Acoustic device

Abstract

The present application provides an acoustic device. The acoustic device comprises a housing, a waterproof assembly, an acoustic assembly, and a sealing member. The housing comprises an accommodating cavity, and the accommodating cavity is provided with a first sound through hole; the waterproof assembly is arranged in the accommodating cavity and is sealedly connected to the accommodating cavity and covers the first sound through hole to prevent a liquid from making contact with an acoustic sensor through the waterproof assembly; the acoustic assembly comprises the acoustic sensor, in the accommodating cavity, the acoustic sensor is arranged on the side of the waterproof assembly distant from the sound through hole, and is sealedly connected to the waterproof assembly, and the acoustic assembly and the accommodating cavity form a first gap; and the sealing member seals the first gap so as to fix the acoustic assembly and prevent the liquid from entering the inner space of the housing by means of the first gap. The waterproof assembly is provided at the first sound through hole and the sealing member is used to seal the first gap, preventing the liquid from flowing into the housing or making contact with the acoustic sensor, thus increasing the waterproof capability of the acoustic device.

Description

An acoustic device Technical Field

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

[0002] The shell of an acoustic device is usually provided with a sound hole 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 outdoors or in a humid environment, liquids such as water can easily enter the acoustic device through the sound hole on the shell. For example, the microphone of a wireless headset must have a sound hole to pick up ambient sound and ensure call quality, thereby performing air conduction sound transmission. When a user wears a wireless headset for underwater activities (such as swimming), water will enter the headset through the sound hole. When a wireless headset gets wet, it may not only affect the normal use function of its internal components, such as causing the microphone or speaker to fail, but may even cause a circuit short circuit on the motherboard or some components, resulting in the user being unable to use it normally.

[0003] Therefore, existing acoustic equipment needs to take certain measures to improve its waterproof protection performance, especially the waterproof protection of components such as microphones and speakers should be strengthened.

[0004] Summary of the Invention

[0005] This specification provides an acoustic device, comprising: a shell, a waterproof component, an acoustic component and a seal; the shell comprises a accommodating cavity, the accommodating cavity is provided with a first sound hole; the waterproof component is placed in the accommodating cavity, is sealed with the accommodating cavity and covers the first sound hole to prevent liquid from passing through the waterproof component and contacting the acoustic sensor; the acoustic component comprises the acoustic sensor, which is placed in the accommodating cavity on a side of the waterproof component away from the sound hole and is sealed with the waterproof component, and a first gap is formed between the acoustic component and the accommodating cavity; the seal seals the first gap to fix the acoustic component and prevent the liquid from entering the internal space of the shell through the first gap.

[0006] In some embodiments, the waterproof component has a first adhesive surface and a second adhesive surface; the first adhesive surface is sticky so as to stick the waterproof component in the accommodating cavity after being subjected to external pressure; and the second adhesive surface is sticky so as to bond the waterproof component and the acoustic component when in contact with the acoustic component.

[0007] In some embodiments, the waterproof component and the accommodating cavity form a second gap, and the sealing member further seals the second gap to prevent the liquid from passing through the second gap to reach the first gap.

[0008] In some embodiments, the waterproof component includes a waterproof membrane and at least one buffer member; the at least one buffer member is provided with a center hole and abuts against the edge area of ​​the waterproof membrane, and the aperture of the first sound hole is less than or equal to the aperture of the center hole, wherein the at least one buffer member undergoes a target deformation under the action of the acoustic component, and the target deformation is less than 50%.

[0009] In some embodiments, the acoustic sensor includes at least one microphone for receiving ambient sound through the waterproof component; or the acoustic sensor includes at least one speaker for emitting a target sound when in operation, and the target sound is transmitted out of the acoustic device through the waterproof component.

[0010] In some embodiments, the acoustic component also includes a flexible circuit board, which is located between the acoustic sensor and the waterproof component and is mechanically connected to the acoustic sensor; the flexible circuit board includes a second sound hole, the acoustic sensor includes a third sound hole, and the second sound hole and the third sound hole are coaxial.

[0011] In some embodiments, a diameter of the third sound hole is not larger than a diameter of the second sound hole; and a diameter of the second sound hole is smaller than a diameter of the first sound hole.

[0012] In some embodiments, the waterproof component further includes a gauze, and the gauze is arranged on a side of the waterproof component close to the first sound hole.

[0013] In some embodiments, the waterproof component further includes a gauze, and the gauze is arranged on a side of the waterproof component away from the first sound hole.

[0014] In some embodiments, the inner wall of the shell forms a receiving side wall of the receiving cavity; the acoustic component also includes a flexible circuit board, which is mechanically connected to the acoustic sensor; and the height of the receiving side wall is higher than the upper surface of the flexible circuit board, thereby forming a first receiving space to accommodate the seal.

[0015] In some embodiments, the flexible circuit board passes over the accommodating side wall from the target section of the accommodating side wall.

[0016] The target section of the accommodating side wall has a flatter design compared to other parts of the accommodating side wall so as to reduce the bending degree of the flexible circuit board in the accommodating side wall section.

[0017] In some embodiments, the target section includes a guide opening and an inclined guide surface opened on the accommodating side wall, and the guide opening is connected to the inner wall of the shell through the guide surface to support the flexible circuit board.

[0018] In some embodiments, the flatter design includes at least one of a rounded corner design or a sloped design.

