CN114007173A - Common magnetic field vibration bone sound conduction loudspeaker, earphone and implementation method - Google Patents
Common magnetic field vibration bone sound conduction loudspeaker, earphone and implementation method Download PDFInfo
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- CN114007173A CN114007173A CN202111450067.1A CN202111450067A CN114007173A CN 114007173 A CN114007173 A CN 114007173A CN 202111450067 A CN202111450067 A CN 202111450067A CN 114007173 A CN114007173 A CN 114007173A
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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
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/025—Magnetic circuit
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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
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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
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
-
- 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
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
- H04R1/2869—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself
- H04R1/2873—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself for loudspeaker transducers
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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
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Headphones And Earphones (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
Abstract
The application relates to the technical field of electroacoustic conversion, provides a magnetic field vibration bone acoustic conduction speaker altogether in the embodiment of this application, includes: the vibration device comprises a magnetic circuit component, a first vibration component, a second vibration component and a shell; the first vibration component and the second vibration component are both positioned in a magnetic field provided by the magnetic circuit component; the shell is provided with a sound outlet; the casing holds magnetic circuit subassembly, first vibration subassembly and second vibration subassembly, and first vibration subassembly leads to the casing vibration, and the second vibration subassembly leads to the air vibration and radiates the sound wave through the phonate hole. The invention solves the problem of sound production of the common magnetic field vibration component and the technical difficulty of leading the solid medium conduction and the air conduction sound source to be integrated in the same loudspeaker sound source in the common magnetic field, improves and increases the radiation of sound waves with various different frequencies in the medium, and leads the human ear to hear sound with more stereo, wider frequency, larger sound and better effect.
Description
Technical Field
The invention relates to the technical field of electroacoustic conversion, in particular to a common magnetic field vibration bone-acoustic conduction loudspeaker, an earphone and an implementation method.
Background
A person can hear a sound because air transmits vibration to the eardrum through the external auditory meatus, and the vibration formed through the eardrum drives the auditory nerve of the person, thereby sensing the vibration of the sound, which is air conduction. When the bone conduction speaker in the market works, the bone conduction speaker can be generally transmitted to the auditory nerve of a person through the skin, subcutaneous tissues and bones of the person, so that the person can hear the sound.
In the prior art, in order to increase the sound effect of the sound speaker, two or more speakers are generally used to emit sound waves with different frequencies, so as to improve the sound effect.
However, at present, because a magnetic field is passed through two vibration assemblies, theoretically, when the sound is produced, the sound is simultaneously acted by the same magnetic field, the vibration of the two vibration assemblies is easy to offset each other, and the vibration is considered to be an undesirable mode; moreover, the bone conduction and air conduction sound production is integrated into one loudspeaker, and the equipment for producing sound through the common magnetic field is not easy to realize due to the technical reason; there is a need for a scheme that can overcome the problem that the above-mentioned dual-vibration assembly shares a magnetic field and can produce sound better.
Disclosure of Invention
In view of the above, embodiments of the present invention provide a common magnetic field vibration bone-acoustic conduction speaker, an earphone and a realization method that overcome the above problems or at least partially solve the above problems.
In an embodiment of the present application, there is provided a common magnetic field vibration bone acoustic conduction speaker, including:
the vibration device comprises a magnetic circuit component, a first vibration component, a second vibration component and a shell;
the first vibration component and the second vibration component are both positioned in a magnetic field provided by the magnetic circuit component;
the shell is provided with a sound outlet;
the housing accommodates the magnetic circuit assembly, the first vibration assembly, and the second vibration assembly;
when the device is used, the first vibration component drives the shell to generate low-frequency vibration and transmits the low-frequency vibration to an auditory system of a human ear through human bone conduction; the second vibration component drives air to vibrate to generate medium-high frequency radiation sound waves, and the medium-high frequency radiation sound waves are transmitted out of the sound outlet hole through air.
