CN214335480U

CN214335480U - Waterproof sealing assembly and electronic equipment

Info

Publication number: CN214335480U
Application number: CN202120710720.2U
Authority: CN
Inventors: 钟小峰; 方福平; 范伟
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-04-07
Filing date: 2021-04-07
Publication date: 2021-10-01
Anticipated expiration: 2031-04-07

Abstract

The application discloses waterproof sealing assembly and electronic equipment, waterproof sealing assembly includes: a housing having a sound guide hole; the breathable film bracket is provided with a groove at one side close to the shell and a through hole communicated with the groove at one side away from the shell; the waterproof breathable membrane component is fixed in the groove and covers the opening of the through hole communicated with the groove, and the thickness of the waterproof breathable membrane component is smaller than or equal to the depth of the groove; the electroacoustic component is fixed on one side of the shell, which is adjacent to the inner surface; and the elastic sealing piece is sealed between the electroacoustic assembly and the breathable film bracket, and the elastic compression amount of the elastic sealing piece is controlled to be a preset deformation amount. The utility model discloses a mode seal assembly can prevent that waterproof ventilated membrane subassembly from warping, and the ventilated membrane support also seals more firmly with the casing under elastic sealing element's elastic action to reach whole improvement electroacoustic component to leading the sealing performance between the sound hole, improve electroacoustic component's audio performance.

Description

Waterproof sealing assembly and electronic equipment

Technical Field

The application relates to the field of communication equipment, especially relates to a waterproof sealing assembly and electronic equipment.

Background

At present, the intelligent watch is often required to be provided with a waterproof breathable film between a sound pickup hole and a microphone, so that water and the microphone are isolated by utilizing the waterproof breathable film, and the safety of the microphone is ensured. However, the waterproof breathable film is small in thickness, and after the waterproof breathable film is mounted on a watch shell, deformation is easily caused, so that the waterproof performance is reduced, and the sound receiving performance of the microphone is reduced.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a waterproof sealing assembly, wherein, waterproof sealing assembly includes:

the sound guide device comprises a shell, a sound guide hole and a sound guide hole, wherein the shell is provided with an outer surface, an inner surface opposite to the outer surface and the sound guide hole penetrating through the outer surface and the inner surface;

the breathable film support is connected to the inner surface of the shell in a sealing mode, a groove is formed in one side, close to the shell, of the breathable film support, a through hole communicated with the groove is formed in one side, away from the shell, of the breathable film support, and the groove is communicated with the sound guide hole;

the waterproof breathable membrane assembly is fixed in the groove and covers the opening of the through hole communicated with the groove, and the thickness of the waterproof breathable membrane assembly is smaller than or equal to the depth of the groove;

the electroacoustic component is fixed on one side, close to the inner surface, of the shell, a preset distance is arranged between the electroacoustic component and the breathable film support, and the electroacoustic component is provided with a sound channel opposite to the through hole;

the elastic sealing piece is sealed between the electroacoustic component and the breathable film support and elastically compressed in the preset interval, so that the elastic compression amount of the elastic sealing piece is controlled at a preset deformation amount, and the elastic sealing piece is provided with a communication hole for communicating the through hole and the sound channel.

The embodiment of the application also provides electronic equipment, wherein the electronic equipment comprises the waterproof sealing assembly.

The waterproof sealing assembly and the electronic device provided by the embodiment of the application are connected to the inner surface in a sealing manner through the breathable film support, the breathable film support is provided with a groove communicated with the sound guide hole, the waterproof breathable film assembly is fixed in the groove, so that the waterproof breathable film assembly is prevented from deforming, the waterproof breathable film assembly can isolate water entering the sound guide hole outside the through hole, the elastic sealing element is extruded between the breathable film support and the electroacoustic assembly, the compression amount of the elastic sealing element is controlled, the elastic sealing element is not influenced by deformation of the waterproof breathable film assembly, a gap between the electroacoustic assembly and the breathable film support is effectively sealed, the breathable film support is sealed and stable with the shell under the elastic action force of the elastic sealing element, and the sealing performance of the electroacoustic assembly to the sound guide hole is integrally improved, therefore, the sound conduction effect between the electroacoustic component and the sound picking hole is ensured, and the audio performance of the electroacoustic component is improved.

Drawings

In order to more clearly illustrate the technical solution of the application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view, partially in cross-section, of a waterproof seal assembly of one manner provided by an embodiment of the present application;

FIG. 2 is a schematic view, partially in cross-section, of another version of a watertight seal assembly provided by an embodiment of the present application;

FIG. 3 is a schematic partial cross-sectional view of another version of a watertight seal assembly according to an embodiment of the present application;

FIG. 4 is a schematic partial cross-sectional view of another version of a watertight seal assembly provided by an embodiment of the present application;

FIG. 5 is a partially exploded schematic view of the watertight seal assembly provided by the embodiment of FIG. 4;

FIG. 6 is a schematic view, partially in cross-section, of a watertight seal assembly according to another embodiment of the present application;

FIG. 7 is a partially exploded schematic view of the watertight seal assembly provided by the embodiment of FIG. 6;

FIG. 8 is a schematic view, partially in cross-section, of a watertight seal assembly according to another embodiment of the present application;

FIG. 9 is a schematic view in partial cross-section of a watertight seal assembly provided by an embodiment of the present application;

FIG. 10 is an enlarged partial schematic view of portion III of the watertight seal assembly of FIG. 9;

FIG. 11 is a schematic view, partially in cross-section, of a watertight seal assembly according to another embodiment of the present application;

fig. 12 is an exploded schematic view of an electronic device provided in an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments.

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. The embodiments listed in the present application may be appropriately combined with each other.

The terms "first," "second," and the like in the description and claims of the present application and in the above-described drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.

It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments. For the sake of brevity, only some numerical ranges are explicitly disclosed herein. However, any lower limit may be combined with any upper limit to form ranges not explicitly recited; and any lower limit may be combined with any other lower limit to form a range not explicitly recited, and similarly any upper limit may be combined with any other upper limit to form a range not explicitly recited. Also, although not explicitly recited, each point or individual value between endpoints of a range is encompassed within the range. Thus, each point or individual value can form a range not explicitly recited as its own lower or upper limit in combination with any other point or individual value or in combination with other lower or upper limits. In the description herein, it is to be noted that, unless otherwise specified, "above" and "below" are inclusive of the present number, and "a plurality" of "one or more" means two or more. The above summary of the present invention is not intended to describe each disclosed embodiment or every implementation of the present invention. The following description more particularly exemplifies illustrative embodiments. At various points throughout this application, guidance is provided through a list of embodiments that can be used in various combinations. In each instance, the list is merely a representative group and should not be construed as exhaustive.

