FR2906634A1 - Display frame for use as photo frame, has fixation elements i.e. grubscrews, having length equal to thicknesses of front and rear parts and screwed to provide threads held at ends of front and rear parts of thicknesses - Google Patents

Abstract

The frame (1) has front and rear parts (AV, AR) including holes, where one of the parts is partially transparent. The holes of the front part are associated to the holes of the rear part, where the associated holes are aligned when the front and rear parts are superimposed. Fixation elements i.e. grubscrews (9), penetrate the associated holes for integrating the front and rear parts. The fixation elements have length which is equal to thicknesses of the front and rear parts and are screwed to provide threads held at ends of the front and rear parts of the thicknesses. An independent claim is also included for an assembly station comprising a controlling unit.

Description

Display Field TECHNICAL FIELD OF THE INVENTION The invention relates to

  a display frame, its support, and the method of manufacturing said frame. A display frame receives and maintains one or more visuals in the display position interchangeably. Its function is to attract the attention of people and present them the visuals. It can be fixed, placed or suspended by means of a support. It can be limited to the presentation of the front face of the visual (use on one side only), or also allow the presentation of its back side (use on front / back).

  STATE OF THE PRIOR ART It is known from EP 1655704 a display frame consisting of several layers to be stacked and assembled, all of which can be qualitative and recto / verso. Many variants are presented. But the manufacture of frames according to one or the other of these variants is not easy. It involves a mounting station positioning the various components of the frame between them. It mainly involves a mounting station operating on the fasteners both on the front and back of the frame. Indeed, front side, the fastening element (rivet, bolt, clip) must be inserted. On the reverse side, the same fastening element must be locked (deformation of the rivet for the creation of a head, screwing of the nut of the bolt, insertion of the complementary part of the clip). In addition, the display frames presented in this document EP 1655704 do not allow simple associated supports. For a simple presentation on a counter, limited in addition to a single-sided use, they require an imposing and expensive support, as shown in Figure 9 of this document. SUMMARY OF THE INVENTION An object of the invention is to provide a display frame for solving at least one of the problems of the display frames of the prior art.

According to the invention, a display frame for receiving and holding at least one visual in the display position comprises: a front portion and a rear portion, at least one of said parts being at least partially transparent to leave visible at least a portion of the display, and a plurality of holes in the front and rear portions, at least one hole in the front portion being associated with a hole in the rear portion, said associated holes being substantially aligned when the front portion and the rear part are superimposed, - a plurality of fasteners, each fastener penetrating said associated holes 10 to secure the front portion and the rear portion, these fasteners are at least in part: - grub screws, - of length at least substantially equal to the stacking of the thicknesses of the front and rear portions, 15 - and screwed so as to present nets in sensib the front and rear ends of this stack of thicknesses. More specifically, the display frame may comprise: a transparent wall constituting the front part, pierced in its lower part and in its upper part, a transparent wall constituting the rear part, pierced in its lower part and in its part; upper, - a spacer further comprising the front or rear portion, comprising a pierced lower strip and a pierced upper strip.

The assembly is held by grub screws housed in the lower and upper holes, and whose threads are engaged in the thickness of the transparent front and rear walls. At least one grub screw may have a length greater than the stack of the thicknesses of the front and rear portions, so as to overflow this stack of thicknesses and to have a fastening means, by screwing on this flowing threaded length, a support.

More specifically, according to a first variant, the grub screws housed in the lower bores may have a length greater than the stacking of the thicknesses of the front and rear parts, and protrude from the rear part so as to be able to screw studs therein. . These pads constitute the support for an inclined display frame 5, the inclination of the frame depending on the length of the pads and the offset between the studs and the lower edge of the frame. According to a second variant, the grub screws housed in the lower bores may have a length greater than the stacking of the thicknesses of the front and rear portions 10, and may protrude from the front and rear parts so as to be able to screw on both sides. other studs. These pads constitute the support for a right display frame, the pads being substantially tangent to the lower edge of the frame. According to a third variant, the set screws housed in the upper bores 15 may have a length greater than the stack of the thicknesses of the front and rear parts, and overflow so as to be able to attach hooks. These hooks provide support for a suspended display frame. According to a fourth variant, screws without a head for fixing the front and rear parts, and / or other screws provided specifically for this purpose, may protrude from the rear part so as to be able to fix the hooks. These hooks can be the support for a standing display frame. Alternatively, according to a fifth variant, the transparent walls and / or the bottom strip may comprise at least one tab adapted to fit within a tube. This tube forms the support for a standing display frame. The tabs can support an insert to enhance the fit and hold of the frame within the tube.

