52 includes a first electrical connection surface 521 and a first pin 522, and the first electrical connection surface 521 and the first The pin 522 is electrically connected; wherein, the first electrical connection surface 521 is located in the first groove 511, and the second electrical connection portion of the fixing member 6 is at least partially located in the first groove 511, and The first pin 522 is electrically connected to the first pin 522 through the first electrical connection surface 521 , and the first pin 522 is located on a side of the base body 51 away from the electro-actuating plate 4 . The first electrical connection surface 521 is located in the first groove 511, and the second electrical connection portion of the fixing member 6 is at least partially located in the first groove 511, so that the first electrical connection surface 521 and the fixed The second electrical connection part of the component 6 is in good contact and can realize electrical conduction. Optionally, the notch shape of the first groove 511 is triangular, trapezoidal or pentagonal.

Further, the base 5 also includes a third electrical connection portion 53, the base body 51 is provided with a second groove 514 (such as the octagonal groove in the central area of Figure 2), the second groove 514 is an electrical The accommodating groove of the driving piece 4, the second groove 514 has a bearing area 512; the third electrical connection part 53 includes a second electrical connection surface 531 and a second pin 532 arranged on the bearing area 512, so The second electrical connection surface 531 is electrically connected to the second pin 532; wherein, the second pin 532 is located outside the second groove 514, and the second electrical connection surface 531 is connected to the electrical The second surface of the driving sheet 4 is electrically connected.

When a voltage is applied to the two ends composed of the first pin 522 and the second pin 532, the first pin 522 conducts with the first surface of the electro-actuating sheet 4 through the fixing member 6, and the second pin 532 conducts through the second pin 532. The two electrical connection surfaces 531 are in conduction with the second surface of the electro-actuating sheet 4 . In this way, voltage can be applied to the electro-actuating sheet 4 by applying voltage to the two ends formed by the first pin 522 and the second pin 532 , so that the electro-actuating sheet 4 deforms and drives the carrier 1 to move.

The third electrical connection portion 53 can be formed by injection molding on the base body 51 using I/M technology.

Figure 10 is a positional relationship diagram between the carrier 1, the electro-actuating sheet 4 and the base 5, wherein the second groove 514 has a plurality of carrying areas 512, and each carrying area 512 is covered with an electro-actuating sheet 4.

Further, the base 5 is also provided with a fourth electrical connection portion, the fourth electrical connection portion includes a third electrical connection surface 551, and the third electrical connection surface 551 is spaced apart from the first electrical connection portion 52 . Optionally, an electro-actuated driving sheet 4 is provided at the third electrical connection surface 551, the third electrical connection surface 551 can be electrically connected to the second electrical connection surface 531, and the third electrical connection surface 551 is also connected to the electro-actuated driving sheet 4 The second surface of the first electrical connection portion 52 is electrically connected to the first surface of the electro-actuated sheet 4 . In this way, voltage can be applied to the electro-actuating sheet 4 by applying voltage to the two ends formed by the first pin 522 and the second pin 532 , so that the electro-actuating sheet 4 deforms and drives the carrier 1 to move.

Further, the base 5 can be a square structural member, the number of the first electrical connection part 52 is one, the number of the third electrical connection part 53 is three, and the number of the first electrical connection part and the three The third electrical connection portions 53 are respectively located at four corner regions of the base 5 . An electro-actuating sheet 4 can be provided for each third electrical connection part 53 , and the second electrical connection surface 531 of the third electrical connection part 53 is electrically connected to the second surface of the corresponding electro-actuating sheet 4 . Certainly, in other embodiments of the present invention, the base 5 may be a circular structural member or an octagonal structural member, etc., and the present invention does not specifically limit the shape of the base 5 .

Further, as shown in FIG. 4 , the bottom of the second groove 514 is provided with a first through hole 515 , and the base body 51 is also provided with at least two first positioning columns 513 , at least two of the first positioning columns 513 A positioning column 513 is located outside the second groove 514, and the first positioning column 513 is distributed adjacent to the first electrical connection part 52 or the third electrical connection part 53, and the fixing member 6 A first positioning hole 61 matching the first positioning post 513 is opened; the fixing member 6 is connected to the first positioning post 513 through the first positioning hole 61 . The first positioning hole 61 and the first positioning post 513 can be fixed by heat riveting or the like.

