CZ113192A3 - Frame for carrying and stretching flexible foils - Google Patents

Abstract

Knockdown-elements framework for light signs, comprising a plurality of vertically arranged section bars (11) with quadrangular cross-section, one pair of edge section bars (1) with "L"-shaped cross-section, horizontally arranged in mutual opposite relation, a plurality of section bars with triangular cross-section (14), affixed, as pairs, on each vertical section bar (11), and with a continuous "U"-shaped seat (14a) at 45<o> relatively to the relevant vertical section bar, one pair of horizontally arranged section bars (17) with box-like cross-section, provided with a flange (17b) designed to support the sign, a quadrangular hollow designed to support the flexible sheet stretching device, a continuous, quadrangular seat (17a) at 45<o> opposite to the corresponding seat of said triangular section bars, and a groove-like seat (30) designed to slidingly support light reflective plates, a plurality of section bars (29) also provided with groove-like seats at 45<o> in order to slidingly support the other side of said plates, a plurality of section bars (16) with quadrangular cross-section arranged at 45<o> relatively to the vertical section bars inserted inside the seats provided in the triangular section bars and in the section bars with box-like cross-section, and plate-shaped covering elements (8) installed both above and under the structure. <IMAGE>

Description

BACKGROUND OF THE INVENTION The present invention relates to a frame of demountable parts of resilient material comprising modular parts carrying and extending light tags of resilient material of a large size suitable for display and over a distance, wherein the frame can be mounted on solid structures such as buildings, gasoline pumps and alike.

BACKGROUND OF THE INVENTION

Until now, structural labels have been used in the form of sheets of flexible material commonly mounted in a quadrangular box structure of considerable length and width and shallow depth, these labels being illuminated by fluorescent or other lamps located within the box structure near light-reflecting surfaces. In some cases, these sheets of resilient, translucent or partially translucent material are turned off in a quadrangular frame that is rotatably mounted on the upper edge of the container body by hinges or U-shaped hooks to facilitate access to the entire arrangement for necessary cleaning, lamp replacement and routine maintenance.

In other types of such structures, the carrier and stretcher of the labeled panes is provided with profile bars allowing the frame to be deflected and then stretched in the foil by winding onto small metal bars and then tensioning the profile bars within the box structure. In this case, it is not necessary to use a peripheral frame supporting the foil sheet.

In practice, these types of light tags, both those provided with a perimeter frame and those in which the flexible film is stretched on the opening frame, have a number of disadvantages, including low rigidity of the support and tension connectors of the support and tension profile bars, low tightness against the penetration of water and dust between the frame and the profile bars and the housing, and finally the difficulty of accessing the interior of the housing.

In the case that the structure consists of a frame and can be opened upwards, the so-called hook-and-socket joint system allowing the frame to rotate around the edge of the upper horizontal side of the box body needs a continuous, fairly long, open-up groove which is At the same time, there must be a sufficiently wide space between the groove and the hook to allow rotation of the frame supporting the elastic film and its tensioning means. Because of the need for a continuous, open-top groove, this type of hinge constitutes a means of collecting water and dust and permits the penetration of these substances into the housing.

In addition, placing some profile bars in front of the lamps causes unwanted shading of the label.

These deficiencies are overcome by Italian Patent Application No. 22059B / 89, filed on November 8, 1989 by the same Applicant, for a load-bearing and tensioning structure of a flexible film light signal, wherein a configurable frame structure is formed from openings with multiple illuminated metal profiles. rods way flap, in the cabinet interior. This embodiment exhibits great strength and is easily hinged into the box structure, while allowing the structure to open up to 180 °.

Another advantage of this solution is easy cleaning and maintenance.

Unfortunately, in practice, it has been shown that said openable structures are particularly disadvantageous in that their frame is heavy, and that when the size of the box body is to be changed, i.e. both in depth and in length and width. , the profile bars supporting the tensioning device must be replaced integrally.

Therefore, it is an object of the present invention to provide a frame for supporting and tensioning a flexible film forming a light tag which does not have the disadvantages of the above structures, has high rigidity, all structural elements within the support and covering frame are easily accessible, brightness without shadows.

