CN107396256A - Loudspeaker enclosure - Google Patents

Loudspeaker enclosure Download PDF

Info

Publication number
CN107396256A
CN107396256A CN201710536961.8A CN201710536961A CN107396256A CN 107396256 A CN107396256 A CN 107396256A CN 201710536961 A CN201710536961 A CN 201710536961A CN 107396256 A CN107396256 A CN 107396256A
Authority
CN
China
Prior art keywords
housing
loudspeaker enclosure
cover plate
elastic cover
hole
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.)
Pending
Application number
CN201710536961.8A
Other languages
Chinese (zh)
Inventor
秦鹏
施胜荣
张哲�
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AAC Technologies Pte Ltd
Original Assignee
AAC Technologies Pte Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by AAC Technologies Pte Ltd filed Critical AAC Technologies Pte Ltd
Priority to CN201710536961.8A priority Critical patent/CN107396256A/en
Publication of CN107396256A publication Critical patent/CN107396256A/en
Pending legal-status Critical Current

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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
    • H04R1/00Details of transducers, loudspeakers or microphones
    • H04R1/20Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
    • H04R1/28Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2807Enclosures comprising vibrating or resonating arrangements
    • H04R1/2811Enclosures comprising vibrating or resonating arrangements for loudspeaker transducers
    • 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

Abstract

The invention provides a kind of loudspeaker enclosure, including housing and the sounding monomer including vibrating diaphragm being contained in housing, vibrating diaphragm is arranged at intervals to form the preceding operatic tunes with housing, the loudspeaker enclosure also includes the operatic tunes and extraneous passage of speaking before connection, the preceding operatic tunes and passage of speaking collectively form the ante-chamber of the loudspeaker enclosure, the position that ante-chamber is corresponded on housing is provided with least two through holes for running through housing, the loudspeaker enclosure also includes on housing and the elastic cover plate of through hole is completely covered, elastic cover plate includes the moving part for covering each through hole and the fixed part being connected on housing from moving part extension, the Young's modulus or intensity of elastic cover plate are less than the Young's modulus or intensity of housing, the moving part of elastic cover plate is used for the energy for absorbing the vibration under particular resonant frequency.Compared with correlation technique, loudspeaker enclosure distortion of the invention is small and acoustical behavior is good.

