CN202231856U

CN202231856U - Sounder

Info

Publication number: CN202231856U
Application number: CN2011203207119U
Authority: CN
Inventors: 查宇斌; 张�雄
Original assignee: AAC Acoustic Technologies Shenzhen Co Ltd; AAC Acoustic Technologies Changzhou Co Ltd
Current assignee: AAC Technologies Holdings Shenzhen Co Ltd; AAC Technologies Holdings Changzhou Co Ltd
Priority date: 2011-08-30
Filing date: 2011-08-30
Publication date: 2012-05-23
Anticipated expiration: 2021-08-30

Abstract

The utility model provides a sounder, comprising an upper cover, a lower cover together with the upper cover to form a sounding cavity, a sounding unit arranged in the sounding cavity. The sounding unit is provided with a basket, the sounding cavity is divided into a front cavity and a back cavity opposite to the front cavity by the basket and the front cavity comprises a sound out cavity and a sound out channel. The back cavity is formed by commonly circling the basket and the lower cover. A sound outlet communicated with the outside is arranged on the sound out channel. A separation wall is arranged in the sound out channel and the upper cavity is formed by commonly circling the separation wall and the upper cover and respectively communicated with the front cavity and the outside. A lower cavity is formed by commonly circling the separation wall and the lower cover and communicated with the back cavity. Compared with the related art, the sounder has features of low resonant frequency, wide frequency band and better acoustic performance.

Description

Microphone device

[technical field]

The utility model relates to a kind of microphone device, relates in particular to a kind of microphone device that is used in the portable communications product.

[background technology]

In the fast-developing process of portable equipments such as mobile phone, people are more and more stronger to the functional requirement of product, for this function of Music Appreciation of mobile phone; In order to make entertainment effect stronger; The pattern that the music belt vibration occurred, thus, the also corresponding quickening of the development of microphone device.

The microphone device of correlation technique; It comprises loam cake, surrounds the lower cover of sounding cavity jointly with said loam cake and places the sounding monomer in the said sounding cavity; Said sounding monomer comprises the basin frame; Said basin frame is separated into ante-chamber and the back cavity relative with said ante-chamber with said sounding cavity, and said ante-chamber comprises and the extraneous passage of speaking that communicates that the said passage of speaking extends to said lower cover from said loam cake.

Yet; The said loam cake of the microphone device of the correlation technique positive reason of its passage of speaking extends to said lower cover; Taken said sounding cavity overwhelming majority space, that is to say that the channel volume of speaking is big more, preceding cavity volume is also just big more; And said sounding cavity volume is certain, and then said back cavity volume is just more little.The too big structure that then cavity volume is too little of cavity volume made that its resonance frequency of said microphone device is too high before the microphone device of correlation technique was this, and frequency band is too narrow.And then influence the acoustical behavior of correlation technique microphone device.

Therefore, being necessary to propose a kind of new microphone device in fact addresses the above problem.

[utility model content]

It is low that the technical problem that the utility model need solve provides a kind of resonance frequency, the microphone device of bandwidth.

According to above-mentioned technical problem, designed a kind of microphone device, its objective is such realization:

A kind of microphone device, it comprises loam cake, surrounds the lower cover of sounding cavity jointly with said loam cake and places the sounding monomer in the said sounding cavity.Said sounding monomer is separated into ante-chamber and relative back cavity with said ante-chamber with said sounding cavity; Said ante-chamber comprises that said sounding monomer and said loam cake surround jointly goes out the operatic tunes and goes out the passage of speaking that the operatic tunes communicates with said; The said passage of speaking extends to said lower cover from said loam cake, and said sounding monomer and said lower cover surround said back cavity jointly.Said sounding monomer is provided with the basin frame, and the said passage of speaking is provided with and the extraneous outlet sound mouth that communicates.Wherein, also be provided with the partition wall that extends to said lower cover to said basin frame bending in the said passage of speaking, the cavity of resorption that said partition wall is separated into the said passage of speaking epicoele and does not communicate with said epicoele.Said partition wall and said loam cake surround said epicoele jointly, and said partition wall and said lower cover surround cavity of resorption jointly, and said epicoele goes out the operatic tunes and the external world communicates with said respectively, and said cavity of resorption communicates with said back cavity.

Preferably; Said partition wall comprise by said basin frame to said lower cover direction bend extended first partition wall, by said first partition wall along being parallel to second partition wall that said lower cover direction bending extends and the 3rd partition wall that extends to said lower cover direction bending by said second partition wall; Said second partition wall and said lower cover are separated by a distance, and said the 3rd partition wall links to each other with said lower cover.

Compare with correlation technique, its resonance frequency of the microphone device of the utility model is low, bandwidth, and acoustical behavior is more excellent.

[description of drawings]

Fig. 1 is the three-dimensional structure diagram of the utility model microphone device.

Fig. 2 is the part-structure exploded view of the utility model microphone device.

Fig. 3 is that Fig. 1 is along A-A line cut-away view.

[embodiment]

Below in conjunction with accompanying drawing and execution mode the utility model is described further.