The essence of the invention is quadrangular

The object of the present invention is to provide a frame for supporting and tensioning the flexible foils forming the light labels, consisting of metal profile rods and a device for tensioning the flexible foil by means of bolt-tensioned rods according to the invention, which consists of profile rods with cross-sectional height equal to label height that are arranged vertically and parallel to each other at a predetermined distance and aligned in vertical planes,

further comprising at least one pair of peripheral, substantially inverted L-shaped profile bars arranged horizontally and parallel to each other at opposite ends of equally spaced vertical rectangular profile bars so that they are in a mutually opposite mirror position, each of these vertical profile bars with a rectangular cross section are as long as the longitudinal sides of the label,

- further of triangular cross-sectional bars, detachably mounted in pairs to each vertical rectangular cross-sectional bar, equidistant from each other, to support a resilient film for positioning a tensioning surface with continuous extensions of its triangles inclined upwards and downwards, a mirror arrangement, wherein each triangular sectional bar is provided with a U-shaped curved arm with a longitudinal median axis inclined at 45 'to the respective vertical rectangular sectional bar to form a rectangular seat integral with the triangular sectional vertical bar,

- further comprising at least one pair of box bars with a length equal to the length of the L-shaped edge profile bars, each of the box-shaped bars being arranged parallel and in a plane at the top and bottom with the L-shaped profile bars, the box-shaped bar is provided with a continuous arm forming a label, a continuous groove of the device, a continuous straight upper groove for inserting the seal, a rectangular continuous groove inclined at 45 °, and continuous grooves inclined at 45 °, the possibility of overlapping each other,

- further of profile bars, also of rectangular cross-section, arranged with a 45 'inclination relative to vertical profile bars of rectangular cross-section and fixed at one end inside a U-shaped seat formed in a triangular cross-section; provided in a box-shaped sectional bar provided with an arm for supporting the flexible film,

- a plurality of profile rods provided with prismatic grooves inclined at an angle of 45 &apos;, the profile rods being arranged on vertical profile bars with a rectangular cross section in mutually opposite pairs,

- furthermore a plurality of light-reflecting plates mounted on one side in prismatic grooves at an angle of 45 ', of box-shaped sectional bars, and on the other side inside prismatic grooves formed in sectional bars, located above and below the flag-bearing structure, each of the metal cover elements being a metal cover foil coplanar with each other, rotatable about horizontal pins arranged on the upper and lower L-shaped section bars, and screws and the like, for fixed stable connection of L-shaped profile bars to opposite ends of vertical square bars with rectangular cross-section, for connecting vertical square bars with square cross-section to supporting walls, for connecting profile bars with triangular cross-section to vertical profile bars with a rectangular cross-section, cover metal elements to profile bars with a cross-section which support the label, and profile bars with a cross-section with a continuous arm to the individual vertical profile bars with a rectangular cross section.

More specifically, each inverted L-shaped cross sectional bar is provided on its upper side with at least one continuous rectangular groove, a substantially box-shaped cross-section with an open horizontal top, and provided with a continuous cylindrical extension for pivoting the rounded longitudinal edge of the cover element to into the interior of the structure, both from the lower and upper side after folding up one or both of the cover elements. The lower and upper horizontal covering elements of the supporting structure are formed by parts or sectors of constant length metal foils connected to each other by at least one cross piece, detachably fastened in a recess in the head of a box-shaped sectional bar carrying tensioning bars.

An advantage of the frame according to the invention, which consists of removable parts of resilient material, is that it is easily adaptable to different sizes of the resilient sheet of resilient material, while achieving high strength. All components are housed inside the support frame and are easily accessible and provide uniform clarity over the entire label surface, avoiding unwanted shading of the area. Another advantage of this solution of the supporting and tensioning structure of the light signal is at least a partial application of the modular arrangement, so that its use is also suitable for different dimensions of the support frames, which requires less profile bars and flexible foils. The entire structure is easy and quick to assemble, outside the intended location, ensuring in any case tightness to atmospheric influences.

