公开(公告)号：US20170047818A1

公开(公告)日：2017-02-16

申请号：US15304653

申请日：2015-04-22

Applicant: NSK Ltd.

Inventor： Kazunori KOIZUMI ,  Kenichi FUKUYAMA ,  Hayao WATANABE

IPC: H02K7/14 ,  H02K24/00 ,  H02K5/16 ,  H02K7/08 ,  H02K11/21

CPC classification number: H02K7/14 ,  F16C19/06 ,  F16C25/083 ,  F16C35/067 ,  F16C2380/26 ,  H02K1/2786 ,  H02K5/16 ,  H02K5/1735 ,  H02K7/08 ,  H02K7/085 ,  H02K11/21 ,  H02K11/215 ,  H02K24/00 ,  H02K29/06

Abstract: A direct drive motor includes: a motor unit including a stator and a rotor rotatable with respect to the stator; a housing including a first housing to which the stator is fixed and a second housing to which the rotor is fixed; a bearing that rotatably supports the second housing with respect to the first housing; and a rotation detector that detects a rotating state of the motor unit. The rotation detector is a single incremental-type resolver that detects a relative displacement of the rotor with respect to the stator.

Abstract translation: 直接驱动马达包括：马达单元，其包括定子和可相对于定子旋转的转子; 壳体，其包括固定有定子的第一壳体和固定有转子的第二壳体; 相对于第一壳体可转动地支撑第二壳体的轴承; 以及检测电动机单元的旋转状态的旋转检测器。 旋转检测器是检测转子相对于定子的相对位移的单个增量式分解器。

公开(公告)号：US20230037848A1

公开(公告)日：2023-02-09

申请号：US17786957

申请日：2021-01-26

Applicant: NSK LTD.

Inventor： Toshifumi TAGUCHI ,  Hayao WATANABE ,  Masayuki MARUYAMA ,  Kenichi FUKUYAMA

IPC: H02K24/00 ,  H02K1/02 ,  H02K5/173 ,  H02K7/08 ,  H02K11/225 ,  H02K11/33 ,  H02K21/16 ,  G05B15/02

Abstract: A motor includes a housing including a housing base and a housing shaft portion that is provided on the housing base and extends in a direction along a rotation center axis, a motor stator that is disposed outward in a radial direction of the housing shaft portion, a motor rotor that is provided between the motor stator and the housing shaft portion, a bearing that is provided inward in a radial direction of the motor rotor and rotatably supports the motor rotor to the housing shaft portion, a sealing structure that is provided on an opposite side to the housing base in an axial direction of the motor rotor and seals between the motor rotor and the housing shaft portion, and a resolver that is configured to detect rotation of the motor rotor.

公开(公告)号：US20200161925A1

公开(公告)日：2020-05-21

申请号：US16622015

申请日：2018-06-28

Applicant: NSK LTD.

Inventor： Masayuki MARUYAMA ,  Kenichi FUKUYAMA ,  Hideya HIGUCHI ,  Kazunori KOIZUMI

IPC: H02K3/52

Abstract: An electric motor (1) includes a wiring member (20a, 20b), an annular inner housing (10) disposed on an inner circumferential side of a stator (11), and a wiring fixing member (2) formed around the wiring member (20a, 20b). A longitudinal hole (recessed part) (10a, 10d) which opens to one end surface and extends in an axial direction is formed in an outer circumferential edge portion of the inner housing (10), and a level difference (locking part) (12) is formed on an inner circumferential surface of the longitudinal hole. When the wiring member (20a, 20b) is inserted through the longitudinal hole (10a, 10d), the wiring fixing member (2) is locked to the level difference.