CN113115184A

CN113115184A - Loudspeaker module

Info

Publication number: CN113115184A
Application number: CN202110399003.7A
Authority: CN
Inventors: 林嘉平; 董庆宾; 张俊利
Original assignee: Yiyang Xinwei Acoustic Technology Co Ltd
Current assignee: Yiyang Xinwei Acoustic Technology Co Ltd
Priority date: 2021-04-12
Filing date: 2021-04-12
Publication date: 2021-07-13
Anticipated expiration: 2041-04-12
Also published as: CN113115184B

Abstract

The invention discloses a loudspeaker module, which comprises a module shell and a loudspeaker monomer arranged in the module shell, wherein the loudspeaker monomer comprises a basin frame, a voice coil, a magnetic cover and a supporting component, the magnetic cover and the supporting component are respectively arranged on the basin frame, the voice coil is connected with the supporting component, the magnetic cover is provided with an avoiding notch arranged corresponding to the supporting component, the avoiding notch is communicated with at least one wall surface of the magnetic cover, a window is arranged on the first surface of the module shell, a connecting part is arranged in the window, a window for exposing the magnetic cover is arranged on the connecting part, a side groove is arranged on the exposed surface of the magnetic cover, the inner edge of the connecting part is positioned in the side groove, a gap between the inner wall surface of the window and the vertical surface of the side groove is filled by sealant, and the vertical distance between the first surface of the connecting part, which is opposite to the supporting component, and. The position that the magnetic shield corresponds the supporting component is equipped with dodges the breach for the connecting portion on the module shell is reached to the biggest stroke of supporting component, makes the speaker module can realize big amplitude.

Description

Loudspeaker module

Technical Field

The invention relates to the technical field of electroacoustic transducers, in particular to a loudspeaker module.

Background

The speaker module is an important acoustic component in portable electronic equipment, and along with the development of technology, people are more and more high to the requirement of the acoustic performance of speaker module, and by this influence, big amplitude speaker module is spreading out fast.

Usually, use the supporting component to restrain the voice coil polarization in big amplitude speaker monomer to this reaches the effect that promotes the amplitude, and in some speaker monomers, the supporting component can be fixed in the lower extreme of voice coil loudspeaker voice coil, and this can occupy the vibration space of voice coil loudspeaker voice coil below, leads to its inside supporting component of speaker monomer during operation to collide with the magnetism cover easily.

In order to solve the above problem, in the prior art, the magnetic shield is designed with a blank pressing structure corresponding to the projection plane of the support component, the blank pressing structure is formed by stamping, and the blank pressing can increase the distance between the support component and the magnetic shield, thereby improving the bad collision phenomenon. However, because the magnetic shield is an exposed part of the speaker unit, in order to prevent falling and deformation, the requirement on material hardness of the magnetic shield is high, the requirement on material hardness is high, the existing production process capability is problematic, and the blank pressing depth of the magnetic shield is limited, that is, the existing speaker unit cannot realize large amplitude well in the speaker module.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: a large amplitude speaker module is provided.

In order to solve the technical problems, the invention adopts the technical scheme that: a loudspeaker module comprises a module shell and a loudspeaker monomer arranged in the module shell, the loudspeaker unit comprises a basin frame, a voice coil, a magnetic cover and a supporting component, wherein the magnetic cover and the supporting component are respectively arranged on the basin frame, the voice coil is connected with the supporting component, the magnetic cover is provided with an avoiding gap corresponding to the supporting component, the avoiding gap is communicated with at least one wall surface of the magnetic cover, the first surface of the module shell is provided with a window, a connecting part is arranged in the window, a window for exposing the magnetic cover is arranged on the connecting part, the edge of the exposed surface of the magnetic cover is provided with an edge groove, the inner edge of the connecting part is positioned in the edge groove, the gap between the inner wall surface of the window and the vertical surface of the side groove is filled with sealant, and the distance between the first surface of the connecting part, which is right opposite to the supporting component, and the basin frame in the vertical direction is larger than the distance between the magnetic cover and the basin frame in the vertical direction.

