Piezoelectric module and electronic equipment

Abstract

The invention relates to the technical field of piezoelectric structures, in particular to a piezoelectric module and electronic equipment, the piezoelectric module comprises a piezoelectric assembly, a supporting unit and a buffer medium, a connection area of the piezoelectric assembly is connected with the supporting unit, and a deformation area and the supporting unit form a deformation space; and the buffer medium is arranged in the deformation space. According to the piezoelectric module, the deformation space is formed between the piezoelectric assembly and the supporting unit, so that the piezoelectric assembly is not interfered by other parts when the piezoelectric assembly deforms, deformation and vibration of the piezoelectric assembly are facilitated, and the voltage needing to be applied to the piezoelectric module can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of piezoelectric structures, and in particular to a piezoelectric module and an electronic device. Background Art

[0002] Piezoelectric modules are electro-mechanical displacement converters made using the piezoelectric properties of certain crystal materials. They are small, powerful, and highly responsive.

[0003] The piezoelectric module includes a piezoelectric component. The piezoelectric component generates voltage when pressure is applied, and generates vibration when voltage is applied. By pressing the piezoelectric component to generate voltage, the piezoelectric component can trigger the command operation of other components. By applying voltage to the piezoelectric component, other components can generate vibration and feedback to the user.

[0004] In the related art, in order to make the piezoelectric component produce obvious vibration, the piezoelectric module needs to apply a large voltage to the piezoelectric component. Summary of the invention

[0005] In view of this, the present application provides a piezoelectric module and an electronic device to reduce the voltage required for the piezoelectric component to generate significant vibration.

[0006] Specifically, the following technical solutions are included:

[0007] The first aspect of the present application provides a piezoelectric module, the piezoelectric module includes a piezoelectric component, a support unit and a buffer medium, one side of the piezoelectric component has a connection area and a deformation area. The connection area is connected to the support unit. A deformation space is formed between the deformation area and the support unit. The buffer medium is arranged in the deformation space.

[0008] Optionally, the piezoelectric assembly includes a piezoelectric element and an elastic member, and the piezoelectric element is connected to the elastic member along the piezoelectric assembly and forms an extrusion cavity with the elastic member.

[0009] Optionally, the elastic member is located between the piezoelectric element and the support unit in the deformation space and is connected to the support unit, or the elastic member and the deformation area are located on opposite sides of the piezoelectric element along the deformation direction of the piezoelectric component.

[0010] Optionally, the elastic member includes a supporting section and a deformation section, the deformation sections are respectively provided on two opposite sides of the supporting section, and the deformation sections located on two opposite sides of the supporting section are respectively connected to the piezoelectric element.

[0011] Optionally, the support unit includes a support plate and a positioning portion, the support plate is provided with the positioning portion, the positioning portion is connected to the connection area, and the deformation space is formed between the support plate and the deformation area.

[0012] Optionally, the support segment has a positioning hole, and the positioning hole passes through the support segment along the deformation direction of the piezoelectric component.

[0013] Optionally, a portion of the support plate protrudes toward the piezoelectric element to form the positioning portion.

[0014] Optionally, the piezoelectric component further includes a conductive part, wherein the conductive part and the elastic member are respectively located on opposite sides of the piezoelectric element along the deformation direction of the piezoelectric component, the conductive part is electrically connected to the piezoelectric element, and the conductive part has the connection area.

[0015] A second aspect of the present application provides an electronic device, which includes a triggering unit and a piezoelectric module as described in the above technical solution, wherein the triggering unit is connected to the piezoelectric component.

[0016] Optionally, the electronic device includes a middle frame, and the supporting unit is installed on the middle frame.

[0017] The beneficial effects of the technical solution provided by the embodiment of the present application include at least: the support unit is connected to the connection area, which can provide support for the piezoelectric component so that the piezoelectric component can be continuously subjected to pressure. The deformation space formed between the deformation area and the piezoelectric component provides an area for the piezoelectric component to move when it is deformed. The active area can prevent the support unit from interfering with the piezoelectric component, which is beneficial for other components to apply a smaller voltage to the piezoelectric component to generate obvious vibrations, and is also beneficial for the piezoelectric component to feed back the vibration to the user. A buffer medium is provided in the deformation space, which can separate the deformation area of ​​the piezoelectric component from the support unit, reducing the possibility of damage caused by collision with the support unit when the piezoelectric component is deformed.

