WO2021000153A1

WO2021000153A1 - Speaker box

Info

Publication number: WO2021000153A1
Application number: PCT/CN2019/094053
Authority: WO
Inventors: 李红; 王程良; 施胜荣
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: 2019-06-30
Filing date: 2019-06-30
Publication date: 2021-01-07
Also published as: CN110381395A

Abstract

The present application provides a speaker box, comprising an upper cover, a lower cover covered by and fixed to the upper cover to together form an accommodating space, and a sound-producing unit accommodated in the accommodating space. The sound-producing unit divides the accommodating space into a front cavity and a rear cavity. The rear cavity comprises a first sub rear cavity accommodating the sound-producing unit, and a second sub rear cavity and a third sub rear cavity separately communicated with the first sub rear cavity. The speaker box further comprises an air-permeable isolator. The air-permeable isolator, the upper cover, and the lower cover together enclose the second sub rear cavity, and both the second sub rear cavity and the third sub rear cavity are communicated with the first sub rear cavity by means of the air-permeable isolator. Compared with the related art, the speaker box provided by the present application effectively increases the filling volume of the rear cavity and the cross-sectional area of the isolating film, thereby improving the space utilization and product competitiveness of the speaker box.

Description

Speaker box

Technical field

This application relates to the field of electro-acoustic conversion, 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 portable mobile terminal devices. At present, the functions of mobile phones are extremely diverse, one of which is high-quality music functions. Therefore, speakers for playing sound are widely used in current smart mobile devices.

technical problem

The speaker box of the related art includes an upper cover, a lower cover which is covered on the upper cover and forms a containing space together, and a sounding unit contained in the containing space, and the sounding unit divides the containing space into a front cavity And back cavity. The rear cavity is often provided with multiple sub-rear cavities for storing speakers and filling sound-absorbing particles.

However, in the related art speaker box, there is no connection between different sub-rear cavities, and each is equipped with an isolation membrane for separating sound-absorbing particles. In this way, on the one hand, the volume of the back cavity is small, and on the other hand, the cross-sectional area of the isolation membrane is not large enough, which wastes the space of the back cavity and has low competitiveness.

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

Technical solutions

The technical problem to be solved by this application is to provide a loudspeaker box that can improve space utilization and has stronger product competitiveness.

In order to solve the above technical problems, the present application provides a speaker box, which includes an upper cover, a lower cover fixed to the upper cover and forming a containing space together, and a sounding monomer contained in the containing space. The vocal monomer divides the receiving space into a front cavity and a rear cavity. The rear cavity includes a first sub-rear cavity for accommodating the vocal monomer and a second sub-rear cavity respectively connected with the first sub-rear cavity And the third sub-rear cavity, the speaker box further includes a gas-permeable spacer, the gas-permeable spacer, the upper cover and the lower cover jointly enclose the second sub-rear cavity, and the second sub-rear Both the cavity and the third sub-rear cavity are communicated with the first sub-rear cavity through the air-permeable spacer.

Preferably, the upper cover includes a top wall disposed opposite to the lower cover, side walls extending from the top wall to the lower cover, and a connecting wall, and the speaker box further includes In the connecting cavity formed by bending, the first sub-rear cavity communicates with the third sub-rear cavity through the connecting cavity.

Preferably, the connecting wall includes a first sub-connecting wall extending from the top wall to the lower cover, a second sub-connecting wall extending vertically from the first sub-connecting wall, and a second sub-connecting wall extending from the third The sub-connecting wall continues to vertically bend and extend the third sub-connecting wall, the first sub-connecting wall is arranged opposite to the third sub-connecting wall, the first sub-connecting wall, the second sub-connecting wall, and the One end of the third sub-connecting wall is fixedly connected to the side wall, and the other end and the top wall jointly enclose a first opening, the third sub-connecting wall is provided with a second opening, and the connecting cavity passes through the The first opening is in communication with the first sub-rear cavity, and the connecting cavity is in communication with the third sub-rear cavity through the second opening.

Preferably, the top wall, the side wall, the first sub-connecting wall and the air-permeable spacer jointly enclose the second sub-rear cavity.

