MEMBER FOR RESTRICTING EXPANSION OF CURTAIN AIRBAG AND STRUCTURE OF PORTION WHERE CURTAIN AIRBAG IS MOUNTED

A development restricting member 30 is configured to include a fixing section 32 attachable to a body of a vehicle above the pillar garnish, a holding section 40 opposing to the fixing section 32, and a middle connecting section 50 connecting a lower end part of the fixing section 32 and a lower end part of the holding section 40, wherein an upstanding section 42 is provided in a middle part of a base end part and a top end part of the holding section 40 to extend toward the fixing section 32, so that a folded curtain airbag is housed so as to be surrounded by the fixing section 32, the holding section 40, and the upstanding section 42.