Piezoelectric driving structure, electronic equipment, camera device and family education machine

Abstract

The invention provides a piezoelectric driving structure, electronic equipment, a camera device and a family education machine, the electric driving structure comprises at least one flexible circuit board, and the outer side of the flexible circuit board is provided with a piezoelectric material electrically connected with the flexible circuit board; one end of the elastic electric connecting piece is electrically connected with the flexible circuit board, and the other end of the elastic electric connecting piece is connected with an external circuit; the rotating disc is in contact with the piezoelectric material, a driving shaft is arranged in the rotating disc, and when the external circuit is powered on, the piezoelectric material regularly vibrates and pushes the rotating disc to rotate, so that the driving shaft rotates. The scheme does not need a motor as a power source, is smaller in size and is suitable for driving miniaturized electronic equipment.

Description

Technical Field

[0001] The present invention relates to the field of driving technology, and in particular to a piezoelectric driving structure, electronic equipment, a camera device and a tutoring machine. Background Art

[0002] Conventional rotary drive devices often use motors to achieve rotation. The motors not only have complex structures, but also have large volumes. If applied to electronic devices with smaller volumes, the volume of the electronic devices will increase. Therefore, a drive structure suitable for miniaturized electronic devices is needed. Summary of the invention

[0003] The purpose of the present invention is to provide a piezoelectric drive structure, electronic equipment, camera device and tutoring machine to solve the problem that the existing drive device is not suitable for miniaturized electronic equipment.

[0004] The technical solution provided by the present invention is as follows:

[0005] The present invention provides a piezoelectric driving structure, comprising:

[0006] At least one flexible circuit board, wherein a piezoelectric material electrically connected to the flexible circuit board is disposed on the outer side of the flexible circuit board;

[0007] An elastic electrical connector, one end of which is electrically connected to the flexible circuit board, and the other end of which is connected to an external circuit;

[0008] A rotating disk is in contact with the piezoelectric material, and a driving shaft is arranged in the rotating disk.

[0009] When the external circuit is powered on, the piezoelectric material vibrates regularly and drives the turntable to rotate, thereby causing the drive shaft to rotate.

[0010] A flexible circuit board is provided, and the flexible circuit board is connected to an external circuit through an elastic electrical connector. A piezoelectric material is provided on the outside of the flexible circuit board, and the piezoelectric material is connected to a turntable. When the external circuit is powered on, the piezoelectric material can vibrate regularly, thereby driving the turntable and a driving shaft connected to the turntable to rotate, thereby achieving the driving purpose.

[0011] This solution does not require a motor as a power source, making the drive structure smaller and suitable for driving small electronic devices. Flexible circuit boards and elastic electrical connectors can reduce the rigid connection and rigid contact of the drive structure, avoiding loosening of welding positions after long-term use of the equipment, especially in scenarios where the drive structure will continue to vibrate, which is beneficial to increasing the service life of the equipment. At the same time, it can also reduce the reaction force generated by rigid connections and rigid contacts during vibration, thereby improving the conversion efficiency of the drive structure from electrical energy to mechanical energy.

[0012] In some embodiments, the elastic electrical connector is a leaf spring, which is formed by etching a leaf spring and has a regular or irregular corrugated shape as a whole.

[0013] By using a leaf spring as an elastic electrical connector, the elasticity of the elastic electrical connector can be improved without affecting the conduction of the circuit, thereby avoiding being affected when the piezoelectric material vibrates.

[0014] In some embodiments, the thickness of the reed is between 0.03-0.05 μm.

[0015] In some embodiments, one end of the leaf spring is pressed and connected to the flexible circuit board through out-of-phase conductive particles, or one end of the leaf spring is welded and connected to the flexible circuit board through conductive glue or solder paste.

[0016] The other end of the leaf spring is provided with an interface which is in conduction with the external circuit.

[0017] In some embodiments, there are multiple flexible circuit boards, and the multiple flexible circuit boards are arranged horizontally.

