Suspension for vehicle

1. A suspension for a vehicle, comprising:

a center leaf spring;

side leaf springs respectively installed on opposing sides of the center leaf spring;

mounting brackets configured to connect the center leaf spring and the side leaf springs, respectively; and

damper bushes mounted in the mounting brackets, respectively, and configured to absorb shock.

2. The suspension of claim 1 , wherein each of the damper bushes comprises:

a hollow inner pipe;

a vane mounted on an outer surface of the inner pipe;

a mid-pipe configured to surround an outer surface of the vane and to contain fluid;

a rubber bush mounted on an outer surface of the mid-pipe, and including an elastically deformable material; and

an outer pipe rotatably mounted on an outer surface of the rubber bush, and accommodated in a corresponding one of the mounting brackets.

3. The suspension of claim 2 , wherein the fluid comprises silicon oil.

4. The suspension of claim 2 , wherein the vane comprises a plurality of blades which are radially extending on an outer surface of the vane in a circumferential direction.

5. The suspension of claim 2 , wherein each of the damper bushes further comprises a cap mounted on either end of the mid-pipe, and configured to block fluid leakage.

6. The suspension of claim 2 , wherein the inner pipe, the vane, the mid-pipe, and the outer pipe are made of aluminum.

7. The suspension of claim 1 , wherein each of the mounting brackets comprises:

a first mounting bracket connected to one of the side leaf springs, and having a corresponding one of the damper bushes mounted therein; and

a second mounting bracket connected to the center leaf spring, and fastened to the first mounting bracket by a fastener.

8. The suspension of claim 7 , wherein the first mounting bracket comprises:

a first side connector connected to one of the side leaf springs; and

a first main connector connected to the first side connector, having the corresponding one of the damper bushes mounted therein, and fastened to the second mounting bracket by the fastener.

9. The suspension of claim 8 , wherein the first main connector comprises:

a first main fastener fastened to the second mounting bracket by the fastener; and

a first damper accommodation part having the corresponding one of the damper bushes mounted therein.

10. The suspension of claim 9 , wherein an elastically deformable mounting bush, through which the fastener is fastened, is mounted in the first main fastener.

11. The suspension of claim 7 , wherein the second mounting bracket comprises:

a second center connector connected to the center leaf spring; and

a second main connector connected to the second center connector, and fastened to the first mounting bracket by the fastener.

12. The suspension of claim 7 , wherein the first mounting bracket and the second mounting bracket are made of aluminum.

13. The suspension of claim 1 , wherein the center leaf spring and the side leaf springs are made of Glass Fiber Reinforced Plastic (GFRP).