WO2019184537A1 - 降噪防辐射耳机 - Google Patents

降噪防辐射耳机 Download PDF

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Publication number
WO2019184537A1
WO2019184537A1 PCT/CN2019/000062 CN2019000062W WO2019184537A1 WO 2019184537 A1 WO2019184537 A1 WO 2019184537A1 CN 2019000062 W CN2019000062 W CN 2019000062W WO 2019184537 A1 WO2019184537 A1 WO 2019184537A1
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WIPO (PCT)
Prior art keywords
sound
air duct
small
microphone
speaker
Prior art date
Application number
PCT/CN2019/000062
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English (en)
French (fr)
Inventor
诸爱道
Original Assignee
诸爱道
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Application filed by 诸爱道 filed Critical 诸爱道
Publication of WO2019184537A1 publication Critical patent/WO2019184537A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00Details of transducers, loudspeakers or microphones
    • H04R1/10Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00Details of transducers, loudspeakers or microphones
    • H04R1/10Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1083Reduction of ambient noise
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00Details of transducers, loudspeakers or microphones
    • H04R1/20Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00Details of transducers, loudspeakers or microphones
    • H04R1/20Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2807Enclosures comprising vibrating or resonating arrangements
    • H04R1/2811Enclosures comprising vibrating or resonating arrangements for loudspeaker transducers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00Details of transducers, loudspeakers or microphones
    • H04R1/20Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2869Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself
    • H04R1/2873Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself for loudspeaker transducers

Definitions

  • the invention relates to an anti-radiation or noise-reducing radiation-proof earphone, and more particularly to an anti-radiation earphone and a stereo anti-radiation earphone for a communication device with high radiation such as a high-frequency magnetic field such as a mobile phone.
  • a communication device with high radiation such as a high-frequency magnetic field such as a mobile phone.
  • it relates to an earphone that has a truly improved frequency response and produces a better stereo effect, which is better than the frequency response of a conventional wire-controlled headset.
  • earphones such as earphones on mobile phones or other communication devices
  • earphones on mobile phones or other communication devices include plugs, wires, and earplugs, and the earbuds are equipped with microspeakers. Since the mobile phone directly uses the mobile phone to make a phone call, the harmful radiation such as ultra-high frequency magnetic field generated by the mobile phone will seriously irritate the human brain and affect the health of the human body. People often use the earphone machine to pick up the mobile phone to reduce the UHF word field and Radio waves, heat and other radiation damage to the human brain.
  • the prior art earphone for preventing electromagnetic radiation such as patent number: ZL02244828.4, is named: non-radiation earphone, although it can reduce electromagnetic radiation, but because it has only 5-10cm acoustic channel, the second is not provided with metal. Shielding isolation lines can not meet the requirements of 2mG (milli Gauss, the same below) or 2mG or less, and the control is below 2mG or 2mG, because electromagnetic fields and electromagnetic waves are harmful to the human body.
  • the inventor of the mobile phone is a doctor of the University of Stanford, USA, and a doctor of the American Academy of Engineering. Professor Shi Min from Taiwan Jiaotong University. Therefore, the prior art earphones cannot meet the above requirements of electromagnetic wave radiation.
  • the frequency response is not good;
  • the patent number applied by the inventor is: 200810167226.5, the name is: the application file of the noise reduction radiation protection earphone, and the five inventions of the noise reduction radiation protection earphone are also disclosed, and the method for realizing the radiation prevention is disclosed.
  • the method of improving the sound quality has obtained the patents of nine countries in the world, but the sound quality of the patent does not exceed the traditional earphones.
  • the security headset applied by the Japanese applicant the application number is 201710417231.6, the sound quality is beyond the tradition.
  • the earphones can also improve the anti-radiation effect to achieve a non-radiative effect.
  • the invention relates to a safety earphone, which mainly comprises a wire-controlled safety earphone and a head-mounted safety earphone.
  • a plurality of speakers with different frequency responses are respectively provided for two ears to listen, so the frequency response is particularly good, and the speaker is more than the traditional earphone. It is better, and a special scheme for noise reduction is set. More importantly, a noise reduction frequency signal conversion system is set, which effectively converts the transmission of the active noise reduction frequency signal into the transmission of the passive audio signal and restores the active audio signal.
  • the transmission allows the passive signal transmission of the air duct to be placed at a length of 1000 mm or 1000 mm.
  • the metal shielded isolation line is provided, the human body is isolated from the communication machine for a long distance, but the microphone is still close to the sound port.
  • the distance which achieves good noise reduction and high radiation protection and high sound quality, solves the technical problem that the existing radiation-proof earphone microphone must be placed outside the air duct, because the microphone is far away from the microphone. Poor, the sound is still small.
  • this invention is indeed an excellent safety earphone that is both high-intensity radiation-proof, high-quality, and noise-proof.
  • a noise reduction radiation-proof earphone the structure of which is provided with a left ear hearing cover, a sound chamber cover, a left ear shell, a right ear hearing cover, a right ear shell, a headband, a switch and a switch shell , noise reduction transmission arm, noise reduction converter, left outer casing, speaker housing, plug; provided with noise reduction conversion system
  • Noise reduction once microphone 280 active audio signal is converted into passive audio signal transmission, and then restored to active audio signal transmission, set a microphone lead to connect the secondary audio amplifier circuit to push the speaker, circuit amplification power and level
  • the number and performance are selected according to the length and diameter of the selected diaphragm air duct.
  • the sound port of the speaker is connected to the big end of the sonic concentrator, and the small end of the sonic concentrator is connected to one end of the diaphragm air duct by rivets.
  • the other end of the diaphragm air duct is connected with the small end of the bell mouth cavity, and the big end of the bell mouth cavity is connected with the receiving face of the secondary microphone; the sound port of the speaker passes through the air duct to the secondary microphone.
  • connection of the surface is sealed; the other end of the secondary microphone is connected to one end of the metal shielding isolation line, the other end of the metal shielding isolation line is connected to one end of the plug, and the other end of the plug is connected to the socket of the communication machine;
  • the active part of the conversion system is provided with an electronic circuit board and is provided with a power supply circuit for the battery supply circuit and the device, a charging circuit and a charging socket connected to the battery, a power indicating light emitting tube and a power switch, and the above-mentioned conversion system is active.
  • the components of the audio signal are all installed in the converter casing.
  • the speaker of the conversion system is installed in the middle of the microphone or the outer chamber of the left ear casing at a certain distance from the primary microphone.
  • the circuit can change the amplification power of the circuit according to the length of the diaphragm air conduit. Chips and different circuits.
  • the microphone uses active conversion to passive transmission and then restores to active transmission.
  • the air duct can be set long and the microphone is close to the sounding port to achieve noise reduction effect, achieving extremely high communication prevention. Machine damage to the ears and brain.
  • the left ear air duct is connected to the sound chamber at one end and the other end of the sound concentrator is connected to the small end of the sound concentrator.
  • the sound concentrator is connected to the speaker at the big end, the other end of the speaker is connected to the metal shield wire, and the right ear air duct is connected to the right ear sound chamber.
  • the other end of the entrance is along the outer or inner side of the metal bow through the left ear casing and the left ear air duct parallel to the speaker casing to connect the right ear sonic concentrator small end, the right ear sonic concentrator is connected to the right ear speaker, and the right ear speaker is One end of the lead wire is connected to the metal shielded wire, and is connected to one end of another metal shielded wire through a switch, and the other end of the metal shielded wire is connected to the plug.
  • the left and right ear two speakers and the left and right ear sound wave concentrator and the secondary microphone are arranged in the switch housing, the connection mode is unchanged, the outlet of the sounding cavity is provided with a single hole or a plurality of small holes, and the convection hole of the above speaker is set to be installed.
  • the outer row of the outer casing, the microphone and the speaker are to be isolated;
  • the three air ducts are flatly bonded, or the triangles are combined into one, or the triangles are combined and wrapped with a flexible material outside, or the three air ducts are controlled as one, without any material surrounding;
  • the air duct of the right ear is obliquely pulled from the speaker casing to the inlet connection of the sound chamber of the right ear, that is, not guided by the metal bow;
  • the three air ducts are taken out from the front of the switch of the speaker casing that transmits the audio signal from the communication device, or all the air ducts are taken out from the E side, that is, are drawn out on the E side shown in FIG. 29, and are connected to the left ear casing. ;
  • the vibrating membrane is installed at the big end of the sonic concentrator, and the outer surface of the vibrating membrane is provided with a cover, and the cover is provided with a plurality of through holes and the diaphragm is fastened to the big end of the sound concentrator.
  • the small end of the sound concentrator is connected to one end of the air duct, and the other end of the air duct is connected to the small end of the other bell mouth, and the big end of the bell mouth is connected to the small microphone, from the receiving surface of the small microphone to the receiving surface of the small microphone All the connections around the cover are sealed, the small microphone is exposed on the surface outside the sonic concentrator, and the angle of the sonic concentrator and the bell mouth is 90° to 160°;
  • the wire of the small microphone is connected to the signal amplifier, and the amplification rate is determined according to actual needs.
  • the output end of the signal amplifier is connected to the metal shielded isolation wire and then connected to the communication device through the connector;
  • the small microphone directly to the metal shielded isolation line to the communication machine. If the impedance of the small microphone does not match, the output of the small microphone is connected to the metal shielded isolation line through the impedance converter and then connected to the communication machine;
  • the length of the air duct is set to 30mm to 1500mm, the hole is 1mm to 5mm, and the length and hole diameter can be arbitrarily selected according to specific requirements;
  • the device can install a small microphone of all noise-reducing radiation-proof earphones into the bell mouth instead of a small microphone with a technical small microphone placed outside the length of the obedient air duct; or a cover, a diaphragm, a sound concentrator, an air duct
  • the megaphone can connect the small microphones at different distances or far away from the mouth to the mouth by different lengths of air nozzles with different sized bell mouths, thereby achieving the purpose of noise reduction and radiation prevention;
  • the diaphragm of the air duct microphone is mounted on a sound wave concentrator with a curved tube, the sound wave concentrator is buckled into the upper cover, and the back cover is also buckled to the upper cover, and the sound wave concentration with the curved tube is concentrated.
  • the lumen of the device is inserted into the universal transfer arm and is an air duct.
  • the air duct is connected to various small microphones to be selected.
  • Describe a mono-channel, double-eared, all-air-tube, noise-reducing, radiation-proof earphone characterized by:
  • the signal from the plug is connected to the large speaker from the audio signal line of the metal shielded isolation line to which the signal is connected from the communication machine.
  • the other end of the large speaker is connected to the big end of the sound concentrator, and the small end of the sound concentrator is connected to the composite air.
  • the large tube of the conduit, the other end of the large tube is connected to the long end of the tee and fastened with a cable tie, the other end of the tee is connected to the sealing ring, the other end of the sealing ring is connected to the right ear branch air duct, and the right ear branch air duct is another One end is connected to the sealing ring, the other end of the sealing ring is connected to the elbow, and the other end of the elbow is connected to the sound chamber.
