Piezoelectric ceramic driving motor and electronic equipment

Abstract

The utility model is suitable for the technical field of electronic equipment, and provides a piezoelectric ceramic driving motor and electronic equipment, and the piezoelectric ceramic driving motor comprises a housing which is provided with an accommodation cavity; the mass block is accommodated in the accommodating cavity and is movably connected to the shell; the elastic sheet is provided with a first free end and a second free end, the first free end is connected to the shell, and the second free end is connected to the mass block; the piezoelectric ceramic piece is arranged on the elastic piece, and when the piezoelectric ceramic piece is electrified and deformed, the second free end can be close to or away from the first free end; the electric control part is electrically connected with the piezoelectric ceramic part, and the electric control part is used for supplying power to the piezoelectric ceramic part. According to the invention, when the piezoelectric ceramic piece is electrified, the piezoelectric ceramic piece deforms and drives the second free end to be close to or far away from the first free end, the mass block can be driven to move relative to the shell at a certain acceleration, and vibration is output outwards.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of electronic equipment, and more particularly relates to a piezoelectric ceramic driving motor and electronic equipment. BACKGROUND

[0002] The motor is an electronic element used for providing vibration touch feedback to users in products such as mobile phones and computers, for example, incoming call vibration reminders, message vibration prompts, game hitting simulation, etc.

[0003] In the related art, the motor usually adopts a voice coil type motor structure, which utilizes a magnetic field generated after the coil is electrified to make the magnet move under force in the electrified coil, thereby outputting vibration to the outside. The motion structure of the voice coil type motor is relatively complex, and it occupies a relatively large volume, and in order to ensure that the voice coil type motor can stably run, the product needs to have a relatively large thickness size. CONTENT OF THE UTILITY MODEL

[0004] The purpose of the embodiment of the present application is to provide a piezoelectric ceramic driving motor and electronic equipment to solve the technical problem that the motion structure of the voice coil type motor is relatively complex, it occupies a relatively large volume, and in order to ensure that the voice coil type motor can stably run, the product needs to have a relatively large thickness size in the prior art.

[0005] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is to provide a piezoelectric ceramic driving motor, comprising:

[0006] A housing, the housing has a containing cavity;

[0007] A mass block, the mass block is accommodated in the containing cavity and movably connected to the housing;

[0008] An elastic sheet, the elastic sheet has a first free end and a second free end, the first free end is connected to the housing, and the second free end is connected to the mass block;

[0009] A piezoelectric ceramic piece, the piezoelectric ceramic piece is arranged on the elastic sheet, and when the piezoelectric ceramic piece is electrified and deformed, the second free end can be close to or away from the first free end;

[0010] An electric control, the electric control is electrically connected with the piezoelectric ceramic piece, and the electric control is used for supplying power to the piezoelectric ceramic piece.

[0011] The piezoelectric ceramic driving motor provided by the embodiments of the present application has the piezoelectric ceramic piece arranged on the elastic sheet, the first free end of the elastic sheet connected to the shell, and the second free end connected to the mass. When power is supplied to the piezoelectric ceramic piece, the piezoelectric ceramic piece deforms and drives the second free end to move close to or away from the first free end, so as to drive the mass to move relative to the shell at a certain acceleration, and realize the output of vibration.

[0012] In some embodiments, the elastic sheet comprises a first elastic part and a second elastic part connected to the first elastic part at one end, the end of the first elastic part away from the second elastic part being the first free end, and the end of the second elastic part away from the first elastic part being the second free end, and the piezoelectric ceramic piece is arranged on the first elastic part and / or the second elastic part.

[0013] In the embodiments, the piezoelectric ceramic piece is arranged on the first elastic part and / or the second elastic part. After power is supplied to the piezoelectric ceramic piece, the piezoelectric ceramic piece deforms and drives the first elastic part and / or the second elastic part to deform correspondingly, so as to drive the second free end on the second elastic part to move close to or away from the first free end on the first elastic part, and drive the mass to move relative to the shell at a certain acceleration, and realize the output of vibration.

[0014] In some embodiments, the elastic sheet comprises a closed end, and the first free end and the second free end are located on the same side of the closed end.

[0015] In the embodiments, the first free end and the second free end are located on the same side of the closed end, which can simplify the structure of the elastic sheet. Such a layout can also reduce unnecessary swinging and twisting caused by vibration, so as to make the output of vibration more stable and reliable, and increase the stability of the entire elastic sheet system. In addition, by placing the first free end and the second free end on the same side of the closed end, when the driving force acts on the elastic sheet, the vibration can be more directly transmitted from the closed end to the second free end, so as to realize more effective vibration transmission and provide more efficient vibration output.

[0016] In some embodiments, the number of elastic sheets is two, the two elastic sheets are respectively connected to opposite sides of the mass, and the opening formed by the first elastic part and the second elastic part of one elastic sheet has the same orientation as the opening formed by the first elastic part and the second elastic part of the other elastic sheet.

[0017] In the embodiment, two elastic sheets are used, and the elastic sheets are arranged on opposite sides of the mass block, balanced support can be provided on opposite sides of the mass block, the two elastic sheets simultaneously provide driving force for the mass block, which helps to ensure the stability of the driving force, makes the vibration output more stable, reduces unnecessary swing and distortion; the openings of the two elastic sheets face the same direction, which can make the stress point of the mass block located at the same end of the mass block, avoid the mass block from being twisted by torque, and help to improve the stability of the mass block movement.

[0018] In some embodiments, the number of elastic sheets is two, the two elastic sheets are respectively connected to opposite sides of the mass block, and the opening formed by the first elastic part and the second elastic part of one elastic sheet faces in the opposite direction of the opening formed by the first elastic part and the second elastic part of the other elastic sheet.

