CN113993019A

CN113993019A - Sound box

Info

Publication number: CN113993019A
Application number: CN202111345356.5A
Authority: CN
Inventors: 李震; 刘扬
Original assignee: Goertek Techology Co Ltd
Current assignee: Goertek Techology Co Ltd
Priority date: 2021-11-12
Filing date: 2021-11-12
Publication date: 2022-01-28

Abstract

The invention provides a sound box, which comprises a shell, a loudspeaker, a moving part and a microphone, wherein an accommodating cavity is formed in the shell, and the shell is provided with a sound outlet and a sound pickup hole which are communicated with the accommodating cavity and the outside; the loudspeaker is accommodated in the accommodating cavity and plugs the sound outlet; the moving piece is transversely separated from the accommodating cavity to divide the accommodating cavity into a rear cavity and a buffer cavity, the loudspeaker is communicated with the rear cavity through the pressure relief hole, the sound pickup hole is communicated with the buffer cavity, and the moving piece can reciprocate in the accommodating cavity to change the volume of the rear cavity; the microphone is arranged in the buffer cavity and seals the sound pickup hole. The technical scheme of this application has promoted the pickup effect of microphone in the audio amplifier.

Description

Sound box

Technical Field

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

Background

In the existing closed type sound box, the speaker is disposed at the sound outlet of the housing to radiate sound outward, and the space inside the housing forms the rear cavity of the speaker. Along with the development of science and technology, set up the microphone in order to improve the intelligent degree of audio amplifier in the audio amplifier more, and in closed audio amplifier, microphone and speaker can only be located the back chamber simultaneously, just can cause the influence to the pickup effect of microphone in the closed audio amplifier when the speaker sound production.

Disclosure of Invention

The invention mainly aims to provide a sound box, aiming at improving the sound pickup effect of a microphone in the sound box.

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

the sound pick-up device comprises a shell, a sound outlet and a sound pick-up hole, wherein an accommodating cavity is formed in the shell, and the shell is provided with the sound outlet and the sound pick-up hole which are communicated with the accommodating cavity and the outside;

the loudspeaker is accommodated in the accommodating cavity and used for plugging the sound outlet;

the movable piece is transversely separated from the accommodating cavity to divide the accommodating cavity into a rear cavity and a buffer cavity, the loudspeaker is communicated with the rear cavity through a pressure relief hole, the sound pickup hole is communicated with the buffer cavity, and the movable piece can reciprocate in the accommodating cavity to change the volume of the rear cavity; and

the microphone is arranged in the buffer cavity and blocks the sound pickup hole.

In an embodiment of the sound box of the present invention, the circuit board of the sound box is disposed in the buffer cavity, the sound pickup hole penetrates through the cavity wall of the buffer cavity and the circuit board, and the microphone is disposed on a side of the circuit board away from the cavity wall of the buffer cavity and blocks the sound pickup hole.

In an embodiment of the sound box, the sound box further includes a spacer, the spacer is clamped between the circuit board and the cavity wall of the buffer cavity, so that the circuit board and the cavity wall of the buffer cavity are arranged at an interval, and the sound pickup hole penetrates through the cavity wall of the buffer cavity, the spacer and the circuit board.

In an embodiment of the sound box of the present invention, the plurality of microphones are arranged along a circumferential direction of the sound box at intervals.

In an embodiment of the sound box of the present invention, a peripheral edge of an outer surface of the bottom wall of the buffer cavity is recessed toward one side of the buffer cavity to form a sink, and the sound pickup hole is opened in the sink.

In an embodiment of the sound box of the present invention, the sound pickup hole is opened in a side wall of the buffer cavity.

In an embodiment of the sound box of the present invention, the sound box further includes a dustproof foam, and the dustproof foam covers the sound pickup hole.

In an embodiment of the sound box of the present invention, the dustproof foam is disposed in the buffer chamber.

In an embodiment of the sound box of the present invention, the sound box further includes an adjusting mechanism, and the adjusting mechanism is disposed in the accommodating cavity and configured to elastically support the movable member.

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

the first magnetic piece and the first magnetic piece are arranged on the movable piece; and

the second magnetic part is arranged in the buffer cavity and is arranged at an interval with the bottom wall, the second magnetic part is arranged opposite to the first magnetic part, and the magnetic poles of the second magnetic part and the magnetic poles of the first magnetic part which are arranged opposite to each other are the same.

In an embodiment of the sound box of the present invention, the movable member is a rigid member, and is slidably disposed in the accommodating chamber to vibrate back and forth under the driving of the speaker diaphragm.

According to the technical scheme, the movable piece is arranged in the shell of the sound box to divide the containing cavity in the shell into the rear cavity and the buffer cavity, so that the pressure relief hole of the loudspeaker is communicated with the rear cavity, and the microphone is arranged in the buffer cavity to pick up external sound through the sound pick-up hole. So set up, through the moving part with microphone and speaker mutual isolation, reduce the influence of speaker sound wave to the microphone, improve the pickup effect of microphone.

Simultaneously, the microphone will communicate cushion chamber and the shutoff of external pickup hole for back chamber and cushion chamber all are confined cavity, and the moving part can move about in the holding chamber simultaneously. So set up, when the speaker circular telegram, the vibrating diaphragm vibration makes a sound, because the speaker passes through pressure release hole and back chamber intercommunication, the pressure of back intracavity just can produce the change when the vibrating diaphragm vibrates in order to order about the corresponding activity of moving part, in order to slow down the pressure change of back intracavity, thereby reduce the loss of the mechanical energy that the vibrating diaphragm obtained in the opposition back chamber pressure change in-process, make more mechanical energy be used for ordering about vibrating diaphragm vibration sound production, avoid back chamber pressure to change too big vibrating diaphragm amplitude that leads to and reduce, the electroacoustic conversion efficiency and the sensitivity of improvement audio amplifier. Namely, the pressure change in the back cavity is transferred into the buffer cavity, so that the pressure in the back cavity is kept stable, the phenomenon that the vibration diaphragm moves is obstructed due to the pressure change of the back cavity is avoided, and the electro-acoustic conversion efficiency and the sensitivity of the sound box are improved.

Furthermore, when the moving part moves towards one side of the rear cavity, the pressure in the buffer cavity is reduced to generate a suction force for blocking the moving part to move towards the rear cavity, and when the moving part moves to the maximum amplitude along with the vibrating diaphragm, the suction force applied to the moving part by the buffer cavity is the maximum, so that the moving part is rapidly reset and the vibrating diaphragm is driven to rapidly reset, and the vibrating diaphragm timely responds to the change of a subsequent electric signal to vibrate and sound; when the moving part moves to cushion chamber one side, thereby the increase of cushion intracavity pressure produces the repulsion that hinders the moving part to the motion of cushion chamber one side, and when the moving part moved to the maximum amplitude along with the vibrating diaphragm, the effort that the cushion chamber applyed to the moving part was the biggest for the moving part resets rapidly and orders about the vibrating diaphragm and resets fast under cushion chamber repulsion effect, so that the vibrating diaphragm in time responds follow-up signal of telecommunication change vibration sound production, thereby makes the audio amplifier have better transient characteristic.

