CN209882011U - Noise-reducing and radiation-proof earphone - Google Patents

Noise-reducing and radiation-proof earphone Download PDF

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Publication number
CN209882011U
CN209882011U CN201920424627.8U CN201920424627U CN209882011U CN 209882011 U CN209882011 U CN 209882011U CN 201920424627 U CN201920424627 U CN 201920424627U CN 209882011 U CN209882011 U CN 209882011U
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China
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noise
sound
small
microphone
earphone
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Expired - Fee Related
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CN201920424627.8U
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Chinese (zh)
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诸爱道
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Individual
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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
    • 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
    • H04R1/1083—Reduction of ambient noise
    • 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
    • H04R1/2807—Enclosures comprising vibrating or resonating arrangements
    • H04R1/2811—Enclosures comprising vibrating or resonating arrangements for loudspeaker transducers
    • 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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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Headphones And Earphones (AREA)

Abstract

The utility model relates to a radiation protection earphone of making an uproar falls, mainly set up the audio signal conversion system of making an uproar falls, the transmission that effectively falls the active audio signal of making an uproar is converted into passive audio signal's transmission, can resume active audio signal transmission again after reaching 1000mm very much, still set up one kind in addition and used the remote microphone of air duct direct drive, two methods homoenergetic make the radiation of human long distance isolated communication machine and solved the microphone and must put the technical problem outside the air duct, solve and wait for a long time and receive the problem that the brain was hurt in electric appliance and other communication machines accumulation. The utility model is a good safety earphone which can not only protect the radiation with high intensity but also prevent the noise.

Description

Noise-reducing and radiation-proof earphone
Technical Field
The utility model relates to a radiation protection or fall and make an uproar radiation protection earphone, more specifically say, involve a radiation protection earplug and the stereo radiation protection earplug that are used for the communications facilities that high-frequency magnetic field such as cell-phone etc. radiated stronger, especially involve a frequency response and really improve, can produce the earplug of better stereophonic effect moreover, the frequency response of line control earphone than traditional still will be good.
Background
A common earphone, such as an earphone worn on a mobile phone or other communication equipment, comprises a plug, a wire and an earphone head, wherein a micro-speaker is arranged in the earphone head. Because the mobile phone is directly used for making and receiving calls, harmful radiation rays such as an ultrahigh frequency magnetic field and the like generated by the mobile phone can seriously stimulate brain nerves of people and influence the health of the people, people often use the earphone to make and receive the mobile phone so as to reduce the damage of the ultrahigh frequency word field, electric waves, heat energy and other radiation rays to the brain of the human body. However, conventional ear-bud headsets that use a speaker mounted directly in the ear-bud head still do not avoid the risk of direct brain damage from radiation, such as uhf words, being transmitted through the ear-bud head to the interior of the ear. In addition, the high 1600 gauss permanent magnet magnetic field carried by the earplug head with the built-in loudspeaker can also cause damage to the human brain. Therefore, the symptoms such as headache, dizziness, and head numbness are easy to occur when the mobile phone or the earplug is used for a long time and frequently.
The earphone for preventing electromagnetic wave radiation in the prior art has the following patent numbers: ZL02244828.4, name: the non-radiation earphone can reduce electromagnetic radiation, but one of the earphone only has a sound wave channel of 5-10cm, and the other earphone does not have a metal shielding isolation line, so that the requirement of 2mG (milligauss, the same below) or less than 2mG cannot be met, and the requirement of the doctor professor of Taiwan traffic university of the mobile phone utility model, namely doctor of American Stanford university, doctor of American engineering institute, Taiwan traffic university is met because the electromagnetic field and the electromagnetic wave are harmful to human bodies because the metal shielding isolation line is not arranged at the other earphone and the metal shielding isolation line is controlled to be less than 2mG or 2 mG. Therefore, the earphone of the prior art does not satisfy the above-mentioned electromagnetic wave radiation requirement. Therefore, the frequency response is not good; the utility model discloses the patent number of people application does: 200810167226.5, the name is: the application document of the noise-reducing radiation-proof earphone also discloses five utility models of the noise-reducing radiation-proof earphone, discloses a method for realizing radiation protection and a method for improving tone quality, and has obtained nine national patents in the world, but the tone quality of the patent does not exceed that of the traditional earphone, the safety earphone applied by the Japanese applicant of 5.7.20121 is disclosed, and the application number is 201710417231.6, so that the effect of radiation protection can be improved, and the non-radiation effect is achieved.
In view of the foregoing, there is a great need for an earphone that can actually prevent electromagnetic radiation with high performance and have a better frequency response than conventional earphones, an earphone that has a truly improved frequency response, and an earphone that has a non-radiative and better stereophonic effect.
SUMMERY OF THE UTILITY MODEL
The utility model relates to a safe earphone, mainly include the safe earphone of drive-by-wire formula and the safe earphone of wear-type, a plurality of loudspeakers that have adopted different frequency response supply two ears to listen respectively, so frequency response is particularly good, better than traditional earphone, and set up the special scheme of noise reduction, more importantly set up noise reduction audio signal conversion system, effectively convert the transmission of active noise reduction audio signal into the transmission of passive audio signal, resume the transmission of active audio signal to make the passive signal transmission of air duct can be arranged in 1000mm length or length beyond 1000mm, because set up the metal shielding insulated wire so that the radiation of human long distance isolated communicator, but the microphone still keeps very close distance with the pronunciation mouth, thereby reached well noise reduction and reached high ground radiation protection effect and have high tone quality, solved the technical problem that the existing radiation protection earphone microphone must be arranged outside the air duct, the sound is small because the effect is poor when the microphone is far away from the microphone.
The utility model is a safe earphone with high radiation resistance, high sound quality and noise resistance.
A noise-reducing radiation-proof earphone structurally comprises a left ear hearing cover, a sound cavity cover, a left ear shell, a right ear hearing cover, a right ear shell, a head band, a switch shell, a noise-reducing transmission arm, a noise-reducing converter, a left shell, a loudspeaker shell and a plug; is provided with a noise reduction conversion system
: a noise reduction primary microphone 280 is used for converting an active audio signal into a passive audio signal for transmission, and then the active audio signal is recovered for transmission, a primary microphone lead is arranged to be connected with a secondary audio amplifier circuit to push a loudspeaker, the amplification power, the stage number and the performance of the circuit are selected according to the length and the diameter of a selected vibrating diaphragm air conduit, a sound producing port of the loudspeaker is connected with the large end of a sound wave concentrator, the small end of the sound wave concentrator is connected with one end of the vibrating diaphragm air conduit through a rivet, the other end of the vibrating diaphragm air conduit is connected with the small end of a horn mouth sound cavity, and the large end of the horn mouth sound cavity is connected with a telephone receiving surface of a secondary microphone; the connection from the sound-producing port of the loudspeaker to the receiver surface of the secondary microphone through the air conduit is sealed; the other end of the secondary microphone is connected with one end of a metal shielding isolation wire through a lead, the other end of the metal shielding isolation wire is connected with one end of a plug, and the other end of the plug is connected with a socket of the communication machine;
the active part of the conversion system is provided with an electronic circuit board, a battery supply circuit, a power supply of devices, a charging circuit, a charging socket, a power supply indicating light-emitting tube and a power switch, wherein the charging circuit and the charging socket are connected with the battery, the devices of active audio signals of the conversion system are all arranged in a shell of the converter, a loudspeaker of the conversion system is arranged in the middle of a microphone or on the outer side of a sound cavity of a left ear shell at a certain distance from the primary microphone, and different chips and different circuits can be selected by the circuit according to the amplification power of the vibrating diaphragm air conduit length changing circuit.
