CN212936098U

CN212936098U - Loudspeaker module

Info

Publication number: CN212936098U
Application number: CN202021346120.4U
Authority: CN
Inventors: 丁健华; 吴树文; 胡橙; 沈凯华
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2020-07-09
Filing date: 2020-07-09
Publication date: 2021-04-09
Anticipated expiration: 2030-07-09
Also published as: WO2022006954A1

Abstract

The utility model provides a loudspeaker module, including the casing that has accommodating space and accommodating the sound production monomer and the isolation component that are fixed in the casing, the sound production monomer includes the vibrating diaphragm, the casing includes the diapire just right to with the vibrating diaphragm, the roof that sets up with the diapire relative and interval and from the diapire towards the lateral wall that the roof is buckled and is extended, diapire, lateral wall and roof enclose into accommodating space; one side of the bottom wall, which is close to the vibrating diaphragm, is convexly provided with a retaining wall towards the top wall direction, the isolating component covers and is fixed at one end of the retaining wall, which is far away from the bottom wall, the isolating component divides the accommodating space into an accommodating cavity for accommodating the sounding monomers and a sound absorbing cavity for accommodating the sound absorbing material, the isolating component, the retaining wall and the bottom wall are enclosed to form the accommodating cavity, and the sound absorbing cavity is positioned between the isolating component and the top wall; the isolation assembly comprises a breathable isolation piece and a supporting framework for supporting the breathable isolation piece, the supporting framework is fixedly held on the breathable isolation piece, and the breathable isolation piece is abutted and fixed with the retaining wall. The support frame can prevent deformation caused by the pressure of the sound-absorbing material.

Description

Loudspeaker module

[ technical field ] A method for producing a semiconductor device

The utility model relates to an electroacoustic field especially relates to a speaker module.

[ background of the invention ]

In the current mobile internet era, the number of intelligent mobile terminal devices is increasing continuously, and the requirements for mobile terminals are higher and higher, one of which is the sound quality function requiring high quality.

In order to obtain better acoustic effect in some technologies, often pack sound absorbing material in the inside cavity of speaker module to with ventilative separator with sound absorbing material encapsulation, but because ventilative separator is mostly soft material and makes, consequently, under sound absorbing material's oppression, ventilative separator warp easily and the laminating is on the free surface of speaker sound production, and then influences the acoustic performance of speaker.

Therefore, there is a need to provide a new speaker module to solve the above problems.

[ Utility model ] content

An object of the utility model is to provide a loudspeaker module, acoustic performance is more stable.

The technical scheme of the utility model as follows: a loudspeaker module comprises a shell with an accommodating space, a sound production unit and an isolation assembly, wherein the sound production unit and the isolation assembly are accommodated and fixed in the shell, the sound production unit comprises a vibrating diaphragm, the shell comprises a bottom wall opposite to the vibrating diaphragm, a top wall opposite to the bottom wall and arranged at intervals, and a side wall bent and extended from the bottom wall to the top wall, and the accommodating space is enclosed by the bottom wall, the side wall and the top wall;

a retaining wall is convexly arranged on one side, close to the vibrating diaphragm, of the bottom wall towards the top wall, the isolating component covers and is fixed at one end, far away from the bottom wall, of the retaining wall, the isolating component divides the accommodating space into an accommodating cavity for accommodating the sounding monomers and a sound absorbing cavity for accommodating sound absorbing materials, the isolating component, the retaining wall and the bottom wall are enclosed to form the accommodating cavity, and the sound absorbing cavity is located between the isolating component and the top wall;

the isolation assembly comprises a breathable isolation piece and a support framework which is used for supporting the breathable isolation piece and has hardness greater than that of the breathable isolation piece, the support framework is fixedly arranged on the breathable isolation piece, and the breathable isolation piece is abutted against and fixed with the retaining wall; the accommodating cavity is communicated with the sound absorbing cavity through the breathable isolating piece.

