Valve mechanism control device and method and process for fixing return spring device

The present invention relates to a valve train control device for controlling a variable valve train associated with an internal combustion engine, via which the maximum valve lift of at least one valve of the internal combustion engine is preset through a switching device, and the switching device can switch at least in the first Switch between the position and the second switching position, the valve mechanism control device has: a thrust element for switching the first and second switching positions through an operating movement; A return spring device that resists operating movement in at least one operating direction has a first support element fixed on a thrust element, a second support element connected to the support member that is axially movable relative to it, and a second support element connected to the support member. A return spring is operatively arranged between the second support elements and provides a return force, and the thrust element has a circumferentially closed through opening. Furthermore, the invention relates to a method for fixing such a return spring device

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