CN204598281U - Loud speaker module - Google Patents
Loud speaker module Download PDFInfo
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- CN204598281U CN204598281U CN201520275310.4U CN201520275310U CN204598281U CN 204598281 U CN204598281 U CN 204598281U CN 201520275310 U CN201520275310 U CN 201520275310U CN 204598281 U CN204598281 U CN 204598281U
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- strutting piece
- loud speaker
- speaker module
- operatic tunes
- chamber portion
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Abstract
The utility model discloses a kind of loud speaker module, relate to electro-acoustic product technical field, comprise shell, vibrational system and magnetic circuit system is contained in described shell, described vibrational system comprises the vibrating diaphragm and voice coil loudspeaker voice coil that combine, whole module inner chamber is divided into the front operatic tunes and the rear operatic tunes two cavitys by described vibrating diaphragm, the edge part of described vibrating diaphragm is fixing on the housing by the strutting piece of an annular, described strutting piece is intervally distributed with the expansion chamber portion that multiple scarce material is formed, each described expansion chamber portion is all communicated with the described rear operatic tunes.The utility model loud speaker module solves the technical problem that in prior art, loud speaker module causes F0 to raise because the rear operatic tunes is narrow and small, and after the utility model loud speaker module, operatic tunes volume is larger, and F0 is low, bandwidth, and acoustical behavior is good, long service life; Packaging technology difficulty is low simultaneously, and production efficiency is high.
Description
Technical field
The utility model 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, and vibrational system comprises the vibrating diaphragm and voice coil loudspeaker voice coil that combine, and whole module inner chamber is separated into the front operatic tunes and the rear operatic tunes two cavitys by vibrating diaphragm.F0 (resonance frequency) is an important indicator of loud speaker module, and its value is lower, and the frequency band of loud speaker module is wider, and acoustical behavior is better.FO is mainly by the rear operatic tunes volume of module and the impact of vibrating diaphragm compliance, and rear operatic tunes volume is larger, and F0 value is lower; Vibrating diaphragm compliance is larger, and F0 value is lower.
But, because portable electric appts is constantly to frivolous, slimline development, loud speaker module is also thinned down, more and more less, thus make the volume of the rear operatic tunes also in continuous reduction.The vibrating diaphragm selecting compliance larger in the ever-reduced situation of rear operatic tunes volume of loud speaker module is the effective ways reducing F0, but the easy crimping of vibrating diaphragm that compliance is larger, assembling difficulty is large, in order to reduce the assembling difficulty of the larger vibrating diaphragm of compliance, the becket that technical staff can paste a ring-type at the edge part of vibrating diaphragm as strutting piece to prevent vibrating diaphragm crimping.Although the strutting piece of annular effectively prevents vibrating diaphragm crimping, reduce assembling difficulty, but it can take the space of the rear operatic tunes of a part, causes the reduction of rear operatic tunes effective volume, thus cause the F0 of loud speaker module to raise, again reduce the acoustical behavior of loud speaker 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 rear operatic tunes volume when not increasing assembling difficulty is larger, and F0 is low, bandwidth, and acoustical behavior is good.
For solving the problems of the technologies described above, the technical solution of the utility model is:
A kind of loud speaker module, comprise shell, vibrational system and magnetic circuit system is contained in described shell, described vibrational system comprises the vibrating diaphragm and voice coil loudspeaker voice coil that combine, whole module inner chamber is divided into the front operatic tunes and the rear operatic tunes two cavitys by described vibrating diaphragm, the edge part of described vibrating diaphragm is fixing on the housing by the strutting piece of an annular, and described strutting piece is intervally distributed with the expansion chamber portion that multiple scarce material is formed, each described expansion chamber portion is all communicated with the described rear operatic tunes.
As a kind of execution mode, described expansion chamber portion is positioned at the middle part of described strutting piece and the through hole arranged along described strutting piece, and described through hole longitudinally runs through the upper and lower both sides of described strutting piece.