  • the bottom surface of the elbow is provided with a mounting plate fixed with 4 screws in the right ear shell and provided with a positioning pin, which is accurately bent. Position, the outlet of the sound chamber is provided with a porous cover plate;
  • a small through tube is arranged on the top of the tee, a small sound wave concentrator is connected to the tee at one end of the small passage tube, and the other end is connected to the small sound chamber, and the sound chamber cover is arranged on the small sound chamber, and the sound chamber cover is arranged Having a plurality of penetrating apertures or incorporating a small through tube into the sound chamber;
  • the structure is provided with a movable slot for the yoke and the right ear branch air duct to move at a set swing angle, the seal ring is disposed at the oscillating axis and is made of a flexible material such as rubber, so that the yoke and the right ear air
  • the activity of the catheter is flexible and the transmission of sound waves is unobstructed;
  • the inner diameter of the small through tube is much smaller than the inner diameter of the tee, and the specific size is determined by the attenuation value of the branch catheter leading to the right ear, or the volume of the ear sound adjusted to be uniform on both sides;
  • the bottom of the tee is provided with a mounting plate, and the mounting plate is provided with a small hole, which is screwed to the bottom surface of the left ear casing 276 and set with a pin, and the tee is accurately mounted on the bottom surface of the left ear casing.
  • the connection between the cover of the right ear chamber and the cover of the left ear chamber is sealed from the sound outlet of the large speaker, so that the sound waves will not leak, and all the sounds from the large speakers will be sent to the left and right ears.
  • the amplifying circuit is installed in the large speaker casing, and the amplification power of the amplifying circuit is selected according to the need, and the current is connected to the power source of the communication device;
  • a complete noise reduction receiving conversion system is set up: the noise reduction one microphone pushes the speaker through the amplification port, the sound outlet of the speaker is connected to the big end of the sound wave concentrator, and the small end of the sound wave concentrator is connected with the small air conduit.
  • the small air duct is passed from the noise reduction universal transmission arm into the left ear casing, connected to the hard joint, the other end of the hard joint is inserted into one end of the small air tube of the composite air duct, and the other end of the small air tube of the composite air duct is connected to the curved
  • the hard tube passes through the isolation plate and is connected to the small end of the small sound wave concentrator through a small hose.
  • the large end of the small sound wave concentrator is connected to the receiving surface of the secondary microphone, and the wire of the secondary microphone is connected to the metal shielding through the control of the switch.
  • this switch can disconnect the receiving system, so that the other party can hear or hear the user's speech, and then connect the communication device through the connector.
  • the battery of the converter is installed in the converter housing, the converter
  • An indicator light is arranged on the outer casing to indicate that the power supply is broken.
  • the light-transmitting body of the indicator light is injection molded on the outer casing of the converter, and the switch control power supply is opened, the switch is sealed with a rubber pad, and the waterproof charging is provided.
  • the jack charges the battery, and the plug-in spacer is inserted into the slot plate between the speaker and the amplifying circuit and the microphone.
  • the flexible material is sealed in the slot plate, and the speaker wiring is sealed from the isolation plate by glue, and the converter housing It is fixed on the universal arm by screws or fixed to the universal arm by injection molding.
  • the composite air duct is provided with two tubes of the size, and the outer surface looks only one. Actually, there are two passages, which are both beautiful and light;
  • the curved hard tube is directly integrated with the tee to form a five-way joint.
  • One end of the combined curved tube is connected to the original one, and the other end of the curved tube is connected with one end of the sealing ring, and the other end of the sealing ring and the universal transfer arm are connected.
  • the air duct at the other end of the universal transmission arm is connected with the small end of the sound concentrator, and the large end of the sound concentrator is connected with the diaphragm, and the structure and connection mode of the original three-way part are unchanged, universal
  • the transfer arm is processed into two plane bolts inserted into the matching holes of the left ear casing, and is fixedly mounted by nuts;
  • a spacer is placed inside the housing to isolate the large speaker from the secondary receiver to prevent the large speaker from interfering with the secondary microphone.
  • the monophonic circuit binaural head-mounted full air duct noise reduction radiation-proof earphone noise reduction microphone according to claim 3 is a device for converting an active audio signal into a passive signal and restored to an active audio signal.
  • the noise-reducing microphone is different in conduction from the above, and the rest of the structure is the same as the noise-reducing structure of the above claims.
  • an air duct microphone is applied, and an end of the universal transfer arm is mounted with a casing, and the soundproof cylinder is installed in the casing, and the sound tube includes a cover, a diaphragm, a sound wave concentrator, and a small air duct.
  • the small air duct is passed from the noise reduction universal transmission arm into the left ear casing, connected to the hard joint, the other end of the hard joint is inserted into one end of the small air tube of the composite air duct, and the other end of the small air tube of the composite air duct is connected to the curved
  • the hard tube passes through the isolation plate and is connected to the small end of the small bell of the small microphone.
  • the large end of the small bell is connected to the receiving surface of the small microphone, and the wire of the small microphone is connected to the metal shielding isolation line through the control of the switch.
  • the receiving line, the switch can open or disconnect the receiving system, so that the other party can hear or hear the user's speech, and then connect the communication device through the connector, so that the passive audio signal is directly sent to the small
  • the microphone generates an active signal without conversion.
  • the above-mentioned cover has a plurality of small through holes on the surface of the outer casing or directly mounts the sound concentrator to the outer surface of the outer casing and clamps the vibration. Surrounding membrane, the respective connections are sealed, the circuit is simple, the cost is low;
  • an audio amplifying circuit is arranged at the output end of the small microphone to amplify the output audio signal of the small microphone, and the amplifying circuit or the amplifying circuit of the large speaker shares the power or is mounted on a circuit board. Install the battery to supply power in the enclosure or to draw power from the communicator;
  • the advantage of this structure is that the power source used is far away from the brain and ears, and the radiation protection effect can be absolutely achieved.
  • the sound-absorbing structure of the sound emitted from the back of the speaker of the earphone is divided into two layers of the cover on the back of the speaker by a cover having a thinner thickness to adapt to the power of the speaker, and the two layers of the cavity have a certain volume, so that the air in the cavity is elastic.
  • the thickness of the cover is selected according to the size of the speaker, fixed on the periphery of the sound concentrator by screws, or glued to the periphery of the sound concentrator;
  • a muffler with a resonant cavity is provided.
  • Several tubes are connected in the resonant cavity.
  • the pipe has a small hole penetrating through the resonant cavity.
  • the first two pipes are combined into one pipe head and then connected to a cover behind a speaker.
  • the sound port that is, the outlet of a cover around the big end of the sound concentrator, is also equipped with a film to waterproof the speaker, and the rear ends of the two tubes are collected in a tube with sound absorbing material, which eventually becomes a gas.
  • the sound in several tubes is sent out from the small hole to the resonant cavity, and resonance occurs in the resonant cavity, that is, the sound cancels the sound mutually, and the sound is eliminated, so that only the person wearing the earphone can hear it.
  • the sound inside the headphones will not affect others.
  • the noise-reducing head-mounted single-ear radiation-proof earphone is provided with a flexible bow clip mounted on the outer casing, and a long clip or other shaped clip is mounted at the end of the bow clip, and a soft sponge is embedded inside the clip;
  • the outer casing of the sound collector of the diaphragm is connected with a universal transfer arm, and the sound concentrator of the sound collector is connected to one end of the air duct in the universal transfer arm, and the other end of the air duct in the universal transfer arm is connected and adjustable An arm, the other end of the adjustable arm is inserted into one end connected to the sealing ring, the other end of the sealing ring is connected to one end of the four-way A tube, and the other end of the four-way A tube is connected to the small microphone tube
  • One end of the sealing ring 295-A is provided with a spring, one end of the spring abuts on a plane on the inner side of the adjustable arm casing, the other end is connected to the inner plane of the sealing ring, and the other end of the sealing ring is connected to the outer side of the four ends of the four-way. Abutting, the other end of the corresponding four-way is connected to one end of the small microphone conduit, and the other end of the small microphone conduit is connected to a small microphone with
  • the audio signal is connected from the plug connector to the metal shielded isolating wire and then connected to the speaker, the sound emitting surface of the speaker is connected to the sound wave concentrator, the small end of the sound wave concentrator is connected to the air duct, and the other end of the air duct is connected
  • One end of the four-way B tube is connected, the other end of the B tube is connected to the sound chamber, the sound chamber is provided with a cover plate, and the sound chamber portion of the cover plate is provided with a plurality of small holes,
  • the outer periphery of the cover plate is provided with a cushion, and the cover plate is provided with four or more rectangular hole buckles fixed to the protruding inverted buckle of the outer casing, and four universal screws are fixed on the inner side of the cover plate;
  • the air duct and the small microphone duct are combined to form a noodle-shaped flat shape, or are formed into other shapes, one end is installed in the soft sleeve, and the soft sleeve is embedded on the outer periphery of the outer casing;
  • One end of the adjustable arm connecting sealing ring is provided with a thin external gear, and is provided with an inverted buckle, which is installed in the outer casing by the reverse buckle activity, and the outer gear is stepped by the claws in the outer casing to position the gear, that is,
  • the adjustable arm can be rotated and positioned by 355°, and the adjustable arm also functions as a slidable back cover;
  • the speaker and the sound concentrator are mounted together in a casing, the casing is provided with a clip, the clip can be clamped on the clothes, or the clip is not provided, and the air duct and the air duct are installed at the other end of the outer casing, and the soft cover is provided.
  • the other end of the outer casing is also provided with a soft cover at the metal shielding isolation line;
  • a clip is mounted on the outer casing of the listener.
  • the center of the clip is provided with a bow arm.
  • the bow arm is capable of 360° rotation, and the rotation of the adjustable arm enables the earphone to be used for both left and right ears.
  • the four-way microphone air duct adapter tube and the speaker air duct adapter tube are arranged side by side, because the microphone air duct is connected to the adjustable arm B through the four-way A tube, and the adjustable arm needs 355° rotation. Therefore, it must be placed in the center position to facilitate rotation and sealing in the sealing sleeve, and the adapter tube of the speaker tube is placed in the eccentric position, but the sound chamber is still in the center position, which does not affect the sound transmission of the speaker, and constitutes Side by side setting;
  • Such a four-way arrangement can reduce the thickness of the outer casing of the earphone, making the shape thin, beautiful in appearance, and light in weight, and the user feels relaxed and comfortable;
  • the outlet of the sound chamber 291-1301, the outlet outside the machine on the back of the speaker is the inlet of the muffler of Fig. 24.
  • a partition is provided between the cavity in which the speaker is mounted and the small cavity at the lower end of the speaker casing, except that the conduit and the wire are passed through and sealed with glue.
