CN204046809U - Loud speaker module - Google Patents

Loud speaker module Download PDF

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Publication number
CN204046809U
CN204046809U CN201420499407.9U CN201420499407U CN204046809U CN 204046809 U CN204046809 U CN 204046809U CN 201420499407 U CN201420499407 U CN 201420499407U CN 204046809 U CN204046809 U CN 204046809U
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CN
China
Prior art keywords
module
housing
loudspeaker monomer
operatic tunes
acoustical cotton
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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.)
Withdrawn - After Issue
Application number
CN201420499407.9U
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Chinese (zh)
Inventor
邵帅
许超
单连文
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Goertek Inc
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Goertek Inc
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Publication date
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Priority to CN201420499407.9U priority Critical patent/CN204046809U/en
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Abstract

The utility model discloses a kind of loud speaker module, relate to electro-acoustic product technical field, comprise module shell, loudspeaker monomer is contained in described module shell, the phonate hole of described module is positioned at the sidepiece of described loudspeaker monomer, whole module inner chamber is divided into the front operatic tunes and the rear operatic tunes two cavitys by described loudspeaker monomer, the described front operatic tunes communicates with described phonate hole, acoustical cotton is provided with in the described front operatic tunes, described acoustical cotton is fixed on described module shell, and the oscillation space that described acoustical cotton avoids described loudspeaker monomer vibrating diaphragm arranges the utility model just effectively improves the performance of module sensitivity curve at high frequency on the basis not needing to change front operatic tunes cavity body structure, not only increase the acoustical behavior of module, also simplify the front acoustical cavity of module simultaneously.