[0018] To summarize, the piezoelectric module of the present application forms a deformation space between the piezoelectric component and the support unit so that the piezoelectric component will not be interfered with by other components when it is deformed, which is beneficial to the deformation and vibration of the piezoelectric component, thereby reducing the voltage required to be applied to the piezoelectric module. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 A schematic diagram of the structure of a piezoelectric module provided in an embodiment of the present application;

[0021] Figure 2 A schematic top view of a piezoelectric component provided in an embodiment of the present application;

[0022] Figure 3 A schematic diagram of the structure of a piezoelectric component provided in an embodiment of the present application;

[0023] Figure 4 A schematic diagram of the structure of another piezoelectric module provided in an embodiment of the present application;

[0024] Figure 5 A schematic diagram of the structure of another piezoelectric module provided in an embodiment of the present application;

[0025] Figure 6 A schematic top view of an elastic member provided in an embodiment of the present application;

[0026] Figure 7 A schematic top view of a piezoelectric element provided in an embodiment of the present application;

[0027] Figure 8 A schematic front view of a piezoelectric element provided in an embodiment of the present application;

[0028] Fig. 9 A schematic diagram of a partial structure of an electronic device provided in an embodiment of the present application;

[0029] Fig.10 A partial structural diagram of another electronic device provided in an embodiment of the present application;

[0030] Fig.11 A partial structural diagram of another electronic device provided in an embodiment of the present application;

[0031] Fig.12 A partial structural diagram of an electronic device with two triggering parts provided in an embodiment of the present application.

[0032] The reference numerals in the figures represent respectively:

[0033] 100. Deformation space;

[0034] 1. Piezoelectric component; 101. extrusion cavity; 1011. connection area; 1012. deformation area; 11. piezoelectric element; 111. pin; 12. elastic member; 121. support section; 122. deformation section; 1201. positioning hole; 13. conductive part;

[0035] 2. Support unit; 21. Support plate; 22. Positioning unit;

[0036] 3. Buffer medium;

[0037] 4. Trigger unit.

[0038] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0040] The directional nouns involved in the embodiments of the present application, such as "upper", "lower", "side", etc., are generally represented by Figure 1 The relative relationship of the orientation shown in the figure is used as the basis, and these orientation terms are used only to more clearly describe the relationship between structures, not to describe absolute orientation. When the product is placed in different postures, the orientation may change, for example, "up" and "down" may be interchangeable.

[0041] Unless otherwise defined, all technical terms used in the embodiments of the present application have the same meanings as commonly understood by those of ordinary skill in the art.

[0042] Some technical terms related to the embodiments of the present application are explained below.

[0043] Piezoelectric effect: When the piezoelectric component 1 is deformed by an external force in a certain direction, polarization will occur inside, and opposite positive and negative charges will appear at two locations on the surface of the piezoelectric component 1. When the external force is removed, the piezoelectric component 1 will return to a neutral state.

[0044] Inverse piezoelectric effect: When voltage is applied in the polarization direction of the piezoelectric component 1, the piezoelectric component 1 will also deform. After the electric field is removed, the piezoelectric component 1 returns to its shape before deformation.

[0045] In order to make the technical solutions and advantages of the present application more clear, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0046] The first aspect of the present application provides a piezoelectric module, such as Figure 1As shown, the piezoelectric module includes a piezoelectric component 1, a support unit 2 and a buffer medium 3. One side of the piezoelectric component 1 has a connection area 1011 and a deformation area 1012. The connection area 1011 is connected to the support unit 2, and a deformation space 100 is formed between the deformation area 1012 and the support unit 2. The buffer medium 3 is arranged in the deformation space 100. Figure 1 The direction indicated by the middle arrow is the deformation direction F of the piezoelectric component 1 .