[0019] In the embodiment, two elastic sheets are used, and the elastic sheets are arranged on opposite sides of the mass block, balanced support can be provided on opposite sides of the mass block, the two elastic sheets simultaneously provide driving force for the mass block, which helps to ensure the stability of the driving force, makes the vibration output more stable, reduces unnecessary swing and distortion; the openings of the two elastic sheets face the same direction, which can make the stress point of the mass block located at the same end of the mass block, avoid the mass block from being twisted by torque, and help to improve the stability of the mass block movement.

[0020] In some embodiments, the elastic sheet includes a first elastic part, a second elastic part, and an elastic connecting part connecting the first elastic part and the second elastic part, and the piezoelectric ceramic piece is arranged on at least one of the first elastic part, the second elastic part, and the elastic connecting part.

[0021] In the embodiment, the piezoelectric ceramic piece is arranged on at least one of the first elastic part, the second elastic part, and the elastic connecting part, and when the piezoelectric ceramic piece is driven by a driving signal, it deforms, thereby driving the elastic sheet to deform and driving the mass block to move relative to the shell, realizing external vibration output.

[0022] In some embodiments, one end of the elastic connecting part is connected to an end of the first elastic part away from the first free end, and the other end of the elastic connecting part is connected to an end of the second elastic part away from the second free end.

[0023] By adopting the above technical solution, the elastic connecting part is respectively connected to the end of the first elastic part and the end of the second elastic part, which can realize stable deformation of the elastic sheet, help to improve the stability of the mass block movement, realize stable output of vibration, and can fully utilize the deformation of the first elastic part and the second elastic part to drive the mass block to move, help to improve the use efficiency of mechanical energy generated by deformation.

[0024] In some embodiments, the number of electrical controls is two, and the two electrical controls are used to supply power to the piezoelectric ceramics on the two elastic sheets respectively.

[0025] By adopting the technical solutions described above, independent control of the piezoelectric ceramics on each elastic sheet can be achieved, different frequencies, amplitudes and phases of vibrations can be generated on the two elastic sheets based on actual use requirements, which helps to achieve more flexible and diversified vibration modes and provide richer vibration haptic feedback effects.

[0026] In some embodiments, the number of electrical controls is one, and the electrical control includes a first electrical control sub-component and a second electrical control sub-component, the piezoelectric ceramics include a first piezoelectric ceramic sub-component and a second piezoelectric ceramic sub-component, the first piezoelectric ceramic sub-component is arranged on the first elastic part, the second piezoelectric ceramic sub-component is arranged on the second elastic part, the first electrical control sub-component is electrically connected to the first piezoelectric ceramic sub-component, and the second electrical control sub-component is electrically connected to the first piezoelectric ceramic sub-component and the second piezoelectric ceramic sub-component, and the second electrical control sub-component is used to realize electrical connection between the first piezoelectric ceramic sub-component and the second piezoelectric ceramic sub-component.

[0027] In this embodiment, one electrical control can be used to control the power supply of the first piezoelectric ceramic sub-component and the second piezoelectric ceramic sub-component at the same time, which helps to reduce energy loss and system complexity, simplify the structure of the motor, and reduce costs; the first electrical control sub-component is directly electrically connected to the first piezoelectric ceramic sub-component, while the second electrical control sub-component is electrically connected to the first piezoelectric ceramic sub-component and the second piezoelectric ceramic sub-component, which can realize the transmission of electrical energy from the first piezoelectric ceramic sub-component to the second piezoelectric ceramic sub-component, realize the synchronous deformation of the first elastic part and the second elastic part, improve the stability of the deformation of the elastic sheet, stably move the mass relative to the shell, and realize stable output of vibration.

[0028] In some embodiments, the number of elastic sheets is one, and the piezoelectric ceramic driven motor further includes an extension member, and the elastic sheet and the extension member are respectively connected to opposite sides of the mass.

[0029] By adopting the technical solutions described above, the elastic sheet and the extension member are respectively connected to opposite sides of the mass, the elastic sheet can drive the mass to move relative to the shell to realize external output of vibration, and the extension member can provide balanced support for the mass to ensure the stability of the movement of the mass, which helps to improve the stability and reliability of the vibration output of the motor.

[0030] The application also provides an electronic device including a screen and the piezoelectric ceramic driven motor described above, and the screen is attached to the piezoelectric ceramic driven motor.

[0031] The electronic device provided by the embodiment of the present application can provide tactile feedback by using the vibration of the piezoelectric ceramic driving motor through the connection of the screen and the piezoelectric ceramic driving motor, and the driving motor can generate tactile feedback in a specific vibration mode and intensity when the user touches or operates the screen, which helps to enhance the interactive experience.

[0032] The above description is only a summary of the technical solutions of the present application, in order to more clearly understand the technical means of the present application, and can be implemented according to the content of the specification, and in order to make the above and other purposes, characteristics and advantages of the present application more obvious and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or related technical description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0034] Figure 1 is a schematic diagram of a piezoelectric ceramic driving motor provided by an embodiment of the present application;

[0035] Figure 2 is a schematic diagram of the connection of a piezoelectric ceramic piece and an elastic sheet provided by an embodiment of the present application;

[0036] Figure 3 is a schematic diagram of the deformation of the elastic sheet driven by the piezoelectric ceramic piece provided by an embodiment of the present application;

[0037] Figure 4 is a schematic diagram of the deformation of the elastic sheet driven by the piezoelectric ceramic piece provided by another embodiment of the present application;

[0038] Figure 5 is a schematic diagram of the elastic sheet provided by an embodiment of the present application, in which the openings of the elastic sheet are arranged in the same direction;

[0039] Figure 6 is a schematic diagram of the elastic sheet provided by an embodiment of the present application, in which the openings of the elastic sheet are arranged in opposite directions;

[0040] Figure 7 is a schematic diagram of the movement of the mass provided by an embodiment of the present application;

[0041] Figure 8 is a schematic diagram of the movement of the mass provided by another embodiment of the present application;

[0042] Figure 9 is a schematic diagram of the multiple bending of the elastic connection part provided by an embodiment of the present application.

