CN102547539A - Coaxial diaphragm loudspeaker unit and mirror coaxial diaphragm type sound box - Google Patents

Coaxial diaphragm loudspeaker unit and mirror coaxial diaphragm type sound box Download PDF

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Publication number
CN102547539A
CN102547539A CN2011104587923A CN201110458792A CN102547539A CN 102547539 A CN102547539 A CN 102547539A CN 2011104587923 A CN2011104587923 A CN 2011104587923A CN 201110458792 A CN201110458792 A CN 201110458792A CN 102547539 A CN102547539 A CN 102547539A
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CN
China
Prior art keywords
coaxial
diaphragm
sound basin
vibrating
passive type
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CN2011104587923A
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Chinese (zh)
Inventor
李世煌
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李世煌
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Priority to CN2011104587923A priority Critical patent/CN102547539A/en
Publication of CN102547539A publication Critical patent/CN102547539A/en
Priority claimed from PCT/SG2013/000072 external-priority patent/WO2013100863A2/en
Pending legal-status Critical Current

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Abstract

The invention discloses a coaxial diaphragm loudspeaker unit, comprising an electromagnetic loudspeaker, wherein the electromagnetic loudspeaker comprises a sound cone driven by a voice coil and a sound cone frame for fixing the sound cone. The coaxial diaphragm loudspeaker unit is characterized by further comprising a passive type diaphragm, wherein the passive type diaphragm is fixed on the sound cone frame through an elastic component, annularly distributed outside the sound cone circumferentially, and coaxial with the sound cone; meanwhile, one side of the passive type diaphragm is maintained to be communicated with air in one side of the sound cone and sealed; and the other side of the passive type diaphragm and the other side of the sound cone are both exposed in an opening space. The coaxial passive type diaphragm and the sound cone are uniform to air vibration inside a resonant cavity, and almost free from influences of internal geometric structures of a sealing cover; acoustic coloring is small, so that the design of the sealing cover is not restricted greatly, as long as an enough sealing property is guaranteed; and the whole loudspeaker unit has the characteristics of simple and reliable scheme as well as good applicability.

Description

The coaxial diaphragm-vibrating type audio amplifier of coaxial vibrating membrane loudspeaker unit and mirror image
Technical field
The present invention relates to the accessory in electroacoustic conversion field, specifically is a kind of loudspeaker unit and the coaxial diaphragm-vibrating type audio amplifier of using this loudspeaker unit with coaxial vibrating diaphragm.
Background technology
In electroacoustic conversion field, general magnetic speaker all be to drive the vibration of sound basin through the electrified coil in the magnetic field to accomplish the electroacoustic conversion, and the two sides of its sound basin all is exposed in the open space.Usually; Its frequency response of single magnetic speaker partly is very weak at medium and low frequency; Because its sound basin yardstick is almost ignored for the medium and low frequency wave length of sound; The sound wave output of its two sides opposite phase is cancelled when making the vibration of sound basin, thereby can't export the medium and low frequency sound of enough power.For reaching the purpose of bass in the abundant reduction, all need loudspeaker unit be placed specially designed audio amplifier usually, avoid the sound wave of phase cancellation, reach good recovery effect.
On the one hand; The design of audio amplifier is very important, because its in-built size is very big to the influential effect of paraphase, and the volume of same its application scenario of loud speaker or deviation is arranged; There is very big influence in the capital to output tonequality, and the size design of casing is improper to cause unwanted sound coloration easily; On the other hand, audio amplifier is realized enough tonequality in order to accomplish its function, and its size is difficult to dwindle, the inconvenience of bringing for the occasion of using audio amplifier.
Summary of the invention
Based on the scheme size of the supporting audio amplifier of above general loud speaker malleable not, the problem that customized design is loaded down with trivial details, the present invention proposes a kind of coaxial vibrating membrane loudspeaker unit and the coaxial diaphragm-vibrating type audio amplifier of using this loudspeaker unit, and its technical scheme is following:
Coaxial vibrating membrane loudspeaker unit comprises a magnetic speaker, and this magnetic speaker comprises and receives the sound basin that voice coil loudspeaker voice coil drives and the sound basin frame of stationary tone basin; It also comprises a passive type vibrating diaphragm; Said passive type vibrating diaphragm is fixed in said sound basin frame through elastic component, circumferentially is distributed in ringwise outside the said sound basin, and coaxial with said sound basin; Simultaneously, the wherein one side of said passive type vibrating diaphragm and said sound basin wherein the air of one side keep being communicated with and sealing; The another side of the another side of said passive type vibrating diaphragm and said sound basin all is exposed to open space.
As some preferred persons of present technique scheme, can aspect as follows, have improvement:
In one preferred embodiment, said sound basin and said passive type vibrating diaphragm all rotate symmetry.
In one preferred embodiment, said passive type vibrating diaphragm is the form on plane.
In one preferred embodiment, said passive type vibrating diaphragm is the descending gradual change shape of radius axially by it.
In one preferred embodiment, the wherein one side of said passive type vibrating diaphragm is with the positive air communication of said sound basin and keep sealing.
In one preferred embodiment, the wherein one side of said passive type vibrating diaphragm is with the reverse side air communication of said sound basin and keep sealing.
More than be the scheme of coaxial vibrating membrane loudspeaker unit,, following audio amplifier scheme can be arranged if adopt this type loudspeaker unit:
The coaxial diaphragm-vibrating type audio amplifier of mirror image, it comprises:
The a pair of loud speaker that the axial opposed mirror image is provided with, the two is fixed in a sound basin frame; And
Coaxial passive vibrating diaphragm, coaxial ring-type are distributed in said loudspeaker cone periphery, and the mirror image setting is corresponding with each said loud speaker, are fixed in said sound basin frame through elastic component;
Wherein, the identical one side of said coaxial passive vibrating diaphragm and the identical one side of said sound basin are communicated with the part of said sound basin frame, form the resonant cavity of a sealing jointly; The another side that the another side that said coaxial passive vibrating diaphragm is identical is identical with said sound basin is exposed to open space jointly.
The coaxial diaphragm-vibrating type audio amplifier of this mirror image has some has embodiment preferred, can aspect following, embody:
In one preferred embodiment, the coaxial diaphragm-vibrating type audio amplifier of said mirror image is characterized in that: the sound basin front of said loud speaker is arranged in said resonant cavity.
In one preferred embodiment, the sound basin back side of said loud speaker is arranged in said resonant cavity.
In one preferred embodiment, the form that said coaxial passive vibrating diaphragm is a plane diaphragm.
In one preferred embodiment, said coaxial passive vibrating diaphragm is the form by its axial descending gradual change of its radius.
In one preferred embodiment, said loudspeaker cone and passive type vibrating diaphragm rotation symmetry.
The beneficial effect that technical scheme such as this loudspeaker unit and audio amplifier is brought is:
1. coaxial passive type vibrating diaphragm and sound basin, even with the air vibration in the resonant cavity, receive the influence of seal cover interior geometry hardly, sound coloration is little, so the design of seal cover will not have too many restriction, as long as guarantee enough sealings; The scheme of whole loudspeaker unit is simple and reliable, and applicability is good.
2. when loudspeaker cone receives to drive the generation vibration; Can be its back side load with air in the resonant cavity and passive type vibrating diaphragm; Driving it vibrates; So the acoustic short circuit of sound basin positive and negative has been eliminated in the output of the front homophase of passive type vibrating diaphragm and sound basin, make sound particularly medium and low frequency can well be reduced output.
3. the audio amplifier of mirror image diaphragm-vibrating type; Receive at loud speaker under the driving of same audio signal; Its vibration kinetic energy is in the axial counteracting of whole device; Make sound basin frame when work, can not produce too much sound coloration, and bring too many extra vibration can for the device at place because of the additional vibratory of redundance.
4. the passive type vibrating diaphragm adopts the form by axial descending radius gradual change, makes the vibration balance more in the axial direction of vibrating diaphragm, thereby passive type vibrating diaphragm and its mirror image person's vibration is more stable, and the audio amplifier sound coloration is littler.
Description of drawings
Embodiment is described further the present invention below in conjunction with accompanying drawing:
Fig. 1 is the generalized section of the embodiment of the invention one;
Fig. 2 is the front view of Fig. 1 embodiment;
Fig. 3 is the generalized section of the embodiment of the invention two audio amplifiers;
Fig. 4 is this Fig. 3 embodiment front view;
Fig. 5 is the embodiment of the invention three front views;
Fig. 6 is the embodiment of the invention four generalized sections;
Fig. 7 is the embodiment of the invention five generalized sections;
Fig. 8 is a front view embodiment illustrated in fig. 7.
Embodiment
Embodiment one:
Like Fig. 1, the generalized section of the embodiment of the invention one; Fig. 2 is the front view of Fig. 1 embodiment; Explain in conjunction with this two figure:
