CN115334382A - Sound box - Google Patents

Abstract

The invention provides a sound box, which comprises a shell, a loudspeaker and an equalizer, wherein an installation cavity is formed in the shell, at least part of the cavity wall of the installation cavity is a concave arc surface, and a sound raising hole for communicating the outside with the installation cavity is formed in the concave arc surface; the loudspeaker is arranged in the mounting cavity, and the loudspeaker cover is arranged on the concave arc surface and encloses with the concave arc surface to form a front cavity of the loudspeaker; the equalizer is arranged between the vibrating diaphragm of the loudspeaker and the concave cambered surface and is arranged at an interval with the vibrating diaphragm, and the equalizer is provided with a through hole which is arranged corresponding to the vibrating diaphragm and is communicated with the sound-raising hole. The technical scheme of this application can improve the tone quality abundance and the analytic degree of audio amplifier, promotes user's tone quality and experiences.

Description

Sound box

Technical Field

The invention relates to the technical field of audio equipment, in particular to a sound box.

Background

Along with the development of intelligent audio amplifier, appear more and more with spherical or hemispherical audio amplifier structure on the market, the audio amplifier of this kind of shape, the space between speaker and the spherical inner wall is great, the audio frequency that leads to the short stable well high frequency channel of wavelength produces the standing wave easily between speaker vibrating diaphragm and spherical inner wall, make the high-frequency sensitivity of well high frequency of speaker attenuate fast, the sound that leads to broadcasting has partly high-frequency disappearance, the tone quality abundance and the analytic degree of audio amplifier are relatively poor, tone quality is poor, influence user experience.

Disclosure of Invention

The invention mainly aims to provide a sound box, aiming at improving the sound quality richness and the analysis degree of the sound box and improving the sound quality experience of a user.

In order to achieve the above object, the present invention provides a sound box, including:

the loudspeaker comprises a shell, a sound absorbing layer and a sound absorbing layer, wherein a mounting cavity is formed in the shell, at least part of the wall of the mounting cavity is a concave arc surface, and a sound raising hole for communicating the outside with the mounting cavity is formed in the concave arc surface;

the loudspeaker is arranged in the mounting cavity, and the loudspeaker cover is arranged on the concave arc surface and surrounds the concave arc surface to form a front cavity of the loudspeaker; and

the equalizer is arranged between the vibrating diaphragm of the loudspeaker and the concave cambered surface and is arranged at an interval with the vibrating diaphragm, and the equalizer is provided with a through hole which is arranged corresponding to the vibrating diaphragm and is communicated with the sound-raising hole.

In an embodiment of the sound box of the present invention, the through hole has a diameter gradually increasing in a direction away from the speaker.

In an embodiment of the sound box of the present invention, the equalizer and the concave arc surface are spaced apart from each other.

In an embodiment of the sound box of the present invention, the diaphragm includes a central portion and an edge portion, the edge portion is disposed around the central portion in a circumferential direction and has an inverted conical structure, and the through hole is disposed toward the central portion.

In an embodiment of the sound box of the present invention, the equalizer has two surfaces disposed opposite to each other and a side surface disposed between the two surfaces, the side surface is disposed circumferentially around the equalizer, and the through hole penetrates through the two surfaces;

part of the equalizer is positioned in a cavity formed by the vibrating diaphragm, the surface of the equalizer, which is back to the concave cambered surface, is arranged at intervals with the central part, and the side surface is arranged at intervals with the edge part.

In an embodiment of the sound box of the present invention, the center portion is a spherical surface protruding to one side of the equalizer.

In an embodiment of the sound box of the present invention, a surface of the equalizer facing the center portion is a concave spherical surface.

In an embodiment of the sound box of the present invention, a surface of the equalizer facing the concave arc surface is a contour arc surface adapted to the concave arc surface.

In an embodiment of the sound box of the present invention, the equalizer includes:

the main body part is arranged at an interval with the wall of the mounting cavity and is provided with the through hole; and

the connecting part is arranged on the edge of the main body part and is connected with the concave cambered surface.

In an embodiment of the sound box of the present invention, the sound box further includes a locking member, the locking member is disposed through the connecting portion and the concave arc surface to fix the equalizer to the housing;

and/or one of a positioning column and a positioning hole is arranged on the surface, facing the concave cambered surface, of the connecting part, the other of the positioning column and the positioning hole is arranged on the concave cambered surface, and the positioning column is inserted into the positioning hole.