[0043] Wherein, the reference signs in the figures:

[0044] 100 piezoceramic drive motor; 10 housing; 20 mass; 30 elastic sheet; 31 first free end; 32 second free end; 33 first elastic part; 34 second elastic part; 35 closed end; 36 elastic connecting part; 40 piezoceramic piece; 41 first piezoceramic sub-piece; 42 second piezoceramic sub-piece; 50 electric control; 51 first electric control sub-piece; 52 second electric control sub-piece. DETAILED DESCRIPTION

[0045] The embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0046] In the description of the present application, it is understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0047] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0048] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0049] Please refer to Figure 1The embodiment of the present application provides a piezoelectric ceramic driving motor 100, which comprises a shell 10, a mass block 20, an elastic sheet 30, a piezoelectric ceramic piece 40 and an electric control 50.

[0050] The shell 10 has a containing cavity.

[0051] The shell 10 can be a box body, a box body or the like structure with a cavity.

[0052] The mass block 20 is accommodated in the containing cavity and movably connected to the shell 10.

[0053] The mass block 20 is a metal block or a block of other materials with a certain mass and inertia. The mass block 20 is accommodated in the containing cavity, and the opposite two end faces of the mass block 20 are attached to the cavity wall of the containing cavity and can move along the cavity wall of the containing cavity relative to the shell 10.

[0054] Optionally, a moving guide rail can be arranged on the cavity wall of the shell 10, and the mass block 20 is attached to the moving guide rail and can move along the moving guide rail relative to the shell 10.

[0055] The elastic sheet 30 has a first free end 31 and a second free end 32, the first free end 31 is connected to the shell 10, and the second free end 32 is connected to the mass block 20.

[0056] The elastic sheet 30 is a sheet structure with a certain elasticity. The elastic sheet 30 can be a metal sheet or a sheet of other materials.

[0057] One end of the elastic sheet 30 is in an open shape, and the two ends of the opening are the first free end 31 and the second free end 32 respectively.

[0058] The first free end 31 is an end of the elastic sheet 30 away from the mass block 20, and the first free end 31 is fixedly connected to the inner wall of the shell 10. Exemplarily, the first free end 31 can be fixedly connected to the inner wall of the shell 10 in a welding manner. Exemplarily, the first free end 31 can be fixedly connected to the inner wall of the shell 10 in a bonding manner.

[0059] The second free end 32 is an end of the elastic sheet 30 close to the mass block 20, the second free end 32 is fixedly connected to one side of the mass block 20, and the second free end 32 can move relative to the shell 10, drive the mass block 20 to approach or move away from the first free end 31, so as to realize the movement of the mass block 20 relative to the shell 10.

[0060] The piezoelectric ceramic piece 40 is arranged on the elastic sheet 30, and when the piezoelectric ceramic piece 40 is electrified and deformed, the second free end 32 can approach or move away from the first free end 31.

[0061] The piezoelectric ceramic piece 40 is a structure with piezoelectric effect, which will deform when an electric field or mechanical stress is applied, thus generating an electric charge distribution and a potential difference.

[0062] Optionally, the piezoelectric ceramic piece 40 comprises a plurality of piezoelectric ceramic layers, each of which comprises an electrode layer and a ceramic layer. The plurality of ceramic layers and electrode layers are arranged in a multi-layer piezoelectric ceramic piece 40, and the electrode layer is an electrically conductive layer between two adjacent ceramic layers, usually made of metal materials such as copper, gold, silver, etc. The electrode layer is used to provide an electric field for the ceramic layer to activate the piezoelectric effect. In the structure of the multi-layer piezoelectric ceramic piece 40, each ceramic layer has two electrodes, one above and one below. In this way, when an external power source applies a voltage to the electrodes, an electric field is formed through the layers of the piezoelectric ceramic piece 40, thus causing the piezoelectric effect.

[0063] The piezoelectric ceramic piece 40 is fixedly connected to the elastic sheet 30. Exemplarily, the piezoelectric ceramic piece 40 is bonded to the elastic sheet 30. Exemplarily, the piezoelectric ceramic piece 40 is welded to the elastic sheet 30.

[0064] When the piezoelectric ceramic piece 40 is deformed by being energized, it can drive the elastic sheet 30 to also deform, thereby realizing the second free end 32 approaching or moving away from the first free end 31. Exemplarily, as shown in Figures 2 to 4 when the piezoelectric ceramic piece 40 is not energized, the piezoelectric ceramic piece 40 does not deform; when the piezoelectric ceramic piece 40 is energized with +10V voltage, the piezoelectric ceramic piece 40 deforms downward as a whole, while driving the elastic sheet 30 to deform downward; when the piezoelectric ceramic piece 40 is energized with -10V voltage, the piezoelectric ceramic piece 40 deforms upward as a whole, while driving the elastic sheet 30 to deform upward.

[0065] The first free end 31 is fixedly connected to the shell 10, and the second free end 32 is fixedly connected to the mass 20. When the elastic sheet 30 deforms, the second free end 32 can move away from or approach the first free end 31, driving the mass 20 to move relative to the shell 10 at a certain acceleration, thereby outputting vibration to the outside.

[0066] Optionally, when an alternating current signal is input to the piezoelectric ceramic piece 40 and the frequency is close to its natural frequency, resonance can be excited, so that the piezoelectric ceramic piece 40 generates larger vibration, thereby driving the mass 20 to output larger vibration.

[0067] The electric control 50 is electrically connected to the piezoelectric ceramic piece 40, and the electric control 50 is used to supply power to the piezoelectric ceramic piece 40.

[0068] The electric control 50 is a structure for transmitting electric signals. Exemplarily, the electric control 50 can be a flexible printed circuit (Flexible Printed Circuit, FPC). Exemplarily, the electric control 50 can be an elastic wire.

