Abstract:
The invention relates to an electric motor having a rotor and a coiled stator, the rotor including a shaft and two disks that are rotatably fixed to the shaft and provided with permanent magnets, an outer portion of the stator extending from each disk axially parallel to a rotational axis of the rotor and radially beyond same, from the axis. The stator includes a plurality of disjointed bars made of a magnetically conductive material, certain parts of which form the outer portion of the stator. The stator also has a carrier structure holding the bars such that they are fixed in relation to each other, the carrier structure being mounted in such a way that it can rotate on the shaft, axially outside the two disks. The outer portion of the stator extends parallel to the rotational axis, axially outside the disks of the rotor, up to the carrier structure.
Abstract:
The motorized shutter, blind or sun-protection device comprises at least one roll-up element (2; 20), one end of which is kinematically linked to a roll-up element drive roller (1) and the other end of which is attached to pulling strands (3, 4; 15, 16; 22, 23) kinematically linked to a strand drive roller (1; 17, 18; 24, 25), at least one strand return roller (6; 19), and an elastic means (7; 29) keeping the roll-up element and the strands tensioned. It constitutes a balanced system.
Abstract:
The invention concerns a powered rolling shutter whereof the stator of the motor is connected to a fixed support via elastic means (R1, R2) for stopping the shutter in high and low abutment when the resisting torque exceeds a selected value, consisting of two springs (R1, R2) compressed by the stator rotation. The travel distance (12) before on of the springs (R2) is compressed is greater than the travel distance (11) before the other spring (R1) is compressed. The compression is ensured by a mobile element (12) also actuating a switch (18). The travels (c1, c2) required for activating the switch can be inverted. The motor can be mounted on the left or on the right with a differentiated resisting torque for stopping in high abutment and low abutment.