Modular frame for painting canvases

Abstract

The present invention relates to a modular frame for painting canvases, comprising a plurality of identical or different modular parts (2) that can be easily attached and detached from one another, using connection means (3) provided at their ends, to achieve the construction and disassembly of a rim, with or without reinforcement cross-members, which forms a frame (1) with different formats and / or dimensions, depending on the type, number and / or position of the parts (2) used. The modular parts (2) are straight linear (2.1) and / or curved (2.2) segments or L-shaped (2.3), T-shaped (2.4), cross-shaped (2.5) or arch-shaped (2.6) intersection parts (2'). In order to secure the edges of the canvas (4) to the rim, the invention provides main fastening parts (6), having a U-shaped cross section, for fastening by pressure clipping to the rear portion of said modular parts (2) and, optionally, also additional fastening parts (60) for securing the canvas to the intersection parts (2').

Description

[0001] DESCRIPTION

[0002] MODULAR FRAME FOR PAINTING CANVASES

[0003] OBJECT OF THE INVENTION

[0004] The invention, as stated in the present descriptive report, refers to a modular frame for painting canvases, providing, to the function for which it is intended, advantages and characteristics, which are described in detail below, which represent an improvement over the current state of the art.

[0005] The object of the present invention is a canvas frame for painting, that is, of the type intended to constitute the support structure that shapes and keeps taut the canvas used for painting pictures. This frame has the advantageous feature of being made up of a series of modular pieces that are easily assembled, allowing the user to construct it in different formats as desired, simply by varying the number and / or position of these pieces. Furthermore, the modular pieces are easily disassembled, facilitating the removal of the canvas, which can be a significant advantage in the storage and transport of the paintings. Moreover, in a preferred, though not limiting, embodiment, the modular pieces that make up the frame are made of recycled material, preferably recycled plastic, thereby providing an environmental benefit.Likewise, in other embodiments, the frame also includes fixing pieces in the form of pressure clips and other elements to fix the canvas to it without staples, to remove it easily and to hang the whole.

[0006] FIELD OF APPLICATION OF THE INVENTION

[0007] The field of application of the present invention falls within the sector of the artistic painting industry, focusing particularly on the field of picture frames.

[0008] BACKGROUND OF THE INVENTION As is well known, one of the most commonly used supports for painting pictures is a canvas stretched over a frame, usually rectangular or square, which keeps it taut. Until now, this frame has typically been made from four wooden strips joined at their ends to form the corners.

[0009] Frames are currently sold in a wide variety of shapes (rectangular, square, oval, round, etc.) and sizes, and you can even order a custom-made frame.

[0010] The problem is that the larger the frames, the more expensive they are, reaching very high prices. Custom-made frames are also very expensive compared to standard-sized frames.

[0011] The main objective of the present invention is to create different sizes of modules that fit together, in order to make a frame of the desired size, such as a custom-made or large-format frame, at a more economical cost.

[0012] Furthermore, another problem with current frames is that, once the frame is assembled and the canvas is attached, although the latter can be removed from the frame to pack it rolled up and transport or store it well protected, for example, by gallery owners to exhibit and then sell the paintings, the frame cannot be disassembled into small pieces that can be easily stored or transported.

[0013] While modern frames can be disassembled, transporting large-format frames remains complicated and consequently expensive because the slats that make up the frame are not detachable and, in some cases, are very long. For example, a slat in a large, solid wood frame can be 180 centimeters long and quite heavy.

[0014] Thus, due to both the weight and size of the package, shipping the frame is very expensive, and often it is not shipped at all; instead, a new frame is commissioned at the destination, doubling the natural resources needed for each exhibition of the artwork. The present invention proposes a frame that can be disassembled into smaller modules, thereby facilitating both domestic and international shipping by reducing international transaction costs for galleries, collectors, and artists.

[0015] One of the essential objectives of the present invention is, therefore, to provide the market with an improved type of frame that avoids both problems, being much more versatile for artists when choosing the shape and sizes of their paintings and also much more practical and cheaper for their storage and transport, especially considering that currently commercial globalization means that products may have to travel great distances and the volumes of the packages are a decisive factor when determining their costs.

[0016] In turn, there is also the problem of fixing the canvas to the frame that defines the stretcher frame, for which, until now, staples incorporated on the back of the stretcher frame are usually used, so that they lock the canvas and are nailed into the material of the stretcher frame, which is normally made of wood.

[0017] This requires the use of a stapling tool that allows the staple points to be driven through the fabric and the frame material with enough force so that they do not come out of place when the fabric is tightened on the opposite side.

[0018] Another drawback is that the frame material deteriorates when staples are hammered in, especially if it is reused and staples are hammered in over points where others have previously been hammered in.

[0019] However, the biggest drawback is the difficulty in removing the staples when you want to remove the canvas from the frame, for example for transport or storage.

[0020] Furthermore, when the frame is made of other materials, as is the case in the present invention, using staples to attach the canvas is not a suitable option, since it can damage it. Therefore, a secondary objective of the present invention is a frame comprising canvas-holding means suitable for attaching it under pressure, without the need for staples.

[0021] Furthermore, and with reference to the current state of the art, it should be noted that, at least as far as the applicant is concerned, there is no knowledge of any other modular frame for painting canvases, nor any other invention of similar application, that presents technical and structural characteristics equal or similar to those claimed herein.

