Acoustic switch and electronic device

Abstract

The application provides an acoustic switch, comprising a main body and an execution member. The main body is provided with a first opening and a second opening, and a sound guide channel is arranged in the main body and communicates the first opening and the second opening. The execution member is arranged in the sound guide channel. The execution member is configured to deform or offset in the sound guide channel to change the conduction area between the first opening and the second opening when the execution member and the main body are applied with a voltage. Or the execution member is configured to deform or offset in the sound guide channel to change the conduction area when the execution member is applied with a voltage. The acoustic switch applies the voltage to the main body and the execution member or to the execution member, and then generates a coulomb force to drive the execution member to move, without additionally increasing a driving structure such as a motor to drive the execution member to move. The acoustic switch has a small overall space occupation, and is beneficial to the miniaturization of the acoustic switch applied to electronic equipment.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of sound conduction, and in particular to an acoustic switch and an electronic device. BACKGROUND

[0002] An acoustic switch can physically open and close a sound path to adjust the size of sound or block noise to achieve a better hearing experience. The acoustic switch is applied in electronic devices, and the electronic devices are increasingly thin and have limited internal space, so there is an urgent need for miniaturization of the acoustic switch. SUMMARY

[0003] In view of the above, the present application provides a miniaturized acoustic switch and an electronic device.

[0004] In a first aspect, the present application provides an acoustic switch, which includes a main body and an execution member. The main body is provided with a first opening and a second opening, and a sound guide channel is arranged in the main body and communicates with the first opening and the second opening. The execution member is arranged in the sound guide channel. The execution member is configured to deform or offset in the sound guide channel when the execution member and the main body are applied with a voltage, so as to change the conduction area between the first opening and the second opening. Or the execution member is configured to deform or offset in the sound guide channel when the execution member is applied with a voltage, so as to change the conduction area.

[0005] The acoustic switch applies a voltage to the main body and the execution member, or to the execution member, to generate a coulomb force to drive the execution member to move, without the need to additionally increase a driving structure such as a motor to drive the execution member to move. The acoustic switch occupies a small overall space, which is conducive to the miniaturization of the acoustic switch applied in electronic devices.

[0006] In a possible implementation, the execution member is provided with a first part and a second part, the first part is connected to the main body, and the second part is conductive. The inner wall of the sound guide channel includes a first wall and a second wall located on opposite sides of the execution member, the first wall is provided with a first conductive part, and the second wall is provided with a second conductive part. In the direction from the first wall to the second wall, the first opening is located between the first conductive part and the execution member. When the second conductive part and the second part are respectively charged with different polarities of electric charge, the second part is attracted to the first conductive part and repelled by the second conductive part, and moves towards the first conductive part to block at least part of the first opening.

[0007] In the above implementation, the first conductive part and the second conductive part, and the second part of the execution member are conductive, and the first conductive part and the second conductive part on opposite sides of the second part apply a coulomb force to the execution member, so as to realize the movement of the execution member in the sound guide channel towards the first opening. By changing the blocking amount of the first opening by the second part of the execution member, the opening and closing of the acoustic switch and the adjustment and processing of sound are realized.

[0008] In a possible implementation, the first part is fixedly connected to the main body, and the second part is attracted by the first conductive part and repelled by the second conductive part to bend and deform towards the first conductive part.

[0009] In the above implementation, the second part can bend and deform, so that the second part can move towards the first opening under the action of the Coulomb force, to realize the opening and closing of the acoustic switch and the adjustment and processing of the sound.

[0010] In a possible implementation, the execution member, the first conductive part, and the second conductive part are respectively applied with voltages and charged with the same electrode charge, to reduce the shielding area of the second part to the first opening.

[0011] In the above implementation, by changing the polarity of the charge of the first conductive part, the first conductive part and the second conductive part respectively exert repulsive forces on the execution member, the execution member moves away from the first opening, and the shielding area of the second part to the first opening gradually decreases, so that the acoustic switch can be restored to the open state, and the acoustic switch omits the reset member, and the structure is simplified.

[0012] In a possible implementation, the first part is rotatably connected to the main body to drive the second part to rotate.

[0013] In the above implementation, the first part is rotatably connected to the main body, and the second part drives the first part to rotate under the action of the Coulomb force, so that the second part moves towards the first opening, to realize the opening and closing of the acoustic switch and the adjustment and processing of the sound.

[0014] In a possible implementation, the inner wall of the sound guide channel protrudes towards the first part and is provided with a support part, and the first part is rotatably connected to the support part. The acoustic switch further comprises a reset member arranged on the support part and acting on the first part, and configured to drive the first part to reset.

[0015] In the above implementation, the reset member can drive the execution member to reset after the charge of the execution member and the main body is released, and thus the acoustic switch can be kept in the open state.

[0016] In a possible implementation, the execution member is a structure symmetrical about the rotation axis of the first part, and the masses of the execution member on both sides of the rotation axis of the first part in the direction of the second part towards the first part are equal.

[0017] In the above implementation, the masses of the execution member on both sides of the rotation axis of the first part in the direction of the second part towards the first part are equal, so that the execution member remains horizontal when the execution member and the main body are not applied with voltages, the execution member does not shield the first opening, and thus the acoustic switch can be kept in the open state.

[0018] In one possible implementation, the execution member further comprises a third portion, which is electrically conductive. The second portion and the third portion are symmetrically arranged on two sides of the first portion. The first wall further comprises a third electrically conductive portion, and the second wall further comprises a fourth electrically conductive portion. The third electrically conductive portion and the fourth electrically conductive portion are arranged on opposite sides of the third portion. When the third electrically conductive portion and the third portion are respectively charged with electric charges of different polarities, the third portion is attracted by the fourth electrically conductive portion and repelled by the third electrically conductive portion, and moves towards the fourth electrically conductive portion.

[0019] In the above implementation, the third portion, the third electrically conductive portion, and the fourth electrically conductive portion increase the coulomb force applied to the execution member when the execution member and the main body are applied with voltages, thereby increasing the movement speed of the execution member, and further increasing the responsiveness of the acoustic switch.

[0020] In one possible implementation, the inner wall of the sound guide channel comprises opposite first and second walls, and opposite third and fourth walls, the third wall is connected between the first wall and the second wall, and the fourth wall is connected between the first wall and the second wall. The first opening is arranged on the first wall, and the second opening is arranged on the second wall. The first opening and the second opening are arranged in a staggered manner along the first direction. The execution member is connected to the third wall and the fourth wall on opposite sides. In a natural state, the execution member is located in a region of the sound guide channel corresponding to a region between the first opening and the second opening along the first direction, and when the execution member and the main body are applied with voltages, the execution member deforms to a region of the sound guide channel corresponding to the first opening or the second opening along the first direction, so as to increase the conduction area. Or in a natural state, the execution member is located in a region of the sound guide channel corresponding to the first opening or the second opening along the first direction, and when the execution member and the main body are applied with voltages, the execution member deforms, and part of the execution member moves to a region of the sound guide channel corresponding to a region between the first opening and the second opening along the first direction, so as to decrease the conduction area.

