WO2021185224A1 - Speaker and electronic device - Google Patents

Abstract

Disclosed in the present application are a speaker and an electronic device. The speaker comprises a diaphragm, a vibration source, and a frame. The diaphragm comprises a diaphragm body and multiple add-ons; the diaphragm body comprises a middle part, a connecting part, and an edge part; the middle part of the diaphragm body is located on an inner side of the edge part of the diaphragm body; the connecting part of the diaphragm body is connected between the middle part of the diaphragm body and the edge part of the diaphragm body; the vibration source is fixed to the middle part of the diaphragm body; the frame is fixed to the edge part of the diaphragm body; the multiple add-ons are fixed to the connecting part of the diaphragm body and are disposed surrounding the middle part of the diaphragm body; and the material of the multiple add-ons is different from the material of the diaphragm body. The sound quality of the speaker is relatively good.

Description

Speakers and electronic equipment

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office, the application number is 202010196788.3, and the application name is "speakers and electronic equipment" on March 19, 2020, the entire content of which is incorporated into this application by reference.

Technical field

This application relates to the field of audio technology, and in particular to a speaker and electronic equipment.

Background technique

Currently, speakers are widely used in various electronic devices as electro-acoustic transducers. Vibration speakers usually include a diaphragm and a vibration source fixed to the diaphragm. The vibration source drives the diaphragm to vibrate to form outwardly propagating sound. The sound wave emitted by the speaker usually contains low-frequency energy, intermediate-frequency energy and high-frequency energy, but due to the intrinsic characteristics of the vibration source, it is easy to have obvious energy shortage in some frequency bands, resulting in poor sound quality of the speaker.

Summary of the invention

The purpose of this application is to provide a speaker and electronic device that optimizes the sound effect.

In the first aspect, the present application provides a speaker including a diaphragm, a vibration source, and a frame. The diaphragm includes a diaphragm body and a number of additional components. The diaphragm body includes a middle part, a connecting part and an edge part. The middle part of the diaphragm body is located inside the edge of the diaphragm body, and the connecting part of the diaphragm body is connected to the diaphragm body. Between the middle part of the diaphragm and the edge of the diaphragm body, the vibration source is fixed to the middle of the diaphragm body, the frame is fixed to the edge of the diaphragm body, and a number of additional pieces are fixed to the connecting part of the diaphragm body and surround the diaphragm body. The material of the multiple attachments is different from the material of the diaphragm body.

In this application, the vibration source of the speaker regularly reciprocates up and down under the control of the audio input signal. The initial sound wave containing multiple frequency bands propagates from the middle of the diaphragm body along the diaphragm body. When the initial sound wave encounters When it reaches the part of the diaphragm that includes additional components (that is, the sound wave adjustment part of the diaphragm), a local resonance response is formed to generate a sound wave of a new frequency band (that is, a new sound wave). The new sound wave can be coupled with the initial sound wave to form an adjusted Sound waves continue to spread out and make sounds. That is, the speaker can design the sound wave adjustment part of the diaphragm, by changing the properties (including material, shape, position, number, etc.) of the additional parts and the properties (such as shape) of the part of the diaphragm body corresponding to the additional parts, In order to adjust the resonance and scattering area on the diaphragm, the new vibration source and the new sound wave are purposefully formed, and then the adjusted sound wave is formed through the coupling of the new sound wave and the initial sound wave, so that the adjusted sound wave can be corrected and improved The lack of initial sound waves (for example, it can increase the energy of certain frequency bands and weaken the energy of certain frequency bands) to achieve the purpose of optimizing the sound, making the sound effect of the speaker better.

Among them, since the sound wave adjustment part of the diaphragm includes an additional part and a part of the diaphragm body, the material of the additional part and the diaphragm body is different, so the properties of the sound wave adjustment part are different from those of other parts of the diaphragm, based on the Bragg radiation effect and the local Localized resonance phenomenon, the sound wave adjustment part can form a new vibration source driven by the initial sound wave.

In addition, the speaker optimizes the sound by reconstructing the structure and composition of the diaphragm, that is, optimizing the sound on the propagation path of the initial sound wave, so as to solve the problem of unsatisfactory frequency response curve of traditional speakers due to the inherent characteristics of the vibration source. , And the difficulty of realization is low, and the applicability is high.

In addition, the number of additional components is multiple to form multiple sound wave adjustment parts on the diaphragm, and the multiple sound wave adjustment parts can form new sound waves with sufficient energy, so that the initial sound waves can be fully adjusted by coupling. , In order to form a more ideal adjusted sound wave, so that the sound effect of the speaker is better.

In a possible implementation manner, the vibration source and the multiple attachments are fixed on the same side of the diaphragm body. Or, the diaphragm and a plurality of attachments are fixed on different sides of the diaphragm body.

In this application, the multiple acoustic wave adjustment parts corresponding to the multiple attachments can have the same attribute or different attributes. To increase the adjustment of the sound wave to the initial sound wave, the loudspeaker can adjust the new sound wave purposefully through the design of multiple sound wave adjustment parts, so as to better correct and perfect the initial sound wave through the new sound wave to obtain a good adjustment. The subsequent sound waves make the sound quality better.

In the present application, the speaker can adjust the properties of the sound wave adjusting part by adjusting the properties of the additional parts, and/or adjusting the positional relationship of multiple additional parts, and/or adjusting the structure of the sound wave adjusting part.

In a possible implementation manner, the plurality of additional components include a first additional component, and the first additional component includes a fixed surface, and the fixed surface is fixed to the surface of the diaphragm body in full contact. At this time, the diaphragm body is not provided with a groove structure or a hole structure under the first additional component. The structure of the diaphragm body is complete and the processing is simple, which is beneficial to improve the manufacturing accuracy of the diaphragm and the product yield.

In a possible implementation manner, the diaphragm body has a groove or a through hole, the plurality of additional components include a first additional component, the first additional component includes a fixing surface, and the fixing surface is partially contacted and fixed to the surface of the diaphragm body, and Cover grooves or through holes.

In this implementation, the arrangement of the groove or the through hole can change the properties of the first sound wave adjustment part, so the first sound wave adjustment part can adjust the properties by adjusting the material, shape, position and other factors of the first attachment. The properties can also be adjusted by adjusting the depth of the groove or the through hole, the shape of the cross-section (perpendicular to the depth), the cross-sectional area, etc. Therefore, the adjustment method of the first sound wave adjustment part is more flexible, which can reduce the difficulty of speaker design and also Make the speakers have better sound quality.

