CN110419796A - A kind of mill hand's Cover for mouth and ears integral type safety device - Google Patents
A kind of mill hand's Cover for mouth and ears integral type safety device Download PDFInfo
- Publication number
- CN110419796A CN110419796A CN201910840018.5A CN201910840018A CN110419796A CN 110419796 A CN110419796 A CN 110419796A CN 201910840018 A CN201910840018 A CN 201910840018A CN 110419796 A CN110419796 A CN 110419796A
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- China
- Prior art keywords
- mask
- cover
- filterability
- mouth
- mounting cup
- Prior art date
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Classifications
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
- A41D13/05—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
- A41D13/11—Protective face masks, e.g. for surgical use, or for use in foul atmospheres
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- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
A kind of mill hand's Cover for mouth and ears integral type safety device, belongs to safety device technical field.Including filterability mask, earmuff and the elastic band for connecting filterability mask and earmuff, the elastic band is set to the two sides of filterability mask, feature is: the filterability mask is the electric dust-proof mask of actively air-supply, electromagnetic sound electrotransformation device is set inside the earmuff, the conducting wire of connection filterability mask and electromagnetic sound electrotransformation device is provided in the elastic band, the electromagnetic sound electrotransformation device converts electric energy for the noise in factory and electric energy is supplied filterability mask by conducting wire, so that filterability mask be driven to work.Advantage: mask and earmuff are integrated, and integrate aesthetics and functional, easy to wear, effective guarantee worker's health.
Description
Technical field
The invention belongs to safety device technical fields, and in particular to a kind of mill hand's Cover for mouth and ears integral type protection use
Tool.
Background technique
Recognize through our on-site inspections, the vegetable dusts operation such as mill hand's Long Term Contact cotton, flax, cotton dirt
And its long-term exposure of endotoxin can generate chronic change to cotton mill's Pulmonary Function in Exposed Workers, there is the risk for suffering from byssinosis, lung cancer.
Aiming at the problem that cotton dirt in factory is wadded a quilt with cotton, factory can give worker's distribution some cotton yarn lint face masks, but the filterability of cotton yarn lint face mask
It is less than 30%, dust-proof effect is unsatisfactory, can only obstruct the biggish cotton dirt of particle, and easily make one to generate sense of feeling oppressed.Now
Mask type on the market is mostly filter-type respirator, to the filtration mechanism of particulate matter based on mechanical filter, shows as intercepting resistance
It stays, the comprehensive function of inertial collision and diffusion effect, it is specific to be divided into active carbon mask again, air filtering type mask, actively send
Electric dust-proof mask of wind etc..
Meanwhile the most of textile machinery of textile mills all has the mechanism periodically hit, they at runtime, can be due to
Inertia force, frictional force and service load and cause vibration and low-frequency noise, noise intensity reached 85~10dB (A), the noise
Hearing and cardiovascular system to textile worker will cause damage, have the risk for causing noise deafness.
It include now wearing two kinds of forms of earplug and earmuff to worker for the safeguard measure of factory noise.Wherein, earplug
It is made mostly using silica gel, a part of noise can be resisted, but harder, worn apparent distending pain sense.And earmuff form compared with
It is more, it can substantially be divided into two types, one is active noise reduction type earmuff, another kind is passive noise reducing type earmuff.Described in the former
Earmuff is provided with circuit chip in ear cup, issues a kind of sound opposite with noise when receiving noise by electronic technology
Wave reduces noise cancellation, to protect the hearing of wearer.Earmuff described in the latter then reduces wearing by sound isolation
The noise nuisance of person, main body are made of components such as ear pad, damping washer, sound-absorbing sponge (E-A-M foam), earmuff shells.Mesh
Before until, not yet discovery can synthesis dust prevention, noise reduction, comfortable Cover for mouth and ears integral type safety device, so being badly in need of a kind of solution party
Case is able to achieve and improves the upgrading of the mask and earmuff of existing mill hand, with effective guarantee worker's health.
Summary of the invention
The task of the present invention is to provide a kind of mill hand's Cover for mouth and ears integral type safety device, by mask and ear
Cover integrates, and integrates aesthetics and functional, easy to wear, effective guarantee worker's health.