BRIEF DESCRIPTION OF THE DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view of the frame for receiving and tensioning the light tags. Only the upper part of the storage device in the box structure is shown because the lower part of the device is exactly the same as the lower part. Giant. 2 is an enlarged cross-sectional view of one of the inverted L-shaped profiled bars for connection to opposite ends of mutually aligned vertical rectangular-shaped profiled bars arranged equidistant from each other and for securing the rear facing vertical wall in case no bearing walls will be used. Giant. 3 shows a cross-section, also on an enlarged scale, of one of the U-shaped sectional bars with different longitudinal seats or grooves for supporting the 45-sectional sectional bars of the 45-degree cross section and the bars for supporting and tensioning the flexible label foil. Giant. 4 shows a cross-section of a triangular cross-sectional profile bar for fastening the inclined profile bars inclined relative to the vertical profile bars. Giant. Fig. 5 shows a cross-section of a rectangular section bar used as a vertical support element for L section bars and also for a section bar inclined at an angle of 45 'to the vertical section bars; Fig. 7 shows a plan view of the frame of Fig. 1, without the upper hinged metal element, comprising a tensioning device of the inner free edges of the elastic film stretched at the corners such that two adjacent surfaces thereof form an angle of 90 ° to each other.

DETAILED DESCRIPTION OF THE INVENTION

Further characteristics defined in more detail in a possible embodiment of this and the advantages of the invention are the following example of one solution. Fig. 1 shows a support / tensioning structure of a flexible light signal according to the invention, consisting of a combination of different plate, extruded aluminum profile bars and the like, suitable for forming a carcass open at least on one of its visible sides on which the elastic is stretched foil, which forms its own light label.

The structure shown in FIG. 1 is attached to any suitable support means and consists of at least two continuous profile bars 1 of L-section, the length of which corresponds to the length of the light signal to be supported and which are arranged parallel to each other at opposite ends. that is, the upper end and the lower end of the profile bars 11 with a rectangular cross section equidistant from each other in vertical planes. The profile bars 1 (of which only the uppermost one is shown in FIG. 1) have (FIG. 2) a cross-section L, their vertical arm 1a having longitudinal guide grooves 2, 2a etc. is suitable for receiving thin metal plates 3 forming the vertical rear wall of the support structure. These metal plates 4 can be omitted when the carcass is anchored in a continuous supporting wall 4, such as a wall.

The upper horizontal arm 1b of the L-shaped profile bar is provided with two continuous grooves 5 and 5a of a rectangular cross-section, the upper side of which is partially open and has mutually opposed cylindrical extensions 6, 6a. of which the cylindrical extension 6 constitutes a means for resiliently gripping a thin metal plate or thin metal strip 7 (FIG. 1) for making a tight connection between the L-shaped profile bar 1 and the wall 4 (or other supporting element) and the cylindrical extension 6a forming a stationary a portion of a continuous hinge intended to rotatably support the upper or lower metal foil cover 8, which may thus be around the cylindrical extension 6a. as a hinge, folded up.

The same longitudinal profile rods 1 of cross-section L are provided on their arms with at least one groove seat 9 and 9a intended to accommodate a tubular or spherical seal. Furthermore, a groove seat 10 with a rectangular cross-section (FIG. 2) is provided in the vertical arm 1a of each profile bar 1 of cross-section L (FIG. 2), the function of which will be explained below.

Between the inner surfaces 1c and 1d of the profile bars 1 of cross-section L are vertically arranged and aligned at predetermined distances of the profile bar 11 with the rectangular cross-section shown in Fig. 5 and forming support means for further profile bars as will be explained in more detail in the following description. Each profile bar 11 with a rectangular cross-section is further provided at its opposite ends with a protruding element with a square head 12 at the end (FIG. 1) for insertion into a quadrangular groove seat 10 provided in the vertical arm 1a of the adjacent profile bar 1 of L.

Therefore, the various vertical profile bars 11 with a rectangular cross-section, together with the horizontal profile bars 1 of cross-section L, form a rigid structure or skeleton, to which a cover wall consisting of thin metal plates 2 can be attached. overlap, in opposing guide grooves 2, 2a. etc., wherein when the carcass is attached to the solid wall 4, thin metal plates 2 can be omitted. The vertical profile bars 11 with a rectangular cross-section are spaced at equal intervals along the length of the box body, one pair being detachably connected to the profile bars 13 with a rectangular cross-section whose cross-section and transverse dimensions coincide with the cross-section and transverse dimensions of the vertical profile bars 11 with rectangular cross section. The profile bars 13 are arranged diagonally with a 45 ° inclination to the vertical profile bars 11 with a rectangular cross section, one of them pointing upwards and the other pointing downwards.

