Speakers

Abstract

The present invention proposes a sound box, including a shell, a speaker, a movable part and a microphone. A housing cavity is formed in the shell, and a sound outlet and a sound pickup hole are provided in the shell to connect the housing cavity with the outside. The speaker is accommodated in the housing cavity, and the sound outlet is blocked. The movable part is separated from the housing cavity to separate the housing cavity into a rear cavity and a buffer cavity. The speaker is connected to the rear cavity through a pressure relief hole, and the sound pickup hole is connected to the buffer cavity. The movable part can reciprocate in the housing cavity to change the volume of the rear cavity. The microphone is arranged in the buffer cavity, and the sound pickup hole is blocked. The technical solution of the present application improves the sound pickup effect of the microphone in the sound box.

Description

Technical Field

[0001] The present invention relates to the technical field of sound boxes, and in particular to a sound box. Background Art

[0002] In existing closed sound boxes, the speaker is located at the sound outlet of the shell to radiate sound outward, and the space inside the shell forms the back cavity of the speaker. With the development of technology, microphones are often installed in the sound box to improve the intelligence of the sound box. However, in the closed sound box, the microphone and the speaker can only be located in the back cavity at the same time, and when the speaker sounds, it will affect the sound pickup effect of the microphone in the closed sound box. Summary of the invention

[0003] The main purpose of the present invention is to provide a sound box, aiming to improve the sound pickup effect of a microphone in the sound box.

[0004] To achieve the above object, the present invention provides a sound box, comprising:

[0005] A shell body, wherein a receiving cavity is formed in the shell body, and the shell body is provided with a sound outlet and a sound pickup hole connecting the receiving cavity with the outside;

[0006] A speaker, the speaker is accommodated in the accommodation cavity and blocks the sound outlet;

[0007] a movable member, the movable member being separated from the accommodating chamber to separate the accommodating chamber into a rear chamber and a buffer chamber, the speaker being connected to the rear chamber through a pressure relief hole, the sound pickup hole being connected to the buffer chamber, and the movable member being reciprocating in the accommodating chamber to change the volume of the rear chamber; and

[0008] A microphone is arranged in the buffer cavity and blocks the sound pickup hole.

[0009] In one embodiment of the speaker of the present invention, the circuit board of the speaker is arranged in the buffer cavity, the sound pickup hole passes through the cavity wall of the buffer cavity and the circuit board, and the microphone is arranged on the side of the circuit board away from the cavity wall of the buffer cavity and blocks the sound pickup hole.

[0010] In one embodiment of the speaker of the present invention, the speaker further comprises a spacer, wherein the spacer is sandwiched between the circuit board and the wall of the buffer cavity so that the circuit board and the wall of the buffer cavity are spaced apart, and the sound pickup hole passes through the wall of the buffer cavity, the spacer and the circuit board.

[0011] In an embodiment of the speaker of the present invention, a plurality of the microphones are provided, and the plurality of microphones are spaced apart along the circumference of the speaker.

[0012] In an embodiment of the speaker of the present invention, the periphery 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 opened in the sink.

[0013] In an embodiment of the speaker of the present invention, the sound pickup hole is opened on the side wall of the buffer cavity.

[0014] In an embodiment of the speaker of the present invention, the speaker further comprises dustproof foam, and the dustproof foam covers the sound pickup hole.

[0015] In an embodiment of the speaker of the present invention, the dustproof foam is disposed in the buffer cavity.

[0016] In an embodiment of the speaker of the present invention, the speaker further comprises an adjusting mechanism, and the adjusting mechanism is disposed in the accommodating cavity and is used for elastically supporting the movable part.

[0017] In one embodiment of the speaker of the present invention, the adjustment mechanism comprises:

[0018] A first magnetic member, the first magnetic member is disposed on the movable member; and

[0019] The second magnetic member is arranged in the buffer cavity and spaced apart from the bottom wall. The second magnetic member is arranged opposite to the first magnetic member, and the magnetic poles of the second magnetic member and the first magnetic member are arranged opposite to each other with the same magnetic property.

[0020] In an embodiment of the speaker box of the present invention, the movable member is a rigid member and is slidably disposed in the accommodating cavity so as to reciprocate and vibrate under the driving of the speaker diaphragm.

[0021] The technical solution of the present invention is to simultaneously set a movable part in the shell of the sound box to separate the accommodating cavity in the shell into a rear cavity and a buffer cavity, so that the pressure relief hole of the speaker is connected to the rear cavity, and the microphone is set in the buffer cavity to pick up external sounds through the sound pickup hole. In this way, the microphone and the speaker are isolated from each other by the movable part, reducing the influence of the speaker sound waves on the microphone, and improving the sound pickup effect of the microphone.

[0022] At the same time, the microphone blocks the sound pickup hole connecting the buffer cavity and the outside world, so that the back cavity and the buffer cavity are both closed cavities, and the movable parts can move in the accommodating cavity. With such a configuration, when the speaker is powered on, the diaphragm vibrates and makes a sound. Since the speaker is connected to the back cavity through the pressure relief hole, the pressure in the back cavity will change when the diaphragm vibrates to drive the movable parts to move accordingly, so as to slow down the pressure change in the back cavity, thereby reducing the loss of mechanical energy obtained by the diaphragm in the process of resisting the pressure change in the back cavity, so that more mechanical energy can be used to drive the diaphragm to vibrate and make a sound, avoiding excessive changes in the pressure in the back cavity that lead to a reduction in the amplitude of the diaphragm, and improving the electro-acoustic conversion efficiency and sensitivity of the speaker. That is, the pressure change in the back cavity is transferred to the buffer cavity, so that the pressure in the back cavity remains stable, avoiding the phenomenon of hindering the movement of the diaphragm due to the change in the pressure in the back cavity, so as to improve the electro-acoustic conversion efficiency and sensitivity of the speaker.

[0023] Furthermore, when the movable part moves toward one side of the rear cavity, the pressure in the buffer cavity decreases, thereby generating a suction force that hinders the movable part from moving toward the rear cavity; when the movable part moves with the diaphragm to the maximum amplitude, the suction force applied by the buffer cavity to the movable part is maximum, so that the movable part can be quickly reset and the diaphragm can be quickly reset, so that the diaphragm can respond to the subsequent changes in the electrical signal and vibrate and make sounds in time; when the movable part moves toward one side of the buffer cavity, the pressure in the buffer cavity increases, thereby generating a repulsive force that hinders the movable part from moving toward one side of the buffer cavity; when the movable part moves with the diaphragm to the maximum amplitude, the force applied by the buffer cavity to the movable part is maximum, so that the movable part can be quickly reset under the repulsive force of the buffer cavity and the diaphragm can be quickly reset, so that the diaphragm can respond to the subsequent changes in the electrical signal and vibrate and make sounds in time, thereby making the speaker have better transient characteristics.

[0024] That is, the present application isolates the microphone and the speaker by setting movable parts in the shell, thereby improving the sound pickup effect of the microphone, while improving the electroacoustic conversion efficiency and sensitivity of the speaker, and making the speaker have better transient characteristics. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0026] Figure 1 It is a structural diagram of an embodiment of a speaker of the present invention;

[0027] Figure 2 for Figure 1 The structure diagram of the mid-range speaker from another angle;

[0028] Figure 3for Figure 1 A cross-sectional view of the speaker box;

[0029] Figure 4 for Figure 3 The enlarged view of point A in the middle;

[0030] Figure 5 for Figure 1 Exploded view of the mid-range speaker;

[0031] Figure 6 for Figure 5 Structural diagram of the middle and lower shells.