In a possible implementation manner, a single first attachment part covers a groove or a through hole. Alternatively, a single first attachment member covers a plurality of grooves or through holes spaced apart from each other. When a single attachment covers multiple grooves or through holes, the speaker can be adjusted by adjusting the positional relationship between the multiple grooves or through holes, the depth of a single groove or through hole, the cross-sectional (perpendicular to the depth) shape, the cross-sectional area, etc. Factors to adjust the properties of the first sound wave adjustment part of the diaphragm.

In a possible implementation manner, the diaphragm body has a groove or a through hole, the plurality of additional parts include a first additional part, and the first additional part is filled in the groove or the through hole. In this implementation, since the first attachment is filled in the groove or through hole of the diaphragm body, the outer surface of the diaphragm is relatively flat and has better continuity, which is beneficial to improve the sound quality of the speaker. In addition, the structure of the groove or the through hole is designed according to the structure of the first additional component, and the first acoustic wave adjusting part can realize property adjustment by adjusting the material, shape, position and other factors of the first additional component.

In a possible implementation manner, a plurality of additional components are arranged in a circle. The newly added sound waves formed by the plurality of sound wave adjusting parts corresponding to the plurality of attachments can be more evenly coupled with the outwardly diverging initial sound waves, so that the quality of the adjusted sound waves is better.

In a possible implementation manner, a plurality of additional components are arranged in multiple circles, and each circle of additional components is arranged around the middle of the diaphragm body. The speaker is equipped with multi-turn additional parts to increase the number of additional parts, that is, increase the number of new vibration sources, so that the newly added sound waves can fully adjust the initial sound waves and obtain a more ideal adjusted sound wave. The speaker can have a better Sound effects.

In a possible implementation manner, some of the multiple attachments are connected to each other, and some of the attachments are separated from each other, so that the multiple attachments form a patterned structure. The patterned accessory structure and the diaphragm body form a patterned sound wave adjustment part. The properties of the patterned sound wave adjustment part are different from the properties of the sound wave adjustment part formed by a single attachment and the diaphragm body to realize the properties of the sound wave adjustment part. adjust.

In a possible implementation manner, the multiple attachments include a first attachment and a second attachment, and the second attachment and the first attachment have different attributes. At this time, a first acoustic wave adjusting part including a first additional part and a second acoustic wave adjusting part including a second additional part are formed on the diaphragm. The second acoustic wave adjusting part and the first acoustic wave adjusting part have different properties, and the second The new vibration source corresponding to the sound wave adjustment part and the new vibration source corresponding to the first sound wave adjustment part can form new sound waves of different frequencies, thereby jointly adjusting the initial sound waves, the adjustment effect is better, and the adjusted sound waves have better Sound effects, the sound quality of the speakers is better.

In a possible implementation manner, the material of the first additional part is different from the material of the second additional part; and/or the shape of the first additional part is different from the shape of the second additional part; and/or the diaphragm body is formed Grooves or through holes, and the first additional piece and the second additional piece respectively cover grooves or through holes of different sizes. The loudspeaker can change the properties of the sound wave adjusting part by changing one or more of the material and shape of the attachment, and the shape of the corresponding part of the diaphragm body.

In a possible implementation, the vibration source is a piezoelectric sheet, a magnetostrictive element, or an electric exciter. In this application, the vibration source is used to provide a driving force for driving the diaphragm to reciprocate up and down. Under the condition that this requirement is met, the vibration source can also have more implementation modes and structures.

In a second aspect, the present application also provides an electronic device, including a housing and the speaker of any one of the foregoing, and the speaker is installed inside the housing. The speaker of the electronic device has better sound quality, and the user experience is better.

Description of the drawings

FIG. 1 is a schematic diagram of the structure of an electronic device provided by the present application in some embodiments;

FIG. 2 is a schematic diagram of the structure of the loudspeaker provided by the present application in some embodiments;

Fig. 3 is a schematic structural diagram of the loudspeaker shown in Fig. 2 taken along A-A in some embodiments;

4 is a schematic structural diagram of the structure at B of the diaphragm of the loudspeaker shown in FIG. 2 in a working state;

Figure 5 is a schematic diagram of the structure shown in Figure 4;

Fig. 6 is a schematic diagram of the structure of the loudspeaker shown in Fig. 2 taken along A-A in other embodiments;

Fig. 7 is a schematic diagram of the structure of the loudspeaker shown in Fig. 2 taken along A-A in still other embodiments;

Fig. 8 is a schematic diagram of the structure of the loudspeaker shown in Fig. 2 taken along A-A in still other embodiments;

FIG. 9 is a schematic diagram of the structure of the loudspeaker provided by the present application in other embodiments;

FIG. 10 is a schematic diagram of the structure of the loudspeaker provided by the present application in still other embodiments;

FIG. 11 is a schematic diagram of the structure of the loudspeaker provided by the present application in still other embodiments;

Fig. 12 is a frequency response curve diagram of a conventional loudspeaker whose vibration source is a rectangular magnetostrictor;

Fig. 13 is a frequency response curve diagram of the loudspeaker shown in Fig. 11;

FIG. 14 is a schematic diagram of the structure of the loudspeaker provided by the present application in still other embodiments;

Fig. 15 is a schematic diagram of the structure of the loudspeaker shown in Fig. 14 cut along C-C;

16 is a schematic diagram of the structure of the diaphragm body of the diaphragm shown in FIG. 14;

Figure 17 is a frequency response curve diagram of a traditional speaker whose vibration source is a piezoelectric sheet;

Fig. 18 is a frequency response curve diagram of the loudspeaker shown in Fig. 14;

FIG. 19 is a schematic diagram of the structure of the loudspeaker provided by the present application in still other embodiments;

FIG. 20 is a schematic diagram of the structure of the loudspeaker provided by the present application in some other embodiments;

Fig. 21 is a frequency response curve diagram of a traditional speaker whose vibration source is a piezoelectric sheet;

Fig. 22 is a frequency response curve diagram of the loudspeaker shown in Fig. 20.

Detailed ways

The embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

In the embodiment of the present application, the speaker is based on the material level reconstruction technology to perfect the vibration mode, so that the frequency response curve is energy-balanced in the full frequency range, so as to compensate for the lack of energy at individual frequency points, and reduce the excessive energy, thereby avoiding sound Too sharp or dull, optimize the sound effect to achieve a better sound effect.

Please refer to FIG. 1, which is a schematic structural diagram of an electronic device 100 provided by the present application in some embodiments. The electronic device 100 may be an electronic product with a sound playback function, such as a mobile phone, a tablet computer, or a notebook computer. In the embodiment shown in FIG. 1, the electronic device 100 is a mobile phone as an example for description.

