CN1525790A - Electroacoustic transducer - Google Patents
Electroacoustic transducer Download PDFInfo
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- CN1525790A CN1525790A CNA200310103451XA CN200310103451A CN1525790A CN 1525790 A CN1525790 A CN 1525790A CN A200310103451X A CNA200310103451X A CN A200310103451XA CN 200310103451 A CN200310103451 A CN 200310103451A CN 1525790 A CN1525790 A CN 1525790A
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- transducing device
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Abstract
To secure required sound pressure when an electroacoustic transducer is used as a speaker on securing sufficient sound quality even when the electroacoustic transducer is used by both the speaker and a receiver in an electroacoustic transducer device. An internal space of a housing for housing the electroacoustic transducer is partitioned into a front side space and a rear side space with a diaphragm as a boundary, and the rear side space is partitioned into a first space facing rear sound emitting holes and a second space other than the first space. Sound emitted from front sound emitting holes is used as sound of the speaker, and sound emitted from the rear sound emitting holes is used as sound of the receiver. In such a case, the volume of the front side space and the first space is made small to secure sufficient sound quality as a speaker and a receiver due to the resonance effect of the spaces. Meanwhile, the volume of the second space is made sufficient large to sufficiently absorb backpressure even though the amplitude of the diaphragm becomes large, securing required sound pressure.
Description
Technical field
The electroacoustic transducing device device of electroacoustic transducing device is taken in by the portion in the enclosure of the present invention relates to.
Background technology
Generally, portable at portable telephone etc. with in the communication equipment, dispose conversation with receiver, write letters and report electroacoustic transducing device with loud speaker etc.
At this moment, in patent documentation 1, described following electroacoustic transducing device device, it is with portable shell with communication equipment, as the shell of taking in electroacoustic transducing device.
In the electroacoustic transducing device device of in this patent documentation 1, describing, barrier film with electroacoustic transducing device is the border, the inner space of shell is divided into front side space and rear side space, on the front side wall and back face wall of shell, offer anterior louver and rear portion louver that front side space and rear side space are communicated with the space outerpace of shell respectively.In addition, by adopting such structure, can radiate towards the fore-and-aft direction of shell by the sound that electroacoustic transducing device produces.
Patent documentation 1:JP spy opens the 2001-230841 communique
Above-mentioned patent documentation 1 described electroacoustic transducing device device adopts the structure that has as the function of loud speaker, still, also can add the function as receiver therein.That is,, on the other hand, will be used as the sound of receiver, then can use 1 electroacoustic transducing device jointly by loud speaker and receiver from the sound of rear portion louver radiation if will be used as the sound of loud speaker from the sound of anterior louver radiation.
At this moment,, guarantee sufficient tonequality, preferably front space is reduced preferably rear space to be reduced to a certain degree for receiver to a certain degree for loud speaker for sympathetic response effect by shell.But all less occasion in such front side space and rear side space has following such problem.
That is, with electroacoustic transducing device as the occasion of receiver, because according to ear is conversed with the mode that the back face wall of portable shell with communication equipment contacts, so can reduce the power of its input signal.In addition, in this occasion since also with the amplitude suppressing of barrier film in less degree, so do not produce special problem.On the other hand, with electroacoustic transducing device as the occasion of loud speaker, with the portable position of leaving with communication equipment, the sound that the information of listening to is come etc. are so must make the power of its input signal very big.In addition, in this occasion, because the amplitude of barrier film is also very big, thus less if having this rear side space, then can't absorb back-pressure fully, thus, have the problem that can not guarantee required sound press.
Summary of the invention
The present invention be directed to such situation proposes, the objective of the invention is to take in the electroacoustic transducing device device of electroacoustic transducing device at portion in the enclosure, even providing a kind of is under the shared situation of loud speaker and receiver at this electroacoustic transducing device, still sufficient tonequality can be guaranteed, and the electroacoustic transducing device device of required sound press can be when using, guaranteed as loud speaker.
The mode of the present invention by taking measures at the composition in rear side space realizes above-mentioned purpose.