The invention has the beneficial effects that: be different from prior art magnetic shield and correspond the structure that supporting component set up the blank pressing, among this speaker module, the position that the magnetic shield corresponds supporting component is equipped with dodges the breach to make the connecting portion on the module shell of the biggest stroke of supporting component direct and can not bump with the magnetic shield, increased the vibration space of voice coil loudspeaker voice coil effectively, thereby make speaker module can realize bigger amplitude. In addition, set up the windowing on the module shell and set up the connecting portion that have the window that supplies the magnetism cover to expose in the windowing, not only can further increase the vibration space of voice coil loudspeaker voice coil, but also can make the speaker module more frivolous for the speaker module can be applicable to more and more frivolous portable electronic equipment. And the setting in magnetic shield limit groove not only makes things convenient for module shell and speaker monomer when equipment location, but also can prevent sealed glue to get into inside the speaker monomer, does benefit to the yields and the uniformity of guaranteeing the speaker module.

Drawings

Fig. 1 is a schematic structural diagram of an overall structure of a speaker module according to a first embodiment of the present invention;

fig. 2 is an exploded view of a speaker module according to a first embodiment of the present invention;

fig. 3 is a cross-sectional view of a speaker module according to a first embodiment of the invention;

FIG. 4 is an enlarged view of detail A in FIG. 3;

fig. 5 is a top view of a magnetic cover in a speaker module according to a second embodiment of the invention.

Description of reference numerals:

1. a basin stand;

2. a magnetic shield; 21. avoiding the notch; 22. exposing the noodles; 23. a side groove; 231. a vertical plane;

3. a support assembly;

4. a voice coil;

5. a module housing; 51. a first surface; 52. windowing; 53. a second surface; 54. a module upper shell; 55. a module lower shell; 56. an arc-shaped surface;

6. a connecting portion; 61. a window; 62. a first side; 63. a second face; 64. a glue grasping part; 65. a home part; 66. a transition section; 661. a flush portion; 662. a descending section;

7. sealing glue; 71. a filling section; 72. an exposed portion.

Detailed Description

In order to explain technical contents, achieved objects, and effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.

Referring to fig. 1 to 5, a speaker module includes a module housing 5 and a speaker unit disposed in the module housing 5, the speaker unit includes a frame 1, a voice coil 4, a magnetic shield 2 and a support member 3, the magnetic shield 2 and the support member 3 are respectively disposed on the frame 1, the voice coil 4 is connected to the support member 3, the magnetic shield 2 has an avoiding gap 21 disposed corresponding to the support member 3, the avoiding gap 21 is communicated with at least one wall surface of the magnetic shield 2, a first surface 51 of the module housing 5 is provided with a window 52, a connecting portion 6 is disposed in the window 52, the connecting portion 6 is provided with a window 61 for exposing the magnetic shield 2, an edge of an exposed surface 22 of the magnetic shield 2 is provided with a side groove 23, an inner edge of the connecting portion 6 is disposed in the side groove 23, a gap between an inner wall surface of the window 61 and a vertical surface 231 of the side groove 23 is filled with a sealant 7, the distance between the first surface 62 of the connecting part 6, which is opposite to the supporting component 3, and the basin stand 1 in the vertical direction is larger than the distance between the magnetic cover 2 and the basin stand 1 in the vertical direction.

From the above description, the beneficial effects of the present invention are: in the speaker module, the magnetic shield 2 sets up the dodge breach 21 that the top and the bottom link up corresponding to the region of supporting component 3, avoids supporting component 3 to collide magnetic shield 2 at the during operation effectively, does benefit to the amplitude of increase speaker module. And set up windowing 52 on module shell 5 and set up the connecting portion 6 that has the window 61 that supplies magnetism cover 2 to expose in windowing 52, not only can further increase the vibration space of voice coil loudspeaker voice coil 4, but also can make the speaker module more frivolous for the speaker module can be applicable to more and more frivolous portable electronic equipment. And the setting in magnetic shield limit groove not only makes things convenient for module shell and speaker monomer when equipment location, but also can prevent sealed glue to get into inside the speaker monomer, does benefit to the yields and the uniformity of guaranteeing the speaker module.

Further, the distance between the second surface 63 of the connecting part 6 opposite to the first surface 62 and the frame 1 in the vertical direction is smaller than the distance between the first surface 51 and the frame 1 in the vertical direction.

As can be seen from the above description, a part of the area avoiding the notch 21 can be used as a moving space of the supporting component 3, which is beneficial to further increase the amplitude of the speaker module.

Further, the exposed surface 22 of the magnetic cover 2 is not protruded from the first surface 51 in the window 52.

As can be seen from the above description, the window 52 of the module housing 5 can protect the magnetic shield 2, so as to effectively prevent the magnetic shield 2 from being impacted from the side, thereby facilitating the structural stability of the speaker module and prolonging the service life of the speaker module.

