FR3021687A3 - MOTORIZED ACTUATION SYSTEM OF A CLOSURE OF A BAY ACCESSING A LOCAL - Google Patents

Abstract

A motorized actuation system of a closure of an access bay to a room provided with a movable apron (5) closing the bay, comprising at least: - a shaft (1) disposed at the end upper of an opening (2) of a room to close and, in use, supported by a corresponding wall (3, 4) of said room; a plurality of cylindrical housings (6) rotatably associated with the shaft (1) to rotate thereon and being able to be coupled to the deck (5); a plurality of elastic elements (7) defining windings connected to the shaft and to a housing (6); - a motor unit (8) for moving the apron (5), in both directions, comprising a ring gear (9) rotatably coupled to the shaft and attachable to the deck (5) and a geared motor (10). ) with a toothed member (11) for meshing with the ring gear.

Description

1 DESCRIPTION MOTORIZED ACTUATION SYSTEM OF A CLOSURE OF A BAY ACCESSING A LOCAL This utility model relates to a motorized actuation system of a closure (industrial, commercial and garage) of a bay access to a local. In the field of closing systems of premises or spaces such as, for example, garages, shops, workshops, etc., there are different types of apparatus among which, precisely, motorized rolling shutters. The rolling curtains comprise: - a shaft disposed at the upper end of the opening of the room to be closed and fixed to a pair of associated plates (secured) to the corresponding vertical wall delimiting the opening of the room; - an apron (with different types of links) associated with the tree and can be wrapped around the tree; a plurality of compensation springs, wrapped inside corresponding housings, said springs being connected (fixed) to both the shaft and the housing and being spaced apart along said shaft; - An operator fixed with respect to the shaft and provided with a toothed member meshing with an internally toothed ring gear (or clutch) wedged on the shaft to allow its rotation, in both directions, for the unwinding and the winding of the flexible apron.

In the minimum configuration, the motorization is provided with a support ring integral with the shaft to keep the motorization in suspension. Usually, the flexible apron has its lateral edges which are arranged in vertical guides associated with the vertical walls which define the opening of the room.

At present, the functional components of these curtains, in particular the shaft, the ring gear, the spring housings and the flexible apron, are designed according to standardized dimensional parameters, namely diameters for shaft, ring gear, housings, and length development for the apron. These dimensional parameters are dictated, in particular, by dimensional adaptability requirements, for example, rooms for garages, workshops and stores which, for a long time, have been constructed with opening days having transverse dimensions and height development still included in predefined ranges, as well as the distances between the upper end of the opening day and the ceiling of the room. Consequently, the dimensional parameters of the rolling curtains have also stabilized in this direction and this has, in part, also facilitated a rationality of the component stocks for the manufacturers of these rolling curtains.

However, over time, the requirements of the real estate market and the construction costs of premises used as garages, shops, workshops, etc., have increased with a consequent change in dimensions and spaces useful for the application of the curtains of the building. type described above.

The spaces useful for the application of rolling curtains, in fact, are mainly determined by the thicknesses (transverse) of the vertical walls of the opening day of the room, the useful depth (height) of the upper zone of the vertical walls intended to the fixing of the support plates which, in fact, have a maximum development equal to the maximum diameter attainable by the sum of the diameter of the housing housings of the springs and the thickness of the apron completely wound on the housing housings ( the latter obviously depends on the total length of the deck). In premises where these usable spaces are smaller than the minimum dimensions required by the rolling curtain, so-called "tilting" closures, or "sectional closures" or "sliding closures" are used. These latter types of closures have a cost of realization (especially if equipped with a motorization), transport and implementation higher compared to the rolling curtains described above.

Both types of closures reduce the effective internal volume of the room where they are applied because both structures must occupy an upper interior (ceiling) or a side wall of the room for their movement. It should also be noted that a particularly felt need in the sector in question is to optimize the ratio between the height of passage of the opening and that of the bulk of the curtain proper. The object of the present invention is to provide a motorized actuation system for a closure of an access bay to a room that overcomes the disadvantages of the known technique mentioned above. In particular, the present invention intends to propose a motorized actuation system for closing an access bay to a room capable of adapting to the different types of closure of the premises while maintaining its basic structure unchanged and guaranteeing a high standard of quality. Another object of the present invention is to propose a motorized actuation system for closing an access bay to a room capable of defining a structural standard that can be used in all types of closure of premises and which guarantees, in same time, great reliability, 25 safety and aesthetics. Another object of the present invention is to propose a motorized actuation system for closing an access bay to a room that can be installed on systems for closing access bays to premises. having a particularly high passage height.