[0021] In the above implementation, the execution member is connected to the third wall and the fourth wall in the sound guide channel, and the execution member and the main body are respectively applied with voltages of different polarities, so that the execution member deforms and part of the execution member moves to different positions in the sound guide channel, so that the relative positions of the execution member towards one side of the first wall and the first opening, and the relative positions of the execution member towards one side of the second wall and the second opening are changed, thereby changing the conduction state between the first opening and the second opening, and realizing the opening and closing of the acoustic switch.

[0022] In one possible implementation, the inner wall of the sound guide channel includes opposite first and second walls, and opposite third and fourth walls, the third wall is connected between the first and second walls, and the fourth wall is connected between the first and second walls. The number of the actuator, the first opening and the second opening is multiple. The multiple first openings are arranged along the first direction on the first wall, and the multiple second openings are arranged along the first direction on the second wall. Each adjacent first opening and second opening are arranged staggered along the first direction. The opposite sides of the actuator are connected to the third wall and the fourth wall, respectively. When the two actuators corresponding to at least one of the adjacent first opening and the second opening in the sound guide channel along the first direction are electrified, the two actuators are deformed to move to the area outside the sound guide channel along the first direction corresponding to the first opening and the second opening in the opposite direction, so as to reduce the conduction area. Or each actuator is located in the area between the adjacent first opening and the second opening in the sound guide channel along the first direction, and when the multiple actuators are electrified, the actuators are deformed and partially move to the area corresponding to the first opening or the second opening in the sound guide channel along the first direction, so as to increase the conduction area.

[0023] In the above implementation, the multiple actuators are arranged in the sound guide channel, and as long as the voltage is applied to the multiple actuators, the opening and closing of the acoustic switch can be realized by the displacement of the deformation of the actuators, the structure is simple, the occupied space of the actuators is small, and the miniaturization of the acoustic switch is facilitated.

[0024] In one possible implementation, two actuators located on both sides of the multiple first openings and the multiple second openings are arranged in the sound guide channel.

[0025] In the above implementation, two actuators located on both sides of the multiple first openings and the multiple second openings are arranged in the sound guide channel. It is convenient to apply voltage to the two actuators on both sides of the openings (the first openings and the second openings) to carry charges with different polarities.

[0026] In a second aspect, the application provides an acoustic switch, which includes a main body and an actuator. The main body is provided with a first opening. The actuator is connected with the main body and surrounds to form a sound guide channel, and is provided with a second opening, the first opening and the second opening are arranged staggered. When the actuator and the main body are electrified, the actuator and / or the main body are deformed by the Coulomb force generated by the charges with different polarities to make the part of the actuator and the main body located between the first opening and the second opening fit or be less than a set value, so as to change the conduction area between the first opening and the second opening.

[0027] In the above implementation, the actuator and the main body surround to form the sound guide channel, and the deformation of the actuator and / or the main body is realized by electrifying the actuator and the main body, the structure is simple, the occupied space of the actuator and the main body is small, and the miniaturization of the acoustic switch is facilitated.

[0028] In a possible implementation, the execution member includes a base and a connecting arm connected to the periphery of the base. The second opening is arranged on the base. At least one of the connecting arm and the base is capable of elastic deformation.

[0029] In the above implementation, the connecting arm or the base is capable of elastic deformation, so that when the execution member is subjected to the Coulomb force, the base is capable of moving towards the main body, and the execution member and the main body are in a distance less than a set value or in contact with each other between each adjacent part of the first opening and the second opening, so as to reduce the conduction area between the first opening and the second opening.

[0030] In a third aspect, the present application provides an electronic device including a device main body and an acoustic switch. The acoustic switch is any of the above acoustic switches, and is arranged on one side of the device main body and used to adjust the size of sound entering or emitted from the device main body.

[0031] In the above electronic device, the acoustic switch generates the Coulomb force for driving the movement of the execution member by applying a voltage to the main body and the execution member or to the execution member, without the need to additionally increase a driving structure such as a motor for driving the movement of the execution member. The acoustic switch occupies a small space as a whole, and is conducive to the miniaturization of the electronic device.

[0032] In a possible implementation, the device main body is a receiver speaker, a loudspeaker or a microphone.

[0033] In the above implementation, the acoustic switch is applied to the electronic device, and can realize the switching between the external mode and the privacy mode of the receiver speaker, the noise reduction mode of the earphone including the loudspeaker, and the disabled mode of the microphone. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 A schematic diagram of an acoustic switch provided by an embodiment of the present application applied to an electronic device is shown.

[0035] Figure 2 A schematic diagram of an acoustic switch provided by another embodiment of the present application applied to another electronic device is shown.

[0036] Figure 3 A schematic diagram of an acoustic switch provided by still another embodiment of the present application applied to still another electronic device is shown.

[0037] Figure 4 A schematic diagram of an acoustic switch provided by a first embodiment of the present application in an open state is shown.

[0038] Figure 5 A schematic diagram of the acoustic switch shown in the closed state is shown. Figure 4

[0039] Figure 6 ​A schematic view of the acoustic switch of the second embodiment of the present application in an open state.

[0040] Figure 7 A schematic view of the acoustic switch of the second embodiment of the present application in an open state. Figure 6

[0041] Figure 8 A schematic view of the acoustic switch of the second embodiment of the present application in an open state. Figure 7

[0042] Figure 9 A schematic view of the acoustic switch of the second embodiment of the present application in an open state. Figure 6

[0043] Figure 10 A schematic view of the acoustic switch of the third embodiment of the present application in an open state.

[0044] Figure 11 A schematic view of the acoustic switch of the third embodiment of the present application in an open state. Figure 10

[0045] Figure 12 A schematic view of the acoustic switch of the third embodiment of the present application in an open state. Figure 10

[0046] Figure 13 A schematic view of the acoustic switch of the third embodiment of the present application in an open state. Figure 12

[0047] Figure 14 A schematic view of the acoustic switch of the third embodiment of the present application in an open state. Figure 10

[0048] Figure 15 A schematic view of the acoustic switch of the third embodiment of the present application in an open state. Figure 14

[0049] Figure 16 A schematic view of the acoustic switch of the third embodiment of the present application in an open state. Figure 10

[0050] A schematic view of the acoustic switch of the third embodiment of the present application in an open state. Figure 17 Figure 18 Figure 16 A schematic view of the acoustic switch of the third embodiment of the present application in an open state.

[0051] Figure 19 A schematic view of the acoustic switch of the fourth embodiment of the present application in an open state.

