Earphone shell, earphone and earphone kit

Abstract

The application provides an earphone shell, an earphone and an earphone kit. The earphone shell comprises a main shell and an acoustic functional part connected to the main shell. The main shell and the acoustic functional part jointly form a containing cavity of the earphone shell, which is suitable for containing electro-acoustic devices of the earphone. The acoustic functional part is provided with an acoustic channel, which at least partially penetrates the acoustic functional part to communicate the containing cavity with the outside. Part or all of the acoustic channel forms an identification part on the acoustic functional part, which presents a specified symbol. The acoustic channel of the earphone shell provided by the application can be used as an acoustic hole such as a sound outlet hole, a sound outlet hole or a sound pickup hole, and can also play an identification role. The acoustic channel and the identification part are effectively combined together, and the multiplexing of the acoustic channel and the identification part is realized.

Description

Technical Field

[0001] This application relates to the field of audio equipment technology, and more specifically, to an earphone housing, earphones, and earphone kit. Background Technology

[0002] Headphones, as an important accessory in mobile communication electronic products, play an irreplaceable role in practical communication applications. In recent years, with the rapid development of electronic technology, wireless headphones have been widely used, such as True Wireless Stereo (TWS) headphones and Bluetooth headphones. True wireless headphones do not require wired connections, freeing them from the constraints of traditional wired headphones. The left and right wireless earbuds connect wirelessly to form a stereo system.

[0003] Generally, a separate acoustic channel needs to be created on headphones, which can be used as a sound outlet, a sound vent, or a pickup port. However, current acoustic channels have limited functionality and cannot meet the needs of existing products. Summary of the Invention

[0004] This application provides an earphone housing, earphones, and earphone kit.

[0005] In a first aspect, embodiments of this application provide an earphone housing, including a main housing and an acoustic functional part connected to the main housing; the main housing and the acoustic functional part together form a receiving cavity of the earphone housing, the receiving cavity being adapted to receive the electroacoustic device of the earphone; the acoustic functional part is provided with an acoustic channel, the acoustic channel at least partially penetrating the acoustic functional part to communicate the receiving cavity with the outside; part or all of the acoustic channel forms an identification part on the acoustic functional part, which is presented as a designated symbol.

[0006] Secondly, embodiments of this application provide an earphone, including an electroacoustic device, a motherboard, and the earphone shell provided in the first aspect. The electroacoustic device is disposed within a receiving cavity, and the motherboard is electrically connected to the electroacoustic device.

[0007] Thirdly, embodiments of this application also provide an earphone kit, including an earphone case and the earphones provided in the second aspect.

[0008] The headphone shell, headphones, and headphone kit provided in this application embodiment have an acoustic channel formed in the headphone shell. The acoustic channel forms an identification part on the acoustic functional part, which is presented as a designated symbol. The acoustic channel can not only be used as an acoustic hole such as a sound outlet, sound leakage hole, or sound pickup hole, but also serve as an identification function. The acoustic channel and the identification part are effectively combined, realizing the reuse of the acoustic channel and the identification part. Since the identification part is formed at the same time as the acoustic channel is processed on the headphone shell, it is no longer necessary to process the identification part separately on the headphone shell, effectively reducing the processing difficulty of the headphones.

[0009] Furthermore, since the markings formed by the acoustic channel are located on the main housing, which is an easily observable part of the earphone, users can easily observe the markings when using the earphone. This effectively avoids the situation where the markings are not easily noticed by users due to being located on the ear stem, thereby reducing the complexity of the user's wearing operation. Attached Figure Description

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

[0011] Figure 1 This is a structural diagram of an earphone kit in a disassembled state, provided in an embodiment of this application.

[0012] Figure 2 This is a schematic diagram of the structure of the first type of earphone in the earphone kit provided in the embodiments of this application.

[0013] Figure 3 Is it like this? Figure 2 The diagram shows the exploded structure of the headphones.

[0014] Figure 4 Is it like this? Figure 3 The diagram shows the structure of the second shell and the ear stem of the earphone.

[0015] Figure 5 Is it like this? Figure 2 The diagram shows the exploded structure of the headphones after the ear tips have been removed.

[0016] Figure 6 This is an exploded structural diagram of the earphone shell of the second type of earphone provided in the embodiments of this application.

[0017] Figure 7 Is it like this? Figure 2 The diagram shows the structural schematic of the acoustic functional part of the earphone.

[0018] Figure 8 This is a schematic diagram of the acoustic functional part of the third type of earphone provided in the embodiments of this application.

[0019] Figure 9 This is a schematic diagram of the acoustic functional part of the fourth type of earphone provided in the embodiments of this application.

[0020] Figure 10 This is a schematic diagram of the acoustic functional part of the fifth type of earphone provided in the embodiments of this application.

[0021] Figure 11 Is it like this? Figure 5 The diagram shows the exploded structure of the headphones after the ear tips have been removed, viewed from another angle.

[0022] Figure 12 Is it like this? Figure 11 The diagram shows the structure of the first housing and acoustic functional parts of the earphone in the assembled state.

[0023] Figure 13 This is a schematic diagram of the exploded structure of the sixth type of earphone provided in the embodiments of this application.

[0024] Figure 14 Is it like this? Figure 13 The diagram shows an exploded view of the acoustic functional components, in-ear sensor, and motherboard of the earphone.

[0025] Figure 15 This is a schematic diagram of the acoustic functional part and biosign sensor of the seventh type of earphone provided in the embodiments of this application in the assembled state.

[0026] Figure 16 This is a schematic diagram of the acoustic functional part of the eighth type of earphone provided in the embodiments of this application.

[0027] Figure 17 This is a schematic diagram of the exploded structure of the ninth type of earphone provided in the embodiments of this application.

[0028] Figure 18 Is it like this? Figure 17 The diagram shows the assembly structure of the headphones.

[0029] Figure 19 Is it like this? Figure 18 A cross-sectional view along the AA direction.

[0030] Figure 20 Is it like this? Figure 19 A magnified view of the area shown at point A in the middle.

[0031] Figure 21 This is a partial cross-sectional schematic diagram of the earphone shell and acoustic resistor of the tenth type of earphone provided in this application embodiment in the assembled state.

[0032] Figure 22 This is a top view of the earphone shell and acoustic resistor of the eleventh type of earphone provided in this application embodiment in the assembled state.

[0033] Figure 23 This is a schematic diagram of the structure of the twelfth type of earphone provided in the embodiments of this application.

[0034] Figure 24 This is an exploded structural diagram of two earpieces of an earphone kit provided in an embodiment of this application.

[0035] Figure 25 This is an exploded structural diagram of the earphone shell and decorative parts of the thirteenth type of earphone provided in this application embodiment.

[0036] Figure 26 This is a schematic diagram of the exploded structure of the fourteenth type of earphone provided in this application embodiment. Detailed Implementation

[0037] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of the present application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative effort are within the scope of protection of the present application.

[0038] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0039] Please see Figure 1 This application provides an earphone kit 500, which includes earphones 100 and an earphone case 200. The earphone case 200 is used to house the earphones 100, providing storage, protection, and / or power to the earphones 100. The earphones 100 can be in-ear earphones, semi-in-ear earphones, or ear-hook earphones. The earphone kit 500 can be used to communicate with an audio output device to receive audio data sent by the audio output device and play corresponding audio. The audio output device can be a smart mobile terminal, television, music player, game console, e-reader, amplifier, speaker, multimedia control console, digital mixing console, etc.

[0040] In this embodiment, the earphone 100 is a wireless earphone. The earphone 100 includes an earphone body (not shown in the figure) and a wireless communication module 110 disposed on the earphone body. The wireless communication module 110 may include at least one of a Bluetooth module, a Zigebee module, or a Wi-Fi module. The wireless communication module 110 is used to establish a wireless communication connection with an audio output device. For example, the earphone 100 and the audio output device can be connected via Bluetooth. Furthermore, two earphones 100 can also establish a wireless communication connection via the wireless communication module 110. This specification uses the earphone 100 as an example of a TWS earphone for description.

[0041] In this embodiment, the earphone 100 may further include a battery, a power management module, and a charging structure (not shown in the figure). The power management module is electrically connected to the battery, which is used to provide power to the earphone 100. The charging structure is electrically connected to the battery through the battery management module. The charging structure may be wireless or a wireless charging structure, and the charging structure may obtain power from an external power supply device through wired or wireless means.

[0042] In other embodiments, the earphone 100 can be a wired earphone. When the earphone 100 is a wired earphone, it may not need to be equipped with a battery, power management module, and charging structure, nor may it need to be equipped with a wireless communication module. In this embodiment, the earphone case 200 may have an electrical contact 210 and a power supply module 220. The electrical contact 210 is used to electrically connect with the charging structure of the earphone 100. The electrical contact 210 can be a metal contact, metal spring, or other structure. The power supply module 220 is electrically connected to the electrical contact 210 to provide power to the earphone 100 through the electrical contact 210. The power supply module 220 can obtain power from an external power supply device wirelessly or wiredly. In some embodiments, the earphone case 200 may not have an electrical contact 210, and the power supply module 220 can provide power to the earphone 100 wirelessly.

[0043] The headphone kit 500 may include one, two, or more headphones 100. The following explanation uses the example of the headphone kit 500 including two headphones 100:

[0044] Please see Figure 2 In this embodiment, the earphone 100 includes an earphone shell 120, an electroacoustic device 130, and a motherboard 140. The earphone shell 120 is used to house the electroacoustic device 130 and the motherboard 140. The electroacoustic device 130 can be an electronic device such as a speaker or a microphone. The motherboard 140 and the electroacoustic device 130 are both housed in the earphone shell 120. The motherboard 140 is electrically connected to the electroacoustic device 130 and is also electrically connected to the wireless communication module 110.

[0045] Please refer to the following: Figure 2 and Figure 3In this embodiment, the earphone housing 120 includes a main housing 121 and an acoustic functional part 122. The main housing 121 is connected to the acoustic functional part 122 and together with the acoustic functional part 122 forms a receiving cavity 1213 of the earphone housing 120. The receiving cavity 1213 is adapted to accommodate the electroacoustic device 130 of the earphone 100, and a portion of the space in the receiving cavity 1213 can serve as a sound output channel or a sound pickup channel for the electroacoustic device 130. The main housing 121 can be a semi-in-ear or fully in-ear structure. When the main housing 121 is a semi-in-ear structure, when the earphone 100 is worn on the ear, the ear-in end of the main housing 121 of the earphone 100 can be inserted into the concha cavity of the human ear; when the main housing 121 of the earphone 100 is a fully in-ear structure, the ear-in end of the main housing 121 can also be connected to an earplug portion and partially inserted into the external auditory canal of the human ear.

[0046] It should be understood that the main housing 121 and the acoustic functional part 122 are both components of the headphone housing 120. The names of the main housing 121 and the acoustic functional part 122 are for ease of description only and should not limit the structure of the headphone housing 120. The main housing 121 and the acoustic functional part 122 may not have a clear dividing line, or they may have a certain dividing line, such as being distinguished by color and / or pattern and / or shape outline and / or structural outline.

[0047] In some embodiments, the main housing 121 and the acoustic functional part 122 can be an integrally molded structure, and the main housing 121 can surround the outer periphery of the acoustic functional part 122. For example, the main housing 121 and the acoustic functional part 122 can be an integrally injection molded structure or a two-shot injection molded structure.

[0048] Furthermore, in some embodiments, the main housing 121 and the acoustic functional part 122 are integrally molded structures. This can be understood as the main housing 121 and the acoustic functional part 122 being combined in the same production process (such as injection molding or double injection molding). In fact, the main housing 121 and the acoustic functional part 122 can be directly molded from the same material (after molding, there is no obvious dividing line between the two), so as to improve the connection strength between the main housing 121 and the acoustic functional part 122, improve the structural consistency and smoothness of the earphone housing 120, and reduce the number of accessories.

