To provide an electric actuator capable of detecting an abnormality and notifying a user of the abnormality before an actuator becomes incapable of actuation, and a parking brake using the same.SOLUTION: An electric actuator 1 comprises a drive motor 10, a ball screw 22, and a controller 80. The ball screw 22 comprises a ball screw shaft 24 that makes linear motion. The ball screw shaft 24 receives driving force of the drive motor 10 which has been converted into linear driving force, and moves in the axial direction so as to operate a brake cable of a parking brake. In a case where a target current value IT is applied to the drive motor 10, the controller 80 outputs a warning when a speed v of the ball screw shaft 24 is lower than a threshold va.SELECTED DRAWING: Figure 6

    【課題】アクチュエータが作動不能となる前に異常を検知して利用者に通知可能な電動アクチュエータ、及びそれを用いたパーキングブレーキを提供する。【解決手段】電動アクチュエータ1は、駆動モータ10と、ボールねじ22と、コントローラ80とを備える。ボールねじ22は、直線運動を行なうボールねじ軸24を含む。ボールねじ軸24は、直線駆動力に変換された駆動モータ10の駆動力を受け、軸方向に移動することによってパーキングブレーキのブレーキケーブルを操作するように構成される。コントローラ80は、駆動モータ10に目標電流値ITが与えられている場合に、ボールねじ軸24の速度vがしきい値vaよりも低いときに警告を出力する。【選択図】図6


    Access

    Download


    Export, share and cite



    Title :

    ELECTRIC ACTUATOR AND PARKING BRAKE


    Additional title:

    電動アクチュエータ及びパーキングブレーキ


    Contributors:

    Publication date :

    2020-01-09


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF / F16H Getriebe , GEARING / H02K Dynamoelektrische Maschinen , DYNAMO-ELECTRIC MACHINES / H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern



    ELECTRIC PARKING BRAKE ACTUATOR

    BARBIERI WALTER | European Patent Office | 2023

    Free access

    Electric Parking Brake Actuator

    JANG WOO KYO / KIM CHANG HWA | European Patent Office | 2019

    Free access

    ELECTRIC PARKING BRAKE ACTUATOR ASSEMBLY

    JANG SU GIL / LEE HO GUN / PARK JANG SOO et al. | European Patent Office | 2021

    Free access

    Actuator for electric parking brake

    JUNG DAEJUNE | European Patent Office | 2021

    Free access

    Actuator for electric parking brake

    European Patent Office | 2024

    Free access