公开(公告)号：US20230313886A1

公开(公告)日：2023-10-05

申请号：US18174650

申请日：2023-02-27

Applicant: NIDEC CORPORATION

Inventor： Hideaki MATSUO ,  Mitsuhiro HARA ,  Keisuke ASO ,  Naohiro WADA ,  Yusuke MAKINO

IPC: F16H63/34

CPC classification number: F16H63/3466 ,  F16H63/3425

Abstract: A drive apparatus includes a housing including a motor, a power transmission unit, a parking mechanism, and a gear accommodation portion. The parking mechanism includes a parking gear, a pawl, a transmission unit, and a sleeve. The transmission unit includes a cam rod and a cam attached to the cam rod to operate the pawl. The cam is guided by the sleeve. The gear accommodation portion has first and second housing members, a breather, and a dividing wall partitioning a space where the breather opens inside the gear accommodation portion. The second housing member is provided with a holding recess that opens to a first side in an axial direction and holds the sleeve. The first housing member is provided with a retaining wall that covers a surface facing a second side in the axial direction of the sleeve. The retaining wall is a part of the dividing wall.

公开(公告)号：US20220299042A1

公开(公告)日：2022-09-22

申请号：US17634256

申请日：2020-08-19

Applicant: Nidec Corporation

Inventor： Daisuke OGASAWARA ,  Yusuke MAKINO

IPC: F04D29/40 ,  F04D25/06 ,  F04D29/58

Abstract: A ducted fan that includes a housing with a cylindrical or substantially cylindrical shape, a ring motor in the housing, and fan blades extending radially inward from an inner circumferential surface of the ring motor. The housing includes a first housing that covers a first side in an axial direction of the ring motor and a second housing that covers a second side in the axial direction of the ring motor. The second housing includes through holes penetrating the second housing at a portion on the second side in the axial direction with respect to the ring motor. The housing includes an outer circumferential wall including first and second wall portions located in outer circumferential portions of the first and second housings. The outer circumferential wall includes opening portions defined by a gap between the first and second wall portions.

公开(公告)号：US20190181727A1

公开(公告)日：2019-06-13

申请号：US16321513

申请日：2017-08-04

Applicant: Nidec Corporation

Inventor： Yusuke MAKINO

IPC: H02K11/215 ,  H02K11/33 ,  H02K29/08

Abstract: A motor includes a shaft, a bearing, an armature disposed radially outward of the bearing, a bracket, a rotor, and a circuit board on which a Hall element is mounted. The rotor includes a rotor magnet radially opposed to the armature radially outward of the armature. The bracket includes a cylindrical portion including an outer peripheral surface to which the armature is fixed, a bracket bottom portion extending radially outward from a lower end portion of the cylindrical portion, a bracket side wall portion extending upward from an outer peripheral portion of the bracket bottom portion, and a board holding portion connected to the bracket side wall portion. The circuit board is held by the board holding portion. The Hall element is held by the bracket side wall portion.

公开(公告)号：US20190173366A1

公开(公告)日：2019-06-06

申请号：US16321516

申请日：2017-08-04

Applicant: Nidec Corporation

Inventor： Tomoya UEDA ,  Yusuke MAKINO

IPC: H02K21/22 ,  H02K1/16 ,  H02K1/14

Abstract: A stator core includes an annular core back and teeth extending radially from the core back to a rotor magnet includinq magnets. A ratio of a number of slots, which is equal to a number of the teeth, to a number of poles, which is equal to a number of magnets of the rotor magnet, is 3:4. A slot open ratio, which is a ratio of a slot open angle between two adjacent teeth in a peripheral direction to an angle between center lines of the two teeth is 0.5 or more. When a ratio of a peripheral angle of one magnet to an angle between center positions of two adjacent magnets in the peripheral direction is a magnet ratio, a ratio of the slot open ratio to the magnet ratio is 0.6 to 0.7.

公开(公告)号：US20190165642A1

公开(公告)日：2019-05-30

申请号：US16321512

申请日：2017-08-04

Applicant: Nidec Corporation

Inventor： Satoshi KAJIKAWA ,  Yusuke MAKINO

IPC: H02K5/22 ,  H02K3/50 ,  H02K5/173 ,  H02K9/06

Abstract: A motor includes a shaft, a bearing supporting the shaft, an armature disposed radially outward of the bearing, a bracket to which the bearing and the armature are fixed, a covered cylindrical rotor connected to the shaft, and a bus bar unit. The armature includes a core back, teeth extending radially outward from the core back portion, an insulator covering surfaces of the teeth, and a coils defined by a wire wound from above the insulator round the teeth. The bus bar unit includes bus bars to which the coils are connected, a bus bar holder holding the bus bars, and a bus bar cover covering portion of the bus bars.

公开(公告)号：US20190052150A1

公开(公告)日：2019-02-14

申请号：US16053846

申请日：2018-08-03

Applicant: Nidec Corporation

Inventor： Yusuke MAKINO ,  Satoshi KAJIKAWA

IPC: H02K9/06 ,  H02K5/16 ,  H02K7/08 ,  H02K5/22

Abstract: A motor includes a shaft with a central axis along an up and down direction as a center, a bearing mechanism rotatably supporting the shaft; a cylindrical rotor main body fixed to the shaft; a rotor fan fixed to the shaft at an upper side of the rotor main body; an armature facing the rotor main body in a radial direction; and a housing accommodating the rotor main body, the rotor fan, and the armature therein. The bearing mechanism includes a first bearing above the rotor fan in the housing and facing the rotor fan in the up and down direction and a second bearing positioned below the rotor main body. The housing includes a first opening, a second opening, and a bearing holding portion.

公开(公告)号：US20180123433A1

公开(公告)日：2018-05-03

申请号：US15593840

申请日：2017-05-12

Applicant: NIDEC CORPORATION

Inventor： Yoshinobu NAKAMURA ,  Yoshiki KAWAI ,  Yusuke MAKINO ,  Yosuke YAMADA

IPC: H02K15/02 ,  H02K3/52 ,  H02K15/12

CPC classification number: H02K15/026 ,  H02K3/28 ,  H02K3/38 ,  H02K3/46 ,  H02K3/50 ,  H02K3/52 ,  H02K3/521 ,  H02K3/522 ,  H02K15/12 ,  H02K2203/06 ,  H02K2203/09 ,  H02K2203/12 ,  Y10T29/49009

Abstract: A motor may include a stator having coil groups of plural phases and a connector, the stator comprising a plurality of split stators. Each of the split stators may include a split core having an arc-shaped core back section and a tooth section, an insulator, a coil which has a lead-out line that is connected to the connector. The insulator may have a first void extending between a first inner wall and a first outer wall. The first inner wall may have a lead-in groove. The stator may have a support ring disposed on the upper side of the first void. The support ring may have a second void extending between a second inner wall and a second outer wall. A plurality of lead-out lines of different phases may respectively accommodated in the first void and the second void.