CN203146927U - One-way air valve - Google Patents
One-way air valve Download PDFInfo
- Publication number
- CN203146927U CN203146927U CN 201320030468 CN201320030468U CN203146927U CN 203146927 U CN203146927 U CN 203146927U CN 201320030468 CN201320030468 CN 201320030468 CN 201320030468 U CN201320030468 U CN 201320030468U CN 203146927 U CN203146927 U CN 203146927U
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- China
- Prior art keywords
- valve
- cover body
- air
- spool
- upper cover
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model discloses a one-way air valve which comprises a valve body and a valve core. The valve body is formed by an upper valve body and a lower valve body. The upper valve body comprises an upper cover body and an upper air column. The lower valve body comprises a lower cover body and a lower air column. The upper cover body and the lower cover body are mutually fastened, a valve cavity is formed between the upper cover body and the lower cover body, and the upper air column penetrates the upper cover body to form a protruding hole in the bottom of the upper cover body. The lower air column penetrates the lower cover body, the valve core is arranged in the valve cavity and comprises a valve core body and support legs arranged at the bottom of the valve core body, the valve core body is boss-shaped, the upper surface of the valve core body clings to the protruding hole, and the support legs are in contact with the lower cover body. Due to the fact that the valve core body is designed to be boss-shaped to cling to the protruding hole formed in the bottom of the upper cover body in the way that the upper air column penetrates the upper cover body, the pressure of air in an air bag of an air cushion is large enough to enable the valve core to abut against the protruding hole to ensure that air in the air bag can not flow out when the air cushion is not aerated, air tightness and unidirectionality of the one-way air valve are ensured, materials of the valve core are saved, and cost is saved.
Description
Technical field
The utility model relates to a kind of Non-return air valve, is specifically related to the Non-return air valve on a kind of safety helmet protection air cushion.
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Background technique
Existing Non-return air valve great majority comprise valve body and spool, and the upper surface of valve body and lower surface all are connected with gas column.The free end of gas column and the internal surface of valve body form air flue, and spool places in the valve body, and the upper surface of its upper surface and valve inner is fitted, and its lower surface contacts with the lower surface of valve inner.This Non-return air valve satisfies the needs of unidirectional gas transmission to a certain extent, but there is shortcoming in it: tightness is bad, and protects the interior gas atmosphere deficiency of air bag of air cushion to cause gas to flow backwards so that spool withstands pore, and gas difficulty charges in the protection air cushion.
The model utility content
The utility model is in order to overcome the deficiency that prior art exists, and a kind of simple in structure, Non-return air valve that tightness is good is provided.
The utility model can be achieved by taking following technological scheme: a kind of Non-return air valve, comprise valve body and spool, described valve body is made of upper valve body and following valve body, described upper valve body comprises upper cover body and last gas column, described valve body down comprises lower cover and following gas column, described upper cover body and lower cover fasten mutually and between forms valve pocket, the described gas column of going up runs through upper cover body and forms protruding hole in the upper cover body bottom, described gas column down runs through lower cover, described spool places in the valve pocket, and it comprises the spool body and be arranged on the leg of spool body bottom that described spool body is the boss shape, its upper surface and protruding hole fit, and described leg contacts with lower cover.
On the basis of the above, the upper surface of the spool body described in the utility model formation groove that caves in, described groove and protruding hole fit spool body and upper cover body are fitted, when air cushion is not inflated, gas atmosphere foot in the air bag of air cushion makes the gas in the air bag can not flow backwards out in making spool withstand protruding hole, increase the tightness of whole Non-return air valve, also reduced the manufactured materials of spool simultaneously, reduced cost of production.
Leg described in the utility model is circle distribution in the bottom of spool body.
Compared with prior art, the beneficial effects of the utility model are: the utility model is designed to boss shape and last gas column with the spool body to be run through upper cover body and fits in the protruding hole that the upper cover body bottom forms, when air cushion is not inflated, gas atmosphere foot in the air bag of air cushion makes the gas in the air bag can not flow backwards out in making spool withstand protruding hole, guarantee tightness and the one-way of Non-return air valve, also reduce simultaneously the material of spool, saved cost.