Referring to fig. 1, the present application provides a waterproof seal assembly 100, the waterproof seal assembly 100 comprising:

a housing 10 having an outer surface 11, an inner surface 12 opposite to the outer surface 11, and a sound guide hole 13 penetrating the outer surface 11 and the inner surface 12;

a breathable film bracket 20 hermetically connected to the inner surface 12 of the housing 10, wherein a groove 21 is formed on one side adjacent to the housing 10, and a through hole 22 communicated with the groove 21 is formed on one side away from the housing 10, and the groove 21 is communicated with the sound guide hole 13;

the waterproof breathable film assembly 30 is fixed in the groove 21 and covers the through hole 22, and the thickness of the waterproof breathable film assembly 30 is smaller than or equal to the depth of the groove 21;

an electroacoustic assembly 40 fixed on one side of the shell 10 facing the inner surface 12 and having a preset distance with the breathable film support 20, wherein the electroacoustic assembly 40 is provided with a sound channel 41 opposite to the through hole 22;

and the elastic sealing element 50 is sealed between the electroacoustic component 40 and the breathable film bracket 20 and elastically compressed in the preset interval, so that the elastic compression amount of the elastic sealing element 50 is controlled to be a preset deformation amount, and the elastic sealing element 50 is provided with a communication hole 53 for communicating the through hole 22 and the sound channel 41.

It can be understood that the electroacoustic component 40 can form a sealed channel by using the sound channel 41, the communication hole 53, the through hole 22, the groove 21 and the sound guide hole 13, and the waterproof breathable film component 30 is isolated in the sealed channel, so as to achieve waterproof isolation of the electroacoustic component 40 and ensure effective sound transmission to the outside of the electroacoustic component 40. The waterproof sealing assembly 100 can be applied to an electronic device, such as a mobile phone, a smart watch, an interphone, a notebook computer, or a tablet computer.

The breathable film support 20 is hermetically connected to the inner surface 12, the breathable film support 20 is provided with a groove 21 communicated with the sound guide hole 13, the waterproof breathable film assembly 30 is fixed in the groove 21, so that the waterproof breathable film assembly 30 is prevented from deforming, the waterproof breathable film assembly 30 can isolate the entering water outside the through hole 22, the elastic sealing element 50 is squeezed between the breathable film support 20 and the electroacoustic assembly 40, the compression amount of the elastic sealing element 50 is controlled and cannot be influenced by the deformation of the waterproof breathable film assembly 30, the gap between the electroacoustic assembly 40 and the breathable film support 20 is effectively sealed, the breathable film support 20 is further sealed and stabilized with the shell 10 under the elastic acting force of the elastic sealing element 50, and the sealing performance between the electroacoustic assembly 40 and the sound guide hole 13 is integrally improved, thereby ensuring the sound conduction effect between the electroacoustic component 40 and the sound guide hole 13 and improving the audio performance of the electroacoustic component 40.

In this embodiment, the housing 10 serves as a protection structure of the waterproof seal assembly 100. The housing 10 may shield the electro-acoustic assembly 40 and block most of the water stain from flowing to the electro-acoustic assembly 40. The outer surface 11 is an appearance surface of the housing 10, and the inner surface 12 may be a curved surface, a flat surface, and a bent surface. The sound guide hole 13 is internally responsible for airflow so as to realize sound conduction.

Optionally, the sound guide hole 13 is a special-shaped hole. The sound guide hole 13 is formed by a first hole 131 adjacent to the outer surface 11 and a second hole 132 adjacent to the inner surface 12. The first hole 131 extends substantially perpendicularly to the outer surface 11, and the second hole 132 has a tapered hole shape. The aperture of the second hole 132 far from the first hole 131 is larger than that of the first hole 131, so that the second hole 132 is in butt joint with the groove 21, thereby facilitating air flow and ensuring sound transmission efficiency.

In this embodiment, the breathable film support 20 is a hard member, and the breathable film support 20 has a better supporting performance so as to resist pressure of the waterproof breathable film. The vented membrane support 20 has a first surface 23 adjacent to the inner surface 12 and a second surface 24 opposite the first surface 23. The groove 21 extends from the first surface 23 to the second surface 24 in a concave manner. The through hole 22 extends from the bottom surface of the groove 21 to the second surface 24. The inner diameter of the second surface 24 fixedly connected to the through hole 22 is smaller than the inner diameter of the groove 21, so that the groove 21 can receive the breathable film assembly, and the breathable film assembly can cover the through hole 22.

Optionally, the first surface 23 is a plane, and the position of the inner surface 12, which is attached to the first surface 23, is a plane structure, so as to increase the sealing performance between the vented membrane holder 20 and the housing 10.

Optionally, the second surface 24 is planar, and the second surface 24 is parallel to the first surface 23, so as to control the compression amount of the elastic sealing element 50, and ensure that the elastic sealing element 50 is compressed in the direction perpendicular to the second surface 24.

The depth of the groove 21 is the distance from the first surface 23 to the bottom surface of the groove 21. Because the first surface 23 substantially fits the inner surface 12 of the housing 10, when the depth of the groove 21 is greater than or equal to the thickness of the waterproof breathable film assembly 30, the waterproof breathable film assembly 30 is fixed at the bottom of the groove 21, and the waterproof breathable film assembly 30 is spaced from or just contacts the inner surface 12 of the housing 10, so that the waterproof breathable film assembly 30 is not subject to the extrusion force of the housing 10, and the deformation of the waterproof breathable film assembly 30 is avoided, thereby ensuring the flatness of the waterproof breathable film assembly 30, further effectively sealing the through hole 22 to isolate water from the through hole 22, and keeping the ventilation amount of the waterproof breathable film assembly 30 unchanged, thereby ensuring the safety and the effective audio performance of the electroacoustic assembly 40.

Utilize the internal diameter of through-hole 22 is less than the internal diameter of recess 21, so that waterproof ventilated membrane subassembly 30 is fixed in behind the recess 21 bottom, waterproof ventilated membrane subassembly 30 partly shelters from the opening of through-hole 22, another portion laminate in the bottom surface of recess 21, thereby guarantee the steadiness and the planarization of waterproof ventilated membrane subassembly 30.

In this embodiment, the waterproof breathable membrane assembly 30 is formed from a plurality of laminated film sheets. The thickness of the waterproof breathable film assembly 30 is small, so that the ventilation amount of the waterproof breathable film assembly 30 is ensured, and the increase of the sound conduction resistance of the waterproof breathable film assembly 30 is avoided. The waterproof breathable film assembly 30 has a first film surface 31 attached to the bottom surface of the groove 21 and a second film surface 32 disposed opposite to the first film surface 31. The first film surface 31 is the surface of the waterproof breathable film assembly 30 closest to the bottom surface of the groove 21, and the second film surface 32 is the surface of the waterproof breathable film assembly 30 closest to the opening of the groove 21. The distance from the first film side 31 to the second film side 32 is equal to the thickness of the waterproof breathable film assembly 30. The distance from the first film surface 31 to the second film surface 32 is less than or equal to the depth of the groove 21, that is, the distance from the first film surface 31 to the second film surface 32 is less than the distance from the bottom surface of the groove 21 to the inner surface 12 of the housing 10, so that the second film surface 32 has a distance from or just contacts the inner surface 12 of the housing 10.

In this embodiment, the elastic sealing member 50 is sealed between the breathable film support 20 and the electroacoustic component 40 to ensure the sealing performance between the breathable film support 20 and the electroacoustic component 40, and the breathable film support 20 and the electroacoustic component 40 are both elastically supported to prevent the airflow from leaking between the breathable film support 20 and the electroacoustic component 40 and affecting the sound transmission. The resilient seal 50 has a first connection face 51 and a second connection face 52 opposite to the first connection face 51. The first connecting surface 51 is in sealing engagement with the second surface 24 to ensure the sealing property of the elastic sealing member 50 and the vented membrane holder 20. The second connection surface 52 is parallel to the first connection surface 51, thereby facilitating control of the amount of resilient compression of the resilient seal 50. When the elastic sealing element 50 is pressed, the second connecting surface 52 is close to the first connecting surface 51 along the normal direction thereof, so that the elastic sealing element 50 is deformed uniformly, a transverse shear force in the direction parallel to the second surface 24 after the elastic sealing element 50 is compressed is avoided, and the elastic sealing element 50 is prevented from being displaced in the direction parallel to the second surface 24.

