The utility model relates to a motor
assembly for a curtain track, the side surface of an upper shell is provided with an opening, a belt
pulley is arranged in the upper shell, a belt is sleeved on the belt
pulley, and the belt is exposed from the opening; a motor is arranged in the lower shell and connected with a belt wheel through a gearbox, the conveying end of the motor is rotationally connected with a gearbox base, a
planet carrier base and a
planet carrier cover are arranged in the gearbox, the output end of the motor is exposed out of the
planet carrier base, a sun wheel is arranged on the portion, located in the planet carrier base, of the output end of the motor, and a planet wheel is rotationally connected in the planet carrier base. A flat shaft is rotationally connected to the planet carrier cover, a
clutch seat is arranged between the planet carrier cover and the gearbox cover, a
crank is rotationally connected to the
clutch seat, magnetic beads are arranged on the two sides of the
crank, an output rod is arranged on the outer side of the
crank in a sleeving mode, and the output rod is connected with a belt
pulley; the motor is driven by a circuit board, and the circuit board is integrated in the power plug. The utility model has the advantages of low
failure rate, small volume and lower production and maintenance cost.