Microphone protection module and electronic equipment

Abstract

The utility model relates to a microphone protection module and electronic equipment. The microphone protection module comprises a middle frame which is provided with a sound inlet channel, and the microphone is arranged at an outlet of the sound inlet channel; the blocking part is positioned in the sound inlet channel and is used for blocking at least part of fluid entering from the inlet of the sound inlet channel; the first protection layer is located between the outlet and the microphone and covers the outlet; the first protective layer is used for buffering the fluid flowing out of the outlet. Through the microphone protection module provided by the invention, the impact of high-speed and high-pressure fluid on the microphone can be relieved, and the use of the microphone is protected.

Description

Technical Field

[0001] The present disclosure relates to the technical field of electronic product protection, and in particular to a microphone protection module and an electronic device. Background Art

[0002] With the rapid development of electronic products and the continuous improvement of people's living standards, in order to meet the functional requirements of calls, recording, voice recognition, etc., microphones are installed in many electronic devices. Among them, the microphone's sound input channel is connected to the outside, and the sound waves push the microphone diaphragm through the sound input channel to convert it into an electrical signal, which is then recorded and analyzed by the electronic device to realize audio collection.

[0003] However, in actual use, high-pressure water flow or high-pressure air flow may enter the sound inlet channel of the microphone. These high-pressure air flow or high-pressure water flow may impact the diaphragm of the microphone, causing damage to the diaphragm and affecting the normal use of the microphone. Utility Model Content

[0004] To overcome the problems existing in the related art, the present disclosure provides a microphone protection module and an electronic device. The microphone protection module proposed in the present disclosure can alleviate the impact of high-speed and high-pressure fluid on the microphone and protect the use of the microphone.

[0005] According to a first aspect of an embodiment of the present disclosure, there is provided a microphone protection module, comprising:

[0006] The middle frame has a sound inlet channel, and the microphone is arranged at the outlet of the sound inlet channel;

[0007] a blocking portion, located in the sound inlet channel, for blocking at least part of the fluid entering from the inlet of the sound inlet channel;

[0008] The first protective layer is located between the outlet and the microphone and covers the outlet; the first protective layer is used to buffer the fluid flowing out of the outlet.

[0009] In some embodiments, the first protection layer has a plurality of through holes; the plurality of through holes are distributed in an array.

[0010] In some embodiments, the first protective layer has a mounting area and a breathable area;

[0011] The air permeable area is aligned with the outlet, and the plurality of through holes are distributed in the air permeable area;

[0012] The installation area surrounds the air permeable area and is used for fixedly connecting to the outer periphery of the outlet.

[0013] In some embodiments, the apertures of the plurality of through holes are the same, and the apertures are within the preset aperture range.

[0014] In some embodiments, the preset aperture range is: 0.1mm to 0.4mm.

[0015] In some embodiments, the material of the first protective layer is polyethylene terephthalate.

[0016] In some embodiments, the blocking portion includes a fixed end and a suspended end;

[0017] Wherein, the fixed end is connected to the side wall of the sound inlet channel; and the suspended end is suspended in the sound inlet channel.

[0018] In some embodiments, the blocking portion is integrally formed with the sound inlet channel.

[0019] In some embodiments, the blocking portion includes a plurality of blocking portions, and the plurality of blocking portions are installed at intervals on the side wall of the sound inlet channel.

[0020] In some embodiments, the sidewall of the sound inlet channel includes a first sidewall and a second sidewall;

[0021] The first side wall is connected to the second side wall and is arranged opposite to the second side wall;

[0022] Among them, one of the two adjacent blocking parts is installed on the first side wall, and the other blocking part is installed on the second side wall.

[0023] In some embodiments, the sound inlet channel includes a first channel connected to the inlet and a second channel connected to the outlet, and an angle is formed between the first channel and the second channel;

[0024] The blocking portion is located in the first channel.

[0025] In some embodiments, the microphone protection module further includes:

[0026] a second protective layer, disposed between the outlet and the first protective layer, for blocking water flow or dust;

[0027] a first adhesive layer, disposed between the outer periphery of the outlet and the second protective layer;

[0028] The second adhesive layer is arranged between the second protective layer and the first protective layer.

[0029] In some embodiments, the microphone protection module further includes:

[0030] a sealing layer, disposed between the first protective layer and the microphone;

[0031] The third adhesive layer is disposed between the first protective layer and the sealing layer.

[0032] According to a second aspect of an embodiment of the present disclosure, an electronic device is provided, comprising:

[0033] The microphone protection module proposed in the first aspect above;

[0034] A back shell forms a sound cavity with the middle frame in the microphone protection module, and the sound cavity is connected to the outlet of the sound inlet channel of the middle frame;

[0035] A microphone is formed in the sound cavity.

[0036] The technical solutions provided by the embodiments of the present disclosure may have the following beneficial effects:

[0037] In an embodiment of the present disclosure, a microphone protection module for a microphone is proposed; the microphone protection module has a blocking portion arranged in the sound inlet channel of the middle frame, and the blocking portion reduces the pressure or speed of the fluid entering from the sound inlet channel by partially blocking the fluid; and the microphone protection module is also provided with a protective layer, which is used to buffer the fluid output from the sound inlet channel and to further reduce the pressure and speed of part of the fluid output from the sound inlet channel; in this way, the embodiment of the present disclosure can fully alleviate the impact of high-speed or high-pressure fluid on the microphone diaphragm by providing the blocking portion and the first protective layer, thereby providing double protection for the microphone to resist high-pressure or high-speed fluid, and improving the robustness and safety of the microphone.

