CN201893922U - Electromagnetic loudspeaker - Google Patents
Electromagnetic loudspeaker Download PDFInfo
- Publication number
- CN201893922U CN201893922U CN2010206003640U CN201020600364U CN201893922U CN 201893922 U CN201893922 U CN 201893922U CN 2010206003640 U CN2010206003640 U CN 2010206003640U CN 201020600364 U CN201020600364 U CN 201020600364U CN 201893922 U CN201893922 U CN 201893922U
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- CN
- China
- Prior art keywords
- magnet steel
- magnetic speaker
- vibrating diaphragm
- magnetic
- leak holes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model provides an electromagnetic loudspeaker, which comprises a vibrating diaphragm, a magnetic circuit system and a frame. The vibrating diaphragm, the frame and the magnetic circuit system form a rear cavity; the frame is provided with a plurality of lateral walls; and the lateral walls are provided with leakage holes and lateral grooves, wherein the leakage holes penetrating through the lateral walls are communicated with the rear cavity, and the lateral grooves are recessed backwards from the peripheries of the corresponding lateral walls and communicated with the leakage holes. The electromagnetic loudspeaker has the advantage of capability of effectively decreasing distortion.
Description
Technical field
The utility model relates to a kind of loud speaker, relates in particular to a kind of magnetic speaker.
Background technology
Loud speaker be widely used in living and industry in the application of numerous electronic products, especially magnetic speaker more general.
See also Fig. 1 and Fig. 2, wherein Fig. 1 is a kind of STRUCTURE DECOMPOSITION schematic diagram of the magnetic speaker relevant with the utility model, and Fig. 2 is the structure assembling schematic diagram of magnetic speaker shown in Figure 1.This magnetic speaker 1 comprises loam cake 10, vibrating diaphragm 11, voice coil loudspeaker voice coil 12, pole piece 13, main magnet steel 14, secondary magnet steel 15, magnet frame 16 and basin frame 17.Wherein, this magnet frame 16 comprises base plate 161 and the baffle plate 162 of turnover upwards from its both sides.Vibrating diaphragm 11 is supported on the basin frame 17 when assembling, and produces vibration under the effect of voice coil loudspeaker voice coil 12.Be formed with a plurality of leak holes 163 on the base plate 161 of this magnet frame 16.The effect of leak holes 163 is to allow air leak when vibrating diaphragm 11 vibrations, and then reduces distortion.
The problem that above-mentioned magnetic speaker 1 exists is that leak holes 163 easy limited casing or pcb board when installation withstands, thereby stops up leak holes 163, thereby can't play the effect that reduces distortion effectively.
See also Fig. 3 and Fig. 4, wherein Fig. 3 is the STRUCTURE DECOMPOSITION schematic diagram of the another kind magnetic speaker relevant with the utility model, and Fig. 4 is the structure assembling schematic diagram of magnetic speaker shown in Figure 3.This magnetic speaker 2 comprises loam cake 20, vibrating diaphragm 21, voice coil loudspeaker voice coil 22, pole piece 23, main magnet steel 24, secondary magnet steel 25, magnet frame 26 and basin frame 27 equally.In this magnetic speaker 2, leak holes 263 is formed at four corners of magnet frame 26, can avoid thus when installation limited casing or pcb board withstand.
The problem that above-mentioned magnetic speaker 2 exists is the amplitude maximum position of leak holes 263 away from vibrating diaphragm 21, therefore can't play the best use of that reduces distortion effectively.
The utility model content
The leak holes that exists at existing magnetic speaker can't reduce the problem of distortion effectively, and the utility model provides a kind of leak holes can reduce the magnetic speaker of distortion effectively.
A kind of magnetic speaker comprises vibrating diaphragm, magnetic circuit system and basin frame, and vibrating diaphragm, basin frame and magnetic circuit system are formed back cavity.This basin has set up some sidewalls, this sidewall be provided with run through on it and the leak holes that communicates with this back cavity and from the periphery of sidewall to back cavity depression and the side groove that communicates with leak holes.
As the further improvement of this magnetic speaker, this leak holes is a rectangular indentation.
As the further improvement of this magnetic speaker, this magnetic speaker further comprises protecgulum, and this vibrating diaphragm and this protecgulum gummed and integral installation are fitted on this basin frame upper end.