Description of drawings
Fig. 1 is the overall structure schematic representation of Non-return air valve of the present utility model.
Fig. 2 is the structural representation of the spool of Non-return air valve of the present utility model.
Embodiment
Below in conjunction with accompanying drawing preferred forms of the present utility model is described in detail.
As Fig. 1, shown in Figure 2, Non-return air valve of the present utility model comprises valve body 1 and spool 2, described valve body 1 is made of upper valve body 11 and following valve body 12, described upper valve body 11 comprises upper cover body 111 and last gas column 112, described valve body 12 down comprises lower cover 121 and following gas column 122, described upper cover body 111 fastens mutually with lower cover 121 and between forms valve pocket 3, the described gas column 112 of going up runs through upper cover body 111 and forms protruding hole 113 in upper cover body 111 bottoms, described gas column 122 down runs through lower cover 121, described spool 2 is made by silica gel material, place in the valve pocket 3, it comprises spool body 21 and the leg 22 that is arranged on spool body 21 bottoms and is circle distribution, described spool body 21 is the boss shape, its upper surface caves in and forms groove 23 and fit with protruding hole 113 spool body 21 and upper cover body 111 are fitted, and described leg 22 contacts with lower cover 121.The gas column 112 of going up of the present utility model is connected with inflator, and following gas column 122 is connected with the protection air cushion, and when giving the inflation of protection air cushion, gas pressure makes spool 2 leave the protruding hole 113 of upper cover body 111 bottoms, and gas charges in the protection air cushion; When inflator is air-breathing; because the gas pressure of protection air cushion one side is bigger than the gas pressure of inflator side; gas makes spool 2 be expressed to 113 places, protruding hole and plastic deformation takes place and blocks protruding hole 113, and the gas of protection air cushion side can not refluxed, and realizes the purpose of unidirectional air guide.
The above person of thought, it only is the preferred embodiment of the utility model, when the scope that can not limit the utility model enforcement with this, namely the content of putting down in writing according to the utility model claim and model utility specification has generally been done the simple equivalent variation and has been modified, and all still belongs within the utility model claim institute covering scope.In addition, summary part and title only are the usefulness of auxiliary patent document search, are not the interest field that limits the utility model.
Claims (3)
1. Non-return air valve, comprise valve body and spool, described valve body is made of upper valve body and following valve body, described upper valve body comprises upper cover body and last gas column, described valve body down comprises lower cover and following gas column, it is characterized in that described upper cover body and lower cover fasten mutually and between forms valve pocket, the described gas column of going up runs through upper cover body and forms protruding hole in the upper cover body bottom, described gas column down runs through lower cover, described spool places in the valve pocket, and it comprises the spool body and be arranged on the leg of spool body bottom that described spool body is the boss shape, its upper surface and protruding hole fit, and described leg contacts with lower cover.
2. Non-return air valve according to claim 1, the upper surface that the it is characterized in that described spool body formation groove that caves in, described groove and protruding hole fit spool body and upper cover body are fitted.
3. Non-return air valve according to claim 1 and 2 is characterized in that described leg is circle distribution in the bottom of spool body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320030468 CN203146927U (en) | 2013-01-22 | 2013-01-22 | One-way air valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320030468 CN203146927U (en) | 2013-01-22 | 2013-01-22 | One-way air valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203146927U true CN203146927U (en) | 2013-08-21 |
Family
ID=48974451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320030468 Expired - Fee Related CN203146927U (en) | 2013-01-22 | 2013-01-22 | One-way air valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203146927U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103734985A (en) * | 2014-01-13 | 2014-04-23 | 东莞市杰乐盛世运动用品有限公司 | Air cushion type inner circulation shoe sole |
-
2013
- 2013-01-22 CN CN 201320030468 patent/CN203146927U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103734985A (en) * | 2014-01-13 | 2014-04-23 | 东莞市杰乐盛世运动用品有限公司 | Air cushion type inner circulation shoe sole |
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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 |
Granted publication date: 20130821 Termination date: 20160122 |
|
| EXPY | Termination of patent right or utility model |