CN207354575U - Loudspeaker enclosure - Google Patents
Loudspeaker enclosure Download PDFInfo
- Publication number
- CN207354575U CN207354575U CN201721246741.3U CN201721246741U CN207354575U CN 207354575 U CN207354575 U CN 207354575U CN 201721246741 U CN201721246741 U CN 201721246741U CN 207354575 U CN207354575 U CN 207354575U
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- CN
- China
- Prior art keywords
- leak
- loudspeaker enclosure
- vibrating diaphragm
- loudspeaker
- side wall
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model provides a kind of loudspeaker enclosure, including with housing the housing of cavity, be contained in the collecting cavity and loudspeaker monomer with vibrating diaphragm, the collecting cavity is divided into ante-chamber and back cavity by the vibrating diaphragm, the ante-chamber includes the preceding operatic tunes and the connection preceding operatic tunes and extraneous passage of speaking, the loudspeaker monomer further includes the leak arranged on the vibrating diaphragm and the connection ante-chamber and the back cavity, and the leak is arranged on side of the vibrating diaphragm away from the passage of speaking.Compared with correlation technique, loudspeaker enclosure provided by the utility model solves intermediate frequency distortion and is also easy to produce the technical problem of high-frequency noise.
Description
【Technical field】
It the utility model is related to electroacoustic transduction field, more particularly to a kind of loudspeaker enclosure.
【Background technology】
With the fast development of science and technology, the popularity rate of audio frequency apparatus is higher and higher, and requirement of the people to audio frequency apparatus is not only
The broadcasting of video is only limitted to, more requires to propose the reliability of audio frequency apparatus more require.The especially arrival in 4G epoch, it is mobile
Multimedia technology also develops therewith, and many audio frequency apparatuses have a variety of amusement functions, as video playing, digital vedio recording, game,
GPS navigation etc., the requirement of its broadcasting tonequality to audio frequency apparatus are also higher and higher.
Loudspeaker enclosure is mainly used for the broadcasting of audio signal as a kind of common electronic component.When loudspeaker enclosure
When sound mouth has larger resistance or sound tube road to have larger damping, such as complete machine environment, the intermediate frequency distortion of loudspeaker enclosure can raise,
The listening quality of loudspeaker enclosure is seriously affected, simultaneously because the ante-chamber resonance of loudspeaker enclosure, can amplify radio-frequency component and high frequency is made an uproar
Sound, in correlation technique, for high frequency noise caused by reducing the ante-chamber intermediate frequency distortion of loudspeaker enclosure and ante-chamber resonance, is usually being raised
Leak is opened up on the housing of sound device case to balance the air pressure inside loudspeaker enclosure to improve intermediate frequency distortion, avoid ante-chamber resonance,
But can so cause the structure of loudspeaker enclosure excessively complicated, improve its difficulty of processing.
Therefore, it is necessary to providing a kind of new loudspeaker enclosure solves above-mentioned technical problem.
【Utility model content】
The purpose of this utility model is to provide a kind of loudspeaker enclosure for improving intermediate frequency distortion and reducing high-frequency noise.
The utility model provides a kind of loudspeaker enclosure, including with housing the housing of cavity, be contained in the collecting cavity
And the loudspeaker monomer with vibrating diaphragm, the collecting cavity is divided into ante-chamber and back cavity by the vibrating diaphragm, before the ante-chamber includes
The operatic tunes and the connection preceding operatic tunes and extraneous passage of speaking, the loudspeaker monomer are further included arranged on the vibrating diaphragm and connection institute
The leak of ante-chamber and the back cavity is stated, the leak is arranged on side of the vibrating diaphragm away from the passage of speaking.
Preferably, the area of the leak arrives 0.05mm for 0.0012。
Preferably, the quantity of the leak is one, and the leak is rounded or oval or track type.
Preferably, the loudspeaker monomer is further included on the vibrating diaphragm to cover the ventilative interval of the leak
Part.
Preferably, the ventilative distance piece is made of sound-resistance material.
Preferably, the housing includes roof, bottom wall and the side wall of the connection roof and bottom wall, and the passage of speaking passes through
The side wall is worn, the preceding operatic tunes is formed between the vibrating diaphragm and the roof, institute is formed between the vibrating diaphragm and the bottom wall
State back cavity.
