Abstract: A connection structure for connecting between a stator coil of an electric motor and a connector connected to a power source. The connection structure includes: (a) at least one first connection line each connected to the stator coil; (b) at least one first terminal each fixed to a connector-side end portion of a corresponding of the at least one first connection line; (c) a plurality of second connection lines connected to respective terminal portions of the connector; (d) at least one second terminal each fixed to coil-side end portions of the respective second connection lines; and (e) a terminal block including at least one attached portion. Each of the at least one first terminal and a corresponding one of the at least one second terminal are attached to a corresponding one of the at least one attached portion of the terminal block, and are connected to each other.

Abstract: A rotating electric machine rotor according to the present disclosure includes: a rotor shaft extending in a direction of an axis of rotation; and a rotor core fixedly fitted to an outer circumference of the rotor shaft and formed of laminated steel sheets. Further, an inner diameter of the rotor core is smaller than an outer diameter of the rotor shaft. Furthermore, an inner edge part of each laminated steel sheet is made thinner than an outer edge part thereof, and the inner edge part abuts on an outer peripheral surface of the rotor shaft and is curved along the outer peripheral surface of the rotor shaft in the direction of the axis of rotation.

Abstract: A rotating electric machine rotor according to the present disclosure includes: a rotor shaft extending in a direction of an axis of rotation; and a rotor core fixedly fitted to an outer circumference of the rotor shaft and formed of laminated steel sheets. Further, an inner diameter of the rotor core is smaller than an outer diameter of the rotor shaft. Furthermore, an inner edge part of each laminated steel sheet is made thinner than an outer edge part thereof, and the inner edge part abuts on an outer peripheral surface of the rotor shaft and is curved along the outer peripheral surface of the rotor shaft in the direction of the axis of rotation.

Abstract: A stator of a rotary electric machine comprises a stator core and a stator coil that is wound around the stator core. The stator coil includes a first segment coil, a second segment coil, and a first connecting member that has a first fitting recess portion at a first end of the first connecting member and a second fitting recess portion at a second end of the first connecting member, the first connecting member connecting the first segment coil and the second segment coil by fitting the first segment coil into the first fitting recess portion and by fitting the second segment coil into the second fitting recess portion.

Abstract: A stator of a rotary electric machine in which a power line to be connected to a coil can be fixed stably without requiring an additional part. The stator of a rotary electric machine has a stator core which has a plurality of radially protruded teeth at intervals in a circumferential direction; three-phase coils which are wound around the teeth and which each have a coil end protruding from an axial end face of the stator core; power lines which are respectively connected to three input-side ends of the three-phase coils via a joint part; and a resin mold which integrally fixes the coil end and the joint part.

Abstract: A rotor for a rotary electric machine includes a rotor core including at least one low-rigidity portion rigidity; a plurality of magnets; a rotary shaft; a washer contacting at least one end surface of the rotor core in an axial direction of the rotor core; and a nut. An outer circumferential end of the washer is disposed more radially inward than the magnet holes, the washer has an outer circumferential shape with recesses and projections in which a distance from a rotation center to the outer circumferential end of the washer periodically varies, and a distance from the outer circumferential end of the washer to each low-rigidity portion is greater than a distance from the outer circumferential end of the washer to each magnet hole.

Abstract: This disclosure relates to a method of manufacturing a laminated core including a plurality of poles arranged side by side in a circumferential direction, each pole having three or more magnet housing holes and magnets housed in the magnet housing holes. The manufacturing method includes: a step of preparing a lamination having the magnet housing holes; a step of injecting sealing resin into a pair of magnet housing holes arranged at symmetric positions with respect to a line extending in a radial direction of the lamination, with the magnets being disposed in the pair of respective magnet housing holes; and a step of injecting sealing resin into another magnet housing hole, with the magnet being disposed in the magnet housing hole.

Abstract: A stator of a rotary electric machine comprises a stator core and a stator coil that is wound around the stator core. The stator coil includes a first segment coil, a second segment coil, and a first connecting member that has a first fitting recess portion at a first end of the first connecting member and a second fitting recess portion at a second end of the first connecting member, the first connecting member connecting the first segment coil and the second segment coil by fitting the first segment coil into the first fitting recess portion and by fitting the second segment coil into the second fitting recess portion.

Abstract: A stator for a rotary electric machine includes a stator core, three-phase coils, and a neutral point connection conductor. The three-phase coils are wound around the stator core. The neutral point connection conductor is connected to each of the three-phase coils. The neutral point connection conductor includes a linear conductor that is bent. The linear conductor includes two end portions and an overlapping portion in which the conductor is folded back and doubled up. One of the two end portions is connected to one-phase coil of the three-phase coils. The other of the two end portions is connected to another-phase coil of the three-phase coils. The overlapping portion is connected to the remaining-phase coil of the three-phase coils.

Abstract: A stator of a rotary electric machine in which a power line to be connected to a coil can be fixed stably without requiring an additional part. The stator of a rotary electric machine has a stator core which has a plurality of radially protruded teeth at intervals in a circumferential direction; three-phase coils which are wound around the teeth and which each have a coil end protruding from an axial end face of the stator core; power lines which are respectively connected to three input-side ends of the three-phase coils via a joint part; and a resin mold which integrally fixes the coil end and the joint part.

