Side vehicle-body structure of vehicle

1. A side vehicle-body structure of a vehicle, comprising a center pillar which includes a pillar outer panel, a pillar inner panel, and a pillar reinforcement which is provided between the pillar outer panel and the pillar inner panel,

wherein said pillar reinforcement comprises an upper part and an lower part, a boundary line of the upper and lower parts of the pillar reinforcement being positioned below a middle level of the pillar reinforcement in a vertical direction of a vehicle body,

wherein each of the upper and lower parts of the pillar reinforcement includes a side wall portion which extends along a side face of the vehicle body and a pair of vertical wall portions which extend inwardly in a vehicle width direction from front and rear end portions of the side wall portion, and

wherein at least one of the pair of vertical wall portions of said lower part of the pillar reinforcement is slant relative to the vehicle width direction so that the distance between the pair of vertical wall portions becomes wider toward an inward direction in the vehicle width direction, a slant angle of said at least one of the pair of vertical wall portions of the lower part of the pillar reinforcement being greater than that of the vertical portions of the upper part of the pillar reinforcement.

2. The side vehicle-body structure of a vehicle of claim 1 , wherein at least one of said pair of vertical wall portions of the lower part of the pillar reinforcement comprises a base portion which extends inwardly in the vehicle width direction from said side wall portion, a slant portion which extends obliquely forward or rearward from the base portion, and a corner portion which formed between the base portion and the slant portion.

3. The side vehicle-body structure of a vehicle of claim 1 , wherein a hinge attaching portion to which a door hinge of a rear side door is attached is provided at the upper part of the pillar reinforcement.

4. The side vehicle-body structure of a vehicle of claim 3 , wherein said hinge attaching portion includes a lower hinge-attaching portion which is provided near a lower end portion of the upper part of the pillar reinforcement for attachment of a lower door hinge of the rear side door, and a bend promoting portion which is bent at a vehicle side crash to promote bending of the pillar reinforcement is formed at a position which is located above said lower hinge-attaching portion.

5. The side vehicle-body structure of a vehicle of claim 1 , wherein a lower end portion of said center pillar is connected to a side sill which extends in a vehicle longitudinal direction, and a deformation promoting portion to promote deformation of the side sill when the center pillar receives an impact load of a vehicle side crash is provided at a connection portion of the center pillar to the side sill.

6. The side vehicle-body structure of a vehicle of claim 5 , wherein said deformation promoting portion comprises a concave which is formed at an upper face of a reinforcement of the side sill.

7. The side vehicle-body structure of a vehicle of claim 5 , wherein said deformation promoting portion comprises an opening which is formed at an upper face of a reinforcement of the side sill.

8. The side vehicle-body structure of a vehicle of claim 7 , wherein said opening is of a quadrilateral shape, a pair of sides of which extends in a vehicle width direction and the other pair of sides of which extends in a vehicle longitudinal direction.

9. The side vehicle-body structure of a vehicle of claim 1 , wherein said pillar reinforcement is a press member which is formed through a thermal pressing.

10. A side vehicle-body structure of a vehicle, comprising a center pillar which includes a pillar outer panel, a pillar inner panel, and a pillar reinforcement which is provided between the pillar outer panel and the pillar inner panel,

wherein said pillar reinforcement comprises an upper part and an lower part, a boundary line of the upper and lower parts of the pillar reinforcement being positioned below a middle level of the pillar reinforcement in a vertical direction of a vehicle body,

wherein each of the upper and lower parts of the pillar reinforcement includes a side wall portion which extends along a side face of the vehicle body and a pair of vertical wall portions which extend inwardly in a vehicle width direction from front and rear end portions of the side wall portion,

wherein at least one of the pair of vertical wall portions of said lower part of the pillar reinforcement is slant relative to the vehicle width direction so that the distance between the pair of vertical wall portions becomes wider toward an inward direction in the vehicle width direction, a slant angle of said at least one of the pair of vertical wall portions of the lower part of the pillar reinforcement being greater than that of the vertical portions of the upper part of the pillar reinforcement,

wherein at least one of said pair of vertical wall portions of the lower part of the pillar reinforcement comprises a base portion which extends inwardly in the vehicle width direction from said side wall portion, a slant portion which extends obliquely forward or rearward from the base portion, and a corner portion which formed between the base portion and the slant portion, and

wherein a hinge attaching portion to which a door hinge of a rear side door is attached is provided at the upper part of the pillar reinforcement.

11. A side vehicle-body structure of a vehicle, comprising a center pillar which includes a pillar outer panel, a pillar inner panel, and a pillar reinforcement which is provided between the pillar outer panel and the pillar inner panel,

wherein said pillar reinforcement comprises an upper part and an lower part, a boundary line of the upper and lower parts of the pillar reinforcement being positioned below a middle level of the pillar reinforcement in a vertical direction of a vehicle body,

wherein each of the upper and lower parts of the pillar reinforcement includes a side wall portion which extends along a side face of the vehicle body and a pair of vertical wall portions which extend inwardly in a vehicle width direction from front and rear end portions of the side wall portion,

wherein at least one of the pair of vertical wall portions of said lower part of the pillar reinforcement is slant relative to the vehicle width direction so that the distance between the pair of vertical wall portions becomes wider toward an inward direction in the vehicle width direction, a slant angle of said at least one of the pair of vertical wall portions of the lower part of the pillar reinforcement being greater than that of the vertical portions of the upper part of the pillar reinforcement,

wherein at least one of said pair of vertical wall portions of the lower part of the pillar reinforcement comprises a base portion which extends inwardly in the vehicle width direction from said side wall portion, a slant portion which extends obliquely forward or rearward from the base portion, and a corner portion which formed between the base portion and the slant portion,

wherein a hinge attaching portion to which a door hinge of a rear side door is attached is provided at the upper part of the pillar reinforcement, and

wherein said hinge attaching portion includes a lower hinge-attaching portion which is provided near a lower end portion of the upper part of the pillar reinforcement for attachment of a lower door hinge of the rear side door, and a bend promoting portion which is bent at a vehicle side crash to promote bending of the pillar reinforcement is formed at a position which is located above said lower hinge-attaching portion.