A loudspeaker and electronic device

Abstract

The present disclosure relates to a loudspeaker and an electronic device. The loudspeaker comprises a cavity, a diaphragm driving part and a diaphragm group. The diaphragm group is arranged in the cavity. The diaphragm driving part is electrically connected with the diaphragm group. In a powered state, the diaphragm group generates deformation. The loudspeaker further comprises an airflow driving part arranged in the cavity. The airflow driving part is arranged to drive airflow in the cavity to flow to the diaphragm group, so that the diaphragm group generates vibration. In the present disclosure, the diaphragm driving part drives the diaphragm group to deform, changes the relaxation of the diaphragm group, and when the airflow flows to the diaphragm group, the diaphragm group generates vibration, so that the loudspeaker emits sound. By deforming the diaphragm group, the vibration frequency of the diaphragm group is adjusted, the sound quality of the loudspeaker is improved, and the use requirements of users are met.

Description

Technical Field

[0001] This disclosure relates to the field of loudspeakers, and more particularly to a loudspeaker and electronic device. Background Technology

[0002] With the development of the times, electronic devices are becoming increasingly important in people's work and life. Electronic devices such as mobile phones and tablets have become an indispensable part of people's lives. These electronic devices are often equipped with speaker devices to enable their communication and entertainment functions. Among them, the most common speaker device is the dynamic speaker.

[0003] However, as users' demands increase, dynamic speakers can no longer meet their needs for sound quality, thus affecting the user experience. Summary of the Invention

[0004] To overcome the problems existing in the related technologies, this disclosure provides a loudspeaker and an electronic device.

[0005] According to a first aspect of the present disclosure, a loudspeaker is provided, the loudspeaker including a cavity, a diaphragm driving part and a diaphragm assembly, the diaphragm assembly being disposed in the cavity, the diaphragm driving part being electrically connected to the diaphragm assembly, and the diaphragm assembly deforming when energized; The loudspeaker also includes an airflow driving unit disposed in the cavity, the airflow driving unit being configured to drive the airflow in the cavity to flow to the diaphragm assembly, causing the diaphragm assembly to vibrate.

[0006] Optionally, the voltage generated by the diaphragm drive unit when it is energized is set to adjust the tension and thickness of the diaphragm assembly to adjust the vibration frequency of the diaphragm assembly.

[0007] Optionally, the diaphragm assembly includes multiple membrane structures, which are located on the same plane and arranged side by side, and the multiple membrane structures are fixedly connected to the inner wall of the cavity.

[0008] Optionally, two adjacent membrane structures are spaced apart to form an outlet channel for the airflow; or, Multiple membrane structures are spliced ​​together. When energized, the membrane structures deform, creating gaps between adjacent membrane structures. These gaps are configured as air outlet channels for the airflow.

[0009] Optionally, the membrane structure includes at least one membrane layer, which are stacked together.

[0010] Optionally, the membrane structure includes a first type of membrane and at least one second type of membrane, wherein the first type of membrane is fixedly sandwiched within the second type of membrane.

[0011] Optionally, the second type of membrane covers the first type of membrane, the second type of membrane is fixedly connected to the inner wall of the cavity, and the first type of membrane is exposed on one side of the air outlet channel; or, Along the direction of the air outlet channel, at least one side of the first type of membrane is provided with the second type of membrane, and the first type of membrane and the second type of membrane are stacked on top of each other. The first type of membrane and the second type of membrane are respectively fixedly connected to the inner wall of the cavity.

[0012] Optionally, the diaphragm assembly further includes an electrode unit, and the diaphragm structure includes a first surface and a second surface, wherein the electrode unit is respectively disposed on the first surface and the second surface; wherein the first surface and the second surface are disposed opposite to each other; The electrode units located on the same plane are electrically connected to any two adjacent electrode units; wherein, the electrode unit of one of the multiple membrane structures is electrically connected to the diaphragm drive unit.

