CN1568070A - Planar series magnetic circuit double sided sounder - Google Patents
Planar series magnetic circuit double sided sounder Download PDFInfo
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- CN1568070A CN1568070A CN 03145622 CN03145622A CN1568070A CN 1568070 A CN1568070 A CN 1568070A CN 03145622 CN03145622 CN 03145622 CN 03145622 A CN03145622 A CN 03145622A CN 1568070 A CN1568070 A CN 1568070A
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Abstract
The invention discloses a plane series connected magnetic circuit double side sounder. It includes: box shell where the plane series connected magnetic circuit is located in; the first shaking section that forms the first sound by the magnetic field in the first working magnetic interstice when the component of the first shaking section is impressed the first external sonic signal; the second shaking section that forms the second sound by the magnetic field in the second working magnetic interstice when the component of the second shaking section is impressed the second external sonic signal; the first external sonic signal and the second external sonic signal is impressed by the connector themselves. The sounder includes receiver and loudspeaker. One side is the loudspeaker that can send out music, and the other side is receiver that can deliver speech sound. The invention can satisfy the rigor request of the microminiaturization and high efficiency and multi-function of the communication electro-acoustic component as well as other special request of dense structure, low flux leakage, high sensitivity of the electro-acoustic component.
Description
Technical field
The present invention relates to a kind of microphone device, particularly relate to and adopted plane series circuit, tow sides all to be provided with the work magnetic gap and the two-sided acoustical generator of vibrating mass independently.
Background technology
Mobile phone, IP phone, micro terminal equipment, palmtop computer, miniature device and the small wireless telephone set of transmitting and receiving had both needed receiver in order to the reduction voice, also needed to arouse user's sound-producing device-loud speaker or buzzer.
Generally speaking, transmitting the receiver of voice, broadcast the buzzer of buzz, is to adopt separately independently two devices.But from started in the recent period be the ringing tone of mobile phone with the speaker playback polyphonic ring tone since, the tinkle of bells upsurge gets out of hand since then.For making beautiful reproducing music, mobile communication product manufacturing enterprise reverses end for end immediately, no longer broadcasts buzzer with buzzer mostly in the mobile phone, and use broadband instead, powerful Microspeaker is broadcasted 40 chords or music.For adapting to the miniaturization trend of mobile phone, IP phone, the complete machine industry has been used various tricks, save the space by every means, the space of leaving electro-acoustic element for is more and more littler, performance requirement is but more and more higher, has both required electro-acoustic element to do for a short time, also requires to use one more, two unifications, promptly the two-sided microphone device that integrates of receiver and loud speaker has just arisen at the historic moment.This class multifunction device both can be made receiver, also wanted to do loud speaker, buzzer usefulness; Also require loudspeaker enclosure height, energy consumption low for saving electric energy.
At present, this class multifunction micro electro-acoustic element that people are known has plenty of the function that realizes both making receiver, can also make loud speaker with one group of vibrating mass; Though adopt this class device can realize miniaturization, multi-functional, very important problem is: the receiver transmission be voice, the user is near audition in one's ear; And loud speaker is broadcasted is ringing tone or music, distant apart from people's ear, and both acoustical behavioies require widely different.Allow a vibrating mass realize different performance requirements, undertake to do what is apparently beyond one's ability a little really, often attend to one thing and lose sight of another, can not be satisfactory to both parties; And, the complete machine manufacturing industry when using the multifunction device of single vibration parts, the design of its complete machine, installation, and realize from the loud speaker ringing condition also cumbersome to the conversion of the receiver state that transmits voice.
Publication number is that the application for a patent for invention of CN1340987A discloses a kind of diprosopia speaker, and it can by oscillating plate separately, realize loud speaker and receiver function respectively effectively in the shared common magnetic circuit formation portion that is arranged in the framework.Diprosopia speaker comprises cylinder-shaped frame; Magnetic circuit formation portion; First vibration section; Second vibration section, above-mentioned first vibration section and second vibration section are that the center relatively is arranged on the same central shaft with above-mentioned magnetic circuit formation portion.
