Front vehicle-body structure of vehicle
A front vehicle-body structure of a vehicle ensures good vehicle appearance and ease in operating a bonnet without increasing the vehicle body weight. The front vehicle-body structure includes a bonnet including outer and inner panels, a hinge supporting the bonnet such that the bonnet can open and close, and a damper member urging the bonnet. The inner panel includes front and rear frame portions, and a pair of side frame portions respectively connecting left and right ends of the front and rear frame portions and each including a hinge mounting portion and a damper mounting portion for mounting the damper member frontward of the hinge mounting portion. The side frame portion includes a convex first bead portion formed partially in a curved shape between the hinge mounting portion and the damper mounting portion and extending back and forth from the hinge mounting portion to the damper mounting portion.
1. A front vehicle-body structure of a vehicle comprising:
a space formed in a front portion of a vehicle body and having an opening at a top of the space;
a bonnet including an outer panel and an inner panel attached to a back side of the outer panel;
a hinge supporting the bonnet so as to allow the bonnet to open and close relative to a top opening formed in the vehicle body; and
a damper member urging the bonnet from a closed position toward an open position,
the inner panel including a front frame portion extending in a vehicle width direction, a rear frame portion extending in the vehicle width direction rearward of the front frame portion, and a pair of side frame portions each connecting ends in the vehicle width direction of the front frame portion and the rear frame portion and each including a hinge mounting portion for mounting the hinge and a damper mounting portion for mounting the damper member frontward of the hinge mounting portion, and
the side frame portion being formed as a structure whose cross-sectional shape in front view is a substantially U-shaped cross-sectional shape or a concave cross-sectional shape extending toward an inner periphery side from an outer peripheral end thereof joined to the outer panel by hemming of the outer panel, and including a convex first bead portion partially protruding downward in the vehicle width direction of the structure and extending in a front-rear direction from the hinge mounting portion to the damper mounting portion; wherein
the damper mounting portion is provided on a vehicle-width-direction outer side of a front portion of the first bead portion,
a ball joint portion for pivotably mounting the damper member is mounted on the damper mounting portion,
the side frame portion includes, on a vehicle-width-direction outer side of the first bead portion, a convex second bead portion extending in the front-rear direction and protruding downward, and
at least a part of the damper member is disposed between the first bead portion and the second bead portion in plan view.
2. The front vehicle-body structure of the vehicle according to claim 1 , wherein
the side frame portion is formed to have a reduced vehicle-width-direction dimension from a rear end thereof to the damper mounting portion, and
a distance between the first and second bead portions in the vehicle width direction is smaller toward a front side, and the first and second bead portions are connected at front ends thereof.
3. The front vehicle-body structure of the vehicle according to claim 2 , wherein
the side frame portion includes, in front of the damper mounting portion, a fragile portion whose vertical dimension is smaller than other portions.
4. The front vehicle-body structure of the vehicle according to claim 3 , wherein
the side frame portion is provided with a reinforcement member for reinforcing the damper mounting portion.
5. The front vehicle-body structure of the vehicle according to claim 1 , wherein
the side frame portion includes, in front of the damper mounting portion, a fragile portion whose vertical dimension is smaller than other portions.
6. The front vehicle-body structure of the vehicle according to claim 1 , wherein
the side frame portion is provided with a reinforcement member for reinforcing the damper mounting portion.
7. A front vehicle-body structure of a vehicle comprising:
a space formed in a front portion of a vehicle body and having an opening at a top of the space;
a bonnet including an outer panel and an inner panel attached to a back side of the outer panel;
a hinge supporting the bonnet so as to allow the bonnet to open and close relative to a top opening formed in the vehicle body; and
a damper member urging the bonnet from a closed position toward an open position,
the inner panel including a front frame portion extending in a vehicle width direction, a rear frame portion extending in the vehicle width direction rearward of the front frame portion, and a pair of side frame portions each connecting ends in the vehicle width direction of the front frame portion and the rear frame portion and each including a hinge mounting portion for mounting the hinge and a damper mounting portion for mounting the damper member frontward of the hinge mounting portion, and
the side frame portion being formed as a structure whose cross-sectional shape in front view is a substantially U-shaped cross-sectional shape or a concave cross-sectional shape extending toward an inner periphery side from an outer peripheral end thereof joined to the outer panel by hemming of the outer panel, and including a convex first bead portion partially protruding downward in the vehicle width direction of the structure and extending in a front-rear direction from the hinge mounting portion to the damper mounting portion; wherein
the damper mounting portion is provided on a vehicle-width-direction outer side of a front portion of the first bead portion,
a ball joint portion for pivotably mounting the damper member is mounted on the damper mounting portion,
the side frame portion includes, on a vehicle-width-direction outer side of the first bead portion, a convex second bead portion extending in the front-rear direction and protruding downward,
the side frame portion is formed to have a reduced vehicle-width-direction dimension from a rear end thereof to the damper mounting portion, and
a distance between the first and second bead portions in the vehicle width direction is smaller toward a front side, and the first and second bead portions are connected at front ends thereof.
8. A front vehicle-body structure of a vehicle comprising:
a space formed in a front portion of a vehicle body and having an opening at a top of the space;
a bonnet including an outer panel and an inner panel attached to a back side of the outer panel;
a hinge supporting the bonnet so as to allow the bonnet to open and close relative to a top opening formed in the vehicle body; and
a damper member urging the bonnet from a closed position toward an open position,
the inner panel including a front frame portion extending in a vehicle width direction, a rear frame portion extending in the vehicle width direction rearward of the front frame portion, and a pair of side frame portions each connecting ends in the vehicle width direction of the front frame portion and the rear frame portion and each including a hinge mounting portion for mounting the hinge and a damper mounting portion for mounting the damper member frontward of the hinge mounting portion, and
the side frame portion being formed as a structure whose cross-sectional shape in front view is a substantially U-shaped cross-sectional shape or a concave cross-sectional shape extending toward an inner periphery side from an outer peripheral end thereof joined to the outer panel by hemming of the outer panel, and including a convex first bead portion partially protruding downward in the vehicle width direction of the structure and extending in a front-rear direction from the hinge mounting portion to the damper mounting portion; wherein
the side frame portion includes, on a vehicle-width-direction outer side of the first bead portion, a convex second bead portion extending in the front-rear direction and protruding downward,
the side frame portion is formed to have a reduced vehicle-width-direction dimension from a rear end thereof to the damper mounting portion, and
a distance between the first and second bead portions in the vehicle width direction is smaller toward a front side, and the first and second bead portions are connected at front ends thereof.
9. The front vehicle-body structure of the vehicle according to claim 5 , wherein
the side frame portion is provided with a reinforcement member for reinforcing the damper mounting portion.
10. The front vehicle-body structure of the vehicle according to claim 7 , wherein
the side frame portion includes, in front of the damper mounting portion, a fragile portion whose vertical dimension is smaller than other portions.