As another kind of execution mode, described expansion chamber portion be positioned at described strutting piece at least one lateral edges on and the groove arranged along described strutting piece, described groove longitudinally runs through the upper and lower both sides of described strutting piece.
Wherein, the position on described shell on the downside of corresponding described strutting piece is provided with multiple spaced saddle for fixing described strutting piece, forms the breach for dodging described expansion chamber portion between adjacent two described saddles.
Wherein, be provided with connecting portion between two adjacent described saddles, described connecting portion is not provided with on the downside of a lateral edges in described expansion chamber portion in described strutting piece.
Wherein, described strutting piece is round rectangle structure, and described expansion chamber portion is arranged on four straight flanges of described strutting piece; Described saddle is provided with four altogether, and four described saddles lay respectively at the downside in four bights of described strutting piece.
Wherein, described shell comprises the upper casing, mesochite and the lower casing that combine successively, and described vibrating diaphragm and described mesochite and described lower casing surround the described rear operatic tunes jointly, and described saddle and described connecting portion are all arranged on described mesochite.
Wherein, each described saddle is equipped with the retaining wall for locating described magnetic circuit system near a lateral edge portion of described lower casing, and each described retaining wall is all vertical with described saddle and extend to described lower casing.
Wherein, described magnetic circuit system comprises magnetic conductive board, and the middle part of the inner side of described magnetic conductive board is fixed with internal magnet and interior washer successively, and the edge inside described magnetic conductive board is fixed with external magnet and outer washer successively; The edge part of each described saddle is connected with the location division of an annular simultaneously, and described location division is looped around the outside of described outer washer, and the downside of described location division is overlapped on described external magnet.
Wherein, on described lower casing, the position of corresponding described magnetic conductive board is provided with installing hole, and described magnetic conductive board is positioned at described installing hole place, and the outer surface of described magnetic conductive board flushes with the appearance of described lower casing; Be provided with chamfering inclined-plane outside the described lower casing being positioned at described installing hole marginal position, between described chamfering inclined-plane and described magnetic conductive board, form glue groove.
After have employed technique scheme, the beneficial effects of the utility model are:
Because the vibrating diaphragm of the utility model loud speaker module is fixed on shell by the strutting piece of a ring-type, strutting piece is intervally distributed with the expansion chamber portion that multiple scarce material is formed, each rear operatic tunes expanding chamber portion and be all communicated with module.Expand chamber portion be arranged on ensure that supporting role while effectively reduce the volume of strutting piece, thus reduce the space of the rear operatic tunes that it takies, increase the effective volume of the rear operatic tunes, effectively reduce the F0 of module, widen the frequency band of module, improve the acoustical behavior of module greatly.
Because the position on the downside of strutting piece corresponding on shell is provided with multiple spaced saddle for securing supports, formed between adjacent two saddles for dodging the breach expanding chamber portion.Namely spaced saddle does not affect expansion chamber portion and communicates with the rear operatic tunes, realizes the function increasing rear operatic tunes volume, serves support effect simultaneously, add the intensity of the combination between strutting piece and shell, and reduce assembling difficulty to strutting piece.
Owing to being provided with connecting portion between adjacent two saddles, connecting portion is not provided with on the downside of a lateral edges in expansion chamber portion in strutting piece.Arranging of connecting portion further serves support effect to strutting piece, the strutting piece between two saddles effectively can be prevented to be out of shape because of unsettled in the process of diaphragm oscillations, add job stability and the useful life of loud speaker module.
Because each saddle is equipped with retaining wall near a lateral edge portion of lower casing, each retaining wall is all vertical with saddle and extend to lower casing.When carrying out module group assembling, retaining wall can effectively be located magnetic circuit system in the horizontal direction, effectively reduces the difficulty of assembling, improves production efficiency, improve product qualified rate.
