Patent ID: 8336909
Filing Date: 2012-12-25
Classification: B60R

Abstract:
1. A rear airbag system having advanced safety performance comprising: a rear-end collision sensor installed on a side of a car body to sense a rear-end collision; a controller outputting a control signal when an electrical signal input from the rear-end collision sensor exceeds a reference value; a seat airbag module which is mounted in a seat and an airbag cushion of the seat airbag module is inflated to protrude upwards from the seat so as to protect a rear head part of an occupant when the seat airbag module receives the control signal from the controller to activate the airbag cushion; and a support unit connected to the airbag cushion of the seat airbag module, wherein the seat airbag module includes: a hollow housing installed in the seat; an inflator installed on a side of an interior surface of the housing and generating gas when the inflator receives the control signal from the controller; and the airbag cushion which is held in the housing and inflates upwards along the interior surface of the housing out of the seat when supplied with the gas from the inflator, wherein the support unit includes: a hollow case located in a rear side of the housing and disposed in the seat along a vertical direction thereof, wherein the case includes a guide opening; and a plate which is slidably inserted into the case, is connected to the airbag cushion through the guide opening, wherein the plate protrudes upwards from the seat with the airbag cushion when the airbag cushion is inflated to protrude upwards from the seat, and supports a portion of the airbag cushion, and wherein the plate is coupled with a rear surface of the airbag cushion by sewing parts of the airbag to the plate through the guide opening.