CN209925717U - Contact type airtight structure of inflating valve - Google Patents
Contact type airtight structure of inflating valve Download PDFInfo
- Publication number
- CN209925717U CN209925717U CN201920569931.1U CN201920569931U CN209925717U CN 209925717 U CN209925717 U CN 209925717U CN 201920569931 U CN201920569931 U CN 201920569931U CN 209925717 U CN209925717 U CN 209925717U
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- annular groove
- extension pipe
- valve base
- inflating valve
- gas channel
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Abstract
The utility model discloses a valve contact type airtight structure, which comprises a valve base, an extension pipe, a rubber ring and an O-shaped sealing ring; the lower end of the extension pipe is sleeved on the cylinder of the inflating valve base, an upper gas channel of the extension pipe is communicated with a lower gas channel of the inflating valve base, the O-shaped sealing ring is located between an annular groove at the lower end of the extension pipe and the outer wall of the cylinder of the inflating valve base, and the rubber ring is located between the outer wall of the cylinder of the inflating valve base and the inner wall of the upper gas channel of the extension pipe. Because the utility model discloses extension pipe lower extreme just forms an annular groove along radial outside extension in this extension section, and O type sealing washer cover is put in this annular groove, and O type sealing washer is locked in the annular groove by the annular groove, even O type sealing washer warp and also can not deviate from the annular groove, has life's advantage.
Description
Technical Field
The utility model relates to a inflating valve especially relates to an inflating valve contact airtight structure.
Background
The function of the valve is to inflate and deflate the tire as a small part and to maintain the seal after the tire is inflated. The common valve is composed of three main parts, namely a valve body, a valve core and a valve cap. As shown in fig. 1 and 2, the conventional valve body mainly comprises a valve base 1 ', an extension tube 2' and a sealing ring 3 ', the sealing ring 3' is sleeved on the lower part of the extension tube 2 ', the lower end of the extension tube 2' is sleeved in an air passage of the valve base 1 ', the sealing ring 3' is positioned between the top surface of the valve base 1 'and an annular flange 21' of the extension tube 2 ', the sealing ring 3' is extruded by the extension tube and the extension tube to deform, the deformed sealing ring 3 'is easy to be separated, and because only one layer of sealing structure is provided, the whole valve loses air tightness after the sealing ring 3' is denatured.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a long service life's inflating valve contact airtight structure.
In order to achieve the above object, the technical solution of the present invention is:
the utility model relates to a valve contact type airtight structure, which comprises a valve base, an extension pipe, a rubber ring and an O-shaped sealing ring; the middle part of the inflating valve base is provided with a lower gas channel which runs through the whole length, the center of the lower gas channel is provided with a column body which is erected upwards, the top of the column body is provided with more than one column body annular groove, and the rubber ring is sleeved in the column body annular groove; the middle part of the extension pipe is provided with an upper gas channel which runs through the whole length, the lower end of the extension pipe is extended outwards along the radial direction and forms an annular groove in the extension section, an O-shaped sealing ring is sleeved in the annular groove, the lower end of the extension pipe is sleeved on the cylinder of the inflating valve base, the upper gas channel of the extension pipe is communicated with the lower gas channel of the inflating valve base, the O-shaped sealing ring is positioned between the annular groove at the lower end of the extension pipe and the outer wall of the cylinder of the inflating valve base, and the rubber ring is positioned between the outer wall of the cylinder of the inflating valve base and the inner wall of the upper gas channel of the.
The lower part of the upper gas channel of the extension pipe is provided with a section of conical pipe which is sleeved on the rubber ring.
After the scheme is adopted, the utility model has the advantages of it is following:
1. because the utility model discloses extension pipe lower extreme just forms an annular groove along radial outside extension in this extension section, and O type sealing washer cover is put in this annular groove, and O type sealing washer is locked in the annular groove by the annular groove, even O type sealing washer warp and also can not deviate from the annular groove, has long service life's advantage.
2. Because the utility model discloses a conical duct at first carries out the press seal, and the sleeve pipe is difficult not hard up.
3. Because the utility model discloses have two-layer sealing washer (rubber ring and O type sealing washer) seal structure, the gas tightness is better.
