An energy storing spring joint (100) for use between two parts movable with respect to each other and joined by the energy storingspring joint is capable of storing energy in such a way that energy is stored in a displacement path and is released in very precise and predetermined manner, with a variable force over the path of displacement, when the parts move in the opposite or backward direction in the path of displacement. At least one energy storing member (50) or at least two energy storing members (50) connected sequentially or at least two different energy storing members (50) connected in parallel are mounted in or on the energy storing spring joint (100) and may be moved by or loaded with energy when one of both parts (30, 40) is moved relative to the other part. The energy storing member(s) (50) may be locked against releasing their energy.