The task of the present invention is in this way to complete, a kind of mill hand's Cover for mouth and ears integral type safety device, including
Filterability mask, earmuff and the elastic band for connecting filterability mask and earmuff, the elastic band are set to filterability mouth
The two sides of cover, it is characterised in that: the filterability mask is the electric dust-proof mask of actively air-supply, is set inside the earmuff
Electromagnetic sound electrotransformation device is set, the conducting wire of connection filterability mask and electromagnetic sound electrotransformation device, institute are provided in the elastic band
The electromagnetic sound electrotransformation device stated converts electric energy for the noise in factory and electric energy is supplied filterability mask by conducting wire, thus
Drive the work of filterability mask.
In a specific embodiment of the invention, the filterability mask include cover, mounting cup, blower, in
Shell, outer layer filter core, outer layer filter cover, the cover correspond to user face mouthful under the action of after mask is dressed in elastic band
Nose position, the mounting cup are installed on cover, and the mounting cup is equipped with air inlet, and the bottom of the mounting cup opens up
There is gas outlet, blower is installed on the outside of the position of its air inlet of the correspondence of the mounting cup, air is blasted peace by the blower
In dress cover, middle shell is installed on the outside of the blower, is corresponded on the middle shell and outer layer filter is installed on the outside of blower position
Core is equipped with the outer layer filter cover for covering outer layer filter core on the outside of the middle shell.
In another specific embodiment of the invention, on the mounting cup and the air inlet position of corresponding mounting cup
Place is equipped with internal layer filter core, and the gas that the internal layer filter core blasts blower is filtered.
In another specific embodiment of the invention, in the bottom of the mounting cup and the gas outlet of corresponding mounting cup
Exhaust valve is installed, the exhaust valve is closed in air-breathing, is opened when exhaling at position.
In another specific embodiment of the invention, the blower includes Fan casing, fan cover and fan, described
Fan casing on the inside of be installed on the position that its gas outlet is corresponded on mounting cup, fan cover is installed in the outside of the Fan casing,
The inside of the Fan casing and fan cover installs fan and is passed through the conducting wire for driving fan rotation from elastic band, described
Fan casing and the inside of fan cover be additionally provided with the gas passage blasted gas in mounting cup.
Of the invention there are one in specific embodiment, correspond on the outside of at fan cover position and set on the middle shell
There is circular groove, outer layer filter core is installed in the circular groove.
In a specific embodiment in turn of the invention, the electromagnetic sound electrotransformation device is mainly sensed by moving-coil type
Device and apparatus for storing electrical energy composition, the moving coil pickoff and apparatus for storing electrical energy are electrically connected by output lead, described
Apparatus for storing electrical energy be electrically connected by the conducting wire I in conducting wire with filterability mask.
In a still more specific embodiment of the invention, the moving coil pickoff also passes through the conducting wire in conducting wire
II is electrically connected with filterability mask.
Of the invention again and then in a specific embodiment, the moving coil pickoff include colorimetric sensor films,
The vibration of the coil being fixedly connected with colorimetric sensor films and the permanent magnet with fitting coils, the colorimetric sensor films drives
Coil vibration, the line of magnetic induction that the vibration cutting permanent magnet of the coil generates, to generate alternating current.
The coil is wrapped on an oscillating plate in yet a further embodiment of the present invention, described
Oscillating plate and colorimetric sensor films are integrated in a framework.
The present invention has the advantages that one of advantage due to the above structure, passes through electromagnetic sound electrotransformation device for noise
It is converted into the operation of air circulation device in driving mask, structure is simple, and it is easy to accomplish, it is environmental-friendly and efficient；Advantage two, mask
The use of middle blower, exhaust valve, filter core can allow user that can easily breathe clean air, utmostly reduce factory
Injury of the dirty air to user lung in environment, filter core it is replaceable, achieve the effect that recycling, both guarantee to suck
The quality of air plays the effect of energy conservation and environmental protection recycling；Advantage three, according to ergonomics Curve Design, connect with skin
Contact portion point uses soft silica gel, and soft silica gel elastic force fitting face reduces leak rate, and dust is not easy to leak into the protective layer of silica gel formation,
Mask airtightness when facial muscle movements is effectively improved, while comfort is good, permanent wear will not generate sense of discomfort.
