CN106162459B - Speaker box and electronic equipment with same - Google Patents

Speaker box and electronic equipment with same Download PDF

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Publication number
CN106162459B
CN106162459B CN201610576650.XA CN201610576650A CN106162459B CN 106162459 B CN106162459 B CN 106162459B CN 201610576650 A CN201610576650 A CN 201610576650A CN 106162459 B CN106162459 B CN 106162459B
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CN
China
Prior art keywords
cover
sound
cavity
loudspeaker
leakage
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Active
Application number
CN201610576650.XA
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Chinese (zh)
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CN106162459A (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
Publication of CN106162459A publication Critical patent/CN106162459A/en
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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06Loudspeakers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02Details
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2400/00Loudspeakers
    • H04R2400/11Aspects regarding the frame of loudspeaker transducers

Abstract

The invention provides a loudspeaker box, which comprises an upper cover, a lower cover and a loudspeaker monomer, wherein the lower cover and the upper cover are assembled to form an accommodating space, the loudspeaker monomer is accommodated in the accommodating space, the loudspeaker monomer comprises a vibrating diaphragm, the upper cover and the vibrating diaphragm enclose a front sound cavity, the loudspeaker box is also provided with a sound outlet channel for guiding out sound generated by the loudspeaker monomer, the front sound cavity and the sound outlet channel jointly form a front cavity, the loudspeaker box body further comprises a leakage structure, the leakage structure comprises a sealing cover arranged above the upper cover and a leakage hole penetrating through the upper cover, the upper cover and the sealing cover enclose a cavity, and the leakage hole is communicated with the front cavity and the cavity. The invention also provides an electronic device comprising the loudspeaker box. Compared with the prior art, the loudspeaker box provided by the invention has the advantages that the medium-frequency distortion is lower, the high-frequency resonance is weakened, the resonance peak is reduced, the high-frequency component is reduced, the hearing sense is better, and no sound crosstalk exists in the sound outlet hole.