The assembly station of the display frames according to the invention comprises means for controlling the depth of screwing of these grub screws, capable of passing right through the holes.

The means for controlling the screwing depth of the set screws may consist of sensors detecting the desired screwing positions of the set screws; the assembly station may further comprise a screwdriver whose power supply is slaved to these sensors, the detections of the desired screwing positions 5 cutting the power supply of the screwdriver. Consequently, the manufacture of frames according to the invention is easy. The manufacturing station is simple and inexpensive. Mounting times are reduced. However, the frames thus manufactured perform their function both recto alone and 10 recto / verso, qualitatively. Finally, the frames according to the invention allow associated supports of the simplest, which can easily be delivered separately, ready to be mounted. This, for all the most common configurations (straight or inclined frames, hanging, standing).

DESCRIPTION OF THE FIGURES The present invention is illustrated by non-limiting examples in the accompanying Figures, in which like references indicate like elements. FIGS. 1A to 7 illustrate a first embodiment of a display frame 20 according to different variants: FIG. 1A illustrates an exploded perspective view of a display frame and a part of its assembly station according to this first embodiment of the invention; Figure 1B is an enlarged view of a portion of Figure 1A; Figure 1C is a detail sectional view of the assembly station of Figure 1A; Figure ID is a perspective view of a variant of the assembly station; Figure 1E is a detail sectional view of the variant of the assembly station of Figure ID; Figure 2A shows a perspective view of the display frame of Figure 1A when assembled; Figure 2B is an enlarged view of a portion of Figure 2A; Figure 3A shows a perspective view of the display frame of Figure 2A provided with longer screws and pads, the assembly constituting a first variant of display frame according to the invention on inclined support; Figure 3B shows a side view of this first variant of the first embodiment of the invention; Figure 4A shows a perspective view of a second variant of a display frame according to the invention provided with pads on a straight support; Figure 4B shows a side view of this second variant of the first embodiment of the invention; Figure 5 shows a perspective view of a third variant of the first embodiment of the invention, relating to a frame and its support to be suspended, the support being in exploded view; Figure 6 illustrates a perspective view of a standing display frame, according to a fourth variant of the first embodiment of the invention, the support being in exploded view; Figure 7 illustrates an exploded perspective view of another standing display frame, according to a fifth variant of the first embodiment of the invention.

Figures 8A-9B illustrate a second embodiment of a display frame according to two variants: Figure 8A illustrates an exploded perspective view of a display frame according to this second embodiment of the invention; Figure 8B shows a perspective view of the display frame of Figure 8A when assembled; Figure 9A illustrates an exploded perspective view of an alternative display frame according to this second embodiment of the invention; Figure 9B shows a perspective view of the display frame of Figure 9A when assembled. DETAILED DESCRIPTION OF THE INVENTION Figure 1A shows an exploded perspective view of a display frame and its assembly station, according to a first embodiment of the invention. The display frame 1 comprises a transparent front wall 2 forming a front portion AV, and a rear transparent wall 4 forming a rear portion AR. The transparent walls before 2 and rear 4 are respectively provided with holes in their lower part 2A ', 4A' and in their upper part 2B ', 4B'.

According to this first embodiment of the invention, the display frame 1 also comprises a spacer 3. It consists of a lower strip 3A provided with holes 3A 'and an upper band 3B provided with holes. 3B. It is interposed between the transparent walls before 2 and rear 4. In this example of Figure 5 1A, the spacer 3 is included in the front part AV. Alternatively, it could be at the back AR. According to this first embodiment of the invention, the spacer 3 is intended to receive and hold in position a sheet (not shown), the sheet can be inserted or removed at will. The right or left open sides between these two strips 3A and 3B allow insertion or removal of the leaflets. Insertion or withdrawal of sheets are thus facilitated by these strips 3A and 3B, which is necessary for frequent leaflet changes, for example for advertising at the point of sale.