[0047] It can be understood that the support unit 2 is connected to the connection area 1011, which can provide support for the piezoelectric component 1 so that the piezoelectric component 1 can be continuously subjected to pressure; the deformation space 100 formed between the support unit 2 and the deformation area 1012 provides an active area for the deformation area 1012 when it is deformed. The movable area can prevent the support unit 2 from interfering with the piezoelectric component 1, which is conducive to other components applying a small voltage to the piezoelectric component 1 to generate obvious vibration, and is also conducive to the piezoelectric component 1 feeding back the vibration to the user; the deformation space 100 is provided with a buffer medium 3, which can separate the deformation area 1012 of the piezoelectric component 1 from the support unit 2, and reduce the situation where the piezoelectric component 1 collides with the support unit 2 when it is deformed and is damaged.

[0048] In the embodiment of the present application, the connection area 1011 and the deformation area 1012 may be located on the same component of the piezoelectric component 1 , or may be located on different components of the piezoelectric component 1 .

[0049] In the related art, the cantilever beam is characterized in that one end is a fixed support and the other end is a free end. Figure 2 As shown, the deformation region 1012 can extend along the circumference of the connection region 1011, which is conducive to the deformation region 1012 forming a cantilever beam. Specifically, the position where the deformation region 1012 is connected to the connection region 1011 can be used as a fixed support, and the position not connected to the connection region 1011 can be used as a free end, which is conducive to the deformation region 1012 to deform when subjected to pressure.

[0050] Optionally, the connection region 1011 may also extend along the circumference of the deformation region 1012 .

[0051] In the embodiment of the present application, when subjected to pressure, the piezoelectric component 1 deforms, generates a piezoelectric effect, and generates charges of opposite polarity at two different positions. When the above two different positions are connected to the circuit of other components, voltage will be generated. When other components receive the voltage, they can trigger corresponding command operations, such as turning on the power, increasing or decreasing the volume, etc.

[0052] When voltage is applied to two different positions on the piezoelectric component 1, the piezoelectric component 1 produces an inverse piezoelectric effect and deforms. When the voltage changes, the degree of deformation of the piezoelectric component 1 also changes accordingly. By continuously changing the direction of the voltage, the deformation direction of the piezoelectric component 1 can be continuously changed, thereby generating vibration.

[0053] Taking the application of the piezoelectric module of the present application to a key as an example, the key includes a keycap, which is connected to the piezoelectric component 1. When the user presses the keycap, the piezoelectric component 1 can deform and generate voltage. The voltage is received by the processing module, and the processing module outputs a voltage with a vibration waveform to the piezoelectric component 1 through a high-voltage amplifier, thereby causing the piezoelectric component 1 to vibrate and feedback to the user through the keycap.

[0054] In an embodiment of the present application, the piezoelectric module may also include a processing module and a driving module. When the piezoelectric component 1 is pressurized and generates a voltage, the processing module can detect the magnitude of the voltage. If the voltage reaches a threshold, the driving module is controlled to output a waveform voltage to the piezoelectric component 1, causing the piezoelectric component 1 to start vibrating.

[0055] In the embodiment of the present application, the support unit 2 needs to leave enough deformation space 100 for the deformation area of ​​the piezoelectric component 1 while supporting the piezoelectric component 1, so that the piezoelectric component 1 can vibrate significantly when a small voltage is applied. Exemplarily, a plane perpendicular to the deformation direction F of the piezoelectric component 1 is used as a projection plane, and the orthographic projection of the piezoelectric component 1 on the projection plane is completely located within the orthographic projection of the support unit 2 on the projection plane. In this way, when assembling the piezoelectric module of the present application, sufficient deformation space 100 can be divided for the piezoelectric component 1 by the support unit 2, thereby avoiding interference of other components with the piezoelectric component 1. Optionally, the support unit 2 is connected to the piezoelectric component 1 by adhesives such as glue. Figure 1 As shown, the support unit 2 may be in a straight plate structure.

