CN204906679U - Sounding device - Google Patents
Sounding device Download PDFInfo
- Publication number
- CN204906679U CN204906679U CN201520547495.XU CN201520547495U CN204906679U CN 204906679 U CN204906679 U CN 204906679U CN 201520547495 U CN201520547495 U CN 201520547495U CN 204906679 U CN204906679 U CN 204906679U
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- China
- Prior art keywords
- encapsulated layer
- microphone device
- sound absorption
- cavity
- paper
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Abstract
The utility model discloses a sounding device, its including the casing that has a cavity with install in vocal ware unit on the casing, sounding device further including set up in sound absorption device in the cavity, the sound absorption device includes the sound absorption powder and incites somebody to action sound absorption powder involution in encapsulated layer in the sound absorption device, a plurality of bleeder vents have been seted up to the encapsulated layer, the aperture of bleeder vent is 0.05 millimeter to 0.12 millimeter. The utility model provides a sounding device low frequency performance is good.
Description
[technical field]
The utility model relates to a kind of microphone device, particularly relates to a kind of microphone device be used on portable type electronic product.
[background technology]
In the process of the portable type electronic product fast developments such as mobile phone, user is more and more stronger to the Functional Requirement of product, thus, and the development also corresponding quickening of microphone device.
The microphone device of correlation technique, it comprises the housing with cavity and the acoustical generator unit be installed on described housing.Because cavity is enclosed construction and cavity volume is smaller, so the resonance frequency of microphone device is high, causes the low frequency performance of microphone device poor, be difficult to play out simple and honest abundant bass.But the miniaturization of microphone device again limit the specification of microphone device, the low frequency performance improving microphone device by enlarged cavities is merely difficult to realize.
In order to improve the problem of low frequency performance, the microphone device of correlation technique takes filling sucting sound material in cavity, and sound-absorbing material is by nonwoven fabrics involution.But the gas permeability of nonwoven fabrics is inadequate, damping is comparatively large, causes the low frequency performance of the microphone device of correlation technique to improve limited.
Therefore, be necessary to provide a kind of new technical scheme to overcome above-mentioned defect in fact.
[utility model content]
The purpose of this utility model is to provide the good microphone device of a kind of low frequency performance.
The purpose of this utility model is achieved in that
A kind of microphone device, it comprises the housing with cavity and the acoustical generator unit be installed on described housing, described microphone device comprises the sound absorber be arranged in described cavity further, described sound absorber comprises sound absorption powder and by the encapsulated layer of described sound absorption powder involution in described sound absorber, described encapsulated layer offers some air-vents, and the aperture of described air-vent is 0.05 millimeter to 0.12 millimeter.
Preferably, described sound absorber comprises the shell with receiving space, described sound absorption powder packed in described receiving space, described encapsulated layer by described sound absorption powder involution in described receiving space.
Preferably, described sound absorber is the accommodation bag surrounded by described encapsulated layer, described sound absorption powder packed in described accommodation bag, described encapsulated layer by described sound absorption powder involution in described accommodation bag.
Preferably, described encapsulated layer is nonwoven fabrics, dust-proof screen cloth, filter paper, Du Pont's paper, leaching membrane paper, reticulate pattern paper and wire netting one wherein.
A kind of microphone device, it comprises the housing with cavity and the acoustical generator unit be installed on described housing, described microphone device also comprises encapsulated layer further, described cavity is divided into ante-chamber and the back cavity relative with described ante-chamber by described encapsulated layer, described acoustical generator unit is arranged in described ante-chamber, described microphone device also comprises the sound absorption powder be filled in described back cavity further, described encapsulated layer by described sound absorption powder involution in described back cavity, described encapsulated layer offers some air-vents, and the aperture of described air-vent is 0.05 millimeter to 0.12 millimeter.
Preferably, described housing is provided with the extension extended in cavity, and described encapsulated layer is combined in described extension.
Preferably, described encapsulated layer is nonwoven fabrics, dust-proof screen cloth, filter paper, Du Pont's paper, leaching membrane paper, reticulate pattern paper and wire netting one wherein.
The utility model has the following advantages: the microphone device low frequency performance that the utility model provides is good.
[accompanying drawing explanation]
The structural representation of the microphone device of the first embodiment that Fig. 1 provides for the utility model;
The structural representation of the microphone device of the second embodiment that Fig. 2 provides for the utility model;
The structural representation of the microphone device of the 3rd embodiment that Fig. 3 provides for the utility model.
