Pickup air duct structure and electronic equipment

Abstract

The invention relates to a pickup air duct structure and electronic equipment, the pickup air duct structure comprises a pipe body and a friction electrode assembly, the pipe body is provided with an airflow channel, and the friction electrode assembly comprises a first electrode plate, a second electrode plate and a rectification circuit module; the first electrode plate and the second electrode plate are provided with dust removal holes used for filtering gas flowing through the gas flow channel, when gas flow flows through the dust removal holes, the first electrode plate and the second electrode plate move relatively under the action of the gas flow and rub to generate electric energy, and the rectifying circuit module is electrically connected to the first electrode plate and the second electrode plate. The rectifying circuit module is used for collecting electric energy generated by friction of the first electrode plate and the second electrode plate. According to the pickup air duct structure and the electronic equipment, the airflow is buffered by using the first electrode plate and the second electrode plate, so that the flow path of the airflow is not increased, good frequency response flatness can be taken into account, and the protection performance of the vibrating diaphragm is improved while the good frequency response flatness is taken into account.

Description

Technical Field

[0001] The present application relates to the technical field of electronic equipment, and in particular to a sound pickup duct structure and electronic equipment. Background Art

[0002] With the development of communication technology and the needs of people's daily life, electronic devices such as mobile phones, tablets, and smart watches are becoming more and more popular.

[0003] In the related art, the microphone of the electronic device usually sets the air duct structure to be non-linear, so that the air duct structure has a corner reversal portion (referred to as the "corner"), thereby utilizing the fact that the airflow will attenuate when reversing through the corner, that is, the corner has an airflow buffering effect.

[0004] However, when the number of corners in the duct structure is too small, the number of airflow buffers is small, and the microphone diaphragm is easily broken due to excessive airflow when facing strong airflow. If the number of corners in the duct structure is too large, the path of airflow through the duct structure will be too long, affecting the frequency response of the microphone (referred to as "frequency response") and reducing flatness. Summary of the invention

[0005] The present application provides a sound pickup air duct structure and an electronic device to solve the technical problem of how to achieve good frequency response flatness while improving the protection performance of the diaphragm.

[0006] On the one hand, the present application provides a sound pickup air duct structure, comprising:

[0007] a tube body having an air flow channel;

[0008] A friction electrode assembly includes a first electrode sheet, a second electrode sheet and a rectifier circuit module. The first electrode sheet and the second electrode sheet are provided with dust removal holes for filtering the gas flowing through the airflow channel. When the airflow flows through the dust removal holes, the first electrode sheet and the second electrode sheet move relative to each other under the action of the airflow and generate electrical energy through friction. The rectifier circuit module is electrically connected to the first electrode sheet and the second electrode sheet, and is used to collect the electrical energy generated by the friction of the first electrode sheet and the second electrode sheet.

[0009] In one embodiment, the air flow channel comprises a first channel and a second channel which are interconnected, and the first channel and the second channel are arranged at an angle.

[0010] In one embodiment, the first channel and the second channel are perpendicular to each other.

[0011] In one embodiment, the length of the first channel is greater than that of the second channel, and the first electrode sheet and the second electrode sheet are arranged in the first channel at intervals along the length direction of the first channel.

[0012] In one embodiment, the first electrode sheet and the second electrode sheet are spaced apart from each other in the first channel by 0.5 mm to 0.9 mm.

[0013] In one embodiment, the angle between the thickness direction of the first electrode sheet and the length direction of the first channel is 0°~15°; and / or the angle between the thickness direction of the second electrode sheet and the length direction of the first channel is 0°~15°.

[0014] In one embodiment, all edges of the first electrode sheet and all edges of the second electrode sheet are connected to the inner wall of the first channel. When air flows through the dust removal hole, the first electrode sheet and the second electrode sheet move relative to each other along the thickness direction of the first electrode sheet and collide with each other, thereby generating electrical energy by friction.

[0015] In one embodiment, the first electrode sheet and the second electrode sheet are stacked and in contact with each other. When air flows through the dust removal hole, the first electrode sheet and the second electrode sheet maintain contact and their contact area increases or decreases under the disturbance of the air flow.

