CN103458337B - Loudspeaker module - Google Patents
Loudspeaker module Download PDFInfo
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- CN103458337B CN103458337B CN201310428391.2A CN201310428391A CN103458337B CN 103458337 B CN103458337 B CN 103458337B CN 201310428391 A CN201310428391 A CN 201310428391A CN 103458337 B CN103458337 B CN 103458337B
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- module
- shell
- acoustic aperture
- lower casing
- loudspeaker
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Abstract
The invention discloses a loudspeaker module and relates to the technical field of electroacoustic products. The loudspeaker module comprises a module shell, wherein a loudspeaker single body is placed in the module shell, a sound releasing hole used for adjusting air pressure in the module is formed in the module shell, a rear sound cavity is formed between the loudspeaker single body and the module shell, the sound releasing hole is formed in the position, corresponding to the rear sound cavity, of the module shell, the sound releasing hole is of a conic structure, and the diameters of the portions, located on the two sides of the module shell, of the sound releasing hole are different. The loudspeaker module has the advantages that the vibration space of a single side can be saved under the condition that space is limited, and requirements for miniaturization development of loudspeaker modules are met; noise can not be generated, and acoustic performance is high; radiating performance is good, and the service life is long.
Description
Technical field
The present invention relates to electro-acoustic product technical field, particularly to a kind of speaker module.
Background technology
Speaker module is the important acoustic element of portable electric appts, and it includes shell, houses in shell
Having loudspeaker monomer, be formed with the rear operatic tunes between loudspeaker monomer and shell, the rear operatic tunes is that loudspeaker monomer shakes
Space on rear side of film.In order to extend the service life of speaker module and improve the acoustical behavior of speaker module,
Technical staff would generally be provided with one on module shell and let out acoustic aperture, lets out acoustic aperture and can keep air-flow inside and outside module
Exchange, balance module inner chamber air pressure, also act as the effect of heat radiation simultaneously.
Acoustic aperture structure of letting out of the prior art is cylindrical structural, along with being increasingly miniaturized of speaker module,
Letting out acoustic aperture to be restricted by speaker module space and become more elongated, the acoustic aperture of letting out of this kind of slim-lined construction can not be effective
Carry out the exchange of air-flow inside and outside module, cause module internal air pressure unbalanced so that shaking of loudspeaker monomer
Film vibration displacement is unbalanced.The maximum displacement of diaphragm oscillations is laterally zygomorphic under normal circumstances, therefore in design
The space symmetr up and down of vibrating diaphragm can be made during product, but when the vibration displacement of vibrating diaphragm is unbalanced, vibrating diaphragm one
The vibration displacement of side can be relatively big, and the vibration displacement of opposite side can be less.Diaphragm oscillations displacement bigger one
Side, vibrating diaphragm can collide with other parts so that speaker module produce noise, in order to avoid vibrating diaphragm with
Other parts collide and are accomplished by increasing oscillation space, it is impossible to meet the miniaturization side of speaker module
To；In the side that diaphragm oscillations displacement is less, it will cause the waste of oscillation space.
Summary of the invention
The technical problem to be solved is to provide a kind of speaker module, and this speaker module vibrating diaphragm shakes
Dynamic displacement equilibrium, will not produce noise.
For solving above-mentioned technical problem, the technical scheme is that
A kind of speaker module, including module shell, contains loudspeaker monomer, institute in described module shell
State module shell and be provided with the acoustic aperture of letting out for regulating module internal gas pressure, described loudspeaker monomer and described shell
Between formed after the operatic tunes, described in let out acoustic aperture and be arranged on described shell the position corresponding to the described rear operatic tunes, institute
Stating and letting out acoustic aperture is pyramidal structure, described in let out acoustic aperture to be positioned at the caliber size of described shell both sides different.
As a kind of embodiment, described in let out the little one end of the bore of acoustic aperture and be positioned at the outside of described shell, institute
State and let out the big one end of the bore of acoustic aperture and be positioned at the inner side of described shell.
As another embodiment, described in let out the little one end of the bore of acoustic aperture and be positioned at the inner side of described shell,
One end that the described bore letting out acoustic aperture is big is positioned at the outside of described shell.
Wherein, described module shell includes module upper casing and the module lower casing combined, described speaker
Form the described rear operatic tunes between monomer and described module lower casing, described in let out acoustic aperture and be arranged on described module lower casing.
Wherein, described module shell includes module upper casing, module mesochite and the module lower casing combined,
Form the described rear operatic tunes between described loudspeaker monomer and described module lower casing, described in let out acoustic aperture and be arranged on described
On module lower casing.
