Earplug and hearing device

Abstract

The utility model provides an earplug and auditory equipment, and relates to the technical field of acoustic equipment. The earplug comprises an earplug main body and a mounting part arranged on the inner side of the earplug main body, the mounting part comprises a first part and a second part which are connected, one end, far away from the second part, of the first part is connected with the earplug main body, and the second part is provided with a high-frequency absorption channel and a discharge port communicated with the high-frequency absorption channel and the outside; the installation part is provided with a sound outlet channel and a leakage channel which are spaced, one end of the leakage channel penetrates to the first end face, away from the second part, of the first part to form a first leakage hole, and the other end of the leakage channel penetrates to the high-frequency absorption channel to form a second leakage hole. Ventilation can be achieved through the leakage channel, low-frequency energy is leaked, meanwhile, high-frequency energy is absorbed through the high-frequency absorption channel in the leakage process, the high-frequency energy is prevented from being leaked out, and the wearing comfort of the earplug and the acoustic performance of auditory equipment can be improved.

Description

Technical Field

[0001] This application relates to the field of acoustic equipment technology, and in particular to an earplug and hearing device. Background Technology

[0002] Some earplugs have a sealed outer surface that contacts the ear canal, designed to block the ear canal during wear, which can easily lead to poor wearer comfort. To improve comfort, some earplugs have vents; however, earplugs with vents have poor isolation, potentially affecting the acoustic performance of the hearing device. For example, hearing aids using earplugs with vents are prone to feedback (feedback) during use, which is detrimental to the hearing aid's sound gain. Utility Model Content

[0003] This application provides an earplug for installation on a sound-generating device, the earplug comprising:

[0004] The earplug body is used to contact the ear canal;

[0005] The mounting part is located inside the earbud body. The mounting part includes a first part and a second part connected to each other. The end of the first part away from the second part is connected to the earbud body. The second part is provided with a high-frequency absorption channel and a leakage outlet that connects the high-frequency absorption channel to the outside.

[0006] The end face of the first part away from the second part is called the first end face, and the end face of the second part away from the first part is called the second end face. The mounting part is provided with a sound outlet channel and a leakage channel. The sound outlet channel is used to transmit the sound emitted by the sound-generating device to the ear canal. The leakage channel is spaced apart from the sound outlet channel. One end of the leakage channel extends through to the first end face and forms a first leakage hole on the first end face. The other end of the leakage channel extends through to the high-frequency absorption channel and forms a second leakage hole on the wall of the high-frequency absorption channel.

[0007] This application also provides an auditory device, which includes a sound-generating device and the aforementioned earplug.

[0008] The beneficial effects of the earplug provided in this application, which differ from existing technologies, are:

[0009] This application provides an earplug with spaced-out sound outlet and leakage outlet on its mounting portion, with one end of the leakage outlet extending to the first end face of the first part of the mounting portion to form a first leakage hole. This allows the earplug to leak low-frequency energy and allow for ventilation when installed in a sound-generating device, thereby improving the earplug's wearing comfort and enhancing the gain for high-frequency sounds, thus improving the acoustic performance of the hearing device to which the earplug is used. Furthermore, this application provides a high-frequency absorption channel and a leakage outlet connected to it in the second part of the mounting portion, with the other end of the leakage outlet extending to the high-frequency absorption channel to form a second leakage hole on its wall. This allows the airflow and low-frequency energy leaking from the leakage channel through the second leakage hole to enter the high-frequency absorption channel and exit through the leakage outlet. The high-frequency energy is absorbed by the high-frequency absorption channel during this leakage process, preventing further leakage and thus improving the acoustic performance of the hearing device. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the embodiments will be briefly described below. Obviously, the drawings described below are merely some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0011] Figure 1 This is a three-dimensional structural schematic diagram of an earplug provided in some embodiments of this application;

[0012] Figure 2 yes Figure 1 A three-dimensional structural diagram of the earplug in the embodiment from another perspective;

[0013] Figure 3 This is a cross-sectional structural schematic diagram of an auditory device provided in some embodiments of this application;

[0014] Figure 4 This is an acoustic analog circuit diagram of a hearing device in a wearing state provided in some embodiments of this application;

[0015] Figure 5 This is a cross-sectional structural schematic diagram of an auditory device provided in some other embodiments of this application;

[0016] Figure 6 This is a cross-sectional structural schematic diagram of an auditory device provided in some other embodiments of this application. Detailed Implementation

[0017] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application may also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted so as not to obscure the description of this application with unnecessary detail.

