WO2020140454A1 - 一种扬声器装置 - Google Patents

一种扬声器装置 Download PDF

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Publication number
WO2020140454A1
WO2020140454A1 PCT/CN2019/102397 CN2019102397W WO2020140454A1 WO 2020140454 A1 WO2020140454 A1 WO 2020140454A1 CN 2019102397 W CN2019102397 W CN 2019102397W WO 2020140454 A1 WO2020140454 A1 WO 2020140454A1
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WIPO (PCT)
Prior art keywords
magnetic
magnetic element
speaker device
wire
conductive element
Prior art date
Application number
PCT/CN2019/102397
Other languages
English (en)
French (fr)
Inventor
李朝武
李永坚
Original Assignee
深圳市韶音科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳市韶音科技有限公司 filed Critical 深圳市韶音科技有限公司
Publication of WO2020140454A1 publication Critical patent/WO2020140454A1/zh
Priority to US17/137,389 priority Critical patent/US11197084B2/en
Priority to US17/456,892 priority patent/US11632619B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/105—Earpiece supports, e.g. ear hooks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00—Stereophonic arrangements
    • H04R5/033—Headphones for stereophonic communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/023—Screens for loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/026—Supports for loudspeaker casings
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1008—Earpieces of the supra-aural or circum-aural type
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1041—Mechanical or electronic switches, or control elements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1058—Manufacture or assembly
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1091—Details not provided for in groups H04R1/1008 - H04R1/1083
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/44—Special adaptations for subaqueous use, e.g. for hydrophone
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
    • H04R31/006—Interconnection of transducer parts
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/025—Magnetic circuit
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/06—Arranging circuit leads; Relieving strain on circuit leads
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1016—Earpieces of the intra-aural type
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1025—Accumulators or arrangements for charging
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1058—Manufacture or assembly
    • H04R1/1066—Constructional aspects of the interconnection between earpiece and earpiece support
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
    • H04R1/345—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means for loudspeakers
    • H04R1/347—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means for loudspeakers for obtaining a phase-shift between the front and back acoustic wave
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R11/00—Transducers of moving-armature or moving-core type
    • H04R11/02—Loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
    • H04R2201/10—Details of earpieces, attachments therefor, earphones or monophonic headphones covered by H04R1/10 but not provided for in any of its subgroups
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2460/00—Details of hearing devices, i.e. of ear- or headphones covered by H04R1/10 or H04R5/033 but not provided for in any of their subgroups, or of hearing aids covered by H04R25/00 but not provided for in any of its subgroups
    • H04R2460/13—Hearing devices using bone conduction transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00—Stereophonic arrangements
    • H04R5/033—Headphones for stereophonic communication
    • H04R5/0335—Earpiece support, e.g. headbands or neckrests

Definitions

  • the present application relates to a speaker device, and in particular to a speaker device with a waterproof function.
  • earphones are widely used in people's lives. For example, users can use the earphones to play music, answer calls, etc. Earphones have become an important item in people's daily lives. Ordinary earphones can no longer satisfy the normal use of users in some special scenarios (for example, swimming, outdoor rainy days, etc.), and earphones with waterproof functions and better sound quality are more popular with consumers. Therefore, it is necessary to provide a speaker device that has a waterproof function and is convenient for production and assembly.
  • An embodiment of the present specification provides a speaker device, including: an ear hook, including a first plug end and a second plug end, a protection sleeve is wrapped around the ear hook, and the protection sleeve is made of an elastic waterproof material
  • Movement casing which is used for accommodating the earphone core, the movement casing is plugged and fixed with the first plug end, and elastically abuts with the protective sleeve; and the circuit casing is used to accommodate A control circuit or a battery, the circuit housing is plugged and fixed to the second plug end, the control circuit or the battery drives the earphone core to vibrate, and the vibration of the earphone core generates a driving force to drive the movement housing
  • the straight line where the driving force lies is not parallel to the normal line of the shell panel.
  • the earhook further includes: an elastic wire; a wire and a fixing sleeve, the fixing sleeve fixes the wire on the elastic wire; the protective sleeve, which is made of injection molding The method is formed on the periphery of the elastic wire, the wire, the fixing sleeve, the first connector end and the second connector end.
  • first connector end and the second connector end are respectively formed on both ends of the elastic wire by injection molding, and the first connector end and the second connector end are respectively A first routing channel and a second routing channel are provided, and the wires extend along the first routing channel and the second routing channel.
  • the wires are threaded into the first routing channel and the second routing channel.
  • the first routing channel includes a first routing slot and a first routing hole connecting the first routing slot and the outer end surface of the first connector end, The first wiring groove and the first wiring hole extend and are exposed to the outer end surface of the first connector end;
  • the second wiring channel includes a second wiring groove and the second wiring groove With the second wiring hole on the outer end surface of the first connector end, the wire extends along the second wiring slot and the second wiring hole and is exposed on the outer end surface of the second connector end.
  • the fixing sleeves include at least two, and are spaced apart along the elastic wire.
  • the movement housing is provided with a first connector hole communicating with the outer end surface of the movement housing, and a stop block is provided on the inner side wall of the first connector hole.
  • the first jack is connected to the first plug end in a snap connection.
  • the first connector end includes an insertion portion and two elastic hooks.
  • the insertion portion is at least partially inserted into the first socket and abuts against the outer surface of the stop block; the two elastic hooks are provided at the insertion portion toward the movement On one side inside the housing, two elastic hooks can be brought together under the action of external thrust and the stop block, and after passing through the stop block, elastically restored to be stuck in the stop block On the side surface, the insertion and fixing of the movement casing and the first connector end is realized.
  • the insertion portion is partially inserted into the first socket, and the exposed portion of the insertion portion is provided in a step shape to form a spaced apart from the outer end surface of the movement housing Ring table.
  • the protective sleeve further extends to a side of the annular mesa facing the outer end surface of the movement housing, and is inserted into the first insertion end at the movement housing When fixed, it elastically abuts with the movement casing, thereby achieving sealing.
  • the speaker device further includes a fixing member; the circuit housing is provided with a second socket, and the second socket is at least partially inserted into the second socket through the Fixings are plugged in.
  • the second plug end is provided with a slot perpendicular to the insertion direction of the second jack, and the first side wall of the circuit housing is provided with the slot A through hole corresponding to the position;
  • the fixing member includes two pins provided in parallel and a connecting portion for connecting the pins; the pins are inserted into the slot from the outside of the circuit case through the through hole to further realize the plugging and fixing of the circuit housing and the second plug end.
  • the earhook further includes a housing sheath integrally formed with the protective sleeve, and the housing sheath is wrapped around the periphery of the circuit housing in a sleeve manner.
  • the housing panel has a driving connection with the earphone core, and all or part of the housing panel is used to contact or bear against a user's body to conduct sound generated by vibration of the earphone core.
  • the straight line where the driving force is located has a positive direction pointing out of the speaker device through the panel, and if the normal line has a positive direction pointing out of the speaker device, then the two straight lines are sandwiched in the positive direction The angle is acute.
  • the earphone core includes a coil and a magnetic circuit system, the axis of the coil or magnetic circuit system is not parallel to the normal; the axis is perpendicular to the radial plane of the coil and/or the radial plane of the magnetic circuit system .
  • the driving force has a component in the first quadrant and/or the third quadrant of the XOY plane coordinate system; wherein the origin O of the XOY plane coordinate system is located on the contact surface of the speaker device and the human body, and the X axis is The coronal axis of the human body is parallel, the Y axis is parallel to the sagittal axis of the human body, and the positive direction of the X axis is toward the outside of the human body, and the positive direction of the Y axis is toward the front of the human body.
  • the area on the housing panel for contacting or abutting the user's body includes a flat surface or a quasi-flat surface.
  • the earphone core further includes a magnetic circuit assembly that generates a first magnetic field
  • the magnetic circuit assembly includes: a first magnetic element that generates a second magnetic field; A magnetically conductive element; and at least one second magnetic element, the at least one second magnetic element surrounds the first magnetic element and forms a magnetic gap with the first magnetic element, the first magnetic field
  • the magnetic field strength in the magnetic gap is greater than the magnetic field strength of the second magnetic field in the magnetic gap.
  • the magnetic circuit assembly further includes: a second magnetic conductive element; and at least one third magnetic element, wherein the at least one third magnetic element connects the second magnetic conductive element and the at least one A second magnetic element.
  • the magnetic circuit assembly further includes: at least one fourth magnetic element, wherein the at least one fourth magnetic element is located below the magnetic gap and connects the first magnetic element and the first magnetic element Two magnetic components.
  • the magnetic circuit assembly further includes: at least one fifth magnetic element, wherein the at least one fifth magnetic element is connected to the upper surface of the first magnetic conductive element.
  • the magnetic circuit assembly further includes: a third magnetically conductive element, wherein the third magnetically conductive element is connected to the upper surface of the fifth magnetic element, and the third magnetically conductive element is configured as The leakage of the field strength of the first magnetic field is suppressed.
  • the first magnetic conductive element is connected to the upper surface of the first magnetic element
  • the second magnetic conductive element includes a bottom plate and a side wall
  • the first magnetic element is connected to the second magnetic guide The bottom plate of the magnetic element.
  • the magnetic circuit assembly further includes: at least one conductive element, wherein the conductive element is connected to the first magnetic element, the first magnetic conductive element, or the second magnetic conductive element At least one element.
  • Figure 1 is the process of the speaker device causing the human ear to produce hearing
  • FIG. 2 is a schematic diagram of an explosion structure of an MP3 player according to some embodiments of the present application.
  • FIG. 3 is a schematic diagram of a partial structure of an ear hook in an MP3 player according to some embodiments of the present application.
  • FIG. 4 is a partial enlarged view of part A in FIG. 3;
  • FIG. 5 is a partial cross-sectional view of an MP3 player provided according to some embodiments of the present application.
  • FIG. 6 is a partial enlarged view of part B in FIG. 5;
  • FIG. 7 is a partial structural diagram of a movement housing provided according to some embodiments of the present application.
  • FIG. 8 is a partial enlarged view of part D in FIG. 7;
  • FIG. 9 is a partial cross-sectional view of a movement housing provided according to some embodiments of the present application.
  • FIG. 10 is a schematic diagram of an application scenario and a structure of a bone conduction speaker device provided by some embodiments of the present application;
  • FIG. 11 is a schematic diagram of an included angle direction provided by some embodiments of the present application.
  • FIG. 12 is a schematic structural view of a bone conduction speaker provided by some embodiments of the present application acting on human skin and bones;
  • FIG. 13 is an angle-relative displacement relationship diagram of a bone conduction speaker according to some embodiments of the present application.
  • FIG. 14 is a schematic diagram of the low-frequency part of the frequency response curve of the bone conduction speaker according to different included angles ⁇ provided by the present application;
  • FIG. 15 is a schematic longitudinal cross-sectional view of a bone conduction speaker according to some embodiments of the present application.
  • 16 is a schematic longitudinal cross-sectional view of a magnetic circuit assembly 2100 according to some embodiments of the present application.
  • FIG. 17 is a schematic longitudinal cross-sectional view of a magnetic circuit assembly 2600 according to some embodiments of the present application.
  • FIG. 18 is a schematic longitudinal cross-sectional view of a magnetic circuit assembly 2700 according to some embodiments of the present application.
  • FIG. 19 is a schematic longitudinal cross-sectional view of a magnetic circuit assembly 2900 according to some embodiments of the present application.
  • FIG. 20 is a schematic longitudinal cross-sectional view of a magnetic circuit assembly 3000 according to some embodiments of the present application.
  • 21 is a schematic longitudinal cross-sectional view of a magnetic circuit assembly 3100 according to some embodiments of the present application.
  • FIG. 22 is a schematic diagram of transmitting sound through air conduction according to some embodiments of the present application.
  • the speaker incorporates ambient sound pickup and processing functions to enable the speaker to function as a hearing aid.
  • a microphone such as a microphone that can pick up the sound of the surrounding environment of the user/wearer is added, and after a certain algorithm, the sound is processed (or the generated electrical signal) is transmitted to the bone conduction speaker section.
  • the bone conduction speaker can be modified to include the function of picking up environmental sounds, and after certain signal processing, the sound is transmitted to the user/wearer through the bone conduction speaker part, thereby realizing the function of the bone conduction hearing aid.
  • the algorithms described here may include noise cancellation, automatic gain control, acoustic feedback suppression, wide dynamic range compression, active environment recognition, active anti-noise, directional processing, tinnitus processing, multi-channel wide dynamic range compression, active howling One or more combinations of suppression and volume control.
  • Fig. 1 is a process in which the speaker device causes hearing in the human ear.
  • the speaker device can transmit sound to the hearing system through bone conduction or air conduction through its own speaker, thereby generating hearing.
  • the process of the speaker device making the human ear produce hearing mainly includes the following steps:
  • the speaker device may acquire or generate a signal containing sound information.
  • the sound information may refer to a video or audio file with a specific data format, or it may refer to a data or file that can generally be converted into sound through a specific channel in a general sense.
  • the signal containing sound information may come from the storage unit of the speaker device itself, or may come from an information generation, storage, or transmission system other than the speaker device.
  • the sound signals discussed here are not limited to electrical signals, but may include other forms such as optical signals, magnetic signals, mechanical signals, etc. in addition to electrical signals. In principle, as long as the signal contains information that the speaker device can use to generate sound, it can be processed as a sound signal.
  • the sound signal is not limited to one signal source, and may come from multiple signal sources. These multiple signal sources may or may not be related.
  • the sound signal transmission or generation method may be wired or wireless, and may be real-time or delayed.
  • the speaker device may receive electrical signals containing sound information in a wired or wireless manner, or it may directly obtain data from a storage medium to generate sound signals.
  • a component with sound collection function can be added to the bone conduction speaker. By picking up the sound in the environment, the mechanical vibration of the sound is converted into an electrical signal, which is processed by the amplifier to obtain electricity that meets specific requirements. signal.
  • wired connection includes but is not limited to the use of metal cables, optical cables or mixed metal and optical cables, such as: coaxial cables, communication cables, flexible cables, spiral cables, non-metallic sheathed cables, metal sheathed cables, multi Core cable, twisted-pair cable, ribbon cable, shielded cable, telecommunications cable, double-stranded cable, parallel twin-core conductor, and twisted pair.
  • metal cables such as: coaxial cables, communication cables, flexible cables, spiral cables, non-metallic sheathed cables, metal sheathed cables, multi Core cable, twisted-pair cable, ribbon cable, shielded cable, telecommunications cable, double-stranded cable, parallel twin-core conductor, and twisted pair.
  • the examples described above are for illustrative purposes only, and the wired connection medium may also be other types of transmission carriers, such as other electrical signals or optical signals.
  • Storage devices include storage devices on storage systems such as Direct Attached Storage (Direct Attached Storage), Network Attached Storage (Network Attached Storage), and Storage Area Network (Storage Area Network).
  • Storage devices include but are not limited to common types of storage devices such as solid-state storage devices (solid-state hard drives, solid-state hybrid hard drives, etc.), mechanical hard drives, USB flash drives, memory sticks, memory cards (such as CF, SD, etc.), other drives (such as CD , DVD, HD DVD, Blu-ray, etc.), random access memory (RAM) and read-only memory (ROM).
  • RAMs include but are not limited to: Decimal Counter, Selector, Delay Line Memory, Williams Tube, Dynamic Random Access Memory (DRAM), Static Random Access Memory (SRAM), Thyristor Random Access Memory (T-RAM), and Zero Capacitive random access memory (Z-RAM), etc.
  • ROM includes but is not limited to: magnetic bubble memory, magnetic button wire memory, thin film memory, magnetic plated wire memory, magnetic core memory, drum memory, optical disk drive, hard disk, magnetic tape, early stage NVRAM (non-volatile memory), phase change memory, magnetoresistive random storage memory, ferroelectric random storage memory, non-volatile SRAM, flash memory, electronic erasable rewritable read-only memory, erasable programmable read-only Memory, programmable read-only memory, shielded stack read memory, floating connection gate random access memory, nano random access memory, track memory, variable resistance memory, programmable metallization unit, etc.
  • the storage devices/storage units mentioned above are some examples, and the storage devices that the storage
  • the speaker device may convert a signal containing sound information into vibration and generate sound.
  • the generation of vibration is accompanied by the conversion of energy.
  • the speaker device can use a specific transducer to convert the signal into mechanical vibration.
  • the conversion process may involve the coexistence and conversion of many different types of energy.
  • the electrical signal can be directly converted into mechanical vibration through the transducer to generate sound.
  • the sound information is included in the optical signal, and a specific transducing device can realize the process of converting the optical signal into the vibration signal.
  • Other types of energy that can coexist and convert during the operation of the transducer include thermal energy, magnetic field energy, and so on.
  • the energy conversion means of the transducing device include, but are not limited to, moving coil type, electrostatic type, piezoelectric type, moving iron type, pneumatic type, electromagnetic type, and the like.
  • the frequency response range and sound quality of the speaker device will be affected by different transduction methods and the performance of each physical component in the transduction device.
  • the wound cylindrical coil is connected to a vibrating plate, and the coil driven by the signal current drives the vibrating plate to vibrate and sound in the magnetic field.
  • the expansion and contraction of the vibrating plate material, the deformation, size, and shape of the fold As well as the fixing method, the magnetic density of the permanent magnet, etc. will have a great influence on the final sound quality of the speaker device.
  • sound quality can be understood to reflect the quality of sound, and refers to the fidelity of audio after processing, transmission, and other processes.
  • the sound quality usually contains several aspects, including the intensity and amplitude of the audio, the frequency of the audio, the overtone or harmonic content of the audio, and so on.
  • measurement methods and evaluation criteria for objectively evaluating sound quality, as well as methods for evaluating various attributes of sound quality by combining different elements of sound and subjective feelings. Therefore, the process of sound generation, transmission and reception will affect the sound to a certain extent Sound quality.
  • the sound is transmitted through the transmission system.
  • the delivery system refers to a substance that can deliver a vibration signal containing sound information, for example, the skull of a human or/and an animal with a hearing system, a bone labyrinth, an inner ear lymph fluid, and a screw.
  • a medium that can transmit sound eg, air, liquid.
  • a bone conduction speaker is taken as an example.
  • the bone conduction speaker can directly transmit sound waves (vibration signals) converted from electrical signals to the hearing center through the bone.
  • sound waves can also be transmitted to the auditory center through air conduction.
  • air conduction please refer to the specific descriptions elsewhere in this manual.
  • the sound information is transferred to the sensor terminal. Specifically, the sound information is transmitted to the sensing terminal through the transmission system.
  • the speaker device picks up or generates a signal containing sound information, converts the sound information into sound vibration through the transducing device, and transmits the sound to the sensing terminal through the transmission system, and finally hears the sound.
  • the subject of the above-described sensing terminal, hearing system, sensory organ, etc. may be a human or an animal with a hearing system. It should be noted that the following description of the use of the speaker device by humans does not constitute a limitation on the usage scenarios of the speaker device, and similar descriptions can also be applied to other animals.
  • the speaker device in the specification of this application may include, but is not limited to, headphones, MP3 players, and hearing aids.
  • an MP3 player is used as an example to describe the speaker device in detail.
  • 2 is a schematic diagram of an explosion structure of an MP3 player according to some embodiments of the present application
  • FIG. 3 is a schematic diagram of a partial structure of an ear hook in an MP3 player according to some embodiments of the present application
  • FIG. 4 is a part A of FIG. 3 Partially enlarged view. As shown in FIG.
  • the MP3 player may include an ear hanger 10, a movement housing 20, a circuit housing 30, a rear hanger 40, an earphone core 50, a control circuit 60, and a battery 70.
  • the movement casing 20 and the circuit casing 30 are respectively disposed at both ends of the earhook 10, and the rear hanger 40 is further disposed at the end of the circuit casing 30 away from the earhook 10.
  • the number of the movement housing 20 is two, which are used to accommodate the earphone core 50 respectively, and the number of the circuit housing 30 is also two, which are respectively used to accommodate the control circuit 60 and the battery 70. ⁇ 30 ⁇ The circuit housing 30.
  • the earhook 10 refers to a structure for surrounding and supporting the root of the user's ear when the user wears the bone conduction MP3 player, and then suspending and fixing the movement casing 20 and the headphone core 50 at a predetermined position of the user's ear.
  • the earhook 10 includes an elastic metal wire 11, a wire 12, a fixing sleeve 13, and a plug end 14 and a plug end 15 provided at both ends of the elastic metal wire 11 .
  • the earhook 10 may further include a protective sleeve 16 and a casing sheath 17 integrally formed with the protective sleeve 16.
  • the elastic wire 11 is mainly used to keep the ear hook 10 in a shape matching the user's ear, and has a certain elasticity, so that when the user wears it, a certain elastic deformation can be generated according to the user's ear shape and head shape to adapt Users with different ear shapes and head shapes.
  • the elastic metal wire 11 may be made of a memory alloy, which has good deformation recovery ability, so that even if the earhook 10 is deformed by external force, it can still be restored to its original shape when the external force is removed. Continue to be used by users, thereby extending the life of MP3 players.
  • the elastic wire 11 may also be made of non-memory alloy.
  • the wire 12 can be used for electrical connection with the earphone core 50 and the control circuit 60, the battery 70, etc., to provide power supply and data transmission for the operation of the earphone core 50.
  • the fixing sleeve 13 is used to fix the wire 12 on the elastic wire 11.
  • the at least two fixing sleeves 13 can be spaced apart along the direction of the elastic wire 11 and the wire 12, and are arranged around the wire 12 and the elastic wire 11 by wrapping The wire 12 is fixed on the elastic wire 11.
  • the plug end 14 and the plug end 15 may be made of hard materials, such as plastic. In some embodiments, when the connector end 14 and the connector end 15 are manufactured, they can be formed on both ends of the elastic wire 11 by injection molding, respectively. In some embodiments, the connector end 14 and the connector end 15 may be separately injection molded, and the connection holes with the ends of the elastic wire 11 are separately reserved during injection, so that after the injection is completed, the connection holes The plug end 14 and the plug end 15 may be plugged into the corresponding ends of the elastic wire 11 respectively, or may be fixed by bonding.
  • the connector end 14 and the connector end 15 may not be directly formed on the periphery of the wire 12, but avoid the wire 12 during injection.
  • the wires 12 located at both ends of the elastic wire 11 can be fixed to be away from the positions of the connector end 14 and the connector end 15, and further at the connector end 14 and the connector 15 are respectively provided with a first routing channel 141 and a second routing channel 151, so that after the injection molding is completed, the wire 12 is extended along the first routing channel 141 and the second routing channel 151.
  • the wires 12 may be threaded into the first routing channel 141 and the second routing channel 151.
  • the connector end 14 and the connector end 15 may be directly molded on the periphery of the wire 12 according to actual conditions, which is not specifically limited herein.
  • the first routing channel 141 may include a first routing slot 1411 and a first routing hole 1412 communicating with the first routing slot 1411.
  • the first wiring groove 1411 communicates with the side wall surface of the plug end 14
  • one end of the first wiring hole 1412 communicates with one end of the first wiring groove 1411
  • the other end communicates with the outer end surface of the plug end 14.
  • the wire 12 at the connector end 14 extends along the first wire groove 1411 and the first wire hole 1412 and is exposed to the outer end surface of the connector end 14 for further connection with other structures.
  • the second routing channel 151 may include a second routing slot 1511 and a second routing hole 1512 communicating with the second routing slot 1511.
  • the second wiring groove 1511 communicates with the side wall surface of the plug end 15
  • one end of the second wiring hole 1512 communicates with one end of the second wiring groove 1511
  • the other end communicates with the outer end surface of the plug end 15.