[0019] In some embodiments, the acoustic sensor includes a first acoustic sensor and a second acoustic sensor; the inner wall of the shell includes a shell bottom wall and a shell side wall; and the accommodating cavity includes: a first accommodating cavity, arranged on the shell bottom wall to accommodate the first acoustic sensor; and a second accommodating cavity, arranged on the shell side wall to accommodate the second acoustic sensor, wherein the first acoustic sensor and the second acoustic sensor are connected through the flexible circuit board.

[0020] In some embodiments, a diameter of the first sound hole on the inner wall of the housing is smaller than a diameter of the first sound hole on the outer wall of the housing.

[0021] In some embodiments, the waterproof component is sealed to the bottom wall of the accommodating cavity, and the central axis of the first sound hole is tilted relative to the bottom wall.

[0022] In some embodiments, the seal is obtained by providing a fluid sealing material into the first gap and then curing the fluid sealing material.

[0023] In some embodiments, the fluid sealing material is a sealant.

[0024] As can be seen from the above technical solution, the acoustic device provided in this specification, by installing a waterproof component at the first sound hole, prevents liquid from entering the acoustic sensor, thereby preventing it from affecting its acoustic performance. Furthermore, a sealant seals the first gap between the acoustic component and the accommodating cavity, preventing liquid from flowing into the interior of the housing, thereby providing waterproof protection for other components and circuitry within the housing. This design improves the waterproof capability of the acoustic device and ensures its acoustic performance.

[0025] Other functions of the acoustic device provided by this specification will be partially listed in the following description. The creative aspects of the acoustic device provided by this specification can be fully explained by practicing or using the methods, devices and combinations described in the following detailed examples. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of this specification, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of this specification. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0027] FIG1A shows a structural diagram of an acoustic device according to some embodiments of this specification;

[0028] FIG1B shows a cross-sectional view AA of the acoustic device shown in FIG1A according to this specification;

[0029] FIG2 is a schematic diagram showing a partial structure of an acoustic device according to some embodiments of this specification;

[0030] FIG3 shows a schematic structural diagram of two acoustic sensors provided according to some embodiments of this specification;

[0031] FIG4 shows a structural diagram of a first accommodating cavity according to some embodiments of this specification; and

[0032] FIG5 is a schematic diagram showing the sealing position of a sealing member according to some embodiments of the present specification. DETAILED DESCRIPTION

[0033] The following description provides specific application scenarios and requirements for this specification, with the goal of enabling those skilled in the art to make and use the contents of this specification. Various modifications to the disclosed embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other embodiments and applications without departing from the spirit and scope of this specification. Therefore, this specification is not limited to the embodiments shown, but is intended to be accorded the broadest scope consistent with the claims.

[0034] The terms used herein are for the purpose of describing specific example embodiments only and are not intended to be limiting. For example, as used herein, the singular forms "a," "an," and "the" may also include the plural forms unless the context clearly indicates otherwise. When used in this specification, the terms "comprise," "include," and / or "contain" are intended to refer to the presence of the associated integers, steps, operations, elements, and / or components, but do not preclude the presence 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.

[0035] In this application, terms such as "upper," "lower," "left," "right," "front," "back," "top," "bottom," "inner," "outer," "vertical," "horizontal," "transverse," and "longitudinal" indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are primarily intended to better describe this application and its embodiments and are not intended to limit the devices, elements, or components indicated to having a specific orientation, or to being constructed or operated in a specific orientation.

[0036] Furthermore, some of the above terms may be used to express other meanings besides indicating a position or location. For example, the term "on" may also be used to indicate a dependency or connection in certain circumstances. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0037] Furthermore, the terms "installed," "disposed," "provided with," "connected," and "connected" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integral structures; mechanical connections or electrical connections; direct connections, indirect connections through an intermediary, or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0038] In this specification, "X includes at least one of A, B, or C" means that X includes at least A, or X includes at least B, or X includes at least C. That is, X may include only any one of A, B, and C, or any combination of A, B, and C, as well as other possible contents / elements. Any combination of A, B, and C may be A, B, C, AB, AC, BC, or ABC.

[0039] In this specification, "or" and "and / or" describe the association relationship between associated objects and represent a non-exclusive inclusion. For example, each of "A and / or B" and "A or B" may include: only "A" exists, only "B" exists, and both "A" and "B" exist, where "A" and "B" may be singular or plural. For another example, each of "A, B and / or C" and "A, B or C" may include: only "A" exists, only "B" exists, only "C" exists, both "A" and "B" exist, both "A" and "C" exist, both "B" and "C" exist, and both "A", "B" and "C" exist, where "A", "B" and "C" exist, and "A", "B" and "C" exist, where "A", "B" and "C" may be singular or plural.

[0040] In this specification, "plurality" means two or more.

[0041] In this specification, unless otherwise specified, the association relationship 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 indirectly connected to B; for another example, when describing "A is above B", unless it is clearly stated that A is directly above B (AB are adjacent and A is above B), it should be understood that A can be directly above B or indirectly above B (AB is separated by other elements and A is above B). And so on.

[0042] These and other features of this specification, as well as the operation and function of the associated elements of the structure, and the economical assembly and manufacture of the components, can be significantly improved with consideration of the following description. Reference is made to the accompanying drawings, all of which form a part of this specification. However, it should be expressly understood that the drawings are for illustration and description purposes only and are not intended to limit the scope of this specification. It should also be understood that the drawings are not drawn to scale.