[embodiment]
Below in conjunction with accompanying drawing, the utility model is elaborated.
As shown in Figure 1, for the microphone device 100 of the first embodiment that the utility model provides, it comprises the housing 1 with cavity 10 and the sound absorber 3 being installed on the acoustical generator unit 2 on housing 1 and being arranged in cavity 10, sound absorber 3 comprises sound absorption powder 32 and by the sound absorption encapsulated layer 33 of powder 32 involution in sound absorber 3, encapsulated layer 33 offers some air-vents 330, and the aperture of air-vent 330 is 0.05 millimeter to 0.12 millimeter.The generation type of air-vent 330 can comprise encapsulated layer 33 and adopt spark machined, punch process, and high energy ion beam is processed, electron beam process, and ultrasonic wave is processed, the modes such as laser processing.In the present embodiment, sound absorber 3 comprises the shell 31 with receiving space 310, the powder 32 that absorbs sound is filled in receiving space 310, and encapsulated layer 33 will absorb sound powder 32 involution in receiving space 310.Encapsulated layer 33 is nonwoven fabrics, dust-proof screen cloth, filter paper, Du Pont's paper, leaching membrane paper, reticulate pattern paper and wire netting one wherein.
Encapsulated layer 33 can adopt hot melt pressing mode or laser welding mode or ultrasonic bonding mode to be combined in shell 31.Certainly, the mode that encapsulated layer 33 is combined in shell 31 does not limit to above-mentioned 3 kinds of modes, also can be beat glue, as long as or other can be bonding mode.
Be provided with the sound absorber 3 compensating air pressure in the cavity 10 of microphone device 100, reduce the resonance frequency of cavity 10, promote LF-response, play the effect being similar to enlarged cavities 10, improve low frequency performance.Encapsulated layer 33 arranges air-vent 330, and regulate Air permenbility, damping is less, and low frequency performance improves effective.
As shown in Figure 2, for the microphone device 200 of the second embodiment that the utility model provides, it comprises the housing 1 with cavity 10 and the sound absorber 4 being installed on the acoustical generator unit 2 on housing 1 and being arranged in cavity 10, sound absorber 4 comprises sound absorption powder 42 and by the sound absorption encapsulated layer 41 of powder 42 involution in sound absorber 4, encapsulated layer 41 offers some air-vents 411, and the aperture of air-vent 411 is 0.05 millimeter to 0.12 millimeter.The generation type of air-vent 411 can comprise encapsulated layer 41 and adopt spark machined, punch process, and high energy ion beam is processed, electron beam process, and ultrasonic wave is processed, the modes such as laser processing.In the present embodiment, sound absorber 4 is the accommodation bag 410 surrounded by encapsulated layer 41, and sound absorption powder 42 is filled in accommodation bag 410, and encapsulated layer 41 will absorb sound powder 42 involution in accommodation bag 410.Encapsulated layer 41 is nonwoven fabrics, dust-proof screen cloth, filter paper, Du Pont's paper, leaching membrane paper, reticulate pattern paper and wire netting one wherein.
Be provided with the sound absorber 4 compensating air pressure in the cavity 10 of microphone device 200, reduce the resonance frequency of cavity 10, promote LF-response, play the effect being similar to enlarged cavities 10, improve low frequency performance.Encapsulated layer 41 arranges air-vent 411, and regulate Air permenbility, damping is less, and low frequency performance improves effective.
As shown in Figure 3, for the microphone device 300 of the 3rd embodiment that the utility model provides, it comprises the housing 1 with cavity 10 and the acoustical generator unit 2 be installed on housing 1, microphone device 300 also comprises encapsulated layer 51 further, cavity 10 is divided into ante-chamber 11 and the back cavity 12 relative with ante-chamber 11 by encapsulated layer 51, acoustical generator unit 2 is arranged in ante-chamber 11, microphone device 300 also comprises the sound absorption powder 6 be filled in back cavity 12 further, encapsulated layer 51 will absorb sound powder 6 involution in back cavity 12, encapsulated layer 51 offers some air-vents 510, the aperture of air-vent 510 is 0.05 millimeter to 0.12 millimeter.The generation type of air-vent 510 can comprise encapsulated layer 51 and adopt spark machined, punch process, and high energy ion beam is processed, electron beam process, and ultrasonic wave is processed, the modes such as laser processing.Encapsulated layer 51 is nonwoven fabrics, dust-proof screen cloth, filter paper, Du Pont's paper, leaching membrane paper, reticulate pattern paper and wire netting one wherein.
