Audio devices

Abstract

This application provides an acoustic device. The acoustic device includes a housing, a waterproof assembly, an acoustic assembly, and a sealing member. The housing includes a housing cavity in which a first sound hole is formed, the waterproof assembly is placed inside the housing cavity and sealed to the housing cavity, covering the first sound hole to prevent liquid from passing through the waterproof assembly and coming into contact with the acoustic sensor, the acoustic assembly includes an acoustic sensor which is placed in the housing cavity away from the sound hole of the waterproof assembly and sealed to the waterproof assembly, forming a first gap between the acoustic assembly and the housing cavity, the sealing member sealing the first gap to secure the acoustic assembly and prevent liquid from passing through the first gap and coming into the internal space of the housing. The waterproof assembly is placed in the first sound hole and the first gap is sealed with the sealing member to prevent liquid from flowing into the housing or coming into contact with the acoustic sensor, thereby improving the waterproof capability of the acoustic device.

Description

Technical Field

[0004] , , ,

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

Background Art

[0002] In the housing of an acoustic device, usually, sound holes are provided to allow 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 applied in the wild or a humid environment, liquids such as water are likely to enter the acoustic device through the sound holes of the housing. For example, the microphone of a wireless earphone must leave a sound hole in order to pick up environmental sounds and ensure call quality, and thereby transmit sound by air conduction. When the user wears the wireless earphone and moves in water (for example, swimming), water enters the earphone from the sound hole. When water enters the wireless earphone, it may affect the normal use function of its internal components. For example, it may cause a failure of the microphone or speaker, and further cause a short circuit in the circuit of the motherboard or some components, making it impossible for the user to use it normally.

[0003] Therefore, the conventional acoustic device needs to take certain measures to improve its waterproof protection performance, and in particular, the waterproof protection for assemblies such as microphones and speakers should be strengthened.

Summary of the Invention

[0005] In some embodiments, the waterproof assembly has a first adhesive surface and a second adhesive surface, the first adhesive surface being adhesive, thereby bonding the waterproof assembly to the housing cavity after being subjected to external pressure, and the second adhesive surface being adhesive, thereby bonding the waterproof assembly to the acoustic assembly when it comes into contact with the acoustic assembly.

[0006] In some embodiments, a second gap is formed between the waterproof assembly and the housing cavity, and the sealing member further seals the second gap to prevent the liquid from passing through the second gap to reach the first gap.

[0007] In some embodiments, the waterproof assembly includes a waterproof membrane and at least one buffer member, the at least one buffer member having a central hole, the at least one buffer member abutting against the edge region of the waterproof membrane, the diameter of the first sound-permeable hole being less than or equal to the diameter of the central hole, the at least one buffer member undergoing a target deformation under the force applied by the acoustic assembly, and the target deformation being less than 50%.

[0008] In some embodiments, the acoustic sensor includes at least one microphone that receives ambient sound passing through the waterproof assembly, or the acoustic sensor includes at least one speaker that emits a target sound when in operation, the target sound being transmitted from the acoustic device through the waterproof assembly.

[0009] In some embodiments, the acoustic assembly further includes a flexible circuit board, which is located between the acoustic sensor and the waterproof assembly 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 and third sound holes are coaxial.

[0010] In some embodiments, the diameter of the third tone hole is less than or equal to the diameter of the second tone hole, and the diameter of the second tone hole is smaller than the diameter of the first tone hole.

[0011] In some embodiments, the waterproof assembly further includes gauze, which is positioned on the side of the waterproof assembly adjacent to the first sound-perforating hole.

[0012] In some embodiments, the waterproof assembly further includes gauze, which is positioned on the side of the waterproof assembly away from the first sound-perforating hole.

[0013] In some embodiments, the inner wall of the housing forms a housing side wall of the housing cavity, the acoustic assembly further includes a flexible circuit board, the flexible circuit board is mechanically connected to the acoustic sensor, and the height of the housing side wall is greater than the upper surface of the flexible circuit board, thereby forming a first housing space for housing the sealing member.

[0014] In some embodiments, the flexible circuit board extends beyond the housing sidewall beyond the target segment of the housing sidewall, and the target segment of the housing sidewall has a flatter design compared to other parts of the housing sidewall, thereby reducing the degree of bending of the flexible circuit board at the housing sidewall.

[0015] In some embodiments, the target segment includes a guide opening and an inclined guide surface formed in the housing side wall, the guide opening and the inner wall of the housing are connected by the guide surface to support the flexible circuit board.

[0016] In some embodiments, the flatter design includes at least one of a chamfered design or a beveled design.

[0017] In some embodiments, 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 side wall, the housing cavity includes a first housing cavity installed in the housing bottom wall and housing the first acoustic sensor, and a second housing cavity installed in the housing side wall and housing the second acoustic sensor, and the first acoustic sensor and the second acoustic sensor are connected by the flexible circuit board.

[0018] In some embodiments, the diameter of the first sound hole in the inner wall of the housing is smaller than the diameter of the first sound hole in the outer wall of the housing.

[0019] In some embodiments, the waterproof assembly is sealed to the housing bottom wall of the housing cavity, and the central axis of the first sound hole is installed at an inclination with respect to the housing bottom wall.

[0020] In some embodiments, the sealing member is obtained by filling the first gap with a fluid sealing material and allowing it to harden.

[0021] In some embodiments, the fluid sealing material is a sealant.