FIG. 1 is a cross-sectional view of an arrangement wherein each profile bar 13 is positioned at a 45 ° inclination to a common profile bar 11 with a rectangular cross section and its length varies with the depth of the support structure and is removably attached to the profile bar 11 with a rectangular cross section with the possibility of being brought to the desired level by inserting one end thereof into a U-shaped seat 14a connected to the support recess of the profile bar 14 (FIGS. 1 and 4) with a triangular cross-section.

This triangular cross-sectional bar 14 is attached to the rectangular cross-sectional bar 11 by clamping screws 15 so that the U-shaped seat 14a adapted to receive the end of the cross-sectional bar 13 will also be inclined at 45 °.

The two profile bars 13 with an inclination of 45 ° and guided upwards and downwards on the same profile bar 11 with a rectangular cross section are fastened to the hypotenuse 14b by oblique screws 16, shown by their dashed axes in Fig. 1.

At the ends of the two sets of inclined profile bars 13 opposite the ends connected to the profile bars 14 with a triangular cross-section, a continuous profile bar 17 with a box cross section is connected, as shown in Figures 1 and 3, which is horizontal and crosswise to the individual inclined bars. The continuous profile bar 17 with a box cross section is as long as the longitudinal side of the luminous label formed by the flexible film 18. The continuous profile bars 17 with a box cross section form a support structure which supports the flexible foil 18 forming a flag in the vertical direction and parallel to the vertical rear wall formed from the vertical profile bars 11 with a rectangular cross section as shown in Fig. 1.

Each box section support rod 17 has a hollow section with two mutually opposing box edges to form a groove seat with a rectangular cross section for receiving the free end of the inclined profile bars 13, which are then fixed to the running edges 17a by transverse screws 19. The box-shaped section bar 17 has a continuous arm 17b terminated with an outwardly curved end 17c which allows suitable placement of the resilient foil 18 at the edge of this box-section bar section 17 which turns around the rounded end 17c of the continuous arm 17b. whereupon the curved edges of this flexible film 18 are locked in the continuous groove seat 20 by means of tension bars of a known type. Tensioning of the elastic film is accomplished in a known manner by wrapping opposite longitudinal edges of the elastic film 18 around the lower and upper bent rounded ends 17c and then winding these edges around the square bars 21, then sliding the square bars 21 in the continuous groove seat 20 and finally stretching the square bars. of the bars 21 by pushing them to the bottom of the continuous groove seat 20 by means of horizontal strips 22 attracted by screws 23 screwed into threaded holes

24. As shown in FIG. 3, using a hook-type tensioning device which is the subject of Italian patent application No. 22,

302 A / 89 filed by the same applicant on November 8, 1989.

Each continuous box bar with a cross-section has its upper part 17e flat and flush with the upper surface of the horizontal arms 1b of the profile bar 1 of cross-section L around which the upper and lower metal covering foils 8 are wound.

The same profile bar 17 with a box cross section is provided with an elongated arm 25 and a continuous groove 26 flush with the elongated arm 25, to accommodate longitudinal plates which are intended to join different parts (of predetermined length and equal width) forming metal covering Each covering metal foil 8 is attached to the upper plane of the profile bar 17 with a box cross section equally spaced by screws 27, as shown in FIG. 1.

Since each metal foil 8 is rotatably supported about a cylindrical extension 6a as a hinge, it is possible by removing the screws 27 from one or more of said metal foil components 8 to lift and tilt one or more parts, similar to a hatch, thereby allowing access to the interior of the cabinet from below and / or above for cleaning, lamp replacement or routine maintenance. Within this structure, close to and parallel to the upper and lower profile bars 13, a light reflecting wall 28 is formed comprising at least two light reflecting plates 28a. 28b. As shown in FIG. 1, which are mounted in a guide on one of their longitudinal sides in the profile bars 29, see FIG. 29b. inclined at an angle of 45 ', in which the sliding light-reflecting plates 28a are received. 28b.

which are displaced until they overlap one another in the longitudinal direction of the structure, and which are disposed on opposite longitudinal sides in prismatic grooves 30 formed in profiled bars 17 with a box cross section, see FIG. 1.

