Ear cap structure, hearing aid and hearing aid kit

Abstract

The utility model relates to the technical field of hearing aid, disclose a kind of ear cap structure, hearing aid and hearing aid kit, its ear cap structure includes installation main body and cap body, installation main body is built-in sound transmission channel, and installation mouth is provided in the first end portion of the installation main body, at least one protruding structure is provided in the second end portion of the installation main body, and the protruding structure is provided with sound transmission hole, the sound transmission hole is communicated with the sound transmission channel and is set;Cap body one end of the cap body is connected with the second end portion of the installation main body, and the other end of cap body is extended and set along the direction of the second end portion of installation main body away from it.The utility model is built-in sound transmission channel by installation main body and is provided with protruding structure with sound transmission hole, in combination with the extension design of cap body, by optimizing sound transmission path structure effectively barrier cerumen enters sound transmission channel, with the advantage that significantly improve the performance of anti-blocking, guarantee sound transmission quality and prolong the service life of equipment.

Description

Technical Field

[0001] This utility model belongs to the field of hearing aid technology, specifically relating to an ear cap structure, a hearing aid, and a hearing aid kit. Background Technology

[0002] Hearing aids, as an important hearing assistive device, are relied upon by a large number of hearing-impaired individuals. Their comfort and reliability during extended wear are key indicators for evaluating product performance. Currently, mainstream in-ear hearing aids, including in-the-ear (ITE), in-the-canal (ITC), and completely-in-the-canal (CIC) types, require the main body or sound outlet to be placed inside the user's ear canal. While this close-fitting physical structure achieves efficient sound transmission and a discreet appearance, it also presents a long-standing and widespread technical challenge—cerumen blockage.

[0003] Earwax, formed from the normal secretions of the skin in the external auditory canal and shed cells, has a protective function. However, when wearing hearing aids, the device itself obstructs the natural ventilation of the ear canal and the normal drainage of earwax, creating a relatively closed, warm, and humid microenvironment. This can not only stimulate increased earwax secretion but also cause it to accumulate more rapidly in the hearing aid's sound outlet, acoustic vent, microphone inlet, and outer shell. Over time, the continuous accumulation of earwax can severely block the acoustic channels, causing sound attenuation, distortion, and even feedback, significantly reducing sound quality and gain, and affecting the user's listening experience. More seriously, the viscous and somewhat corrosive earwax can penetrate the device's interior, corroding delicate electronic components such as the receiver, directly leading to permanent performance degradation or complete damage, shortening the device's lifespan, and increasing the user's maintenance costs and financial burden. In addition, the buildup of earwax can cause hygiene problems, such as itching or inflammation of the ear canal, affecting the user's comfort and health.

[0004] Currently, users mainly rely on regular manual cleaning to address this problem. However, this process is cumbersome and has limited cleaning effectiveness, often failing to completely remove deep blockages and posing a risk of liquid ingress or physical damage to the equipment due to improper cleaning. Therefore, there is an urgent need in existing technologies for an innovative solution that can effectively prevent, alleviate, or automatically handle earwax blockage through structural design. Utility Model Content

[0005] To address the shortcomings of the prior art, this utility model provides an ear cap structure, a hearing aid, and a hearing aid kit to solve the problem that the continuous accumulation of earwax in the prior art can severely block the acoustic channel, causing the sound output of the hearing aid to attenuate, distort, or even produce feedback, significantly reducing sound quality and gain effect, and affecting the user's listening experience.

[0006] The technical effects to be achieved by this utility model are realized through the following aspects: In a first aspect, this utility model provides an ear cap structure, comprising: The mounting body has a built-in sound transmission channel and a mounting port is provided at the first end of the mounting body. At least one protruding structure is provided at the second end of the mounting body, and the protruding structure is provided with a sound transmission hole, which is connected to the sound transmission channel. The cap body has one end connected to the second end of the mounting body, and the other end of the cap body extends away from the second end of the mounting body.

[0007] In some implementations, the protruding structure is a frustum structure with a diameter that gradually decreases along the sound transmission direction.

[0008] In some implementations, the diameter of the sound transmission hole gradually decreases along the sound transmission direction.

[0009] In some implementations, the sound transmission hole has a first inclined opening at the end away from the mounting body.

[0010] In some implementations, the protrusion structure includes a first protrusion and a second protrusion, wherein the first protrusion is arranged along the central axis of the mounting body, and a plurality of second protrusions are arranged around the outer periphery of the first protrusion.

[0011] In some implementations, the mounting opening is directly smaller than the sound transmission channel to form a limiting step inside the mounting body for engaging with the sound tube of the hearing aid.

[0012] In some implementations, a second inclined opening is provided on the side of the mounting port away from the sound transmission channel.

[0013] In some implementations, the length of the cap body in the opposite direction of sound transmission is longer than the length of the mounting body.

[0014] Secondly, this utility model provides a hearing aid, comprising: The ear cap structure described above; The hearing aid unit is equipped with a sound guide tube, which extends along the limiting cavity into the sound transmission channel so that the sound source of the hearing aid unit is transmitted outward from the sound transmission channel along the sound transmission hole of the ear cap structure.

[0015] Thirdly, this utility model provides a hearing aid kit, comprising: As mentioned above, hearing aids; The device includes a charging case with a receiving slot inside, where the hearing aid is placed and electrically connected to the charging case.

[0016] In summary, this utility model has at least the following advantages: The ear cap structure, hearing aid, and hearing aid kit provided by this utility model include a mounting body and a cap body. The mounting body has a built-in sound transmission channel and a mounting opening at its first end. At least one protruding structure with a sound transmission hole is provided at the second end of the mounting body, and the sound transmission hole communicates with the sound transmission channel. One end of the cap body is connected to the second end of the mounting body, and the other end of the cap body extends away from the second end of the mounting body. This utility model, by incorporating a built-in sound transmission channel in the mounting body and providing a protruding structure with a sound transmission hole, combined with the extended design of the cap body, effectively blocks earwax from entering the sound transmission channel through optimized sound transmission path structure, significantly improving anti-blockage performance, ensuring sound transmission quality, and extending the device's lifespan. Attached Figure Description

[0017] Figure 1 This is a first perspective view of the ear cap structure of Embodiment 1 of this utility model; Figure 2 This is a cross-sectional schematic diagram of the ear cap structure of Embodiment 1 of this utility model; Figure 3 This is a top view schematic diagram of the ear cap structure of Embodiment 1 of this utility model.

[0018] Marked in the image: 10. Main mounting body; 11. Sound transmission channel; 12. Mounting port; 13. Limiting step; 14. Second inclined opening; 20. Hat body; 30. Protruding structure; 31. First protrusion; 32. Second protrusion; 40. Sound transmission hole; 41. First inclined opening. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The described embodiments are some, but not all, of the embodiments of this utility model.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0021] Example 1: Please see the appendix Figure 1-3 To address the aforementioned problems, this utility model provides an embodiment of an ear cap structure, comprising a mounting body 10 and a cap body 20. The mounting body 10 has a built-in sound transmission channel 11 and a mounting opening 12 at its first end. At least one protruding structure 30 is provided at the second end of the mounting body 10, and the protruding structure 30 has a sound transmission hole 40 that communicates with the sound transmission channel 11. One end of the cap body 20 is connected to the second end of the mounting body 10, and the other end of the cap body 20 extends away from the second end of the mounting body 10.

[0022] In this embodiment, the mounting body 10 refers to the rigid support structure that supports the sound transmission channel 11. It can be injection molded from medical-grade silicone, and its internal cavity forms a stable sound wave conduction path. The sound transmission channel 11 refers to the acoustic pipe that runs through the mounting body 10. Specifically, it can be formed with a smooth inner wall through a molding process to ensure the continuity of sound wave conduction. The protruding structure 30 refers to the three-dimensional protrusion located at the outlet end of the sound transmission channel 11. It can adopt a gradient cross-section design to guide the direction of earwax sliding by changing the surface curvature. The sound transmission hole 40 refers to the acoustic opening that runs through the protruding structure 30. Specifically, it can be set with an inclined channel so that the opening direction forms an angle with the direction of gravity. The cap 20 refers to the flexible sealing component that wraps around the mounting body 10. It can be integrally molded from an elastic material and its length can be extended to adapt to different ear canal shapes.

[0023] Specifically, the mounting body 10 establishes an acoustic connection between the hearing aid unit and the ear canal through the internal sound transmission channel 11. The protruding structure 30 extends from the mounting end face to form a physical isolation layer, and its sound transmission hole 40 reduces the contact area of ​​ear canal secretions while maintaining sound wave transmission. The extended portion of the cap 20 forms an ear canal sealing structure, fixing the position of the ear cap while preventing external earwax from entering. The connection path between the sound transmission channel 11 and the sound transmission hole 40 forms a directional sound wave guide, avoiding earwax deposition caused by horizontal openings. The three-dimensional shape of the protruding structure 30 changes the traditional planar contact method, allowing secretions to slide away from the sound transmission hole 40 area along the structural surface under the action of gravity.