[0018] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0019] This application provides an earplug and an auditory device. The earplug can be used with auditory devices, including but not limited to hearing aids, headphones, etc. Please refer to... Figure 1 and Figure 2 , Figure 1 This is a three-dimensional structural diagram of an earplug provided in some embodiments of this application. Figure 2 yes Figure 1 A three-dimensional structural diagram of the earplug in the embodiment from another perspective.

[0020] In some embodiments, the earplug 10 includes an earplug body 100 for contacting the ear canal. The earplug body 100 includes an outer surface 110 and an inner surface 120 facing away from each other. The outer surface 110 is for contacting the ear canal. In other words, the outer surface 110 is the side of the earplug body 100 that faces the ear when worn. The inner surface 120 can be used to connect other devices, such as vibrating devices, electroacoustic transducers, etc.

[0021] The earbud 10 also includes a mounting portion 200, which is disposed on the inner side of the earbud body 100. The inner side of the earbud body 100 is the inner perimeter side of the earbud body 100, that is, the middle region of the earbud body 100. Correspondingly, the outer side of the earbud body 100 is the outer perimeter side of the earbud body 100. The mounting portion 200 is connected to the earbud body 100, and the connection method may be, but is not limited to, integral molding.

[0022] The mounting portion 200 includes a first portion 210 and a second portion 220 connected to each other. The end of the first portion 210 away from the second portion 220 is connected to the earbud body 100. The end face of the first portion 210 away from the second portion 220 is a first end face 230. The first end face 230 may be coplanar with the outer surface 110 of the earbud body 100. The end face of the second portion 220 away from the first portion is a second end face 240. The mounting portion 200 also has an outer peripheral surface 250, which includes the outer peripheral surface of the first portion 210 and the outer peripheral surface of the second portion 220. The outer peripheral surface 250 is connected between the first end face 230 and the second end face 240, and the end of the outer peripheral surface 250 near the first end face 230 may be connected to the inner surface 120 of the earbud body 100. It is understood that the term "end" should be considered to include both the portion forming the end face and the portion near the end face.

[0023] The first end face 230 may be provided with a sound outlet 101 and a first leakage hole 201. The second end face 240 may be provided with a mounting hole 102 and a second leakage hole 202. The sound outlet 101 communicates with the mounting hole 102, wherein the mounting hole 102 is used to install a sound-generating device, and the sound outlet 101 is used to transmit sound. The first leakage hole 201 communicates with the second leakage hole 202 to cooperate in achieving air permeability and leaking low-frequency vibrations.

[0024] The area of ​​the first leakage hole 201 can be smaller than the area of ​​the sound outlet hole 101, and the area of ​​the second leakage hole 202 can be smaller than the area of ​​the mounting hole 102. Optionally, the sound outlet hole 101, the mounting hole 102, the first leakage hole 201, and the second leakage hole 202 are all circular holes, with the diameter of the first leakage hole 201 being smaller than the diameter of the sound outlet hole 101, and the diameter of the second leakage hole 202 being smaller than the diameter of the mounting hole 102.

[0025] It should be understood that the terms "comprising" and "having," and any variations thereof, used in this application and the appended claims, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the steps or units listed, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to such process, method, product, or apparatus.

[0026] In some embodiments, the earplug body 100 may include a first body portion 130 and a second body portion 140, the first body portion 130 and the second body portion 140 being connected and cooperating to form an outer surface 110 and an inner surface 120. The first body portion 130 and the second body portion 140 may be an integrally formed structure. The first body portion 130 is connected to a first portion 210. The first body portion 130 is the portion of the earplug 10 facing the ear canal opening. The second body portion 140 extends from the periphery of the first body portion 130. The second body portion 140 may be arc-shaped and serve as a skirt structure for the first body portion 130. The second body portion 140 is used to fill and seal the periphery of the ear canal opening to improve the tightness of the earplug 10 in the ear canal. The second body portion 140 may surround the mounting portion 200. The mounting portion 200 may be a cylindrical structure, such as a cylinder.

[0027] The outer surface 110 and inner surface 120 of the first main body 130 can both be planar. The outer surface 110 of the first main body 130 can be coplanar with the first end face 230, and the inner surface 120 of the first main body 130 can be connected to the outer peripheral surface 250. The other outer surface 110 and the other inner surface 120 of the second main body 140 can both be curved surfaces.

