CN109819373A - Loudspeaker enclosure - Google Patents
Loudspeaker enclosure Download PDFInfo
- Publication number
- CN109819373A CN109819373A CN201811609862.9A CN201811609862A CN109819373A CN 109819373 A CN109819373 A CN 109819373A CN 201811609862 A CN201811609862 A CN 201811609862A CN 109819373 A CN109819373 A CN 109819373A
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- CN
- China
- Prior art keywords
- air channel
- wall
- loudspeaker enclosure
- back cavity
- sound
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- 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.)
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Abstract
The present invention provides a kind of loudspeaker enclosures comprising the sounding monomer for having the shell of accommodating space and being contained in the accommodating space；The shell includes the outer wall being oppositely arranged and inner wall and is recessed the multiple air channels formed from the inner wall to the outer wall direction；The accommodating space is separated into ante-chamber and back cavity by the sounding monomer, is filled out in the back cavity equipped with sound-absorbing particle, and the air channel is connected to the back cavity, and the width of rebate of the air channel is less than the partial size of the sound-absorbing particle.Compared with the relevant technologies, the frequency acoustic performance of loudspeaker enclosure of the invention is high.
Description
[technical field]
The present invention relates to electroacoustic conversion art more particularly to a kind of loudspeaker enclosures for applying to portable electronic product.
[background technique]
With the arrival of mobile internet era, 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.Currently, the function of mobile phone is extremely various, 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 hair that the loudspeaker enclosure of the relevant technologies includes the shell with accommodating space, is contained in the accommodating space
Sound monomer and the supporting walls extended from the shell to the accommodating space；The sounding monomer is fixedly supported to the support
Wall, the sounding monomer include the vibrating diaphragm for vibration sounding, and the vibrating diaphragm, the supporting walls and the shell surround jointly
Ante-chamber, the operatic tunes and back cavity before the accommodating space is separated by the sounding monomer, the back cavity is interior to fill sound-absorbing particle.In order to
Better low frequency performance is pursued, under the premise of not changing the back cavity volume, by filling sound-absorbing particle, institute in the back cavity
Stating sound-absorbing particle is porous media material, can play the role of increasing the back cavity equivalent volume, to raise described in reducing
Sound device case lowest resonance frequency F0.
However, since the air circulation of the closed back cavity is poor, when the back cavity be filled with it is a certain number of described
After sound-absorbing particle, the part sound-absorbing particle that will lead to the air entrance location far from the back cavity can not play absorption sky
The effect of gas molecule causes the part sound-absorbing particle that can not play the role of increasing back cavity volume, to be unable to fully utilize
Cavity space after described causes the loudspeaker enclosure low frequency performance to be deteriorated.
Therefore, it is really necessary to provide a kind of new loudspeaker enclosure solution above-mentioned technical problem.
[summary of the invention]
The purpose of the present invention is to provide a kind of loudspeaker enclosures that frequency acoustic performance is high.
In order to achieve the above objectives, the present invention provides a kind of loudspeaker enclosure comprising shell and receiving with accommodating space
In the sounding monomer in the accommodating space；The shell includes the outer wall being oppositely arranged and inner wall and from the inner wall to institute
Outer wall direction is stated to be recessed the multiple air channels to be formed；The accommodating space is separated into ante-chamber and back cavity by the sounding monomer, institute
It states and is filled out in back cavity equipped with sound-absorbing particle, the air channel is connected to the back cavity, and the width of rebate of the air channel is less than described
The partial size of sound-absorbing particle.
Preferably, the partial size of the sound-absorbing particle is 0.3mm, and the width of rebate of the air channel is less than 0.3mm.
Preferably, multiple air channels are in net distribution.
Preferably, the shell is in rectangle, and multiple air channels are respectively parallel to the long axis or short axle of the shell
Setting.
Preferably, the groove width far from the outer wall side of the air channel is equal to the close described outer of the air channel
The groove width of wall side.
