CN115103098A

CN115103098A - Piezoelectric motor, camera module and electronic equipment

Info

Publication number: CN115103098A
Application number: CN202210707460.2A
Authority: CN
Inventors: 刘钦雷
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2022-06-21
Filing date: 2022-06-21
Publication date: 2022-09-23

Abstract

The application discloses piezoelectric motor, module and electronic equipment make a video recording includes: the shell is provided with an accommodating groove, a conductive medium is filled in the accommodating groove, and the shell is provided with an opening communicated with the accommodating groove; the piezoelectric body is arranged in the accommodating groove; the piezoelectric body is telescopic in the extending direction of the opening and is used for bearing a carrier, and at least part of the piezoelectric body is electrically connected with the conductive medium; a first conductor electrically connected to the piezoelectric body, the first conductor serving as a first electrode; a second conductor in contact with the conductive medium, the second conductor serving as a second electrode; and under the condition that the piezoelectric body is electrified, the piezoelectric body deforms, and the carrier is driven to move by the piezoelectric body.

Description

Piezoelectric motor, camera module and electronic equipment

Technical Field

The application belongs to the technical field of electronic products, concretely relates to piezoelectric motor, camera module and electronic equipment.

Background

With the development of smart phones, consumers have higher and higher requirements on photographing performance; high pixel, large aperture, fast focusing, optical anti-shake, multi-camera, etc. become the mainstream development trend of mobile phone cameras.

At present, the mainstream focusing motor is a voice coil motor, which is a device for converting electric energy into mechanical energy, and the voice coil motor can realize linear motion or small-angle swing. But the drive power of voice coil motor is little and the structure is complicated, and thrust can't satisfy user's demand, is not convenient for install on the cell-phone, has influenced the further promotion of cell-phone performance of shooing.

Disclosure of Invention

The application aims at providing a piezoelectric motor, make a video recording module and electronic equipment, solves the problem that current focusing motor thrust can't satisfy the user's demand at least.

In order to solve the technical problem, the present application is implemented as follows:

in a first aspect, an embodiment of the present application provides a piezoelectric motor, including:

the shell is provided with an accommodating groove, a conductive medium is filled in the accommodating groove, and the shell is provided with an opening communicated with the accommodating groove;

the piezoelectric body is arranged in the accommodating groove; the piezoelectric body is telescopic in the extending direction of the opening and is used for bearing a carrier, and at least part of the piezoelectric body is electrically connected with the conductive medium;

a first conductor electrically connected to the piezoelectric body, the first conductor serving as a first electrode;

a second conductor in contact with the conductive medium, the second conductor serving as a second electrode;

and under the condition that the piezoelectric body is electrified, the piezoelectric body deforms, and the carrier is driven to move by the piezoelectric body.

In a second aspect, an embodiment of the present application provides a camera module, including:

a lens assembly;

a piezoelectric motor; the piezoelectric body is connected with the lens component in an abutting mode and used for bearing the lens component.

In a third aspect, an embodiment of the present application provides an electronic device, including:

an apparatus main body;

the camera shooting module is arranged on the equipment main body and is the camera shooting module in any one of the aspects.

In the embodiment of the application, the conductive medium and the piezoelectric body are arranged in the accommodating groove of the shell, the first conductor serving as the first electrode is electrically connected with the piezoelectric body, and the second conductor serving as the second electrode is electrically connected with the conductive medium, so that the piezoelectric body can deform under the condition that the piezoelectric body is electrified, and the purpose of driving the lens assembly on the carrier is achieved by driving the carrier to move through the piezoelectric body. In the whole process, the current can control the tension change of the piezoelectric body in the conductive medium, and the driving force is provided through the tension change, so that the deformation of the piezoelectric body can be accurately controlled, and the lens is driven to move to achieve the purpose of zooming of the lens assembly.

Additional aspects and advantages of the present application 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 present application.

