A rotor includes a columnar rotor core extending in the axial direction, and a rotor cover covering a radially outer side of the rotor core. The rotor cover includes a protruding portion protruding to one side in the axial direction with respect to a one-side end surface in the axial direction of the rotor core, and a flange portion extending radially outward at a one-side end portion in the axial direction of the protruding portion.

A rotor includes a columnar rotor core extending in the axial direction, and a rotor cover covering a radially outer side of the rotor core. The rotor cover includes a protruding portion protruding to one side in the axial direction with respect to a one-side end surface in the axial direction of the rotor core, and a flange portion extending radially outward at a one-side end portion in the axial direction of the protruding portion.

A bobbin for a stator or rotor of an electric motor, the bobbin comprising an injection moulded plastic housing having a first section and a second section, wherein the first section is arranged to receive coil windings and includes an aperture to allow a tooth mounted on the stator or rotor to extend through the aperture, wherein the second section includes a flange arranged to extend in a first direction substantially orthogonal to the aperture that acts as a tooth tip for the tooth, wherein a metal element is mounted in or on the flange.

A bobbin for a stator or rotor of an electric motor, the bobbin comprising an injection moulded plastic housing having a first section and a second section, wherein the first section is arranged to receive coil windings and includes an aperture to allow a tooth mounted on the stator or rotor to extend through the aperture, wherein the second section includes a flange arranged to extend in a first direction substantially orthogonal to the aperture that acts as a tooth tip for the tooth, wherein a metal element is mounted in or on the flange.

A process for producing a rotor bandage for a rotor of an electric machine includes winding a composite material onto a carrier so as to form and create a rotor bandage, and applying a magnetizable material to the composite material so as to create a magnetizable layer on the composite material.

A process for producing a rotor bandage for a rotor of an electric machine includes winding a composite material onto a carrier so as to form and create a rotor bandage, and applying a magnetizable material to the composite material so as to create a magnetizable layer on the composite material.

A core having an annular core-back portion and a plurality of tooth portions formed, at intervals in a circumferential direction, on an inner circumferential surface of the core-back portion to protrude, a coil wound around each tooth portion with an insulator therebetween, and a mold resin portion coating the core and the coil, are included. The core-back portion is formed to be discontinuous at at least one position in the circumferential direction. The insulator has, at two or more positions in the circumferential direction, protrusions protruding to an outer side in a radial direction beyond an outer circumferential surface of the core-back portion. The mold resin portion does not coat a protrusion surface, along an axial direction, on the outer side in the radial direction of each protrusion.

A core having an annular core-back portion and a plurality of tooth portions formed, at intervals in a circumferential direction, on an inner circumferential surface of the core-back portion to protrude, a coil wound around each tooth portion with an insulator therebetween, and a mold resin portion coating the core and the coil, are included. The core-back portion is formed to be discontinuous at at least one position in the circumferential direction. The insulator has, at two or more positions in the circumferential direction, protrusions protruding to an outer side in a radial direction beyond an outer circumferential surface of the core-back portion. The mold resin portion does not coat a protrusion surface, along an axial direction, on the outer side in the radial direction of each protrusion.

A motor for a compressor, according to one embodiment of the present disclosure, may comprise one or more magnets. The motor may comprise a rotor core having a plurality of magnet support structures, which define one or more magnet-mounting spaces, disposed on the inner circumferential surface of the rotor core. The motor may comprise a rotor housing that is injection molded to be integrally coupled to the magnets and the rotor core. The magnet-mounting spaces may have one of the magnets inserted and arranged along a first direction. The magnet support structures may have, on the inner side thereof, a pass hole through which resin flows based on the injection molding of the rotor housing.

A motor for a compressor, according to one embodiment of the present disclosure, may comprise one or more magnets. The motor may comprise a rotor core having a plurality of magnet support structures, which define one or more magnet-mounting spaces, disposed on the inner circumferential surface of the rotor core. The motor may comprise a rotor housing that is injection molded to be integrally coupled to the magnets and the rotor core. The magnet-mounting spaces may have one of the magnets inserted and arranged along a first direction. The magnet support structures may have, on the inner side thereof, a pass hole through which resin flows based on the injection molding of the rotor housing.