Acoustic equipment

Abstract

The invention provides an acoustic apparatus. The acoustic equipment comprises a shell which comprises an outer wall, an inner wall and a sound through hole, and the sound through hole penetrates through the shell and is communicated with the inner space and the outer space of the shell; the waterproof assembly is arranged in the internal space and covers the sound through hole so as to prevent liquid from entering the internal space from the external space; the acoustic assembly comprises an acoustic sensor, the acoustic assembly is arranged on the side, away from the sound passing hole, of the waterproof assembly and is in sealed connection with the waterproof assembly, and a first gap is formed between the acoustic assembly and the shell; the pressure bearing device covers the acoustic component; and a sealing member which prevents the liquid from entering the internal space through the first gap, thereby improving the waterproof capability of the acoustic device.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic devices, and particularly to an acoustic device. Background Art

[0002] Sound holes are usually provided on the housing of an acoustic device for sound to pass from the external environment to the inside of the acoustic device or from the inside of the acoustic device to the external environment. When the acoustic device is used in the wild or a humid environment, water can easily enter the acoustic device through the sound holes on the housing. For example, in order for the microphone of a wireless earphone to pick up ambient sound and ensure call quality, sound holes must be left for air-conducted sound transmission. When the user is engaged in underwater activities (such as swimming) with the wireless earphone, water will enter the earphone through the sound holes. After the wireless earphone gets water in it, it may not only affect the normal use functions of its internal components, such as causing the microphone or speaker to fail, but may even cause a short circuit in the circuit of the main board or some components, resulting in the user being unable to use it normally.

[0003] Therefore, existing acoustic devices need to take certain measures to improve their waterproof protection performance, especially the waterproof protection of components such as microphones and speakers should be strengthened. Summary of the Invention

[0004] To solve the technical problem that existing acoustic devices do not have waterproof protection, the present invention provides an acoustic device, which includes a housing, a waterproof component, an acoustic component, a pressure-bearing device, and a seal. Among them, the housing includes an outer wall, an inner wall, and a sound hole. The sound hole penetrates through the housing and communicates the internal space of the housing with the external space. The waterproof component is placed in the internal space and covers the sound hole to prevent liquid from entering the internal space from the external space. The acoustic component includes an acoustic sensor. The acoustic component is disposed on a side of the waterproof component away from the sound hole and is hermetically connected to the waterproof component. The acoustic component and the housing form a first gap. The pressure-bearing device covers the acoustic component. And the seal seals the first gap to prevent the liquid from entering the internal space through the first gap.

[0005] According to some embodiments of the present application, when the pressure-bearing device is subjected to an external force in a first direction, the force is transmitted to a target position of the waterproof component, causing the waterproof component to abut against the inner wall. In a second direction perpendicular to the first direction, the outer edge dimension of the pressure-bearing device is larger than the outer edge dimension of the acoustic sensor.

[0006] According to some embodiments of the present application, the waterproof component includes a waterproof film; a first bonding portion located on one side of the waterproof film along the first direction; and a second bonding portion located on the other side of the waterproof film along the first direction, wherein the first bonding portion and the second bonding portion are both annular, and the target position includes the annular region.

[0007] According to some embodiments of the present application, the first bonding portion and the second bonding portion are in a compressed state in the first direction.

[0008] According to some embodiments of the present application, the housing includes a first accommodation cavity, the waterproof component is disposed in the first accommodation cavity, the acoustic component further includes a circuit board, and the acoustic sensor is mechanically connected to the circuit board; the circuit board is installed at the open end of the first accommodation cavity and forms the first gap with the open end.

[0009] According to some embodiments of the present application, the pressure-bearing device is installed at the open end of the first accommodation cavity and forms a second gap with the open end, and the sealant fills the second gap.

[0010] According to some embodiments of the present application, the pressure-bearing device includes a pressure-bearing housing and a second accommodation cavity, and the acoustic sensor is located in the second accommodation cavity.

[0011] According to some embodiments of the present application, along the first direction, the pressure-bearing housing includes a first end face and a second end face, the second end face abuts against the circuit board, and the first end face is away from the circuit board to bear the external force.

[0012] According to some embodiments of the present application, the circuit board includes at least one positioning hole; and at least one positioning protrusion is provided on the end face around the open end, corresponding to the at least one positioning hole one by one, and the at least one positioning protrusion passes through the at least one positioning hole.

[0013] According to some embodiments of the present application, at least one of the positioning protrusions includes an enlarged end portion, and the radial dimension of the end portion is greater than the aperture of the positioning hole, so as to fix the circuit board on the end face.

[0014] According to some embodiments of the present application, the central axis of the sound transmission hole forms an angle with the first direction that is not less than 30° and not greater than 60°; the sound transmission hole includes a first opening on the outer wall and a second opening on the inner wall, and the second opening is smaller than the first opening; and the average diameter of the sound transmission hole is 0.6-1.2 mm.

[0015] According to some embodiments of the present application, the seal is obtained by providing a fluid sealing material to the first gap and then curing it, and the fluid sealing material is sealant.

[0016] For the acoustic device of the present application, a waterproof component that conducts sound and is waterproof is covered on the second opening of the sound passage hole, which can prevent liquids such as water from entering the interior of the housing. By means of a pressure-bearing device, an external acting force is evenly applied to the target position of the waterproof component, which can prevent the waterproof component from wrinkling during the installation process. While achieving the waterproof performance, it avoids the adverse impact of the waterproof component on the acoustic performance, so that the acoustic device can be both waterproof and have good acoustic performance. Using a seal to seal the first gap between the acoustic component and the housing further enhances the waterproof performance.

[0017] Some other functions of the waterproof component provided by the present application will be partially listed in the following description. The creative aspects of the acoustic device provided by the present application can be fully explained through practice or by using the methods, devices, and combinations described in the detailed examples below. Brief Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0019] Figure 1 Shows a schematic diagram of an acoustic device provided according to some embodiments of the present application;

[0020] Figure 2 Shows Figure 1 A partial cross-sectional view of part A of the shown acoustic device;

[0021] Figure 3 Shows a schematic diagram of the structure of each part of an acoustic device provided according to some embodiments of the present application; and

[0022] Figure 4 Shows a schematic diagram of the structure of a pressure-bearing device provided according to some embodiments of the present application. Detailed Description of the Embodiments

[0023] The following description provides specific application scenarios and requirements of the present application, aiming to enable those skilled in the art to manufacture and use the content of the present application. For those skilled in the art, various local modifications to the disclosed embodiments are obvious, and the general principles defined here can be applied to other embodiments and applications without departing from the spirit and scope of the present application. Therefore, the present application is not limited to the illustrated embodiments, but has the broadest scope consistent with the claims.

