Vibration assembly and electronic equipment

Abstract

The invention provides a vibration assembly and electronic equipment. The vibration assembly comprises piezoelectric ceramics and an elastic sheet, the elastic sheet comprises a main body part and a bending part, and the main body part is connected with the piezoelectric ceramics; the bending part is bent towards the piezoelectric ceramic, or the bending part is bent towards a direction deviating from the piezoelectric ceramic; and the width size of the bending part is smaller than that of the main body part. The vibration quantity of the vibration assembly can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of piezoelectric ceramics, and more particularly, to a vibration assembly and an electronic device. BACKGROUND

[0002] In the prior art, the haptic feedback of an electronic device is usually achieved by using a vibration assembly, such as a rotor motor, a linear motor or a piezoelectric motor. However, the working frequency of the current vibration assembly is low, resulting in a small vibration amount of the vibration assembly.

[0003] Therefore, there is a need to provide a new technical solution to solve the above technical problems. SUMMARY

[0004] An object of the present application is to provide a new technical solution for a vibration assembly and an electronic device.

[0005] According to a first aspect of the present application, a vibration assembly is provided, wherein the vibration assembly comprises:

[0006] a piezoelectric ceramic;

[0007] a spring piece, the spring piece comprising a main body portion and a bent portion, the main body portion being connected to the piezoelectric ceramic; the bent portion being bent towards the piezoelectric ceramic or being bent away from the piezoelectric ceramic; the width dimension of the bent portion being smaller than the width dimension of the main body portion.

[0008] Optionally, the length dimension of the main body portion is 1-100 mm, the width dimension of the main body portion is 1-100 mm, and the thickness dimension of the main body portion is 0.1-1 mm.

[0009] Optionally, the length dimension of the piezoelectric ceramic is 1-100 mm, the width dimension of the piezoelectric ceramic is 1-100 mm, and the thickness dimension of the piezoelectric ceramic is 0.1-50 mm.

[0010] Optionally, the main body portion comprises a first main body portion and a second main body portion.

[0011] The vibration assembly further comprises a mass block, the mass block comprising a protruding portion, a first recessed portion and a second recessed portion, the protruding portion being disposed between the first recessed portion and the second recessed portion, the first recessed portion being connected to the first main body portion, and the second recessed portion being connected to the second main body portion.

[0012] Optionally, the bent portion comprises a first bent portion and a second bent portion.

[0013] The mass further comprises a first accommodating groove and a second accommodating groove, the first accommodating groove is connected with the first bending part, and the second accommodating groove is connected with the second bending part.

[0014] Optionally, the vibration assembly further comprises a shell and a cover plate, an accommodating cavity is formed between the shell and the cover plate, the piezoelectric ceramic and the elastic sheet are arranged in the accommodating cavity, the shell comprises a first notch and a second notch, the cover plate comprises a first protrusion and a second protrusion;

[0015] The end of the main part away from the bending part is further provided with a fixing part, the fixing part comprises a first fixing part and a second fixing part, the first fixing part is arranged between the first notch and the first protrusion, and the second fixing part is arranged between the second notch and the second protrusion.

[0016] Optionally, the width dimension of the fixing part is smaller than the width dimension of the main part.

[0017] Optionally, the vibration assembly further comprises an FPC, the FPC comprises a first connecting part and a second connecting part, the first connecting part is arranged in the accommodating cavity, and the first connecting part is connected with the side of the piezoelectric ceramic away from the main part; and the second connecting part is connected with an external circuit.

[0018] Optionally, the shell further comprises a third notch, the second connecting part passes through the third notch and extends out of the accommodating cavity.

[0019] According to a second aspect of the present application, an electronic device is provided, which comprises the vibration assembly according to any one of the first aspect.

[0020] The vibration assembly in the present application has a greater resonant frequency of the elastic sheet by arranging the width dimension of the bending part to be smaller than the width dimension of the main part, thereby improving the working frequency of the vibration assembly and making the vibration assembly have a higher vibration amount.

[0021] Other features of the present application and its advantages will become apparent from the following detailed description of exemplary embodiments of the present application with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0022] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present application and, together with the description, serve to explain the principles of the present application.

[0023] Figure 1 is an exploded view of the vibration assembly in one embodiment of the present application.

[0024] Figure 2 is a structural schematic view of the elastic sheet in one embodiment of the present application.

[0025] Figure 3 is a structural schematic diagram of a mass block in one embodiment of the present application.

