CN212992595U

CN212992595U - Loudspeaker module

Info

Publication number: CN212992595U
Application number: CN202021343068.7U
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: 2021-04-16
Anticipated expiration: 2030-07-09
Also published as: WO2022006936A1

Abstract

The utility model provides a loudspeaker module, which comprises a bracket, a cover body, a breathable isolating piece and a sounding monomer, wherein the cover body is covered on the bracket and forms a cavity with the bracket; ventilative separator separates the cavity for holding the chamber and inhaling the sound chamber, and ventilative separator lid is located the sound production monomer and is enclosed to close with the support and form and hold the chamber, and the last one side of being close to ventilative separator of sound production monomer is provided with the brace rod to ventilative separator protrusion extension, and ventilative separator supports to press on the brace rod. Through ventilative separator with the cavity separation for holding the chamber and inhale the sound chamber, the sound production monomer is placed and is holding the intracavity, is provided with the brace rod on the sound production monomer, and ventilative separator supports and presses on the brace rod, through the support of brace rod to ventilative separator, can prevent that ventilative separator from pasting on the free surface of sound production because of warping, and then can prevent to influence the acoustic performance of speaker module because of the deformation of ventilative separator.

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 bracket, a cover body and a ventilating isolation piece, wherein the cover body covers the bracket and forms a cavity with the bracket in an enclosing manner; the ventilating partition piece divides the cavity into an accommodating cavity and a sound absorbing cavity, and the loudspeaker module further comprises a sounding monomer accommodated in the accommodating cavity; ventilative separator lid is located sound production monomer and with the support encloses to close and forms hold the chamber, the sound production monomer is last be close to one side of ventilative separator is provided with to the brace rod that ventilative separator protrusion extends, ventilative separator supports to press on the brace rod.

As a further aspect, the support includes a bottom case and a retaining wall extending from the bottom case to the cover body, the periphery of the sounding monomer abuts against the retaining wall, and the ventilation isolation member includes a body portion covering one side of the sounding monomer away from the bottom case, an extension portion bending and extending from the periphery of the body portion to a position close to the bottom case, and a fixing portion extending from the extension portion to a position away from the sounding monomer and fixed to the retaining wall; the body part is abutted against the support rib.

As a further step, the sound-producing unit comprises a vibration system and a magnetic circuit system for driving the vibration system to vibrate, the ventilating isolator covers one side of the sound-producing unit close to the magnetic circuit system, the magnetic circuit system comprises a magnetic bowl arranged at an interval with the vibration system, and the support rib is arranged on one side of the magnetic bowl close to the ventilating isolator.

Further, the supporting ribs are provided in plurality, and the supporting ribs are arranged on the magnetic bowl at intervals.

As a further step, the drain pan includes the diapire and certainly the periphery orientation of diapire the lid extends the lateral wall that forms, the barricade certainly the diapire to the lid extends to form and is located the lateral wall is close to the free one side of sound production, the barricade deviates from a lateral direction of lateral wall is close to the lateral wall is sunken to form and is supported the step, the vibration system butt is in support on the step, the fixed part is fixed in the barricade is close to one of lid is served.

Furthermore, the vibration system comprises a vibrating diaphragm which is opposite to the magnetic bowl at an interval and faces the bottom wall, a front sound cavity is formed between the vibrating diaphragm and the bottom wall at an interval, and a sound outlet channel communicated with the front sound cavity and the outside is formed in the side wall in a penetrating mode.

As a further step, the support, ventilative separator and the lid encloses to close and forms the sound-absorbing cavity, the sound-absorbing cavity with hold the chamber and set up side by side, the sound-absorbing intracavity intussuseption is filled with sound absorbing material.

Furthermore, the cover body and/or the bracket are/is provided with an injection hole, the injection hole is communicated with the sound absorption cavity, and the sound absorption material is injected into the sound absorption cavity through the injection hole.

As a further step, the lid and/or seted up on the support and let out the leakage hole, let out the leakage hole with the sound-absorbing cavity intercommunication, the sound production monomer is equipped with reveals the portion, the sound production monomer passes through in proper order reveal the portion ventilative separator and the sound-absorbing cavity with let out the leakage hole intercommunication.

As a further step, the sounding unit comprises a basin frame, and a vibration system and a magnetic circuit system which are fixedly supported on the basin frame, wherein the magnetic circuit system comprises a magnetic bowl, and the magnetic bowl and at least part of the basin frame are separated to form the leakage part.