[0018] The piezoelectric material and the flexible circuit board are arranged alternately, and electrodes connected to the piezoelectric material are arranged on both sides of the flexible circuit board;

[0019] The elastic electrical connectors are equal in number to the flexible circuit boards and are respectively connected to the corresponding flexible circuit boards.

[0020] In some embodiments, a friction member is provided between the turntable and the piezoelectric material on one side close to the turntable, and when the piezoelectric material vibrates regularly, the turntable is pushed to rotate by the friction member.

[0021] By providing the friction piece, the effect of the piezoelectric material in driving the turntable to rotate can be improved, and the piezoelectric material can be prevented from being worn out after long-term use.

[0022] In some embodiments, the invention further comprises a housing, wherein the turntable is movably mounted on one side of the housing through a bearing, and a flexible bracket is disposed on the other side of the housing, wherein the flexible circuit board and the piezoelectric material are mounted on the flexible bracket.

[0023] In addition, the present invention also provides an electronic device, comprising the above-mentioned piezoelectric driving structure, and also comprising a load connected to the driving axis of the piezoelectric driving structure.

[0024] By using the above-mentioned piezoelectric driving structure as a driving source, the electronic device can have a smaller size and a wider range of application scenarios.

[0025] In addition, the present invention further provides a camera device, comprising the above-mentioned piezoelectric drive structure, and further comprising:

[0026] A mounting bracket, the driving shaft of the piezoelectric driving structure is connected to the mounting bracket;

[0027] A high-pixel camera is mounted on the mounting bracket so that the high-pixel camera can rotate to both sides driven by the piezoelectric drive structure.

[0028] By applying the above-mentioned piezoelectric driving structure to the camera device, the high-pixel camera of the camera device can rotate to both sides driven by the piezoelectric driving structure, thereby realizing large-format shooting of the camera, avoiding the influence of the camera FOV, and making the captured image clearer and with a higher pixel density.

[0029] In some embodiments, it further comprises:

[0030] A driving chip, wherein the driving chip is used to control the rotation angle and rotation direction of the high-pixel camera through the driving axis of the piezoelectric driving structure.

[0031] By providing a driving chip, the intelligence of the camera device can be improved, so that the rotation angle and rotation direction of the high-pixel camera can be adjusted according to actual shooting requirements.

[0032] In some embodiments, it further comprises:

[0033] The piezoelectric drive structure is installed in the shell, and the mounting bracket is movably installed above the piezoelectric drive structure.

[0034] A low-pixel wide-angle camera is also arranged in the housing on the other side relative to the mounting bracket.

[0035] In addition, the present invention also provides a tutoring machine, comprising the above-mentioned camera device.

[0036] By applying the above-mentioned camera device to the tutoring machine, the tutoring machine can realize large-format shooting of text in the point-to-read area, avoiding the influence of the camera FOV, making the captured image clearer and with a higher pixel density, reducing the camera distortion problem, and facilitating the correct recognition of text.

[0037] The piezoelectric drive structure, electronic equipment, camera device and tutoring machine provided by the present invention have at least the following beneficial effects:

[0038] (1) The piezoelectric drive structure of this solution does not need a motor as a power source, which makes the drive structure smaller and suitable for driving small electronic devices;

[0039] (2) The piezoelectric drive structure of this solution can reduce the rigid connection and rigid contact of the drive structure by setting a flexible circuit board and an elastic electrical connector, thereby preventing the welding position from loosening after long-term use of the device, especially in the scenario where the drive structure will continuously vibrate, which is beneficial to improving the service life of the device;

[0040] (3) The piezoelectric drive structure of the scheme can also reduce the reaction force generated by rigid connection and rigid contact during vibration by providing a flexible circuit board and an elastic electrical connector, thereby improving the conversion efficiency of the drive structure from electrical energy to mechanical energy;

[0041] (4) By using the above-mentioned piezoelectric driving structure as a driving source, the electronic device can have a smaller volume and a wider range of application scenarios;

[0042] (5) By applying the above-mentioned piezoelectric driving structure to a camera device, the high-pixel camera of the camera device can be driven by the piezoelectric driving structure to rotate to both sides, thereby realizing large-format shooting of the camera, avoiding the influence of the camera FOV, and making the captured image clearer and with a higher pixel density;

[0043] (6) By applying the above-mentioned camera device to the tutoring machine, the tutoring machine can realize large-scale shooting of the text in the point-to-read area, avoiding the influence of the camera FOV, making the captured image clearer and with a higher pixel density, reducing the camera distortion problem, and facilitating the correct recognition of the text. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The preferred implementation scheme will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present solution.

