WO2021082079A1

WO2021082079A1 - Loudspeaker enclosure

Info

Publication number: WO2021082079A1
Application number: PCT/CN2019/118032
Authority: WO
Inventors: 李红; 王程良
Original assignee: 瑞声声学科技(深圳)有限公司; 瑞声科技(新加坡)有限公司
Priority date: 2019-11-01
Filing date: 2019-11-13
Publication date: 2021-05-06
Also published as: CN210781299U

Abstract

Provided is a loudspeaker enclosure, comprising a shell with an accommodating space and a sound production unit accommodated in the accommodating space and dividing the accommodating space into a front cavity and a rear cavity, wherein the accommodating space comprises a main body portion for accommodating the sound production unit and an extending portion extending from the main body portion, the shell comprises a first bottom plate located on the main body portion, a second bottom plate located on the extending portion, a first surrounding wall extending from the first bottom plate and a second surrounding wall reversely extending from the second bottom plate, the side, away from the first bottom plate, of the first surrounding wall being covered with a first breathable separator, the side, close to the second bottom plate, of the second surrounding wall being covered with a second breathable separator, a first sound absorption cavity in communication with the rear cavity being formed by the enclosing of the first breathable separator, the first surrounding wall and the first bottom plate, and a second sound absorption cavity in communication with the rear cavity is formed by enclosing of the second breathable separator and the second surrounding wall. The loudspeaker enclosure of the prevent utility model can maximize the volume of the sound absorption cavities, and improve the bass performance of the loudspeaker enclosure.

Description

Speaker box

Technical field

The utility model relates to the field of loudspeakers, in particular to a loudspeaker box.

Background technique

As shown in Figures 6 and 7, in the existing speaker 200, since the side wall 21 is higher than the side wall 22, an air-permeable spacer 23 is provided to cover the sound-absorbing cavity 201, resulting in that the rear cavity of the speaker 200 cannot be used as a bass sound. Cavity, can not improve the bass performance of the speaker well.

Therefore, it is necessary to provide a loudspeaker that can increase the volume of the bass cavity through the improvement of the air-permeable spacer to enhance the bass performance.

Summary of the invention

technical problem

The purpose of the utility model is to provide a loudspeaker box which increases the volume of the bass cavity through the improvement of the air-permeable isolator to improve the bass performance.

The solution to the problem

Technical solutions

The technical scheme of the utility model is as follows:

A loudspeaker box includes a housing with a containing space, a sounding unit that is stored in the containing space and partitions the containing space into a front cavity and a rear cavity. The containing space includes a main body that contains the sounding unit and a self An extension portion extending from the main body portion, and the housing includes a first bottom plate located on the main portion, a second bottom plate located on the extension portion, a first surrounding wall extending from the first bottom plate, and a first surrounding wall from the first bottom plate. A second surrounding wall extending in the opposite direction from the two bottom plates, a side of the first surrounding wall facing away from the first bottom plate is covered with a first air-permeable spacer, and a side of the second surrounding wall close to the second bottom plate is covered There is a second air-permeable spacer, the first air-permeable spacer, the first surrounding wall and the first bottom plate enclose to form a first sound-absorbing cavity communicating with the rear cavity, the second air-permeable spacer, The second surrounding wall encloses to form a second sound-absorbing cavity communicating with the rear cavity.

Further, the housing is provided with a conduction channel connecting the first sound absorbing cavity and the second sound absorbing cavity.

Further, the first bottom plate and the second bottom plate are connected, and the first bottom plate and the second bottom plate are located on the same plane.

Further, the first surrounding wall includes a first part extending in one direction and a second part communicating with the first part and arranged at an angle between the extending direction and the extending direction of the first part.

Further, the housing includes a bottom wall, a side wall extending from an edge of the bottom wall, a top of the storage space that covers the side wall and encloses the bottom wall and the side wall. The sounding monomer and the bottom wall are enclosed to form the front cavity, and the sounding monomer, the bottom wall, the side walls and the top wall are enclosed to form the rear cavity, the The distance between the area on the top wall opposite to the first bottom plate and the bottom wall is greater than the distance between the area on the top wall opposite to the second bottom plate and the bottom wall, the first Both the bottom plate and the second bottom plate extend from the inner wall surface of the side wall, the first surrounding wall extends from the first bottom plate in a direction away from the bottom wall, and the second surrounding wall extends from the first bottom wall. The two bottom plates extend in a direction close to the bottom wall.

Further, the first air-permeable spacer and the second air-permeable spacer are respectively fixed to the first and second surrounding walls by hot melt.

