Ear cap, in-ear audio device, and electronic device assembly

Abstract

The embodiment of the application provides an ear cap, an in-ear audio device and an electronic device assembly, and relates to the technical field of audio devices. The ear cap comprises a sound outlet pipe part, a corner structure part and a contact part. One end of the sound outlet pipe part is connected to the contact part through the corner structure part, the contact part is sleeved on the outside of the sound outlet pipe part, and the sound outlet pipe part, the corner structure part and the contact part have a deformation space therebetween. The sound outlet pipe part comprises a first dense layer and a first foamed layer, and the first dense layer and the first foamed layer are stacked along the thickness direction of the sound outlet pipe part. The corner structure part comprises a second dense layer and a second foamed layer, and the second dense layer and the second foamed layer are stacked along the thickness direction of the corner structure part, and the second dense layer is connected to the first dense layer. The contact part comprises a third dense layer, and the third dense layer is connected to the second dense layer. In this way, the ear cap has a good noise reduction effect.

Description

Technical Field

[0001] This application relates to the field of audio equipment technology, and in particular to an ear cap, an in-ear audio device, and an electronic device component. Background Technology

[0002] In-ear audio devices typically consist of a main unit and an ear tip. The main unit plays audio, while the ear tip, located within the main unit, is inserted into the user's ear canal to make the device fit. The ear tip provides support and noise reduction. However, the noise reduction effect of the ear tip still needs improvement in related technologies. Utility Model Content

[0003] This application provides an ear cap, an in-ear audio device, and an electronic device assembly, which can enable the ear cap to have a better noise reduction effect.

[0004] A first aspect of this application provides an ear cap, which includes a sound outlet tube, a corner structure, and a contact portion. One end of the sound outlet tube is connected to the contact portion via the corner structure, and the contact portion is fitted onto the outside of the sound outlet tube. A deformation space exists between the sound outlet tube, the corner structure, and the contact portion. The sound outlet tube includes a first dense layer and a first foam layer, which are stacked along the thickness direction of the sound outlet tube. The corner structure includes a second dense layer and a second foam layer, which are stacked along the thickness direction of the corner structure and connected to the first dense layer. The contact portion includes a third dense layer, which is connected to the second dense layer.

[0005] The ear cap provided in this embodiment provides good strength through its interconnected first, second, and third dense layers, facilitating a secure fit between the ear cap and the ear canal and extending its lifespan. Simultaneously, as noise passes through the pore structures within the first and second foam layers, it undergoes multiple reflections and friction. These pore structures effectively absorb noise energy and convert it into heat loss, making it difficult for noise from outside the ear canal to penetrate the sound outlet and corner structure into the user's ear canal. Furthermore, the acoustic characteristics of the first dense layer and the first foam layer, as well as the second dense layer and the second foam layer, differ significantly, exhibiting different acoustic impedances and modes. The layered arrangement of these layers reduces resonance interference and creates modal complementarity, resulting in better sound insulation across a wider frequency range, further reducing the likelihood of noise penetrating the sound outlet and corner structure into the user's ear canal. Furthermore, the pore structure of the first and second foaming layers disrupts the noise propagation path, thereby reducing the amount of noise propagating into the ear canal and lowering noise transmittance. This results in better passive noise cancellation for the ear cap. Improved passive noise cancellation reduces the amount of noise entering the ear canal, which is beneficial for active noise cancellation in in-ear audio devices.

[0006] In one possible implementation, the first dense layer and the first foamed layer are an integral structure.

[0007] In this way, the first dense layer and the first foam layer are tightly connected, making it difficult for noise to pass through the connection between the two layers, resulting in better noise reduction in the sound tube section. Furthermore, the good stability of the connection between the first dense layer and the first foam layer contributes to the stability of the structure and acoustic performance of the sound tube section, thus extending the lifespan of the ear cap. Additionally, the ear cap molding process does not require multiple assemblies, making molding easy, precise, and cost-effective.

[0008] In one possible implementation, the second dense layer and the second foamed layer are an integral structure.

[0009] In this way, the second dense layer and the second foam layer are tightly connected, making it difficult for noise to pass through the connection point, resulting in better noise reduction at the corner structure. Furthermore, the good stability of the connection between the second dense layer and the second foam layer contributes to the structural and acoustic stability of the corner structure, thus extending the lifespan of the ear cap. Additionally, the ear cap molding process does not require multiple assemblies, making molding easy, precise, and cost-effective.

[0010] In one possible implementation, the first foam layer is connected to the second foam layer.

[0011] In this way, noise is less likely to pass through the foam structure layer through the gap between the first foam layer and the second foam layer, and the noise reduction effect of the foam structure layer is better.

[0012] In one possible implementation, the first foam layer and the second foam layer are an integral structure.

[0013] In this way, the first and second foam layers are tightly connected, making it difficult for noise to pass through the connection point, resulting in better noise reduction of the foam structure layer. Furthermore, the good stability of the connection between the first and second foam layers contributes to the stability of the foam structure layer's structure and acoustic performance, thus extending the lifespan of the ear cap. Additionally, the ear cap molding process does not require multiple assemblies, making molding easy, precise, and cost-effective.

[0014] In one possible implementation, the first foam layer and the second foam layer are made of the same material.

[0015] In this way, the first and second foam layers have consistent acoustic properties, which is beneficial for stable noise reduction throughout the foam structure layer. Furthermore, the first and second foam layers, being made of the same material, are easy to bond together, resulting in good stability and thus a more stable structure and acoustic performance for the foam structure layer. Additionally, this also reduces the number of molding steps required for the foam structure layer, making its molding process easier.

[0016] In one possible implementation, the first dense layer, the second dense layer, and the third dense layer are a single integrated structure.

[0017] In this way, the first, second, and third dense layers are tightly connected, making it difficult for noise to pass through the joints between them, resulting in better noise reduction from the dense structure. Furthermore, the stability of the connection between the first, second, and third dense layers ensures the structural and acoustic performance of the dense structure is stable, thus extending the lifespan of the ear cap. Additionally, ear cap molding does not require multiple assemblies, making molding easy, precise, and cost-effective.

