side airbag device

Abstract

An object of the present invention is to provide a side airbag device capable of quickly and accurately deploying the entire airbag of the side airbag device at a regular position and capable of inflating into a desired shape after deployment. The side airbag device can be installed in the side part of the seat of the vehicle, and is provided with an inflator (22) having an elongated shape and an airbag including an inflatable bag-like part (20) and a partition separating the bag-like part (20). It is a partition part (for example, a partition wall part (40)) of the 1st air chamber (50) and the 2nd air chamber (60). The first air chamber (50) includes a support expansion part (52) and a protection expansion part (54), and the support expansion part (52) can be deployed along the seat side into a shape gradually expanding from the lower end toward the upper end, The protective inflatable part (54) can be deployed on the other end side of the supporting inflatable part (52), and the inflator (22) is configured to be capable of supplying gas into the supporting inflatable part (52), and the partition part At least one gas circulation hole (42h) is provided on the portion separating the support expansion part (52) of the first air chamber (50) from the second air chamber (60). The second air chamber (60) is provided below the first air chamber (50).

Description

technical field [0001] The present invention relates to a side airbag device incorporated in a side portion of a seat of a vehicle. Background technique [0002] Patent Document 1 discloses a side airbag provided on a vehicle outer side portion of a seat back of a vehicle seat. [0003] Inside the side airbag, a first flow path and a second flow path are formed. The first flow path allows the gas ejected from the gas outlet of the inflator to flow to the upper portion of the airbag that protects the occupant's head side, The second flow path allows gas to flow from the upper portion of the airbag to the lower portion of the airbag that protects the chest side of the occupant. The airbag has a structure in which gas is flowed from the inflator into the first flow path during a side collision of the vehicle to inflate and expand the upper portion of the airbag toward the side of the head, and at the same time, gas is flowed into the second airbag from the upper portion of the...

AI Technical Summary

Problems solved by technology

Since there is only a small gap between the occupant and the door, it may be difficult to inflate the lower end of the airbag into a desired shape if the lower end of the airbag is largely inflated before being deployed toward the side of the occupant's abdomen.

[0007] In addition, in the case of a side air bag deployed from the side of the seat, the side air bag flying out from the side of the seat may hit the door or The column is deployed toward the occupant side by means of its reverse movement, and it is difficult to limit the direction of deployment

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