[0016] In one embodiment, the inner wall of the airflow channel is provided with a first connecting portion and a second connecting portion, the first connecting portion and the second connecting portion are staggered with each other around the length direction of the airflow channel, a portion of the edge of the first electrode sheet is connected to the first connecting portion, and a portion of the edge of the second electrode sheet is connected to the second connecting portion, and when the airflow flows through the dust removal hole, the first electrode sheet and the second electrode sheet swing relative to the first connecting portion and the second connecting portion respectively, so that the contact area between the first electrode sheet and the second electrode sheet becomes larger or smaller.

[0017] On the other hand, the present application provides an electronic device, including a shell, a microphone and a sound pickup air duct structure as described above, wherein the shell is provided with a through hole, the air flow channel has a sound pickup port connected to the outside through the through hole, the microphone and the sound pickup air duct structure are both arranged in the space enclosed by the shell, and the microphone is arranged at one end of the air flow channel of the sound pickup air duct structure away from the sound pickup port.

[0018] In one of the embodiments, the tube body of the sound pickup air duct structure is integrally formed with the shell.

[0019] In one embodiment, the electronic device includes a battery, which is disposed in the space enclosed by the shell. The battery is electrically connected to the rectifier circuit module, and the electrical energy collected by the rectifier circuit module is used to charge the battery.

[0020] The sound pickup air duct structure and electronic device of the present application are provided with a first electrode sheet and a second electrode sheet having dust removal holes in the air flow channel, so that the first electrode sheet and the second electrode sheet can filter and remove dust from the gas flowing through the air flow channel, and then play a dust-proof protection effect on the microphone corresponding to the sound pickup air duct structure in the electronic device; moreover, the first electrode sheet and the second electrode sheet move relative to each other under the action of the air flow and generate electrical energy by friction, and the rectifier circuit module can collect the electrical energy generated by friction, so that the power of the air flow can be converted into electrical energy, thus not only reducing the impact of the air flow on the microphone, but also achieving power generation. Based on the principle of friction power generation, the greater the air flow speed, the greater the intensity of the relative movement of the first electrode sheet and the second electrode sheet, and thus the more electrical energy generated by friction, thus, the kinetic energy of the air flow is converted into electrical energy, thereby avoiding large air flow from damaging the diaphragm of the microphone. Since the sound pickup air duct structure of the present application uses the first electrode sheet and the second electrode sheet to buffer the air flow, it will not increase the flow path of the air flow, so it can take into account good frequency response flatness, and then achieve both good frequency response flatness and improved protection performance for the diaphragm. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application 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 application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] FIG. 1 is a schematic structural diagram of an electronic device according to an embodiment.

[0023] FIG. 2 is a schematic cross-sectional view of a partial structure of an electronic device according to an embodiment.

[0024] FIG. 3 is a schematic structural diagram of a first electrode sheet and a second electrode sheet in a sound pickup duct structure of an electronic device according to an embodiment.

[0025] FIG. 4 is a schematic structural diagram of a sound pickup duct structure of an electronic device according to an embodiment.

[0026] FIG. 5 is a schematic structural diagram of a sound pickup duct structure of an electronic device according to another embodiment.

[0027] FIG. 6 is a schematic diagram of the arrangement positions of the first electrode sheet and the second electrode sheet in the air flow channel in a sound pickup air duct structure according to an embodiment.

[0028] FIG. 7 is a schematic structural diagram of the relative movement of the first electrode sheet and the second electrode sheet when the air flow F flows into the air flow channel through the sound pickup port in the sound pickup air duct structure shown in FIG. 6 .

[0029] FIG8 is a schematic diagram of the structure of the electronic device of the present application.

[0030] Description of Figure Numbers:

[0031] 100. Electronic device; 10. Shell; 10a. Through hole; 11. Front shell; 12. Frame; 13. Back cover; 20. Microphone; 30. Sound pickup air duct structure; 31. Tube body; 311. Air flow channel; 311a. Sound pickup port; 311b. First connecting part; 311c. Second connecting part; 3111. First channel; 3112. Second channel; 32. Friction electrode assembly; 32a. Dust removal hole; 321. First electrode sheet; 322. Second electrode sheet; 323. Rectifier circuit module; 40. Battery. DETAILED DESCRIPTION

[0032] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive.

[0033] As used herein, "electronic device" refers to a device that can receive and / or send communication signals, including but not limited to a device that is connected via any one or more of the following connection methods:

[0034] (1) Connection via wired lines, such as Public Switched Telephone Networks (PSTN), Digital Subscriber Line (DSL), digital cable, and direct cable connection;

[0035] (2) Via wireless interfaces, such as cellular networks, wireless local area networks (WLAN), digital television networks such as DVB-H networks, satellite networks, and AM-FM broadcast transmitters.