[0052] Figure 20 A schematic view of the acoustic switch of the fourth embodiment of the present application in an open state. Figure 19 ​​​​​​​​​​A schematic view of the acoustic switch shown in the closed state.

[0053] Figures 21 to 23 A schematic view of the acoustic switch shown in the closed state. Figure 19 A schematic view of the acoustic switch shown in the closed state.

[0054] Figure 24 A schematic view of the acoustic switch shown in the closed state.

[0055] Figure 25 A schematic view of the acoustic switch shown in the closed state. Figure 26 A schematic view of the acoustic switch shown in the closed state. Figure 24 A schematic view of the acoustic switch shown in the closed state.

[0056] Figure 27 A schematic view of the acoustic switch shown in the closed state.

[0057] Figure 28 A schematic view of the acoustic switch shown in the closed state. Figure 29 A schematic view of the acoustic switch shown in the closed state. Figure 27 A schematic view of the acoustic switch shown in the closed state.

[0058] Explanation of main component symbols

[0059]

[0060] The following detailed description will further describe the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0061] In order to further clarify the technical means and effects taken by the present application to achieve the intended purpose of the application, the following will be described in conjunction with the drawings and embodiments. Obviously, the described embodiments are only some of the embodiments of the present application, not all.

[0062] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0063] Some embodiments of the present application provide an acoustic switch including a main body and an actuator. The main body has a first opening and a second opening, and a sound guide channel is formed in the main body and connects the first opening and the second opening. The actuator is arranged in the sound guide channel. The actuator is configured to deform or shift in the sound guide channel when the actuator and the main body are applied with a voltage, so as to change a conductive area between the first opening and the second opening. Or the actuator is configured to deform or shift in the sound guide channel when the actuator is applied with a voltage, so as to change the conductive area. Or in the acoustic switch, the main body has the first opening, the actuator is connected with the main body and surrounds the sound guide channel, and the main body has the second opening. The first opening and the second opening are arranged in a staggered manner. The actuator and the main body are applied with charges with different polarities when the voltage is applied, so that the actuator is deformed by the Coulomb force generated by the charges, and the actuator and the main body are attached to each other or smaller than a set value at a portion between the first opening and the second opening, so as to change the conductive area between the first opening and the second opening.

[0064] The acoustic switch described above generates the Coulomb force to drive the actuator to move by applying the voltage to the main body and the actuator or to the actuator. Without additional driving structures such as motors, the acoustic switch occupies a small space, and is conducive to miniaturization of electronic devices.

[0065] Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. The following examples and features in the examples can be combined with each other without conflict.

[0066] Please refer to Figures 1 to 3 An embodiment of the present application provides an acoustic switch 100. The acoustic switch 100 is formed by using a MEMS (Micro-Electro-Mechanical System) technology, and forms a sound adjustment structure of an electronic device. The present application also provides an electronic device. The electronic device includes the acoustic switch 100 and a device body 201. In an embodiment, the electronic device is a terminal device including a sound conduction function. For example, the terminal device can be a mobile phone, a tablet computer, a wearable device, a vehicle-mounted device, an augmented reality (AR) / virtual reality (VR) device, a notebook computer, an ultra-mobile personal computer (UMPC), a netbook, a personal digital assistant (PDA), and the like.

[0067] In an embodiment, as Figure 1As shown, the electronic device 200a has a dual-channel function. The device body 201a is a receiver speaker. The electronic device 200a is provided with a micro gap and an opening (not shown in the figure). The sound waves generated by the device body 201a can be conducted from the micro gap and the opening to the external environment. The receiver speaker can conduct the sound waves generated by the device body 201a to the human ear through the micro gap. In order to avoid the problem of sound leakage to the external environment through the opening in the talk mode, causing privacy leakage, the acoustic switch 100 is configured to close the channel (not shown in the figure) between the device body 201a and the opening, block the channel for sound waves to leak to the outside, so as to realize the privacy mode of the receiver speaker; and when external sound is needed, the acoustic switch 100 is configured to open the channel, thereby realizing the external mode of the receiver speaker.

[0068] In another embodiment, as shown in Figure 2 , the electronic device 200b is a headset structure. The electronic device 200b is provided with a leakage hole (not shown in the figure). The device body 201b is a loudspeaker. The general in-ear earphone has two modes of permeability and noise reduction. The sound of the external environment enters the human ear through the leakage hole, causing the human ear to be able to hear the sound of the external environment and the sound emitted by the loudspeaker at the same time. The acoustic switch 100 is configured to close the channel (not shown in the figure) between the leakage hole and the human ear, so as to reduce or avoid the sound waves of the external environment from being conducted to the human ear, and realize the quiet noise reduction mode. When the electronic device 200b needs to switch to the permeable mode, the acoustic switch 100 can be switched to the open state.

[0069] In yet another embodiment, as shown in Figure 3 , the device body 201c is a microphone. The electronic device 200c is provided with another opening (not shown in the figure), which is connected to the microphone. The acoustic switch 100 is arranged in the channel connected between the opening and the device body 201c, and the acoustic switch 100 is configured to be able to close the channel, so as to realize the physical blocking of the sound passage, and place the device body 201c to monitor the sound of the external environment, and realize the microphone disabled mode of the electronic device 200c.

[0070] First embodiment

[0071] Please refer to Figure 4 and Figure 5The acoustic switch 100 includes a main body 10 and an execution member 20. The main body 10 is provided with a sound guide channel 103. The main body 10 is provided with a first opening 101 and a second opening 102. The first opening 101 and the second opening 102 are respectively connected to the sound guide channel 103 and the external environment. In an embodiment, the main body 10 includes a base 1001 and a cover 1003. The base 1001 and the cover 1003 surround the sound guide channel 103, and the first opening 101 and the second opening 102 are formed between the cover 1003 and the base 1001, but are not limited thereto. For example, in other embodiments, the main body 10 can also be formed by three or more structures connected.

[0072] The execution member 20 is arranged in the sound guide channel 103. In a natural state, the execution member 20 avoids the sound guide channel 103g between the first opening 101 and the second opening 102, so that sound waves can pass through the first opening 101, the sound guide channel 103g and the second opening 102, and the acoustic switch 100 is in an open state. In an embodiment, the execution member 20 is parallel to the direction of the first opening 101 towards the second opening 102 in the natural state, but is not limited thereto. For example, in other embodiments, the execution member 20 can also be arranged in a linear track inclined to the direction of the first opening 101 towards the second opening 102 in the natural state, as long as the execution member 20 does not block the sound guide channel 103g.

[0073] In an embodiment, the first opening 101 and the second opening 102 are respectively located on opposite sides of the sound guide channel 103, and are arranged in a direction parallel to the bottom wall of the sound guide channel 103, but are not limited thereto. It can be understood that in other embodiments, the first opening 101 and the second opening 102 can also be arranged in a direction inclined to the bottom wall of the sound guide channel 103.

