A headset

Abstract

The present application provides an earphone, which may include a movement module. The movement module may include a movement housing and a movement. The movement housing may include a bottom wall and an annular circumferential wall. When a user wears the earphone, the bottom wall may face the user's head, one end of the annular circumferential wall may be integrally connected to the bottom wall, and one end of the annular circumferential wall away from the bottom wall is open, and the movement may be arranged in the movement housing through the opening. The movement may include a magnet, and the magnet may be configured to allow the movement module to be adsorbed on a magnetic object through one side of the bottom wall.

Description

[0001] Cross-references

[0002] This application claims priority to Chinese patent application No. 202020720094.0 filed on April 30, 2020, priority to Chinese patent application No. 202020720106.X filed on April 30, 2020, and priority to Chinese patent application No. 202010367108.X filed on April 30, 2020, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application relates to the field of acoustics, and in particular to a headset. Background Art

[0004] With the advancement of acoustic output technology, acoustic output devices such as headphones have become widely used. Compared to traditional in-ear and over-ear headphones, open-ear headphones do not block or cover the ear canal, making them a portable audio output device that conducts sound within a specific range. Take bone conduction headphones, for example. Bone conduction is a method of sound transmission that converts electrical signals into mechanical vibrations and transmits these vibrations through the human skull, bony labyrinth, inner ear lymph, cerebral organ, auditory nerve, and auditory center in the cerebral cortex. Bone conduction headphones utilize bone conduction technology to receive sound, resting firmly against the skull. Sound waves are transmitted directly through the bones to the auditory nerve, bypassing the external auditory canal and eardrum, thus "liberating" the ears. Summary of the Invention

[0005] One of the embodiments of the present application provides an earphone, which may include a movement module. The movement module may include a movement housing and a movement. The movement housing may include a bottom wall and an annular circumferential wall. When a user wears the earphone, the bottom wall may face the user's head, one end of the annular circumferential wall may be integrally connected to the bottom wall, and one end of the annular circumferential wall away from the bottom wall is open, and the movement may be arranged in the movement housing through the opening. The movement may include a magnet, and the magnet may be configured to allow the movement module to be adsorbed on a magnetic object through one side of the bottom wall.

[0006] In some embodiments, the magnet may be a cylinder, a diameter of the magnet may be greater than or equal to a first diameter and less than or equal to a second diameter, and a thickness of the magnet may be greater than or equal to a first thickness and less than or equal to a second thickness.

[0007] In some embodiments, the diameter of the magnet may be 10.8 mm, and the thickness of the magnet may be 3.5 mm.

[0008] In some embodiments, the movement may further include a magnetically conductive cover, a magnetically conductive plate, and a coil. The magnetically conductive cover may include a base plate and an annular side plate integrally connected to the base plate, wherein the magnet is disposed within the annular side plate and fixed to the base plate. The magnetically conductive plate may be fixed to a side of the magnet facing away from the base plate. Furthermore, the coil may be disposed within a magnetic gap between the magnet and the annular side plate.

[0009] In some embodiments, the diameter of the magnetic conductive plate may be equal to the diameter of the magnet, and the thickness of the magnetic conductive plate may be equal to the thickness of the magnetic conductive cover.

[0010] In some embodiments, the thickness of the magnetic conductive cover may be greater than or equal to the third thickness and less than or equal to the fourth thickness.

[0011] In some embodiments, the thickness of the magnetic conductive cover may be 0.5 mm.

[0012] In some embodiments, the height of the annular side plate may be greater than or equal to the first height and less than or equal to the second height.

[0013] In some embodiments, the height of the annular side plate may be 3.7 mm.

[0014] In some embodiments, the movement module may further include a movement bracket. The movement bracket may be disposed in the movement housing, and the coil may be fixed on the movement bracket.

[0015] In some embodiments, the magnetic gap between the magnet and the annular side plate may be greater than or equal to a first gap and less than or equal to a second gap.

[0016] In some embodiments, the earphones may further include an ear hook assembly, and one end of the ear hook assembly may be connected to the core module.

[0017] In some embodiments, the ear hook assembly may include an ear hook shell. The ear hook shell may include a storage compartment, a fixing portion, and a bent transition portion. The storage compartment may be used to accommodate a battery or a main control circuit board. The fixing portion may be covered on the open end of the movement shell to form a cavity for accommodating the movement, and the bent transition portion may connect the storage compartment and the fixing portion and be bent to be hung on the outside of the human ear.

[0018] In some embodiments, the elastic modulus of the core shell may be greater than the elastic modulus of the ear hook shell.

[0019] In some embodiments, the fixing portion may be provided with a reinforcement structure, and the reinforcement structure may make the ratio of the difference between the stiffness of the bottom wall and the stiffness of the fixing portion and the stiffness of the bottom wall less than or equal to a preset ratio threshold.

[0020] In some embodiments, the reinforcement structure may include reinforcing ribs provided on the fixing portion.

[0021] In some embodiments, the reinforcement structure may include a metal part, wherein the reinforcement structure and the earphone fixing portion may be a metal insert injection-molded integrally formed structural part.

[0022] In some embodiments, the movement module may further include a cover plate, which may be disposed on the opening of the annular peripheral wall of the movement housing, and the fixing portion may be disposed on a side of the cover plate facing away from the movement housing.

[0023] In some embodiments, the elastic modulus of the cover plate may be greater than the elastic modulus of the ear hook shell.

[0024] In some embodiments, the elastic modulus of the cover plate may be less than or equal to the elastic modulus of the movement housing.

[0025] In some embodiments, the ear hook assembly may further include a decorative bracket. The bent transition portion may be provided with a first groove. The decorative bracket may be embedded in and secured within the first groove to form a wiring channel, thereby allowing wires to extend from the movement module through the wiring channel into the accommodating compartment.

[0026] In some embodiments, the earphone fixing portion may be provided with a button adapter hole, which may be connected to one end of the first groove. Furthermore, the earhook assembly may further include a button. The button may be disposed on the other side of the earhook housing away from the decorative bracket and exposed through the button adapter hole.

[0027] In some embodiments, the decorative bracket may extend in a cantilevered manner to above the button exposed through the button adapting hole, and may be capable of triggering the button when pressed by an external force.

[0028] In some embodiments, the number of the movement modules may be two. The polarities of the magnets of the two movement modules on the sides close to the bottom wall of the movement housing may be different, so that the two movement modules can be attracted to each other when the earphones are not worn.

[0029] In some embodiments, the number of the two ear hook components can be two. The headset can also include a rear hanging component for being wrapped around the back of the user's head. The two ends of the rear hanging component can be respectively connected to the two receiving compartments of the two ear hook components.

[0030] Additional features will be described in part in the following description and will become apparent to those skilled in the art by reviewing the following and accompanying drawings, or may be learned by the production or operation of the examples. The features of the present invention may be realized and obtained by practicing or using the various aspects of the methods, tools, and combinations described in the following detailed examples. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present application will be further described in the form of exemplary embodiments, which will be described in detail with reference to the accompanying drawings. These embodiments are not limiting, and in these embodiments, like numbers represent like structures, wherein:

[0032] Figure 1 is a schematic diagram of the exploded structure of a bone conduction headset according to some embodiments of the present application;

[0033] Figure 2 According to some embodiments of this application Figure 1 Schematic diagram of the exploded structure of the middle ear hook assembly;

[0034] Figure 3 According to some embodiments of this application Figure 2 Schematic diagram of the structure of the middle ear hook shell;

[0035] Figure 4 According to some embodiments of this application Figure 1 Another exploded structural diagram of the middle ear hook assembly;

[0036] Figure 5 According to some embodiments of this application Figure 4 Schematic diagram of the structure of the middle ear hook shell;

[0037] Figure 6 According to some embodiments of this application Figure 4 Schematic diagram of the structure of the middle decorative bracket close to the ear hook shell;

[0038] Figure 7 According to some embodiments of this application Figure 4 Schematic diagram of the trigger button of the middle decorative bracket;

[0039] Figure 8 According to some embodiments of this application Figure 1 Schematic diagram of the exploded structure of the middle movement module;

[0040] Figure 9 is a schematic diagram of a frequency response curve of a bone conduction headset according to some embodiments of the present application;

[0041] Figure 10 According to some embodiments of this application Figure 8 A schematic cross-sectional view of the reinforcement structure provided on the middle ear hook shell;

[0042] Figure 11 According to some embodiments of this application Figure 8 A schematic top view of the reinforcement structure provided on the middle ear hook shell;

[0043] Figure 12 According to some embodiments of this application Figure 10 and Figure 11 Schematic diagram of the frequency response curve corresponding to the reinforcement structure;

[0044] Figure 13 According to some embodiments of this application Figure 8 Schematic diagram of the cross-sectional structure along direction II after the middle movement module is assembled;

[0045] Figure 14 According to some embodiments of this application Figure 8 Schematic diagram of the structure of the middle movement bracket;

[0046] Figure 15 According to some embodiments of this application Figure 8 Schematic diagram of the top view of the central movement module after assembly;

[0047] Figure 16 According to some embodiments of this application Figure 1 Schematic diagram of the exploded structure of the middle movement module;

[0048] Figure 17 According to some embodiments of this application Figure 14 Schematic diagram of the frequency response curve of the structure corresponding to different types of colloids arranged between the middle ear hook component and the cover plate;

[0049] Figure 18 According to some embodiments of this application Figure 16 Schematic diagram of the cross-sectional structure along the II-II direction after the middle movement module is assembled;

[0050] Figure 19 According to some embodiments of this application Figure 16 Schematic diagram of the structure of the middle cover plate close to the movement housing;

[0051] Figure 20 According to some embodiments of this application Figure 19A schematic diagram of the top structure of the middle cover;

[0052] Figure 21 According to some embodiments of this application Figure 16 Schematic diagram of the exploded structure of the central movement module from another perspective;

[0053] Figure 22 According to some embodiments of this application Figure 21 A schematic diagram of the top structure of the middle cover;

[0054] Figure 23 is a schematic diagram of the principle of the movement shown in some embodiments of the present application;

[0055] Figure 24 According to some embodiments of this application Figure 23 Schematic diagram of the relationship between the magnet and the force coefficient BL;

[0056] Figure 25 According to some embodiments of this application Figure 23 Schematic diagram of the relationship between the thickness of the magnetic shield and the magnetic plate and the force coefficient BL;

[0057] Figure 26 According to some embodiments of this application Figure 23 Schematic diagram of the relationship between the height of the medium magnetic shield and the force coefficient BL;

[0058] Figure 27 According to some embodiments of this application Figure 1 Schematic diagram of the bone conduction earphones when not being worn;

[0059] Figure 28 According to some embodiments of this application Figure 1 A schematic diagram of the cross-sectional structure of the center rear suspension assembly along the III-III direction; and

[0060] Figure 29 This is an exemplary flow chart of a method for manufacturing a rear hanger assembly according to some embodiments of the present application. DETAILED DESCRIPTION

[0061] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some examples or embodiments of the present application. For those of ordinary skill in the art, the present application can also be applied to other similar scenarios based on these drawings without paying any creative work. It should be understood that these exemplary embodiments are provided only to enable those skilled in the relevant fields to better understand and implement the present invention, and are not intended to limit the scope of the present invention in any way. Unless otherwise apparent from the language context or otherwise explained, the same reference numerals in the figures represent the same structure or operation.

[0062] As used throughout this application and the claims, unless the context clearly indicates an exception, the terms "a," "an," "an," and / or "the" are not intended to refer to the singular but may include the plural, unless the context clearly indicates otherwise. Generally speaking, the terms "comprising" and "including" only indicate inclusion of the specifically identified steps and elements, and these steps and elements do not constitute an exclusive list; the method or apparatus may also include other steps or elements. The term "based on" means "based, at least in part, on." The term "one embodiment" means "at least one embodiment," and the term "another embodiment" means "at least one additional embodiment." Definitions of other terms are provided below. Without loss of generality, the following description of the conduction-related technology of the present invention will use the term "acoustic output device" or "headphone." This description is merely one form of conduction application. Those skilled in the art will readily recognize that "acoustic output device" or "headphone" can be replaced by other equivalent terms, such as "speaker," "sound-generating device," "hearing aid," or "sound-speaking device." Indeed, the various implementations of the present invention can be readily applied to other hearing devices other than speaker-based devices. For example, after understanding the basic principles of headphones, professionals in this field may, without departing from these principles, make various modifications and changes in form and detail to the specific methods and steps of implementing headphones. In particular, the headphones may be equipped with ambient sound pickup and processing functions to enable the headphones to function as hearing aids. For example, a microphone or other sound source can pick up sounds from the user / wearer's surroundings and, under a certain algorithm, transmit the processed sounds (or the generated electrical signals) to the acoustic output unit. That is, the headphones can be modified to include the function of picking up ambient sounds, and after certain signal processing, transmit the sounds to the user / wearer through the acoustic output module, thereby simultaneously achieving the functions of an acoustic output device and a traditional acoustic output device. By way of example, the algorithms mentioned here may include one or more combinations of noise cancellation, automatic gain control, acoustic feedback suppression, wide dynamic range compression, active environmental recognition, active anti-noise, directional processing, tinnitus processing, multi-channel wide dynamic range compression, active howling suppression, volume control, and the like.

[0063] The headphones in this application can be standalone, ready-to-use headphones, or headphones that are plugged into or used as part of an electronic device. For illustrative purposes only, the following description will be based on bone conduction headphones. It should be noted that the following description also applies to air conduction headphones.

[0064] Figure 1 This is a schematic diagram of the decomposed structure of the bone conduction headphones shown in some embodiments of the present application. Figure 2 According to some embodiments of this application Figure 1 Schematic diagram of the exploded structure of the middle ear hook assembly. Figure 3 According to some embodiments of this application Figure 2 Schematic diagram of the structure of the middle ear hook shell. Figure 4 According to some embodiments of this application Figure 1 Another exploded diagram of the middle ear hook assembly. Figure 5 According to some embodiments of this application Figure 4 Schematic diagram of the structure of the middle ear hook shell. Figures 1 to 5 As shown, the bone conduction earphones 10 may include two core modules 20, two earhook assemblies 30, a rear-hook assembly 40, a main control circuit board 50, and a battery 60. One end of each earhook assembly 30 is connected to the corresponding core module 20, while both ends of the rear-hook assembly 40 are connected to the other ends of the two earhook assemblies 30, away from the core module 20. Furthermore, the two earhook assemblies 30 are designed to be mounted on the outsides of the user's ears, and the rear-hook assembly 40 is designed to be mounted around the back of the user's head, so that the user can wear the bone conduction earphones 10. This arrangement allows the two core modules 20 to be located on the left and right sides of the user's head, respectively, when the bone conduction earphones 10 are worn. The two earhook assemblies 30 and the rear-hook assembly 40 work together to clamp the user's head and contact the user's skin, thereby enabling sound transmission based on bone conduction technology.

