公开(公告)号：US12066056B2

公开(公告)日：2024-08-20

申请号：US17798830

申请日：2021-02-02

Applicant: NTN Corporation

Inventor： Takashi Koike ,  Yusuke Shibuya ,  Sota Yamaguchi

IPC: F16C32/04 ,  F16C43/04 ,  H02K7/09

CPC classification number: F16C32/0474 ,  F16C43/04 ,  H02K7/09

Abstract: A bearing device includes: a magnetic ring fixed to an inner ring; and a stator fixed to an outer ring so as to face magnetic ring. Magnetic ring and stator constitute a claw pole type generator. Stator includes a coil and a magnetic yoke surrounding coil. The magnetic yoke is configured by combining a first member and a second member that are magnetic bodies. First member and second member have an identical shape. Each of first member and second member has a plurality of second claws arranged in a comb shape. A plurality of first claws of first member and the plurality of second claws of second member are alternately arranged on a surface facing magnetic ring.

公开(公告)号：US11137303B2

公开(公告)日：2021-10-05

申请号：US16649092

申请日：2018-09-20

Applicant: NTN CORPORATION

Inventor： Yusuke Shibuya ,  Takashi Koike ,  Yasuyuki Fukushima

IPC: G01L3/10

Abstract: A torque detection device includes an inner ring, a middle ring, an outer ring, a first beam, a second beam, a magnetic target, and a magnetic sensor. The first beam is composed of an elastic member extending in a radial direction so as to couple the inner ring and the middle ring together. The second beam is composed of an elastic member extending in a radial direction so as to couple the middle ring to the outer ring together. The magnetic target is fixed to the inner ring and the magnetic sensor is fixed to the middle ring such that the magnetic target and the magnetic sensor face each other. Torque acting on the inner ring or the outer ring is calculated according to how an amount of magnetism sensed by the magnetic sensor changes.

公开(公告)号：US11099037B2

公开(公告)日：2021-08-24

申请号：US16521092

申请日：2019-07-24

Applicant: NTN CORPORATION

Inventor： Takashi Koike ,  Yasuyuki Fukushima ,  Yuya Yamaguchi

IPC: G01D5/245 ,  G01D5/14 ,  G01D5/244

Abstract: A magnetic encoder having a plurality of rows of magnetic tracks and capable of detecting an absolute angle is easily producible with higher accuracy. The magnetic encoder includes: a core member of annular shape having a bending plate portion that bends and extends from an edge of a track formation surface; and two or more rows of magnetic tracks arranged adjacent to each other on a magnetic member provided on the track formation surface, each track having N poles and S poles alternately magnetized thereon. The magnetic tracks include a main track that has a largest number of magnetic poles and is used for calculating an angle, and a sub track used for calculating a phase difference from the main track. The main track is located on a side closer to the bending plate portion than the sub track.

公开(公告)号：US11181399B2

公开(公告)日：2021-11-23

申请号：US16521088

申请日：2019-07-24

Applicant: NTN CORPORATION

Inventor： Takashi Koike ,  Yasuyuki Fukushima ,  Yuya Yamaguchi

IPC: G01D5/245

Abstract: The magnetic encoder includes: a core member of annular shape having a press-fitting portion which bends and extends from an edge of a track formation surface, and to which a rotary shaft is press-fitted and fixed; and two or more rows of magnetic tracks arranged adjacent to each other on a magnetic member provided on the track formation surface, each track having N poles and S poles alternately magnetized thereon. The two or more rows of magnetic tracks include a main track that has a largest number of magnetic poles and is used for calculating an angle of rotation, and a sub track used for calculating a phase difference from the main track. The main track is located on a side more distant from the press-fitting portion than the sub track.

公开(公告)号：US20230027711A1

公开(公告)日：2023-01-26

申请号：US17787047

申请日：2020-12-08

Applicant: NTN CORPORATION

Inventor： Takashi Koike ,  Yasuyuki FUKUSHIMA ,  Yusuke SHIBUYA ,  Daichi KONDOU

IPC: F16C41/00 ,  F16C35/12

Abstract: A bearing device includes: at least one bearing that has a rolling element and a raceway surface to support a main shaft; a member disposed on a path through which pressing force generating a preload between the rolling element and the raceway surface is transmitted; and at least one load sensor element fixed to the member to measure the pressing force. At least one load sensor element is a chip component including a thin film pattern of which resistance changes according to the pressing force and a protective layer that insulates and protects thin film pattern.

公开(公告)号：US11293494B2

公开(公告)日：2022-04-05

申请号：US16971291

申请日：2019-02-08

Applicant: NTN CORPORATION

Inventor： Takashi Koike ,  Yasuyuki Fukushima ,  Yusuke Shibuya

IPC: F16C41/00 ,  F16C19/06 ,  F16C19/52 ,  F16C33/78

Abstract: A bearing equipped with a sensor and incorporating a power generation function in a simple configuration is provided. A bearing includes an outer ring, a plurality of rolling elements, an inner ring, a cage, a seal member, a sensor, a transmission unit, and a power generation unit. The sensor is disposed in the seal member, and detects state information of the bearing. The transmission unit transmits the state information detected by the sensor to outside. The power generation unit is disposed so as to face a bearing space sandwiched between the outer ring and the inner ring, and generates electric power that is to be supplied to the sensor and the transmission unit. The power generation unit includes an element that converts stress into electromotive force.

公开(公告)号：US12196257B2

公开(公告)日：2025-01-14

申请号：US17787047

申请日：2020-12-08

Applicant: NTN CORPORATION

Inventor： Takashi Koike ,  Yasuyuki Fukushima ,  Yusuke Shibuya ,  Daichi Kondou

IPC: F16C19/52 ,  F16C19/54 ,  F16C35/12 ,  G01L5/00

Abstract: A bearing device includes: at least one bearing that has a rolling element and a raceway surface to support a main shaft; a member disposed on a path through which pressing force generating a preload between the rolling element and the raceway surface is transmitted; and at least one load sensor element fixed to the member to measure the pressing force. At least one load sensor element is a chip component including a thin film pattern of which resistance changes according to the pressing force and a protective layer that insulates and protects thin film pattern.

公开(公告)号：US10053137B2

公开(公告)日：2018-08-21

申请号：US15303575

申请日：2015-04-07

Applicant: NTN CORPORATION

Inventor： Hironori Tokunaga ,  Takashi Koike

IPC: B62D5/00 ,  B62D5/04 ,  B62D7/09 ,  B62D7/15 ,  B62D3/02 ,  B62D9/00

CPC classification number: B62D5/008 ,  B62D3/02 ,  B62D5/0421 ,  B62D5/0427 ,  B62D7/09 ,  B62D7/1581 ,  B62D9/002

Abstract: It is an object of the present invention to provide a rear wheel steering device of which the weight is not added to unsprung weight, and which can steer right and left rear wheels independently of each other. The rear wheel steering device includes a first rod connected to the left rear wheel, a first driving portion configured to axially move the first rod, a second rod connected to the right rear wheel, and a second driving portion configured to axially move the second rod. A single housing supports the first rod, the first driving portion, the second rod, and the second driving portion.