Device for closing the input opening in the sample chamber in an x-ray fluorescence spectrometer

A method for providing a gas-tight closing of an input opening of a sample chamber of an x-ray analysis apparatus, the method comprising:

• providing a slider having a closure plate and a carriage that is configured to be displaced in forward and return lateral movements over the input opening on a linear guide arranged on a baseplate connected fixedly to the sample chamber, the closure plate being connected in an articulated manner to the carriage with deflecting elements that butt against end stops connected rigidly to the baseplate when the slider is displaced in the forward lateral movement;
• displacing the slider with a drive motor to provide said forward lateral movement on the linear guide;
• when the deflecting elements butt against the end stops, transferring the forward lateral movement of the carriage into a movement perpendicular thereto with the deflecting elements to press the closure plate over the input opening;
• and
• displacing the slider with the drive motor to provide the return lateral movement and reverse the closing of the input opening.