That is, this application is through the mode that sets up the moving part in the casing, keeps apart microphone and speaker, improves the pickup effect of microphone, has improved the electroacoustic conversion efficiency and the sensitivity of audio amplifier simultaneously, and makes the audio amplifier have better transient characteristic.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or 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 block diagram of the sound box of FIG. 1 from another angle;

FIG. 3 is a cross-sectional view of the enclosure of FIG. 1;

FIG. 4 is an enlarged view taken at A in FIG. 3;

FIG. 5 is an exploded view of the enclosure of FIG. 1;

fig. 6 is a structural view of the lower case of fig. 5.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Sound box	20	Loudspeaker
10	Shell body	21	Vibrating diaphragm
				11	Upper casing	22	Pressure relief hole
111	Sound outlet	23	Conducting wire
				12	Lower casing	30	Movable part
13	Containing cavity	31	Guide hole
				131	Rear cavity	40	Microphone (CN)
132	Buffer cavity	50	Circuit board
				14	Sound pickup hole	60	Shock insulator
15	Guide post	70	Dustproof foam
				16	Limiting column	80	Adjusting mechanism
17	Limiting step	81	First magnetic part
				18	Sinking platform	82	Second magnetic part

The implementation, functional features and advantages of the objects of the present invention will be further explained 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 the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), 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 connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

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 technical problems reflected in the background art, the present invention provides a sound box 100 to improve the sound pickup effect of the microphone 40 in the sound box 100.

The following description will be made of a specific structure of the sound box 100 according to the present invention in a specific embodiment:

as shown in fig. 1 to 3, in some embodiments of the acoustic enclosure 100 of the present invention, the acoustic enclosure 100 includes:

the sound-collecting device comprises a shell 10, wherein an accommodating cavity 13 is formed in the shell 10, and the shell 10 is provided with a sound outlet 111 and a sound-collecting hole 14 which are communicated with the accommodating cavity 13 and the outside;

the loudspeaker 20 is accommodated in the accommodating cavity 13, and the sound outlet 111 is sealed and blocked by the loudspeaker 20;

the movable piece 30 is transversely separated from the accommodating cavity 13 to divide the accommodating cavity 13 into a rear cavity 131 and a buffer cavity 132, the loudspeaker 20 is communicated with the rear cavity 131 through a pressure relief hole 22, the sound pickup hole 14 is communicated with the buffer cavity 132, and the movable piece 30 can vibrate back and forth under the driving of a vibrating diaphragm 21 of the loudspeaker 20 to change the volumes of the rear cavity 131 and the buffer cavity 132; and

the microphone 40 is arranged in the buffer cavity 132, and the microphone 40 seals the sound pickup hole 14.

The present application provides a sound box 100, a multi-finger enclosed sound box 100. In a conventional closed type sound box, a casing 10 is provided as an installation base, a receiving cavity 13 is formed in the casing 10 and used for installing a speaker 20 and a microphone 40, in a conventional state, the receiving cavity 13 of the casing 10 is communicated with a pressure relief hole 22 of the speaker 20 to form a rear cavity 131 of the speaker 20, and with a sound radiation direction of the speaker 20 as a front side, since the casing 10 is closed and the microphone 40 and the speaker 20 are simultaneously located in the rear cavity 131, sound waves radiated backwards when a diaphragm 21 of the speaker 20 vibrates can affect a sound pickup effect of the microphone 40.

Meanwhile, when the diaphragm 21 moves backwards, the instantaneous volume of the back cavity 131 is reduced to increase the pressure in the back cavity 131 and generate a forward driving force for the diaphragm 21, so that the diaphragm 21 is driven to move forwards and reset quickly; when the diaphragm 21 moves forward, the instantaneous volume increase of the back cavity 131 causes the pressure in the back cavity 131 to decrease and generate a backward suction force to the diaphragm 21, so as to drive the diaphragm 21 to move backward and reset quickly, so that the diaphragm 21 has a better transient characteristic, and the characteristics of the sound effect are that when playing music with fast change or rich content, the diaphragm 21 can reset quickly to respond to the changed electric signal quickly, and the delay is low.

However, in the existing closed-type sound box, the pressure change of the back cavity 131 may also cause the motion amplitude of the diaphragm 21 when sensing the motion of the electrical signal to decrease, for example, during the process that the diaphragm 21 senses the motion of the electrical signal to move forward, the pressure of the back cavity 131 gradually decreases and generates a suction force that hinders the forward motion of the diaphragm 21, and at this time, the electrical signal drives a part of the mechanical energy of the forward motion of the diaphragm 21 to resist the suction force of the back cavity 131, resulting in the motion amplitude of the forward motion of the electrical signal sensed by the diaphragm 21 to decrease; during the backward movement of the diaphragm 21 induced by the electrical signal, the pressure in the back cavity 131 gradually increases and generates a repulsive force that hinders the backward movement of the diaphragm 21, and at this time, a part of the mechanical energy of the electrical signal driving the backward movement of the diaphragm 21 is used to resist the repulsive force of the back cavity 131, resulting in a decrease in the movement amplitude of the forward movement of the electrical signal induced by the diaphragm 21. That is, although the change of the pressure in the back cavity 131 can drive the diaphragm 21 to reset rapidly after the induced electrical signal moves when the diaphragm 21 vibrates, the change of the pressure in the back cavity 131 also causes a hindrance to the electrical signal driving the diaphragm 21 to move, so that the mechanical energy portion of the electrical signal driving the diaphragm 21 to move is used to resist the resistance applied to the diaphragm 21 by the back cavity 131, resulting in the loss of mechanical energy, and the motion amplitude of the diaphragm 21 induced by the electrical signal to move is reduced, the electro-acoustic conversion efficiency of the speaker 20 is reduced, and the sensitivity of electro-acoustic conversion is affected.

In order to solve the problem of low electroacoustic conversion efficiency of the closed type sound box 100, a common solution is to open a hole in the rear cavity 131, specifically, a small hole communicating the rear cavity 131 with the outside is opened in the casing 10 of the closed type sound box 100, when the diaphragm 21 moves backwards, the small hole releases pressure to the outside, and when the diaphragm 21 moves forwards, the pressure is increased in the casing 10, which is to reduce the pressure change in the rear cavity 131 when the diaphragm 21 vibrates, so that the electroacoustic conversion efficiency is improved. However, once the opening is too small, resonance in the housing 10 is easily generated, a resonance peak of a frequency response curve occurs, the sound effect of the sound box 100 is affected, in order to avoid the generation of resonance, a foam is required to be attached to the opening, the electroacoustic conversion efficiency is undoubtedly reduced, and the problem cannot be fundamentally solved; when the opening is too large, wind noise is easily generated, which causes sound dyeing and also affects the sound effect of the sound box 100.

Another way to solve the low efficiency of electro-acoustic conversion of the enclosed sound box 100 is to use a phase inversion type sound box 100 design. Namely, a pipeline is arranged in the casing 10, and an air outlet of the pipeline is arranged on the casing 10, namely, a large opening is formed in the side wall of the casing 10, so that sound waves and sound pressure behind the diaphragm 21 are released to the outside. Such designs also suffer from wind and sound staining, and such designs have fallen outside the scope of the enclosed enclosure 100 and do not have the characteristics of the enclosed enclosure 100.

