CN106162459A - Loudspeaker enclosure and there is the electronic equipment of this loudspeaker enclosure - Google Patents

Loudspeaker enclosure and there is the electronic equipment of this loudspeaker enclosure Download PDF

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Publication number
CN106162459A
CN106162459A CN201610576650.XA CN201610576650A CN106162459A CN 106162459 A CN106162459 A CN 106162459A CN 201610576650 A CN201610576650 A CN 201610576650A CN 106162459 A CN106162459 A CN 106162459A
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CN
China
Prior art keywords
upper cover
loudspeaker enclosure
loudspeaker
leak
roof
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Granted
Application number
CN201610576650.XA
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Chinese (zh)
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CN106162459B (en
Inventor
秦鹏
魏威
蔡斌
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AAC Technologies Pte Ltd
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AAC Technologies Pte Ltd
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Priority to CN201610576650.XA priority Critical patent/CN106162459B/en
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Publication of CN106162459B publication Critical patent/CN106162459B/en
Expired - Fee Related legal-status Critical Current
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2400/00—Loudspeakers
    • H04R2400/11—Aspects regarding the frame of loudspeaker transducers

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)

Abstract

The present invention provides a kind of loudspeaker enclosure, it includes upper cover, assemble with described upper cover and form the lower cover of receiving space and be contained in the loudspeaker monomer in described receiving space, described loudspeaker monomer includes vibrating diaphragm, described upper cover and described vibrating diaphragm surround the front operatic tunes, described loudspeaker enclosure is additionally provided with the sound channel that the sound produced by described loudspeaker monomer is derived, the described front operatic tunes and described sound channel collectively form ante-chamber, described loudspeaker box also includes leakage structure, described leakage structure includes the sealing lid being located at above described upper cover and runs through the leak that described upper cover is arranged, described upper cover and described sealing lid surround cavity, described leak connects described ante-chamber and described cavity.Present invention simultaneously provides a kind of electronic equipment including loudspeaker enclosure.Compared with prior art, the loudspeaker enclosure intermediate frequency distortion that the present invention provides is relatively low, and high-frequency resonant weakens, and resonance peak reduces, and radio-frequency component reduces, and sense of hearing improves and sender does not has acoustic crosstalk.

Description

Loudspeaker enclosure and there is the electronic equipment of this loudspeaker enclosure
[technical field]
The present invention relates to electroacoustic conversion art, particularly relate to a kind of loudspeaker enclosure and there is the electronics of this loudspeaker enclosure set Standby.
[background technology]
Along with the arrival in mobile Internet epoch, the popularity rate of audio frequency apparatus is more and more higher, and audio frequency apparatus is wanted by people Ask the broadcasting being not limited only to video/audio, more the reliability of audio frequency apparatus is proposed more requirements.Arriving of especially 4G epoch Come, Technology of Mobile Multimedia develops the most therewith, and a lot of audio frequency apparatuses have multiple amusement function, as video playback, digital vedio recording, Game, GPS navigation etc..
And in audio frequency apparatus, loudspeaker enclosure is a kind of conventional electronic devices and components, it is mainly used in the broadcasting of audio signal. The loudspeaker enclosure of prior art includes that upper cover and described upper cover assemble and forms the lower cover of receiving space and be contained in described collecting The loudspeaker monomer in space, described loudspeaker monomer includes the front operatic tunes that vibrating diaphragm, described vibrating diaphragm and described upper cover surround, described in raise Sound device case be additionally provided with one with the conducting of the described front operatic tunes and for sound that described loudspeaker monomer is produced derive to described in raise one's voice Sound channel outside device case, described sound channel includes the sender being located at described upper cover and by described sender with extraneous Environmental communication, the described front operatic tunes and described sound channel collectively form ante-chamber.Sender and extraneous ring when described loudspeaker enclosure There is bigger damping in border in being communicated with bigger resistance or described sound channel time, such as complete machine environment, in described loudspeaker enclosure Frequently distortion can raise, and has a strong impact on the listening quality of described loudspeaker enclosure, simultaneously by the ante-chamber resonance of described loudspeaker enclosure, can put Big radio-frequency component and high-frequency noise.
