CN201238374Y - Novel miniature sounding device - Google Patents
Novel miniature sounding device Download PDFInfo
- Publication number
- CN201238374Y CN201238374Y CNU2008200953036U CN200820095303U CN201238374Y CN 201238374 Y CN201238374 Y CN 201238374Y CN U2008200953036 U CNU2008200953036 U CN U2008200953036U CN 200820095303 U CN200820095303 U CN 200820095303U CN 201238374 Y CN201238374 Y CN 201238374Y
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- China
- Prior art keywords
- sound
- loam cake
- magnetic circuit
- utility
- product
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- Expired - Lifetime
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Abstract
The utility model provides a novel micro sounder, which comprises a vibrating system, a magnetic circuit system, a vibration accepting system and an outer casing of the magnetic circuit system. A sound hole for sound to be input or output is arranged on the outer casing, and a strengthening part bulging outside of the novel micro sounder is arranged on the circumferential wall of the sound hole. The strengthening part can effectively strengthen the intensity of an upper cover, prevent the upper cover from being distorted or the product from generating abnormal sound during the sounding, and enhance the product reliability and the production yield.
Description
Technical field
The utility model relates to a kind of mini-sound device, especially a kind of moving-coil type mini-sound device.
Background technology
Mini-sound device is widely used in portable electronic equipments such as mobile phone, notebook computer.Along with fast development, the people of these portable electronic equipments are more and more stronger to its functional requirement, the also corresponding development apace of the mini-sound device that is applied thereon.
The structure of relevant mini-sound device 10 as shown in Figure 5, mainly comprise basin frame 11, join and be provided with basin frame 11 hole 160 loam cake 16, be contained in the magnetic bowl 12 in the basin frame 11, basin frame 11 forms a cavity volume with loam cake 16 and magnetic bowl 12.Be provided with the vibrating diaphragm 15 of loam cake adjacency in this cavity volume, be placed in the magnetic bowl 12 and form the permanent magnet 13 of magnetic gap 18, link to each other and be placed in the interior voice coil loudspeaker voice coil 14 of described magnetic gap 18 with vibrating diaphragm 15 with magnetic bowl 12.Two ends at basin frame 11 also are provided with sheet metal 17, and voice coil loudspeaker voice coil 14 is realized being electrically connected by sheet metal 17, when feeding the alternation tone currents on sheet metal 17, voice coil loudspeaker voice coil 14 is subjected to the motive force of alternation in magnetic gap 18, produce alternate motion, thereby drive vibrating diaphragm 15 vibrations, sound.
Yet in existing manufacturing technique, the loam cake of the relevant mini-sound device that obtains is all softer, easy deformation, thus can cause when the product sounding, producing different sound, influence the performance of product, make its unstable properties.
In addition, when above-mentioned existing relevant mini-sound device is applied on the carriers such as mobile phone, in order to make the ante-chamber and the carrier that form between loam cake and the vibrating diaphragm isolated, be that air does not circulate mutually, need on mini-sound device, cover and attach one deck packing ring, but because this loam cake is made generally in flat shape, packing ring is difficult for the location, paste easily askew, thereby cause producing bad phenomenon such as obstruction sound hole.
The utility model content
The technical problem that the utility model need solve is to overcome above-mentioned deficiency, and the new micro ballistic device that a kind of acoustical behavior is stable, rate of finished products is high is provided.
According to the above-mentioned technical problem that needs solution, designed a kind of new micro microphone device, its involving vibrations system, magnetic circuit system, accommodate the shell of vibrational system and magnetic circuit system, shell is provided with the sound hole of coming in and going out for sound, is provided with the rib that protrudes on the perisporium in described sound hole outside described new micro microphone device.
Further improve as the utility model, described shell is made up of basin frame and loam cake, and described rib is located at and covers.
Compared with prior art, the utility model has following some advantage at the last rib that is provided with that covers:
(1), rib can effectively strengthen the intensity of loam cake, prevents the loam cake distortion and produce different sound when the product sounding, improves the product reliability and the rate that manufactures a finished product;
(2), be applied to carrier, need to cover when attaching packing ring last, rib is space washer well, avoids bad phenomenon such as packing ring is crooked effectively at product;
(3), rib has certain height, in the time of can guaranteeing that bigger amplitude motion takes place vibrating diaphragm, can not run into the carrier wall; And, thereby make the acoustic characteristic of product better for the ante-chamber that forms between loam cake and the vibrating diaphragm has kept certain space.
Description of drawings
Fig. 1 is the schematic perspective view of the new micro microphone device of the utility model execution mode;
Fig. 2 is the cutaway view of A-A direction among Fig. 1;
Fig. 3 is the schematic perspective view of the new micro microphone device loam cake of the utility model execution mode;
Fig. 4 is a kind of user mode figure of the new micro microphone device of the utility model execution mode;
Fig. 5 is the cross-sectional schematic of relevant mini-sound device.
