Rotary operated air valves

Abstract

An air valve in rotary operation includes valve seat, an air tube and a flange, a coiled case connected with the air tube fiexibly, a valve plug set at internal edge of coiled case in sliding a closing part and spacing part set at each of internal and external ends of the air tube, a rotary part set at internal end of the coiled case to rotate on one the same plane under restraining of the spacing part, an acuating part set at peripheral wall of the coiled case, air vent part set in internal end of the valve plug for air in and out of object to be air charged, an air charging entrance set at external end and to be connected through with the air vent part, passive part set at the peripheral wall of the valve plug and to make the valve plug exile move relative to the coiled case under the driving of acuation part.

Description

(1) Technical field [0001] The invention relates to an air valve, especially a rotary operated air valve. (2) Background technology [0002] A kind of existing air valve 91 for inflatable cushion as shown in Figure 1 is to be installed in an inflatable cushion 92 specific places, and after supplying inflated air, is closed. The air valve 91 includes a hollow valve seat 93 combined with the opening of the inflatable cushion 92, and a screw cap 95 that is connected through a connecting piece 94 and can be screwed with the external thread 931 of the valve seat 93 by its internal internal thread 951. After inflation, screw cap 95 is tightened to prevent gas from leaking out. However, in the actual operation process, when the inflatable cushion 92 is inflated to an appropriate pressure, the outlet pipeline of the air compressor (not shown) that supplies the pressure air must be detached from the valve seat 93 before the screw cap 95 can be further tightened. In the valve seat 9...

AI Technical Summary

Problems solved by technology

However, in the actual operation process, when the inflatable cushion 92 is inflated to an appropriate pressure, the outlet pipeline of the air compressor (not shown) that supplies the pressure air must be detached from the valve seat 93 before the screw cap 95 can be further tightened. Therefore, part of the air will leak out from the inflatable cushion 92 in the gap between the two actions, so that the actual inflation pressure of the inflatable cushion 92 is slightly reduced and the inflation effect is not good.

On the contrary, in order to avoid the leakage of gas during the above-mentioned process as much as possible, the operator must move very quickly and shorten the time. This limitation will cause pressure and trouble to the unfamiliar operator.

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