Preferably, the groove width far from the outer wall side of the air channel is less than the close described outer of the air channel
The groove width of wall side.
Preferably, the groove width far from the outer wall side of the air channel is greater than the close described outer of the air channel
The groove width of wall side.
Preferably, the air channel is that injection molding or grooving mode are formed.
Compared with the relevant technologies, setting and the back cavity on the inner wall that loudspeaker enclosure of the invention passes through the shell
Multiple air channels of connection, and make the width of rebate of the air channel less than the partial size of the sound-absorbing particle.The structure energy
Enough under the premise of not having to additionally increase the back cavity occupied space, it is effectively improved the mobility of the back cavity air, so that position
The sound-absorbing particle in the back cavity bottom or rear portion can adequately play the role of adsorbing air molecule, make full use of institute
Rear cavity space is stated, so that the loudspeaker enclosure reaches better low frequency performance.
[Detailed description of the invention]
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing, in which:
Fig. 1 is the schematic perspective view of loudspeaker enclosure of the present invention；
Fig. 2 is the schematic perspective view of another angle of loudspeaker enclosure of the present invention；
Fig. 3 is the part isometric structural exploded view of loudspeaker enclosure of the present invention；
Fig. 4 is the line A-A cross-sectional view along Fig. 1；
Fig. 5 is the line B-B cross-sectional view along Fig. 2；
Fig. 6 is the inner wall and air channel partial schematic diagram of loudspeaker enclosure of the present invention；
Fig. 7 is that the part isometric structure that the cross-sectional shape of loudspeaker enclosure of the present invention is rectangular channel and sound-absorbing particle is shown
It is intended to；
Fig. 8 is the simulation result curve graph of the loudspeaker enclosure of loudspeaker enclosure of the present invention and the loudspeaker enclosure of the relevant technologies.
[specific embodiment]
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that the described embodiments are merely a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts all other
Embodiment shall fall within the protection scope of the present invention.
Please refer to Fig. 1-5, the present invention provides a kind of loudspeaker enclosures 100 comprising shell 1, sounding monomer 2, branch
Support wall 3 and sound-absorbing particle 4.
The shell 1 has accommodating space 10.The shell 1 can be structure as a whole, and can also be separate structure.In this implementation
In mode, the shell 1 is structure as a whole.Specifically, the shell 1 includes outer wall 11, inner wall 12, air channel 13, balancing orifice
14。
The outer wall 11 and the inner wall 12 are oppositely arranged.
The air channel 13 is recessed from the inner wall 12 to 11 direction of outer wall and is formed.The air channel 13 be injection molding or
Grooving mode is formed.
The balancing orifice 14 runs through the shell 1.
The sounding monomer 2 is contained in the accommodating space 10.The sounding monomer 2 includes the vibration for vibration sounding
The accommodating space 10 is separated into ante-chamber 101 and back cavity 102 by film 21, the sounding monomer 2.The vibrating diaphragm 21, the support
Wall 3 and the inner wall 12 surround ante-chamber 101 jointly, and the ante-chamber 101 is used to improve the high-frequency acoustic of the loudspeaker enclosure 100
Performance.The accommodating space 10 is separated into ante-chamber 101 and back cavity 102 by the sounding monomer 2, and the back cavity 102 is for improving
The frequency acoustic performance of the loudspeaker enclosure 100.
The supporting walls 3 are extended from the shell 1 to the accommodating space 10.In the present embodiment, the sounding list
Body 2 is fixedly supported to the supporting walls 3.The sounding monomer 2 is supported in the supporting walls 3 and forms sealing structure.It needs
Bright, the sounding monomer 2 is fixedly supported to the supporting walls 3 and refers to that the branch is fixed in the side support of the vibrating diaphragm 21
Support wall 3.Certainly, the sounding monomer 2 can also divide the accommodating space 10 it is also not necessary to be supported in the supporting walls 3
It is divided into ante-chamber 101 and back cavity 102, in this structure, it is also possible not need the supporting walls 3.