  • the wire 12 at the connector end 15 extends along the second wire groove 1511 and the second wire hole 1512 and is exposed to the outer end surface of the connector end 15 for further connection with other structures.
  • the outer end surface of the plug end 14 refers to the end surface of the plug end 14 away from the plug end 15; accordingly, the outer end surface of the plug end 15 refers to the plug end 15 away from the plug end 14 End face of one end.
  • the protective sleeve 16 may be formed on the periphery of the elastic wire 11, the conductive wire 12, the fixed sleeve 13, the plug end 14 and the plug end 15, so as to separate the protective sleeve 16 from the elastic wire 11.
  • the wire 12, the fixed sleeve 13, the plug end 14 and the plug end 15 are fixedly connected without the need to separately inject the protective sleeve 16 into the elastic metal wire 11 and the plug end 14 and the plug end
  • the outer periphery of 15 can simplify the manufacturing and assembly process, and in this way, the fixing of the protective sleeve 16 can be made more reliable and stable.
  • a housing sheath 17 disposed on the side close to the connector end 15 is integrally formed with the protective sleeve 16 at the same time.
  • the housing sheath 17 can be integrally formed with the protective sleeve 16 to form a whole, and the circuit housing 30 can be connected and disposed at one end of the earhook 10 by plugging and fixing with the connector end 15.
  • the body sheath 17 can be further wrapped around the outer periphery of the circuit housing 30 in a sleeve manner.
  • the following steps may be implemented:
  • Step S101 Fix the conductive wire 12 on the elastic metal wire 11 by using the fixing sleeve 13, wherein injection molding positions are reserved at both ends of the elastic metal wire 11.
  • the elastic metal wire 11 and the wire 12 may be placed together in a preset manner, such as side by side, and then, the fixing sleeve 13 is further sleeved on the outer periphery of the wire 12 and the elastic metal wire 11, thereby connecting the wire 12 It is fixed on the elastic wire 11.
  • Step S102 the connector 14 and the connector 15 are respectively injection-molded on the injection positions of the two ends of the elastic metal wire 11, wherein the connector 14 and the connector 15 are respectively provided with a first routing channel 141 and a second routing Channel 151.
  • Step S103 The wire 12 is arranged to extend along the first routing channel 141 and the second routing channel 151. Specifically, here, after the forming of the plug end 14 and the plug end 15 is completed, the two ends of the wire 12 may be further penetrated into the first routing channel 141 and the second routing channel 151 by hand or by a machine, respectively. Wherein, the portion of the wire 12 between the first routing channel 141 and the second routing channel 151 is fixed to the elastic wire 11 by the fixing sleeve 13.
  • Step S104 forming a protective sleeve 16 on the periphery of the elastic metal wire 11, the conductive wire 12, the fixed sleeve 13, the connector end 14 and the connector end 15.
  • a housing sheath 17 integrally formed with the protective sleeve 16 around the connector end 15 is further formed by injection molding.
  • the wire 12 may not be provided when the fixing sleeve 13 is installed, and the wire 12 may be further provided after the connector 14 and the connector 15 are injection molded.
  • the specific steps are as follows:
  • Step S201 the fixing sleeve 13 is sleeved on the elastic metal wire 11, wherein injection molding positions are reserved at both ends of the elastic metal wire 11.
  • Step S202 the connector 14 and the connector 15 are respectively injection-molded on the injection positions of the two ends of the elastic metal wire 11, wherein the connector 14 and the connector 15 are respectively provided with a first routing channel 141 and a second routing Channel 151.
  • Step S203 Passing the wire 12 inside the fixing sleeve 13 to fix the wire 12 on the elastic wire 11 by using the fixing sleeve 13 and further setting the wire 12 along the first routing channel 141 and the second The routing channel 151 extends.
  • the movement housing 20 can be used to receive the earphone core 50 and be fixed to the plug end 14.
  • the number of the earphone core 50 and the movement shell 20 are two, respectively corresponding to the left ear and the right ear of the user.
  • the movement housing 20 may be connected to the plug end 14 by plugging, snapping, or the like to fix the movement housing 20 and the earhook 10 together. That is to say, in this embodiment, the earhook 10 and the movement housing 20 can be formed separately first, and then further assembled together instead of directly forming the two together.
  • the ear hook 10 and the movement housing 20 can be separately molded using their respective molds, without using the same larger-sized mold to integrally form the two, thereby reducing the size of the mold to reduce Difficulty in processing the mold and difficulty in forming;
  • the earloop 10 and the movement housing 20 are processed by different molds, during the manufacturing process, either the earloop 10 or the movement housing 20 needs to be processed.
  • the shape or structure only the mold corresponding to the structure needs to be adjusted without adjusting the mold of another structure, so that the production cost can be reduced.
  • the earhook 10 and the movement housing 20 can also be obtained by integral molding according to circumstances.
  • the movement housing 20 is provided with a socket 22 communicating with the outer end surface 21 of the movement housing 20.
  • the outer end surface 21 of the movement housing 20 refers to the end surface of the movement housing 20 facing the earhook 10.
  • the socket 22 is used to provide a receiving space for the insertion end 14 of the earhook 10 to be inserted into the movement housing 20, so as to further realize the insertion and fixing of the insertion end 14 and the movement housing 20.
  • FIG. 5 is a partial cross-sectional view of an MP3 player according to some embodiments of the present application;
  • FIG. 6 is a partial enlarged view of part B in FIG. 5.
  • the plug end 14 may include an insertion portion 142 and two elastic hooks 143.
  • the insertion portion 142 is at least partially inserted into the socket 22 and abuts the outer surface 231 of the stopper 23.
  • the shape of the outer side wall of the insertion portion 142 matches the shape of the inner side wall of the socket 22, so that when the insertion portion 142 is at least partially inserted into the socket 22, the outer side wall of the insertion portion 142 and the socket 22 The inner wall of the abutment.
  • the outer side surface 231 of the stop block 23 refers to a side surface of the stop block 23 that is disposed toward the ear hook 10.
  • the insertion portion 142 may further include an end surface 1421 facing the movement housing 20.
  • the end surface 1421 may match the outer side surface 231 of the stopper 23 so that when the insertion portion 142 is at least partially inserted into the socket 22, the insertion portion The end surface 1421 of 142 is in contact with the outer surface 231 of the stopper 23.
  • the two elastic hooks 143 may be arranged side by side and spaced perpendicular to the insertion direction and symmetrically disposed on the side of the insertion portion 142 facing the interior of the movement housing 20.
  • Each elastic hook 143 may include a beam portion 1431 and a hook portion 1432 respectively.
  • the beam portion 1431 and the insertion portion 142 are connected to a side of the movement housing 20.
  • the hook portion 1432 is disposed on the beam portion 1431 away from the insertion portion 142 One end and extend perpendicular to the insertion direction.
  • each hook portion 1432 is provided with a transition slope 14321 that connects the side surface parallel to the insertion direction and the end surface remote from the insertion portion 142.
  • the insertion portion 142 is partially inserted into the socket 22, and the exposed portion of the insertion portion 142 is provided in a stepped shape, thereby forming and An annular mesa 1422 provided at an interval on the outer end surface 21 of the movement housing 20.
  • the exposed portion of the insertion portion 142 refers to a portion where the insertion portion 142 is exposed from the movement case 20, and specifically, may refer to a portion exposed from the movement case 20 and close to the outer end surface of the movement case 20.
  • the ring-shaped mesa 1422 may be disposed opposite to the outer end surface 21 of the movement housing 20, and the interval between the two may refer to the interval along the insertion direction and the interval perpendicular to the insertion direction.
  • the protective sleeve 16 may extend to the side of the annular mesa 1422 facing the outer end surface 21 of the movement housing 20, and is fixedly connected to the socket 22 of the movement housing 20 and the plug end 14 When filled in the space between the ring-shaped mesa 1422 and the outer end surface 21 of the movement housing 20 and elastically abuts the movement housing 20, making it difficult for external liquid to pass from the connector end 14 to the movement housing 20
  • the joint between the two enters the interior of the movement casing 20, thereby achieving the sealing between the plug end 14 and the jack 22, so as to protect the headphone core 50 and the like inside the movement casing 20, which can improve the bone conduction MP3
  • the waterproof effect of the player may extend to the side of the annular mesa 1422 facing the outer end surface 21 of the movement housing 20, and is fixedly connected to the socket 22 of the movement housing 20 and the plug end 14 When filled in the space between the ring-shaped mesa 1422 and the outer end surface 21 of the movement housing 20 and elastically abuts
  • the protective sleeve 16 forms an annular abutment surface 161 on the side of the annular mesa 1422 toward the outer end surface 21 of the movement housing 20.
  • the annular contact surface 161 is the end surface of the protection sleeve 16 facing the movement housing 20 side.
  • the ring-shaped mesa 1422 may be disposed opposite to the outer end surface 21 of the movement housing 20, and the interval between the two may refer to the interval along the insertion direction and the interval perpendicular to the insertion direction.
  • the protective sleeve 16 extends to the side of the annular mesa 1422 facing the outer end surface 21 of the movement housing 20, and is filled in when the jack 22 of the movement housing 20 is fixed to the insertion end 14
  • the annular mesa 1422 and the outer end surface 21 of the movement case 20 are elastically abutted with the movement case 20, thereby making it difficult for external liquid to join from the connector end 14 to the movement case 20 Into the interior of the movement casing 20, thereby achieving the sealing between the plug end 14 and the jack 22, to protect the headphone core 50 inside the movement casing 20, etc., thereby improving the waterproofness of the bone conduction MP3 player effect.
  • the protective sleeve 16 forms an annular abutment surface 161 on the side of the annular mesa 1422 facing the outer end surface of the movement housing 20.
  • the annular contact surface 161 is the end surface of the protection sleeve 16 facing the movement housing 20 side.
  • the protective sleeve 16 may further include an annular boss 162 that is located inside the annular abutment surface 161 and protrudes from the annular abutment surface 161.
  • the annular boss 162 is specifically formed on the side of the annular abutment surface 161 facing the plug end 14, and protrudes from the annular abutment surface 161 in the direction toward the movement housing 20.
  • the annular boss 162 can also be directly formed on the periphery of the annular mesa 1422 and cover the annular mesa 1422.
  • the movement housing 20 may include a connection slope 24 for connecting the outer end surface 21 of the movement housing 20 and the inner side wall of the socket 22.
  • the connection slope 24 is specifically a transition surface between the outer end surface 21 of the movement housing 20 and the inner side wall of the socket 22.
  • the connection slope 24 and the outer end surface 21 of the movement housing 20 and the inner side of the socket 22 The walls are not on the same plane.
  • the connecting slope 24 may be a flat surface, or it may be a curved surface or other shapes according to actual requirements, which is not specifically limited herein.
  • the annular abutment surface 161 and the annular boss 162 elastically abut the outer end surface of the movement housing 20 and the connection inclined surface 24, respectively.
  • the elastic abutment between the protective sleeve 16 and the movement housing 20 is not on the same plane, thereby It makes it difficult for external liquid to enter the movement housing 20 from the protective sleeve 16 and the movement housing 20 to further enter the earphone core 50, so that the waterproof effect of the MP3 player can be improved to protect the internal functional structure, This will extend the life of the MP3 player.
  • the insertion portion 142 is further formed on the side of the annular mesa 1422 facing the outer end surface 21 of the movement housing 20 with an annular groove 1423 adjacent to the annular mesa 1422, wherein the annular boss 162 may be formed in the annular shape In the groove 1423.
  • the end of the wire 12 of the earhook 10 located outside the movement housing 20 can pass through the second routing channel 151 to further connect the control circuit 60, battery 70, etc. contained in the circuit housing 30
  • the other end of the external circuit outside the core case 20 is exposed to the outer end surface of the connector 14 along the first routing channel 141, and further enters the interior of the movement case 20 through the socket 22 with the insertion part 142 .
  • FIG. 7 is a schematic view of a partial structure of a movement case provided according to some embodiments of the present application
  • FIG. 8 is a partially enlarged view of part D in FIG. 7
  • FIG. 9 is a partial view of a movement case provided according to some embodiments of the present application. Sectional view.
  • the movement housing 20 may include a main housing 25 and a partition assembly 26.
  • the partition assembly 26 is located inside the main housing 25 and is connected to the main housing 25, thereby dividing the internal space 27 of the main housing 25 into a first accommodating space 271 and a second side near the socket 22 ⁇ 272.
  • the main housing 25 may include a peripheral side wall 251 and a bottom end wall 252 connected to an end surface of the peripheral side wall 251. The peripheral side wall 251 and the bottom end wall 252 together form a main housing 25. Internal space 27.
  • the partition assembly 26 is located on the side of the main housing 25 close to the receptacle 22 and includes a side partition 261 and a bottom partition 262.
  • the side partition 261 may be disposed in a direction perpendicular to the bottom end wall 252, and both ends of the side partition 261 are connected to the peripheral side wall 251, thereby partitioning the internal space 27 of the main housing 25.
  • the bottom baffle 262 may be parallel to or nearly parallel to the bottom end wall 252 and spaced apart, and further connected to the peripheral side wall 251 and the side baffle 261, respectively, thereby dividing the internal space 27 formed by the main housing 25 into two A first accommodating space 271 surrounded by the side partition 261, the bottom partition 262 and the peripheral side wall 251 and the bottom end wall 252 away from the connecting hole 22 is formed, and the bottom partition 262 and the side partition 261 and The second accommodating space 272 formed by the peripheral side wall 251 adjacent to the socket 22 is enclosed together.
  • the second accommodating space 272 may be smaller than the first accommodating space 271.
  • the partition assembly 26 can also divide the internal space 27 of the main housing 25 by other installation methods, which is not specifically limited here.
  • the earphone core includes a functional component 51 that is disposed in the first accommodating space 271 and can be used to vibrate and sound.
  • the MP3 player may further include a wire 80 connected to the functional component 51. The other end of the wire 80 may extend from the first accommodating space 271 into the second accommodating space 272.
  • the side partition 261 may be provided with a wire groove 2611 at the top edge away from the bottom end wall 252, and the wire groove 2611 may communicate with the first accommodating space 271 and the second accommodating space 272. Further, the end of the conductive wire 12 away from the functional component extends into the second accommodating space 272 through the wiring groove.
  • the functional component 51 is electrically connected to the external circuit outside the movement case 20 through the wire path.
  • the bottom baffle 262 may further be provided with a wiring hole 2621 that connects the socket 22 to the second accommodating space 272 so that the socket 22 enters the movement case
  • the wire 12 of the body 20 can extend to the second accommodating space 272 through the wiring hole 2621.
  • the wires 12 and the wires 80 are connected in the second accommodating space 272, they are coiled and arranged in the second accommodating space 272.
  • the wire 12 and the wire 80 can be connected together by welding, and then the functional component 51 is electrically connected to an external circuit, so as to provide power for the normal operation of the functional component 51 or transmit data for the earphone core 50 through the external circuit.
  • the wires will often be longer than the actual needs to facilitate the assembly.
  • the extra wires at the earphone core 50 cannot be placed reasonably, it is easy to generate vibration and abnormal sound when the functional component 51 is working, thereby reducing the sound quality of the bone conduction MP3 player, thereby affecting the user's listening experience.
  • the second accommodating space 272 is separated from the internal space 27 formed by the main housing 25 of the movement housing 20 for accommodating the extra wire 12 and the wire 80, so as to avoid or reduce the extra The influence of the wire on the sound emitted by the bone conduction MP3 player due to vibration to improve the sound quality.
  • the partition assembly 26 further includes an inner partition 263 that further divides the second receiving space 272 into two sub-receiving spaces 2721.
  • the inner partition 263 is disposed perpendicular to the bottom end wall 252 of the main housing 25, respectively connected to the side partition 261 and the peripheral side wall 251, and further extends to the routing hole 2621, so that While the housing space 272 is divided into two sub-housing spaces 2721, the wiring hole 2621 is further divided into two, and the two wiring holes 2621 can respectively communicate with the corresponding sub-housing spaces 2721.
  • the conductive wires 12 and the conductive wires 80 can be two respectively.
  • the two conductive wires 12 separately extend into the respective sub-accommodating spaces 2721 along the corresponding routing holes 2621, while the two conductive wires 80 are still together. Enter the second accommodating space 272 through the wire trough 2611, and separate after entering the second accommodating space 272, and weld the corresponding wires 12 in the corresponding sub-accommodating spaces 2721, and further coiled Within the corresponding sub-accommodation space 2721.
  • the second receiving space 272 may be further filled with sealant.
  • the wire 12 and the wire 80 accommodated in the second accommodating space 272 can be further fixed to further reduce the adverse effect on sound quality caused by the vibration of the wire, thereby improving the sound of the bone conduction MP3 player At the same time, it can protect the welding point between the wire 12 and the wire 80.
  • sealing the second accommodating space 272 can also achieve the purpose of waterproof and dustproof.
  • the circuit housing 30 is plugged and fixed to the plug end 15, thereby fixing the circuit housing 30 at the end of the earhook 10 away from the movement housing 20.
  • the circuit case 30 containing the battery 70 and the circuit case 30 containing the control circuit 60 may correspond to the left and right sides of the user, respectively, and the two are connected to the corresponding connector 15 The way can be different.
  • the circuit housing 30 may be connected to the plug end 15 by means of plug connection, snap connection, or the like. That is to say, in this embodiment, the earhook 10 and the circuit case 30 can be separately molded first, and then assembled together after the molding is completed, instead of directly molding the two together.
  • the ear hook 10 and the circuit case 30 can be separately molded using their respective molds, without using the same larger-sized mold to integrally form the two, thereby reducing the size of the molding mold to reduce Difficulty in processing the mold and difficulty in forming;
  • the shape of the earloop 10 or the circuit case 30 needs to be shaped. Or when the structure is adjusted, only the mold corresponding to the structure needs to be adjusted without adjusting the mold of another structure, so that the production cost can be reduced.
  • the circuit housing 30 is provided with a socket 31, the shape of the inner surface of the socket 31 can match the shape of at least part of the outer surface of the connector 15, so that the connector 15 can at least Partially inserted into the jack 31.
  • slots 152 are perpendicular to the insertion direction of the plug end 15 relative to the insertion hole 31.
  • the two slots 152 are symmetrically and spaced apart on opposite sides of the plug end 15, and both communicate with the side wall of the plug end 15 in a vertical direction along the insertion direction.
  • the circuit housing 30 may be provided in a flat shape.
  • the cross-section of the circuit housing 30 at the second socket 31 may be elliptical, or other shapes capable of being provided in a flat shape.
  • two opposing side walls with a larger area of the circuit housing 30 are the main side walls 33, and a smaller area connecting the two main side walls 33 and the two opposite side walls are the auxiliary sides ⁇ 34 ⁇ Wall 34.
  • the number of fixed sleeves 13 is not limited to at least two described in the above embodiments, and the number may be one, which may be determined according to actual needs.
  • the shape of the cross section at the socket 31 is not limited to an ellipse, but may be other shapes, such as a triangle, a quadrangle, a pentagon, and other polygons. Such deformations are within the scope of protection of this application.
  • the bone conduction speaker may include a driving device 1001, a transmission assembly 1002, and a panel 1003 (the panel 1003 may also be referred to as an enclosure panel, which is a panel on the movement housing 20 facing the human body side ), and housing 1004.
  • the housing 1004 may include a housing back and a housing side, and the panel 1003 is connected to the panel 1003 through the housing back through the housing back.
  • the driving device 1001 may transmit the vibration signal to the panel 1003 and/or the casing 1004 through the transmission assembly 1002, so as to transmit the sound to the human body through contact with the panel 1003 or the casing 1004 and the human skin.
  • the panel 1003 and/or the housing 1004 of the bone conduction speaker may be in contact with human skin at the tragus, thereby transmitting sound to the human body.
  • the panel 1003 and/or the housing 1004 may also be in contact with human skin on the back side of the auricle.
  • the driving force generated by the driving device 1001 lies on a straight line B (or the vibration direction of the driving device), which has an angle ⁇ with the normal A of the panel 1003.
  • line B is not parallel to line A.
  • the panel has an area that contacts or abuts the user's body, such as human skin. It should be understood that when the panel is covered with other materials (such as soft materials such as silicone) to enhance the user's wearing comfort, the relationship between the panel and the user's body is not direct contact, but is against each other. In some embodiments, when the bone conduction speaker is worn on the user's body, the entire area of the panel comes into contact with or abuts the user's body. In some embodiments, when the bone conduction speaker is worn on the user's body, a partial area of the panel contacts or abuts the user's body.
  • other materials such as soft materials such as silicone
  • the area on the panel for contacting or abutting the user's body may occupy more than 50% of the entire panel area, and more preferably, may occupy more than 60% of the panel area.
  • the area on the panel that contacts or abuts the user's body can be flat or curved.
  • the normal when the area on the panel for contacting or abutting the user's body is a plane, its normal meets the general definition of normal, which is a dashed line perpendicular to the plane. In some embodiments, when the area on the panel used to contact or abut the user's body is a curved surface, the normal is the average normal of the area. Among them, the definition of the average normal is as follows:
  • the curved surface is a quasi-plane close to a flat surface, that is, a surface whose angle between the normal at any point in at least 50% of the curved surface and its average normal is less than a set threshold.
  • the set threshold is less than 10°. In some embodiments, the set threshold may be further less than 5°.
  • the straight line B where the driving force lies and the normal A'of the area on the panel 1003 for contacting or abutting the user's body have the included angle ⁇ .
  • the numerical range of the included angle ⁇ may be 0 ⁇ 180°, and further the numerical range may be 0 ⁇ 180° and not equal to 90°.
  • the straight line B is set to have a positive direction pointing out of the bone conduction speaker, and the normal A of the panel 1003 (or the normal A'of the contact surface of the panel 1003 with the human skin) is also set to point out of the bone conduction speaker
  • the angle ⁇ formed by the normal A or A'and the straight line B in its positive direction is an acute angle, that is, 0 ⁇ 90°. More descriptions about normal A and normal A'can be found in FIG. 12 and related descriptions, and will not be repeated here.
  • the driving force generated by the driving device has a component in the first quadrant and/or the third quadrant of the XOY plane coordinate system.
  • the XOY plane coordinate system is a reference coordinate system, its origin O is located after the bone conduction speaker is worn on the human body, the contact surface of the panel and/or the shell and the human body, the X axis is parallel to the human crown axis, and the Y axis is parallel to the human body vector
  • the shape axis is parallel, and the positive direction of the X axis faces the outside of the human body, and the positive direction of the Y axis faces the front of the human body.
  • the quadrant should be understood as the four areas divided by the horizontal axis (such as the X axis) and the vertical axis (such as the Y axis) in the plane rectangular coordinate system, and each area is called a quadrant.
  • the quadrant is centered on the origin, and the X and Y axes are the dividing lines.
  • the upper right (the area surrounded by the positive half axis of the X axis and the positive half axis of the Y axis) is called the first quadrant, and the upper left (the area surrounded by the negative half axis of the X axis and the positive half axis of the Y axis) is called The second quadrant, the lower left (the area enclosed by the negative half axis of the X axis and the negative half axis of the Y axis) is called the third quadrant, and the lower right (the positive half axis of the X axis is surrounded by the negative half axis of the Y axis) Is called the fourth quadrant.
  • the point on the coordinate axis does not belong to any quadrant.
  • the driving force in this embodiment may be directly located in the first quadrant and/or the third quadrant of the XOY plane coordinate system, or the driving force may be in other directions, but in the XOY plane coordinate system
  • the projection or component in the first quadrant and/or the third quadrant is not 0, and the projection or component in the Z-axis direction may be 0 or not 0.
