LEVER PLATE IN VGS-TYPE TURBO CHARGER AND METHOD FOR PRODUCING THE SAME

摘要

[Problem to be Solved] An object of the present invention is to provide a novel method of manufacturing a lever plate that is made of a material having a relatively small thickness but nonetheless has an engaging protrusion having an adequate thickness and an adequate height. A lever plate in a VGS type turbocharger according to the present invention is a lever plate that is incorporated in an exhaust guide assembly in a VGS type turbocharger. The lever plate has a fitting hole into which a shaft part of the adjustable vane is fitted formed at a position close to one end of an elongated plate main body thereof and an engaging protrusion to be engaged with the drive ring formed at the other end thereof. The engaging protrusion is formed by bending a blanking material having the shape of an elongated flat plate. The engaging protrusion is pressed in a direction of raising thereof so as to have a thickness greater than the thickness of the plate main body of the lever plate, and opposite side peripheries of the engaging protrusion are subjected to finish blanking to have an arc shape.