[0043] The present application is described in detail below through specific embodiments:

[0044] The shell of an acoustic device is usually provided with a sound hole 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. For example, in order to ensure the quality of calls, wireless headphones with a call function will leave a sound hole for the microphone to pick up sound and receive sound transmitted through the air. In order to prevent liquids such as water from entering the acoustic device after the acoustic device is used in the wild or in a humid environment, and to ensure that the acoustic device can still work normally, the sound hole of the acoustic device needs to be treated with liquid-proof treatment. This specification provides an acoustic device, and the sound hole is treated with liquid-proof treatment to improve the liquid-proof ability of the acoustic device. The liquids in this specification include but are not limited to water, oil, sweat and other liquids. For the convenience of description, water is used as an example below.

[0045] Figure 1A shows a structural diagram of an acoustic device 01 provided according to some embodiments of the present specification. Figure 1B shows a cross-sectional view AA of the acoustic device 01 shown in Figure 1A of the present specification. The acoustic device 01 shown in Figure 1A is a (wireless) headset. The following description will be made by taking the acoustic device 01 as a (wireless) headset as an example. The (wireless) headset may be a bone conduction headset, an air conduction headset, or a bone-air conduction headset. It is understood that the acoustic device 01 may also be other acoustic devices such as a mobile phone, a computer, a recorder, etc. The acoustic device 01 may include a housing 10, a waterproof component 20, an acoustic component 30, and a seal 40 (not shown in Figures 1A and 1B).

[0046] As shown in Figure 1B, the shell 10 can be an installation component of the acoustic device 01, and other components of the acoustic device 01 (such as the waterproof component 20, the acoustic component 30, etc.) can be installed with the shell 10 as a carrier. The shell 10 may include a shell bottom wall 130 and a shell side wall 140, and the shell bottom wall 130 and the shell side wall 140 together enclose an internal space, and other components of the acoustic device 01 can be arranged in the internal space. The shape of the shell 10 can be any shape, for example, it can be a runway shape (rounded rectangle) or a circle. In some embodiments, when the acoustic device 01 is a wireless headset, the shell 10 can be a shape that conforms to the contour of the human ear, so that the wireless headset can be worn more firmly on the user's ear. The material of the shell 10 can be any material, such as metal material, plastic material, polymer material, etc. This specification does not limit the shape and material of the shell 10.

[0047] The housing 10 may include a housing cavity 110 for accommodating other components, such as the acoustic assembly 30. In some embodiments, the inner wall of the housing 10 may form the housing sidewalls 111 and the housing bottom wall 112 of the housing cavity 110. For example, the housing bottom wall of the housing 10 may form both the housing bottom wall 112 and the housing sidewalls 111, or the housing bottom wall may form a portion of the housing bottom wall 112 and the housing sidewalls 111, while the housing sidewalls may form another portion of the housing sidewalls 111. In some embodiments, the housing cavity 110 may be a space enclosed by other components.

[0048] The accommodating cavity 110 may be provided with a first sound hole 120. For example, the first sound hole 120 may be provided on the accommodating bottom wall 112 of the accommodating cavity 110. In some embodiments, the diameter of the first sound hole 120 on the inner wall of the housing 10 may be smaller than the diameter of the first sound hole 120 on the outer wall of the housing 10, where the diameter refers to the diameter of the opening on the wall. In other words, the first sound hole 120 may be shaped like a trumpet with a larger outer portion and a smaller inner portion. By designing the first sound hole 120 into a trumpet shape, on the one hand, it is easier for the user to clean foreign matter such as solids or liquids that enter the first sound hole 120, and on the other hand, it facilitates demolding during the processing of the sound hole.

[0049] In some embodiments, the central axis of the first sound hole 120 can be tilted relative to the bottom wall 112 to prevent water from entering the interior of the shell through the first sound hole 120. The central axis of the first sound hole 120 can be a line connecting the center of the first opening of the first sound hole 120 on the inner wall of the shell 10 and the center of the second opening of the first sound hole 120 on the outer wall of the shell 10. The angle at which the central axis of the first sound hole 120 is tilted relative to the bottom wall 112 can be selected according to the design and processing requirements of the product without affecting the acoustic performance of the acoustic device 01. In some embodiments, the tilt angle can be in the range of 65°-80°, which reduces the processing difficulty of the first sound hole 120 while ensuring a certain degree of tilt. In some embodiments, the tilt angle can be in the range of 35°-60°. Ensuring that the tilt angle is within this range can further enhance the ability to prevent water from entering the interior of the shell through the first sound hole. In some applications, such as swimming, by tilting the first sound hole 120, when the acoustic device 01 is subjected to dynamic water pressure, water will not flow directly into the first sound hole 120, thereby improving the waterproof capability of the acoustic device 01 under dynamic water pressure. The shape of the first sound hole 120 can be any shape, such as circular, oval, square, rectangular, etc., and this specification does not limit the shape of the first sound hole 120.

[0050] In some embodiments, the acoustic device 01 may include a plurality of accommodating chambers 110 to accommodate a plurality of components respectively. For example, the accommodating chamber 110 may include a first accommodating chamber and a second accommodating chamber, and the first accommodating chamber may be arranged on the bottom wall 130 of the shell. The second accommodating chamber may be arranged on the side wall 140 of the shell, so that the sound holes in different accommodating chambers can receive sounds from different directions or transmit sounds to different directions. In some embodiments, the first accommodating chamber and the second accommodating chamber may both be arranged on the bottom wall 130 or the side wall 140 of the shell to enhance the ability of the sound holes to receive sounds from the same direction or transmit sounds to the same direction. The first accommodating chamber and the second accommodating chamber may respectively accommodate different components, and the specific contents will be described below.