  • Figure 1 is a view showing the connection and structure of an air duct microphone, which is a schematic view of a housing;
  • Figure 2 is an F-direction view
  • Figure 2-1 is a M-direction view
  • Figure 3 is a schematic view of the air duct microphone with a diaphragm mounted on the acoustic concentrator and mounted in the housing;
  • Figure 4 is a cross-sectional view of the steel bow and right ear branch air duct package
  • Figure 5 is an outline view of the steel bow after being unfolded
  • Figure 6 is a cross-sectional view of the right ear profile H1-H1 of the noise-reducing head-mounted mono binaural safety earphone;
  • FIG. 7 is a cross-sectional view of the sound-emitting cavity J-J of the noise-reducing head-mounted safety earphone
  • Figure 8 is a cross-sectional view of Q2-Q2, which can be preferably applied to the earphones shown in Figure 12, and can be applied to most types of earphones;
  • Figure 9 is a cross-sectional view of Q-Q
  • Figure 10 is a cross-sectional view of Q1-Q1, which can be applied to a variety of earphones, the cross-section of Figures 8, 9, and 10 or two separate air ducts, or bonded together by a separate air duct;
  • Figure 11 is a schematic diagram showing a monophonic binaural air duct earphone that is transmitted by an amplifying circuit into a passive signal by an air duct;
  • Figure 12 is a schematic view of a monophonic binaural air duct earphone with a diaphragm air duct microphone
  • Figure 13 is an enlarged view showing Figure 12;
  • Figure 14 is a cross-sectional view showing the K-K of the right ear of the monophonic binaural air duct earphone
  • Figure 15 is a schematic view showing the structure of the five-way switch in the listener
  • Figure 16 is a cross-sectional view showing the end of the gimbal arm
  • Figure 17 is a cross-sectional view showing the position of the universal arm 277-1 mounted on the outer casing, showing a two-way plane or a straight plane;
  • Figure 18 is a schematic view showing the installation of the universal arm at the end of the converter and the sound insulation of the speaker and the small microphone;
  • Figure 19 is a cross-sectional view of A2-A2;
  • Figure 20 is a left side view of the noise-reducing head-mounted single-ear radiation-proof earphone structure
  • 21 is a front elevational view showing the structure of a noise-reducing head-mounted single-ear radiation-proof earphone
  • FIG. 22 is a schematic structural view of a noise reduction earphone type single ear radiation protection earphone
  • Figure 23 is a dual type thin cover speaker back muffler
  • Figure 24 is a muffler provided with a resonant cavity and having a sound absorbing device
  • Figure 25 is a cross-sectional view showing an enlarged view of C
  • Figure 26 is a schematic view of the universal transfer arm 200-B skipping
  • Figure 27 is a cross-sectional view taken along line C-C of Figure 28;
  • Figure 29 is a cross-sectional view taken along line B-B of Figure 28;
  • FIG. 30 is a partial schematic view showing another microphone mounting method of the noise reduction radiation protection earphone structure.
  • the utility model is characterized in that: the noise reduction head-mounted radiation protection earphone is adopted in the embodiment, and the structure is provided with a left ear hearing cover 195, a left ear housing 195-1, a right ear hearing cover 194, a right ear housing 194-1, a headband 185, a switch and switch housing 191, a noise reduction transmission arm 198, a noise reduction converter 196, a housing 195-1, a speaker housing 190, and a plug 193; and a noise reduction conversion system is provided: the noise reduction primary microphone, the active audio signal is converted to none The transmission of the source audio signal is set up with a microphone lead connected to the secondary audio amplifier circuit to drive the speaker, the circuit amplification power and the number of stages and performance are selected according to the length and diameter of the selected diaphragm air duct, the speakers 207, 208 The sound port is connected to the big end of the sound wave concentrators 205, 206, and the small end of the sound wave concentrators 205, 206 is
  • the active part of the conversion system is provided with an electronic circuit board and is provided with a power supply circuit for the battery supply circuit and the device, a charging circuit and a charging socket connected to the battery, a power indicating light emitting tube and a power switch, and the above-mentioned conversion system is active.
  • the audio signal devices are all mounted in the converter housing, and the conversion system's speakers are mounted in the middle of the microphone at a distance from the primary microphone.
  • the microphone uses active conversion to passive transmission and then restores to active transmission.
  • the air duct can be set long and the microphone is close to the sounding port to achieve noise reduction and high prevention. The damage of the communication machine to the ears and the brain.
  • the left ear air duct 187-1 has one end connected to the sound chamber 209-1 and the other end is connected to the small end of the sound wave concentrator 205, the sound concentrator 205 is connected to the speaker 207 at the big end, and the other end of the speaker 207 is connected to the metal shield wire 193;
  • the right ear air duct 184-1 is connected to the right ear or the left ear.
  • the other end of the right ear acoustic concentrator 206 is connected to the right ear speaker 208, and the other end of the right ear speaker 208 is connected to the metal shielded wire 193, and is connected to one end of another metal shielded wire 192 through the switch 191.
  • the other end of the metal shielded wire 192 is connected to the plug 193.
  • the three air ducts are glued flat and the outside is wrapped with a flexible material.
  • This example uses a long-distance noise reduction air duct microphone
  • the vibrating membrane 262 is disposed at the large end of the acoustic concentrator 263, and the outer surface of the vibrating membrane 262 is provided with a cover 261 which is provided with a plurality of through holes and fastens the vibrating membrane 262 to the large end of the acoustic concentrator 263.
  • the small end of the acoustic wave concentrator 263 is connected to one end of the air duct 264, and the other end of the air duct is connected to the small end of the bell mouth 265.
  • the large end of the bell mouth 265 is connected to the small microphone, and the receiving surface of the small microphone 266 is received. Until all the connections at the periphery of the cover 261 are all sealed, the angles of the sonic concentrator 263 and the bell mouth 265 are both 120°;
  • the wire 267 of the small microphone is connected to the amplification port 68, and the output end of the amplification port is connected to the metal shielded isolation wire and then connected to the communication device through the connector;
  • the air duct 264 has a length of 300 mm and a hole of 3 mm.
  • the device can mount all of the noise-reducing and radiation-proof microphones into the bell mouth 265 in place of the small microphone 266 in which the prior art microphone is placed outside the length of the obedient air duct.
  • the wire 267 is directly connected to the metal shielded isolation line to the communication device. If the impedance of the small microphone is not matched, the output of the small microphone is connected to the metal shielded isolation line through the impedance converter 267-1.
  • the communication machine; the rest of the settings are the same as in the second embodiment.
  • a sound tube composed of a cover 261, a diaphragm 262, a sound concentrator 265, and an air duct is used, and the sound tube can connect a small microphone far away from the mouth to the mouth with a bell mouth of different sizes, thereby achieving noise reduction.
  • the purpose and the effect of radiation protection are the same as those of the second embodiment.
  • This example uses a mono-channel dual-ear headed full air duct noise reduction radiation-proof earphone
  • the signal from the plug 290 is connected to the large speaker 284 from the audio signal line of the audio signal line of the metal shielded isolation line 289 to which the signal is connected from the communication device, and the other end of the large speaker 284 is connected to the large end of the sound concentrator 284-1.
  • the small end of the device 284-1 is connected to the large tube 288 of the composite air duct 283, and the other end of the large tube 288 is connected to the long end of the tee 290 and fastened with the cable tie 300.
  • the other end of the three-way 290 is connected to the sealing ring 295, and the sealing ring
  • the other end of the 295 is connected to the right ear branch air duct 294, and the other end of the right ear branch air duct 294 is connected to the sealing ring 292.
  • the other end of the sealing ring 292 is connected to the elbow 291, and the other end of the elbow 291 is connected to the sound chamber 291-1.
  • the bottom surface of the head is provided with a mounting plate 274-1 which is fixed in the right ear shell 274 by four screws 293 and is provided with a positioning pin, the position of the accurate elbow, and the outlet of the sound chamber is provided with a porous cover plate;
  • a small through pipe 302 is disposed on the upper side of the three-way 290, and one end of the small through-pipe 302 is provided with a small sound wave concentrating port 302-1 connected to the three-way 290, and the other end of the small-passing pipe 302 is connected to the small sound chamber 301, and the small sound chamber 301 is provided There is a sound chamber cover plate 301-1, and the sound chamber cover plate 301-1 is provided with a plurality of penetrating small holes;
  • the structure is provided with a movable slot 270 for enabling the yoke 273 and the right ear branch air duct 272 to move at a set swing angle, the seal ring 295 is disposed at the pivoting axis and the bow 273 and the right are made of a flexible material such as rubber
  • the activity of the ear air duct 272 is flexible, and the transmission of sound waves is unobstructed;
  • the inner diameter of the small through tube 302 is much smaller than the inner diameter of the tee 290, and the specific size is determined by the attenuation value of the branch duct leading to the right ear, so that the volume of the ear sounds on both sides is consistent;
  • the bottom of the tee 290 is provided with a mounting plate 297.
  • the mounting plate 297 is provided with a small hole, and is mounted on the bottom surface of the left ear housing 276 with a screw 290-2 and a position pin is set, and the tee is accurately mounted on the left ear housing 276.
  • On the bottom surface On the bottom surface.
  • the connection between the cover of the right ear chamber and the cover of the left ear chamber from the sound outlet of the large speaker 284 is completely sealed. The sound waves will not leak, and all the sounds from the large speakers 284 will be sent to the left and right ears.
  • the amplification circuit is installed in the large speaker housing 286-A, and the amplification power of the amplification circuit is selected according to needs;
  • a complete noise reduction receiving conversion system is set up: the noise reduction one microphone pushes the speaker 278 through the amplification port 282-A, and the sound outlet of the speaker 278 is connected to the big end of the sound wave concentrator 278-B, the sound concentrator The small end of the 278-B is connected to the small air duct 277-A, and the small air duct 277-A is passed from the noise reduction universal transfer arm 277 into the left ear housing 276, to the hard connector 275, and to the other end of the hard connector 275.
  • the other end of the small tube 289 of the composite air duct 283 is connected to the curved hard tube 275-A through the partition plate 285 through the small hose to the small secondary acoustic wave concentrator 275
  • the large end of the sound concentrator 275 is connected to the receiving surface of the secondary receiver 275-B, and the wire of the secondary receiver 275-B is connected to the receiving line of the metal shielded isolation line 287 through the control of the switch 286.
  • the receiving system is disconnected so that the other party hears or can not hear the user's speech, and then the communication device is connected through the connector 290.
  • the battery of the converter is installed in the converter casing 278-A, and the converter casing 278-A is provided.
  • a microphone 280 is provided with a plug-in spacer 278-C inserted into the slot plate 278-D, a flexible material seal is placed in the slot plate 278-D, and the wiring of the speaker 278 is sealed from the spacer 278-C by glue.
  • the converter casing 278-A is fixed on the universal arm 277 by screws 277-A.