Detailed description of the invention
Fig. 1 is the front elevation of one embodiment of cotton mill worker Cover for mouth and ears integral type safety device of the present invention.
Fig. 2 is the side view of one embodiment of cotton mill worker Cover for mouth and ears integral type safety device of the present invention.
Fig. 3 is the structural schematic diagram of filterability mask described in one embodiment of the invention.
Fig. 4 is the structural schematic diagram of electromagnetic sound electrotransformation device in earmuff described in one embodiment of the invention.
Fig. 5 is the schematic diagram that alternating current generates in electromagnetic sound electrotransformation device described in one embodiment of the invention.
Fig. 6 is the structural schematic diagram of filterability mask described in another embodiment of the present invention.
Fig. 7 is the structural schematic diagram of electromagnetic sound electrotransformation device in earmuff described in another embodiment of the present invention.
In figure: 1. filterability masks, 11. covers, 12. mounting cups, 13. internal layer filter cores, 14. exhaust valves, 15. blowers,
151. Fan casings, 152. fan covers, 153. fans, shell, 161. circular grooves, 17. outer layer filter cores, 18. outer layer filter covers in 16.；2. ear
Cover, 21. electromagnetic sound electrotransformation devices, 211. moving coil pickoffs, 2111. colorimetric sensor films, 2112. coils, 2113. permanent magnetics
Iron, 2114. oscillating plates, 2115. frameworks, 2116. output leads, 212. apparatus for storing electrical energy；3. elastic band, 31. conducting wires, 311.
Conducting wire I, 312. conducting wires II.
Specific embodiment
Detailed description of specific embodiments of the present invention with reference to the accompanying drawing, but applicant is not to the description of embodiment
Limitation to technical solution, any design according to the present invention, which changes in the form rather than substance, all should be considered as protection of the invention
Range.
Firstly, applicant is it should be understood that in the following description, all such as left and rights for being related to orientation, it is upper and
Under concept be that therefore cannot whereby be interpreted as the limitation to the present invention program for the location status of diagram；Phase
"inner" involved in middle explanation refers to that, close to the position of face, "outside" refers to the position far from face.
Embodiment 1
As shown in Fig. 1 to 5, a kind of mill hand of the present invention is with Cover for mouth and ears integral type safety device, including filterability
Mask 1, earmuff 2 and the elastic band 3 for connecting filterability mask 1 and earmuff 2.The elastic band 3 is set to filterability mouth
The two sides of cover 1 have elasticity, can be adjusted by itself according to shape of face.On the filterability mask 1 and earmuff 2 with skin
Contact portion generally uses soft silica gel, comfortable to be bonded, good airproof performance, and in conjunction with light fuselage, permanent wear not may experience discomfort
Sense.The filterability mask 1 is the electric dust-proof mask of actively air-supply.Electromagnetic sound electrotransformation is set inside the earmuff 2
Device 21, the electromagnetic sound electrotransformation device 21 are a kind of devices that can convert sound to using electromagnetic induction phenomenon electric energy, so
The electromagnetic sound electrotransformation device 21 can convert the noise in factory to electric energy to power to filterability mask 1.For this purpose,
The conducting wire 31 of connection filterability mask 1 and electromagnetic sound electrotransformation device 21 is provided in the elastic band 3.
As shown in Figure 1 to Figure 3, the filterability mask 1 include cover 11, it is mounting cup 12, blower 15, middle shell 16, outer
Layer filter core 17, outer layer filter cover 18, the cover 11 correspond to user's face under the action of after the wearing of mask 1 is good in elastic band 3
Portion mouth and nose position.The mounting cup 12 is installed on cover 11, and the mounting cup 12 is equipped with air inlet.