Description

Speaker box and electronic equipment with same
[ technical field ] A method for producing a semiconductor device
The invention relates to the field of electroacoustic conversion, in particular to a loudspeaker box and electronic equipment with the loudspeaker box.
[ background of the invention ]
With the advent of the mobile internet era, the popularity of audio equipment is increasing, and people's requirements for audio equipment are not limited to the playing of video and audio, but also put forward more requirements for the reliability of audio equipment. Especially, with the advent of the 4G era, mobile multimedia technology has also developed, and many audio devices have multiple entertainment functions, such as video playing, digital camera shooting, games, GPS navigation, and the like.
In audio equipment, a speaker box is a common electronic component, and is mainly used for playing audio signals. The loudspeaker box in the prior art comprises an upper cover, a lower cover and a loudspeaker monomer, wherein the lower cover is assembled with the upper cover to form an accommodating space, the loudspeaker monomer is accommodated in the accommodating space, the loudspeaker monomer comprises a vibrating diaphragm, a front sound cavity is formed by the vibrating diaphragm and the upper cover, the loudspeaker box is further provided with a sound outlet channel which is communicated with the front sound cavity and used for leading sound generated by the loudspeaker monomer out to the outside of the loudspeaker box, the sound outlet channel comprises a sound outlet hole formed in the upper cover and communicated with the external environment through the sound outlet hole, and the front sound cavity and the sound outlet channel jointly form a front cavity. When the sound outlet hole of the loudspeaker box is communicated with the external environment to form larger resistance or the sound outlet channel is internally provided with larger damping, such as the whole environment, the medium-frequency distortion of the loudspeaker box can be increased to seriously affect the listening quality of the loudspeaker box, and simultaneously, the front cavity of the loudspeaker box resonates to amplify high-frequency components and high-frequency noise.
In the related art, the upper cover is provided with a leakage hole to weaken the resonance of the front cavity, although the aperture of the leakage hole is small and the leakage hole does not generate sound under an ideal state, in an actual test, a part of higher harmonics still reach the leakage hole, and the sound from the leakage hole may generate crosstalk to the sound of the sound output hole.
Therefore, there is a need to provide a new speaker box to solve the above problems.
[ summary of the invention ]
The invention aims to provide a loudspeaker box, which is used for solving the technical problems that the traditional loudspeaker box has high frequency distortion, the hearing sense is reduced due to the increase of higher harmonics of the loudspeaker box in the related art, and the sound of a sound outlet hole generates crosstalk.
In order to solve the technical problem, a loudspeaker box is designed, which comprises an upper cover, a lower cover and a loudspeaker monomer, wherein the upper cover is assembled to form an accommodating space, the lower cover is accommodated in the accommodating space, the loudspeaker monomer comprises a vibrating diaphragm, the upper cover and the vibrating diaphragm are enclosed to form a front sound cavity, the loudspeaker box is further provided with a leakage structure, the front sound cavity is communicated with the front sound cavity, the sound generated by the loudspeaker monomer is guided to an outer sound outlet channel of the loudspeaker box, the front sound cavity and the sound outlet channel jointly form the front cavity, the loudspeaker box further comprises the leakage structure, the leakage structure comprises a sealing cover and at least one leakage hole, the sealing cover is arranged above the upper cover, the upper cover and the sealing cover are enclosed to form a cavity, and the leakage hole is communicated with the front cavity and the cavity.
Preferably, the upper cover includes the roof and certainly the roof is to keeping away from the upper cover lateral wall that the roof direction extends, let out the leakage hole and run through the roof sets up, go out the one end opening of sound passageway with preceding sound chamber intercommunication, other end opening is for going out the sound hole with external environment intercommunication, it is located to go out the sound hole the upper cover lateral wall.
Preferably, the shape of the leakage hole is circular or square or triangular or polygonal.
Preferably, the number of the leakage holes is one, and the leakage holes are arranged on the top wall corresponding to the front sound cavity.
Preferably, the leakage structure further includes a sound absorbing material covering the leakage hole.
Preferably, the sound absorbing material covers an end of the leakage hole communicating with the cavity and is located on a surface of the top wall facing the sealing cover.
Preferably, the sealing cover comprises a bottom plate arranged at an interval with the top wall and a sealing cover side wall extending from the bottom plate to the top wall, the sealing cover side wall abuts against the top wall, and the top wall, the bottom plate and the sealing cover side wall enclose the cavity.
The invention also provides electronic equipment comprising the loudspeaker box.
Compared with the related art, the loudspeaker box and the electronic equipment with the loudspeaker box provided by the invention have the following beneficial effects:
one, adopt neotype leakage structure, leakage structure is including running through leakage hole, locate that the roof set up the involution lid of upper cover top, and pass through the involution lid with the cavity that the upper cover encloses, leak the hole intercommunication the cavity with the antechamber adopts the mode of leaking hole and cavity combination, can weaken antechamber resonance on the one hand, reduces the higher harmonic composition, improves the listening quality, on the other hand, follows the sound that leaks the hole and come into the cavity can not produce the sound of going out the sound hole and crosstalk.
Secondly, because the wavelength of the higher harmonic wave is short, the higher harmonic wave can easily enter the leakage hole, and in order to further reduce the influence of the higher harmonic wave coming out of the leakage hole on the tone quality of the loudspeaker box, the sound absorption material covering the leakage hole is arranged, and can absorb the higher harmonic wave reaching the leakage hole, reduce the crosstalk to the sound of the sound outlet hole and ensure the output tone quality; simultaneously through setting up sound absorbing material also can reduce originally leak the hole and stop the requirement of sound wave in the aspect of the size, reduce the preparation leak the processing degree of difficulty in the hole.
