Abstract: A motor includes: a stator iron core; a frame housing the stator iron core; and a flange including a tubular portion formed in a tubular shape. The frame includes, along an extending direction of a rotation shaft of the motor, a stator housing that houses the stator iron core and a fitted portion that is fitted to the flange. The tubular portion covers at least a half of an area of the stator housing, the area housing the stator iron core.

Abstract: A stator includes: a stator core having an annular portion and a plurality of teeth that is radially protruded outward from an outer periphery of the annular portion; a molded coil that has an air-core portion into which the teeth of the stator core are inserted and that is stored in a slot formed between the teeth of the stator core; and a yoke that covers a circumference of the molded coil stored in the slot of the stator core. The molded coil has an arc-shaped cross-section, and the molded coil includes a resin-molded portion and an exposed portion exposed at the molded portion.

Abstract: A stator includes: a stator core having an annular portion and a plurality of teeth that is radially protruded outward from an outer periphery of the annular portion; a molded coil that has an air-core portion into which the teeth of the stator core are inserted and that is stored in a slot formed between the teeth of the stator core; and a yoke that covers a circumference of the molded coil stored in the slot of the stator core. The molded coil has an arc-shaped cross-section, and the molded coil includes a resin-molded portion and an exposed portion exposed at the molded portion.

Abstract: A three-phase electromagnetic motor includes: a stator that is formed by winding a winding around a magnetic pole formed between slots of a stator core; and a rotor that is disposed inside the stator and has a permanent magnet. The three-phase electromagnetic motor is formed of 8n poles and 6n slots (n is a natural number). 3n windings are wound around every other magnetic pole among a plurality of magnetic poles of the stator core.

Abstract: Provided is a method for manufacturing a permanent magnet type motor in which a permanent magnet is incorporated into a rotor cores stack, the method including a process of forming the rotor core stack, by combining a plurality of core sheets having a magnet insertion hole with a core sheet not having the magnet insertion hole, and disposing the core sheet not having the magnet insertion hole in one end of a stacking direction; a process of injecting a low-viscosity adhesive into the magnet insertion hole in which one end is blocked by the core sheets; and a process of bonding and fixing the permanent magnet by inserting the permanent magnet into the magnet insertion hole into which the low-viscosity adhesive is injected.

Abstract: In a rotor of a permanent magnet-embedded motor, a plurality of permanent magnets is arranged in one magnet housing of a rotor core. A rib portion which connects an outer peripheral portion of the rotor core with an inner peripheral portion of the rotor core is arranged per plurality of magnetic poles.

Abstract: A stator includes: a stator core having an annular portion and a plurality of teeth that is radially protruded outward from an outer periphery of the annular portion; a molded coil that has an air-core portion into which the teeth of the stator core are inserted and that is stored in a slot formed between the teeth of the stator core; and a yoke that covers a circumference of the molded coil stored in the slot of the stator core. The molded coil has an arc-shaped cross-section, and the molded coil includes a resin-molded portion and an exposed portion exposed at the molded portion.

Abstract: A motor structure includes: a frame accommodating a stator and a rotor therein; an output-side bracket; an output-side bearing; a housing portion for supporting the output-side bearing, the housing portion being formed integrally with an output-side end of the frame and serving as a first fitting protrusion to be fitted into the output-side bracket; a flange portion formed integrally with an anti-output-side end of the frame and having an opening; an anti-output-side bearing; an anti-output-side bracket for accommodating the anti-output-side bearing therein; and a protrusion formed integrally with the anti-output-side bracket to be fitted into the opening of the flange portion.

Abstract: A ground wire connection structure for a motor includes: a frame that has electrical conductivity; a flange that is integrated with the frame on one axial end surface of the frame and has electrical conductivity; a protrusion that is protruded outward from a flange surface of the flange and has a through hole; and a conductive pin that has a press-fit portion press-fitted and fixed into the through hole, a diameter-increased head portion, and a solder cup protruded from the head portion to allow an exposed tip end of a ground wire to be inserted and joined into the inside.

Abstract: A motor includes: a stator iron core; a frame housing the stator iron core; and a flange including a tubular portion formed in a tubular shape. The frame includes, along an extending direction of a rotation shaft of the motor, a stator housing that houses the stator iron core and a fitted portion that is fitted to the flange. The tubular portion covers at least a half of an area of the stator housing, the area housing the stator iron core.

Abstract: A stator core includes a first core sheet having a plurality of teeth that is radially protruded outward and a teeth coupling portion that couples the plurality of teeth, and at least two kinds of second core sheets having a plurality of teeth that is radially protruded outward and slot openings that are provided between the plurality of teeth. The first and second core sheets are laminated to form a stack structure, and, in the second core sheets of an identical kind, the slot openings are identical in opening angle and are evenly distributed in a circumferential direction.