By arranging leak at described upper cover in correlation technique, weaken ante-chamber resonance, although the aperture of leak is very Little, it is ideally that it is not spoken, but in actual test, it has been found that there is part higher hamonic wave can arrive described leak, from Described leak sound out likely can produce crosstalk to the sound of described sender.
Therefore, it is necessary to provide a kind of new loudspeaker enclosure to solve the problems referred to above in fact.
[summary of the invention]
It is an object of the invention to provide a kind of loudspeaker enclosure, its be used for solving existing loudspeaker enclosure intermediate frequency distortion higher, The loudspeaker enclosure higher hamonic wave increase of correlation technique causes sense of hearing to decline and sender sound produces the technical problem of crosstalk.
In order to solve above-mentioned technical problem, devising a kind of loudspeaker enclosure, it includes that upper cover and described upper cover assemble formation The lower cover of receiving space and be contained in the loudspeaker monomer in described receiving space, described loudspeaker monomer includes vibrating diaphragm, institute Stating upper cover and described vibrating diaphragm surrounds the front operatic tunes, described loudspeaker enclosure is additionally provided with one and turns on and for raising described with the described front operatic tunes The sound that sound device monomer produces derives the sound channel outside described loudspeaker enclosure, and the described front operatic tunes and described sound channel are common Constituting ante-chamber, described loudspeaker box also includes that leakage structure, described leakage structure include being located at the sealing above described upper cover Covering and at least one runs through the leak that described upper cover is arranged, described upper cover and described sealing lid surround cavity, described leakage Hole connects described ante-chamber and described cavity.
Preferably, described upper cover includes roof and from described roof to the upper cover sidewall extended away from described roof direction, Described leak runs through described roof and arranges, and the one end open of described sound channel connects with the described front operatic tunes, other end opening For the sender connected with external environment, described sender is positioned at described upper cover sidewall.
Preferably, generally circular in shape or the square or triangle of described leak or polygon.
Preferably, the quantity of described leak is one and is located at the roof corresponding with the described front operatic tunes.
Preferably, described leakage structure also includes the sound-absorbing material covering described leak.
Preferably, described sound-absorbing material covers one end of connecting with described cavity of described leak and is positioned at described roof court Surface to described sealing lid.
Preferably, described sealing lid includes base plate spaced with described roof and from described base plate to described roof side To the sealing lid sidewall extended, described sealing lid sidewall abuts described roof, described roof, described base plate and described sealing lid side Wall surrounds described cavity.
Present invention simultaneously provides a kind of electronic equipment including above-mentioned loudspeaker enclosure.
Compared with correlation technique, loudspeaker enclosure that the present invention provides and there is the electronic equipment of this loudspeaker enclosure have following Beneficial effect:
One, using novel leakage structure, described leakage structure includes running through the leak of described roof setting, being located at institute Stating the sealing lid above upper cover, and the cavity surrounded by described sealing lid and described upper cover, the connection of described leak is described Cavity and described ante-chamber, the mode using leak and cavity to combine, on the one hand can weaken ante-chamber resonance, reduce higher hamonic wave and become Part, improve listening quality, on the other hand, described cavity can be entered from described leak sound out, will not be to sender Sound produces crosstalk.
Two, short due to the wavelength of higher hamonic wave, it is easily accessible described leak, for reducing to go out from described leak further The higher hamonic wave the come impact on described loudspeaker enclosure tonequality, the present invention is provided with the sound-absorbing material covering described leak, should Sound-absorbing material can absorb the higher hamonic wave arriving described leak, reduces the crosstalk of the sound to described sender, it is ensured that output Tonequality；Simultaneously by arrange sound-absorbing material also can reduce former described leak in terms of size to sound wave stop requirement, reduce Make the difficulty of processing of described leak.
