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    • 8. 发明公开
    • AXIAL FLUX MOTOR, POWERTRAIN, AND ELECTRIC DEVICE
    • EP4346068A1
    • 2024-04-03
    • EP23200072.9
    • 2023-09-27
    • Huawei Digital Power Technologies Co., Ltd.
    • HOU, JiningSHI, ChaojieLAN, Hua
    • H02K5/173H02K7/00H02K21/24
    • This application provides an axial motor, a powertrain, and an electric device. The axial flux motor includes a motor shaft, a double-row angular contact ball bearing, and a stator. The double-row angular contact ball bearing is sleeved or the motor shaft and is fixedly connected to the motor shaft through a bearing inner ring of the double-row angular contact ball bearing. The stator is sleeved or the motor shaft through the double-row angular contact ball bearing, and the stator is fixedly connected to a bearing outer ring, so that the motor shaft can rotate relative to the stator. In this application, the double-row angular contact ball bearing is used in the axial motor, and due to a strong axial bearing capability of the double-row angular contact ball bearing, the double-row angular contact ball bearing can bear axial force generated through interaction between the stator and a rotor. Therefore, durability of the axial flux motor is improved. In addition, because different models of double-row angular contact ball bearings have different clearances, the stator and the motor shaft may be adapted by selecting the models, and there is no need to manually adjust a bearing clearance. Therefore, mounting difficulty is effectively reduced, and production efficiency is improved.
    • 10. 发明公开
    • ROTARY RECIPROCATING DRIVE ACTUATOR
    • EP4307528A1
    • 2024-01-17
    • EP23185216.1
    • 2023-07-13
    • MITSUMI ELECTRIC CO., LTD.
    • MASAMOTO, KaiTAKAHASHI, YukiKITAMURA, YasutakaKAGAMI, MasaharuOTSUKA, Yuki
    • H02K1/18G02B26/00H02K5/173H02K33/16H02K3/52H02K5/22
    • A rotary reciprocating drive actuator includes: a movable body (10) including a shaft part (13) to which a magnet (32) is fixed at an outer circumference of the shaft part (13), the movable body (10) being capable of performing a reciprocating rotation about an axis; a base portion (21) including a pair of wall portions (211, 212) for supporting the shaft part (13) via a bearing (22) such that the shaft part (13) is rotatable; and a core assembly (40) including: a core body (400) including a plurality of magnetic poles (410a, 410b) facing an outer circumference of the magnet (32) to sandwich the magnet (32), a coil body (49) that is wound around the core body (400) and that is energized to generate a magnetic flux interacting with the magnet (32) to cause a reciprocating rotation of the movable body (10), and a magnet position holding portion (48) that generates a magnetic attraction force between the magnet position holding portion (48) and the magnet (32) to define a reference position of the reciprocating rotation, the core assembly (40) being fixed to one wall portion (211) of the pair of wall portions (211, 212), in which at least one of the base portion (21), the core body (400), or the core assembly (40) includes a positioning fixation part (215) for positioning and fixing the at least one of the base portion (21), the core body (400), or the core assembly (40) to a fixation target object (800) in a direction parallel to the shaft part (13).