This embodiment one is coaxial vibrating membrane loudspeaker unit; It comprises a sound basin frame 10, and this sound basin frame 10 is rotational symmetric circular contour, and its middle body is a magnetic speaker; Have complete sound basin 11, and the face exposure through sound basin hole 12 these sound basins 11 is in open space; Has a plane ring shaped passive type vibrating diaphragm 13 in the periphery of sound basin 11; This passive type vibrating diaphragm 13 is respectively that interior elastic ring 14 can be fixed on the sound basin frame 10 with outer elastic ring 15 quiveringly through elastic component; Simultaneously, passive type vibrating diaphragm 13 is coaxial with sound basin 11, is rotational symmetric circle.
Rear with respect to passive type vibrating diaphragm 13 and sound basin 11 on sound basin frame 10 has a seal cover 16; Sound basin 11, interior elastic ring 14, outer elastic ring 15 and the part sound basin frame 10 of this seal cover 16 and passive type vibrating diaphragm 13, loud speaker have constituted has air-tight resonant cavity in one; So; Face of passive type vibrating diaphragm 13 and the back side of sound basin 11 are arranged in this resonant cavity 17 jointly and are communicated with and seal; The front of another face of passive type vibrating diaphragm 13 and sound basin 11 towards open space, when loudspeaker cone 11 receives to drive the generation vibration, can be its back side load with air and the passive type vibrating diaphragm 13 in the resonant cavity 17 in the direction shown in the arrow so simultaneously; Driving it vibrates; So the acoustic short circuit of sound basin 11 positive and negatives has been eliminated in the front homophase output of passive type vibrating diaphragm 13 and sound basin 11, make sound particularly medium and low frequency can well be reduced output; In addition, coaxial passive type vibrating diaphragm 13 and sound basin 11, even with the air vibration in the resonant cavity 17, receive the influence of seal cover 16 interior geometry hardly, sound coloration is little, so the design of seal cover will not have too many restriction, as long as guarantee enough sealings; The scheme of whole loudspeaker unit is simple and reliable, and applicability is good.
Embodiment two:
Like Fig. 3, the generalized section of the embodiment of the invention two audio amplifiers; Fig. 4 is this Fig. 3 embodiment front view; In conjunction with this two figure embodiments of the invention two are described:
Sound basin frame 10 is the rotation symmetry members of mirror image symmetry in the axial direction, and similar with embodiment one, loud speaker has been fixed by its central authorities, and sound basin 11 through 12 fronts, sound basin hole outwardly.The periphery of loudspeaker cone 11 is passive type vibrating diaphragms 13, likewise through interior elastic ring 14 and outer elastic ring 15 fixing and sound basin framves.Different with embodiment one is, whole device is on the axial direction of sound basin 11 and passive type vibrating diaphragm 13, and its reverse side has the unit of mirror image, for example mirror image passive type vibrating diaphragm 13 ', mirror image loudspeaker cone 11 ', mirror image sound basin hole 12 '; At the fixing sealing ring 18 of the most peripheral of sound basin frame 10; This sealing ring has constituted resonant cavity 17 simultaneously together with passive type vibrating diaphragm 13, sound basin 11, interior elastic ring 14, outer elastic ring 15 and above-mentioned mirror image person; Whole device is to be the coaxial diaphragm-vibrating type audio amplifier of a mirror image; Except the advantage that possesses embodiment one loudspeaker unit, present embodiment also has its unique value: receive under the driving of same audio signal sound basin 11 and mirror image sound basin 11 ' at loud speaker; And passive type vibrating diaphragm 13 and mirror image passive type vibrating diaphragm 13 '; Its each self-corresponding vibration kinetic energy makes sound basin frame 10 and sealing ring 18 when working, can not produce too much sound coloration because of the additional vibratory of redundance, and bring too many extra vibration can not for the device at place in the axial counteracting of whole device; On the other hand, in fact sound basin and vibrating diaphragm have occupied most vibration plane in the device for sealing ring 18 and sound basin frame 10, make that the vibration area strictness of sound coloration is limited, and this has reduced unnecessary noise further; Simultaneously the width of sealing ring 18 can be only restricted by the effective thickness of sound basin 11, the thickness of whole audio amplifier, and promptly the width of sealing ring 18 can be accomplished very for a short time, is applicable to the audio amplifier of molding plate type to have good universality.
Embodiment three:
Like Fig. 5, the embodiment of the invention three front views; The generalized section of present embodiment three and embodiment shown in Figure 3 two are basic identical; Different is; The shape of the outline of sealing ring 18, passive type vibrating diaphragm 13 all is a square; The audio amplifier of this form has a very big advantage: can a plurality ofly in the horizontal constitute array system, in different low-frequency ranges, the whole speaker array that then constitutes can possess good sound-reducing ability in small size as if array person resonance.
Embodiment four:
Like Fig. 6 is the embodiment of the invention four generalized sections; The section layout of present embodiment, similar with embodiment two shown in Figure 3 in fact, but different be; Passive type vibrating diaphragm 13 no longer is a plane configuration with its mirror image person 13 ', but presses the form of the descending gradual change of its axial radii, and; With regard to its mirror image person; Its big end each other near, and small end each other away from, make resonant cavity 17 be the flat olive shape of traverse.Form so; When its passive type vibrating diaphragm 13 influences generation resonance with mirror image passive type vibrating diaphragm 13 ' air in receiving resonant cavity 17; Except bearing the pressure in the x direction, vertical with x, be all to have horizontal active force on all y directions at center with it, so make the vibration of vibrating diaphragm balance more on the x direction; Thereby passive type vibrating diaphragm 13 and its mirror image person's 13 ' vibration is more stable, and sound coloration is littler; Therefore even can use hook on the sound basin frame 10 that audio amplifier is hung and do not need extra vibration proof measure, such fixed form and outward appearance to have the appearance value of better tonequality reducing property and uniqueness.
Embodiment five:
Like Fig. 7, the embodiment of the invention five generalized sections; Fig. 8 is a front view embodiment illustrated in fig. 7.Give illustrative embodiment five in conjunction with this two figure:
Present embodiment five is compared with the embodiment two to four of other above-mentioned audio amplifiers; The passive type vibrating diaphragm 13 and its mirror image person 13 ' that have plane annular equally; Maximum difference is the load mode of loudspeaker cone 11, also promptly, and in the present embodiment; The front of its sound basin 11 of loud speaker is to be sealed in the resonant cavity 17, and the back side (reverse side) outwardly; So, the thickness of resonant cavity 17 is useful in the special occasions with limited of a lot of thickness with the thickness that is subject to sound basin 11 no longer as shown in Figure 3, as long as allow that wherein its sound basin 11 of loud speaker of shaft portion axially has spatial accommodation.Sound basin frame 10 can design the thickness of its resonant cavity 17 as required, and the loud speaker that can select for use sound basin 11 to have big stroke obtains better effect.
The above is merely preferred embodiment of the present invention, so can not limit the scope that the present invention implements according to this, the equivalence of promptly doing according to claim of the present invention and description changes and modifies, and all should still belong in the scope that the present invention contains.