[0022] As can be seen from the above technical means, the acoustic device according to the present disclosure attaches a waterproof assembly to the first sound passage hole, so that liquid does not enter the acoustic sensor, thereby not affecting the acoustic performance of the acoustic sensor. Moreover, the first gap between the acoustic assembly and the accommodating cavity is sealed by the sealing member, so that liquid does not flow into the interior of the housing, and waterproof protection is provided for other members and circuits in the housing. With the above design, the waterproof ability of the acoustic device is improved, and the acoustic performance of the acoustic device is guaranteed.

[0023] Other functions of the acoustic device according to the present disclosure are partially listed in the following description. The inventive step of the acoustic device according to the present disclosure can be fully interpreted by practicing or using the methods, devices and combinations described in the following specific examples.

[0024] To more clearly explain the technical means in the embodiments of the present disclosure, the drawings necessary for the description of the embodiments are briefly introduced below. Obviously, the drawings in the following description are only part of the embodiments of the present disclosure, and those skilled in the art can also obtain other drawings based on these drawings without creative effort.

Brief Description of the Drawings

[0025] [Figure 1A] It is a configuration diagram of an acoustic device according to some embodiments of the present disclosure. [Figure 1B] It is a cross-sectional view taken along the line A-A of the acoustic device shown in FIG. 1A of the present disclosure. [Figure 2] It is a schematic diagram of a partial structure of an acoustic device according to some embodiments of the present disclosure. [Figure 3] It is a schematic configuration diagram of two acoustic sensors according to some embodiments of the present disclosure. [Figure 4] It is a configuration diagram of a first accommodating cavity according to some embodiments of the present disclosure. [Figure 5]Schematic diagram of the sealing position of the sealing member according to some embodiments of the present disclosure.

Embodiments for Carrying out the Invention

[0026] In order to enable those skilled in the art to implement and use the content of the present disclosure, specific application scenarios and requirements of the present disclosure will be described below. For those skilled in the art, various partial modifications to the disclosed embodiments are obvious and can apply the general principles defined in the present disclosure to other embodiments and applications without departing from the spirit and scope of the present disclosure. Therefore, the present disclosure is not limited to the disclosed embodiments and should be understood in the broadest scope consistent with the claims.

[0027] The terms used in the present disclosure are only for explaining specific exemplary embodiments and are not limiting. For example, unless the context clearly indicates otherwise, the singular forms "a", "one" and "the" used in the present disclosure may include the plural forms. When used in the present disclosure, the terms "comprising", "including" and / or "containing" mean the presence of related integers, steps, operations, elements and / or assemblies, but do not exclude the presence of one or more other features, integers, steps, operations, elements, assemblies and / or groups, or the addition of other features, integers, steps, operations, elements, assemblies and / or groups to the system / method.

[0028] In the present application, the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "vertical", "horizontal", "lateral", "longitudinal" is based on the orientation or positional relationship shown in the drawings. These terms are mainly for better explaining the present application and its embodiments, and are not for limiting that the indicated device, element or component must have a specific orientation or be configured and operated in a specific orientation.

[0029] Furthermore, some of the above terms may be used to express meanings other than those related to direction or position. For example, the term "above" may, in some cases, be used to express a subordinate or connecting relationship. A person skilled in the art will be able to understand the specific meaning of these terms in this application depending on the specific circumstances.

[0030] Furthermore, the terms "attach," "install," "provide," "connect," and "link" should be understood in a broad sense. For example, they may be fixed connections, removable connections, or integral structures; they may be mechanical or electrical connections; they may be direct connections or indirect connections via an intermediate medium; or they may be internal communication between two devices, elements, or components. Those skilled in the art will be able to understand the specific meaning of the above terms in this application depending on the specific circumstances.

[0031] In this disclosure, "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. In other words, X may include only one of A, B, and C, or it may include any combination of A, B, and C and other possible contents / elements simultaneously. The above combination of A, B, and C may be A, B, C, AB, AC, BC, or ABC.

[0032] In this disclosure, “or” and “and / or” describe a relationship between related subjects and represent non-exclusive inclusion. For example, each of “A and / or B” and “A or B” may include the existence of only “A”, the existence of only “B”, and the existence of both “A” and “B”, and “A” and “B” may be singular or plural. Also, each of “A, B and / or C” and “A, B or C” may include the existence of only “A”, the existence of only “B”, the existence of only “C”, the existence of both “A” and “B”, the existence of both “A” and “C”, the existence of both “B” and “C”, and the existence of all “A”, “B”, and “C”, and “A”, “B”, and “C” may be singular or plural.

[0033] In this disclosure, “multiple” means two or more.

[0034] In this disclosure, unless explicitly stated otherwise, the relationships between structures may be direct or indirect. For example, if it states "A and B are connected," unless explicitly stated that A and B are directly connected, it should be understood that A may be directly connected to B or indirectly connected to B. Similarly, if it states "A is above B," unless explicitly stated that A is directly above B (A and B are adjacent and A is above B), it should be understood that A may be directly above B or indirectly above B (another element is between A and B and A is above B). By analogy,

[0035] Considering the following descriptions, these and other features of this disclosure, the operation and function of the related elements of the structure, and the economics of assembly and manufacture of the components can be significantly improved. All of these drawings, with reference to the drawings, constitute part of this disclosure. However, it should be clearly understood that the drawings are for illustrative and illustrative purposes only and are not intended to limit the scope of this disclosure. It should also be understood that the drawings are not drawn to actual size.

[0036] The present application will be described in detail below with reference to specific examples.

