Waterproof assembly for sound passage hole for acoustic device

Abstract

Provided in the present description is a waterproof assembly for a sound passage hole for an acoustic device. The waterproof assembly comprises a waterproof membrane, a cushioning member and a supporting member, wherein the waterproof membrane is configured to allow passage of air molecules whilst preventing passage of water molecules; the cushioning member comprises a bonding surface, the bonding surface being adhesive thus bonding the waterproof assembly to a target surface when subjected to external pressure; and the supporting member is located between the waterproof membrane and the cushioning member, thus reducing the degree of wrinkling of the waterproof membrane during installation of the waterproof assembly. By means of the provision of the supporting member and the cushioning member, the waterproof membrane is less prone to wrinkling and deformation during installation in the acoustic device, enabling the waterproof membrane to maintain good acoustic performance and waterproof effects.

Description

A waterproof component for a sound hole of an acoustic device Technical Field

[0001] The invention belongs to the technical field of electronic equipment, and in particular relates to a waterproof component for a sound hole of 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 a waterproof assembly for a sound hole in an acoustic device, capable of enhancing the waterproof performance of the acoustic device. The waterproof assembly includes a waterproof membrane, a buffer member, and a support member. The waterproof membrane is configured to allow air molecules to pass through and block water molecules from passing through. The buffer member includes an adhesive surface that is sticky enough to adhere the waterproof assembly to a target surface after being subjected to external pressure. The support member is located between the waterproof membrane and the buffer member to reduce the degree of wrinkling of the waterproof membrane when the waterproof assembly is assembled to the acoustic device. The support member and the buffer member are respectively provided with a first through hole and a second through hole.

[0006] In some embodiments, the acoustic device includes an acoustic sensor, which is a speaker or a microphone; and when the acoustic device is in operation, at least part of the sound waves passes through the waterproof membrane into or out of the acoustic device.

[0007] In some embodiments, the waterproof membrane includes a first waterproof surface and a second waterproof surface; the support member includes a first support member and a second support member, the first support member is connected to the first waterproof surface, and the second support member is connected to the second waterproof surface; the buffer member includes a first buffer member and a second buffer member, the first buffer member includes a first connecting surface and a first bonding surface, the first connecting surface is connected to the first support member, the second buffer member includes a second connecting surface and a second bonding surface, and the second connecting surface is connected to the second support member.

[0008] In some embodiments, the waterproof membrane includes a first waterproof surface and a second waterproof surface; the buffer component includes a first connecting surface and a first bonding surface; one side of the support component is connected to the first waterproof surface, and the other side of the support component is connected to the first connecting surface.

[0009] In some embodiments, the support member and the waterproof membrane are bonded to each other via an adhesive layer; and the thickness of the adhesive layer is in the range of 0.03 mm to 0.15 mm.

[0010] In some embodiments, a gauze is further included, connected to the buffer component to enhance the waterproof ability of the waterproof component.

[0011] In some embodiments, the acoustic device includes a shell, the sound hole is arranged on the shell, and the mesh is arranged on a side of the waterproof component close to the sound hole.

[0012] In some embodiments, the buffer member and the support member are annular, the first through hole and the second through hole are circular holes, the diameters of the first through hole and the second through hole range from 0.8 mm to 1.8 mm; and the outer diameters of the buffer member and the support member range from 2.4 mm to 4.6 mm.

[0013] In some embodiments, the thickness of the waterproof membrane is less than or equal to 0.10 mm.

[0014] In some embodiments, the buffer component is an elastic component, wherein when the waterproof component is assembled, the buffer component is the component with the largest elastic deformation in the waterproof component.

[0015] In some embodiments, the material of the buffer element includes foam glue or acrylic glue.

[0016] In some embodiments, the buffer member has a thickness greater than or equal to 0.1 mm.

[0017] In some embodiments, the thickness of the support member is less than or equal to 0.1 mm.

[0018] In some embodiments, the total thickness of the waterproof component ranges from 0.37 mm to 0.61 mm so as to be installed in the acoustic device.

[0019] As can be seen from the above technical solution, the waterproof assembly provided in this specification, by providing support members and buffer members, prevents the waterproof membrane from wrinkling and deformation during assembly to acoustic equipment, thereby maintaining good acoustic performance and waterproofing. Furthermore, the support members and buffer members described in this specification are symmetrically stacked on both sides of the waterproof membrane, providing support and protection from both sides. This allows the membrane to maintain good acoustic performance and waterproofing, thereby enhancing the waterproofing effectiveness of the waterproof assembly.

