Abstract: A lift-up mechanism is provided with a link member with one end thereof being supported rotatably on a movable bracket for holding a movable columnar member, and the other one end thereof being disposed to be engaged with and removed from a fixing bracket. The link member selectively provides a hold state for engaging the link member with the fixing bracket at a rear part of the vehicle body to hold the movable bracket at an initial position or a lift-up position, and a release state for releasing its engagement. A spring member is disposed between the fixing bracket and the movable bracket, with component forces of its biasing force biasing the movable bracket in a direction to be lifted up from the fixing bracket, and biasing the link member in a direction to be engaged with the fixing bracket.

Abstract: The present invention provides a rear suspension system for vehicles that effects suitable toe-in during braking and/or turning. The rear suspension system includes a lower arm mounted to a vehicle frame, the lower arm being displaced when receiving an external force; a mounting rod, one end of which is hingedly connected to one side of the lower arm; a wheel mounting unit, one end of which is connected to the mounting rod, a wheel being mounted on the wheel mounting unit; and a lever unit for rotating the mounting rod when the lower arm is displaced toward a rear of the vehicle frame.