CN211321489U

CN211321489U - Loudspeaker box

Info

Publication number: CN211321489U
Application number: CN202020046428.0U
Authority: CN
Inventors: 吴军; 魏威
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2020-01-09
Filing date: 2020-01-09
Publication date: 2020-08-21
Anticipated expiration: 2030-01-09
Also published as: WO2021138953A1

Abstract

The utility model provides a loudspeaker box, which comprises a lower cover, an upper cover forming an accommodating space with the lower cover, a sounding monomer and a ventilating isolation component; the upper cover comprises an upper cover body and a supporting wall, the sound-producing single body is supported and fixed on the supporting wall and divides the accommodating space into a front cavity and a rear cavity, and the rear cavity is divided into a first rear cavity and a second rear cavity which are mutually communicated by air by the ventilation isolation assembly; the breathable isolation assembly comprises a support and a breathable isolation piece, the support is covered on the sounding single body and fixed on the supporting wall, the support is provided with a leakage hole penetrating through the support, and the breathable isolation piece is attached to the support and completely covers the leakage hole; the sound particles are filled in the second rear cavity, and the sound particles are packaged in the second rear cavity through the breathable isolation assembly. Compared with the prior art, the utility model discloses a speaker box filling is efficient, and low frequency acoustic performance is excellent.

Description

Loudspeaker box

[ technical field ] A method for producing a semiconductor device

The utility model relates to an electroacoustic conversion equipment technical field especially relates to a loudspeaker box.

[ background of the invention ]

With the advent of the mobile internet age, the number of smart mobile devices is increasing. Among the mobile devices, the mobile phone is undoubtedly the most common and portable mobile terminal device. At present, the functions of a mobile phone are very diverse, one of which is a high-quality music function, and thus, a speaker box for playing sound is widely applied to the current smart mobile devices.

The loudspeaker box in the related art comprises an upper cover, a lower cover, a sound production single body and a ventilating isolating piece, wherein the lower cover is assembled with the upper cover to form an accommodating space; the sound production unit and the upper cover enclose a front cavity, the sound production unit, the upper cover and the lower cover jointly enclose a rear cavity, a blocking wall is formed in the rear cavity, the breathable partition piece is attached to the blocking wall and jointly divides the rear cavity into a first rear cavity and a second rear cavity which are mutually communicated with air, and the sound production unit is partially located in the first rear cavity.

However, in the related art speaker box, the baffle wall and the air-permeable partition encapsulate the sound-absorbing particles in the second rear cavity to form the DBASS space serving as a virtual sound cavity, but the rear cavity cannot be efficiently utilized due to design limitations of the baffle wall structure, thereby limiting low-frequency acoustic performance of the speaker box.

Therefore, it is necessary 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 filling efficiency is high, low frequency acoustic performance is good.

In order to achieve the above object, the present invention provides a speaker box, which comprises a lower cover, an upper cover covering the lower cover and enclosing an accommodating space, a sounding unit and a ventilating isolation assembly accommodated in the accommodating space; the upper cover comprises an upper cover body covering the lower cover and an annular supporting wall which is convexly extended towards the lower cover from the upper cover body, the sound-producing single body is supported and fixed on the supporting wall and divides the accommodating space into a front cavity and a rear cavity, the breathable isolating component is positioned in the rear cavity and divides the rear cavity into a first rear cavity and a second rear cavity which are mutually communicated with air, the breathable isolating component comprises a support and a breathable isolating piece, the support is covered with the sound-producing single body and fixed on the supporting wall, the support is provided with a leakage hole penetrating through the breathable isolating piece, and the breathable isolating piece is attached to and fixed on the support and completely covers the leakage hole; the sound-absorbing particles are filled in the second rear cavity, and the sound-absorbing particles are packaged in the second rear cavity by the breathable isolation component.

Preferably, a glue containing groove for containing glue is formed between the supporting wall and the sound generating unit, and the support and the sound generating unit are fixed on the supporting wall through the glue support.

Preferably, the support wall include by the upper cover body to the first support wall that the lower cover direction protrusion extends and by the outer peripheral edges of first support wall to the second support wall that the lower cover direction extends, the sound production monomer supports and is fixed in first support wall is close to the one end of lower cover, just the sound production monomer with the second supports the wall interval and sets up.

Preferably, the support comprises a support body arranged opposite to the sounding monomer and a first annular extension part bent and extended from the periphery of the support body to the direction close to the upper cover; the first extension part is positioned between the sound generating single body and the second support wall; the leakage hole penetrates through the bracket body and the first extending part at the same time.

Preferably, the breathable isolation piece comprises a breathable isolation piece body attached to the support body and a second extension portion bent and extended from the breathable isolation piece body towards the upper cover direction, and the second extension portion is fixed to the first extension portion.