Publication number is that CN1384693A discloses a kind of loud speaker and mobile terminal device, and this loud speaker comprises first magnet; Be set up so that center on second magnet of first magnet; Be used to connect a yoke of first magnet and second magnet; First voice coil; Second voice coil; Be connected to first vibrating membrane of first voice coil; Second vibrating membrane of second voice coil relatively is set and is connected to respect to first magnet and first vibrating membrane; Be arranged on first magnetic sheet between first vibrating membrane and first magnet, and be arranged on second magnetic sheet between second vibrating membrane and second magnet, wherein first voice coil is set in first magnetic gap between the yoke of first magnetic sheet, and second voice coil is set in second magnetic gap between second magnetic sheet and the yoke.
Though above several diprosopia speakers be provided with two vibrating mass, can avoid the some shortcomings of the single or double loud speaker of single vibration parts, but magnetic circuit still is traditional interior magnetic or outer magnetic magnetic circuit.The space availability ratio of internal magnetic type magnetic circuit is low, insufficient sensitivity is high, and the leakage field of external magnetic type magnetic circuit is big to wait the drawback of self inherence, makes its structural design and application be subjected to many qualifications.
By the applicant application, number of patent application is 03115016.0 to disclose a kind of plane series circuit, is a kind of efficient magnetic circuit brand-new, that combine the advantage of internal magnetic type magnetic circuit and external magnetic type magnetic circuit.It is formed first magnetic circuit by first magnet, the first magnetic conduction bottom crown of the first magnetic conduction top crown, its upper stack and forms portion; Form second magnetic circuit by second magnet, the second magnetic conduction bottom crown of the second magnetic conduction top crown, its upper stack and form portion; The first magnetic circuit formation portion is arranged at the peripheral of the second magnetic circuit formation portion and is provided with the magnetic gap of regulation; First magnet is opposite with the second magnet polarity.Magnetic field in two magnetic gap of this magnetic circuit is formed by stacking by the magnetic line of force that first magnet and second magnet send, thereby magnetic field intensity strengthens greatly, and this magnetic structure is compact to design simultaneously, and leakage field is little.Use electricity, machine, the sound transducing head conversion efficiency height of this magnetic circuit, sensitivity improves greatly.
Summary of the invention
The plane of the present invention two-sided acoustical generator of series circuit has adopted efficient plane series circuit and tow sides to be provided with work magnetic gap and vibrating mass independently, and loud speaker and receiver function are realized by vibrating mass separately.
Series circuit two-sided acoustical generator in plane of the present invention comprises: the box shell; Be provided with the plane series circuit in the box shell: the first magnetic circuit combination section is combined by the first annular magnetic conduction top crown, the first annular magnet, the first annular magnetic conduction bottom crown, it is the S utmost point that the magnetic polarity of the first annular magnet is set to the upper surface, and the lower surface is the N utmost point; The second magnetic circuit combination section is combined by the second circular magnetic conduction top crown, the second circular magnet, the second circular magnetic conduction bottom crown; It is the N utmost point that the magnetic polarity of the second circular magnet is set to the upper surface, and the lower surface is the S utmost point; First vibration section: the lower surface of the magnetic circuit formation portion of the first magnetic circuit combination section and the stack of the second magnetic circuit combination section is provided with the first work magnetic gap, the parts of first vibration section are when applying first external audio signal of regulation, the action of a magnetic field by in the first work magnetic gap produces first sound; Second vibration section: the upper surface of the magnetic circuit formation portion of the first magnetic circuit combination section and the stack of the second magnetic circuit combination section is provided with the second work magnetic gap, the parts of second vibration section are when applying second external audio signal of regulation, the action of a magnetic field by in the second work magnetic gap produces second sound; The first above-mentioned external audio signal and second external audio signal terminal by separately respectively apply.