Housing 1 is provided with the extension 1a extended in cavity 10, and encapsulated layer 51 is combined in extension 1a.Extension 1a be arranged so that encapsulated layer 51 is combined in housing 1 time location more accurately, convenient.
Encapsulated layer 51 can adopt hot melt pressing mode or laser welding mode or ultrasonic bonding mode to be combined in extension 1a.Certainly, the mode that encapsulated layer 51 is combined in extension 1a does not limit to above-mentioned 3 kinds of modes, also can be beat glue, as long as or other can be bonding mode.
Be provided with the sound absorption powder 6 compensating air pressure in the back cavity 12 of microphone device 300, reduce the resonance frequency of back cavity 12, promote LF-response, play the effect being similar to and expanding back cavity 12, improve low frequency performance.Encapsulated layer 51 arranges air-vent 510, and regulate Air permenbility, damping is less, and low frequency performance improves effective.
Above-described is only execution mode of the present utility model; it should be pointed out that for the person of ordinary skill of the art at this, under the prerequisite not departing from the utility model creation design; improvement can also be made, but these all belong to protection range of the present utility model.
Claims (7)
1. a microphone device, it comprises the housing with cavity and the acoustical generator unit be installed on described housing, it is characterized in that: described microphone device comprises the sound absorber be arranged in described cavity further, described sound absorber comprises sound absorption powder and by the encapsulated layer of described sound absorption powder involution in described sound absorber, described encapsulated layer offers some air-vents, and the aperture of described air-vent is 0.05 millimeter to 0.12 millimeter.
2. microphone device according to claim 1, is characterized in that: described sound absorber comprises the shell with receiving space, described sound absorption powder packed in described receiving space, described encapsulated layer by described sound absorption powder involution in described receiving space.
3. microphone device according to claim 1, is characterized in that: described sound absorber is the accommodation bag surrounded by described encapsulated layer, described sound absorption powder packed in described accommodation bag, described encapsulated layer by described sound absorption powder involution in described accommodation bag.
4., according to the arbitrary described microphone device of claim 1-3, it is characterized in that: described encapsulated layer is nonwoven fabrics, dust-proof screen cloth, filter paper, Du Pont's paper, leaching membrane paper, reticulate pattern paper and wire netting one wherein.
5. a microphone device, it comprises the housing with cavity and the acoustical generator unit be installed on described housing, it is characterized in that: described microphone device also comprises encapsulated layer further, described cavity is divided into ante-chamber and the back cavity relative with described ante-chamber by described encapsulated layer, described acoustical generator unit is arranged in described ante-chamber, described microphone device also comprises the sound absorption powder be filled in described back cavity further, described encapsulated layer by described sound absorption powder involution in described back cavity, described encapsulated layer offers some air-vents, the aperture of described air-vent is 0.05 millimeter to 0.12 millimeter.
6. microphone device according to claim 5, is characterized in that: described housing is provided with the extension extended in cavity, and described encapsulated layer is combined in described extension.
7. the microphone device according to claim 5 or 6, is characterized in that: described encapsulated layer is nonwoven fabrics, dust-proof screen cloth, filter paper, Du Pont's paper, leaching membrane paper, reticulate pattern paper and wire netting one wherein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520547495.XU CN204906679U (en) | 2015-07-24 | 2015-07-24 | Sounding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520547495.XU CN204906679U (en) | 2015-07-24 | 2015-07-24 | Sounding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204906679U true CN204906679U (en) | 2015-12-23 |
Family
ID=54928817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520547495.XU Expired - Fee Related CN204906679U (en) | 2015-07-24 | 2015-07-24 | Sounding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204906679U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3454569A1 (en) * | 2017-09-08 | 2019-03-13 | Guangdong OPPO Mobile Telecommunications Corp., Ltd. | Electroacoustic device and mobile terminal |
-
2015
- 2015-07-24 CN CN201520547495.XU patent/CN204906679U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3454569A1 (en) * | 2017-09-08 | 2019-03-13 | Guangdong OPPO Mobile Telecommunications Corp., Ltd. | Electroacoustic device and mobile terminal |
| US10440479B2 (en) | 2017-09-08 | 2019-10-08 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Electroacoustic device and mobile terminal |
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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: 20151223 Termination date: 20210724 |