Acoustic output device and connection assembly

Abstract

The embodiment of the application discloses a device, which comprises two ear hanging components and a back hanging component. The two ear hanging components are respectively hung on the outer sides of the ears of a user. The back hanging component is in a curved shape, is connected with the two ear hanging components, and is arranged on the back of the head of the user. The back hanging component comprises an elastic metal wire, a wire, and an elastic covering body covering the elastic metal wire and the wire.

Description

[0001] Cross-referencing

[0002] This application claims priority to Chinese patent applications filed on April 30, 2020 (application number 202020720246.7), 202020219.X, 202020219.X, 202010546381.9, 202021118294.5, 202021105280.X, 202021105280.X, and 202021693327.9, 2020211693327.9, 20202021. The contents of the above applications are incorporated herein by reference. Technical Field

[0003] This application relates to the field of communication equipment technology, and in particular to acoustic output devices and connection components. Background Technology

[0004] Acoustic output devices (such as headphones) are widely used in people's daily lives, working with electronic devices like mobile phones and computers to provide users with an auditory feast. For in-ear and over-ear headphones, different ear tips or adjustments to the headband size can accommodate different users' ear canals or head sizes. However, ear-hook headphones, due to the inability to adjust the length of the back hook structure, typically cannot fit different head sizes. Furthermore, the back hook structure of ear-hook headphones not only needs to achieve structural connections but also connects to electrical components within the headphones, resulting in a complex structure. Particularly for bone conduction headphones, the conversion of electrical signals into mechanical vibrations, which are then transmitted through the skull, bony labyrinth, inner ear fluid, cochlea, auditory nerve, and auditory cortex, places even higher demands on the back hook structure. It needs to fit snugly against the skull, allowing sound waves to be transmitted directly through the bone to the auditory nerve.

[0005] Therefore, this application provides an acoustic output device and connection assembly that can adapt to different user head sizes, achieve electrical connection between electrical components, have a compact structure, and improve internal structural stability and manufacturing efficiency of the rear-mounted assembly. Summary of the Invention

[0006] One embodiment of this application provides a device. The device includes two ear hook assemblies and a back hook assembly. The two ear hook assemblies are respectively hung on the outside of the user's two ears. The back hook assembly is curved and is used to connect the two ear hook assemblies and wrap around the back of the user's head. The back hook assembly includes an elastic metal wire, a wire, and an elastic covering body that covers the elastic metal wire and the wire.

[0007] One embodiment of this application provides a connection assembly, which includes a substrate, a plurality of circuits, and a cover. The substrate is curved along its length. On a reference cross-section perpendicular to the length direction of the substrate, the plurality of circuits are conformally disposed on the substrate and spaced apart from each other. The plurality of circuits further extend along the length direction of the substrate from a first end to a second end. The cover wraps around the plurality of circuits and the substrate. The plurality of circuits are used to realize electrical connections between electrical devices respectively mounted at the first and second ends of the substrate.

[0008] One embodiment of this application also provides a sound-generating device, which includes a speaker assembly and an ear hook assembly. The ear hook assembly includes a connecting member and an ear hook housing connected to the connecting member. The ear hook housing forms an accommodating space for accommodating a battery assembly or a control circuit assembly. The connecting member includes a first elastic cover, a second elastic cover, and an elastic metal wire. One end of the elastic metal wire is connected to the ear hook housing, and the other end of the elastic metal wire is used to connect to the speaker assembly. At least one through-slot is formed on one side of the first elastic cover, extending along the extending direction of the first elastic cover. The at least one through-slot is used to place the elastic metal wire. The second elastic cover covers the side of the first elastic cover and forms a lead wire channel with the first elastic cover. The lead wire channel is used to place a lead wire connecting the speaker assembly and the battery assembly or the control circuit assembly.

[0009] Additional features will be set forth in part in the description which follows, and will become apparent to those skilled in the art upon consulting the following description and the accompanying drawings, or may be learned by the generation or operation of examples. The features of the invention can be realized and obtained by practice or use of various aspects of the methods, tools, and combinations set forth in the following detailed examples. Attached Figure Description

[0010] This application will be further described by way of exemplary embodiments, which will be described in detail with reference to the accompanying drawings. These embodiments are not limiting; in these embodiments, the same reference numerals denote the same structures, wherein:

[0011] Figure 1 This is an exploded structural diagram of an exemplary device according to some embodiments of this application;

[0012] Figure 2 This is a schematic cross-sectional view of an exemplary rear-mounted component according to some embodiments of this application;

[0013] Figure 3 This is an exploded structural diagram of an exemplary ear hook assembly according to some embodiments of this application;

[0014] Figure 4 This is a schematic diagram of the structure of an exemplary ear hook housing according to some embodiments of this application;

[0015] Figure 5 This is an exploded structural diagram of an ear hook assembly according to some embodiments of this application;

[0016] Figure 6 This is a schematic diagram of the ear hook housing structure according to some embodiments of this application;

[0017] Figure 7 This is a schematic diagram of the decorative bracket near the ear hook housing, according to some embodiments of this application;

[0018] Figure 8 This is a schematic diagram illustrating the principle of the decorative bracket trigger button according to some embodiments of this application;

[0019] Figure 9 This is an exploded view of an exemplary movement module according to some embodiments of this application;

[0020] Figure 10 (a) is a cross-sectional schematic diagram of a reinforcing structure provided on an ear hook housing according to some embodiments of this application;

[0021] Figure 10 (b) is a cross-sectional schematic diagram of a reinforcing structure provided on an ear hook housing according to some embodiments of this application;

[0022] Figure 11 (a) is a top view schematic diagram of a reinforcing structure provided on the ear hook housing according to some embodiments of this application;

[0023] Figure 11 (b) is a top view schematic diagram of a reinforcing structure provided on the ear hook housing according to some embodiments of this application;

[0024] Figure 11 (c) is a top view of a reinforcing structure provided on the ear hook housing according to some embodiments of this application;

[0025] Figure 11 (d) is a top view schematic diagram of a reinforcing structure provided on the ear hook housing according to some embodiments of this application;

[0026] Figure 12 This is an exploded view of an exemplary movement module according to some embodiments of this application;

[0027] Figure 13 This is a frequency response curve diagram corresponding to the reinforcement structure shown in some embodiments of this application;

[0028] Figure 14 This is a top view schematic diagram of the overall structure of the device shown in some embodiments of this application;

[0029] Figure 15 This is an exploded view of the structure of the rear-mounted component according to some embodiments of this application;

[0030] Figure 16 This is a schematic diagram of the ear hook assembly according to some embodiments of this application;

[0031] Figure 17 This is a schematic diagram of the ear hook assembly according to some embodiments of this application;

[0032] Figure 18 This is a schematic diagram of the structure of the first ear hook housing and the second ear hook housing according to some embodiments of this application;

[0033] Figure 19 This is a schematic diagram of the structure of the first ear hook housing and the second ear hook housing according to some embodiments of this application;

[0034] Figure 20 This is a schematic cross-sectional view of the ear hook housing according to some embodiments of this application;

[0035] Figure 21 This is a schematic diagram of the structure of the first ear hook housing and the second ear hook housing according to some embodiments of this application;

[0036] Figure 22 This is a schematic diagram of the ear hook assembly according to some embodiments of this application;

[0037] Figure 23 This is a partial structural diagram of the assembled headphones according to some embodiments of this application;

[0038] Figure 24 This is a schematic diagram of the internal structure of the ear hook housing and the rear hook assembly after disassembly, according to some embodiments of this application;

[0039] Figure 25 This is a schematic diagram of the principle structure of one embodiment of the positioning mechanism according to some embodiments of this application;

[0040] Figure 26 This is a schematic diagram illustrating the principle and structure of an implementation of a positioning mechanism according to some embodiments of this application;

[0041] Figure 27 This is a schematic diagram illustrating the principle and structure of an implementation of a positioning mechanism according to some embodiments of this application;

[0042] Figure 28 This is a schematic diagram illustrating the principle and structure of an implementation of a positioning mechanism according to some embodiments of this application;

[0043] Figure 29 This is a schematic diagram illustrating the principle structure of the guide mechanism provided on the ear hook housing according to some embodiments of this application;

[0044] Figure 30 This is a schematic diagram of the wiring structure between various electrical devices according to some embodiments of this application;

[0045] Figure 31 This is a schematic cross-sectional view of the connecting component according to some embodiments of this application;

[0046] Figure 32 This is a top view of the connection assembly shown in some embodiments of this application;

[0047] Figure 33 This is a schematic diagram of the structure of the substrate according to some embodiments of this application;

[0048] Figure 34 This is a schematic diagram of the cross-sectional structure of the connecting component according to some embodiments of this application;

[0049] Figure 35(a) is a schematic diagram of the orthographic projection structure of the first group of conformal circuits on the substrate according to some embodiments of this application;

[0050] Figure 35(b) is a schematic diagram of the orthographic projection structure of the second set of conformal circuits on the substrate according to some embodiments of this application;

[0051] Figure 36 These are schematic diagrams of the apparatus according to some embodiments of this application;

[0052] Figure 37 This is a disassembled structural diagram of a speaker assembly according to some embodiments of this application;

[0053] Figure 38This is a schematic cross-sectional view of a speaker assembly according to some embodiments of this application;

[0054] Figure 39 This is a schematic cross-sectional view of a speaker assembly according to some embodiments of this application;

[0055] Figure 40 This is a schematic diagram of the disassembled structure of the protective mesh and the annular cover according to some embodiments of this application;

[0056] Figure 41 This is a schematic cross-sectional view of a speaker assembly according to some embodiments of this application;

[0057] Figure 42 This is a disassembled structural diagram of a mesh assembly according to some embodiments of this application;

[0058] Figure 43 This is a cross-sectional structural schematic diagram of the mesh assembly in a bonding state according to some embodiments of this application;

[0059] Figure 44 This is a schematic diagram illustrating the fabrication process of a mesh assembly according to some embodiments of this application;

[0060] Figure 45 This is a schematic diagram illustrating the fabrication process of a mesh assembly according to some embodiments of this application;

[0061] Figure 46 This is a disassembled structural diagram of a vibration assembly according to some embodiments of this application;

[0062] Figure 47 This is a schematic diagram of the cross-sectional structure of the vibration assembly after assembly, according to some embodiments of this application;

[0063] Figure 48 This is a schematic diagram of the disassembled structure of the ear hook assembly according to some embodiments of this application;

[0064] Figure 49 This is a disassembled structural diagram of the connecting components and ear hook housing according to some embodiments of this application;

[0065] Figure 50 This is a schematic diagram of the structure of a second ear hook housing embodiment according to some embodiments of this application;

[0066] Figure 51 This is a disassembled structural diagram of the middle channel component and the pickup assembly embodiment shown in some embodiments of this application;

[0067] Figure 52 This is a schematic diagram of the circuit structure of a control circuit assembly according to some embodiments of this application;

[0068] Figure 53 This is a schematic diagram of the disassembled structure of the ear hook housing according to some embodiments of this application;

[0069] Figure 54 This is a disassembly diagram of the function buttons and waterproof liner according to some embodiments of this application;

[0070] Figure 55 This is a schematic cross-sectional view of the ear hook assembly along the tossing direction of the function button, according to some embodiments of this application.

[0071] Figure 56 This is a schematic diagram showing the relationship between the wind noise threshold of the sound pickup component and its position in a device according to some embodiments of this application. Detailed Implementation

[0072] To more clearly illustrate the technical solutions of 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 merely some examples or embodiments of this application. For those skilled in the art, these drawings can be applied to other similar scenarios without creative effort. Unless obvious from the context or otherwise specified, the same reference numerals in the drawings represent the same structures or operations.

[0073] It should be understood that the terms “system,” “device,” “unit,” and / or “module” used herein are a method of distinguishing different components, elements, parts, sections, or assemblies at different levels. However, if other terms can achieve the same purpose, they may be replaced by other expressions.

[0074] As indicated in this application and claims, unless the context clearly indicates otherwise, the words "a," "an," "an," and / or "the" are not specifically singular and may include plural forms. Generally speaking, the terms "comprising" and "including" only indicate the inclusion of explicitly identified steps and elements, which do not constitute an exclusive list, and the method or apparatus may also include other steps or elements.

[0075] Flowcharts are used in this application to illustrate the operations performed by the system according to embodiments of this application. It should be understood that the preceding or following operations are not necessarily performed precisely in sequence. Instead, the steps can be processed in reverse order or simultaneously. Furthermore, other operations can be added to these processes, or one or more steps can be removed from them.

[0076] The device described in this application embodiment can be applied to acoustic output devices, including hearing aids, hearing bracelets, headphones, speakers, smart glasses, head-mounted displays, and other devices with acoustic output capabilities. The acoustic output device can be fixed near the user's ear by suspension or clipping. When the user wears the acoustic output device, it is located at least on one side of the user's head, close to but not blocking the user's ear. In some alternative embodiments, the outer surface of the acoustic output device may have a hook, and the shape of the hook matches the shape of the auricle, so that the acoustic output device can be worn independently on the user's ear via the hook. The independently worn acoustic output device can communicate with a signal source (e.g., a computer, mobile phone, or other mobile device) via wired or wireless (e.g., Bluetooth). The acoustic output device can be worn on the user's head (e.g., as non-in-ear open-back headphones worn as glasses, headbands, or other means). Simultaneously, the acoustic driver can be close to but not block the ear canal, keeping the user's ear open, allowing the user to hear the sound output from the acoustic output device while also receiving external ambient sounds. For example, acoustic output devices can be positioned around or partially around the user's ears and can transmit sound via air conduction or bone conduction.

[0077] Some embodiments of this application are illustrated by way of example bone conduction ear-hook headphones.

[0078] Figure 1 This is an exploded structural diagram of an exemplary device according to some embodiments of this application.

[0079] In some embodiments, device 10 can be an acoustic output device. The acoustic output device can be attached to a user's head or ear. When device 10 is attached to a user's head, the user's head primarily bears the weight of the acoustic output device 10; while when device 10 is specifically attached to a user's ear, the user's ear primarily bears the weight of the device 10. For example, when device 10 is an ear-hook headphone, the user's ear primarily bears the weight of the device 10 when wearing it. Further, for ear-hook headphones, device 10 can specifically be an air conduction headphone or a bone conduction headphone. In some embodiments, device 10 can also be a pendant or ornament worn on a user's ear.

[0080] like Figure 1 As shown, the device 10 may include two movement modules 20, two ear hook assemblies 30, and a rear hook assembly (connection assembly) 40.

[0081] In some embodiments, the mechanism module 20 is used to contact the user's skin to transmit sound. In some embodiments, when the device 10 is in a wearing state, the two mechanism modules 20 are located on the left and right sides of the user's head, respectively. With the cooperation of the two ear hook assemblies 30 and the back hook assembly 40, the two mechanism modules 20 can clamp the user's head and contact the user's skin. In some embodiments, the mechanism module 20 may include a mechanism housing 21 and a mechanism 22, wherein one end of the mechanism housing 21 is open, and the mechanism 22 is housed within the mechanism housing 21.

[0082] In some embodiments, the core module 20 can be configured as two, both of which can produce sound, facilitating the device 10 to achieve stereo sound effects and thereby improving the user experience of the device 10. In some other application scenarios where stereo sound requirements are not particularly high, such as hearing aids for hearing-impaired patients or prompting for live broadcasts, the device 10 may also be configured with only one core module 20.

[0083] In some embodiments, both ear hook assemblies 30 may be curved for hanging on the outside of the user's ears respectively. The back hook assembly 40 may also be curved for connecting the two ear hook assemblies and wrapping around the back of the user's head to meet the user's wearing needs of the device 10. In some embodiments, one end of each of the two ear hook assemblies 30 is connected to a corresponding mechanism module 20, and both ends of the back hook assembly 40 are connected to the other ends of the two ear hook assemblies 30 away from the mechanism module 20.

[0084] In some embodiments, the rear-mounted assembly 40 includes an elastic metal wire, a wire, and an elastic covering that encapsulates the elastic metal wire and the wire. Figure 1 (Not shown in the image). In some embodiments, the elastic metal wire is bent along its length, allowing the back hook assembly 40 to be wrapped around the back of the user's head. In this case, the elastic metal wire primarily supports the back hook assembly 40 to maintain its basic structural shape. When the user wears the device 10, the back hook assembly 40 can cooperate with the two movement modules 20 and the two ear hook assemblies 30 to provide clamping force, increasing the stability and reliability of the fit. In some embodiments, the material of the elastic metal wire may include, but is not limited to, spring steel, titanium alloy, titanium-nickel alloy, chromium-molybdenum steel, etc.

[0085] In some embodiments, the cover wraps around the elastic metal wire and conductor to protect them from external disturbances, thereby increasing the service life of the rear-mounted component 40. In some embodiments, the cover may be made of materials including, but not limited to, polycarbonate, polyamide, silicone, rubber, etc., and has a soft texture to increase the wearing comfort of the rear-mounted component 40.

[0086] In some embodiments, the device 10 may further include a control circuit assembly and a battery assembly. Figure 1 (Not shown in the image). The control circuit assembly can be used to control the sound output of the movement module 20 (mainly converting electrical signals into mechanical vibrations), and the battery assembly can be used to provide power to the device 10 (e.g., two movement modules 20). In some embodiments, the control circuit assembly and the battery assembly can be housed within the same ear hook assembly 30, or separately within two ear hook assemblies 30; the specific structure will be described in detail later. In some embodiments, both the control circuit assembly and the battery assembly can be connected via conductors (…). Figure 1 (Not shown in the diagram) is connected to two mechanism modules 20. In some embodiments, the device 10 described in this application may also include microphones, pickups, and other microphones, as well as communication elements such as Bluetooth and NFC (Near Field Communication). These can also be connected to control circuit components and battery components via wires to achieve corresponding functions. In some embodiments, the conductor may be a wire, mainly used to achieve electrical connections between various electronic components of the device 10. When there are multiple circuits that need to be electrically connected, the conductor may be provided with multiple strands. Therefore, the above-mentioned conductor can be simply understood as a multi-strand wire.

[0087] In some embodiments, since the device 10 also includes two mechanism modules 20, control circuit components, battery components and other electrical components, and the aforementioned electrical components are often evenly arranged in the two ear hook components 30, that is, the aforementioned electrical components are often evenly distributed at both ends of the rear hook component 40, the circuit design between the aforementioned electrical components often needs to rely on the rear hook component 40, that is, the rear hook component 40 undertakes part of the wiring of the device 10.

[0088] Figure 2 This is a cross-sectional structural schematic diagram of an exemplary rear-mounted component according to some embodiments of this application.

[0089] like Figure 2 As shown, in some embodiments, the rear-mounted assembly 40 may include an elastic metal wire 41, a wire 42, and an elastic covering 43 covering the elastic metal wire 41 and the wire 42.

[0090] In some embodiments, the material of the elastic metal wire 41 may include, but is not limited to, spring steel, titanium alloy, titanium-nickel alloy, chromium-molybdenum steel, etc., and the material of the elastic cover 43 may include, but is not limited to, polycarbonate, polyamide, silicone, rubber, etc., so that the rear hanging component 40 can take into account both wearing comfort and structural rigidity.

[0091] In some embodiments, the elastic cover 43 and the wire 42 can be an integrally formed extruded structure, and the cover 43 is further formed with a wire-passing channel. Figure 2 (Not specified in the text), the elastic metal wire 41 can be threaded through the threading channel. In some embodiments, the threading channel is formed during the extrusion molding process. In some embodiments, since the elastic metal wire 41 is threaded through the threading channel within the cover 43, Figure 2 The area where the elastic metal wire 41 shown is located can be simply regarded as the threading channel within the covering 43.

[0092] In some embodiments, the diameter of the threading channel in its natural state can be smaller than the diameter of the elastic wire 41. In this case, after the elastic wire 41 is inserted into the threading channel, it can remain fixed to the elastic cover 43, thereby preventing the rear hanging assembly 40 from "sinking" due to excessive gaps between the elastic cover 43 and the elastic wire 41. Furthermore, when the user presses the rear hanging assembly 40, the structural compactness of the rear hanging assembly 40 can be increased.

[0093] In some embodiments, the number of conductors 42 may be at least two strands. Each conductor 42 may include a metal wire and an insulating layer covering the metal wire. Figure 2 (Not shown in the image), the insulating layer is mainly used to achieve electrical insulation between metal wires.

[0094] It should be understood that, since the control circuit assembly and the battery assembly can be respectively housed in the two ear hook assemblies 30, and the ear hook assemblies 30 can respectively correspond to the left and right ear hooks of the device 10, not only do the main control circuit board and the battery assembly need to be connected via the wires 42 built into the rear hook assembly 40, but also corresponding to Figure 1 The middle (left) ear hook assembly 30 includes components such as the movement module 20 (specifically, its movement 22) and corresponding... Figure 1 The middle (right) ear hook assembly 30, including its mechanism module 20 (specifically, its mechanism 22), and other components, also need to be further connected via the wires 42 built into the rear hook assembly 40 to the corresponding... Figure 1 The control circuit assembly and battery assembly of the middle (right) ear hook assembly 30 are connected. Therefore, in some embodiments, the wire 42 needs to connect at least the three circuits described above.

[0095] Based on the above detailed description, the rear-mounted component 40 shown in some embodiments of this application can be manufactured according to the following process flow:

[0096] Step 110: Provide an extrusion molding machine and a wire.

[0097] In some embodiments, the extrusion molding equipment may add raw materials for molding the elastic cover 43. In some embodiments, during the extrusion molding process, the raw materials for the elastic cover 43 undergo at least the following stages: melt plasticization, die extrusion, shaping, cooling, and traction. In some embodiments, the number of wires 42 may be at least two strands to facilitate the connection between the various electronic components in the device 10. In some embodiments, each wire 42 may include a metal wire and an insulating layer covering the metal wire to achieve electrical insulation between the metal wires.

[0098] Step 120: Place the wire 42 in the extrusion molding equipment so that the raw material of the elastic coating 43 and the wire can obtain the corresponding first semi-finished product during the extrusion molding process.

[0099] In some embodiments, the extrusion molding equipment can pull the wire 42 so that the elastic cover 43 can cover the wire 42 during the extrusion molding process. In some embodiments, the die head portion of the extrusion molding equipment can be provided with a core so that the aforementioned threading channel can be simultaneously formed inside the elastic cover 43 during the extrusion molding process. In some embodiments, the aforementioned first semi-finished product can specifically be an integral structure of the elastic cover 43 and the wire 42, and the interior of the cover 43 has a threading channel extending generally along its axial direction.

[0100] Step 130: According to the usage requirements of the rear-mounted components, the first semi-finished product is further cut into a second semi-finished product with a corresponding length.

[0101] In some embodiments, the actual length of the second semi-finished product may be slightly greater than its length used for the rear-mounted component, that is, the second semi-finished product still has a certain margin at this time, so as to facilitate subsequent processing steps.

[0102] Step 140: The elastic metal wire 41 is threaded through the threading channel of the second semi-finished product to obtain the rear hanging component 40.

[0103] In some embodiments, the back-hook assembly obtained in step 140 is essentially only a semi-finished product, and further processing is required. In some embodiments, after step 140, the back-hook assembly 40 needs to be shaped into a curved structure with a certain shape to adapt to the back of the user's head. In some embodiments, the two ends of the back-hook assembly 40 also need to be processed accordingly to facilitate a structural fixation connection between it and the ear hook assembly 30, and to realize the circuit connection between the aforementioned control circuit assembly, battery assembly, and other components.

[0104] By employing the above method, the manufacturing process of the rear-mounted component 40 utilizes an extrusion molding process, allowing the second semi-finished product (specifically, an integral structure of the elastic cover 43 and the wire 42) produced in one step during processing to have a very long dimension. Furthermore, the interior of the cover has a wire-threading channel that extends substantially along its axial direction. The semi-finished product is then cut into segments of appropriate length to facilitate subsequent processing steps, such as threading the elastic metal wire through the wire-threading channel. This effectively improves the manufacturing efficiency of the rear-mounted component, thereby increasing product capacity and profitability.

[0105] Figure 3 This is an exploded structural diagram of an exemplary ear hook assembly according to some embodiments of this application. Figure 4 This is a schematic diagram of the structure of an exemplary ear hook housing according to some embodiments of this application.

[0106] like Figure 3 As shown, in some embodiments, the ear hook assembly 30 may include an ear hook housing 31 and a decorative element 32, which can be connected by one or a combination of assembly methods such as adhesive bonding, snap-fit, and threaded connection. In some embodiments, when the device 10 is in the wearing state, the decorative element 32 is located on the side of the ear hook housing 31 away from the movement module 20, that is, on the outside of the device 10, so that the decorative element 32 can decorate the ear hook housing 31, thereby increasing the aesthetic appearance of the device 10. In some embodiments, the decorative element 32 may protrude from the ear hook housing 31 or be embedded in the ear hook housing 31.

[0107] like Figure 3 and Figure 4 As shown, in some embodiments, the ear hook housing 31 may include an earphone fixing part 311, a bending transition part 312, and a receiving compartment 313 connected in sequence. In some embodiments, the earphone fixing part 311 is used to fix the core module 20, and the bending transition part 312 is used to connect the receiving compartment 313 and the earphone fixing part 311, and is bent to hang on the outside of the ear.

[0108] In some embodiments, the end of the receiving cavity 313 away from the earphone fixing part 311 can be connected to the back hook assembly 40 by one or a combination of assembly methods such as adhesive bonding, snap-fit, and threaded connection, so as to facilitate the assembly between the ear hook assembly 30 and the back hook assembly 40. In some embodiments, one end of the receiving cavity 313 is open to accommodate the control circuit assembly 60 or the battery assembly. In some embodiments, the ear hook housing 31 may also include a cavity cover 314, which covers the open end of the receiving cavity 313, and the two can cooperate with each other so that the cavity cover 314 and the ear hook housing 31 together form a cavity structure.

[0109] In some embodiments, the ear hook assembly 30 may also include a control circuit assembly 60 or a battery assembly. Figure 3 The control circuit assembly 60 is shown; the battery assembly is not shown. In some embodiments, the control circuit assembly and the battery assembly may be housed in the same ear hook assembly 30, or they may be housed in two separate ear hook assemblies 30. In some embodiments, when the accommodating compartment 313 is primarily used to house the control circuit assembly 60, such as... Figure 3 As shown, the ear hook assembly 30 may also include a control button 38 and an interface 39. In some embodiments, the control button 38 can be used to turn the device 10 on and off, adjust the volume, and so on, while the interface 39 can be used to perform data transmission, charging, and other functions. In some embodiments, the control button 38 and the interface 39 can be located on the receiving compartment 313 to facilitate connection between the two and the control circuit assembly 60, thereby shortening the wiring distance. In this case, the control button 38 and the interface 39 can be partially exposed outside the ear hook housing 31 to facilitate user operation.

[0110] In some embodiments, the interface 39 may include, but is not limited to, a USB Type-A interface, a USB Type-B interface, a USB Type-C interface, a Micro-USB Type-A interface, a Micro-USB Type-B interface, a Micro-USB Type-AB interface, a Mini-USB Type-A interface, a Mini-USB Type-B interface, or any combination thereof.

