CN104053102A - Loudspeaker module - Google Patents

Loudspeaker module Download PDF

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Publication number
CN104053102A
CN104053102A CN201410307252.9A CN201410307252A CN104053102A CN 104053102 A CN104053102 A CN 104053102A CN 201410307252 A CN201410307252 A CN 201410307252A CN 104053102 A CN104053102 A CN 104053102A
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China
Prior art keywords
operatic tunes
rear operatic
acoustical cotton
voice coil
loud speaker
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Granted
Application number
CN201410307252.9A
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Chinese (zh)
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CN104053102B (en
Inventor
汲鹏程
徐同雁
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Goertek Inc
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Goertek Inc
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Abstract

The invention discloses a loudspeaker module and relates to the technical field of electroacoustic products. The loudspeaker module comprises a shell. A single loudspeaker body is contained in the shell. The single loudspeaker body comprises a vibrating system and a magnetic circuit system. The single loudspeaker body divides the whole inner cavity of the module into a front acoustic cavity and a rear acoustic cavity, a piece of sound absorption cotton is arranged in the rear acoustic cavity, the shape of the sound absorption cotton is matched with that of the rear acoustic cavity, the sound absorption cotton is made of melamine, and the sound absorption cotton is processed and formed through the hot-pressing technology. The loudspeaker module is high in acoustic performance, good in uniformity, low in cost and high in production efficiency.

