To provide an electric actuator which is easy to assemble.SOLUTION: An electric actuator includes: a motor having an output shaft; a planetary gear mechanism which changes a speed of rotational power output from the output shaft; a ball screw mechanism to which the rotational power with the speed changed by the planetary gear mechanism is transmitted; and a housing that accommodates at least the planetary gear mechanism. The planetary gear mechanism includes: a sun gear connected to the output shaft; a ring gear attached to the housing and arranged concentrically on a radially outer side of the sun gear; a plurality of planetary gears arranged between the sun gear and the ring gear in a radial direction and that engage with the sun gear and the ring gear; a plurality of support shafts connected to each of the planetary gears on one axial end side; a carrier to which the other axial end side of the plurality of support shafts is connected; and a rolling bearing having an outer ring formed integrally with the ring gear and attached to the housing, and supporting the carrier in a rotational manner.SELECTED DRAWING: Figure 1

    【課題】組立の容易化を図った電動アクチュエータを提供する。【解決手段】電動アクチュエータは、出力軸を有するモータと、出力軸から出力された回転動力を変速する遊星歯車機構と、遊星歯車機構により変速された回転動力が伝達されるボールねじ機構と、少なくとも遊星歯車機構を収容するハウジングとを有し、遊星歯車機構は、出力軸に連結されるサンギヤと、ハウジングに取り付けられ、サンギヤの径方向外側に同心状に配置されるリングギヤと、サンギヤ及びリングギヤの径方向の間に配置され、サンギヤ及びリングギヤに噛み合う複数の遊星ギヤと、各遊星ギヤに軸方向の一端側が連結される複数の支持軸と、複数の支持軸の軸方向の他端側が連結されるキャリアと、リングギヤと一体に形成されてハウジングに取り付けられた外輪を含み、キャリアを回転自在に支持する転がり軸受と、を備える。【選択図】図1


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    Titel :

    ELECTRIC ACTUATOR


    Weitere Titelangaben:

    電動アクチュエータ


    Beteiligte:
    NAKAOKA KENICHI (Autor:in) / IWAWAKI TAKESHI (Autor:in) / HIRAOKA TAIJI (Autor:in)

    Erscheinungsdatum :

    19.12.2024


    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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