[0024] The terms used herein are for the purpose of describing specific example embodiments only and are not restrictive. For example, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" used herein may also include the plural forms. When used in this application, the terms "comprising", "including" and / or "containing" mean that the associated integers, steps, operations, elements and / or components exist, but do not exclude the existence of one or more other features, integers, steps, operations, elements, components and / or groups, or the addition of other features, integers, steps, operations, elements, components and / or groups in the system / method.

[0025] In this application, the orientation or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "vertical", "horizontal", "lateral", "longitudinal", etc. are based on the orientation or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit that the indicated devices, elements or components must have a specific orientation, or be constructed and operated in a specific orientation.

[0026] Moreover, in addition to being able to represent orientation or positional relationships, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0027] In addition, the terms "mounted", "arranged", "provided with", "connected", "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral structure; it may be a mechanical connection or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium, or there may be internal communication between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0028] In this application, the meaning expressed by "X includes at least one of A, B, or C" is that X includes at least A, or X includes at least B, or X includes at least C. That is to say, X can include only any one of A, B, and C, or can include any combination of A, B, and C and other possible contents / elements at the same time. Any combination of A, B, and C can be A, B, C, AB, AC, BC, or ABC.

[0029] In this application, unless otherwise clearly stated, the association relationship generated between structures can be a direct association relationship or an indirect association relationship. For example, when describing "A is connected to B", unless it is clearly stated that A is directly connected to B, it should be understood that A can be directly connected to B or can be indirectly connected to B; for another example, when describing "A is above B", unless it is clearly stated that A is directly above B (A and B are adjacent and A is above B), it should be understood that A can be directly above B, or A can be indirectly above B (there are other elements between A and B and A is above B). And so on.

[0030] Considering the following description, these features of this application and other features, as well as the operation and function of the relevant components of the structure, and the economy of the combination and manufacture of the components can be significantly improved. Referring to the attached drawings, all of these form a part of this application. However, it should be clearly understood that the drawings are only for the purpose of illustration and description, and are not intended to limit the scope of this application. It should also be understood that the drawings are not drawn to scale.

[0031] The following is a detailed description of this application through specific embodiments:

[0032] Sound holes for sound to pass from the external environment to the inside of the acoustic device or from the inside of the acoustic device to the external environment are usually provided on the housing of the acoustic device. For example, in order to ensure the call quality, a wireless earphone with a call function will leave a sound hole for the microphone to pick up sound to receive the sound propagated through the air. In order to ensure that after the acoustic device is applied in the wild or a humid environment, to prevent liquids such as water from entering the acoustic device and ensure that the acoustic device can still work normally, it is necessary to perform a liquid-proof treatment on the sound holes of the acoustic device. This application provides an acoustic device that performs a liquid-proof treatment on the sound holes to enhance its waterproof ability. The liquids in this specification include but are not limited to liquids such as water, oil, and sweat. For the convenience of description, water is taken as an example below.

[0033] The acoustic device can be an electronic device with a sound-emitting function. The acoustic device can include electronic devices such as earphones, mobile phones, computers, and recorders. For the convenience of display, the following content takes the acoustic device as an earphone as an example for description. It should be noted that those skilled in the art should understand that other acoustic devices are also within the protection scope of this specification.

[0034] The earphone can be of any type. For example, the earphone can be a wired earphone or a wireless earphone. The earphone can be an air conduction earphone, a bone conduction earphone, or an earphone combining bone conduction and air conduction. In some embodiments, the earphone can also include a data storage unit. In this case, the earphone can play the audio data stored in the built-in data storage unit without relying on an external media player and without transmitting signals to the external media player. This specification does not limit the type of the earphone.

[0035] As an example, Figure 1 FIG. 6 shows a schematic diagram of an acoustic device 01 provided according to some embodiments of the present application. Figure 2 FIG. 8 shows Figure 1 A partial cross-sectional view of part A of the shown acoustic device 01. Figure 1 FIG. 12 shows a schematic structural diagram of the acoustic device 01 when it is a (wireless) earphone. The acoustic device 01 can include a housing 100, a waterproof component 200, an acoustic component 300, a pressure-bearing device 500, and a seal 400 ( Figure 1 and Figure 2 not shown in both).

[0036] The housing 100 can serve as an installation base for the acoustic device 01. Referring to Figure 2 , other components of the acoustic device 01 (such as the waterproof component 200, the acoustic component 300, the pressure-bearing device 500, etc.) can be installed with the housing 100 as a carrier. The housing 100 can have a thin-wall structure. The housing 100 can include an outer wall 101 and an inner wall 102. The outer wall 101 can be the appearance surface of the acoustic device 01 finally presented to the user. The outer wall 101 can be a smooth curved surface. The outer wall 101 and the inner wall 102 can be respectively provided with grooves or protrusions for easy assembly. In some embodiments, the housing 100 can include two parts. After assembling other components, the two parts are snapped together to form the functional components shown in part A of the acoustic device 01 as shown in Figure 1 . The shape of the housing 100 can be any shape, for example, it can be a runway shape (rounded rectangle) or a circular shape. When the acoustic device 01 is a wireless earphone, the housing 100 can be in a shape that conforms to the contour of the human ear, so that the wireless earphone can be worn more stably on the user's ear. The material of the housing 100 can be any material, such as metal material, plastic material, polymer material, etc. This application does not limit the shape and material of the housing 100.

[0037] In some embodiments, the housing 100 may include a first accommodation cavity 110, such that other components can be installed within the first accommodation cavity 110 to play a role in protecting and fixing other components. The first accommodation cavity 110 can accommodate part or all of the waterproof component 200, the acoustic component 300, and the pressure-bearing device 500. For example, the waterproof component 200 can be entirely disposed within the first accommodation cavity 110. In some embodiments, a groove may be formed on the inner wall 102 of the housing 200 to form the first accommodation cavity 110. In some embodiments, a wall plate may be provided on the inner wall 102 of the housing 200, and the wall plate and a part of the inner wall 102 of the housing enclose the first accommodation cavity 110.

[0038] As Figure 2 shown, the inner wall 102 of the housing 100 may include a bottom wall 103. As Figure 1 shown, the bottom wall 103 may be Figure 1 the inner wall surface of the bottom wall 103 shown within the dashed line frame of the acoustic device 01 as shown. Among them, the bottom wall may be a thin-wall plate-like structure. The bottom wall 103 can be planar or curved. When the bottom wall 103 is curved, the center of curvature of the bottom wall 103 can be set away from the first accommodation cavity 110 to provide a better experience for the user when worn. Further, a third accommodation cavity 110-1 is also provided on the bottom wall 103. The third accommodation cavity 110-1 can accommodate the components that need to be separately protected in the acoustic device 01. For example, the third accommodation cavity 110-1 can accommodate the acoustic component 300.