As the further improvement of this magnetic speaker, this leak holes is near the amplitude maximum position of this vibrating diaphragm.
Further improvement as this magnetic speaker, this magnetic speaker further comprises main magnet steel and secondary magnet steel, this main magnet steel is positioned at the medium position of this magnet frame, this pair magnet steel is arranged on this main magnet steel both sides, this basin frame further comprises accepting groove, this pair magnet steel is housed in this accepting groove, and the free end of this accepting groove is formed with restrictions, and this restrictions butt should the pair magnet steel.
As the further improvement of this magnetic speaker, this pair magnet steel is a strip, and the two ends of this pair magnet steel comprise corner cut, and this corner cut is positioned at a side of contiguous this main magnet steel, this this corner cut of restrictions butt.
Because leak holes is arranged on the basin frame, and communicates with the side groove of basin frame sidewall, avoided when installation, stopping up leak holes, can make leak holes near the amplitude maximum position of vibrating diaphragm simultaneously, reduced distortion effectively.
Description of drawings
Fig. 1 is a kind of STRUCTURE DECOMPOSITION schematic diagram of the magnetic speaker relevant with the utility model.
Fig. 2 is the structure assembling schematic diagram of magnetic speaker shown in Figure 1.
Fig. 3 is the STRUCTURE DECOMPOSITION schematic diagram of the another kind magnetic speaker relevant with the utility model.
Fig. 4 is the structure assembling schematic diagram of magnetic speaker shown in Figure 3.
Fig. 5 is the STRUCTURE DECOMPOSITION schematic diagram of the utility model magnetic speaker one better embodiment.
Fig. 6 is the part-structure assembling schematic diagram of magnetic speaker shown in Figure 5.
Fig. 7 is the structure assembling schematic diagram of the opposite side of magnetic speaker shown in Figure 5.
Fig. 8 is the part cross-sectional schematic of magnetic speaker shown in Figure 5.
Embodiment
Below in conjunction with accompanying drawing the utility model is elaborated.
See also Fig. 5 to Fig. 7, wherein Fig. 5 is the STRUCTURE DECOMPOSITION schematic diagram of the utility model magnetic speaker one better embodiment, Fig. 6 is the part-structure assembling schematic diagram of magnetic speaker shown in Figure 5, and Fig. 7 is the structure assembling schematic diagram of the opposite side of magnetic speaker shown in Figure 5.
This magnetic speaker 3 comprises loam cake 30, vibrating diaphragm 31, voice coil loudspeaker voice coil 32, pole piece 33, main magnet steel 34, secondary magnet steel 35, magnet frame 36 and basin frame 37.
This magnet frame 36 comprises a base plate 360 and two baffle plates 362, and this base plate 360 is a slab construction, and this two baffle plate 362 extends upward from the relative both sides of the edge of this base plate 360 respectively.
This basin frame 37 is made by plastics, and it comprises a plurality of sidewalls 371.Frame is accommodated thereby this magnet frame 36 cooperates with this basin frame 37 to form in the inboard of baffle plate 362 these basin framves 37 of elasticity butt of this magnet frame 36, and this base plate 360 can play a supportive role.
This main magnet steel 34 is arranged on the centre position of this base plate 360, and it is a rectangular configuration.The permanent magnet that this main magnet steel 34 is normally got by the higher metallic of multiple hardness, for example by iron, aluminium, nickel and cobalt etc., perhaps copper, niobium and tantalum etc. make, and according to the difference of composition, corresponding magnetic property is difference to some extent also.
This pole piece 33 is arranged on the upper surface of this main magnet steel 34, and it mainly plays the magnetic conduction effect.That is to say that this main magnet steel 34 is clipped between this base plate 360 and this pole piece 33.This magnet frame 36, main magnet steel 34, this pair magnet steel 35 and this pole piece 33 form the magnetic circuit system (not indicating) of this magnetic speaker 3.This vibrating diaphragm 31, this basin frame 37 and this magnetic circuit system form the back cavity (not indicating) of this magnetic speaker 3.
This voice coil loudspeaker voice coil 32 is provided with around this main magnet steel 34, and it mainly acts on is can correspondingly produce magnetic field after energising.This voice coil loudspeaker voice coil 32 can for example be formed by the copper conductor coiling by the multi turn coil arrangement of plain conductor coiling.
This vibrating diaphragm 31 is a hollow annular structure, and it can specifically be supported on the sidewall 371 of this basin frame 37.
