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    • 6. 发明公开
    • ELEVATOR APPARATUS
    • EP4328166A1
    • 2024-02-28
    • EP21937848.6
    • 2021-04-20
    • Hitachi, Ltd.
    • ITO YasushiZAMA HidetakaKUBO Yosuke
    • B66B5/18
    • There is provided an elevator device including an emergency stop device operated by an electric actuator capable of reducing a load applied to a motor. The elevator device includes an elevator car; an emergency stop device; a drive mechanism (12 to 19) that drives the emergency stop device; and an electric actuator (10) that operates the drive mechanism, in which the electric actuator includes an operation lever (11) connected to the drive mechanism, a movable member (34A, 34B) that is rotatably connected to the operation lever, an electromagnet portion (35) that attracts the movable member in a standby state of the electric actuator, a feed screw (36) that is screwed with the electromagnet portion, a motor (37) that drives the feed screw, and a guide portion (201) that, in a return operation of the electric actuator, causes the movable member to follow a movement of the electromagnet portion such that the movable member is aligned with respect to the electromagnet portion when the electromagnet portion comes into contact with the movable member by being moved toward the movable member by driving the feed screw using the motor.
    • 7. 发明公开
    • ROTARY ELECTRICAL MACHINE
    • EP4322381A1
    • 2024-02-14
    • EP22815836.6
    • 2022-05-17
    • Hitachi, Ltd.
    • IWANO, RyuuichirouSUTO, Tetsuya
    • H02K9/197H02K3/24H02K9/19H02K11/33
    • The purpose of the present invention is to provide a rotary electrical machine which makes it possible to improve cooling performance without impairing reliability in structural strength. A stator 1 of a rotary electrical machine 100 comprises a stator core 17, a coil 19, and at least one of a connection wire 12 and a jumper wire 13. The coil 19 has a first coil end 10 which is located on one end side of the stator core 17 in the axial direction and a second coil end 11 which is located on the other end side of the stator core 17 in the axial direction. A coolant flow path for cooling the rotor 2 and the stator 1 has: a coolant inflow port 15; a first annular flow path 8 which faces an air gap 3 in the axial direction; a relay flow path 18 which is provided on the second coil end 11 side and which faces the air gap 3 in the axial direction; and a second annular flow path 9 which is in communication with the relay flow path 18 and which is provided as shifted radially outward with respect to the air gap 3. The connection wire 12 and the jumper wire 13 of the coil 19 are provided in the first annular flow path 8.