against a holding element fixed on the cam. In this way, the roller bodies cannot drop out of their position when the connecting rod is assembled onto the cam and disassembled therefrom. The roller bodies project in the radial direction beyond the edge of the holding element. In this way, a roller bearing is formed on the cam over which the connecting rod can be axially passed with the connecting rod eye without the roller bodies moving out of their position. The roller bodies are inseparably held on the wheel around the cam. The depth of the annular slot is greater than the spacing between the holding element and the adjacent axial ends of the roller bodies.
In a preferred embodiment, the width of the annular slot (in whicheccentric drive low. The end face of the wheel defines a lateral stop for the connecting rod. Preferably, the wheel is configured as a toothed wheel and the cam is configured as one piece with the toothed wheel. The toothed wheel is in meshing engagement with a pinion driven by the drive motor.