[0037] The housing of an acoustic device typically has sound vents that allow 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, wireless earphones with a calling function receive sound transmitted through the air, leaving sound vents for the microphone to pick up sound, in order to ensure call quality. After the acoustic device has been applied to an outdoor or humid environment, it is necessary to apply a liquid-proof treatment to the sound vents of the acoustic device to prevent liquids such as water from entering the acoustic device and to ensure that the acoustic device can still operate normally. This disclosure provides an acoustic device that improves the liquid-proof capability of the acoustic device by applying a liquid-proof treatment to the sound vents. The liquids in this disclosure may include, but are not limited to, water, oil, sweat, etc., and for convenience of explanation, water will be used as an example below.

[0038] Figure 1A is a configuration diagram of an acoustic device 01 according to some embodiments of the present disclosure. Figure 1B is a cross-sectional view AA of the acoustic device 01 shown in Figure 1A of the present disclosure. The acoustic device 01 shown in Figure 1A is a (wireless) earphone, and the following description will use the acoustic device 01 as an example, and the (wireless) earphone may be a bone conduction earphone, an air conduction earphone, or a bone conduction and air conduction earphone. The acoustic device 01 may also be other acoustic devices such as a mobile phone, computer, or recording device. The acoustic device 01 may include a housing 10, a waterproof assembly 20, an acoustic assembly 30, and a sealing member 40 (not shown in Figures 1A and 1B).

[0039] As shown in Figure 1B, the housing 10 may be a mounting assembly for the acoustic device 01, and other components of the acoustic device 01 (e.g., waterproof assembly 20, acoustic assembly 30, etc.) may be mounted on the housing 10 as a carrier. The housing 10 may include a housing bottom wall 130 and housing side walls 140. The housing bottom wall 130 and housing side walls 140 together enclose an internal space, and other components of the acoustic device 01 may be installed within this internal space. The shape of the housing 10 may be any shape, for example, a racetrack shape (rounded rectangle) or a circle. In some embodiments, if the acoustic device 01 is a wireless earphone, the housing 10 may be shaped to conform to the contour of a human ear so that the wireless earphone fits more securely to the user's ear. The material of the housing 10 may be any material, for example, a metal material, a plastic material, a polymer material, etc. This disclosure does not limit the shape and material of the housing 10.

[0040] The housing 10 may include a housing cavity 110, which is used to house other components, such as an acoustic assembly 30. In some embodiments, the inner walls of the housing 10 may form housing side walls 111 and housing bottom walls 112 of the housing cavity 110. For example, the housing bottom wall of the housing 10 may form a housing bottom wall 112 and housing side walls 111, with the housing bottom wall forming part of the housing bottom wall 112 and housing side walls 111, and the housing side walls forming other parts of the housing side walls 111. In some embodiments, the housing cavity 110 may be a space surrounded by other components.

[0041] A first sound vent 120 may be formed in the housing cavity 110. For example, the first sound vent 120 may be formed in the housing bottom wall 112 of the housing cavity 110. In some embodiments, the diameter of the hole in the inner wall of the housing 10 for the first sound vent 120 may be smaller than the diameter of the hole in the outer wall of the housing 10 for the first sound vent 120, where the hole diameter is the diameter of the opening in the wall surface. In other words, the first sound vent 120 may have a trumpet shape, which is larger on the outside and smaller on the inside. By designing the first sound vent 120 in a trumpet shape, the user can easily clean foreign matter such as solids or liquids that enter the first sound vent 120, while also making the die-cutting process smoother during the manufacturing of the sound vent.

[0042] In some embodiments, the central axis of the first sound vent 120 may be installed at an inclination with respect to the housing bottom wall 112 to prevent water from entering the housing through the first sound vent 120. The central axis of the first sound vent 120 may be the connection line between the center of the first opening in the inner wall of the housing 10 and the center of the second opening in the outer wall of the housing 10. The angle at which the central axis of the first sound vent 120 is inclined with respect to the housing bottom wall 112 can be selected according to the design and processing needs of the product, provided that it does not affect the acoustic performance of the sound device 01. In some embodiments, the range of the inclination angle may be 65° to 80°, and if a certain degree of inclination is guaranteed, the processing difficulty of the first sound vent 120 is also reduced. In some embodiments, the range of the inclination angle may be 35° to 60°, and by ensuring that the inclination angle is within this range, the ability to prevent water from entering the housing through the first sound vent can be further improved. In some application scenarios, such as swimming, by installing the first sound vent 120 at an angle, water does not flow directly into the first sound vent 120 when the acoustic device 01 is subjected to dynamic water pressure, thereby improving the waterproofing capability of the acoustic device 01 under dynamic water pressure. The shape of the first sound vent 120 may be any shape such as a circle, ellipse, square, or rectangle, and this disclosure does not limit the shape of the first sound vent 120.

[0043] In some embodiments, the acoustic device 01 may include a plurality of housing cavities 110, each housing a plurality of components. For example, the housing cavities 110 may include a first housing cavity and a second housing cavity, the first housing cavity being installed in the housing bottom wall 130. The second housing cavity may be installed in the housing side wall 140 so that the sound holes in the different housing cavities can receive sound from different directions or transmit sound in different directions. In some embodiments, the first and second housing cavities may be installed in the housing bottom wall 130 or the housing side wall 140 to improve the ability of the sound holes to receive sound from the same direction or transmit sound in the same direction. The first and second housing cavities may each house different components, the specifics of which will be described later.