Preferably, the air-permeable isolating member includes an insert plate with a plurality of air holes and a first isolating film attached to the insert plate, the first isolating film covers the air holes, and part of the air holes and the The second sub-rear cavity is in communication, and another part of the vent holes is in communication with the connecting cavity.

Preferably, a plurality of the ventilation holes are distributed in a straight line, and the distance between adjacent ventilation holes is equal.

Preferably, the upper cover further includes a fixed wall extending from the top wall toward the lower cover, and the fixed wall includes a first sub-fixing wall fixedly connected to one side of the third sub-connecting arm, and The second sub-fixed wall fixedly connected to the side wall, a first groove opened in the first sub-fixed wall along the top wall to the lower cover direction, and along the top wall to the lower cover direction A second groove opened in the second sub-fixing wall, the first groove and the second groove are disposed opposite to each other, and both ends of the air-permeable spacer are respectively clamped in the first groove and The second groove.

Preferably, the upper cover further includes a support wall extending from the top wall in the direction of the lower cover, the cross section of the support wall along the direction from the top wall to the lower cover is rectangular, and the support wall A third opening opposite to the second opening is opened, and the third opening communicates with the second opening.

Preferably, the extension length of the support wall toward the lower cover is less than the extension length of the side wall toward the lower cover, and the speaker box further includes a cover provided on a side of the support wall away from the top wall. The second isolation membrane, the supporting wall, the top wall and the second isolation membrane jointly enclose the third sub-rear cavity.

Preferably, the upper cover further includes a first powder filling hole opened on the top wall, a first sealing cover covering the first powder filling hole, a second powder filling hole opened on the top wall and a cover For the second sealing cover of the second powder filling hole, the first powder filling hole is in communication with the second sub-back cavity, and the second powder filling hole is in communication with the third sub-back cavity.

Beneficial effect

Compared with the related art, the speaker box of the present application is provided with the second sub-rear cavity and the third sub-rear cavity in communication with the first sub-rear cavity through the air-permeable partition, so that the second The sub-rear cavity and the third sub-rear cavity share the air-permeable partition, which increases the volume of the back cavity on the one hand, and increases the cross-sectional area of the isolation membrane on the other hand, which improves the back cavity of the speaker box The space utilization rate has improved product competitiveness.

Description of the drawings

In order to more clearly describe the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. 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 provided by this application;

Fig. 2 is a schematic view of another perspective three-dimensional structure of the speaker box provided by this application;

3 is an exploded schematic diagram of the three-dimensional structure of the speaker box provided by this application;

4 is an exploded schematic diagram of the three-dimensional structure of the upper cover of the speaker box provided by this application;

Figure 5 is a cross-sectional view of the speaker box shown in Figure 1 along the line V-V;

Figure 6 is an enlarged view of part A of the speaker box shown in Figure 5;

Figure 7 is a cross-sectional view of the speaker box shown in Figure 1 along line VII-VII;

Fig. 8 is an enlarged view of part B of the speaker box shown in Fig. 7.

The best mode of the invention

The technical solutions in the embodiments of the present application will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of this application.

1-8, the present application provides a speaker box 100. The speaker box 100 includes an upper cover 10, a cover fixed to the upper cover 10 and a lower cover 30 that collectively forms an accommodating space, and is accommodated in The sound emitting monomer 50, the air-permeable spacer 70 and the second isolation film 90 in the containing space. Wherein, the sound emitting monomer 50 divides the receiving space into a front cavity 102 and a rear cavity.

The rear cavity includes a first sub-rear cavity 1031 accommodating the sounding monomer 50 and a second sub-rear cavity 1033 and a third sub-rear cavity 1035 respectively communicating with the first sub-rear cavity 1031. The air-permeable spacer 70, the upper cover 10 and the lower cover 30 jointly enclose the second sub-rear cavity 1033, and the second sub-rear cavity 1033 and the third sub-rear cavity 1035 pass The air-permeable spacer 70 communicates with the first sub-rear cavity 1031.