[0039] The inner wall 102 of the housing 100 may further include a side wall 104. As Figure 1 shown, the side wall 104 may be the inner wall surface corresponding to the side wall shown within the dashed line frame. Among them, the side wall 104 is located on the side of the housing 100 and may be a thin-wall plate-like structure. The side wall 104 can be planar or curved. When the side wall 104 is curved, the center of curvature of the side wall 104 can be set away from the first accommodation cavity 110 for positioning when the housing 100 is composed of two parts and needs to be installed. Further, a fourth accommodation cavity 110-2 is also provided on the side wall 104. The fourth accommodation cavity 110-2 can accommodate the components that need to be separately protected in the acoustic device 01. For example, the fourth accommodation cavity 110-2 can accommodate the acoustic component 300.

[0040] The housing 100 may include a sound hole 120. The sound hole 120 allows external sound waves to enter the housing 100 and be collected by the acoustic component 300, or the sound waves emitted by the acoustic component 300 can also be transmitted to the external environment through the sound hole 120. The sound hole 120 penetrates the housing 100 and communicates the internal space and the external space of the housing 100. As an example, Figure 3The figure shows a schematic diagram of a partial structure in a housing 100 of an acoustic device 01 provided according to some embodiments of the present application. By Figure 3 As can be seen, the sound passage hole 120 penetrates through the housing 100. The sound passage hole 120 may include a first opening 121 on the outer wall 101 and a second opening 122 on the inner wall 102 (here, the first opening 121 and the second opening 122 are taken as an example of being circular). In some embodiments, the aperture of the second opening 122 is smaller than the aperture of the first opening 121, where the aperture refers to the diameter of the opening on the wall surface. That is to say, the sound passage hole 120 can be in the shape of a horn with a large outer part and a small inner part. By designing the sound passage hole 120 in the shape of a horn, it is convenient for users to clean foreign matters such as solids or liquids entering the sound passage hole 120. On the other hand, it can make the die drawing smooth during the processing of the sound passage hole 120. The shape of the sound passage hole 120 can be any shape such as circular, oval, square, rectangular, etc., and the present application does not limit the shape of the sound passage hole 120 here. Among them, the sound passage hole 120 can be provided on the bottom wall 103 or on the side wall 104. For the convenience of display, the following description will be made taking the sound passage hole provided on the bottom wall 103 as an example.

[0041] In some embodiments, the central axis of the sound passage hole 120 is perpendicular to the inner wall 102 of the housing 100 where the sound passage hole is opened, that is, the central axis of the sound passage hole 120 is perpendicular to the bottom wall 103 of the housing 100 where the sound passage hole is opened. Since the side wall and / or the bottom wall 103 of the housing 100 may be a plane or a curved surface, the perpendicularity described in this specification refers to the tangential direction perpendicular to the wall surface of the inner wall 102 or the outer wall 101 at the position where the sound passage hole 120 is located. As Figure 3As shown, the sound hole 120 vertically penetrates the housing 100 downward perpendicular to the inner wall surface 102, that is, the sound hole 120 vertically penetrates the housing 100 downward perpendicular to the bottom wall 103. In some embodiments, the central axis of the sound hole 120 may not be perpendicular to the inner wall 102 of the housing where the sound hole 120 is formed. The value range of the inclination angle can be [30, 90). Among them, when the inclination angle is [60, 90), while ensuring a certain degree of inclination, the processing difficulty of the sound hole 133 is also reduced. When the inclination angle is [30, 60], ensuring that the inclination angle is within this range can further enhance the ability to obstruct water from entering the housing 10 through the sound hole 133. In some application scenarios, such as swimming, by obliquely arranging the sound hole 133, when the acoustic device 01 is subjected to dynamic water pressure, water flow will not directly rush into the sound hole 133, thereby improving the waterproof ability of the acoustic device 01 under dynamic water pressure. In some embodiments, the central axis of the sound hole 133 can be perpendicularly arranged relative to the accommodating bottom wall 132 to reduce the processing difficulty of the sound hole 133. The shape of the sound hole 133 can be any shape such as circular, oval, square, rectangular, etc., and this specification does not limit the shape of the sound hole 133 here.

[0042] As Figure 2 shown, the sound hole 120 can penetrate the housing 100 obliquely relative to the inner wall 102. Among them, the central axis of the sound hole 120 can be the connection line between the center of the second opening 122 of the sound hole 120 on the inner wall 102 of the housing 100 and the center of the first opening 121 on the outer wall 101 of the housing 100. It should be noted that the above perpendicularity can be basically perpendicular or generally perpendicular. That is, a certain error is allowed to exist. The size of the error is related to the precision of the sound hole 120 and the housing 100.

[0043] The acoustic component 300 can be arranged between the pressure-bearing device 500 and the waterproof component 200. One end of the acoustic component 300 is connected to the pressure-bearing device 500, and the other end is connected to the waterproof component 200. As an example, the acoustic component 300 can be hermetically connected to the waterproof component 200. For example, the connection gap between the acoustic component 300 and the waterproof component 200 can be filled with a seal 400 to achieve a sealing effect. In another case, the side wall connection gap between the acoustic component 300 and the waterproof component 200 can be filled with a seal 400 to achieve a sealing effect, and the bonding surface of the acoustic component 300 and the waterproof component 200 is adhesively bonded by the double-sided tape of the acoustic component and the colloid on the buffer layer of the waterproof component 200 to achieve sealing.

[0044] The acoustic component 300 is used to collect or emit sound, and the acoustic component 300 should be prevented from contacting water. As an example, the acoustic component 300 can be disposed on a side of the waterproof component 200 away from the sound passage hole 120. The waterproof component 200 can prevent water from entering the internal space of the housing, and thus, the acoustic component 200 can be prevented from contacting water.

[0045] Reference Figure 3 , the acoustic component 300 can be at least partially disposed in the first accommodating cavity 110. The acoustic component 300 and the housing 100 form a first gap T1, and the seal 400 can seal the first gap T1. The seal 400 filled in the first gap T1 can not only fix the acoustic component 300 in the first accommodating cavity 110, but also prevent liquid from entering the interior of the housing 100 through the first gap T1, further enhancing the waterproof effect. In some embodiments, the seal 400 can be obtained by providing a fluid sealing material to the first gap T1 and then curing it. It should be noted that Figure 3 is only a schematic diagram of the position of the cured sealing material. The fluid sealing material can completely fill all gaps through flow, so the components / structures connected by the seal 400 are in a sealed connection. Among them, the fluid sealing material can be a sealant. For example, the sealant can be an ultraviolet ray glue (Ultraviolet Rays glue, abbreviated as UV glue), silicone glue, hot melt glue, etc. Exemplarily, UV glue can be injected into the first gap T1, and after the UV glue is cured, the first gap T1 can be sealed to prevent liquid from entering the internal space through the first gap. The acoustic component 300 can include an acoustic sensor 310. The acoustic sensor 310 can receive or emit sound. As an example, the acoustic sensor 310 can include at least one of a pickup or a speaker.

