| 摘要 |
A plate spring of a substantially circular-ring-shaped form having a substantially externally conical upper side ( 12 ) and a substantially internally conical underside ( 13 ) between which there are positioned an outer annular edge ( 14 ) and an inner annular edge ( 15 ), wherein, in the unloaded condition, the surface layer ( 17 ) of the underside ( 13 ) comprises a higher inherent compressive stress than the surface layer ( 16 ) of the upper side ( 12 ).
|