[0069] The electric control 50 is electrically connected with the piezoelectric ceramic piece 40. The piezoelectric ceramic piece 40 can be provided with multiple welding points, and the electric control 50 is welded on the welding points, so as to realize the electrical connection between the two.

[0070] When the motor works, the electric control 50 transmits the electric signal to the piezoelectric ceramic piece 40 on the elastic sheet 30, so that the piezoelectric ceramic piece 40 deforms under the action of the electric field, thereby driving the elastic sheet 30 to deform, so that the second free end 32 moves towards or away from the first free end 31, thereby driving the mass block 20 to move with the second free end 32 to move relative to the shell 10 at a certain acceleration, so as to realize the output of the vibration feedback to the outside.

[0071] The piezoelectric ceramic driving motor 100 provided by the embodiment of the application is characterized in that the piezoelectric ceramic piece 40 is arranged on the elastic sheet 30, the first free end 31 of the elastic sheet 30 is connected to the shell 10, and the second free end 32 is connected to the mass block 20. When the piezoelectric ceramic piece 40 is powered, the piezoelectric ceramic piece 40 deforms and drives the second free end 32 to move close to or away from the first free end 31, so as to drive the mass block 20 to move relative to the shell 10 at a certain acceleration, thereby realizing the output of the vibration to the outside. The piezoelectric ceramic piece 40 is used as the vibration source, so that the complex coil and magnet can be avoided, the movement structure is simple, the volume can be greatly reduced, and a large thickness size is not required to ensure the stable operation of the motor.

[0072] In some embodiments, the elastic sheet 30 includes a first elastic part 33 and a second elastic part 34 connected to one end of the first elastic part 33. The end of the first elastic part 33 away from the second elastic part 34 is the first free end 31, and the end of the second elastic part 34 away from the first elastic part 33 is the second free end 32. The piezoelectric ceramic piece 40 is arranged on the first elastic part 33 and / or the second elastic part 34.

[0073] The first elastic part 33 is the part of the elastic sheet 30 away from the mass block 20. The end of the first elastic part 33 away from the second elastic part 34 is the first free end 31, and the first elastic part 33 is fixedly connected to the shell 10 through the first free end 31.

[0074] The second elastic part 34 is the part of the elastic sheet 30 close to the mass block 20. The end of the second elastic part 34 away from the first elastic part 33 is the second free end 32, and the second elastic part 34 is fixedly connected to the mass block 20 through the second free end 32.

[0075] The first elastic part 33 and the second elastic part 34 are connected.

[0076] The piezoelectric ceramic piece 40 is arranged on the first elastic part 33 and / or the second elastic part 34 to drive the first elastic part 33 and / or the second elastic part 34 to deform, so as to drive the second free end 32 to move towards or away from the first free end 31, thereby driving the mass 20 to move relative to the shell 10 to output vibration.

[0077] Exemplarily, the piezoelectric ceramic piece 40 is arranged on the first elastic part 33, and the piezoelectric ceramic piece 40 deforms when energized, the first elastic part 33 deforms following the piezoelectric ceramic piece 40, the second elastic part 34 is driven to deform, and the second free end 32 is driven to move towards or away from the first free end 31, thereby driving the mass 20 to move relative to the shell 10 to output vibration.

[0078] Exemplarily, the piezoelectric ceramic piece 40 is arranged on the second elastic part 34, and the piezoelectric ceramic piece 40 deforms when energized, the second elastic part 34 deforms following the piezoelectric ceramic piece 40, the second free end 32 is driven to move towards or away from the first free end 31, thereby driving the mass 20 to move relative to the shell 10 to output vibration.

[0079] Exemplarily, the piezoelectric ceramic piece 40 is arranged on the first elastic part 33 and the second elastic part 34, and at this time, the piezoelectric ceramic piece 40 is independent of two, one is arranged on the first elastic part 33, and the other is arranged on the second elastic part 34, and when the two piezoelectric ceramic pieces 40 are energized and deformed, the first elastic part 33 and the second elastic part 34 are driven to deform, the second free end 32 is driven to move towards or away from the first free end 31, thereby driving the mass 20 to move relative to the shell 10 to output vibration.

[0080] In the embodiment, the piezoelectric ceramic piece 40 is arranged on the first elastic part 33 and / or the second elastic part 34, and after the piezoelectric ceramic piece 40 is energized, the piezoelectric ceramic piece 40 deforms and drives the first elastic part 33 and / or the second elastic part 34 to deform correspondingly, the second free end 32 on the second elastic part 34 is driven to move close to or away from the first free end 31 on the first elastic part 33, thereby driving the mass 20 to move relative to the shell 10 at a certain acceleration to output vibration.

[0081] In some embodiments, the elastic sheet 30 includes a closed end 35, and the first free end 31 and the second free end 32 are located on the same side of the closed end 35.

[0082] The closed end 35 is a closed part of the elastic sheet 30. The closed end 35 is connected to the first free end 31 and the second free end 32.

[0083] One end of the elastic sheet 30 is open, and the two sides of the opening are the first free end 31 and the second free end 32, respectively. The other end of the elastic sheet 30 is closed, which is the closed end 35.

[0084] The first free end 31 and the second free end 32 are located on the same side of the closed end 35. Exemplarily, as shown in Figure 1 the first free end 31 and the second free end 32 are both located on the upper side or the lower side of the closed end 35.

[0085] In the embodiment, the first free end 31 and the second free end 32 are located on the same side of the closed end 35, which can simplify the structure of the elastic sheet 30. Such a layout can also reduce unnecessary swinging and twisting caused by vibration, so that the vibration output is more stable and reliable, and the stability of the entire elastic sheet 30 system is increased. In addition, by placing the first free end 31 and the second free end 32 on the same side of the closed end 35, when the driving force acts on the elastic sheet 30, the vibration can be more directly transmitted from the closed end 35 to the second free end 32, which can achieve more effective vibration transmission and provide more efficient vibration output.