[0051] In some embodiments, the acoustic device 01 may include a seal 40 that can seal the assembly gaps between components in the accommodating cavity 110 to improve the waterproofness of the acoustic device 01. Figure 2 shows a schematic diagram of the accommodating cavity 110 structure of the acoustic device 01 according to some embodiments of this specification.

[0052] As shown in Figure 2, waterproof assembly 20 is placed within and sealed to accommodating cavity 110, while covering first sound hole 120 to prevent liquid from passing through waterproof assembly 20 and contacting specific components of acoustic assembly 30. Acoustic assembly 30 is positioned on a side of waterproof assembly 20 away from first sound hole 120 and is sealed to waterproof assembly 20.

[0053] In some embodiments, the waterproof assembly 20 may include a waterproof membrane 210 and at least one buffer member 220. The waterproof membrane 210 may be made of a waterproof, breathable material having an equivalent microporous structure. This waterproof, breathable material is characterized by allowing air molecules to pass through the equivalent microporous structure, while water molecules cannot. When the acoustic device 01 is operating, sound waves propagate to the interface of the waterproof membrane 210. Due to the larger spacing between molecules and the smaller size of the molecules, air molecules can freely enter and exit the equivalent microporous structure of the waterproof membrane 210. For example, ambient sound waves can pass through the waterproof membrane 210 and be collected by a microphone, or sound waves generated by a speaker can pass through the waterproof membrane 210 and reach the exterior of the acoustic device 01.

[0054] The buffer member 220 may have a central hole 221 formed therein and abut against the edge of the waterproof membrane 210. In other words, the buffer member 220 is located on at least one side of the waterproof membrane 210 and is connected to the waterproof membrane 210. The buffer member 220 abuts against the edge of the waterproof membrane 210. In other words, the waterproof membrane 210 completely covers the central hole 221 of the buffer member 220, so that liquid flowing through the central hole 221 is blocked by the waterproof membrane 210.

[0055] To distinguish the first sound hole 120 from the center hole 221, their diameters are indicated by dashed lines in FIG2 . In some embodiments, the center hole 221 and the opening of the first sound hole 120 on the inner wall of the housing 10 are not coaxial. In some embodiments, the center hole 221 and the opening of the first sound hole 120 on the inner wall of the housing 10 are coaxial. This allows the waterproof membrane 210 to evenly withstand the water pressure from the first sound hole 120, thereby reducing the risk of damage to the waterproof membrane 210 due to uneven water pressure, which could reduce or even render the waterproofing effectiveness of the waterproof assembly 20 ineffective. The center hole 221 can be shaped in any manner, such as circular, elliptical, square, or rectangular, and is not limited in this specification. In some embodiments, the shape of the center hole 221 can match that of the first sound hole 120, and the diameter of the first sound hole 120 can be smaller than or equal to the diameter of the center hole 221. This allows the waterproof membrane 210 to have a larger area to withstand water pressure, making it less susceptible to damage. In some embodiments, the diameter of the center hole 221 can be 0.8mm-1.8mm. While adapting to the accommodation space of the third accommodating cavity 112 and the diameter of the first sound hole 120, the center hole 221 can be enlarged to increase the area of ​​the second waterproof membrane 121 that can withstand water pressure. In some embodiments, the diameter of the first sound hole 120 can be 0.6mm-1.2mm. While not affecting the sound pickup of the acoustic device 01, the diameter can be reduced to reduce the possibility of liquid entering the interior of the housing 10. In some embodiments, the waterproof component 20 can have an adhesive surface, so that after the waterproof component 20 is placed in the accommodating cavity 110, the adhesive surface can adhere to the accommodating bottom wall 112 of the accommodating cavity 110, thereby achieving a sealed connection and securing the waterproof component 20. For example, the waterproof component 20 can have a first adhesive surface 221 and a second adhesive surface 222. The first adhesive surface 221 can adhere the waterproof component 20 to the accommodating cavity 110 after being subjected to external pressure. Among them, the external pressure can be provided by the gravity of the acoustic component 30, can be provided by the pressure jig pressing down the waterproof component 20, or can be provided by manual direct contact with the waterproof component 20. The second bonding surface 222 can make the waterproof component 20 and the acoustic component 30 sealed and bonded when they are in contact. Specifically, the waterproof component 20 can have two buffer members 220, which are distributed on both sides of the waterproof membrane 210. The two surfaces of the buffer member 220 facing the accommodating cavity 110 and the acoustic component 30 can be sticky. After the waterproof component 20 is placed in the accommodating cavity 110, the pressure jig applies a preset pressure to the waterproof component 20, so that the waterproof component 20 can be firmly bonded to the accommodating bottom wall 112. By setting the bonding surface, the waterproof component 20 is fixed in the accommodating cavity 110 by bonding, achieving a waterproof effect while ensuring the simplicity and convenience of the operation process.

[0056] Furthermore, the buffer 220 can also be elastic. The buffer 220 can evenly distribute the high-speed physical pressure (impact energy) exerted on the waterproof assembly. Furthermore, during the installation of the waterproof assembly 20, the buffer 220 can protect the waterproof membrane 210 from wrinkling due to significant impact, thereby affecting its waterproof and acoustic performance. In some embodiments, the buffer 220 can be made of foam glue, elastic acrylic glue, or a combination of foam matrix and elastic acrylic glue.