[0032] Description of Figure Numbers:

[0033] Label name Label name 100 Speakers 20 speaker 10 case 21 Diaphragm 11 Upper shell 22 Pressure relief hole 111 Voice outlet 23 wire 12 Lower shell 30 Active parts 13 Accommodation cavity 31 Guide hole 131 Back cavity 40 microphone 132 Buffer cavity 50 Circuit Board 14 Sound hole 60 Spacer 15 Guide column 70 Dust-proof foam 16 Limit column 80 Adjustment mechanism 17 Limiting steps 81 The first magnetic element 18 Sunken Platform 82 The second magnetic member

[0034] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0037] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In addition, in the present invention, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0039] In view of the technical problems reflected in the background art, the present invention proposes a speaker 100 to improve the sound pickup effect of a microphone 40 in the speaker 100 .

[0040] The specific structure of the speaker 100 proposed by the present invention will be described below in a specific embodiment:

[0041] like Figures 1 to 3 As shown, in some embodiments of the speaker 100 of the present invention, the speaker 100 includes:

[0042] A housing 10, wherein a receiving cavity 13 is formed in the housing 10, and the housing 10 is provided with a sound outlet 111 and a sound pickup hole 14 communicating with the receiving cavity 13 and the outside;

[0043] A speaker 20, the speaker 20 is accommodated in the accommodation cavity 13 and blocks the sound outlet 111;

[0044] a movable member 30, the movable member 30 being separated from the accommodating chamber 13 to separate the accommodating chamber 13 into a rear chamber 131 and a buffer chamber 132, the speaker 20 being connected to the rear chamber 131 through a pressure relief hole 22, the sound pickup hole 14 being connected to the buffer chamber 132, the movable member 30 being able to reciprocate and vibrate under the driving of the diaphragm 21 of the speaker 20 to change the volumes of the rear chamber 131 and the buffer chamber 132; and

[0045] The microphone 40 is disposed in the buffer cavity 132 and blocks the sound pickup hole 14 .

[0046] The speaker 100 proposed in this application refers to a closed speaker 100. In a common closed speaker, a shell 10 is provided as a mounting base, and a housing 13 is formed in the shell 10 for mounting a speaker 20 and a microphone 40. Under normal conditions, the housing 13 of the shell 10 is connected with the pressure relief hole 22 of the speaker 20 to form a rear chamber 131 of the speaker 20. The sound radiation direction of the speaker 20 is the front side. Since the shell 10 is closed and the microphone 40 and the speaker 20 are both located in the rear chamber 131, the sound waves radiated backwards when the diaphragm 21 of the speaker 20 vibrates will affect the sound pickup effect of the microphone 40.

[0047] At the same time, in the existing closed speaker, when the diaphragm 21 moves backward, the instantaneous volume of the rear cavity 131 decreases, resulting in an increase in the pressure in the rear cavity 131, which generates a forward driving force on the diaphragm 21, thereby pushing the diaphragm 21 to move forward quickly and reset; when the diaphragm 21 moves forward, the instantaneous volume of the rear cavity 131 increases, resulting in a decrease in the pressure in the rear cavity 131, which generates a backward suction force on the diaphragm 21, thereby driving the diaphragm 21 to move backward quickly and reset, so that the diaphragm 21 has better transient characteristics, which is reflected in the sound effect that when playing rapidly changing or content-rich music, the diaphragm 21 can be quickly reset to quickly respond to changing electrical signals with low latency.

[0048] However, in the existing closed speakers, the change in pressure in the rear cavity 131 will also cause the movement amplitude of the diaphragm 21 to decrease when it senses the electrical signal. For example, in the process of the diaphragm 21 sensing the electrical signal moving forward, the pressure in the rear cavity 131 gradually decreases and generates a suction force that hinders the forward movement of the diaphragm 21. At this time, a part of the mechanical energy of the electrical signal driving the diaphragm 21 to move forward is used to resist the suction force of the rear cavity 131, resulting in a decrease in the movement amplitude of the diaphragm 21 sensing the electrical signal moving forward; in the process of the diaphragm 21 sensing the electrical signal moving backward, the pressure in the rear cavity 131 gradually increases and generates a repulsive force that hinders the backward movement of the diaphragm 21. At this time, a part of the mechanical energy of the electrical signal driving the diaphragm 21 to move backward is used to resist the repulsive force of the rear cavity 131, resulting in a decrease in the movement amplitude of the diaphragm 21 sensing the electrical signal moving forward. That is, although the change in pressure in the rear cavity 131 when the diaphragm 21 vibrates can drive the diaphragm 21 to quickly reset after the induced electrical signal moves, the change in pressure in the rear cavity 131 also hinders the movement of the diaphragm 21 driven by the electrical signal, so that part of the mechanical energy of the diaphragm 21 driven by the electrical signal is used to counteract the resistance applied to the diaphragm 21 by the rear cavity 131, resulting in mechanical energy loss, which reduces the movement amplitude of the diaphragm 21 induced by the electrical signal, reduces the electroacoustic conversion efficiency of the speaker 20, and affects the sensitivity of the electroacoustic conversion.

[0049] In order to solve the problem of low electroacoustic conversion efficiency of the closed speaker 100, a common solution is to open a hole in the rear cavity 131, which is specifically embodied in that a small hole is opened on the shell 10 of the closed speaker 100 to connect the rear cavity 131 and the outside world. When the diaphragm 21 moves backward, the pressure is released to the outside world through the small hole. When the diaphragm 21 moves forward, the pressure is increased in the shell 10. This method is to reduce the pressure change in the rear cavity 131 when the diaphragm 21 vibrates, thereby improving the electroacoustic conversion efficiency. However, once the opening is too small, it is very easy to produce resonance in the shell 10, and a resonance peak of the frequency response curve will appear, which affects the sound effect of the speaker 100. In order to avoid the generation of resonance, it is necessary to stick a foam at the opening. Such an effect undoubtedly reduces the electroacoustic conversion efficiency and cannot fundamentally solve the problem; when the opening is too large, it is very easy to produce wind sound, causing sound coloration, which also affects the sound effect of the speaker 100.

[0050] Another way to solve the low electro-acoustic conversion efficiency of the closed speaker 100 is to use a phase-inverted speaker 100 design. That is, a pipe is set in the shell 10, and the air outlet of the pipe is on the shell 10, that is, a large opening is opened on the side wall of the shell 10 to release the sound waves and sound pressure behind the diaphragm 21 to the outside. Such a design will also cause wind noise and sound coloration, and such a design has exceeded the scope of the closed speaker 100 and does not have the characteristics of the closed speaker 100.