Preferably, the side wall includes the first side wall set along long axis direction and second sidewall and the first side of connection
3rd side wall of wall and second sidewall, the passage of speaking run through the first side wall, the leak to the second sidewall
Distance be less than the leak to the first side wall distance.
Preferably, the loudspeaker monomer further includes frame, the vibrating diaphragm include body equipped with the leak and
Stretch out from the body and be formed and secured to the fixed part of the frame, the body includes being equipped with the leak
Top dome portion and the bending part of the fixed part is extended to from top dome portion outward bending.
Preferably, the body further includes the reinforcing plate for being stacked at the top dome portion, and the leak sequentially passes through institute
State top dome portion and the reinforcing plate.
Preferably, the body includes top dome portion, hole and is stacked at described by hitting of being enclosed of the top dome portion
Top dome portion is to cover the reinforcing plate in the hole of hitting, and the leak runs through the reinforcing plate, and the leak is cut described
In the range of mesoporous.
Compared with correlation technique, loudspeaker enclosure provided by the utility model has the advantages that：
The loudspeaker enclosure includes the housing with collecting cavity, is contained in the collecting cavity and raising one's voice with vibrating diaphragm
The collecting cavity is divided into ante-chamber and back cavity by device monomer, the vibrating diaphragm, and the loudspeaker monomer is further included to shake arranged on described
The leak of film and the connection ante-chamber and the back cavity.The setting of the leak, can not only be effectively improved described raise one's voice
The intermediate frequency distortion of device case, and can effectively weaken the radio-frequency component and high-frequency noise of the generation of ante-chamber resonance, it is further, described
Leak is effective to balance back cavity air pressure by connecting ante-chamber and back cavity, without in addition opening balancing orifice in back cavity, ensures to raise one's voice
The closed and uniformity of device case shape.Leak be arranged far from the speaking side of passage is flat when can then ensure diaphragm oscillations
Weighing apparatus, so as to fulfill more preferable acoustical behavior.
【Brief description of the drawings】
Fig. 1 is one exploded view of loudspeaker enclosure embodiment provided by the utility model；
Fig. 2 is the structure diagram after the assembling of loudspeaker enclosure shown in Fig. 1；
Fig. 3 is cut-away view of the loudspeaker enclosure along line A-A shown in Fig. 2；
Fig. 4 is the enlarged drawing of the part B of loudspeaker enclosure shown in Fig. 3；
Fig. 5 is the sectional view of the loudspeaker monomer of loudspeaker enclosure embodiment two provided by the utility model；
Fig. 6 is the sectional view of the loudspeaker monomer of loudspeaker enclosure embodiment three provided by the utility model；
Fig. 7 be loudspeaker enclosure provided by the utility model total harmonic distortion curve and correlation technique loudspeaker enclosure it is total humorous
The comparison diagram of wave distortion curve；
Fig. 8 is that the frequency response curve of loudspeaker enclosure provided by the utility model and the frequency of correlation technique loudspeaker enclosure are rung
Answer the comparison diagram of curve；
Fig. 9 is humorous for the higher hamonic wave curve of loudspeaker enclosure provided by the utility model and the high order of correlation technique loudspeaker enclosure
The comparison diagram of wave profile.
【Embodiment】
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model some embodiments, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are without making creative work
All other embodiments obtained, shall fall within the protection scope of the present invention.
Embodiment one
Fig. 1, Fig. 2, Fig. 3 and Fig. 4 are please referred to, wherein, Fig. 1 is the loudspeaker of embodiment one provided by the utility model
The stereochemical structure decomposing schematic representation of case, Fig. 2 are the structure diagram after the assembling of loudspeaker enclosure shown in Fig. 1, and Fig. 3 is edge shown in Fig. 2
The cross-sectional view of line A-A, Fig. 4 are part B enlarged drawing shown in Fig. 3.Loudspeaker enclosure 100 includes housing 1 and loudspeaker list
Body 3, housing 1 include collecting cavity 11, the first housing 13 and the second housing 15, the first housing 13 and assemble to be formed with the second housing 15
House cavity 11, loudspeaker monomer 3 be contained in house cavity 11 in, in the first housing 13 and the second housing 15 it is at least one including
Around the side wall of receiving space 11, specifically in the present embodiment, the first housing 13 includes roof 131 and is bent from roof 131
The side wall 132 of extension；Second housing 15 is connected on the bottom wall on side wall for lid.In the present embodiment, housing 1 is strip knot
Structure, side wall 132 include the first side wall 1321 set along long axis direction and second sidewall 1322 and connection the first side wall 1321
With the 3rd side wall 1323 of second sidewall 1322.