In the present embodiment, the inner diameter of the communication hole 53 is much larger than that of the through hole 22, so that the air flow between the through hole 22 and the communication hole 53 is ensured, thereby ensuring the sound transmission efficiency. Because the elastic sealing element 50 is made of a stretchable material, when the elastic sealing element 50 is in a compression deformation state, the inner peripheral side wall of the communication hole 53 deforms, and the inner diameter of the deformed communication hole 53 is still larger than that of the through hole 22, so that sound transmission between the communication hole 53 and the through hole 22 is effectively ensured.

In this embodiment, the electroacoustic assembly 40 is fixed inside the housing 10, and the distance from the electroacoustic assembly 40 to the housing 10 is kept stable, and further the distance from the electroacoustic assembly 40 to the second surface 24 is kept stable. Elastic sealing element 50 elastic compression in electroacoustic subassembly 40 with between the second surface 24, thereby elastic sealing element 50's compressive capacity remain stable and control is in presetting the deformation volume, so that elastic sealing element 50 can be effectively right breathable film support 20 applys elastic force, again can be right electroacoustic subassembly 40 applys elastic force for casing 10, breathable film support 20, elastic sealing element 50 and electroacoustic subassembly 40 are sealing connection in proper order, with reinforcing whole sealing performance, and waterproof breathable film subassembly 30 can not receive the sealing stress influence and produce the deformation.

One surface of the electroacoustic component 40, which abuts against the second connecting surface 52, is a plane, so that the electroacoustic component 40 is ensured to be effectively attached to the elastic sealing element 50 in a sealing manner, a gap is prevented from being formed between the elastic sealing element 50 and the electroacoustic component 40, and sound is prevented from leaking between the electroacoustic component 40 and the elastic sealing element 50.

In this embodiment, the electroacoustic component 40 may be a microphone component, and the electroacoustic component 40 may receive sound outside the casing 10 by using the sound guide hole 13, the through hole 22, the communication hole 53, and the sound channel 41. The electroacoustic component 40 may be a speaker component, and the electroacoustic component 40 may emit sound to the outside of the housing 10 by using the sound channel 41, the communication hole 53, the through hole 22, and the sound guide hole 13. In this embodiment, the electroacoustic component 40 is taken as a microphone component for example, the sound guiding hole 13 is a sound collecting hole of the housing 10, so that the sound guiding hole 13 transmits sound into the housing 10, the sound entering the sound guiding hole 13 passes through the waterproof breathable film component 30, enters the through hole 22, and is transmitted to the electroacoustic component 40 through the communication hole 53 and the sound channel 41, and the electroacoustic component 40 can convert a sound signal into an electrical signal, so as to obtain audio information.

It can be understood that, the waterproof sealing structure between the common microphone and the casing 10 adopts the waterproof breathable film and the foam to be superposed for sealing and waterproofing, and the waterproof breathable film can tightly abut against the sound pickup hole of the casing 10 by utilizing the elastic telescopic performance of the foam, and the foam can tightly abut against the microphone, so that the waterproof breathable film is waterproof to block the sound pickup hole. However, under this kind of condition, because the bubble is cotton has elastic stretching performance, waterproof ventilated membrane thickness is thinner, and waterproof ventilated membrane very easily supports under holding at the cotton elasticity of bubble and produces deformation promptly, leads to waterproof ventilated membrane and picks up the sealed not good of sound hole, and waterproof ventilated membrane produces under the condition of deformation easily, can lead to the cotton elastic stretching volume of bubble unstably again for the bubble is cotton to have deformation equilibrium, leads to the sealed not good of bubble cotton and microphone. The waterproof sealing assembly 100 provided by the embodiment of the application adopts the breathable film support 20 to stabilize the waterproof breathable film assembly 30, so that the waterproof breathable film assembly 30 is isolated from the shell 10 and the elastic sealing element 50, the waterproof breathable film assembly 30 is prevented from receiving elastic supporting force, and the waterproof breathable film assembly 30 is still positioned on a waterproof sealing channel to isolate water from the electroacoustic assembly 40. The elastic sealing element 50 is connected to the breathable film support 20 in a sealing manner, and is kept in a stable compression amount under the extrusion of the electroacoustic assembly 40, so that the compression deformation amount of the elastic sealing element 50 is controlled, the breathable film support 20 tightly abuts against the shell 10 under the elastic acting force of the elastic sealing element 50 and is kept in a stable sealing state with the shell 10, and the elastic sealing element 50 and the electroacoustic assembly 40 are also kept in a stable sealing state, so that the shell 10, the breathable film support 20, the elastic sealing element 50 and the electroacoustic assembly 40 integrally form a sealing structure, sound leakage is effectively prevented, external water source invasion to the electroacoustic assembly 40 is effectively isolated, and the audio performance of the electroacoustic assembly 40 is improved.

It is understood that the amount of compression deformation of the elastic sealing member 50 is controlled within the predetermined deformation amount, so that the elastic force of the elastic sealing member 50 on the vented membrane holder 20 and the elastic force on the electroacoustic assembly 40 are not too large and not too small. If the elastic compression amount of the elastic sealing element 50 is too large, firstly, the elastic sealing element 50 is easily caused to deform too much, the communication hole 53 is caused to become small, the communication hole 53 is blocked to transmit sound, and the sound transmission efficiency is reduced, secondly, the breathable film support 20 is easily stressed unevenly, and the electroacoustic component 40 is easily stressed unevenly, the breathable film support 20 is caused to tilt relative to the shell 10, and the electroacoustic component 40 is caused to tilt relative to the elastic sealing element 50, so that gaps are generated between the breathable film support 20 and the shell 10 and between the electroacoustic component 40 and the elastic sealing element 50, sound leakage occurs, and the audio performance is reduced. If the elastic compression amount of the elastic sealing member 50 is too small, it is easy to cause insufficient tightness between the electroacoustic assembly 40 and the elastic sealing member 50, and insufficient tightness between the breathable film holder 20 and the housing 10, so that air flows leak between the electroacoustic assembly 40 and the elastic sealing member 50, and between the breathable film holder 20 and the housing 10, and the sound transmission efficiency is reduced.

Further, referring to fig. 2, the waterproof breathable film assembly 30 includes a breathable film 33 and a reinforcing layer 34 laminated on the breathable film 33, the breathable film 33 is close to the bottom surface of the groove 21, the reinforcing layer 34 is provided with a first vent hole 341, the first vent hole 341 transmits the air flow to the through hole 53 through the breathable film 33, or the through hole 53 transmits the air flow to the first vent hole 341 through the breathable film 33.

