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Europäisches Patentamt

MAGNETPOSITIONSDETEKTIONSVORRICHTUNG | DISPOSITIF DE DÉTECTION DE POSITION MAGNÉTIQUE | MAGNETIC POSITION DETECTION DEVICE

Patentnummer:EP3187832B1
IPC Hauptklasse:G01D000514
Anmelder:TDK Corporation (0)
Tokyo, JP
Erfinder:Fukuoka, Seiji (0)
c/o TDK EPC-Corporation; 1-13-1 Nihonbashi, Chuo-ku; Tokyo 103-8272, JP
Suzuki, Keiji (0)
c/o TDK EPC-Corporation; 1-13-1 Nihonbashi, Chuo-ku; Tokyo 103-8272, JP
Anmeldung:28.01.15
Offenlegung:26.08.14
Patenterteilung:14.10.20

Abstract / Hauptanspruch
A magnetic position detection device is provided that is capable of suitable position detection even if there is only one object magnet. A magnetic position detection device includes a bias magnet 1, a magnetic detection element 2, an object magnet 3, and a mobile object 4. Opposite poles of the bias magnet 1 and object magnet 3 face to face each other. The magnetic detection element 2 is disposed in front of the surface of the pole of the bias magnet 1 toward to the object magnet 3. The magnetic detection element 2 is disposed so as to be fixed to the bias magnet 1 and have a fixed positional relationship with the bias magnet 1. The orientation of the magnetic field at the position of the magnetic detection element 2 changes in accordance with the position of the object magnet 3. The magnetic detection element 2 detects the orientation of the magnetic field applied thereto.



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