[0051] In the present application, a movable part 30 is provided in the shell 10 of the speaker 100. The movable part 30 is transversely separated in the accommodating chamber 13 to divide the accommodating chamber 13 into a rear chamber 131 and a buffer chamber 132. The rear chamber 131 and the buffer chamber 132 are isolated from each other. The speaker 20 is connected to the rear chamber 131 through the pressure relief hole 22. The shell 10 is provided with a sound pickup hole 14 connecting the buffer chamber 132 and the outside world. The microphone 40 is provided in the buffer chamber 132 to pick up external sounds through the sound pickup hole 14. That is, in the solution of the present application, the microphone 40 and the speaker 20 are respectively accommodated in different chambers, which reduces the influence of the sound waves of the speaker 20 on the microphone 40 and improves the sound pickup effect of the microphone 40.

[0052] Furthermore, the microphone 40 is arranged in the buffer cavity 132 and blocks the sound pickup hole 14 connecting the buffer cavity 132 and the outside, so that the buffer cavity 132 and the rear cavity 131 are both closed chambers. At the same time, the movable part 30 can be movably arranged in the accommodating cavity 13 to adjust the volume of the rear cavity 131 and the buffer cavity 132 during the activity. Among them, the movable part 30 can be an elastic diaphragm or a rigid part. When the movable part 30 is an elastic diaphragm, the edge of the elastic diaphragm is fixedly connected to the cavity wall of the accommodating cavity 13 so that the elastic diaphragm is horizontally separated in the accommodating cavity 13. When the elastic diaphragm is driven by the diaphragm 21 to vibrate and deform, the volume of the rear cavity 131 and the buffer cavity 132 can be adjusted. When the movable part 30 is a rigid part, which can be a plate or other shaped structures, it is only necessary to divide the accommodating chamber 13 into a rear chamber 131 and a buffer chamber 132. At this time, the movable part 30 is slidably arranged in the accommodating chamber 13 as a whole, so that the diaphragm 21 drives the movable part 30 to move as a whole in the accommodating chamber 131, thereby adjusting the volume of the rear chamber 131 and the buffer chamber 132.

[0053] Taking the direction of sound radiated from the front of the speaker 20 as the front, when the speaker 20 is energized to make the diaphragm 21 move forward, the volume of the rear cavity 131 increases and the pressure of the rear cavity 131 decreases, thereby generating a suction force on the movable part 30 to drive the movable part 30 to move forward, so as to slow down the volume and pressure changes of the rear cavity 131, thereby reducing the suction force of the rear cavity 131 that hinders the forward movement of the diaphragm 21, and further reducing the mechanical energy used to counteract the suction force of the rear cavity 131 when the electrical signal drives the diaphragm 21 to move forward, reducing the mechanical energy loss, and allowing more mechanical energy to be used to drive the diaphragm 21 to move forward. That is, when the movable part 30 moves forward with the diaphragm 21, it avoids excessive pressure changes in the rear cavity 131, so that the diaphragm 21 can fully move forward under the drive of the electrical signal, thereby improving the electroacoustic conversion efficiency and electroacoustic conversion sensitivity of the speaker 20.

[0054] At the same time, when the movable part 30 vibrates forward with the diaphragm 21, the volume in the buffer chamber 132 gradually increases, causing the pressure to gradually decrease, thereby generating a gradually increasing suction force applied to the movable part 30, causing the forward movement speed of the movable part 30 to gradually slow down. When the diaphragm 21 moves to the maximum amplitude, the movable part 30 also stops moving. At this time, the suction force of the buffer chamber 132 applied to the movable part 30 is the greatest, which can make the movable part 30 quickly reset backward to increase the volume of the rear chamber 131 and reduce the pressure in the rear chamber 131, thereby generating a suction force applied to the diaphragm 21 to drive the diaphragm 21 to quickly reset. For a traditional closed speaker, during the process of the diaphragm 21 resetting backwards, the volume of the rear cavity 131 continues to decrease, and the suction force of the rear cavity 131 on the diaphragm 21 also gradually decreases; however, in the present application, since the movable part 30 moves backwards when the diaphragm 21 resets, the volume of the rear cavity 131 increases and the pressure decreases, thereby providing a greater suction force to the diaphragm 21 to drive the diaphragm 21 to reset faster, so that the diaphragm 21 responds to the subsequent electrical signal in time to vibrate and make sound, thereby improving the transient characteristics of the speaker 100.

[0055] Similarly, when the diaphragm 21 moves backward in response to an electrical signal, the volume of the rear cavity 131 decreases, causing the pressure of the rear cavity 131 to increase, thereby generating a repulsive force on the movable part 30, driving the movable part 30 to move backward, so as to slow down the changes in the volume and pressure of the rear cavity 131, thereby reducing the repulsive force of the rear cavity 131 that hinders the diaphragm 21 from moving backward, and further reducing the mechanical energy used to counteract the repulsive force of the rear cavity 131 when the electrical signal drives the diaphragm 21 to move backward, reducing the mechanical energy loss, and allowing more mechanical energy to be used to drive the diaphragm 21 to move backward. That is, when the movable part 30 moves backward with the diaphragm 21, it avoids excessive pressure changes in the rear cavity 131, so that the diaphragm 21 can fully move backward under the drive of the electrical signal, thereby improving the electroacoustic conversion efficiency and electroacoustic conversion sensitivity of the speaker 20.

[0056] At the same time, when the movable part 30 moves backward with the diaphragm 21, the volume of the buffer chamber 132 gradually decreases, so that the pressure of the buffer chamber 132 gradually increases, thereby generating a gradually increasing repulsive force applied to the movable part 30, so that the speed of the movable part 30 moving backward gradually slows down. When the diaphragm 21 moves to the maximum amplitude, the movable part 30 also stops moving. At this time, the repulsive force of the buffer chamber 132 on the movable part 30 is the largest, which can make the movable part 30 quickly reset forward to reduce the volume of the rear chamber 131 and increase the pressure of the rear chamber 131, thereby generating a repulsive force applied to the diaphragm 21 to drive the diaphragm 21 to reset quickly. For a traditional closed speaker, during the process of the diaphragm 21 resetting forward, the volume of the rear cavity 131 continues to increase, and the repulsive force of the rear cavity 131 on the diaphragm 21 gradually decreases; however, in the present application, since the movable part 30 moves forward when the diaphragm 21 resets, the volume of the rear cavity 131 decreases and the pressure increases, thereby providing a greater repulsive force to the diaphragm 21 to drive the diaphragm 21 to reset faster, so that the diaphragm 21 responds to the subsequent electrical signal in time to vibrate and make sound, thereby improving the transient characteristics of the speaker 100.

[0057] It is not difficult to understand that, compared with the traditional closed speaker 100, the speaker 100 of the present application can drive the movable part 30 to reciprocate when the diaphragm 21 vibrates to slow down the volume and pressure changes of the rear cavity 131, so that the pressure change of the rear cavity 131 becomes smaller, thereby reducing the resistance of the rear cavity 131 to the movement of the diaphragm 21 due to the pressure change when the diaphragm 21 senses the movement of the electrical signal, thereby reducing the loss of the mechanical energy obtained by the diaphragm 21 in resisting the pressure resistance of the rear cavity 131, so that more mechanical energy can be used to drive the diaphragm 21 to vibrate and sound, avoiding the large pressure change of the rear cavity 131 affecting the vibration of the diaphragm 21, and improving the sound-to-electric conversion efficiency of the speaker 100. At the same time, because the movable part 30 changes the pressure in the buffer cavity 132 when it moves, and generates a restoring force that drives the movable part 30 and the diaphragm 21 to reset, the diaphragm 21 can be quickly reset after the movement of the induced electrical signal to respond to the subsequent electrical signal to vibrate and sound, so that the speaker 100 has better transient characteristics.