[0024] Compared with existing technologies, traditional ear caps have their sound transmission holes 40 directly exposed to the ear canal environment, with the opening plane parallel to the ear canal skin, forming a cerumen deposition platform. This design elevates the position of the sound transmission hole 40 through the raised structure 30, causing the opening direction to deviate from the normal direction of the deposition surface. Combined with the extended seal of the cap body 20, a three-dimensional protective system is formed. The continuous, through-flow design of the sound transmission channel 11 avoids the stepped deposition surface formed by traditional multi-stage sound transmission structures, reducing the probability of cerumen retention.

[0025] Through the above technical solution, this utility model effectively reduces the probability of earwax entering the sound transmission path and reduces the risk of acoustic channel blockage. The three-dimensional layout of the sound transmission hole 40 allows secretions to detach naturally under gravity, avoiding the formation of a stable deposit layer. The extended design of the cap 20 ensures wearing stability while forming a physical isolation barrier. The continuous structure of the sound transmission channel 11 maintains sound wave transmission efficiency, ensuring that the hearing aid's sound quality is not affected by structural changes. This solution alleviates the earwax accumulation problem at its root, extends the device maintenance cycle, and improves the user experience.

[0026] In some implementations, the protruding structure 30 is a frustum structure with a diameter that gradually decreases along the sound transmission direction.

[0027] In this embodiment of the invention, the frustum structure refers to a three-dimensional geometric body with a circular base and a diameter that continuously varies along the axial direction. Specifically, it can be implemented as a conical structure with a base diameter that gradually decreases from the end closer to the mounting body 10 to the end farther away from the mounting body 10. The sound transmission direction refers to the path direction in which sound waves travel from the inside of the mounting body 10 through the sound transmission hole 40 to the outside. Specifically, it can be implemented as a straight line direction that coincides with the central axis of the mounting body 10.

[0028] Specifically, the protruding structure 30 is constructed in the shape of a frustum, with its diameter gradually decreasing from the end closest to the mounting body 10 to the end furthest from the mounting body 10. Because the sidewalls of the frustum structure have inclined surfaces, when earwax particles come into contact with these surfaces, their trajectory is guided by the inclined surfaces and they slide outwards, thereby reducing the probability of them lingering around the sound transmission hole 40. The sound transmission hole 40 is located at the end of the frustum structure. Sound waves are transmitted outwards through the internal cavity of the frustum, while earwax particles slide away from the area of ​​the sound transmission hole 40 along the inclined sidewalls under the influence of gravity or external forces.

[0029] Through the above technical solution, this utility model effectively reduces the risk of earwax buildup around the sound transmission hole 40, and achieves a passive anti-clogging function through geometric optimization. It maintains the unobstructed acoustic channel without increasing the cleaning frequency or adding a filter device, thereby extending the life of the hearing aid and reducing the sound quality degradation caused by earwax intrusion.

[0030] In some implementations, the diameter of the sound transmission hole 40 gradually decreases along the sound transmission direction.

[0031] In this embodiment of the invention, the sound transmission direction refers to the path of sound transmission from the hearing aid main unit through the sound transmission channel 11 to the ear canal. Specifically, it can be achieved by using a tapered channel or a stepped diameter reduction structure, forming a guiding path for sound wave transmission through the gradual change in aperture. The gradual reduction in diameter means that the inner wall contour of the sound transmission hole 40 has a continuous or segmented converging shape, for example, by forming a tapered channel with a linearly decreasing inner diameter through injection molding, thereby forming a self-cleaning flow channel structure during sound wave transmission.

[0032] Specifically, the inlet diameter of the sound transmission hole 40 is larger, while the outlet diameter is smaller. When sound waves carrying cerumen particles pass through, the narrowing of the hole diameter forces the particles to gradually deviate from the channel axis during their movement. Due to the hydrodynamic effect caused by the change in hole diameter, the particles experience a rebound force towards the inlet when they contact the hole wall, thereby reducing their probability of retention within the channel. Simultaneously, the change in the propagation speed of the sound waves within the conical channel creates a pressure gradient, further inhibiting the migration of particles towards the outlet.