Edge part due to each saddle is connected with the location division of an annular simultaneously, and location division is looped around the outside of outer washer, and the downside of location division is overlapped on external magnet.Location division is not only effectively located magnetic circuit system in vertical direction, also add the contact area between magnetic circuit system and shell simultaneously, add the bond strength between magnetic circuit system and module shell, reduce assembling difficulty, extend the useful life of module.
In sum, the utility model loud speaker module solves the technical problem that in prior art, loud speaker module causes F0 to raise because the rear operatic tunes is narrow and small, and after the utility model loud speaker module, operatic tunes volume is larger, F0 is low, bandwidth, acoustical behavior is good, long service life; Packaging technology difficulty is low simultaneously, and production efficiency is high.
Accompanying drawing explanation
Fig. 1 is the sectional structure schematic diagram of the utility model loud speaker module;
Fig. 2 is the structural representation after Fig. 1 removes lower casing and magnetic circuit system;
Fig. 3 is the A portion enlarged drawing of Fig. 1;
Fig. 4 is the structural representation of the strutting piece of the utility model loud speaker module;
Fig. 5 is the another kind of structural representation of the strutting piece of the utility model loud speaker module;
In figure: 10, upper casing, 20, mesochite, 22, location division, 24, saddle, 240, breach, 242, retaining wall, 244, connecting portion, 30, lower casing, 32, chamfering inclined-plane, 40, ball top, 42, vibrating diaphragm, 44, voice coil loudspeaker voice coil, 50, strutting piece, 52, expand chamber portion, 60, magnetic conductive board, 62, internal magnet, 64, external magnet, 66, interior washer, 68, outer washer, 70, the front operatic tunes, 72, phonate hole, 74, 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 vibrational system, under orientation, all refer to the direction of magnetic circuit system; The side at nearly magnetic circuit system center is all depended in the inner side related in this specification, and outside all refers to the side away from magnetic circuit system center.
Embodiment one:
As shown in Figure 1, a kind of loud speaker module, comprises shell, and shell is made up of the upper casing 10 combined successively, mesochite 20 and lower casing 30, contains vibrational system and magnetic circuit system in the space that upper casing 10, mesochite 20 and lower casing 30 surround.Whole module inner chamber is divided into the front operatic tunes 70 and the rear operatic tunes 74 two cavitys by vibrational system, and vibrational system and upper casing 10 and mesochite 20 define the front operatic tunes 70 jointly; Vibrational system and mesochite 20 and lower casing 30 define the rear operatic tunes 74 jointly.Module is speak module in side, and phonate hole 72 is arranged on module one end away from vibrational system and magnetic circuit system, and is jointly surrounded by upper casing 10 and mesochite 20.
As shown in Figure 1, vibrational system is comprised edge part and is fixed on vibrating diaphragm 42 on mesochite 20 by the strutting piece 50 of a ring-type, the center that vibrating diaphragm 42 is positioned at the side of the front operatic tunes 70 is fixed with ball top 40, the side that vibrating diaphragm 42 is positioned at the rear operatic tunes 74 is fixed with voice coil loudspeaker voice coil 44, and strutting piece 50 is fixed on the side that vibrating diaphragm 42 is positioned at the rear operatic tunes 74.Magnetic circuit system comprises the magnetic conductive board 60 be fixed on lower casing 30, center inside magnetic conductive board 60 is fixed with internal magnet 62 and interior washer 66 successively, marginal position inside magnetic conductive board 60 is fixed with external magnet 64 and outer washer 68 successively, and external magnet 64 and outer washer 68 are looped around the periphery of internal magnet 62 and interior washer 66.Internal magnet 62 and interior washer 66 form the internal magnetic circuit of magnetic circuit system, and external magnet 64 and outer washer 68 form the external magnetic circuit of magnetic circuit system, are provided with magnetic gap between internal magnetic circuit and external magnetic circuit, and the end of voice coil loudspeaker voice coil 44 is positioned at magnetic gap.Voice coil loudspeaker voice coil 44 does reciprocal cutting magnetic line movement according to the size and Orientation of the sound wave signal of telecommunication by its coiling in magnetic gap, vibrating diaphragm 42 and ball top 40 vibrate along with the motion of voice coil loudspeaker voice coil, and instigate air sounding, thus the sound wave signal of telecommunication is converted to voice signal spreads out of from phonate hole 72.
