Suspension having leaf spring

A suspension having a leaf spring, the suspension comprising:

• a knuckle to which a wheel is coupled;
• a fixed frame positioned on a vehicle body and coupled to the knuckle through a trailing arm;
• the leaf spring having a first end portion coupled to the knuckle and having a second end portion having a variable support point;
• and
• a support unit configured to vary the variable support point on the second end portion of the leaf spring,
• wherein the support unit includes:
• a spring support positioned to be brought into contact with the leaf spring;
• and
• a spring driver coupled to the spring support and configured to apply driving force to change a position of the spring support,
• wherein the spring driver moves the position of the spring support to change the variable support point on the leaf spring, and
• wherein the trailing arm is rotatably connected to the fixed frame.