That is, electroacoustic transducing device device of the present invention is that the electroacoustic transducing device device of electroacoustic transducing device is taken in by portion in the enclosure, it is characterized in that:
Barrier film with above-mentioned electroacoustic transducing device is the border, and the inner space of above-mentioned shell is divided into front side space and rear side space;
On the front side wall of above-mentioned shell, be formed with the anterior louver that above-mentioned front side space is communicated with the space outerpace of this shell, and on the back face wall of above-mentioned shell, be formed with the rear portion louver that above-mentioned rear side space is communicated with the space outerpace of this shell;
The volume settings in above-mentioned rear side space is the also big value of volume than above-mentioned front side space;
Above-mentioned rear side space is divided into first space and second space of facing with above-mentioned rear portion louver in addition, this first space basically.
The drive form of above-mentioned " electroacoustic transducing device " is not special the qualification, such as, can adopt the electroacoustic transducing device of power type or the electroacoustic transducing device of electromagnetic type etc.
Above-mentioned " inner space of shell " not only refers to the space that is positioned at the electroacoustic transducing device outside in the above-mentioned shell, and refers to also to comprise the space in the space of the inboard that is positioned at electroacoustic transducing device.
If above-mentioned " volume in rear side space " is set at the value also bigger than the volume in front side space, its concrete value is not special the qualification, but, the viewpoint of the back-pressure that produces when using as loud speaker from absorbing fully is preferably the big as far as possible value in the scope that allows from structure.
Above-mentioned " separating basically " refers to when using as receiver, in fact, only first space separated according to the degree relevant with the sympathetic response effect.
As shown in the such scheme, though electroacoustic transducing device device of the present invention is the formation that electroacoustic transducing device is accommodated in the inside of shell, but, because the barrier film with electroacoustic transducing device is the border, the inner space of shell is divided into front side space and rear side space, in addition, on the front side wall of shell, be formed with the anterior louver that the front side space is communicated with the space outerpace of this shell, and on the back face wall of shell, the rear portion louver that formation makes the rear side space be communicated with the space outerpace of shell, in addition, the volume settings in rear side space is the value also bigger than the volume in front side space, in addition, the rear side space is divided into basically first space and second space of facing with the rear portion louver in addition, this first space, so be used as the sound of loud speaker from the sound of anterior louver radiation, on the other hand, the sound of receiver will be used as, following such action effect can be obtained from the sound of rear portion louver radiation.
That is,,, can guarantee sufficient tonequality as loud speaker by the sympathetic response effect in above-mentioned front side space if the volume in front side space is reduced to a certain degree.In occasion like this,,, thus, can guarantee required sound press equally as loud speaker so under the situation that the amplitude of barrier film increases, still back-pressure can be absorbed fully because the volume settings in rear side space is the value also bigger than the volume in front side space.
On the other hand, if in the wings in the side space,, then, can guarantee sufficient tonequality as receiver by the sympathetic response effect in this first space with the volume in first space that reduces to a certain degree to face with the rear portion louver.In addition, in the occasion of using as receiver, because the amplitude of barrier film is less, so, still do not produce special problem even forwardly under the less situation of the volume in side space.
If such employing the present invention, take in the electroacoustic transducing device device of electroacoustic transducing device the inside that is shell, even using jointly under the situation of this electroacoustic transducing device by loud speaker and receiver, still sufficient tonequality can be guaranteed, and required sound press can be when using, guaranteed as loud speaker.
In above-mentioned scheme, constituting first space in rear side space and the occurrence in second space does not limit especially, if with the volume settings in second space is the value also bigger than the volume in first space, then when using as receiver, the volume in first space is reduced to a certain degree, by its sympathetic response effect, improve the tonequality of receiver, and can guarantee when using that sufficient back-pressure absorbs the space as loud speaker.
In addition, in such scheme, if making first space and second space fully separates in the outside of above-mentioned electroacoustic transducing device, be interconnected in the inboard of above-mentioned electroacoustic transducing device on the other hand, because can be near the louver of rear portion, determine the shape in first space, so can calculate the sympathetic response effect in first space easily.