[ description of the drawings ]
Fig. 1 is a schematic perspective exploded view of a first embodiment of a speaker cabinet according to the present invention;
FIG. 2 is a perspective assembled view of the speaker cabinet of FIG. 1;
FIG. 3 is a cross-sectional view of the loudspeaker enclosure of FIG. 2 taken along line A-A;
fig. 4 is a schematic perspective assembly view of a second embodiment of the speaker box according to the present invention;
FIG. 5 is a cross-sectional view of the loudspeaker enclosure of FIG. 4 taken along line A-A;
FIG. 6 is a graph comparing the total harmonic distortion curve of the loudspeaker enclosure of FIG. 1 with the total harmonic distortion curve of a prior art loudspeaker enclosure;
FIG. 7 is a graph comparing the frequency response of the loudspeaker enclosure of FIG. 1 with the frequency response of a prior art loudspeaker enclosure;
fig. 8 is a graph comparing the higher harmonic curve of the loudspeaker enclosure of fig. 1 with the higher harmonic curve of the leakage structure of the loudspeaker enclosure of the related art having only leakage holes.
[ detailed description ] embodiments
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
Please refer to fig. 1, fig. 2 and fig. 3, wherein fig. 1 is a schematic perspective exploded view of a preferred embodiment of a speaker box according to the present invention; FIG. 2 is a perspective assembled view of the speaker cabinet of FIG. 1; fig. 3 is a cross-sectional view of the loudspeaker enclosure of fig. 2 taken along line a-a. The invention provides a loudspeaker box 100 which comprises an upper cover 1, a lower cover 3 matched with the upper cover 1 to form an accommodating space 2A, a loudspeaker single body 4 accommodated in the accommodating space 2A, a flexible circuit board 5 electrically connected with the loudspeaker single body 4, a front cavity 6 communicated with the external environment and a leakage structure 7.
The upper cover 1 comprises a top wall 11 and upper cover side walls 13 extending from the top wall 11 to a direction far away from the top wall 11, wherein the number of the upper cover side walls 13 is four, and the upper cover side walls are connected end to end.
The lower cover 3 includes a receiving groove 31, the speaker unit 4 is disposed in the receiving groove 31, and the lower cover 3 supports the speaker unit 4.
The speaker unit 4 includes a magnetic circuit system 41 and a vibration system 43 driven by the magnetic circuit system 41 to generate sound. The vibration system 43 includes a diaphragm 431 and a voice coil 433 that drives the diaphragm 431 to vibrate.
The front chamber 6 is composed of a front sound chamber 61 and a sound outlet channel 63 communicating with the front sound chamber 61. The front sound cavity 61 is a space enclosed by the diaphragm 431 and the upper cover 1, and the sound outlet channel 63 is a channel for guiding the sound emitted by the speaker unit 4 out of the speaker box 100. The sound outlet channel 63 comprises a sound outlet hole 631 communicated with the external environment, the sound outlet hole 631 is formed in one end of the sound outlet channel 63, specifically, the upper cover side wall 13 is formed, and the other end opposite to the sound outlet hole 631 is communicated with the front sound cavity 61. The sound emitting hole 631 is an opening communicating the front chamber 6 with the external environment, and in this embodiment, the sound emitting hole 631 is disposed at a side of the upper cover 1, that is, a side of the speaker box 100. More preferably, a dust screen 9 covering the sound emitting hole 631 is further disposed outside the sound emitting hole 631.
The leakage structure 7 comprises a sealing cover 71 arranged above the upper cover 1 and at least one leakage hole 73 arranged through the upper cover 1, the upper cover 1 and the sealing cover 71 enclose a cavity 75, and the leakage hole 73 is communicated with the front cavity 6 and the cavity 75.
The sealing cover 71 includes a bottom plate 711 and a sealing cover sidewall 713 extending from the bottom plate toward the top wall 11. The bottom plate 711 is rectangular, and the number of the sealing cover side walls 713 is four and the sealing cover side walls are connected end to end. The sealing cover sidewall 713 abuts the top wall 11, and the top wall 11, the bottom plate 711 and the sealing cover sidewall 713 together enclose the cavity 75.
The leakage hole 73 is provided through the top wall 11 and communicates the front chamber 6 and the cavity 75. The resonance of the front cavity 6 can be weakened by providing the leakage hole 73, the medium frequency distortion can be improved, and the high frequency component and the high frequency noise can be reduced. The number of the leakage holes 73 of the speaker 100 provided by the invention is at least one, and may be one or more, and the arrangement mode of the plurality of leakage holes 73 may be uniform to increase the aesthetic feeling, and of course, may be any arrangement. The shape of the leakage hole 73 may be a regular shape or an irregular shape, and the regular shape may be specifically one of a circle, a square, a triangle, and a polygon, although other regular shapes not listed are also within the scope of the present invention. The leakage hole 73 may be disposed on the top wall 11 corresponding to the front sound cavity 61 and/or the sound outlet channel 63, so long as it can communicate the front cavity 6 with the external environment, so as to perform a pressure equalizing function, and especially when the sound outlet hole 631 has a large resistance or damping, the influence caused by the non-linearity of air can be partially reduced, and the vibration of the diaphragm 431 is reduced.
The cavity 75 is defined by the sealing cover 71 and the top wall 11, and the cavity 75 is communicated with the front cavity 6 through the leakage hole 73. The sound coming out of the leakage hole 73 enters the cavity 75, so that the sound crosstalk to the sound outlet hole 631 can be reduced, and the hearing feeling can be improved.
The speaker box 100 provided by the invention has the following beneficial effects:
the diameter of the leakage hole 73 is small, ideally, the leakage hole does not make sound, but in practical tests, a small part of sound is still found to reach the leakage hole 73, so that the components of higher harmonics are increased, the auditory sensation is reduced, in order to overcome the defect, the invention adopts a novel leakage structure 7, the leakage structure 7 comprises a leakage hole 73 which is arranged through the top wall 11 of the upper cover 1, a sealing cover 71 which is arranged above the upper cover 1, and a cavity 75 enclosed by the sealing cover 71 and the top wall 11 of the upper cover 1, the leakage hole 73 communicates the cavity 75 and the front cavity 6, the leakage hole 73 is matched with the cavity 75, so that on one hand, resonance of the front cavity 6 is weakened, higher harmonic components are reduced, and listening quality is improved, and on the other hand, sound coming out of the leakage hole 73 enters the cavity 75 and does not generate crosstalk to sound coming out of the sound outlet hole 631.
