WO2021138953A1

WO2021138953A1 - Speaker enclosure

Info

Publication number: WO2021138953A1
Application number: PCT/CN2020/074343
Authority: WO
Inventors: 吴军; 魏威
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: 2020-01-09
Filing date: 2020-02-05
Publication date: 2021-07-15
Also published as: CN211321489U

Abstract

Provided is a speaker enclosure, comprising: a lower cover; an upper cover forming an accommodation space together with the lower cover; a speaker unit; and a breathable spacer assembly. The upper cover comprises an upper cover main body and a supporting wall. The speaker unit is fixed to and supported at the supporting wall, and divides the accommodation space into a front cavity and a rear cavity. The breathable spacer assembly divides the rear cavity into a first rear cavity and a second rear cavity in air communication with each other. The breathable spacer assembly comprises a frame and a breathable spacer. The frame covers the speaker unit and is fixed to the supporting wall. The frame is provided with a relief hole extending therethrough. The breathable spacer is fixedly attached to the frame and completely covers the relief hole. The second rear cavity is filled with sound-absorbing particles. The breathable spacer assembly seals the sound-absorbing particles in the second rear cavity. Compared with the related art, the speaker enclosure of the present invention has high filling efficiency and excellent low frequency acoustic performance.

Description

Speaker box

Technical field

The utility model relates to the technical field of an electro-acoustic conversion device, in particular to a speaker box.

Background technique

With the advent of the mobile Internet era, the number of smart mobile devices continues to rise. Among many mobile devices, mobile phones are undoubtedly the most common and most portable mobile terminal devices. At present, the functions of mobile phones are extremely diverse, one of which is high-quality music functions. Therefore, speaker boxes for playing sound are widely used in today's smart mobile devices.

The speaker box of the related art includes an upper cover, a lower cover assembled with the upper cover to form an accommodating space, a sounding monomer and a ventilating partition accommodated in the accommodating space; the sounding monomer and the upper cover Enclosed into a front cavity, the sounding monomer, the upper cover and the lower cover jointly enclose a rear cavity, a barrier wall is formed in the rear cavity, and the air-permeable spacer is attached to the barrier wall and is connected to the barrier wall. The blocking wall jointly partitions the rear cavity into a first rear cavity and a second rear cavity that are in air communication with each other, and the sound-producing monomer part is located in the first rear cavity.

technical problem

However, in the related art speaker box, the barrier wall and the air-permeable partition encapsulate the sound-absorbing particles in the second back cavity to form a DBASS space that serves as a virtual sound cavity. However, the back cavity cannot be used efficiently due to the design limitation of the barrier wall structure. , Thereby limiting the low-frequency acoustic performance of the speaker box.

Therefore, it is necessary to provide a new speaker box to solve the above technical problems.

Technical solutions

The purpose of the utility model is to provide a loudspeaker box with high filling efficiency and good low-frequency acoustic performance.

In order to achieve the above objective, the present invention provides a loudspeaker box, which includes a lower cover, an upper cover covering the lower cover and enclosing a containing space together, a sounding monomer contained in the containing space, and a breathable Isolation component; the upper cover includes an upper cover body covering the lower cover and a ring-shaped support wall protruding from the upper cover body to the lower cover, the sound-producing monomer is supported and fixed On the supporting wall, and divide the containing space into a front cavity and a back cavity, the air-permeable isolation assembly is located in the back cavity and separates the back cavity into a first back cavity and a second air communicating with each other In the rear cavity, the air-permeable isolation assembly includes a bracket and an air-permeable isolator, the bracket covers the sound-producing monomer and is fixed to the support wall, and the bracket is provided with a leakage hole penetrating it, and the air-permeable isolator The parts are attached and fixed to the bracket and completely cover the leakage hole; the second back cavity is filled with sound-absorbing particles, and the air-permeable isolation component encapsulates the sound-absorbing particles in the second back cavity.

Preferably, a glue containing groove for accommodating glue is formed between the supporting wall and the sound-producing monomer, and the bracket and the sound-producing monomer are supported and fixed to the supporting wall by the glue.

Preferably, the supporting wall includes a first supporting wall protruding from the upper cover body in the direction of the lower cover and a second supporting wall extending from the outer periphery of the first supporting wall in the direction of the lower cover The sounding monomer is supported and fixed to an end of the first supporting wall close to the lower cover, and the sounding monomer is spaced apart from the second supporting wall.

Preferably, the bracket includes a bracket body which is arranged directly opposite to the vocal unit and a ring-shaped first extension portion bent and extended from the periphery of the bracket body in a direction close to the upper cover; An extension part is located between the sound emitting monomer and the second support wall; the leakage hole penetrates the bracket body and the first extension part at the same time.

Preferably, the gas-permeable spacer includes a gas-permeable spacer body attached to the bracket body and a second extension portion bent and extended from the gas-permeable spacer body toward the upper cover, and the second extension portion Fixed to the first extension part.

