Valve drive tappet for internal combustion engine, with pivot unit as one-piece component of tappet with bearing surface in concave or convex spherical form

摘要

The tappet (1) is in the form of a lever with two side walls connected by a longitudinal wall. it has a pivot unit (6) with a pivot (7) for the shaft end (8) of a gas exchange valve (9). The unit is an integral component of the tappet. It may be of concave spherical shape. The pivot is held to the tappet by a clamp (22). The pivot has a projection on the lever side on which the tappet can be turned.