[0020] Other functions of the waterproof assembly provided by this specification will be partially listed in the following description. The creative aspects of the waterproof assembly 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

[0021] 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.

[0022] FIG1A shows a structural diagram of an acoustic device according to some embodiments of this specification;

[0023] FIG1B shows a structural diagram of a waterproof assembly according to some embodiments of the present application;

[0024] FIG2A shows a schematic diagram of a waterproof membrane under pressure according to some embodiments of this specification;

[0025] FIG2B shows a schematic diagram of a waterproof assembly provided by some embodiments of this specification when it is subjected to pressure;

[0026] FIG3 shows a schematic structural diagram of a waterproof component provided in some embodiments of this specification installed in an acoustic device; and

[0027] FIG4 is a schematic diagram showing the position of a gauze provided according to some embodiments of the present specification. DETAILED DESCRIPTION

[0028] 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.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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. In other words, 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.

[0034] 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.

[0035] In this specification, "plurality" means two or more.

[0036] 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.

[0037] 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.

[0038] The present application is described in detail below through specific embodiments:

[0039] 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 to 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, for example, a waterproof structure is provided at the sound hole to prevent liquid from entering. This specification provides a waterproof component, which is arranged near the sound hole of the 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. In the following introduction, the waterproof component is introduced by taking the acoustic device as a (wireless) headset as an example. The (wireless) headset can be a bone conduction headset, an air conduction headset or a bone-air conduction headset. However, those skilled in the art will appreciate that the acoustic device may also be other devices such as a mobile phone, a computer, a recorder, etc.

[0040] Figure 1A shows a structural diagram of an acoustic device 01 according to some embodiments of the present disclosure. Figure 1B shows a structural diagram of a waterproof assembly 10 according to some embodiments of the present disclosure.

[0041] The acoustic device 01 shown in FIG1A is a (wireless) headset. The following description will take the (wireless) headset as an example. The (wireless) headset can be a bone conduction headset, an air conduction headset, or a bone-air conduction headset. It is understood that the acoustic device 01 can also be other acoustic devices such as a mobile phone, a computer, or a recorder.

[0042] As shown in FIG1B , the waterproof assembly 10 may include a waterproof membrane 100, a support member 200, and a buffer member 300. The support member 200 may be located between the waterproof membrane 100 and the buffer member 300. In some embodiments, the waterproof assembly 10 may further include a gauze (not shown in FIG1B ).

[0043] The waterproof membrane 100 allows air molecules to pass through while blocking water molecules. In some embodiments, the waterproof membrane 100 can be made of a waterproof and breathable material with an equivalent microporous structure. This waterproof and breathable material is characterized by air molecules passing through the equivalent microporous structure, while water molecules cannot. Furthermore, the surface tension of the waterproof membrane 100 can cause water droplets to form spheres on the membrane's surface, reducing the contact area between water molecules and the waterproof membrane 100, further enhancing the waterproofing effectiveness of the waterproof membrane 100. Specifically, an acoustic sensor, such as a speaker or microphone, can be installed at the sound hole of the acoustic device 01. When the acoustic device 01 is operating, the acoustic sensor transmits or receives sound waves. When the sound waves propagate to the interface of the waterproof membrane 100, air molecules, due to the larger inter-molecular spacing and smaller molecular size, can freely enter and exit the equivalent microporous structure of the waterproof membrane 100. For example, ambient sound waves can pass through the waterproof membrane 100 to be collected by the microphone, or sound waves generated by the speaker can pass through the waterproof membrane 100 to the outside of the acoustic device 01. That is, the pore size of the equivalent microporous structure of the waterproof membrane 100 needs to satisfy the following requirements: air molecules can be transmitted into or out of the acoustic device from the equivalent microporous structure of the waterproof membrane 100 .

[0044] The material of the waterproof membrane 100 also needs to meet the requirements of the acoustic device 01 for water pressure resistance and its impact on acoustic performance, etc. Among them, the waterproof membrane 100 needs to be able to withstand water pressure above the preset value, and the preset value can be obtained by the acoustic device 01 during the waterproof test. For example, the headphones equipped with the waterproof membrane 100 are tested for dynamic waterproofness and static waterproofness, and the waterproof membrane 100 that reaches IPX5 waterproofness and IPX68 waterproofness is selected and its corresponding water pressure resistance value is used as the preset value. The static waterproof test is to immerse the acoustic device equipped with the waterproof membrane in still water and withstand the preset static water pressure to test the waterproofness of the waterproof membrane 100; the dynamic waterproof test is to immerse the device equipped with the waterproof membrane 100 in water and simulate the dynamic simulation of the user doing sports such as swimming to test the waterproofness of the waterproof membrane 100.