[0057] In order to reduce the difficulty of assembling the waterproof component 20, the acoustic component 30 and the accommodating cavity 110, the size of the waterproof component 20 and the size of the acoustic component 30 can be slightly smaller than the size of the accommodating cavity 110. As shown in Figure 2, the acoustic component 30 can form a first gap I1 with the accommodating cavity 110, and the waterproof component 20 can form a second gap I2 with the accommodating cavity 110.

[0058] In some embodiments, the waterproof assembly 20 may further include a gauze 230. As shown in Figure 2, the gauze 230 may be positioned on the side of the waterproof assembly 20 away from the first sound hole 120. When the waterproof membrane 210 encounters high water pressure, it may deform. In this case, the gauze 230 can act as a support or barrier behind the waterproof membrane 210, preventing excessive deformation of the waterproof membrane 210, which could in turn alter its acoustic properties and enhance its waterproofing capabilities. In this case, the second bonding surface 222 can be bonded to the gauze 230. The side of the gauze 230 facing the acoustic assembly 20 can be bonded to the acoustic assembly 20. In some embodiments, the gauze 230 can also be positioned on the side of the waterproof assembly 20 closer to the first sound hole 120. When a user wears the headphones for underwater activities, water entering the acoustic device through the first sound hole 120 may first flow through the gauze 230. The gauze 230 can disperse the water flow through the mesh, so that the impact force on the waterproof membrane 210 can be more dispersed, so that the force on the waterproof membrane 210 is relatively small, and the waterproof membrane 210 is not easily deformed, thereby increasing the waterproof ability of the waterproof membrane 210 (waterproof component 20).

[0059] In some embodiments, when the acoustic component 30 is placed above the waterproof component 20, the at least one buffer 220 undergoes a target deformation under the force of the acoustic component 30. Since the buffer 220 is elastic and can rebound, the target deformation is less than 50%. The deformation degree of the buffer 220 can be calculated as (original thickness - thickness after compression) / original thickness x 100%.

[0060] For example, the original thickness of the buffer member 220 is first recorded. When the waterproof assembly 20 is pressed downward, the thickness of the buffer member 220 after compression is recorded, thereby obtaining the degree of deformation of the buffer member 220.

[0061] The acoustic assembly 30 may include an acoustic sensor 310 and a flexible printed circuit (FPC) 320. The FPC is flexible and bendable. By bending the FPC, the space occupied by the housing 10 can be reduced.

[0062] The acoustic sensor 310 may include a third sound hole 311. In some embodiments, the acoustic sensor 310 may include at least one microphone, which includes the third sound hole 311, for receiving ambient sound transmitted through the waterproof component 20. In some embodiments, the acoustic sensor 310 may include at least one speaker, which includes the third sound hole 311. When in operation, the speaker may emit a target sound. The target sound may be output from the third sound hole 311 and then transmitted out of the acoustic device 01 through the waterproof component 20. As previously described, the waterproof component 20 covers the first sound hole 120 to prevent water from passing through the waterproof component 20 and contacting specific components in the acoustic component 30. Specifically, the waterproof component 20 prevents water from passing through the waterproof component 20 and contacting the acoustic sensor 310, and prevents water from entering the acoustic sensor 310 through the third sound hole 311.

[0063] The flexible circuit board 320 can be mechanically connected to the acoustic sensor 310. The mechanical connection can be bonding, SMT patching, manual soldering, seam connection, riveting, etc. For example, the acoustic sensor 310 can be fixed to the flexible circuit board 320 by soldering. The flexible circuit board 320 can be located between the acoustic sensor 310 and the waterproof component 20. As previously described, the acoustic component 30 can be connected to the waterproof component 20 by bonding to the second bonding surface 222 of the buffer 220. Specifically, the flexible circuit board 320 can be bonded to the second bonding surface 222 of the buffer 220 to connect the acoustic component 30 to the waterproof component 20. In some embodiments, pressure can be further applied to the acoustic component 30 so that the flexible circuit board 320 can be more firmly bonded to the second bonding surface 220.

[0064] In some embodiments, the flexible circuit board 320 can also be partially or entirely reinforced. In other words, the thickness or hardness of the flexible circuit board 310 can be increased locally, while maintaining the flatness of the flexible circuit board 320. For example, a steel plate or PI (Polymide) material can be used as a reinforcing plate 330 to reinforce the FPC. PI is an engineering plastic with excellent mechanical properties, characterized by light weight, thinness, and good flexibility. As shown in Figure 2, the reinforcing plate 330 can be located between the flexible circuit board 320 and the waterproof component 20. The flexible circuit board 320 can include a second sound hole 321. The second sound hole 321 and the third sound hole 311 can be coaxial to minimize the path for sound to enter or exit the acoustic sensor 310, ensuring that the acoustic sensor 310 has good acoustic performance. In some embodiments, the first opening of the first sound hole 120 on the inner wall of the housing 10 can be coaxial with the second sound hole 321 and the third sound hole 311 to ensure that the path for sound to enter or exit the acoustic device 01 is the shortest, ensuring that the acoustic device 01 has good acoustic performance. In some embodiments, the first opening of the first sound hole 120 on the inner wall of the housing 10 is not coaxial with the second sound hole 321 and the third sound hole 311, thereby allowing the first sound hole 120 to be opened in a wider range of locations on the housing 10.

[0065] In some embodiments, the diameter of the third sound hole 311 may be no larger than that of the second sound hole 321, and the diameter of the second sound hole 321 may be smaller than that of the first sound hole 120. Designing the first sound hole 120 to have a larger diameter can increase sound pressure. For example, the diameter of the first sound hole 120 may be 0.6 mm to 1.2 mm, the diameter of the second sound hole 321 may be 0.5 mm, and the diameter of the third sound hole 311 may be 0.25 mm.