[0065] It should be noted that the movement modules 20 described in the present application are provided with two, and both movement modules 20 can produce sound, so that the bone conduction earphones 10 can achieve stereo sound effects, thereby improving the user's favorability of the bone conduction earphones 10. In some embodiments, the number of movement modules 20 may not be limited to two. For example, the bone conduction earphones 10 may be provided with three or more movement modules 20. For another example, in some application scenarios where stereo requirements are not particularly high, such as hearing aids for hearing patients, live broadcast prompts for hosts, etc., the bone conduction earphones 10 may also be provided with only one movement module 20. For another example, the earphones may also include an air conduction earphone (for example, a monaural air conduction earphone) provided with a movement module 20, and the air conduction earphones may be hung on the user's auricle through a fixing component (for example, an ear hook component) and transmit sound signals to the user through one or more sound guide holes.

[0066] In some embodiments, the main control circuit board 50 and the battery 60 can be arranged in the same ear hook component 30, or can be arranged in two ear hook components 30 respectively. The specific structure will be described in detail later. Figures 1 to 5 The main control circuit board 50 (not shown) is connected to the two movement modules 20. The main control circuit board 50 can be used to control the sound generation of the movement modules 20 (for example, converting electrical signals into mechanical vibrations). The battery 60 can be used to provide power to the bone conduction earphones 10 (specifically, the two movement modules 20). In some embodiments, the bone conduction earphones 10 described herein may also include components such as a microphone (e.g., a microphone, a pickup, etc.) and a communication element (e.g., Bluetooth). These components can also be connected to the main control circuit board 50, battery 60, etc. via wires to achieve their corresponding functions.

[0067] In some embodiments, the conductor may include a wire, which can be used to achieve electrical connection between various electronic components of the bone conduction headset 10; if there are multiple circuits that need to be electrically connected, the conductor can be set to multiple strands accordingly, and the above-mentioned conductor can be simply understood as a multi-strand wire.

[0068] like Figure 2As shown, the earhook assembly 30 may include an earhook housing 31 and a decorative member 32, which may be connected by one or a combination of assembly methods such as gluing, snap-fitting, and threading. When the bone conduction earphone 10 is worn, the decorative member 32 is located on the side of the earhook housing 31 facing away from the movement module 20, that is, on the outside of the bone conduction earphone 10. This allows the decorative member 32 to decorate the earhook housing 31, thereby enhancing the aesthetic appearance of the bone conduction earphone 10. In some embodiments, the decorative member 32 may protrude from the earhook housing 31 or be embedded in the earhook housing 31. In some embodiments, the decorative member 32 may include a sticker, plastic, or metal part, and may be printed with geometric patterns, cartoon patterns, logo patterns, or coated with fluorescent materials or reflective materials to achieve a corresponding decorative effect.

[0069] like Figure 2 and Figure 3 As shown, the ear hook shell 31 may include an earphone fixing portion 311, a bent transition portion 312 and a storage compartment 313 connected in sequence. The earphone fixing portion 311 is used to fix the movement module 20, and the cooperation relationship between the two will be described in detail later. The bent transition portion 312 connects the storage compartment 313 and the earphone fixing portion 311, and is arranged in a bent shape to be hung on the outside of the human ear. In some embodiments, the end of the storage compartment 313 away from the earphone fixing portion 311 can be connected to the back hanging component 40 by one or a combination of assembly methods such as gluing, snap connection, and threaded connection, so as to facilitate the assembly between the ear hook component 30 and the back hanging component 40. One end of the storage compartment 313 is open to accommodate the main control circuit board 50 or the battery 60. At this time, the ear hook shell 31 may also include a compartment cover 314, which is covered on the open end of the storage compartment 313.

[0070] In some embodiments, the bone conduction earphone 10 may further include a key module, an interface module, etc. For example, when the storage compartment 313 is used to accommodate the main control circuit board 50, as shown in FIG. Figure 2As shown, the ear hook assembly 30 may further include a control key 33 and a TYPE-C (USB) interface 34. The control key 33 and the TYPE-C (USB) interface 34 may be arranged on the storage compartment 313 so that both can be connected to the main control circuit board 50, thereby shortening the wiring distance. At this time, the control key 33 and the TYPE-C (USB) interface 34 may be partially exposed outside the ear hook shell 31 to facilitate the user to perform corresponding operations. In this way, the control key 33 can be used to realize the functions of turning the bone conduction earphones 10 on and off, adjusting the volume, etc., and the TYPE-C (USB) interface 34 can be used to realize functions such as data transmission and charging. In addition, the ear hook assembly 30 may further include an indicator light 35. The indicator light 35 may be arranged on the storage compartment 313 so that the main control circuit board 50 can be connected to shorten the wiring distance. In some embodiments, as Figure 2 As shown, the indicator light 35 can be partially exposed outside the ear hook shell 31, or can specifically include an LED light source hidden in the ear hook shell 31 and a light guide part ( Figure 2 and Figure 3 With this configuration, the indicator light 35 can provide prompts when the bone conduction headset 10 is charging or low on power.

[0071] In some embodiments, when the bone conduction earphones 10 are in the wearing state, the bone conduction earphones 10 will be hung on the outside of the human ear. Specifically, the movement module 20 is generally located on the front side of the human ear, and the main control circuit board 50 or the battery 60 is generally located on the back side of the human ear. At this time, the human ear acts as a fulcrum to support the bone conduction earphones 10, causing the human ear to bear most of the weight of the bone conduction earphones 10. After wearing the bone conduction earphones 10 for a long time, the user may feel uncomfortable. For this reason, the ear hook shell 31 (especially the bent transition portion 312) is generally made of a softer material to improve the wearing comfort of the bone conduction earphones 10. In some embodiments, the material of the ear hook shell 31 may include 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., or any combination thereof. In some embodiments, due to the soft texture of the ear hook shell 31, the ear hook shell 31 may have insufficient rigidity and difficulty maintaining its structure under external force, or even the risk of breaking due to insufficient strength. To this end, the ear hook housing 31 may have an elastic metal wire (at least in the bending transition portion 312) built in. Figure 3 (not shown) to improve the strength of the ear hook shell 31 and thereby increase the reliability of the ear hook shell 31. The elastic metal wire may be made of spring steel, titanium alloy, titanium-nickel alloy, chromium-molybdenum steel, or any combination thereof. In some embodiments, the ear hook shell 31 may be a metal insert injection-molded integrally formed structural component.

[0072] Based on the above detailed description, since the movement module 20 is arranged at one end of the ear hook assembly 30 (specifically, it can be the end where the earphone fixing part 311 is located), and the main control circuit board 50 or the battery 60 is arranged at the other end of the ear hook assembly 30 (specifically, it can be the other end where the accommodating compartment 313 is located), when the movement module 20 is connected to the main control circuit board 50 and the battery 60 through a wire, the wire must at least pass through the area where the bending transition part 312 is located. Generally, for the aesthetic appearance of the bone conduction earphone 10, the wire will not be exposed outside the ear hook shell 31, but will be passed through the ear hook shell 31, so that at least the bending transition part 312 covers the wire. However, since the texture of the wire is generally softer, it is more difficult to pass the wire through the ear hook shell 31. For this reason, in some embodiments, such as Figures 2 to 5 As shown, the ear hook housing 31 is provided with a first groove 315 at least on the bending transition portion 312. The first groove 315 can be used for wiring to reduce the difficulty of threading the wires in the ear hook housing 31. Specifically, the first groove 315 can be provided on the side of the ear hook housing 31 close to the decorative bracket 321. At this time, the decorative element 32 can be embedded and fixed in the first groove 315 corresponding to the bending transition portion 312 to form a wiring channel ( Figure 2 and Figure 4 (not marked in the figure), thereby allowing the wires to extend from the movement module 20 through the wiring channel into the accommodating compartment 313, making it easier for the wires to connect the movement module 20 with the main control circuit board 50 and the battery 60. In this way, when the wires are passed through the first groove 315 and are arranged in the earhook shell 31, the decorative piece 32 can cover the wires to prevent the wires from being exposed outside the earhook shell 31. At this time, the decorative piece 32 can not only decorate the earhook shell 31, but also shield the wires, so that the decorative piece 32 can achieve "two uses in one piece".

[0073] like Figure 2 As shown, the decorative element 32 may include a decorative bracket 321 and a decorative strip 322. The decorative bracket 321 is bent in a corresponding manner to the curved transition portion 312. When the decorative bracket 321 is inserted into and secured to the first groove 315 corresponding to the curved transition portion 312, the decorative bracket 321 and the first groove 315 on the curved transition portion 312 cooperate to form a wiring channel, allowing wires to extend from the movement module 20 through the wiring channel to the accommodating compartment 313. Furthermore, the decorative strip 322 is inserted into the first groove 315 and securely attached to the decorative bracket 321. The decorative bracket 321 may be made of plastic and may be assembled to the earhook housing 31 via gluing and / or snapping. The decorative strip 322 may be a sticker and may be glued to the decorative bracket 321. With this arrangement, when a user desires to change the decorative effect of the decorative element 32, they can simply replace the decorative strip 322 without having to remove the entire decorative element 32 from the earhook housing 31. Figure 6According to some embodiments of this application Figure 4 A schematic diagram of the structure of the middle decorative bracket 321 close to the ear hook housing 31. In some embodiments, as Figure 6 As shown, the decorative bracket 321 may further be provided with a second groove 3211 on the side facing the ear hook shell 31, so that when the decorative bracket 321 is embedded in 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.

[0074] In some embodiments, a recess 316 may be provided at the bottom of the first groove 315 near the end of the decorative strip 322. This allows the user to press the decorative strip 322 into the recess 316, causing the end of the decorative strip 322 to lift out of the first groove 315, facilitating replacement of the decorative strip 322. In this case, the first groove 315 may further extend into the accommodating compartment 313, and the recess 316 may be provided on the accommodating compartment 313. The recess 316 is located outside the area covered by the decorative bracket 321 that covers the first groove 315. The decorative strip 322 is secured to the decorative bracket 321 and covers 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.

[0075] In some embodiments, the decorative bracket 321 and the decorative strip 322 can also be integrally molded. The decorative bracket 321 and the decorative strip 322 can be made of different materials and can be two-shot injection molded, allowing the decorative bracket 321 to provide support and the decorative strip 322 to provide decoration. 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.

[0076] like Figure 3As shown, the first groove 315 can be divided into a first sub-groove section 3151 located on the bent transition portion 312, a second sub-groove section 3152 located on the earphone fixing portion 311, and a third sub-groove section 3153 located on the accommodating compartment 313. The depth of the first sub-groove section 3151 is greater than the depths of the second and third sub-groove sections 3152, 3153. This allows the first sub-groove section 3151 to accommodate the decorative bracket 321 and facilitate wiring, while the second and third sub-groove sections 3152, 3153 can accommodate the decorative strip 322. In other words, in addition to being located within the first sub-groove section 3151, the decorative strip 322 can also extend further into the second and third sub-groove sections 3152, 3153. In this case, the recess 316 can be located in the third sub-groove section 3153. Furthermore, the depth of the second sub-groove section 3152 can be equal to the depth of the third sub-groove section 3153, and after the decorative bracket 321 is embedded in and fixed in the first sub-groove section 3151, the side of the decorative bracket 321 facing away from the ear hook shell 31 can be roughly flush with the bottom of the second sub-groove section 3152 and the third sub-groove section 3153, so that the decorative strip 322 can be flatly attached to the earphone fixing part 311, the decorative bracket 321 and the accommodating compartment 313.

[0077] In some embodiments, the fitting 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 bent transition portion 312. Specifically, when the decorative strip 322 is glued to the decorative bracket 321, the fitting strength may refer to the bonding strength between the two. At this time, the magnitude of the fitting strength may depend on the roughness of the surface on which the decorative bracket 321 and the decorative strip 322 are bonded; and / or the amount (and / or viscosity) of the colloid between the decorative strip 322 and the decorative bracket 321. In some embodiments, when the decorative bracket 321 is clamped to the bent transition portion 312, the fixing strength may refer to the clamping strength between the two. At this time, the fixing strength may depend on the fitting clearance between the decorative bracket 321 and the bent transition portion 312; and / or the depth of the clamping between the two. In this way, when the decorative bracket 321 and the ear hook shell 31 are assembled in a snap-fit manner, the two ends of the decorative strip 322 can be glued to the accommodating 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 strength of the fit between it and the decorative strip 322.

[0078] In some embodiments, when Figure 2 When the housing compartment 313 is used to accommodate the main control circuit board 50, Figure 4 The storage compartment 313 shown can be used to accommodate the battery 60. Figure 2 The ear hook assembly 30 shown corresponds to the left ear hook of the bone conduction earphone 10. Figure 4 The ear hook assembly 30 shown can correspond to the right ear hook of the bone conduction headset 10; Figure 2 The ear hook assembly 30 shown corresponds to the right ear hook of the bone conduction earphone 10. Figure 4 The ear hook assembly 30 shown can correspond to the left ear hook of the bone conduction headset 10. In other words, the main control circuit board 50 and the battery 60 can be respectively arranged in the two ear hook assemblies 30. Such an arrangement can not only increase the capacity of the battery 60 to improve the endurance of the bone conduction headset 10, but also balance the weight of the bone conduction headset 10 to improve the wearing comfort of the bone conduction headset 10. In this case, the main control circuit board 50 and the battery 60 can be connected via a wire built into the rear hanging assembly 40. The specific structure will be described in detail later. In some embodiments, the left ear hook (or right ear hook) and / or the rear hanging assembly 40 can be omitted, and the bone conduction headset 10 can be provided with a single ear hook, and the ear hook's storage compartment 313 can accommodate both the main control circuit board 50 and the battery 60.