[0013] Optionally, the loudspeaker further includes a shell structure, the cavity being constructed within the shell structure, and the diaphragm assembly dividing the cavity into a front cavity and a rear cavity; The airflow drive unit is disposed in the rear cavity, so that the airflow flows from the front cavity to the rear cavity.

[0014] Optionally, the front cavity includes at least one sub-cavity; Along the flow direction of the airflow, a plurality of sub-cavities are arranged sequentially, and two adjacent sub-cavities are connected.

[0015] Optionally, the front cavity includes a first sub-cavity, a second sub-cavity, and a third sub-cavity connected in sequence; Along the flow direction of the airflow, the inner diameter of the first sub-cavity is larger than the inner diameter of the second sub-cavity, and the inner diameter of the second sub-cavity is smaller than the inner diameter of the third sub-cavity.

[0016] Optionally, the third sub-cavity is provided with a partition that extends along the flow direction of the airflow, thereby dividing the third sub-cavity into a first branch cavity and a second branch cavity.

[0017] Optionally, the shell structure further includes a sound outlet and an air inlet; wherein the sound outlet is connected to the front cavity, and the air inlet is connected to the rear cavity.

[0018] Optionally, the shell structure further includes a first shell cover and a second shell cover, wherein the first shell cover is provided with a first recessed groove, which is configured as the rear cavity, and the second shell cover is provided with a second recessed groove, which is configured as the front cavity. The diaphragm assembly is disposed between the first housing and the second housing, thereby separating the first recessed groove and the second recessed groove from each other.

[0019] According to a second aspect of the present disclosure, an electronic device is provided, the electronic device including a device body and at least one speaker as described above, the device body being provided with an accommodating space, and the speaker being mounted within the accommodating space.

[0020] Optionally, at least one first through hole is provided on the side of the device body, and the first through hole communicates with the corresponding sound outlet hole of the speaker.

[0021] Optionally, at least one second through hole is provided on the side of the device body, through which airflow from outside the device body flows into the accommodating space.

[0022] Optionally, the electronic device further includes a film layer covering the second through-hole.

[0023] The technical solutions provided by the embodiments of this disclosure can include the following beneficial effects: The diaphragm driving part in this disclosure drives the diaphragm assembly to deform, changing the relaxation of the diaphragm assembly. When airflow flows to the diaphragm assembly, the diaphragm assembly vibrates, causing the speaker to emit sound. By utilizing the deformation of the diaphragm assembly, the vibration frequency of the diaphragm assembly is adjusted, improving the sound quality of the speaker and meeting the user's needs.

[0024] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0025] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0026] Figure 1 This is a schematic diagram of the relevant speaker.

[0027] Figure 2 This is a schematic diagram of a loudspeaker according to an exemplary embodiment.

[0028] Figure 3 This is a schematic diagram of a loudspeaker according to an exemplary embodiment.

[0029] Figure 4 This is a schematic diagram illustrating the initial state of a membrane structure according to an example embodiment.

[0030] Figure 5 yes Figure 4 The exemplary embodiment shown in the figure illustrates the deformation state of the membrane structure.

[0031] Figure 6 This is a schematic diagram illustrating the initial state of a membrane structure according to an example embodiment.

[0032] Figure 7 yes Figure 6 The exemplary embodiment shown in the figure illustrates the deformation state of the membrane structure.

[0033] Figure 8 This is a schematic diagram illustrating the initial state of a membrane structure according to an example embodiment.

[0034] Figure 9 yes Figure 8 The exemplary embodiment shown in the figure illustrates the deformation state of the membrane structure.

[0035] Figure 10 This is a schematic diagram illustrating the initial state of a membrane structure according to an example embodiment.

[0036] Figure 11 yes Figure 10 The exemplary embodiment shown in the figure illustrates the deformation state of the membrane structure.

[0037] Figure 12 This is a schematic diagram of an electronic device according to an exemplary embodiment. Detailed Implementation

[0038] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the invention as detailed in the appended claims.

[0039] In related technologies, such as Figure 1 As shown, the moving-coil loudspeaker includes a diaphragm 1', a dome 2', a voice coil 3', and a magnet 4'. The dome 2' is stacked on top of the diaphragm 1', the magnet 4' is located on the side of the diaphragm 1' away from the dome 2', and the voice coil 3' is located radially outside the magnet 4' and connected to the diaphragm 1'.

