The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 12, 2013
Filed:
Jun. 16, 2009
Chang-nam Jeon, Suwon-si, KR;
Seag-woo Lee, Gunpo-si, KR;
Chang-Nam Jeon, Suwon-si, KR;
Seag-Woo Lee, Gunpo-si, KR;
Daesung Electric Co., Ltd., , KR;
Abstract
The present invention relates to a contactless torque sensor for steering system which is installed between an input shaft connected to a steering wheel and an output shaft connected to vehicle wheels and detects torsion generated by rotational manipulation of the steering wheel. The torque sensor comprises a magnetism generation unit coupled with the input shaft wherein north and south pole magnets are arranged along an outer circumference, a cylindrical magnetic shielding unit connected to the output shaft and comprising holes placed near the magnets, a magnetic detection unit distanced from the outer circumference of the magnetic shielding unit and detecting magnetism passing through the holes, and a magnetic detection sensor placed on an outer circumference of the magnetic detection unit and detecting torsion of the magnetism generation unit and magnetic shielding unit. The present invention allows detecting torque of the output shaft with magnetism induced only once.