Perhaps, if because according to replacing aforesaid way, and above-mentioned first space and second space are interconnected by the intercommunicating pore of stipulating in the outside of above-mentioned electroacoustic transducing device, and above-mentioned first space forms according to the mode of facing with above-mentioned barrier film, first space and second space are interconnected, so can reduce to be formed at the quantity of the louver on the electroacoustic transducing device, thus, can simplify the composition of electroacoustic transducing device.In this occasion, for above-mentioned " intercommunicating pore of regulation ", when using as receiver, if its sympathetic response effect is not being produced in the scope of substantial influence, the concrete composition of its size, shape, quantity, configuration etc. is not subjected to special restriction.
But, electroacoustic transducing device device of the present invention also can be used as the unit and is assemblied in portable with in the communication equipment, yet, if make the shell of this electroacoustic transducing device device constitute a portable part of using the shell of communication equipment, then can simplify this portable composition, and can form this shell compactly with communication equipment.In this occasion, if above-mentioned " the portable communication equipment of using " is communication equipment that can be portable, then its kind is to be not particularly limited, and can adopt the handset of portable telephone, PHS telephone set, PDA, fixed telephone etc.
Description of drawings
Fig. 1 for expression with side cross-sectional view towards the state of the electroacoustic transducing device device of upper type configuration one embodiment of the present invention.
Fig. 2 is for representing to dispose the vertical view of the state of above-mentioned electroacoustic transducing device device towards upper type.
Fig. 3 is for representing to dispose the upward view of the state of above-mentioned electroacoustic transducing device device towards upper type.
Fig. 4 is the details drawing of the major part among Fig. 1.
Fig. 5 is figure variation, identical with Fig. 4 of the above-mentioned execution mode of expression.
Fig. 6 is the figure another variation, identical with Fig. 1 of the above-mentioned execution mode of expression.
The explanation of label: 10 electroacoustic transducing device devices; 12 electroacoustic transducing devices; 14 shells; The 14A front shell; The 14Aa front side wall; The anterior louver of 14Ab; The 14Ac annular flange portion; The 14B back shell; The 14Ba back face wall; 14Bb rear portion louver; The 14Bc annular flange portion; 22 barrier films; 24 supports; 24a, 24d annular flange portion; 24b diaphragm support portion; The 24c louver; The 24e intercommunicating pore; 26 voice coil loudspeaker voice coils; 28 magnetic circuit unit; 30 lids; The 30a louver; 32 pedestals; The 32a louver; 34 magnet; 36 yokes; 38,40 packing rings; 50 shells; Cf front side space; Cr rear side space; Cr1 first space; Cr2 second space.
Embodiment
With reference to the accompanying drawings, embodiments of the present invention are described.
Fig. 1 for expression with side cross-sectional view towards the state of the electroacoustic transducing device device 10 of upper type configuration an embodiment of the invention, Fig. 2 and Fig. 3 are its top and bottom perspective views.
Shown in the drawings as these, in the electroacoustic transducing device device 10 of present embodiment,, taken in electroacoustic transducing device 12 in the inside of shell 14, use under the state in being assemblied in portable telephone etc.
Above-mentioned electroacoustic transducing device 12 is the power type electroacoustic transducing device of external diameter about 10～20mm, and it comprises barrier film 22, supports the support 24 of the outer peripheral edges portion of this barrier film 22; Leading section is fixed in the voice coil loudspeaker voice coil 26 on the barrier film 22; Be formed with the magnetic circuit unit 28 of the tubular magnetic gap of the rearward end of taking in this voice coil loudspeaker voice coil 26; Cover the lid 30 of barrier film 22 from front side.
Fig. 4 is the detail drawing of the major part of Fig. 1.
Also as shown in the drawing, support 24 at its peripheral end, is formed with annular flange portion 24a up in the form of a ring.In addition,, be formed with the 24b of diaphragm support portion of supporting barrier film 22,,, be formed with a plurality of louver 24c along circumferential a plurality of positions in interior all sides of the 24b of this diaphragm support portion in interior all sides of the annular flange portion 24a of this support 24.In addition, in interior all ends of this support 24, be formed with the annular flange portion 24d outstanding towards the rear.