The beneficial effects of the utility model reside in that: separate the cavity for holding chamber and sound absorbing cavity through ventilative barrier member, the sound production monomer is placed and is holding the intracavity, be provided with the brace rod on the sound production monomer, and ventilative barrier member supports and presses on the brace rod, support through the brace rod to ventilative barrier member, can prevent that ventilative barrier member from pasting on the free surface of sound production because of warping, and then can prevent to influence the acoustic performance of speaker module because of the deformation of ventilative barrier member, and the assembly of ventilative barrier member is also more convenient, the acoustic performance of speaker module in this embodiment is 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 of FIG. 1 taken along line A-A;

FIG. 4 is a cross-sectional view of the speaker module of FIG. 1 taken along line B-B;

FIG. 5 is a schematic view of the assembly of the holder and the air-permeable barrier of FIG. 1;

FIG. 6 is an exploded view of the sounding unit of FIG. 1;

FIG. 7 is a schematic view of the overall structure of the stent of FIG. 1;

FIG. 8 is a schematic view of the overall construction of the breathable barrier of FIG. 1;

[ detailed description ] embodiments

To further illustrate the various embodiments, the invention provides the accompanying drawings. 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. Those skilled in the art will appreciate still other possible embodiments and advantages of the present invention with reference to these figures. 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 8, an embodiment of the present invention provides a speaker module, which includes a bracket 100, a cover 200, a sound generating unit 300, and a ventilation spacer 400.

Referring to fig. 3-7, the support 100 in the present embodiment includes a bottom case 110, the cover 200 is disposed on the bottom case 110 to form a cavity 101, specifically, the bottom case 110 includes a bottom wall 120 and a sidewall 130 extending from a periphery of the bottom wall 120 toward the cover 200, the cover 200 is disposed on the sidewall 130, and the sound generating unit 300 and the air permeable partition 400 are accommodated in the cavity 101.

Referring to fig. 3, 4 and 6, the air-permeable partition 400 in the present embodiment divides the cavity 101 into an accommodating cavity 102 and a sound-absorbing cavity 103, the sounding unit 300 is accommodated in the accommodating cavity 102, and the sound-absorbing cavity 103 is filled with a sound-absorbing material.

Referring to fig. 3, 4 and 6, the air-permeable partition 400 in the present embodiment is covered on the sound-generating unit 300 and encloses with the support 100 to form the accommodating cavity 102, specifically, the support 100 further includes a retaining wall 140 extending from the bottom wall 120 toward the cover body 200 and located on one side of the side wall 130 close to the sound-generating unit 300, the periphery of the sound-generating unit 300 abuts against the retaining wall 140, and the edge of the air-permeable partition 400 is fixed on the retaining wall 140 and forms the accommodating cavity 102 with the retaining wall 140 and the bottom wall 120.

Referring to fig. 2 to 6, in the present embodiment, a supporting rib 3211 protruding toward the air permeable partition 400 is disposed on one side of the sound generating unit 300 close to the air permeable partition 400, and the air permeable partition 400 is pressed against the supporting rib 3211. Through the support of brace 3211 to ventilative spacer 400, can prevent that ventilative spacer 400 from pasting on the surface of sound production monomer 300 because of warping, and then can prevent to influence the acoustic performance of speaker module because of ventilative spacer 400's deformation, the acoustic performance of speaker module in this embodiment is more stable. Because the support ribs 3211 support the breathable partition 400, a gap is left between the surface of the sound-generating unit 300 facing the breathable partition 400 and the breathable partition 400, so that gas can smoothly circulate between the sound-generating unit 300 and the breathable partition 400.

Referring to fig. 8, the ventilation spacer 400 in the present embodiment includes a main body 410 covering the sound generating unit 300 on a side away from the bottom case 110, an extending portion 420 extending from a periphery of the main body 410 to a side close to the bottom case 110, and a fixing portion 430 extending from the extending portion 420 to a side away from the sound generating unit 300 and fixed to the retaining wall 140; the fixing portion 430 is fixed to the retaining wall 140, preferably by ultrasonic welding or gluing, and the body portion 410 abuts against the supporting rib 3211. By arranging the air-permeable isolating piece 400 to be a three-dimensional shape with the extending part 420 and the body part 410, the height of the retaining wall 140 can be reduced on the basis that the sound-emitting single body 300 can be covered, so that the area of the air-permeable isolating piece 400 can be correspondingly increased to increase the space of the single body leaking through the air-permeable isolating piece 400, and the volume of the sound-absorbing cavity 103 can be properly increased to fill more sound-absorbing materials, thereby further improving the acoustic performance.

