CN107948888A - Loudspeaker enclosure - Google Patents

Loudspeaker enclosure Download PDF

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Publication number
CN107948888A
CN107948888A CN201711183726.3A CN201711183726A CN107948888A CN 107948888 A CN107948888 A CN 107948888A CN 201711183726 A CN201711183726 A CN 201711183726A CN 107948888 A CN107948888 A CN 107948888A
Authority
CN
China
Prior art keywords
elastic
loudspeaker enclosure
housing
hole
covered
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
CN201711183726.3A
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Chinese (zh)
Inventor
秦鹏
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 CN201711183726.3A priority Critical patent/CN107948888A/en
Publication of CN107948888A publication Critical patent/CN107948888A/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
    • 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
    • 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
    • H04R2400/00Loudspeakers
    • H04R2400/11Aspects regarding the frame of loudspeaker transducers

Abstract

The present embodiments relate to acoustic-electric field, discloses a kind of loudspeaker enclosure.The loudspeaker enclosure includes housing and the sounding monomer being contained in housing, sounding monomer includes the vibrating diaphragm for vibration sounding, vibrating diaphragm is arranged at intervals to form the preceding operatic tunes with housing, loudspeaker enclosure further 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 loudspeaker enclosure, the position that ante-chamber is corresponded on housing is provided through at least two through holes of housing, each through hole is covered by one piece of elastic wall, the elastic wall covered at least two through holes has different resonant frequencies, and every piece of elastic wall is used for the vibration for absorbing different frequency range.The loudspeaker enclosure can be effectively improved the problem of audio distortions, lift acoustical behavior.