  • the composite air duct is provided with two tubes of the size, and the outer surface looks only one, and actually has two passages, which are both beautiful and light. ;
  • a spacer is provided in the housing 286-A to isolate the large speaker 284 from the secondary receiver 275-B to prevent the large speaker 284 from interfering with the secondary receiver 275-B.
  • the mono-channel dual-ear head-mounted all-air duct noise reduction radiation-proof earphone noise reduction microphone described in Embodiment 6 is a device that converts an active audio signal into a passive signal and restores the active audio signal.
  • the noise-reducing microphone of this example is different from that of Embodiment 6, and the rest of the structure is the same as that of the noise-reduction radiation-proof earphone of Embodiment 6.
  • an air duct microphone is applied, and the end of the universal transfer arm 277-1 is mounted with a casing 278-C.
  • the casing 278-C is provided with a sound tube 262-1, and the sound tube 262-1 includes a cover. 261, a diaphragm 262, a sound concentrator 263, a small air duct 264, the small air duct 264 is passed from the noise reduction universal transmission arm 277-1 to the left ear housing 276-1, and is connected to the hard joint 275- 1.
  • the other end of the hard joint 275-1 is inserted into one end of the small tube 289-1 of the composite air duct 283-1, and the other end of the small tube 287-1 of the composite air duct 283-1 is connected to the bent hard tube 275-C.
  • the small hose connected to the isolation plate 285-1 is connected to the small end of the small bell 271-1 of the small microphone 275-D, and the large end of the small bell 271-1 is connected to the receiving surface of the small microphone 275-D, the small microphone
  • the wire of 271-1 is connected to the receiving line of the metal shielded isolation line 287-1 through the control of the switch 286-1.
  • the switch can turn the receiving system on or off, so that the other party can hear or hear the user's speech.
  • the cover 261 is provided with a plurality of small through holes on the outer surface of the outer casing 278-C.
  • the peripheral circuits of the above joints are sealed and relatively simple and low in cost;
  • the outer casing 278-C is provided with an isolating plate 285-1 to isolate the large speaker 284-1 from the small microphone 275-D.
  • the wire is sealed from the separating plate 285-1 by glue to prevent the large speaker 284-1 from interfering with the small microphone 275. -D.
  • an audio amplifying circuit is arranged at the output end of the small microphone to amplify the output audio signal of the small microphone, and the amplifying circuit and the amplifying circuit of the large speaker share the power supply.
  • the muffling structure of the sound emitted from the back of the speaker of another earphone is set: a muffler having a resonant cavity 306 is disposed, and a plurality of tubes are connected in the resonant cavity 306, and a small hole penetrating through the resonant cavity is opened in the pipe.
  • the first two tubes are combined into one tube head and then connected to the sound outlet of a cover behind a speaker, that is, the outlet of a cover around the big end of the sound concentrator, which is also equipped with a film to waterproof the speaker.
  • the rear ends of the two tubes are collected in a tube with sound absorbing material, and finally become a gas out of the muffler.
  • the sound in several tubes is sent out from the small hole 307 to the resonant cavity 306, and resonance occurs in the resonant cavity 306. That is, the sounds cancel each other out of the sound, and the purpose of anechoic is achieved, so that only the person wearing the earphone can hear the sound inside the earphone, so that it does not affect others.
  • a noise-reducing head-mounted single-ear radiation-proof earphone is provided with a flexible bow clamp 191-1 installed in the outer casing 200-C, and a long clip 202-1 is mounted at the end of the bow clamp, and the clip is embedded inside.
  • a soft sponge
  • the outer casing of the diaphragm-mounted sound collector 196-2 is connected to the universal transfer arm 198-2, and the sound concentrator of the sound collector 196-2 is connected to one end of the air duct in the universal transfer arm 198-2, the universal joint
  • the other end of the air duct in the transfer arm 198-2 is connected to the adjustable arm 200-B, and the other end of the adjustable arm 200-B is inserted into one end connected to the seal ring 295-A, the seal ring 295-A
  • the other end of the four-way 290-A is connected to one end of the A-tube, and the other end of the four-way 290-A is connected to one end of the microphone tube 203-1.
  • the outer ring 295-A is provided with a spring 295-B.
  • One end of the spring 295-B abuts on the inner side of the outer casing of the adjustable arm 200-C, the other end is connected to the inner plane of the sealing ring 295-A, and the other end of the sealing ring 295-A is connected to the end of the four-way 209-A.
  • the outer side is abutted, the other end of the four-way 209-A is connected to one end of the microphone duct 203-1, and the other end of the microphone duct 203-1 is connected to the microphone 204-2 with a sound concentrator.
  • the microphone 204-2 is connected to the metal shielded isolation line, and then connected to the connector 206-1;
  • the audio signal is connected from the plug connector 206-1 to the metal shielded isolation line 205-1 and then to the speaker 207-2.
  • the sound output surface of the speaker 207-2 is connected to the sound concentrator 205-2, and the sound concentrator 205
  • the small end of the -2 is connected to the air duct 202-1, the other end of the air duct 202-1 is connected to one end of the B tube of the four-way 290-B, and the other end of the B tube is connected to the sound chamber 301-2.
  • the sound chamber 301-2 is provided with a cover plate 301-C, and the sound chamber 301-B of the cover plate 301-C is provided with a plurality of small holes, and the outer periphery of the cover plate 301-C is mounted.
  • the air duct 202-1 and the microphone duct 203-1 are integrally formed into a noodle-shaped flat shape, one end is installed in the soft sleeve 276-C, and the soft sleeve 276-C is embedded on the outer periphery of the outer casing 200-C;
  • One end of the adjustable arm 200-B connecting seal ring 295-A is provided with a sheet-shaped external gear 200-3, and is provided with an inverted buckle, which is installed in the outer casing 200-C by the reverse buckle activity, and the outer gear 200-3 is provided by the outer casing
  • the inner claw 200-4 performs the stepping positioning to position the gear 200-3, that is, the adjustable arm 200-B can be rotated and positioned by 355°, and the adjustable arm 200-B also functions as a slidable back cover. effect;
  • the speaker 207-2 and the sound concentrator 205-2 are mounted together in the outer casing 204-A, and the outer casing 204-A is provided with a clip 200-D, which can be clamped on the clothes using the clip 200-D, and the outer casing 204-A is mounted.
  • a soft sleeve 276-D is provided at the other end of the air duct 203-1 and the air duct 202-1, and a soft sleeve 276-E is also disposed at the other end of the outer casing 204-A.
  • a clip 200-D is mounted on the listener housing 204-A, and a bow arm 199-2 is mounted at the center of the clip 200-D.
  • the bow arm 199-2 is capable of 360° rotation, and it cooperates with the adjustable arm 200- The rotation of B allows the earphone to be used with both left and right ears.
  • the four-way structure of FIG. 27, FIG. 28, and FIG. 29 is provided instead of the structure of the four-way 209A in FIG. 25, and the dimensions of the outer casing 200-C and the cover plate 301-C and the adjustable arm rear cover are set to Matches the size of the four-way after the substitution.
  • the clip 200-D on the earphone casing 204-A is removed while the ear hook 211-1 is mounted, and the rest of the structure is the same as that described in the embodiment 11, and the shape of the hook is as shown in FIG.
  • the bow arm 199-2 is removed, and the hook 211-1 is attached to the clip 200-E, and the rest is the same as in the eleventh embodiment.
  • the invention also includes an active noise reduction function for the air duct speaker, in which a noise is collected in the environment of the microphone housing in the auditory environment, and the collected noise is sent to the noise reduction circuit.
  • the noise reduction circuit uses the LM1894 or LM832 chip or another corresponding noise reduction circuit to perform the arithmetic processing. After the air duct speaker emits sound waves with the opposite phase of noise and the same amplitude to cancel the noise, the ear will feel the noise weakening or disappearing. Or use an air duct microphone to collect the noise on the side of the ear and send it to the noise reduction circuit.
  • the noise reduction circuit uses the LM1894 or LM832 chip or another corresponding noise reduction circuit to perform the arithmetic processing, and then emits an opposite phase to the noise through the air duct speaker.
  • the same sound waves are used to counteract the noise, and the effect is better.
  • the small microphone in the air duct microphone is set in the small cavity below the speaker housing in Figure 30, 204-2.
  • the diaphragm using the air duct microphone has been close to the mouth and has achieved active noise reduction and passive noise reduction of the soft material on the earpiece. In addition to the technical requirements for electronic active noise reduction, the three can be combined. Achieve the desired results.
  • the mounting manner of the small microphone 204-2 of the present embodiment is different from that of FIG. 21 in that a lower cavity of the outer casing of the speaker is provided with a small cavity, and the small microphone 204-2 is mounted on the speaker casing. Inside the small cavity.