[0056] In the embodiment of the present application, the buffer medium 3 can replace the support unit 2 to collide with the piezoelectric component 1. When the buffer medium 3 collides with the support unit 2, it can be compressed to buffer the deformed piezoelectric component 1, thereby improving the working safety of the piezoelectric component 1. Optionally, the material of the buffer medium 3 can be foam, silica gel, etc.

[0057] In the embodiment of the present application, the buffer medium 3 completely fills the deformation space 100, or partially fills the deformation space 100. The buffer medium 3 can be fixed on the support unit 2 or on the piezoelectric component 1. Figure 1 As shown, the damping medium is fixed to the support unit 2 .

[0058] In summary, the piezoelectric module of the present application forms a deformation space 100 between the piezoelectric component 1 and the support unit 2, so that the piezoelectric component 1 will not be interfered with by other components when it is deformed, which is beneficial to the deformation and vibration of the piezoelectric component 1, thereby reducing the voltage required to be applied to the piezoelectric module.

[0059] In some embodiments of the present application, Figure 3 As shown, the piezoelectric assembly 1 includes a piezoelectric element 11 and an elastic member 12 . The piezoelectric element 11 is connected to the elastic member 12 and forms an extrusion cavity 101 with the elastic member 12 .

[0060] It is understandable that the piezoelectric element 11 can generate voltage when compressed and generate vibration when voltage is applied. The extrusion cavity 101 provides space for the elastic member 12 and the deformation area 1012 of the piezoelectric element 11 to deform, which is conducive to the deformation of both. When recovering from the deformation, the elastic member 12 can drive the piezoelectric element 11 to return to the shape before the deformation.

[0061] In the embodiment of the present application, the positional relationship between the elastic member 12 and the piezoelectric element 11 is always changing during the deformation process. When the piezoelectric assembly 1 is subjected to pressure, the elastic member 12 and the piezoelectric element 11 will move closer to each other. When the pressure is removed, the elastic member 12 and the piezoelectric element 11 will move away from each other. The extrusion cavity 101 can provide sufficient space for the two to approach each other to avoid interference between the two.

[0062] Specifically, the elastic member 12 can be arranged on the side of the piezoelectric element 11 away from the support unit 2. When directly subjected to pressure, the elastic member 12 drives the piezoelectric element 11 to deform, the elastic member 12 approaches the piezoelectric element 11, and the extrusion cavity 101 is squeezed and the volume is reduced; when the pressure is removed, the extrusion cavity 101, the elastic member 12 and the piezoelectric element 11 each recover from the deformation, and the recovery speed of the elastic member 12 is faster than that of the piezoelectric element 11, and the piezoelectric element 11 can be driven to recover to the shape before the deformation.

[0063] The elastic member 12 can also be arranged on the side of the piezoelectric element 11 close to the support unit 2, and the support unit 2 is connected to the elastic member 12. When the piezoelectric element 11 is directly subjected to pressure, the piezoelectric element 11 drives the elastic member 12 to deform, the piezoelectric element 11 is close to the elastic member 12, the extrusion cavity 101 is squeezed and the volume is reduced; when the pressure is removed, the extrusion cavity 101, the elastic member 12 and the piezoelectric element 11 each recover from the deformation, and the recovery speed of the elastic member 12 is faster than that of the piezoelectric element 11, and the piezoelectric element 11 can be driven to recover to the shape before the deformation.

[0064] In the embodiment of the present application, the piezoelectric element 11 is generally also electrically connected to other components so that other components can apply voltage to the piezoelectric element 11. To this end, two pins 111 may be provided on the piezoelectric element 11. The two pins 111 may be located on the same surface of the piezoelectric element 11, such as Figure 7 As shown, two pins 111 are located on the top surface of the piezoelectric element. The pins 111 at this position have a larger area, which is conducive to the electrical connection between other components and the piezoelectric element 11. Figure 8 As shown, the two pins 111 are located on the side surfaces of the piezoelectric element 11. The two pins 111 may also be located on different surfaces of the piezoelectric element 11.

[0065] Optionally, the piezoelectric element 11 is a lead zirconate titanate piezoelectric ceramic sheet, and the shape may be rectangular, circular, polygonal or the like.