[0074] In an embodiment, one end of the execution member 20 close to the second opening 102 is rotatably arranged on the main body 10, but is not limited thereto.

[0075] The execution member 20 is configured to be offset in the sound guide channel 103 when the execution member 20 and the main body 10 are applied with a voltage, so as to change the conduction area between the first opening 101 and the second opening 102. The main body 10 and the execution member 20 are respectively applied with a voltage, so that the main body 10 and the execution member 20 respectively have electric charges. According to the principle that unlike charges attract each other and like charges repel each other, the execution member 20 is moved by the Coulomb force to change the position in the sound guide channel 103.

[0076] For example, as shown in Figure 5As shown, the execution member 20 is charged with negative polarity, the main body 10 is charged with positive polarity on the side of the execution member 20 close to the first opening 101, and the main body 10 is charged with negative polarity on the side of the execution member 20 away from the first opening 101. The execution member 20 is attracted by the charged part of the main body 10 close to the first opening 101 and repelled by the charged part of the main body 10 away from the first opening 101, so that the execution member 20 is deflected and moves close to the first opening 101, and the area of the first opening 101 and the sound guide passage 103 is gradually reduced.

[0077] In an embodiment, when the acoustic switch 100 is in the closed state, i.e., the acoustic switch 100 blocks the sound, the distance between the execution member 20 and the part of the main body 10 charged with positive polarity is less than a set value, which makes the impedance between the execution member 20 and the main body 10 large and makes it difficult for the sound to pass through. The execution member 20 is spaced apart from the main body 10 to avoid neutralization of the charges when they contact, which causes the position of the execution member 20 to change due to the change in the Coulomb force. It can be understood that in other embodiments, the second part 23 can also be attached to the part of the main body 10 charged with positive polarity when the acoustic switch is in the closed state. An insulating film (not shown) is attached to the outside of the second part 23 to avoid neutralization of the charges between the second part 23 and the main body 10.

[0078] The acoustic switch 100 generates the Coulomb force driving the execution member 20 to move by applying a voltage to the main body 10 and the execution member 20, without the need to additionally increase the driving structure such as a motor to drive the execution member 20 to move. The acoustic switch 100 occupies a small space as a whole, which is conducive to the miniaturization of the acoustic switch 100 applied to the electronic device 200.

[0079] The execution member 20 is provided with a first part 21 and a second part 23. The first part 21 is rotatably connected to the main body 10. The second part 23 is located on one side of the first part 21. The execution member 20 is a conductive structure. The inner wall of the sound guide passage 103 includes a first wall 11 and a second wall 12. The first wall 11 and the second wall 12 are respectively located on opposite sides of the execution member 20. The first wall 11 is provided with a first conductive part 1101 corresponding to the second part 23. The second wall 12 is provided with a second conductive part 1102 corresponding to the second part 23. The first conductive part 1101 is closer to the first opening 101 than the second conductive part 1102. The main body 10 and the execution member 20 are respectively applied with a voltage, so that the execution member 20 is charged with negative polarity, the first conductive part 1101 is charged with positive polarity, and the second conductive part 1102 is charged with negative polarity. The second part 23 of the execution member 20 rotates towards the first conductive part 1101.

[0080] It can be understood that in other embodiments, only the second part 23 of the execution member 20 can be conductive, and other parts of the execution member 20 can not be conductive.

[0081] In an embodiment, the base 1001 is a silicon-based structure, and the first conductive part 1101 and the second conductive part 1102 are conductive layers arranged on the main body 10, but are not limited thereto. As long as the main body 10 can generate electric charges when a voltage is applied, the material of the main body 10 is not limited herein.

[0082] In an embodiment, the sound wave enters the sound guide channel 103 from the first opening 101 and is transmitted from the second opening 102, but is not limited thereto. For example, in another embodiment, the sound wave can also enter the sound guide channel 103 from the second opening 102 and be transmitted from the first opening 101, and the actuator 20 can also prevent the sound from passing through the acoustic switch 100 by shielding the first opening 101.

[0083] It can be understood that, in other embodiments, when the acoustic switch 100 allows the sound to pass through, the voltage is released, the electric charges are consumed, the coulomb force disappears, and the actuator 20 returns to the original position. In an embodiment, the acoustic switch 100 further comprises a reset member 30. The inner wall of the sound guide channel 103 is provided with a support part 15 protruding towards the first part 21. The first part 21 is rotatably arranged on the support part 15. The reset member 30 is arranged on the support part 15 and acts on the actuator 20 to rotate the actuator 20 to the original position. The reset member 30 can be a return spring or the like structure. The reset member 30 can drive the actuator 20 to reset after the electric charges on the actuator 20 and the main body 10 are released, thereby realizing that the acoustic switch 100 remains in the open state.

[0084] The support part 15 makes the actuator 20 have a spacing from the bottom wall of the sound guide channel 103, thereby providing the actuator 20 with a movement space.

[0085] The size of the control voltage can adjust the amount of electric charges on the main body 10 and the actuator 20, thereby adjusting the plugging area of the actuator 20 at the first opening 101 to change the acoustic impedance. For example, when the actuator 20 rotates to different positions corresponding to the open state and the closed state of the acoustic switch 100, the conduction area between the first opening 101 and the second opening 102 is different, thereby changing the size of the sound passing through the acoustic switch 100 to realize the effect of adjusting the sound.

[0086] It can be understood that, in other embodiments, the reset member 30 can also be omitted, for example, by applying a voltage to the main body 10 to gradually replace the electric charges on the first conductive part 1101 with negative electric charges, and the first conductive part 1101 and the second conductive part 1102 respectively exert repulsion forces on the actuator 20, and when the two repulsion forces are the same, the actuator 20 is substantially parallel to the first conductive part 1101 and the second conductive part 1102, thereby making the acoustic switch 100 return to the open state. The acoustic switch 100 omits the reset member 30, and the structure is simplified.

[0087] It is understood that in other embodiments, when the main body 10 and the actuator 20 are subjected to voltage, the actuator 20 may also have a positive charge, the first conductive part 1101 may have a negative charge, and the second conductive part 1102 may have a positive charge.

[0088] The first conductive part 1101 and the second conductive part 1102, as well as the second part 23 of the actuator 20, are conductive. The first conductive part 1101 and the second conductive part 1102, located on opposite sides of the second part 23, apply a Coulomb force to the actuator 20, thereby causing the actuator 20 to deflect within the sound guide channel 103. By varying the amount of obstruction of the first opening 101 by the second part 23 of the actuator 20, the opening and closing of the acoustic switch 100 and the sound conditioning processing are adjusted.

[0089] Second Embodiment

[0090] Please see Figure 6 and Figure 7 The acoustic switch 100d of the second embodiment has a structure that is largely the same as that of the acoustic switch 100 of the first embodiment, except that the actuator 20d has a structure that is symmetrical about the rotation axis of the first part 21. The actuator 20d also has a third part 25, and the reset part 30 is omitted.

