CN204190944U - A kind of air respiratorresuscitator microphone - Google Patents
A kind of air respiratorresuscitator microphone Download PDFInfo
- Publication number
- CN204190944U CN204190944U CN201420633940.XU CN201420633940U CN204190944U CN 204190944 U CN204190944 U CN 204190944U CN 201420633940 U CN201420633940 U CN 201420633940U CN 204190944 U CN204190944 U CN 204190944U
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- China
- Prior art keywords
- microphone
- shell
- wheat
- electret
- air respiratorresuscitator
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Abstract
The utility model discloses a kind of air respiratorresuscitator microphone, described microphone is arranged in air respiratorresuscitator face shield, described microphone comprises shell, electret wheat and gland, the upper surface of described shell is provided with speech through hole, described electret wheat is arranged in described shell, described electret wheat is sealed in described shell by the bottom that described gland is arranged at described shell, is also provided with silica gel sheath, waterproof sound passing membrane and noise reduction cotton in described shell; Described waterproof sound passing membrane is arranged at the inner side of described speech through hole; Described silica gel sheath surface is provided with depressed part, and described electret wheat is embedded in the depressed part of described silica gel, and described noise reduction cotton is filled in the space between described waterproof sound passing membrane and electret wheat.The utility model effectively improves the waterproof noise resisting ability of air respiratorresuscitator microphone.
Description
Technical field
The utility model relates to fire-fighting equipment field, particularly relates to a kind of air respiratorresuscitator microphone.
Background technology
Air respiratorresuscitator is a kind of self-supporting open empty respirator, air respiratorresuscitator is widely used in the departments such as fire-fighting, chemical industry, boats and ships, oil, smelting, warehouse, laboratory, mine, put out a fire safely and effectively under the various environment such as dense smoke, poison gas, steam or anoxic for fireman or the rescue personnel that speedily carries out rescue work, rescue and relief work and rescue.Air respiratorresuscitator comprises face shield, gas cylinder, bottle band group, shoulder belt, alarm whistle, Pressure gauge, bottle valve, pressure reducer, back bracket, waistband group, snap joint and supply valve etc., is provided with call microphone in described face shield.
Air respiratorresuscitator utilizes the self-supporting open respirator of compressed-air actuated malleation, staff passes through full facepiece mask from lung's breath, breather valve to enter in air when staff exhales, appropriate fresh air is had to store gas cylinder switch by gas, flexible conduit supply valve in pressure reducer, gas is sucked human lung by full facepiece mask air respiratorresuscitator gas cylinder, complete whole breath cycle process, owing to being provided with two admission air valves and outlet valve in full facepiece mask in this breath cycle process, they are that one direction is opened in respiratory, therefore, whole airflow direction is advance along a direction all the time, form whole breath cycle process.Open bottle valve, pressure-air is successively through bottle valve, pressure reducer, after carrying out one-level decompression, export the medium pressure gas of about 0.7MPa, then press wireway to deliver to steam supply valve in warp, steam supply valve is by the inspiratory capacity of medium pressure gas according to wearer, carry out second depressurized, post-decompression gas inlet face cover, breathes for wearer, the outlet valve of foul smell on face shield of characteristics of contaminated respiratory droplets is discharged in air, and such gas all the time can not adverse current along a direction flowing.
Microphone described in prior art adopts using single electret wheat as conversion element usually, by being welded to connect in pcb board, realizes converting voice signal to the signal of telecommunication.And microphone is easily subject to the noise jamming in external environment condition in use, and the definition that hum affects its transfer voice is ridiculed in generation, particularly in scene of fire, and the outer surface of microphone is with cavernous structure, the water of external environment condition or water vapour easily enter microphone and disturb the normal operation of its inner member, shorten its useful life.For this reason, be necessary to further improve above-mentioned microphone structure.