[0049] In other embodiments, the main housing 121 and the acoustic functional part 122 can also be connected by an assembly. Before assembly, the acoustic functional part 122 and the main housing 121 can be separate accessories, and the two are assembled into one. It should be noted that the connection structure of an assembly between a component (such as component 1) and another component (such as component 2) mentioned above and below means that the two components are assembled into one. The two components can be produced in different production processes, made of different materials, processed by different processes, or are independent components, and are assembled together in a certain production process. The two are not integrally formed structures. For example, component 1 and component 2 can be assembled by snap-fit, threaded connection, nesting, bonding, welding, or by fasteners. For example, component 1 and component 2 can be assembled into one by a detachable assembly method, and the two can be separated again after assembly.

[0050] Please continue reading. Figure 2 and Figure 3 In this embodiment, the main housing 121 and the acoustic functional unit 122 are connected by an assembly. Further, the main housing 121 is provided with a mounting hole 1214, which penetrates the main housing 121 and communicates with the receiving cavity 1213. The mounting hole 1214 is used to mount the acoustic functional unit 122. The shape and size of the mounting hole 1214 are adapted to the structure of the acoustic functional unit 122 so that the acoustic functional unit 122 can be securely fitted into the mounting hole 1214. The mounting hole 1214 can be a rectangular hole, a circular hole, a diamond-shaped hole, an elliptical hole, an L-shaped hole, an R-shaped hole, or other shapes; this specification does not limit this.

[0051] In this embodiment, the main housing 121 may include a first housing 1211 and a second housing 1212. The first housing 1211 is connected to the second housing 1212 and together with the second housing 1212 forms a receiving cavity 1213. The first housing 1211 can serve as the in-ear end of the earphone 100, which can be adapted to fit the human ear and inserted into the human ear; the second housing 1212 can serve as the rear housing of the earphone 100.

[0052] In this embodiment, the first housing 1211 and the second housing 1212 can be integrally formed or assembled connection structures. For example, the first housing 1211 and the second housing 1212 are assembled connection structures, meaning they can be separated from each other or assembled together. When the first housing 1211 and the second housing 1212 are separated, the receiving cavity 1213 is opened, facilitating the installation of components such as the electroacoustic device 130 and the motherboard 140 into the receiving cavity 1213.

[0053] In this embodiment, the first housing 1211 can be adapted to the shape of the concha of the user's ear. For example, the first housing 1211 is generally semi-ellipsoidal in shape. The first housing 1211 includes a contact surface 1215, which can be arc-shaped and located on the side of the first housing 1211 opposite to the second housing 1212. When the earphone 100 is worn on the ear, at least a portion of the contact surface 1215 can be located within the concha and can at least partially conform to the skin within the concha, so that the earphone 100 can fit snugly against the ear and is less likely to fall out.

[0054] Please continue reading. Figure 2 and Figure 3 In this embodiment, the main housing 121 is provided with a sound outlet 1216, which is used to communicate with the front acoustic cavity of the electroacoustic device 130 of the earphone 100 to release the sound waves generated by the electroacoustic device 130. The sound outlet 1216 can penetrate through the first housing 1211 and can be located near the edge of the contact surface 1215. When the earphone 100 is worn on the ear, the sound outlet 1216 can be opposite to the ear canal, ensuring that the sound waves generated by the electroacoustic device 130 can be transmitted more smoothly into the ear canal. In some feasible ways, the sound outlet 1216 may not be directly opposite the ear canal. The sound outlet 1216 can be a regular shape such as ellipse, rectangle, circle, semicircle or crescent, or it can be an irregular shape, which can be adjusted according to actual needs.

[0055] In some embodiments, the first housing 1211 and the second housing 1212 can together form a sound outlet 1216. For example, the first housing 1211 has a through-hole (not shown) along its edge, and the second housing 1212 has a through-hole (not shown) along its edge. When the first housing 1211 is mounted on the second housing 1212, the first and second notches are interconnected, and both serve as the sound outlet 1216. It should be understood that the edge of the first housing 1211 forming the first notch and the edge of the second housing 1212 forming the second notch together form the sound outlet 1216. Furthermore, in some embodiments, the first notch may only be provided through-hole on the edge of the first housing 1211, or the second notch may only be provided through-hole on the edge of the second housing 1212.

[0056] In some embodiments, when the earphone 100 is a fully in-ear earphone, the main housing 121 of the earphone 100 is configured as an earbud structure, such as... Figure 3As shown, the main housing 121 may have an earbud mounting portion 1217, which may be generally annular in structure. The earbud mounting portion 1217 surrounds the sound outlet 1216 and is connected to the main housing 121. The headphone housing 120 may also include an earbud cover 123 (of course, it can also be considered that the headphone housing 123 does not include the earbud cover, and the earbud cover 123 is an additional part of the headphone housing 120). The earbud cover 123 is fitted onto the earbud mounting portion 1217 and can be a flexible structure, such as silicone or foam. When worn, the earbud cover 123 can be partially inserted into the external auditory canal of the human body, effectively improving the stability of the headphone 100 when worn on the human ear. The earbud cover 123 fits tightly against the external auditory canal of the human body to provide a relatively closed environment for the ear, greatly reducing sound leakage and reducing the interference of external noise on the music. Moreover, by making the earbud cover 123 a flexible structure, it avoids hard contact with the human ear, improving the user's comfort when wearing it. In addition, in some embodiments, the earplug sleeve 123 may be omitted, and the earplug mounting part 1217 may be configured as a flexible structure. Alternatively, the earplug sleeve 123 and the earplug mounting part 1217 may not be provided.

[0057] Please see Figure 3 and Figure 4 In this embodiment, the second shell 1212 is generally in the shape of a semi-ellipsoidal shell structure. The second shell 1212 covers the first shell 1211 and together with the first shell 1211 defines the receiving cavity 1213.

[0058] In this embodiment, the earphone housing 120 further includes an ear stem 1244, which is generally cylindrical in shape. The ear stem 1244 is connected to the second housing 1212 and extends toward the side away from the second housing 1212. In some embodiments, the earphone housing 120 may only include the main housing 121, such as a bean-shaped earphone housing. This is not a limitation, and other features of this application may be applicable to bean-shaped or stem-shaped earphones unless otherwise specified.

[0059] In some embodiments, the ear stem 1244 may include a first mounting shell 1242 and a second mounting shell 1243. The first mounting shell 1242 may be connected to the second shell 1212, and the second mounting shell 1243 may be connected to the first mounting shell 1242, together forming a mounting space (not shown). The mounting space can be used to install devices such as batteries, circuit boards, sensors, and control components. The first mounting shell 1242 and the second mounting shell 1243 may be an integrally formed structure or an assembled connection structure, which is not specifically limited here. By providing the ear stem 1244 described above, it is not only convenient for users to hold, but the ear stem 1244 can also provide more mounting space for the electronic components of the earphone 100. For example, the mounting space can be used to install a larger capacity battery to improve the battery life of the earphone 100.

[0060] In some embodiments, the earphone 100 can be an ear-hook earphone, which can be suspended on the auricle of a human body. The aforementioned ear stem 1244 can be replaced by an ear-hook structure. Specifically, the earphone housing 120 includes an ear-hook portion (not shown), which is connected to the main housing 121. For example, the ear-hook portion is generally in the shape of a barbed hook, which is adapted to the shape of the external auricle of a human body. The ear-hook portion can be directly worn on the outer periphery of the external auricle of a human body, so that the earphone 100 can be worn on the user's ear in a suspended manner, and the earphone 100 is not easy to fall off during use. The ear-hook portion and the main housing 121 can be an assembled connection structure or a one-piece molded structure. In addition, the aforementioned ear stem 1244 or ear-hook portion can also be omitted.

[0061] Please see Figure 5 In this embodiment, the acoustic functional part 122 can be embedded in the mounting hole 1214, and the acoustic functional part 122 and the sound outlet hole 1216 are spaced apart. Exemplarily, the acoustic functional part 122 and the sound outlet hole 1216 can be located on the same side of the main housing 121, or they can be located on opposite sides of the main housing 121, depending on actual needs. The acoustic functional part 122 can be located at the part of the earphone housing 120 suitable for contact with the human ear, or away from the part of the earphone housing 120 suitable for contact with the human ear, depending on actual needs. Specifically, in some examples, when the acoustic functional part 122 is disposed on the earphone housing 120, it can partially contact, completely contact, or not contact the human ear (e.g., the acoustic functional part 122 is spaced apart from the skin of the human ear, or the acoustic functional part 122 faces outwards from the ear canal).

[0062] In some embodiments, the acoustic functional unit 122 may be generally a sheet-like shell structure, such as circular, rectangular, R-shaped, L-shaped, or elliptical. The main shell 121 and the acoustic functional unit 122 may be made of the same or different materials. For example, both the main shell 121 and the acoustic functional unit 122 may be made of metal or plastic, or one may be made of metal and the other of plastic. The appearance color of the acoustic functional unit 122 may be consistent with the appearance color of the main shell 121, for example, both may be white, black, blue, or gray, to maintain the consistency of the overall appearance color of the earphone 100. Alternatively, the appearance color of the acoustic functional unit 122 may be different from that of the main shell 121, thus serving a decorative purpose. For example, the appearance color of the acoustic functional unit 122 may be white or black, and the appearance color of the main shell 121 may be red or blue. This is merely an example and does not impose any limitations on the appearance color of the main housing 121 and the acoustic functional part 122. The colors of the main housing 121 and the acoustic functional part 122 can be matched according to actual needs.

[0063] In this embodiment, the acoustic functional unit 122 is provided with an acoustic channel 1221, which at least partially penetrates the acoustic functional unit 122 to communicate the receiving cavity 1213 with the outside. Part or all of the acoustic channels 1221 form an identification portion 1222 on the acoustic functional unit 122, which may be the entire acoustic channel 1221 or all of the acoustic channels 1221 forming an identification portion 1222 on the acoustic functional unit 122, or a portion of the acoustic channels 1221 or a part of the acoustic channels 1221 forming an identification portion 1222 on the acoustic functional unit 122.

[0064] It should be noted that the "identification part of the designated symbol" mentioned above can be understood as an identification structure or shape outline that carries identification information. The identification information should be understood as indicating a specific characteristic for user identification and / or differentiation. The characteristics conveyed by the identification information may include, but are not limited to, numbers (such as the serial number or serial number of the entity with the identification part), text (such as the type, model number, name, manufacturer / user, etc. of the entity with the identification part), letters (such as the model number, name, manufacturer / user, etc. of the entity with the identification part), and special marks (such as trademarks). Specifically, the designated symbol may include at least one of special marks, letters, numbers, and text, enabling the designated symbol to serve a certain identification function, thereby conveying certain information to the user. The user can identify and / or differentiate the product model number, name, manufacturer / user, or trademark corresponding to the product through this information. For example, the designated symbol may include only special marks, letters, numbers, or text, or any combination of two or more of special marks, letters, numbers, and text. For example, the label 1222 can be designed as a logo icon or a mark indicating whether the headphones are suitable for wearing in the left or right ear (such as "L" or "R" markings). The number of acoustic channels 1221 can be one, two, or more, depending on actual needs. The integration of the acoustic channels 1221 and the label 1222 increases the overall appearance of the headphones and makes them easier for users to identify.

[0065] In some feasible implementations, such as Figure 6 As shown, an acoustic channel 1221 can be formed by directly opening holes in the earphone shell 120. In this case, the acoustic functional part 122 can be understood as the portion of the earphone shell 120 with the acoustic channel 1221, and the main shell 121 can be understood as the portion of the earphone shell 120 other than the portion with the acoustic channel 1221. The main shell 121 and the acoustic functional part 122 can be understood as an integrally formed connection structure, with no clear boundary between them. Thus, the integrally formed structure of the earphone shell 120 is more stable and has lower cost. The acoustic channel 1221 can serve as any of the following: a leakage hole (e.g., a front leakage hole or a rear leakage hole), a sound outlet, or a pickup hole. The front leakage hole mainly serves to equalize the pressure and tune the sound in the front cavity of the speaker during operation; the rear leakage hole mainly serves to equalize the pressure and tune the sound in the rear cavity of the speaker during operation; the sound outlet mainly serves as the main channel for sound output from the speaker, transmitting the sound emitted by the speaker to the outside; and the pickup hole mainly serves as the sound inlet channel for the pickup.

[0066] In this embodiment, the acoustic channel 1221 can serve as a leakage port for the acoustic cavity of the electroacoustic device 130. The leakage port mainly functions to adjust the sound, equalize pressure, and reduce noise. For example, the leakage port can adjust the low frequency of the sound and reduce the noise caused by the deformation of the diaphragm due to negative pressure when the earphone 100 is inserted into the ear. In this embodiment, the acoustic channel 1221 can communicate with the rear acoustic cavity of the electroacoustic device 130 of the earphone 100 to serve as a rear leakage port. It can connect the rear acoustic cavity of the electroacoustic device 130 to the outside world and is used for equalizing the pressure and adjusting the sound of the cavity when the electroacoustic device 130 is working.

[0067] In some embodiments, the acoustic channel 1221 can communicate with the front acoustic cavity of the electroacoustic device 130 (which serves as the main sound-emitting channel) to act as a front vent, which can connect the front cavity to the outside of the earphone for tuning and equalizing pressure. Furthermore, in some embodiments, the acoustic channel 1221 can act as a sound outlet channel, that is, the acoustic channel 1221 replaces the aforementioned sound outlet 1216. The sound outlet channel is used to communicate with the front acoustic cavity of the electroacoustic device 130 of the earphone 100 to release the sound waves generated by the electroacoustic device 130. Correspondingly, a vent can be opened in the earphone housing 120 to achieve the functions of tuning and equalizing pressure.

[0068] In some embodiments, the acoustic channel 1221 extends at least partially through the acoustic functional section 122 according to the shape of a designated symbol to form the marking section 1222. It should be noted that the entire acoustic channel 1221 may extend through the acoustic functional section 122, or only a portion of the acoustic channel 1221 may extend through the acoustic functional section 122.

[0069] As an example, such as Figure 7 As shown, the entire acoustic channel 1221 can be a hollow structure, such that the equivalent cross-sectional area of ​​the acoustic channel 1221 penetrating the acoustic functional part 122 is approximately equal to the equivalent cross-sectional area of ​​the entire acoustic channel 1221. Here, "equivalent cross-sectional area" should be understood as the cross-sectional area of ​​the portion of the hollow structure, such as holes and / or gaps, that directly connects the cavity 1213 to the outside. For example... Figure 7 The acoustic channel 1221 shown is roughly in the shape of the letter "R". The acoustic channel 1221 may include a first part and a second part, which together form the shape of the letter "R". The first part and the second part can be spaced apart from each other, and each of the entire first part and the entire second part penetrates the acoustic functional part 122. By setting the entire acoustic channel 1221 as a hollow structure, it is easy to form the acoustic channel 1221 in one process, resulting in a clearer boundary between the identification part 1222 and the solid structure of the acoustic functional part 122. This allows the outline of the identification part 1222 to be presented more clearly, facilitating quick identification by the user.

[0070] In some embodiments, the equivalent cross-sectional area of ​​the acoustic channel 1221 penetrating the acoustic functional part 122 can be less than or equal to 20 square millimeters to meet the acoustic requirements of the headphone 100, thereby giving the headphone 100 better acoustic performance, such as improving the sound quality and timbre of the headphone 100. For example, when the acoustic channel 1221 serves as a sound vent, the equivalent cross-sectional area of ​​the acoustic channel 1221 penetrating the acoustic functional part 122 can be greater than or equal to 0.02 square millimeters and less than or equal to 20 square millimeters; as another example, when the acoustic channel 1221 serves as a pickup hole (e.g., a microphone hole), the equivalent cross-sectional area of ​​the acoustic channel 1221 penetrating the acoustic functional part 122 can be greater than or equal to 0.07 square millimeters and less than or equal to 20 square millimeters. It should be noted that the specific dimensions described above need to be set according to the acoustic structure and acoustic specifications of each headphone.

[0071] As yet another example, such as Figure 8 As shown, the acoustic channel 1221 may include a groove 1225 and a channel 1226. The groove 1225 does not penetrate the acoustic functional part 122, while the channel 1226 penetrates the acoustic functional part 122. The channel 1226 and the groove 1225 are arranged together according to the shape of a designated symbol. The equivalent cross-sectional area of ​​the channel 1226 may be less than or equal to 20 square millimeters; for example, the equivalent cross-sectional area of ​​the channel 1226 may be less than or equal to 13 square millimeters. The groove 1225 may be connected to the channel 1226 (e.g., their outlines meet) and together form the marking part 1222. By setting a portion of the acoustic channel 1221 as a slot 1225 that does not penetrate the acoustic functional part 122, it is possible to ensure that the equivalent cross-sectional area of ​​the acoustic channel 1221 penetrating the acoustic functional part 122 meets acoustic requirements while ensuring that the marking part 1222 presents the complete shape of the designated symbol. For example, when the equivalent cross-sectional areas of the acoustic channels 1221 of the two headphones 100 are inconsistent (it can be considered that the two are different sizes), a portion of the structure of the acoustic channel 1221 with the larger equivalent cross-sectional area can be set as a slot 1225 that does not penetrate the acoustic functional part 122. This ensures that the equivalent cross-sectional area of ​​the larger acoustic channel 1221 penetrating the acoustic functional part 122 is basically equal to that of the smaller acoustic channel 1221 penetrating the acoustic functional part 122. This makes the two headphones 100 have approximately the same acoustic effect (e.g., the bass reverberation quality is approximately the same). For example, when the acoustic channel 1221 is used as a leakage hole or a sound outlet, the two headphones 100 have approximately the same sound leakage effect or sound outlet effect. The acoustic effect of the headphones can be adjusted by changing the cross-sectional area or the number of through holes in the channel section 1226, thereby adjusting the communication area between the acoustic channel 1221 directly connecting the outside world and the receiving cavity 1213.

[0072] In some implementations, such as Figure 9 As shown, the acoustic channel 1221 includes a plurality of micropores 1223, which are spaced apart in the acoustic functional section 122 to form an identification section 1222 presented as a designated symbol, wherein at least a portion of the micropores 1223 penetrate the acoustic functional section 122. For example, a portion of the micropores 1223 may be through-hole structures, and another portion of the micropores 1223 may be groove structures; or, for another example, all of the micropores 1223 may be through-hole structures. Exemplarily, the aperture of each micropore 1223 may be less than or equal to 0.01 mm, and the apertures of two adjacent micropores 1223 may be equal or different. When the shape or size of the designated symbols presented by the micro-holes 1223 on the two headphones 100 are different (for example, the shape or size of the area occupied by the micro-holes 1223 on the two headphones 100 are different), the sum of the equivalent cross-sectional areas of the micro-holes 1223 on the two headphones 100 may not be the same. For example, the sum of the equivalent cross-sectional areas of multiple micro-holes 1223 on one headphone is greater than the sum of the equivalent cross-sectional areas of multiple micro-holes 1223 on the other headphone. Without changing the number of micro-holes 1223 on each headphone 100, the sum of the equivalent cross-sectional areas of the through-hole structures on the two headphones 100 can be ensured to be approximately equal by setting more of the micro-holes on one headphone 100 as slot structures, or by blocking more of the micro-holes 1223 so that they cannot connect to the outside world and the receiving cavity 1213. That is, the equivalent cross-sectional areas of the acoustic channels 1221 of the two headphones 100 through the acoustic functional part 122 are approximately equal, thereby effectively ensuring that the two headphones 100 have approximately the same acoustic effect (for example, the bass reverberation quality is approximately the same).

[0073] In some implementations, such as Figure 10 As shown, multiple micro-holes 1223 can be distributed on the acoustic functional part 122 and arranged around the shape of the designated symbol. The portion surrounded by the multiple micro-holes 1223 forms the marking part 1222. The marking part 1222 can form the inner or outer contour of the shape of the designated symbol. The spacing between adjacent micro-holes 1223 can be equal or non-equal. For example, as... Figure 9 As shown, multiple micro-holes 1223 can be arranged around the outer contour of the shape of the designated symbol, and the multiple micro-holes 1223 together form the outer contour of the "R" shaped letter symbol. In addition, the multiple micro-holes 1223 can also be distributed in the area between the outer contour of the shape of the designated symbol and the edge of the acoustic functional part 122, so that a part of the acoustic functional part 122 is left without micro-holes 1223. This part of the area is the area surrounded by the outer contour of the shape of the designated symbol, so that this part of the area forms the shape marking part 1222 of the designated symbol.

[0074] In some embodiments, a plurality of micropores 1223 may be arranged in the shape of a designated symbol to form an identification portion 1222, for example, such as Figure 10 As shown, multiple micropores 1223 can be distributed within the area enclosed by the outline marking line of the preset specified symbol, and the multiple micropores 1223 can be distributed at equal intervals or non-equal intervals.

[0075] It should be noted that, as Figure 9 and Figure 10 The dashed lines shown can be either imaginary lines representing the outline of a specified symbol shape or real outlines.

[0076] In some embodiments, the microhole 1223 can be formed by laser processing or etching; exemplarily, the microhole 1223 can be a laser-drilled hole. According to conventional terminology in the machining field, a laser-drilled hole should be understood as a hole formed by a laser drilling machine. Using a laser drilling machine to form the microhole 1223 facilitates the shaping of the microhole 1223 and is not limited to the shape, material, or drilling location of the earphone housing 120, thus greatly improving the manufacturing efficiency of the earphone housing 120. The shape of the microhole 1223 is not limited to a circular hole; it can be other shapes, such as triangular, quadrilateral, pentagonal, or other geometric structures. Accordingly, when referring to the "aperture" of the microhole 1223, it should not be limited to the understanding of "the diameter of a circular hole," but should follow the conventional understanding in the art, using the circumcircle diameter of the cross-sectional profile of the microhole 1223 to characterize the "aperture" of the microhole 1223. For example, the aperture of a square hole should be understood as its circumcircle diameter, i.e., the diagonal dimension.

[0077] By setting the acoustic channel 1221 as multiple micro-holes 1223, since the cross-sectional area of ​​each micro-hole 1223 is very small, when there is a small difference between the sound output effect of the headphone 100 and the sound output effect of the standard headphone, it is only necessary to adjust the number of through-hole structures in the micro-holes 1223 of the headphone 100 to adjust the equivalent cross-sectional area of ​​the acoustic channel 1221 of the headphone 100 through the acoustic functional part 122, so that the equivalent cross-sectional area of ​​the acoustic channel 1221 of the headphone 100 through the acoustic functional part 122 is approximately equal to the equivalent cross-sectional area of ​​the acoustic channel 1221 of the standard headphone through the acoustic functional part 122, so that the acoustic effect of the headphone 100 tends to the sound output effect of the standard headphone.

[0078] Please see Figure 11In this embodiment, the acoustic functional unit 122 includes a first side 1231 and a second side 1232 that are opposite to each other. The surface of the first side 1231 can be continuous with the outer surface of the main housing 121 and can be located in the part of the earphone housing 120 that is close to the ear. For example, the acoustic functional unit 122 can be located in the part of the earphone housing 120 that contacts the ear, or in the part of the earphone housing 120 that is spaced apart from the ear. The second side 1232 is located on the side of the acoustic functional unit 122 facing the receiving cavity 1213. Further, the surface of the second side 1232 is continuous with the inner surface of the main housing 121. "Continuous" can mean that there is a smooth transition connection between the surface of the acoustic functional unit 122 and the surface of the main housing 121. There can be a gap between the acoustic functional unit 122 and the main housing 121, but the gap is small. For example, the width of the gap can be less than or equal to 0.02 mm, which is negligible. This ensures that there is no large gap between the outer surface of the acoustic functional part 122 and the outer surface of the main housing 121, improving the compactness of the assembly between the acoustic functional part 122 and the main housing 121, as well as the sealing performance between the two.

