Insulator structure

An insulator structure which is a structure of an insulator mounted on each of a plurality of teeth portions aligned in a motor circumferential direction, comprising:

• an outer circumferential piece that is provided on a first end side in a teeth portion axis direction along a motor radial direction in a teeth portion among the plurality of teeth portions and protrudes to an outer circumferential side when seen from the teeth portion axis direction;
• an inner circumferential piece that is provided on a second end side in the teeth portion axis direction in the teeth portion, protrudes to the outer circumferential side when seen from the teeth portion axis direction, and faces the outer circumferential piece in the teeth portion axis direction;
• and
• a side wall portion that covers an outer circumference of the teeth portion when seen from the teeth portion axis direction and connects the outer circumferential piece to the inner circumferential piece,
• wherein a space surrounded by a first facing surface of the outer circumferential piece that faces an inner circumferential piece side, a second facing surface of the inner circumferential piece that faces an outer circumferential piece side, and an outer surface of the side wall portion is a storage portion of a winding wire,
• a curved portion that forms an arc shape protruding to an opposite side of the storage portion is formed between the outer circumferential piece and the side wall portion in a cross section along the teeth portion axis direction, and
• a first inclination surface that extends from the outer surface of the side wall portion to an outer circumferential side in a teeth portion radial direction at an obtuse angle with respect to the outer surface,
• a step surface that extends along the teeth portion axis direction from a front end of the first inclination surface to an opposite side of the storage portion in the teeth portion axis direction, and
• a second inclination surface that extends in parallel with the first inclination surface from a front end of the step surface to an outer circumferential side in the teeth portion radial direction
• are formed on an inner surface of the curved portion that faces a storage portion side.