Example two
Referring to fig. 4 and 5 in combination, fig. 4 is a schematic perspective assembly view of a second embodiment of a speaker box provided by the present invention, and fig. 5 is a cross-sectional view of the speaker box shown in fig. 4 along the line a-a.
The second embodiment is substantially the same as the first embodiment, and the speaker box 200 is different from the speaker box 100 in that the leakage structure 7 further includes a sound absorbing material 77 covering the leakage hole 73, and is configured to absorb higher harmonics reaching the leakage hole 73 and reduce crosstalk to the sound of the sound outlet hole 631. The sound absorbing material 77 may cover the end of the leakage hole 73 communicating with the cavity 75 and be located on the surface of the top wall 11 facing the bottom plate 711, or the sound absorbing material 77 may cover the end of the leakage hole 73 communicating with the front cavity 6 and be located on the surface of the top wall 11 away from the bottom plate 711 of the sealing cover 71, or it may be filled in the leakage hole 73. The sound-absorbing material 77 is preferably a mesh fabric, and the mesh fabric is mainly woven by polyester and terylene according to a preset proportion by a high-precision loom. In this embodiment, the sound absorbing material 77 covers an end of the leakage hole 73 communicating with the cavity 75 and is located on a surface of the top wall 11 facing the bottom plate 711.
The speaker box 200 provided by the invention has the following beneficial effects: because the wavelength of the higher harmonic is short, the higher harmonic is easy to enter the leakage hole 73, in order to further reduce the influence of the higher harmonic coming out from the leakage hole 73 on the tone quality of the loudspeaker box 200, the invention is provided with the sound absorption material 77 covering the leakage hole 73, the sound absorption material 77 can absorb the higher harmonic reaching the leakage hole 73, reduce the crosstalk to the sound of the sound outlet hole 631, and ensure the output tone quality; simultaneously through setting up sound absorbing material 77 also can reduce originally leakage hole 73 is to the requirement of sound wave barrier in the aspect of the size, reduces the preparation leakage hole 73's the processing degree of difficulty.
Referring to fig. 6, 7 and 8, fig. 6 is a graph comparing a total harmonic distortion curve of the speaker box of fig. 1 with a total harmonic distortion curve of a speaker box of the prior art, fig. 7 is a graph comparing a frequency response curve of the speaker box of fig. 1 with a frequency response curve of a speaker box of the prior art, and fig. 8 is a graph comparing a higher harmonic curve of the speaker box of fig. 1 with a higher harmonic curve of a leakage structure of a speaker box of the related art having only leakage holes.
Fig. 6 to 8 show the results of the overall test performed when the sound outlet 631 has a large resistance, in which a curve i in fig. 6 shows the total harmonic distortion curve of the speaker box 100 according to the present invention, and a curve ii shows the total harmonic distortion curve of the speaker box of the prior art, as can be seen from fig. 6, the speaker box 100 provided by the present embodiment has a low mid-frequency distortion; fig. 7 shows a curve i representing a frequency response curve of the speaker box 100 according to the present invention, and a curve ii representing a frequency response curve of the speaker box of the prior art, and it can be seen from fig. 7 that the high frequency resonance of the speaker box 100 provided by the present solution is weakened, the resonance peak is reduced, the high frequency component is reduced, and the hearing becomes good; fig. 8 shows a curve of higher harmonics of the speaker box 100 according to the present invention, and a curve of higher harmonics of the leakage structure of the speaker box of the related art, which has only the leakage hole, as shown in fig. 8, it can be seen that the higher harmonics of the speaker box 100 provided by the present embodiment are significantly reduced, and the listening feeling is significantly improved, while no crosstalk is generated to the sound of the sound outlet hole 631.
The working principle of the loudspeaker box is as follows: when the voice coil 433 receives an external current signal, the voice coil 433 is subjected to Lorentz force in a magnetic field to generate displacement. Along with the current signal constantly transform the direction that voice coil 433 received for the lorentz force that voice coil 433 received also corresponds transform direction, so make voice coil 433 reciprocating motion, thereby drive vibrating diaphragm 431 vibration sound, pass through sound outlet 631 spreads out. When the sound outlet channel 63 or the sound outlet hole 631 has a large resistance or damping, the middle frequency distortion of the loudspeaker box will increase, which will seriously affect the listening quality of the loudspeaker box, and at the same time, due to the resonance of the front cavity of the loudspeaker box, the high frequency components and high frequency noise will be amplified, which will affect the listening feeling. The present invention provides a solution to this drawback by providing a leakage structure 7. The principle is as follows:
where Fh is the high-frequency resonance frequency, Ca is the compliance, Mp is the equivalent acoustic mass, V represents the front cavity volume, ρ0Is the density of air, C0Is the speed of sound in air.
The leakage hole 75 in the leakage structure 7 destroys the integrity of V and weakens the resonance of the front cavity 6, the leakage hole 75 is communicated with the cavity 73, and the cavity 73 is communicated with the external environment and has a larger volume, so that on one hand, the pressure equalizing effect can be achieved, when the sound outlet hole 631 has larger resistance or damping, the influence caused by air nonlinearity can be partially reduced, and meanwhile, the vibration of the diaphragm 431 is reduced; on the other hand, by providing the cavity 73, the higher harmonics reaching the leakage hole 75 enter the cavity 73, and crosstalk is not generated in the sound out of the sound outlet hole 631, thereby improving the listening quality.
In addition, the invention also provides electronic equipment which comprises the loudspeaker box in the embodiment. Please refer to the above embodiments, the structure and connection relationship of the speaker box will not be described herein.
In practical application, the electronic device provided by the invention can be a mobile phone, a tablet computer and the like. The present invention is not limited to this, as long as the speaker box can be used.
While the foregoing is directed to embodiments of the present invention, it will be understood by those skilled in the art that various changes may be made without departing from the spirit and scope of the invention.