Preferably, the leakage holes include two, and the two leakage holes are respectively opened at two opposite sides of the bracket.

Preferably, the bracket is made of steel sheets.

Preferably, the speaker box further comprises a conductive terminal electrically connected with the sound generating unit; the bracket also comprises a yielding groove penetrating through the first extension part; the conductive terminal extends from the first rear cavity to the second rear cavity through the abdicating groove.

Compared with the prior art, the utility model discloses a loudspeaker box does not additionally set up barricade, picture peg isotructure in the back intracavity in order to form the packing space of filling sound absorption granule, but directly covers around the sound production monomer and establishes the ventilative isolating component that has ventilative isolating piece to through glue fixed this ventilative isolating component in the lump in fixed sound production monomer's glue containing space, this structure makes ventilative isolating component keep away from the second back intracavity of sound production monomer one side is filled and is inhaled whole as virtual sound chamber behind the sound granule, makes the volume of first back chamber as little as possible, and makes the volume of second back chamber as big as possible, very big degree has improved the back chamber promptly as the effective utilization ratio in virtual sound chamber.

[ 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 schematic view of the assembly structure of the speaker box of the present invention without the lower cover;

FIG. 4 is a schematic perspective view of the ventilation isolation assembly of the present invention;

FIG. 5 is a cross-sectional view taken along line A-A of FIG. 1;

fig. 6 is an enlarged view of a portion B shown in fig. 5.

[ 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. 1-6, the present invention provides a speaker box 100, which includes a lower cover 1, an upper cover 2, a sound generating unit 3, a ventilation isolation assembly 4 and a conductive terminal 5. The lower cover 1 is covered on the upper cover 2 and forms an accommodating space 10 together with the upper cover.

The sounding single body 3 is accommodated in the accommodating space 10 and supported on the upper cover 2.

Specifically, the upper cover 2 includes an upper cover body 21 covering the lower cover 1, an annular support wall 22 protruding from the upper cover body 21 in the lower cover direction, and a sound guide channel 23 formed in the upper cover body 21.

In the present embodiment, the supporting wall 22 includes a first supporting wall 221 that protrudes from the upper cover body 21 toward the lower cover 1 and a second supporting wall 222 that extends from an outer peripheral edge of the first supporting wall 221 toward the lower cover 1, that is, the first supporting wall 221 and the second supporting wall 222 form a supporting step structure.

The sound generating unit 3 is supported and fixed on the supporting wall 22 and divides the accommodating space 10 into a front cavity 101 and a rear cavity 102. In this embodiment, the sounding unit 3 is supported and fixed on the first support wall 221 by glue.

Specifically, the sound generating unit 3 is supported and fixed at one end of the first supporting wall 221 close to the lower cover 1, and the sound generating unit 3 and the second supporting wall 222 are arranged at intervals, that is, supported and fixed on a supporting step structure formed by the first supporting wall 221 and the second supporting wall 222. The sound production single body 3 and the second support arm 222 form a glue containing groove 8 at intervals, and the sound production single body 3 and the lower cover 1 are fixed after glue is applied to the glue containing groove 8.

The sounding monomer 3 comprises a vibrating diaphragm 31 used for vibrating sounding, the vibrating diaphragm 31 and the upper cover body 21 form a front sound cavity 6 at intervals, and the sound guide channel 23 communicates the front sound cavity 6 with the outside and jointly forms the front cavity 101 for forming a side sounding structure. The rear cavity 102 is defined by the sounding monomer 3, the upper cover 2 and the lower cover 1 together, and is used for improving low-frequency acoustic performance.

The air permeable barrier assembly 4 is positioned within the rear cavity 102 and divides the rear cavity 102 into a first rear cavity 1021 and a second rear cavity 1022 that are in air communication with each other. The sound production unit 3 is at least partially located in the first rear cavity 1021, the sound absorption particles 7 are filled in the second rear cavity 1022, and the air-permeable isolation component 4 encapsulates the sound absorption particles 7 in the second rear cavity 1022 to form a DBASS virtual sound cavity for further improving low-frequency acoustic performance.

Specifically, the air-permeable barrier assembly 4 includes a support 41 and an air-permeable barrier 42.

In the present embodiment, the bracket 41 is made of a steel sheet, and the bracket 41 is electrically isolated from the conductive terminal 5.

The support 41 is fixed on the support arm 22 and completely covers the sound generating unit 3, the support 41 is provided with a leakage hole 43 penetrating through the support 41, and the breathable isolating piece 42 is attached and fixed on the support 41 and completely covers the leakage hole 43.