[0079] like Figure 4 As shown, the earhook assembly 30 may also include a button 36, and the earhook housing 31 is further provided with a button adapting hole 317. A decorative bracket 321 is assembled and fixed to one side of the earhook housing 31, and the button 36 is provided on the other side of the earhook housing 31 away from the decorative bracket 321 and is exposed through the button adapting hole 317. The decorative bracket 321 further extends in a cantilevered manner to the top of the button 36 exposed through the button adapting hole 317, and can be triggered by external force. With this arrangement, the button 36 can replace the aforementioned control button 33 to simplify the structure of the bone conduction earphone 10; it can also coexist with the aforementioned control button 33 and can be used to implement functions such as play / pause and AI wake-up to expand the interactive capabilities of the bone conduction earphone 10.

[0080] In some embodiments, the button adapter hole 317 can be provided in the headphone fixing portion 311, allowing the user to press the button 36 on the headphone fixing portion 311. In this case, the earhook assembly 30 can further include a seal 37 disposed between the button 36 and the headphone fixing portion 311. The seal 37 can be made of silicone, rubber, or other materials. This configuration can enhance the waterproof performance of the headphone fixing portion 311 in the area where the button 36 is located and improve the tactile feel of the button 36.

[0081] Similarly, when the core module 20 is arranged at one end of the ear hook assembly 30 (specifically, the end where the earphone fixing portion 311 is located) and the battery 60 is arranged at the other end of the ear hook assembly 30 (specifically, the other end where the accommodating compartment 313 is located), the wire must at least pass through the area where the bending transition portion 312 is located, so that the core module 20 is connected to the battery 60 through the wire. Figure 4As shown, the earhook housing 31 has a first groove 315 formed at least on one side of the earphone fixing portion 311 and the bent transition portion 312 near the decorative bracket 321. The first groove 315 can be used for wiring, thereby reducing the difficulty of threading the wires within the earhook housing 31. Furthermore, one end of the first groove 315 is connected to the button adapter hole 317. When the decorative bracket 321 is inserted into and fixed in the first groove 315, the decorative bracket 321 can also cover the button adapter hole 317, thereby facilitating the activation of the button 36.

[0082] In the above manner, the decorative piece 32 can not only decorate the ear hook shell 31 and shield the wires, but also shield and trigger the button 36, so that the decorative piece 32 can achieve "one piece, four uses".

[0083] like Figure 5 As shown, the first groove 315 can be divided into a first sub-groove section 3151 located on the curved transition portion 312 and a second sub-groove section 3152 located on the earphone fixing portion 311. The depth of the first sub-groove section 3151 is greater than that of the second sub-groove section 3152, allowing the first sub-groove section 3151 to be used for wiring. The second sub-groove section 3152 and the first sub-groove section 3151 are used together to accommodate the decorative bracket 321. In this case, the button adapter hole 317 can be located in the second sub-groove section 3152, meaning that their projections on the earphone fixing portion 311 at least partially overlap. Furthermore, the first groove 315 can be divided into a third sub-groove section 3153 located on the accommodating compartment 313. The third sub-groove section 3153 can also be provided with a recess 316. The depth of the second sub-groove section 3152 can be greater than that of the third sub-groove section 3153, allowing the third sub-groove section 3153 to accommodate the decorative strip 322. In other words, in addition to being located within the first and second sub-slot sections 3151 and 3152, the decorative strip 322 can also extend further into the third sub-slot section 3153. In this case, after the decorative bracket 321 is embedded in and secured to the first sub-slot section 3151, the side of the decorative bracket 321 facing away from the earhook housing 31 can be substantially flush with the bottom of the third sub-slot section 3153. This allows the decorative strip 322 to lie flat against the earphone fixing portion 311, the decorative bracket 321, and the accommodating compartment 313, and the decorative bracket 321 can form a cantilever at the position of the second sub-slot section 3152 corresponding to the button adapter hole 317.

[0084] like Figure 6As shown, 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 fixing portion 3212 is thicker than the pressing portion 3213, allowing the fixing portion 3212 to be used for assembling the decorative bracket 321 with the earhook housing 31, while the pressing portion 3213 can be used to trigger the button 36. Furthermore, if the decorative bracket 321 has a second groove 3211 on the side facing the earhook housing 31, the second groove 3211 can be provided on the fixing portion 3212.

[0085] Figure 7 According to some embodiments of this application Figure 4 Schematic diagram of the principle of the middle decorative bracket 321 triggering the button 36. Figure 6 and Figure 7 As shown, the decorative bracket 321 may further include a connecting portion 3214 connected between the fixing portion 3212 and the pressing portion 3213. The connecting portion 3214 bends and extends to a side away from the ear hook shell 31 compared to the fixing portion 3212, and the pressing portion 3213 bends and extends to a side close to the ear hook shell 31 compared to the connecting portion 3214. At this time, the connecting portion 3214 makes the pressing portion 3213 suspended relative to the fixing portion 3212, and there is a certain distance between the pressing portion 3213 and the fixing portion 3212. The distance may be greater than or equal to the trigger stroke of the button 36. This arrangement can effectively improve the problem that when the user presses one end of the decorative bracket 321 (specifically, the end where the pressing portion 3213 is located), the other end of the decorative bracket 321 is tilted.

[0086] In some embodiments, a button protrusion 3215 may be provided on the side of the pressing portion 3213 near the earhook housing 31. This allows the button protrusion 3215 to trigger the button 36 when the pressing portion 3213 is pressed by an external force. The projections of the button protrusion 3215 and the button 36 on the earphone mounting portion 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 portion 3213 and the button 36. This configuration reduces the difficulty of triggering the button 36, especially when a seal 37 is positioned between the button 36 and the earphone mounting portion 311, as triggering the button 36 requires deformation of the seal 37. Based on the relationship F∝ε·S, for 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, making it easier to trigger the button 36. Clearly, compared to the pressing portion 3213, the button protrusion 3215 can reduce this effective area.

[0087] In some embodiments, the decorative bracket 321 may further be provided with a stopper 3216 at the end thereof close to the earphone fixing portion 311. The stopper 3216 is used to form a stopper with the inner surface of the earphone fixing portion 311 away from the decorative bracket 321 to prevent the end of the decorative bracket 321 from tilting from the first groove 315, especially under the action of external force. Figure 7 As shown, the stopper 3216 can be specifically provided at an end of the pressing portion 3213 away from the fixing portion 3212. At this time, due to the stopping effect between the stopper 3216 and the earphone fixing portion 311, after the decorative bracket 321 is deformed by external pressure and the button 36 is triggered, the decorative bracket 321 will not be tilted due to excessive elastic recovery.

[0088] See Figure 2 or Figure 6 The decorative bracket 321 may also be provided with an overlapping portion 3217 at one end thereof closer to the accommodating compartment 313 (i.e., the other end thereof away from the pressing portion 3213). The overlapping portion 3217 is thinner than the fixing portion 3212 to provide structural clearance with the reinforcement structure of the ear hook housing 31 (specifically, located between the bent transition portion 312 and the accommodating compartment 313).

[0089] Figure 8 According to some embodiments of this application Figure 1 Schematic diagram of the exploded structure of the core module 20. Figure 8 As shown, the movement module 20 may include a movement shell 21 and a movement 22. Among them, one end of the movement shell 21 is open, and the ear hook shell 31 (specifically, it can be the earphone fixing part 311) is covered on the open end of the movement shell 21 to form a cavity structure for accommodating the movement 22. At this time, the ear hook shell 31 is equivalent to a cover of the movement shell 21. With such a setting, compared with the plug-in assembly method of the ear hook structure and the movement structure in the related art, the cover assembly method of the ear hook shell 31 and the movement shell 21 in the embodiment of the present application can improve the stress problem at the plug-in point between the ear hook structure and the movement structure in the related art, thereby increasing the reliability of the bone conduction earphone 10.

[0090] It should be noted that Figure 8 The ear hook shell shown in the figure is for the purpose of describing the relative positional relationship between the ear hook shell and the movement shell, and further implicitly illustrates a possible assembly method between the ear hook shell and the movement shell.

[0091] In some embodiments, the movement 22 can be directly or indirectly fixed within the movement housing 21, so that the movement 22 vibrates under the stimulation of an electrical signal, driving the movement housing 21 to vibrate accordingly. In some embodiments, when a user wears the bone conduction earphones 10, the skin contact area of the movement housing 21 (i.e., the bottom wall 211 described below) can contact the user's skin, allowing the aforementioned vibrations to be transmitted through the human skull to the auditory nerve, thereby allowing the user to hear the sound played by the bone conduction earphones 10. In some embodiments, when the user wears the earphones, one side of the movement housing 21 (e.g., the bottom wall 211 described below) can face the user's head. For example, the earphones further include air conduction earphones. One side of the air conduction earphones can be provided with one or more sound conduction holes. When the user wears the air conduction earphones, the side provided with the one or more sound conduction holes can face the user's ear canal. The sound signals generated by the earphones can be transmitted to the user via air conduction. Alternatively or additionally, the one or more sound conduction holes can be provided on different sidewalls of the earphones to achieve different sound transmission effects. For example, a first sound guide hole can be provided on the bottom wall of the earphone facing the user's head, and the first sound guide hole can be used to transmit a first sound signal to the user's ear canal. A second sound guide hole can be provided on a side wall other than the bottom wall, and the second sound guide hole can be used to transmit a second sound signal. The second sound signal can be superimposed on the sound leakage sound waves generated by the vibration of the movement housing 21, thereby achieving the effect of reducing the sound leakage of the movement housing 21. In some embodiments, the movement module 20 may further include a movement bracket 23, which is used to fix the movement 22 in the movement housing 21.

[0092] Generally speaking, low frequency refers to sounds with a frequency less than 500Hz, medium frequency refers to sounds with a frequency range of 500-4000Hz, and high frequency refers to sounds with a frequency greater than 4000Hz. Figure 9 Schematic diagram of the frequency response curve of bone conduction headphones according to some embodiments of the present application. Figure 9As shown, the horizontal axis is the frequency of vibration (in Hz), and the vertical axis is the intensity of vibration (in dB); the high-frequency region (the frequency range greater than 4000 Hz) has a first high-frequency valley V, a first high-frequency peak P1, and a second high-frequency peak P2. The first high-frequency valley V and the first high-frequency peak P1 can be caused by the deformation of the non-skin contact area of the movement housing 21 (that is, the annular circumferential wall 212 described later) at high frequencies, and the second high-frequency peak P2 can be caused by the deformation of the skin contact area of the movement housing 21 at high frequencies. In some embodiments, the frequency response curve in the frequency range of 500-6000 Hz is particularly critical for bone conduction headphones. Within this frequency range, sharp peaks and valleys are undesirable; the flatter the frequency response curve, the better the sound quality of the bone conduction headphones. Generally speaking, the greater the stiffness of a structure (for example, the movement housing 21), the smaller the deformation produced when the structure is subjected to force, which is also conducive to generating higher-frequency resonance. Therefore, in most cases, product manufacturers increase the rigidity of the movement housing 21 to shift the first high-frequency valley V, the first high-frequency peak P1, and the second high-frequency peak P2 toward higher frequencies. In other words, to achieve better sound quality, the rigidity of the movement housing 21 should be as high as possible. To this end, in some embodiments, the movement housing 21 can be made of a mixture of materials such as polycarbonate, polyamide, or acrylonitrile-butadiene-styrene copolymer with glass fiber or carbon fiber. In some embodiments, the movement housing 21 can be made of a mixture of carbon fiber and polycarbonate in a certain ratio, a mixture of glass fiber and polycarbonate in a certain ratio, or a mixture of glass fiber and polyamide in a certain ratio. In other embodiments, the movement housing 21 can be made of a mixture of carbon fiber, glass fiber, and polycarbonate in a certain ratio. Adding different proportions of carbon fiber and / or glass fiber results in different elastic moduli and, consequently, different rigidities in the resulting movement housing 21. For example, adding 20%-50% glass fiber to polycarbonate can achieve an elastic modulus of 6-8 GPa.

[0093] Based on the detailed description above, on the one hand, the earhook housing 31 (especially the earphone fixing portion 311) is part of the structure of the movement module 20 to form a cavity structure for accommodating the movement 22. On the other hand, in the embodiment of the present application, in order to improve the wearing comfort of the bone conduction earphone 10, the earhook housing 31 is generally made of a softer material, resulting in a lower rigidity of the earhook housing 31. With this arrangement, when the earhook housing 31 is placed over the movement housing 21 to form a cavity structure for accommodating the movement 22, because the rigidity of the earhook housing 31 (especially the earphone fixing portion 311) is less than that of the movement housing 21, the bone conduction earphone is prone to undesirable sound leakage, which in turn affects the user's preference.

[0094] Generally speaking, the resonant frequency of a structure is related to the stiffness of the structure, and under the same mass, the greater the stiffness of the structure, the higher its resonant frequency. Among them, the stiffness K of the structure is related to factors such as its material (specifically expressed as elastic modulus) and specific structural form. Generally speaking, the greater the elastic modulus E of the material, the greater the stiffness K of the structure; the greater the thickness t of the structure, the greater the stiffness K of the structure; the smaller the area S of the structure, the greater the stiffness K of the structure. At this time, the above relationship can be simply described by the relationship K∝(E·t) / S. Therefore, increasing the elastic modulus E of the material, increasing the thickness t of the structure, reducing the area S of the structure, or any combination thereof can increase the stiffness K of the structure, thereby increasing the resonant frequency of the structure.

[0095] In some embodiments, the ear hook shell 31 is generally made of a softer material (that is, a material with a smaller elastic modulus, such as polycarbonate, polyamide, etc., whose elastic modulus is mostly 2-3GPa), while the core shell 21 is generally made of a harder material (that is, a material with a larger elastic modulus, such as adding 20%-50% glass fiber to polycarbonate, the elastic modulus of the material can reach 6-8GPa, etc.). Obviously, due to the difference in elastic modulus, the stiffness of the ear hook shell 31 is inconsistent with the stiffness of the core shell 21, which makes it easy for the above-mentioned sound leakage to occur. In addition, after the ear hook shell 31 is connected to the core shell 21, due to the inconsistent stiffness of the two, it is easy for the structure to resonate at a relatively low frequency. To this end, in some embodiments, when the elastic modulus of the movement shell 21 is greater than the elastic modulus of the ear hook shell 31, the earphone fixing portion 311 is provided with a reinforcement structure 318, which can make the ratio of the difference between the stiffness K1 of the skin contact area of the movement shell 21 and the stiffness K2 of the earphone fixing portion 311 to the stiffness K1 of the skin contact area of the movement shell 21 less than or equal to a first preset ratio threshold. In some embodiments, the first preset ratio threshold can be 10%. That is, (K1-K2) / K1≤10%, or K2 / K1≥90%. Such a setting can ensure that the movement shell 21 has a sufficiently large stiffness so that its resonant frequency is in the highest possible high frequency zone, and can also reduce the stiffness difference between the earphone fixing portion 311 and the movement shell 21 to increase the resonant frequency of the structure and improve the above-mentioned sound leakage.