[0111] In some embodiments, the ear hook assembly 30 may further include an indicator light 35. The indicator light 35 may be disposed on the receiving compartment 313 to facilitate connection with the control circuit assembly 60, thereby shortening the wiring distance. In some embodiments, the indicator light 35 may be partially exposed outside the ear hook housing 31, such as... Figure 3 As shown, it can also specifically include an LED light source concealed inside the ear hook housing 31 and a light guide partially exposed outside the ear hook housing 31. Figure 3 and Figure 4 (Not shown in the image). Therefore, in some embodiments, the indicator light 35 can alert the user when the device 10 is charging, has low battery, or is otherwise in use.

[0112] It should be noted that when the device 10 is worn, it hangs on the outside of the ear. Specifically, the mechanism module 20 is generally located at the front of the ear, while the control circuit assembly 60 or battery assembly is generally located at the back of the ear. In this case, the ear acts as a fulcrum to support the device 10, causing the ear to bear most of the weight of the device 10. This can cause discomfort after prolonged wear. Therefore, in some embodiments, the ear hook housing 31 (especially the bending transition portion 312) is generally made of a softer material to improve the wearing comfort of the device 10.

[0113] In some embodiments, the material of the ear hook shell 31 may include, but is not limited to, polycarbonate (PC), polyamides (PA), acrylonitrile butadiene styrene (ABS), polystyrene (PS), high impact polystyrene (HIPS), polypropylene (PP), polyethylene terephthalate (PET), polyvinyl chloride (PVC), polyurethanes (PU), polyethylene (PE), phenolic resin (PF), urea-formaldehyde resin (UF), melamine-formaldehyde resin (MF), silicone, etc.

[0114] In some embodiments, because the ear hook housing 31 is relatively soft, it may lack rigidity and be unable to maintain its structure under external force, or even break due to insufficient strength. Therefore, in some embodiments, the ear hook housing 31 may (at least in the bending transition portion 312) incorporate an elastic metal wire. Figure 3 and Figure 4 (Not shown in the image) to improve the strength of the ear hook housing 31, thereby increasing its reliability. In some embodiments, the material of the elastic metal wire may include, but is not limited to, spring steel, titanium alloy, titanium-nickel alloy, chromium-molybdenum steel, etc. In this case, the ear hook housing 31 can be a metal insert injection-molded integral structural component.

[0115] Based on the detailed description above, since the mechanism module 20 is located at one end of the ear hook assembly 30 (specifically, at the end where the earphone fixing part 311 is located), and the control circuit assembly 60 or battery assembly is located at the other end of the ear hook assembly 30 (specifically, at the other end where the receiving compartment 313 is located), when the mechanism module 20 is connected to the control circuit assembly 60 and the battery assembly 50 via wires, the wires must at least pass through the area where the bending transition part 312 is located. Generally, for the sake of the aesthetic appearance of the device 10, the wires are not exposed outside the ear hook housing 31, but are threaded inside the ear hook housing 31, so that at least the bending transition part 312 covers the wires. However, since the wires are generally soft, threading the wires inside the ear hook housing 31 can be quite difficult.

[0116] Therefore, in some embodiments, such as Figure 4 As shown, the ear hook housing 31 has a first groove 315 at least on the bent transition portion 312. The first groove 315 can be used for wiring to reduce the difficulty of threading wires through the ear hook housing 31. In some embodiments, the first groove 315 can be specifically provided on one side of the ear hook housing 31. In this case, the decorative piece 32 can be embedded and fixed in the first groove 315 corresponding to the bent transition portion 312 to form a wiring channel. Figure 3 (Not marked in the text) This allows the wires to extend from the core module 20 through the wiring channel into the receiving compartment 313, facilitating the connection of the core module 20 with the control circuit assembly 60 and the battery assembly 50. In some embodiments, when the wires pass through the first groove 315 into the ear hook housing 31, the decorative piece 32 can cover the wires to prevent them from being exposed outside the ear hook housing 31. In this case, the decorative piece 32 not only decorates the ear hook housing 31 but also conceals the wires, enabling the decorative piece 32 to serve a dual purpose.

[0117] In some embodiments, the decorative part 32 may include, but is not limited to, stickers, plastic parts, metal parts, etc., and may be printed with geometric patterns, cartoon patterns, logo patterns, etc., or coated with fluorescent materials, reflective materials, etc., to achieve the corresponding decorative effect.

[0118] In some embodiments, such as Figure 3 As shown, the decorative element 32 may include a decorative bracket 321 and a decorative strip 322. In some embodiments, such as Figure 3 and Figure 4 As shown, the decorative bracket 321 and the bending transition portion 312 are respectively bent, so that the decorative bracket 321 and the first groove 315 on the bending transition portion 312 can cooperate to form a wiring channel. In some embodiments, when the decorative bracket 321 is embedded and fixed in the first groove 315 corresponding to the bending transition portion 312, the wiring channel allows the wire to extend from the mechanism module 20 to the receiving compartment 313. In some embodiments, the decorative strip 322 is embedded in the first groove 315 and is attached and fixed to the decorative bracket 321. At this time, the decorative bracket 321 can be a plastic part and can be assembled with the ear hook housing 31 by gluing and / or snap-fitting.

[0119] In some embodiments, the decorative strip 322 can be a sticker and can be glued to the decorative bracket 321. When the user wants to change the decorative effect of the decorative element 32, the user can directly replace the decorative strip 322 without removing the entire decorative element 32 from the ear hook housing 31. Of course, in some other embodiments, such as Figure 8As shown, the decorative bracket 321 may also have a second groove 3211 on the side facing the ear hook housing 31, so that when the decorative bracket 321 is embedded and fixed in the first groove 315, the second groove 3211 and the first groove 315 cooperate with each other to form a wiring channel.

[0120] In some embodiments, the bottom of the first groove 315 may have a recess 316 near the end of the decorative strip 322, allowing a user to press the decorative strip 322 into the recess 316, causing the end of the decorative strip 322 to pop out of the first groove 315 for easy replacement. In some embodiments, the first groove 315 may further extend into the receiving compartment 313, and the recess 316 may be disposed on the receiving compartment 313. In some embodiments, the recess 316 may be located outside the area covered by the decorative bracket 321 over the first groove 315, and the decorative strip 322 may be fitted and fixed to the decorative bracket 321, covering the recess 316. In this case, the overall length of the decorative strip 322 may be greater than the overall length of the decorative bracket 321.

[0121] In some embodiments, the decorative bracket 321 and the decorative strip 322 can also be integrally molded structural components. The decorative bracket 321 and the decorative strip 322 can be made of different materials, and both can be injection molded in two colors, allowing the decorative bracket 321 to provide support and the decorative strip 322 to serve a decorative function. In this case, the overall length of the decorative strip 322 can be greater than or equal to the overall length of the decorative bracket 321.

[0122] like Figure 4As shown, in some embodiments, the first groove 315 can be divided into a first sub-groove segment 3151 located on the bent transition portion 312, a second sub-groove segment 3152 located on the earphone fixing portion 311, and a third sub-groove segment 3153 located on the receiving compartment 313. In some embodiments, the depth of the first sub-groove segment 3151 can be greater than the depth of the second sub-groove segment 3152 and the third sub-groove segment 3153, so that the first sub-groove segment 3151 is mainly used to accommodate the decorative bracket 321 and realize wiring, while the second sub-groove segment 3152 and the third sub-groove segment 3153 are mainly used to accommodate the decorative strip 322. In other words, the decorative strip 322 can extend further into the second sub-groove segment 3152 and the third sub-groove segment 3153 in addition to being located in the first sub-groove segment 3151. At this time, the recess 316 can be provided in the third sub-groove segment 3153. In some embodiments, the depth of the second sub-slot 3152 may be equal to the depth of the third sub-slot 3153, and after the decorative bracket 321 is embedded and fixed to the first sub-slot 3151, the side of the decorative bracket 321 facing away from the ear hook housing 31 may be substantially flush with the bottom of the second sub-slot 3152 and the third sub-slot 3153, thereby allowing the decorative strip 322 to be flatly attached to the earphone fixing part 311, the decorative bracket 321 and the receiving compartment 313.

[0123] In some embodiments, the bonding strength between the decorative strip 322 and the decorative bracket 321 may be less than the fixing strength between the decorative bracket 321 and the bending transition portion 312. In some embodiments, when the decorative strip 322 and the decorative bracket 321 are glued together, the bonding strength may refer to the adhesive strength between the two. In this case, the magnitude of the bonding strength may mainly depend on the roughness of the surfaces where the decorative bracket 321 and the decorative strip 322 are bonded, and / or the amount (and / or tackiness) of the adhesive between the decorative strip 322 and the decorative bracket 321. In some embodiments, when the decorative bracket 321 and the bending transition portion 312 are snapped together, the bonding strength may refer to the snapping strength between the two. In this case, the bonding strength may mainly depend on the fit clearance between the decorative bracket 321 and the bending transition portion 312, and / or the depth of the snapping together. Therefore, in some embodiments, when the decorative bracket 321 and the ear hook housing 31 are mainly assembled by snap-fit, the two ends of the decorative strip 322 can be glued to the receiving compartment 313 and the earphone fixing part 311 respectively, which can further fix the decorative bracket 321. When the decorative strip 322 is replaced to change the decorative effect of the decorative part 32, the decorative bracket 321 will not be lifted up due to the excessive adhesion between it and the decorative strip 322.

[0124] Figure 5 This is an exploded structural diagram of an ear hook assembly according to some embodiments of this application. Figure 6 This is a schematic diagram of the ear hook housing according to some embodiments of this application.

[0125] In some embodiments, such as Figure 5 As shown, the ear hook assembly 30 may further include a button 36, and the ear hook housing 31 may also have a button adapter hole 317. In some embodiments, the decorative bracket 321 is mounted and fixed on one side of the ear hook housing 31, and the button 36 is located on the other side of the ear hook housing 31 away from the decorative bracket 321 and is exposed through the button adapter hole 317. In some embodiments, the decorative bracket 321 further extends in a cantilever form above the button 36 exposed through the button adapter hole 317, and can trigger the button 36 under external pressure. In some embodiments, the button 36 can replace the control key 38 described above to simplify the structure of the device 10, or it can coexist with the control key 38 described above, and can be used to implement functions such as play / pause and AI wake-up to expand the interactive capabilities of the device 10. In some embodiments, the button adapter hole 317 may be opened in the earphone fixing part 311, so that the user can press the button 36 in the earphone fixing part 311.

[0126] In some embodiments, the ear hook assembly 30 may further include a seal 37 disposed between the button 36 and the earphone fixing part 311. In some embodiments, the material of the seal 37 may be, but is not limited to, silicone, rubber, etc. This configuration can both increase the waterproof performance of the earphone fixing part 311 in the area where the button 36 is located and improve the tactile feel of the button 36.

[0127] Similarly, in some embodiments, when the core module 20 is located at one end of the ear hook assembly 30 (specifically, at the end where the earphone fixing part 311 is located) and the battery assembly 50 is located at the other end of the ear hook assembly 30 (specifically, at the other end where the receiving compartment 313 is located), the wire must at least pass through the area where the bending transition part 312 is located, so that the core module 20 can be connected to the battery assembly 50 via the wire. Therefore, in some embodiments, such as... Figure 4 As shown, the ear hook housing 31 has a first groove 315 on at least one side of the earphone fixing part 311 and the bending transition part 312 near the decorative bracket 321. The first groove 315 can be used for wiring to reduce the difficulty of threading wires through the ear hook housing 31. In some embodiments, one end of the first groove 315 communicates with the button adapter hole 317, so that when the decorative bracket 321 is embedded and fixed in the first groove 315, the decorative bracket 321 can also cover the button adapter hole 317 to facilitate triggering the button 36. In this way, the decorative part 32 can not only decorate the ear hook housing 31 and cover the wires, but also cover and trigger the button 36, so that the decorative part 32 can achieve "one piece for four uses".

[0128] It should be understood that when Figure 3The storage compartment 313 shown is mainly used to accommodate the control circuit assembly 60. Figure 5 The shown accommodating compartment 313 can primarily be used to house the battery assembly 50. At this time, if... Figure 3 The ear hook assembly 30 shown corresponds to the left ear hook of device 10. Figure 5 The ear hook assembly 30 shown can correspond to the right ear hook of the device 10; conversely, if Figure 3 The ear hook assembly 30 shown corresponds to the right ear hook of device 10. Figure 5 The ear hook assembly 30 shown corresponds to the left ear hook of device 10. In other words, the control circuit assembly 60 and the battery assembly 50 can be respectively housed within the two ear hook assemblies 30. This arrangement not only increases the capacity of the battery assembly 50 to improve the battery life of device 10, but also balances the weight of device 10 to improve wearing comfort. The control circuit assembly 60 and the battery assembly 50 can be connected via wires built into the rear hook assembly 40; the specific structure will be described in detail later.

[0129] like Figure 6 As shown, in some embodiments, the first groove 315 can be divided into a first sub-groove segment 3151 located on the bending transition portion 312 and a second sub-groove segment 3152 located on the earphone fixing portion 311. In some embodiments, the depth of the first sub-groove segment 3151 can be greater than the depth of the second sub-groove segment 3152, so that the first sub-groove segment 3151 is mainly used for wiring, and the second sub-groove segment 3152, together with the first sub-groove segment 3151, is used to accommodate the decorative bracket 321. In this case, the button adapter hole 317 can be provided in the second sub-groove segment 3152, that is, the projections of the two on the earphone fixing portion 311 at least partially overlap. In some embodiments, the first groove 315 can also be divided into a third sub-groove segment 3153 located on the receiving compartment 313, and the third sub-groove segment 3153 can also be provided with a recess 316. The depth of the second sub-groove segment 3152 can be greater than the depth of the third sub-groove segment 3153, so that the third sub-groove segment 3153 is mainly used to accommodate the decorative strip 322. In other words, the decorative strip 322, in addition to being located within the first sub-slot 3151 and the second sub-slot 3152, can further extend into the third sub-slot 3153. At this time, after the decorative bracket 321 is embedded and fixed in the first sub-slot 3151, the side of the decorative bracket 321 facing away from the ear hook housing 31 can be roughly flush with the bottom of the third sub-slot 3153, thereby allowing the decorative strip 322 to be flatly attached to the earphone fixing part 311, the decorative bracket 321, and the receiving compartment 313; and the decorative bracket 321 can form a cantilever at the corresponding button adapter hole 317 in the second sub-slot 3152.

[0130] Figure 7This is a schematic diagram of the structure of the decorative bracket near the ear hook housing, according to some embodiments of this application. Figure 8 This is a schematic diagram illustrating the principle of the decorative bracket trigger button according to some embodiments of this application.

[0131] like Figure 7 and Figure 8 As shown, in some embodiments, the decorative bracket 321 may include a fixing portion 3212 corresponding to the first sub-slot segment 3151 and a pressing portion 3213 corresponding to the second sub-slot segment 3152. The thickness of the fixing portion 3212 is greater than the thickness of the pressing portion 3213, such that the fixing portion 3212 is mainly used for assembling the decorative bracket 321 and the ear hook housing 31, and the pressing portion 3213 is mainly used for triggering the button 36. In some embodiments, when the decorative bracket 321 has a second groove 3211 on the side facing the ear hook housing 31, the second groove 3211 may be disposed on the fixing portion 3212.

[0132] In some embodiments, the decorative bracket 321 may further include a connecting portion 3214 connecting the fixing portion 3212 and the pressing portion 3213. The connecting portion 3214 bends and extends away from the ear hook housing 31 relative to the fixing portion 3212, while the pressing portion 3213 bends and extends closer to the ear hook housing 31 relative to the connecting portion 3214. In this case, the connecting portion 3214 causes the pressing portion 3213 to be suspended relative to the fixing portion 3212, and there is a certain distance between the pressing portion 3213 and the fixing portion 3212. In some embodiments, the distance between the pressing portion 3213 and the fixing portion 3212 may be greater than or equal to the trigger stroke of the button 36, which can effectively improve the problem of the other end of the decorative bracket 321 tilting up when the user presses one end of the decorative bracket 321 (specifically, the end where the pressing portion 3213 is located).

[0133] In some embodiments, a button protrusion 3215 may be provided on the side of the pressing part 3213 near the ear hook housing 31, so that the button protrusion 3215 can trigger the button 36 when the pressing part 3213 is pressed by an external force. In some embodiments, the projections of the button protrusion 3215 and the button 36 on the earphone fixing part 311 at least partially overlap, and the effective contact area between the button protrusion 3215 and the button 36 is smaller than the effective contact area between the pressing part 3213 and the button 36. This configuration can reduce the difficulty of triggering the button 36, especially when a seal 37 is provided between the button 36 and the earphone fixing part 311 (because the button 36 needs the seal 37 to deform first to be triggered). Based on the relationship F∝ε·S, under the same external force F applied by the user, the smaller the effective area S of the area where the seal 37 needs to deform, the greater the deformation ε of the seal 37, and thus the easier it is to trigger the button 36. Obviously, compared to the pressing part 3213, the button protrusion 3215 can reduce the aforementioned effective area.

[0134] In some embodiments, the decorative bracket 321 may also be provided with a stop portion 3216 at its end near the earphone fixing portion 311. The stop portion 3216 forms a stop with the earphone fixing portion 311 away from the inner surface of the decorative bracket 321, to prevent the end of the decorative bracket 321 from prying up from the first groove 315, especially under external force. Figure 8 As shown, in some embodiments, the stop portion 3216 may be specifically located at the end of the pressing portion 3213 away from the fixing portion 3212. In this case, due to the stopping effect between the stop portion 3216 and the earphone fixing portion 311, after the decorative bracket 321 deforms under external force and triggers the button 36, the decorative bracket 321 will not tilt up due to excessive elastic recovery.

[0135] See again Figure 3 or Figure 7 In some embodiments, the decorative bracket 321 may also have an overlapping portion 3217 at one end near the receiving compartment 313 (that is, the other end away from the pressing portion 3213). In some embodiments, the thickness of the overlapping portion 3217 is less than the thickness of the fixing portion 3212, so as to structurally avoid the reinforcing structure of the ear loop housing 31 (specifically located between the bending transition portion 312 and the receiving compartment 313).

[0136] Figure 9 This is an exploded structural diagram of an exemplary movement module according to some embodiments of this application.

[0137] As shown in Figure 9, in some embodiments, the mechanism module 20 may include a mechanism housing 21 and a mechanism 22. One end of the mechanism housing 21 is open, and an ear hook housing 31 (specifically, an earphone fixing part 311) covers the open end of the mechanism housing 21 to form a cavity structure for accommodating the mechanism 22. In this case, the ear hook housing 31 acts as a cover for the mechanism housing 21. Compared to the plug-in assembly method of the ear hook structure and the mechanism structure in related technologies, the cover assembly method of the ear hook housing 31 and the mechanism housing 21 shown in this embodiment can improve the stress problem at the plug-in point of the ear hook structure and the mechanism structure in related technologies, thereby increasing the reliability of the device 10.

[0138] It should be noted that, Figure 9 The ear hook housing 31 shown in the diagram is mainly for the purpose of describing the relative positional relationship between the ear hook housing 31 and the movement housing 21, and thus implicitly indicating a possible assembly method between the ear hook housing 31 and the movement housing 21.

[0139] In some embodiments, the mechanism 22 can be directly or indirectly fixed within the mechanism housing 21, so that the mechanism 22 vibrates under the excitation of an electrical signal, causing the mechanism housing 21 to vibrate accordingly. When the user wears the device 10, the skin contact area of ​​the mechanism housing 21 can contact the user's skin, allowing the aforementioned vibration to be transmitted through the skull to the auditory nerve, thereby enabling the user to hear the sound played by the device 10. In some embodiments, the mechanism module 20 may further include a mechanism support 23 for fixing the mechanism 22 within the mechanism housing 21.

[0140] For bone conduction headphones, a flatter frequency response curve generally indicates better sound quality. Generally, greater material stiffness results in less deformation under stress, which facilitates higher frequency resonance. Therefore, to achieve better sound quality, the stiffness of the core housing 21 can be maximized. In some embodiments, the material of the core housing 21 may include, but is not limited to, a mixture of polycarbonate, polyamide, acrylonitrile-butadiene-styrene copolymer, and glass fiber or carbon fiber, or any combination thereof. In some embodiments, the core housing 21 may be made of a mixture of carbon fiber and polycarbonate in a certain proportion, or a mixture of glass fiber and polycarbonate in a certain proportion, or a mixture of glass fiber and polyamide in a certain proportion. In other embodiments, the core housing 21 may be made of a mixture of carbon fiber, glass fiber, and polycarbonate in a certain proportion. Adding different proportions of carbon fiber and / or glass fiber results in different elastic moduli and thus different stiffnesses in the core housing 21. For example, by adding 20%-50% glass fiber to polycarbonate, the elastic modulus of the material can reach 6-8 GPa.

[0141] Based on the above description, on the one hand, the ear hook shell 31 (especially the earphone fixing part 311) is part of the mechanism module 20 to form a cavity structure that accommodates the mechanism 22; on the other hand, in order to improve the wearing comfort of the device 10, the ear hook shell 31 is generally made of a softer material, resulting in lower rigidity. In some embodiments, the ear hook shell 31 is generally made of a softer material (i.e., a material with a low elastic modulus, such as polycarbonate, polyamide, etc., whose elastic modulus is mostly 2-3 GPa), while the mechanism shell 21 is generally made of a harder material (i.e., a material with a high elastic modulus, such as polycarbonate with 20%-50% glass fiber added, the elastic modulus of which can reach 6-8 GPa, etc.). With this configuration, when the ear hook housing 31 covers the core housing 21 to form a cavity structure accommodating the core 22, the stiffness of the ear hook housing 31 (especially the headphone fixing part 311) is less than that of the core housing 21, making bone conduction headphones prone to sound leakage, thus affecting the user experience. Furthermore, after the ear hook housing 31 and the core housing 21 are connected, the difference in stiffness between the two can easily lead to resonance at relatively low frequencies.

[0142] Generally, the resonant frequency of a structure is related to its stiffness, and for the same mass, the greater the stiffness, the higher the resonant frequency. The stiffness K of a structure is related to its material (specifically, its elastic modulus) and structural features. Generally, the greater the elastic modulus E of the material, the greater the stiffness K; the greater the thickness t of the structure, the greater the stiffness K; and the smaller the area S of the structure, the greater the stiffness K. These relationships can be simply described by the formula K∝(E·t) / S. Therefore, increasing the elastic modulus E of the material, increasing the thickness t of the structure, decreasing the area S of the structure, or a combination thereof, can increase the stiffness K of the structure, thereby increasing the resonant frequency.

[0143] In some embodiments, when the elastic modulus of the core housing 21 is greater than that of the ear hook housing 31, the earphone fixing part 311 may be provided with a reinforcing structure, such that the ratio of the difference between the stiffness K1 of the skin contact area of ​​the core housing 21 and the stiffness K2 of the earphone fixing part 311 to the stiffness K1 of the skin contact area of ​​the core housing 21 is less than or equal to a preset proportional threshold. For example, the preset proportional threshold may be 10%, that is, (K1-K2) / K1≤10%, or K2 / K1≥90%. This setting can ensure that the core housing 21 has sufficient stiffness so that its resonant frequency is located in the highest possible high-frequency region, and can also reduce the stiffness difference between the earphone fixing part 311 and the core housing 21 to increase the resonant frequency of the structure and improve the aforementioned sound leakage.

[0144] Figure 10 (a) is a cross-sectional schematic diagram of a reinforcing structure provided on an ear hook housing according to some embodiments of this application. Figure 10 (b) is a cross-sectional view of a reinforcing structure provided on an ear hook housing according to some embodiments of this application.

[0145] like Figure 10 (a) or Figure 10 As shown in (b), the core housing 21 may include a bottom wall 211 and an annular peripheral wall 212. The bottom wall 211 is the skin contact area of ​​the core housing 21, and one end of the annular peripheral wall 212 is integrally connected to the bottom wall 211. In other words, the bottom wall 211 is used for contact with the user's skin. In some embodiments, the earphone fixing part 311 may further include a fixing body 3111 connected to the bending transition part 312 and an annular flange 3112 integrally connected to the fixing body 3111 and extending towards the core housing 21. The annular flange 3112 and the other end of the annular peripheral wall 212 away from the bottom wall 211 abut against each other, and the two can be connected by adhesive bonding or a combination of adhesive bonding and snap-fit.

[0146] In some embodiments, the bottom wall 211 may be rectangular, square, circular, elliptical, or quasi-elliptical (and...). Figure 11 The shape of the earphone fixing part 311 shown is similar to any of the following: In some embodiments, the annular peripheral wall 212 may be perpendicular to the bottom wall 211, meaning the area of ​​the opening end of the mechanism housing 21 is equal to the area of ​​the bottom wall 211. The annular peripheral wall 212 may also be tilted outwards relative to the bottom wall 211 at an angle (e.g., an angle less than or equal to 30°), meaning the area of ​​the opening end of the mechanism housing 21 is greater than the area of ​​the bottom wall 211.

[0147] Some embodiments of this application are illustrated by taking an example where the bottom wall 211 is approximately elliptical and the annular peripheral wall 212 is tilted outward at 10° relative to the bottom wall 211. With this configuration, while ensuring a certain level of wearing comfort (because the bottom wall 211, as the skin contact area of ​​the movement housing 21, will come into contact with the user's skin, its area should not be too small), reducing the area of ​​the bottom wall 211 can increase the resonant frequency of the movement housing 21.

[0148] In some embodiments, such as Figure 10As shown in (a), the reinforcing structure 318 can be an arc-shaped structure disposed between the fixing body 3111 and the annular flange 3112, i.e., it is chamfered. In some embodiments, the structure of the earphone fixing part 311 may only include the fixing body 3111 and the arc-shaped reinforcing structure 318. In this case, since the dimension of the annular flange 3112 in the thickness direction of the earphone fixing part 311 is generally small, the annular flange 3112 and the aforementioned arc-shaped structure can be integrated. With this configuration, the effective area of ​​the earphone fixing part 311 is reduced by the aforementioned arc-shaped structure, which can increase the rigidity of the earphone fixing part 311 and thereby reduce the rigidity difference between the earphone fixing part 311 and the core housing 21. It should be noted that the dimensions of the aforementioned arc-shaped structure can be reasonably designed according to the rigidity requirements of the earphone fixing part 311, and are not limited here.

