Vehicle rear structure

1 . A vehicle rear structure, comprising:

first and second rear component members disposed at intervals in a vehicle width direction;

first and second rear side members disposed at intervals in the vehicle width direction, and extending respectively from rear ends of the first and second rear component members toward a rear side of a vehicle;

a cross connection member connecting the first and second rear component members to each other; and

first and second vertical posts, wherein

each of the first and second rear component members is a hollow member in which a main body portion, a tower portion, and a suspension member portion are integrally cast, wherein

the main body portion has a front end connected to a rear pillar and a rear end connected to a corresponding one of the first and second rear side members,

the tower portion has a tower shape opened toward a lower side of the vehicle so as to receive a part of a suspension device, and extends from the main body portion toward an upper side of the vehicle,

the suspension member portion supports the suspension device, and extends from the main body portion toward the lower side of the vehicle, and

the suspension member portion has a front end connected to a rocker,

the cross connection member includes a connecting portion and first and second arm portions, wherein

the connecting portion is disposed rearward of the first and second rear component members and extends in the vehicle width direction,

the first and second arm portions extend respectively from first and second ends of the connecting portion in the vehicle width direction toward a front side of the vehicle, and

the first arm portion is connected to the tower portion of the first rear component member, and the second arm portion is connected to the tower portion of the second rear component member,

the cross connection member has an approximately U-shaped shape convex toward the rear side in a plan view of the vehicle rear structure, and

the first vertical post vertically connects the first arm portion and the first rear side member, and the second vertical post vertically connects the second arm portion and the second rear side member.

2 . The vehicle rear structure according to claim 1 , wherein

the first rear side member extends from the rear end of the main body portion of the first rear component member toward the rear side of the vehicle,

the second rear side member extends from the rear end of the main body portion of the second rear component member toward the rear side of the vehicle, and

in a side view of the vehicle,

a rectangular ring shape is formed by the first rear side member, the first vertical post, the first arm portion, and the tower portion of the first rear component member, and

a further rectangular ring shape is formed by the second rear side member, the second vertical post, the second arm portion, and the tower portion of the second rear component member.

3 . The vehicle rear structure according to claim 1 , wherein

a rear end of each of the first and second rear side members is positioned rearward of a rear end of the cross connection member.

4 . The vehicle rear structure according to claim 1 , wherein

each arm portion of the first and second arm portions is inclined with respect to a corresponding rear side member of the first and second rear side members in the plan view such that

a front end of the arm portion is positioned at an outer side in the vehicle width direction with respect to the corresponding rear side member and

a rear end of the arm portion is positioned at an inner side in the vehicle width direction with respect to the corresponding rear side member, and

the first vertical post is disposed at a position where the first arm portion and the first rear side member intersect with each other in the plan view, and the second vertical post is disposed at a position where the second arm portion and the second rear side member intersect with each other in the plan view.

5 . The vehicle rear structure according to claim 4 , further comprising:

an access opening in communication with a luggage space; and

a rear door for opening and closing the access opening, wherein

the access opening extends in an approximately horizontal direction at a height substantially equal to that of the cross connection member,

the cross connection member surrounds a portion of a peripheral edge of the access opening,

the rear door is disposed above the cross connection member, and

the first and second rear side members and the cross connection member are cylindrical extruded members.