According to the technical scheme, the equalizer is arranged in the front cavity of the loudspeaker of the sound box, so that the space size of the front cavity of the loudspeaker is reduced, medium-high frequency sound waves with short wavelength emitted by the loudspeaker are effectively prevented from being reflected in the front cavity to form standing waves to offset loss of the medium-high frequency sound waves, and the front cavity effect of the sound box is well improved; meanwhile, the equalizer and the vibrating diaphragm of the loudspeaker are arranged at intervals, so that the equalizer can be prevented from influencing the vibration and sound production of the vibrating diaphragm, the equalizer is provided with a through hole which is arranged corresponding to the vibrating diaphragm and communicated with the sound raising hole, the sound produced by the loudspeaker can be radiated outwards more intensively through the through hole and the sound raising hole, the playback effect of the loudspeaker in a middle and high frequency range is improved, and the medium and high frequency richness is improved; thereby guarantee the sound analysis reduction degree and the tone quality abundance of audio amplifier for the audio amplifier sound field is wider, and has promoted the definition of tone quality, with this promotion user's sense of hearing experience.

Drawings

In order to more clearly illustrate the embodiments or technical solutions of the present invention, the drawings used in the embodiments or technical solutions of the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a structural diagram of an embodiment of the speaker of the present invention;

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

FIG. 3 is an exploded view of the enclosure of FIG. 1;

FIG. 4 is a structural diagram of another embodiment of the speaker of the present invention;

FIG. 5 is a block diagram of an embodiment of an equalizer in a loudspeaker enclosure of the present invention;

fig. 6 is a cross-sectional view of the equalizer of fig. 5;

FIG. 7 is a diagram of the structure of one embodiment of the speakers in the sound box of the present invention;

FIG. 8 is an exploded view of the enclosure of FIG. 7;

fig. 9 is a structural view of the speaker unit of fig. 8;

fig. 10 is an audio simulation diagram of the sound box of the present invention.

The reference numbers illustrate:

the implementation, functional features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all directional indicators (such as up, down, left, right, front, back \8230;) in the embodiments of the present invention are only used to explain the relative positional relationship between the components, the motion situation, etc. in a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

In view of the problems in the background art, the sound box 100 provided by the present invention can improve the sound quality richness and the analysis and restoration degree of the sound box 100, thereby improving the hearing experience of the user.

The structure of the sound box 100 of the present application will be explained in the following with reference to specific embodiments.

Referring to fig. 1 to 5, in an embodiment of the sound box 100 of the present invention, the sound box 100 includes:

the loudspeaker comprises a shell 10, wherein a mounting cavity 15 is formed in the shell 10, at least part of the wall of the mounting cavity 15 is a concave arc surface, and a sound raising hole 111 for communicating the outside with the mounting cavity 15 is formed in the concave arc surface;

the loudspeaker 20 is arranged in the installation cavity 15, the loudspeaker 20 covers the concave arc surface, and the front cavity 29 of the loudspeaker 20 is formed by enclosing the loudspeaker 20 and the concave arc surface; and

the equalizer 30 is disposed between the diaphragm 231 of the speaker 20 and the concave arc surface, and is spaced from the diaphragm 231, the equalizer 30 is provided with a through hole 311, and the through hole 311 is disposed corresponding to the diaphragm 231 and is communicated with the sound emitting hole 111.

The application provides a audio amplifier 100, including as the casing 10 of installation basis, form in the casing 10 and can hold the installation cavity 15 including speaker 20, mainboard 40 and equalizer 30 etc. and use speaker 20 as the reference system, the partial chamber wall of the installation cavity 15 that speaker 20 covered and establish is the concave cambered surface, and the raise voice hole 111 of intercommunication installation cavity 15 is seted up to the concave cambered surface. The speaker 20 is a full-range speaker 20, and may be a moving-coil speaker 20, and is an electroacoustic transducer applying an electrodynamic principle, the speaker 20 is covered on the concave arc surface to form a front cavity 29 of the speaker 20 by enclosing with the concave arc surface, and when the speaker 20 receives an electrical signal of the main board 40 to make the diaphragm 231 vibrate and generate sound, the sound generated by the diaphragm 231 can be radiated outwards through the sound emission hole 111.

It is understood that the standing wave refers to two waves (not necessarily electric waves) with the same frequency and opposite transmission directions, one of the waves is generally a reflected wave of the other wave, when the distance between two reflecting surfaces is an integral multiple of half of the wavelength, the standing wave is generated to cause rapid attenuation of sound, and the high-frequency sound wave in the sound is shorter and has strong directivity, and the standing wave is more easily generated. In the technical scheme of the application, since the speaker 20 is surrounded with the concave arc surface of the casing 10 to form the front cavity 29 of the speaker 20, there may be a too long distance between the diaphragm 231 of the speaker 20 and the concave arc surface, which causes the medium-high frequency sound wave to generate standing wave after being reflected in the front cavity 29, which causes the medium-high frequency sound wave to offset loss, and further causes the medium-high frequency to be lacked in the sound played back by the speaker 20, and the sound box 100 has sound frequency reproduction degree and sound quality richness.