[0018] In one possible implementation, the first dense layer, the second dense layer, and the third dense layer are made of the same material.

[0019] In this way, the acoustic properties of the first, second, and third dense layers are consistent, which is beneficial for stable noise reduction throughout the dense structure layer. Furthermore, the first, second, and third dense layers, being made of the same material, are easy to bond together, resulting in good stability after bonding, thus making the structure and acoustic performance of the dense structure layer relatively stable. Additionally, this also helps to reduce the number of molding steps for the dense structure layer, making its molding process easier.

[0020] In one possible implementation, the orthographic projection of the first foamed layer onto the first dense layer covers the first dense layer.

[0021] In this way, the large coverage area of ​​the first foam layer is conducive to the absorption of noise energy and the blocking of noise in the sound tube section. The noise reduction effect of the sound tube section is better, and noise is not easy to pass through the sound tube section into the sound channel and enter the ear canal through the sound channel, so that the ear cap has a better noise reduction effect.

[0022] In one possible implementation, the orthographic projection of the second foamed layer onto the second dense layer covers the second dense layer.

[0023] In this way, the second foam layer has a large coverage area, which is conducive to the absorption of noise energy and the blocking of noise in the corner structure. The noise reduction effect of the corner structure is better, and noise is not easy to pass through the corner structure into the ear canal, so the noise reduction effect of the ear cap is better.

[0024] In one possible implementation, the first foamed layer is disposed on the side of the first dense layer facing the deformation space.

[0025] This facilitates the absorption and isolation of noise energy by the sound output tube. Furthermore, the placement of the first foam layer minimizes interference with the sound output channel, ensuring that the audio played by the main audio device is transmitted to the user's ear canal through the sound output channel.

[0026] In one possible implementation, a second foamed layer is provided on the side of the second dense layer facing the deformation space.

[0027] This facilitates the absorption of noise energy and the blocking of noise in the corner structure. Furthermore, the second foamed layer located on the side of the second dense layer facing the deformation space is less prone to damage, which helps maintain the noise reduction performance of the corner structure.

[0028] In one possible implementation, the second foamed layer is located on the side of the second dense layer facing the deformation space.

[0029] In this way, the strong second dense layer can protect the second foam layer, making the second foam layer less prone to damage. The corner structure has good structural and acoustic stability, and the ear cap has a longer service life.

[0030] In one possible implementation, a second foamed layer is provided on the side of the second dense layer that is away from the deformation space.

[0031] This facilitates the absorption of noise energy and the blocking of noise by the corner structure.

[0032] In one possible implementation, the contact portion further includes a third foam layer, wherein the third dense layer and the third foam layer are stacked together along the thickness direction of the contact portion, and the third foam layer is connected to the second foam layer.

[0033] In this way, the third foam layer can effectively absorb noise energy at the contact point and convert it into heat loss. This makes it difficult for noise reflected within the deformation space to pass through the ear cap and enter the ear canal. The large coverage area of ​​the foam structure layer results in good noise energy absorption. Furthermore, the third foam layer and the third dense layer can form modal complementarity, and the contact point provides good sound insulation, making it difficult for noise to pass through the contact point and enter the ear canal. In addition, the third foam layer is connected to the second foam layer, making it difficult for noise to pass through the gap between the second and third foam layers into the foam structure layer, resulting in good noise reduction performance of the foam structure layer.

[0034] In one possible implementation, the pore size in both the first and second foaming layers is greater than or equal to 5 μm and less than or equal to 200 μm.

[0035] In this way, it is easier to form a cell structure in the first foaming layer and the second foaming layer.

[0036] In one possible implementation, the thickness of both the first foam layer and the second foam layer is greater than or equal to 0.2 mm.

[0037] In this way, it is easier to form a cell structure in the first foaming layer and the second foaming layer.

[0038] In one possible implementation, the thickness of the corner structure is greater than or equal to 0.5 mm and less than or equal to 2.5 mm.

[0039] In this way, it is easier to form a corner structure that includes a second foaming layer, which helps to achieve a good noise reduction effect while realizing the corner.

[0040] In one possible implementation, the ear cap further includes a base portion. The end of the first dense layer away from the second dense layer is connected to the base portion, the base portion is made of a dense material, and the base portion and the first dense layer are an integral structure.

[0041] This design provides the base with high strength, facilitating a secure connection with the main body of the audio device. Furthermore, the high strength of the base makes it less prone to damage, extending its lifespan and consequently, the lifespan of the earpiece. Additionally, the connection between the base and the first dense layer ensures a stable connection between the sound tube and the base. Moreover, the integrated structure of the base and the first dense layer enhances the stability of the connection between the base and the sound tube, resulting in a more stable earpiece structure and a longer lifespan. Finally, the earpiece molding process eliminates the need for multiple assembly steps, making molding easy, precise, and cost-effective.

[0042] In one possible implementation, the hardness of the base portion is greater than the hardness of the first dense layer.

[0043] This design provides a strong base, facilitating a secure connection with the main body of the audio equipment. Furthermore, the base is less prone to damage, resulting in a longer lifespan, which in turn extends the lifespan of the ear tips.

[0044] A second aspect of this application provides an in-ear audio device, which includes an audio device body and an ear cap as described in any of the above embodiments.

[0045] A third aspect of this application provides an electronic device component, which includes an electronic device and an in-ear audio device as described in any of the above embodiments. Attached Figure Description

[0046] Figure 1 This application provides a usage scenario diagram for an in-ear audio device.

[0047] Figure 2 A cross-sectional schematic diagram of an ear cap provided in an embodiment of this application;

[0048] Figure 3 A partial cross-sectional schematic diagram of an ear cap provided in an embodiment of this application;

[0049] Figure 4 A schematic diagram illustrating the passive noise reduction benefits of an ear cap provided in an embodiment of this application;

[0050] Figure 5 A schematic diagram illustrating the active noise cancellation benefits of an ear cap provided in an embodiment of this application;

[0051] Figure 6 A cross-sectional schematic diagram of another ear cap provided in an embodiment of this application;

[0052] Figure 7 A cross-sectional schematic diagram of another type of ear cap provided in an embodiment of this application;

[0053] Figure 8 This is a cross-sectional schematic diagram of another type of ear cap provided in an embodiment of this application.