  • the Z axis is perpendicular to the XOY plane and passes through the origin O.
  • the minimum angle ⁇ between the straight line where the driving force is located and the normal to the area of the panel that contacts or abuts the user's body can be any acute angle, for example, the range of the angle ⁇ is preferably 5° ⁇ 80°; more preferably 15° to 70°; still more preferably 25° to 60°; still more preferably 25° to 50°; still more preferably 28° to 50°; still more preferably 30° to 39°; still more preferably 31° to 38°; more preferably 32° to 37°; more preferably 33° to 36°; more preferably 33° to 35.8°; more preferably 33.5° to 35°.
  • the included angle ⁇ may be 26°, 27°, 28°, 29°, 30°, 31°, 32°, 33°, 34°, 34.2°, 35°, 35.8°, 36°, 37° or 38°, etc., the error is controlled within 0.2 degrees.
  • the driving force direction should not be understood as the limitation of the driving force in this application.
  • the driving force may also have a component in the second and fourth quadrants of the XOY plane coordinate system Even the driving force can be located on the Y axis and so on.
  • FIG. 12 is a schematic structural view of a bone conduction speaker provided by some embodiments of the present application acting on human skin and bones.
  • the straight line where the driving force is located is collinear or parallel to the straight line where the driving device vibrates.
  • the direction of the driving force may be the same as or opposite to the vibration direction of the coil and/or the magnetic circuit assembly.
  • the panel may be flat or curved, or have several protrusions or grooves on the panel.
  • the normal of the area on the panel that contacts or abuts the user's body is not parallel to the line where the driving force is located.
  • the area on the panel that contacts or abuts the user's body is relatively flat, which may be a flat surface or a quasi-flat surface with little change in curvature.
  • the normal of any point on it can be used as the normal of the area.
  • the normal A of the panel 1003 and the panel 1003 are The normal A'of the human skin contact surface may be parallel or coincident.
  • the normal of the area may be its average normal. For the detailed definition of the average normal, please refer to the related description in FIG. 10, which will not be repeated here.
  • the normal of the area can also be determined as follows, selecting a certain point in an area when the panel is in contact with human skin, Determine the tangent plane of the panel at this point, and then determine the straight line that is perpendicular to the tangent plane at this point, and use this straight line as the normal of the panel.
  • the selected point is different, and the panel cuts out at this point.
  • the normals determined will also be different.
  • the normal A'at this time is The normal A of the panel is not parallel.
  • the straight line where the driving force is located (or the straight line where the driving device vibrates) has an angle ⁇ with the normal to the area, and the included angle is 0 ⁇ 180°.
  • the specified driving force line has a positive direction pointing out of the bone conduction speaker through the panel (or the contact surface of the panel and/or the casing with the human skin)
  • the designated panel or the panel and/or the casing is in contact with the human skin
  • the surface) normal has a positive direction pointing out of the bone conduction speaker, and the angle formed by these two straight lines in the positive direction is an acute angle.
  • the bone conduction speaker includes a driving device (also referred to as a transducing device in other embodiments), a transmission assembly 1803, a panel 1801, and a housing 1802.
  • the coil 1804 and the magnetic circuit assembly 1807 are both ring-shaped structures.
  • the driving device is a moving coil driving method, including a coil 1804 and a magnetic circuit assembly 1807.
  • the coil 1804 and the magnetic circuit assembly 1807 have mutually parallel axes, and the axis of the coil 1804 or the magnetic circuit assembly 1807 is perpendicular to the coil 1804 radial plane and/or the magnetic circuit assembly 1807 radial plane. In some embodiments, the coil 1804 and the magnetic circuit assembly 1807 have the same central axis, the central axis of the coil 1804 is perpendicular to the radial plane of the coil 1804, and passes through the geometric center of the coil 1804, the central axis of the magnetic circuit assembly 1807 and the magnetic circuit The radial plane of the component 1807 is perpendicular and passes through the geometric center of the magnetic circuit component 1807. The axis of the coil 1804 or the magnetic circuit assembly 1807 and the normal of the panel 1801 have the aforementioned angle ⁇ .
  • the relationship between the driving force F and the skin deformation S will be described below in conjunction with FIG. 12.
  • the driving force generated by the driving device lies on a line parallel to the normal line of the panel 1801 (that is, the angle ⁇ is zero)
  • the relationship between the driving force and the total skin deformation is:
  • F ⁇ is the driving force
  • S ⁇ is the total deformation of the skin in the direction perpendicular to the skin
  • E is the elastic modulus of the skin
  • A is the contact area between the panel and the skin
  • h is the total thickness of the skin (that is, the panel and bone the distance between).
  • F // is the magnitude of the driving force
  • S // is the total deformation of the skin in the direction parallel to the skin
  • G is the shear modulus of the skin
  • A is the contact area between the panel and the skin
  • h is the total thickness of the skin (i.e. The distance between the panel and the bone).
  • ⁇ is the skin's Poisson's ratio 0 ⁇ 0.5, so the shear modulus G is less than the elastic modulus E, corresponding to the total skin deformation S // >S ⁇ under the same driving force.
  • the Poisson's ratio of the skin is close to 0.4.
  • FIG. 13 is an angle-relative displacement relationship diagram of a bone conduction speaker according to some embodiments of the present application.
  • the relationship between the included angle ⁇ and the total skin deformation is that the greater the included angle ⁇ , the greater the relative displacement, and the greater the total skin deformation S.
  • the volume of the bone conduction speaker at low frequency is positively correlated with the total skin deformation S.
  • the greater the S the greater the volume of bone conduction low frequency.
  • the volume of the bone conduction speaker in the high-frequency part is positively related to the skin deformation S ⁇ in the direction perpendicular to the skin.
  • the greater S ⁇ the greater the volume of bone conduction low frequency.
  • the relationship between the included angle ⁇ and the total skin deformation S and the skin deformation S ⁇ in the direction perpendicular to the skin can be found in FIG. 13.
  • the relationship between the included angle ⁇ and the total skin deformation S is that the greater the included angle ⁇ , the greater the total skin deformation S, and the greater the volume of the low-frequency portion of the corresponding bone conduction speaker.
  • the relationship between the included angle ⁇ and the skin deformation S ⁇ in the direction perpendicular to the skin is that the greater the included angle ⁇ , the smaller the skin deformation S ⁇ in the direction perpendicular to the skin, the more the volume corresponding to the high frequency portion of the bone conduction speaker small.
  • the angle ⁇ should be at a suitable size.
  • the range of ⁇ is 5° to 80°, or 15° to 70°, or 25° to 50°, or 25° to 35°, or 25° to 30°, and so on.
  • FIG. 14 is a schematic diagram of a low-frequency part of a frequency response curve of a bone conduction speaker according to different included angles ⁇ provided by the present application.
  • the panel comes into contact with the skin and transmits vibration to the skin.
  • the skin also affects the vibration of the bone conduction speaker, which affects the frequency response curve of the bone conduction speaker. From the above analysis, we found that the greater the angle of the clip, the greater the total deformation of the skin under the same driving force, and for the bone conduction speaker, it is equivalent to the reduction of the skin's elasticity relative to its panel portion.
  • the frequency response of the low frequency region in the curve is adjusted to a lower frequency region, so that the low frequency dives deeper and the low frequency increases.
  • setting the included angle can effectively suppress the increase of the vibration feeling while increasing the low-frequency energy, thereby reducing the vibration feeling relatively, so that The low-frequency sensitivity of the bone conduction speaker is significantly improved, which improves the sound quality and human experience.
  • the increased low frequency and the less sense of vibration can be expressed as the angle ⁇ increases in the range of (0, 90°), the energy in the low frequency range of the vibration or sound signal increases, and Vibration sensation also increased, but the energy in the low-frequency range increased to a greater extent than vibration sensation. Therefore, in the relative effect, vibration sensation was relatively reduced. It can be seen from FIG. 14 that when the angle is large, the resonance peak in the low-frequency region appears at a lower frequency band, and the part where the frequency curvature is flat can be extended in disguise, thereby improving the sound quality of the speaker.
  • the minimum angle ⁇ between the straight line where the driving force is located and the normal line of the area on the panel for contacting or abutting the user's body can be any acute angle, and the acute angle here is not limited to the above 5° to 80°
  • the angle ⁇ can be less than 5°, for example, 1°, 2°, 3°, 4°, etc.
  • the included angle ⁇ may be greater than 80° and less than 90°, such as 81°, 82°, 85°, and so on.
  • the specific value of the included angle ⁇ may not be an integer (for example, 81.3°, 81.38°). Such deformations are within the scope of protection of this application.
  • the bone conduction speaker may include a first magnetic element 1502, a first magnetic conductive element 1504, a second magnetic conductive element 1506, a first vibration plate 1508, a voice coil 1510, a second vibration plate 1512, and a vibration panel 1514 .
  • some components of the earphone core in the bone conduction speaker may constitute a magnetic circuit assembly.
  • the magnetic circuit assembly may include a first magnetic element 1502, a first magnetic conductive element 1504, and a second magnetic conductive element 1506.
  • the magnetic circuit assembly may generate a first full magnetic field (also may be referred to as "total magnetic field of the magnetic circuit assembly" or "first magnetic field").
  • the magnetic element described in this application refers to an element that can generate a magnetic field, such as a magnet.
  • the magnetic element may have a magnetization direction, and the magnetization direction refers to a magnetic field direction inside the magnetic element.
  • the first magnetic element 1502 may include one or more magnets, and the first magnetic element may generate a second magnetic field.
  • the magnet may include a metal alloy magnet, ferrite, or the like.
  • the metal alloy magnet may include 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 barium ferrite, steel ferrite, manganese ferrite, lithium manganese ferrite, or the like, or a combination thereof.
  • the lower surface of the first magnetic element 1504 may be connected to the upper surface of the first magnetic element 1502.
  • the second magnetic element 1506 may be connected to the first magnetic element 1502.
  • the magnetizer mentioned here can also be called a magnetic field concentrator or iron core.
  • the magnetizer can adjust the distribution of the magnetic field (for example, the second magnetic field generated by the first magnetic element 1502).
  • the magnetizer may include an element made of soft magnetic material.
  • the soft magnetic material may include metal materials, metal alloys, metal oxide materials, amorphous metal materials, etc., such as iron, iron-silicon alloys, iron-aluminum alloys, nickel-iron alloys, iron-cobalt Alloy, low carbon steel, silicon steel sheet, silicon steel sheet, ferrite, etc.
  • the magnetizer can be processed by one or more combinations of casting, plastic processing, cutting processing, powder metallurgy, and the like. Casting can include sand casting, investment casting, pressure casting, centrifugal casting, etc.; plastic processing can include one or more combinations of rolling, casting, forging, stamping, extrusion, drawing, etc.; cutting processing can include turning and milling , Planing, grinding, etc.
  • the processing method of the magnetizer may include 3D printing, CNC machine tools, and the like.
  • the connection manners between the first magnetically permeable element 1504, the second magnetically permeable element 1506 and the first magnetic element 1502 may include one or more combinations such as bonding, clamping, welding, riveting, and bolting.
  • the first magnetic element 1502, the first magnetic permeable element 1504, and the second magnetic permeable element 1506 may be arranged in an axisymmetric structure.
  • the axisymmetric structure may be a ring structure, a columnar structure, or other axisymmetric structures.
  • a magnetic gap may be formed between the first magnetic element 1502 and the second magnetic conductive element 1506.
  • the voice coil 1510 may be disposed in the magnetic gap.
  • the voice coil 1510 may be connected to the first vibration plate 1508.
  • the first vibration plate 1508 may be connected to the second vibration plate 1512, and the second vibration plate 1512 may be connected to the vibration panel 1514.
  • the ampere force drives the voice coil 1510 to vibrate.
  • the vibration of the voice coil 1510 drives the vibration of the first vibrating plate 1508, the second vibrating plate 1512, and the vibrating panel 1514.
  • the vibration panel 1514 transmits the vibration to the auditory nerve through tissues and bones, so that a person can hear sound.
  • the vibration panel 1514 may directly contact the human skin, or may contact the skin through a vibration transmission layer composed of a specific material.
  • the magnetic induction lines passing through the voice coil are not uniform and are divergent.
  • magnetic leakage may be formed in the magnetic circuit, that is, more magnetic induction lines leak out of the magnetic gap and fail to pass through the voice coil, thereby reducing the magnetic induction strength (or magnetic field strength) at the voice coil position, affecting the bone conduction speaker Sensitivity. Therefore, the bone conduction speaker 100 may further include at least one second magnetic element and/or at least one third magnetic conductive element (not shown in the figure).
  • the at least one second magnetic element and/or at least one third magnetic permeable element can suppress the leakage of magnetic induction lines, restrict the shape of the magnetic induction lines passing through the voice coil, so that more magnetic induction lines pass through the sound as densely as possible Coil to enhance the magnetic induction strength (or magnetic field strength) at the position of the voice coil, thereby improving the sensitivity of the bone conduction speaker, thereby improving the mechanical conversion efficiency of the bone conduction speaker (that is, converting the electrical energy input to the bone conduction speaker into the mechanical energy of the voice coil vibration s efficiency).
  • the magnetic circuit assembly 2100 may include a first magnetic element 2102, a first magnetic conductive element 2104, a second magnetic conductive element 2106, and a second magnetic element 2108.
  • the first magnetic element 2102 and/or the second magnetic element 2108 may include any one or more of the magnets described in this application.
  • the first magnetic element 2102 may include a first magnet
  • the second magnetic element 2108 may include a second magnet
  • the first magnet and the second magnet may be the same or different.
  • the first magnetically permeable element 2104 and/or the second magnetically permeable element 2106 may include any one or several magnetically permeable materials described in this application.
  • the processing method of the first magnetic conductive element 2104 and/or the second magnetic conductive element 2106 may include any one or several processing methods described in this application.
  • the first magnetic element 2102 and/or the first magnetically conductive element 2104 may be configured as an axisymmetric structure.
  • the first magnetic element 2102 and/or the first magnetic permeable element 2104 may be a cylinder, a rectangular parallelepiped, or a hollow ring (for example, the cross-section is in the shape of a racetrack).
  • the first magnetic element 2102 and the first magnetic conductive element 2104 may be coaxial cylinders with the same or different diameters.
  • the second magnetically conductive element 2106 may be a groove type structure.
  • the groove-shaped structure may include a U-shaped cross-section (as shown in FIG. 15).
  • the groove-shaped second magnetic conductive element 2106 may include a bottom plate and a side wall.
  • the bottom plate and the side wall may be integrally formed, for example, the side wall may be formed by the bottom plate extending in a direction perpendicular to the bottom plate.
  • the bottom plate may be connected to the side wall by any one or several connection methods described in this application.
  • the second magnetic element 2108 may be set in a ring shape or a sheet shape.
  • the second magnetic element 2108 may be ring-shaped.
  • the second magnetic element 2108 may include an inner ring and an outer ring.
  • the shape of the inner ring and/or the outer ring may be circular, elliptical, triangular, quadrilateral, or any other polygon.
  • the second magnetic element 2108 may be composed of multiple magnet arrangements. The two ends of any one of the plurality of magnets may be connected to the two ends of adjacent magnets or have a certain distance. The spacing between multiple magnets may be the same or different.
  • the second magnetic element 2108 may be composed of 2 or 3 sheet-shaped magnets arranged equidistantly.
  • the shape of the sheet-shaped magnet may be a fan shape, a quadrilateral shape, or the like.
  • the second magnetic element 2108 may be coaxial with the first magnetic element 2102 and/or the first magnetic conductive element 2104.
  • the upper surface of the first magnetic element 2102 may be connected to the lower surface of the first magnetic conductive element 2104.
  • the lower surface of the first magnetic element 2102 may be connected to the bottom plate of the second magnetic element 206.
  • the lower surface of the second magnetic element 2108 is connected to the side wall of the second magnetic conductive element 2106.
  • the connection between the first magnetic element 2102, the first magnetic permeable element 2104, the second magnetic permeable element 2106 and/or the second magnetic element 2108 may include one of bonding, clamping, welding, riveting, bolting, etc. or Many combinations.
  • a magnetic gap is formed between the first magnetic element 2102 and/or the first magnetic permeable element 2104 and the inner ring of the second magnetic element 2108.
  • the voice coil 2128 may be disposed in the magnetic gap.
  • the height of the second magnetic element 2108 and the voice coil 2128 relative to the bottom plate of the second magnetic conductive element 2106 are equal.
  • the first magnetic element 2102, the first magnetic conductive element 2104, the second magnetic conductive element 2106, and the second magnetic element 2108 may form a magnetic circuit.
  • the magnetic circuit assembly 2100 can generate a first full magnetic field (also referred to as "total magnetic field of the magnetic circuit assembly” or "first magnetic field”), and the first magnetic element 2102 can generate a second magnetic field.
  • the first full magnetic field is a magnetic field generated by all components in the magnetic circuit assembly 2100 (for example, the first magnetic element 2102, the first magnetic conductive element 2104, the second magnetic conductive element 2106, and the second magnetic element 2108) Formed together.
  • the magnetic field strength of the first full magnetic field in the magnetic gap (may also be referred to as magnetic induction strength or magnetic flux density) is greater than the magnetic field strength of the second magnetic field in the magnetic gap.
  • the second magnetic element 2108 may generate a third magnetic field, which may increase the magnetic field strength of the first full magnetic field at the magnetic gap.
  • the third magnetic field mentioned here improves the magnetic field strength of the first full magnetic field means that when the third magnetic field exists (ie, the second magnetic element 2108 is present), the magnetic field strength of the first full magnetic field in the magnetic gap is greater than that The first full magnetic field is when the third magnetic field is present (ie, there is no second magnetic element 2108).
  • the magnetic circuit assembly indicates a structure including all magnetic elements and magnetic permeable elements
  • the first full magnetic field indicates the magnetic field generated by the magnetic circuit assembly as a whole
  • the second magnetic field indicates the third magnetic field ,...
  • the Nth magnetic field respectively represents the magnetic field generated by the corresponding magnetic element.
  • the magnetic elements that generate the second magnetic field may be the same or different.
  • the angle between the magnetization direction of the first magnetic element 2102 and the magnetization direction of the second magnetic element 2108 is between 0 degrees and 180 degrees. In some embodiments, the angle between the magnetization direction of the first magnetic element 2102 and the magnetization direction of the second magnetic element 2108 is between 45 degrees and 135 degrees. In some embodiments, the angle between the magnetization direction of the first magnetic element 2102 and the magnetization direction of the second magnetic element 2108 is equal to or greater than 90 degrees.
  • the magnetization direction of the first magnetic element 2102 is perpendicular to the lower surface or the upper surface of the first magnetic element 2102 vertically upward (as shown in the direction of a in the figure), and the magnetization direction of the second magnetic element 2108 is determined by the The inner ring of the two magnetic elements 2108 points toward the outer ring (as shown in the direction of b in the figure, on the right side of the first magnetic element 2102, the magnetization direction of the first magnetic element 2102 is deflected 90 degrees in the clockwise direction).
  • the angle between the direction of the first full magnetic field and the magnetization direction of the second magnetic element 2108 is not higher than 90 degrees. In some embodiments, at the position of the second magnetic element 2108, the angle between the direction of the magnetic field generated by the first magnetic element 2102 and the magnetization direction of the second magnetic element 2108 may be 0 degrees, 10 degrees, 20 degrees Equal to or less than 90 degrees.
  • the second magnetic element 2108 can increase the total magnetic flux in the magnetic gap in the magnetic circuit assembly 2100, thereby increasing the magnetic induction intensity in the magnetic gap. Moreover, under the action of the second magnetic element 2108, the originally divergent magnetic induction lines converge to the position of the magnetic gap, further increasing the magnetic induction intensity in the magnetic gap.
  • FIG. 17 is a schematic longitudinal cross-sectional view of a magnetic circuit assembly 2600 according to some embodiments of the present application. As shown in FIG. 17, the magnetic circuit assembly 2600 differs from the magnetic circuit assembly 2100 in that it may further include at least one conductive element (eg, first conductive element 2118, second conductive element 2120, and third conductive element 2122) .
  • at least one conductive element eg, first conductive element 2118, second conductive element 2120, and third conductive element 2122
  • the conductive element may include a metal material, a metal alloy material, an inorganic non-metallic material, or other conductive materials.
  • the metal material may include gold, silver, copper, aluminum, etc.; the metal alloy material may include iron-based alloy, aluminum-based alloy material, copper-based alloy, zinc-based alloy, etc.; the inorganic non-metallic material may include graphite, etc.
  • the conductive element may be in the form of a sheet, a ring, a mesh, or the like.
  • the first conductive element 2118 may be disposed on the upper surface of the first magnetic conductive element 2104.
  • the second conductive element 2120 may connect the first magnetic element 2102 and the second magnetic conductive element 2106.
  • the third conductive element 2122 may be connected to the side wall of the first magnetic element 2102.
  • the first magnetic conductive element 2104 may protrude from the first magnetic element 2102 to form a first concave portion, and the third conductive element 2122 is disposed in the first concave portion.
  • the first conductive element 2118, the second conductive element 2120, and the third conductive element 2122 may include the same or different conductive materials.
  • the first conductive element 2118, the second conductive element 2120, and the third conductive element 2122 may be connected to the first magnetic conductive element 2104, the second magnetic conductive element 2106, and/or via any one or more of the connection methods described in this application
  • a magnetic gap is formed between the first magnetic element 2102, the first magnetic conductive element 2104, and the inner ring of the second magnetic element 2108.
  • the voice coil 2128 may be disposed in the magnetic gap.
  • the first magnetic element 2102, the first magnetic conductive element 2104, the second magnetic conductive element 2106, and the second magnetic element 2108 may form a magnetic circuit.
  • the conductive element may reduce the inductive reactance of the voice coil 2128. For example, if the first alternating current is applied to the voice coil 2128, a first alternating induced magnetic field will be generated near the voice coil 2128.
  • the first alternating induction magnetic field will cause the voice coil 2128 to have an inductive reactance and hinder the movement of the voice coil 2128.
  • a conductive element for example, a first conductive element 2118, a second conductive element 2120, and a third conductive element 2122
  • the conductive element can induce Second alternating current.
  • the third alternating current in the conductive element can generate a second alternating induced magnetic field in the vicinity thereof, the second alternating induced magnetic field is opposite to the direction of the first alternating induced magnetic field, and the first alternating current can be weakened
  • the induced magnetic field is changed, thereby reducing the inductance of the voice coil 2128, increasing the current in the voice coil, and improving the sensitivity of the bone conduction speaker.
  • FIG. 18 is a schematic longitudinal cross-sectional view of a magnetic circuit assembly 2700 according to some embodiments of the present application.
  • the magnetic circuit assembly 2700 differs from the magnetic circuit assembly 2500 in that the magnetic circuit assembly 2700 may further include a third magnetic element 2110, a fourth shaped magnetic element 2112, a fifth magnetic element 2114, a third guide The magnetic element 2116, the sixth magnetic element 2124, and the seventh magnetic element 2126.
  • the third magnetic element 2110, the fourth magnetic element 2112, the fifth magnetic element 2114, the third magnetic permeable element 2116 and/or the sixth magnetic element 2124, and the seventh magnetic element 2126 may be arranged as coaxial annular cylinders.
  • the upper surface of the second magnetic element 2108 is connected to the seventh magnetic element 2126, and the lower surface of the second magnetic element 2108 may be connected to the third magnetic element 2110.
  • the third magnetic element 2110 may be connected to the second magnetic element 2106.
  • the upper surface of the seventh magnetic element 2126 may be connected to the third magnetic conductive element 2116.
