Abstract: A rotor structure and a rotor structure manufacturing method capable of suppressing magnetic flux leakage and exhibiting an excellent torque-up effect are provided.

Abstract: A stator core of an electric motor is provided with a first core block and a second core block formed by laminating a plurality of large-diameter thin plates in a reversed arrangement with respect to each other causing outer circumferential edge burrs of the large-diameter thin plates to face each other, and with a small-diameter thin plate sandwiched between the first core block and the second core block, and having an outer diameter smaller than the cuter diameter of the large-diameter thin plate.

Abstract: A rotor has a first slot and a second slot, each having a substantially rectangular section, the rectangular sections being arranged in a V-shape when viewed from the direction of the rotary axis; and a first permanent magnet and a second permanent magnet, each having a substantially rectangular shape when viewed from the direction of the rotary axis, inserted in the first slot and the second slot, respectively. This rotor further has a communicating portion having a section that is defined by a side connected between the close pair of end points of the rectangular sections of the first and second slots and a side connected between the distant pair of the end points, among the wend points located on the radially inner side when viewed from the direction of the rotational axis.

Abstract: A stator core of an electric motor is provided with a first core block and a second core block formed by laminating a plurality of large-diameter thin plates in a reversed arrangement with respect to each other causing outer circumferential edge burrs of the large-diameter thin plates to face each other, and with a small-diameter thin plate sandwiched between the first core block and the second core block, and having an outer diameter smaller than the cuter diameter of the large-diameter thin plate.

Abstract: A rotor structure and a rotor structure manufacturing method capable of suppressing magnetic flux leakage and exhibiting an excellent torque-up effect are provided.

Abstract: A rotor includes a first slot, a second slot, a first flux barrier, and a second flux barrier. As viewed in a direction of the rotation axis of a rotor core, the substantially rectangular first and second slots are provided in a V-shape pattern. As viewed in the rotation axis direction of the rotor core, the first flux barrier is provided between first and second contact parts, and protrudes toward the outer circumference side from the outer circumferential short side of each of the first and second slots. As viewed in the rotation axis of the rotor core, an outer circumferential wall of the second flux barrier is continuous with the first contact part, and the second flux barrier protrudes from an inner long side of each of the first and second slots.

Abstract: The present invention is to provide a rotor capable of further increasing curvature of a permanent magnet while absorbing strain in the permanent magnet. A rotor having an embedded magnet type structure includes a rotor core having a plurality of slots disposed in a circumferential direction and a plurality of magnet parts respectively stored in the plurality of slots.

Abstract: A stator includes blocks formed by integrating laminated steel plates by crimping. The stator is formed by overlaying a plurality of the blocks in an axial direction of the stator, and is formed such that in a plane that a pair of the blocks face each other, at least one crimping position of one of the blocks and a crimping position of the other of the blocks do not overlap with each other, when the stator is viewed from the axial direction.

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: In a method for manufacturing a stator of the present invention, positions of stamping out the first stator core and the second stator core are respectively set so that an angular difference between respective rolling directions thereof becomes 360 degrees÷(4×motor pole pair number), when laminating the first stator core which is not circular stamped out from a first electromagnetic steel sheet, and the second stator core which is not circular stamped out from a second electromagnetic steel sheet. For the second stator core, orientation of a shortest segment among virtual segments linking opposite sides or diagonals which pass through a center thereof is not orthogonal to the rolling direction, and at least two are stamped out alongside in a width direction.

Abstract: A rotor includes a first slot, a second slot, a first flux barrier, and a second flux barrier. As viewed in a direction of the rotation axis of a rotor core, the substantially rectangular first and second slots are provided in a V-shape pattern. As viewed in the rotation axis direction of the rotor core, the first flux barrier is provided between first and second contact parts, and protrudes toward the outer circumference side from the outer circumferential short side of each of the first and second slots. As viewed in the rotation axis of the rotor core, an outer circumferential wall of the second flux barrier is continuous with the first contact part, and the second flux barrier protrudes from an inner long side of each of the first and second slots.

Abstract: A stator includes blocks formed by integrating laminated steel plates by crimping. The stator is formed by overlaying a plurality of the blocks in an axial direction of the stator, and is formed such that in a plane that a pair of the blocks face each other, at least one crimping position of one of the blocks and a crimping position of the other of the blocks do not overlap with each other, when the stator is viewed from the axial direction.

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 outer shape of a motor is constituted by a stator core. In a cross-sectional view perpendicular to the direction of a rotary shaft of the motor, the outer shape of the stator core is of a shape in which the four corners of a quadrangle are removed. The outer shape of the stator core at each of respective portions from which the four corners have been removed is formed by two straight lines, and angles formed between the straight lines and adjacent sides of the quadrangle are greater than 90° and less than 135°.

Abstract: A rotor has a first slot and a second slot, each having a substantially rectangular section, the rectangular sections being arranged in a V-shape when viewed from the direction of the rotary axis; and a first permanent magnet and a second permanent magnet, each having a substantially rectangular shape when viewed from the direction of the rotary axis, inserted in the first slot and the second slot, respectively. This rotor further has a communicating portion having a section that is defined by a side connected between the close pair of end points of the rectangular sections of the first and second slots and a side connected between the distant pair of the end points, among the wend points located on the radially inner side when viewed from the direction of the rotational axis.

Abstract: The present invention is to provide a rotor capable of further increasing curvature of a permanent magnet while absorbing strain in the permanent magnet. A rotor having an embedded magnet type structure includes a rotor core having a plurality of slots disposed in a circumferential direction and a plurality of magnet parts respectively stored in the plurality of slots.

Abstract: In a method for manufacturing a stator of the present invention, positions of stamping out the first stator core and the second stator core are respectively set so that an angular difference between respective rolling directions thereof becomes 360 degrees÷(4×motor pole pair number), when laminating the first stator core which is not circular stamped out from a first electromagnetic steel sheet, and the second stator core which is not circular stamped out from a second electromagnetic steel sheet. For the second stator core, orientation of a shortest segment among virtual segments linking opposite sides or diagonals which pass through a center thereof is not orthogonal to the rolling direction, and at least two are stamped out alongside in a width direction.

Abstract: A motor is provided with a storage medium for storing test information unique to the motor, acquired by tests in the course of motor manufacturing process. By using test information unique to each individual motor, automatic fine adjustment of each motor is made possible.