CN217240922U

CN217240922U - Sound production module and electronic device

Info

Publication number: CN217240922U
Application number: CN202123451574.5U
Authority: CN
Inventors: 张锋; 赵国栋
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-08-19
Anticipated expiration: 2031-12-31

Abstract

The utility model discloses a sound production module and electron device, the sound production module includes: a sounding monomer; the casing, the casing is including preceding shell and the backshell of mutually supporting, preceding shell and backshell are injectd and are installed the free installation cavity of sound production, wherein, preceding shell includes metal part and plastic part, metal part and the integrative injection moulding of plastic part, plastic part includes supporting part and sound guide part, the supporting part is used for supporting the sound production monomer, the at least part of sound guide part is located the installation cavity and outside the sound guide part be equipped with the sound guide channel of installation cavity intercommunication, metal part includes just to the front shroud who sets up and by the side fascia that the front shroud buckled to the backshell and extends, the supporting part is fixed in the front shroud, the sealed cooperation of one end that the front shroud was kept away from to the backshell and side fascia. The utility model discloses acoustic performance has been optimized to the sound production module to do benefit to and realize that the product is miniaturized, frivolous design, have waterproof function simultaneously, improve water-proof effects, guarantee the normal use of sound production module, and have the advantage that structural design is reasonable.

Description

Sound production module and electronic device

Technical Field

The utility model relates to an electroacoustic technology field, in particular to sound production module and electron device.

Background

Sound producing modules, such as speaker boxes, are transducers that convert electrical signals into sound signals, and are widely used in electronic devices such as mobile phones, computers, and earphones. At present, a front shell and a rear shell of a loudspeaker box are mostly formed by injection molding, and the thickness of the front shell and the rear shell which are formed by injection molding is larger, so that the volume of an acoustic cavity can be reduced, and the acoustic performance of the loudspeaker is influenced.

In the correlation technique, for the acoustic cavity volume of increase speaker module, provided an all metal casing's speaker module, speaker module's last epitheca all adopts the metalwork, but above-mentioned structural design processing degree of difficulty is great, has the not good condition of sealed effect moreover to the waterproof performance of speaker product has been reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a sound production module and electron device aims at solving among the prior art technical problem such as speaker box acoustic performance is limited and be unfavorable for miniaturization, frivolous design.

In order to achieve the above object, the utility model provides a sound production module, the sound production module includes:

a sounding monomer;

the casing, the casing is including the preceding shell and the backshell of mutually supporting, preceding shell and backshell are injectd the installation the free installation cavity of sound production, wherein, preceding shell includes metal part and plastic part, metal part with the integrative injection moulding of plastic part, plastic part includes supporting part and sound guide part, the supporting part is used for supporting the sound production monomer, the at least part of sound guide part is located outside the installation cavity just sound guide part be equipped with the sound guide channel of installation cavity intercommunication, metal part include with the backshell is just to the front shroud who sets up and by the front shroud orientation the backshell buckles the side wall board that extends, the supporting part is fixed in the front shroud, the backshell with the side wall board is kept away from the sealed cooperation of one end of front shroud.

Preferably, a first glue coating groove is defined between the sounding single body and the supporting part, and a sealing glue is coated in the first glue coating groove.

Preferably, the supporting part orientation one side of backshell is to the sunken support step that forms of direction of front shroud, it has diapire and lateral wall to support the step, sound production monomer orientation one side of front shroud support in on the diapire, just sound production monomer's lateral wall with the diapire reaches enclose between the lateral wall first rubber coating groove.

Preferably, the side wall has a vertical section and an inclined section which are connected with each other, and the vertical section is vertically connected with the bottom wall; the slope section certainly vertical section orientation the direction of backshell extends, and the orientation is kept away from the free direction slope of sound production.

Preferably, the backshell is the metalwork, the backshell with welded fastening between the side bounding wall, the backshell with inject the second glue spreader between the side bounding wall, it has sealed glue to coat in the second glue spreader.