Description

Loud speaker module
Technical field
The present invention relates to electro-acoustic product technical field, particularly a kind of loud speaker module.
Background technology
Loud speaker module is the important acoustic element of portable electric appts, for completing the conversion between the signal of telecommunication and voice signal, is a kind of energy conversion device.Existing loud speaker module generally includes shell, contains vibrational system and magnetic circuit system in shell.Vibrational system comprises vibrating diaphragm and the voice coil loudspeaker voice coil being fixed together, and magnetic circuit system comprises basin frame and be fixed on successively magnet and the washer on basin frame, and vibrating diaphragm is separated into the front operatic tunes and two cavitys of the rear operatic tunes by whole module inner chamber.In order to reduce the F0 (low frequency) of module, spread bandwidth, technical staff can set up acoustical cotton conventionally in the rear operatic tunes, and acoustical cotton can effectively reduce the F0 of module, and makes intermediate frequency curve more level and smooth.
Existing acoustical cotton thickness is fixed, yet the rear operatic tunes shape of some module is also irregular, want the fixing acoustical cotton of thickness to be filled in the rear operatic tunes of this height fluctuating, the mode that can only adopt polylith acoustical cotton to paste to piece together guarantee acoustical cotton and the rear operatic tunes suitable, but this mode makes the laminating degree between acoustical cotton and housing, and the compression ratio of acoustical cotton etc. is all difficult to control, cause the consistency of module poor; And this mode can only be by manually pasting, and workman's labour intensity is large, and operation easier is high, causes cost of labor high, thereby cause production cost high, production efficiency is low.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of loud speaker module, this loud speaker module high conformity, and cost is low, and production efficiency is high.
For solving the problems of the technologies described above, technical scheme of the present invention is:
A kind of loud speaker module, comprise shell, in described shell, contain loudspeaker monomer, described loudspeaker monomer involving vibrations system and magnetic circuit system, described loudspeaker monomer is divided into the front operatic tunes and two cavitys of the rear operatic tunes by whole module inner chamber, in the described rear operatic tunes, is provided with acoustical cotton, and the shape of described acoustical cotton and the described rear operatic tunes are suitable, the material of described acoustical cotton is melamine, and described acoustical cotton is processed by heat pressing process.
Wherein, the described module inner chamber that is positioned at the adjacent both sides of described loudspeaker monomer sidepiece in described module inner chamber is the described rear operatic tunes, the spatial altitude of described rear operatic tunes part that is positioned at described loudspeaker monomer one side is larger, and the spatial altitude of described rear operatic tunes part that is positioned at described loudspeaker monomer opposite side is less.
Wherein, the described rear operatic tunes that spatial altitude is larger is partly coffin, and a side of described coffin is plane, and opposite side intermediate altitude is large, and two ends height is little; The described rear operatic tunes part that spatial altitude is less is also coffin, and described in this, one end height of coffin is large, and other end height is little.
Wherein, in the described rear operatic tunes, horizontally there are two described acoustical cottons, the described rear operatic tunes part that the shape of a described acoustical cotton wherein and spatial altitude are larger is suitable, and the described rear operatic tunes part that the shape of acoustical cotton and spatial altitude are less described in another piece is suitable.
Wherein, described shell comprises the first housing, the second housing and the 3rd housing combining successively, and described loudspeaker monomer, described the second housing and described the 3rd housing surround the described rear operatic tunes jointly.
Wherein, described magnetic circuit system comprises the basin frame being fixed on described the second housing, and the center of described basin frame is provided with internal magnet and interior washer successively, and the marginal position of described basin frame is provided with external magnet and outer washer successively; The described basin frame that is positioned at described external magnet inner side is provided with for preventing described external magnet and described outer washer mobile spacing block set to the inside.
Wherein, described external magnet and described outer washer are arranged on the marginal position on the long limit, both sides of described basin frame.
Wherein, the outside of two described outer washers is equipped with and lacks the location division that material forms, and two described location divisions all engage with described the second housing.
Wherein, described vibrational system comprises vibrating diaphragm and the voice coil loudspeaker voice coil combining, and described voice coil loudspeaker voice coil is many away from one end number of turns of described vibrating diaphragm, and thickness is large.
Wherein, described module also comprises for being electrically connected to the electric connection structure of described voice coil loudspeaker voice coil and module external circuit, described electric connection structure comprises the FPCB that is electrically connected and is connected shell fragment, and described FPCB is electrically connected to described voice coil loudspeaker voice coil, and described connection shell fragment is electrically connected to described module external circuit.
