Patent ID: 11890906
Assignee: HYUNDAI MOTOR COMPANY
Field: Mechanical elements (Mechanical engineering)
Classification: CPC B  F | IPC B  F

Claim 3:
4. A vehicle suspension system comprising:
a subframe of a vehicle;
a pair of axles mounted on opposite wheels of the vehicle; and
a vehicle suspension spring device provided to connect the pair of axles and the subframe;
wherein the vehicle suspension spring device includes:
a leaf spring unit having a pair of first leaf springs, a second leaf spring provided to connect the pair of first leaf springs and disposed in a lateral direction of the vehicle, and a pair of connection parts provided to connect the first leaf springs and the second leaf spring;
a pair of first coupling parts provided at outer ends of the pair of first leaf springs to be rotatably coupled to the axle;
a pair of second coupling parts provided between the first leaf springs and the second leaf spring to be rotatably coupled to the subframe,
wherein a connection part of the pair of connection parts includes a pair of connection members provided at ends of the first leaf spring and the second leaf spring corresponding to each other and coupled to each other, and a fastening member for coupling the connection members,
wherein the fastening member is fastened in a front-rear direction of the vehicle to couple the connection members,
wherein an elastic body is provided to elastically support the connection members in the front-rear direction of the vehicle, and includes a first rubber bushing installed in the connection part to support the fastening member,
wherein a rotation shaft is coupled to the subframe in the front-rear direction of the vehicle, and
wherein the second coupling part includes a second rubber bushing provided to rotatably support the rotation shaft, and a bushing coupling hole provided on the connection part so that the second rubber bushing is coupled.