Flexible joint

In a flexible joint having a first rotating body connected to a shaft of an engine, a second rotating body coaxially connected to the first rotating body via a first rubber damper, and a third rotating body whose outer circumference is coaxially coupled with the second rotating body via a second rubber damper and whose center axis is coaxially connected to a shaft of a compressor, the second rotating body is rotatably held by a front housing of the compressor. Accordingly, eccentric load acting on the joint according to the rotation thereof is received by the housing of the compressor so that the shaft of the compressor receives lower bending moment. Further, as the first and second rubber dampers are used, a composite elastic coefficient thereof is smaller so that torque fluctuation applied to the joint is adequately absorbed.