公开(公告)号：US20250038584A1

公开(公告)日：2025-01-30

申请号：US18691218

申请日：2022-09-22

Applicant: AICHI STEEL CORPORATION

Inventor： Norihiko HAMADA

IPC: H02K1/02 ,  H02K1/27

Abstract: Disclosed is an example of a material that has excellent magnetization properties and low iron loss and is provided with high tensile strength. With a core sheet (2) that is composed of a silicon steel sheet and has a wedge portion (7) protruding at a part of a boundary portion (8) between a modified portion (5) and an unmodified portion (6), high magnetization properties, low iron loss, and high strength are achieved.

公开(公告)号：US20240352562A1

公开(公告)日：2024-10-24

申请号：US18258704

申请日：2021-09-29

Applicant: AICHI STEEL CORPORATION

Inventor： Takayoshi SUGIURA ,  Ryota TAKAO ,  Tomoaki YUTANI ,  Takeyuki SHIMADA ,  Shuhei YOKOI

IPC: C22C38/04 ,  C21D1/06 ,  C22C38/00 ,  C22C38/02 ,  C22C38/06 ,  C22C38/28 ,  C22C38/32

CPC classification number: C22C38/04 ,  C21D1/06 ,  C22C38/001 ,  C22C38/02 ,  C22C38/06 ,  C22C38/28 ,  C22C38/32 ,  C21D2211/005

Abstract: A case hardening steel for warm forging at a forging temperature of 850° C. to 1100° C. The case hardening steel has a chemical composition including: C: 0.15 to 0.23%; Si: 0.60 to 0.95%; Mn: 0.60 to 1.20%; P: 0.035% or less; S: 0.035% or less; Cr: 1.50% or less (excluding 0%); Al: 0.050% or less; Ti: 0.01 to 0.05%; B: 0.0005 to 0.0050%; N: 0.0020 to 0.0200%; Mo: 0.20% or less as an optional element; Nb: 0.01 to 0.05% as an optional element; and Fe, and satisfies Formulae 1 and 2: Formula 1: 90≥−120*C+20.1*Si−5.3*Mn−8.5*Mo+96≥80, Formula 2: 160≥40*Si+39*Mn+10*Cr+30*Mo+84≥145.

公开(公告)号：US20240185711A1

公开(公告)日：2024-06-06

申请号：US18552669

申请日：2022-03-23

Applicant: Aichi Steel Corporation

Inventor： Kazuo URAKAWA ,  Shogo OKAZAKI

IPC: G08G1/042 ,  G08C17/02 ,  G08G1/01 ,  H04Q9/00

CPC classification number: G08G1/042 ,  G08C17/02 ,  G08G1/0116 ,  H04Q9/00 ,  H04Q2209/47

Abstract: In a vehicular system for a vehicle in which a tag reader for acquiring tag information from a wireless tag is disposed on a front side of a magnetic sensor array to acquire tag information of wireless tag affixed to a magnetic marker laid in a traveling road, after the tag reader acquires the tag information from any wireless tag, when any magnetic marker is detected at a predetermined timing, a process of associating the tag information with the magnetic marker is performed, and information transmitted from the wireless tag is thereby acquired with high reliability.

公开(公告)号：US20240151270A1

公开(公告)日：2024-05-09

申请号：US18552774

申请日：2022-03-14

Applicant: AICHI STEEL CORPORATION ,  Shigehara Manufacturing Co., Ltd.

Inventor： Hayato Watanabe ,  Kazuya Ishida ,  Hiroaki Hirano ,  Hidetaka Shigehara ,  Hidekazu Shigehara

IPC: F16C33/66 ,  F16C19/08

CPC classification number: F16C33/6659 ,  F16C19/08

Abstract: A bearing device includes an oil supply body that cooperates with a bearing ring to form an oil retention space to be filled with a lubricating oil. The oil retention space is open at least on a rolling element side. Thus, the lubricating oil is supplied from the oil retention space to a rolling bearing.

公开(公告)号：US20240055941A1

公开(公告)日：2024-02-15

申请号：US18254996

申请日：2021-12-06

Applicant: AICHI STEEL CORPORATION

Inventor： Aki WATARAI ,  Hiroaki HIRANO ,  Masahiro KAYANO ,  Tadashi FUJIMAKI ,  Choongsik KIM ,  Hayato WATANABE ,  Kazunori ITO ,  Kazuya ISHIDA

IPC: H02K7/116 ,  H02K7/00

CPC classification number: H02K7/116 ,  H02K7/006 ,  H02K21/02

Abstract: A geared motor includes a synchronous reluctance motor whose maximum rotational speed is 20000 rpm to 45000 rpm and in which rare earth bonded magnets are embedded in a rotor, and a speed reducer which reduces the rotational speed of the synchronous reluctance motor to a rotational speed in a usage range while increasing torque to a predetermined range. When a radius of the rotor is represented by R (cm) and a length of the rotor in an axial direction is represented by L (cm), the rotor has a size which satisfies conditions of 2 cm≤R≤6 cm and 2 cm≤L≤25 cm.