The electronic device 100 includes a housing 101, a display module 102, a loudspeaker (also called a speaker) 103, and a non- loudspeaker (also called a receiver) 104. The housing 101 includes a frame 1011 and a back cover 1012, and the frame 1011 is connected to the periphery of the back cover 1012. The frame 1011 and the back cover 1012 may be an integral structure, or may be assembled to form an integral structure. The housing 101 is provided with a speaker hole 1013. The number of speaker holes 1013 may be one or more. Exemplarily, the number of the speaker holes 1013 is multiple, and the multiple speaker holes 1013 are provided on the frame 1011. The speaker hole 1013 communicates the inside of the electronic device 100 with the outside of the electronic device 100.

The display module 102 includes a cover 1021 and a display panel 1022. The cover 1021 is fixed to the housing 101, for example, the cover 1021 is fixed to the side of the frame 1011 away from the rear cover 1012. The display panel 1022 is fixed to the inner surface of the cover plate 1021 facing the rear cover 1012. The cover 1021 is used to protect the display panel 1022, the display panel 1022 is used to display images, and the display panel 1022 can also integrate a touch function. The cover plate 1021 is provided with a receiving hole 1023. Exemplarily, the receiving hole 1023 is a through hole penetrating the cover plate 1021. The projection of the display panel 1022 on the cover 1021 and the receiving hole 1023 are staggered.

Both the external speaker 103 and the non-external speaker 104 are located inside the frame 1011 and between the display module 102 and the back cover 1012. The sound emitted by the external loudspeaker 103 can be transmitted to the outside of the electronic device 100 through the speaker hole 1013 to realize the sound playback function of the electronic device 100. The sound emitted by the non-external loudspeaker 104 is transmitted to the outside of the electronic device 100 through the speech hole 1023 to realize the sound playback function of the electronic device 100. The loudspeaker 103 and/or the non-exhausted loudspeaker 104 may adopt the loudspeakers described in the subsequent embodiments. In this application, "A and/or B" includes the three cases of "A", "B" and "A and B".

In some embodiments, the electronic device 100 may further include a circuit board and multiple devices fixed on the circuit board. Multiple devices include a processor and a memory, a memory coupled processor, a display module 102, an external speaker 103, and a non-external speaker 104 are all coupled to the processor.

Please refer to FIGS. 2 and 3 together. FIG. 2 is a schematic structural diagram of the speaker 10 provided by the present application in some embodiments, and FIG. 3 is a schematic structural diagram of the speaker 10 shown in FIG. 2 taken along AA in some embodiments. .

The speaker 10 includes a diaphragm 1, a vibration source 2 and a frame 3. The diaphragm 1 includes a diaphragm body 11 and a plurality of additional parts 12. The diaphragm body 11 includes a middle portion 111, a connecting portion 112, and an edge portion 113. The middle portion 111 of the diaphragm body 11 is located inside the edge portion 113 of the diaphragm body 11, and the connecting portion 112 of the diaphragm body 11 is connected to the diaphragm body 11 Between the middle portion 111 and the edge portion 113 of the diaphragm body 11. The vibration source 2 is fixed to the middle portion 111 of the diaphragm body 11. The frame 3 is fixed to the edge portion 113 of the diaphragm body 11. Exemplarily, the frame 3 may include a first frame 31 and a second frame 32, the first frame 31 is fixed to one side of the diaphragm body 11, and the second frame 32 is fixed to the other side of the diaphragm body 11. . A plurality of attachments 12 are fixed to the connecting portion 112 of the diaphragm body 11 and arranged around the middle portion 111 of the diaphragm body 11. The material of the plurality of attachments 12 is different from the material of the diaphragm body 11.

Please continue to refer to FIGS. 4 and 5. FIG. 4 is a schematic structural diagram of the structure at B of the diaphragm 1 of the speaker 10 shown in FIG. 2 in a working state, and FIG. 5 is a schematic diagram of the structure shown in FIG. 4. Among them, in FIG. 4, part of the diaphragm 1 is simplified into multiple mass points (corresponding to squares), including a first mass point 1a corresponding to a square with unfilled triangles and a second mass point 1b corresponding to a square filled with triangles. , The first mass point 1a includes the diaphragm body 11 but does not include the additional component 12, and the second mass point 1b includes the diaphragm body 11 and the additional component 12. In Figure 5, the diaphragm 1 is simplified into a "mass-elastic beam" structure for principle analysis. The mass points (1a, 1b) are connected by springs. The connection method is simplified as a spring connection.

In this embodiment, the speaker 10 vibrates through the vibration source 2 to cause the diaphragm 1 to deform or move, and then all molecules/particles in the diaphragm 1 generate forced vibrations to drive other surrounding particles to vibrate together to generate mechanical waves/sound waves, and finally mechanical waves /Sound waves propagate through the surrounding air and produce sound. The vibration source 2 generates a mechanical wave/sonic wave with an initial frequency of f1, and the mechanical wave/sonic wave with a frequency of f1 is transmitted at the first mass point 1a. Due to the different properties of the second mass point 1b and the first mass point 1a, the second mass point 1b is stimulated and pushed by the mechanical wave/sound wave with frequency f1 to form a new vibration source (hereinafter referred to as the new vibration source). The area can generate a new vibration mode or vibration mode, and form a new mechanical wave/sonic wave with a frequency of f2 (hereinafter referred to as the new acoustic wave). Subsequently, the mechanical wave/sound wave with frequency f1 and the mechanical wave/sound wave with frequency f2 are coupled to each other to form an adjusted mechanical wave/sound wave with frequency f3, and continue to propagate outward along the diaphragm 1, and the speaker 10 emits sound. It is understandable that based on the Bragg scattering effect and the localized resonance phenomenon, when the properties of the second mass point 1b are different from those of the first mass point 1a and the material properties of the diaphragm 1 change, it will be generated at the second mass point 1b. The new mechanical wave/sonic wave with frequency f2.

In other words, the vibration source 2 of the speaker 10 regularly reciprocates up and down under the control of the audio input signal, and the initial sound waves containing multiple frequency bands propagate outward from the middle 111 of the diaphragm body 11 along the diaphragm body 11. When the sound wave encounters the part of the diaphragm 1 (hereinafter referred to as the sound wave adjustment part of the diaphragm 1) including the additional part 12, a local resonance response is formed to generate a sound wave of a new frequency band (hereinafter referred to as the new sound wave), and the new sound wave can Coupled with the initial sound wave to form an adjusted sound wave and continue to spread and emit sound. That is, the speaker 10 can design the sound wave adjustment part of the diaphragm 1, by changing the properties (including material, shape, position, number, etc.) of the additional part 12 and the properties of the part of the diaphragm body 11 corresponding to the additional part 12. (E.g. shape) to adjust the resonance and scattering area on the diaphragm 1, purposefully form a new vibration source and a new sound wave, and then through the coupling of the new sound wave and the initial sound wave to form an adjusted sound wave, so that the adjusted sound wave The sound waves can correct and improve the deficiencies of the initial sound waves (for example, it can increase the energy of certain frequency bands and weaken the energy of certain frequency bands), achieve the purpose of optimizing the sound, and make the sound effect of the speaker 10 better.