[0086] In some embodiments, the first free end 31 and the second free end 32 of the same elastic sheet 30 are located on different sides of the closed end 35. For example, they are located on the upper side and the lower side of the closed end 35, respectively.

[0087] As shown in Figure 5 some embodiments, the number of elastic sheets 30 is two, and the two elastic sheets 30 are connected to opposite sides of the mass block 20. The opening formed by the first elastic part 33 and the second elastic part 34 of one elastic sheet 30 has the same orientation as the opening formed by the first elastic part 33 and the second elastic part 34 of the other elastic sheet 30.

[0088] Exemplarily, as shown in Figure 5 the two elastic sheets 30 are located on the left side and the right side of the mass block 20, respectively. The opening formed by the first elastic part 33 and the second elastic part 34 in the left elastic sheet 30 faces upward, and piezoelectric ceramic pieces 40 are arranged on the first elastic part 33 and the second elastic part 34. When energized, the piezoelectric ceramic pieces 40 deform, driving the first elastic part 33 and the second elastic part 34 of the left elastic sheet 30 to deform, so that the opening of the elastic part becomes smaller or larger, driving the second free end 32 to move towards or away from the first free end 31, and driving the mass block 20 to move left or right relative to the shell 10. The opening formed by the first elastic part 33 and the second elastic part 34 in the right elastic sheet 30 also faces upward, and piezoelectric ceramic pieces 40 are arranged on the first elastic part 33 and the second elastic part 34. When energized, the piezoelectric ceramic pieces 40 deform, driving the first elastic part 33 and the second elastic part 34 of the right elastic sheet 30 to deform, so that the opening of the elastic part becomes smaller or larger, driving the second free end 32 to move towards or away from the first free end 31, and driving the mass block 20 to move left or right relative to the shell 10.

[0089] In this embodiment, by using two elastic sheets 30, and the elastic sheets 30 are arranged on opposite sides of the mass 20, balanced support can be provided on opposite sides of the mass 20, and the two elastic sheets 30 simultaneously provide driving force for the mass 20, which helps to ensure the stability of the driving force, so that the vibration output is more stable, and unnecessary swinging and distortion are reduced; the openings of the two elastic sheets 30 face the same direction, so that the stress points of the mass 20 are located at the same end of the mass 20, avoiding the tendency of the mass 20 to be twisted by torque, and helping to improve the stability of the movement of the mass 20.

[0090] As shown in Figure 6 , in some embodiments, the number of elastic sheets 30 is two, and the two elastic sheets 30 are connected to opposite sides of the mass 20, respectively, and the openings formed by the first elastic part 33 and the second elastic part 34 of one elastic sheet 30 face in the opposite direction of the openings formed by the first elastic part 33 and the second elastic part 34 of the other elastic sheet 30.

[0091] Exemplarily, as shown in Figure 6 , the two elastic sheets 30 are respectively located on the left side and the right side of the mass 20, the openings formed by the first elastic part 33 and the second elastic part 34 in the left elastic sheet 30 face downward, and piezoelectric ceramic pieces 40 are arranged on the first elastic part 33 and the second elastic part 34. When energized, the piezoelectric ceramic pieces 40 deform, driving the first elastic part 33 and the second elastic part 34 of the left elastic sheet 30 to deform, so that the openings of the elastic parts become smaller or larger, driving the second free end 32 to move towards or away from the first free end 31, and driving the mass 20 to move left or right relative to the housing 10. The openings formed by the first elastic part 33 and the second elastic part 34 in the right elastic sheet 30 face upward, and piezoelectric ceramic pieces 40 are arranged on the first elastic part 33 and the second elastic part 34. When energized, the piezoelectric ceramic pieces 40 deform, driving the first elastic part 33 and the second elastic part 34 of the right elastic sheet 30 to deform, so that the openings of the elastic parts become smaller or larger, driving the second free end 32 to move towards or away from the first free end 31, and driving the mass 20 to move left or right relative to the housing 10.

[0092] The polarization directions of the piezoelectric ceramic pieces 40 on the same elastic sheet 30 are the same, and the polarization directions of the piezoelectric ceramic pieces 40 on different elastic sheets 30 can be the same or different. The polarization direction of the piezoelectric ceramic piece 40 refers to a specific electric dipole moment direction formed inside the ceramic material during the processing process by applying an electric field, and this electric dipole moment direction is called the polarization direction.

[0093] When the polarization directions of the piezoelectric ceramics 40 on the two elastic sheets 30 are the same, the same electric signal is input, the deformation directions of the piezoelectric ceramics 40 are the same, and in order to realize the movement of the mass 20, opposite electric signals need to be transmitted to the piezoelectric ceramics 40 by the electric control 50.

[0094] As shown in the figure, Figure 7 When the polarization directions of the piezoelectric ceramics 40 on the two elastic sheets 30 are the same, the piezoelectric ceramics 40 on the left elastic sheet 30 input a positive voltage signal, the piezoelectric ceramics 40 on this side deform after being electrified, the elastic sheet 30 on this side is in a contraction state, its opening becomes smaller, the piezoelectric ceramics 40 drive the second free end 32 to move towards the first free end 31, drive the mass 20 to move left relative to the shell 10 along with the second free end 32, at the same time, the piezoelectric ceramics 40 on the right elastic sheet 30 input a negative voltage signal, the piezoelectric ceramics 40 on this side deform after being electrified, the elastic sheet 30 on this side is in an expansion state, its opening becomes larger, the piezoelectric ceramics 40 drive the second free end 32 to move away from the first free end 31, further drive the mass 20 to move left relative to the shell 10 along with the second free end 32, under the drive of the elastic sheets 30 on the left and right sides, the mass 20 moves left relative to the shell 10 at a certain acceleration, and outputs vibration to the outside.