[0066] The height of the accommodating sidewall 111 can be higher than the upper surface of the flexible circuit board 320, thereby forming a first accommodating space 13 for accommodating the seal 40, as shown in Figure 2. In some embodiments, the height of the accommodating sidewall 111 of the accommodating cavity 110 can also be higher than the upper surface of the acoustic sensor 310, thereby forming more space for accommodating the seal 40.

[0067] The acoustic device 01 may include multiple acoustic sensors 310 to achieve more functions. For example, the acoustic sensor 310 may include two acoustic sensors 310, specifically, a first acoustic sensor 311 and a second acoustic sensor 312. Figure 3 shows a schematic diagram of the structure of two acoustic sensors 310 provided according to some embodiments of this specification. For example, when the acoustic sensor 310 is a microphone, two microphones are provided in the headset to achieve a noise reduction effect. One microphone can be a microphone used by ordinary users during calls to collect human voices. The other microphone can have a noise collection function to facilitate the collection of noise from the surrounding environment. As mentioned above, the first accommodating chamber 113 and the second accommodating chamber 114 can respectively accommodate different components. Specifically, the first accommodating chamber 113 can accommodate the first acoustic sensor 311, and the second accommodating chamber 114 can accommodate the second acoustic sensor 312. The specific structure of the first acoustic sensor 311 and the second acoustic sensor 312 can be the same as the structure described above. The process of installing the first acoustic sensor 311 and the second acoustic sensor 312 in the corresponding accommodating cavity 110 may also be the same as the process described above, which will not be repeated here.

[0068] The first acoustic sensor 311 and the second acoustic sensor 312 may share a flexible circuit board 320 . That is, both the first acoustic sensor 311 and the second acoustic sensor 312 are mechanically connected to the flexible circuit board 320 .

[0069] In some embodiments, the first acoustic sensor 311 and the second acoustic sensor 312 are mechanically connected to different flexible printed circuit boards 320, respectively. The two flexible printed circuit boards 320 of the two acoustic sensors 310 are then mechanically connected, thereby connecting the two acoustic sensors 310. The two flexible printed circuit boards 320 of the two acoustic sensors 310 can be connected via another connecting circuit board. For example, they can be connected via a printed circuit board (PCB). PCBs are not easily bent and have a certain degree of rigidity, thus providing good support for the two acoustic sensors 310. For another example, the two flexible printed circuit boards 320 of the two acoustic sensors 310 can also be electrically connected via board-to-board connectors (BTB connectors). For another example, the two flexible printed circuit boards 320 of the two acoustic sensors 310 can also be connected via another flexible printed circuit board (FPC). This specification does not limit the connection method between the two acoustic sensors 310.

[0070] In some embodiments, first acoustic sensor 311 and first acoustic sensor 312 can be connected using a flexible circuit board 320. As previously described, flexible circuit board 320 can be a common circuit board for two acoustic sensors 310, as shown in FIG3 , or the two flexible circuit boards 320 of two acoustic sensors 310 can be connected via another flexible circuit board.

[0071] As previously mentioned, the height of the accommodating sidewall 111 can be higher than the upper surface of the flexible printed circuit board 320. Therefore, when the acoustic device 01 includes multiple acoustic sensors 310, to connect these multiple acoustic sensors 310, the flexible printed circuit board 320 needs to bend from within the accommodating cavity 110, extend out of the accommodating cavity 110, pass over the accommodating sidewall 111, and then bend until it contacts the bottom wall 140 of the housing, thereby reducing the space occupied by the housing 10. To reduce the degree of bending of the flexible printed circuit board 320 when passing over the accommodating cavity 110 and prevent damage to the flexible printed circuit board due to excessive bending at the accommodating sidewall 111, a target section 111-A can be provided on the accommodating sidewall 111. The flexible printed circuit board 320 can pass over the accommodating sidewall 111 from the target section 111-A. The target section 111-A is described using the first accommodating cavity 113 as an example; the second accommodating cavity 114 can also have a similar design. FIG4 shows a structural diagram of the first accommodating cavity 113 provided according to this specification.

[0072] The target section 111 -A may have a flatter design compared to other portions of the accommodating sidewall 111 , thereby reducing the degree of bending of the flexible circuit board 320 in the sidewall section of the accommodating sidewall 111 and thereby increasing the life of the flexible circuit board 320 .