[0026] Figure 4 is a structural schematic diagram of a vibration assembly in one embodiment of the present application.

[0027] Figure 5 is a structural schematic diagram of a cover plate in one embodiment of the present application.

[0028] Legend of reference signs:

[0029] 1, piezoelectric ceramic;

[0030] 2, elastic sheet; 201, main body part; 2011, first main body part; 2012, second main body part; 202, bending part; 2021, first bending part; 2022, second bending part; 203, fixed part; 2031, first fixed part; 2032, second fixed part;

[0031] 3, mass block; 301, protruding part; 3011, first protruding part; 3012, second protruding part; 302, first recessed part; 303, second recessed part; 304, first accommodating groove; 305, second accommodating groove;

[0032] 4, housing; 401, first notch; 402, second notch; 403, third notch;

[0033] 5, cover plate; 501, first protrusion; 502, second protrusion;

[0034] 6, FPC; 601, first connecting part; 602, second connecting part. DETAILED DESCRIPTION

[0035] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of the components and steps set forth in these embodiments, numerical expressions, and numerical values are not limiting to the scope of the present application unless specifically stated otherwise.

[0036] Embodiments of the present application will be described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below by reference to the accompanying drawings are exemplary and are for the purpose of explaining the present application only, and should not be understood as limiting the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without making creative efforts are within the scope of protection of the present application.

[0037] The terms "first", "second", etc. in the description and claims of the application can explicitly or implicitly include one or more of the features. In the description of the application, the meaning of "a plurality of" is two or more, unless otherwise specified. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means that the front and rear associated objects are in an "or" relationship.

[0038] In the description of the application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" 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 application and simplifying the description, and do not indicate or imply 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 limiting the application.

[0039] In the description of the application, it should be noted that unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; 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 communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0040] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0041] According to one embodiment of the application, a vibration assembly is provided, which comprises a piezoelectric ceramic 1 and a spring sheet 2, the spring sheet 2 comprises a main body part 201 and a bent part 202, the main body part 201 is connected with the piezoelectric ceramic 1; the bent part 202 is bent towards the piezoelectric ceramic 1, or the bent part 202 is bent in a direction away from the piezoelectric ceramic 1; the width dimension of the bent part 202 is smaller than the width dimension of the main body part 201.

[0042] Specifically, the vibration assembly in the embodiments of the present application comprises a piezoelectric ceramic 1, which has a converse piezoelectric effect and can generate a stretching and shrinking deformation after being electrified. For example, an external circuit can be connected to the piezoelectric ceramic 1, so that the external circuit can apply an electric signal such as a voltage or a current to the piezoelectric ceramic 1 to drive the piezoelectric ceramic 1 to generate a stretching and shrinking deformation. The piezoelectric ceramic 1 can be a single-layer piezoelectric ceramic 1 or a multi-layer piezoelectric ceramic 1. The single-layer piezoelectric ceramic 1 can be a piezoelectric material such as lead zirconate titanate, barium titanate, potassium-sodium niobate or aluminum nitride. The multi-layer piezoelectric ceramic 1 can be formed by alternately stacking piezoelectric ceramic 1 layers and electrode layers. The piezoelectric ceramic 1 layers can be a piezoelectric material such as lead zirconate titanate, barium titanate, potassium-sodium niobate or aluminum nitride. The electrode layers can be a conductive metal material such as Ag, Au, Pt or Pd, or an alloy material composed of one or more conductive metal materials.

[0043] When the piezoelectric ceramic 1 is the single-layer piezoelectric ceramic 1, the thickness of the single-layer piezoelectric ceramic 1 can be 10-2000 μm. When the piezoelectric ceramic 1 is the multi-layer piezoelectric ceramic 1, the thickness of the piezoelectric ceramic 1 layers can be 10-2000 μm, and the thickness of the electrode layers can be 0.1-10 μm.

[0044] Therefore, the embodiments of the present application can select piezoelectric ceramics 1 with different structures and thicknesses according to the vibration amount requirements of different vibration assemblies, so that the vibration assembly can achieve the maximum vibration amount in different working frequency ranges, thereby effectively improving the haptic feedback effect of the electronic device.