[0028] Understandably, all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0029] Please see Figures 1 to 3 , Figure 3 This is a cross-sectional structural schematic diagram of an auditory device provided in some embodiments of this application. The auditory device 1000 can be worn on a user's ear. The auditory device 1000 includes an earplug 10 and a sound-generating device 20. The earplug 10 can be installed in the sound-generating device 20. The sound-generating device 20 includes a sound-generating part 21. The sound-generating part 21 can be inserted into the mounting hole 102 of the earplug 10. The specific sound-generating device 20 can be selected according to the applicable field of the auditory device 1000. Taking the auditory device 1000 as a hearing aid as an example, the sound-generating device 20 can be a receiver. A hearing aid is a wearable electroacoustic device used to compensate for hearing loss. Generally, it uses a receiver for acoustic amplification and is tightly coupled to the ear. The receiver is used to receive electrical signals and generate vibrations to radiate sound.

[0030] In some embodiments, the mounting portion 200 is provided with a sound outlet channel 203. The sound outlet channel 203 is used to transmit the sound emitted by the sound-emitting device 20 to the ear canal. The sound outlet channel 203 can be used to mount the sound-emitting part 21; in other words, the sound-emitting part 21 can be mounted inside the sound outlet channel 203. One end of the sound outlet channel 203 can extend to a first end face 210, and a sound outlet hole 101 is formed on the first end face 210. The other end of the sound outlet channel 203 can extend to a second end face 240, and a mounting hole 102 is formed on the second end face 240. The sound-emitting part 21 can be inserted into the sound outlet channel 203 through the mounting hole 102, so that the sound emitted by the sound-emitting part 21 can be output from the sound outlet hole 101 through the sound outlet channel 203.

[0031] The mounting section 200 is also provided with a leakage channel 204. The leakage channel 204 is spaced apart from the sound output channel 203. One end of the leakage channel 204 can extend to the first end face 210, and a first leakage hole 201 is formed on the first end face 210. The first leakage hole 201 can guide the airflow generated when the hearing device 1000 is worn and the vibration energy generated when the hearing device 1000 emits sound into the leakage channel 204.

[0032] The second part 220 of the mounting section 200 may be provided with a high-frequency absorption channel 205 and a leakage outlet 206. The leakage outlet 206 may connect the high-frequency absorption channel 205 to the outside. The other end of the leakage channel 204 may extend into the high-frequency absorption channel 205, and a second leakage hole 202 may be formed on the wall of the high-frequency absorption channel 205. The airflow and vibration energy in the leakage channel 204 may be guided to the high-frequency absorption channel 205 through the second leakage hole 202, and the low-frequency energy in the airflow and vibration energy may be guided to the outside through the leakage outlet 206, while the high-frequency energy in the vibration energy may be at least partially retained in the high-frequency absorption channel 205.

[0033] Through the above design, when the earplug 10 of this application embodiment is installed on the sound-generating device 20, its leakage channel 204 can cooperate with the high-frequency absorption channel 205 and the outlet 206 to leak low-frequency energy and achieve ventilation. At the same time, its high-frequency absorption channel 205 can reduce the leakage of high-frequency energy, thereby improving the wearing comfort of the earplug 10 and increasing the gain of high-frequency sound, thereby improving the acoustic performance of the hearing device 1000 to which the earplug 10 is used.

[0034] Optionally, a high-frequency absorption channel 205 is disposed on a second end face 240. A groove may be provided on the second end face 240, forming the high-frequency absorption channel 205. A second leakage hole 202 may be formed on the groove wall. A leakage outlet 206 may be disposed on the outer peripheral surface 250 of the mounting portion 200. The mounting hole 102 is located outside the high-frequency absorption channel 205.

[0035] The sound-generating device 20 may include a sound-generating part 21 and a housing 22, with the sound-generating part 21 protruding from the housing 22. When the earplug 10 is installed on the sound-generating device 20, the housing 22 may contact the second end face 240. When the housing 22 contacts the second end face 240, the housing 22 may cover the opening of the high-frequency absorption channel 205, i.e., the groove of the recess on the second end face 240, and form a high-frequency absorption cavity 207 that connects the second leakage hole 202 and the leakage outlet 206.

