CN212992532U

CN212992532U - Loudspeaker module

Info

Publication number: CN212992532U
Application number: CN202021340961.4U
Authority: CN
Inventors: 丁健华; 吴树文
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2020-07-09
Filing date: 2020-07-09
Publication date: 2021-04-16
Anticipated expiration: 2030-07-09
Also published as: WO2022006940A1

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 ventilating isolation piece and a support ring, wherein the ventilating isolation piece is arranged at an interval with the retaining wall, the support ring and the periphery of the ventilating isolation piece are integrally formed in an injection molding mode, and the support ring is abutted and fixed with the retaining wall. The loudspeaker module in this embodiment has better acoustic performance and simpler assembly.

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 among some technologies, often pack sound absorbing material in the inside cavity of speaker module to with ventilative separator with sound absorbing material encapsulation, for the assembly is more convenient, lead to some speaker module's structural design unreasonable, cause only very little space capacity to be used for accomodating sound absorbing material, cause the low frequency acoustic performance not good.

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 speaker module, the assembly is simple and can accomodate a large amount of sound absorbing material.

In order to solve the technical problem, 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 component comprises a breathable isolation piece arranged at intervals on the retaining wall and a support ring integrated with the periphery of the breathable isolation piece in an injection molding mode, and the support ring is abutted against and fixed to the retaining wall.

As an improvement, the support ring and the retaining wall are fixed by ultrasonic welding or gluing.

As an improvement, the edge of the air-permeable partition is embedded in the support ring, and the support ring is injection-molded on two opposite sides of the air-permeable partition.

As an improvement, the diapire towards sound production monomer direction is still protruding to be equipped with and supports the free support wall of sound production, the support wall butt is in sound production monomer periphery and with sound production monomer bonds.

As an improvement, the ventilating isolation piece and the sounding single body are arranged at intervals.

As an improvement, the sounding monomer and the bottom wall form a front sound cavity at intervals, and the side wall is provided with a sound outlet channel communicated with the front sound cavity and the outside.

As an improvement, the retaining wall, the supporting wall and the bottom wall are integrally formed.

As an improvement, the bottom wall and/or the top wall is/are provided with an injection hole, the injection hole is communicated with the sound absorption cavity, and the sound absorption material is filled into the sound absorption cavity through the injection hole.

As an improvement, the injection device further comprises a sealing cover which is arranged on the injection hole in a covering mode.

As an improvement, the roof and/or the diapire still run through set up with the leak hole that the filling hole interval set up, the speaker module is still including pasting and locating the roof covers leak the ventilative screen cloth in hole, leak the aperture in hole and be less than the aperture of filling hole.

The beneficial effects of the utility model reside in that: the containing space is divided into a containing cavity for containing the sounding component and a sound absorbing cavity for containing the sound absorbing material by the isolation component, the retaining wall and the bottom wall are enclosed to form the containing cavity, because all areas except the accommodating cavity in the accommodating space can be filled with the sound-absorbing material, a large amount of space in the loudspeaker module in the embodiment can be used for filling the sound-absorbing material, the acoustic performance of the loudspeaker module is improved, in addition, the breathable isolating piece and the support ring are integrally molded by injection, so that during assembly, the step of gluing or welding the gas-permeable barrier to the support ring can be omitted, moreover, the breathable isolating piece is made of soft material, so the step of gluing or welding the breathable isolating piece on the support ring is time-consuming and labor-consuming, therefore, the loudspeaker module in the embodiment has simplified assembly steps and is simpler and more convenient to assemble.

[ 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 support ring and the gas permeable barrier of FIG. 1;

FIG. 5 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; 211. vibrating diaphragm; 300. an isolation component; 310. a breathable barrier; 320. a support ring; 400. dustproof ventilative screen cloth.

[ detailed description ] embodiments

To further illustrate 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 5, 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. 1 to fig. 3, the sound generating unit 200 in this embodiment includes a diaphragm 211, the housing 100 includes a bottom wall 110 opposite to the diaphragm 211, 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 to the end of the side wall 130 remote from the bottom wall 110.

