The utility model provides a become flat spring structure of rigidity, including a slice total length reed, total length reed one end kickup be equipped with grasswort no. 1, other end kickup or downwarping to be equipped with the blotter on the other end, the centre of total length reed is straight section no. 1, is equipped with the centre bolt hole in the straight section no. 1 to be fixed with half long reed of a slice through centre bolt and nut, the one end of half long reed is straight section two, and other end kickup is equipped with grasswort no. 2, wherein a straight section peaceful straight section no. 2 is equipped with the gasket through centre bolt and nut fixed joint, the straight section of the one and half long reed of straight section of total length reed between two. The utility model discloses lieutenant general's total length reed fuses with half long reed is in the same place, forms main spring and auxiliary spring, forms simple structure's flat spring structure, not only possess the characteristic that becomes rigidity, has alleviateed the plate spring assembly quality moreover, realizes the lightweight.