CN2153689Y - Inflatable tyre gas check - Google Patents

Abstract

The utility model provides an inflatable tyre gas check. The inner cavity of an air gate is changed to an intercommunication cylinder with two different diameters; the end of the cavity having a big diameter is provided with a locating piece; the cavity having a small diameter is provided with screw. Simultaneously, a valve inside having an elastic element is glidingly fitted and assembled with the cavity having the big diameter of the air gate. Besides, an air gate cap is connected with the cavity having the small diameter of the air gate through screw, and the elastic element is arranged at the connecting part of the air gate cap and the cavity having the small diameter. The utility model has the advantages of simple structure and material saving. A double sealing structure is provided under the condition of having one leached surface, and the long air-tightness of the inflated tyre can be ensured.

Description

Inflatable tyre gas check

The utility model is a kind of air tyre air valve, and it belongs to airtyred annex, is made up of valve, valve inside and valve cap.

Disclose a kind of cycle tyre vent plug device in CN2085322U, it is will be tightened in by the vent plug that plastics valve collar and interior dress rubbery stopper are constituted on the former cycle tyre valve to reach with the cap of calming the anger not only can but also can make its long-term gastight purpose to tyre inflation.But this device exists between vent plug and the valve, formed a plurality of leached surfaces between rubbery stopper and the plastics valve pipe box, in case and rubbery stopper contaminated, then whole device is with ineffective.

Task of the present utility model provides a kind of air tyre air valve with multi-sealed measure.

Task of the present utility model is finished as follows: the inner chamber of valve is a cylindrical body two kinds of different-diameters, intercommunication, the end of its major diameter inner chamber is provided with bounding means, the minor diameter inner cavity is arranged with screw thread, is equipped with the major diameter inner chamber assembling movingly mutually of valve inside with the valve of elastic component on it.Minor diameter inner chamber being threaded on it of valve cap and valve is equipped with elastic component in their joint.

The utility model is simple in structure, and materials are economized, and under the situation that a leached surface is only arranged and have dual sealing configuration, so can guarantee that the tire of inflating is air tight for a long time.

Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail.

Fig. 1 is a sectional view of the present utility model.

With reference to Fig. 1, in addition the valve (1) of hangers (6) is connected by sealing with air tyre, and its inner chamber is the cylindrical body of the intercommunication of two kinds of different-diameters, wherein the end of the major diameter inner chamber boss that is provided with snap ring or forms through flange; The inner cavity of minor diameter is arranged with the screw thread that matches with valve cap (4); There is a circle to put in the formed dome ring of major diameter inner chamber in the jointing place of size diameter inner chamber by the minor diameter inner chamber, be equipped with the major diameter inner chamber assembling movingly mutually of valve inside (2) that elastic component (3) ［ can be rubber or rubber and plastic or grease ］ and valve (1) on it, the axial dimension of valve inside (2) is better during greater than its radial dimension.Valve cap (4) is connected with the screw thread of minor diameter inner chamber on it of valve (1), is equipped with elastic component (3) in their joint.

During inflation, screw off valve cap (4), pressurized air enters air tyre from the minor diameter inner chamber of valve (1) gap by valve inside (2) and major diameter internal chamber wall.As with the inflation of family expenses inflators, then utilize the clip of pump to tangle hangers (6) on the valve (1) and inflator and valve (1) are fastenedly connected be one, in the gas replenishment process, valve inside (2) will slidably reciprocate in valve (1).After inflation finishes, because the pressure difference that air tyre is inside and outside, make elastic component (3) on the valve inside (2) push up the minor diameter inner chamber and put on the formed dome ring of major diameter inner chamber and make that gas can't escape in the tire, can screw on valve cap (4) this moment, promptly finish whole process.

Claims (4)

1, a kind of air tyre air valve, by valve (1), valve inside (2) and valve cap (4) are formed, the inner chamber that it is characterized in that valve (1) is the cylindrical body of the intercommunication of two kinds of different-diameters, and the end in its chamber, big footpath is provided with bounding means (5), and the path cavity segment is provided with screw thread, be equipped with chamber, the big footpath assembling movingly mutually of valve inside (2) with the valve (1) of elastic component (3), path chamber being threaded on it of valve cap (4) and valve (1) is equipped with elastic component (3) in the joint of both (4,1).

2, valve according to claim 1 is characterized in that the external hangers of valve (1) (6), and its jointing place, chamber, large and small footpath has the path chamber to put in the formed dome ring in chamber, big footpath.

3, valve according to claim 1, the axial dimension that it is characterized in that valve inside (2) is greater than its radial dimension.

4, valve according to claim 1 is characterized in that bounding means (5) is snap ring or the boss that forms through flange.

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