Further, the sealant 7 is not disposed to protrude from the first surface 51 in the window 52.

As can be seen from the above description, the opening 52 of the module housing 5 can protect the sealant 7, so as to effectively prevent the sealant 7 from separating from the gap due to lateral impact to affect the sealing performance of the speaker module, and thus, the working stability of the speaker module is ensured. Moreover, the sealant 7 is not disposed on the first surface 51 in the opening 52, so that the adverse effect of the sealant 7 on the assembly of the speaker module and external members (such as the housing of the portable electronic device) can be avoided.

Further, the whole sealant 7 is annular, the sealant 7 includes a filling portion 71 filled in the gap and an exposed portion 72 exposed from the module housing 5, the filling portion 71 is connected to the exposed portion 72, and the exposed portion 72 is not protruded from the first surface 51 in the opening 52.

As can be seen from the above description, the sealant 7 can seal the gap between the magnetic cover 2 and the connecting portion 6 well.

Further, an inner wall surface of the module housing 5 opposite to the first surface 51 is a second surface 53, and the first surface 62 is correspondingly located between the first surface 51 and the second surface 53.

As can be seen from the above description, the partial area of the window 52 (i.e. the partial area of the module housing 5) can also be used as the active area of the support component 3, which further increases the vibration space of the voice coil 4, so that the speaker module can achieve larger amplitude.

Further, the second face 63 is flush with the exposed face 22 of the magnetic cover 2.

It can be known from the above description that the second face 63 with the work of sealed glue 7 can conveniently be scribbled in the setting of the exposed surface 22 parallel and level of magnetism cover 2, and the rubber coating personnel can see more directly perceivedly whether sealed perfect in clearance, reduce the probability of speaker module sealing failure.

Further, the module housing 5 comprises a module upper shell 54 and a module lower shell 55 which are connected, the window 52 is arranged on the module lower shell 55, and the connecting part 6 and the module lower shell 55 are of an integrated structure.

As can be seen from the above description, the integrated connecting portion 6 and the module lower case 55 can facilitate the manufacturing of the speaker module, and reduce the time consumption of assembling the speaker module.

Further, the connecting portion 6 and the module lower case 55 are an integral structure formed by one-time injection molding, an integral structure formed by two-color injection molding or an integral structure formed by insert injection molding.

As can be seen from the above description, the integrated connecting portion 6 and the module lower case 55 can be formed in various ways, and can be selected by the manufacturer as required. In addition, the connecting portion 6 may be made of hard materials, including but not limited to stainless steel, iron sheet, hard plastic, etc., so as to enhance the overall strength of the speaker housing.

Further, the shape of the window 61 is adapted to the outer contour of the magnetic shield 2.

As can be seen from the above description, the window 61 is suitable in shape and size, which is beneficial to enhancing the overall structural strength of the speaker module.

Example one

Referring to fig. 1 to 4, a first embodiment of the present invention is: a speaker module can be used in portable electronic equipment such as mobile phones and tablet computers.

Referring to fig. 1 and 2, the speaker module includes a module housing 5 and a speaker unit disposed in the module housing 5, the speaker unit includes a frame 1, a magnetic circuit assembly, a vibration assembly and a support assembly 3, the magnetic circuit assembly and the vibration assembly are respectively disposed on the frame 1, a magnetic gap is formed on the magnetic circuit assembly, the magnetic circuit assembly includes a magnetic shield 2, a magnetic steel assembly disposed on the magnetic shield 2 and a washer assembly disposed on the magnetic steel assembly, wherein a part of the washer assembly can be directly connected to the frame 1 and cover a part of the magnetic steel assembly of the connection portion 6, that is, the frame 1 can be directly connected to the magnetic shield 2 or indirectly connected to the magnetic shield 2 through the washer assembly and the magnetic steel assembly; the vibration assembly comprises a vibrating diaphragm assembly and a voice coil 4 arranged on the vibrating diaphragm assembly, and one end of the voice coil 4 far away from the vibrating diaphragm assembly extends into the magnetic gap; the support component 3 is connected with the voice coil 4 and the basin frame 1, optionally, the connection surface of the support component 3 and the voice coil 4 is located on the end surface of one end of the voice coil 4 far away from the diaphragm component. The support member 3 comprises a secondary membrane and/or a centering disk.

