In a bus bar unit formed by performing secondary insert molding on a primary molded member, which is formed by performing primary insert molding on a plurality of primary molding bus bars, and a plurality of secondary molding bus bars such that the primary molding bus bars and the secondary molding bus bars are arranged in a bus bar axial direction, each primary molding bus bar includes an insertion hole into which a support pin for supporting another primary molding bus bar during the primary insert molding is inserted in the bus bar axial direction, and a through hole through which an insulating resin can pass during the secondary insert molding is formed in each secondary molding bus bar in a position opposing the insertion hole.
1. A bus bar unit formed by performing secondary insert molding on a primary molded member, which is formed by performing primary insert molding on a plurality of primary molding bus bars, and a plurality of secondary molding bus bars such that the primary molding bus bars and the secondary molding bus bars are arranged in a bus bar axial direction,
wherein each primary molding bus bar includes an insertion hole into which a support pin for supporting another primary molding bus bar during the primary insert molding is inserted in the bus bar axial direction, and
a through hole through which an insulating resin can pass during the secondary insert molding is formed in each secondary molding bus bar in a position opposing the insertion hole.
2. The bus bar unit as defined in claim 1 , wherein the plurality of primary molding bus bars are comprised of a first bus bar and a second bus bar,
the plurality of secondary molding bus bars are comprised of a third bus bar disposed on a first bus bar side end portion of the primary molded member, and a fourth bus bar disposed on a second bus bar side end portion of the primary molded member,
the first bus bar includes a first bus bar insertion hole into which a support pin for supporting the second bus bar during the primary insert molding is inserted,
the second bus bar includes a second bus bar insertion hole into which a support pin for supporting the first bus bar during the primary insert molding is inserted,
a third bus bar through hole through which the insulating resin can pass during the secondary insert molding is formed in the third bus bar in a position opposing the first bus bar insertion hole, and
a fourth bus bar through hole through which the insulating resin can pass during the secondary insert molding is formed in the fourth bus bar in a position opposing the second bus bar insertion hole.
3. The bus bar unit as defined in claim 2 , wherein the first bus bar insertion hole and the third bus bar through hole are disposed to deviate from the second bus bar insertion hole and the fourth bus bar through hole in a bus bar circumferential direction.