Screw-nut assembly for linear setting member, e.g. for hospital bed, has main nut and safety nut engaged with each other by elastic force

摘要

The screw-nut assembly for a setting member has a screw (12), a main nut (13) and a safety nut engaged with the main nut. The main nut and the safety nut are engaged with each other by an elastic force. The main nut may be made of plastic and the safety nut of metal. The main nut may have a receiving part for the safety nut.