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US 12,371,944 B2Granted
Electromechanical actuator and shading device comprising such an electromechanical actuator
AssigneeSomfy Activites SA
InventorsDiane Marchal, Adrien Brondex, Margaux Foissard, Rémi Sourain
Life of this patent
Estimating the term…
Abstract
An electromechanical actuator comprises a casing, an electric motor, a gearbox, a spring-applied brake (25), and a centring shaft (71). The brake (25) comprises a coil spring (48), a drum (49), an input member (50) and an output member (51). The output member (51) comprises a first bore (73). The shaft (71) is mounted inside the first bore (73) of the output member (51) and a bore of a sun gear (40) of a reduction stage (38) of the gearbox. The drum (49) comprises a shoulder (90). Furthermore, a planet carrier (66) of the reduction stage (38) is configured to bear against the shoulder (90) of the drum (49).
Claims20
An electromechanical actuator of a shading device,
- the electromechanical actuator comprising:
- 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:
- 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, to radially center the planet carrier of the reduction stage with respect to the drum, in a direction orthogonal to an axis of rotation of the electromechanical actuator, and to provide an axial limit stop of the planet carrier of the reduction stage with respect to the drum, in the direction of the axis of rotation.
12 more elements
An electromechanical actuator of a shading device,
- the electromechanical actuator comprising:
- 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:
- 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,
- the planet carrier of the reduction stage is configured to bear against the shoulder of the drum,
- the spring-applied brake further comprises a cover, and
- the shoulder of the drum constitutes an axial limit stop of the planet carrier of the reduction stage with respect to the drum, ensuring an operating play between the cover and the planet carrier of the reduction stage.
14 more elements
An electromechanical actuator of a shading device,
- the electromechanical actuator comprising:
- 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:
- 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,
- the planet carrier of the reduction stage is configured to bear against the shoulder of the drum,
- the planet carrier comprises at least one bore,
- the gearbox further comprises a further reduction stage, the further reduction stage comprising a further sun gear, a plurality of further planet gears and a further planet carrier, the further sun gear comprising at least one bore, the further planet carrier comprising at least one bore, and
- the centring shaft is mounted inside the bore of the planet carrier of the reduction stage, the bore of the further sun gear of the further reduction stage and the bore of the further planet carrier of the further reduction stage.
15 more elements
Dependencies are inferred from the claim text.