[0096] Figure 10 According to some embodiments of this application Figure 8 Schematic diagram of the cross-sectional structure of the reinforcement structure provided on the middle ear hook shell. Figure 10As shown, the movement housing 21 may include a bottom wall 211 and an annular circumferential wall 212. The bottom wall 211 is the skin contact area of the movement housing 21, and one end of the annular circumferential wall 212 is integrally connected to the bottom wall 211. In other words, the bottom wall 211 is used to contact the user's skin or face the user's head (for example, facing the user's ear canal). In some embodiments, the earphone fixing portion 311 may include a fixed body 3111 connected to the bent transition portion 312 and an annular flange 3112 integrally connected to the fixed body 3111 and extending toward the movement housing 21. The annular flange 3112 and the other end of the annular circumferential wall 212 away from the bottom wall 211 are docked with each other, and the two can be connected by gluing or a combination of gluing and snapping.

[0097] It should be noted that, in the embodiment of the present application, the bottom wall 211 can be rectangular, square, circular, elliptical, or quasi-elliptical (similar to the shape of FIG. Figure 11 In some embodiments, the annular circumferential wall 212 may be perpendicular to the bottom wall 211, that is, the area of the open end of the movement housing 21 is equal to the area of the bottom wall 211. In some embodiments, the annular circumferential wall 212 may also be inclined outwardly at an angle relative to the bottom wall 211 (for example, the inclination angle is less than or equal to 30°), that is, the area of the open end of the movement housing 21 is greater than the area of the bottom wall 211. In this embodiment, the bottom wall 211 is elliptical and the annular circumferential wall 212 is inclined outwardly by 10° relative to the bottom wall 211 as an example for illustrative description. With such an arrangement, under the premise of ensuring a certain degree of wearing comfort (because the bottom wall 211, as the skin contact area of the movement housing 21, will contact 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.

[0098] like Figure 10 As shown in (a), the reinforcement structure 318 can be an arc-shaped structure arranged between the fixed body 3111 and the annular flange 3112, that is, a chamfering (Fillet) treatment is performed. In some embodiments, 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 above-mentioned arc-shaped structure can be integrated. At this time, for the earphone fixing part 311, its structure can only include the fixed body 3111 and the arc-shaped reinforcement structure 318. In this way, the above-mentioned arc-shaped structure reduces the effective area of the earphone fixing part 311, 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 movement shell 21. It should be noted that the size of the above-mentioned arc-shaped structure can be reasonably designed according to the rigidity requirements of the earphone fixing part 311, and is not limited here.

[0099] like Figure 10As shown in (b), the reinforcement structure 318 can be a thickening layer integrally provided with the fixed body 3111, that is, a thickening treatment is performed. The material of the thickening layer can be the same as the material of the ear hook shell 31, for example, the material of the thickening layer is also any one of polycarbonate, polyamide, and acrylonitrile-butadiene-styrene copolymer. It should be noted that the reinforcement structure 318 can be located on the side of the fixed body 3111 close to the movement shell 21, or on the other side of the fixed body 3111 away from the movement shell 21, and of course it can also be located on both sides of the fixed body 3111. In some embodiments, 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 above-mentioned thickening layer can be integrated. At this time, for the earphone fixing part 311, its structure can only include the fixed body 3111 and the reinforcement structure 318 provided with the thickening layer. In this manner, the thickened layer increases the effective thickness of the earphone mounting portion 311, thereby increasing the rigidity of the earphone mounting portion 311 and thereby reducing the rigidity difference between the earphone mounting portion 311 and the movement housing 21. It should be noted that the size of the thickened layer can be appropriately designed based on the rigidity requirements of the earphone mounting portion 311 and is not limited herein.

[0100] In some embodiments, the reinforcement structure 318 can be a metal part. The material of the metal part can include aluminum alloy, magnesium alloy, titanium alloy, nickel alloy, chromium-molybdenum steel, stainless steel, etc., or any combination thereof. At this time, the reinforcement structure 318 and the earphone fixing part 311 can be a metal insert injection-molded integrally formed structural part. With such a configuration, the metal part can effectively increase the stiffness of the earphone fixing part 311, thereby reducing the stiffness difference between the earphone fixing part 311 and the movement shell 21. It should be noted that the material, size and other parameters of the above-mentioned reinforcement structure 318 can be reasonably designed according to the stiffness requirements of the earphone fixing part 311, and are not limited here.

[0101] Figure 11 According to some embodiments of this application Figure 8 A schematic diagram of a top view of the reinforcement structure 318 provided on the middle ear hook housing 31. In some embodiments, as Figure 11 As shown, the reinforcement structure 318 can be a reinforcement rib provided on the earphone fixing portion 311. The reinforcement rib can be distributed on the side of the earphone fixing portion 311 close to the core housing 21. In some embodiments, the number of reinforcement ribs can be multiple. In some embodiments, the multiple reinforcement ribs can be arranged as follows: Figure 11 The side-by-side arrangement shown in (a) and (b) or as shown in Figure 11 In some embodiments, the plurality of reinforcing ribs may also be arranged in a grid pattern with a preset reference point on the earphone fixing portion 311 as the center. Figure 11The radial arrangement shown in (d) in FIG. 1 is a diagram illustrating a radial arrangement. 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. Compared with methods such as injection molding a metal part on the earphone fixing portion 311 or directly thickening the earphone fixing portion 311, providing reinforcing ribs on the earphone fixing portion 311 can increase the rigidity of the earphone fixing portion 311 while taking into account the weight of the earphone fixing portion 311.

[0102] In some embodiments, as Figure 11 As shown, the earphone fixing portion 311 may have a long axis direction (such as Figure 11 The direction indicated by the dotted line X) and a short axis direction (as shown in FIG. Figure 11 The size of the earphone fixing portion 311 along the long axis direction may be greater than the size along the short axis direction. The following is an exemplary description of the distribution of the reinforcing ribs:

[0103] like Figure 11 As shown in (a), multiple reinforcing ribs can be arranged in strips along the long axis and arranged side by side along the short axis. In this case, the reinforcement structure 318 can be simply regarded as a long-side reinforcement of the earphone fixing portion 311.

[0104] like Figure 11 As shown in (b), multiple reinforcing ribs can be arranged in strips along the short axis and arranged side by side along the long axis. In this case, the reinforcement structure 318 can be simply regarded as a short-side reinforcement of the earphone fixing portion 311.

[0105] like Figure 11 As shown in (c), multiple reinforcement ribs can be arranged along the long axis and the short axis to form a grid. In this case, the reinforcement structure 318 can be simply regarded as a cross reinforcement of the earphone fixing portion 311.

[0106] like Figure 11 As shown in (d), the ends of the multiple reinforcing ribs close to each other can be spaced apart, and the extension lines of the multiple reinforcing ribs can intersect at a preset reference point (such as Figure 11 In this case, the reinforcement structure 318 can be simply regarded as a radial reinforcement of the earphone fixing portion 311.

[0107] In some embodiments, when the preset dimensional relationship is met between the reinforcing rib and the earphone fixing portion 311, the rigidity of the earphone fixing portion 311 can be effectively increased while the weight of the earphone fixing portion 311 can be well balanced. In some embodiments, the ratio between the thickness of the reinforcing rib and the thickness of the earphone fixing portion 311 can be within a first ratio range. For example, the first ratio range can be 0.8-1.2. In some embodiments, the ratio between the width of the reinforcing rib and the thickness of the earphone fixing portion 311 can be within a second ratio range. For example, the second ratio range can be 0.4-0.6. In some embodiments, the ratio between the spacing between the reinforcing ribs and the thickness of the earphone fixing portion 311 can be within a third ratio range. For example, the third ratio range can be 1.6-2.4. In some embodiments, the thickness of the reinforcing rib can be the same as the thickness of the earphone fixing portion 311, the width of the reinforcing rib can be half the thickness of the earphone fixing portion 311, and the spacing between the reinforcing ribs can be twice the thickness of the earphone fixing portion 311. For example only, this embodiment is described illustratively by assuming that the thickness of the earphone fixing portion 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.

[0108] It should be noted that Figure 10 and Figure 11 The various reinforcement structures shown in the figure can be reasonably combined according to the stiffness requirements of the earphone fixing portion 311, and are not limited here.

[0109] Figure 12 According to some embodiments of this application Figure 10 and Figure 11 Schematic diagram of the frequency response curve corresponding to the reinforcement structure 318. Figure 12 As shown, curve (A+B) can represent the frequency response curve of the earphones when the material of the earphone fixing portion 311 is different from that of the movement housing 21 (for example, the elastic modulus of the former is smaller than that of the latter), and the structure of the earphone fixing portion 311 has not been modified in any way; curve (B+B) can represent the frequency response curve of the earphones when the material of the earphone fixing portion 311 is the same as that of the movement housing 21 (for example, the elastic modulus of the two are equal), and the earphone fixing portion 311 is similar in structure to the movement housing 21 (for example, the thickness of the two is equal, and the area of the earphone fixing portion 311 is also equal to the area of the bottom wall 211). Among them, A can correspond to the earphone fixing portion 311, and B can correspond to the bottom wall 211 (that is, the skin contact area of the movement housing 21); (A+B) and (B+B) can structurally correspond to the earhook housing 31 (specifically, the earphone fixing portion 311) covering the movement housing 21.

[0110] Depend on Figure 12It can be concluded without a doubt that for structure (A+B), its resonance valley (which can correspond to the first high-frequency valley V mentioned above) occurs at a frequency of approximately 5500 Hz; while for structure (B+B), its resonance valley (which can correspond to the first high-frequency valley V mentioned above) occurs at a frequency of approximately 8400 Hz. Obviously, if structure (A+B) is improved to structure (B+B), the resonant frequency of the structure can be effectively increased.

[0111] Furthermore, for the structure (A+B), the earphone fixing portion 311 is provided with the following Figure 10 Fillet shown in (a) Figure 10 Thickening (Thicken) shown in (b), such as Figure 11 Long-Side reinforcement shown in (a) Figure 11 Short-Side reinforcement shown in (b) Figure 11 Cross reinforcement (Cross) shown in (c), Figure 11 After the reinforcement structure 318 such as the radial reinforcement (Radiational) shown in (d) above, the resonance valleys of (A+B+reinforcement structure) all appear in the frequency range of 5500-8400Hz. In other words, providing the reinforcement structure 318 on the earphone fixing portion 311 does help increase the resonant frequency of the structure, that is, it helps to reduce the stiffness difference between the earphone fixing portion 311 and the movement shell 21, and thus helps to improve the above-mentioned sound leakage. It should be noted that the structures of the reinforcement structure 318 are different, and the effect of increasing the resonant frequency is different, that is, the degree of improvement in the sound leakage is different. Just as an example, if the effect of the reinforcement structure 318 on increasing the resonant frequency is ranked from extremely good to relatively good, the order is: cross reinforcement > short side reinforcement > radial reinforcement > thickening > long side reinforcement > chamfering.

[0112] Based on the detailed description above, the movement 22 vibrates under the stimulation of the electrical signal, and drives the movement housing 21 to vibrate along with it. When the user wears the bone conduction earphones 10, the bottom wall 211 of the movement housing 21 (that is, the skin contact area) can contact the user's skin, so that the above-mentioned vibration can be transmitted to the auditory nerve through the human skull, and then the user can hear the sound played by the bone conduction earphones 10. At this time, in order to ensure the reliability of the vibration transmission process, at least the movement housing 21 needs to be able to vibrate along with the movement 22. Therefore, the movement 22 needs to be fixed in the movement housing 21.

[0113] Figure 13 According to some embodiments of this application Figure 8 The cross-sectional structure diagram along the II direction after the middle movement module is assembled. Figure 13 and Figure 8As shown, one end of the movement housing 21 (for example, at the end away from the bottom wall 211) is open, and the movement bracket 23 and the movement 22 are accommodated in the movement housing 21. The movement bracket 23 is used to fix the movement 22 in the movement housing 21. Figure 14 According to some embodiments of this application Figure 8 The schematic diagram of the structure of the core bracket 23. Figure 14 As shown, the movement bracket 23 may include an annular bracket body 231 and a limiting structure provided on the bracket body 231. The movement 22 is hung on the bracket body 231 to be fixedly connected to the movement housing 21. Figure 13 As shown, the limiting structure and the movement housing 21 can be interference-fitted so that the movement bracket 23 is circumferentially aligned with the bracket body 231 (eg, Figure 14 The plane where the bracket body 231 is located can be parallel to the plane where the bottom wall 211 is located to increase the fit between the two and thereby increase the vibration transmission effect. At this time, a colloid such as structural glue, hot melt glue, instant glue, etc. can also be set between the bracket body 231 and the bottom wall 211. Figure 13 (not shown). With this arrangement, the movement bracket 23 and the movement housing 21 can be assembled by a combination of snap-fitting and gluing, thereby effectively limiting the degree of freedom between the movement bracket 23 and the movement housing 21. In some embodiments, the movement bracket 23 and the movement housing 21 can also be fixed directly by gluing. For example, a colloid such as structural glue, hot melt glue, instant glue, etc. is provided between the bracket body 231 and the bottom wall 211. Figure 13 (not shown), it can also effectively limit the freedom between the movement bracket 23 and the movement housing 21, and can also simplify the structure of the movement housing 21.

[0114] like Figure 13 As shown, the movement housing 21 may further include a positioning post 213 connected to the bottom wall 211 or the annular peripheral wall 212. Figure 14 As shown, the retaining structure may include a first retaining structure 232. The first retaining structure 232 is provided with an insertion hole 233. The positioning post 213 is inserted into the insertion hole 233. This arrangement effectively increases the assembly accuracy between the movement bracket 23 and the movement housing 21. In this case, the aforementioned colloid may also be disposed between the bracket body 231 and the bottom wall 211.

[0115] In some embodiments, as Figure 14 As shown, the limiting structure may further include a second limiting structure 234. The second limiting structure 234 is arranged along the circumference of the bracket body 231 (eg Figure 14The second retaining structure 234 is spaced apart from the first retaining structure 232 (in the direction indicated by the arrow C). The second retaining structure 234 is capable of abutting the annular circumferential wall 212, as will be described in detail below. With this arrangement, the second retaining structure 234 and the first retaining structure 232 respectively cooperate with corresponding structures on the movement housing 21, maintaining the movement support 23 relatively fixed to the movement housing 21, effectively limiting the degrees of freedom between the movement support 23 and the movement housing 21.