Referring to fig. 3 to 6, the sound generating unit 300 in this embodiment includes a vibration system 310 and a magnetic circuit system 320 for driving the vibration system 310 to vibrate, the air-permeable isolating member 400 covers a side of the sound generating unit 300 close to the magnetic circuit system 320, the magnetic circuit system 320 includes a magnetic bowl 321 spaced from the vibration system 310, and a primary magnetic steel 322 and a secondary magnetic steel 323 disposed on the magnetic bowl 321, and the support rib 3211 is disposed on a side of the magnetic bowl 321 close to the air-permeable isolating member 400.

Referring to fig. 3 to fig. 6, in the embodiment, a plurality of support bars 3211 are provided, and the plurality of support bars 3211 are disposed on the magnetic bowl 321 at intervals. Thereby making the supporting effect better.

Referring to fig. 6, in the present embodiment, a side of the retaining wall 140 away from the side wall 130 is recessed to be close to the side wall 130 to form a supporting step 150, the vibration system 310 abuts against the supporting step 150, and the fixing portion 430 is fixedly disposed on an end of the retaining wall 140 close to the cover 200.

Referring to fig. 6, the sound generating unit 300 in the present embodiment includes a frame 312, the vibration system 310 includes a vibrating diaphragm 311 fixed to the frame 312 and the magnetic bowl 321 at an interval opposite to each other and facing the bottom wall 120, the frame 312 is fixed to the supporting step 150, the vibrating diaphragm 311 is clamped and fixed between the supporting step 150 and the frame 312, preferably, the vibrating diaphragm 311 and the bottom wall 120 are fixed by gluing, the vibrating diaphragm 311 and the bottom wall 120 are arranged at an interval, the vibrating diaphragm 311 and the bottom wall 120 form a front sound cavity 104 at an interval, and the side wall 130 is provided with a sound outlet channel 131 penetrating and communicating the front sound cavity 104 with the outside.

Referring to fig. 3 and 4, in the present embodiment, the support 100, the air-permeable partition 400 and the cover 200 enclose a sound-absorbing cavity 103, and the sound-absorbing cavity 103 is filled with sound-absorbing material. Inhale sound chamber 103 with hold chamber 102 and set up side by side to make in the cavity 101 except placing sound production monomer 300 all the space except that holding chamber 102 has all filled sound absorbing material, and then utilization that can maximize the space of cavity 101 can place a larger amount sound absorbing material to can improve the reliable performance and the low frequency acoustic performance of the speaker module in this embodiment.

Referring to fig. 1-4, the speaker module in this embodiment further includes a dustproof air-permeable mesh cloth 500 attached to the side wall 130 and covering an end of the sound channel 131 far from the sound generating unit 300.

Referring to fig. 2, 5 and 7, in the present embodiment, the bottom wall 120 and/or the cover 200 is provided with an injection hole 105, the injection hole 105 is communicated with the sound-absorbing cavity 103, and the sound-absorbing material is filled into the sound-absorbing cavity 103 through the injection hole 105.

Referring to fig. 2, the housing of the present embodiment further includes a sealing cover 160, and the sealing cover 160 is disposed on the injection hole 105. Specifically, after the sound absorbing material is filled into the sound absorbing chamber 103 through the filling hole 105, the filling hole 105 is hermetically sealed and covered by the sealing cover 160.

Referring to fig. 1 and fig. 2, in the present embodiment, the cover body 200 and/or the bottom wall 120 further penetrate through a leakage hole 106 disposed at an interval with the filling hole 105 and a ventilation mesh 170 attached to the cover body 200 and/or the bottom wall 120 and covering the leakage hole 106, the leakage hole 106 is communicated with the sound-absorbing cavity 103, and the aperture of the leakage hole 106 is smaller than the aperture of the filling hole 105.

Referring to fig. 3 and 4, in the present embodiment, the sounding unit 300 is provided with a leakage portion 324, the sounding unit 324 is sequentially communicated with the leakage hole 324 through the leakage portion 324, the air-permeable partition 400 and the sound-absorbing cavity 103, and the magnetic bowl 321 and the basin stand 312 are at least partially spaced to form the leakage portion 324.

The bottom wall 120 and the retaining wall 140 in this embodiment are integrally formed, preferably integrally injection molded, to simplify the production and assembly.