Description

Loudspeaker enclosure
Technical field
Embodiment of the present invention is related to acoustic-electric field, more particularly to a kind of loudspeaker enclosure for portable electronic product.
Background technology
With the arrival in mobile Internet epoch, the use of Intelligent mobile equipment is more and more.And in numerous intelligent mobiles Among equipment, it is one of most important function that sound, which plays, and this function is typically to be realized by loudspeaker enclosure.
The loudspeaker enclosure of the prior art includes housing, the sounding monomer being contained in the housing, the sounding list Body includes the vibrating diaphragm for vibration sounding, and the vibrating diaphragm is arranged at intervals to form the preceding operatic tunes with the housing, and the loudspeaker enclosure is also Sound passage is led including what the preceding operatic tunes was in communication with the outside, the preceding operatic tunes collectively forms described raise one's voice with the sound passage of leading The ante-chamber of device case.
But the inventors found that at least there are the following problems in the prior art:Raise one's voice described in of the prior art Device case, the inner wall of its ante-chamber are the rigid walls that hard plastic or metal material are formed, and the damping of rigid walls is small and Oscillation Amplitude Small, emittance is limited, therefore the structure easily causes the audio distortions that the loudspeaker enclosure plays, this will seriously affect described raise The acoustical behavior of sound device case.
Therefore, it is necessary to a kind of new loudspeaker enclosure is provided to solve the above problems.
The content of the invention
The purpose of embodiment of the present invention is to provide a kind of loudspeaker enclosure, it can be effectively improved asking for audio distortions Topic, lifts acoustical behavior.
In order to solve the above technical problems, embodiments of the present invention provide a kind of loudspeaker enclosure, including housing and collecting In the sounding monomer in housing, which includes the vibrating diaphragm for being used for vibration sounding, and vibrating diaphragm and housing are arranged at intervals before being formed The operatic tunes, loudspeaker enclosure further include the operatic tunes and extraneous passage of speaking before connection, and the preceding operatic tunes and passage of speaking collectively form loudspeaker The ante-chamber of case, the position that ante-chamber is corresponded on housing are provided through at least two through holes of housing, and each through hole is by one piece of bullet Property wall covering, the elastic wall covered at least two through holes has different resonant frequencies, and every piece of elastic wall is for absorbing difference The vibration of frequency range.
Embodiment of the present invention in terms of existing technologies, when the air in loudspeaker enclosure ante-chamber is produced because of vibrating diaphragm sounding During raw vibration, passively vibration can occur under the air driven in ante-chamber for the elastic wall with different resonant frequencies, thus consume The vibrational energy of different frequency range in loudspeaker enclosure ante-chamber, simultaneously also by the vibration of elastic wall itself by different frequency range in ante-chamber Vibrational energy propagate to the outside of loudspeaker enclosure so that greatly reduce loudspeaker enclosure caused by diaphragm oscillations sounding altogether Shake phenomenon, be effectively improved audio distortions problem, improve acoustical behavior.
In addition, at least two through holes are arranged at the position of the operatic tunes before being corresponded on housing.
In addition, at least two through holes are arranged at the position of corresponding passage of speaking on housing.
In addition, at least two through holes are separately positioned on before being corresponded on housing corresponds to passage of speaking on the position of the operatic tunes and housing Position.
In addition, the elastic wall covered at least two through holes has different areas.
In addition, the elastic wall covered at least two through holes has different thickness.
In addition, the resonant frequency of the elastic wall covered at least two through holes is respectively 4500HZ and 6500HZ.
In addition, the material of elastic wall is TPU, MCP or silica gel.
In addition, elastic wall be fixedly connected on by way of double-shot moulding, hot pressing, stickup or ultrasonic bonding on housing with Cover through hole.
In addition, the resonant frequency of the elastic wall is 500~15000Hz.
In addition, the elastic wall absorption frequency is the vibration of 3000~9000Hz.
Brief description of the drawings
Fig. 1 is the overall structure diagram of loudspeaker enclosure in embodiment of the present invention;
Fig. 2 is the cross-sectional view on A-A directions in Fig. 1;
Fig. 3 is the cross-sectional view on B-B directions in Fig. 1.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with attached drawing to the present invention Each embodiment be explained in detail.However, it will be understood by those skilled in the art that in each embodiment party of the present invention In formula, many ins and outs are proposed in order to make reader more fully understand the present invention.But even if without these ins and outs With many variations based on following embodiment and modification, claimed technical solution of the invention can also be realized.
The first embodiment of the present invention is related to a kind of loudspeaker enclosure 100, as shown in Figs. 1-3, including housing 1 and sounding list Body 2.Sounding monomer 2 is housed in housing 1, including the vibrating diaphragm 21 for vibration sounding.Loudspeaker enclosure 100 further includes an ante-chamber 3, which includes the preceding operatic tunes 31 and passage 32 of speaking, and is formed, gone out wherein the preceding operatic tunes 31 is arranged at intervals by vibrating diaphragm 21 with housing 1 The operatic tunes 31 and the external world before sound passage 32 then connects.