The present application further sets up equalizer 30 in front cavity 29 of speaker 20, and equalizer 30 separates to establish between vibrating diaphragm 231 and the concave arc surface of speaker 20 to set up with vibrating diaphragm 231 interval of speaker 20, so set up, can utilize equalizer 30 to reduce front cavity 29 space size, reduce the distance between vibrating diaphragm 231 and the plane of reflection, thereby avoid medium and high frequency sound wave to form the standing wave after front cavity 29 reflects, avoid medium and high frequency sound wave to be offset the loss because of front cavity 29 effect in front cavity 29. Meanwhile, the equalizer 30 and the diaphragm 231 of the speaker 20 are arranged at an interval, so that the equalizer 30 can be prevented from influencing the vibration and sound production of the diaphragm 231, the through hole 311 is formed in the equalizer 30, the through hole 311 is arranged corresponding to the diaphragm 231 and is communicated with the sound emitting hole 111, the sound emitted by the speaker 20 can be radiated outwards through the through hole 311 and the sound emitting hole 111 more intensively, the playback effect of the speaker 20 in a middle and high frequency band is improved, the sound analysis and reduction degree and the sound quality richness of the sound box 100 are ensured, and the definition of the sound quality is improved, so that the hearing experience of a user is improved.

In this embodiment, the equalizer 30 may be disposed at an interval with the concave arc surface, or may be attached to the concave arc surface, and a plurality of sound emitting holes 111 may be formed on the concave arc surface; when the equalizer 30 is attached to the concave arc surface, the sound emitting holes 111 are communicated with at least one of the sound emitting holes 111, and a part of the sound emitting holes 111 are located outside the equalizer 30, so that not only the middle and high frequency sounds of the speaker 20 can be intensively radiated outwards through the through hole 311 and the corresponding sound emitting hole 111, but also the low frequency sounds of the speaker 20 can be radiated outwards through the sound emitting holes 111 outside the equalizer 30, thereby ensuring the full frequency characteristics of the sound box 100.

It should be noted that the technical solution provided by the present application may be used to improve the problem of medium-high audio attenuation caused by the oversized front cavity 29 of the speaker 20 due to the structural feature of the concave arc surface, at this time, the problem may be caused only by the cavity wall of the cover portion of the speaker 20 being the concave arc surface, the structures of the cavity walls outside the speaker 20 are not limited, and may all be the concave arc surfaces, and may also be correspondingly arranged according to the structural layout of the internal components, and meanwhile, the external shape of the housing 10 may be a spherical, square, cylindrical, hemispherical or other shape structure, and is not limited herein.

Therefore, it can be understood that, in the technical solution of the present invention, the equalizer 30 is disposed in the front cavity 29 of the speaker 20 of the sound box 100, so as to reduce the space size of the front cavity 29 of the speaker 20, effectively avoid the medium-high frequency sound wave with shorter wavelength emitted by the speaker 20 from reflecting in the front cavity 29 to form a standing wave, which results in medium-high frequency sound wave cancellation loss, and better improve the front cavity 29 effect of the sound box 100; meanwhile, the equalizer 30 and the diaphragm 231 of the speaker 20 are arranged at an interval, so that the equalizer 30 can be prevented from influencing the vibration and sound production of the diaphragm 231, the equalizer 30 is provided with the through hole 311 which is arranged corresponding to the diaphragm 231 and is communicated with the sound emitting hole 111, the sound emitted by the speaker 20 can be radiated outwards through the through hole 311 and the sound emitting hole 111 more intensively, the playback effect of the speaker 20 in a middle and high frequency range is improved, and the richness of the middle and high frequency is improved; thereby guarantee audio analysis restoration degree and the tone quality abundance of audio amplifier 100 for audio amplifier 100 sound field is wider, and has promoted the definition of tone quality, with this promotion user's sense of hearing experience. Fig. 10 is a comparison graph of audio frequencies of the sound box 100 of the present application and a conventional sound box without the equalizer 30, and it can be seen that the sound box without the equalizer 30 has an obvious audio frequency lack in the middle and high frequency bands, and the sound box of the present application is provided with the equalizer 30 to better solve the problem, so that the sound played by the sound box 100 includes various middle and low frequency bands, and the sound analysis and restoration degree and the sound quality richness of the sound box 100 are ensured.

Referring to fig. 2, in some embodiments of the sound box 100 of the present invention, the aperture of the through hole 311 gradually increases in a direction away from the speaker 20.

In this embodiment, the cross-sectional area of the through hole 311 is gradually enlarged in a direction away from the speaker 20, that is, the equalizer 30 is formed to be similar to a horn or horn structure, and at this time, the equalizer 30 can function as a speaker to a certain extent, so as to improve the sound pressure of the speaker 20 and improve the sound definition.

Referring to fig. 2, in some embodiments of the sound box 100 of the present invention, the equalizer 30 is spaced apart from the concave surface.