[0036] Understandably, the high-frequency absorption channel 205 is a groove provided on the second end face 240. Due to the height difference between its groove wall surface and the second end face 240, when the earplug 10 is installed on the sound-generating device 20 and the outer shell 22 contacts the second end face 240, the high-frequency absorption channel 205 can be used to form a cavity, namely a high-frequency absorption cavity 207. The high-frequency absorption cavity 207 can be formed by the portion of the outer shell 22 exposed to the high-frequency absorption channel 205 and the groove wall of the high-frequency absorption channel 205.

[0037] In this embodiment, a high-frequency absorption channel 205 is provided on the second end face 240 of the mounting part 200, and one end of the leakage channel 204 is extended to the high-frequency absorption channel 205 to form a second leakage hole 202 on its groove wall. An outlet 206 communicating with the high-frequency absorption channel 205 is provided on the outer peripheral surface 250 of the mounting part 200. This allows the high-frequency absorption channel 205 to cooperate with the housing 22 of the sound-generating device 20 to form a high-frequency absorption cavity 207 when the housing 22 contacts the second end face 240. Thus, the airflow and low-frequency energy leaking from the leakage channel 204 through the second leakage hole 202 can enter the high-frequency absorption cavity 207 and leak out through the outlet 206. The high-frequency absorption cavity 207 absorbs high-frequency energy during this leakage process, thereby improving the acoustic performance of the hearing device 1000 and reducing feedback. It should be noted that low-frequency energy in this text can be understood as low-frequency vibration energy, and high-frequency energy can be understood as high-frequency vibration energy.

[0038] In this embodiment, the high-frequency absorption channel 205 can extend circumferentially along the mounting portion 200. For example, in the above embodiment, the high-frequency absorption channel 205 can be a strip-shaped groove provided on the second end face 240, and its shape is, for example, but not limited to, arc-shaped, rectangular, serpentine, etc. The size of the high-frequency absorption channel 205 of the earplug 10 determines the size of the high-frequency absorption cavity 207 of the hearing device 1000, which in turn affects the acoustic performance of the hearing device 1000. By designing the high-frequency absorption channel 205 as a strip-shaped groove, this embodiment can maximize the space of the high-frequency absorption channel 205 without enlarging the second end face 240, thereby improving the absorption capacity of the high-frequency absorption cavity 207 for high-frequency energy and improving the acoustic performance of the hearing device 1000.

[0039] Optionally, the high-frequency absorption channel 205 is annular. For example, the high-frequency absorption channel 205 can be a strip-shaped groove connected end to end on the second end face 240, i.e., an annular groove. The high-frequency absorption channel 205 can be... Figure 2 The circular ring shown can also be other types of rings, such as elliptical rings, square rings, etc.

[0040] Optionally, the mounting hole 102 is disposed within the inner periphery of the high-frequency absorption channel 205 and spaced apart from the high-frequency absorption channel 205. The second end face 240 may include an outer edge 211 and an inner edge 212. The outer edge 211 is located on the periphery of the high-frequency absorption channel 205. The inner edge 212 is located within the inner periphery of the high-frequency absorption channel 205 and surrounds the mounting hole 102. When the sound-emitting part 21 is inserted into the mounting hole 102, the outer shell 22 can contact the outer edge 211 and the inner edge 212 and is spaced apart from the groove wall of the high-frequency absorption channel 205. In other embodiments, the high-frequency absorption channel 205 may also be a non-strip groove, such as a square groove, a circular groove, etc.

[0041] In some embodiments, the mounting portion 200 may be provided with multiple leakage channels 204. The multiple leakage channels 204 may be spaced apart along the outer periphery of the sound output channel 203. Specifically, the multiple leakage channels 204 are located on the periphery of the sound output channel 203 and are arranged around the sound output channel 203. The multiple leakage channels 204 may extend to different regions of the high-frequency absorption channel 205 and form second leakage holes 202 on the groove wall of the high-frequency absorption channel 205. All of the multiple second leakage holes 202 communicate with the high-frequency absorption channel 205.

[0042] Each leakage channel 204 has two ends that can penetrate to the walls of the first end face 230 and the high-frequency absorption channel 205, forming a first leakage hole 201 and a second leakage hole 202. Figure 1 As shown, multiple first leakage holes 201 can be arranged around the sound outlet 101. Figure 2 As shown, multiple second leakage holes 202 can be arranged around the mounting hole 102. Both the sound outlet channel 203 and the leakage channel 204 can be as follows: Figure 3 The cylindrical channel is shown. In other embodiments, the sound output channel 203 and the leakage channel 204 can also be channels of other shapes, such as curved channels.