[0045] Figure 1 is a schematic diagram of the overall structure of the piezoelectric drive structure of an embodiment of the present invention;

[0046] Figure 2 is a schematic diagram of the structure of a piezoelectric drive structure of an embodiment of the present invention;

[0047] Figure 3 is a schematic diagram of the structure of a piezoelectric drive structure portion of another embodiment of the present invention;

[0048] Figure 4 is a schematic diagram of the structure of a piezoelectric drive structure of another embodiment of the present invention;

[0049] Figure 5 is a schematic structural diagram of a camera device according to an embodiment of the present invention;

[0050] Figure 6 2 is an overall schematic diagram of a camera device according to an embodiment of the present invention.

[0051] Numbers in the figure: 100-piezoelectric drive structure; 1-flexible circuit board; 2-piezoelectric material; 3-elastic electrical connector; 4-turntable; 5-drive shaft; 6-electrode; 7-friction member; 8-mounting bracket; 9-high-pixel camera; 10-drive chip; 11-housing; 12-low-pixel wide-angle camera; 13-housing; 14-flexible bracket; 15-interface. DETAILED DESCRIPTION

[0052] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0053] In order to simplify the drawings, only the parts related to the present invention are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically drawn or marked. In this article, "one" not only means "only one", but also means "more than one".

[0054] Traditional rotary drive devices often use motor drive to achieve rotation. However, the motor not only has the problem of complex structure, but also has the problem of large size. If it is applied to a small electronic device, it will increase the size of the electronic device. Therefore, the present application provides a piezoelectric drive structure that does not use a motor as a power source, thereby reducing the size of the drive structure. Specifically:

[0055] In one embodiment, the reference specification Figures 1 to 4 The present invention provides a piezoelectric driving structure 100, comprising: at least one flexible circuit board 1, an elastic electrical connector 3, and a turntable 4.

[0056] The flexible circuit board 1 (FPC) is a highly reliable and extremely flexible printed circuit board made of polyimide or polyester film as a substrate, and has the characteristics of high wiring density, light weight, thin thickness, and good bendability. The reason why the flexible circuit board 1 is selected in this application instead of the conventional rigid circuit board is that when the application is driven, regular vibration will be generated, and the conventional rigid circuit board is easily damaged during vibration, or the wiring is broken, or poor contact is caused, or the vibration effect is affected; while the flexible circuit board 1 has good bendability and will not produce these negative effects.

[0057] A piezoelectric material 2 electrically connected to the flexible circuit board 1 is disposed on the outer side of the flexible circuit board 1 . The piezoelectric material 2 is a crystalline material that generates a voltage between the two end surfaces when subjected to pressure.

[0058] The mechanism of the piezoelectric effect is that the symmetry of the crystal with piezoelectricity is low. When it is deformed by external force, the relative displacement of the positive and negative ions in the unit cell makes the positive and negative charge centers no longer coincide, resulting in macroscopic polarization of the crystal. The surface charge density of the crystal is equal to the projection of the polarization intensity on the surface normal, so when the piezoelectric material 2 is deformed by pressure, opposite charges will appear on the two end faces. Conversely, when the piezoelectric material 2 is polarized in an electric field, the displacement of the charge center will cause the material to deform. The present application utilizes the piezoelectric effect of the piezoelectric material 2 so that the piezoelectric material 2 can be deformed when power is applied. By controlling the current, the piezoelectric material 2 is deformed regularly, and can be used as a power source for the rotation of the drive shaft 5.