[0149] In some embodiments, such as Figure 10 As shown in (b), the reinforcing structure 318 can be a thickened layer integrally formed with the fixing body 3111, that is, a thickening treatment. In some embodiments, the material of the thickened layer can be the same as the material of the ear hook shell 31, for example, the material of the thickened layer can be any one of polycarbonate, polyamide, and acrylonitrile-butadiene-styrene copolymer. In some embodiments, the reinforcing structure 318 can be located on the side of the fixing body 3111 close to the core shell 21, or on the other side of the fixing body 3111 away from the core shell 21, or of course, on both sides of the fixing body 3111. In some embodiments, the structure of the earphone fixing part 311 can only include the fixing body 3111 and the reinforcing structure 318 formed by the thickened layer. In this case, since the size of the annular flange 3112 in the thickness direction of the earphone fixing part 311 is generally small, the annular flange 3112 and the aforementioned thickened layer can be integrated. With this configuration, the aforementioned thickened layer increases the effective thickness of the earphone fixing part 311, thereby increasing its rigidity and reducing the rigidity difference between the earphone fixing part 311 and the core housing 21. It should be noted that the dimensions of the aforementioned thickened layer can be reasonably designed according to the rigidity requirements of the earphone fixing part 311, and are not limited here.

[0150] In other embodiments, the reinforcing structure 318 may also be a metal component. In some embodiments, the material of the metal component may include, but is not limited to, aluminum alloy, magnesium alloy, titanium alloy, nickel alloy, chromium-molybdenum steel, stainless steel, etc. In this case, the reinforcing structure 318 and the earphone fixing part 311 can be a metal insert injection-molded integral structural component. With this configuration, the metal component can effectively increase the rigidity of the earphone fixing part 311, thereby reducing the rigidity difference between the earphone fixing part 311 and the core housing 21. It should be noted that the material, size, and other parameters of the aforementioned metal component can be reasonably designed according to the rigidity requirements of the earphone fixing part 311, and are not limited here.

[0151] Figure 11 (a) is a top view of a reinforcing structure provided on an ear hook housing according to some embodiments of this application. Figure 11 (b) is a top view of a reinforcing structure provided on an ear hook housing according to some embodiments of this application. Figure 11 (c) is a top view of a reinforcing structure provided on the ear hook housing according to some embodiments of this application. Figure 11 (d) is a top view of a reinforcing structure provided on the ear hook housing according to some embodiments of this application.

[0152] In some embodiments, such as Figure 11 (a) Figure 11 (b) Figure 11 (c) or Figure 11 As shown in (d), the reinforcing structure 318 can also be a reinforcing rib provided on the earphone fixing part 311, mainly distributed on the side of the earphone fixing part 311 near the core housing 21. In some embodiments, the number of the reinforcing ribs can be multiple, and the multiple reinforcing ribs can be arranged as follows: Figure 11 (a) and Figure 11 The side-by-side arrangement shown in (b) or as shown in the figure Figure 11 The grid-like arrangement shown in (c) is also possible; multiple reinforcing ribs can also be arranged around a preset reference point on the earphone fixing part 311 as a center. Figure 11 The radial arrangement is shown in (d). In some embodiments, the material of the reinforcing ribs can be the same as that of the ear hook shell 31, for example, the material of the reinforcing ribs can also be any one of polycarbonate, polyamide, and acrylonitrile-butadiene-styrene copolymer. With this arrangement, compared to injection molding a metal part into the earphone fixing part 311 or directly thickening the earphone fixing part 311, providing reinforcing ribs on the earphone fixing part 311 can both increase the rigidity of the earphone fixing part 311 and take into account the weight of the earphone fixing part 311.

[0153] In some embodiments, such as Figure 11(a) Figure 11 (b) Figure 11 (c) and Figure 11 As shown in (d), the earphone fixing part 311 may have a major axis direction (as indicated by the dotted line X in the figure) and a minor axis direction (as indicated by the dotted line Y in the figure). The dimension of the earphone fixing part 311 along the major axis direction may be larger than its dimension along the minor axis direction. The distribution of the reinforcing ribs will be described exemplarily below.

[0154] like Figure 11 As shown in (a), in some embodiments, multiple reinforcing ribs may extend along the long axis in a strip-like manner and be arranged side by side along the short axis. In this case, the reinforcing structure 318 can be simply regarded as the long-side reinforcement of the earphone fixing part 311.

[0155] like Figure 11 As shown in (b), in some embodiments, multiple reinforcing ribs may extend in a strip-like manner along the short axis and be arranged side by side along the long axis. In this case, the reinforcing structure 318 can be simply regarded as the short-side reinforcement of the earphone fixing part 311.

[0156] like Figure 11 As shown in (c), in some embodiments, multiple reinforcing ribs can be arranged along the long axis and short axis respectively to form a grid. In this case, the reinforcing structure 318 can be simply regarded as the cross reinforcement of the earphone fixing part 311.

[0157] like Figure 11 As shown in (d), in some embodiments, the ends of multiple reinforcing ribs that are close to each other can be spaced apart, and the extension lines of the multiple reinforcing ribs can intersect at a preset reference point (e.g., Figure 11 (As shown by solid point O in (d)). At this point, the reinforcing structure 318 can be simply regarded as a radial reinforcement of the earphone fixing part 311.

[0158] In some embodiments, under equivalent conditions, when the reinforcing rib and the earphone fixing part 311 satisfy the following dimensional relationship, the rigidity of the earphone fixing part 311 can be effectively increased while also taking into account its weight. In some embodiments, the ratio between the thickness of the reinforcing rib and the thickness of the earphone fixing part 311 can be within the closed interval [0.8, 1.2], the ratio between the width of the reinforcing rib and the thickness of the earphone fixing part 311 can be within the closed interval [0.4, 0.6], and the ratio between the spacing of the reinforcing ribs and the thickness of the earphone fixing part 311 can be within the closed interval [1.6, 2.4]. In some embodiments, the thickness of the reinforcing rib and the thickness of the earphone fixing part 311 can be the same, the width of the reinforcing rib can be half the thickness of the earphone fixing part 311, and the spacing of the reinforcing ribs can be twice the thickness of the earphone fixing part 311. Some embodiments of this application are illustrated with an example where the thickness of the earphone fixing part 311 is 0.8 mm, and the thickness, width, and spacing of the reinforcing ribs are 0.8 mm, 0.4 mm, and 1.6 mm, respectively. It should be noted that, Figure 10 (a) or Figure 10 (b) and Figure 11 (a) Figure 11 (b) Figure 11 (c) or Figure 11 The various reinforcing structures shown in (d) can be reasonably combined according to the rigidity requirements of the headphone fixing part 311, and no restrictions are imposed here.

[0159] Figure 12 This is an exploded structural diagram of an exemplary movement module according to some embodiments of this application.

[0160] like Figure 12 As shown, in some embodiments, the mechanism module 20 may further include a cover plate 24. One end of the mechanism housing 21 is open, and the cover plate 24 can be disposed on the open end of the mechanism housing 21 to form a cavity structure for accommodating the mechanism 22. In other words, the cover plate 24 is disposed on the other end of the annular peripheral wall 212 away from the bottom wall 211 and is disposed opposite to the bottom wall 211. In some embodiments, the cover plate 24 and the mechanism housing 21 can be connected by adhesive bonding or a combination of snap-fit ​​and adhesive bonding. In some embodiments, the ear hook housing 31 is connected to the cover plate 24. For example, the earphone fixing part 311 can cover the side of the cover plate 24 away from the mechanism housing 21 in a fully covered or partially covered manner. Some embodiments of this application are illustrated by example where the earphone fixing part 311 fully covers the cover plate 24. In this case, the ear hook housing 31 and the mechanism housing 21 can still be connected by adhesive bonding or a combination of snap-fit ​​and adhesive bonding.

[0161] It should be noted that, Figure 12The ear hook housing 31 is shown in the diagram, mainly to facilitate the description of the relative positional relationship between the ear hook housing 31 and the cover plate 24, and thus implicitly to show a possible assembly method between the ear hook housing 31 and the cover plate 24.

[0162] In some embodiments, the elastic modulus of the mechanism housing 21 can be greater than that of the ear hook housing 31, and the elastic modulus of the cover plate 24 can be greater than that of the ear hook housing 31. In this case, if the cover plate 24 is used instead of the earphone fixing part 311 to connect with the mechanism housing 21, it helps to increase the stiffness of the structure at the open end of the mechanism housing 21 (specifically, the cover plate 24 and the earphone fixing part 311), thereby helping to reduce the difference between the stiffness of the bottom wall 211 of the mechanism housing 21 and the stiffness of the structure at its open end. This arrangement ensures that the mechanism housing 21 has sufficient stiffness to keep its resonant frequency in the highest possible high-frequency range, also helps to increase the resonant frequency of the structure (mechanical housing 21, cover plate 24, and earphone fixing part 311), and helps to improve the aforementioned sound leakage phenomenon.

[0163] In some embodiments, the elastic modulus of the cover plate 24 may be less than or equal to the elastic modulus of the movement housing 21. For example, the elastic modulus of the cover plate 24 may be equal to the elastic modulus of the movement housing 21. In this case, the cover plate 24 and the movement housing 21 can form a structure similar to B+B after being connected. This arrangement ensures that the ratio of the difference between the stiffness K1 of the bottom wall 211 and the stiffness K3 of the cover plate 24 to the stiffness K1 of the bottom wall 211 is less than or equal to a preset proportional threshold. For example, the preset proportional threshold may be 10%, that is, (K1-K3) / K1≤10%, or K3 / K1≥90%.

[0164] In some embodiments, the area of ​​the bottom wall 211 can be less than or equal to the area of ​​the cover plate 24, and the thickness of the bottom wall 211 can be less than or equal to the thickness of the cover plate 24. Based on the above description, while ensuring a certain level of wearing comfort, reducing the area of ​​the bottom wall 211 can increase the resonant frequency of the movement housing 21. Therefore, in order to ensure that the movement housing 21 has sufficient rigidity so that its resonant frequency is located in the highest possible high-frequency region, the area of ​​the bottom wall 211 can be less than or equal to the area of ​​the cover plate 24, that is, the area of ​​the opening end of the movement housing 21 is greater than the area of ​​the bottom wall 211. In some embodiments, according to the above relationship K∝(E·t) / S, when the elastic modulus of the cover plate 24 is less than or equal to the elastic modulus of the movement housing 21, and the area of ​​the bottom wall 211 is less than or equal to the area of ​​the cover plate 24, in order to satisfy the above relationship (K1-K3) / K1≤10%, the thickness of the bottom wall 211 needs to be less than or equal to the thickness of the cover plate 24.

[0165] In some embodiments, the material of the cover plate 24 can be the same as that of the movement housing 21; for example, the material of the cover plate 24 can be a mixture of polycarbonate and glass fiber and / or carbon fiber. In some embodiments, according to the above-described relationship K∝(E·t) / S, in order to satisfy the above-described relationship K3 / K1≥90%, the ratio of the thickness to area of ​​the cover plate 24 to the ratio of the thickness to area of ​​the bottom wall 211 needs to be greater than or equal to 90%. For example, the ratio of the thickness to area of ​​the bottom wall 211 is equal to the ratio of the thickness to area of ​​the cover plate 24.

[0166] It should be understood that, according to the above relationship K∝(E·t) / S, in order to satisfy the above relationship (K1-K3) / K1≤10%, the structural parameters (e.g., thickness, area, and proportions) of the cover plate 24 and the movement housing 21 can be designed based on their materials, or the materials of the cover plate 24 and the movement housing 21 can be selected based on their structural parameters. Therefore, the above embodiments are only examples to provide two possible design schemes.

[0167] Based on the above detailed description, after the cover plate 24 replaces the headphone fixing part 311 and is connected to the core housing 21, the headphone fixing part 311 still needs to be connected to the side of the cover plate 24 away from the core housing 21, for example, the headphone fixing part 311 fully covers the cover plate 24.

[0168] In some embodiments, if both the ear hook housing 31 and the cover plate 24 are made of plastic, and the elastic modulus of the former is less than that of the latter, they can be formed into an integral structural component by two-color injection molding. If the ear hook housing 31 is made of plastic and the cover plate 24 is made of metal, and the elastic modulus of the former is less than that of the latter, they can be formed into an integral structural component by metal insert injection molding. In this case, the ear hook housing 31 and the cover plate 24 will be connected to the mechanism housing 21 as a whole. This arrangement can well ensure the consistency of vibration between the ear hook housing 31 and the cover plate 24; however, it will also be difficult to install the buttons mentioned above, the second microphone mentioned later, etc., between the ear hook housing 31 and the cover plate 24.

[0169] In some embodiments, the earphone fixing part 311 and the cover plate 24 can be connected by adhesive bonding or a combination of snap-fit ​​and adhesive bonding. In this case, the ear hook housing 31 and the cover plate 24 are also provided with the buttons mentioned above and the second microphone mentioned later; the specific structure will be described in detail later. Considering that when the adhesive between the earphone fixing part 311 and the cover plate 24 has a small filling degree, not only is the connection strength between the earphone fixing part 311 and the cover plate 24 difficult to guarantee, but their vibration may also have a large hysteresis problem, and air may be trapped between them, causing adverse effects on the resonant frequency of the structure. That is, the beneficial effect of improving the (A+B) structure to a (B+B) structure mentioned above is difficult to guarantee, and the structure may also produce noise during vibration. Therefore, in some embodiments, the adhesive (…) between the earphone fixing part 311 and the cover plate 24… Figure 12 (Not shown in the image) The fill factor between the two should be as large as possible, for example, the fill factor should be greater than or equal to 90%.

[0170] In addition, in some embodiments, under equivalent conditions Figure 13 As shown, the different types of adhesives (such as structural adhesive, hot melt adhesive, instant adhesive, silicone, etc.) used between the earphone fixing part 311 and the cover plate 24 have a significant impact on the resonant frequency of the structure. Among them, the... Figure 13 It can be concluded that different types of colloids do indeed affect the resonant frequency of a structure. If the beneficial effects of the aforementioned colloids on the resonant frequency are ranked from best to worst, the order is: structural adhesive > hot melt adhesive > instant adhesive > silicone. It should be noted that because silicone is generally soft, its beneficial effect on the resonant frequency of the structure is the weakest. Therefore, if the resonant frequency of the structure is considered, a harder colloid can be used, for example, between the earphone fixing part 311 and the cover plate 24.

[0171] Figure 14 This is a top view schematic diagram of the overall structure of the device shown in some embodiments of this application.

[0172] like Figure 14 As shown, in some embodiments, the device 10 may include two speaker assemblies 70, two ear hook assemblies 30, a rear hook assembly 40 connected between the two ear hook assemblies 30, a control circuit assembly 60, and a battery assembly 50.

[0173] In some embodiments, the two speaker assemblies 70 are respectively connected to two ear hook assemblies 30, and the ear hook assemblies 30 are connected between the rear hook assembly 40 and the speaker assembly 70. In some embodiments, the ear hook assembly 30 may form a receiving space 300, one of which is used to receive the battery assembly 50, and the other is used to receive the control circuit assembly 60. The battery assembly 50 is used to power the device 10, and the control circuit assembly 60 is used to control the operation of the device 10 and perform corresponding operations.

[0174] In some embodiments, the speaker assembly 70 may include a first speaker housing, a second speaker housing, and a speaker. The first and second speaker housings are connected to form a receiving space for accommodating the speaker.

[0175] In some embodiments, the device 10 may further include a microphone assembly 80 for picking up sound. The microphone assembly 80 may be connected to a speaker assembly 70. There may be one microphone assembly 80, which connects to one of two speaker assemblies 70; for example, the microphone assembly 80 may be connected to the speaker assembly 70 corresponding to the battery assembly 50. Of course, in other embodiments, each speaker assembly 70 may be connected to one microphone assembly 80.

[0176] To facilitate adjustment of the microphone assembly 80's pickup position, the microphone assembly 80 can be configured to rotate relative to the first speaker housing. In some embodiments, the speaker assembly 70 may include a rotating member, and the first speaker housing may have a first through hole. The rotating member is rotatably inserted into the first through hole, allowing the microphone assembly 80 to rotate relative to the first speaker housing.

[0177] In some embodiments, the first speaker housing may have a second through hole spaced apart from the first through hole. The second through hole is used for the ear hook assembly 30 to be inserted and engaged, thereby connecting the speaker assembly 70 and the ear hook assembly 30. Both the first and second through holes communicate with the receiving space 700.

[0178] Figure 15 This is an exploded view of the structure of the rear-mounted component according to some embodiments of this application.

[0179] like Figure 15 As shown, in some embodiments, the rear-mounted assembly 40 may include an elastic metal wire 41, an elastic covering 43 wrapped around the elastic metal wire 41, and insertion portions 44 disposed at both ends of the elastic metal wire 41. In some embodiments, the elastic covering 43 may also cover at least a portion of the insertion portions 44.

[0180] In some embodiments, the insertion portion 44 is used to engage with the ear hook assembly 30. In some embodiments, at least one insertion portion 44 has two sets of slots 441 spaced apart along its length. That is, at least one insertion portion 44 has two sets of slots 441 spaced apart along its length, and each set of slots 441 includes at least one slot 441. An elastic metal wire 41 is inserted into the insertion portion 44 through one end. One set of slots 441 is adjacent to the insertion portion 133, and the other set of slots 441 is away from one end of the insertion portion 44.

[0181] In some embodiments, the insertion portion 44 has the aforementioned two sets of slots 441 sequentially formed from one end of the insertion portion 44 to the other end. The slot 441 near the insertion portion 44 is used for mold positioning. The slot 441 away from the insertion portion 44 is used for snap-fit ​​engagement with the ear hook housing.

[0182] In some embodiments, the two sets of slots 441 are divided into a first set of slots 441 and a second set of slots 441. The first set of slots 441 is located away from the insertion part 44 and is used to engage with the ear hook assembly 30.

[0183] In some embodiments, the second slot 441 is located near one end of the insertion portion 44 and is used for mold positioning. That is, the second set of slots 441 is used to cooperate with corresponding protrusions on the mold, thereby precisely fixing the insertion portion 44 in a certain position, enabling other processes to be performed and improving the yield rate. For example, the second set of slots 441 is used to position the insertion portion 44 and the elastic metal wire 41, thereby forming an elastic covering body 43 by injection molding. In some embodiments, the slots 441 extend from the edges of the insertion portion 44 located on both sides of its central axis toward the central axis. In some embodiments, each set of slots 441 includes two slots 441, and the two slots 441 in each set are arranged opposite to each other.

[0184] Figure 16 This is a structural schematic diagram of an ear hook assembly according to some embodiments of this application. Figure 17 This is a structural schematic diagram of an ear hook assembly according to some embodiments of this application.

[0185] like Figure 16 and Figure 17 As shown, in some embodiments, the ear hook assembly 30 may include a first ear hook housing 33, a connecting member 34, and a second ear hook housing 35. One end of the connecting member 34 may be connected to the first ear hook housing 33, and the other end of the connecting member 34 may be connected to the speaker assembly 70. For example, the other end of the connecting member 34 may be inserted into a second through-hole in the first speaker housing to engage with the speaker assembly 70.

[0186] In some embodiments, the first ear hook housing 33 and the second ear hook housing 35 may be connected to form a receiving space 300 for accommodating the battery assembly 50 or the control circuit assembly 60. In some embodiments, the receiving space 300 of one of the ear hook assemblies 30 is used to accommodate the battery assembly 50, such as... Figure 16 The ear hook assembly 30 is shown. Another ear hook assembly 30 has a receiving space 300 for accommodating the control circuit assembly 60, such as... Figure 17 The ear hook assembly 30 is shown. In some embodiments, the accommodating space 300 may include a first sub-accommodating space 310 and a second sub-accommodating space 320. Specifically, an ear hook housing 33 has a first sub-accommodating space 310, and a second ear hook housing 35 has a second sub-accommodating space 320. After the first ear hook housing 33 and the second ear hook housing 35 are joined together, the first sub-accommodating space 310 and the second sub-accommodating space 320 combine to form the accommodating space 300.

[0187] In some embodiments, the splicing edge of the first ear hook housing 33 is further provided with a first stop portion 3103, and the splicing edge of the second ear hook housing 35 is provided with a second stop portion 3104. The first stop portion 3103 and the second stop portion 3104 fit together to restrict the relative movement of the first ear hook housing 33 and the second ear hook housing 35 in the length direction.

[0188] like Figure 16 As shown, in some embodiments, the battery assembly 50 may include a battery assembly housing (not labeled) and battery cells (not shown) disposed within the battery assembly housing, the battery cells being used to store electrical energy. In some embodiments, the first NFC module 502 may be attached to the battery assembly 50, for example, attached to the battery assembly housing, which can reduce the size of the device 10 and also reduce electromagnetic interference or signal interference between the first NFC module 502 and the control circuit assembly 60.

[0189] like Figure 17 As shown, in some embodiments, the control circuit assembly 60 may include a circuit board 601, a power interface 602, a button 603, an antenna 604, etc. In some embodiments, a Bluetooth module for implementing Bluetooth communication functions may be integrated into the control circuit assembly 60. In some embodiments, the control circuit assembly 60 may also integrate other circuits and components. For example, the Bluetooth module may be integrated on the circuit board 601. The sensor assembly 605 may also be integrated on the circuit board 601.

[0190] like Figure 17As shown, taking the sensor assembly 605 including an optical sensor as an example, the first ear hook housing 33 can form a window 330 for transmitting light signals from the optical sensor. The window 330 can be disposed adjacent to the connecting member 34 so that when the device 10 is worn, the window 330 is close to the user's earlobe. In some embodiments, the window 330 is arranged in a racetrack shape. In some embodiments, the extension of the central axis of the connecting member 34 intersects the long axis of the window 330, such as... Figure 17 The diagram schematically illustrates the approximate intersection relationship. By setting the extension of the central axis of the connecting component 34 to intersect the major axis of the window 330, the window 330 can be effectively positioned close to the user's ear base, thereby ensuring the sensitivity and detection effectiveness of the sensor assembly 605.

[0191] Taking bone conduction headphones as an example, the aforementioned device 10 is designed for lightweight and miniaturized headphones. Since the development trend of bone conduction headphones is towards portability and smaller size, the ear hook assembly 30, which houses the battery assembly 50 or control circuit assembly 60 and related wiring, is often the largest part of the bone conduction headphone. The design of the related fasteners and latches in the ear hook assembly 30 affects the overall size of the ear hook assembly 30. To reduce the size of the ear hook assembly 30, some embodiments of this application provide the following housing structure for the ear hook assembly 30.

[0192] In some embodiments, the accommodating space 300 may have mutually perpendicular length and thickness directions. In some embodiments of this application, unless otherwise specified, the length direction refers to the length direction of the accommodating space 300, and the thickness direction refers to the thickness direction of the accommodating space 300.

[0193] Figure 18 This is a schematic diagram of the structure of the first ear hook housing and the second ear hook housing according to some embodiments of this application. Figure 19 This is a schematic diagram of the structure of the first ear hook housing and the second ear hook housing according to some embodiments of this application.

[0194] like Figure 18 and Figure 19 As shown, in some embodiments, the accommodating space 300 may have mutually perpendicular length and thickness directions. The length direction refers to the length of the accommodating space 300, and the thickness direction refers to the thickness of the accommodating space 300.

[0195] In some embodiments, the first ear hook housing 33 and the second ear hook housing 35 are spliced ​​together along a splicing direction perpendicular to the length and thickness directions to form an accommodating space 300. In some embodiments, the first ear hook housing 33 has a first sub-accommodating space 310, and the second ear hook housing 35 has a second sub-accommodating space 320. After the first ear hook housing 33 and the second ear hook housing 35 are spliced ​​together, the first sub-accommodating space 310 and the second sub-accommodating space 320 combine to form the accommodating space 300.

[0196] In some embodiments, the first ear hook housing 33 may be formed with a first slot 3101 and a second slot 3102 with the same opening direction at intervals along the length direction. That is, the openings of the first slot 3101 and the second slot 3102 face the same direction.

[0197] In some embodiments, the second ear hook housing 35 is provided with a first locking block 351 and a second locking block 352 extending in the same direction along its length. That is, the first locking block 351 and the second locking block 352 are spaced apart in the length direction, and their protrusion directions are the same, so that they face the same direction, allowing the first locking block 351 and the second locking block 352 to be respectively inserted into the first locking slot 3101 and the second locking slot 3102 in the same direction.

[0198] In some embodiments, the first card block 351 can be embedded in the first card slot 3101, and the second card block 352 can be embedded in the second card slot 3102 to limit the relative movement of the first ear hook housing 33 and the second ear hook housing 35 in the splicing direction and thickness direction.

[0199] In some embodiments, the splicing edge 301 of the first ear hook housing 33 and the splicing edge 302 of the second ear hook housing 35 can fit together to restrict relative movement of the first ear hook housing 33 and the second ear hook housing 35 in the longitudinal direction. In some embodiments, splicing of the first ear hook housing 33 and the second ear hook housing 35 can mean that the splicing edge 301 of the first ear hook housing 33 and the splicing edge 302 of the second ear hook housing 35 are substantially in contact and connected. The splicing edge 301 of the first ear hook housing 33 can refer to the edge of the first ear hook housing 33 facing the second ear hook housing 35, used for splicing with the second ear hook housing 35, such as... Figure 18 The splicing edge 301 is shown. In some embodiments, the splicing edge 302 of the second ear hook housing 35 may refer to the edge of the second ear hook housing 35 facing the first ear hook housing 33, for splicing with the first ear hook housing 33, such as... Figure 19 The splicing edge 302 is shown.

[0200] In some embodiments, the shapes of the splicing edge 301 of the first ear hook housing 33 and the splicing edge 302 of the second ear hook housing 35 are adapted to each other, and the two can fit together or complement each other to form a stable mating structure, which can restrict the relative movement of the two in the length direction.

[0201] With the first card block 351 and the second card block 352 extending in opposite directions, the first card block 351 and the second card block 352 protrude in opposite directions, which will inevitably lead to an increase in the extra space occupied by the first card block 351 and the second card block 352. In order to enable the first card block 351 and the second card block 352 to be inserted, the first card slot 3101 and the second card slot 3102 also need to increase the distance in the length direction so as to cover the first card block 351 and the second card block 352. In some embodiments, by providing a first slot 3101 and a second slot 3102 with the same opening direction, and a first block 351 and a second block 352 with the same extension direction, the mating directions of the first block 351 and the second block 352 with the first slot 3101 and the second slot 3102 are the same. Since the extension directions of the first block 351 and the second block 352 are the same, the additional volume occupied by the first block 351 and the second block 352 can be reduced, thereby reducing the volume occupied by the first block 351 and the second block 352 mating with the first slot 3101 and the second slot 3102. This effectively reduces the volume of the ear hook assembly 30. Furthermore, by utilizing the interlocking edges 301 of the first ear hook housing 33 and the interlocking edges 302 of the second ear hook housing 35, it is unnecessary to provide additional buckles, protrusions, or other structures. This makes the ear hook assembly 30 more compact and also reduces its volume. Meanwhile, the cooperation between the first locking block 351 and the second locking block 352 and the first locking slot 3101 and the second locking slot 3102 can limit the displacement in the splicing direction and the thickness direction. The fit of the splicing edges 301 and 1202 can limit the displacement in the length direction. This makes the splicing of the first ear hook housing 33 and the second ear hook housing 35 more stable and the structure more reliable.