Preferably, the outer edge of the rear shell is bent towards one side of the front cover plate to form a first folded edge, and the first folded edge abuts against the inner side of the side enclosing plate and forms the second glue coating groove with the side enclosing plate.

Preferably, a clamping groove is formed in the edge of the end part, away from the front cover plate, of the side enclosing plate, a clamping strip is formed at the outer edge of the first folded edge, and the clamping strip is inserted into the clamping groove and is welded and fixed with the rear shell.

Preferably, the rear shell is provided with a mounting hole corresponding to the magnetic yoke of the sound generating unit, the magnetic yoke is mounted at the mounting hole and is in sealing fit with the rear shell, and the magnetic yoke is exposed out of the rear shell.

Preferably, the backshell is close to the position of mounting hole to one side bending type of front shroud forms the second hem, the second hem encloses into the mounting hole and with the butt joint of yoke outer fringe forms the third glue coating groove, and it has sealed glue to coat in the third glue coating groove.

Preferably, the edge of the front cover plate far away from the side enclosing plate forms a flanging turned towards the direction of the rear shell, and the flanging is embedded in the plastic part.

Preferably, the front cover plate is provided with at least two injection molding positioning holes located on the outer side of the plastic part, and the injection molding positioning holes are covered with plugging pieces.

Preferably, the installation cavity is internally provided with a filling cavity, and the injection molding positioning hole is communicated with the filling cavity so as to fill the filling cavity with sound absorption particles through the injection molding positioning hole.

Preferably, the sounding unit is obliquely arranged relative to the front cover plate, and along the flowing direction of the airflow, the distance between one side of the sounding unit, which is close to the front cover plate, and the front cover plate is increased.

The utility model discloses still provide an electron device, electron device include the shell and accept in the shell as above the sound production module.

The technical scheme of the utility model, preceding shell among the sound production module is by the integrative injection moulding of metal part and plastic portion, the metal part of preceding shell is owing to be the metalwork, shell before the plastic than having now, but metal part stamping forming, the processing degree of difficulty has been reduced, and its thickness is less, do not occupy the volume of installation cavity, optimize the acoustic performance of sound production module, and, metal part thickness is little then do benefit to the Z axle height that reduces whole sound production module, and then do benefit to and reduce complete machine Z axle height, realize the product miniaturization, frivolous design, can also increase the sound cavity volume of sound production module simultaneously, promote its acoustic performance. And, the sealed cooperation of side bounding wall and backshell among the sound production module, and metal portion and the integrative injection moulding of plastic portion can realize the effective sealed of installation cavity, have waterproof function, improve water-proof effects, guarantee the normal use of sound production module. In addition, but the plastic portion injection moulding of preceding shell can be according to the shape shaping of sound production monomer and other parts with plastic portion complex and go out complicated structure, and structural design is reasonable, easily shaping.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is an exploded view of a sound module according to an embodiment of the present invention;

fig. 2 is a schematic cross-sectional view of a sound module according to an embodiment of the present invention;

fig. 3 is a schematic partial enlarged cross-sectional view of a sound module according to an embodiment of the present invention;

fig. 4 is a schematic structural view of a front shell in the sound module according to an embodiment of the present invention.

The reference numbers illustrate:

the realization, the functional characteristics and the advantages of the utility model are further explained by combining the embodiment and referring to the attached drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a sounding module 100.

As shown in fig. 1 to 4, the sound generating module 100 includes a sound generating unit 10 and a housing 20, the housing 20 includes a front shell 21 and a rear shell 22 that are matched with each other, the front shell 21 and the rear shell 22 define a mounting chamber 23 for mounting the sound generating unit 10, wherein the front shell 21 includes a metal portion 211 and a plastic portion 212, the metal portion 211 and the plastic portion 212 are integrally injection-molded, the plastic portion 212 includes a support portion 2121 and a sound guide portion 2122, the support portion 2121 is used for supporting the sound generating unit 10, at least a portion of the sound guide portion 2122 is located outside the mounting chamber 23, the sound guide portion 2122 is provided with a sound guide channel 2123 communicated with the mounting chamber 23, the metal portion 211 includes a front cover plate 2111 facing the rear shell 22 and a side cover plate 2112 bent and extending from the front cover plate 2111 toward the rear shell 22, the support portion 2121 is fixed to the front cover plate 2111, and the rear shell 22 and an end of the side cover plate 2112 away from the front cover plate 2111 are in sealing fit.