[0059] One end of the elastic electrical connector 3 is electrically connected to the flexible circuit board 1, and the other end is connected to the external circuit; the turntable 4 is in contact with the piezoelectric material 2, and a driving shaft 5 is arranged inside the turntable 4. When the external circuit is powered on, the piezoelectric material 2 vibrates regularly and drives the turntable 4 to rotate, thereby rotating the driving shaft 5.

[0060] A flexible circuit board 1 is provided, and the flexible circuit board 1 is connected to an external circuit via an elastic electrical connector 3. A piezoelectric material 2 is provided on the outside of the flexible circuit board 1, and the piezoelectric material 2 is connected to a turntable 4. When the external circuit is powered on, the piezoelectric material 2 can vibrate regularly, thereby driving the turntable 4 and a driving shaft 5 connected to the turntable 4 to rotate, thereby achieving the driving purpose.

[0061] This solution does not require a motor as a power source, making the drive structure smaller in size and suitable for driving small electronic devices.

[0062] In addition, in the prior art, there are also driving structures that use piezoelectric materials 2 for piezoelectric driving. However, the piezoelectric electrode 6 of the traditional piezoelectric driving device is usually connected to the external circuit by welding technology. The piezoelectric material 2 will generate ultrasonic vibration during use. The welding technology is too rigid, and long-term use will cause the welding position to loosen; secondly, the piezoelectric device converts electrical energy into mechanical energy during use, and the rigid contact of the traditional electrical conduction method increases the reaction force and affects the conversion efficiency.

[0063] The present application adopts a flexible circuit board 1 and an elastic electrical connector 3, which can reduce the rigid connection and rigid contact of the driving structure, and avoid the loosening of the welding position after long-term use of the equipment, especially in the scenario where the driving structure will continue to vibrate, which is beneficial to improve the service life of the equipment; at the same time, the use of a flexible circuit board 1 and an elastic electrical connector 3 can also reduce the reaction force generated by the rigid connection and rigid contact during vibration, and improve the conversion efficiency of the driving structure from electrical energy to mechanical energy.

[0064] In one embodiment, the reference specification Figures 1 to 4 On the basis of the above-mentioned embodiment, the present application sets the elastic electrical connector 3 as a leaf spring, which is formed by etching a leaf spring and has a regular or irregular corrugated shape as a whole. The purpose of setting the leaf spring as a regular or irregular corrugated shape is to improve the elasticity of the elastic electrical connector 3. There is no restriction on its specific shape, such as wave shape, spiral shape, U-shaped shape, etc. There is no restriction on the molding method, as long as the two characteristics of elasticity and conductivity are met.

[0065] By using a leaf spring as the elastic electrical connector 3, the elasticity of the elastic electrical connector 3 can be improved without affecting the conduction of the circuit, so as to avoid being affected when the piezoelectric material 2 vibrates. In other embodiments, other elastic electrical connectors can be used as the intermediate structure connecting the external circuit and the flexible circuit board 1, which is not limited here.

[0066] Preferably, the thickness of the reed is between 0.03-0.05 μm. Under this thickness, the reed is easy to etch and shape, and the elasticity of the elastic electrical connector 3 can be ensured. In other embodiments, the thickness can be adjusted according to actual needs.

[0067] Further preferably, one end of the reed spring is pressed and connected to the flexible circuit board 1 through out-of-phase conductive particles, or one end of the reed spring is welded and connected to the flexible circuit board 1 through conductive glue or solder paste, and the other end of the reed spring is provided with an interface 15 connected to an external circuit.

[0068] Specifically, when making an electrical connection, the reed spring and the flexible circuit board 1 can be connected and conducted using out-of-phase conductive particles, or can be connected and conducted by welding using conductive glue or solder paste, without limitation here; an interface 15 can be set at the other end of the reed spring to facilitate connection with an external circuit.