Referring to fig. 1 to 5, in this embodiment, a retaining wall 140 is convexly disposed on one side of the bottom wall 110 close to the vibrating diaphragm 211 toward the top wall 120, the isolating assembly 300 covers and is fixed to one end of the retaining wall 140 far from the bottom wall 110, the isolating assembly 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 isolating assembly 300, the retaining wall 140 and the bottom wall 110 enclose the accommodating cavity 101, the sound absorbing cavity 102 is located between the isolating assembly 300 and the top wall 120, and specifically, the sound absorbing cavity 102 is enclosed by the isolating assembly 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.

Preferably, the bottom wall 110 and the retaining wall 140 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 5, the isolating assembly 300 of the present embodiment includes a gas-permeable isolating member 310 spaced apart from the retaining wall 140 and a support ring 320 formed integrally with the periphery of the gas-permeable isolating member 310 by injection molding, wherein the support ring 320 is abutted against and fixed to the retaining wall 140. Through the integral injection molding of the breathable partition member 310 and the support ring 320, the step of gluing or welding the breathable partition member 310 on the support ring 320 can be omitted during assembly, and the step of gluing or welding the breathable partition member 310 on the support ring 320 is time-consuming and labor-consuming because the breathable partition member 310 is made of soft materials, so that the assembly step of the loudspeaker module in the embodiment is simplified, and the assembly is simpler and more convenient.

Preferably, the edges of the air-permeable barrier 310 are embedded in the support ring 320, and the support ring 320 is injection-molded on opposite sides of the air-permeable barrier 310.

Referring to fig. 2, fig. 3 and fig. 5, the supporting ring 320 in the present embodiment is disposed on the housing 100, specifically, the supporting ring 320 is disposed on the retaining wall 140, and preferably, the supporting ring 320 and the retaining wall 140 are fixed by ultrasonic welding or gluing.

In some related arts, the air-permeable partition 310 is often disposed on the side of the sound generating unit 200, so that the accommodating chamber 101 for accommodating the sound generating unit 200 occupies a large space, resulting in a too small sound-absorbing chamber 102 and a not significantly improved acoustic performance, 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 cannot be fully utilized, resulting in a too small sound-absorbing chamber 102 and a not significantly improved acoustic performance. To solve the above problem, referring to fig. 2, fig. 3 and fig. 5, 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 the area of the air-permeable isolating member 310 is also large enough, and the smooth performance of the communication 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.

Referring to fig. 2, 3 and 5, 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 partition 310 and the sound-generating unit 200 in the present embodiment, and further, air can fully circulate between the sound-generating unit 200 and the air-permeable partition 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.

Referring to fig. 3, in the present embodiment, a gap exists between the air-permeable partition 310 and the top wall 120, so as to ensure the communication between the accommodating cavity 101 and the sound-absorbing cavity 102, thereby improving the reliability and the low-frequency acoustic performance of the speaker module in the present embodiment.

The air-permeable partition 310 in this embodiment is an air-permeable mesh cloth 170, 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 5, 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 support ring is fixed with barricade ultrasonic welding or veneer.

3. The speaker module as claimed in claim 2, wherein: the edge of the breathable partition is embedded in the support ring, and the support ring is injection-molded on two opposite sides of the breathable partition.

4. A loudspeaker module according to any one of claims 1-3, 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.

5. The speaker module of claim 4, wherein: the breathable isolating piece and the sounding monomer are arranged at intervals.

6. The speaker module of claim 4, 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.

7. The speaker module of claim 4, wherein: the barricade the support wall reaches diapire integrated into one piece sets up.

8. The speaker module as claimed in claim 7, wherein: the diapire and/or seted up the filling hole on the roof, the filling hole with sound-absorbing cavity intercommunication, sound-absorbing material warp the filling hole is filled to sound-absorbing cavity.

9. The speaker module as recited in claim 8, wherein: the injection hole is arranged on the bottom of the injection hole, and the injection hole is arranged on the bottom of the injection hole.

10. The speaker module as recited in claim 9, 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.