PURPOSE: To prevent both members from separating from each other by making a penetrating direction of a slit in a direction different from a tensile direction to separate a 1st member and a 2nd member from each other at the time of bending a projecting end part of a tab projecting from the slit.

CONSTITUTION: Plural tongue-like tabs 1a projecting from an end surface 1b are provided on one end side and the other end side of a blade 1 as a 1st member. Further, on a shell 2 as a 2nd member, the same number of slits 2a inserted with respective tabs 2a are penetrated. The penetrating direction of each tab 2 is directed to the direction Y different from the direction Z of a tensile force that the blade 1 and the shell 2 are separated from each other (thickness direction of the shell 2), that is, in the direction at an angle of to the direction Z. When a projecting end part 1b of each tab 1a protruded from each slit 2a is bent while applying an ironing force directed toward its tip end after inserting each tab 1a into each slit 2a the blade 1 is fixed at an acute angle θ degree to the shell.