[0079] In some implementations, such as Figure 11 and Figure 12 As shown, when the acoustic functional part 122 and the main housing 121 are connected by an assembly, the acoustic functional part 122 can be detachably embedded in the mounting hole 1214 by means of snap-fit, magnetic attraction or interference fit.

[0080] As an example, the acoustic functional unit 122 may include a body 1227 and a connecting portion 1228 connected to the body 1227. The body 1227 is embedded in the mounting hole 1214, and the acoustic channel 1221 is disposed in the body 1227. The main housing 121 is provided with a mating portion 1218 that engages with the connecting portion 1228. The connecting portion 1228 and the mating portion 1218 form an assembled connection structure. Exemplarily, the connecting portion 1228 is disposed on the outer periphery of the acoustic functional unit 122. The connecting portion 1228 and the mating portion 1218 can be snapped, inserted, or magnetically attracted to each other. For example, the connecting portion 1228 can be a snap-fit ​​structure, and the mating portion 1218 can be a slot structure. The slot structure can be disposed on the inner periphery of the main housing 121 surrounding the mounting hole 1214. As another example, the connecting portion 1228 can be a groove structure, and the mating portion 1218 can be a protrusion structure. The protrusion structure protrudes towards the groove structure to engage with it. By configuring the acoustic functional unit 122 and the main housing 121 as an assembled connection structure, the acoustic functional unit 122 can be used as a separate small accessory, which facilitates the mass production of small accessories, and makes it easy to directly process the acoustic channel 1221 on the acoustic functional unit 122. At the same time, it is easy to replace the acoustic functional unit 122 and repair it.

[0081] In some embodiments, the body 1227 can serve as a decorative structure for the earphone housing 120, and the connecting part 1228 serves as a limiting structure for the acoustic functional part 122, limiting the acoustic functional part 122 from detaching from the main housing 121.

[0082] As an example, the connecting portion 1228 is connected to the outer periphery of the body 1227 and can protrude relative to the body 1227. The connecting portion 1228 is stacked on the side of the main housing 121 facing the receiving cavity 1213. Exemplarily, the connecting portion 1228 can be an annular structure, which can be disposed around the outer periphery of the body 1227 and protrude towards the side away from the body 1227. The connecting portion 1228 is at least partially larger than the size of the mounting hole 1214 to prevent the acoustic functional unit 122 from disengaging from the mounting hole 1214. The connecting portion 1228 can be stacked on the side of the first housing 1211 of the main housing 121 facing the receiving cavity 1213. During installation, the acoustic functional unit 122 can be inserted from the receiving cavity 1213 into the mounting hole 1214, and the connecting portion 1228 can be stacked on the side of the first housing 1211 facing the receiving cavity 1213. By using the connecting portion 1228 as a limiting structure for the acoustic functional portion 122, not only can the installation position of the acoustic functional portion 122 be limited, but also the detachment of the acoustic functional portion 122 from the main housing 121 outside the receiving cavity 1213 can be prevented, thus ensuring the stability of the acoustic functional portion 122 installed in the main housing 121. In some embodiments, such as Figure 13 As shown, the earphone 100 also includes a detection sensor 160 electrically connected to the motherboard 140. The detection sensor 160 is disposed within the earphone housing 120, and its signal transceiver terminal is positioned facing the acoustic functional unit 122 to allow the detection signal of the detection sensor 160 to be transmitted through the acoustic functional unit 122. The detection sensor 160 may include at least one of a biometric sensor and an in-ear sensor 161, wherein the biometric sensor may include at least one of a heart rate sensor, a body fat sensor, a blood oxygen sensor, or a body temperature sensor.

[0083] As an example, such as Figure 13 and Figure 14As shown, the acoustic functional unit 122 has a light-transmitting portion 1224, which forms a signal transmission channel for the optical sensor of the earphone 100. The detection sensor 160 includes an in-ear sensor 161, with its signal transceiver facing the acoustic functional unit 122 to allow the detection signal of the in-ear sensor 161 to be transmitted through the acoustic functional unit 122. The main board 140 is configured to control the wearing state of the earphone 100 based on the detection signal of the in-ear sensor 161. The in-ear sensor 161 can be directly integrated onto the main board 140 or used as a separate device. The in-ear sensor 161 can be a light sensor or an ultrasonic sensor. The light sensor can be an infrared sensor or a laser sensor. The light sensor can be disposed within the receiving cavity 1213, with its signal transceiver facing the light-transmitting portion 1224 to allow the light detection signal of the light sensor to be transmitted through the acoustic functional unit 122, thereby achieving in-ear detection. The motherboard 140 obtains the detection signal from the in-ear sensor 161 to determine whether the earphone 100 is worn in the ear of a human. The detection signal can be the distance value between the earphone 100 and the human ear measured by the in-ear sensor 161. When the distance value is less than a preset distance value, it is determined that the earphone 100 is worn in the ear of a human.

[0084] The aforementioned light-transmitting portion 1224 can be a solid structure or a through-hole structure. As an example, such as... Figure 14 As shown, the acoustic channel 1221 extends through the acoustic functional section 122 to form a light-transmitting portion 1224 on the acoustic functional section 122. That is, the acoustic channel 1221 serves as a signal transmission channel for the detection sensor 160. For example, the signal transceiver of the optical sensor can face the acoustic channel 1221 to allow the optical detection signal of the optical sensor to be transmitted through the acoustic channel 1221.

[0085] In some other implementations, such as Figure 15 As shown, the acoustic functional unit 122 includes a transparent solid structure portion 125, which forms a light-transmitting portion 1224. An acoustic channel 1221 can penetrate the transparent solid structure portion 125. The signal transceiver of the detection sensor 160 can face the non-aperture region of the transparent solid structure portion 125. For example, the signal transceiver of the light sensor can face the non-aperture region of the transparent solid structure portion 125 to allow the light detection signal of the light sensor to be transmitted through the non-aperture region of the transparent solid structure portion 125.

[0086] By setting the acoustic functional part 122 as a transparent structure to serve as a signal transmission channel for the light sensor, or by directly using the acoustic channel 1221 as a signal transmission channel for the light sensor, it is no longer necessary to separately open a signal transmission channel on the main housing 121 or the acoustic functional part 122. This achieves functional diversity of the acoustic functional part 122, reduces the number of openings on the acoustic functional part 122, and can even avoid openings on the main housing 121, ensuring the integrity of the main housing 121, and also reducing the manufacturing difficulty of the product.

[0087] In some implementations, such as Figure 15 As shown, the biometric sensor may include a heart rate sensor 162 electrically connected to the motherboard 140. The heart rate sensor 162 is disposed on the inner wall of the acoustic functional section 122 to allow the detection signal of the heart rate sensor 162 to be transmitted through the acoustic functional section 122. The motherboard 140 is configured to acquire human heart rate information based on the detection signal of the heart rate sensor 162. For example, the heart rate sensor 162 may be an optical heart rate sensor, with its signal transceiver facing the light-transmitting portion 1224. For instance, the signal transceiver of the heart rate sensor 162 may face the acoustic channel 1221, which is the light-transmitting portion 1224, or a non-aperture area of ​​the light-transmitting portion 1224. The detection light from the heart rate sensor 162 can be transmitted through the light-transmitting portion 1224 to the skin of the human ear. The light reflected back by the skin tissue is received by the photosensitive sensor of the heart rate sensor 162 and converted into an electrical signal. This electrical signal is then converted into a digital signal, and the human heart rate is calculated based on the light absorption rate of the blood.

[0088] In some implementations, such as Figure 15 and Figure 16As shown, the earphone housing 120 may further include a bonding portion 126, which is integrated into the acoustic functional portion 122. The bonding portion 126 is a conductive structure 1621 suitable for electrical connection with the electrical signal sensor of the earphone 100. For example, the bonding portion 126 may be a metal structure for sensing and generating and / or transmitting electrical signals. In the embodiments of this application, the bonding portion 126 being "integrated into" the acoustic functional portion 122 should be understood to mean that the relationship between the two includes, but is not limited to: the bonding portion 126 being an independent structure attached to the acoustic functional portion 122 (such as the bonding portion 126 being a patch structure); the bonding portion 126 being at least a part of the structure of the acoustic functional portion 122 (such as the bonding portion 126 being a part of the acoustic functional portion 122), so as to reuse the structure of the acoustic functional portion 122 to realize acoustic functions, identification functions, and electrical conduction functions, further simplifying the structure of the earphone housing 120 and reducing manufacturing costs. Furthermore, the fitting portion 126 and the acoustic functional portion 122 can be an integrally formed structure or an assembled connection structure, and this application does not impose any limitations on this. When the earphone 100 is worn on the human ear, the fitting portion 126 can at least partially fit on the ear, and the conductive structure 1621 contacts the ear to allow the electrical signal sensor to acquire human physiological characteristic signals. Specifically, the biometric sensor may include an electrode-type heart rate sensor, which is electrically connected to the motherboard 140 and to the conductive structure 1621, and is disposed on the inner wall of the acoustic functional portion 122.

[0089] As an example, the conductive structure 1621 may include a first electrode portion 1622 and a second electrode portion 1623 spaced apart from each other, with the first electrode portion 1622 and the second electrode portion 1623 exposed on the outer surface of the bonding portion 126. Exemplarily, the first electrode portion 1622 and the second electrode portion 1623 may be sheet structures, distributed around the outer periphery of the acoustic channel 1221 and spaced apart from it. The electrode-type heart rate sensor is electrically connected to both the first electrode portion 1622 and the second electrode portion 1623. The electrode-type heart rate sensor can measure the dynamic change in impedance between the two parts of the human ear through the first electrode portion 1622 and the second electrode portion 1623, and extract the human heart rate information from the impedance change using an algorithm. The impedance method used to measure heart rate has the advantages of high signal-to-noise ratio and strong anti-interference capability.

[0090] In addition, in some embodiments, the biometric sensor may include a body fat detection sensor, which measures the impedance between two parts of the human ear through a first electrode 1622 and a second electrode 1623, and analyzes various data such as body fat percentage, BMI (body mass index), basal metabolic rate, body water content, muscle and bone mineral content, and visceral fat content based on the impedance value.