[0040] When a moving-coil loudspeaker is in operation, magnet 4' experiences a force in the magnetic field. Magnet 4' and voice coil 3' work together, causing the current-carrying wire to move up and down in the magnetic field. This allows alternating current to flow through voice coil 3', which in turn causes diaphragm 1' to vibrate, pushing air to produce sound. However, changes in the magnetic field are easily affected by interference from other components within the electronic device, impacting the sound quality of the moving-coil loudspeaker.

[0041] This disclosure discloses a loudspeaker comprising a cavity, a diaphragm driving unit, and a diaphragm assembly. The diaphragm assembly is disposed within the cavity, and the diaphragm driving unit is electrically connected to the diaphragm assembly. When energized, the diaphragm assembly deforms. The loudspeaker also includes an airflow driving unit disposed within the cavity, configured to drive airflow within the cavity to the diaphragm assembly, causing the diaphragm assembly to vibrate. The diaphragm driving unit in this disclosure drives the deformation of the diaphragm assembly, changing its relaxation. When airflow flows to the diaphragm assembly, the diaphragm assembly vibrates, causing the loudspeaker to emit sound. By utilizing the deformation of the diaphragm assembly to adjust its vibration frequency, the sound quality of the loudspeaker is improved, meeting user needs.

[0042] In one exemplary embodiment, such as Figure 2 As shown, a loudspeaker includes a cavity 11, a diaphragm drive unit (not shown), and a diaphragm assembly 3. The diaphragm assembly 3 is disposed within the cavity 11 and is fixedly connected to the cavity 11 to improve the stability of the diaphragm assembly 3. The diaphragm assembly 3 is made of an elastic material, and the diaphragm drive unit is electrically connected to the diaphragm assembly 3. When energized, the diaphragm assembly 3 can deform to change its relaxation.

[0043] In this embodiment, as Figure 2 As shown, the speaker also includes an airflow drive unit 4 disposed within the cavity 11. The airflow drive unit 4 can be, for example, a miniature fan. When the airflow drive unit 4 operates, it drives the airflow within the cavity 11, directing it to the diaphragm assembly 3. The deformed diaphragm assembly 3 vibrates, producing sound and thus fulfilling the speaker's function. The speed of the miniature fan can adjust the airflow speed, thereby adjusting the sound volume. Simultaneously, in conjunction with the deformation of the diaphragm assembly 3, the relaxation of the diaphragm assembly 3 is changed, allowing the airflow to adjust the vibration frequency of the diaphragm assembly 3, improving the speaker's sound quality and enhancing the user experience.

[0044] The voltage generated by the diaphragm drive unit when energized is set to adjust the tension and thickness of the diaphragm assembly 3, thereby regulating its vibration frequency. Under different voltage values, the diaphragm assembly 3 is in a state of bending, stretching, or other deformation. This deformation changes the thickness and tension of the diaphragm assembly 3, thus affecting its vibration frequency. This achieves the goal of controlling the degree of deformation of the diaphragm assembly 3 through voltage to adjust its vibration frequency, enabling the speaker to produce different sounds to meet the user's sound requirements.

[0045] In one exemplary embodiment, such as Figure 2 As shown, the diaphragm assembly 3 includes multiple membrane structures 31, which are located on the same plane and arranged side by side. The multiple membrane structures form a diaphragm assembly. The multiple membrane structures 31 are fixedly connected to the inner wall of the cavity 11, making the connection between the membrane structures 31 and the cavity 11 more reliable.

[0046] In one example, such as Figure 2 , Figure 4 As shown, multiple membrane structures 31 are located on the same plane, and two adjacent membrane structures 31 are spaced apart to form an air outlet channel 311, so that when the airflow reaches the membrane structure 31, it can flow from one side of the membrane structure 31 to the other side of the membrane structure 31, ensuring the smooth flow of air.

