Daesung Electric Co., Ltd.

Seag-Woo Lee

Min Seok Jeon

Chang-Nam Jeon

Jae Woo Pyo

Chul Nam

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.

Contactless torque sensor for steering system

Present invention of vehicle's steering wheel rotation angle sensing device comprises, rotor rotating connected with steering shaft transmitting manipulation power to vehicle's wheel; main gear rotating connected with said rotor; first rotation gear and second rotation gear rotating with said main gear; first magnetic body and second magnetic body rotated in same rotation ratio with first rotation gear and second rotation gear connected with them individually, formed in hexahedral shape in which upper surface is larger than opposite bottom surface; first sensor and second sensor sensing phase change caused by rotation of said first magnetic body and second magnetic body; PCB substrate comprising said first sensor and second sensor and various terminals and pins; housing. By present invention it is possible to prevent magnetic body from moving freely to vertical direction without using adhesive agent, and to manufacturing angle sensing device without process of attaching the magnetic body to rotation gear, so total cost and time for manufacturing it also can be diminished.

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Gunpo-si, South Korea

Seag-Woo Lee