[0095] As shown in the figure, Figure 8 When the polarization directions of the piezoelectric ceramics 40 on the two elastic sheets 30 are the same, the piezoelectric ceramics 40 on the left elastic sheet 30 input a negative voltage signal, the piezoelectric ceramics 40 on this side deform after being electrified, the elastic sheet 30 on this side is in an expansion state, its opening becomes larger, the piezoelectric ceramics 40 drive the second free end 32 to move away from the first free end 31, drive the mass 20 to move right relative to the shell 10 along with the second free end 32, at the same time, the piezoelectric ceramics 40 on the right elastic sheet 30 input a positive voltage signal, the piezoelectric ceramics 40 on this side deform after being electrified, the elastic sheet 30 on this side is in a contraction state, its opening becomes smaller, the piezoelectric ceramics 40 drive the second free end 32 to move towards the first free end 31, further drive the mass 20 to move right relative to the shell 10 along with the second free end 32, under the drive of the elastic sheets 30 on the left and right sides, the mass 20 moves right relative to the shell 10 at a certain acceleration, and outputs vibration to the outside.

[0096] When the polarization directions of the piezoelectric ceramics 40 on the two elastic sheets 30 are opposite, the same electric signal is input, the deformation directions of the piezoelectric ceramics 40 are opposite, and in order to realize the movement of the mass 20, the same electric signal needs to be transmitted to the piezoelectric ceramics 40 by the electric control 50.

[0097] As shown in the figure, Figure 7As shown, the polarization directions of the piezoelectric ceramics 40 on the two elastic sheets 30 are opposite, the piezoelectric ceramics 40 on the left elastic sheet 30 inputs a positive voltage signal or a negative voltage signal, the piezoelectric ceramics 40 on this side deforms after being electrified, the elastic sheet 30 on this side is in a contraction state, its opening becomes smaller, the piezoelectric ceramics 40 drives the second free end 32 to move towards the first free end 31, and the driving mass 20 follows the second free end 32 to move left relative to the shell 10, at the same time, the piezoelectric ceramics 40 on the right elastic sheet 30 inputs the same positive voltage signal or negative voltage signal, the piezoelectric ceramics 40 on this side deforms after being electrified, the elastic sheet 30 on this side is in an expansion state, its opening becomes larger, the piezoelectric ceramics 40 drives the second free end 32 to move away from the first free end 31, and further drives the driving mass 20 to follow the second free end 32 to move left relative to the shell 10, under the driving of the elastic sheets 30 on the left and right sides, the driving mass 20 moves left relative to the shell 10 at a certain acceleration, and outputs vibration to the outside.

[0098] As shown in the figure, Figure 8 As shown, the polarization directions of the piezoelectric ceramics 40 on the two elastic sheets 30 are opposite, the piezoelectric ceramics 40 on the left elastic sheet 30 inputs a positive voltage signal or a negative voltage signal, the piezoelectric ceramics 40 on this side deforms after being electrified, the elastic sheet 30 on this side is in a contraction state, its opening becomes smaller, the piezoelectric ceramics 40 drives the second free end 32 to move towards the first free end 31, and the driving mass 20 follows the second free end 32 to move left relative to the shell 10, at the same time, the piezoelectric ceramics 40 on the right elastic sheet 30 inputs the same positive voltage signal or negative voltage signal, the piezoelectric ceramics 40 on this side deforms after being electrified, the elastic sheet 30 on this side is in an expansion state, its opening becomes larger, the piezoelectric ceramics 40 drives the second free end 32 to move away from the first free end 31, and further drives the driving mass 20 to follow the second free end 32 to move left relative to the shell 10, under the driving of the elastic sheets 30 on the left and right sides, the driving mass 20 moves left relative to the shell 10 at a certain acceleration, and outputs vibration to the outside.

[0099] In this embodiment, by using two elastic sheets 30, and the elastic sheets 30 are arranged on opposite sides of the driving mass 20, balanced support can be provided on opposite sides of the driving mass 20, the two elastic sheets 30 simultaneously provide driving force for the driving mass 20, which helps to ensure the stability of the driving force, makes the vibration output more stable, and reduces unnecessary swinging and distortion; the openings of the two elastic sheets 30 face opposite directions, which can avoid the force of the elastic sheet 30 acting on the same end of the driving mass 20, so that the stress on the driving mass 20 is more uniform, and helps to further provide stable and balanced support for the driving mass 20.

[0100] As shown in the figure, Figure 1As shown, in some embodiments, the elastic sheet 30 includes a first elastic portion 33, a second elastic portion 34, and an elastic connecting portion 36 connecting the first elastic portion 33 and the second elastic portion 34, and the piezoelectric ceramic piece 40 is arranged on at least one of the first elastic portion 33, the second elastic portion 34, and the elastic connecting portion 36.

[0101] The elastic connecting portion 36 is a portion of the elastic sheet 30 connecting the first elastic portion 33 and the second elastic portion 34. The elastic connecting portion 36 can be connected to any position of the first elastic portion 33 and the second elastic portion 34, for example, two ends of the elastic connecting portion 36 are connected to the center positions of the first elastic portion 33 and the second elastic portion 34 respectively.

[0102] The elastic connecting portion 36 can have one bend, as shown in Figure 1 , Figures 5 to 8 .

[0103] The elastic connecting portion 36 can also have multiple bends. Exemplarily, as shown in Figure 9 .

[0104] The piezoelectric ceramic piece 40 is arranged on at least one of the first elastic portion 33, the second elastic portion 34, and the elastic connecting portion 36.

[0105] Exemplarily, the piezoelectric ceramic piece 40 is arranged only on the first elastic portion 33, and the piezoelectric ceramic piece 40 deforms after being powered, drives the first elastic portion 33 to deform, and transmits the deformation to the second elastic portion 34 through the elastic connecting portion 36, drives the second free end 32 to move towards or away from the first free end 31, thereby driving the mass 20 to move left and right relative to the shell 10, and realizing the output of vibration.

