CN108810769B

CN108810769B - Loudspeaker module

Info

Publication number: CN108810769B
Application number: CN201810880417.XA
Authority: CN
Inventors: 张伏虎; 陈志竹; 王程良; 刘莎莎
Original assignee: AAC Optoelectronic Changzhou Co Ltd
Current assignee: Jiangsu Jicui Zhongyi Technology Industry Development Co ltd; AAC Microtech Changzhou Co Ltd
Priority date: 2018-08-03
Filing date: 2018-08-03
Publication date: 2021-02-26
Anticipated expiration: 2038-08-03
Also published as: CN108810769A

Abstract

The loudspeaker module of the invention comprises a shell and a loudspeaker monomer with a vibrating diaphragm accommodated in the shell, wherein the shell comprises a top wall, a bottom wall opposite to the top wall and a side wall for connecting the top wall and the bottom wall, the vibrating diaphragm of the loudspeaker monomer is arranged opposite to the bottom wall, the loudspeaker module further comprises a supporting step which extends from the inner surface of the shell to the loudspeaker monomer and fixes the loudspeaker monomer, one side of the loudspeaker monomer close to the vibrating diaphragm is arranged on the supporting step, and accept the chamber with the monomer and cut apart into preceding acoustic chamber and back acoustic chamber, support the step, form preceding acoustic chamber between diapire and the vibrating diaphragm, speaker monomer, lateral wall, support and form back acoustic chamber between step and the roof, support the step at least partially and relative just interval setting formation with the passageway of revealing of preceding acoustic chamber intercommunication with the diapire, it is provided with the intercommunication on the support step and reveals the hole of revealing passageway and back acoustic chamber to run through, it has waterproof ventilated membrane to reveal the hole facing. Therefore, gas leakage can be guaranteed, the air pressure is stable, meanwhile, the waterproof and dustproof effects are achieved, and the reliability of the product is improved.

Description

Loudspeaker module

Technical Field

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

Background

With the advent of the mobile internet era, the electronic products are updated more and more rapidly, and people have higher and higher requirements on various aspects of performances of the electronic products, one of which is a high-quality music function.

The speaker module of the prior art generally includes a housing and a speaker unit accommodated in the housing, and generally improves the low frequency response of a product by enlarging an acoustic cavity of the speaker module, thereby improving the acoustic performance of the product. In order to achieve the leakage effect, it is usually necessary to provide a leakage hole in the enlarged acoustic cavity, which easily affects the waterproof and dustproof performance of the product, and thus the reliability of the product.

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

Disclosure of Invention

The present invention provides a speaker module for solving the above technical problems, which can effectively achieve a waterproof function and improve a low frequency sound effect.

The concrete scheme does, provides a speaker module, and is preferred, support the step including protruding locate the diapire reveal the platform and with reveal the platform connect and establish and around the spacing wall in speaker monomer periphery, it includes certainly the diapire court the extension wall that the roof direction extends and with extend the wall connection and with the relative support wall of diapire, the support wall butt the speaker module is close to one side edge of vibrating diaphragm, support the wall the extension arm reaches enclose between the diapire reveal the passageway, the hole of revealing runs through the support wall and with reveal the passageway intercommunication, waterproof ventilated membrane attached on the support wall.

Preferably, the air holes are through holes penetrating through the support wall along the vibration direction of the diaphragm.

Preferably, the top wall is provided with air holes in a penetrating mode, and a protective film covering the air holes is arranged on the inner surface of the top wall.

Preferably, the diapire include with the main part that the lateral wall links to each other, set up on the main part and run through be formed with the speaker monomer reaches the opening that the platform is relative leaks, the diapire further includes to cover and establishes apron on the opening, the support wall with the apron is relative and the interval sets up and forms leak the passageway.

Preferably, the diapire is kept away from one side of leakage platform to the roof direction extends and forms the partition wall, the partition wall is kept away from one side of diapire covers there is the sound-transmitting omentum, the partition wall reaches the sound-transmitting omentum will the back sound chamber is cut apart into main back chamber and supplementary sound chamber, main back chamber with the speaker monomer corresponds and the warp the leakage hole with preceding sound chamber intercommunication, supplementary sound chamber by the sound-transmitting omentum the partition wall reaches the diapire encloses.

Preferably, a sound absorbing material is arranged in the auxiliary sound cavity.

Preferably, the side wall is provided with a sound outlet, and the sound outlet is communicated with the front sound cavity.