Further, the air-permeable partition comprises a main body part opposite to the bottom wall, a side part formed by extending from the edge of the main body part towards the direction of the bottom wall, and a fixing part formed by extending from the edge of one end of the side part close to the bottom wall towards the direction of the side wall, wherein the fixing part is abutted and fixed with the retaining wall; the supporting framework comprises a transverse supporting part fixed on the main body part, a vertical supporting part extending towards the bottom wall from two ends of the transverse supporting part and fixed on the side part, and a side supporting part extending towards the side wall from one end of the vertical supporting part close to the bottom wall and fixed on the fixing part.

Further, at least one of the horizontal support part, the vertical support part and the side support part is a strip array structure arranged at intervals.

Further, the fixing part and the retaining wall are fixed by ultrasonic welding or gluing.

As a further step, the support frame is held on a side of the gas-permeable partition close to the bottom wall.

Further, the supporting framework is clamped between the sounding single body and the breathable isolating piece.

Furthermore, the bottom wall is provided with a support wall for supporting the sounding unit in a protruding manner towards the sounding unit, and the support wall abuts against the periphery of the sounding unit and is bonded with the sounding unit.

Furthermore, the sounding single body and the bottom wall form a front sound cavity at an interval, and the side wall is provided with a sound outlet channel communicated with the front sound cavity and the outside.

Furthermore, the retaining wall, the supporting wall and the bottom wall are integrally formed.

Furthermore, the bottom wall and/or the top wall is/are provided with injection holes, the injection holes are communicated with the sound-absorbing cavity, and the sound-absorbing material is filled into the sound-absorbing cavity through the injection holes; the loudspeaker module further comprises a sealing cover, and the sealing cover is arranged on the injection hole in a covering mode.

As a further step, the top wall and/or the bottom wall further penetrates through a leakage hole formed at an interval with the injection hole, the speaker module further comprises a breathable mesh cloth attached to the top wall and/or the bottom wall and covering the leakage hole, and the aperture of the leakage hole is smaller than that of the injection hole.

The beneficial effects of the utility model reside in that: cross the acoustic chamber that holds that the isolation component cut apart into the accommodating space and accept sound absorbing material of accommodating sound producing component, isolation component, barricade and diapire enclose to close and form and hold the chamber, because all regional homoenergetic except that holding the chamber in the accommodating space can fill sound absorbing material, thereby make and have a large amount of spaces in the speaker module in this embodiment and can be used for filling sound absorbing material, the acoustic performance of speaker module has been improved, through being provided with a plurality of supporting framework on the ventilative separator, through the supporting role of supporting framework to ventilative separator, can prevent to warp because of sound absorbing material's oppression, and then make the acoustic performance of speaker module in this embodiment more stable.

[ description of the drawings ]

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

FIG. 2 is an exploded view of the speaker module of FIG. 1;

fig. 3 is a cross-sectional view of the speaker module a-a of fig. 1;

FIG. 4 is a schematic view of the assembly of the retaining wall and the air-permeable barrier of FIG. 1;

FIG. 5 is a schematic structural view of the isolation assembly of FIG. 1;

FIG. 6 is a schematic view of the overall structure of the stent of FIG. 1;

in the figure: 100. a housing; 101. an accommodating chamber; 102. a sound absorbing chamber; 103. a front acoustic chamber; 104. an injection hole; 105. a leak hole; 110. a bottom wall; 120. a top wall; 130. a side wall; 131. a sound outlet channel; 140. retaining walls; 150. a support wall; 160. a sealing cover; 170. ventilating mesh cloth; 200. a sounding monomer; 210. vibrating diaphragm; 300. an isolation component; 310. a breathable barrier; 311. a main body portion; 312. a side portion; 313. a fixed part; 320. a support framework; 321. a lateral support portion; 322. a vertical support portion; 323. a side support portion; 400. dustproof ventilative screen cloth.

[ detailed description ] embodiments

To further illustrate embodiment examples, the present invention provides an attached drawing. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. With these references, one of ordinary skill in the art will appreciate other possible embodiments and advantages of the present invention. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.

The present invention will be further described with reference to the accompanying drawings and embodiments.

Referring to fig. 1 to 6, an embodiment of the present invention provides a speaker module, which includes a housing 100 having an accommodating space, and a sound generating unit 200 and an isolation assembly 300 accommodated and fixed in the housing 100.