[0045] The vibration assembly further comprises an elastic sheet 2 connected to the piezoelectric ceramic 1. In this way, by applying a voltage to the piezoelectric ceramic 1, when the direction of the applied voltage is the same as the direction of the polarization voltage, the thickness of the piezoelectric ceramic 1 becomes thicker, and the length and width of the piezoelectric ceramic 1 become shorter, so the elastic sheet 2 will generate a bending deformation towards the piezoelectric ceramic 1. When the direction of the applied voltage is opposite to the direction of the polarization voltage, the thickness of the piezoelectric ceramic 1 becomes thinner, and the length and width of the piezoelectric ceramic 1 become longer, so the elastic sheet 2 will generate a bending deformation away from the piezoelectric ceramic 1. Therefore, by applying a continuously changing voltage to the piezoelectric ceramic 1, the elastic sheet 2 can generate a cyclic bending deformation, i.e. the elastic sheet 2 can generate a vibration under the driving of the stretching and shrinking deformation generated by the piezoelectric ceramic 1 after being electrified, and then the vibration can be transmitted to the shell of the vibration assembly to realize the vibration of the vibration assembly.

[0046] The elastic sheet 2 can be made of metal materials such as iron-nickel alloy, titanium alloy or stainless steel, or made of elastic materials such as engineering plastics. The elastic sheet 2 can be made of an integral structure or a split structure by punching, CNC (Computer Numerical Control), etching or injection molding and the like. The elastic sheet 2 and the piezoelectric ceramic 1 can be connected by hard contact connection such as bonding or welding.

[0047] As shown in Figure 1 The elastic sheet 2 includes a main body part 201 and a bending part 202. The main body part 201 is connected to the piezoelectric ceramic 1 to generate vibration under the driving of the piezoelectric ceramic 1. The bending part 202 is arranged at one end of the main body part 201 to be in a suspended state after the elastic sheet 2 is connected to the piezoelectric ceramic 1, and the width dimension of the bending part 202 is smaller than that of the main body part 201.

[0048] Therefore, by setting the width dimension of the bending part 202 and the main body part 201, the vibration effect of the elastic sheet 2 can be improved when the piezoelectric ceramic 1 drives the main body part 201 to generate vibration, so that the elastic sheet 2 has a larger resonant working frequency, that is, the vibration assembly has a larger working frequency range, effectively improving the vibration amount of the vibration assembly.

[0049] It should be noted that the elastic sheet 2 can be provided in multiple numbers. The multiple elastic sheets 2 can be arranged side by side along the X-axis direction, or the multiple elastic sheets 2 can be arranged side by side along the Y-axis direction. Therefore, due to the different arrangement modes of the multiple elastic sheets 2, the dimensions along the X-axis direction and the dimensions along the Y-axis direction will change, so as to clearly define the length dimension and the width dimension of the elastic sheet 2. When the multiple elastic sheets 2 are arranged side by side along the X-axis direction, the side of the elastic sheet 2 extending along the X-axis direction is the width direction, the side of the elastic sheet 2 extending along the Y-axis direction is the length direction, and the side of the elastic sheet 2 extending along the Z-axis direction is the thickness direction. As shown in Figure 1 When the multiple elastic sheets 2 are arranged side by side along the Y-axis direction, the side of the elastic sheet 2 extending along the X-axis direction is the length direction, the side of the elastic sheet 2 extending along the Y-axis direction is the width direction, and the side of the elastic sheet 2 extending along the Z-axis direction is the thickness direction.

[0050] Of course, in other embodiments, the length direction, the width direction and the thickness direction of the elastic sheet 2 can also be set to other directions, which can be selected by those skilled in the art according to actual needs, and the present application does not make specific limitations here.

[0051] In some embodiments, the vibration assembly has a first state in which the plurality of elastic sheets 2 are connected to each other and a second state in which the plurality of elastic sheets 2 are disconnected from each other.

[0052] Therefore, by switching the vibration assembly between the first state and the second state, i.e., by switching the plurality of elastic sheets 2 between being connected to each other and being disconnected from each other, the resonant operating frequency of the elastic sheet 2 is effectively expanded, and the vibration amount of the vibration assembly is further improved.

[0053] In one embodiment, the length dimension of the main body 201 is 1-100 mm, the width dimension of the main body 201 is 1-100 mm, and the thickness dimension of the main body 201 is 0.1-1 mm.

[0054] Specifically, as shown in Figure 1 and Figure 2 by changing the length dimension, width dimension, and thickness dimension of the main body 201, the resonant operating frequency of the elastic sheet 2 can be made larger, so that the vibration assembly has a larger operating frequency range, and the vibration amount of the vibration assembly is effectively improved.