The present application, in turn, provides a movable member 30 within the housing 10 of the sound box 100. The moving element 30 is transversely separated in the accommodating cavity 13 to separate the accommodating cavity 13 into a rear cavity 131 and a buffer cavity 132, the rear cavity 131 and the buffer cavity 132 are isolated from each other, the speaker 20 is communicated with the rear cavity 131 through the pressure relief hole 22, the casing 10 is provided with a sound pickup hole 14 for communicating the buffer cavity 132 with the outside, and the microphone 40 is arranged in the buffer cavity 132 and picks up external sound through the sound pickup hole 14. That is, according to the scheme of the application, the microphone 40 and the loudspeaker 20 are respectively accommodated in different chambers, so that the influence of sound waves of the loudspeaker 20 on the microphone 40 is reduced, and the sound pickup effect of the microphone 40 is improved.

Further, the microphone 40 is disposed in the buffer cavity 132 and seals the sound pickup hole 14 communicating the buffer cavity 132 with the outside, so that the buffer cavity 132 and the back cavity 131 are both closed cavities, and meanwhile, the movable member 30 is movably disposed in the accommodating cavity 13 to adjust the volumes of the back cavity 131 and the buffer cavity 132 in the moving process, wherein the movable member 30 may be an elastic membrane or a rigid member, when the movable member 30 is an elastic membrane, the edge of the elastic membrane is fixedly connected with the cavity wall of the accommodating cavity 13, so that the elastic membrane is transversely spaced in the accommodating cavity 13, and when the elastic membrane is driven by the vibrating diaphragm 21 to perform reciprocating vibration deformation, the volumes of the back cavity 131 and the buffer cavity 132 can be adjusted. When the movable member 30 is a rigid member, it may be a plate-shaped member or other shape structure, and only the accommodating cavity 13 needs to be divided into the rear cavity 131 and the buffer cavity 132, and at this time, the movable member 30 is integrally slidably disposed in the accommodating cavity 13, so that the diaphragm 21 drives the movable member 30 to integrally move in the accommodating cavity 131, thereby adjusting the volumes of the rear cavity 131 and the buffer cavity 132.

The front radiation direction of the sound of the loudspeaker 20 is taken as the front direction, when the loudspeaker 20 is electrified to enable the diaphragm 21 to move forward, the volume of the back cavity 131 is increased to reduce the pressure of the back cavity 131, so that the suction force to the moving member 30 is generated to drive the moving member 30 to move forward, and the volume and pressure change of the back cavity 131 is slowed down, so that the suction force of the back cavity 131 obstructing the forward movement of the diaphragm 21 is reduced, further, the mechanical energy for resisting the suction force of the back cavity 131 when the diaphragm 21 is driven to move forward by an electric signal is reduced, the mechanical energy loss is reduced, more mechanical energy is used for driving the diaphragm 21 to move forward, namely, when the moving member 30 moves forward along with the diaphragm 21, the pressure change in the back cavity 131 is prevented from being too large, so that the diaphragm 21 can move forward sufficiently under the driving of the electric signal, and the electro-acoustic conversion efficiency and the electro-acoustic conversion sensitivity of the loudspeaker 20 are improved.

Meanwhile, when the moving member 30 vibrates forward along with the diaphragm 21, the volume of the buffer cavity 132 is gradually increased to gradually decrease the pressure, so that gradually increased suction applied to the moving member 30 is generated, the forward movement speed of the moving member 30 is gradually reduced, when the diaphragm 21 moves to the maximum amplitude, the moving member 30 also stops moving, at this time, the suction applied to the buffer cavity 132 by the moving member 30 is the maximum, so that the moving member 30 can be quickly reset backward to increase the volume of the back cavity 131, and the pressure of the back cavity 131 is reduced, so that the suction applied to the diaphragm 21 is generated to drive the diaphragm 21 to be quickly reset. For a traditional closed type sound box, in the process that the diaphragm 21 is reset backwards, the volume of the back cavity 131 is continuously reduced, and the suction force of the back cavity 131 to the diaphragm 21 is gradually reduced; in the present application, the movable member 30 moves backward when the diaphragm 21 is reset, so that the volume of the back cavity 131 is increased, and the pressure is reduced, thereby providing a larger suction force to the diaphragm 21 to drive the diaphragm 21 to reset more quickly, so that the diaphragm 21 timely responds to the vibration sound of the subsequent electrical signal, and the transient characteristic of the sound box 100 is improved.

Similarly, when the diaphragm 21 induces the electrical signal to move backward, the volume of the back cavity 131 is reduced to increase the pressure of the back cavity 131, so that a repulsive force to the moving member 30 is generated to drive the moving member 30 to move backward, so as to slow down the change of the volume and the pressure of the back cavity 131, thereby reducing the repulsive force of the back cavity 131 obstructing the backward movement of the diaphragm 21, further reducing the mechanical energy for resisting the repulsive force of the back cavity 131 when the electrical signal drives the diaphragm 21 to move backward, reducing the loss of the mechanical energy, so that more mechanical energy is used for driving the diaphragm 21 to move backward, that is, when the moving member 30 moves backward with the diaphragm 21, the pressure change in the back cavity 131 is avoided to be too large, so that the diaphragm 21 can move backward sufficiently under the driving of the electrical signal, and the electroacoustic conversion efficiency and the electroacoustic conversion sensitivity of the loudspeaker 20 are improved.

Meanwhile, when the moving member 30 moves backward along with the diaphragm 21, the volume of the buffer cavity 132 gradually decreases to gradually increase the pressure of the buffer cavity 132, so that an increasing repulsive force applied to the moving member 30 is generated, the backward movement speed of the moving member 30 is gradually slowed down, when the diaphragm 21 moves to the maximum amplitude, the moving member 30 also stops moving, and at this time, the repulsive force applied to the buffer cavity 132 is the maximum, so that the moving member 30 can be rapidly restored forward to reduce the volume of the back cavity 131, increase the pressure of the back cavity 131, and thus the repulsive force applied to the diaphragm 21 is generated to drive the diaphragm 21 to be rapidly restored. For a traditional closed type sound box, in the process of forward resetting of the vibrating diaphragm 21, the volume of the rear cavity 131 is continuously increased, and the repulsive force of the rear cavity 131 to the vibrating diaphragm 21 is gradually reduced; in the present application, the movable member 30 moves forward when the diaphragm 21 is reset, so that the volume of the back cavity 131 is reduced, and the pressure is increased, thereby providing a larger repulsive force to the diaphragm 21 to drive the diaphragm 21 to reset faster, so that the diaphragm 21 timely responds to the vibration sound of the subsequent electrical signal, and the transient characteristic of the sound box 100 is improved.

It is not difficult to understand, compare in traditional closed audio amplifier 100, the audio amplifier 100 of this application can drive the reciprocating motion of moving part 30 when vibrating diaphragm 21 vibrates in order to slow down the volume and the pressure change of back chamber 131, make back chamber 131 pressure change diminish, the resistance that hinders vibrating diaphragm 21 motion that back chamber 131 produced because of pressure change when vibrating diaphragm 21 response electric signal motion has so reduced, thereby the loss of the mechanical energy that vibrating diaphragm 21 obtained in the resistance of opposition back chamber 131 pressure resistance has been reduced, can make more mechanical energy be used for driving vibrating diaphragm 21 vibration sound production, avoid back chamber 131 pressure change great influence vibrating diaphragm 21 vibration, the acoustoelectric conversion efficiency of audio amplifier 100 has been improved. Meanwhile, since the pressure inside the buffer chamber 132 changes when the moving member 30 moves, and a restoring force for restoring the moving member 30 and the diaphragm 21 is generated, the diaphragm 21 can be quickly restored after the motion of the induced electrical signal to respond to a subsequent electrical signal for vibration and sound generation, so that the sound box 100 has better transient characteristics.