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

Preferably, the bracket is made of steel sheet.

Preferably, the speaker box further includes a conductive terminal electrically connected to the sound-producing monomer; the bracket further includes a relief groove penetrating through the first extension; the conductive terminal is routed through the relief groove The first rear cavity extends to the second rear cavity.

Beneficial effect

Compared with the related art, the speaker box of the present invention does not have additional structures such as retaining walls and inserts in the rear cavity to form a filling space filled with sound-absorbing particles, but directly surrounds the sound-producing monomer with air-permeable spacers. The air-permeable isolation component, and the air-permeable isolation component is fixed by glue in the glue containing space of the fixed sounding monomer. This structure makes the second back cavity of the air-permeable isolation component far away from the sounding monomer after being filled with sound-absorbing particles. As a virtual sound cavity, the volume of the first back cavity is made as small as possible, and the volume of the second back cavity is made as large as possible, that is, the effective utilization rate of the back cavity as a virtual sound cavity is greatly improved.

Description of the drawings

In order to more clearly explain the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings needed in the description of the embodiments. Obviously, the drawings in the following description are only some implementations of the present utility model. For example, for those of ordinary skill in the art, without creative work, other drawings can be obtained based on these drawings, among which:

Figure 1 is a schematic diagram of the three-dimensional structure of the speaker box of the present invention;

Figure 2 is an exploded schematic diagram of a part of the three-dimensional structure of the speaker box of the present invention;

Figure 3 is a schematic diagram of the assembly structure of the speaker box of the present invention without the lower cover;

Figure 4 is a schematic diagram of the three-dimensional structure of the ventilating isolation component of the present invention;

Figure 5 is a cross-sectional view taken along line A-A in Figure 1;

Fig. 6 is an enlarged view of the part B shown in Fig. 5.

Embodiments of the present invention

The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, not all of them. Examples. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the scope of protection of the present utility model.

Please refer to FIGS. 1-6 at the same time. The present invention provides a speaker box 100, which includes a lower cover 1, an upper cover 2, a sound-producing monomer 3, an air-permeable isolation component 4, and a conductive terminal 5. The lower cover 1 covers the upper cover 2 and forms a receiving space 10 together.

The sound emitting unit 3 is received in the receiving space 10 and supported by 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 projecting from the upper cover body 21 in the direction of the lower cover, and The sound guide channel 23 of the upper cover body 21.

In this embodiment, the supporting wall 22 includes a first supporting wall 221 protruding from the upper cover body 21 toward the lower cover 1, and a first supporting wall 221 extending from the outer periphery of the first supporting wall 221 toward the lower cover 1. The second supporting wall 222 extending in the direction of the cover 1, that is, the first supporting wall 221 and the second supporting wall 222 form a supporting step structure.

The sound emitting unit 3 is supported and fixed to the supporting wall 22 and divides the receiving space 10 into a front cavity 101 and a rear cavity 102. In this embodiment, the sound emitting monomer 3 is supported and fixed to the first supporting wall 221 by glue.

Specifically, the sounding monomer 3 is supported and fixed to an end of the first supporting wall 221 close to the lower cover 1, and the sounding monomer 3 and the second supporting wall 222 are spaced apart, that is, supported and fixed to On the supporting step structure formed by the first supporting wall 221 and the second supporting wall 222. The sounding monomer 3 and the second supporting arm 222 are spaced to form a glue containing groove 8, and the sounding monomer 3 is fixed to the lower cover 1 after being glued in the glue containing groove 8.

The sound unit 3 includes a diaphragm 31 for vibrating and sounding. The diaphragm 31 is spaced from the upper cover body 21 to form a front acoustic cavity 6, and the sound guide channel 23 connects the front acoustic cavity 6 with the outside world. The front cavity 101 is formed together to form a side sounding structure. The sound emitting monomer 3, the upper cover 2 and the lower cover 1 jointly enclose the rear cavity 102 for improving low-frequency acoustic performance.

The air-permeable isolation assembly 4 is located in 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-emitting monomer 3 is at least partially located in the first rear cavity 1021, the second rear cavity 1022 is filled with sound-absorbing particles 7, and the air-permeable isolation component 4 encapsulates the sound-absorbing particles 7 in the second rear cavity 1022 to form a DBASS virtual acoustic cavity to further improve the low-frequency acoustic performance.

Specifically, the air-permeable isolation assembly 4 includes a bracket 41 and an air-permeable isolation member 42.

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

The bracket 41 is fixed to the support arm 22 and completely covers the sound-producing monomer 3, and the bracket 41 is provided with a leakage hole 43 penetrating therethrough, and the air-permeable spacer 42 is attached and fixed to the bracket 41 and completely cover the leak hole 43.

The bracket 41 includes a bracket body 411 disposed directly opposite to the sound emitting unit 3, a ring-shaped first extension 412 that is bent and extended from the periphery of the bracket body 411 toward the upper cover 2 and The recess 413 passes through the first extension 412; the first extension 412 is located between the sound emitting monomer 3 and the second support wall 222; the leak hole 43 passes through the bracket body at the same time 411 and the first extension 412.

