Abstract: A rotor that includes a shaft; a rotor core that is attached to the shaft and that is configured of a plurality of electric steel plates that are stacked; and a permanent magnet that is embedded in the rotor core, wherein: a coolant supply port that supplies a coolant to the rotor core is provided in the shaft, and at least two electric steel plates of the plurality of electric steel plates each include a first portion that has a first thickness in a rotational axis direction and a second portion that has a second thickness in the rotational axis direction, which is thinner than the first portion, the second portion extending in a radial direction and configuring a flow path through which the coolant supplied from the coolant supply port of the shaft flows.

Abstract: A rotor for a rotating electrical machine, the rotor including: a rotor core having a plurality of magnetic poles; and a plurality of permanent magnets arranged in the rotor core, wherein: in each of the plurality of magnetic poles, the rotor core has a plurality of holes including a first hole and a second hole in each of which a respective permanent magnet of the plurality of permanent magnets having a planar magnetic pole surface is arranged.

Abstract: A manufacturing method of a core for a rotary electric machine, the method includes inserting a permanent magnet that is not yet magnetized in a magnet insertion hole that is formed in a rotor core; injecting a magnet fixing material in the magnet insertion hole; curing the magnet fixing material by heating the rotor core and the permanent magnet; and magnetizing the permanent magnet before a temperature of the rotor core and the permanent magnet decreases to a normal temperature, after the curing of the magnet fixing material.

Abstract: A manufacturing method of a core for a rotary electric machine, the method includes inserting a permanent magnet that is not yet magnetized in a magnet insertion hole that is formed in a rotor core; injecting a magnet fixing material in the magnet insertion hole; curing the magnet fixing material by heating the rotor core and the permanent magnet; and magnetizing the permanent magnet before a temperature of the rotor core and the permanent magnet decreases to a normal temperature, after the curing of the magnet fixing material.

Abstract: A rotor that includes a shaft; a rotor core that is attached to the shaft and that is configured of a plurality of electric steel plates that are stacked; and a permanent magnet that is embedded in the rotor core, wherein: a coolant supply port that supplies a coolant to the rotor core is provided in the shaft, and at least two electric steel plates of the plurality of electric steel plates each include a first portion that has a first thickness in a rotational axis direction and a second portion that has a second thickness in the rotational axis direction, which is thinner than the first portion, the second portion extending in a radial direction and configuring a flow path through which the coolant supplied from the coolant supply port of the shaft flows.

Abstract: A rotating electric machine includes a rotor and a stator. The rotor includes a plurality of rotor portions provided by circumferentially dividing the rotor. The rotor portions are each movable radially outward. The rotating electric machine is structured such that the rotor portions each move radially outward so as to increase a radial gap between the rotor and the stator.

Abstract: A rotor for a rotating electrical machine, the rotor including: a rotor core having a plurality of magnetic poles; and a plurality of permanent magnets arranged in the rotor core, wherein: in each of the plurality of magnetic poles, the rotor core has a plurality of holes including a first hole and a second hole in each of which a respective permanent magnet of the plurality of permanent magnets having a planar magnetic pole surface is arranged.

Abstract: A rotary electric machine that includes a rotor; and a permanent magnet, wherein: in an axially orthogonal section orthogonal to a rotational axis of the rotor in an attached state in which the permanent magnet is attached to the rotor, the permanent magnet has an uneven shape, in which both of two magnetic pole surfaces are repeatedly projected and recessed with a curvature that is larger than an average curvature of magnetic pole surfaces.

Abstract: A stator that includes a core having a plurality of slots extending in an axial direction and arranged in a circumferential direction; and a coil wound in the core, wherein the coil includes slot accommodated portions that are placed in the slots, a coil end portion that projects from the core in the axial direction, and a plurality of jumper portions that are extended from the slot accommodated portions and disposed outside the coil end portion in the axial direction and that are at least either first jumper portions connected to a neutral terminal that forms a neutral point and second jumper portions connected to a power line terminal that is connected to a power supply.

Abstract: A rotor that includes a rotor core having a plurality of electrical steel sheets stacked in an axial direction; and a permanent magnet embedded in the rotor core and disposed so as to face a stator, wherein: the electrical steel sheet has, in each magnetic pole: a plurality of holes including at least a magnet insertion hole in which the permanent magnet is inserted, a stator-side bridge that is a bridge between one of the holes and a stator opposing surface of the rotor core, an inter-hole bridge that is a bridge between two of the holes which are adjacent to each other in a circumferential direction, and a non-bridge n that is a portion other than the stator-side bridge and the inter-hole bridge.

Abstract: A rotor that includes a rotor core having a plurality of electrical steel sheets stacked in an axial direction; and a permanent magnet embedded in the rotor core and disposed so as to face a stator, wherein: the electrical steel sheet has a magnet insertion hole in which the permanent magnet is inserted and a positioning protrusion protruding along a non-pole face of the permanent magnet into the magnet insertion hole, and in at least a part of the plurality of electrical steel sheets, the positioning protrusion is harder than a general portion that is a portion other than the positioning protrusion.

Abstract: A stator that includes a core having a plurality of slots extending in an axial direction and arranged in a circumferential direction; and a coil wound in the core, wherein the coil includes slot accommodated portions that are placed in the slots, a coil end portion that projects from the core in the axial direction, and a plurality of jumper portions that are extended from the slot accommodated portions and disposed outside the coil end portion in the axial direction and that are at least either first jumper portions connected to a neutral terminal that forms a neutral point and second jumper portions connected to a power line terminal that is connected to a power supply.