A kind of microphone device 1, it comprises loam cake 2, surrounds the lower cover 3 of sounding cavity 4 jointly with loam cake 2 and places the sounding monomer 5 in the sounding cavity 4.Sounding monomer 5 is separated into ante-chamber 41 and the back cavity 42 relative with ante-chamber 41 with sounding cavity 4; Ante-chamber 41 comprises that sounding monomer 5 and loam cake 2 surround jointly go out the operatic tunes 411 and with go out the passage 412 of speaking that the operatic tunes 411 communicates, the passage 412 of speaking extends to lower cover 3 from loam cake 2.Sounding monomer 5 surrounds back cavity 42 jointly with lower cover 3.Sounding monomer 5 is provided with basin frame 51, and the passage 412 of speaking is provided with and the extraneous outlet sound mouth 43 that communicates.Wherein, Speak and also be provided with the partition wall 6 that extends to lower cover 3 by 51 bendings of basin frame in the passage 412; Partition wall 6 cavity of resorption 4122 that passage 412 is separated into epicoele 4121 and does not communicate with epicoele 4121 of will speaking, partition wall 6 surrounds epicoele 4121 jointly with loam cake 2, and partition wall 6 surrounds cavity of resorption 4122 jointly with lower cover 3; Epicoele 4121 communicates with the external world with going out the operatic tunes 411 respectively, and cavity of resorption 4122 communicates with back cavity 42.In this execution mode, epicoele 4121 communicates with extraneous through outlet sound mouth 43, and the sound that sounding monomer 5 sends reaches epicoele 4121 by going out the operatic tunes 411, passes to the external world through outlet sound mouth 43 again.

In fact; The structure of the utility model microphone device 1 passage 412 that is equivalent on the basis of present technology, will speak reconfigures; The one of which segment space is that the epicoele 4121 in the utility model uses as the passage 412 of speaking of original structure; Another part space is the part that cavity of resorption 4122 parts in the utility model then become back cavity 42 in the utility model, promptly realizes above-mentioned configuration through setting up partition wall 7.After reasonable configuration epicoele 4121 sizes, promptly reduced the volume of ante-chamber 41, increased the volume of back cavity 42.Also promptly optimize the ante-chamber 41 of whole microphone device 1 and the volume ratio of back cavity 42, and then can reduce the resonance frequency of microphone device 1, widened its frequency band.

In this execution mode; More excellent; Partition wall 6 comprise by basin frame 51 to lower cover 3 directions bend extended first partition wall 61, by first partition wall 61 along being parallel to second partition wall 62 that the bending of lower cover 3 directions extends and the 3rd partition wall 63 that extends to the bending of lower cover 3 directions by second partition wall 62; Second partition wall 62 is separated by a distance with lower cover 3, and the 3rd partition wall 63 links to each other with lower cover 3.Certainly, the structure of partition wall 6 also is not limited to this, only need to be provided with according to the structure of product, but its principle is the same.

Compare with correlation technique; The microphone device of the utility model is separated into two parts with its channel space of speaking on the product of original technology; A part still is used as the function of the passage of speaking, and another part space that is separated out then communicates with back cavity, and the passage that has been equivalent to reduce speak is the volume of ante-chamber; Increase the volume of back cavity, also promptly on technological now basis, changed the volume ratio of front/back cavity.This structure makes the microphone device resonance frequency of the utility model reduce, and frequency band is widened, and then makes that its acoustical behavior of microphone device of the utility model is more excellent.

Above-described only is the execution mode of the utility model; Should be pointed out that for the person of ordinary skill of the art at this, under the prerequisite that does not break away from the utility model creation design; Can also make improvement, but these all belong to the protection range of the utility model.

Claims

1. microphone device; It comprises loam cake, surrounds the lower cover of sounding cavity jointly with said loam cake and places the sounding monomer in the said sounding cavity; Said sounding monomer is separated into ante-chamber and relative back cavity with said ante-chamber with said sounding cavity; Said ante-chamber comprises that said sounding monomer and said loam cake surround jointly goes out the operatic tunes and goes out the passage of speaking that the operatic tunes communicates with said, and the said passage of speaking extends to said lower cover from said loam cake, and said sounding monomer and said lower cover surround said back cavity jointly; Said sounding monomer is provided with the basin frame; The said passage of speaking is provided with and the extraneous outlet sound mouth that communicates, and it is characterized in that: also be provided with the partition wall that extends to said lower cover to said basin frame bending in the said passage of speaking, the cavity of resorption that said partition wall is separated into the said passage of speaking epicoele and does not communicate with said epicoele; Said partition wall and said loam cake surround said epicoele jointly; Said partition wall and said lower cover surround cavity of resorption jointly, and said epicoele goes out the operatic tunes and the external world communicates with said respectively, and said cavity of resorption communicates with said back cavity.

2. microphone device according to claim 1; It is characterized in that: said partition wall comprise by said basin frame to said lower cover direction bend extended first partition wall, by said first partition wall along being parallel to second partition wall that said lower cover direction bending extends and the 3rd partition wall that extends to said lower cover direction bending by said second partition wall; Said second partition wall and said lower cover are separated by a distance, and said the 3rd partition wall links to each other with said lower cover.