[0038] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0040] Figure 1 This is an exploded diagram of the structure of a microphone protection laminate in the related art;

[0041] Figure 2 is a structural diagram of a microphone protection module according to an exemplary embodiment;

[0042] Figure 3 is a schematic structural diagram of a first protective layer according to an exemplary embodiment;

[0043] Figure 4 This is a schematic diagram of an installation of a blocking portion according to an exemplary embodiment. Figure 1 ;

[0044] Figure 5 is a mounting schematic of a blocking part according to an example embodiment Figure 2 ;

[0045] Figure 6 is an explosion structure diagram of a protection stack according to an example embodiment

[0046] Figure 7 is a structure schematic diagram of a conventional sound inlet channel in the related art

[0047] Figure 8 is a frequency response simulation schematic of a microphone according to an example embodiment Figure 1

[0048] Figure 9 is a comparison schematic diagram of a protection stack in the related art and a protection stack in the embodiments of the present disclosure

[0049] Figure 10 is a frequency response simulation schematic of a microphone according to an example embodiment Figure 2 ;

[0050] Figure 11 is a structure block diagram of an electronic device according to an example embodiment DETAILED DESCRIPTION

[0051] The example embodiments will be described in detail herein, with examples shown in the drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following example embodiments do not represent all implementations consistent with the present disclosure. Instead, they are merely examples of apparatuses and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0052] For the microphone protection device in the conventional electronic device, a protection stack is usually arranged at the outlet of the sound inlet channel; see Figure 1 , Figure 1 is a structure explosion diagram of a microphone protection stack in the related art; as shown in Figure 1 , the conventional protection stack T includes a protection film T1, a foam T2, and an adhesive layer T3 for pasting and fixing; here, the protection film T1 can be arranged as a single-layer gauze, which can be used for dust prevention; in the electronic device with waterproof requirements, the protection film T1 can also be arranged as a waterproof film.

[0053] However, in this design, under extreme conditions of the electronic device, such as windy weather or deep water environment, high-pressure airflow or high-pressure water flow will break the protection film and the foam, causing damage to the diaphragm of the microphone itself.

[0054] Therefore, the microphone protection module is provided in the embodiments of the present disclosure. The microphone protection module can alleviate the impact of high-speed and high-pressure fluid on the microphone and protect the use of the microphone.

[0055] Referring to Figure 2 , Figure 2 FIG. 1 is a structural schematic diagram of a microphone protection module according to an example embodiment. The microphone protection module 1 provided in the embodiments of the present disclosure includes:

[0056] a middle frame 11 having a sound inlet channel 111, and the microphone 2 is arranged at an outlet 111a of the sound inlet channel 111;

[0057] a blocking part 12 arranged in the sound inlet channel 111 and used for blocking at least part of fluid entering from an inlet 111b of the sound inlet channel 111;

[0058] a first protection layer 13 arranged between the outlet 111a and the microphone 2 and covering the outlet 111a, and the first protection layer 13 is used for buffering fluid flowing out of the outlet 111a.

[0059] Here, the microphone protection module provided in the embodiments of the present disclosure is applied in an electronic device, and is used for buffering high-speed and high-pressure fluid (such as gas or liquid) entering from a sound inlet channel when the electronic device is in an extreme condition such as a windy day or a deep water environment, so as to protect a diaphragm of a microphone and improve the use robustness of the microphone.

[0060] The electronic device includes a fixed terminal, a mobile terminal, or a portable device. The fixed terminal includes but is not limited to a vehicle-mounted terminal, a television, and the like. The mobile terminal includes but is not limited to a mobile phone, a tablet computer, and the like. The portable device includes but is not limited to a smart watch, and the like. The embodiments of the present disclosure do not make further limitation.

[0061] In the embodiments of the present disclosure, when the microphone protection module is applied in an electronic device, the above-mentioned middle frame is used as a bearing part in the electronic device and is used for bearing a plurality of functional modules arranged in the electronic device, such as a processing module (central processing unit CPU), a heat dissipation module, a battery module, and the like, and for example, the above-mentioned microphone. The above-mentioned middle frame is provided with a sound inlet channel at the top or side of the electronic device, and the above-mentioned microphone is arranged at an outlet of the sound inlet channel and is used for receiving sound waves output by the outlet of the sound inlet channel to realize picking up of external sound.

[0062] Here, the sound inlet channel can have one section for directly conveying external sound waves to the outlet. The sound inlet channel can also be provided with multiple sections, and the multiple sections are connected to each other in a bending manner, so that the internal layout of the electronic device is more flexible.

[0063] In the embodiments of the present disclosure, at least one blocking part is arranged in the sound inlet channel, which can partially block the fluid, especially high-speed and high-pressure gas, or high-speed and high-pressure liquid (for example, water) entering from the inlet of the sound inlet channel, so as to reduce the speed of the high-speed fluid or the pressure of the high-pressure fluid, thereby reducing the speed and pressure of the fluid flowing to the outlet.

[0064] It should be noted that, because the solid also has the effect of conducting sound waves, the performance of the sound inlet channel in conducting sound waves is less affected by the design of the solid blocking part, that is, the embodiments of the present disclosure can maintain the effectiveness and stability of sound wave conduction while protecting the diaphragm of the microphone.