Abstract: A stator includes a stator core, a plurality of phase windings, a neutral line and a fixing portion. The plurality of phase windings is wounded a plurality of times by a predetermined winding method crossing between a plurality of slots. One lead end of each phase winding is a neutral point connecting portion, and the one lead end is pulled out from an axially end portion of the stator core. The neutral line connects the neutral point connecting portions of the phase windings of different phases together. The neutral line is separate from the phase windings. The fixing portion fixes a first phase winding that is connected to the neutral line. A second phase winding is adjacent to the first phase winding together.

Abstract: A rotor for a rotary electric machine includes a rotor core including at least one low-rigidity portion rigidity; a plurality of magnets; a rotary shaft; a washer contacting at least one end surface of the rotor core in an axial direction of the rotor core; and a nut. An outer circumferential end of the washer is disposed more radially inward than the magnet holes, the washer has an outer circumferential shape with recesses and projections in which a distance from a rotation center to the outer circumferential end of the washer periodically varies, and a distance from the outer circumferential end of the washer to each low-rigidity portion is greater than a distance from the outer circumferential end of the washer to each magnet hole.

Abstract: A thermistor includes a case having a bottom section at one end and an opening section at the other end, a thermistor element housed in the case, a conducting wire housed in the case and connected to the thermistor element, and a lead wire connected to the conducting wire. The lead wire has a first portion including an insulating coating, and a second portion connected to the conducting wire and exposed from the insulating coating. A resin is filled up to a position away from an end edge of the opening section toward the bottom section so as to enclose at least the thermistor element, the conducting wire, and the second portion. The first portion is guided out of the resin to the outside of the case. An inner peripheral surface of the opening section is curved so as to increase an opening area of the opening section.

Abstract: A stator includes a stator core, a stator attachment and a plurality of segment coils. The stator core has a yoke portion, stator teeth and stator slots. The stator attachment is placed on an axial end surface of the stator core. The stator attachment includes attachment teeth, attachment slots and varnish guide faces. Each of the attachment slots communicates with an axial open end of each of the stator slots. The varnish guide faces approach an axially central side toward an attachment slot side in the radial direction. The segment coils are fixed to the stator core with varnish. Each segment coils includes plurality of conductor segments. The conductor segment is bent by making contact with the attachment teeth.

Abstract: The stator includes a stator core, a plurality of phase windings, a neutral line and a fixing member. The plurality of phase windings are wounded a plurality of times by a predetermined winding method crossing between a plurality of slots. One lead end of each phase winding is supplied with a phase current. The other lead end of each phase winding is a neutral point connecting portion. The other lead end is pulled out from an axially end portion of the stator core. The neutral line connects the neutral point connecting portions of the phase windings of different phases together. The neutral line is separate from the phase windings. The fixing member fixes the neutral line to a yoke portion via an intermediate member. The intermediate member is made of resin.

Abstract: This disclosure relates to a method of manufacturing a laminated core including a plurality of poles arranged side by side in a circumferential direction, each pole having three or more magnet housing holes and magnets housed in the magnet housing holes. The manufacturing method includes: a step of preparing a lamination having the magnet housing holes; a step of injecting sealing resin into a pair of magnet housing holes arranged at symmetric positions with respect to a line extending in a radial direction of the lamination, with the magnets being disposed in the pair of respective magnet housing holes; and a step of injecting sealing resin into another magnet housing hole, with the magnet being disposed in the magnet housing hole.

Abstract: A stator for a rotary electric machine includes a stator core, three-phase coils, and a neutral point connection conductor. The three-phase coils are wound around the stator core. The neutral point connection conductor is connected to each of the three-phase coils. The neutral point connection conductor includes a linear conductor that is bent. The linear conductor includes two end portions and an overlapping portion in which the conductor is folded back and doubled up. One of the two end portions is connected to one-phase coil of the three-phase coils. The other of the two end portions is connected to another-phase coil of the three-phase coils. The overlapping portion is connected to the remaining-phase coil of the three-phase coils.

Abstract: A rotary electric machine rotor includes a rotor core, a rotor shaft, and a nut portion. The rotor core is made up of stacked thin magnetic plates. The rotor shaft has, on one end side, a receiving portion that abuts against one end surface in an axial direction of the rotor core, and has, on the other end side, an outer diameter threaded structure. The nut portion meshes with the outer diameter threaded structure of the rotor shaft. A position, on the rotor shaft, of a contact surface between the nut portion and the rotor core is positioned farther to the other end side in the axial direction than the outer diameter threaded structure, when the rotor core is fixed to the rotor shaft by the nut portion being fastened to the outer diameter threaded structure of the rotor shaft.

Abstract: A rotary electric machine includes a rotor and a rotor shaft. The rotor has a cooling flow passage and the rotor shaft is fixed to an inner peripheral surface of the rotor. The rotor shaft has a hollow part to which the liquid coolant is supplied, a coolant flow inlet that provides communication between the hollow part and the cooling flow passage, and a coolant supply shaft extending through the hollow part. The coolant supply shaft has a coolant discharge port that discharges the liquid coolant to the hollow part. A position in a rotor axial direction of the coolant flow inlet deviates from a position in the rotor axial direction of the coolant discharge port.

Abstract: A thermistor includes a case having a bottom section at one end and an opening section at the other end, a thermistor element housed in the case, a conducting wire housed in the case and connected to the thermistor element, and a lead wire connected to the conducting wire. The lead wire has a first portion including an insulating coating, and a second portion connected to the conducting wire and exposed from the insulating coating. A resin is filled up to a position away from an end edge of the opening section toward the bottom section so as to enclose at least the thermistor element, the conducting wire, and the second portion. The first portion is guided out of the resin to the outside of the case. An inner peripheral surface of the opening section is curved so as to increase an opening area of the opening section.