[0044] In some embodiments, the acoustic device 01 may have a sealing member 40, which can seal the assembly gaps of each component within the housing cavity 110 in order to improve the waterproofness of the acoustic device 01. Figure 2 is a schematic diagram of the structure of the housing cavity 110 of the acoustic device 01 according to some embodiments of the present disclosure.

[0045] As shown in Figure 2, the waterproof assembly 20 is positioned within the housing cavity 110 and is sealed to the housing cavity 110, and covers the first sound vent 120, thereby preventing liquid from passing through the waterproof assembly 20 and coming into contact with specific components within the acoustic assembly 30. The acoustic assembly 30 is positioned on the side of the waterproof assembly 20 away from the first sound vent 120 and is sealed to the waterproof assembly 20.

[0046] 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 and breathable material having an equivalent microporous structure, characterized in that air molecules can pass through the equivalent microporous structure, but water molecules cannot. When the acoustic device 01 is operating, when sound waves are transmitted to the interface of the waterproof membrane 210, air molecules can freely enter and exit the equivalent microporous structure of the waterproof membrane 210 because of the large intermolecular spacing and small size of the molecules. For example, sound waves of ambient noise may pass through the waterproof membrane 210 and be collected by a microphone, or sound waves generated from a speaker may pass through the waterproof membrane 210 and reach the outside of the acoustic device 01.

[0047] The buffer member 220 may have a central hole 221, and the buffer member 220 may 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, thereby blocking the liquid flowing through the central hole 221.

[0048] To distinguish between the first sound channel 120 and the central hole 221, the diameters of both holes are shown by dotted lines in Figure 2. In some embodiments, the central hole 221 is not coaxial with the opening of the first sound channel 120 in the inner wall of the housing 10. In some embodiments, the central hole 221 is coaxial with the opening of the first sound channel 120 in the inner wall of the housing 10, thereby allowing the waterproof membrane 210 to receive the water pressure of the water flowing in from the first sound channel 120 uniformly, preventing the waterproof membrane 210 from being damaged by uneven water pressure, which would reduce or eliminate the waterproofing effect of the waterproof assembly 20. The shape of the central hole 221 may be any shape, such as circular, elliptical, square, or rectangular, and this disclosure does not limit the shape of the central hole 221. In some embodiments, the shape of the central hole 221 may match the shape of the first sound hole 120, and the diameter of the first sound hole 120 may be less than or equal to the diameter of the central hole 221, thereby providing the waterproof membrane 210 with a large area that can withstand water pressure and making it less prone to damage. In some embodiments, the diameter of the central hole 221 may be 0.8 mm to 1.8 mm, matching the accommodation space of the third accommodation cavity 112 and the diameter of the first sound hole 120, while increasing the diameter of the central hole 221 to increase the area on which the second waterproof membrane 121 is subjected to water pressure. In some embodiments, the diameter of the first sound hole 120 may be 0.6 mm to 1.2 mm, not affecting the sound device 01's ability to pick up sound, while reducing the diameter of the hole reduces the possibility of liquid entering the inside of the housing 10. In some embodiments, the waterproof assembly 20 may have adhesive surfaces so that, after the waterproof assembly 20 is placed in the housing cavity 110, the adhesive surfaces are bonded to the housing bottom wall 112 of the housing cavity 110, thereby achieving a sealed connection and securing the waterproof assembly 20. For example, the waterproof assembly 20 may have a first adhesive surface 221 and a second adhesive surface 222. The first adhesive surface 221 can bond the waterproof assembly 20 into the housing cavity 110 after being subjected to external pressure. External pressure may be provided by gravity of the acoustic assembly 30, by pressing down on the waterproof assembly 20 with a pressure jig, or by artificially applying pressure by directly contacting the waterproof assembly 20.The second adhesive surface 222 can seal and bond the waterproof assembly 20 and the acoustic assembly 30 when they come into contact. Specifically, the waterproof assembly 20 may have two buffer members 220 distributed on both sides of the waterproof membrane 210. The two surfaces of the buffer members 220 facing the housing cavity 110 and the acoustic assembly 30 may be adhesive. After the waterproof assembly 20 is placed in the housing cavity 110, the waterproof assembly 20 can be firmly bonded to the housing bottom wall 112 by applying a predetermined pressure to the waterproof assembly 20 with a pressure jig. By setting the adhesive surface, the waterproof assembly 20 is fixed in the housing cavity 110 by adhesion, achieving a waterproof effect and ensuring simplicity and convenience in the operation process.

[0049] Furthermore, the cushioning member 220 may be elastic. The cushioning member 220 can uniformly distribute the high-speed physical pressure (impact energy) that the waterproof assembly is subjected to, and furthermore, during the installation process of the waterproof assembly 20, the cushioning member 220 can protect the waterproof membrane 210 from being subjected to large impacts that cause wrinkles and affect the waterproof and acoustic performance. In some embodiments, the cushioning member 220 may be a foam adhesive, an elastic acrylic adhesive, or a foam substrate + elastic acrylic adhesive.

[0050] To reduce the difficulty of assembling the waterproof assembly 20, the acoustic assembly 30, and the housing cavity 110, the dimensions of the waterproof assembly 20 and the acoustic assembly 30 may be slightly smaller than the dimensions of the housing cavity 110, and a first gap I1 may be formed between the acoustic assembly 30 and the housing cavity 110, as shown in Figure 2, and a second gap I2 may be formed between the waterproof assembly 20 and the housing cavity 110.