Claims (8)

1. A loudspeaker box comprises an upper cover, a lower cover and a loudspeaker monomer, wherein the lower cover is assembled with the upper cover to form an accommodating space, the loudspeaker monomer is accommodated in the accommodating space and comprises a vibrating diaphragm, the upper cover and the vibrating diaphragm enclose a front sound cavity, the loudspeaker box is also provided with a sound outlet channel which is communicated with the front sound cavity and used for leading sound generated by the loudspeaker monomer out of the loudspeaker box, the front sound cavity and the sound outlet channel jointly form a front cavity, the loudspeaker box is characterized by further comprising a leakage structure, the leakage structure comprises a sealing cover arranged above the upper cover and at least one leakage hole which penetrates through the upper cover, the upper cover comprises a top wall and an upper cover side wall which extends from the top wall in the direction far away from the top wall, the leakage hole penetrates through the top wall, the upper cover and the sealing cover enclose a cavity, the leakage hole communicates the front cavity and the cavity.
2. The speaker box as claimed in claim 1, wherein the sound outlet channel has an opening at one end communicating with the front sound chamber and an opening at the other end communicating with the external environment, and the sound outlet is located on the sidewall of the upper cover.
3. A loudspeaker enclosure as claimed in claim 2, wherein: the shape of the leakage hole is round or square or triangle or polygon.
4. A loudspeaker enclosure as claimed in claim 2, wherein: the number of the leakage holes is one, and the leakage holes are formed in the top wall corresponding to the front sound cavity.
5. A loudspeaker enclosure as claimed in claim 2, wherein: the leakage structure further includes a sound absorbing material covering the leakage hole.
6. A loudspeaker enclosure as claimed in claim 5, wherein: the sound absorption material covers one end of the leakage hole communicated with the cavity and is positioned on the surface of the top wall facing the sealing cover.
7. A loudspeaker enclosure as claimed in claim 2, wherein: the sealing cover comprises a bottom plate and a sealing cover side wall, the bottom plate and the sealing cover side wall are arranged at intervals, the sealing cover side wall extends towards the top wall from the bottom plate, the sealing cover side wall is abutted to the top wall, and the top wall, the bottom plate and the sealing cover side wall enclose the cavity.
8. An electronic device, characterized in that it comprises a loudspeaker enclosure according to any of claims 1-7.
CN201610576650.XA 2016-07-20 2016-07-20 Speaker box and electronic equipment with same Active CN106162459B (en)