When the sound box 100 does not work, because the back cavity 131 and the buffer cavity 132 are both closed cavities, the pressure of the back cavity 131 and the pressure of the buffer cavity 132 keep balance, so that the moving member 30 is prevented from moving to one side of the buffer cavity 132 due to external force such as vibration or the action of self gravity, and the position and the structure stability of the moving member 30 and the vibrating diaphragm 21 are kept.

Therefore, it can be understood that, in the technical solution of the present invention, at the same time, the movable element 30 is disposed in the casing 10 of the sound box 100 to divide the accommodating chamber 13 in the casing 10 into the rear chamber 131 and the buffer chamber 132, so that the pressure relief hole 22 of the speaker 20 is communicated with the rear chamber 131, and the microphone 40 is disposed in the buffer chamber 132 to pick up the external sound through the sound pick-up hole 14. With the arrangement, the microphone 40 and the loudspeaker 20 are isolated from each other through the moving element 30, so that the influence of sound waves of the loudspeaker 20 on the microphone 40 is reduced, and the sound pickup effect of the microphone 40 is improved.

Meanwhile, the microphone 40 seals the sound pickup hole 14 communicating the buffer chamber 132 with the outside, so that the rear chamber 131 and the buffer chamber 132 are both closed chambers, and the movable member 30 can move in the accommodating chamber 13. So set up, when speaker 20 circular telegram, vibrating diaphragm 21 vibrates and makes a sound, because speaker 20 communicates with back chamber 131 through pressure release hole 22, the pressure in back chamber 131 just can produce the change when vibrating diaphragm 21 vibrates in order to order about the corresponding activity of moving part 30, in order to slow down the pressure change in back chamber 131, thereby reduce the mechanical energy that vibrating diaphragm 21 obtained and be in the loss of antagonism back chamber 131 pressure change in-process, make more mechanical energy be used for ordering about vibrating diaphragm 21 vibration sound production, avoid back chamber 131 pressure change too big to lead to vibrating diaphragm 21 amplitude to reduce, improve audio-visual conversion efficiency and sensitivity of audio amplifier 100. That is, the pressure change in the back chamber 131 is transferred to the buffer chamber 132, so that the pressure in the back chamber 131 is kept stable, and the phenomenon that the diaphragm 21 is obstructed due to the pressure change in the back chamber 131 is avoided, thereby improving the electroacoustic conversion efficiency and the sensitivity of the sound box 100.

Further, when the moving member 30 moves toward the rear cavity 131, the pressure in the buffer cavity 132 is reduced to generate a suction force for blocking the moving member 30 from moving toward the rear cavity 131, and when the moving member 30 moves to a maximum amplitude along with the diaphragm 21, the suction force applied by the buffer cavity 132 to the moving member 30 is maximum, so that the moving member 30 is rapidly reset and the diaphragm 21 is rapidly reset, so that the diaphragm 21 timely responds to a subsequent electrical signal change to vibrate and sound; when the moving member 30 moves toward the side of the buffer chamber 132, the pressure in the buffer chamber 132 increases to generate a repulsive force that hinders the moving member 30 from moving toward the side of the buffer chamber 132, and when the moving member 30 moves to a maximum amplitude along with the diaphragm 21, the acting force applied by the buffer chamber 132 to the moving member 30 is the maximum, so that the moving member 30 is rapidly reset under the repulsive force of the buffer chamber 132 and drives the diaphragm 21 to rapidly reset, so that the diaphragm 21 timely responds to the change of the subsequent electrical signal to vibrate and sound, and the sound box 100 has a better transient characteristic.

That is, in the present application, the microphone 40 and the speaker 20 are isolated by disposing the movable element 30 in the housing 10, so that the sound pickup effect of the microphone 40 is improved, the electroacoustic conversion efficiency and the sensitivity of the sound box 100 are improved, and the sound box 100 has better transient characteristics.

Referring to fig. 2, in some embodiments of the sound box 100 of the present invention, the peripheral edge of the outer surface of the bottom wall of the buffer cavity 132 is recessed toward one side of the buffer cavity 132 to form a sinking platform 18, and the sound pickup hole 14 is opened in the sinking platform 18.

In this embodiment, the bottom surface of the housing 10 corresponding to the bottom wall of the buffer cavity 132 is recessed toward one side of the buffer cavity 132 to form a sinking platform 18, and the sinking platform 18 is located on the periphery of the bottom surface of the housing 10; at this time, when the sound box 100 is placed on the supporting surface, the surface of the sunken platform 18 is higher than the supporting surface so as to be arranged at an interval with the supporting surface, the sound pickup hole 14 is opened on the sunken platform 18 and penetrates into the buffer cavity 132, the supporting surface is prevented from shielding the sound pickup hole 14 when the sound box 100 is placed on the supporting surface, so that the sound can be received by the microphone 40 through the sound pickup hole 14, and the sound pickup hole 14 is arranged towards the supporting surface, so that the risk that the sound pickup hole 14 is blocked due to the fact that external impurities enter the sound pickup hole 14 is reduced.

Referring to fig. 3, in some embodiments of the sound box 100 of the present invention, the circuit board 50 of the sound box 100 is disposed in the buffer cavity 132, the sound pickup hole 14 penetrates through the cavity wall of the buffer cavity 132 and the circuit board 50, and the microphone 40 is disposed on a side of the circuit board 50 away from the cavity wall of the buffer cavity 132 and blocks the sound pickup hole 14.

The sound box 100 is provided with a circuit board 50 on which components such as a control chip, an antenna, bluetooth, and a memory chip are disposed for data transmission and sound-electricity conversion. In this embodiment, the circuit board 50 is disposed in the buffer cavity 132, and the sound pickup hole 14 penetrates through the cavity wall of the buffer cavity 132 and the circuit board 50, and meanwhile, the microphone 40 is disposed on the side of the circuit board 50 away from the cavity wall, and the sound pickup hole 14 is plugged, so that the microphone 40 can pick up sound and the sound pickup hole 14 is plugged by the microphone 40, so that the buffer cavity 132 is a closed cavity, and the sound box 100 has better transient characteristics.

Further, the lead 23 of the speaker 20 is disposed through the movable element 30 to be electrically connected to the circuit board 50, so as to receive the electrical signal transmitted by the circuit board 50, thereby controlling the vibration diaphragm 21 of the speaker 20 to vibrate and generate sound.

