A method for insert molding a terminal for a brushless motor, the method comprising: preparing four ring-shaped bus rings (11U, 11V, 11W, 11C) each having a predetermined number of positioning holes (15A, 15B, 15C) arranged in a circumferential direction of the bus ring (11U, 11V, 11W, 11C); characterised by preparing a plurality of holding pins (21; 29A-29D; 31A-31D) each having positioning step portions (25A, 25B, 25C) having mutually different diameters and arranged at predetermined intervals in an axial direction of the holding pin (21; 29A-29D; 31A-31D) so that the smaller diameters are positioned closer to a tip of the holding pin (21; 29A-29D; 31A-31D); stacking the four bus rings (11U, 11V, 11W, 11C) at predetermined intervals in axial directions of the bus rings (11U, 11V, 11W, 11C) by inserting the holding pins into the positioning holes (15A, 15B, 15C) of the bus rings (11U, 11V, 11W, 11C) and by placing corresponding bus rings of the four bus rings (11U, 11V, 11W, 11C) on tip surfaces of respective holding pins (21; 29A-29D; 31A-31D) so that diameters of the positioning holes (15A, 15B, 15C) of the stacked bus rings (11U, 11V, 11W, 11C) correspond with the diameters of the positioning step portions (25A, 25B, 25C) of the holding pins (21; 29A-29D; 31A-31D) at each axial position of the holding pins (21; 29A-29D; 31A-31D); and integrating the bus rings (11U, 11V, 11W, 11C) with a mold resin in a state where the bus rings (11U, 11V, 11W, 11C) are held at the predetermined intervals in the axial directions of the bus rings (11U, 11V, 11W, 11C) by the tip and the positioning step portions (25A, 25B, 25C) of the respective holding pins (21; 29A-29D; 31A-31D). preparing four ring-shaped bus rings (11U, 11V, 11W, 11C) each having a predetermined number of positioning holes (15A, 15B, 15C) arranged in a circumferential direction of the bus ring (11U, 11V, 11W, 11C); characterised by preparing a plurality of holding pins (21; 29A-29D; 31A-31D) each having positioning step portions (25A, 25B, 25C) having mutually different diameters and arranged at predetermined intervals in an axial direction of the holding pin (21; 29A-29D; 31A-31D) so that the smaller diameters are positioned closer to a tip of the holding pin (21; 29A-29D; 31A-31D); stacking the four bus rings (11U, 11V, 11W, 11C) at predetermined intervals in axial directions of the bus rings (11U, 11V, 11W, 11C) by inserting the holding pins into the positioning holes (15A, 15B, 15C) of the bus rings (11U, 11V, 11W, 11C) and by placing corresponding bus rings of the four bus rings (11U, 11V, 11W, 11C) on tip surfaces of respective holding pins (21; 29A-29D; 31A-31D) so that diameters of the positioning holes (15A, 15B, 15C) of the stacked bus rings (11U, 11V, 11W, 11C) correspond with the diameters of the positioning step portions (25A, 25B, 25C) of the holding pins (21; 29A-29D; 31A-31D) at each axial position of the holding pins (21; 29A-29D; 31A-31D); and integrating the bus rings (11U, 11V, 11W, 11C) with a mold resin in a state where the bus rings (11U, 11V, 11W, 11C) are held at the predetermined intervals in the axial directions of the bus rings (11U, 11V, 11W, 11C) by the tip and the positioning step portions (25A, 25B, 25C) of the respective holding pins (21; 29A-29D; 31A-31D).