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公开(公告)号：US20230299628A1
公开(公告)日：2023-09-21
申请号：US18201471
申请日：2023-05-24
申请人： DENSO CORPORATION
CPC分类号： H02K1/2773 , H02K21/16
摘要： A rotor includes: a rotor core including a plurality of core sheets that are laminated together and having a plurality of magnet-receiving holes formed in a folded shape; and a plurality of permanent magnets embedded respectively in the magnet-receiving holes. Each of the core sheets has a plurality of first through-holes and a plurality of second through-holes. Each of the first through-holes has a connection portion formed at an intermediate position in the folded shape of a corresponding one of the magnet-receiving holes to connect inner peripheral edges of the first through-hole that face each other in a width direction of the first through-hole. Each of the second through-holes has no connection portion. The core sheets are identical in configuration to each other. The core sheets are laminated so that each of the magnet-receiving holes is constituted of a mixture of the first and second through-holes of the core sheets.
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公开(公告)号：US20240097512A1
公开(公告)日：2024-03-21
申请号：US18527495
申请日：2023-12-04
申请人： DENSO CORPORATION
发明人： Masahito SAKAI
IPC分类号： H02K1/276
CPC分类号： H02K1/276
摘要： A rotor includes: a rotor core having a plurality of magnet-receiving holes formed in a folded shape that is convex radially inward; and a plurality of permanent magnets embedded respectively in the magnet-receiving holes of the rotor core. The rotor core includes a plurality of core sheets that are laminated in an axial direction. Each of the core sheets has a plurality of through-holes for magnets. The magnet-receiving holes of the rotor core are constituted of those of the through-holes of the axially-laminated core sheets which overlap each other in the axial direction. Interior surfaces of the magnet-receiving holes have irregular portions each of which is formed by a difference in position between peripheral edges of the axially-overlapping through-holes, and non-irregular portions where none of the irregular portions are formed. The permanent magnets have engaging portions located respectively in recesses of the irregular portions.
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公开(公告)号：US20230081857A1
公开(公告)日：2023-03-16
申请号：US17990975
申请日：2022-11-21
申请人： DENSO CORPORATION
发明人： Masahito SAKAI , Kazuki MARUO
摘要： A speed reducer-equipped motor of the present disclosure includes a housing to which a motor is fixed and that has a speed reducer housing recess, and a helical gear and a locking gear that are accommodated in the speed reducer housing recess. A spring is provided between the helical gear and the locking gear, and reduces wobbling of the helical gear, the locking gear, and the like in the speed reducer housing recess.
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公开(公告)号：US20220099161A1
公开(公告)日：2022-03-31
申请号：US17427230
申请日：2020-09-01
申请人： DENSO CORPORATION
发明人： Kazuki MARUO , Masahito SAKAI , Fumihiro SHIMIZU
摘要： A speed reducer includes a helical gear, an eccentric shaft and a slider plate. The speed reducer also includes a transmission gear and an output gear body. The transmission gear is supported at a first support part, transmission gear spinning is restricted by engagement with the slider plate, and the transmission gear revolves by the helical gear rotating with the eccentric shaft. The output gear body rotates by the transmission gear revolving. The transmission gear includes a pair of restricting protrusions protruding toward the slider plate side. The restricting protrusions have engaging surfaces that touch the slider plate wherein the engaging surfaces oppose the slider plate in a radial direction of the transmission gear. Surfaces at opposite sides of the restricting protrusions from the slider plate are formed, as seen in the axis direction of the transmission gear, to be convex to the opposite sides thereof from the slider plate.
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公开(公告)号：US20210324942A1
公开(公告)日：2021-10-21
申请号：US17258912
申请日：2019-07-08
申请人： DENSO CORPORATION
摘要： A speed reducer including: a first gear; an eccentric shaft joined to the first gear, the eccentric shaft has first and second supporting portions offset in a rotation radial direction with respect to a first gear rotation shaft; a fixed gear at an eccentric shaft radial direction outer side, and whose rotation is restricted; a transmitting gear supported at the first supporting portion and meshes with the fixed gear, and the transmitting gear revolves around the first gear rotation shaft and rotates around its own axis; an outputting portion rotating due to the transmitting gear revolving and rotating around its own axis; and a locking gear supported at the second supporting portion and meshes with the fixed gear, and the locking gear revolves around the first gear rotation shaft and rotates around its own axis, and rotation of the outputting portion is restricted.
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