CN203368723U - Loudspeaker module - Google Patents
Loudspeaker module Download PDFInfo
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- CN203368723U CN203368723U CN 201320452268 CN201320452268U CN203368723U CN 203368723 U CN203368723 U CN 203368723U CN 201320452268 CN201320452268 CN 201320452268 CN 201320452268 U CN201320452268 U CN 201320452268U CN 203368723 U CN203368723 U CN 203368723U
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- convex edge
- monomer
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- loud speaker
- speaker module
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Abstract
The utility model discloses a loudspeaker module. The loudspeaker module relates to the electroacoustic product technology field, and comprises a front shell and a back shell combined as one. A loudspeaker monomer is accepted in a module inner cavity defined by the front shell and the back shell, and an annular protruding edge extending towards the outer side of the loudspeaker monomer is arranged around the loudspeaker monomer; one end face of the protruding edge is sealed and combined with the front shell, and the end face structure of the protruding edge matches the surface structure of the front shell at the combination position. The loudspeaker module of the utility model prevents an acoustic short circuit effectively while having a front acoustic cavity of a smaller size, possesses the high frequency response of a wider frequency band, and is high in acoustic performance.
Description
Technical field
The utility model relates to the electro-acoustic product technical field, particularly a kind of loud speaker module.
Background technology
The loud speaker module is the important acoustic element in portable electric appts, for converting electrical energy into acoustic energy, the sounding parts of portable electric appts, yet a serious acoustical behavior that has influence on the loud speaker module of technical problem meeting is arranged, and this technical problem those skilled in the art are referred to as " acoustic short circuit "." acoustic short circuit " refers to 180 ° of the sound wave phase phasic differences of diaphragm of loudspeaker front and back institute radiation, and the front operatic tunes of module communicates with the rear operatic tunes, and the vibrating diaphragm sound of radiation and the acoustic phase of vibrating diaphragm front is backward offset, and then affects the acoustical behavior of loud speaker module.
In order to overcome the technical problem of above-mentioned acoustic short circuit, those skilled in the art normally adopts and paste a compressible foam between the fore shell of the protecgulum of loudspeaker monomer and loud speaker module, in order to the front operatic tunes that prevents the loud speaker module, with the rear operatic tunes, communicates.But, foam is to have certain thickness object, single with regard to sealing, should be that the larger sealing of thickness of foam is better, to there is certain thickness foam and stick between loudspeaker monomer and loud speaker module fore shell, and bring following problem can to the overall performance of loud speaker module:
If the thickness of a loud speaker module is certain, pasted the volume that will increase the front operatic tunes of loud speaker module after the foam, the volume of the operatic tunes after will certainly reducing accordingly the thickness of loudspeaker monomer or dwindling the loud speaker module.The reducing of loudspeaker monomer thickness can cause dwindling of its inner acoustic element size, can reduce sensitivity, power output of loud speaker module etc., thereby reduced the acoustical behavior of loud speaker module; Front operatic tunes increase can reduce the high frequency bandwidth of loud speaker module, and the rear operatic tunes reduces can reduce the low frequency bandwidth of loud speaker module, causes the distortion etc. of sounding of loud speaker module.
If the rear operatic tunes given volume of the thickness of two loudspeaker monomers and loud speaker module, pasted after the foam except meeting reduces the high frequency bandwidth of loud speaker module, also will increase the thickness of loud speaker module, this can not meet the trend of loud speaker module slimming development.
The 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 is when effectively having prevented acoustic short circuit, and front operatic tunes volume is less, has wider frequency response, and 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 the fore shell and the back cover that are combined as a whole, contain loudspeaker monomer in the module inner chamber that described fore shell and back cover surround, the periphery of described loudspeaker monomer is provided with the cyclic convex edge extended to the described loudspeaker monomer outside, an end face of described convex edge and described fore shell sealing combination, the end face structure of described convex edge is suitable with the surface texture of the described fore shell at the place that combines.
Wherein, defining described convex edge is front end face with respect to the end face of the bottom of described fore shell, the front end face of described convex edge and described fore shell sealing combination.
Wherein, described loudspeaker monomer comprises monomer shell and the monomer protecgulum combined, and in the cavity that described monomer shell and monomer protecgulum surround, contains vibrational system and magnetic circuit system.
Wherein, the longitudinal profile structure of described convex edge is square, trapezoidal or triangle.
As a kind of execution mode, described convex edge is arranged at the end of described monomer shell away from described vibrational system, is provided with annular boss portion in described fore shell, and the front end face of described convex edge is combined with the end face seal of described boss portion.Described convex edge and described monomer shell are structure as a whole.
