Side airbag

Abstract

A side airbag includes: an inflator that ejects gas and is provided at a side of a seat; a cushion that is deployed when receiving the gas from the inflator; a diaphragm that divides the cushion into an upper chamber and a lower chamber by partitioning the inside of the cushion along a first axis; a diffuser that supplies the gas ejected from the inflator to the upper chamber and the lower chamber separately; and a blocking portion which divides the upper chamber into a rear portion and a front portion by partitioning the inside of the cushion along a second axis, the blocking portion includes a plurality of communication portions formed there-through, wherein through each of the plurality of communication portions gas is communicated, and wherein the rear portion receives the gas from the inflator and the front portion receives the gas from the rear portion, whereby the rear portion and the front portion are inflated in sequence in the upper chamber when the cushion is deployed.

Description

[0001] Cross References to Related Applications [0002] Pursuant to Title 35, United States Code, Section 119(a), this application claims the benefit of Korean Patent Application No. 10-2012-0129853 filed on November 16, 2012, the entire contents of which are hereby incorporated by reference. technical field [0003] The present disclosure relates to a side airbag that protects a passenger during a vehicle collision. Background technique [0004] Generally, various airbags have been installed in vehicles to protect passengers from collisions. Among these airbags are included side airbags for protecting occupants from side collisions of the vehicle, and are arranged at sides of seats to protect occupants from broken glass pieces and falling doors during side collisions. [0005] figure 1 is a side view showing a side airbag according to the prior art. The side airbag includes: an inflator 1 for ejecting gas upon a vehicle collision; a cushion 10 for protecting a passenger...

AI Technical Summary

Problems solved by technology

[0007] Further, the gas charged into the lower part of the cushion 10 and then moved to the upper part of the cushion through the membrane 14 is exhausted through the exhaust hole 12, and thus the gas may not be sufficiently supplied to the upper part of the cushion 10 and further may not pass through the upper part of the cushion 10. complete loop inside

[0008] Therefore, the side air bag may not be fully deployed at the time of a vehicle collision and its deployment speed may be reduced, and thus the side air bag may not sufficiently protect a passenger at the time of a vehicle collision

[0009] In addition, because the general side airbag is provided on the side of the seat, the deployed cushion 10 will be in contact with the side of the passenger, and thus the passenger may be injured due to the rapid deployment of the cushion 10 and the high inflation pressure.

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