The microphone adopts the mode that the active transmission is converted into the passive transmission and then the active transmission is recovered, so that the air conduit can be arranged to be very long, and the microphone is very close to the sounding port, so that the noise reduction effect is achieved, and the extremely high effect of preventing the communication machine from damaging ears and brain is achieved.
One end of the left ear air conduit is connected with the inlet of the sounding cavity, the other end of the left ear air conduit is connected with the small end of the sound wave concentrator, the large end of the sound wave concentrator is connected with the loudspeaker, the other end of the loudspeaker is connected with the metal shielding wire through a lead, the other end of the right ear air conduit is connected with the right ear sounding cavity, the other end of the inlet is parallel to the loudspeaker shell through the left ear shell and the left ear air conduit along the outer side or the inner side of the metal bow, the small end of the right ear sound wave concentrator is connected with the right ear loudspeaker, the other end of the right ear loudspeaker is connected with the metal shielding wire through a lead, one end of the other section of metal shielding wire is connected. Or the left and right ear speakers, the left and right ear acoustic wave concentrators and the secondary microphone are arranged in the switch shell, the connection mode is unchanged, the outlet of the sound cavity is provided with a single hole or a plurality of small holes, the convection holes of the speakers are arranged towards the outside of the installed shell, and the microphones and the speakers are isolated;
the three air ducts are bonded in parallel, or the three air ducts are combined into a whole and wrapped by a flexible material, or the three air ducts are controlled into a whole without being surrounded by any material;
or the air duct with the right ear is obliquely pulled from the loudspeaker shell to be connected with the inlet of the sounding cavity of the right ear, namely the air duct is not led along the metal bow;
or the three air ducts are led out from the front of the switch of the loudspeaker shell for sending the audio signals from the communicator, or all the air ducts are led out from the E surface, namely the E surface shown in fig. 29, and are connected into the left ear shell;
when the device is assembled, each seam of the shell needs to be glued, sealed and waterproof.
The noise-reducing and radiation-proof earphone, the air duct microphone for remote noise reduction,
further is provided with
The vibrating membrane is arranged at the big end of the sound wave concentrator, a cover is added outside the vibrating membrane, and a plurality of through holes are formed in the cover and fasten the vibrating membrane at the big end of the sound wave concentrator. The small end of the sound wave concentrator is connected with one end of an air conduit, the other end of the air conduit is connected with the small end of the other horn mouth, the large end of the horn mouth is connected with a small microphone, all the joints from the receiving surface of the small microphone to the periphery of the cover are sealed, the surface of the small microphone exposed outside the sound wave concentrator is sealed in a sleeving way, and the angles of the sound wave concentrator and the horn mouth are 90-160 degrees;
the lead of the small microphone is connected with a signal amplifier, the amplified power is determined according to actual needs, and the output end of the signal amplifier is connected with a metal shielding isolation wire and then is connected with a communication machine through a connector;
or the small microphone is directly connected with the metal shielding isolation wire to the communication machine, and if the impedance of the small microphone is not matched, the small microphone is connected to the metal shielding isolation wire at the output end of the small microphone through the impedance transformer and then connected to the communication machine;
the length of the air guide pipe is set to be 30mm to 1500mm, the hole is 1mm to 5mm, and the length and the hole diameter are selected randomly according to specific requirements;
the device can install all small microphones of the noise-reduction radiation-proof earphone into the bell mouth to replace the small microphone of the technology which is arranged at the position outside the length of the air duct for listening to the voice; or the cover, the vibrating membrane, the sound wave concentrator and the air conduit form a sound transmission cylinder, and the sound transmission cylinder can connect wheat microphones at different or far positions of the mouth with bellmouths with different sizes to the mouth side by the air conduits with different lengths, thereby achieving the purpose of noise reduction and the effect of radiation protection;
a structure of an air duct microphone pickup is described:
the vibrating diaphragm of the air conduit microphone is arranged on the sound wave concentrator with the bent pipe, the sound wave concentrator is buckled into the upper cover by an inverse buckle, the rear cover is buckled into the upper cover by the inverse buckle, the pipe cavity of the sound wave concentrator with the bent pipe is inserted into the universal transmission arm to form the air conduit, and the air conduit is connected to various small microphones to be selected by switching.
The noise-reducing and radiation-proof earphone as described above,
a single-track circuit double-ear head-wearing type all-air duct noise-reduction radiation-proof earphone is described, which is characterized in that:
the signal from the plug is connected to the big loudspeaker from the answering signal line of the audio signal line of the metal shielding isolation line of the communication machine connected signal, the other end of the big loudspeaker is connected with the big end of the sound wave concentrator, the small end of the sound wave concentrator is connected with the big pipe of the composite air conduit, the other end of the big pipe is connected with the long end of the tee joint and is tied tightly by the binding tape, the other end of the tee joint is connected with the sealing ring, the other end of the sealing ring is connected with the right ear branch air conduit, the other end of the right ear branch air conduit is connected with the sealing ring, the other end of the sealing ring is connected with the elbow, the other end of the elbow is connected with the sound cavity, the bottom surface of the elbow is provided with a mounting plate which is fixed in the;
a small through pipe is arranged on the tee joint, a small sound wave concentrator is arranged at one end of the small through pipe and connected with the tee joint, the other end of the small through pipe is connected with a small sound cavity, a sound cavity cover plate is arranged on the small sound cavity, and the sound cavity cover plate is provided with a plurality of penetrating small holes or the small through pipe is combined with the sound cavity;
the structure is provided with a movable groove to enable the bow frame and the right ear branch air guide pipe to move at a set swing angle, and the sealing ring is arranged at the axle center of the swing and made of flexible materials such as rubber and the like, so that the bow frame and the right ear air guide pipe can move flexibly and the transmission of sound waves is unimpeded;
the inner diameter of the small through pipe is much smaller than that of the tee joint, and the specific size is calculated and determined by the attenuation value of the branch pipe leading to the right ear or adjusted to the sound volume of ears at two sides to be consistent;
the bottom of tee bend is equipped with the mounting panel, is equipped with the aperture on the mounting panel, installs on the bottom surface of left ear shell 276 and sets for the locating pin with the screw, installs the tee bend on left ear shell bottom surface accurately. The joint between the cover plate of the right ear sound cavity and the cover plate of the left ear sound cavity, which is always from the sound outlet of the big loudspeaker, is completely sealed, so that sound waves can not leak, and the sound emitted by the big loudspeaker is completely sent to the left ear and the right ear to be heard.
If the volume is too small or an audio amplifier circuit is arranged at the front end of the big loudspeaker, the amplifier circuit is arranged in the shell of the big loudspeaker, the amplification power of the amplifier circuit is selected according to the requirement, and the current is connected with the power supply from the communication machine;
a complete noise-reducing receiving conversion system is arranged: the noise-reducing primary microphone pushes the loudspeaker through the amplifying port, the sound outlet of the loudspeaker is connected with the large end of the sound wave concentrator, the small end of the sound wave concentrator is connected with the small air conduit, the small air conduit penetrates into the left ear shell from the noise-reducing universal transmission arm and is connected to the hard connector, the other end of the hard connector is inserted into one end of the small pipe of the composite air conduit, the other end of the small pipe of the composite air conduit is connected with the bent hard pipe and penetrates through the isolation plate to be connected to the small end of the small sound wave concentrator through the small hose, the large end of the small sound wave concentrator is connected with the telephone receiving face of the secondary microphone, the lead of the secondary microphone is connected to the telephone receiving wire of the metal shielding isolation wire through the control of the switch, the switch can cut off the telephone receiving system, the opposite side can not hear or hear the speech of a user, and then is connected with the communication machine through the connector, the, the light-transmitting body of the indicator light is injected on the shell of the converter, the switch is provided with a switch for controlling the on-off of a power supply, the switch is sealed by a rubber pad, a waterproof charging jack is arranged for charging a battery, an insertion type isolation plate is arranged between the loudspeaker and the amplifying circuit as well as the primary microphone and inserted into a groove plate, a flexible material is placed in the groove plate for sealing, the wiring of the loudspeaker penetrates through the isolation plate and is sealed by glue, the shell of the converter is fixed on the universal arm by screws or fixed on the universal arm by injection molding, one pipe of the arranged composite air conduit is provided with two pipes, the appearance of the composite air conduit is only one, and two passages are actually formed, so;
or the bent hard pipe is directly combined with the tee joint into a whole to form the five-way joint, one end of the combined bent pipe is the same as the original connecting mode, the other end of the bent pipe is connected with one end of a sealing ring, the other end of the sealing ring is connected with an air conduit in a universal transmission arm, the air conduit at the other end of the universal transmission arm is connected with the small end of a sound wave concentrator, the large end of the sound wave concentrator is provided with a vibrating diaphragm for connection, the structure and the connecting mode of the original tee joint part are unchanged, the universal transmission arm is processed into a bolt with two planes, the bolt is inserted into a hole matched with the shell of the left;
the isolating plate is arranged in the shell to isolate the large loudspeaker from the secondary telephone receiver so as to prevent the large loudspeaker from interfering the secondary microphone.