The peripheral end of above-mentioned lid 30 is fixed on the 24b of diaphragm support portion of support 24.Around this lid central part of 30 and its, be formed with a plurality of louver 30a.
In shell 14, front shell 14A engages with back shell 14B.
Forwardly the central part of the front side wall 14Aa of shell 14A is formed with 3 oval-shaped anterior louver 14Ab.In addition, at the inner face of this front side wall 14Aa, the mode according to around 3 anterior louver 14Ab is formed with annular flange portion 14Ac.The internal diameter of this annular flange portion 14Ac is slightly greater than the external diameter of the support 24 of electroacoustic transducing device 12.
On the other hand, on the central part of the back face wall 14Ba of back shell 14B, be formed with 2 short slightly oval-shaped rear portion louver 14Bb.In addition, the inner face of wall 14Ba in the back, the mode according to around 2 rear portion louver 14Bb is formed with annular flange portion 14Bc.The internal diameter of this annular flange portion 14Bc is slightly greater than the annular flange portion 24d of the support 24 of electroacoustic transducing device 12.
In addition, electroacoustic transducing device 12 is accommodated in the shell 14 according to the mode of interior all sides of the annular flange portion 14Ac that is positioned front shell 14A.
At this moment, between the annular flange portion 24a and front shell 14A of support 24, along the inner peripheral surface of annular flange portion 14Ac, being folded with packing ring 38, thus, is the border with barrier film 22, and the inner space of shell 14 is divided into front side space Cf and rear side space Cr.
Also have, between the annular flange portion 24d and back shell 14B of support 24, inner peripheral surface along annular flange portion 14Bc, be folded with packing ring 40, thus, in the outside of electroacoustic transducing device 12, rear side space Cr is divided into the first space Cr1 and this first space Cr1 second space Cr2 in addition that faces with rear portion louver 14Bb.
As described later, according to the viewpoint that the back-pressure that will be produced when using as loud speaker fully absorbs, the volume of preferred rear side space Cr is big as far as possible value.Specifically, the volume settings of preferred rear side space Cr is in the value more than 10 times that is the volume of front side space Cf, particularly preferably set in the value more than 20 times that is the volume of front side space Cf, especially preferably set in the value more than 30 times that is the volume of front side space Cf.At this moment, according to the viewpoint of when using, guaranteeing sufficient tonequality as receiver, side space Cr in the wings, because preferably setting to a certain degree smaller value, the volume of the first space Cr1 that faces with rear portion louver 14Bb can obtain suitable sympathetic response effect, so preferred volume settings with the second space Cr2 is in big as far as possible value.
From such viewpoint, in the present embodiment, the volume settings of front side space Cf is about 0.1cc, and the volume settings of the first space Cr1 of rear side space Cr is about 0.1cc, and the volume settings of the second space Cr2 of rear side space Cr is about 4cc.
Action effect to present embodiment is described below.
The electroacoustic transducing device device 10 of present embodiment forms according to the mode by loud speaker and shared this electroacoustic transducing device 12 of receiver.That is, be used for letter from the sound of anterior louver 14Ab radiation as the sound of loud speaker and report, on the other hand, be used for conversation as the sound of receiver from the sound of rear portion louver 14Bb radiation.At this moment, be about 0.3W as the power of the input signal of the sound of loud speaker, this is bigger value, thus, barrier film 22 is with vibration largely.In addition, be 1mW as the power of the input signal of the sound of receiver, this is smaller value, barrier film 22 vibrates with less degree.
In the electroacoustic transducing device device 10 of present embodiment, if barrier film 22 with vibration largely, then shown in the arrow A in Fig. 4, sound, radiates towards the place ahead by anterior louver 14Ab from front side space Cf.At this moment, shown in the arrow B in Fig. 4, sound is also from the first space Cr1 of rear side space Cr, by rear portion louver 14Bb, radiate towards the rear, but, because the opening gross area of 3 anterior louver 14Ab substantially exceeds the opening gross area of 2 rear portion louver 14Bb, so sound mainly radiates towards the place ahead.At this moment, because front side space Cf is set in the less volume of 0.1cc,, can guarantee sufficient tonequality as loud speaker so pass through the sympathetic response effect of this front side space Cf.In addition, at this moment, because the second space Cr2 of rear side space Cr is set at the bigger volume of 4cc, so shown in the arrow C in Fig. 4, even under the bigger situation of the amplitude of barrier film 22, still can absorb back-pressure fully, thus, can guarantee required sound press as loud speaker.
