Anti-deformation device for driving piece of clutch

The utility model relates to an anti-deformation device for driving pieces of clutches, which belongs to the technical field of automobiles. The utility model is composed of a pressure plate widened on a pressing ear and an anti-deformation rivet. The utility model is characterized in that the width of the gap of the pressure plate ear widened on the pressure plate and the anti-deformation rivet is alpha, the alpha takes three mm to four mm, the small end of the anti-deformation rivet and the riveted point of a transmission sheet are all provided with an anti-rotation non-round cross section, the other end of the anti-deformation rivet is provide with the big end which can prevent the pressing plate from ejecting, and the width of the protruding side of the big end is larger than the alpha. The utility model has the advantages that the pressure plate can not be led to be desquamated and suspended after receiving the limitation of the anti-deformation rivet in the process of transportation, and the functions of transmission sheet protecting and no generation of plastic deformation can be played.