Further, a common magnetic field vibrating bone acoustic conduction speaker, comprising:
the magnetic circuit component is used for providing a magnetic field for the first vibration component and the second vibration component;
the first vibration component provides low-frequency signal conduction, and the second vibration component provides medium-high frequency signal conduction;
the first vibration component and the second vibration component are positioned in the same magnetic field and correspondingly convert the input electric signal into first mechanical vibration and second mechanical vibration; and
the shell is provided with a sound outlet; the housing accommodates the magnetic circuit assembly, the first vibration assembly, and the second vibration assembly, the first mechanical vibration causing the housing to vibrate, the second mechanical vibration causing air to vibrate and radiating sound waves through the sound outlet; the first mechanical vibration has a first vibration frequency and a first phase, and the second mechanical vibration has a second vibration frequency and a second phase, wherein the first vibration frequency and the second vibration frequency have an absolute difference of 20 to 20000Hz, and the first phase and the second phase have an absolute difference of 90 to 180 degrees.
Furthermore, the magnetic circuit component mainly comprises a magnet, a first magnetic conductive element and a second magnetic conductive element, and two independent magnetic fields with opposite polarities are formed to drive the first vibration component and the second vibration component respectively.
Furthermore, the device also comprises a bracket, a spring plate and/or a connecting piece;
the bracket is arranged at the periphery of the magnetic circuit component; and is connected with the first vibration component and the second vibration component;
the elastic sheet is connected with the bracket and the shell; the connector is connected between the first vibration assembly and the housing.
Further, the first panel of the shell is connected with the first vibration assembly through the connecting piece.
Further, the first vibrating component and the second vibrating component share the magnetic field, and the phase difference value of the corresponding first phase and second phase is 180 degrees.
Further, the first vibration component and the second vibration component share the magnetic field, wherein the first vibration component has a first vibration frequency and a first phase, the second vibration component has a second vibration frequency and a second phase, and the first phase and the second phase have an absolute difference of 90-180 degrees.
Further, the first magnetic conducting element is a T-shaped lower magnetic conducting plate, the second magnetic conducting element is an annular upper magnetic conducting plate, the magnet between the T-shaped lower magnetic conducting plate and the annular upper magnetic conducting plate is at least one magnet, and when the magnet is formed by combining two or more magnets, the polarity of the upper magnet is opposite to that of the lower magnet.
Further, the device also comprises a first coil and a second coil; the first coil is connected with the first vibrating assembly, the second coil is connected with the second vibrating assembly, at least one part of each of the first coil and the second coil is located in the magnetic field, and the first coil and the second coil move in the magnetic field under the driving of an electric signal.
Further, the housing comprises a first panel for conducting the vibration sound wave and a housing cavity, and the first panel and the housing form a closed space; the side part of the shell cavity is provided with at least one sound outlet hole used for pushing air to transmit radiation sound waves.
Further, the frequencies of the vibration sound wave and the radiation sound wave are mutually overlapped and complemented.
In one embodiment of the present application, a headset is provided, the headset comprising a headset headband or an earhook, a sound-generating component connected to the headband or the earhook;
the sound production component is packaged with the common magnetic field vibration bone sound conduction loudspeaker.
In an embodiment of the present application, a method for implementing bone acoustic conduction by using common magnetic field vibration is provided, including:
acquiring an electric wave signal carrying audio;
correspondingly converting the electric wave signal into a first mechanical vibration signal and a second mechanical vibration signal through a preset common magnetic field, a first vibration component and a second vibration component; wherein the absolute difference value of the phase positions of the first mechanical vibration signal and the second mechanical vibration signal is 90-180 degrees, and the absolute difference value of the frequency is 20-20000 Hz;
the first mechanical vibration signal is restored to vibration type sound wave through the solid medium, and the second mechanical vibration signal is restored to air conduction sound wave through the air medium.
The application has the following advantages:
in the embodiment of the application, the magnetic circuit component, the first vibration component, the second vibration component and the shell are arranged in the shell; the first vibration component and the second vibration component are both positioned in a magnetic field provided by the magnetic circuit component; the shell is provided with a sound outlet; the housing accommodates the magnetic circuit assembly, the first vibration assembly that causes the housing to vibrate, and the second vibration assembly that causes air to vibrate and radiates sound waves through the sound outlet hole. The invention solves the problem of sound production of the common magnetic field vibration component and the technical difficulty of leading the solid medium conduction and the air conduction sound source to be integrated in the same loudspeaker sound source in the common magnetic field, improves and increases the radiation of sound waves with various different frequencies to the medium, and leads the human ear to hear sound with more stereo, wider frequency, larger sound and better effect.