The noise-reducing and radiation-proof earphone as described above,
the characteristics are as follows:
the structure of the noise reduction microphone of the monaural circuit binaural head-wearing type all-air duct noise reduction radiation-proof earphone is a device for converting an active audio signal into a passive signal and recovering the passive signal to the active audio signal.
The conduction mode of the noise reduction microphone is different from that of the noise reduction microphone, and the rest structures are the same as the noise reduction safety structure.
The microphone is characterized in that an air conduit microphone is applied, the end of a universal transmission arm is provided with a shell, a sound transmission tube is arranged in the shell and comprises a cover, a vibrating membrane, a sound wave concentrator and a small air conduit, the small air conduit penetrates into the shell of a left ear from a noise reduction universal transmission arm and is connected to a hard connector, the other end of the hard connector is inserted into one end of a small pipe of a composite air conduit, the other end of the small pipe of the composite air conduit is connected with a bent hard pipe and penetrates through an isolation plate to be connected to the small end of a small horn mouth of the small microphone through a small hose, the large end of the small horn mouth is connected with a telephone receiving face of the small microphone, a conducting wire of the small microphone is connected to a telephone receiving wire of a metal shielding isolation wire through the control of a switch, the switch can turn on or turn off a telephone receiving system, so that a user can not hear or hear the speech of the other party, and is connected, therefore, passive audio signals are directly sent to the small microphone to generate active signals, conversion is not needed, the surface of the shell, which is close to the cover, is provided with a plurality of small through holes or the sound wave concentrator is directly arranged in the plurality of small hole surfaces of the shell to clamp the vibrating membrane, the peripheries of all the connecting parts are sealed, the circuit is simple, and the cost is low;
the isolating plate is arranged in the shell to isolate the big loudspeaker from the wheat wind, and the conducting wire penetrates through the isolating plate and is sealed by glue, so that the big loudspeaker is prevented from interfering the wheat wind collector.
If the output signal power of the small microphone is insufficient, an audio amplification circuit is arranged at the output end of the small microphone to amplify the output audio signal of the small microphone, the amplification circuit and the amplification circuit of the large loudspeaker share a power supply or are jointly installed on a circuit board, and a battery is installed in the shell to supply power or a power line is led out from the communication machine to supply power;
the structure has the advantages that the used power supply is far away from the brain and the ears, and the radiation-proof effect can be absolutely achieved.
The noise-reducing and radiation-proof earphone as described above,
the characteristics are as follows:
the sound-deadening structure of the sound emitted from the back of the loudspeaker of the earphone is arranged: the method comprises the following steps that a cover which is thin and is suitable for the power of a loudspeaker is used for covering the back of the loudspeaker in two layers, the two layers of cavities have certain volumes, air in the cavities has elasticity, the thickness of the cover is selected according to the size of the loudspeaker, and the cover is fixedly arranged on the periphery of a sound wave concentrator by screws or is adhered to the periphery of the sound wave concentrator by glue;
or a silencer with a resonant cavity is arranged, a plurality of pipes are communicated in the resonant cavity, small holes penetrating through the resonant cavity are densely distributed on the pipes, the front two pipes are combined into a pipe head and then connected with a sound outlet of a cover at the back of a loudspeaker, namely connected with an outlet of a cover at the periphery of the large end of the sound wave concentrator, a layer of film is further arranged at the outlet to prevent water for the loudspeaker, the back ends of the back two pipes are converged in a pipe connected with sound-absorbing materials and finally become gas to flow out of the silencer, the sound in the pipes is sent out from the small holes to the resonant cavity, resonance is generated in the resonant cavity, namely the sound is mutually counteracted, and the aim of silencing is fulfilled, so that only a person wearing the earphone can hear the sound in the earphone, and the effect of keeping secret can not influence other people.
The noise-reducing and radiation-proof earphone as described above,
the characteristics are as follows:
the noise-reducing head-wearing type single-ear radiation-proof earphone is provided with an elastic bow clamp which is arranged on a shell, a long clamping piece or clamping pieces with other shapes are arranged at the end head of the bow clamp, and soft sponge is embedded in the inner side of each clamping piece;
the shell of the sound collector provided with the vibrating diaphragm is connected with a universal transmission arm, the sound wave concentrator of the sound collector is connected with one end of an air conduit in the universal transmission arm, the other end of the air conduit in the universal transmission arm is connected with an adjustable arm, the other end of the adjustable arm is inserted and connected with one end of a sealing ring, the other end of the sealing ring is connected with one end of a tube A of a cross joint, the other end of the tube A of the cross joint is connected with one end of a small microphone conduit, a spring is arranged outside the sealing ring 295-A, one end of the spring abuts against a plane on the inner side of the shell of the adjustable arm, the other end of the spring is connected with the plane on the inner side of the sealing ring, the other end of the sealing ring is connected with a plane on the outer side of one end of the cross joint, the other end of the wheat microphone conduit is connected with a wheat microphone with the sound wave concentrator, then connected to the plug connector;
an audio signal is connected to a metal shielding isolation wire from a plug connector and then is connected to a loudspeaker, a sound outlet surface of the loudspeaker is connected with a sound wave concentrator, the small end of the sound wave concentrator is connected with an air conduit, the other end of the air conduit is connected with one end of a four-way B pipe, the other end of the B pipe is connected with a sound outlet cavity, a cover plate is arranged in the sound outlet cavity, a plurality of small holes are formed in the part of the sound outlet cavity of the cover plate, a soft cushion is arranged on the periphery of the cover plate, four or more rectangular holes are formed in the cover plate and are buckled on a convex back buckle of a shell for fixing, and the four-way is fixed on the inner side of the cover plate through;
the air duct and the wheat wind duct are combined into a whole to be made into a noodle type flat shape or made into other shapes, one end of the air duct and the wheat wind duct are arranged in the soft sleeve, and the soft sleeve is embedded on the outer periphery of the shell;
one end of the adjustable arm connecting seal ring is provided with a thin-piece-shaped outer gear and a back-off, the back-off is movably arranged in the shell, the outer gear is subjected to jump positioning by a claw in the shell, the gear is positioned, namely the adjustable arm can rotate and position in 355-degree jump, and the adjustable arm also plays a role of a slidable rear cover;
the loudspeaker and the sound wave concentrator are installed in the shell together, the shell is provided with a clip, the clip can be clipped on clothes, or the clip is not arranged, the air conduit is installed on the shell, a soft sleeve is arranged at the installation position of the other end of the air conduit, and a metal shielding isolation wire is also arranged at the other end of the shell;
the shell of the earphone is provided with a clip, the center of the clip is provided with a bow arm, the bow arm can rotate 360 degrees, and the bow arm is matched with the rotation of the adjustable arm to ensure that the earphone can be used by both left and right ears.