[0022] EXPLANATION OF THE INVENTION

[0023] The modular frame for painting canvases proposed by the invention is configured as an optimal solution to the objectives indicated above, which, at the same time, represents an improvement over the current state of the art, with the characterizing details that make it possible and that distinguish it being conveniently included in the final claims that accompany this description.

[0024] Specifically, what the invention proposes, as previously mentioned, is a canvas frame for painting, intended to constitute the support structure that shapes and keeps taut the fabric of the canvases used for painting pictures, which is distinguished essentially by the fact that it is made up of a series of modular pieces structurally designed so that they are easily coupled together, preferably without the need for the use of glues, tools or anchoring elements for this purpose, and in such a way that, from the different types of pieces it comprises, straight, angled or even curved, it allows the construction of the frame in different formats, as desired, depending on the type, number and / or position of the pieces used in each case.

[0025] Furthermore, according to another feature of the invention, the aforementioned coupling of the modular pieces is also easily detachable, allowing the disassembly of the canvas and the frame to occupy minimal storage and transport space when required, for example, once the work is finished.

[0026] Furthermore, in a preferred, though not limiting, embodiment, the modular parts forming the frame are made of recycled material, preferably recycled plastic, thereby providing an environmental benefit.

[0027] In any case, the modular parts of the frame preferably comprise at least linear sections, which can be straight and curved, to define the sides of the frame and, where appropriate, the intermediate reinforcement crossbars, which can be horizontal and / or vertical, depending on the dimensions of the frame.

[0028] Optionally, the ends of said linear sections comprise complementary coupling means to join them together in a detachable manner.

[0029] However, in a preferred embodiment, the modular pieces also include joining pieces, which, provided in turn with coupling means, can be L-shaped, T-shaped, +-shaped or curved, serving to connect two, three or four linear sections together and form, respectively, the corners, the intersection points between the sides and the reinforcing crossbars or the union between two reinforcing crossbars.

[0030] In any case, these modular pieces can be the same size or they can be of different sizes, being in any case marketed in the form of a kit to make your own custom frame.

[0031] In addition, the frame optionally includes extension segments, intended to extend the dimensions of the frame, which, in a preferred embodiment, are incorporated internally into the inner cavity of the modular pieces, so that two, three or more modular pieces can be added to extend the dimension of the frame.

[0032] Additionally, the frame can also be extended in size by folding down two hinged frames, in which case it can be stored assembled, occupying half the volume.

[0033] For its part, the coupling system between the modular pieces is, preferably, a system of tongue and groove fittings with variable shapes that are provided in complementary designs at the respective ends of each piece, so that all the pieces can fit together at one of their ends and can do so simply by pressure and / or by including locking pins or dowels that are inserted into holes made for this purpose, in any case in such a way that, once the coupling is made, nothing protrudes from the perimeter of the surface of the pieces.

[0034] Furthermore, although it is not ruled out that with the described frame the use of staples can be used to fix the perimeter of the canvas to the back of the frame once mounted, in one embodiment, the frame comprises a series of pressure fixing pieces which, like clips, avoid the use of the aforementioned staples and, thus, also avoid the use of a stapling tool for nailing.

[0035] More specifically, as such clip-type pieces for fixing the canvas by pressure, the frame that is the subject of the invention comprises, at least, some main fastening pieces that have a U-shaped section configuration dimensioned, in each case, to fit snugly and press the back of the modular pieces that make up the frame, embracing the edge of the canvas between it and the piece itself so that it is conveniently attached to said frame.

[0036] In addition, the frame may optionally include additional fastening pieces designed to fix the sections of the canvas that coincide with the modular joining pieces that may comprise the frame's border.

[0037] Likewise, the frame also includes one or more hanging elements, in order to hang the picture, which are made up of pieces that are also designed to be inserted simply by pressure into a hole made for this purpose on the back of the modular pieces, and can also be fixed to them through the canvas fixing pieces.

[0038] In any case, it is important to note that all the pieces in the set are designed and sized in each instance based on the shape and dimensions of the modular pieces that make up the frame for which they are intended. For example, the main fastening pieces have a configuration and dimensions adapted to the configuration and dimensions of the frame slats in each case, particularly their cross-section, since this can vary in shape and size. While normally quadrangular, it can be more or less square and may have a raised edge. The same applies to the modular joining pieces, which can be L-shaped, T-shaped, or in the form of an arc segment.

[0039] In any case, the main support pieces of the canvas, which in a basic version have a II configuration, in some implementation options have protrusions, on the inside and / or at the ends of one or both of the branches of said II, which fit into grooves made complementarily in the modular pieces that make up the frame of the frame.

[0040] For their part, the additional fastening pieces, in a preferred embodiment, have a protrusion and a perforated tongue with a window that fit, respectively, into a groove and a recess with an internal protrusion provided complementarily in the modular confluence pieces.

[0041] In turn, the pieces that make up the hanging elements, in a preferred embodiment, have a cylindrical configuration with a truncated conical end with a retention step and expansion cut, suitable for penetrating and locking into a perforation of the modular piece of the frame, and a ring at the opposite end for inserting the nail or hook for hanging.

[0042] In addition, optionally, both the main and additional fastening pieces, besides the described protrusions or bumps, can also include one or more points that emerge from any of their inner walls, to promote a better fixation of the canvas fabric, as they are intended to pierce through said fabric and be nailed to the frame.