Drawings

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

FIG. 1 is a schematic view of a liquid metal layer in a piezoelectric motor in a contracted state according to the present application;

FIG. 2 is a schematic diagram of a piezoelectric motor with a liquid metal layer in an extended state according to the present application;

FIG. 3 is a schematic diagram of a camera module according to the present application with a liquid metal layer in an extended state;

FIG. 4 is a schematic diagram of a camera module according to the present application with a liquid metal layer in a contracted state;

FIG. 5 is a schematic diagram of a liquid metal layer in a camera module according to the present application driven in time sequence;

fig. 6 is a schematic diagram of a camera module according to the present application provided with two piezoelectric motors;

fig. 7 is a schematic diagram of a camera module according to the present application provided with three piezoelectric motors;

fig. 8 is a schematic diagram of a camera module according to the present application provided with four piezoelectric motors;

reference numerals:

100, a piezoelectric motor; 101. a housing; 1010. a containing groove; 1011. a conductive medium; 1012. an opening; 102. a piezoelectric body; 103. a first electrical conductor; 104. a second electrical conductor; 105. a power supply component; 106. a first suction attachment; 107. a second adsorption member; 108. a first connecting glue layer; 109. a second connecting glue layer; 110. a seal member; 200. a lens assembly.

Detailed Description

Reference will now be made in detail to the embodiments of the present application, 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 functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The features of the terms first and second in the description and in the claims of the present application may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality" means two or more unless otherwise specified.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

The piezoelectric motor proposed according to an embodiment of the present application is described below with reference to fig. 1 and 2. The piezo motor 100 is used to drive the carrier to move, and the carrier may be a component that needs to move on the electronic device, such as a lens assembly in the electronic device.

Wherein, piezoelectric motor 100 includes: a case 101, a piezoelectric body 102, a first conductor 103, and a second conductor 104. The housing 101 is hollow, a receiving groove 1010 is formed in the housing 101, and an opening 1011 is formed in the housing 101 and communicates with the receiving groove 1010. The conductive medium 1011 is filled in the receiving groove 1010, and an electrolyte solution (e.g., NaOH solution) may be used for the conductive medium 1011. The piezoelectric body 102 is disposed in the receiving groove 1010, and since the receiving groove 1010 is filled with the conductive medium 1011, at least a portion of the piezoelectric body 102 is in contact with the conductive medium 1011, that is, the piezoelectric body 102 is electrically connected to the conductive medium 1011. One end of the piezoelectric body 102 is stretchable in the extending direction of the opening 1012 for carrying the carrier. The first conductor 103 is electrically connected to the piezoelectric body 102, and the first conductor 103 serves as a first electrode. The second conductor 104 is electrically connected to the conductive medium 1011, and the second conductor 104 serves as a second electrode. The first conductor 103 and the second conductor 104 are used to connect the power supply module 105, and when the piezoelectric body 102 is energized, the piezoelectric body 102 deforms, and the carrier is driven by the piezoelectric body 102 to move.

Specifically, the first conductor 103 is provided as a first electrode, and the second conductor 104 is provided as a second electrode, whereby the piezoelectric body 102 can be energized. As shown in fig. 1, when the piezoelectric body 102 is energized, the piezoelectric body 102 undergoes an oxidation reaction or a reduction reaction in the conductive medium 1011 according to the direction of the current, the surface tension of the piezoelectric body 102 in the conductive medium 1011 changes during the reaction, the piezoelectric body 102 is driven to deform by the tension change, and since the piezoelectric body 102 is used for carrying a carrier, the piezoelectric body 102 can directly push the carrier to move during the switching of the state of the piezoelectric body 102.

When the piezoelectric body 102 is powered off, as shown in fig. 2, the surface tension of the piezoelectric body 102 in the conductive medium 1011 increases, the piezoelectric body 102 is driven to deform by the tension change, and since the piezoelectric body 102 is used for bearing the carrier, the piezoelectric body 102 is abutted against the carrier, and the piezoelectric body 102 can directly push the carrier to reset.

In the embodiment of this application, through set up conducting medium and piezoelectricity in the storage tank at the casing to the first electric conductor that will regard as the first electrode is connected with piezoelectricity electricity, will regard as the second electric conductor of second electrode to be connected with conducting medium electricity, makes under the circumstances that piezoelectricity circular telegram, and deformation can take place for the piezoelectricity, in order to drive the carrier motion through piezoelectricity, realizes the purpose of the lens subassembly on the drive carrier. In the whole process, the current can control the tension change of the piezoelectric body in the conductive medium, and the driving force is provided through the tension change, so that the deformation of the piezoelectric body can be accurately controlled, and the lens is driven to move to achieve the purpose of zooming the lens assembly.