[accompanying drawing explanation]
The perspective exploded view of the loudspeaker box embodiment one that Fig. 1 provides for the present invention；
Fig. 2 is that the three-dimensional of loudspeaker enclosure shown in Fig. 1 assembles schematic diagram；
Fig. 3 is that loudspeaker enclosure shown in Fig. 2 is along the sectional view of line A-A；
The three-dimensional of the loudspeaker enclosure embodiment two that Fig. 4 provides for the present invention assembles schematic diagram；
Fig. 5 is that loudspeaker enclosure shown in Fig. 4 is along the sectional view of line A-A；
Fig. 6 is total harmonic distortion curve and the total harmonic distortion song of prior art loudspeaker enclosure of loudspeaker enclosure described in Fig. 1 Line comparison diagram；
Fig. 7 is frequency response curve and the frequency response curve pair of prior art loudspeaker enclosure of loudspeaker enclosure described in Fig. 1 Than figure；
Fig. 8 is the higher hamonic wave curve of loudspeaker enclosure described in Fig. 1 and the leakage structure of correlation technique loudspeaker enclosure is only let out The higher hamonic wave curve comparison figure of small opening.
[detailed description of the invention]
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Describe, it is clear that described embodiment is only some embodiments of the present invention rather than whole embodiments wholely.Based on Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under not making creative work premise Embodiment, broadly falls into the scope of protection of the invention.
Embodiment one
Please refer to Fig. 1, Fig. 2 and Fig. 3, wherein, loudspeaker box one preferred embodiment that Fig. 1 provides for the present invention Perspective exploded view；Fig. 2 is that the three-dimensional of loudspeaker enclosure shown in Fig. 1 assembles schematic diagram；Fig. 3 is loudspeaker enclosure shown in Fig. 2 along A-A The sectional view of line.The invention provides a kind of loudspeaker enclosure 100, it includes that upper cover 1 and described upper cover 1 assemble formation and house sky Between 2A lower cover 3, be contained in the flexible electrical that the loudspeaker monomer 4 of described receiving space 2A electrically connects with described loudspeaker monomer 4 Ante-chamber 6 that road plate 5 connects with external environment and leakage structure 7.
Described upper cover 1 includes roof 11 and from described roof 11 to the upper cover sidewall extended away from described roof 11 direction 13, the quantity of described upper cover sidewall 13 is four and joins end to end.
Described lower cover 3 includes that accepting groove 31, described loudspeaker monomer 4 are arranged in described accepting groove 31, described lower cover 3 Support the effect of described loudspeaker monomer 4.
Described loudspeaker monomer 4 includes magnetic circuit system 41 and is driven to produce the vibration of sound by described magnetic circuit system 41 System 43.Described vibrational system 43 includes vibrating diaphragm 431 and drives the voice coil loudspeaker voice coil 433 of described vibrating diaphragm 431 vibration.
Described ante-chamber 6 is by the front operatic tunes 61 and connects the sound channel 63 of the described front operatic tunes 61 and constitutes.The described front operatic tunes 61 Referring to the space surrounded by described vibrating diaphragm 431 and described upper cover 1, described sound channel 63 refers to described loudspeaker monomer 4 The sound gone out derives the passage outside described loudspeaker enclosure 100.Described sound channel 63 includes that connect with external environment goes out sound Hole 631, described sender 631 is located at one end of described sound channel 63, is specifically opened in described upper cover sidewall 13, with described go out The other end that sound hole 631 is relative connects with the described front operatic tunes 61.Described sender 631 is to connect described ante-chamber 6 and external environment Opening, in the present embodiment, described sender 631 is located at the side of described upper cover 1, and the most described loudspeaker enclosure 100 side is sent out Sound.It is further preferable that be additionally provided with the Air Filter 9 covering described sender 631 outside described sender 631.
Described leakage structure 7 includes being located at the sealing lid 71 above described upper cover 1 and at least one runs through described upper cover 1 The leak 73 arranged, described upper cover 1 and described sealing lid 71 surround cavity 75, and described leak 73 connects described ante-chamber 6 He Described cavity 75.
Described sealing lid 71 includes base plate 711 and from described base plate to the sealing lid extended towards described roof 11 direction Sidewall 713.The profile of described base plate 711 is rectangle, and described sealing lid sidewall 713 quantity is four and end to end.Described Sealing lid sidewall 713 abuts described roof 11, and described roof 11, described base plate 711 and described sealing lid sidewall 713 surround jointly Described cavity 75.
