Sound production module and electronic equipment

By placing ultra-thin sound cell side by side in the dual speaker system and setting dampers, the problem of airflow exchange size control is solved, and the Q-value adjustment and privacy call functions are improved, ensuring loudness and user experience.

CN222192549UActive Publication Date: 2024-12-17GOERTEK INC
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Patent Information

Application Number
CN202420649871.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-03-29
Publication Date
2024-12-17
Estimated Expiration
2034-03-29

AI Technical Summary

Technical Problem

The existing dual speaker system cannot effectively control the airflow exchange size between the two speakers, resulting in the product's Q value being unable to be controlled within a reasonable range of 0.707-1.7, affecting loudness and privacy call functions.

Method used

Design at least two ultra-thin sound monomers placed side by side, and set damping parts with acoustic resistance range of 6-260MKS Rayls between two adjacent sound monomers. Use the damping parts to adjust airflow interference and control the Q of the sound module. The value is within the range of 0.707-1.7.

Benefits of technology

It realizes the reduction of the thickness of the sound module, enhances the private call function, ensures the terminal user experience, and adjusts the Q value to ensure that there is no noise in the receiver mode and the loudness meets the needs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model belongs to the technical field of electro-acoustic conversion, and particularly relates to a sound production module and electronic equipment, the sound production module comprises a shell, at least two sound production monomers and a damping piece, and an accommodating cavity is formed in the shell; the at least two sound production monomers are accommodated in the accommodating cavity side by side, each sound production monomer comprises a shell and a sound cavity arranged in the shell, the shell is provided with a sound outlet hole connected with the sound cavity, and at least part of the sound outlet holes of the two adjacent sound production monomers are oppositely arranged; the damping piece is arranged between two adjacent sound production single bodies, and at least part of sound outlet holes of the sound production single bodies are opposite to the damping piece; the damping piece is a breathable piece, and the acoustic resistance range of the damping piece is 6-260 MKS Rayls. According to the sound production module provided by the utility model, the damping pieces are arranged between the adjacent sound production monomers, so that the thickness of the sound production module can be reduced, a loudspeaker function, a private call function and differential design of the sound production monomers can be realized, and the loudness and sound production effect of the sound production module in a receiver mode can be ensured.
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Description

Technical Field

[0001] The utility model belongs to the technical field of electroacoustic conversion, and specifically relates to a sound module and an electronic device. Background Art

[0002] As we all know, the sound leakage of communication electronic devices during calls can cause the user's call content to be heard by other people around, which in turn causes the user's privacy to be leaked and endangers personal information security. To solve the problem of sound leakage during calls, the speaker in the communication electronic device can be designed with two sound systems. The sound waves generated by these two sound systems have opposite phases. The two sound waves have the same energy and opposite phases, and the energy cancels out, achieving the function of far-field sound leakage prevention.

[0003] In the related art, the design of speaker sound leakage prevention generally includes two speakers set back to back, double-sided speakers or multiple single-sided speakers side by side; however, the thickness of the speakers set back to back is relatively large, which limits their application; it is difficult to differentiate the design of double-sided speakers, and a bad vibration unit will lead to overall bad performance; when multiple single-sided speakers are placed side by side to realize the function of private calls, that is, the receiver mode, the vibration directions of the two speaker vibration systems are opposite, and the airflow will be exchanged between the two speakers. The sound holes on the adjacent sides of the two speakers have the greatest effect on the airflow exchange. However, the current dual-speaker system set side by side cannot effectively control the size of the airflow exchange between the two adjacent speakers, resulting in the Q value of the product cannot be controlled within the reasonable range of 0.707-1.7, and the loudness of the speaker module is relatively low, which affects actual use.

[0004] Therefore, in view of the above shortcomings, the present utility model is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a sound module and an electronic device to solve the problem in the prior art that the dual speaker system cannot effectively control the size of the airflow exchange between the two speakers, resulting in the Q value of the product cannot be controlled within a reasonable range of 0..707-1.7.

[0006] The first aspect of the utility model provides a sound module, comprising:

[0007] A housing having a receiving cavity formed therein;

[0008] At least two sound-emitting units, at least two of which are accommodated side by side in the accommodation cavity, each of which comprises a shell and a sound cavity arranged in the shell, the shell is provided with a sound outlet connected to the sound cavity, and at least part of the sound outlet holes of two adjacent sound-emitting units are arranged opposite to each other;

[0009] A damping member, the damping member is arranged in the housing, the damping member is arranged between two adjacent sound-emitting units, and at least part of the sound outlet holes of the two adjacent sound-emitting units are opposite to the damping member;

[0010] Wherein, the damping member is a breathable member, and the acoustic resistance range of the damping member is 6-260 MKS Rayls.