Seeing also Fig. 8, is the part cross-sectional schematic of this magnetic speaker 3.The upper end of the sidewall 371 of this basin frame 37 is provided with a plurality of leak holes 373 that run through on it, and this leak holes 373 communicates with this back cavity respectively.Periphery at this sidewall 371 also is provided with side groove 375, and this side groove 375 communicates to the back cavity depression and with this leak holes 373 from the periphery of this sidewall 371.In the present embodiment, leak holes 373 is a rectangular indentation, and is formed at the upper end of close vibrating diaphragm 31 1 sides of sidewall 371.Certainly, according to performance requirement, leak holes 373 can be opened in any appropriate location of basin frame 37.After these magnetic speaker 3 assemblings, leak holes 373 promptly is positioned at vibrating diaphragm 31 belows.
Because leak holes 373 is arranged at sidewall 371 upper ends, and communicates with side groove 375, limited casing or pcb board withstands when having avoided installation.In addition, because leak holes 373 can be arranged to the amplitude maximum position near vibrating diaphragm 31 as required, therefore when vibrating diaphragm 31 produced vibration, air can be revealed through leak holes 373 effectively, has reduced distortion effectively.
In a preferred embodiment, this vibrating diaphragm 31 further with the protecgulum of magnetic speaker 3 (figure does not show) gummed, integral installation is fitted on sidewall 371 upper ends again.Because vibrating diaphragm 31 by the protecgulum proof strength, guarantees its intensity and needn't depend on sidewall 371, has therefore created advantage for offering leak holes 373 at basin frame 37.
In addition, this two secondary magnet steel 35 lays respectively at the relative both sides of this main magnet steel 34, and is positioned at the periphery of this voice coil loudspeaker voice coil 32.This pair magnet steel 35 roughly is trapezoidal, can be understood as the main part that this pair magnet steel 35 comprises strip (indicating) and be positioned at the triangular portions (sign) at main body two ends, perhaps can be understood as this pair magnet steel 35 for having the strip structure of two corner cuts, wherein this corner cut is positioned at a side of contiguous this main magnet steel 34.The lower surface of these two secondary magnet steel 35 and this base plate 360 are bonding.
This basin frame 37 further comprises two accepting grooves 374, this accepting groove 374 is corresponding with the shape of this pair magnet steel 35, and the free end of this accepting groove 374 (not indicating) is formed with the restrictions 374 towards these main magnet steel 34 center position diagonally extendings respectively, this restrictions 374 have at least part this main magnet steel 34 and should pair magnet steel 35 between, and butt should pair magnet steel 35.That is to say that this pair magnet steel 35 can be housed in this accepting groove 374, and this restrictions 374 is positioned at the place ahead of these pair magnet steel 35 movable directions, and the corner cut that butt should pair magnet steel 35, move to these main magnet steel 34 directions thereby can limit this pair magnet steel 35.From another point of view, if be projecting direction with both center line connecting directions of this main magnet steel 34 and this pair magnet steel 35, this restrictions 374 and this pair magnet steel 35 have at least on this projecting direction and partially overlap.
When the vibration of this magnetic speaker 3 sounding, clashed into or accident when dropping, under magneticaction mutual between instant impact and the magnet steel, even bonding glue that should pair magnet steel 35 lost efficacy, this restrictions 374 also can prop up this pair magnet steel 35, avoiding this pair magnet steel 35 to move and be attracted over, thereby improved the product reliability of this magnetic speaker 3 to these main magnet steel 34 directions.
Only be preferred case study on implementation of the present utility model below, be not limited to the utility model, for a person skilled in the art, the utility model can have various changes and variation.All within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection range of the present utility model.
Claims (6)
1. magnetic speaker, comprise vibrating diaphragm, magnetic circuit system and basin frame, basin has set up some sidewalls, this basin frame, vibrating diaphragm and magnetic circuit system are formed back cavity, it is characterized in that: this sidewall is provided with and runs through it on and leak holes that communicates with this back cavity and the side groove that caves in and communicate with leak holes to back cavity from the periphery of sidewall.
2. magnetic speaker according to claim 1 is characterized in that: this leak holes is a rectangular indentation.
3. magnetic speaker according to claim 2 is characterized in that: this magnetic speaker further comprises protecgulum, and this vibrating diaphragm and this protecgulum gummed and integral installation are fitted on this basin frame upper end.
