Abstract: Provided is an interior permanent magnet motor, including: a stator; and a rotor, in which an outline of each of magnet insertion holes includes a radially inner-side line, a radially outer-side line, a pair of side lines, a pair of first round portions, and a pair of second round portions, in which a thin portion is formed between an outer peripheral surface of the rotor and each of the side lines, in which each of the first round portions is provided between a corresponding end of the corresponding radially outer-side line and a corresponding end of the corresponding side line, and in which each of the second round portions is provided between a corresponding end of the corresponding radially inner-side line and a corresponding end of the corresponding side line.

Abstract: A rotor of a permanent-magnet-embedded electric motor includes an annular rotor core having a plurality of magnet insertion holes formed in a circumferential direction, and permanent magnets inserted into the magnet insertion holes, respectively. The rotor core is formed by alternately stacking a first core block and a second core block in an axial direction of the rotor core, the first core block not having slits between each of the magnet insertion holes and a circumferential surface of the rotor core, and the second core block having the slits between each of the magnet insertion holes and the circumferential surface of the rotor core. One of the slits and one end of the permanent magnet are arrayed in a radial direction, and the other slit and the other end of the permanent magnet are arrayed in the radial direction.

Abstract: A rotary electrical machine comprises a stator and a rotor having an axis of rotation, wherein, on a plane radial to the axis of rotation has a rotor tooth with an arc of a circle. The arc is defined by a centre situated on the axis of symmetry of the tooth, a first point at an intersection between the axis of symmetry and a circle centred on the axis of rotation, and an outer radius. A second point is situated on an axis which passes via the axis of rotation, and forms an angle of 360° divided by a number equal to twice the number of magnetic poles. The second point is situated from the axis of rotation an amount equal to the outer radius decreased by an allowance. A ratio between the allowance and the outer radius is between 0.015 and 0.07.

Abstract: A rotor includes a rotor core and a bond magnet. The rotor core has core blocks and a partition core sandwiched between the core blocks in an axial direction. Magnet holes pass through the core blocks and the partition core in the axial direction, respectively, and the magnet hole is communicated with the magnet holes. Positions of the magnet holes in a circumferential direction are deviated from each other. The bond magnet fills the magnet holes.

Abstract: An apparatus for manufacturing a laminated iron core includes a conveyance jig on which a laminated iron core body is placed, a die unit including a lower die and an upper die upwardly and downwardly movable with respect to the lower die, which holds the laminated iron core body placed on the conveyance jig from both sides in a lamination direction of the laminated iron core body between the lower die and the upper die, an injector injecting a resin into a through hole formed through the laminated iron core body held by the die unit from the lower die through the conveyance jig or the upper die, and an upward and downward movement unit capable of upwardly and downwardly moving the conveyance jig with respect to the lower die, and being provided independently from the die unit.

Abstract: A compressor motor and a method for magnetizing a rotor thereof are provided. The compressor motor includes a stator and a rotor configured to electromagnetically interact with the stator to be rotated, wherein the rotor includes a core, a plurality of magnets inserted into the core, and a cover configured to cover both end portions of the core and to be injection-molded so as to fill accommodation spaces that are formed between the core and the plurality of magnets.

Abstract: An electric machine including a stator and rotor. The rotor has a core wherein each pole includes first and second axially extending magnet slots positioned in an outwardly opening V-shape. Permanent magnets are positioned in the magnet slots. The magnet slots define first and second opposing major edges wherein the first major edge is disposed nearer the outer radial perimeter of the rotor core. First and second opposing minor edges extend between the major edges and the first minor edge is disposed nearer the outer radial perimeter. The first and second slots are reflectively symmetrical with one symmetrical aberration. The symmetrical aberration being formed by an axially extending non-symmetric gap defined by the first major edge of the second magnet slot proximate the first minor edge. Demagnetization may be reduced by operating the machine with the second magnet slot trailing the first magnet slot during rotation of the rotor.