Wherein, letting out acoustic aperture described in is conical structure.
Wherein, let out described in and at acoustic aperture, be pasted with damping screen.
After have employed technique scheme, the invention has the beneficial effects as follows:
Owing to containing loudspeaker monomer in the shell of speaker module of the present invention, module shell is provided with taper
Let out acoustic aperture.When air-flow inside and outside speaker module swaps, the letting out acoustic aperture and can regulate of pyramidal structure
The flow resistance of air-flow, air-flow flows to one end that bore is less from one end that the bore of pyramidal structure is bigger
Resistance is less than the resistance of opposite direction flowing, it is possible to the air pressure outside the air pressure of module internal and module is differed
Cause, thus control the vibration displacement ratio of the vibrating diaphragm of loudspeaker monomer so that the vibration displacement equilibrium of vibrating diaphragm.
If the displacement that vibrating diaphragm upwards vibrates is big, one end less for the bore letting out acoustic aperture can be arranged on module shell
Outside, one end that bore is bigger is arranged on the inner side of module shell, reduces the air pressure of module inner chamber so that
The vibration displacement equilibrium of vibrating diaphragm；If the displacement that vibrating diaphragm vibrates downwards is big, can be less by the bore letting out acoustic aperture
One end be arranged on the inner side of module shell, one end that bore is bigger is arranged on the outside of module shell, increases
The air pressure of module inner chamber so that the vibration displacement equilibrium of vibrating diaphragm.Visible, the present invention is in the condition of limited space
Under, monolateral oscillation space can be saved, meet the requirement of speaker module miniaturization；And will not produce
Raw noise, acoustical behavior is high.
Accompanying drawing explanation
Fig. 1 is the stereo decomposing structural representation of speaker module embodiment one of the present invention；
Fig. 2 is the constitutional diagram of Fig. 1；
Fig. 3 is the line A-A cutaway view Amplified image of Fig. 2；
Fig. 4 is the stereo decomposing structural representation of the loudspeaker monomer of speaker module embodiment one of the present invention；
Fig. 5 is the cross-sectional view of speaker module embodiment two of the present invention；
In figure: 10, module upper casing, 20a, module lower casing, 20b, module lower casing, 22a, let out acoustic aperture, 22b,
Let out acoustic aperture, 30, loudspeaker monomer, 32, monomer protecgulum, 34, monomer shell, 360, vibrating diaphragm, 362,
Voice coil loudspeaker voice coil, 364, top dome, 380, interior washer, 382, outer washer, 384, internal magnet, 386, external magnet,
388, frame, 40, damping screen.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment, the present invention is expanded on further.
Embodiment one:
As it is shown in figure 1, a kind of speaker module, including under the module upper casing 10 combined and module
Contain loudspeaker monomer 30 in the space that shell 20a, module upper casing 10 and module lower casing 20a surround, raise one's voice
It is formed with the rear operatic tunes between device monomer 30 and module lower casing 20a.The position of the operatic tunes after correspondence on module lower casing 20a
Install and let out acoustic aperture 22a for regulate module inner chamber air pressure.
As Fig. 2 and Fig. 3 jointly shown in, definition module lower casing 20a be interior near the side of loudspeaker monomer 30
Side, opposite side is outside, and letting out acoustic aperture 22a is conical structure, lets out acoustic aperture 22a and is positioned at module lower casing 20a
One end bore in outside less, one end bore of its inner side being positioned at module lower casing 20a is bigger.Let out acoustic aperture
One end that 22a is positioned at outside module lower casing 22a is pasted with damping screen 40.
As shown in Figure 4, loudspeaker monomer 30 includes monomer protecgulum 32 and the monomer shell 34 being combined as a whole,
The dynamic system of vibration and magnetic circuit system is contained in the space that monomer protecgulum 32 and monomer shell 34 surround.Vibration
System includes the vibrating diaphragm 360 that edge part is fixed between monomer protecgulum 32 and monomer shell 34, vibrating diaphragm 360
The side of monomer protecgulum 32 is fixed with voice coil loudspeaker voice coil 362 dorsad, and the middle part of the opposite side of vibrating diaphragm 360 is fixed with
Top dome 364.Magnetic circuit system includes the frame 388 being combined with monomer shell 34, and frame 388 is sequentially provided with
Internal magnet 384 and interior washer 380, the external magnet 386 being respectively provided on two sides with a bar shaped of internal magnet, two pieces
The outer washer 382 of one piece of bar shaped it is provided with respectively on external magnet 386.Internal magnet 384 and interior washer 380 groups
Becoming internal magnetic circuit, external magnet 386 and outer washer 382 form external magnetic circuit, leave magnetic between internal magnetic circuit and external magnetic circuit
Gap, the end of voice coil loudspeaker voice coil 362 is positioned at magnetic gap.