In addition, the number of attachments 12 is multiple to form multiple acoustic wave adjusting parts on the diaphragm 1. The multiple acoustic wave adjusting parts can form new acoustic waves with sufficient energy, so that the initial acoustic waves can be fully affected by coupling. The adjustment function is to form a more ideal adjusted sound wave, so that the sound effect of the speaker 10 is better.

The speaker 10 of this embodiment optimizes the sound by reconstructing the structure and composition of the diaphragm 1, that is, optimizing the sound on the propagation path of the initial sound wave, so as to solve the frequency of the traditional speaker 10 due to the inherent characteristics of the vibration source 2. The response curve is not ideal, and the difficulty of implementation is low, and the applicability is high.

It is understandable that traditional vibrating and sounding speakers will produce vibrations when they work, which will drive the surrounding air to emit sound and spread to the surrounding 360 degrees, causing a certain degree of sound leakage, which will affect the privacy of the call, and will also affect the privacy of the call. People around cause noise disturbance. In order to solve the problem of sound leakage, in current applications, it is usually to reduce the sound leakage by reducing the vibration energy and the volume. However, the method of turning down the volume will make the voice heard by the user become smaller, and even the information of the other party cannot be heard clearly.

The speaker 10 of this embodiment can adopt the material level reconstruction technology without reducing the vibration energy/volume. Through the specific distribution and design of the sound wave adjustment part of the diaphragm 1, the sound wave propagation in a certain frequency band can be weakened. Make the sound wave of another frequency propagate in a specific direction and a specific area, thereby increasing the directionality/directivity of the final sound wave, reducing sound leakage, and improving user experience.

It is understandable that, in the embodiments of the present application, the technique of changing the mass point properties of the local area of the diaphragm 1 (that is, forming the sound wave adjustment part of the diaphragm 1) to achieve sound wave adjustment can be called material hierarchy reconstruction (material hierarchy reconstruction). reconstruction, HR) technology. Material level reconstruction technology is to destroy the old composition relationship between the original systems or the original forms within a certain system, and re-proportioning and constructing the material molecules, in order to process and control the sound wave in an unconventional way.

The adjustment of the initial sound wave is the adjustment of the frequency response (FR) curve of the initial sound wave. In the frequency response curve, “frequency” refers to “frequency”, which is the same as “tone” in sound performance; Can respond. When a lot of "frequency" response values are connected together, it becomes a "curve" with peaks and valleys. This kind of curve is called the frequency response curve, referred to as the frequency response curve.

Among them, the vibration source 2 can also be referred to as a seismic source, a vibrator, or an exciton. In some embodiments, the vibration source 2 may be a piezoelectric sheet, a magnetostrictive element, or an electric exciter. In the embodiment of the present application, the vibration source 2 is used to provide a driving force for driving the diaphragm 1 to reciprocate up and down. Under the condition that this requirement is met, the vibration source 2 can also have more implementation modes and structures. The embodiment of the present application China does not strictly limit this. The diaphragm 1 can also be referred to as a flat plate, a thin plate, a vibration plate, and a substrate.

It can be understood that, in the present application, the vibration source 2 and the attachment 12 can be fixed on the same side of the diaphragm body 11 or can be fixed on different sides of the diaphragm body 11. Wherein, the case where the vibration source 2 and the additional member 12 are fixed on different sides of the diaphragm body 11 includes: the vibration source 2 is fixed on one side of the diaphragm body 11, and all the additional members 12 are fixed on the other side of the diaphragm body 11; Alternatively, the vibration source 2 and part of the additional component 12 are fixed on one side of the diaphragm body 11, and the remaining part of the additional component 12 is fixed on the other side of the diaphragm body 11. In the embodiment of the present application, the vibration source 2 and the additional member 12 are fixed on the same side of the diaphragm body 11 as an example for specific description. At this time, a plurality of additional members 12 are arranged around the vibration source 2.

In some embodiments, the shape of the frame 3 may be multiple. For example, as shown in FIG. 2, the shape of the frame 3 is a rectangular frame. The rectangular frame may be a square frame or a rectangular frame. In some other embodiments, the shape of the frame 3 may also be a circular frame, an oval frame, a hexagonal frame, or other special-shaped frames. The shape of the frame 3 can be designed according to the requirements of the speaker 10, and the specific shape of the frame 3 is not strictly limited in this application.

In some embodiments, the diaphragm body 11 may be a thin film (with a thickness of less than 100 microns), a sheet (with a thickness in the range of 100 microns to 2 millimeters), or a plate (with a thickness of greater than 2 millimeters). The diaphragm body 11 can have various shapes. For example, as shown in FIG. 2, the shape of the diaphragm body 11 is rectangular. The rectangle can be square or rectangular. In some other embodiments, the shape of the diaphragm body 11 may also be a circle, an ellipse, a hexagon or other special shapes. The size of the outer contour of the diaphragm body 11 may be greater than or equal to the size of the frame 3, which is not limited in this application. The shape of the diaphragm body 11 can be designed according to the shape of the frame 3, or it can be different from the shape of the frame 3.

The material of the diaphragm body 11 can have various implementation schemes. For example, the diaphragm body 11 can be made of metal and its alloy materials, polymers and their composite materials, animal, plant, or polymer fiber materials, inorganic non-metallic materials, composite sandwich panels or foam panels, etc. This is not the case in the embodiments of this application. Be strict.

In the embodiment of the present application, the multiple acoustic wave adjusting parts corresponding to the multiple attachments 12 may have the same attribute or different attributes, and the attributes of each acoustic wave adjusting part affect the frequency of the vibration source 2 formed by it. This further affects the adjustment of the new sound wave to the initial sound wave. The speaker 10 can adjust the new sound wave purposefully by designing multiple sound wave adjustment parts, so as to better correct and perfect the initial sound wave through the new sound wave. Get a good, adjusted sound wave, making the sound quality better.

In some embodiments, the speaker 10 can adjust the properties of the sound wave adjusting part by adjusting the properties of the additional part 12, and/or adjusting the positional relationship of the plurality of additional parts 12, and/or adjusting the structure of the sound wave adjusting part.