In one example, as shown in fig. 1 and 2, the piezoelectric body 102 includes: a liquid metal layer. The liquid metal layer is a structure formed by a plurality of liquid metal droplets, and the liquid metal layer is disposed in the accommodation groove 1010. In order to ensure that the liquid metal layer is electrified, at least a part of the liquid metal layer is arranged in the conductive medium 1011 in the accommodating groove 1010, and the liquid metal layer is electrically connected with the first conductor 103; the first conductor 103 serves as a first electrode. The second conductor 104 is electrically connected to the conductive medium 1011, and the second conductor 104 serves as a second electrode. The first conductor 103 and the second conductor 104 are used for connecting the power supply assembly 105, and the liquid metal layer is deformed and drives the carrier to move through the liquid metal layer when the liquid metal layer is electrified.

In this embodiment, the liquid metal layer has a contracted state and an expanded state. One end of the liquid metal layer can stretch in the extending direction of the opening, and the liquid metal layer directly bears the carrier. The liquid metal layer is switched between the extended state and the retracted state upon energization of the liquid metal layer.

Under the condition that the liquid metal layer is electrified, as shown in fig. 1, the liquid metal layer is subjected to oxidation reaction or reduction reaction in the conductive medium 1011, the surface tension of the liquid metal layer in the conductive medium 1011 changes, the liquid metal layer is driven to deform through the tension change, the liquid metal layer is switched between an extension state and a contraction state, and the liquid metal layer is used for bearing a carrier, is abutted against the carrier, and can directly push the carrier to move in the switching process of the state of the liquid metal layer.

In general, when the liquid metal layer is powered off, as shown in fig. 2, the surface tension of the liquid metal layer in the conductive medium 1011 increases, the liquid metal layer is driven to deform by the tension change, the liquid metal layer is switched from a contracted state to an extended state, and since the liquid metal layer is used for carrying the carrier, the liquid metal layer is abutted to the carrier, and the carrier can be directly pushed by the liquid metal layer to reset during the switching of the state of the liquid metal layer.

Wherein, liquid metal layer includes: a gallium-based liquid metal. Gallium-based liquid metals have some of the characteristics of both liquids and solids, including high electrical/thermal conductivity, good flexibility, very low toxicity, and low volatility. The solid solution alloy formed by the gallium-based liquid metal can be liquid at room temperature, the surface tension is more than 600mN/m, and after oxidation, the surface tension of the liquid metal can be reduced to be close to zero. That is, the gallium-based liquid metal, when placed on a flat surface, will remain an almost perfect sphere, without being subjected to external forces. By adjusting parameters such as electrode voltage, electrolyte solution, droplet quality and the like, factors such as metal surface tension, deformation speed, droplet viscosity and the like can be adjusted, so that the stretching and shrinking of the liquid metal layer can be accurately controlled.

In a specific embodiment, the gallium-based liquid metal forms a liquid bridge in the conductive medium 1011, when the two electrodes provide an oxidation voltage of 4V, the gallium-based liquid metal changes from a near spherical shape to a flat mud shape, the acting force of the liquid bridge on the upper substrate is downward, and the height of the liquid bridge is reduced; when the reduction voltage provided by the electrode is-0.5V, the gallium-based liquid metal is recovered to be approximately spherical from the flat shape, the acting force of the liquid bridge on the upper substrate is upward, and the gallium-based liquid metal is recovered to the initial height. Under the drive of-0.5V to 4V voltage, the gallium-based liquid metal can provide the carrier with about 20mN pull force, 40mN push force and over 1000 μm drive stroke. The gallium-based liquid metal provides driving force by the change of surface tension in the oxidation and reduction processes, and the piezoelectric motor has the advantages of large thrust, large stroke, high response speed, low driving voltage, low power consumption, no magnetic field, no magnetic interference, simple structure and no heat generation.

In one example, the piezoelectric motor further comprises: a power supply component 105. One end of the power supply module 105 is electrically connected to the first conductor 103, and the other end of the power supply module 105 is electrically connected to the second conductor 104.