[0051] In some embodiments, the waterproof assembly 20 may further include gauze 230. As shown in Figure 2, the gauze 230 may be installed on the side of the waterproof assembly 20 away from the first sound vent 120. When the waterproof membrane 210 is subjected to high water pressure, it may deform. At this time, the gauze 230 provides support or shielding to the rear surface of the waterproof membrane 210, preventing excessive deformation of the waterproof membrane 210 and altering its acoustic performance, thereby improving the waterproofing capability of the waterproof membrane 210. In this case, the second adhesive surface 222 may be bonded to the gauze 230. The side of the gauze 230 facing the acoustic assembly 20 may be fixed to the acoustic assembly 20 by adhesive. In some embodiments, the gauze 230 may be installed on the side of the waterproof assembly 20 close to the first sound vent 120. When a user is wearing earphones and active underwater, the water flow entering the acoustic device from the first sound vent 120 can first flow through the gauze 230. The gauze 230 can disperse the water flow through the mesh, thereby relatively dispersing the impact force on the waterproof membrane 210. This reduces the force on each part of the waterproof membrane 210, making it less prone to deformation and improving the waterproofing ability of the waterproof membrane 210 (waterproof assembly 20).

[0052] In some embodiments, when the acoustic assembly 30 is positioned above the waterproof assembly 20, the target deformation occurs in at least one of the cushioning members 220 due to the force applied by the acoustic assembly 30. Since the cushioning member 220 is elastic and can generate springback, the target deformation is less than 50%. The degree of deformation of the cushioning member 220 can be calculated using the formula (original thickness - thickness after compression) / original thickness × 100%. For example, first, the original thickness of the cushioning member 220 is recorded. When the waterproof assembly 20 is pushed down, the degree of deformation of the cushioning member 220 can be obtained by recording the thickness of the cushioning member 220 after compression.

[0053] The acoustic assembly 30 may include an acoustic sensor 310 and a flexible printed circuit board 320 (FPC). The FPC is flexible and bendable. By bending the FPC, the space it occupies in the housing 10 can be reduced.

[0054] The acoustic sensor 310 may include a third sound vent 311. In some embodiments, the acoustic sensor 310 may include at least one microphone, the microphone including a third sound vent 311 that receives ambient sound passing through the waterproof assembly 20. In some embodiments, the acoustic sensor 310 may include at least one speaker, the speaker including a third sound vent 311. The speaker can emit a target sound when in operation. The target sound may be output from the third sound vent 311 and transmitted from the acoustic device 01 through the waterproof assembly 20. As described above, the waterproof assembly 20 covers the first sound vent 120 to prevent water from passing through the waterproof assembly 20 and coming into contact with certain components in the acoustic assembly 30. Specifically, the waterproof assembly 20 prevents water from passing through the waterproof assembly 20 and coming into contact with the acoustic sensor 310, and prevents water from entering the acoustic sensor 310 through the third sound vent 311.

[0055] The flexible circuit board 320 may be mechanically connected to the acoustic sensor 310. The mechanical connection may be by bonding, SMT patching, manual welding, seam joining, riveting, etc. For example, the acoustic sensor 310 may be fixed to the flexible circuit board 320 by welding. The flexible circuit board 320 may be located between the acoustic sensor 310 and the waterproof assembly 20. As described above, the acoustic assembly 30 may be connected to the waterproof assembly 20 by bonding it to the second adhesive surface 222 of the cushioning member 220. Specifically, the flexible circuit board 320 and the waterproof assembly 20 can be connected by bonding the flexible circuit board 320 to the second adhesive surface 222 of the cushioning member 220. In some embodiments, the flexible circuit board 320 can be more firmly bonded to the second adhesive surface 220 by applying further pressure to the acoustic assembly 30.

[0056] In some embodiments, the flexible circuit board 320 may be partially or entirely reinforced, in other words, the thickness or hardness of the flexible circuit board 320 can be increased in certain areas, while maintaining the flatness of the flexible circuit board 320. For example, a steel plate or PI material (Polymide, abbreviated as PI) may be used as a reinforcing plate 330 to reinforce the FPC. PI material is an engineering plastic with excellent mechanical properties, characterized by being lightweight, thin, and having good bendability. As shown in Figure 2, the reinforcing plate 330 may be located between the flexible circuit board 320 and the waterproof assembly 20. The flexible circuit board 320 may include a second sound channel 321. The second sound channel 321 and the third sound channel 311 may be coaxial, thereby minimizing the path for transmitting sound to or from the acoustic sensor 310, and ensuring that the acoustic sensor 310 has good acoustic performance. In some embodiments, the first opening of the first sound hole 120 in the inner wall of the housing 10 may be coaxial with the second sound hole 321 and the third sound hole 311, thereby ensuring that the path for transmitting sound to or from the sound device 01 is the shortest possible, and that the sound device 01 has good acoustic performance. In some embodiments, the first opening of the first sound hole 120 in the inner wall of the housing 10 may not be coaxial with the second sound hole 321 and the third sound hole 311, thereby allowing the first sound hole 120 to be formed in a wider range of locations within the housing 10.

[0057] In some embodiments, the diameter of the third sound hole 311 may be less than or equal to the diameter of the second sound hole 321, and the diameter of the second sound hole 321 may be smaller than the diameter of the first sound hole 120. By designing the diameter of the first sound hole 120 to be larger, the sound pressure can be increased. For example, the diameter of the first sound hole 120 may be 0.6 mm to 1.2 mm as described above, 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.