Among them, the attributes of the attachment 12 include shape, material, and so on. Exemplarily, the shape of the attachment 12 may have various implementations, for example, a column shape, a rod shape (also referred to as a beam shape), a layer shape, a spherical shape, or other irregular shapes. The column-shaped attachment 12 extends in a direction perpendicular to the diaphragm body 11, and its cross-sectional shape can be square, rectangular, rhombus, triangle, circle, ellipse, or other shapes. The rod-shaped attachment 12 extends in a direction parallel to the diaphragm body 11, and its cross-sectional shape can be square, rectangular, diamond, triangle, circle, ellipse, or other shapes. The layered attachment 12 has a small size in the direction perpendicular to the diaphragm body 11 and a larger size in the direction parallel to the diaphragm body 11. The layered shape may include, but is not limited to, a film shape (thickness less than 100 microns) , Flake (thickness in the range of 100 microns to 2 mm) or plate (thickness greater than 2 mm).

Exemplarily, the material of the additional member 12 can have various embodiments, and the additional member 12 can be an isotropic material, an anisotropic material, a rigid unit and its composite material, or a flexible unit and its composite material, etc., for example, metal and Its alloy materials, polymers and their composite materials, animal and plant or polymer fiber materials, inorganic non-metallic materials, metamaterials (such as acoustic metamaterials, also called phononic crystals), or coating materials, etc. Among them, acoustic metamaterials are generally artificially composed of two materials, three materials or a greater number of materials, and they alternate along a single direction or multiple directions in the plane, or along multiple directions in space. A functional composite material or structure that is periodically arranged. The coating material is generally a composite material with an inorganic substance in the middle and an organic substance on the outside.

Wherein, the positional relationship of the plurality of additional members 12 can have various embodiments, for example, the plurality of additional members 12 are separated from each other to form sound wave adjustment parts independent of each other; or, some of the additional members 12 of the plurality of additional members 12 are connected to each other, Part of the additional members 12 are separated from each other to form a patterned additional structure. The patterned accessory structure and the diaphragm body 11 form a patterned sound wave adjustment part, and the properties of the patterned sound wave adjustment part are different from the properties of the sound wave adjustment part formed by a single attachment 12 and the diaphragm body 11. When a plurality of additional members 12 are separated from each other, they can be arranged in a circle, arranged in multiple circles, arranged in a matrix, arranged randomly or in other arrangement rules.

Among them, the structure of the acoustic wave adjustment part can have various implementations. For example, the additional member 12 is fixed on the surface of the diaphragm body 11, and the diaphragm body 11 is not provided with a groove structure or a hole structure under the additional member 12; or, the additional member 12 Fixed on the surface of the diaphragm body 11, a groove structure or a hole structure is arranged under the additional member 12; or, the diaphragm body 11 is provided with a groove structure or a hole structure, and the additional member 12 is filled in the groove structure or the hole structure. The following examples are used for description.

As shown in FIG. 2, the plurality of attachments 12 includes a first attachment 121, and the first attachment 121 and part of the diaphragm body 11 together form a first acoustic wave adjusting part 131. The structure of the other sound wave adjusting part formed by the remaining additional parts 12 of the plurality of additional parts 12 and the diaphragm body 11 may be the same as or different from the structure of the first sound wave adjusting part 131.

Exemplarily, as shown in FIG. 3, the first additional member 121 includes a fixing surface 1211, and the fixing surface 1211 is fixed on the surface of the diaphragm body 11 in full contact. The diaphragm body 11 is not provided with a groove structure or a hole structure under the first additional member 121. At this time, the structure of the diaphragm body 11 is complete and the processing is simple, which is beneficial to improve the manufacturing accuracy of the diaphragm 1 and the product yield. Among them, the speaker 10 can adjust the properties of the first sound wave adjusting part 131 by adjusting the material, shape, position and other factors of the first attachment 121, thereby adjusting the sound wave frequency of the newly added vibration source, so that the newly added sound wave can better By correcting and improving the initial sound wave to obtain an adjusted sound wave with better sound effect, the speaker 10 can have a better sound quality.

Exemplarily, please refer to FIG. 6. FIG. 6 is a schematic diagram of the structure of the loudspeaker 10 shown in FIG. 2 cut along A-A in other embodiments. In the case of no conflict, this embodiment may include most of the features of the foregoing embodiment. The following mainly describes the difference between this embodiment and the foregoing embodiment, and the same parts of the two will not be repeated.

The diaphragm body 11 has a groove 114. The first attachment 121 includes a fixing surface 1211, and the fixing surface 1211 is partially contacted and fixed to the surface of the diaphragm body 11 and covers the groove 114. Exemplarily, the fixing surface 1211 of the first attachment 121 covers the opening of the groove 114 on the surface of the diaphragm body 11. Wherein, a single first attachment 121 can cover one groove 114.

In this embodiment, the setting of the groove 114 can change the properties of the first sound wave adjusting part 131, so the first sound wave adjusting part 131 can adjust the properties of the first attachment 121 by adjusting the material, shape, position and other factors. Attribute adjustment can also be achieved by adjusting the depth of the groove 114, the shape of the cross-section (perpendicular to the depth), the cross-sectional area and other factors. Therefore, the adjustment method of the first sound wave adjusting part 131 is more flexible, which can reduce the design difficulty of the speaker 10. It also enables the speaker 10 to have better sound quality.

In some other embodiments, the groove 114 of the diaphragm body 11 may be replaced with a through hole. That is, the diaphragm body 11 has a through hole, and the fixing surface 1211 of the first attachment 121 is partially contacted and fixed to the surface of the diaphragm body 11 and covers the through hole. Exemplarily, the first attachment 121 covers the opening of the through hole located on one side surface of the diaphragm body 11. In some other embodiments, the first attachment 121 includes two parts, and the two parts respectively cover the openings of the through holes on the two sides of the diaphragm body 11. Wherein, a single first attachment 121 covers one through hole. At this time, the first acoustic wave adjusting portion 131 of the diaphragm 1 can also adjust the properties of the through hole by adjusting the cross-sectional shape, area and other factors.

Exemplarily, please refer to FIG. 7, which is a schematic diagram of the structure of the loudspeaker 10 shown in FIG. 2 cut along A-A in some other embodiments. In the case of no conflict, this embodiment may include most of the features of the foregoing embodiment. The following mainly describes the difference between this embodiment and the foregoing embodiment, and the same parts of the two will not be repeated.

The diaphragm body 11 has a groove 114. A single first attachment 121 covers a plurality of grooves 114 spaced apart from each other. The speaker 10 can adjust the position of the first sound wave adjusting part 131 of the diaphragm 1 by adjusting the positional relationship between the multiple grooves 114, the depth of the single groove 114, the shape of the cross section (perpendicular to the depth), the cross section area, etc. Attributes.

