To provide an electric linear motion actuator and an electric brake device in which a planetary roller stably auto-rotates and revolves.SOLUTION: A linear motion conversion mechanism is a planetary roller screw mechanism which includes: a rotary member including a sun roller to which rotation of an electric motor is input, a plurality of planetary rollers which is brought into rolling contact with an outer periphery of the sun roller, and a carrier for holding the plurality of planetary rollers in an auto-rotatable and revolvable manner; a linear motion member including an outer ring arranged so as to surround the plurality of planetary rollers; and circumferential engagement portions respectively formed on an outer peripheral surface of the planetary roller and an inner peripheral surface of the outer ring. By engagement of the circumferential engagement portions, rotation of the planetary roller is converted to linear motion in an axial direction of the outer ring, and an elastic member fixed to the planetary roller is brought into contact with a slope of a groove of the outer ring so that an axial load is applied to the planetary roller in the axial direction through the two circumferential engagement portions.SELECTED DRAWING: Figure 9

    【課題】遊星ローラの自転および公転が安定した電動式直動アクチュエータ及び電動ブレーキ装置を提供する。【解決手段】直動変換機構が、電動モータの回転が入力されるサンローラと、前記サンローラの外周に転がり接触する複数の遊星ローラと、前記複数の遊星ローラを自転可能かつ公転可能に保持するキャリアとを含む回転部材、前記複数の遊星ローラを囲むように配置されたアウタリングを含む直動部材、および、前記遊星ローラの外周面および前記アウタリングの内周面にそれぞれ形成された周方向係合部、を有し、前記周方向係合部同士の係合によって、前記遊星ローラの回転を前記アウタリングの軸方向の直線運動に変換する遊星ローラねじ機構であり、アウタリングの溝の斜面に遊星ローラに固定した弾性部材を接触させて、2つの周方向係合部を介して遊星ローラに軸方向で軸方向荷重を負荷させる。【選択図】図9


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    Title :

    ELECTRIC LINEAR MOTION ACTUATOR AND ELECTRIC BRAKE DEVICE


    Additional title:

    電動式直動アクチュエータおよび電動ブレーキ装置


    Contributors:

    Publication date :

    2024-02-15


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    F16H Getriebe , GEARING / B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF / F16D COUPLINGS FOR TRANSMITTING ROTATION , Nicht schaltbare Kupplungen



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