[0043] In this embodiment, multiple second leakage holes 202 are arranged on the wall of the same high-frequency absorption channel 205, so that the airflow and vibration energy discharged from multiple leakage channels 204 can be gathered into the same high-frequency absorption cavity 207. Most of the high-frequency energy will be attenuated in the high-frequency absorption cavity 207, thereby avoiding insufficient high-frequency energy gain of the hearing device 1000 that would cause feedback; the airflow and low-frequency energy will be discharged through the vent 206, thereby reducing the occlusion effect and improving the wearing comfort of the hearing device 1000.

[0044] In this embodiment, the number of high-frequency absorption channels 205 can be one or more. For example... Figure 2 As shown, the high-frequency absorption channel 205 can be one in number and annular in shape, with four second leakage holes 202 on its wall surface, each second leakage hole 202 connecting to a first leakage hole 201. In other embodiments, the number and shape of the high-frequency absorption channel 205 are not limited to this, and the number of leakage channels 204 is not limited to four, but can be one or at least two, without specific limitation. It can be understood that one or more second leakage holes 202 can also be provided on the wall surface of a non-annular high-frequency absorption channel 205.

[0045] Optionally, the outlet 206 is located at one end of the outer peripheral surface 250 near the second end surface 240, including the end where the outer peripheral surface connects to the second end surface. For example... Figure 2 As shown, the outlet 206 can be a groove located at the end of the outer peripheral surface 250. This groove extends on the second end face 240 into the high-frequency absorption channel 205 and communicates with it, for discharging airflow and low-frequency energy. In other embodiments, the outlet 206 can also be a through hole and can be located in other areas of the outer peripheral surface 250.

[0046] In some embodiments, the outlet 206 may extend to and be in direct communication with the second leakage hole 202. For example... Figure 2 As shown, the outlet 206 can be located at the end of the outer peripheral surface 250 corresponding to the second leakage hole 202, and pass through the outer edge 211 to directly connect to the second leakage hole 202. In other embodiments, the outlet 206 can also be spaced apart from the second leakage hole 202, and indirectly connected to the second leakage hole 202 through the high-frequency absorption channel 205. There can be one or more outlets 206. Each outlet 206 can correspond one-to-one with a second leakage hole 202. Of course, the number of outlets 206 can be more or less than the number of second leakage holes 202.

[0047] In this embodiment, when the earplug 10 is installed on the sound-generating device 20, the sound-generating part 21 of the sound-generating device 20 can be inserted into the sound outlet channel 203 through the mounting hole 102, so that the sound emitted by the sound-generating part 21 can be output from the sound outlet hole 101 through the sound outlet channel 203. The outer shell 22 of the sound-generating device 20 can contact the second end face 240 and form a high-frequency absorption cavity 207 by surrounding the groove wall of the high-frequency absorption channel 205. It also cooperates with the part of the outer peripheral surface 250 that has a leakage outlet 206 to form a gap that connects to the high-frequency absorption cavity 207. Thus, the airflow and energy discharged by the leakage channel 204 through the second leakage hole 202 can enter the high-frequency absorption cavity 207. Most of the high-frequency energy will be attenuated in the high-frequency absorption cavity 207, while the airflow and low-frequency energy will be discharged through the gap.

[0048] The sound-emitting part 21 protrudes from the side of the outer casing 22 that contacts the second end face 240, and the area of ​​the sound-emitting part 21 on this side is smaller than that of the outer casing 22. The second end face 240 can be flat, and the surface of the outer casing 22 that contacts the second end face 240 can also be flat, so that the two can make close contact. In other embodiments, the second end face 240 can also be non-planar, such as curved, to adapt to outer casing 22 of other shapes.

[0049] In some embodiments, a limiting groove 208 may be provided on the inner wall of the sound outlet channel 203 for mounting the sound-emitting part 21 to prevent the sound-emitting part 21 from sliding toward the mounting hole 102, so that the outer shell 22 can contact the second end face 240. The sound-emitting part 21 may be engaged in the limiting groove 208. The portion of the sound-emitting part 21 engaged in the limiting groove 208 may be the end of the sound-emitting part 21 away from the outer shell 22, or it may be another portion of the sound-emitting part 21, depending on the actual situation.