Loudspeaker monomer 3 includes frame 31, vibrating diaphragm 33, magnetic circuit system 35, voice coil loudspeaker voice coil 37, leak 38 and ventilative distance piece
39, vibrating diaphragm 33 is fixedly arranged on frame 31, and magnetic circuit system 35 is contained in frame 31, and voice coil loudspeaker voice coil 37 is connected with vibrating diaphragm 33 and by magnetic circuit system
35 driving voice coil loudspeaker voice coils 37 are vibrated to drive 33 vibration sounding of vibrating diaphragm, and vibrating diaphragm 33 is divided into ante-chamber 111 and back cavity by cavity 11 is housed
113, ante-chamber 111 includes the operatic tunes 1111 and extraneous passage 1113 of speaking before the preceding operatic tunes 1111 and connection.In the present embodiment,
Passage of speaking is integrally formed with the first housing 13, and being set through the first side wall 1321.So so that what vibrating diaphragm 33 was sent
Sound is delivered to speak by the preceding operatic tunes 1111 and passage 1113 and is sent through passage 1113 of speaking.Vibrating diaphragm 33 is equipped with connection ante-chamber
111 of sound-resistance material with the leak 38 of back cavity 113 and being made and cover the ventilative distance piece 39 of leak 38, wherein, leak
Hole 38 is arranged far from speaking the side of passage 1113.That is, the distance of leak 38 to second sidewall 1322 is less than leak 38
To the distance of the first side wall 1321.The setting connection ante-chamber and back cavity of leak, can effectively balance back cavity air pressure, without
Balancing orifice is in addition opened in back cavity, ensures the closed and uniformity of loudspeaker enclosure shape.And leak 38 be arranged far from speaking it is logical
The side in road 1113 can then ensure balance when vibrating diaphragm 33 vibrates, so as to fulfill more preferable acoustical behavior.
Vibrating diaphragm 33 includes body 331 and fixed part 333, and fixed part 333 stretches out from body 331 to be formed and fix
In frame 31, leak 38 runs through body 331, and body 331 includes top dome portion 3311, bending part 3313 and reinforcing plate
3315, bending part 3313 extends to fixed part 333 from 3311 outward bending of top dome portion, and reinforcing plate 3315 is stacked at top dome portion
3311。
In the present embodiment, leak 38 is rounded, and the quantity of leak is one, and leak 38 sequentially passes through reinforcing plate
3315 with top dome portion 3311.Certainly in other embodiments, leak 38 can also be other quantity, and leak 38 can be in ellipse
Circle, track type, polygon or other irregular figures, leak 38 can also be arranged on the other positions of body 331.Leakage
The area in hole arrives 0.05mm for 0.0012, in the range of this, can both ensure equilibrium air pressure, it is also possible that ante-chamber and back cavity
Effectively split, ensure the acoustical behavior of loudspeaker enclosure.
In the present embodiment, the quantity for distance piece 39 of breathing freely is two, and two ventilative distance pieces 39 are fixedly arranged on reinforcing plate respectively
3315 and top dome portion 3311 to cover the both ends open of leak 38.Certainly in other embodiments, breathing freely distance piece 39 can be with
The one end open of leak 38 is only covered, can also be filled in leak 38.
Embodiment two
Referring to Fig. 5, Fig. 5 is the sectional view of the loudspeaker monomer of embodiment two provided by the utility model, the present embodiment
Difference lies in the hole of hitting that body 331a includes top dome portion 3311a, is enclosed by top dome portion 3311a with embodiment one
3317a and top dome portion 3311a is stacked to cover the reinforcing plate 3315a for the hole 3317a that hits, leak 38a runs through reinforcing plate
3315a, and leak 38a is in the range of the hole 3317a that hits.