Internal layer filter core 13, the internal layer filter are installed on mounting cup 12 and at the air inlet position of corresponding mounting cup 12
The gas that blower 15 blasts is filtered by core 13.The bottom of the mounting cup 12 offers gas outlet, in mounting cup 12
Exhaust valve 14 is installed at bottom and the gas outlet position of corresponding mounting cup 12, when air-breathing, exhaust valve 14 is closed, when expiration, row
Air valve 14 is opened, and realizes the air circulation of one-in-and-one-out, reduces heat accumulation, realizes that 12 inner cavity of mounting cup is not nice and cool moist, together
When make breathing pattern lighter, be suitble to high-temperature high-humidity environment under be used for a long time.In its air inlet of the correspondence of the mounting cup 12
Position on the outside of blower 15 is installed, the blower 15 blasts air in mounting cup 12.The blower 15 includes Fan casing
151, fan cover 152 and fan 153.The inside of the Fan casing 15 is installed on the position that internal layer filter core 13 is corresponded on mounting cup 12
It sets, fan cover 152 is installed in the outside of the Fan casing 151, installs fan inside the Fan casing 151 and fan cover 152
153 and the conducting wire 31 rotated for driving fan 135 is passed through from elastic band 3, in the Fan casing 151 and fan cover 152
Portion is additionally provided with the gas passage blasted gas in mounting cup 12.The fan cover 152 is equipped with air inlet.The wind
The outside of cover 152 is equipped with middle shell 16, and the outside that 152 air inlet of fan cover is corresponded on the middle shell 16 is equipped with circular groove
161, outer layer filter core 17 is installed, the air inlet of the corresponding fan cover 152 of the circular groove 161 also opens up in the circular groove 161
There is through-hole, the gas convenient for filtering through outer layer filter core 17 enters in blower 15.The outside of the middle shell 16 is equipped with for covering
The outer layer filter cover 18 of outer layer filter core 17.The internal layer filter core 13 and outer layer filter core 17 is detachable, is reached by replacement filter core and is followed
The effect that ring uses.
As shown in Figure 4,5, the electromagnetic sound electrotransformation device 21 is mainly by moving coil pickoff 211 and apparatus for storing electrical energy
212 compositions.The line that the moving coil pickoff 211 includes colorimetric sensor films 2111, is fixedly connected with colorimetric sensor films 2111
Circle 2112 and the permanent magnet 2113 cooperated with coil 2112, the vibration band moving winding 2112 of the colorimetric sensor films 2111
Vibration, the line of magnetic induction that the vibration cutting permanent magnet 2113 of the coil 2112 generates, so that alternating current is generated, it is produced
Alternating current pass in apparatus for storing electrical energy 212 and store by output lead 2116.The colorimetric sensor films 2111
It is fixedly connected by oscillating plate 2114 with coil 2112, specifically, the coil 2112 is wrapped on oscillating plate 2114, it is described
Oscillating plate 2114 and colorimetric sensor films 2111 be integrated in a framework 2115.The vibration of the colorimetric sensor films 2111 drives vibration
The vibration of movable plate 2114, the vibration then with moving winding 2112.The colorimetric sensor films 2111 use glass fiber membrane system
Make, high mechanical strength, corrosion resistance is strong.The permanent magnet 2113 is made of Fe-Nd-B magnet.The oscillating plate
2114 and framework 2115 made of vinyon, light weight, the energy loss in conversion process can be ignored.
As shown in figure 4, the apparatus for storing electrical energy 212 is electrically connected with moving coil pickoff 211 by output lead 2116
It connects, therefore, the alternating current that the moving coil pickoff 211 generates is transmitted to apparatus for storing electrical energy 212 by output lead 2116
It is stored, the apparatus for storing electrical energy 212 generallys use lithium battery.The apparatus for storing electrical energy 212 is further through conducting wire
Conducting wire I 311 in 31 is powered to filterability mask 1, therefore, in the present embodiment, the connection filterability mask 1 and electromagnetism
The conducting wire 31 of acoustic-electric converter 21 specifically refers to the conducting wire I 311 of connection apparatus for storing electrical energy 212 and fan 153.