[0054] Explanation of reference numerals in the attached figures:

[0055] 100. Main body of the audio equipment;

[0056] 200. Ear caps;

[0057] 210. Sound outlet section; 211. First dense layer; 212. First foaming layer;

[0058] 220. Corner structure; 221. Second dense layer; 222. Second foamed layer;

[0059] 230. Contact area; 231. Third dense layer; 232. Third foamed layer;

[0060] 240. Base section;

[0061] 250. Foam structure;

[0062] C. Deformation space;

[0063] T, audio output channel. Detailed Implementation

[0064] The terminology used in the implementation section of this application is only for explaining specific embodiments of this application and is not intended to limit this application. The implementation of the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0065] This application provides an electronic device component, which includes an electronic device and an earphone. The earphone is used to interact with the electronic device and can be worn on a user's ear to play audio.

[0066] For example, electronic devices may include, but are not limited to, mobile phones, portable Android devices (PADs), laptops, personal digital assistants (PDAs), handheld devices with wireless communication capabilities, computing devices, in-vehicle devices, wearable devices, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical care, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, and wireless terminals in smart homes.

[0067] For example, the headphones can be wired or wireless. For instance, headphones can include, but are not limited to, Bluetooth headphones, infrared headphones, etc.

[0068] This application provides an in-ear audio device, which may include, but is not limited to, a hearing aid, a sleep mask, or headphones. In some examples, the in-ear audio device can be used to emit white noise to help a user fall asleep.

[0069] This application uses headphones as an example of an in-ear audio device for illustration.

[0070] Figure 1 This is a usage scenario diagram of an in-ear audio device provided in an embodiment of this application.

[0071] like Figure 1 As shown, the in-ear audio device includes an audio device body 100 and an ear cap 200. The ear cap 200 is disposed within the audio device body 100. The in-ear audio device is worn on the user's ear by inserting the ear cap 200 into the user's ear canal. The ear cap 200 is used to contact the user's ear canal and serves functions such as fixation and noise reduction. The audio device body 100 is used to play audio, and the audio played by the audio device body 100 can be transmitted to the user's ear canal through the ear cap 200. Specifically, the ear cap 200 has a sound outlet channel T (e.g., ...). Figure 2 As shown in the figure, the audio played by the main body of the audio device 100 can be transmitted to the user's ear canal through the output channel T.

[0072] For example, the audio device body 100 is used to interact with an electronic device, and the audio device body 100 can be used to play audio according to the signals from the electronic device.

[0073] For example, the audio device body 100 has a sound outlet (not shown), and the ear cap 200 is detachably connected to the sound outlet. The audio played by the audio device body 100 is transmitted to the sound outlet channel T through the sound outlet.

[0074] For example, the ear cap 200 can be fitted onto the outer surface of the sound outlet.

[0075] Figure 2 This is a cross-sectional schematic diagram of an ear cap provided in an embodiment of this application.

[0076] like Figure 2 As shown, the ear cap 200 includes a sound tube portion 210, a corner structure portion 220, a contact portion 230, and a base portion 240. The sound tube portion 210 and the corner structure portion 220, as well as the corner structure portion 220 and the contact portion 230, are schematically divided by dashed lines in the figure.

[0077] One end of the sound tube 210 is connected to the contact portion 230 via a corner structure 220, and the other end of the sound tube 210 is connected to the base portion 240. The contact portion 230 is fitted onto the outside of the sound tube 210. The base portion 240 is connected to the audio device body 100, so that the ear cap 200 is connected to the audio device body 100 via the base portion 240. The sound tube 210 can support the contact portion 230 to facilitate the insertion of the contact portion 230 into the ear canal. The outer surface of the contact portion 230 is used to contact the ear canal to fix the in-ear audio device to the user's ear. The base portion 240 has a connecting hole, which forms a sound outlet channel T with the inner cavity of the sound outlet tube portion 210. The audio played by the audio device main body 100 can be transmitted along the sound outlet tube portion 210 from one end of the sound outlet tube portion 210 connected to the base portion 240 to one end of the sound outlet tube portion 210 connected to the corner structure portion 220, and then enter the ear canal from the one end of the sound outlet tube portion 210 connected to the corner structure portion 220. The sound outlet tube portion 210 is also used to guide the audio played by the audio device main body 100 into the ear canal.

[0078] For example, the base portion 240 is detachably connected to the sound outlet.

[0079] For example, the contact portion 230 is made of an elastic material so that the outer surface of the contact portion 230 fits the user's ear canal, which is beneficial for noise reduction of the in-ear audio device and for stable and comfortable wearing of the in-ear audio device.

[0080] For example, the corner structure 220 is made of an elastic material to facilitate the deformation of the ear cap 200, thereby improving the stability and comfort of wearing in-ear audio devices and enhancing their noise reduction performance. Furthermore, it also helps the ear cap 200 fit the ear canals of different users.

[0081] For example, the sound tube 210 is made of an elastic material to facilitate the deformation of the ear cap 200, thereby improving the stability and comfort of wearing the in-ear audio device and enhancing its noise reduction performance. Furthermore, it also allows the ear cap 200 to fit different users' ear canals.

[0082] In some examples, a deformation space C is provided between the base portion 240, the sound tube portion 210, the corner structure portion 220, and the contact portion 230 to facilitate the deformation of the ear cap 200, thereby improving the stability and comfort of wearing the in-ear audio device and also improving the noise reduction performance of the in-ear audio device. In addition, it also helps the ear cap 200 to fit the ear canals of different users.

[0083] The outer surface of the base portion 240, the outer surface of the sound outlet tube portion 210, the inner surface of the corner structure portion 220, and the inner surface of the contact portion 230 are connected to enclose and form a deformable space C. The inner surfaces of the base portion 240 and the inner surfaces of the sound outlet tube portion 210 are used to enclose and form a sound outlet channel T. The outer surface of the contact portion 230 is used to contact the ear canal. The outer surface of the corner structure portion 220 connects the inner surface of the sound outlet tube portion 210 and the outer surface of the contact portion 230, and is directed toward the interior of the user's ear canal.

