CN210986334U

CN210986334U - Loudspeaker box

Info

Publication number: CN210986334U
Application number: CN201922132574.5U
Authority: CN
Inventors: 施胜荣; 曾月; 吕雪冬
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2019-12-02
Filing date: 2019-12-02
Publication date: 2020-07-10
Anticipated expiration: 2029-12-02
Also published as: WO2021109185A1

Abstract

The utility model provides a loudspeaker box, its including have accommodating space the shell, accept in sound production monomer and ventilative separator in the accommodating space of shell, the protruding barricade that is equipped with of shell, ventilative separator with the barricade joint, sound production monomer will accommodating space separates into antechamber and back chamber, sound production monomer install in the barricade, wherein, loudspeaker box is still including locating ventilative piece in the back chamber, locate the shell and to the fixed part that accommodating space extends and by the fixed part with the shell encloses the recess of establishing jointly, ventilative piece laminating is fixed in the fixed part covers the recess. The loudspeaker box is through setting up the recess in the shell inner wall, set up in the back chamber with the communicating ventilative piece of this recess, increased the effective ventilative area in the back chamber of loudspeaker box, improved the utilization ratio in back chamber, effectively promoted the low frequency sensitivity of loudspeaker box to the resonant frequency of loudspeaker box has been reduced.

Description

Loudspeaker box

[ technical field ] A method for producing a semiconductor device

The utility model relates to an electronic product 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.

In the related art, the speaker box comprises a lower cover, an upper cover assembled with the lower cover to form an accommodating space, and a sounding unit accommodated in the accommodating space, wherein the sounding unit and the upper cover enclose a front cavity, and the sounding unit, the lower cover and the upper cover enclose a rear cavity together. In order to increase the low frequency acoustic performance of speaker box sets up the barricade that is higher than the sound production monomer in the upper cover to laminate ventilative separator on the barricade, with sound production monomer and back chamber isolated, then the filling in the back intracavity is inhaled the sound granule and is in order to improve the low frequency performance of speaker box. However, the regional sound production monomer of keeping away from of partial back cavity is revealed, and the air current is unobstructed, leads to the regional invalid of this partial back cavity, and the back cavity is equivalent to being blocked up, can not effectively promote speaker performance.

Therefore, a new speaker box must be provided to solve the above technical problems.

[ Utility model ] content

An object of the utility model is to provide a can increase rear chamber air permeable area's speaker box.

In order to achieve the above object, the utility model provides a loudspeaker box, its including have accommodating space the shell, accept in sound production monomer and ventilative separator in the accommodating space of shell, the protruding barricade that is equipped with of shell, ventilative separator with the barricade joint, sound production monomer will accommodating space separates into antechamber and back chamber, sound production monomer install in the barricade, wherein, loudspeaker box is still including locating ventilative piece in the back chamber, locating the shell and to the fixed part that accommodating space extends and by the fixed part with the shell encloses the recess of establishing jointly, ventilative piece laminating is fixed in the fixed part covers the recess.

Preferably, the rear cavity comprises a first area right opposite to the sound generating single body and a second area communicated with the first area and located on one side of the sound generating single body, and the air permeable piece is located in the second area.

Preferably, the housing includes an upper cover and a lower cover assembled with the upper cover, and the retaining wall extends from the upper cover to the accommodating space and is spaced from the lower cover by a certain distance; the fixing part extends from the lower cover to the accommodating space and is separated from the upper cover by a certain distance.

Preferably, the distance from the retaining wall to the lower cover is greater than the height of the fixing part.

Preferably, the air permeable member is attached to the lower cover by means of heat fusion.

Preferably, the air permeable member is any one of a non-woven fabric or dust-free mesh fabric, a nylon woven mesh or a metal mesh.

Preferably, the air-permeable member and the air-permeable partition are offset from each other.