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 400 in this embodiment is an air-permeable mesh, and the air-permeable partition 400 may also be a non-woven fabric, a nylon woven fabric, a wool woven fabric, a metal mesh, or paper.

The loudspeaker module in this embodiment not only can be convenient produce the assembly, the space that utilizes cavity 101 that moreover can the maximize is used for filling sound absorbing material to improvement acoustic performance that can be fine. And be provided with brace 3211 on the sound production monomer 300, and ventilative barrier 400 supports to press on brace 3211, through brace 3211 to ventilative barrier 400's support, can prevent that ventilative barrier 400 from pasting on the surface of sound production monomer 300 because of warping, and then can prevent to influence the acoustic performance of speaker module because of ventilative barrier 400's deformation, and ventilative barrier 400's assembly is also more convenient, and the acoustic performance of speaker module in this embodiment is more stable.

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 loudspeaker module comprises a bracket, a cover body and a breathable isolating piece, wherein the cover body covers the bracket and forms a cavity with the bracket in an enclosing manner; the ventilating partition piece divides the cavity into an accommodating cavity and a sound absorbing cavity, and the loudspeaker module further comprises a sounding monomer accommodated in the accommodating cavity; ventilative separator lid is located sound production monomer and with the support encloses to close and forms hold the chamber, the sound production monomer is last be close to one side of ventilative separator is provided with to the brace rod that ventilative separator protrusion extends, ventilative separator supports to press on the brace rod.

2. The speaker module of claim 1, wherein: the support comprises a bottom shell and a retaining wall extending from the bottom shell to the cover body, the periphery of the sounding monomer is abutted against the retaining wall, and the breathable isolating piece comprises a body part which is covered on one side of the sounding monomer away from the bottom shell, an extending part which is bent and extended from the periphery of the body part to be close to the bottom shell, and a fixing part which is extended from the extending part to be away from the sounding monomer and is fixed on the retaining wall; the body part is abutted against the support rib.

3. The speaker module as claimed in claim 2, wherein: the sound production monomer includes vibration system and drive the magnetic circuit of vibration system vibration, ventilative isolator covers the sound production monomer is close to one side of magnetic circuit, magnetic circuit include with the magnetic bowl that the vibration system interval set up, the brace rod sets up the magnetic bowl is close to on one side of ventilative isolator.

4. A speaker module as claimed in claim 3, wherein: the supporting ribs are provided with a plurality of supporting ribs, and the supporting ribs are arranged on the magnetic bowl at intervals.

5. A speaker module as claimed in claim 3, wherein: the drain pan includes the diapire and certainly the periphery of diapire moves towards the lateral wall that the lid extended formation, the barricade certainly the diapire to the lid extends to form and is located the lateral wall is close to the free one side of sound production, the barricade deviates from a lateral wall is close to the lateral wall is sunken to form and is supported the step, vibration system butt is in support on the step, the fixed part is fixed in the barricade is close to one of lid is served.

6. The speaker module of claim 5, wherein: the vibration system comprises a vibration diaphragm which is opposite to the magnetic bowl at an interval and faces the bottom wall, the vibration diaphragm and the bottom wall form a front sound cavity at an interval, and a sound outlet channel which is communicated with the front sound cavity and the outside is formed in the side wall in a penetrating mode.

7. A loudspeaker module according to any one of claims 1 to 6, wherein: the support ventilative separator and the lid encloses to close and forms the sound-absorbing cavity, the sound-absorbing cavity with hold the chamber and set up side by side, the sound-absorbing intracavity intussuseption is filled with sound-absorbing material.

8. The speaker module as claimed in claim 7, wherein: the cover body and/or the bracket are/is provided with an injection hole, the injection hole is communicated with the sound absorption cavity, and the sound absorption material is injected into the sound absorption cavity through the injection hole.

9. The speaker module of claim 1, wherein: the lid and/or seted up on the support and let out the leakage hole, let out the leakage hole with the sound-absorbing cavity intercommunication, the sound production monomer is equipped with reveals the portion, the sound production monomer passes through in proper order reveal the portion ventilative separator and the sound-absorbing cavity with let out the leakage hole intercommunication.

10. The speaker module as recited in claim 9, wherein: the sound production monomer include the basin frame and fixed stay in the vibration system and the magnetic circuit of basin frame, magnetic circuit includes the magnetism bowl, the magnetism bowl with at least part interval of basin frame forms the portion of revealing.