CN209897214U

CN209897214U - Loudspeaker box

Info

Publication number: CN209897214U
Application number: CN201920556476.1U
Authority: CN
Inventors: 张绍元; 冯炉; 时阳
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2019-04-19
Filing date: 2019-04-19
Publication date: 2020-01-03
Anticipated expiration: 2029-04-19

Abstract

The utility model relates to a loudspeaker box, include: a bottom case; the top shell is covered on the bottom shell and forms an accommodating space with the bottom shell in an enclosing manner; the sound production single body is accommodated in the accommodating space and divides the accommodating space into a front cavity and a rear cavity, the sound production single body and the bottom shell are enclosed to form the front cavity, and the sound production single body, the top shell and the bottom shell are enclosed together to form the rear cavity; and the flexible sound absorbing layer is positioned in the rear cavity and elastically abutted between the sound generating monomer and the top shell. Above-mentioned loudspeaker box, through set up flexible sound absorbing layer in the back intracavity, and flexible sound absorbing layer elasticity butt is between sound production monomer and top shell, and certain cushioning effect can be played to the top shell on flexible sound absorbing layer to can destroy the rigid resonance condition of back chamber, strengthen loudspeaker box's use reliability greatly, the setting up of the relative back chamber in flexible sound absorbing layer makes whole back chamber all can be used to form virtual sound chamber simultaneously, has effectively improved loudspeaker box's low frequency acoustic performance.

Description

Loudspeaker box

[ technical field ] A method for producing a semiconductor device

The utility model relates to an acoustoelectric field especially relates to a loudspeaker box.

[ background of the invention ]

The sounding monomer, the top shell and the bottom shell of the traditional loudspeaker box jointly enclose the rear cavity formed by closing and still have a large space which is not utilized, when the sounding monomer works, rigid resonance occurs in the rear cavity, so that the use reliability of the loudspeaker box is influenced, and the large space of the rear cavity is not utilized, so that the volume of the virtual sound cavity of the loudspeaker box is not maximized, and the low-frequency acoustic performance of the loudspeaker box is greatly limited.

[ Utility model ] content

Accordingly, it is desirable to provide a speaker box that can avoid rigid resonance in the rear cavity and has excellent low-frequency acoustic performance.

A loudspeaker enclosure comprising:

a bottom case;

the top shell is covered on the bottom shell and forms an accommodating space with the bottom shell in an enclosing manner;

the sound generating unit is accommodated in the accommodating space and divides the accommodating space into a front cavity and a rear cavity, the sound generating unit and the bottom shell are enclosed to form the front cavity, and the sound generating unit, the top shell and the bottom shell are enclosed together to form the rear cavity; and

and the flexible sound absorption layer is positioned in the rear cavity and elastically abutted between the sound production monomer and the top shell.

In one embodiment, a sound guide channel is formed on the bottom shell, and the sound guide channel connects the front cavity with the outside and is used for forming a side sound production structure.

In one embodiment, the sound-producing device further comprises a breathable isolating piece, and the breathable isolating piece is arranged between the flexible sound-absorbing layer and the sound-producing monomer.

In one embodiment, the air-permeable partition is adhesively fixed to the sound-generating unit by an adhesive layer.

In one embodiment, the sound-absorbing structure further comprises a first reinforcing layer embedded in the top shell, and the flexible sound-absorbing layer is elastically abutted between the sound-emitting single body and the first reinforcing layer.

In one embodiment, the portable electronic device further comprises a second reinforcing layer embedded in the bottom case.

In one embodiment, the bottom shell is provided with an accommodating opening communicated with the front cavity, and the second reinforcing layer is fixed on the bottom shell and covers the accommodating opening.

In one embodiment, the second reinforcing layer is injection molded integrally with the bottom case.

In one embodiment, the sound generating device further comprises a circuit board, wherein the circuit board extends into the accommodating space and is electrically connected with the sound generating unit.

In one embodiment, the flexible sound absorbing layer is made of sound absorbing cotton.

Above-mentioned loudspeaker box, through set up flexible sound absorbing layer in the back intracavity, and flexible sound absorbing layer elasticity butt is between sound production monomer and top shell, flexible sound absorbing layer can play certain cushioning effect to the top shell, thereby can destroy the rigid resonance condition of back chamber, loudspeaker box's use reliability has been strengthened greatly, the setting up of the relative back chamber in flexible sound absorbing layer makes whole back chamber all can be used to form virtual sound chamber simultaneously, thereby make loudspeaker box's virtual sound chamber volume reach the maximize, loudspeaker box's low frequency acoustic performance has effectively been improved.

[ description of the drawings ]

Fig. 1 is a schematic cross-sectional view of a speaker box according to an embodiment of the present invention;

FIG. 2 is an exploded view of the loudspeaker enclosure of FIG. 1;

fig. 3 is an enlarged schematic view at a in fig. 1.

[ detailed description ] embodiments

The present invention will be further described with reference to the accompanying drawings and embodiments.

As shown in fig. 1, the speaker box 10 in an embodiment of the present invention includes a bottom shell 100, a top shell 200, a sound generating unit 300, and a flexible sound absorbing layer 400. The top case 200 is covered on the bottom case 100 and forms an accommodating space 102 with the bottom case 100. The sound generating unit 300 is accommodated in the accommodating space 102, and divides the accommodating space 102 into a front cavity 106 and a rear cavity 104, the sound generating unit 300 and the bottom shell 100 enclose to form the front cavity 106, the sound generating unit 300, the top shell 200 and the bottom shell 100 jointly enclose to form the rear cavity 104, the front cavity 106 is used for generating sound, and the rear cavity 104 is used for improving low-frequency acoustic performance. The flexible sound-absorbing layer 400 is located in the rear chamber 104 and elastically abuts between the sound-emitting unit 300 and the top case 200.