[0084] In related technologies, the base, sound tube, corner structure, and contact area are all made of dense materials. The dense material of the ear cap absorbs less noise energy, allowing noise from outside the ear canal to easily pass through the sound tube and corner structure into the user's ear canal. Furthermore, the ear cap has a single acoustic mode, resulting in poor noise isolation for certain frequency bands, allowing noise in those bands to easily pass through the sound tube and corner structure into the user's ear canal. Therefore, the noise reduction effect of the ear caps in these technologies needs further improvement.

[0085] like Figure 2 As shown, based on this, in the embodiment of this application, the sound tube portion 210 includes a first dense layer 211, the corner structure portion 220 includes a second dense layer 221, and the contact portion 230 includes a third dense layer 231. The second dense layer 221 is connected to the first dense layer 211, and the third dense layer 231 is connected to the second dense layer 221, such that the third dense layer 231 is connected to the first dense layer 211 through the second dense layer 221. The first dense layer 211, the second dense layer 221, and the third dense layer 231 form a dense structure layer.

[0086] For example, one end of the second dense layer 221 is connected to the first dense layer 211, and the other end of the second dense layer 221 is connected to the third dense layer 231.

[0087] The sound outlet tube portion 210 further includes a first foam layer 212, and the first dense layer 211 and the first foam layer 212 are stacked together along the thickness direction of the sound outlet tube portion 210. The corner structure portion 220 further includes a second foam layer 222, and the second dense layer 221 and the second foam layer 222 are stacked together along the thickness direction of the corner structure portion 220. The first foam layer 212 and the second foam layer 222 are used to form a foam structure layer. The thickness direction of the sound outlet tube portion 210 is the direction from the inner surface of the sound outlet tube portion 210 to the outer surface of the sound outlet tube portion 210. The thickness direction of the corner structure portion 220 is the direction from the inner surface of the corner structure portion 220 to the outer surface of the corner structure portion 220.

[0088] Figure 3 This is a partial cross-sectional schematic diagram of an ear cap provided in an embodiment of this application.

[0089] like Figure 3As shown, the first dense layer 211, the second dense layer 221, and the third dense layer 231 are all made of dense material. The structure of the structural layers formed by the dense material is dense and continuous, with no significant pore structure 250 (or extremely low porosity). The porosity of the first dense layer 211, the second dense layer 221, and the third dense layer 231 is 0 or close to 0.

[0090] The first foam layer 212 and the second foam layer 222 are both made of foamed material. The structural layers formed by the foamed material have a significant pore structure 250, and the porosity of the structural layers formed by the foamed material is greater than the porosity of the structural layers formed by the dense material. That is, both the first foam layer 212 and the second foam layer 222 have pore structures 250, the porosity of the first foam layer 212 is greater than the porosity of the first dense layer 211, the second dense layer 221, and the third dense layer 231, and the porosity of the second foam layer 222 is greater than the porosity of the first dense layer 211, the second dense layer 221, and the third dense layer 231.

[0091] In this way, the connected first dense layer 211, second dense layer 221, and third dense layer 231 can provide better strength for the ear cap 200, which is conducive to the stable fixation of the ear cap 200 to the ear canal and to give the ear cap 200 a longer service life. At the same time, when noise passes through the foam structure 250 in the first foam layer 212 and the second foam layer 222, the noise will undergo multiple reflections and frictions within the foam structure 250. The foam structure 250 can effectively absorb the energy of the noise and convert the energy of the noise into heat loss, making it difficult for noise from outside the ear canal to pass through the sound tube 210 and the corner structure 220 and enter the user's ear canal. Furthermore, the dense structural layer and the foamed structural layer have significantly different acoustic characteristics, possessing different acoustic impedances and modes. The stacked dense and foamed structural layers reduce resonance interference and create modal complementarity, resulting in better sound insulation across a wider frequency range. This makes it less likely for noise to penetrate the sound outlet section 210 and the corner structural section 220 into the user's ear canal. Additionally, the foam structure 250 disrupts the noise propagation path, further reducing the amount of noise propagating into the ear canal and lowering noise transmittance. This allows the ear cap 200 to have a better passive noise reduction effect. The improved passive noise reduction effect of the ear cap 200 reduces the noise entering the ear canal, which is beneficial for the active noise cancellation of in-ear audio devices.

[0092] Figure 4 This is a schematic diagram illustrating the passive noise reduction benefits of an ear cap, as provided in an embodiment of this application. Figure 4In the diagram, the solid curve represents the acoustic modal curve of the dense structure layer, and the dashed curve represents the acoustic modal curve of the foamed structure layer. The horizontal axis represents frequency, and the vertical axis represents amplitude. The solid and dashed curves show poor noise reduction for frequencies corresponding to peak positions, but better noise reduction for frequencies corresponding to trough positions. Figure 4 As shown, the peaks and troughs of the acoustic modal curves of the dense structural layer and the foamed structural layer complement each other, achieving mutual reinforcement in noise insulation. This results in better sound insulation across a wider frequency range, making it difficult for noise to penetrate the stacked dense and foamed structural layers. Furthermore, from... Figure 4 As can be seen from this, compared to dense structural layers, foamed structural layers have higher damping and can better absorb noise energy.

[0093] Figure 5 This is a schematic diagram illustrating the active noise cancellation benefits of an ear cap, as provided in an embodiment of this application. Figure 5 In the diagram, L1 represents the noise profile passing through the ear cap 200 in the related technology. The base 240, sound outlet tube 210, corner structure 220, and contact portion 230 of the ear cap 200 in the related technology are all made of dense material. Figure 5 The position indicated by the lead of L1 is a peak position of curve L1. L2 is the noise curve passing through the ear cap 200 provided in this embodiment. Figure 5 The position indicated by the lead line of L2 is a peak position of curve L2. Figure 5 In the graph, the horizontal axis represents frequency, and the vertical axis represents amplitude. For example... Figure 5 As shown, compared to L1, the peak of the L2 curve is significantly improved, which is beneficial for the fitting of the filter when the in-ear audio device performs active noise cancellation. This reduces the difficulty of active noise cancellation for in-ear audio devices and helps to improve the effect of active noise cancellation in in-ear audio devices.