Description

Loud speaker module
Technical field
The utility model relates to electro-acoustic product technical field, and particularly a kind of side goes out the loud speaker module of acoustic form.
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.
Along with portable electric appts is constantly to light, thin, small and exquisite future development, loud speaker module as portable electric appts acoustic element is also thereupon continuous to light, thin, small and exquisite future development, therefore, increasing loud speaker module design is that ante-chamber side goes out acoustic form by technical staff.Most of sound wave that this kind of structure makes loudspeaker monomer send can not directly radiate, but could will radiate from phonate hole through the reflection of ante-chamber wall, now the transmitted wave of some high frequency sound wave and reflected wave superimposed after can form standing wave in the front operatic tunes, sound wave is no longer pushed ahead, thus the sound wave of this frequency range also would not radiate from phonate hole, this frequency place sound pressure amplitudes of high frequency is caused sharply to reduce, the sensitivity curve of loud speaker module produces deep valley near this frequency, as shown in dashed region in Fig. 9, the sensitivity curve of loud speaker module is create deep valley near 10000Hz in frequency, serious have impact on the sensitivity of loud speaker module in this frequency range, reduce the acoustical behavior of module, cause the performance deficiency of module.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of loud speaker module, and this loud speaker module effectively improves sensitivity high frequency deep valley phenomenon, and product acoustical behavior is high.
For solving the problems of the technologies described above, the technical solution of the utility model is:
A kind of loud speaker module, comprise module shell, loudspeaker monomer is contained in described module shell, the phonate hole of described module is positioned at the sidepiece of described loudspeaker monomer, whole module inner chamber is divided into the front operatic tunes and the rear operatic tunes two cavitys by described loudspeaker monomer, and the described front operatic tunes communicates with described phonate hole, is provided with acoustical cotton in the described front operatic tunes, described acoustical cotton is fixed on described module shell, and the oscillation space that described acoustical cotton avoids described loudspeaker monomer vibrating diaphragm is arranged.
As a kind of execution mode, described acoustical cotton is arranged in the described front operatic tunes of described loudspeaker monomer periphery.
Wherein, described loudspeaker monomer is rectangular configuration, and described acoustical cotton is arranged in the described front operatic tunes of described loudspeaker monomer side.
Wherein, described acoustical cotton and described phonate hole are separately positioned on the relative both sides of described loudspeaker monomer.
Wherein, described module shell comprises the first housing, the second housing and the 3rd housing that combine, described first housing, described second housing and described loudspeaker monomer surround the described front operatic tunes jointly, the position that described second housing is positioned at described loudspeaker monomer side is provided with a groove, described acoustical cotton is arranged in described groove, leaves the space passed through for sound wave between the recess sidewall of described groove near described loudspeaker monomer side and described first housing; Described second housing, described 3rd housing and described loudspeaker monomer surround the described rear operatic tunes jointly.
Wherein, described loudspeaker monomer involving vibrations system and magnetic circuit system, described vibrational system comprises edge part and is fixed on vibrating diaphragm on described second housing, and described vibrating diaphragm is fixed with voice coil loudspeaker voice coil near the side of described magnetic circuit system; Be provided with the FPCB of lead-in wire for being electrically connected described voice coil loudspeaker voice coil and described module external circuit between described acoustical cotton with described bottom portion of groove, one end of described FPCB passes the described front operatic tunes and is electrically connected with described module external circuit.
Wherein, in described recess sidewall, the position of the lead-in wire outlet of corresponding described voice coil loudspeaker voice coil is provided with breach, and the lead-in wire of described voice coil loudspeaker voice coil passes from described indentation, there and is electrically connected with described FPCB.
As another kind of execution mode, described acoustical cotton is fixed on the inwall of the described module shell at described phonate hole place.
As another execution mode, described acoustical cotton is fixed on the inwall of the described module shell relative with the face of speaking of described loudspeaker monomer.
As another execution mode, described loudspeaker monomer comprises monomer shell, contains vibrational system and magnetic circuit system in described monomer shell.
After have employed technique scheme, the beneficial effects of the utility model are:
Phonate hole due to the utility model loud speaker module is positioned at the sidepiece of loudspeaker monomer, and whole module inner chamber is divided into the front operatic tunes and the rear operatic tunes by loudspeaker monomer, and the front operatic tunes is connected with phonate hole, is provided with acoustical cotton in the front operatic tunes.When the quarter-wave that sound source is high frequency frequency apart from the reflecting surface (namely surrounding the outer casing inner wall of the front operatic tunes) of the front operatic tunes, standing wave can be formed in the front operatic tunes after transmitted wave superposes with reflected wave, the utility model has set up acoustical cotton in the front operatic tunes, namely between loudspeaker monomer and front operatic tunes reflecting surface, acoustical cotton is added, covert extends the propagation distance of sound wave in the front operatic tunes, avoid the position producing standing wave, effectively improve the sensitivity of loud speaker module at high band, its sensitivity curve as shown in Figure 10, in figure, in dashed region, the sensitivity curve of this frequency has had improvement clearly compared with the sensitivity curve of frequency identical in Fig. 9, thus improve the acoustical behavior of product.Visible, the utility model just effectively improves the high-frequency sensitivity of module on the basis not needing to change front operatic tunes cavity body structure, not only increases the acoustical behavior of module, also simplify the front acoustical cavity of module simultaneously.
