Switchable component e.g. roller tappet, for valve train of internal combustion engine, has recess with snap ring running in axial section of housing such that piston engages at segment of ring by flat portion during coupling or cam stroke

摘要

The component (1) has an inner element (4) movably accommodated in a borehole (3) of a housing (2), and a coupling piston (6) running in a radial borehole (5) of the inner element. A snap ring (15) is positioned in a circular recess (14) of the housing and adjusts coupling play in interaction with a counter surface that starts from the inner element. The recess with the snap ring runs in an axial section of the housing such that the piston engages at a segment of the snap ring by a flat portion (9) during coupling or cam stroke, where the segment directly forms an engaging surface (11).