Actuator for the actuation of at least one movable member, in particular for changing gear ratios in a motor vehicle transmission

An actuator for the actuation of at least one movable member of a motor vehicle transmission, said actuator comprising:

• a housing and a cover defining an internal volume in which are received at least one electric motor having a stator and a rotor mounted on a rotor shaft extending along an axis X1, a motor pinion fixed to the opposite end of the rotor shaft to the rotor, a circuit board for supplying power to the stator and for controlling the electric motor, a reduction mechanism driven by the motor pinion,
• wherein an electrical connector for supplying power to the electric motor is attached to the housing or to the cover, the electrical connector being connected to the circuit board,
• wherein a seal is positioned directly between the electrical connector and the housing or the cover, the seal being located in an annular groove of the electrical connector,
• wherein the electrical connector includes a base encircled by the annular groove and positioned within an opening in the housing or cover and a structure extending outward from the base to surround electrical tracks to be attached to an external connector, and
• wherein said electrical connector incorporates a semipermeable membrane in the base of the electrical connector to allow an exchange of gas between inside the internal volume of the actuator and the external surroundings outside of said housing and of said cover.