Inflation valve with safety valve function

Abstract

The invention relates to an inflation valve with a safety valve function. The inflation valve with the safety valve function comprises a valve shell. An upper air chamber, a lower air chamber and a second valve port are formed in the valve shell. A valve deck is detachably connected to the valve shell. An inflation one-way valve element assembly is arranged in the position of the second valve port. The inflation valve with the safety valve function is characterized in that an inwards-concave exhaust cavity is formed in the top surface of the valve deck, and a first valve port which is communicated with the upper air chamber in the state that the valve deck is tightly screwed on the valve shell is formed in the bottom surface of the exhaust cavity; an exhaust one-way valve element assembly which blocks the first valve port in the normal state is arranged in the exhaust cavity, and the valve deck triggers and opens the inflation one-way valve element assembly in the state that the valve deck is tightly screwed on the valve shell, so that the upper air chamber is communicated with the lower air chamber. The valve deck is tightly screwed on the valve shell, the exhaust one-way valve element assembly works, and the inflation valve serves as a safety valve at the moment; the valve deck leaves the valve shell, and the inflation valve can be used for inflation operation and exhaust operation normally. The inflation valve has two functions, an original safety valve on an inflation product can be omitted, cost is reduced, and the structure of the inflation product is simplified.

Description

technical field [0001] The invention relates to an inflation valve for inflatable products, in particular to an inflation valve with a safety valve function. Background technique [0002] Larger equipment that needs to be inflated, such as inflatable beds and inflatable boats, are equipped with air valves. The types of air valves can be roughly divided into two categories according to their uses. One is the inflatable valve used for inflation. For example, a Chinese utility model patent with a patent number of ZL201120322164.8 (announcement number of CN202203458U) discloses such an inflatable valve. An inflatable valve comprises a casing, the casing is provided with a working cavity communicated with a working environment and an air intake cavity communicated with the outside world, the working cavity and the intake cavity are communicated with each other through a valve port, and an inflatable valve is arranged at the position of the valve port. To the spool assembly, the ...

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Problems solved by technology

[0004] Because the existing inflatable products need to be equipped with two kinds of valves, the cost of the inflatable products is increased, and the failure rate of the inflatable products is also increased due to the existence of the two valves, so it is not convenient to fold the inflatable products

[0005] During the inflation and exhaust process of the inflation valve, the valve port is in a normally open state, and there is no filtering structure inside the inflation valve to prevent impurities from entering. , the surrounding wall with air holes plays a certain role in preventing impurities from entering the valve body, but in some special inflatable products, such as surfboards, there are many thin lines inside, and these thin lines will be caught when the airbag is rolled up. If it is messy or cut off, the thin wire is likely to be stuck on the gasket of the air valve. Once the thin wire is stuck on the gasket of the air valve, it will cause the air valve to leak

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