[0055] In order to make the resonant operating frequency of the elastic sheet 2 larger, the length dimension of the main body 201 is preferably 1-100 mm, the width dimension is 1-100 mm, and the thickness dimension is 0.1-1 mm.

[0056] In addition, the resonant operating frequency of the elastic sheet 2 can be further expanded by changing the hardness and rigidity of the elastic sheet 2, so that the vibration assembly has a larger operating frequency range and a higher vibration amount.

[0057] In one embodiment, the length dimension of the piezoelectric ceramic 1 is 1-100 mm, the width dimension of the piezoelectric ceramic 1 is 1-100 mm, and the thickness dimension of the piezoelectric ceramic 1 is 0.1-50 mm.

[0058] Specifically, as shown in Figure 1 by changing the length dimension, width dimension, and thickness dimension of the piezoelectric ceramic 1, the resonant operating frequency of the elastic sheet 2 can be made larger, so that the vibration assembly has a larger operating frequency range, and the vibration amount of the vibration assembly is effectively improved.

[0059] In order to make the resonant operating frequency of the elastic sheet 2 larger, the length dimension of the piezoelectric ceramic 1 is preferably 1-100 mm, the width dimension is 1-100 mm, and the thickness dimension is 0.1-50 mm.

[0060] It should be noted that the piezoelectric ceramic 1 can be provided in multiple numbers, and the multiple piezoelectric ceramics 1 can be arranged side by side along the X-axis direction, or the multiple piezoelectric ceramics 1 can also be arranged side by side along the Y-axis direction. Thus, due to different arrangement modes of the multiple piezoelectric ceramics 1, the size along the X-axis direction and the size along the Y-axis direction of the piezoelectric ceramic 1 can change, so as to clearly define the length and width of the piezoelectric ceramic 1, when the multiple piezoelectric ceramics 1 are arranged side by side along the X-axis direction, the side of the piezoelectric ceramic 1 extending along the X-axis direction is the width direction, the side of the piezoelectric ceramic 1 extending along the Y-axis direction is the length direction, and the side of the piezoelectric ceramic 1 extending along the Z-axis direction is the thickness direction; and as shown in the piezoelectric ceramic 1, when the multiple piezoelectric ceramics 1 are arranged side by side along the Y-axis direction, the side of the piezoelectric ceramic 1 extending along the X-axis direction is the length direction, the side of the piezoelectric ceramic 1 extending along the Y-axis direction is the width direction, and the side of the piezoelectric ceramic 1 extending along the Z-axis direction is the thickness direction. Figure 1

[0061] Of course, in other embodiments, the length direction, width direction and thickness direction of the piezoelectric ceramic 1 can also be provided as other directions, which can be selected according to actual needs by those skilled in the art, and the present application does not make specific limitations here.

[0062] In one embodiment, the main body part 201 includes a first main body part 2011 and a second main body part 2012; the vibration assembly further includes a mass block 3, the mass block 3 includes a protruding part 301, a first recessed part 302 and a second recessed part 303, the protruding part 301 is arranged between the first recessed part 302 and the second recessed part 303, the first recessed part 302 is connected with the first main body part 2011, and the second recessed part 303 is connected with the second main body part 2012.

[0063] Specifically, as shown in the piezoelectric ceramic 1, the vibration assembly further includes a mass block 3, which is connected with the side of the elastic sheet 2 away from the piezoelectric ceramic 1. In this way, after the elastic sheet 2 is driven to vibrate by the expansion and contraction deformation of the piezoelectric ceramic 1 after being powered on, the vibration of the elastic sheet 2 can also drive the mass block 3 to vibrate, thereby further improving the vibration effect of the vibration assembly. Figure 1 The mass block 3 can be a high-density metal material such as tungsten-nickel alloy or tantalum alloy. The mass block 3 and the elastic sheet 2 can be connected in a hard contact mode such as bonding or welding.

[0064] Among them, as shown in the piezoelectric ceramic 1, the vibration assembly further includes a mass block 3, which is connected with the side of the elastic sheet 2 away from the piezoelectric ceramic 1. In this way, after the elastic sheet 2 is driven to vibrate by the expansion and contraction deformation of the piezoelectric ceramic 1 after being powered on, the vibration of the elastic sheet 2 can also drive the mass block 3 to vibrate, thereby further improving the vibration effect of the vibration assembly.