  • the fourth magnetic element 2112 can connect the second magnetic element 2106 and the first magnetic element 2102.
  • the sixth magnetic element 2124 may connect the fifth magnetic element 2114, the third magnetic conductive element 2116, and the seventh magnetic element 2126.
  • the first magnetic element 2102, the first magnetic permeable element 2104, the second magnetic permeable element 2106, the second magnetic element 2108, the third magnetic element 2110, the fourth magnetic element 2112, the fifth magnetic element 2114, The third magnetic element 2116, the sixth magnetic element 2124, and the seventh magnetic element 2126 may form a magnetic circuit and a magnetic gap.
  • the angle between the magnetization direction of the first magnetic element 2102 and the magnetization direction of the sixth magnetic element 2124 may be between 0 degrees and 180 degrees. In some embodiments, the angle between the magnetization direction of the first magnetic element 2102 and the magnetization direction of the sixth magnetic element 2124 is between 45 degrees and 135 degrees. In some embodiments, the angle between the magnetization direction of the first magnetic element 2102 and the magnetization direction of the sixth magnetic element 2124 is not higher than 90 degrees.
  • the magnetization direction of the first magnetic element 2102 is perpendicular to the lower surface or the upper surface of the first magnetic element 2102 vertically upward (as shown in direction a), and the magnetization direction of the sixth magnetic element 2124 is determined by the sixth The outer ring of the magnetic element 2124 points toward the inner ring (as shown in the direction g in the figure, on the right side of the first magnetic element 2102, the magnetization direction of the first magnetic element 2102 is deflected 270 degrees in the clockwise direction). In some embodiments, in the same vertical direction, the magnetization direction of the sixth magnetic element 2124 and the magnetization direction of the fourth magnetic element 2112 may be the same.
  • the angle between the direction of the magnetic field generated by the magnetic circuit assembly 2700 and the magnetization direction of the sixth magnetic element 2124 is not higher than 90 degrees. In some embodiments, at the position of the sixth magnetic element 2124, the angle between the direction of the magnetic field generated by the first magnetic element 2102 and the magnetization direction of the sixth magnetic element 2124 may be 0 degrees, 10 degrees, 20 degrees Equal to or less than 90 degrees.
  • the angle between the magnetization direction of the first magnetic element 2102 and the magnetization direction of the seventh magnetic element 2126 may be between 0 degrees and 180 degrees. In some embodiments, the angle between the magnetization direction of the first magnetic element 2102 and the magnetization direction of the seventh magnetic element 2126 is between 45 degrees and 135 degrees. In some embodiments, the angle between the magnetization direction of the first magnetic element 2102 and the magnetization direction of the seventh magnetic element 2126 is not higher than 90 degrees.
  • the magnetization direction of the first magnetic element 2102 is perpendicular to the lower surface or the upper surface of the first magnetic element 2102 vertically upward (as shown in direction a), and the magnetization direction of the seventh magnetic element 2126 is determined by the seventh The lower surface of the magnetic element 2126 points to the upper surface (as shown in the direction f in the figure, on the right side of the first magnetic element 2102, the magnetization direction of the first magnetic element 2102 is deflected 360 degrees in the clockwise direction).
  • the magnetization direction of the seventh magnetic element 2126 and the magnetization direction of the third magnetic element 2110 may be opposite.
  • the angle between the direction of the magnetic field generated by the magnetic circuit assembly 2700 and the magnetization direction of the seventh magnetic element 2126 is not higher than 90 degrees. In some embodiments, at the position of the seventh magnetic element 2126, the angle between the direction of the magnetic field generated by the first magnetic element 2102 and the magnetization direction of the seventh magnetic element 2126 may be 0 degrees, 10 degrees, 20 degrees Equal to or less than 90 degrees.
  • the third magnetic permeable element 2116 can close the magnetic circuit generated by the magnetic circuit assembly 2700, so that more magnetic induction lines are concentrated in the magnetic gap, thereby suppressing magnetic leakage and increasing the magnetic gap The magnetic induction intensity and the effect of improving the sensitivity of bone conduction speakers.
  • FIG. 19 is a schematic longitudinal cross-sectional view of a magnetic circuit assembly 2900 according to some embodiments of the present application.
  • the magnetic circuit assembly 2900 may include a first magnetic element 2902, a first magnetic conductive element 2904, a first full magnetic field changing element 2906, and a second magnetic element 2908.
  • the upper surface of the first magnetic element 2902 may be connected to the lower surface of the first magnetic conductive element 2904, and the second magnetic element 2908 may be connected to the first magnetic element 2902 and the first full magnetic field changing element 2906.
  • the connection between the first magnetic element 2902, the first magnetic permeable element 2904, the first full magnetic field changing element 2906, and/or the second magnetic element 2908 may be based on any one or several connection methods described in this application.
  • the first magnetic element 2902, the first magnetic permeable element 2904, the first full magnetic field changing element 2906, and/or the second magnetic element 2908 may form a magnetic circuit and a magnetic gap.
  • the magnetic circuit assembly 2900 can generate a first full magnetic field, and the first magnetic element 2902 can generate a second magnetic field.
  • the magnetic field strength of the first full magnetic field in the magnetic gap is greater than that of the second magnetic field.
  • the second magnetic element 2908 may generate a third magnetic field, which may increase the magnetic field strength of the second magnetic field at the magnetic gap.
  • the angle between the magnetization direction of the first magnetic element 2902 and the magnetization direction of the second magnetic element 2908 may be between 0 degrees and 180 degrees. In some embodiments, the angle between the magnetization direction of the first magnetic element 2902 and the magnetization direction of the second magnetic element 2908 is between 45 degrees and 135 degrees. In some embodiments, the angle between the magnetization direction of the first magnetic element 2902 and the magnetization direction of the second magnetic element 2908 may not be higher than 90 degrees.
  • the angle between the direction of the first full magnetic field and the magnetization direction of the second magnetic element 2908 is not higher than 90 degrees. In some embodiments, at the position of the second magnetic element 2908, the angle between the direction of the magnetic field generated by the first magnetic element 2902 and the magnetization direction of the second magnetic element 2908 may be 0 degrees, 10 degrees, 20 degrees Equal angle less than or equal to 90 degrees.
  • the magnetization direction of the first magnetic element 2902 is perpendicular to the lower surface or upper surface of the first magnetic element 2902 (as shown in direction a), and the magnetization direction of the second magnetic element 2908 is determined by the second magnetic element 2908
  • the outer ring of is directed toward the inner ring (as shown in direction c in the figure, on the right side of the first magnetic element 2902, the magnetization direction of the first magnetic element 2902 is deflected 270 degrees in the clockwise direction).
  • the first full magnetic field changing element 2906 in the magnetic circuit assembly 2900 can increase the total magnetic flux in the magnetic gap, thereby increasing the magnetic induction intensity in the magnetic gap. Moreover, under the action of the first full magnetic field changing element 2906, the originally divergent magnetic induction lines converge to the position of the magnetic gap, further increasing the magnetic induction intensity in the magnetic gap.
  • the magnetic circuit assembly 3000 may include a first magnetic element 2902, a first magnetic conductive element 2904, a first full magnetic field changing element 2906, a second magnetic element 2908, a third magnetic element 2910 , A fourth magnetic element 2912, a fifth magnetic element 2916, a sixth magnetic element 2918, a seventh magnetic element 2920, and a second ring element 2922.
  • the first full magnetic field changing element 2906 and/or the second annular element 2922 may include an annular magnetic element or an annular magnetically permeable element.
  • the ring-shaped magnetic element may include any one or more of the magnet materials described in this application, and the ring-shaped magnetic permeable element may include any one or more of the magnetic materials described in this application.
  • the sixth magnetic element 2918 may connect the fifth magnetic element 2916 and the second ring element 2922
  • the seventh magnetic element 2920 may connect the third magnetic element 2910 and the second ring element 2922.
  • the first magnetic element 2902, the fifth magnetic element 2916, the second magnetic element 2908, the third magnetic element 2910, the fourth magnetic element 2912, the sixth magnetic element 2918 and/or the seventh magnetic element 2920 are The first magnetic conductive element 2904, the first full magnetic field changing element 2906, and the second ring element 2922 may form a magnetic circuit.
  • the angle between the magnetization direction of the first magnetic element 2902 and the magnetization direction of the sixth magnetic element 2918 may be between 0 degrees and 180 degrees. In some embodiments, the angle between the magnetization direction of the first magnetic element 2902 and the magnetization direction of the sixth magnetic element 2918 is between 45 degrees and 135 degrees. In some embodiments, the angle between the magnetization direction of the first magnetic element 2902 and the magnetization direction of the sixth magnetic element 2918 is not higher than 90 degrees.
  • the magnetization direction of the first magnetic element 2902 is perpendicular to the lower surface or the upper surface of the first magnetic element 2902 vertically upward (as shown in direction a), and the magnetization direction of the sixth magnetic element 2918 is determined by the sixth The outer ring of the magnetic element 2918 points toward the inner ring (as shown in the direction f in the figure, on the right side of the first magnetic element 2902, the magnetization direction of the first magnetic element 2902 is deflected 270 degrees in the clockwise direction). In some embodiments, in the same vertical direction, the magnetization direction of the sixth magnetic element 2918 and the magnetization direction of the second magnetic element 2908 may be the same.
  • the magnetization direction of the first magnetic element 2902 is perpendicular to the lower surface or upper surface of the first magnetic element 2902 vertically upward (as shown in the direction of a), and the magnetization direction of the seventh magnetic element 2920 is determined by the seventh The lower surface of the magnetic element 2920 points to the upper surface (as shown in the direction e in the figure, on the right side of the first magnetic element 2902, the magnetization direction of the first magnetic element 2902 is deflected 360 degrees in the clockwise direction).
  • the magnetization direction of the seventh magnetic element 2920 and the magnetization direction of the fourth magnetic element 2912 may be the same.
  • the angle between the direction of the magnetic field generated by the magnetic circuit assembly 2900 and the magnetization direction of the sixth magnetic element 2918 is not higher than 90 degrees. In some embodiments, at the position of the sixth magnetic element 2918, the angle between the direction of the magnetic field generated by the first magnetic element 2902 and the magnetization direction of the sixth magnetic element 2918 may be 0 degrees, 10 degrees, 20 degrees Equal to or less than 90 degrees.
  • the angle between the magnetization direction of the first magnetic element 2902 and the magnetization direction of the seventh magnetic element 2920 may be between 0 degrees and 180 degrees. In some embodiments, the angle between the magnetization direction of the first magnetic element 2902 and the magnetization direction of the seventh magnetic element 2920 is between 45 degrees and 135 degrees. In some embodiments, the angle between the magnetization direction of the first magnetic element 2902 and the magnetization direction of the seventh magnetic element 2920 is not higher than 90 degrees.
  • the angle between the direction of the magnetic field generated by the magnetic circuit assembly 3000 and the magnetization direction of the seventh magnetic element 2920 is not higher than 90 degrees. In some embodiments, at the position of the seventh magnetic element 2920, the angle between the direction of the magnetic field generated by the first magnetic element 2902 and the magnetization direction of the seventh magnetic element 2920 may be 0 degrees, 10 degrees, 20 degrees Equal to or less than 90 degrees.
  • the first full magnetic field changing element 2906 may be a ring-shaped magnetic element.
  • the magnetization direction of the first full magnetic field changing element 2906 may be the same as the magnetization direction of the second magnetic element 2908 or the fourth magnetic element 2912.
  • the magnetization direction of the first full magnetic field changing element 2906 may be directed from the outer ring of the first full magnetic field changing element 2906 to the inner ring.
  • the second annular element 2922 may be an annular magnetic element.
  • the magnetization direction of the second ring element 2922 may be the same as the magnetization direction of the sixth magnetic element 2918 or the seventh magnetic element 2920.
  • the magnetization direction of the second ring element 2922 may be directed from the outer ring of the second ring element 2922 to the inner ring.
  • multiple magnetic elements can increase the total magnetic flux.
  • the interaction of different magnetic elements can suppress the leakage of magnetic induction lines, improve the magnetic induction intensity at the magnetic gap, and improve the sensitivity of the bone conduction speaker.
  • the magnetic circuit assembly 3100 may include a first magnetic element 3102, a first magnetic conductive element 3104, a second magnetic conductive element 3106, and a second magnetic element 3108.
  • the first magnetic element 3102 and/or the second magnetic element 3108 may include any one or more of the magnets described in this application.
  • the first magnetic element 3102 may include a first magnet
  • the second magnetic element 3108 may include a second magnet
  • the first magnet and the second magnet may be the same or different.
  • the first magnetically permeable element 3104 and/or the second magnetically permeable element 3106 may include any one or several magnetically permeable materials described in this application.
  • the processing method of the first magnetic conductive element 3104 and/or the second magnetic conductive element 3106 may include any one or several processing methods described in this application.
  • the first magnetic element 3102, the first magnetic permeable element 3104, and/or the second magnetic element 3108 may be configured as an axisymmetric structure.
  • the first magnetic element 3102, the first magnetic permeable element 3104, and/or the second magnetic element 3108 may be a cylinder.
  • the first magnetic element 3102, the first magnetic conductive element 3104, and/or the second magnetic element 3108 may be coaxial cylinders, containing the same or different diameters.
  • the thickness of the first magnetic element 3102 may be greater than or equal to the thickness of the second magnetic element 3108.
  • the second magnetic conductive element 3106 may be a groove type structure.
  • the groove-shaped structure may include a U-shaped cross section.
  • the groove-shaped second magnetic conductive element 3106 may include a bottom plate and a side wall.
  • the bottom plate and the side wall may be integrally formed, for example, the side wall may be formed by the bottom plate extending in a direction perpendicular to the bottom plate.
  • the bottom plate may be connected to the side wall by any one or several connection methods described in this application.
  • the second magnetic element 3108 may be set in a ring shape or a sheet shape. For the shape of the second magnetic element 3108, reference may be made to the description elsewhere in the specification.
  • the second magnetic element 3108 may be coaxial with the first magnetic element 3102 and/or the first magnetic conductive element 3104.
  • the upper surface of the first magnetic element 3102 may be connected to the lower surface of the first magnetic conductive element 3104.
  • the lower surface of the first magnetic element 3102 may be connected to the bottom plate of the second magnetic element 3106.
  • the lower surface of the second magnetic element 3108 is connected to the upper surface of the first magnetic conductive element 3104.
  • the connection modes between the first magnetic element 3102, the first magnetic permeable element 3104, the second magnetic permeable element 3106 and/or the second magnetic element 3108 may include one of bonding, clamping, welding, riveting, bolting, etc. or Many combinations.
  • a magnetic gap is formed between the first magnetic element 3102, the first magnetic conductive element 3104, and/or the second magnetic element 3108 and the side wall of the second magnetic conductive element 3106.
  • the voice coil may be disposed in the magnetic gap.
  • the first magnetic element 3102, the first magnetic conductive element 3104, the second magnetic conductive element 3106, and the second magnetic element 3108 may form a magnetic circuit.
  • the magnetic circuit assembly 3100 can generate a first full magnetic field, and the first magnetic element 3102 can generate a second magnetic field.
  • the first full magnetic field is a magnetic field generated by all components in the magnetic circuit assembly 3100 (for example, the first magnetic element 3102, the first magnetic conductive element 3104, the second magnetic conductive element 3106, and the second magnetic element 3108) Formed together.
  • the magnetic field strength of the first full magnetic field in the magnetic gap (may also be referred to as magnetic induction strength or magnetic flux density) is greater than the magnetic field strength of the second magnetic field in the magnetic gap.
  • the second magnetic element 3108 may generate a third magnetic field, which may increase the magnetic field strength of the second magnetic field at the magnetic gap.
  • the angle between the magnetization direction of the second magnetic element 3108 and the magnetization direction of the first magnetic element 3102 is between 90 degrees and 180 degrees. In some embodiments, the angle between the magnetization direction of the second magnetic element 3108 and the magnetization direction of the first magnetic element 3102 is between 150 degrees and 180 degrees. In some embodiments, the magnetization direction of the second magnetic element 3108 is opposite to the magnetization direction of the first magnetic element 3102 (as shown, the a direction and the b direction).
  • the magnetic circuit assembly 3100 Compared with the magnetic circuit assembly of a single magnetic element, the magnetic circuit assembly 3100 adds a second magnetic element 3108.
  • the magnetization direction of the second magnetic element 3108 is opposite to the magnetization direction of the first magnetic element 3102, which can suppress the magnetic leakage of the first magnetic element 3102 in the magnetization direction, so that the magnetic field generated by the first magnetic element 3102 can be more compressed to the magnetic In the gap, the magnetic induction in the magnetic gap is increased.
  • the magnetic element in the magnetic circuit assembly is not limited to the above-mentioned first magnetic element, second magnetic element, third magnetic element, fourth magnetic element, fifth magnetic element, sixth magnetic element, seventh magnetic element, but also Increase or decrease the number of magnetic components. Such deformations are within the scope of protection of this application.
  • the above-described speaker device can transmit sound to the user through air conduction.
  • the speaker device may include one or more sound sources.
  • the sound source may be located at a specific position on the user's head, for example, the top of the head, forehead, cheeks, temples, pinna, back of the pinna, etc., without blocking or covering the ear canal.
  • FIG. 22 shows a schematic diagram of transmitting sound through air conduction.
  • the sound source 2210 and the sound source 2220 can generate sound waves of opposite phases ("+" and "-" in the figure indicate opposite phases).
  • the sound source mentioned here refers to the sound output hole of the speaker device to output sound.
  • the sound source 2210 and the sound source 2220 may be two sound exit holes respectively located at specific positions on the speaker device (for example, the movement housing 20 or the circuit housing 30).
  • the sound source 2210 and the sound source 2220 may be generated by the same vibration device 2201.
  • the vibration device 2201 includes a diaphragm (not shown in the figure).
  • the front of the diaphragm drives air to vibrate, and a sound source 2210 is formed at the sound hole through the sound guide channel 2212, and the air is driven to vibrate at the back of the diaphragm, and the sound is output through the sound guide channel 2222
  • a sound source 2220 is formed at the hole.
  • the sound guide channel refers to a sound propagation path from the diaphragm to the corresponding sound hole.
  • the sound guide channel is a path surrounded by a specific structure on the speaker (for example, the movement housing 20 or the circuit housing 30). It should be understood that, in some alternative embodiments, the sound source 2210 and the sound source 2220 may also be generated by different vibration devices through different diaphragm vibrations.
  • the sound transmitted to the user's ear may be referred to as near-field sound
  • the leaked sound transmitted to the environment may be referred to as far-field sound.
  • the near-field/far-field sounds of different frequencies generated by the speaker device are related to the distance between the sound source 2210 and the sound source 2220.
  • the near-field sound generated by the speaker device increases as the distance between the two sound sources increases, and the generated far-field sound (leakage) increases as the frequency increases.
  • the distance between the sound source 2210 and the sound source 2220 can be designed separately so that the low-frequency near-field sound (for example, sound with a frequency less than 800 Hz) generated by the speaker device is as large as possible, and the high-frequency far-field sound (for example, (Sounds with a frequency greater than 2000Hz) are as small as possible.
  • the speaker device may include two or more sets of dual sound sources.
  • Each set of dual sound sources includes two sound sources similar to the sound source 2210 and the sound source 2220, and generates sounds of specific frequencies respectively. Specifically, the first set of dual sound sources can be used to generate low frequency sounds, and the second set of dual sound sources can be used to generate high frequency sounds.
  • the distance between the two sound sources in the first set of dual sound sources can be set to a larger value. And because the wavelength of the low-frequency signal is long, the large distance between the two sound sources will not form an excessive phase difference in the far field, and therefore will not form excessive sound leakage in the far field. In order to make the high-frequency far-field sound smaller, the distance between the two sound sources in the second set of dual sound sources can be set to a smaller value. Because the wavelength of the high-frequency signal is short, the small distance between the two sound sources can avoid the formation of a large phase difference in the far field, thus avoiding the formation of large sound leakage. The distance between the second set of dual sound sources is less than the distance between the first set of dual sound sources.
