WO2021134468A1

WO2021134468A1 - Loudspeaker housing

Info

Publication number: WO2021134468A1
Application number: PCT/CN2019/130483
Authority: WO
Inventors: 印兆宇; 陈志臣; 柳林
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: 2019-12-31
Filing date: 2019-12-31
Publication date: 2021-07-08

Abstract

The present utility model provides a loudspeaker housing, which comprises an upper cover, a lower cover forming an accommodating space with the upper cover, and a loudspeaker unit. The lower cover is provided with an annular blocking wall; the loudspeaker housing further comprises a breathable separator; the upper cover is provided with an upper cover bottom wall and a baffle plate in an area where the loudspeaker unit is not placed; a lower cover bottom wall, the annular blocking wall and the breathable separator define a first filling cavity for accommodating an acoustic material; the loudspeaker housing further comprises a second filling cavity formed on the side of the baffle plate distant from the loudspeaker unit; the annular blocking wall is provided with a notch in the direction facing the second filling cavity, the second filling cavity being communicated with the first filling cavity by means of the notch. According to the present utility model, the second filling cavity and the first filling cavity are connected into a whole by means of the notch on the annular blocking wall, so that only one-time powder filling is needed, the assembly efficiency is improved, and the costs are also reduced.

Description

A speaker box

Technical field

The utility model belongs to the technical field of electroacoustics, and particularly relates to a speaker box.

Background technique

With the rapid development of science and technology, audio equipment continues to develop rapidly, and people have higher and higher requirements for the functionality of audio equipment. For speaker boxes, more and more people have put forward higher requirements for their audio performance. In the related technology, if you want to fill the sound-absorbing material, it is usually filled with a sound-absorbing material on the back of the speaker unit separated by a hot melt or a horizontal plate, and then separated by a hot melt or an insert plate on the side of the speaker unit. For regional filling of sound-absorbing materials, the two filling areas are not connected, and two powder filling holes need to be opened for powder filling, or even in extreme cases, two powder fillings are required.

technical problem

The purpose of the utility model is to provide a loudspeaker box, which aims to improve the efficiency of filling sound-absorbing materials and assembly, and reduce the cost.

Technical solutions

The technical solution of the present invention is as follows: a speaker box, which includes an upper cover, a lower cover forming an accommodation space with the upper cover, and a speaker unit accommodated in the accommodation space and fixed to the upper cover, the lower The position of the cover corresponding to the speaker unit is provided with a bottom wall of the bottom cover and an annular blocking wall extending from the bottom wall of the bottom cover toward the direction of the upper cover, and the speaker box further includes a cover provided on the annular blocking wall The upper cover is provided with a bottom wall of the upper cover and a baffle extending from the bottom wall of the upper cover toward the direction of the lower cover and abutting the air-permeable spacer in the area where the speaker unit is not placed on the upper cover , The bottom wall of the lower cover, the annular baffle wall, and the air-permeable partition form a first filling cavity containing sound-absorbing material, and the speaker box further includes a side of the baffle far away from the speaker unit In the second filling cavity, the annular baffle wall is provided with a gap that connects the second filling cavity and the first filling cavity toward the direction of the second filling cavity.

Further, the projection of a section of the annular blocking wall in the direction of the second filling cavity along the assembling direction of the upper cover and the lower cover and the projection of the baffle along the assembling direction of the upper cover and the lower cover The projections coincide.

Further, the lower cover also includes two sets of oppositely arranged long-axis side walls and a short-axis side wall arranged oppositely and connecting the two sets of long-axis side walls. The extension direction of the baffle is in line with that of the short-axis side walls. The extension direction is the same, and the two ends of the baffle respectively abut against the inner wall surfaces of the two sets of long axis side walls.

