SUSPENSION ARM FOR VEHICLE
First Claim
1. A suspension arm for a vehicle in which an arm main body formed by press forming a metal plate comprises a knuckle mounting portion on which a knuckle is mounted, a first vehicle body mounting portion that is provided inwardly of the knuckle mounting portion in a vehicle width direction and is mounted on a vehicle body, and a second vehicle body mounting portion that is provided toward a vehicle body rear side of the first vehicle body mounting portion and is mounted on the vehicle body, the suspension arm comprising:
- a first upper wall portion that extends substantially horizontally from the first vehicle body mounting portion to the second vehicle body mounting portion in a state in which the arm main body is mounted on the vehicle body;
a second upper wall portion that extends substantially horizontally from the second vehicle body mounting portion to the knuckle mounting portion in a state in which the arm main body is mounted on the vehicle body;
a third upper wall portion that extends substantially horizontally from the knuckle mounting portion to the first vehicle body mounting portion in a state in which the arm main body is mounted on the vehicle body;
a first bottom wall portion that is at a position lower than the first and second upper wall portions and connects the first and second upper wall portions;
a second bottom wall portion that is at a position lower than the second and third upper wall portions and connects the second and third upper wall portions,a first inclined projecting portion that is formed so as to bulge upward in an end part on the first vehicle body mounting portion side of the first bottom wall portion and has a height that gradually decreases in going from the first upper wall portion toward the second upper wall portion; and
a second inclined projecting portion that is formed so as to bulge upward in an end part on the first vehicle body mounting portion side of the second bottom wall portion and has a height that gradually decreases in going from the third upper wall portion toward the second upper wall portion
1 Assignment
0 Petitions
Accused Products
Abstract
When a load facing to the rear of a vehicle body acts on a knuckle mounting portion of an arm main body of a suspension arm, if the line of action of the load deviates vertically relative to the cross-sectional center of the arm main body, a moment that vertically deforms the arm main body occurs. However, since there are provided a first inclined projecting portion that is formed so as to bulge upward in an end part on a first vehicle body mounting portion side of a first bottom wall portion and has a height that gradually decreases in going from a first upper wall portion toward the second upper wall portion, and a second inclined projecting portion that is formed so as to bulge upward in an end part on the first vehicle body mounting portion side of a second bottom wall portion and has a height that gradually decreases in going from a third upper wall portion toward the second upper wall portion, it is possible to enhance the rigidity without increasing the weight of the arm main body, thus preventing deformation of the arm main body due to the load.
29 Citations
14 Claims
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1. A suspension arm for a vehicle in which an arm main body formed by press forming a metal plate comprises a knuckle mounting portion on which a knuckle is mounted, a first vehicle body mounting portion that is provided inwardly of the knuckle mounting portion in a vehicle width direction and is mounted on a vehicle body, and a second vehicle body mounting portion that is provided toward a vehicle body rear side of the first vehicle body mounting portion and is mounted on the vehicle body, the suspension arm comprising:
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a first upper wall portion that extends substantially horizontally from the first vehicle body mounting portion to the second vehicle body mounting portion in a state in which the arm main body is mounted on the vehicle body; a second upper wall portion that extends substantially horizontally from the second vehicle body mounting portion to the knuckle mounting portion in a state in which the arm main body is mounted on the vehicle body; a third upper wall portion that extends substantially horizontally from the knuckle mounting portion to the first vehicle body mounting portion in a state in which the arm main body is mounted on the vehicle body; a first bottom wall portion that is at a position lower than the first and second upper wall portions and connects the first and second upper wall portions; a second bottom wall portion that is at a position lower than the second and third upper wall portions and connects the second and third upper wall portions, a first inclined projecting portion that is formed so as to bulge upward in an end part on the first vehicle body mounting portion side of the first bottom wall portion and has a height that gradually decreases in going from the first upper wall portion toward the second upper wall portion; and a second inclined projecting portion that is formed so as to bulge upward in an end part on the first vehicle body mounting portion side of the second bottom wall portion and has a height that gradually decreases in going from the third upper wall portion toward the second upper wall portion - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A suspension arm for a vehicle in which an arm main body that is formed by press forming a metal plate comprises a knuckle mounting portion on which a knuckle is mounted and a vehicle body mounting portion that is mounted on a vehicle body, and an outer face of the vehicle body mounting portion is fixed by welding to a weld part formed at an end edge of the arm main body,
wherein the weld part of the arm main body comprises a first weld part that extends substantially horizontally in a state in which the arm main body is mounted on the vehicle body, and second and third weld parts that extend downwardly from opposite ends of the first weld part, a distance between lower ends of the second and third weld parts being set larger than a distance between upper ends thereof.
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14. A suspension arm for a vehicle comprising an arm main body that is formed by press forming a metal plate,
wherein the arm main body comprises a knuckle mounting portion on which a knuckle is mounted and first and second vehicle body mounting portions that are mounted on a vehicle body, and a concavo-convex portion is formed on a peripheral edge part of at least one of the knuckle mounting portion and the first and second vehicle body mounting portions.
Specification