[0058] When the speaker 100 is not working, since the rear cavity 131 and the buffer cavity 132 are both closed cavities, the pressure of the rear cavity 131 and the pressure of the buffer cavity 132 remain balanced, preventing the movable part 30 from moving toward the buffer cavity 132 due to external forces such as vibration or its own gravity, thereby maintaining the position and structure of the movable part 30 and the diaphragm 21 stable.

[0059] Therefore, it can be understood that the technical solution of the present invention is to simultaneously set a movable part 30 in the shell 10 of the sound box 100 to separate the accommodating chamber 13 in the shell 10 into a rear chamber 131 and a buffer chamber 132, so that the pressure relief hole 22 of the speaker 20 is connected to the rear chamber 131, and the microphone 40 is set in the buffer chamber 132 to pick up external sounds through the sound pickup hole 14. In this way, the microphone 40 and the speaker 20 are isolated from each other by the movable part 30, reducing the influence of the sound waves of the speaker 20 on the microphone 40, and improving the sound pickup effect of the microphone 40.

[0060] At the same time, the microphone 40 blocks the sound pickup hole 14 connecting the buffer cavity 132 and the outside, so that the rear cavity 131 and the buffer cavity 132 are both closed cavities, and the movable member 30 can move in the accommodating cavity 13. In this way, when the speaker 20 is powered on, the diaphragm 21 vibrates and makes a sound. Since the speaker 20 is connected to the rear cavity 131 through the pressure relief hole 22, when the diaphragm 21 vibrates, the pressure in the rear cavity 131 will change to drive the movable member 30 to move accordingly, so as to slow down the pressure change in the rear cavity 131, thereby reducing the loss of mechanical energy obtained by the diaphragm 21 in the process of resisting the pressure change of the rear cavity 131, so that more mechanical energy can be used to drive the diaphragm 21 to vibrate and make a sound, avoiding excessive pressure change in the rear cavity 131, resulting in a reduction in the amplitude of the diaphragm 21, and improving the electroacoustic conversion efficiency and sensitivity of the speaker 100. That is, the pressure change in the rear cavity 131 is transferred to the buffer cavity 132 to keep the pressure in the rear cavity 131 stable, avoiding the phenomenon that the pressure change in the rear cavity 131 hinders the movement of the diaphragm 21, so as to improve the electroacoustic conversion efficiency and sensitivity of the speaker 100.

[0061] Furthermore, when the movable member 30 moves toward the side of the rear cavity 131, the pressure in the buffer cavity 132 decreases, thereby generating a suction force that hinders the movable member 30 from moving toward the rear cavity 131. When the movable member 30 moves to the maximum amplitude along with the diaphragm 21, the suction force applied by the buffer cavity 132 to the movable member 30 is maximum, so that the movable member 30 is quickly reset and the diaphragm 21 is driven to quickly reset, so that the diaphragm 21 can promptly respond to the subsequent changes in the electrical signal to vibrate and make sounds; when the movable member 30 moves toward the side of the buffer cavity 132, the pressure in the buffer cavity 132 increases, thereby generating a repulsive force that hinders the movable member 30 from moving toward the side of the buffer cavity 132. When the movable member 30 moves to the maximum amplitude along with the diaphragm 21, the force applied by the buffer cavity 132 to the movable member 30 is maximum, so that the movable member 30 is quickly reset under the repulsive force of the buffer cavity 132 and the diaphragm 21 is driven to quickly reset, so that the diaphragm 21 can promptly respond to the subsequent changes in the electrical signal to vibrate and make sounds, thereby making the speaker 100 have better transient characteristics.

[0062] That is, the present application isolates the microphone 40 and the speaker 20 by setting a movable part 30 in the shell 10, thereby improving the sound pickup effect of the microphone 40, while improving the electroacoustic conversion efficiency and sensitivity of the speaker 100, and making the speaker 100 have better transient characteristics.

[0063] Please refer to Figure 2 In some embodiments of the speaker 100 of the present invention, the periphery 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 sink 18 , and the sound pickup hole 14 is opened on the sink 18 .

[0064] In this embodiment, the bottom surface of the shell 10 corresponding to the bottom wall of the buffer cavity 132 is recessed toward one side of the buffer cavity 132 to form a sink 18, and the sink 18 is located at the periphery of the bottom surface of the shell 10; at this time, when the speaker 100 is placed on the supporting surface, the surface of the sink 18 is higher than the supporting surface and is spaced apart from the supporting surface, and the sound pickup hole 14 is opened in the sink 18 and passes through the buffer cavity 132 to prevent the supporting surface from covering the sound pickup hole 14 when the speaker 100 is placed on the supporting surface, so as to ensure that the sound can be received by the microphone 40 through the sound pickup hole 14, and the sound pickup hole 14 is arranged toward the supporting surface. Such an arrangement can reduce the risk of external debris entering the sound pickup hole 14 and causing the sound pickup hole 14 to be blocked.

[0065] Please refer to Figure 3 In some embodiments of the speaker 100 of the present invention, the circuit board 50 of the speaker 100 is disposed in the buffer cavity 132, the sound pickup hole 14 passes 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.

[0066] The speaker 100 is provided with a circuit board 50, on which components such as a control chip, an antenna, Bluetooth, and a storage chip are provided for data transmission and sound-to-electric conversion. In this embodiment, the circuit board 50 is provided in the buffer cavity 132, and the sound pickup hole 14 penetrates the cavity wall of the buffer cavity 132 and the circuit board 50. At the same time, the microphone 40 is provided on the side of the circuit board 50 away from the cavity wall, and the sound pickup hole 14 is blocked, so that the microphone 40 can pick up sound and the buffer cavity 132 is a closed cavity by blocking the sound pickup hole 14 by the microphone 40, so that the speaker 100 has better transient characteristics.

[0067] Furthermore, the wire 23 of the speaker 20 passes through the movable member 30 to be electrically connected to the circuit board 50 to receive the electrical signal transmitted by the circuit board 50, thereby controlling the diaphragm 21 of the speaker 20 to vibrate and produce sound.

[0068] It should be noted that, in this embodiment, the wire 23 of the speaker 20 is passed through the movable part 30, so that the wire 23 is fixed in the accommodating cavity 13, and slides relative to the movable part 30 when the movable part 30 vibrates. In order to maintain the sealing and isolating effect of the movable part 30 on the rear cavity 131 and the buffer cavity 132, a lubricating layer can be provided between the wire 23 and the movable part 30 to reduce the friction when the wire 23 and the movable part 30 move relative to each other, so that the rear cavity 131 and the buffer cavity 132 are kept isolated. Of course, the wire 23 can be fixed on the movable part 30, and the length of the wire 23 can be appropriately extended so that the wire 23 has a certain movable length in the rear cavity 131 and the buffer cavity 132, so that the wire 23 can reciprocate with the movable part 30, and the wire 23 is prevented from being damaged due to being tight during the vibration process.