Described leak 73 runs through described roof 11 and arranges and connect described ante-chamber 6 and described cavity 75.By arranging State leak 73 and can weaken the resonance of described ante-chamber 6, improve intermediate frequency distortion, reduce radio-frequency component and high-frequency noise.The present invention carries The quantity of the leak 73 of the described speaker 100 of confession is at least one, can be one can also for multiple, multiple described in let out The arrangement mode of small opening 73 can be its aesthetic feeling of evenly distributed increase, naturally it is also possible to arbitrary arrangement.The shape of described leak 73 Shape can be the shape of rule or irregular shape, and the shape of rule is specifically as follows circle, square, triangle, polygon In one, certainly other do not enumerate rule shapes also in the scope of protection of the invention.Described leak 73 can be located at institute State the front operatic tunes 61 and/or the roof 11 of described sound channel 63 correspondence, as long as it can make described ante-chamber 6 with external environment even Logical, then can play the effect all pressed, especially when described sender 631 has bigger resistance or damping, can the minimizing of part The impact that air nonlinearity brings, alleviates described vibrating diaphragm 431 simultaneously and waves.
Described cavity 75 is surrounded by described sealing lid 71 and described roof 11, and described cavity 75 is by described leak 73 He Described ante-chamber 6 connects.Enter described cavity 75 from described leak 73 sound out, can reduce described sender 631 Acoustic crosstalk, improves sense of hearing.
The loudspeaker enclosure 100 that the present invention provides has the advantages that
The aperture of described leak 73 is the least, and perfect condition is that it is not spoken, but has been also found that the least in actual test Partial sound arrives described leak 73, makes the composition of higher hamonic wave increase, causes sense of hearing to decline, in order to overcome this defect, this Invention uses novel leakage structure 7, described leakage structure 7 include running through leak 73 that the roof 11 of described upper cover 1 arranges, It is located at the sealing lid 71 above described upper cover 1, and the cavity surrounded by the roof 11 of described sealing lid 71 and described upper cover 1 75, described leak 73 connects described cavity 75 and described ante-chamber 6, and described leak 73 and described cavity 75 coordinate, on the one hand Weaken described ante-chamber 6 to resonate, reduce higher hamonic wave composition, improve listening quality, on the other hand, from described leak 73 out Sound can enter described cavity 75, the sound of described sender 631 will not be produced crosstalk.
Embodiment two
The three-dimensional of loudspeaker box embodiment two provided for the present invention incorporated by reference to ginseng Fig. 4 and Fig. 5, Fig. 4 assembles schematic diagram, Fig. 5 is that loudspeaker enclosure shown in Fig. 4 is along the sectional view of line A-A.
Embodiment two is essentially identical with the structure of embodiment one, described loudspeaker enclosure 200 and described its district of loudspeaker enclosure 100 Not being, described leakage structure 7 also includes the sound-absorbing material 77 covering described leak 73, can be used for absorbing the described leakage of arrival The higher hamonic wave in hole 73, reduces the crosstalk of the sound to described sender 631.Described sound-absorbing material 77 can cover described leak 73 one end connected with described cavity 75 and be positioned at the described roof 11 surface towards described base plate 711, or described sound absorption material Material 77 can cover one end that described leak 73 connect with described ante-chamber 6 and be positioned at described roof 11 and cover 71 away from described sealing The surface of described base plate 711, or it can be filled in described leak 73.Described sound-absorbing material 77 preferred grid cloth, institute Stating grid cloth mainly has polyester and terylene to utilize high accuracy loom to work out by preset ratio.In the present embodiment, described Sound-absorbing material 77 covers one end that described leak 73 connects with described cavity 75 and is positioned at described roof 11 towards described base plate The surface of 711.