Please refer to fig. 2 and 4, the magnetic cover 2 has an avoidance gap 21 corresponding to the support component 3, the avoidance gap 21 penetrates through the top surface and the bottom surface of the magnetic cover 2, the first surface 51 of the module housing 5 is provided with a window 52, a connection portion 6 is arranged in the window 52, the connection portion 6 is provided with a window 61 for exposing the magnetic cover 2, the edge of the exposed surface 22 of the magnetic cover 2 is provided with a side groove 23, the inner edge of the connection portion 6 is located in the side groove 23, a gap between the inner wall surface of the window 61 and the vertical surface 231 of the side groove 23 is filled with a sealant 7, and the distance between the connection portion 6 and the first surface 62 of the support component 3 and the basin frame 1 in the vertical direction is greater than the distance between the magnetic cover 2 and the basin frame 1 in the vertical direction.

As shown in fig. 2, the magnetic shield 2 is rectangular, and the avoiding notch 21 is communicated with at least one wall surface of the magnetic shield 2, so that the processing difficulty of the magnetic shield 2 can be reduced and the processing consumables of the magnetic shield 2 can be saved. In detail, when the joints of the support assembly 3 and the voice coil 4 are located at four corners of the voice coil 4, the avoidance notches 21 preferably communicate with two adjacent wall surfaces of the magnetic shield 2, that is, the magnetic shield 2 is approximately cross-shaped as a whole; when the connection position of the support component 3 and the voice coil 4 is located on the long side and/or the short side of the voice coil 4, the avoiding notch 21 is communicated with the corresponding wall surface of the magnetic shield 2, at this time, the magnetic shield 2 is approximate to an i-shaped shape or other shapes as a whole, and the specific contour shape of the magnetic shield 2 is determined according to the position of the support component 3 on the voice coil 4.

As shown in fig. 4, to ensure that the connecting portion 6 does not protrude from the first surface 51, a distance between a second surface 63 of the connecting portion 6 opposite to the first surface 62 and the frame 1 in the vertical direction is smaller than a distance between the first surface 51 and the frame 1 in the vertical direction. Preferably, the second face 63 is flush with the exposed face 22 of the magnetic shield 2. It will be readily appreciated that it is also possible for the exposed face 22 of the magnetic shield 2 to be slightly concave or convex relative to the second face 63, which also reduces the accuracy requirements for assembly of the loudspeaker module.

The exposed surface 22 of the magnetic cover 2 is not protruded from the first surface 51 in the window 52.

Referring to fig. 2 and 4, the sealant 7 is not disposed on the first surface 51 in the window 52. Specifically, the whole sealant 7 is annular, the sealant 7 includes a filling portion 71 filled in the gap and an exposed portion 72 exposed from the module housing 5, the filling portion 71 is connected to the exposed portion 72, and the exposed portion 72 is not protruded from the first surface 51 in the opening 52.

In order to further increase the amplitude of the speaker module, the inner wall surface of the module housing 5 opposite to the first surface 51 is a second surface 53, and the first surface 62 is correspondingly located between the first surface 51 and the second surface 53.

Referring to fig. 1 and 4, in detail, the module housing 5 includes an upper module housing 54 and a lower module housing 55 connected to each other, the window 52 is disposed on the lower module housing 55, and the connecting portion 6 and the lower module housing 55 are of an integrated structure. More specifically, the connecting portion 6 and the module lower case 55 are an integral structure formed by one-time injection molding, an integral structure formed by two-color injection molding or an integral structure formed by insert injection molding. In this embodiment, the connecting portion 6 is made of stainless steel, that is, the module lower case 55 and the connecting portion 6 are formed by insert injection molding to be an integral structure. The stainless steel sheet is selected as the connecting part 6, so that the overall structural strength of the loudspeaker module can be effectively improved.

As shown in fig. 4, further, in order to ensure the connection strength between the connecting portion 6 and the module lower case 55, a glue grasping portion 64 is provided on the outer periphery of the connecting portion 6, and at least partially extends into the module lower case 55. Specifically, in this embodiment, the connecting portion 6 further includes a base portion 65 and a transition portion 66, the first surface 62 and the second surface 63 are opposite surfaces of the base portion 65, the base portion 65 is connected to the glue grasping portion 64 through the transition portion 66, the transition portion 66 is disposed around a periphery of the base portion 65, the transition portion 66 includes a connecting flush portion 661 and a descending portion 662, the flush portion 661 is connected to the glue grasping portion 64, the descending portion 662 is connected to the base portion 65, an outer surface of the flush portion 661 is flush with the first surface 51, and an outer surface of the descending portion 662 is connected to the second surface 63, wherein the outer surface of the descending portion 662 may be a slope or an arc. The structure can protect the thin glue area on the inner side of the window 52 and prevent the situation that the connection part 6 and the module lower shell 55 are unstable due to the broken thin glue.