[0033] Through the above technical solution, this utility model effectively prevents the deposition of earwax inside the sound transmission hole 40, avoiding acoustic performance degradation caused by complete blockage of the hole. Particulate matter is confined to the entrance area of ​​the sound transmission hole 40, facilitating removal through routine cleaning operations, while maintaining the unobstructed sound wave transmission path, ensuring the stability and clarity of the hearing aid's output sound.

[0034] In some implementations, the sound transmission hole 40 has a first inclined opening 41 at the end away from the mounting body 10.

[0035] In this embodiment of the utility model, the sound transmission hole 40 refers to the channel disposed inside the protruding structure 30 and connected to the sound transmission channel 11. Specifically, it can be implemented by adopting a cylindrical or conical channel structure, and is used to directionally transmit the sound waves in the sound transmission channel 11 to the inside of the ear canal.

[0036] The first inclined opening 41 refers to the non-vertical plane opening formed at the end of the sound transmission hole 40. Specifically, it can be achieved by using an inclined or conical flared structure. By changing the direction of the opening, the sound wave propagation path deviates from the vertical direction, and a physical barrier is formed to prevent earwax from entering the sound transmission hole 40.

[0037] Specifically, the first inclined opening 41 at the end of the sound transmission hole 40 is configured to form an angle with the axis of the sound transmission hole 40, so that the sound waves diffuse along the inclined direction during transmission. When the earwax in the ear canal moves towards the sound transmission hole 40 due to gravity or external force, the inclined surface formed by the inclined opening can guide the earwax to slide down along the outer wall of the opening, preventing it from directly entering the interior of the sound transmission hole 40. The continuous through structure of the sound transmission hole 40 and the inclined opening ensures the efficiency of sound wave transmission while actively intervening in the movement trajectory of the earwax by changing the geometry of the opening.

[0038] Through the above technical solution, this utility model effectively reduces the amount of earwax deposited at the opening of the sound transmission hole 40, avoids the problem of acoustic channel blockage caused by earwax accumulation, maintains the integrity of the sound transmission path, extends the hearing aid maintenance cycle and reduces the difficulty of cleaning.

[0039] In some implementations, the protrusion structure 30 includes a first protrusion 31 and a second protrusion 32. The first protrusion 31 is arranged along the central axis of the mounting body 10, and a plurality of second protrusions 32 are arranged around the outer periphery of the first protrusion 31.

[0040] In this embodiment of the invention, the first protrusion 31 refers to a columnar or conical structure extending along the central axis of the mounting body 10, specifically a cylinder or a frustum, used to form the main sound transmission path and guide the concentrated transmission of sound waves. The second protrusion 32 refers to multiple independent protrusions distributed around the first protrusion 31, specifically short columns or cones in a ring array, used to form a protective barrier around the sound transmission hole 40 and disperse the risk of earwax accumulation.

[0041] Specifically, a first protrusion 31 is positioned at the central axis of the second end of the mounting body 10. Its sound transmission hole 40 extends along the axis and connects to the sound transmission channel 11, ensuring efficient sound wave transmission. Multiple second protrusions 32 are distributed in a ring array outside the first protrusion 31. Each second protrusion 32 has an independent sound transmission hole 40 inside, allowing sound waves to be transmitted through multiple channels. When earwax contacts the protrusion structure 30, the central axis design of the first protrusion 31 preferentially guides the earwax to slide radially, while the surrounding second protrusions 32 form multi-level barriers through spatial separation, preventing earwax from directly covering the main sound transmission hole 40. Simultaneously, the dispersed layout of the second protrusions 32 forms a physical isolation area around the sound transmission hole 40, reducing the probability of earwax completely blocking the sound transmission channel 11.

[0042] Through the above technical solution, this utility model effectively reduces the risk of the sound transmission hole 40 being completely covered by earwax, ensures the redundancy of multi-channel sound wave transmission, and extends the ear cap cleaning and maintenance cycle. The synergistic effect of the main protrusion and the peripheral protrusion forms a dynamic protection mechanism, which guides and disperses the accumulation direction of earwax in the early stage of contact, maintaining the long-term unobstructedness of the sound transmission channel 11.