The loudspeaker module comprises a shell with a single body containing cavity and a loudspeaker single body with a vibrating diaphragm contained in the shell, wherein the shell comprises a top wall, a bottom wall opposite to the top wall and a side wall connecting the top wall and the bottom wall, the vibrating diaphragm of the loudspeaker single body is arranged opposite to the bottom wall, the loudspeaker module further comprises a supporting step which extends from the inner surface of the shell to the loudspeaker single body and fixes the loudspeaker single body, one side of the loudspeaker single body close to the vibrating diaphragm is arranged on the supporting step and divides the single body containing cavity into a front sound cavity and a rear sound cavity, a front sound cavity is formed among the supporting step, the bottom wall and the vibrating diaphragm, a rear sound cavity is formed among the loudspeaker single body, the side wall, the supporting step and the top wall, and at least part of the supporting step is opposite to the bottom wall and is arranged at intervals to form a leakage channel communicated with the front sound cavity, the supporting step is provided with a leakage hole which is used for communicating the leakage channel with the rear sound cavity in a penetrating mode, and a waterproof breathable film is covered on the leakage hole in an attached mode. Therefore, gas leakage can be guaranteed, the air pressure is stable, meanwhile, the waterproof and dustproof effects are achieved, and the reliability of the product is improved.

Drawings

FIG. 1 is a schematic view of an assembly structure of a speaker module according to the present invention;

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

FIG. 3 is a cross-sectional view of the speaker module of the present invention taken along line A-A;

fig. 4 is a cross-sectional view of the speaker module of the present invention taken along line a-a.

Detailed Description

The invention is further described below with reference to the accompanying drawings.

As shown in fig. 1 and 2, the present invention provides a speaker module 100 including a housing 1 having an accommodating space and a speaker unit 2 accommodated in the accommodating space.

The speaker unit 2 is an electromagnetic speaker, and includes a diaphragm 21 and a voice coil (not shown) for driving the diaphragm 21 to vibrate. Under the working state, the vibrating diaphragm vibrates to produce sound and pushes the gas to compress to produce sound waves.

The housing 1 includes a top wall 101, a bottom wall 102 and a side wall 103 connecting the top wall 101 and the bottom wall 102, which enclose an accommodating space. Further, the speaker module further includes a partition wall 104 for partitioning the accommodation space to form an accommodating chamber, and a support step 105 for fixing the speaker unit 2.

The partition walls 104 enclose a single body receiving cavity. One side of the partition wall 104, which is far away from the bottom wall 102, is covered with an acoustically transparent mesh film 6, the partition wall 104 and the acoustically transparent mesh film 6 divide the acoustic cavity behind the inner space of the casing 1 into a main rear cavity and an auxiliary acoustic cavity 1103, the main rear cavity corresponds to the speaker unit, and the auxiliary acoustic cavity 1103 is enclosed by the acoustically transparent mesh film 6, the partition wall 104 and the bottom wall 102.

An acoustic absorbent material may be disposed within auxiliary acoustic cavity 1103 for enhancing low frequency response or for other purposes that enhance the sound quality of the product. The speaker unit 2 is disposed in the unit accommodating chamber. Specifically, the side of the speaker unit 2 close to the diaphragm 21 is disposed on the support step 105, and the diaphragm 21 of the speaker unit 2 is disposed opposite to the bottom wall 102, so as to form a front acoustic cavity 1101 and a rear acoustic cavity 1102. Specifically, a rear acoustic cavity 1102 is formed among the speaker unit 2, the side wall 103 and the top wall 101; the support step 105, the bottom wall 102 and the diaphragm 21 form a front acoustic cavity 1102 therebetween. The top wall 101 is provided with an air vent communicated with the rear acoustic cavity 1102. The side wall 103 is provided with a sound outlet 1031, the sound outlet 1031 communicating with the front sound chamber 1102.

As shown in fig. 3 and 4, the supporting step 105 includes a leakage platform having an abutting surface protruding from the bottom wall 102 and a limiting wall 1052 connected to the leakage platform and disposed around the periphery of the speaker unit. The leakage platform includes an extension wall extending from the bottom wall 102 toward the top wall 101 and a support wall 1051 connected to the extension wall and opposing the bottom wall 102. The bottom of the speaker unit 2 is fixed to the support wall 1051, and the side surface of the speaker unit 2 abuts against the stopper wall 1052, thereby achieving the fixation of the speaker unit 2 while also separating the front and

rear sound chambers

1101 and 1102.

