CN220798532U - Miniature loudspeaker module - Google Patents

Abstract

The utility model discloses a miniature loudspeaker module, which comprises a lower shell, an upper shell, a vibration assembly and a magnetic circuit assembly, wherein the upper shell is connected with the lower shell to form an accommodating space, and a window is arranged on the upper shell; the vibration assembly comprises a vibration film assembly and a voice coil which are connected, the vibration film assembly is connected with the upper shell and seals the window, and the voice coil is positioned in the accommodating space; the magnetic circuit assembly is arranged in the accommodating space and provided with a magnetic gap for the voice coil to move. The miniature loudspeaker module cancels a basin frame, simplifies the miniature loudspeaker module structure, enables the miniature loudspeaker monomer and the module shell to be integrated into an integral structure, not only can reduce the consumption of manufacturing raw materials, but also can shorten the assembly process of the miniature loudspeaker module, effectively improves the production efficiency of the miniature loudspeaker module and reduces the production cost of the miniature loudspeaker module. Moreover, the elimination of the basin frame is beneficial to enlarging the volume of the rear sound cavity of the micro-speaker module and improving the acoustic performance of the micro-speaker module.

Description

A micro speaker module

Technical Field

The utility model relates to the technical field of electroacoustic converters, in particular to a micro-speaker module.

Background technique

As portable electronic devices become thinner, the micro speaker modules they carry also have to be designed to be thinner and lighter.

The micro speaker module includes a module housing and a micro speaker unit disposed in the module housing. The module housing includes an upper shell and a lower shell connected to each other. The micro speaker unit includes a basin frame and a diaphragm assembly and a magnetic circuit assembly respectively connected to the basin frame. The existence of the basin frame and the upper shell at the same time consumes more production materials, prolongs the production process of the micro speaker module, and results in a relatively high manufacturing cost of the micro speaker module.

Utility Model Content

The technical problem to be solved by the utility model is to provide a low-cost micro-speaker module.

In order to solve the above technical problems, the technical solution adopted by the utility model is: a micro speaker module, comprising:

lower shell;

An upper shell, the upper shell is connected to the lower shell to form a receiving space, and a window is provided on the upper shell;

A vibration assembly, the vibration assembly comprising a connected diaphragm assembly and a voice coil, the diaphragm assembly is connected to the upper shell and closes the window, and the voice coil is located in the accommodating space;

A magnetic circuit component is disposed in the accommodating space and has a magnetic gap for the voice coil to move.

Furthermore, the upper shell includes a top plate and a surrounding wall arranged around the edge of the top plate, the top plate is connected to the surrounding wall, the window is arranged on the top plate, and the lower shell is connected to the surrounding wall and is arranged away from the top plate.

Furthermore, a mounting groove is provided on the top surface of the top plate, the window is connected to a middle area of the bottom surface of the mounting groove, and an edge of the diaphragm assembly is connected to the bottom surface of the mounting groove.

Furthermore, the bottom surface of the top plate has a boss extending downward, and the boss is connected to the magnetic circuit assembly.

Furthermore, the bosses are respectively provided on two opposite sides of the window.

Furthermore, the outer peripheral wall of the lower shell is connected and fixed to the inner peripheral wall of the surrounding wall.

Furthermore, the inner surface of the upper shell has a positioning convex strip arranged along the vertical direction, and the magnetic circuit assembly has a first positioning groove matched with the positioning convex strip.

Furthermore, the top surface of the lower shell is provided with a second positioning groove that cooperates with the positioning convex strip.

Furthermore, the middle areas on the opposite sides of the upper shell have wall panels extending downward, and the wall panels are arranged corresponding to the magnetic circuit components; the middle area of the lower shell has a recessed portion, and the opposite sides of the recessed portion are respectively connected to the bottom of the wall panels.

Furthermore, the diaphragm assembly includes a sound membrane and a dome, the sound membrane includes an inner fixing portion, a folding ring portion and an outer fixing portion which are sequentially connected from the inside to the outside, the outer fixing portion is connected to the upper shell, and the dome is connected to the inner fixing portion.