[0202] like Figure 18 As shown, in some embodiments, the first slot 3101 and the second slot 3102 can be located on opposite sides of the first ear hook housing 33 along its length. The opening of the first slot 3101 faces the receiving space 300, and the opening of the second slot 3102 faces away from the receiving space 300. That is, the opening of the first slot 3101 faces the first sub-receiving space 1210, and the opening of the second slot 3102 faces away from the first sub-receiving space 1210. Optionally, the first slot 3101 is located on the side of the first ear hook housing 33 near the connecting member 34, and the second slot 3102 is located on the side of the first ear hook housing 33 away from the connecting member 34.

[0203] like Figure 19 As shown, in some embodiments, the first locking block 351 and the second locking block 352 can be located on opposite sides of the second ear hook housing 35 along its length. The extension direction of the first locking block 351 is away from the receiving space 300, while the extension direction of the second locking block 352 is towards the receiving space 300. That is, the extension direction of the first locking block 351 is away from the second sub-receiving space 320, while the extension direction of the second locking block 352 is towards the second sub-receiving space 320. Accordingly, the first locking block 351 is disposed on the side of the second ear hook housing 35 near the connecting member 34, and the second locking block 352 is disposed on the side of the second ear hook housing 35 away from the connecting member 34. Since the second locking block 352 protrudes into the receiving space 300, it does not need to occupy additional space compared to protruding outward from the receiving space 300, thus saving corresponding space. When engaged, the second locking slot 3102 is located in front of the extension direction of the second locking block 352, and the two are embedded together, which can also reduce the volume of the ear hook assembly 30.

[0204] In some embodiments, the splicing edge 301 of the first ear hook housing 33 is provided with a first stop 3103, and the splicing edge 302 of the second ear hook housing 35 is provided with a second stop 3104. The first stop 3103 and the second stop 3104 fit together to restrict the relative movement of the first ear hook housing 33 and the second ear hook housing 35 in the length direction. For example, the first stop 3103 is an opening formed by the splicing edge 301 of the first ear hook housing 33, and the second stop 3104 is a protrusion formed by the splicing edge 302 of the second ear hook housing 35. The shapes of the opening and the protrusion are adapted to each other and can fit together, so that the splicing edge 301 of the first ear hook housing 33 and the splicing edge 302 of the second ear hook housing 35 can complement each other to restrict the relative movement of the two in the length direction.

[0205] The opening of the first slot 3101 faces the receiving space 300. If the first slot 3101 is formed directly within the first sub-receiving space 310, the draft direction of forming the first sub-receiving space 310 and the draft direction of forming the first slot 3101 may interfere with each other during the process of forming the first sub-receiving space 310 and the first slot 3101 using the corresponding mold. Since the draft direction of the first slot 3101 is within the first sub-receiving space 310, it may also conflict with the draft directions of other structures, causing significant difficulties in production. Based on the above technical challenges, this embodiment designs the following structure to reduce production and manufacturing difficulties.

[0206] like Figure 18As shown, in some embodiments, the connecting member 34 may include an ear hook elastic wire 341 and a connector 342 connected to one end of the ear hook elastic wire 341. To protect the ear hook elastic wire 341, the connecting member 34 may also include an ear hook elastic covering 343 covering at least the outer periphery of the ear hook elastic wire 341. Alternatively, the ear hook elastic wire 341 may further cover the first ear hook housing 33. The connector 342 is used for insertion and engagement with the speaker assembly 70. The other end of the ear hook elastic wire 341 is connected to the first ear hook housing 33.

[0207] In some embodiments, the ear hook elastic wire 341 can be made of spring steel, titanium, other metals, or non-metallic materials. In some embodiments, the ear hook elastic cover 343 can be made of silicone, rubber, plastic, or other materials. In some embodiments, the ear hook elastic cover 343 covers the ear hook elastic wire 341 and may further cover the first ear hook housing 33 and the second ear hook housing 35, thus covering the second wire-holding portion. Of course, this allows for the power socket and other components to be exposed. In some embodiments, the ear hook elastic cover 343 may also cover at least a portion of the connector portion 342, thus covering the first wire-holding portion.

[0208] In some embodiments, the first ear hook housing 33 has a connector hole 3105 communicating with the accommodating space 300 on the side away from the connecting member 34. The connector hole 3105 and the second slot 3102 are arranged adjacent to each other, and the insertion part 44 can be inserted and cooperated with the connector hole 3105.

[0209] In some embodiments, the first ear hook housing 33 is provided with a protruding snap-fit ​​portion. For example, the first ear hook housing 33 is provided with a protruding snap-fit ​​portion in the insertion hole 3105. The insertion portion 44 is inserted into the insertion hole 3105 and the snap-fit ​​portion is embedded in the first set of slots 441, thereby restricting the relative movement of the ear hook assembly 30 and the rear hook assembly 40.

[0210] Figure 20 This is a cross-sectional structural schematic diagram of the ear hook housing according to some embodiments of this application.

[0211] like Figure 20As shown, in some embodiments, the first ear hook housing 33 may have an outer hole segment 335 and an inner hole segment 336 that communicate with each other in the direction from outside the accommodating space 300 to inside the accommodating space 300. That is, the opening direction of the outer hole segment 335 is away from the accommodating space 300, and the opening direction of the inner hole segment 336 is towards the accommodating space 300, and the outer hole segment 335 and the inner hole segment 336 are connected. A filler 337 is filled in the outer hole segment 335. In some embodiments, the filler 337 may be a rubber part or hard plastic, etc. After the outer hole segment 335 is filled and sealed, the inner hole segment 336 can serve as the first slot 3101, and the opening direction of the inner hole segment 336 is towards the accommodating space 300, which can cooperate with the first slot 351.

[0212] In the actual manufacturing process, an outer hole segment 335 and an inner hole segment 336 can be formed sequentially from the outside to the inside of the first ear hook housing 33. The draft direction is not within the first sub-accommodating space 1210, but outside the first ear hook housing 33. Then, the outer hole segment 335 is filled with a filler 337, so that the remaining inner hole segment 336 can serve as the first slot 3101. This effectively reduces the manufacturing difficulty and complexity, and saves costs.

[0213] In some embodiments, the cross-sectional area of ​​the outer hole segment 335 perpendicular to the communication direction of the outer hole segment 335 and the inner hole segment 336 is greater than the cross-sectional area of ​​the inner hole segment 336 perpendicular to the communication direction of the outer hole segment 335 and the inner hole segment 336. Because the corresponding cross-sectional area of ​​the outer hole segment 335 is greater than that of the inner hole segment 336, it is easier to fill the outer hole segment 335 with a filler 337, thereby achieving a better sealing effect and forming the first slot 3101 more quickly.

[0214] Based on the above structural description of the outer hole segment 335 and the inner hole segment 336 of the ear hook assembly 30, the manufacturing method of the ear hook assembly 30 can be described exemplarily as follows:

[0215] Step 210: The first ear hook housing 33 and the second ear hook housing 35 are formed by injection molding, and an outer hole segment 335 and an inner hole segment 336 that communicate with each other are formed in the first ear hook housing 33 from the outside to the inside of the first ear hook housing 33. The first locking block 351 is formed on the second ear hook housing 35.

[0216] Step 220: Fill the outer hole section 335 with filler 337 and use the inner hole section 336 as the first slot 3101.

[0217] Optionally, filler 337 is filled into the outer hole section 335 by injection molding.

[0218] In some embodiments, in order to protect the first ear hook housing 33, the first ear hook housing 33 may be covered with an ear hook elastic covering 343 after step 220, as follows:

[0219] Step 230: The ear loop elastic coating 343 is wrapped around the first ear loop housing 33 by injection molding, and the outer hole section 335 is covered.

[0220] Step 240: The first ear hook housing 33 and the second ear hook housing 35 are spliced ​​together by the snap-fit ​​of the first slot 3101 and the first block 351.

[0221] The molding methods and steps for the other structures of the ear hook assembly 30 can be manufactured using existing molding methods based on the specific structure of the ear hook assembly 30, and will not be elaborated here.

[0222] To further reduce the size of the ear hook assembly 30, the positions of the components within the accommodating space 300 can be replaced or rearranged, thereby effectively compressing the accommodating space 300 and reducing the size of the ear hook housing. If the power socket 353 of the device 10 is located on the side of the second ear hook housing 35 away from the bottom wall of the first ear hook housing 33, the size of the ear hook assembly 30 will increase. To effectively reduce the size of the ear hook assembly 30, in this embodiment, the power socket 353 is located on the side wall of the second ear hook housing 35 away from the connecting member 34, as detailed below:

[0223] like Figures 18 to 20 As shown, in some embodiments, the portion of the second ear hook housing 35 away from the connecting member 34 has a power socket 353, which communicates with the accommodating space 300 and is used to accommodate the power interface 602. In some embodiments, the second ear hook housing 35 may also have a housing bottom and a housing side, with the housing side surrounding the housing bottom to form a second sub-accommodating space 320. The edge of the housing side away from the housing bottom serves as a splicing edge 302 for splicing with the first ear hook housing 33. In some embodiments, the power socket 353 is located on the housing side, communicating with the second sub-accommodating space 320, i.e., communicating with the accommodating space 300.

[0224] like Figure 20 As shown, in some embodiments, the second latch 352 may be disposed adjacent to the power socket 353. That is, the second latch 352 protrudes from the portion of the second ear hook housing 35 away from the connecting member 34 and faces into the receiving space 300. In some embodiments, the second latch 352 is closer to the receiving space 300 than the power socket 353; in other words, the second latch 352 is closer to the connecting member 34 than the power socket 353.

[0225] In some embodiments, the projections of the second card block 352 and the power socket 353 onto a first reference plane perpendicular to the length direction overlap each other. In some embodiments, this overlap includes partial overlap (i.e., the overlapping portion is part of both the projection of the second card block 352 and the projection of the power socket 353) and complete overlap (i.e., the projection of the second card block 352 completely falls within the projection of the power socket 353). In some embodiments, a plane perpendicular to the length direction is used as the first reference plane, and the projection of the second card block 352 on the first reference plane lies within the projection of the power socket 353 on the first reference plane, meaning their projection ranges completely overlap. This arrangement of the positions of the second card block 352 and the power socket 353 allows for a compact structure of the second ear hook housing 35 without affecting the installation of the power interface 152, thus reducing the volume of the ear hook assembly 30.

[0226] In some embodiments, the projections of the second card block 352 and the power socket 353 onto a second reference plane perpendicular to the splicing direction overlap each other. This overlap includes both partial and complete overlap. In some embodiments, the plane perpendicular to the splicing direction is used as the second reference plane, and the projection of the second card block 352 onto the second reference plane also lies within the projection of the power socket 353 onto the second reference plane, meaning that their projection ranges completely overlap. This allows the second card block 352 and the power socket 353 to be structurally compact in both the splicing direction and the length direction, maximizing the saving of space occupied by the power socket 353 and the second card block 352, thereby improving the structural compactness of the ear hook assembly 30.

[0227] Furthermore, in industrial and manufacturing applications, the user experience of the device 10 is of paramount importance. Positioning the power socket 353 within the portion of the second ear hook housing 35 furthest from the connecting component 34 can improve the user experience of the device 10 for the following reasons:

[0228] Device 10 (e.g., bone conduction headphones) typically has volume buttons, etc. According to conventional methods, the button holes 355 and power sockets 353 corresponding to buttons 153 are usually located at the bottom of the second ear hook housing 35, that is, the portion of the second ear hook housing 35 that is away from the first ear hook housing 33. Because the area at the bottom of the housing is relatively limited, the button holes 355 and power sockets 353 are quite compact, taking up as little space as possible. In industrial and manufacturing fields, wearers may wear work clothes or gloves, and if the button holes 1235 are small and arranged too compactly, it will reduce the user's operating experience and easily lead to misoperation. However, some embodiments of this application do not have the power socket 353 on the bottom of the housing, but rather on the side of the housing. Therefore, the size of the button holes 355 can be designed to be larger, and their arrangement can be more spacious, making it easier for the user to operate and reducing the occurrence of misoperation.

[0229] Furthermore, based on the design of the power socket 353, if the second locking block 352 is positioned on the second ear hook 30 housing 123 near the power socket 353 and facing the top of the first ear hook housing 33 (e.g.) Figure 19 The platform area connecting the second card block 352 (that is, the second card block 352 can be regarded as extending from the platform area into the second sub-accommodating space 320) will squeeze the space of the insertion hole 3105 of the first ear hook housing 33, which will affect the insertion and engagement between the ear hook assembly 30 and the rear hanging assembly 40. The second card block 352 needs to occupy additional space, which will make the splicing of the first ear hook housing 33 and the second ear hook housing 35 in the splicing direction occupy a large space and not compact enough. Therefore, in this embodiment, by setting the power socket 353 at the bottom of the housing of the second ear hook housing 35 and setting the structural relationship between the second card block 352 and the power socket 353 according to the above projection relationship, the structure of the second ear hook housing 35 in the splicing direction is more compact. The second card block 352 extends into the accommodating space 300 and does not need to occupy additional space, thereby miniaturizing the size of the ear hook housing 12.

[0230] Based on the above detailed description, the stable splicing structure between the first ear hook housing 33 and the second ear hook housing 35 can protect the battery assembly 50 and the control circuit assembly 60 within the accommodating space 300. Of course, to reduce the failure rate of the bone conduction headphones 1, it is necessary to ensure not only the stability of the structure but also the stability of the electrical connections. The wiring to the wire assembly within the bone conduction headphones 1 runs between the speaker assembly 70 and the ear hook assembly 30; the stability of this wiring is related to the reliability of the bone conduction assembly. To improve the reliability of the wiring, the ear hook assembly 30 can be equipped with a corresponding wire-locking structure to ensure the stability of the wires when the wire assembly passes through the ear hook assembly 30, as detailed below.

[0231] Figure 21 This is a schematic diagram of the structure of the first ear hook housing and the second ear hook housing according to some embodiments of this application. Figure 22 This is a structural schematic diagram of an ear hook assembly according to some embodiments of this application.

[0232] like Figure 21 and Figure 22 As shown, in some embodiments, the connector 342 has a first wire-locking portion 344, and the first ear hook housing 33 has a second wire-locking portion 338. The lead wire group led out from the speaker assembly 70 can enter the receiving space 300 in sequence through the first wire-locking portion 344 and the second wire-locking portion 338. The first wire-locking portion 344 and the second wire-locking portion 338 are used to lock the lead wire group in the radial direction, thereby reducing the wobbling of the lead wire group in the radial direction.

[0233] In some embodiments, the lead wire assembly secured by the first wire-locking portion 344 and the second wire-locking portion 338 may be an auxiliary titanium wire or other additional component used in the preparation of the ear hook assembly 30. Specifically, during the preparation of the ear hook assembly 30, an auxiliary titanium wire is needed to form a lead wire channel within the ear hook elastic coating 343. Therefore, during the preparation process, the auxiliary titanium wire is sequentially threaded through the first wire-locking portion 344, the second wire-locking portion 338, and into the receiving space 300. After preparation is completed, the auxiliary titanium wire is pulled out to form a lead wire channel connecting the receiving space 110 and the receiving space 300. The first wire-locking portion 344 and the second wire-locking portion 338 can maintain the stability of the auxiliary titanium wire and reduce its wobbling, thereby making the adhesive position more stable.

[0234] In some embodiments, the lead wire channel may be arranged in parallel with the ear loop elastic metal wire 341 within the ear loop elastic cover 343.

[0235] In some embodiments, the lead wire group secured by the first wire-locking portion 344 and the second wire-locking portion 338 can be a wire group for electrical connection that is passed through after the lead wire channel is formed. That is, the wire group led out from the speaker assembly 70 enters the receiving space 300 through the first wire-locking portion 344 and the second wire-locking portion 338. Specifically, the wobbling of the wire group needs to be reduced before and after entering the lead wire channel, which can improve the wire leading efficiency. In addition, since the ear hook assembly 30 is used to hang on the human ear, it is generally arranged in an arc shape. The wire group passing through the ear hook assembly 30 is prone to wobbling or movement. The first wire-locking portion 344 and the second wire-locking portion 338 can reduce the wobbling of the wire group.

[0236] In some embodiments, the ear hook elastic cover 343 forms a lead wire channel (not shown). The wires leading out from the speaker assembly 70 can sequentially enter the receiving space 300 through the first wire clamping part 344, the lead wire channel, and the second wire clamping part 338.

[0237] Some embodiments of this application provide a first wire-clamping part 344 and a second wire-clamping part 338 on the connector part 342 and the first ear hook housing 33, respectively. On the one hand, this can prevent the movement of the auxiliary titanium wire relative to the first ear hook housing 33 and the connector part 342 during the manufacturing process, resulting in a more uniform adhesive application on the ear hook assembly 30 and improving the yield rate. On the other hand, it can prevent the radial movement of the wire assembly, thereby reducing the shaking of the wire assembly, making the wire assembly threading efficiency higher, and also making the structure of the wire assembly in the actual product more stable, thus ensuring the stability of the electrical connection.

[0238] In some embodiments, the first locking wire portion 344 may have two first sub-locking wire portions 3441 arranged at intervals in the thickness direction. For example... Figure 22 As shown, the two first sub-clip portions 3441 are staggered relative to each other in the length direction of the lead group. The two first sub-clip portions 3441 can stop the lead group in the thickness direction when it passes between them, thereby restricting the movement of the lead group in the thickness direction. Optionally, the two first sub-clip portions 3441 have different extension lengths in the length direction of the lead group.

[0239] In some embodiments, the second wire-locking portion 338 may have two second sub-wire-locking portions 3381 arranged at intervals in the thickness direction, with the two second sub-wire-locking portions 3381 disposed opposite to each other. The two second sub-wire-locking portions 3381 can lock the lead group in the thickness direction when the lead group passes between the two second sub-wire-locking portions 3381, thereby restricting its movement in the thickness direction.

[0240] In some embodiments, the first wire-clamping portion 344 may be recessed in the connector portion 342, and the second wire-clamping portion 338 may be recessed in the first ear-hook housing 33. This allows the wire assembly to be seen in the first wire-clamping portion 344 and the second wire-clamping portion 338, thereby reducing the distance the wire assembly is threaded through the invisible area, facilitating the threading of the wire assembly, and improving the wire-leading efficiency.

[0241] To facilitate the insertion of the connector 342 into the second through hole of the first speaker housing and to enhance the connection stability between the two, in some embodiments, such as Figure 22As shown, the end portion 3421 of the connector portion 342 can be formed with two intersecting through grooves 345 to divide the end portion 3421 into four sub-end portions. By providing two intersecting through grooves 345 to divide the end portion 3421 into four sub-end portions, the elasticity of the end portion 3421 can be enhanced, allowing the four sub-end portions to be compressed and elastically recover. Thus, when the connector portion 342 is inserted into the second through hole, the four sub-end portions are compressed and move closer together, making the end portion 3421 smaller and facilitating the insertion of the connector portion 342 into the second through hole.

[0242] In some embodiments, the outer periphery of the sub-end may be provided with a protrusion 346. The connector 342 is inserted into the speaker assembly 70, and the protrusion 346 is locked and limited by the speaker assembly 70 to restrict the movement of the connector 342 away from the speaker assembly 70. Specifically, after the connector 342 is inserted into the second through hole 1111, the four sub-ends elastically return to their original position, thereby allowing the protrusion 346 on the outer periphery of the sub-end to be locked and limited by the speaker assembly 70, which can improve the connection reliability between the ear hook assembly 30 and the speaker assembly 70.

[0243] Specifically, the connector 342 is inserted into the second through hole, and the protrusion 346 can be located in the receiving space 110. The protrusion 346 is locked at the edge of the connection between the second through hole and the receiving space 110.

[0244] Figure 23 This is a partial structural diagram of the assembled headphones according to some embodiments of this application. Figure 24 This is a schematic diagram of the internal structure of the ear hook housing and the rear hook assembly after disassembly, according to some embodiments of this application.

[0245] like Figure 23 and Figure 24 As shown, in some embodiments, the ear hook housing 31 is provided with an installation port 304, through which the rear hook assembly 40 is partially inserted into the ear hook housing 31 (specifically, the portion corresponding to the receiving compartment 313 and the compartment cover 314). The rear hook assembly 40 and the ear hook housing 31 at the installation port 304 can be a clearance fit or a transition fit, and an adjustment space is provided within the ear hook housing 31 to allow the rear hook assembly 40 to adjust its insertion depth relative to the ear hook housing 31 under the user's insertion and extraction force, thereby adjusting the effective length of the rear hook assembly 40 so that the device 10 can adapt to different user head sizes.

[0246] In some embodiments, a positioning mechanism 100 is provided between the ear hook housing 31 and the back hook assembly 40. The positioning mechanism 100 is used to keep the back hook assembly 40 and the ear hook housing 31 relatively fixed after the user releases the insertion and extraction force. The positioning mechanism 100 can be a screw, pin, clip, etc., which allows the back hook assembly 40 to abut against the ear hook housing 31. This arrangement ensures that after the user adjusts the insertion depth of the back hook assembly 40 relative to the ear hook housing 31 to a certain usage state, the positioning mechanism 100 maintains this usage state, thereby meeting the user's needs. The specific structure of the positioning mechanism 100 will be described in detail below.

[0247] like Figure 23 and Figure 24 As shown, in some embodiments, the rear-mounted assembly 40 may include a flexible metal wire 41, a connector 45, a conductor 42, and a cover 43. Wherein, as... Figure 24 As shown, the elastic metal wire 41 is curved along its length, allowing the back-hook assembly 40 to be wrapped around the back of the user's head. Here, the elastic metal wire 41 primarily supports the back-hook assembly 40 to maintain its basic structural shape. When the user wears the device 10, the back-hook assembly 40 can cooperate with the two movement modules 20 and the two ear hook assemblies 30 to provide clamping force, increasing the stability and reliability of the fit. Therefore, the material of the elastic metal wire 41 can be, but is not limited to, spring steel, titanium alloy, titanium-nickel alloy, chromium-molybdenum steel, etc.

[0248] like Figure 24 As shown, in some embodiments, the insertion post 45 is disposed at the end of the elastic metal wire 41 and is partially inserted into the ear hook housing 31 via the mounting port 304. A positioning mechanism 100 is disposed between the ear hook housing 31 and the insertion portion of the insertion post 45 relative to the ear hook housing 31. This arrangement ensures that after the user adjusts the insertion depth of the insertion post 45 of the back hook assembly 40 relative to the ear hook housing 31 to a certain usage state, the relative positional relationship between the insertion post 45 and the ear hook housing 31 can be maintained by the positioning mechanism 100, thereby adjusting the effective length of the back hook assembly 40 so that the device 10 can adapt to different user head sizes. Compared to the back hook assembly 40 directly inserting and removing from the ear hook housing 31, this application uses the insertion post 45 to insert and remove from the ear hook housing 31, and uses the insertion post 42 to provide a corresponding positioning mechanism 100, which increases the structural flexibility of the positioning mechanism 100. Furthermore, the insertion post 45 can be made of metal to increase its wear resistance.

[0249] Because the rear-mount assembly 40 (especially the flexible metal wire 41) can be curved, the connector 45 can also be curved along its length to match the curvature of the flexible metal wire 41, thus allowing the curvature of the rear-mount assembly 40 to change uniformly along its length. In this case, the bending radius of the connector 45 can gradually increase from the end closest to the flexible metal wire 41 to the end furthest from it, within a range of 50-150 mm. Of course, because the connector 45 is relatively small in its length direction, that is, very short compared to the length of the flexible metal wire 41, the connector 45 can also be straight.

[0250] like Figure 23 and Figure 24 As shown, in some embodiments, the cover 43 wraps around the elastic metal wire 41, the connector 45, and the conductor 42 to protect them from external interference, thereby increasing the service life of the back hook assembly 40. In some embodiments, the material of the cover 43 may include, but is not limited to, polycarbonate, polyamide, silicone, rubber, etc., with a relatively soft texture to increase the wearing comfort of the back hook assembly 40. In some embodiments, at the connector 45 portion, the cover 43 may partially wrap around the connector 45, so that the end of the connector 45 away from the elastic metal wire 41 is exposed outside the cover 43, so that the connector 45 can be partially inserted into the ear hook housing 31.

[0251] In some embodiments, the connector 45 can be tubular, that is, the cross-section of the connector 45 perpendicular to its length is annular. This allows the elastic wire 41 to be inserted and fixed within the connector 45, and also allows the conductor 42 to extend through the connector 45 into the ear hook housing 31. In this case, a soft rubber sleeve can also be fitted over the portion of the conductor 42 corresponding to the connector 45. Figure 23 and Figure 24 (Not shown in the image) to avoid wear caused by friction between the conductor 42 and the connector 45. In some embodiments, the connector 45 may also be semi-tubular, that is, the cross-section of the connector 45 perpendicular to its length direction is semi-annular. In this case, it is equivalent to providing a lead groove 451 on the connector 45, and the conductor 42 may also be embedded in the lead groove 451. In some embodiments, when the connector 45 is tubular and used to accommodate the conductor 42, the ends of the elastic wire 41 and the connector 45 that are close to each other can also be fixedly connected by other fasteners. In addition, for the conductor 42, the portion corresponding to the elastic wire 41 can be kept relatively fixed to the elastic wire 41 under the wrapping action of the cover 43; the portion corresponding to the connector 45 can be in the colloid ( Figure 23 and Figure 24Under the adhesive bonding effect (not shown in the image), the conductor 42 remains relatively fixed to the connector 45, thereby preventing the conductor 42 from shaking in the rear-mount assembly 40. Especially when the conductor 42 is embedded in the lead groove 451 of the connector 45, the adhesive between the conductor 42 and the connector 45 can prevent the conductor 42 from separating from the connector 45 under the action of insertion and extraction forces, thereby increasing the reliability of the rear-mount assembly 40.

[0252] In some embodiments, such as Figure 23 and Figure 24 As shown, a stop mechanism 200 can also be provided between the ear hook housing 31 and the connector post 45, which cooperate with each other. The stop mechanism 200 is used to limit the maximum and / or minimum insertion depth of the connector post 45 relative to the ear hook housing 31, to prevent over-insertion or over-extraction during the insertion and removal adjustment of the rear hook assembly 40. For the ear hook housing 31, the stop mechanism 200 may include a first stop portion 201 and a second stop portion 202 fixed within the ear hook housing 31, which are spaced apart relative to each other in the direction in which the rear hook assembly 40 is inserted or removed relative to the ear hook housing 31. For the connector post 45, the stop mechanism 200 may be a stop block 452 fixed to the end of the connector post 45, located between the first stop portion 201 and the second stop portion 202. During the insertion of the connector 45 into the ear hook housing 31, the stop block 452 is stopped by the first stop portion 201; during the removal of the connector 45 from the ear hook housing 31, the stop block 452 is stopped by the second stop portion 202, thereby preventing over-insertion or over-extraction. In some embodiments, the ear hook housing 31 is further provided with a guide groove 203 between the first stop portion 201 and the second stop portion 202, allowing the stop block 452 and part of the connector 45 to slide under the guidance of the guide groove 203, thereby increasing the reliability and stability of the insertion and removal adjustment.

