WO1995011365A1

WO1995011365A1 - Special security profiles for rolling shutters and their movement

Info

Publication number: WO1995011365A1
Application number: PCT/IT1994/000156
Authority: WO
Inventors: Quinto Giovanetti
Original assignee: Quinto Giovanetti
Priority date: 1993-10-18
Filing date: 1994-09-27
Publication date: 1995-04-27
Also published as: EP0674743A1; ITRA930014A0; IT1265955B1; ITRA930014A1; AU7861294A

Abstract

The invention realized a rolling safety shutter that has a considerable separation between the slats that transforms it into a grating that can be used for day and night protection of the place.

Description

DESCRIPTION

Of the invention with the title of :

"Special security profiles for rolling shutters and their movement."

For new systems of armed rolling shutters the following patents have been issued in the name of the inventor Giovanetti Quinto: Italian Patent n°.1187106 dated 16/12/87 absorbed by European Patent n°.0248837 dated 01/12/86; Italian Patent n°.1234471 dated 18/05/92.

The following have also been deposited: the application for Italian Patent n°. RA- 92A00011 dated 10/07/92 and that of International Patent n°.PCT/IT93/00065 dated 22/06/93. The present invention, though autonomous, completes the series of the preceeding ones by the same author creating new profiles for the composition of the rolling shutters that, while using the technical innovations already patented, with the present separating of the slats one from another, realizes a grating for continuous use for defending the place allowing for an abundant passage of light and air. Therefore the invention eliminates the present system of the joining together of the various slats of the rolling shutters with a hooked extension of their body, and carries out such joining together by means of the insertion between them of a separate profile (10) that has the function of joining them and allowing for a spacing between the slats corresponding to its height (fig. 5-6), as well as easy folding for the rolling allowing for an angle of about 90 degrees. - Considering that the pieces of the internal armouring are highly resistant steel and that the single slats result to be strongly fixed by means of the special guides (fig.9) to the side walls, intrusion through this rolling shutter is very difficult requiring the breaking in by means of heavy equipment as well as long and noisy work. - These shutters can replace the gratings installed outside the windows also offering the advantage of a total and immediate closure or opening in case of necessity.

- The movement takes place by means of special mechanical devices that are operated electrically or manually. - The application is easy in all buildings as their design is in harmony with their aesthetics. MECHANICAL DEVICE AND WORKING PROCESS

- The slats of the rolling shutter can be produced in extruded metal (1) or in folded sheet (5) in various sizes and thicknesses in relation to the required protection. They have a groove in the upper part (3) for holding the hook (11) of the profile

(10) that joins them one to another. Those in extruded metal have a greater thickness in the base with hole (4) in which a steel rod (15) is inserted to hold the hook (11) that penetrates into the body of the slat (1) through a hole (9) obtained by milling in the base of the same in exact correspondance with the teeth of the joining profile (10).

The number of hooking teeth (11) of the profile (10) is in ratio to the weigth of the slats to be raised.

- Both types of slats (1-5) in the upper part have an area delimited by flaps (2) to receive a square, tempered, stainless steel tube (12) that serves for the armouring and for the insertion of the other pieces (13-17).

- To strengthen the resistance of the slats, another square or a round tempered stainless steel rod (13) is inserted into the tube (12) of a length that is shorter than the tube (12) to leave space for the lateral joint (17) in the cavity (18) of which the connecting pin (16) for linking the slat to the guide (fig.9) will be screwed. The joints (17) are blocked in the tube (12) by punching the tube itself over their notches (19). The tube prepared in this way is then fitted into the slat (fig.5-6).

- A stainless steel support (14) with a hole (4) to receive a steel rod (15) is introduced into the plate slats. The support (14) also has other holes that correspond exactly to those carried out in the base of the slat (9) for the passage of the hooks (11).

- Into the holes (9) of the slats (1-5) layed out on a table are then fitted the teeth

(11) of the connecting profiles (10) that remain blocked there by the introduction of a rod (15) into a hole 4.

- At this point the side plugs (7) are fitted and the pins (16) are screwed in that permanentely fix all the components of the slats creating a blind that can be rolled that is fitted into the lateral guides (fig.9) and connected to a device for movement fitted above the window.