Referring to fig. 2, fig. 3 and fig. 6, the sound generating unit 200 in the present embodiment includes a diaphragm 210, the housing 100 includes a bottom wall 110 opposite to the diaphragm 210, a top wall 120 opposite to the bottom wall 110 and spaced apart from the bottom wall 110, and a side wall 130 bending and extending from the bottom wall 110 toward the top wall 120, and the bottom wall 110, the side wall 130 and the top wall 120 enclose the accommodating space.

Preferably, the top wall 120 is ultrasonically welded or glued to the end of the side wall 130 remote from the bottom wall 110.

Referring to fig. 2, fig. 3 and fig. 6, in this embodiment, a retaining wall 140 is convexly disposed on one side of the bottom wall 110 close to the diaphragm 210 toward the top wall 120, the isolation component 300 covers and is fixed to one end of the retaining wall 140 far from the bottom wall 110, the isolation component 300 divides the accommodating space into an accommodating cavity 101 accommodating the sound generating unit 200 and a sound absorbing cavity 102 accommodating a sound absorbing material, the isolation component 300, the retaining wall 140 and the bottom wall 110 enclose the accommodating cavity 101, the sound absorbing cavity 102 is located between the isolation component 300 and the top wall 120, and specifically, the sound absorbing cavity 102 is enclosed by the isolation component 300, the retaining wall 140, the bottom wall 110 and the top wall 120. Because all the regional homoenergetic except that hold chamber 101 in the accommodating space can fill sound absorbing material to having a large amount of spaces in making the accommodating space and can be used to filling sound absorbing material, improved speaker module's acoustic performance.

Referring to fig. 2, 3 and 5, the isolating assembly 300 in the present embodiment includes a gas-permeable isolating member 310 and a supporting frame 320 for supporting the gas-permeable isolating member 310 and having a hardness greater than that of the gas-permeable isolating member 310, wherein the supporting frame 320 is fixed on the gas-permeable isolating member 310, and the gas-permeable isolating member 310 is abutted against and fixed to the retaining wall 140; the accommodating chamber 101 communicates with the sound absorbing chamber 102 through the air-permeable partition 310. Because the hardness of the supporting framework 320 is stronger than that of the breathable isolating piece 310, the supporting framework 320 can support the breathable isolating piece 310 to prevent deformation caused by compression of sound absorbing materials, and the acoustic performance of the loudspeaker module in the embodiment is more stable.

Preferably, the supporting frame 320 is held on a side of the air-permeable partition 310 close to the bottom wall 110, and further preferably, the supporting frame 320 is clamped between the sound-generating unit 200 and the air-permeable partition 310. Of course, in some embodiments, the supporting frame 320 may also be held on the side of the air-permeable partition 310 away from the bottom wall 110.

Referring to fig. 5, the air-permeable partition 310 in this embodiment includes a main body 311 opposite to the bottom wall 110, a side 312 extending from an edge of the main body 311 toward the bottom wall 110, and a fixing portion 313 extending from an edge of the side 312 near one end of the bottom wall 110 toward the side wall 130, wherein the fixing portion 313 abuts against and is fixed to the retaining wall 140; the supporting frame 320 includes a horizontal supporting portion 321 fixed to the main body 311, a vertical supporting portion 322 extending from two ends of the horizontal supporting portion 321 toward the bottom wall 110 and fixed to the side portion 312, and a side supporting portion 323 extending from one end of the vertical supporting portion 322 close to the bottom wall 110 toward the side wall 130 and fixed to the fixing portion 313. By arranging the air-permeable partition 310 in a three-dimensional shape with the side parts 312 and the main body part 311, the height of the retaining wall 140 can be reduced on the basis of covering the sounding unit 200, so that the area of the air-permeable partition 310 can be correspondingly increased to increase the area through which sound can pass, and the volume of the sound-absorbing cavity 102 can be appropriately increased to fill more sound-absorbing materials, thereby further improving the acoustic performance.