The present invention adopts plane series circuit, tow sides to be provided with independently vibrating mass, this invention has cracked the several to contradiction of mutual intersection, mutual restriction well: promptly microminiaturized with bear powerful contradiction, microminiaturized and wide band contradiction, microminiaturized and highly sensitive contradiction is born contradiction high-power and high sensitivity, the little distortion factor.Simultaneously, because tow sides are provided with independently vibrating mass, one of them vibrating mass is used for receiver, realizes transmitting voice functions; Another vibrating mass then is used for loud speaker, realizes broadcasting the function of ringing tone or music.The present invention can satisfy Miniaturized Communications complete machine (as mobile phone etc.) to microminiaturization, high-effect, the multi-functional harsh requirement of communication electro-acoustic element, also can satisfy the special requirement that other requires little, highly sensitive multimedia computer, IP terminal or other all kinds of complete machines of electro-acoustic element compact conformation, leakage field.The present invention has solved preferably that the microminiaturization of electro-acoustic element, high-effect, multipurpose etc. are intersected mutually, many difficult problems of mutual restriction, has significant results:
1. the plane series circuit is the combination of internal magnetic type magnetic circuit and external magnetic type magnetic circuit, and the magnetic field among the magnetic gap is to be formed by the magnetic line of force superposition that first magnet and second magnet send, thereby its magnetic field intensity is strengthened greatly.Under the same conditions, the actuating force of generation or sound can be bigger, and perhaps the induced electromotive force of Chan Shenging is higher.That is to say, adopt the electricity, machine, sound conversion efficiency of the transducer of plane series circuit efficient height than traditional transducers.
2. the present invention is provided with the work magnetic gap at the tow sides of plane series circuit, and the setting of tow sides work magnetic gap size can be according to the desired acoustic characteristic of this working face, as bears watt level, and the height of sensitivity is determined.
3. the present invention is provided with independently vibrating mass at the tow sides of plane series circuit, its acoustical parameter can be set according to the desired acoustic characteristic of this vibrating mass, be used for broadcasting ringing tone as one group of vibrating mass, as music, chord or buzzer etc., its frequency response characteristic, bear that performance index such as power, the distortion factor are can be on request independent to be set; Another group vibrating mass is used for transmitting voice messaging, its frequency response characteristic can be fully according to the requirement setting of the definition of transmission voice, fidelity, intelligibility; Perhaps one group of vibrating mass is used for broadcasting bass, another group vibrating mass is used for broadcasting high pitch, and both combinations are broadcasted frequency band with broadening; Also can be arranged to one side do receiver or loud speaker with-electrical signal conversion is become acoustical signal, another side do transmitter or microphone with-acoustical signal is converted to the signal of telecommunication.
4. receiver of the present invention, loudspeaker wiring terminal are independent separately, and connected mode and single receiver, loud speaker are the same, convenient, flexible, and entire machine design, function change, easy to install.
5. receiver of the present invention, loud speaker one, structural design has bigger flexibility: receiver unit and loudspeaker unit can be cylindrical other shape that also can be; The big I of voice coil loudspeaker voice coil requires freely to design according to acoustical behavior; Simultaneously can save the space, save material.
Description of drawings
Fig. 1 is the schematic diagram of plane of the present invention series circuit;
Fig. 2 is one embodiment of the present invention structural representation;
Fig. 3 is the structural representation of first each unit construction of magnetic circuit combination section in Fig. 1 execution mode;
Fig. 4 is the vertical view of Fig. 3;
Fig. 5 is the upward view of Fig. 3;
Fig. 6 is the structural representation of parts shown in Figure 3 and the combination of box shell;
Fig. 7 is the vertical view of Fig. 6;
Fig. 8 is the upward view of Fig. 7;
Fig. 9 is the structural representation of parts shown in Figure 6 and second each unit construction of magnetic circuit combination section;
Figure 10 is the vertical view of Fig. 9;
Figure 11 is the upward view of Fig. 9.
Embodiment
An embodiment of the two-sided acoustical generator of plane series circuit of the present invention as shown in Figure 1, the mentality of designing of this embodiment is: receiver, loud speaker one.Simultaneously (top) is loud speaker, this group vibrating mass is used for broadcasting ringing tone, as music, chord or buzzer etc., its frequency response characteristic, bear performance index such as power, the distortion factor and can design on request, another side (following) is a receiver, one group of independence vibrating mass is used for transmitting voice messaging, its frequency response characteristic can be fully according to the requirement setting of the definition of transmitting voice, fidelity, intelligibility.