Abstract: In a heat exchanger that includes an expanded part of a duct, a heat-transfer tube bundle accommodating duct, and a plurality of heat-transfer tube bundles provided in the heat-transfer tube bundle accommodating duct in a flow direction of flue gas with a distance therebetween, a bare-tube-part upstream-side regulating plate and a bare-tube-part downstream-side regulating plate at an upstream side and a downstream side of a bare tube part of each of the heat-transfer tube bundles and a plurality of regulating plates in an introducing unit arranged either in the expanded part of a duct or in the heat-transfer tube bundle accommodating duct on an upstream side to the heat-transfer tube bundle are provided. A drift at the bare tube part of the heat-transfer tube bundles can be significantly reduced.

Abstract: A lubricating structure for a speed reducer includes: a case; an electric motor arranged inside the case; a reduction gear configured to rotate interlocking with an output shaft of the electric motor; a pair of drive axles configured to be driven to rotate by torque transmitted from the electric motor via the reduction gear; and a catch tank configured to store part of oil by scooping up the oil with the use of the reduction gear. The reduction gear is located on a front side of the vehicle with respect to a rotor of the electric motor, and is arranged such that a lower-side common tangent of an outer peripheral circle of the reduction gear and an outer peripheral circle of the rotor is inclined upward from the front side of the vehicle toward a rear side of the vehicle at a predetermined angle with respect to a horizontal line.

Abstract: A rotor (10) for a rotary electric machine has a plurality of magnetic poles (24) provided at intervals, in a circumferential direction, at the outer periphery of a rotor core (12). Each of the magnetic poles (24) has a first permanent magnet (26) buried in the center of the magnetic pole, and a pair of second permanent magnets (28) that are buried on both sides of the first permanent magnet (26) in the circumferential direction, and that are disposed such that a mutual spacing between the pair of the second permanent magnets (28) becomes narrower inward in the radial direction. A narrowest spacing between the pair of second permanent magnets (28) is set to be wider than a longitudinal-direction width of the first permanent magnet (26) in a magnetic path region (30) that is defined by the first permanent magnet (26) and the pair of second permanent magnets (28).

Abstract: In a rotor for a rotary electric machine, a plurality of magnetic poles are provided in a radially outer portion of the rotor iron core, at intervals in the circumferential direction. Each magnetic pole includes a pair of permanent magnets disposed apart from each other in the circumferential direction, and a magnetic flux-restraining hole that is formed and extended radially inwardly between radially inner end portions of the permanent magnets and that restrains flow of magnetic flux. The magnetic flux-restraining hole is extended so as to project beyond a position of the radially inner end portions to a radially outer side, between the pair of permanent magnets.

Abstract: A rotary electric machine configured with a stator, rotor, and permanent magnets disposed in an inverted V-shape that becomes gradually narrower from a side of a center of rotation of the rotor. The rotor is provided with a plurality of support portions that extend radially about the center of rotation, and gap portions are respectively formed in correspondence with the plurality of support portions at positions spaced by a predetermined distance from an edge portion of the permanent magnets in a flowing direction of magnetic flux between the permanent magnets and the stator. The gap portions are formed to have such a length that causes magnetic saturation during generation of low torque in a low-current state and that causes no magnetic saturation during generation of maximum torque in a high-current state in which electricity at a high current is supplied to the stator coil.

Abstract: A rotor (10) for a rotary electric machine has a plurality of magnetic poles (24) provided at intervals, in a circumferential direction, at the outer periphery of a rotor core (12). Each of the magnetic poles (24) has a first permanent magnet (26) buried in the center of the magnetic pole, and a pair of second permanent magnets (28) that are buried on both sides of the first permanent magnet (26) in the circumferential direction, and that are disposed such that a mutual spacing between the pair of the second permanent magnets (28) becomes narrower inward in the radial direction. A narrowest spacing between the pair of second permanent magnets (28) is set to be wider than a longitudinal-direction width of the first permanent magnet (26) in a magnetic path region (30) that is defined by the first permanent magnet (26) and the pair of second permanent magnets (28).

Abstract: A cooling structure for a stator configured with a cooling medium distributing member formed with a plurality of discharge openings, and a distributing path, wherein the distributing path has a plurality of chambers separated by a partition wall, and an inter-chamber communication passage that is formed in the partition wall and communicates between the adjacent chambers. The cooling medium distributing member includes at least one cooling medium distributing chamber that divides the distributing path to a plurality of inter-chamber communication passages, and also includes a plurality of discharge chambers. The plurality of inter-chamber communication passages formed in the partition wall are formed with a ratio of an opening width between the different inter-chamber communication passages set according to a ratio of a sum of opening cross-sectional areas of all of the cooling medium discharge openings which are located downstream of each of the inter-chamber communication passages.

Abstract: An iron rotor core includes a first permanent magnet in an outer peripheral portion of the iron rotor core, second permanent magnets on both circumferential sides of the first permanent magnet and arranged in a generally V-shaped configuration opening radially outward, and a first region provided opposite to the first permanent magnet radially inside the region between the second permanent magnets and having a low magnetic permeability. A q-axis magnetic flux path is formed in an iron core region among the first permanent magnet, the second permanent magnets and the first region, and a central portion thereof is formed between the first permanent magnet and the first region, and entrance/exit portions of the q-axis magnetic flux path formed between the second permanent magnets and second regions provided on both circumferential sides of the first permanent magnet and having a low magnetic permeability with generally the same width.