To prevent a resin material from penetrating into a tapped hole from its space without pressing a closed-end nut to an insert member by a mold or the like when the insert member and the closed-end nut are integrally fixed to a resin component by insert molding.
The resin material is prevented from penetrating into the tapped hole 28 between a cap nut 22 and a connection terminal 16 during the insert molding due to closing the space to the connection terminal 16 extended over all perimeter by providing a fitting protrusion part 26 to the tapped hole opening part of the cap nut 22, and being pressed in a bolt insertion hole 16h and integrally fixing. Since the protrusion dimension t of the fitting protrusion part 26 is within the limits of 80% to 95% of the wall thickness of the connection terminal 16, there is no possibility that the tip of the fitting protrusion part 26 results in abutting on an external electrode 18 due to the elastic deformation of the connection terminal 16 or the like, and on the other hand, the problem that the cap nut 22 is pulled out from the bolt insertion hole 16h and a position is shifted is satisfactorily prevented.
SONE YASUHIRO
ARAI YOSHIHIDE
IMAI MAKOTO
TOYOTA MOTOR CORP
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