The loudspeaker enclosure 200 that the present invention provides has the advantages that owing to the wavelength of higher hamonic wave is short, is easily accessible Described leak 73, for reducing further from described leak 73 higher hamonic wave out described loudspeaker enclosure 200 tonequality Impact, the present invention is provided with the sound-absorbing material 77 covering described leak 73, this sound-absorbing material 77 described leakage of absorbable arrival The higher hamonic wave in hole 73, reduces the crosstalk of the sound to described sender 631, it is ensured that output tonequality；Simultaneously by arranging sound absorption Material 77 also can reduce the requirement that sound wave is stopped in terms of size by former described leak 73, reduces and makes described leak 73 Difficulty of processing.
Please refer to Fig. 6, Fig. 7 and Fig. 8, wherein, Fig. 6 is that the total harmonic distortion curve of loudspeaker enclosure described in Fig. 1 is with existing Having the total harmonic distortion curve comparison figure of technology loudspeaker enclosure, Fig. 7 is the frequency response curve of loudspeaker enclosure described in Fig. 1 and existing Technology loudspeaker enclosure frequency response curve comparison diagram, Fig. 8 is the higher hamonic wave curve of loudspeaker enclosure described in Fig. 1 and correlation technique is raised The leakage structure of sound device case only has the higher hamonic wave curve comparison figure of leak.
The result of Fig. 6 to Fig. 8 is the system test carried out when described sender 631 has bigger resistance, the curve in Fig. 6 The I total harmonic distortion curve representing loudspeaker enclosure 100 of the present invention, curve II represents the total harmonic distortion of prior art loudspeaker enclosure Curve, from fig. 6, it can be seen that described loudspeaker enclosure 100 intermediate frequency distortion that this programme provides is relatively low；Curve I in Fig. 7 represents this The frequency response curve of invention loudspeaker enclosure 100, curve II represents the frequency response curve of prior art loudspeaker enclosure, from Fig. 7 Can be seen that described loudspeaker enclosure 100 high-frequency resonant that this programme provides weakens, resonance peak reduces, and radio-frequency component reduces, sense of hearing Improve；Curve I in Fig. 8 represents the higher hamonic wave curve of loudspeaker enclosure 100 of the present invention, and curve II represents correlation technique speaker The leakage structure of case only has the higher hamonic wave curve of leak, the described loudspeaker enclosure 100 that this programme provides as can be seen from Figure 8 Higher hamonic wave substantially reduces, and sense of hearing is improved substantially, the most the sound of described sender 631 is not produced crosstalk.
The operation principle of described loudspeaker enclosure is: when described voice coil loudspeaker voice coil 433 receives external impressed current signal, described voice coil loudspeaker voice coil 433 In magnetic field, the effect by Lorentz force can produce displacement.The current signal constantly side of conversion received along with described voice coil loudspeaker voice coil 433 To so that the Lorentz force also correspondent transform direction that described voice coil loudspeaker voice coil 433 is subject to, so that described voice coil loudspeaker voice coil 433 moves back and forth, from And drive the vibration of described vibrating diaphragm 431 to send sound, spread out of by described sender 631.When in described sound channel 63 or described When sender 631 has bigger resistance or damping, described loudspeaker enclosure intermediate frequency distortion can raise, and has a strong impact on described loudspeaker enclosure Listening quality, simultaneously because the ante-chamber resonance of described loudspeaker enclosure, can amplify radio-frequency component and high-frequency noise, affect sense of hearing.This Invention offer can preferably overcome this defect by arranging leakage structure 7.Principle is as follows:
F h = 1 2 π 1 C a × M p
C a = v ρ 0 × C 0 2
Wherein, Fh is high-frequency resonant frequency, and Ca is acoustic compliance, and Mp is equivalent sound quality, and V represents front cavity volume, ρ0For air Density, C0For THE VELOCITY OF SOUND IN AIR.
Leak 75 in described leakage structure 7 destroys the integrity of V, reduces the resonance of described ante-chamber 6, described in let out Small opening 75 connects with described cavity 73, and described cavity 73 connects with external environment and volume is bigger, on the one hand, can play all The effect of pressure, when described sender 631 has bigger resistance or damping, partly can reduce the shadow that air nonlinearity brings Ring, alleviate described vibrating diaphragm 431 simultaneously and wave；On the other hand, by arranging described cavity 73 so that arrive described leak 75 Higher hamonic wave enters described cavity 73, the sound going out described sender 631 is not produced crosstalk, improves listening quality.