Please continue to refer to Fig. 1 to Fig. 5, a kind of mill hand's Cover for mouth and ears integral type safety device of the present invention
The course of work is: in textile mills, collision is made a sound between each machine, since sound has energy, when moving-coil type energy converter
After 211 experience sound wave, the sound wave of sound drives colorimetric sensor films 2111 to generate the vibration with sound wave identical frequency, the biography
The vibration of sensor film 2111 drives connected coil 2112 to vibrate, and the coil 2112 is according to frequency identical with sound wave
Rate vertical tremor cuts the line of magnetic induction of permanent magnet 2113, can produce alternation electricity during the fly-cutting line of magnetic induction
Stream is passed in apparatus for storing electrical energy 212 by output lead 2116 and is stored, and sound is thus converted into alternating current.Electricity
The electric energy stored in energy storage device 212 is transported in filterability mask 1 further through conducting wire I 311, drives 15 turns of blower
Dynamic, the blower 15 utilizes air blower principle, and extraneous air is sucked, and the air being inhaled into first is filtered through outer layer filter core 17
Purification, the gas passage water conservancy diversion through primary filtered gas by Fan casing 151 and fan cover 152 enter in mounting cup 12
Portion.Air is filtered before flowing into mounting cup 12, then through internal layer filter core 13, and clean air is breathed for user.It uses
The gas outlet discharge through mounting cup 12 again of the gas of person's exhalation.
Embodiment 2
As shown in Figure 6,7, technical solution described in the present embodiment is unlike the first embodiment: the moving coil pickoff 211
While being electrically connected with apparatus for storing electrical energy 212 by output lead 2116, moving coil pickoff 211 and filterability mask 1
Fan 153 be also directly electrically connected by the conducting wire II 312 in conducting wire 31.When specific works: when moving coil pickoff 211 is transmitted to
When the electric energy of filterability mask 1 is not enough to that filterability mask 1 is driven to work, it can use apparatus for storing electrical energy 212 and be powered；
It, can be simultaneously to electricity when the electric energy that moving coil pickoff 211 supplies filterability mask 1 is enough that filterability mask 1 is driven to work
It can the storage electric energy of storage device 212.Therefore, in the present embodiment, the connection filterability mask 1 and electromagnetic sound electrotransformation device 21
Conducting wire 31 specifically refer to connection apparatus for storing electrical energy 212 and fan 153 conducting wire I 311 and connection 211 He of moving coil pickoff
The conducting wire II 312 of fan 153.
Claims (10)
1. a kind of mill hand Cover for mouth and ears integral type safety device, including filterability mask (1), earmuff (2) and will filtering
Property mask (1) and the elastic band (3) that connects of earmuff (2), the elastic band (3) be set to the two sides of filterability mask (1),
It is characterized by: the filterability mask (1) is the electric dust-proof mask of actively air-supply, setting inside the earmuff (2)
Electromagnetic sound electrotransformation device (21), the elastic band (3) is interior to be provided with connection filterability mask (1) and electromagnetic sound electrotransformation device
(21) conducting wire (31), the electromagnetic sound electrotransformation device (21) convert electric energy for the noise in factory and pass through conducting wire (31)
Electric energy is supplied into filterability mask (1), so that filterability mask (1) be driven to work.
2. a kind of mill hand according to claim 1 Cover for mouth and ears integral type safety device, it is characterised in that described
Filterability mask (1) include cover (11), mounting cup (12), blower (15), middle shell (16), outer layer filter core (17), outer layer filter
It covers (18), the cover (11) corresponds to user face mouth and nose position under the action of after mask (1) wearing is good in elastic band (3)
It sets, the mounting cup (12) is installed on cover (11), and the mounting cup (12) is equipped with air inlet, the mounting cup
(12) bottom offers gas outlet, installs blower (15) on the outside of the position of its air inlet of the correspondence of the mounting cup (12),
The blower (15) blasts air in mounting cup (12), is equipped on the outside of the blower (15) middle shell (16), described
Middle shell (16) on correspond to and be equipped with outer layer filter core (17) on the outside of blower (15) position, be equipped on the outside of the middle shell (16)
For covering the outer layer filter cover (18) of outer layer filter core (17).
3. a kind of mill hand according to claim 2 Cover for mouth and ears integral type safety device, it is characterised in that in institute
It states on mounting cup (12) and is equipped with internal layer filter core (13) at the air inlet position of corresponding mounting cup (12), the internal layer filter core
(13) gas that blower (15) blasts is filtered.
4. a kind of mill hand according to claim 2 Cover for mouth and ears integral type safety device, it is characterised in that in institute
It states and exhaust valve (14), the exhaust valve is installed at the gas outlet position of the bottom of mounting cup (12) and corresponding mounting cup (12)
(14) it closes in air-breathing, is opened when exhaling.