[0065] Here, the blocking part in the embodiments of the present disclosure is arranged on the side wall of the sound inlet channel; in some examples, a gap is left between the blocking part and the side wall, so that part of the fluid is blocked by the blocking part, and another part of the fluid can flow to the opening through the gap; in other examples, there is no gap between the blocking part and the side wall, but the blocking part itself is provided with a plurality of air-permeable small holes, at this time, part of the fluid is blocked by the blocking part, and another part of the fluid can flow through the air-permeable small holes.

[0066] In the embodiments of the present disclosure, the shape of the blocking part is not limited, for example, the blocking part can be arranged as a regular structure such as a cuboid, a square, a cone, a sphere, a cylinder, etc., and the blocking part can also be arranged as an irregular structure, which is not limited in the embodiments of the present disclosure.

[0067] Taking the cuboid shape of the blocking part as an example, the blocking part includes a blocking surface and a connecting surface connected with the blocking surface; wherein the blocking surface is opposite to the opening of the sound inlet channel, that is, the blocking surface is perpendicular to the fluid flow direction or has a preset angle; and at least one connecting surface is communicated with the side wall of the sound inlet channel.

[0068] In actual implementation, in order to improve the blocking effect on high-pressure and high-speed fluid, the embodiments of the present disclosure can arrange the surface with larger area in the cuboid-shaped blocking part as the above-mentioned blocking surface.

[0069] In the embodiments of the present disclosure, the microphone protection module further comprises a first protection layer, which is arranged between the outlet of the sound inlet channel and the microphone and covers the outlet.

[0070] Here, the first protection layer has the effect of buffering high-pressure and high-speed fluid, which can reduce the pressure of part of the high-pressure fluid flowing out of the outlet of the sound inlet channel, or reduce the speed of part of the high-speed fluid flowing out of the outlet of the sound inlet channel. In this way, the double protection effect on the diaphragm of the microphone is achieved, and the use safety of the microphone is improved.

[0071] Illustratively, the first protective layer may be a polyethylene (PE) film, a polyvinyl chloride (PVC) film, a biaxially oriented polypropylene (BOPP) film, etc., which is not limited in the embodiments of the present disclosure.

[0072] In the embodiment of the present disclosure, a circuit board is further provided between the first protective layer and the microphone, and the circuit board is capable of generating an electrical signal based on the vibration of the microphone diaphragm.

[0073] In an embodiment of the present disclosure, a microphone protection module for a microphone is proposed; the microphone protection module has a blocking portion arranged in the sound inlet channel of the middle frame, and the blocking portion reduces the pressure or speed of the fluid entering from the sound inlet channel by partially blocking the fluid; and the microphone protection module is also provided with a protective layer, which is used to buffer the fluid output from the sound inlet channel and to further reduce the pressure and speed of part of the fluid output from the sound inlet channel; in this way, the embodiment of the present disclosure can fully alleviate the impact of high-speed or high-pressure fluid on the microphone diaphragm by providing the blocking portion and the first protective layer, thereby providing double protection for the microphone to resist high-pressure or high-speed fluid, and improving the robustness and safety of the microphone.

[0074] In some embodiments, see Figure 3 , Figure 3 1 is a schematic structural diagram of a first protective layer according to an exemplary embodiment; wherein the first protective layer 13 has a plurality of through holes 131; and the plurality of through holes 131 are distributed in an array.

[0075] Here, a plurality of through holes are provided in the first protective layer, and the plurality of through holes have the functions of being air-permeable and sound-permeable, so that sound waves and part of the gas after decompression and deceleration can circulate in the sound cavity of the microphone. In the embodiment of the present disclosure, in order to achieve sufficient and even buffering of the fluid flowing out of the outlet, a plurality of through holes are provided to be distributed in an array. Among them, the array distribution is that there is a preset interval between adjacent through holes, and the plurality of through holes are arranged according to the preset interval to show a symmetrical distribution; for example, when the plurality of through holes is 4, the plurality of through holes are distributed in an array to form 2 rows and 2 columns, and the interval between any two through holes is the same; for another example, the through holes in the present disclosure can be nine, such as Figure 3 As shown, the nine through holes 131 are distributed in 3 rows and 3 columns, and the intervals between two adjacent through holes 131 are the same. The nine through holes are distributed to form a symmetrical array shape.

[0076] In this way, by distributing multiple through holes in an array with equal spacing, multiple through holes can be used to disperse high-pressure or high-speed fluids evenly in multiple directions. Compared with randomly designed through hole positions, on the one hand, it makes the structural design more regular and the production yield higher. On the other hand, it can also reduce the impact of vortices formed by random gas circulation on sound collection, thereby improving the effectiveness of the microphone in sound collection.

[0077] In some embodiments, combined Figure 3 , the first protective layer 13 has a mounting area 132 and a breathable area 133;

[0078] The air permeable area 133 is aligned with the outlet 111a, and the plurality of through holes 131 are distributed in the air permeable area 133;

[0079] The mounting area 132 surrounds the vent area 133 for fixing the connection outlet ( Figure 3 not shown).

[0080] Here, the breathable area of ​​the first protective layer is arranged in the central area of ​​the first protective layer, and the installation area is arranged at the outer edge of the first protective layer and surrounds the breathable area; wherein, the materials of the installation area and the breathable area can be the same or different, and the embodiment of the present disclosure does not limit this.

[0081] Among them, the breathable area is aligned with the outlet of the above-mentioned sound inlet channel, and the area of ​​the breathable area is the same as the cross-sectional area of ​​the outlet, or slightly larger than the cross-sectional area of ​​the outlet; the above-mentioned multiple through holes are distributed in the breathable area, and are used to block high-pressure or high-speed fluid through the part outside the through holes in the breathable area, and disperse the fluid through the through holes.

