Federelement für eine Sitzrückenlehne

摘要

A structure for attaching a frame-like spring according to the present invention, being capable of effectively reducing the number of parts, said structure comprising a reaction force frame element which is a frame-like spring is attached via lower frame portion and an upper frame portion so that a pressurization is always given in the movable range and the pressurization becomes the lowest at a predetermined position of a normal posture, especially when the a reaction force frame element is made into the attaching preparation posture that the elastic repulsive forces are accumulated rather than a normal posture, the upper attaching portions include insertion portions for allowing insertion of lower ends and engagement portions to be engaged to the lower end portions due to an elastic repulsive force when the external force is released.