As shown in FIG. 4 , there may be four at least two first positioning columns 513 , and the four first positioning columns 513 are symmetrically distributed, for example, they may be disposed at four corners of the base body 51 . As shown in FIG. 9 , the fixing member 6 is provided with first positioning holes 61 , and the number and positions of the first positioning holes 61 are matched with the number and positions of the first positioning posts 513 .

Further, the groove bottom of the second groove 514 is provided with at least two first bosses, the at least two first bosses are distributed around the first through hole 515, and the first bosses are about The centers of the first through holes 515 are center-symmetrically distributed. When the carrier 1 moves in the accommodating cavity, at least two first bosses can prevent the carrier 1 from colliding with the second groove 514 . Specifically, the at least two first bosses include four first bosses 54, the four first bosses 54 are distributed around the first through hole 515, and the four first bosses 54 The center of the first through hole 515 is center-symmetrically distributed; wherein, the first boss 54 is a rectangular structural member, and the first boss 54 is opened near the first edge of the first through hole 515 There is an arc-shaped notch adapted to the first through hole 515 .

As shown in Fig. 5 and Fig. 6, the carrier 1 includes a third surface 11 facing the electro-actuating sheet 4, the third surface 11 is provided with a second positioning post 111, and the electro-actuating sheet 4 A second positioning hole 41 matching the second positioning post 111 is opened; the electro-actuating plate 4 is connected to the second positioning post 111 through the second positioning hole 41 to realize electro-actuation The connection between the sheet 4 and the carrier 1 . The second positioning post 111 can be a plastic post, and the second positioning hole 41 can be a blind hole or a through hole. The second positioning post 111 is connected to the second positioning hole 41 by heat riveting or glue dispensing.

As shown in Fig. 4 and Fig. 5, the third surface 11 is provided with a second boss 112, and the base 5 also includes a first boss 54 opposite to the second boss 112; optionally, The sum of the first height of the first boss and the second height of the second boss is greater than or equal to the thickness of the electro-actuating sheet 4, so that when the carrier 1 moves toward the base 5, the carrier 1 is prevented from 1 Excessive extrusion of the electro-actuating sheet 4 causes damage to the electro-actuating sheet 4.

Optionally, as shown in FIG. 6 , the electro-actuating sheet 4 includes a main body structure, and terminals formed by extending from the main body structure. The width of the terminal is larger than the width of the main body structure. Specifically, the terminals can be trapezoidal, triangular or rectangular. Structure, the main structure can be a rectangular structure. The second positioning hole 41 is located on the main structure, specifically, it may be located on an end of the main structure away from the terminal. The carrier 1 is in contact with a part of the main structure, and the terminals protrude from the edge of the carrier 1 .

As shown in FIG. 7 , the carrier 1 also includes a fourth surface 12 facing the elastic member 3 , and the fourth surface 12 is provided with a third boss 121 to prevent the carrier 1 from colliding when moving toward the housing 2 . or extrude into housing 2.

As shown in FIG. 7 , the carrier 1 is provided with a through hole, and the edge of the through hole is provided with a thread structure, and the carrier 1 can be connected with a functional device through the thread structure. The four corners of the carrier 1 are provided with stepped platform structures. Optionally, the carrier may be an octagonal structural member.

As shown in FIG. 8 , the elastic member 3 includes a bracket 31 and an elastic portion 32; connected. The carrier 1 can be suspended in the accommodating cavity by the elastic member. Optionally, the elastic part 32 has an elastic winding part, for example, the elastic winding part can be arranged at a corner position in the bracket 31 . Both ends of the elastic winding part are connected to the bracket 31, and the winding parts of the elastic winding part do not intersect each other, thereby forming a hollow area. In FIG. 8 , the bracket 31 includes four corner positions, and the four corner positions are respectively provided with four elastic winding parts.