Description

Loudspeaker enclosure
【Technical field】
The present invention relates to acoustic-electric field, more particularly to a kind of loudspeaker enclosure for applying to portable type electronic product.
【Background technology】
With the arrival in mobile Internet epoch, the quantity of Intelligent mobile equipment constantly rises.And in numerous mobile devices Among, mobile phone is undoubtedly most common, most portable mobile terminal device.At present, the function of mobile phone is extremely various, and one of them is just It is the music function of high-quality, therefore, the loudspeaker enclosure for playing sound is widely applied Intelligent mobile equipment till now Among.
The loudspeaker enclosure of correlation technique includes housing, the sounding monomer being contained in the housing, through the shell The through hole that body is set and the cover plate for being covered on the through hole, the sounding monomer includes the vibrating diaphragm for vibration sounding, described to shake Film is arranged at intervals to form the preceding operatic tunes with the housing, and the through hole is set with the vibrating diaphragm face, and the loudspeaker enclosure also includes The passage of speaking that the preceding operatic tunes is in communication with the outside, the preceding operatic tunes collectively form the loudspeaker enclosure with the passage of speaking Ante-chamber.
However, in the loudspeaker enclosure of correlation technique, the inwall of the ante-chamber is hard plastic or metal material shape Into rigid walls, the damping of rigid walls is small and Oscillation Amplitude is small, and emittance is limited, can not effectively pass the cavity energy of ante-chamber Broadcast is gone, thus can not absorb the energy of assigned frequency.Therefore, the structure easily cause the ante-chamber rigid walls produce resonate into And cause the sounding distortion of the loudspeaker enclosure, influence the acoustical behavior of the loudspeaker enclosure.
Therefore, a kind of new loudspeaker enclosure must be provided by, which having in fact, solves above-mentioned technical problem.
【The content of the invention】
The good loudspeaker enclosure of small and acoustical behavior it is an object of the invention to provide a kind of distortion.
In order to achieve the above object, the invention provides a kind of loudspeaker enclosure, including housing and it is contained in the housing Sounding monomer, the sounding monomer includes the vibrating diaphragm for vibration sounding, and the vibrating diaphragm is arranged at intervals to be formed with the housing The preceding operatic tunes, the loudspeaker enclosure also include connecting the preceding operatic tunes and extraneous passage of speaking, and the preceding operatic tunes is spoken with described Passage collectively forms the ante-chamber of the loudspeaker enclosure, and the position that the ante-chamber is corresponded on the housing is provided with through housing at least Two through holes, the loudspeaker enclosure also include on the housing and the elastic cover plate of the through hole, the bullet are completely covered Property the cover plate moving part that includes the covering each through hole and fixation being connected on the housing from moving part extension Part, the Young's modulus or intensity of the elastic cover plate are less than the Young's modulus or intensity of the housing, the elastic cover plate Moving part is used for the energy for absorbing the vibration under particular resonant frequency.
Preferably, the housing includes lower cover and the upper lid connect with the lower cover lid, and the passage of speaking is formed at described Upper lid, the vibrating diaphragm and the upper lid surround the preceding operatic tunes jointly, and the sounding monomer is total to the upper lid and the lower cover It is same to surround the back cavity relative with the ante-chamber.
Preferably, the through hole is set through the upper lid, and is set with the vibrating diaphragm face.
Preferably, the elastic cover plate is formed with the housing by double-shot moulding or hot pressing or stickup or ultrasonic bonding It is fixedly connected.
Preferably, the through hole is in array distribution.
Preferably, the housing also includes the mounting hole set around the through hole, the fixed part of the elastic cover plate Provided with the projection coordinated with the mounting hole.
Preferably, the elastic cover plate absorbs the energy for the vibration that resonant frequency is 500~15000Hz.
Preferably, the elastic cover plate absorbs the energy for the vibration that resonant frequency is 3000~9000Hz.
Preferably, the elastic cover plate is made up of TPU or MCP or silica gel.
Compared with correlation technique, the position that loudspeaker enclosure of the invention corresponds to housing the ante-chamber is provided with through housing In some through holes of array distribution, and the Young's modulus for being covered on the through hole completely or intensity is set to be less than the poplar of the housing The elastic cover plate of family name's modulus or intensity, for absorbing the energy of the vibration under particular resonant frequency, so as to weaken the loudspeaker The resonance effect of case and its distortion is reduced, and then improve the acoustical behavior of the loudspeaker enclosure.
【Brief description of the drawings】