[0069] In one embodiment, the reference specification Figures 1 to 4The number of flexible circuit boards 1 is multiple, and the multiple flexible circuit boards 1 are arranged horizontally. For example, the present application uses three flexible circuit boards 1, and the three flexible circuit boards 1 are arranged in a line. The piezoelectric material 2 and the flexible circuit boards 1 are arranged alternately, and electrodes 6 connected to the piezoelectric material 2 are provided on both sides of the flexible circuit board 1; so that after the flexible circuit board 1 is conductive, the piezoelectric material 2 can be conductively deformed through the electrode 6.

[0070] The number of elastic electrical connectors 3 is equal to that of flexible circuit boards 1 , and they are connected to corresponding flexible circuit boards 1 respectively, and each elastic electrical connector 3 is separated in sequence to avoid mutual influence during deformation.

[0071] Preferably, a friction member 7 is provided between the turntable 4 and the piezoelectric material 2 on one side close to the turntable 4 , and the friction member 7 pushes the turntable 4 to rotate when the piezoelectric material 2 vibrates regularly.

[0072] By providing the friction member 7 , the effect of the piezoelectric material 2 driving the turntable 4 to rotate can be improved, and the piezoelectric material 2 can be prevented from being worn out after long-term use, which is beneficial to increasing the service life of the piezoelectric driving structure 100 .

[0073] In one embodiment, the reference specification Figures 1 to 4 The piezoelectric drive structure 100 provided in the present application also includes a shell 13, and the turntable 4 is movably installed on one side of the shell 13 through a bearing, so that the turntable 4 can rotate automatically; a flexible bracket 14 is arranged on the other side of the shell 13, and the flexible circuit board 1 and the piezoelectric material 2 are installed on the flexible bracket 14. The setting of the flexible bracket 14 can provide support for the flexible circuit board 1 and the piezoelectric material 2, and can vibrate with the vibration of the piezoelectric material 2 to avoid affecting the driving effect; the flexible bracket can be made of rubber, silicone, polyethylene and other materials.

[0074] The principle of the piezoelectric driving structure 100 is: by energizing the three interfaces of the leaf spring, the piezoelectric material 2 can generate regular ultrasonic vibrations and drive the turntable 4 to rotate. The turntable 4 can drive the driving shaft 5 to move together. The driving shaft 5 can drive the required load to move to achieve the driving purpose; at the same time, the rotation direction of the driving shaft 5 can be achieved by switching the leaf spring left and right to achieve positive and negative rotation.

[0075] In one embodiment, the present invention further provides an electronic device, comprising the piezoelectric driving structure 100 of the above embodiment, and also comprising a load connected to the driving axis 5 of the piezoelectric driving structure 100 .

[0076] By using the above-mentioned piezoelectric driving structure 100 as an electronic device for driving source, the electronic device can have a smaller volume, so that the application scenarios of the electronic device are more extensive; and the driving control accuracy can be higher.

[0077] In one embodiment, the reference specification Figure 5 The present invention further provides a camera device, including the piezoelectric driving structure 100 of the above embodiment, and also including: a mounting bracket 8 and a high-pixel camera 9.

[0078] The driving shaft 5 of the piezoelectric driving structure 100 is connected to the mounting bracket 8 ; the high-pixel camera 9 is mounted on the mounting bracket 8 , so that the high-pixel camera 9 can rotate to both sides driven by the piezoelectric driving structure 100 .

[0079] The pixel density of an image is related to the pixel density of the camera, the lens FOV (field of view), and the shooting distance. Under the condition that the camera pixel and camera height are fixed, the smaller the lens FOV, the higher the pixel density of the collected image data. The closer the camera shooting area is aligned with the center area of ​​the camera chip, the better the collected image data. Therefore, in order to improve the effect of shooting images, it is necessary to eliminate the influence of the camera FOV on shooting.

[0080] The present application applies the above-mentioned piezoelectric driving structure 100 to the camera device, so that the high-pixel camera 9 of the camera device can rotate to both sides driven by the piezoelectric driving structure 100, thereby realizing large-format shooting of the camera, avoiding the influence of the camera FOV, and making the captured image clearer and with a higher pixel density.