[0091] In some implementations, such as Figure 17 As shown, the headphone housing 120 also includes an acoustic resistive element 191, which is connected to the acoustic functional part 122 to at least partially block or expose the acoustic channel 1221, thereby adjusting the communication area between the acoustic channel 1221 and the outside world to achieve the function of sound tuning. For example, the acoustic resistive element 191 can be a tuning mesh, which covers the acoustic channel 1221 and blocks it. The acoustic resistive element (such as a tuning mesh) can be glued to one side of the acoustic channel 1221, such as the side near the inner cavity, or the tuning mesh can be embedded in the acoustic channel 1221. The tuning mesh can also be fixed to one side or inside the acoustic channel 1221 by a support member. Of course, in addition to the tuning mesh, other acoustic resistive elements with air leakage capacity can also be used to limit the equivalent sound transmission area required by the acoustic channel 1221 and achieve the predetermined acoustic effect. The acoustic functional unit 122 can be movably or fixedly connected to the acoustic functional unit 122. In this example, the acoustic resistor 191 is disposed on one side of the acoustic functional unit 122. Specifically, the acoustic resistor 191 is disposed on the side of the acoustic functional unit 122 facing the receiving cavity 1213, or on the side of the acoustic resistor 191 away from the receiving cavity 1213, and at least partially blocks the acoustic channel 1221. The acoustic resistor 191 is disposed opposite to the acoustic functional unit 122. "Relatively disposed" can mean that the acoustic resistor 191 is attached to the acoustic functional unit 122 and at least partially blocks the acoustic channel 1221, or that there is a slight gap between the acoustic resistor 191 and the acoustic functional unit 122 (for example, the gap can be less than or equal to 0.2 mm), and at least partially blocks the acoustic channel 1221. In this example, as... Figure 17 In the structure shown, the acoustic resistor 191 is disposed on the side of the acoustic functional part 122 opposite to the receiving cavity 1213. The acoustic resistor 191 is a solid structure with through holes. Specifically, the acoustic resistor 191 has multiple through holes 1911, which connect the receiving cavity 1213 and the acoustic channel 1221. The through holes 1911 can serve as vents for the acoustic resistor 191. The acoustic resistor 191 can be made of plastic, textiles, metal, permeable materials, or woven materials. For example, the acoustic resistor 191 can be a mesh structure or a mesh plate structure. For instance, the acoustic resistor 191 has multiple micropores with a diameter ranging from 15 micrometers to 30 micrometers, which allow sound to pass through normally but basically prevent external water and debris from entering the receiving cavity 1213.

[0092] Furthermore, the acoustic resistive element 191 may not have through holes 1911. For example, when the acoustic resistive element 191 is a membrane structure made of textile fibers or polymer materials, gaps may exist between its structures. For instance, it could be a waterproof / sound-permeable membrane or a dustproof / breathable membrane. The waterproof / sound-permeable membrane can be made of materials such as EPTFE (polytetrafluoroethylene), TPU (thermoplastic polyurethane), or PES (polyethersulfone) film, while the dustproof / breathable membrane can be made of materials such as PVC (polyvinyl chloride), PE (polyethylene), or PP (polypropylene). By setting up a waterproof / sound-permeable membrane, not only can pressure be balanced and released, but it can also provide water / dust protection.

[0093] The aforementioned acoustic resistive element 191 not only serves as an acoustic resistive structure but also acts as a vent. It has a certain acoustic resistivity. By selecting acoustic resistive elements 191 with different acoustic resistivity, the effect of acoustic resistive elements 191 on the equalization voltage and sound tuning of the headphones 100 can be adjusted. Specifically, acoustic resistive elements 191 with different acoustic resistivity can be selected according to actual needs. For example, the acoustic resistivity of acoustic resistive element 191 can be changed by changing the number of through holes 1911 per unit area or the material of acoustic resistive element 191. For example, the acoustic resistivity of waterproof and sound-permeable membrane can be greater than or equal to 75 and less than or equal to 300, so that the headphones 100 have better sound quality.

[0094] In some implementations, such as Figure 17 As shown, the earphone housing 120 may further include a support member 192, which is fixedly disposed on the side of the acoustic resistor 191 away from the acoustic functional part 122. The support member 192 partially blocks the acoustic channel 1221 to change the communication area of ​​the acoustic channel 1221 that connects the receiving cavity 1213 to the outside. The support member 192 may be a solid structure with a through hole or a solid structure without a through hole. As an example, the support member 192 has a connecting hole 1921 that communicates with the receiving cavity 1213 and can communicate with the acoustic channel 1221 through the through hole 1911. The support member 192 may be made of plastic or metal, for example, PET (polyester resin) or PE (polyethylene). The cross-sectional shape of the connecting hole 1921 may be the same as or different from the cross-sectional shape of the acoustic channel 1221. The number of connecting holes 1921 may be one, two, or more.

[0095] In some embodiments, the minimum value among the equivalent cross-sectional area of ​​the acoustic channel 1221 penetrating the acoustic functional part 122, the equivalent cross-sectional area of ​​the through hole 1911, and the equivalent cross-sectional area of ​​the connecting hole 1921 is greater than or equal to 0.03 square millimeters and less than or equal to 20 square millimeters. It should be noted that when there are multiple acoustic channels 1221, connecting holes 1921, and through holes 1911, it should be understood that the minimum value among the sum of the equivalent cross-sectional areas of the acoustic channel 1221 penetrating the acoustic functional part 122, the sum of the equivalent cross-sectional areas of the through holes 1911, and the sum of the equivalent cross-sectional areas of the connecting hole 1921 penetrating the support member 192 is greater than or equal to 0.03 square millimeters and less than or equal to 20 square millimeters. When there is only one acoustic channel 1221, one connecting hole 1921, and one through hole 1911, it should be understood that the minimum value among the three—the equivalent cross-sectional area of ​​the acoustic channel 1221 penetrating the acoustic functional part 122, the equivalent cross-sectional area of ​​the through hole 1911, and the equivalent cross-sectional area of ​​the connecting hole 1921 penetrating the support member 192—is greater than or equal to 0.03 square millimeters and less than or equal to 20 square millimeters. For example, when there is only one acoustic channel 1221 and one connecting hole 1921, and multiple through holes 1911, the minimum value among the three—the equivalent cross-sectional area of ​​the acoustic channel 1221 penetrating the acoustic functional part 122, the sum of the equivalent cross-sectional areas of the multiple through holes 1911, and the sum of the equivalent cross-sectional areas of the connecting hole 1921 penetrating the support member 192—is greater than or equal to 0.03 square millimeters and less than or equal to 20 square millimeters. For example, when acoustic channel 1221 is used as a leakage hole, the smallest value among the three is greater than or equal to 0.05 square millimeters and less than or equal to 20 square millimeters; as another example, when acoustic channel 1221 is used as a sound output channel, the smallest value among the three is greater than or equal to 3 square millimeters and less than or equal to 13 square millimeters; as yet another example, when acoustic channel 1221 is used as a pickup hole, the smallest value among the three is greater than or equal to 0.07 square millimeters and less than or equal to 20 square millimeters.

[0096] This specification provides only one example. The acoustic channel 1221 extends through the equivalent cross-sectional area of ​​the acoustic functional section 122. This cross-sectional area can be adjusted according to actual needs, such as the size of the earphone shell 120 and the power of the electroacoustic device 130. Since the smallest of the three factors (earphone shell, earphone shell, and headphone 100) limits the area of ​​communication between the cavity 1213 and the outside world, setting the value of the smallest factor to a range of 0.03 square millimeters and less than or equal to 20 square millimeters satisfies the acoustic requirements of the acoustic channel 1221, resulting in better acoustic performance for the earphone 100.

[0097] In some implementations, such as Figure 18 and Figure 19 As shown, the acoustic functional part 122, the acoustic resistor 191, and the support 192 are used together to connect the acoustic cavity of the electroacoustic device 130 with the outside world. The acoustic functional part 122 is located on the outermost side of the three. The outer surface of the acoustic functional part 122 and the outer surface of the main housing 121 together constitute part of the appearance surface of the earphone 100.

[0098] In some implementations, such as Figure 20 As shown, when the headphone housing 120 includes both an acoustic resistor 191 and a support 192, the acoustic functional unit 122, the acoustic resistor 191, and the support 192 are stacked sequentially along a stacking direction X, wherein the stacking direction X can be approximately aligned with the axial direction of the mounting hole 1214. When projected along the stacking direction X, the projection of the outline of the connecting hole 1921 is at least partially located within the projection of the outline of the acoustic channel 1221, that is, the support 192 can partially block the acoustic channel 1221, and / or, the projection of the outline of the through hole 1911 is at least partially located within the projection of the outline of the acoustic channel 1221, that is, the acoustic resistor 191 can partially block the acoustic channel 1221. By changing the area of ​​the acoustic channel 1221 blocked by the support 192, the communication area between the acoustic channel 1221 and the receiving cavity 1213 can be adjusted to adjust the acoustic effect of the headphone 100.

[0099] Furthermore, in some embodiments, when the earphone housing includes an acoustic resistor 191, the acoustic functional unit 122 and the acoustic resistor 191 are stacked sequentially along a stacking direction X. When projected along the stacking direction X, the projection of the outline of the through hole 1911 is at least partially located within the projection of the outline of the acoustic channel 1221, that is, the acoustic resistor 191 can partially block the acoustic channel 1221. By changing the area of ​​the acoustic resistor 191 blocking the acoustic channel 1221, the communication area between the acoustic channel 1221 and the receiving cavity 1213 can be adjusted to adjust the acoustic effect of the earphone 100.

[0100] In some implementations, such as Figure 20As shown, among the three factors—the equivalent cross-sectional area of ​​the acoustic channel 1221 penetrating the acoustic functional part 122, the sum of the equivalent cross-sectional areas of the multiple through holes 1911, and the sum of the equivalent cross-sectional areas of the connecting hole 1921 penetrating the support member 192—the sum of the equivalent cross-sectional areas of the connecting hole 1921 penetrating the support member 192 is the smallest. Therefore, by simply changing the sum of the equivalent cross-sectional areas of the connecting hole 1921 penetrating the support member 192, the communication area between the acoustic channel 1221 and the receiving cavity 1213 can be adjusted, thereby adjusting the acoustic effect of the earphone 100. By standardizing the aperture of the connecting hole 1921 in the support member 192, and assembling two earphones 100 with identical standard support members 192, the communication areas between the acoustic channel 1221 and the receiving cavity 1213 of the two earphones 100 are essentially the same, ensuring that the two earphones 100 have approximately the same acoustic effect. Alternatively, the acoustic damping element 191 can be omitted, and the support element 192 can serve as an acoustic damping structure. The value of the smaller of the sum of the equivalent cross-sectional area of ​​the acoustic channel 1221 penetrating the acoustic functional part 122 and the equivalent cross-sectional area of ​​the connecting hole 1921 penetrating the support element 192 is greater than or equal to 0.03 square millimeters and less than or equal to 20 square millimeters. For example, the sum of the equivalent cross-sectional areas of the connecting hole 1921 penetrating the support element 192 is smaller.

[0101] In some implementations, such as Figure 20 As shown, the acoustic functional part 122 is provided with a receiving part 1234 on the side facing the receiving cavity 1213. The acoustic resistor 191 and / or the support 192 are both housed in the receiving part 1234. Specifically, the receiving part 1234 can be a groove structure. The sum of the thicknesses of the acoustic resistor 191 and the support 192 after they are stacked can be less than or equal to the depth of the receiving part 1234. This can prevent the support 192 from protruding from the inner surface of the acoustic functional part 122 and occupying the space of the receiving cavity 1213, so as to free up more installation space for other devices in the receiving cavity 1213.

[0102] In some embodiments, the support member 192 is adjustablely connected to the acoustic functional part 122 to selectively block different areas of the acoustic channel 1221. Exemplarily, the adjustable connection structure between the support member 192 and the acoustic functional part 122 includes any one or more combinations of the following structures: a slot connection structure, a snap-fit ​​connection structure, and a protrusion and groove mating connection structure. Exemplarily, the acoustic functional part 122 has a groove structure on the side facing the support member 192, and the support member 192 has a protrusion structure facing the acoustic functional part 122. The groove structure has multiple insertion positions, which can be spaced apart along the direction of the groove structure. When the protrusion structure of the support member 192 is inserted into different insertion positions, the area of ​​the acoustic channel 1221 blocked by the support member 192 varies. This allows adjustment of the communication area between the acoustic channel 1221 and the receiving cavity 1213, thereby adjusting the acoustic effect of the earphone 100.