[0036] An electronic device configured to communicate via a wireless interface may be referred to as a "mobile terminal". Examples of mobile terminals include, but are not limited to, the following electronic devices:

[0037] (1) Satellite phone or cellular phone;

[0038] (2) Personal Communications System (PCS) terminals that can combine cellular radio telephones with data processing, fax, and data communications capabilities;

[0039] (3) Radiotelephone, pager, Internet / Intranet access, Web browser, notepad, calendar, Personal Digital Assistant (PDA) equipped with a Global Positioning System (GPS) receiver;

[0040] (4) conventional laptop and / or handheld receivers;

[0041] (5) Conventional laptop and / or palmtop radiotelephone transceivers, etc.

[0042] 1 , an electronic device 100 is provided in one embodiment of the present application. The electronic device 100 may be a mobile phone or a tablet computer. The type of the electronic device 100 is not limited here.

[0043] The electronic device 100 includes a housing 10 and a microphone 20 . The microphone 20 is disposed in a space enclosed by the housing 10 and is used to pick up external sounds to implement functions such as recording or talking.

[0044] The housing 10 includes a front housing 11, a frame 12, and a back cover 13, wherein the front housing 11 and the back cover 13 are connected to opposite sides of the frame 12. In some embodiments, the frame 12 and the back cover 13 are integrally formed, that is, the frame 12 and the back cover 13 form an integral structural member. The front housing 11 and the frame 12 can be connected by snap-fit ​​or by hot melt adhesive. The connection method of the various components of the housing 10 is not limited here.

[0045] As shown in FIG. 2 , the electronic device 100 includes a sound pickup air duct structure 30 , and the sound pickup air duct structure 30 is used to enable the microphone 20 to pick up external sounds without being blocked by the housing 10 .

[0046] The sound pickup air duct structure 30 includes a tube body 31 and a friction electrode assembly 32. The tube body 31 has an airflow channel 311. The friction electrode assembly 32 includes a first electrode sheet 321, a second electrode sheet 322 and a rectifier circuit module 323. As shown in FIG. 3 , the first electrode sheet 321 and the second electrode sheet 322 are provided with dust removal holes 32a for filtering the gas flowing through the airflow channel 311.

[0047] When the air flow flows through the dust removal hole 32a, the first electrode sheet 321 and the second electrode sheet 322 move relative to each other under the action of the air flow and generate electrical energy through friction. The rectifier circuit module 323 is electrically connected to the first electrode sheet 321 and the second electrode sheet 322. The rectifier circuit module 323 is used to collect the electrical energy generated by the friction between the first electrode sheet 321 and the second electrode sheet 322.

[0048] The sound pickup air duct structure 30 in the embodiment of the present application is provided with a first electrode sheet 321 and a second electrode sheet 322 having dust removal holes 32a in the air flow channel 311, so that the first electrode sheet 321 and the second electrode sheet 322 can filter and remove dust from the gas flowing through the air flow channel 311, and then provide dust protection for the microphone 20 corresponding to the sound pickup air duct structure 30 in the electronic device 100; moreover, the first electrode sheet 321 and the second electrode sheet 322 move relative to each other under the action of the air flow and generate electric energy by friction, and the rectifier circuit module 323 can collect the electric energy generated by friction, so that the power of the air flow can be converted into electric energy, thus not only reducing the impact force of the air flow on the microphone 20, but also realizing power generation. Based on the principle of friction power generation, the greater the air flow speed, the greater the intensity of the relative movement of the first electrode sheet 321 and the second electrode sheet 322, and thus the more electric energy generated by friction, thereby more kinetic energy of the air flow is converted into electric energy, thereby avoiding the damage of the diaphragm of the microphone 20 by the large air flow. Since the sound pickup duct structure 30 of the present application utilizes the first electrode sheet 321 and the second electrode sheet 322 to buffer the airflow, it will not increase the flow path of the airflow, so it can take into account good frequency response flatness, thereby achieving both good frequency response flatness and improved protection performance for the diaphragm.