[0046] In some embodiments, the number of acoustic sensors 310 in the acoustic component 300 can be one. In some embodiments, the number of acoustic sensors 310 in the acoustic component 300 can be multiple to achieve more functions. For example, when the acoustic sensor 310 is a microphone, setting two microphones in the earphone can achieve a noise reduction effect. One microphone can be a microphone used for ordinary user calls to collect human voices. The other microphone can have a noise collection function to facilitate collecting ambient noise. As an example, Figure 2 shows a schematic structural diagram of the acoustic component 300 including two acoustic sensors 310 according to an embodiment of the present application. Reference Figure 2, the acoustic sensor 310 may include a first acoustic sensor 310-1 and a second acoustic sensor 310-2. The first acoustic sensor 310-1 and the second acoustic sensor 310-2 may be connected using a circuit board 320, that is, the circuit board 320 as a whole is connected to the two acoustic sensors 310 at the same time. In some embodiments, the first acoustic sensor 310-1 and the second acoustic sensor 310-2 may also be connected to different circuit boards respectively. In this case, Figure 2 As shown, the third accommodating cavity 110 - 1 may be used to accommodate the first acoustic sensor 310 - 1 , and the fourth accommodating cavity 110 - 2 may be used to accommodate the second acoustic sensor 310 - 2 .

[0047] refer to Figure 3 , the acoustic sensor 310 may include a hole 311. For example, the acoustic sensor 310 may include at least one microphone, and the microphone is provided with a hole 311 for receiving the ambient sound through the waterproof component 200. The acoustic sensor 310 may also include at least one speaker. The speaker includes a hole 311. The speaker can emit a target sound when working. The target sound can be output from the hole 311 and then transmitted out of the acoustic device 01 through the waterproof component 200. The waterproof component 200 covers the sound hole 120 to prevent liquid from contacting specific components in the acoustic component 300 through the waterproof component 200. Specifically, the waterproof component 200 prevents liquid from contacting the acoustic sensor 310 through the waterproof component 200, and prevents liquid from entering the interior of the acoustic sensor 310 through the hole 311, causing damage to the acoustic sensor 310 and affecting the acoustic performance of the acoustic device 01.

[0048] The acoustic assembly 300 may further include a circuit board 320. The acoustic sensor 310 is connected to the circuit board 320. As an example, the acoustic sensor 310 may be mechanically connected to the circuit board 320, and the mechanical connection may be bonding, SMT patch, manual welding, seam connection, riveting, etc. For example, the acoustic sensor 310 may be fixed to the circuit board 320 by welding. For another example, the acoustic sensor 310 may be bonded to the circuit board 320 by glue.

[0049] The circuit board 320 may be located between the acoustic sensor 310 and the waterproof component 200. Figure 3As shown, the circuit board 320 can be plate-shaped and can be abutted against the end face of the pressure-bearing device 500 facing the waterproof component 200. Among them, the circuit board 320 is installed at the open end of the first accommodating cavity 110 and forms the first gap T1 with the open end. The circuit board 320 is a chip integrated circuit integrating the functions of the acoustic device 01 and can realize the control of the acoustic sensor 310. In some embodiments, the circuit board includes a radio frequency unit for receiving and transmitting signals, such as communication components such as Bluetooth, NFC, and Wifi, to realize communication with an external media player. In some embodiments, the circuit board includes a CPU unit for processing data and a DSP unit for audio decoding. In some embodiments, the circuit board further includes a data storage unit for storing audio data. The circuit board can be used for short-distance wireless communication, audio transmission, data transmission, data storage, location services, device networking, etc. This specification does not limit the type of the circuit board. Specifically, the circuit board can include a flexible printed circuit (FPC), a rigid printed circuit board (PCB), and a rigid-flex printed circuit board (Rigid-Flex PCB). That is, the circuit board can be any circuit or processor capable of performing one or more functions, or any combination thereof.

[0050] In some embodiments, one of the end faces of the circuit board 320 and the open end of the first accommodating cavity 110 may include a positioning hole 530, and the other includes a positioning protrusion 132. In some embodiments, the positioning hole 530 may be opened on the circuit board 320 to realize the fixation of the circuit board 320. Specifically, the circuit board 320 includes at least one positioning hole 530 for positioning and installing the circuit board 320. Positioning protrusions 130 corresponding to the foregoing positioning holes 530 one by one are provided on the end face around the open end of the first accommodating cavity 110, and each positioning protrusion 130 passes through its corresponding positioning hole 530. In some embodiments, the number of the foregoing positioning protrusions 132 may be not less than 2 and evenly surround the first accommodating cavity 110. The positioning protrusion may include an enlarged end 132, wherein the radial dimension of the end 132 is greater than the aperture of the positioning hole 530 to fix the circuit board 320 on the end face of the open end. In this way, the positioning of the circuit board 320 can be realized through the hard connection between the positioning hole 530 and the positioning protrusion 130, and further the circuit board 320 can be fixed on the inner wall of the housing 100. With such a setting, it is not necessary to apply or inject a sealing adhesive onto the circuit board 320 to fix the circuit board 320 to the housing 100, which can avoid assembly failure caused by excessive glue overflow and improve the assembly efficiency. It should be noted that the number of the positioning holes 530 can be one or more, and the number of the positioning protrusions 130 can also be one or more, which is not limited herein.

[0051] As described above, one end of the acoustic component 300 is connected to the waterproof component 200. For example, the acoustic component 300 can be bonded to the waterproof component 200 through the bonding area therebetween, thereby achieving the connection with the waterproof component 200. In some embodiments, a pressure jig can be used to apply a pressure F to the acoustic component 300, so that the circuit board 320 can be firmly bonded to the bonding area of the waterproof component 200. In some embodiments, the circuit board 320 can also be subjected to local or overall strengthening treatment, that is, increasing the local thickness or hardness of the circuit board 320. For example, a steel plate or a PI reinforcement plate can be used to reinforce the FPC. Among them, PI is the abbreviation of polyimide, and the PI material is an engineering plastic with excellent mechanical properties, having the characteristics of light weight, thin thickness and good bendability. The circuit board 320 can include holes 321. Among them, the second opening 122 of the sound passage hole 120 on the inner wall of the housing 100, the hole 321 and the hole 311 can be coaxial, so that the path for sound to enter or exit the acoustic device 01 is the shortest, reducing energy consumption. In some embodiments, the aperture of the hole 311 can be less than or equal to the aperture of the hole 321, and the aperture of the hole 321 can be less than the aperture of the sound passage hole 120. Designing the aperture of the sound passage hole 120 to be relatively large can increase the sound pressure. For example, the average diameter of the sound passage hole 120 can be 0.6 mm - 1.2 mm, the aperture of the hole 321 can be 0.5 mm, and the aperture of the hole 311 can be 0.25 mm.

[0052] As described above, the sound passage hole 120 penetrates through the housing 100 and communicates the internal space of the housing 100 with the external space. The waterproof component 200 can be disposed in the internal space and cover the sound passage hole 120 to prevent liquid from entering the internal space from the external space.