Preferably, the direction from the retaining wall to the lower cover is set as a first direction, and the air-permeable piece and the air-permeable isolating piece do not overlap with each other along the orthographic projection of the first direction on the lower cover.

Compared with the prior art, the utility model provides a loudspeaker box is through setting up the recess at the shell inner wall, set up in the back chamber with the communicating ventilative piece of this recess, increased the effective ventilative area in the back chamber of loudspeaker box, improved the utilization ratio in back chamber. Effectively improving the low-frequency sensitivity of the loudspeaker box and reducing the resonance frequency of the loudspeaker 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 an exploded perspective view of the speaker box of the present invention when it is not filled with sound-absorbing particles;

FIG. 2 is a perspective view of a lower cover of the speaker cabinet shown in FIG. 1;

FIG. 3 is a perspective view of the speaker cabinet of FIG. 1 with the lower cover and the air permeable member assembled;

FIG. 4 is a perspective view of the loudspeaker enclosure of FIG. 1 assembled and filled with sound absorbing particles;

FIG. 5 is a cross-sectional view taken along line A-A of FIG. 3;

fig. 6 is an enlarged view of a portion B shown in fig. 4.

[ 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 to 6, the speaker box 100 according to the present invention includes a housing 10 having an accommodating space 160, a sound generating unit 130 accommodated in the accommodating space 160 of the housing 10, a ventilation spacer 140, and sound absorbing particles 170. The inner wall of the housing 10 is convexly provided with a retaining wall 113, and the sound-generating unit 130 is installed in the retaining wall 113. The air-permeable partition 140 is engaged with the retaining wall 113, and the sound generating unit 130 divides the accommodating space 160 into a front cavity 161 and a rear cavity 162. The sound absorption particles are contained in the rear cavity 162, and the air-permeable partition 140 is engaged with the retaining wall 113 to isolate the sound generating unit 130 and the sound absorption particles 170. The speaker box 100 also includes an air permeable member 150 disposed within the rear cavity 162.

Specifically, the housing 10 includes an upper cover 110 and a lower cover 120, and the upper cover 110 and the lower cover 120 are assembled to form the receiving space 160 therein. The upper cover 110 includes a top wall 111 having a substantially flat plate shape and a side wall 112 formed by bending and extending along an edge of the top wall 111, the side wall 112 is disposed around the top wall 111, and a stepped portion 1121 is disposed at an end of the side wall 112 away from the top wall 111. The retaining wall 113 extends from the top wall 111 of the upper cover 110 to the accommodating space 160 and is spaced apart from the lower cover 120. The retaining wall 113 and the top wall 111 enclose to form a mounting groove 114, and the sound generating unit 130 is mounted in the mounting groove 114. Wherein, the height of retaining wall 113 is not less than the height of sound generating unit 130 after installing in mounting groove 114, ventilative separator 140 with retaining wall 113 keeps away from the one end joint of roof 111 to hide the isolation sound generating unit 130.

The lower cover 120 includes a bottom wall 121 having a substantially flat plate shape, a side wall 122 formed by bending and extending along an edge of the bottom wall 121, a fixing portion 124 extending from the bottom wall 121 to the accommodating space 160, and a groove 123 enclosed by the fixing portion 124 and the bottom wall 121. The fixing portion 124 is spaced apart from the upper cover 110 to form a larger rear chamber 162 to be filled with more sound absorbing particles 170. The side wall 122 is disposed around the bottom wall 121. The side wall 122 abuts against and is fastened to the step portion 1121 of the upper cover 110, so that the upper cover 110 and the lower cover 120 are fixed together. The air permeable member 150 is attached to the fixing portion 124 and covers the groove 123. The air permeable member 150 communicates with the groove 123 of the lower cover 120 to increase the air permeable area of the rear chamber 162, thereby improving the performance of the speaker box 100. Optionally, the air permeable member 150 is any one of a non-woven fabric, a dust-free mesh fabric, a nylon woven mesh, or a metal mesh, and is attached to the fixing portion 124 by thermal fusion.