In this embodiment, the equalizer 30 and the concave arc surface are disposed at an interval, and thus, since the directivity of the low-frequency sound emitted from the speaker 20 is low, the low-frequency sound can be transmitted to the gap between the equalizer 30 and the vibrating diaphragm 231 from the gap between the equalizer 30 and the concave arc surface, and then is radiated outwards from the sound emitting hole 111, and thus, the concentrated effect of the through hole 311 on the sound wave can be prevented from affecting the propagation of the low-frequency sound wave, and the low-frequency effect of the sound box 100 can be ensured.

Referring to fig. 9, in some embodiments of the sound box 100 of the present invention, the diaphragm 231 includes a central portion 2311 and an edge portion 2313, the edge portion 2313 is disposed around the central portion 2311 in a circumferential direction and has an inverted conical structure, and the through hole 311 is disposed toward the central portion 2311.

In this embodiment, the diaphragm 231 of the speaker 20 is in an inverted cone structure, and includes a central portion 2311 and an edge portion 2313, and the central portion 2311 is disposed toward the concave arc surface, and it can be understood that, in the speaker 20, the diaphragm 231 is connected to the voice coil, but the voice coil vibrates up and down when being powered on, and the diaphragm 231 is driven to vibrate so as to push the air to vibrate and sound. In this embodiment, the diaphragm 231 is made to have an inverted cone structure, in which the voice coil is connected to the edge of the central portion 2311, and the central portion 2311 is closer to the voice coil, and due to the separation vibration effect, the central portion 2311 is more biased to emit medium-high frequency sound when vibrating, and the edge portion 2313 is more biased to emit low-frequency sound when vibrating. With such an arrangement, the middle and high frequencies emitted from the central portion 2311 can be radiated outwards more intensively through the through hole 311 and the speaker hole 111, so that the high frequency sound amplitude of the sound box 100 is increased, and the low frequency sound emitted from the edge portion 2313 has low directivity, so that the low frequency sound can be transmitted from the gap between the edge portion 2313 and the equalizer 30 to the gap between the equalizer 30 and the concave arc surface to be radiated outwards through the speaker hole 111, thereby ensuring that the propagation of the low frequency sound of the speaker 20 is not interfered by the equalizer 30, so that the full frequency sound emitted from the speaker 20 can be radiated outwards well, and ensuring the sound analysis and reduction degree and sound quality richness of the sound box 100. It should be noted that, in some embodiments, the central portion 2311 of the diaphragm 231 may be a dust cover, which can prevent impurities such as dust from entering the inside of the speaker 20 while playing a role of vibrating and sounding.

With reference to fig. 2 and fig. 6, in some embodiments of the sound box 100 of the present invention, the equalizer 30 has two surfaces disposed oppositely and a side surface disposed between the two surfaces, the side surface is disposed around the equalizer 30 along a circumferential direction, and the through hole 311 penetrates through the two surfaces;

part of the equalizer 30 is located in the basin formed by the diaphragm 231, the surface of the equalizer 30 facing away from the concave arc surface is spaced from the center portion 2311, and the side surface is spaced from the edge portion 2313.

In the technical solutions of the foregoing embodiments, the diaphragm 231 of the speaker 20 has an inverted cone structure. In this embodiment, the equalizer 30 is partially accommodated in a cavity formed by an inverted cone structure, in this case, the equalizer 30 has two surfaces disposed opposite to each other and respectively disposed toward the center portion 2311 and the concave arc surface of the diaphragm 231, the through hole 311 penetrates through the two surfaces, and the side surface of the equalizer 30 and the edge portion 2313 are disposed at an interval; so set up for equalizer 30 and vibrating diaphragm 231 profile modeling set up, can make equalizer 30 more be close to vibrating diaphragm 231, make full use of concave arc face and the space between vibrating diaphragm 231, reduce the 29 space sizes in front of speaker 20, reduce the distance between vibrating diaphragm 231 and the plane of reflection, further avoid the production of standing wave, reduce the loss of medium-high frequency sound wave, guarantee the sound analysis degree of restoration and the sound quality abundance of audio amplifier 100.

Referring to fig. 2, in some embodiments of the sound box 100 of the present invention, the central portion 2311 is a spherical surface protruding toward one side of the equalizer 30.

In this embodiment, the center 2311 of the diaphragm 231 is a spherical surface to form the dome-shaped diaphragm 231, the high-frequency response characteristic of the dome-shaped diaphragm 231 is good, the directivity is wide, the distortion is small, the amplitude of the high-frequency sound emitted by the speaker 20 can be better improved, the high-frequency directivity is improved, the high-frequency richness and the high-frequency cleaning degree are improved, and the playback effect of the sound box 100 in the high-frequency band is favorably improved.

