Abstract: An airbag includes a chamber that expands due to gas being introduced at a time of deployment and a non-expanding area that does not expand at the time of deployment, in which the airbag deploys by gas being introduced into the chamber. A first portion inside the chamber that is located around the non-expanding area includes a tip end portion that is closed, and at the time of deployment, the tip end portion applies a load to and becomes in contact with a second portion of the chamber that is located around the non-expanding area and that faces the tip end portion.

Abstract: An airbag includes a chamber that expands due to gas being introduced at a time of deployment and a non-expanding area that does not expand at the time of deployment, in which the airbag deploys by gas being introduced into the chamber. A first portion inside the chamber that is located around the non-expanding area includes a tip end portion that is closed, and at the time of deployment, the tip end portion applies a load to and becomes in contact with a second portion of the chamber that is located around the non-expanding area and that faces the tip end portion.

Abstract: A battery holding structure includes a battery having a brim, a carrier having a main body accommodating the battery and a flange extending outward from an upper end of the main body, and a clamp for fixing the battery to the carrier. An upper surface of the flange is an inclined surface that extends downward and outward. The clamp includes a first contacting part that comes into contact with the inclined surface, a first standing part standing from the first contacting part, and a fastening part to be fastened to the flange. A normal line of the inclined surface passing through a contact point between the inclined surface and the first contacting part passes inside a point where the fastening part is fixed to the flange so as to be positioned on a battery side.