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1. (WO2018163579) FORCE SENSOR

Pub. No.:    WO/2018/163579    International Application No.:    PCT/JP2017/047119
Publication Date: Fri Sep 14 01:59:59 CEST 2018 International Filing Date: Thu Dec 28 00:59:59 CET 2017
IPC: G01L 5/16
G01L 1/26
Applicants: NIDEC COPAL ELECTRONICS CORPORATION
日本電産コパル電子株式会社
Inventors: ENDO, Takayuki
遠藤 嵩幸
Title: FORCE SENSOR
Abstract:
Provided is a force sensor which is capable of inhibiting breakage of a strain body, and improving reliability, even if the rigidity of the strain body differs in the axial direction. A force sensor 10 according to an embodiment of the present application has a main body 11 which is cylindrical. A cylindrical movable body 12 is capable of moving with respect to the main body, and has at least three circular openings 13 provided to the circumference. A strain body 16 is fixed to the main body and the movable body, and is capable of deforming in accordance with the movement of the movable body. A strain sensor 16a is provided to the strain body. First stoppers 14 are provided inside each of the openings, and are provided with first outer circumferential surfaces having a first external diameter that is smaller than the diameter of the openings. A cylindrical second stopper 24 is provided a first distance away from a first inner circumferential surface of the main body, and is provided with a second outer circumferential surface having a second external diameter that is smaller than the diameter of the first inner circumferential surface.