As another kind of execution mode, described convex edge is arranged at the end of described monomer shell near described vibrational system, is provided with annular boss portion in described fore shell, and the front end face of described convex edge is combined with the end face seal of described boss portion.Described convex edge and described monomer shell are structure as a whole.
As another execution mode, described convex edge is arranged on described monomer protecgulum, the end face of the front end face of described convex edge and described monomer protecgulum, and the front end face of described convex edge is combined with the sealed bottom of described fore shell.Described convex edge and described monomer protecgulum are structure as a whole.
After having adopted technique scheme, the beneficial effects of the utility model are:
Because the utility model loud speaker module comprises fore shell and the back cover be combined as a whole, contain loudspeaker monomer in the module inner chamber that fore shell and back cover surround, the periphery of loudspeaker monomer is provided with the cyclic convex edge extended to the loudspeaker monomer outside, end face of convex edge and fore shell sealing combination, the end face structure of convex edge is suitable with the surface texture of the fore shell located of combining.This convex edge that is located at the loudspeaker monomer periphery can effectively prevent that with the technological means of fore shell sealing combination the front operatic tunes of loud speaker module from communicating with the rear operatic tunes, also improved the acoustical behavior of loud speaker module in the technical problem that has solved acoustic short circuit.Concrete beneficial effect can embody from following two aspects:
If the thickness of a loud speaker module is certain, operatic tunes smaller volume before loud speaker module of the present utility model, for the expansion of loudspeaker monomer size or rear operatic tunes volume provides steric requirements, the increase of loudspeaker monomer size can improve the acoustical behavioies such as the sensitivity of loud speaker module and power output; The front operatic tunes diminishes and can increase the high frequency response bandwidth of loud speaker module, and rear operatic tunes volume increases the LF-response bandwidth that can strengthen the loud speaker module, promotes the acoustical behavior of loud speaker module.
If the loudspeaker monomer size of two loud speaker module internal and rear operatic tunes given volume, operatic tunes smaller volume before the utility model loud speaker module, can also reduce the height of loud speaker module when increasing loud speaker module high frequency response bandwidth, make the attenuation of loud speaker module, meet the requirement of loud speaker module slimming development.
The accompanying drawing explanation
Fig. 1 is the stereo decomposing structural representation of the utility model loud speaker module embodiment mono-;
Fig. 2 is the internal structure schematic diagram of the utility model loud speaker module embodiment mono-;
Fig. 3 is the external structure schematic diagram of the utility model loud speaker module embodiment mono-;
Fig. 4 is the A-A line cutaway view Amplified image of Fig. 3;
Fig. 5 is the cross-sectional view of the utility model loud speaker module embodiment bis-;
Fig. 6 is the cross-sectional view of the utility model loud speaker module embodiment tri-;
In figure: 10a, fore shell, 10b, fore shell, 10c, fore shell, 12a, boss portion, 12b, boss portion, 20, loudspeaker monomer, 21, convex edge, 22a, monomer shell, 22b, monomer shell, 22c, monomer shell, 24a, monomer protecgulum, 24b, monomer protecgulum, 260, magnetic conductive board, 262, internal magnet, 264, external magnet, 266, interior washer, 268, outer washer, 280, vibrating diaphragm, 282, the ball item, 284, voice coil loudspeaker voice coil, 30, FPCB, 40, back cover.
Embodiment
Below in conjunction with drawings and Examples, further set forth the utility model.
Embodiment mono-:
As shown in Fig. 1 and Fig. 2 are common, a kind of loud speaker module, comprise the fore shell 10a and the back cover 40 that are combined as a whole, fore shell 10a and back cover 40 surround the module inner chamber, the module inner chamber is divided into two parts, contain loudspeaker monomer 20 in first less cavity, the cavity that opposite side is larger is the rear operatic tunes, and loudspeaker monomer 20 arranges with rear operatic tunes horizontal Tile.The periphery of loudspeaker monomer 20 is provided with the cyclic convex edge 21 extended to loudspeaker monomer 20 outsides, is provided with annular boss portion 12a in fore shell 10a, and boss portion 12a and fore shell 10a are structure as a whole, and the end face of boss portion 12a is lower than the open end of fore shell 10a.Definition convex edge 21 is front end face with respect to the end face of fore shell 10a bottom, another end face of convex edge 21 is rear end face, the front end face of convex edge 21 is overlapped on the end face of boss portion 12a, and suitable with the end face structure of boss portion 12a, and the end face of the front end face of convex edge 21 and boss portion 12a seals combination by viscose glue.The loud speaker module also comprises for being electrically connected to the FPCB30 of loudspeaker monomer 20 and module external circuit.The technological means of being combined with the end face seal of boss portion 12a in this convex edge 21 that is located at loudspeaker monomer 20 peripheries can effectively prevent that the front operatic tunes of loud speaker module from communicating with the rear operatic tunes, also improved the acoustical behavior of loud speaker module in the technical problem that has solved acoustic short circuit.