[0053] As Figure 3 shown, in some embodiments, the waterproof component 200 can further include a waterproof film 230, a first bonding portion 210 and a second bonding portion 220. The first bonding portion 210 is located on one side of the waterproof film 230 along Figure 3 the first direction shown; the second bonding portion 220 is located on the other side of the waterproof film 230 along the first direction. According to some embodiments of the present application, both the first bonding portion 210 and the second bonding portion 220 are annular, and the target position includes the annular region.

[0054] Refer to Figure 3, the waterproof component 200 can cover the second opening 122 of the sound passage hole 120. The waterproof component 200 allows sound waves to enter the internal space of the housing 100 from the external space of the housing 100, while preventing liquid from entering the internal space of the housing 100 from the external space of the housing 100. The acoustic component 400 is in the internal space on the side of the waterproof component 200 away from the sound passage hole 120, so it will not be directly in contact with water, ensuring the acoustic performance of the acoustic component 400. As an example, the liquid can be water. Of course, in addition to water, the liquid can also be other liquid substances. For example, the liquid can be fruit juice, liquid glue, and so on.

[0055] In some embodiments, a pressure jig can be used to apply a preset pressure F to the waterproof component 200 in the first direction, so that the waterproof component 200 is bonded to the outer edge of the second opening 122. As an example, the waterproof component 200 is in a sheet shape, and the first direction can be the normal direction of the waterproof component 200, that is, a preset pressure F is applied to the waterproof component 200 perpendicular to the surface of the waterproof component 200. In this way, it is possible to avoid the waterproof component 200 being subjected to a lateral force and thus prevent the waterproof component 200 from wrinkling and affecting its waterproof performance.

[0056] As described above, the acoustic component 300 can be connected to the waterproof component 200 by bonding to the bonding area of the waterproof component 200. Exemplarily, the acoustic component 300 can be connected to the waterproof component 200 through the second bonding portion 220. After the waterproof component 200 and the acoustic component 300 are installed in the first accommodation cavity 110, the waterproof component 200 can be connected to the first accommodation cavity 100 through the first bonding portion 210. At this time, the first bonding portion 210 and the second bonding portion 220 are in a compressed state in the first direction. That is to say, when the acoustic device 01 is in a normal working state, the first bonding portion 210 and the second bonding portion 220 are in a compressed state in the first direction.

[0057] The waterproof film 230 can be a thin film made of a special material. Sound waves can pass through the waterproof film 230, but liquid (such as water) cannot pass through the waterproof film 230. As an example, the waterproof film 230 can be made of a material with an equivalent microporous structure. The characteristic of the waterproof film 230 made of a material with an equivalent microporous structure is that air molecules can pass through the equivalent microporous structure, and water molecules cannot pass through the equivalent microporous structure. Among them, the equivalent microporous structure can be considered as any structure that can achieve the effect that can be achieved by using micropores but does not have regular micropores. Further, the surface tension of the waterproof film 230 can make water droplets form spherical shapes on the surface of the film, thereby reducing the contact area between water molecules and the waterproof film 230, and further improving the waterproof effect of the waterproof film 230.

[0058] The first bonding portion 210 is located on the side of the waterproof film 230 closer to the sound passage hole 120 along the first direction, and the first bonding portion 210 has adhesiveness. In some embodiments, the first bonding portion 210 may be annular and surround the second opening 122. One side of the first bonding portion 210 may be in contact with the edge of the waterproof film 230, and the other side may be in contact with the outer edge of the second opening 122. A central hole 211 may be formed in the first bonding portion 210. The central hole 211 may be a cylindrical hole, so that the waterproof film 230 can uniformly receive the water pressure of the water flowing in from the sound passage hole 120, so that the waterproof film 230 is not easily damaged due to uneven water pressure, resulting in a reduction or even failure of the waterproof effect of the waterproof component 200. The shape of the central hole 211 may also be any shape such as an ellipse, a square, a rectangle, etc., and the present application does not limit the shape of the central hole 211 here. In some embodiments, the shape of the central hole 211 may be adapted to the shape of the sound passage hole 120. The aperture of the sound passage hole 120 may be less than or equal to the aperture of the central hole 211, so that a larger area of the waterproof film 230 can bear the water pressure and is not easily damaged. For example, the aperture of the central hole 211 may be 0.8 mm - 1.8 mm. For example, the central hole 211 may be 0.8 mm, 1 mm, 1.2 mm, 1.4 mm, 1.6 mm, 1.8 mm, etc. and other values between any two values. The average diameter of the sound passage hole 120 may be 0.6 mm - 1.2 mm. For example, the aperture of the sound passage hole 120 may be 0.6 mm, 0.8 mm, 1.0 mm, 1.2 mm, etc. and other values between any two values. The first bonding portion 210 may also have elasticity. The first bonding portion 210 can evenly disperse the high-speed physical pressure (impact energy) by virtue of its elasticity. Since the first bonding portion 210 has elasticity, the waterproof film 230 can be protected from being wrinkled due to a large impact during the installation of the waterproof component 200, thereby affecting its acoustic performance. For example, the first bonding portion 210 may include a foam adhesive or an elastic acrylic adhesive.

[0059] The second bonding portion 220 is located on the other side of the waterproof film 230 away from the sound conduction hole 120 along the first direction. In some embodiments, the second bonding portion 220 may be annular. A central hole 221 may be formed in the second bonding portion 220. The sound wave passing through the waterproof film 230 is collected by the acoustic component after passing through the central hole 221. The second bonding portion 220 has adhesiveness. One side of the second bonding portion 220 may be bonded to the edge area of the side of the waterproof film 230 away from the sound conduction hole 120, and the other side of the second bonding portion may be bonded to the acoustic component 200. The second bonding portion 220 may also have elasticity. The second bonding portion 220 can also have elasticity and can evenly disperse high-speed physical pressure (impact energy) by virtue of its elasticity. Since the second bonding portion 220 can also have elasticity, it can protect the waterproof film 230 from wrinkling due to a large impact during the installation of the waterproof component 200 by the installer, thereby affecting its acoustic performance. In some embodiments, the material of the second bonding portion 220 may be foam adhesive, or foam + acrylic adhesive (acrylate adhesive), or acrylic adhesive (acrylate adhesive).

[0060] In some embodiments, the waterproof component 200 may further include a mesh 240. As Figure 3 shown, the mesh 240 may be disposed on the side of the waterproof component 200 away from the sound conduction hole 120. When the waterproof film 230 encounters a large water pressure, the waterproof film 230 may be deformed. At this time, the mesh 240 can play a role of support or block behind the waterproof film 230, so as to avoid excessive deformation of the waterproof film 230, and further avoid the change of the acoustic performance of the waterproof film 230, so as to increase the waterproof ability of the waterproof film 230. At this time, the second bonding portion 220 may be bonded to the mesh 240. The side of the mesh 240 facing the acoustic component 300 may be fixedly bonded to the acoustic component 300. In some embodiments, the mesh 240 may also be disposed on the side of the waterproof component 200 close to the sound conduction hole 120 (not shown in the figure). When the user wears the earphone for underwater activities, the water flow may enter the acoustic device 01 from the sound conduction hole 120. At this time, the water flow will first flow through the mesh 240. The mesh 240 can disperse the water flow through the mesh holes, so that the impact force received by the waterproof film 230 is relatively dispersed, and further the force on each part of the waterproof film 230 is relatively small, and the waterproof film 230 is not easily deformed, so as to increase the waterproof ability of the waterproof film 230 (the waterproof component 200).