[0081] In one embodiment, the reference specification Figure 5 On the basis of the aforementioned embodiments, the camera device provided by the present application further includes: a driving chip 10 , which is used to control the rotation angle and rotation direction of the high-pixel camera 9 through the driving axis 5 of the piezoelectric driving structure 100 .

[0082] By setting the driving chip 10, the intelligence of the camera device can be improved, so that the rotation angle and rotation direction of the high-pixel camera 9 can be adjusted according to the actual shooting requirements. Its control principle adopts the existing control method, that is, it can identify the area center according to the area of ​​the shooting picture, and calculate the rotation angle and rotation direction of the high-pixel camera 9, and then calculate the control current according to the various parameters of the piezoelectric driving structure 100, output the control current, and realize the high-pixel camera 9 to rotate according to the required rotation angle and rotation direction.

[0083] In one embodiment, the reference specification Figure 5 and Figure 6 On the basis of the aforementioned embodiments, the camera device provided by the present application further includes: a housing 11, a piezoelectric driving structure 100 installed in the housing 11, and a mounting bracket 8 movably installed above the piezoelectric driving structure 100, so that the driving axis 5 of the piezoelectric driving structure 100 is perpendicular to the mounting bracket 8, so that when the piezoelectric driving structure 100 is driven, the mounting bracket 8 can drive the high-pixel camera 9 to rotate.

[0084] A low-pixel wide-angle camera 12 is also disposed on the other side of the housing 11 relative to the mounting bracket 8 .

[0085] By providing a low-pixel wide-angle camera 12 in the camera device, it is possible to assist the camera device in shooting, improve the shooting effect, and expand the application scenarios of the camera device.

[0086] In one embodiment, based on the above-mentioned embodiment, the present invention further provides a tutoring machine, comprising the above-mentioned camera device.

[0087] Tutoring machines have become an important learning device for students taking online classes or studying at home. Tutoring machines use cameras to read the text in the area where the user is located, or place the book content in the shooting range of the tutoring machine camera for text recognition. In the industry, the front camera of the tutoring machine reflects the learning content to the camera for text collection and recognition; or the learning content can be collected and recognized through the lifting and flipping camera function.

[0088] Currently, the smart eye system of tutoring machines in the industry is unable to collect and recognize text in a large format due to the limitation of camera FOV; even if a wide-angle smart eye camera is used, due to the distortion problem of the wide-angle camera, the collected data needs to be cropped and corrected before it can be used, and cropping and correction of distortion will lead to insufficient clarity and pixel density of the overall data; at the same time, due to the large format and insufficient pixel density of the smart eye, the text will be unclear and unable to be recognized.

[0089] This application applies the above-mentioned camera device to the tutoring machine, so that the tutoring machine can shoot large-format text in the point-reading area, avoid being affected by the camera FOV, make the captured image clearer, and increase the pixel density, reduce the camera distortion problem, and facilitate the correct recognition of text. On the basis of large format, a high pixel density and high-definition smart eye solution is realized at the same time, so that users can recognize text in any smart eye recognition area.

[0090] The piezoelectric drive structure, electronic device, camera device and tutoring machine provided by the present invention have at least the following beneficial effects:

[0091] (1) The piezoelectric drive structure of this solution does not need a motor as a power source, which makes the drive structure smaller and suitable for driving small electronic devices;

[0092] (2) The piezoelectric drive structure of this solution can reduce the rigid connection and rigid contact of the drive structure by setting a flexible circuit board and an elastic electrical connector, thereby preventing the welding position from loosening after long-term use of the device, especially in the scenario where the drive structure will continuously vibrate, which is beneficial to improving the service life of the device;

[0093] (3) The piezoelectric drive structure of the scheme can also reduce the reaction force generated by rigid connection and rigid contact during vibration by providing a flexible circuit board and an elastic electrical connector, thereby improving the conversion efficiency of the drive structure from electrical energy to mechanical energy;

[0094] (4) By using the above-mentioned piezoelectric driving structure as a driving source, the electronic device can have a smaller volume and a wider range of application scenarios;