When the first conductor 103 is a cathode, the cathode of the power module 105 is electrically connected to the first conductor 103, the anode of the power module 105 is electrically connected to the second conductor 104,

when the second conductor 104 is a cathode, the anode of the power module 105 is electrically connected to the first conductor 103, and the cathode of the power module 105 is electrically connected to the second conductor 104.

In this embodiment, the power supply module 105 includes: a power supply and a voltage regulating mechanism. The voltage regulating mechanism can adopt a voltage control chip for regulating the current direction and the voltage. The power supply provides power supply for the whole pressure point motor.

When the anode of the power supply is electrically connected to the first conductor 103, one end of the voltage adjustment mechanism is electrically connected to the first conductor 103, and the other end of the voltage adjustment mechanism is electrically connected to the second conductor 104 via the power supply. Therefore, after the voltage regulating mechanism is controlled to be powered on, the liquid metal layer is subjected to oxidation reaction in the conductive medium 1011, the surface tension of the liquid metal layer in the conductive medium 1011 is reduced, the liquid metal layer is converted into a contraction state from an extension state, and the liquid metal layer can directly push the carrier to move downwards.

When the cathode of the power supply is electrically connected to the first conductor 103, one end of the voltage adjustment mechanism is electrically connected to the second conductor 104, and the other end of the voltage adjustment mechanism is electrically connected to the first conductor 103 via the power supply. Therefore, after the voltage regulating mechanism is controlled to be electrified, the liquid metal layer is subjected to a reduction reaction in the conductive medium 1011, the surface tension of the liquid metal layer in the conductive medium 1011 is increased, the liquid metal layer is converted from a contraction state to an extension state, and the liquid metal layer can directly push the carrier to move upwards.

In general, as shown in fig. 2, after the voltage regulating mechanism is controlled to be turned off, the surface tension of the liquid metal layer in the conductive medium 1011 increases, the liquid metal layer is converted from a contracted state to an extended state, and the liquid metal layer can directly push the carrier to reset upwards. That is, in the initial state, the liquid metal layer is in the stretched state, and the two states are reversibly switched.

Based on the above embodiment, as shown in fig. 1 and fig. 2, in order to lock the position of the liquid metal layer, the piezoelectric motor further includes: a first suction attachment 106 and a second suction attachment 107. The first suction member 106 is provided at one end of the piezoelectric body 102, and the first suction member 106 is electrically connected to the first conductor 103. The second adsorption member 107 is disposed at the other end of the piezoelectric body 102, and the second adsorption member 107 is used for carrying a carrier.

In this embodiment, the first absorbing element 106 and the second absorbing element 107 both adopt absorbing copper sheets, in order to prevent short circuit, an insulating layer is disposed on a surface of the first absorbing element 106 in contact with the conductive medium 1011, the insulating layer may adopt rubber or other insulating materials, so as to prevent the first conductive body 103 from being directly communicated with the conductive medium 1011, and the first absorbing element 106 and the second absorbing element 107 can also serve as conductive electrodes of the piezoelectric body 102 while absorbing the piezoelectric body 102 by the first absorbing element 106 and the second absorbing element 107. The first absorbing part 106 is disposed at the bottom of the receiving groove 1010 and located at the bottom of the piezoelectric body 102, the first absorbing part 106 is electrically connected to the first conductor 103, and the second absorbing part 107 is disposed at the top of the receiving groove 1010 and located at the top of the piezoelectric body 102.

As shown in fig. 1, when the piezoelectric body 102 is energized, the piezoelectric body 102 is locked between the first absorbing part 106 and the second absorbing part 107, the piezoelectric body 102 undergoes an oxidation reaction or a reduction reaction in the conductive medium 1011, the surface tension of the piezoelectric body 102 in the conductive medium 1011 changes, the piezoelectric body 102 is driven to deform by the tension change, and since the piezoelectric body 102 carries the carrier through the second absorbing part 107, the second absorbing part 107 abuts against the carrier, the piezoelectric body 102 can directly push the carrier to move through the second absorbing part 107 during the process of switching the state of the piezoelectric body 102.

