Double wishbone suspension

Abstract

A double wishbone suspension has a carrier, an upper-arm, a lower arm, a lateral link, and a connecting part, etc. The carrier supports a wheel of a vehicle. An inside end of the upper-arm is coupled to a frame of the vehicle, and an outside end of the upper-arm is coupled to a lower end of the carrier. Two inside ends of the lower-arm are coupled to the frame of the vehicle, and an outside end of the lower-arm is coupled to a lower end of the carrier. Two inside ends are separated in the front-rear direction of the vehicle. An inside end of the lateral link is coupled to the frame of the vehicle, and an outside end of the lateral link is coupled to the carrier at a point offset from the axis of the wheel in the front-rear direction of the vehicle. The connecting part is between the carrier and the lower-arm so that the carrier can move in the front-rear direction of the vehicle relatively to the lower-arm. The connecting part includes two rigid parts and a rubber bush. The rubber bush is between the two rigid parts, and the rubber bush is elastically deformable. Since the structure of this suspension is simple, a cost of the suspension is low and a reliability of the suspension is high. Furthermore, the suspension can be adopted to a vehicle having a four-wheel-steering mechanism.