Drawings
In order to more clearly illustrate the technical solutions of the present application, the drawings that are needed in the description of the present application will be briefly introduced, and it is apparent that the drawings in the following description are only some embodiments of the present application, and these exemplary embodiments will be described in detail through the drawings. These embodiments are not intended to be limiting, and in these embodiments like numerals are used to indicate similar structures, and other figures may be derived from these figures by those of ordinary skill in the art without inventive exercise.
Fig. 1 is a schematic axial sectional structure diagram of a common magnetic field vibration bone acoustic conduction speaker according to an embodiment of the present application.
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced as follows:
101. a first magnetic conductive element; 102. a second magnetic conductive element; 201. a support; 202. a housing; 301. a magnet; 401. a second coil; 402. a first coil; 501. a first vibrating assembly; 502. a spring plate; 503. A second vibrating assembly; 601. a connecting member; 701. and a sound outlet.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a common magnetic field vibration bone acoustic conduction speaker provided in an embodiment of the present application is illustrated, which specifically includes: a magnetic circuit component, a first vibration component 501, a second vibration component 503, and a case 202; the first vibration component 501 and the second vibration component 503 are both located in the magnetic field provided by the magnetic circuit component; the shell 202 is provided with a sound outlet 701; the case 202 accommodates the magnetic circuit assembly, the first vibration assembly 501, and the second vibration assembly 503; when in use, the first vibration component 501 drives the shell 202 to generate low-frequency vibration, and the low-frequency vibration is transmitted to the auditory system of human ears through human bone conduction; the second vibration component 503 drives air to vibrate to generate medium-high frequency radiation sound waves, the medium-high frequency radiation sound waves are transmitted out of the sound outlet hole 701 through the air, and the second vibration component 503 causes the air to vibrate and radiates the sound waves through the sound outlet hole 701.
It should be noted that, in the present application, the frequency range of the low-frequency vibration includes 0 to 300 Hz; the frequency range of the medium-high frequency comprises 301-20000 Hz.
The invention solves the problem of sound production of the common magnetic field vibration component and the technical difficulty of leading the solid medium conduction and the air conduction sound source to be integrated in the same loudspeaker sound source in the common magnetic field, improves and increases the radiation of sound waves with various different frequencies to the medium, and leads the human ear to hear sound with more stereo, wider frequency, larger sound and better effect.
In the above embodiment, the magnetic circuit assembly is used for providing a magnetic field; the first vibration component provides low-frequency signal conduction, and the second vibration component provides medium-high frequency signal conduction; the first vibration assembly and the second vibration assembly are positioned in the magnetic field and convert the input electric signal into a mechanical vibration signal; and a case including a first panel facing a side of a human body and a back surface opposite to the first panel, the case accommodating the first vibration member and the second vibration member, the first vibration member causing the first panel to vibrate, the vibration of the first panel having a first phase, and the vibration of the opposite back surface of the case having a second phase, wherein a first vibration frequency and the first phase of the first panel and a second vibration frequency and the second phase of the opposite back surface of the case have absolute difference values, respectively, wherein the phase difference value is 90 to 180 degrees, and the frequency difference value is 20 to 20000 Hz.
Next, a common magnetic field vibration bone acoustic conduction speaker in the present exemplary embodiment will be further described.
