CN209982706U

CN209982706U - Sound box

Info

Publication number: CN209982706U
Application number: CN201921298373.6U
Authority: CN
Inventors: 唐文亮; 黄华军; 张正虎; 余凡; 黄敏双; 陈冬平; 李天�; 袁为揆; 肖兴武; 曾中伟; 张镇军; 朱法景; 袁雄; 王海波; 庄志红; 谢江; 彭明涛; 潘久练; 王仕鑫; 丁辉
Original assignee: Ganzhou De Hui Da Technology Co Ltd
Current assignee: Ganzhou De Hui Da Technology Co Ltd
Priority date: 2019-08-12
Filing date: 2019-08-12
Publication date: 2020-01-21
Anticipated expiration: 2029-08-12

Abstract

The utility model discloses a sound box, which comprises a shell with a cavity, two loudspeakers and an elastic body, wherein the two loudspeakers are arranged in the cavity of the shell; the shell is provided with two sound outlet holes which are oppositely arranged and are communicated with the cavity; the front faces of the two loudspeakers face the two sound outlet holes respectively, the back faces of the two loudspeakers face to each other, the elastic body is clamped between the back faces of the two loudspeakers, and the front faces of the two loudspeakers can abut against the inner wall face of the cavity tightly. The utility model arranges the elastic body between the back surfaces of the two loudspeakers, on one hand, the elastic body can play a role of buffering and reduce resonance; on the other hand, the elastomer presss from both sides and establishes between the back of two loudspeaker and makes the front of two loudspeakers support the internal wall face of tight cavity for two loudspeakers form a whole with the cavity, make two loudspeakers can give a holding power as the strengthening rib simultaneously, thereby alleviate the vibrational force of the resonance source in the cavity of even having eliminated, solve the resonant problem of cavity effectively.

Description

Sound box

Technical Field

The utility model relates to an audio playback technical field especially relates to a sound box.

Background

Along with the development of electronic technology, all kinds of electronic products more and more tend to miniaturize, portablely, and the audio amplifier is as people's leisure and recreation's daily necessities, and the tone quality requirement is more and more high, therefore prior art still increases passive basin in order to aggravate the bass effect when still miniaturizing the audio amplifier. However, the miniaturization of the sound box and the addition of the passive basin bring with it the problem that the cavity resonance affects the sound quality.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a can solve audio amplifier of cavity resonance problem.

To achieve the purpose, the utility model adopts the following technical proposal:

a sound box comprises a shell with a cavity, two loudspeakers and an elastic body, wherein the two loudspeakers are arranged in the cavity of the shell; the shell is provided with two sound outlet holes which are oppositely arranged, and the two sound outlet holes are communicated with the cavity; the front faces of the two loudspeakers face the two sound outlet holes respectively, the back faces of the two loudspeakers face to each other, the elastic body is clamped between the back faces of the two loudspeakers, and the front faces of the two loudspeakers can be tightly abutted against the inner wall face of the cavity.

In some of these embodiments, the elastomer is bonded to the back of both of the horns.

In some of these embodiments, the elastomer is one or more of silicone, foam, sponge, and EVA.

In some embodiments, the front surface of the horn is provided with a connecting part, the periphery of the sound outlet hole is provided with a connecting sheet, and the connecting part is fixedly connected with the connecting sheet. In some embodiments, the connecting portion and the connecting piece are respectively provided with corresponding threaded holes, and the connecting piece and the connecting portion are fixedly connected through screws in threaded fit with the threaded holes.

In some embodiments, the connecting portion is provided with at least one positioning column, and the connecting sheet is provided with a positioning hole corresponding to the positioning column and through which the positioning column passes.

In some embodiments, the number of the positioning columns and the number of the positioning holes are two, the two positioning columns are arranged on the horn in a diagonal manner, and the two positioning holes correspond to the two positioning columns one to one.

In some embodiments, the sound box further includes a passive basin, a mounting hole is formed in the housing corresponding to the passive basin, and the passive basin is mounted in the mounting hole.

In some of these embodiments, the housing has a first sidewall, a second sidewall, a third sidewall, and a fourth sidewall, the fourth sidewall being disposed opposite the third sidewall, the first sidewall being disposed opposite the second sidewall; the two sound outlet holes are respectively formed in the first side wall and the second side wall, and the mounting hole is formed in the third side wall.

In some embodiments, the housing includes an upper shell and a lower shell which are detachably connected, the two speakers are disposed in the upper shell, and a circuit board is disposed in the lower shell and electrically connected to the speakers.

