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：US20200292400A1

公开(公告)日：2020-09-17

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.