TORQUE SENSOR AND METHOD FOR MANUFACTURING TORQUE SENSOR

WIPO Patent Application WO/2023/181529

A1

To improve yield during manufacturing of a torque sensor, a torque sensor 10 comprises: a detection coil 40 that generates a magnetic field; a yoke 42 that holds the detection coil 40; and a sensor sleeve 32 that is disposed covering an input shaft 82a in a position on the inside of the detection coil 40 and that is attached to an output shaft 82b linked to the input shaft 82a via a torsion bar 82c. A plurality of protrusions 31a, which protrude to the outside in a radial direction, are arranged to be aligned in a circumferential direction of the input shaft 82a, in a section of the input shaft 82a located on the inside of the sensor sleeve 32. The sensor sleeve 32 has a plurality of apertures 33 aligned in a circumferential direction of the sensor sleeve 32. The yoke 42 has a bottom section 42f covering the detection coil 40 from the side in an axial center direction, and a wall section 42c covering the detection coil 40 from the outside in the radial direction. A groove section 42g for which a thickness direction of the yoke 42 is a depth direction is disposed at a boundary between the bottom section 42f and the wall section 42c.

JP2021148556	SHAFT FOR MAGNETOSTRICTIVE TORQUE SENSOR AND METHOD FOR MEASURING THE SAME
JPH09243477	MAGNETOSTRICTIVE TORQUE SENSOR
JP2005043090	TORQUE DETECTOR

NISHIOKA YUSUKE (JP)
SHIGEYAMA TOMOFUMI (JP)
SHIGETA TAISHI (JP)

PCT/JP2022/045995

September 28, 2023

December 14, 2022

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NSK LTD (JP)

G01L3/10

WO2017082334A1

2017-05-18

JPH0576163A	1993-03-26
JP2018165515A	2018-10-25
JP2002156297A	2002-05-31
US20040112146A1	2004-06-17

SAKAI INTERNATIONAL PATENT OFFICE (JP)

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