[0091] The actuator 20d is symmetrical about the axis of rotation of the first part 21, such that the mass of the actuator 20d on both sides of the axis of rotation of the first part 21 along the direction of the second part 23 toward the first part 21 is equal. When no voltage is applied to the actuator 20d and the main body 10, the actuator 20d remains horizontal, thereby keeping the acoustic switch 100d in the open state.

[0092] The second part 23 and the third part 25 are symmetrically arranged on both sides of the first part 21. The first wall 11 is also provided with a third conductive part 1103, and the second wall 12 is also provided with a fourth conductive part 1104. The third conductive part 1103 and the fourth conductive part 1104 are respectively located on opposite sides of the third part 25.

[0093] When voltage is applied to the main body 10 and the actuator 20d, the third conductive part 1103 carries a negative charge, and the fourth conductive part 1104 carries a positive charge. The third part 25 is attracted by the fourth conductive part 1104 and repelled by the third conductive part 1103, moving towards the fourth conductive part 1104. When voltage is applied to the actuator 20d and the main body 10, the third part 25, the third conductive part 1103, and the fourth conductive part 1104 increase the Coulomb force applied to the actuator 20d, increasing the movement speed of the actuator 20d, and thus improving the responsiveness of the acoustic switch 100d.

[0094] It can be understood that in other embodiments, the third part 25 of the execution member 20d is conductive, and the third part 25 and the second part 23 can also respectively carry opposite polarity charges. As long as the third conductive part 1103 carries the same polarity charge as the third part 25, and the third part 25 carries the opposite polarity charge as the fourth conductive part 1104, the third part 25 and the second part 23 of the execution member 20d can move in opposite directions: the second part 23 moves towards the first opening 101, and the third part 25 moves away from the first opening 101.

[0095] Referring to Figure 8 In another embodiment, the execution member 20, the first conductive part 1101, the second conductive part 1102, the third conductive part 1103, and the fourth conductive part 1104 respectively carry the same polarity charge to keep the execution member 20d balanced in a state of not shielding the first opening 101, thereby realizing that the acoustic switch 100e remains in an open state.

[0096] Referring to Figure 9 In yet another embodiment, the execution member 20f can be elastically deformed. The first part 21 is fixedly connected to the support part 15 of the main body 10. The second part 23f is attracted by the first conductive part 1101 and repelled by the second conductive part 1102 to bend and deform towards the first conductive part 1101. The third part 25f is repelled by the third conductive part 1103 and attracted by the fourth conductive part 1104 to bend and deform towards the fourth conductive part 1104. The second part 23f can be bent and deformed, so that the second part 23f can move towards the first opening 101 under the action of the coulomb force, realizing the opening and closing of the acoustic switch 100f and the adjustment and processing of sound.

[0097] Third embodiment

[0098] Referring to Figure 10 And Figure 11 The acoustic switch 100g includes a main body 10g and an execution member 20g. The main body 10g is provided with a first opening 101g and a second opening 102g, and a sound guide channel 103g is arranged in the main body 10g to communicate the first opening 101g and the second opening 102g. The execution member 20g is arranged in the sound guide channel 103g. The execution member 20g is configured to deform when the execution member 20g and the main body 10g are applied with a voltage, so as to change the conduction area between the first opening 101g and the second opening 102g.

[0099] In an embodiment, the first opening 101g and the second opening 102g are located at opposite sides of the sound guide passage 103g and are misaligned along the first direction X. The inner wall of the sound guide passage 103g includes a first wall 11g and a second wall 12g located at opposite sides of the actuator 20g, and a third wall 13g and a fourth wall 14g located at other two sides of the actuator 20g. The third wall 13g is connected between the first wall 11g and the second wall 12g, and the fourth wall 14g is connected between the first wall 11g and the second wall 12g. The first opening 101g is arranged on the first wall 11g, and the second opening 102g is arranged on the second wall 12g.

[0100] For the sake of clarity of subsequent description, the second direction Z is defined as the direction in which the first wall 11g faces the second wall 12g, the first direction X is perpendicular to the second direction Z and the third direction Y, and the third direction Y is the direction in which the third wall 13g faces the fourth wall 14g. It can be understood that in other embodiments, the first direction X and the second direction Z / third direction Y can also be two directions that are relatively inclined and have an acute angle.

[0101] The projection of the first opening 101g on the second wall 12g of the sound guide passage 103g is located outside the second opening 102g, thereby realizing misalignment of the first opening 101g and the second opening 102g along the first direction X.

[0102] Please continue to refer to Figure 11 The opposite sides of the actuator 20g are connected to the third wall 13g and the fourth wall 14g, and the third wall 13g and the fourth wall 14g are located at opposite sides of the first opening 101g and the second opening 102g. The actuator 20g is attached to the first wall 11g and the second wall 12g in a natural state, but is not limited thereto. The actuator 20g is located in the region of the sound guide passage 103g corresponding to the second opening 102g in a natural state. The second opening 102g destroys the attachment of the actuator 20g to the second wall 12g of the sound guide passage 103g, resulting in a conductive state between the sound guide passage 103g and the second opening 102g. The conductive area of the first opening 101g and the second opening 102g is greater than zero, and the acoustic switch 100g is in an open state.

[0103] The actuator 20g is deformed to the position of the sound guide passage 103g corresponding to the first opening 101g or the second opening 102g along the first direction X when the actuator 20g and the main body 10g are energized, so as to increase the conductive area. The inner wall of the sound guide passage 103g located on the side of the first opening 101g away from the second opening 102g is provided with a fifth conductive part 1105, such as Figure 12 and Figure 13The fifth conductive part 1105 and the execution member 20g are respectively applied with voltage to have charges with different polarities. The execution member 20g is deformed by the Coulomb force generated by the charges, and a part of the execution member 20g moves into the sound guide passage 103g corresponding to the region between the first opening 101g and the second opening 102g, as shown in FIG. 10B. The execution member 20g is attracted to the first wall 11g, the second wall 12g, the third wall 13g, and the fourth wall 14g, and the whole peripheral wall of the execution member 20g is in close contact with the first wall 11g, the second wall 12g, the third wall 13g, and the fourth wall 14g, so that the execution member 20g divides the sound guide passage 103g into two cavities, and the first opening 101g and the second opening 102g respectively communicate with the two different cavities, as shown in FIG. 10C. The sound guide passage 103g is in a closed state, and the acoustic switch 100g is in a closed state. Figure 11 The execution member 20g is attracted to the first wall 11g, the second wall 12g, the third wall 13g, and the fourth wall 14g, and the whole peripheral wall of the execution member 20g is in close contact with the first wall 11g, the second wall 12g, the third wall 13g, and the fourth wall 14g, so that the execution member 20g divides the sound guide passage 103g into two cavities, and the first opening 101g and the second opening 102g respectively communicate with the two different cavities, as shown in FIG. 10C. The sound guide passage 103g is in a closed state, and the acoustic switch 100g is in a closed state.