[0043] In one embodiment, the main and additional fastening pieces can be attached to the battens or connecting pieces associated with a second anchoring element equipped with a tab to facilitate removal of the assembly for canvas dismantling. This anchoring element can optionally be integrally integrated with the fastening piece itself. The tab of this second anchoring element preferably has a perforation at its distal end for inserting a hook. This hook, provided as an optional component of the frame, facilitates gripping the anchoring element for removing the additional fastening piece from inside the connecting pieces when canvas dismantling.

[0044] It should be noted that said hook, preferably, is made up of an elongated piece which, like a rod, has a hook-shaped termination at one end, while at the opposite end it has a straight shape designed and dimensioned to facilitate, in turn, the extraction of the locking bolts or dowels which, inserted in holes, the frame may include as an added element to the coupling means that serve to fix the linear modular pieces to each other or to those of confluence.

[0045] Furthermore, preferably, both the canvas fastening pieces and those that make up the hanging elements are made of the same material as the rest of the modular pieces of the frame.

[0046] In any case, preferably, the pieces that define the perimeter frame of the frame, that is, both the pieces that make up the linear sections, whether straight or curved, as well as, where applicable, the pieces that converge in L or T or in the form of an arc segment, have a cross-section whose profile defines a raised relief on the outer edge with a drop towards the center, which means that the canvas only comes into contact with the frame through its outer end.

[0047] Additionally, the frame also includes wedges that, intended for insertion into grooves made in the corners of the frame, on the back of the canvas, allow the fabric to be tightened, these wedges also being made of pieces of the same material as the rest, that is, preferably recycled plastic material.

[0048] With all this, the frame of the invention is configured as a strong support system that, together with the hardness and rigidity of the material, provides the necessary strength and firmness to fulfill its function of tensioning the fabric, being superior in the case of the plastic material to the traditionally used wood. Furthermore, the plastic version of the frame does not expand or contract with changes in temperature and humidity, nor does it warp over time.

[0049] Furthermore, it also offers an environmental benefit, since plastic waste is a highly polluting element that exists in abundance, and new ways of processing excess plastic waste are needed.

[0050] In any case, the frame that is the subject of the present invention represents an innovative solution, since, in addition to the recycled material with which it is preferably made, the canvas can be built to the desired size and shape, with the modular pieces, adding as many as desired to achieve the final size.

[0051] The modular frame described here is an invention that provides new, sustainable alternatives for the art materials market. It allows for the replacement of current frames made of solid wood, which are difficult to manufacture or obtain in large or custom sizes, with modular and reusable frames made from innovative materials such as recycled plastic. Furthermore, the modular frame of this invention reduces the cost of acquiring, storing, and shipping frames compared to current frames made of solid wood.

[0052] DESCRIPTION OF THE DRAWINGS

[0053] To complement the description being made and in order to help a better understanding of the characteristics of the invention, a drawing is attached to this descriptive document as an integral part thereof, in which the following has been represented for illustrative and non-limiting purposes:

[0054] Figures 1-A and 1-B show schematic elevation views of an example of the modular frame of the invention, represented respectively in the phase of being assembled and once assembled, specifically an example with a rectangular frame comprising pieces in the form of linear sections and joining pieces, showing the configuration and arrangement thereof; Figures 2-A and 2-B show schematic elevation views of the modular frame of the invention shown in the preceding figures, also represented in the phase of assembly and already assembled, in this case in another example of the same with a different shape of frame, specifically a square shape, as it has a different number of modular pieces; Figures 3-A and 3-B.Figures 4-A and 4-B show elevation views, in the assembly and mounted phases, of another example of the frame of the invention, in this case an example with a circular frame that only comprises curved section pieces directly coupled together; Figure 4-A and 4-B show elevation views, in the assembly and mounted phases, of another circular example of the frame of the invention similar to that shown in Figures 3-A and 3-B, in this case formed by curved section pieces joined together by means of confluence pieces; Figure 5 shows an elevation view of another example of the modular frame of the invention, in this case an example in the form of a midpoint arch, which combines straight and curved linear section pieces coupled together directly, without confluence pieces; Figure 6 shows an elevation view of another example of the modular frame of the invention, in this case an example in the form of a midpoint arch, which combines straight and curved linear section pieces coupled together directly, without confluence pieces.- Figures 7, 8 and 9 show a schematic perspective view of an example of the set of different modular pieces that the frame of the invention may comprise, showing their configuration; Figure 10 shows schematic views of three possible examples of the coupling system that the frame pieces have at their ends; Figure 11 shows a cross-sectional view of an example of the frame pieces with a profile having a raised relief on the outer edge; Figure 12 shows a perspective view of an example of an L-shaped joining piece and the respective ends of linear section pieces with a raised profile according to the example shown in Figure 10, having in this case dowels or bolts added to the joining means by means of tongue and groove fitting.- Figure 13 shows a perspective view of the end of two other modular pieces of linear section comprising the frame, in this case of curved section, whose ends directly include the joining means by means of tongue and groove fitting; Figure 14 shows a section view of a modular piece as shown in Figure 10, with a profile section provided with relief, represented with the canvas fixed to it by means of a conventional staple nailed to it; Figure 15 shows a section view similar to Figure 13, of a modular piece, represented with the canvas fixed to it by means of one of the main fixing pieces of snap-fit ​​clip type comprising the frame, showing the way in which it presses the canvas against the inside of said modular piece.- Figures 16 and 17 show a schematic perspective view of a basic example of one of the main clip-type fastening pieces comprising the frame for fixing the canvas, represented independently, showing its configuration and parts; Figures 16 and 17 show two cross-sectional views of different examples of the modular pieces that define the frame with the canvas fixed by means of the main fastening piece, as shown in Figure 15, showing how it is placed, having been shown pressed against the inner side of the modular piece in Figure 2 and against the back side of the modular piece in Figure 3; Figures 18 to 26.- They show sectional views of various examples of the implementation of the modular pieces that define the frame and various examples of the main fastening pieces of the canvas comprising the frame of the invention, in this case provided with internal projections that fit into grooves made complementarily in the modular pieces, showing different implementation options for the same; figure number 27.- Shows a schematic perspective view of a rear portion of the frame with an example of the main fastening pieces incorporated into the modular pieces that define the frame of the same, specifically an example of long fastening pieces that cover a whole section of the frame, having been represented without including the canvas itself to facilitate the observation of the arrangement of the pieces; figures number 28 and 29.- They show two other schematic perspective views of a rear portion of the frame with two other examples of the main fastening pieces, specifically an example with medium segmented pieces in figure 28 and another example with small segmented pieces in figure 29, showing their arrangement in the modular pieces that define the frame, also without the canvas included; figure number 30.- Shows a schematic side elevation view of an example of an additional fastening piece that optionally comprises the modular frame to fix the canvas in the modular joining pieces that the frame may have to define the perimeter frame; figure number 31.Figure 31 shows a perspective view of the additional fastening piece shown in the previous figure, along with an example of the T-shaped modular joining piece, showing its configuration as well as the complementary gaps and slots provided in said joining piece, having been represented without being coupled; Figure 32 shows a perspective view of the additional fastening piece shown in the previous figures once coupled to the joining piece, according to the example shown in Figure 17, having been represented without including the canvas; Figure 33 shows a sectional view of the additional fastening piece coupled to the joining piece, according to the example shown in Figures 30 to 32, in this case including the canvas, showing its fixation between both pieces; Figure 34 shows a sectional view of the additional fastening piece coupled to the joining piece, according to the example shown in Figures 30 to 32, in this case including the canvas, showing its fixation between both pieces.Figure 35 shows a perspective view of another example of an L-shaped modular joining piece with two additional fastening pieces for fixing the canvas, shown unattached, so that the complementary gaps and slots provided in said joining piece are visible; Figure 36 shows a side perspective view of an example of the hanging element comprising the modular frame of the invention, shown independently, showing its configuration and parts; Figures 36 and 37 show perspective and section views respectively of another example of an additional fixing piece attached to a T-shaped joining piece, according to the invention, in this case including the hanging element shown in Figure 35 inserted into a hole in the fixing piece, shown unattached in Figure 36 and attached in Figure 37; Figure 38 shows the hanging element attached.Figure 39 shows a perspective view of another example of fixing the hanging element, in this case inserted directly into a hole in the joining piece. Figure 39 shows a section view, similar to that shown in Figure 33, of another example of an additional fastening piece attached to a joining piece, including the canvas. In this case, the fastening piece is equipped with nail points and shows its fixing with a second anchoring element with an extraction tongue, again showing the option of fixing the hanging element inserted directly into the joining piece. Figures 40 and 41 show section views of two other examples of the additional fastening piece with different nail point configuration options and with the second anchoring element with an extraction tongue, in this case forming a solid part of the fastening piece itself. Figure 42 shows a section view of the additional fastening piece with different nail point configuration options and with the second anchoring element with an extraction tongue, in this case forming a solid part of the fastening piece itself.Figure 43 shows a schematic perspective view of an example of the hook comprising the modular frame of the invention for pulling the extraction tab of the second anchoring element shown in Figures 39 to 41, showing its configuration and parts; Figure 43 shows a schematic sectional view similar to that shown in Figure 41, in this case with the additional fastening piece represented in the extraction phase by means of the hook, showing how to use it; Figure 44 shows a perspective view of an example of the frame once assembled, including the canvas fastening pieces, hanging elements and hooks; Figures 45 and 46 show, respectively, a perspective view of an example of an extension segment that the frame optionally has, and a perspective view of a short length linear modular piece; Figures 47 and 48.- They show two perspective views, front and rear respectively, of an example of a modular joining piece with the hinge that allows mounting a double folding frame; figure number 49.- Shows a perspective view of the hinge axis shown in figures 47 and 48; and figure number 50.- Shows a perspective view of an example of the frame mounted with extension segments and with a double folding frame by means of hinges.

[0055] PREFERRED EMBODIMENT OF THE INVENTION

[0056] In view of the aforementioned figures, and in accordance with the numbering adopted, one can observe in them various non-limiting examples of the modular frame for painting canvases of the invention, which comprises what is described in detail below.

[0057] Thus, as shown in the figures, the frame (1) of the invention is formed from a plurality of modular pieces (2), identical or different, all of which are easily coupled and decoupled from one another by means of joining means (3) provided at their respective ends, preferably without the need for glues, tools, or anchoring devices, to achieve the construction and disassembly of the frame, with or without reinforcing crossbeams, forming the frame (1) in different formats and / or dimensions, as desired, depending on the type, number, and / or position of the pieces (2) used in each case. Preferably, the frame (1) comprises at least a plurality of modular pieces (2) of straight (2.1) or curved (2.2) linear sections provided at their ends with complementary joining means (3), such that, once assembled, they at least define the sides of the frame (1).

