CN213213848U

CN213213848U - Loudspeaker box

Info

Publication number: CN213213848U
Application number: CN202021852156.XU
Authority: CN
Inventors: 冯国袖; 吴树文; 胡橙
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2020-08-27
Filing date: 2020-08-27
Publication date: 2021-05-14
Anticipated expiration: 2030-08-27
Also published as: WO2022041423A1

Abstract

The utility model provides a loudspeaker box, it include the casing with fixed accept in sound production monomer in the casing, sound production monomer with the casing encloses into the back sound chamber jointly, sound production monomer is including the vibrating diaphragm that is used for vibrating the sound production, the casing is equipped with sound outlet and the opening that runs through above that, sound production monomer is equipped with one side orientation of vibrating diaphragm the sound outlet sets up, the opening will back sound chamber and external intercommunication, sound production monomer still is fixed in including supporting the secondary vibrating diaphragm of casing, secondary vibrating diaphragm covers completely the opening. Compared with the prior art, the utility model discloses a speaker box acoustic performance is better.

Description

Loudspeaker box

[ technical field ] A method for producing a semiconductor device

The utility model relates to an electroacoustic conversion field especially relates to an apply to speaker box of portable mobile electronic product.

[ background of the invention ]

The loudspeaker box is widely applied to portable mobile electronic products, such as mobile phones, so that audio signals are converted into sound to be played, the loudspeaker box is high in loudness, and the low-frequency sound effect is good.

The loudspeaker box in the related art comprises a front cover, a rear cover and a sound generating unit, wherein the front cover and the rear cover are arranged on the front cover and jointly enclose an accommodating space, the sound generating unit is accommodated in the accommodating space, the sound generating unit divides the accommodating space into a front cavity and a rear cavity, the front cavity is used for generating sound, and the rear cavity is used for improving acoustic performance, particularly low-frequency acoustic performance.

However, when the speaker box of the related art is applied to the terminal, the thickness space left for the speaker box is limited due to too many parts on the whole terminal, so that the volume of the rear cavity is limited, and the purpose of improving the performance cannot be achieved.

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

[ Utility model ] content

An object of the utility model is to provide a speaker box that acoustic performance is better, especially low frequency acoustic performance is better.

In order to achieve the above object, the present invention provides a speaker box, which includes a housing and a sound generating unit fixedly housed in the housing, wherein the sound generating unit and the housing together enclose a rear sound cavity, and the sound generating unit includes a vibrating diaphragm for vibrating sound; the casing is equipped with sound outlet and the opening that runs through it, the sound production monomer is equipped with one side orientation of vibrating diaphragm the sound outlet sets up, the opening will back sound chamber and external intercommunication, the sound production monomer is fixed in still including supporting the secondary vibrating diaphragm of casing, the secondary vibrating diaphragm covers completely the opening.

Preferably, the casing includes the protecgulum, the lid is located the back lid of protecgulum, sound production monomer supports and is fixed in the protecgulum, the sound outlet set up in the protecgulum and with the vibrating diaphragm is just to setting up, the opening set up in the back lid and with the sound production monomer is just to setting up, vice vibrating diaphragm is fixed in the back lid is kept away from sound production monomer one side.

Preferably, the protecgulum include with the relative protecgulum that sets up of sound production monomer, by the periphery of protecgulum to the protecgulum orientation extend and with the protecgulum that the protecgulum was fixed extends the wall and by the protecgulum is kept away from sound production monomer one side to the sunken recess that forms of sound production monomer orientation, the sound outlet runs through the tank bottom of recess sets up, sound production monomer supports and is fixed in the tank bottom of recess, the diaphragm part warp the sound outlet extends to in the recess.

Preferably, the front cover further comprises an auxiliary cover plate, wherein the auxiliary cover plate comprises a body plate opposite to the vibrating diaphragm and arranged at an interval, a supporting plate bent and extended from the periphery of the body plate, and a side sound port penetrating through the supporting plate; at least one side of the groove is communicated with the extending wall of the front cover, the supporting plate is supported and fixed at the groove bottom of the groove and arranged around the sound outlet, the auxiliary cover plate, the groove bottom of the groove and the vibrating diaphragm jointly enclose a front sound cavity, and the front sound cavity is communicated with the outside through the side sound outlet.

Preferably, one side of the body plate, which is far away from the vibrating diaphragm, is flush with one side of the front cover plate, which is far away from the vibrating diaphragm.