The beneficial effects of the invention

Beneficial effect

The beneficial effect of the utility model is that by protruding the first surrounding wall on the first bottom plate, and covering the first air-permeable spacer on the side of the first surrounding wall away from the first bottom plate, the space of the second sound-absorbing cavity is increased. The setting method makes full use of the space of the rear cavity, thereby effectively expanding the volume of the sound-absorbing cavity and improving the bass performance of the speaker box.

Brief description of the drawings

Description of the drawings

Figure 1 is a schematic structural diagram of a speaker box provided by an embodiment of the utility model;

Figure 2 is an exploded view of the speaker box in Figure 1;

Figure 3 is a schematic diagram of the structure of the bottom shell and upper parts of the speaker box provided by the embodiment of the utility model;

Figure 4 is a cross-sectional view along A-A in Figure 1;

Fig. 5 is a partial enlarged view at B in Fig. 3;

Fig. 6 is a schematic diagram of the structure of the bottom shell and upper parts of the speaker box in the prior art;

Fig. 7 is a partial exploded schematic view of the bottom shell and upper parts of the speaker box in the prior art.

In the picture:

100. Speaker box; 1. Shell; 111, main body; 112, extension; 10, storage space; 2. sounding monomer; 101, front cavity; 102, rear cavity; 311, first bottom plate; 321, second Bottom plate; 310, the first notch; 312, the first surrounding wall; 322, the second surrounding wall; 313, the first air-permeable spacer; 323, the second air-permeable spacer; 301, the first sound-absorbing cavity; 302, the second Sound-absorbing cavity; 303, conduction channel; 3101, first part; 3102, second part; 11, bottom wall; 12, side wall; 13, top wall.

Invention embodiment

Detailed ways

In the following, the utility model will be further described in conjunction with the drawings and embodiments.

1 to 5, a speaker box 100 is provided, including a housing 1 having a receiving space 10 and a sounding unit received in the receiving space 10 and dividing the receiving space 10 into a front chamber 101 and a rear chamber 102 The body 2, the accommodating space 10 includes a main body 111 for accommodating the sounding monomer 2 and an extension 112 extending from the main body 111, and the housing 1 includes a first bottom plate 311 at the main body 111 and a second bottom plate at the extension 112 321. A first surrounding wall 312 extending from the first bottom plate 311 and a second surrounding wall 322 extending in the opposite direction from the second bottom plate 321, the side of the first surrounding wall 312 facing away from the first bottom plate 311 is covered with a first A breathable spacer 313, a side of the second surrounding wall 322 close to the second bottom plate 321 is covered with a second breathable spacer 323, the first breathable spacer 313, the first surrounding wall 312 and the The first bottom plate 311 is enclosed to form a first sound-absorbing cavity 301 communicating with the rear cavity 102, and the second air-permeable spacer 323 and the second surrounding wall 322 are enclosed to form a second sound-absorbing cavity 302 communicating with the rear cavity 102 .

The first bottom plate 311 and the second bottom plate 321 are both arranged in the rear cavity 102, the first sound absorbing cavity 301 and the second sound absorbing cavity 302 are both formed in the rear cavity 102, and the first sound absorbing cavity 301 and the second sound absorbing cavity 302 are both filled with Sound-absorbing particles to enhance the bass effect. The arrangement of the first surrounding wall 312 increases the volume of the first sound-absorbing cavity 301. The first surrounding wall 312 can be adapted to the larger area of the housing 1 to make full use of the space of the rear cavity 102 To enhance the bass effect.

It is understandable that the first bottom plate 311 and the second bottom plate 321 can be set at the same height or different heights.

Preferably, the housing 1 is provided with a conduction channel 303 that communicates the first sound-absorbing cavity 301 and the second sound-absorbing cavity 302; in this way, the volume of the sound-absorbing cavity is further increased and the bass effect is enhanced.

Preferably, the first bottom plate 311 and the second bottom plate 321 are connected and the first bottom plate 311 and the second bottom plate 321 are located on the same plane.

The first bottom plate 311 and the second bottom plate 321 are formed on the same plate body, which is convenient for integral molding, and the structure of the two is stable and the consistency is good.

Preferably, the first notch 310 includes a first portion 3101 extending in one direction and a second portion 3102 communicating with the first portion 3101 and extending at an angle with the extending direction of the first portion 3101.

The first part 3101 and the second part 3102 are adapted to the structure of the vocal unit 2, the first part 3101 and the second part 3102 are arranged around the vocal unit 2, the first part 3101 extends along the length of the vocal unit 2, and the second part 3102 extends along the sound The width direction of the monomer 2 extends to further increase the volume of the first sound-absorbing cavity 301, thereby enhancing the bass effect.