[0011] The sound module provided by the utility model may also have the following additional technical features:

[0012] In a specific implementation manner of the utility model, the damping member is a breathable mesh, the inner wall of the shell is provided with an annular embedding groove, and the peripheral edge of the breathable mesh is arranged in the annular embedding groove.

[0013] In a specific implementation of the utility model, the breathable mesh cloth comprises a support frame and an acoustic mesh cloth arranged on the support frame, and the support frame is arranged in the annular embedding groove.

[0014] In a specific implementation of the utility model, the damping member is sound-absorbing cotton, and the compression ratio of the sound-absorbing cotton is (2-10): 1;

[0015] And / or, the sound-absorbing cotton is polyurethane sound-absorbing cotton or melamine sound-absorbing cotton.

[0016] In a specific embodiment of the utility model, the sound module includes two sound monomers arranged side by side, each of the sound monomers includes a first side and a second side arranged opposite to each other, the first side and the second side are both provided with the sound outlet, the first side is arranged opposite to the adjacent sound monomer, and the damping member is arranged between the first sides of the two sound monomers;

[0017] Alternatively, the sound module includes three sound units arranged side by side, each of the sound units includes a first side and a second side arranged opposite to each other, the first side and the second side of each sound unit are provided with the sound outlet hole, and the first side and the second side of the sound unit located in the middle position are provided with the damping member between the corresponding adjacent sound units.

[0018] In a specific embodiment of the utility model, the sound-emitting unit includes a frame and a vibration system and a magnetic circuit system connected to the frame, the vibration system includes a diaphragm assembly fixed to the frame and a voice coil connected to the diaphragm assembly at one end, the magnetic circuit system has a magnetic gap, and the other end of the voice coil is inserted into the magnetic gap, the diaphragm assembly, the frame and the magnetic circuit system cooperate to define the sound cavity, and the frame and part of the magnetic circuit system form the outer shell.

[0019] In a specific embodiment of the utility model, the magnetic circuit system includes a magnetic yoke and a central magnetic portion and a side magnetic portion of the magnetic yoke, the central magnetic portion and the side magnetic portion are spaced to form the magnetic gap, the magnetic yoke includes a main body and flange portions which are arranged at both ends of the main body and are bent and extended in a direction close to the diaphragm assembly, the central magnetic portion and the side magnetic portion are arranged on the main body, the flange portion is located on a side of the side magnetic portion away from the central magnetic portion, and the flange portion is provided with the sound outlet hole;

[0020] Alternatively, the sound-emitting unit further includes a breathable spacer, the frame, the breathable spacer and part of the magnetic circuit system form the outer shell, the breathable spacer is snap-fitted with the magnetic circuit system, and the breathable spacer is provided with the sound outlet hole.

[0021] In a specific implementation of the utility model, the product quality factor Q value of the sound module is between 0.707-1.7.

[0022] In a specific embodiment of the utility model, the sound module includes two sound monomers, and the sound module has a first working mode and a second working mode. In the first working mode, the vibration directions of the vibration systems of the two sound monomers are the same, and in the second working mode, the vibration directions of the vibration systems of the two sound monomers are opposite;

[0023] Or, the sound module includes three sound units, and the sound module has a first working mode and a second working mode. In the first working mode, the vibration directions of the vibration systems of the three sound units are the same. In the second working mode, the vibration direction of the vibration system of the sound unit located in the middle position is opposite to the vibration direction of the vibration system of the sound units located at both ends.

[0024] The second aspect of the utility model also provides an electronic device, comprising the sound module described in any one of the above.

[0025] The sound module proposed by the utility model is designed with at least two ultra-thin sound units placed side by side, and a damping member with a sound resistance range of 6-260MKS Rayls is arranged between two adjacent sound units. While reducing the thickness of the sound module, realizing the external speaker function, the private call function and the differentiated design of the two sound units, the damping member can also be used to adjust the airflow to reduce the mutual interference between the airflows generated by the two adjacent sound units, so that the product Q value of the sound module can be adjusted more simply, so that the product Q value is controlled within a reasonable range of 0.707-17, ensuring that the whole machine does not generate noise in the receiver mode, and at the same time the loudness fully meets the use requirements, thereby ensuring the experience of the end user. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 This is an exploded view of a sound module in a specific embodiment of the utility model;

[0028] Figure 2 for Figure 1 A schematic diagram of the arrangement of the sound-emitting units in the sound-emitting module of the embodiment;

[0029] Figure 3 for Figure 1 A cross-sectional view of the middle sound module;

[0030] Figure 4 It is a cross-sectional view of a sound module in another specific embodiment of the utility model.