In some other embodiments, the groove 114 of the diaphragm body 11 may be replaced with a through hole. That is, the diaphragm body 11 has a through hole. A single first attachment 121 covers a plurality of through holes spaced apart from each other. The speaker 10 can adjust the properties of the first sound wave adjusting portion 131 of the diaphragm 1 by adjusting factors such as the positional relationship between a plurality of through holes, the cross-sectional shape and area of a single through hole.

Exemplarily, please refer to FIG. 8. FIG. 8 is a schematic diagram of the structure of the loudspeaker 10 shown in FIG. 2 cut along A-A in some other embodiments. In the case of no conflict, this embodiment may include most of the features of the foregoing embodiment. The following mainly describes the difference between this embodiment and the foregoing embodiment, and the same parts of the two will not be repeated.

The diaphragm body 11 has a groove 114, and the first attachment 121 is filled in the groove 114. In this embodiment, since the first attachment 121 is filled in the groove 114 of the diaphragm body 11, the outer surface of the diaphragm 1 is relatively flat and has better continuity, which is beneficial to improve the sound quality of the speaker 10. In addition, the structure of the groove 114 is designed according to the structure of the first attachment 121, and the first acoustic wave adjusting part 131 can adjust the properties of the first attachment 121 by adjusting the material, shape, position and other factors.

In some other embodiments, the groove 114 of the diaphragm body 11 may be replaced with a through hole. That is, the diaphragm body 11 has a through hole. The first attachment 121 is filled in the through hole. The structure of the through hole is designed according to the structure of the first attachment 121, and the first acoustic wave adjusting part 131 can adjust the properties of the first attachment 121 by adjusting the material, shape, position and other factors.

It is understandable that the above solution exemplifies several possible structures of the first sound wave adjusting part 131, and in some other embodiments, the first sound wave adjusting part 131 may also have other structures. In many embodiments of the present application, the structure of each sound wave adjusting part of the diaphragm 1 can be designed with reference to the above-mentioned solutions.

In some embodiments, as shown in FIG. 2, a plurality of additional members 12 are arranged in a circle. At this time, the newly added sound waves formed by the plurality of sound wave adjusting parts corresponding to the plurality of attachments 12 can be more evenly coupled with the initial sound waves diverging outward, so that the quality of the adjusted sound waves is better.

Exemplarily, a plurality of additional members 12 may be arranged at equal intervals, that is, the distance between any two adjacent additional members 12 is equal. In some other embodiments, the plurality of additional members 12 may also be arranged at unequal intervals. In some embodiments, the spacing between the plurality of attachments 12 and the vibration source 2 may be equal. In other embodiments, the spacing between the plurality of attachments 12 and the vibration source 2 may also be unequal. It can be understood that the number and arrangement position of the additional components 12 can be designed according to the adjustment requirements of the sound wave, so that the sound quality of the speaker 10 is better.

Exemplarily, the other attachments 12 on the diaphragm 1 have the same properties as the first attachment 121, and the diaphragm body 11 has the same structure of multiple parts corresponding to the multiple attachments 12. At this time, the multiple sound wave adjustment parts of the diaphragm 1 have the same attributes, and the multiple sound wave adjustment parts generate multiple new sound waves with the same frequency band. The new sound waves have sufficient energy and can fully modify and perfect the initial sound waves to obtain better sound effects. The best adjusted sound wave.

In some embodiments, please refer to FIG. 9, which is a schematic diagram of the structure of the speaker 10 provided by the present application in other embodiments. In the case of no conflict, the speaker 10 of the present embodiment may include most of the features of the speaker 10 of the foregoing embodiment. The following mainly describes the differences between the speaker 10 of the present embodiment and the speaker 10 of the foregoing embodiment, and the same parts of the two are not repeated.

The plurality of attachments 12 includes a first attachment 121 and a second attachment 122, and the second attachment 122 and the first attachment 121 have different attributes. At this time, the diaphragm 1 is formed with a first sound wave adjusting portion 131 including a first additional member 121 and a second sound wave adjusting portion 132 including a second additional member 122, the second sound wave adjusting portion 132 and the first sound wave adjusting portion The properties of 131 are different. The new vibration source corresponding to the second sound wave adjustment part 132 and the new vibration source corresponding to the first sound wave adjustment part 131 can form new sound waves of different frequencies, thereby jointly adjusting the initial sound waves, and the adjustment effect is better. , The adjusted sound waves have better sound effects, and the sound quality of the speaker 10 is better. Wherein, the structure of the second acoustic wave adjusting part 132 and the first acoustic wave adjusting part 131 of this embodiment can be designed with reference to the foregoing embodiment. The attributes of other attachments 12 in the plurality of attachments 12 may be the same as those of the first attachment 121 or the second attachment 122, and the plurality of attachments 12 may also include the attributes of the first attachment 121 and the second attachment 122. Different other attachments 12 are used to form sound wave adjustment parts with other attributes.

In some embodiments, please refer to FIG. 10. FIG. 10 is a schematic structural diagram of the speaker 10 provided by the present application in still other embodiments. In the case of no conflict, the speaker 10 of the present embodiment may include most of the features of the speaker 10 of the foregoing embodiment. The following mainly describes the differences between the speaker 10 of the present embodiment and the speaker 10 of the foregoing embodiment, and the same parts of the two are not repeated.

A plurality of additional elements 12 are arranged in multiple circles, and each circle of additional elements 12 is arranged around the middle part 111 of the diaphragm body 11. In other words, the multi-turn attachment 12 can be sleeved on the outside of the vibration source 2 in sequence. The multi-turn attachment 12 may be arranged periodically and regularly.

In this embodiment, the speaker 10 is provided with multi-turn attachments 12 to increase the number of attachments 12, that is, to increase the number of newly added vibration sources, so that the newly added sound waves can fully adjust the initial sound waves and obtain a more ideal adjusted post. Sound waves, the speaker 10 can have better sound effects.

Exemplarily, the plurality of additional members 12 may all be the first additional member 121, and the structure of the first acoustic wave adjusting part 131 of the diaphragm 1 including the first additional member 121 can refer to the foregoing embodiment.

In some embodiments, please refer to FIG. 11, which is a schematic diagram of the structure of the speaker 10 provided by the present application in still other embodiments. In the case of no conflict, the speaker 10 of the present embodiment may include most of the features of the speaker 10 of the foregoing embodiment. The following mainly describes the differences between the speaker 10 of the present embodiment and the speaker 10 of the foregoing embodiment, and the same parts of the two are not repeated.