Abstract

本发明涉及降噪防辐射耳机,主要是设置了降噪音频信号转换系统,有效地将有源降噪音频信号的传输转换为无源音频信号的传输,可经过很长达1000mm后又恢复到有源音频信号传输,另外还设置了一种用空气导管直接驱动远距离的麦克风,二种方法均能使人体长距离隔绝通信机的辐射并解决了麦克风必须要置在空气导管之外的技术问题,解决长时间守候在电器和其它通信机受积累伤害大脑的问题。所以这项发明是既高强度地防辐射又防噪声的优良的安全的耳机。

Description

降噪防辐射耳机 技术领域
本发明涉及到一种防辐射或降噪防辐射耳机,更具体地说,涉及到一种用于手机等高频磁场等辐射较强的通信设备的防辐射耳塞机和立体声防辐射耳塞机,尤其涉及到一种频率响应得到真正改善的,而且能产生更好的立体声效果的耳塞机,比传统的线控耳机的频率响应还要好。
背景技术
常用的耳塞机,如手机或其它通信设备上配带的耳塞机,包括插头、导线和耳塞头,耳塞头内装微型扬声器。由于直接用手机接打电话,手机所产生的超高频磁场等有害辐射线会严重刺激人的大脑神经,影响人的身体健康,人们往往使用耳塞机接打手机以减少超高频词场以及电波、热能等多种辐射线对人体大脑的损害。但是,使用耳塞头内直接安装扬声器的普通耳塞机仍然不能避免收到诸如超高频词场之类的辐射线通过耳塞头传送到耳朵内部直接危害大脑的危险。另外,这种内装扬声器的耳塞头本身带有的高1600高斯的永久性磁体磁场同样对人体大脑也会造成损伤。因此,长时间、高频次的使用手机或此类耳塞机都容易产生头痛、头晕、头麻等症状。
已有技术的防电磁波辐射的耳机,如专利号为:ZL02244828.4,名称为:无辐射耳机,虽然能减少电磁辐射,但由于其一仅有5-10cm的声波通道,其二没有设置金属屏蔽隔离线所以达不到2mG(毫高斯,以下同)或2mG以下的要求,而控制在2mG或2mG以下,是由于电磁场和电磁波对人体有伤害,手机发明人美国斯坦福大学博士、美国工程院博士、台湾交通大学施敏教授提出的要求。因此,之前技术的耳机满足不了上述电磁波辐射的要求。因此,频率响应不好;本发明人申请的专利号为:200810167226.5,名称为:降噪防辐射耳机的申请文件,也公开了降噪防辐射耳机的五项发明,公开了实现防辐射的办法和提高音质的方 法,已获得了世界九个国家的专利,但是该专利的音质没超越传统耳机的,2017年5月21日本申请人申请的安全耳机,申请号为201710417231.6就是公开了音质超越传统的耳机而且能再提高防辐射的效果,达到无辐射的效果。
综上所述,人们非常需要有一种真正能够高性能防止电磁辐射和频率响应比传统耳机更好的耳机,一种频率响应得到真正改善的耳机,一种具有无辐射、更好的立体声效果的耳机。
发明内容
本发明涉及安全的耳机,主要包括线控式的安全耳机和头戴式的安全耳机,采用了不同频响的多个扬声器分别供二个耳朵听,所以频率响应特别好,比传统的耳机还要好,而且设置了降噪声特殊方案,更重要是设置了降噪音频信号转换系统,有效地将有源降噪音频信号的传输转换为无源音频信号的传输,又恢复到有源音频信号的传输使空气导管无源的信号传输可置于1000mm长度或1000mm之外的长度,因为设置了金属屏蔽隔离线所以使人体长距离隔绝通信机的辐射,但话筒还是和发音口保持很近的距离,从而达到了良好地降噪又达到高度地防辐射效果并且具有高音质,解决了现有防辐射耳机话筒必须要置在空气导管之外的技术问题,因为话筒离远了话筒的效果就差了,声音还小。
所以这项发明确实是既高强度地防辐射又高音质还防噪声的优良的安全的耳机。
一种降噪防辐射耳机,该降噪头戴式防辐射耳机其结构设置有左耳听罩、音腔罩、左耳外壳、右耳听罩、右耳外壳、头带、开关及开关外壳、降噪传输臂、降噪转换器、左外壳、扬声器外壳、插头;设置有降噪转换系统
:将降噪一次话筒280,有源音频信号转换为无源音频信号的传输,再恢复到有源音频信号的传输,设置了一次话筒引线连接二级音频放大器电路推动扬声器,电路放大功率和级数及性能根据所选定的振膜空气导管的长度、直径而选定,扬声器、的发音口连接声波集中器的大端,声波集中器、的小端通过铆钉与振膜 空气导管的一端连接,振膜空气导管的另一端和喇叭口音腔的小端连接,喇叭口音腔的大端与二次话筒的受话面连接;从所述的扬声器的发音口通过空气导管至二次话筒受话面的连接均为密封的;二次话筒的另一端引线连接金属屏蔽隔离线的一端,所述的金属屏蔽隔离线的另一端连接插头的一端,插头的另一端与通信机的插座连接;
转换系统有源部分设有电子线路板并设有电池供给电路和器件的电源,设有与电池连接的充电电路和充电插座,设有电源指示发光管及电源开关,上述的转换系统的有源音频信号的器件全部安装在转换器外壳内,转换系统的扬声器安装在离一次话筒一定距离的话筒中部或左耳外壳音腔的外侧,电路可根据振膜空气导管长短改变电路的放大功率选用不同的芯片及不同的电路。
话筒采用了有源转换为无源传输再恢复到有源的传输可将空气导管设置得很长,并且使话筒离发音口很近,以达到降噪声的效果,达到了极高的防止通信机对耳朵及大脑的伤害。
左耳空气导管一端接发声音腔的入口另一端接声波集中器小端,所述声波集中器大端连接扬声器,扬声器另一端引线连接金属屏蔽导线,右耳空气导管一端接右耳发声音腔的入口另一端顺着金属弓的外侧或内侧经过左耳外壳与左耳空气导管平行到扬声器外壳连接右耳声波集中器小端,右耳声波集中器另一端连接右耳扬声器,右耳扬声器另一端引线连接金属屏蔽导线,通过开关接到另一段金属屏蔽导线的一端,所述的金属屏蔽导线的另一端均连接插头。或者将左右耳两只扬声器及左右耳声波集中器和二次话筒设在开关外壳内,连接方式不变,发音腔的出口设单孔或多个小孔,上述扬声器的对流孔设为向安装的外壳的外面排,话筒与扬声器要进行隔离;
三条空气导管平排粘合,或三角合并为一体,或三角合并为一体外面用柔性材料包裹,或三条空气导管上述情况控制为一体,不用任何材料包围;
或者设右耳的空气导管从扬声器外壳斜拉到右耳发声音腔的入口连接,即不 顺着金属弓引过;
或者设上述三条空气导管从发送通信机来的音频信号的扬声器外壳的开关前面引出,或者所有的空气导管都从E面引出,即在图29所示的E面引出,连接到左耳外壳内;
装配时外壳每个缝都要涂胶水密封防水。
如以上所述的降噪防辐射耳机,远距离降噪的空气导管麦克风,
进一步设置是
设置振动膜安装在声波集中器的大端,振动膜的外面加上盖子,盖子上设有多个通孔并将振动膜扣紧在声波集中器的大端。所述的声波集中器的小端连接空气导管的一端,空气导管的另一端连接另一个喇叭口的小端,所述的喇叭口的大端连接小型麦克风,从小型麦克风的受话面一直到盖子的周边所有的连接处全部为密封的,小型麦克风外露在声波集中器之外处的表面加套密封,声波集中器和喇叭口的角度均为90°到160°;
小型麦克风的导线连接信号放大器,放大的动率根据实际需要确定,信号放大器的输出端连接金属屏蔽隔离线再通过连接器接通信机;
或者将小麦克风直接连接金属屏蔽隔离线到通信机,如果小型麦克风的阻抗不匹配就在小型麦克风的输出端通过阻抗变换器接到金属屏蔽隔离线再接到通信机;
空气导管长设为30mm至1500mm,孔为1mm至5mm,根据具体要求任意选取长度和孔直径;
本装置能将所有降噪防辐射耳机的小麦克风安装到喇叭口中取代有技术小麦克风置于听话的空气导管长度以外位置的小麦克风;或者将盖子、振动膜、声波集中器、空气导管构成的传声筒,该传声筒能用不同尺寸的喇叭口将离嘴不同距离位置或很远位置的小麦克风由不同长度的空气导管连接到嘴边,达到了降噪 的目的和防辐射的效果;
描述一种空气导管麦克风拾音器的结构:
所述的空气导管麦克风的振膜安装在带弯管的声波集中器上,声波集中器是用倒扣扣到上盖内,后盖也用倒扣扣到上盖,带弯管的声波集中器的管腔插入万向传输臂内是空气导管的,空气导管通过转接接到要选用的各种小麦克风。
如以上所述的降噪防辐射耳机,
描述一种单声道电路双耳头戴式全空气导管降噪防辐射耳机,其特性在于:
从插头的信号从通信机连接了信号的金属屏蔽隔离线的音频信号线的接听信号线接到大扬声器,大扬声器的另一端连接声波集中器的大端,声波集中器的小端连接复合空气导管的大管,大管的另一端连接三通的长端并用扎带扎紧,三通的另一端接密封圈,密封圈的另一端接右耳分支空气导管,右耳分支空气导管的另一端连接密封圈,密封圈另一端连接弯头,弯头的另一端连接音腔,弯头的底面设置了安装板用4只螺丝固定在右耳壳内并设有定位销,准确弯头的位置,音腔的出口设多孔的盖板;
三通的上面设一小通管,小通管的一端设有小声波集中器连接三通,小通管另一端连接小音腔,小音腔上面设有音腔盖板,音腔盖板设有多个穿透的小孔,或者将小通管合并到音腔;
该结构设置了活动槽使弓架和右耳分支空气导管能在设定的摆动角活动,密封圈设在所述的摆动的轴心并用橡胶等柔性材料制成,使弓架和右耳空气导管的活动灵活,声波的传送无阻;
小通管的内径比三通的内径小得多,具体的尺寸由通向右耳的分支导管的衰波值来计算确定,或调整到两边的耳朵声音音量一致;
三通的底部设有安装板,安装板上设有小孔,用螺丝安装到左耳外壳276的底面上并设定位销,将三通准确安装在左耳外壳底面上。从大扬声器出音口一直 的右耳音腔的盖板及至左耳音腔的盖板的连接处全部密封,使声波不会泄漏,使大扬声器发出的声音全部送到左右耳朵听。
如果音量太小或在大扬声器前端设一个音频放大电路,放大电路安装在大扬声器外壳内,放大电路放大功率的大小根据需要选定,电流接通信机来的电源;
设置了一个完整的降噪声的受话转换系统:降噪的一次话筒通过了放大口推动扬声器,扬声器的出音口连接声波集中器的大端,声波集中器的小端连接小空气导管,小空气导管从降噪万向传输臂穿到左耳外壳内,连接到硬连接头,硬连接头的另一端插到复合空气导管的小管的一端,复合空气导管的小管的另一端连接弯曲的硬管穿过隔离板通小软管接到小声波集中器的小端,小声波集中器的大端连接二次话筒的受话面,二次话筒的导线通过开关的控制接到金属屏蔽隔离线的受话线,此开关可将受话系统开断,使对方听到或听不到使用者的讲话,再通过连接器连接通信机,转换器的电池安装在转换器外壳内,转换器外壳上设有指示灯指示电源开断,指示灯的透光体是注塑在转换器的外壳上,设有开关控制电源的开断,开关用橡胶垫密封,设有防水的充电插孔对电池充电,扬声器与放大电路及一次话筒三者之间设有插入式隔离板插入槽板,槽板内放置柔性材料密封,扬声器的接线从隔离板穿过用胶水密封,转换器外壳用螺丝固定在万向臂上或用注塑固定到万向臂上,设置的复合空气导管一管上设有大小两管,外表看起来只有一条,实际有两条通道,既美观又轻便;