[0094] like Figure 2 As shown, in some possible embodiments, the first dense layer 211, the second dense layer 221, and the third dense layer 231 are an integral structure.

[0095] In this way, the first dense layer 211, the second dense layer 221, and the third dense layer 231 are tightly connected, making it difficult for noise to pass through the connection points of the three dense layers, resulting in better noise reduction of the dense structure layer. Furthermore, the connection stability of the first dense layer 211, the second dense layer 221, and the third dense layer 231 is good, making the structure and acoustic performance of the dense structure layer more stable, which helps to improve the service life of the ear cap 200. In addition, the ear cap 200 does not require multiple assembly steps during molding, making molding easy, with high molding precision, and low molding cost.

[0096] In some possible implementations, the first dense layer 211, the second dense layer 221, and the third dense layer 231 are made of the same material.

[0097] In this way, the first dense layer 211, the second dense layer 221, and the third dense layer 231 have consistent acoustic properties, which is beneficial for stable noise reduction throughout the dense structure layer. Furthermore, the first dense layer 211, the second dense layer 221, and the third dense layer 231, made of the same material, are easy to combine, and the resulting combination exhibits good stability, making the structure and acoustic performance of the dense structure layer relatively stable. Additionally, this also helps to reduce the number of molding steps for the dense structure layer, making its molding process easier.

[0098] For example, the first dense layer 211, the second dense layer 221 and the third dense layer 231 can be made of silicone.

[0099] For example, the end of the first dense layer 211 away from the second dense layer 221 is connected to the base portion 240. That is, one end of the first dense layer 211 is connected to the base portion 240, and the other end of the first dense layer 211 is connected to the second dense layer 221. The material of the base portion 240 is a dense material.

[0100] In this way, the base portion 240 has high strength, which facilitates a stable connection with the audio device body 100. Furthermore, the high strength of the base portion 240 makes it less prone to damage, extending its service life and consequently the lifespan of the earpiece 200. Additionally, the connection between the base portion 240 and the first dense layer 211 ensures a more secure connection between the sound tube portion 210 and the base portion 240.

[0101] For example, the base portion 240 may be made of silicone.

[0102] In some possible implementations, the base portion 240 and the first dense layer 211 are an integral structure.

[0103] In this way, the connection between the base portion 240 and the sound tube portion 210 is more stable, resulting in a more stable structure and a longer service life for the ear cap 200. In addition, the ear cap 200 does not require multiple assemblies during molding, making molding easy, with high molding precision and low molding cost.

[0104] In some possible implementations, the hardness of the base portion 240 is greater than the hardness of the first dense layer 211.

[0105] In this way, the base portion 240 has high strength, which facilitates a stable connection with the audio device body 100. In addition, the base portion 240 is not easily damaged, which can give the base portion 240 a longer service life, and thus give the ear cap 200 a longer service life.

[0106] For example, the hardness of the base portion 240 is greater than the hardness of the dense structural layers; that is, the hardness of the base portion 240 is greater than the hardness of the first dense layer 211, the second dense layer 221, and the third dense layer 231.

[0107] For example, the base portion 240 and the first dense layer 211 can be formed of rubber with different hardness.

[0108] For example, the hardness of the base portion 240 can be greater than or equal to 60HA and less than or equal to 90HA.

[0109] For example, the hardness of the first dense layer 211, the second dense layer 221 and the third dense layer 231 can be greater than or equal to 30HA and less than or equal to 50HA.

[0110] In some possible implementations, the first dense layer 211 and the first foamed layer 212 are an integral structure.

[0111] In this way, the first dense layer 211 and the first foam layer 212 are tightly connected, making it difficult for noise to pass through the connection between them, resulting in better noise reduction of the sound outlet section 210. Furthermore, the good stability of the connection between the first dense layer 211 and the first foam layer 212 contributes to the stability of the structure and acoustic performance of the sound outlet section 210, thus extending the service life of the ear cap 200. Additionally, the ear cap 200 does not require multiple assemblies during molding, making it easy to mold, with high molding precision and low molding cost.

[0112] In some possible implementations, the second dense layer 221 and the second foamed layer 222 are an integral structure.

[0113] In this way, the second dense layer 221 and the second foam layer 222 are tightly connected, making it difficult for noise to pass through the connection point between them, resulting in better noise reduction of the corner structure 220. Furthermore, the connection between the second dense layer 221 and the second foam layer 222 is stable, making the structure and acoustic performance of the corner structure 220 more stable and thus improving the service life of the ear cap 200. Additionally, the ear cap 200 does not require multiple assemblies during molding, making it easy to mold, with high molding precision and low molding cost.

[0114] In some possible implementations, the first foam layer 212 is connected to the second foam layer 222.

[0115] In this way, noise is less likely to pass through the foam structure layer through the gap between the first foam layer 212 and the second foam layer 222, and the noise reduction effect of the foam structure layer is better.

[0116] In some possible implementations, the first foam layer 212 and the second foam layer 222 are an integral structure.

[0117] In this way, the first foam layer 212 and the second foam layer 222 are tightly connected, making it difficult for noise to pass through the connection point, resulting in good noise reduction of the foam structure layer. Furthermore, the connection between the first foam layer 212 and the second foam layer 222 is stable, making the structure and acoustic performance of the foam structure layer more stable and thus improving the service life of the ear cap 200. Additionally, the ear cap 200 does not require multiple assemblies during molding, making molding easy, precise, and cost-effective.

[0118] In some possible implementations, the first foam layer 212 and the second foam layer 222 are made of the same material.

[0119] In this way, the first foam layer 212 and the second foam layer 222 have consistent acoustic properties, which is beneficial for stable noise reduction throughout the foam structure layer. Furthermore, the first foam layer 212 and the second foam layer 222, being made of the same material, are easy to bond together, resulting in good stability after bonding, thus making the structure and acoustic performance of the foam structure layer more stable. Additionally, this also helps to reduce the molding steps of the foam structure layer, making its molding process easier.