It addition, present invention also offers a kind of electronic equipment, described electronic equipment includes raising one's voice described in above-described embodiment Device case.Wherein, the composition structure of described loudspeaker enclosure and annexation, refer to above-described embodiment, will not be described in great detail at this.
In actual applications, the electronic equipment that the present invention provides is specifically as follows mobile phone, panel computer etc..The present invention is to this Do not limit, as long as above-mentioned loudspeaker enclosure can be used.
Above-described is only embodiments of the present invention, it should be noted here that for those of ordinary skill in the art For, without departing from the concept of the premise of the invention, it is also possible to make improvement, but these belong to the protection model of the present invention Enclose.

Claims (8)

1. a loudspeaker enclosure, it includes that upper cover and described upper cover assemble and forms the lower cover of receiving space and be contained in described Loudspeaker monomer in receiving space, described loudspeaker monomer includes that vibrating diaphragm, described upper cover and described vibrating diaphragm surround the front operatic tunes, institute State loudspeaker enclosure be additionally provided with one with described front operatic tunes conducting deriving to the most described for sound that described loudspeaker monomer is produced Sound channel outside loudspeaker enclosure, the described front operatic tunes and described sound channel collectively form ante-chamber, it is characterised in that described in raise one's voice Device casing also includes that leakage structure, described leakage structure include being located at the sealing lid above described upper cover and at least one runs through The leak that described upper cover is arranged, described upper cover and described sealing lid surround cavity, the described leak described ante-chamber of connection and institute State cavity.
Loudspeaker enclosure the most according to claim 1, it is characterised in that described upper cover includes roof and from described roof to far The upper cover sidewall extended from described roof direction, described leak runs through described roof and arranges, and one end of described sound channel is opened Mouth connects with the described front operatic tunes, and other end opening is the sender connected with external environment, and described sender is positioned at described upper cover Sidewall.
Loudspeaker enclosure the most according to claim 2, it is characterised in that: described leak generally circular in shape or square or three Dihedral or polygon.
Loudspeaker enclosure the most according to claim 2, it is characterised in that: the quantity of described leak is one and is located at and institute State the roof that the front operatic tunes is corresponding.
Loudspeaker enclosure the most according to claim 2, it is characterised in that: described leakage structure also includes covering described leak Sound-absorbing material.
Loudspeaker enclosure the most according to claim 5, it is characterised in that: described sound-absorbing material covers described leak with described Cavity connection one end and be positioned at described roof towards described sealing lid surface.
Loudspeaker enclosure the most according to claim 2, it is characterised in that: described sealing lid includes and described roof interval is arranged Base plate and the sealing lid sidewall that extends to described roof direction from described base plate, described sealing lid sidewall abuts described roof, Described roof, described base plate and described sealing lid sidewall surround described cavity.
8. an electronic equipment, it is characterised in that include the loudspeaker enclosure as described in any one of claim 1-7.
CN201610576650.XA 2016-07-20 2016-07-20 Speaker box and electronic equipment with same Expired - Fee Related CN106162459B (en)

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WO2019153916A1 (en) * 2018-02-12 2019-08-15 歌尔股份有限公司 Loudspeaker module
CN110177323A (en) * 2019-05-15 2019-08-27 维沃移动通信有限公司 Loudspeaker and terminal device
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CN111031416A (en) * 2019-11-25 2020-04-17 歌尔股份有限公司 Loudspeaker module and electronic device
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CN114567841A (en) * 2022-02-28 2022-05-31 歌尔股份有限公司 Sound production device and electronic equipment
US20230217192A1 (en) * 2021-12-31 2023-07-06 Aac Microtech (Changzhou) Co., Ltd. Mems speaker and speaker assembly structure
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CN107454526A (en) * 2017-09-08 2017-12-08 广东欧珀移动通信有限公司 Electroacoustic component, electroacoustic device and mobile terminal
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