Bracket structure in vehicle body rear portion

A bracket structure in a vehicle body rear portion, comprising:

• a rear floor panel forming a floor in a rear portion of a vehicle interior;
• a cross member disposed on the rear floor panel, and extending in a vehicle width direction;
• and
• a spare tire housing disposed on the rear floor panel, and configured to house a spare tire on a rear side of the cross member in a vehicle, wherein
• a plurality of brackets are connected to the cross member,
• the plurality of brackets include an upper bracket disposed above the rear floor panel, a first lower bracket disposed under the rear floor panel, and a second lower bracket disposed under the first lower bracket,
• the first lower bracket and the second lower bracket extend toward a rear of the vehicle from the cross member along the rear floor panel,
• the upper bracket, the first lower bracket, and the second lower bracket are disposed in such a manner as to be shifted to a right side or a left side in the vehicle width direction with respect to an axis passing through a center of the spare tire housing,
• the second lower bracket is formed in a concave shape, and a closed section is formed between the first lower bracket and the second lower bracket by superposing the first lower bracket and the second lower bracket, and
• the upper bracket is attached to a top surface of the rear floor panel, and the upper bracket and the first lower bracket are disposed so as to correspond to each other in a vertical direction.