Adopted after technique scheme, the invention has the beneficial effects as follows:
Because the operatic tunes after the acoustical cotton in loud speaker module of the present invention and module is suitable, the material of acoustical cotton is melamine, and processes by heat pressing process.Heat pressing process is that the acoustical cotton of fixed thickness is placed in the mould consistent with operatic tunes shape after module, and first compression is shaped, and can control the compression ratio of acoustical cotton different parts, produces the acoustical cotton of the operatic tunes after the module of more fitting.The method that this kind made acoustical cotton is compared tool with existing artificial bonding acoustical cotton and is had the following advantages:
One, by machineries such as compressors, complete the making of acoustical cotton, effectively reduced workman's quantity, saved manually, reduced production cost, improved production efficiency.
Two, can make the acoustical cotton of different-thickness, higher with the laminating degree of the operatic tunes after module, good product consistency.
Three, reduced greatly the F0 of module, made the frequency band of module wider, the acoustical behavior of module is better.
Accompanying drawing explanation
Fig. 1 is the stereo decomposing structural representation of loud speaker module of the present invention;
Fig. 2 is the constitutional diagram of Fig. 1;
Fig. 3 is the cross-sectional view of loud speaker module of the present invention;
Fig. 4 is the structural representation of the first acoustical cotton in Fig. 1;
Fig. 5 is the structural representation of the second acoustical cotton in Fig. 1;
Fig. 6 is heat pressing process schematic diagram;
Fig. 7 is the structure chart of a kind of acoustical cotton of heat pressing process processing;
Fig. 8 is the structure chart of the another kind of acoustical cotton of heat pressing process processing;
Fig. 9 is the structure chart of another acoustical cotton of heat pressing process processing;
Figure 10 is the structure chart of another acoustical cotton of heat pressing process processing;
In figure: 10, the first housing, the 20, second housing, the 30, the 3rd housing, 32, leak holes, 40, ball top, 42, vibrating diaphragm, 44, voice coil loudspeaker voice coil, 50, basin frame, 500, spacing block set, 520, internal magnet, 522, external magnet, 540, interior washer, 542, outer washer, 544, location division, 60, FPCB, 62, connect shell fragment, 70, the first acoustical cotton, the 72, second acoustical cotton, 74, acoustical cotton raw material, 80, damping, 90, top die head, 92, lower frock.
Embodiment
Below in conjunction with drawings and Examples, further set forth the present invention.
Shown in common with Fig. 3 as shown in Figure 1, Figure 2, a kind of loud speaker module, comprise the first housing 10, the second housing 20 and the 3rd housing 30 that combine, in the space that the first housing 10, the second housing 20 and the 3rd housing 30 surround, contain loudspeaker monomer, loudspeaker monomer involving vibrations system and magnetic circuit system.
As shown in Fig. 1 and Fig. 3 are common, vibrational system comprises that edge is fixed on the vibrating diaphragm 42 between the second housing 20 and the first housing 10, vibrating diaphragm 42 is fixed with ball top 40 near the middle part of a side of the first housing 10, the opposite side of vibrating diaphragm 42 is fixed with voice coil loudspeaker voice coil 44, and the coiling tap of voice coil loudspeaker voice coil 44 is voice coil leads.Magnetic circuit system comprises the basin frame 50 being fixed on the second housing 20, and the center of basin frame 50 bottoms is fixed with internal magnet 520 and interior washer 540 successively, and the marginal position on the long limit, both sides of basin frame 50 bottoms is all fixed with external magnet 522 and outer washer 542 successively.Between internal magnet 520 and interior washer 540 and external magnet 522 and outer washer 542, be provided with magnetic gap, the end of voice coil loudspeaker voice coil 44 is positioned at magnetic gap.Voice coil loudspeaker voice coil 44 is done reciprocal cutting magnetic line movement according to the size and Orientation of the alternating current by its coiling in magnetic gap, and vibrating diaphragm 42 vibrates along with the reciprocating motion of voice coil loudspeaker voice coil 44, instigates air sounding, thereby completes the power conversion between electroacoustic.
As shown in Fig. 1 and Fig. 3 are common, vibrating diaphragm 42 is divided into the front operatic tunes and two cavitys of the rear operatic tunes by whole module inner chamber.The first housing 10 and vibrating diaphragm 42 surround the front operatic tunes, and vibrating diaphragm 42, the second housing 20 and the 3rd housing 30 surround the rear operatic tunes jointly.The module inner chamber that is positioned at the adjacent both sides of loudspeaker monomer sidepiece in module inner chamber is the rear operatic tunes, and the spatial altitude of rear operatic tunes part that is positioned at loudspeaker monomer long side is larger, and the spatial altitude of rear operatic tunes part that is positioned at loudspeaker monomer short brink is less.The rear operatic tunes that spatial altitude is larger is partly coffin, and a side of coffin is plane, and opposite side intermediate altitude is large, and two ends height is little; The rear operatic tunes part that spatial altitude is less is also coffin, and one end height of this coffin is large, and other end height is little.In order to reduce the F0 of module, make intermediate frequency curve more level and smooth, in the rear operatic tunes of module, be provided with the first acoustical cotton 70 and the second acoustical cotton 72, the first acoustical cotton 70 and the second acoustical cotton 72 are horizontally in the rear operatic tunes, the first acoustical cotton 70 is positioned at the rear operatic tunes part that spatial altitude is larger, and the second acoustical cotton 72 is positioned at the rear operatic tunes part that spatial altitude is less.The structure of the first acoustical cotton 70 and the second acoustical cotton 72 as shown in Figure 4 and Figure 5, all consistent with the structure of the rear operatic tunes part at place.The first acoustical cotton 70 and the second acoustical cotton 72 are melamine acoustical cotton, and by heat pressing process once-forming.This kind is more simple by the acoustical cotton processing and fabricating of heat pressing process once-forming, and the housing laminating Du Genggao with surrounding the rear operatic tunes, effectively raises the consistency of product and the acoustical behavior of product.