Yet another object is to provide a motorized actuating system for a closure of an access bay to a room in which the ratio between the passage height of the opening and that of the space requirement. curtain itself is optimized. Said objects are fully attained by the motorized actuation system of a closure of an access bay to a room subject of the present invention, which is characterized by the content of the claims reported hereinafter. In particular, the motorized actuation system for a closure of a room access bay comprises a shaft disposed at the upper end of an opening of the room to be closed which, in use, is connected to 10 a corresponding wall of the local delimiting the access bay. The closure also includes a movable apron to open and close the access bay. The motorized actuation system also has a plurality of cylindrical housings rotatably attached to the shaft for rotation thereon and a plurality of resilient members defining windings. Each elastic element is connected (fixed) at its ends to the shaft (at one end) and the housing (at the other end). The motorized actuating system further comprises a motor unit for moving the apron, in both directions, comprising a ring gear rotatably coupled to the shaft and a gear motor having a toothed gear which meshes with the ring gear. In this model, the shaft has a diameter of 61 mm or less. Still according to the present model, the cylindrical housings and the ring gear 25 have a corresponding diameter whose external size is equal to or less than 190 mm. This and other features will become more apparent in the following description of a preferred embodiment, illustrated by way of non-limiting example only in the accompanying drawings, in which: - Figure 1 shows a motorized rolling shutter wherein the motorized actuation system according to the present model is applied in a rear perspective view with some parts omitted to reveal others; Figure 2 shows the motorized rolling shutter of Figure 1 in a front view, with some parts omitted to reveal others; - Figure 3 shows the motorized rolling shutter of the previous figures in a side view. In accordance with the accompanying drawings, numeral 100 indicates a motorized actuation system for a closure (industrial, commercial and garage) of an access bay to a room. The closure has an apron 5 (of any type) which is movable to allow the closure of the premises. The motorized actuation system is operationally active on the deck 5, to allow movement thereof and thus be able to close / open the access bay to the room. The motorized actuation system is used to close and open an access bay to a room. By "access bay" is meant an opening with two vertical walls 3, 4 and an upper rail for access to a local delimited 20 as a garage, a store, a workshop, etc.. The actuating system 100 comprises a shaft 1 disposed at the upper end of the opening 2 of a room to be closed and, in use, connected to a corresponding wall 3, 4 of the room defining the access bay. Referring to the accompanying figures 1 to 3, the closure system shown is a rolling shutter. The curtain shown in the attached figures also comprises an apron 5 that can be rolled up and unrolled around the shaft 1 to open and close the access bay. Still referring to the actuating system, it should be noted that the actuating system comprises a plurality of cylindrical housings 6 rotatably associated with the shaft 1 to rotate thereon. The actuating system 100 also comprises a plurality of elastic elements 7 defining windings. According to the embodiment shown, the elastic elements 7 are wrapped each in a corresponding cylindrical housing 6. Each elastic element 7 is connected, at its ends, to the shaft 1 and the housing 6. In addition, the actuating system 100 comprises a motor unit 8 for moving the deck 5, in both directions, comprising a 10 toothed ring 9 rotatably coupled to the shaft 1 and a geared motor 10 having a toothed element 11 which meshes with the ring gear 9. According to the present invention, the shaft 1 has a diameter D1 equal to or less than 61 mm.

Still according to the present invention, the cylindrical housings 6 and the ring gear 9 have a corresponding diameter D6, D9, the external dimensions of which are equal to or less than 190 mm. Thanks to this particular dimensional combination, the actuating system 100, as will be seen in the remainder of this description, can be mounted in a multiplicity of premises structurally different from each other and with dimensions (particularly vertical) particularly high. Preferably, referring to the rolling curtain illustrated in the attached figures, it should be noted that the curtain also comprises a pair of plates 13, 14 for supporting the shaft 1 in height (see Figure 2). Each plate 13 and 14 is fixed to the corresponding vertical wall 3, 4, close to the upper end of the opening 2 of the room. Each plate 13 and 14 is provided with a cradle 15 projecting in which the corresponding end of the shaft 1 is positioned and blocked.

The rolling apron 5 mentioned, in the case illustrated only by way of non-limiting example, is composed of a plurality of links 16 3021687 7 articulated to one another in succession, thus connected so as to be able to modify their mutual angular position and make essentially flexible structure of the deck for a winding and unwinding of the deck 5 to open and close the room.

