WO2021174562A1

WO2021174562A1 - Loudspeaker box

Info

Publication number: WO2021174562A1
Application number: PCT/CN2020/078515
Authority: WO
Inventors: 童迪江
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: 2020-03-04
Filing date: 2020-03-10
Publication date: 2021-09-10
Also published as: CN211720690U

Abstract

A loudspeaker box (100), comprising a housing (11) having an accommodation space, and a sound production cell (12), sound absorption particles (15), and a gas-permeable spacer (13) which are accommodated in the accommodation space of the housing (11). The sound production cell (12) divides the accommodation space into a front cavity and a rear cavity (113) opposite to the front cavity; the housing (11) comprises a top wall (1111) opposite to the sound production cell (12) and a first through hole (1114) provided on the top wall (1111) and communicated with the rear cavity (113); the rear cavity (113) is communicated with the outside by means of the first through hole (1114); a blockage portion (1117) extending towards the rear cavity (113) is further provided on the top wall (1111); the blockage portion (1117) and the top wall (1111) form a gas-permeable space (1118) communicated with the first through hole (1114); an opening (11171) communicated with the gas-permeable space (1118) is formed on the blockage portion (1117); the gas-permeable spacer (13) is mounted on the blockage portion (1117) and closes the opening (11171). The loudspeaker box (100) can maintain the smooth communication between the first through hole (1114) and the rear cavity (113) all the time, thereby ensuring the smoothness of the leakage of the rear cavity (113) of the loudspeaker box (100), and has a simple structure and strong practicability.

Description

Speaker box

Technical field

The invention relates to the field of electronic products, 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 related art loudspeaker box includes a lower cover, an upper cover assembled with the lower cover to form an accommodation space, and a sounding unit accommodated in the accommodation space, and the sounding unit and the upper cover enclose a front cavity, The sound-producing monomer, the lower cover and the upper cover jointly enclose a rear cavity, and the upper cover or the lower cover is provided with a leakage hole connecting the rear cavity and the outside. The speaker box further includes sound-absorbing particles filled in the rear cavity for improving the low frequency of the speaker box. When the sound-absorbing particles are filled in the rear cavity, the sound-absorbing particles directly contact the leakage hole, which easily causes the leakage hole to be blocked, blocking the communication channel between the rear cavity and the outside, thereby causing the The back cavity leaks poorly, thereby affecting the performance of the speaker box.

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

technical problem

The purpose of the present invention is to provide a loudspeaker box that can ensure smooth leakage of the rear cavity.

Technical solutions

In order to achieve the above objective, the present invention provides a speaker box, which includes a housing with a housing space, a sounding monomer, sound-absorbing particles, and a breathable isolator housed in the housing space of the housing. The housing separates the receiving space into a front cavity and a rear cavity opposite to the front cavity. The housing includes a top wall opposite to the sound-emitting monomer and a first wall arranged on the top wall and communicating with the rear cavity. A through hole, the rear cavity communicates with the outside through the first through hole, wherein the top wall is further provided with a blocking portion extending toward the rear cavity, and the blocking portion and the top wall form a contact with the outside The air-permeable space communicated with the first through hole, the barrier portion is provided with an opening that communicates with the air-permeable space, and the air-permeable spacer is installed on the barrier portion and closes the opening.

Preferably, the blocking portion is an annular wall protruding from the top wall.

Preferably, the opening is provided at an end of the blocking portion away from the first through hole and directly opposite to the first through hole.

Preferably, the blocking portion has a cylindrical shape or a square column shape.

Preferably, the air-permeable spacer is provided with a third groove, and the third groove is in communication with the air-permeable space.

Preferably, the first through hole and the first groove are arranged directly opposite to each other.

Preferably, the breathable spacer is any one of a damping cloth, a non-woven cloth or a dust-free mesh cloth, a nylon woven mesh or a metal mesh.

Preferably, the housing includes an upper cover and a lower cover, the upper cover and the lower cover are assembled to form the receiving space, the top wall is provided on the upper cover; the top wall is provided with the A second through hole communicated with the rear cavity, and the sound-absorbing particles are filled in the rear cavity through the second through hole.

Beneficial effect

Compared with the related art, the above-mentioned speaker box provided by the present invention provides a barrier part surrounding the first through hole in the top wall of the housing, and a breathable spacer is arranged on the barrier part, and the top wall, the barrier part and the breathable spacer are jointly enclosed. The air-permeable space connecting the first through hole and the rear cavity is formed, and the blocking part and the air-permeable partition can prevent the sound-absorbing particles from contacting or even block the first through hole, avoiding the leakage of the rear cavity, and the structure is simple and practical.

Description of the drawings

In order to explain the technical solutions in the embodiments of the present invention more clearly, 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 invention. 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 an exploded view of the speaker box of the present invention, the speaker box includes an upper cover and a lower cover;

2 is a schematic diagram of the three-dimensional structure of the upper cover of the speaker box shown in FIG. 1;

Fig. 3 is an enlarged schematic diagram of the upper cover shown in Fig. 2 at part A;

4 is a schematic diagram of the structure of the speaker box shown in FIG. 1 after being assembled;

Figure 5 is a cross-sectional view of the speaker box shown in Figure 4 along the line B-B in Figure 4;

Fig. 6 is an enlarged schematic diagram of the structure along the part C in Fig. 5.

Embodiments of the present invention

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

Please refer to FIGS. 1-6 at the same time, the speaker box 100 provided according to the present invention includes a housing 11 with a receiving space, a sounding monomer 12 received in the receiving space of the housing 11, a breathable partition 13, and a sealing member 14. And sound-absorbing particles 15. The housing 11 includes an upper cover 111 and a lower cover 112. The upper cover 111 and the lower cover 112 are assembled to form the accommodating space. The space is divided into a front cavity and a rear cavity 113 opposite to the front cavity.