Accompanying drawing explanation
Fig. 1 is the stereo decomposing structural representation of the utility model loud speaker module embodiment one;
Fig. 2 is the constitutional diagram of Fig. 1;
Fig. 3 is the A-A line cutaway view Amplified image of Fig. 2;
Fig. 4 is the constitutional diagram-do not install the first housing of Fig. 1;
Fig. 5 is the B portion enlarged drawing of Fig. 1;
Fig. 6 is the C portion enlarged drawing of Fig. 3;
Fig. 7 is the cross-sectional view of the utility model loud speaker module embodiment two;
Fig. 8 is the cross-sectional view of the utility model loud speaker module embodiment three;
Fig. 9 is the sensitivity curve figure of loud speaker module in prior art;
Figure 10 is the sensitivity curve figure of the utility model loud speaker module;
In figure: 10a, the first housing, 10b, the first housing, 10c, the first housing, 12, phonate hole, 14, retaining wall, 20a, the second housing, 20b, the second housing, 20c, the second housing, 22, reference column, 24, opening, 26, recess sidewall, the 30, the 3rd housing, 40, loudspeaker monomer, 420, ball top, 422, vibrating diaphragm, 424, voice coil loudspeaker voice coil, 426, voice coil leads, 440, frame, 442, magnet, 444, washer, 50a, acoustical cotton, 50b, acoustical cotton, 50c, acoustical cotton, 60, FPCB, 62, pad, 70, the front operatic tunes, 72, the rear operatic tunes.
Embodiment
Below in conjunction with drawings and Examples, set forth the utility model further.
The orientation related in this specification all refers to the direction of the vibrational system of loudspeaker monomer, under orientation, all refer to the direction of the magnetic circuit system of loudspeaker monomer; The inner side related in this specification all refers to the side being positioned at module inner chamber, and outside all refers to be positioned at the side outside module inner chamber.
Embodiment one:
As Fig. 1 and Fig. 2 jointly shown in, a kind of loud speaker module, comprise module shell, module shell comprises the first housing 10a, the second housing 20a and the 3rd housing 30 that combine successively, contain loudspeaker monomer 40 in the space that first housing 10a, the second housing 20a and the 3rd housing 30 surround, loudspeaker monomer 40 is rectangular configuration.The phonate hole 12 of module is positioned at the side of loudspeaker monomer 40, and phonate hole 12 is positioned on the first housing 10a.
As shown in Figure 3, loudspeaker monomer 40 involving vibrations system and magnetic circuit system, vibrational system comprises edge and is fixed on vibrating diaphragm 422 on the second housing 20a, vibrating diaphragm 422 is fixed with ball top 420 near the middle part of the side of the first housing 10a, the opposite side of vibrating diaphragm 422 is fixed with voice coil loudspeaker voice coil 424, and the coiling tap of voice coil loudspeaker voice coil 424 is voice coil leads 426 (as shown in Figure 5).Magnetic circuit system comprises sidepiece and is fixed on frame 440 on the second housing 20a, and frame 440 comprises the bottom of rectangle, and four limits of bottom are equipped with the sidewall with bottom vertical, and the center of bottom is fixed with magnet 442 and washer 444 successively.Be provided with magnetic gap between the sidewall of magnet 442 and washer 444 and frame 440, the end of voice coil loudspeaker voice coil 424 is positioned at magnetic gap.Voice coil loudspeaker voice coil 424 moves up and down in magnetic gap according to the size and Orientation by the audio signal in its coiling, and vibrating diaphragm 422 vibrates along with moving up and down of voice coil loudspeaker voice coil 424, instigates air sounding, thus completes the power conversion between electroacoustic.
Shown in common as shown in Figure 1, Figure 3 and Figure 4, whole module inner chamber is divided into the front operatic tunes 70 and the rear operatic tunes 72 two cavitys by the vibrating diaphragm 422 of loudspeaker monomer 40, first housing 10a, the second housing 20a and vibrating diaphragm 422 surround the front operatic tunes 70 jointly, and vibrating diaphragm 422, second housing 20a and the 3rd housing 30 surround the rear operatic tunes 72 jointly.The front operatic tunes 70 communicates with phonate hole 12.Acoustical cotton 50a is provided with in the front operatic tunes 70, the position that second housing 20a is positioned at loudspeaker monomer 40 side is provided with one for holding acoustical cotton 50a groove, acoustical cotton 50a is arranged in groove, and acoustical cotton 50a and phonate hole 12 lay respectively at the relative both sides of loudspeaker monomer 40.First housing 10a is positioned at the top of acoustical cotton 50a, acoustical cotton 50a is clipped between the first housing 10a and the second housing 20a, and groove is near leaving the space (as shown in Figure 6) passed through for sound wave between the recess sidewall 26 and the first housing 10a of loudspeaker monomer 40 side.Arranging of acoustical cotton 50a covert extends the propagation distance of sound wave in the front operatic tunes 70, avoid the position producing standing wave, effectively improve the sensitivity of module at high band, its sensitivity curve as shown in Figure 10, in figure, in dashed region, the sensitivity curve of this frequency has had improvement clearly compared with the sensitivity curve of frequency identical in Fig. 9, thus improves the acoustical behavior of module.In prior art, some module product can avoid the generation of standing wave by the structure changing the front operatic tunes in addition, but acoustical cavity will certainly increase the complexity of front acoustical cavity before changing, or the volume increasing loud speaker module extends the propagation distance of sound wave in the front operatic tunes, the utility model does not then need to change front cavity configuration just can extend the propagation distance of sound wave in the front operatic tunes, therefore obtains more excellent acoustical behavior under less, simpler modular structure.