  • the beneficial effects that the embodiments of the present application may bring include, but are not limited to: (1) The protective sleeve at the earhook elastically abuts the movement casing, improving the waterproof performance of the speaker device; (2) By using different molds Forming the earhook and the movement shell separately can reduce the size of the forming mold, thereby reducing the difficulty of processing the mold and the difficulty in forming the earhook and the movement shell during production; (3) By adjusting the normal A of the panel or The angle between the normal A'of the contact surface of the panel and the human skin and the straight line B where the driving force of the device can improve the sound quality of the speaker; (4) By adding magnetic elements, magnetic conductive elements and conductive elements to the magnetic circuit assembly, Improve the sensitivity of the speaker device; (5) The ear hook adopts elastic metal wire with a certain elastic deformation, which can be adapted to users with different ear shapes and head shapes. It should be noted that different embodiments may have different beneficial effects. In different embodiments, the possible beneficial effects may be any one or a combination

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Abstract

本申请实施例公开了一种扬声器装置，该装置包括耳挂，其中耳挂包括第一接插端和第二接插端，所述耳挂外围包裹保护套管，所述保护套管由弹性防水材料制成；用于容纳耳机芯的机芯壳体，所述机芯壳体与所述第一接插端接插固定，并与所述保护套管弹性抵接；以及用于容纳控制电路或电池的电路壳体，所述电路壳体与所述第二接插端接插固定，所述控制电路或电池驱动所述耳机芯振动，所述耳机芯振动产生驱动力驱动所述机芯壳体上外壳面板的振动，所述驱动力所在直线与所述外壳面板的法线不平行。本申请中机芯壳体与耳挂外围的保护套管弹性抵接，提高了扬声器装置整体的防水效果、简化了扬声器装置的制作和装配工序。

Description

一种扬声器装置
优先权信息
本申请要求于2019年1月5日提交的中国专利申请201910009927.4，其全部内容通过引用的方式并入本文。
技术领域
本申请涉及一种扬声器装置，特别涉及一种具有防水功能的扬声器装置。
背景技术
一般情况下，人能够听见声音是因为空气通过外耳耳道把振动传递到耳膜，通过耳膜形成的振动驱动人的听觉神经，由此感知声音。目前，耳机在人们的生活中用途广泛，例如，用户可以使用耳机播放音乐、接听电话等，耳机已经成为人们日常生活的重要物品。普通的耳机已无法满足用户在一些特殊场景(例如，游泳、户外雨天等)下的正常使用，而具有防水功能且音质较佳的耳机更受消费者青睐。因此，有必要提供一种具有防水功能且便于生产和组装的扬声器装置。
发明内容
本说明书实施例提供了一种扬声器装置，其包括：耳挂，包括第一接插端和第二接插端，所述耳挂外围包裹保护套管，所述保护套管由弹性防水材料制成；机芯壳体，用于容纳耳机芯，所述机芯壳体与所述第一接插端接插固定，并与所述保护套管弹性抵接；以及电路壳体，用于容纳控制电路或电池，所述电路壳体与所述第二接插端接插固定，所述控制电路或电池驱动所述耳机芯振动，所述耳机芯振动产生驱动力驱动所述机芯壳体上外壳面板的振动，所述驱动力所在直线与所述外壳面板的法线不平行。
在一些实施例中，所述耳挂还包括：弹性金属丝；导线及固定套管，所述固定套管将所述导线固定于所述弹性金属丝上；所述保护套管，以注塑的方式形成于所述弹性金属丝、所述导线、所述固定套管、所述第一接插端和第二接插端的外围。
在一些实施例中，所述第一接插端和第二接插端分别以注塑的方式形成于所述弹性金属丝的两端，所述第一接插端和第二接插端上分别设置有第一走线通道和第二走线通道，所述导线沿所述第一走线通道和第二走线通道延伸。
在一些实施例中，所述导线以穿线方式穿入所述第一走线通道和所述第二走线通道。
在一些实施例中，所述第一走线通道包括第一走线槽和连通所述第一走线槽与所述第一接插端的外端面的第一走线孔，所述导线沿所述第一走线槽和所述第一走线孔延伸并外露于所述第一接插端的外端面；所述第二走线通道包括第二走线槽和连通所述第二走线槽与所述第一接插端的外端面的第二走线孔，所述导线沿所述第二走线槽和所述第二走线孔延伸并外露于所述第二接插端的外端面。
在一些实施例中，所述固定套管包括至少两个，并沿所述弹性金属丝间隔设置。
在一些实施例中，所述机芯壳体设置有与所述机芯壳体的外端面连通的第一接插孔，所述第一接插孔的内侧壁上设置有止挡块，所述第一接插孔与第一接插端卡接连接。
在一些实施例中，所述第一接插端包括插入部和两个弹性卡勾。
所述插入部，至少部分插入于所述第一接插孔内并抵接于所述止挡块的外侧面上；所述两个弹性卡勾，设置于所述插入部朝向所述机芯壳体内部的一侧，两个弹性卡勾能够在外部推力和所述止挡块的作用下彼此并拢，并在经过所述止挡块后弹性回复成卡置于所述止挡块的内侧面上，实现所述机芯壳体与所述第一接插端的接插固定。
在一些实施例中，所述插入部部分插入于所述第一接插孔内，且在所述插入部的外露部分呈阶梯状设置，形成与所述机芯壳体的外端面间隔设置的环形台面。
在一些实施例中，所述保护套管进一步延伸至所述环形台面朝向所述机芯壳体的外端面的一侧，并在所述机芯壳体与所述第一接插端接插固定时与所述机芯壳体弹性抵接，进而实现密封。
在一些实施例中，所述扬声器装置还包括固定件；所述电路壳体设置有第二接插孔，所述第二接插端至少部分插入至所述第二接插孔内通过所述固定件插接连接。
在一些实施例中，所述第二接插端设置有与所述第二接插孔的插入方向垂直设置的开槽，所述电路壳体的第一侧壁上设置有与所述开槽位置对应的通孔；所述固定件包括两条平行设置的插脚和用于连接所述插脚的连接部；所述插脚从所述电路壳体的外侧经所述通孔插入至所述开槽，进而实现所述电路壳体与所述第二接插端的接插固定。
在一些实施例中，所述耳挂还包括与所述保护套管一体成型的壳体护套，所述壳体护套以套装方式包覆于所述电路壳体的外围。
在一些实施例中，所述外壳面板与所述耳机芯具有传动连接，所述外壳面板的全部或局部用于与使用者身体接触或抵靠，以传导所述耳机芯振动产生的声音。
在一些实施例中，设定所述驱动力所在直线具有经面板指向扬声器装置外的正方向，设定所述法线具有指向扬声器装置外的正方向，则两条直线在其正方向上的夹角为锐角。
在一些实施例中，所述耳机芯包括线圈以及磁路系统，线圈或磁路系统的轴线与所述法线不平行；所述轴线与线圈径向平面和/或磁路系统径向平面垂直。
在一些实施例中，所述驱动力在XOY平面坐标系的第一象限和/或第三象限内具有分量；其中，XOY平面坐标系的原点O位于扬声器装置与人体接触面上，X轴与人体冠状轴平行，Y轴与人体矢状轴平行，且X轴正方向朝向人体外侧，Y轴正方向朝向人体前方。
在一些实施例中，所述外壳面板上用于与使用者身体接触或抵靠的区域包括平面或准平面。
在一些实施例中，所述耳机芯还包括磁路组件，所述磁路组件产生第一磁场，所述磁路组件包括：第一磁性元件，所述第一磁性元件产生第二磁场；第一导磁元件；以及至少一个第二磁性元件，所述至少一个第二磁性元件环绕所述第一磁性元件，并与所述第一磁性元件之间形成磁间隙，所述第一磁场在所述磁间隙内的磁场强度大于所述第二磁场在所述磁间隙内的磁场强度。
在一些实施例中，所述磁路组件进一步包括：第二导磁元件；以及至少一个第三磁性元件， 其中，所述至少一个第三磁性元件连接所述第二导磁元件和所述至少一个第二磁性元件。
在一些实施例中，所述磁路组件进一步包括：至少一个第四磁性元件，其中，所述至少一个第四磁性元件位于所述磁间隙的下方并连接所述第一磁性元件以及所述第二导磁元件。
在一些实施例中，所述磁路组件进一步包括：至少一个第五磁性元件，其中，所述至少一个第五磁性元件连接所述第一导磁元件的上表面。
在一些实施例中，所述磁路组件进一步包括：第三导磁元件，其中，所述第三导磁元件连接所述第五磁性元件的上表面，所述第三导磁元件被配置为抑制所述第一磁场的场强泄露。
在一些实施例中，所述第一导磁元件连接所述第一磁性元件的上表面，所述第二导磁元件包括底板和侧壁，以及所述第一磁性元件连接所述第二导磁元件的底板。
在一些实施例中，所述磁路组件进一步包括：至少一个导电元件，其中，所述导电元件连接所述第一磁性元件、所述第一导磁元件，或所述第二导磁元件中的至少一个元件。
附图说明
本申请将以示例性实施例的方式进一步说明，这些示例性实施例将通过附图进行详细描述。这些实施例并非限制性的，在这些实施例中，相同的编号表示相同的结构，其中：
图1是扬声器装置导致人耳产生听觉的过程；
图2是根据本申请一些实施例提供的MP3播放器的爆炸结构示意图；
图3是根据本申请一些实施例提供的MP3播放器中耳挂的部分结构示意图；
图4是图3中A部分的局部放大图；
图5是根据本申请一些实施例提供的MP3播放器的局部截面图；
图6是图5中B部分的局部放大图；
图7是根据本申请一些实施例提供的机芯壳体的部分结构示意图；
图8是图7中D部分的局部放大图；
图9是根据本申请一些实施例提供的机芯壳体的局部截面图；
图10是本申请一些实施例提供的骨传导扬声器装置的应用场景及结构示意图；
图11是本申请一些实施例提供的一种夹角方向的示意图；
图12是本申请一些实施例提供的骨传导扬声器作用于人体皮肤、骨骼的结构示意图；
图13是根据本申请一些实施例提供的骨传导扬声器的夹角-相对位移关系图；
图14是根据本申请提供的不同夹角θ时骨传导扬声器的频率响应曲线低频段部分的示意图；
图15是根据本申请的一些实施例所示的一种骨传导扬声器的纵截面示意图；
图16是根据本申请的一些实施例所示的一种磁路组件2100的纵截面示意图；
图17是根据本申请的一些实施例所示的磁路组件2600的纵截面示意图；
图18是根据本申请的一些实施例所示的一种磁路组件2700的纵截面示意图；
图19是根据本申请的一些实施例所示的一种磁路组件2900的纵截面示意图；
图20是根据本申请的一些实施例所示的一种磁路组件3000的纵截面示意图；
图21是根据本申请的一些实施例所示的一种磁路组件3100的纵截面示意图；
图22是根据本申请一些实施例提供的一种通过气传导的方式传递声音的示意图。
具体实施方式
为了更清楚地说明本申请的实施例的技术方案，下面将对实施例描述中所需要使用的附图作简单的介绍。显而易见地，下面描述中的附图仅仅是本申请的一些示例或实施例，对于本领域的普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图将本申请应用于其他类似情景。应当理解，给出这些示例性实施例仅仅是为了使相关领域的技术人员能够更好地理解进而实现本发明，而并非以任何方式限制本发明的范围。除非从语言环境中显而易见或另做说明，图中相同标号代表相同结构或操作。
如本申请和权利要求书中所示，除非上下文明确提示例外情形，“一”、“一个”、“一种”和/或“该”等词并非特指单数，也可包括复数。一般说来，术语“包括”与“包含”仅提示包括已明确标识的步骤和元素，而这些步骤和元素不构成一个排它性的罗列，方法或者设备也可能包含其他的步骤或元素。术语“基于”是“至少部分地基于”。术语“一个实施例”表示“至少一个实施例”；术语“另一实施例”表示“至少一个另外的实施例”。其他术语的相关定义将在下文描述中给出。以下，不失一般性，在描述本发明中声音传导相关技术时，将采用“播放器”、“扬声器装置”、“扬声装置”或“扬声器”的描述。该描述仅仅为声音传导应用的一种形式，对于该领域的普通技术人员来说，“播放器”、“播放装置”、“扬声装置”、“扬声器装置”或“助听器”也可用其他同类词语代替。事实上，本发明中的各种实现方式可以很方便地应用到其它非扬声器类的听力设备上。例如，对于本领域的专业人员来说，在了解扬声器的基本原理后，可能在不背离这一原理的情况下，对实施扬声器的具体方式与步骤进行形式和细节上的各种修正和改变，特别地，扬声器中加入环境声音拾取和处理功能，使该扬声器实现助听器的功能。例如，在使用骨传导扬声器的情况下，加入可以拾取使用者/佩戴者周围环境的声音的麦克风等传声器，在一定的算法下，将声音处理后(或者产生的电信号)传送至骨传导扬声器部分。即，骨传导扬声器可以经过一定的修改，加入拾取环境声音的功能，并经过一定的信号处理后通过骨传导扬声器部分将声音传递给使用者/佩戴者，从而实现骨传导助听器的功能。作为举例，这里所说的算法可以包括噪声消除、自动增益控制、声反馈抑制、宽动态范围压缩、主动环境识别、主动抗噪、定向处理、耳鸣处理、多通道宽动态范围压缩、主动啸叫抑制、音量控制等一种或多种的组合。
图1为扬声器装置导致人耳产生听觉的过程。扬声器装置通过其自带的扬声器可以通过骨传导或者气传导的方式将声音传递给听力系统，从而产生听觉。如图1所示，扬声器装置使人耳产生听觉的过程主要包括以下几个步骤：
在步骤101中，扬声器装置可以获取或者产生含有声音信息的信号。在一些实施例中，声音信息可以指具有特定数据格式的视频、音频文件，也可以指一般意义上能够携带最终可通过特定途径转化为声音的数据或文件。在一些实施例中，含有声音信息的信号可以来自于扬声器装置本身 的存储单元，也可以来自于扬声器装置以外的信息产生、存储或者传递系统。此处所讨论的声音信号并不局限于电信号，也可包括电信号之外的其它形式的如光信号、磁信号、机械信号等。原则上，只要该信号包含有扬声器装置可以用以产生声音的信息，均可作为声音信号进行处理。在一些实施例中，声音信号也不局限于一个信号源，可以来自于多个信号源。这些多个信号源可以相关也可以相互无关。在一些实施例中，声音信号传递或产生的方式可以是有线的也可以是无线的，可以是实时的也可以是延时的。例如，扬声器装置可以通过有线或者无线的方式接收含有声音信息的电信号，也可以直接从存储介质上获取数据，产生声音信号。以骨传导技术作为示例性说明，在骨传导扬声器中可以加入具有声音采集功能的组件，通过拾取环境中的声音，将声音的机械振动转换成电信号，通过放大器处理后获得满足特定要求的电信号。其中，有线连接包括但不限于使用金属电缆、光学电缆或者金属和光学的混合电缆，例如：同轴电缆、通信电缆、软性电缆、螺旋电缆、非金属护皮电缆、金属护皮电缆、多芯电缆、双绞线电缆、带状电缆、屏蔽电缆、电信电缆、双股电缆、平行双芯导线、和双绞线。以上描述的例子仅作为方便说明之用，有线连接的媒介还可以是其它类型，例如，其它电信号或光信号等的传输载体。
这里所说的存储设备/存储单元，包括直接连接存储(Direct Attached Storage)，网络附加存储(Network Attached Storage)和存储区域网络(Storage Area Network)等存储系统上的存储设备。存储设备包括但不限于常见的各类存储设备如固态存储设备(固态硬盘、固态混合硬盘等)、机械硬盘、USB闪存、记忆棒、存储卡(如CF、SD等)、其他驱动(如CD、DVD、HD DVD、Blu-ray等)、随机存储器(RAM)和只读存储器(ROM)。其中RAM有但不限于：十进计数管、选数管、延迟线存储器、威廉姆斯管、动态随机存储器(DRAM)、静态随机存储器(SRAM)、晶闸管随机存储器(T-RAM)、和零电容随机存储器(Z-RAM)等；ROM又有但不限于：磁泡存储器、磁钮线存储器、薄膜存储器、磁镀线存储器、磁芯内存、磁鼓存储器、光盘驱动器、硬盘、磁带、早期NVRAM(非易失存储器)、相变化内存、磁阻式随机存储式内存、铁电随机存储内存、非易失SRAM、闪存、电子抹除式可复写只读存储器、可擦除可编程只读存储器、可编程只读存储器、屏蔽式堆读内存、浮动连接门随机存取存储器、纳米随机存储器、赛道内存、可变电阻式内存、和可编程金属化单元等。以上提及的存储设备/存储单元是列举了一些例子，该存储设备/存储单元可以使用的存储设备并不局限于此。
在步骤102中，扬声器装置可以将含有声音信息的信号转换成振动并产生声音。振动的产生伴随着能量的转换，扬声器装置可以使用特定的换能装置实现信号向机械振动转换。转换的过程中可能包含多种不同类型能量的共存和转换。例如，电信号通过换能装置可以直接转换成机械振动，产生声音。再例如，声音信息包含在光信号中，一种特定的换能装置可以实现由光信号转换为振动信号的过程。其它可以在换能装置工作过程中共存和转换的能量类型包括热能、磁场能等。在一些实施例中，换能装置的能量转换方式包括但不限于动圈式、静电式、压电式、动铁式、气动式、电磁式等。扬声器装置的频率响应范围以及音质会受到不同换能方式以及换能装置中各个物理组件性能的影响。例如，在动圈式换能装置中，缠绕的柱状线圈与振动板相连，受信号电流驱动的线圈在 磁场中带动振动板振动发声，振动板材质的伸展和收缩、褶皱的变形、大小、形状以及固定方式，永磁体的磁密度等，都会对扬声器装置最终的音效质量带来很大的影响。
这里使用的术语“音质”可以理解为能够反映出声音的质量，指经处理、传输等过程后音频的保真度。在声音设备中，音质通常包含几个方面的内容，包括音频的强度和幅度、音频的频率、音频的泛音或谐波成分等。在评定声音音质时，既有客观评价音质的测量方法和评价标准，也有结合声音不同要素和主观感受来评价音质各种属性的方法，因此声音的产生、传递以及接收过程都会一定程度上影响声音的音质。
在步骤103中，声音通过传递系统进行传递。在一些实施例中，传递系统是指可以传递包含声音信息的振动信号的物质，例如，人或/和有听力系统的动物的颅骨、骨迷路、内耳淋巴液、螺旋器。又例如，可以传递声音的介质(例如，空气、液体)。仅仅为了说明声音信息通过传递系统进行传递的过程，以骨传导扬声器作为示例性说明，骨传导扬声器可以将电信号转化的声波(振动信号)直接通过骨头传至听觉中枢。此外还可以通过气传导的方式将声波传递至听觉中枢，关于气传导的内容请参见本说明书中其他地方的具体描述。
在步骤104中，声音信息被传递至传感终端。具体地，声音信息通过传递系统传递给传感终端。在一种工作场景中，扬声器装置拾取或产生含有声音信息的信号，通过换能装置将声音信息转换成声音振动，并通过传递系统将声音传递给传感终端，最终听到声音。不失一般性，以上描述的传感终端、听力系统、感觉器官等的主体可以是人，也可以是具有听力系统的动物。需要注意的是，以下对于人类使用扬声器装置的描述并不构成对扬声器装置使用场景的限制，类似的描述同样可以适用于其它动物。
以上对扬声器装置大致流程的描述仅仅是具体的示例，不应被视为是唯一可行的实施方案。显然，对于本领域的专业人员来说，在了解扬声器装置的基本原理后，可能在不背离这一原理的情况下，对实施扬声器装置的具体方式与步骤进行形式和细节上的各种修正和改变，但是这些修正和改变仍在以上描述的范围之内。例如，在步骤101获取含有声音信息的信号和步骤102声音产生之间，可以额外加入信号修正或强化步骤，该步骤可以将101中获取的信号根据特定的算法或参数进行强化或者修正。更进一步的，在步骤102声音产生和103声音传递步骤之间，可以额外加入振动强化或修正步骤。
本申请说明书中的扬声器装置可以包括但不限于耳机、MP3播放器、助听器。本申请的以下具体实施方式中以MP3播放器为例，对扬声器装置进行具体说明。图2是根据本申请一些实施例提供的MP3播放器的爆炸结构示意图，图3是根据本申请一些实施例提供的MP3播放器中耳挂的部分结构示意图，图4是图3中A部分的局部放大图。如图1所示，在一些实施例中，MP3播放器可以包括耳挂10、机芯壳体20、电路壳体30、后挂40、耳机芯50、控制电路60以及电池70。其中，机芯壳体20与电路壳体30分别设置于耳挂10的两端，后挂40则进一步设置于电路壳体30远离耳挂10的一端。机芯壳体20的数量为两个，分别用于容纳耳机芯50，电路壳体30的数量也为两个，分别用来容纳控制电路60和电池70，后挂40的两端分别连接对应的电路壳体30。其中，耳 挂10是指在用户佩戴骨传导MP3播放器时，用于环绕并支撑于用户的耳根部位，进而将机芯壳体20及耳机芯50悬挂并固定于用户耳朵预定位置的结构。
结合图2、图3和图4，在一些实施例中，耳挂10包括弹性金属丝11、导线12、固定套管13以及设置于弹性金属丝11两端的接插端14和接插端15。在一些实施例中，耳挂10还可以包括保护套管16以及与保护套管16一体成型的壳体护套17。其中，弹性金属丝11主要用于使耳挂10保持为与用户耳朵匹配的形状，并具有一定的弹性，从而能够在用户佩戴时根据用户的耳型以及头型产生一定的弹性形变以适配不同耳型以及头型的用户。在一些实施例中，弹性金属丝11可以由记忆合金制成，具有良好的变形恢复能力，从而即便是耳挂10受到外力作用产生形变，在外力去除时，仍然能够恢复至原来的形状以能够继续为用户所使用，从而延长MP3播放器的使用寿命。在其它实施例中，弹性金属丝11也可以由非记忆合金制成。导线12可以用于与耳机芯50以及控制电路60、电池70等进行电连接，以为耳机芯50的工作进行电量供应以及数据传输。
固定套管13用于将导线12固定于弹性金属丝11上。本实施方式中，固定套管13为至少两个，至少两个固定套管13可沿弹性金属丝11以及导线12的走向而间隔设置，并通过包裹设置在导线12以及弹性金属丝11的外围而将导线12固定于弹性金属丝11上。
在一些实施例中，接插端14和接插端15可由硬质材料，如塑胶等制成。在一些实施例中，在制作该接插端14和接插端15时，可以分别以注塑的方式将二者形成于弹性金属丝11的两端。在一些实施例中，也可以先对接插端14和接插端15分别进行注塑，并在注塑时分别预留与弹性金属丝11端部的连接孔，从而在注塑完成后，通过连接孔而将该接插端14和接插端15分别插接在弹性金属丝11的对应的端部，或者并通过粘接的方式进行固定均可。
