公开(公告)号：US20220255378A1

公开(公告)日：2022-08-11

申请号：US17666506

申请日：2022-02-07

Applicant: NIDEC CORPORATION

Inventor： Tomoya UEDA ,  Toshiyuki SASAKI ,  Yabo HU

IPC: H02K1/276 ,  H02K1/279

Abstract: A rotor includes: a shaft; a tubular rotor core; and a plurality of magnets. The shaft extends along a center axis. The rotor core surrounds the shaft. The plurality of magnets is disposed outside the rotor core in a radial direction and is aligned in a circumferential direction. A plurality of first recessed portions recessed outward in the radial direction is aligned in the circumferential direction in an inner surface of the rotor core in the radial direction. Each of the first recessed portions overlaps each of the magnets in the radial direction.

公开(公告)号：US20220250714A1

公开(公告)日：2022-08-11

申请号：US17666572

申请日：2022-02-08

Applicant: NIDEC CORPORATION

Inventor： Tadahiro KURAMOTO ,  Toshiyuki SASAKI ,  Takeshi OHIRO

IPC: B62M6/75

Abstract: A drive device includes a motor, an output part outputting torque to the outside, a gear part transmitting torque of the motor to the output part, and a housing having an internal space. The gear part includes at least one gear shaft extending in an axial direction, to which at least one gear is fixed, and a gear case accommodating the gear. The gear case includes a wall part facing an outer circumferential surface of the accommodated gear in a radial direction and extending in a circumferential direction and an opening adjacent to the wall part in the circumferential direction and penetrating in the radial direction. The opening faces the housing in the radial direction, and in a rotation direction of the gear, the wall part includes a front end disposed on a front side of the opening and adjacent to the opening. The front end contacts the housing.

公开(公告)号：US20220255381A1

公开(公告)日：2022-08-11

申请号：US17666522

申请日：2022-02-07

Applicant: NIDEC CORPORATION

Inventor： Tomoya UEDA ,  Toshiyuki SASAKI

IPC: H02K1/30 ,  H02K1/278 ,  H02K1/28 ,  H02K7/116 ,  H02K21/16

Abstract: A rotor includes a shaft, a cylindrical rotor core, a connector, magnets and a cover. The shaft extends along a central axis. The rotor core surrounds the shaft. The connector is provided radially inside the rotor core and connects the rotor core and the shaft. The magnets are provided radially outside the rotor core along a circumferential direction. The cover is provided radially outside the magnets. The connector includes a cylindrical body surrounding the shaft and a flange. The flange extends radially outward from one axial end of the body and faces the magnets in the axial direction. The cover includes a peripheral surface and an eave. The peripheral surface faces the magnets in a radial direction. The eave extends radially inward from an other axial end of the peripheral surface and faces the magnets in the axial direction.

公开(公告)号：US20220250713A1

公开(公告)日：2022-08-11

申请号：US17666569

申请日：2022-02-08

Applicant: NIDEC CORPORATION

Inventor： Tadahiro KURAMOTO ,  Toshiyuki SASAKI ,  Takeshi OHIRO

IPC: B62M6/55 ,  B62M11/06 ,  B62M6/50

Abstract: A drive device includes a motor having a motor shaft, an output part outputting a rotational force to the outside, a gear part transmitting the rotational force of the motor shaft to the output part, and a housing having an internal space in which the motor, a portion of the output part, and the gear part are accommodated. The housing includes a support member of which at least a portion is disposed in the internal space. The gear part includes at least one gear shaft rotatably supported by the housing via two bearing parts disposed away from each other in an axial direction. The at least one gear shaft is rotatably supported by the support member via the bearing part on one side in the axial direction.