Utility model content
Technical problem to be solved in the utility model is: provide a kind of air respiratorresuscitator microphone with water-proof noise reducing function.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is:
A kind of air respiratorresuscitator microphone, described microphone is arranged in air respiratorresuscitator face shield, described microphone comprises shell, electret wheat and gland, the upper surface of described shell is provided with speech through hole, described electret wheat is arranged in described shell, described electret wheat is sealed in described shell by the bottom that described gland is arranged at described shell, is also provided with silica gel sheath, waterproof sound passing membrane and noise reduction cotton in described shell;
Described waterproof sound passing membrane is arranged at the inner side of described speech through hole;
Described silica gel sheath surface is provided with depressed part, and described electret wheat is embedded in the depressed part of described silica gel, forms an individual cavities bottom described electret wheat and described depressed part;
Described noise reduction cotton is filled in the space between described waterproof sound passing membrane and electret wheat.
Further, the medial surface of described gland is provided with waterproof grommet.
Further, described gland is secured by bolts on shell.
The beneficial effects of the utility model are: be different from existing air respiratorresuscitator and do not have waterproof anti-noise ability, useful life is limited, the utility model air respiratorresuscitator arranges waterproof sound passing membrane inside speech through hole, effectively prevent moisture from entering enclosure, described electret wheat is arranged in silica gel sheath, form individual cavity noise reduction, and electret wheat vibration noise can be reduced, and by filling noise reduction cotton between waterproof sound passing membrane and electret wheat, effective filtering external ambient noise, thus the water-proof noise reducing ability effectively improving microphone.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model air respiratorresuscitator microphone;
Label declaration:
1, shell; 2, gland; 3, silica gel sheath; 4, electret wheat;
5, noise reduction is cotton; 6, waterproof sound passing membrane; 7, individual cavities.
Embodiment
By describing technology contents of the present utility model in detail, realized object and effect, accompanying drawing is coordinated to be explained below in conjunction with execution mode.
The design of the utility model most critical is: improve waterproof ability by arranging waterproof sound passing membrane, and by arranging the anti-noise ability of noise reduction cotton and silica gel sheath raising microphone.
Please refer to Fig. 1, a kind of air respiratorresuscitator microphone, described microphone is arranged in air respiratorresuscitator face shield, described microphone comprises shell 1, electret wheat 4 and gland 2, the upper surface of described shell 1 is provided with speech through hole, described electret wheat 4 is arranged in described shell 1, and described electret wheat 4 is sealed in described shell 1 by the bottom that described gland 2 is arranged at described shell 1, is also provided with silica gel sheath 3, waterproof sound passing membrane 6 and noise reduction cotton 5 in described shell 1;
Described waterproof sound passing membrane 6 is arranged at the inner side of described speech through hole;
Described silica gel sheath 3 surface is provided with depressed part, and described electret wheat 4 is embedded in the depressed part of described silica gel, forms an individual cavities 7 bottom described electret wheat 4 and described depressed part;
Described noise reduction cotton 5 is filled in the space between described waterproof sound passing membrane 6 and electret wheat 4.
From foregoing description, the beneficial effects of the utility model are: the utility model air respiratorresuscitator arranges waterproof sound passing membrane 6 inside speech through hole, effectively prevent moisture from entering shell 1 from speech through hole inner, improve the waterproof ability of microphone; By described electret wheat 4 is arranged in silica gel sheath 3, form individual cavities 7 and carry out noise reduction, and silica gel sheath 3 available energy can reduce electret wheat 4 vibration noise, further by filling noise reduction cotton 5 between waterproof sound passing membrane 6 and electret wheat 4, effective filtering external ambient noise, thus the noise reduction capability improving microphone further.
Further, the medial surface of described gland 2 is provided with waterproof grommet, and described gland 2 is secured by bolts on shell 1.
Seen from the above description, described waterproof grommet effectively can improve the sealing between gland 2 and shell 1, prevents moisture from carrying out into microphone inside from the gap between gland 2 and shell 1.