Referring to fig. 2 and 6, in some embodiments of the sound box 100 of the present invention, a surface of the equalizer 30 facing the central portion 2311 is a concave spherical surface.

In this embodiment, the surface of the equalizer 30 facing the center portion 2311 is a concave spherical surface, which aims to make the equalizer 30 and the diaphragm 231 profiling, shorten the distance between the equalizer 30 and the diaphragm 231, and keep the distance between the equalizer 30 and the diaphragm 231 in the maximum amplitude range of the diaphragm 231 as much as possible, i.e., not affect the vibration of the diaphragm 231, and also reduce the distance between the diaphragm 231 and the reflecting surface as much as possible, so as to alleviate the effect of the front cavity 29, avoid the medium-high frequency sound wave from forming standing waves after being reflected by the front cavity 29, and avoid the medium-high frequency sound wave from being offset and lost in the front cavity 29 due to the effect of the front cavity 29; so that the middle and high frequency acoustic waves emitted from the center portion 2311 can be concentrated to the through hole 311 to be radiated outward.

Referring to fig. 2 and 6, in some embodiments of the sound box 100 of the present invention, a surface of the equalizer 30 facing the concave arc surface is a contour arc surface adapted to the concave arc surface.

In this embodiment, the surface of the equalizer 30 facing the concave arc surface is a profiling arc surface adapted to the concave arc surface, so that the equalizer 30 can occupy the space between the diaphragm 231 and the concave arc surface as much as possible, thereby reducing the size of the space of the front cavity 29 of the speaker 20, further avoiding the generation of standing waves, reducing the loss of medium-high frequency sound waves, and ensuring the sound analysis and restoration degree and the sound quality richness of the sound box 100.

Referring to fig. 5, in some embodiments of the sound box 100 of the present invention, the equalizer 30 includes:

a main body 31, the main body 31 and the wall of the mounting cavity 15 being spaced apart from each other, and the through hole 311 being opened; and

and the connecting part 33 is arranged on the edge of the main body part 31, and the connecting part 33 is connected with the concave cambered surface.

In this embodiment, the equalizer 30 is fixed on the casing 10, so as to prevent vibration energy of the diaphragm 231 of the speaker 20 from being transmitted to the equalizer 30 when vibrating, and improve convenience of assembling and disassembling the sound box 100. Specifically, the equalizer 30 includes a main body 31 and a connecting portion 33, the main body 31 is disposed between the diaphragm 231 and the concave arc surface and is disposed at an interval with the diaphragm 231 and the concave arc surface, the main body 31 is provided with the through hole 311, the connecting portion 33 is disposed at an edge of the main body 31 and is used for being connected with the concave arc surface to fix the main body 31 on the casing 10, and a connection relationship between the connecting portion 33 and the concave arc surface may be, but not limited to, a snap connection, a bolt connection, an adhesive connection, a hot melt connection or an integral molding, which is not limited herein. In some embodiments, in order to facilitate the disassembly and enclosure of the internal structure of the sound box 100, the casing 10 of the sound box 100 is configured as the front casing 11 and the rear casing 13 that are detachably connected, the front casing 11 is provided with the concave arc surface and the sound-emitting hole 111, at this time, the equalizer 30 and the speaker 20 can be separately installed in the front casing 11 and the rear casing 13, and then the whole structure assembly is performed, and the equalizer 30 is completely disassembled and assembled without affecting the speaker 20, thereby improving the convenience of disassembling and assembling the sound box 100.

In some embodiments, the connecting portion 33 is provided in plurality, and the plurality of connecting portions 33 are arranged at intervals along the circumference of the main body portion 31 and are all connected with the concave arc surface, so as to improve the connection stability of the equalizer 30 and the housing 10.

Referring to fig. 2 and 3, in some embodiments of the sound box 100 of the present invention, the sound box 100 further includes a locking member 60, and the locking member 60 is disposed through the connecting portion 33 and the concave arc surface to fix the equalizer 30 to the housing 10.

In this embodiment, the sound box 100 further includes a locking member 60, the locking member 60 can be a bolt or a rivet, the locking member 60 is disposed through the connecting portion 33 of the equalizer 30 and inserted into the concave arc surface, so as to fix the equalizer 30 on the housing 10, wherein the locking member 60 is preferably a bolt, etc., the concave arc surface has a threaded hole, the locking member 60 is disposed through the connecting portion 33 and is connected and fixed with the housing 10 through a threaded connection in the threaded hole, and the mounting and dismounting are simple and convenient.

Referring to fig. 2 and 5, in some embodiments of the sound box 100 of the present invention, one of the positioning column 113 and the positioning hole 331 is disposed on a surface of the connecting portion 33 facing the concave arc surface, the other of the positioning column 113 and the positioning hole 331 is disposed on the concave arc surface, and the positioning column 113 is inserted into the positioning hole 331.