A plurality of additional parts 12 are arranged in a plurality of circles. The plurality of attachments 12 includes a first attachment 121, a second attachment 122, and a third attachment 123, and the properties of the first attachment 121, the second attachment 122, and the third attachment 123 are different from each other. The attributes of part of the additional parts 12 of the remaining additional parts 12 are the same as those of the first additional part 121, the attributes of part of the additional parts 12 are the same as those of the second additional part 122, and the attributes of the part of the additional parts 12 are the same as those of the third additional part 123. The attributes are the same.

Exemplarily, the frame 3 of the speaker 10 adopts a metal square frame, the diaphragm body 11 adopts a square carbon fiber composite material plate, and the vibration source 2 adopts a rectangular magnetostrictor. The fixing surfaces of the plurality of attachments 12 are fixed to the surface of the diaphragm body 11 in full contact, and the diaphragm body 11 is not provided with a groove structure or a hole structure under the plurality of attachments 12. The first attachment 121 has a columnar shape with a square cross-section, and is made of 304 stainless steel. The second attachment 122 has a columnar shape with a star-shaped cross section, and is made of ceramic material. The third attachment 123 has a columnar shape and a circular cross-section, and is covered with cyano rubber to coat the epoxy resin material.

Please refer to FIGS. 12 and 13 together. FIG. 12 is a frequency response curve diagram of a conventional speaker 10 in which the vibration source 2 is a rectangular magnetostrictor. FIG. 13 is a frequency response curve diagram of the speaker 10 shown in FIG. 11.

Among them, the traditional speaker 10 uses a rectangular magnetostrictor as the vibration source 2, a metal square frame as the frame 3, and a square carbon fiber composite material plate as the diaphragm 1. It can be seen from Fig. 12 that the low frequency (200Hz to 1000Hz) energy of the traditional speaker 10 is less, and the intermediate frequency (1000Hz to 4000Hz) energy is too high, far from being able to meet the ideal frequency response curve (the ideal frequency response curve is between the two dashed lines) Within the range of the curve). It can be seen from FIG. 13 that the speaker 10 of this embodiment rebuilds the structure and composition of the diaphragm 1 through the material level reconstruction technology, so that a new sound wave can be formed on the propagation path of the original sound wave, and the new sound wave can be compared with the original sound wave. Coupled, the new sound wave can effectively increase the low-frequency energy, moderately depress/weaken the intermediate-frequency energy, and balance the high-frequency energy (4000Hz to 10000Hz), and finally make the frequency response curve of the adjusted sound wave more in line with the ideal frequency response curve. Energy can better meet the needs, making the sound or music style more distinctive and colorful.

Please refer to FIGS. 14 and 15 together. FIG. 14 is a schematic diagram of the structure of the speaker 10 provided by the present application in some other embodiments, and FIG. 15 is a schematic diagram of the structure of the speaker 10 shown in FIG. 14 cut along the C-C. In the case of no conflict, this embodiment may include most of the features of the foregoing embodiment. The following mainly describes the difference between this embodiment and the foregoing embodiment, and the same parts of the two will not be repeated.

In some embodiments, the diaphragm 1 includes a first attachment 121, a second attachment 122, a third attachment 123, and a fourth attachment 124 respectively located on four sides of the vibration source 2. The attributes of the second attachment 122 and the first attachment 122 The attributes of an attachment 121 are different, the attributes of the third attachment 123 are the same as those of the first attachment 121, and the attributes of the fourth attachment 124 are the same as the attributes of the second attachment 122. The first attachment 121, the second attachment 122, the third attachment 123, and the fourth attachment 124 are all generally strip-shaped sheets. The diaphragm body 11 is provided with grooves (1141, 1142, 1143, 1144) below the first attachment 121, the second attachment 122, the third attachment 123, and the fourth attachment 124.

For example, please refer to FIG. 14 and FIG. 16 together. FIG. 16 is a schematic structural diagram of the diaphragm body 11 of the diaphragm 1 shown in FIG. 14.

The frame 3 of the speaker 10 adopts a rectangular frame of metal material; the diaphragm body 11 adopts a rectangular aramid fiber epoxy resin board with a thickness of 400 microns; the vibration source 2 adopts a rectangular piezoelectric sheet. The middle portion 111 of the diaphragm body 11 is a rectangular area of 60 mm×48 mm for fixing the vibration source 2. The connecting portion 112 of the diaphragm body 11 is provided with a first groove 1141 of 60 mm×8 mm, a second groove 1142 of 48 mm×3 mm, a third groove 1143 of 60 mm×8 mm, and a fourth groove 1144 of 48 mm×3 mm. The first attachment 121 is a 250-micron thick white para-aramid fiber paper, which is fixed to the connecting portion 112 of the diaphragm body 11 and covers the first groove 1141; the second attachment 122 is a 100-micron yellow meta-aramid fiber paper. The fiber paper is fixed to the connecting portion 112 of the diaphragm body 11 and covers the second groove 1142; the third attachment 123 is a 250-micron thick white para-aramid fiber paper, which is fixed to the connecting portion 112 of the diaphragm body 11 And covers the third groove 1143; the fourth attachment 124 is a 100-micron thick yellow meta-aramid fiber paper, fixed to the connecting portion 112 of the diaphragm body 11 and covers the fourth groove 1144.

Please refer to FIGS. 17 and 18 together. FIG. 17 is a frequency response curve diagram of a conventional speaker 10 in which the vibration source 2 is a piezoelectric sheet, and FIG. 18 is a frequency response curve diagram of the speaker 10 shown in FIG. 14.

Among them, the traditional speaker 10 uses a rectangular piezoelectric sheet as the vibration source 2, uses a rectangular frame of metal material as the frame 3, and uses a rectangular aramid fiber epoxy resin plate as the diaphragm 1. It can be seen from Figure 17 that the traditional speaker 10 has obvious energy loss (valley) at 1000 Hz, while in the region of 1500 Hz to 3000 Hz, the intermediate frequency energy is too high, so the sound effect of the traditional speaker 10 is poor, and the sound of individual frequency bands There is a problem of obvious distortion. It can be seen from FIG. 18 that the speaker 10 of this embodiment rebuilds the structure and composition of the diaphragm 1 through the material level reconstruction technology, so that a new sound wave can be formed on the propagation path of the original sound wave, and the new sound wave can be compared with the original sound wave. Coupled, the new sound wave increases the energy of the initial sound wave at 1000Hz (concave and convex), the sound energy in the middle frequency region is suppressed to a certain extent, and finally the fluctuation range of the overall frequency response curve of the adjusted sound wave is reduced, and the frequency response curve is more consistent. With an ideal frequency response curve, the energy of each frequency band can better meet the demand, and the sound effect of the speaker 10 is optimized.

Please refer to FIG. 19, which is a schematic diagram of the structure of the speaker 10 provided by the present application in some other embodiments. In the case of no conflict, this embodiment may include most of the features of the foregoing embodiment. The following mainly describes the difference between this embodiment and the foregoing embodiment, and the same parts of the two will not be repeated.