Preferably, at least one of the horizontal support portion 321, the vertical support portion 322, and the side support portion 323 is a strip-shaped array structure arranged at intervals. It should be noted that the stripe array structure may be a parallel structure or a cross structure.

It is further preferable that the supporting frame 320 has a plurality of supporting frames 320, and the plurality of supporting frames 320 are parallel to and spaced apart from each other and are fixed on the air-permeable partition 310, and of course, the plurality of supporting frames 320 may be fixed on the air-permeable partition 310 in a crossed manner, so as to achieve better supporting effect.

In some related arts, the air-permeable partition 310 is often disposed on the side of the sound generating unit 200, and the accommodating chamber 101 for accommodating the sound generating unit 200 occupies a large space, so that the sound-absorbing chamber 102 is too small and the acoustic performance is not significantly improved, and in some related arts, the air-permeable partition 310 does not form a part of the accommodating chamber 101, so that a part of the space between the air-permeable partition 310 and the accommodating chamber 101 is not fully utilized, so that the sound-absorbing chamber 102 is too small and the acoustic performance is not significantly improved. In order to solve the above problem, referring to fig. 2 to fig. 4, the air-permeable isolating member 310 in the present embodiment is located on a side of the sound-generating unit 200 away from the diaphragm 211, so that the area of the air-permeable isolating member 310 is also large enough, and the smooth performance of air circulation between the accommodating cavity 101 and the sound-absorbing cavity 102 can be greatly improved, and the acoustic performance of the speaker module in the present embodiment can be better improved, and the air-permeable isolating member 310 forms a part of the accommodating cavity 101, so that the space between the top wall 120 and the air-permeable isolating member 310 can be well utilized to place the sound-absorbing material.

The bottom wall 110 and the retaining wall 140 in this embodiment are integrally formed, preferably integrally injection molded, to simplify the production and assembly.

Preferably, the shape of holding chamber 101 with sound production monomer 200 looks adaptation can reduce and place the space of sound production monomer 200 to can leave more spaces and be used for placing sound absorbing material, so that the low frequency acoustic performance of the speaker module in this embodiment is better.

Referring to fig. 2, 3 and 6, in the present embodiment, the bottom wall 110 is further provided with a supporting wall 150 protruding toward the sounding unit 200 for supporting the sounding unit 200, and the supporting wall 150 abuts against the periphery of the sounding unit 200 and is adhered to the sounding unit 200. Preferably, the sound generating unit 200 is fixed to the support wall 150 by ultrasonic welding or gluing.

Referring to fig. 3, a gap is left between the air-permeable spacer 310 and the sound-generating unit 200 in the present embodiment, and further, the sound-generating unit 200 is communicated with the air-permeable spacer 310, which is more beneficial to sound transmission and can improve the acoustic performance of the speaker module in the present embodiment.

The sound-absorbing material in this embodiment is made of zeolite particles, but may be made of other materials that can improve acoustic performance.

The air-permeable partition 310 in this embodiment is an air-permeable mesh, and the air-permeable partition 310 may also be a non-woven fabric, a nylon woven fabric, a wool woven fabric, a metal mesh, or paper.

Referring to fig. 3, in the present embodiment, the sounding unit 200 and the bottom wall 110 form a front sound cavity 103 at an interval, and the side wall 130 is provided with a sound outlet channel 131 for communicating the front sound cavity 103 with the outside. Specifically, one end of the sound outlet channel 131, which is far away from the sound generating unit 200, is communicated with the outside, and one end of the sound outlet channel 131, which is close to the sound generating unit 200, is communicated with the front sound cavity 103.

Referring to fig. 1-3, the speaker module in this embodiment further includes a dustproof air-permeable mesh 400 attached to the side wall 130 and covering an end of the sound channel 131 far from the sound generating unit 200.

Referring to fig. 1, 2 and 6, in the present embodiment, the bottom wall 110 and/or the top wall 120 are provided with an injection hole 104, the injection hole 104 is communicated with the sound-absorbing cavity 102, and the sound-absorbing material is filled into the sound-absorbing cavity 102 through the injection hole 104.