[0253] In some embodiments, in order to make the device 10 adaptable to as many types of user head sizes as possible, the maximum insertion depth of the plug post 45 relative to the ear hook housing 31 can be 20 mm and the minimum can be 5 mm.

[0254] The following is a detailed example of the positioning mechanism:

[0255] Figure 25 This is a schematic diagram illustrating the principle structure of one embodiment of the positioning mechanism according to some embodiments of this application. Figure 25 Arrow A in the diagram indicates the direction in which the rear-mounted component is inserted or removed relative to the ear hook housing.

[0256] In some embodiments, such as Figure 25As shown, the positioning mechanism 100 may include a positioning recess 101 disposed on one of the insertion portions of the ear hook housing 31 and the connector post 45, and a positioning protrusion 102 disposed on the other of the insertion portions of the ear hook housing 31 and the connector post 45. The number of the positioning recess 101 and the positioning protrusion 102 is at least two spaced apart along the insertion direction of the rear hook assembly 40 relative to the ear hook housing 31, so that they can sequentially engage with the other of the positioning recess 101 and the positioning protrusion 102 as the insertion depth of the connector post 45 relative to the ear hook housing 31 changes. In some embodiments, the positioning protrusion 102 is configured to disengage from the positioning recess 101 after the user's insertion / extraction force exceeds a preset threshold, thereby adjusting the insertion depth. The positioning protrusion 102 may be made of metal to increase its wear resistance.

[0257] like Figure 25 As shown, in some embodiments, positioning recesses 101 can be provided on the insertion post 45, and the number of such recesses can be three. In some embodiments, positioning protrusions 102 can also be provided on the ear hook housing 31, and the number of such protrusions can be two. In this case, in the insertion direction of the rear hanging assembly 40 relative to the ear hook housing 31, the distance between two adjacent positioning recesses 101 can be equal to each other, and the distance between two positioning protrusions 102 can be equal to the distance between two adjacent positioning recesses 101. This arrangement allows the positioning recesses 101 and positioning protrusions 102 to engage with each other during the adjustment of the rear hanging assembly 40 relative to the ear hook housing 31, thereby maintaining the usage state of the rear hanging assembly 40 after adjustment. Since there are three positioning recesses 101, there are three options for maintaining the relative position of the rear hanging assembly 40 relative to the ear hook housing 31 after insertion to different depths, that is, the user has three different choices when adjusting the effective length of the rear hanging assembly 40 relative to the ear hook housing 31.

[0258] In some embodiments, the number of positioning recesses 101 and the number of positioning protrusions 102 can be arbitrary. Furthermore, when the number of one of the positioning recesses 101 and positioning protrusions 102 is fixed, a larger number of the other means a greater number of engagements between them. In this case, the positioning mechanism 100 provides a more reliable positioning effect on the rear hook assembly 40 and the ear hook housing 31, but the user requires a greater insertion and extraction force. Conversely, a smaller number of the other means a smaller number of engagements between them. In this case, the positioning mechanism 100 may be less reliable in positioning the rear hook assembly 40 and the ear hook housing 31, but the user requires a smaller insertion and extraction force. Therefore, the specific number and spacing of the positioning recesses 101 and positioning protrusions 102 can be reasonably designed according to actual adjustment requirements.

[0259] Figure 26This is a schematic diagram illustrating the principle and structure of an implementation of a positioning mechanism according to some embodiments of this application. Figure 27 This is a schematic diagram illustrating the principle and structure of an implementation of a positioning mechanism according to some embodiments of this application. Figure 28 This is a schematic diagram illustrating the principle and structure of a positioning mechanism according to some embodiments of this application. It should be noted that: Figures 26 to 28 Arrow A in the diagram indicates the direction in which the rear-mounted component is inserted or removed relative to the ear hook housing, while arrow B indicates the direction of deformation of the elastic element under the action of insertion and removal force.

[0260] In some embodiments, the positioning mechanism 100 may further include an elastic element 103, which is used to elastically press the positioning protrusion 102 into the positioning recess 101. This arrangement allows the positioning protrusion 102 to be pushed into the positioning recess 101 under the elastic force of the elastic element 103 during insertion and removal, and also allows the positioning protrusion 102 to force the elastic element 103 to elastically deform and disengage from the positioning recess 101. Compared to Figure 6 The rigid fit shown Figures 7 to 9 The flexible fit shown can reduce wear on the positioning mechanism 100 and increase the ease of adjustment. In addition, since both the positioning recess 101 and the positioning protrusion 102 can be made of metal, when the elastic member 103 pushes the positioning protrusion 102 into the positioning recess 101, the positioning protrusion 102 can collide with the positioning recess 101 and make a "bang" metallic impact sound, thereby reminding the user that the positioning mechanism 100 has moved into place.

[0261] In some embodiments, such as Figure 26 As shown, the elastic element 103 can be an elastic cantilever. One end of the elastic cantilever 103 is connected to the ear hook housing 31, a positioning protrusion 102 is provided on the elastic cantilever 103, and a positioning recess 101 is provided on the insertion post 45. At this time, as... Figure 26 As shown, the number of elastic cantilever 103 can be the same as the number of positioning protrusions 102. With this configuration, during the insertion and removal process, the elastic element 103 can undergo elastic deformation or elastic recovery, thereby applying an elastic force to the positioning protrusion 102 and achieving a flexible fit between the positioning protrusion 102 and the positioning recess 101.

[0262] In some embodiments, such as Figure 27 As shown, the elastic element 103 can be an elastic bridge. Both ends of the elastic bridge 103 are connected to the ear-hook housing 31, a positioning protrusion 102 is provided on the elastic bridge 103, and a positioning recess 101 is provided on the insertion post 45. At this time, as... Figure 27As shown, the number of elastic bridges 103 may not be the same as the number of positioning protrusions 102. With this arrangement, during the insertion and removal process, the elastic element 103 can undergo elastic deformation or elastic recovery, thereby applying an elastic force to the positioning protrusions 102 and achieving a flexible fit between the positioning protrusions 102 and the positioning recesses 101.

[0263] In some embodiments, such as Figure 28 As shown, the elastic element 103 can be a spring. The ear hook housing 31 has a mounting base 104, which forms a receiving cavity for accommodating the spring 103 and the positioning protrusion 102. Furthermore, the spring 103 elastically supports the positioning protrusion 102, so that the positioning protrusion 102 is partially exposed from the receiving cavity, and the positioning recess 101 is provided on the insertion post 45. With this configuration, during insertion and removal, the elastic element 103 can undergo elastic deformation or elastic recovery, thereby applying an elastic force to the positioning protrusion 102, achieving a flexible fit between the positioning protrusion 102 and the positioning recess 101.

[0264] In some embodiments, the positioning protrusion 102 may be spherical, such as a steel ball. In some embodiments, the ratio between the embedment depth of the positioning protrusion 102 relative to the positioning recess 101 and the radius of the positioning protrusion 102 is 1 / 3 to 2 / 3. For example, if the diameter of the steel ball is 1.0 mm, the embedment depth may be 0.25 mm.

[0265] In some embodiments, the mounting base 104 and the ear hook housing 31 can be integrally formed structural components. In this case, a pin 105 can also be provided at the end of the elastic element 103 away from the positioning protrusion 102. The pin 105 can be fixedly connected to the mounting base 104 by any one or a combination of assembly methods such as snap-fit, adhesive bonding, and threaded connection.

[0266] For example only, such as Figure 28 As shown, if there are three positioning recesses 101 and one positioning protrusion 102 and its corresponding elastic element 103, then the effective length of the rear-mounted assembly 40 has three adjustable positions. Furthermore, if the basic length of the rear-mounted assembly 40 is 200mm and the distance between any two positioning recesses 101 is 10mm, then the effective length of the rear-mounted assembly 40 can also be adjusted to 180mm or 160mm.

[0267] In some embodiments, parameters such as the diameter of the positioning protrusion 102, the elastic force of the elastic element 103, and the depth to which the positioning protrusion 102 sinks into the positioning recess all affect the preset threshold of the insertion and extraction force applied by the user. Obviously, if the preset threshold is too small, the positioning mechanism 100 may be unreliable; if the preset threshold is too large, the insertion and extraction force applied by the user will be very large and difficult to adjust. Furthermore, under the action of the elastic element 103, the positioning protrusion 102 will always be elastically pressed against the insertion post 45. Therefore, when designing the preset threshold, the main considerations are the pushing force F1 required for the insertion post 45 to push the positioning protrusion 102 away from the corresponding positioning recess 101 and the sliding friction force F2 of the insertion post 45 after the positioning protrusion 102 separates from the positioning recess 101.

[0268] For the thrust F1, its relationship with the elastic force F exerted by the elastic element 103 on the positioning protrusion 102 is as follows: F1=F*sinθ / cosθ. Where θ is the angle between the tangent of the contact surface between the positioning protrusion 102 and the positioning recess 101 and the thrust F1. In some embodiments, 180g≤F1≤240g. For example, F1=200g, that is, the preset threshold can be designed to be 200g.

[0269] The sliding friction force F2 and the elastic force F exerted by the elastic element 103 on the positioning protrusion 102 satisfy the following relationship: F2 = (μ1 + μ2) * F. Where μ1 is the coefficient of friction between the positioning protrusion 102 and the insertion post 45, and μ2 is the coefficient of friction between the insertion post 45 and the ear hook housing 31. Clearly, the smaller the value of the sliding friction force F2, the less sliding resistance the insertion post 45 experiences after separating from the positioning protrusion 102 and the positioning recess 101, making user adjustment easier.

[0270] Figure 29 This is a schematic diagram illustrating the principle structure of a guide mechanism on the ear hook housing according to some embodiments of this application.

[0271] Based on the detailed description above, in some embodiments, after the conductor 42 is routed through the rear hook assembly 40, its end is fixedly connected to the control circuit assembly 60 or the battery assembly 50, while the remaining parts are relatively fixed to the elastic metal wire 41, the connector 45, etc. Obviously, during the user's adjustment of the insertion depth of the rear hook assembly 40 relative to the ear hook housing 31, the conductor 42 needs a certain margin in the portion corresponding to the ear hook housing 31 to prevent it from breaking. In other words, the conductor 42 extends a certain length from the end of the connector 45 inserted into the ear hook housing 31. The extended length (or margin) of the conductor 42 can be reasonably designed based on the maximum and / or minimum insertion depth of the connector 45 relative to the ear hook housing 31, and is not limited here.

[0272] In some embodiments, a guide mechanism 3100 is further provided within the ear hook housing 31. The guide mechanism 3100 is used to guide the portion of the guide body 42 extending from the plug 45 during the insertion and removal of the plug 45 relative to the ear hook housing 31, so as to prevent the conductor 42 from accumulating near the mounting port 304.

[0273] In some embodiments, such as Figure 29 As shown, the guide mechanism 3100 may include a first guide mechanism 3101 and a second guide mechanism 3102. The first guide mechanism 3101 is disposed near the mounting port 304 and located on one side of the portion of the conductor 42 extending from the connector post 45. The second guide mechanism 3102 is disposed spaced apart from the first guide mechanism 3101 along the insertion direction of the connector post 45 relative to the ear hook housing 31 and located on the other side of the portion of the conductor 42 extending from the connector post 45. Further, the portion of the conductor 42 extending from the connector post 45 is bent from the side where the second guide mechanism 3102 is located toward the side where the first guide mechanism 3101 is located. In this case, at least the first guide mechanism 3101 is in a bent shape to facilitate guiding the conductor 42.

[0274] The above description is only a part of the embodiments of this application and does not limit the scope of protection of this application. Any equivalent device or equivalent process transformation made based on the content of this application specification and drawings, or directly or indirectly applied to other related technical fields, are similarly included in the patent protection scope of this application.

[0275] Figure 30 This is a schematic diagram of the wiring structure between various electrical devices according to some embodiments of this application.

[0276] In some embodiments, such as Figure 30As shown, electrical components such as the mechanism module 20 and control keys 38 on the control circuit assembly 60 side can be electrically connected to the control circuit assembly 60 via conductors without passing through the connection assembly 40 (i.e., the rear-mounted assembly 40); electrical components such as the mechanism module 20 and keys 36 on the battery assembly 50 side can also be electrically connected to the battery assembly 50 via conductors without passing through the connection assembly 40. However, the electrical connection between the battery assembly 50 and the control circuit assembly 60, and the electrical connection between the mechanism module 20 and keys 36 on the battery assembly 50 side and the control circuit assembly 60, requires passing through the connection assembly 40. In some embodiments, the wiring structure of the connection assembly 40 is often designed with multi-strand wires, making the wiring structure of this part relatively large. In this case, when the multi-strand wires (whose cross-section is generally circular) are combined with the elastic metal wires and other structural components (whose cross-section is also generally circular) in this part, there is often a large space between them, resulting in the size of this part being relatively large. Therefore, in some embodiments of this application, a different approach is taken to separate the multiple wires, run them separately, and make them conform to structural components such as elastic metal wires, so as to reduce the space between the two and make the connecting component 40 more compact in structure.

[0277] Figure 31 This is a schematic cross-sectional view of a connecting component according to some embodiments of this application. Figure 32 This is a top view of the connection assembly shown in some embodiments of this application. Figure 33 This is a schematic diagram of the structure of the substrate according to some embodiments of this application. Figure 34 This is a schematic diagram of the cross-sectional structure of the connecting component according to some embodiments of this application.

[0278] In some embodiments, the connecting component 40 has a curved shape in its overall structure, and its length direction is not a straight line, but rather a curve. Further, as... Figure 31 The direction shown can be perpendicular to the length direction of the connecting component 40, such that... Figure 31 The plane containing the cross-sectional structure shown can represent a reference section perpendicular to the length direction of the connecting component 40 (i.e., its base 46).

[0279] like Figure 31As shown, in some embodiments, the connecting component 40 may include a base 46, a plurality of conformal lines 47, and an enclosure 43. The base 46 is curved along its length, allowing the connecting component 40 to be worn on the user's head or ear. For example, when the connecting component 40 is worn on the user's head, the weight of the device 10 is primarily borne by the top of the user's head; while when the connecting component 40 is worn on the user's ear, the weight of the device 10 is primarily borne by the user's ear. In this case, the base 46 primarily supports the connecting component 40 to maintain its basic structural shape. Therefore, when the user wears the device 10, the connecting component 40 can cooperate with the two mechanism modules 20 and the two ear hook assemblies 30 to provide clamping force, increasing the stability and reliability of the wearing experience. In some embodiments, the cross-sectional shape of the base 46 in a reference section perpendicular to its length direction can be circular, rectangular, trapezoidal, etc. Simultaneously, the plurality of conformal lines 47 can be conformally arranged on the base 46 and spaced apart from each other. In some embodiments, a plurality of conformal lines 47 further extend along the length of the substrate 46 from a first end to a second end, so as to facilitate electrical connection between electrical devices (such as the aforementioned mechanism module 20, button 36, control circuit assembly 60, battery assembly 50, etc.) respectively mounted at the first and second ends of the substrate 46, thereby replacing the multi-strand wires in the related art. In this case, to avoid short circuits in the plurality of conformal lines 47, the insulation resistance between the plurality of conformal lines 47 can be not less than 10 megohms. Furthermore, a cover 43 wraps around the plurality of conformal lines 47 and the substrate 46 to protect the plurality of conformal lines 47 and the substrate 46, thereby increasing the service life of the connection assembly 40. In some embodiments, the material of the cover 43 can be, but is not limited to, polycarbonate, polyamide, silicone, rubber, etc., with a soft texture to increase the wearing comfort of the connection assembly 40.

[0280] In some embodiments, the conformal arrangement is primarily on a reference cross section, and the shapes of the surfaces of the plurality of conformal lines 47 that contact the substrate 46 are substantially consistent with each other. For example, as Figure 31 As shown, the surface of the substrate 46 is planar, and the surfaces of the multiple conformal lines 47 that contact the substrate 46 are also correspondingly planar. For example, as... Figure 33As shown, the surface of the substrate 46 is curved, and the surfaces of the multiple conformal lines 47 that contact the substrate 46 are also correspondingly curved; and the bending direction and radius of curvature of both are generally consistent. This arrangement effectively reduces the space between multi-strand wires (whose cross-section is generally circular) and structural components such as elastic metal wires (whose cross-section is also generally circular) in related technologies, thereby making the connecting assembly 40 more structurally compact. In some embodiments, the multiple conformal lines 47 can be formed on the substrate 46 using conformal circuit fabrication processes, photolithography, electroplating, roller printing, etc. In some embodiments, the material of the multiple conformal lines 47 can include, but is not limited to, gold, silver, copper, nickel, tin, silver, palladium, rhodium, etc., or their alloys. In some embodiments, the multiple conformal lines 47 can also be wires pasted onto the substrate 46, but both must satisfy a conformal structural relationship.

[0281] In some embodiments, the substrate 46 may include an elastic metal wire 461 and an insulating layer 462 surrounding the elastic metal wire 461. In this case, a plurality of conformal lines 47 are conformally disposed on the insulating layer 462. In some embodiments, the material of the elastic metal wire 461 may include, but is not limited to, spring steel, titanium alloy, titanium-nickel alloy, chromium-molybdenum steel, etc., and the material of the insulating layer 462 may include, but is not limited to, vinyl resin paint, acrylic resin paint, polyester resin paint, epoxy resin paint, polyurethane paint, organic element paint, rubber paint, etc., and may also include, but is not limited to, grease paint, natural resin, phenolic resin, asphalt paint, etc. In this case, the insulating layer 462 may be formed on the surface of the substrate 46 by spraying, coating, electrophoresis, vapor deposition, etc. Further, the plurality of conformal lines 47 may be metal layers attached and fixed to the insulating layer 462.

[0282] In some embodiments, the substrate 46 may further include a bonding layer 463 disposed between the elastic metal wire 461 and the insulating layer 462. The bonding layer 463 may include, but is not limited to, neoprene rubber adhesive, nitrile rubber adhesive, polyurethane adhesive, acrylic adhesive, polymethyl methacrylate adhesive, silicone rubber adhesive, etc. This arrangement ensures that the adhesion coefficient of the bonding layer 463 to the elastic metal wire 461 is greater than that of the insulating layer 462 to the elastic metal wire 461, thereby increasing the adhesion between the insulating layer 462 and the substrate 46. In other words, the insulating layer 462 can adhere better to the elastic metal wire 461 through the bonding layer 463, thus improving the overall structural robustness of the connecting assembly 40.

[0283] It should be noted that since the elastic metal wire 461 is not an insulator and has a certain conductivity, it can also be used to achieve electrical connections between electrical devices respectively mounted on the first and second ends of the substrate 46. In this case, the elastic metal wire 461 can not only structurally support the entire connection assembly 40, but also cooperate with multiple conformal lines 47 as part of the wiring structure, making it "two-in-one," thereby simplifying the circuit structure of the connection assembly 40 and saving costs.

[0284] In other embodiments, the substrate 46 can be a rigid plastic component, which can have a certain deformation (i.e., the curvature corresponding to its bent shape can be reduced), structural strength, and a certain electrical insulation, thereby accommodating the wearing of the connecting component 40, the support of the substrate 46 for the connecting component 40, and the electrical insulation requirements of the multiple conformal lines 47. In this case, the multiple conformal lines 47 can be directly conformally disposed on the substrate 46, or a bonding layer 463 can be added between the two. The following is an exemplary description using the example of the substrate 46 having a generally rectangular shape in a reference cross-section:

[0285] Since multiple conformal lines 47 (and flexible metal wires 461) need to achieve electrical connections between multiple electrical devices, the multiple conformal lines 47 can be divided into multiple groups according to specific electrical connection requirements, thereby rationally arranging the wiring structure in the connection assembly 40.

[0286] See again Figure 31In the reference cross-section, the base 46 may have a first surface 464 and a second surface 465 facing away from each other. Both the first surface 464 and the second surface 465 can be planar. In the reference cross-section, the width of the first surface 464 and the second surface 465 is greater than the distance between them. In other words, the shape of the base 46 in the reference cross-section can be rectangular; while the shape of the connecting component 40 in the length direction can be flat, and of course, it also has a curved arc. This configuration can, to a certain extent, restrict the rotational freedom of the connecting component 40, thereby preventing the device 10 from breaking due to improper operation such as stretching or bending of the connecting component 40 during use. The ratio of the width of the first surface 464 and the second surface 465 to the distance between them can be 2:1 to 4:1; for example, the ratio can be 3:1. In one specific embodiment, the length of the base 46 can be 200 mm, the width of the first surface 464 and the second surface 465 (that is, the width of the base 46) can be 2.4 mm, and the distance between the first surface 464 and the second surface 465 (that is, the thickness of the base 46) can be 0.8 mm. Furthermore, the edges of both the first surface 464 and the second surface 465 can be rounded, meaning the edges of the base 46 can be rounded, thus allowing the outer surface of the connecting assembly 40 to also have a rounded transition, reducing unnecessary wear.

[0287] Furthermore, the inner side of the curved shape of one of the first surface 464 and the second surface 465 facing the substrate 46, and the outer side of the curved shape of the other of the first surface 464 and the second surface 465 facing the substrate 46. For example: Figure 32 As shown, the first surface 464 faces the inner side of the curved shape of the base 46, and the second surface 465 faces the outer side of the curved shape of the base 46. That is, when the connecting component 40 is hung on the user's head or ear, the first surface 464 and the corresponding part of the connecting component 40 can contact the user's skin, while the second surface 465 and the corresponding part of the connecting component 40 do not (or rarely) contact the user's skin.

[0288] It should be noted that: on the reference section, if the cross-sectional shape of the base 46 is as follows... Figure 33 As shown in the diagram, the substrate 46 does not have a first surface 464 and a second surface 465 in the strict sense. In this case, multiple conformal lines 47 can be evenly distributed in the circumferential direction of the substrate 46.

[0289] Based on the basic structure of the substrate 46, multiple conformal lines 47 can be divided into two groups. The first group of conformal lines 471 are conformally disposed on the first surface 464, and the second group of conformal lines 472 are conformally disposed on the second surface 465. This arrangement fully utilizes the surface area of ​​the substrate 46, thereby allowing for a more rational arrangement of the wiring structure in the connecting assembly 40. Furthermore, to ensure electrical insulation between the multiple conformal lines 47, the spacing between the conformal lines in the first group 471 is not less than 0.1 mm, and the spacing between the conformal lines in the second group 472 is also not less than 0.1 mm.

[0290] See again Figure 31 The number of conformal lines in the first group of conformal lines 471 can be less than the number of conformal lines in the second group of conformal lines 472; and on the reference cross-section, the cross-sectional area of ​​the conformal lines in the first group of conformal lines 471 can be greater than the cross-sectional area of ​​the conformal lines in the second group of conformal lines 472. For example, on the reference cross-section, each conformal line has a width along its own first surface 464 or second surface 465, and a thickness along a direction perpendicular to the first surface 464 or second surface 465; wherein, the width of the conformal lines in the first group of conformal lines 471 can be greater than the width of the conformal lines in the second group of conformal lines 472. Of course, the thickness of the conformal lines in the first group of conformal lines 471 can also be greater than the thickness of the conformal lines in the second group of conformal lines 472. In this case, when the resistivity of the multiple conformal lines 47 is approximately equal, the conformal lines in the first group of conformal lines 471 can have a smaller resistance value.

[0291] In some embodiments, in order to satisfy the electrical connection between the various electrical components in the device 10 and to minimize impedance, the resistance value of the conformal lines in the first set of conformal lines 471 may not exceed 100 milliohms, and the resistance value of the conformal lines in the second set of conformal lines 472 may not exceed 500 milliohms. Similarly, the number of conformal lines in the second set of conformal lines 472 may be less than the number of conformal lines in the first set of conformal lines 471, and the cross-sectional area of ​​the conformal lines in the second set of conformal lines 472 may be greater than the cross-sectional area of ​​the conformal lines in the first set of conformal lines 471 in a reference cross-section.

[0292] Furthermore, the conformal lines in the first set of conformal lines 471 can be used to realize the electrical connection between the battery assembly 50 mounted on the first end of the base 46 and the control circuit assembly 60 mounted on the second end of the base 46. With this configuration, since the Type-C (USB) interface 39 can be located on the control circuit assembly 60 side, the battery assembly 50 needs to transmit electrical energy through the conformal lines in the connection assembly 40 (specifically, the first set of conformal lines 471) during the charging process. When the resistance value of the conformal lines in the first set of conformal lines 471 is less than the resistance value of the conformal lines in the second set of conformal lines 472, using the first set of conformal lines 471 for power transmission during the charging process can not only reduce power loss but also improve the heat generation problem of the device 10 during the charging process.

[0293] In some implementations, combined Figure 30 and Figure 31 The first set of conformal circuits 471 can contain two conformal circuits, and the second set of conformal circuits 472 can contain three conformal circuits. Specifically, the conformal circuits in the first set of conformal circuits 471 form a current loop between the battery assembly 50 and the control circuit assembly 60; two of the conformal circuits in the second set of conformal circuits 472 cooperate with each other, and the remaining one cooperates with the elastic metal wire 461 to form current loops between the control circuit assembly 60 and the mechanism module 20 (i.e., the mechanism module 20 near the battery assembly 50) mounted on the first end of the base 46, and between the control circuit assembly 60 and the button 36 mounted on the first end of the base 46.

[0294] Furthermore, in the reference cross-section, the width of the first surface 464 and the width of the second surface 465 can be equal. This arrangement allows the width of the conformal lines in the first set of conformal lines 471 to be as large as possible, while ensuring that the conformal lines in the second set of conformal lines 472 can satisfy the signal transmission requirements of the corresponding electrical devices, thereby minimizing the resistance value of the conformal lines in the first set of conformal lines 471. Of course, in the reference cross-section, the width of the first surface 464 and the width of the second surface 465 can be unequal. This arrangement allows material savings and reduced costs of the connecting assembly 40 by decreasing the width of either the first surface 464 or the second surface 465, while ensuring that both the conformal lines in the second set of conformal lines 472 and the first set of conformal lines 471 can satisfy the signal transmission requirements of the corresponding electrical devices.

[0295] In some other embodiments, combined with Figure 30 and Figure 34The first set of conformal circuits 471 can contain two conformal circuits, and the second set of conformal circuits 472 contains four conformal circuits. The conformal circuits in the first set of conformal circuits 471 are used to form a current loop between the battery assembly 50 and the control circuit assembly 60. The conformal circuits in the second set of conformal circuits 472 are further divided into two groups to form current loops between the control circuit assembly 60 and the mechanism module 20 mounted on the first end of the base 46 (i.e., the mechanism module 20 closer to the battery assembly 50), and between the control circuit assembly 60 and the button 36 mounted on the first end of the base 46.

[0296] Figure 35(a) is a schematic diagram of the orthographic projection of the first set of conformal circuits on the substrate according to some embodiments of the present application. Figure 35(b) is a schematic diagram of the orthographic projection of the second set of conformal circuits on the substrate according to some embodiments of the present application.