[0106] Exemplarily, the piezoelectric ceramic piece 40 is arranged only on the second elastic portion 34, and the piezoelectric ceramic piece 40 deforms after being powered, drives the second elastic portion 34 to deform, and drives the second free end 32 to move towards or away from the first free end 31, thereby driving the mass 20 to move left and right relative to the shell 10, and realizing the output of vibration.

[0107] Exemplarily, the piezoelectric ceramic piece 40 is arranged only on the elastic connecting portion 36, and the piezoelectric ceramic piece 40 deforms after being powered, drives the elastic connecting portion 36 to deform, and transmits the deformation of the elastic connecting portion 36 to the second elastic portion 34, drives the second free end 32 to move towards or away from the first free end 31, thereby driving the mass 20 to move left and right relative to the shell 10, and realizing the output of vibration.

[0108] Exemplarily, the piezoelectric ceramic piece 40 is arranged on the first elastic part 33 and the second elastic part 34, and the piezoelectric ceramic piece 40 deforms after being electrified, thereby driving the first elastic part 33 and the second elastic part 34 to deform, driving the second free end 32 to move towards or away from the first free end 31, thereby driving the mass 20 to move left and right relative to the shell 10, and realizing the output of vibration.

[0109] Exemplarily, the piezoelectric ceramic piece 40 is arranged on the first elastic part 33 and the elastic connecting part 36, and the piezoelectric ceramic piece 40 deforms after being electrified, thereby driving the first elastic part 33 and the elastic connecting part 36 to deform, and the deformation is transmitted to the second elastic part 34, driving the second free end 32 to move towards or away from the first free end 31, thereby driving the mass 20 to move left and right relative to the shell 10, and realizing the output of vibration.

[0110] Exemplarily, the piezoelectric ceramic piece 40 is arranged on the second elastic part 34 and the elastic connecting part 36, and the piezoelectric ceramic piece 40 deforms after being electrified, thereby driving the second elastic part 34 and the elastic connecting part 36 to deform, driving the second free end 32 to move towards or away from the first free end 31, thereby driving the mass 20 to move left and right relative to the shell 10, and realizing the output of vibration.

[0111] Exemplarily, the piezoelectric ceramic piece 40 is arranged on the first elastic part 33, the second elastic part 34 and the elastic connecting part 36, and the piezoelectric ceramic piece 40 deforms after being electrified, thereby driving the first elastic part 33, the second elastic part 34 and the elastic connecting part 36 to deform, driving the second free end 32 to move towards or away from the first free end 31, thereby driving the mass 20 to move left and right relative to the shell 10, and realizing the output of vibration.

[0112] In the embodiment, the piezoelectric ceramic piece 40 is arranged on at least one of the first elastic part 33, the second elastic part 34 and the elastic connecting part 36, and the piezoelectric ceramic piece 40 deforms when being driven by a driving signal, thereby driving the elastic sheet 30 to deform and driving the mass 20 to move relative to the shell 10, and realizing the output of vibration.

[0113] In some embodiments, one end of the elastic connecting part 36 is connected to one end of the first elastic part 33 away from the first free end 31, and the other end of the elastic connecting part 36 is connected to one end of the second elastic part 34 away from the second free end 32.

[0114] Exemplarily, as shown in Figure 1 , Figures 5 to 9 one end of the elastic connecting part 36 is connected to one end of the first elastic part 33 away from the first free end 31, and the other end of the elastic connecting part 36 is connected to one end of the second elastic part 34 away from the second free end 32.

[0115] By adopting the technical scheme, the elastic connecting part 36 is connected to the end of the first elastic part 33 and the second elastic part 34 respectively, the stable deformation of the elastic sheet 30 can be realized, the stability of the movement of the mass 20 is improved, the stable output of the vibration is realized, and the movement of the mass 20 can be driven by the deformation of the first elastic part 33 and the second elastic part 34, and the use efficiency of the mechanical energy generated by the deformation is improved.

[0116] In some embodiments, the number of the electric controls 50 is two, and the two electric controls 50 are used to supply power to the piezoelectric ceramics 40 on the two elastic sheets 30 respectively.

[0117] When the number of the elastic sheets 30 is two, the piezoelectric ceramics 40 on the two elastic sheets 30 can be supplied with power by two independent electric controls 50. When power is supplied, different frequency electric signals can be transmitted to the piezoelectric ceramics 40 based on actual use requirements, so as to generate different types of vibrations.

[0118] By adopting the technical scheme, the piezoelectric ceramics 40 on each elastic sheet 30 can be independently controlled, different frequency, amplitude and phase vibrations can be generated on the two elastic sheets 30 based on actual use requirements, the more flexible and diversified vibration mode is realized, and the richer vibration touch feedback effect is provided.

[0119] As shown in Figure 1 In some embodiments, the number of the electric controls 50 is one, the electric control 50 includes a first electric control subpart 51 and a second electric control subpart 52, the piezoelectric ceramics 40 includes a first piezoelectric ceramic subpart 41 and a second piezoelectric ceramic subpart 42, the first piezoelectric ceramic subpart 41 is arranged on the first elastic part 33, the second piezoelectric ceramic subpart 42 is arranged on the second elastic part 34, the first electric control subpart 51 is electrically connected with the first piezoelectric ceramic subpart 41, the second electric control subpart 52 is electrically connected with the first piezoelectric ceramic subpart 41 and the second piezoelectric ceramic subpart 42, and the second electric control subpart 52 is used to realize the electrical connection between the first piezoelectric ceramic subpart 41 and the second piezoelectric ceramic subpart 42.

[0120] The first electric control subpart 51 is used to transmit electric signals to the first piezoelectric ceramic subpart 41.

[0121] The second electric control subpart 52 is used to transmit electric signals from the first piezoelectric ceramic subpart 41 to the second piezoelectric ceramic subpart 42, so that the first piezoelectric ceramic subpart 41 and the second piezoelectric ceramic subpart 42 can be deformed synchronously, the synchronous deformation of the first elastic part 33 and the second elastic part 34 is realized, and the stability and reliability of the movement of the mass 20 are ensured.

