Provided is an electric actuator including: an electric motor capable of rotating forward and backward; and a motion conversion mechanism configured to convert rotation of the electric motor into a reciprocating linear motion of a screw shaft, the motion conversion mechanism including: a nut configured to be rotationally driven by the electric motor; and the screw shaft capable of being threadedly inserted through the nut in a back and forth movable manner. A lubricant holding portion having an outer diameter larger than a diameter of a screw hole of the nut and being capable of housing a lubricant is formed on an inner periphery of an end of the nut in an axial direction. A lid member configured to cover an opening end of the lubricant holding portion in an axial direction is provided. Thus, an electric actuator can prevent wear at a threaded engagement portion between a nut and a screw shaft by sufficiently lubricating the threaded engagement portion, thereby being capable of improving the durability of the nut and the screw shaft.


    Access

    Download


    Export, share and cite



    Title :

    ELECTRIC ACTUATOR


    Additional title:

    ELEKTRISCHER STELLANTRIEB
    ACTIONNEUR ÉLECTRIQUE


    Contributors:
    USUI KOJI (author)

    Publication date :

    2024-04-03


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

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



    ELECTRIC ACTUATOR AND ELECTRIC ACTUATOR MANUFACTURING METHOD

    SHIMIZU TATSUNORI | European Patent Office | 2018

    Free access

    ELECTRIC ACTUATOR AND ACTUATOR DEVICE

    SAITO KAZUHIRO / HASHIMOTO SEIJI / UENO AGATO | European Patent Office | 2020

    Free access

    ELECTRIC ACTUATOR

    IKEDA YOSHINORI / HIRANO SHINSUKE | European Patent Office | 2020

    Free access

    Electric actuator

    HIRAI MASANORI / SHIRAI YASUYUKI / NOMURA TSUNEHISA et al. | European Patent Office | 2019

    Free access

    ELECTRIC ACTUATOR

    MAKINO SADAYUKI / MORI KENTA / UMEMURA EISUKE et al. | European Patent Office | 2019

    Free access