As shown in Figure 6, heat pressing process is that acoustical cotton raw material 74 is placed in the lower frock 92 consistent with the downside shell structure of the rear operatic tunes, lower frock 92 is fixture, above lower frock 92, be provided with a top die head 90 moving up and down, the structure of top die head 90 is consistent with the upside shell structure of the rear operatic tunes, acoustical cotton raw material 74 is placed into after lower frock, controlling top die head 90 moves down, acoustical cotton raw material 74 is compressed, thereby obtain the acoustical cotton consistent with rear operatic tunes shape.This kind of manufacture craft and existing artificial bonding comparing, reduced cost of labor, improved again production efficiency.
As shown in Figure 1, the position that is positioned at external magnet 522 inner sides on basin frame 50 is provided with spacing block set 500, spacing block set 500 can effectively prevent that external magnet 522 and outer washer 542 are close to internal magnet 520 and interior washer 540 under the effect of magnetic field force, has guaranteed the stability of product.
As shown in Fig. 1 and Fig. 3 are common, the outside of two outer washers 542 is equipped with and lacks the location division 544 that material forms, and location division 544 makes the outside formation hierarchic structure of outer washer 542.When carrying out module group assembling, location division 544 and the second housing 20 fasten, and magnetic circuit system is played to location and position-limiting action.
As shown in Fig. 1 and Fig. 3 are common, voice coil loudspeaker voice coil 44 is many away from one end (being positioned at one end of magnetic gap) number of turns of vibrating diaphragm 42, and thickness is large.Can utilize fully magnetic gap, improve the active force in magnetic field, increase the sensitivity of module.
Shown in common with Fig. 3 as shown in Figure 1, Figure 2, module also comprises the electric connection structure being fixed on the second housing 20, electric connection structure comprises that two FPCB60 that are electrically connected are respectively connected shell fragment 62 with two, two FPCB60 are electrically connected to respectively two voice coil leads, and two connect the circuit that shell fragment 62 is exposed at the electrical connection module outside, outside of module.
As shown in Figure 1, the 3rd housing 30 is provided with for being communicated with leak 32 extraneous and the rear operatic tunes, and leak 32 is for balance module inner and outer air pressure, the function that the dissipation of heat producing while also having vibrational system and magnetic circuit system work is gone out.One end that leak 32 is positioned at the 3rd housing 30 outsides is coated with damping 80.The side that the 3rd housing 30 is positioned at module internal is inner side, and a side that is positioned at module outside is outside.
The present embodiment is only to take illustrating that technical scheme that the module shown in accompanying drawing 1 to 3 processes by heat pressing process acoustical cotton of the present invention as example carries out, in practical application, this technical scheme may be used on arranging in any rear operatic tunes in the loud speaker module of acoustical cotton, owing to being applied in other structure of loudspeaker module, only need to carry out according to the structure of module the change of frock and die head, those skilled in the art are according to the elaboration of this specification, not needing to pay creative work can realize, therefore the embodiment being applied in other structure of loudspeaker module about the technical scheme that adopts heat pressing process to make acoustical cotton describes in detail no longer one by one at this.
The structure of the acoustical cotton making by heat pressing process is also not limited to the structure shown in attached Figure 4 and 5, by changing the structure of frock and die head, can process the acoustical cotton of different structure, the two-sided step structure shown in one side step structure as shown in Figure 7, the pedion circular arc shape structure shown in Fig. 8, Fig. 9, the acoustical cottons such as two-sided convex structure shown in Figure 10.
The name of the first housing relating in the present invention, the second housing and the 3rd housing, just in order to distinguish technical characterictic, does not represent erection sequence, job order and position relationship etc. between three.
The first acoustical cotton relating in the present invention and the name of the second acoustical cotton, just in order to distinguish technical characterictic, do not represent the erection sequence between the two, job order and position relationship etc.
The present invention is not limited to above-mentioned concrete execution mode, and those of ordinary skill in the art is from above-mentioned design, and without performing creative labour, all conversion of having done, within all dropping on protection scope of the present invention.