Abstract: A rotary electric machine includes a stator and a rotor. The rotor includes a rotor core and a plurality of permanent magnets. The permanent magnets are disposed to be divided into two layers, the two layers being a layer on the outer peripheral side and a layer on the inner peripheral side of the rotor core, and the permanent magnets are disposed line-symmetrically with respect to a magnetic pole center of the rotor core and in a V-shape or a U-shape in each of the two layers. An angle that each of the permanent magnets disposed on the outer peripheral side makes with the magnetic pole center of the V-shape or the U-shape is larger than an angle that each of the permanent magnets disposed on the inner peripheral side makes with the magnetic pole center of the V-shape or the U-shape.

Abstract: According to one embodiment, a rotor includes a shaft and a rotor core fixed to the shaft. A plurality of flux barriers are formed at the rotor core. Each of the flux barriers is formed with a plurality of bridges, and one or more barrier regions that have a lower permeability than a portion other than each of the flux bathers in the rotor core between the plurality of bridges. A permanent magnet is provided in at least one of the barrier regions. A magnetizing direction of the permanent magnet is directed in a direction that intersects a longitudinal direction of the flux barrier. A value of (?0×SM×Br)/(?re×tFB×wB) is within a range between 1.2 and 3.0.

Abstract: Disclosed is a motor comprising a stator and a rotor, wherein the rotor comprises a plurality of rotor cores and a plurality of magnets, and wherein the magnet is configured to have a face facing the center of rotation of the rotor exposed. Accordingly, a motor may minimize a non-magnetization area and enable a magnet to be fully magnetized, when it comes to post magnetization of the magnet.

Abstract: A rotor for a reluctance machine is provided. The rotor includes a cylindrical soft-magnetic element having cutouts for forming magnetic flux barriers. Some or all of the flux barriers are divided by one or more webs, with the profile of the individual webs forming a closed line which divides the rotor in the radial direction into an inner and an outer region. The cut-outs may be partially or fully filled with a a paramagnetic or diamagnetic filler material.

Abstract: A rotor for an electric motor which includes permanent magnets is formed so that the possibility of demagnetization of the permanent magnets is reduced. The rotor has at least one permanent magnet embedded in a magnetically conductive rotor core, and at least one flux path in the rotor core, for a magnetic flux caused by a magnetic stator field generated by a stator of the electric motor. The rotor core is realized, with respect to at least one of the flux paths, with a magnetically conductive shunt that bridges at least one of the permanent magnets for the magnetic flux that is caused by the stator field.

Abstract: A rotor has a first slot and a second slot each being substantially rectangular and together forming a V-shape when viewed from the direction of a rotary axis. The rotor also has flux barriers each provided between a first abutting portion and a second abutting portion on an outer peripheral side of each of the first slot and the second slot and formed to bulge toward the outer peripheral side relative to short edges on the outer peripheral side of the first slot and the second slot when viewed from the direction of the rotary axis of the rotor core.

Abstract: The present invention concerns a rotor of a rotating electric machine, comprising a rotor body (2) in which recesses (3) are provided in such a way as to define the poles (4) of the rotor, in particular at least three recesses per pole, each pole having a radial axis of the pole, the recesses (3) having an elongated shape and each comprising two short sides, the recesses being disposed in one or a plurality of rows per pole, one row comprising at least two, or indeed at least three recesses (3) disposed consecutively, the short sides thereof defining, between two consecutive recesses of a given row, a material bridge, said material bridge generally extending along a longitudinal axis (2) of the bridge oriented closer to the radial axis of the corresponding pole of the rotor, the further one is from the rotational axis.

Abstract: A rotor includes nested V-shaped inner and outer pockets defining corresponding pole arc angles relative to a common center bridge axis and vertex, respective inner and outer top bridges, and respective inner and outer center bridges. A ratio of corresponding pole arc angle dependent functions and a ratio of a sum of the inner top bridges and center bridge widths to a sum of the outer top bridges and center bridge widths are same.