Further, the annular retaining wall includes two groups of long axis retaining walls corresponding to the long axis side walls, and two groups of short axis retaining walls corresponding to the two groups of short axis retaining walls and connecting the two groups of long axis retaining walls. The two groups of the long shaft retaining walls are respectively connected to the inner wall surfaces of the two groups of the long shaft side walls, wherein one group of the short shaft retaining walls is connected to the inner wall surfaces of the short shaft side walls, and the other group is connected to the inner wall surfaces of the short shaft side walls. One section of the short shaft blocking wall of the shaft blocking wall is provided with the notch, and the short shaft blocking wall with the notch is arranged at intervals from the corresponding side wall of the short shaft.

Further, the two ends of the notch respectively extend to the two opposite long shaft retaining walls.

Further, the baffle and the air-permeable spacer are sealed by foam.

Further, the baffle and the air-permeable spacer are sealed by dispensing glue.

Further, the speaker box further includes a flexible circuit board electrically connected to the speaker unit, one end of the flexible circuit board is connected to the speaker unit, and the other end of the flexible circuit board extends toward the baffle .

Further, the bottom wall of the upper cover is provided with a powder filling hole for filling the sound-absorbing material, and the powder filling hole is in communication with the second filling cavity.

Further, an area of the upper cover corresponding to the speaker unit is provided with a through hole that penetrates the upper cover and communicates with the accommodating space, and the upper cover further includes a cover provided with the through hole and fixed to the The upper cover of the steel sheet.

Beneficial effect

The beneficial effect of the utility model is that the speaker box of the utility model is enclosed by the bottom wall of the lower cover, the annular baffle wall on the bottom wall of the lower cover, and the air-permeable spacer fixed on the annular baffle wall to form a first filling cavity containing the sound-absorbing material And the notch on the ring-shaped baffle wall connects the second filling cavity of the sound-absorbing material on the side of the baffle away from the speaker unit and the first filling cavity into a whole, so that only one filling of powder is required, which improves the efficiency of assembly and also Reduced costs.

Description of the drawings

Figure 1 is a schematic diagram of the overall structure of a speaker box provided by an embodiment of the present invention;

Figure 2 is a schematic diagram of an exploded structure of a speaker box provided by an embodiment of the present invention;

Figure 3 is a schematic diagram of the structure of the upper cover provided by the embodiment of the present invention;

Figure 4 is a partial structural diagram of a speaker box provided by an embodiment of the present invention;

Figure 5 is a schematic diagram of the structure of the lower cover provided by the embodiment of the present invention;

Fig. 6 is a schematic cross-sectional view taken along the A-A direction of Fig. 1;

FIG. 7 is a schematic diagram of an enlarged structure of part B in FIG. 6.

Embodiments of the present invention

The present utility model will be further explained below in conjunction with the drawings and embodiments.

As shown in Figures 1 to 3, it is a speaker box provided by an embodiment of the present invention. Please refer to Figures 5 and 6 together. The speaker box includes an upper cover 1 and a lower cover forming a receiving space 6 with the upper cover 1. 2 and the speaker unit 3 housed in the accommodating space 6 and fixed to the upper cover 1. The lower cover 2 is provided with a lower cover bottom wall 21 at a position corresponding to the speaker unit 3 and extends from the lower cover bottom wall 21 toward the upper cover 1 The loudspeaker box also includes a ventilated spacer 4 covering the annular stop wall 24. The upper cover 1 is provided with an upper cover bottom wall 11 and a self-topping bottom wall in the area where the speaker unit 3 is not placed. 11 extends toward the lower cover 2 and abuts against the baffle 12 of the air-permeable spacer 4, the bottom wall 21 of the lower cover, the annular barrier wall 24 and the air-permeable spacer 4 together form a first filling cavity 61 containing sound-absorbing material. The speaker box also includes The second filling cavity 62 is arranged on the side of the baffle 12 away from the speaker unit 3, and the annular blocking wall 24 faces the second filling cavity 62 with a gap 7 connecting the second filling cavity 62 and the first filling cavity 61.

Compared with the related art, the speaker box of the present invention is enclosed by the bottom wall 11 of the lower cover, the annular baffle wall 24 on the bottom wall 11 of the lower cover, and the air-permeable spacer 4 fixed on the annular baffle wall 24 to form a second accommodating sound-absorbing material. A filling cavity 61, and the notch 7 on the annular blocking wall 24 can connect the second filling cavity 62 containing the sound-absorbing material on the side of the baffle 12 away from the speaker unit 3 and the first filling cavity 61 into a whole, so when filling The powder only needs to be filled once, which improves the efficiency of assembly and reduces the cost.

In this embodiment, the air-permeable spacer 4 and the annular baffle wall 24 are fixed by hot melt, so that there is no gap between the air-permeable spacer 4 and the ring baffle 24, preventing powder leakage. Of course, the air-permeable spacer 4 and the annular blocking wall 24 can also be fixed in other ways, such as glue dispensing, etc., which is not limited in this embodiment. The air-permeable spacer 4 only needs to cover the annular blocking wall 24 and does not need to extend into the second filling cavity 62, which can save materials and costs.

Please further refer to FIG. 4, the lower cover 2 also includes two sets of oppositely arranged long-axis side walls 22 and a short-axis side wall 23 arranged oppositely and connecting the two sets of long-axis side walls 22. The extension direction of the baffle 12 is opposite to the short-axis side. The walls 23 extend in the same direction, and both ends of the baffle 12 abut against the inner wall surfaces of the two sets of long-axis side walls 22 respectively. The extension direction of the baffle 12 is the same as the extension direction of the short-axis side wall 23, so that the length of the baffle 12 is minimized, the baffle 12 is prevented from occupying too much space, and the space of the second filling cavity 62 is larger. The two ends of the baffle 12 respectively abut the inner wall surfaces of the two sets of long-axis side walls 22, which can further enhance the sealing effect and prevent powder leakage. The baffle 12 and the upper cover 1 are an integral structure, which is easy to process. In this embodiment, the baffle 12 and the air-permeable spacer 4 are sealed by foam, or they can be sealed with glue to avoid powder leakage.

Please further refer to FIG. 5, the annular retaining wall 24 includes two groups of long axis retaining walls 241 corresponding to the long axis side walls 22 and short axis corresponding to the two groups of short axis side walls 23 and connecting the two groups of long axis retaining walls 241. The retaining wall 242, the two groups of long axis retaining walls 241 are respectively connected to the inner wall surfaces of the two groups of long axis side walls 22, one set of short axis retaining walls 242 is connected to the inner wall surface of the short axis side walls 23, and the other set of short axis retaining walls A gap 7 is defined in one section of the wall 242, and the short-axis blocking wall 242 with the gap 7 is spaced apart from the corresponding short-axis side wall 23. Preferably, the two ends of the notch 7 respectively extend to the two opposite long-axis blocking walls 241, so that the area of the notch 7 is increased, which can improve the flow of powder from the second filling cavity 62 to the first filling cavity 61 during powder filling. s efficiency.

Preferably, as shown in FIGS. 6 and 7, the projection of a section of the short-axis barrier wall 242 in the direction of the second filling cavity 62 along the assembly direction of the upper cover 1 and the lower cover 2 and the baffle 12 along the upper cover 1 and the lower cover 2 The projections of the assembly direction overlap, so that the annular blocking wall 24 and the air-permeable spacer 4 and the air-permeable spacer 4 and the baffle 12 achieve a better sealing effect.

In this embodiment, the speaker box further includes a flexible circuit board 5 electrically connected to the speaker unit 3. One end of the flexible circuit board 5 is connected to the speaker unit 3, and the other end of the flexible circuit board 5 extends toward the baffle 12. 3 is electrically connected to the flexible circuit board 5 so that the speaker unit 3 is energized and works normally.

