Adjustable driving device for lift transmission elements displaceable in opposition to one another

摘要

The invention relates to an adjustable driving device for lift transmission elements, displaceable in opposition to one another, in valve gears of internal combustion engines which are disconnectable or which can be switched over between different cams, it being possible for the valve gear design to be of different generic type. The present invention is explained in more detail with reference to a bucket tappet design. Support slides 5, bilaterally displaceable tangentially to the axis, on the support surfaces 5.1 of which the compression columns 4 of the outer lift transmission element 1 are supported, are arranged in the inner tappet element 2. The camshaft cam responsible for the greater lift thereby transmits its force by way of the lift transmission element 1, the inner support element 2, of the valve clearance adjusting device 3 to the valve 7. If this power flow is interrupted so that only a small valve lift occurs, the support slide 5 is displaced to the opposite stop and the compression columns 4 plunge into the free spaces 5.2. <IMAGE>