[0104] It can be understood that in other embodiments, the peripheral wall of the execution member 20g can also have a gap smaller than a set value between the first wall 11g and the second wall 12g to increase the sound impedance so that the sound wave is difficult to pass through the gap or the sound wave energy is very small after passing through the gap to achieve the effect of closing the acoustic switch 100g.

[0105] In an embodiment, the execution member 20g is a diaphragm structure, so that the execution member 20g can be elastically deformed under force, for example, the execution member 20g is a diaphragm structure made of polysilicon material.

[0106] It can be understood that in other embodiments, the position of the execution member 20g can be changed, for example, in another embodiment, as shown in FIG. 11A, the execution member 20g is located in the region of the sound guide passage 103g corresponding to the first opening 101g in a natural state, and the first opening 101g destroys the close contact between the peripheral wall of the execution member 20g and the first wall 11g of the sound guide passage 103g, so that the first opening 101g and the sound guide passage 103g are in a conductive state. Figure 14 The sixth conductive part 1106 and the execution member 20g are respectively applied with voltage to have charges with different polarities, and a part of the execution member 20g moves into the sound guide passage 103g corresponding to the region between the first opening 101g and the second opening 102g, as shown in FIG. 11B. The execution member 20g is attracted to the first wall 11g, the second wall 12g, the third wall 13g, and the fourth wall 14g, and the whole peripheral wall of the execution member 20g is in close contact with the first wall 11g, the second wall 12g, the third wall 13g, and the fourth wall 14g, so that the execution member 20g divides the sound guide passage 103g into two cavities, and the first opening 101g and the second opening 102g respectively communicate with the two different cavities, as shown in FIG. 11C. The sound guide passage 103g is in a closed state, and the acoustic switch 100g is in a closed state. Figure 15As shown in FIG. 10G, the whole circumferential wall of the execution member 20g is in contact with the first wall 11g, the second wall 12g, the third wall 13g and the fourth wall 14g, so that the execution member 20g divides the sound guide channel 103g into two cavities, and the first opening 101g and the second opening 102g are in communication with the two different cavities respectively, so that the conductive area of the first opening 101g and the second opening 102g is zero, and the acoustic switch 100h is in the closed state.

[0107] It can be understood that in other embodiments, the execution member 20g can also make the acoustic switch 100g in the closed state in the natural state, for example, in another embodiment, as shown in FIG. 10H, the execution member 20g is located in the region of the sound guide channel 103g corresponding to the first opening 101g and the second opening 102g in the natural state, and the whole circumferential wall of the execution member 20g is in contact with the first wall 11g, the second wall 12g, the third wall 13g and the fourth wall 14g respectively, so that the acoustic switch 100i is in the closed state. Figure 16 Figure 17 As shown in FIG. 10I, when the execution member 20g and the sixth conductive part 1106 are applied with voltage and carry different polarity charges respectively, part of the execution member 20g moves towards the second opening 102g under the action of the coulomb force, so that the second opening 102g breaks the contact between the execution member 20g and the second wall 12g, and the second opening 102g is in communication with the sound guide channel 103g located on the side of the execution member 20g towards the first opening 101g along the first direction X, so that the conductive area of the first opening 101g and the second opening 102g is greater than zero, and the acoustic switch 100i is switched to the open state. Alternatively, as shown in FIG. 10J, when the execution member 20g and the fifth conductive part 1105 are applied with voltage and carry different polarity charges respectively, part of the execution member 20g moves towards the first opening 101g under the action of the coulomb force, so that the first opening 101g breaks the contact between the execution member 20g and the first wall 11g, and the first opening 101g is in communication with the sound guide channel 103g located on the side of the execution member 20g towards the second opening 102g along the first direction X, so that the conductive area of the first opening 101g and the second opening 102g is greater than zero, and the acoustic switch 100j is switched to the open state. Figure 18

[0108] The execution member 20g is connected to the third wall 13g and the fourth wall 14g in the sound guide channel 103g, and the execution member 20g and the main body 10g carry different polarity charges when applied with voltage respectively, so that the execution member 20g deforms and moves to different positions in the sound guide channel 103g, so that the relative position of the side of the execution member 20g towards the first wall 11g and the first opening 101g, and the relative position of the side of the execution member 20g towards the second wall 12g and the second opening 102g are changed, so that the conductive state between the first opening 101g and the second opening 102g is changed, and the opening and closing of the acoustic switch 100g is realized.​​

[0109] Fourth embodiment

[0110] Please refer to Figure 19 and Figure 20 The acoustic switch 100k of the fourth embodiment is substantially the same as the acoustic switch 100k of the third embodiment, except that the number of the first openings 101k, the second openings 102k and the actuators 20k are multiple respectively.

[0111] The multiple first openings 101k are arranged on the same side of the sound guide channel 103k along the first direction X, and the multiple second openings 102k are arranged on the side of the sound guide channel 103k away from the multiple first openings 101k along the first direction X.

[0112] In an embodiment, the number of the first openings 101k is three, the number of the second openings 102k is two, and the number of the actuators 20k is four, but not limited thereto. The three first openings 101k are arranged on the first wall 11k with intervals, and the two second openings 102k are arranged on the second wall 12k.

[0113] Each two actuators 20k are located in the region of the sound guide channel corresponding to each second opening 102k along the first direction X. The second opening 102k breaks the adhesion between the peripheral wall of the two actuators 20k and the second wall 12k respectively, so that the side of the second opening 102k facing the first opening 101k and the sound guide channel 103k are in a conductive state, and the conductive area of the first opening 101k and the second opening 102k is greater than zero, and the acoustic switch 100k is in an open state, as shown in Figure 19 .

[0114] The four actuators 20k are applied with voltage, so that the two actuators 20k corresponding to each second opening 102k carry the same polarity of charge, so that the two actuators 20k are deformed and partially move to the two sides of the second opening 102k in opposite directions, that is, to the region of the sound guide channel 103k corresponding to the first opening 101k and the second opening 102k along the first direction X, so that the peripheral wall of each actuator 20k is adhered to the first wall 11k, the second wall 12k, the third wall 13g and the fourth wall 14g, and then the actuator 20k connects the adjacent first opening 101k and the second opening 102k in the two separated cavities, thereby blocking the conduction of the first opening 101k and the second opening 102k, and the acoustic switch 100k is in a closed state, as shown in Figure 20 .