The utility model discloses sound production module 100 can be applied to electronic device, for example in cell-phone, computer, earphone, sound production module 100 can be the speaker box, and sound production monomer 10 of sound production module 100 is the speaker monomer, and this embodiment sound production module 100 explains with the speaker box who is applied to in the cell-phone as an example.

Specifically, as shown in fig. 1 to 3, the front case 21 and the rear case 22 are arranged in the front-rear direction, the front case 21 and the rear case 22 define the mounting chamber 23, wherein the front case 21 is integrally injection-molded by the metal part 211 and the plastic part 212, the plastic part 212 includes a support part 2121 and a sound guide part 2122, and the sound-emitting unit 10 is supported on the support part 2121, so that the assembly between the sound-emitting unit 10 and the front case 21 is realized. The metal part 211 includes a front cover plate 2111 and side plates 2112, wherein the front cover plate 2111 faces the rear shell 22, the side plates 2112 are formed by bending and extending from the front cover plate 2111 toward the rear shell 22, and one end of the side plates 2112 away from the front cover plate 2111, that is, the rear end of the side plates 2112 is in sealing fit with the rear shell 22, so as to realize the sealing of the installation chamber 23. In addition, the plastic part 212 is provided with an opening 2125 opposite to the diaphragm 12 of the sound generating unit 10, the opening 2125 is provided with a magnetic isolation plate 30, and the opening 2125 is blocked by the magnetic isolation plate 30 and sealed with the plastic part 212 by gluing. It is understood that the mounting chamber 23 is divided into a front chamber 231 and a rear chamber 232, wherein the front chamber 231 is surrounded by the magnetic shield 30, the sound generating unit 10 and the support portion 2121, and the sound guide passage 2123 of the sound guide portion 2122 communicates with the front chamber 231 to realize normal sound generation. The rear cavity 232 is surrounded by the metal part 211, the support part 2121, the sound generating unit 10, and the rear case 22.

Preceding shell 21 in this embodiment sound production module 100 is by metal part 211 and the integrative injection moulding of plastic part 212, the metal part 211 of preceding shell 21 is owing to be the metalwork, shell 21 before the plastic of current, but metal part 211 stamping forming, the processing degree of difficulty has been reduced, and its thickness is less, do not occupy the volume of installation cavity 23, optimize the acoustic performance of sound production module 100, and, metal part 211 thickness is little then do benefit to the Z axle height that reduces whole sound production module 100, and then do benefit to and reduce complete machine Z axle height, realize the product miniaturization, the frivolousization design, the sound cavity volume of sound production module 100 can also be increased simultaneously, promote its acoustic performance. Moreover, the side wall plate 2112 is in sealing fit with the rear shell 22 in the sound module 100, and the metal part 211 and the plastic part 212 are integrally formed by injection molding, so that the mounting cavity 23 can be effectively sealed, the waterproof function is realized, the waterproof effect is improved, and the normal use of the sound module 100 is ensured. In addition, the plastic part 212 of the front housing 21 can be injection molded, and a complex structure can be molded according to the shapes of the sounding single body 10 and other parts matched with the plastic part 212, so that the structure design is reasonable and the molding is easy.

In one embodiment, as shown in fig. 2 and 3, a first glue coating groove 40 is defined between the sounding single body 10 and the support portion 2121, a sealant is coated in the first glue coating groove 40, and the sealant is coated in the first glue coating groove 40 to adhere and seal the sounding single body 10 and the support portion 2121, so that the sealing reliability of the sounding module 100 is improved, and the waterproof grade is improved.