It fills out in the back cavity 102 and is filled in the back cavity 102 equipped with sound-absorbing particle 4, that is, the sound-absorbing particle 4.
The sound-absorbing particle 4 is porous media material.The sound-absorbing particle 4 is filled in the back cavity 102 as sound-absorbing material, can
Play the role of increasing 102 equivalent volume of back cavity, to reduce by the 100 lowest resonance frequency F0 of loudspeaker enclosure, make
The back cavity 102 becomes the virtual operatic tunes, to keep the frequency acoustic performance of loudspeaker enclosure 100 good.
In the present embodiment, the air channel 13 is connected to the back cavity 102.The back cavity 102 is pressed by described
Hole 14 is in communication with the outside.The effect of the balancing orifice 14 is that the air by 21 rear of vibrating diaphragm completely cuts off completely with front air
It opens, front in anti-phase with rear position acoustic pressure is avoided to cancel out each other；Another effect is to balance the cavity inner and outer air pressure of the back cavity 102, protect
Card displacement does not generate excessive DC component, influences its reliability.
In order to more preferably make the air circulation of the back cavity 102, the air channel 13 includes multiple, multiple air channels 13
In net distribution.Specifically, the shell 1 be in rectangle, multiple air channels 13 be respectively parallel to the shell 1 long axis or
The setting of person's short axle.That is, each described air channel 13 is parallel to the long axis or short axle of the shell 1, each institute
It states air channel 13 and is parallel to each other to be spaced with multiple air channels 13 and be arranged and mutually handed over in addition multiple air channels 13
Fork setting.More preferably, each described air channel 13 is mutually perpendicular to arranged in a crossed manner with multiple air channels 13.
Referring to Fig. 6, certainly, without being limited thereto, each air channel 13 can also be not parallel to the length of the shell 1
Axis or short axle can optimize institute according to the shape of the inner wall 12 of the back cavity 102, such as the surface of radian, bending
The net distribution for stating air channel 13, its purpose is to the sound-absorbing materials of deeper inside to be contacted with air molecule.
Specifically, the width of rebate of the air channel 13 is less than the partial size of the sound-absorbing particle 4.The air channel 13 is main
Effect is that gas permeable barrier avoids sound-absorbing material blocking channel while guaranteeing air circulation.In the present embodiment, the suction
The partial size of sound particle 4 is 0.3mm, and the width of rebate of the air channel 13 is less than 0.3mm.The structure ensure that the sound-absorbing particle
4, which will not fall into the air channel 13, results in blockage, to guarantee the air circulation of the air channel 13.
In the present embodiment, since the width of rebate of the air channel 13 is less than the partial size of the sound-absorbing particle 4, so
Some 4 parts of sound-absorbing particle are arranged in the air channel 13 and with the air channel 13 close to the side of the outer wall 11
Interval setting.The structure make the inner wall 12 in the back cavity 102 be formed in bottom air circulation channel, make it is described
The air in pressure hole 14 can reach one end farthest from the balancing orifice 14.To guarantee far from the farthest one end of the balancing orifice 14
The sound-absorbing particle 4 at (bottom of the i.e. described back cavity 102 and the rear portion far from the balancing orifice 14) can be transferred through the ventilation
Slot 13 is connected to outside air, make the position the sound-absorbing particle 4 sufficiently absorption air molecule, thus make full use of it is described after
The space of chamber 102 makes the loudspeaker enclosure 100 reach better low frequency performance.
Referring to Fig. 7, the groove width far from 11 side of outer wall of the air channel 13 is equal to leaning on for the air channel
The groove width of nearly 11 side of outer wall, the shape of the cross section of the air channel 13 are rectangular.The simple process of the structure and
High reliablity is a kind of structure for fully meeting ventilation and the sound-absorbing particle 4 being stopped to block.