[0031] Description of reference numerals:

[0032] 100-sound module;

[0033] 10-shell, 11-first shell, 12-second shell, 13-sound outlet, 14-front cavity, 15-rear cavity;

[0034] 20-sound-generating unit; 31-breathable mesh, 32-sound-absorbing cotton. DETAILED DESCRIPTION

[0035] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0036] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0037] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0038] For ease of description, spatial relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is turned over, then the element described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." can include both upper and lower orientations. The device can be oriented otherwise (rotated 90 degrees or in other directions) and the spatial relative descriptors used in the text are interpreted accordingly.

[0039] Reference Figure 1-Figure 4 In a first aspect, the present invention provides a sound module 100, which includes a housing 10, at least two sound units 20 and a damping member (e.g. Figure 3 and Figure 4The breathable mesh 31 or sound-absorbing cotton 32 shown in the figure, wherein a receiving cavity is formed in the shell 10; at least two sound-emitting units 20 are received side by side in the receiving cavity, each sound-emitting unit 20 comprises an outer shell and a sound cavity arranged in the outer shell, the outer shell is provided with a sound outlet hole connected to the sound cavity, and at least part of the sound outlet holes of two adjacent sound-emitting units 20 are arranged opposite to each other; a damping member is arranged in the shell 10, the damping member is arranged between two adjacent sound-emitting units 20, and at least part of the sound outlet holes of two adjacent sound-emitting units 20 are opposite to the damping member; wherein the damping member is a breathable member, and the sound resistance range of the damping member is 6-260MKS Rayls.

[0040] Specifically, the housing 10 may include a first housing 11 and a second housing 12, which are buckled relative to each other to form a receiving cavity, wherein the first housing 11 is provided with a sound outlet 13. The sound-emitting monomer 20 is arranged in the receiving cavity, and is enclosed with the first housing 11 to form a front cavity 14, and a plurality of front cavities 14 are respectively connected with the sound outlet 13. A plurality of sound-emitting monomers 20 and the housing 10 are enclosed together to form a rear cavity 15, and the sound cavity in the sound-emitting monomer 20 is connected with the rear cavity 15 through the sound outlet hole. A plurality of sound-emitting monomers 20 are arranged side by side, and at least part of the sound outlet holes of two adjacent sound-emitting monomers 20 are arranged relative to each other. Arranging a plurality of sound-emitting monomers 20 in the receiving cavity can not only improve the acoustic performance of the sound module 100, but also can use at least two sound-emitting monomers 20 to form an acoustic dipole to improve the far-field noise reduction effect of the sound module 100 and enhance the privacy of the call.

[0041] The damping member is disposed in the receiving cavity, and is specifically disposed between adjacent sound-emitting monomers 20, and is at least partially opposite to the sound outlet of the sound-emitting monomer 20. Since the damping member is made of acoustic resistance material and is disposed between adjacent sound-emitting monomers 20, when the sound waves generated by the vibration of the sound-emitting monomer 20 are transmitted to the adjacent sound-emitting monomer 20 through the sound outlet, the damping member can play a role in regulating the sound waves, thereby reducing the interference with the airflow between the adjacent sound-emitting monomers 20, and further by adjusting the acoustic resistance range of the damping member, the product quality factor Q value of the sound module 100 can be controlled between 0.707-1.7.

[0042] The sound module 100 proposed by the utility model is designed with at least two ultra-thin sound units 20 placed side by side, and a damping member with a sound resistance range of 6-260MKS Rayls is set between two adjacent sound units 20. While reducing the thickness of the sound module 100, realizing the external speaker function, the private call function and the differentiated design of the two sound units 20, the damping member can be used to adjust the airflow to reduce the mutual interference between the airflows generated between the two adjacent sound units 20, so that the product Q value of the sound module 100 can be adjusted more simply, so that the product Q value is controlled within a reasonable range of 0.707-17, ensuring that the whole machine does not generate noise in the receiver mode, and at the same time the loudness fully meets the use requirements, thereby ensuring the experience of the end user.