Technical scheme in order to illustrate the embodiments of the present invention more clearly, make required in being described below to embodiment Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for For those of ordinary skill in the art, on the premise of not paying creative work, it can also be obtained according to these accompanying drawings other Accompanying drawing, wherein:
Fig. 1 is a kind of dimensional structure diagram of embodiment of loudspeaker enclosure of the present invention;
Fig. 2 is Fig. 1 part-structure exploded view;
Fig. 3 is the cut-away view of the line A-A along Fig. 1;
Fig. 4 is the part-structure schematic diagram of another embodiment of loudspeaker enclosure of the present invention;
Fig. 5 is the structural representation of elastic cover plate in Fig. 4;
Fig. 6 is the frequency response curve comparison diagram of loudspeaker enclosure of the present invention and the rigid walls loudspeaker enclosure of correlation technique;
Fig. 7 is the total harmonic distortion curve comparison figure of loudspeaker enclosure of the present invention and the rigid walls loudspeaker enclosure of correlation technique.
【Embodiment】
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 Site preparation describes, it is clear that described embodiment is only the part of the embodiment of the present invention, rather than whole embodiments.It is based on Embodiment in the present invention, those of ordinary skill in the art are obtained all other under the premise of creative work is not made Embodiment, belong to the scope of protection of the invention.
Embodiment one
Please refer to Fig. 1-3, wherein, Fig. 1 is a kind of dimensional structure diagram of embodiment of loudspeaker enclosure of the present invention; Fig. 2 is Fig. 1 part-structure exploded view;Fig. 3 is the cut-away view of the line A-A along Fig. 1.The invention provides a kind of loudspeaker enclosure 100, including housing 10, sounding monomer 3, passage 4 of speaking, through hole 5 and elastic cover plate 6.Wherein, the housing 10 include lower cover 1, Lid is connected to the upper lid 2 of the lower cover 1.
The upper lid 2 surrounds receiving space 20 jointly with the lower cover 1.The sounding monomer 3 is fixed and is contained in the receipts Hold in space 20.The sounding monomer 3 includes the vibrating diaphragm 31 for vibration sounding, and the vibrating diaphragm 31 is set with the upper interval of lid 2 Put and enclose to form the preceding operatic tunes 7 jointly.The passage 4 of speaking is formed at the upper lid 2.It is described speak passage 4 by the preceding operatic tunes 7 with External world's connection, for forming side vocal structure.That is, in present embodiment, the sounding monomer 3 houses sky by described Between 20 be separated into ante-chamber 21 and the back cavity 22 relative with the ante-chamber 21, wherein, the ante-chamber 21 includes the preceding operatic tunes 7 and institute Passage 4 of speaking is stated, the sounding monomer 3 surrounds the back cavity 22 jointly with the upper lid 2 and the lower cover 1.
The position that the through hole 5 corresponds to the ante-chamber 21 on the housing 10 is formed, through hole 5 at least provided with two, And it is preferred that being in array distribution, elastic cover plate 6 is located on the housing 10 and the through hole 5 is completely covered.In the present embodiment, The through hole 5 is formed through the upper lid 2, and the through hole 5 is set with the face of vibrating diaphragm 31.
Specifically, the elastic cover plate 6 includes covering the moving part 61 of each through hole 5 and prolonged from the moving part 61 Stretch the fixed part 62 being connected on the housing 10.The Young's modulus or intensity of the elastic cover plate 6 are less than the housing 10 Young's modulus or intensity.The moving part 61 of the elastic cover plate 6 is used for the energy for absorbing the vibration under particular resonant frequency.
Compared to an independent macropore is set, area is larger, it is necessary to material has certain intensity and thickness, is otherwise easy to Collapse or amplitude is bigger than normal, cause bottoming or mechanical failure, the structure of multiple through holes 5 of array distribution can play good branch Support acts on, and material can be made into thin, saves segment space.
In present embodiment, multiple through holes 5 are set in two rows, and often row includes multiple through holes 5, and are collectively forming matrix point Cloth.
Replace the rigid walls of back cavity in correlation technique by the elastic cover plate 6 in the present invention, and the elastic cover plate 6 In the presence of a resonant frequency, by design, when the resonant frequency of the elastic cover plate 6 is adjusted into a certain frequency, in resonance frequency Near rate, the elastic cover plate 6 can produce stronger vibration, and in 100 sounding of loudspeaker enclosure, the sounding monomer 3 shakes It is dynamic, compress the air in the ante-chamber 21 and produce energy, energy driving elastic cover plate 6 vibrates, so as to consume the ante-chamber Energy in 21, the elastic cover plate 6 preferably vibrate under its resonant frequency, and now oscillation intensity reaches maximum, so as to More energy are consumed, and then absorb the purpose of the energy of the vibration near assigned frequency;In addition, pass through the elastomeric cap Plate 6 substitutes rigid walls and can pass to medium density in the ante-chamber 21 outside the ante-chamber 21, and then is raised one's voice described in reduction The covibration of device case 100 and improvement distortion.
