Bus bar unit, rotary electric machine having the same, and manufacturing method of bus bar unit

A bus bar unit, comprising:

• a plurality of first bus bars arranged to be laminated, the first bus bars respectively having a conductivity, each of the first bus bars having a hole part;
• an insulating member interposed between the first bus bars, the insulating member having an insulating property, the insulating member having a hole part;
• a positioning member formed by an insulating resin, wherein the positioning member includes
• an annular insulating part having an annular shape, and having a first surface facing the first bus bars and a second surface opposite to the first surface, the annular insulating part being stacked in a direction of laminating the first bus bars,
• a pin protruding from the first surface of the annular insulating part in a first direction parallel to the direction of laminating the first bus bars, the pin being inserted through the hole parts of the first bus bars and the hole part of the insulating member, and
• a restricting part having a convex shape, and extending outward in a radial direction of the annular insulating part, and including a plurality of protruding parts that protrude from the second surface of the annular insulating part in a second direction opposite and parallel to the first direction;
• a second bus bar having a conductivity, being disposed at a second surface side of the annular insulating part, and abutting against the protruding parts of the restricting part, wherein the second bus bar includes
• an annular conductive part having an annular shape, and
• a feeding terminal extending outward in a radial direction of the annular conductive part, the feeding terminal being fitted between an adjacent two of the protruding parts of the restricting part;
• and
• a fixing part provided at a tip end of the pin, the fixing part being configured to fix the first bus bars and the insulating member.