The upper cover 111 includes a top wall 1111, a side wall 1112 bent and extended from the edge of the top wall 1111, and a mounting groove 1113 provided on the top wall 1111, and the sounding monomer 12 is mounted in the mounting groove 1113, and opposite to the top wall 1111 and spaced apart. The side wall 1112 abuts and is fixed to the lower cover 112, thereby forming the receiving space. The top wall 1111 is provided with a first through hole 1114, a sealing groove 1115, a second through hole 1116 passing through the sealing groove 1115, and a blocking portion 1117. The sealing groove 1115 is provided on the top wall 1111 away from the rear On one side of the cavity 113, the blocking portion 1117 is provided on the side of the top wall 1111 close to the back cavity 113, and the first through hole 1114 and the second through hole 1116 are both connected to the back cavity 113. Connected. The sound-absorbing particles 15 are filled and contained in the rear cavity 113 through the second through hole 1116, the sound-emitting monomer 12 leaks out of the speaker box 100 through the first through hole 1114, and the The air-permeable spacer 13 is installed in the blocking portion 1117 to separate the sound-absorbing particles 15 from the first through hole 1114 from the blocking portion 1117; the sealing member 14 is installed in the sealing groove 1115, To close the second through hole 1116. The air-permeable spacer 13 is made of air-permeable material, so that the rear cavity 113 can leak to the outside of the speaker box 100 through the first through hole 1114. Optionally, the air-permeable spacer 13 is a damping cloth, Any of non-woven fabric or dust-free mesh, nylon woven mesh or metal mesh.

Wherein, the blocking portion 1117 and the air-permeable spacer 13 are used to block the sound-absorbing particles 15 so as not to block the first through hole 1114. Specifically, the blocking portion 1117 protrudes from the top wall 1111 and extends toward the rear cavity 113, and the blocking portion 1117 and the top wall 1111 form a ventilation hole communicating with the first through hole 1114. In the space 1118, the blocking portion 1117 has an opening 11171, and the air-permeable spacer 13 is installed on the blocking portion 1117 and closes the opening 11171. Since the air-permeable spacer 13 is air-permeable, the opening 11171 connects the air-permeable space 1118 and the rear cavity 113 together in an air-permeable manner, and the rear cavity 113 passes through the opening 11171 and the air-permeable space. 1118 communicates with the first through hole 1114 in an air-permeable manner. The air-permeable space 1118 formed by the blocking portion 1117 and the top wall 1111 not only increases the leakage space of the rear cavity 113, but also prevents the sound-absorbing particles 15 from blocking the first through hole 1114. The rear cavity 113 does not leak smoothly.

In this embodiment, preferably, the blocking portion 1117 is a ring-shaped wall protruding from the top wall 1111, and the blocking portion 1117 is in the shape of a cylinder or a square column, which surrounds the first through hole 1114. The air-permeable space 1118 is formed with the top wall 1111. The opening 11171 is provided at an end of the blocking portion 1117 away from the first through hole 1114. Optionally, the blocking portion 1117 has a cylindrical shape.

In other embodiments, the blocking portion 1117 may be a cover structure protruding from the top wall 1111 and covering the first through hole 1114, and the opening 11171 may be provided in the blocking portion 1117. Side wall.

As shown in Figures 1 and 6, the air-permeable spacer 13 is provided with a third groove 131 which faces the air-permeable space 1118 and is directly opposite to the first through hole 1114. The space in the third groove 131 communicates with the air-permeable space 1118, which increases the volume of the air-permeable space 1118, thereby increasing the leakage space of the rear cavity 113. In addition, the third groove 131 corresponds to the position of the first through hole 1114, so that the air-permeable spacer 13 becomes thinner at the position corresponding to the first through hole 1114, which further increases the air-permeable isolation. Air permeability of piece 13.

The above are only the embodiments of the present invention. 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 invention, but these all belong to the present invention. The scope of protection.

Claims

A speaker box comprising a housing with a housing space, a sounding monomer, sound-absorbing particles, and a breathable partition contained in the housing space of the housing, the sounding monomer partitions the housing space into a front A cavity and a back cavity opposite to the front cavity, the housing includes a top wall opposite to the sound emitting monomer and a first through hole provided on the top wall and communicating with the back cavity, the back cavity passing The first through hole communicates with the outside, and is characterized in that: the top wall is further provided with a blocking portion extending toward the rear cavity, and the blocking portion and the top wall form a connection with the first through hole. An air-permeable space, the barrier portion is provided with an opening communicating with the air-permeable space, and the air-permeable spacer is installed on the barrier portion and closes the opening.
The speaker box according to claim 1, wherein the blocking portion is an annular wall protruding from the top wall.
The speaker box according to claim 2, wherein the opening is provided at an end of the blocking portion away from the first through hole, and is directly opposite to the first through hole.
The speaker box according to claim 3, wherein the blocking portion is cylindrical or square columnar.
The speaker box according to claim 1, wherein the air-permeable spacer is provided with a third groove, and the third groove is in communication with the air-permeable space.
The loudspeaker box according to claim 5, wherein the first through hole and the first groove are arranged directly opposite to each other.
The speaker box according to claim 1, wherein the air-permeable isolation member is any one of a damping cloth, a non-woven cloth or a dust-free mesh cloth, a nylon woven mesh or a metal mesh.
The speaker box according to claim 1, wherein the housing includes an upper cover and a lower cover, the upper cover and the lower cover are assembled to form the containing space, and the top wall is provided on the upper cover. Cover; the top wall is provided with a second through hole communicating with the back cavity, and the sound-absorbing particles are filled in the back cavity through the second through hole.