Abstract: A rotor includes an iron core that assumes a cylindrical or columnar shape, and a plurality of magnets embedded in the iron core and equiangularly arranged with respect to an axis of the iron core. The iron core includes a first end surface portion, a second end surface portion, and a central portion disposed between the first end surface portion and the second end surface portion. Each of the first end surface portion, the second end surface portion, and the central portion has one or more gaps formed at positions thereof remoter from the axis of the iron core than the magnets. A third cross-sectional planar dimension of the central portion is greater than a first cross-sectional planar dimension of the first end surface portion and a second cross-sectional planar dimension of the second end surface portion.

Abstract: The described technology relates to a rotor having a flux filtering function and a synchronous motor comprising the same. The rotor includes a rotor iron core, a plurality of permanent magnets and a plurality of conductor bars. The rotor iron core has a rotary shaft insertion hole, formed in the center thereof, into which a rotary shaft is inserted, a plurality of permanent magnet insertion holes being formed in the circumference of the rotary shaft insertion hole, and a plurality of conductor bar insertion holes are uniformly formed in a region between the plurality of permanent magnet insertion holes and the outer surfaces thereof. The plurality of permanent magnets are respectively inserted into the plurality of permanent magnet insertion holes, thereby forming N and S magnetic poles of the rotor. Additionally, the plurality of conductor bars are respectively inserted into the plurality of conductor bar insertion holes.

Abstract: A rotor is for a permanent magnet embedded-type motor and a motor using the same. A rotor for a permanent magnet embedded-type motor includes a rotor core having a rotary shaft fixed to a center and having a plurality of magnet insertion holes formed to be spaced along a circumferential direction and a plurality of pairs of permanent magnets, respectively, inserted into each of the plurality of magnet insertion holes in a V-shape to be gradually spaced apart from each other toward a radially outer side. Each of the plurality of magnet insertion holes includes a pair of inner sides facing each other, and a barrier hole is formed to expand an inner space of each of the magnet insertion holes to protrude from the pair of inner sides, respectively.

Abstract: A rotor for an electric motor is provided. The rotor is constructed of a stack of first and second laminations. The laminations include segments and insulated regions between the segments. The first laminations include interconnections such that the first laminations are self-supporting. The second laminations are affixed to the first laminations to support the segments of the second laminations.

Abstract: A stator of an electric motor (40) has windings (44) and a stator core (43) in which eighteen teeth (71), around which the windings (44) are wound, are formed circumferentially. A rotor of the electric motor (40) has magnets (72) and a rotor core (46) in which six insertion holes (73), into which the magnets (72) are inserted, are formed circumferentially. The magnets (72) are rare-earth magnets of a grain boundary diffusion type having a residual magnetic flux density Br of from 1.36 to 1.42 T. The total area of magnet-parallel cross-sections (84) of the teeth (71) is from 0.56 times to 0.93 times the total area of tooth-facing surfaces (83) of the magnets (72).

Abstract: A rotary electric machine, in which ?>? is established when the teeth portion has a width ? in a circumferential direction thereof, a rotation center of the rotor and one of corners, which is on a rotor surface side, on both ends of each of the permanent magnets are connected by a straight line, a center between an N-pole and an S-pole of the permanent magnets is on a q-axis, and an angle formed by two straight lines on the q-axis side is ?, a first bridge part is provided between a flux barrier provided at the rotor core and the rotor surface, and ?>? is established when the first bridge part has a minimum width ?, and the flux barrier has a minimum width ? on the q-axis.

