Side sill bracket and side sill assembly for vehicle including the same

A side sill assembly for a vehicle, the side sill assembly comprising:

• a side sill inner and a side sill outer including an upper end portion and a lower end portion connected to the side sill inner;
• a reinforcement member disposed between a side sill internal and the side sill outer in a longitudinal direction of the vehicle and fastened to the side sill internal;
• and
• a side sill bracket mounted between the side sill outer and the reinforcement member and configured to support the side sill outer and the reinforcement member between the side sill outer and the reinforcement member,
• wherein a foaming member is attached to the side sill bracket, and the foaming member fills a gap between the side sill bracket and the reinforcement member, and
• wherein to form a gap with the reinforcement member, the foaming member is attached to the side sill bracket and then foamed to fill the gap between the side sill bracket and the reinforcement member.