[0058] As shown in Figure 2, the height of the housing side wall 111 may be higher than the upper surface of the flexible circuit board 320, thereby forming a first housing space I3 for housing the sealing member 40. In some embodiments, the height of the housing side wall 111 of the housing cavity 110 may be higher than the upper surface of the acoustic sensor 310, thereby forming more space for housing the sealing member 40.

[0059] The acoustic device 01 may include multiple acoustic sensors 310 to realize 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 is a schematic configuration diagram of two acoustic sensors 310 according to some embodiments of the present disclosure. For example, if the acoustic sensor 310 is a microphone, a noise reduction effect can be achieved by installing two microphones in the earphone. One microphone may be an ordinary microphone used when the user makes a call and collects the human voice. The other microphone may have a noise collection function to easily collect noise from the surrounding environment. As described above, the first housing cavity 113 and the second housing cavity 114 can each house different components. Specifically, the first housing cavity 113 can house the first acoustic sensor 311, and the second housing cavity 114 can house the second acoustic sensor 312. The specific structures of the first acoustic sensor 311 and the second acoustic sensor 312 may be the same as those described above. The process for attaching the first acoustic sensor 311 and the second acoustic sensor 312 to the corresponding housing cavity 110 may be the same as the process described above and will not be described here.

[0060] The first acoustic sensor 311 and the second acoustic sensor 312 can share the same flexible circuit board 320. That is, the first acoustic sensor 311 and the second acoustic sensor 312 are mechanically connected to the flexible circuit board 320.

[0061] In some embodiments, the first acoustic sensor 311 and the second acoustic sensor 312 are mechanically connected to different flexible circuit boards 320. The two flexible circuit boards 320 of the two acoustic sensors 310 are further mechanically connected to connect the two acoustic sensors 310. The two flexible circuit boards 320 of the two acoustic sensors 310 may be connected via another connecting circuit board. For example, they may be connected by a Printed Circuit Board (PCB). Because PCBs are resistant to bending and have a certain hardness, they can provide good support for the two acoustic sensors 310. Alternatively, for example, the two flexible circuit boards 320 of the two acoustic sensors 310 may be electrically connected via board-to-board connectors (BTB connectors). Alternatively, for example, the two flexible circuit boards 320 of the two acoustic sensors 310 may be connected via another flexible circuit board (FPC). This disclosure does not limit the method of connecting the two acoustic sensors 310.

[0062] In some embodiments, the first acoustic sensor 311 and the first acoustic sensor 312 may be connected using a flexible circuit board 320. As mentioned above, the flexible circuit board 320 here may be a circuit board shared by the two acoustic sensors 310, as shown in Figure 3, and the two flexible circuit boards 320 of the two acoustic sensors 310 may be connected via another flexible circuit board.

[0063] As mentioned above, the height of the housing side wall 111 may be higher than the upper surface of the flexible circuit board 320. Therefore, if the acoustic device 01 includes multiple acoustic sensors 310, in order to connect the multiple acoustic sensors 310, the flexible circuit board 320 needs to be bent into the housing cavity 110, then extend out of the housing cavity 110, over the housing side wall 111, and bend until it contacts the housing bottom wall 140, thereby reducing the space occupied by the housing 10. To reduce the degree to which the flexible circuit board 320 is bent when it crosses the housing cavity 110 and to prevent the flexible circuit board from being excessively bent and damaged at the housing cavity side wall 111, a target segment 111-A may be installed on the housing side wall 111, allowing the flexible circuit board 320 to cross the housing side wall 111 from the target segment 111-A on the housing side wall 111. The target segment 111-A is described using the first housing cavity 113 as an example, but the second housing cavity 114 may have a similar design. Figure 4 is a diagram showing the configuration of the first accommodation cavity 113 according to this disclosure.

[0064] The target segment 111-A may have a flatter design compared to the rest of the housing sidewall 111, thereby reducing the degree of bending of the flexible circuit board 320 at the sidewall of the housing sidewall 111 and extending the service life of the flexible circuit board 320.

[0065] For example, the corners of other parts of the housing side wall 111 are all sharp right angles, and a flatter design of the target segment 111-A may have chamfered corners. Alternatively, for example, the corners of other parts of the housing side wall 111 may have small-angle chamfers, and a flatter design of the target segment 111-A may have large-angle chamfers. Alternatively, for example, the height difference between other parts of the housing side wall 111 and the inner wall of the housing 10 may be high, and a flatter design of the target segment 111-A may have a small height difference between it and the inner wall of the housing 10, with a slope between it and the inner wall of the housing 10 to support the flexible circuit board 320. As shown in Figure 4, in some embodiments, the target segment 111-A may include a guide opening 111-A1 and an inclined guide surface 111-A2 formed in the housing side wall 111. The upper surface of the flexible circuit board 320 may be flush with the upper surface of the guide opening 111-A1, thereby eliminating the need for the flexible circuit board 320 to bend beyond the housing side wall 111. The guide opening 111-A1 and the inner wall of the housing 10 may be connected by 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 guide surface 111-A2 can support the flexible circuit board 320, prevent it from floating, 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 at the side wall of the housing side wall 111 can be evaluated by the bending angle of the flexible circuit board 320. The smaller the bending angle, the lower the degree of bending. For example, when the bending angle is acute, the degree of bending is lower than when the bending angle is right angle. If there is no guide surface 111-A2, the flexible circuit board 320 needs to be bent at a right angle along the housing side wall 111. As shown in Figure 4, the inclined guide surface 111-A2 is installed, so when the flexible circuit board 320 is bent downwards, a sharp bending angle is avoided. Due to the support of the guide surface 111-A2, the bending angle of the flexible circuit board 320 is acute and the angle is very small.In some embodiments, the target segment 111-A may have a chamfered design in contrast to the right-angle design of the other segments, thereby preventing the flexible circuit board 320 from being directly bent as it passes through the housing side wall 111, and extending the service life of the flexible circuit board 320.