Referring to fig. 1, a common magnetic field vibration bone acoustic conduction speaker provided in an embodiment of the present application is illustrated, which specifically includes: a magnetic circuit component, a first vibration component 501, a second vibration component 503, and a case 202; the first vibration component 501 and the second vibration component 503 are both located in the magnetic field provided by the magnetic circuit component; the shell 202 is provided with a sound outlet 701; the case 202 accommodates the magnetic circuit assembly, the first vibration assembly 501, and the second vibration assembly 503; when in use, the first vibration component 501 drives the shell 202 to generate low-frequency vibration, and the low-frequency vibration is transmitted to the auditory system of human ears through human bone conduction; the second vibration component 503 drives air to vibrate to generate medium-high frequency radiation sound waves, and the medium-high frequency radiation sound waves are transmitted out of the sound outlet hole 701 through the air; the magnetic circuit assembly mainly includes a magnet 301, a second magnetic conductive element 102 and a first magnetic conductive element 101, and two independent magnetic fields with opposite polarities are formed to drive the first vibration assembly 501 and the second vibration assembly 502 respectively.
In the embodiment, through the structure, two different vibration assemblies are arranged in the same magnetic field, the electric signals are converted into different vibration outputs at the same time, one of the vibration is used as bone conduction vibration, the other vibration is used for pushing air to conduct sound waves, the phase and the frequency of two audio frequencies can be complemented, the two independent vibration assemblies in the same magnetic field can work at the same time, and the effect better than that of a single vibration assembly is achieved.
It should be noted that in the embodiment of the present application, the positions of the first vibration assembly 501 and the second vibration assembly 502 can be interchanged, and the same effect can be achieved.
In an embodiment of the present application, the magnetic circuit assembly comprises an annular hollow magnet 301, a first coil 402, a T-shaped first magnetic conductive element 101 and a second magnetic conductive element 102; the first magnetic conducting element 101 and the second magnetic conducting element 102 are oppositely arranged on two surfaces of the magnet 301, and the protruding part of the first magnetic conducting element 101 penetrates through the middle part of the magnet 301; the second magnetic conductive element is provided with an opening at the hollow position of the magnet 301; one end of the first coil 402 is connected to the first vibration component 501, and the other end of the first coil at least partially penetrates through the opening and is located in the middle portion, and is wound around the periphery of the protrusion of the first magnetic conductive element 101.
In the above embodiments, the magnetic conductive element may adjust the distribution of the magnetic field (e.g., the magnetic field generated by the magnet 301). In some embodiments, a magnet 301 (e.g., a magnet) may be coupled to the lower surface of the first magnetic permeable element 101 and the upper surface of the T-shaped pole to form a toroidal magnetic field with the second magnetic permeable element 102 to enhance the field density of the magnetic field.
In an embodiment of the present application, the device further includes a bracket 201, a spring 502 and/or a connecting member 601; the bracket 201 is arranged at the periphery of the magnetic circuit component; and is connected with the first vibration assembly 501 and the second vibration assembly 503; the elastic piece 502 is connected with the bracket 201 and the shell 202; the connecting member 601 is connected between the first vibration member 501 and the housing 202.
Further, the first panel of the housing 202 is connected to the first vibration assembly through the connecting member.
In the above embodiment, the bracket 201 is disposed at the periphery of the magnetic circuit assembly; and is connected with the first vibration assembly 501 and the second vibration assembly 503; the elastic piece 502 is connected with the bracket 201 and the shell 202; the elastic sheet 502 can have moderate elastic force so as to have a damping effect in the vibration transmission process, and can reduce the vibration energy transmitted to the shell, thereby effectively inhibiting the sound leakage of the bone conduction speaker caused by the shell vibration to the outside, and also helping to avoid the occurrence of abnormal sound caused by possible abnormal resonance, so as to achieve the effect of improving the tone quality.
In an embodiment of the present application, the device further includes a bracket 201, a spring 502 and/or a connecting member 601; the bracket 201 is arranged at the periphery of the magnetic circuit component; and is connected with the first vibration assembly 501 and the second vibration assembly 503; the elastic piece 502 is connected with the bracket 201 and the shell 202; the connecting member 601 is connected between the first vibration member 501 and the housing 202.
In the above embodiment, the connecting member 601 is connected between the first vibration assembly 501 and the housing 202; the connecting piece 601 can have moderate elastic force so as to have a shock absorption effect in the vibration transmission process, and can reduce the vibration energy transmitted to the shell, thereby effectively inhibiting the sound leakage of the bone conduction loudspeaker caused by the shell vibration to the outside, and also helping to avoid the occurrence of abnormal sound caused by possible abnormal resonance, and achieving the effect of improving the tone quality.