It should be noted that, in the present embodiment, the lead 23 of the speaker 20 is inserted through the movable element 30, the lead 23 may be fixed in the accommodating cavity 13 and relatively slide with the movable element 30 when the movable element 30 vibrates, and in order to maintain the sealing and isolating function of the movable element 30 on the back cavity 131 and the buffer cavity 132, a lubricating layer may be disposed between the lead 23 and the movable element 30 to reduce friction when the lead 23 and the movable element 30 relatively move, and also to maintain the isolation of the back cavity 131 and the buffer cavity 132. Of course, the wire 23 can be fixed to the moveable member 30 and the length of the wire 23 can be extended to leave a certain length of the wire 23 in the rear cavity 131 and the buffer cavity 132, so that the wire 23 can reciprocate with the moveable member 30 and the wire 23 can be prevented from being damaged due to tension during vibration.

Referring to fig. 3 and 4, in some embodiments of the sound box 100 of the present invention, the sound box 100 further includes a spacer 60, the spacer 60 is sandwiched between the circuit board 50 and the cavity wall of the buffer cavity 132, so that the circuit board 50 and the cavity wall are disposed at an interval, and the sound pickup hole 14 penetrates through the cavity wall of the buffer cavity 132, the spacer 60 and the circuit board 50.

In this embodiment, the circuit board 50 is lifted up by the spacer 60, so that the circuit board 50 and the cavity wall of the buffer cavity 132 are arranged at intervals, a heat dissipation space is formed between the circuit board 50 and the cavity wall of the buffer cavity 132, heat dissipation of the circuit board 50 is accelerated, and the situation that the performance of components such as the microphone 40 on the circuit board 50 is affected due to overhigh temperature of the circuit board 50 caused by heat accumulation of the circuit board 50 is avoided. Further, in order to form the buffer cavity 132 as a closed cavity, so that the pressure variation generated when the moving part 30 vibrates with the diaphragm 21 drives the moving part 30 to rapidly reset and improve the transient characteristic of the speaker 20, in the embodiment, the sound pickup hole 14 penetrates through the cavity wall of the buffer cavity 132, the spacer 60 and the circuit board 50, so that the microphone 40 picks up sound through the sound pickup hole 14, the heat dissipation effect of the circuit board 50 is also improved, and meanwhile, the better transient characteristic of the sound box 100 is also maintained.

Referring to fig. 2 and 5, in some embodiments of the sound box 100 of the present invention, a plurality of microphones 40 are provided, and the plurality of microphones 40 are spaced along a circumferential direction of the sound box 100.

In this embodiment, a plurality of microphones 40 are disposed in the sound box 100, so that the plurality of microphones 40 are disposed along the circumferential direction of the sound box 100 at intervals, at this time, the plurality of microphones 40 can pick up sound sources from all directions, and the sounds picked up by the plurality of microphones 40 can be mutually verified, so as to correctly judge the user instruction, thereby improving the sound pickup accuracy of the sound box 100.

Further, in some embodiments, the control system of the sound box 100 is provided with a corresponding sound pickup algorithm, and it can be understood that the plurality of microphones 40 are arranged at intervals along the circumferential direction of the sound box 100, the microphones 40 at different positions have different times for picking up sound waves, the determined sound source directions are different, and the sound waves may have phase and frequency changes during the transmission process due to the existence of obstacles. According to the sound pickup algorithm, the sound waves picked up by each microphone 40 can be weighted, different transfer functions are called to weight the phase and amplitude of the sound waves received by each microphone 40 according to the preset corresponding relation of parameters such as the sound source distance, the sound source direction, the sound source height and the frequency of the sound waves in a program and the sound source parameters picked up by each microphone 40, and the condition that the information picked up by a plurality of microphones 40 by the same sound source is the highest in precision and the same in time is guaranteed.

Further, in some embodiments, the bottom surface of the housing 10 is provided with a sunken platform 18, the sound pickup holes 14 are opened at the sunken platform 18, at this time, the sunken platform 18 may be circumferentially arranged along the circumferential direction of the sound box 100, the plurality of sound pickup holes 14 are circumferentially distributed on the sunken platform 18 along the circumferential direction of the sound box 100, and each microphone 40 correspondingly plugs one sound pickup hole 14 so as to keep the buffer cavity 132 closed. So configured, the sound pickup hole 14 is disposed toward the supporting surface, and at this time, the influence of signal superposition and interference caused by the reflection of sound on the supporting surface on the sound pickup effect of the microphone 40 is considered. Pickup information due to the reflection of the supporting surface can be subtracted in the pickup algorithm to improve the pickup accuracy of the sound box 100.

In some embodiments of the sound box 100 of the present invention, the sound pickup hole 14 is opened on a side wall of the buffer chamber 132.

With such an arrangement, the sound pickup hole 14 is directly exposed to the outside and cannot be shielded, so that the speaker 20 can pick up external sound conveniently. In some embodiments, the bottom wall of the buffer cavity 132 is provided with sound-absorbing cotton, which can absorb a part of the pressure difference generated in the buffer cavity 132, so as to avoid the movement of the movable member 30 being affected by the excessive variation of the pressure difference in the buffer cavity 132. Simultaneously, inhale the setting of sound cotton 90, the noise when also transmitting the sound wave in holding chamber 13 and the motion of moving part 30 when can absorbing speaker 20 vibrating diaphragm 21 vibration avoids the sound wave to reflect repeatedly in holding chamber 13 and produces the resonance, leads to tone quality to contain muddy, inhales the setting of sound cotton and can effectively improve the tone quality of audio amplifier 100. At this moment, the lateral wall in cushion chamber 132 is seted up in pickup hole 14 for inhale the setting of sound cotton and pick up the setting of sound hole 14 and do not influence each other, can avoid inhaling the sound cotton and shelter from pickup hole 14 and influence external sound and transmit in cushion chamber 132.

Referring to fig. 3, in some embodiments of the sound box 100 of the present invention, the sound box 100 further includes a dust-proof foam 70, and the dust-proof foam 70 covers the sound pickup hole 14.

In this embodiment, the pickup hole 14 is covered with the dust-proof foam 70, and the dust-proof foam 70 is provided with a plurality of small holes, so that the sound wave is not influenced to be transmitted to the microphone 40 through the pickup hole 14 for being collected by the microphone 40, and the effect of preventing dust and shielding foreign matters from entering the pickup hole 14 can be effectively achieved, thereby preventing the foreign matters from blocking the pickup hole 14. The dustproof foam 70 may cover the outer opening of the sound pickup hole 14, so as to facilitate replacement of the dustproof foam 70, may be filled in the sound pickup hole 14, or may be disposed in the buffer cavity 132 to cover the inner opening of the sound pickup hole 14 in the following embodiments.

Referring to fig. 3, in some embodiments of the sound box 100 of the present invention, the dustproof foam 70 is disposed in the buffer cavity 132.

In this embodiment, set up dustproof bubble cotton 70 in cushion chamber 132, can avoid dustproof bubble cotton 70 to expose in the external world, reduce the damage risk of dustproof bubble cotton 70, improve dustproof bubble cotton 70's life.

In some embodiments, the circuit board 50 and the spacer 60 are disposed in the sound box 100, and the sound pickup hole 14 is disposed through the spacer 60 and the circuit board 50, at this time, the dustproof foam 70 may be sandwiched between the spacer 60 and the bottom wall of the buffer cavity 132, or the dustproof foam 70 may be sandwiched between the spacer 60 and the circuit board 50, and also covers the sound pickup hole 14 to prevent foreign matters from entering the sound pickup hole 14.