Please refer to Fig. 1, the embodiment one of utility model is: a kind of air respiratorresuscitator microphone, comprises shell 1 and is arranged at the gland 2 bottom described shell 1, and described shell 1 and gland 2 are sealed and matched formation one cavity;
The upper surface of described shell 1 is provided with speech through hole, is provided with electret wheat 4 in described cavity, and described electret wheat 4 is conversion element, for sound wave is converted to the signal of telecommunication;
For preventing the moisture of external environment from entering into its life-span of microphone internal influence, the inner surface of described speech through hole is provided with waterproof sound passing membrane 6, described waterproof sound passing membrane 6 effectively can filter moisture and make sound wave can be normally through;
In the present embodiment, in order to improve the waterproof ability of microphone, between described gland 2 and shell 1, be also provided with sealing ring or sealing gasket.
Silica gel sheath 3 is also provided with in described cavity, described silica gel sheath 3 surface is provided with depressed part, be arranged in described depressed part by described electret wheat 4, described electret wheat 4 forms individual cavities 7 with the bottom of described depressed part, carries out noise reduction by described individual cavities 7; Further, between described waterproof sound passing membrane 6 and electret wheat 4, fill full noise reduction cotton 5, described noise reduction cotton 5 effectively can absorb the noise of outer ring environment.
In sum, the utility model air respiratorresuscitator arranges waterproof sound passing membrane 6 inside speech through hole, effectively prevent moisture from entering shell 1 inner, described electret wheat 4 is arranged in silica gel sheath 3, form individual cavity noise reduction, and electret wheat 4 vibration noise can be reduced, and by filling noise reduction cotton 5 between waterproof sound passing membrane 6 and electret wheat 4, effective filtering external ambient noise, thus the water-proof noise reducing ability effectively improving microphone.
The foregoing is only embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every equivalents utilizing the utility model specification and accompanying drawing content to do; or be directly or indirectly used in relevant technical field, be all in like manner included in scope of patent protection of the present utility model.
Claims (3)
1. an air respiratorresuscitator microphone, described microphone is arranged in air respiratorresuscitator face shield, described microphone comprises shell, electret wheat and gland, the upper surface of described shell is provided with speech through hole, described electret wheat is arranged in described shell, described electret wheat is sealed in described shell by the bottom that described gland is arranged at described shell, it is characterized in that, is also provided with silica gel sheath, waterproof sound passing membrane and noise reduction cotton in described shell;
Described waterproof sound passing membrane is arranged at the inner side of described speech through hole;
Described silica gel sheath surface is provided with depressed part, and described electret wheat is embedded in the depressed part of described silica gel, forms an individual cavities bottom described electret wheat and described depressed part;
Described noise reduction cotton is filled in the space between described waterproof sound passing membrane and electret wheat.
2. air respiratorresuscitator microphone according to claim 1, is characterized in that, the medial surface of described gland is provided with waterproof grommet.
3. air respiratorresuscitator microphone according to claim 2, is characterized in that, described gland is secured by bolts on shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420633940.XU CN204190944U (en) | 2014-10-29 | 2014-10-29 | A kind of air respiratorresuscitator microphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420633940.XU CN204190944U (en) | 2014-10-29 | 2014-10-29 | A kind of air respiratorresuscitator microphone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204190944U true CN204190944U (en) | 2015-03-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420633940.XU Expired - Fee Related CN204190944U (en) | 2014-10-29 | 2014-10-29 | A kind of air respiratorresuscitator microphone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204190944U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104799453A (en) * | 2015-05-06 | 2015-07-29 | 苏州市吴中区甪直明达漂染厂 | Cotton-yarn mask with Bluetooth microphone |
-
2014
- 2014-10-29 CN CN201420633940.XU patent/CN204190944U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104799453A (en) * | 2015-05-06 | 2015-07-29 | 苏州市吴中区甪直明达漂染厂 | Cotton-yarn mask with Bluetooth microphone |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150304 Termination date: 20211029 |