[0103] In some implementations, such as Figure 20 As shown, the acoustic resistor 191 may include a tuning body 1913 and a mounting portion 1912 connected to the tuning body 1913. A through hole 1911 is located in the tuning body 1913. The tuning body 1913 is fixed to the support member 192 and the acoustic functional part 122 via the mounting portion 1912. The tuning body 1913 has a mesh structure. Exemplarily, the tuning body 1913 has a mesh structure, and the mounting portion 1912 may be approximately an annular plate structure. The mounting portion 1912 surrounds the edge of the tuning body 1913 and is connected to it. The mounting portion 1912 can be connected between the support member 192 and the acoustic functional part 122. The mounting portion 1912 can be fixed between the support member 192 and the acoustic functional part 122 by means of adhesive bonding or snap-fitting, thereby achieving a stable fit between the acoustic resistor 191 and the tuning body 191. Furthermore, the tuning body 1227 is located between the support member 192 and the acoustic functional part 122, and can be fitted to both the support member 192 and the acoustic functional part 122 to reduce the stacking thickness between them. The support member 192 can support the tuning body 1227, so that when the tuning body 1227 is a mesh structure, it is flatly supported between the support member 192 and the acoustic functional part 122, thus avoiding the problem of unevenness and depression when the tuning body 1913 is a mesh structure. The tuning body 1227 can be bonded between the support member 192 and the acoustic functional part 122. In addition, in some embodiments, the mounting part 1912 can also be fixed to the inner periphery of the connecting hole 1921 of the support member 192, which can be set according to actual needs.

[0104] The aforementioned acoustic resistive element 191 can be a dustproof element (e.g., sound-permeable / breathable mesh fabric), and the acoustic resistivity is adjusted by partially blocking the acoustic channel 1221 through the support element 192. When the acoustic resistive element 191 is a mesh fabric structure, the support element 192 can support the mesh fabric structure to prevent it from being uneven, so that it can be more evenly arranged between the support element 192 and the acoustic functional part 122.

[0105] It should be noted that in some embodiments, only the acoustic resistor 191 described above may be provided. The acoustic resistor 191 is used to adjust the communication area between the acoustic channel 1221 and the receiving cavity 1213, that is, the acoustic resistor 191 is used to tune the headphones.

[0106] In some other embodiments, the acoustic damping component 191 described above may be omitted, and the support component 192 may be directly used as an acoustic damping structure. The support component 192 and the acoustic functional part 122 are stacked sequentially along the stacking direction X, that is, the acoustic channel 1221 is blocked and tuned by the support component 192.

[0107] In some other embodiments, the acoustic channel 1221 can be partially blocked by the support member 192, and then fine-tuned by the acoustic resistor 191 (e.g., tuning mesh / sound-transmitting mesh). That is, the acoustic channel 1221 can be blocked and tuned simultaneously by the support member 192 and the acoustic resistor 191.

[0108] In some embodiments, the support member 192 can be used to fix and / or support the acoustic resistor 191, and the sound can be tuned only through the acoustic resistor 191. In this case, the support member 192 can not block the acoustic channel 1221.

[0109] The aforementioned acoustic resistor 191 can be fixed by adhesive, clips, etc. The acoustic resistor 191 can also be fixed between the acoustic functional part 122 and the support 192 by the support 192. The support 192 can also be fixed to the acoustic resistor 191 or the acoustic functional part 122 by adhesive, clips, etc. The specific method is not limited.

[0110] As an example, the acoustic resistive element 191 can be a tuning mesh or tuning cloth, which has tuning holes. By adjusting the mesh size (number of holes per unit area) or the hole diameter of the tuning mesh or tuning cloth, different tuning effects can be achieved. The tuning mesh or tuning cloth can be a high-frequency tuning mesh or a low-frequency tuning mesh. For example, the mesh size M1 of the low-frequency tuning mesh can satisfy: 230 mesh ≤ M1 ≤ 260 mesh, and the mesh size M2 of the high-frequency tuning mesh can satisfy: 190 mesh ≤ M1 ≤ 210 mesh. For example, the high-frequency tuning mesh can adjust the audio, reduce the amount of low-frequency sound waves emitted, and improve the effect of mid- and high-frequency sound waves, so that the user can hear a more pleasant sound and avoid sound distortion. The above is only an example; the mesh size of the tuning mesh or tuning cloth, as well as the shape and diameter of the tuning holes, can be adjusted according to actual needs.

[0111] In some embodiments, the acoustic resist 191 can be a rear-leaking steel mesh with multiple mesh openings, which can be formed by etching or laser drilling, for example, by forming mesh openings on a stainless steel sheet to achieve sound transmission. Exemplarily, the acoustic resist 191 can be disposed on the side of the acoustic functional part 122 opposite to the receiving cavity 1213. The acoustic resist 191 can be fixed to the acoustic functional part 122 by embedding, bonding, snap-fitting, etc. Furthermore, the outer surface of the acoustic resist 191 can be continuous with the outer surface of the main housing 121, so that there is a smooth transition between the outer surface of the acoustic resist 191 and the outer surface of the main housing 121, and the gap formed between them can be basically ignored, improving the compactness of the assembly between the acoustic resist 191 and the main housing 121, as well as the sealing performance between them.

[0112] In some embodiments, the acoustic resist 191 can be a solid structure without through holes. The acoustic resist 191 is disposed on one side of the acoustic functional part 122 and blocks part of the acoustic channel 1221.

[0113] In some implementations, such as Figure 21As shown, the acoustic resistor 191 is movably connected to the acoustic functional unit 122 to selectively block or expose different areas of the acoustic channel 1221. That is, the acoustic resistor 191 simultaneously connects different areas of the acoustic channel 1221 to both the receiving cavity 1213 and the outside, thereby adjusting the connection area between the acoustic channel 1221 and the outside, and thus adjusting the acoustic effect. For example, the acoustic resistor 191 can completely expose the acoustic channel 1221, at which point the connection area between the acoustic channel 1221 and the outside is maximized. Alternatively, it can partially block / retain the connection area between the acoustic channel 1221 and the outside. For example, the acoustic resistor 191 can block 1 / 5, 1 / 4, 1 / 3, 1 / 2, etc., of the cross-sectional area of ​​the acoustic channel 1221. For example, the acoustic resistor 191 can be slidably disposed on the acoustic functional unit 122, or it can be rotatably disposed on the acoustic functional unit 122. Furthermore, the acoustic resistor 191 can be movably connected to the acoustic functional part 122 by a plug-in connection. For example, the acoustic functional part 122 can be provided with a slot 1229, in which the acoustic resistor 191 can be movably inserted. Exemplarily, the extending direction Y of the slot 1229 can be aligned with the thickness direction along the connecting part 1228, and the extending direction Y can intersect with the stacking direction X, for example, the two can be perpendicular to each other. The slot 1229 is located on the inner wall of the connecting part 1228, and the slot 1229 can be formed by a recess in the inner wall of the connecting part 1228. One end of the acoustic resistor 191 is slidably embedded in the slot 1229, and the other end of the acoustic resistor 191 can extend along the extending direction Y to above the acoustic channel 1221. When the acoustic resistor 191 is inserted into different positions in the slot 1229, the acoustic resistor 191 can block different areas of the acoustic channel 1221. The area of ​​the acoustic channel 1221 blocked by the acoustic resistor 191 is different. For example, the deeper the acoustic resistor 191 is inserted into the slot 1229, the larger the area of ​​the acoustic channel 1221 blocked by the acoustic resistor 191; the shallower the acoustic resistor 191 is inserted into the slot 1229, the smaller the area of ​​the acoustic channel 1221 blocked by the acoustic resistor 191.

[0114] The acoustic resistor 191 can be used to adjust the communication area between the acoustic channel 1221 and the receiving cavity 1213, thereby adjusting the acoustic effect of the headphones 100 so that the acoustic effect of each headphone 100 is approximately the same. For example, if the equivalent cross-sectional area of ​​the acoustic channel 1221 of the left and right headphones 100 is different, the acoustic effect of the left and right headphones 100 will be different. In order to ensure that the left and right headphones 100 have approximately the same acoustic effect, the position of the acoustic resistor 191 inside the headphone 100 can be adjusted so that the equivalent cross-sectional area of ​​the acoustic channel 1221 of the two headphone 100 is approximately the same.

[0115] In some other implementations, such as Figure 22As shown, the acoustic resistor 191 can be disposed within the acoustic channel 1221. The acoustic resistor 191 can block a portion of the acoustic channel 1221, thereby changing the communication area between the acoustic channel 1221 and the receiving cavity 1213. For example, the acoustic resistor 191 can be disposed within the acoustic channel 1221 such that the equivalent sound transmission area of ​​the acoustic channel 1221 is greater than or equal to 0.03 square millimeters and less than or equal to 20 square millimeters to meet acoustic requirements. Here, the "equivalent sound transmission area" is the communication area of ​​the through-hole portion of the earphone shell 120 that directly connects to the outside world and the receiving cavity 1213. The equivalent sound transmission area can be approximately equal to the equivalent cross-sectional area of ​​the through-hole portion of the acoustic channel 1221 that connects to the outside world and the receiving cavity 1213. By using acoustic resistors 191 of different sizes or changing the number of acoustic resistors 191 disposed in the acoustic channel 1221, the area of ​​the acoustic channel 1221 that is blocked can be changed. Therefore, the communication area between the acoustic channel 1221 and the receiving cavity 1213 can be adjusted to adjust the equivalent cross-sectional area of ​​the acoustic channel 1221, thereby changing the acoustic effect of the headphone 100.

[0116] In some embodiments, when there are multiple acoustic channels 1221, some of the acoustic channels 1221 are provided with acoustic resistors 191. This allows a portion of the acoustic channels 1221 to connect the receiving cavity 1213 to the outside, and also allows adjustment of the communication area between the acoustic channels 1221 and the receiving cavity 1213 to adjust the acoustic effect of the headphones 100. For example, as... Figure 22 As shown, there can be multiple acoustic resistors 191. Multiple acoustic resistors 191 can be arranged in the same acoustic channel 1221. Two adjacent acoustic resistors 191 can be spaced apart from each other so that the receiving cavity 1213 can communicate with the outside.

[0117] In some embodiments, the acoustic resistor 191 can be integrally formed with the acoustic functional part 122. For example, the acoustic resistor 191 can serve as the bottom of part of the acoustic channel 1221. In some embodiments, the acoustic resistor 191 can be colored, such as red, blue, black, or green. For example, when there are multiple acoustic resistors 191, adjacent acoustic resistors 191 can be the same or different colors, which makes the area where the marking part 122 is located more visible and easier for the user to observe quickly. In addition, the acoustic resistor 191 can also be transparent. The acoustic resistivity, size, and number of acoustic resistors 191 can be set according to actual needs and are not limited herein.

[0118] Please see Figure 19 and Figure 20In this embodiment, the electroacoustic device 130 can be a loudspeaker with a front sound cavity and a rear sound cavity. The electroacoustic device 130 is disposed in the receiving cavity 1213 and divides the receiving cavity 1213 into a first cavity 1236 and a second cavity 1237. The first cavity 1236 can serve as the rear sound cavity of the electroacoustic device 130, and the second cavity 1237 can serve as the front sound cavity of the electroacoustic device 130.

[0119] For example, the acoustic channel 1221 is connected to the first cavity 1236 and can serve as a pressure relief hole. For another example, the acoustic channel 1221 can be connected to the second cavity 1237 and can serve as a sound outlet channel to release the sound waves generated by the electroacoustic device 130. The acoustic channel 1221 can replace the aforementioned sound outlet 1216 to release the sound waves generated by the electroacoustic device 130 independently, or the acoustic channel 1221 and the aforementioned sound outlet 1216 can be used together to release the sound waves generated by the electroacoustic device 130.

[0120] Specifically, in Figure 19 In the illustrated embodiment, the sound outlet 1216 is connected to the second cavity 1237 (i.e., the front acoustic cavity of the electroacoustic device 130), and the sound waves generated by the electroacoustic device 130 can be released into the human ear canal through the second cavity 1237 and the sound outlet 1216. The acoustic channel 1221 is connected to the first cavity 1236 (i.e., the rear acoustic cavity of the electroacoustic device 130) to serve as a pressure relief / leakage hole. In this embodiment, the receiving cavity 1213 is directly divided into the first cavity 1236 and the second cavity 1237 by the electroacoustic device 130, which facilitates the formation of the first cavity 1236 and the second cavity 1237, eliminating the need to separately process the first cavity 1236 and the second cavity 1237 within the earphone shell 120, thus simplifying the product structure design.