As shown in fig. 2, when the piezoelectric body 102 is powered off, the piezoelectric body 102 is locked between the first absorbing part 106 and the second absorbing part 107, the surface tension of the piezoelectric body 102 in the conductive medium 1011 increases, the piezoelectric body 102 is driven to deform by the tension change, the piezoelectric body 102 is switched from the contracted state to the extended state, the carrier is carried by the piezoelectric body 102 through the second absorbing part 107, the second absorbing part 107 abuts against the carrier, and the carrier can be directly pushed by the piezoelectric body 102 through the second absorbing part 107 to reset during the switching of the state of the piezoelectric body 102.

To define the pushing direction, the piezoelectric motor further comprises: a first tie glue layer 108 and a second tie glue layer 109. The first connecting adhesive layer 108 is connected between the first suction attachment 106 and the bottom surface of the accommodating groove 1010; the first conductor 103 is arranged in the first adhesive layer 108. One end of the second adhesive layer 109 is connected to the second absorption member 107, and the other end of the second adhesive layer 109 is used for connecting the carrier. Wherein, the side of the first connection adhesive layer 108 close to the first suction attachment 106 is provided with a mounting groove corresponding to the first conductor 103, after the first connection adhesive layer 108 is connected, the mounting groove and the first suction attachment 106 form a sealed cavity, the first conductor 103 is arranged in the sealed cavity, and the first conductor 103 can be prevented from being directly connected with the conductive medium 1011.

In this embodiment, the first adhesive layer 108 is used for fixing the first suction attachment 106, the first adhesive layer 108 is connected to the bottom surface of the first suction attachment 106, and the first adhesive layer 108 is located between the first suction attachment 106 and the bottom surface of the accommodating groove 1010. The first conductor 103 is disposed in the mounting groove on the first connection glue layer 108. The second connection adhesive layer 109 is used for fixing the carrier, the second connection adhesive layer 109 is connected to the top surface of the second absorption member 107, and the second connection adhesive layer 109 is located between the second connection adhesive layer 109 and the carrier. During the switching process of the state of the piezoelectric body 102, the carrier can be directly pushed by the piezoelectric body 102 through the second connection glue layer 109 to move.

In other embodiments, the first adhesive layer 108 can also be disposed on the side of the first suction attachment 106, and the first adhesive layer 108 is located between the first suction attachment 106 and the sidewall of the receiving groove 1010. The second adhesive layer 109 is attached to the top or side of the second suction member 107.

The shapes of the first connection adhesive layer 108 and the second connection adhesive layer 109 can be adjusted as needed, for example, the first connection adhesive layer 108 and the second connection adhesive layer 109 can be arranged in a cylinder, a cuboid, or other special-shaped structures to adjust the direction of the pushed carrier.

Further, the piezoelectric motor further includes: a seal 110. The sealing element 110 is connected to the opening 1012 in a sealing manner, a mounting hole matched with the second connection adhesive layer 109 is formed in the sealing element 110, the second connection adhesive layer 109 penetrates through the mounting hole, and the mounting hole is connected to the side wall of the second connection adhesive layer 109.

In this embodiment, the sealing element 110 is a retractable packaging film, the sealing element 110 is integrally connected to the opening 1012, in order to facilitate pushing the carrier, a mounting hole adapted to the shape of the second connection adhesive layer 109 is formed in the sealing element 110, the second connection adhesive layer 109 penetrates through the mounting hole, and the mounting hole is connected to the sidewall of the second connection adhesive layer 109. By providing the sealing member 110 in the opening 1012, the problem of leakage of the conductive medium 1011 when the piezoelectric motor is moving is effectively avoided.

The embodiment of the present application further provides a camera module, as shown in fig. 3 to 5, including: a lens assembly 200 and a piezo motor 100.