Abstract: A rotor capable of preventing a cover tube from being deformed locally due to injection pressure of a resin injected into a gap between a rotor core and a cover tube. The rotor includes a rotor core, a plurality of magnets, a cover tube, and a filler which is filled into the gap between the rotor core, and the cover tube. The rotor core includes a plurality of projections which project radially outward from an outer circumferential face of the rotor core, and which extends toward a second end face of the rotor core from a first end face of the rotor core in an axial direction of the rotor core, and a cutout that is dented radially inward from a radially outside end face of at least one of the projections.

Abstract: The present invention relates to a motor for a vehicle and a rotor applied thereto. Provided is a rotor including a rotor core in which a plurality of rotor core members are stacked and a plurality of magnets inserted into magnet insertion holes of the rotor core, and further including fixing patterns that protrude toward the center of the magnet insertion holes from one sides of the magnet insertion holes of the rotor core members respectively disposed at an uppermost layer and a lowermost layer.

Abstract: A rotor for a rotary electric machine includes a magnetic rotor body and at least two permanent magnets defining a pole of the rotor, the two permanent magnets being arranged on either side of a radial axis of the pole in a common recess which is provided in the magnetic rotor body and through which the radial axis of the pole passes.

Abstract: A rotating electric machine includes an armature and a field rotor. The field rotor includes magnetic pole teeth, an annular body portion, a bypass gap portion and permanent magnets. The magnetic pole teeth are arranged so that the polarities thereof alternate between N and S in a circumferential direction of the field rotor. The annular body portion connects the magnetic pole teeth at their root portions. The bypass gap portion is provided on an opposite side of the annular body portion to the magnetic pole teeth. The permanent magnets are provided in the annular body portion so as to be spaced from one another in the circumferential direction. The bypass gap portion includes first magnetic gaps each of which is formed adjacent to one of the permanent magnets. Each of the permanent magnets is arranged within an inter-pole angular range between one circumferentially-adjacent pair of the magnetic pole teeth.

Abstract: A rotor lamination for an electric motor includes a body and a plurality of tangs. The body defines a shaft aperture, which defines a rotor axis, a plurality of flux directing aperture (FDA) sets, and a plurality of mass reduction apertures that are formed through the body. The FDA sets are spaced circumferentially about the body and each includes one or more apertures that are configured to receive a permanent magnet therein and/or form a flux barrier. The mass reduction apertures are disposed radially between the shaft aperture and the plurality of flux directing aperture sets. Each of the tangs is coupled to the body and extends radially inward into the shaft aperture. Each of the tangs has a pair of side walls that are disposed about a first centerline that intersects the rotor axis and an associated one of the mass reduction apertures that is disposed radially outwardly therefrom.

Abstract: The BLDC motor includes a stator, and a rotor disposed inside of the stator and including a plurality of permanent magnet parts, each of the permanent magnet parts including first and second permanent magnets which are disposed to have an interval therebetween. The rotor includes a slot part including a first portion into which the first permanent magnet is inserted, a second portion into which the second permanent magnet is inserted, and a third portion connecting the first and second portions to each other. The first and second portions have one end portions which are spaced apart from each other by a first distance and other end portions which are spaced apart from each other by a second distance which is shorter than the first distance, and the third portion connects the other end portions of the first and second portions to each other.

Abstract: A plastic-packaged stator includes a sleeve base, a plurality of tooth assemblies, and a plastic-packaged body. Each tooth assembly includes an iron core including a plurality of laminated silicon steel sheets, a terminal insulator, and coil windings. The terminal insulator is disposed on one end of the iron core. The coil windings are coiled on the terminal insulator. A plurality of lug bosses is circumferentially disposed at intervals on the outer wall surface of the sleeve base. An inner end of the iron core includes slots. The tooth assemblies are circumferentially disposed on the outer wall surface of the sleeve base. The lug bosses are embedded in the slots. The plastic-packaged body integrates the sleeve base with the tooth assemblies.

