Loud speaker module
The utility model relates to electro-acoustic product technical field, particularly a kind of loud speaker module.
Loud speaker module is a kind of important acoustic element in portable electric appts, for completing the conversion between the signal of telecommunication and voice signal, is a kind of energy conversion device.Loud speaker module generally includes module shell, contains loudspeaker monomer in module shell, and loudspeaker monomer needs location structure to be fixed in module inner chamber.Existing loud speaker module normally ensures the location of loudspeaker monomer in module inner chamber by the extruding being arranged on lower casing on barricade on module shell and module, but along with portable electric appts is constantly to frivolous, small and exquisite future development, cause loud speaker module also must thin down, more and more less, the space of such loud speaker module internal is just more and more less, if still adopt barricade to locate in the module inner chamber that this is more and more less, barricade will take module intracavity space greatly, thus cause the operatic tunes of module to reduce, the acoustical behavior of loud speaker module is caused to decline.
Utility model content
For above defect, technical problem to be solved in the utility model is to provide a kind of loud speaker module, this loud speaker module has saved module internal space to greatest extent while ensure that loudspeaker monomer effective location, improves the acoustical behavior of loud speaker module.
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, described loudspeaker monomer comprises the monomer protecgulum and monomer shell that combine, vibrational system and magnetic circuit system is contained in the space that described monomer protecgulum and described monomer shell surround, the side-wall outer side of described monomer shell is provided with multiple reference column, each described reference column all protrudes from the sidewall surfaces of described monomer shell, and is extended to the lower end of described monomer shell by the upper end of described monomer shell along the sidewall of described monomer shell; On described module shell, the position of corresponding each described reference column is respectively equipped with positioning boss, and each described positioning boss is vertically provided with the location hole suitable with each described reference column respectively.
Wherein, the lower surface of each described reference column is equipped with ultrasound lines, each described reference column is combined by Ultrasonic welding processes with described module shell.
Wherein, described reference column and described monomer shell are structure as a whole.
Wherein, described loudspeaker monomer is rectangular configuration, and four sidewalls of described monomer shell are respectively provided with a described reference column.
Wherein, each described reference column is all arranged on the centre position of corresponding described monomer side wall of outer shell.
Wherein, described module shell comprises the upper casing and lower casing that combine, and each described positioning boss is arranged on the inner side of described lower casing.
Wherein, described lower casing is the uncovered box like structure in upper end, and each described positioning boss is all arranged on the bottom of described lower casing.
Wherein, described reference column is combined with the bottom ultra-sonic welded of described lower casing.
Wherein, the cross section of described reference column and described location hole is circular configuration.
After have employed technique scheme, the beneficial effects of the utility model are:
Because the utility model loud speaker module comprises module shell, loudspeaker monomer is contained in module shell, the side-wall outer side of the monomer shell of loudspeaker monomer is provided with multiple reference column, and module shell is provided with positioning boss, and positioning boss is provided with the location hole suitable with reference column.Being cooperatively interacted by reference column and location hole is fixed in module inner chamber by loudspeaker monomer, compared with the barricade of prior art, the location structure compact that reference column coordinates with location hole, take up room little, in the operatic tunes space achieving loudspeaker monomer X, Y-direction (i.e. horizontal direction) and saved to greatest extent while locating module, improve the acoustical behavior of module.
Because the lower surface of reference column is provided with ultrasound lines, reference column is combined by Ultrasonic welding processes with module shell.More clean easy to operate compared with the modes such as this kind of combination adds locating effect, enhances the firmness combined between loudspeaker monomer and module shell, simultaneously Ultrasonic welding processes, hot melt combination bonding with other gluing, simplify the packaging technology of module.
In sum, the utility model loud speaker module solves loudspeaker monomer location structure in prior art and to take up room large technical problem, and the monomer set bit architecture in the utility model loud speaker module is small and exquisite, takes up room little, module acoustical behavior is high, and module group assembling technique is simple to operation.
Accompanying drawing explanation
Fig. 1 is the stereo decomposing structural representation of the utility model loud speaker module;
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 planar structure schematic diagram of lower casing in Fig. 1;
Fig. 5 is the structural representation of loudspeaker monomer in Fig. 1;
In figure: 10, upper casing, 12, phonate hole, 20, lower casing, 22, positioning boss, 220, pedestal, 222, location hole, 30, loudspeaker monomer, 32, monomer protecgulum, 34, monomer shell, 340, reference column, 342, ultrasound lines, 360, vibrating diaphragm, 362, ball top, 364, voice coil loudspeaker voice coil, 380, magnetic conductive board, 382, internal magnet, 384, interior washer, 386, external magnet, 388, outer washer, 40a, foam, 40b, foam.
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 of the module shell related in this specification all refers to that it is arranged in the side of module inner chamber, and outside all refers to that it is positioned at the side outside module inner chamber.The inner side of the monomer shell related in this specification all refers to that it is arranged in the side of monomer inner chamber, and outside all refers to that it is positioned at the side outside monomer inner chamber.
As Fig. 1 and Fig. 2 jointly shown in, a kind of loud speaker module, is rectangular configuration, comprises module shell, and module shell comprises the upper casing 10 and lower casing 20 that combine, contains loudspeaker monomer 30 in the space that upper casing 10 and lower casing 20 surround.The foam 40a of ring-type is provided with between loudspeaker monomer 30 and upper casing 10, foam 40a plays the effect of the front operatic tunes of sealing and the rear operatic tunes, space between the face of speaking of foam 40a and loudspeaker monomer 30 and upper casing 10 is the front operatic tunes of module, and other space that upper casing 10 and lower casing 20 surround is the rear operatic tunes of module.Before corresponding on upper casing 10, the position of the operatic tunes is provided with phonate hole 12, the sound that loudspeaker monomer 30 sends by phonate hole 12 to module external radiation.Foam 40b is provided with between loudspeaker monomer 30 and lower casing 20.