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CN106162459B true CN106162459B (en) 2020-02-04

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Families Citing this family (6)

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Publication number Priority date Publication date Assignee Title
CN107454526B (en) * 2017-09-08 2019-08-27 Oppo广东移动通信有限公司 Electroacoustic component, electroacoustic device and mobile terminal
CN108419188B (en) * 2018-02-12 2020-06-02 歌尔股份有限公司 Loudspeaker module
CN110177323B (en) * 2019-05-15 2021-01-08 维沃移动通信有限公司 Loudspeaker and terminal equipment
CN110475186B (en) * 2019-08-20 2021-01-26 华勤技术股份有限公司 Shell and electronic equipment comprising same
CN110536190A (en) * 2019-08-30 2019-12-03 歌尔股份有限公司 A kind of sounding device and electronic product
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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CN101765039A (en) * 2009-11-19 2010-06-30 王强 Wine bucket shaped loudspeaker box
CN201904901U (en) * 2010-12-29 2011-07-20 易力声科技(深圳)有限公司 Earphone with two sound cavities
CN202103729U (en) * 2011-06-30 2012-01-04 浪潮乐金数字移动通信有限公司 Mobile terminal having dual-front sound cavity
CN103297904A (en) * 2013-05-18 2013-09-11 歌尔声学股份有限公司 Double-vibrating-diaphragm speaker module
CN103458326A (en) * 2013-08-27 2013-12-18 上海创功通讯技术有限公司 Horn seal structure and processing method thereof
CN205081906U (en) * 2015-07-31 2016-03-09 瑞声光电科技(常州)有限公司 Loudspeaker box

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101765039A (en) * 2009-11-19 2010-06-30 王强 Wine bucket shaped loudspeaker box
CN201904901U (en) * 2010-12-29 2011-07-20 易力声科技(深圳)有限公司 Earphone with two sound cavities
CN202103729U (en) * 2011-06-30 2012-01-04 浪潮乐金数字移动通信有限公司 Mobile terminal having dual-front sound cavity
CN103297904A (en) * 2013-05-18 2013-09-11 歌尔声学股份有限公司 Double-vibrating-diaphragm speaker module
CN103458326A (en) * 2013-08-27 2013-12-18 上海创功通讯技术有限公司 Horn seal structure and processing method thereof
CN205081906U (en) * 2015-07-31 2016-03-09 瑞声光电科技(常州)有限公司 Loudspeaker box

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