This solution allows, after lifting the cover metal foil 8, to shift the two light-reflecting plates 28a, 28b to each other so that they overlap each other, thereby allowing the operator to access from above or below the inside of the box structure. Inside the support structure there are reflective material 11 with a quadrangular wall 3. To these further arranged are plates 31 of light anchored to the vertical profile bars of cross section, located on the rear vertical vertical profile bars of 11 rectangular section are also fixed lamps 32.

In order to improve the aesthetic appearance of the flexible film 18, especially in the corners of the visible stretched side, a tensioning device is provided inside the box structure which tightens the flexible film 18 to compensate for any folds or wrinkles in the corners of the flexible film 18. a flexible film 18 about two adjacent sides inclined at 90 ° to each other on the visible sides of the label.

As shown in FIG. 7, the device further comprises two longitudinally adjustable draw bars 33 and 33a. attached to the vertical profile bars 11 with a rectangular cross section or to other fixed parts within the box structure. The adjustable tie rods 33 and 33a are provided with hook or circular gripping ends 34 connected to cables 35 which in turn are attached to the end pieces 36 and 36a within the structure after rotation and tension of the resilient film 18 around adjacent sides of the frame structure around the outwardly curved rounded ends 17c. of cross-sectional profile bars 17 carrying a tensioning mechanism.

The two curved and crumpled end portions 36 and 36a are tensioned by a spacer 37 positioned between two portions of the longitudinally adjustable drawbars 33 and 33a. the ends of which are retained in the sleeve of the spacer 37, provided at their opposite ends with two screw threads with opposite pitches. By swiveling the spacers 37, the tension of the individual inner arms can be compensated to completely turn off the outer elastic film 18 at all four corners of its visible side.

Consequently, the practical advantages of the application and the favorable financial impact of the present invention, which is constructed essentially of box-shaped section bars and diagonally inclined profile bars, make it possible to assemble these structures in various sizes with increasing or decreasing depth of construction. by guiding the profile bar 14 of triangular cross-section up or down, thereby simultaneously reducing the length of the profile bar 13. This support structure can be assembled easily anywhere and then transferred to the intended label location.

Claims (9)