As shown in Fig. 3 and Fig. 4 are common, loudspeaker monomer 20 comprises monomer shell 22a and the monomer protecgulum 24a combined, and in the cavity that monomer shell 22a and monomer protecgulum 24a surround, contains vibrational system and magnetic circuit system.Magnetic circuit system comprises the magnetic conductive board 260 of being combined with monomer shell 22a, and magnetic conductive board 260 is provided with internal magnet 262, and the peripheral ring of internal magnet 262 is wound with external magnet 264, is respectively equipped with interior washer 266 and outer washer 268 on internal magnet 262 and external magnet 264.Internal magnet 262 and interior washer 266 form internal magnetic circuit, and external magnet 264 and outer washer 268 form external magnetic circuit, between internal magnetic circuit and external magnetic circuit, are formed with magnetic gap.Vibrational system comprises that edge part is fixed on the vibrating diaphragm 280 between monomer shell 22a and monomer protecgulum 24a, vibrating diaphragm 280 is fixed with ball item 282 with respect to the middle part of the side of monomer protecgulum 24a, the opposite side of vibrating diaphragm 280 is fixed with voice coil loudspeaker voice coil 284, and the end of voice coil loudspeaker voice coil 284 is positioned at magnetic gap.Voice coil loudspeaker voice coil 284 is according to do the motion of the reciprocating cutting magnetic line of force in magnetic gap by the size and Orientation of the electric current in coil, thereby drive vibrating diaphragm 280, instigates air and completes the electroacoustic conversion.
As shown in Figure 4, convex edge 21 is arranged at the end of monomer shell 22a away from vibrational system, and convex edge 21 is structure as a whole with monomer shell 22a.The longitudinal profile structure of convex edge 21 is the squarish with a chamfering plane, and the chamfering plane layout is 21 rear end face side in convex edge, and being provided with the chamfering plane can the complicated module front casing structure of more effective adaptation.The end face of the front end face of convex edge 21 and boss portion 12a is horizontal plane.
The said structure of the described convex edge 21 of the present embodiment is preferred versions that the difficulty or ease degree of one-tenth of the space of structure according to module shell, module inner chamber and processing is selected, can also adopt other structure in actual applications, as its longitudinal profile structure is triangle or the polygon such as trapezoidal, as long as on the front end face structure of convex edge and fore shell, the end face structure of position combined with it is suitable, can meets between two end faces and by gluing, just can reach sealing effectiveness and get final product.
In the present embodiment, monomer shell 22a is plastic casing; Monomer protecgulum 24a can be the plastics protecgulum, can be also metal bezel.
The assembling process of the utility model loud speaker module is as follows:
S1, assembling loudspeaker monomer 20;
S2, on the front end face of convex edge 21 gluing;
S3, by the vibrational system of glue-coated loudspeaker monomer 20 in the bottom of fore shell 10a is installed on fore shell 10a, the end face adhesive seal of the boss portion 12a of the front end face of convex edge 21 and fore shell 10a;
S4, FPCB30 is welded on loudspeaker monomer 20;
S5, that back cover 40 is fastened on to fore shell 10a is upper, and back cover 40 is integrated by ultrasonic bonding with fore shell 10a, has so far completed the assembly working of the utility model loud speaker module.
Embodiment bis-:
As shown in Figure 5, present embodiment and embodiment mono-are basic identical, and its difference is:
Convex edge 21 is arranged at the end of monomer shell 22b near vibrational system, is provided with annular boss portion 12b in fore shell 10b, and the front end face of convex edge 21 is combined with the end face seal of boss portion 12b, and convex edge 21 is structure as a whole with monomer shell 22b.
In the present embodiment, monomer shell 22b is plastic casing; Monomer protecgulum 24a can be the plastics protecgulum, can be also metal bezel.
Embodiment tri-:
As shown in Figure 6, present embodiment and embodiment mono-are basic identical, and its difference is:
It is upper that convex edge 21 is arranged at monomer protecgulum 24b, and the front end face of convex edge 21 and monomer protecgulum 24b are with respect to the end face of fore shell 10c bottom, and the front end face of convex edge 21 is combined with the sealed bottom of fore shell 10c, and convex edge 21 is structure as a whole with monomer protecgulum 24b.
