Electromechanical actuator and shading device comprising such an electromechanical actuator

An electromechanical actuator of a shading device,

• the electromechanical actuator (11) comprising at least:
• a casing,
• an electric motor,
• a gearbox, the gearbox comprising at least one reduction stage, the reduction stage comprising a sun gear, a planet carrier and a plurality of planet gears, the sun gear comprising at least one bore,
• a spring-applied brake, and
• a centring shaft,
• the electric motor, the gearbox and the spring-applied brake being mounted within the casing,
• the spring-applied brake comprising at least:
• a coil spring,
• a drum, the drum comprising a friction surface, the friction surface being configured to cooperate with at least one turn of the coil spring,
• an input member, and
• an output member, the output member comprising at least one first bore,
• the centring shaft being mounted inside the first bore of the output member and the bore of the sun gear,
• wherein
• the drum comprises a shoulder, and
• the planet carrier of the reduction stage is configured to bear against the shoulder of the drum.