[0122] In the embodiment, the power supply of the first piezoelectric ceramic subcomponent 41 and the second piezoelectric ceramic subcomponent 42 can be simultaneously controlled through an electric control component 50, which helps to reduce energy loss and system complexity, simplify the structure of the motor, and reduce the cost. The first electric control subcomponent 51 is directly electrically connected with the first piezoelectric ceramic subcomponent 41, and the second electric control subcomponent 52 is electrically connected with the first piezoelectric ceramic subcomponent 41 and the second piezoelectric ceramic subcomponent 42, so that the electric energy can be transmitted from the first piezoelectric ceramic subcomponent 41 to the second piezoelectric ceramic subcomponent 42, the synchronous deformation of the first elastic part 33 and the second elastic part 34 can be realized, the stability of the deformation of the elastic sheet 30 is improved, the stable movement of the mass block 20 relative to the shell 10 is driven, and the stable output of vibration is realized.

[0123] In some embodiments, the number of the elastic sheet 30 is one, and the piezoelectric ceramic driving motor 100 further comprises a telescopic component, and the elastic sheet 30 and the telescopic component are respectively connected to opposite sides of the mass block 20.

[0124] The telescopic component is a structure with one end deformation ability, for example, a telescopic rod, a spring, etc.

[0125] The number of the telescopic rod can be one or multiple. One end of the telescopic rod is connected to the shell 10, and the other end of the telescopic rod is connected to the mass block 20, so as to realize cooperation with the elastic sheet 30 and realize force balance on both sides of the mass block 20.

[0126] By adopting the above technical scheme, the elastic sheet 30 and the telescopic component are respectively connected to opposite sides of the mass block 20, the elastic sheet 30 can drive the mass block 20 to move relative to the shell 10 to realize the output of vibration to the outside, the telescopic component can provide balanced support for the mass block 20 to ensure the stability of the movement of the mass block 20, which helps to improve the stability and reliability of the motor vibration output.

[0127] The application also provides an electronic device comprising a screen and the piezoelectric ceramic driving motor 100 described above, and the screen is attached to the piezoelectric ceramic driving motor 100.

[0128] The electronic device can be a mobile phone, a computer, a tablet computer, a gamepad, or other devices with vibration feedback requirements.

[0129] The screen of the electronic device is attached to the piezoelectric ceramic driving motor 100, and when the piezoelectric ceramic driving motor 100 vibrates, the vibration can be transmitted to the screen to generate vibration haptic feedback on the screen.

[0130] The electronic device provided by the embodiment of the application can utilize the vibration of the driving motor to provide haptic feedback by attaching the screen to the piezoelectric ceramic driving motor 100. When the user touches or operates the screen, the driving motor will generate haptic feedback in a specific vibration mode and intensity, which helps to enhance the interactive experience.

[0131] The above merely describes the preferred embodiments of the present application, and is not intended to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A piezoelectric ceramic drive motor, characterized by, The application relates to a piezoelectric ceramic driving motor. The piezoelectric ceramic driving motor comprises a housing, a mass block, elastic sheets, piezoelectric ceramic pieces and electric controls. The housing has a containing cavity. The mass block is accommodated in the containing cavity and movably connected to the housing. The elastic sheets have first free ends and second free ends, the first free ends are connected to the housing, and the second free ends are connected to the mass block. The piezoelectric ceramic pieces are arranged on the elastic sheets, and the piezoelectric ceramic pieces can realize the second free ends close to or away from the first free ends when the piezoelectric ceramic pieces are deformed by being electrified. The electric controls are electrically connected to the piezoelectric ceramic pieces, and the electric controls are used for supplying power to the piezoelectric ceramic pieces.

2. The piezoceramic drive motor according to claim 1, characterized in that The number of the elastic sheets is two, the two elastic sheets are respectively connected to opposite sides of the mass block, the elastic sheet comprises a first elastic part, a second elastic part and an elastic connecting part connecting the first elastic part and the second elastic part, the elastic connecting part has multiple bending lines, and the piezoelectric ceramic pieces are arranged on each of the first elastic part, the second elastic part and the elastic connecting part.

3. The piezoceramic drive motor according to claim 2, characterized in that The number of the electric controls is one, the electric control comprises a first electric control sub-piece and a second electric control sub-piece, the piezoelectric ceramic pieces comprise a first piezoelectric ceramic sub-piece and a second piezoelectric ceramic sub-piece, the first piezoelectric ceramic sub-piece is arranged on the first elastic part, the second piezoelectric ceramic sub-piece is arranged on the second elastic part, the first electric control sub-piece is electrically connected to the first piezoelectric ceramic sub-piece, the second electric control sub-piece is electrically connected to the first piezoelectric ceramic sub-piece and the second piezoelectric ceramic sub-piece, and the second electric control sub-piece is used for realizing the electrical connection between the first piezoelectric ceramic sub-piece and the second piezoelectric ceramic sub-piece.

4. The piezoelectric ceramic drive motor according to claim 2, characterized by The elastic sheet comprises a closed end, and the first free end and the second free end are located on the same side of the closed end.

5. The piezoelectric ceramic drive motor according to claim 1, characterized by The opening formed by the first elastic part and the second elastic part of one elastic sheet is oriented in the same direction as the opening formed by the first elastic part and the second elastic part of the other elastic sheet.

6. An electronic device comprising a screen, characterized in that The number of the elastic sheets is two, the two elastic sheets are respectively connected to opposite sides of the mass block, and the opening formed by the first elastic part and the second elastic part of one elastic sheet is oriented in the opposite direction of the opening formed by the first elastic part and the second elastic part of the other elastic sheet. One end of the elastic connecting part is connected to one end of the first elastic part away from the first free end, and the other end of the elastic connecting part is connected to one end of the second elastic part away from the second free end. The piezoelectric ceramic driving motor is further connected to a screen.

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