The noise-reducing and radiation-proof earphone as described above,
the characteristics are as follows:
or the switching tube of the four-way microphone air conduit and the switching tube of the speaker air conduit are arranged in parallel, because the microphone air conduit is communicated with the adjustable arm B through the tube A of the four-way microphone and the adjustable arm needs 355-degree rotation, the microphone air conduit must be arranged at the central position so as to be convenient to rotate and seal in a sealing sleeve, and the switching tube of the speaker air conduit is arranged at the eccentric position, but the sound outlet cavity is still arranged at the central position, so that the sound transmission of the speaker is not influenced, and the parallel arrangement is formed;
the four-way arrangement can reduce the thickness of the shell of the microphone, so that the appearance is very thin, the shape is beautiful, the weight is reduced, and a user can feel comfortable;
the rest is as the installation mode and the function are as the following settings: the noise-reducing and radiation-preventing safety earphone is a single-track circuit double-ear head-wearing type and is provided with a left ear listening cover, a left ear shell, a sound cavity cover, a right ear listening cover, a right ear shell, a head band, a switch shell, a noise-reducing universal transmission arm, a noise-reducing converter, a shell, a loudspeaker shell and a plug; the earphone air duct comprises a right ear branch air duct connected with the left ear listening cover sound cavity and a right ear branch air duct connected with the right ear listening cover sound cavity, and the right ear branch air duct, the right ear branch air duct and the big pipe of the composite air duct are connected through a tee joint; the vibrating diaphragm air conduit penetrates into the left ear shell from the noise-reducing universal transmission arm and is connected to the hard connector; the other end of the hard connector is inserted into one end of a small pipe of the composite air conduit, the other end of the small pipe of the composite air conduit is connected with a bent hard pipe, the bent hard pipe penetrates through the isolation plate and is connected to the small end of the vibrating diaphragm sound wave concentrator through a small hose, the bent hard pipe is directly combined with the tee joint into a whole to form a five-way joint, one end of a combined bent pipe is the same as the original connection mode, the other end of the bent pipe is connected with one end of a sealing ring, the other end of the sealing ring is connected with an air conduit in the universal transmission arm, the air conduit at the other end of the universal transmission arm is connected with the small end of the sound wave amplifier, the.
The noise-reducing and radiation-proof earphone as described above,
the characteristics are as follows:
the clip on the microphone case is removed and the ear hook is installed, the rest of the structure is the same as the structure, and the shape of the hook is shown in fig. 22;
or the bow arm is cancelled, a hook is arranged on the clamp, and the rest is the same as the following arrangement: the noise-reducing and radiation-preventing safety earphone is a single-track circuit double-ear head-wearing type and is provided with a left ear listening cover, a left ear shell, a sound cavity cover, a right ear listening cover, a right ear shell, a head band, a switch shell, a noise-reducing universal transmission arm, a noise-reducing converter, a shell, a loudspeaker shell and a plug; the earphone air duct comprises a right ear branch air duct connected with the left ear listening cover sound cavity and a right ear branch air duct connected with the right ear listening cover sound cavity, and the right ear branch air duct, the right ear branch air duct and the big pipe of the composite air duct are connected through a tee joint; the vibrating diaphragm air conduit penetrates into the left ear shell from the noise-reducing universal transmission arm and is connected to the hard connector; the other end of the hard connector is inserted into one end of a small pipe of the composite air conduit, the other end of the small pipe of the composite air conduit is connected with a bent hard pipe, the bent hard pipe penetrates through the isolation plate and is connected with the small end of the vibrating diaphragm sound wave concentrator through a small hose, the bent hard pipe is directly combined with the tee joint into a whole to form a five-way joint, one end of a combined elbow pipe is the same as the original connection mode, the other end of the elbow pipe is connected with one end of a sealing ring, the other end of the sealing ring is connected with an air conduit in the universal transmission arm, the air conduit at the other end of the universal transmission arm is connected with the small end of the.
The noise-reducing radiation-proof safety earphone is characterized in that a waterproof and sound-conducting waterproof plastic film is arranged outside the primary microphone, a rubber lining waterproof layer is arranged on the periphery of a button 286-1 of a switch, an outlet of a sound outlet cavity 291 and 1301 is arranged, and an outlet outside a general machine on the back of a loudspeaker is an inlet of a silencer in fig. 24.
According to the radiation protection safety earphone of making an uproar falls, its characterized in that: the lower end of the shell for mounting the loudspeaker is provided with a small cavity, and the microphone is mounted in the small cavity at the lower end of the shell of the loudspeaker. A partition board is arranged between the cavity for mounting the loudspeaker and the small cavity at the lower end of the loudspeaker shell for sealing, and only a guide pipe and a lead are communicated and sealed by glue.
This effectively prevents the speaker 207-2 from interfering with the microphone 204-2.
Drawings
FIG. 1 is a schematic diagram showing the connection and construction of an air duct microphone, without a housing;
FIG. 2 is a view in the direction F;
FIG. 2-1 is an M-directional view;
FIG. 3 is a schematic view of an air duct microphone with a diaphragm mounted in a sound concentrator and in a housing;
FIG. 4 is a cross-sectional view of a steel bow and right ear branch air conduit wrap;
FIG. 5 is a profile view of the steel bow after deployment;
fig. 6 is a cross-sectional view of the noise reducing head-mounted mono binaural safety headphone right ear H1-H1;
FIG. 7 is a J-J cross-sectional view of the noise-reducing headphone right ear sound-emitting cavity;
fig. 8 is a cross-sectional view Q2-Q2, which can be preferred over the headset shown in fig. 12, and can be used with a maximum variety of headsets;
FIG. 9 is a cross-sectional view taken along line Q-Q;
FIG. 10 is a cross-sectional view of Q1-Q1, which can be used with a variety of earphones, the cross-sections of FIGS. 8, 9, and 10 being either 2 separate air ducts or bonded together with separate air ducts;
FIG. 10-1 is a sectional view taken along line F-F;
FIG. 11 is a schematic diagram of a monaural binaural air duct earphone with an air duct for transmitting the active signal converted to a passive signal by an amplifier circuit;
FIG. 12 shows a schematic diagram of a binaural air duct earphone at mono with a diaphragm air duct microphone;
FIG. 13 is an enlarged view of FIG. 12 showing I;
FIG. 14 shows a K-K cross-sectional view of a right ear of a mono binaural air duct earphone;
fig. 15 shows a schematic diagram of a five-way switch in a receiver;
FIG. 16 is a cross-sectional view showing an end portion of the gimbal arm;
FIG. 17 is a sectional view in elevation showing the mounting of gimbal arm 277-1 to the housing, shown in a two-way plane or a one-way plane;
FIG. 18 is a schematic view of the mounting of the gimbal at the transducer end and the acoustic isolation of the speaker and microphone;
FIG. 19 is a cross-sectional view A2-A2;
fig. 20 is a schematic left view of a noise reducing headphone structure for protecting against radiation;
fig. 21 is a schematic front view of a noise reducing head-mounted monaural radiation-proof earphone structure;
fig. 22 is a schematic structural view of a noise-reducing ear-hanging type monaural radiation-proof earphone;
FIG. 23 is a dual-style thin-enclosure speaker muffler;
FIG. 24 is a muffler having a resonant cavity and a sound absorbing means;
FIG. 25 is an enlarged cross-sectional view of C;
FIG. 26 is a schematic view of a gimbal transfer arm 200-B jumping step position;
FIG. 27 is a cross-sectional view C-C of FIG. 28;
FIG. 28 is a schematic view of the four-way junction;
FIG. 29 is a schematic cross-sectional view B-B of FIG. 28;
fig. 30 is a partial schematic view of another microphone mounting manner of the noise-reducing and radiation-proof earphone structure.