[0065] Figure 1 Figure 3 ​​​As shown in the figures, two elastic pieces 2 are provided in the embodiment of the present application, so that the main body part 201 comprises a first main body part 2011 and a second main body part 2012, so as to make the vibration effect of the mass block 3 better, the mass block 3 is further provided with a protruding part 301, a first recessed part 302 and a second recessed part 303, the protruding part 301 is arranged between the first recessed part 302 and the second recessed part 303 to separate the two elastic pieces 2, the first recessed part 302 is connected with the first main body part 2011, and the second recessed part 303 is connected with the second main body part 2012, so that the elastic pieces 2 can drive the mass block 3 to vibrate under the driving of the piezoelectric ceramic 1.

[0066] In addition, in order to make the vibration assembly have a larger working frequency range, the embodiment of the present application can also make the vibration assembly have a higher vibration amount by increasing the volume of the mass block 3.

[0067] In one embodiment, the bending part 202 comprises a first bending part 2021 and a second bending part 2022, and the mass block 3 further comprises a first accommodating groove 304 and a second accommodating groove 305, the first accommodating groove 304 is connected with the first bending part 2021, and the second accommodating groove 305 is connected with the second bending part 2022.

[0068] Specifically, as shown in the figures, in order to make the mass block 3 adapt to the elastic pieces 2, that is, to make the connection effect between the mass block 3 and the elastic pieces 2 better, the mass block 3 is further provided with a first accommodating groove 304 and a second accommodating groove 305, the first accommodating groove 304 is connected with the first bending part 2021, and the second accommodating groove 305 is connected with the second bending part 2022. Figure 1 and Figure 3 As shown in the figures, since the elastic pieces 2 are provided with two, the bending part 202 also comprises a first bending part 2021 and a second bending part 2022, so as to make the mass block 3 adapt to the elastic pieces 2, that is, to make the connection effect between the mass block 3 and the elastic pieces 2 better, the mass block 3 is further provided with a first accommodating groove 304 and a second accommodating groove 305, the first accommodating groove 304 is connected with the first bending part 2021, and the second accommodating groove 305 is connected with the second bending part 2022, so as to further improve the vibration effect of the mass block 3.

[0069] In addition, in order to make the elastic pieces 2 have a larger resonant working frequency, the embodiment of the present application can also make the vibration assembly have a higher vibration amount by increasing the length size, width size or bending angle of the bending part 202.

[0070] In some embodiments, since the width of the bending part 202 is smaller than the width of the main part 201, in order to make the elastic sheet 2 better fit the mass 3, the mass 3 is further provided with a first protrusion 3011 and a second protrusion 3012, the first protrusion 3011 abuts the joint between the first bending part 2021 and the first main part 2011, and the second protrusion 3012 abuts the joint between the second bending part 2022 and the second main part 2012. In this way, the mutual clamping of the elastic sheet 2 and the mass 3 effectively improves the reliability and stability of the connection between the elastic sheet 2 and the mass 3, and further guarantees the vibration effect of the mass 3.

[0071] In one embodiment, the vibration assembly further comprises a shell 4 and a cover plate 5, and a containing cavity is formed between the shell 4 and the cover plate 5, the piezoelectric ceramic 1 and the elastic sheet 2 are arranged in the containing cavity, the shell 4 comprises a first notch 401 and a second notch 402, the cover plate 5 comprises a first protrusion 501 and a second protrusion 502; the end of the main part 201 away from the bending part 202 is further provided with a fixing part 203, the fixing part 203 comprises a first fixing part 2031 and a second fixing part 2032, the first fixing part 2031 is arranged between the first notch 401 and the first protrusion 501, and the second fixing part 2032 is arranged between the second notch 402 and the second protrusion 502.

[0072] Specifically, as shown in Figure 1 and Figure 4 , the vibration assembly further comprises a shell 4 and a cover plate 5, and the shell 4 and the cover plate 5 jointly constitute the shell of the vibration assembly, so as to generate vibration under the driving of the elastic sheet 2 or the mass 3, thereby forming a haptic feedback mechanism of an electronic device. The shell 4 and the cover plate 5 can be metal materials such as iron-nickel alloy, titanium alloy and stainless steel, or can be elastic materials such as engineering plastics. The shell 4 and the cover plate 5 can be an integral structure or a split structure made by stamping, CNC (Computer Numerical Control), etching or injection molding. The shell 4 and the cover plate 5 can be connected together by bonding, welding or screwing. A containing cavity is formed between the shell 4 and the cover plate 5, and the containing cavity is used to accommodate the piezoelectric ceramic 1 and the elastic sheet 2, so as to protect the piezoelectric ceramic 1 and the elastic sheet 2, and avoid the influence of external impurities on the performance of the vibration assembly.