[0047] In another example, such as Figure 2 , Figure 5 As shown, multiple membrane structures 31 are spliced ​​together. When energized, the membrane structures 31 deform, creating gaps between adjacent structures. These gaps are configured as airflow outlet channels 311. The gaps can be, for example, 1mm-3mm, and their size affects the airflow velocity, thus affecting the sound level. The deformation of the membrane structures 31 alters their tension and thickness. When the diaphragm assembly is thin and has high tension, the vibration frequency of the diaphragm assembly increases when airflow reaches the membrane structure 31, resulting in louder sound; conversely, when the diaphragm assembly is thick and has low tension, the vibration frequency decreases, resulting in quieter sound.

[0048] When the airflow drive unit 4 drives the airflow to the membrane structure 31, the airflow can flow along the air outlet channel 311, ensuring the smooth flow of air. When no power is applied, the membrane structure 31 is in its initial state, and multiple membrane structures 31 form a closed connection, separating the cavity 11, ensuring the airtightness of one side of the membrane structure 31, and preventing foreign objects from entering one side of the membrane structure 31.

[0049] It should be noted that the membrane structure 31 can be composed of a single membrane or multiple types of membranes to meet the different characteristics of the membrane structure 31.

[0050] In one example, such as Figure 4 , Figure 5 As shown, the membrane structure 31 is made of an electroactive polymer film, giving it good stress-strain characteristics. These characteristics can include various forms of mechanical response such as contraction, bending, tightening, or expansion. Under an applied electric field, its internal structural characteristics give it high tear resistance and inherent vibration damping properties. The membrane structure 31 includes at least one membrane body 312, which are stacked sequentially to achieve the target stress. It is understood that the number of membrane body 312 layers can also affect the thickness, tensile morphology, and deformation of the membrane structure 31; the specific number of membrane body 312 layers depends on the actual design. A single-type membrane structure 31 is simple in structure, easy to implement, and allows for easy control of the stress within the membrane structure 31.

[0051] In another example, such as Figures 6-11As shown, the membrane structure 31 includes a first type of membrane 313 and a second type of membrane 314. The first type of membrane 313 is fixedly sandwiched within the second type of membrane 314, forming a composite structure. The first type of membrane 313 can be, for example, an electrostrictive film (ESP) to improve its tear resistance and give it good tensile properties. The second type of membrane 314 can be, for example, an electronic electrostrictive film (EAP). When energized, the second type of membrane 314 undergoes bending deformation and exhibits good deformation characteristics. The composite membrane structure 31 achieves better performance; under deformation, the membrane structure 31 will not be damaged, thus extending its service life.

[0052] Reference Figure 6 , Figure 7 As shown, the second type of membrane 314 can cover the first type of membrane 313, providing protection for the first type of membrane 313. The first type of membrane 313 is fixedly connected to the inner wall of the cavity 11 through the second type of membrane 314, and the surface of the first type of membrane 313 on one side of the air outlet channel 311 is exposed, ensuring the tensile characteristics of the membrane structure 31. The thickness of the first type of membrane 313 is greater than the thickness of the second type of membrane 314, improving the tear resistance of the first type of membrane 313.

[0053] Reference Figure 8 , Figure 9 As shown, along the thickness direction of the first type of membrane 313, the second type of membrane 314 can also be disposed on both sides of the first type of membrane 313, with the first type of membrane 313 and the second type of membrane 314 stacked together, so that the first type of membrane 313 is sandwiched between the second type of membrane 314. The first type of membrane 313 and the second type of membrane 314 are respectively fixedly connected to the inner wall of the cavity 11, ensuring that the connection between the membrane structure 31 and the cavity 11 remains reliable under tension and bending conditions, preventing the membrane structure 31 from detaching when deformed. The thickness of the first type of membrane 313 is greater than the thickness of the second type of membrane 314.

