US 12,455,202 B2
Torque sensor
Taishi Shigeta, Gunma (JP); and Tomofumi Shigeyama, Gunma (JP)
Assigned to NSK LTD., Tokyo (JP)
Appl. No. 18/000,340
Filed by NSK LTD., Tokyo (JP)
PCT Filed Jul. 16, 2021, PCT No. PCT/JP2021/026742
§ 371(c)(1), (2) Date Nov. 30, 2022,
PCT Pub. No. WO2022/085257, PCT Pub. Date Apr. 28, 2022.
Claims priority of application No. 2020-177313 (JP), filed on Oct. 22, 2020.
Prior Publication US 2023/0221199 A1, Jul. 13, 2023
Int. Cl. G01L 3/10 (2006.01); G01L 5/22 (2006.01)
CPC G01L 3/104 (2013.01) [G01L 5/221 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A torque sensor comprising:
an annular sleeve mounted on a first rotating member;
an intermediate member having an annular shape and placed on an outer circumferential face of the sleeve;
an annular magnet placed on an outer circumferential face of the intermediate member; and
a yoke mounted on a second rotating member rotating with respect to the first rotating member, the yoke facing the magnet in a radial direction that is a direction orthogonal to a central axis of the sleeve,
the sleeve including:
a cylindrical rotating member connecting part being in contact with the first rotating member; and
an intermediate member connecting part having a cylindrical shape at a position shifted with respect to the rotating member connecting part in an axial direction parallel to the central axis, and
an outer diameter of a sleeve end that is an end of the intermediate member connecting part opposite from the rotating member connecting part being smaller than a minimum inner diameter of the magnet, wherein
an end surface of an end of the sleeve in the axial direction, the end surface being disposed at a side opposite to a side of the cylindrical rotating member connecting part, is disposed further in the opposite side than an end surface of an end of the intermediate member and the magnet in the axial direction, the end surface being disposed at the side opposite to the side of the cylindrical rotating member connecting part.