[0043] In some embodiments, the damping member is a breathable mesh 31 , the inner wall of the housing 10 is provided with an annular groove, and the periphery of the breathable mesh 31 is disposed in the annular groove.

[0044] Specifically, both the first shell 11 and the second shell 12 are provided with embedding grooves, and an annular embedding groove is formed when they are assembled.

[0045] The breathable mesh 31 is mainly made of auxiliary damping material with acoustic filtering. By setting the periphery of the breathable mesh 31 in the annular groove, it can not only be relatively fixed with the shell 10, but also be made to stand upright between adjacent sounding units 20 and be opposite to all the sound outlet holes of two adjacent sounding units 20, thereby utilizing the acoustic resistance performance of the breathable mesh 31 to improve its ability to adjust the Q value of the product.

[0046] In some embodiments, the breathable mesh 31 includes a support frame and an acoustic mesh disposed on the support frame, and the support frame is disposed in an annular groove.

[0047] The shape of the support frame is the same as that of the annular groove, so that the acoustic mesh can be stably embedded in the annular groove. The acoustic mesh is fixed to the support frame to be disposed between two adjacent sound-emitting monomers 20 .

[0048] Acoustic mesh is a breathable mesh with adjustable sound resistance. The size of its sound resistance is determined by its material and the number of meshes on it. Generally speaking, acoustic mesh with a high mesh number has a larger sound resistance.

[0049] In practical applications, the mesh specifications of the acoustic mesh can be determined by simulating the Q value of the sound module 100 .

[0050] In some embodiments, the damping member is sound-absorbing cotton 32, and the compression ratio of the sound-absorbing cotton 32 is (2-10):1.

[0051] The sound-absorbing cotton 32 can compress itself to absorb sound waves, thereby achieving a sound-absorbing effect, reducing interference between two adjacent sound-emitting monomers 20, and facilitating adjustment of the Q value of the sound-emitting module 100. Specifically, the damping coefficient of the sound-absorbing cotton 32 can be adjusted by adjusting the compression ratio or material of the sound-absorbing cotton 32, thereby adjusting the Q value of the sound-emitting module 100, and controlling the Q value of the sound-emitting module 100 within a reasonable range of 0.707-17.

[0052] Generally speaking, the compression ratio of the sound-absorbing cotton 32 is (2-10):1, such as 5:1, 3:1, and the material of the sound-absorbing cotton 32 is polyurethane sound-absorbing cotton or melamine sound-absorbing cotton. Of course, other materials or compression ratios can also be used in this embodiment, which can be specifically determined according to the Q value simulation of the sound module 100.

[0053] In a specific embodiment of the present invention, the sound module 100 includes two sound units 20 arranged side by side, each sound unit 20 includes a first side and a second side arranged opposite to each other, the first side and the second side are both provided with sound holes, the first side is arranged opposite to the adjacent sound unit 20, and the damping member is arranged between the first sides of the two sound units 20.

[0054] Specifically, since there are two sounding units 20, and the first side of each sounding unit 20 is arranged opposite to the adjacent sounding unit 20, that is, the side of the sounding unit 20 opposite to the adjacent sounding unit 20 is the first side, arranging the damping element between the first sides of adjacent sounding units 20 can reduce the mutual interference of the airflow between the adjacent sounding units 20, thereby realizing the control of the Q value of the sound module 100.

[0055] In some embodiments, the sound module 100 includes three sound units 20 arranged side by side, each sound unit 20 includes a first side and a second side arranged opposite to each other, the first side and the second side of each sound unit 20 are provided with the sound outlet hole, and the first side and the second side of the sound unit 20 located in the middle position are provided with a damping member between the corresponding adjacent sound units 20.

[0056] The two sides of the sound unit 20 in the middle are spaced apart from the adjacent sound units 20, so that both sides will interfere with the adjacent sound units 20. By arranging the damping parts between the two sides of the sound unit 20 in the middle position and the corresponding adjacent sound units 20, the airflow interference between the middle sound unit 20 and the adjacent sound units 20 on both sides can be effectively reduced, which is convenient for controlling the Q value of the sound module 100.

[0057] In some embodiments, the sound unit 20 includes a frame and a vibration system and a magnetic circuit system connected to the frame. The vibration system includes a diaphragm assembly fixed to the frame and a voice coil connected to the diaphragm assembly at one end. The magnetic circuit system has a magnetic gap, and the other end of the voice coil is inserted into the magnetic gap. The diaphragm assembly, the frame and the magnetic circuit system cooperate to define a sound cavity, and the frame and part of the magnetic circuit system form an outer shell.