The links 16 may be of metal or of an assimilable material, or of a synthetic plastics material. In addition, the links can be of invoice, design or conformation varied according to the needs of closure or the use of the local. Note, more generally, that the deck 5 can also be continuous, or 10 in all cases of different typology, without departing from the scope of protection of this innovation. Preferably, the shaft 1 has a diameter D1 (outside) of between 30 mm and 60 mm. Referring to the diameters of the shaft 1, it should be noted that these preferably have the following dimensions: 1 inch, 1 inch and 1/4, 1 inch and 1/2, 2 inches, 2 inches and 1/2, 3 inches. In this respect, the shaft 1 preferably has a diameter D1 of 60 mm. Alternatively, the shaft 1 preferably has a diameter D1 of 48 mm. Alternatively, the shaft 1 preferably has a diameter D1 of 42 mm. Alternatively, the shaft 1 preferably has a diameter D1 of 33 mm.

Preferably, the cylindrical housings 6 and the ring gear 9 have a corresponding diameter D6, D9, the external dimensions of which are between 140 mm and 190 mm. Even more preferably, the cylindrical housings 6 and the ring gear 9 have a corresponding diameter D6, D9, the external dimensions of which are equal to about 145 mm. Alternatively, the cylindrical housings 6 and the ring gear 9 have a corresponding diameter D6, D9, the external dimensions of which are equal to approximately 167 mm. Alternatively, alternatively, the cylindrical housings 6 and the ring gear 30 have a corresponding diameter D6, D9 whose external dimensions are equal to about 185 mm.

The dimensionings identified for the shaft 1, the housings 6 and the ring 9 make it possible to combine a maximum bulk of the above elements and the rolled deck 5, with a maximum diameter of space DT, which is such as to allow the installation in rooms with reduced housing spaces, but with a very wide passage height, while maintaining a high quality and reliability of the components that constitute the curtain 100. Indeed, thanks to these diametrical dimensions, it is It is possible to exploit a greater development of the deck 5 without affecting the overall dimensions with rolled apron (as can be seen in FIG. 3). Note that each housing 6 is composed of an inner ring 6a with bearings (not shown) to be rotatable relative to the shaft 1 (fixed), while the outer body is defined by two opposite circular walls 6b housing a corresponding resilient member 7 which, for example, is a coil spring wound in a spiral within the housing 6. The spring 7 is secured, as said, on one side to the shaft 1 fixed and the other side to the housing 6. The ring 9 is toothed internally.

This ring 9 is supported by a structure 18, fixed to the shaft 1. Between the structure 18 and the ring 9, are interposed a plurality of bearings (preferably three bearings). Preferably, but in a nonlimiting manner, the bearings are arranged at 120 ° relative to each other (with reference to the axis of the shaft).

On the ring gear 9 is geared toothed member 11, which is keyed to a shaft coming out of the geared motor 10; in this way, the ring gear 9 can be moved in both directions with corresponding movement of the deck 5. Preferably, the geared motor 10 is fixed to the structure 18.

Preferably, the geared motor 10 is powered by a DC power source 12a (represented by a block in the figures).

Alternatively, the geared motor 10 may be powered by an AC power source 12b (represented by a block). As can be seen in Figures 1 and 2, the motor unit 8 (as a whole) is unique and is arranged in the center of the shaft 1.

When the development of the closure (in width and, possibly, also in height) is of large size, the motor unit may be composed of two distinct twin groups 8a and 8b arranged at the corresponding ends of the shaft 1 (see line in lines in Figure 2).

Thanks to a closure thus structured, the prefixed goals are achieved by means of a dimensional combination of the main functional components which is such as to enable the motorized system to be mounted in a multiplicity of premises which are structurally different from one another and with dimensions (in particularly vertical) particularly high.

This dimensional combination allows the motorized system to adapt to the different types of closure of the premises, maintaining its basic structure unchanged and guaranteeing a high standard of quality. With this different structural standard, multiple openings of premises are covered while ensuring high reliability, safety and aesthetics at lower costs than other types of closures. The dimensional combination of the motorized actuation system also allows its installation on access bays to premises 25 having a particularly high passage height. An advantage of the present invention, which makes it particularly interesting for installers, lies in the fact that it has been found, experimentally, that - at equal torsion - the elastic force of the elastic elements 7 (springs) is inversely proportional to the 30 maximum diameter of the windings themselves, that is to say the diameter of the casings 6 spring holder.