[0061] To minimize the impact on the acoustic performance, the waterproof film 230 is usually very thin. Coupled with the material characteristics of the waterproof film 230 itself, any uneven external force may cause the waterproof film 230 to wrinkle. Once the waterproof film 230 wrinkles, it will affect the acoustic performance of the acoustic device 01. This poses a very high requirement for the installation of the waterproof film 230 - during the installation of the waterproof film, it is necessary to avoid wrinkling the waterproof film 230.

[0062] In some embodiments, when installing the waterproof component 200, the waterproof component 200 can be first placed in the first accommodating cavity 110, and then the acoustic component 300 is stacked thereon. A pressure jig applies a pressure F to the acoustic sensor 310 in the acoustic component 300 along the normal direction of the waterproof component 200 (i.e., the first direction). The circuit board 320 connected to the acoustic sensor 310 transmits the pressure F downward to the waterproof component 200, and the waterproof component 200 is compressed. At this time, one side of the waterproof component 200 is tightly adhered to the circuit board 320, and the other side is tightly adhered to the edge of the second opening 122.

[0063] In the above installation process, the pressure F applied by the pressure jig will be concentrated on the upper surface of the acoustic sensor 310, and is transmitted downward from the acoustic sensor 310 to the circuit board 320 and then applied to the outer edge of the waterproof component 200. Generally, the size of the acoustic sensor 310 is smaller than the sizes of the circuit board 320 and the waterproof component 200. That is, the force-bearing area of the acoustic component 300 that bears the pressure F of the pressure jig is relatively small, and the force will ultimately be transmitted to the edge area of the waterproof component 200, and the force-bearing area of the edge area of the waterproof component 200 is larger than the force-bearing area of the acoustic component 300. During this process, once the acoustic component 300 has a slight deformation, this deformation will directly cause uneven pressure applied to the edge of the waterproof component 200, thereby causing the waterproof film 230 to wrinkle. For example, it will directly cause uneven stress on the first bonding portion 210 and the second bonding portion 220 of the waterproof component 200, affecting the waterproof film 230 located between the first bonding portion 210 and the second bonding portion 220, causing the waterproof film 230 to wrinkle and deform. Especially for the case where the circuit board 320 is a flexible circuit board, when pressure is applied to the acoustic sensor 310, the edge of the flexible circuit board is also prone to deformation.

[0064] To prevent the above situation, the acoustic device 01 provided in the present application further includes a pressure-bearing device 500. The pressure-bearing device 500 covers the acoustic component 300. When the pressure-bearing device 500 is subjected to an external force along the first direction, it transmits the force to the target position of the waterproof component 200, so that the waterproof component 200 abuts against the inner wall 102. For example, as Figure 3As shown, a pressure F is applied to the pressure-bearing device 500 along a first direction, and the pressure-bearing device 500 can evenly apply the pressure F to the target position of the waterproof component 200. As an example, the target position includes the outer edge of the waterproof component 200. The pressure F is evenly transmitted through the pressure-bearing device 500 to prevent the waterproof component 200 from wrinkling. In some embodiments, the pressure-bearing device 500 is made of a hard material. The hard material may include hard plastic and hard alloy. The use of a hard material in the pressure-bearing device 500 can avoid deformation of the pressure-bearing device when it is subjected to the pressure F, thereby avoiding uneven force applied to the target position of the acoustic component 300. Among them, the first direction is Figure 3 The first direction shown in .

[0065] refer to Figure 3 , the pressure-bearing device 500 may be columnar. The pressure-bearing device 500 may include a second accommodating chamber 520. The acoustic sensor 310 may be located in the second accommodating chamber 520. The pressure-bearing device may be in the shape of a hat, and the cover is arranged on the acoustic component 300. Exemplarily, the acoustic sensor 310 may be installed in the second accommodating chamber 520, which may save space. In some embodiments, in a second direction perpendicular to the first direction, the outer edge size of the pressure-bearing device 500 is larger than the outer edge size of the acoustic sensor 310. In some embodiments, in the second direction, the outer edge size of the pressure-bearing device 500 is larger than the outer edge size of the waterproof component 200. According to the above description, the first direction refers to the normal direction of the waterproof membrane, and the second direction is perpendicular to the first direction, for example, the second direction is parallel to the waterproof membrane 230. In this way, when the pressure jig applies pressure, the pressure-bearing device 500 with a larger outer edge size is pressed and the pressure is evenly transferred to the acoustic component 300, so as to prevent the deformation of the acoustic component 300 from affecting the waterproof membrane.

[0066] In some embodiments, Figure 3 As shown, the pressure-bearing device 500 can be installed at the open end of the first accommodating cavity 110, and the pressure-bearing device 500 and the port 111 at the open end form a second gap T2, and the seal 400 can further fill the second gap T2. As an example, the waterproof component 200 can be placed in the first accommodating cavity 110 first, and then the acoustic component 300 and the pressure-bearing device 500 are stacked in sequence, and the pressure F is applied to the pressure-bearing device 500 by a pressure jig, so that the first bonding portion 210 and the second bonding portion 220 of the waterproof component 200 are compressed. At this time, the pressure F is maintained for a period of time, and the seal 400 such as a fluid sealant is applied or filled to the port 111, and the seal 400 can enter the first gap T1 through the second gap T2, that is, the seal 400 can simultaneously seal the first gap T1 and the second gap T2, thereby preventing water from entering the second gap T2 from the first gap T1, and finally entering the internal space of the shell 100.

[0067] Under the action of the force F applied by the pressure fixture, one end of the pressure-bearing device 500 (the end of the pressure-bearing device 500 shown in the figure closer to the sound passage hole 120) enters the first accommodation cavity 110 from the port 111 along the first direction. If the second gap T2 is too large, the pressure-bearing device 500 may shake laterally, resulting in wrinkles in the waterproof component 200. As an example, the second gap T2 is not greater than a preset value (such as 0.5 mm) to limit the position offset of the pressure-bearing device 500 in the second direction. Here, the second direction is a direction perpendicular to the first direction. It should be noted that the second direction can be any direction perpendicular to the first direction. Figure 3 The second direction shown in Figure 3 is only an exemplary display. Those skilled in the art should know that other directions different from the second direction in Figure 3 and perpendicular to the first direction are within the protection scope of the specification. For example, the second direction can be a direction opposite to the second direction shown in

[0068] and perpendicular to the first direction.