[0043] In some implementations, the ear cap structure includes a mounting body 10 and a cap body 20. The mounting body 10 has a built-in sound transmission channel 11. The first end of the mounting body 10 is provided with a mounting port 12, and the second end is provided with a protruding structure 30. The cap body 20 is connected to the mounting body 10. The diameter of the mounting port 12 is smaller than the diameter of the sound transmission channel 11, so as to form a limiting step 13 on the inner side of the mounting body 10 for engaging with the sound tube of the hearing aid.

[0044] In this embodiment of the invention, the diameter of the mounting port 12 being smaller than the diameter of the sound transmission channel 11 means that the inner diameter of the mounting port 12 is smaller than the inner diameter of the sound transmission channel 11. This can be achieved through a stepped structure design, creating a vertical abrupt change in size between the mounting port 12 and the sound transmission channel 11. The limiting step 13 refers to the annular flange structure formed by the difference in diameter between the mounting port 12 and the sound transmission channel 11. Specifically, it can be formed as a continuous annular protrusion on the inner wall of the mounting body 10 using an injection molding process, which is used to physically limit the insertion depth of the sound guide tube.

[0045] Specifically, the mounting body 10 adopts a hollow tubular structure. The inner diameter of the mounting port 12 at its first end is designed to be smaller than the inner diameter of the sound transmission channel 11, and an annular limiting step 13 is formed at the junction of the two. When the hearing aid's sound tube is inserted into the mounting port 12, the outer wall of the sound tube contacts the inner wall of the mounting port 12 and advances axially until the end of the sound tube abuts the annular end face of the limiting step 13. The dimensional fit between the outer diameter of the sound tube and the inner diameter of the mounting port 12 is configured as an interference fit or a clearance fit, and the axial height of the limiting step 13 is set to prevent the sound tube from moving further into the sound transmission channel 11. Thus, the sound tube is stably fixed inside the mounting port 12, and the contact surface between its end and the limiting step 13 forms an acoustic sealing interface, preventing sound waves from leaking from the gap between the sound tube and the mounting port 12.

[0046] Through the above technical solution, this utility model can effectively prevent the sound tube from moving axially inside the ear cap, reducing the risk of acoustic performance degradation caused by loose connections. The tight fit between the sound tube and the limiting step 13 blocks the path of earwax migration along the inner wall of the mounting opening 12 to the sound transmission channel 11, reducing the possibility of foreign objects entering the acoustic path, thereby extending the service life of the internal components of the hearing aid.

[0047] In some implementations, a second inclined opening 14 is provided on the side of the mounting port 12 away from the sound transmission channel 11.

[0048] In this embodiment of the invention, the mounting port 12 refers to the inlet structure for connecting the hearing aid's sound tube. Specifically, it can be implemented using a ring-shaped or tubular structure, with its dimensions adapted to the outer diameter of the sound tube for a tight fit, thereby ensuring the sealing of the acoustic channel and preventing detachment. The second inclined opening 14 refers to a sloping structure located at the outer edge of the mounting port 12 and extending in the opposite direction to the sound transmission channel 11. Specifically, it can be implemented using a tapered transition or a stepped sloping design. The sloping angle guides the sound tube to be inserted in a specific direction, thereby reducing installation resistance and minimizing frictional damage.

[0049] Specifically, the outer edge of the mounting port 12 is designed as an angled opening structure, with the angled surface extending away from the sound transmission channel 11. When the sound guide tube is inserted into the mounting port 12, the slope of the second angled opening 14 guides the sound guide tube to slide in along a preset path, avoiding a hard collision between the tube and the edge of the mounting port 12 due to installation angle deviation. At the same time, the geometry of the angled opening can form a flow guiding space, allowing external earwax or foreign objects to slide down the slope under gravity or vibration, preventing them from accumulating and causing blockage at the edge of the mounting port 12.

[0050] Through the above technical solution, this utility model effectively solves the problem of sound tube blockage caused by cerumen accumulation in the ear cap installation port 12 of the hearing aid. The inclined structure guides foreign objects away from the contact area, ensuring that the acoustic channel is unobstructed for a long time. At the same time, it reduces mechanical wear during the installation process of the sound tube and extends the connection stability between the ear cap and the hearing aid main unit.

[0051] In some implementations, the length of the cap 20 in the opposite direction of sound transmission is longer than the length of the mounting body 10.

