To smoothly assemble an electric linear motion actuator.SOLUTION: An electric linear motion actuator 14 comprises a linear motion conversion mechanism 24 which has: a sun roller 25 rotatable around a shaft, and immovable to an axial direction; a plurality of planetary rollers 26 rollingly contacting with an external periphery of the sun roller 25; a carrier 27 for holding the plurality of planetary rollers 26 so as to be rotatable and revolvable; a thrust bearing 28 interposed between the planetary rollers 26 and the carrier 27; an outer ring 29 arranged so as to surround the plurality of planetary rollers 26; and peripheral engagement parts 30, 31 which are formed at external peripheral faces of the planetary rollers 26 and an internal peripheral face of the outer ring 29, and different from each other in lead angles. The electric linear motion actuator 14 also has a position regulation member 36 for holding positions of the planetary rollers 26 and the thrust bearing 28 in a radial direction in a coaxial state.SELECTED DRAWING: Figure 1

    【課題】電動式直動アクチュエータのアセンブリをスムーズに行うこと。【解決手段】軸周りに回転可能かつ軸方向に移動不能とされたサンローラ25と、サンローラ25の外周に転がり接触する複数の遊星ローラ26と、複数の遊星ローラ26を自転可能かつ公転可能に保持するキャリア27と、遊星ローラ26とキャリア27の軸方向間に介在して設けられたスラスト軸受28と、複数の遊星ローラ26を囲むように配置されたアウタリング29と、遊星ローラ26の外周面及びアウタリング29の内周面にそれぞれ形成された、リード角が互いに異なる周方向係合部30、31と、を有する直動変換機構24を備えた電動式直動アクチュエータ14において、遊星ローラ26とスラスト軸受28の径方向位置を同軸状態に保つ位置規制部材36をさらに有することを特徴とする電動式直動アクチュエータ14を構成する。【選択図】図1


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    Titel :

    ELECTRIC LINEAR MOTION ACTUATOR AND ELECTRIC BRAKE DEVICE


    Weitere Titelangaben:

    電動式直動アクチュエータ及び電動ブレーキ装置


    Beteiligte:

    Erscheinungsdatum :

    2020-03-19


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

    IPC:    F16H Getriebe , GEARING / B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF / F16C SHAFTS , Wellen / F16D COUPLINGS FOR TRANSMITTING ROTATION , Nicht schaltbare Kupplungen / H02K Dynamoelektrische Maschinen , DYNAMO-ELECTRIC MACHINES



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