[0069] Figure 3 In the shown embodiment, the pressure fixture applies the pressure F to the middle part of the first end face 511 of the pressure-bearing device 500 along the first direction. The pressure-bearing device 500 first uniformly transfers the pressure F to each part of the pressure-bearing device 500, especially the second end face 512 in contact with the circuit board 320. Then, the pressure F can be uniformly transferred to the circuit board 320 and finally uniformly transferred to the outer edge of the waterproof component 200. When the waterproof component 200 reaches the expected compression amount, keep the pressure fixture stationary, and apply or inject a fluid sealant to the port 111 of the pressure-bearing device 500 and the first accommodation cavity 110 to seal the gap, that is, the second gap T2, between the mating parts of the pressure-bearing device 500 and the first accommodation cavity 110. At the same time, the pressure-bearing device 500 can also be fixed. In some embodiments, in order to strengthen the seal and the fixation of the pressure-bearing device 500, the sealant can be applied to the first end face 511 of the pressure-bearing device 500.

[0070] As an example, Figure 4The structural schematic diagram of another pressure-bearing device 500 provided according to an embodiment of the present application is shown.

[0071] Referring to Figure 4 , in some embodiments, the pressure-bearing device 500 may be in the shape of a "hat with a brim". The pressure-bearing device 500 may include a main body portion and an edge portion. The main body portion is located at the center of the pressure-bearing device and is used to bear the pressure of the pressure fixture. The outer edge portion is located at the periphery of the main body portion and surrounds the main body portion in a ring shape, similar to a brim. The ring shape may be a circular ring, a square ring, a triangular ring or other shapes, etc., and the present application does not limit this.

[0072] In some embodiments, one of the pressure-bearing device 500 and the inner wall 102 of the housing 100 may include a positioning hole 530, and the other includes a positioning protrusion 132, so as to fix the pressure-bearing device 500 on the inner wall 102 of the housing 100. Among them, the positioning hole 530 may be provided on the pressure-bearing device 500, and the positioning protrusion 132 is provided on the inner wall 102 of the housing 100. Conversely, the positioning hole 530 may also be provided on the inner wall 102 of the housing 100, and the positioning protrusion 132 is provided on the pressure-bearing device 500. For the convenience of display, the following description takes the positioning hole 530 being provided on the pressure-bearing device 500 and the positioning protrusion 132 being provided on the inner wall 102 of the housing 100 as an example for description. Those skilled in the art should understand that other situations are also within the protection scope of this specification.

[0073] Specifically, referring to Figure 4 , the pressure-bearing device 500 includes a positioning hole 530. A positioning protrusion 130 is provided on the inner wall 102 of the housing 100. Among them, the positioning hole 530 and the positioning protrusion 130 are matched. The so-called matching may be that the shapes and sizes of the mating surfaces of the positioning hole 530 and the positioning protrusion 130 are matched. When the pressure-bearing device 500 is fitted with the inner wall 102, the positioning protrusion 130 passes through the positioning hole 530, and the positioning hole 530 plays a guiding role so that the positioning protrusion 130 can be installed along the positioning hole 530. Among them, the cross-sectional shape of the positioning hole 530 may be triangular, rectangular, dovetail-shaped, circular, etc. The number of positioning holes 530 may be one or more, and the number of positioning protrusions 130 may also be one or more. In some embodiments, the number of positioning protrusions 132 may be not less than 2 and evenly surround the first accommodation cavity 110.

[0074] In addition, the above-mentioned positioning protrusion 132 includes an enlarged end portion 132 to fix the pressure-bearing device 500 on the inner wall 102 of the housing 100. Among them, the radial dimension of the end portion 132 is larger than the aperture of the positioning hole 530 to fix the pressure-bearing device 500 on the inner wall 102. In this way, the positioning of the pressure-bearing device 500 can be achieved through the hard connection between the positioning hole 530 and the positioning protrusion 130, and further the pressure-bearing device 500 is fixed on the inner wall of the housing 100. With such a setting, it is not necessary to apply or inject sealant on the first end face 511 of the pressure-bearing device 500 to fix the pressure-bearing device 500 to the housing, which can avoid assembly failure caused by excessive glue overflow when the pressure jig is adhered to the pressure-bearing device, and improve the assembly efficiency.

[0075] Furthermore, the amount by which the waterproof component 300 needs to be compressed can be calculated based on the difference between the total height of the pressure-bearing device 500, the acoustic component 300, and the waterproof component 200 after assembly in the uncompressed state and the total height of the three in the compressed state. Then, the height of the first accommodating cavity 110 can be reasonably designed so that the second end face 512 of the pressure-bearing device 500 is higher than the inner wall 102 of the housing by a certain preset distance in the uncompressed state, that is, there is a preset distance between the second end face 512 of the pressure-bearing device 500 and the inner wall 102 of the housing in the uncompressed state, and this preset distance can be the compression amount of the waterproof component 200 required by the design. With such a setting, as long as the pressure-bearing device 500 is pressed down and its second end face 512 abuts against the edge of the first accommodating cavity 110, the waterproof component 200 can be compressed to the target state, with simple operation, high precision, improved efficiency, and reduced cost.

[0076] In some embodiments, the positioning protrusion 130 can be made of a heat-meltable material, and the end portion of the positioning protrusion 130 forms the aforementioned enlarged end portion 132 after being heat-melted and pressed. As an example, the positioning protrusion 130 includes a rod portion 131, and the top end of the rod portion 131 forms an enlarged end portion 132 after being heat-melted and pressed. The method of heat-melting and pressing is used to form a structure similar to a rivet for the positioning protrusion 130 to fix the pressure-bearing device 500 on the housing 100. This not only has simple operation and high efficiency, but also the heat-melted material can simultaneously seal the gap between the positioning protrusion 130 and the positioning hole 530, eliminating the need to seal the gap between the positioning protrusion 130 and the positioning hole 530 again, with simple operation, high efficiency, and reduced cost.

[0077] In some embodiments, the housing 100 may further include one or more channels. After the waterproof component 200, the acoustic component 300, and the pressure-bearing device 500 are fixed on the inner wall of the housing 100 (e.g., within the first accommodation cavity 110), the seal 40 can be filled into the first gap T1 and the second gap T2 through the channels. In some embodiments, the channels may be provided on the housing 100, such as on the bottom wall 103 or the side wall 104 of the housing. In some embodiments, the channels may be provided on the pressure-bearing device 500, such as in the edge region of the first end face 511 of the pressure-bearing device 500. In some embodiments, the gap between the pressure-bearing device 500 and the housing 100 after assembly constitutes part or all of the channel.