The transmission assembly (the elastic sheet 502 and the connecting member 601) located at different positions in the housing may also affect the transmission efficiency of the vibration to different degrees, and in some embodiments, the transmission assembly (the elastic sheet 502 and the connecting member 601) may enable the driving apparatus to be in different states such as suspension or support.
In an example, the elastic piece 502 and/or the connecting piece 601 may be a vibration transmission piece with a smaller thickness, and a main body of the vibration transmission piece may be a ring structure, and a plurality of struts or a plurality of connecting pieces are arranged in the ring structure; wherein, the number of the supporting rods or the connecting sheets can be two or more.
In an embodiment of the present application, the first vibration component 501 and the second vibration component 503 share the same magnetic field provided by the magnet 301, wherein the first vibration component 501 has a first vibration frequency and a first phase, the second vibration component 503 has a second vibration frequency and a second phase, and the first phase and the second phase have an absolute difference of 90-180 degrees; in this application, the phase difference between the first phase and the second phase is preferably set to 180 degrees.
In the above embodiment, the phases and frequencies of the vibrations with different frequencies and phases can be complemented, and the low frequency and the middle and high frequency can be complemented in the same speaker or a sound generating device mainly using the speaker, so as to further improve the audio effect and reduce the distortion.
In an embodiment of the present application, the first magnetic conducting element 101 is a T-shaped lower magnetic conducting plate, the second magnetic conducting element 102 is an annular upper magnetic conducting plate, and the magnet 301 between the T-shaped lower magnetic conducting plate and the annular upper magnetic conducting plate is at least one magnet, wherein when the magnet 301 is formed by combining two or more magnets, a polarity of one of the magnets is opposite to a polarity of a next magnet.
In the above embodiments, one or 2 magnet combinations of opposite polarity are added to enhance the magnetic field to improve the output sensitivity and vibration amplitude of the speaker and the device comprising the speaker, such as a headphone.
As an example, the magnet 301 described in the present application refers to an element that can generate a magnetic field, such as a magnet or the like. The magnetic element may have a magnetization direction, which refers to a direction of a magnetic field inside the magnetic element. The magnet 301 may comprise one or more magnets. In some embodiments, the magnet may comprise a metal alloy magnet, ferrite, or the like. Wherein the metal alloy magnet may comprise neodymium iron boron, samarium cobalt, alnico, iron chromium cobalt, aluminum iron boron, iron carbon aluminum, or the like, or combinations thereof. The ferrite may comprise barium ferrite, steel ferrite, manganese ferrite, lithium manganese ferrite, or the like, or various combinations thereof.
In an embodiment of the present application, a first coil 402 and a second coil 401 are further included; the first coil 402 is connected to the first vibration component 501, and the second coil 401 is connected to the second vibration component 503, wherein at least a portion of each of the first coil 402 and the second coil 401 is located within the magnetic field and moves within the magnetic field under the driving of an electrical signal.
In the above embodiment, after the power is turned on, the coil vibrates under the action of an ampere force, the vibration of the coil is transmitted to the first panel and/or the housing through the first transmission assembly 501, the coil interacts with the magnetic circuit assembly through a magnetic field, the reaction force applied to the magnetic circuit assembly further vibrates, the vibration of the magnetic circuit assembly is transmitted to the first panel and/or the housing through the second vibration assembly 502, and in some specific implementations, the connection member 601 serves as a transmission assembly and may include a connection rod, a connection column, a vibration transmission piece and/or the like.
In one embodiment of the present application, the housing 202 includes a first panel for conducting vibrational sound waves and a back side of an enclosure for propelling air to transmit radiated sound waves.
Further, the frequencies of the vibration sound wave and the radiation sound wave are mutually superposed and complemented.
In the above embodiment, the first panel has a first vibration transmitted through skin, subcutaneous tissue and bone of a person, and the vibration of the opposite back surface of the housing has a second vibration transmitted by radiating a sound wave by pushing air. So that bone conduction sound waves and air radiation sound waves can complement each other.
