公开(公告)号：US20210119503A1

公开(公告)日：2021-04-22

申请号：US17137158

申请日：2020-12-29

Applicant: DENSO CORPORATION

Inventor： Katsuya FUJISAKI

IPC: H02K1/27 ,  H02K21/14

Abstract: A three-phase winding is energized so that a phase difference θe1 between each set is 30±60×n [deg] in an electrical angle. A tip portion of the teeth has a skew structure having a plurality of skew forming parts divided in an axial direction so as to be displaced by a predetermined angel θe2 in a circumferential direction in the electrical angle. A relational expression θe1>θe2 is satisfied. When a radial distance between the teeth and a circumscribed circle of a rotor core is set to a, and a radial distance between an outermost part of a permanent magnet located on the outermost side in a radial direction in a permanent magnet and the circumscribed circle is set to b, a relational expression a/b

公开(公告)号：US20190036389A1

公开(公告)日：2019-01-31

申请号：US16047479

申请日：2018-07-27

Applicant: DENSO CORPORATION

Inventor： Koji ISOGAI ,  Katsuya FUJISAKI

IPC: H02K1/16 ,  H02K1/27 ,  H02K3/48 ,  H02K3/12

Abstract: A rotating electric machine includes a stator core, multi-phase stator coils and a rotor. The stator core has teeth and slots. Each of the multi-phase stator coils is comprised of phase windings received in the slots of the stator core. The rotor radially faces the teeth of the stator core. Between the multi-phase stator coils, there is provided, at a maximum, a phase difference of θ1 in electrical angle. Each of the teeth of the stator core has a radially-extending portion and a distal end portion. The distal end portion has skew-forming portions arranged in an axial direction of the stator core. Each of the skew-forming portions has a distal end surface facing the rotor. Circumferential center positions of the distal end surfaces of the skew-forming portions are circumferentially offset from one another by, at a maximum, θ2 in electrical angle. Moreover, the relationship of θ2

公开(公告)号：US20190074734A1

公开(公告)日：2019-03-07

申请号：US16113368

申请日：2018-08-27

Applicant: DENSO CORPORATION

Inventor： Asuka TANAKA ,  Katsuya FUJISAKI

IPC: H02K1/14 ,  H02K1/27

CPC classification number: H02K1/146 ,  B62D5/0403 ,  B62D5/0412 ,  B62D5/0463 ,  H02K1/16 ,  H02K1/276 ,  H02K5/225 ,  H02K11/33 ,  H02K29/03 ,  H02K2213/03

Abstract: A stator core is a stack body of plural plates. Each plate includes an annular back yoke part, plural top-connected tooth parts, plural top-separated tooth parts, plural magnetic path parts and plural top open parts. The top-connected tooth part and the top-separated tooth part protrude from the back yoke part in a radial direction. The top magnetic path part connects top ends of two top-connected tooth parts. The top open part is open to a rotor side at both sides of the top end of the top-separated tooth part. The stator core includes a back yoke, plural teeth, plural partially-connected parts and plural open parts. Each partially-connected part is formed of plural top magnetic path parts and top open parts, which extend in an axial direction. Each open part is formed of only the plural top open parts, which extend continuously in the axial direction.

公开(公告)号：US20240092418A1

公开(公告)日：2024-03-21

申请号：US18525692

申请日：2023-11-30

Applicant: DENSO CORPORATION

Inventor： Motoaki KATAOKA ,  Katsuya FUJISAKI ,  Yusuke OTOGAWA

IPC: B62D5/04

CPC classification number: B62D5/0463

Abstract: A servo controller calculates a base assist command so that a steering torque follows a target steering torque. An estimated load torque calculation section calculates an estimated load torque based on a target steering torque and a base assist command. A target steering torque calculation section calculates a target steering torque using a map that defines a relationship between the estimated load torque and the target steering torque. The servo controller has a low-pass filter for removing high-frequency components of a predetermined frequency or higher in the input target steering torque at least in a differential control calculation, and calculates a differential control amount according to a steering torque deviation between the target steering torque after the low-pass filter and the steering torque.

公开(公告)号：US20170104383A1

公开(公告)日：2017-04-13

申请号：US15281536

申请日：2016-09-30

Applicant: DENSO CORPORATION ,  ASMO CO., LTD.

Inventor： Katsuya FUJISAKI ,  Koji ISOGAI ,  Hiroki TOMIZAWA ,  Makoto TANIGUCHI ,  Masahiro GOTO

IPC: H02K5/124 ,  H02K7/08 ,  H02K5/16 ,  B62D5/04

CPC classification number: H02K5/124 ,  B62D5/0403 ,  B62D5/0424 ,  B62D5/0448 ,  F16C25/083 ,  F16H1/00 ,  H02K5/16 ,  H02K5/1732 ,  H02K7/083 ,  H02K7/116

Abstract: A drive device includes a shaft rotatably supported by a first bearing and a second bearing. The first bearing is disposed in a shaft hole of an output frame end. The second bearing is disposed in a bearing box of an opposite-to-output frame end. An oil seal is fixed in the shaft hole and is closer to an output end than the first bearing is, and is in sliding contact with an outer circumference of the shaft. A biasing member is housed in the bearing box and biases an outer race of the second bearing toward the output end. Accordingly, a deflection amount and a bend amount of the shaft at the location where the oil seal is disposed may be reduced.