[0082] In the embodiment of the present disclosure, the middle frame also includes a middle frame body. The above-mentioned middle frame channel is formed on the middle frame body, and the middle frame body can carry different functional modules or devices. Here, the installation area is fixed on the middle frame body, specifically fixed to the part of the middle frame body distributed on the periphery of the middle frame channel outlet.

[0083] The embodiment of the present disclosure distributes a plurality of through holes in the central air permeable area of ​​the first protective layer, thereby reducing adverse effects on the microphone caused by fluid flowing into the microphone from other locations.

[0084] In some embodiments, the apertures of the plurality of through holes are the same and are within a preset aperture range.

[0085] Here, the multiple through holes have the same shape and the corresponding apertures are the same; for example, the multiple through holes are circular and the diameters of the through holes are the same; for another example, the multiple through holes are elliptical and the lengths of the major axis and minor axis of the through holes are the same; for another example, the multiple through holes are rectangular and the side lengths of the through holes are the same.

[0086] The embodiment of the present disclosure sets the apertures of the array-arranged through holes to be the same size and within a preset aperture range, which can fully and evenly disperse the high-pressure or high-speed fluid in multiple directions, thereby improving the effect of the first protective layer in buffering the high-pressure or high-speed fluid.

[0087] In some embodiments, the preset aperture range is: 0.1 mm to 0.4 mm.

[0088] In some examples, the plurality of through holes are circular holes, and the diameter of each through hole is 0.3 millimeters (mm).

[0089] In other examples, such as Figure 3 As shown, the plurality of through holes 131 are 9 circular holes, and the apertures of the 9 through holes 131 are all set to 0.2 millimeters (mm). Here, in order to adapt to the actual structure of the electronic device, the embodiment of the present disclosure constrains the sizes of the installation area 132 and the breathable area 133. Among them, the length / width of the breathable area 133 can be set between 1.489mm and 1.500mm. The length / width of the installation area 132 can be set to 3.500mm. Here, the corner position of the installation area 132 of the first protective layer 13 can be set to an arc shape, wherein the curvature radius of the arc of the corner of the installation area 132 can be set to 1.200mm.

[0090] The embodiment of the present disclosure sets the preset aperture range within 0.1 mm to 0.4 mm, which can not only effectively buffer the fluid and balance the fluid flow and pressure, but also ensure the acoustic performance of the microphone as much as possible.

[0091] In some embodiments, the material of the first protective layer is polyethylene terephthalate.

[0092] Polyethylene terephthalate (PET) exhibits excellent barrier properties due to its symmetrical chemical structure, well-planarized molecular chains, densely packed molecular chains, and easy crystallization orientation. This barrier property is demonstrated not only against inorganic gases (such as nitrogen and carbon dioxide), but also against water vapor and organic matter. Therefore, the PET protective layer effectively slows the penetration of high-pressure or high-velocity fluids exiting the sound inlet channel.

[0093] In addition, PET material also has a certain compressive strength and can withstand external pressure without deformation or cracking.

[0094] In the embodiment of the present disclosure, by setting the material of the first protective layer to PET material, the impact of external fluid on the microphone can be effectively resisted, thereby improving the protection effect of the microphone.

[0095] In some embodiments, the blocking portion includes a fixed end and a suspended end;

[0096] The fixed end is connected to the side wall of the sound inlet channel; and the suspended end is suspended in the sound inlet channel.

[0097] In the embodiment of the present disclosure, the blocking portion can partially block the fluid; wherein the blocking portion includes a fixed end and a suspended end, the fixed end is used to achieve the fixing effect of the blocking portion in the sound inlet channel, and the suspended end is suspended in the sound inlet channel.

[0098] Here, in some examples, the fixed end can be directly fixed on the side wall of the sound inlet channel, for example, by being bonded on the side wall of the sound inlet channel through a bonding member, or being fixed on the side wall of the sound inlet channel through a fixing member such as a screw; in other examples, the fixed end can also be indirectly fixed on the side wall of the sound inlet channel through a support structure.

[0099] The blocking part in the embodiments of the present disclosure has a fixed end and a free end, which can not only realize the installation stability of the blocking part, but also form a gap between the free end and the sound inlet channel, thereby improving the effectiveness of sound wave transmission.

[0100] In some embodiments, the blocking part is integrally formed with the sound inlet channel.

[0101] For example, the blocking part is provided with one, and one blocking part is made by inwardly recessing the side wall of the sound inlet channel through a designated mold.

[0102] Referring to Figure 4 , Figure 4 is a schematic diagram of the installation of a blocking part according to an example embodiment Figure 1 ; wherein the blocking part 12 is provided with one, Figure 4 The arrow direction shown is the flow direction of the fluid.

[0103] Here, by integrally forming the blocking part with the sound inlet channel, on the one hand, the installation difficulty of the blocking part can be simplified, and the manufacturing efficiency of the microphone protection module and the electronic device can be improved, and on the other hand, the adverse effects caused by unstable installation and falling of the blocking part can be reduced, thereby reducing the after-sales rate of the electronic device.

[0104] In some embodiments, the blocking part includes a plurality of, and the plurality of blocking parts are spaced apart and installed on the side wall of the sound inlet channel.