Preferably, the speaker box further comprises a sealing ring fitted to the housing and surrounding the side sound port.

Preferably, the sealing ring is simultaneously attached and fixed to the front cover extension wall, the supporting plate and the body plate.

Preferably, the housing is made of a metal material.

Preferably, the secondary diaphragm is fixed to the housing by injection molding, hot pressing or adhesion.

Compared with the prior art, the utility model discloses an in the speaker box set up on the casing the opening makes the opening will back sound chamber and external intercommunication are fixed in through setting up the support the auxiliary vibrating diaphragm of casing, the auxiliary vibrating diaphragm covers completely the opening, above-mentioned structure are under the prerequisite that does not increase the whole thickness of speaker box, when the speaker box fortune is used for the terminal, the inside cavity of terminal complete machine has fully effectually been utilized to the auxiliary vibrating diaphragm of flexible construction, and the volume in order to increase back sound chamber is adjusted in the flexibility to the effectual acoustic performance who promotes the speaker box.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work, wherein:

fig. 1 is a schematic perspective view of a speaker box according to the present invention;

fig. 2 is an exploded schematic view of a part of the three-dimensional structure of the speaker box of the present invention;

fig. 3 is a sectional view taken along line a-a in fig. 1.

[ detailed description ] embodiments

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a speaker box 100, which includes a housing 1, a sound generating unit 2 and an auxiliary diaphragm 3.

The sounding monomer 2 is fixedly contained in the shell 1 and comprises a vibrating diaphragm 21 for vibrating and sounding. The sound generating unit 2 and the shell 1 jointly enclose a rear sound cavity 101 for improving acoustic performance, especially low-frequency acoustic performance.

Casing 1 is equipped with sound outlet 10 and opening 20 that runs through on it, sound production monomer 2 is equipped with one side orientation of vibrating diaphragm 21 sound outlet 10 sets up for the sound production. The through hole 20 communicates the rear sound cavity 101 with the outside, and the sub-diaphragm 3 is supported and fixed on the casing 1 and completely covers the through hole 20. Therefore, on the premise of not increasing the whole thickness of the loudspeaker box 100, when the loudspeaker box 100 is applied to a terminal, the auxiliary diaphragm 3 fully and effectively utilizes the internal cavity of the whole terminal, and flexibly adjusts the volume of the rear sound cavity 101 to effectively improve the acoustic performance of the loudspeaker box 100.

Specifically, the housing 1 includes a front cover 11 and a rear cover 12 covering the front cover 11. The sounding monomer 2 is supported and fixed on the front cover 11, and the sound outlet 10 is arranged on the front cover 11 and opposite to the vibrating diaphragm 21, so that a front sounding structure is formed.

Opening 20 sets up in back lid 12 and with sound production monomer 2 is just to setting up, secondary vibrating diaphragm 3 is fixed in back lid 12 is kept away from one side of sound production monomer 2. After the speaker box 100 is applied to a terminal, the secondary diaphragm 3 not only realizes the sealing of the rear acoustic cavity 101, but also effectively utilizes the cavity space inside the whole terminal because of the vibration performance of the secondary diaphragm due to the flexibility, thereby greatly improving the acoustic performance, especially the low-frequency acoustic performance, of the speaker box 100.

In this embodiment, the sub-diaphragm 3 is fixed to the housing 1 by injection molding, hot pressing, or adhesion.

Preferably, the front cover 11 includes a front cover plate 111 disposed opposite to the sounding unit 2, a front cover extension wall 112 extending from the periphery of the front cover plate 111 to the rear cover 12 and fixed to the rear cover 12, and a groove 113 formed by recessing the sounding unit 2 in the direction from one side of the sounding unit 2 away from the front cover plate 111.

The sound outlet 10 penetrates through the groove bottom 1131 of the groove 113, the sound-producing unit 2 is supported and fixed at one side of the groove bottom 1131 of the groove 113 close to the back cover 12, and the vibrating diaphragm 21 partially extends into the groove 113 through the sound outlet 10. This structural arrangement makes the overall thickness of the speaker box 100 limited by the distance between the front cover 11 and the rear cover 12, without an additional increase in thickness, and sufficiently sets the overall space of the cabinet 1 to the space of the rear sound chamber 101 to improve the low-frequency acoustic performance.

The front cover 11 further includes an auxiliary cover plate 114, where the auxiliary cover plate 114 includes a body plate 1141 facing the diaphragm 21 and disposed at an interval, a supporting plate 1142 bent and extended from the periphery of the body plate 1141, and a side sound port 1143 disposed through the supporting plate 1142.