[0297] As shown in Figures 35(a) and 35(b), due to the width of the conformal lines in the first group of conformal lines 471 (such as...), Figure 9 The dimension shown in W1 can be larger than the width of the conformal lines in the second set of conformal lines 472 (e.g., Figure 10 The dimensions shown in W2 allow for the elimination of pads at both ends of the conformal lines in the first set of conformal lines 471 (e.g., ...). Figure 10 The square ears shown in the diagram simplify the structure of the first set of conformal lines 471. The difference is that, since the width W2 of the conformal lines in the second set of conformal lines 472 is smaller, in order to meet the soldering requirements between the conformal lines in the second set of conformal lines 472 and other electrical components, solder pads are provided at both ends of the conformal lines in the second set of conformal lines 472, as shown in 35(b). This increases the contact area between the conformal lines in the second set of conformal lines 472 and other electrical components during soldering, thereby avoiding defects such as cold solder joints during the soldering process.

[0298] The above description is only a part of the embodiments of this application and does not limit the scope of protection of this application. Any equivalent device or equivalent process transformation made based on the content of this application specification and drawings, or directly or indirectly applied to other related technical fields, are similarly included in the patent protection scope of this application.

[0299] Figure 36 This is a schematic diagram of the structure of the device according to some embodiments of this application.

[0300] like Figure 36As shown, in some embodiments, the device 10 may include two speaker assemblies 70, two ear hook assemblies 30, and a rear-hook assembly 40. Each of the two ear hook assemblies 30 is connected at one end to a speaker assembly 70; that is, each ear hook assembly 30 is connected to a speaker assembly 70. The rear-hook assembly 40 is connected between the other ends of the two ear hook assemblies 30 that are away from their respective speaker assemblies 70. Of course, the device 10 may also include one or more pickup assemblies 90.

[0301] The speaker assembly 70 is used to convert audio into mechanical vibrations of different frequencies. When the device 10 is worn, the speaker assembly 70 can be placed close to the user's head near the ear, thereby transmitting the mechanical vibrations to the user's auditory system through the skull. The ear hook assembly 30 is used to hang on the user's ear. In some embodiments, the two ear hook assemblies 30 may each be provided with a battery assembly 50 and a control circuit assembly 60. The control circuit assembly 60 is used to control the operation of the entire device 10, such as volume control, power on / off, headphone mode selection, wireless connection, or data transmission. The battery assembly 50 is used to power the entire device 10. When the device 10 is worn, the back hook assembly 40 can be wrapped around the back of the user's head. The back hook assembly 40 is connected between the other ends of the two ear hook assemblies 30, with a reliable and stable structure to ensure that the device 10 is worn stably.

[0302] Taking this embodiment, which includes multiple pickup components 90, as an example, the multiple pickup components 90 can be respectively disposed on at least two of the two speaker assemblies 70 and the rear-mounted assembly 40, or the multiple pickup components 90 can be disposed at intervals on the rear-mounted assembly 40. The multiple pickup components 90 are disposed at intervals and independently, so that each can independently perform sound pickup and signal amplification. It should be noted that "multiple" in this embodiment refers to "at least two," such as "two," "three," "four," etc.

[0303] In some embodiments, at least two pickup components 90 are disposed on the rear-mounted component 40, with one pickup component 90 located in the middle of the rear-mounted component 40, and the remaining pickup components 90 spaced apart on one or both sides of the middle position. For example, this embodiment includes three pickup components 90, with two pickup components 90 respectively disposed within the two speaker components 70, and the third pickup component 90 disposed within the rear-mounted component 40. Each of the aforementioned pickup components 90 is independent, capable of independently picking up sound and amplifying the signal, thereby independently processing sounds from different directions. This allows hearing-impaired individuals to adapt to sounds from different directions, improving their auditory experience.

[0304] This embodiment applies bone conduction technology to hearing aid headphones. The speaker assembly 70 needs to have good sound transmission performance. The speaker assembly 70 mainly transmits audio signals through mechanical vibration. Typically, if there is significant air vibration within the speaker assembly 70, it may affect the sound transmission performance of the bone conduction speaker 72, reducing sound quality and consequently impacting the hearing experience of the hearing-impaired person. The speaker assembly 70 in this embodiment can be referred to in the following description of the speaker assembly 70 embodiment of this application. Of course, the speaker assembly 70 described below can also be applied to other types of bone conduction headphones and is not limited to the device 10 described in the above embodiment.

[0305] Figure 37 This is a disassembled structural diagram of a speaker assembly according to some embodiments of this application. Figure 38 This is a cross-sectional structural schematic diagram of a speaker assembly according to some embodiments of this application. Figure 39 This is a cross-sectional structural schematic diagram of a speaker assembly according to some embodiments of this application. Figure 40 This is a disassembled structural diagram of the protective mesh and the annular cover shown in some embodiments of this application. Figure 41 This is a cross-sectional structural schematic diagram of a speaker assembly according to some embodiments of this application.

[0306] like Figures 37 to 41 As shown, in some embodiments, the speaker assembly 70 may include a speaker housing 71, a bone conduction speaker 72, and a protective mesh 73. The bone conduction speaker 72 may be housed within the speaker housing 71. The protective mesh 73 may be supported on the speaker housing 71 and thus used to protect the bone conduction speaker 72.

[0307] like Figure 37 As shown, the speaker housing 71 may be formed with a receiving cavity 710 having an opening 711. The speaker housing 71 has one side with the opening 711 for close proximity to the user's head. The receiving cavity 710 is used to receive the bone conduction speaker 72. The mechanical vibrations generated by the bone conduction speaker 72 can be transmitted to the user's head through the opening 711.

[0308] In some embodiments, the inner wall of the speaker housing 71 may be provided with an annular support 712. The inner wall of the speaker housing 71 refers to the inner wall of the speaker housing 71 that forms the receiving cavity 710. The annular support 712 may be disposed adjacent to the opening 711. The annular support 712 may be used to support the protective mesh 73. In some embodiments, when the protective mesh 73 is supported on the annular support 712, the protective mesh 73 may cover or substantially cover the opening 711, thereby protecting the bone conduction speaker 72.

[0309] like Figure 37As shown, in some embodiments, the bone conduction speaker 72 may include a vibration assembly 721 and a transducer plate 722. Specifically, the vibration assembly 721 may be housed within a receiving cavity 710. The transducer plate 722 is connected to the vibration assembly 721 and exposed through an opening 711. In other words, the transducer plate 722 is exposed outside the receiving cavity 710 through the opening 711, and the bone conduction speaker 72 as a whole forms an effect of protruding from inside the speaker housing 71 and outside the speaker housing 71, with the transducer plate 722 protruding from the opening 711 and thus exposed. When the vibration assembly 721 receives an audio signal, it can convert the audio signal into mechanical vibration. The transducer plate 722, connected to the vibration assembly 721, can transmit the vibration of the bone conduction speaker 72 to the user's auditory nerve via the user's head.

[0310] like Figure 37 As shown, in some embodiments, the protective mesh 73 can be disposed at the open end of the speaker housing 71 and adhere to the vibration surface of the transducer plate 722. As an example, the protective mesh 73 may include an adhering portion 731, a cylindrical receiving portion 732, and an annular support portion 733. The transducer plate 722 can be disposed within the cylindrical receiving portion 732. The adhering portion 731 is used to seal one end of the cylindrical receiving portion 732 and is adhering to the outer end face of the transducer plate 722. In some embodiments, one end of the cylindrical receiving portion 732 may refer to the end of the cylindrical receiving portion 732 away from the receiving cavity 710, and the other end of the cylindrical receiving portion 732 may refer to the end of the cylindrical receiving portion 732 close to the receiving cavity 710. The outer end face of the transducer plate 722 refers to the end face away from the receiving cavity 710 or the end face away from the vibration assembly 721. During the assembly process, the protective mesh 73 can cover the opening 711, and the vibration plate 722 exposed in the opening 711 can be inserted into the cylindrical receiving portion 732, thereby fitting the outer end face of the vibration plate 722 with the fitting portion 731. The annular support portion 733 can be connected to the other end of the cylindrical receiving portion 732 and extends outward from the cylindrical receiving portion 732. The annular support portion 733 is used to support the opening end of the speaker housing 71. Specifically, the annular support portion 733 can be supported on the annular support 712.

[0311] By applying bone conduction technology to hearing aids, the problem of limited improvement in hearing effect for hearing-impaired individuals can be solved by the traditional sound transmission method of traditional hearing aids. Furthermore, by exposing the vibration plate 722 connected to the vibration assembly 721 through the opening 711 and attaching it to the vibration plate 722 with a protective mesh 73, the vibration plate 722 can be placed closer to the user's head. The vibration of the exposed vibration plate 722 can be transmitted to the user's bones more quickly and powerfully. The mechanical vibration of this embodiment is more complete and less prone to frequency loss, which can effectively improve the hearing effect for hearing-impaired individuals. Moreover, due to its mesh structure, the protective mesh 73 allows air inside and outside the accommodating cavity 710 to circulate during the aforementioned mechanical vibration process, thereby balancing the air pressure difference inside and outside the accommodating cavity 710, reducing the sound generated by the vibration of the air inside the accommodating cavity 710, and attenuating the sound generated by the air vibration other than the mechanical vibration of the vibration plate 722, thus reducing sound leakage. Compared to the structure that seals the accommodating cavity 710, the protective mesh 73 can also reduce the impact of air vibration in the accommodating cavity 710 on the vibration of the transmission plate 722, thereby effectively improving the sound quality and sound effect of the device 10.

[0312] like Figure 37 As shown, in order to further ensure that the annular support 733 can be stably supported on the annular base 712, in some embodiments, the speaker assembly 70 may include an annular cover 74 for pressing the annular support 733 onto the annular base 712. This can reduce the possibility that the annular support 733 can be easily torn off, and ensure that the protective mesh 73 can be stably supported on the annular base 712.

[0313] The positional relationship and support structure between the annular top cover 74, the annular support portion 733, and the annular base 712 can be implemented in various ways, as follows.

[0314] In some embodiments, such as Figure 38As shown, the annular support portion 733 can be clamped between the annular upper cover 74 and the annular support platform 712, wherein the outer surface of the annular support portion 733 is close to the annular upper cover 74, and the inner surface of the annular support portion 733 is close to the annular support platform 712. In this embodiment, the inner surface of the protective mesh 73 refers to the surface that is in contact with the outer end face of the vibration transmission plate 722. The inner surface of the annular support portion 733 refers to the portion of the inner surface of the protective mesh 73 within the annular support portion 733. Correspondingly, the outer surface of the protective mesh 73 is disposed opposite to the inner surface of the protective mesh 73. The outer surface of the annular support portion 733 refers to the portion of the outer surface of the protective mesh 73 within the annular support portion 733. Specifically, the annular upper cover 74 directly presses against the outer surface of the annular support portion 733, thereby pressing the inner surface of the annular support portion 733 onto the annular support platform 712. In other words, the annular support 733 extends outward from the inside of the gap between the annular cover 74 and the annular support 712.

[0315] In some embodiments, an adhesive layer may be provided between the inner surface of the annular support portion 733 and the annular base 712, thereby bonding and fixing the annular support portion 733 and the annular base 712. An adhesive layer may also be provided between the outer end face of the vibration plate 722 and the fitting portion 731, thereby bonding and fixing the vibration plate 722 and the fitting portion 731. During actual assembly, the protective mesh 73 can be glued to both the vibration plate 722 and the speaker housing 71 simultaneously, thereby forming the aforementioned adhesive layer, and then the annular top cover 74 is placed on the annular support portion 733. Alternatively, an adhesive layer may also be provided between the outer surface of the annular support portion 733 and the annular top cover 74, thereby bonding and fixing the annular support portion 733 and the annular top cover 74.

[0316] The above embodiments fix the protective mesh 73 in a simple and easy-to-assemble manner, and provide relatively stable support for the protective mesh 73.

[0317] In some embodiments, such as Figure 41 As shown, the inner surface of the annular support portion 733 can cover the annular cover 74, and the annular support portion 733 is further bent and extended between the annular cover 74 and the annular support platform 712, with the outer surface of the annular support portion 733 close to the annular support platform 712. Specifically, the inner surface of the annular support portion 733 covers the annular cover 74, and then extends inward from the outside of the gap between the annular cover 74 and the annular support portion 733.

[0318] In some embodiments, the annular support portion 733 may include an annular sub-portion 7331 and a bent sub-portion 7332. The annular sub-portion 7331 is connected to the cylindrical receiving portion 732 and extends outward from the cylindrical receiving portion 732. The bent sub-portion 7332 is connected to the edge of the annular sub-portion 7331 extending outward from the cylindrical receiving portion 732, that is, the bent sub-portion 7332 is connected to the edge of the annular sub-portion 7331 extending outward from the cylindrical receiving portion 732 and extends away from the edge of the annular sub-portion 7331. Optionally, there may be multiple bent sub-portions 7332, each extending outward from the edge of the annular sub-portion 7331, and the bent sub-portions 7332 may be spaced apart at the edge of the annular sub-portion 7331. Optionally, the bent sub-portions 7332 may also be in a continuous annular shape, extending outward from the edge of the annular sub-portion 7331.

[0319] In some embodiments, the annular sub-part 7331 may cover the annular top cover 74, and the bent sub-part 7332 extends from the annular sub-part 7331 between the annular top cover 74 and the annular support 712. The inner surface of the annular support 733 is close to the annular top cover 74. Specifically, the inner surfaces of the annular sub-part 7331 and the bent sub-part 7332 are close to the annular top cover 74. The outer surface of the annular support 733 is close to the annular support 712. Specifically, the outer surface of the bent sub-part 7332 is close to the annular support 712.

[0320] In some embodiments, an adhesive layer may be provided between the outer surface of the annular support portion 733 and the annular base 712, thereby bonding and fixing the annular support portion 733 and the annular base 712. An adhesive layer may also be provided between the outer end face of the vibration plate 722 and the fitting portion 731, thereby bonding and fixing the vibration plate 722 and the fitting portion 731. In the actual assembly process, the protective mesh 73 can first cover the annular top cover 74, and then be bonded to the vibration plate 722 and the speaker housing 71 simultaneously with adhesive, thereby forming the aforementioned adhesive layer. Of course, an adhesive layer may also be provided between the inner surface of the annular support portion 733 and the annular top cover 74, thereby bonding and fixing the annular support portion 733 and the annular top cover 74.

[0321] By fixing the protective mesh 73 through the above embodiment, compared with other embodiments, the inner surface of the annular support 733 can be wrapped to avoid the groove formed between the protective mesh 73 and the inner side of the annular cover 74 (the side facing the accommodating cavity 710). Thus, while effectively supporting the annular support 733, dust can be prevented from accumulating on the groove and causing blockage of the protective mesh 73, thereby reducing the failure rate of the device 10.

[0322] In some embodiments, Figure 39 and Figure 40As shown, the annular cover 74 may include a first cover 741 and a second cover 742 stacked together. The first cover 741 is closer to the annular support 712 than the second cover 742, and the second cover 742 is supported on the annular support 712. An annular support portion 733 is sandwiched between the first cover 741 and the second cover 742. Specifically, the inner surface of the annular support portion 733 is close to the first cover 741, and the outer surface of the annular support portion 733 is close to the second cover 742.

[0323] Figure 42 This is a disassembled structural diagram of a mesh assembly according to some embodiments of this application. Figure 43 This is a cross-sectional structural schematic diagram of the mesh assembly in a bonding state according to some embodiments of this application. Figure 44 This is a schematic diagram illustrating the fabrication process of a mesh assembly according to some embodiments of this application. Figure 45 This is a schematic diagram illustrating the fabrication process of a mesh assembly according to some embodiments of this application.

[0324] In some embodiments, the protective mesh 73 and the annular cover 74 can be formed as a single unit using a die-cutting technique. The material of the annular cover 74 is a hard plastic, such as plastic, with a hardness greater than that of the protective mesh 73. For example, the protective mesh 73 is formed first, then placed into the mold corresponding to the annular cover 74, and then the annular cover 74 is formed, thereby allowing the first cover 741 and the second cover 742 to clamp the annular support portion 733. Of course, the connection between the protective mesh 73 and the annular cover 74 can also be achieved by: an adhesive layer (applying glue, which solidifies to form an adhesive layer) can be provided between the inner surface of the annular support portion 733 and the first cover 741, thereby bonding and fixing the annular support portion 733 and the first cover 741. An adhesive layer is also provided between the outer surface of the annular support portion 733 and the second cover 742, thereby bonding and fixing the annular support portion 733 and the second cover 742.

[0325] In some embodiments, after the protective mesh 73 and the annular cover 74 are formed as a whole, an adhesive layer can be provided between the first cover 741 and the annular support 712 to bond and fix the first cover 741 and the annular support 712. An adhesive layer can also be provided between the outer end face of the vibration transmission plate 722 and the bonding portion 731 to bond and fix the vibration transmission plate 722 and the bonding portion 731.

[0326] The above embodiments are similar, that is, the inner surface of the annular support portion 733 covers the second cover 742, and the annular support portion 733 is further bent and extended between the first cover 741 and the second cover 742.

[0327] By setting an annular cover 74 including a first cover 741 and a second cover 742, the first cover 741 and the second cover 742 can be prefabricated as a whole with the protective mesh 73, which is convenient for later assembly with the speaker housing 71. The clamping of the first cover 741 and the second cover 742 can make the protective mesh 73 more stable.

[0328] In some embodiments, if the opening 711 is sealed, for example by using silicone to cover the entire speaker housing 71, the air inside the accommodating cavity 710 will also vibrate and generate sound. Specifically, this will cause the speaker assembly 70 to have a large natural frequency resonance peak in the range of 20-20000Hz when it is working, resulting in severe sound leakage and potentially generating wind noise, thus reducing the sound-speaking effect of the bone conduction speaker 72.

[0329] This embodiment utilizes a protective mesh 73 with a mesh structure to allow air circulation inside and outside the accommodating cavity 710, rather than blocking the opening 711. This effectively reduces resonance peaks and thus reduces sound leakage. The protective mesh 73 of this application has multiple mesh openings, which can be distributed in parts of the protective mesh 73 or distributed throughout the entire protective mesh 73. Specifically, it includes an adhesive portion 731, a cylindrical accommodating portion 732, and an annular support portion 733. However, due to the dense and fine mesh structure, therefore... Figures 37-43 The mesh size is not specifically shown in the image.

[0330] Furthermore, in some embodiments, the mesh count of the protective mesh 73 can be 250-600 meshes, and the thickness of the protective mesh 73 can be 0.01mm-0.3mm, which can more effectively reduce sound leakage and ensure the strength of the protective mesh 73. In some embodiments, the mesh count of the protective mesh 73 can be 300-500 meshes. In some embodiments, the mesh count of the protective mesh 73 can be 380-480 meshes. In some embodiments, the mesh count of the protective mesh 73 can be 400-430 meshes. In some embodiments, the thickness of the protective mesh 73 can be 0.05mm-0.25mm. In some embodiments, the thickness of the protective mesh 73 can be 0.1mm-0.2mm. In some embodiments, the thickness of the protective mesh 73 can be 0.125mm-0.15mm.

[0331] In some embodiments, the material of the protective mesh 73 may be at least one of PC (polycarbonate), PET (polyethylene terephthalate), and nylon.

[0332] The protective mesh 73 shown in some embodiments of this application can be thermoformed, thereby enabling the protective mesh 73 to form a structure including an adhesive portion 731, a cylindrical receiving portion 732, and an annular support portion 733. Specifically, the following embodiments can be used to improve the yield rate and structural stability of the protective mesh 73.

[0333] The mesh component embodiment of this application can be applied to the speaker component embodiment of this application described above, such as... Figure 42 As shown, this embodiment may include a protective mesh 73 and an auxiliary lining 75 that are attached to each other.

[0334] like Figures 42 to 44 As shown, in some embodiments, the protective mesh 73 and the auxiliary lining 75 can be thermoformed, such that the thermoformed protective mesh 73 includes a bonding portion 731, a cylindrical receiving portion 732, and an annular support portion 733. The bonding portion 731 is used to seal one end of the cylindrical receiving portion 732, and the annular support portion 733 is connected to the other end of the cylindrical receiving portion 732 and extends outward from the cylindrical receiving portion 732. The auxiliary lining 75 has a higher hardness than the protective mesh 73 and is conformally configured with the protective mesh 73, thereby supporting the protective mesh 73 to maintain its thermoformed shape. The auxiliary lining 75 can be made of plastic.

[0335] Because the hardness of the auxiliary lining material 75 is greater than that of the protective mesh 73, when the protective mesh 73 and the auxiliary lining material 75 are hot-pressed together, the auxiliary lining material 75 and the protective mesh 73 deform together to the corresponding shape. At this time, the two are conformally set, and the auxiliary lining material 75 can support the protective mesh 73 to maintain the corresponding shape. During assembly, the protective mesh 73 is assembled to the speaker housing 71.

[0336] The protective mesh 73 is formed using the above-described scheme of this embodiment. The specific preparation methods can be as follows:

[0337] like Figure 44 As shown, the first preparation method includes the following steps:

[0338] Step 410: Prepare the original mesh 73A and the original lining 75B, and attach them together.

[0339] Step 420: The original mesh 73A and the original lining material 75B that are attached to each other are stamped to obtain a protective mesh 73 and an auxiliary lining material 75 of a predetermined size.

[0340] Step 430: After the protective mesh 73 and the auxiliary lining 75 are bonded together, they are hot-pressed and formed. The auxiliary lining 75 and the protective mesh 73 are conformal so that the auxiliary lining 75 can support the protective mesh 73 to maintain its shape after hot pressing. The hot-pressed protective mesh 73 includes a bonding part 731, a cylindrical receiving part 732 and an annular support part 733. The bonding part 731 is used to seal one end of the cylindrical receiving part 732, and the annular support part 733 is connected to the other end of the cylindrical receiving part 732 and extends to the outside of the cylindrical receiving part 732.

[0341] Step 440: Peel off the auxiliary lining material 75 to obtain the protective mesh 73.

[0342] like Figure 45 As shown, the second preparation method includes the following steps:

[0343] Step 510: Prepare the original mesh 73A and the original lining material 75B;

[0344] Step 520: The original mesh 73A and the original lining material 75B that are attached to each other are hot-pressed and formed. The hot-pressed original mesh 73A and the original lining material 75B are conformal so that the original lining material 75B can support the original mesh 73A to maintain the shape after hot pressing.

[0345] Step 530: The original mesh 73A and the original lining material 75B, which have been hot-pressed, are stamped to obtain a conformally configured protective mesh 73 and auxiliary lining material 75. The protective mesh 73 includes a bonding part 731, a cylindrical receiving part 732 and an annular support part 733. The bonding part 731 is used to seal one end of the cylindrical receiving part 732, and the annular support part 733 is connected to the other end of the cylindrical receiving part 732 and extends to the outside of the cylindrical receiving part 732.

[0346] Step 540: Peel off the auxiliary lining material 75 to obtain the protective mesh 73.

[0347] In this embodiment, the auxiliary lining material 75 is used to assist the protective mesh 73 in hot pressing. Since the hardness of the auxiliary lining material 75 is greater than that of the protective mesh 73, after hot pressing, the auxiliary lining material 75 can support the protective mesh 73 to maintain its shape after hot pressing. This results in a protective mesh 73 with stable shape and structure, improving the yield and structural stability of the protective mesh 73. This facilitates subsequent assembly into the corresponding speaker housing 71. Moreover, since the protective mesh 73 can effectively maintain its shape after hot pressing, it can adapt to the structure and shape of the bone conduction speaker 72 and effectively fit the outer end face of the vibration plate 722. The stable mesh structure of the protective mesh 73 allows air to circulate inside and outside the accommodating cavity 710, thereby reducing the sound generated by the vibration of the air inside the accommodating cavity 710. It also attenuates the sound generated by air vibration other than the mechanical vibration of the vibration plate 722, thus reducing sound leakage. Compared with a structure that seals the accommodating cavity 710, the protective mesh 73 reduces sound leakage of the speaker assembly 70. That is, the mesh assembly of this embodiment can improve the structural stability of the protective mesh 73, which helps to improve the hearing aid effect of the device 10.

[0348] Figure 46 This is a disassembled structural diagram of a vibration assembly according to some embodiments of this application. Figure 47 This is a schematic diagram of the cross-sectional structure of the vibration assembly after assembly according to some embodiments of this application.

[0349] like Figure 46 and Figure 47 As shown, in some embodiments, the vibration assembly 721 may include a magnet assembly 7211, a magnetic shield 7212, a coil 7213, a vibrating plate 7214, an outer support 7215, and an inner support 7216. The magnet assembly 7211 has a magnetization direction to facilitate the formation of a relatively stable magnetic field. The magnet assembly 7211 can be a single magnet or a combination of multiple magnets (e.g., ...). Figure 46 The magnet assembly 7211 shown has three stacked magnets. The magnetic shield 7212 is mainly used to adjust the magnetic field generated by the magnet assembly 7211 in order to increase the utilization rate of the magnetic field. The coil 7213 is located in the magnetic field formed by the magnet assembly 7211, the magnetic shield 7212, etc., and generates an Ampere force under the excitation of an electrical signal (e.g., an audio signal), which in turn drives the vibrating plate 7214 to produce mechanical vibration. The outer support 7215 and the inner support 7216 cooperate with each other to support the above-mentioned structural components.

[0350] In some embodiments, the magnetic shield 7212 may include a cylindrical side portion 72121 and a bottom portion 72122, with the bottom portion 72122 connected to one end of the side portion 72121 to form a cylindrical groove 72123. A magnet assembly 7211 is disposed within the cylindrical groove 72123 and can be fixedly connected to the magnetic shield 7212 by one or a combination of methods such as adhesive bonding, snap-fitting, and threaded connection. For example, the vibration assembly 721 may also include a fixing member 7217 for fixing the magnet assembly 7211 to the bottom portion 72122. In some embodiments, the fixing member 7217 may include a bolt 72171 and a nut 72172. In this configuration, the nut 72172 is embedded within the bottom 72122 of the housing and can be fixed relative to the magnetic shield 7212 in the radial direction of the cylindrical groove 72123. The bolt 72171 passes through the magnet assembly 7211 and exits the bottom 72122 of the housing. The nut 72172 and bolt 72171 are threaded together to fix the magnet assembly 7211 and the magnetic shield 7212 relative to each other. This arrangement, with the nut 72172 embedded within the bottom 72122 of the housing, compresses the axial dimension of the vibration assembly 721 in the cylindrical groove 72123, which is beneficial for controlling the overall size of the bone conduction speaker 72. Of course, if the overall size allows, the nut 72172 can also be located on the side of the bottom 72122 of the housing away from the cylindrical groove 72123, achieving the same relative fixation between the magnet assembly 7211 and the magnetic shield 7212.

[0351] In some embodiments, when the magnet assembly 7211 and the magnetic shield 7212 are fixedly connected by the fastener 7217, an adhesive can also be provided between the magnet assembly 7211 and the magnetic shield 7212. Figure 46 and Figure 47 (not shown in the image) so that the gap between the two can be filled, thereby preventing the relative movement of the magnet assembly 7211 and the magnetic shield 7212 under mechanical vibration and the generation of noise.