需要指出的是，在本实施方式中，接插端14和接插端15可以不直接注塑形成在导线12的外围，而是在注塑时避开导线12。具体地，可以在注塑接插端14和接插端15时，对位于弹性金属丝11两端的导线12进行固定，以远离接插端14和接插端15的位置，并进一步在接插端14和接插端15上分别设置第一走线通道141和第二走线通道151，以在注塑完成后，将导线12沿第一走线通道141和第二走线通道151延伸设置。具体地，在形成第一走线通道141和第二走线通道151后，可将导线12以穿线的方式穿入该第一走线通道141和第二走线通道151。在一些实施例中，也可以根据实际情况，将接插端14和接插端15直接注塑在导线12的外围，此处不做具体限定。
在一些实施例中，第一走线通道141可以包括第一走线槽1411和连通第一走线槽1411的第一走线孔1412。其中，第一走线槽1411连通接插端14的侧壁面设置，第一走线孔1412的一端与第一走线槽1411的一端连通，另一端与接插端14的外端面连通。接插端14处的导线12沿第一走线槽1411和第一走线孔1412延伸并外露于接插端14的外端面，以进一步与其它结构连接。
在一些实施例中，第二走线通道151可包括第二走线槽1511和连通第二走线槽1511的第二走线孔1512。其中，第二走线槽1511连通接插端15的侧壁面设置，第二走线孔1512的一端与第二走线槽1511的一端连通，另一端与接插端15的外端面连通。接插端15处的导线12沿第二走线槽1511和第二走线孔1512延伸并外露于接插端15的外端面，以进一步与其它结构连接。
在一些实施例中，接插端14的外端面是指接插端14远离接插端15的一端的端面；相应地，接插端15的外端面是指接插端15远离接插端14的一端的端面。
在一些实施例中，保护套管16可注塑形成于弹性金属丝11、导线12、固定套管13、接插端14和接插端15的外围，从而将保护套管16分别与弹性金属丝11、导线12、固定套管13、接插端14和接插端15固定连接，而无需将保护套管16单独注塑形成后再进一步套装在弹性金属丝11以及接插端14、接插端15的外围，从而能够简化制作及装配工序，且通过这种方式，能够使得保护套管16的固定更加牢靠、稳定。
在一些实施例中，在成型保护套管16时，同时与该保护套管16一体成型有设置于靠近接插端15一侧的壳体护套17。在一些实施例中，壳体护套17可与保护套管16一体成型而成为一整体，电路壳体30可通过与接插端15的接插固定而连接设置在耳挂10的一端，壳体护套17则可进一步以套装的方式包覆于在电路壳体30的外围。
具体地，在制造MP3播放器的耳挂10时，可通过如下步骤实现：
步骤S101：利用固定套管13将导线12固定于弹性金属丝11上，其中在弹性金属丝11的两端预留出注塑位。具体地，可以先将弹性金属丝11与导线12按照预设的方式，如并排放置在一起，然后，将固定套管13进一步套设在导线12与弹性金属丝11的外围，从而将导线12固定在弹性金属丝11上。其中，由于弹性金属丝11的两端还需要注塑接插端14和接插端15，因此，在固定时，弹性金属丝11的两端不能被固定套管13完全包裹，而需预留出对应的注塑位，以供接插端14和接插端15注塑占用。
步骤S102：在弹性金属丝11的两端的注塑位上分别注塑接插端14和接插端15，其中接插端14和接插端15分别设置有第一走线通道141和第二走线通道151。
步骤S103：将导线12设置成沿第一走线通道141和第二走线通道151延伸。具体地，此处可在接插端14和接插端15成型完成后，进一步通过手动或者通过机器将导线12的两端分别穿入第一走线通道141和第二走线通道151。其中，导线12位于第一走线通道141和第二走线通道151之间的部分由固定套管13固定于弹性金属丝11上。
步骤S104：在弹性金属丝11、导线12、固定套管13、接插端14和接插端15的外围注塑形成保护套管16。
在一些实施例中，在执行步骤S104时，进一步以注塑的方式形成与接插端15外围的保护套管16一体成型的壳体护套17。
需要指出的是，在一些实施例中，也可以在安装固定套管13时先不设置导线12，而在接插端14和接插端15注塑之后，再进一步设置导线12，具体步骤如下：
步骤S201：将固定套管13套设于弹性金属丝11上，其中在弹性金属丝11的两端预留出注塑位。
步骤S202：在弹性金属丝11的两端的注塑位上分别注塑接插端14和接插端15，其中接插端14和接插端15分别设置有第一走线通道141和第二走线通道151。
步骤S203：将导线12穿设于固定套管13的内部，以利用固定套管13将导线12固定于弹性金属丝11上，并进一步将导线12设置成沿第一走线通道141和第二走线通道151延伸。
需要指出的是，通过这种方式，能够避免在对接插端14和接插端15注塑时受到导线12的干扰，从而有利于成型的顺利进行。
需要指出的是，上述实施方式中方法所涉及到的弹性金属丝11、导线12、固定套管13、接插端14、接插端15与保护套管16的结构、作用以及形成方式等均与上述实施方式中的相同，相关详细内容请参见上述实施方式，此处不再赘述。
在一些实施例中，机芯壳体20可用于容纳耳机芯50，并与接插端14接插固定。其中，耳机芯50和机芯壳体20的数量均为两个，分别对应用户的左耳和右耳。
在一些实施例中，机芯壳体20可以与接插端14通过插接、卡接等方式连接，以将机芯壳体20与耳挂10固定在一起。也就是说，本实施方式中，耳挂10与机芯壳体20可先分别成型，然后再进一步装配在一起，而不是将二者一体直接成型。
通过这种方式，可以采用各自对应的模具对耳挂10和机芯壳体20分别成型，而无需采用同一个较大尺寸的模具将二者一体成型，从而可减小模具的尺寸，以降低模具的加工难度，以及成型难度；另外，由于耳挂10和机芯壳体20分别采用不同的模具加工，在生产制造过程中，在需要对耳挂10或机芯壳体20中的某一个的形状或者构造进行调整时，仅调整该结构对应的模具即可，而无需对另外一个结构的模具进行调整，从而能够降低生产成本。当然，在其它实施方式当中，也可以根据情况而使耳挂10与机芯壳体20通过一体成型得到。
在一些实施方式中，机芯壳体20设置有与机芯壳体20的外端面21连通的接插孔22。其中，机芯壳体20的外端面21是指机芯壳体20朝向耳挂10的端面。接插孔22用于为耳挂10的接插端14插入机芯壳体20提供容置空间，以便进一步实现接插端14与机芯壳体20的接插固定。
图5是根据本申请一些实施例提供的MP3播放器的局部截面图；图6是图5中B部分的局部放大图。
结合图2、图5和图6，在一些实施例中，接插端14可以包括插入部142和两个弹性卡勾143。具体地，插入部142至少部分插入于接插孔22内并抵接于止挡块23的外侧面231上。其中，插入部142的外侧壁的形状与接插孔22的内侧壁的形状匹配，以使得插入部142至少部分插入于接插孔22内时，使得插入部142的外侧壁与接插孔22的内侧壁抵接。
止挡块23的外侧面231是指止挡块23朝向耳挂10设置的一侧面。插入部142可进一步包括一朝向机芯壳体20的端面1421，该端面1421可与止挡块23的外侧面231匹配，从而在插入部142至少部分插入于接插孔22内时，插入部142的端面1421与止挡块23的外侧面231抵接。
在一些实施例中，两个弹性卡勾143可沿垂直于插入方向并排并间隔且对称设置于插入部142朝向机芯壳体20内部的一侧。其中，每个弹性卡勾143可分别包括梁部1431和勾部1432，梁部1431与插入部142朝向机芯壳体20的一侧连接，勾部1432设置在梁部1431远离插入部142的一端，并沿垂直于插入方向延伸。进一步地，每个勾部1432设置有连接平行于插入方向的侧面与远 离插入部142的端面的过渡斜面14321。
在一些实施例中，在机芯壳体20与接插端14接插固定后，插入部142部分插入于接插孔22内，且在插入部142的外露部分呈阶梯状设置，进而形成与机芯壳体20的外端面21间隔设置的环形台面1422。插入部142的外露部分是指插入部142外露于机芯壳体20的部分，具体地，可以是指外露于机芯壳体20且靠近机芯壳体20外端面的部分。
在一些实施例中，环形台面1422可以与机芯壳体20的外端面21相对设置，且二者之间的间隔可以是指沿接插方向间隔以及沿垂直于接插方向的间隔。
在一些实施例中，保护套管16可以延伸至环形台面1422朝向机芯壳体20的外端面21的一侧，并在机芯壳体20的接插孔22与接插端14接插固定时，填充于环形台面1422与机芯壳体20的外端面21之间的间隔内，并与机芯壳体20弹性抵接，从而使得外部液体难以从接插端14与机芯壳体20之间的接合处进入机芯壳体20内部，进而实现接插端14与接插孔22之间的密封，以保护机芯壳体20内部的耳机芯50等，从而能够提高对骨传导MP3播放器的防水效果。
具体地，在一些实施例中，保护套管16在环形台面1422朝向机芯壳体20的外端面的21一侧形成一环形抵接面161。其中，该环形抵接面161为保护套管16朝向机芯壳体20一侧的端面。
其中，环形台面1422可以与机芯壳体20的外端面21相对设置，且二者之间的间隔可以是指沿接插方向间隔以及沿垂直于接插方向的间隔。
进一步地，保护套管16延伸至环形台面1422朝向机芯壳体20的外端面21的一侧，并在机芯壳体20的接插孔22与接插端14接插固定时，填充于环形台面1422与机芯壳体20的外端面21之间的间隔内，并与机芯壳体20弹性抵接，从而使得外部液体难以从接插端14与机芯壳体20之间的接合处进入机芯壳体20内部，进而实现接插端14与接插孔22之间的密封，以保护机芯壳体20内部的耳机芯50等，从而能够提高对骨传导MP3播放器的防水效果。
在一些实施例中，保护套管16在环形台面1422朝向机芯壳体20的外端面的21一侧形成一环形抵接面161。其中，该环形抵接面161为保护套管16朝向机芯壳体20一侧的端面。
在一些实施例中，保护套管16还可以包括位于该环形抵接面161内部且相对于环形抵接面161凸出设置的环形凸台162。具体地，该环形凸台162具体形成于环形抵接面161朝向接插端14的一侧，并相对于该环形抵接面161沿朝向机芯壳体20的方向凸出设置，进一步地，该环形凸台162还可直接形成于环形台面1422的外围，并覆盖该环形台面1422。
在一些实施例中，机芯壳体20可以包括用于连接机芯壳体20的外端面21和接插孔22的内侧壁的连接斜面24。该连接斜面24具体为机芯壳体20的外端面21与接插孔22的内侧壁之间的过渡面，该连接斜面24与机芯壳体20的外端面21和接插孔22的内侧壁均不在同一平面上。在一些实施例中，连接斜面24可以为平面，或者也可以根据实际需求而设置成曲面，或者其它形状，此处不做具体限定。
具体地，在机芯壳体20与接插端14接插固定时，环形抵接面161和环形凸台162分别与机芯壳体20的外端面和连接斜面24弹性抵接。需要指出的是，由于机芯壳体20的外端面21和连 接斜面24不在同一平面上，从而使得保护套管16与机芯壳体20之间的弹性抵接处不位于同一平面上，从而使得外部液体难以由保护套管16与机芯壳体20之间进入机芯壳体20以进一步进入耳机芯50，从而能够提高MP3播放器的防水效果，以对内部功能结构起到保护作用，进而延长MP3播放器的使用寿命。
在一些实施例中，插入部142在环形台面1422朝向机芯壳体20的外端面21的一侧进一步形成有与环形台面1422邻接的环形凹槽1423，其中，环形凸台162可形成于环形凹槽1423内。
在一些实施例中，耳挂10的导线12的位于机芯壳体20的外部的一端可穿过第二走线通道151而进一步连接电路壳体30所容纳的控制电路60、电池70等机芯壳体20外部的外部电路，另一端则沿第一走线通道141而露出于接插端14的外端面，并进一步随插入部142而通过接插孔22而进入机芯壳体20内部。
图7是根据本申请一些实施例提供的机芯壳体的部分结构示意图，图8是图7中D部分的局部放大图，图9是根据本申请一些实施例提供的机芯壳体的局部截面图。
结合图2、图7、图8以及图9，在一些实施例中，机芯壳体20可以包括主壳体25以及隔板组件26。其中，隔板组件26位于主壳体25内部，并与主壳体25连接，进而将主壳体25的内部空间27分隔成第一容置空间271和靠近接插孔22一侧的第二容置空间272。在一些实施例中，主壳体25可以包括周侧壁251以及与周侧壁251的一端面连接的底端壁252，周侧壁251与底端壁252共同围绕形成一主壳体25的内部空间27。
隔板组件26位于主壳体25的靠近接插孔22的一侧，并包括侧隔板261以及底隔板262。其中，侧隔板261可沿垂直于底端壁252的方向设置，且侧隔板261的两端均与周侧壁251连接，从而对主壳体25的内部空间27进行分隔。底隔板262可与底端壁252平行或者接近平行且间隔设置，并进一步分别与周侧壁251和侧隔板261连接，从而将主壳体25所形成的内部空间27一分为二而形成由侧隔板261、底隔板262和远离接插孔22的周侧壁251、底端壁252共同围成的第一容置空间271，以及由底隔板262与侧隔板261和靠近接插孔22的周侧壁251共同围成的第二容置空间272。其中，第二容置空间272可小于第一容置空间271。当然，隔板组件26也可以通过其它的设置方式对主壳体25的内部空间27进行划分，此处不做具体限定。
在一些实施例中，耳机芯包括功能组件51，该功能组件51设置于第一容置空间271内，可用于振动发声。在一些实施例中，MP3播放器还可以包括与功能组件51连接的导线80，该导线80的另一端可由第一容置空间271而延伸至第二容置空间272内。
在一些实施例中，侧隔板261可在远离底端壁252的顶部边缘设置走线槽2611，该走线槽2611可连通第一容置空间271和第二容置空间272。进一步地，导线12的远离功能组件的一端经由该走线槽延伸至第二容置空间272内。
导线12的远离电路壳体30的一端随插入部142进入机芯壳体20内部后，可进一步延伸入第二容置空间272内，并在第二容置空间272内与导线80电连接，以形成从第一容置空间271经由第二容置空间272而连接至外部电路的导线通路，从而通过该导线通路将功能组件51与位于机 芯壳体20外部的外部电路电连接。
在一些实施例中，底隔板262上还可以设置有走线孔2621，该走线孔2621将接插孔22与第二容置空间272连通，从而使得由接插孔22进入机芯壳体20的导线12能够经由该走线孔2621而延伸至第二容置空间272。
其中，导线12与导线80在第二容置空间272内连接后，盘绕设置于第二容置空间272内。具体可通过焊接的方式将导线12与导线80连接于一起，进而将功能组件51与外部电路电连接，以通过外部电路为功能组件51的正常工作提供电量或者为耳机芯50传输数据。
需要指出的是，在对骨传导MP3播放器装配时，导线往往会长于实际需求，以便于装配。然而耳机芯50处多余的导线若不能够进行合理的放置，则容易在功能组件51工作时产生振动而发出异响，从而降低骨传导MP3播放器的声音质量，从而影响用户的听音感受。本实施方式中，在机芯壳体20的主壳体25所形成的内部空间27当中分离出第二容置空间272以用于容置多余的导线12和导线80，从而避免或者减少多余的导线对因振动而对骨传导MP3播放器所发出的声音的影响，以提高声音质量。
在一些实施例中，隔板组件26进一步包括内隔板263，内隔板263进一步将第二容置空间272分隔成两个子容置空间2721。具体地，该内隔板263垂直于主壳体25的底端壁252设置，分别与侧隔板261和周侧壁251连接，并进一步延伸至走线孔2621处，从而在将第二容置空间272分隔为两个子容置空间2721的同时，还进一步将走线孔2621划分为两个，两个走线孔2621可分别与对应的子容置空间2721连通。
本实施方式中，导线12和导线80可分别为两根，其中两根导线12分别沿对应的走线孔2621而分开延伸至各自的子容置空间2721内，而两根导线80则仍一起通过走线槽2611而进入第二容置空间272，并在进入第二容置空间272后分开，并分别在对应的子容置空间2721内与对应的导线12焊接于一起，并进一步盘绕设置于对应的子容置空间2721内。
在一些实施例中，第二容置空间272可进一步由密封胶进行填充。通过这种方式，能够将第二容置空间272内所容置的导线12和导线80进一步固定，以进一步降低由于导线振动而对声音质量造成的不良影响，从而提高骨传导MP3播放器的声音质量，同时能够对导线12与导线80之间的焊接点起到保护作用，另外，将第二容置空间272密封设置还能够达到防水防尘的目的。
参照图2和图3，在一些实施例中，电路壳体30与接插端15接插固定，从而将电路壳体30固定在耳挂10远离机芯壳体20的一端。其中，在用户佩戴使用时，容纳电池70的电路壳体30和容纳控制电路60的电路壳体30可分别对应用户的左侧和右侧，二者在与对应的接插端15的接插方式上可以不同。
具体地，电路壳体30可以与接插端15通过插接、卡接等方式连接。也就是说，本实施方式中，耳挂10与电路壳体30可先分别独立成型，然后并在成型完成后再进一步装配在一起，而不是直接将二者一体成型。
通过这种方式，可以采用各自对应的模具对耳挂10和电路壳体30分别成型，而无需采用 同一个较大尺寸的模具将二者一体成型，从而可减小成型模具的尺寸，以降低模具的加工难度，以及成型难度；另外，由于耳挂10和电路壳体30分别采用不同的模具加工，在生产制造过程中，在需要对耳挂10或电路壳体30中的某一个的形状或者构造进行调整时，仅调整该结构对应的模具即可，而无需对另外一个结构的模具进行调整，从而能够降低生产成本。
在一些实施例中，电路壳体30设置有接插孔31，该接插孔31的内表面的形状可与接插端15的至少部分外表面的形状匹配，从而使得接插端15能够至少部分插入至接插孔31内。
进一步地，在接插端15的相对两侧分别设置有与接插端15相对于接插孔31的插入方向垂直设置的开槽152。具体地，两个开槽152对称且间隔设置于接插端15的相对两侧，且均在沿插入方向的垂直方向上连通接插端15的侧壁。
参照图2，电路壳体30可以呈扁平状设置，例如，电路壳体30于第二接插孔31处的横截面可以为椭圆形，或者能够形成扁平状设置的其它形状。本实施方式中，电路壳体30的面积较大的两个相对设置的侧壁为主侧壁33，连接两个主侧壁33的面积较小的且相对设置的两对侧壁为辅侧壁34。
需要注意的是，以上对MP3播放器的描述仅仅是具体的示例，不应被视为是唯一可行的实施方案。显然，对于本领域的专业人员来说，在了解MP3播放器的基本原理后，可能在不背离这一原理的情况下，对实施MP3播放器的具体方式与步骤进行形式和细节上的各种修正和改变，但是这些修正和改变仍在以上描述的范围之内。例如，固定套管13的数量不限于上述实施例中所述的至少两个，其数量也可以为一个，具体可根据实际需求而定。又例如，接插孔31处的横截面的形状不限于椭圆形，还可以为其它形状，如三角形、四边形、五边形等多边形。诸如此类的变形，均在本申请的保护范围之内。
图10是本申请一些实施例提供的骨传导扬声器的应用场景及结构示意图。请参照图10和图2，图10中的外壳1004相当于图2中机芯壳体20，图10中的驱动装置1001相当于图2中的耳机芯50。下面仅以骨传导扬声器作为示例对扬声器装置的应用场景及结构进行阐述。在一些实施例中，如图10所示，骨传导扬声器可以包括驱动装置1001、传动组件1002、面板1003(面板1003也可以称为外壳面板，为机芯壳体20上面向人体一侧的面板)、以及外壳1004等。在一些实施例中，外壳1004可以包括外壳背面和外壳侧面，通过外壳背面通过外壳侧面与面板1003相连。驱动装置1001可以通过传动组件1002将振动信号传送至面板1003和/或外壳1004，从而通过与面板1003或外壳1004与人体皮肤的接触，将声音传送至人体。在一些实施例中，骨传导扬声器的面板1003和/或外壳1004可以在耳屏处与人体皮肤接触，从而将声音传递至人体。在一些实施例中，面板1003和/或外壳1004也可以在耳廓后侧与人体皮肤接触。
在一些实施例中，驱动装置1001产生的驱动力所在直线B(或者说驱动装置的振动方向)，与面板1003的法线A具有一个夹角θ。或者说，直线B与直线A不平行。
面板上具有与使用者身体，如人体皮肤，接触或抵靠的区域。应当理解为，当面板上覆盖有其他材料(如硅胶等软性材料)以增强用户佩戴舒适感时，面板与使用者身体的关系则不为直接 接触，而是相互抵靠。在一些实施例中，当骨传导扬声器佩戴在使用者身体上后，面板的全部区域与使用者身体接触或抵靠。在一些实施例中，当骨传导扬声器佩戴在使用者身体上后，面板的部分区域与使用者身体接触或抵靠。在一些实施例中，面板上用于与使用者身体接触或抵靠的区域可以占整个面板面积的50％以上，更优选的，可以占面板面积的60％以上。一般来说，面板上与使用者身体接触或抵靠的区域可以是平面或者曲面。
在一些实施例中，当面板上用于与使用者身体接触或抵靠的区域为平面时，其法线满足法线的一般定义，即为垂直于该平面的虚线。在一些实施例中，当面板上用于与使用者身体接触或抵靠的区域为曲面时，其法线为该区域的平均法线。其中，平均法线的定义如下：
Figure PCTCN2019102397-appb-000001
其中，
Figure PCTCN2019102397-appb-000002
为平均法线；
Figure PCTCN2019102397-appb-000003
为曲面上任意一点的法线，ds为面元。
更进一步地，所述曲面为接近平面的准平面，即所述曲面上至少50％区域内任意一点的法线与其平均法线的夹角小于设定阈值的面。在一些实施例中，所述设定阈值小于10°。在一些实施例中，所述设定阈值可以进一步小于5°。
在一些实施例中，所述驱动力所在直线B与面板1003上用于与使用者身体接触或抵靠的区域的法线A’具有所述夹角θ。所述夹角θ的数值范围可以为0＜θ＜180°，进一步其数值范围可以为0＜θ＜180°且不等于90°。在一些实施例中，设定直线B具有指向骨传导扬声器外的正方向，设定面板1003的法线A(或者面板1003与人体皮肤接触面的法线A’)也具有指向骨传导扬声器外的正方向，则法线A或A’与直线B在其正方向上形成的夹角θ为锐角，即0＜θ＜90°。关于法线A与法线A’的更多描述，可以在图12及其相关描述中找到，在此不做赘述。
图11是本申请一些实施例提供的一种夹角方向的示意图。如图11所示，在一些实施例中，驱动装置产生的驱动力在XOY平面坐标系的第一象限和/或第三象限内具有分量。其中，XOY平面坐标系为一个参考坐标系，其原点O位于骨传导扬声器佩戴在人体上后，面板和/或外壳与人体的接触面上，X轴与人体冠状轴平行，Y轴与人体矢状轴平行，且X轴正方向朝向人体外侧，Y轴正方向朝向人体前方。象限应当被理解为平面直角坐标系中的横轴(如X轴)和纵轴(如Y轴)所划分的四个区域，每一个区域叫做一个象限。象限以原点为中心，X、Y轴为分界线。右上的(X轴的正半轴与Y轴的正半轴围成的区域)称为第一象限，左上的(X轴的负半轴与Y轴的正半轴围成的区域)称为第二象限，左下的(X轴的负半轴与Y轴的负半轴围成的区域)称为第三象限，右下的(X轴的正半轴与Y轴的负半轴围成的区域)称为第四象限。其中，坐标轴上的点不属于任何象限。应当理解为，本实施例所述驱动力可以直接位于所述XOY平面坐标系的第一象限和/或第三象限中，或者所述驱动力朝向其他方向，但是在所述XOY平面坐标系的第一象限和/或第三象限中的投影或分量不为0，以及在Z轴方向的投影或分量可以为0或不为0。其中，Z轴垂直于所述XOY平面，且经过所述原点O。在一些具体实施例中，驱动力所在直线与面板上与使用者身体接触或抵靠的区域的法线之间的最小夹角θ可以为任意锐角，例如夹角θ的范围优选为5°～80°；更优选为15° ～70°；再优选为25°～60°；再优选为25°～50°；再优选为28°～50°；再优选为30°～39°；再优选为31°～38°；更优选为32°～37°；更优先选为33°～36°；更优先选为33°～35.8°；更优先选为33.5°～35°。具体的，夹角θ可以是26°、27°、28°、29°、30°、31°、32°、33°、34°、34.2°、35°、35.8°、36°、37°或38°等，误差控制在0.2度以内。需要说明的是，上述对驱动力方向的说明不应理解为本申请中驱动力的限制，在其他实施例中，所述驱动力还可以在XOY平面坐标系中的第二、四象限具有分量，甚至所述驱动力还可以位于Y轴上等等。