Referring to fig. 2, the housing 100 of the present embodiment further includes a sealing cover 160, and the sealing cover 160 is disposed on the injection hole 104. Specifically, after the sound-absorbing material is filled into the sound-absorbing chamber 102 through the filling hole 104, the filling hole 104 is sealed by the sealing cap 160.

Referring to fig. 2 and 5, in the present embodiment, the top wall 120 and/or the bottom wall 110 further penetrate through a leakage hole 105 disposed at an interval with the injection hole 104, the internal and external sound pressures of the sound absorbing cavity 102 can be balanced by the leakage hole 105, the speaker module further includes a ventilation mesh cloth 170 attached to the top wall 120 and/or the bottom wall 110 and covering the leakage hole 105, and the aperture of the leakage hole 105 is smaller than the aperture of the injection hole 104.

Preferably, the leakage hole 105 is formed through the top wall 120, and the injection hole 104 is formed through the bottom wall 110.

The loudspeaker module in this embodiment not only can be convenient produce the assembly, the space of the utilization cavity that moreover can the maximize is used for filling sound absorbing material to improvement acoustic performance that can be fine.

The above embodiments of the present invention are only described, and it should be noted that, for those skilled in the art, modifications can be made without departing from the inventive concept, but these all fall into the protection scope of the present invention.

Claims

1. A speaker module, its characterized in that: the sound-producing device comprises a shell with an accommodating space, a sound-producing unit and an isolation assembly, wherein the sound-producing unit and the isolation assembly are accommodated and fixed in the shell, the sound-producing unit comprises a vibrating diaphragm, the shell comprises a bottom wall opposite to the vibrating diaphragm, a top wall opposite to the bottom wall and arranged at intervals, and a side wall bent and extended from the bottom wall to the top wall, and the accommodating space is enclosed by the bottom wall, the side wall and the top wall;

2. The speaker module of claim 1, wherein: the breathable isolating piece comprises a main body part opposite to the bottom wall, a side part formed by extending from the edge of the main body part towards the direction of the bottom wall and a fixing part formed by extending from the edge of one end, close to the bottom wall, of the side part towards the direction of the side wall, and the fixing part is abutted to and fixed with the retaining wall; the supporting framework comprises a transverse supporting part fixed on the main body part, a vertical supporting part extending towards the bottom wall from two ends of the transverse supporting part and fixed on the side part, and a side supporting part extending towards the side wall from one end of the vertical supporting part close to the bottom wall and fixed on the fixing part.

3. The speaker module as claimed in claim 2, wherein: at least one of the horizontal supporting part, the vertical supporting part and the side supporting part is a strip-shaped array structure arranged at intervals.

4. A speaker module as claimed in claim 3, wherein: the fixing part and the retaining wall are fixed by ultrasonic welding or gluing.

5. A loudspeaker module according to any one of claims 1 to 4, wherein: the support framework is fixedly held on one side of the breathable partition, which is close to the bottom wall.

6. The speaker module of claim 5, wherein: the supporting framework is abutted to the sounding monomer.

7. The speaker module of claim 5, wherein: the diapire court sound production monomer direction is protruding still to be equipped with the support the free support wall of sound production, the support wall butt is in sound production monomer periphery and with sound production monomer bonds.

8. The speaker module as claimed in claim 7, wherein: the sounding monomer and the diapire interval form preceding sound chamber, the lateral wall is seted up the intercommunication preceding sound chamber and outside play sound passageway.

9. The speaker module as claimed in claim 7, wherein: the barricade the support wall reaches diapire integrated into one piece sets up.

10. The speaker module as recited in claim 9, wherein: the bottom wall and/or the top wall are/is provided with an injection hole, the injection hole is communicated with the sound-absorbing cavity, and the sound-absorbing material is filled into the sound-absorbing cavity through the injection hole; the loudspeaker module further comprises a sealing cover, and the sealing cover is arranged on the injection hole in a covering mode.

11. The speaker module as recited in claim 10, wherein: the roof and/or the diapire still run through set up with leak the hole that the injection hole interval set up, the speaker module is still including pasting and locating the roof and/or the diapire covers leak the ventilative screen cloth in hole, leak the aperture in hole and be less than the aperture of injection hole.