Acoustic aperture of letting out in the present embodiment elects conical structure as, is because comparing appearance adding conical structure in man-hour
Easily realize, for the preferred version of the present invention, in actual application other pyramidal structure can obtain too with
The effect that conical structure is the same, such as triangular pyramidal, side's taper or some other polygonal cone.
The operation principle of the present embodiment speaker module is as follows:
Voice coil loudspeaker voice coil 362 does reciprocating cutting magnetic force according to the size and Orientation by the electric current of its coil in magnetic gap
Line moves, and drives vibrating diaphragm 360 to vibrate, and vibrating diaphragm 360 is instigated air and sent sound, thus completes electroacoustic
Conversion.When vibrating diaphragm 360 vibrates, the air pressure of module inner chamber can change, and then by letting out acoustic aperture 22a
Air-flow exchange is carried out with the external world.The present embodiment is let out the less one end of acoustic aperture 22a bore and is positioned at module lower casing 20a
Outside, one end that bore is bigger is positioned at the inner side of module lower casing 20a, then air-flow is from module inner chamber outwardly
The resistance of flowing is little, and air-flow is big to the resistance of module inner chamber flowing from the external world, so that the gas of module inner chamber
The air pressure that pressure is extraneous less than module, can reduce the vibrating diaphragm 360 vibration displacement to module upper casing 10 direction, can
See the speaker module that present embodiment suitable vibrating diaphragm upwards vibration displacement is big, the vibration of vibrating diaphragm 360 can be equalized
Displacement, save the space between vibrating diaphragm 360 and monomer protecgulum 32, it is to avoid vibrating diaphragm 360 and monomer protecgulum
32 collide, and eliminate noise, improve the performance of speaker module.
Separately, the structure of the loudspeaker monomer in the present invention is not limited to said structure, raising one's voice of the present embodiment introduction
The structure of device monomer is intended merely to draw vibrating diaphragm, enables the personnel reading this specification to understand this more intuitively
The operation principle of invention, installs the speaker module of other any structure of loudspeaker monomer in actual application
Technical scheme is used to realize the technique effect of diaphragm oscillations displacement equilibrium, the structure of loudspeaker monomer
It not the invention main points of the present invention, therefore describe in detail the most one by one at this.
Embodiment two:
As it is shown in figure 5, present embodiment is essentially identical with embodiment one, its difference is:
One end bore letting out the inner side that acoustic aperture 22b is positioned at module lower casing 20b is less, lets out acoustic aperture 22b and is positioned at mould
One end bore in the outside of group lower casing 20b is bigger.
Present embodiment, the resistance that air-flow outwardly flows from module inner chamber is big, from the external world to module inner chamber stream
Dynamic resistance is little, so that the air pressure in module is more than ambient pressure, can reduce what vibrating diaphragm vibrated downwards
Displacement, the speaker module that the downward vibration displacement of suitable vibrating diaphragm is big.
In the present invention, the definition of module upper casing and module lower casing is the usual call of this area, speaker module sound
The side that sound sends is upper, under opposite side is.It is relative that module upper casing only represents therebetween with module lower casing
Position relationship, does not represent absolute positional relation therebetween.
The module shell of the present invention is two shell structures, and the present invention lets out the technology that acoustic aperture is taper in actual applications
Scheme is equally applicable in three shells or other shell mechanism, and the shell of three shell modules includes combining
Module upper casing, module mesochite and module lower casing, let out acoustic aperture and be arranged on module lower casing.The most several shell structures,
Letting out acoustic aperture to be the most all located on the lower casing of speaker module, those skilled in the art are according to the introduction of this specification
Need not performing creative labour to be paid and the technical program just can be transplanted to the speaker module of other structure
In, therefore be not described in detail in this.
The present invention is not limited to above-mentioned specific embodiment, and those of ordinary skill in the art is from above-mentioned design
Set out, without performing creative labour, done all conversion, all fall within protection scope of the present invention it
In.
Claims (7)
1. speaker module, including module shell, contains loudspeaker monomer in described module shell, and it is special
Levying and be, described module shell is provided with and shakes for the vibrating diaphragm regulating module internal gas pressure and described loudspeaker monomer
Dynamic displacement let out acoustic aperture, the operatic tunes after being formed between described loudspeaker monomer and described shell, described in let out acoustic aperture and set
Be placed on described shell the position corresponding to the described rear operatic tunes, described in let out acoustic aperture be pyramidal structure, described in let out sound
The caliber size that hole is positioned at described shell both sides is different.