The utility model discloses the audio amplifier has following beneficial effect at least: by arranging the elastic body between the back surfaces of the two loudspeakers, on one hand, the elastic body can play a role in buffering and reduce resonance; on the other hand, the elastomer presss from both sides and establishes between the back of two loudspeaker and makes the front of two loudspeakers support the internal wall face of tight cavity for two loudspeakers form a whole with the cavity, make two loudspeakers can give a holding power as the strengthening rib simultaneously, thereby alleviate the vibrational force of the resonance source in the cavity of even having eliminated, solve the resonant problem of cavity effectively.

Drawings

Fig. 1 is a schematic structural view of a sound box provided in an embodiment of the present invention;

FIG. 2 is a longitudinal cross-sectional view of the enclosure shown in FIG. 1;

the reference numbers illustrate:

the loudspeaker comprises a shell 100, an upper shell 110, a lower shell 120, a loudspeaker 200, a positioning column 210, an elastic body 300, a passive basin 400 and a screw 500.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It should be noted that when a portion is referred to as being "secured to" another portion, it can be directly on the other portion or there can be an intervening portion. When a portion is said to be "connected" to another portion, it may be directly connected to the other portion or intervening portions may be present.

As shown in fig. 1 and 2, the sound box of an embodiment includes a housing 100 having a cavity, two speakers 200, and an elastic body 300, the two speakers 200 being disposed in the cavity of the housing 100; the casing 100 is provided with two sound outlet holes which are oppositely arranged and are communicated with the cavity; the front surfaces of the two speakers 200 face the two sound outlet holes respectively, the back surfaces of the two speakers 200 face each other, and the elastic body 300 is clamped between the back surfaces of the two speakers 200 and can enable the front surfaces of the two speakers 200 to abut against the inner wall surface of the cavity.

In the sound box with the structure, the elastic body 300 is arranged between the back surfaces of the two loudspeakers 200, so that on one hand, the elastic body 300 can play a role in buffering and reduce resonance; on the other hand, the elastic body 300 is clamped between the back surfaces of the two speakers 200 and the front surfaces of the two speakers 200 are abutted against the inner wall surface of the cavity, so that the two speakers 200 and the cavity form a whole, and the two speakers 200 can be used as reinforcing ribs to provide a supporting force, thereby reducing or even eliminating the vibration force of the resonance source in the cavity and effectively solving the problem of cavity resonance.

Specifically, the two speakers 200 have their front faces facing the two sound outlet holes respectively: the front of one of the speakers 200 faces one of the sound outlet holes, and the front of the other speaker 200 faces the other sound outlet hole.

The front of the loudspeaker 200 is provided with a connecting part, the periphery of the sound outlet hole is provided with a connecting sheet, and the connecting part is tightly connected with the connecting sheet. Optionally, connecting portion and connection piece can be through spiro union mode fastening connection, and the mode structure of spiro union is more stable, enables loudspeaker 200 inseparabler, supports tightly at the cavity inner wall firmly, helps reducing the cavity resonance. Specifically, when the connecting portion and the connecting piece are fastened and connected in a screwing manner, corresponding threaded holes may be respectively formed in the connecting portion and the connecting piece, and the connecting piece and the connecting portion are fixedly connected by a screw 500 in threaded fit with the threaded hole.

Furthermore, the connecting portion is provided with at least one positioning column 210, and the connecting sheet is provided with a positioning hole corresponding to the positioning column 210 and allowing the positioning column 210 to pass through. The positioning hole and the positioning column 210 have the advantages that: when the speaker 200 needs to be installed in the cavity of the housing 100, the positioning post 210 can be correspondingly inserted through the positioning hole to realize initial positioning, so that the speaker 200 and the housing 100 can be conveniently connected and fixed by using screws in the following process.

As shown in fig. 1, the number of the positioning columns 210 and the number of the positioning holes are two, two positioning columns 210 are diagonally arranged on the horn 200, the two positioning holes correspond to the two positioning columns 210 one to one, and the two positioning columns 210 diagonally arranged can further improve the positioning accuracy.

As shown in fig. 1 and 2, the sound box further includes a passive basin 400, and the housing 100 is provided with a mounting hole corresponding to the passive basin 400, and the passive basin 400 is mounted in the mounting hole. The bass effect can be increased by designing the passive basin 400, so that the tone quality of the sound box is better.