Specifically, the supporting portion 2121 is recessed towards the front cover plate 2111 from one side of the rear housing 22 to form a supporting step 2124, the supporting step 2124 has a bottom wall 21241 and a side wall 21242, the side of the sound generating unit 10 facing the front cover plate 2111 is supported on the bottom wall 21241, and a first glue coating groove 40 is defined between the side wall 21242 of the sound generating unit 10 and the bottom wall 21241 and the side wall 21242.

As shown in fig. 2 and 3, the rear side of the supporting portion 2121 is recessed forward to form a supporting step 2124, and the supporting step 2124 has a bottom wall 21241 and a side wall 21242, wherein the front side of the sound generating unit 10 can be supported on the bottom wall 21241, and the side wall 21242 of the sound generating unit 10 and the bottom wall 21241 and the side wall 21242 of the supporting step 2124 enclose a first glue coating 40, so that the assembly and the sealing of the sound generating unit 10 and the front housing 21 are realized by coating a sealant in the first glue coating 40. The supporting step 2124 is arranged on the supporting portion 2121, so that the first glue coating groove 40 is formed by enclosing the sounding monomer 10 and the supporting step 2124, the sealing performance between the sounding monomer 10 and the supporting portion 2121 is guaranteed while the sounding monomer 10 is supported, and the structural design is ingenious and reasonable.

Further, the side wall 21242 has an interconnected vertical section 21243 and an inclined section 21244, the vertical section 21243 being connected perpendicularly to the bottom wall 21241; the inclined section 21244 extends from the vertical section 21243 toward the rear case 22 and is inclined away from the sounding unit 10. Vertical section 21243 is connected in the place ahead of slope section 21244, slope section 21244 extends backward from the rear end of vertical section 21243, and the orientation slope of keeping away from sound production monomer 10, promptly, slope section 21244 sets up from going to the back external inclination, make the distance between slope section 21244 and the sound production monomer 10 enlarge after going forward gradually, and then make first rubber coating groove 40 in slope section 21244 department from going forward the back enlarge gradually, not only do benefit to assembly sound production monomer 10, do benefit to again to rubber coating in the first rubber coating groove 40.

In one embodiment, the rear shell 22 is a metal member, the rear shell 22 and the side panels 2112 are welded and fixed, a second glue coating groove 50 is defined between the rear shell 22 and the side panels 2112, and a sealant is coated in the second glue coating groove 50. Backshell 22 is the metalwork, but stamping forming, and than current plastic backshell 22, but backshell 22 stamping forming has reduced the processing degree of difficulty, and its thickness attenuate can increase sound production module 100's back chamber 232 volume, promotes sound production module 100's low frequency performance. Moreover, the thickness reduction of the rear shell 22 is beneficial to reducing the Z-axis height of the whole sounding module 100, and is further beneficial to reducing the Z-axis height of the whole sounding module, so that the miniaturization and light and thin design of the product is realized. In addition, the rear shell 22 and the side wall plates 2112 are welded and fixed, so that the stability of assembling the rear shell 22 and the front shell 21 is improved, a second glue coating groove 50 is defined between the rear shell 22 and the side wall plates 2112, and sealant is coated in the second glue coating groove 50, so that sealing is realized, and the sealing performance of the shell 20 in the sounding module 100 is improved.

Specifically, the outer edge of the rear shell 22 is bent toward one side of the front cover plate 2111 to form a first folded edge 221, and the first folded edge 221 abuts against the inner side of the side cover plate 2112 and forms a second glue applying groove 50 with the side cover plate 2112. As shown in fig. 1 to 4, the outer edge of the rear shell 22 is bent forward to form a first folded edge 221, the first folded edge 221 abuts against the inner side of the side gusset plate 2112, and the rear end of the side gusset plate 2112 is higher than the first folded edge 221, so that a second glue coating groove 50 is defined between the first folded edge 221 and the first folded edge 221, and sealant is coated in the second glue coating groove 50 to seal the side gusset plate 2112 and the first folded edge 221, thereby sealing the shell 20. Moreover, the second glue coating groove 50 is positioned outside the installation cavity 23, so that the volume of the installation cavity 23 is not occupied, and the acoustic performance of the acoustic module 100 is optimized.

