PROBLEM TO BE SOLVED: To prevent occurrence of trouble such as power force transmission failure generated by corotation of a roller shaft.SOLUTION: An outer ring member 21 is assembled into a housing 20, and a rotating shaft 34 rotated and driven by an electric motor 24 is arranged on an axial center of the outer ring member 21. A planetary roller 49 is assembled between the rotating shaft 34 and the outer ring member 21, the planetary roller 49 is rotated and revolved through contact with the rotating shaft 34, and the outer ring member 21 is moved in an axial direction through engagement between a helical protrusion 57 arranged at an inner periphery of the outer ring member 21 and a circumferential groove 58 formed at an outer periphery of the planetary roller 49. A shaft end part of the roller shaft 47 rotatably supporting the planetary roller 49 is movably supported in a radial direction by discs 41a, 41b of a carrier 40, and it is biased toward a radial inner side by a resilient ring 50 applied to wind in the shaft end of the roller shaft 47. The roller shaft 47 is prevented from being rotated by roller shaft preventive means 54, and the roller shaft 47 is prevented from being co-rotated when the planetary roller 49 being rotated and revolved is rotated.SELECTED DRAWING: Figure 2

    【課題】ローラ軸の連れ回りを起因として発生する動力伝達不良等のトラブルの発生を未然に防止する。【解決手段】ハウジング20内に外輪部材21を組込み、その外輪部材21の軸心上に電動モータ24によって回転駆動される回転軸34を設ける。回転軸34と外輪部材21間に遊星ローラ49を組込み、その遊星ローラ49を回転軸34との接触により自転及び公転させ、外輪部材21の内周に設けられた螺旋突条57と遊星ローラ49の外周に形成された円周溝58の噛合により外輪部材21を軸方向に移動させる。遊星ローラ49を回転自在に支持するローラ軸47の軸端部をキャリア40のディスク41a、41bで径方向に移動自在に支持し、そのローラ軸47の軸端部を巻き込むように掛け渡された弾性リング50で径方向内方に向けて付勢する。ローラ軸回り止め手段54によりローラ軸47を回り止めして、自転しつつ公転する遊星ローラ49の回転時にローラ軸47が連れ回りするのを防止する。【選択図】図2


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    Titel :

    ELECTRICALLY-DRIVEN LINEAR MOTION ACTUATOR AND ELECTRICALLY-DRIVEN BRAKE DEVICE


    Weitere Titelangaben:

    電動式直動アクチュエータおよび電動式ブレーキ装置


    Beteiligte:

    Erscheinungsdatum :

    2016-12-22


    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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