[0121] In some embodiments, the acoustic channel 1221 can be a pickup channel through which a microphone or other pickup device can collect sound. By setting a label 1222 with a specified symbol in the acoustic functional part 122, for example, setting the exposed part of the pickup channel as a label 122 with a specified symbol (such as R, L), the pickup channel and the label 122 are combined without the need for separate settings, thus making the overall integrity of the outer surface stronger.

[0122] In some embodiments, when the acoustic channel 1221 is a sound pickup channel, the acoustic channel 1221 can be disposed on a part of the earphone housing 120 that is conducive to sound pickup (such as disposed on the ear stem, or disposed on the side of the earphone housing 120 away from the user's ear canal). Furthermore, in other embodiments, such as... Figure 23As shown, when the electroacoustic device 130 is a microphone, the acoustic channel 1221 may not be used as a microphone. Instead, a sound inlet 1219 may be provided on the earphone housing 120 to serve as a microphone. The sound inlet 1219 and the acoustic channel 1221 are spaced apart. For example, the sound inlet 1219 and the acoustic channel 1221 may be respectively provided on opposite sides of the earphone housing 120. For instance, the sound inlet 1219 may be provided on the ear stem 1244, while the acoustic channel 1221 may be provided on the side of the earphone housing 120 facing the user's ear canal. In some other embodiments, the structure of the sound inlet 1219 and the acoustic channel 1221 can be substantially the same. For example, the sound inlet 1219 can also be formed into an identification structure that is presented as a designated symbol. In this case, it can be considered that the earphone housing 120 is provided with two acoustic channels 1221, one of which is a sound inlet and the other is an acoustic channel 1221 that performs other acoustic functions (such as pressure relief, sound output, etc.). These acoustic channels 1221 can be formed on the corresponding acoustic functional part 122 and presented as an identification structure that is presented as a designated symbol. This specification will not elaborate on them one by one.

[0123] In this embodiment, the marking portions 1222 of the two earphones 100 are distinct from each other, and the two earphones 100 are respectively suitable for wearing on the left and right ears of a person. "Distinct marking portions" means that the marking portions 1222 of the two earphones 100 have different structural dimensions and / or shapes. For example, the marking portions 1222 of the two earphones 100 may present two different shapes of designated symbols; exemplarily, the marking portions 1222 of the two earphones 100 may present two different shapes of letter symbols.

[0124] In this embodiment, the marking portions 1222 of the two earphones 100 have different structures, and the marking portions 1222 of the two earphones 100 are used to indicate that the corresponding earphones are suitable for wearing in the left and right ears, respectively. Specifically, the marking portions 1222 of the two earphones 100 can display different letter symbols or text symbols, such as... Figure 24 As shown, the markings 1222 on the two earphones can be letter symbols representing the left and right ears. For example, the marking 1222 of one earphone 100 can be roughly shaped like the letter "L" to represent the English word "Left," and the marking 1222 of the other earphone 100 can be roughly shaped like the letter "R" to represent the English word "Right." Alternatively, the markings 1222 on the two earphones can be text symbols representing the left and right ears, with the marking 1222 of one earphone 100 roughly shaped like the text symbol "Left," and the marking 1222 of the other earphone 100 roughly shaped like the text symbol "Right." In some feasible embodiments, the markings can also be trademarks or other brand identifiers.

[0125] In some embodiments, the difference between the equivalent sound transmission areas of the acoustic channels 1221 of the two earphones 100 can be less than or equal to 0.02 square millimeters. For example, the difference between the equivalent sound transmission areas of the acoustic channels 1221 of the two earphones 100 can be equal to 0.018 square millimeters, 0.016 square millimeters, 0.014 square millimeters, 0.012 square millimeters, or 0.01 square millimeters, etc., so that the equivalent sound transmission areas of the two earphones 100 are as close as possible to the same, thereby making the two earphones 100 have approximately the same acoustic effect. Here, "equivalent sound transmission area" should be understood as the equivalent cross-sectional area of ​​the through-hole portion of the earphone shell 120 through which sound can pass normally, that is, the communication area of ​​the through-hole portion of the earphone shell 120 that directly connects the outside world and the receiving cavity 1213. The equivalent sound transmission area can be basically equal to the equivalent cross-sectional area of ​​the through-hole portion of the acoustic channel 1221 that connects the outside world and the receiving cavity 1213. This is merely an example and does not limit the difference in the equivalent sound transmission area of ​​the acoustic channels 1221 of the two headphones 100. The difference in the equivalent sound transmission area of ​​the acoustic channels 1221 can be adjusted according to actual needs; optionally, it is sufficient to ensure that the equivalent sound transmission areas of the two headphones 100 are approximately the same. For ease of explanation, this specification refers to the two headphones 100 as the first headphone 100a and the second headphone 100b, respectively.

[0126] For example, Figure 24The two headphones 100 shown can be a first headphone 100a and a second headphone 100b, respectively. The first headphone 100a includes a first sound-transmitting element 181, which at least partially obscures the acoustic channel 1221 of the first headphone 100a. The first sound-transmitting element 181 has a first acoustic impedance, and the ratio of the first acoustic impedance to the equivalent sound-transmitting area of ​​the acoustic channel 1221 of the first headphone 100a is L1. The second headphone 100b includes a second sound-transmitting element 182, which at least partially obscures the acoustic channel 1221 of the second headphone 100b. The second sound-transmitting element 182 has a second acoustic impedance, and the ratio of the second acoustic impedance to the equivalent sound-transmitting area of ​​the acoustic channel 1221 of the second headphone 100b is L2. The equivalent sound-transmitting areas of the acoustic channels of the first headphone 100a and the second headphone 100b can be the same or different. Both the first sound-transmitting element 181 and the second sound-transmitting element 182 serve as sound-transmitting structures, which not only have the function of sound transmission but also the function of sound tuning. The first sound-transmitting element 181 and the second sound-transmitting element 182 may include at least one of the aforementioned acoustic resistive element 191, support element 192, and acoustic resistive structure disposed in the acoustic channel 1221. The acoustic resistivity of the first sound-transmitting element 181 and the second sound-transmitting element 182 may be the acoustic resistivity of the entire assembly (the assembly includes at least one of the acoustic resistive element 191, support element 192, and acoustic resistive structure disposed in the acoustic channel 1221). As an example, the structures of the first earphone 100a and the second earphone 100b may be roughly the same. The main difference between the two is that the equivalent cross-sectional area of ​​the acoustic channel 1221 of the first earphone 100a and the second earphone 100b is different. The marking part 1222 of the first earphone 100a and the second earphone 100b are respectively "R" shaped and "L" shaped.

[0127] In some embodiments, the difference between L1 and L2 is less than or equal to 0.2. For example, the difference between L1 and L2 can be equal to 0.18, 0.16, 0.14, 0.12, 0.1, 0.08, 0.06, 0.04, 0.02, 0.01, 0, etc. By minimizing the difference between L1 and L2, the acoustic effects of the first earphone 100a and the second earphone 100b can be kept approximately the same. It can be seen that in some embodiments, even after the support member 192 in the first earphone 100a and the second earphone 100b blocks the acoustic channel 1221, the equivalent cross-sectional areas of the acoustic channels 1221 are still different. This is then adjusted by the acoustic impedance of their respective acoustic resistive members 191, thereby ensuring the consistency of the acoustic characteristics of the left and right earphones.

[0128] For example, if the equivalent sound transmission area of ​​the acoustic channel 1221 of the first earphone 100a is S1 and the equivalent sound transmission area of ​​the acoustic channel 1221 of the second earphone 100b is S2, then a first sound transmission element 181 with an acoustic impedance of R1 and a second sound transmission element 182 with an acoustic impedance of R1 are selected respectively to ensure that R1 / S1=R2 / S2. The equivalent sound transmission area is determined by the acoustic impedance element 191 and / or support element 192 of each of the two earphones and / or the acoustic impedance structure provided in the acoustic channel 1221. For example, when the two earphones only include acoustic resistor 191 or only have acoustic resistor structure in acoustic channel 1221, the equivalent sound transmission area of ​​acoustic channel 1221 of the first earphone 100a is S1, the equivalent sound transmission area of ​​acoustic channel 1221 of the second earphone 100b is S2, the acoustic resistance of acoustic resistor 191 / acoustic resistor structure of the first earphone 100a is R1, the acoustic resistance of acoustic resistor 191 / acoustic resistor structure of the second earphone 100b is R2, and R1 / S1 is equal to or approximately equal to R2 / S2. For example, when two headphones include an acoustic resistor 191 and a support 192, the equivalent sound transmission area of ​​the acoustic channel 1221 after being blocked by the support 192 of the first headphone 100a is S1, and the equivalent sound transmission area of ​​the acoustic channel 1221 after being blocked by the support 192 of the second headphone 100b is S2. The equivalent sound transmission area S1 is different from the equivalent sound transmission area S2. The acoustic resistance of the acoustic resistor 191 of the first headphone 100a is R1, and the acoustic resistance of the acoustic resistor 191 of the second headphone 100b is R2. R1 / S1 is equal to or approximately equal to R2 / S2. For example, when two headphones include acoustic resistive components 191 and support components 192, the first headphone 100a blocks its acoustic channel 129 through its support component 192, and the second headphone 100b blocks its acoustic channel 129 through its support component 192, so that the equivalent sound transmission area of ​​the acoustic channel 1221 of the two headphones is approximately the same, and the acoustic resistivity of the acoustic resistive components 191 of the two headphones is approximately the same, with R1 / S1 equal to or approximately equal to R2 / S2.

[0129] In some embodiments, when the equivalent cross-sectional area of ​​the acoustic channel 1221 in the first earphone 100a is different from that in the second earphone 100b, the equivalent sound transmission area of ​​the first earphone 100a can be adjusted by adjusting the area of ​​the first sound-transmitting element 181 in the first earphone 100a that blocks the acoustic channel 1221, and the equivalent sound transmission area of ​​the second earphone 100b can be adjusted by adjusting the area of ​​the second sound-transmitting element 182 in the second earphone 100b that blocks the acoustic channel 1221.

[0130] For example, such as Figure 24As shown, the cross-sectional area of ​​the acoustic channel 1221 of the first earphone 100a penetrating the acoustic functional part 122 is larger than that of the acoustic channel 1221 of the second earphone 100b penetrating the acoustic functional part 122. The projection of the outline of the connecting hole 1921 of the first sound-permeable member 181 in the first earphone 100a can be partially located within the projection of the outline of the acoustic channel 1221, so that the first sound-permeable member 181 partially blocks the acoustic channel 1221 with a larger cross-sectional area. For example, the cross-sectional area of ​​the connecting hole 1921 on the support member 191 of the first sound-permeable member 181 can be smaller than the cross-sectional area of ​​the acoustic channel 1221, so that the acoustic channel 1221 can be blocked by the solid structure part on the first sound-permeable member 181, thereby reducing the area of ​​actual communication between the acoustic channel 1221 and the receiving cavity 1213. The projection of the outline of the connecting hole 1921 on the support member 191 of the second sound-transmitting element 182 in the second earphone 100b is located outside the projection of the outline of the acoustic channel 1221, so that the second sound-transmitting element 182 does not block the acoustic channel 1221 with a smaller cross-sectional area. This makes the area of ​​the acoustic channel 1221 of the first earphone 100a actually connected to the receiving cavity 1213 approximately the same as the area of ​​the acoustic channel 1221 of the second earphone 100b actually connected to the receiving cavity 1213, thereby making the equivalent sound-transmitting areas of the first earphone 100a and the second earphone 100b approximately equal. When the acoustic channel 1221 is used as a leakage hole, it can be ensured that the acoustic channel 1221 in the first earphone 100a and the second earphone 100a can have approximately the same sound leakage effect; when the acoustic channel 1221 is used as a sound outlet hole, the acoustic channel 1221 in the first earphone 100a and the second earphone 100b can have approximately the same sound output effect.