Specifically, the case 100 has a first sidewall, a second sidewall, a third sidewall, and a fourth sidewall, the fourth sidewall being disposed opposite to the third sidewall, the first sidewall being disposed opposite to the second sidewall; the two sound outlet holes are respectively formed in the first side wall and the second side wall, and the mounting hole is formed in the third side wall.

As shown in fig. 1, the housing 100 includes an upper case 110 and a lower case 120 detachably coupled to facilitate disassembly; the two speakers 200 and the passive tub 400 are both disposed in the upper case 110, and a circuit board is disposed in the lower case 120 and electrically connected to the speakers 200. Alternatively, the upper case 110 and the lower case 120 may be coupled by screws or snap-fit coupling.

Alternatively, the elastomer 300 is bonded to the back of the two speakers 200, such as by using a back adhesive or other adhesive to bond the elastomer 300 to the back of the two speakers 200.

Optionally, elastomer 300 is one or more of silicone, foam, sponge, and EVA (ethylene vinyl acetate). That is, the elastic body 300 may be silica gel, foam, sponge, or EVA, and may be formed by a combination of two or more thereof. Of course, the elastic body 300 may be other objects having certain elasticity, being able to rebound and providing a supporting force.

In summary, the sound box has at least the following advantages: by arranging the elastic body 300 between the back surfaces of the two horns 200, on one hand, the elastic body 300 can play a role in buffering and reduce resonance; on the other hand, the elastic body 300 props against the two loudspeakers 200 from the back surfaces of the two loudspeakers 200, so that the two loudspeakers 200 and the cavity form a whole, the two loudspeakers 200 can serve as reinforcing ribs to provide supporting force for the cavity, the vibration force of a resonance source in the cavity is reduced or even eliminated, the problem that the resonance of the cavity of the small-box high-power sound box affects the sound quality is effectively solved, the resonance problem is more directly and effectively solved compared with the situation that buffer parts are additionally attached to other positions, the operation is convenient, and the production efficiency is high.

It is to be noted that, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. An acoustic enclosure comprising a housing (100) having a cavity, two speakers (200) and an elastomer (300), the two speakers (200) being disposed within the cavity of the housing (100); two sound outlet holes which are oppositely arranged are formed in the shell (100), the sound outlet holes are communicated with the cavity, the front faces of the two loudspeakers (200) face the two sound outlet holes respectively, the back faces of the two loudspeakers (200) face to each other, the elastic body (300) is clamped between the back faces of the two loudspeakers (200), and the front faces of the two loudspeakers (200) can be tightly abutted to the inner wall face of the cavity.

2. An acoustic enclosure according to claim 1, characterised in that the elastomer (300) is bonded to the back of both horns (200).

3. An acoustic enclosure according to claim 1 or 2, wherein the elastomer (300) is one or more of silicone, foam, sponge and EVA.

4. An acoustic enclosure according to claim 1, wherein the front face of the speaker (200) is provided with a connecting portion, and the periphery of the sound outlet is provided with a connecting piece, and the connecting portion is fastened to the connecting piece.

5. A sound box according to claim 4, wherein the connecting part and the connecting piece are respectively provided with corresponding threaded holes, and the connecting piece and the connecting part are fixedly connected through screws (500) in threaded fit with the threaded holes.

6. A sound box according to claim 4 or 5, wherein the connecting portion is provided with at least one positioning post (210), and the connecting portion is provided with a positioning hole corresponding to the positioning post (210) for the positioning post (210) to pass through.

7. The sound box according to claim 6, wherein the number of the positioning posts (210) and the number of the positioning holes are two, two positioning posts (210) are diagonally arranged on the horn (200), and the two positioning holes correspond to the two positioning posts (210) one to one.

8. An acoustic enclosure according to claim 1, further comprising a passive basin (400), wherein the enclosure (100) is provided with mounting holes corresponding to the passive basin (400), and the passive basin (400) is mounted in the mounting holes.

9. An acoustic enclosure according to claim 8, wherein the enclosure (100) has a first side wall, a second side wall, a third side wall and a fourth side wall, the fourth side wall being disposed opposite the third side wall, the first side wall being disposed opposite the second side wall; the two sound outlet holes are respectively formed in the first side wall and the second side wall, and the mounting hole is formed in the third side wall.

10. An acoustic enclosure according to claim 8 or 9, wherein the housing (100) comprises an upper shell (110) and a lower shell (120) which are detachably connected, two loudspeakers (200) are arranged in the upper shell (110), and a circuit board is arranged in the lower shell (120), and the circuit board is electrically connected with the loudspeakers (200).