Upper vehicle-body structure
An upper vehicle-body structure includes a roof reinforcement having a width in a vehicle front-rear direction to serve as a bridge between a pair of roof side rails in a vehicle width direction and a reinforcement member on the roof reinforcement and diagonally extending in the vehicle front-rear direction. The brace is joined to the roof reinforcement at positions at which a front end portion and a rear end portion of the brace in the vehicle front-rear direction are offset from each other in the vehicle width direction.
1. An upper vehicle-body structure, comprising:
a pair of roof side rails extending along a vehicle front-rear direction on both of left and right sides of an upper portion of a vehicle body in a vehicle width direction;
a roof reinforcement having a width in a vehicle front-rear direction, the roof reinforcement to serve a bridge between a pair of roof side rails in a vehicle width direction; and
a brace provided on the roof reinforcement and diagonally extending in the vehicle front-rear direction, the brace being joined to the roof reinforcement at positions at which a front end portion and a rear end portion of the brace in the vehicle front-rear direction are offset from each other in the vehicle width direction,
wherein the brace is a metal flat plate fixed to the roof reinforcement.
2. The upper vehicle-body structure according to claim 1 , wherein the brace is elongated.
3. The upper vehicle-body structure according to claim 2 , wherein:
the brace includes a plurality of reinforcement members; and
the plurality of reinforcement members form a substantially X shape in plan view.
4. The upper vehicle-body structure according to claim 3 , wherein a door opening portion without a center pillar is in a vehicle side portion by each of the roof side rails on which the roof reinforcement is provided.
5. The upper vehicle-body structure according to claim 4 , wherein:
a structure body extending in a substantially up-down direction of a vehicle is provided on a rear portion of the door opening portion; and
a rear suspension member of the vehicle is provided near a lower end portion of the structure body.
6. The upper vehicle-body structure according to claim 2 , wherein a door opening portion without a center pillar is in a vehicle side portion by each of the roof side rails on which the roof reinforcement is provided.
7. The upper vehicle-body structure according to claim 6 , wherein:
a structure body extending in a substantially up-down direction of a vehicle is provided on a rear portion of the door opening portion; and
a rear suspension of the vehicle is provided near a lower end portion of the structure body.
8. The upper vehicle-body structure according to claim 1 , wherein the brace includes two elongated members that intersect.
9. The upper vehicle-body structure according to claim 8 , wherein at least one of the front end portion and the rear end portion of the two elongated members are connected along the front-rear direction.
10. The upper vehicle-body structure according to claim 9 , wherein at least one of the front end portions and the rear end portions of the two elongated members are connected along the vehicle width direction.
11. The upper vehicle-body structure according to claim 8 , wherein at least one of the front end portions and the rear end portions of the two elongated members are connected along the vehicle width direction.
12. The upper vehicle-body structure according to claim 8 , wherein the two elongated members are symmetric about the vehicle width direction.
13. The upper vehicle-body structure according to claim 8 , wherein the two elongated members are integrated.
14. The upper vehicle-body structure according to claim 8 , wherein the two elongated members are connected at a portion other than where they intersect, forming a space in the brace.
15. The upper vehicle-body structure according to claim 1 , wherein the front end portion and the rear end portion of the brace are offset by the width of the roof reinforcement.
16. The upper vehicle-body structure according to claim 1 , wherein the roof reinforcement has a concave-convex shape.
17. The upper vehicle-body structure according to claim 1 , wherein brace is fixed to a central portion of the roof reinforcement in the vehicle width direction.
18. The upper vehicle-body structure according to claim 3 , wherein the brace further includes a left side wall portion that connects end portions of the substantially X shape on a left side of the vehicle width direction in the vehicle front-rear direction and a right side wall portion that connects end portions of the substantially X shape on a right side of the vehicle width direction in the vehicle front-rear direction.
19. The upper vehicle-body structure according to claim 3 , wherein the brace further includes a front wall portion that connects front end portions of the substantially X shape in the vehicle width direction, a rear wall portion that connects rear end portions of the substantially X shape in the vehicle width direction, and a center wall portion that connects the front wall portion and the rear wall portion along the vehicle front-rear direction at an intersection of the substantially X shape.