[0058] However, in a preferred embodiment of the invention, the frame comprises different types of modular parts (2) consisting of the following:

[0059] - straight (2.1) and curved (2.2) linear section pieces, to define the sides of the frame (1) and, where applicable, intermediate reinforcement crossbars, which can be horizontal and / or vertical, depending on the dimensions of said frame, and can be:

[0060] - all straight (2.1), for example, to form a rectangular or square frame enclosure (figures 1 and 2), or

[0061] - all curves (2.2), for example, to form a circular frame enclosure (figures 3 and 4), or

[0062] - a combination of straight sections (2.1) and curves (2.2), for example, to form a frame enclosure with straight and curved sections (Figure 5); and

[0063] - Confluence pieces (generically referenced as 2') to connect two or more linear section pieces together, which can be:

[0064] - L-shaped angle (2.3), for connecting two linear span pieces, for example, two straight pieces (2.1) and forming right-angled corners, for example, in a rectangular or square frame enclosure, and / or

[0065] - at a T-shaped angle (2.4), to connect three linear span pieces, for example, three straight linear pieces (2.1) at the points of intersection between the sides of the rectangular fence and the reinforcing crossbeams, and / or

[0066] - at a cross-shaped angle (2.5), for connecting up to four linear span pieces, for example, four straight pieces (2, 1) at the joint between two perpendicular reinforcing crossbeams, and / or

[0067] - in the form of an arc segment (2.6), to connect two curved linear span pieces (2.2), and form a circular fence (figure 4) or form a fence with other shapes that combine straight (2.1) and curved (2.2) linear span pieces.

[0068] Furthermore, the shape of the perimeter fence forming the frame (1) may include any combination of the modular pieces (2) described above, which, moreover, especially the straight linear section pieces (2.1) and curved pieces (2.2), may all be the same size or of different sizes for the same frame (1).

[0069] For their part, the easy joining means (3) provided at the ends of all the modular pieces (2) for coupling them, preferably, are tongue and groove fitting means, based on complementary recesses (3.1) and projections (3.2), with variable shapes, for example such as those shown in the examples of figures 7 to 9, or in figures 11 and 12, although without being limiting, since they can be of any other shape, and which, in any case, are provided at the respective ends of each piece (2) and which can be adjusted and fixed together simply by pressure and / or including drill bits (3.3) or locking bolts that are inserted into holes (3.4) made for this purpose.

[0070] In another embodiment of the invention, the easy joining means (3) comprise a screw that can preferably be tightened or loosened by means of an easy-to-use tool, such as an Allen wrench.

[0071] In any case, in one embodiment, as shown in Figures 10 to 14, the modular pieces (2) of the frame (1) that define its perimeter, i.e., the straight (2.1) or curved (2.2) linear sections and, where applicable, the L-shaped (2.3) and T-shaped (2.4) joining pieces (2'), have a cross-section whose profile, as shown in Figure 10, defines a raised relief (2.7) on its outer edge, sloping towards the center. This ensures that the canvas (4), once placed on the frame (1), only comes into contact with it through this raised relief (2.7), rather than with the entire upper surface of the frame (1). Furthermore, preferably, all the modular pieces (2) are hollow (2.8), which reduces material usage and thus lowers costs.

[0072] Furthermore, as shown in Figure 13, the canvas (4) can be attached to the modular pieces (2) that define the frame of the stretcher (1) using conventional staples (5) driven in from the back of the stretcher once it is assembled. However, in a preferred embodiment of the invention, the stretcher (1) itself includes, as an integral part of its assembly, pressure-fit fastening pieces (6) shaped like a II. These fastening pieces fit snugly like clips onto the inside of the modular pieces (2) once the stretcher frame (1) is assembled, securing the perimeter of the canvas (4) between these pieces and the stretcher. This eliminates the need for nailing tools.

[0073] More specifically, as can be seen in figures 14 to 43, in order to fix the edges of the canvas (4) to the frame defined by the modular pieces (2), the frame (1) comprises at least some main fastening pieces (6) of section II, which are dimensioned to fit snugly, by means of their pressure clipping, to the back of said modular pieces (2), embracing with them the edge of the canvas (4) so ​​that said edge is pressed and held by piece (6) to the back face (2b) of piece (2).

[0074] Depending on the configuration of the modular part section (2), the main fastening pieces (6) are dimensioned in their side arms (6.1) and central section (6.2) to fit respectively between the back face (2b), the inner face (2c), and the front face (2a) of the modular part (2), normally when it has a raised relief (2.7) on the outer edge of said front face (2a), as shown in the example in Figure 16. In other embodiments, said side arms (6.1) and central section (6.2) of the main fastening pieces (6) can be dimensioned to fit respectively between the outer face (2d), the back face (2b), and the inner face (2c), as shown in Figure 17. Furthermore, in both cases, the side arms (6.1) can be of equal or different lengths. And, in other embodiments, one of the side arms (6.1) can be inserted into a groove (2e) made for this purpose in the modular piece (2), as shown in the examples in figures 19 and 22.

[0075] Furthermore, the main fastening pieces (6) may also include one or two or more internal protrusions (6.3), i.e., longitudinal thickenings that extend into the interior of one or both of their lateral arms (6.1) or their central section (6.2). These protrusions, acting as claws, fit into corresponding grooves (2e) machined into the modular pieces (2) that define the frame (1). As shown in Figures 18 to 26, these internal protrusions (6.3) may have different configurations—square, wedge-shaped, rounded—and may be positioned closer or further from the ends of the lateral arms (6.1) of the main fastening piece (6). In each case, they are designed in accordance with the shape and position of the grooves (2e) of the modular piece (2).