[0073] For example, if the corners of the other portions of the receiving sidewall 111 are sharp right angles, the target segment 111-A may be designed with rounded corners. For another example, if the corners of the other portions of the receiving sidewall 111 are rounded at a shallow angle, the target segment 111-A may be designed with a shallower angle. For another example, if the height difference between the other portions of the receiving sidewall 111 and the inner wall of the housing 10 is high, the target segment 111-A may be designed with a shallower height difference and a slope between the target segment 111-A and the inner wall of the housing 10 to support the flexible printed circuit board 320. As shown in FIG. 4 , in some embodiments, the target segment 111-A may include a guide opening 111-A1 and an inclined guide surface 111-A2 defined in the receiving sidewall 111. The upper surface of the flexible printed circuit board 320 may be flush with the upper surface of the guide opening 111-A1, thereby eliminating the need for the flexible printed circuit board 320 to bend in order to pass over the receiving sidewall 111. The guide opening 111-A1 can be connected to the inner wall of the housing 10 via an inclined guide surface 111-A2. Because there is a certain height difference between the guide opening and the inner wall of the housing 10, the provision of the guide surface 111-A2 can support the flexible circuit board 310, prevent the flexible circuit board 320 from becoming suspended, and reduce the risk of damage to the flexible circuit board 320. In some embodiments, the degree of bending of the flexible circuit board 320 in the sidewall section of the receiving sidewall 111 can be measured by the bending angle of the flexible circuit board 320. The smaller the bending angle, the lower the degree of bending. For example, an acute bending angle results in a lower degree of bending than a right angle. Without the guide surface 111-A2, the flexible circuit board 320 would need to bend at a right angle along the receiving sidewall 111. As shown in Figure 4, the provision of the inclined guide surface 111-A2 prevents the flexible circuit board 320 from bending downward at a sharp angle. The support provided by guide surface 111-A2 allows the flexible printed circuit board 320 to bend at a sharp and shallow angle. In some embodiments, the target segment 111-A can also be rounded, compared to the right-angle design of other segments. This prevents the flexible printed circuit board 320 from bending directly when passing through the receiving side wall 111, thereby improving the service life of the flexible printed circuit board 320.

[0074] FIG5 is a schematic diagram showing the sealing position of the seal 40 provided according to some embodiments of the present specification. The seal 40 is shown by shading. As shown in FIG5 , the seal 40 seals the first gap I1 mentioned above. Since the first gap I1 is formed between the acoustic component 30 and the accommodating cavity 110, sealing the first gap I1 can not only fix the acoustic component 30, but also prevent the liquid from passing through the first gap I1 into the internal space of the shell 10. The seal 40 can be obtained by providing a fluid sealing material to the first gap I1 and then solidifying the fluid sealing material. It is worth noting that FIG5 is only a schematic diagram of the position of the cured sealing material. The fluid sealing material can completely fill all gaps by flowing, so the components / structures connected by the seal 40 are sealed. The fluid sealing material can be a sealant. For example, the sealant can be an ultraviolet ray glue (UV glue for short), silicone, hot melt glue, etc.

[0075] The seal 40 further seals the second gap I2. Since the second gap I2 is formed between the waterproof assembly 20 and the accommodating cavity 110 and is closer to the water inlet than the first gap I1, sealing the second gap I2 prevents liquid from entering the first gap I1 through the second gap I2 and, thus, entering the interior of the housing 10. In some embodiments, when the sealing material is UV glue, the UV glue can be allowed to flow to the second gap I2 and then solidify to seal the second gap I2.

[0076] As previously mentioned, the height of the accommodating sidewall 111 can be higher than the upper surface of the flexible circuit board 320, thereby forming a first accommodation space for accommodating the sealing member 40. In some embodiments, when the sealing material is UV adhesive, the UV adhesive can be applied to the first accommodation space to seal the first accommodation space and further prevent water from entering the interior of the housing 10. In other words, the upper surface of the flexible circuit board 320 and the upper surface of the acoustic sensor 310 can both be coated with UV adhesive, thereby ensuring a more secure fixation and a tighter seal between each component and the housing 10.

[0077] In summary, this specification provides a waterproof acoustic device 01. By installing a waterproof component 20 at the first sound hole 120 of the acoustic device 01, liquid is prevented from entering the third sound hole 311 of the acoustic sensor 310, thereby preventing the acoustic performance of the acoustic sensor 310. Furthermore, a seal 40 seals the first gap between the acoustic component 30 and the accommodating cavity 110, preventing liquid from flowing into the housing 10. This provides waterproof protection for other components and circuitry within the housing 10. This design enhances the waterproof capability of the acoustic device 01 and ensures its acoustic performance.

[0078] The foregoing description of this specification describes specific embodiments. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims can be performed in an order different from that described in the embodiments and still achieve the desired results. Furthermore, the processes depicted in the accompanying drawings do not necessarily require the particular order or sequential order shown to achieve the desired results. In certain embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0079] In summary, after reading this detailed disclosure, those skilled in the art will appreciate that the foregoing detailed disclosure may be presented by way of example only and may not be limiting. Although not expressly stated herein, those skilled in the art will understand that this specification encompasses various reasonable changes, improvements, and modifications to the embodiments. Such changes, improvements, and modifications are intended to be suggested by this specification and are within the spirit and scope of the exemplary embodiments of this specification.

[0080] Furthermore, certain terms in this specification have been used to describe embodiments of this specification. For example, “one embodiment,” “an embodiment,” and / or “some embodiments” mean that a particular feature, structure, or characteristic described in connection with that embodiment may be included in at least one embodiment of this specification. Therefore, it is emphasized and should be understood that two or more references to “an embodiment,” “one embodiment,” or “an alternative embodiment” in various parts of this specification do not necessarily refer to the same embodiment. Furthermore, particular features, structures, or characteristics may be appropriately combined in one or more embodiments of this specification.

[0081] It should be understood that in the foregoing descriptions of the embodiments of this specification, to facilitate understanding of a feature and to simplify this specification, various features are combined in a single embodiment, figure, or description thereof. However, this does not necessarily mean that these features are combined. When reading this specification, those skilled in the art may extract some of the features and understand them as separate embodiments. In other words, the embodiments of this specification can also be understood as the integration of multiple sub-embodiments. This also applies when each sub-embodiment contains fewer than all the features of a single previously disclosed embodiment.

