Abstract: A motor may include: a stator with a coil; and a rotor radially inside the stator, wherein the rotor includes a rotor shaft, a core supported rotatably with the shaft, and a first end plate attached to a first end of the core, the core including a magnet held in the core, a magnet slot that holds a magnet, and a coolant path extending along an axial direction of the core, the coolant path disposed between a radially-inner end surface of the magnet and the magnet slot, and the first end plate including a flange radially outside the radially-inner end surface of the magnet, the flange protruding toward the core along the axial direction of the core, and the flange being configured to form a cavity between the first end plate and the first end, wherein the cavity delivers the coolant supplied from the rotor shaft to the coolant path.

Abstract: A rotor may include: a rotor shaft; a rotor core attached to the rotor shaft and comprising a plurality of magnet slots and magnets, wherein at least one magnet of the magnets has an elongated cross-sectional shape and is fixed by being pressed against a part of an inner surface defining a corresponding one of the magnet slots of the rotor core. The rotor is configured so that coolant flowing through the rotor shaft reaches a surface of a long side of the at least one magnet that is exposed inward in a radial direction of the rotor core in the corresponding magnet slot and moves along an axial direction of the rotor core.

Abstract: The in-wheel motor unit includes a motor case, a gear case disposed adjacent to the motor case, and a knuckle integrally formed with the gear case.

Abstract: A device includes a storage unit that stores generated challenges which are challenges previously generated, a determination unit that determines whether a newly generated challenge matches any of the generated challenges or not, an output unit that outputs the newly generated challenge as an unused challenge when the determination unit determines that the newly generated challenge does not match any of the generated challenges, and a registration unit that stores the newly generated challenge as a new generated challenge in the storage unit when the determination unit determines that the newly generated challenge does not match any of the generated challenges.

Abstract: A device includes a storage unit that stores generated challenges which are challenges previously generated, a determination unit that determines whether a newly generated challenge matches any of the generated challenges or not, an output unit that outputs the newly generated challenge as an unused challenge when the determination unit determines that the newly generated challenge does not match any of the generated challenges, and a registration unit that stores the newly generated challenge as a new generated challenge in the storage unit when the determination unit determines that the newly generated challenge does not match any of the generated challenges.