[0049] Continuing with FIG. 1 and FIG. 2 , in some embodiments, the housing 10 is provided with a through hole 10a, which may be located in the frame 12. The airflow channel 311 has a sound pickup port 311a connected to the outside through the through hole 10a. The microphone 20 and the sound pickup air duct structure 30 are both arranged in the space enclosed by the housing 10. The microphone 20 is arranged at one end of the airflow channel 311 of the sound pickup air duct structure 30 away from the sound pickup port 311a, so that the microphone 20 can pick up external sounds from the sound pickup port 311a through the airflow channel 311.

[0050] It should be noted that the sound pickup duct structure 30 may be a structure independent of the housing 10 of the electronic device 100. In some embodiments, the sound pickup duct structure 30 may also be a structure integrated with the housing 10 of the electronic device 100, that is, the housing 10 is formed with the sound pickup duct structure 30. In this case, the tube body 31 of the sound pickup duct structure 30 is integrally formed with the housing 10. This structure is simple and eliminates the need to install the sound pickup duct structure 30 on the housing 10.

[0051] In some embodiments, the electronic device 100 further includes a battery 40. The battery 40 is disposed in the space enclosed by the housing 10. The battery 40 is electrically connected to the rectifier circuit module 323, and the electric energy collected by the rectifier circuit module 323 is used to charge the battery 40. Thus, the friction electrode assembly 32 in the sound pickup air duct structure 30 can also increase the battery life of the battery 40.

[0052] As shown in FIG. 4 , the airflow channel 311 has a first channel 3111 and a second channel 3112 that are interconnected. The first channel 3111 and the second channel 3112 are arranged at an angle. In this way, the airflow changes direction during the process of flowing from the first channel 3111 into the second channel 3112, thereby achieving the effect of weakening the impact force of the airflow on the diaphragm of the microphone 20. It can be understood that since the angle between the first channel 3111 and the second channel 3112 will only produce one corner, this structure has little effect on the path length of the airflow through the airflow channel 311. Subsequently, the sound pickup duct structure 30 of the present application will not face the problem in the related art that when too many corners are set to alleviate the impact force of the airflow on the diaphragm of the microphone 20, the path of the airflow through the duct structure is too long, resulting in a decrease in the flatness of the frequency response.

[0053] The first channel 3111 and the second channel 3112 are perpendicular to each other, so as to optimize the flow direction of the air flow channel 311 , so as to reasonably set the position of the sound pickup port 311 a and the position of the microphone 20 .

[0054] In some embodiments, the length of the first channel 3111 is greater than the length of the second channel 3112. For a channel, the direction in which the airflow flows through the channel is the length direction of the channel, and then the length of the first channel 3111 can be understood as the length of the path along which the airflow flows along the first channel 3111; accordingly, the length of the second channel 3112 can be understood as the length of the path along which the airflow flows along the second channel 3112.

[0055] The first electrode sheet 321 and the second electrode sheet 322 are arranged in the first channel 3111 at intervals along the length direction of the first channel 3111. In this embodiment, the first electrode sheet 321 and the second electrode sheet 322 are arranged in the first channel 3111 with a relatively long size, so there is no problem of inconvenient arrangement of the friction electrode assembly 32 due to too cramped space.

[0056] In some embodiments, the positions of the first electrode sheet 321 and the second electrode sheet 322 in the first channel 3111 are spaced apart by 0.5 mm to 0.9 mm. For example, the positions of the first electrode sheet 321 and the second electrode sheet 322 in the first channel 3111 are spaced apart by 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm or 0.9 mm. Under this arrangement, the first electrode sheet 321 and the second electrode sheet 322 are not spaced apart too large to easily generate electricity by friction with each other, nor are they spaced too small to cause the relative movement of the first electrode sheet 321 and the second electrode sheet 322 to be too small. Understandably, the space for relative movement of the first electrode sheet 321 and the second electrode sheet 322 is too small, which is not conducive to the improvement of the efficiency of frictional power generation.

[0057] 5, in some embodiments, the angle a between the thickness direction of the first electrode sheet 321 and the length direction of the first channel 3111 is 0° to 15°. For example, the angle a between the thickness direction of the first electrode sheet 321 and the length direction of the first channel 3111 is 0°, 2°, 5°, 9°, 10° or 15°.

[0058] The angle b between the thickness direction of the second electrode sheet 322 and the length direction of the first channel 3111 is 0° to 15°. For example, the angle b between the thickness direction of the second electrode sheet 322 and the length direction of the first channel 3111 is 0°, 2°, 5°, 9°, 10° or 15°.