[0116] like Figure 8 As shown, the opening end of the annular peripheral wall 212 has a long axis direction (such as Figure 8 The direction indicated by the dotted line X) and a short axis direction (as shown in FIG. Figure 8 The dimension of the opening end of the annular peripheral wall 212 along the long axis direction may be greater than the dimension along the short axis direction. Figure 15 According to some embodiments of this application Figure 8 The top view of the structure after the central movement module is assembled. Figure 15 As shown, the first limiting structure 232 and the second limiting structure 234 are spaced apart on opposite sides of the bracket body 231 along the long axis direction, and the first limiting structure 232 and the second limiting structure 234 are on the reference plane where the opening end of the annular peripheral wall 212 is located (such as Figure 15 The projection on the plane (shown by the dotted rectangle) is at least partially located outside the projection of the bracket body 231 on the reference plane. This arrangement facilitates the first limiting structure 232 to cooperate with the positioning post 213, and the second limiting structure 234 to cooperate with the annular peripheral wall 212.

[0117] like Figure 14 As shown, the first limiting structure 232 may include a first axial extension portion 2321 and a first radial extension portion 2322. The first axial extension portion 2321 is connected to the bracket body 231 and extends along the axial direction of the bracket body 231 (eg Figure 14 The first radial extension portion 2322 is connected to the first axial extension portion 2321 and extends toward the outside of the bracket body 231 along the radial direction of the bracket body 231 (that is, the direction of the diameter of the bracket body 231). At this time, the insertion hole 233 is set on the first radial extension portion 2322, as shown in FIG. Figures 13 to 15 As shown, the first limiting structure 232 cooperates with the positioning column 213. Figure 14As shown, the second limiting structure 234 may include a second axial extension portion 2341 and a second radial extension portion 2342. The second axial extension portion 2341 is connected to the bracket body 231 and extends along the axial direction of the bracket body 231 toward the side where the movement 22 is located; the second radial extension portion 2342 is connected to the second axial extension portion 2341 and extends along the radial direction of the bracket body 231 toward the outside of the bracket body 231. At this time, the second radial extension portion 2342 abuts against the annular circumferential wall 212, as shown in FIG. Figure 13 and Figure 15 As shown, for example, the two are engaged so that the second limiting structure 234 and the annular peripheral wall 212 are in contact with each other. Figure 13 As shown, the movement 22 is located between the first axial extension portion 2321 and the second axial extension portion 2341 .

[0118] It should be noted that if Figures 13 to 15 As shown, taking the movement 22 as a reference, if the area between the first axial extension portion 2321 and the second axial extension portion 2341 is the inner side of the bracket body 231 , then the area outside the inner side is the outer side of the bracket body 231 .

[0119] See Figure 13 The annular circumferential wall 212 may further include an inclined region 214 corresponding to the first limiting structure 232 and arranged obliquely relative to the bottom wall 211. The positioning post 213 may be arranged on the inclined region 214. This arrangement can reduce the effective distance between the first radially extending portion 2322 and the bottom wall 211, that is, reduce the height of the positioning post 213, thereby increasing the structural strength of the positioning post 213 (especially the root portion thereof connected to the inclined region 214) on the core housing 21, thereby preventing the positioning post 213 from breaking or falling off when the bone conduction earphone 10 is dropped, collided, or otherwise subjected to extreme conditions.

[0120] See Figure 15 The number of the second limiting structures 234 can be two spaced apart along the short axis direction. The projection of the first limiting structure 232 on the reference plane and the projections of the two second limiting structures 234 on the reference plane are connected in sequence to form an acute triangle (such as Figure 15 In this case, the acute triangle can be an acute isosceles triangle or an equilateral triangle. This arrangement allows the interaction points between the movement bracket 23 and the movement housing 21 to be arranged as symmetrically as possible, thereby increasing the reliability of the assembly of the movement bracket 23 and the movement housing 21.

[0121] In some embodiments, the outer contour of the bracket body 231 can be circular, and the annular peripheral wall 212 can be provided with two arc-shaped recessed areas 2121 opposite each other along the minor axis. The outer contour of the bracket body 231 is embedded in each of the two arc-shaped recessed areas 2121. This configuration can further limit the degree of freedom between the movement bracket 23 and the movement housing 21.

[0122] Based on the above detailed description, when the elastic modulus of the core shell 21 is greater than the elastic modulus of the ear hook shell 31, the ear hook shell 31 is connected to the core shell 21 to form the above structure (A+B). Due to the difference in stiffness, the resonant frequency of the structure (A+B) may be lower (such as Figure 12 The above-mentioned sound leakage is also prone to occur when the structure (A+B) is improved to the structure (B+B), which can effectively increase the resonant frequency of the structure (as shown in the middle curve (A+B)). Figure 12 Based on this, the present embodiment improves the relevant structure of the movement module 20.

[0123] Figure 16 According to some embodiments of this application Figure 1 Schematic diagram of the exploded structure of the core module 20. Figure 16 As shown, the movement module 20 may further include a cover plate 24. One end of the movement housing 21 is open, and the cover plate 24 is provided on the open end of the movement housing 21 to form a cavity structure for accommodating the movement 22. In other words, the cover plate 24 is provided on the other end of the annular circumferential wall 212 away from the bottom wall 211, and is arranged opposite to the bottom wall 211. At this time, the cover plate 24 and the movement housing 21 can be connected by gluing or a combination of snap-fitting and gluing. Furthermore, the ear hook housing 31 is connected to the cover plate 24, for example, the earphone fixing portion 311 covers the side of the cover plate 24 away from the movement housing 21 in a full covering or half covering manner. In this embodiment, the earphone fixing portion 311 fully covers the cover plate 24 as an example for illustrative description. At this time, the ear hook housing 31 and the movement housing 21 can still be connected by gluing or a combination of snap-fitting and gluing.

[0124] It should be noted that Figure 16 The ear hook shell shown in the figure is for the convenience of describing the relative position relationship between the ear hook shell and the cover plate, and further implicitly illustrates a possible assembly method between the ear hook shell and the cover plate.

[0125] In some embodiments, the elastic modulus of the movement housing 21 is greater than the elastic modulus of the ear hook housing 31, and the elastic modulus of the cover plate 24 is greater than the elastic modulus of the ear hook housing 31. At this time, the present embodiment uses the cover plate 24 instead of the earphone fixing portion 311 to connect with the movement housing 21, which helps to increase the rigidity of the structure located at the open end of the movement housing 21 (specifically, the cover plate 24 and the earphone fixing portion 311), and thus helps to reduce the difference between the rigidity of the bottom wall 211 of the movement housing 21 and the rigidity of the structure at its open end. Such a setting can not only ensure that the movement housing 21 has a sufficiently large rigidity so that its resonant frequency is in the highest possible high-frequency range, but also help to increase the resonant frequency of the structure (movement housing 21 + cover plate 24 + earphone fixing portion 311) and help to improve the above-mentioned sound leakage.

[0126] 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 is equal to the elastic modulus of the movement housing 21. At this time, the cover plate 24 can form a structure similar to the above-mentioned (B+B) after being connected to the movement housing 21. In this way, 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 can be less than or equal to the second preset ratio threshold. In some embodiments, the second preset ratio threshold can be 10%. That is, (K1-K3) / K1≤10%, or K3 / K1≥90%.

[0127] In some embodiments, the area of the bottom wall 211 is less than or equal to the area of the cover plate 24, and the thickness of the bottom wall 211 is less than or equal to the thickness of the cover plate 24. Based on the detailed description above, 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 this embodiment, to ensure that the movement housing 21 has sufficient rigidity so that its resonant frequency is in the highest possible high-frequency range, the area of the bottom wall 211 is less than or equal to the area of the cover plate 24. In other words, the area of the open end of the movement housing 21 is greater than the area of the bottom wall 211. In some embodiments, according to the above-mentioned 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-mentioned 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.

[0128] In some embodiments, the material of the cover plate 24 can be the same as that of the movement housing 21, for example, a mixture of polycarbonate and glass fiber and / or carbon fiber. In some embodiments, according to the aforementioned relationship K∝(E·t) / S, in order to satisfy the aforementioned relationship K3 / K1≥90%, the ratio of the thickness to area of the cover plate 24 to the thickness to area of the bottom wall 211 must be greater than or equal to 90%. By way of example only, the thickness to area ratio of the bottom wall 211 can be equal to the thickness to area ratio of the cover plate 24.

[0129] It should be noted that, according to the aforementioned relationship K∝(E·t) / S, in order to satisfy the aforementioned relationship (K1-K3) / K1≤10%, the structural parameters (e.g., thickness, area, and their ratio) of the cover plate 24 and the movement housing 21 can be designed based on their materials. Alternatively, the materials of the cover plate 24 and the movement housing 21 can be selected based on their structural parameters. Therefore, the aforementioned embodiment merely provides two possible design solutions as examples.

[0130] Based on the above detailed description, after the cover 24 replaces the earphone fixing part 311 to be connected to the movement shell 21, the earphone fixing part 311 still needs to be connected to the side of the cover 24 facing away from the movement shell 21, for example, the earphone fixing part 311 fully covers the cover 24.

[0131] In some embodiments, if the earhook shell 31 and the cover plate 24 are both made of plastic, and the elastic modulus of the former is smaller than that of the latter, the two can be formed into an integral structure with the help of two-color injection molding. If the earhook shell 31 is made of plastic, and the cover plate 24 is made of metal, and the elastic modulus of the former is smaller than that of the latter, the two can be formed into an integral structure with the help of metal insert injection molding. At this time, the earhook shell 31 and the cover plate 24 will be connected to the movement shell 21 as a whole. Such an arrangement can well ensure the consistency of the vibration of the earhook shell 31 and the cover plate 24. However, it will be difficult to set the buttons mentioned above, the second microphone mentioned later, etc. between the earhook shell 31 and the cover plate 24.

[0132] In some embodiments, the earphone fixing portion 311 and the cover plate 24 are connected by gluing or a combination of clamping and gluing. At this time, the button mentioned above and the second microphone mentioned below are also provided between the earhook housing 31 and the cover plate 24. The specific structure will be described in detail later. In some embodiments, the colloid ( Figure 16The filling degree between the two (not shown) should be as large as possible, for example, greater than or equal to 90%. This is because, if the filling degree of the colloid provided between the earphone fixing portion 311 and the cover plate 24 is too low, not only will the connection strength between the earphone fixing portion 311 and the cover plate 24 be difficult to ensure, but there may also be a significant hysteresis in the vibration of the two, and air may be trapped between the two, which may adversely affect the resonant frequency of the structure. In other words, the beneficial effect of improving the structure (A+B) to the structure (B+B) mentioned above is difficult to ensure, and the structure may also produce noise during vibration.

[0133] Figure 17 According to some embodiments of this application Figure 14 Schematic diagram of the frequency response curve of the structure corresponding to different types of colloids arranged between the middle ear hook component 30 and the cover plate 24. Figure 17 As shown, different types of colloids (such as structural adhesive, hot melt adhesive, instant adhesive, silicone, etc.) arranged between the earphone fixing portion 311 and the cover plate 24 also have a great influence on the resonant frequency of the structure. Figure 17 It can be concluded that different types of colloids do affect the resonant frequency of the structure. If the aforementioned colloids are ranked from best to worst in terms of their beneficial effects on the resonant frequency, the order is: structural adhesive > hot melt adhesive > instant adhesive > silicone. It should be noted that due to its generally soft texture, silicone has the weakest beneficial effect on the resonant frequency of the structure. Therefore, if the resonant frequency of the structure is a concern, a harder colloid can be placed between the earphone fixing portion 311 and the cover plate 24.

[0134] Based on the detailed description above, on the one hand, the movement bracket 23 can be used to fix the movement 22 in the movement housing 21 to increase the reliability of the movement 22 driving the movement housing 21 to vibrate; on the other hand, the cover plate 24 can be used to increase the rigidity of the structure located at the open end of the movement housing 21 (specifically, the cover plate 24 and the earphone fixing portion 311) to reduce the difference between the rigidity of the bottom wall 211 of the movement housing 21 and the rigidity of the structure at its open end. Among them, with respect to the cooperation between the movement bracket 23 and the movement housing 21 (especially in the above-mentioned Z direction), it can be achieved by gluing between the bracket body 231 and the bottom wall 211; and / or, by snapping together between the limiting structure and the annular circumferential wall 212. Furthermore, based on the cover plate 24, this embodiment provides another inventive concept for the cooperation between the movement bracket 23 and the movement housing 21 (especially in the above-mentioned Z direction).

[0135] Figure 18 According to some embodiments of this application Figure 16 Schematic diagram of the cross-sectional structure of the middle movement module 20 along the II-II direction after assembly. Figure 19According to some embodiments of this application Figure 16 The structural diagram of the middle cover 24 close to the movement housing 21. Figure 18 and Figure 19 As shown, the cover plate 24 not only covers the open end of the movement housing 21, but also has a pressing structure on the side of the cover plate 24 facing the movement housing 21. The pressing structure is used to press and fix the movement bracket 23 within the movement housing 21. This configuration not only increases the rigidity of the structure at the open end of the movement housing 21 (specifically, the cover plate 24 and the headphone fixing portion 311), but also presses the movement bracket 23 into the movement housing 21, thereby making the cover plate 24 a "two-in-one" device.

[0136] like Figure 19 As shown, the cover plate 24 may include a cover plate body 241 and a pressing structure integrally connected to the cover plate body 241. The pressing structure may include a first pressing column 242 and a second pressing column 243, and the first pressing column 242 and the second pressing column 243 are arranged at intervals along the circumference of the cover plate body 241 and form abutment with the movement bracket 23. In some embodiments, the plane where the cover plate body 241 is located can be parallel to the plane where the bottom wall 211 is located, so that the plane where the cover plate body 241 is located can be parallel to the plane where the bracket body 231 is located, and then the extension direction of the first pressing column 242 and the second pressing column 243 can be perpendicular to the plane where the bracket body 231 is located, that is, the extension direction of the first pressing column 242 and the second pressing column 243 can be parallel to the above-mentioned Z direction. Such a setting can effectively limit the degree of freedom between the movement bracket 23 and the movement housing 21, especially in the above-mentioned Z direction.