Speaker module the most according to claim 1, it is characterised in that described in let out the bore of acoustic aperture little
One end be positioned at the outside of described shell, described in let out the big one end of the bore of acoustic aperture and be positioned at the inner side of described shell.
Speaker module the most according to claim 1, it is characterised in that described in let out the bore of acoustic aperture little
One end be positioned at the inner side of described shell, described in let out the big one end of the bore of acoustic aperture and be positioned at the outside of described shell.
4. according to the speaker module described in Claims 2 or 3, it is characterised in that described module shell bag
Include the module upper casing and module lower casing combined, shape between described loudspeaker monomer and described module lower casing
Become the described rear operatic tunes, described in let out acoustic aperture and be arranged on described module lower casing.
5. according to the speaker module described in Claims 2 or 3, it is characterised in that described module shell bag
Include module upper casing, module mesochite and the module lower casing combined, described loudspeaker monomer and described module
Form the described rear operatic tunes between lower casing, described in let out acoustic aperture and be arranged on described module lower casing.
Speaker module the most according to claim 1, it is characterised in that described in let out acoustic aperture for cone
Structure.
Speaker module the most according to claim 1, it is characterised in that described in let out and be pasted with at acoustic aperture
Damping screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310428391.2A CN103458337B (en) | 2013-09-18 | 2013-09-18 | Loudspeaker module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310428391.2A CN103458337B (en) | 2013-09-18 | 2013-09-18 | Loudspeaker module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103458337A CN103458337A (en) | 2013-12-18 |
| CN103458337B true CN103458337B (en) | 2017-01-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310428391.2A Active CN103458337B (en) | 2013-09-18 | 2013-09-18 | Loudspeaker module |
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| Country | Link |
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| CN (1) | CN103458337B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104602168B (en) * | 2014-12-31 | 2018-01-09 | 宇龙计算机通信科技(深圳)有限公司 | A kind of Microspeaker module and its design method |
| CN106101954A (en) * | 2016-07-20 | 2016-11-09 | 瑞声科技(新加坡)有限公司 | Loudspeaker enclosure and there is the electronic equipment of this loudspeaker enclosure |
| CN107613439B (en) * | 2017-10-20 | 2019-12-20 | 维沃移动通信有限公司 | Electronic equipment and speaker of electronic equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201563212U (en) * | 2009-11-30 | 2010-08-25 | 华为终端有限公司 | Sound cavity and mobile terminal thereof |
| CN103002385A (en) * | 2012-09-14 | 2013-03-27 | 精拓丽音科技（北京）有限公司 | Miniature loudspeaker module structure with adaptive pressure balancing function |
| CN103051986A (en) * | 2011-10-13 | 2013-04-17 | 海能达通信股份有限公司 | Sound chamber structure and electroacoustic product |
| CN203466959U (en) * | 2013-09-18 | 2014-03-05 | 歌尔声学股份有限公司 | Loudspeaker module group |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE112007000845T5 (en) * | 2006-04-04 | 2009-05-28 | Knowles Electronics, LLC, Itasca | Converter monitor system and manufacturing method for this |
| CN103024614A (en) * | 2011-09-20 | 2013-04-03 | 深圳富泰宏精密工业有限公司 | Speaker protecting component and portable electronic device employing same |
-
2013
- 2013-09-18 CN CN201310428391.2A patent/CN103458337B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201563212U (en) * | 2009-11-30 | 2010-08-25 | 华为终端有限公司 | Sound cavity and mobile terminal thereof |
| CN103051986A (en) * | 2011-10-13 | 2013-04-17 | 海能达通信股份有限公司 | Sound chamber structure and electroacoustic product |
| CN103002385A (en) * | 2012-09-14 | 2013-03-27 | 精拓丽音科技（北京）有限公司 | Miniature loudspeaker module structure with adaptive pressure balancing function |
| CN203466959U (en) * | 2013-09-18 | 2014-03-05 | 歌尔声学股份有限公司 | Loudspeaker module group |
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| CN103458337A (en) | 2013-12-18 |
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Address after: 261031 Dongfang Road, Weifang high tech Industrial Development Zone, Shandong, China, No. 268 Applicant after: Goertek Inc. Address before: 261031 Dongfang Road, Weifang high tech Industrial Development Zone, Shandong, China, No. 268 Applicant before: Goertek Inc. |
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