At least one side of the groove 113 is communicated with the front cover extension wall 112, the supporting plate 1142 is supported and fixed on the groove bottom 1131 of the groove 113 and is disposed around the sound outlet 10, the auxiliary cover plate 114, the groove bottom 1131 of the groove 113 and the diaphragm 21 together enclose a front sound cavity 102, and the side sound port 1143 communicates the front sound cavity 102 with the outside, so as to form a side sound structure.

Preferably, one side of the body plate 1141 away from the diaphragm 21 is flush with one side of the front cover plate 111 away from the diaphragm 21. The loudspeaker box 100 has good consistency of the whole appearance structure and good appearance aesthetic feeling, and the whole thickness of the loudspeaker box 100 can not be additionally increased.

In this embodiment, the speaker box 100 further includes a sealing ring 4 attached to the housing 1 and surrounding the side sound port 1143. When the speaker box 100 is assembled at a terminal, the sealing ring 4 is used for abutting the shell 1 with the terminal to form a seal, and meanwhile, the buffer impact-resistant effect is achieved, and the reliability is improved.

Specifically, the sealing ring 4 is simultaneously attached and fixed to the front cover extension wall 112, the supporting plate 1142 and the body plate 1141. The structure increases the binding surface of the sealing ring 4 and the shell 1, increases the reliability, and simultaneously plays a role in strengthening the connection strength of the auxiliary cover plate 114 and the front cover extension wall 112, thereby improving the structural assembly stability.

Further, in the present embodiment, the housing 1 is made of a metal material, so that the structural strength of the housing is ensured, and the volume of the rear acoustic cavity 101 can be further increased compared to a plastic housing.

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. The utility model provides a loudspeaker box, its include the casing with fixed accept in sound production monomer in the casing, sound production monomer with the casing encloses into the back sound chamber jointly, sound production monomer is including the vibrating diaphragm that is used for the vibration sound production, a serial communication port, the casing is equipped with sound outlet and the opening that runs through on it, sound production monomer is equipped with one side orientation of vibrating diaphragm the sound outlet sets up, the opening will back sound chamber and external intercommunication, sound production monomer is still fixed in including supporting the secondary vibrating diaphragm of casing, secondary vibrating diaphragm covers completely the opening.

2. The loudspeaker box of claim 1, wherein the casing comprises a front cover and a rear cover covering the front cover, the sound-producing unit is supported and fixed on the front cover, the sound outlet is arranged on the front cover and is opposite to the vibrating diaphragm, the opening is arranged on the rear cover and is opposite to the sound-producing unit, and the sub-diaphragm is fixed on one side of the rear cover, which is far away from the sound-producing unit.

3. The speaker box according to claim 2, wherein the front cover includes a front cover plate disposed opposite to the sound generating unit, a front cover extending wall extending from a periphery of the front cover plate toward the rear cover and fixed to the rear cover, and a recess formed by recessing a side of the front cover plate away from the sound generating unit toward the sound generating unit, the sound outlet penetrates through a bottom of the recess, the sound generating unit is supported and fixed to a bottom of the recess, and the diaphragm portion extends into the recess through the sound outlet.

4. The loudspeaker box of claim 3, wherein the front cover further comprises an auxiliary cover plate, the auxiliary cover plate comprises a body plate facing and spaced apart from the diaphragm, a support plate extending from the periphery of the body plate in a bent manner, and a side sound port penetrating through the support plate; at least one side of the groove is communicated with the extending wall of the front cover, the supporting plate is supported and fixed at the groove bottom of the groove and arranged around the sound outlet, the auxiliary cover plate, the groove bottom of the groove and the vibrating diaphragm jointly enclose a front sound cavity, and the front sound cavity is communicated with the outside through the side sound outlet.

5. A loudspeaker cabinet according to claim 4, wherein the side of the body plate remote from the diaphragm is flush with the side of the front cover plate remote from the diaphragm.

6. A loudspeaker enclosure according to claim 4, further comprising a sealing ring fitted to the housing and surrounding the side sound port.

7. The speaker cabinet of claim 6, wherein the gasket is simultaneously secured to the front cover extension wall, the support plate and the body plate.

8. A loudspeaker enclosure according to claim 1, wherein the housing is of a metallic material.

9. A loudspeaker enclosure as claimed in claim 1, wherein the secondary diaphragm is fixed to the housing by injection moulding, hot pressing or gluing.