Preferably, the housing 1 includes a bottom wall 11, a side wall 12 extending from the edge of the bottom wall 11, and covers the side wall 12 and encloses the bottom wall 11 and the side wall 12 to form the housing The top wall 13 of the space 10, the sounding monomer 2 and the bottom wall 11 enclose the front cavity 101, the sounding monomer 2, the bottom wall 11, the side wall 12 and the The top wall 13 encloses the rear cavity 102, and the distance between the area on the top wall 13 opposite to the first bottom plate 311 and the bottom wall 11 is greater than the distance between the top wall 13 and the first bottom wall 11 The distance between the opposing area of the two bottom plates 321 and the bottom wall 11, the first bottom plate 311 and the second bottom plate 321 both extend from the inner wall surface of the side wall 12, and the first surrounding wall 312 extends from The first bottom plate 311 extends in a direction away from the bottom wall 11, and the second surrounding wall 322 extends from the second bottom plate 321 in a direction close to the bottom wall 11.

The first bottom plate 311 and the second bottom plate 321 extend from the inner wall surface of the side wall 12 to be close to the sound emitting unit 2. The first bottom plate 311 corresponds to the area where the distance between the top wall 13 and the bottom wall 11 is greater, and the second bottom plate 321 corresponds to The top wall 13 and the bottom wall 11 are arranged in an area with a smaller distance, and the first surrounding wall 312 is arranged in an area with a larger space between the top wall 13 and the bottom wall 11, making full use of the space and further improving the first sound-absorbing cavity 301 Volume, thereby enhancing the bass effect.

Preferably, the first air-permeable spacer 313 and the second air-permeable spacer 323 are respectively fixed to the first wall 312 and the second wall 322 by hot melt. Of course, it can be understood that the first air-permeable spacer 313 and the first surrounding wall 312 and the second air-permeable spacer 323 and the second wall 322 can also be fixed by pasting or injection molding.

Preferably, the first air-permeable spacer 313 and the second air-permeable spacer 323 are both made of non-woven fabric.

The above are only the embodiments of the present utility model. It should be pointed out here that for those of ordinary skill in the art, improvements can be made without departing from the inventive concept of the present utility model, but these all belong to The scope of protection of the utility model.

Claims

A loudspeaker box includes a housing with a containing space, a sounding unit that is stored in the containing space and partitions the containing space into a front cavity and a rear cavity. The containing space includes a main body that contains the sounding unit and a self The extension portion of the main body portion is characterized in that the housing includes a first bottom plate located in the main portion, a second bottom plate located in the extension portion, a first surrounding wall extending from the first bottom plate, and A second surrounding wall extending in the opposite direction from the second bottom plate, a side of the first surrounding wall facing away from the first bottom plate is covered with a first air-permeable spacer, and the second surrounding wall is close to the second bottom plate One side is covered with a second air-permeable spacer, the first air-permeable spacer, the first surrounding wall and the first bottom plate enclose to form a first sound-absorbing cavity communicating with the rear cavity, and the second The air-permeable spacer and the second surrounding wall enclose to form a second sound-absorbing cavity communicating with the rear cavity.
The speaker box according to claim 1, wherein the housing is provided with a conduction channel connecting the first sound absorbing cavity and the second sound absorbing cavity.
The speaker box according to claim 1, wherein the first bottom plate and the second bottom plate are connected, and the first bottom plate and the second bottom plate are located on the same plane.
The speaker box according to claim 1, wherein the first surrounding wall includes a first part extending in one direction and communicating with the first part and arranged at an angle between the extending direction and the extending direction of the first part The second part.
The speaker box according to claim 1, characterized in that: the housing includes a bottom wall, a side wall extending from the edge of the bottom wall, a cover on the side wall and a contact with the bottom wall and the bottom wall. The side walls are enclosed to form the top wall of the accommodating space, the sounding monomer and the bottom wall are enclosed to form the front cavity, the sounding monomer, the bottom wall, the side walls and the top The wall is enclosed to form the rear cavity, and the distance between the area on the top wall opposite to the first bottom plate and the bottom wall is greater than the distance between the area on the top wall opposite to the second bottom plate and the The distance between the bottom walls, the first bottom plate and the second bottom plate both extend from the inner wall surface of the side wall, and the first surrounding wall extends from the first bottom plate in a direction away from the bottom wall , The second surrounding wall extends from the second bottom plate in a direction close to the bottom wall.
The loudspeaker box according to claim 1, wherein the first air-permeable spacer and the second air-permeable spacer are respectively fixed to the first wall and the second wall by hot melt.