CN87207004U - Automatic sound insulation-adjusting earplug - Google Patents
Automatic sound insulation-adjusting earplug Download PDFInfo
- Publication number
- CN87207004U CN87207004U CN198787207004U CN87207004U CN87207004U CN 87207004 U CN87207004 U CN 87207004U CN 198787207004 U CN198787207004 U CN 198787207004U CN 87207004 U CN87207004 U CN 87207004U CN 87207004 U CN87207004 U CN 87207004U
- Authority
- CN
- China
- Prior art keywords
- sound
- acoustic
- earplug
- sound insulation
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F11/00—Methods or devices for treatment of the ears or hearing sense; Non-electric hearing aids; Methods or devices for enabling ear patients to achieve auditory perception through physiological senses other than hearing sense; Protective devices for the ears, carried on the body or in the hand
- A61F11/06—Protective devices for the ears
- A61F11/08—Protective devices for the ears internal, e.g. earplugs
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F11/00—Methods or devices for treatment of the ears or hearing sense; Non-electric hearing aids; Methods or devices for enabling ear patients to achieve auditory perception through physiological senses other than hearing sense; Protective devices for the ears, carried on the body or in the hand
- A61F11/06—Protective devices for the ears
- A61F11/08—Protective devices for the ears internal, e.g. earplugs
- A61F11/085—Protective devices for the ears internal, e.g. earplugs including an inner channel
Abstract
Disclosed is an automatic sound insulation-adjusting earplug suitable for the protection of the ear in heavy noisy circumstance. The utility model adopts a flexible thin film with acoustic permeability as the acoustic valve. The acoustic valve has dual function of acoustic permeability and sound insulation in the process of sound transmitting. Besides, the acoustic valve, together with a vocal cavity (3) and an acoustic channel (4), forms a sound insulating system having non-linear characteristics capable of automatically controlling the sound transmission loss. The sound insulating system can effectively isolate the noise in high burst noisy circumstance, and simultaneously, the voices and other useful audio signals can still be sharply received.
Description
This utility model belongs to a kind of earplug that is used for the protection of people's ear in strong noise environment.
This class technique known is to make earplug, earmuff with soft sound insulation or sound-absorbing material, and to exclude the very noisy in the environment, this class earplug can not be regulated oise insulation factor usually, when having isolated very noisy automatically, has also isolated useful voice signal.Therefore, earplug that has or earmuff adopt valve, and spring or diaphragm are regulated oise insulation factor.United States Patent (USP) 3730181 has proposed two kinds of sound insulating methods that adopt flexible sheet in earplug.A kind of method is, open the sound transmission aperture of limit, hole bag embedding quality loop in diaphragm central authorities, under low sound level situation, sound is by sound transmission aperture, and is transaudient along zigzag transaudient passage, when the noise acoustic pressure surpasses the design threshold values, diaphragm is pushed to dividing plate by strong acoustic pressure, make quality loop and dividing plate be adjacent to, transaudient passage is interdicted, thereby reaches the sound insulation purpose.Another kind method is, at the quality briquetting of area of diaphragm central authorities bag embedding greater than transaudient port, have transaudient aperture on the briquetting side, under low sound level situation, sound is by the transaudient aperture on the diaphragm, and is transaudient along zigzag transaudient passage, when the noise acoustic pressure surpasses the design threshold values, diaphragm is pushed to passway by strong acoustic pressure, quality briquetting sealing sound passway, thus reach the sound insulation purpose.But this class invention exists serious inertia lag phenomenon, and under strong burst noise effect, the sound valve is difficult to rapid closing, and burst noise is difficult to timely unlatching again after finishing.
Task of the present utility model is a kind of sound system that the nonlinear acoustics valve is arranged of design, utilizes this earplug that manufactures and designs can regulate the size of oise insulation factor along with the power of noise sound level automatically.In strong burst noise environment, the sound valve is closed rapidly, makes earplug have enough oise insulation factors, and after burst noise disappeared, the sound valve was opened immediately, can allow voice pass through.Therefore, in burst noise environment intermittently, can guarantee that still people normally talk.In addition, earplug also has the Frequency Response of the logical frequency-selecting of band, in the noise frequency range, has high oise insulation factor, oise insulation factor in voice band is hanged down to guarantee that voice signal passes through, and also keeps some formants at high-frequency range, enables to receive useful sound signal.
This utility model is with vibration film 2, the operatic tunes 3, sound passage 4 one of composition are transaudient, sound partiting system, the material of change vibration film 2, shape, the size of thickness, the operatic tunes 3 harmony passages 4, change the distance of 4 in vibration film 2 and sound passage, can change the transaudient of this stereomicrophone system, sound insulation characteristics, resonant frequency is to be applicable to different occasions.