In this embodiment, the bottom wall 11 of the upper cover is provided with a powder filling hole 13 for filling sound-absorbing material. The powder filling hole 13 communicates with the second filling cavity 62, and the sound absorbing material is filled into the second filling cavity 62 through the powder filling hole 13 . In this embodiment, the upper cover 1 corresponds to the speaker unit 3 with a through hole 14 that penetrates the upper cover 1 and communicates with the accommodating space 6. The upper cover 1 also includes a steel sheet that covers the through hole 14 and is fixed to the upper cover 1. 16. The steel sheet 16 can increase the strength of the upper cover 1. The bottom wall 21 of the lower cover of this embodiment is also a steel sheet structure.

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 speaker box comprising an upper cover, a lower cover forming an accommodation space with the upper cover, and a speaker unit accommodated in the accommodation space and fixed to the upper cover, characterized in that the lower cover corresponds to the speaker The position of the monomer is provided with a bottom wall of the lower cover and an annular barrier wall extending from the bottom wall of the lower cover toward the direction of the upper cover, and the speaker box further includes a gas-permeable partition covering the annular barrier wall, The upper cover is provided with an upper cover bottom wall and a baffle extending from the upper cover bottom wall toward the lower cover direction and abutting the air-permeable spacer in the area where the speaker unit is not placed, the lower cover The bottom wall, the annular baffle wall, and the air-permeable spacer form a first filling cavity containing sound-absorbing materials, and the speaker box further includes a second filling cavity provided on the side of the baffle far away from the speaker unit , The annular baffle wall is provided with a gap that connects the second filling cavity and the first filling cavity toward the direction of the second filling cavity.
The speaker box according to claim 1, wherein the projection of a section of the annular blocking wall in the direction of the second filling cavity along the assembling direction of the upper cover and the lower cover and the projection of the baffle along the direction The projections of the assembly direction of the upper cover and the lower cover coincide.
The speaker box according to claim 1, wherein the lower cover further comprises two sets of long-axis side walls arranged oppositely and a short-axis side wall arranged oppositely and connecting the two sets of long-axis side walls, the baffle The extension direction of is the same as the extension direction of the short-axis side walls, and both ends of the baffle abut the inner wall surfaces of the two groups of the long-axis side walls respectively.
The speaker box according to claim 3, wherein the annular barrier wall includes two sets of long-axis barrier walls corresponding to the long-axis side walls, and two sets of long-axis barrier walls corresponding to the short-axis side walls and connected to each other. The short-axis retaining walls of the two groups of long-axis retaining walls, the two groups of the long-axis retaining walls are respectively connected to the inner wall surfaces of the two groups of the long-axis side walls, and one group of the short-axis retaining walls is connected to the side of the short-axis The inner wall surfaces of the walls are connected, and one of the short shaft blocking walls of the other set of short shaft blocking walls is provided with the notch, and the short shaft blocking wall provided with the notch is connected to the corresponding short shaft The sidewalls are arranged at intervals.
The loudspeaker box according to claim 4, wherein the two ends of the notch respectively extend to the two opposite long-axis retaining walls.
The speaker box according to claim 1, wherein the baffle and the air-permeable spacer are sealed by foam.
The speaker box according to claim 1, wherein the baffle and the air-permeable partition are sealed by dispensing glue.
The speaker box according to claim 1, wherein the speaker box further comprises a flexible circuit board electrically connected to the speaker unit, one end of the flexible circuit board is connected to the speaker unit, and the flexible circuit board The other end of the circuit board extends toward the baffle.
The speaker box according to claim 1, wherein the bottom wall of the upper cover is provided with a powder filling hole for filling the sound-absorbing material, and the powder filling hole is in communication with the second filling cavity.
The speaker box according to claim 1, wherein the area of the upper cover corresponding to the speaker unit is provided with a through hole that penetrates the upper cover and communicates with the accommodating space, and the upper cover further comprises The through hole is covered and fixed to the steel sheet of the upper cover.