[0059] In the above embodiment, setting the first electrode sheet 321 or the second electrode sheet 322 at this angle can ensure that the effective windward surface of the first electrode sheet 321 or the second electrode sheet 322 in the air flow channel 311 is large, so that the air flow can be buffered when flowing through the dust removal hole 32a, thereby helping to enhance the protection effect of the diaphragm of the microphone 20.

[0060] There are many possibilities for disposing the first electrode sheet 321 and the second electrode sheet 322 in the air flow channel 311 , as long as the relative movement of the first electrode sheet 321 and the second electrode sheet 322 can be used to generate electrical energy through friction.

[0061] For example, in some embodiments, all edges of the first electrode sheet 321 and all edges of the second electrode sheet 322 are connected to the inner wall of the first channel 3111. When the airflow flows through the dust removal hole 32a, the first electrode sheet 321 and the second electrode sheet 322 move relative to each other along the thickness direction of the first electrode sheet 321 and collide with each other, thereby generating electrical energy by friction.

[0062] For another example, as shown in combination with FIG. 6 and FIG. 7 , the first electrode sheet 321 and the second electrode sheet 322 are stacked and in contact with each other. When the airflow flows through the dust removal hole 32a, the first electrode sheet 321 and the second electrode sheet 322 remain in contact and the contact area with each other increases or decreases under the disturbance of the airflow. Since the first electrode sheet 321 and the second electrode sheet 322 remain in contact, when the contact area with each other increases or decreases, the first electrode sheet 321 and the second electrode sheet 322 move by friction with each other, thereby generating electric energy.

[0063] Furthermore, the inner wall of the airflow channel 311 is provided with a first connection portion 311b and a second connection portion 311c. The first connection portion 311b and the second connection portion 311c are staggered with each other around the length direction of the airflow channel 311. Part of the edge of the first electrode sheet 321 is connected to the first connection portion 311b, and part of the edge of the second electrode sheet 322 is connected to the second connection portion 311c. When the airflow flows through the dust removal hole 32a, the first electrode sheet 321 and the second electrode sheet 322 swing relative to the first connection portion 311b and the second connection portion 311c, respectively, so that the contact area between the first electrode sheet 321 and the second electrode sheet 322 becomes larger or smaller, so that the first electrode sheet 321 and the second electrode sheet 322 rub against each other to generate electrical energy.

[0064] It is understandable that the material of the first electrode sheet 321 and the second electrode sheet 322 is a material that can be triboelectrically charged, or the surface of the first electrode sheet 321 and the second electrode sheet 322 is coated with a material layer that can be triboelectrically charged. Triboelectrically charged materials include but are not limited to nylon and polytetrafluoroethylene. It is understandable that the first electrode sheet 321 and the second electrode sheet 322 generate positive and negative charges respectively when rubbing against each other to act as the positive electrode and the negative electrode, so that the rectifier circuit module 323 can be connected to the first electrode sheet 321 and the second electrode sheet 322 by rectifying the current generated by the flow of charges and collecting electrical energy.

[0065] Referring to FIG8 , FIG8 is a schematic diagram of the structure of an electronic device 100 provided in an embodiment of the present application. The electronic device 100 may include a radio frequency (RF) circuit 501, a memory 502 including one or more computer-readable storage media, an input unit 503, a display unit 504, a sensor 505, an audio circuit 506, a wireless fidelity (WiFi) module 507, a processor 508 including one or more processing cores, and a power supply 509. It can be understood by those skilled in the art that the structure of the electronic device 100 shown in FIG8 does not constitute a limitation on the electronic device 100, and may include more or fewer components than shown in the figure, or combine certain components, or arrange components differently.

[0066] The radio frequency circuit 501 can be used to send and receive information, or receive and send signals during a call. In particular, after receiving the downlink information of the base station, it is handed over to one or more processors 508 for processing; in addition, the data related to the uplink is sent to the base station. Generally, the radio frequency circuit 501 includes but is not limited to an antenna, at least one amplifier, a tuner, one or more oscillators, a subscriber identity module (SIM) card, a transceiver, a coupler, a low noise amplifier (LNA), a duplexer, etc. In addition, the radio frequency circuit 501 can also communicate with the network and other devices through wireless communication. The wireless communication can use any communication standard or protocol, including but not limited to the Global System of Mobile Communication (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE), email, Short Messaging Service (SMS), etc.