[0076] Referring to Figure 27, it can be seen that, in one embodiment, the main fastening pieces (2) of the frame (1) of the invention, used to clip the canvas (4), are long segments, meaning they cover all or almost all of a linear section of the frame (1) or a large section of the frame, so that a single piece (6) secures a large part of the canvas (4) in that section. In other embodiments, as shown in Figures 28 and 29, the main fastening pieces (6) are medium or small segments, meaning they cover only a short portion of the frame (1), requiring multiple pieces (6) to secure the canvas (4) in each section of the frame.

[0077] Referring to figures 30 to 34, it can be seen how the frame (1) of the invention can also comprise additional fastening pieces (60) intended to fix the edge of the canvas (4) in areas of the frame (1) where the joining of the modular pieces (2) includes confluence pieces (2') either in the shape of a T, as shown in figures 31 and 32, or in the shape of an L, as shown in figure 34.

[0078] For this purpose, preferably, said additional fastening pieces (60) have, emerging perpendicularly from a flat base (60.1), a triangular protrusion (60.2) and a tongue (60.3) perforated with a window (60.4), which fit, respectively, into a groove (20) and a recess (21) provided with an internal protrusion (22), additionally provided in the joining piece (2'). Preferably, said recess (21) has a rectangular configuration.

[0079] Furthermore, as shown in Figure 34, when the joining piece (2') is L-shaped and intended for the corners of the frame (1), it is provided for the attachment of two additional fastening pieces (60) arranged perpendicularly, in line with each of the linear modular piece sections (2). This joining piece (2') includes two grooves (20) and two internal protrusions (22) arranged perpendicularly in a recess (21) as additional fastening means. Optionally, when the joining piece (2') is L-shaped and intended for the corners of the frame (1), given the greater accumulation of canvas fabric (4) to be secured at this point, an appendage with an additional cylindrical recess (2T) is provided, located at the intersection of the modular pieces (2) that define the respective frame sections. This appendix has been represented in figures 44 and 50.

[0080] In any case, both the main fastening pieces (6) and, where applicable, the additional fastening pieces (60), as can be seen by referring to figures 39 to 41, in addition to or alternatively to the internal projections (6.3) or protuberance (60.2), may include one or more nailing points (60.5) to favor a better fixation of the canvas (4), as they are intended to pass through it and be nailed into the modular piece (2) or confluence piece (2') of the frame (1).

[0081] Furthermore, in one embodiment, the main fastening pieces (6) and, where applicable, the additional fastening pieces (60) are fixed to the modular pieces (2) or to the confluence pieces (2') associated with a second anchoring element (9) which, as can be seen in figures 39 to 43, is provided with a tab (9,1) intended to be pulled and facilitate the removal of the assembly when it is desired to dismantle the canvas (4).

[0082] This second anchoring element (9), in one embodiment, is a separate piece from the main fastening piece (6) or, where applicable, the additional fastening piece (60), as shown in Figure 39. And, in another embodiment, it can form an integral part of the fastening piece (6, 60) itself, as shown in the example in Figures 40 and 41.

[0083] In any case, preferably, the tongue (9.1) of said second anchoring element (9) has, at its distal end, a perforation suitable for the insertion of a hook (10) provided for this purpose as an optional component of the frame (1) to facilitate the removal of the assembly formed by the second anchoring element (9) and the fastening piece (6 or 60), when dismantling the canvas (4). Referring to figures 42 and 43, it can be seen how, preferably, said hook (10) is an elongated piece, like a rod, which has a functional shape (10.1) at one end, in the form of a hook (figure 42) for pulling or in the form of a straight edge (figure 44) for prying, and a cylindrical point (10.2) at the opposite end, which, in turn, is specifically designed and dimensioned to facilitate the removal of the dowels (3.3) or locking pins that are inserted into the holes (3).4) made for this purpose in the modular (2) or confluence (2') pieces as means of joining (3), as can be seen in figure 11 or figures 31, 32 and 34.

[0084] In addition, preferably, the piece that makes up the hook (10) has a central bulge (10.3) to facilitate its handling.

[0085] Furthermore, referring to figures 35 to 38, it can be seen how the frame (1) that is the subject of the invention can also comprise one or more hanging elements (7) which, consisting of a piece with a ring (7.1) suitable for inserting a hook, is press-fitted into holes (8) made for this purpose, coinciding in the main fastening pieces (6) and in the modular pieces (2), or, where applicable, in the additional fastening pieces (60) and in the joining pieces (2'), so that the hanging clip (7) passes through both elements, as shown in figures 36 and 37. However, preferably, said hanging element (7) is inserted into a hole (8) provided directly in the modular pieces (2) or in the joining pieces (2) of the frame (1), as shown in figures 38, 39 and 40.

[0086] In any case, to achieve this fixation, preferably, the pieces that make up the hanging elements (7), as shown in figure 35, have a cylindrical configuration which, at the opposite end to the aforementioned ring (7.1) for inserting the nail or hook for hanging, has a truncated conical shape (7.2) provided with a retention step (7.3) and expansion cut (7.4), suitable to penetrate and lock into the corresponding hole (8), a hole which, moreover, can be circular or can have different configurations.

[0087] Referring to figure number 44, an example of the complete frame (1) can be seen, once assembled, including the canvas fastening pieces (6), hanging elements (7) that can be inserted into holes (8) and hooks (10) for the extraction of the additional fastening pieces incorporated in the hollow (21) of the confluence pieces (2').