The beneficial effect of the utility model is that the micro speaker module eliminates the basin frame, simplifies the structure of the micro speaker module, and integrates the micro speaker unit and the module shell into an integrated structure, which can not only reduce the consumption of manufacturing raw materials, but also shorten the assembly process of the micro speaker module, effectively improve the production efficiency of the micro speaker module, and reduce the production cost of the micro speaker module. Moreover, the elimination of the basin frame is also conducive to expanding the volume of the rear sound cavity of the micro speaker module and improving the acoustic performance of the micro speaker module.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of a micro-speaker module according to a first embodiment of the present invention;

FIG2 is a schematic structural diagram of the micro-speaker module of the first embodiment of the present invention from another perspective;

FIG3 is a cross-sectional view of a micro-speaker module according to Embodiment 1 of the present invention;

FIG4 is a schematic diagram of a partial structure of a micro-speaker module according to the first embodiment of the present invention;

FIG. 5 is a schematic structural diagram of the lower shell of the micro-speaker module according to the first embodiment of the present invention.

Description of labels:

1. lower shell; 11. second positioning groove; 12. lower recess;

2. upper shell; 21. top plate; 211. window; 212. mounting groove; 213. boss; 22. surrounding wall; 23. positioning convex strip; 24. wall plate;

3. Diaphragm assembly;

4. Voice coil;

5. Magnetic circuit assembly; 51. First positioning groove.

Detailed ways

In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.

Referring to FIGS. 1 to 5 , a micro speaker module includes:

Lower shell 1;

An upper shell 2, the upper shell 2 is connected to the lower shell 1 to form a receiving space, and a window 211 is provided on the upper shell 2;

A vibration assembly, the vibration assembly comprising a diaphragm assembly 3 and a voice coil 4 connected to each other, the diaphragm assembly 3 is connected to the upper shell 2 and closes the window 211, and the voice coil 4 is located in the accommodating space;

The magnetic circuit component 5 is arranged in the accommodating space, and the magnetic circuit component 5 has a magnetic gap for the voice coil 4 to move.

From the above description, it can be seen that the beneficial effect of the utility model is that the micro speaker module eliminates the basin frame, simplifies the structure of the micro speaker module, and integrates the micro speaker unit and the module shell into an integrated structure, which can not only reduce the consumption of manufacturing raw materials, but also shorten the assembly process of the micro speaker module, effectively improve the production efficiency of the micro speaker module, and reduce the production cost of the micro speaker module. Moreover, the elimination of the basin frame is also conducive to expanding the volume of the rear sound cavity of the micro speaker module and improving the acoustic performance of the micro speaker module.

Furthermore, the upper shell 2 includes a top plate 21 and a surrounding wall 22 arranged around the edge of the top plate 21, the top plate 21 is connected to the surrounding wall 22, the window 211 is arranged on the top plate 21, and the lower shell 1 is connected to the surrounding wall 22 and is arranged away from the top plate 21.

It can be seen from the above description that the upper shell 2 has a simple structure and is easy to process and manufacture.

Furthermore, a mounting groove 212 is provided on the top surface of the top plate 21 , the window 211 is connected to the middle area of the bottom surface of the mounting groove 212 , and the edge of the diaphragm assembly 3 is connected to the bottom surface of the mounting groove 212 .

From the above description, it can be seen that the installation groove 212 not only facilitates the positioning and installation of the diaphragm assembly 3, but also can accommodate a partial area of the diaphragm assembly 3, allowing the micro-speaker module to vibrate to a greater extent, so that the micro-speaker module can be used in an installation environment with relatively limited installation space.

Furthermore, the bottom surface of the top plate 21 has a boss 213 extending downward, and the boss 213 is connected to the magnetic circuit component 5 .

As can be seen from the above description, the arrangement of the boss 213 can provide sufficient space for the downward vibration movement of the diaphragm assembly 3, so that the micro speaker module can perform a larger downward vibration. At the same time, due to the presence of the boss 213, the thickness of other areas of the top plate 21 can be made thinner, thereby reducing the production consumables of the upper shell 2, which is conducive to further reducing the manufacturing cost of the micro speaker module.

Furthermore, the bosses 213 are respectively provided on two opposite sides of the window 211 .

It can be seen from the above description that the two bosses 213 arranged opposite to each other can provide stable support for the magnetic circuit assembly 5 .

Furthermore, the outer peripheral wall of the lower shell 1 is connected and fixed to the inner peripheral wall of the surrounding wall 22 .

From the above description, it can be seen that the connection between the upper shell 2 and the lower shell 1 is located at the bottom surface of the micro speaker module, which can reduce the risk of the lower shell 1 being separated from the upper shell 2 due to external impact, and is beneficial to improving the structural stability of the micro speaker module.

Furthermore, the inner surface of the upper shell 2 has a positioning ridge 23 arranged along the vertical direction, and the magnetic circuit component 5 has a first positioning groove 51 matched with the positioning ridge 23 .