[0067] The memory 502 can be used to store applications and data. The applications stored in the memory 502 include executable codes. The applications can be composed of various functional modules. The processor 508 executes various functional applications and data processing by running the applications stored in the memory 502. The memory 502 can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating system, an application required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; the data storage area can store data created according to the use of the electronic device 100 (such as audio data, a phone book, etc.), etc. In addition, the memory 502 can include a high-speed random access memory, and can also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other volatile solid-state storage devices. Accordingly, the memory 502 can also include a memory controller to provide the processor 508 and the input unit 503 with access to the memory 502.

[0068] The input unit 503 can be used to receive input digital, character information or user feature information (such as fingerprints), and generate keyboard, mouse, joystick, optical or trackball signal input related to user settings and function control. Specifically, in a specific embodiment, the input unit 503 may include a touch-sensitive surface and other input devices. The touch-sensitive surface, also known as a touch display screen or a touch pad, can collect user touch operations on or near it (such as operations performed by users using fingers, styluses, or any other suitable objects or accessories on or near the touch-sensitive surface), and drive corresponding connection devices according to a pre-set program. Optionally, the touch-sensitive surface may include a touch detection device and a touch controller. Among them, the touch detection device detects the user's touch orientation, detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into touch point coordinates, and then sends it to the processor 508, and can receive and execute commands sent by the processor 508.

[0069] The display unit 504 may be used to display information input by the user or provided to the user and various graphical user interfaces of the electronic device 100, which may be composed of graphics, text, icons, videos, and any combination thereof. The display unit 504 may include the above-mentioned liquid crystal panel.

[0070] Furthermore, the touch-sensitive surface may cover a liquid crystal panel. When the touch-sensitive surface detects a touch operation on or near it, it is transmitted to the processor 508 to determine the type of touch event. The processor 508 then provides corresponding visual output on the liquid crystal panel according to the type of touch event.

[0071] Although in FIG8 , the touch-sensitive surface and the liquid crystal panel are implemented as two independent components to implement input and output functions, in some embodiments, the touch-sensitive surface and the liquid crystal panel can be integrated to implement input and output functions. It can be understood that the screen can include an input unit 503 and a display unit 504 .

[0072] The electronic device 100 may also include at least one sensor 505, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor may include an ambient light sensor and a proximity sensor, wherein the ambient light sensor may adjust the brightness of the liquid crystal panel according to the brightness of the ambient light, and the proximity sensor may turn off the liquid crystal panel and / or the backlight when the electronic device 100 is moved to the ear. As a type of motion sensor, the gravity acceleration sensor can detect the magnitude of acceleration in each direction (generally three axes), and can detect the magnitude and direction of gravity when stationary. It can be used for applications that identify the posture of the mobile phone (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer, tapping), etc.; as for other sensors such as gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc. that can also be configured in the electronic device 100, they will not be repeated here.

[0073] The audio circuit 506 can provide an audio interface between the user and the electronic device 100 through a speaker and a microphone. The audio circuit 506 can convert the received audio data into an electrical signal, transmit it to the speaker, and convert it into a sound signal for output; on the other hand, the microphone converts the collected sound signal into an electrical signal, which is received by the audio circuit 506 and converted into audio data, and then the audio data is output to the processor 508 for processing, and then sent to another electronic device 100 through the radio frequency circuit 501, or the audio data is output to the memory 502 for further processing. The audio circuit 506 may also include an earphone socket to provide communication between an external earphone and the electronic device 100.

[0074] Wireless Fidelity (WiFi) is a short-range wireless transmission technology. The electronic device 100 can help users send and receive emails, browse web pages, and access streaming media through the wireless fidelity module 507, which provides users with wireless broadband Internet access. Although FIG8 shows the wireless fidelity module 507, it is understandable that it is not a necessary component of the electronic device 100 and can be omitted as needed without changing the essence of the invention.

[0075] The processor 508 is the control center of the electronic device 100. It uses various interfaces and lines to connect various parts of the entire electronic device 100. By running or executing applications stored in the memory 502 and calling data stored in the memory 502, it executes various functions of the electronic device 100 and processes data, thereby monitoring the electronic device 100 as a whole. Optionally, the processor 508 may include one or more processing cores; preferably, the processor 508 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface, and application programs, and the modem processor mainly processes wireless communications. It is understandable that the above-mentioned modem processor may not be integrated into the processor 508.