As shown in fig. 1 and 2, the piezoelectric motor 100 is used to drive the lens assembly 200. The piezoelectric motor 100 includes: a case 101, a piezoelectric body 102, a first conductor 103, and a second conductor 104. The housing 101 is hollow, a receiving groove 1010 is formed in the housing 101, and an opening 1011 is formed in the housing 101 and communicates with the receiving groove 1010. The accommodation groove 1010 is filled with a conductive medium 1011, and the conductive medium 1011 may be an electrolyte solution. The piezoelectric body 102 is disposed in the receiving groove 1010, and since the receiving groove 1010 is filled with the conductive medium 1011, at least a portion of the piezoelectric body 102 is in contact with the conductive medium 1011, that is, the piezoelectric body 102 is electrically connected to the conductive medium 1011. The piezoelectric body 102 abuts against the lens assembly 200 for carrying the lens assembly 200. One end of the piezoelectric body 102 is retractable in the extending direction of the opening 1012 for carrying the lens assembly 200, and the piezoelectric body 102 of the piezoelectric motor 100 extends out of the accommodating groove 1010 to abut against or be connected with the lens assembly 200. The first conductor 103 is electrically connected to the piezoelectric body 102, and the first conductor 103 serves as a first electrode. The second conductor 104 is electrically connected to the conductive medium 1011, and the second conductor 104 serves as a second electrode. The first conductor 103 and the second conductor 104 are used to connect the power module 105, and when the piezoelectric body 102 is energized, the piezoelectric body 102 deforms, and the lens module 200 is moved by the piezoelectric body 102.

Specifically, the piezoelectric body 102 can be energized by providing the first conductor 103 as a first electrode and the second conductor 104 as a second electrode.

As shown in fig. 1, when the piezoelectric body 102 is energized, the piezoelectric body 102 undergoes an oxidation reaction or a reduction reaction in the conductive medium 1011 according to the direction of the current, the surface tension of the piezoelectric body 102 in the conductive medium 1011 changes during the reaction, the piezoelectric body 102 is driven to deform by the tension change, and since the piezoelectric body 102 is used for carrying a carrier, the piezoelectric body 102 can directly push the carrier to move during the switching of the state of the piezoelectric body 102.

In order to facilitate the control of the lens assembly 200 in the camera module, at least two piezoelectric motors 100 may be provided in the camera module, and as shown in fig. 6 to 8, two, three or four piezoelectric motors 100 may be provided to control the focusing of the lens assembly 200. Each piezoelectric body 102 of the piezoelectric motor 100 extends out of the corresponding accommodating groove 1010 to be connected with a part on the lens assembly 200.

As shown in fig. 6, when two piezo motors 100 are provided to control the lens assembly 200 to focus, the piezo 102 of 1 to 2 piezo motors 100 may be simultaneously driven to deform, thereby pushing the lens assembly 200 to move.

As shown in fig. 7, when three piezoelectric motors 100 are provided to control the lens assembly 200 to focus, the piezoelectric bodies 102 of 1 to 3 piezoelectric motors 100 may be simultaneously driven to deform, thereby pushing the lens assembly 200 to move.

As shown in fig. 8, when four piezoelectric motors 100 are provided to control the lens assembly 200 to focus, the piezoelectric bodies 102 of 1 to 4 piezoelectric motors 100 may be simultaneously driven to deform, thereby pushing the lens assembly 200 to move.

Specifically, during the operation of the camera module, the piezoelectric members 102 in the piezoelectric motor 100 can be driven simultaneously or in a time sequence, so that the lens assembly 200 can be rotated by a certain angle in the axial direction, and the piezoelectric members 102 can operate simultaneously, thereby effectively avoiding the problem of jitter during the movement of the lens assembly 200.

As shown in fig. 3, when the piezoelectric bodies 102 in the plurality of piezoelectric motors 100 are in an extended state, the plurality of piezoelectric bodies 102 synchronously drive the lens assembly 200 to move upward. As shown in fig. 3, when the piezoelectric bodies 102 in the plurality of piezoelectric motors 100 are in a contracted state, the plurality of piezoelectric bodies 102 synchronously drive the lens assembly 200 to move downward. As shown in fig. 4, when the piezoelectric members 102 of the plurality of piezoelectric motors 100 or the piezoelectric members 102 of the piezoelectric motors 100 are driven in time series, the lens assembly 200 can be rotated in the axial direction by a certain angle.

In addition, a plurality of piezoelectric bodies 102 may be disposed in the accommodating groove, and the plurality of piezoelectric bodies 102 may operate synchronously or separately, so as to avoid the problem of jitter during the movement of the lens assembly 200 when a single piezoelectric motor 100 is disposed.

