Abstract:
Support piece (16; 116) having a surface for arranging a friction braking element (20;120). The surface is provided with locking means (32, 36; 136) for locking the braking element (20; 120). The support piece is characterized in that the locking means (32, 36; 136) are formed so as to retain the braking element (20; 120) at least along a section of its peripheral edge.
Abstract:
Device (10) for fixing a pulley (40) comprising a rotating pin (12) on the outer surface of which the pulley (40) may be fixed, said rotating pin (12) having at least one locking element (50) movable between a first locking position where it retains the pulley (40) and a second releasing position where it does not retain it, the at least one locking element (50) being coupled with at least one element (60) which can be operated by the user so that the displacement of said at least one element (60) which can be operated by the user causes the displacement of said at least one locking element (50) between said first and second position.
Abstract:
Friction braking device (10; 100; 200) comprising a drive shaft (12; 112; 212), a friction braking element (16, 20; 116; 216), and members (22; 142, 150; 242, 250) for transmission of the movement between the shaft (12; 112; 212) and the braking element (16, 20; 116; 216), able to move the braking element (16, 20; 116; 216) axially with 5 respect to the shaft (12; 112; 212) between a first brake-engaged condition, where the braking element (16, 20; 116; 216) is locked by the contact with an engaging surface (18), and a second brake-disengaged position, where the braking element (16, 20; 116; 216) is separated from the engaging surface (18) and is able to rotate driven by the shaft (12; 112; 212). The device is characterized in that the transmission members (22; 142, 150; 242, 10 250) comprise non-permanent coupling means (42, 50; 142, 150; 242, 250, 298, 299) which can be operated so as to engage and disengage the shaft (12; 112; 212) and the braking element (16, 20; 116; 216) with a relative movement of these latter two parts.
Abstract:
The invention relates to a tubular motor (20) adapted to drive a roller (DR), on which sliding or roll-up shutters (TP), roller blinds, or the like, as typically used in connection with windows and doors, can be rolled up, comprising a head (22) and a tubular body (24). The head in turn comprises a first gear ring (G1 ) mounted externally and in a rotatable manner on said head, so as to be able to receive rotary motion from the roller, and provided with a first toothing (TH1), and a second gear ring (G2) mounted internally in said head and provided with a second toothing (TH2), wherein said second toothing is operatively connected with said first toothing, and said second gear ring is operatively connected with an end-of- travel or stop device (S) provided inside the head, so as to be able to transmit a rotary motion corresponding to the rotation of the roller to said device. In view of reducing the size of the gear motor and cutting costs, said first and second toothings extend along circumferences that have different diameters.
Abstract:
Described is a power-supply device (60) for energizing a tubular motor reducer, or gearmotor, of a drive system (20) for roll-up shutters (TP), roller blinds, and the like, as typically used in connection with windows and doors, comprising sliding contacts (66) alternating with insulating members (68), all of them stacked upon each other, and a casing (70, 80) for containing the stack of alternating sliding contacts and insulating members. In view of reducing part count and simplifying assembly, the body of said containment casing (70, 80) and/or an element (66, 68) of said stack comprises at least one elastically flexible member (78) integrally therewith, said at least one elastically flexible member being adapted to be in a compressed state when the device is assembled and, as a result, to exert an elastic reaction onto the stack so as to keep all component parts thereof constantly packed together and in tight contact with each other.
Abstract:
Method for moving a roller shutter at a controlled speed along an upward or downward path and associated actuating system, comprising the steps of setting in motion the roller shutter by means of motor means; and braking the roller shutter using braking means independent of the action of the motor means, so as to maintain a desired speed of the roller shutter along the path.
Abstract:
A transmission arm for actuating devices of gates or doors is described, comprising a first rigid segment (20) connectable to a motor (26), a second rigid segment (22) rotatably pivoted at one end to the first segment and at the other end to the gate or door (GT). For easing the installation and the fitting to different actuating devices, the arm comprises means (30; 60) for longitudinally adjusting inside the first and/ or second segment the position of a relevant rotation axis (X) thereof. A segment, once the length thereof has been adjusted, can be cut.
Abstract:
Electromechanical rotary actuator (52) for moving shutters (13) of gates or doors, comprising a motor enclosed in a casing (50), a rotating arm (56) connected to the motor for moving the shutter or swinging door, a movable catcher (72) for defining a stop of the rotating arm (56), a cover (58) over the rotation centre of the arm (56), characterised in that the catcher (72) is mounted outside the cover (58).
Abstract:
The power-operated door opening and closing system (10) of the present invention is of the kind adapted to be attached to the ceiling and comprises: an electric motor, an electric motor control unit, an electric push-button (P) actuating switch to control the motor operation, a string (30) or the like, and a mechanism adapted to convert the pulling of the string into a pressure upon the push-button switch or a pull of the pull-type switch.
Abstract:
It is described a drive operator (10) for gates (CG) or doors comprising a gear motor formed by an electric motor and a reduction unit with an output shaft; an articulated arm (30, 132) to be connected to the gate or door which is turnable and has at one end (34, 134) a crown gear (36, 136); a transmission member (70, 170) to transmit the rotary motion of said output shaft to the crown gear. To improve the stability and the arm centering, one or more satellite gears (60, 160) are placed between the transmission member and the crown gear, so that the transmission member, the satellite gears and the crown gear form a kinematical arrangement of the epicyclical type.