[0066] Optionally, the elastic member 12 is made of stainless steel, titanium alloy, etc., and its shape can be spherical segment, trapezoidal, arc-shaped, etc. Optionally, a pressure sensor can be provided on the elastic member 12 to facilitate the pressure sensor to detect the pressure on the elastic member 12. Optionally, the thickness of the elastic member 12 is 0.1 to 0.2 mm, and the material can be 301 stainless steel or 304 stainless steel.

[0067] In the above embodiment, in order to protect the elastic member 12 so that it can help the piezoelectric element 11 recover from deformation, it can be provided as follows: Figure 4 and Figure 5 As shown, the elastic member 12 is located between the piezoelectric element 11 and the supporting unit 2 , or the elastic member 12 and the deformation region 1012 are located on opposite sides of the piezoelectric element 11 along the deformation direction F of the piezoelectric component 1 .

[0068] It is understandable that the deformation process of the elastic member 12 located between the piezoelectric element 11 and the support unit 2 will not be disturbed by other components. Under the support of the support unit 2, the compressed piezoelectric element 11 can transfer the pressure to the elastic member 12, causing the elastic member 12 to deform. When the pressure is removed, the elastic member 12 can drive the piezoelectric element 11 to return to the shape before the deformation.

[0069] It can be understood that the elastic member 12 and the deformation region 1012 are respectively located on opposite sides of the piezoelectric element 11 along the deformation direction F of the piezoelectric component 1, so that the elastic member 12 can directly withstand the pressure from the outside and transmit the pressure to the piezoelectric component 1. At the same time, when the elastic member 12 is deformed, it will not be disturbed by the support unit 2, which is conducive to the elastic member 12 driving the piezoelectric element 11 to recover from the deformation to the shape before the deformation.

[0070] In some embodiments of the present application, the structure of the elastic member 12 can be: Figure 3 and Figure 5As shown, the elastic member 12 includes a supporting segment 121 and a deforming segment 122 . The deforming segments 122 are respectively disposed on opposite sides of the supporting segment 121 . The deforming segments 122 located on opposite sides of the supporting segment 121 are respectively connected to the piezoelectric element 11 .

[0071] It is understandable that the deformation segment 122 deforms when subjected to pressure and drives the piezoelectric element 11 to return to its shape before deformation when the pressure is removed. The support segment 121 supports the deformation segment 122, which is conducive to the deformation of the deformation segment 122 when subjected to pressure.

[0072] Specifically, when directly subjected to pressure, the deformation segment 122 connecting the support segment 121 and the piezoelectric element 11 maintains a squeezed state, the piezoelectric element 11 approaches the support segment 121, and the extrusion cavity 101 is squeezed and the volume is reduced; when the pressure is removed, the extrusion cavity 101, the deformation segment 122 and the piezoelectric element 11 each recover from the deformation, and the recovery speed of the deformation segment 122 is faster than that of the piezoelectric element 11, which can drive the piezoelectric element 11 to recover to the shape before the deformation.

[0073] In the embodiment of the present application, the support segment 121 can be connected to the support unit 2 to support the deformation segment 122. The support segment 121 can also be located on opposite sides of the piezoelectric element 11 along the deformation direction of the piezoelectric assembly 1 with the support unit 2 to withstand the pressure from the user, deform and drive the piezoelectric element 11 to generate voltage.

[0074] In the above embodiment, the installation position of the support section 121 determines the deformation performance of the deformation section 122. Generally speaking, when the support section 121 is located at the center of the piezoelectric element 11, the deformation section 122 has better deformation performance. In addition, the surface of the elastic member 12 is generally smooth, which is not conducive to the assembly personnel to use. In order to improve the accuracy of the support section 121 installed on the piezoelectric element 11, it can be set as follows: Figure 6 As shown, the elastic member 12 has a positioning hole 1201 , and the positioning hole 1201 penetrates the elastic member 12 along the deformation direction F of the piezoelectric component 1 .