Abstract: A single phase motor includes a stator and a rotor. The stator includes a stator core. The stator core includes an outer yoke and a plurality of stator teeth. Each stator tooth includes a winding portion and a pole shoe coupled to the winding portion. The rotor includes a rotor core and a plurality of permanent magnets. The permanent magnets are evenly spaced and embedded in the rotor core. An outer circumferential wall of the rotor core is an irregular cylinder and includes a plurality of spaced circular arc surfaces and transition surfaces. The starting of the single phase motor is stable and reliable. The present invention also provides a rotor for the single phase motor.

Abstract: The BLDC motor includes a stator, and a rotor disposed inside of the stator and including a plurality of permanent magnet parts, each of the permanent magnet parts including first and second permanent magnets which are disposed to have an interval therebetween. The rotor includes a slot part including a first portion into which the first permanent magnet is inserted, a second portion into which the second permanent magnet is inserted, and a third portion connecting the first and second portions to each other. The first and second portions have one end portions which are spaced apart from each other by a first distance and other end portions which are spaced apart from each other by a second distance which is shorter than the first distance, and the third portion connects the other end portions of the first and second portions to each other.

Abstract: A manufacturing method for manufacturing a rotor such that a permanent magnet is inserted into a slot hole of a rotor core with a spacer includes: a step of placing, on the rotor core, a guide whose upper end has a curved guide surface such that the guide space continues with the slot hole in the up-down direction; a step of placing the spacer on the guide so that the spacer lies across the guide space; a step of inserting the permanent magnet into the guide space with the spacer being wound around the permanent magnet; and a step of inserting, into the slot hole, the permanent magnet around which the spacer is wound.

Abstract: A brushless motor includes a stator having stator core and winding teeth evenly distributed on the stator core; and a rotor rotatably disposed within the stator with the winding teeth facing the rotor, where the rotor has a rotor core and magnets evenly distributed around the rotor core. A first symmetry axis is defined passing through a center of a one of the magnets to a center of the rotor, and a second symmetry axis is defined passing between adjacent magnets to the center of the rotor. A first distance between the outer surface of the rotor to a surface of a winding tooth when the first axis is aligned with the winding tooth is smaller than a second distance between the outer surface of the rotor to the surface of the winding tooth when the second axis is aligned with the winding tooth.

Abstract: A permanent magnet rotating electric machine includes a stator and a rotor disposed with an air gap interposed between the stator and the rotor. The rotor is provided with a rotor core provided with a plurality of magnet insertion holes in a circumferential direction, and a press-fit body pressed into each of the magnet insertion holes. The press-fit body includes a permanent magnet and a magnet fixing member provided on the sides of the permanent magnet. The press-fit body is fixed within the magnet insertion hole in such a way that, in the circumferential direction, one end of the press-fit body makes a line contact with the inner wall of the magnet insertion hole through a line contact portion of the magnet fixing member and the other end thereof makes a surface contact with the inner wall of the magnet insertion holes through a surface contact portion of the magnet fixing member.

Abstract: A punching sheet used for manufacturing a rotor, including an axle hole, an outer edge, and a plurality of mounting grooves for receiving permanent magnets. The axle hole is disposed at the center of the punching sheet, and the plurality of mounting grooves are disposed in the proximity of the outer edge of the punching sheet. The outer edge of the punching sheet includes a plurality of arcs which have equal length and are connected to one another, and a center of a circle corresponding to each arc deviates from the center of the axle hole.

Abstract: A rotor, including: a rotor core and a plurality of permanent magnets. The rotor core includes an axle hole, four slots equally distributed at the outer side of the axle hole, first magnetic isolating slots, and second magnetic isolating slots. The first magnetic isolating slots are disposed at each side of each of two adjacent slots, and the second magnetic isolating slots are disposed at each side of each of the other two adjacent slots. Both the first magnetic isolating slots and the second magnetic isolating slots communicate with corresponding slots. Two lines connecting a center of the axle hole and two first magnetic isolating slots respectively at both sides of one slot form a first angle at the center, and two lines connecting the center of the axle hole and two second magnetic isolating slots respectively at both sides of one slot form a second angle at the center.