[0050] By securing the sound-emitting part 21 in the limiting groove 208, the hearing device 1000 can achieve relative fixation between the sound-emitting device 20 and the earplug 10, allowing the outer shell 22 to make tight contact with the second end face 240. This prevents damage to the aforementioned structure of the hearing device 1000 used to improve acoustic performance, thus improving the stability of the acoustic performance of the hearing device 1000. The sound-emitting part 21 can also achieve relative fixation with the earplug 10 in other ways, such as by interference fit with the inner wall of the sound outlet channel 203.

[0051] It should be understood that the terminology used in this specification and appended claims is for the purpose of describing particular embodiments only and is not intended to limit the application. As used in this specification and appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise. Similarly, the terms “first” and “second” in the description of this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as “first” or “second” may explicitly or implicitly include one or more of the stated features. Furthermore, the term “multiple” in the description of this application means two or more, unless otherwise explicitly specified.

[0052] Please see Figure 3 and Figure 4 , Figure 4 This is an acoustic analog circuit diagram of a hearing device in a wearing state provided in some embodiments of this application.

[0053] In this design, the sound-generating device 20 of the hearing device 1000 can be equivalent to a sound pressure source P, and the internal resistance of the sound-generating device 20 can be equivalent to an acoustic internal resistance Zs. The leakage channel 204 of the earplug 10 provides acoustic quality and acoustic resistance, with the acoustic quality equivalent to an inductance L1 and the acoustic resistance equivalent to a resistance R1. The high-frequency absorption cavity 207 of the hearing device 1000 provides acoustic capacitance, which is equivalent to a capacitance C1. The vent outlet 206 of the earplug 10 provides acoustic quality and acoustic resistance, with the acoustic quality equivalent to an inductance L2 and the acoustic resistance equivalent to a resistance R2. When the hearing device 1000 is in a wearing state, the sound radiation output by the hearing device 1000 is blocked at the ear canal opening, thus forming an acoustic input impedance Zin.

[0054] The link consisting of the sound pressure source P, the acoustic internal resistance Zs, and the acoustic input impedance Zin can be considered as the basic link in the equivalent circuit of the hearing device 1000. Based on the above design, the embodiments of this application further form another acoustic link in the equivalent circuit of the hearing device 1000, which is equivalent to a circuit consisting of inductor L1, resistor R1, inductor L2, resistor R2, and capacitor C1. This link can be considered as a leakage link, used to leak low-frequency energy and airflow in the ear canal.

[0055] The impedance of a leakage link is directly proportional to the propagating vibration frequency; the higher the vibration frequency, the greater the impedance, and vice versa. Therefore, a leakage link has very low impedance to low-frequency vibrations generated in the air, but relatively high impedance to high-frequency vibrations. Thus, a leakage link can be used to leak low-frequency energy while retaining most of the high-frequency energy.

[0056] The earplug 10 provided in this embodiment is suitable for hearing devices 1000 that require high-frequency sound. Taking Ric (Receiver In The Canal) hearing aids as an example, a common problem with Ric hearing aids is poor high-frequency isolation, which easily causes feedback and results in insufficient high-frequency sound gain. The hearing device 1000 provided in this embodiment, by inserting the sound-generating device 20 into the mounting hole 102 of the earplug 10, can leak low-frequency vibrations in the ear canal through the aforementioned leakage path during use, thereby giving the hearing device 1000 higher isolation and sound gain, which is beneficial to improving the acoustic performance of the hearing device 1000. It is understood that the earplug 10 can also be adapted to other devices, such as, but not limited to, headphones.

[0057] Furthermore, when the earplug 10 is worn in the ear canal, due to physical compression, a wisp of air is usually forced between the earplug 10 and the ear canal. The impedance of the aforementioned leakage path to air is also very small, which can be considered as zero, so the leakage path can also be used to leak the air. In other words, this wisp of air can form an airflow and be discharged through the leakage channel 204, the high-frequency absorption cavity 207, and the outlet 206. The hearing device 1000 provided in this application embodiment can utilize the above structure to leak low-frequency energy and air out of the ear canal when worn, thereby reducing or even eliminating the occlusion effect, which not only improves acoustic performance but also enhances wearing comfort.