[0075] It is understandable that the positioning hole 1201 can also play a positioning role when assembling the elastic member 12. The assembler can determine the positional relationship between the elastic member 12 and the piezoelectric element 11 through the positioning hole 1201, thereby determining the installation position of the elastic member 12. For example, an identification portion can be provided on the piezoelectric element 11, and when the center of the positioning hole 1201 coincides with the center of the identification portion, the assembler can assemble the deformation segment 122 and the piezoelectric element 11.

[0076] Optionally, the cross-sectional shape of the positioning hole 1201 is circular.

[0077] In order to leave a deformation space 100 between the support unit 2 and the piezoelectric component 1, it can be arranged as follows: Figure 5 As shown, the support unit 2 includes a support plate 21 and a positioning portion 22 . The support plate 21 is provided with the positioning portion 22 . The positioning portion 22 is connected to the connection area 1011 . A deformation space 100 is formed between the support plate 21 and the deformation area 1012 .

[0078] It is understandable that the support plate 21 can divide sufficient deformation space 100 for the piezoelectric element 11 in the length direction and the width direction, which is conducive to the deformation of the piezoelectric element 11 and avoids interference of other components on the piezoelectric element 11. The positioning portion 22 can separate the support plate 21 and the piezoelectric element 11 so that sufficient deformation space 100 can be maintained between the two in the height direction.

[0079] For example, by reasonably setting the size relationship between the support plate 21 and the piezoelectric element 11, the piezoelectric element 11 of the present application can have sufficient deformation space 100 in the length direction and the width direction. Taking the plane perpendicular to the deformation direction F of the piezoelectric assembly 1 as the projection plane, the orthographic projection of the piezoelectric element 11 on the projection plane is completely located within the orthographic projection of the support plate 21 on the projection plane, so that other components can be prevented from interfering with the piezoelectric element 11 during assembly.

[0080] Optionally, along the deformation direction F of the piezoelectric component 1 , from the supporting section 121 to the piezoelectric element 11 , the cross-sectional area of ​​the extrusion cavity 101 gradually decreases.

[0081] In some embodiments, the positioning portion 22 is located in the middle of the support plate 21 , and the cross-sectional shape of the deformation space 100 along the deformation direction perpendicular to the piezoelectric component 1 is annular. Such a configuration is conducive to providing a space for the piezoelectric element 11 to deform.

[0082] Optionally, the positioning portion 22 may be mounted on the support plate 21 by welding or the like.

[0083] Optionally, the positioning portion 22 may be made of materials such as silicone and foam, and may be connected to the piezoelectric element 11 by adhesives such as tape and glue. The number of the positioning portions 22 may be 1, 2, 3, etc. Figure 5 As shown, the shape of the positioning portion is one.

[0084] Optionally, the height of the positioning portion 22 is greater than 50 micrometers.

[0085] Optionally, the positioning portion 22 may be truncated cone-shaped or prism-shaped.

[0086] In the above embodiment, the supporting unit 2 mainly plays a supporting role. In order to improve the production efficiency of the supporting unit 2, the following can be set: Figure 5As shown, a portion of the support plate 21 protrudes toward the piezoelectric element 11 to form a positioning portion 22 .

[0087] During manufacturing, the support unit 2 can be produced by a stamping process to improve the production efficiency of the support unit 2. Since the pressure on the piezoelectric component 1 is generally small, the structural strength of the stamped positioning portion 22 is generally sufficient to support the piezoelectric component 1, which is beneficial to reducing the production cost of the piezoelectric module of the present application.

[0088] like Figure 5 As shown, the positioning portion 22 is a hollow structure, and the longitudinal cross-section of the hollow portion is trapezoidal.

[0089] It is understandable that the piezoelectric element 11 generally needs to be electrically connected to other components so that other components can apply voltage to it to generate vibration and provide feedback to the user. Since the piezoelectric element 11 and the elastic member 12 will deform during the vibration process, in order to avoid the deformed elastic member 12 interfering with the position of the electrical connection, it can be set as follows: Figure 4 As shown, the piezoelectric component 1 further includes a conductive portion 13 , which and the elastic member 12 are respectively located on opposite sides of the piezoelectric element 11 along the deformation direction F of the piezoelectric component 1 , the conductive portion 13 is electrically connected to the piezoelectric element 11 , and the conductive portion 13 has a connection area 1011 .

