Abstract: A rotor, a motor, an air-conditioning apparatus, and a method for manufacturing a rotor are provided with high productivity and reliability and with structural stability. The rotor includes a shaft, an inner core into which the shaft is inserted, an outer core provided on a radially outer side of the inner core and composed of a plurality of divided cores formed by stacking a plurality of thin plate materials and connected in an annular shape, and a coupling member made of resin, coupling the inner core and the outer core together, and covering both end faces of the outer core in an axial direction of the shaft. The outer core has radially outer parts of the divided cores brought into close contact with each other.

Abstract: An electric motor includes a stator around which an aluminum wire having a resin coating layer formed on a surface of the aluminum wire is wound; and a rotator arranged on an inner side of the stator to be rotatable, the aluminum wire comprising a terminal wire including an aluminum exposed portion, from which the resin coating layer is peeled off to expose an aluminum core wire, the stator comprising a terminal with which the aluminum exposed portion and a power supply wire for use in supplying electric power for rotating the rotator are connected, the terminal electrically conducting the aluminum exposed portion and the power supply wire, and a first solder layer formed on the terminal, covering an entire surface of the aluminum exposed portion, and joining the aluminum exposed portion and the terminal to each other.

Abstract: A motor rotor includes: a shaft; a smaller-radius iron core fixedly attached to an outer peripheral surface of the shaft; a larger-radius iron core disposed spaced apart from the smaller-radius iron core in a radial direction perpendicular to an axis of the shaft, which is formed in a ring shape in cross section by a combination of a plurality of iron core blocks, and disposed to share a common axis with the smaller-radius iron core; and an insulating resin portion used to fix the smaller-radius iron core and the larger-radius iron core. The larger-radius iron core and the smaller-radius iron core are formed of their respective different materials. The material forming the larger-radius iron core has an iron loss less than an iron loss of the material forming the smaller-radius iron core.

Abstract: Provided is a rotor for an IPM motor, including: a rotor core; permanent magnets embedded in the rotor core; a sensor magnet provided at one end of the rotor core; and a resin configured to fix the sensor magnet to the rotor core by covering the sensor magnet, wherein the sensor magnet includes: a base portion having an annular shape; and a plurality of projecting portions projecting toward the rotor core from a first surface, which is a surface of the base portion on a side opposed to the rotor core, and wherein the plurality of projecting portions each have a tapered portion on an inner periphery thereof, and are arranged at intervals on the first surface.

Abstract: A body outer shell includes a plurality of first body legs and a plurality of second body legs protruding outward and being disposed at a peripheral edge of an end of the body outer shell, and the end is near the bracket. The bracket includes a plurality of first bracket legs and a plurality of second bracket legs protruding outward and being disposed at a peripheral edge of the bracket. The body outer shell and the bracket are fastened together using the first body legs and the first bracket legs via fixing members. The body outer shell, the bracket, and a support member are fastened together using the second body legs and the second bracket legs via fixing members in a state where the bracket is disposed between the body outer shell and the support member, and the motor and the support member are fixed together.

Abstract: Provided is a rotor for an IPM motor, including: a rotor core; permanent magnets embedded in the rotor core; a sensor magnet provided at one end of the rotor core; and a resin configured to fix the sensor magnet to the rotor core by covering the sensor magnet, wherein the sensor magnet includes: a base portion having an annular shape; and a plurality of projecting portions projecting toward the rotor core from a first surface, which is a surface of the base portion on a side opposed to the rotor core, and wherein the plurality of projecting portions each have a tapered portion on an inner periphery thereof, and are arranged at intervals on the first surface.

Abstract: A rotor of a rotating motor includes a boss into which a shaft is inserted, a rotor yoke provided on a side of an outer circumference of the boss and formed of a plurality of pole pieces connected into a circular ring shape, and a coupling member made of resin with which the boss and the rotor yoke are integrally molded. Each of the plurality of pole pieces is provided with an injection hole that is bored in an axial direction and into which the resin is injected in the integral molding.

Abstract: The motor includes a motor body to rotate a shaft by generating a rotating magnetic field; a bearing supporting the shaft; and a bracket being electrically non-conductive, surrounding an outer periphery of the bearing, and supporting the bearing, wherein the bracket is not in contact with any member formed of conductive material at an outer periphery of the bracket.

Abstract: A rotor, a motor, an air-conditioning apparatus, and a method for manufacturing a rotor are provided with high productivity and reliability and with structural stability. The rotor includes a shaft, an inner core into which the shaft is inserted, an outer core provided on a radially outer side of the inner core and composed of a plurality of divided cores formed by stacking a plurality of thin plate materials and connected in an annular shape, and a coupling member made of resin, coupling the inner core and the outer core together, and covering both end faces of the outer core in an axial direction of the shaft. The outer core has radially outer parts of the divided cores brought into close contact with each other.