[0054] Reference Figure 10 , Figure 11As shown, along the thickness direction of the first type of membrane 313, a second type of membrane 314 is disposed on one side of the first type of membrane 313. The first type of membrane 313 and the second type of membrane 314 are stacked, and the first type of membrane 313 and the second type of membrane 314 have the same thickness. The length of the first type of membrane 313 is greater than the length of the second type of membrane 314, so that the second type of membrane 314 is attached to the first type of membrane 313. The second type of membrane 314 is fixedly connected to the inner wall of the cavity 11 through the first type of membrane 313. The first type of membrane 313 and the second type of membrane 314 are configured in cooperation. The second type of membrane 314 improves the bending characteristics of the membrane structure 31, and the first type of membrane 313 improves the tensile characteristics of the membrane structure 31. In the stretched state, the part of the first type of membrane 313 near the air outlet channel 311 is thinner and has better tensile characteristics, while the part near the inner wall of the cavity 11 is thicker and has weaker tensile characteristics, thus saving production costs.

[0055] In this embodiment, refer to Figure 2 , Figure 3 As shown, the diaphragm assembly 3 also includes an electrode unit 32, and the membrane structure 31 includes a first surface and a second surface, with the electrode unit 32 respectively disposed on the first surface and the second surface. The first surface and the second surface are arranged opposite to each other.

[0056] Electrode units 32 located on the same plane are electrically connected to any two adjacent electrode units 32. Among the plurality of membrane structures 31, the electrode unit 32 of one membrane structure 31 is electrically connected to the diaphragm drive unit.

[0057] Electrode unit 32 includes a positive electrode 321 and a negative electrode 322. The positive electrode 321 is disposed, for example, on the first surface of the membrane structure 31, and the negative electrode 322 is disposed, for example, on the second surface of the membrane structure 31. The positive electrode 321 and the negative electrode 322 are electrically connected to the diaphragm driving part, respectively, to achieve the effect of energizing the membrane structure 31. The positive electrodes 321 of each membrane structure 31 are electrically connected to each other through wires (not shown in the figure), and the negative electrodes 322 are also electrically connected to each other through conductive wires. The membrane structure 31 can be electrically connected to the diaphragm driving part separately, or the positive electrode 321 and the negative electrode 322 on one of the membrane structures 31 can be electrically connected to the diaphragm driving part to reduce wiring and avoid excessive or excessively long wires that may cause short circuits.

[0058] Of course, it is understood that the above-mentioned positive electrode 321 is disposed on the first surface of the membrane structure 31 and the negative electrode 322 is disposed on the second surface of the membrane structure 31, which is only used to explain this embodiment and does not constitute a limitation on this application. The positive electrode 321 and the negative electrode 322 may also be disposed on the second surface and the first surface respectively, and the specific placement and the area of ​​the electrode covering the membrane structure are subject to the actual design.

[0059] In one exemplary embodiment, such as Figure 2, Figure 3 As shown, the loudspeaker also includes a shell structure 1, a cavity 11 is constructed within the shell structure 1, and a diaphragm assembly 3 divides the cavity 11 into a front cavity 111 and a rear cavity 112.

[0060] The airflow drive unit 4 is located in the rear cavity 112, which allows the airflow to flow from the rear cavity 112 to the front cavity 111, ensuring the smooth flow of air in the cavity 11.

[0061] In one example, such as Figure 2 As shown, the front cavity 111 includes sub-cavities. The spatial volume of the sub-cavities is determined by actual design, primarily to meet the audio quality requirements of the speaker. The front cavity 111 is not limited to a single sub-cavity; multiple sub-cavities can be provided, arranged along the airflow direction (refer to...). Figure 2 As shown on the X-axis, multiple sub-cavities are arranged sequentially, with adjacent sub-cavities connected, which increases the spatial volume of the front cavity 111, improves the low-frequency effect of the speaker, and meets the user's needs for audio quality.