Detailed Description
Example 1
The noise-reducing and radiation-proof earphone as described above,
the characteristics are as follows: the embodiment adopts a noise reduction head-wearing anti-radiation earphone, and the structure of the noise reduction head-wearing anti-radiation earphone is provided with a left ear listening cover 195, a left ear shell 195-1, a right ear listening cover 194, a right ear shell 194-1, a head band 185, a switch and switch shell 191, a noise reduction transmission arm 198, a noise reduction converter 196, a shell 195-1, a loudspeaker shell 190 and a plug 193; the noise reduction conversion system is arranged: the noise reduction primary microphone is characterized in that active audio signals are converted into passive audio signals for transmission, a primary microphone lead is arranged to be connected with a secondary audio amplifier circuit to drive a loudspeaker, the amplification power, the number of stages and the performance of the circuit are selected according to the length and the diameter of a selected diaphragm air conduit, sounding ports of the loudspeakers 207 and 208 are connected with large ends of sound wave concentrators 205 and 206, small ends of the sound wave concentrators 205 and 206 are connected with one end of a diaphragm air conduit 189-1 through rivets, the other end of the diaphragm air conduit 189-1 is connected with a small end of a horn mouth sound cavity 203, and a large end of the horn mouth sound cavity 203 is connected with a receiving surface of a secondary microphone 204; the connection from the sound-producing port of the loudspeaker to the receiver surface of the secondary microphone through the air conduit is sealed; the lead of the other end of the secondary microphone is connected with one end of a metal shielding isolation wire 193, the other end of the metal shielding isolation wire 192 is connected with one end of a plug 193, and the other end of the plug 193 is connected with a socket of a communication machine;
the active part of the conversion system is provided with an electronic circuit board, a battery supply circuit, a power supply of a device, a charging circuit, a charging socket, a power indication luminotron and a power switch, wherein the charging circuit and the charging socket are connected with the battery, the device of the active audio signal of the conversion system is completely arranged in the shell of the converter, and a loudspeaker of the conversion system is arranged in the middle of the microphone which is at a certain distance from the primary microphone.
The microphone adopts the mode that the active transmission is converted into the passive transmission and then the active transmission is recovered, so that the air duct can be arranged to be very long, the microphone is very close to the sounding port, the noise reduction effect is achieved, and meanwhile, the extremely high harm of the communication machine to ears and brain is prevented.
One end of the left ear air guide tube 187-1 is connected with the inlet of the sounding sound cavity 209-1, the other end is connected with the small end of the sound wave concentrator 205, the large end of the sound wave concentrator 205 is connected with the loudspeaker 207, and the other end of the loudspeaker 207 is connected with the metal shielding lead 193 by a lead wire; one end of a right ear air conduit 188-1 is connected with the inlet of a right ear sounding cavity, the other end of the right ear air conduit is parallel to a loudspeaker shell 190 through a left ear shell 195-1 and the left ear air conduit 187-1 along the outer side or the inner side of a metal arch 186 and is connected with the small end of a right ear sound wave concentrator 206, the other end of the right ear sound wave concentrator 206 is connected with a right ear loudspeaker 208, the other end of a lead of the right ear loudspeaker 208 is connected with a metal shielding lead 193 and is connected with one end of another section of metal shielding lead 192 through a switch 191, and the other end of the metal shielding lead 192 is connected with.
The three air ducts are bonded in parallel and are wrapped by flexible material.
Example 2
Air duct microphone adopting remote noise reduction
A diaphragm 262 is provided to be mounted on the large end of the acoustic wave concentrator 263, a cover 261 is attached to the outside of the diaphragm 262, and a plurality of through holes are provided in the cover 261 and the diaphragm 262 is fastened to the large end of the acoustic wave concentrator 263. The small end of the sound wave concentrator 263 is connected with one end of an air conduit 264, the other end of the air conduit is connected with the small end of a bell-mouth 265, the large end of the bell-mouth 265 is connected with a small microphone, all the joints from the receiving surface of the small microphone 266 to the periphery of the cover 261 are sealed, and the angles of the sound wave concentrator 263 and the bell-mouth 265 are both 120 degrees;
the lead 267 of the small microphone is connected with the amplifying port 68, the output end of the amplifying port is connected with the metal shielding isolation wire and then is connected with the communication machine through the connector;
the length of the air conduit 264 is set to be 300mm, the hole is 3mm, all the noise-reducing and radiation-proof microphones can be installed in the bell mouth 265 by the device, and the device replaces a wheat microphone 266 of which the microphone is arranged at a position beyond the length of the air conduit for listening to the voice in the prior art.
Example 3
In this embodiment, no amplifier is used, i.e. the conductor 267 is directly connected to the shielded metal isolation line to the communicator, and if the impedance of the small microphone is not matched, the small microphone is connected to the shielded metal isolation line at the output end of the small microphone through the impedance transformer 269-1 and then connected to the communicator; the rest of the setup was the same as in example 2.
Example 4
In the present embodiment, a sound transmission tube is used, which is composed of a cover 261, a diaphragm 262, a sound wave concentrator 265, and an air duct, and the sound transmission tube can connect a microphone far from the mouth to the mouth side by using bellmouths with different sizes, so as to achieve the purpose of noise reduction and the effect of radiation protection, and the rest of the arrangement structure is the same as that of embodiment 2.
Example 5
The embodiment adopts a single sound track circuit, a double-ear head-wearing type all-air conduit noise-reduction and radiation-protection earphone
The signal of the slave plug 290 is connected with the answering signal line of the audio signal line of the metal shielding isolation line 289 of the signal from the communicator, the other end of the big loudspeaker 284 is connected with the big end of the sound wave concentrator 284-1, the small end of the sound wave concentrator 284-1 is connected with the big pipe 288 of the composite air conduit 283, the other end of the big pipe 288 is connected with the long end of the tee joint 290 and is fastened by the binding tape 300, the other end of the tee joint 290 is connected with the sealing ring 295, the other end of the sealing ring 295 is connected with the right ear branch air conduit 294, the other end of the right ear branch air conduit 294 is connected with the sealing ring 292, the other end of the sealing ring 292 is connected with the elbow 291, the other end of the elbow 291 is connected with the sound cavity 291-1, the bottom surface of the elbow is provided with the mounting plate 274-1, the mounting plate is fixed in the right ear shell 274;
a small through pipe 302 is arranged on the tee joint 290, a small sound wave concentration port 302-1 is arranged at one end of the small through pipe 302 and is connected with the tee joint 290, the other end of the small through pipe 302 is connected with a small sound cavity 301, a sound cavity cover plate 301-1 is arranged on the small sound cavity 301, and a plurality of penetrating small holes are formed in the sound cavity cover plate 301-1;
the structure is provided with a movable groove 270 to enable the bow 273 and the right ear branch air guide pipe 272 to move at a set swinging angle, a sealing ring 295 is arranged at the shaft center of the swinging, and the movement of the bow 273 and the right ear branch air guide pipe 272 is flexible by using flexible materials such as rubber, and the transmission of sound waves is not blocked;
the inner diameter of the small through pipe 302 is much smaller than that of the tee joint 290, and the specific size is determined by calculating the attenuation value of a branch pipe leading to the right ear, so that the sound volume of ears at two sides is consistent;
the bottom of the tee joint 290 is provided with an installation plate 297, the installation plate 297 is provided with small holes, the tee joint is installed on the bottom surface of the left ear shell 276 through screws 290-2 and is accurately installed on the bottom surface of the left ear shell 276 by setting a positioning pin. The joint between the cover plate of the right ear sound cavity and the cover plate of the left ear sound cavity from the sound outlet of the large loudspeaker 284 is sealed completely. The sound waves are prevented from leaking, and the sound emitted by the large loudspeaker 284 is sent to the left ear and the right ear.