Abstract: A motor rotor includes: a shaft; a smaller-radius iron core fixedly attached to an outer peripheral surface of the shaft; a larger-radius iron core disposed spaced apart from the smaller-radius iron core in a radial direction perpendicular to an axis of the shaft, which is formed in a ring shape in cross section by a combination of a plurality of iron core blocks, and disposed to share a common axis with the smaller-radius iron core; and an insulating resin portion used to fix the smaller-radius iron core and the larger-radius iron core. The larger-radius iron core and the smaller-radius iron core are formed of their respective different materials. The material forming the larger-radius iron core has an iron loss less than an iron loss of the material forming the smaller-radius iron core.

Abstract: A molded motor 100 includes a molded stator formed by providing a molding resin to a stator, a rotor inside the molded stator, a pair of bearings supporting a rotor shaft of the rotor, and an insulating bracket fitted in an inner circumferential part of an opening formed at an axial end of the molded stator to surround and support an outer ring of the bearing with a concave part formed at a center, and formed of an insulating resin.

Abstract: An electric motor includes a stator around which an aluminum wire having a resin coating layer formed on a surface of the aluminum wire is wound; and a rotator arranged on an inner side of the stator to be rotatable, the aluminum wire comprising a terminal wire including an aluminum exposed portion, from which the resin coating layer is peeled off to expose an aluminum core wire, the stator comprising a terminal with which the aluminum exposed portion and a power supply wire for use in supplying electric power for rotating the rotator are connected, the terminal electrically conducting the aluminum exposed portion and the power supply wire, and a first solder layer formed on the terminal, covering an entire surface of the aluminum exposed portion, and joining the aluminum exposed portion and the terminal to each other.

Abstract: A rotor includes a shaft, an inner core into which the shaft is inserted, an outer core provided on an outer peripheral side of the inner core, the outer core including a plurality of split cores connected annularly, each of the split core including a plurality of thin plate materials stacked; and a connecting member in which the inner core and the outer core are molded with resin and fixed. The connecting member is configured such that one end face of the outer core having a level difference caused by stacking thickness deviation of each of the split cores is flattened with the resin.

Abstract: A rotor of a rotating motor includes a boss into which a shaft is inserted, a rotor yoke provided on a side of an outer circumference of the boss and formed of a plurality of pole pieces connected into a circular ring shape, and a coupling member made of resin with which the boss and the rotor yoke are integrally molded. Each of the plurality of pole pieces is provided with an injection hole that is bored in an axial direction and into which the resin is injected in the integral molding.

Abstract: To provide an air conditioner outdoor unit including a casing having an air inlet on a side surface and an air outlet on an upper surface, a heat exchanger that covers the air inlet and is provided inside the casing, a fan that sucks in air from the air inlet and discharges air from the air outlet, and a fan motor provided on a lower side of the fan. The fan motor is set such that an outer diameter D1 thereof is larger than an outer diameter D2 of a fan boss, and an outer periphery thereof is positioned on a center side of the fan motor than a straight line c passing an upper side of a center (for example, a predetermined position a) of the heat exchanger and a side (for example, a predetermined position b) of the fan boss.

Abstract: In a motor, a connection portion between a lead wire and an aluminum wire is provided distant from a terminal block, with a leading end of a winding residing on one of cores that is not adjacent to a core that is at a position where the terminal block is provided.

Abstract: The controller controls a bypass solenoid valve and hot-water supply expansion unit in a defrosting operation based on a refrigerant temperature detected by a first temperature sensor and a heat medium temperature detected by a second temperature sensor.

Abstract: A mold stator is configured to include a stator core and a mold resin that covers the stator core. A divided-core part includes a yoke part that is arranged coaxially with a rotor that is provided in the stator core, a teeth part that extends from the yoke part in a radially-inward direction, and a teeth distal-end part that is formed at a radially-inward end part of the teeth part. An outer-circumferential flat-surface part is formed on an outer circumferential surface of the yoke part and an outer-circumferential flat-surface part is formed at a position on an outer circumferential surface of the mold stator opposing the flat-surface part of the yoke part.

Abstract: The motor includes a motor body to rotate a shaft by generating a rotating magnetic field; a bearing supporting the shaft; and a bracket being electrically non-conductive, surrounding an outer periphery of the bearing, and supporting the bearing, wherein the bracket is not in contact with any member formed of conductive material at an outer periphery of the bracket.

Abstract: A molded motor 100 includes a molded stator formed by providing a molding resin to a stator, a rotor inside the molded stator, a pair of bearings supporting a rotor shaft of the rotor, and an insulating bracket fitted in an inner circumferential part of an opening formed at an axial end of the molded stator to surround and support an outer ring of the bearing with a concave part formed at a center, and formed of an insulating resin.