[0073] In addition, in order to better transmit the vibration generated by the elastic sheet 2 to the shell 4 and the cover plate 5, as shown in Figure 1 ,Figure 4 and Figure 5 As shown in FIG. 2, the end of the elastic sheet 2 away from the bending part 202 is further provided with a fixing part 203, which can be connected with the shell 4 and the cover plate 5, so as to effectively ensure the vibration effect of the vibration assembly.

[0074] In order to further improve the transmission effect of vibration and reduce the size of the vibration assembly, so that the vibration assembly can adapt to the miniaturization requirement of electronic equipment, the fixing part 203 is further provided with a first fixing part 2031 and a second fixing part 2032, the side of the shell 4 is further provided with a first notch 401 and a second notch 402, and the circumferential side of the cover plate 5 is further provided with a first protrusion 501 and a second protrusion 502.

[0075] Therefore, the first notch 401 accommodates the first fixing part 2031 and the first protrusion 501, and the first notch 401 is connected with the first protrusion 501 through the first fixing part 2031; and the second notch 402 accommodates the second fixing part 2032 and the second protrusion 502, and the second notch 402 is connected with the second protrusion 502 through the second fixing part 2032, which not only improves the connection effect between the elastic sheet 2, the shell 4 and the cover plate 5, but also effectively reduces the thickness size of the vibration assembly, so that the vibration assembly can better adapt to the miniaturization requirement of electronic equipment.

[0076] In addition, in order to ensure the protection effect of the shell 4 and the cover plate 5 on the piezoelectric ceramic 1 and the elastic sheet 2, the length size of the shell 4 is 1-100mm, the width size is 1-100mm, and the thickness size is 0.1-50mm; the length size of the cover plate 5 is 1-100mm, the width size is 1-100mm, and the thickness size is 0.1-1mm.

[0077] In one embodiment, the width size of the fixing part 203 is smaller than the width size of the main part 201.

[0078] Specifically, as shown in FIG. 2, Figure 1 and Figure 2As shown, the width size of the fixing portion 203 is smaller than the width size of the main body portion 201, which can reduce the machining size of the notch and the protrusion, so that the processing cost of the vibration assembly is lower; on the other hand, the fixing portion 203 can be connected with the shell 4 and the cover plate 5, so that the elastic sheet 2 forms a cantilever structure with one end fixed and one end suspended, and the bending portion 202 can also expand the resonance frequency of the elastic sheet 2, thereby further improving the vibration amount of the vibration assembly.

[0079] In one embodiment, the vibration assembly further comprises an FPC 6 (Flexible Printed Circuit), the FPC 6 comprises a first connecting portion 601 and a second connecting portion 602, the first connecting portion 601 is arranged in the accommodating cavity, and the first connecting portion 601 is connected with the side of the piezoelectric ceramic 1 away from the main body portion 201; the second connecting portion 602 is connected with an external circuit.

[0080] Specifically, as shown in Figure 1 and Figure 4 The vibration assembly of the embodiment of the present application further comprises an FPC 6, which can connect the piezoelectric ceramic 1 and an external circuit, so that the external circuit can drive the piezoelectric ceramic 1 to produce expansion and contraction deformation through the FPC 6. The piezoelectric ceramic 1 can be provided with a lead-out electrode (not shown in the figure) for connecting the internal electrode layer and the external circuit, and the lead-out electrode can be connected with the FPC 6 through a welding process, or the lead-out electrode can also be connected with the FPC 6 through an ACF process.

[0081] The FPC 6 comprises a first connecting portion 601 and a second connecting portion 602, the first connecting portion 601 is connected with the side of the piezoelectric ceramic 1 away from the main body portion 201, and the second connecting portion 602 is connected with an external circuit, so as to realize the communication between the external circuit and the piezoelectric ceramic 1.

[0082] In one embodiment, the shell 4 further comprises a third notch 403, and the second connecting portion 602 extends out of the accommodating cavity through the third notch 403.