As Fig. 1 and Fig. 4 jointly shown in, strutting piece 50 is round rectangle structure, for becket (as copper ring or steel loop etc.), multiple expansion chamber portion 52 has been spaced along the bearing of trend on each limit in the center of four straight flanges of strutting piece 50, expanding chamber portion 52 is on strutting piece 50, lack material formation depression or cavernous structure, and each chamber portion 52 that expands all communicates with the rear operatic tunes 74, can increase the volume of the rear operatic tunes 74, thus reduce the F0 of module, promote the acoustical behavior of module.
As Fig. 3 and Fig. 4 jointly shown in, preferably expanding chamber portion 52 in present embodiment is manhole, it longitudinally runs through the upper and lower both sides of strutting piece 50, and expanding chamber portion in practical application can also be tri-angle-holed, square opening, strip hole and diamond hole etc., all can realize the function expanding the rear operatic tunes.Due in the middle of above-mentioned various holes, circular port processing is the simplest, and manhole formed on strutting piece 50 is the cavity of a cylindrical structure, in the middle of above-mentioned various cylinder, under the condition that volume is equal, cylindrical surface is minimum, namely after expansion, operatic tunes volume is identical, the intensity infringement of manhole to strutting piece 50 is minimum, and therefore, present embodiment preferably expands chamber portion 52 for manhole.
As shown in Figures 2 and 3, location interval on mesochite 20 on the downside of corresponding strutting piece 50 is provided with four saddles 24, four saddles 24 are separately positioned on the position that strutting piece 50 is not provided with four bights expanding chamber portion 52, and saddle 24 is the arc structure identical with the corner structure of strutting piece 50, the downside of strutting piece 50 is fixed on the upper surface of saddle 24, being formed between two adjacent saddles 24 for dodging the breach 240 expanding chamber portion 52, expanding chamber portion 52 and being communicated with the rear operatic tunes 74 by breach 240.Between two adjacent saddles 24, namely the position forming breach 240 is provided with connecting portion 244, connecting portion 244 is list structure, its two ends are connected with the saddle 24 being positioned at its two ends respectively, and connecting portion 244 is positioned at the downside of the outer ledge of strutting piece 50, and the width of connecting portion 244 is less than the minimum range of expansion chamber portion 52 to strutting piece 50 outer ledge, namely connecting portion 52 avoids and expands chamber portion 52.Saddle 24 and connecting portion 244 are all structure as a whole with mesochite 20, play support and fixing effect to strutting piece 50.
As Fig. 2 and Fig. 3 jointly shown in, each saddle 24 is provided with the retaining wall 242 for locating magnetic circuit system near a lateral edge portion of lower casing 30, and each retaining wall 242 is all vertical with the lower surface of saddle 24, and extends to the direction of lower casing 30.When carrying out module group assembling, retaining wall 242 can play positioning action to magnetic circuit system in the horizontal direction.The edge part of each saddle 24 is connected with the location division 22 of an annular simultaneously, location division 22 is looped around the outside of outer washer 68, the width of outer washer 68 is less than the width of external magnet 64, its outward flange is less than the outward flange of external magnet 64, thus the vacancy of annular is defined in external magnet 64 outer edge, location division 22 is positioned at this vacancy, and the downside of location division 22 is overlapped on the upside of external magnet 64.When carrying out module group assembling, positioning action can be played to magnetic circuit system in vertical direction in location division 22.