[0045] In addition, the waterproof membrane 100 also needs to have a small impact on acoustic performance. The impact of the waterproof membrane 100 on acoustic performance can be measured by sound transmission loss. Sound transmission loss refers to the change in frequency distribution and volume of sound of a preset frequency after passing through the waterproof membrane 100. If the waterproof membrane 100 acts as a vibration medium to propagate the vibration of the sound, the frequency response characteristics of the waterproof membrane 100 itself in vibration will affect the propagation of the sound as a transfer function. For example, the decibel level of the sound will decrease and the frequency distribution will also change after passing through the waterproof membrane 100. The choice of waterproof membrane 100 should result in a small sound transmission loss. For example, headphones can use a waterproof membrane 100 with a sound transmission loss of less than 2dB.

[0046] In some embodiments, the waterproof membrane 100 can be made of expanded polytetrafluoroethylene (ePTFE) or polyurethane (PU). Both materials meet the aforementioned requirements in terms of water pressure resistance and impact on acoustic performance. ePTFE also has excellent corrosion and high temperature resistance, enabling the acoustic device 01 to be used in a wider range of scenarios. Of course, ePTFE and PU are just two of the many materials that can be used as the waterproof membrane in this application. The waterproof membrane 100 in this application can also be made of other materials, and this application does not limit this.

[0047] In some embodiments, the thickness of waterproof membrane 100 is 0.10 mm or less to ensure waterproofing while minimizing the space occupied by the housing. The shape of waterproof membrane 100 can be designed or tailored to suit installation requirements. As shown in FIG1B , waterproof membrane 100 is circular. Of course, waterproof membrane 100 may also be square, oval, rectangular, or track-shaped, among other shapes, but this specification does not require this.

[0048] The waterproof membrane 100 can be connected to the support member 200. The support member 200 can reduce the degree of wrinkling of the waterproof membrane 100 during the installation process of the waterproof assembly 10. When the waterproof assembly 10 is assembled into the earphones, it is typically subjected to external pressure to ensure assembly stability. The external pressure can be the weight of the acoustic components or the pressure applied by a pressure jig. This pressure may have a lateral component, that is, the waterproof membrane 100 is subjected to lateral shear force. If the waterproof membrane 100 were to withstand this shear force alone, it would wrinkle, affecting its waterproof performance. Because the support member 200 has strong deformation resistance, it will hardly deform when subjected to shear force. Therefore, the shear resistance of the waterproof membrane 100 supported by the support member 200 is also enhanced, thereby reducing the degree of wrinkling of the waterproof membrane 100 during the assembly process. The degree of wrinkling of the waterproof membrane 100 can be the height difference between the highest and lowest points of the wrinkled waterproof membrane 100, based on the waterproof membrane 100 being in a flat state. The greater the height difference, the greater the degree of wrinkling; the smaller the height difference, the smaller the degree of wrinkling. The degree of wrinkling of the waterproof membrane 100 can be observed through an industrial microscope. The greater the deformation (wrinkling) of the waterproof membrane 100, the greater the influence of its own transfer function on sound propagation, and the greater the change in the sound quality and volume of the sound passing through the waterproof membrane 100. The support member 200 makes it difficult for the waterproof membrane 100 to wrinkle and deform during the assembly process, thereby ensuring that the change in its sound transmission loss is relatively small. In addition, since the waterproof membrane 100 is not easily deformed during the assembly process, it can maintain its original shape and initial transfer function as much as possible, thereby ensuring the consistency of multiple waterproof components 10 on the same earphone or waterproof components 10 (waterproof membrane 100) on different earphones.

[0049] The waterproof membrane 100 includes a first waterproof surface 110 and a second waterproof surface 120. In some embodiments, the support member 200 may be a single support member 200, which may be connected to only one side of the waterproof membrane 100, for example, the first waterproof surface 110 or the second waterproof surface 120. In other embodiments, the support member 200 may be a plurality of support members 200, which are connected to the waterproof membrane 100 to ensure that the waterproof membrane 100 is not prone to wrinkling in both stress-bearing directions (e.g., toward the first waterproof surface 110 and toward the second waterproof surface 120), further enhancing the waterproof membrane 100's shear resistance.