[0058] The leakage path can also utilize the structure of the corresponding capacitor C1 to reduce high-frequency energy leakage, thus compensating for the insufficient high-frequency energy blocking capabilities of the corresponding inductors L1 and L2. Since the hearing device 1000 can retain energy using the high-frequency absorption cavity 207, the leakage capacity of its leakage channel 204 and leakage outlet 206 can be increased accordingly to leak out as much low-frequency energy as possible. For example, when the signal frequency reaches the high-frequency range where hearing aids are prone to feedback, such as 3kHz or 6kHz, the hearing device 1000 only needs to design the resonant frequency of the corresponding capacitor C1 and inductor L2 to be less than 3kHz or 6kHz to ensure that most of the high-frequency energy is attenuated within the high-frequency absorption cavity 207.

[0059] Optionally, the leakage channel 204 is cylindrical, for example, with a length of 3mm-10mm, such as, but not limited to, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, etc. The diameter of the leakage channel 204 can be 0.3mm-1mm, such as, but not limited to, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, etc. The length and diameter of the leakage channel 204 are both related to its impedance. Through the above design, the leakage channel 204 can efficiently leak low-frequency energy and air. The impedance of the leakage channel 204 is directly proportional to its length and inversely proportional to its diameter. The length-to-diameter ratio of the leakage channel 204 can be 0.3-34, such as 0.5, 1, 5, 10, 15, 20, 25, 30, etc. The diameters of the first leakage hole 201 and the second leakage hole 202 can both be equal to the diameter of the leakage channel 204.

[0060] It should be noted that the above embodiments are only some examples of this application, and the earplug 10 provided in the embodiments of this application may, but is not limited to, the above structure. Please refer to... Figure 5 , Figure 5 This is a cross-sectional structural schematic diagram of an auditory device provided in some other embodiments of this application.

[0061] In some embodiments, the earplug 10 may include a seal 300, on which a groove is provided on the second end face 240, forming a high-frequency absorption channel 205. The seal 300 may cover the opening of the high-frequency absorption channel 205 and form a high-frequency absorption cavity 207 communicating with the second leakage hole 202 and the leakage outlet 206.

[0062] The sealing element 300 can be connected to the second part 220. The sealing element 300 can be disposed on the second end face 240 and cover the opening of the high-frequency absorption channel 205, i.e., the groove opening, on the second end face 240, to form a high-frequency absorption cavity 207. This high-frequency absorption cavity 207 can be formed by the portion of the sealing element 300 exposed to the high-frequency absorption channel 205 and the groove wall of the high-frequency absorption channel 205. In other words, the sealing element 300 in this embodiment can replace the outer shell 22 in the above embodiments, and is used to cooperate with the mounting part 200 to form the high-frequency absorption cavity 207. It is understood that in this embodiment, the sound-generating device 20 may or may not include the outer shell 22.

[0063] In other embodiments, the earplug 10 can also be designed with other structures. For example, the high-frequency absorption channel 205 may not be disposed on the second end face 240, but inside the second portion 220; in this case, the high-frequency absorption channel 205 is a cavity structure, namely the high-frequency absorption cavity 207; the high-frequency absorption cavity 207 is formed by the second portion 220 surrounding it. Alternatively, the high-frequency absorption channel 205 can be a groove disposed on the outer peripheral surface 250; when the earplug 10 is installed on the sound-generating device 20, the outer shell 22 can be partially located around the mounting portion 200 and cover the high-frequency absorption channel 205 to cooperate with the mounting portion 200 in forming the high-frequency absorption cavity 207.

[0064] Please see Figure 6 , Figure 6 This is a cross-sectional structural schematic diagram of an auditory device provided in some other embodiments of this application.

[0065] In some embodiments, the leakage channel 204 may include a first segment 241 and a second segment 242 arranged along its length. The first segment 241 and the second segment 242 have different cross-sectional areas. For example, the cross-sectional area of ​​the first segment 241 may be larger than the cross-sectional area of ​​the second segment 242.

[0066] The acoustic impedance of the leakage channel 204 is inversely proportional to its cross-sectional area. Through the above design, the cross-sectional area of ​​the leakage channel 204 varies, thus causing a change in its acoustic impedance. When vibrational energy is transmitted to the interface of the change in acoustic impedance, for example, from the first segment 241 to the second segment 242, the vibrational energy may be reflected. High-frequency energy is more sensitive to this change in acoustic impedance than low-frequency energy; therefore, high-frequency energy is more easily reflected than low-frequency energy. Consequently, when the hearing device 1000 emits sound, the earplug 10 can retain more high-frequency energy internally, which is beneficial for improving the acoustic performance of the hearing device 1000.