PATENT N O R O Κ Y A frame for supporting and tensioning the flexible foils forming the light labels, consisting of metal profile bars and a device for tensioning the flexible foil by means of bolt-tensioned bars, characterized in that it consists of profile bars (11) with a rectangular cross section of height equal to the height of the labels, which are arranged vertically and parallel to each other at a predetermined distance and aligned in vertical planes, - further comprising at least one pair of peripheral, substantially inverted L-shaped profile bars (1) arranged horizontally and parallel to each other at opposite ends of equally spaced vertical rectangular profile bars (11), so that they are in a mutually opposite mirror position each of these vertical profile bars (11) with a rectangular cross section being as long as the longitudinal sides of the label, - further of triangular cross-sectional profile bars (14) detachably mounted in pairs to each vertical rectangular cross-sectional profile bar (11) equidistant from each other, with their triangles inclined upwards and downwards, to form a mutually opposite mirror arrangement, wherein each triangular cross-sectional bar (14) is provided with a curved U-shaped arm with a longitudinal center axis inclined at 45 'to the respective vertical profile bar (11) with a rectangular cross section to form a quadrangular seat (14a) integral with the vertical profile bar (14a) 14) with triangular cross-section, - further comprising at least one pair of box-shaped sectional bars (17) and a length equal to the length of the L-shaped sectional profile bars (1), each of the box-shaped bars (17) being arranged parallel and in a plane at the top and bottom; profile rods (1) with a cross-section L, each profile bar (17) with a box cross section being provided with o jr a continuous arm (17b) for supporting the elastic film (18) forming the label, a continuous groove (20) for positioning the tensioning device, a continuous flat top with a continuous groove (26) for inserting the seal, a quadrangular continuous groove inclined at 45, continuous grooves inclined at an angle of 45 ° to form a sliding fit of the light-reflecting panels (28a, 28b) with the possibility of overlapping each other, - further of profile bars (13), also of rectangular cross-section, arranged at a 45 ° inclination with respect to vertical profile bars (11) of rectangular cross-section and fixed at one end inside a U-shaped seat (14a) formed in a triangular profile bar (14) a cross-section, and the other end inside a 45-degree rectangular continuous groove provided in a box-shaped sectional bar (17) provided with an arm for supporting the flexible film (18), - a plurality of profile bars (29) provided with prismatic grooves (29a, 29b) inclined at 45 °, wherein the profile bars (29) are arranged on vertical profile bars (11) with a rectangular cross section in mutually opposite pairs, - further comprising a plurality of light-reflecting plates (28a, 28b) slidable on one side in a 45 ° sloping prismatic groove (30), a box-shaped profile bar (17), and on the other side inside the prismatic groove (29a), 29b) formed in the profile bars (29), - two metal cover elements located above and below the flag-bearing structure, each metal cover element being a metal cover foil (8) coplanar with each other, rotatable about horizontal pins arranged on the upper and lower profile bars (1) of L-section and bolts and the like, for rigidly stable connection of sectional bars (1) of L-section to opposite ends of vertical sectional bars (11) of quadrangular section, for connecting vertical sectional bars (11) of quadrangular section to supporting walls (4), for connecting triangular sectional bars (14) to vertical rectangular sectional bars (11), metal covering elements to the box-sectional profile bars (17) supporting the label, and profile bars (17) with cross-section with flow arm (17b) to individual vertical profile bars (11) with a rectangular cross section. Frame according to claim 1, characterized in that each horizontal sectional bar (1) with a cross-section L is provided on its upper side with at least one continuous groove (5) of a rectangular cross-section with an open horizontal top and provided with a continuous cylindrical extension (6). 6a) for pivoting a rounded longitudinal edge of the cover element, to allow access to the interior of the structure from the bottom or top side after folding out one or both of the cover elements. Frame according to claim 1, characterized in that the lower and upper horizontal covering elements of the supporting structure are formed by parts or sectors of constant-length metal foils connected to each other by at least one cross piece, detachably fastened in a recess in the head of the profile bar (17) with box cross section, carrying tension bars. Frame according to claim 1, characterized in that the cover plates (28a, 28b) of the light-reflecting material are sliding, with the possibility of overlapping one another, within the profile bars (29) in their parallel prismatic grooves (29a, 29b), detachably connected to the vertical profile bars (11) with a rectangular cross section, parallel to each other and equidistant from each other, to allow displacement along the vertical profile bars (11) with a rectangular cross section and parallel to the displacement of the profile bars (13), also with a rectangular cross section inclined at 45 °. Frame according to claim 1, characterized by (11) with quadrilateral rods (13), also with tensioning devices, in that the vertical profile rods have a cross-section and an inclined profile quadrangular cross-section carrying the same cross-section for use in both positions by simply shortening their length. Frame according to claim 1, characterized in that the panels (31) of light-reflecting material placed inside the structure and the lamp (32) illuminating the label are attached to the vertical profile bars (11) with a rectangular cross section. Frame according to claim 1, characterized in that it is provided with thin metal plates (3) sliding in parallel longitudinal guide grooves (2, 2a) at the ends of the vertical legs of the upper and lower profile rods (1) with a cross-section L, creating a rear vertical wall. Frame according to claim 1, characterized in that at its four corners on the inside it is provided with a resilient foil (18) stretched on the outer running edges of the horizontal profile bars (17) with a box section by means of a tensioning and compensating device composed of pairs of longitudinally adjustable rods (33, 33a) hooked to the rigid profile bars within the structure and to the edges of the stretched elastic film (18) at the corners of the structure inclined at 90 ° to each other to eliminate possible folds in the corners of the outer surface of the elastic film (18). Frame according to claim 1, characterized in that the profile bars from which the supporting structure is made are made of aluminum alloy by extrusion.