In this embodiment, the breathable membrane 33 prevents water from passing through, but allows airflow to pass through, thereby ensuring efficient conduction of sound through the breathable membrane 33. The thickness of the breathable film 33 is 0.01 mm-0.05 mm. The breathable film 33 is very sensitive to deformation influence, and the fine deformation will cause the breathable amount of the breathable film 33 to be influenced, so that the breathable film 33 needs the reinforcing layer 34 for reinforcement, and the form is always kept stable. In order to prevent the reinforcing layer 34 from obstructing the airflow, the reinforcing layer 34 is provided with the first air hole 341, so that the airflow can pass through the air permeable membrane 33 after passing through the first air hole 341. After the waterproof breathable membrane 33 assembly 30 is fixed in the groove 21, the air flow entering the sound guide hole 13 passes through the first air vent 341, then passes through the breathable membrane 33, and finally is conducted to the through hole 22, and the breathable membrane 33 can prevent water from passing through, so that water is isolated outside the through hole 22 to meet the requirement of waterproof and breathable, and sound enters the through hole 22 after passing through the waterproof breathable membrane assembly 30 from the sound guide hole 13. Of course, it is also possible that the air flow of the through hole 22 passes through the air permeable membrane 33 and then is transferred to the first air permeable hole 341.

Optionally, the reinforcing layer 34 is a steel sheet or a resin plastic sheet. The thickness of reinforcing layer 34 is greater than the thickness of ventilated membrane 33 to the realization is right ventilated membrane 33 effective reinforcement prevents ventilated membrane 33 deformation.

It is understood that the reinforcing layer 34 reinforces the breathable film 33, and in order to prevent the waterproof breathable film assembly 30 from being deformed by the extrusion force during the installation process, the permeability is reduced, that is, in order to facilitate the installation of the waterproof breathable film assembly 30, the reinforcing layer 34 is used to reinforce the breathable film 33. On waterproof ventilated membrane 33 was applied to electroacoustic component 40's seal structure, still need utilize ventilated membrane support 20 is right waterproof ventilated membrane assembly 30 supports, through waterproof ventilated membrane assembly 30 is fixed in recess 21 bottom prevents waterproof ventilated membrane assembly 30 receives casing 10 extrusion deformation to guarantee waterproof sealing assembly 100's effective waterproof performance.

In other embodiments, the waterproof breathable film assembly 30 may also include two layers of the reinforcing layer 34, and the two layers of the reinforcing layer 34 clamp the breathable film 33 together. The waterproof breathable film assembly 30 may also be provided with two breathable films 33, and the two breathable films 33 are respectively laminated on two sides of the reinforcing layer 34.

Further, the waterproof breathable film assembly 30 further includes a first adhesive layer 35 and a second adhesive layer 36, the first adhesive layer 35 is adhered to the breathable film 33 and the bottom surface of the groove 21, the second adhesive layer 36 is adhered to the breathable film 33 and the reinforcing layer 34, the first adhesive layer 35 and the second adhesive layer 36 are respectively provided with a second vent hole 351 and a third vent hole 361, the second vent hole 351 is communicated with the through hole 22, and the third vent hole 361 is communicated with the first vent hole 341.

In this embodiment, the first adhesive layer 35 adheres the breathable film 33 to the bottom surface of the groove 21 in a sealing manner, so as to ensure that no gap is left between the waterproof breathable film assembly 30 and the bottom surface of the groove 21, and the breathable film 33 is firmly fixed in the groove 21. The first film surface 31 is formed on a surface of the first adhesive layer 35 facing away from the gas permeable film 33. The second adhesive layer 36 is to seal and adhere the reinforcing layer 34 to the breathable film 33, so that the reinforcing layer 34 and the breathable film 33 are structurally stable, and no gap is formed between the reinforcing layer 34 and the breathable film 33. The second film side 32 forms a side of the reinforcing layer 34 facing away from the second adhesive layer 36. In order to ensure that the waterproof breathable membrane assembly 30 can effectively transmit sound and prevent the waterproof breathable membrane assembly 30 from deforming, the aperture of the second vent 351 and the aperture of the third vent 361 are both substantially the same as the aperture of the first vent 341. The thickness of the reinforcing layer 34 is greater than the thickness of the first adhesive layer 35 and greater than the thickness of the second adhesive layer 36, so as to ensure the strength of the reinforcing layer 34.

Optionally, the first adhesive layer 35 is a waterproof double-sided adhesive layer, and the second adhesive layer 36 is a waterproof double-sided adhesive layer, so as to achieve the performance of effective waterproof and stable adhesion.

It is understood that the first adhesive layer 35 and the second adhesive layer 36 are provided in the waterproof breathable film assembly 30, so that the waterproof breathable film assembly 30 is thicker than the single layer of the breathable film 33, and the thickness of the waterproof breathable film assembly 30 is approximately 0.1mm to 0.8mm, for example, the thickness of the waterproof breathable film assembly 30 is 0.5 mm. Waterproof ventilated membrane subassembly 30 itself has certain compressibility, works as waterproof ventilated membrane subassembly 30 directly with after the coincide of elastic sealing element 50, the compressive strain stack between them causes deformation uncontrollable more easily to lead to sealing performance not good, and unfavorable ventilative transaudient, reduce electroacoustic subassembly 40's audio performance. The application of waterproof sealing assembly 100 is wholly fixed in waterproof ventilated membrane subassembly 30 ventilated membrane support 20 to avoid waterproof ventilated membrane subassembly 30 with the compressive capacity of elastic sealing element 50 superposes, and effective control sealing performance is guaranteed to elastic sealing element 50's elastic compressive capacity.

Further, the orthographic projection of the opening of the first hole 131 on the reinforcing layer 34 is staggered with the first vent hole 341, and the orthographic projection area of the opening of the second hole 132 far away from the first hole 131 on the reinforcing layer 34 covers the first vent hole 341.

In this embodiment, the first hole 131 extends in a direction perpendicular to the outer surface 11. The second hole 132 is a tapered hole. The second bore 132 extends transversely with respect to the first bore 131 parallel to the inner surface 12 such that the second bore 132 has a space laterally offset with respect to the first bore 131. The first vent hole 341 is opposite to the staggered portion of the second hole 132 relative to the first hole 131, that is, the first vent hole 341 is staggered from the first hole 131. The first hole 131 is formed in the orthographic projection of the opening of the outer surface 11 on the reinforcing layer 34 and the first vent 341 are staggered, so that an external object is blocked by the reinforcing layer 34 after entering the first hole 131, the breathable film 33 cannot be directly punctured, and the safety of the breathable film 33 is ensured. The second hole 132 is bent and extended relative to the first hole 131, so that the airflow efficiency between the first vent 341 and the sound guide hole 13 can be increased, and the sound transmission is facilitated.

Further, referring to fig. 3, the waterproof sealing assembly 100 further includes a waterproof adhesive layer 60, the waterproof adhesive layer 60 is adhered between the breathable film support 20 and the casing 10, and the waterproof adhesive layer 60 is provided with a through hole 61 communicating with the groove 21 and the sound guide hole 13.