It can be seen from the above description that the cooperation between the positioning ridge 23 and the first positioning groove 51 enables the magnetic circuit assembly 5 to be installed and positioned faster and more accurately, which is beneficial to improving the production quality and production efficiency of the micro speaker module.

Furthermore, a second positioning groove 11 cooperating with the positioning convex strip 23 is provided on the top surface of the lower shell 1 .

It can be seen from the above description that the cooperation between the positioning ridge 23 and the first positioning groove 51 enables the lower shell 1 to be installed and positioned faster and more accurately, which is beneficial to improving the production quality and production efficiency of the micro speaker module.

Furthermore, the middle areas on the opposite sides of the upper shell 2 have downwardly extending wall panels 24, and the wall panels 24 are arranged corresponding to the magnetic circuit components 5; the middle area of the lower shell 1 has a recessed portion 12, and the opposite sides of the recessed portion 12 are respectively connected to the bottom of the wall panels 24.

It can be seen from the above description that the thickness of both ends of the micro speaker module can be designed to be thinner, so that the micro speaker module can be suitable for some installation environments with special installation spaces.

Furthermore, the diaphragm assembly 3 includes a sound membrane and a dome, the sound membrane includes an inner fixing portion, a folding ring portion and an outer fixing portion which are sequentially connected from the inside to the outside, the outer fixing portion is connected to the upper shell 2, and the dome is connected to the inner fixing portion.

It can be seen from the above description that the provision of the ball top can improve the rigidity of the inner fixing part.

Embodiment 1

Please refer to FIG. 1 to FIG. 5 , the first embodiment of the present invention is: a miniature speaker module, which can be applied to electronic devices such as mobile phones, tablet computers, smart watches, and laptop computers.

Please refer to Figures 1 to 3. The micro speaker includes a lower shell 1, an upper shell 2, a vibration component and a magnetic circuit component 5. The upper shell 2 is connected to the lower shell 1 to form a storage space, and a window 211 is provided on the upper shell 2; the vibration component includes a connected diaphragm component 3 and a voice coil 4, the diaphragm component 3 is connected to the upper shell 2 and closes the window 211, the diaphragm component 3 includes a sound membrane and a ball top, the sound membrane includes an inner fixed part, a folding ring part and an outer fixed part connected in sequence from the inside to the outside, the outer fixed part is connected to the upper shell 2, the ball top is connected to the inner fixed part, the voice coil 4 is located in the storage space, and the voice coil 4 is connected to the ball top or the inner fixed part; the magnetic circuit component 5 is arranged in the storage space, the magnetic circuit component 5 has a magnetic gap for the voice coil 4 to move, and the magnetic circuit component 5 is connected and fixed to the upper shell 2 and/or the lower shell 1.

In this embodiment, the upper shell 2 includes a top plate 21 and a surrounding wall 22 arranged around the edge of the top plate 21, the top plate 21 is connected to the surrounding wall 22, the window 211 is arranged on the top plate 21, the lower shell 1 is connected to the surrounding wall 22 and is arranged away from the top plate 21, and optionally, the outer peripheral wall of the lower shell 1 is connected and fixed to the inner peripheral wall of the surrounding wall 22. Specifically, the top plate 21 and the surrounding wall 22 are an integral structure formed by integral processing, such as injection molding, etc. It is easy to understand that in other embodiments, a part of the area or the whole area of the surrounding wall 22 and the lower shell 1 are also an integral structure formed by integral processing, which can be selected according to actual needs.

As shown in FIG. 1 and FIG. 3 , in order to reduce the risk of the diaphragm assembly 3 being separated from the upper shell 2 due to the impact of foreign objects, the top surface of the top plate 21 is provided with a mounting groove 212, the opening 211 is connected to the middle area of the bottom surface of the mounting groove 212, and the edge of the diaphragm assembly 3 is connected to the bottom surface of the mounting groove 212. Specifically, the bottom surface of the outer edge of the external fixing portion is adhesively connected to the bottom surface of the mounting groove 212.

Please refer to Figures 2 to 5. Optionally, the bottom surface of the top plate 21 has a boss 213 extending downward, and the boss 213 is connected to the magnetic circuit assembly 5. In detail, the bosses 213 are respectively provided on opposite sides of the window 211. In this embodiment, the bosses 213 are arranged along the length direction of the top plate 21; the bottom surface of the boss 213 is adhesively connected to the top surface of the magnetic circuit assembly 5.

