An electromechanical actuator, EMA, (1) having a plurality of modes, comprising: an electrical motor (200) having a motor shaft (201) extending along an axis (A) of the EMA, the motor driving the shaft to rotate about the axis; a gear assembly (400) mounted around, and in geared connection with the shaft, to rotate with the shaft (200); an EMA output (300) connected to the gear assembly such that rotation of the motor shaft (200) causes rotation of the output (300) via the gear assembly (400), the output (300) rotating at a speed which is a predetermined fraction of the speed of rotation of the motor shaft based on the gear ratio of the gear assembly; a synchroniser comprising a first conical portion (203) connected to an end of the motor shaft (201), and a second conical portion (901) connected to a ratchet, wherein the synchroniser has an engaged position in which rotation of the first conical portion is transmitted to the second conical portion, and a disengaged position wherein the second conical portion is axially spaced apart from the first conical portion, along the axis (A), such that rotation of the first conical portion is not transmitted to the second conical portion; a solenoid (800) connected to the second conical portion, the solenoid configured to pull the second conical portion along the axis (A) away from the first conical portion when the solenoid is energised; wherein, in an active mode of the plurality of modes, the solenoid is energised and wherein rotation of the motor shaft in either direction of rotation drives the output to rotate; wherein in an anti-extension mode, the solenoid is not energised and the output shaft is connected for rotation, via the synchroniser (900), to the ratchet; and a cam feature (50) arranged to rotate with the output, the cam feature having a cam profile (61) such that when the output (300) is in positive stroke and the solenoid is de-energised, the ratchet is engaged, wherein the ratchet is arranged to prevent rotation of the output in a predetermined direction of rotation; and when the output is in negative stroke, the ratchet is disengage so as to allow rotation of the output in either direction of rotation.


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    ELECTROMECHANICAL ACTUATOR


    Weitere Titelangaben:

    ELEKTROMECHANISCHER AKTUATOR
    ACTIONNEUR ÉLECTROMÉCANIQUE


    Beteiligte:
    POTIER KARL (Autor:in) / BOITARD CORENTIN (Autor:in) / SERRAND MAXIME (Autor:in) / MEDINA RAPHAEL (Autor:in)

    Erscheinungsdatum :

    2023-05-31


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    B64C AEROPLANES , Flugzeuge / F16D COUPLINGS FOR TRANSMITTING ROTATION , Nicht schaltbare Kupplungen



    ELECTROMECHANICAL ACTUATOR

    Europäisches Patentamt | 2022

    Freier Zugriff

    ELECTROMECHANICAL ACTUATOR

    LUNDSTRÖM BO / SEVERINSSON LARS | Europäisches Patentamt | 2019

    Freier Zugriff

    Electromechanical actuator

    SMITH NIGEL PETER | Europäisches Patentamt | 2020

    Freier Zugriff

    ELECTROMECHANICAL ACTUATOR

    POTIER KARL / SERRAND MAXIME / BOITARD CORENTIN et al. | Europäisches Patentamt | 2023

    Freier Zugriff

    ELECTROMECHANICAL ACTUATOR

    POTIER KARL / BOITARD CORENTIN / SERRAND MAXIME et al. | Europäisches Patentamt | 2023

    Freier Zugriff