[0105] Here, when the blocking part is provided with a plurality of, in order to simplify the complexity of the middle frame mold and reduce the difficulty of manufacturing the middle frame, the embodiments of the present disclosure can manufacture a plurality of blocking parts, and the plurality of blocking parts are separately spaced apart and installed on the side wall of the sound inlet channel.

[0106] Among them, the material of the plurality of blocking parts and the material of the middle frame can be the same or different, and the embodiments of the present disclosure do not limit this. For example, the material of the plurality of blocking parts and the material of the middle frame can both be magnesium alloy MDA plastic.

[0107] It should be noted that to ensure installation stability, in some examples, the present disclosure may include a strong adhesive layer, such as a polymer waterproof adhesive or a nano-silicon waterproof adhesive layer, to bond the barrier portion to the sidewall of the sound inlet channel. In other examples, the present disclosure may also include a slot on the sidewall and a raised portion on the fixed end of the barrier portion. By placing the raised portion in the slot, a snap-fit ​​connection or interference fit connection between the barrier portion and the sidewall is achieved.

[0108] In the embodiment of the present disclosure, a plurality of spaced blocking portions are provided on the side wall of the sound inlet channel, and the intervals between adjacent blocking portions may be the same or different.

[0109] For example, see Figure 5 , Figure 5 This is a schematic diagram of an installation of a blocking portion according to an exemplary embodiment. Figure 2 Wherein, a plurality of blocking portions 12 are spaced apart on the side walls of the sound inlet channel 111, Figure 5 The direction of the arrows shown is the flow direction of the fluid.

[0110] Here, by setting up multiple blocking parts and installing them at intervals on the side walls of the sound inlet channel, the complexity of the middle frame mold is reduced, and the difficulty of making the middle frame is further reduced compared to the design of integrally forming the blocking parts and the middle frame; in addition, setting up multiple blocking parts can enhance the blocking ability against high-pressure or high-speed fluids from the outside, and improve the speed and pressure reduction effect.

[0111] In other embodiments, when only one blocking portion is provided, the blocking portion may be provided separately and be arranged on the side wall of the sound inlet channel by a fixed connection method such as bonding or snap connection.

[0112] In some embodiments, combined Figure 5 , the side wall of the sound inlet channel 111 includes a first side wall 111c and a second side wall 111d;

[0113] The first side wall 111c is connected to the second side wall 111d and is disposed opposite to the second side wall 111d;

[0114] Among them, one of the two adjacent blocking portions 12 is installed on the first side wall 111 c , and the other blocking portion 12 is installed on the second side wall 111 d .

[0115] Here, the shape of the sound inlet channel can be a cylinder or a rectangular parallelepiped, etc., and of course it can also be other shapes, and the embodiments of the present disclosure do not limit this; taking the sound inlet channel as a cylinder as an example, the above-mentioned first side wall and second side wall are arc-shaped side walls, and the first side wall and the second side wall are arranged opposite to each other and are connected to each other, together forming a complete side wall of the sound inlet channel.

[0116] here, Figure 5A cross-sectional view of the side wall of the sound inlet channel 111 is shown, and a plurality of blocking portions 12 are arranged on the side wall; here, each of the plurality of blocking portions 12 has a fixed end and a free end; the fixed ends of two adjacent blocking portions 12 are respectively mounted on the first side wall 111c and the second side wall 111d; and the free end of each blocking portion 12 is arranged in the sound inlet channel 111.

[0117] In the embodiments of the present disclosure, by arranging the plurality of blocking portions staggered on the first side wall and the second side wall, a plurality of S-shaped channels are formed, the flow path of the fluid in the sound inlet channel is increased, and the flow rate of the fluid is effectively reduced.

[0118] In the embodiments of the present disclosure, the sound inlet channel includes at least two sections, and the at least two sections of the sound inlet channel can be arranged to avoid the functional chip, the camera module mounting structure, etc. in the electronic device.

[0119] In some embodiments, the sound inlet channel includes a first channel communicating with the inlet and a second channel communicating with the outlet, and the first channel and the second channel have an included angle therebetween;

[0120] The blocking portion is located in the first channel.

[0121] Here, Figure 2 The included angle between the first channel 111e and the second channel 111f shown is an acute angle; Figure 4 and Figure 5 The included angle between the first channel 111e and the second channel 111f shown is a right angle.

[0122] In the embodiments of the present disclosure, the first channel is a channel close to and communicating with the inlet of the entire sound inlet channel, the sound outlet of the first channel communicates with the sound inlet of the second channel, and the second channel is a channel close to and communicating with the outlet of the entire sound inlet channel. In the embodiments of the present disclosure, one or more blocking portions are arranged in the first channel, so that the vortex formed by the blocking portion close to the outlet is reduced, thereby reducing the interference with the sound collection function of the microphone itself.

[0123] In some embodiments, referring to Figure 6 , Figure 6 is an explosion structure diagram of a protection stack according to an exemplary embodiment; wherein, in combination Figure 6 and Figure 2 The microphone protection module 1 further comprises:

[0124] The second protection layer 14 is arranged between the outlet 111a and the first protection layer 13, and is used to block water flow or block dust;

[0125] The first adhesive layer 15 is arranged between the outer periphery of the outlet 111a and the second protection layer 14;

[0126] The second adhesive layer 16 is provided between the second protective layer 14 and the first protective layer 13 .

[0127] It should be noted that the first protective layer, the second protective layer, the first adhesive layer, the second adhesive layer and the sealing layer proposed below in the embodiment of the present disclosure can be encapsulated in a protective laminate; the exploded diagram of the protective laminate M is as shown in FIG. Figure 6 shown.

