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Inductive rotation angle sensor and motor-driven airflow control device using the same | Induktiver Drehwinkelsensor und motorbetriebene Luftstromsteuerungsvorrichtung damit | Capteur d'angle de rotation inductif et dispositif à commande de débit d'air commandé par un moteur l'utilisant

Patentnummer:EP1914520B1
IPC Hauptklasse:G01D000520
Anmelder:
Erfinder:
Anmeldung:11.10.07
Offenlegung:11.10.06
Patenterteilung:06.03.19

Abstract / Hauptanspruch
A motor-driven airflow control device is provided wherein an inductance-based non-contact rotation angle sensor is compactly formed at an end of a throttle shaft 3. An exciting conductor 1D is attached at an end of a rotating shaft 1A to which a throttle valve 2 is attached, a window hole 2B is provided on a gear cover 25;29, a stationary substrate 3;27 with energizing 3A and signal-generating conductors 3B formed thereon is attached to the gear cover 25;29 so as to face the exciting conductor 1D on the rotating shaft side through the window hole 2B, and the window hole 2B of the gear cover 25;29 is covered by a thin shield member. The energizing 3A and signal-generating conductors 3B can be shielded from a space where the exciting conductor 1D of the rotary member is arranged, making it possible to obtain a highly reliable motor-driven airflow control device including an inductance-based non-contact rotation angle sensor which is not affected by environments on the rotary member side.

EP1914520B1


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