[0052] In this embodiment of the invention, the length of the cap 20 in the opposite direction of sound transmission refers to the longitudinal dimension of the cap 20 extending from its connection with the mounting body 10 into the ear canal. Specifically, it can be integrally molded using flexible silicone material, forming a physical isolation barrier by extending the area of ​​the cap 20 covering the ear canal. The length of the mounting body 10 refers to the axial dimension of the mounting body 10 from the first end to the second end, specifically achieved by injection molding using rigid plastic. The structural layout is optimized by shortening the space occupied by the mounting body 10 within the ear canal.

[0053] Specifically, the longitudinal dimension of the cap 20 extending deep into the ear canal exceeds the axial length of the mounting body 10, creating a continuous coverage area between the outer surface of the cap 20 and the skin of the ear canal. This extension forms a trumpet-shaped expansion structure within the ear canal, with its end contacting the physiological structures at the bend of the ear canal, thereby forming a physical isolation layer on the outside of the sound transmission channel 11. The reverse extension design in the direction of sound transmission creates a hook-shaped structure at the end of the cap 20, generating a contact pressure gradient within the ear canal. Furthermore, the sound wave vibrations generated by the sound transmission channel 11 reduce the probability of earwax adhesion through the damping effect of the flexible material of the cap 20.

[0054] Through the above technical solution, this utility model effectively blocks the migration path of ear canal secretions into the sound transmission channel 11, reduces the probability of earwax adhering and accumulating on the surface of the sound transmission hole 40, reduces the acoustic channel blockage caused by earwax hardening, and maintains the sound conduction efficiency of the hearing aid. The extended structure of the flexible material generates uniform contact pressure when worn, avoiding ear canal discomfort caused by local pressure and extending the user's continuous wearing time.

[0055] Example 2: Based on Embodiment 1, this utility model provides an embodiment of a hearing aid, which includes an ear cap structure as described in Embodiment 1 and a hearing aid main unit. The hearing aid main unit is provided with a sound guide tube, which extends along the limiting cavity into the sound transmission channel so that the sound source of the hearing aid main unit is transmitted outward from the sound transmission channel along the sound transmission hole of the ear cap structure.

[0056] In this embodiment of the invention, the sound guide tube refers to the acoustic channel connecting the hearing aid main unit and the ear cap structure. Specifically, it can be implemented using a flexible silicone tube or a rigid plastic tube to ensure the sealing and directionality of the sound transmission path. The limiting cavity refers to the chamber structure within the ear cap structure used to fix the position of the sound guide tube. Specifically, it can be implemented using an annular groove or a snap-fit ​​structure to prevent the sound guide tube from shifting or falling off during use. The sound transmission channel refers to the sound wave conduction space inside the ear cap that connects the sound guide tube and the sound outlet. Specifically, it can be implemented using a conical cavity or a cylindrical cavity to optimize the continuity of the sound wave propagation path. The sound outlet refers to the opening in the ear cap structure where the sound is finally transmitted to the ear canal. Specifically, it can be implemented using a porous mesh structure or a tapered opening to control the diffusion angle of the sound output and prevent the entry of external foreign objects.

[0057] Specifically, the sound guide tube is precisely fixed within the limiting cavity, with its end extending to a predetermined position in the sound transmission channel. This allows sound waves generated by the hearing aid unit to be directly introduced into the sound transmission channel through the sound guide tube. The geometry of the sound transmission channel is optimized, for example, by using a tapered inner wall to reduce sound wave reflection and improve sound transmission efficiency. The sound outlet is located at the end of the sound transmission channel. Through aperture control and the coordination of the tapered opening, a physical barrier is formed to prevent foreign objects such as earwax from entering the sound transmission channel in reverse, while ensuring clear sound output.

[0058] In some specific embodiments, an elastic sealing ring, such as medical-grade silicone, can be provided at the connection between the sound guide tube and the limiting cavity to enhance airtightness and absorb mechanical vibration. The inner wall of the sound transmission channel can be covered with an oleophobic coating, such as a fluoropolymer coating, to further reduce the probability of earwax adhesion. The diameter of the tapered opening at the sound outlet can be set to 0.5 mm to 1.2 mm, for example, 0.8 mm, to ensure sound pressure output while restricting the entry of foreign objects.

[0059] Through the above technical solution, this utility model solves the problem of decreased acoustic performance of traditional hearing aids caused by displacement of the sound tube. At the same time, through the coordinated design of the sound transmission channel and the sound outlet, multiple anti-blockage mechanisms are formed on the basis of maintaining sound transmission efficiency, reducing equipment failures caused by cerumen accumulation, extending the service life of hearing aids and reducing maintenance frequency.