[0128] Here, the first protective layer includes a waterproof membrane and / or a dustproof net; wherein, the waterproof membrane can prevent external water vapor, dust and other impurities from entering the microphone and affecting the microphone; the waterproof membrane proposed in the embodiment of the present disclosure has sound-transmitting properties, which can ensure effective sound wave transmission while being waterproof and dustproof.

[0129] Wherein, the material of the above-mentioned waterproof membrane can be expanded polytetrafluoroethylene.

[0130] In the disclosed embodiment, the dustproof net has a microporous structure with evenly distributed and dense micropores, which can prevent external dust from entering the microphone and allow sound to pass through.

[0131] In the embodiment of the present disclosure, the first adhesive layer and the second adhesive layer are both double-sided adhesive, which are used to stick and fix the structures on both sides of the adhesive layer; the materials of the first adhesive layer and the second adhesive layer can be the same or different; illustratively, the first adhesive layer and the second adhesive layer can both be back glue formed by hot melt adhesive.

[0132] It should be noted that the central areas of the first adhesive layer and the second adhesive layer both have hollow portions aligned with the air permeable area of ​​the first protective layer for sound and air permeability.

[0133] The embodiment of the present disclosure enhances the protection of the microphone by providing a first protective layer, a first adhesive layer, and a second adhesive layer, thereby further ensuring the safety of the microphone during use.

[0134] In some embodiments, combined Figure 6 , the microphone protection module 1 also includes:

[0135] a sealing layer 17, disposed between the first protective layer 13 and the microphone;

[0136] The third adhesive layer 18 is provided between the first protective layer 13 and the sealing layer 17 .

[0137] Here, the sealing layer can be set as a sealing gasket or sealing foam, which can play a role in buffering and shock absorption. The third adhesive layer can improve the tightness of the sealing layer and the first protective layer.

[0138] The material of the third adhesive layer can be the same as or different from that of the first adhesive layer and the second adhesive layer; and the central area of ​​the third adhesive layer also has a portion aligned with the breathable area of ​​the first protective layer for sound and air permeability.

[0139] The sealing layer provided in the embodiment of the present disclosure can not only play a role in buffering and shock absorption, but also realize the sealing effect of the protective laminate on the microphone, reducing external moisture / dust from entering the microphone through the installation gap between the protective laminate and the microphone, thereby improving the safety of the microphone.

[0140] An embodiment of the present disclosure further provides an electronic device, the electronic device comprising:

[0141] The microphone protection module proposed in the first aspect above;

[0142] The back shell forms a sound cavity with the middle frame in the microphone protection module, and the sound cavity is connected to the outlet of the sound inlet channel of the middle frame;

[0143] A microphone is formed in the sound cavity.

[0144] Here, electronic devices may include mobile phones, computers, watches, etc. Please refer to the above examples of the present disclosure, and the embodiments of the present disclosure will not be further described here.

[0145] Among them, the electronic device includes a middle frame and a back shell, and the back shell is used to protect the functional components in the electronic device; usually, the middle frame and the back shell have a gap on the top or side of the electronic device, and this gap can form a sound cavity, which is connected to the outlet of the sound inlet channel. The sound waves enter the sound cavity through the sound inlet channel set in the middle frame and are transmitted to the microphone formed in the sound cavity, so that the diaphragm of the microphone vibrates to achieve sound pickup.

[0146] In the electronic device proposed in the embodiment of the present disclosure, the microphone can effectively collect external sounds to realize functions such as calls and recordings; the microphone protection module buffers the external fluid through the blocking part and the first protective layer, alleviates the impact of high-speed and high-pressure fluid on the microphone, and protects the use of the microphone.

[0147] In combination with the above description of the present disclosure, an example of applying the microphone protection module proposed in the embodiment of the present disclosure in a mobile phone is described below.

[0148] See this disclosure Figure 2 to Figure 6As shown, the embodiment of the present disclosure sets a microphone protection module 1 at the location of the microphone 2 of the mobile phone. The microphone protection module 1 includes at least one blocking portion 12 (which can be understood as a blocking wall) in the sound inlet channel 111 of the middle frame 11. The at least one blocking portion 12 effectively increases the microphone's protection threshold against high-pressure airflow and water pressure, thereby preventing the microphone membrane from breaking. In addition, the embodiment of the present disclosure also sets a protective laminate M between the outlet 111a of the sound inlet channel 111 and the microphone 2. The protective laminate M not only includes a second protective layer 14 for waterproofing and dustproofing, a sealing layer 17 for buffering and sealing, and a first adhesive layer 15, a second adhesive layer 16, and a third adhesive layer 18 for bonding and fixing, but also a first protective layer 13 for buffering high-pressure / high-speed gas or high-pressure / high-speed liquid. Here, the first protective layer is a PE film, which is provided with a plurality of through holes 131 with a diameter of 0.2 mm. The number of the plurality of through holes 131 is not less than 9. For example, the 9 through holes 131 are arranged in an array of 3 rows and 3 columns.

[0149] See also Figure 7 , Figure 7 is a schematic structural diagram of a conventional sound input channel according to an exemplary embodiment; Figure 7 The sound inlet channel 111 shown in the figure is not provided with a blocking part, and the direction of the arrow is the direction of fluid flow. Figure 7 The fluid velocity at the outlet of the sound inlet channel 111 is shown to be 69.54 m / s; Figure 4 The fluid flow rate at the outlet of the sound inlet channel 111 with one blocking portion 12 is 36.49 m / s; Figure 5 The fluid flow rate at the outlet of the sound inlet channel 111 with three blocking portions 12 is 26.94 m / s. Thus, the at least one blocking portion provided in the embodiment of the present disclosure can sufficiently slow down the fluid flow rate.