As Fig. 2, series circuit two-sided acoustical generator in plane comprises box shell 50, is made of circle framework 51 and central bracing frame 52; Be provided with the plane series circuit in the box shell 50: the first magnetic circuit combination section 30 is combined by the first annular magnetic conduction top crown 31, the first annular magnet 32, the first annular magnetic conduction bottom crown 33, it is the S utmost point that the magnetic polarity of the first annular magnet 32 is set to the upper surface, and the lower surface is the N utmost point; The second magnetic circuit combination section 40 is combined by second circular magnetic conduction top crown 41, second circular magnet 42, the second circular magnetic conduction bottom crown 43; It is the N utmost point that the magnetic polarity of the second circular magnet 42 is set to the upper surface, and the lower surface is the S utmost point; The lower surface of the magnetic circuit formation portion of the first magnetic circuit combination section 30 and 40 stacks of the second magnetic circuit combination section is provided with the first work magnetic gap 60; The upper surface of the magnetic circuit formation portion of the first magnetic circuit combination section 30 and 40 stacks of the second magnetic circuit combination section is provided with the second work magnetic gap 70; The parts of 10: the first vibration sections 10, first vibration section are combined by voice coil loudspeaker voice coil 11 and vibrating membrane 12, and when applying first external audio signal of regulation, the action of a magnetic field by in the first work magnetic gap 60 produces first sound; The parts of 20: the second vibration sections 20, second vibration section are combined by voice coil loudspeaker voice coil 21 and vibrating membrane 22, and when applying second external audio signal of regulation, the action of a magnetic field by in the second work magnetic gap 70 produces second sound; The first above-mentioned external audio signal and second external audio signal terminal by separately respectively apply.
Embodiment is:
1. at first, the first annular magnetic conduction top crown 31, the first annular magnet 32, the first annular magnetic conduction bottom crown 33 are bonded together, it is the S utmost point that the magnetic polarity that forms the first magnetic circuit combination section, 30, the first annular magnets 32 is set to the upper surface, and the lower surface is the N utmost point.See Fig. 3-Fig. 5.
2. in the box shell of being made up of circle framework 51, central bracing frame 52 50 that the first magnetic circuit combination section 30 is installed to that injection moulding forms, box shell 50 is supporters of entire device.
3. be provided with frequency characteristic acoustics regulating tank 90, adjustment hole 100 on the circle framework 51 of box shell 50, on adjustment hole 100, be pasted with acoustic damping material 110.
4. be provided with frequency characteristic acoustics adjustment hole 80 on the bracing frame 52 of centre among the box shell 50, pasted binding post 120 on the platform of the circle framework 51 of box shell 50, also be provided with crossed beam trunking on the circle framework 51.
5. second circular magnetic conduction top crown 41, second circular magnet 42, the second circular magnetic conduction bottom crown 43 is bonded together, it is the N utmost point that the magnetic polarity that forms the second magnetic circuit group portion, 40, the second circular magnets 42 is set to the upper surface, and the lower surface is the S utmost point.See Fig. 6-Fig. 8.
6. the second magnetic circuit combination section 40 is sticked on the top of central bracing frame 52 at the middle part of the box shell 50 that contains the first magnetic circuit combination section 30, guarantee the first work magnetic gap 60 evenly and the second work magnetic gap 70 even, see Fig. 9-Figure 11.
7. the middle part of the first annular magnetic conduction bottom crown 33 is provided with a plurality of apertures, and the some of them aperture is as acoustics adjustment hole 80, and other apertures are entreated bracing frame 52 among cooperating box shell 50, to increase bond strength.
8. first vibration section 10 is combined by voice coil loudspeaker voice coil 11 and vibrating membrane 12, and vibrating membrane 12 is glued at circular frame 51 belows of box shell 50, and voice coil loudspeaker voice coil 11 extend in the first work magnetic gap 60.
9. second vibration section 20 is combined by voice coil loudspeaker voice coil 21 and vibrating membrane 22, and vibrating membrane 22 is glued at circular frame 51 tops of box shell 50, and voice coil loudspeaker voice coil 21 extend in the second work magnetic gap 70.
10. the lead-out wire with the voice coil loudspeaker voice coil 11 of first vibration section 10 is welded on the first winding point of binding post 120 through the crossed beam trunking of box shell 50, when the first winding point of binding post 120 leads to audio electrical signal, audio electrical signal flows in the voice coil loudspeaker voice coil 11 of first vibration section 10, voice coil loudspeaker voice coil 11 is subjected to the effect in magnetic field in the gap 60 and moves, and drives vibrating membrane 12 vibration soundings of first vibration section 10.