公开(公告)号：US11862014B2

公开(公告)日：2024-01-02

申请号：US17414354

申请日：2019-12-27

Applicant: AICHI STEEL CORPORATION

Inventor： Michiharu Yamamoto ,  Tomohiko Nagao ,  Hitoshi Aoyama

IPC: G08G1/042 ,  G06Q10/20 ,  G08G1/01

CPC classification number: G08G1/042 ,  G06Q10/20 ,  G08G1/0116 ,  G08G1/0129

Abstract: In a magnetic marker system including a magnetic marker disposed in a travel environment so as to be detectable by a magnetic sensor attached to a vehicle and a server apparatus which acquires detection information of the magnetic marker from each vehicle, the detection information uploaded from a vehicle side to the server apparatus includes marker information, which is identification information of a corresponding magnetic marker, and the server apparatus estimates the state of the magnetic marker based on the detection information from each vehicle.

公开(公告)号：US20230361661A1

公开(公告)日：2023-11-09

申请号：US18245223

申请日：2020-09-30

Applicant: AICHI STEEL CORPORATION

Inventor： Satoru KAN ,  Hiroaki HIRANO ,  Hironar MITARA ,  Takumi ASANO ,  Motonobu FURUYAMA

IPC: H02K15/03

CPC classification number: H02K15/03

Abstract: A field magnet manufacturing method including reheating and softening a bonded magnet after thermal curing; and press-fitting the softened bonded magnet into a case from an opening on one side of the case. The case has a cylindrical portion and a lid portion coupled to another side of the cylindrical portion. The cylindrical portion has a fixing portion for the bonded magnet. At least the fixing portion is formed of a magnetic material. The press-fitting includes feeding the bonded magnet relatively into the cylindrical portion while allowing a relative posture variation between the bonded magnet and the case. This makes it possible to stably feed even the softened bonded magnet into the case, and the inner surface of the bonded magnet has a similar accuracy to that of the inner surface of the case.

公开(公告)号：US20230250598A1

公开(公告)日：2023-08-10

申请号：US18011843

申请日：2021-06-24

Applicant: Aichi Steel Corporation

Inventor： Michiharu YAMAMOTO ,  Tomohiko NAGAO ,  Hitoshi AOYAMA

IPC: E01F9/512 ,  B60W60/00 ,  E01F9/30 ,  E01F9/524 ,  G06K7/10 ,  G06K19/07

CPC classification number: E01F9/512 ,  B60W60/001 ,  E01F9/30 ,  E01F9/524 ,  G06K7/10297 ,  G06K19/0723 ,  B60W2555/00 ,  B60W2420/50 ,  B60W2556/45 ,  B60W2420/42

Abstract: In a marker system (1) which includes a plurality of magnetic markers (10) disposed on a road surface for driving assist control of a vehicle (5) including automatic traveling control and in which a wireless tag is affixed to a partial magnetic marker (10A) of the plurality of magnetic markers (10), a sign (1M) for distinguishing between a partial magnetic marker (10A) with a wireless tag affixed thereto and another magnetic marker (10B) without a wireless tag affixed thereto is provided. Thus, it is possible to associate the detected magnetic marker (10) and the wireless tag as a transmission source of tag waves with each other with high reliability.

公开(公告)号：US11710598B2

公开(公告)日：2023-07-25

申请号：US17595349

申请日：2020-05-29

Applicant: AICHI STEEL CORPORATION

Inventor： Satoru Kan ,  Hiroaki Hirano ,  Hironari Mitarai ,  Takumi Asano ,  Motonobu Furuyama

IPC: H01F41/02 ,  B29C65/66 ,  H01F1/08 ,  H01F1/28 ,  H02K15/03 ,  B29L31/00

CPC classification number: H01F41/0266 ,  B29C65/66 ,  H01F1/083 ,  H01F1/28 ,  H02K15/03 ,  B29L2031/749 ,  Y10T29/49012

Abstract: A field magnet manufacturing method where a bonded magnet's inner surface press-fitted in a yoke has a certain accuracy irrespective of the accuracy of the yoke's outer circumferential surface. A cylindrical bonded magnet from binding magnet particles with a thermosetting resin is fixed in a tubular yoke of magnetic material. The method includes reheating and softening the bonded magnet after thermal curing; and press-fitting in the bonded magnet after the softening step from a tapered portion on one end side of the yoke to press the bonded magnet's outer circumferential surface against the yoke's inner surface. The press-fitting includes feeding the bonded magnet relatively into the yoke while allowing a relative posture variation between the bonded magnet and the yoke so the bonded magnet's inner surface to be remolded into a shape along the inner surface of the yoke exhibits almost the same accuracy as the yoke's inner surface.

公开(公告)号：US20230003530A1

公开(公告)日：2023-01-05

申请号：US17777642

申请日：2020-11-20

Applicant: Aichi Steel Corporation

Inventor： Michiharu YAMAMOTO ,  Hitoshi AOYAMA

IPC: G01C21/28 ,  G08G1/042

Abstract: A position estimation system for a vehicle including a magnetic sensor which measures magnetism acting from a road surface side forming a surface of a traveling road to estimate an own vehicle position includes a map DB which stores a map (1) associated with a road-surface magnetic distribution (M2), which is a distribution of quantities of magnetism at respective points on the road surface, a magnetic distribution generation part which acquires magnetic measurement values from the magnetic sensor and generates a measured magnetic distribution, which is a distribution of magnetic measurement values, and a position estimation part which specifies an area corresponding to the measured magnetic distribution in the road-surface magnetic distribution (M2) associated with the map stored in the map DB and estimates the own vehicle position based on a position of the area corresponding to the measured magnetic distribution on the map.