Embodiment
The utility model is described in further detail below in conjunction with drawings and embodiments.
As depicted in figs. 1 and 2, a kind of new micro microphone device 20 of the utility model, holds the shell of vibrational system and magnetic circuit system at involving vibrations system, magnetic circuit system.Vibrational system comprises vibrating diaphragm 25, voice coil loudspeaker voice coil 24.Magnetic circuit system comprises magnetic bowl 22, permanent magnet 23.Shell is made up of basin frame 21 and loam cake 26.
More than the assembly relation of each element as follows: loam cake 26 links to each other with basin frame 21, and magnetic bowl 22 is contained in the basin frame 21, and loam cake 26 and magnetic bowl 22 form a cavity volume with basin frame 21.Accommodate with the vibrating diaphragm 25 of loam cake 26 adjacency in this cavity volume, be placed in and become the permanent magnet 23 of magnetic gap 28, link to each other and be placed in the interior voice coil loudspeaker voice coil 24 of magnetic gap 28 in the magnetic bowl 22 and with the magnetic bowl-type with vibrating diaphragm 25.Two ends at basin frame 21 also are provided with conducting terminal 27, to be embodied as voice coil loudspeaker voice coil 24 input audio electrical signals.
As shown in Figure 3, loam cake 26 is provided with hole 260, comes in and goes out for the sound that vibrating diaphragm 25 produces in sound hole 260.This hole 260 can be the big hole of a diameter size.The sound hole 260 of big hole shape can be vibrating diaphragm 25 gets out of the way the space, thereby vibrating diaphragm 25 can not run into the inwall of loam cake 26 when vibration; During deisgn product, also the distance between loam cake 26 and the vibrating diaphragm 25 can be dwindled, make the thickness of product thinner.
Perisporium in sound hole 260 is provided with rib 261, and it protrudes outside the cavity volume, promptly outside the mini-sound device 20.This rib 260 can effectively be strengthened the intensity of loam cake 26, prevents loam cake 26 distortion and produce different sound when the product sounding, improves the product reliability and the rate that manufactures a finished product.
As shown in Figure 4, when being applied on the carrier 30 as one kind such as some mobile phones at the utility model, in order to make the ante-chamber 200 that forms between loam cake 26 and the vibrating diaphragm 25 isolated with carrier 30 as one kind, promptly air does not circulate mutually.Usually, manufacturer needs to attach one deck packing ring 40 on loam cake 26, because the rib 261 that the utility model is provided with has certain height, space washer 40 is well then avoided bad phenomenon such as packing ring is crooked effectively.And, in the time of can also guaranteeing that bigger amplitude motion takes place vibrating diaphragm, do not run into the carrier wall; And, thereby make the acoustic characteristic of product better for ante-chamber has kept certain space.
Above-described only is execution mode of the present 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 invention design, can also make improvement, but these all belongs to protection range of the present utility model.
Claims (2)
1, a kind of new micro microphone device, involving vibrations system, magnetic circuit system, accommodate the shell of vibrational system and magnetic circuit system, shell is provided with the sound hole of coming in and going out for sound, it is characterized in that: be provided with the rib that protrudes on the perisporium in described sound hole outside described new micro microphone device.
2, new micro microphone device according to claim 1, it is characterized in that: described shell is made up of basin frame and loam cake, and described rib is located at and covers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200953036U CN201238374Y (en) | 2008-07-04 | 2008-07-04 | Novel miniature sounding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200953036U CN201238374Y (en) | 2008-07-04 | 2008-07-04 | Novel miniature sounding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201238374Y true CN201238374Y (en) | 2009-05-13 |
Family
ID=40651106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200953036U Expired - Lifetime CN201238374Y (en) | 2008-07-04 | 2008-07-04 | Novel miniature sounding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201238374Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101984676A (en) * | 2010-11-10 | 2011-03-09 | 瑞声声学科技(深圳)有限公司 | Sound production device and manufacturing method thereof |
| WO2016155327A1 (en) * | 2015-03-31 | 2016-10-06 | 歌尔声学股份有限公司 | Sounder module |
-
2008
- 2008-07-04 CN CNU2008200953036U patent/CN201238374Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101984676A (en) * | 2010-11-10 | 2011-03-09 | 瑞声声学科技(深圳)有限公司 | Sound production device and manufacturing method thereof |
| WO2016155327A1 (en) * | 2015-03-31 | 2016-10-06 | 歌尔声学股份有限公司 | Sounder module |
| US9955251B1 (en) | 2015-03-31 | 2018-04-24 | Goertek Inc. | Sounder module |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090513 |