[0083] Specifically, as shown in Figure 1 and Figure 4 The shell 4 of the embodiment of the present application further comprises a third notch 403, and the second connecting portion 602 of the FPC 6 can extend out of the accommodating cavity through the third notch 403 and be connected with an external circuit, which effectively improves the connection effect between the piezoelectric ceramic 1 and the external circuit.

[0084] According to another embodiment of the present application, an electronic device is provided, which includes the vibration assembly described in the present application.

[0085] Specifically, the electronic device described in the embodiments of the present application can be any one of a mobile phone, a tablet computer, a personal digital assistant, a television, a smart wearable product, a virtual reality terminal device, an augmented reality terminal device, a charging household small appliance (such as a soybean milk machine or a sweeping robot), a drone, a radar, an aerospace device, and a vehicle-mounted device.

[0086] In the above embodiments, the focus is on the differences between the various embodiments, and the optimization features that are different between the various embodiments can be combined to form a more optimal embodiment as long as they are not contradictory. In view of the brevity of the writing, this will not be repeated here.

[0087] Although some specific embodiments of the present application have been described in detail through examples, those skilled in the art should understand that the above examples are only for illustration and are not intended to limit the scope of the present application. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A vibration assembly, characterized by, The vibration assembly comprises: a piezoelectric ceramic (1); a spring sheet (2), the spring sheet (2) comprises a main body part (201) and a bent part (202), the main body part (201) is connected with the piezoelectric ceramic (1); the bent part (202) is bent towards the piezoelectric ceramic (1), or the bent part (202) is bent towards a direction away from the piezoelectric ceramic (1); the width dimension of the bent part (202) is smaller than the width dimension of the main body part (201).

2. The vibration assembly of claim 1, wherein, The length dimension of the main body part (201) is 1-100 mm, the width dimension of the main body part (201) is 1-100 mm, and the thickness dimension of the main body part (201) is 0.1-1 mm.

3. The vibration assembly of claim 1, wherein, The length dimension of the piezoelectric ceramic (1) is 1-100 mm, the width dimension of the piezoelectric ceramic (1) is 1-100 mm, and the thickness dimension of the piezoelectric ceramic (1) is 0.1-50 mm.

4. The vibration assembly of claim 1, wherein, The main body part (201) comprises a first main body part (2011) and a second main body part (2012); The vibration assembly further comprises a mass block (3), the mass block (3) comprises a convex part (301), a first recessed part (302) and a second recessed part (303), the convex part (301) is arranged between the first recessed part (302) and the second recessed part (303), the first recessed part (302) is connected with the first main body part (2011), and the second recessed part (303) is connected with the second main body part (2012).

5. The vibration assembly of claim 4, wherein, The bent part (202) comprises a first bent part (2021) and a second bent part (2022); The mass block (3) further comprises a first accommodating groove (304) and a second accommodating groove (305), the first accommodating groove (304) is connected with the first bent part (2021), and the second accommodating groove (305) is connected with the second bent part (2022).

6. The vibration assembly of claim 1, wherein, The vibration assembly further comprises a shell (4) and a cover plate (5), an accommodating cavity is formed between the shell (4) and the cover plate (5), the piezoelectric ceramic (1) and the spring sheet (2) are arranged in the accommodating cavity, the shell (4) comprises a first notch (401) and a second notch (402), and the cover plate (5) comprises a first protrusion (501) and a second protrusion (502). An end of the main body part (201) away from the bent part (202) is further provided with a fixing part (203), the fixing part (203) comprises a first fixing part (2031) and a second fixing part (2032), the first fixing part (2031) is arranged between the first notch (401) and the first protrusion (501), and the second fixing part (2032) is arranged between the second notch (402) and the second protrusion (502).

7. The vibration assembly of claim 6, wherein, The width dimension of the fixing part (203) is smaller than the width dimension of the main body part (201).

8. The vibration assembly of claim 6, wherein, The vibration assembly further comprises an FPC (6), the FPC (6) comprising a first connecting part (601) and a second connecting part (602), the first connecting part (601) being arranged in the accommodating cavity, and the first connecting part (601) being connected with the side of the piezoelectric ceramic (1) away from the main body part (201); the second connecting part (602) being connected with an external circuit.

9. The vibration assembly of claim 8, wherein, The shell (4) further comprises a third gap (403), the second connecting part (602) extending to outside of the accommodating cavity through the third gap (403).

10. An electronic device, comprising: The vibration assembly comprises the vibration assembly according to any one of claims 1-9.

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