The embodiment of the application also discloses an earphone which is a common magnetic field vibration bone sound conduction earphone and comprises an earphone head band or an ear hook and a sound production part connected with the head band or the ear hook; when the headband (the headband is the headband of the headset) is additionally connected with the sound production part, the headset is a headband type headset; when the ear hook is connected with the sound generating part, the earphone is an ear hook earphone; the sound production component is packaged with the common magnetic field vibration bone sound conduction loudspeaker. When in use, the sounding component is attached near the human ear of the human body and conducts sound to the human ear through bone conduction; the sound outlet radiates sound waves to transmit the sound to the human ear through the air.
In an embodiment of the present application, a method for implementing bone acoustic conduction by using common magnetic field vibration includes:
acquiring an electric wave signal carrying audio;
correspondingly converting the electric wave signal into a first mechanical vibration signal and a second mechanical vibration signal through a preset common magnetic field, a first vibration component and a second vibration component; wherein the absolute difference value of the phases of the first mechanical vibration signal and the second mechanical vibration signal is 90-180 degrees, and the frequency difference value is 20-20000 Hz;
the first or second mechanical vibration signal is restored to the air conduction sound wave through the air medium, and the other mechanical vibration signal is output to the vibration sound wave through the solid medium.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
While preferred embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the embodiments of the invention.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.
The common magnetic field vibration bone sound conduction loudspeaker, the earphone and the implementation method provided by the application are introduced in detail, specific examples are applied in the description to explain the principle and the implementation mode of the application, and the description of the above embodiments is only used for helping to understand the method and the core idea of the application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (10)
1. A common magnetic field vibrating bone acoustic conduction speaker, comprising: the vibration device comprises a magnetic circuit component, a first vibration component, a second vibration component and a shell;
the first vibration component and the second vibration component are both positioned in a magnetic field provided by the magnetic circuit component;
the shell is provided with a sound outlet;
the housing accommodates the magnetic circuit assembly, the first vibration assembly, and the second vibration assembly;
when the vibration device is used, the first vibration component drives the shell to generate low-frequency vibration and transmits the low-frequency vibration to human ears through human skeleton conduction; the second vibration component drives air to vibrate to generate medium-high frequency radiation sound waves, and the medium-high frequency radiation sound waves are transmitted out of the sound outlet hole through air.
2. A common magnetic field vibrating bone acoustic conduction speaker as claimed in claim 1, wherein said magnetic circuit assembly mainly comprises a magnet, a first magnetic conductive element and a second magnetic conductive element, forming two independent magnetic fields of opposite polarity to drive said first vibrating assembly and said second vibrating assembly respectively.
3. A co-magnetic field vibrating bone acoustic conduction speaker according to claim 2, further comprising a bracket, a spring and/or a connector;
the bracket is arranged at the periphery of the magnetic circuit component; and is connected with the first vibration component and the second vibration component;
the elastic sheet is connected with the bracket and the shell; the connector is connected between the first vibration assembly and the housing.
4. A co-magnetic field vibrating bone acoustic conduction speaker according to claim 1, wherein the magnetic field is shared by the first vibrating assembly and the second vibrating assembly, wherein the first vibrating assembly has a first vibration frequency and a first phase, the second vibrating assembly has a second vibration frequency and a second phase, and the first phase and the second phase have an absolute difference of 90-180 degrees.
5. The common-magnetic-field vibrating bone-sound conduction speaker according to claim 2, wherein the first magnetic conductive element is a T-shaped lower magnetic conductive plate, the second magnetic conductive element is an annular upper magnetic conductive plate, and the magnet between the T-shaped lower magnetic conductive plate and the annular upper magnetic conductive plate is at least one magnet, wherein when the magnet is formed by combining two or more magnets, the polarity of one of the magnets is opposite to that of the next magnet.