As shown in Figures 7 and 8, the elastic portion 32 is provided with a second through hole, and the edge of the second through hole is provided with a plurality of first notches 321, and the plurality of first notches 321 are related to the first notch. The center of the two through holes is distributed symmetrically; the carrier 1 includes a plurality of connection protrusions 13, the number of the connection protrusions 13 is the same as the number 321 of the first notch, each of the connection protrusions 13 passes through a The first notch 321 is connected to the elastic portion 32 . Specifically, the connection between the convex portion 13 and the first notch 321 may be a detachable connection, specifically, it may be a clamping connection. Further, glue can also be used to fix the portion of the carrier 1 in contact with the edge of the second through hole, so as to further connect the carrier 1 and the elastic portion 32 fixedly.

As shown in FIG. 12 , the housing 2 includes at least two fourth bosses 21 , and the fourth bosses 21 are used to carry the bracket 31 . In Fig. 12, the housing 2 includes four fourth bosses 21, which are respectively arranged at the four corners of the housing. These four fourth bosses 21 carry the bracket 31, and the fourth bosses 21 and The brackets 31 can be fixed by glue, and FIG. 13 shows the positional relationship between the elastic member 3 and the housing 2 .

The housing 2 also includes a grounding pin 22, which is used as a grounding terminal of the driving device to reduce static electricity generated during the operation of the driving device.

FIG. 14 is a diagram showing the positional relationship among the base 5 , the carrier 1 and the elastic member 3 . FIG. 15 is a schematic structural diagram of adding a housing 2 to the structure shown in FIG. 14 . FIG. 16 is a schematic cross-sectional structure diagram of the driving device provided by this embodiment.

Further, the electro-actuated driving piece 4 is an ion-conducting driving piece, and the ion-conducting driving piece includes an ion-exchange resin layer and a first electrode layer and a second electrode layer respectively arranged on two opposite surfaces of the ion-exchange resin layer. The electrode layer has a polymer electrolyte in the ion exchange resin layer.

Specifically, the electro-actuating plate 4 can be made of ion-exchange polymer metal composite (IPMC for short). IPMC material is a new type of electrically actuated functional material, which uses an ion exchange resin layer (such as fluorocarbon polymer, etc.) layer and the second electrode layer, as shown in FIG. 17, and the symbols A and B in FIG. 17 are the first electrode layer and the second electrode layer, respectively. The ion exchange resin layer includes a polymer electrolyte, which contains cations and anions. The positions and quantities of cations and anions in Figure 17 are only for illustration and do not represent the actual situation.

As shown in Figure 18 and Figure 19, when a voltage is applied to the IPMC in the thickness direction, the hydrated cations in the polymer electrolyte will move to the cathode side, causing the difference in swelling between the anode and cathode sides of the IPMC, resulting in deformation and moving to the anode In this way, the bending degree of the IPMC can be controlled by controlling the energized voltage or current of the IPMC, so that the IPMC can be displaced in the lateral direction.

IPMC material is a new type of driving material, which has the advantages of light driving weight, large displacement and deformation, and low driving voltage. The advantages of using IPMC in the driving device are obvious. For example, IPMC is a non-magnetic material and will not generate magnetic interference; the displacement and velocity generated by IPMC deformation are proportional to the thickness of IPMC, and the force generated by IPMC deformation is proportional to the thickness of IPMC. The cube grows proportionally. Therefore, the thickness of the IPMC can be set according to the actual situation, so as to achieve the required displacement, velocity and strength of the deformation of the IPMC.

Further, when the voltage applied to the ion-conducting driving plate is the first voltage, the ion-conducting driving plate drives the carrier 1 to move along the first direction; when the voltage applied to the ion-conducting driving plate In the case of the second voltage, the ion conduction driving plate drives the carrier 1 to move in the second direction; wherein, the polarity of the first voltage and the second voltage are opposite, and the first direction is opposite to the polarity of the second voltage. The second directions are mutually opposite directions. By applying voltages with opposite polarities to the ion-conducting driving plate, the ion-conducting driving plate can drive the carrier 1 to move along the first direction or the second direction. The first direction can be the direction in which the carrier 1 moves toward the housing 2, and the second direction can be the direction in which the carrier 1 moves away from the housing 2; the first direction can be the direction in which the carrier 1 moves away from the housing 2, and the second direction can be The direction in which the carrier 1 moves towards the housing 2 .