The side of the support step 105 remote from the abutment surface is provided with a leakage channel 106 extending in the direction of the side wall 103. Specifically, the leakage path 106 is formed from the bottom of the support wall 1051, penetrates the support wall 1051, and extends toward the speaker unit 2. The support wall 1051 is provided with a leak hole 107 communicating with the leak passage 106. Specifically in the present embodiment, the leak hole 107 is a through hole that penetrates the support wall 1051 in the vibration direction of the diaphragm 21. Preferably, the leakage holes 107 are formed corresponding to the ventilation holes. Through the leakage channel 106 and the leakage hole 107, the air pressure in the front acoustic cavity 1101 can be leaked into the rear acoustic cavity through the leakage channel 106 and the leakage hole 107, and further leaked into the external environment through the leakage hole on the top wall 101, so as to avoid the internal air pressure imbalance from affecting the acoustic performance of the product. In addition, the front acoustic cavity air pressure is guided to the rear acoustic cavity through the leakage channel 106, so that the occupied space can be avoided, sufficient resonance can be realized with the rear cavity, and a better acoustic effect is achieved.

Further, the supporting wall 1051 is covered with a waterproof breathable film 3 covering the leakage hole 107, and the top wall 101 is provided with a protective film 4 covering the breathable hole, so that the breathability of the product is realized, the waterproof and dustproof performance is guaranteed, and the reliability of the product is improved.

The housing 1 may be an integral structure or a separate structure, and specifically in this embodiment, the housing 1 includes a lower housing 11, an upper housing 12, and a cover plate 13. Specifically, in the present embodiment, the bottom wall 102 is provided on the lower case 11, the top wall 101 is provided on the upper case 12, the bottom wall 102 includes a main body portion connected to the side wall 103, an opening 110 formed through the main body portion and facing the speaker unit 2 and the leak table is provided, the cover plate 13 is provided on the opening 110, and the support wall 1051 is provided facing the cover plate 13 with a gap to form a leak path. The cover plate 13 covers the speaker unit 2 and the waterproof breathable film 3.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. A loudspeaker module is characterized by comprising a shell with a single body containing cavity and a loudspeaker single body with a vibrating diaphragm, wherein the loudspeaker single body is contained in the shell, the shell comprises a top wall, a bottom wall opposite to the top wall and a side wall for connecting the top wall and the bottom wall, the vibrating diaphragm of the loudspeaker single body is arranged right opposite to the bottom wall, the loudspeaker module further comprises a supporting step, the supporting step extends from the inner surface of the shell to the loudspeaker single body and fixes the loudspeaker single body, one side, close to the vibrating diaphragm, of the loudspeaker single body is arranged on the supporting step and divides the single body containing cavity into a front sound cavity and a rear sound cavity, a front sound cavity is formed among the supporting step, the bottom wall and the vibrating diaphragm, a rear sound cavity is formed among the loudspeaker single body, the side wall, the supporting step and the top wall, at least part of the supporting step is opposite to the bottom wall and is arranged at intervals to form a leakage channel communicated with the front sound cavity, a leakage hole for communicating the leakage channel with the rear sound cavity is arranged on the supporting step in a penetrating manner, and a waterproof breathable film is attached to the leakage hole; the top wall is provided with an air hole in a penetrating manner, the inner surface of the top wall is provided with a protective film covering the air hole, the side wall is provided with a sound outlet, and the sound outlet is communicated with the front sound cavity;

support the step including protruding locate the diapire reveal the platform and with reveal the platform connect and establish and around speaker monomer periphery and with the spacing wall of speaker monomer butt, it includes certainly to reveal the platform the diapire court the extension wall that the roof direction extends and with extend the wall connection and with the relative support wall of diapire, support the wall butt speaker monomer is close to one side edge of vibrating diaphragm, support the wall the extension arm reaches enclose between the diapire reveal the passageway, it runs through to reveal the hole support the wall and with reveal the passageway intercommunication, waterproof ventilated membrane is attached on the support wall.

2. The speaker module as claimed in claim 1, wherein the leakage hole is a through hole penetrating the support wall in a vibration direction of the diaphragm.

3. The speaker module as claimed in claim 1, wherein the bottom wall includes a main body connected to the side wall, the main body has an opening formed therethrough opposite to the speaker unit and the leakage platform, the bottom wall further includes a cover plate covering the opening, and the support wall is opposite to the cover plate and spaced apart from the cover plate to form the leakage path.

4. The speaker module as claimed in claim 1, wherein a side of the bottom wall away from the leakage platform extends toward the top wall to form a partition wall, a side of the partition wall away from the bottom wall is covered with an acoustically transparent mesh, the partition wall and the acoustically transparent mesh divide the rear acoustic chamber into a main rear chamber and an auxiliary acoustic chamber, the main rear chamber corresponds to the speaker unit and is communicated with the front acoustic chamber through the leakage hole, and the auxiliary acoustic chamber is enclosed by the acoustically transparent mesh, the partition wall and the bottom wall.

5. The speaker module as recited in claim 4, wherein a sound absorbing material is disposed within the auxiliary acoustic cavity.