[0095] (5) By applying the above-mentioned piezoelectric driving structure to a camera device, the high-pixel camera of the camera device can be driven by the piezoelectric driving structure to rotate to both sides, thereby realizing large-format shooting of the camera, avoiding the influence of the camera FOV, and making the captured image clearer and with a higher pixel density;

[0096] (6) By applying the above-mentioned camera device to the tutoring machine, the tutoring machine can realize large-scale shooting of the text in the point-to-read area, avoiding the influence of the camera FOV, making the captured image clearer and with a higher pixel density, reducing the camera distortion problem, and facilitating the correct recognition of the text.

[0097] It should be noted that the above embodiments can be freely combined as needed. The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered as the protection scope of the present invention.

Claims

1. A piezoelectric drive structure, characterized in that: include: At least one flexible circuit board, wherein a piezoelectric material electrically connected to the flexible circuit board is disposed on the outer side of the flexible circuit board; An elastic electrical connector, one end of which is electrically connected to the flexible circuit board, and the other end of which is connected to an external circuit; A rotating disk is in contact with the piezoelectric material, and a driving shaft is arranged in the rotating disk. When the external circuit is powered on, the piezoelectric material vibrates regularly and drives the turntable to rotate, thereby causing the drive shaft to rotate.

2. The piezoelectric drive structure according to claim 1, characterized in that: The elastic electrical connector is a leaf spring, which is formed by etching a leaf spring and has a regular or irregular corrugated shape as a whole.

3. The piezoelectric drive structure according to claim 2, characterized in that: The thickness of the reed is between 0.03-0.05 μm.

4. The piezoelectric drive structure according to claim 2, characterized in that: One end of the leaf spring is pressed and connected to the flexible circuit board through out-of-phase conductive particles, or one end of the leaf spring is welded and connected to the flexible circuit board through conductive glue or solder paste. The other end of the leaf spring is provided with an interface which is in conduction with the external circuit.

5. The piezoelectric drive structure according to any one of claims 1 to 4, characterized in that: There are multiple flexible circuit boards, and the multiple flexible circuit boards are arranged horizontally. The piezoelectric material and the flexible circuit board are arranged alternately, and electrodes connected to the piezoelectric material are arranged on both sides of the flexible circuit board; The elastic electrical connectors are equal in number to the flexible circuit boards and are respectively connected to the corresponding flexible circuit boards.

6. The piezoelectric drive structure according to claim 5, characterized in that: A friction piece is arranged between the rotating disk and the piezoelectric material on one side close to the rotating disk. When the piezoelectric material vibrates regularly, the rotating disk is pushed to rotate by the friction piece.

7. The piezoelectric drive structure according to claim 5, characterized in that: It also includes a shell, the turntable is movably mounted on one side of the shell through a bearing, a flexible bracket is arranged on the other side of the shell, and the flexible circuit board and the piezoelectric material are mounted on the flexible bracket.

8. An electronic device, characterized in that: The piezoelectric drive structure comprises the piezoelectric drive structure according to any one of claims 1 to 7, and further comprises a load connected to a drive shaft of the piezoelectric drive structure.

9. A camera device, characterized in that: The piezoelectric drive structure according to any one of claims 1 to 7 further comprises: A mounting bracket, the driving shaft of the piezoelectric driving structure is connected to the mounting bracket; A high-pixel camera is mounted on the mounting bracket so that the high-pixel camera can rotate to both sides driven by the piezoelectric drive structure.

10. The imaging device according to claim 9, characterized in that: Also includes: A driving chip, wherein the driving chip is used to control the rotation angle and rotation direction of the high-pixel camera through the driving axis of the piezoelectric driving structure.

11. The imaging device according to claim 9, wherein: Also includes: The piezoelectric drive structure is installed in the shell, and the mounting bracket is movably installed above the piezoelectric drive structure. A low-pixel wide-angle camera is also arranged in the housing on the other side relative to the mounting bracket.

12. A tutoring machine, characterized in that: The camera device comprises any one of claims 9 to 11.

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