Patent ID: 7370841

Claim:
A rocking fulcrum member, comprising: a first elastic plate portion; and a second elastic plate portion placed on planes intersecting each other to form a crisscross spring, wherein each of the first elastic plate portion and the second elastic plate portion has extensions from its one end and the other end in its longitudinal direction; the extension from the one end of the first elastic plate portion is bent at an acute angle from the first elastic plate portion, while the extension from the other end of the first elastic plate portion is bent at an obtuse angle from the first elastic plate portion; the extension from the one end of the second elastic plate portion is bent at an obtuse angle from the second elastic plate portion, while the extension from the other end of the second elastic plate portion is bent at an acute angle from the second elastic plate portion; the extension from the one end of the first elastic plate portion and the extension from the one end of the second elastic plate portion are formed as one continuous member on one plane; the extension from the other end of the first elastic plate portion and the extension from the other end of the second elastic plate portion are formed as one continuous member on one plane; and the first elastic plate portion, the extension from the one end of the first elastic plate portion, the extension from the other end of the first elastic plate portion, the second elastic plate portion, the extension from the one end of the second elastic plate portion and the extension from the other end of the second elastic plate portion are a continuous member formed by fabricating one elastic member in the form of a plate.