[0115] It can be understood that in other embodiments, the number and position of the actuators 20k can also be changed, for example, in another embodiment, as shown in Figure 21As shown, the number of actuators 20k of the acoustic switch 1001 is six, and every two actuators 20k are located in the region of the sound guide channel 103k corresponding to the first opening 101k.

[0116] As another example, in another embodiment, as shown in Figure 22 As shown, the number of actuators 20k is four. Each actuator 20k is located in the region of the sound guide channel 103k corresponding to the region between the adjacent first opening 101k and second opening 102k along the first direction X, so that the acoustic switch 100m is in the closed state. When the four actuators 20k are applied with voltage, the actuators 20k are deformed and partially move to the region of the sound guide channel 103k corresponding to the first opening 101k or the second opening 102k along the first direction X, so as to increase the conduction area. For example, when every two adjacent actuators 20k are applied with charges of different polarities, the two actuators 20k are deformed and partially move to the region of the sound guide channel 103k corresponding to the second opening 102k, so that the conduction area of the adjacent first opening 101k and second opening 102k is greater than zero, and the acoustic switch 100mk is in the open state.

[0117] The plurality of actuators 20k are arranged in the sound guide channel 103k, and as long as the plurality of actuators 20k are applied with voltage, the opening and closing of the acoustic switch 100k can be achieved through the deformation and displacement of the actuators 20k, the structure is simple, the actuators 20k occupy small space, and the miniaturization of the acoustic switch 100k is facilitated.

[0118] As shown in Figure 23 In another embodiment, as shown in Figure 23 The difference between the acoustic switch 100n shown in Figure 22 The difference between the acoustic switch 100m shown in

[0119] It can be understood that in other embodiments, the acoustic switch 100n shown in Figure 23 As shown in

[0120] Fifth embodiment

[0121] As shown in Figure 24The acoustic switch 100p comprises a main body 10p and an actuator 20p. The main body 10p is provided with a first opening 101p. The actuator 20p is connected to the main body 10p and surrounds the sound guide channel 103p. The actuator 20p is provided with a second opening 102p.

[0122] In an embodiment, the number of the first openings 101p is two and the number of the second openings 102p is three, but not limited to this. Each adjacent first opening 101p and second opening 102p are arranged staggered, for example, the orthographic projection of the first opening 101p on the main body 10p is located outside the second opening 102p.

[0123] When the actuator 20p is in a natural state, the first opening 101p and the second opening 102p are in communication with both sides of the sound guide channel 103p, and the acoustic switch 100p is in an open state.

[0124] The actuator 20p and the main body 10p respectively comprise conductive structures, so that when the actuator 20p and the main body 10p are applied with a voltage, the actuator 20p and the main body 10p carry charges of different polarities, and the actuator 20p is deformed by the Coulomb force generated by the charges. Part of the actuator 20p moves towards the main body 10p, so that the distance between the actuator 20p and the main body 10p in the part between each adjacent first opening 101p and second opening 102p is less than a set value, so as to increase the acoustic impedance and realize the conduction area before the first opening 101p and the second opening 102p, as shown in FIG. 1C. Figure 25

[0125] The actuator 20p and the main body 10p surround the sound guide channel 103p, and the actuator 20p and the main body 10p are applied with a voltage to realize the deformation of the actuator 20p. The structure is simple, the occupied space of the actuator 20p and the main body 10p is small, and the miniaturization of the acoustic switch 100p is facilitated.

[0126] In an embodiment, the actuator 20p comprises a base body 27 and a connecting arm 29. The connecting arm 29 is connected to the circumferential side of the base body 27. The connecting arm 29 is connected between the base body 27 and the main body 10p. The connecting arm 29 can be elastically deformed. When the actuator 20p and the main body 10p are applied with a voltage, the base body 27 is conductive, so that the base body 27 and the main body 10p carry charges of different polarities. The base body 27 moves towards the main body 10p under the Coulomb force, and the connecting arm 29 elastically deforms to adapt to the gradually reduced distance between the base body 27 and the main body 10p.

[0127] It can be understood that in other embodiments, the actuator 20p can also be elastically deformed through the base body 27, and the connecting arm 29q does not deform under force, as shown in FIG. 2B. Figure 26 ​As shown in the acoustic switch 100q, when the voltage is applied to the body 10p and the actuator 20p, or to the actuator 20p, the Coulomb force is generated to drive the actuator 20p to move towards the body 27q, and the actuator 20p is deformed to abut against the body 10p at the part between each adjacent first opening 101p and second opening 102p, so as to reduce the conductive area between the first opening 101p and the second opening 102p.

[0128] Sixth embodiment

[0129] Please refer to Figure 27 The acoustic switch 100r of the sixth embodiment is substantially the same as the acoustic switch 100p of the fifth embodiment, except that the structure of the body 10r is different, and the actuator 20p does not have the elastic deformation function.

[0130] The body 10r includes a support part 1111 and a deformation part 1113, and the deformation part 1113 can be elastically deformed and can be conductive. The connecting arm 29 is connected to the support part 1111. When the actuator 20p and the body 10r are applied with a voltage, the actuator 20p and the body 10r carry charges of different polarities, and the deformation part 1113 is deformed by the Coulomb force generated by the charges, and the actuator 20p is not deformed.

[0131] It can be understood that in other embodiments, the body and the actuator can also be deformed, for example, as shown in the acoustic switch 100s, when the actuator 20p and the body 10r are applied with a voltage, the connecting arm 29 and the deformation part 1113 of the actuator 20p are deformed. Figure 28 For another example, as shown in the acoustic switch 100t, when the actuator 20q and the body 10r are applied with a voltage, the body 27q and the deformation part 1113 of the actuator 20q are deformed. Figure 29

[0132] The acoustic switch 100 described above generates the Coulomb force to drive the actuator 20 to move by applying the voltage to the body 10 and the actuator 20, or to the actuator 20, without the need to additionally increase the driving structure such as a motor to drive the actuator 20 to move, so that the acoustic switch 100 occupies a small space as a whole, and is beneficial to the miniaturization of the electronic device 200 to which the acoustic switch 100 is applied.

[0133] The acoustic switch 100 charges the body 10 and the actuator 20 by the electrostatic method, and compared with the existing piezoelectric acoustic switch, the acoustic switch 100 has higher coupling efficiency in the electrostatic type, can realize larger displacement of the actuator 20, and can realize larger difference between the switch states (open, closed and the state between open and closed); compared with the traditional electromagnetic acoustic switch, the acoustic switch 100 can realize miniaturization.

[0134] ​In addition, those skilled in the art should understand that the above implementation is only used to illustrate the present application, and is not used as a limitation to the present application, and as long as the above implementation is within the spirit and scope of the present application, the appropriate changes and modifications of the above implementation are within the scope of the present application.