[0120] For example, the materials of the first foam layer 212 and the second foam layer 222 may include, but are not limited to, silicone, polyurethane (PU), polyethylene (PE), ethylene vinyl acetate copolymer (EVA), natural latex, etc.

[0121] When the dense structural layer is made of dense silicone and the foamed structural layer is made of foamed silicone, the ear cap 200 can effectively reduce noise from 1kHz to 10kHz.

[0122] like Figure 2 , Figure 3 As shown, in some possible embodiments, the contact portion 230 further includes a third foamed layer 232. The third dense layer 231 and the third foamed layer 232 are stacked along the thickness direction of the contact portion 230, and the third foamed layer 232 is connected to the second foamed layer 222. The first foamed layer 212, the second foamed layer 222, and the third foamed layer 232 form a foamed structure layer. The thickness direction of the contact portion 230 is the direction from the inner surface of the contact portion 230 to the outer surface of the contact portion 230.

[0123] In this way, the third foam layer 232 can effectively absorb noise energy at the contact portion 230 and convert it into heat loss. This makes it difficult for noise reflected within the deformation space C to pass through the ear cap 200 and enter the ear canal. The large coverage area of ​​the foam structure layer results in good noise energy absorption. Furthermore, the third foam layer 232 and the third dense layer 231 can form modal complementarity, and the contact portion 230 can provide good sound insulation, making it difficult for noise to pass through the contact portion 230 and enter the ear canal. In addition, the third foam layer 232 is connected to the second foam layer 222, making it difficult for noise to pass through the gap between the second foam layer 222 and the third foam layer 232 into the foam structure layer, resulting in good noise reduction performance of the foam structure layer.

[0124] In some possible implementations, the third foamed layer 232 and the third dense layer 231 are an integral structure.

[0125] In this way, the third dense layer 231 and the third foam layer 232 are tightly connected, making it difficult for noise to pass through the connection point, resulting in better noise reduction of the contact portion 230. Furthermore, the connection between the third dense layer 231 and the third foam layer 232 is stable, making the structure and acoustic performance of the contact portion 230 more stable, which helps to extend the service life of the ear cap 200. In addition, the ear cap 200 does not require multiple assemblies during molding, making molding easy, with high precision, and at a low cost.

[0126] In some possible implementations, the third foam layer 232 and the second foam layer 222 are an integral structure.

[0127] In this way, the third foam layer 232 is tightly connected to the second foam layer 222, making it difficult for noise to pass through the connection point, resulting in good noise reduction of the foam structure layer. Furthermore, the connection between the third foam layer 232 and the second foam layer 222 is stable, making the structure and acoustic performance of the foam structure layer more stable and thus improving the service life of the ear cap 200. Additionally, the ear cap 200 does not require multiple assemblies during molding, making molding easy, precise, and cost-effective.

[0128] For example, the first foam layer 212, the second foam layer 222 and the third foam layer 232 are an integral structure.

[0129] For example, the base portion 240, the first dense layer 211, the second dense layer 221, the third dense layer 231, the first foam layer 212, the second foam layer 222, and the third foam layer 232 are an integral structure.

[0130] In some possible implementations, the third foam layer 232 is made of the same material as the second foam layer 222.

[0131] In this way, the third foam layer 232 has the same acoustic performance as the second foam layer 222, which is beneficial for stable noise reduction throughout the foam structure layer. Furthermore, the third foam layer 232, being made of the same material, is easy to bond with the second foam layer 222, resulting in good stability after bonding, thus making the structure and acoustic performance of the foam structure layer more stable. Additionally, it also helps to reduce the molding steps of the foam structure layer, making its molding process easier.

[0132] For example, the first foam layer 212, the second foam layer 222 and the third foam layer 232 are made of the same material.

[0133] For example, the base portion 240 is made of one material, the dense structural layer is made of one material, and the foam structural layer is made of one material. The ear cap 200 can be integrally molded using a three-injection bonding technology, allowing the ear cap 200 to be formed into a single structure using three different materials. The bonding strength between the interfaces of the three different materials is high, making delamination less likely and less likely to affect the noise reduction performance of the ear cap 200. Furthermore, the thickness and shape of the formed base portion 240, dense structural layer, and foam structural layer are easily controlled. Additionally, the uniformity of the formed base portion 240, dense structural layer, and foam structural layer is good.

[0134] In some possible implementations, the orthographic projection of the second foam layer 222 onto the second dense layer 221 covers the second dense layer 221, that is, the second foam layer 222 extends from one end of the second dense layer 221 connected to the first dense layer 211 to the end of the second dense layer 221 away from the first dense layer 211.

[0135] In this way, the second foaming layer 222 has a large coverage area, which is conducive to the absorption of noise energy and the blocking of noise by the corner structure 220. The noise reduction effect of the corner structure 220 is better, and noise is not easy to pass through the corner structure 220 into the ear canal, so that the noise reduction effect of the ear cap 200 is better.

[0136] Figure 6 This is a cross-sectional schematic diagram of another ear cap provided in an embodiment of this application.

[0137] like Figure 6 As shown, in some possible embodiments, the orthographic projection of the first foam layer 212 onto the first dense layer 211 covers the first dense layer 211, that is, the first foam layer 212 extends from one end of the first dense layer 211 connected to the base portion 240 to one end of the first dense layer 211 connected to the second dense layer 221.

[0138] In this way, the first foam layer 212 has a large coverage area, which is conducive to the absorption of noise energy and the blocking of noise by the sound tube section 210. The noise reduction effect of the sound tube section 210 is better, and noise is not easy to pass through the sound tube section 210 into the sound channel T and enter the ear canal through the sound channel T, so that the noise reduction effect of the ear cap 200 is better.

[0139] For example, the orthographic projection of the third foam layer 232 onto the third dense layer 231 covers at least a portion of the third dense layer 231.

[0140] In some examples, the orthographic projection of the third foam layer 232 onto the third dense layer 231 covers a portion of the third dense layer 231, that is, a portion of the third dense layer 231 is not covered by the orthographic projection of the third foam layer 232 onto the third dense layer 231.