The embodiment of the application further provides electronic equipment which can be mobile phones, tablets, computers, electronic watches and the like. Taking a mobile phone as an example, the electronic device includes: equipment main part and the module of making a video recording. The equipment main part is the casing or the apron of cell-phone, and the module setting of making a video recording is on the equipment main part. The specific structure of the camera module can refer to the above embodiments, and is not described herein again.

As shown in fig. 1, when the piezoelectric body 102 in the electronic device is powered on, the piezoelectric body 102 generates an oxidation reaction or a reduction reaction in the conductive medium 1011, a surface tension of the piezoelectric body 102 in the conductive medium 1011 changes during the reaction, the piezoelectric body 102 is driven by the tension change to deform, and since the piezoelectric body 102 is used for carrying the lens assembly, the piezoelectric body 102 can directly push the lens assembly to move during the state switching of the piezoelectric body 102.

As shown in fig. 2, when the piezoelectric body 102 in the electronic device is powered off, the surface tension of the piezoelectric body 102 in the conductive medium 1011 increases, the piezoelectric body 102 is driven to deform by the tension change, and since the piezoelectric body 102 is used for carrying the lens assembly, the piezoelectric body 102 abuts against the carrier, and the piezoelectric body 102 can directly push the lens assembly to reset.

In the description herein, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims

1. A piezoelectric motor, comprising:

2. The piezoelectric motor according to claim 1, wherein the piezoelectric body includes: the liquid metal layer is arranged in the accommodating groove; at least a portion of the liquid metal layer is disposed in the conductive medium, the liquid metal layer being electrically connected to the first electrical conductor;

one end of the liquid metal layer extends out of the opening and is used for bearing the carrier, and the liquid metal layer has a contraction state and an extension state; the liquid metal layer is switched between the extended state and the retracted state upon energization of the liquid metal layer.

3. The piezoelectric motor according to claim 2, wherein the liquid metal layer comprises: a gallium-based liquid metal.

4. The piezoelectric motor according to claim 2, further comprising:

and one end of the power supply component is electrically connected with the first conductor, and the other end of the power supply component is electrically connected with the second conductor.

5. The piezoelectric motor according to claim 4, wherein the power supply assembly comprises:

a power supply and a voltage adjustment mechanism; one end of the voltage regulating mechanism is electrically connected with the first conductor, and the other end of the voltage regulating mechanism is electrically connected with the second conductor through the power supply; alternatively, one end of the voltage adjustment mechanism is electrically connected to the second conductor, and the other end is electrically connected to the first conductor via the power supply.

6. The piezoelectric motor according to claim 1, further comprising:

the first suction piece is arranged at one end of the piezoelectric body, the first suction piece is electrically connected with the first conductor, and an insulating layer is arranged on the surface of the first suction piece, which is in contact with the conductive medium;

and the second adsorption piece is arranged at the other end of the piezoelectric body and is used for bearing the carrier.

7. The piezoelectric motor according to claim 6, further comprising:

the first connecting glue layer is connected between the first suction attachment and the bottom surface of the accommodating groove; one side, close to the first suction piece, of the first connection adhesive layer is provided with a mounting groove corresponding to the first conductor, the mounting groove and the first suction piece form a sealed cavity, and the first conductor is arranged in the sealed cavity;

and one end of the second connecting glue layer is connected to the second adsorption piece, and the other end of the second connecting glue layer is used for connecting the carrier.

8. The piezoelectric motor according to claim 7, further comprising:

the sealing member, sealing member sealing connection be in on the opening, be equipped with on the sealing member with the mounting hole of glue film adaptation is connected to the second, the glue film is connected to the second passes the mounting hole, the mounting hole is connected on the lateral wall of glue film is connected to the second.

9. The utility model provides a module of making a video recording which characterized in that includes:

a lens assembly;

the piezoelectric motor according to any one of claims 1-8; the piezoelectric body is connected with the lens component in an abutting mode and used for bearing the lens component.

10. An electronic device, comprising:

an apparatus main body;

a camera module disposed on the apparatus body, the camera module according to claim 9.