Gas pressure spring for e.g. passenger car`s safety device, has metallic convoluted bellows closed with cover at its end, where convolutions of metallic convoluted bellows exhibit axial stiffness that is changeable across circumference

摘要

The spring has metallic convoluted bellows (5) closed with a cover at its end. Convolutions of the metallic convoluted bellows exhibit an axial stiffness that is changeable across the circumference. The axial stiffness provides a curved extension characteristic to the metallic convoluted bellows, where the difference of profile heights of bellow convolutions lies between ten to forty percentages.