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Europäisches Patentamt

ROTATIONAL INPUT DEVICE | DREHEINGABEVORRICHTUNG | DISPOSITIF D'ENTRÉE ROTATIF

Patentnummer:EP3318951B1
IPC Hauptklasse:G01D000514
Anmelder:
Erfinder:
Anmeldung:15.09.17
Offenlegung:21.09.16
Patenterteilung:06.11.19

Abstract / Hauptanspruch
A rotational input device (100) includes an insulating substrate (30), a sensor element (20) disposed on the insulating substrate, and a magnetic substance (10) spaced close to the sensor element. The sensor element includes a detection mechanism (21) configured to detect orientations of magnetic field lines (H1) around the sensor element and has a sensor element parallel surface (20c) facing the magnetic substance. The magnetic substance has a bottom surface (10a) that is located adjacent to the sensor element so as to face the sensor element parallel surface, and includes two ridges (11) that protrude from the bottom surface toward the sensor element and extend parallel to each other. The two ridges each have a ridge parallel surface located adjacent to the sensor element such that the ridge parallel surface is substantially parallel to the sensor element parallel surface. The ridge parallel surface has a substantially rectangular shape in plan view. The magnetic substance is magnetized in a magnetization direction (Ml) identical to a longitudinal direction of the ridges.



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