As shown in Fig. 3 and Fig. 4, the inner surface of the upper shell 2 has a positioning ridge 23 arranged in the vertical direction, and the magnetic circuit assembly 5 has a first positioning groove 51 that cooperates with the positioning ridge 23. Optionally, the top surface of the lower shell 1 is provided with a second positioning groove 11 that cooperates with the positioning ridge 23. When the upper shell 2 is connected to the lower shell 1 by adhesive bonding or ultrasonic welding, the presence of the second positioning groove 11 can increase the bonding area between the upper shell 2 and the lower shell 1, thereby improving the bonding force between the upper shell 2 and the lower shell 1, and further improving the structural stability of the micro speaker module.

Please refer to Figures 1, 2 and 5. In order to make the micro speaker module thick in the middle and thin at both ends so as to adapt to a specific installation environment, in this embodiment, the middle areas on the opposite sides of the upper shell 2 have downwardly extending wall panels 24, and the wall panels 24 are arranged corresponding to the magnetic circuit assembly 5; the middle area of the lower shell 1 has a recessed portion 12, and the opposite sides of the recessed portion 12 are respectively connected to the bottom of the wall panel 24.

As shown in FIG. 4 , in this embodiment, the positioning convex strip 23 connects the bottom surface of the boss 213 , the inner side surface of the surrounding wall 22 and the inner side surface of the wall plate 24 , which can facilitate the design of the processing mold of the upper shell 2 .

In summary, the micro-speaker module provided by the utility model eliminates the basin frame, simplifies the structure of the micro-speaker module, and integrates the micro-speaker unit and the module shell into an integrated structure, which can not only reduce the consumption of manufacturing raw materials, but also shorten the assembly process of the micro-speaker module, effectively improve the production efficiency of the micro-speaker module, and reduce the production cost of the micro-speaker module. Moreover, the elimination of the basin frame is also conducive to expanding the volume of the rear sound cavity of the micro-speaker module and improving the acoustic performance of the micro-speaker module. A positioning convex strip is provided in the upper shell, and a second positioning groove cooperating with the positioning convex strip is provided on the lower shell, which can facilitate the positioning and installation of the lower shell and improve the stability of the connection between the lower shell and the upper shell. The provision of the boss in the upper shell can reduce the production consumables of the top plate, which is conducive to further reducing the manufacturing cost of the micro-speaker module.

The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims (10)

1. A miniature speaker module, characterized in that: comprising

A lower case;

the upper shell is connected with the lower shell to form an accommodating space, and a window is arranged on the upper shell;

the vibration assembly comprises a vibration film assembly and a voice coil which are connected, the vibration film assembly is connected with the upper shell and seals the windowing, and the voice coil is positioned in the accommodating space;

the magnetic circuit assembly is arranged in the accommodating space and provided with a magnetic gap for the voice coil to move.

2. The micro-speaker module according to claim 1, wherein: the upper shell comprises a top plate and a surrounding wall arranged around the edge of the top plate, the top plate is connected with the surrounding wall, the window is arranged on the top plate, and the lower shell is connected with the surrounding wall and is far away from the top plate.

3. The micro-speaker module according to claim 2, wherein: the top surface of roof is equipped with the mounting groove, the fenestration intercommunication the middle part region of the bottom surface of mounting groove, vibrating diaphragm assembly's edge connection the bottom surface of mounting groove.

4. The micro-speaker module according to claim 2, wherein: the bottom surface of roof has the boss that extends downwards, the boss is connected the magnetic circuit subassembly.

5. The micro-speaker module according to claim 4, wherein: the bosses are respectively arranged on the two opposite sides of the window.

6. The micro-speaker module according to claim 2, wherein: the outer peripheral wall of the lower shell is fixedly connected with the inner peripheral wall of the surrounding wall.

7. The micro-speaker module according to claim 1, wherein: the inner surface of the upper shell is provided with a positioning convex strip arranged along the vertical direction, and the magnetic circuit assembly is provided with a first positioning groove matched with the positioning convex strip.

8. The micro-speaker module according to claim 7, wherein: the top surface of the lower shell is provided with a second positioning groove matched with the positioning convex strip.

9. The micro-speaker module according to claim 1, wherein: the middle areas of the two opposite sides of the upper shell are provided with wall plates extending downwards, and the wall plates are arranged corresponding to the magnetic circuit components; the middle area of the lower shell is provided with a lower concave part, and two opposite sides of the lower concave part are respectively connected with the bottom of the wallboard.

10. The micro-speaker module according to claim 1, wherein: the vibrating diaphragm assembly comprises a sound membrane and a ball top, wherein the sound membrane comprises an inner fixing part, a folded ring part and an outer fixing part which are sequentially connected from inside to outside, the outer fixing part is connected with the upper shell, and the ball top is connected with the inner fixing part.