[0058] One side of the diaphragm assembly is connected to the voice coil, and the other side of the diaphragm assembly relative to the voice coil is enclosed with the housing 10 of the sound module 100 to form a front cavity 14. The voice coil is inserted in the magnetic gap of the magnetic circuit system, so that the diaphragm assembly can be driven to vibrate together when powered on, and the vibration sound waves on the front side of the diaphragm assembly are transmitted to the outside of the sound module 100 through the front cavity 14 and the connected sound hole 13, and the sound waves on the rear side of the diaphragm assembly, that is, in the sound cavity, are transmitted to the rear cavity 15 through the sound outlet hole provided on the housing, thereby improving the low-frequency effect of the sound module 100.

[0059] In some embodiments, the magnetic circuit system includes a magnetic yoke and a central magnetic portion and a side magnetic portion of the magnetic yoke, the central magnetic portion and the side magnetic portion are spaced apart to form a magnetic gap, the magnetic yoke includes a main body portion and a flange portion which is arranged at both ends of the main body portion and is bent and extended in a direction close to the diaphragm assembly, the central magnetic portion and the side magnetic portion are arranged on the main body portion, the flange portion is located on a side of the side magnetic portion away from the central magnetic portion, and the flange portion is provided with a sound outlet hole.

[0060] In some embodiments, the sound-emitting unit 20 further includes a breathable spacer, the frame, the breathable spacer and part of the magnetic circuit system form a shell, the breathable spacer and the magnetic circuit system are snap-fitted together, and the breathable spacer is provided with a sound outlet hole, so that the sound waves in the sound cavity can be transmitted through the sound outlet hole on the breathable spacer.

[0061] In some embodiments, the product quality factor Q value of the sound module 100 is between 0.707 and 1.7, so as to ensure that the whole device does not generate noise in the receiver mode, thereby improving the sound quality of the sound module 100.

[0062] In some embodiments, the sound module 100 includes two sound units 20, and the sound module 100 has a first working mode and a second working mode. In the first working mode, the vibration directions of the vibration systems of the two sound units 20 are the same. In the second working mode, the vibration directions of the vibration systems of the two sound units 20 are opposite.

[0063] Specifically, in the first working mode, since the vibration directions of the vibration systems of the two sound-emitting units 20 are the same, the phases of the sound waves transmitted outwardly by the sound-emitting units 20 through the sound outlet 13 can be superimposed on each other, that is, the intensity of the sound waves is increased. Therefore, it can be used in the sound external speaker mode to enhance the sound effect transmitted to the user's ears.

[0064] In the second working mode, since the vibration directions of the vibration systems of the two sound-emitting units 20 are opposite, that is, the sound waves emitted by the two sound-emitting units 20 form an acoustic dipole in the far field, the sound waves transmitted outward from the sound-emitting units 20 through the sound outlet 13 can be opposite in phase and cancel each other in the far field (for example, a position more than 20 cm away from the terminal), thereby reducing the transmission range of the sound waves, thereby preventing the user's conversation content from being heard by other people around. Therefore, it can be used in the receiver mode to achieve the effect of protecting privacy.

[0065] In some embodiments, the sound module 100 includes three sound units 20, and the sound module 100 has a first working mode and a second working mode. In the first working mode, the vibration directions of the vibration systems of the three sound units 20 are the same. In the second working mode, the vibration directions of the vibration systems of the sound units 20 located in the middle position are opposite to the vibration directions of the vibration systems of the sound units 20 located at both ends.

[0066] Similarly, in the first working mode, the phases of the sound waves transmitted outwardly by the sound-emitting unit 20 through the sound outlet 13 can be superimposed on each other, that is, the intensity of the sound waves can be increased, so it can be used in the sound external speaker mode to enhance the sound effect transmitted to the user's ears. In the second working mode, the sound waves transmitted outwardly by the sound-emitting unit 20 through the sound outlet 13 can be opposite in phase and cancel each other out in the far field (for example, a position more than 20 cm away from the terminal), so that the transmission range of the sound waves is reduced, thereby preventing the user's conversation content from being heard by other people around, so it can be used in the receiver mode to achieve the effect of protecting privacy.