The support 41 comprises a support body 411 arranged opposite to the sounding unit 3, a first annular extension part 412 bent and extended from the periphery of the support body 411 to the direction close to the upper cover 2, and a relief groove 413 penetrating through the first extension part 412; the first extension part 412 is located between the sound generating unit 3 and the second support wall 222; the leakage hole 43 penetrates both the holder body 411 and the first extension part 412.

The bracket 41 is fixed in the glue containing groove 8 on the outer periphery side of the sound generating unit 3 through glue, and the bracket 41 and the sound generating unit 3 are connected into a whole and solidified through the glue.

In this embodiment, the support 41 and the air-permeable isolating member 42 make the air-permeable isolating component 4 form a three-dimensional structure, so that the second rear cavity 1022 on the side of the air-permeable isolating component 4 away from the sound-generating unit 3 is filled with sound-absorbing particles 7 and then is entirely used as a DBASS virtual sound cavity. This structural arrangement makes the volume of the first back chamber 1021 as small as possible, and makes the volume of the second back chamber 1022 as large as possible, i.e., greatly improves the effective utilization of the back chamber 102 as a virtual acoustic chamber.

In this embodiment, the number of the leakage holes 43 is two, the two leakage holes 43 are respectively opened at two opposite sides of the bracket 41, the shape of the leakage holes 43 is not limited, and the leakage holes 413 may be designed according to actual conditions.

Specifically, the air-permeable partition 42 includes an air-permeable partition body 421 attached to the support body 411, and a second extending portion 422 bent and extended from the air-permeable partition body 421 toward the upper cover 2, and the second extending portion 422 is fixed to the first extending portion 412.

The conductive terminal 5 is electrically connected to the sound generating unit 3 and extends from the first back cavity 1021 to the second back cavity 1022, and extends to the outside of the speaker box 100 through the second back cavity 1022, so as to introduce an external electrical signal into the sound generating unit 3.

In this embodiment, the conductive terminal 5 extends from the first rear cavity 1021 to the second rear cavity 1022 through the receding groove 413. Of course, the conductive terminal 5 passes through when the groove 413 of stepping down extends the groove 413 of stepping down needs to form sealedly, avoids inhaling the sound granule 7 and follows the groove 413 of stepping down gets into first back chamber 1021.

The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.

Claims

1. A loudspeaker box comprises a lower cover, an upper cover, a sound production single body and a ventilation isolation assembly, wherein the upper cover is covered on the lower cover and forms an accommodating space together with the lower cover; the upper cover comprises an upper cover body covering the lower cover and an annular supporting wall which is convexly extended towards the lower cover direction from the upper cover body, the sounding single body is supported and fixed on the supporting wall and divides the accommodating space into a front cavity and a rear cavity, the breathable isolation assembly is positioned in the rear cavity and divides the rear cavity into a first rear cavity and a second rear cavity which are mutually communicated with air, the breathable isolation assembly is characterized by comprising a support and a breathable isolation piece, the support is covered with the sounding single body and fixed on the supporting wall, the support is provided with a leakage hole penetrating through the breathable isolation assembly, and the breathable isolation piece is attached to and fixed on the support and completely covers the leakage hole; the sound-absorbing particles are filled in the second rear cavity, and the sound-absorbing particles are packaged in the second rear cavity by the breathable isolation component.

2. The loudspeaker box of claim 1, wherein a glue containing groove for containing glue is formed between the supporting wall and the sound generating unit, and the bracket and the sound generating unit are supported and fixed on the supporting wall through the glue.

3. The speaker box according to claim 1, wherein the support walls include a first support wall protruding from the upper cover body toward the lower cover and a second support wall extending from an outer peripheral edge of the first support wall toward the lower cover, the sound generating unit support is fixed to an end of the first support wall close to the lower cover, and the sound generating unit is spaced from the second support wall.

4. The loudspeaker box of claim 3, wherein the bracket comprises a bracket body opposite to the sound generating unit and a first annular extension part bent and extended from the periphery of the bracket body to the direction close to the upper cover; the first extension part is positioned between the sound generating single body and the second support wall; the leakage hole penetrates through the bracket body and the first extending part at the same time.

5. The speaker box of claim 4, wherein the air-permeable partition includes an air-permeable partition body attached to the bracket body and a second extending portion extending from the air-permeable partition body in a bending manner toward the upper cover, and the second extending portion is fixed to the first extending portion.

6. The speaker cabinet as claimed in claim 4, wherein the leakage holes include two, and the two leakage holes are opened at opposite sides of the bracket, respectively.

7. A loudspeaker enclosure according to claim 1, wherein the support is of sheet steel.

8. The speaker box of claim 4, further comprising conductive terminals electrically connected to the sound-emitting cells; the bracket also comprises a yielding groove penetrating through the first extension part; the conductive terminal extends from the first rear cavity to the second rear cavity through the abdicating groove.