- The rolling and the unrolling of the slatted blind, for the opening and the closing of the window opening, takes place by means of the traction or the releasing of the two steel cables (24) connected at the top to the pulleys (23) and the bottom to the pin (16) of the first slat in contact with the sill. In this way the rolling up of the blind around the rotating tube (21), that turns connected to two lateral pulleys (23) always takes place with the slats closed together, avoiding the cumbersome volume that would be caused by rolling the blind with the slats separeted. The lowering of the blind alsotakes place with slats closed together and carries out the total closure ofthe window. - Desiring the separation ofthe slats for the passage of air and light, a mechanism is put into action that first of all detaches the connecting pins (31) of the rotating tube (21) to the pulleys (23), making the movement autonomous, then making the tube (21) only rotate that by means of the connections (37) pulls and rolls up the first upper slat of the blind and one by one the following ones separating them one from another until the limit of the extension permitted by the length of the hook (10) that joins them together. When the spacing reaches the last slat at he bottom in contact with the sil the turning tube automatically stops.

- From the position with the slats separated, the shutter can only return to that of total closure with the inversion of the running of the rotating roller (21) that unwinding the slats (1-5) places them by force of inertion one on top ofthe other causing the penetration into their body ofthe connecting hooks (fig.5-6 n°.10).

- For the partial or total opening of the window a control inserts the pins (31) placed in the two covers (22) ofthe rotating tube (21) in the gears ofthe pulleys (23), coupling tube and pulleys in a single movement. The cables (24) are in this way wound round the pulleys (23) pulling up the slatted blind as far as the position desired.

- So that each slat (1-5) of the rolling shutter always remains blocked in the position in which it is found by a special bolt consisting of a shaft with comb like teeth (39) situated in the lateral guides (20), a patented system with the declared application dated 10/07/1992 n°. RA-92000011, any shifting of their position can only take place after the free ing ofthe movement ofthe connecting pins (16) that connect to the guides (20). Therefore, each command of variation of position of the slats is preceeded, in an automatic way, by the setting into action of the armature(32) of the magnets (27) that acts on the lever (33) that turning the toothed shaft ofthe bolts (39) frees or blocks the running ofthe pins (16).

All the movements of the rolling shutter are synchronized by means eletromechanical or manual systems already on the market and easy to use. LIST OF REFERENCE NUMBERS

1) Profile ofthe slat in extruded metal.

2) Inside flaps for support of armour (12).

3) Seat of hook (11) for joining of slats.

4) Hole for insertion of steel rod (15).

5) Profile of slat in bent metal sheeting.

6) Inside flaps for holding support (14).

7) Side plug for closing slats (1-5).

8) Hole in plug for the passage ofthe pin with head (16).

9) Hole in the base ofthe slats (1-5) for the passage of hook (11).

10 Steel profile with teeth for joining of slats (1-5). 11 Hooked teeth. 12 Steel tube for containing and armouring. 1 Steel rod for armouring. 14 Metal support with various holes (4-9). 15 Steel rod for holding hook (11). 16 Pin with head for connecting slat (1-5) to the guide (20). 17 Additional cable to insert in the tube (12). 18 Threaded hole for screwing in pin (16). 19 Notches for blocking the joint (17) in the tube (12). 20 Lateral guides for hooking on slats (1-5). 21 Rotating tube in sheet metal for rolling up the slats (1-5). 22 Side cover for closing of tube (21). 23 Pulleys with plate wheel for rolling up the slats (1-5). 24 Steel cable for connecting pin (16) to pulley (23). 2 Ball bearing ofthe pulley. 26 Geared electric motor. 27 Pair of autonomous magnets. 28 Magnet bar (27) for moving bar (29).

29; Bar for insertion of pins (31) into the pulley (23).

30 Disc for inverting movement of bar (29). 31 Insertion pin in the plate wheel ofthe pulley (23). 32 Armature of magnet (27) for movement of bar (33). 33 Bar for moving bolts (39) in the guides (20). 34 Wheel for transmitting movement from motor (26) to tube (21). 35) Bar for actioning manual engagement (31) ofthe pulley (23).

36) Wheel for working the rotating tube (21) manually.

37) Attachment of rolling blind to the tube (21).

38) Support for mechanism.

39) Toothed shaft for blocking the pins (16) in the guide (20).

40) Winding rim for pulleys (23).

41 ) Armature of motor (26).

