ITMI970397U1 - PERFECTED MOTORIZED GATE - Google Patents

Description

DESCRIPTION of the industrial utility model

The present invention relates to an improved motorized driveway gate or door.

Motorized driveway gates or doors are currently known which are provided with at least one leaf and comprise actuation means acting on said at least one leaf. The actuation means comprise an electrical system with which either a hydraulic system is associated or, alternatively a mechanical unit, which act on the leaf (if only one is provided) or on the leaf in the other cases. The electrical system comprises an electrical power supply circuit and an electrical control circuit acting with respect to at least one electric motor which acts as an actuator or for at least one hydraulic pump (if the hydraulic circuit is provided) or on at least one reducer (in the case of case a mechanical group is foreseen). This reducer can optionally be of the type comprising a worm screw.

These types of motorized gates have not proved to be sufficiently reliable and therefore unsafe since in the event of a power failure they cannot be opened with the necessary rapidity or even cannot be opened at all as they can become blocked. They can therefore become particularly dangerous especially in the event of a fire. Furthermore, the electrical system necessary for the operation of said gates significantly affects the construction, installation and maintenance costs of said motorized gates as they must be constructed, assembled and managed in such a way as to minimize the danger of electrocution for operators who may find themselves to operate on the gate in adverse weather conditions and therefore of high risk due to the presence of humidity.

The object of the present invention is to provide a motorized gate which overcomes the aforementioned drawbacks, or to provide a motorized gate which can operate independently of the presence of the mains voltage and which is also cheaper and safer than a traditional motorized gate of the same type. These purposes are achieved by an improved motorized gate according to claim 1 and / 2 to which reference is made for the sake of brevity.

By powering the electric motor by means of at least one accumulator battery which can be recharged by means of a battery charger, the improved motorized gate according to the invention can be operated even in the event of a power cut. The improved motorized gate according to the invention is therefore much more reliable than the corresponding traditional motorized gates. Furthermore, the use of very low voltage significantly reduces the costs of construction, assembly and maintenance of the electrical system as the electrical system is much simpler as it is no longer necessary to equip it with specific means and / or measures to protect users and door maintenance technicians from electrocution even in the event that they find themselves operating in conditions of high humidity. The cost reduction is such as to largely compensate for the need to integrate the electrical system with accumulator batteries and the battery charger.

These aspects will become more evident from reading the description which relates to preferred embodiments of the invention and which therefore are to be understood purely by way of example and therefore not limitative.

Figure 1 schematically illustrates an improved motorized gate according to the invention in a first embodiment.

Figure 2 schematically illustrates an improved motorized gate according to the invention in a second embodiment.

Figure 3 schematically illustrates an improved motorized gate according to the invention in a third embodiment.

Figure 4 schematically illustrates an improved motorized gate according to the invention in a fourth embodiment.

With reference to Figure 1, the improved motorized gate according to the invention, generally indicated with 1, comprises, in addition to the gate 2, operating means, generally indicated with 3. In the exemplified case, the means 3 act on a single leaf 4 of the gate 2 I actuation means 3 comprise a hydraulic system 5 and an electrical system 6. The hydraulic system 5 substantially comprises a tank 7 for collecting the liquid (oil), a filter 8, at least one hydraulic pump 9, a non-return valve 10, a maximum pressure valve 11, a flow reversal solenoid valve 12, a first 13 and a second 23 of constant flow valves respectively located upstream and downstream of at least one hydraulic cylinder 14 acting as an actuator for the flap 4. As can be seen from Figure 1, the components of the hydraulic system 5 are hydraulically connected and arranged so that the pump 9 acts as an actuator for the cylinder 14. The electrical system 6 it comprises an electric power supply circuit, generally indicated with 15, and an electric control circuit, generally indicated with 16.

The electric power supply circuit 15 essentially comprises: a battery charger 17, at least one accumulator battery 18, a first fuse 19, a battery disconnect switch 20, a first relay 21 and an electric motor 22 which acts as an actuator for the hydraulic pump 9 a to which it is mechanically connected. As can be seen from Figure 1, the electrical connections between the components of the electrical power supply circuit 15 are made with the aim of ensuring the electrical supply and therefore the operation of the electric motor 22. In the example illustrated, two accumulator batteries are provided to increase reliability. 18 connected in parallel as there could be a risk that a storage battery will short-circuit. The electric motor 22, the storage batteries 18 are of the very low voltage type (preferably 12 Volts in direct current) and the battery charger 17 can be connected to the alternating power supply preferably single-phase at 220 Volts. Again to increase reliability, the battery charger 17 is of the stabilized type. Furthermore, in the exemplified case, the electric power supply circuit 15 is associated with a second relay 24 and at least one emergency light 25 which are activated in the absence of mains power supply. The electrical control circuit 16 essentially comprises a forward-reverse and stop actuation button 26, a second fuse 27 and the aforementioned first relay 21 which constitutes the connecting element between the electrical supply circuit 15 and the electrical control circuit. 16.