If the volume is too small or an audio amplifier circuit is arranged at the front end of the big loudspeaker, the amplifier circuit is arranged in the big loudspeaker shell 286-A, and the amplification power of the amplifier circuit is selected according to the requirement;
a complete noise-reducing receiving conversion system is arranged: the noise-reducing primary microphone pushes the loudspeaker 278 through the amplifying port 282-A, the sound outlet of the loudspeaker 278 is connected with the large end of the sound wave concentrator 278-B, the small end of the sound wave concentrator 278-B is connected with the small air conduit 277-A, the small air conduit 277-A penetrates into the left ear shell 276 from the noise-reducing universal transmission arm 277, the hard connector 275 is connected, the other end of the hard connector 275 is inserted into one end of the small pipe 289 of the composite air conduit 283, the other end of the small pipe 289 of the composite air conduit 283 is connected with the bent hard pipe 275-A, the bent hard pipe 275-A penetrates through the isolating plate 285 and is connected to the small end of the secondary receiver sound wave concentrator 275 through a small hose, the large end of the sound wave concentrator 275 is connected with the receiving face of the secondary receiver 275-B, the lead wire of the secondary receiver 275-B is connected to the receiver wire 287 of the metal shielding isolating wire, the switch can cut off the telephone receiving system to make the other party not hear or hear the user's speech, and then connect the communicator through the connector 290, the battery of the converter is installed in the converter outer casing 278-A, the converter outer casing 278-A is equipped with the pilot lamp 281 to indicate the power cut-off, the light-transmitting body of the pilot lamp 281 is moulded on the outer casing 278-A of the converter, there is the cut-off of the switch 279-A control power, the switch 279-A is sealed with rubber gasket, there is waterproof charging jack 282 to charge the battery, insert type separation plate 278-C to insert slot plate 278-D between speaker 278, amplifying circuit and primary microphone 280, place the flexible material in slot plate 278-D to seal, the connection wire of speaker 278 is sealed with glue from separation plate-C, the converter outer casing 278-A is fixed on universal arm 277 with the screw 277-A, one pipe of the arranged composite air conduit is provided with a large pipe and a small pipe, the appearance looks like only one pipe, and two channels are actually arranged, so that the composite air conduit is attractive and light;
a baffle is provided within housing 286-A to isolate large speaker 284 from secondary receiver 275-B to prevent large speaker 284 from interfering with secondary receiver 275-B.
Example 6
In this example, the five-way pipe was substituted into the original three-way pipe and hard pipe structure to use the entire structure (see fig. 15), and the rest of the structure was the same as that of example 5.
Example 7
The structure of the mono circuit binaural headphone noise reduction and radiation protection earphone noise reduction microphone with all air ducts as described in embodiment 6 is a device for converting an active audio signal into a passive signal and restoring the passive signal to the active audio signal.
The conduction mode of the noise-reducing microphone of the present embodiment is different from that of the embodiment 6, and the rest of the structure is the same as that of the noise-reducing radiation-proof earphone of the embodiment 6.
In this example, an air duct microphone is applied, the end of a universal transmission arm 277-1 is mounted with a housing 278-C, a sound transmission tube 262-1 is mounted in the housing 278-C, the sound transmission tube 262-1 comprises a cover 261, a vibrating membrane 262, a sound wave concentrator 263 and a small air duct 264, the small air duct 264 passes through the noise reduction universal transmission arm 277-1 into the left ear housing 276-1 and is connected to a hard connector 275-1, the other end of the hard connector 275-1 is inserted into one end of a small pipe 289-1 of a composite air duct 283-1, the other end of the small pipe 289-1 of the composite air duct 283-1 is connected with a bent hard pipe 275-C which passes through a separation plate 285-1 and is connected to the small end of a small horn mouth 271-1 of a small microphone 275-D through a small hose, the big end of the small horn 271-1 is connected with the receiving surface of the small microphone 275-D, the conducting wire of the small microphone 271-1 is connected to the receiving wire of the metal shielding isolation wire 287-1 through the control of the switch 286-1, the switch can turn on or off the receiving system, so that the other party can not hear or hear the user's speech, and then the receiving system is connected with the communicator through the connector 290-1, thus, the passive audio signal directly reaches the small microphone to generate active signal without conversion, the surface of the shell 278-C against which the cover 261 leans is provided with a plurality of small through holes, the periphery of each connection is sealed circuit, and the cost is lower;
a separation plate 285-1 is arranged in the shell 278-C to separate the big loudspeaker 284-1 from the small wind-guiding device 275-D, and the lead wires pass through the separation plate 285-1 and are sealed by glue, so that the big loudspeaker 284-1 is prevented from interfering with the small wind-guiding device 275-D.
If the output signal power of the small microphone is insufficient, an audio amplification circuit is arranged at the output end of the small microphone to amplify the output audio signal of the small microphone, and the amplification circuit of the large loudspeaker share a power supply.
Example 8
Mounting the covers 304, 304-1 as shown in fig. 25 to the acoustic concentrator 284-1 covers the back of the speaker 284, reducing the sound from the back of the speaker from affecting others.
Example 9
The present example provides another sound-deadening structure for sound emitted from the back of the speaker of the headphone: the sound-absorbing device is characterized in that a silencer with a resonant cavity 306 is arranged, a plurality of pipes are communicated in the resonant cavity 306, small holes 307 which penetrate through the resonant cavity and are densely distributed are formed in the pipes, the front two pipes are combined into a pipe head and then connected with a sound outlet of a cover at the back of a loudspeaker, namely connected with an outlet of a cover at the periphery of the large end of a sound wave concentrator, a layer of film is further arranged at the outlet to prevent water from the loudspeaker, the rear ends of the rear two pipes are collected in a pipe which is connected with sound-absorbing materials, and finally, the gas flows out of the silencer, sound in the pipes is sent out from the small holes 307 to the resonant cavity 306, resonance is generated in the resonant cavity 306, namely, the sound is counteracted mutually, and the aim of silencing is achieved, so that only a person wearing the earphone can listen to the sound in the earphone.
