Coil, stator member, stator, and motor
There are provided a coil, a stator member, a stator, and a motor that can, in the case of joining (connecting) a busbar and the coil's terminals, simplify control necessary for joining such as positioning, actualize downsizing of a device (welding device or stator manufacturing device), and improve efficiency of joining work. The coil is configured by winding a conductor, and its first and second terminals are extended out on a side of one surface of the coil.
1. A coil comprising:
a main body made of a continuous strip-shaped flat conductor with a helical structure; and a first terminal and a second terminal extended out from the main body, wherein
the first terminal and the second terminal are extended out on a same side of one surface of the main body in a direction extending in a long side of the main body, and
welded portions between the first terminal and the helical structure body and between the second terminal and the helical structure body are provided in straight portions of the flat conductor.
2. The coil according to claim 1 , wherein one of the first terminal and the second terminal has an extending portion that extends in an axial direction of the helical structure of the main body.
3. The coil according to claim 1 , wherein the coil includes an approximately rectangular one-turn region of the helical structure body obtained by pressing end surfaces of a plurality of unit flat conductors, each having a length equal to or less than a length of the one-turn region, against each other along a strip longitudinal direction at the straight portion.
4. A stator member wherein a plurality of the coils according to claim 1 is arranged.
5. The stator member according to claim 4 , wherein the first terminal and the second terminal that are adjacent to each other in the plurality of coils are arranged to be approximately equally spaced.
6. The stator member according to claim 4 , wherein:
the plurality of coils is arranged to constitute an annular body; and
the first terminals and the second terminals are extended out on a side of an inner peripheral surface or an outer peripheral surface of the annular body.
7. The stator member according to claim 6 , wherein the first terminals and the second terminals are extended out on the side of the outer peripheral surface of the annular body.
8. A stator comprising: the coil according claim 1 ; and a stator core to which the coil is attached.
9. A motor comprising the stator member according to claim 4 .
10. A motor comprising the stator according to claim 8 .