In present embodiment, housing 1, which corresponds to, sets at least two through holes 41,42 for running through housing 1 on the position of ante-chamber 3, Flexible wall 51,52 is covered each by through hole 41,42, when the diaphragm oscillations sounding in loudspeaker enclosure 100, in ante-chamber 3 Air also can constantly vibrate, and elastic wall 51,52 can passively be vibrated because touching the air of vibration at this time, so as to consume The vibrational energy of air in ante-chamber 3, in addition, when elastic wall 51,52 does vibration motion, can pass to a part of vibrational energy The outside of loudspeaker enclosure 100, thus also consumes vibrational energy of the part in ante-chamber 3, so as to greatly reduce loudspeaker The covibration of case 100, effectively improves the problem of dtmf distortion DTMF of sound, improves acoustical behavior.
It should be noted that in present embodiment, at least two pieces of elastic walls 51,52, and elastic wall 51,52 has are set Different resonant frequencies, the elastic wall 51,52 with different resonant frequencies can consume and propagate respectively different frequency range in ante-chamber 3 Vibration, thus, it is possible to widen elastic wall 51,52 absorb vibration frequency bandwidth, reduce loudspeaker enclosure in large-scale frequency range 100 covibration, so that sound quality of the sound for ensureing to play out in loudspeaker enclosure 100 in a broad frequency band.
, below will be with height based on this since the distortion of loudspeaker enclosure 100 caused by covibration mostly occurs in medium-high frequency section Illustrated in case of frequency resonant frequency.
High-frequency resonant frequency is usually 5500Hz or so, if only setting a through hole and one piece of elasticity being covered on through hole Wall, which can only absorb vibration of its own resonant frequency nearby in section (4700~6200Hz sections), but set When putting two through holes 41,42 and being covered each by elastic wall 51,52 with different resonant frequencies, such as by one of elasticity The resonant frequency of wall 51 is designed in 4500Hz or so, and the resonant frequency of another piece of elastic wall 52 is designed in 6500Hz or so, After two pieces of elastic walls 51,52 combine, the absorption to the vibration near 3800~7200Hz frequency separation scopes may finally be reached, It is possible thereby to substantially widen the frequency bandwidth that elastic wall 51,52 absorbs vibration, and in broader high-frequency range, improve and lose True phenomenon.In the present embodiment, the resonant frequency of elastic wall 51 is preferably arranged to 4500HZ, by the resonance of elastic wall 52 Set of frequency is 6500HZ.
It is understood that in present embodiment, by carrying out different resonant frequencies at least two pieces of elastic walls 51,52 The design and combination of numerical value, realize the consumption or propagation of the vibration to some special frequency channels of certain in ante-chamber 3 or frequency point, thus come Distortion of the sound that sends of loudspeaker enclosure 100 in some special frequency channels or frequency point is reduced, and avoids some unwanted frequency responses.
, can be in several ways so that elastic wall 51 and elastic wall 52 have different resonant frequencies in present embodiment Or specific resonant frequency, for example the elastic wall 51,52 covered at least two through holes 41,42 is designed as having difference greatly Small area, different sizes can realize by designing the different sizes of different shapes or the same shape, such as Fig. 1 It is shown, in present embodiment, the less rectangle of area is designed as using by elastic wall 51, elastic wall 52 is designed as area Larger rectangle.
It should be noted that the elastic wall 51,52 that can also be covered by making at least two through holes 41,42 has difference Thickness, to realize the setting of different resonant frequencies, in the present embodiment, as shown in figure 3, elastic wall 52 thickness ratio elasticity The thickness of wall 51 is thick.
Furthermore it is also possible to by making at least two pieces of elastic walls 51,52 that there is different resonance the selection of making material Frequency, wherein, the material for making elastic wall 51,52 has very much, such as TPU (Thermoplastic Urethane, thermoplastic poly Urethane elastomer rubber) material, MCP (monocalcium phosphate, calcium dihydrogen phosphate) material or silica gel material etc., on Stating any one in material or being combined can be used for making at least two pieces of elastic walls 51,52, and realization make elastic wall 51st, 52 purpose with different resonant frequencies.
It is understood that using any one in the above method or any several combination, can realize makes bullet Property wall 51,52 there is different resonant frequencies, rather than be only capable of using single method, naturally it is also possible to using outside enumerating Certain methods realize that, it is necessary to illustrate elastic wall 51, the concrete numerical value of 52 areas and thickness and the specific material of use need To be drawn according to the design to actual conditions.
It should be noted that elastic wall 51,52 can be covered on through hole 41,42 by different structures, such as, elasticity Wall 51,52 is contacted with the inner surface of housing 1 and is covered in from 1 inner surface side of housing on through hole 41,42, or elastic wall 51, 52 are directly embedded in the through hole 41,42 of housing 1, can also be the combination of both structures, specifically can be according to actual feelings The needs of condition make choice come the covered structure different to these types.
In addition, in present embodiment, at least two pieces of elastic walls 51,52 are by double-shot moulding, hot pressing, stickup or ultrasonic wave The mode of welding is fixedly connected on housing, and realizes the covering to through hole 41,42 with above-mentioned any structure type.
Although present embodiment provides raising with two through holes 41,42 and two pieces of elastic walls 51,52 in Fig. 1 Sound device case 100 illustrates, but it should be noted that the quantity of through hole 41,42 and elastic wall 51,52 is not limited to Two pieces, in other modifiable embodiments, the quantity of elastic wall can also be 3 pieces, 4 pieces, 5 pieces it is even more, correspondingly, The quantity of through hole is alternatively 3,4,5 or more.Specifically, can by set in the position of corresponding ante-chamber 33 with Upper through hole, and make to realize covered with one piece of elastic wall on each through hole, the setting of greater number of elastic wall can be with bigger model The frequency range widened elastic wall and absorb vibration enclosed, the spy absorbed in vibration processes is realized by the setting of elastic wall quantity It is different to require.
In present embodiment, different elastic walls 51,52 can also be realized by the setting to elastic wall 51,52 positions Particular/special requirement in structure and absorption vibration processes.Ante-chamber 3 is collectively formed by the preceding operatic tunes 31 and passage 32 of speaking, in this reality Apply in mode, as shown in Figure 2 and Figure 3, through hole 41,42 can be all disposed within the position of the operatic tunes 31 before correspondence on housing 1, work as sounding When the vibrating diaphragm 21 of monomer 2 vibrates, the elastic wall 51,52 before being placed on the operatic tunes 31 can be absorbed near the source close to sound and Vibrational energy before propagation in the operatic tunes 31, thus improves the distortion phenomenon caused by resonance.
It is understood that in another modifiable embodiment of present embodiment, through hole 41,42 and through hole is covered in 41st, the elastic wall 51,52 on 42 can also be all disposed within the position of corresponding passage 32 of speaking on housing 1, when sounding monomer 2 is sent Vibration when being propagated in passage 32 of speaking, elastic wall 51,52, which can absorb consumption and propagate consumption, easily causes harmonic distortion Vibration, thus improves the distortion phenomenon caused by resonance in route of transmission.
In addition, in other modifiable embodiments of present embodiment, through hole 41,42 and the bullet being covered on through hole 41,42 Property wall 51,52 can also be separately positioned on housing 1 it is corresponding before the position of the operatic tunes 31 and the position of corresponding passage 32 of speaking on housing 1 Put, that is, the position of the operatic tunes 31 and passage 32 of speaking is respectively arranged with least one through hole 41 or 42 before corresponding to, it is to be understood that Such a mode has carried out double-absorption near the sound source of vibration and to vibration in the propagation path of vibration, can be effectively improved The audio distortions problem of loudspeaker enclosure 100.It should be noted that said from effect, no matter set in which position elastic wall 51, 52, the effect for being effectively improved distortion can be played, but specific need combined amount and the resonant frequency of setting this ginseng Number etc. is because of usually comprehensive consideration.
Rigid walls in correlation technique are replaced by the elastic wall in the present invention, and the elastic wall is humorous there are one Vibration frequency, by designing, when the resonant frequency of the elastic wall is adjusted to a certain frequency, near resonant frequency, the bullet Property wall can produce stronger vibration, in the loudspeaker enclosure sounding, when sounding monomer vibrates, air in ante-chamber is compressed production Raw energy, the elastic wall vibrations of energy driving, so as to consume the energy in ante-chamber, elastic wall preferably vibrates at the resonant frequency fx, Oscillation intensity reaches maximum at this time, so as to consume more energy;And then absorb the mesh of energy near specific frequency 's;Medium density in the ante-chamber can be passed in addition, substituting rigid walls by the elastic wall outside the ante-chamber, Jin Erda To the covibration for reducing the loudspeaker enclosure and improve distortion.
In the loudspeaker enclosure of the present invention, the resonant frequency of the elastic wall is 500~15000Hz:I.e. described elastic wall Absorb the vibration that resonant frequency is 3000~9000Hz.
When the resonant frequency of the elastic wall is 500~1500Hz, the low-frequency resonant frequency of the loudspeaker enclosure can be reduced 3 distortions near 2 distortions, and f0/3 near distortion, corresponding f0/2 near f0 etc.;
When the resonant frequency of the elastic wall is 1500~3000Hz, near 2000Hz that the loudspeaker enclosure can be reduced 3 distortions near intermediate frequency distortion, corresponding 1000Hz 2 distortions, and 667Hz nearby etc.;
When the resonant frequency of the elastic wall is 3000~9000Hz, the high-frequency resonant peak Fh of the loudspeaker enclosure can be reduced 3 distortions near neighbouring distortion, corresponding Fh/2 2 distortions, and Fh/3 nearby etc.;
When the resonant frequency of the elastic wall is 9000~15000Hz, the high frequency 12000Hz of the loudspeaker enclosure can be reduced 3 distortions near neighbouring distortion, corresponding 6000Hz 2 distortions, and 4000Hz nearby etc..
More preferably, the resonant frequency of the elastic wall is 3000~9000Hz, i.e., the absorption resonant frequency of described elastic wall For 3000~9000Hz vibration when, distortion spike in the total harmonic distortion curve of the loudspeaker enclosure reduces the brightest at this time Aobvious, effect is more preferable.
It will be understood by those skilled in the art that the respective embodiments described above are to realize the specific embodiment of the present invention, And in practical applications, can to it, various changes can be made in the form and details, without departing from the spirit and scope of the present invention.

