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公开(公告)号：US12027945B2
公开(公告)日：2024-07-02
申请号：US17615249
申请日：2019-06-05
发明人： Yoshifumi Ajioka , Seiji Haga
摘要： A frame of an electric motor has inlet holes to allow ambient air to flow into an inside of the motor and outlet holes to allow the ambient air entering through the inlet holes to flow out to an outside of the motor. The motor includes a shaft, a rotor, a stator, a fan to rotate integrally with the shaft, and a guide. The guide is disposed outwardly of the fan in the radial direction and has a shape for suppressing foreign materials contained in the ambient air entering through the inlet holes from coming into contact with the stator and the rotor.
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公开(公告)号：US11967879B2
公开(公告)日：2024-04-23
申请号：US17439953
申请日：2019-04-10
发明人： Yoshifumi Ajioka , Kazuki Iwasa , Seiji Haga
摘要： A first bracket in an electric motor includes an inflow path through which outside air flows inside, and an outflow path through which the air having flowed in flows outside. A stator core included in the electric motor includes a first ventilation path that is coupled with the inflow path and a second ventilation path that is coupled with the outflow path. A second bracket includes a third ventilation path that forms a flow path from the first ventilation path to the second ventilation path positioned symmetrically to the first ventilation path with respect to a plane containing a rotation axis. The air having flowed into the inside of the electric motor through the inflow path passes, in order, through the first ventilation path, the third ventilation path, and the second ventilation path, and flows out to the outside of the electric motor through the outflow path.
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公开(公告)号：US11949317B2
公开(公告)日：2024-04-02
申请号：US17272450
申请日：2018-09-07
发明人： Yoshifumi Ajioka , Tetsuya Sakurada , Seiji Haga , Kazuki Iwasa
CPC分类号： H02K5/207 , H02K9/06 , H02K2205/09
摘要： A frame included in an electric motor has an inflow hole that allows outside air to flow in an interior of the electric motor and an outflow hole that allows the outside air having flowed in to flow out of the electric motor. The electric motor includes a first partition member forming a first ventilation path between the first partition member and the frame, and a second partition member forming a second ventilation path between the second partition member and the frame. In addition, the stator has a third ventilation path penetrating through the stator from one end to another end of the stator in a direction of a rotational axis and configured to communicate with the first ventilation path and the second ventilation path.
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