As Fig. 1, Fig. 3, Fig. 4 and Fig. 5 jointly shown in, loudspeaker monomer 30 is also rectangular configuration, and it comprises the monomer protecgulum 32 and monomer shell 34 that combine, contains vibrational system and magnetic circuit system in the space that monomer protecgulum 32 and monomer shell 34 surround.The side-wall outer side of monomer shell 34 is provided with the centre position that four reference columns, 340, four reference columns 340 are separately positioned on four sidewalls of monomer shell 34.Four reference columns 340 are the column structure of the sidewall surfaces protruding monomer shell 34, and four reference columns 340 are all extended perpendicularly to the lower end of monomer shell 34 by the upper end of monomer shell 34 along the sidewall of monomer shell 34, the first half and the monomer shell 34 of reference column 340 are structure as a whole, and the lower surface of reference column 340 are equipped with the ultrasound lines 342 of taper.Lower casing 20 is the uncovered box like structure in upper end, be provided with in the bottom of lower casing 20 four respectively with the positioning boss 22 that four reference columns 340 are suitable, positioning boss 22 comprises the pedestal 220 of the arch bridge shape that keeps flat, the straight flange of pedestal 220 is arranged near loudspeaker monomer 30, and its arc-shaped edges is arranged away from loudspeaker monomer 30.On pedestal 220, the position of corresponding reference column 340 is vertically provided with columnar location hole 222, and the position that the corresponding reference column 340 of pedestal 220 is connected with monomer shell 34 is provided with opening, and opening vertically runs through pedestal 220.When loud speaker module group assembling, four reference columns 340 are inserted into respectively in four location holes 222, then by Ultrasonic welding processes, the bottom of reference column 340 with lower casing 20 is combined as a whole, be fixed on lower casing 20 by loudspeaker monomer 30, the location structure compact that this reference column combines with positioning boss, take up room little, while achieving loudspeaker monomer location, saved the operatic tunes space of module to greatest extent, improve the acoustical behavior of module.
As shown in Figure 3, the vibrational system of loudspeaker monomer comprises edge part and is fixed on vibrating diaphragm 360 between monomer protecgulum 32 and monomer shell 34, the middle part of vibrating diaphragm 360 is fixed with the ball top 362 to monomer protecgulum 32 projection, and vibrating diaphragm 360 is fixed with voice coil loudspeaker voice coil 364 near the side of magnetic circuit system.Magnetic circuit system comprises the magnetic conductive board 380 be fixed on monomer shell 34, centre position inside magnetic conductive board 380 is fixed with internal magnet 382 and interior washer 384 successively, marginal position inside magnetic conductive board 380 is fixed with external magnet 386 and outer washer 388 successively, and external magnet 386 and outer washer 388 are looped around the periphery of internal magnet 382 and interior washer 384.Internal magnet 382 and interior washer 384 form the internal magnetic circuit of loudspeaker monomer, and external magnet 386 and outer washer 388 form the external magnetic circuit of loudspeaker monomer, are provided with magnetic gap between internal magnetic circuit and external magnetic circuit, and the end of voice coil loudspeaker voice coil 364 is positioned at magnetic gap.Voice coil loudspeaker voice coil 364 does reciprocal moving up and down according to by the size and Orientation of the sound wave signal of telecommunication in its coiling in magnetic gap, and vibrating diaphragm 360 vibrates along with moving up and down of voice coil loudspeaker voice coil 364, instigates air sounding, thus completes the power conversion between electroacoustic.
As Fig. 3 and Fig. 5 jointly shown in, monomer shell 34 is the circulus of open at both ends, magnetic conductive board 380 is fixed on the open-mouth of monomer shell 34 lower end, and the outer surface of magnetic conductive board 380 flushes with the lower surface of monomer shell 34, effectively reduce the thickness of loudspeaker monomer, thus effectively reduce the thickness of loud speaker module.
As Fig. 4 and Fig. 5 jointly shown in, in the present embodiment, reference column 340 being designed to column structure is because the reference column of column structure is easy to process, take up room little, for preferred version of the present utility model, but the structure of reference column is not limited to column structure, as triangular prism, square column and other polygon post can realize the function of location.
As shown in Figure 5, four sides of the present embodiment loudspeaker monomer are respectively provided with a reference column 340, the X of loudspeaker monomer in module and the location of Y-direction can well be realized, the preferred version that four sides respectively establish the scheme of a reference column to be technical staff selected by the structure of loudspeaker monomer and loud speaker module and positioning requirements, in practical application, the quantity of reference column and present position are not limited to such scheme, technical staff can according to the structure of loudspeaker monomer and loud speaker module, and positioning requirements converts.
The present embodiment is only done detailed description for the loudspeaker monomer of rectangular configuration and module to scheme of the present utility model, but the utility model establishes reference column on monomer shell, the technical scheme of module shell being established the location structure suitable with reference column be used for saving module operatic tunes space is not limited in the module of this kind of structure, this technical scheme is applicable to any one monomer and establishes in chlamydate module, those skilled in the art do not need to pay any creative work according to the description of this specification and just can be applied in the module of other structure by the technical solution of the utility model, comprise circle, track type and other irregularly shaped isostructural module, therefore no matter other structure of module and monomer whether with describe in above-described embodiment the same, as long as establish reference column on monomer shell, module shell is established the location structure suitable with reference column, and be used for saving module operatic tunes space, the speaker product promoting module acoustical behavior 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.