Abstract: Provided is a permanent magnet type motor capable of improving a demagnetization proof stress almost without lowering a generated torque, and reducing a torque ripple and a cogging torque by improving a gap magnetic flux density distribution. Portions having a low demagnetization proof stress of a plurality of permanent magnets incorporated into a rotor core are partially and equally demagnetized.

Abstract: A three-phase permanent magnet type motor has a stator in which a plurality of windings wound in a same direction are disposed, and the number of slots is 12n; a rotor in which the number of poles of the permanent magnet is 10n or 14n; and multilayer wiring boards for performing the connection so as to be 2m parallel. The three-phase permanent magnet type motor has a circuit configuration in which, among U-phase, V-phase, and W-phase, adjacent in-phase windings are connected in parallel and are connected in series with a like-pole winding of a symmetrical in-phase second winding group facing at 6-slot pitch angle, when a center of a first winding group of the adjacent in-phase windings is set as a reference axis, and in-phase transition wiring patterns are disposed on the same layer of the multilayer wiring boards in a line symmetrical manner.

Abstract: A motor structure includes: a frame accommodating a stator and a rotor therein; an output-side bracket; an output-side bearing; a housing portion for supporting the output-side bearing, the housing portion being formed integrally with an output-side end of the frame and serving as a first fitting protrusion to be fitted into the output-side bracket; a flange portion formed integrally with an anti-output-side end of the frame and having an opening; an anti-output-side bearing; an anti-output-side bracket for accommodating the anti-output-side bearing therein; and a protrusion formed integrally with the anti-output-side bracket to be fitted into the opening of the flange portion.

Abstract: A ground wire connection structure for a motor includes: a frame that has electrical conductivity; a flange that is integrated with the frame on one axial end surface of the frame and has electrical conductivity; a protrusion that is protruded outward from a flange surface of the flange and has a through hole; and a conductive pin that has a press-fit portion press-fitted and fixed into the through hole, a diameter-increased head portion, and a solder cup protruded from the head portion to allow an exposed tip end of a ground wire to be inserted and joined into the inside.

Abstract: A stator includes: a stator core having an annular portion and a plurality of teeth that is radially protruded outward from an outer periphery of the annular portion; a molded coil that has an air-core portion into which the teeth of the stator core are inserted and that is stored in a slot formed between the teeth of the stator core; and a yoke that covers a circumference of the molded coil stored in the slot of the stator core. The molded coil has an arc-shaped cross-section, and the molded coil includes a resin-molded portion and an exposed portion exposed at the molded portion.

Abstract: A stator core includes a first core sheet having a plurality of teeth that is radially protruded outward and a teeth coupling portion that couples the plurality of teeth, and at least two kinds of second core sheets having a plurality of teeth that is radially protruded outward and slot openings that are provided between the plurality of teeth. The first and second core sheets are laminated to form a stack structure, and in the second core sheets of an identical kind, the slot openings are identical in opening angle and are evenly distributed in a circumferential direction.

Abstract: A three-phase electromagnetic motor includes: a stator that is formed by winding a winding around a magnetic pole formed between slots of a stator core; and a rotor that is disposed inside the stator and has a permanent magnet. The three-phase electromagnetic motor is formed of 8n poles and 6n slots (n is a natural number). 3n windings are wound around every other magnetic pole among a plurality of magnetic poles of the stator core.

Abstract: A generator core that increases the amount of power generated by a generator is provided. A plurality of magnetic steel sheets including non-divided magnetic steel sheets and divided magnetic steel sheets are stacked on each other to form a plurality of divided cores. The divided magnetic steel sheets are disposed to form a gap portion that crosses a magnetic path in one magnetic steel sheet. Each gap portion is positioned and shaped such that magnetic resistances of magnetic pole portions of the plurality of divided cores are not different from each other.

Abstract: A rotor for a permanent magnet type motor has rotor core blocks in a multistage in an axial direction in which permanent magnets of a plurality of magnetic poles are incorporated, and has a stage skew structure in which the rotor core blocks of each stage are integrally formed so as to be shifted from each other in a rotational direction. The rotor core blocks of each stage have a flux barrier portion for blocking a short circuit magnetic flux between the magnetic poles, between the magnetic poles of the permanent magnet. A skew angle is set so that the flux barrier portions of the magnetic poles between the adjacent stages at least partially overlap each other in the rotor core blocks of different stages.