Further, a slot 2113 is formed at an end edge of the side gusset 2112 facing away from the front gusset 2111, a strip 2211 is formed at an outer edge of the first folded edge 221, and the strip 2211 is inserted into the slot 2113 and is welded and fixed to the rear housing 22. As shown in fig. 1, a plurality of slots 2113 are formed at the edge of the rear end of the side gusset 2112, a plurality of locking strips 2211 are formed at the outer edge of the first folded edge 221, the number of the locking strips 2211 is the same as that of the slots 2113, and the locking strips 2211 are inserted into the slots 2113 in a one-to-one correspondence manner, so that the accurate positioning between the side gusset 2112 and the rear shell 22 is conveniently realized, and after the locking strips 2211 are inserted into the slots 2113, the slots of the locking strips 2211 and the slots 2113 are welded at the slots 2113, so as to realize the stable assembly of the front shell 21 and the rear shell 22.

In an embodiment, a mounting hole 225 is formed in the position of the rear shell 22 corresponding to the yoke 11 of the sound generating unit 10, the yoke 11 is mounted at the mounting hole 225 and is in sealing fit with the rear shell 22, and the yoke 11 is exposed out of the rear shell 22. As shown in fig. 1 to 3, the rear portion of the sounding single body 10 has a yoke 11, a mounting hole 225 is formed in a position of the rear shell 22 corresponding to the yoke 11, the yoke 11 is mounted in the mounting hole 225 and is in sealing fit with the rear shell 22, so as to ensure the sealing performance of the mounting cavity 23, and meanwhile, the yoke 11 is exposed out of the rear shell 22. In a manner that the mounting hole 225 is formed in the rear shell 22 and the magnetic yoke 11 is exposed out of the rear shell 22, the rear shell 22 is designed to be hollowed out at the mounting hole 225, the thickness of the rear shell 22 at the mounting hole 225 is omitted, the Z-axis height of the sound module 100 is further reduced, the Z-axis height of the whole machine is reduced, and the design of microminiaturization and ultra-thinning of a product is realized. The utility model discloses a sound production module 100, thickness are 0.15mm ~ 0.2mm, compare in the sound production module 100 of current adoption plastic casing 20, the utility model discloses sound production module 100's thickness attenuate more than 0.3 mm.

In one embodiment, the back shell 22 is bent toward one side of the front cover plate 2111 at a position close to the mounting hole 225 to form a second folded edge 222, the second folded edge 222 surrounds the mounting hole 225 and is abutted against the outer edge of the magnetic yoke 11 to form a third glue coating groove 60, and a sealant is coated in the third glue coating groove 60.

As shown in fig. 2 and 3, the second folded edge 222 is formed by bending the rear shell 22 forward, the second folded edge 222 encloses a mounting hole 225, the magnetic yoke 11 is mounted at the mounting hole 225, the second folded edge 222 is abutted with the outer edge of the magnetic yoke 11 to form a third glue coating groove 60, and a sealant is coated in the third glue coating groove 60, so that the sealing between the sounding unit 10 and the rear shell 22 is realized, and the reliability of the waterproof function of the sounding module 100 is ensured.

In one embodiment, the edge of the front shroud 2111 distal from the side gusset 2112 forms a flange 2114 folded toward the rear housing 22, the flange 2114 being embedded in the plastic portion 212. As shown in fig. 2 and 3, the edge of the front cover plate 2111, which forms the opening 2125, is turned backwards to form a flange 2114, and the flange 2114 is embedded in the plastic part 212, so that the metal part 211 and the plastic part 212 are integrally molded, and the structural stability of the front housing 21 is improved.