As shown in Figure 1, on lower casing 30, the position of corresponding magnetic conductive board 60 is provided with an installing hole, the size and shape of installing hole is all suitable with magnetic conductive board 60, after module group assembling completes, magnetic conductive board 60 is positioned at installing hole place, and the outer surface of magnetic conductive board 60 flushes with the outer surface of lower casing 30, this kind of structure can reduce the thickness of module to greatest extent, makes module can meet the requirement of electronic equipment slimization development.
As shown in Figure 1, the outside being positioned at the lower casing 30 of installing hole edge is provided with chamfer plane 32, chamfer plane 32 is looped around the periphery of magnetic conductive board 60, and define the glue groove of annular between the side of magnetic conductive board 60, glue groove adds the glue-spread between lower casing 30 and magnetic conductive board 60, add the bond strength between magnetic conductive board 60 and lower casing 30, also improve the sealing property of the rear operatic tunes 74.
Embodiment two:
Present embodiment is substantially identical with embodiment one, and its difference is:
As Fig. 5 jointly shown in, expand chamber portion 52 and be arranged on the dual-side edge of strutting piece 50, in practical application, expand the lateral edge portion that chamber portion 52 also only can be arranged on strutting piece 50.
The edge part that expansion chamber portion 52 is arranged on strutting piece 50 can play the function expanding the rear operatic tunes equally, but compared with embodiment one, the strutting piece 50 of present embodiment is all more weak with the bond strength of mesochite and vibrating diaphragm, and therefore, embodiment one is preferred version of the present utility model.
The utility model, by perforate on strutting piece, while guarantee strutting piece intensity, reduces the volume of strutting piece, increases the effective volume of the rear operatic tunes, effectively reduce the F0 of module, widened the frequency band of module, improved the acoustical behavior of module.
The utility model above-described embodiment is only on strutting piece, arrange illustrating of the technical scheme lacking the expansion chamber portion that material is formed to the utility model, in practical application, the technical solution of the utility model is not limited to the structure of above-mentioned module, can be applicable to any one arranges in the module of strutting piece at the edge of vibrating diaphragm, therefore no matter whether the structure of loud speaker module is identical with above-mentioned modular structure, also no matter whether the structure of strutting piece is identical with the structure of above-mentioned strutting piece, as long as arrange the expansion chamber portion lacking material and formed on strutting piece, in order to increase the rear operatic tunes of module, the product reducing module F0 all falls in protection range of the present utility model.
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 shell, vibrational system and magnetic circuit system is contained in described shell, described vibrational system comprises the vibrating diaphragm and voice coil loudspeaker voice coil that combine, whole module inner chamber is divided into the front operatic tunes and the rear operatic tunes two cavitys by described vibrating diaphragm, and the edge part of described vibrating diaphragm is fixing on the housing by the strutting piece of an annular, it is characterized in that, described strutting piece is intervally distributed with the expansion chamber portion that multiple scarce material is formed, each described expansion chamber portion is all communicated with the described rear operatic tunes.
2. loud speaker module according to claim 1, is characterized in that, described expansion chamber portion is positioned at the middle part of described strutting piece and the through hole arranged along described strutting piece, and described through hole longitudinally runs through the upper and lower both sides of described strutting piece.
3. loud speaker module according to claim 1, is characterized in that, described expansion chamber portion be positioned at described strutting piece at least one lateral edges on and the groove arranged along described strutting piece, described groove longitudinally runs through the upper and lower both sides of described strutting piece.
4. the loud speaker module according to the arbitrary claim of claims 1 to 3, it is characterized in that, position on described shell on the downside of corresponding described strutting piece is provided with multiple spaced saddle for fixing described strutting piece, forms the breach for dodging described expansion chamber portion between adjacent two described saddles.
5. loud speaker module according to claim 4, is characterized in that, be provided with connecting portion between two adjacent described saddles, described connecting portion is not provided with on the downside of a lateral edges in described expansion chamber portion in described strutting piece.
