| 摘要 |
A bus bar base member 55W is integrally joined to a holder body 51 by insert molding, thereby forming a bus bar structure 50, and the bus bar base member 55W is severed at a portion thereof into a plurality of bus bars. One side (surface) of an interconnecting portion 56 is exposed at those regions, corresponding respectively to punching holes 54, and those regions, each disposed between the adjacent punching holes 54, at an entire area thereof to provide an entire exposure surface 56A. when there is used a die 71 adapted to be held against this exposed surface, there is no need to form any convex portion of a low strength on the die 71.
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