As Fig. 1, Fig. 3, Fig. 4 and Fig. 5 jointly shown in, module also comprises the FPCB60 for being electrically connected voice coil leads 426 and module external circuit, one end of FPCB60 is arranged between acoustical cotton 50a and bottom portion of groove, be fixed on the second housing 20a, the other end of FPCB60 passes the front operatic tunes 70 and is electrically connected with module external circuit.The position that bottom portion of groove is provided with upper corresponding three reference columns 22 of three reference columns 22, FPCB60 is respectively equipped with three location holes, and reference column 22 and location hole cooperatively interact and to be fixed on the second housing 20a by FPCB60.FPCB60 between three location holes is provided with two pads 62, in recess sidewall 26, the position (i.e. the position of voice coil leads 426 outlet) of corresponding two pads 62 is provided with two breach respectively, and voice coil leads 426 welds together through breach and pad 62.Acoustical cotton 50a is placed on the inner space that make use of module above FPCB60 fully, improving the sensitivity of module at high band, improve the acoustical behavior of module when not changing module internal structure.
As Fig. 1 and Fig. 5 jointly shown in, on the second housing 20a, the position of corresponding FPCB60 is provided with the opening 24 consistent with FPCB60 width, on first housing 10a, the position of corresponding opening 24 is provided with the retaining wall 14 suitable with opening 24, leave gap between the end of retaining wall 14 and the bottom of opening 24, FPCB60 passes the front operatic tunes 70 from this gap.Retaining wall 14, opening 24 combine with FPCB60 three and locate equal gluing and seal.
As shown in Figure 3, position bottom the corresponding frame of 3rd housing 30 440 is provided with the perforate consistent with size and shape bottom frame 440, after module group assembling completes, the bottom of frame 440 is positioned at perforate, and the outer surface bottom frame 440 flushes with the outer surface of the 3rd housing 30.This kind of structure effectively can reduce the thickness of module, makes module more adapt to the demand of slim or ultrathin electronic equipment.
Acoustical cotton structure of the present utility model and quantity are not limited to above-described embodiment, technical staff can design the structure of acoustical cotton and quantity and riding position according to the structure of the operatic tunes before module in reality, such as: in the both sides of loudspeaker monomer, three sides or surrounding all arrange acoustical cotton etc., acoustical cotton can be connected as a single entity, also can be partitioned organization, this technical staff according to circumstances can choose at random.
Embodiment two:
As shown in Figure 7, present embodiment is substantially identical with embodiment one, and its difference is:
Acoustical cotton 50b is fixed on the first housing 10b, instead of is fixed on the second housing 20b.Acoustical cotton 50b is fixed on the inner side of the first housing 10b at phonate hole 12 place.Acoustical cotton 50b produces standing wave for preventing the sound wave reflexed on this place first housing 10b inwall, has identical technique effect with embodiment one.
Embodiment three:
As shown in Figure 8, present embodiment is substantially identical with embodiment one, and its difference is:
Acoustical cotton 50c is fixed on the first housing 10c, instead of is fixed on the second housing 20c.Acoustical cotton 50c is fixed on the top of loudspeaker monomer, on the inwall of the first housing 10c that face of namely speaking with loudspeaker monomer is relative, and leaves the space for diaphragm oscillations between acoustical cotton 50c and loudspeaker monomer.Acoustical cotton 50c produces standing wave for preventing the sound wave reflexed on this place first housing 10c inwall, has identical technique effect with embodiment one
Embodiment four:
Present embodiment and embodiment one, embodiment two are all substantially identical with embodiment three, and its difference is:
Loudspeaker monomer comprises monomer shell, contains vibrational system and magnetic circuit system in monomer shell.And the FPCB of module passes from the rear operatic tunes of module, the end that FPCB is positioned at the rear operatic tunes is electrically connected with loudspeaker monomer, and the end that FPCB passes the rear operatic tunes is electrically connected with module external circuit.As for structure and the non-invention main points of the present utility model of mounting means of FPCB, and those skilled in the art all can realize according to prior art, therefore no longer describes in detail about the structure of the FPCB of present embodiment and mounting means.
The utility model is set up acoustical cotton and is not limited to the modular structure in the various embodiments described above, front acoustical cavity and acoustical cotton structure to the technical scheme improving the sensitivity of module high frequency curve in the front operatic tunes; as long as be provided with acoustical cotton in the front operatic tunes; and acoustical cotton is used to the product improving the sensitivity of module high frequency curve; then no matter whether its modular structure, front acoustical cavity and acoustical cotton structure be identical with the utility model, all drops within protection range of the present utility model.
The name of the first housing related in the utility model, the second housing and the 3rd housing, just in order to distinguish technical characteristic, does not represent the erection sequence between three, job order and position relationship etc.
The utility model 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 made, all drop within protection range of the present utility model.