Certainly, without being limited thereto, the groove width far from 11 side of outer wall of the air channel 13 is less than the air channel
13 groove width close to 11 side of outer wall.Such 13 moulding of the air channel can be such as described logical there are many form
The groove width of air drain 13 is gradually increased by the direction of the laterally closer outer wall 11 far from the outer wall 11, such as described logical
The shape of the cross section of air drain 13 is upright trapezoidal.Certainly, if the groove width of the air channel 13 is by far from the outer wall 11
The direction of the one laterally closer outer wall 11 becomes smaller again after being gradually increased, this is also feasible, such as the cross of the air channel 13
The shape in section is semicircle.
Certainly, without being limited thereto, as long as the width of rebate for meeting the air channel 13 is less than the partial size of the sound-absorbing particle 4
The shape of condition be all possible, that is to say, that as long as guarantee to can guarantee the air channel 13 of air circulation is all can be with
It uses.There may also be following moulding, the groove width far from 11 side of outer wall of the air channel 13 is greater than described logical
The groove width close to 11 side of outer wall of air drain 13, for example, the air channel 13 cross section shape include it is cylindrical and
It stands upside down trapezoidal.
Referring to Fig. 8, the contrast simulation of loudspeaker enclosure 100 and the relevant technologies loudspeaker enclosure through the invention, tests institute
State the bottom air flow of back cavity 102, wherein the bottom air flow of the back cavity 102 of C the relevant technologies loudspeaker enclosure is bent
Line, the bottom air flow curve of the back cavity 102 of D loudspeaker enclosure 100 of the present invention.
Emulation statistics indicate that: the loudspeaker enclosure 100 increases the air channel on the inner wall 12 of the back cavity 102
After 13, the air mass flow of 102 bottom of back cavity increases about 15% compared to the relevant technologies loudspeaker enclosure, therefore for air
The utilization rate of circulation and sound-absorbing material has preferable improvement result.
Compared with the relevant technologies, setting and the back cavity on the inner wall that loudspeaker enclosure of the invention passes through the shell
Multiple air channels of connection, and make the width of rebate of the air channel less than the partial size of the sound-absorbing particle.The structure energy
Enough under the premise of not having to additionally increase the back cavity occupied space, it is effectively improved the mobility of the back cavity air, so that position
The sound-absorbing particle in the back cavity bottom or rear portion can adequately play the role of adsorbing air molecule, make full use of institute
Rear cavity space is stated, so that the loudspeaker enclosure reaches better low frequency performance.
Above-described is only embodiments of the present invention, it should be noted here that for those 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 protection model of the invention
It encloses.
Claims (8)
1. a kind of loudspeaker enclosure comprising the sounding monomer that there is the shell of accommodating space and be contained in the accommodating space；
The shell includes the outer wall and inner wall being oppositely arranged；The accommodating space is separated into ante-chamber and back cavity by the sounding monomer,
It is filled out in the back cavity equipped with sound-absorbing particle, which is characterized in that the shell further includes recessed from the inner wall to the outer wall direction
The multiple air channels formed are fallen into, the air channel is connected to the back cavity, and the width of rebate of the air channel is less than the sound-absorbing
The partial size of particle.
2. loudspeaker enclosure according to claim 1, which is characterized in that the partial size of the sound-absorbing particle is 0.3mm, described logical
The width of rebate of air drain is less than 0.3mm.
3. loudspeaker enclosure according to claim 1, which is characterized in that multiple air channels are in net distribution.
4. loudspeaker enclosure according to claim 3, which is characterized in that the shell is in rectangle, multiple air channels point
It is not parallel to long axis or the short axle setting of the shell.
5. loudspeaker enclosure according to claim 1, which is characterized in that the slot far from the outer wall side of the air channel
Width is equal to the groove width close to the outer wall side of the air channel.
6. loudspeaker enclosure according to claim 1, which is characterized in that the slot far from the outer wall side of the air channel
Width is less than the groove width close to the outer wall side of the air channel.