The following table shows how, for a spring having an inside diameter of 60 mm and a thickness of 1.1 mm, the force (in kg) decreases as the outside diameter increases (housing). Case 145 mm 180 mm 200 mm 220 mm 240 mm Spring 60 x 1.1 38 kg 30 kg 26 kg 23 kg 20 kg 5 In the present invention, the springs used are smaller and therefore allow elastic forces to be obtained. high. This means that the installer can reduce the number of resilient elements installed in the closure system or, alternatively, can reduce the thickness of these elastic members. Advantageously, this results in significant savings for the end customer, the latter having a motorized system with high performance and reduced size. According to the invention, there is also defined a closure of an access bay to a room, comprising the motorized actuating system described and an apron 5 for closing said room, coupled to said cylindrical housings 6 and to said ring gear 9 to be moved to open and / or close the premises. According to another embodiment not shown, the closure is configured so that the apron, between the closed position and the open position, does not wrap around the shaft but is moved and maintained in its extended configuration. The deck is thus guided (preferably bilaterally) by appropriate guides, attached to one or more walls of the access bay.

According to this embodiment, the apron is connected to the spring housings by connecting elements (for example, strips) forming part of the closure system. Each connecting member is attached at one end to the apron and at the other end to the spring housing or crown. In particular, at least one of the connecting elements is fixed to the ring. In use, when the power unit is actuated, the junction elements are wound around the spring carriers and the crown. In this application, the elastic elements defining windings, each connected at their ends to the shaft and to a housing, preferably comprise helical springs, wound around the shaft.

Claims (14)

REVENDICATIONS1. Motorized actuation system for a closure of an access bay to a room provided with a movable bay closing apron (5), comprising at least: a shaft (1) disposed at the upper end an opening (2) of a room to be closed and, in use, supported by at least one corresponding wall (3, 4) of said space delimiting the access bay; a plurality of cylindrical housings (6) rotatably associated with the shaft (1) to rotate thereon and being able to be coupled to the deck (5); a plurality of elastic elements (7) defining windings each fixed at their ends to the shaft (1) and to a housing (6); - a motor unit (8) for moving the deck (5), in both directions, comprising a ring gear (9) rotatably coupled to the shaft (1) and attachable to the deck (5) and a geared motor (10) having a toothed member (11) for meshing with the ring gear (9); characterized in that at least: - the shaft (1) has a diameter (D1) equal to or less than 61 mm; - The cylindrical housings (6) and the ring gear (9) have a corresponding diameter (D6, D9) whose external size is equal to or less than 190 mm. 2. The system of claim 1, wherein the shaft (1) has a diameter (D1) of between 30 mm and 61 mm. 3. The system of claim 1 or 2, wherein the shaft (1) has a diameter (D1) of about 33 mm. 4. The system according to one of claims 1 to 2, wherein the shaft (1) has a diameter (D1) of about 42 mm. 3021687 13 5. The system according to one of claims 1 to 2, wherein the shaft (1) has a diameter (D1) of about 60 mm. 5 6. The system as claimed in any one of the preceding claims, in which the cylindrical housings (6) and the ring gear (9) have a corresponding diameter (D6, D9) whose external dimensions are between 160 mm and 190 mm. . 10 7. The system as claimed in any one of the preceding claims 1 to 6, in which the cylindrical housings (6) and the ring gear (9) have a corresponding diameter (D6, D9) whose external dimensions are equal to 145. mm. 15 8. The system according to any one of the preceding claims 1 to 6, wherein the cylindrical housings (6) and the ring gear (9) have a corresponding diameter (D6, D9) whose external dimensions are equal to 167 mm. 20 9. The system according to any one of the preceding claims 1 to 6, wherein the cylindrical housings (6) and the ring gear (9) have a corresponding diameter (D6, D9) whose external size is equal to 185 mm. 25 10. The system according to any one of the preceding claims, wherein the geared motor (10) is fed by a DC power source (12a). The system of any preceding claim, wherein the geared motor (10) is powered by an AC power source (12b). 3021687 14 12. The system according to any one of the preceding claims, wherein the motor unit (8) is unique and placed in the center of the shaft (1). 5 13. The system according to any one of the preceding claims, wherein the power unit comprises two separate units (8a, 8b), arranged at the corresponding ends of the shaft (1). 10 The system according to any one of the preceding claims, wherein said elastic members (7) defining windings are disposed within said cylindrical housings (6).