Patent attributes
A knuckle is formed by a knuckle body and a lower arm support bracket fastened to front and rear fastening portions provided in a lower portion of the knuckle body with front and rear bolts. When the knuckle bumps from a normal position, an angle of a line connecting fastening surfaces of the front and rear fastening portions moves closer to the horizontal. Thus, if a vehicle body leans outward in a turning direction by centrifugal force caused by turning of a vehicle and a turning outside wheel thus bumps, and a turning lateral force acting inward in the turning direction is applied to a ground contact point of the turning outside wheel, a difference between distances from a road surface to the fastening surfaces of the front and rear fastening portions is reduced when a compression load of a lower arm against the turning lateral force is applied to the lower arm support bracket, thereby reducing a difference between loads applied to the front and rear bolts placed in the fastening surfaces to provide uniform durability.