The upper cover 10 includes a top wall 11 disposed opposite to the lower cover 30, a side wall 12 extending from the top wall 11 in the direction of the lower cover 30, a connecting wall 13, a fixing wall 14, a supporting wall 15, The first powder filling hole 16 opened in the top wall 11, the first sealing cover 17 covering the first powder filling hole 16, the second powder filling hole 18 opened in the top wall 11, and the The second sealing cover 19 of the second powder filling hole 18.

The side wall 12 extends from the periphery of the top wall 11 toward the lower cover 30, and the top wall 11, the side walls 12 and the lower cover 30 jointly enclose the receiving space.

The connecting wall 13, the side wall 12 and the air-permeable spacer 70 jointly enclose a connecting cavity 104, and the first sub-rear cavity 1031 communicates with the third sub-rear cavity 1035 through the connecting cavity 104.

Specifically, the connecting wall 13 includes a first sub-connecting wall 131 extending from the top wall 11 to the lower cover 30, and a second sub-connecting wall 133 extending vertically from the first sub-connecting wall 131. And a third sub-connection wall 135 that continues to bend and extend vertically from the second sub-connection wall 133, the first sub-connection wall 131 and the third sub-connection wall 135 are disposed oppositely, the first sub-connection wall 131. One end of the second sub-connection wall 133 and the third sub-connection wall 135 is fixedly connected to the side wall 12, and the other end and the top wall 11 together form a first opening 105, and the third The sub connecting wall 135 is provided with a second opening 1351, the connecting cavity 104 communicates with the first sub-rear cavity 1031 through the first opening 105, and the connecting cavity 104 communicates with the first sub-cavity 1031 through the second opening 1351. The three rear chambers 1035 are connected.

The top wall 11, the side wall 12, the first sub-connecting wall 131 and the air-permeable partition jointly enclose the second sub-rear cavity 1033.

The fixed wall 14 includes a first sub-fixing wall 141 fixedly connected to the third sub-connecting wall 135, a second sub-fixing wall 143 fixedly connected to the side wall 12, along the top wall 11 to the The first groove 145 opened in the first sub-fixed wall 141 in the direction of the lower cover 30 and the second groove 147 opened in the second sub-fixed wall 143 in the direction from the top wall 11 to the lower cover 30 Wherein, the first groove 145 and the second groove 147 are disposed oppositely, and two ends of the air-permeable spacer 70 are respectively clamped in the first groove 145 and the second groove 147.

The supporting wall 15 has a rectangular cross section along the direction from the top wall 11 to the lower cover 30, and the supporting wall 15 is provided with a third opening 151 opposite to the second opening 1351. The third opening 151 communicates with the second opening 1351.

The extension length of the support wall 15 to the lower cover 30 is less than the extension length of the side wall 12 to the lower cover 30, and the second isolation film 90 is disposed on the support wall 15 away from the top wall One side of 11, and the supporting wall 15, the top wall 11 and the second isolation membrane 90 jointly enclose the third sub-rear cavity 1035.

The first powder filling hole 16 communicates with the second sub-rear cavity 1031, and the second powder filling hole 18 communicates with the third sub-rear cavity 1035. The speaker box 100 adds sound-absorbing particles into the second sub-rear cavity 1033 and the third sub-rear cavity 1035 through the first powder filling hole 16 and the second powder filling hole 18 respectively.

The air-permeable isolator 70 includes an insert plate 71 with a plurality of air holes 711 and a first isolating film 73 attached to the insert plate 71. Wherein, the first isolation film 73 covers the vent 711, and part of the vent 711 communicates with the second sub-rear cavity, and another part of the vent 711 communicates with the connection cavity 104.

Specifically, the plurality of ventilation holes 711 are distributed in a straight line, and the distance between adjacent ventilation holes 711 is equal.

Compared with the related art, the speaker box 100 of the present application is provided with the second sub-rear cavity 1033 and the third sub-rear cavity 1035 in communication with the first sub-rear cavity 1031 through the air-permeable spacer 70, The second sub-rear cavity 1033 and the third sub-rear cavity 1035 share the air-permeable spacer 70, which increases the volume of the back cavity on the one hand, and increases the cross-sectional area of the isolation membrane on the other hand, The space utilization rate of the rear cavity of the speaker box 100 is improved, and the product competitiveness is improved.

