Torsion spring for storing braking energy for acceleration and energy-generation process of vehicle, has hollow bodies forming spring layers that are arranged at distance to each other, such that layers are rotatable around axis of bodies

摘要

The spring has tubular hollow bodies (21) arranged coaxial to each other and forming spring layers (22). The spring layers are arranged at a distance to each other in such a manner that the spring layers are rotatable around a common axis (25) of the hollow bodies. Joints are formed at the hollow bodies, where the spring is made from fiber-reinforced composite material e.g. textile fiber, glass fiber, mineral fiber, plastic fiber, metal fiber or Kevlar(RTM: para-aramid synthetic fiber), having matrix material e.g. plastic, metal or ceramics. An independent claim is also included for a method for manufacturing a torsion spring.