[0050] In some embodiments, the support members 200 may include a first support member 210 and a second support member 220, symmetrically located on either side of the waterproof membrane 100. The first support member 210 is connected to the first waterproof surface 110, and the second support member 220 is connected to the second waterproof surface 120. The support members 200 are connected to both sides of the waterproof membrane 100, forming a "sandwich" structure between the two support members 200. When the waterproof assembly 100 is subjected to shear forces, this symmetrical structure allows the waterproof membrane 100 to move together, preventing the membrane 100 from wrinkling or deforming due to shear forces alone.

[0051] The support member 200 and the waterproof membrane 100 can be bonded together via an adhesive layer 400. In some embodiments, the adhesive layer 400 is acrylic glue. Acrylic glue has relatively high strength and rigidity. Using acrylic glue to bond the support member 200 and the waterproof membrane 100 ensures that when the support member 200 and the waterproof membrane 100 are subjected to lateral forces, the adhesive layer 400 is less likely to deform, thereby causing deformation of the waterproof membrane 100. To ensure a secure bond, the adhesive layer 400 should not be too thin or too thick. This ensures that the waterproof assembly 10 is easily processed and that the "sandwich" structure of the waterproof membrane 100 sandwiched between the two support members 200 achieves greater strength. In some embodiments, the thickness of the adhesive layer 400 can range from 0.03 mm to 0.15 mm.

[0052] A first through hole 230 is provided on the support member 200. When the acoustic device 01 includes a housing and a sound hole is provided on the housing, the first through hole 230 can be adapted to the size of the sound hole. The shape of the first through hole 230 can be circular, rectangular, oval, square, etc. As shown in FIG1B , the first through hole 230 is circular. As long as the shape of the first through hole 230 can be adapted to the sound hole, this specification does not make any specific requirements on the shape of the through hole 230. The size of the first through hole 230 must also be appropriate. The support member 200 is annular and the first through hole 230 is a circular hole as an example. The diameter range of the circular hole should not be too small to avoid affecting the sound intake, resulting in increased sound loss of the waterproof component 10, and thus causing the waterproof component 10 to affect the acoustic performance of the acoustic device 01. In some embodiments, the (inner) diameter range of the circular hole can be between 0.8 mm and 1.8 mm. The annular area of ​​the support member 200 and the waterproof membrane 100 are bonded by an adhesive layer 400. The annular bonding area between the support member 200 and the waterproof membrane 100 should not be too small to ensure the firmness of the bonding between the support member 200 and the waterproof membrane 100 and the waterproof performance. In some embodiments, the width of the annular bonding area is greater than 0.8 mm to ensure that the annular bonding area has strong bonding ability. The annular bonding area between the support member 200 and the waterproof membrane 100 should not be too large to match the assembly space reserved for the waterproof component 10 of the acoustic device 01. In some embodiments, the width of the annular bonding area ranges from 0.8 mm to 1.4 mm to ensure that the annular bonding area has strong bonding ability and matches the assembly space. In some embodiments, based on the above-mentioned diameter range of the circular hole and the width range of the annular bonding area, it can be seen that the outer diameter range of the circular ring can be 2.4 mm to 4.6 mm.

[0053] In some embodiments, the support member 200 can be made of polyethylene terephthalate (PET). PET has excellent deformation resistance, providing support for the waterproof membrane 100 and enhancing the shear resistance of the waterproof assembly 10 (waterproof membrane 100). In some embodiments, the support member 200 has a thickness of 0.1 mm or less, minimizing the space occupied within the housing while ensuring support strength.

[0054] In some embodiments, the buffer 300 may be an elastic member having an adhesive surface. The adhesive surface is sticky and can adhere the waterproof component 10 to the target surface after being subjected to external pressure. In other embodiments, the buffer 300 may be an elastic adhesive. The acoustic device 01 may include a shell, which is provided with a sound hole, and the target surface is the inner wall surface of the shell around the sound hole. The buffer 300 can be bonded to the shell through the adhesive surface so that the waterproof component 10 can be fixed to the inner wall of the shell and cover the sound hole. For another example, the acoustic device 01 may also include an acoustic component. The surface on the acoustic component is the target surface, and the buffer 300 is bonded to the acoustic component through the adhesive surface to fix the acoustic component. A second through hole 330 is provided on the buffer 300. The shape and size of the second through hole 330 can be similar to the first through hole 230 mentioned above, and will not be repeated here.