Preferably, the dustproof foam 70 is adhered to the bottom wall of the buffer cavity 132 by means of adhesion, so as to facilitate assembly and disassembly.

Referring to fig. 3, in some embodiments of the sound box 100 of the present invention, the sound box 100 further includes an adjusting mechanism 80, and the adjusting mechanism 80 is disposed in the accommodating cavity 13 and configured to elastically support the movable member 30.

It can be understood that, according to the technical scheme of the application, the pressure change in the back cavity 131 when the vibration of the diaphragm 21 is slowed down through the movement of the movable member 30, so that the pressure change process of the back cavity 131 is slowed down, and the pressure difference of the change of the back cavity 131 is reduced, thereby reducing the loss of the mechanical energy obtained by the diaphragm 21 in the process of resisting the pressure change of the back cavity 131, so that more mechanical energy is used for driving the diaphragm 21 to vibrate and sound, avoiding the vibration of the diaphragm 21 from being greatly influenced by the pressure change of the back cavity 131, and improving the sound-electricity conversion efficiency of the sound box 100. Meanwhile, as the moving member 30 moves, the pressure in the buffer chamber 132 changes to provide a restoring force for restoring the moving member 30 and the diaphragm 21, so that the diaphragm 21 can be quickly restored to respond to a subsequent electrical signal to generate sound, and thus the sound box 100 has better transient characteristics. Further, in the present embodiment, an adjusting mechanism 80 is further disposed in the accommodating cavity 13 of the housing 10, the adjusting mechanism 80 is disposed in the accommodating cavity 13, and the adjusting mechanism 80 may be, but is not limited to, an elastic member, a magnetic component in the following embodiments, or a combination of the two mechanisms, if the adjusting mechanism 80 is an elastic member, such that one end of the elastic member abuts against the bottom wall of the buffer cavity 132, and the other end of the elastic member abuts against the movable member 30, so as to elastically support the movable member 30.

So set up, when the moving part 30 moves to the side of the buffer chamber 132 under the driving of the vibrating diaphragm 21, the adjusting mechanism 80 generates the elastic repulsive force to act together with the repulsive force of the buffer chamber 132, so as to slow down the movement of the moving part 30, when the moving part 30 moves to the maximum amplitude, the elastic force of the adjusting mechanism 80 and the repulsive force of the buffer chamber 132 act together to drive the moving part 30 to reset rapidly and drive the vibrating diaphragm 21 to reset rapidly, so that the vibrating diaphragm 21 responds to the vibration and sound of the subsequent electrical signal in time. When the moving member 30 moves along with the diaphragm 21 to the side far from the buffer cavity 132, if the adjusting mechanism 80 is a magnetic repulsion structure (i.e., magnetic members are respectively disposed on the buffer cavity side and the moving member, and the two magnetic members repel each other) or a compression spring, the repulsive force of the adjusting mechanism 80 is reduced in the process that the moving member 30 moves to the side far from the buffer cavity 132, and at this time, the force applied to the moving member 30, which is mainly generated by the pressure change of the rear cavity 131 and the buffer cavity 132, reduces the movement of the moving member 30, and drives the moving member 30 to rapidly return after the moving member 30 moves to the maximum amplitude; if the adjusting mechanism 80 is an elastic member, and two ends of the elastic member are respectively connected to the bottom walls of the moving member 30 and the buffer cavity 132, in the moving process of the moving member 30 away from one side of the buffer cavity 132, the elastic tension of the adjusting mechanism 80 and the suction of the buffer cavity 132 act together to slow down the movement of the moving member 30, and when the moving member 30 moves to the maximum amplitude, the elastic tension of the adjusting mechanism 80 and the suction of the buffer cavity 132 act together to drive the moving member 30 to reset rapidly and drive the diaphragm 21 to reset rapidly, so that the diaphragm 21 can respond to the vibration of the subsequent electrical signal to sound in time.

In addition, when the sound box 100 does not work, the adjusting mechanism 80 elastically supports the moving member 30, and the superposition of the pressure of the buffer chamber 132 and the elastic force of the adjusting mechanism 80 and the pressure of the rear chamber 131 keep a balanced state, so that the moving member 30 keeps a fixed position and shape, and the moving member 30 is prevented from moving to one side of the buffer chamber 132 due to external force such as vibration or the action of self gravity, thereby keeping the position and the structure of the moving member 30 and the diaphragm 21 stable.

Referring to fig. 5, in some embodiments of the sound box 100 of the present invention, the adjusting mechanism 80 includes:

the first magnetic element 81 and the first magnetic element 81 are arranged on the movable element 30; and

the second magnetic member 82 is disposed in the buffer cavity 132 and spaced from the bottom wall, the second magnetic member 82 is disposed opposite to the first magnetic member 81, and the magnetic poles of the second magnetic member 82 and the magnetic poles of the first magnetic member 81 are the same.

In this embodiment, the adjusting mechanism 80 is a magnetic component, the first magnetic element 81 of the magnetic component is disposed on the movable element 30, the second magnetic element 82 of the magnetic component is disposed in the buffer cavity 132, and the magnetic poles of the second magnetic element 82 and the first magnetic element 81 are the same, so that the first magnetic element 81 and the second magnetic element 82 repel each other, the magnetic repulsion between the first magnetic element 81 and the second magnetic element 82 can prevent the first magnetic element 81 and the movable element 30 from moving to the buffer cavity 132 side, so as to drive the movable element 30 and the diaphragm 21 to rapidly reset when the movable element 30 moves backward along with the diaphragm 21, compared with the way that the second magnetic element 82 is disposed on the rear cavity 131 side to provide the magnetic attraction to the first magnetic element 81, the second magnetic element 82 is disposed in the buffer cavity 132 to apply the magnetic repulsion to the first magnetic element 81, so that the magnetic force provided by the magnetic component to the movable element 30 to the buffer cavity 132 side gradually increases when the movable element 30 moves to the buffer cavity 132 side, when the moving part 30 reaches the maximum amplitude, the maximum repulsive force of the buffer cavity 132 is also applied to the maximum magnetic force of the magnetic component, so that the moving part 30 is rapidly reset under the repulsive force of the buffer cavity 132 and the magnetic force of the magnetic component, and drives the diaphragm 21 to rapidly reset, so that the diaphragm 21 timely responds to the change of the subsequent electric signal to vibrate and sound, and the sound box 100 has better transient characteristics.

In this embodiment, the second magnetic member 82 is disposed in the buffer cavity 132 and is repulsive to the first magnetic member 81. When the movable member 30 moves toward the rear chamber 131 side with the diaphragm 21, there are the following cases: when the movable element 30 moves to the rear chamber 131 side, the first magnetic element 81 and the second magnetic element 82 are always in a repulsive state; before the movable member 30 moves to the rear chamber 131 to the maximum amplitude, the first magnetic member 81 and the second magnetic member 82 are far away from each other and do not repel each other; when the movable member 30 moves to the maximum amplitude toward the rear chamber 131, the first magnetic member 81 and the second magnetic member 82 just exceed the magnetic field range therebetween. In a preferred embodiment, the first magnetic member 81 and the second magnetic member 82 are always in a repulsive state when the movable member 30 moves along with the diaphragm 21, and at this time, the movable member 30 is always driven by the pressure change of the back cavity 131 and the magnetic repulsive force of the magnetic component when moving to the side of the back cavity 131, so as to respond to the vibration of the diaphragm 21 quickly, reduce the pressure change of the back cavity 131 quickly and avoid the vibration of the diaphragm 21 being affected by an excessive pressure difference of the back cavity 131; meanwhile, when the moveable member 30 is restored to the side of the buffer chamber 132, the problem that the acting force applied to the moveable member 30 suddenly changes in a step-like manner due to the magnetic repulsion of the magnetic element during the restoration process of the moveable member 30, thereby affecting the stability of the moveable member 30 during the movement process is avoided.