Claims

1) Profiles in extruded metal (1) and in sheet metal (5) for the formation of security rolling blinds for windows, with slats (1-5) separated one from another by the use of internal profiles (10) connected by means of pins (16) to the lateral guides (20). Profiles (1-5) characterized by the fact of having in the upper part a cavity (3) for the fitting in ofthe hook (11) of the intermediate profile for the joining ofthe slats (1-5) as well as the internal flaps (2) for holding a steel tube (12). 2) Profiles in extruded metal (1) according to claim 1, characterized by the fact of having the base of a greater thickness with various vertical holes (9) that serve for the passage of the hooked teeth (11) of the profile for the joining of the slats (10), teeth that become blocked inside the slat (1) by a steel rod (15) introduced into the hole (4). 3) Profiles in sheet metal (5) according to claim 1, characterized by the fact that they have in the base various holes (9) that serve for the passage of the hooked teeth(l l) of the profile (10) for the joining together of the slats (5) as well as a space in the lower part delimited by two flaps (6) for holding the metal rod (14) that has holes that correspond exactly to those (9) made in the base ofthe profile (5), for the passage of the mentioned hooked teeth (11), that remain blocked inside the same slat (5) by a steel rod (15) introduced into the hole (4).

4) Profiles (1-5) according to claim 1, characterized by the fact of having a steel tube (12) inside them containing for reinforcement another steel bar (13), a tube serving both for armouring ofthe profiles (1-5) and for the connection of them to the lateral guides (20) by means of pins (16) screwed in the joints (17) inserted in the two ends of the tube (fig.8 no.16- 17) and fixed there by punching the tube itself above their notches (19).

5) Profiles in sheet metal (10) for joining the slats (1-5) according to claim 1, characterized by the fact that they have along the whole length of the lower part a hooked curve (11) for the housing ofthe profile in the special opening (3) of the slats (1-5), as well as some teeth that are also hooked, on the upper part (11) for the passage of the holes (9) of the profiles (1-5) and for the hooking on of the holding shaft (15) (fig.n°.8).

6) Profiles in sheet metal (1-5) according to claim 1, characterized by the fact that each slat (1-5) has in the ends, a metal plug with a crown (7) to block inside the same slats the varoius armouring components and those for hooking by means of the screwing in of the pins (16), that also determine the allignment of all the profiles (1-5-10) ofthe rolling shutter.

7) Mechanical device (fig.10), first for opening and closing the bolts for blocking (39) contained in the lateral guides (20) and successively for rolling, unrolling and separating the profiles (1-5-10) of the rolling blinds, including a geared electric motor or manually operated gears, or both the systems can be used separately, characterized by the fact of having, as well as the common geared electric motor with magnet for inverting the run (26), two other supplementary autonomous magnets (27), for the actioning ofthe central armature (32) connected to bars (33) that, going forwards and backwards, determine the opening and the closing of the bolts (39) inserted in the lateral guides (20), while the other magnet serves for driving a lever (28) that, going forwards and backwards, acts on the rods (29) connected at the ends to two pins (31) inserted in the cover (22), pins that advancing insert themselves into the plate wheel of the pulleys (23), joining the rotary movement of the same to that of the central rolling tube (21), that while receeding frees the run ofthe pulleys (23).

8) Mechanical device according to claim 6, characterized by the fact of having a central rolling tube (21), in the ends of which closure covers are inserted (22) on which are applied, with or without bearings (25), pulleys (23) that have a plate wheel and a groove (40) for the winding ofthe steel cables (24). Covers that have a tube type (38) prominence in the centre for holding the armatures (32-41) and support ofthe entire mechanical device.

9) Mechanical device according to claim 6, characterized by the fact that the opening and the closing movement of the rolling shutter, takes place by means of the traction or the slackening by the pulleys (23) ofthe steel cables (24) connected to the pins with head (16) of the last slat (1-5) at the bottom, in contact with the window sill (fig.n°.l).

10) Mechanical device according to claim 6, characterized by the fact that the freeing of the pulleys (23) from the coupling of the central tube (21) by means of the releasing of the pins (31), enables the tube (21) to rotate in an independant manner pulling and rolling the first slat at the top (1-5) connected to it by hooks (37), causing one by one the succesive spacing ofthe slats.

The rolling stops automatically when the spacing reaches the last slat (1-5) at the bottom. The rotation of the tube (21) in the opposite direction turns to place the slats (1-5) one on top ofthe other. 11) Mechanical device according to claim 6, characterized by the fact of having a series of levers and attachments that allow for the application ofthe common gears and movement controls also for carrying out the following functions by hand: a) opening and closing of the bolts (39) inside the guides (20) by means of rods (33) that can be worked autonomously; b) rotation of the central tube (21) by means of the cog wheel (36) fixed to the support (38); c) coupling or separating of the rotating movements of the central winding tube (21) of the side pulleys (23) by means of the action on the bar (35) that engages and releases the pins (31).