[0055] The buffer member 300 can be connected to the support member 200. In some embodiments, the buffer member 300 can be a single buffer member 300. The single buffer member 300 is connected to one side of the support member 200. In other embodiments, the buffer member 300 can also be a plurality of buffer members 300. For example, the buffer member 300 can include a first buffer member 310 and a second buffer member 320. Corresponding to the first support member 210 and the second support member 220, the first buffer member 310 is connected to the first support member 210, and the second buffer member 320 is connected to the second support member 220. The first buffer member 310 can include a first connecting surface 311 and a first bonding surface 312. The first connecting surface 311 can be connected to the first support member 210. The first connecting surface 311 can also be adhesive and can be bonded to the first support member 210. The second buffer member 320 can include a second connecting surface 321 and a second bonding surface 322. The second connecting surface 321 can be connected to the second support member 220. The second connection surface 321 may also be adhesive and may be bonded to the second support member 220. The first bonding surface 312 or the second bonding surface 322 of the buffer member 300 may be bonded to a target surface, and the other bonding surface may be connected to other parts or other acoustic components in the acoustic device 01.

[0056] As previously described, the waterproof assembly 10 may include a single support member 200 and a single buffer member 300. One side of the waterproof membrane 100 may be connected to the support member 200. One side of the support member 200 may be connected to the first waterproof surface 110 of the waterproof membrane 100, while the other side of the support member 200 may be connected to the first connection surface 311 of the buffer member 300. The support member 200 and the buffer member 300 form a single-sided structure, thereby providing support for the waterproof membrane 100 and ensuring a stable waterproof effect.

[0057] As previously mentioned, the two sides of the waterproof membrane 100 can be connected to the support members 200 respectively. The two support members 200 sandwich the waterproof membrane 100, thereby forming a sandwich structure of "support member 220-waterproof membrane 100-support member 210". When the waterproof membrane 100 is subjected to shear force (lateral force) during assembly, the above-mentioned symmetrical structure allows the waterproof membrane 100 to be sandwiched between the support members 200 to form a whole. This whole body slides left and right under the action of the shear force. In other words, the waterproof membrane 100 will not be subjected to a single shear force and thus wrinkle or deform. Furthermore, two buffer members 300 can be connected to the two sides of the sandwich structure, a first buffer member 310 and a second buffer member 320. The buffer members 300 can evenly disperse the physical pressure (impact energy) applied to the waterproof component 10. Therefore, during the installation of the waterproof component 100, the buffer members 300 can protect the waterproof membrane 100 from wrinkling due to large impact, thereby affecting its waterproof and acoustic performance. Furthermore, the side of the buffer member 300 not connected to the sandwich structure can be adhesive, allowing the sandwich structure to adhere to the target surface and complete the assembly. The "sandwich" structure and the double-layer support member 210 structure ensure that both sides of the waterproof membrane 100 are protected, and the waterproof performance is more stable.

[0058] In some embodiments, when the waterproof component 10 is assembled into the interior of the shell of the acoustic device 01, the first bonding surface 312 can be adhered to the inner wall of the shell around the sound hole. When the waterproof component 10 is subjected to pressure, the first bonding surface 312 and the shell are firmly bonded. For example, pressure can be applied by a pressure jig in a direction perpendicular to the first bonding surface 312 for a certain period of time, so that the first bonding surface 312 and the inner wall of the shell are firmly bonded. Due to the existence of tool errors, the pressure jig acts on the waterproof component 10 in the horizontal direction (the direction parallel to the first bonding surface) in addition to the vertical direction. For example, the waterproof component 10 is subjected to pressure generated by the gravity of the acoustic component itself. Due to the uncertainty of the placement position of the acoustic component, the acoustic component acts on the waterproof component 10 in the horizontal direction (the direction parallel to the first bonding surface) in addition to the vertical direction. (Shear force). Since the support member 200 has a strong deformation resistance, it will hardly deform when subjected to the above-mentioned shear force, thereby enhancing the shear resistance of the waterproof component 10 (waterproof membrane 100), thereby ensuring that the waterproof membrane 100 is not easily deformed during the assembly process and ensuring that the acoustic loss is small.

