Spring system for a pivoting rear door of a vehicle

摘要

Spring system (1) for a pivoting flap, especially a tailgate of a motor vehicle, comprises at least one gas pressure spring (2) acting on the car body at one end and on the flap at the other end a distance away from the horizontal pivoting axis of the flap. At least one helical spring (6, 7) exclusively surrounds a section of a piston rod (4) protruding out of the cylinder (3) of the gas pressure spring. The helical spring is supported directly or indirectly on the end face of the cylinder of the gas pressure spring. Preferred Features: At least one helical spring has a greater spring constant than the gas pressure spring. Two intertwined helical springs surround the piston rod protruding out of the cylinder of the gas pressure spring. The two helical springs have different lengths in the axial direction of the piston rod.