[0137] Figure 20 According to some embodiments of this application Figure 19 Schematic diagram of the top view of the middle cover. Figure 20 As shown, the cover plate 24 may have a long axis direction (eg Figure 20 The direction indicated by the dotted line X) and a short axis direction (as shown in FIG. Figure 20 The cover plate 24 can be sized along its major axis to be larger than its minor axis. The first and second abutting posts 242 and 243 are spaced apart along the major axis. This arrangement enhances the reliability of the cover plate 24 in retaining the movement support 23 within the movement housing 21.

[0138] In some embodiments, the number of the second pressure columns 243 can be two spaced apart along the short axis direction. The projection of the first pressure column 242 on the cover body 241 and the projections of the two second pressure columns 243 on the cover body 241 are connected in sequence to form an acute triangle (such as Figure 20In this case, the acute triangle can be an acute isosceles triangle or an equilateral triangle. This arrangement ensures that the points of interaction between the cover plate 24 and the movement bracket 23 are as symmetrical as possible, thereby increasing the reliability of the cover plate 24 in pressing the movement bracket 23 into the movement housing 21.

[0139] See Figure 18 The first pressing column 242 contacts and abuts the first limiting structure 232, and the second pressing column 243 contacts and abuts the second limiting structure 234. At this time, the second limiting structure 234 and the annular peripheral wall 212 may not form a contact. Figure 13 The abutting and fitting relationship shown is used to reduce the processing accuracy of the second limiting structure 234, thereby saving the manufacturing cost of the movement bracket 23.

[0140] Similarly, if Figure 14 As shown, the first limiting structure 232 may include a first axial extension portion 2321 and a first radial extension portion 2322. The first axial extension portion 2321 is connected to the bracket body 231 and extends along the axial direction of the bracket body 231 (eg Figure 14 The first radial extension portion 2322 is connected to the first axial extension portion 2321 and extends toward the outside of the bracket body 231 along the radial direction of the bracket body 231 (that is, the direction of the diameter of the bracket body 231). At this time, the insertion hole 233 is provided on the first radial extension portion 2322, and the first pressing column 242 is in contact with the first radial extension portion 2322, that is, the first pressing column 242 presses the first radial extension portion 2322. Further, as shown in FIG. Figure 14 As shown, the second retaining structure 234 can include a second axially extending portion 2341 and a second radially extending portion 2342. The second axially extending portion 2341 is connected to the support body 231 and extends axially of the support body 231 toward the side where the movement 22 is located. The second radially extending portion 2342 is connected to the second axially extending portion 2341 and extends radially outward of the support body 231. At this point, the second pressing post 243 abuts the second radially extending portion 2342, i.e., the two are in contact and form a pressing force.

[0141] It should be noted that when the number of the second pressure posts 243 is two, spaced apart along the minor axis, and the projection of the first pressure post 242 on the cover plate body 241 and the projections of the two second pressure posts 243 on the cover plate body 241 are connected in sequence to form an acute triangle, the number of the second limiting structures 234 can also be two, spaced apart along the minor axis, and respectively arranged corresponding to the second pressure posts 243. In this arrangement, when the first pressure post 242 abuts against the first limiting structure 232 (specifically, the first radial extension 2322), the two second pressure posts 243 can respectively abut against the second limiting structure 234 (specifically, the second radial extension 2342), thereby increasing the reliability of the cover plate 24 in pressing the movement bracket 23 into the movement housing 21.

[0142] It is worth noting that Figure 18 As shown, since the first axial extension portion 2321 and the second axial extension portion 2341 extend toward the direction close to the cover plate 24, the first pressure column 242 and the second pressure column 243 also extend toward the direction close to the movement shell 21, so that the height of the first limiting structure 232 and the second limiting structure 234 relative to the bracket body 231, and the height of the first pressure column 242 and the second pressure column 243 relative to the cover plate body 241 can both be half of the distance between the cover plate body 241 and the bracket body 231. This arrangement is to avoid the first limiting structure 232 and the second limiting structure 234 from breaking or falling off due to their excessive height relative to the bracket body 231 when the bone conduction earphone 10 is dropped, collided, or other extreme situations occur; or to avoid the first pressing column 242 and the second pressing column 243 from breaking or falling off due to their excessive height relative to the cover body 241 when the bone conduction earphone 10 is dropped, collided, or other extreme situations occur, thereby taking into account the structural strength of the first limiting structure 232 and the second limiting structure 234 on the bracket body 231 and the structural strength of the first pressing column 242 and the second pressing column 243 on the cover body 241.

[0143] See Figure 19 , the first pressing column 242 is arranged in a tubular shape. Figure 18 As shown, the positioning column 213 is not only inserted into the insertion hole 233 to increase the assembly accuracy between the movement bracket 23 and the movement shell 21; it is also further inserted into the first pressing column 242 to increase the assembly accuracy between the cover plate 24 and the movement shell 21.

[0144] Figure 21 According to some embodiments of this application Figure 16 The schematic diagram of the decomposition structure of the core module from another perspective. Figure 21As shown, the movement module 20 may also include a first microphone 25 and a second microphone 26. When the cover plate 24 is placed on the open end of the movement housing 21, the two form a cavity structure for accommodating the movement 22. At this time, the first microphone 25 can be accommodated in the movement housing 21, and the second microphone 26 can be arranged outside the movement housing 21, so that the cover plate 24 separates the first microphone 25 from the second microphone 26, thereby avoiding interference between the two (especially the rear sound cavities of the two). With such an arrangement, the cover plate 24 can not only increase the rigidity of the structure at the open end of the movement housing 21 (specifically, the cover plate 24 and the earphone fixing portion 311), and can press the movement bracket 23 into the movement housing 21, but can also separate the first microphone 25 from the second microphone 26, thereby enabling the cover plate 24 to achieve "one piece, three uses". Furthermore, when the ear hook housing 31 is covered on the cover plate 24 , that is, when the earphone fixing portion 311 is covered on the side of the cover plate 24 facing away from the movement housing 21 , the second microphone 26 can be arranged between the cover plate 24 and the earphone fixing portion 311 .

[0145] In some embodiments, both the first microphone 25 and the second microphone 26 can be connected to the main control circuit board 50 so that they can transmit processed sound to the main control circuit board 50. The first microphone 25 and the second microphone 26 can be any one of a variety of types, such as electrodynamic, capacitive, piezoelectric, carbon, or semiconductor, or a combination thereof. Specifically, they can be electret or silicon pickups. Their specific structures are within the purview of those skilled in the art and will not be described in detail here. In this case, the first microphone 25 and the second microphone 26 can be used to pick up ambient sound from the wearer's environment to facilitate noise reduction in the bone conduction earphones 10, thereby improving user experience. They can also be used to pick up the wearer's voice, allowing the bone conduction earphones 10 to function as both a speaker and a microphone, thereby expanding the application range of the bone conduction earphones 10. Of course, the first microphone 25 and the second microphone 26 can also pick up the wearer's voice and the sound of the environment at the same time, so that the bone conduction headset 10 can realize the microphone function while also performing noise reduction processing, thereby improving the user favorability of the bone conduction headset 10.

[0146] like Figure 21As shown, an annular flange 215 is provided on the inner side of the annular circumferential wall 212, into which the first microphone 25 can be embedded and fixed. A microphone accommodating groove 244 is recessed on the side of the cover plate 24 (specifically, the cover plate body 241) facing away from the movement housing 21. The second microphone 26 can be positioned within the microphone accommodating groove 244 and covered by the earphone fixing portion 311. This reduces the overall thickness after the second microphone 26 is positioned between the cover plate 24 and the earphone fixing portion 311, thereby increasing the structural feasibility and reliability of the three components. In other words, the first microphone 25 is fixed to the annular circumferential wall 212, and the second microphone 26 is fixed to the cover plate 24. At this time, in order to facilitate the first microphone 25 and the second microphone 26 to pick up the wearer's voice and / or the sound of the wearer's environment, a pickup hole (not marked in the figure) is generally provided on the annular circumferential wall 212 at a position corresponding to the first microphone 25, and a pickup hole (not marked in the figure) is generally provided on the earphone fixing portion 311 at a position corresponding to the second microphone 26. Among them, the sound input direction of the first microphone 25 can be parallel to the cover plate 24 or tilted relative to the cover plate 24, and the sound input direction of the second microphone 26 can be perpendicular to the cover plate 24. This arrangement allows the first microphone 25 and the second microphone 26 to pick up sounds from different directions, thereby increasing the noise reduction effect and / or microphone effect of the bone conduction earphone 10, thereby improving the user's favorability of the bone conduction earphone 10.

[0147] It should be noted that the sound input direction of the first microphone 25 is perpendicular to the annular circumferential wall 212. Based on the detailed description above, the plane of the cover plate 24 (specifically, the cover plate body 241) can be parallel to the plane of the bottom wall 211, and the annular circumferential wall 212 can be perpendicular to the bottom wall 211, or it can be tilted outward at an angle relative to the bottom wall 211 (for example, an angle of less than or equal to 30°). Therefore, when the annular circumferential wall 212 is perpendicular to the bottom wall 211, the sound input direction of the first microphone 25 is parallel to the cover plate 24; when the annular circumferential wall 212 is tilted outward at an angle relative to the bottom wall 211, the sound input direction of the first microphone 25 is tilted relative to the cover plate 24, and the tilt angles of the two can be substantially equal.

[0148] In some embodiments, the projection of the second microphone 26 on the cover plate 24 can be staggered from the projection of the first microphone 25 on the cover plate 24. This arrangement allows the first microphone 25 and the second microphone 26 to pick up sounds from different directions, thereby enhancing the noise reduction and / or microphone effect of the bone conduction earphone 10 and improving the user experience of the bone conduction earphone 10. The projection of the second microphone 26 on the cover plate 24 can be positioned closer to the curved transition portion 312 than the projection of the first microphone 25 on the cover plate 24. This arrangement increases the relative distance between the first microphone 25 and the second microphone 26, further enabling the first microphone 25 and the second microphone 26 to pick up sounds from different directions. In some embodiments, the larger the relative distance, the better.

[0149] It should be noted that in Figure 21 From the perspective shown, the first microphone 25 and the second microphone 26 are located on opposite sides of the cover plate 24, and the first microphone 25 is located on the back side of the cover plate 24, so that the projection of the first microphone 25 on the cover plate 24 is actually invisible. Therefore, for the convenience of the corresponding description, the first microphone 25 and the second microphone 26 are simply regarded as being located on the same side of the cover plate 24, and the projection of the first microphone 25 on the cover plate 24 is replaced by a dotted frame.

[0150] Figure 22 According to some embodiments of this application Figure 21 Schematic diagram of the top view of the middle cover. Figure 22 As shown, the cover plate 24 may have a long axis direction (eg Figure 22 The direction indicated by the dotted line X) and a short axis direction (as shown in FIG. Figure 22 The direction indicated by the dotted line Y). The dimension of the cover plate 24 along the long axis direction may be greater than the dimension along the short axis direction. In this case, the line between the projection of the second microphone 26 on the cover plate 24 and the projection of the first microphone 25 on the cover plate 24 (as shown in FIG. Figure 22 The angle between the projection of the second microphone 26 on the cover plate 24 and the projection of the first microphone 25 on the cover plate 24 is less than 45°. For example, the angle is less than or equal to 10°. For another example, the line connecting the projection of the second microphone 26 on the cover plate 24 and the projection of the first microphone 25 on the cover plate 24 coincides with the long axis direction. With such an arrangement, the projection of the second microphone 26 on the cover plate 24 and the projection of the first microphone 25 on the cover plate 24 can be staggered from each other, and the relative distance between the two can be increased, thereby enabling the first microphone 25 and the second microphone 26 to further pick up sounds from different directions. Among them, the projection of the second microphone 26 on the cover plate 24 can be arranged closer to the bending transition portion 312 than the projection of the first microphone 25 on the cover plate 24.

[0151] Based on the above detailed description, the movement 22 and the first microphone 25 can be arranged in the movement housing 21, and the cover 24 can be covered on the open end of the movement housing 21. In order to facilitate wiring, corresponding through holes and grooves can be opened on the cover 24. Figure 21 and Figure 16 As shown, the cover plate 24 is further provided with a threading hole 245. Since the projection of the second microphone 26 on the cover plate 24 can be arranged closer to the bending transition portion 312 than the projection of the first microphone 25 on the cover plate 24, the threading hole 245 can be arranged closer to the first microphone 25. This arrangement allows the wires ( Figure 21 and Figure 16 The wires (not shown) can extend from the movement housing 21 through the wire hole 245 to the side of the cover plate 24 facing away from the movement housing 21, and further extend through the wiring channel in the bent transition portion 312 to the accommodating compartment 313. At this time, after the earphone fixing portion 311 covers the cover plate 24, at least a portion of the wire (its length can be at least the straight-line distance between the wire hole 245 and the second microphone 26) will be located between the cover plate 24 and the earphone fixing portion 311.

[0152] In some embodiments, as Figure 21 and Figure 16 As shown, the side of the cover plate 24 facing away from the movement housing 21 may also be recessed to form a wiring groove 246. One end of the wiring groove 246 communicates with the wire threading hole 245, allowing the aforementioned wires to extend further along the wiring groove 146. This arrangement reduces the overall thickness of the cover plate 24 and the earphone mounting portion 311 after the wiring is partially installed, thereby increasing the feasibility and reliability of the three structures.

[0153] It should be noted that after the wires are routed through the wire holes 245 and the wire grooves 246 within the movement housing 21, glue can be applied to at least both ends of the wire grooves 246 to secure the wires relative to the cover 24, thereby increasing the structural compactness of the cover 24, the earphone fixing portion 311, and the wires. Applying glue to the wire holes 245, in particular, can also improve the airtightness of the movement module 20.

[0154] In some embodiments, as Figure 21 As shown, two wire management grooves 216 can be arranged side by side on the inner side of the annular peripheral wall 212, and the two wire management grooves 216 can be close to the annular flange 215. Figure 21 Not shown) and the positive and negative terminals of the movement 22 ( Figure 21The two welding points formed between the two terminals (not shown) are accommodated in two wire management grooves 216. This arrangement avoids the occurrence of short circuits and other adverse phenomena when the positive and negative terminals of the movement 22 are welded with the positive and negative poles of the above-mentioned wires, thereby increasing the reliability of the movement 22 wiring.