[0059] At the same time, the aforementioned buffer member 300 is an elastic member or an adhesive with elasticity. In other words, the buffer member 300 is elastic. The buffer member 300 can evenly disperse the high-speed physical pressure (impact energy) on the waterproof component 10. When the waterproof component 10 is subjected to a force in a direction perpendicular to the first bonding surface 312, the buffer member 300 can be compressed in the vertical direction. At the same time, since the buffer member 300 is elastic, even if the waterproof component 10 is subjected to a lateral shear force, at least part of the shear force can be released first in the elastic buffer member 300. That is, the shear force is used to cause the buffer member 300 to deform laterally. Thereby, the effect of the shear force acting on the support member 200 and the waterproof membrane 100 is reduced, so that the support member 200 and the waterproof membrane 100 will not generate a large shear stress, thereby avoiding damage to the internal structures of the two, further improving the shear resistance of the waterproof component 10, and ensuring the waterproof performance of the waterproof component 10.

[0060] Because the cushioning element 300 is elastic, it can produce greater elastic deformation than other structures in the waterproof assembly 10, allowing the waterproof assembly 10 to better adapt to the tolerances of the assembly space within the housing. For example, if the height of the reserved assembly space within the earphone housing is too small, the cushioning element 300 can be compressed to make the waterproof assembly 10 adapt to the height of the assembly space.

[0061] The degree of elastic deformation of each component in the waterproof assembly 10 can be expressed as (original thickness - thickness after compression) / original thickness x 100%

[0062] For example, by first recording the original thickness of each component, when the waterproof assembly 10 is pressed down, the thickness of each component after being compressed is recorded, thereby obtaining the degree of deformation of each component.

[0063] FIG2A is a schematic diagram showing a waterproof membrane 100 provided according to some embodiments of the present specification when it is subjected to pressure; FIG2B is a schematic diagram showing a waterproof assembly 10 provided according to some embodiments of the present specification when it is subjected to pressure.

[0064] When the first waterproof surface 110 or the second waterproof surface 120 of the waterproof membrane 100 is subjected to a pressure F that is not perpendicular to the surface of the waterproof membrane 100, wrinkles will form. As shown in Figure 2A, the pressure F includes a component perpendicular to the surface of the waterproof membrane 100 and a component directed to the right along the surface of the waterproof membrane 100. The rightward component causes the waterproof membrane 100 to wrinkle. The wrinkled waterproof membrane 100 has a height difference H between its highest and lowest points.

[0065] As shown in Figure 2B, the support member 200 includes a first support member 210 and a second support member 220, which are symmetrically located on either side of the waterproof membrane 100. The support members 200 are connected to both sides of the waterproof membrane 100, forming a "sandwich" structure between the two support members 200. When the "sandwich" structure formed by the waterproof membrane 100 and the support members 200 is subjected to a pressure F that is not perpendicular to the surface of the waterproof membrane 100, the support members 200 exhibit a strong resistance to deformation and thus exhibit little deformation. The waterproof membrane 100, sandwiched between the first and second support members 210, 220, forms a single unit and thus exhibits little deformation. The first and second buffer members 310, 320 are located on either side of the support member 200, sandwiching the sandwich structure. Due to their elasticity, the buffer members 300 absorb the majority of the deformation when subjected to the pressure F. As shown in Figure 2B, the component F2 causes the buffer 300 to deform, thereby driving the entire waterproof assembly 10 to slide left and right. During this process, the waterproof membrane 100 hardly deforms, thereby ensuring that the acoustic loss is small.

[0066] In some embodiments, the material of the buffer 300 can be foam glue, or foam + acrylic glue (acrylate adhesive), or acrylic glue (acrylate adhesive). Foam glue has the advantages of good elasticity, light weight, and ultra-thin volume, and can provide good elastic deformation ability, while reducing the overall volume and weight of the waterproof component 10. Acrylic glue has the advantages of high strength, impact resistance, and strong shear force, which can improve the overall strength and shear resistance of the waterproof component 10. In some embodiments, the first buffer 310 and the second buffer 320 can both be foam glue or both be foam + acrylic glue. In other embodiments, the first buffer 310 and the second buffer 320 can also be one foam glue and the other foam + acrylic glue.