Claims (12)

1. coaxial vibrating membrane loudspeaker unit comprises a magnetic speaker, and this magnetic speaker comprises and receives the sound basin that voice coil loudspeaker voice coil drives and the sound basin frame of stationary tone basin; It is characterized in that: it also comprises a passive type vibrating diaphragm; Said passive type vibrating diaphragm is fixed in said sound basin frame through elastic component, circumferentially is distributed in ringwise outside the said sound basin, and coaxial with said sound basin; Simultaneously, the wherein one side of said passive type vibrating diaphragm and said sound basin wherein the air of one side keep being communicated with and sealing; The another side of the another side of said passive type vibrating diaphragm and said sound basin all is exposed to open space.
2. coaxial vibrating membrane loudspeaker according to claim 1 unit is characterized in that: said sound basin and said passive type vibrating diaphragm all rotate symmetry.
3. coaxial vibrating membrane loudspeaker according to claim 1 unit is characterized in that: said passive type vibrating diaphragm is the form on plane.
4. coaxial vibrating membrane loudspeaker according to claim 1 unit is characterized in that: said passive type vibrating diaphragm axially is the descending gradual change shape of radius by it.
5. coaxial vibrating membrane loudspeaker according to claim 1 unit is characterized in that: the wherein one side of said passive type vibrating diaphragm is with the positive air communication of said sound basin and keep sealing.
6. coaxial vibrating membrane loudspeaker according to claim 1 unit is characterized in that: the wherein one side of said passive type vibrating diaphragm is with the reverse side air communication of said sound basin and keep sealing.
7. the coaxial diaphragm-vibrating type audio amplifier of mirror image, it is characterized in that: it comprises:
The a pair of loud speaker that the axial opposed mirror image is provided with, the two is fixed in a sound basin frame; And
Coaxial passive vibrating diaphragm, coaxial ring-type are distributed in said loudspeaker cone periphery, and the mirror image setting is corresponding with each said loud speaker, are fixed in said sound basin frame through elastic component;
Wherein, the identical one side of said coaxial passive vibrating diaphragm and the identical one side of said sound basin are communicated with the part of said sound basin frame, form the resonant cavity of a sealing jointly; The another side that the another side that said coaxial passive vibrating diaphragm is identical is identical with said sound basin is exposed to open space jointly.
8. according to the coaxial diaphragm-vibrating type audio amplifier of the said mirror image of claim 7, it is characterized in that: the sound basin front of said loud speaker is arranged in said resonant cavity.
9. according to the coaxial diaphragm-vibrating type audio amplifier of the said mirror image of claim 7, it is characterized in that: the sound basin back side of said loud speaker is arranged in said resonant cavity.
10. according to the coaxial diaphragm-vibrating type audio amplifier of the said mirror image of claim 7, it is characterized in that: the form that said coaxial passive vibrating diaphragm is a plane diaphragm.
11. according to the coaxial diaphragm-vibrating type audio amplifier of the said mirror image of claim 7, it is characterized in that: said coaxial passive vibrating diaphragm is the form by its axial descending gradual change of its radius.
12., it is characterized in that: said loudspeaker cone and passive type vibrating diaphragm rotation symmetry according to the coaxial diaphragm-vibrating type audio amplifier of the said mirror image of claim 7.
CN2011104587923A 2011-12-31 2011-12-31 Coaxial diaphragm loudspeaker unit and mirror coaxial diaphragm type sound box Pending CN102547539A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011104587923A CN102547539A (en) 2011-12-31 2011-12-31 Coaxial diaphragm loudspeaker unit and mirror coaxial diaphragm type sound box