In this embodiment, one of the positioning column 113 and the positioning hole 331 is disposed on a surface of the connecting portion 33 facing the concave arc surface, the other of the positioning column 113 and the positioning hole 331 is disposed on the concave arc surface, and the positioning column 113 is inserted into the positioning hole 331 during assembly, so as to facilitate positioning and fixing of the equalizer 30, prevent the equalizer 30 from contacting with the diaphragm 231 of the speaker 20 to scratch the diaphragm 231 during assembly of the sound box 100, and improve installation convenience and safety.

In some embodiments, the positioning column 113 is protruded from the concave arc surface, the end surface of the positioning column 113 is provided with a locking hole, the connecting portion 33 is a sleeve structure with an open end, the positioning hole 331 is formed in the sleeve, the opening of the sleeve is arranged toward the concave arc surface, the bottom wall of the sleeve is provided with a connecting hole, when the positioning column 113 is inserted into the positioning hole 331 formed in the sleeve, the locking hole and the connecting hole are arranged opposite to each other, so that the locking member 60 penetrates through the connecting hole and the locking hole to lock the equalizer 30 to the inner wall of the casing 10, the installation is convenient, the structural strength is high, and the stability of the whole structure of the sound box 100 is high.

Referring to fig. 7 and 8, in some embodiments of the sound box 100 of the present invention, the speaker 20 includes:

the inner shell 21 is arranged in the mounting cavity 15, a sound cavity 211 is formed in the inner shell 21, and the inner shell 21 is provided with a mounting opening communicated with the sound cavity 211; and

speaker monomer 23, speaker monomer 23 install in the installing port is in order to seal sound cavity 211, speaker monomer 23 covers and establishes the concave arc face, and with the concave arc face encloses to close and forms speaker 20's front chamber 29, speaker monomer 23's basin frame 233 is located in sound cavity 211 and seted up the intercommunication sound cavity 211's pressure release hole 235.

In this embodiment, the speaker 20 includes inner shell 21 and speaker monomer 23, inner shell 21 is fixed in installation cavity 15 and is connected with casing 10 fixed connection, be formed with sound cavity 211 in the inner shell 21, the installing port of intercommunication sound cavity 211 has been seted up to inner shell 21, the installing port is used for installing fixed speaker monomer 23, speaker monomer 23 roughly includes parts such as basin frame 233, vibrating diaphragm 231, the voice coil, magnet, fold ring and shield, roughly moving coil speaker 20, speaker monomer 23 installs on the installing port of inner shell 21, and make speaker monomer 23's basin frame 233 be located in sound cavity 211 and seted up the pressure release hole 235 that communicates sound cavity 211, so set up, alright increase speaker monomer 23's back sound cavity 211 with sound cavity 211 through inner shell 21, improve speaker monomer 23's low frequency, make the low frequency sound effect more mellow, improve the degree of reduction of low frequency sound effect, thereby improve audio amplifier 100's tone quality.

Further, when the sound cavity 211 is completely closed, the speaker 20 forms a structure similar to the closed type sound box 100, and when the main body of the speaker 20 is powered on to vibrate the diaphragm 231 for generating sound, the pressure change in the sound cavity 211 drives the diaphragm 231 to reset rapidly in response to the continuously changing electrical signal, for example, when the diaphragm 231 moves to the side of the sound cavity 211, the pressure of the sound cavity 211 increases, so as to generate a repulsive force to the diaphragm 231, and drive the diaphragm 231 to reset rapidly moving outward, and when the diaphragm 231 moves to the outside of the sound cavity 211, the pressure of the sound cavity 211 decreases, so as to generate a suction force to the diaphragm 231, and drive the diaphragm 231 to reset rapidly moving inward; at this time, the diaphragm 231 may rapidly respond to the subsequent electrical signal to vibrate according to the subsequent electrical signal, improving the transient characteristics of the speaker 20.

Referring to fig. 2, in some embodiments of the sound box 100 of the present invention, the main board 40 of the sound box 100 is located below the inner housing 21, the bottom of the inner housing 21 is provided with a wire connecting member 213 electrically connected to the speaker unit 23, and the wire connecting member 213 is in contact with an output terminal on the main board 40.

In this embodiment, the speaker unit 23 has a connection terminal 237, the connection terminal 237 is located in the sound cavity 211, the bottom of the inner casing 21 is provided with a connection element 213, the connection element 213 is disposed on the bottom wall of the inner casing 21, and the connection terminal 237 is electrically connected to one end of the connection element 213 located in the sound cavity 211; when the sound box 100 is in a normal position, the main board 40 is located below the speaker 20, and an output end is provided on a side surface of the main board 40 facing the speaker 20, and at this time, one end of the wiring member 213 located outside the inner casing 21 abuts against the output end to form an electrical connection; so configured, the assembly of the sound box 100 is facilitated, and no other wires are required to connect the speaker 20 and the main board 40.

