Switchable drag lever for a valve train of an internal combustion engine u. Method for mounting a switchable rocker arm

摘要

Switchable drag lever (1) for a valve train of an internal combustion engine, wherein the drag lever (1) consists of an outer lever (3) and between the arms (2) extending inner lever (4). The outer lever (3) is penetrated in its end region (5) by a transverse axis (6) on which the inner lever (4) with its legs (7) is mounted so as to be able to pivot relative to the outer lever (3). The levers (3, 4) are connected to each other via coupling means so that when coupling a large and decoupling a smaller valve lift is transmitted. The transverse axis (6) is at least surrounded by a torsion spring (13) as a lost-motion spring whose one end (14) against a stop (15) of the outer lever (3) and the other end (16) against a stop (17 ) of the inner lever (4) is tensioned. Furthermore, a method for mounting a switchable drag lever (1) is proposed.