CN204669566U - A kind of Microspeaker module - Google Patents
A kind of Microspeaker module Download PDFInfo
- Publication number
- CN204669566U CN204669566U CN201520435787.4U CN201520435787U CN204669566U CN 204669566 U CN204669566 U CN 204669566U CN 201520435787 U CN201520435787 U CN 201520435787U CN 204669566 U CN204669566 U CN 204669566U
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- CN
- China
- Prior art keywords
- gas port
- speaker housings
- aperture
- big opening
- opening end
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- Expired - Fee Related
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- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
Abstract
The utility model relates to a kind of Microspeaker module, which solve the acoustical behavior of existing Microspeaker module to the technical problem of gas port sensitivity, it comprises speaker housings and loudspeaker monomer, speaker housings is connected with loudspeaker monomer, speaker housings is provided with gas port, and gas port is provided with osculum end and big opening end, and the aperture of big opening end is greater than the aperture of osculum end, osculum end is positioned at inside speaker housings, and big opening end is positioned at outside speaker housings.It can be widely used in the portability electronic equipments such as mobile phone, panel computer, notebook and wearable device.
Description
Technical field
The utility model relates to a kind of Microspeaker module, particularly relates to a kind of Microspeaker module with funnel type gas port.
Background technology
Microspeaker module is widely used in the portability electronic equipments such as mobile phone, panel computer, notebook and wearable device, along with the fast development of mobile device, requires more and more higher to the audio performance of terminal.In order to reach better audio performance, structure many employings monomer of Microspeaker module adds the design of closed back cavity, effectively can prevent acoustic short circuit like this, promote low frequency behavior.
In actual applications, be the air pressure inside and outside balance module, the back cavity of module is not the sealing in complete physical significance, generally punches in the part of shell away from monomer, is reached the object of air pressure balance by gas port.As the notification number Chinese utility model patent that is CN 201563212 U discloses the structure of gas port, this structure can also strengthen low frequency sensitivity while equilibrium air pressure, but perforate is larger, cavity becomes perforate design from the case design of closing acoustics meaning, seldom adopt because program distortion is high in actual applications, there is the problem of product poor practicability.In usual design, gas port diameter is generally at about 0.5mm, and in acoustics meaning, cavity still thinks hermetic design, but can conducting inner and outer air pressure.Gas port has a significant impact for the acoustical behavior of little back cavity module design (mobile phone or intelligent watch) especially, and the position, aperture, the degree of depth etc. of perforate determine harmonic distortion THD to a great extent.Obviously can observe from Fig. 5 of Figure of description, the up-down vibration of loud speaker has significantly asymmetric, this significantly asymmetric be the main cause causing system harmonics distortion high.
As shown in Fig. 1 of Figure of description, the acoustic damping of gas port 3 itself is normally inadequate, therefore can paste damping screen cloth 4 to increase damping on gas port 3, regulates acoustic impedance herein, thus adjustment acoustical behavior.The aperture of gas port 3 is generally 0.3-0.8mm, and the degree of depth, at 0.5-0.6mm, pastes damping screen cloth above, and the shape for gas port 3 does not have the code requirement of standard.
Summary of the invention
The utility model be exactly acoustical behavior in order to solve existing Microspeaker module to the technical problem of gas port sensitivity, a kind of Microspeaker module that effectively can reduce gas port and affect acoustical behavior is provided.
The technical solution of the utility model is, a kind of Microspeaker module is provided, comprise speaker housings and loudspeaker monomer, speaker housings is connected with loudspeaker monomer, speaker housings is provided with gas port, and gas port is provided with osculum end and big opening end, and the aperture of big opening end is greater than the aperture of osculum end, osculum end is positioned at inside speaker housings, and big opening end is positioned at outside speaker housings.
Preferably, the aperture of the osculum end of gas port is 0.2-0.4mm, and the aperture of big opening end is 0.4-1.0mm.
Preferably, gas port diminishes gradually from its big opening end to the aperture of osculum end.
Preferably, the inwall of gas port is cambered surface.
Preferably, the osculum end of gas port is connected with damping layer.
The beneficial effects of the utility model are, funnel type gas port is more conducive to the airflow inside and outside back cavity, reduce the susceptibility of whole product to gas port.Funnel type gas port can reduce the impact of gas port on acoustical behavior effectively, is conducive to the symmetry of loudspeaker monomer vibration, improves harmonic distortion.Specifically from Fig. 6 of Figure of description, the amplitude of up-down vibration substantially maintains symmetry in each frequency, greatly reduces the harmonic distortion of system.