[0067] In some embodiments, the thickness range of the buffer 300 is greater than or equal to 0.1 mm. When the buffer 100 has a certain thickness, the deformability of the waterproof component 10 can be increased, thereby facilitating the assembly of the waterproof component 10 into the shell. The thickness of the first buffer 310 and the second buffer 320 can be the same or different. For example, the first buffer 310 and the second buffer 320 can both be foam glue. The thickness of the foam glue used in the first buffer 310 is 0.1 mm, and it is bonded to the inner wall of the shell. The thickness of the foam glue used in the second buffer 320 is 0.2 mm, and it is bonded to the acoustic component. The thicker the foam glue, the stronger the bonding force and waterproof ability. Since the water pressure impact force at the sound hole is relatively large, the thickness of the foam glue bonded to the inner wall around the sound hole can be thicker to ensure the firmness of the bond.

[0068] The total thickness range of the waterproof component 10 can be adapted to and higher than the thickness of the assembly space reserved for the waterproof component 10 at the sound hole of the shell of the acoustic device 01, so that after the waterproof component 10 is assembled into the assembly space, it can be pressed by the microphone or speaker in the acoustic device 01. Figure 3 shows a schematic diagram of the structure of the waterproof component 10 provided in some embodiments of this specification installed in the acoustic device 01. In some embodiments, the total thickness range of the waterproof component 10 is 0.37mm to 0.61mm, so as to ensure that the waterproof component 10 has a certain thickness for easy installation while reducing the space occupied by the shell. As shown in Figure 3, a cavity 500 for installing the waterproof component 10 is reserved at the sound hole of the earphone. For example, the depth range of the cavity 500 can be 0.25mm to 0.45mm, that is, the thickness range reserved by the shell for the waterproof component 10 is 0.25mm to 0.45mm. When the thickness of the waterproof component 10 is greater than the depth of the accommodating cavity 500 , the waterproof component 10 can be pressed to be flush with the accommodating cavity 500 after being placed in the accommodating cavity 500 , as shown in FIG. 3 .

[0069] In some embodiments, the waterproof component 10 may further include a gauze 600. FIG4 shows a schematic diagram of the position of the gauze 600 provided according to some embodiments of the present specification. As previously mentioned, the acoustic device 01 may include a shell, and the sound hole may be provided on the shell. In some embodiments, the gauze 600 may be provided on the side of the waterproof component 10 close to the sound hole. When the user wears the acoustic device 01 for underwater activities, if water flows into the acoustic device 01 from the sound hole, it will first flow through the gauze 600. At this time, the gauze can disperse the water flow through the mesh, so that the impact force on the waterproof membrane 100 can be more dispersed, so that the force on the waterproof membrane 100 is relatively small, and the waterproof membrane 100 is not easily deformed, so as to increase the waterproof ability of the waterproof membrane 100 (waterproof component 10). In some embodiments, the gauze 600 can be provided on the side of the waterproof component 10 away from the sound hole, as shown in FIG4. When the waterproof membrane 100 encounters a large water pressure, the waterproof membrane 100 may be deformed, affecting its waterproof performance. At this time, the gauze 600 can be set behind the waterproof membrane 100 to play a supporting or blocking role, thereby preventing the waterproof membrane 100 from excessive deformation, which in turn causes the acoustic properties of the waterproof membrane 100 to change, thereby increasing the waterproof ability of the waterproof membrane 100.

[0070] In some embodiments, the waterproof component 10 may further include a steel mesh. Similar to the gauze mesh, the steel mesh is disposed on the side of the waterproof component 10 close to the sound hole. The steel mesh can disperse the water flow through the mesh holes, thereby dispersing the impact force on the waterproof membrane 100, making the force on the waterproof membrane 100 relatively small, and making the waterproof membrane 100 less likely to deform, thereby increasing the waterproof ability of the waterproof membrane 100 (waterproof component 10). In some embodiments, the steel mesh can be disposed on the side of the waterproof component 10 away from the sound hole, playing a supporting or blocking role behind the waterproof membrane 100, thereby preventing the waterproof membrane 100 from excessive deformation. In addition, the steel mesh has greater rigidity, is less likely to deform, and can withstand greater water pressure, thereby effectively preventing the waterproof membrane 100 from deforming.

[0071] In some embodiments, the waterproof assembly 10 may further include a microporous plate. The microporous plate may be positioned on the side of the waterproof assembly 10 away from the sound hole. In some embodiments, the microporous plate may also be positioned on the side of the waterproof assembly 10 closer to the sound hole. The function of the microporous plate is similar to that of the gauze and steel mesh described above and will not be further described here.