[0067] Among them, the first paragraph 241 and the second paragraph 242 can be as follows: Figure 6 As shown, these are two adjacent sections of the leakage channel 204, which are directly connected. In other embodiments, the first segment 241 and the second segment 242 may also be two spaced-apart sections of the leakage channel 204, which are indirectly connected through other parts of the leakage channel 204.

[0068] The first segment 241 may be closer to the first end face 230 than the second segment 242. In other embodiments, the second segment 242 may also be closer to the first end face 230 than the first segment 241. The shapes of the first segment 241 and the second segment 242 are, for example, but not limited to, cylindrical, trapezoidal, arc, etc., and are not specifically limited.

[0069] In some embodiments, the leakage channel 204 can be as follows: Figure 6As shown, it consists of a first segment 241 and a second segment 242. In other embodiments, the leakage channel 204 may further include at least a portion other than the first segment 241 and the second segment 242, the cross-sectional area of ​​which may be the same as one of the first segment 241 and the second segment 242, or may be different from both the first segment 241 and the second segment 242. In other words, the leakage channel 204 may have one or more acoustic impedance variation interfaces.

[0070] In the description of this application, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0071] The above description is only a partial embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural changes made based on the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. An earplug for mounting on a sound producing device, characterized in that The earplug comprises: an earplug body for contacting an ear canal; a mounting portion arranged on the inner side of the earplug body, the mounting portion comprising a first portion and a second portion connected with each other, the first portion being connected with the earplug body away from the second portion, and the second portion being provided with a high-frequency absorption channel and a leakage port communicating with the outside; an end surface of the first portion away from the second portion is a first end surface, and an end surface of the second portion away from the first portion is a second end surface; the mounting portion is provided with a sound outlet channel and a leakage channel, the sound outlet channel is used for transmitting sound emitted by the sound emitting device to the ear canal, and the leakage channel is spaced apart from the sound outlet channel; one end of the leakage channel penetrates to the first end surface and forms a first leakage hole on the first end surface, and the other end of the leakage channel penetrates to the high-frequency absorption channel and forms a second leakage hole on the wall surface of the high-frequency absorption channel.

2. The earplug of claim 1, wherein The sound emitting device comprises a shell and a sound emitting portion protruding from the shell, and the sound outlet channel is used for mounting the sound emitting portion; the second end surface is provided with a groove, and the groove forms the high-frequency absorption channel; when the shell contacts the second end surface, the shell covers the opening of the high-frequency absorption channel, thereby forming a high-frequency absorption cavity communicating the second leakage hole and the leakage port.

3. The earplug of claim 1, wherein The earplug further comprises a sealing member, the second end surface is provided with a groove, the groove forms the high-frequency absorption channel, and the sealing member covers the opening of the high-frequency absorption channel and forms a high-frequency absorption cavity communicating the second leakage hole and the leakage port.

4. The earplug according to any of claims 1-3, characterized in that The high-frequency absorption channel is arranged along the circumferential direction of the mounting portion.

5. The earplug of claim 4, wherein, The mounting portion is provided with a plurality of leakage channels, and the plurality of leakage channels are arranged in the peripheral direction of the sound outlet channel; the high-frequency absorption channel is annular, and the plurality of second leakage holes are in communication with the high-frequency absorption channel.

6. The earplug of any of claims 1-3, wherein, The leakage port is arranged at one end of the peripheral surface of the mounting portion close to the second end surface.

7. The earplug of claim 6, wherein, The leakage port extends to the second leakage hole and is in direct communication with the second leakage hole.

8. The earplug of any of claims 1-3, wherein, The leakage channel is cylindrical, and the diameter of the leakage channel is 0.3mm-1mm.

9. The earplug of claim 8, wherein, The length of the leakage channel is 3mm-10mm.

10. The earplug of any of claims 1-3, wherein, The leakage channel comprises a first segment and a second segment arranged along the length direction of the leakage channel, and the cross-sectional areas of the first segment and the second segment are different.

11. A hearing device, characterized by The hearing device comprises a sound emitting device and an earplug according to any one of claims 1-10.

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