[0069] Please refer to Figure 3 and Figure 4 In some embodiments of the speaker 100 of the present invention, the speaker 100 further includes a spacer 60, which is sandwiched between the circuit board 50 and the wall of the buffer cavity 132 so that the circuit board 50 is spaced apart from the wall, and the pickup hole 14 passes through the wall of the buffer cavity 132, the spacer 60 and the circuit board 50.

[0070] In this embodiment, the circuit board 50 is raised by the spacer 60, so that the circuit board 50 is spaced from the wall of the buffer cavity 132, so as to form a heat dissipation space between the circuit board 50 and the wall of the buffer cavity 132, accelerate the heat dissipation of the circuit board 50, and avoid the accumulation of heat in the circuit board 50, which causes the circuit board 50 to be too high in temperature and affects the performance of components such as the microphone 40 on the circuit board 50. Further, in order to form a closed cavity in the buffer cavity 132, so that the movable part 30 can generate a pressure change when the diaphragm 21 vibrates, drive the movable part 30 to quickly reset and improve the transient characteristics of the speaker 20, in this embodiment, the sound pickup hole 14 penetrates the wall of the buffer cavity 132, the spacer 60 and the circuit board 50, so that the microphone 40 can pick up sound through the sound pickup hole 14, which also improves the heat dissipation effect of the circuit board 50, and at the same time, maintains the good transient characteristics of the speaker 100.

[0071] Please refer to Figure 2 and Figure 5 In some embodiments of the speaker 100 of the present invention, a plurality of the microphones 40 are provided, and the plurality of microphones 40 are arranged at intervals along the circumference of the speaker 100 .

[0072] In this embodiment, a plurality of microphones 40 are provided in the speaker 100, so that the plurality of microphones 40 are arranged at intervals along the circumference of the speaker 100. 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 confirm each other to correctly judge user commands, thereby improving the sound pickup accuracy of the speaker 100.

[0073] Further, in some embodiments, a corresponding sound pickup algorithm is provided in the control system of the speaker 100. It is understandable that the multiple microphones 40 are arranged at intervals along the circumference of the speaker 100, and the microphones 40 at different positions pick up the sound waves at different times, judge the sound source directions differently, and the existence of obstacles may cause the sound waves to change in phase and frequency during the transmission process. The sound pickup algorithm of the present application can perform weighted processing on the sound waves picked up by each microphone 40, and according to the corresponding parameters such as the sound source distance, the sound source direction, the sound source height, and the frequency of the sound wave pre-set in the program, and according to the sound source parameters picked up by each microphone 40, different transfer functions are called to perform signal weighting on the phase and amplitude of the sound waves received by each microphone 40, so as to ensure that the information picked up by multiple microphones 40 on the same sound source is the most accurate and simultaneous.

[0074] Furthermore, in some embodiments, a sink 18 is provided on the bottom surface of the housing 10, and the sound pickup hole 14 is opened at the sink 18. In this case, the sink 18 can be arranged around the circumference of the speaker 100, and multiple sound pickup holes 14 are distributed on the sink 18 at intervals along the circumference of the speaker 100, and each microphone 40 blocks a corresponding sound pickup hole 14 to keep the buffer cavity 132 closed. In this way, the sound pickup hole 14 is arranged toward the supporting surface. In this case, the influence of signal superposition and interference caused by the reflection of the sound on the supporting surface on the sound pickup effect of the microphone 40 is considered. The sound pickup information caused by the reflection of the supporting surface can be subtracted in the sound pickup algorithm to improve the sound pickup accuracy of the speaker 100.

[0075] In some embodiments of the speaker 100 of the present invention, the sound pickup hole 14 is opened on the side wall of the buffer cavity 132 .

[0076] With such a configuration, the sound pickup hole 14 is directly exposed to the outside world and will not be blocked, which is convenient for the speaker 20 to pick up external sounds. In some embodiments, the bottom wall of the buffer cavity 132 is provided with sound-absorbing cotton, which can absorb part of the pressure difference generated in the buffer cavity 132, and avoid the excessive change of the pressure difference in the buffer cavity 132 affecting the movement of the movable part 30. At the same time, the configuration of the sound-absorbing cotton 90 can also absorb the sound waves transmitted to the accommodating cavity 13 when the diaphragm 21 of the speaker 20 vibrates and the noise when the movable part 30 moves, and avoid the sound waves repeatedly reflecting in the accommodating cavity 13 to produce resonance, resulting in unclear sound quality. The configuration of the sound-absorbing cotton can effectively improve the sound quality of the speaker 100. At this time, the sound pickup hole 14 is opened on the side wall of the buffer cavity 132, so that the configuration of the sound-absorbing cotton and the configuration of the sound pickup hole 14 do not affect each other, and the sound-absorbing cotton can be prevented from blocking the sound pickup hole 14 and affecting the transmission of external sounds into the buffer cavity 132.

[0077] Please refer to Figure 3 In some embodiments of the speaker 100 of the present invention, the speaker 100 further includes a dustproof foam 70 , and the dustproof foam 70 covers the sound pickup hole 14 .

[0078] In this embodiment, a dustproof foam 70 is provided on the sound pickup hole 14. The dustproof foam 70 has a plurality of small holes, which does not affect the transmission of sound waves through the sound pickup hole 14 to the microphone 40 for collection by the microphone 40, and can also effectively prevent dust and block foreign objects from entering the sound pickup hole 14, thereby preventing foreign objects from blocking the sound pickup hole 14. The dustproof foam 70 can cover the outer opening of the sound pickup hole 14 to facilitate replacement of the dustproof foam 70, or can be filled in the sound pickup hole 14, or can be arranged in the buffer cavity 132 to cover the inner opening of the sound pickup hole 14 in the following embodiment.

[0079] Please refer to Figure 3 In some embodiments of the speaker 100 of the present invention, the dustproof foam 70 is disposed in the buffer cavity 132 .

[0080] In this embodiment, the dustproof foam 70 is disposed in the buffer cavity 132 to prevent the dustproof foam 70 from being exposed to the outside, thereby reducing the risk of damage to the dustproof foam 70 and increasing the service life of the dustproof foam 70 .

[0081] In some embodiments, a circuit board 50 and a spacer 60 are provided in the speaker 100, and the sound pickup hole 14 passes through the spacer 60 and the circuit board 50. At this time, the dust-proof foam 70 can be sandwiched between the spacer 60 and the bottom wall of the buffer cavity 132, or the dust-proof foam 70 can be sandwiched between the spacer 60 and the circuit board 50, and also cover the position of the sound pickup hole 14 to prevent foreign objects from entering the sound pickup hole 14.

[0082] Preferably, the dustproof foam 70 is attached to the bottom wall of the buffer cavity 132 by bonding, which is convenient for disassembly and assembly.

[0083] Please refer to Figure 3 In some embodiments of the speaker 100 of the present invention, the speaker 100 further includes an adjustment mechanism 80 , and the adjustment mechanism 80 is disposed in the accommodating cavity 13 for elastically supporting the movable part 30 .