Further, under the condition that the voltage applied to the ion conduction drive plate is the first voltage, the ion conduction drive plate drives the carrier 1 to move a first distance along the first direction; When the voltage of the plate is the third voltage, the ion conduction driving plate drives the carrier 1 to move the second distance along the first direction; wherein, the first voltage and the third voltage have the same polarity, and the The third voltage is greater than the first voltage, and the first distance is different from the second distance. The second distance may be greater than the first distance. When the carrier 1 needs to move a larger distance, the carrier 1 can be driven to move a larger distance by applying a larger voltage to the ion-conducting drive plate; The voltage is used to drive the carrier 1 to move a small distance. There is a corresponding relationship between the voltage applied to the ion-conducting driving plate and the moving distance of the carrier 1 , and the voltage applied to the ion-conducting driving plate can be determined according to the corresponding relationship when the moving distance of the carrier 1 is determined.

Further, when the voltage applied to the ion conduction driving plate is the first voltage, the ion conduction driving plate drives the carrier 1 to move along the first direction at a first speed; When the voltage of the driving plate is the third voltage, the ion-conducting driving plate drives the carrier 1 to move along the first direction at a second rate; wherein, the polarity of the first voltage and the third voltage are the same, And the third voltage is greater than the first voltage, and the first rate is different from the second rate. The second rate may be less than the first rate. When the moving speed of the carrier 1 is required to be relatively large, the carrier 1 can be driven to move at a relatively high speed by applying a relatively large voltage to the ion-conducting driving plate; A small voltage is used to drive the carrier 1 to move at a small speed. There is a corresponding relationship between the voltage applied to the ion-conducting driving plate and the moving speed of the carrier 1 , and the voltage applied to the ion-conducting driving plate can be determined according to the corresponding relationship when the moving speed of the carrier 1 is determined.

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. Should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims (17)

1. A driving device is characterized by comprising a carrier, a shell, an elastic piece, an electric drive sheet and a base;

the shell and the base are matched to form an accommodating cavity, and the elastic piece, the carrier and the electric drive sheet are sequentially arranged in the accommodating cavity;

the carrier is movably connected with the shell through the elastic piece and is used for bearing a functional device;

the first end of the electrodrive sheet is connected with the base, and the second end of the electrodrive sheet is connected with the carrier;

when voltage is applied to the electro-driving sheet, the electro-driving sheet deforms and drives the carrier to move, the carrier comprises a third surface facing the electro-driving sheet, a second positioning column is arranged on the third surface, and a second positioning hole matched with the second positioning column is formed in the electro-driving sheet;

the electric drive sheet is connected with the second positioning column through the second positioning hole, the third surface is provided with a second boss, and the base further comprises a first boss opposite to the second boss;

the device comprises a first boss, a second boss and a fixing piece, wherein the sum of the first height of the first boss and the second height of the second boss is larger than or equal to the thickness of an electric drive sheet, the fixing piece is located in an accommodating cavity, the electric drive sheet is arranged between the fixing piece and a base, the fixing piece is electrically connected with a first surface of the electric drive sheet, a second surface of the electric drive sheet is electrically connected with the base, the first surface and the second surface are distributed oppositely, the electric drive sheet comprises a main body structure and a terminal formed by extending according to the main body structure, the width of the terminal is larger than that of the main body structure, the terminal protrudes out of the edge of a carrier, a second positioning hole is located at one end, far away from the terminal, of the main body structure, and the fixing piece is arranged on the terminal in a pressing mode so that the electric drive sheet is arranged between the fixing piece and the base.

2. The driving device as claimed in claim 1, wherein the base includes a base body and a first electrical connection portion, the first electrical connection portion is disposed on the base body, and the first electrical connection portion is electrically connected to the second electrical connection portion of the fixing member.

3. The driving device as claimed in claim 2, wherein the base body further defines a first recess;

the first electric connection part comprises a first electric connection surface and a first pin, and the first electric connection surface is electrically connected with the first pin;

the first electric connection surface is positioned in the first groove, and the second electric connection part of the fixing piece is at least partially positioned in the first groove and is electrically connected with the first pin through the first electric connection surface.