或者将弯曲的硬管直接与三通合并为一体成为五通,合并上的弯管一端与原来连接方式一样,弯管的另一端与密封圈一端连接,密封圈的另一端与万向传输臂中的空气导管连接,万向传输臂的另一端的空气导管与声波集中器的小端连接,声波集中器的大端安装振膜连接,原来三通部分的结构和连接方式不变,万向传输臂加工为两平面的螺栓插入左耳外壳相配的孔,用螺母固紧安装;
外壳内设有隔离板将大扬声器与二次受话器隔离,以免大扬声器干扰二次话筒。
如以上所述的降噪防辐射耳机,
其特性在于:
根据权利要求3所述的单声道电路双耳头戴式全空气导管降噪防辐射耳机降噪麦克的结构是将有源的音频信号转换为无源的信号又恢复到有源音频信号的装置。
本项降噪的麦克的传导方式与上述的不同,其余结构与上述权利要求降噪安全的结构是一样的。
本项是应用了空气导管麦克风,将万向传输臂的端头安装一个外壳,所述的外壳内安装传声筒,所述的传声筒包括盖子、振动膜、声波集中器、小空气导管,所述的小空气导管从降噪万向传输臂穿到左耳外壳内,连接到硬连接头,硬连接头的另一端插到复合空气导管的小管的一端,复合空气导管的小管的另一端连接弯曲的硬管穿过隔离板通小软管接到小麦克风的小喇叭口的小端,小喇叭口的大端连接小麦克风的受话面,小麦克风的导线通过开关的控制接到金属屏蔽隔离线的受话线,此开关能将受话系统开通或断开,使对方听到或听不到使用者的讲话,再通过连接器连接通信机,这样即是无源的音频信号直接送到小麦克风产生有源的信号,无需转换,上述的盖子靠着的外壳面开有多个小透孔或者将声波集中器直接安装到外壳开多个小孔面内并夹紧振动膜,上述的各连接处的周边均为密封的,电路较为简单,成本也较低;
外壳内设有隔离板将大扬声器与小麦克风隔离,导线从隔离板穿过用胶水密封,以免大扬声器干扰小麦克风器。
如果小麦克风的输出信号功率不够,在小麦克风的输出端设一个音频放大电路,放大小麦克风的输出音频信号,此放大电路或者和大扬声器的放大电路共用电源或共同安装在一个线路板上,安装电池在外壳内供电或者从通信机引出电源线供电;
这种结构的优点就是所用的电源都远离大脑和耳朵了,能绝对达到防辐射 效果。
如以上所述的降噪防辐射耳机,
其特性在于:
设置耳机的扬声器背面发出的声音的消声结构:用厚度较薄相适应扬声器功率的罩子分两层腔罩在扬声器的背面,两层腔均有一定的体积,使腔内的空气具有弹性,罩的厚度根据扬声器的大小而选定,用螺丝固定安装在声波集中器的周边上,或用胶水粘到声波集中器的周边;
或者设置一个有共振腔的消声器,共振腔内通上几条管子,管子上开有穿透共振腔密布的小孔,前面两条管子合并为一个管头后接在一个扬声器背后一个罩子的出音口,也就是接到声波集中器大端的周边一个罩子的出口上,这个出口还装有一层薄膜对扬声器防水,后面两条管的后端汇集在一条接有吸音材料的管子,最终成为气体流出消声器,几条管子内的声音就从小孔向共振腔送出,就在共振腔内产生共振,即声音互相抵消声音,而达到了消声的目的,这样便只有戴耳机的人才能听到耳机内声音,起到保密作用也不会影响到别人。
如以上所述的降噪防辐射耳机,
其特性在于:
降噪声头戴式单耳防辐射耳机设置有弹性的弓夹安装在外壳,在弓夹的端头安装长形的夹片或其它形状的夹片,夹片内侧嵌有柔软的海绵;
装振膜的集音器的外壳连接万向传输臂,集音器的声波集中器连接万向传输臂中的空气导管的一端,所述万向传输臂里的空气导管的另一端连接可调臂,所述的可调臂另一端插入连接到密封圈的一端,所述的密封圈的另一端连接四通的A管的一端,所述的四通的A管的另一端连接小麦克风导管的一端,密封圈295-A外面设有弹簧,弹簧一端紧靠在可调臂外壳的内侧一平面上,另一端与密封圈内 侧平面连接,密封圈的另一端连接四通的一端外侧一平面靠着,四通相对应的另一端与小麦克风导管的一端连接,小麦克风导管的另一端与通过带有声波集中器的小麦克风连接,所述的小麦克风接到金属屏蔽隔离线,再连接到插接器;
音频信号从插接头接入金属屏蔽隔离线再连接到扬声器,所述的扬声器的出音面连接声波集中器,所述声波集中器的小端连接空气导管,所述的空气导管的另一端与四通的B管的一端连接,所述的B管的另一端连接出声腔,所述的出声腔装有盖板,所述的盖板的出声腔部位开有多个小孔,所述的盖板的外周装有软垫,盖板上开有四个或几个长方孔扣到外壳的凸出的倒扣上固定,四通用螺丝固定在盖板内侧;
空气导管和小麦克风导管合并为一体做成面条式扁形的,或做成其它形状的,一端安装在软套里,软套嵌装在外壳的外周边上;
可调臂连接密封圈的一端设置有薄片形的外齿轮,并设置有倒扣,利用倒扣活动安装在外壳内,外齿轮由外壳内的爪子进行跳步定位,将齿轮定位,也就是使可调臂能355°跳步转动并定位,可调臂还起到可滑动的后盖作用;
扬声器和声波集中器一起安装在外壳内,外壳设置有夹子,使用所述的夹子能夹在衣服上,或者不设置夹子,外壳安装空气导管和空气导管另一端的安装处设有软套,所述的外壳另一端安装金属屏蔽隔离线处也设有软套;
听话器外壳上安装有一个夹子,夹子的中心安装弓臂,所述的弓臂是能够360°转动的,它配合可调臂的转动使耳机能够左右耳都可以使用。
如以上所述的降噪防辐射耳机,
其特性在于:
或者将四通接麦克风空气导管转接管与扬声器空气导管的转接管设置为并排的,因麦克风空气导管通过四通的A管与可调臂B接通,而可调臂是需要355°转动的,所以必须置在中心位置便于用密封套中转动又密封,而将扬声器导管的转接管置在偏心的位置,但出声腔仍旧置在中心位置,这也不影响扬声器的声 音的传递,构成了并排的设置;
这样的四通设置能减少听话器的外壳的厚度,使外形做得很薄、形状美观、重量减轻,使用者会感觉轻松舒服;
其余如安装的方式、作用如权利要求6一样,所述的四通一样。
如以上所述的降噪防辐射耳机,
其特性在于:
将听话器外壳上的夹子取消,同时安装耳钩,其余结构与权利要求7所述的结构一样,钩的形状如图49所示;
或者将弓臂取消,在夹子安装上钩子,其余与权利要求6一样。
根据权利要求1所述的降噪防辐射安全耳机,其特征在于,所述的一次话筒外设置有防水且导声的隔水塑料膜,在开关的按钮286-1的周边设置橡胶衬防水,出声腔291-1301的出口,扬声器背面的通机外的出口处既图24消声器的进口。
根据权利要求11所述的降噪防辐射安全耳机,其特征在于:安装所述的扬声器的外壳下端设置有一个小腔,将所述的小麦克风安装在扬声器外壳下端的小腔内。安装扬声器的腔与扬声器外壳下端小腔之间设置隔板封闭的,只是通导管和导线,并用胶水封闭。
这样有效防止扬声器207-2对麦克风204-2的干扰。
附图说明
图1是表示空气导管麦克风的连接和结构图,是没外壳的示意图;
图2是F向视图;
图2-1是M向向视图;
图3是空气导管麦克风带有振膜安装在声波集中器又装在外壳里的示意图;
图4是钢弓和右耳分支空气导管包裹的剖面图;
图5是将钢弓展开后的外形图;
图6是降噪声头戴式单声道双耳安全耳机右耳剖面H1-H1剖面图;
图7是降噪声头戴式安全耳机右耳出声音腔J-J剖面图;
图8是Q2-Q2剖面图,能优选于图12所示的耳机上,能应用最多种耳机上;
图9是Q-Q剖面图;
图10是Q1-Q1剖面图,能应用多种耳机上,图8、图9、图10的剖面或者为2条单独的空气导管,或者用单独空气导管粘合在一起;
图11表示有源信号经放大电路转换为无源信号用空气导管传递的单声道双耳空气导管耳机示意图;
图12表示用振膜空气导管麦克风的在单声道双耳空气导管耳机示意图;
图13是表示I图12放大图;
图14表示单声道双耳空气导管耳机右耳K-K剖面图;
图15表示用五通在听音器里接换的结构示意图;
图16是表示万向臂端部的剖面图;
图17是表示万向臂277-1安装在外壳上部位的形状剖面图,图示是两向平面或者一向平面走位;
图18是万向臂在转换器这一端的安装及扬声器与小麦克风的隔音示意图;
图19是A2-A2的剖面图;
图20是降噪声头戴式单耳防辐射耳机结构的左视示意图;
图21是降噪声头戴式单耳防辐射耳机结构的主视示意图;
图22是降噪声挂耳式的单耳防辐射耳机的结构示意图;
图23是一种双式的薄罩子扬声器背音消声器;
图24是一种设有共振腔并有吸音装置的消声器;
图25是C放大图剖面图;
图26是万向传输臂200-B跳步走位的示意图;
图27是图28的C-C剖视图;
图28是四通的结构示意图;
图29是图28的B-B剖视示意图;
图30为降噪声防辐射耳机结构另一种麦克风安装方式的局部示意图。
具体实施方式
实施例1
如以上所述的降噪防辐射耳机,
其特性在于:本例采用降噪头戴式防辐射耳机,其结构设置有左耳听罩195、左耳外壳195-1、右耳听罩194、右耳外壳194-1、头带185、开关及开关外壳191、降噪传输臂198、降噪转换器196、外壳195-1、扬声器外壳190、插头193;设置有降噪转换系统:将降噪一次话筒,有源音频信号转换为无源音频信号的传输,设置了一次话筒引线连接二级音频放大器电路推动扬声器,电路放大功率和级数及性能根据所选定的振膜空气导管的长度、直径而选定,扬声器207、208的发音口连接声波集中器205、206的大端,声波集中器205、206的小端通过铆钉与振膜空气导管189-1的一端连接,振膜空气导管189-1的另一端和喇叭口音腔的203小端连接,喇叭口音腔203的大端与二次话筒204的受话面连接;从所述的扬声器的发音口通过空气导管至二次话筒受话面的连接均为密封的;二次话筒的另一端引线连接金属屏蔽隔离线193的一端,所述的金属屏蔽隔离线192的另一端连接插头193的一端,插头193的另一端与通信机的插座连接;
转换系统有源部分设有电子线路板并设有电池供给电路和器件的电源,设有与电池连接的充电电路和充电插座,设有电源指示发光管及电源开关,上述的转换系统的有源音频信号的器件全部安装在转换器外壳内,转换系统的扬声器安装在离一次话筒一定距离的话筒中部。
话筒采用了有源转换为无源传输再恢复到有源的传输可将空气导管设置得很长,并且使话筒离发音口很近,以达到降噪声的效果,同时达到了极高的防止通信机对耳朵及大脑的伤害。