In the present embodiment, the quantity for the distance piece 39a that breathes freely is two, and two ventilative distance pieces 39 are fixedly arranged on reinforcing plate respectively
3315 and top dome portion 3311 to cover the both ends open of leak 38.Certainly in other embodiments, breathing freely distance piece 39 can be with
The one end open of leak 38 is only covered, can also be filled in leak 38.
Embodiment three
Referring to Fig. 6, Fig. 6 is the sectional view of the loudspeaker monomer of embodiment three provided by the utility model, the present embodiment
With embodiment one difference lies in：Body 331b does not include reinforcing plate, and leak 38b runs through top dome portion 3311b, interval of breathing freely
Part 39b is covered in the side of leak 38b.
Compared with correlation technique, loudspeaker enclosure provided by the utility model has the advantages that：
Loudspeaker enclosure includes the housing with collecting cavity, is contained in collecting cavity and the loudspeaker monomer with vibrating diaphragm,
Vibrating diaphragm will house cavity and be divided into ante-chamber and back cavity, and loudspeaker monomer further includes the leakage arranged on vibrating diaphragm and connection ante-chamber and back cavity
Hole.The setting of leak, can not only be effectively improved the intermediate frequency distortion of loudspeaker enclosure, and can effectively weaken the generation of ante-chamber resonance
Radio-frequency component and high-frequency noise, further, leak is effective to balance back cavity air pressure by connecting ante-chamber and back cavity,
Without in addition opening balancing orifice in back cavity, ensure the closed and uniformity of loudspeaker enclosure shape.Leak is arranged far from speaking
The side of passage can then ensure that sound wave is preferably resonated in ante-chamber, so as to fulfill more preferable acoustical behavior.
Fig. 7, Fig. 8 and Fig. 9 are please referred to, wherein, Fig. 7 is the total harmonic distortion of loudspeaker enclosure provided by the utility model
The comparison diagram of the total harmonic distortion curve of curve and correlation technique loudspeaker enclosure, Fig. 8 loudspeaker enclosures provided by the utility model
The comparison diagram of the frequency response curve of frequency response curve and correlation technique loudspeaker enclosure, Fig. 9 raise to be provided by the utility model
The comparison diagram of the higher hamonic wave curve of sound device case and the higher hamonic wave curve of correlation technique loudspeaker enclosure.The result of Fig. 7 to Fig. 9 is
The system test carried out when passage 1113 of speaking has larger resistance, curve I represents the total humorous of correlation technique loudspeaker enclosure in Fig. 7
Wave distortion curve, curve II represent the total harmonic distortion curve of loudspeaker enclosure 100 provided by the utility model, can from Fig. 7
Go out, 100 intermediate frequency distortion of loudspeaker enclosure provided by the utility model is relatively low, and curve I represents loudspeaker enclosure in correlation technique in Fig. 8
100 frequency response curve, curve II represent the frequency response curve of loudspeaker enclosure 100 provided by the utility model, can from Fig. 8
To find out, the high resonance of loudspeaker enclosure 100 provided by the utility model weakens, and resonance peak reduces, and radio-frequency component is reduced, and sense of hearing becomes
It is good；Curve I represents the higher hamonic wave curve of loudspeaker enclosure in correlation technique in Fig. 9, and curve II represents provided by the utility model
100 higher hamonic wave curve of loudspeaker enclosure, 100 higher hamonic wave of loudspeaker enclosure provided by the utility model is obvious as can be seen from Figure 9
Reduce, its sense of hearing improves substantially, while does not produce interference to the sound for passage 1113 of speaking
The operation principle of loudspeaker enclosure 100 is：When voice coil loudspeaker voice coil 37 receives extraneous current signal, voice coil loudspeaker voice coil 37 is subject in magnetic field
The effect of Loulun magnetism can generation position.The current signal that voice coil loudspeaker voice coil 37 receives therewith is constantly changed direction so that voice coil loudspeaker voice coil 37 receives
Loulun magnetism also correspondent transform direction so that voice coil loudspeaker voice coil 37 moves back and forth, so as to drive the vibration of vibrating diaphragm 33 to make a sound, lead to
Passage 1113 of speaking is crossed to spread out of.When having larger resistance or damping in passage 1113 of speaking, 100 intermediate frequency distortion meeting of loudspeaker enclosure
Rise, seriously affects the listening quality of loudspeaker enclosure 100, simultaneously because 111 resonance of ante-chamber of loudspeaker enclosure 100, can amplify height
Frequency component and high-frequency noise, influence sense of hearing.