As shown in fig. 4, in order to further ensure the structural strength of the thin glue region inside the window 52, optionally, the second surface 53 is transited to the first surface 62 by an arc-shaped surface 56, and preferably, the transition of the arc-shaped surface 56 and the first surface 62 is located at the connection between the base 65 and the transition 66.

Example two

Referring to fig. 5, another technical solution proposed for the magnetic shield 2 on the basis of the first embodiment of the present invention is different from the second embodiment in that: the escape notch 21 does not communicate with any wall surface of the magnet cover 2.

Specifically, the avoiding notch 21 is formed in a hollow manner on the magnetic cover 2, and the structural strength of the magnetic cover 2 can be improved to a certain extent by the aid of the method.

In summary, according to the speaker module provided by the invention, the position of the magnetic cover corresponding to the support component is provided with the avoidance notch, so that the vibration space of the voice coil is effectively increased, and the speaker module can realize larger amplitude. In addition, set up the windowing on the module shell and set up the connecting portion that have the window that supplies the magnetism cover to expose in the windowing, not only can further increase the vibration space of voice coil loudspeaker voice coil, but also can make the speaker module more frivolous for the speaker module can be applicable to more and more frivolous portable electronic equipment. And the setting in magnetic shield limit groove not only makes things convenient for module shell and speaker monomer when equipment location, but also can prevent sealed glue to get into inside the speaker monomer, does benefit to the yields and the uniformity of guaranteeing the speaker module.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.

Claims

1. The utility model provides a loudspeaker module, includes the module shell and locates speaker monomer in the module shell, speaker monomer includes basin frame, voice coil loudspeaker voice coil, magnetism cover and supporting component, and magnetism cover and supporting component locate respectively on the basin frame, the voice coil loudspeaker voice coil is connected supporting component, its characterized in that: the magnetism cover has corresponding to the breach is dodged in the supporting component setting, dodges at least one wall of breach intercommunication magnetism cover, the first surface of module shell is equipped with the windowing, be equipped with connecting portion in the windowing, be equipped with the confession on the connecting portion the exerted window of magnetism cover, the edge of the exposed face of magnetism cover is equipped with the limit groove, the inward flange of connecting portion is located the limit inslot, the internal face of window with clearance between the vertical face of limit groove is through sealed packing, connecting portion just right supporting component's first face with the basin frame is greater than at the ascending interval of vertical side magnetism cover with the basin frame is at the ascending interval of vertical side.

2. The speaker module of claim 1, wherein: the distance between a second surface of the connecting part, which is opposite to the first surface, and the basin frame in the vertical direction is smaller than the distance between the first surface and the basin frame in the vertical direction.

3. The speaker module as claimed in claim 2, wherein: the exposed surface of the magnetic shield is not arranged in the first surface in a protruding mode in the windowing.

4. The speaker module as claimed in claim 2, wherein: the sealant is arranged in the window and does not protrude out of the first surface.

5. The speaker module of claim 4, wherein: the whole sealing glue is annular, the sealing glue comprises a filling part filled in the gap and an exposed part exposed out of the module shell, the filling part is connected with the exposed part, and the exposed part is arranged in the window opening and does not protrude out of the first surface.

6. The speaker module as claimed in claim 2, wherein: the second face is flush with the exposed face of the magnetic shield.

7. The speaker module of claim 1, wherein: the inner wall face of the module shell, which is opposite to the first face, is a second face, and the first face is correspondingly located between the first face and the second face.

8. The speaker module of claim 1, wherein: the module shell comprises an upper module shell and a lower module shell which are connected, the window is arranged on the lower module shell, and the connecting part and the lower module shell are of an integrated structure.

9. The speaker module as recited in claim 8, wherein: the connecting part and the module lower shell are of an integrated structure formed by one-time injection molding, an integrated structure formed by double-shot injection molding or an integrated structure formed by insert injection molding.

10. The speaker module of claim 1, wherein: the shape of the window is adapted to the outer contour of the magnetic shield.