图12是本申请一些实施例提供的骨传导扬声器作用于人体皮肤、骨骼的结构示意图。
在一些实施例中，驱动力所在的直线与驱动装置振动所在的直线共线或平行。例如，在动圈原理的驱动装置中，驱动力的方向可以与线圈和/或磁路组件的振动方向相同或相反。面板可以为平面，也可以为曲面，或者面板上具有若干凸起或凹槽。在一些实施例中，当骨传导扬声器佩戴在使用者身体上后，面板上与使用者身体接触或抵靠的区域的法线与所述驱动力所在的直线不平行。一般来说，面板上与使用者身体接触或抵靠的区域较为平坦，具体可以是平面，或者曲度变化不大的准平面。当面板上用于与使用者身体接触或抵靠的区域为平面时，其上任意一点的法线均可以作为所述区域的法线，此时，上述面板1003的法线A与面板1003与人体皮肤接触面的法线A’可以为平行或重合。当面板上用于与使用者身体接触面板为非平面时，所述区域的法线可以为其平均法线。关于平均法线的详细定义可以参见图10中的相关描述，在此不再赘述。在其他一些实施例中，当面板上用于与使用者身体接触面板为非平面时，所述区域的法线还可以如下确定，选定面板与人体皮肤接触时的一个区域中的某一点，确定面板在该点处的切平面，再确定过该点且与所述切平面垂直的直线，将该直线作为所述面板的所述法线。当面板上用于与人体皮肤接触面板为非平面时，所选的点不同，面板在该点出的切平面不同，所确定的法线也会有所差异，此时的法线A’与面板的法线A是不平行的。根据本申请一个具体实施例，所述驱动力所在直线(或驱动装置振动所在直线)与所述区域的法线具有夹角θ，所述夹角0＜θ＜180°。在一些实施例中，当指定驱动力所在直线具有经面板(或者面板和/或外壳与人体皮肤接触面)指向骨传导扬声器外的正方向，指定面板(或者面板和/或外壳与人体皮肤接触面)法线具有指向骨传导扬声器外的正方向，这两条直线在正方向上形成的夹角为锐角。
如图12所示，所述骨传导扬声器包括驱动装置(在其他实施例中也可称为换能装置)，传动组件1803，面板1801，以及外壳1802。在一些实施例中，线圈1804与磁路组件1807均为环状结构。在一些实施例中，驱动装置为动圈驱动方式，包括线圈1804及磁路组件1807。
在一些实施例中，线圈1804与磁路组件1807具有相互平行的轴线，线圈1804或磁路组件1807的轴线与线圈1804径向平面和/或磁路组件1807径向平面垂直。在一些实施例中，线圈1804与磁路组件1807具有相同的中心轴线，线圈1804的中心轴线与线圈1804径向平面垂直，且经过线圈1804的几何中心，磁路组件1807的中心轴线与磁路组件1807径向平面垂直，且经过磁路组件1807的几何中心。线圈1804或磁路组件1807的轴线与面板1801的法线具有前述夹角θ。
仅仅作为示例，下面结合图12，阐述驱动力F与皮肤变形S之间的关系。当驱动装置产生的 驱动力所在直线与面板1801法线平行时(也就是夹角θ为零)，驱动力与皮肤总形变的关系为：
F ⊥＝S ⊥×E×A/h                        (2)
其中，F ⊥为驱动力大小，S ⊥为皮肤在垂直皮肤方向的总形变，E为皮肤的弹性模量，A为面板与皮肤的接触面积，h为皮肤的总厚度(也即面板与骨骼之间的距离)。
当驱动装置的驱动力所在直线与面板上与使用者身体接触或抵靠的区域的法线垂直时(也就是夹角θ为90度)，垂直方向的驱动力与皮肤总形变的关系可以如公式(3)所示：
F //＝S //×G×A/h                         (3)
其中，F //为驱动力大小，S //为皮肤在平行皮肤方向的总形变，G为皮肤的剪切模量，A为面板与皮肤的接触面积，h为皮肤的总厚度(也即面板与骨骼之间的距离)。
剪切模量G与弹性模量E之间的关系为：
G＝E/2(1+γ)                          (4)
其中，γ为皮肤的泊松比0<γ<0.5，因而剪切模量G小于弹性模量E，对应在相同的驱动力下皮肤的总形变S //>S ⊥。通常，皮肤的泊松比接近0.4。
当驱动装置产生驱动力所在直线与面板与使用者身体接触的区域的法线不平行时，水平方向驱动力与垂直方向的驱动力分别表示为以下的公式(5)和公式(6)：
F ⊥＝F×cos(θ)                    (5)
F //＝F×sin(θ)                    (6)
其中，驱动力F与皮肤变形S之间的关系可由以下公式表示：
Figure PCTCN2019102397-appb-000004
当皮肤的泊松比为0.4时，夹角θ与皮肤总形变之间的关系的详细描述可以参考本申请的其它地方的具体内容。
图13是根据本申请一些实施例提供的骨传导扬声器的夹角-相对位移关系图。如图13所示，夹角θ与皮肤总形变之间的关系为夹角θ越大，相对位移越大，则皮肤总形变S越大。皮肤在垂直皮肤方向形变S ⊥随着夹角θ的变大，相对位移变小，皮肤在垂直皮肤方向形变S ⊥变小；并且在夹角θ接近90度时，皮肤在垂直皮肤方向形变S ⊥逐渐趋向于0。
骨传导扬声器在低频部分的音量与皮肤总变形S正相关。S越大，骨传导低频的音量越大。骨传导扬声器在高频部分的音量与皮肤在垂直皮肤方向形变S ⊥正相关。S ⊥越大，骨传导低频的音量越大。
当皮肤的泊松比为0.4时，夹角θ与皮肤总形变S，皮肤在垂直皮肤方向形变S ⊥之间的关系的详细描述可以在图13中找到。如图13所示，夹角θ与皮肤总形变S之间的关系为夹角θ越大，皮肤总形变S越大，对应骨传导扬声器的低频部分音量越大。如图13所示，夹角θ与皮肤在垂直皮肤方向形变S⊥之间的关系为夹角θ越大，皮肤在垂直皮肤方向形变S⊥越小，对应骨传导扬声器的高频部分音量越小。
通过方程(7)以及图13的曲线可以看出，随着夹角θ的增大，皮肤总形变S增大的速度与皮肤在垂直皮肤方向形变S ⊥减小的速度不同。皮肤总形变S增大的速度先变快后变慢，皮肤在垂直皮肤方向形变S ⊥减小的速度越来越快。为平衡骨传导扬声器低频与高频的音量，夹角θ要在一个合适的大小。例如θ的范围为5°～80°，或者为15°～70°，或者为25°～50°，或者为25°～35°，或者为25°～30°等等。
图14是根据本申请提供的不同夹角θ时骨传导扬声器的频率响应曲线低频段部分的示意图。如图14所示，面板与皮肤接触，将振动传递到皮肤。在这个过程中，皮肤也会影响骨传导扬声器的振动，从而影响到骨传导扬声器的频率响应曲线。从上面的分析中，我们发现夹角度越大，相同的驱动力下皮肤的总形变越大，而对应骨传导扬声器来说，相当于皮肤相对其面板部分的弹性减小。进一步地可以理解为，在驱动装置的驱动力所在直线与面板上与使用者身体接触或抵靠区域的法线形成一定夹角θ时，尤其是当夹角θ加大时，可以将频率响应曲线中的低频区域的谐振峰调节至更低频的区域，使低频下潜更深，低频增多。相对于其他提高声音中低频成分的技术手段，如在骨传导扬声器中增设传振片，设置所述夹角能够在提高低频能量的同时有效抑制振动感的增加，进而使振动感相对减少，使得骨传导扬声器低频灵敏度显著提高，提高音质和人体的体验感。应当注意的是，在一些实施例中，低频增多，振动感少可以表现为夹角θ在(0，90°)范围内增大时，振动或声音信号中的低频范围的能量增加了，同时振动感也增加了，但是低频范围的能量增加的程度比振动感增加的程度更大，因此，在相对效果上，振动感相对减小了。从图14可以看出，夹角较大时，低频区的谐振峰出现在更低频段处，可以变相地延长频率曲率平坦的部分，从而提高扬声器的音质。
需要注意的是，以上对骨传导扬声器的描述仅仅是具体的示例，不应被视为是唯一可行的实施方案。显然，对于本领域的专业人员来说，在了解骨传导扬声器的基本原理后，可能在不背离这一原理的情况下，对实施骨传导扬声器的具体方式与步骤进行形式和细节上的各种修正和改变，但是这些修正和改变仍在以上描述的范围之内。例如，驱动力所在直线与面板上用于与使用者身体接触或抵靠的区域的法线之间的最小夹角θ可以为任意锐角，此处的锐角不局限于上述的5°～80°，夹角θ可以小于5°，例如1°、2°、3°、4°等。在另一些实施例中，夹角θ可以大于80°且小于90°，例如81°、82°、85°等。在一些实施例中，夹角θ的具体数值可以不为整数(例如81.3°、81.38°)。诸如此类的变形，均在本申请的保护范围之内。
图15是根据本申请的一些实施例所示的一种骨传导扬声器的纵截面示意图。如图15所示，骨传导扬声器可以包括第一磁性元件1502、第一导磁元件1504、第二导磁元件1506、第一振动板1508、音圈1510、第二振动板1512以及振动面板1514。其中，骨传导扬声器中耳机芯的部分元件可以组成磁路组件。在一些实施例中，磁路组件可以包括第一磁性元件1502、第一导磁元件1504、第二导磁元件1506。磁路组件可以产生第一全磁场(也可被称为“磁路组件的总磁场”或“第一磁场”)。
在本申请中描述的磁性元件是指可以产生磁场的元件，例如磁铁等。所述磁性元件可以具 有磁化方向，所述磁化方向是指在所述磁性元件内部的磁场方向。在一些实施例中，第一磁性元件1502可以包括一个或多个磁铁，第一磁性元件可以产生第二磁场。在一些实施例中，所述磁铁可以包括金属合金磁铁，铁氧体等。其中，金属合金磁铁可以包括钕铁硼、钐钴、铝镍钴、铁铬钴、铝铁硼、铁碳铝，或类似的，或其中多种的组合。铁氧体可以包括钡铁氧体，钢铁氧体，美锰铁氧体，锂锰铁氧体，或类似的，或其中多种组合。
在一些实施例中，第一导磁元件1504的下表面可以连接第一磁性元件1502的上表面。第二导磁元件1506可以连接第一磁性元件1502。需要注意的是，这里所说的导磁体也可以称为磁场集中器或铁芯。导磁体可以调整磁场(例如，第一磁性元件1502产生的第二磁场)的分布。所述导磁体可以包括由软磁材料加工而成的元件。在一些实施例中，所述软磁材料可以包括金属材料、金属合金、金属氧化物材料、非晶金属材料等，例如铁、铁硅系合金、铁铝系合金、镍铁系合金、铁钴系合金、低碳钢、硅钢片、矽钢片、铁氧体等。在一些实施例中，可以通过铸造、塑性加工、切削加工、粉末冶金等一种或多种组合的方法加工所述导磁体。铸造可以包括砂型铸造、熔模铸造、压力铸造、离心铸造等；塑性加工可以包括轧制、铸造、锻造、冲压、挤压、拔制等一种或多种组合；切削加工可以包括车削、铣削、刨削、磨削等。在一些实施例中，所述导磁体的加工方法可以包括3D打印、数控机床等。第一导磁元件1504、第二导磁元件1506与第一磁性元件1502之间的连接方式可以包括粘接、卡接、焊接、铆接、螺栓连接等一种或多种组合。在一些实施例中，第一磁性元件1502、第一导磁元件1504和第二导磁元件1506可以设置为轴对称结构。所述轴对称结构可以是环状结构、柱状结构或是其它具有轴对称结构。
在一些实施例中，第一磁性元件1502与第二导磁元件1506之间可以形成磁间隙。音圈1510可以设置于所述磁间隙中。音圈1510可以与第一振动板1508连接。第一振动板1508可以连接第二振动板1512，第二振动板1512可以连接振动面板1514。当所述音圈1510内通入电流后，所述音圈1510位于在第一磁性元件1502、第一导磁元件1504和第二导磁元件1506形成的磁场，会受到安培力作用，所述安培力驱动音圈1510振动，音圈1510的振动会带动第一振动板1508、第二振动板1512和振动面板1514的振动。振动面板1514将所述振动通过组织与骨骼传递到听觉神经，从而使人听到声音。所述振动面板1514可以直接与人体皮肤接触，或可以通过由特定材料组成的振动传递层与皮肤接触。
在一些实施例中，对于具有单一磁性元件的骨传导扬声器，通过音圈处的磁感线并不均匀，呈发散状。同时磁路中可能会形成漏磁，即较多的磁感线泄漏至磁间隙以外，未能穿过音圈，从而使得音圈位置处的磁感应强度(或磁场强度)下降，影响骨传导扬声器的灵敏度。因此，骨传导扬声器100可以进一步包括至少一个第二磁性元件和/至少一个第三导磁元件(图中未示)。所述至少一个第二磁性元件和/至少一个第三导磁元件可以抑制磁感线的泄露，约束穿过音圈的磁感线形态，使得较多的磁感线尽量水平密集地穿过音圈，增强音圈位置处的磁感应强度(或磁场强度)，从而提高骨传导扬声器的灵敏度，进而提高骨传导扬声器的机械转化效率(即，将输入骨传导扬声器的电能转化为音圈振动的机械能的效率)。
图16是根据本申请的一些实施例所示的一种磁路组件2100的纵截面示意图。如图16所示，磁路组件2100可以包括第一磁性元件2102、第一导磁元件2104、第二导磁元件2106以及第二磁性元件2108。在一些实施例中，第一磁性元件2102和/或第二磁性元件2108可以包括本申请中描述的任意一种或几种磁铁。在一些实施例中，第一磁性元件2102可以包括第一磁铁，第二磁性元件2108可以包括第二磁铁，所述第一磁铁与所述第二磁铁可以相同或不同。第一导磁元件2104和/或第二导磁元件2106可以包括本申请中描述的任意一种或几种导磁材料。第一导磁元件2104和/或第二导磁元件2106的加工方法可以包括本申请中描述的任意一种或几种加工方式。在一些实施例中，第一磁性元件2102和/或第一导磁元件2104可以设置为轴对称结构。例如，第一磁性元件2102和/或第一导磁元件2104可以是圆柱体，长方体，或者中空的环状(例如，横截面为跑道的形状)。在一些实施例中，第一磁性元件2102和第一导磁元件2104可以是共轴的圆柱体，含有相同或者不同的直径。在一些实施例中，第二导磁元件2106可以是凹槽型结构。所述凹槽型结构可以包含U型的剖面(如图15所示)。所述凹槽型的第二导磁元件2106可以包括底板和侧壁。在一些实施例中，所述底板和所述侧壁可以是一体成型的，例如，所述侧壁可以由底板在垂直于底板的方向进行延伸形成。在一些实施例中，所述底板可以通过本申请中描述的任意一种或几种连接方式连接所述侧壁。第二磁性元件2108可以设定为环状或片状。在一些实施例中，第二磁性元件2108可以是环状的。第二磁性元件2108可以包括内环以及外环。在一些实施例中，所述内环和/或外环的形状可以是圆形、椭圆、三角形、四边形或其它任意多边形在一些实施例中，第二磁性元件2108可以由多个磁体排列组成。所述多个磁体的任意一个磁体的两端可以与相邻的磁体的两端连接或存在一定的间距。多个磁体之间的间距可以相同或不同。在一些实施例中，所述第二磁性元件2108可以由2个或3个片状的磁体等距排列构成。所述片状的磁体的形状可以是扇形、四边形等。在一些实施例中，第二磁性元件2108可以与第一磁性元件2102和/或第一导磁元件2104共轴。
在一些实施例中，第一磁性元件2102的上表面可以连接第一导磁元件2104的下表面。第一磁性元件2102的下表面可以连接第二导磁元件206的底板。第二磁性元件2108的下表面连接第二导磁元件2106的侧壁。第一磁性元件2102、第一导磁元件2104、第二导磁元件2106和/或第二磁性元件2108之间的连接方式可以包括粘接、卡接、焊接、铆接、螺栓连接等一种或多种组合。
在一些实施例中，第一磁性元件2102和/或第一导磁元件2104与第二磁性元件2108的内环之间形成磁间隙。音圈2128可以设置于所述磁间隙中。在一些实施例中，所述第二磁性元件2108与所述音圈2128相对于第二导磁元件2106的底板的高度相等。在一些实施例中，第一磁性元件2102、第一导磁元件2104、第二导磁元件2106以及第二磁性元件2108可以形成磁回路。在一些实施例中，磁路组件2100可以产生第一全磁场(也可被称为“磁路组件的总磁场”或“第一磁场”)，第一磁性元件2102可以产生第二磁场。所述第一全磁场由所述磁路组件2100中的所有组分(例如，第一磁性元件2102，第一导磁元件2104、第二导磁元件2106以及第二磁性元件2108)产生的磁场共同形成。所述第一全磁场在所述磁间隙内的磁场强度(也可以被称为磁感应强度或者磁通量密度)大于所述第二磁场在所述磁间隙内的磁场强度。在一些实施例中，第二磁性元件2108可以产生第三 磁场，所述第三磁场可以提高所述第一全磁场在所述磁间隙处的磁场强度。这里所说的第三磁场提高第一全磁场的磁场强度指的是，在有第三磁场存在(即，存在第二磁性元件2108)时第一全磁场在所述磁间隙的磁场强度大于没有第三磁场存在(即，不存在第二磁性元件2108)时第一全磁场的。在本说明书中的其他实施例中，除非特别说明，磁路组件表示包含所有磁性元件和导磁元件的结构，第一全磁场表示由磁路组件整体产生的磁场，第二磁场、第三磁场、……、第N磁场分别表示由相应的磁性元件所产生的磁场。在不同的实施例中，产生所述第二磁场(或者第三磁场、……、第N磁场)的磁性元件可以是相同的，也可以不同。
在一些实施例中，第一磁性元件2102的磁化方向与第二磁性元件2108的磁化方向之间的夹角在0度与180度之间。在一些实施例中，第一磁性元件2102的磁化方向与第二磁性元件2108的磁化方向与之间的夹角在45度与135度之间。在一些实施例中，第一磁性元件2102的磁化方向与第二磁性元件2108的磁化方向之间的夹角等于或大于90度。在一些实施例中，第一磁性元件2102的磁化方向垂直于第一磁性元件2102的下表面或上表面竖直向上(如图中a所示方向)，第二磁性元件2108的磁化方向由第二磁性元件2108的内环指向外环(如图中b所方向示，在第一磁性元件2102的右侧，第一磁性元件2102的磁化方向沿着顺时针方向偏转90度)。
在一些实施例中，在第二磁性元件2108的位置，所述第一全磁场的方向与第二磁性元件2108的磁化方向之间的夹角不高于90度。在一些实施例中，在第二磁性元件2108的位置处，第一磁性元件2102产生的磁场的方向与第二磁性元件2108的磁化方向之间的夹角可以是0度、10度、20度等小于或等于90度的夹角。
与单一磁性元件的磁路组件相比，第二磁性元件2108可以提高磁路组件2100中磁间隙内总磁通量，进而增加磁间隙中的磁感应强度。并且，在第二磁性元件2108的作用下，原本发散的磁感线会向磁间隙所在位置收敛，进一步增加磁间隙中的磁感应强度。
图17是根据本申请的一些实施例所示的磁路组件2600的纵截面示意图。如图17所示，磁路组件2600与磁路组件2100的不同之处在于，其可以进一步包括至少一个导电元件(例如，第一导电元件2118、第二导电元件2120以及第三导电元件2122)。
所述导电元件可以包括金属材料、金属合金材料、无机非金属材料或其它导电材料。金属材料可以包括金、银、铜、铝等；金属合金材料可以包括铁基合金、铝基合金材料、铜基合金、锌基合金等；无机非金属材料可以包括石墨等。所述导电元件可以是片状、环状、网状等。第一导电元件2118可以设置于第一导磁元件2104的上表面。第二导电元件2120可以连接第一磁性元件2102以及第二导磁元件2106。第三导电元件2122可以连接第一磁性元件2102的侧壁。在一些实施例中，第一导磁元件2104可以凸出于第一磁性元件2102形成第一凹部，第三导电元件2122设置于所述第一凹部。在一些实施例中，第一导电元件2118、第二导电元件2120以及第三导电元件2122可以包括相同或不同的导电材料。第一导电元件2118、第二导电元件2120以及第三导电元件2122可以通过本申请中描述的任意一种或多种连接方式分别连接第一导磁元件2104、第二导磁元件2106和/或第一磁性元件2102。
第一磁性元件2102、第一导磁元件2104与第二磁性元件2108的内环之间形成磁间隙。音圈2128可以设置于所述磁间隙中。第一磁性元件2102、第一导磁元件2104、第二导磁元件2106以及第二磁性元件2108可以形成磁回路。在一些实施例中，所述导电元件可以降低音圈2128的感抗。例如，若音圈2128通入第一交变电流时，音圈2128附近会产生第一交变感应磁场。第一交变感应磁场在所述磁回路中磁场的作用下，会使音圈2128产生感抗，阻碍音圈2128的运动。当在音圈2128附近设置导电元件(例如，第一导电元件2118、第二导电元件2120以及第三导电元件2122)，在所述第一交变感应磁场作用下，所述导电元件可以感生出第二交变电流。所述导电元件内的第三交变电流可以在其附近产生第二交变感应磁场，所述第二交变感应磁场与所述第一交变感应磁场方向相反，可以减弱所述第一交变感应磁场，从而减小音圈2128的感抗，增大音圈中的电流，提高骨传导扬声器的灵敏度。
图18是根据本申请的一些实施例所示的一种磁路组件2700的纵截面示意图。如图18所示，磁路组件2700与磁路组件2500的不同之处在于，磁路组件2700可以进一步包括第三磁性元件2110、第四形磁性元件2112、第五磁性元件2114、第三导磁元件2116、第六磁性元件2124以及第七磁性元件2126。第三磁性元件2110、第四磁性元件2112、第五磁性元件2114、第三导磁元件2116和/或第六磁性元件2124以及第七磁性元件2126可以设置为共轴的环形柱体。
在一些实施例中，第二磁性元件2108的上表面连接第七磁性元件2126，第二磁性元件2108的下表面可以连接第三磁性元件2110。第三磁性元件2110可以连接第二导磁元件2106。第七磁性元件2126的上表面可以连接第三导磁元件2116。第四磁性元件2112可以连接第二导磁元件2106以及第一磁性元件2102。第六磁性元件2124可以连接第五磁性元件2114、第三导磁元件2116以及第七磁性元件2126。在一些实施例中，第一磁性元件2102、第一导磁元件2104、第二导磁元件2106、第二磁性元件2108、第三磁性元件2110、第四磁性元件2112、第五磁性元件2114、第三导磁元件2116、第六磁性元件2124以及第七磁性元件2126可以形成磁回路以及磁间隙。
在一些实施例中，第一磁性元件2102的磁化方向与第六磁性元件2124的磁化方向之间的夹角可以在0度与180度之间。在一些实施例中，第一磁性元件2102的磁化方向与第六磁性元件2124的磁化方向与之间的夹角在45度与135度之间。在一些实施例中，第一磁性元件2102的磁化方向与第六磁性元件2124的磁化方向之间的夹角不高于90度。在一些实施例中，第一磁性元件2102的磁化方向垂直于第一磁性元件2102的下表面或上表面竖直向上(如图a方向所示)，第六磁性元件2124的磁化方向由第六磁性元件2124的外环指向内环(如图中g方向所示，在第一磁性元件2102的右侧，第一磁性元件2102的磁化方向沿着顺时针方向偏转270度)。在一些实施例中，在同一竖直方向上，第六磁性元件2124的磁化方向与第四磁性元件2112的磁化方向可以相同。
在一些实施例中，在第六磁性元件2124的位置处，磁路组件2700产生的磁场的方向与第六磁性元件2124的磁化方向之间的夹角不高于90度。在一些实施例中，在第六磁性元件2124的位置处，第一磁性元件2102产生的磁场的方向与第六磁性元件2124的磁化方向之间的夹角可以是0度、10度、20度等小于或等于90度的夹角。
在一些实施例中，所述第一磁性元件2102的磁化方向与第七磁性元件2126的磁化方向之间的夹角可以在0度与180度之间。在一些实施例中，第一磁性元件2102的磁化方向与第七磁性元件2126的磁化方向与之间的夹角在45度与135度之间。在一些实施例中，所述第一磁性元件2102的磁化方向与第七磁性元件2126的磁化方向之间的夹角不高于90度。在一些实施例中，第一磁性元件2102的磁化方向垂直于第一磁性元件2102的下表面或上表面竖直向上(如图a方向所示)，第七磁性元件2126的磁化方向由第七磁性元件2126的下表面指向上表面(如图中f方向所示，在第一磁性元件2102的右侧，第一磁性元件2102的磁化方向沿着顺时针方向偏转360度)。在一些实施例中，第七磁性元件2126的磁化方向与第三磁性元件2110的磁化方向可以相反。