[0082] Each patent, patent application, patent application publication, and other materials, such as articles, books, specifications, publications, documents, articles, etc., cited herein is hereby incorporated by reference in its entirety for all purposes, except for any prosecution document history related thereto, any equivalent that may be inconsistent or conflicting with this document, or any equivalent prosecution document history that may have a limiting effect on the broadest scope of the claims now or hereafter 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 incorporated material and the terminology, description, definition, and / or use associated with this document, the terminology in this document shall control.

[0083] Finally, it should be understood that the embodiments of the application disclosed herein are illustrative of the principles of the embodiments of this specification. Other modified embodiments are also within the scope of this specification. Therefore, the embodiments disclosed in this specification are merely examples and not limitations. Those skilled in the art can adopt alternative configurations based on the embodiments in this specification to implement the application in this specification. Therefore, the embodiments of this specification are not limited to the embodiments precisely described in the application.

Claims

1. An acoustic device, characterized in that, Comprising: A housing including a receiving cavity, and a first sound passage hole is formed in the receiving cavity; A waterproof component disposed in the receiving cavity, sealingly connected to the receiving cavity and covering the first sound passage hole to prevent liquid from passing through the waterproof component and contacting the acoustic sensor; An acoustic component including the acoustic sensor, the acoustic component being disposed on a side of the waterproof component away from the sound passage hole and sealingly connected to the waterproof component, and a first gap being formed between the acoustic component and the receiving cavity; And A seal for sealing the first gap to fix the acoustic component and prevent the liquid from entering the inner space of the housing through the first gap.

2. The acoustic device according to claim 1, wherein The waterproof component has a first bonding surface and a second bonding surface; The first bonding surface has adhesiveness to bond the waterproof component in the receiving cavity after being subjected to an external pressure; And The second bonding surface has adhesiveness to bond the waterproof component and the acoustic component when contacting the acoustic component.

3. The acoustic device according to claim 1, characterized in that A second gap is formed between the waterproof component and the receiving cavity, and the seal further seals the second gap to prevent the liquid from reaching the first gap through the second gap.

4. The acoustic device according to claim 1, characterized in that, The waterproof component includes: A waterproof film; and At least one buffer member having a central hole, the at least one buffer member abutting against an edge region of the waterproof film, and the aperture of the first sound passage hole being less than or equal to the aperture of the central hole, wherein the at least one buffer member undergoes a target deformation under the action of the acoustic component, and the target deformation is less than 50%.

5. The acoustic device according to claim 3 or 4, characterized in that, The acoustic sensor includes at least one microphone for receiving ambient sound passing through the waterproof component; or The acoustic sensor includes at least one speaker for emitting a target sound during operation, and the target sound passes through the waterproof component and exits the acoustic device.

6. The acoustic device according to claim 3 or 4, characterized in that, The acoustic component further includes a flexible circuit board located between the acoustic sensor and the waterproof component and mechanically connected to the acoustic sensor; The flexible circuit board includes a second sound passage hole, the acoustic sensor includes a third sound passage hole, and The second sound passage hole and the third sound passage hole are coaxial.

7. The acoustic device according to claim 6, wherein The aperture of the third sound passage hole is not greater than the aperture of the second sound passage hole; and The aperture of the second sound passage hole is less than the aperture of the first sound passage hole.

8. The acoustic device according to claim 3 or 4, characterized in that, The waterproof component further includes a mesh disposed on a side of the waterproof component close to the first sound passage hole.

9. The acoustic device according to claim 3 or 4, characterized in that, The waterproof component further includes a mesh disposed on a side of the waterproof component away from the first sound passage hole.

10. The acoustic device according to claim 1, characterized in that, The inner wall of the housing forms a receiving sidewall of the receiving cavity; The acoustic component further includes a flexible circuit board mechanically connected to the acoustic sensor; and The height of the receiving sidewall is higher than the upper surface of the flexible circuit board, thereby forming a first receiving space for receiving the seal.

11. The acoustic device according to claim 10, wherein, The flexible circuit board crosses the receiving sidewall from a target section of the receiving sidewall, The target section of the accommodating sidewall has a gentler design compared to other parts of the accommodating sidewall to reduce the bending degree of the flexible circuit board at the accommodating sidewall section.

12. The acoustic device according to claim 11, wherein The target section includes a guiding opening formed in the accommodating sidewall and an inclined guiding surface, and the guiding opening is connected to the inner wall of the housing through the guiding surface to support the flexible circuit board.

13. The acoustic device according to claim 11 or 12, characterized in that, The gentler design includes at least one of a rounded corner design or a ramp design.

14. The acoustic device according to any one of claims 1-10, characterized in that, The acoustic sensor includes a first acoustic sensor and a second acoustic sensor; The inner wall of the housing includes a housing bottom wall and a housing sidewall; and The accommodating cavity includes: a first accommodating cavity provided in the housing bottom wall to accommodate the first acoustic sensor; and a second accommodating cavity provided in the housing sidewall to accommodate the second acoustic sensor, wherein the first acoustic sensor and the second acoustic sensor are connected by the flexible circuit board.

15. The acoustic device according to claim 1, characterized in that, The aperture of the first sound passage hole on the inner wall of the housing is smaller than the aperture of the first sound passage hole on the outer wall of the housing.

16. The acoustic device according to any one of claims 1-10, wherein The waterproof component is sealingly connected to the accommodating bottom wall of the accommodating cavity, and the central axis of the first sound passage hole is inclined with respect to the accommodating bottom wall.

17. 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 it.

18. The acoustic device according to claim 17, wherein The fluid sealing material is a sealant.

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