[0062] In another example, such as Figure 3 As shown, the front cavity 111 includes a first sub-cavity 1112, a second sub-cavity 1113, and a third sub-cavity 1111 connected in sequence. Along the airflow direction (refer to...) Figure 3 As shown on the X-axis, the inner diameter of the first sub-cavity 1112 is larger than the inner diameter of the second sub-cavity 1113, and the spatial volume of the first sub-cavity 1112 is larger than the spatial volume of the second sub-cavity 1113. When sound passes from the first sub-cavity 1112 to the second sub-cavity 1113, a tightening effect is created, which acts as a filter. Conversely, the inner diameter of the second sub-cavity 1113 is smaller than the inner diameter of the third sub-cavity 1111, and the spatial volume of the second sub-cavity 1113 is smaller than the spatial volume of the third sub-cavity 1111, thus amplifying the sound.

[0063] The third sub-cavity 1111 contains a partition extending along the airflow direction, dividing it into a first branch cavity 11111 and a second branch cavity 11112. The first branch cavity 11111 has a larger volume than the second branch cavity 11112. When sound passes through the third sub-cavity 1111, the first and second branch cavities work together to create different sound effects. By varying the volume allocation and proportions of the first, second, and third sub-cavities 1112, different sound output designs are achieved to realize various sound effects, such as deep bass and stereo, providing users with a more pleasing audio experience and enhancing their overall enjoyment.

[0064] In this embodiment, as Figure 2 , Figure 3 As shown, the shell structure 1 also includes a sound outlet 131 and an air inlet 121. The sound outlet 131 is connected to the front cavity 111, allowing sound to propagate to the outside; simultaneously, airflow within the front cavity 111 can also flow to the outside through the sound outlet 131, ensuring airflow circulation. The air inlet 121 is connected to the rear cavity 112, allowing airflow to enter the rear cavity 112 from the outside, thus creating a circulating airflow between the front cavity 111 and the rear cavity 112.

[0065] In this embodiment, as Figure 2 , Figure 3 As shown, the shell structure 1 also includes a first shell cover 12 and a second shell cover 13. The first shell cover 12 has a first recessed groove, which is configured as a rear cavity 112. The second shell cover 13 has a second recessed groove, which is configured as a front cavity 111. The diaphragm assembly 3 is disposed between the first shell cover 12 and the second shell cover 13, thus separating the first and second recessed grooves. The first shell cover 12 and the second shell cover 13 are assembled together to facilitate the installation and removal of the diaphragm assembly 3. When the diaphragm assembly 3 is damaged, either the first shell cover 12 or the second shell cover 13 can be removed to replace the diaphragm assembly 3.

[0066] The loudspeaker disclosed herein uses voltage to control the deformation of the diaphragm assembly, thereby changing the thickness and tension of the diaphragm assembly. When airflow flows to the diaphragm assembly, the airflow impacts the diaphragm assembly, causing it to vibrate and generate different vibration frequencies, thus producing different sounds. When the diaphragm assembly becomes thinner and more taut, the vibration frequency of the diaphragm assembly increases; when the diaphragm assembly becomes thicker and more relaxed, the vibration frequency of the diaphragm assembly decreases.

[0067] Meanwhile, the diaphragm assembly, combined with cavities of different proportions and volumes, creates different audio effects. The first, second, and third sub-cavities within the front cavity have different volumes and inner diameters, acting like vocal cords to tighten and filter the sound, correct the sound spectrum, and ultimately propagate it out through the sound outlet to achieve different sound effects.

[0068] This disclosure also provides an electronic device, which includes a device body and at least one speaker as described in any of the embodiments above. The device body is provided with an accommodating space, and the speaker is installed in the accommodating space, thereby realizing the audio function of the electronic device.

[0069] In one exemplary embodiment, such as Figure 2 , Figure 12As shown, the electronic device includes a device body 2, a speaker, and a motherboard (not shown in the figure). The device body 2 is, for example, a housing, and has a receiving space 21. The speaker and the motherboard are respectively installed in the receiving space 21, and the speaker is electrically connected to the motherboard to facilitate speaker control.

[0070] The device body 2 has a first through hole 22 on its side. The first through hole 22 is connected to the corresponding speaker's sound outlet hole 131. Sound can be transmitted through the sound outlet hole 131 to the first through hole 22 and then to the outside of the electronic device so that the user can listen to it.