[0090] It can be understood that the conductive part 13 is electrically connected to the piezoelectric element 11, providing a position for the piezoelectric element 11 to be electrically connected to other components. The conductive part 13 is installed on the support unit 2, which can separate the support unit 2 and the piezoelectric element 11, and can also be electrically connected to other components, so that these components can be electrically connected to the piezoelectric element 11. Other components apply voltage to the piezoelectric element 11 through the conductive part 13, which can cause the piezoelectric element 11 to vibrate. The conductive part 13 and the elastic member 12 are respectively located on opposite sides of the piezoelectric element 11 along the deformation direction F of the piezoelectric assembly 1, so that the elastic member 12 will not interfere with the conductive part 13 when it is deformed.

[0091] Optionally, the conductive part 13 is made of stainless steel or titanium alloy. The number of the conductive parts can be 1, 2, 3, etc.

[0092] Optionally, the height of the conductive portion 13 is greater than 50 micrometers.

[0093] Optionally, the conductive part 13 may be in the shape of a spherical segment. A spherical segment refers to a portion of a sphere cut off by a plane, and the cross section is the bottom surface of the spherical segment. The bottom surface of the conductive part 13 is in contact with the support unit 2, and the curved surface is electrically connected to the piezoelectric element 11. The conductive part 13 may also be in the shape of a cylinder, a cube, etc.

[0094] In some embodiments, the conductive portion 13 is located in the middle of the support unit 2 , and the cross-sectional shape of the deformation space 100 along the deformation direction perpendicular to the piezoelectric component 1 is annular. Such a configuration is conducive to providing a space for the piezoelectric element 11 to deform.

[0095] A second aspect of the present application provides an electronic device, such as Fig. 9 , Fig.10 , Fig.11 and Fig.12 As shown, it includes a trigger part 4 and a piezoelectric module as in the above embodiment, and the trigger part 4 is connected to the piezoelectric component 1.

[0096] It can be understood that, due to the adoption of the piezoelectric module of the above embodiment, the electronic device of the present application has the same technical effects as the above embodiment, which will not be described in detail here.

[0097] In an embodiment of the present application, the support unit 2 can be a straight plate structure, and the piezoelectric component 1 can include a piezoelectric element 11 and an elastic member 12, the elastic member 12 is connected to the support unit 2, and the piezoelectric element 11 and the support unit are respectively located on opposite sides of the elastic member 12 along the deformation direction of the piezoelectric component 1.

[0098] In the above embodiment, as a component supporting the piezoelectric component 1, the support unit 2 can be installed on the middle frame to transmit the pressure generated by the piezoelectric component 1 to the middle frame, so as to facilitate the normal operation of the piezoelectric component 1. In the embodiment of the present application, the support unit 2 can be connected to the middle frame by bonding, clamping and welding.

[0099] In an embodiment of the present application, an electronic device may include a keycap, the keycap having a trigger portion 4, and the trigger portion 4 is connected to a piezoelectric component 1. When a user presses the keycap, the piezoelectric component 1 can deform and generate a voltage. The voltage is received by a processing module, and a voltage having a vibration waveform is output to the piezoelectric component 1 through a high-voltage amplifier, thereby causing the piezoelectric component 1 to vibrate and feedback to the user through the keycap.

[0100] like Fig.10 and Fig.12 As shown, in some embodiments, the key cap has two triggering parts 4, and each triggering part 4 is connected to a piezoelectric component 1 of a piezoelectric module.

[0101] In the embodiment of the present application, the triggering part 4 is a screen, and the screen is connected to the piezoelectric component 1. When the user presses the screen, the piezoelectric component 1 can deform and generate voltage. The voltage is received by the processing module, and a voltage with a vibration waveform is output to the piezoelectric component 1 through the high-voltage amplifier, so that the piezoelectric component 1 vibrates and is fed back to the user through the screen.