7. loudspeaker enclosure according to claim 1, which is characterized in that the slot far from the outer wall side of the air channel
Width is greater than the groove width close to the outer wall side of the air channel.
8. loudspeaker enclosure according to claim 1, which is characterized in that the air channel is that injection molding or grooving mode are formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811609862.9A CN109819373A (en) | 2018-12-27 | 2018-12-27 | Loudspeaker enclosure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811609862.9A CN109819373A (en) | 2018-12-27 | 2018-12-27 | Loudspeaker enclosure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109819373A true CN109819373A (en) | 2019-05-28 |
Family
ID=66602621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811609862.9A Pending CN109819373A (en) | 2018-12-27 | 2018-12-27 | Loudspeaker enclosure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109819373A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111131575A (en) * | 2019-12-13 | 2020-05-08 | 歌尔股份有限公司 | Sound generating device module and electronic product |
| CN112995378A (en) * | 2021-02-09 | 2021-06-18 | 荣耀终端有限公司 | Loudspeaker module and electronic equipment |
| CN113365170A (en) * | 2021-05-14 | 2021-09-07 | 荣耀终端有限公司 | Loudspeaker module and electronic equipment |
| CN113438342A (en) * | 2021-05-21 | 2021-09-24 | 荣耀终端有限公司 | Loudspeaker module and electronic equipment |
| CN115152244A (en) * | 2020-02-21 | 2022-10-04 | 三星电子株式会社 | Speaker module and electronic device including the same |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080219489A1 (en) * | 2007-03-07 | 2008-09-11 | Foxconn Technology Co., Ltd. | Speaker set and electronic product incorporating the same |
| CN207039886U (en) * | 2017-06-29 | 2018-02-23 | 山东共达电声股份有限公司 | A kind of sound-absorbing material of loudspeaker module |
| CN207099322U (en) * | 2017-08-02 | 2018-03-13 | 瑞声科技(新加坡)有限公司 | Loudspeaker enclosure |
| US20180115820A1 (en) * | 2016-10-25 | 2018-04-26 | Aac Acoustic Technologies (Shenzhen) Co., Ltd | Speaker Box |
-
2018
- 2018-12-27 CN CN201811609862.9A patent/CN109819373A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080219489A1 (en) * | 2007-03-07 | 2008-09-11 | Foxconn Technology Co., Ltd. | Speaker set and electronic product incorporating the same |
| US20180115820A1 (en) * | 2016-10-25 | 2018-04-26 | Aac Acoustic Technologies (Shenzhen) Co., Ltd | Speaker Box |
| CN207039886U (en) * | 2017-06-29 | 2018-02-23 | 山东共达电声股份有限公司 | A kind of sound-absorbing material of loudspeaker module |
| CN207099322U (en) * | 2017-08-02 | 2018-03-13 | 瑞声科技(新加坡)有限公司 | Loudspeaker enclosure |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111131575A (en) * | 2019-12-13 | 2020-05-08 | 歌尔股份有限公司 | Sound generating device module and electronic product |
| CN111131575B (en) * | 2019-12-13 | 2021-07-27 | 歌尔股份有限公司 | Sound generating device module and electronic product |
| CN115152244A (en) * | 2020-02-21 | 2022-10-04 | 三星电子株式会社 | Speaker module and electronic device including the same |
| CN112995378A (en) * | 2021-02-09 | 2021-06-18 | 荣耀终端有限公司 | Loudspeaker module and electronic equipment |
| CN113365170A (en) * | 2021-05-14 | 2021-09-07 | 荣耀终端有限公司 | Loudspeaker module and electronic equipment |
| CN113438342A (en) * | 2021-05-21 | 2021-09-24 | 荣耀终端有限公司 | Loudspeaker module and electronic equipment |
| CN113438342B (en) * | 2021-05-21 | 2022-07-01 | 北京荣耀终端有限公司 | Loudspeaker module and electronic equipment |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190528 |
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| RJ01 | Rejection of invention patent application after publication |