11. the lead-out wire of the voice coil loudspeaker voice coil 21 of second vibration section 20 is welded on the second winding point of binding post 120 through box shell 50 crossed beam trunkings.When the second winding point of binding post 120 led to audio electrical signal, audio electrical signal flowed in the voice coil loudspeaker voice coil 21 of second vibration section 20, and voice coil loudspeaker voice coil 21 is subjected to the effect in magnetic field in the gap 70 and moves, and drives vibrating membrane 22 vibration soundings of second vibration section 20.
12. between first vibration section 10 and second vibration section 20, be provided with frequency characteristic acoustics adjustment hole 80 in centre among the box shell 50 on the bracing frame 52, mainly in order to regulate the audio frequency characteristics of receiver.
13. the outside of first vibration section 10 is covered with lower cover 130, is bonded in the bottom of the round framework 51 of box shell 50, lower cover 130 is provided with phonate hole.
14. the outside of second vibration section 20 is covered with loam cake 140, is bonded in the top of the round framework 51 of box shell 50, loam cake 140 is provided with phonate hole.Lower cover 130, loam cake 140 existing safeguard functions, also the acoustic characteristic of scalable device also has decoration functions;
15.150 be flexible rubber cushion, stick on the lower cover 130 receiver sounding face and complete machine driving fit when guaranteeing to install;
16.160 be flexible rubber cushion, stick on the loam cake 140 loud speaker sounding face and complete machine driving fit when guaranteeing to install.
Technical staff with certain professional knowledge can suitably be provided with various (electricity, machine, sound) parameter of device, to obtain the satisfied receiver or the acoustic characteristic of loud speaker or transmitter.
Claims (9)
1. the two-sided acoustical generator of plane series circuit comprises: the box shell; Be provided with the plane series circuit in the box shell: the first magnetic circuit combination section is combined by the first annular magnetic conduction top crown, the first annular magnet, the first annular magnetic conduction bottom crown, it is the S utmost point that the magnetic polarity of the first annular magnet is set to the upper surface, and the lower surface is the N utmost point; The second magnetic circuit combination section is combined by the second circular magnetic conduction top crown, the second circular magnet, the second circular magnetic conduction bottom crown; It is the N utmost point that the magnetic polarity of the second circular magnet is set to the upper surface, and the lower surface is the S utmost point; First vibration section: the lower surface of the magnetic circuit formation portion of the first magnetic circuit combination section and the stack of the second magnetic circuit combination section is provided with the first work magnetic gap, the parts of first vibration section are when applying first external audio signal of regulation, the action of a magnetic field by in the first work magnetic gap produces first sound; Second vibration section: the upper surface of the magnetic circuit formation portion of the first magnetic circuit combination section and the stack of the second magnetic circuit combination section is provided with the second work magnetic gap, the parts of second vibration section are when applying second external audio signal of regulation, the action of a magnetic field by in the second work magnetic gap produces second sound; The first above-mentioned external audio signal and second external audio signal terminal by separately respectively apply.
2. the two-sided acoustical generator of a kind of plane series circuit according to claim 1 is characterized in that: described box shell (50) is made up of circle framework (51), central bracing frame (52).
3. the two-sided acoustical generator of a kind of plane series circuit according to claim 2 is characterized in that: be provided with frequency characteristic acoustics regulating tank (90) and adjustment hole (100) on the described round framework (51).
4. the two-sided acoustical generator of a kind of plane series circuit according to claim 2 is characterized in that: be provided with frequency characteristic acoustics adjustment hole (80) on the described central bracing frame (52).
5. the two-sided acoustical generator of a kind of plane series circuit according to claim 1, it is characterized in that: the parts of described first vibration section (10) are combined by voice coil loudspeaker voice coil (11) and vibrating membrane (12), vibrating membrane (12) is located at circular frame (51) below of box shell (50), and voice coil loudspeaker voice coil (11) extend in the first work magnetic gap (60).
6. the two-sided acoustical generator of a kind of plane series circuit according to claim 1, it is characterized in that: the parts of described second vibration section (20) are combined by voice coil loudspeaker voice coil (21) and vibrating membrane (22), vibrating membrane (22) is located at circular frame (51) top of box shell (50), and voice coil loudspeaker voice coil (21) extend in the first work magnetic gap (70).