In an embodiment, the front cover plate 2111 is provided with at least two injection positioning holes 2115 located at the outer side of the plastic portion 212, and the injection positioning holes 2115 are covered with blocking sheets 2116. As shown in fig. 1, 2 and 4, the number of the injection molding positioning holes 2115 is two, the two injection molding positioning holes 2115 are disposed at an interval outside the plastic part 212, and the injection molding positioning holes 2115 are favorable for accurate positioning when the metal part 211 and the plastic part 212 are injection molded, so as to improve the structural stability of the front housing 21.

Further, a filling cavity is arranged in the installation cavity 23, and the injection molding positioning hole 2115 is communicated with the filling cavity so as to fill the sound absorption particles into the filling cavity through the injection molding positioning hole 2115. It can be understood that the filling cavity is the rear cavity 232, the injection molding positioning hole 2115 is communicated with the rear cavity 232, and the sound absorption particles can be filled into the filling cavity through the injection molding positioning hole 2115, so that low-frequency distortion can be reduced by the sound absorption particles, and the acoustic performance of the sound production module 100 is improved. The injection molding positioning hole 2115 has the functions of positioning and filling sound absorption particles, so that the multifunctional design is realized, and the structural design is ingenious and reasonable.

In addition, the rear shell 22 is provided with a filling hole 223 for filling sound-absorbing particles, a filling sheet 224 is covered at the filling hole 223, and the filling hole 223 is sealed by the filling sheet 224. The filling hole 223 is opened on the rear shell 22, and the filling hole 223 can be used for filling the sound-absorbing particles into the rear cavity 232, which is simple and convenient. Moreover, the filling sheet 224 seals the filling hole 223, so that the sound absorption particles are prevented from leaking, and meanwhile, the sealing performance of the rear cavity 232 can be ensured. The front cover plate 2111 is further provided with a damping hole 2117 communicated with the rear cavity 232, a damping sheet 2118 is covered at the position of the damping hole 2117, the damping sheet 2118 seals the damping hole 2117, the rear cavity 232 is integrally designed in a closed type and is communicated with the outside only through the damping hole 2117, the fact that the air pressure in the rear cavity 232 is the same as that in the front cavity 231 is guaranteed, the acoustic performance of the sound production module 100 is improved, the damping sheet 2118 covers the position of the damping hole 2117, the damping effect is achieved, and noise is reduced.

In one embodiment, the sound generating unit 10 is disposed obliquely with respect to the front cover plate 2111, and the distance between the side of the sound generating unit 10 close to the front cover plate 2111 and the front cover plate 2111 increases in the flow direction of the air flow. As shown in fig. 2 and 3, the airflow flows from the front cavity 231 into the sound guide channel 2123, and the distance between the front side of the sounding unit 10 and the front cover plate 2111 gradually increases along the flow direction of the airflow, that is, the volume of the front cavity 231 gradually increases along the flow direction of the airflow, so that the flow resistance of the airflow can be reduced, the airflow can smoothly flow into the sound guide channel 2123, and the acoustic performance of the sounding module 100 is optimized. Moreover, the sound guide portion 2122 is located at the side portion of the mounting chamber 23, so that the sound emitting module 100 emits sound at the side portion, and the sound emitting module 100 is conveniently applied to electronic devices such as mobile phones and the like which have a small thickness and require sound at the side portion.

It should be noted that, as shown in fig. 1, the sounding unit 10 is conducted with an external device through the circuit board 70, the side wall plate 2112 is provided with a notch for the circuit board 70 to pass through, and the circuit board 70, the side wall plate 2112 and the rear shell 22 are hermetically connected. The circuit board 70 realizes the conduction of the sounding monomer 10 and external devices, realizes the normal operation of the sounding module 100, and the circuit board 70 is hermetically connected with the side wall plates 2112 and the rear shell 22, so that the sealing performance of the installation cavity 23 is ensured.

The utility model discloses in the sound production module 100, the metal portion 211 of backshell 22 and preceding shell 21 can be the stainless steel finished piece, has easily draw materials and shaping and rust-resistant advantage of losing. The blocking sheet 2116 and the filling sheet 224 can be made of PET (polyester resin), so that the manufacture is convenient, and the packaging reliability can be ensured. The magnetic isolation plate 30 can be made of SPCC (cold rolled carbon steel sheet and steel strip generally), has magnetic isolation function, and realizes the whole machine magnetic isolation function.

