Motor and compressor including the same

A motor comprising:

• a stator unit formed by coupling a plurality of stators to one another into an annular shape,
• wherein each of the stators has:
• an iron core having an arc-shaped core-back portion and a tooth portion protruding from the core-back portion, the iron core forming slot portions between the iron core and adjacent ones of the stators;
• insulating members disposed on both end portions, in an axial direction, of the iron core;
• insulating films disposed so as to be in contact with inner walls of the slot portions of the iron core;
• and
• a winding disposed in the slot portions and wound over the iron core with the insulating members and the insulating films interposed therebetween,
• wherein the tooth portion of the iron core has a tooth base protruding from the core-back portion toward an inner circumferential side and tooth tip portions protruding in a circumferential direction from a distal end portion of the tooth base,
• wherein each of the insulating films is disposed so as to be in contact with
• an inner circumferential surface of the core-back portion, a side surface, in a circumferential direction, of the tooth base, and an outer circumferential surface of the tooth tip portion that are part of the inner wall of the slot portion,
• at least a portion of the insulating film that is in contact with an outer circumferential surface of the tooth tip portion has a length in the axial direction longer than a length of the iron core in the axial direction, and
• wherein each of the insulating members has
• position fixing portions that are engaged with the iron core to fix a position of the insulating member, and
• a central base portion covering an end portion, in the axial direction, of the tooth base,
• wherein the central base portion has paired central legs extending in the axial direction from both sides, in a circumferential direction, of the central base portion toward the slot portions, and
• wherein the position fixing portions are paired thick-walled portions that are formed on the paired central legs and inwardly thickened, and the position fixing portions fix a position of the insulating member by the paired thick-walled portions holding the tooth base, therebetween, from both sides in a circumferential direction,
• wherein the insulating member has an inner circumferential wall portion formed on an inner circumferential side relative to the tooth base,
• wherein the inner circumferential wall portion has paired inner circumferential legs extending in the axial direction from both sides, in a circumferential direction, of the inner circumferential wall portion toward the slot portions, and
• wherein the insulating member has insertion recesses into which end portions, in an axial direction, of the insulating films are inserted, and each of the insertion recesses is constituted by a first recess formed in the inner circumferential wall portion, a second recess formed at a proximal end of one of the paired inner circumferential legs, and a third recess formed at a proximal end of one of the paired central legs.