Claims (10)

1. loud speaker module, comprise module shell, loudspeaker monomer is contained in described module shell, the phonate hole of described module is positioned at the sidepiece of described loudspeaker monomer, and whole module inner chamber is divided into the front operatic tunes and the rear operatic tunes two cavitys by described loudspeaker monomer, and the described front operatic tunes communicates with described phonate hole, it is characterized in that, be provided with acoustical cotton in the described front operatic tunes, described acoustical cotton is fixed on described module shell, and the oscillation space that described acoustical cotton avoids described loudspeaker monomer vibrating diaphragm is arranged.
2. loud speaker module according to claim 1, is characterized in that, described acoustical cotton is arranged in the described front operatic tunes of described loudspeaker monomer periphery.
3. loud speaker module according to claim 2, is characterized in that, described loudspeaker monomer is rectangular configuration, and described acoustical cotton is arranged in the described front operatic tunes of described loudspeaker monomer side.
4. loud speaker module according to claim 3, is characterized in that, described acoustical cotton and described phonate hole are separately positioned on the relative both sides of described loudspeaker monomer.
5. the loud speaker module according to the arbitrary claim of claim 2 to 4, it is characterized in that, described module shell comprises the first housing, the second housing and the 3rd housing that combine, described first housing, described second housing and described loudspeaker monomer surround the described front operatic tunes jointly, the position that described second housing is positioned at described loudspeaker monomer side is provided with a groove, described acoustical cotton is arranged in described groove, leaves the space passed through for sound wave between the recess sidewall of described groove near described loudspeaker monomer side and described first housing; Described second housing, described 3rd housing and described loudspeaker monomer surround the described rear operatic tunes jointly.
6. loud speaker module according to claim 5, it is characterized in that, described loudspeaker monomer involving vibrations system and magnetic circuit system, described vibrational system comprises edge part and is fixed on vibrating diaphragm on described second housing, and described vibrating diaphragm is fixed with voice coil loudspeaker voice coil near the side of described magnetic circuit system; Be provided with the FPCB of lead-in wire for being electrically connected described voice coil loudspeaker voice coil and described module external circuit between described acoustical cotton with described bottom portion of groove, one end of described FPCB passes the described front operatic tunes and is electrically connected with described module external circuit.
7. loud speaker module according to claim 6, is characterized in that, in described recess sidewall, the position of the lead-in wire outlet of corresponding described voice coil loudspeaker voice coil is provided with breach, and the lead-in wire of described voice coil loudspeaker voice coil passes from described indentation, there and is electrically connected with described FPCB.
8. loud speaker module according to claim 1, is characterized in that, described acoustical cotton is fixed on the inwall of the described module shell at described phonate hole place.
9. loud speaker module according to claim 1, is characterized in that, described acoustical cotton is fixed on the inwall of the described module shell relative with the face of speaking of described loudspeaker monomer.
10. the loud speaker module according to the arbitrary claim of claim 2,8 or 9, it is characterized in that, described loudspeaker monomer comprises monomer shell, contains vibrational system and magnetic circuit system in described monomer shell.
CN201420499407.9U 2014-09-01 2014-09-01 Loud speaker module Withdrawn - After Issue CN204046809U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104219607A (en) * 2014-09-01 2014-12-17 歌尔声学股份有限公司 Loudspeaker module
CN110248275A (en) * 2019-06-06 2019-09-17 华勤通讯技术有限公司 Half loudspeaker mould group and electronic equipment

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104219607A (en) * 2014-09-01 2014-12-17 歌尔声学股份有限公司 Loudspeaker module
WO2016034012A1 (en) * 2014-09-01 2016-03-10 歌尔声学股份有限公司 Speaker module
CN104219607B (en) * 2014-09-01 2017-01-11 歌尔股份有限公司 Loudspeaker module
US10158937B2 (en) 2014-09-01 2018-12-18 Goertek Inc. Speaker module
CN110248275A (en) * 2019-06-06 2019-09-17 华勤通讯技术有限公司 Half loudspeaker mould group and electronic equipment

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AV01 Patent right actively abandoned
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Granted publication date: 20141224

Effective date of abandoning: 20170111