CN2249070Y - Noise-reducing earplug - Google Patents
Noise-reducing earplug Download PDFInfo
- Publication number
- CN2249070Y CN2249070Y CN95244562U CN95244562U CN2249070Y CN 2249070 Y CN2249070 Y CN 2249070Y CN 95244562 U CN95244562 U CN 95244562U CN 95244562 U CN95244562 U CN 95244562U CN 2249070 Y CN2249070 Y CN 2249070Y
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- CN
- China
- Prior art keywords
- earplug
- utility
- model
- noise
- size
- 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.)
- Expired - Fee Related
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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
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Acoustics & Sound (AREA)
- Biophysics (AREA)
- Otolaryngology (AREA)
- Psychology (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The utility model mainly relates to a pair of noise-reducing earplugs. Each earplug is in a cylindrical shape, the diameter of each earplug is 0.8-1.5 cm, the length of each earplug is 1-2.5 cm, and the inner part of each earplug is provided with a compressible micropore structure. The utility model is characterized in that the rebound time is long, the utility model can be compressed to the size which is smaller than the size of each auditory canal, the utility model can be inserted into the auditory canals comfortably, the utility model rebounds slowly and expends fully for blocking the auditory canals, and thus the noise reducing effect is good.
Description
This utility model belongs to a kind of ear protection device, and it is suitable for inserting and reduces noise in the auditory meatus.
People have known in many insertion ears that the most easy is to go into auditory meatus with cotton plug to reduce the device of noise, but because the hole of connection is arranged, thereby defening effect is bad; Natural rubber also can be made the earplug of definite shape and size after mold pressing, its shortcoming is because the shape of auditory meatus varies with each individual, and produces therefore that the mold pressing elastic ear plug of common-use size and shape is arranged is impossible; People often use earphone in recent years, but because its not plasticity, can not be with people's auditory meatus jam-pack, and the foam rubber resilience force of earplug head is very big, people's ear is not felt well.
The purpose of this utility model provides a kind of noise reduction sound earplug that uses comfortable, excellent noise reduction effect, can close auditory meatus effectively.
Earplug provided by the utility model is shaped as cylindrical, 0.8～1.5 centimetre of diameter, slightly larger in diameter than people's auditory meatus, long 1～2.5 centimetre, earplug is to be made by the foam plastics that has certain restoring force and counterpressure characteristic, inside is compressible microcellular structure, can slowly restore to the original state after the compression.Contract earplug to less than the size of auditory meatus with hand during use, fill in auditory meatus after, earplug is replied at leisure, earplug makes noise be difficult to enter ear by earplug, thereby reaches good noise reduction the slight pressure in auditory meatus surface.
This utility model is worn the sense that Shi Rener does not have discomfort, and can close auditory meatus effectively, thereby its noise reduction is obvious, and is particularly because it has adopted suitable hole-closing structure, very effective to weakening 20～2000 hertz sonic propagation.
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is with a soft sketch map of moulding the secondary noise reduction sound earplug that line couples together.
Below in conjunction with embodiment this utility model is further described.
Embodiment: the material of noise reduction sound earplug adopts the thermoplastic soft foam plastics, it is the homopolymer or the copolymer of vinyl chloride, they contain the vinyl chloride of 85% weight ratio at least and are no more than other monomer of 15%: as 1,1-dichloroethylene, vinyl acetate, acrylic acid methyl ester. etc., the esters of also available butadiene, fumaric acid and other monomer.These are the polymer of base material with vinyl chloride, and organic plasticizer of available foaming agent and suitable high concentration is sneaked in the plastisol, and available plasticizer has octyl phthalate and polyester plasticizer etc.In addition, also to add stabilizing agent and other auxiliary agent is made pastel.Concrete prescription is as follows:
1.EPVC-440---100 parts of a kind of common vinyl chloride-base polymers
2. dioctyl phthalate is 70 parts
3. polymeric plasticizer is 40 parts
4. liquid zinc-cadmium-barium stabilizing agent is 3 parts
5. antimony oxide is 5 parts
6. Celogen Az is 7 parts
7. dibutyl tin laurate is 2 parts
8. precipitated calcium carbonate is 2 parts
The pastel that above all raw materials are formed is cast on the template, scrapes to 1.5 millimeters thickness with scraper, stops in the drying baker below 200C 6～8 minutes then, and the resilience time of consequent foam plastics was approximately about 10 seconds, and density is 0.13g/CM
3This foam plastics is a microcellular structure, observes for scalable 75 times.Then this material is washed into diameter and is 1.2 centimetres, high 1.2 centimetres cylindric, the noise reduction sound stopper (1) of microcellular structure (2) is arranged in promptly becoming.This utility model is filled in the auditory meatus after can be easily being compressed into slice with finger, and compressed then earplug slowly springs back to fully cosily tight ear plug road, and this earplug is very effective to weakening 20～2000 hertz sonic propagation.After tested, be more than 100 decibels the time at outside noise, this earplug can reduce by 30 decibels of noises, and people's normal sound is only reduced by 10 decibels.
For ease of wearing, can two earplugs (1) be coupled together with a soft line (3) of moulding as Fig. 2, make a secondary noise reduction sound earplug.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95244562U CN2249070Y (en) | 1995-08-17 | 1995-08-17 | Noise-reducing earplug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95244562U CN2249070Y (en) | 1995-08-17 | 1995-08-17 | Noise-reducing earplug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2249070Y true CN2249070Y (en) | 1997-03-12 |
Family
ID=33884922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95244562U Expired - Fee Related CN2249070Y (en) | 1995-08-17 | 1995-08-17 | Noise-reducing earplug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2249070Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100553595C (en) * | 2006-03-03 | 2009-10-28 | 霍华德莱特实业有限责任公司 | The earplug of band catch |
| US8054985B2 (en) | 2003-11-03 | 2011-11-08 | 3M Innovative Properties Company | Low sound attenuating hearing protection device with filter arrangement |
| CN104997589A (en) * | 2015-07-30 | 2015-10-28 | 南京纳世新材料有限责任公司 | Aerogel anti-noise earplug |
| CN112674938A (en) * | 2020-10-23 | 2021-04-20 | 北京工业大学 | Noise reduction earplug based on dot matrix structure |
-
1995
- 1995-08-17 CN CN95244562U patent/CN2249070Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8054985B2 (en) | 2003-11-03 | 2011-11-08 | 3M Innovative Properties Company | Low sound attenuating hearing protection device with filter arrangement |
| CN100553595C (en) * | 2006-03-03 | 2009-10-28 | 霍华德莱特实业有限责任公司 | The earplug of band catch |
| CN104997589A (en) * | 2015-07-30 | 2015-10-28 | 南京纳世新材料有限责任公司 | Aerogel anti-noise earplug |
| CN112674938A (en) * | 2020-10-23 | 2021-04-20 | 北京工业大学 | Noise reduction earplug based on dot matrix structure |
| CN112674938B (en) * | 2020-10-23 | 2022-09-09 | 北京工业大学 | A kind of noise reduction earplug based on lattice structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |