公开(公告)号：US20220113124A1

公开(公告)日：2022-04-14

申请号：US17559432

申请日：2021-12-22

Applicant: DENSO CORPORATION

Inventor： Hitomi HONDA ,  Yoshiyuki KOUNO

IPC: G01B7/30 ,  G01D5/14 ,  G01D5/16

Abstract: A rotation angle detection device that detects a rotation angle of a valve body. The rotation angle detection device includes a shaft, a gear, a magnetic field generator, and a magnetic detection element. The shaft is connected to the valve body. The magnetic field generator is arranged on a gear side and generates a magnetic field. The magnetic detection element is arranged on an extension of the shaft and detects magnetic flux density of the magnetic field that rotates together with the gear.