Loudspeaker enclosure 100 provided by the utility model is by setting the principle that leak 38 overcomes drawbacks described above as follows：
Wherein, Fh is high-frequency resonant frequency, and Ca is acoustic compliance, and Mp is equivalent acoustic mass, and V represents 111 volume of ante-chamber, and ρ 0 is sky
Air tightness, c0 are THE VELOCITY OF SOUND IN AIR.
Leak 38 destroys the integrality of V, reduces the resonance of ante-chamber 111, and leak 38 connects ante-chamber 111 and back cavity
113, on the one hand can play the role of pressing, when passage 1113 of speaking have larger resistance or damping when, can part reduction
The influence that air nonlinearity is brought, while weaken waving for vibrating diaphragm 33, on the other hand, the propagation of higher hamonic wave is controlled, makes its nothing
Method, which produces the sound for passage 1113 of speaking, harasses, and improves listening quality.
More than be only the utility model embodiment, it should be noted here that for those of ordinary skill in the art
For, on the premise of not departing from the utility model and creating design, improvement can also be made, but these belong to the utility model
Protection domain.
Claims (10)
1. a kind of loudspeaker enclosure, including with housing the housing of cavity, be contained in the collecting cavity and raising one's voice with vibrating diaphragm
The collecting cavity is divided into ante-chamber and back cavity by device monomer, the vibrating diaphragm, it is characterised in that：The ante-chamber include the preceding operatic tunes and
The preceding operatic tunes and extraneous passage of speaking are connected, the loudspeaker monomer is further included arranged on the vibrating diaphragm and the connection ante-chamber
With the leak of the back cavity, the leak is arranged on side of the vibrating diaphragm away from the passage of speaking.
2. loudspeaker enclosure as claimed in claim 1, it is characterised in that：The area of the leak arrives 0.05mm for 0.0012。
3. loudspeaker enclosure as claimed in claim 1, it is characterised in that：The quantity of the leak is one, the leak
Rounded or oval or track type.
4. loudspeaker enclosure as claimed in claim 1, it is characterised in that：The loudspeaker monomer is further included on the vibrating diaphragm
To cover the ventilative distance piece of the leak.
5. loudspeaker enclosure as claimed in claim 4, it is characterised in that：The ventilative distance piece is made of sound-resistance material.
6. loudspeaker enclosure as claimed in claim 1, it is characterised in that：The housing includes roof, bottom wall and the connection top
The side wall of wall and bottom wall, the passage of speaking run through the side wall, the preceding operatic tunes are formed between the vibrating diaphragm and the roof,
The back cavity is formed between the vibrating diaphragm and the bottom wall.
7. loudspeaker enclosure as claimed in claim 6, it is characterised in that：The side wall includes the first side set along long axis direction
Wall and second sidewall and connection the first side wall and the 3rd side wall of second sidewall, the passage of speaking run through first side
Wall, the distance of the leak to the second sidewall are less than the leak to the distance of the first side wall.
8. such as the loudspeaker enclosure any one of claim 1-7, it is characterised in that：The loudspeaker monomer further includes basin
Frame, the vibrating diaphragm include the body equipped with the leak and from the body stretch out to be formed and secured to the basin
The fixed part of frame, the body include the top dome portion equipped with the leak and extend to institute from top dome portion outward bending
State the bending part of fixed part.
9. loudspeaker enclosure as claimed in claim 8, it is characterised in that：The body, which further includes, is stacked at the top dome portion
Reinforcing plate, the leak sequentially pass through the top dome portion and the reinforcing plate.