Example 10
The noise-reducing head-wearing type single-ear radiation-proof earphone is provided with an elastic bow clamp 199-1 which is arranged on a shell 200-C, a long clamping piece 202-1 is arranged at the end of the bow clamp, and soft sponge is embedded in the inner side of the clamping piece;
the shell of the sound collector 196-2 provided with a vibrating diaphragm is connected with a universal transmission arm 198-2, the sound wave concentrator of the sound collector 196-2 is connected with one end of an air conduit in the universal transmission arm 198-2, the other end of the air conduit in the universal transmission arm 198-2 is connected with an adjustable arm 200-B, the other end of the adjustable arm 200-B is inserted and connected with one end of a sealing ring 295-A, the other end of the sealing ring 295-A is connected with one end of a pipe A of a cross joint 290-A, the other end of the pipe A of the cross joint 290-A is connected with one end of a microphone conduit 203-1, a spring 295-B is arranged outside the sealing ring 295-A, one end of the spring 295-B is tightly abutted against the inner side plane of the shell of the adjustable arm 200-C, and the other end is connected with the inner side plane of, the other end of the sealing ring 295-A is connected with one outer side plane of the cross joint 209-A and leans against the outer side plane, the other end corresponding to the cross joint 209-A is connected with one end of the microphone guide pipe 203-1, the other end of the microphone guide pipe 203-1 is connected with the microphone 204-2 with the sound wave concentrator, and the microphone 204-2 is connected with the metal shielding isolation line and then connected with the plug-in connector 206-1;
the audio signal is connected from the connector 206-1 to the metal shielding isolation wire 205-1 and then connected to the loudspeaker 207-2, the sound outlet surface of the loudspeaker 207-2 is connected with the sound wave concentrator 205-2, the small end of the acoustic concentrator 205-2 is connected to an air conduit 202-1, the other end of the air conduit 202-1 is connected to one end of tube B of the cross 290-B, the other end of the tube B is connected with a sound outlet cavity 301-2, the sound outlet cavity 301-2 is provided with a cover plate 301-C, a plurality of small holes are arranged at the position of the sound outlet cavity 301-B of the cover plate 301-C, the periphery of the cover plate 301-C is provided with a soft pad 202-C, the cover plate 301-C is provided with four rectangular holes which are buckled on a convex reverse buckle of the shell 200-C for fixation, and the four-way 209-A is fixed on the inner side of the cover plate 301-C by screws;
the air conduit 202-1 and the microphone conduit 203-1 are combined into a whole to be made into a flat noodle type, one end of the air conduit is arranged in the soft sleeve 276-C, and the soft sleeve 276-C is embedded on the outer periphery of the shell 200-C;
one end of the adjustable arm 200-B connected with the sealing ring 295-A is provided with a thin-sheet-shaped outer gear 200-3 and an inverted buckle, the outer gear 200-3 is movably arranged in the shell 200-C by the inverted buckle, the outer gear 200-3 is subjected to step skipping positioning by a claw 200-4 in the shell, the gear 200-3 is positioned, namely the adjustable arm 200-B can perform 355-degree step skipping rotation and positioning, and the adjustable arm 200-B also plays a role of a slidable rear cover;
the loudspeaker 207-2 and the sound wave concentrator 205-2 are installed in the outer casing 204-A together, the outer casing 204-A has a clamp 200-D, can clamp on clothes with said clamp 200-D, the outer casing 204-A installs the air conduit 203-1 and the installation department of the other end of the air conduit 202-1 has soft covers 276-D, the other end of said outer casing 204-A installs the metal shielding insulated wire and also has soft covers 276-E;
a clip 200-D is mounted on the earphone shell 204-A, a bow 199-2 is mounted at the center of the clip 200-D, the bow 199-2 can rotate 360 degrees, and the bow 199-2 is matched with the rotation of the adjustable arm 200-B to enable the earphone to be used by both left and right ears.
Example 11
In this example, the four-way structure of fig. 27, 28, 29 is provided in place of the four-way 209A of fig. 25, and the sizes of the housing 200-C, the cover plate 301-C, the adjustable arm rear cover, and other parts are set to match the size of the four-way after substitution.
Example 12
The clip 200-D of the microphone case 204-a is removed and the ear hook 211-1 is attached, and the rest of the structure is the same as that described in embodiment 11, and the hook is shaped as shown in fig. 22.
Example 13
In this embodiment, the bow arm 199-2 is removed and the hook 211-1 is attached to the clip 200-E, and the same as in embodiment 11 is applied.
The utility model discloses still include, set up the initiative to the air conduit speaker and fall the function of making an uproar, the sound-receiving face has outwards set up the noise in a miniature microphone collection environment in the environment of hearing, the noise that will gather simultaneously meets and send the circuit of making an uproar, the circuit of making an uproar adopts LM1894 or LM832 chip or the corresponding circuit of making an uproar of design in addition carries out the operation processing back, send through the air conduit speaker with noise opposite phase, the noise is offset to the sound wave that the amplitude is the same, the ear will feel the noise and weaken or disappear at last. Or the air duct microphone is used for collecting noise on the ear side and sending the noise to the noise reduction circuit, the noise reduction circuit adopts an LM1894 or LM832 chip or a corresponding noise reduction circuit designed additionally for operation processing, sound waves with opposite phases and same amplitude with the noise are emitted through the air duct loudspeaker to offset the noise, the effect is better, and the wheat microphone in the air duct microphone is arranged in a small cavity picture 30 and 204-2 below the loudspeaker shell. In addition to the above technical requirements for active noise reduction of the electronic microphone, the three components can achieve ideal effects in combination.
As shown in fig. 30, the small microphone 204-2 of the present embodiment is mounted in a manner different from that of fig. 21: the lower end of the shell for installing the loudspeaker is provided with a small cavity, and the wheat microphone 204-2 is installed in the small cavity at the lower end of the shell for installing the loudspeaker.
It should be noted that: the above embodiments are only used for further detailed description of the present invention, and are not intended to limit the claims of the present invention, and those skilled in the art can make various modifications or changes to the present invention without departing from the spirit and concept of the present invention, and still fall within the protection scope of the present invention.

Claims (12)

1. A noise-reducing and radiation-proof earphone is characterized by comprising:
the earphone head is internally provided with a sound cavity, and a first end of the sound cavity is provided with a sound outlet;
the earphone sound wave concentrator is arranged inside the main body, a channel port is formed in the earphone sound wave concentrator, and the channel port is communicated with the second end of the sound cavity through an earphone air conduit;
a speaker, the earpiece sound wave concentrator disposed between the speaker and the earpiece air conduit;
the loudspeaker is connected with a first end of a lead positioned outside the main body, and a second end of the lead is connected with a plug; a silencer is arranged on the back of the loudspeaker;
and a noise reduction air duct microphone, a noise reduction air duct microphone having an impedance matching function,
the large end of the amplifying port is provided with a microphone to convert the sound wave signal of the air conduit into an audio electric signal;
the front end of the metal shielding isolation wire is provided with an impedance transformer for matching impedance matching between the small microphone and the voice terminal or the communicator;
the noise-reducing air duct microphone is applied to a noise-reducing head-wearing anti-radiation earphone, and the characteristics of the noise-reducing air duct microphone comprise that a tee joint or a five-way joint is used for connecting an air duct.
2. A noise reducing and radiation protecting earphone as claimed in claim 1, wherein: the output end of the microphone is connected with a signal amplifier which is arranged at the front end of the metal shielding isolation wire.
3. A noise reducing and radiation protecting earphone as claimed in claim 1, wherein: the vibrating diaphragm is installed at the large end of the sound wave concentrator, a cover is arranged outside the vibrating diaphragm, a plurality of through holes are formed in the cover and tightly fasten the vibrating diaphragm at the large end of the vibrating diaphragm sound wave concentrator, the small end of the vibrating diaphragm sound wave concentrator is connected with one end of a vibrating diaphragm air duct, the other end of the vibrating diaphragm air duct is connected with the small end of another horn mouth, the large end of the horn mouth is connected with the small microphone, all joints from the telephone receiving surface of the microphone to the periphery of the cover are sealed, the surface of the small microphone exposed outside the sound wave concentrator is sealed in a sleeved mode, and the angles of the sound wave concentrator and the horn mouth are 90-160 degrees.
4. A noise reducing and radiation proof earphone as claimed in claim 1, wherein the impedance transformer is preceded by an amplifier.
5. The noise-reducing and radiation-proof earphone according to claim 3, wherein: the vibrating diaphragm install on the vibrating diaphragm sound wave concentrator of taking the return bend, in the vibrating diaphragm sound wave concentrator was buckled the upper cover with the back-off, the back lid was also buckled the upper cover with the back-off, the pipe chamber of the vibrating diaphragm sound wave concentrator of taking the return bend is the vibrating diaphragm air conduit in inserting universal transmission arm, the wheat breeze that will choose for use is received through the switching to the vibrating diaphragm air conduit.