[0072] It is worth noting that the waterproof assembly 10 may be provided with only one of the aforementioned gauze 600, steel mesh, or microporous plate to divert or support the waterproof membrane 100, or may be provided with multiple of the aforementioned gauze 600, steel mesh, and microporous plate to enhance the protective capability of the waterproof assembly 10. In some embodiments, the waterproof assembly 10 includes both the gauze 600 and the steel mesh.

[0073] In summary, this specification provides a waterproof assembly 10 for a sound hole in an acoustic device 01. The waterproof assembly 10 is configured with a "sandwich" structure of "support member 200-waterproof membrane 100-support member 200" to prevent the waterproof membrane 100 of the waterproof assembly 10 from wrinkling and deforming due to shear forces during assembly to the acoustic device 01, thereby enabling the waterproof assembly 10 to maintain good acoustic performance and a waterproof effect. Furthermore, the support members 200 in this specification are symmetrically stacked on both sides of the aforementioned "sandwich" structure, forming a more stable, symmetrically distributed stacking structure. This allows the waterproof membrane 100 to be supported and protected from both above and below, thereby maintaining good acoustic performance and a waterproof effect, further enhancing the waterproof effect of the waterproof assembly 10.

[0074] 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.

[0075] 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.

[0076] 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.

[0077] 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.

[0078] 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.

[0079] 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. A waterproof component for a sound hole of an acoustic device, characterized in that Comprising: A waterproof film configured to allow air molecules to pass through and block water molecules from passing through; A buffer member including an adhesive surface having adhesiveness to adhere the waterproof component to a target surface after being subjected to an external pressure; And A support member located between the waterproof film and the buffer member to reduce the degree of wrinkling of the waterproof film when the waterproof component is assembled to an acoustic device, wherein the support member and the buffer member are respectively provided with a first through hole and a second through hole.

2. The waterproof component according to claim 1, wherein The acoustic device includes an acoustic sensor, and the acoustic sensor is a speaker or a microphone; and When the acoustic device operates, at least part of the sound waves pass through the waterproof film and enter or exit the acoustic device.

3. The waterproof component according to claim 1, wherein The waterproof film includes a first waterproof surface and a second waterproof surface; The support member includes a first support member and a second support member, the first support member is connected to the first waterproof surface, and the second support member is connected to the second waterproof surface; The buffer member includes a first buffer member and a second buffer member, the first buffer member includes a first connection surface and a first adhesive surface, the first connection surface is connected to the first support member, the second buffer member includes a second connection surface and a second adhesive surface, and the second connection surface is connected to the second support member.

4. The waterproof component according to claim 1, wherein The waterproof film includes a first waterproof surface and a second waterproof surface; The buffer member includes a first connection surface and a first adhesive surface; One side of the support member is connected to the first waterproof surface, and the other side of the support member is connected to the first connection surface.

5. The waterproof component according to any one of claims 1-4, wherein The support member and the waterproof film are adhered through an adhesive layer; and The thickness range of the adhesive layer is 0.03 mm to 0.15 mm.

6. The waterproof component according to claim 1, wherein It further includes a mesh connected to the buffer member to enhance the waterproof ability of the waterproof component.

7. The waterproof component according to claim 6, wherein, The acoustic device includes a housing, the sound transmission hole is provided on the housing, and the mesh is provided on a side of the waterproof component close to the sound transmission hole.

8. The waterproof component according to claim 1, characterized in that, The buffer member and the support member are circular, the first through hole and the second through hole are circular holes, and the diameter range of the first through hole and the second through hole is 0.8 mm to 1.8 mm; and The outer diameter range of the buffer member and the support member is 2.4 mm to 4.6 mm.

9. The waterproof component according to any one of claims 1-8, characterized in that, The thickness of the waterproof film is less than or equal to 0.10 mm.

10. The waterproof component according to claim 1, characterized in that, The buffer member is an elastic member, and when the waterproof component is assembled, the buffer member is the component with the largest elastic deformation in the waterproof component.

11. The waterproof component according to claim 1, wherein The material of the buffer member includes foam glue or acrylic glue.

12. The waterproof component according to claim 10 or 11, wherein The thickness range of the buffer member is greater than or equal to 0.1 mm.

13. The waterproof component according to any one of claims 1-4, characterized in that, The thickness range of the support member is less than or equal to 0.1 mm.

14. The waterproof component according to claim 1, characterized in that, The total thickness range of the waterproof component is 0.37 mm to 0.61 mm for installation in the acoustic device.

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