Abstract: A permanent magnet type rotating electric machine includes a stator, a rotor core including magnet insertion holes, and permanent magnets inserted into the magnet insertion holes and fixed to the rotor core. The permanent magnets include N-pole magnets and S-pole magnets. The N-pole magnets are arranged adjacent to each other in a circumferential direction and form a first set. The S-pole magnets are arranged adjacent to each other in the circumferential direction and form a second set. The first set and the second set are arranged along the same circumference. The rotor core includes an outer circumferential portion that includes a groove at a location corresponding to a position between the N-pole magnets and a groove at a location corresponding to a position between the S-pole magnets.

Abstract: In a permanent magnet electric motor, a plurality of projections are formed at least partially along an axial direction in the magnet insertion openings, the projection positioning both edges of the permanent magnet in the circumferential direction so that vacant spaces are defined at each sides of the permanent magnet in the circumferential direction; a plurality of slits arranged along the circumferential direction are provided in regions, the region being positioned radially outward from the permanent magnet and being sandwiched at the edges of the permanent magnet in the circumferential direction by the projections; and the shortest distance between the slit and the magnet insertion opening is set to be greater than the shortest distance between the slit and an outer circumferential surface of the rotor core.

Abstract: An electric machine for a vehicle, comprising a stator, and a rotor comprising a plurality of poles, where each pole comprises a first V-shaped flux barrier and a second V-shaped flux barrier, where the first V-shaped flux barrier comprises two magnets with inner air cavities and outer air cavities, where the second V-shaped flux barrier comprises two magnets with inner air cavities and outer air cavities, and where the first and second V-shaped flux barriers are arranged adjacent each other and symmetrically to a d-axis of the rotor, where each of the poles further comprise a first V-shaped flux redirector arranged symmetrically to the d-axis and between the first V-shaped flux barrier and the second V-shaped flux barrier.

Abstract: A rotor, which is cylindrically formed of a magnetic body and in which a plurality of magnet embedding holes are annularly formed at predetermined intervals in a circumferential direction, plate-like permanent magnets being embedded in the magnet embedding holes, includes a flux barrier that is disposed toward an outer circumference of the rotor from an circumferential end of each of the magnet embedding holes, and a slit that is disposed to be adjacent to the flux barrier, in which the slit is a long hole extending in a direction of becoming distant from the flux barrier, from an inner circumferential side of the rotor toward an outer circumferential side thereof, and a notch portion is provided on the outer circumference of the rotor opposing the flux barrier in a diameter direction of the rotor.

Abstract: An electric machine includes a stator and a rotor operable with the stator. The rotor includes at least one pole section, the pole section defining a direct axis in a flux barrier having a first end and a second end. Each of the first and second ends are positioned proximate to the stator. The first end defines a first angular position relative to the direct axis and the second end defines a second angular position relative to the direct axis. The first angular position is different in magnitude than the second angular position to reduce a torque ripple or torque oscillation of the electric machine.

Abstract: A motor includes: an annular stator attached in a housing; a rotor that is disposed in the stator and is rotatably supported by the housing; and a plurality of permanent magnets embedded in a rotor core of the rotor, in which the rotor core has embedding holes respectively in which the permanent magnets are fitted, and each of the embedding holes is formed with filling holes each continuous in an axial direction of the rotor core at diagonal positions of each of the permanent magnets.

Abstract: Certain aspects relate to designs for an interior permanent magnet (IPM) electrical machine rotor and magnets having a double layer split interior magnet configuration. Compared to existing designs, the disclosed rotor design has an increased amount of magnet material, more elongated and thinner slots, a wider angle for the “nested-v” configuration, and wider branches between layers of magnets, resulting in an improved power density.