In this embodiment, the waterproof adhesive layer 60 seals the breathable film holder 20 and the case 10 so that no gap is formed between the breathable film holder 20 and the case 10. The two opposite surfaces of the waterproof adhesive layer 60 are tightly attached to the housing 10 and the breathable film support 20, respectively. The waterproof adhesive layer 60 is a waterproof double-sided adhesive layer. The aperture of the through hole 61 is larger than the aperture of the opening of the groove 21 on the first surface 23, so as to prevent the waterproof adhesive layer 60 from blocking the opening of the groove 21. The sound guiding hole 13 is identical to the groove 21 through the through hole 61, so that the sound guiding hole 13 is communicated with the first air hole 341 through the through hole 61, so that sound is transmitted to the through hole 22 through the sound guiding hole 13, the through hole 61 and the first air hole 341 in sequence, and the electroacoustic component 40 receives sound. The thickness of the waterproof adhesive layer 60 is small, so that the waterproof adhesive layer 60 has a small elastic compression amount, and the breathable film support 20 is abutted against the waterproof adhesive layer 60 under the elastic action of the elastic sealing element 50, and the elastic compression amount of the waterproof adhesive layer 60 is almost negligible, so that the breathable film support 20 is abutted against the shell 10 under the elastic action of the elastic sealing element 50, and the breathable film support 20 and the shell 10 are kept stable. Of course, in other embodiments, the breathable membrane support 20 may be welded to the case 10 after the waterproof breathable membrane assembly 30 is mounted in the groove 21, so that the breathable membrane support 20 and the case 10 are absolutely stable.

Further, referring to fig. 4 and 5, a sinking groove 25 communicated with the groove 21 is further disposed at an opening end of the groove 21 on a surface of the breathable film support 20 adjacent to the housing 10, a depth of the sinking groove 25 is smaller than a depth of the groove 21, and a distance from a bottom surface of the sinking groove 25 to a bottom surface of the groove 21 is smaller than a thickness of the assembly of the breathable film 33.

In this embodiment, the first surface 23 extends the sink 25 toward the second surface 24. The sinking groove 25 is communicated with the groove 21 and is positioned at one side of the groove 21. The length and the width of the sinking groove 25 are both smaller than those of the groove 21, so that the cloth arrangement area of the sinking groove 25 is reduced, and the structural strength of the breathable film support 20 is ensured. The distance from the bottom surface of the sunken groove 25 to the bottom surface of the groove 21 is smaller than the thickness of the breathable film 33 assembly, so that the breathable film 33 assembly is partially higher than the bottom surface of the sunken groove 25. The peripheral side wall of the breathable film 33 assembly is in clearance fit with the inner peripheral side wall of the groove 21, and the clearance is small. In order to take out the breathable film 33 assembly from the groove 21, a clamp is plugged into the sinking groove 25, so that the clamp can be conveniently used for contacting the edge of the waterproof breathable film assembly 30 through the sinking groove 25, and then the waterproof breathable film assembly 30 is taken out.

In this embodiment, the through holes 61 are special holes in order to prevent the waterproof adhesive layer 60 from blocking the openings of the sink 25 and the grooves 21. The aperture of the through hole 61 is larger than the sum of the opening aperture of the sink groove 25 and the opening aperture of the groove 21. The through hole 61 is composed of a large hole and a small hole, the large hole corresponds to the opening of the groove 21, and the small hole corresponds to the opening of the sink groove 25, so that the waterproof adhesive layer 60 can firmly adhere the breathable film support 20 and the shell 10, and can ensure effective transmission of sound.

Further, the elastic sealing element 50 is made of foam, and the elastic sealing element 50 is bonded to the breathable film support 20 in a sealing manner.

In this embodiment, a double-sided adhesive layer 501 is disposed between the first connecting surface 51 and the second surface 24. The double-sided adhesive layer 501 is provided with adhesive layer holes 502 communicating with the communication holes 53 and the through holes 22, so that sound is conducted from the through holes 22 to the communication holes 53 through the adhesive layer holes 502. The double-sided adhesive layer 501 is used for sealing and bonding the elastic sealing element 50 and the breathable film support 20, so that the structural stability and the sealing performance of the elastic sealing element 50 and the breathable film support 20 are guaranteed. The elastic sealing member 50 covers the second surface 24 to ensure that the elastic deformation force of the elastic sealing member 50 can be transmitted to the breathable film support 20 in a balanced manner, so that the breathable film support 20 is supported against the shell 10 in a balanced manner, the breathable film support 20 is prevented from tilting relative to the shell 10, and the sealing property between the breathable film support 20 and the shell 10 is ensured. The thickness of the elastic sealing element 50 is far greater than that of the double-sided adhesive layer 501, so that the compression amount of the double-sided adhesive layer 501 can be ignored, and the compression deformation amount of the elastic sealing element 50 is controlled within a preset interval by controlling the distance from the electroacoustic assembly 40 to the breathable film support 20. The predetermined distance is equal to the thickness of the elastic sealing member 50 in the naturally stretched state minus the distance from the vented membrane support 20 to the electro-acoustic assembly 40. The first connecting surface 51 and the second connecting surface 52 are both planar, so that the elastic sealing element 50 is elastically deformed in a balanced manner.

In another embodiment, substantially the same as the embodiment shown in fig. 4 and 5, except that the elastic sealing member 50 is sealingly bonded to the electroacoustic assembly 40 and elastically abuts against the vented membrane support 20. Specifically, a double-sided adhesive layer 501 is disposed between the second surface 24 and the electroacoustic component 40, and the elastic sealing element 50 is fixed to the electroacoustic component 40 by the double-sided adhesive layer 501, so that the elastic sealing element 50 and the electroacoustic component 40 maintain a seal. After the electroacoustic component 40 is fixed inside the housing 10, the elastic sealing member 50 abuts against the breathable film support 20, so that the elastic sealing member 50 is pressed and deformed by the breathable film support 20 and the electroacoustic component 40.

In another embodiment, please refer to fig. 6 and 7, which is substantially the same as the embodiment shown in fig. 4 and 5, except that the elastic sealing member 50 is a sealing rubber ring, and the elastic sealing member 50 is integrally formed with the vented membrane support 20.

Specifically, the second surface 24 of the breathable film support 20 is provided with an annular groove around the through hole 22. The resilient seal 50 is partially embedded in the annular groove. The first connecting face 51 is formed at a portion where the elastic sealing member 50 is fitted into the annular groove. The elastic sealing member 50 and the breathable film support 20 are formed by injection molding through a two-color mold. The resilient seal 50 also has a raised portion that exposes the annular groove. The second connecting surface 52 is formed at the end of the protruding portion away from the vented membrane holder 20. The raised portions are annularly arranged around the periphery of the through hole 22. The end face of the protruding part far away from the breathable film support 20 can be abutted against the electroacoustic component 40 and deforms under the extrusion action of the electroacoustic component 40. The width of the protruding portion is smaller than the width of a portion embedded in the annular groove, so that the elastic sealing member 50 and the breathable film holder 20 are structurally stable, and the sealing performance of the electroacoustic assembly 40 is kept good. The space enclosed by the bosses forms the communication hole 53, so that the communication hole 53 communicates the sound passage 41 with the through hole 22, so that the through hole 22 transmits sound to the sound passage 41.

It can be understood that, because the elastic sealing element 50 is a sealing rubber ring, the elastic sealing element 50 has better sealing effect and better resilience performance compared with foam, so as to ensure better transmission of sound. Utilize elastic sealing member 50 with after ventilated membrane support 20 integrated into one piece, strengthen elastic sealing member 50 with the steadiness of ventilated membrane support 20 is convenient for install elastic sealing member 50 reaches ventilated membrane support 20.