[0078] In summary, the present application provides an acoustic device 01 with waterproof treatment. A waterproof component 200 is provided at the sound passage hole communicating with the internal space of the housing. The waterproof component 200 covers the second opening 122 of the sound passage hole 120, so that liquid will not enter the sound passage hole 311 of the acoustic sensor 310, and can prevent liquids such as water from entering the interior of the housing, thus not affecting the acoustic performance of the acoustic sensor 310. By means of the pressure-bearing device 500, an external force is evenly applied to the target position of the waterproof component 200, which can prevent the waterproof component 200 from wrinkling during installation, and while achieving the waterproof performance, avoid the adverse effect of the wrinkling of the waterproof component 200 on the acoustic performance, so that the acoustic device 01 can be both waterproof and have good acoustic performance. The first gap T1 between the acoustic component 300 and the housing 100 and the second gap T2 between the pressure-bearing device 500 and the housing 100 are sealed by the seal 400, further enhancing the waterproof performance, thereby providing waterproof protection for other components and circuits within the housing 100. Through the above design, the waterproof ability of the acoustic device 01 is improved and the acoustic performance of the acoustic device 01 is ensured.

[0079] The above describes specific embodiments of the present application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims may be performed in a different order than in the embodiments and still achieve the desired result. Additionally, the processes depicted in the figures do not necessarily require a specific order or a sequential order to achieve the desired result. In certain embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0080] In summary, after reading this detailed disclosure, those skilled in the art will understand that the foregoing detailed disclosure may be presented by way of example only and may not be restrictive. Although not explicitly stated herein, those skilled in the art can understand that the requirements of this application encompass various reasonable changes, improvements, and modifications to the embodiments. These changes, improvements, and modifications are intended to be proposed by this application and are within the spirit and scope of the exemplary embodiments of this application.

[0081] In addition, certain terms in this application have been used to describe the embodiments of this application. For example, "an embodiment", "embodiment" and / or "some embodiments" mean that the specific features, structures, or characteristics described in connection with that embodiment may be included in at least one embodiment of this application. Thus, it should be emphasized and understood that two or more references to "an embodiment" or "one embodiment" or "alternative embodiments" in various parts of this application do not necessarily all refer to the same embodiment. Moreover, the specific features, structures, or characteristics may be appropriately combined in one or more embodiments of this application.

[0082] It should be understood that in the foregoing description of the embodiments of this application, for the purpose of helping to understand a feature, for the purpose of simplifying this application, this application combines various features in a single embodiment, drawing, or its description. However, this does not mean that the combination of these features is necessary. Those skilled in the art may well extract some of these features as separate embodiments for understanding when reading this application. That is to say, the embodiments in this application can also be understood as the integration of multiple sub-embodiments. And it is also valid when the content of each sub-embodiment is less than all the features of a single foregoing disclosed embodiment.

[0083] Each patent, patent application, published patent application, and other materials cited herein, such as articles, books, specifications, publications, documents, items, etc., may be incorporated herein by reference. The entire content for all purposes, except for any prosecution file history associated therewith, any identical that may be inconsistent or in conflict with this document, or any identical prosecution file history that may have a limiting effect on the broadest scope of the claims. Now or later associated with this document. For example, if there is any inconsistency or conflict between the description, definition, and / or use of terms associated with any of the included materials and the terms, descriptions, definitions, and / or in this document, the terms in this document shall prevail.

[0084] Finally, it should be understood that the embodiments of the application disclosed herein are illustrative of the principles of the embodiments of the present application. Other modified embodiments are also within the scope of the present application. Therefore, the embodiments disclosed in the present application are merely examples and not limitations. Those skilled in the art can adopt alternative configurations according to the embodiments in the present application to implement the application in the present application. Therefore, the embodiments of the present application are not limited to the embodiments precisely described in the application.

Claims

1. An acoustic device, characterized in that, Comprising: A housing, including an outer wall, an inner wall, and a sound passage hole, the sound passage hole penetrating through the housing and communicating the internal space of the housing with the external space; A waterproof component, disposed in the internal space and covering the sound passage hole to prevent liquid from entering the internal space from the external space; An acoustic component, including an acoustic sensor, the acoustic component being disposed on a side of the waterproof component away from the sound passage hole and hermetically connected to the waterproof component, the acoustic component and the housing forming a first gap; A pressure-bearing device, covering the acoustic component; And A seal, sealing the first gap to prevent the liquid from entering the internal space through the first gap.

2. The acoustic device according to claim 1, characterized in that, When the pressure-bearing device is subjected to an external force in a first direction, the force is transmitted to a target position of the waterproof component, causing the waterproof component to abut against the inner wall. In a second direction perpendicular to the first direction, an outer edge dimension of the pressure-bearing device is larger than an outer edge dimension of the acoustic sensor.

3. The acoustic device according to claim 2, wherein, Wherein, The waterproof component includes: A waterproof film; A first bonding portion, located on one side of the waterproof film along the first direction; and A second bonding portion, located on the other side of the waterproof film along the first direction, wherein, Both the first bonding portion and the second bonding portion are annular; The target position includes the annular region.

4. The acoustic device according to claim 3, wherein, Wherein, The first bonding portion and the second bonding portion are in a compressed state in the first direction.

5. The acoustic device according to claim 1, characterized in that, The housing includes a first accommodation cavity, and the waterproof component is disposed in the first accommodation cavity.

6. The acoustic device according to claim 5, characterized in that, The acoustic component further includes a circuit board, and the acoustic sensor is mechanically connected to the circuit board; The circuit board is installed at an open end of the first accommodation cavity and forms the first gap with the open end.

7. The acoustic device according to claim 5 or 6, characterized in that, The pressure-bearing device is installed at the open end of the first accommodation cavity and forms a second gap with the open end, and the seal fills the second gap.

8. The acoustic device according to claim 6, wherein, The pressure-bearing device includes a pressure-bearing housing and a second accommodation cavity, and the acoustic sensor is located in the second accommodation cavity; Along the first direction, the pressure-bearing housing includes a first end face and a second end face, the second end face abuts against the circuit board, and the first end face is away from the circuit board to bear the external force.

9. The acoustic device according to claim 6, wherein Wherein, The circuit board includes at least one positioning hole; and At least one positioning protrusion is provided on an end face surrounding the open end, corresponding to the at least one positioning hole one by one, and the at least one positioning protrusion passes through the at least one positioning hole.

10. The acoustic device according to claim 9, characterized in that, Wherein, At least one of the positioning protrusions includes an enlarged end portion, a radial dimension of the end portion being larger than a diameter of the positioning hole, fixing the circuit board on the end face.

11. The acoustic device according to claim 2, characterized in that, Wherein, An included angle between a central axis of the sound passage hole and the first direction is not less than 30° and not more than 60°; The sound passage hole includes a first opening on the outer wall and a second opening on the inner wall, the second opening being smaller than the first opening; and An average diameter of the sound passage hole is 0.6 - 1.2 mm.

12. The acoustic device according to claim 1, characterized in that, The seal is obtained by providing a fluid sealing material to the first gap and then curing, and the fluid sealing material is a sealant.

Images