[0131] In some implementations, such as Figure 25 and 26 As shown, the earphone 100 may further include a functional component 190, which is disposed within the receiving cavity 1213 and opposite the acoustic channel 1221. The functional component 190 is used to implement the functions configured in the earphone 100 to meet the user's needs. For example, the functional component 190 may include at least one of the following: a decorative component 195, a display light source 196, a microphone 198, or a charging connector 197 electrically connected to the motherboard 140. Exemplarily, the functional component 190 includes a decorative component 195, which is disposed within the receiving cavity 1213. The outer surface of the decorative component 195 may face the portion of the acoustic channel 1221 that penetrates the acoustic functional part 122 and may be exposed through the acoustic channel 1221. Thus, the acoustic channel 1221 not only serves an acoustic function but also allows the decorative component 195 to be exposed. The decorative component 195 may be made of fluorescent material or have a fluorescent layer on its outer surface, making it easier for the user to identify the corresponding identification part 1222 in environments with low ambient light.

[0132] In some embodiments, the functional component 190 includes a display light source 196, which extends through the acoustic functional section 122 into the acoustic channel 1221. The light beam emitted by the display light source 196 can be emitted to the outside via the acoustic channel 1221. Furthermore, the functional component 190 may also include a charging connector 197, which extends through the acoustic functional section 1221 into the acoustic functional section 122. The charging connector 197 may be spaced apart from the display light source 196 and face different portions of the acoustic channel 1221. Exemplarily, the charging connector 197 may be a socket or a plug for connecting with a charging structure inside the headphone case. The socket or plug may be exposed through the acoustic channel 1221, and the charging structure inside the headphone case may be a spring-loaded structure. When the headphones 100 are housed inside the headphone case, the spring-loaded structure inside the headphone case can extend into the acoustic channel 1221 to electrically connect with the charging connector 197. Alternatively, the charging connector 197 may also be a spring-loaded structure. In this way, both the display light source 196 and the charging connector 197 can achieve their respective functions through the acoustic channel 1221, eliminating the need for separate holes for installing the display light source 196 and the charging connector 197, thus simplifying the external structure of the entire headphone 100.

[0133] The headphone housing, headphones, and headphone kit provided in this application embodiment have an acoustic channel 1221 formed in the headphone housing 120. The acoustic channel 1221 forms an identification part 1222 on the acoustic functional part 122, which is presented as a designated symbol. The acoustic channel 1221 can not only be used as an acoustic hole such as a sound outlet, sound leakage hole, or sound pickup hole, but it can also serve as an identification function. The acoustic channel 1221 and the identification part 1222 are effectively combined to achieve reuse of the two, making it easy for users to distinguish between the left and right headphones. Since the identification part 1222 is formed at the same time as the acoustic channel 1221 is processed on the headphone housing 120, it is no longer necessary to process the identification part 1222 separately on the headphone housing 120, which effectively reduces the processing difficulty of the headphone 100.

[0134] Furthermore, since the marking formed by the acoustic channel 1221 is located on the main housing 121, and the main housing 121 is a part of the earphone that is easily observed by the user, the user can easily observe the marking on the earphone 100 when using the earphone, which makes it easy for the user to quickly distinguish between the left and right earphones, effectively avoiding the situation where the marking is set on the ear stem and is not easily noticed by the user.

[0135] It should be understood that in this specification, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In this application, "multiple" includes two or more.

[0136] In the description of this specification, 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.

[0137] Furthermore, 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. Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them; although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. An earphone shell, characterized in that, It includes a main housing and an acoustic functional unit connected to the main housing; The main housing and the acoustic functional part together form the receiving cavity of the headphone housing, and the receiving cavity is adapted to accommodate the electroacoustic components of the headphone; The acoustic functional part is provided with an acoustic channel, which at least partially penetrates the acoustic functional part to connect the receiving cavity with the outside; part or all of the acoustic channel forms an identification part on the acoustic functional part, which is presented as a designated symbol; the acoustic channel penetrates the acoustic functional part at least partially according to the shape of the designated symbol to form the identification part, so that the identification part is directly formed by the hollow part of the through structure of the acoustic channel.

2. The earphone shell according to claim 1, characterized in that, The acoustic channel includes a groove and a channel. The groove does not penetrate the acoustic functional component, while the channel penetrates the acoustic functional component. The channel and the groove are arranged together according to the shape of the specified symbol. The equivalent cross-sectional area of ​​the channel is less than or equal to 20 square millimeters.

3. The earphone shell according to claim 1, characterized in that, The acoustic functional part has a light-transmitting portion, which is used to form a signal transmission channel for the headphone's light sensor.

4. The earphone shell according to claim 3, characterized in that, The acoustic functional part includes a transparent solid structure portion, which forms the light-transmitting portion, and the acoustic channel passes through the transparent solid structure portion; or The acoustic channel extends through the acoustic functional part to form the light-transmitting portion on the acoustic functional part.

5. The earphone shell according to claim 1, characterized in that, The earphone housing includes a fitting portion integrated into the acoustic functional portion. The fitting portion is a conductive structure adapted to be electrically connected to the earphone's electrical signal sensor. When the fitting portion is fitted to the ear, the conductive structure is used to contact the ear to allow the electrical signal sensor to acquire human physiological characteristic signals.

6. The earphone shell according to claim 1, characterized in that, The earphone housing also includes an acoustic resistive element connected to the acoustic functional part to at least partially block or expose the acoustic channel.

7. The earphone shell according to claim 6, characterized in that, The acoustic resistive element is disposed on the side of the acoustic functional part facing the receiving cavity or on the side of the acoustic functional part away from the receiving cavity, and the acoustic resistive element at least partially blocks the acoustic channel; and / or The acoustic resistive element is disposed within the acoustic channel such that the equivalent sound transmission area of ​​the acoustic channel is greater than or equal to 0.03 square millimeters and less than or equal to 20 square millimeters.

8. The earphone housing according to claim 6, characterized in that, The acoustic resistive element is disposed opposite to the acoustic functional part, and the acoustic resistive element has multiple through holes that connect the receiving cavity and the acoustic channel; or, the acoustic resistive element is a tuning mesh.

9. The earphone housing according to claim 8, characterized in that, The acoustic impedance component includes a tuning body and a mounting portion connected to the tuning body. The through hole is located in the tuning body, and the tuning body is fixed to the acoustic functional part through the mounting portion.

10. The earphone housing according to claim 1 or 6, characterized in that, The earphone housing also includes a support member, which is fixedly disposed on the side of the acoustic functional part facing the receiving cavity; the support member is provided with a connecting hole, which communicates with the receiving cavity.

11. The earphone housing according to claim 10, characterized in that, The smaller of the equivalent cross-sectional area of ​​the acoustic channel penetrating the acoustic functional part and the equivalent cross-sectional area of ​​the connecting hole is greater than or equal to 0.03 square millimeters and less than or equal to 20 square millimeters.

12. The earphone housing according to claim 10, characterized in that, The support member and the acoustic functional part are stacked along a stacking direction; when projected along the stacking direction, the projection of the outline of the connecting hole is at least partially located within the projection of the outline of the acoustic channel; or When the earphone housing includes an acoustic resistive element, the acoustic resistive element has a through hole, the support element, the acoustic resistive element and the acoustic functional part are stacked along a stacking direction, and the projection of the outline of the through hole and / or the projection of the outline of the through hole are at least partially located within the projection of the outline of the acoustic channel.

13. The earphone shell according to claim 1, characterized in that, The main housing is provided with mounting holes, and the acoustic functional parts are embedded in the mounting holes.

14. The earphone housing according to claim 13, characterized in that, The acoustic functional part includes a body and a connecting part. The connecting part is connected to the body, the acoustic channel is disposed in the body, the body is embedded in the mounting hole of the main housing, and the connecting part is connected to the main housing.

15. The earphone shell according to claim 1, characterized in that, The main housing and the acoustic functional part are integrally formed, and the main housing surrounds the outer periphery of the acoustic functional part.

16. The earphone shell according to any one of claims 1 to 11 and 13 to 15, characterized in that, The main housing is also provided with a sound outlet, which is used to communicate with the front acoustic cavity of the headphone's electroacoustic device to release the sound waves generated by the electroacoustic device; the acoustic functional part is spaced apart from the sound outlet and serves as a leakage hole for the rear acoustic cavity of the electroacoustic device; or The acoustic channel serves as the sound pickup port of the main housing.

17. An earphone shell, characterized in that, It includes a main housing and an acoustic functional unit connected to the main housing; The main housing and the acoustic functional part together form the receiving cavity of the headphone housing, and the receiving cavity is adapted to accommodate the electroacoustic components of the headphone; The acoustic functional part is provided with an acoustic channel, which at least partially penetrates the acoustic functional part to communicate the receiving cavity with the outside; part or all of the acoustic channel forms an identification part on the acoustic functional part, which is presented as a designated symbol; The acoustic channel includes a plurality of micropores, which are spaced apart in the acoustic functional part to form the identification part presented as a designated symbol, wherein at least a portion of the micropores penetrate the acoustic functional part.

18. An earphone shell, characterized in that, It includes a main housing and an acoustic functional unit connected to the main housing; The main housing and the acoustic functional part together form the receiving cavity of the headphone housing, and the receiving cavity is adapted to accommodate the electroacoustic components of the headphone; The acoustic functional part is provided with an acoustic channel, which at least partially penetrates the acoustic functional part to communicate the receiving cavity with the outside; part or all of the acoustic channel forms an identification part on the acoustic functional part, which is presented as a designated symbol; The acoustic channel includes a plurality of micropores, wherein at least a portion of the micropores penetrate the acoustic functional part, and the plurality of micropores are arranged in the shape of a designated symbol to form the marking part.

19. An earphone shell, characterized in that, It includes a main housing and an acoustic functional unit connected to the main housing; The main housing and the acoustic functional part together form the receiving cavity of the headphone housing, and the receiving cavity is adapted to accommodate the electroacoustic components of the headphone; The acoustic functional part is provided with an acoustic channel, which at least partially penetrates the acoustic functional part to communicate the receiving cavity with the outside; part or all of the acoustic channel forms an identification part on the acoustic functional part, which is presented as a designated symbol; The acoustic channel includes a plurality of micropores, wherein at least a portion of the micropores penetrate the acoustic functional part, the plurality of micropores are distributed on the acoustic functional part and arranged in a shape surrounding the designated symbol, and the portion surrounded by the plurality of micropores forms the marking part.

20. An earphone, characterized in that, The device includes an electroacoustic device, a motherboard, and an earphone housing as described in any one of claims 1 to 19, wherein the electroacoustic device is disposed within the receiving cavity, and the motherboard is electrically connected to the electroacoustic device.

21. The earphone according to claim 20, characterized in that, The earphone also includes a detection sensor electrically connected to the motherboard. The detection sensor is disposed inside the earphone housing, and the signal transceiver of the detection sensor is oriented toward the acoustic functional unit to allow the detection signal of the detection sensor to be transmitted through the acoustic functional unit. The detection sensor includes at least one of a biometric sensor and an in-ear sensor.

22. A headphone kit, characterized in that, The headphone kit includes a headphone case and headphones as described in claim 20 or 21.

23. The headphone kit according to claim 22, characterized in that, The headphone kit includes two headphones, and the two headphones are distinguished by their respective markings.

24. The headphone kit according to claim 23, characterized in that, The two earphones have different markings, which are used to indicate that the corresponding earphones are suitable for wearing in the left and right ears, respectively.

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