[0102] In the embodiment of the present application, the triggering part 4 is a back cover, which is connected to the piezoelectric component 1. When the user presses the back cover, the piezoelectric component 1 can deform and generate voltage. The voltage is received by the processing module, and a voltage with a vibration waveform is output to the piezoelectric component 1 through the high-voltage amplifier, so that the piezoelectric component 1 vibrates and is fed back to the user through the back cover.

[0103] In summary, the first aspect of the present application provides a piezoelectric module, wherein the support unit 2 is connected to the piezoelectric component 1, and can provide support for the piezoelectric component 1 so that the piezoelectric component 1 can be continuously subjected to pressure; the deformation space 100 formed between the support unit 2 and the piezoelectric component 1 provides an area for the piezoelectric component 1 to move during deformation, thereby avoiding interference of the support unit 2 with the piezoelectric component 1, which is beneficial for other components to apply a smaller voltage to the piezoelectric component 1 to generate obvious vibration, and is also beneficial for the piezoelectric component 1 to feed back the vibration to the user; a buffer medium 3 is provided in the deformation space 100, which can separate the piezoelectric component 1 from the support unit 2, thereby reducing the damage caused by collision between the piezoelectric component 1 and the support unit 2 when the piezoelectric component 1 is deformed.

[0104] A second aspect of the present application provides an electronic device.

[0105] In the present application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The term "plurality" refers to two or more than two, unless otherwise clearly defined.

[0106] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the present application disclosed herein. The present application is intended to cover any variations, uses or adaptations of the present application, which follow the general principles of the present application and include common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only.

[0107] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A piezoelectric module, characterized in that: The piezoelectric module comprises a piezoelectric component (1), a supporting unit (2) and a buffer medium (3), wherein one side of the piezoelectric component (1) has a connection area (1011) and a deformation area (1012), wherein: The connection area (1011) is connected to the support unit (2); A deformation space (100) is formed between the deformation area (1012) and the support unit (2); The buffer medium (3) is arranged in the deformation space (100).

2. The piezoelectric module according to claim 1, characterized in that: The piezoelectric component (1) comprises a piezoelectric element (11) and an elastic member (12); the piezoelectric element (11) is connected to the elastic member (12) and forms an extrusion cavity (101) with the elastic member (12).

3. The piezoelectric module according to claim 2, characterized in that: The elastic member (12) is located between the piezoelectric element (11) and the supporting unit (2). or, The elastic member (12) and the deformation region (1012) are respectively located on two opposite sides of the piezoelectric element (11) along the deformation direction of the piezoelectric component (1).

4. The piezoelectric module according to claim 2, characterized in that: The elastic member (12) comprises a supporting section (121) and a deforming section (122); the deforming sections (122) are respectively provided on two opposite sides of the supporting section (121); and the deforming sections (122) located on two opposite sides of the supporting section (121) are respectively connected to the piezoelectric element (11).

5. The piezoelectric module according to claim 4, characterized in that: The support section (121) has a positioning hole (1201), and the positioning hole (1201) passes through the support section (121) along the deformation direction of the piezoelectric component (1).

6. The piezoelectric module according to claim 2, characterized in that: The support unit (2) comprises a support plate (21) and a positioning portion (22); the support plate (21) is provided with the positioning portion (22); the positioning portion (22) is connected to the connection area (1011); and the deformation space (100) is formed between the support plate (21) and the deformation area (1012).

7. The piezoelectric module according to claim 6, characterized in that: A portion of the support plate (21) protrudes toward the piezoelectric element (11) to form the positioning portion (22).

8. The piezoelectric module according to claim 2, characterized in that: The piezoelectric component (1) also includes a conductive part (13), wherein the conductive part (13) and the elastic member (12) are respectively located on opposite sides of the piezoelectric element (11) along the deformation direction of the piezoelectric component (1), the conductive part (13) is electrically connected to the piezoelectric element (11), and the conductive part (13) has the connection area (1011).

9. An electronic device, characterized in that: The electronic device comprises a triggering part (4) and a piezoelectric module according to any one of claims 1 to 8, wherein the triggering part (4) is connected to the piezoelectric component (1).

10. The electronic device according to claim 9, characterized in that: The electronic device comprises a middle frame, and the supporting unit (2) is installed on the middle frame.

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