Claims

1. An acoustic switch, characterized in that, include: The main body has a first opening and a second opening, and the main body has a sound guiding channel connecting the first opening and the second opening; and An actuator is disposed within the sound guiding channel; The actuator is configured to deform or shift within the acoustic channel when a voltage is applied to the actuator and the body, thereby changing the conductive area between the first opening and the second opening; The actuator has a first part and a second part, the first part is connected to the main body, and the second part is conductive; the inner wall of the sound guiding channel includes a first wall and a second wall located on opposite sides of the actuator, the first wall has a first conductive part, and the second wall has a second conductive part; along the direction from the first wall to the second wall, the first opening is located between the first conductive part and the actuator, and the first opening, the sound guiding channel and the second opening are connected on the same side of the actuator facing the first wall; When the second conductive part and the second portion have charges of different polarities from the first conductive part, the second portion is attracted by the first conductive part and repelled by the second conductive part, and moves toward the first conductive part to block at least part of the first opening.

2. The acoustic switch as described in claim 1, characterized in that: The first part is fixedly connected to the main body, and the second part is attracted by the first conductive part and repelled by the second conductive part to bend and deform toward the first conductive part.

3. The acoustic switch as described in claim 1, characterized in that: The actuator, the first conductive part, and the second conductive part are respectively subjected to voltage and have the same electrode charge, so as to reduce the area of ​​the second part blocking the first opening.

4. The acoustic switch as described in claim 1, characterized in that: The first part is rotatably connected to the main body to drive the second part to rotate.

5. The acoustic switch as described in claim 4, characterized in that: The inner wall of the sound guiding channel protrudes towards the first part and is provided with a support part, and the first part is rotatably connected to the support part; The acoustic switch further includes a reset member disposed on the support portion and acting on the first portion, and configured to drive the first portion to reset.

6. The acoustic switch as described in claim 4, characterized in that: The actuator has a structure that is symmetrical about the axis of rotation of the first part, and the actuator has equal mass on both sides of the axis of rotation of the first part along the direction from the second part toward the first part.

7. The acoustic switch as described in claim 6, characterized in that: The actuator is further provided with a third part, which is conductive; the second part and the third part are symmetrically arranged on both sides of the first part; the first wall is further provided with a third conductive part, and the second wall is further provided with a fourth conductive part; The third conductive part and the fourth conductive part are located on opposite sides of the third part; when the third conductive part and the third part have charges of different polarities from the fourth conductive part, the third part is attracted by the fourth conductive part and repelled by the third conductive part, and moves toward the fourth conductive part.

8. An acoustic switch, characterized in that, include: The main body has a first opening and a second opening, and the main body has a sound guiding channel connecting the first opening and the second opening; and An actuator is disposed within the sound guiding channel; The actuator is configured to elastically deform when a voltage is applied to the actuator and the body to change the conductive area between the first opening and the second opening; The inner wall of the sound guiding channel includes a first wall and a second wall opposite to each other, as well as a third wall and a fourth wall opposite to each other. The third wall is connected between the first wall and the second wall, and the fourth wall is connected between the first wall and the second wall. The first opening is disposed on the first wall, and the second opening is disposed on the second wall; the first opening and the second opening are offset along a first direction; the opposite sides of the actuator are respectively connected to the third wall and the fourth wall; In its natural state, the actuator is located in the region of the sound-guiding channel corresponding to the first opening and the second opening along the first direction. A sixth conductive portion is provided on the inner wall of the sound-guiding channel on the side of the first opening away from the second opening. When the sixth conductive portion and the actuator are respectively energized and carry charges of different polarities, the actuator deforms, causing a portion of the actuator to move to the location of the sound-guiding channel along the first direction corresponding to either the first opening or the second opening, thereby increasing the conductive area; or In its natural state, the actuator is located along the first direction in the region of the sound guiding channel corresponding to the first opening or the second opening. The inner wall of the sound guiding channel is provided with a fifth conductive part, which is located along the first direction on the side of the second opening away from the first opening. When the fifth conductive part and the actuator are respectively subjected to voltage and carry charges of different polarities, the actuator deforms, causing a portion of the actuator to move to the region of the sound guiding channel along the first direction corresponding to the region between the first opening and the second opening, thereby reducing the conductive area.

9. An acoustic switch, characterized in that, include: The main body has a first opening and a second opening, and the main body has a sound guiding channel connecting the first opening and the second opening; and An actuator is disposed within the sound guiding channel; The actuator is configured to elastically deform when a voltage is applied to the actuator and the body to change the conductive area between the first opening and the second opening; or The actuator is configured to elastically deform when a voltage is applied to two adjacent actuators to change the conduction area; The inner wall of the sound guiding channel includes a first wall and a second wall, as well as a third wall and a fourth wall, with the third wall connecting the first wall and the second wall, and the fourth wall connecting the first wall and the second wall. The number of actuators, first openings, and second openings are all multiple. Multiple first openings are arranged along a first direction on the first wall, and multiple second openings are arranged along a first direction on the second wall. Each adjacent first opening and second opening is staggered along the first direction. The opposite sides of the actuator are respectively connected to the third wall and the fourth wall. Two actuators are disposed in the area of ​​the sound guiding channel corresponding to at least one of the adjacent first opening and second opening along the first direction. When the two actuators are energized, they deform and partially move in opposite directions to the area of ​​the sound guiding channel outside the first opening and second opening along the first direction, so as to reduce the conduction area. or Each of the actuators is located in the region of the sound guide channel corresponding to the adjacent first opening and second opening along the first direction. When a voltage is applied to the plurality of actuators, the actuators deform and partially move to the region of the sound guide channel corresponding to the first opening or the second opening along the first direction, so as to increase the conduction area.

10. The acoustic switch as described in claim 9, characterized in that: The sound guiding channel is provided with two actuators located on both sides of the plurality of first openings and the plurality of second openings.

11. An acoustic switch, characterized in that, include: The main body includes a support portion and a deformable portion, the deformable portion having a first opening, the deformable portion being elastically deformable and conductive; and An actuator is connected to the main body and surrounds it to form a sound guiding channel. The actuator includes a base and a connecting arm connected to the periphery of the base. The connecting arm is connected to the support portion. The base has a second opening. The first opening and the second opening are offset. At least one of the connecting arm and the base is capable of elastic deformation; When a voltage is applied to the actuator and the body, they carry charges of different polarities, causing the actuator and / or the body to be deformed by the Coulomb force generated by the charges, so that the portion of the actuator and the body located between the first opening and the second opening is fitted or smaller than a set value, thereby changing the conductive area between the first opening and the second opening.

12. An electronic device, comprising a device body and an acoustic switch, characterized in that: The acoustic switch is the acoustic switch according to any one of claims 1 to 11, the acoustic switch is disposed on one side of the device body, and is used to adjust the volume of the sound entering the device body or emitted from the device body.

13. The electronic device as claimed in claim 12, characterized in that: The device itself is an earpiece speaker, loudspeaker, or microphone.

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