[0088] Furthermore, as shown in Figure 45, an example of the extension segments (12) with which the frame (1) is optionally equipped can be seen. These segments extend the frame by lengthening the sections of the frame that define the linear modular pieces (2). These extension segments (12) are designed to be inserted into intermediate modular pieces (2") with a hollow interior (2.8), such that, as shown in Figure 50, they are completely concealed within them. Additionally, the extension segments (12) are provided with holes (8) to allow the insertion of the hanging element (7). The purpose of these extension segments (12) is to provide a way to customize the size of the frame (1), allowing one, two, three, or more centimeters of length to be added to the standard dimensions of the modular pieces (2) with which it is initially supplied.

[0089] As can be seen in Figure 50, between the straight modular pieces (2) of the size initially planned for the frame (1) and the confluence pieces (2') one or more intermediate modular pieces (2") of smaller size are incorporated, inside which the extension segments (12) are housed.

[0090] Furthermore, at least one of these intermediate modular pieces (2”), with a hollow interior (2,8), also has holes (8) that fit into the joining pieces (2') and the extension segments (12) with the holes (8) inserted inside. Its two holes (8) coincide: one with the drill bit (3,4) of the joining means (3) of the joining pieces (2') and the other with the last hole (8) of the extension segment (12). Thus, when the dowels or studs (3,3) are passed through, both parts are fitted and secured. In addition, several intermediate modular pieces (2”) may be added to cover the entire extension segment (12), all of them smaller but with the same profile shape, both inside and out.When a size of the extension is decided, for aesthetic and functional reasons, the appropriate intermediate modular pieces (2”) are added to each section to cover the corresponding extension segment (12) and to create a complete and solid frame (1).

[0091] And, referring to figures 47 and 48, it can be seen how, in one embodiment, some of the joining pieces (2') comprise hinges (13) that allow the frame (1) to be mounted with two hinged frames, as shown in figure 50. Figure 49 shows an example of the shaft (14) used in said hinges, preferably grooved at its ends, to improve its support.

[0092] Additionally, the frame (1) also includes the inclusion of wedges (11), shown in figures 27 to 29, to tension the canvas (4) once it is fixed with the described fastening pieces (6, 60).

[0093] Finally, it should be noted that, preferably, all the modular (2) and confluence (2') pieces comprising the frame (1), as well as, where applicable, the intermediate modular pieces (2”), the main fastening pieces (6) and additional fastening pieces (60), and the tensioning wedges (11), are made of recycled material, preferably recycled plastic, and can be of any color and even combine different colors among themselves for the same frame (1).

[0094] Having sufficiently described the nature of the present invention, as well as the manner of putting it into practice, it is not considered necessary to make its explanation more extensive so that any expert in the field can understand its scope and the advantages that derive from it.

Claims

CLAIMS 1 Modular frame for painting canvases, characterized by comprising a plurality of modular pieces (2), identical or different, which are all easily coupled and uncoupled from each other, by means of joining means (3) provided at their respective ends, to achieve the construction and disassembly of a frame, with or without reinforcing crossbars, forming a frame (1) with different formats and / or dimensions, as desired, depending on the type, number and / or position of the pieces (2) used in each case. 2.- Modular frame for painting canvases, according to claim 1, characterized in that, as modular pieces (2), it comprises straight linear section pieces (2.1). 3.- Modular frame for painting canvases, according to claim 1 or 2, characterized in that, as modular pieces (2), it comprises curved linear section pieces (2.2).

4. Modular frame for painting canvases, according to claim 2, characterized in that the linear section pieces comprising it are all straight (2.1) to form a rectangular or square frame.

5. Modular frame for painting canvases, according to claim 3, characterized in that the linear section pieces comprising it are all curved (2.2) to form a circular frame enclosure.

6. Modular frame for painting canvases, according to claims 2 and 3, characterized in that it comprises a combination of straight (2.1) and curved (2.2) linear section pieces, to form a frame with straight and curved sections. 7.- Modular frame for painting canvases, according to any of claims 1 to 6, characterized in that it further comprises confluence pieces (2') to connect two or more linear section pieces to each other.

8. Modular frame for painting canvases, according to claim 7, characterized in that It comprises L-shaped angled confluence pieces (2.3) for connecting two straight linear span pieces (2.1) and forming right-angle corners.

9. Modular frame for painting canvases, according to claim 7 or 8, characterized in that it comprises T-shaped angled confluence pieces (2.4), to connect three straight linear section pieces (2.1) at intersection points between the sides of the frame and the reinforcing crossbars.