7. the two-sided acoustical generator of a kind of plane series circuit according to claim 2 is characterized in that: the bottom of the round framework (51) of described box shell (50) is provided with the lower cover (130) that has phonate hole.
8. the two-sided acoustical generator of a kind of plane series circuit according to claim 2 is characterized in that: the top of the round framework (51) of described box shell (50) is provided with the loam cake (140) that has phonate hole.
9. the two-sided acoustical generator of a kind of plane series circuit according to claim 1, it is characterized in that: the middle part of the described first annular magnetic conduction bottom crown (33) is provided with a plurality of apertures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03145622 CN1568070A (en) | 2003-06-30 | 2003-06-30 | Planar series magnetic circuit double sided sounder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03145622 CN1568070A (en) | 2003-06-30 | 2003-06-30 | Planar series magnetic circuit double sided sounder |
Publications (1)
| Publication Number | Publication Date |
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| CN1568070A true CN1568070A (en) | 2005-01-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03145622 Pending CN1568070A (en) | 2003-06-30 | 2003-06-30 | Planar series magnetic circuit double sided sounder |
Country Status (1)
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| CN (1) | CN1568070A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106792394A (en) * | 2017-01-24 | 2017-05-31 | 范邱燕 | A kind of two-way loudspeaker and stereo set |
| CN109040920A (en) * | 2018-07-26 | 2018-12-18 | 维沃移动通信有限公司 | A kind of vocal structure and terminal |
| CN109168099A (en) * | 2018-09-28 | 2019-01-08 | 维沃移动通信有限公司 | A kind of sounding component and electronic equipment |
| CN109348004A (en) * | 2018-10-09 | 2019-02-15 | 安庆市汇智科技咨询服务有限公司 | A kind of mobile phone |
| CN109511029A (en) * | 2018-11-15 | 2019-03-22 | 维沃移动通信有限公司 | Receiver unit and mobile device |
| CN111343542A (en) * | 2020-03-05 | 2020-06-26 | 瑞声科技(新加坡)有限公司 | Loudspeaker box |
| CN114554369A (en) * | 2021-04-01 | 2022-05-27 | 歌尔股份有限公司 | Sound production device and electronic equipment |
| WO2024045660A1 (en) * | 2022-08-31 | 2024-03-07 | 荣耀终端有限公司 | Loudspeaker module and electronic device |
-
2003
- 2003-06-30 CN CN 03145622 patent/CN1568070A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106792394A (en) * | 2017-01-24 | 2017-05-31 | 范邱燕 | A kind of two-way loudspeaker and stereo set |
| CN109040920A (en) * | 2018-07-26 | 2018-12-18 | 维沃移动通信有限公司 | A kind of vocal structure and terminal |
| US11343615B2 (en) | 2018-07-26 | 2022-05-24 | Vivo Mobile Communication Co., Ltd. | Sound producing structure and terminal |
| CN109168099A (en) * | 2018-09-28 | 2019-01-08 | 维沃移动通信有限公司 | A kind of sounding component and electronic equipment |
| CN109348004A (en) * | 2018-10-09 | 2019-02-15 | 安庆市汇智科技咨询服务有限公司 | A kind of mobile phone |
| CN109511029A (en) * | 2018-11-15 | 2019-03-22 | 维沃移动通信有限公司 | Receiver unit and mobile device |
| US11799506B2 (en) | 2018-11-15 | 2023-10-24 | Vivo Mobile Communication Co., Ltd. | Receiver apparatus and mobile device |
| CN111343542A (en) * | 2020-03-05 | 2020-06-26 | 瑞声科技(新加坡)有限公司 | Loudspeaker box |
| CN111343542B (en) * | 2020-03-05 | 2021-08-10 | 瑞声科技(新加坡)有限公司 | Loudspeaker box |
| CN114554369A (en) * | 2021-04-01 | 2022-05-27 | 歌尔股份有限公司 | Sound production device and electronic equipment |
| CN114554369B (en) * | 2021-04-01 | 2023-11-21 | 歌尔股份有限公司 | Sound producing device and electronic equipment |
| WO2024045660A1 (en) * | 2022-08-31 | 2024-03-07 | 荣耀终端有限公司 | Loudspeaker module and electronic device |
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