[0084] It can be understood that the technical solution of the present application, through the movement of the movable member 30, slows down the pressure change in the rear cavity 131 when the diaphragm 21 vibrates, so that the pressure change process of the rear cavity 131 is slowed down, and the pressure difference of the rear cavity 131 is reduced, thereby reducing the loss of mechanical energy obtained by the diaphragm 21 in the process of resisting the pressure change of the rear cavity 131, so that more mechanical energy can be used to drive the diaphragm 21 to vibrate and sound, avoiding the large pressure change in the rear cavity 131 affecting the vibration of the diaphragm 21, and improving the sound-to-electricity conversion efficiency of the speaker 100. At the same time, because the pressure in the buffer cavity 132 changes when the movable member 30 moves, so as to provide a restoring force to drive the movable member 30 and the diaphragm 21 to reset, the diaphragm 21 can be quickly reset to respond to the subsequent electrical signal to vibrate and sound, so that the speaker 100 has better transient characteristics. Furthermore, in the present embodiment, an adjustment mechanism 80 is also provided in the accommodating cavity 13 of the shell 10. The adjustment mechanism 80 is provided in the accommodating cavity 13. The adjustment mechanism 80 may be but is not limited to an elastic member, a magnetic component in the following embodiment, or a combination of the aforementioned two mechanisms. If the adjustment mechanism 80 is an elastic member, 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 to elastically support the movable member 30.

[0085] With such arrangement, when the movable part 30 moves toward one side of the buffer cavity 132 driven by the diaphragm 21, the adjusting mechanism 80 generates an elastic repulsive force to cooperate with the repulsive force of the buffer cavity 132 to slow down the movement of the movable part 30; when the movable part 30 moves to the maximum amplitude, the elastic force of the adjusting mechanism 80 and the repulsive force of the buffer cavity 132 cooperate to drive the movable part 30 to quickly reset and drive the diaphragm 21 to quickly reset, so that the diaphragm 21 vibrates and makes sound in timely response to the subsequent electrical signal. When the movable part 30 moves with the diaphragm 21 toward the side away from the buffer cavity 132, the following situation occurs: if the adjustment mechanism 80 is a magnetic repulsion structure (i.e., magnetic parts are respectively provided on one side of the buffer cavity and on the movable part, and the two magnetic parts repel each other) or a compression spring, the repulsive force of the adjustment mechanism 80 on the movable part 30 during the movement away from the buffer cavity 132 is reduced. At this time, it is mainly the force applied to the movable part 30 by the pressure change of the rear cavity 131 and the buffer cavity 132 that slows down the movement of the movable part 30, and drives the movable part 30 after the movable part 30 moves to the maximum amplitude. Rapid reset; if the adjusting mechanism 80 is an elastic member and the two ends of the elastic member are respectively connected to the movable member 30 and the bottom wall of the buffer chamber 132, when the movable member 30 moves toward the side away from the buffer chamber 132, the elastic tension of the adjusting mechanism 80 and the suction force of the buffer chamber 132 work together to slow down the movement of the movable member 30. When the movable member 30 moves to the maximum amplitude, the elastic tension of the adjusting mechanism 80 and the suction force of the buffer chamber 132 work together to drive the movable member 30 to reset quickly and drive the diaphragm 21 to reset quickly, so that the diaphragm 21 responds to the subsequent electrical signal in time to vibrate and make sound.

[0086] In addition, when the speaker 100 is not working, the adjustment mechanism 80 elastically supports the movable part 30, and the superposition of the pressure of the buffer chamber 132 and the elastic force of the adjustment mechanism 80 maintains a balanced state with the pressure of the rear chamber 131, so that the movable part 30 maintains a fixed position and shape, so as to prevent the movable part 30 from moving to one side of the buffer chamber 132 due to external forces such as vibration or its own gravity, thereby maintaining the position and structural stability of the movable part 30 and the diaphragm 21.

[0087] Please refer to Figure 5 In some embodiments of the speaker 100 of the present invention, the adjustment mechanism 80 includes:

[0088] A first magnetic member 81, the first magnetic member 81 is disposed on the movable member 30; and

[0089] The second magnetic member 82 is disposed in the buffer cavity 132 and spaced apart 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 first magnetic member 81 that are disposed opposite to each other are the same.

[0090] In this embodiment, the adjustment mechanism 80 is a magnetic component, the first magnetic component 81 of the magnetic component is arranged on the movable component 30, the second magnetic component 82 of the magnetic component is arranged in the buffer cavity 132, and the second magnetic component 82 has the same magnetic pole as the first magnetic component 81, so that the first magnetic component 81 and the second magnetic component 82 repel each other, and the magnetic repulsion between the first magnetic component 81 and the second magnetic component 82 can prevent the first magnetic component 81 and the movable component 30 from moving toward the side of the buffer cavity 132, so that when the movable component 30 moves backward with the diaphragm 21, the movable component 30 and the diaphragm 21 are driven to quickly reset, compared with setting the second magnetic component 82 on the side of the rear cavity 131 to the first magnetic component 81 provides a magnetic attraction, and the second magnetic member 82 is arranged in the buffer cavity 132 to apply a magnetic repulsion to the first magnetic member 81, so that when the movable member 30 moves toward one side of the buffer cavity 132, the magnetic force provided by the magnetic component to the movable member 30 gradually increases, so that when the movable member 30 reaches the maximum amplitude, it can be subjected to the maximum repulsive force of the buffer cavity 132 and the maximum magnetic force of the magnetic component, so that the movable member 30 can be quickly reset under the action of the repulsive force of the buffer cavity 132 and the magnetic force of the magnetic component and drive the diaphragm 21 to quickly reset, so that the diaphragm 21 can respond to the subsequent changes in the electrical signal in time to vibrate and make sound, so that the speaker 100 has better transient characteristics.

[0091] It should be noted that, in this embodiment, the second magnetic member 82 is disposed in the buffer cavity 132 and repels the first magnetic member 81. When the movable member 30 moves toward the side of the rear cavity 131 along with the diaphragm 21, the following situations exist: when the movable member 30 moves toward the side of the rear cavity 131, the first magnetic member 81 and the second magnetic member 82 are always in a state of repulsion; before the movable member 30 moves toward the rear cavity 131 to the maximum amplitude, the first magnetic member 81 and the second magnetic member 82 are too far apart and no longer repel each other; when the movable member 30 moves toward the rear cavity 131 to the maximum amplitude, the first magnetic member 81 and the second magnetic member 82 just exceed the magnetic field range between each other. In a preferred embodiment, the first magnetic member 81 and the second magnetic member 82 can be made to be always in a repulsive state when the movable member 30 moves with the diaphragm 21. At this time, when the movable member 30 moves toward the side of the rear cavity 131, it is always driven by the pressure change of the rear cavity 131 and the magnetic repulsion of the magnetic component, so as to quickly respond to the vibration of the diaphragm 21, quickly slow down and reduce the pressure change of the rear cavity 131, and avoid the excessive pressure difference in the rear cavity 131 affecting the vibration of the diaphragm 21; at the same time, when the movable member 30 resets to the side of the buffer cavity 132, it is avoided that the movable member 30 is suddenly subjected to the magnetic repulsion of the magnetic component during the reset process, resulting in a step-like change in the force acting on the movable member 30, affecting the stability of the movement process of the movable member 30.

[0092] Please refer to Figure 3In some embodiments of the speaker 100 of the present invention, the first magnetic member 81 is disposed on a surface of the movable member 30 facing the buffer cavity 132 and is spaced apart from the second magnetic member 82 .