[0150] It should be noted that the above-mentioned blocking portion can effectively ensure the acoustic performance of the microphone while sufficiently slowing down the flow rate of the fluid. Figure 8 , Figure 8 A frequency response simulation diagram of a microphone according to an exemplary embodiment is shown. Figure 1 ;like Figure 8 As shown, the horizontal axis represents the sound frequency (in Hertz Hz), and the vertical axis represents the sound loudness (in dB). Figure 7 In the case of the sound input channel shown in FIG, the frequency response curve of the sound collected by the microphone; Curve 82 is ... Figure 4 In the case of the sound input channel shown in FIG, the frequency response curve of the sound collected by the microphone; Curve 83 is the frequency response curve of the sound collected by the microphone; Curve 84 is the frequency response curve of the sound collected by the microphone; Curve 85 is the frequency response curve of the sound collected by the microphone; Curve 86 is the frequency response curve of the sound collected by the microphone; Curve 87 is the frequency response curve of the sound collected by the microphone; Curve 88 is the frequency response curve of the sound Figure 5 In the case of the sound input channel shown in the figure, the frequency response curve of the sound collected by the microphone is shown in the figure.Figure 8 It can be seen that the provision of the blocking portion has little effect on the frequency response of the microphone collecting sound.

[0151] Combine Figure 7 and Figure 8 It can be seen that after adding the blocking part 12 to the sound inlet channel 111, the air flow velocity flowing in the sound inlet channel can be reduced from 69m / s to 26m / s, which can reduce the risk of microphone membrane rupture and will not have a significant impact on the acoustic performance of the microphone.

[0152] See also Figure 9 , Figure 9 Schematic diagram comparing the effects of the protective laminate in the related art and the protective laminate in the embodiment of the present disclosure; wherein, in the related art that does not propose the first protective layer, i.e., the PET film layer, an air pressure of 0.4 MPa will cause a small portion of damage to the conventional protective laminate T and the diaphragm of the microphone 2; an air pressure of 0.55 MPa will cause a large range of damage to the conventional protective laminate T and the diaphragm of the microphone 2; and an air pressure of 0.6 MPa will cause the conventional protective laminate T and the diaphragm of the microphone 2 to rupture. After adding the above-mentioned first protective layer, according to Figure 9 As shown, the protective laminate M (including the first protective layer, second protective layer, sealing layer, first adhesive layer, second adhesive layer, and third adhesive layer) and the microphone 2 diaphragm, as proposed in the embodiments of the present disclosure, have improved their ability to withstand high-pressure airflow. This is demonstrated by the fact that neither the protective laminate M nor the microphone 2 diaphragm exhibits significant damage at air pressures between 0.4 MPa and 0.6 MPa. Furthermore, testing has shown that the microphone diaphragm's resistance to high-pressure airflow has increased by 0.15 MPa, and the second protective layer, such as the waterproof membrane, has increased its resistance to high-pressure airflow by 0.2 MPa.

[0153] See also Figure 10 , Figure 10 A frequency response simulation diagram of a microphone according to an exemplary embodiment is shown. Figure 2 .in, Figure 10 The horizontal axis represents the sound frequency (in Hertz Hz), and the vertical axis represents the sound loudness (in dB); Curve 101 is the frequency response curve of the sound collected by the microphone under the protection of the traditional protection laminate T; Curve 102 is the frequency response curve of the sound collected by the microphone under the protection of the protection laminate M proposed in the present disclosure; Figure 10 As shown, the PET film has little effect on the frequency response of the microphone collecting sound, that is, the protective film layer after the PET film is set in the present invention can still effectively guarantee the acoustic performance of the microphone.

[0154] Figure 111 is a block diagram of an electronic device according to an exemplary embodiment. For example, the electronic device 1100 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

[0155] Reference Figure 11 , the electronic device 1100 may include one or more of the following components: a processing component 1102 , a memory 1104 , a power component 1106 , a multimedia component 1108 , an audio component 1110 , an input / output interface 1112 , a sensor component 1114 , and a communication component 1116 .

[0156] The processing component 1102 generally controls the overall operation of the electronic device 1100, such as operations associated with at least one of display, phone calls, data communications, camera operation, and recording operations. The processing component 1102 may include one or more processors 1120 to execute instructions to perform all or part of the steps of the above-described method. In addition, the processing component 1102 may include one or more modules to facilitate interaction between the processing component 1102 and other components. For example, the processing component 1102 may include a multimedia module to facilitate interaction between the multimedia component 1108 and the processing component 1102.

[0157] The memory 1104 is configured to store various types of data to support operations on the electronic device 1100. Examples of such data include at least one of the following: instructions for any application or method operating on the electronic device 1100, contact data, phone book data, messages, pictures, and videos. The memory 1104 can be implemented by any type of volatile or non-volatile storage device, or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk, or optical disk.

[0158] The power supply component 1106 provides power to various components of the electronic device 1100. The power supply component 1106 may include at least one of the following: a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to the electronic device 1100.