左耳空气导管187-1一端接发声音腔209-1的入口另一端接声波集中器205 小端,所述声波集中器205大端连接扬声器207,扬声器207另一端引线连接金属屏蔽导线193;右耳空气导管188-1一端接右耳发声音腔的入口另一端顺着金属弓186的外侧或内侧经过左耳外壳195-1与左耳空气导管187-1平行到扬声器外壳190连接右耳声波集中器206小端,右耳声波集中器206另一端连接右耳扬声器208,右耳扬声器208引线另一端连接金属屏蔽导线193,通过开关191接到另一段金属屏蔽导线192的一端,所述的金属屏蔽导线192的另一端均连接插头193。
三条空气导管平排粘合,外面用柔性材料包裹。
实施例2
本例采用远距离降噪的空气导管麦克风
设置振动膜262安装在声波集中器263的大端,振动膜262的外面加上盖子261,盖子261上设有多个通孔并将振动膜262扣紧在声波集中器263的大端。所述的声波集中器263的小端连接空气导管264的一端,空气导管的另一端连接喇叭口265的小端,所述的喇叭口265的大端连接小麦克风,从小麦克风266的受话面一直到盖子261的周边所有的连接处全部为密封的,声波集中器263和喇叭口265的角度均为120°;
小型麦克风的导线267连接放大口68,放大口的输出端连接金属屏蔽隔离线再通过连接器接通信机;
空气导管264长设为300mm,孔为3mm,本装置能将所有降噪防辐射的麦克风安装到喇叭口265中取代现有技术麦克风置于听话的空气导管长度以外位置的小麦克风266。
实施例3
本例不使用放大器,就是将导线267直接连接金属屏蔽隔离线到通信机,如果小型麦克风的阻抗不匹配就在小型麦克风的输出端通过阻抗变换器269-1接到金属屏蔽隔离线再接到通信机;其余设置与实施例2一样。
实施例4
本实施例采用将盖子261、振动膜262、声波集中器265、空气导管构成的传声筒,该传声筒能用不同尺寸的喇叭口将离嘴很远位置的小麦克风连接到嘴边,达到了降噪的目的和防辐射的效果,其余设置结构与实施例2一样。
实施例5
本例采用一种单声道电路双耳头戴式全空气导管降噪防辐射耳机
从插头290的信号从通信机连接了信号的金属屏蔽隔离线289的音频信号线的接听信号线接到大扬声器284,大扬声器284的另一端连接声波集中器284-1的大端,声波集中器284-1的小端连接复合空气导管283的大管288,大管288的另一端连接三通290的长端并用扎带300扎紧,三通290的另一端接密封圈295,密封圈295的另一端接右耳分支空气导管294,右耳分支空气导管294的另一端连接密封圈292,密封圈292另一端连接弯头291,弯头291的另一端连接音腔291-1,弯头的底面设置了安装板274-1用4只螺丝293固定在右耳壳274内并设有定位销,准确弯头的位置,音腔的出口设多孔的盖板;
三通290的上面设一小通管302,小通管302的一端设有小声波集中口302-1连接三通290,小通管302另一端连接小音腔301,小音腔301上面设有音腔盖板301-1,音腔盖板301-1设有多个穿透的小孔;
该结构设置了活动槽270使弓架273和右耳分支空气导管272能在设定的摆动角活动,密封圈295设在所述的摆动的轴心并用橡胶等柔性材料使弓架273和右耳空气导管272的活动灵活,声波的传送无阻;
小通管302的内径比三通290的内径小得多,具体的尺寸由通向右耳的分支导管的衰波值来计算确定,使两边的耳朵声音音量一致;
三通290的底部设有安装板297,安装板297上设有小孔,用螺丝290-2安装到左耳外壳276的底面上并设定位销,将三通准确安装在左耳外壳276底面上。从大扬声器284出音口一直的右耳音腔的盖板及至左耳音腔的盖板的连接处全 部密封。使声波不会泄漏,使大扬声器284发出的声音全部送到左右耳朵听。
如果音量太小或在大扬声器前端设一个音频放大电路,放大电路安装在大扬声器外壳286-A内,放大电路放大功率的大小根据需要选择;
设置了一个完整的降噪声的受话转换系统:降噪的一次话筒通过了放大口282-A推动扬声器278,扬声器278的出音口连接声波集中器278-B的大端,声波集中器278-B的小端连接小空气导管277-A,小空气导管277-A从降噪万向传输臂277穿到左耳外壳276内,连接到硬连接头275,硬连接头275的另一端插到复合空气导管283的小管289的一端,复合空气导管283的小管289的另一端连接弯曲的硬管275-A穿过隔离板285通小软管接到二次受话器声波集中器275的小端,声波集中器275的大端连接二次受话器275-B的受话面,二次受话器275-B的导线通过开关286的控制接到金属屏蔽隔离线287的受话线,此开关可将受话系统开断,使对方听到或听不到使用者的讲话,再通过连接器290连接通信机,转换器的电池安装在转换器外壳278-A内,转换器外壳278-A上设有指示灯281指示电源开断,指示灯281的透光体是注塑在转换器的外壳278-A上,设有开关279-A控制电源的开断,开关279-A用橡胶垫密封,设有防水的充电插孔282对电池充电,扬声器278与放大电路及一次话筒280三者之间设有插入式隔离板278-C插入槽板278-D,槽板278-D内放置柔性材料密封,扬声器278的接线从隔离板278-C穿过用胶水密封,转换器外壳278-A用螺丝277-A固定在万向臂277上,设置的复合空气导管一管上设有大小两管,外表看起来只有一条,实际有两条通道,既美观又轻便;
外壳286-A内设有隔离板将大扬声器284与二次受话器275-B隔离,以免大扬声器284干扰二次受话器275-B。
实施例6
本例是用五通的代入原来的三通和硬管的结构,进行全结构的使用(如图15),其余结构设置与实施例5一样。
实施例7
实施例6所述的单声道电路双耳头戴式全空气导管降噪防辐射耳机降噪麦克的结构是将有源的音频信号转换为无源的信号又恢复到有源音频信号的装置。
本例降噪的麦克的传导方式与实施例6的不同,其余结构与实施例6的降噪防辐射耳机的结构是一样的。
本例是应用了空气导管麦克风,将万向传输臂277-1的端头安装一个外壳278-C,所述的外壳278-C内安装传声筒262-1,所述的传声筒262-1包括盖子261、振动膜262、声波集中器263、小空气导管264,所述的小空气导管264从降噪万向传输臂277-1穿到左耳外壳276-1内,连接到硬连接头275-1,硬连接头275-1的另一端插到复合空气导管283-1的小管289-1的一端,复合空气导管283-1的小管289-1的另一端连接弯曲的硬管275-C穿过隔离板285-1通小软管接到小麦克风275-D的小喇叭口271-1的小端,小喇叭口271-1的大端连接小麦克风275-D的受话面,小麦克风271-1的导线通过开关286-1的控制接到金属屏蔽隔离线287-1的受话线,此开关能将受话系统开通或断开,使对方听到或听不到使用者的讲话,再通过连接器290-1连接通信机,这样即是无源的音频信号直接到小麦克风产生有源的信号,无需转换,上述的盖子261靠着的外壳278-C面开有多个小透孔,上述的各连接处的周边均为密封的电路较为简单成本也较低;
外壳278-C内设有隔离板285-1将大扬声器284-1与小麦克风275-D隔离,导线从隔离板285-1穿过用胶水密封,以免大扬声器284-1干扰小麦克风器275-D。
如果小麦克风的输出信号功率不够,在小麦克风的输出端设一个音频放大电路,放大小麦克风的输出音频信号,此放大电路和大扬声器的放大电路共用电源,这种结构的优点就是所用的电源都远离大脑和耳朵了,能绝对达到防辐射效果。
实施例8
将如图25所示的盖子304、304-1安装到声波集中器284-1覆盖了扬声器284的背面,使扬声器背面的声音减少,以免影响别人。
实施例9
本例设置另一种耳机的扬声器背面发出的声音的消声结构:即设置一个有共振腔306的消声器,共振腔306内通上几条管子,管子上开有穿透共振腔密布的小孔307,前面两条管子合并为一个管头后接在一个扬声器背后一个罩子的出音口,也就是接到声波集中器大端的周边一个罩子的出口上,这个出口还装有一层薄膜对扬声器防水,后面两条管的后端汇集在一条接有吸音材料的管子,最终成为气体流出消声器,几条管子内的声音就从小孔307向共振腔306送出,就在共振腔306内产生共振,即声音互相抵消声音,而达到了消声的目的,这样便只有戴耳机的人才能听到耳机内声音,从而不会影响到别人。
实施例10
本例采用降噪声头戴式单耳防辐射耳机设置有弹性的弓夹199-1安装在外壳200-C,在弓夹的端头安装长形的夹片202-1,夹片内侧嵌有柔软的海绵;
装振膜的集音器196-2的外壳连接万向传输臂198-2,集音器196-2的声波集中器连接万向传输臂198-2中的空气导管的一端,所述万向传输臂198-2里的空气导管的另一端连接可调臂200-B,所述的可调臂200-B另一端插入连接到密封圈295-A的一端,所述的密封圈295-A的另一端连接四通290-A的A管的一端,所述的四通290-A的A管的另一端连接麦克风导管203-1的一端,密封圈295-A外面设有弹簧295-B,弹簧295-B一端紧靠在可调臂200-C外壳的内侧一平面上,另一端与密封圈295-A内侧平面连接,密封圈295-A的另一端连接四通209-A的一端外侧一平面靠着,四通209-A相对应的另一端与麦克风导管203-1的一端连接,麦克风导管203-1的另一端与通过带有声波集中器的麦克风204-2连接,所述的麦克风204-2接到金属屏蔽隔离线,再连接到插接器206-1;
音频信号从插接头206-1接入金属屏蔽隔离线205-1再连接到扬声器207-2,所述的扬声器207-2的出音面连接声波集中器205-2,所述声波集中器205-2的小端连接空气导管202-1,所述的空气导管202-1的另一端与四通290-B的B管的一端连接,所述的B管的另一端连接出声腔301-2,所述的出声腔301-2装有盖板301-C,所述的盖板301-C的出声腔301-B部位开有多个小孔,所述的盖板301-C的外周装有软垫202-C,盖板301-C上开有四个长方孔扣到外壳200-C的凸出的倒扣上固定,四通209-A用螺丝固定在盖板301-C内侧;
空气导管202-1和麦克风导管203-1合并为一体做成面条式扁形的,一端安装在软套276-C里,软套276-C嵌装在外壳200-C的外周边上;