In the present embodiment, monomer shell 22c is plastic casing; Monomer protecgulum 24b is the plastics protecgulum.In the present embodiment, the structure of fore shell 10c is more simple, is easy to processing, and the volume of the rear operatic tunes is larger, and acoustical behavior is higher.
Implementation of the present utility model is not limited to above-mentioned three kinds, and convex edge can be located at any position of periphery of loudspeaker monomer.
Defined fore shell and back cover in the utility model, it is the definition that those skilled in the art habitually practise, take the loud speaker module towards audience's a side as front, take the loud speaker module dorsad the audience a side as after, the definition of fore shell and back cover only represents the relative position relation between the two, does not represent the absolute positional relation between the two.
Invention main points of the present utility model, for to be sealed with convex edge and the fore shell of loudspeaker monomer periphery, reach the front operatic tunes of isolated loud speaker module and the purpose of the rear operatic tunes.Therefore; no matter convex edge be located at the loudspeaker monomer periphery where, also no matter what structure convex edge is; so long as be provided with projective structure at the loudspeaker monomer periphery, and seal to realize that by this projective structure and module fore shell the technical scheme of the isolated forward and backward operatic tunes all falls into 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 of having done, within all dropping on protection range of the present utility model.
Claims (9)
1. loud speaker module, comprise the fore shell and the back cover that are combined as a whole, contain loudspeaker monomer in the module inner chamber that described fore shell and back cover surround, it is characterized in that, the periphery of described loudspeaker monomer is provided with the cyclic convex edge extended to the described loudspeaker monomer outside, an end face of described convex edge and described fore shell sealing combination, the end face structure of described convex edge is suitable with the surface texture of the described fore shell at the place that combines.
2. loud speaker module according to claim 1, is characterized in that, defining described convex edge is front end face with respect to the end face of the bottom of described fore shell, the front end face of described convex edge and described fore shell sealing combination.
3. loud speaker module according to claim 2, is characterized in that, described loudspeaker monomer comprises monomer shell and the monomer protecgulum combined, and in the cavity that described monomer shell and monomer protecgulum surround, contains vibrational system and magnetic circuit system.
4. loud speaker module according to claim 3, it is characterized in that, described convex edge is arranged at the end of described monomer shell away from described vibrational system, is provided with annular boss portion in described fore shell, and the front end face of described convex edge is combined with the end face seal of described boss portion.
5. loud speaker module according to claim 3, it is characterized in that, described convex edge is arranged at the end of described monomer shell near described vibrational system, is provided with annular boss portion in described fore shell, and the front end face of described convex edge is combined with the end face seal of described boss portion.
6. according to the described loud speaker module of claim 4 or 5, it is characterized in that, described convex edge and described monomer shell are structure as a whole.
7. loud speaker module according to claim 3, is characterized in that, described convex edge is arranged on described monomer protecgulum, the end face of the front end face of described convex edge and described monomer protecgulum, and the front end face of described convex edge is combined with the sealed bottom of described fore shell.
8. loud speaker module according to claim 7, is characterized in that, described convex edge and described monomer protecgulum are structure as a whole.
9. loud speaker module according to claim 1, is characterized in that, the longitudinal profile structure of described convex edge is square, trapezoidal or triangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320452268 CN203368723U (en) | 2013-07-26 | 2013-07-26 | Loudspeaker module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320452268 CN203368723U (en) | 2013-07-26 | 2013-07-26 | Loudspeaker module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203368723U true CN203368723U (en) | 2013-12-25 |
Family
ID=49816435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320452268 Expired - Lifetime CN203368723U (en) | 2013-07-26 | 2013-07-26 | Loudspeaker module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203368723U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103354629A (en) * | 2013-07-26 | 2013-10-16 | 歌尔声学股份有限公司 | Loudspeaker module group |
| CN107896354A (en) * | 2017-12-26 | 2018-04-10 | 歌尔科技有限公司 | A kind of loudspeaker module and the Headphone device with the loudspeaker module |
-
2013
- 2013-07-26 CN CN 201320452268 patent/CN203368723U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103354629A (en) * | 2013-07-26 | 2013-10-16 | 歌尔声学股份有限公司 | Loudspeaker module group |
| CN103354629B (en) * | 2013-07-26 | 2016-12-28 | 歌尔股份有限公司 | Speaker module |
| CN107896354A (en) * | 2017-12-26 | 2018-04-10 | 歌尔科技有限公司 | A kind of loudspeaker module and the Headphone device with the loudspeaker module |
| CN107896354B (en) * | 2017-12-26 | 2024-02-06 | 歌尔科技有限公司 | Speaker module and earphone device with same |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |