Gas spring device for adjusting the height of an office chair

A gas spring device for adjusting the height of an office chair, the gas spring device comprising

• a gas spring, arranged and equipped for height adjustment of the office chair by means of a movable component of the gas spring,
• at least one sensor element arranged on the gas spring device, configured to detect a load on the gas spring device and to generate at least one sensor signal depending on the detected load, and
• an electronic circuit arranged to generate usage data depending on the at least one sensor signal, the usage data representing one or more facts about a usage of the office chair;
• wherein
• the at least one sensor element comprises at least one of the following:
• a force sensor, which is configured to detect a force acting on the gas spring in the direction of a longitudinal axis of the gas spring and to generate a force signal depending on the detected force;
• at least one deformation sensor which is configured to detect a deformation of the gas spring device and to generate a deformation signal depending on the detected deformation.