In some embodiments, the additional member 12 adopts a layered structure, and the diaphragm body 11 may be provided with one or more grooves or through holes 115 below the additional member 12 to adjust the properties of the acoustic wave adjustment part. Among them, if a larger space needs to be hollowed out under the additional piece 12, a plurality of grooves or through holes 115 can be provided under the same additional piece 12, so as to meet the needs of the hollowed-out space and realize the sound wave adjustment part. The attribute adjustment will not greatly reduce the overall structural strength of the diaphragm body 11, thereby ensuring the reliability of the speaker 10.

Please refer to FIG. 20, which is a schematic diagram of the structure of the loudspeaker 10 provided by the present application in some other embodiments. In the case of no conflict, this embodiment may include most of the features of the foregoing embodiment. The following mainly describes the difference between this embodiment and the foregoing embodiment, and the same parts of the two will not be repeated.

In some embodiments, the diaphragm 1 includes a plurality of attachments 12 and a diaphragm body 11. The plurality of additional members 12 are all in a narrow strip shape, and some of the additional members 12 are connected to each other and some of the additional members 12 are separated from each other to form a patterned additional structure. The fixing surface of the additional structure is fixed to the surface of the diaphragm body 11 in full contact.

Exemplarily, the frame 3 of the speaker 10 is a rectangular frame made of zirconia ceramic material; the diaphragm body 11 is a rectangular 304 stainless steel plate with a thickness of 0.5 mm; the vibration source 2 is an electric exciter. The extension direction of the additional piece 12 is parallel to the diaphragm body 11. The size of the additional piece 12 is 0.08mm wide×0.1mm high, and there are multiple lengths, such as 40cm, 30cm, 20cm, etc. The additional piece 12 uses polymethacrylate Ester material.

Please refer to FIGS. 21 and 22 together. FIG. 21 is a frequency response curve diagram of a conventional speaker 10 in which the vibration source 2 is a piezoelectric sheet, and FIG. 22 is a frequency response curve diagram of the speaker 10 shown in FIG. 20.

Among them, the traditional loudspeaker 10 uses an electric exciter as the vibration source 2, a rectangular frame made of zirconia ceramic material as the frame 3, and a 304 stainless steel plate as the diaphragm 1. It can be seen from FIG. 21 that the low frequency of the traditional speaker 10 is better, but the middle frequency is lower, and the high frequency is insufficient. Therefore, the middle and high frequency loudness of the traditional speaker 10 is low and the clarity is poor. It can be seen from FIG. 17 that the speaker 10 of this embodiment rebuilds the structure and composition of the diaphragm 1 through the material level reconstruction technology, so as to form a new sound wave on the propagation path of the original sound wave, and the new sound wave can be compared with the original sound wave. Coupled, the new sound wave can increase the intermediate frequency of the initial sound wave and supplement the lack of high frequency. Finally, the energy of the adjusted sound wave in the full frequency range of low frequency, intermediate frequency and high frequency can be balanced, and the frequency response curve is more in line with the ideal frequency response. The curve optimizes the sound effect of the speaker 10.

It can be understood that, in some other embodiments, the plurality of additional members 12 may also form additional structures with other patterns, which is not strictly limited in the embodiments of the present application.

In some other embodiments, the speaker 10 may further include an upper cover and a lower cover. The upper cover and the lower cover are respectively fixed on both sides of the frame 3, so that a front cavity is formed between the diaphragm 1 and the upper cover, and a rear cavity is formed between the diaphragm 1 and the lower cover. The upper cover is also provided with a communication hole for connecting the front cavity to the external space of the speaker 10. The lower cover is also provided with a leak hole for connecting the rear cavity to the outer space of the speaker 10.

The above description is only the specific implementation of this application, but the protection scope of this application is not limited to this. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in this application. Covered in the scope of protection of the present application; the embodiments of the present application and the features in the embodiments can be combined with each other if there is no conflict. Therefore, the protection scope of this application shall be subject to the protection scope of the claims.

Claims (10)

1. A loudspeaker characterized by comprising a diaphragm, a vibration source and a frame;

   The diaphragm includes a diaphragm body and a plurality of additional parts. The diaphragm body includes a middle portion, a connecting portion, and an edge portion. The middle portion of the diaphragm body is located inside the edge portion of the diaphragm body. The connecting portion of the diaphragm body is connected between the middle portion of the diaphragm body and the edge portion of the diaphragm body, the vibration source is fixed to the middle portion of the diaphragm body, and the frame is fixed to the diaphragm body The plurality of attachments are fixed to the connecting portion of the diaphragm body and arranged around the middle of the diaphragm body, and the materials of the plurality of attachments are different from the material of the diaphragm body.
2. The speaker according to claim 1, wherein the plurality of attachments includes a first attachment, the first attachment includes a fixing surface, and the fixing surface is fixed to the diaphragm body in full contact. surface.
3. The speaker according to claim 1, wherein the diaphragm body has a groove or a through hole, the plurality of attachments includes a first attachment, the first attachment includes a fixing surface, and the fixing The surface part is fixed to the surface of the diaphragm body in contact and covers the groove or through hole.
4. The loudspeaker according to claim 3, wherein a single said first attachment part covers one said groove or a through hole; or, a single said first attachment part covers a plurality of said grooves spaced apart from each other. Or through holes.
5. The loudspeaker according to claim 1, wherein the diaphragm body has a groove or a through hole, the plurality of attachments includes a first attachment, and the first attachment is filled in the groove or Through hole.
6. The loudspeaker according to any one of claims 1 to 5, wherein the plurality of additional parts are arranged in a circle; or, the plurality of additional parts are arranged in a plurality of circles, and each circle of the additional parts They are all arranged around the middle of the diaphragm body.
7. The loudspeaker according to any one of claims 1 to 5, wherein part of the additional pieces of the plurality of additional pieces are connected to each other, and some of the additional pieces are separated from each other, so that the plurality of additional pieces The pieces form a patterned structure.
8. The loudspeaker according to claim 1, wherein the plurality of attachments includes a first attachment and a second attachment;

   The material of the first additional part is different from the material of the second additional part; and/or,

   The shape of the first attachment is different from the shape of the second attachment; and/or,

   The diaphragm body forms a groove or a through hole, and the first additional part and the second additional part respectively cover the grooves or through holes of different sizes.
9. The speaker according to claim 1, wherein the vibration source is a piezoelectric sheet, a magnetostrictive element, or an electric exciter.
10. An electronic device, comprising a housing and the speaker according to any one of claims 1 to 9, and the speaker is installed inside the housing.

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