可调臂200-B连接密封圈295-A的一端设置有薄片形的外齿轮200-3,并设置有倒扣,利用倒扣活动安装在外壳200-C内,外齿轮200-3由外壳内的爪子200-4进行跳步定位,将齿轮200-3定位,也就是使可调臂200-B能355°跳步转动并定位,可调臂200-B还起到可滑动的后盖作用;
扬声器207-2和声波集中器205-2一起安装在外壳204-A内,外壳204-A设置有夹子200-D,使用所述的夹子200-D能夹在衣服上,外壳204-A安装空气导管203-1和空气导管202-1另一端的安装处设有软套276-D,所述的外壳204-A另一端安装金属屏蔽隔离线处也设有软套276-E;
听话器外壳204-A上安装有一个夹子200-D,夹子200-D的中心安装弓臂199-2,所述的弓臂199-2是能够360°转动的,它配合可调臂200-B的转动使耳机能够左右耳都可以使用。
实施例11
本例将设置的图27、图28、图29的四通结构取代图25中四通209A的结构并将外壳200-C和盖板301-C及可调臂后盖等零件的尺寸设置为与代入后的四通的尺寸相匹配。
实施例12
将听话器外壳204-A上的夹子200-D取消,同时安装耳钩211-1,其余结构与实施例11所述的结构一样,钩的形状如图49所示。
实施例13
本例是将弓臂199-2取消,在夹子200-E安装上钩子211-1,其余与实施例11一样。
本发明还包括,对空气导管扬声器设置主动降噪功能,在听觉的环境中扬声器外壳上受音面向外设置了一个微型麦克风采集环境中的噪声,同时将采集到的噪声接送到降噪电路,降噪电路采用LM1894或LM832芯片或另外设计相应降噪电路来进行运算处理后,通过空气导管扬声器发出与噪声相位相反,振幅相同的声波来抵消噪声,最后耳朵就会感觉到噪声减弱或消失。或者用空气导管麦克风来采集耳朵边上的噪声接送到降噪电路,降噪电路采用LM1894或LM832芯片或另外设计相应降噪电路来进行运算处理后,通过空气导管扬声器发出与噪声相位相反,振幅相同的声波来抵消噪声,效果更好,所述的空气导管麦克风中的小麦克风,设置扬声器外壳下面的小腔图30,204-2内。前面已述采用空气导管麦克风的振膜离嘴巴很近,已达到了主动降噪,和听筒边的软性材料被动降噪,再加上本技术要求对电子主动降噪,三者合一能达到理想效果。
如图30所示,本实施例小麦克风204-2的安装方式与图21的区别在于:装所述的扬声器的外壳下端设置有一个小腔,将所述的小麦克风204-2安装扬声器外壳下端的小腔内。
应当指出的是:以上实施例仅用来对本发明作进一步详细的描述,不是对本发明的权利要求进行限定的,在不脱离本发明的精神和构思的情况下,本领域普通技术人员可以对本发明进行各种改进或变化,仍然属于本发明的保护范围之内。

Claims (12)

  1. 一种降噪防辐射安全耳机,其特征在于,包括:
    耳机头,所述的耳机头的内部形成有音腔体,所述音腔体的第一端具有出音口;
    主体,所述主体的内部设有耳机声波集中器,所述耳机声波集中器上开设有通道口,所述通道口与所述音腔体的第二端通过耳机空气导管连通;
    扬声器,所述耳机声波集中器设置在所述扬声器和所述耳机空气导管之间;
    所述扬声器与位于主体外的导线的第一端连接,所述导线的第二端连接有插头;扬声器的背面设消声器。
    以及降噪空气导管麦克风,具有阻抗匹配功能的降噪空气导管麦克风,
    包括振膜声波集中器,所述振膜声波集中器大端处设有振动膜,振动膜用于捕捉外界声波信号并将外界声波信号进行放大处理,然后以声波信号输出给振膜声波集中器的小端,所述振膜声波集中器的小端连接振膜空气导管,振膜空气导管的另一端连接放大口小端,放大口的大端安装麦克风将空气导管的声波信号并将其转换为音频电信号;
    所述的金属屏蔽隔离线前端设置有用于匹配所述小麦克风和语音终端机或通信机之间阻抗匹配的阻抗变换器。
    降噪空气导管麦克风应用到降噪头戴式防辐射耳机,其特性中包括,有三通或五通作空气导管的连接。
  2. 根据权利要求1所述的一种降噪防辐射安全耳机,其特征在于:所述的麦克风的输出端连接有信号放大器,该信号放大器设置于所述的金属屏蔽隔离线的前端。
  3. 根据权利要求1所述的一种降噪防辐射安全耳机,其特征在于:所述振动膜安装在声波集中器的大端,振动膜的外面加上盖子,盖子上设有多个通孔并将振动膜扣紧在振膜声波集中器的大端,所述的振膜声波集中器的小端连接振膜空气导管的一端,振膜空气导管的另一端连接另一个喇叭口的小端,所述的喇叭口的大端连接所述小麦克风,从所述麦克风的受话面一直到盖子的周边所有的连接处全部为密封的,所述小麦克风外露在声波集中器之外处的表面加套密封,声波集 中器和喇叭口的角度均为90°到160°。
  4. 根据权利要求1所述的一种降噪防辐射安全耳机,其特性在于,将阻抗变换器前面加放大器。
  5. 根据权利要求3所述的降噪防辐射安全耳机,其特征在于:所述的振动膜安装在带弯管的振膜声波集中器上,振膜声波集中器是用倒扣扣到上盖内,后盖也用倒扣扣到上盖,带弯管的振膜声波集中器的管腔插入万向传输臂内是振膜空气导管的,振膜空气导管通过转接接到要选用的各种小麦克风。
  6. 根据权利要求1所述的一种降噪防辐射安全耳机,其特征在于:所述降噪防辐射安全耳机为单声道电路双耳头戴式,设置有左耳听罩、左耳外壳、音腔罩、右耳听罩、右耳外壳、头带、开关及开关外壳、降噪万向传输臂、降噪转换器、外壳、扬声器外壳、插头;
    还包括有复合空气导管,复合空气导管内设有用于与扬声器管道连接的大管、以及用于与麦克风空气导管连接的小管,耳机空气导管包括有连接左耳听罩音腔体的右耳分支空气导管、以及连接右耳听罩音腔体的右耳分支空气导管,该右耳分支空气导管、右耳分支空气导管和复合空气导管的大管通过三通连接;
    振膜空气导管从降噪万向传输臂穿到左耳外壳内,连接到硬连接头;硬连接头的另一端插到复合空气导管的小管的一端,复合空气导管的小管的另一端连接弯曲的硬管穿过隔离板通小软管接到振膜声波集中器的小端,
    将弯曲的硬管直接与三通合并为一体成为五通,合并上的弯管一端与原来连接方式一样,弯管的另一端与密封圈一端连接,密封圈的另一端与万向传输臂中的空气导管连接,万向传输臂的另一端的空气导管与声波放大器的小端连接,声波集中器的大端安装振膜连接。
  7. 根据权利要求6所述的一种降噪防辐射安全耳机,其特征在于:所述的复合空气导管的大管和小管之间设置有用于大管和小管之间声音隔离的空气隔离腔,或者所述的大管和小管之间通过片状连接板连接。
  8. 根据权利要求7所述的降噪防辐射安全耳机,其特征在于,耳机的扬声器背面发出的声音的消声结构,用厚度较薄相适应扬声器功率的罩子分两层腔罩在扬 声器的背面,两层腔均有一定的体积,罩的厚度根据扬声器的大小而选定,用螺丝固定安装在声波集中器的周边上,或用胶水粘到声波集中器的周边;
    或者设置一个有共振腔的消声器,共振腔内通上几条管子,管子上开有穿透共振腔密布的小孔,前面两条管子合并为一个管头后接在一个扬声器背后一个罩子的出音口,也就是接到声波集中器大端的周边一个罩子的出口上,这个出口还装有一层薄膜对扬声器防水,后面两条管的后一端汇集在一条接有吸音材料的管子,最终成为气体流出消声器,几条管子内的声音就从小孔向共振腔送出,就在共振腔内产生共振,即声音互相抵消声音,而达到了消声的目的。
  9. 根据权利要求1所述的降噪防辐射安全耳机,其特征在于,所述的一次话筒外设置有防水且导声的隔水塑料膜,在开关的按钮的周边设置橡胶衬防水,出声腔的出口,扬声器背面的通机外的出口处既消声器的进口。
  10. 根据权利要求1所述的降噪防辐射安全耳机,其特征在于:对空气导管扬声器设置主动降噪功能,在听觉的环境中扬声器壳上受音面向外设置了一个微型麦克风采集环境中的噪声,同时将采集到的噪声接送到降噪电路,降噪电路采用LM1894或LM832芯片或另外设计相应降噪电路来进行运算处理后,通过空气导管扬声器发出与噪声相位相反,振幅相同的声波来抵消噪声,或者用空气导管麦克风来采集耳朵边上的噪声接送到降噪电路,降噪电路采用LM1894或LM832芯片或另外设计相应降噪电路来进行运算处理后,通过空气导管扬声器发出与噪声相位相反,振幅相同的声波来抵消噪声,所述的空气导管麦克风中的小麦克风,设置扬声器外壳下面的小腔内。
  11. 根据权利要求1所述的降噪防辐射安全耳机,其特征在于:
    该耳机为降噪声头戴式单耳防辐射耳机,装振动膜的集音器的外壳连接万向 传输臂,集音器的声波集中器连接万向传输臂中的空气导管的一端,所述万向传输臂里的空气导管的另一端连接可调臂,所述的可调臂另一端连接到密封圈的一端,所述的密封圈的另一端连接四通A管的一端,所述的四通A管的另一端连接小麦克风导管的一端,密封圈外面设有弹簧,弹簧一端紧靠在306°可调臂外壳的内侧一平面上,另一端与密封圈内侧平面连接,密封圈的另一端连接四通的一端外侧一平面靠着,四通相对应的另一端与小麦克风导管的一端连接,小麦克风导管的另一端与同坐带有声波集中器的小麦克风连接,所述的小麦克风接到金属屏蔽隔离线,再连接到插接器;
    音频信号从插接头接入金属屏蔽隔离线再连接到扬声器,所述的扬声器的出音面连接声波集中器,所述声波集中器的小端连接空气导管,所述的空气导管的另一端与四通B管的一端连接,所述的B管的另一端连接出声腔,所述的出声腔装有盖板,所述的盖板的出声腔部位开有多个小孔,所述的盖板的外周装有软垫,盖板上开有四个或几个长方孔扣到外壳的凸出的倒扣上固定,四通用螺丝固定在盖板内侧;
    空气导管和小麦克风导管合并为一体做成面条式扁形的,或做成其它形状的,一端安装在软套里,软套嵌装在外壳的外周边上;
    可调臂连接密封圈的一端设置有薄片形的外齿轮,并设置有倒扣,利用倒扣活动安装在外壳内,外齿轮由外壳内的爪子进行跳步定位,将齿轮定位,也就是使可调臂能355°跳步转动并定位,可调臂还起到可滑动的后盖作用;
    扬声器和声波集中器一起安装在外壳内。
  12. 根据权利要求11所述的降噪防辐射安全耳机,其特征在于:安装所述的扬声器的外壳下端设置有一个小腔,将所述的小麦克风安装在扬声器外壳下端的小腔内。安装扬声器的腔与扬声器外壳下端小腔之间设置隔板封闭的,只是通导管和导线,并用胶水封闭。
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