The motorized gate of the second embodiment generically indicated with 1A in figure 2 differs from the motorized gate of the first embodiment for the structure of the actuation means 3A which differ from those indicated with 3 in figure 1 in that they are structured in such a way as to comprise a plurality of hydraulic cylinders 14 for operating corresponding leaves 4 of a gate 2. In the exemplified case the gate is of the two-leaf type 4. The actuation means 3A can therefore also control several gates 2. In Figure 2 the elements corresponding to those of Figure 1 have been indicated with the same numerical references. In summary: the hydraulic system 5A differs from the hydraulic system 5 in that it comprises a plurality of hydraulic cylinders 14 (in the exemplified case two) and a single constant flow valve 13.

The opening and closing of the motorized gate 2 is obtained by sending the hydraulic system 5A under pressure and selecting the position of the valve 12 by means of the actuation button 26 which therefore simultaneously controls both said valve 12 and the motor 22.

The third and fourth embodiments of the improved motorized gate, generically indicated with 1B and 1C respectively in figures 3 and 4 differ from the previous embodiments mainly due to the fact that instead of the hydraulic system they comprise mechanical units (a first and a second one) respectively indicated with 28B and 28C while the electrical system in both cases comprises a third multipolar relay 29 instead of the first relay 21. With particular reference to Figure 3, the first mechanical unit 28B comprises a first reducer 30 operated by the electric motor 22 which acts on a pinion 31 meshed with a rack 32 sqlidal to a gate not shown. With particular reference to Figure 4, the second mechanical group 28C comprises a plurality of endless motor-reducer units 33 in a number equal to the leaves of the gate to be controlled, (in the exemplified case two). By way of example only, a motorized gate normally considered "heavy" as it is the size of a 4x4.5 meter driveway door requires a 500 Watt motor which, powered by a 45 Ah accumulator battery, guarantees at least 20 complete opening cycles. and closing of the door also continuous (and therefore not intermittent) without the need to recharge the battery. Again by way of example, the transformer of the battery charger can be as low as 30 VA, with a single-phase 220 Volt current consumption of very few Watts.

The energy absorption is therefore normally such as to allow the use of the actuation means 3-3C also for more than one gate and / or for other pertinent equipment, for example remote controls.

Claims (9)

CLAIMS 1. Improved motorized gate (1, 1A,) provided with at least one leaf (4) and comprising actuation means (3, 3A) acting on said at least one leaf (4), in which said actuation means (3, 3A) they include a hydraulic system (5, 5A) and an electrical system (6) in which: • said hydraulic system (5, 5A) comprises at least one hydraulic pump (9) acting on at least one hydraulic cylinder (14) for each wing (4), said at least one hydraulic cylinder (14) acting as an actuator for said at least one wing (4), said electrical system (6) comprises an electrical power supply circuit (15) and an electrical control circuit (16) acting with respect to at least one electric motor (22) which acts as an actuator for the hydraulic pump (9 ), characterized in that the electric motor (22) is of the very low voltage type and is powered by at least one accumulator battery (18) associated with a battery charger (17) which can be connected to the alternating electrical network. 2. Improved motorized gate comprising actuation means (3B, 3C) acting on at least one leaf (4) in which said actuation means (3B, 3C) comprise an electrical system (6) and a mechanical unit (28B, 28C), in which: • said electric system (6) comprises an electric power supply circuit (15) and an electric control circuit (16) acting with respect to at least one electric motor (22); • said mechanical group (28B, 28C) comprises said at least one electric motor (22) which is operatively associated with at least one reducer (30) or alternatively comprises at least one worm gearmotor-screw unit (33) acting on at least one leaf ( 4), characterized in that the electric motor (22) associated with the gearmotor (30) or the motor of the gearmotor-worm screw unit (33) are of the very low voltage type and are powered by at least one accumulator battery (18) associated with a battery charger (17) which can be connected to the alternating mains. 3. Improved motorized gate as per claim 1 and / or 2, characterized in that the electric motor (22) and the motor of the worm gearmotor unit (33) are of the single-phase direct current type and the battery charger (17) can be connected to a low voltage electrical network. 4. Improved motorized gate as per claims 1 and / or 2 characterized in that the electric motor (22) and the motor of the worm gearmotor unit (33), the accumulator battery (18), are of the type at very low voltage and that the battery charger (17) is of the type connectable to a low voltage electrical network. 5. Improved motorized gate according to claim 1 and / or 2 characterized in that the battery charger (17) is of the stabilized type. 6. Improved motorized gate as per claim 1 and / or 2 characterized in that it comprises two accumulator batteries (18) placed in parallel. 7. Improved motorized gate as per claim 1 and / or 2 characterized in that the electric power supply circuit (15) is associated with a second relay (24) and at least one emergency light (25) which are activated in the absence mains power supply. 8. Improved motorized gate as per claim 1 and / or 2 characterized in that the actuation means (3, 3A, 3B, 3C), i.e. the electrical system (6) and the hydraulic system (5, 5a) or the mechanical units (28B, 28C) are suitable for the operation of a plurality of gates (2). 9. Motorized gate improved as described and illustrated.