In another embodiment, the elastic sealing member 50 is integrally formed with a portion of the electroacoustic component 40, and an end of the elastic sealing member 50 away from the electroacoustic component 40 elastically abuts against the vented membrane holder 20. For example, the electroacoustic assembly 40 includes a fixing bracket 42 fixedly connected to the housing 10 and an electroacoustic single body 43 fixed to the fixing bracket 42. The stabilizing brackets 42 are located on the inner surface 12 of the housing 10. The electroacoustic monomer 43 is fixed on the side of the stabilizing bracket 42, which faces away from the housing 10. The stabilizing support 42 is spaced from the breathable film support 20. One part of the elastic sealing element 50 is embedded in the fixing support 42, and the other part of the elastic sealing element is protruded from the fixing support 42 towards one surface of the breathable film support 20, and the height of the protruded part in a natural stretching state is larger than the distance from the fixing support 42 to the breathable film support 20, so that the elastic sealing element 50 elastically abuts against the breathable film support 20. The elastic seal 50 maintains a constant amount of compressive deformation under compression by the stabilizing support 42 and the vented membrane support 20. The elastic sealing member 50 is embedded in a portion of the stabilizing bracket 42 and is integrally formed with the stabilizing bracket 42.

In another embodiment, referring to fig. 8, the elastic sealing member 50 comprises a first elastic layer 54 sealingly connected to the vented membrane support 20 and a second elastic layer 55 sealingly connected to the electroacoustic assembly 40, wherein the first elastic layer 54 and the second elastic layer 55 are elastically pressed against each other.

Specifically, the first elastic layer 54 is bonded to the breathable membrane holder 20 through a first double-sided adhesive, and the second elastic layer 55 is bonded to the electroacoustic assembly 40 through a second double-sided adhesive. The first elastic layer 54 and the second elastic layer 55 may be made of two different elastic stretchable materials, or may be made of the same elastic stretchable material. After the electroacoustic component 40 is fixed to the housing 10, the first elastic layer 54 and the second elastic layer 55 are both pressed to generate elastic deformation, and one surface of the first elastic layer 54, which is far away from the breathable film support 20, abuts against one surface of the second elastic layer 55, which is far away from the electroacoustic component 40. Utilize first elastic layer 54 with second elastic layer 55 can extrude each other, make first elastic layer 54 with second elastic layer 55 stabilize respectively in ventilated membrane support 20 with electroacoustic subassembly 40, avoid elastic sealing element 50 whole with ventilated membrane support 20 produce the displacement or with electroacoustic subassembly 40 produces the displacement to guarantee sealing performance, and make things convenient for electroacoustic subassembly 40 with ventilated membrane support 20 separates, is convenient for electroacoustic subassembly 40 dismantles and maintains. Of course, in other embodiments, the first elastic layer 54 and the second elastic layer 55 may be integrally formed with the vented membrane support 20 and the electroacoustic assembly 40, respectively.

It is understood that the elastic seal 50 seals the gap between the electro-acoustic assembly 40 and the vented membrane support 20 and provides a controllable elastic force to the vented membrane support 20 and the electro-acoustic assembly 40 to ensure seal structure stability. The elastic sealing member 50 of the present application is not limited to the above-mentioned embodiments, and the elastic sealing member 50 may be formed by mixing a plurality of elastic stretchable materials, or may be formed by mixing a hard material with an elastic stretchable material.

Further, referring to fig. 9 and 10, the electroacoustic component 40 includes a fixing bracket 42, a reinforcing plate 44, a circuit board 45 and an electroacoustic single body 43, the fixing bracket 42 is fixed on the inner surface 12 of the housing 10, one surface of the circuit board 45 away from the reinforcing plate 44 abuts against one surface of the fixing bracket 42 facing the elastic sealing member 50, one surface of the reinforcing plate 44 away from the circuit board 45 abuts against the elastic sealing member 50, the electroacoustic single body 43 is electrically connected to the circuit board 45, and the sound channel 41 is disposed on the reinforcing plate 44, the circuit board 45 and the electroacoustic single body 43.

In this embodiment, a portion of the fixing support 42 is fixedly connected to the inner surface 12 of the housing 10, and another portion of the fixing support is opposite to the breathable film support 20. The circuit board 45 is fixed on a part of the stabilizing support 42 opposite to the breathable film support 20, and the circuit board 45 is positioned on one surface of the stabilizing support 42 facing the breathable film support 20. The circuit board 45 is responsible for transmitting electrical signals for the electro-acoustic cells 43. The reinforcing plate 44 reinforces the circuit board 45 to ensure the stability of the circuit board 45 and to allow the circuit board 45 to effectively support the electro-acoustic cell 43. The electroacoustic single body 43 may be fixed to one surface of the circuit board 45, which is attached to the fixing bracket 42, so that the reinforcing plate 44 is located on one surface of the circuit board 45, which is away from the electroacoustic single body 43, and the reinforcing plate 44 is conveniently abutted to the elastic sealing member 50 in a sealing manner. The reinforcing plate 44 is provided with a first sound hole 441, the circuit board 45 is provided with a second sound hole 451, the electroacoustic monomer 43 is provided with a third sound hole 431, and the first sound hole 441, the second sound hole 451 and the third sound hole 431 together constitute the sound channel 41. The first sound hole 441 communicates with the communication hole 53, thereby facilitating the communication hole 53 to transmit sound to the sound passage 41.

Optionally, the circuit board 45 is a flexible circuit board, so that the circuit board 45 is connected to a main board of the electronic device.

Alternatively, the circuit board 45 and the reinforcing plate 44 are fixed to the fixing bracket 42 by screws, that is, screws pass through the reinforcing plate 44 and the circuit board 45 and are screwed to the fixing bracket 42.

Optionally, the reinforcing plate 44 is a steel sheet, or a PET (Polyethylene terephthalate) sheet.

In this embodiment, the electroacoustic single body 43 is a microphone single body. The electroacoustic single body 43 takes sound through the sound guide hole 13, the through hole 22, the communication hole 53, the sound channel 41, and converts the sound into an electric signal. The electroacoustic monomer 43 is electrically connected to the circuit board 45 to transmit an electrical signal to the main board via the circuit board 45. The electroacoustic cell 43 has a housing and a piezoelectric sensor provided in the housing. The third sound hole 431 is opened in the housing of the electroacoustic single body 43 to transmit the vibrating airflow into the housing 10, so that the piezoelectric sensor senses the vibrating airflow, thereby sensing the sound pressure, and converts the sound into an electrical signal. Of course, in other embodiments, the electroacoustic single body 43 may also be a speaker single body.