[0093] In this embodiment, the first magnetic member 81 is disposed on a surface of the movable member 30 facing the buffer cavity 132, and is spaced apart from the second magnetic member 82, so as to cooperate with the second magnetic member 82 to prevent the movable member 30 from moving toward the buffer cavity 132. In this way, the first magnetic member 81 can be prevented from colliding with the speaker 20 when the movable member 30 moves, thereby improving the safety of use.

[0094] Furthermore, in some embodiments, the movable part 30 may be made of magnetic shielding material to prevent the magnetic force of the first magnetic part 81 and the second magnetic part 82 from affecting the magnetic field in the speaker 20, thereby preventing the diaphragm 21 from vibrating and radiating sound, thereby ensuring that the speaker 20 has better sound effects.

[0095] Please refer to Figure 3 In some embodiments of the speaker 100 of the present invention, the microphone 40 is disposed on the circuit board 50, and the circuit board 50 is stacked on the bottom wall of the buffer cavity 132, and the second magnetic member 82 is spaced apart from the circuit board 50 and the microphone 40 along the movement direction of the movable member 30.

[0096] This arrangement can prevent the movable part 30 from colliding with the microphone 40 and the circuit board 50 when moving with the diaphragm 21 toward the buffer chamber 132, thereby improving the safety of the speaker 100 during use and ensuring the performance stability and service life of the speaker 100.

[0097] Please refer to Figure 6 In some embodiments of the speaker 100 of the present invention, a plurality of limiting steps 17 are protruding from the bottom wall of the buffer cavity 132 , and the second magnetic member 82 is supported on the plurality of limiting steps 17 .

[0098] The technical solution of the present application is to set up a magnetic component and make the second magnetic part 82 apply a magnetic repulsion force to the first magnetic part 81 to prevent the movable part 30 from moving toward the side of the buffer cavity 132; it can be understood that the magnetic repulsion between the second magnetic part 82 and the first magnetic part 81 interacts with each other, and the first magnetic part 81 also applies a magnetic repulsion force to the second magnetic part 82; in this embodiment, by protruding a plurality of limiting steps 17 on the bottom wall of the buffer cavity 132 for supporting the second magnetic part 82, it is possible to prevent the second magnetic part 82 from moving away from the first magnetic part 81 under the action of the magnetic repulsion of the first magnetic part 81, thereby improving the position stability of the second magnetic part 82 in the buffer cavity 132, and also preventing the second magnetic part 82 from moving, resulting in a reduction in the magnetic repulsion force applied by the second magnetic part 82 to the first magnetic part 81 and the movable part 30, resulting in the movable part 30 being unable to reset quickly, affecting the transient characteristics of the speaker 20.

[0099] In some embodiments of the speaker 100 of the present invention, the movable member 30 is a rigid member and is slidably disposed in the accommodating cavity 13 to reciprocate with the vibration of the diaphragm 21 of the speaker 20 .

[0100] In this embodiment, the movable member 30 is slidably disposed in the accommodating chamber 13 as a whole, so that the diaphragm 21 drives the movable member 30 to move as a whole, thereby adjusting the volume of the rear chamber 131 and the buffer chamber 132. At the same time, the movable member 30 is a rigid member, which can be but not limited to plastic, metal or ceramic materials, and can be plate-shaped or in other shapes. It is only necessary to separate the accommodating chamber 13 into the rear chamber 131 and the buffer chamber 132. The rigid movable member 30 is deformed less under the action of external force, so that the pressure change of the rear chamber 131 and the buffer chamber 132 is mainly used to drive the movable member 30 to slide back and forth in the accommodating chamber 13, thereby reducing the mechanical energy loss of the movable member 30 during the movement.

[0101] Combined with reference Figure 3 and Figure 5 In some embodiments of the speaker 100 of the present invention, the movable part 30 is provided with a guide hole, and a guide column 15 is provided in the shell 10. The guide column 15 extends along the movement direction of the movable part 30 and passes through the guide hole.

[0102] In the technical solution of the above-mentioned embodiment, the movable part 30 is slidably arranged in the accommodating cavity 13 as a whole to adjust the volume of the rear cavity 131 and the buffer cavity 132, so as to improve the electroacoustic conversion efficiency and sensitivity of the sound box 100. In this embodiment, a guide structure is provided in the sound box 100, and the guide structure includes a guide column 15 and a guide hole that cooperate with each other, wherein a guide hole is correspondingly provided on the movable part 30, and the guide column 15 is provided in the shell 10 and extends along the movement direction of the movable part 30, and the guide column 15 is passed through the guide hole, so that the movable part 30 slides along the guide column 15, and the stability of the movement process of the movable part 30 is improved. Of course, the guide column 15 can also be provided on the movable part 30, and a connecting part is correspondingly provided in the accommodating cavity 13, and a guide hole is provided on the connecting part, so that the guide column 15 is passed through the guide hole so that the movable part 30 slides along the guide column 15, and the stability of the movement process of the movable part 30 is improved. Of course, the guide column 15 can also be provided on the movable part 30, and a connecting part is correspondingly provided in the accommodating cavity 13, and a guide hole is provided on the connecting part, so that the guide column 15 is passed through the guide hole so that the movable part 30 slides along the guide column 15, and the stability of the movement process of the movable part 30 is improved.

[0103] Please refer to Figure 6 In some embodiments of the speaker 100 of the present invention, the guide column 15 is disposed on the side wall of the accommodating cavity 13 , and the guide hole is opened at the edge of the movable part 30 .

[0104] In this embodiment, the guide hole is opened on the movable part 30 and is located at the edge of the movable part 30, and a guide column 15 is correspondingly provided on the cavity wall of the accommodating cavity 13. Such a configuration can reduce the contact area between the guide column 15 and the guide hole, thereby reducing the contact area between the movable part 30 and the shell 10, reducing the friction between the movable part 30 and the shell 10 during the movement, and making the sliding process of the movable part 30 in the shell 10 smoother.

[0105] Please refer to Figure 5 and Figure 6 In some embodiments of the speaker 100 of the present invention, there are multiple guide holes, and the multiple guide holes are arranged around the circumference of the movable part 30. There are multiple guide columns 15, and each guide column 15 is inserted into one guide hole.

[0106] It can be understood that a guide hole and a guide column 15 that cooperate with each other form a set of guide structures. By setting multiple sets of guide structures in the speaker 100, the stability of the movement process of the movable part 30 can be further improved.

[0107] In some embodiments of the speaker 100 of the present invention, the circumferential side wall of the movable member 30 is disposed in close contact with the cavity wall of the accommodating cavity 13;

[0108] Alternatively, a lubricating layer is provided between the circumferential side wall of the movable member 30 and the cavity wall of the accommodating cavity 13 .

