An electromechanical actuator of a concealment device, the electromechanical actuator comprising at least: - an electric motor, - a control unit, the control unit being configured to control the electric motor, - a casing, the electric motor and the control unit being housed inside the casing, the casing comprising at least one end wall, - a power supply cable, the power supply cable passing through the end wall of the casing and being electrically connected to the control unit, and - an earthing part, the earthing part being electrically connected to an electrical conductor of the power supply cable, the earthing part being a one-piece earthing blade, the electric motor comprising at least: - a stator, and - a rotor, the rotor rotating around an axis of rotation, characterised in that the stator comprises at least: - a stack of laminations, - windings, and - covers (182C1, 182C2), the covers (182C1, 182C2) surrounding the windings, in that the earthing part is further electrically connected to the stator, in that the earthing part extends parallel to the axis of rotation, from the end wall of the casing and at least as far as the level of the cover (182C2) furthest away from the end wall, and passing right through the stack of laminations, in a direction parallel to the axis of rotation, and in that the earthing part bears elastically, respectively in centrifugal and centripetal (D2, D2') radial directions with respect to the axis of rotation, against the stack of laminations and against the covers (182C1, 182C2). the electromechanical actuator comprising at least: - an electric motor, - a control unit, the control unit being configured to control the electric motor, - a casing, the electric motor and the control unit being housed inside the casing, the casing comprising at least one end wall, - a power supply cable, the power supply cable passing through the end wall of the casing and being electrically connected to the control unit, and - an earthing part, the earthing part being electrically connected to an electrical conductor of the power supply cable, the earthing part being a one-piece earthing blade, - an electric motor, - a control unit, the control unit being configured to control the electric motor, - a casing, the electric motor and the control unit being housed inside the casing, the casing comprising at least one end wall, - a power supply cable, the power supply cable passing through the end wall of the casing and being electrically connected to the control unit, and - an earthing part, the earthing part being electrically connected to an electrical conductor of the power supply cable, the earthing part being a one-piece earthing blade, the electric motor comprising at least: - a stator, and - a rotor, the rotor rotating around an axis of rotation, - a stator, and - a rotor, the rotor rotating around an axis of rotation, in that the stator comprises at least: - a stack of laminations, - windings, and - covers (182C1, 182C2), the covers (182C1, 182C2) surrounding the windings, - a stack of laminations, - windings, and - covers (182C1, 182C2), the covers (182C1, 182C2) surrounding the windings, in that the earthing part is further electrically connected to the stator, in that the earthing part extends parallel to the axis of rotation, from the end wall of the casing and at least as far as the level of the cover (182C2) furthest away from the end wall, and passing right through the stack of laminations, in a direction parallel to the axis of rotation, and in that the earthing part bears elastically, respectively in centrifugal and centripetal (D2, D2') radial directions with respect to the axis of rotation, against the stack of laminations and against the covers (182C1, 182C2).