10. Modular frame for painting canvases, according to any of claims 7 to 9, characterized in that it comprises cross-shaped angled confluence pieces (2.5), for connecting four straight linear section pieces (2, 1) at the junction between two perpendicular reinforcing crossbars. 11.- Modular frame for painting canvases, according to any of claims 7 to 10, characterized in that it comprises confluence pieces in the form of an arc segment (2.6), to connect two curved linear section pieces (2.2), and form a circular frame or a frame of other shapes that combine straight (2.1) and curved (2.2) linear section pieces. 12.- Modular frame for painting canvases, according to any of the preceding claims, characterized in that all the modular pieces (2) are of the same size. 13.- Modular frame for painting canvases, according to any of the previous claims, characterized in that the joining means (3) provided at the ends of the modular pieces (2) for coupling them are tongue and groove fitting means, based on complementary recesses (3.1) and projections (3.2). 14.- Modular frame for painting canvases, according to claim 12, characterized in that the joining means (3) are adjusted and fixed together by pressure. 15.- Modular frame for painting canvases, according to claim 13 or 14, characterized in that the joining means (3) include wicks (3.3) or locking bolts. 16.- Modular frame for painting canvases, according to any of the claims previous, characterized in that the modular pieces (2) that define the perimeter fence, that is, the pieces of straight linear sections (2.1) or curves (2.2) and, where applicable, the pieces of confluence in L (2.3) and in T (2.4), have a cross section whose profile defines a raised relief (2.7) on the outer edge of the same with a drop towards the center, so that the canvas (4), once placed on the frame (1), is only in contact with it through said raised relief (2.7). 17.- Modular frame for painting canvases, according to any of the preceding claims, characterized in that all the modular pieces (2) are internally hollow (2.8). 18.- Modular frame for painting canvases, according to any of the preceding claims, characterized in that, to fix the edges of the canvas (4) to the frame defined by the modular pieces (2), it comprises main fastening pieces (6) of U-section dimensioned to fit snugly, by means of their pressure clipping, to the back of said modular pieces (2).

19. Modular frame for painting canvases, according to claim 18, characterized in that the main fastening pieces (6) are dimensioned in their lateral branches (6.1) and central section (6.2) to be coupled, respectively, between the rear face (2b), the inner face (2c) and the front face (2a) of the modular piece (2), or between the outer face (2d), the rear face (2b) and the inner face (2c); and in that both lateral branches (6.1) are equal or of different lengths. 20.- Modular frame for painting canvases, according to any of claims 18 or 19, characterized in that the main fastening pieces (6) comprise one or two or more internal protrusions (6.3) which, like claws, fit into grooves (2e) made complementarily in the modular pieces (2).

21. Modular frame for painting canvases, according to any of claims 18 to 20, characterized in that the main fastening pieces (6) are long segments, the length of which covers all or almost all of a linear section of the frame (1).

22. Modular frame for painting canvases, according to any of claims 18 to 20, characterized in that the main fastening pieces (6) are medium or small segments, whose length covers only a short portion of a section of the frame (1). 23.- Modular frame for painting canvases, according to any of claims 18 to 22, characterized in that it also comprises additional fastening pieces (60) for fixing the edge of the canvas (4) in areas of the frame (1) that include confluence pieces (2') either T-shaped or L-shaped.

24. Modular frame for painting canvases, according to claim 23, characterized in that said additional fastening pieces (60) have, emerging perpendicularly from a flat base (60.1), a triangular protrusion (60.2) and a tongue (60.3) perforated with a window (60.4), which fit, respectively, into a groove (20) and into a recess (21) provided with an inner protrusion (22), provided additionally in the confluence piece (2').

25. Modular frame for painting canvases, according to any of claims 18 to 24, characterized in that the main fastening pieces (6) and, where applicable, the additional fastening pieces (60) include one or more nailing points (60.5) to facilitate better fixation of the canvas (4).

26. Modular frame for painting canvases, according to any of claims 18 to 25, characterized in that the main fastening pieces (6) and, where applicable, the additional fastening pieces (60) are fixed to the modular pieces (2) or to the confluence pieces (2') associated with a second anchoring element (9) provided with a tab (9,1) intended to pull it and facilitate the extraction of the assembly. 27.- Modular frame for painting canvases, according to claim 26, characterized in that said second anchoring element (9) forms an integral part of the fastening piece itself (6, 60).

28. Modular frame for painting canvases, according to any of claims 26 or 27, characterized in that the second anchoring element (9) has, at its distal end, a perforation suitable for the insertion of a hook (10) provided for this purpose as a component of the frame (1) to remove the canvas (4). 29.- Modular frame for painting canvases, according to claims 15 and 28, characterized in that said hook (10) is an elongated piece, in the form of a rod, which has a functional shape (10.1) at one end for stretching or levering and a cylindrical point (10.2) at the opposite end, designed and dimensioned to facilitate the extraction of the wicks (3.3) comprising the joining means (3). 30.- Modular frame for painting canvases, according to any of the preceding claims, characterized in that it also comprises one or more hanging elements (7) which, formed by a piece with a ring (7.1) suitable for inserting a hook, is inserted under pressure into holes (8) made for this purpose in the modular pieces (2) or in the confluence pieces (2').

31. Modular frame for painting canvases, according to claim 30, characterized in that the pieces that make up the hanging elements (7) have a cylindrical configuration which, at the end opposite the ring (7.1), has a truncated conical shape (7.2) provided with a retention step (7.3) and expansion cut (7.4), suitable for penetrating and locking into the hole (8). 32.- Modular frame for painting canvases, according to any of claims 17 to 31, characterized in that it comprises extension segments (12), dimensioned to be inserted into intermediate modular pieces (2”) with a hollow interior (2,8) and extend the extension of the frame. 33.- Modular frame for painting canvases, according to any of claims 7 to 32, characterized in that some confluence pieces (2') comprise hinges (13) which, by means of an axle (14), allow the frame (1) to be mounted with two hinged frames. 34.- Modular frame for painting canvases, according to any of the claims above, characterized in that all the modular pieces (2) and, where applicable, the confluence modular pieces (2'), the intermediate modular pieces (2”), the main clamping pieces (6) or the additional clamping pieces (60) are made of recycled plastic.

Images