Further, the air-permeable partition 140 is joined to the retaining wall 113 to divide the accommodating space 160 into the front cavity 161 and the rear cavity 162. The rear chamber 162 includes a first area 1621 and a second area 1622 in communication with each other. The first area 1621 is opposite to the sound generating unit 130, and the second area 1622 is located on one side of the sound generating unit 130. The gas permeable member 150 is located within the second region 1622. In particular, the breathable barrier 140 is spaced from the bottom wall 121 to form the first region 1621; the side wall 112, the side wall 122 and the retaining wall 113 are formed in the second region 1622 at intervals. Since the insulating air permeable member 140 and the air permeable member 150 are respectively provided in the first region 1621 and the second region 1622 of the rear chamber 162, the air permeable area of the entire rear chamber 162 is increased. After the sound absorption particles 170 are filled in the rear cavity 162, the air permeability of the second area 1622 far away from the sound generating unit 130 is increased by using the air permeable member 150 to communicate with the groove 123, so that the air flows of the first area 1621 and the second area 1622 of the rear cavity 162 are smooth, and the second area 1622 is prevented from being blocked. The air permeable member 150 and the air permeable partition 140 are staggered from each other, specifically, the direction from the retaining wall 113 to the lower cover 120 is set as a first direction 200, and the orthographic projections of the air permeable member 150 and the air permeable partition 140 on the lower cover 120 along the first direction 200 do not overlap with each other. The distance H1 from the retaining wall 113 to the bottom wall 121 of the bottom cover 120 is greater than the height H2 of the fixing portion 124, so as to facilitate smooth airflow between the first area 1621 and the second area 1622.

Compared with the prior art, the utility model provides a speaker box is through setting up ventilative spare in the rear chamber, ventilative spare laminating is fixed in the fixed part of lower cover covers the recess has increased the effective ventilative area who fills sound absorption granule rear chamber of speaker box, has improved the utilization ratio in rear chamber, has effectively promoted the low frequency sensitivity of speaker box to the resonant frequency of speaker box has been reduced.

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 including have accommodating space the shell, accept in sound production monomer and ventilative separator in the accommodating space of shell, the protruding barricade that is equipped with of shell, ventilative separator with the barricade joint, sound production monomer will accommodating space separates into antechamber and back chamber, sound production monomer install in the barricade, a serial communication port, loudspeaker box is still including locating ventilative piece in the back chamber, locate the shell and to the fixed part that accommodating space extends and by the fixed part with the shell encloses the recess of establishing jointly, ventilative piece laminating is fixed in the fixed part covers the recess.

2. A loudspeaker enclosure according to claim 1, wherein the rear chamber includes a first region facing the sound generating unit and a second region communicating with the first region and located on one side of the sound generating unit, the air permeable member being located in the second region.

3. The speaker cabinet as claimed in claim 1, wherein the housing includes an upper cover and a lower cover assembled with the upper cover, and the retaining wall extends from the upper cover to the receiving space and is spaced apart from the lower cover; the fixing part extends from the lower cover to the accommodating space and is separated from the upper cover by a certain distance.

4. A loudspeaker enclosure according to claim 3, wherein the distance from the dam to the lower cover is greater than the height of the fixing portion.

5. A loudspeaker enclosure according to claim 4, wherein the air permeable member is attached to the lower cover by heat fusion.

6. A loudspeaker enclosure according to claim 1, wherein the air permeable member is any one of a non-woven fabric or dust-free mesh fabric, a nylon woven mesh or a metal mesh.

7. A loudspeaker enclosure according to claim 4, wherein the air-permeable member and the air-permeable partition are offset from one another.

8. The speaker cabinet as claimed in claim 7, wherein the direction from the retaining wall to the lower cover is set to a first direction, and the air-permeable member and the air-permeable partition do not overlap each other in an orthographic projection on the lower cover in the first direction.