4. Because the utility model discloses an extension intraductal wall produces the extrusion to O type sealing washer, makes O type sealing washer realize the tight fit to base main part outer wall, has better gas tightness and is difficult not hard up at the driving in-process.
The invention will be further described with reference to the accompanying drawings and specific embodiments.
Drawings
FIG. 1 is a front view of a conventional valve body;
FIG. 2 is an exploded view of a conventional valve body;
fig. 3 is a front view of the present invention;
fig. 4 is an exploded view of the present invention.
Detailed Description
As shown in fig. 3 and 4, the present invention relates to a contact type airtight structure of a valve, which comprises a valve base 1, an extension pipe 2, a rubber ring 3, and an O-shaped sealing ring 4.
The middle part of the inflating valve base 1 is provided with a gas lower channel 11 which runs through the whole length, the center of the gas lower channel is provided with a column body 12 which is erected upwards, the top of the column body 12 is provided with more than one column body annular groove 13, and the rubber ring 3 is sleeved in the column body 12 annular groove 13; the middle part of the extension pipe 2 is provided with an upper gas channel 21 which runs through the whole length, the lower end of the extension pipe 2 is extended outwards along the radial direction and forms an annular groove 22 in the extension section, an O-shaped sealing ring 4 is sleeved in the annular groove 22, the lower end of the extension pipe 2 is sleeved on the cylinder 12 of the inflating valve base 1, the upper gas channel 21 of the extension pipe 2 is communicated with the lower gas channel 11 of the inflating valve base 1, the O-shaped sealing ring 4 is positioned between the annular groove 22 at the lower end of the extension pipe 2 and the outer wall of the cylinder 12 of the inflating valve base 1, and the rubber ring 3 is positioned between the outer wall of the cylinder 12 of the inflating valve base 1 and the inner wall of the upper gas channel 21 of.
A preferred embodiment: in order to achieve better sealing effect, the lower part of the gas upper channel 21 of the extension pipe 2 is provided with a section of conical pipe 211, and the conical pipe 211 is sleeved on the rubber ring 3.
The above description is only a preferred embodiment of the present invention, and therefore the scope of the present invention should not be limited thereby, and all equivalent changes and modifications made within the scope of the claims and the specification should be considered within the scope of the present invention.
Claims (2)
1. The utility model provides a inflating valve contact airtight structure which characterized in that: comprises an inflating valve base, an extension pipe, a rubber ring and an O-shaped sealing ring; the middle part of the inflating valve base is provided with a lower gas channel which runs through the whole length, the center of the lower gas channel is provided with a column body which is erected upwards, the top of the column body is provided with more than one column body annular groove, and the rubber ring is sleeved in the column body annular groove; the middle part of the extension pipe is provided with an upper gas channel which runs through the whole length, the lower end of the extension pipe is extended outwards along the radial direction and forms an annular groove in the extension section, an O-shaped sealing ring is sleeved in the annular groove, the lower end of the extension pipe is sleeved on the cylinder of the inflating valve base, the upper gas channel of the extension pipe is communicated with the lower gas channel of the inflating valve base, the O-shaped sealing ring is positioned between the annular groove at the lower end of the extension pipe and the outer wall of the cylinder of the inflating valve base, and the rubber ring is positioned between the outer wall of the cylinder of the inflating valve base and the inner wall of the upper gas channel of the.
2. The contact type airtight structure for a valve according to claim 1, wherein: the lower part of the upper gas channel of the extension pipe is provided with a section of conical pipe which is sleeved on the rubber ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920569931.1U CN209925717U (en) | 2019-04-24 | 2019-04-24 | Contact type airtight structure of inflating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920569931.1U CN209925717U (en) | 2019-04-24 | 2019-04-24 | Contact type airtight structure of inflating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209925717U true CN209925717U (en) | 2020-01-10 |
Family
ID=69088611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920569931.1U Active CN209925717U (en) | 2019-04-24 | 2019-04-24 | Contact type airtight structure of inflating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209925717U (en) |
-
2019
- 2019-04-24 CN CN201920569931.1U patent/CN209925717U/en active Active
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