It is designed especially by material, area, shape and thickness to the elastic cover plate 6 to realize above-mentioned purpose. In present embodiment, the elastic cover plate 6 is made using the relatively low material of Young's modulus or intensity, at least below the housing 10 Young's modulus or intensity, for example be made using by TPU or MCP or silica gel, then pass through hot pressing or stickup or ultrasonic bonding shape Into the housing 10 is fixedly connected on, certainly, the elastic cover plate 6 and the housing 10 or integrated formed structure, this is all It is feasible.Elastic cover plate 6 turns into the part-structure of ante-chamber 21, absorbs the energy near the resonance peak of ante-chamber 21, reaches drop Low resonance peak, improve distortion, improve the loudspeaker enclosure 100 acoustical behavior purpose.Elastic cover plate 6 can absorb as needed Resonant frequency range be designed adjustment.Specific resonant frequency is the resonant frequency range that the needs set absorb.
Referring to Fig. 6, be loudspeaker enclosure of the present invention and the frequency response curve comparison diagram of the rigid walls loudspeaker enclosure of correlation technique, Wherein curve a represents to represent raising for the present invention using the frequency response curve of loudspeaker enclosure corresponding to rigid walls, curve b in correlation technique The frequency response curve of sound device case.As seen from Figure 6, the resonance peak of loudspeaker enclosure 100 of the present invention substantially reduces, and can reduce covibration.
Referring to Fig. 7, it is loudspeaker enclosure of the present invention and the total harmonic distortion curve of the rigid walls loudspeaker enclosure of correlation technique Comparison diagram, wherein curve c represent to use the total harmonic distortion curve of loudspeaker enclosure corresponding to rigid walls, curve d in correlation technique Represent the total harmonic distortion curve of the loudspeaker enclosure of the present invention.As seen from Figure 7, the distortion spike of loudspeaker enclosure 100 of the present invention is bright It is aobvious to reduce, distortion can be improved.
In the loudspeaker enclosure 100 of the present invention, the resonant frequency of the elastic cover plate 6 is 500~15000Hz;I.e. described bullet Property cover plate 6 absorb resonant frequency be 500~15000Hz vibration energy.
When the resonant frequency of the elastic cover plate 6 is 500~1500Hz, the low frequency that can reduce the loudspeaker enclosure 100 is humorous 3 distortions near 2 distortions, and f0/3 near distortion, corresponding f0/2 near vibration frequency f0 etc.;
When the resonant frequency of the elastic cover plate 6 is 1500~3000Hz, the 2000Hz of the loudspeaker enclosure 100 can be reduced 3 distortions near neighbouring intermediate frequency distortion, corresponding 1000Hz 2 distortions, and 667Hz nearby etc.;
When the resonant frequency of the elastic cover plate 6 is 3000~9000Hz, the harmonic high frequency of the loudspeaker enclosure 100 can be reduced Shake the distortion near peak Fh, 3 distortions near corresponding Fh/2 2 distortions, and Fh/3 nearby etc.;
When the resonant frequency of the elastic cover plate 6 is 9000~15000Hz, the high frequency of the loudspeaker enclosure 100 can be reduced 3 distortions near distortion, corresponding 6000Hz 2 distortions, and 4000Hz nearby near 12000Hz etc..
It is more excellent in present embodiment for implementation data and effect with reference to Fig. 6 and Fig. 7, the elastic cover plate 6 Resonant frequency is 3000~9000Hz, and now the reduction distortion effect of the loudspeaker enclosure 100 is more preferable.
Embodiment two
Fig. 4 and Fig. 5 are please referred to, is the part-structure schematic diagram of another embodiment of loudspeaker enclosure of the present invention.This Embodiment and embodiment one are essentially identical, unlike:Housing 10 ' (being specially upper lid 2 ' in the present embodiment) also includes surrounding The mounting hole 51 ' that the through hole 5 ' is set, the elastic cover plate 6 ' include the moving part 61 ' for covering each through hole 5 ' and from institutes The fixed part 62 ' that moving part 61 ' is connected on the upper lid 2 ' is stated, the fixed part 62 ' is provided with and the peace Fill the projection 621 ' that hole 51 ' coordinates.
In addition to above-mentioned difference, remaining structure is identical with embodiment one, will not be repeated here.
Compared with correlation technique, the position that loudspeaker enclosure of the invention corresponds to housing the ante-chamber is provided with through housing In some through holes of array distribution, and the Young's modulus for being covered on the through hole completely or intensity is set to be less than the poplar of the housing The elastic cover plate of family name's modulus or intensity, for absorbing the energy of the vibration under particular resonant frequency, so as to weaken the loudspeaker The resonance effect of case and its distortion is reduced, and then improve the acoustical behavior of the loudspeaker enclosure.
Above-described is only embodiments of the present invention, it should be noted here that for one of ordinary skill in the art For, without departing from the concept of the premise of the invention, improvement can also be made, but these belong to the protection model of the present invention Enclose.

