To enable the fact that a torque detector is affected by a given or greater external magnetic field to be easily and reliably determined.SOLUTION: A torque detector 41 includes a torque detection unit 72 and a mechanical stopper 64. The torque detection unit 72 detects a magnetic change that corresponds to torque tr applied to a rotation unit 24, and outputs a torque signal Vr on the basis of its detected value. The torque signal Vr is a signal between a first signal lower-limit value VL1 that corresponds to the first lower-limit value TL1 of the torque Tr and a first signal upper-limit value VH1 that corresponds to the first upper-limit value TH1 of the torque Tr. The stopper 64 limits the torque Tr applied to the rotation unit 24 to a second lower-limit value TL2 larger than the first lower-limit value TL1 and a second upper-limit value TH2 smaller than first upper-limit value TH1.SELECTED DRAWING: Figure 4

    【課題】トルク検出装置が一定以上の外部磁場の影響を受けていることを、容易に且つ確実に判断できること。【解決手段】トルク検出装置41は、トルク検出部72と機械的なストッパ64とを含んでいる。前記トルク検出部72は、回転部24に加えられるトルクTrに応じた磁気的な変化として検出し、その検出値に基づいてトルク信号Vrを出力する。前記トルク信号Vrは、前記トルクTrの第1下限値TL1に応じた第1の信号下限値VL1と、前記トルクTrの第1上限値TH1に応じた第1の信号上限値VH1と、の間の信号である。前記ストッパ64は、前記回転部24に加えられる前記トルクTrを、前記第1下限値TL1よりも大きい第2下限値TL2と、前記第1上限値TH1よりも小さい第2上限値TH2と、の間に制限する。【選択図】図4


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    Title :

    TORQUE DETECTOR AND ELECTRIC POWER STEERING DEVICE USING THE SAME


    Additional title:

    トルク検出装置及びこれを用いた電動パワーステアリング装置


    Contributors:

    Publication date :

    2019-11-28


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    G01L Messen von Kraft, mechanischer Spannung, Drehmoment, Arbeit, mechanischer Leistung, mechanischem Wirkungsgrad oder des Drucks von Fluiden , MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE / B62D MOTOR VEHICLES , Motorfahrzeuge



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