PROBLEM TO BE SOLVED: To enhance the reliability of a motion of a planetary roller screw type linear motion mechanism which can switch a load conversion rate according to a load in an axial direction which is applied to an object from an outer ring member.SOLUTION: In a planetary roller screw type linear motion mechanism, a friction connecting part 40 in which a carrier 14 is supported by an elastic member 37 so that the carrier 14 relatively moves to a rotating shaft 8 by a reaction force to a rear part in an axial direction which is received by an outer ring member 5, and which friction-contacts with the carrier 14 in a state that the carrier 14 does not relatively move to the rear part in the axial direction with respect to the rotating shaft 8, and releases the friction-connection with the carrier 14 in state that the carrier 14 relatively moves to the rear part in the axial direction with respect to the rotating shaft 8 is arranged at an external periphery of the rotating shaft 8. The friction connecting part 40 is formed into such a shape that the friction connecting part contacts with the carrier 14 at an outside diameter side with respect to a diameter PCD of a circle which passes centers of planetary rollers 13 in common.SELECTED DRAWING: Figure 2

    【課題】外輪部材から対象物に負荷する軸方向荷重に応じて荷重変換率を切り替えることが可能な遊星ローラねじ式直動機構の動作の信頼性を高める。【解決手段】外輪部材5が受ける軸方向後方への反力により、キャリア14が回転軸8に対して相対移動するようにキャリア14が弾性部材37で支持され、キャリア14が回転軸8に対して軸方向後方に相対移動していない状態ではキャリア14と摩擦結合し、キャリア14が回転軸8に対して軸方向後方に相対移動した状態ではキャリア14との摩擦結合を解除する摩擦結合部40が回転軸8の外周に設けられている遊星ローラねじ式直動機構において、摩擦結合部40は遊星ローラ13の各中心を共通して通る円の直径PCDよりも外径側でキャリア14と接触する形状とされている。【選択図】図2


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    Titel :

    PLANETARY ROLLER SCREW TYPE LINEAR MOTION MECHANISM AND ELECTRIC BRAKE DEVICE


    Weitere Titelangaben:

    遊星ローラねじ式直動機構および電動ブレーキ装置


    Beteiligte:

    Erscheinungsdatum :

    2018-01-18


    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 / F16D COUPLINGS FOR TRANSMITTING ROTATION , Nicht schaltbare Kupplungen



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