[0141] In this way, the deformation space C is relatively large and the thickness of the contact part 230 is relatively thin, which is conducive to the deformation of the contact part 230, thereby facilitating the stable and comfortable wearing of in-ear audio devices and adapting to the ear canals of different users.

[0142] For example, the third dense layer 231 includes a first sub-part and a second sub-part. The first sub-part is connected to the second dense layer 221 through the second sub-part. That is, the second sub-part is located between the first sub-part and the second dense layer 221. The orthographic projection of the third foaming layer 232 on the third dense layer 231 covers the second sub-part, while the first sub-part is not covered by the orthographic projection of the third foaming layer 232 on the third dense layer 231.

[0143] Figure 7 This is a cross-sectional schematic diagram of another type of ear cap provided in an embodiment of this application.

[0144] In some examples, the orthographic projection of the third foam layer 232 onto the third dense layer 231 covers the third dense layer 231, that is, the third foam layer 232 extends from the end of the third dense layer 231 connected to the second dense layer 221 to the end of the third dense layer 231 away from the second dense layer 221.

[0145] In this way, the third foam layer 232 has a large coverage area, which is conducive to the absorption of noise energy and the blocking of noise by the contact part 230. The noise reduction effect of the contact part 230 is better, which makes the noise reduction effect of the ear cap 200 better.

[0146] In some possible implementations, the first foamed layer 212 is disposed on the side of the first dense layer 211 facing the deformation space C.

[0147] This facilitates the absorption of noise energy and the blocking of noise by the sound output tube section 210. In addition, the arrangement of the first foam layer 212 does not easily affect the sound output channel T, which is beneficial for the audio played by the main body of the audio device 100 to be transmitted to the user's ear canal through the sound output channel T.

[0148] For example, the first foam layer 212 is located on the surface of the sound tube portion 210.

[0149] Of course, in other examples, the first dense layer 211 may also have a first foamed layer 212 on the side opposite to the deformation space C.

[0150] like Figure 7 As shown, in some possible embodiments, the second dense layer 221 has a second foamed layer 222 on the side facing the deformation space C.

[0151] This facilitates the absorption of noise energy and the blocking of noise by the corner structure 220. In addition, the second foamed layer 222 located on the side of the second dense layer 221 facing the deformation space C is not easily damaged, which helps to maintain the noise reduction performance of the corner structure 220.

[0152] For example, the second foamed layer 222 disposed on the side of the second dense layer 221 facing the deformation space C is connected to the first foamed layer 212 disposed on the side of the first dense layer 211 facing the deformation space C.

[0153] In some possible implementations, the second foam layer 222 is disposed on the side of the second dense layer 221 facing the deformation space C. In this case, the side of the second foam layer 222 away from the second dense layer 221 does not have the second foam layer 222.

[0154] In this way, the strong second dense layer 221 can protect the second foam layer 222, the second foam layer 222 is not easily damaged, the corner structure 220 has good structural and acoustic performance stability, and the ear cap 200 has a long service life.

[0155] For example, the second foam layer 222 is located on the surface of the contact portion 230.

[0156] In some possible implementations, a third foamed layer 232 is provided on the side of the third dense layer 231 facing the deformation space C.

[0157] This facilitates the absorption of noise energy and the blocking of noise by the contact portion 230. In addition, the third foaming layer 232, located on the side of the third dense layer 231 facing the deformation space C, is not easily damaged, which helps maintain the noise reduction performance of the contact portion 230.

[0158] For example, the third foamed layer 232 disposed on the side of the third dense layer 231 facing the deformation space C is connected to the second foamed layer 222 disposed on the side of the second dense layer 221 facing the deformation space C.

[0159] In some possible implementations, the third foam layer 232 is disposed on the side of the third dense layer 231 facing the deformation space C. In this case, the third foam layer 232 is not disposed on the side of the third dense layer 231 facing away from the deformation space C.

[0160] In this way, the strong third dense layer 231 can protect the third foam layer 232, the third foam layer 232 is not easily damaged, the structure and acoustic performance of the contact part 230 are more stable, and the ear cap 200 has a longer service life.

[0161] For example, the third foam layer 232 is located on the surface of the contact portion 230.

[0162] Figure 8 This is a cross-sectional schematic diagram of another type of ear cap provided in an embodiment of this application.

[0163] like Figure 8 As shown, in some possible embodiments, the second dense layer 221 has a second foamed layer 222 on the side opposite to the deformation space C.

[0164] This facilitates the absorption of noise energy and the blocking of noise by the corner structure 220.

[0165] In some possible implementations, a third foamed layer 232 is provided on the side of the third dense layer 231 facing away from the deformation space C.

[0166] This facilitates the absorption of noise energy and the blocking of noise by the contact portion 230.

[0167] For example, the third foamed layer 232 disposed on the side of the third dense layer 231 away from the deformation space C is connected to the second foamed layer 222 disposed on the side of the second dense layer 221 away from the deformation space C.

[0168] In some examples, a second foaming layer 222 is provided on both the side of the second dense layer 221 facing the deformation space C and the side of the second dense layer 221 away from the deformation space C.

[0169] In this way, the corner structure 220 has a better effect on absorbing noise energy and blocking noise, which is conducive to improving the noise reduction performance of the ear cap 200.

[0170] In some examples, a third foaming layer 232 is provided on both the side of the third dense layer 231 facing the deformation space C and the side of the third dense layer 231 away from the deformation space C.

[0171] In this way, the contact part 230 has a better effect on absorbing noise energy and blocking noise, which helps to improve the noise reduction performance of the ear cap 200.

[0172] In some examples, the second foam layer 222 is disposed on the side of the second dense layer 221 away from the deformation space C, and the side of the second dense layer 221 facing the deformation space C does not have the second foam layer 222.

[0173] In some examples, the third foam layer 232 is disposed on the side of the third dense layer 231 away from the deformation space C, and the side of the third dense layer 231 facing the deformation space C does not have the third foam layer 232.

[0174] In some possible implementations, the pore size of the first foam layer 212 and the second foam layer 222 is greater than or equal to 5 μm and less than or equal to 200 μm.

[0175] In this way, it is relatively easy to form a cell structure 250 in the first foaming layer 212 and the second foaming layer 222.