[0060] Example 3: Based on Embodiment 1, this utility model provides an embodiment of a hearing aid kit, which includes a hearing aid as described in Embodiment 2 and a charging case. The charging case has a receiving slot, and the hearing aid is placed in the receiving slot and electrically connected to the charging case.

[0061] In this embodiment of the invention, the receiving slot refers to a recessed space that matches the shape of the hearing aid. It can be specifically achieved using injection molding, and its inner wall can be equipped with a guide structure to achieve precise positioning of the hearing aid. This structure is used to fix the hearing aid and prevent it from shaking within the charging case, thereby avoiding poor contact or mechanical damage caused by displacement. Electrical connection refers to energy transfer through metal contacts or a wireless charging module, specifically using magnetic contacts or an electromagnetic induction coil. This connection method ensures that the hearing aid automatically completes charging when stored, reducing manual operation steps for the user and avoiding interface wear caused by frequent plugging and unplugging.

[0062] Specifically, the hearing aid kit utilizes a customizable housing design to ensure the hearing aid is stably seated within the slot and continuously powered via electrical connection. When the hearing aid is placed in the charging case, the guide structure of the housing guides it to a preset position. At this point, the contacts or coil within the charging case automatically align with the corresponding interface on the hearing aid and establish a connection, thus completing the charging process. This solution not only addresses the stability issue during daily storage of hearing aids but also reduces the risk of equipment damage due to human error through an automated charging mechanism.

[0063] Through the above technical solution, this utility model can effectively improve the stability of hearing aid storage and the reliability of charging, reduce the probability of equipment failure caused by improper storage or poor contact, reduce the user's daily maintenance workload, and extend the service life of hearing aids.

[0064] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0065] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0066] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0067] In this invention, unless otherwise expressly specified and limited, "above or below" the first feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on" the first feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the first feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0068] Although the description of this utility model has been given in conjunction with the specific embodiments described above, it is obvious to those skilled in the art that many substitutions, modifications, and variations can be made based on the above description. Therefore, all such substitutions, modifications, and variations are included within the spirit and scope of the appended claims.

Claims

1. An ear cap structure, characterized in that, include: The mounting body (10) has a built-in sound transmission channel (11) and a mounting port (12) is provided at the first end of the mounting body (10). At least one protruding structure (30) is provided at the second end of the mounting body (10), and the protruding structure (30) is provided with a sound transmission hole (40). The sound transmission hole (40) is connected to the sound transmission channel (11). And a cap body (20), one end of which is connected to the second end of the mounting body (10), and the other end of the cap body (20) extends away from the second end of the mounting body (10).

2. The ear cap structure according to claim 1, characterized in that, The protruding structure (30) is a frustum structure with a diameter that gradually decreases along the sound transmission direction.

3. The ear cap structure according to claim 2, characterized in that, The diameter of the sound transmission hole (40) gradually decreases along the sound transmission direction.

4. The ear cap structure according to claim 2, characterized in that, The sound transmission hole (40) has a first inclined opening (41) at the end away from the mounting body (10).

5. The ear cap structure according to claim 2, characterized in that, The protrusion structure (30) includes a first protrusion (31) and a second protrusion (32). The first protrusion (31) is arranged along the central axis of the mounting body (10), and a plurality of second protrusions (32) are arranged around the outer periphery of the first protrusion (31).

6. The ear cap structure according to claim 1, characterized in that, The mounting port (12) is directly smaller than the sound transmission channel (11) to form a limiting step (13) inside the mounting body (10) for engaging with the sound tube of the hearing aid.

7. The ear cap structure according to claim 6, characterized in that, A second inclined opening (14) is provided on the side of the mounting port (12) away from the sound transmission channel (11).

8. The ear cap structure according to claim 1, characterized in that, The length of the cap (20) in the opposite direction of sound transmission is longer than the length of the mounting body (10).

9. A hearing aid, characterized in that, include: The ear cap structure as described in any one of claims 1-8; The hearing aid unit is equipped with a sound guide tube, which extends along the limiting cavity into the sound transmission channel so that the sound source of the hearing aid unit is transmitted outward from the sound transmission channel along the sound transmission hole of the ear cap structure.

10. A hearing aid kit, characterized in that, include: The hearing aid as described in any one of claims 9; The device includes a charging case with a receiving slot inside, where the hearing aid is placed and electrically connected to the charging case.

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