Above-mentioned loudspeaker box 10, through set up flexible sound absorbing layer 400 in rear chamber 104, and flexible sound absorbing layer 400 elasticity butt is between sound production monomer 300 and top shell 200, flexible sound absorbing layer 400 can play certain cushioning effect to top shell 200, thereby can destroy the rigid resonance condition of rear chamber 104, loudspeaker box 10's use reliability has been strengthened greatly, the relative rear chamber 104's of flexible sound absorbing layer 400 setting makes whole rear chamber 104 all can be used to form virtual sound chamber simultaneously, thereby make loudspeaker box 10's virtual sound chamber volume reach the maximize, loudspeaker box 10's low frequency acoustic performance has effectively been improved.

It should be noted that in the present embodiment, the flexible sound absorbing layer 400 is made of sound absorbing cotton, but in other embodiments, the material of the flexible sound absorbing layer 400 is not limited thereto, and the material may also be other flexible sound absorbing materials.

As shown in fig. 2 and 3, in an embodiment, the speaker box 10 further includes an air-permeable spacer 500, and the air-permeable spacer 500 is disposed between the flexible sound-absorbing layer 400 and the sound-generating unit 300. The ventilation spacer 500 is used for ventilation and blocking, so that the gas circulation can be realized to block dust, and the pollution of the dust falling from the flexible sound absorption layer 400 to the sound production unit 300 is avoided. In the present embodiment, the air-permeable partition 500 may be, but is not limited to, a dust screen. In one embodiment, the air-permeable spacer 500 is adhesively fixed to the sound generating unit 300 by the adhesive layer 600. In this embodiment, the adhesive layer 600 may be a double-sided tape or a glue tape.

As shown in fig. 1, in an embodiment, a sound guide channel 110 is further formed on the bottom case 100, and the sound guide channel 110 connects the front cavity 106 with the outside for forming a side sound emitting structure.

As shown in fig. 1 and fig. 2, in an embodiment, the speaker box 10 further includes an air-permeable barrier 700, and the air-permeable barrier 700 is disposed at an opening of the sound guide channel 110. The air-permeable barrier member 700 is used for ventilation and air-blocking, so as to prevent external dust from entering the front cavity 106 through the sound-guiding channel 110 and polluting the sound-generating unit 300. In this embodiment, the air permeable barrier 700 may be, but is not limited to, a dust screen.

As shown in fig. 2 and 3, in an embodiment, the speaker box 10 further includes a first reinforcing layer 800, and the first reinforcing layer 800 is embedded in the top case 200 to improve the overall strength of the top case 200. In this embodiment, the first reinforcing layer 800 may be a metal sheet, and the flexible sound absorbing layer 400 is elastically abutted between the sound generating unit 300 and the first reinforcing layer 800.

As shown in fig. 1 and 2, the speaker box 10 further includes a second reinforcing layer 900, and the second reinforcing layer 900 is embedded in the bottom case 100 to improve the overall strength of the bottom case 100. In this embodiment, the second reinforcement layer 900 may be a metal sheet. Further, in the present embodiment, the bottom case 100 is provided with an accommodating opening 120 communicating with the front cavity 106, and the second reinforcing layer 900 is fixed to the bottom case 100 and covers the accommodating opening 120. The setting of holding opening 120 makes second enhancement layer 900 fixed back, under the unchangeable circumstances of the intensity of protection bottom shell 100 for bottom shell 100 is level and smooth structure, facilitates the application installation. Further, in the present embodiment, the receiving opening 120 is disposed opposite to the sound generating unit 300, and the second reinforcing layer 900 is integrally injection-molded with the bottom case 100.

As shown in fig. 1 and fig. 2, in an embodiment, the speaker box 10 further includes a circuit board 920, and the circuit board 920 extends into the accommodating space 102 and is electrically connected to the sound generating unit 300.

The above are only embodiments of the present invention, 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 loudspeaker enclosure, comprising:

a bottom case;

2. A loudspeaker enclosure according to claim 1, wherein the bottom enclosure is formed with a sound guide channel that communicates the front chamber with the outside for forming a side sound emitting structure.

3. The loudspeaker enclosure of claim 1, further comprising a breathable spacer disposed between the flexible sound absorbing layer and the sound generating unit.

4. A loudspeaker enclosure according to claim 3, wherein the air-permeable partition is adhesively secured to the sound-generating cell by an adhesive layer.

5. The speaker box of claim 1, further comprising a first reinforcing layer embedded in the top case, wherein the flexible sound absorbing layer is elastically abutted between the sound generating unit and the first reinforcing layer.

6. The speaker cabinet of claim 1, further comprising a second stiffening layer embedded within the bottom shell.

7. The speaker cabinet as claimed in claim 6, wherein the bottom casing is provided with an accommodating opening communicating with the front cavity, and the second reinforcing layer is fixed to the bottom casing and covers the accommodating opening.

8. A loudspeaker enclosure according to claim 7, wherein the second reinforcing layer is injection moulded integrally with the bottom shell.

9. The speaker box of claim 1, further comprising a circuit board extending into the receiving space and electrically connected to the sound generating unit.

10. A loudspeaker enclosure according to claim 1, wherein the flexible sound absorbing layer is made of sound absorbing cotton.