Referring to fig. 3, in some embodiments of the sound box 100 of the present invention, the first magnetic member 81 is disposed on a side surface of the movable member 30 facing the buffer cavity 132 and spaced apart from the second magnetic member 82.

In this embodiment, the first magnetic member 81 is disposed on a side surface of the movable member 30 facing the buffer cavity 132 and spaced apart from the second magnetic member 82, so as to cooperate with the second magnetic member 82 to block the movable member 30 from moving toward the buffer cavity 132. With such an arrangement, the first magnetic member 81 can be prevented from colliding with the speaker 20 when the movable element 30 moves, thereby improving the safety in use.

Further, in some embodiments, the movable element 30 may be made of a magnetic shielding material, so as to prevent the magnetic force of the first magnetic element 81 and the second magnetic element 82 from affecting the magnetic field in the speaker 20, and prevent the diaphragm 21 from vibrating and radiating sound, thereby ensuring that the speaker 20 has a good sound effect.

Referring to fig. 3, in some embodiments of the sound box 100 of the present invention, the microphone 40 is disposed on the circuit board 50, the circuit board 50 is disposed on the bottom wall of the buffer cavity 132 in a stacked manner, and the second magnetic element 82 is disposed at a distance from the circuit board 50 and the microphone 40 along the moving direction of the movable element 30.

With such an arrangement, the moving member 30 can be prevented from colliding with the microphone 40 and the circuit board 50 when moving along with the diaphragm 21 to the buffer chamber 132 side, so that the safety of the sound box 100 in the using process is improved, and the performance stability and the service life of the sound box 100 are ensured.

Referring to fig. 6, in some embodiments of the sound box 100 of the present invention, the bottom wall of the buffer cavity 132 is protruded with a plurality of limiting steps 17, and the second magnetic member 82 is supported on the plurality of limiting steps 17.

According to the technical scheme of the application, the magnetic component is arranged, and the second magnetic element 82 applies a magnetic repulsive force to the first magnetic element 81 to block the moving element 30 from moving to one side of the buffer cavity 132; as can be appreciated, the magnetic repulsion between the second magnetic member 82 and the first magnetic member 81 interacts, and the first magnetic member 81 also applies a magnetic repulsion to the second magnetic member 82; in this embodiment, the plurality of limiting steps 17 are convexly disposed on the bottom wall of the buffer cavity 132 for supporting the second magnetic member 82, so that the second magnetic member 82 is prevented from moving in a direction away from the first magnetic member 81 under the action of the magnetic repulsive force of the first magnetic member 81, the position stability of the second magnetic member 82 in the buffer cavity 132 is improved, and the magnetic repulsive force applied to the first magnetic member 81 and the movable member 30 by the second magnetic member 82 due to the movement of the second magnetic member 82 is also prevented from being reduced, so that the movable member 30 cannot be rapidly reset, and the transient characteristic of the speaker 20 is affected.

In some embodiments of the sound box 100 of the present invention, the movable member 30 is a rigid member, and is slidably disposed in the accommodating chamber 13 to reciprocate with the vibration of the diaphragm 21 of the speaker 20.

In this embodiment, the movable element 30 is integrally slidably disposed in the accommodating chamber 13, so that the diaphragm 21 drives the movable element 30 to move integrally, thereby adjusting the volumes of the back chamber 131 and the buffer chamber 132. Meanwhile, the movable member 30 is a rigid member, which may be but not limited to a plastic material, a metal material, a ceramic material, or the like, and may be a plate-shaped structure or other shape structure, and only the accommodation chamber 13 needs to be divided into the rear chamber 131 and the buffer chamber 132, and the rigid movable member 30 is deformed and reduced under the action of an external force, so that the pressure change of the rear chamber 131 and the buffer chamber 132 is mainly used for driving the movable member 30 to slide in the accommodation chamber 13 in a reciprocating manner, thereby reducing the mechanical energy loss of the movable member 30 during the movement process.

Referring to fig. 3 and 5 in combination, in some embodiments of the sound box 100 of the present invention, the movable member 30 is provided with a guide hole, and a guide post 15 is disposed in the housing 10, wherein the guide post 15 extends along a moving direction of the movable member 30 and penetrates through the guide hole.

In the solution of the foregoing embodiment, the movable element 30 is slidably disposed in the accommodating chamber 13 as a whole to adjust the volumes of the back chamber 131 and the buffer chamber 132, so as to improve the electroacoustic conversion efficiency and the sensitivity of the sound box 100. In this embodiment, a guiding structure is disposed in the sound box 100, the guiding structure includes a guiding post 15 and a guiding hole that are matched with each other, wherein the guiding hole is correspondingly disposed on the moving member 30, the guiding post 15 is disposed in the housing 10 and extends along the moving direction of the moving member 30, and the guiding post 15 is disposed in the guiding hole in a penetrating manner, so that the moving member 30 slides along the guiding post 15, and the stability of the moving process of the moving member 30 is improved. Of course, the guide post 15 may also be disposed on the moving member 30, and correspondingly, a connecting portion is disposed in the accommodating cavity 13, and a guide hole is formed in the connecting portion, so that the moving member 30 can slide along the guide post 15 by the guide post 15 penetrating the guide hole, thereby improving the stability of the moving process of the moving member 30.

Referring to fig. 6, in some embodiments of the sound box 100 of the present invention, the guide post 15 is disposed on a side wall of the accommodating cavity 13, and the guide hole is opened at an edge of the movable member 30.

In this embodiment, the guide hole is formed in the movable element 30 and located at the edge of the movable element 30, and the guide post 15 is correspondingly disposed on the cavity wall of the accommodating cavity 13, so that the contact area between the guide post 15 and the guide hole can be reduced, the contact area between the movable element 30 and the housing 10 can be reduced, the friction between the movable element 30 and the housing 10 during the movement process can be reduced, and the sliding process of the movable element 30 in the housing 10 can be smoother.

Referring to fig. 5 and 6, in some embodiments of the sound box 100 of the present invention, a plurality of the guide holes are disposed around the movable member 30, a plurality of the guide posts 15 are disposed, and each of the guide posts 15 penetrates through one of the guide holes.

It will be appreciated that the stability of the moving process of the movable member 30 can be further improved by providing a plurality of sets of guide structures in the sound box 100, with a guide hole and a guide post 15 cooperating with each other as a set of guide structures.

In some embodiments of the sound box 100 of the present invention, the circumferential side wall of the movable member 30 is attached to the cavity wall of the accommodating cavity 13;

or, a lubricating layer is arranged between the circumferential side wall of the moving part 30 and the cavity wall of the accommodating cavity 13.