10. loudspeaker enclosure as claimed in claim 8, it is characterised in that：The body includes top dome portion, by the top dome portion
Hitting for being enclosed and is stacked at the top dome portion to cover the reinforcing plate in the hole of hitting at hole, and the leak is through described
Reinforcing plate, and the leak is in the range of the hole of hitting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721246741.3U CN207354575U (en) | 2017-09-26 | 2017-09-26 | Loudspeaker enclosure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721246741.3U CN207354575U (en) | 2017-09-26 | 2017-09-26 | Loudspeaker enclosure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207354575U true CN207354575U (en) | 2018-05-11 |
Family
ID=62356827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721246741.3U Expired - Fee Related CN207354575U (en) | 2017-09-26 | 2017-09-26 | Loudspeaker enclosure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207354575U (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108810771A (en) * | 2018-08-14 | 2018-11-13 | 瑞声科技(新加坡)有限公司 | Microphone device |
| CN109121051A (en) * | 2018-08-14 | 2019-01-01 | 瑞声科技(新加坡)有限公司 | Microphone device |
| CN110035359A (en) * | 2018-12-30 | 2019-07-19 | 瑞声科技(新加坡)有限公司 | Microphone device |
| CN110234042A (en) * | 2019-07-12 | 2019-09-13 | 刘世阳 | From pressure release water-proof loudspeaker |
| CN110381426A (en) * | 2019-07-11 | 2019-10-25 | 瑞声光电科技(常州)有限公司 | Loudspeaker enclosure |
| CN110401904A (en) * | 2019-07-12 | 2019-11-01 | 刘世阳 | Sounding film is pasted from pressure release waterproof |
| CN110798785A (en) * | 2019-10-10 | 2020-02-14 | 瑞声科技(新加坡)有限公司 | Sound production device |
| CN112333611A (en) * | 2020-11-30 | 2021-02-05 | 歌尔股份有限公司 | Sound monomer |
| CN113473334A (en) * | 2021-06-29 | 2021-10-01 | 歌尔股份有限公司 | Sound production monomer, speaker subassembly and electronic equipment |
| WO2022062116A1 (en) * | 2020-09-22 | 2022-03-31 | 瑞声声学科技(深圳)有限公司 | Sound production device |
| CN117915248A (en) * | 2024-03-20 | 2024-04-19 | 瑞声光电科技(常州)有限公司 | Sounding device |
-
2017
- 2017-09-26 CN CN201721246741.3U patent/CN207354575U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109121051A (en) * | 2018-08-14 | 2019-01-01 | 瑞声科技(新加坡)有限公司 | Microphone device |
| CN108810771A (en) * | 2018-08-14 | 2018-11-13 | 瑞声科技(新加坡)有限公司 | Microphone device |
| CN110035359B (en) * | 2018-12-30 | 2021-01-15 | 瑞声科技(新加坡)有限公司 | Sound production device |
| CN110035359A (en) * | 2018-12-30 | 2019-07-19 | 瑞声科技(新加坡)有限公司 | Microphone device |
| CN110381426A (en) * | 2019-07-11 | 2019-10-25 | 瑞声光电科技(常州)有限公司 | Loudspeaker enclosure |
| CN110234042A (en) * | 2019-07-12 | 2019-09-13 | 刘世阳 | From pressure release water-proof loudspeaker |
| CN110401904A (en) * | 2019-07-12 | 2019-11-01 | 刘世阳 | Sounding film is pasted from pressure release waterproof |
| CN110798785A (en) * | 2019-10-10 | 2020-02-14 | 瑞声科技(新加坡)有限公司 | Sound production device |
| WO2022062116A1 (en) * | 2020-09-22 | 2022-03-31 | 瑞声声学科技(深圳)有限公司 | Sound production device |
| CN112333611A (en) * | 2020-11-30 | 2021-02-05 | 歌尔股份有限公司 | Sound monomer |
| CN113473334A (en) * | 2021-06-29 | 2021-10-01 | 歌尔股份有限公司 | Sound production monomer, speaker subassembly and electronic equipment |
| CN117915248A (en) * | 2024-03-20 | 2024-04-19 | 瑞声光电科技(常州)有限公司 | Sounding device |
| CN117915248B (en) * | 2024-03-20 | 2024-05-14 | 瑞声光电科技(常州)有限公司 | Sounding device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180511 |
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| CF01 | Termination of patent right due to non-payment of annual fee |