[0066] Figure 5 is a schematic diagram of the sealing position of a sealing member 40 according to some embodiments of the present disclosure. The sealing member 40 is shown in shaded areas. As shown in Figure 5, the sealing member 40 seals the first gap I1 described above. Since the first gap I1 is formed between the acoustic assembly 30 and the housing cavity 110, sealing the first gap I1 not only fixes the acoustic assembly 30 but also prevents liquid from entering the internal space of the housing 10 through the first gap I1. The sealing member 40 is obtained by filling the first gap I1 with a fluid sealant and then curing the fluid sealant. Note that Figure 5 is merely a schematic diagram of the position of the sealant after curing, and since the fluid sealant can flow and completely fill all gaps, the members / structures connected by the sealing member 40 are sealed together. The fluid sealant may be a sealant. For example, the sealant may be an ultraviolet adhesive (Ultraviolet Rays adhesive, abbreviated as UV adhesive), silica gel, or hot melt adhesive.

[0067] The sealing member 40 may further seal the second gap I2. Since the second gap I2 is formed between the waterproof assembly 20 and the housing cavity 110 and is closer to the water supply point than the first gap I1, sealing the second gap I2 can prevent liquid from passing through the second gap I2 into the first gap I1 and entering the interior of the housing 10. In some embodiments, if the sealing material is a UV adhesive, the UV adhesive can be flowed into the second gap I2 and then cured to seal the second gap I2.

[0068] As mentioned above, the height of the housing side wall 111 may be higher than the upper surface of the flexible circuit board 320, and thus a first housing space for housing the sealing member 40 can be formed. In some embodiments, if the sealing material is a UV adhesive, the UV adhesive can be applied to the first housing space to seal it and further prevent water from entering the internal space of the housing 10. In other words, by applying UV adhesive to the upper surface of the flexible circuit board 320 and the upper surface of the acoustic sensor 310, the relationship between each member and the housing 10 can be more firmly fixed and more tightly sealed.

[0069] Based on the above, this disclosure provides a waterproof acoustic device 01. By attaching the waterproof assembly 20 to 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, and the acoustic performance of the acoustic sensor 310 is not affected. Furthermore, the sealing member 40 seals the first gap between the acoustic assembly 30 and the housing cavity 110, preventing liquid from flowing into the inside of the housing 10 and providing waterproof protection to other components and circuits inside the housing 10. The above design improves the waterproof capability of the acoustic device 01 and guarantees the acoustic performance of the acoustic device 01.

[0070] Specific embodiments of this disclosure have been described above. Other embodiments are within the scope of the appended claims. In some cases, the operations or steps described in the claims may be performed in a different order than those in the embodiments, and the desired results can still be achieved. Furthermore, the processes depicted in the drawings do not necessarily require a specific order or sequence to achieve the desired results. In some embodiments, multitasking and parallel processing are possible or may be advantageous.

[0071] From the above, it will be clear to those skilled in the art, after reading the detailed disclosure, that the aforementioned detailed disclosure may be presented merely as examples and may not be limiting. Although not explicitly stated in this disclosure, those skilled in the art will understand that this disclosure includes various reasonable changes, improvements, and modifications to the embodiments. These changes, improvements, and modifications are intended to be suggested by this disclosure and are within the spirit and scope of the exemplary embodiments of this disclosure.

[0072] Furthermore, some terms in this disclosure are used to describe embodiments of this disclosure. For example, “one embodiment,” “embodiment,” and / or “several embodiments” mean that certain features, structures, or properties described in relation to such embodiment may be included in at least one embodiment of this disclosure. Therefore, it should be emphasized and understood that two or more references to “embodiment,” “one embodiment,” or “alternative embodiment” in any part of this disclosure do not necessarily all refer to the same embodiment. Also, certain features, structures, or properties may be appropriately combined in one or more embodiments of this disclosure.

[0073] In the foregoing description of the embodiments of this disclosure, please understand that, for the purpose of simplifying the disclosure and to aid in understanding a single feature, this disclosure combines various features into a single embodiment, drawing, or description. However, this does not mean that these combinations of features are essential, and it is entirely possible for those skilled in the art to extract some of these features and understand them as separate embodiments when reading this disclosure. That is, embodiments in this disclosure may be understood as combinations of multiple sub-embodied embodiments. Furthermore, the content of each sub-embodied embodiment may be less than all the features of a single embodiment previously disclosed.

[0074] All patents, patent applications, published patent gazettes, and other materials such as articles, books, specifications, publications, and documents referenced in this disclosure are incorporated into this disclosure in their entirety by reference, with the exception of any prosecution history documents that are inconsistent with or contradictory to the content of this disclosure, and any documents that may have a limited effect on the broadest scope of the claims of this disclosure (currently or later relating to this disclosure). For example, if there is any inconsistency or contradiction between the explanations, definitions and / or use of terms relating to any material included in this disclosure and the explanations, definitions and / or use of terms relating to this disclosure, the terms in this disclosure shall prevail.