This utility model selects for use flexibility, lightweight thin film as the sound valve material, its light weight, and inertia is little, and sound wave is had good transient response characteristic, and with the arrival and the disappearance of strong burst noise, the sound valve can close rapidly and open, and does not have tangible hysteresis.
A kind of embodiment that can regulate the earplug of oise insulation factor automatically that accompanying drawing designs for this utility model.Its basic acoustic element is vibration film 2, the operatic tunes 3, sound passage 4.Other main accessories is catch net 1, flexible cellular plastic plug 5, shell 6.
Vibration film 2 adopts flexibility, light-weight thin film to make, and uses adhesives in the operatic tunes 3, as the sound valve.Under low sound intensity condition, sound sees through vibration film 2 and directly imports passage 4 into.Sound transmission attenuation is little.When the sound intensity became big, vibration film 2 was out of shape tensioning greatly because of extraneous acoustic pressure becomes, and makes by vibration film 2 and cavity 3, and the stereomicrophone system that sound passage 4 is formed has nonlinear sound insulation effect on sound transmission characteristics, and oise insulation factor raises along with extraneous acoustic pressure and becomes big.After extraneous acoustic pressure surpassed the design threshold values, strong acoustic pressure was pushed vibration film 2 to passage and is close to passway and makes the entrant sound area become the area of passway, and sound transmission attenuation increases substantially, thereby reaches the purpose of automatic control oise insulation factor.In entire work process, 2 entrant sounds of vibration film and sound insulation dual function.
Sound passage 4 is positioned at catch net 1 one ends an operatic tunes 3, and the operatic tunes 3 adopts " I " font structure.The transaudient road weak point that sees through thin film under low sound intensity condition is and straight, and sound directly imports passage 4 into, and under the high sound intensity condition, when vibration film distortion sealing sound passway, the cavity at operatic tunes two ends then can bear the amount of exceeding acoustic pressure, plays cushioning effect.
Claims (2)
1, a kind of earplug of automatic adjusting oise insulation factor; comprise catch net 1, diaphragm 2, sound passage 4; flexible cellular plastic plug 5; shell 6 is characterized in that passage 4 is positioned at catch net 1 one ends an operatic tunes 3 is arranged, and described diaphragm is a vibration film 2; vibration film 2 adopts flexible; light-weight thin film is made, and is bonded in the operatic tunes 3 with binding agent, as the sound valve.
2, earplug according to claim 1 is characterized in that the operatic tunes 3 adopts " I " font structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN198787207004U CN87207004U (en) | 1987-04-29 | 1987-04-29 | Automatic sound insulation-adjusting earplug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN198787207004U CN87207004U (en) | 1987-04-29 | 1987-04-29 | Automatic sound insulation-adjusting earplug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87207004U true CN87207004U (en) | 1988-03-09 |
Family
ID=4822492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN198787207004U Withdrawn CN87207004U (en) | 1987-04-29 | 1987-04-29 | Automatic sound insulation-adjusting earplug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87207004U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1897896B (en) * | 2003-10-30 | 2010-05-12 | 荷兰应用科学研究会(Tno) | Earplug |
| CN101242676B (en) * | 2007-02-06 | 2011-10-05 | 斯博瑞安听力防护有限责任公司 | Method for manufacturing earbud |
| CN104602143A (en) * | 2015-02-05 | 2015-05-06 | 深圳市创世达实业有限公司 | Howlround-preventing device and microphone using same |
| CN107049602A (en) * | 2017-05-24 | 2017-08-18 | 孟祥力 | One kind filters earplug of making an uproar |
| CN110353882A (en) * | 2018-04-10 | 2019-10-22 | 任阿毛 | Intelligent ear body gap closing method |
-
1987
- 1987-04-29 CN CN198787207004U patent/CN87207004U/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1897896B (en) * | 2003-10-30 | 2010-05-12 | 荷兰应用科学研究会(Tno) | Earplug |
| CN101242676B (en) * | 2007-02-06 | 2011-10-05 | 斯博瑞安听力防护有限责任公司 | Method for manufacturing earbud |
| CN104602143A (en) * | 2015-02-05 | 2015-05-06 | 深圳市创世达实业有限公司 | Howlround-preventing device and microphone using same |
| CN107049602A (en) * | 2017-05-24 | 2017-08-18 | 孟祥力 | One kind filters earplug of making an uproar |
| CN110353882A (en) * | 2018-04-10 | 2019-10-22 | 任阿毛 | Intelligent ear body gap closing method |
| CN110353882B (en) * | 2018-04-10 | 2021-04-30 | 青岛大学附属医院 | Intelligent ear gap closing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |