Abstract
The Curtain Side Airbag（CSA）is the supplemental restraint system for the occupant head protection during the side impact accidents. In Japan, pole side impact regulation will be effective at September 2018. CSA is one of the items for satisfying the pole side impact regulation, so most vehicles will be equipped with CSAs. Most CSAs protect not only front seat occupants but also rear seat occupants. So when CSA is deployed, there is a possibility that CSA influence child occupant seated in Child Restraint System（CRS）fixed in rear seat. However, the influence of CSA to child occupants seated in CRS has not studied so much. In this study, we conducted side impact tests based on the specifications of UN Regulation No.95 except for the installing CRS and Q3s dummy at rear seat. To investigate the influence of CSA for child occupant seated in CRS, these tests were conducted for struck vehicles with and without CSA for two types of vehicles. In this test series, we confirmed that the CSA was deployed between dummy heads and CRS side wings in both vehicles. As for the head injury measures, those in vehicles with CSA were smaller than those in vehicles without CSA. As for the neck injury measures, the lateral moments in the vehicles with CSA were larger than those in vehicles without CSA. Extension forces in the vehicles with CSA were smaller than those in vehicles without CSA. So in this research, CSA was effective to protect the child occupant head seated in CRS installed at rear seat. However, as for the neck injury, there were both cases that CSA protected and CSA attacked. So it is necessary to research more.