In some embodiments, the output terminals on the main board 40 are elastic terminals, and when the speaker 20 is pressed down, the output terminals are elastically deformed, so that the output terminals have an elastic force opposite to the pressure applied to the output terminals, thereby ensuring that the output terminals and the wire connecting members 213 are stably electrically connected.

In some embodiments, the casing 10 of the sound box 100 is provided with a key 19, and the key 19 is electrically connected to the main board 40 of the sound box 100, at this time, a user can input a control instruction by operating the key 19, so as to control the sound box 100 to perform a corresponding action according to the instruction, including adjusting a volume or switching audio.

Referring to fig. 7 to 9, in some embodiments of the sound box 100 of the present invention, the frame 233 includes a frame body 2331 and a surrounding edge 2333, the frame body 2331 is inserted into the mounting opening, the frame body 2331 is provided with a cavity having an opening facing the outside of the mounting opening and a pressure relief hole 235 communicating the cavity with the sound cavity 211, and the diaphragm 231 covers the opening of the cavity; the surrounding edge 2333 is disposed around the frame body 2331, is disposed on an outer wall of the inner casing 21, is disposed around the mounting opening, and is connected to the inner casing 21.

In this embodiment, the frame 233 of the speaker unit 23 includes a frame body 2331 and a surrounding edge 2333, the frame body 2331 is inserted into the mounting opening, the frame body 2331 is provided with a receiving chamber with an opening facing the outside of the mounting opening, and is provided with a pressure relief hole 235 to communicate the receiving chamber with the sound chamber 211 of the inner housing 21, and the diaphragm 231 is provided in the receiving chamber; the surrounding edge 2333 is arranged around the opening of the containing cavity and erected outside the mounting opening to be fixedly connected with the inner shell 21, so that the connection stability of the basin stand 233 and the inner shell 21 is improved.

Referring to fig. 7 and 8, in some embodiments of the sound box 100 of the present invention, the speaker 20 further includes a connector 27, and the connector 27 is sequentially inserted through the surrounding edge 2333 and the inner housing 21 to connect the speaker unit 23 and the inner housing 21.

Referring to fig. 7 and 8, in some embodiments of the sound box 100 of the present invention, the outer wall of the inner casing 21 is provided with a mounting groove 215, the bottom wall of the mounting groove 215 is provided with the mounting opening, and the surrounding edge 2333 is located in the mounting groove 215.

In this embodiment, the outer wall of the inner casing 21 is provided with the mounting groove 215, the mounting opening is provided at the bottom of the mounting groove 215, and at this time, the surrounding edge 2333 is limited in the mounting groove 215, so that the connection stability between the speaker unit 23 and the inner casing 21 is improved, and the stability of the whole structure is improved. In some embodiments, vibration isolation pads 25 are disposed in the enclosure 100, and in this case, the vibration isolation pads 25 may be disposed around the notches of the mounting slots 215 to ensure the sealing performance of the front cavity 29 of the speaker 20.

Referring to fig. 7 to 9, in some embodiments of the sound box 100 of the present invention, an outer wall of the inner housing 21 facing the peripheral edge 2333 is provided with one of a limiting post 217 and a limiting hole 2335, a surface of the peripheral edge 2333 facing the inner housing 21 is provided with the other of the limiting post 217 and the limiting hole 2335, and the limiting post 217 is inserted into the limiting hole 2335.

In this embodiment, a limiting structure is arranged between the speaker unit 23 and the inner shell 21, so as to improve the stability and installation convenience of the overall structure. Specifically, one of the limiting column 217 and the limiting hole 2335 is disposed on the outer wall of the inner casing 21 facing the peripheral edge 2333, the other of the limiting column 217 and the limiting hole 2335 is disposed on the surface of the peripheral edge 2333 facing the inner casing 21, the limiting column 217 is inserted into the limiting hole 2335 to facilitate limiting installation of the speaker unit 23 and the inner casing 21, and the peripheral edge 2333 and the installation hole on the inner casing 21 can be aligned to each other to facilitate installation and connection of the connecting member 27.

Referring to fig. 2 and 7, in some embodiments of the sound box 100 of the present invention, a vibration isolation pad 25 is disposed between the speaker 20 and the wall of the mounting cavity 15, and the vibration isolation pad 25 is disposed around the front cavity 29.

In the solution of the foregoing embodiment, the speaker 20 is covered on the concave arc surface of the installation cavity 15 to enclose the front cavity 29 of the speaker 20. In this embodiment, the shock-insulation pad 25 circumferentially surrounding the front cavity 29 is disposed between the speaker 20 and the cavity wall of the installation cavity 15, and the shock-insulation pad 25 can play a role of buffering vibration, so as to prevent the speaker 20 from causing the damage risk of the sound quality of the sound box 100 increasing the internal devices due to the fact that vibration energy is transmitted to the casing 10 to cause the casing 10 to resonate to generate noise when the speaker 20 is powered on to make the diaphragm 231 vibrate and generate sound. The vibration isolation pad 25 may be made of elastic material such as sponge or rubber, so as to effectively absorb vibration and reduce the propagation of vibration energy.