Abstract: A motor that minimizes demagnetization to improve a force resistant to the demagnetization without increasing a thickness of each permanent magnet and a distance between each permanent magnet and a stator includes a rotor that rotates in one direction and includes cavities configured to hold magnets, flux barriers configured to communicate with first ends of the cavities and formed adjacent to an outer circumferential surface of the rotor, and ribs formed between the outer circumferential surface of the rotor and the flux barriers. Each of the ribs is configured such that a width of one end thereof at an upstream side in a rotational direction of the rotor is wider than that of the other thereof at a downstream side in the rotational direction.

Abstract: A laminated core 10 including a plurality of laminated iron core pieces, each of the iron core pieces being connected in a laminating direction by filling resin in a plurality of resin holes penetrating the laminated core 10 in the laminating direction, and a method for manufacturing the laminated core 10, by making a junction area of an iron core piece (A) 13 and resin larger than a junction area of an iron core piece (U) 14 and resin, the iron core piece (A) 13 being provided on an end in an axial direction, the iron core pieces (U) 14 being arranged at positions other than the end in the axial direction, or by providing locking portions at tip portions of resin, acquired joint strength of the iron core piece (A) 13.

Abstract: A rotating electric machine including: —a magnetic mass, in particular rotoric, including first housings, —a plurality of permanent magnets inserted into the first housings, each permanent magnet having two polar faces, and —nonmagnetic shims inserted into the first housings and/or into second housings formed in the magnetic mass, —the shims being configured to cause a deformation of the first housings reducing the parasitic air gap between at least a polar face of a permanent magnet and the corresponding wall of a first housing.

Abstract: A reluctance motor and a flux barrier structure thereof are provided. The flux barrier structure is disposed in a rotor, and the flux barrier structure has at least one flux barrier space and a plurality of support bars. The flux barrier space is formed by at least one surrounding wall of the rotor. The support bars are intersected with each other in the flux barrier space, and the support bars are extended from one side of the enclosure wall to the opposite side thereof.

Abstract: An electrical machine with a rotor which has at least one electrical sheet. The electrical sheet having crosspieces, wherein the crosspieces have a deformation in a direction normal to the plane of the electrical sheet.

Abstract: An interior permanent magnet rotor includes a cylindrical rotor core having an axial hole extending in an axial direction, and a resin magnet that is formed to fill the axial hole by injection molding and that has a pair of axial end faces. The resin magnet includes a linear portion that has a linear shape in section perpendicular to the axial direction of the rotor core. The linear portion has a first end and a second end located closer to an outer periphery of the rotor core than the first end is. A gate mark is located on the second end of the linear portion on at least one of the axial end faces of the resin magnet.

Abstract: In a permanent magnet embedded electric motor, a rotor iron core of a rotor disposed on an inner diameter side of a stator includes: a plurality of first slits that are formed on a radial direction outer side of a magnet insertion hole, and communicate with the magnet insertion hole; a plurality of second slits formed at positions opposed to and spaced apart from the first slits; inter-slit iron core portions formed between the first slits and the second slits; outer side iron core portions formed between the second slits and an outer circumferential surface of the rotor iron core; space portions communicating with rotating direction end portions of the magnet insertion hole; and thin iron core portions that are formed between the space portions and the outer circumferential surface of the rotor iron core, and extend in a rotating direction.

Abstract: A coolant flow channel is formed so as to pass axially through a rotor core radially inside magnet housing apertures, a linking flow channel is formed so as to have a flow channel width that is narrower than a maximum flow channel width of the coolant flow channel, so as to link the coolant flow channel and the magnet housing apertures, and so as to pass axially through the rotor core, and permanent magnets are fixed to an inner wall surface of the magnet housing apertures by an adhesive that is disposed only between a wall surface of the permanent magnets that is positioned on a radially outer side and the inner wall surface of the magnet housing apertures so as to expose a region of a wall surface of the permanent magnets that is positioned on a radially inner side that faces the linking flow channel.