An actuator according to the present invention includes a cylinder, a piston inserted into the cylinder to be free to slide, a rod that is inserted into the cylinder and connected to the piston, a rod side chamber and a piston side chamber defined by the piston within the cylinder, a tank, a first opening/closing valve provided in a first passage that connects the rod side chamber to the piston side chamber, a second opening/closing valve provided in a second passage that connects the piston side chamber to the tank, a pump that supplies a working fluid to the rod side chamber, a motor that drives the pump, an exhaust passage that connects the rod side chamber to the tank, and a passive valve that is provided in the exhaust passage and has a predetermined pressure/flow rate characteristic.


    Access

    Download


    Export, share and cite



    Title :

    Actuator unit


    Contributors:

    Publication date :

    2017-06-13


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B61F Untergestelle für Schienenfahrzeuge, z.B. Fahrgestellrahmen, Drehgestelle oder Anordnungen der Radsätze , RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES / F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL , Druckmittelbetriebene Systeme allgemein



    ACTUATOR UNIT

    OGAWA TAKAYUKI | European Patent Office | 2020

    Free access

    ACTUATOR UNIT

    OGAWA TAKAYUKI | European Patent Office | 2016

    Free access

    ACTUATOR UNIT

    ITO KOJI | European Patent Office | 2025

    Free access

    Actuator unit

    OGAWA TAKAYUKI | European Patent Office | 2018

    Free access

    ACTUATOR UNIT

    European Patent Office | 2017

    Free access