6. loud speaker module according to claim 5, is characterized in that, described strutting piece is round rectangle structure, and described expansion chamber portion is arranged on four straight flanges of described strutting piece; Described saddle is provided with four altogether, and four described saddles lay respectively at the downside in four bights of described strutting piece.
7. loud speaker module according to claim 6, it is characterized in that, described shell comprises the upper casing, mesochite and the lower casing that combine successively, and described vibrating diaphragm and described mesochite and described lower casing surround the described rear operatic tunes jointly, and described saddle and described connecting portion are all arranged on described mesochite.
8. loud speaker module according to claim 7, is characterized in that, each described saddle is equipped with the retaining wall for locating described magnetic circuit system near a lateral edge portion of described lower casing, and each described retaining wall is all vertical with described saddle and extend to described lower casing.
9. loud speaker module according to claim 8, it is characterized in that, described magnetic circuit system comprises magnetic conductive board, and the middle part of the inner side of described magnetic conductive board is fixed with internal magnet and interior washer successively, and the edge inside described magnetic conductive board is fixed with external magnet and outer washer successively; The edge part of each described saddle is connected with the location division of an annular simultaneously, and described location division is looped around the outside of described outer washer, and the downside of described location division is overlapped on described external magnet.
10. loud speaker module according to claim 9, is characterized in that, on described lower casing, the position of corresponding described magnetic conductive board is provided with installing hole, and described magnetic conductive board is positioned at described installing hole place, and the outer surface of described magnetic conductive board flushes with the appearance of described lower casing; Be provided with chamfering inclined-plane outside the described lower casing being positioned at described installing hole marginal position, between described chamfering inclined-plane and described magnetic conductive board, form glue groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520275310.4U CN204598281U (en) | 2015-04-30 | 2015-04-30 | Loud speaker module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520275310.4U CN204598281U (en) | 2015-04-30 | 2015-04-30 | Loud speaker module |
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| Publication Number | Publication Date |
|---|---|
| CN204598281U true CN204598281U (en) | 2015-08-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520275310.4U Active CN204598281U (en) | 2015-04-30 | 2015-04-30 | Loud speaker module |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104811857A (en) * | 2015-04-30 | 2015-07-29 | 歌尔声学股份有限公司 | Loudspeaker module |
| CN108366326A (en) * | 2018-01-30 | 2018-08-03 | 瑞声科技(新加坡)有限公司 | Loudspeaker enclosure |
| CN112153502A (en) * | 2020-08-27 | 2020-12-29 | 瑞声新能源发展(常州)有限公司科教城分公司 | Loudspeaker box |
-
2015
- 2015-04-30 CN CN201520275310.4U patent/CN204598281U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104811857A (en) * | 2015-04-30 | 2015-07-29 | 歌尔声学股份有限公司 | Loudspeaker module |
| CN104811857B (en) * | 2015-04-30 | 2018-09-07 | 歌尔股份有限公司 | Loud speaker module |
| US10212510B2 (en) | 2015-04-30 | 2019-02-19 | Goertek Inc. | Loudspeaker module |
| CN108366326A (en) * | 2018-01-30 | 2018-08-03 | 瑞声科技(新加坡)有限公司 | Loudspeaker enclosure |
| CN108366326B (en) * | 2018-01-30 | 2020-06-16 | 瑞声科技(新加坡)有限公司 | Loudspeaker box |
| CN112153502A (en) * | 2020-08-27 | 2020-12-29 | 瑞声新能源发展(常州)有限公司科教城分公司 | Loudspeaker box |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 261031 Dongfang Road, Weifang high tech Industrial Development Zone, Shandong, China, No. 268 Patentee after: Goertek Inc. Address before: 261031 Dongfang Road, Weifang high tech Industrial Development Zone, Shandong, China, No. 268 Patentee before: Goertek Inc. |