[0159] The multimedia component 1108 includes a screen that provides an output interface between the electronic device 1100 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, slides, and gestures on the touch panel. The touch sensor can not only sense the boundaries of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 1108 includes a front camera and / or a rear camera. When the electronic device 1100 is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera can receive external multimedia data. Each front camera and rear camera can be a fixed optical lens system or have focal length and optical zoom capabilities.

[0160] The audio component 1110 is configured to output and / or input audio signals. For example, the audio component 1110 includes a microphone (MIC), which is configured to receive external audio signals when the electronic device 1100 is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal can be further stored in the memory 1104 or transmitted via the communication component 1116. In some embodiments, the audio component 1110 also includes a speaker for outputting audio signals.

[0161] The input / output interface 1112 provides an interface between the processing component 1102 and peripheral interface modules, such as a keyboard, a click wheel, and buttons. These buttons may include, but are not limited to, a home button, a volume button, a start button, and a lock button.

[0162] Sensor assembly 1114 includes one or more sensors for providing various aspects of the status assessment of electronic device 1100. For example, sensor assembly 1114 can detect the open / closed state of electronic device 1100, the relative positioning of components, such as the display and keypad of electronic device 1100. Sensor assembly 1114 can also detect changes in the position of electronic device 1100 or a component thereof, the presence or absence of user contact with electronic device 1100, the orientation or acceleration / deceleration of electronic device 1100, and changes in the temperature of electronic device 1100. Sensor assembly 1114 can include a proximity sensor configured to detect the presence of nearby objects without any physical contact. Sensor assembly 1114 can also include an optical sensor, such as a complementary metal oxide semiconductor (CMOS) or charge coupled device (CCD) image sensor, for use in imaging applications. In some embodiments, sensor assembly 1114 can also include, but is not limited to, at least one of the following: an accelerometer, a gyroscope, a magnetic sensor, a pressure sensor, and a temperature sensor.

[0163] The communication component 1116 is configured to facilitate communication between the electronic device 1100 and other devices in a wired or wireless manner. The electronic device 1100 can access a wireless network based on a communication standard, such as Wi-Fi, 4G, 5G, or a combination thereof. In an exemplary embodiment, the communication component 1116 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 1116 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

[0164] In an exemplary embodiment, the electronic device 1100 may be implemented by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components.

[0165] Other embodiments of the present disclosure will readily occur to those skilled in the art after considering the specification and practicing the utility model disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the present disclosure being indicated by the claims.

[0166] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A microphone protection module, characterized in that: include: The middle frame has a sound inlet channel, and the microphone is arranged at the outlet of the sound inlet channel; a blocking portion, located in the sound inlet channel, for blocking at least part of the fluid entering from the inlet of the sound inlet channel; The first protective layer is located between the outlet and the microphone and covers the outlet; the first protective layer is used to buffer the fluid flowing out of the outlet.

2. The microphone protection module according to claim 1, wherein: The first protection layer has a plurality of through holes; the plurality of through holes are distributed in an array.

3. The microphone protection module according to claim 2, wherein: The first protective layer has a mounting area and a breathable area; The air permeable area is aligned with the outlet, and the plurality of through holes are distributed in the air permeable area; The installation area surrounds the air permeable area and is used for fixedly connecting to the outer periphery of the outlet.

4. The microphone protection module according to claim 2, wherein: The apertures of the plurality of through holes are the same, and the apertures are within a preset aperture range.

5. The microphone protection module according to claim 4, characterized in that: The preset aperture range is: 0.1mm to 0.4mm.

6. The microphone protection module according to any one of claims 1 to 5, characterized in that: The material of the first protective layer is polyethylene terephthalate.

7. The microphone protection module according to any one of claims 1 to 5, characterized in that: The blocking portion includes a fixed end and a suspended end; Wherein, the fixed end is connected to the side wall of the sound inlet channel; and the suspended end is suspended in the sound inlet channel.

8. The microphone protection module according to any one of claims 1 to 5, characterized in that: The blocking portion is integrally formed with the sound inlet channel.

9. The microphone protection module according to any one of claims 1 to 5, characterized in that: The blocking portion includes a plurality of blocking portions, and the plurality of blocking portions are installed at intervals on the side wall of the sound inlet channel.

10. The microphone protection module according to claim 9, characterized in that: The side wall of the sound inlet channel includes a first side wall and a second side wall; The first side wall is connected to the second side wall and is arranged opposite to the second side wall; Among them, one of the two adjacent blocking parts is installed on the first side wall, and the other blocking part is installed on the second side wall.

11. The microphone protection module according to any one of claims 1 to 5, characterized in that: The sound inlet channel includes a first channel connected to the inlet and a second channel connected to the outlet, and an angle is formed between the first channel and the second channel; The blocking portion is located in the first channel.

12. The microphone protection module according to any one of claims 1 to 5, characterized in that: The microphone protection module also includes: a second protective layer, disposed between the outlet and the first protective layer, for blocking water flow or dust; a first adhesive layer, disposed between the outer periphery of the outlet and the second protective layer; The second adhesive layer is arranged between the second protective layer and the first protective layer.

13. The microphone protection module according to claim 12, wherein: The microphone protection module also includes: a sealing layer, disposed between the first protective layer and the microphone; The third adhesive layer is disposed between the first protective layer and the sealing layer.

14. An electronic device, characterized in that: include: The microphone protection module according to any one of claims 1 to 13; A back shell forms a sound cavity with the middle frame in the microphone protection module, and the sound cavity is connected to the outlet of the sound inlet channel of the middle frame; A microphone is formed in the sound cavity.

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