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2011104587923A CN102547539A (en) 2011-12-31 2011-12-31 Coaxial diaphragm loudspeaker unit and mirror coaxial diaphragm type sound box
PCT/SG2013/000072 WO2013100863A2 (en) 2011-12-31 2013-02-22 Coaxial diaphragm loudspeaker unit and mirror coaxial diaphragm speaker

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CN102547539A true CN102547539A (en) 2012-07-04

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103118313A (en) * 2012-10-18 2013-05-22 中兴通讯股份有限公司 Sound cavity, sound cavity system and mobile terminal
CN103813225A (en) * 2012-11-12 2014-05-21 新加坡振源科技私人有限公司 Lighting speaker
CN106028232A (en) * 2016-05-18 2016-10-12 李世煌 Acoustic structure with passive diaphragm units
CN106028233A (en) * 2016-05-18 2016-10-12 李世煌 Acoustic structure equipped with passive diaphragm units

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1408194A (en) * 2000-02-17 2003-04-02 美国技术公司 Acoustically asymmetric bandpass loudspeaker with multiple acoustic filters
CN2618396Y (en) * 2003-05-29 2004-05-26 郝晋青 Binary body audio frequency loudspeaker
CN101600131A (en) * 2009-07-02 2009-12-09 深圳东原电子有限公司 A kind of passive radiator loudspeaker system
CN201813524U (en) * 2010-09-26 2011-04-27 北京爱德发科技有限公司 Passive radiator
CN202406279U (en) * 2011-12-31 2012-08-29 李世煌 Diaphragm integration loudspeaker and mirror image coaxial sound box

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1408194A (en) * 2000-02-17 2003-04-02 美国技术公司 Acoustically asymmetric bandpass loudspeaker with multiple acoustic filters
CN2618396Y (en) * 2003-05-29 2004-05-26 郝晋青 Binary body audio frequency loudspeaker
CN101600131A (en) * 2009-07-02 2009-12-09 深圳东原电子有限公司 A kind of passive radiator loudspeaker system
CN201813524U (en) * 2010-09-26 2011-04-27 北京爱德发科技有限公司 Passive radiator
CN202406279U (en) * 2011-12-31 2012-08-29 李世煌 Diaphragm integration loudspeaker and mirror image coaxial sound box

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103118313A (en) * 2012-10-18 2013-05-22 中兴通讯股份有限公司 Sound cavity, sound cavity system and mobile terminal
CN103813225A (en) * 2012-11-12 2014-05-21 新加坡振源科技私人有限公司 Lighting speaker
CN103813225B (en) * 2012-11-12 2018-06-29 新加坡振源科技私人有限公司 A kind of lighting sound box
CN106028232A (en) * 2016-05-18 2016-10-12 李世煌 Acoustic structure with passive diaphragm units
CN106028233A (en) * 2016-05-18 2016-10-12 李世煌 Acoustic structure equipped with passive diaphragm units

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