Jordan and Hamburg LLP
Coil spring
A coil spring has a spring wire that is wound in a coil shape and whose sectional outer basic shape is circular and flat faces are formed between coil inner and outer diameter sections of a sectional outer shape of the spring wire, wherein a flattening T/W of the sectional outer shape with the flat faces in the coil axis direction is set so that a stress ratio is equal to or lower than a stress ratio of a coil spring whose sectional outer shape is circular.
NHK Spring Co., Ltd.
F F
F16F F16F
inventional inventional
Nobuharu Hirotaka Takeshi Jinetsu
Kato Yamada Yabushita Kano