[0352] In some embodiments, when the magnet assembly 7211 and the magnetic shield 7212 are fixed relative to each other, a gap is formed between them in the radial direction of the cylindrical groove 72123. Figure 47 (Not marked in the text) This gap is mainly used to accommodate the coil 7213 after the vibration assembly 721 is assembled. Therefore, in the radial direction of the cylindrical groove 72123, the size of the gap between the magnet assembly 7211 and the magnetic shield 7212 is as uniform as possible to increase the uniformity of the magnetic field distribution, thereby increasing the stability of the Ampere force generated by the coil 7213 under the action of the magnetic field.

[0353] In some embodiments, the coil 7213 is fixed to the inner support 7216 and sleeved on the outer periphery of the magnet assembly 7211. Specifically, after the vibration assembly 721 is assembled, the coil 7213 can extend into the gap formed in the radial direction of the slot 72123 between the magnet assembly 7211 and the magnetic shield 7212, so that the coil 7213 is in the magnetic field formed by the magnet assembly 7211, the magnetic shield 7212, etc., and thus generates an Ampere force under the excitation of an electrical signal. It should be noted that, in order to increase the stability of the Ampere force generated by the coil 7213 under the action of the magnetic field, the distance between the coil 7213 and the magnet assembly 7211 or the magnetic shield 7212 in the radial direction of the slot 72123 should be as equal as possible everywhere. In other words, during the initial processing and subsequent assembly of the vibration assembly 721, the coaxiality of the magnet assembly 7211, the magnetic shield 7212, the coil 7213, and other structural components should be ensured as much as possible.

[0354] In some embodiments, one end of the inner support 7216 (specifically, the end facing the magnet assembly 7211) forms a cover groove 72161. A coil 7213 is fixed to one end of the inner support 7216 and surrounds the cover groove 72161. One end of the inner support 7216 covers the magnet assembly 7211, allowing the magnet assembly 7211 to partially extend into the cover groove 72161. The coil 7213 is sleeved around the outer periphery of the magnet assembly 7211. This configuration, while meeting the sound generation requirements of the vibration assembly 721, allows for compression of the axial dimensions of the vibration assembly 721 in the cylindrical groove 72123, which is beneficial for controlling the overall size of the bone conduction speaker 72.

[0355] In some embodiments, the vibrating plate 7214 connects the outer support 7215 and the inner support 7216, and is used to limit the relative movement of the outer support 7215 and the inner support 7216 in the radial direction along the cylindrical groove 72123, so as to facilitate the assembly of the vibration assembly 721.

[0356] In some embodiments, the outer support 7215 is cylindrical, with one end of the outer support 7215 fixed to the side of the cover 72121 away from the bottom of the cover 72122. The other end of the outer support 7215 away from the magnetic cover 7212 and the other end of the inner support 7216 away from the magnet assembly 7211 are connected by a vibrating plate 7214.

[0357] In related technologies, the outer bracket 7215 and the magnetic shield 7212 are generally fixedly connected by one or a combination of methods such as adhesive bonding, snap-fit, and threaded connection. This can easily lead to assembly errors between the outer bracket 7215 and the magnetic shield 7212, meaning that the coaxiality between the two is difficult to guarantee. At this time, since the inner bracket 7216 is connected to the outer bracket 7215 via the vibrating plate 7214, assembly errors occur between the inner bracket 7216 and the magnetic shield 7212 due to the assembly errors between the outer bracket 7215 and the magnetic shield 7212. This reduces the coaxiality between the coil 7213 and the magnet assembly 7211 and the magnetic shield 7212, thereby reducing the stability of the Ampere force generated by the coil 7213 under the action of the magnetic field. In other words, the stability of the mechanical vibration generated by the coil 7213 driving the vibrating plate 7214 deteriorates, thus affecting the sound quality of the vibrating assembly 721.

[0358] Unlike related technologies, in this application, the outer bracket 7215 is fixed to the side 72121 of the cover body away from the bottom 72122 of the cover body by injection molding. That is, the outer bracket 7215 and the magnetic cover 7212 can be integrally molded metal inserts. This arrangement can effectively reduce the assembly error between the outer bracket 7215 and the magnetic cover 7212, ensure the coaxiality of structural components such as the magnet assembly 7211, the magnetic cover 7212, and the coil 7213, and thus improve the sound quality of the vibration assembly 721.

[0359] In some embodiments, the outer support 7215 has a first protruding post 72151 protruding from the other end opposite to the magnetic cover 7212, and the inner support 7216 has a second protruding post 72162 protruding from the other end opposite to the magnet assembly 7211. Correspondingly, the vibrating plate 7214 has a first through hole 72141 and a second through hole 12142 spaced apart. The first protruding post 72151 is movably inserted through the first through hole 72141, and the second protruding post 72162 is movably inserted through the second through hole 12142, thereby restricting the relative movement of the outer support 7215 and the inner support 7216 in the radial direction along the cylindrical groove 72123, while allowing the inner support 1215 and the vibrating plate 7214 to move relative to the outer support 7215 in the axial direction of the cylindrical groove 72123, so as to transmit the mechanical vibration generated by the vibration assembly 721.

[0360] Combination Figures 37 to 41According to the relevant description, in some embodiments, the vibration plate 722 is connected to the vibration assembly 721 and exposed through the opening 711 to transmit the aforementioned mechanical vibrations through the user's head to their auditory nerve, thereby enabling the user to hear sound. As an example, the vibration plate 722 is disposed at the other end of the inner support 7216 opposite to the magnet assembly 7211 and abuts against the vibrating plate 7214, so that the inner support 7216 and the vibrating plate 7214 can drive the vibration plate 722 to vibrate. In some embodiments, the bone conduction speaker 72 may further include an elastic damping plate 723. The outer edge of the elastic damping plate 723 is fixedly connected to the speaker housing 71. Figures 37 to 41 Regarding the description of the protective mesh 73, the outer edge of the elastic damping plate 723 can be located between the speaker housing 71 and the protective mesh 73. That is, the outer edge of the elastic damping plate 723 can be fixed to the speaker housing 71, and the protective mesh 73 is then fixed to the elastic damping plate 723. In some embodiments, the elastic damping plate 723 is disposed between the vibration transmission plate 722 and the other end of the inner support 7216 away from the magnet assembly 7211, so as to reduce the vibration of the inner support 7216 in the axial direction of the cylindrical groove 72123, thereby increasing the stability of the vibration of the vibration transmission plate 722.

[0361] In some embodiments, the second protruding post 72162 may include an integrally connected first post segment 72163 and second post segment 72164. The first post segment 72163 is closer to one end of the inner support 7216 than the second post segment 72164, and the cross-sectional area of ​​the second post segment 72164 is smaller than that of the first post segment 72163 in a cross-section perpendicular to the axial direction of the cylindrical groove 72123. With this configuration, the first post segment 72163 passes through the second through hole 12142, and the second post segment 72164 is inserted into the vibration transmission plate 722, so that the inner support 7216 can drive the vibration transmission plate 722 to vibrate. Further, the elastic damping plate 723 has a third through hole 1231. The elastic damping plate 723 is sleeved on the second post segment 72164 through the third through hole 1231 and supported on the first post segment 72163.

[0362] Figure 48 This is a disassembled structural diagram of an ear hook assembly according to some embodiments of this application. Figure 49 This is a disassembled structural diagram of the connecting components and ear hook housing according to some embodiments of this application. Figure 50 This is a structural schematic diagram of a second ear hook housing embodiment according to some embodiments of this application. Figure 51 This is a disassembled structural diagram of the middle channel component and the pickup assembly according to some embodiments of this application.

[0363] like Figure 48As shown, in some embodiments, the ear hook assembly 30 forms a receiving space 300 for accommodating the battery assembly 50 or the control circuit assembly 60. The ear hook assembly 30 also forms a connecting hole 340, which connects the receiving space 300 to the outside. Further, a pickup assembly 90 is disposed within the receiving space 300 and adjacent to the connecting hole 340, so that the pickup assembly 90 can pick up sound through the connecting hole 340. Based on the above detailed description, the number of ear hook assemblies 30 is two, and the number of pickup assemblies 90 can also be two accordingly. In this case, the two pickup assemblies 90 correspond one-to-one with the two receiving spaces 300, that is, each pickup assembly 90 is disposed within one receiving space 300 and adjacent to the connecting hole 340, so that both pickup assemblies 90 can pick up sound through their respective connecting holes 340.

[0364] In some embodiments, the ear hook assembly 30 may include a connecting member 34 and an ear hook housing 31 of the connecting member 34. One end of the connecting member 34 is connected to the ear hook housing 31, and the other end is connected to the speaker assembly 70. Further, each ear hook housing 31 has a receiving space 300 and a communicating hole 340 connecting the receiving space 300 to the outside. Based on the above description, the speaker assembly 70 may cause the outside air to vibrate during sound emission, resulting in "sound leakage." Therefore, the communicating hole 340 is located on the side of the ear hook housing 31 away from the speaker assembly 70 to minimize the "sound leakage" caused by the speaker assembly 70 and reduce interference from the speaker assembly 70 to the speaker assembly 90. Moreover, the speaker assembly 90 is located on the side of the receiving space 300 away from the speaker assembly 70, which also reduces the transmission of mechanical vibrations generated by the speaker assembly 70 to the speaker assembly 90, thereby reducing the occurrence of "wind noise" or other noise from the speaker assembly 90.

[0365] like Figure 49 As shown, in some embodiments, the connecting component 34 may include a first elastic cover 3401, a second elastic cover 3402, and an elastic metal wire 3403, and a guide wire 3404 may be threaded through the connecting component 34. One end of the elastic metal wire 3403 is connected to the ear hook housing 31 (specifically, the first ear hook housing 33), and the other end of the elastic metal wire 3403 is used to connect to the speaker assembly 70. Figure 49 and Figure 36One end of the wire 3404 is electrically connected to the battery assembly 50 or the control circuit assembly 60 disposed within the ear hook assembly 30, and the other end of the wire 3404 is electrically connected to the speaker assembly 70 corresponding to the ear hook assembly 30. The first elastic coating 3401 and the second elastic coating 3402 can be molded by two-color injection molding and wrap the elastic metal wire 3403 and the wire 3404. At this time, the elastic metal wire 3403 is bent and has a certain stiffness / strength to form the basic shape of the ear hook assembly 30, thereby facilitating the user to wear the device 10. The first elastic coating 3401 and the second elastic coating 3402 have a certain softness and appearance quality to improve the comfort and aesthetics of the device 10 during wear. In some embodiments, the seam between the first elastic coating 3401 and the second elastic coating 3402 divides the surface of the connecting member 34 into an inner side and an outer side that are opposite to each other. The exposed surface of the first elastic covering 3401 serves as the inner surface of the connecting member 34, and the exposed surface of the second elastic covering 3402 serves as the outer surface of the connecting member 34. It should be noted that when the device 10 is in the wearing state, the vast majority of the inner surface of the connecting member 34 is in contact with the user's ear and nearby head, while the vast majority of the outer surface of the connecting member 34 is not in contact with the user's ear and nearby head.

[0366] In some embodiments, an auxiliary metal wire is typically used when fabricating the connecting component 34. This auxiliary metal wire and the elastic metal wire 3403 are arranged side-by-side, both having approximately the same shape, length, radius of curvature, and other structural parameters. In this case, the relevant technology generally involves first forming an elastic coating on the surfaces of the auxiliary metal wire and the elastic metal wire 3403 using injection molding. Then, the auxiliary metal wire is pulled out, and the conductor 3404 is threaded through the elastic coating (i.e., in the original position of the auxiliary metal wire) to obtain the connecting component 34. However, during the injection molding process, because the auxiliary metal wire and the elastic metal wire 3403 have a certain length and radius of curvature, they (especially the middle region) may deviate from their initial positions under the impact of the incoming injection material, ultimately resulting in uneven wall thickness of the elastic coating and affecting the molding quality of the connecting component 34. Especially when the elastic coating is designed to be thin, the connecting component 34 may even experience "peeling" during long-term use of the device 10, severely impacting the user experience.

[0367] In some embodiments, the elastic coating of the related technology is not only divided into two parts, namely a first elastic coating 3401 and a second elastic coating 3402, which can be injection molded in two stages; a through groove 3405 is also formed on one side of one of the elastic coatings (e.g., the first elastic coating 3401). The through groove 3405 extends along the extending direction of the first elastic coating 3401 and is used to place the elastic metal wire 3403 and an auxiliary metal wire (which can be subsequently replaced with a conductor 3404). Further, the second elastic coating 3402 is injection molded on one side of the first elastic coating 3401 (i.e., the side where the through groove 235 is located), and covers the elastic metal wire 3403 and the auxiliary metal wire, so that after the first elastic coating 3401 and the second elastic coating 3402 are assembled and fixed, the auxiliary metal wire can be pulled out to form a lead wire channel arranged parallel to the elastic metal wire 3403 and communicating with the accommodating space 300. Figure 47 (Not marked in the text), the lead-in channel is used to thread the 3404 conductor.

[0368] In short, some embodiments of this application can obtain a first elastic coating 3401 with a through groove 3405 through a first injection molding process. Then, an elastic metal wire 3403 and an auxiliary metal wire are placed within the through groove 3405. Next, a second elastic coating 3402 is formed on one side of the through groove 3405 of the first elastic coating 3401 through a second injection molding process to wrap the elastic metal wire 3403 and the auxiliary metal wire. Finally, the auxiliary metal wire is pulled out to form a lead wire channel, and a wire 3404 is threaded through the lead wire channel (i.e., the original location of the auxiliary metal wire) to obtain the connecting component 34. Clearly, because the through groove 3405 has a certain depth, the first elastic coating 3401 can partially wrap the elastic metal wire 3403 and the auxiliary metal wire, thus limiting their movement and allowing them to withstand the impact of the injection molding material. This helps to improve the technical problem of the elastic metal wire 3403 and the auxiliary metal wire deviating from their initial position. For example, the depth of the through-slot 3405 can be equal to the radius of the larger diameter of the elastic metal wire 3403 and the auxiliary metal wire. In some embodiments, there can be two through-slots 3405, arranged side by side and used to house the elastic metal wire 3403 and the auxiliary metal wire respectively, so that the lead channel (i.e., the location of the wire 3404) and the elastic metal wire 3403 are separated from each other, thus preventing interference between the elastic metal wire 3403 and the auxiliary metal wire (or the subsequently installed wire 3404). In other embodiments, there is only one through-slot 235, in which the elastic metal wire 3403 and the auxiliary metal wire are housed together, allowing the elastic metal wire 3403 to be exposed in the lead channel, which simplifies the structure of the connecting component 34.

[0369] In some embodiments, the first elastic coating 3401 and the second elastic coating 3402 may be formed first, and then a through groove 3405 may be formed on the first one, and then the other one may be formed on the first one. Figure 14 The structure shown is merely an exemplary description of this embodiment and is not limited to the only way in this embodiment. For example, it can be formed first. Figure 47 A second elastic coating 3402 is formed, with a through groove 3405, and then a first elastic coating 3401 is formed. In other words, it is equivalent to... Figure 47 The second elastic coating 3402 shown serves as the first elastic coating. Figure 47 The first elastic coating 3401 shown is used as the second elastic coating.

[0370] In some embodiments, the ear hook housing 31 is fixed to one end of the elastic metal wire 3403 by injection molding. A second elastic coating 3402 further covers at least a portion of the outer surface of the ear hook housing 31, and a first elastic coating 3401 stops between the ear hook housing 31 and the speaker assembly 70. As an example, the ear hook housing 31 may include a first ear hook housing 33 and a second ear hook housing 35, which are connected to form an accommodating space 300. The first ear hook housing 33 is fixedly connected to one end of the connecting member 34 (specifically, the elastic metal wire 3403) by injection molding, and the second ear hook housing 35 is fixedly connected to the first ear hook housing 33. In this case, the second elastic coating 3402 covers the outer surface of the first ear hook housing 33, and the first elastic coating 3401 stops between the second ear hook housing 35 and the speaker assembly 70.

[0371] Based on the above detailed description, the molding process of the ear hook assembly 30 can be as follows: 1) forming a speaker assembly 70 and a first ear hook housing 33 at both ends of the elastic metal wire 3403 respectively; 2) obtaining a first elastic coating 3401 with a through groove 3405 by a first injection molding process; 3) assembling the first elastic coating 3401 in step 2) with the semi-finished product and auxiliary metal wire in step 1); 4) forming a second elastic coating 3402 on the side of the through groove 3405 of the first elastic coating 3401 by a second injection molding process to wrap the elastic metal wire 3403 and auxiliary metal wire, and to cover the outer surface of the first ear hook housing 33; 5) pulling out the auxiliary metal wire of the semi-finished product in step 4) to form a lead wire channel, and then threading a wire 3404 through the lead wire channel; 6) fixing the second ear hook housing 35 with the first ear hook housing 33 in step 5) by one or a combination of methods such as adhesive bonding, snap-fit, and threaded connection.

[0372] like Figure 48As shown, in some embodiments, a receiving groove 25 for accommodating the pickup assembly 90 is also formed within the accommodating space 300. As an example, the second ear hook housing 35 may include a bottom wall 356 and a side wall 357 circumferentially connected to the bottom wall 356. The first ear hook housing 33 covers the side wall 357 and is disposed opposite to the bottom wall 356 to form the accommodating space 300. In this case, a connecting hole 340 may be formed in the side wall 357. Specifically, as... Figure 47 As shown, the connecting hole 340 can be formed at position C on the second ear hook housing 35. Based on the above description, the connecting hole 340 is formed on the side of the side wall 357 away from the connecting member 34 to minimize the interference of the speaker assembly 70 on the pickup assembly 90. Furthermore, a flange 358 protrudes from the bottom wall 356 towards the first ear hook housing 33. The flange 358 not only forms the receiving groove 25 but also serves to limit and fix the pickup assembly 90. In some embodiments, the connecting hole 340 can also be formed in other positions, for example... Figure 49 The O position on the first ear hook housing 33 shown, for example, Figure 49 Positions B, D, and E on the second ear hook housing 35 are shown.

[0373] In some embodiments, if the pickup component 90 is directly connected to the outside world through the connecting hole 340, the acoustic path between the pickup component 90 and the outside world will be short. When the device 10 is in a complex environment (e.g., with strong airflow), the pickup component 90 will pick up more noise, even causing "wind noise". Therefore, as Figure 48 and Figure 49 As shown, this application provides a channel 26 between the pickup assembly 90 and the connecting hole 340 to extend the sound path of the pickup assembly 90, thereby improving the pickup effect of the pickup assembly 90.

[0374] In some embodiments, the channel member 26 is disposed within the accommodating space 300 and has a sound inlet 261, a channel 262, and a sound outlet 263. The sound inlet 261 and the sound outlet 263 are spaced apart and respectively connected to the channel 262. For example, the shortest distance from the sound inlet 261 to the sound outlet 263 via the channel 262 is greater than or equal to 4 mm, in order to extend the acoustic path of the pickup assembly 90. Further, the sound inlet 261 is connected to the connecting hole 340, and the sound outlet 263 is disposed adjacent to the pickup assembly 90, so that sound can be transmitted sequentially through the connecting hole 340, the sound inlet 261, the channel 262, and the sound outlet 263 to the pickup assembly 90. At this time, the channel component 26 can cover the flange 358, that is, the channel component 26 covers the receiving groove 25 and is used to press the pickup assembly 90 into the receiving groove 25. The sound inlet 261 faces the side wall 357 and is connected to the connecting hole 340, and the sound outlet 263 is connected to the pickup assembly 90. With this configuration, the channel component 26 not only extends the sound path of the pickup assembly 90, but also achieves the fixation of the pickup assembly 90, that is, the channel component 26 can serve two purposes.

[0375] In some embodiments, the connecting hole 340 can be slit-shaped, and the sound inlet hole 261 can be correspondingly slit-shaped to increase the contact area between the sound path of the pickup assembly 90 and the outside world, thereby improving the sound pickup effect of the pickup assembly 90. Based on the above description, if the contact area between the sound path of the pickup assembly 90 and the outside world is too large, it may cause "wind noise" and also greatly reduce the waterproof and dustproof performance of the ear hook assembly 30. To this end, this application provides a windproof mesh cover 27 in the sound path of the pickup assembly 90. As an example, the windproof mesh cover 27 abuts between the channel member 26 and the ear hook housing 31, thereby separating the connecting hole 340 and the sound inlet hole 261 to improve the windproof noise reduction of the pickup assembly 90 and improve the waterproof and dustproof performance of the ear hook assembly 30. The windproof mesh cover 27 may include a layered iron mesh 271 and a mesh 272, with the mesh 272 closer to the channel member 26 than the iron mesh 271. It should be noted that the structural strength of the iron mesh 271 is greater than that of the gauze 272, while the mesh count of the gauze 272 is greater than that of the iron mesh 271. The two work together to ensure that the windproof cover 27 can meet its own structural strength, the sound pickup requirements of the pickup component 90, and the waterproof and dustproof requirements of the ear hook component 30.

[0376] like Figure 49As shown, in some embodiments, the channel member 26 may include a channel top wall 264, a channel bottom wall 265, and a channel side wall 266 surrounding the channel 262. The channel top wall 264 and channel bottom wall 265 are disposed opposite to each other, and the channel side wall 266 connects the channel top wall 264 and channel bottom wall 265. Further, a sound inlet 261 is formed in the channel side wall 266, and a sound outlet 263 penetrates through the channel bottom wall 265. In this case, the channel bottom wall 265 can also be used to hold the pickup assembly 90. As an example, the channel top wall 264 and channel bottom wall 265 are arranged parallel and spaced apart, so that the channel 262 is flat to adapt to the flat structure of the ear hook housing 31. The height of the channel 262 in the direction from the channel top wall 264 to the channel bottom wall 265 can be 0.45-0.75 mm. For example, the height of the channel 262 in the direction from the channel top wall 264 to the channel bottom wall 265 can be 0.65 mm.

[0377] In some embodiments, the pickup assembly 90 may include a pickup element 91 and a protective sleeve 92. The protective sleeve 92 is fitted around the outer periphery of the pickup element 91. Further, the protective sleeve 92 has a groove 921 facing the bottom wall 265 of the channel, and the pickup element 91 is at least partially exposed in the groove 921. This arrangement ensures that when the channel member 26 presses the pickup assembly 90 into the receiving groove 25, the protective sleeve 92 abuts against and tightly engages with the flange 358, and the groove 921 and the sound outlet 263 are connected. In this case, the protective sleeve 92 can be a silicone sleeve, allowing it to elastically deform during the assembly process, thereby increasing the fixing effect of the flange 358 on the pickup assembly 90 and improving the sealing of the acoustic path between the pickup assembly 90 and the channel member 26, thus improving the pickup effect of the pickup assembly 90. Furthermore, the protective cover 92 and the pickup element 91 can be tightly fitted together, and the pickup part (specifically, the diaphragm) of the pickup element 91 can be exposed in the groove 921, so that after the sound is transmitted to the groove 921, it is not easy to leak from between the protective cover 92 and the pickup element 91 to the back side of the pickup element 91, thereby better maintaining the pickup effect of the pickup element 91.

[0378] Based on the detailed description above, the number of ear hook assemblies 30 can be two. In this case, the number of pickup assemblies 90 and the number of channel components 26 are also two. Specifically, each ear hook assembly 30 has one pickup assembly 90 and one channel component 26 within its accommodating space 300 to improve the pickup effect of each pickup assembly 90. Furthermore, the number of speaker assemblies 70 is also two, with each ear hook assembly 30 connected to one speaker assembly 70. With this arrangement, when the user wears the device 10, the two speaker assemblies 70 can be positioned on either side of the user's head to form stereo sound, thereby improving the acoustic performance of the device 10.

[0379] In some embodiments, the two speaker assemblies 70 are mostly electrically connected to the same motherboard (e.g., the main circuit board 61 mentioned later), and the two speaker assemblies 70 are adjusted via a set of volume control buttons (e.g., volume buttons 62 mentioned later). In this case, the volume of the two speaker assemblies 70 increases or decreases synchronously under the adjustment of the volume control buttons. While this configuration simplifies the adjustment and control of the speaker assemblies 70 for users with normal hearing and also simplifies the overall structure of the device, it may result in users with hearing impairments experiencing uneven sound levels, thus affecting their user experience. Therefore, this application provides a set of volume buttons 62 on each of the two ear hook assemblies 30 to adjust the corresponding speaker assembly 70. That is, the two speaker assemblies 70 can be controlled by two separate sets of volume buttons 62, allowing users to adjust the two speaker assemblies 70 according to their actual usage needs.

[0380] Figure 52 This is a schematic diagram of the circuit structure of a control circuit assembly according to some embodiments of this application.

[0381] like Figure 52 As shown, in some embodiments, the control circuit assembly 60 may include a main circuit board 61 and two sets of volume buttons 62. The battery assembly 50 is housed within the receiving space 300 of one ear hook housing 31, and the main circuit board 61 is housed within the receiving space 300 of the other ear hook housing 31, to facilitate weight distribution of the equalization device 10. Furthermore, the main circuit board 61 integrates two independent audio processing chips (…). Figure 52 (Not shown in the image), the audio gain of each of the two speaker assemblies 70 is controlled independently. The audio processing chip is, for example, an audio processing DSP chip.

[0382] In some embodiments, such as Figure 52 As shown, each ear hook housing 31 (specifically, the second housing 242) has a volume button hole 28 that communicates with the accommodating space 300. Each set of volume buttons 62 is correspondingly disposed in a volume button hole 28 of one ear hook housing 31 and is exposed through the volume button hole 28, allowing the user to control the corresponding audio processing chip on the main circuit board 61 by pressing the volume buttons 62, thereby adjusting the audio gain of the corresponding speaker assembly 70.

[0383] In some embodiments, the control circuit assembly 60 may further include a secondary circuit board 63 disposed within the receiving space 300 of the ear hook housing 31 housing the battery assembly 50; that is, the secondary circuit board 63 and the battery assembly 50 are disposed within the same receiving space 300 of the ear hook housing 31. In this case, the secondary circuit board 63 may cover the corresponding volume button hole 28 and abut against the volume button 62 to withstand the pressing pressure applied by the user to the volume button 62. Moreover, the secondary circuit board 63 may be coupled to the main circuit board 61 so that the main circuit board 61 can handle the pressing operation of the volume button 62 coupled to the secondary circuit board 63.

[0384] Based on the detailed description above, in some embodiments of the device 10, one end of the rear-hook assembly 40 may be provided with an ear hook assembly 30 and a corresponding speaker assembly 70, a pickup assembly 90 and its channel component 26, a battery assembly 50, a secondary circuit board 63, and a set of volume buttons 62; the other end may be provided with an ear hook assembly 30 and a corresponding speaker assembly 70, a pickup assembly 90 and its channel component 26, a main circuit board 61, and a set of volume buttons 62. The various electrical components located at both ends of the rear-hook assembly 40 can be electrically connected via wires embedded in the rear-hook assembly 40 to transmit control commands, electrical energy, etc.