4. magnetic speaker according to claim 3 is characterized in that: this leak holes is near the amplitude maximum position of this vibrating diaphragm.
5. magnetic speaker according to claim 1, it is characterized in that: this magnetic speaker further comprises main magnet steel and secondary magnet steel, this main magnet steel is positioned at the medium position of this magnet frame, this pair magnet steel is arranged on this main magnet steel both sides, this basin frame further comprises accepting groove, this pair magnet steel is housed in this accepting groove, and the free end of this accepting groove is formed with restrictions, and this restrictions butt should the pair magnet steel.
6. magnetic speaker according to claim 5 is characterized in that: this pair magnet steel is a strip, and the two ends of this pair magnet steel comprise corner cut, and this corner cut is positioned at a side of contiguous this main magnet steel, this this corner cut of restrictions butt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206003640U CN201893922U (en) | 2010-11-10 | 2010-11-10 | Electromagnetic loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206003640U CN201893922U (en) | 2010-11-10 | 2010-11-10 | Electromagnetic loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201893922U true CN201893922U (en) | 2011-07-06 |
Family
ID=44223394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206003640U Expired - Lifetime CN201893922U (en) | 2010-11-10 | 2010-11-10 | Electromagnetic loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201893922U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103024649A (en) * | 2012-12-10 | 2013-04-03 | 瑞声声学科技(深圳)有限公司 | Sound production device |
| CN103024648A (en) * | 2012-12-10 | 2013-04-03 | 瑞声声学科技(深圳)有限公司 | Sound production device |
| CN103260113A (en) * | 2013-05-03 | 2013-08-21 | 歌尔声学股份有限公司 | Sounding component |
| CN106973348A (en) * | 2017-04-24 | 2017-07-21 | 歌尔股份有限公司 | Loudspeaker module and electronic equipment |
| CN112333611A (en) * | 2020-11-30 | 2021-02-05 | 歌尔股份有限公司 | Sound monomer |
-
2010
- 2010-11-10 CN CN2010206003640U patent/CN201893922U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103024649A (en) * | 2012-12-10 | 2013-04-03 | 瑞声声学科技(深圳)有限公司 | Sound production device |
| CN103024648A (en) * | 2012-12-10 | 2013-04-03 | 瑞声声学科技(深圳)有限公司 | Sound production device |
| CN103024649B (en) * | 2012-12-10 | 2015-03-18 | 瑞声声学科技(深圳)有限公司 | Sound production device |
| CN103024648B (en) * | 2012-12-10 | 2015-06-24 | 瑞声声学科技(深圳)有限公司 | Sound production device |
| CN103260113A (en) * | 2013-05-03 | 2013-08-21 | 歌尔声学股份有限公司 | Sounding component |
| CN103260113B (en) * | 2013-05-03 | 2016-12-28 | 歌尔股份有限公司 | Microphone device |
| CN106973348A (en) * | 2017-04-24 | 2017-07-21 | 歌尔股份有限公司 | Loudspeaker module and electronic equipment |
| WO2018196132A1 (en) * | 2017-04-24 | 2018-11-01 | 歌尔股份有限公司 | Loudspeaker module and electronic device |
| CN112333611A (en) * | 2020-11-30 | 2021-02-05 | 歌尔股份有限公司 | Sound monomer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170417 Address after: Singapore Ang Mo Kio 65 Street No. 10 techpoint Building 1 floor, No. 8 Co-patentee after: AAC Optoelectronic (Changzhou) Co., Ltd. Patentee after: AAC Technologies (Singapore) Co., Ltd. Address before: Wujin Nanxiashu town Jiangsu city Changzhou province 213167 Co-patentee before: AAC Acoustic Technologies (Shenzhen) Co., Ltd. Patentee before: AAC Optoelectronic (Changzhou) Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20181019 Address after: No. 8, 2 floor, 85 Cavendish Science Park Avenue, Singapore Patentee after: AAC Technologies (Singapore) Co., Ltd. Address before: Singapore Ang Mo Kio 65 Street No. 10 techpoint Building 1 floor, No. 8 Co-patentee before: AAC Optoelectronic (Changzhou) Co., Ltd. Patentee before: AAC Technologies (Singapore) Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110706 |
|
| CX01 | Expiry of patent term |