Electromechanical actuator cylinder

摘要

The electromechanical actuator cylinder provides a casing, an actuation rod mounted to be movable longitudinally relative to the casing, an electric motor provided with a stator and with a rotating rotor shaft, and a mechanism for converting a rotational movement of the rotor shaft into a linear movement in translation of the actuation rod. The actuator cylinder includes at least one roller bearing for guiding the rotor shaft in rotation relative to the casing and providing at least one row of rolling elements. An inner raceway for the row of rolling elements of the bearing is formed directly on the rotor shaft.

主权项

1. An electromechanical actuator cylinder comprising:
a casing, an actuation rod mounted to be movable longitudinally relative to the casing, an electric motor provided with a stator and with a rotating rotor shaft, a mechanism for converting a rotational movement of the rotor shaft into a linear movement in translation of the actuation rod, and at least one roller bearing for guiding the rotor shaft in rotation relative to the casing and having at least one row of rolling elements, an inner raceway for the row of rolling elements of the bearing being formed directly on the rotor shaft, wherein the mechanism includes a screw provided with an external thread, a nut disposed around the screw, having an internal thread and connected to the actuation rod, and a plurality of longitudinal rollers engaged with the external and internal threads or a plurality of balls engaged within the external and internal threads.