[0385] In some embodiments, since the main circuit board 61 is generally smaller than the battery assembly 50, a function button 64 can also be provided on the side where the main circuit board 61 is located. The function button 64 can replace the corresponding volume button 62, or it can coexist with the volume button 62, and can realize functions such as play / pause, AI wake-up, power on / off, etc., to expand the interactive capabilities of the device 10.

[0386] Figure 53 This is a schematic diagram of the disassembled structure of the ear hook housing according to some embodiments of this application.

[0387] In some embodiments, such as Figure 53As shown, the control circuit assembly 60 may further include a function button 64 and a waterproof liner 65. A function switch 66 is provided on the main circuit board 61. A sliding hole 29 is provided on the ear hook housing 31 (specifically, the first ear hook housing 33) housing the main circuit board 61. The sliding hole 29 communicates with the accommodating space 300. The function button 64 is slidably disposed within the sliding hole 29 and can toggle the function switch 66. Further, the waterproof liner 65 is disposed within the accommodating space 300 of the ear hook housing 31 housing the main circuit board 61 and is fixedly connected to the ear hook housing 31 housing the main circuit board 61, forming a waterproof barrier between the main circuit board 61 and the corresponding ear hook housing 31. The waterproof liner 65 has a liner hole 651, which can correspond to the sliding hole 29, for example, coaxial and equal in size. In this case, the function button 64 is slidably disposed within the sliding hole 29 and the liner hole 651 to facilitate toggle the function button 64.

[0388] Figure 54 This is a disassembly diagram of the function buttons and waterproof liner according to some embodiments of this application. Figure 55 A cross-sectional structural diagram of the ear hook assembly along the tossing direction of the function button, as shown in some embodiments of this application.

[0389] like Figure 54 and Figure 55 As shown, in some embodiments, the function button 64 may include an integrally connected sliding portion 641 and a connecting portion 642. The connecting portion 642 is disposed on one side of the sliding portion 641 and extends away from the sliding portion 641, while the other side of the sliding portion 641 away from the connecting portion 642 is exposed through a sliding hole 29. Further, the connecting portion 642 may include two connecting plates 643 disposed opposite to each other on the sliding portion 641. Each of the two connecting plates 643 has a protruding latch 644 extending away from each other on its side away from the sliding portion 641, so that the connecting portion 642 can engage the side of the waterproof liner 65 away from the sliding portion 641. In this case, one of the connecting plates 643 also has a switch receiving area 645 on its side away from the sliding portion 641. The switch receiving area 645 is used to receive the function switch 66, thereby enabling the function button 64 to toggle the function switch 66. With this configuration, on the one hand, the function button 64 can be engaged with the function switch 66, so that the user can toggle the function switch 66 by using the function button 64; on the other hand, the function button 64 can also be engaged with the ear hook housing 31 and the waterproof liner 65 to prevent the function button 64 from falling off the ear hook housing 31 and to improve the waterproof and dustproof performance of the ear hook housing 31 at the function button 64.

[0390] In some embodiments, the waterproof liner 65 has a protrusion 652 extending around the liner hole 651 on the side facing the sliding portion 641, meaning the protrusion 652 can be arranged circumferentially around the liner hole 651. This arrangement ensures that when the function button 64 is engaged with the ear hook housing 31 and the waterproof liner 65, the protrusion 652 abuts against one side of the sliding portion 641, and the connecting portion 642 passes through the sliding hole 29 and the liner hole 651, and can move within the sliding hole 29 and the liner hole 651 to toggle the function switch 66. By rationally designing the structure of the function button 64, the waterproof liner 65, and their engagement with the ear hook housing 31, the protrusion 652 can always remain abutting against one side of the sliding portion 641 during the movement of the connecting portion 642 within the liner hole 651, thus ensuring the waterproof and dustproof performance of the ear hook housing 31 at the function button 66.

[0391] In some embodiments, the function button 64, the waterproof liner 65, and the housing (specifically, the first ear hook housing 33 and the second ear hook housing 35) can cooperate to form a waterproof button assembly.

[0392] Figure 56 This is a schematic diagram showing the relationship between the wind noise threshold of the sound pickup component and its position in a device according to some embodiments of this application.

[0393] See Figure 56 In some embodiments, Figure 56 This is a schematic diagram showing the relationship between the howling threshold of the pickup component in the sound-generating device provided in this application and its location. It should be noted that: Figure 56 The horizontal axis represents the relative position of the pickup component on the sound-generating device, and the vertical axis represents the howling threshold of the pickup component (in dB).

[0394] Based on the above description, the pickup component 90 is mainly used to pick up the user's voice and ambient sounds from the user's environment. For hearing-impaired individuals, the pickup effect of the pickup component 90 will affect the clarity and stability of the sound received by the hearing-impaired through the device 10. Theoretically, the pickup component 90 can be placed at any position on the device 10, but the inventors of this application have found in their long-term research that the closer the pickup component 90 is to the speaker assembly 70, the more easily it is affected by the speaker assembly 70, and the more easily "feedback" is caused by acoustic coupling between the two. Therefore, in combination with... Figure 36 and Figure 49 This application conducted multiple experiments on the relationship between the howling threshold of the pickup component 90 and its relative position on the device 10, and the corresponding experimental results are as follows: Figure 56 As shown in the figure. The larger the feedback threshold, the lower the probability of feedback phenomenon in the pickup component 90, and the less it is affected by the speaker component 70.

[0395] In some embodiments, such as Figure 49 As shown, the pickup assembly 90 can be mounted on the ear hook assembly 30; as Figure 36 As shown, the pickup assembly 90 can also be mounted on the rear ear hook assembly 40. Specifically, regarding the ear hook assembly 30, in conjunction with... Figure 13 Because the ear hook housing 31 is further away from the speaker assembly 70 than the connecting component 34, the pickup assembly 90 can correspond to the first ear hook housing 33 and the second ear hook housing 35. Combined Figure 49 and Figure 36 The relative position O can correspond to the first ear hook housing 33, and the relative positions B, C, D, and E can correspond to the second ear hook housing 35. Specifically, when the device 10 is in the wearing state, the relative position O is located on the outside of the ear hook assembly 30 away from the user's head, the relative positions B and E are located above the ear hook assembly 30, and the relative position E is further away from the speaker assembly 70 than the phase position B, the relative position D is located below the ear hook assembly 30, and the relative position C is located behind the ear hook assembly 30 away from the speaker assembly 70. Further, for the rear hook assembly 40, the relative positions F, G, H, and I are sequentially away from the speaker assembly 70. Among them, the relative position I can correspond to the middle position of the rear hook assembly 40.

[0396] like Figure 56 As shown, in some embodiments, the feedback threshold at relative position O is used as a reference, that is, the feedback threshold at relative position O is defined as 0. The feedback thresholds at relative positions B, C, D, E, F, G, H, and I are all greater than 0, indicating that placing the pickup assembly 90 at these positions is beneficial for improving the aforementioned feedback phenomenon. Furthermore, the feedback thresholds at relative positions F, G, H, and I are significantly higher than those at relative positions B, C, D, and E, indicating that placing the pickup assembly 90 on the rear-hook assembly 40 is more beneficial for improving the aforementioned feedback phenomenon. It is worth noting that for the ear hook assembly 30, the feedback thresholds at relative positions C and E are also significantly higher than those at relative positions B and D, indicating that placing the pickup assembly 90 on the ear hook assembly 30 further away from the speaker assembly 70 is more beneficial for improving the aforementioned feedback phenomenon. For relative position E, structural interference may occur between the ear hook assembly 30 and the rear-hook assembly 40; therefore, placing the pickup assembly 90 at position C on the ear hook assembly 30 is preferred.

[0397] The beneficial effects that the embodiments of this application may bring include, but are not limited to: (1) This application provides a device in which the manufacturing process of the back-hook component is carried out by extrusion molding, so that the semi-finished product including the elastic cover body and the wire of the integral structure can be made in one step during the processing. Furthermore, the inside of the cover body is further formed with a wire channel that extends generally along its axis. Then, the above-mentioned semi-finished product is cut into small segments of corresponding lengths to facilitate subsequent processing steps such as threading the elastic metal wire into the wire channel. This can effectively improve the manufacturing efficiency of the back-hook component, thereby increasing the production capacity and benefits of the product. (2) This application has two sets of slots along its length by at least one insertion part. One set of slots is engaged with the ear hook component to limit the relative movement of the ear hook component and the back-hook component, thereby enhancing the structural stability of the bone conduction headphones. The other set of slots 441 is used for mold positioning. The insertion part 44 can be precisely fixed at a certain position on the mold so that the manufacturing of the back-hook component on the mold can be precisely carried out in accordance with the corresponding process. Since the positioning accuracy of the insertion part on the mold is improved, the yield rate can be effectively improved. (3) This application provides a device in which the ear hook shell and the back hook assembly are adjustable under the user's insertion and extraction force, so that the earphone can adapt to different users' head sizes; and under the action of the positioning mechanism, after the user adjusts the insertion depth of the back hook assembly relative to the ear hook shell to a certain usage state, the usage state can be maintained, thereby meeting the user's usage needs. (4) This application also provides a connecting assembly with multiple conformal lines conformally arranged on its base, so that the conformal lines can be closely attached to the base, thereby reducing the space between multi-strand wires and elastic metal wires and other structural components in related technologies, thereby making the connecting assembly more compact in structure. (5) This application divides the elastic coating into two parts, namely the first elastic coating and the second elastic coating, which can be injection molded in two parts; and a through groove is formed on one side of the first elastic coating. The through groove extends along the extension direction of the first elastic coating and is used to place the elastic metal wire and the auxiliary metal wire. Further, the second elastic coating is injection molded on the side of the first elastic coating where the through groove is located, and covers the elastic metal wire and the auxiliary metal wire. During this process, because the channel has a certain depth, the first elastic coating can partially wrap the elastic metal wire and the auxiliary metal wire to limit them, thereby enabling the elastic metal wire and the auxiliary metal wire to withstand the impact of the injection molding material. This helps to improve the technical problem of the elastic metal wire and the auxiliary metal wire deviating from their initial position, so that the wall thickness of the elastic coating in the ear hook assembly can be more uniform.

[0398] The basic concepts have been described above. Obviously, for those skilled in the art, the detailed disclosure above is merely illustrative and does not constitute a limitation of this application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and corrections to this application. Such modifications, improvements, and corrections are suggested in this application, and therefore remain within the spirit and scope of the exemplary embodiments of this application.

[0399] Furthermore, this application uses specific terms to describe embodiments of the application. For example, "an embodiment," "one embodiment," and / or "some embodiments" refer to a particular feature, structure, or characteristic related to at least one embodiment of the application. Therefore, it should be emphasized and noted that "an embodiment," "one embodiment," or "an alternative embodiment" mentioned twice or more in different locations in this specification do not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of the application can be appropriately combined.

[0400] Furthermore, those skilled in the art will understand that aspects of this application can be described and illustrated through several patentable types or situations, including any new and useful combination of processes, machines, products, or substances, or any new and useful improvements thereof. Accordingly, aspects of this application can be implemented entirely by hardware, entirely by software (including firmware, resident software, microcode, etc.), or by a combination of hardware and software. All of the above hardware or software may be referred to as “data block,” “module,” “engine,” “unit,” “component,” or “system.” Furthermore, aspects of this application may manifest as a computer product located on one or more computer-readable media, the product including computer-readable program code.

[0401] Computer storage media may contain a propagated data signal containing computer program code, for example, on baseband or as part of a carrier wave. This propagated signal may take various forms, including electromagnetic, optical, and other suitable combinations thereof. Computer storage media can be any computer-readable medium other than a computer-readable storage medium, which can be connected to an instruction execution system, apparatus, or device to enable communication, propagation, or transmission of a program for use. The program code located on the computer storage medium can be propagated through any suitable medium, including radio, cable, fiber optic cable, RF, or similar media, or any combination of the above media.

[0402] Furthermore, unless expressly stated in the claims, the order of processing elements and sequences, the use of numbers and letters, or other names described in this application are not intended to limit the order of the processes and methods of this application. Although various examples have been discussed in the foregoing disclosure of some embodiments that are currently considered useful, it should be understood that such details are for illustrative purposes only, and the appended claims are not limited to the disclosed embodiments. Rather, the claims are intended to cover all modifications and equivalent combinations that conform to the substance and scope of the embodiments of this application. For example, while the system components described above can be implemented by hardware devices, they can also be implemented solely by software solutions, such as installing the described system on existing processing devices or mobile devices.

[0403] Similarly, it should be noted that, in order to simplify the description of the present application and thus aid in the understanding of one or more embodiments of the invention, the foregoing description of the embodiments of the present application sometimes combines multiple features into a single embodiment, drawing, or description thereof. However, this disclosure method does not imply that the subject matter of the application requires more features than those mentioned in the claims. In fact, the embodiments contain fewer features than all the features of the single embodiments disclosed above.

[0404] In some embodiments, numbers describing the quantity of components and attributes are used. It should be understood that such numbers used in the description of embodiments are modified in some examples with the terms "approximately," "approximately," or "generally." Unless otherwise stated, "approximately," "approximately," or "generally" indicates that the numbers are allowed to vary by ±20%. Accordingly, in some embodiments, the numerical parameters used in the specification and claims are approximate values, which may be changed depending on the characteristics required by individual embodiments. In some embodiments, numerical parameters should take into account specified significant digits and employ a general method of digit reservation. Although the numerical ranges and parameters used to confirm their breadth of range in some embodiments of this application are approximate values, in specific embodiments, such values ​​are set as precisely as feasible.

[0405] For each patent, patent application, patent application publication, and other material such as articles, books, specifications, publications, and documents referenced in this application, the entire contents of that patent are incorporated herein by reference. This excludes historical application documents that are inconsistent with or conflict with the content of this application, as well as documents that limit the broadest scope of the claims in this application (currently or subsequently appended to this application). It should be noted that if there are any inconsistencies or conflicts between the descriptions, definitions, and / or terminology used in the supplementary materials of this application and the content of this application, the descriptions, definitions, and / or terminology used in this application shall prevail.

[0406] Finally, it should be understood that the embodiments described in this application are merely illustrative of the principles of the embodiments of this application. Other modifications may also fall within the scope of this application. Therefore, alternative configurations of the embodiments of this application are considered as examples and not limitations, and are regarded as consistent with the teachings of this application. Accordingly, the embodiments of this application are not limited to the embodiments explicitly described and illustrated in this application.

Claims

1. A sound-generating device, characterized in that, include: Speaker assembly; An ear hook assembly includes a connecting component and an ear hook housing connected to the connecting component. The ear hook housing forms an accommodating space for accommodating a battery assembly or a control circuit assembly. The connecting component includes a first elastic cover, a second elastic cover, and an elastic metal wire. One end of the elastic metal wire is connected to the ear hook housing, and the other end of the elastic metal wire is used to connect to the speaker assembly. There are two ear hook assemblies, which are used to hang on the outside of the user's two ears respectively. A rear-hook assembly, which is curved in shape, is used to connect the two ear hook assemblies and is wrapped around the back of the user's head. The rear-hook assembly includes a base, multiple lines, and a cover. Wherein, at least one through groove is formed on one side of the first elastic coating, the at least one through groove extends along the extending direction of the first elastic coating, the at least one through groove is used to place the elastic metal wire, the second elastic coating covers the side of the first elastic coating and forms a lead wire channel with the first elastic coating, the lead wire channel is used to place the lead wire connecting the speaker assembly and the battery assembly or the control circuit assembly. The ear hook housing includes a first ear hook housing and a second ear hook housing. The first ear hook housing and the second ear hook housing are connected to form the accommodating space. The first ear hook housing is fixedly connected to the elastic metal wire by injection molding. In the wearing state, the first ear hook housing is located on the side of the second ear hook housing away from the user's head. The second elastic cover covers the outer surface of the first ear hook housing, and the first elastic cover stops between the second ear hook housing and the speaker assembly; The substrate is curved along its length. On a reference cross section perpendicular to the length of the substrate, the plurality of lines conformally fit onto the surface of the substrate and are spaced apart from each other. The surface of the substrate is planar, and the surface of the lines in contact with the substrate is also planar, or the surface of the substrate is arcuate, and the surface of the lines in contact with the substrate is also arcuate. The plurality of lines further extend from the first end of the substrate to the second end along the length direction of the substrate; The covering material wraps around the periphery of the plurality of lines and the substrate; The plurality of lines are used to realize electrical connections between electrical devices respectively mounted on the first and second ends of the substrate.

2. The sound-generating device according to claim 1, characterized in that, The ear hook assembly comprises two parts, each for attaching to the outside of the user's ears; the sound-generating device further includes: The rear-hook assembly is curved and is used to connect the two ear hook assemblies and wrap around the back of the user's head. The rear-hook assembly includes an elastic metal wire, a wire, and an elastic cover that covers the elastic metal wire and the wire.

3. The sound-generating device according to claim 2, characterized in that, The elastic covering and the wire are an integral extruded structure. The elastic covering further forms a threading channel, and the elastic metal wire is threaded through the threading channel. The diameter of the threading channel in its natural state is smaller than the diameter of the elastic metal wire, so that the elastic metal wire remains fixed to the elastic covering body after being inserted into the threading channel; The number of conductors is at least two strands, each strand of which includes a metal wire and an insulating layer covering the metal wire, the insulating layer providing electrical insulation between the metal wires.

4. The sound-generating device according to claim 2, characterized in that, The rear hanging assembly further includes insertion portions disposed at both ends of the elastic metal wire. The insertion portions are used to engage with the ear hook assembly. At least one of the insertion portions has two sets of slots spaced apart in its length direction. One set of slots is used to engage with the ear hook assembly, and the other set of slots is used for mold positioning.

5. The sound-generating device according to claim 4, characterized in that, Each set of slots includes two slots arranged opposite to each other, the two slots extending from the edges of the insertion part located on both sides of its central axis toward the central axis.

6. The sound-generating device according to claim 2, characterized in that, The ear hook housing is curved to hang on the outside of the user's ear. The ear hook housing has a cavity structure and is provided with an installation port. The rear hook assembly is partially inserted into the ear hook housing through the installation port.

7. The sound-generating device according to claim 6, characterized in that, The rear hook assembly can adjust the insertion depth relative to the ear hook housing under the action of the user's insertion and extraction force. A positioning mechanism is provided between the ear hook housing and the rear hook assembly. The positioning mechanism is used to keep the rear hook assembly and the ear hook housing relatively fixed after the user releases the insertion and extraction force.

8. The sound-generating device according to claim 7, characterized in that, The rear-mount assembly also includes a connector post. The elastic metal wire is bent and the connector post is disposed at the end of the elastic metal wire and is partially inserted into the ear hook housing via the mounting port. The positioning mechanism is disposed between the ear hook housing and the insertion portion of the connector post relative to the ear hook housing.

9. The sound-generating device according to claim 8, characterized in that, The positioning mechanism includes a positioning recess and a positioning protrusion, one of which can engage with the other of the positioning recess and the positioning protrusion in sequence as the insertion depth of the connector relative to the ear hook housing changes. The positioning protrusion is configured to disengage from the positioning recess after the user's insertion or extraction force exceeds a preset threshold, thereby achieving adjustment of the insertion depth.

10. The sound-generating device according to claim 9, characterized in that, The positioning mechanism further includes an elastic element for elastically pressing the positioning protrusion into the positioning recess.

11. The apparatus according to claim 10, characterized in that, The elastic element is an elastic cantilever, one end of which is connected to the ear hook housing. The positioning protrusion is provided on the elastic cantilever, and the positioning recess is provided on the connector post.

12. The sound-generating device according to claim 10, characterized in that, The elastic element is a spring, and a mounting base is provided inside the ear hook housing. The mounting base forms a receiving cavity for accommodating the spring and the positioning protrusion. The spring elastically supports the positioning protrusion so that the positioning protrusion is partially exposed from the receiving cavity. The positioning recess is provided on the connector post.

13. The sound-generating device according to claim 12, characterized in that, The positioning protrusion is spherical, and the ratio between the embedding depth of the positioning protrusion relative to the positioning recess and the radius of the positioning protrusion is 1 / 3 to 2 / 3.

14. The sound-generating device according to claim 8, characterized in that, A stop mechanism is further provided between the ear hook housing and the insertion post, which is used to limit the maximum and / or minimum insertion depth of the insertion post relative to the ear hook housing.

15. The sound-generating device according to claim 8, characterized in that, The connector is provided with a lead wire groove, and the rear hanging assembly further includes a conductor embedded in the lead wire groove, the conductor extending a certain length from the end of the connector that is inserted into the ear hook housing; The ear hook housing is further provided with a guiding mechanism for guiding the portion of the conductor extending from the plug during the insertion and removal of the plug relative to the ear hook housing.

16. The sound-generating device according to claim 15, characterized in that, The guiding mechanism includes a first guiding mechanism and a second guiding mechanism. The first guiding mechanism is located on one side of the portion of the conductor extending from the connector post. The second guiding mechanism is spaced apart from the first guiding mechanism and located on the other side of the portion of the conductor extending from the connector post. The portion of the conductor extending from the connector post is bent from the side where the second guiding mechanism is located toward the side where the first guiding mechanism is located.

17. The sound-generating device according to claim 1, characterized in that, The substrate includes an elastic metal wire and an insulating layer surrounding the elastic metal wire. The circuits are conformally disposed on the insulating layer, and the plurality of circuits are metal layers attached and fixed to the insulating layer.

18. The sound-generating device according to claim 17, characterized in that, The substrate further includes a bonding layer disposed between the elastic metal wire and the insulating layer, wherein the bonding layer has a greater adhesion coefficient to the elastic metal wire than the insulating layer has a greater adhesion coefficient to the elastic metal wire.

19. The sound-generating device according to claim 17, characterized in that, The elastic metal wire is further used to realize electrical connection between electrical devices respectively mounted on the first and second ends of the substrate.

20. The sound-generating device according to claim 17, characterized in that, On the reference cross section, the substrate has a first surface and a second surface facing away from each other, and the plurality of lines are divided into two groups, with the first group of lines conformally disposed on the first surface and the second group of lines conformally disposed on the second surface.

21. The sound-generating device according to claim 20, characterized in that, The number of lines in the first group of lines is less than the number of lines in the second group of lines, and the cross-sectional area of ​​the lines in the first group of lines is greater than the cross-sectional area of ​​the lines in the second group of lines at the reference cross-section.

22. The sound-generating device according to claim 21, characterized in that, On the reference cross section, each line has a width along the first or second surface it is located on, and a thickness in a direction perpendicular to the first or second surface, wherein the width of the line in the first group of lines is greater than the width of the line in the second group of lines.

23. The sound-generating device according to claim 22, characterized in that, The first group of circuits consists of two circuits, which are used to form a current loop between the battery assembly mounted on the first end of the substrate and the motherboard mounted on the second end of the substrate.

24. The sound-generating device according to claim 23, characterized in that, The second group of circuits consists of four circuits, which are paired to form current loops between the mainboard mounted on the second end of the substrate and the mechanism mounted on the first end of the substrate, and between the mainboard and the function button mounted on the first end of the substrate.

25. The sound-generating device according to claim 23, characterized in that, The substrate includes an elastic metal wire. The second set of circuits consists of three wires. Two of the wires in the second set cooperate with each other, and the remaining one cooperates with the elastic metal wire to form current loops between the main board mounted on the second end of the substrate and the movement mounted on the first end of the substrate, and between the main board and the function button mounted on the first end of the substrate.

26. The sound-generating device according to claim 20, characterized in that, On the reference cross section, the width of the first surface and the second surface is greater than the distance between the first surface and the second surface, and one of the first surface and the second surface faces the inner side of the curved shape of the substrate, while the other of the first surface and the second surface faces the outer side of the curved shape of the substrate.

27. The sound-generating device according to claim 1, characterized in that, The first elastic coating and the second elastic coating include at least one seam.

28. The sound-generating device according to claim 1, characterized in that, The at least one through slot includes two through slots, one through slot for placing the elastic metal wire, and the other through slot forming the lead channel with the second elastic coating, the lead channel and the elastic metal wire being spaced apart from each other.

29. The sound-generating device according to claim 1, characterized in that, The number of the at least one through slot is one, and the elastic metal wire and the lead channel are together housed in the through slot.

30. The sound-generating device according to claim 1, characterized in that, The speaker assembly is fixedly connected to the other end of the elastic metal wire, and the speaker assembly includes a speaker housing and a speaker, wherein the speaker housing includes a receiving cavity with an opening, and the speaker is disposed in the receiving cavity.

31. The sound-generating device according to claim 30, characterized in that, The loudspeaker includes a magnet assembly, a magnetic shield, a coil, a diaphragm, an outer support, and an inner support. The magnetic shield includes a side portion and a bottom portion of the shield that are arranged in a cylindrical shape and enclosed in a cylindrical groove; The magnet assembly is disposed within the cylindrical groove and is fixedly connected to the magnetic conductive cover; The coil is fixed to the inner support and sleeved on the outer periphery of the magnet assembly; The outer bracket is fixed to the other end of the side by injection molding; The vibrating plate connects the outer support and the inner support, and is used to limit the relative movement of the outer support and the inner support in the radial direction along the cylindrical groove.

32. The sound-generating device according to claim 31, characterized in that, One end of the inner support is formed with a cover groove and is disposed on the magnet assembly, so that the magnet assembly partially extends into the cover groove; The outer support is cylindrical in shape, with one end fixed to one end of the side of the cover, and the other end connected to the other end of the inner support through the vibrating plate.

33. The sound-generating device according to claim 31, characterized in that, The outer support and the inner support are respectively provided with a first protrusion and a second protrusion. The vibrating plate is provided with a first through hole and a second through hole at intervals. The first protrusion is movably inserted through the first through hole, and the second protrusion is movably inserted through the second through hole, so as to restrict the relative movement of the outer support and the inner support along the radial direction of the cylindrical groove, while allowing the inner support and the vibrating plate to move relative to the outer support in the axial direction of the cylindrical groove.

34. The sound-generating device according to claim 33, characterized in that, The loudspeaker is a bone conduction loudspeaker, and the loudspeaker includes a vibration plate and an elastic damping sheet, wherein... The vibration plate is disposed at the other end of the inner support and abuts against the vibrating plate, so that the inner support and the vibrating plate can drive the vibration plate to vibrate; The outer edge of the elastic damping plate is fixedly connected to the speaker housing and disposed between the vibration transmission plate and the other end of the inner support to reduce the axial vibration of the inner support in the cylindrical groove.

35. The sound-generating device according to claim 34, characterized in that, The second protruding post includes a first column segment and a second column segment integrally connected. The first column segment passes through the second through hole, and the second column segment is inserted into the vibration transmission plate. The elastic damping sheet has a third through hole, and the elastic damping sheet is sleeved on the second column segment and supported on the first column segment through the third through hole.

36. The sound-generating device according to claim 1, characterized in that, The first elastic coating and the through groove are pre-formed by the first injection molding. The elastic metal wire is placed in the through groove after molding. The second elastic coating is formed on the side of the through groove of the first elastic coating by the second injection molding.

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