Airbag

Abstract

The invention relates to an airbag which comprises a sleeve barrel, a gas cylinder adapter, a spring, a needle, a torsional spring rod and an airbag body. According to the airbag, the spring is made to expand by rotating the torsional spring rod, the needle is pushed by the spring to move horizontally and punctures the cylinder mouth of a gas cylinder, gas in the gas cylinder enters the airbag body fast, and the airbag body is automatically inflated. According to the airbag, the cylinder mouth the gas cylinder is punctured through a mechanical transmission mechanism, air inflation is fast, timely protection can be provided for the human body, and the airbag is safe and reliable. The airbag is simple in structure and small in size, meets the design requirement of a portable device, and is convenient to carry and wide in application range.

Description

technical field [0001] The invention relates to a safety airbag, in particular to a safety airbag which can be used to protect a human body when the human body falls. Background technique [0002] As early as the middle of the 20th century, American John Hertlett invented the airbag used for automobile safety protection. After decades of development, the technology of automobile airbag has become more mature. The technical principle of automobile airbag technology generally uses sodium azide and potassium nitrate to undergo a violent chemical reaction to quickly generate nitrogen to achieve the purpose of rapid inflation. [0003] With the development of technology and the improvement of living standards, the use of airbags is no longer limited to cars, but has expanded to people's daily life. As a common behavior in daily life, falls can occur in any age group, among them, it is more common in the elderly population. Because falls can lead to consequences such as psycholo...

AI Technical Summary

Problems solved by technology

[0004] Although the response speed of automobile airbags is very fast, a lot of heat and noise will be generated in the process, and the gas generating device is large in size and heavy in weight, which is not suitable for application in human body airbags; patent 201010517760.1 discloses an automatic Inflatable life jacket, the airbag of this life jacket uses calcium carbide to react with water to produce acetylene gas, the gas can be used to inflate the life jacket through the gas delivery hose, but its use occasions are limited, the limitations are too large, and it cannot be applied to the automatic control of human falls A wearable airbag to prevent fall injuries proposed by Tamura Toshishi and Yoshimura Saito, Chiba University, Japan (Tamura T, Yoshimura T, Sekine m, Uchida M, Tamura O.A wearable airbag to prevent fall injuries.

[0005] In: IEEE Transactions on Information Technology in Biomedicine, 2009, 13:910~914), the air bag inflation device uses the explosion of gunpowder to melt a small hole at the mouth of the gas cylinder to achieve deflation, but its technology in practical application complex, difficult to generalize

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