Accompanying drawing explanation
Fig. 1 is the structural representation of prior art products;
Fig. 2 is structural representation of the present utility model;
Fig. 3 is a kind of distressed structure of funnel type gas port;
Fig. 4 is a kind of distressed structure of funnel type gas port;
Fig. 5 is the Oscillation Amplitude curve under different voltage drive that existing product is obtained by Klippel system scan;
Fig. 6 is the Oscillation Amplitude curve that the utility model product is obtained by Klippel system scan.
Symbol description in figure:
1. loudspeaker monomer; 2. speaker housings; 3. gas port; 4. damping screen cloth; 5. loudspeaker monomer; 6. speaker housings; 7. funnel type gas port, 8. damping screen cloth.The abscissa of Fig. 5 and Fig. 6 is frequency, and ordinate is vibration displacement size.
Embodiment
Referring to accompanying drawing, with specific embodiment, the utility model is described in further detail.
As shown in Figure 2, loudspeaker monomer 5 is wrapped to form closed back cavity by speaker housings 6, stamps a funnel type gas port 7 at shell away from loudspeaker monomer 5 place.Funnel type gas port 7 is provided with osculum end and big opening end, and the aperture of big opening end is greater than the aperture of osculum end, and osculum end is positioned at inside speaker housings 6, and big opening end is positioned at outside speaker housings 6.The aperture of osculum end is 0.2-0.4mm, and the aperture of big opening end is 0.4-1.0mm.
Damping layer can select damping screen cloth 8, and preferably, damping screen cloth 8 is connected with the osculum end of funnel type gas port 7.
Speaker housings 6 can select thickness to be the plastic production of 0.3-0.7mm, and the degree of depth of so corresponding funnel type gas port 7 is 0.3-0.7mm.
Speaker housings 6 also can select thickness to be that the metal of 0.1-0.3mm makes, and the degree of depth of so corresponding funnel type gas port 7 is 0.1-0.3mm.
As shown in Figure 3, a kind of distressed structure of funnel type gas port 7 diminishes gradually from big opening end to the aperture of osculum end.
As shown in Figure 4, the another kind of distressed structure of funnel type gas port 7 is its inwalls is cambered surface.
The inwall of funnel type gas port 7 can also be taper surface.
The above only to preferred embodiment of the present utility model, is not limited to the utility model, and for a person skilled in the art, the utility model can have various modifications and variations.Every in claim limited range of the present utility model, any amendment made, equivalent replacement, improvement etc., all should within protection range of the present utility model.
Claims (5)
1. a Microspeaker module, comprise speaker housings and loudspeaker monomer, described speaker housings is connected with described loudspeaker monomer, described speaker housings is provided with gas port, it is characterized in that, described gas port is provided with osculum end and big opening end, and the aperture of described big opening end is greater than the aperture of described osculum end, described osculum end is positioned at inside described speaker housings, and described big opening end is positioned at outside described speaker housings.
2. Microspeaker module according to claim 1, is characterized in that, the aperture of the osculum end of described gas port is 0.2-0.4mm, and the aperture of big opening end is 0.4-1.0mm.
3. Microspeaker module according to claim 1 and 2, is characterized in that, described gas port diminishes gradually from its big opening end to the aperture of osculum end.
4. Microspeaker module according to claim 1 and 2, is characterized in that, the inwall of described gas port is cambered surface.
5. Microspeaker module according to claim 1 and 2, is characterized in that, the osculum end of described gas port is connected with damping layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520435787.4U CN204669566U (en) | 2015-06-23 | 2015-06-23 | A kind of Microspeaker module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520435787.4U CN204669566U (en) | 2015-06-23 | 2015-06-23 | A kind of Microspeaker module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204669566U true CN204669566U (en) | 2015-09-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520435787.4U Expired - Fee Related CN204669566U (en) | 2015-06-23 | 2015-06-23 | A kind of Microspeaker module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204669566U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106101946A (en) * | 2016-06-17 | 2016-11-09 | 深圳市信维通信股份有限公司 | Speakerbox package assembly, system and method |
| CN108055601A (en) * | 2017-11-20 | 2018-05-18 | 瑞声科技(新加坡)有限公司 | Loudspeaker enclosure |
-
2015
- 2015-06-23 CN CN201520435787.4U patent/CN204669566U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106101946A (en) * | 2016-06-17 | 2016-11-09 | 深圳市信维通信股份有限公司 | Speakerbox package assembly, system and method |
| CN108055601A (en) * | 2017-11-20 | 2018-05-18 | 瑞声科技(新加坡)有限公司 | Loudspeaker enclosure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150923 Termination date: 20200623 |