4. The driving device as claimed in claim 2, wherein the base further comprises a third electrical connection portion, the base body defines a second recess, and the second recess has a bearing area;

the third electric connection part comprises a second electric connection surface and a second pin which are arranged in the bearing area, and the second electric connection surface is electrically connected with the second pin;

the second pin is positioned outside the second groove, and the second electric connection surface is electrically connected with the second surface of the electric drive sheet.

5. The drive of claim 4, wherein the base body is further provided with a fourth electrical connection, the fourth electrical connection comprising a third electrical connection face, the third electrical connection face being spaced from the first electrical connection face.

6. The driving device as claimed in claim 5, wherein the base is a square structural member, the number of the first electrical connection portions is one, the number of the third electrical connection portions is three, and the first electrical connection portions and the three third electrical connection portions are respectively located at four corner regions of the base.

7. The driving device according to claim 4, wherein a first through hole is formed in a bottom of the second groove, the base body is further provided with at least two first positioning posts, the at least two first positioning posts are located outside the second groove, the first positioning posts are distributed adjacent to the first electrical connection portion or the third electrical connection portion, and the fixing member is provided with a first positioning hole matched with the first positioning posts;

the fixing piece is connected with the first positioning column through the first positioning hole.

8. The driving device as claimed in claim 7, wherein the bottom of the second groove is provided with at least two first bosses, the at least two first bosses are distributed around the first through hole, and the at least two first bosses are distributed with central symmetry about the center of the first through hole.

9. The driving device as claimed in claim 8, wherein the at least two first bosses comprise four first bosses, the four first bosses are distributed around the first through hole, and the four first bosses are distributed in a central symmetry manner about a center of the first through hole;

the first boss is a rectangular structural member, and an arc-shaped opening matched with the first through hole is formed in the first edge, close to the first through hole, of the first boss.

10. The drive of claim 1, wherein the carrier further comprises a fourth surface facing the resilient member, the fourth surface being provided with a third boss.

11. The drive device according to claim 1, wherein the elastic member includes a bracket and an elastic portion;

the support is fixedly arranged on one side, facing the carrier, of the shell, and the elastic part is connected with the carrier.

12. The driving device as claimed in claim 11, wherein the elastic portion defines a second through hole, and a plurality of first slits are defined in an edge of the second through hole, and the plurality of first slits are symmetrically distributed about a center of the second through hole;

the carrier comprises a plurality of connecting convex parts, the number of the connecting convex parts is the same as that of the first gaps, and each connecting convex part is connected with the elastic part through one first gap.

13. The driving device according to claim 1, wherein the electrokinetic driving sheet is an ion conductive driving sheet comprising an ion exchange resin layer and a first electrode layer and a second electrode layer respectively disposed on opposite surfaces of the ion exchange resin layer, and wherein the ion exchange resin layer has a polymer electrolyte therein.

14. The drive of claim 13, wherein the ion-conducting driver plate drives the carrier to move in a first direction when the voltage applied to the ion-conducting driver plate is a first voltage;

the ion-conducting driving plate drives the carrier to move in a second direction when the voltage applied to the ion-conducting driving plate is a second voltage;

the first voltage and the second voltage have opposite polarities, and the first direction and the second direction are opposite directions.

15. The drive of claim 13, wherein the ion-conducting driver plate drives the carrier in a first direction a first distance in the event that the voltage applied to the ion-conducting driver plate is a first voltage;

the ion-conducting driver plate drives the carrier to move a second distance in the first direction when the voltage applied to the ion-conducting driver plate is a third voltage;

wherein the first voltage and the third voltage have the same polarity, the third voltage is greater than the first voltage, and the first distance is different from the second distance.

16. The drive of claim 13, wherein the ionically conductive driver plate drives the carrier in a first direction at a first rate in the event that the voltage applied to the ionically conductive driver plate is a first voltage;

the ion conducting driver plate driving the carrier in a first direction at a second rate in the event that the voltage applied to the ion conducting driver plate is a third voltage;

wherein the first voltage and the third voltage have the same polarity, the third voltage is greater than the first voltage, and the first rate is different from the second rate.

17. An electronic device characterized by comprising the drive apparatus of any one of claims 1-16.

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