[0109] The technical solution of the present application allows the movable part 30 to be horizontally separated in the accommodating chamber 13 of the shell 10, so as to separate the accommodating chamber 13 into a rear chamber 131 and a buffer chamber 132 which are isolated from each other, and allows the movable part 30 to slide back and forth in the accommodating chamber 13 when the diaphragm 21 moves, so as to prevent the pressure change in the rear chamber 131 from affecting the acoustic-to-electric conversion efficiency and sensitivity of the speaker 20. It can be understood that during the sliding process of the movable part 30, the movable part 30 needs to always isolate the rear chamber 131 and the buffer chamber 132, that is, to ensure that the movable part 30 has good sealing during the sliding process. At this time, the movable part 30 and the shell 10 can be completely fitted to meet the sealing requirements. In order to reduce the friction between the movable part 30 and the wall of the accommodating chamber 13 during the sliding process, the circumferential side wall of the movable part 30 and the wall of the accommodating chamber 13 can maintain a high degree of smoothness. Alternatively, a lubricating layer is provided between the circumferential side wall of the movable part 30 and the wall of the accommodating chamber 13, which may be but is not limited to lubricating oil and grease. The grease material can effectively fill the gap between the circumferential side wall of the movable part 30 and the wall of the accommodating chamber 13, has a high sealing ability, and can also reduce the friction between the movable part 30 and the wall of the accommodating chamber 13 during the sliding process, so that the movable part 30 can maintain better sealing during the sliding process and can also make the sliding of the movable part 30 smoother.

[0110] Please refer to Figure 3 and Figure 5 In some embodiments of the speaker 100 of the present invention, the housing 10 includes:

[0111] An upper shell 11, wherein the upper shell 11 is provided with the sound outlet 111, and the speaker 20 is disposed in the upper shell 11; and

[0112] The lower shell 12 and the upper shell 11 cover each other to enclose the accommodating cavity 13 , and the movable member 30 is movably disposed in the lower shell 12 .

[0113] In this embodiment, the housing 10 is configured as a split upper housing 11 and a lower housing 12, wherein the upper housing 11 and the lower housing 12 cover each other to enclose a receiving cavity 13. In this embodiment, an installation space is formed in both the upper housing 11 and the lower housing 12, and the upper housing 11 is also provided with the aforementioned sound outlet 111. At this time, the speaker 20 is installed in the installation space of the upper housing 11 and is aligned with the sound outlet 111 so that the sound can be radiated outward after the upper housing 11 and the lower housing 12 are covered; and the movable part 30 is arranged in the lower housing 12. In this configuration, the speaker 20 and the movable part 30 in the sound box 100 can be separated from the microphone 40 by only disassembling the upper housing 11 and the lower housing 12, so that the disassembly and assembly of the sound box 100 is more convenient. In this embodiment, the connection method between the upper housing 11 and the lower housing 12 can be, but not limited to, threaded connection, snap connection, magnetic attraction, bonding, or a combination of two or more of the aforementioned connection methods, which is not specifically limited here.

[0114] Combined with reference Figure 3 and Figure 6 In some embodiments of the speaker 100 of the present invention, a plurality of limit posts 16 are protruding from the opening of the lower shell 12, and the limit posts 16 are arranged at circumferential intervals along the opening. The upper shell 11 covers the opening of the lower shell 12, and the limit posts 16 abut against the inner wall of the upper shell 11.

[0115] Such a configuration can increase the contact area between the upper shell 11 and the lower shell 12, and at the same time enable the upper shell 11 to engage with a number of limit columns 16, thereby improving the connection stability between the upper shell 11 and the lower shell 12, and also facilitating positioning when assembling the upper shell 11 and the lower shell 12, thereby improving the installation convenience of the speaker 100.

[0116] Similarly, in some embodiments, the opening of the upper shell 11 is protruded with a plurality of limit posts 16, and the limit posts 16 are arranged at circumferential intervals along the opening. The lower shell 12 covers the opening of the upper shell 11, and the limit posts 16 abut against the inner wall of the lower shell 12, thereby increasing the contact area between the upper shell 11 and the lower shell 12. At the same time, the upper shell 11 is engaged with the limit posts 16, thereby improving the connection stability between the upper shell 11 and the lower shell 12, and facilitating positioning when the upper shell 11 and the lower shell 12 are assembled, thereby improving the installation convenience of the speaker 100.

[0117] Of course, limiting columns 16 may be provided on both the upper shell 11 and the lower shell 12 of the speaker 100 to further improve the connection stability between the upper shell 11 and the lower shell 12 .

[0118] In some embodiments, the movable part 30 is a rigid part, and a guide column 15 is provided on the side wall of the accommodating cavity 13 and passes through the movable part 30 to guide the movable part 30 to slide along the guide column 15, so that the sliding process of the movable part 30 is more stable. At this time, the limit column 16 and the guide column 15 can be provided in one piece, that is, the guide column 15 is provided on the inner wall of the lower shell 12, and the guide column 15 is extended into the upper shell 11, so that the part protruding from the lower shell 12 forms the limit column 16; or, the guide column 15 is provided on the inner wall of the upper shell 11, and the guide column 15 is extended into the lower shell 12, so that the part protruding from the upper shell 11 forms the limit column 16, which is convenient for production and processing.

[0119] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A sound box, characterized in that: include: A shell body, wherein a receiving cavity is formed in the shell body, and the shell body is provided with a sound outlet and a sound pickup hole connecting the receiving cavity with the outside; A speaker, the speaker is accommodated in the accommodation cavity and blocks the sound outlet; A movable member, the movable member is separated from the accommodating chamber to separate the accommodating chamber into a rear chamber and a buffer chamber which are isolated from each other, the speaker is connected to the rear chamber through a pressure relief hole, the sound pickup hole is connected to the buffer chamber, and the movable member can reciprocate in the accommodating chamber to change the volume of the rear chamber; a microphone, the microphone being disposed in the buffer cavity and blocking the sound pickup hole; and An adjusting mechanism, wherein the adjusting mechanism is arranged in the accommodating cavity and is used for elastically supporting the movable part, the adjusting mechanism comprises a first magnetic part and a second magnetic part, the first magnetic part is arranged in the movable part; the second magnetic part is arranged in the buffer cavity and is located on the side of the microphone away from the bottom wall and is spaced apart from the microphone, the second magnetic part is arranged opposite to the first magnetic part, and the magnetic poles of the second magnetic part and the first magnetic part which are arranged opposite to each other have the same magnetic property.

2. The speaker as claimed in claim 1, characterized in that The circuit board of the sound box is arranged in the buffer cavity, the sound pickup hole passes through the cavity wall of the buffer cavity and the circuit board, and the microphone is arranged on a side of the circuit board away from the cavity wall of the buffer cavity and blocks the sound pickup hole.

3. The speaker as claimed in claim 2, characterized in that: The sound box also includes a spacer, which is sandwiched between the circuit board and the wall of the buffer cavity so that the circuit board and the wall of the buffer cavity are spaced apart, and the sound pickup hole passes through the wall of the buffer cavity, the spacer and the circuit board.

4. The speaker as claimed in claim 1, characterized in that There are a plurality of microphones, and the plurality of microphones are arranged at intervals along the circumference of the sound box.

5. The speaker as claimed in claim 1, characterized in that The periphery 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 opened on the sink.

6. The speaker as claimed in claim 1, characterized in that The sound pickup hole is arranged on the side wall of the buffer cavity.

7. The speaker as claimed in claim 1, characterized in that The sound box also includes dustproof foam, and the dustproof foam covers the sound pickup hole.

8. The speaker as claimed in claim 7, characterized in that: The dustproof foam is arranged in the buffer cavity.

9. The speaker as claimed in any one of claims 1 to 8, characterized in that: The movable member is a rigid member and is slidably disposed in the accommodating cavity so as to reciprocate and vibrate under the driving of the loudspeaker diaphragm.

Images