According to the technical scheme, the movable piece 30 is transversely separated from the accommodating cavity 13 of the shell 10, the accommodating cavity 13 is separated into the rear cavity 131 and the buffer cavity 132 which are isolated from each other, the movable piece 30 slides in the accommodating cavity 13 in a reciprocating manner when the vibrating diaphragm 21 moves, and the fact that the sound-electricity conversion efficiency and the sensitivity of the loudspeaker 20 are influenced by the pressure change in the rear cavity 131 is avoided. It can be understood that, in the sliding process of the moving member 30, the moving member 30 needs to always isolate the rear cavity 131 from the buffer cavity 132, that is, the moving member 30 has better sealing performance in the sliding process, at this time, the moving member 30 and the housing 10 can be completely attached to meet the sealing requirement, and in order to reduce the friction between the sliding process of the moving member 30 and the cavity wall of the accommodating cavity 13, the circumferential side wall of the moving member 30 and the cavity wall of the accommodating cavity 13 can be kept at a higher finish degree. Or, a lubricating layer is arranged between the circumferential side wall of the moving part 30 and the cavity wall of the accommodating cavity 13, which may be but is not limited to lubricating oil and lubricating grease, and the grease material can effectively fill the gap between the circumferential side wall of the moving part 30 and the cavity wall of the accommodating cavity 13, so that the sealing capability is high, the friction between the sliding process of the moving part 30 and the cavity wall of the accommodating cavity 13 can be reduced, and the sliding of the moving part 30 can be smoother due to the good sealing performance of the moving part 30 in the sliding process.

Referring to fig. 3 and 5, in some embodiments of the sound box 100 of the present invention, the housing 10 includes:

the upper shell 11, the sound outlet 111 is opened on the upper shell 11, and the speaker 20 is arranged in the upper shell 11; and

the lower casing 12, lower casing 12 with the mutual lid of epitheca 11 closes in order to enclose and close formation the holding chamber 13, the moving part 30 movably is located in the lower casing 12.

In this embodiment, the housing 10 is provided as a split type upper housing 11 and a split type lower housing 12, wherein the upper housing 11 and the lower housing 12 are mutually covered to enclose the accommodating cavity 13. In this embodiment, mounting spaces are formed in the upper casing 11 and the lower casing 12, the upper casing 11 is further provided with the sound outlet 111, and at this time, the speaker 20 is mounted in the mounting space of the upper casing 11 and aligned with the sound outlet 111 so as to radiate sound outwards after the upper casing 11 and the lower casing 12 are closed; the moveable member 30 is also disposed in the lower housing 12. With such an arrangement, only the upper shell 11 and the lower shell 12 need to be disassembled, so that the speaker 20 and the moving part 30 in the sound box 100 can be separated from the microphone 40, and the sound box 100 can be disassembled and assembled more conveniently. In this embodiment, the connection manner between the upper shell 11 and the lower shell 12 may be, but is not limited to, a threaded connection, a snap connection, a magnetic attraction, an adhesion, or a combination of two or more of the foregoing connection manners, and is not limited herein.

Referring to fig. 3 and 6, in some embodiments of the sound box 100 of the present invention, the opening of the lower shell 12 is convexly provided with a plurality of limiting pillars 16, the plurality of limiting pillars 16 are arranged at intervals along the circumferential direction of the opening, the upper shell 11 covers the opening of the lower shell 12, and the plurality of limiting pillars 16 abut against the inner sidewall of the upper shell 11.

So set up, can increase the area of contact of epitheca 11 and inferior valve 12, make epitheca 11 and a plurality of spacing post 16 block simultaneously, can improve the stability of being connected between epitheca 11 and the inferior valve 12, also be convenient for fix a position when epitheca 11 and inferior valve 12 equipment, improve audio amplifier 100's installation convenience.

Similarly, in some embodiments, the opening of the upper shell 11 is convexly provided with a plurality of limiting columns 16, and the plurality of limiting columns 16 are arranged along the circumferential interval of the opening, the lower shell 12 covers the opening of the upper shell 11, and the plurality of limiting columns 16 abut against the inner side wall of the lower shell 12, so that the contact area between the upper shell 11 and the lower shell 12 is increased, meanwhile, the upper shell 11 and the plurality of limiting columns 16 are clamped, the connection stability between the upper shell 11 and the lower shell 12 is improved, the positioning is facilitated when the upper shell 11 and the lower shell 12 are assembled, and the installation convenience of the sound box 100 is improved.

Of course, the position-limiting columns 16 may be provided on both the upper casing 11 and the lower casing 12 of the sound box 100 to further improve the connection stability between the upper casing 11 and the lower casing 12.

In some embodiments, the movable member 30 is a rigid member, and the guide post 15 is disposed on the side wall of the accommodating cavity 13 and penetrates through the movable member 30 to guide the movable member 30 to slide along the guide post 15, so that the sliding process of the movable member 30 is more stable, at this time, the limiting post 16 and the guide post 15 can be integrally disposed, that is, the guide post 15 is disposed on the inner side wall of the lower shell 12, and the guide post 15 is extended into the upper shell 11, so that the portion protruding out of the lower shell 12 forms the limiting post 16; or, the guide posts 15 are arranged on the inner side wall of the upper shell 11, and the guide posts 15 are arranged to extend into the lower shell 12, so that the limiting posts 16 are formed on the part protruding out of the upper shell 11, and the production and the processing are convenient.

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 modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. An acoustic enclosure, comprising:

2. The sound box according to claim 1, wherein the circuit board of the sound box is disposed in the buffer chamber, the sound pickup hole penetrates through the wall of the buffer chamber and the circuit board, and the microphone is disposed on a side of the circuit board facing away from the wall of the buffer chamber and blocks the sound pickup hole.

3. The acoustic enclosure according to claim 2, further comprising a spacer interposed between the circuit board and the wall of the buffer chamber so that the circuit board is spaced apart from the wall of the buffer chamber, wherein the pickup hole penetrates the wall of the buffer chamber, the spacer, and the circuit board.

4. An acoustic enclosure according to claim 1, wherein the plurality of microphones is provided, the plurality of microphones being spaced circumferentially of the acoustic enclosure.

5. The sound box according to claim 1, wherein the peripheral edge of the outer surface of the bottom wall of the buffer cavity is recessed toward one side of the buffer cavity to form a sink, and the sound pickup hole is provided in the sink.

6. The acoustic enclosure of claim 1, wherein the pick-up hole opens into a side wall of the damper.

7. The acoustic enclosure of claim 1, further comprising a dust foam covering the sound pickup aperture.

8. The sound box of claim 7, wherein the dust-proof foam is disposed in the buffer chamber.

9. The sound box according to claim 1, further comprising an adjustment mechanism disposed in the accommodation chamber for elastically supporting the movable member.

10. An acoustic enclosure according to claim 9, wherein the adjustment mechanism comprises:

the second magnetic part is arranged in the buffer cavity and located on one side, deviating from the bottom wall, of the microphone and arranged at intervals with the microphone, the second magnetic part is arranged opposite to the first magnetic part, and the magnetic poles of the second magnetic part, which are arranged opposite to the first magnetic part, are the same.

11. An acoustic enclosure according to any one of claims 1 to 10, wherein the movable member is a rigid member and is slidably disposed within the receiving cavity for reciprocal vibration upon actuation of the loudspeaker diaphragm.