In another embodiment, please refer to fig. 11, which is substantially the same as the embodiment shown in fig. 9 and 10, except that the fixing bracket 42 is fixed on the inner surface 12 of the housing 10 and is sealed and abutted against the elastic sealing member 50, the electroacoustic single body 43 is fixed on the fixing bracket 42 at a side away from the elastic sealing member 50, and the sound channel 41 is disposed on the fixing bracket 42 and the electroacoustic single body 43. One part of the fixing support 42 is fixed on the inner surface 12 of the housing 10, and the other part of the fixing support 42 is in sealing contact with the elastic sealing element 50, so that the fixing support 42 and the breathable film support 20 press the elastic sealing element 50. Reinforcing plate 44 and circuit board 45 coincide in proper order in firm support 42 deviates from elastic sealing element 50 one side, electroacoustic monomer 43 is fixed in circuit board 45 deviates from reinforcing plate 44 one side to can utilize firm support 42 supports circuit board 45, reinforcing plate 44 and electroacoustic monomer 43 can utilize again firm support 42 with sealed elastic component 50 is sealed contradicts, and the sealed power of holding that supports of increase. The stabilizing bracket 42 is provided with a bracket sound hole 421, the reinforcing plate 44 is provided with a first sound hole 441, the circuit board 45 is provided with a second sound hole 451, and the electroacoustic monomer 43 is provided with a third sound hole 431. The holder sound hole 421, the first sound hole 441, the second sound hole 451, and the third sound hole 431 together constitute the sound passage 41. The holder sound hole 421 communicates with the communication hole 53, thereby facilitating the communication hole 53 to transmit sound to the sound passage 41.

Further, with continuing reference to fig. 9 and 10, the fixing bracket 42 is provided with a through hole 422, the electroacoustic single body 43 passes through the through hole 422, and the circuit board 45 and the reinforcing plate 44 are sequentially fixed on one surface of the fixing bracket 42 facing the elastic sealing member 50 in an overlapping manner.

In this embodiment, the through hole 422 is formed in a portion of the fixing support 42 opposite to the breathable film support 20. The circuit board 45 covers the via hole 422 to ensure the stability of the circuit board 45 and the stabilizing bracket 42. The circuit board 45 with the staggered part of via hole 422 laminate in firm support 42 orientation ventilated membrane support 20 one side, stiffening plate 44 laminate in circuit board 45 deviates from firm support 42 one side. The electroacoustic monomer 43 passes through the via hole 422 and is attached to the surface of the circuit board 45 departing from the reinforcing plate 44. The electro-acoustic single body 43 penetrates through the through hole 422, so that the overlapping thickness of the electro-acoustic assembly 40 and the stabilizing bracket 42 is reduced, and the used space inside the shell 10 is saved.

Optionally, an inner peripheral side wall of the through hole 422 and an outer peripheral side wall of the electroacoustic single body 43 have a gap so as to pass the electroacoustic single body 43 through the through hole 422.

Optionally, the part of the stabilizing support 42 opposite to the breathable film support 20 is a plate.

Optionally, the stabilizing bracket 42 is a sheet metal piece.

Further, the inner surface 12 is recessed toward the outer surface 11 to form a cavity 121, the breathable film holder 20 is fixed to the bottom of the cavity 121, and the reinforcing plate 44 is fixed to the cavity 121, so that the elastic sealing element 50 is compressed in the cavity 121.

In the present embodiment, the inner peripheral side surface and the bottom surface of the cavity 121 constitute a part of the inner surface 12. The breathable film support 20 abuts against the bottom surface of the cavity 121, that is, the breathable film support 20 abuts against the inner surface 12 of the housing 10. The size of the cavity 121 is determined by the size of the vented membrane support 20 and by the size of the stiffening plate 44. The breathable film support 20 is accommodated in the cavity 121, so that the distance from the breathable film support 20 to the outer surface 11 is shortened, the depth of the sound guide hole 13 is reduced, and the sound is rapidly transmitted to the electroacoustic component 40. The second hole 132 of the sound guide hole 13 communicates with the cavity 121. The waterproof double-faced adhesive tape is attached to the bottom surface of the concave cavity 121, so that the breathable film support 20 is fixed in the concave cavity 121.

The reinforcing plate 44 is accommodated in the cavity 121 and is approximately positioned at the opening end of the cavity 121, so that a distance exists between the reinforcing plate 44 and the breathable film support 20. The outer circumferential side wall of the reinforcing plate 44 is spaced apart from the inner circumferential side wall of the cavity 121 so that the reinforcing plate 44 can penetrate into the cavity 121 to press the elastic sealing member 50. The elastic sealing element 50 is completely accommodated in the cavity 121, so that the elastic sealing element 50 is protected, and the usage space inside the housing 10 is prevented from being occupied by the elastic sealing element 50. A portion of the circuit board 45 connected to the reinforcing plate 44 may be received in the cavity 121 to protect the circuit board 45. The circuit board 45 extends out of the cavity 121 to be connected with a main board.

Specifically, the inner surface 12 is recessed toward the outer surface 11 to extend out of a counterbore 122, the bottom surface of the counterbore 122 is recessed toward the outer surface 11 to extend out of a positioning groove 123, the counterbore 122 and the positioning groove 123 together form the cavity 121, the inner peripheral side wall of the positioning groove 123 is in positioning fit with the outer peripheral side wall of the breathable film support 20, and a space exists between the outer peripheral side wall of the reinforcing plate 44 and the inner peripheral side wall of the counterbore 122.

The inner peripheral side surface and the bottom surface of the counterbore 122 are both part of the inner surface 12. The inner peripheral side surface and the bottom surface of the positioning groove 123 are also part of the inner surface 12. The size of the positioning groove 123 is just matched with the size of the breathable film support 20, so that the positioning groove 123 can conveniently position the breathable film support 20, the groove 21 can be effectively aligned with the sound guide hole 13, and the sound guide hole 13 can be conveniently aligned with the first vent 341. The inner peripheral wall of the counterbore 122 is spaced from the outer peripheral wall of the reinforcement plate 44 and is spaced from the outer peripheral wall of the elastomeric seal 50, thereby facilitating movement of the reinforcement plate 44 within the counterbore 122 and compressing the elastomeric seal 50 to deform.

More specifically, the fixing bracket 42 is further provided with a fixing leg 423 for stably supporting the inner surface 12 outside the open end of the counterbore 122, and a supporting platform 424 protruding from the fixing bracket 42 and at least partially received in the counterbore 122, and the circuit board 45 is fixed to the supporting platform 424. The stabilizing legs 423 and the support platform 424 are two substantially parallel portions of the stabilizing bracket 42, respectively. A bent connection 425 is provided between the stabilizing bracket 42 and the support platform 424. The stabilizing legs 423, the angled junctions 425, and the support platform 424 are integrally formed. The fixing legs 423 are attached to the inner surface 12 and located at a portion outside the cavity 121, and the bending connection portion 425 and the supporting platform 424 both extend into the cavity 121, so that the supporting platform 424 is close to the bottom surface of the cavity 121, thereby facilitating the pressing of the elastic sealing member 50 by the circuit board 45 and the reinforcing plate 44. The via 422 opens to the mount 424. The circuit board 45 is attached to the supporting platform 424 toward one side of the breathable film support 20.

Optionally, the fixing legs 423 are fixed to the housing 10 by screws, so that the fixing bracket 42 tightly abuts against the housing 10, so as to precisely control the distance from the supporting platform 424 to the bottom surface of the positioning groove 123, thereby facilitating control of the distance from the reinforcing plate 44 to the breathable film bracket 20, and further facilitating control of the compression amount of the elastic sealing element 50.

Further, the fixing bracket 42 is further provided with a key fixing table 426, the key fixing table 426 is located on one side of the electroacoustic single body 43, the key fixing table 426 is used for fixing a key switch, and the housing 10 is provided with a key hole 19 corresponding to the key fixing table 426.

