Switchable lever for a valve drive of an internal combustion engine

Abstract

The invention concerns a switchable lever () for a valve train of an internal combustion engine, said lever () comprising on one end (), a bearing () for enabling a pivotal support of said lever () and, on another end (), a support () for a gas exchange valve, a crossbar () of the lever () comprising a recess () comprising two cam rollers () which are seated on an axle () mounted in bores () of side walls () of the lever () and displaceable in axial direction, a hollow axle () arranged on said axle () extending inwards out of the bore () of the first side wall (), a first one of the cam rollers () being guided, axially fixed on said hollow axle () in front of an inner side () of the first side wall (), said first cam roller () serving for a permanent contact of a first low lift cam () of a cam assembly (), a second one of the cam rollers () being axially fixed on said axle () and being displaceable by said axle () into two positions, a first one of said positions serving to switch to a high valve lift during which the second cam roller () can be displaced through said axle () into a central position in the recess (), so that a contact of a high lift cam () of the cam assembly () is enabled, a second one of said positions serving to switch off the high valve lift during which the second cam roller () can be displaced through the axle () into a position in front of the second side wall (), so that a contact of a further low lift cam () of the cam assembly () is enabled.