The utility model also provides an electronic device, electronic device include the shell and accept foretell sound production module 100 in the shell. The electronic device can be a mobile phone, a computer, an earphone, etc. The specific structure of the sound module 100 in the electronic device refers to the above embodiments, and since the electronic device adopts all the technical solutions of all the embodiments, at least all the beneficial effects brought by the technical solutions of the embodiments are achieved, and no further description is given here.

The above is only the preferred embodiment of the present invention, not so limiting the patent scope of the present invention, all of which are in the utility model discloses a conceive, utilize the equivalent structure transform that the content of the specification and the attached drawings did, or directly/indirectly use all to include in other relevant technical fields the patent protection scope of the present invention.

Claims

1. The utility model provides a sound production module, its characterized in that, sound production module includes:

a sounding monomer;

2. The sound generating module as claimed in claim 1, wherein a first glue groove is defined between the sound generating unit and the support portion, and a sealant is coated in the first glue groove.

3. The sound generating module according to claim 2, wherein the supporting portion is recessed toward the front cover plate to form a supporting step, the supporting step has a bottom wall and a side wall, the sound generating unit is supported on the bottom wall toward the front cover plate, and the side wall of the sound generating unit, the bottom wall and the side wall enclose the first glue-coated groove.

4. The sound generation module of claim 3, wherein the side wall has an interconnected vertical section and an angled section, the vertical section being connected perpendicularly to the bottom wall; the inclined section extends towards the direction of the rear shell from the vertical section, and inclines towards the direction far away from the sounding monomer.

5. The acoustic module of claim 1 wherein the rear housing is a metal member, the rear housing is welded to the side wall, a second glue groove is defined between the rear housing and the side wall, and a sealant is coated in the second glue groove.

6. The sound production module of claim 5, wherein the outer edge of the rear housing is bent toward one side of the front cover plate to form a first folded edge, and the first folded edge abuts against the inner side of the side enclosing plate and forms the second glue coating groove with the side enclosing plate.

7. The sound production module as claimed in claim 6, wherein a locking groove is formed on an edge of an end of the side enclosing plate facing away from the front cover plate, and a locking strip is formed on an outer edge of the first folded edge and inserted into the locking groove and fixed to the rear shell by welding.

8. The sound generating module of claim 1, wherein the back shell has a mounting hole corresponding to the yoke of the sound generating unit, the yoke is mounted at the mounting hole and is in sealing engagement with the back shell, and the yoke is exposed from the back shell.

9. The acoustic module of claim 8, wherein the rear housing is bent toward one side of the front cover plate at a position close to the mounting hole to form a second folded edge, the second folded edge encloses the mounting hole and is abutted against the outer edge of the magnetic yoke to form a third glue-coated groove, and a sealant is coated in the third glue-coated groove.

10. The sound production module of any one of claims 1 to 9, wherein the edge of the front cover plate away from the side coaming forms a flange folded towards the direction of the rear shell, and the flange is embedded in the plastic part.

11. The sound generating module as claimed in any one of claims 1 to 9, wherein the front cover plate defines at least two injection positioning holes located outside the plastic portion, and the injection positioning holes are covered with a sealing sheet.

12. The sound generating module of claim 11, wherein a filling cavity is disposed in the mounting cavity, and the injection positioning hole communicates with the filling cavity to fill the filling cavity with sound-absorbing particles through the injection positioning hole.

13. The sound generating module according to any one of claims 1 to 9, wherein the sound generating unit is disposed obliquely with respect to the front cover plate, and a distance between a side of the sound generating unit close to the front cover plate and the front cover plate increases along a flowing direction of the air flow.

14. An electronic device, comprising a housing and the sound module as claimed in any one of claims 1 to 13 accommodated in the housing.