[0071] It should be noted that the number of speakers is not limited to one; two or more can be used to improve the audio effect of the electronic device. The speakers can be distributed circumferentially along the device body 2 to create multi-directional stereo sound. Furthermore, the side of the device body 2 is provided with first through holes 22 corresponding to the number of speakers, ensuring that sound can propagate normally and airflow can exit.

[0072] In this embodiment, as Figure 2 , Figure 12 As shown, at least one second through hole 23 is provided on the side of the device body 2, and the airflow outside the device body 2 flows into the accommodating space 21 through the second through hole 23.

[0073] When the airflow drive unit 4 is running, it drives the airflow in the rear cavity 112 into the front cavity 111, and the airflow in the rear cavity 112 flows out of the outside of the device body 2 through the sound outlet hole 131 and the first through hole 22.

[0074] When the airflow in the rear cavity 112 enters the front cavity 111, the air pressure in the rear cavity 112 decreases, making the air pressure in the rear cavity 112 lower than the air pressure in the accommodating space 21. The airflow in the accommodating space 21 then enters the rear cavity 112 to replenish the air in the rear cavity 112.

[0075] When the airflow in the accommodating space 21 enters the rear cavity 112 through the air inlet 121, the air pressure value in the accommodating space 21 is lower than the air pressure value outside the device body 2. The cold airflow outside the device body 2 enters the accommodating space 21 to replenish the air in the accommodating space 21.

[0076] It should be noted that, in this embodiment, the sound-generating device, in addition to simulating the human vocal cord structure for sound generation, can also dissipate heat while generating sound. For example, a circulating airflow can be formed through the second through-hole 23, the accommodating space 21, the speaker cavity 11, and the first through-hole 22. Cool airflow from outside the device body 2 enters the accommodating space 21, carrying away some of the heat within the accommodating space 21, then enters the speaker, carrying away the heat within the speaker, forming a hot airflow, which is finally discharged from the device body 2. This effectively improves the heat dissipation of the electronic device, reduces its temperature, and meets the performance requirements of the electronic device.

[0077] In this embodiment, as Figure 2 , Figure 12 As shown, the electronic device also includes a membrane layer 5, which covers the second through-hole 23. The membrane layer 5 can be disposed on the outside of the device body 2, simplifying the installation process. Alternatively, the membrane layer 5 can be disposed within the accommodating space 21 to protect the membrane layer 5 and prevent damage. The membrane layer 5 is, for example, a waterproof and breathable membrane, capable of blocking liquid and solid foreign objects from the outside of the device body 2, protecting the components within the accommodating space 21 from contamination and affecting their performance.

[0078] It should be noted that the membrane layer 5 is not limited to the location of the second through hole 23, but can also be located at the location of the first through hole 22, in order to protect the sound outlet hole 131 of the speaker and prevent foreign objects from entering the front cavity 111 of the speaker.

[0079] The electronic device disclosed herein utilizes a speaker as a handset or loudspeaker to enable call and audio playback functions, thus meeting basic user needs. Furthermore, by improving the speaker's sound quality, the user experience is enhanced, making the device more competitive in the market.

[0080] Other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the following claims.

[0081] It should be understood that the present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A loudspeaker, characterized in that, The loudspeaker includes a cavity, a diaphragm driving unit, and a diaphragm assembly. The diaphragm assembly is disposed in the cavity, and the diaphragm driving unit is electrically connected to the diaphragm assembly. When energized, the diaphragm assembly deforms. The loudspeaker also includes an airflow driving unit disposed in the cavity, the airflow driving unit being configured to drive the airflow in the cavity to flow to the diaphragm assembly, causing the diaphragm assembly to vibrate; The airflow drive unit adjusts the airflow speed and the sound level. The diaphragm assembly includes multiple membrane structures, and when energized, air outlet channels are provided between adjacent membrane structures.

2. The loudspeaker according to claim 1, characterized in that, The voltage generated by the diaphragm drive unit when it is energized is set to adjust the tension and thickness of the diaphragm assembly in order to adjust the vibration frequency of the diaphragm assembly.

