Patent ID: 6918276

Claim:
A control device for a lock mechanism, in particular a lock mechanism with a cylinder, comprising a housing, a hollow hand knob rotatably mounted on the housing for rotating at least at an angle, the hand knob having a far end with teeth disposed inside the housing, the far end being movable between a non-pressed and a pressed position, an electric motor in the hand knob coupled to the housing comprising a drive shaft disposed in the housing, a mesh element mounted in the housing in a rotatable manner comprising meshing teeth for meshing with a key part of the lock mechanism, a movable gear wheel axially movable by the hand knob, at least one gear transmission wheel coupling the hand knob with the teeth to the meshing teeth of the mesh element in one position, and in another position detaching the teeth of the hand knob from the meshing teeth of the mesh element and pushing the movable gear wheel into a position for coupling the drive shaft of the motor to the meshing teeth of the mesh element, and wherein the movable gear wheel detaches the drive shaft of the motor from the meshing teeth of the mesh element in said one position.