The above are only examples of this application, and do not limit the scope of this application. Any equivalent structure or equivalent process transformation made using the content of the description and drawings of this application, or directly or indirectly applied to other related technologies In the same way, all fields are included in the scope of patent protection of this application.

Embodiments of the invention

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Industrial applicability

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Sequence Listing Free Content

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Claims

A speaker box includes an upper cover, a lower cover fixed to the upper cover and a lower cover that together form an accommodation space, and a sounding monomer accommodated in the accommodation space. The sounding monomer divides the accommodation space into The front cavity and the back cavity are characterized in that the back cavity includes a first sub-rear cavity for accommodating the sound-producing monomer, and a second sub-rear cavity and a third sub-rear cavity respectively connected to the first sub-rear cavity , The speaker box further includes a breathable spacer, the breathable spacer, the upper cover and the lower cover jointly enclose the second sub-rear cavity, and the second sub-rear cavity and the third The sub-back chambers are all communicated with the first sub-back chamber through the air-permeable spacer.
The speaker box according to claim 1, wherein the upper cover comprises a top wall disposed opposite to the lower cover, side walls and connecting walls extending from the top wall to the lower cover, so The connecting wall, the side wall and the air-permeable partition jointly enclose a connecting cavity, and the first sub-rear cavity is communicated with the third sub-rear cavity through the connecting cavity.
The speaker box according to claim 2, wherein the connecting wall comprises a first sub-connecting wall extending from the top wall to the lower cover, and a vertical bending extension from the first sub-connecting wall A second sub-connection wall and a third sub-connection wall that continues to be vertically bent and extended from the second sub-connection wall, the first sub-connection wall and the third sub-connection wall are disposed opposite to each other, and the first sub-connection One end of the wall, the second sub-connection wall, and the third sub-connection wall is fixedly connected to the side wall, and the other end and the top wall jointly enclose a first opening, and the third sub-connection wall is provided with A second opening, the connecting cavity is communicated with the first sub-rear cavity through the first opening, and the connecting cavity is communicated with the third sub-rear cavity through the second opening.
The speaker box according to claim 3, wherein the top wall, the side wall, the first sub-connecting wall and the air-permeable partition jointly enclose the second sub-rear cavity.
The speaker box according to claim 4, wherein the air-permeable isolator comprises an insert plate with a plurality of air holes and a first isolating film attached to the insert plate, and the first isolating film covers the air-permeable And some of the vent holes communicate with the second sub-rear cavity, and another part of the vent holes communicate with the connecting cavity.
The speaker box according to claim 5, wherein a plurality of the air holes are distributed in a straight line, and the distance between adjacent air holes is equal.
The speaker box according to claim 5, wherein the upper cover further comprises a fixed wall extending from the top wall toward the lower cover, and the fixed wall comprises a fixed wall fixed to the third sub-connecting wall The connected first sub-fixed wall, the second sub-fixed wall fixedly connected with the side wall, the first groove opened in the first sub-fixed wall along the direction from the top wall to the lower cover and along the A second groove of the second sub-fixing wall is opened in the direction from the top wall to the lower cover, the first groove is opposite to the second groove, and both ends of the air-permeable spacer are respectively clamped Set in the first groove and the second groove.
The speaker box according to claim 3, wherein the upper cover further comprises a supporting wall extending from the top wall to the lower cover, and the supporting wall extends along the top wall to the lower cover The cross section of the direction is rectangular, the supporting wall is provided with a third opening opposite to the second opening, and the third opening is communicated with the second opening.
The speaker box according to claim 8, wherein the extension length of the support wall to the lower cover is less than the extension length of the side wall to the lower cover, and the speaker box further comprises a cover installed at the The supporting wall is away from the second isolation membrane on one side of the top wall, and the supporting wall, the top wall and the second isolation membrane jointly enclose the third sub-rear cavity.
The speaker box according to claim 2, wherein the upper cover further comprises a first powder filling hole opened in the top wall, a first sealing cover covering the first powder filling hole, and The second powder filling hole of the top wall and a second sealing cover covering the second powder filling hole, the first powder filling hole is in communication with the second sub-back cavity, and the second powder filling hole is connected to the The third sub-back cavity is connected.