Stator for motor and motor including the same

A motor comprising:

• a stator;
• and
• a rotor,
• wherein the stator has a structure having a hole which is formed at a center thereof by arranging a plurality of assemblies along a circumferential direction (C) of the stator, and
• the rotor is disposed in the hole,
• wherein each of the plurality of assemblies comprises:
• a stator core;
• a bobbin disposed to surround an outer surface of the stator core;
• a coil which is wound multiple times around the bobbin and has a lead-in line and a lead-out line disposed at respective ends of the coil;
• and
• a plurality of bus bars disposed on the bobbin,
• wherein the plurality of bus bars comprise a first bus bar, a second bus bar, and a third bus bar,
• wherein the plurality of assemblies, both ends of the first bus bar in the circumferential direction (C) and both ends of the second bus bar in the circumferential direction (C) are spaced apart from each other in the circumferential direction (C) while being spaced apart from each other in a radial direction (R) or an axial direction (A) of the stator,
• wherein in the plurality of assemblies, both of the ends of the second bus bar in the circumferential direction (C) and both ends of the third bus bar in the circumferential direction (C) are spaced apart from each other in the circumferential direction (C) while being spaced apart from each other in the radial direction (R) or the axial direction (A),
• wherein the first bus bar crosses the second bus bar and the third bus bar,
• wherein the third bus bar is disposed further outward than the second bus bar in the radial direction (R),
• wherein in the plurality of assemblies, the second bus bar is disposed to be biased in a first circumferential direction (C1) of both directions of the circumferential direction (C) with respect to the stator core and the bobbin, and the third bus bar is disposed to be biased in a second circumferential direction (C2) of both of the directions of the circumferential direction (C) with respect to the stator core and the bobbin,
• wherein a bent portion bent in the axial direction (A) of the stator is disposed at each of both of the ends of the first to third bus bars in the circumferential direction (C),
• wherein the plurality of assemblies are divided into one or more first assemblies, one or more second assemblies, and one or more third assemblies,
• each of the first assemblies, each of the second assemblies, and each of the third assemblies are alternately arranged along the circumferential direction (C), and
• wherein a first one of the bent portions disposed in the first bus bar of a first assembly among the one or more first assemblies is joined to a first one of the bent portions disposed in the third bus bar of a second assembly, disposed immediately after the first assembly among the one or more second assemblies, to form a junction region, and a second one of the bent portions disposed in the first bus bar of the first assembly is joined to a first one of the bent portions disposed in the second bus bar of a third assembly, disposed immediately before the first assembly among the one or more third assemblies, to form a junction region,
• a first one of the bent portions disposed in the second bus bar of the first assembly is joined to a first one of the bent portions disposed in the first bus bar of the second assembly to form a junction region, and a second one of the bent portions disposed in the second bus bar of the first assembly is joined to a first one of the bent portions disposed in the third bus bar of the third assembly to form a junction region, and
• a first one of the bent portions disposed in the third bus bar of the first assembly is joined to a first one of the bent portions disposed in the second bus bar of the second assembly to form a junction region, and a second one of the bent portions disposed in the third bus bar of the first assembly is joined to a first one of the bent portions disposed in the first bus bar of the third assembly to form a junction region.