公开(公告)号：US20190238032A1

公开(公告)日：2019-08-01

申请号：US16239565

申请日：2019-01-04

申请人： Nidec Corporation

发明人： Kenta MIYOSHI ,  Satoshi UEDA

IPC分类号： H02K11/33 ,  H02K5/22

CPC分类号： H02K11/33 ,  H02K5/225 ,  H02K2203/03

摘要： A motor includes a rotor, a stator, a circuit board, and a motor case. The rotor rotates around a central axis extending vertically. The stator is opposed to the rotor in a radial direction. The circuit board extends in a direction perpendicular to the central axis. In the motor case, the rotor, the stator, and the circuit board are enclosed. The circuit board includes a connector socket and a connector plug. The connector socket is fixed to the circuit board. The connector plug is fixed to a tip end of a lead wire extending outwardly of the motor case, and is connected to the connector socket downward from above the connector socket. A ceiling section of the motor case includes a projection extending downward. A lower end of the projection is opposed in an axial direction to at least a portion of an upper surface of the connector plug.

公开(公告)号：US20240170018A1

公开(公告)日：2024-05-23

申请号：US18509213

申请日：2023-11-14

申请人： NIDEC CORPORATION

发明人： Takashi MITSUNARI ,  Michihiro ITO ,  Kenta MIYOSHI

IPC分类号： G11B19/20 ,  G11B25/04 ,  G11B33/02 ,  G11B33/14

CPC分类号： G11B19/2009 ,  G11B25/043 ,  G11B33/027 ,  G11B33/1466

摘要： A base plate includes a support part, a bottom plate part, and a wall part. The wall part includes a first wall part and a second wall part above the first wall part. The first wall part includes a first wall surface and a support surface spreading from an upper end of the first wall surface to a radially outer side. The second wall part includes a second wall surface and a recess recessed to the radially outer side from the second wall surface. The recess is defined by a space enclosed by a recess wall surface located on the radially outer side of the second wall surface and extending upward from the support surface, a recess top surface connecting from an upper end of the recess wall surface to the second wall surface, and a recess support surface facing the recess top surface in an axial direction.

公开(公告)号：US20190267858A1

公开(公告)日：2019-08-29

申请号：US16278873

申请日：2019-02-19

申请人： Nidec Corporation

发明人： Kazuhiko SHIOZAWA ,  Itaru NABESHI ,  Kenta MORIYASU ,  Yusuke WATANABE ,  Hitoshi TAKAKI ,  Tatsuya TATARA ,  Kenta MIYOSHI

IPC分类号： H02K1/27 ,  H02K1/28

摘要： A rotor assembly includes a shaft disposed along a central axis extending vertically, a tubular magnet disposed on a radially outer surface of the shaft, a lower spacer disposed axially below the magnet and fixed to the radially outer surface of the shaft, and a tubular magnet holder fixed to a radially outer surface of the magnet via an adhesive. At least a portion of an axially lower surface of the magnet holder is in contact with an axially upper surface of the lower spacer.

公开(公告)号：US20240203450A1

公开(公告)日：2024-06-20

申请号：US18533107

申请日：2023-12-07

申请人： NIDEC CORPORATION

发明人： Michihiro ITO ,  Kenta MIYOSHI ,  Takashi MITSUNARI ,  Masayuki MAEDA ,  Naoyuki KIMURA

IPC分类号： G11B5/48 ,  G11B33/02 ,  G11B33/04

CPC分类号： G11B5/4826 ,  G11B33/027 ,  G11B33/0422

摘要： A disk driving device includes a disk, a motor, an arm, a head, and a housing. The disk rotates about a rotation shaft extending in a vertical direction. The motor causing the disk to rotate. The arm swings about a swinging shaft which is disposed at a position different from the rotation shaft and which extends in the vertical direction. The head is disposed at a tip of the arm and is configured to perform reading or writing of information from or to the disk. The housing accommodates the disk, the motor, the arm, and the head. The housing includes a base plate, a cover, a pivot post, a tubular portion, and a screw. The base plate is a cast product and has a box shape including a bottom wall extending perpendicularly to the rotation shaft and an open top. The cover has a plate shape covering an opening of the base plate. The pivot post is a member separate from the base plate and protrudes upward from a top surface of the bottom wall along the swinging shaft. The tubular portion has a tube shape accommodating the pivot post, and the arm is attached thereto via a bearing disposed on an outer circumference thereof. The screw is inserted into a through-hole provided in the cover and is screwed to a screw hole provided at a top end of the pivot post. The pivot post includes an annular portion in a ring shape protruding in a radial direction from an outer circumferential surface thereof. A top end of the tubular portion is located above the top end of the pivot post and is in contact with a bottom surface of the cover. A bottom end of the tubular portion is disposed on the annular portion.

公开(公告)号：US20190249751A1

公开(公告)日：2019-08-15

申请号：US16263132

申请日：2019-01-31

申请人： Nidec Corporation

发明人： Kenta MIYOSHI ,  Satoshi UEDA

IPC分类号： F16H1/08 ,  A47L11/40 ,  F16H57/023

CPC分类号： F16H1/08 ,  A47L11/4063 ,  F16B43/00 ,  F16H57/023

摘要： A speed reducer includes a helical gear body including helical gears, a rotating shaft, a shaft holder, and a first washer disposed around the rotating shaft between the helical gear body and the shaft holder. The helical gears are disposed coaxially, are capable of rotating around the center axis, and have the same torsion angle. The shaft holder is opposed to an axial-direction end portion of the helical gear body in an axial direction via the first washer. At least one of a radially inner end portion and a radially outer end portion of the first washer includes a washer contact surface. One of the axial-direction end portion of the helical gear body and the shaft holder includes an opposed surface opposed to the washer contact surface at least in a circumferential direction.