Patent ID: 8240687
Filing Date: 2012-08-14
Classification: B60G,B62D,F16C

Abstract:
1. A double-joint wheel suspension system for a steerable wheel, comprising: a knuckle rotatively supporting a wheel, and configured to turn around an imaginary king pin axis; a first arm having one end connected to a vehicle body member and another end connected to an upper or lower part of the knuckle via a first ball joint so as to swingably support the knuckle with respect to a vehicle body; and a second arm having one end connected to a vehicle body member and another end connected a part of the knuckle adjacent to the first ball joint via a second ball joint so as to swingably support the knuckle with respect to the vehicle body in cooperation with the first arm; wherein the knuckle is provided with a stud bracket retaining a ball stud of the first ball joint and a ball stud of the second ball joint; wherein the ball stud of the first ball joint extends from an upper part of the stud bracket, and the ball stud of the second ball joint extends from a lower part of the stud bracket; and the ball studs are integrally formed with the stud bracket by forging the stud bracket with the ball studs, by casting the stud bracket with the ball studs, or by threading the ball studs into the stud bracket; wherein ends of the first and second ball joints opposite to the ball studs are disposed entirely within the stud bracket.