[0155] In some embodiments, when the bone conduction earphone 10 is further provided with Figure 4 When the button 36 is shown, the cover plate 24 may be provided with a button receiving groove ( Figure 1 (The key 36 is visible but not labeled in the figure). The key 36 is located within the key accommodating groove and is covered by the earphone mounting portion 311. This arrangement reduces the overall thickness of the cover plate 24 and the earphone mounting portion 311 after the key 36 is installed, thereby increasing the structural feasibility and reliability of the three components. The key accommodating groove is similar to the microphone accommodating groove 244 described above.

[0156] It should be noted that Figure 2 The housing compartment 313 shown can be used to accommodate the main control circuit board 50. Figure 4 The housing 313 shown can be used to accommodate the battery 60. Therefore, the first microphone 25 and the second microphone 26 can specifically correspond to Figure 2 The ear hook assembly 30 shown is convenient for connecting the two to the main control circuit board 50, thereby shortening the wiring distance. In addition, due to the limited volume of the movement module 20 and the ear hook assembly 30, if the button 36 is set together with the first microphone 25 and the second microphone 26, it may cause interference between the three in structure. Therefore, the button 36 can specifically correspond to Figure 4 In other words, if the button 36 corresponds to the left ear hook of the bone conduction earphone 10, the first microphone 25 and the second microphone 26 may correspond to the right ear hook of the bone conduction earphone 10; conversely, if the button 36 corresponds to the right ear hook of the bone conduction earphone 10, the first microphone 25 and the second microphone 26 may correspond to the left ear hook of the bone conduction earphone 10. In some embodiments, for example Figure 8 As for the movement module 20 shown in FIG. 1 , since it does not have Figure 16 The cover 24 of the movement module 20 shown above may require adjustments to the aforementioned structures, including the first microphone 25, second microphone 26, and button 36. For example, the bone conduction earphone 10 may have only one first microphone 25 or one second microphone 26; or, the bone conduction earphone 10 may still have both the first microphone 25 and the second microphone 26, but if one of the first microphone 25 and the second microphone 26 corresponds to the left earhook of the bone conduction earphone 10, the other may correspond to the right earhook. For another example, the button 36 may be specifically fixed to the side of the earphone fixing portion 311 near the movement housing 21.

[0157] Figure 23 This is a schematic diagram of the principle of the movement shown in some embodiments of the present application. Figure 23 As shown, the movement 22 may include a magnetic shield 221, a magnet 222, a magnetic plate 223, and a coil 224. The magnetic shield 221 may include a base plate 2211 and an annular side plate 2212 integrally connected to the base plate 2211. Furthermore, the magnet 222 may be disposed within the annular side plate 2212 and fixed to the base plate 2211, and the magnetic plate 223 may be fixed to the side of the magnet 222 facing away from the base plate 2211. The coil 224 may be disposed within the magnetic gap 225 between the magnet 222 and the annular side plate 2212 and fixed to the movement bracket 23. In some embodiments, the magnetic gap between the magnet 222 and the annular side plate 2212 may be m, where m may be greater than or equal to the first gap and less than or equal to the second gap, to balance the movement requirements of the coil 224 and the compactness of the movement 22. For example, 1.0 mm ≤ m ≤ 1.5 mm.

[0158] It should be noted that Figure 23 The movement shown can be used for Figure 8 The movement module shown can also be applied to Figure 16 In the movement module shown. Figure 23 The movement bracket shown in the figure is for the purpose of describing the relative positional relationship between the movement bracket and the movement, and further implicitly illustrating a possible assembly method between the movement bracket and the movement.

[0159] In some embodiments, magnet 222 may include a metal alloy magnet, ferrite, or the like. Specifically, the metal alloy magnet may include any one of neodymium iron boron, samarium cobalt, aluminum nickel cobalt, iron chromium cobalt, aluminum iron boron, iron carbon aluminum, or the like, or a combination thereof; the ferrite may include any one of barium ferrite, steel ferrite, manganese ferrite, lithium manganese ferrite, or the like, or a combination thereof. In some embodiments, magnet 222 has a magnetization direction to facilitate forming a relatively stable magnetic field.

[0160] The magnetic shield 221 and the magnetic plate 223 cooperate with each other to adjust the magnetic field generated by the magnet 222 to increase the utilization rate of the magnetic field. The magnetic shield 221 and the magnetic plate 223 can be made of soft magnetic materials such as metals, metal alloys, metal oxides, and amorphous metals. Specifically, the soft magnetic materials may include iron, iron-silicon alloys, iron-aluminum alloys, nickel-iron alloys, iron-cobalt alloys, low-carbon steel, silicon steel sheets, silicon steel sheets, ferrites, and the like.

[0161] With this arrangement, coil 224 is located within the magnetic field formed by magnet 222, magnetic shield 221, and magnetic plate 223. Driven by the electrical signal, coil 224 is subjected to the Ampere force. Driven by the Ampere force, coil 224 causes movement 22 to generate mechanical vibrations. Movement 22 can be secured within movement housing 21 via movement bracket 23, allowing movement housing 21 to vibrate accordingly. In this embodiment, the resistance of coil 224 can be a predetermined value, such as 8Ω, to balance the generation of the Ampere force with the circuit structure of movement 22.

[0162] Based on the detailed description above, the volume of the movement housing 21 is often limited, requiring at least the accommodation of the movement 22, the movement bracket 23, and the first microphone 25. While increasing the size of the movement 22 (e.g., by increasing the volume of the magnet 222 and / or the number of turns of the coil 224) can achieve a greater Ampere force, thereby better driving the movement housing 21, this also increases the weight and volume of the movement module 20, hindering its lightweighting. Therefore, in some embodiments, the movement 22 can be studied and optimized based on the Ampere force formula F = BILsinθ. Parameter B represents the strength of the magnetic field formed by the magnet 222, the magnetic shield 221, and the magnetic plate 223; parameter L represents the effective length of the coil 224 in the magnetic field; parameter θ represents the angle between the two (here, θ = 90°); and parameter I represents the current in the coil 224 at a specific moment. Obviously, for a completely designed, manufactured, and assembled movement 22, parameters B and L are often relatively fixed values, while parameter I varies with the electrical signal input to movement 22. Therefore, optimizing the design of movement 22 can be simply viewed as optimizing the force coefficient BL; parameters B and L, in turn, can be determined by structural parameters such as the shape and size of magnet 222, magnetic shield 221, and magnetic plate 223.

[0163] The following describes in detail the influence of the shape, size and other structural parameters of the magnet 222, the magnetic cover 221 and the magnetic plate 223 on the force coefficient BL. In some embodiments, the magnet 222 can be cylindrical. Figure 24 According to some embodiments of this application Figure 23 Schematic diagram of the relationship between the magnet and the force coefficient BL. Figure 24 As shown, the horizontal axis is the diameter φ of the magnet 222, and the vertical axis is the thickness t1 of the magnet 222. Figure 24It can be concluded that the larger the diameter φ of the magnet 222, the larger the force coefficient BL; and the larger the thickness t1 of the magnet 222, the larger the force coefficient BL. In some embodiments, in order for the bone conduction earphone 10 to produce sufficient volume, that is, to generate a sufficiently large Ampere force to drive the coil 224 and thus the movement housing 21 to vibrate, the force coefficient BL generally needs to be greater than a force coefficient threshold. As an example, the force coefficient threshold may be 1.3. In some embodiments, taking into account the weight and volume of the movement module 20 (specifically, the movement 22), the diameter φ of the magnet 222 may be greater than or equal to the first diameter and less than or equal to the second diameter. For example, 10.5 mm ≤ φ ≤ 11.5 mm. For another example, the diameter φ of the magnet 222 may be 10.8 mm. In some embodiments, the thickness t1 of the magnet 222 may be greater than or equal to the first thickness and less than or equal to the second thickness. For example, 3.0 mm ≤ t1 ≤ 4.0 mm. For another example, the thickness t1 may be 3.5 mm.

[0164] In some embodiments, the diameter of the magnetic conductive plate 223 may be equal to the diameter of the magnet 222 , the thickness of the magnetic conductive plate 223 may be equal to the thickness of the magnetic conductive cover 221 , and the magnetic conductive plate 223 and the magnetic conductive cover 221 may be made of the same material. Figure 25 According to some embodiments of this application Figure 23 Schematic diagram of the relationship between the thickness of the magnetic shield and the magnetic plate and the force coefficient BL. Figure 25 As shown, the horizontal axis is the thickness t2 of the magnetic cover 221, and the vertical axis is the force coefficient BL. Figure 25 It can be concluded that: within a certain range, the value of the force coefficient BL increases with the increase of the thickness t2; however, for t2>0.8mm, the change in the value of the force coefficient BL is not obvious, that is, continuing to increase the thickness t2 after t2>0.8mm will not only have little benefit, but will also increase the weight of the movement 22. Therefore, considering the value of the force coefficient BL (at least greater than 1.3) and the weight and volume of the movement module 20 (specifically, it can be the movement 22), the thickness t2 of the magnetic plate 223 and / or the magnetic cover 221 can be greater than or equal to the third thickness and less than or equal to the fourth thickness. For example, 0.4mm≤t2≤0.8mm. For another example, the thickness t2 can be 0.5mm.

[0165] In some embodiments, the annular side plate 2212 may also be cylindrical, and its diameter D may be the sum of the diameter φ of the magnet 222 and twice the magnetic gap m, that is, D=φ+2m. Figure 26 According to some embodiments of this application Figure 23 Schematic diagram of the relationship between the height of the magnetic shield and the force coefficient BL. Figure 26As shown, the horizontal axis is the height h of the magnetic cover 221 (specifically, the annular side plate 2212), and the vertical axis is the force coefficient BL. Figure 26 It can be concluded that: within a certain range, the value of the force coefficient BL increases with the increase of the height h of the magnetic shield 221; however, for h>4.2mm, the value of the force coefficient BL becomes smaller and smaller. Therefore, considering the value of the force coefficient BL (at least greater than 1.3) and the weight and volume of the movement module 20 (specifically, the movement 22), the height h of the magnetic shield 221 can be greater than or equal to the first height and less than or equal to the second height. For example, 3.4mm≤h≤4.0mm. For another example, the height h of the magnetic shield 221 can be 3.7mm.

[0166] See Figure 1 , the bone conduction earphone 10 may include two core modules 20. Among them, any one of the two core modules 20 may correspond to Figure 8 The movement module shown, the other can correspond to Figure 16 The movement module shown. It should be noted that the specific structure of each movement module 20 may be the same as or similar to that of any of the above embodiments, and reference may be made to the detailed description of any of the above embodiments, which will not be repeated here. In some embodiments, the number of movement modules 20 may not be limited to two. For example, the bone conduction headset 10 may be provided with three or more movement modules 20. For another example, in some application scenarios where the requirements for stereo sound are not particularly high, such as hearing aids for hearing patients, live prompting by hosts, etc., the bone conduction headset 10 may also be provided with only one movement module 20. For another example, the headset may also include an air conduction headset (for example, a monaural air conduction headset) provided with a movement module 20, and the air conduction headset may be hung on the user's auricle through a fixing component (for example, an ear hook component), and transmit sound signals to the user through one or more sound guide holes.

[0167] In some embodiments, the magnet 222 can also be configured to allow the movement module 20 to be adsorbed on a magnetic object. For example, the magnet 222 can be set close to the bottom wall 211 of the movement housing 21, so that the movement module 20 can have magnetism on the side close to the bottom wall 211, thereby being adsorbed on the magnetic object through the side of the bottom wall 211. The magnetic object includes a metal product (for example, a bracket) that can be adsorbed by the magnet 222, a mobile device (for example, a mobile phone), a charging device (for example, a magnetic charging device), another movement module (for example, Figure 27 The two mutually adsorbed movement modules 20 shown in the figure) or any combination thereof.

[0168] Taking a magnetic object as a charging device as an example, a magnetic connector can be provided on the bottom wall 211 of the core housing 21. When charging the earphones, the magnetic connector and the corresponding power interface of the charger form a system, and the two are structurally matched so that they can be adsorbed together, thereby establishing an electrical connection to charge the earphones. For example, the magnet 222 can be provided as part of the magnetic connector on the inner side of the bottom wall 211 (i.e., the side of the bottom wall 211 facing away from the user's head), so that the magnetic connector can be adsorbed on the power interface of the charging device. The outer side of the bottom wall 211 (i.e., the side of the bottom wall 211 facing the user's head) can be provided with a charging terminal, one side of the charging terminal can establish an electrical connection with the power interface of the charging device, and the other side can be connected to the battery 60 of the earphone (for example, through a wire), thereby cooperating with the power interface to charge the earphones. In some embodiments, the charging terminal can be omitted, and the earphones can be directly adsorbed on the charging device through the magnet 222 for wireless charging. Exemplary wireless charging methods may include electromagnetic induction wireless charging, magnetic field resonance wireless charging, radio wave wireless charging, solar charging, etc., or any combination thereof. In some embodiments, the charging device may include a fixed charging device, a mobile charging device, etc.

[0169] In some embodiments, the bone conduction earphone 10 may include two core modules 20. The magnet 222 may be configured to allow the two core modules 20 to be attracted to each other. Figure 27 According to some embodiments of this application Figure 1 Schematic diagram of the bone conduction earphones when not in use. Figure 27 As shown, the polarities of the magnets 222 of the two movement modules 20 are different on the side of the bottom wall 211 of the movement housing 21 where they are located, so that when the bone conduction earphones 10 are not worn, the two movement modules 20 can be adsorbed on each other. This arrangement makes it easier for users to store the bone conduction earphones 10. It is worth noting that the magnet 222 is also used to form a magnetic field so that the coil 224 can vibrate under the excitation of an electrical signal. The vibration of the coil 224 can be transmitted to the auditory nerve of the human ear through bone conduction and / or air conduction, so that people can hear sounds. At this time, the magnet 222 can achieve "two uses in one piece".

[0170] In some embodiments, before the movement module 20 is assembled, the magnet 222 may not be pre-magnetized; instead, after the movement module 20 is assembled, the movement module 20 as a whole is placed in a magnetizing device for magnetization treatment, thereby making the magnet 222 magnetic. After the above magnetization treatment, the magnetic field direction of the magnet 222 of the two movement modules 20 can be as follows: Figure 27With this arrangement, since the magnet 222 has no magnetism before assembly, the assembly of the core module 20 will not be disturbed by magnetic force, thereby increasing the assembly efficiency and yield of the core module 20, thereby increasing the production capacity and efficiency of the bone conduction earphone 10.

