Seatbelt buckle structure

A seatbelt buckle structure comprising:

• a buckle portion to and from which a tongue plate, through which a seatbelt is inserted, is attachable and detachable;
• a boot portion that is hollow;
• at whose distal end portion the buckle portion is installed;
• and that supports the buckle portion in an erect state by rigidity of the boot portion;
• a webbing portion that is provided at an interior of the boot portion;
• that connects a vehicle body and the buckle portion;
• that makes movement, in a vehicle vertical direction, of the boot portion possible;
• and that, when external force from above is inputted to the buckle portion, moves the boot portion together with the buckle portion downward in the vehicle vertical direction;
• and
• an elastic member that is provided at the interior of the boot portion;
• that connects the boot portion and the webbing portion;
• and at which elastic energy accumulates when external force from above is inputted to the buckle portion and the boot portion.