[0176] For example, the pore size of the 250-layer pore structure is greater than or equal to 5 μm and less than or equal to 200 μm.

[0177] For example, the pore size of the third foam layer 232 is greater than or equal to 5 μm and less than or equal to 200 μm.

[0178] In this way, it is relatively easy for the third foaming layer 232 to form a cell structure 250.

[0179] For example, the particle size of the foam structure layer can be adjusted according to the noise reduction requirements of the ear cap 200 and the modal frequency points of the dense structure layer to meet the noise reduction requirements of the target frequency band.

[0180] In some possible implementations, the thickness of both the first foam layer 212 and the second foam layer 222 is greater than or equal to 0.2 mm.

[0181] In this way, it is relatively easy to form a cell structure 250 in the first foaming layer 212 and the second foaming layer 222.

[0182] For example, the thickness of the 250-layer foam structure is greater than or equal to 0.2 mm.

[0183] For example, the thickness of the third foam layer 232 is greater than or equal to 0.2 mm.

[0184] In this way, it is relatively easy for the third foaming layer 232 to form a cell structure 250.

[0185] In some possible implementations, the thickness of the corner structure 220 is greater than or equal to 0.5 mm and less than or equal to 2.5 mm.

[0186] In this way, it is easier to form the corner structure 220 including the second foaming layer 222, which is beneficial to achieve a good noise reduction effect while realizing the corner.

[0187] The devices or elements referred to in the embodiments of this application or implied herein must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of this application. In the description of the embodiments of this application, "a plurality of" means two or more, unless otherwise precisely specified.

[0188] The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the present application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0189] The term "multiple" in this article refers to two or more. The term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. Furthermore, the character " / " in this article generally indicates an "or" relationship between the preceding and following related objects; in formulas, the character " / " indicates a "division" relationship between the preceding and following related objects.

[0190] It is understood that the various numerical designations used in the embodiments of this application are merely for descriptive convenience and are not intended to limit the scope of the embodiments of this application.

[0191] It is understood that, in the embodiments of this application, the order of the above-mentioned process numbers does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

Claims

1. An ear cap (200), characterized in that, It includes a sound tube section (210), a corner structure section (220), and a contact section (230). One end of the sound tube (210) is connected to the contact part (230) through the corner structure (220). The contact part (230) is sleeved on the outside of the sound tube (210). There is a deformation space (C) between the sound tube (210), the corner structure (220) and the contact part (230). The sound tube section (210) includes a first dense layer (211) and a first foam layer (212), wherein the first dense layer (211) and the first foam layer (212) are stacked along the thickness direction of the sound tube section (210); The corner structure (220) includes a second dense layer (221) and a second foamed layer (222). The second dense layer (221) and the second foamed layer (222) are stacked along the thickness direction of the corner structure (220). The second dense layer (221) is connected to the first dense layer (211). The contact portion (230) includes a third dense layer (231), which is connected to the second dense layer (221).

2. The ear cap (200) according to claim 1, characterized in that, The first dense layer (211) and the first foamed layer (212) are an integral structure; and / or, The second dense layer (221) and the second foamed layer (222) are an integral structure.

3. The ear cap (200) according to claim 1, characterized in that, The first foam layer (212) is connected to the second foam layer (222).

4. The ear cap (200) according to claim 3, characterized in that, The first foam layer (212) and the second foam layer (222) are an integral structure.

5. The ear cap (200) according to claim 1, characterized in that, The first foam layer (212) and the second foam layer (222) are made of the same material.

6. The ear cap (200) according to claim 1, characterized in that, The first dense layer (211), the second dense layer (221) and the third dense layer (231) are an integral structure.

7. The ear cap (200) according to claim 1, characterized in that, The first dense layer (211), the second dense layer (221), and the third dense layer (231) are made of the same material.

8. The ear cap (200) according to claim 1, characterized in that, The orthographic projection of the first foamed layer (212) onto the first dense layer (211) covers the first dense layer (211); and / or, The orthographic projection of the second foamed layer (222) onto the second dense layer (221) covers the second dense layer (221).

9. The ear cap (200) according to any one of claims 1-8, characterized in that, The first foamed layer (212) is disposed on the side of the first dense layer (211) facing the deformation space (C).

10. The ear cap (200) according to any one of claims 1-8, characterized in that, The second dense layer (221) has a second foamed layer (222) on the side facing the deformation space (C).

11. The ear cap (200) according to claim 10, characterized in that, The second foamed layer (222) is disposed on the side of the second dense layer (221) facing the deformation space (C).

12. The ear cap (200) according to any one of claims 1-8, characterized in that, The second dense layer (221) has a second foamed layer (222) on the side opposite to the deformation space (C).

13. The ear cap (200) according to any one of claims 1-8, characterized in that, The contact portion (230) further includes a third foam layer (232), wherein the third dense layer (231) and the third foam layer (232) are stacked along the thickness direction of the contact portion (230), and the third foam layer (232) is connected to the second foam layer (222).

14. The ear cap (200) according to any one of claims 1-8, characterized in that, The pore size of the first foam layer (212) and the second foam layer (222) is greater than or equal to 5 μm and less than or equal to 200 μm.

15. The ear cap (200) according to any one of claims 1-8, characterized in that, The thickness of both the first foam layer (212) and the second foam layer (222) is greater than or equal to 0.2 mm.

16. The ear cap (200) according to any one of claims 1-8, characterized in that, The thickness of the corner structure (220) is greater than or equal to 0.5 mm and less than or equal to 2.5 mm.

17. The ear cap (200) according to any one of claims 1-8, characterized in that, It also includes a base (240); The end of the first dense layer (211) away from the second dense layer (221) is connected to the base portion (240). The base portion (240) is made of a dense material and the base portion (240) and the first dense layer (211) are an integral structure.

18. The ear cap (200) according to claim 17, characterized in that, The hardness of the base portion (240) is greater than that of the first dense layer (211).

19. An in-ear audio device, characterized in that, It includes an audio device body (100) and an ear cap (200) as described in any one of claims 1-18.

20. An electronic device component, characterized in that, This includes electronic devices, and in-ear audio devices as described in claim 19.

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