[0171] Figure 28 According to some embodiments of this application Figure 1 The cross-sectional structure diagram of the middle rear hanging assembly 40 along the III-III direction. Figure 28 As shown, the rear hanging assembly 40 may include an elastic metal wire 41, a wire 42 and an elastic covering body 43 covering the elastic metal wire 41 and the wire 42. The elastic covering body 43 and the wire 42 are an integral structure formed by extrusion; the covering body 43 further forms a threading channel ( Figure 28 (not marked in the figure), the elastic wire 41 is threaded through the threading channel. For example, the threading channel is formed during the extrusion process. In some embodiments, the elastic wire 41 can be made of spring steel, titanium alloy, titanium-nickel alloy, chrome-molybdenum steel, etc., and the elastic sheath 43 can be made of polycarbonate, polyamide, silicone, rubber, etc., so that the rear suspension assembly 40 can achieve both wearing comfort and structural rigidity.

[0172] It should be noted that, since the elastic metal wire 41 is passed through the threading channel and is arranged in the covering body 43, Figure 28 The area where the elastic metal wire 41 is located can be simply regarded as a threading channel in the sheath 43 .

[0173] In some embodiments, the diameter of the threading channel in its natural state can be smaller than the diameter of the elastic metal wire 41, so that the elastic metal wire 41 can remain fixed with the elastic sheathing body 43 after being inserted into the threading channel, so as to avoid the undesirable phenomenon of "sinking" of the rear hanging component 40 due to the excessive gap between the elastic sheathing body 43 and the elastic metal wire 41, especially when the user presses the rear hanging component 40, thereby increasing the structural compactness of the rear hanging component 40.

[0174] In some embodiments, the number of the wires 42 may be at least two. Each wire 42 may include a metal wire and an insulating layer covering the metal wire ( Figure 28 The insulating layer is used to achieve electrical insulation between metal wires.

[0175] In some embodiments, as Figure 1 、 Figure 2 、 Figure 4 、 Figure 8 and Figure 16 As shown, since the main control circuit board 50 and the battery 60 can be respectively arranged in the two ear hook components 30, and Figure 2 and Figure 4The ear hook assembly 30 shown can correspond to the left ear hook and the right ear hook of the bone conduction headset 10 respectively, so that not only the main control circuit board 50 and the battery 60 need to be connected via the wire 42 built into the back hanging assembly 40, but also the ear hook corresponding to the left ear hook and the right ear hook of the bone conduction headset 10. Figure 1 The movement module 20 (specifically, the movement 22) and the button 36 of the middle (left) ear hook component 30 need to be further connected to the corresponding Figure 1 The main control circuit board 50 of the middle (right) ear hook assembly 30 is connected, corresponding to Figure 1 The core module 20 (specifically, the core 22, the first microphone 25 and the second microphone 26) of the middle (right) ear hook assembly 30 also needs to be further connected to the corresponding Figure 1 The battery 60 of the middle (left) ear hook assembly 30 is connected. Therefore, the wire 42 needs to realize the connection of the three circuits mentioned above at least.

[0176] Figure 29 2900 is an exemplary flow chart of a method for manufacturing a rear hanger assembly according to some embodiments of the present application. Based on the above detailed description, the rear hanger assembly 40 of the embodiment of the present application can be manufactured according to the following process flow 2900.

[0177] Step S2910 provides an extrusion molding device and a conductor. On the one hand, the raw material for molding the elastic coating 43 can be added to the extrusion molding device. During the extrusion molding process, the raw material for the elastic coating 43 undergoes at least the following stages: melting and plasticization, extrusion through a die, shaping, cooling, and pulling. On the other hand, the number of conductors 42 can be at least two to facilitate connection between the various electronic components in the bone conduction headset 10. In some embodiments, each conductor 42 can include a metal wire and an insulating layer covering the metal wire to facilitate electrical insulation between the metal wires.

[0178] In step S2920, the wire is placed in an extrusion molding device so that the raw material of the elastic coating and the wire can obtain a corresponding first semi-finished product during the extrusion molding process. The extrusion molding device can pull the wire 42 so that the elastic coating 43 can be coated on the wire 42 during the extrusion molding process. In some embodiments, the head portion of the extrusion molding device can be provided with a core so that during the extrusion molding process, the elastic coating 43 can also form the above-mentioned threading channel inside. Therefore, the above-mentioned first semi-finished product can specifically be an integrated structural component of the elastic coating 43 and the wire 42, and the coating 43 has a threading channel extending generally along its axial direction.

[0179] In step S2930, the first semi-finished product is further cut into second semi-finished products of corresponding lengths according to the use requirements of the rear-hook assembly. The actual length of the second semi-finished product can be slightly longer than the length required for the rear-hook assembly, meaning that the second semi-finished product still has a certain amount of excess material to facilitate subsequent processing steps.

[0180] In step S2940, the elastic metal wire is threaded through the threading channel of the second semi-finished product to produce the back-hook assembly. After step S2940, the back-hook assembly must not only be formed into a curved structure with a specific shape to facilitate its conformity to the back of the user's head, but also undergoes appropriate processing at both ends to facilitate structural fixation with the ear-hook assembly and establish electrical connections between the main control circuit board, battery, buttons, movement, and first and second microphones. Therefore, the back-hook assembly produced in step S2940 is essentially a semi-finished product.

[0181] In the above manner, due to the extrusion molding process, not only can a very long semi-finished product (specifically, it can be an integrated structure of the elastic sheath 43 and the wire 42) be produced at one time, but a wire threading channel extending generally along its axial direction can also be formed inside the sheath 43 at the same time. The semi-finished product is then cut into small segments of corresponding lengths for subsequent processing, thereby effectively improving the production efficiency of the rear suspension assembly.

[0182] The beneficial effects that may be brought about by the embodiments of the present application include but are not limited to: (1) the decorative piece not only decorates the ear hook shell but also has the functions of shielding the wires, shielding the buttons, and triggering the buttons, thus realizing the "four uses" of the decorative piece; (2) the design of the magnet enables the movement modules to be adsorbed to each other when the earphones are not worn, making it easier for the user to store them; (3) the shape, size, and other parameters of the magnet and related components are reasonably set, taking into account the vibration and sound generation of the movement module and the requirements for lightweight. It should be noted that different embodiments may produce different beneficial effects. In different embodiments, the beneficial effects that may be produced may be any one or a combination of the above, or any other possible beneficial effects.

[0183] The basic concepts have been described above. It will be apparent to those skilled in the art that the above disclosures are merely illustrative and do not constitute limitations on this application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and amendments to this application. Such modifications, improvements, and amendments are suggested in this application and remain within the spirit and scope of the exemplary embodiments of this application.

[0184] At the same time, this application uses specific terms to describe the embodiments of this application. For example, "one embodiment," "an embodiment," and / or "some embodiments" refer to a certain feature, structure, or characteristic related to at least one embodiment of this application. Therefore, it should be emphasized and noted that "one embodiment," "an embodiment," or "an alternative embodiment" mentioned twice or multiple times in different locations in this specification does not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of this application may be appropriately combined.

[0185] In addition, it will be understood by those skilled in the art that various aspects of the present application can be illustrated and described by a number of patentable categories or situations, including any new and useful process, machine, product or combination of substances or any new and useful improvements thereto. Accordingly, various aspects of the present application can be performed entirely by hardware, entirely by software (including firmware, resident software, microcode, etc.), or by a combination of hardware and software. The above hardware or software may all be referred to as "data blocks", "modules", "engines", "units", "components" or "systems". In addition, various aspects of the present application may be represented as a computer product located in one or more computer-readable media, which includes computer-readable program code.

[0186] In addition, unless expressly stated in the claims, the order of processing elements and sequences, the use of alphanumeric characters, or the use of other names in this application are not intended to limit the order of the processes and methods of this application. Although the above disclosure discusses some embodiments of the invention that are currently considered useful through various examples, it should be understood that such details are for illustrative purposes only, and the appended claims are not limited to the disclosed embodiments. On the contrary, the claims are intended to cover all modifications and equivalent combinations that are consistent with the essence and scope of the embodiments of this application. For example, although the system components described above can be implemented by hardware devices, they can also be implemented only by software solutions, such as installing the described system on an existing server or mobile device.

[0187] Similarly, it should be noted that, in order to simplify the presentation of this application and thus facilitate understanding of one or more embodiments of the invention, the foregoing descriptions of the embodiments of this application sometimes combine multiple features into a single embodiment, figure, or description thereof. However, this disclosure method does not mean that the subject matter of this application requires more features than those recited in the claims. In fact, an embodiment may have fewer features than all of the features of a single embodiment disclosed above.

[0188] In some embodiments, numbers are used to describe the quantity of components and attributes. It should be understood that such numbers used in the description of the embodiments are modified by modifiers such as "about", "approximately" or "substantially" in some examples. Unless otherwise stated, "about", "approximately" or "substantially" indicate that the numbers are allowed to vary by ±20%. Accordingly, in some embodiments, the numerical data used in the description and claims are approximate values, which may change according to the required features of individual embodiments. In some embodiments, the numerical data should take into account the specified significant digits and adopt the general method of retaining digits. Although the numerical fields and data used to confirm the breadth of their range in some embodiments of the present application are approximate values, in specific embodiments, the settings of such numerical values are as accurate as possible within the feasible range.

Claims

1. A headset, characterized in that: The invention comprises a movement module, wherein the movement module comprises a movement housing and a movement, wherein: The movement housing includes a bottom wall and an annular circumferential wall. When a user wears the earphones, the bottom wall faces the user's head. One end of the annular circumferential wall is integrally connected to the bottom wall. One end of the annular circumferential wall away from the bottom wall is open. The movement is arranged in the movement housing through the opening. The movement includes a magnet and a magnetic cover. The magnet is configured to allow the movement module to be adsorbed on a magnetic object through one side of the bottom wall. The magnetic cover includes a bottom plate and an annular side plate integrally connected to the bottom plate. The magnet is arranged in the annular side plate and fixed to the bottom plate.

2. The earphone according to claim 1, wherein The magnet is a cylinder, the diameter of the magnet is greater than or equal to a first diameter and less than or equal to a second diameter, and the thickness of the magnet is greater than or equal to a first thickness and less than or equal to a second thickness.

3. The earphone according to claim 2, wherein The diameter of the magnet is 10.8 mm, and the thickness of the magnet is 3.5 mm.

4. The earphone according to any one of claims 1 to 3, characterized in that The movement also includes: a magnetic conductive plate, the magnetic conductive plate being fixed on a side of the magnet facing away from the bottom plate; and A coil is disposed in a magnetic gap between the magnet and the annular side plate.

5. The earphone according to claim 4, characterized in that The diameter of the magnetic conductive plate is equal to the diameter of the magnet, and the thickness of the magnetic conductive plate is equal to the thickness of the magnetic conductive cover.

6. The earphone according to claim 5, characterized in that The thickness of the magnetic conductive cover is greater than or equal to the third thickness and less than or equal to the fourth thickness.

7. The earphone according to claim 6, characterized in that The thickness of the magnetic conductive cover is 0.5 mm.

8. The earphone according to claim 4, wherein The height of the annular side plate is greater than or equal to the first height and less than or equal to the second height.

9. The earphone according to claim 8, characterized in that The height of the annular side plate is 3.7 mm.

10. The earphone according to claim 4, characterized in that The movement module further includes a movement bracket, which is arranged in the movement housing, and the coil is fixed on the movement bracket.

11. The earphone according to claim 4, characterized in that The magnetic gap between the magnet and the annular side plate is greater than or equal to the first gap and less than or equal to the second gap.

12. The earphone according to any one of claims 1-3 and 5-11, characterized in that: It also includes an ear hook component, one end of which is connected to the core module.

13. The earphone according to claim 12, wherein: The ear hook assembly includes an ear hook shell, and the ear hook shell includes: A storage compartment, used to accommodate batteries or a main control circuit board; a fixing portion, the fixing portion being covered on the open end of the movement housing to form a cavity for accommodating the movement; and A bending transition portion connects the accommodating compartment and the fixing portion and is arranged in a bending shape so as to be hung on the outside of a human ear.

14. The earphone according to claim 13, wherein The elastic modulus of the core shell is greater than the elastic modulus of the ear hook shell.

15. The earphone according to claim 13 or 14, characterized in that The fixing portion is provided with a reinforcement structure, and the reinforcement structure makes the ratio of the difference between the stiffness of the bottom wall and the stiffness of the fixing portion and the stiffness of the bottom wall less than or equal to a preset ratio threshold.

16. The earphone according to claim 15, characterized in that The reinforcement structure includes reinforcing ribs arranged on the fixing portion.

17. The earphone according to claim 15, characterized in that The reinforcement structure includes a metal part, wherein the reinforcement structure and the earphone fixing part are metal insert injection-molded integrally formed structural parts.

18. The earphone according to any one of claims 13-14, 16-17, characterized in that: The movement module further comprises a cover plate, which is arranged on the opening of the annular peripheral wall of the movement housing, and the fixing portion is arranged on a side of the cover plate facing away from the movement housing.

19. The earphone according to claim 18, wherein The elastic modulus of the cover plate is greater than the elastic modulus of the ear hook shell.

20. The earphone according to claim 18, wherein The elastic modulus of the cover plate is less than or equal to the elastic modulus of the movement housing.

21. The earphone according to any one of claims 13-14, 16-17, 19-20, characterized in that: The ear hook assembly further includes a decorative bracket, wherein: The bending transition portion is provided with a first groove, and the decorative bracket is embedded in and fixed in the first groove to form a wiring channel, thereby allowing the wire to extend from the movement module through the wiring channel to the accommodating compartment.

22. The earphone according to claim 21, wherein The earphone fixing portion is provided with a button adapting hole, and the button adapting hole is communicated with one end of the first groove; and The ear hook assembly further includes a button, which is arranged on the other side of the ear hook shell away from the decorative bracket and is exposed through the button adapting hole.

23. The earphone according to claim 22, characterized in that The decorative bracket extends in a cantilevered manner to above the button exposed through the button adapting hole, and can trigger the button when pressed by an external force.

24. The earphone according to claim 12, wherein There are two movement modules, and the polarities of the magnets of the two movement modules close to the bottom wall of the movement shell are different, so that when the earphones are not worn, the two movement modules can be adsorbed to each other.

25. The earphone according to claim 24, characterized in that There are two ear-hook components, and the headset further includes a rear-hook component for being arranged around the back of the user's head, and two ends of the rear-hook component are respectively connected to the accommodating compartments of the two ear-hook components.

Images