6. A noise reducing and radiation protecting earphone as claimed in claim 1, wherein: the noise-reducing and radiation-proof earphone is a single-track circuit double-ear head-wearing type and is provided with a left ear listening cover, a left ear shell, a sound cavity cover, a right ear listening cover, a right ear shell, a head band, a switch shell, a noise-reducing universal transmission arm, a noise-reducing converter, a shell, a loudspeaker shell and a plug;
the earphone air duct comprises a right ear branch air duct connected with the left ear listening cover sound cavity and a right ear branch air duct connected with the right ear listening cover sound cavity, and the right ear branch air duct, the right ear branch air duct and the big pipe of the composite air duct are connected through a tee joint;
the vibrating diaphragm air conduit penetrates into the left ear shell from the noise-reducing universal transmission arm and is connected to the hard connector; the other end of the hard connector is inserted into one end of a small pipe of the composite air conduit, the other end of the small pipe of the composite air conduit is connected with a bent hard pipe, the bent hard pipe penetrates through the isolation plate and is connected to the small end of the vibrating diaphragm acoustic wave concentrator through a small hose,
the bending hard pipe is directly combined with the tee joint into a whole to form the five-way joint, one end of the combined bent pipe is the same as the original connection mode, the other end of the bent pipe is connected with one end of the sealing ring, the other end of the sealing ring is connected with the air conduit in the universal transmission arm, the air conduit at the other end of the universal transmission arm is connected with the small end of the sound wave amplifier, and the large end of the sound wave concentrator is provided with the vibrating diaphragm for connection.
7. A noise-reducing and radiation-proof earphone as claimed in claim 6, wherein: an air isolation cavity for sound isolation between the large pipe and the small pipe is arranged between the large pipe and the small pipe of the composite air conduit, or the large pipe and the small pipe are connected through a sheet-shaped connecting plate.
8. The noise-reducing radiation-proof earphone according to claim 7, wherein the noise-reducing sound-proof structure of the sound emitted from the back of the speaker of the earphone is covered on the back of the speaker by a cover with a smaller thickness and adapted to the power of the speaker, the two layers of cavities have volumes, the thickness of the cover is selected according to the size of the speaker, and the cover is fixedly installed on the periphery of the sound wave concentrator by screws or is adhered to the periphery of the sound wave concentrator by glue;
or a silencer with a resonant cavity is arranged, a plurality of pipes are communicated in the resonant cavity, small holes penetrating through the resonant cavity are densely distributed on the pipes, the front two pipes are combined into a pipe head and then connected with a sound outlet of a cover at the back of a loudspeaker, namely connected with an outlet of a cover at the periphery of the large end of the sound wave concentrator, a layer of film is arranged at the outlet for preventing water for the loudspeaker, the back ends of the back two pipes are collected in a pipe connected with sound absorbing materials to finally become gas flowing out of the silencer, the sound in the pipes is sent out from the small holes to the resonant cavity, and resonance is generated in the resonant cavity, namely, the sound is mutually counteracted, so that the aim of silencing is fulfilled.
9. The noise-reducing radiation-proof earphone according to claim 1, wherein a waterproof and sound-conducting waterproof plastic film is arranged outside the noise-reducing air duct microphone, a rubber liner is arranged around a button of the switch to prevent water, an outlet of the sound outlet cavity is arranged, and an outlet outside the general machine on the back of the speaker is an inlet of a silencer.
10. The noise-reducing and radiation-proof earphone according to claim 1, wherein: the active noise reduction function is set for the air conduit loudspeaker, a micro microphone is set on the loudspeaker shell in the auditory environment, the sound receiving surface of the loudspeaker shell faces outwards to collect the noise in the environment, the collected noise is sent to the noise reduction circuit, the noise reduction circuit adopts an LM1894 or LM832 chip or other corresponding noise reduction circuits to carry out operation processing, sound waves with the phase opposite to that of the noise and the same amplitude are sent out through the air conduit loudspeaker to cancel the noise, or the air conduit microphone is used for collecting the noise on the ear side and sent to the noise reduction circuit, the noise reduction circuit adopts the LM1894 or LM832 chip or other corresponding noise reduction circuits to carry out operation processing, the sound waves with the phase opposite to that of the noise and the same amplitude are sent out through the air conduit loudspeaker to cancel the noise, and the wheat microphone in the air conduit microphone is set in a small cavity below the loudspeaker shell.
11. The noise-reducing and radiation-proof earphone according to claim 1, wherein:
the earphone is a noise-reduction head-wearing type single-ear radiation-proof earphone, a shell of a sound collector provided with a vibrating membrane is connected with a universal transmission arm, a sound wave concentrator of the sound collector is connected with one end of an air duct in the universal transmission arm, the other end of the air duct in the universal transmission arm is connected with an adjustable arm, the other end of the adjustable arm is connected with one end of a sealing ring, the other end of the sealing ring is connected with one end of a four-way A pipe, the other end of the four-way A pipe is connected with one end of a small microphone duct, a spring is arranged outside the sealing ring, one end of the spring is tightly leaned on a plane on the inner side of the shell of the adjustable arm with the angle of 306 degrees, the other end of the spring is connected with the plane on the inner side of the sealing ring, the other end of the sealing ring is connected with a plane on the outer side of one end of the four, the wheat wind is connected to the metal shielding isolation wire and then connected to the plug-in connector;
an audio signal is connected to a metal shielding isolation wire from a plug connector and then is connected to a loudspeaker, a sound outlet surface of the loudspeaker is connected with a sound wave concentrator, the small end of the sound wave concentrator is connected with an air conduit, the other end of the air conduit is connected with one end of a four-way tube B, the other end of the tube B is connected with a sound outlet cavity, a cover plate is arranged in the sound outlet cavity, a plurality of small holes are formed in the part of the sound outlet cavity of the cover plate, a soft cushion is arranged on the periphery of the cover plate, four or more rectangular holes are formed in the cover plate and are buckled on a convex back buckle of a shell for fixing, and the four-way tube is fixed on the inner side of the cover;
the air duct and the wheat wind duct are combined into a whole to be made into a flat noodle type, one end of the air duct is arranged in the soft sleeve, and the soft sleeve is embedded on the outer periphery of the shell;
one end of the adjustable arm connecting seal ring is provided with a thin-piece-shaped outer gear and a back-off, the back-off is movably arranged in the shell, the outer gear is subjected to jump positioning by a claw in the shell, the gear is positioned, namely the adjustable arm can rotate and position in 355-degree jump, and the adjustable arm also plays a role of a slidable rear cover;
the loudspeaker and the acoustic concentrator are mounted together within the housing.
12. The noise reducing and radiation protecting earphone of claim 11, wherein: the lower end of the shell for mounting the loudspeaker is provided with a small cavity, the microphone is mounted in the small cavity at the lower end of the shell for mounting the loudspeaker, a partition plate is arranged between the cavity for mounting the loudspeaker and the small cavity at the lower end of the shell for mounting the loudspeaker for sealing, and the partition plate is only communicated with a guide pipe and a lead and is sealed by glue.
CN201920424627.8U 2018-03-29 2019-03-29 Noise-reducing and radiation-proof earphone Expired - Fee Related CN209882011U (en)

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CN110139179A (en) * 2018-03-29 2019-08-16 诸爱道 Noise reduction anti-radiating earphone
CN111770405A (en) * 2020-06-15 2020-10-13 江西联创宏声电子股份有限公司 Earphone set

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CN111654568B (en) * 2020-06-17 2021-09-10 瑞声科技(新加坡)有限公司 Loudspeaker system and driving method based on same

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CN110139179A (en) * 2018-03-29 2019-08-16 诸爱道 Noise reduction anti-radiating earphone
CN111770405A (en) * 2020-06-15 2020-10-13 江西联创宏声电子股份有限公司 Earphone set

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