6. A common magnetic field vibrating bone acoustic conduction speaker as claimed in claim 1, further comprising a first coil and a second coil; the first coil is connected with the first vibrating assembly, the second coil is connected with the second vibrating assembly, at least one part of each of the first coil and the second coil is located in the magnetic field, and the first coil and the second coil move in the magnetic field under the driving of an electric signal.
7. A common magnetic field vibration bone acoustic conduction speaker as claimed in claim 1, wherein the housing comprises a first panel for conducting vibrational sound waves and a housing cavity, the first panel and the housing forming an enclosed space; the side part of the shell cavity is provided with at least one sound outlet hole used for pushing air to transmit radiation sound waves.
8. A co-magnetic field vibrating bone acoustic conduction speaker as claimed in claim 7, wherein the frequencies of the vibrating sound wave and the radiating sound wave are complementary to each other by superposition.
9. The earphone is characterized by comprising an earphone head band or an ear hook, and a sound production part connected with the head band or the ear hook;
the sound emitting component encapsulates the co-magnetic field vibrating bone acoustic conduction speaker according to any one of claims 1-8.
10. A method for realizing bone acoustic conduction by virtue of common magnetic field vibration is characterized by comprising the following steps:
acquiring an electric wave signal carrying audio;
correspondingly converting the electric wave signal into a first mechanical vibration signal and a second mechanical vibration signal through a preset common magnetic field, a first vibration component and a second vibration component; wherein the absolute difference value of the phase positions of the first mechanical vibration signal and the second mechanical vibration signal is 90-180 degrees, and the absolute difference value of the frequency is 20-20000 Hz;
the first mechanical vibration signal is restored to vibration type sound wave through the solid medium, and the second mechanical vibration signal is restored to air conduction sound wave through the air medium.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111450067.1A CN114007173A (en) | 2021-11-30 | 2021-11-30 | Common magnetic field vibration bone sound conduction loudspeaker, earphone and implementation method |
| PCT/CN2021/137020 WO2023097747A1 (en) | 2021-11-30 | 2021-12-10 | Common magnetic field vibration bone sound conduction loudspeaker, earphone, and common magnetic field vibration bone sound conduction implementation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111450067.1A CN114007173A (en) | 2021-11-30 | 2021-11-30 | Common magnetic field vibration bone sound conduction loudspeaker, earphone and implementation method |
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| Publication Number | Publication Date |
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| CN114007173A true CN114007173A (en) | 2022-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111450067.1A Pending CN114007173A (en) | 2021-11-30 | 2021-11-30 | Common magnetic field vibration bone sound conduction loudspeaker, earphone and implementation method |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN114007173A (en) |
| WO (1) | WO2023097747A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115278476A (en) * | 2022-05-10 | 2022-11-01 | 荣耀终端有限公司 | Audio transducer and wearable audio output device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4952211B2 (en) * | 2006-11-22 | 2012-06-13 | コスモギア株式会社 | Bone conduction earphone |
| US20140185822A1 (en) * | 2012-12-28 | 2014-07-03 | Panasonic Corporation | Bone conduction speaker and bone conduction headphone device |
| CN105681982A (en) * | 2016-01-08 | 2016-06-15 | 费艳锋 | Novel bone conduction loudspeaker and bone conduction earphone |
| CN114615602A (en) * | 2019-01-05 | 2022-06-10 | 深圳市韶音科技有限公司 | Bone conduction loudspeaker |
| CN111193985B (en) * | 2020-03-13 | 2021-06-01 | Oppo广东移动通信有限公司 | Mobile terminal |
| CN113286232A (en) * | 2021-05-26 | 2021-08-20 | 东莞立讯精密工业有限公司 | Loudspeaker structure |
-
2021
- 2021-11-30 CN CN202111450067.1A patent/CN114007173A/en active Pending
- 2021-12-10 WO PCT/CN2021/137020 patent/WO2023097747A1/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115278476A (en) * | 2022-05-10 | 2022-11-01 | 荣耀终端有限公司 | Audio transducer and wearable audio output device |
| CN115278476B (en) * | 2022-05-10 | 2023-07-25 | 荣耀终端有限公司 | Audio transducer and wearable audio output device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023097747A1 (en) | 2023-06-08 |
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