Claims (10)

1. loud speaker module, comprise shell, in described shell, contain loudspeaker monomer, described loudspeaker monomer involving vibrations system and magnetic circuit system, described loudspeaker monomer is divided into the front operatic tunes and two cavitys of the rear operatic tunes by whole module inner chamber, in the described rear operatic tunes, is provided with acoustical cotton, it is characterized in that, the shape of described acoustical cotton and the described rear operatic tunes are suitable, and the material of described acoustical cotton is melamine, and described acoustical cotton is processed by heat pressing process.
2. loud speaker module according to claim 1, it is characterized in that, the described module inner chamber that is positioned at the adjacent both sides of described loudspeaker monomer sidepiece in described module inner chamber is the described rear operatic tunes, the spatial altitude of described rear operatic tunes part that is positioned at described loudspeaker monomer one side is larger, and the spatial altitude of described rear operatic tunes part that is positioned at described loudspeaker monomer opposite side is less.
3. loud speaker module according to claim 2, is characterized in that, the described rear operatic tunes that spatial altitude is larger is partly coffin, and a side of described coffin is plane, and opposite side intermediate altitude is large, and two ends height is little; The described rear operatic tunes part that spatial altitude is less is also coffin, and described in this, one end height of coffin is large, and other end height is little.
4. loud speaker module according to claim 3, it is characterized in that, in the described rear operatic tunes, horizontally there are two described acoustical cottons, the described rear operatic tunes part that the shape of a described acoustical cotton wherein and spatial altitude are larger is suitable, and the described rear operatic tunes part that the shape of acoustical cotton and spatial altitude are less described in another piece is suitable.
5. according to the loud speaker module described in the arbitrary claim of claim 1 to 4, it is characterized in that, described shell comprises the first housing, the second housing and the 3rd housing combining successively, and described loudspeaker monomer, described the second housing and described the 3rd housing surround the described rear operatic tunes jointly.
6. loud speaker module according to claim 5, it is characterized in that, described magnetic circuit system comprises the basin frame being fixed on described the second housing, and the center of described basin frame is provided with internal magnet and interior washer successively, and the marginal position of described basin frame is provided with external magnet and outer washer successively; The described basin frame that is positioned at described external magnet inner side is provided with for preventing described external magnet and described outer washer mobile spacing block set to the inside.
7. loud speaker module according to claim 6, is characterized in that, described external magnet and described outer washer are arranged on the marginal position on the long limit, both sides of described basin frame.
8. loud speaker module according to claim 7, is characterized in that, the outside of two described outer washers is equipped with and lacks the location division that material forms, and two described location divisions all engage with described the second housing.
9. loud speaker module according to claim 5, is characterized in that, described vibrational system comprises vibrating diaphragm and the voice coil loudspeaker voice coil combining, and described voice coil loudspeaker voice coil is many away from one end number of turns of described vibrating diaphragm, and thickness is large.
10. loud speaker module according to claim 9, it is characterized in that, described module also comprises for being electrically connected to the electric connection structure of described voice coil loudspeaker voice coil and module external circuit, described electric connection structure comprises the FPCB that is electrically connected and is connected shell fragment, described FPCB is electrically connected to described voice coil loudspeaker voice coil, and described connection shell fragment is electrically connected to described module external circuit.
CN201410307252.9A 2014-06-30 2014-06-30 Loudspeaker module Active CN104053102B (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017045463A1 (en) * 2015-09-15 2017-03-23 歌尔股份有限公司 Receiver
WO2018171066A1 (en) * 2017-03-21 2018-09-27 歌尔股份有限公司 Speaker module
WO2019179201A1 (en) * 2018-03-21 2019-09-26 歌尔股份有限公司 Speaker module and electronic device
WO2021243746A1 (en) * 2020-06-02 2021-12-09 瑞声声学科技(深圳)有限公司 Loudspeaker box

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202799032U (en) * 2012-08-25 2013-03-13 歌尔声学股份有限公司 Speaker module
CN103661150A (en) * 2013-12-03 2014-03-26 常州市泛亚微透科技有限公司 Automotive acoustic damping component and production method and application thereof
CN203574855U (en) * 2013-11-14 2014-04-30 歌尔声学股份有限公司 Loudspeaker module
CN203590432U (en) * 2013-11-12 2014-05-07 歌尔声学股份有限公司 Loudspeaker module
CN203912178U (en) * 2014-06-30 2014-10-29 歌尔声学股份有限公司 Loudspeaker module

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202799032U (en) * 2012-08-25 2013-03-13 歌尔声学股份有限公司 Speaker module
CN203590432U (en) * 2013-11-12 2014-05-07 歌尔声学股份有限公司 Loudspeaker module
CN203574855U (en) * 2013-11-14 2014-04-30 歌尔声学股份有限公司 Loudspeaker module
CN103661150A (en) * 2013-12-03 2014-03-26 常州市泛亚微透科技有限公司 Automotive acoustic damping component and production method and application thereof
CN203912178U (en) * 2014-06-30 2014-10-29 歌尔声学股份有限公司 Loudspeaker module

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017045463A1 (en) * 2015-09-15 2017-03-23 歌尔股份有限公司 Receiver
US10284936B2 (en) 2015-09-15 2019-05-07 Goertek Inc. Receiver
WO2018171066A1 (en) * 2017-03-21 2018-09-27 歌尔股份有限公司 Speaker module
WO2019179201A1 (en) * 2018-03-21 2019-09-26 歌尔股份有限公司 Speaker module and electronic device
WO2021243746A1 (en) * 2020-06-02 2021-12-09 瑞声声学科技(深圳)有限公司 Loudspeaker box

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