The bracket 41 is fixed in the glue containing groove 8 on the outer peripheral side of the sounding monomer 3 by glue, and the glue connects the bracket 41 and the sounding monomer 3 into one body and forms a solidification.

In this embodiment, the bracket 41 and the air-permeable spacer 42 make the air-permeable spacer element 4 form a three-dimensional structure, so that the second rear cavity 1022 of the air-permeable spacer element 4 away from the sound-producing monomer 3 is filled The sound-absorbing particles 7 are all used as DBASS virtual sound chambers. This structural arrangement makes the volume of the first back cavity 1021 as small as possible, and makes the volume of the second back cavity 1022 as large as possible, that is, the effective utilization rate of the back cavity 102 as a virtual acoustic cavity is greatly improved.

In this embodiment, the leakage hole 43 includes two, and the two leakage holes 43 are respectively opened on opposite sides of the bracket 41. The shape of the leakage hole 43 is not limited, and the leakage hole can be designed according to actual conditions.孔413.

Specifically, the gas-permeable spacer 42 includes a gas-permeable spacer body 421 attached to the bracket body 411 and a second extension portion 422 that is bent and extended from the gas-permeable spacer body 421 in the direction of the upper cover 2. The second extension portion 422 is fixed to the first extension portion 412.

The conductive terminal 5 is electrically connected to the sound emitting unit 3 and extends from the first rear cavity 1021 to the second rear cavity 1022, and extends to the outside of the speaker box 100 through the second rear cavity 1022, It is used to introduce external electrical signals to the sounding monomer 3.

In this embodiment, the conductive terminal 5 extends from the first back cavity 1021 to the second back cavity 1022 through the relief groove 413. Of course, when the conductive terminal 5 extends through the relief groove 413, the relief groove 413 needs to form a seal to prevent the sound-absorbing particles 7 from entering the first rear cavity 1021 from the relief groove 413.

The above are only the embodiments of the utility model, and do not limit the patent scope of the utility model. Any equivalent structure or equivalent process transformation made by using the description and drawings of the utility model, or directly or indirectly applied to other Related technical fields are included in the scope of patent protection of the utility model in the same way.

Claims

A loudspeaker box, comprising a lower cover, an upper cover covered on the lower cover and enclosing a containing space, a sounding monomer contained in the containing space, and a ventilating isolation component; the upper cover includes a cover On the upper cover body of the lower cover and a ring-shaped support wall protruding from the upper cover body in the direction of the lower cover, the sound-producing monomer is supported and fixed to the support wall, and the The accommodating space is divided into a front cavity and a rear cavity, and the air-permeable isolation component is located in the rear cavity and separates the rear cavity into a first rear cavity and a second rear cavity that are in air communication with each other. The isolation assembly includes a bracket and an air-permeable spacer, the bracket covers the sound-producing monomer and is fixed to the support wall, and the bracket is provided with a leakage hole passing through it, and the air-permeable spacer is attached and fixed to the support wall. The bracket completely covers the leakage hole; the second back cavity is filled with sound-absorbing particles, and the air-permeable isolation component encapsulates the sound-absorbing particles in the second back cavity.
The loudspeaker box according to claim 1, wherein a glue containing groove for accommodating glue is formed between the supporting wall and the sounding monomer, and the bracket and the sounding monomer are supported and fixed by the glue于The supporting wall.
The speaker box according to claim 1, wherein the supporting wall includes a first supporting wall protruding from the upper cover body in the direction of the lower cover, and an outer peripheral edge of the first supporting wall. A second supporting wall extending in the direction of the lower cover, the sounding monomer is supported and fixed to an end of the first supporting wall close to the lower cover, and the sounding monomer is spaced apart from the second supporting wall .
The speaker box according to claim 3, wherein the bracket comprises a bracket body which is arranged directly opposite to the sound emitting unit, and a bracket body which is bent and extends from the periphery of the bracket body in a direction close to the upper cover. An annular first extension part; the first extension part is located between the sound emitting monomer and the second support wall; the leakage hole penetrates the bracket body and the first extension part at the same time.
The speaker box according to claim 4, wherein the breathable spacer comprises a breathable spacer body attached to the bracket body and a breathable spacer body bent and extended from the breathable spacer body toward the upper cover The second extension part is fixed to the first extension part.
The speaker box according to claim 4, wherein the leakage hole includes two, and the two leakage holes are respectively opened on opposite sides of the bracket.
The speaker box according to claim 1, wherein the bracket is made of steel sheet.
The speaker box according to claim 4, wherein the speaker box further comprises a conductive terminal electrically connected to the sound-producing unit; the bracket further comprises a relief groove penetrating the first extension part; The conductive terminal extends from the first back cavity to the second back cavity through the relief groove.