PURPOSE: To provide a drive plate assembly body which is hardly broken by the operation.

CONSTITUTION: A drive plate assembly body 1 installed between the crankshaft of an engine and a torque converter 4 is equipped with a drive plate 2 and a spring plate 3, and the inner peripheral part of the drive plate 2 is installed on the crankshaft, and one edge part of the spring plate 3 is fixed on the outer peripheral part of the drive plate 2, and the other edge part is installed on the torque converter 4.