[0075] Finally, it should be understood that the embodiments of the Application disclosed herein are intended to illustrate the principles of the embodiments of the Application. Other modified embodiments are also within the scope of the Application. Therefore, the embodiments disclosed herein are illustrative and not limiting. Those skilled in the art can implement the Invention of the Application by alternative configurations based on the embodiments of the Application. Therefore, the embodiments of the Application are not limited to those described in detail in the Application. [Explanation of Symbols]

[0076] 01 Sound equipment 10 Housing 20 Waterproof Assembly 30 Acoustic Assembly 40 sealing member 110 capacity cavity 111 Containment side wall 112 Enclosure bottom wall 120 First tone hole 130 Housing bottom wall 140 Housing side wall 210 Waterproof membrane 220 Cushioning material 230 gauze 310 Acoustic Sensor 311 Third tone hole 320 Flexible Circuit Boards 321 Second tone hole

Claims

1. A housing including a housing cavity in which a first sound passage hole is formed, A waterproof assembly comprising a waterproof assembly disposed within the housing cavity, sealed to the housing cavity, covering the first sound port to prevent liquid from passing through the waterproof assembly and coming into contact with the acoustic sensor, An acoustic assembly comprising the acoustic sensor, positioned on the side of the waterproof assembly away from the sound passage hole, sealed to the waterproof assembly, and having a first gap formed between it and the housing cavity, An acoustic device comprising: a sealing member that seals the first gap to fix the acoustic assembly and prevents the liquid from entering the internal space of the housing through the first gap.

2. The waterproof assembly has a first adhesive surface and a second adhesive surface, The first adhesive surface, by having adhesive properties, adheres the waterproof assembly to the housing cavity after being subjected to external pressure. The acoustic device according to claim 1, characterized in that the second adhesive surface has adhesive properties, thereby bonding the waterproof assembly and the acoustic assembly when it comes into contact with the acoustic assembly.

3. The acoustic device according to claim 1, characterized in that a second gap is formed between the waterproof assembly and the housing cavity, and the sealing member further seals the second gap to prevent the liquid from passing through the second gap to reach the first gap.

4. The aforementioned waterproof assembly is Waterproof membrane, The device includes at least one buffer member having a central hole, the at least one buffer member in contact with the edge region of the waterproof membrane, and the diameter of the first sound-permeable hole is less than or equal to the diameter of the central hole. The acoustic device according to claim 1, characterized in that the at least one cushioning member undergoes a target deformation due to the force applied by the acoustic assembly, and the target deformation is less than 50%.

5. The acoustic sensor includes at least one microphone that receives ambient sound that has passed through the waterproof assembly, or The acoustic device according to claim 3 or 4, characterized in that the acoustic sensor includes at least one speaker that emits a target sound when in operation, and the target sound is transmitted from the acoustic device through the waterproof assembly.

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

7. The diameter of the third tone hole is less than or equal to the diameter of the second tone hole. The acoustic device according to claim 6, characterized in that the diameter of the second sound-conducting hole is smaller than the diameter of the first sound-conducting hole.

8. The acoustic device according to claim 3 or 4, characterized in that the waterproof assembly further includes gauze, the gauze being installed on the side of the waterproof assembly adjacent to the first sound hole.

9. The acoustic device according to claim 3 or 4, characterized in that the waterproof assembly further includes gauze, the gauze being installed on the side of the waterproof assembly away from the first sound hole.

10. The inner wall of the housing forms the side wall of the housing cavity. The acoustic assembly further includes a flexible circuit board, the flexible circuit board being mechanically connected to the acoustic sensor, The acoustic device according to claim 1, characterized in that the height of the housing side wall is higher than the upper surface of the flexible circuit board, thereby forming a first housing space for housing the sealing member.

11. The flexible circuit board extends from the target segment of the housing side wall beyond the housing side wall. The acoustic device according to claim 10, characterized in that the target segment of the housing side wall has a flatter design than other parts of the housing side wall, thereby reducing the degree of bending of the flexible circuit board at the housing side wall.

12. The acoustic device according to claim 11, characterized in that the target segment includes a guide opening and an inclined guide surface formed in the housing side wall, and the guide opening and the inner wall of the housing are connected by the guide surface to support the flexible circuit board.

13. The acoustic device according to claim 11 or 12, characterized in that the flatter design includes at least one of a chamfered design or a beveled design.

14. The aforementioned acoustic sensor includes a first acoustic sensor and a second acoustic sensor. The inner wall of the housing includes the housing bottom wall and the housing side wall, The housing cavity includes a first housing cavity installed in the bottom wall of the housing and housing the first acoustic sensor, and a second housing cavity installed in the side wall of the housing and housing the second acoustic sensor. The acoustic device according to any one of claims 1 to 10, characterized in that 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 diameter of the first sound passage hole in the inner wall of the housing is smaller than the diameter of the first sound passage hole in the outer wall of the housing.

16. The acoustic device according to any one of claims 1 to 10, characterized in that the waterproof assembly is sealed to the housing bottom wall of the housing cavity, and the central axis of the first sound hole is installed at an inclination with respect to the housing bottom wall.

17. The acoustic device according to claim 1, characterized in that the sealing member is obtained by filling the first gap with a fluid sealing material and hardening it.

18. The acoustic device according to claim 17, characterized in that the fluid sealing material is a sealant.

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