[0076] The electronic device 100 also includes a power supply 509 for supplying power to various components. Preferably, the power supply 509 can be logically connected to the processor 508 through a power management system, so that the power management system can manage charging, discharging, and power consumption management. The power supply 509 can also include one or more DC or AC power supplies, recharging systems, power failure detection circuits, power converters or inverters, power status indicators, and other arbitrary components.

[0077] Although not shown in FIG8 , the electronic device 100 may further include a Bluetooth module, etc., which will not be described in detail here. In specific implementation, the above modules may be implemented as independent entities, or may be arbitrarily combined and implemented as the same or several entities. The specific implementation of the above modules can refer to the previous method embodiments, which will not be described in detail here.

[0078] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0079] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0080] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated 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 this application can be understood according to the specific circumstances.

[0081] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0082] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0083] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0084] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the inventive concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A sound pickup air duct structure, characterized in that: include: a tube body having an air flow channel; A friction electrode assembly includes a first electrode sheet, a second electrode sheet and a rectifier circuit module. The first electrode sheet and the second electrode sheet are provided with dust removal holes for filtering the gas flowing through the airflow channel. When the airflow flows through the dust removal holes, the first electrode sheet and the second electrode sheet move relative to each other under the action of the airflow and generate electrical energy through friction. The rectifier circuit module is electrically connected to the first electrode sheet and the second electrode sheet, and is used to collect the electrical energy generated by the friction of the first electrode sheet and the second electrode sheet.

2. The sound pickup air duct structure according to claim 1, characterized in that: The air flow channel comprises a first channel and a second channel which are interconnected, and the first channel and the second channel are arranged at an angle.

3. The sound pickup air duct structure according to claim 2, characterized in that: The first channel and the second channel are perpendicular to each other.

4. The sound pickup air duct structure according to claim 2 or 3, characterized in that: The length of the first channel is greater than that of the second channel, and the first electrode sheet and the second electrode sheet are arranged in the first channel at intervals along the length direction of the first channel.

5. The sound pickup air duct structure according to claim 4, characterized in that: The first electrode sheet and the second electrode sheet are spaced apart from each other in the first channel by 0.5 mm to 0.9 mm.

6. The sound pickup air duct structure according to claim 4, characterized in that: The angle between the thickness direction of the first electrode sheet and the length direction of the first channel is 0°~15°; and / or the angle between the thickness direction of the second electrode sheet and the length direction of the first channel is 0°~15°.

7. The sound collection air duct structure according to claim 4, characterized in that: All edges of the first electrode sheet and all edges of the second electrode sheet are connected to the inner wall of the first channel. When the airflow flows through the dust removal hole, the first electrode sheet and the second electrode sheet move relative to each other along the thickness direction of the first electrode sheet and collide with each other, thereby generating electrical energy by friction.

8. The sound pickup air duct structure according to claim 1, characterized in that: The first electrode sheet and the second electrode sheet are stacked and in contact with each other. When airflow flows through the dust removal hole, the first electrode sheet and the second electrode sheet remain in contact with each other and their contact areas increase or decrease under the disturbance of the airflow.

9. The sound collection air duct structure according to claim 8, characterized in that: The inner wall of the airflow channel is provided with a first connecting part and a second connecting part, and the first connecting part and the second connecting part are staggered with each other around the length direction of the airflow channel, a part of the edge of the first electrode sheet is connected to the first connecting part, and a part of the edge of the second electrode sheet is connected to the second connecting part, when the airflow flows through the dust removal hole, the first electrode sheet and the second electrode sheet swing relative to the first connecting part and the second connecting part respectively, so that the contact area between the first electrode sheet and the second electrode sheet becomes larger or smaller.

10. An electronic device, characterized in that: It includes a shell, a microphone and a sound pickup air duct structure as described in any one of claims 1 to 9, the shell is provided with a through hole, the air flow channel has a sound pickup port connected to the outside through the through hole, the microphone and the sound pickup air duct structure are both arranged in the space enclosed by the shell, and the microphone is arranged at one end of the air flow channel of the sound pickup air duct structure away from the sound pickup port.

11. The electronic device according to claim 10, characterized in that: The tube body of the sound-collecting air duct structure is integrally formed with the shell.

12. The electronic device according to claim 10 or 11, characterized in that: It comprises a battery, which is arranged in the space enclosed by the shell, and is electrically connected to the rectifier circuit module. The electric energy collected by the rectifier circuit module is used to charge the battery.

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