In this embodiment, the key fixing table 426 and the supporting table 424 are spaced apart from each other, so that the stabilizing bracket 42 can support and stabilize the electroacoustic component 40 and the key switch, and the stabilizing bracket 42 can also compress the elastic sealing member 50 by an acting force. The key fixing table 426 protrudes away from the outer surface 11, so as to increase the distance from the key fixing table 426 to the outer surface 11, thereby increasing the installation space of the key switch and facilitating the pressing of the key switch. The key hole 19 penetrates the outer surface 11 and the inner surface 12. The key hole 19 can be pressed by a key so that the key switch can be pressed by the key.

Optionally, the fixing bracket 42 is provided with two key fixing platforms 426, and the supporting platform 424 is disposed between the two key fixing platforms 426, so that the sound guiding hole 13 is disposed between the two key holes 19, thereby optimizing the appearance structure arrangement of the housing 10.

Referring to fig. 12, an electronic device 200 is further provided in the embodiment of the present application, where the electronic device 200 includes the waterproof sealing assembly 100, and the electronic device 200 further includes a bottom cover 210 and a display screen assembly 220. The bottom cover 210 and the display screen assembly 220 are fixed to the housing 10. The housing 10 is a middle frame. The housing 10 has a top portion 18 formed between the outer surface 11 and the inner surface 12, and a bottom portion 17 opposite the top portion 18. The bottom cover 210 and the display screen assembly 220 are fixed to the bottom portion 17 and the top portion 18, respectively. A receiving cavity is formed among the bottom cover 210, the housing 10 and the display screen assembly 220, and the fixing bracket 42 is located in the receiving cavity. The electronic device 200 further includes a main board 230, the main board 230 is fixed between the bottom cover 210 and the display screen assembly 220, and the main board 230 is electrically connected to the electroacoustic assembly 40. The main board 230 receives the electric signal of the electroacoustic unit 43, so that the electronic device 200 can recognize the external sound and the electronic device 200 can communicate with the outside. The electronic device 200 is a smart watch. The housing 10, the bottom cover 210 and the display screen assembly 220 are all main body parts of the smart watch.

Optionally, the electronic device 200 further comprises a watch strap, which is connected to two opposite portions of the housing 10. The sound guide hole 13 and the key hole 19 are both opened between the two parts of the case 10 connected to the watch band, so that the sound guide hole 13 receives sound.

Of course, in other embodiments, the housing 10 may be a back cover, the electroacoustic single body 43 may be a speaker, and the sound guide hole 13 is a speaker hole. The breathable film support 20 is abutted against the housing 10, and the waterproof breathable film assembly 30 is opposite to the sound guide hole 13, so that the waterproof breathable film assembly 30 is utilized for waterproofing, and the sound of the electroacoustic monomer 43 is conveniently emitted from the sound guide hole 13 after passing through the waterproof breathable film assembly 30.

The foregoing is a preferred embodiment of the application, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the application principle, and these improvements and modifications are also considered as the protection scope of the application.

Claims

1. A watertight seal assembly, characterized in that it comprises:

the breathable film support is connected to the inner surface of the shell in a sealing mode, a groove is formed in one side, facing the shell, of the breathable film support, a through hole communicated with the groove is formed in one side, facing away from the shell, of the breathable film support, and the groove is communicated with the sound guide hole;

the waterproof breathable membrane assembly is fixed in the groove and covers the through hole, and the thickness of the waterproof breathable membrane assembly is smaller than or equal to the depth of the groove;

and the elastic sealing piece is sealed between the electroacoustic assembly and the breathable film bracket and elastically compressed in the preset interval, and is provided with a communication hole for communicating the through hole and the sound channel.

2. The waterproof sealing assembly of claim 1, wherein the waterproof vent membrane assembly comprises a vent membrane and a reinforcing layer laminated on the vent membrane, the vent membrane is close to the bottom surface of the groove, the reinforcing layer is provided with a first vent hole, and the first vent hole transmits air flow to the through hole through the vent membrane, or the through hole transmits air flow to the first vent hole through the vent membrane.

3. The waterproof sealing assembly of claim 2, wherein the waterproof breathable film assembly further comprises a first adhesive layer and a second adhesive layer, the first adhesive layer is adhered to the breathable film and the bottom surface of the groove, the second adhesive layer is adhered to the breathable film and the reinforcing layer, the first adhesive layer and the second adhesive layer are respectively provided with a second vent hole and a third vent hole, the second vent hole is communicated with the through hole, and the third vent hole is communicated with the first vent hole.

4. The waterproof sealing assembly according to claim 2, wherein the sound guide hole is formed by a first hole adjacent to the outer surface and a second hole adjacent to the inner surface, an opening diameter of the second hole far away from the first hole is larger than an opening diameter of the first hole at the outer surface, an orthographic projection of the opening of the first hole on the reinforcing layer is staggered from the first air vent, and an orthographic projection area of the opening of the second hole far away from the first hole on the reinforcing layer covers the first air vent.

5. The waterproof sealing assembly according to claim 1, wherein a sinking groove communicated with the groove is further formed in one surface of the breathable film support adjacent to the shell at the opening end of the groove, the depth of the sinking groove is smaller than that of the groove, and the distance from the bottom surface of the sinking groove to the bottom surface of the groove is smaller than the thickness of the breathable film assembly.

6. The waterproof sealing assembly according to claim 1, wherein the elastic sealing member is foam, and the elastic sealing member is sealingly bonded to the vented membrane holder and resiliently abuts against the electro-acoustic assembly, or sealingly bonded to the electro-acoustic assembly and resiliently abuts against the vented membrane holder.

7. The waterproof sealing assembly according to claim 1, wherein the elastic sealing member is a sealing rubber ring, and the elastic sealing member is integrally formed with the vented membrane holder and elastically abuts against the electro-acoustic assembly, or integrally formed with a portion of the electro-acoustic assembly and elastically abuts against the vented membrane holder.

8. The watertight sealing assembly of claim 1 wherein the resilient sealing member comprises a first resilient layer sealingly connected to the vented membrane support and a second resilient layer sealingly connected to the electro-acoustic assembly, the first resilient layer and the second resilient layer being resiliently compressed against each other.

9. The waterproof sealing assembly according to claim 1, wherein the electro-acoustic assembly comprises a stabilizing bracket and an electro-acoustic monomer, the stabilizing bracket is fixed on the inner surface of the housing, the electro-acoustic monomer is fixed on the stabilizing bracket, and the elastic sealing member is fixed between the electro-acoustic monomer and the breathable film bracket.

10. The watertight sealing assembly of claim 9 wherein the stabilizing bracket is provided with a through hole, the electro-acoustic cell being at least partially located within the through hole.

11. The watertight sealing assembly of claim 9 wherein the inner surface is recessed into the outer surface to form a cavity, the vented membrane holder being secured to a bottom of the cavity, the electro-acoustic transducer being at least partially secured within the cavity.

12. An electronic device comprising the waterproof sealing assembly according to any one of claims 1 to 11, wherein the housing is a middle frame, the housing further has a top portion formed between the outer surface and the inner surface, and a bottom portion opposite to the top portion, and the electronic device further comprises a bottom cover and a display screen assembly, the bottom cover and the display screen assembly being fixed to the bottom portion and the top portion, respectively.