5. a kind of mill hand according to claim 2 Cover for mouth and ears integral type safety device, it is characterised in that described
Blower (15) include Fan casing (151), fan cover (152) and fan (153), the inside installation of the Fan casing (151)
In the position for corresponding to its gas outlet on mounting cup (12), fan cover (152) are installed in the outside of the Fan casing (151), described
Fan casing (151) and fan cover (152) inside installation fan (153) and be passed through from elastic band (3) for driving fan
(153) gas is blasted installation by the conducting wire (31) rotated, the Fan casing (151) and fan cover (152) internal be additionally provided with
Cover the gas passage in (12).
6. a kind of mill hand according to claim 5 Cover for mouth and ears integral type safety device, it is characterised in that described
Middle shell (16) on correspond to outside at fan cover (152) position and be equipped with circular groove (161), is equipped in the circular groove (161)
Outer layer filter core (17).
7. a kind of mill hand according to claim 1 Cover for mouth and ears integral type safety device, it is characterised in that described
Electromagnetic sound electrotransformation device (21) be mainly made of moving coil pickoff (211) and apparatus for storing electrical energy (212), the moving-coil
Formula sensor (211) and apparatus for storing electrical energy (212) are electrically connected by output lead (2116), the apparatus for storing electrical energy
(212) it is electrically connected by the conducting wire I (311) in conducting wire (31) with filterability mask (1).
8. a kind of mill hand according to claim 7 Cover for mouth and ears integral type safety device, it is characterised in that described
Moving coil pickoff (211) be also electrically connected by the conducting wire II (312) in conducting wire (31) with filterability mask (1).
9. a kind of mill hand according to claim 7 or 8 Cover for mouth and ears integral type safety device, it is characterised in that institute
The coil that the moving coil pickoff (211) stated includes colorimetric sensor films (2111), is fixedly connected with colorimetric sensor films (2111)
(2112) and with coil (2112) permanent magnet (2113) cooperated, the vibration band moving-wire of the colorimetric sensor films (2111)
Enclose (2112) vibration, the line of magnetic induction that vibration cutting permanent magnet (2113) of the coil (2112) generates, to generate friendship
Time-dependent current.
10. a kind of mill hand according to claim 9 Cover for mouth and ears integral type safety device, it is characterised in that described
Coil (2112) be wrapped on an oscillating plate (2114), the oscillating plate (2114) and colorimetric sensor films (2111) are integrated in
In one framework (2115).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910840018.5A CN110419796A (en) | 2019-09-06 | 2019-09-06 | A kind of mill hand's Cover for mouth and ears integral type safety device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910840018.5A CN110419796A (en) | 2019-09-06 | 2019-09-06 | A kind of mill hand's Cover for mouth and ears integral type safety device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110419796A true CN110419796A (en) | 2019-11-08 |
Family
ID=68417752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910840018.5A Pending CN110419796A (en) | 2019-09-06 | 2019-09-06 | A kind of mill hand's Cover for mouth and ears integral type safety device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110419796A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111387594A (en) * | 2020-03-26 | 2020-07-10 | 青岛农业大学 | Sterilizing protective mask for preventing medical care personnel from infection |
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| CN208160845U (en) * | 2017-12-25 | 2018-11-30 | 深圳市柏斯曼电子科技股份有限公司 | A kind of intelligent mask being bonded that coincide with face mask |
| CN210471099U (en) * | 2019-09-06 | 2020-05-08 | 常熟理工学院 | Mouth ear shield integrated protective tool |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103219862A (en) * | 2013-04-09 | 2013-07-24 | 西安交通大学 | Noise power-generating device and noise power-generating equipment consisting of same |
| CN103501041A (en) * | 2013-10-18 | 2014-01-08 | 武汉理工大学 | Automobile-mounted noise generating set |
| CN204166846U (en) * | 2014-11-13 | 2015-02-18 | 丘椿荣 | Noise generating billboard |
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| CN111387594A (en) * | 2020-03-26 | 2020-07-10 | 青岛农业大学 | Sterilizing protective mask for preventing medical care personnel from infection |
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