On the other hand, equally in the occasion of barrier film 22 with less degree vibration, as shown in the arrow A, sound is from front side space Cf, by anterior louver 14Ab, towards the place ahead radiation, and as shown in the arrow B, sound is from the first space Cr1 of rear side space Cr, by rear portion louver 14Bb, towards the rear radiation, at this moment, sound mainly radiates towards the place ahead.But, owing to when using, ear is contacted with the back face wall 14Ba of shell 14 as receiver, converse, so hear sound from rear portion louver 14Bb.At this moment, because the first space Cr1 is set in the less volume of 0.1cc,, guarantee sufficient tonequality as receiver so pass through the sympathetic response effect of this first space Cr1.In addition, as the occasion of receiver, because the amplitude of barrier film 22 is less, so, still do not produce special problem even side space Cf is set under the situation of less volume of 0.1cc forwardly.
If such employing present embodiment is same in the occasion of being used electroacoustic transducing device 12 by loud speaker and receiver simultaneously, not only guarantees sufficient tonequality, and when using, guarantee required sound press as loud speaker.
Particularly in the present embodiment, because the volume settings of the volume of the first space Cr1 and front side space Cf is at essentially identical smaller value, thus no matter be loud speaker, or receiver, all can improve tonequality fully.
In addition, in the present embodiment, because the first space Cr1 and the second space Cr2 separate fully in the outside of electroacoustic transducing device 12, by the louver 24c of support 24 and the louver 32a of pedestal 32, inboard at electroacoustic transducing device 12, be interconnected, so can guarantee the shape of the first space Cr1 of rear portion louver 14Bb near.Thus, the sympathetic response effect of the first space Cr1 can be calculated easily, like this, the tonequality of the receiver of lay special stress on tonequality can be improved.
Fig. 5 is the figure distortion example, identical with Fig. 4 of the above-mentioned execution mode of expression.
Shown in Figure 5 as this, equally in this distortion example, its basic structure is identical with above-mentioned execution mode, but this distortion example part different from the embodiment described above is: louver 24c fully is not formed in the support 24, and annular flange portion 24d forms a plurality of intercommunicating pore 24e at circumferential a plurality of positions opening.
Thus, in this distortion example, the first space Cr1 and the second space Cr2, are interconnected by a plurality of intercommunicating pore 24e in the outside of electroacoustic transducing device 12, and in addition, the first space Cr1 forms according to the mode of facing with barrier film 22.
Owing to adopt the scheme of this distortion example, the first space Cr1 and the second space Cr2 needn't be interconnected in the inboard of electroacoustic transducing device 12, so the louver that should be formed in the electroacoustic transducing device 12 only can be got the louver 32a that makes pedestal 32, thus, can simplify the structure of electroacoustic transducing device 12.
In addition, though form like this at above-mentioned execution mode, that is, the first space Cr1 and the second space Cr2 fully are separated out in the outside of electroacoustic transducing device 12,, the also scheme that can adopt both to be communicated with.That is, also can adopt following structure: promptly except the louver 32a of the louver 24c of support 24 and pedestal 32,, in annular flange portion 24d, form intercommunicating pore 24e also as above-mentioned distortion example.When adopting such structure, the factor of size that can be by suitably changing intercommunicating pore 24e, shape, quantity, configuration etc. is adjusted acoustics.
But, in above-mentioned execution mode and its distortion example, the occasion that electroacoustic transducing device device 10 is assemblied in as the unit in portable telephone etc. is described, but, also can be as shown in Figure 6, make the shell 14 of electroacoustic transducing device device 10 constitute the part of the shell 50 of portable telephones etc.By adopting such structure, can simplify the composition of portable telephone etc., constitute shell 50 in the mode of compactness.
Claims (5)
1. electroacoustic transducing device device, electroacoustic transducing device has been taken in by portion in the enclosure, it is characterized in that:
Barrier film with described electroacoustic transducing device is the border, and the inner space of described shell is divided into front side space and rear side space;
On the front side wall of described shell, be formed with the anterior louver that described front side space is communicated with the space outerpace of this shell, and on the back face wall of described shell, be formed with the rear portion louver that described rear side space is communicated with the space outerpace of described shell;
The volume settings in described rear side space is the also big value of volume than described front side space;
Described rear side space is divided into first space and second space of facing with described rear portion louver in addition, this first space basically.
2. electroacoustic transducing device device according to claim 1 is characterized in that, the volume settings in described second space is the value also bigger than the volume in described first space.
3. electroacoustic transducing device device according to claim 1 and 2 is characterized in that, described first space and second space are separated fully in the outside of described electroacoustic transducing device, on the other hand, is interconnected in the inboard of described electroacoustic transducing device.
4. electroacoustic transducing device device according to claim 1 and 2 is characterized in that,
Described first space and second space are interconnected by the intercommunicating pore of stipulating in the outside of described electroacoustic transducing device;
Described first space and described barrier film form in the face of ground.
5. electroacoustic transducing device device according to claim 1 and 2 is characterized in that,
Described shell constitutes a portable part of using the shell of communication equipment.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003052618A JP4150611B2 (en) | 2003-02-28 | 2003-02-28 | Electroacoustic transducer device |
| JP2003052618 | 2003-02-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1525790A true CN1525790A (en) | 2004-09-01 |
| CN100525511C CN100525511C (en) | 2009-08-05 |
Family
ID=33117445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200310103451XA Expired - Fee Related CN100525511C (en) | 2003-02-28 | 2003-11-03 | Electroacoustic transducer |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4150611B2 (en) |
| CN (1) | CN100525511C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106465018A (en) * | 2014-06-26 | 2017-02-22 | Toa株式会社 | Speaker unit and speaker comprising that speaker unit |
| CN113557751A (en) * | 2019-03-13 | 2021-10-26 | 虹软科技股份有限公司 | Air pumping transducer and sensor coupled to air pumping transducer |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101196953B1 (en) * | 2005-10-06 | 2012-11-05 | 삼성전자주식회사 | Speaker device for portable terminal |
| JP4637060B2 (en) * | 2006-06-26 | 2011-02-23 | パイオニア株式会社 | Call terminal |
| JP4900089B2 (en) * | 2007-07-03 | 2012-03-21 | 積水ハウス株式会社 | Speaker ceiling mounting structure |
| JP2010273334A (en) * | 2009-04-23 | 2010-12-02 | Panasonic Corp | Electronic device and imaging apparatus |
| KR101690524B1 (en) * | 2015-06-24 | 2016-12-29 | 민동훈 | Double Resonant Speaker Unit And Multi-Way Earphone Comprising The Same |
| KR102227138B1 (en) * | 2019-11-01 | 2021-03-15 | 주식회사 이엠텍 | Receiver module integrated with a duct |
-
2003
- 2003-02-28 JP JP2003052618A patent/JP4150611B2/en not_active Expired - Fee Related
- 2003-11-03 CN CNB200310103451XA patent/CN100525511C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106465018A (en) * | 2014-06-26 | 2017-02-22 | Toa株式会社 | Speaker unit and speaker comprising that speaker unit |
| CN106465018B (en) * | 2014-06-26 | 2019-07-19 | Toa株式会社 | Loudspeaker unit and the loudspeaker for having the loudspeaker unit |
| CN113557751A (en) * | 2019-03-13 | 2021-10-26 | 虹软科技股份有限公司 | Air pumping transducer and sensor coupled to air pumping transducer |
| CN113557751B (en) * | 2019-03-13 | 2023-08-15 | 虹软科技股份有限公司 | Air pumping transducer |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4150611B2 (en) | 2008-09-17 |
| JP2004266410A (en) | 2004-09-24 |
| CN100525511C (en) | 2009-08-05 |
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Granted publication date: 20090805 Termination date: 20101103 |