在一些实施例中，在第七磁性元件2126处，磁路组件2700产生的磁场的方向与所述第七磁性元件2126的磁化方向之间的夹角不高于90度。在一些实施例中，在第七磁性元件2126的位置处，第一磁性元件2102产生的磁场的方向与第七磁性元件2126的磁化方向之间的夹角可以是0度、10度、20度等小于或等于90度的夹角。
在磁路组件2700中，第三导磁元件2116可以将磁路组件2700产生的磁路封闭，使得较多的磁感线集中于所述磁间隙内，从而达到抑制漏磁、增加磁间隙处的磁感应强度、及提高骨传导扬声器的灵敏度的功效。
图19是根据本申请的一些实施例所示的一种磁路组件2900的纵截面示意图。如图19所示，磁路组件2900可以包括第一磁性元件2902、第一导磁元件2904、第一全磁场改变元件2906以及第二磁性元件2908。
第一磁性元件2902的上表面可以连接第一导磁元件2904的下表面，第二磁性元件2908可以连接第一磁性元件2902以及第一全磁场改变元件2906。第一磁性元件2902、第一导磁元件2904、第一全磁场改变元件2906和/或第二磁性元件2908之间的连接方式可以基于本申请中描述的任意一种或几种连接方式。在一些实施例中，第一磁性元件2902、第一导磁元件2904、第一全磁场改变元件2906和/或第二磁性元件2908可形成磁回路及磁间隙。
在一些实施例中，磁路组件2900可以产生第一全磁场，第一磁性元件2902可以产生第二磁场，所述第一全磁场在所述磁间隙内的磁场强度大于所述第二磁场在所述磁间隙内的磁场强度。在一些实施例中，第二磁性元件2908可以产生第三磁场，所述第三磁场可以提高所述第二磁场在所述磁间隙处的磁场强度。
在一些实施例中，第一磁性元件2902的磁化方向与第二磁性元件2908的磁化方向之间的夹角可以在0度与180度之间。在一些实施例中，第一磁性元件2902的磁化方向与第二磁性元件2908的磁化方向与之间的夹角在45度与135度之间。在一些实施例中，第一磁性元件2902的磁化方向与第二磁性元件2908的磁化方向之间的夹角可以不高于90度。
在一些实施例中，在第二磁性元件2908的位置处，所述第一全磁场的方向与第二磁性元件2908的磁化方向之间的夹角不高于90度。在一些实施例中，在第二磁性元件2908的位置处，第一磁性元件2902产生的磁场的方向与第二磁性元件2908的磁化方向之间的夹角可以是0度、10度、 20度等小于或等于90度的夹角。又例如，第一磁性元件2902的磁化方向垂直于第一磁性元件2902的下表面或上表面竖直向上(如图a方向所示)，第二磁性元件2908的磁化方向由第二磁性元件2908的外环指向内环(如图中c方向所示，在第一磁性元件2902的右侧，第一磁性元件2902的磁化方向沿着顺时针方向偏转270度)。
与单一磁性元件的磁路组件相比，磁路组件2900中的第一全磁场改变元件2906可以提高磁间隙中的总磁通量，进而增加磁间隙中的磁感应强度。并且，在第一全磁场改变元件2906的作用下，原本发散的磁感线会向磁间隙所在位置收敛，进一步增加磁间隙中的磁感应强度。
图20是根据本申请的一些实施例所示的一种磁路组件3000的纵截面示意图。如图20所示，在一些实施例中，磁路组件3000可以包括第一磁性元件2902、第一导磁元件2904、第一全磁场改变元件2906、第二磁性元件2908、第三磁性元件2910、第四磁性元件2912、第五磁性元件2916、第六磁性元件2918、第七磁性元件2920以及第二环形元件2922。第一磁性元件2902、第一导磁元件2904、第一全磁场改变元件2906、第二磁性元件2908、第三磁性元件2910、第三磁性元件2910、第四磁性元件2912以及第五磁性元件2916。在一些实施例中，第一全磁场改变元件2906和/或第二环形元件2922可以包括环形磁性元件或环形导磁元件。所述环形磁性元件可以包括本申请中描述的任意一种或几种磁铁材料，所述环形导磁元件可以包括本申请中描述的任意一种或几种导磁材料。
在一些实施例中，第六磁性元件2918可以连接第五磁性元件2916以及第二环形元件2922，第七磁性元件2920可以连接第三磁性元件2910以及第二环形元件2922。在一些实施例中，第一磁性元件2902、第五磁性元件2916、第二磁性元件2908、第三磁性元件2910、第四磁性元件2912、第六磁性元件2918和/或第七磁性元件2920与所述第一导磁元件2904、第一全磁场改变元件2906以及第二环形元件2922可以形成磁回路。
在一些实施例中，所述第一磁性元件2902的磁化方向与第六磁性元件2918的磁化方向之间的夹角可以在0度与180度之间。在一些实施例中，第一磁性元件2902的磁化方向与第六磁性元件2918的磁化方向与之间的夹角在45度与135度之间。在一些实施例中，所述第一磁性元件2902的磁化方向与第六磁性元件2918的磁化方向之间的夹角不高于90度。在一些实施例中，第一磁性元件2902的磁化方向垂直于第一磁性元件2902的下表面或上表面竖直向上(如图a方向所示)，第六磁性元件2918的磁化方向由第六磁性元件2918的外环指向内环(如图中f方向所示，在第一磁性元件2902的右侧，第一磁性元件2902的磁化方向沿着顺时针方向偏转270度)。在一些实施例中，在同一竖直方向上，第六磁性元件2918的磁化方向与第二磁性元件2908的磁化方向可以相同。在一些实施例中，第一磁性元件2902的磁化方向垂直于第一磁性元件2902的下表面或上表面竖直向上(如图a方向所示)，第七磁性元件2920的磁化方向由第七磁性元件2920的下表面指向上表面(如图中e方向所示，在第一磁性元件2902的右侧，第一磁性元件2902的磁化方向沿着顺时针方向偏转360度)。在一些实施例中，第七磁性元件2920的磁化方向与第四磁性元件2912的磁化方向可以相同。
在一些实施例中，在第六磁性元件2918的位置处，磁路组件2900产生的磁场的方向与所述第六磁性元件2918的磁化方向之间的夹角不高于90度。在一些实施例中，在第六磁性元件2918的位置处，第一磁性元件2902产生的磁场的方向与第六磁性元件2918的磁化方向之间的夹角可以是0度、10度、20度等小于或等于90度的夹角。
在一些实施例中，所述第一磁性元件2902的磁化方向与第七磁性元件2920的磁化方向之间的夹角可以在0度与180度之间。在一些实施例中，第一磁性元件2902的磁化方向与第七磁性元件2920的磁化方向与之间的夹角在45度与135度之间。在一些实施例中，所述第一磁性元件2902的磁化方向与第七磁性元件2920的磁化方向之间的夹角不高于90度。
在一些实施例中，在第七磁性元件2920的位置处，磁路组件3000产生的磁场的方向与所述第七磁性元件2920的磁化方向之间的夹角不高于90度。在一些实施例中，在第七磁性元件2920的位置处，第一磁性元件2902产生的磁场的方向与第七磁性元件2920的磁化方向之间的夹角可以是0度、10度、20度等小于或等于90度的夹角。
在一些实施例中，第一全磁场改变元件2906可以是环形磁性元件。在这种情况下，第一全磁场改变元件2906的磁化方向可以与第二磁性元件2908或第四磁性元件2912的磁化方向相同。例如，在第一磁性元件2902的右侧，第一全磁场改变元件2906的磁化方向可以由第一全磁场改变元件2906的外环指向内环。在一些实施例中，第二环形元件2922可以是环形磁性元件。在这种情况下，第二环形元件2922的磁化方向可以与第六磁性元件2918或第七磁性元件2920的磁化方向相同。例如，在第一磁性元件2902的右侧，第二环形元件2922的磁化方向可以由第二环形元件2922的外环指向内环。
在磁路组件3000中，多个磁性元件可以提高总的磁通量，不同磁性元件相互作用，可以抑制磁感线泄漏，提高磁间隙处的磁感应强度，提高骨传导扬声器的灵敏度。
图21是根据本申请的一些实施例所示的一种磁路组件3100的纵截面示意图。如图21所示，磁路组件3100可以包括第一磁性元件3102、第一导磁元件3104、第二导磁元件3106以及第二磁性元件3108。
在一些实施例中，第一磁性元件3102和/或第二磁性元件3108可以包括本申请中描述的任意一种或几种磁铁。在一些实施例中，第一磁性元件3102可以包括第一磁铁，第二磁性元件3108可以包括第二磁铁，所述第一磁铁与所述第二磁铁可以相同或不同。第一导磁元件3104和/或第二导磁元件3106可以包括本申请中描述的任意一种或几种导磁材料。第一导磁元件3104和/或第二导磁元件3106的加工方法可以包括本申请中描述的任意一种或几种加工方式。在一些实施例中，第一磁性元件3102、第一导磁元件3104和/或第二磁性元件3108可以设置为轴对称结构。例如，第一磁性元件3102、第一导磁元件3104和/或第二磁性元件3108可以是圆柱体。在一些实施例中，第一磁性元件3102、第一导磁元件3104和/或第二磁性元件3108可以是共轴的圆柱体，含有相同或者不同的直径。第一磁性元件3102的厚度可以大于或等于第二磁性元件3108的厚度。在一些实施例中，第二导磁元件3106可以是凹槽型结构。所述凹槽型结构可以包含U型的剖面。所述凹槽型 的第二导磁元件3106可以包括底板和侧壁。在一些实施例中，所述底板和所述侧壁可以是一体成型的，例如，所述侧壁可以由底板在垂直于底板的方向进行延伸形成。在一些实施例中，所述底板可以通过本申请中描述的任意一种或几种连接方式连接所述侧壁。第二磁性元件3108可以设定为环状或片状。关于第二磁性元件3108的形状可参考说明书中其他地方的描述。在一些实施例中，第二磁性元件3108可以与第一磁性元件3102和/或第一导磁元件3104共轴。
第一磁性元件3102的上表面可以连接第一导磁元件3104的下表面。第一磁性元件3102的下表面可以连接第二导磁元件3106的底板。第二磁性元件3108的下表面连接第一导磁元件3104的上表面。第一磁性元件3102、第一导磁元件3104、第二导磁元件3106和/或第二磁性元件3108之间的连接方式可以包括粘接、卡接、焊接、铆接、螺栓连接等一种或多种组合。
第一磁性元件3102、第一导磁元件3104和/或第二磁性元件3108与第二导磁元件3106的侧壁之间形成磁间隙。音圈可以设置于所述磁间隙中。在一些实施例中，第一磁性元件3102、第一导磁元件3104、第二导磁元件3106以及第二磁性元件3108可以形成磁回路。在一些实施例中，磁路组件3100可以产生第一全磁场，第一磁性元件3102可以产生第二磁场。所述第一全磁场由所述磁路组件3100中的所有组分(例如，第一磁性元件3102，第一导磁元件3104、第二导磁元件3106以及第二磁性元件3108)产生的磁场共同形成。所述第一全磁场在所述磁间隙内的磁场强度(也可以被称为磁感应强度或者磁通量密度)大于所述第二磁场在所述磁间隙内的磁场强度。在一些实施例中，第二磁性元件3108可以产生第三磁场，所述第三磁场可以提高所述第二磁场在所述磁间隙处的磁场强度。
在一些实施例中，第二磁性元件3108的磁化方向与第一磁性元件3102的磁化方向之间的夹角在90度与180度之间。在一些实施例中，第二磁性元件3108的磁化方向与第一磁性元件3102的磁化方向之间的夹角在150度与180度之间。在一些实施例中，第二磁性元件3108的磁化方向与第一磁性元件3102的磁化方向相反(如图所示，a方向与b方向)。
与单一磁性元件的磁路组件相比，磁路组件3100增加了第二磁性元件3108。第二磁性元件3108磁化方向与第一磁性元件3102磁化方向相反，可以抑制第一磁性元件3102在磁化方向上的漏磁，从而使第一磁性元件3102产生的磁场可以较多地被压缩到磁间隙中，因而提高磁间隙内的磁感应强度。
需要注意的是，以上对扬声器装置的描述仅仅是具体的示例，不应被视为是唯一可行的实施方案。显然，对于本领域的专业人员来说，在了解扬声器装置的基本原理后，可能在不背离这一原理的情况下，对实施扬声器装置的具体方式与步骤进行形式和细节上的各种修正和改变，但是这些修正和改变仍在以上描述的范围之内。例如，磁路组件中的磁性元件不限于上述的第一磁性元件、第二磁性元件、第三磁性元件、第四磁性元件、第五磁性元件、第六磁性元件、第七磁性元件，还可以增加或减少磁性元件的数量。诸如此类的变形，均在本申请的保护范围之内。
在一些实施例中，以上描述的扬声器装置(例如MP3播放器)可以通过气传导的方式将声音传递给用户。当采用气传导的方式传递声音时，所述扬声器装置可以包括一个或多个声源。所述 声源可以位于用户头部的特定位置，例如，头顶、额头、脸颊、鬓角、耳廓、耳廓背面等，而不用堵塞或者覆盖耳道。出于描述的目的，图22显示一种通过气传导的方式传递声音的示意图。
如图22所示，声源2210和声源2220可以产生相位相反的声波(图中以“+”和“-”表示相位相反)。为简单起见，这里所说的声源指的是扬声器装置上输出声音的出声孔。例如，所述声源2210和声源2220可以是分别位于扬声器装置上特定位置(例如，机芯壳体20，或者电路壳体30)的两个出声孔。
在一些实施例中，声源2210和声源2220可以由同一个振动装置2201产生。所述振动装置2201包括振膜(未显示在图中)。当所述振膜受到电信号驱动而振动时，振膜正面驱动空气振动，通过导声通道2212在出声孔处形成声源2210，振膜背面驱动空气振动，通过导声通道2222在出声孔处形成声源2220。所述导声通道指的是振膜到对应出声孔的声音传播路径。在一些实施例中，所述导声通道是由扬声器上特定结构(例如，机芯壳体20，或者电路壳体30)围成的路径。需要知道的是，在一些可替代的实施例中，声源2210和声源2220还可以由不同的振动装置，分别通过不同的振膜振动产生。
由声源2210和声源2220产生的声音中，一部分传递给用户耳朵形成用户听到的声音，另一部分传递到环境中形成漏音。考虑到声源2210和声源2220距离用户耳朵的位置较近，为了描述方便，所述传递到用户耳朵的声音可以称为近场声音，所述传递到环境中的漏音可以称为远场声音。在一些实施例中，所述扬声器装置产生的不同频率的近场/远场声音与声源2210和声源2220之间的间距有关。一般说来，扬声器装置产生的近场声音会随着两个声源之间间距的增大而增大，而产生的远场声音(漏音)会随着频率的增加而增大。
针对不同频率的声音，可以分别设计声源2210和声源2220之间的间距，使得扬声器装置产生的低频近场声音(例如，频率小于800Hz的声音)尽可能大，且高频远场声音(例如，频率大于2000Hz的声音)尽可能小。为了达到以上目的，所述扬声器装置中可以包括两组或两组以上的双声源，每组双声源包含类似于声源2210和声源2220的两个声源，并分别产生特定频率的声音。具体地，第一组双声源可以用于产生低频声音，第二组双声源可以用产生高频声音。为了获得较大的低频近场声音，第一组双声源中两个声源之间的距离可以设置为较大的值。并且由于低频信号的波长较长，双声源之间较大的距离不会在远场形成过大的相位差，因而也不会在远场中形成过多的漏音。为了使得高频远场声音较小，第二组双声源中两个声源之间的距离可以设置为较小的值。由于高频信号的波长较短，双声源之间较小的距离可以避免在远场形成大的相位差，因而可以避免形成大的漏音。所述第二组双声源之间的距离小于所述第一组双声源之间的距离。
本申请实施例可能带来的有益效果包括但不限于：(1)耳挂处的保护套管与机芯壳体弹性抵接，提高了扬声器装置的防水性能；(2)通过采用不同的模具对耳挂和机芯壳体分别成型可以减小成型模具的尺寸，从而降低了模具的加工难度以及耳挂和机芯壳体生产时的成型难度；(3)通过调整面板的法线A或面板与人体皮肤接触面的法线A’与装置驱动力所在直线B之间的夹角可以改善扬声器的音质；(4)通过在磁路组件中增设磁性元件、导磁元件和导电元件，可以提高扬声器装 置的灵敏度；(5)耳挂采用弹性金属丝具有一定的弹性形变，可以适配不同耳型和头型的用户。需要说明的是，不同实施例可能产生的有益效果不同，在不同的实施例里，可能产生的有益效果可以是以上任意一种或几种的组合，也可以是其他任何可能获得的有益效果。
上文已对基本概念做了描述，显然，对于本领域技术人员来说，上述发明披露仅仅作为示例，而并不构成对本申请的限定。虽然此处并没有明确说明，本领域技术人员可能会对本申请进行各种修改、改进和修正。该类修改、改进和修正在本申请中被建议，所以该类修改、改进、修正仍属于本申请示范实施例的精神和范围。

Claims (25)

  1. 一种扬声器装置，其特征在于，包括：
    耳挂，包括第一接插端和第二接插端，所述耳挂外围包裹保护套管，所述保护套管由弹性防水材料制成；
    机芯壳体，用于容纳耳机芯，所述机芯壳体与所述第一接插端接插固定，并与所述保护套管弹性抵接；以及
    电路壳体，用于容纳控制电路或电池，所述电路壳体与所述第二接插端接插固定，所述控制电路或电池驱动所述耳机芯振动，所述耳机芯振动产生驱动力驱动所述机芯壳体上外壳面板的振动，所述驱动力所在直线与所述外壳面板的法线不平行。
  2. 根据权利要求1所述的扬声器装置，其特征在于，所述耳挂还包括：
    弹性金属丝；
    导线及固定套管，所述固定套管将所述导线固定于所述弹性金属丝上；
    所述保护套管，以注塑的方式形成于所述弹性金属丝、所述导线、所述固定套管、所述第一接插端和第二接插端的外围。
  3. 根据权利要求2所述的扬声器装置，其特征在于，所述第一接插端和第二接插端分别以注塑的方式形成于所述弹性金属丝的两端，所述第一接插端和第二接插端上分别设置有第一走线通道和第二走线通道，所述导线沿所述第一走线通道和第二走线通道延伸。
  4. 根据权利要求3所述的扬声器装置，其特征在于，所述导线以穿线方式穿入所述第一走线通道和所述第二走线通道。
  5. 根据权利要求3所述的扬声器装置，其特征在于，所述第一走线通道包括第一走线槽和连通所述第一走线槽与所述第一接插端的外端面的第一走线孔，所述导线沿所述第一走线槽和所述第一走线孔延伸并外露于所述第一接插端的外端面；
    所述第二走线通道包括第二走线槽和连通所述第二走线槽与所述第一接插端的外端面的第二走线孔，所述导线沿所述第二走线槽和所述第二走线孔延伸并外露于所述第二接插端的外端面。
  6. 根据权利要求2所述的扬声器装置，其特征在于，所述固定套管包括至少两个，并沿所述弹性金属丝间隔设置。
  7. 根据权利要求1所述的扬声器装置，其特征在于，所述机芯壳体设置有与所述机芯壳体的外端面连通的第一接插孔，所述第一接插孔的内侧壁上设置有止挡块，所述第一接插孔与第一接插端卡接连接。
  8. 根据权利要求7所述的扬声器装置，其特征在于，所述第一接插端包括插入部和两个弹性卡勾；
    所述插入部，至少部分插入于所述第一接插孔内并抵接于所述止挡块的外侧面上；
    所述两个弹性卡勾，设置于所述插入部朝向所述机芯壳体内部的一侧，两个弹性卡勾能够在外部推力和所述止挡块的作用下彼此并拢，并在经过所述止挡块后弹性回复成卡置于所述止挡块的内侧面上，实现所述机芯壳体与所述第一接插端的接插固定。
  9. 根据权利要求8所述的扬声器装置，其特征在于，所述插入部部分插入于所述第一接插孔内，且在所述插入部的外露部分呈阶梯状设置，形成与所述机芯壳体的外端面间隔设置的环形台面。
  10. 根据权利要求9所述的扬声器装置，其特征在于，所述保护套管进一步延伸至所述环形台面朝向所述机芯壳体的外端面的一侧，并在所述机芯壳体与所述第一接插端接插固定时与所述机芯壳体弹性抵接，进而实现密封。
  11. 根据权利要求1所述的扬声器装置，其特征在于，所述扬声器装置还包括固定件；所述电路壳体设置有第二接插孔，所述第二接插端至少部分插入至所述第二接插孔内通过所述固定件插接连接。
  12. 根据权利要求11所述的扬声器装置，其特征在于，所述第二接插端设置有与所述第二接插孔的插入方向垂直设置的开槽，所述电路壳体的第一侧壁上设置有与所述开槽位置对应的通孔；
    所述固定件包括两条平行设置的插脚和用于连接所述插脚的连接部；所述插脚从所述电路壳体的外侧经所述通孔插入至所述开槽，进而实现所述电路壳体与所述第二接插端的接插固定。
  13. 根据权利要求1所述的扬声器装置，其特征在于，所述耳挂还包括与所述保护套管一体成型的壳体护套，所述壳体护套以套装方式包覆于所述电路壳体的外围。
  14. 根据权利要求1所述的扬声器装置，其特征在于，所述外壳面板与所述耳机芯具有传动连接，所述外壳面板的全部或局部用于与使用者身体接触或抵靠，以传导所述耳机芯振动产生的声音。
  15. 根据权利要求14所述的扬声器装置，其特征在于，设定所述驱动力所在直线具有经面板指向扬声器装置外的正方向，设定所述法线具有指向扬声器装置外的正方向，则两条直线在其正方向上的夹角为锐角。
  16. 根据权利要求14所述的扬声器装置，其特征在于，所述耳机芯包括线圈以及磁路系统，线 圈或磁路系统的轴线与所述法线不平行；
    所述轴线与线圈径向平面和/或磁路系统径向平面垂直。
  17. 根据权利要求14所述的扬声器装置，其特征在于，所述驱动力在XOY平面坐标系的第一象限和/或第三象限内具有分量；其中，
    XOY平面坐标系的原点O位于扬声器装置与人体接触面上，X轴与人体冠状轴平行，Y轴与人体矢状轴平行，且X轴正方向朝向人体外侧，Y轴正方向朝向人体前方。
  18. 根据权利要求14所述的扬声器装置，其特征在于，所述外壳面板上用于与使用者身体接触或抵靠的区域包括平面或准平面。
  19. 根据权利要求1所述的扬声器装置，其特征在于，所述耳机芯还包括磁路组件，所述磁路组件产生第一磁场，所述磁路组件包括：
    第一磁性元件，所述第一磁性元件产生第二磁场；
    第一导磁元件；以及
    至少一个第二磁性元件，所述至少一个第二磁性元件环绕所述第一磁性元件，并与所述第一磁性元件之间形成磁间隙，所述第一磁场在所述磁间隙内的磁场强度大于所述第二磁场在所述磁间隙内的磁场强度。
  20. 根据权利要求19所述的扬声器装置，其特征在于，进一步包括：
    第二导磁元件；以及
    至少一个第三磁性元件，其中，所述至少一个第三磁性元件连接所述第二导磁元件和所述至少一个第二磁性元件。
  21. 根据权利要求20所述的扬声器装置，其特征在于，进一步包括：
    至少一个第四磁性元件，其中，所述至少一个第四磁性元件位于所述磁间隙的下方并连接所述第一磁性元件以及所述第二导磁元件。
  22. 根据权利要求19所述的扬声器装置，其特征在于，进一步包括：
    至少一个第五磁性元件，其中，所述至少一个第五磁性元件连接所述第一导磁元件的上表面。
  23. 根据权利要求22所述的扬声器装置，其特征在于，进一步包括：
    第三导磁元件，其中，所述第三导磁元件连接所述第五磁性元件的上表面，所述第三导磁元件被配置为抑制所述第一磁场的场强泄露。
  24. 根据权利要求20所述的扬声器装置，其特征在于，所述第一导磁元件连接所述第一磁性元件的上表面，所述第二导磁元件包括底板和侧壁，以及所述第一磁性元件连接所述第二导磁元件的底板。
  25. 根据权利要求20所述的扬声器装置，其特征在于，进一步包括：
    至少一个导电元件，其中，所述导电元件连接所述第一磁性元件、所述第一导磁元件，或所述第二导磁元件中的至少一个元件。
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