3. The loudspeaker according to claim 1, characterized in that, Multiple membrane structures are located on the same plane and arranged side by side, and the multiple membrane structures are fixedly connected to the inner wall of the cavity.

4. The loudspeaker according to claim 3, characterized in that, The membrane structures are spaced apart to form an outlet channel for the airflow; or, Multiple membrane structures are spliced ​​together. When energized, the membrane structures deform, creating gaps between adjacent membrane structures. These gaps are configured as air outlet channels for the airflow.

5. The loudspeaker according to claim 4, characterized in that, The membrane structure includes at least one membrane layer, which are stacked together.

6. The loudspeaker according to claim 4, characterized in that, The membrane structure includes a first type of membrane and a second type of membrane, with the first type of membrane fixedly sandwiched within the second type of membrane.

7. The loudspeaker according to claim 6, characterized in that, The second type of membrane covers the first type of membrane, the second type of membrane is fixedly connected to the inner wall of the cavity, and the first type of membrane is exposed on one side of the air outlet channel; or, Along the thickness direction of the first type of membrane, at least one side of the first type of membrane is provided with the second type of membrane, and the first type of membrane and the second type of membrane are stacked together. The first type of membrane and the second type of membrane are respectively fixedly connected to the inner wall of the cavity.

8. The loudspeaker according to claim 3, characterized in that, The diaphragm assembly further includes an electrode unit. The diaphragm structure includes a first surface and a second surface, and the electrode unit is respectively disposed on the first surface and the second surface; wherein the first surface and the second surface are disposed opposite to each other. The electrode units located on the same plane are electrically connected to any two adjacent electrode units; wherein, the electrode unit of one of the multiple membrane structures is electrically connected to the diaphragm drive unit.

9. The loudspeaker according to claim 1, characterized in that, The loudspeaker also includes a shell structure, the cavity is constructed within the shell structure, and the diaphragm assembly divides the cavity into a front cavity and a rear cavity; The airflow drive unit is disposed in the rear cavity, so that the airflow flows from the front cavity to the rear cavity.

10. The loudspeaker according to claim 9, characterized in that, The front cavity includes at least one sub-cavity; Along the flow direction of the airflow, a plurality of sub-cavities are arranged sequentially, and two adjacent sub-cavities are connected.

11. The loudspeaker according to claim 9, characterized in that, The front cavity includes a first sub-cavity, a second sub-cavity, and a third sub-cavity connected in sequence; Along the flow direction of the airflow, the inner diameter of the first sub-cavity is larger than the inner diameter of the second sub-cavity, and the inner diameter of the second sub-cavity is smaller than the inner diameter of the third sub-cavity.

12. The loudspeaker according to claim 11, characterized in that, The third sub-cavity is provided with a partition, which extends along the flow direction of the airflow, thereby dividing the third sub-cavity into a first branch cavity and a second branch cavity.

13. The loudspeaker according to claim 9, characterized in that, The shell structure also includes a sound outlet and an air inlet; wherein the sound outlet is connected to the front cavity and the air inlet is connected to the rear cavity.

14. The loudspeaker according to claim 9, characterized in that, The shell structure further includes a first shell cover and a second shell cover. The first shell cover is provided with a first recessed groove, which is configured as the rear cavity. The second shell cover is provided with a second recessed groove, which is configured as the front cavity. The diaphragm assembly is disposed between the first housing and the second housing, thereby separating the first recessed groove and the second recessed groove from each other.

15. An electronic device, characterized in that, The electronic device includes a device body and at least one speaker as described in any one of claims 1-14, the device body having an accommodating space and the speaker being mounted within the accommodating space.

16. The electronic device according to claim 15, characterized in that, The device body has at least one first through hole on its side, and the first through hole is connected to the sound outlet hole of the corresponding speaker.

17. The electronic device according to claim 15, characterized in that, The device body has at least one second through hole on its side, through which airflow from outside the device body flows into the accommodating space.

18. The electronic device according to claim 17, characterized in that, The electronic device further includes a film layer that covers the second through-hole.

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