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公开(公告)号：US20220247255A1
公开(公告)日：2022-08-04
申请号：US17627299
申请日：2020-07-10
Applicant: HITACHI ASTEMO, LTD.
Inventor： Hayato FUJITA , Yuichiro BABA , Ryoji KOBAYASHI , Toshiki TAKAHASHI , Takuya MIYAGI , Kenji NAKAYAMA
Abstract: An object of the present invention is to provide a sealing member that provides high sealability in a coolant flow path. A rotating electrical machine includes a stator core around which a winding is wound, a stator frame that supports the stator core, a housing that is disposed outside the stator frame and forms a flow path space with the stator frame, and a sealing member that is disposed between the stator frame and the housing. The housing includes a mounting portion on which the sealing member is mounted. The sealing member includes a base portion that is in contact with the housing and the stator frame, and an attachment portion that protrudes from the base portion and is inserted to the mounting portion of the housing.
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公开(公告)号：US20220037940A1
公开(公告)日：2022-02-03
申请号：US17298785
申请日：2019-12-13
Applicant: Hitachi Astemo, Ltd.
Inventor： Takuya MIYAGI , Toshiki TAKAHASHI , Hayato FUJITA , Yuichiro BABA , Kenji NAKAYAMA
Abstract: An object of the present invention is to reduce stress caused by press-fitting of a shaft on an outer edge portion side of a rotor. A rotor for a rotating electric machine includes a shaft and a rotor iron core, the shaft coupled to the rotor iron core. The rotor iron core includes: an outer edge portion housing a magnet; an inner edge portion coupled to the shaft; and a rib portion having a lightening portion that is formed inside between the outer edge portion and the inner edge portion. The rib portion includes: a through-hole forming portion connected to the outer edge portion and having a through-hole inside; and a bridge portion connecting the through-hole forming portion and the inner edge portion. The bridge portion includes: a second bridge portion connected to the through-hole forming portion and protruding outward; and a first bridge portion having one end connected to the inner edge portion and another end connected to the second bridge portion. A bent portion is provided at a position connecting the first bridge portion and the second bridge portion.
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公开(公告)号：US20210384787A1
公开(公告)日：2021-12-09
申请号：US17282459
申请日：2019-09-04
Applicant: Hitachi Astemo, Ltd.
Inventor： Hiromitsu OKAMOTO , Kenichi NAKAYAMA , Kenji NAKAYAMA , Toshiyuki TAKANO , Yoshio OZEKI , Hideaki KOBAYASHI
Abstract: An object of the present invention is to improve the reliability of a rotating electric machine. A stator of a rotating electric machine includes a stator core on which teeth and slots are provided on a cylindrical inner surface, a plurality of windings arranged inside the slot, and slot liners disposed between an inner wall of the slot and the plurality of windings. Each of the plurality of windings has a first surface formed along a radial direction of the stator core and a second surface formed along a circumferential direction, the slot has a first inner wall facing the first surface, and a second inner wall facing the second surface, an adhesive layer expanded by processing is formed on a front surface of the slot liner, when an area of the first surface is larger than an area of the second surface, a distance between the first surface and the first inner wall is smaller than a distance between the second surface and the second inner wall, and when the area of the first surface is smaller than the area of the second surface, the distance between the first surface and the first inner wall is larger than the distance between the second surface and the second inner wall.
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