Abstract: A motor includes a rotor fixed to a rotary shaft, a stator arranged so as to surround the rotor with a gap from the rotor in a radial direction orthogonal to an axis direction of the rotary shaft, and a case accommodating the rotor and the stator. The rotor includes a plurality of rotor cores made from a soft magnetic material, and a rotor fixing member that fixes the rotor cores. The stator includes a plurality of stator cores made from a soft magnetic material, a stator fixing member that fixes the stator cores, and coils wound around the stator cores, respectively. The motor includes at least two sets of the rotor and the stator, and the sets are stacked in an axis direction of the rotary shaft.

Abstract: In an axial gap motor, a rotor includes a plurality of rotor cores fixed in a circumferential direction of a rotor base, and a stator includes a plurality of stator cores fixed in a circumferential direction of a stator base, and coils wound around the stator cores. End faces of each of the rotor cores and end faces of the corresponding stator core are opposed to each other while being exposed to each other.

Abstract: In an axial gap motor, a rotor includes a plurality of rotor cores fixed in a circumferential direction of a rotor base, and a stator includes a plurality of stator cores fixed in a circumferential direction of a stator base, and coils wound around the stator cores. End faces of each of the rotor cores and end faces of the corresponding stator core are opposed to each other while being exposed to each other.

Abstract: A vehicle battery pack includes: a battery; a radiator; a passage via which the battery is connected to the radiator; a pump configured to circulate coolant between the battery and the radiator through the passage; and a case in which the battery, the radiator, the passage, and the pump are accommodated, the case having an intake opening and a discharge opening for external air.

Abstract: A motor includes a rotor fixed to a rotary shaft, a stator arranged so as to surround the rotor with a gap from the rotor in a radial direction orthogonal to an axis direction of the rotary shaft, and a case accommodating the rotor and the stator. The rotor includes a plurality of rotor cores made from a soft magnetic material, and a rotor fixing member that fixes the rotor cores. The stator includes a plurality of stator cores made from a soft magnetic material, a stator fixing member that fixes the stator cores, and coils wound around the stator cores, respectively. The motor includes at least two sets of the rotor and the stator, and the sets are stacked in an axis direction of the rotary shaft.

Abstract: Provided is a rare earth magnet that allows suppressing deterioration of magnetic properties and a method for manufacturing the same. The rare earth magnet of the present disclosure includes a magnet body containing a rare earth element R1, a transition metal element T, and boron B and includes a main phase. A region in the vicinity of a corner portion of the magnet body of a constituent surface constituting a surface of the magnet body is a processed surface on which a removal process has been performed, and a region closer to a center than the region in the vicinity of the corner portion of the constituent surface is a non-processed surface on which the removal process is not performed.

Abstract: In an axial gap motor, a rotor includes a plurality of rotor cores fixed in a circumferential direction of a rotor base, and a stator includes a plurality of stator cores fixed in a circumferential direction of a stator base, and coils wound around the stator cores. End faces of each of the rotor cores and end faces of the corresponding stator core are opposed to each other while being exposed to each other.

Abstract: A vehicle battery pack includes: a battery; a radiator; a passage via which the battery is connected to the radiator; a pump configured to circulate coolant between the battery and the radiator through the passage; and a case in which the battery, the radiator, the passage, and the pump are accommodated, the case having an intake opening and a discharge opening for external air.

Abstract: A forged component having a chemical composition including, by mass %, C: 0.30 to 0.45%, Si: 0.05 to 0.35%, Mn: 0.50 to 0.90%, P: 0.030 to 0.070%, S: 0.040 to 0.070%, Cr: 0.01 to 0.50%, Al: 0.001 to 0.050%, V: 0.25 to 0.35%, Ca: 0 to 0.0100%, N: 0.0150% or less, and the balance being Fe and unavoidable impurities, and satisfying formula 1. Metal structure is a ferrite pearlite structure, and a ferrite area ratio is 30% or more. Vickers hardness is in the range of 320 to 380 HV. 0.2% yield strength is 800 MPa or more. A Charpy V-notch impact value is in the range of 7 to 15 J/cm2.

Abstract: A forged component having a chemical composition including, by mass %, C: 0.30 to 0.45%, Si: 0.05 to 0.35%, Mn: 0.50 to 0.90%, P: 0.030 to 0.070%, S: 0.040 to 0.070%, Cr: 0.01 to 0.50%, Al: 0.001 to 0.050%, V: 0.25 to 0.35%, Ca: 0 to 0.0100%, N: 0.0150% or less, and the balance being Fe and unavoidable impurities, and satisfying formula 1. Metal structure is a ferrite pearlite structure, and a ferrite area ratio is 30% or more. Vickers hardness is in the range of 320 to 380 HV. 0.2% yield strength is 800 MPa or more. A Charpy V-notch impact value is in the range of 7 to 15 J/cm2.

Abstract: According to the present invention, a process for producing an aluminum alloy material, whereby reduction in toughness and in fatigue strength of the aluminum alloy material can be inhibited even after solution treatment is provided. Also, the following is provided: a process for producing an aluminum alloy material comprising at least the steps of subjecting a heat treatable aluminum alloy material to solution treatment and applying aging treatment to the aluminum alloy material subjected to solution treatment, which further comprises the following step between the solution treatment step and the aging treatment step: the step of subjecting the aluminum alloy material to plastic forming in a manner such that a given amount of equivalent strain is imparted to the aluminum alloy material from at least two directions while the aluminum alloy material subjected to solution treatment is maintained under temperature conditions that do not cause softening of the aluminum alloy material by over-aging.

Abstract: According to the present invention, a process for producing an aluminum alloy material, whereby reduction in toughness and in fatigue strength of the aluminum alloy material can be inhibited even after solution treatment is provided. Also, the following is provided: a process for producing an aluminum alloy material comprising at least the steps of subjecting a heat treatable aluminum alloy material to solution treatment and applying aging treatment to the aluminum alloy material subjected to solution treatment, which further comprises the following step between the solution treatment step and the aging treatment step: the step of subjecting the aluminum alloy material to plastic forming in a manner such that a given amount of equivalent strain is imparted to the aluminum alloy material from at least two directions while the aluminum alloy material subjected to solution treatment is maintained under temperature conditions that do not cause softening of the aluminum alloy material by over-aging.