[0067] The second aspect of the present invention also provides an electronic device, including the sound module 100 described in any one of the above. Specifically, the electronic device in this embodiment can be a mobile phone, a tablet or a smart wearable device. And the structure of the sound module 100 in the electronic device is specifically referred to the above embodiment. Since the electronic device in the utility model has all the technical features of the above embodiment, it also has at least the beneficial effects thereof.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A sound module, characterized in that: include: A housing having a receiving cavity formed therein; At least two sound-emitting units, at least two of which are accommodated side by side in the accommodation cavity, each of which comprises a shell and a sound cavity arranged in the shell, the shell is provided with a sound outlet connected to the sound cavity, and at least part of the sound outlet holes of two adjacent sound-emitting units are arranged opposite to each other; A damping member, the damping member is arranged in the housing, the damping member is arranged between two adjacent sound-emitting units, and at least part of the sound outlet holes of the two adjacent sound-emitting units are opposite to the damping member; Wherein, the damping member is a breathable member, and the acoustic resistance range of the damping member is 6-260 MKS Rayls.

2. The sound module according to claim 1, characterized in that: The damping member is a breathable mesh cloth, the inner wall of the shell is provided with an annular embedding groove, and the peripheral edge of the breathable mesh cloth is arranged in the annular embedding groove.

3. The sound module according to claim 2, characterized in that: The breathable mesh cloth comprises a supporting frame and an acoustic mesh cloth arranged on the supporting frame, and the supporting frame is arranged in the annular embedding groove.

4. The sound module according to claim 1, characterized in that: The damping member is sound-absorbing cotton, and the compression ratio of the sound-absorbing cotton is (2-10): 1; And / or, the sound-absorbing cotton is polyurethane sound-absorbing cotton or melamine sound-absorbing cotton.

5. The sound module according to claim 1, characterized in that: The sound module includes two sound monomers arranged side by side, each of the sound monomers includes a first side and a second side arranged opposite to each other, the first side and the second side are both provided with the sound outlet, the first side is arranged opposite to the adjacent sound monomer, and the damping member is arranged between the first sides of the two sound monomers; Alternatively, the sound module includes three sound units arranged side by side, each of the sound units includes a first side and a second side arranged opposite to each other, the first side and the second side of each sound unit are provided with the sound outlet hole, and the first side and the second side of the sound unit located in the middle position are provided with the damping member between the corresponding adjacent sound units.

6. The sound module according to claim 1, characterized in that: The sound-emitting unit includes a frame and a vibration system and a magnetic circuit system connected to the frame. The vibration system includes a diaphragm assembly fixed to the frame and a voice coil connected to the diaphragm assembly at one end. The magnetic circuit system has a magnetic gap. The other end of the voice coil is inserted into the magnetic gap. The diaphragm assembly, the frame and the magnetic circuit system cooperate to define the sound cavity. The frame and part of the magnetic circuit system form the outer shell.

7. The sound module according to claim 6, characterized in that: The magnetic circuit system comprises a magnetic yoke and a central magnetic portion and a side magnetic portion of the magnetic yoke, wherein the central magnetic portion and the side magnetic portion are spaced to form the magnetic gap, the magnetic yoke comprises a main body portion and flange portions which are arranged at both ends of the main body portion and are bent and extended toward the direction close to the diaphragm assembly, the central magnetic portion and the side magnetic portion are arranged on the main body portion, the flange portion is located on a side of the side magnetic portion away from the central magnetic portion, and the flange portion is provided with the sound outlet hole; Alternatively, the sound-emitting unit further includes a breathable spacer, the frame, the breathable spacer and part of the magnetic circuit system form the outer shell, the breathable spacer is snap-fitted with the magnetic circuit system, and the breathable spacer is provided with the sound outlet hole.

8. The sound module according to any one of claims 1 to 7, characterized in that: The product quality factor Q value of the sound module is between 0.707 and 1.

7.

9. The sound module according to any one of claims 1 to 7, characterized in that: The sound module includes two sound monomers, and the sound module has a first working mode and a second working mode. In the first working mode, the vibration directions of the vibration systems of the two sound monomers are the same, and in the second working mode, the vibration directions of the vibration systems of the two sound monomers are opposite; Or, the sound module includes three sound units, and the sound module has a first working mode and a second working mode. In the first working mode, the vibration directions of the vibration systems of the three sound units are the same. In the second working mode, the vibration direction of the vibration system of the sound unit located in the middle position is opposite to the vibration direction of the vibration system of the sound units located at both ends.

10. An electronic device, characterized in that: A sound module comprising any one of claims 1-9.

Citation Information

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