Furthermore, the vibration isolation pad 25 can also play a role in sealing, so as to ensure that the front cavity 29 of the speaker 20 is sealed, thereby preventing sound emitted by the speaker 20 from being transmitted to the inside of the enclosure 10 of the sound box 100, which results in sound resonance affecting the sound output effect.

Referring to fig. 1, in some embodiments of the sound box 100 of the present invention, a battery is further disposed in the accommodating cavity, and the speaker 20 is electrically connected to a battery assembly, where the battery assembly mainly functions as a power source, so as to realize a mobile and portable function of the sound box 100. Further, casing 10 still is provided with the interface 17 that charges, and the interface 17 that charges runs through casing 10 and sets up to with battery pack electric connection, when battery pack's electric quantity exhausts, can charge battery pack through the interface 17 connection power that charges like this, can guarantee audio amplifier 100's life, need not to change the battery repeatedly.

Referring to fig. 1 to fig. 3, in some embodiments of the sound box 100 of the present invention, the sound box 100 further includes a mesh 50, and the mesh 50 is covered on an outer side wall of the housing 10.

In this embodiment, the mesh cloth 50 is wrapped on the outer wall of the casing 10 of the sound box 100, and the mesh cloth 50 can block dust in the space, so that the dust cannot enter the sound box 100, thereby preventing the aging of the components inside the sound box 100 and ensuring the service life of the sound box 100; meanwhile, a plurality of compact small holes are formed in the mesh 50, so that the sound output and heat dissipation of the sound box 100 are prevented from being influenced by the arrangement of the mesh 50.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings, or any other related technical fields, which are directly or indirectly applied to the present invention, are included in the scope of the present invention.

Claims (10)

1. An acoustic enclosure, comprising:

the loudspeaker comprises a shell, a sound absorbing layer and a sound absorbing layer, wherein a mounting cavity is formed in the shell, at least part of the wall of the mounting cavity is a concave arc surface, and a sound raising hole for communicating the outside with the mounting cavity is formed in the concave arc surface;

the loudspeaker is arranged in the mounting cavity, and the loudspeaker cover is arranged on the concave arc surface and surrounds the concave arc surface to form a front cavity of the loudspeaker; and

the equalizer is arranged between the vibrating diaphragm of the loudspeaker and the concave cambered surface and is arranged at an interval with the vibrating diaphragm, and the equalizer is provided with a through hole which is arranged corresponding to the vibrating diaphragm and is communicated with the sound-raising hole.

2. An acoustic enclosure according to claim 1, wherein the aperture of the through-hole increases progressively in a direction away from the loudspeaker.

3. The acoustic enclosure of claim 2, wherein the equalizer is spaced from the concave curved surface.

4. The loudspeaker of claim 3, wherein the diaphragm includes a central portion and an edge portion, the edge portion is disposed circumferentially around the central portion and has an inverted cone-shaped structure, and the through hole is disposed toward the central portion.

5. The sound box according to claim 4, wherein the equalizer has two surfaces disposed opposite to each other and a side surface disposed between the two surfaces, the side surface being circumferentially disposed along the equalizer, the through hole penetrating the two surfaces;

part of the equalizer is positioned in a cavity formed by the vibrating diaphragm, the surface of the equalizer, which is back to the concave cambered surface, is arranged at intervals with the central part, and the side surface is arranged at intervals with the edge part.

6. The acoustic enclosure of claim 5, wherein the central portion is a spherical surface that is convex toward one side of the equalizer.

7. An acoustic enclosure according to claim 6, wherein the surface of the equalizer facing the central portion is a concave spherical surface.

8. The sound box according to claim 5, wherein the surface of the equalizer facing the concave arc surface is a contour arc surface adapted to the concave arc surface.

9. An acoustic enclosure as claimed in any one of claims 1 to 8, characterised in that the equalizer comprises:

the main body part is arranged at intervals with the wall of the mounting cavity and is provided with the through hole; and

the connecting part is arranged on the edge of the main body part and is connected with the concave cambered surface.

10. The sound box according to claim 9, further comprising a locking member, wherein the locking member is inserted into the connecting portion and the concave arc surface to fix the equalizer to the housing;

and/or one of a positioning column and a positioning hole is arranged on the surface, facing the concave cambered surface, of the connecting part, the other of the positioning column and the positioning hole is arranged on the concave cambered surface, and the positioning column is inserted into the positioning hole.

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