Claims (9)

1. a kind of loudspeaker enclosure, including housing and the sounding monomer being contained in the housing, the sounding monomer is including being used for The vibrating diaphragm of vibration sounding, the vibrating diaphragm are arranged at intervals to form the preceding operatic tunes with the housing, and the loudspeaker enclosure also includes connection institute The operatic tunes and extraneous passage of speaking, the preceding operatic tunes collectively form the ante-chamber of the loudspeaker enclosure with the passage of speaking before stating, Characterized in that, the position that the ante-chamber is corresponded on the housing is provided with least two through holes through housing, the loudspeaker Case also includes on the housing and the elastic cover plate of the through hole is completely covered, and it is each logical that the elastic cover plate includes covering The moving part in hole and the fixed part being connected on the housing from moving part extension, the poplar of the elastic cover plate Family name's modulus or intensity are less than the Young's modulus or intensity of the housing, and the moving part of the elastic cover plate is specific humorous for absorbing The energy of vibration under vibration frequency.
2. loudspeaker enclosure according to claim 1, it is characterised in that the housing includes lower cover and connect with the lower cover lid Upper lid, the passage of speaking is formed at the upper lid, and the vibrating diaphragm and the upper lid surround the preceding operatic tunes, the hair jointly Sound monomer surrounds the back cavity relative with the ante-chamber jointly with the upper lid and the lower cover.
3. loudspeaker enclosure according to claim 2, it is characterised in that the through hole is set through the upper lid, and with The vibrating diaphragm face is set.
4. loudspeaker enclosure according to claim 1, it is characterised in that the elastic cover plate passes through double-colored note with the housing Modeling or hot pressing or stickup or ultrasonic bonding form a fixed connection.
5. loudspeaker enclosure according to claim 1, it is characterised in that the through hole is in array distribution.
6. loudspeaker enclosure according to claim 1, it is characterised in that the housing also includes what is set around the through hole Mounting hole, the fixed part of the elastic cover plate are provided with the projection coordinated with the mounting hole.
7. according to the loudspeaker enclosure described in claim 1-6 any one, it is characterised in that the elastic cover plate absorbs resonance frequency Rate is the energy of 500~15000Hz vibration.
8. loudspeaker enclosure according to claim 7, it is characterised in that the elastic cover plate absorb resonant frequency be 3000~ The energy of 9000Hz vibration.
9. loudspeaker enclosure according to claim 1, it is characterised in that the elastic cover plate is TPU or MCP or silica gel system Into.
CN201710536961.8A 2017-07-04 2017-07-04 Loudspeaker enclosure Pending CN107396256A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710536961.8A CN107396256A (en) 2017-07-04 2017-07-04 Loudspeaker enclosure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710536961.8A CN107396256A (en) 2017-07-04 2017-07-04 Loudspeaker enclosure

Publications (1)

Publication Number Publication Date
CN107396256A true CN107396256A (en) 2017-11-24

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Country Status (1)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108282723A (en) * 2017-12-21 2018-07-13 瑞声科技(新加坡)有限公司 Loudspeaker enclosure
CN109068230A (en) * 2018-08-10 2018-12-21 瑞声科技(南京)有限公司 Loudspeaker enclosure
WO2021031485A1 (en) * 2019-08-20 2021-02-25 歌尔股份有限公司 Acoustic device and electronic apparatus
WO2021031486A1 (en) * 2019-08-20 2021-02-25 歌尔股份有限公司 Acoustic device and electronic apparatus

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203574855U (en) * 2013-11-14 2014-04-30 歌尔声学股份有限公司 Loudspeaker module
CN204316744U (en) * 2014-12-26 2015-05-06 歌尔声学股份有限公司 Loud speaker module
CN204408623U (en) * 2015-03-06 2015-06-17 歌尔声学股份有限公司 A kind of speaker unit
CN205847524U (en) * 2016-07-20 2016-12-28 瑞声科技(新加坡)有限公司 Loudspeaker enclosure
CN206061094U (en) * 2016-07-20 2017-03-29 瑞声科技(新加坡)有限公司 Loudspeaker enclosure

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203574855U (en) * 2013-11-14 2014-04-30 歌尔声学股份有限公司 Loudspeaker module
CN204316744U (en) * 2014-12-26 2015-05-06 歌尔声学股份有限公司 Loud speaker module
CN204408623U (en) * 2015-03-06 2015-06-17 歌尔声学股份有限公司 A kind of speaker unit
CN205847524U (en) * 2016-07-20 2016-12-28 瑞声科技(新加坡)有限公司 Loudspeaker enclosure
CN206061094U (en) * 2016-07-20 2017-03-29 瑞声科技(新加坡)有限公司 Loudspeaker enclosure

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108282723A (en) * 2017-12-21 2018-07-13 瑞声科技(新加坡)有限公司 Loudspeaker enclosure
CN108282723B (en) * 2017-12-21 2020-06-16 瑞声科技(新加坡)有限公司 Loudspeaker box
CN109068230A (en) * 2018-08-10 2018-12-21 瑞声科技(南京)有限公司 Loudspeaker enclosure
WO2021031485A1 (en) * 2019-08-20 2021-02-25 歌尔股份有限公司 Acoustic device and electronic apparatus
WO2021031486A1 (en) * 2019-08-20 2021-02-25 歌尔股份有限公司 Acoustic device and electronic apparatus

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