Claims (11)

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 further includes connection institute The operatic tunes and extraneous passage of speaking before stating, the preceding operatic tunes and the passage of speaking collectively form the ante-chamber of the loudspeaker enclosure, It is characterized in that, the position that the ante-chamber is corresponded on the housing is provided through at least two through holes of the housing, each The through hole is covered by one piece of elastic wall, and the elastic wall covered at least two through hole has different resonance frequencies Rate, every piece of elastic wall are used for the vibration for absorbing different frequency range.
2. loudspeaker enclosure according to claim 1, it is characterised in that at least two through hole is arranged at the housing The position of the upper correspondence preceding operatic tunes.
3. loudspeaker enclosure according to claim 1, it is characterised in that at least two through hole is arranged at the housing Speak described in upper correspondence the position of passage.
4. loudspeaker enclosure according to claim 1, it is characterised in that at least two through hole is separately positioned on the shell The position for passage of speaking described in being corresponded on the position and the housing of the preceding operatic tunes is corresponded on body.
5. according to claim 1-4 any one of them loudspeaker enclosures, it is characterised in that covered at least two through hole The elastic wall has different areas.
6. according to claim 1-4 any one of them loudspeaker enclosures, it is characterised in that covered at least two through hole The elastic wall has different thickness.
7. loudspeaker enclosure according to claim 1, it is characterised in that the elastic wall covered at least two through hole Resonant frequency is respectively 4500HZ and 6500HZ.
8. loudspeaker enclosure according to claim 1, it is characterised in that the material of the elastic wall is TPU, MCP or silica gel.
9. loudspeaker enclosure according to claim 1, it is characterised in that the elastic wall passes through double-shot moulding, hot pressing, stickup Or the mode of ultrasonic bonding is fixedly connected on the housing to cover the through hole.
10. loudspeaker enclosure according to claim 1, it is characterised in that the resonant frequency of the elastic wall for 500~ 15000Hz。
11. loudspeaker enclosure according to claim 1, it is characterised in that the elastic wall absorption frequency for 3000~ The vibration of 9000Hz.
CN201711183726.3A 2017-11-23 2017-11-23 Loudspeaker enclosure Pending CN107948888A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711183726.3A CN107948888A (en) 2017-11-23 2017-11-23 Loudspeaker enclosure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711183726.3A CN107948888A (en) 2017-11-23 2017-11-23 Loudspeaker enclosure

Publications (1)

Publication Number Publication Date
CN107948888A true CN107948888A (en) 2018-04-20

Family

ID=61930103

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201711183726.3A Pending CN107948888A (en) 2017-11-23 2017-11-23 Loudspeaker enclosure

Country Status (1)

Country Link
CN (1) CN107948888A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203788443U (en) * 2014-01-10 2014-08-20 瑞声精密电子沭阳有限公司 Flat sounding device, and mobile terminal adopting same
CN106921310A (en) * 2017-05-02 2017-07-04 西安电子科技大学 A kind of electric field energy collection device
CN107333216A (en) * 2017-07-04 2017-11-07 瑞声科技(新加坡)有限公司 Loudspeaker enclosure
CN107343247A (en) * 2017-07-04 2017-11-10 瑞声科技(新加坡)有限公司 Loudspeaker enclosure
CN107360517A (en) * 2017-07-04 2017-11-17 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
CN203788443U (en) * 2014-01-10 2014-08-20 瑞声精密电子沭阳有限公司 Flat sounding device, and mobile terminal adopting same
CN106921310A (en) * 2017-05-02 2017-07-04 西安电子科技大学 A kind of electric field energy collection device
CN107333216A (en) * 2017-07-04 2017-11-07 瑞声科技(新加坡)有限公司 Loudspeaker enclosure
CN107343247A (en) * 2017-07-04 2017-11-10 瑞声科技(新加坡)有限公司 Loudspeaker enclosure
CN107360517A (en) * 2017-07-04 2017-11-17 瑞声科技(新加坡)有限公司 Loudspeaker enclosure

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