The front part AV and the rear part AR, that is to say the transparent walls 2, 4 and the spacer 3, are secured by fixing elements, intended for the lower bores 2A ', 3A', 4A '. and higher 2B ', 3B', 4B '. These fastening elements are set screws 9, better visible in Figure 1B enlarged. The set screws 9 are threaded over their entire length. They comprise a hollow footprint 9 'allowing the screwing through a complementary shape. In this example, the footprint 9 'is hexagonal, for a key or a hexagonal tip.

These screws 9 having no head, nothing can stop them. Under the action of their screwing, they can be inserted on one side in the bores of the components of the frame to emerge on the other side. Because grub screws are not assembly screws. These are pressure screws or blocking: they are designed to come into abutment and exert pressure against an element, under the action of their screwing. The assembly station of the display frame according to the invention makes it possible to use such screws for assembling its components.

First, the mounting station comprises means for positioning the components to be assembled. Indeed, the transparent front wall 2 is placed on a base 7. It is positioned 5 by means of rods 8 projecting from the base 7 and positioned in such a way that they correspond to the positions of the holes in the transparent wall 2. The rods 8 through these holes. The strips 3A and 3B are then placed on the front wall 2. The rods 8 pass through the bores of the strips 3A and 3B and position them with respect to this front wall 2. The rear transparent wall 4 is stacked identically to the wall transparent 2. The positioning means are constituted by the base 7 and the four rods 8 able to pass through the holes of the front and rear parts.

Secondly, as illustrated in FIG. 1C, the mounting station comprises means for pre-positioning the set screws 9 before they are screwed into the components of the frame. Indeed, a support plate 17 provided with four threads 18 allows the headless screws 9 to be perfectly positioned at the entrance of the bores of the frame components, and perfectly perpendicular to these holes. The threads 18 are adapted to the threads of the set screws 9. The support plate 17 is positioned relative to the base 7 by unrepresented columns, so that the threads 18 are in the axis of the rods 8 and therefore holes. In addition, the support plate 17 holds the frame components pressed against each other. The grub screws 9 can thus penetrate these holes, instead of the rods 8, the latter being retractable. More specifically, the rods 8 are sliding through the base 7. Each overflows under the action of a spring 5. And each retracts under the action of screwing a grub screw in the holes that 'she crosses.

The pre-positioning means of the set screws 9 prior to their screwing therefore consist of the support plate 17, the four threads 18, and the positioning columns of the support plate 17 relative to the base 7 (not shown) Third, and mainly, the mounting station comprises means for controlling the depth of screwing of these set screws 9, capable of passing right through the holes.

Indeed, for the particular example of a frame comprising four screws as shown in the figures, the mounting station comprises four sensors detecting the desired screwing position of each of the four screws to be screwed. Each sensor is made by means of a rod 8 and an adjustable stop 6. The rods 8 project from the base 7 under the action of the springs 5, for positioning transparent walls and 15 bands. When a screw is screwed into the associated holes of these elements, it advances and pushes the rod 8 which slides in the base 7 and retracts. The rod 8 thus moves until it comes into contact with the stop 6, set to represent the desired position of the screw. The contactor thus created can, for example, light a LED type diode (not shown in the figures), indicating the correct position of the screw. However, if the operator continues for a short time screwing, the grub screw will continue to advance within the holes. Indeed, the rod 8 will always bear against the stop 6, and the screw will advance relatively to the transparent walls and 25 bands that will peel off the base 7 and lift the support plate 17. At the extreme, the operator can inadvertently continue screwing until you have passed through the holes. In order to avoid these risks, the solution of blocking the support plate 17 is not satisfactory: the set screw 9 would turn on itself, deteriorating its connection to the components of the frame, until losing any maintenance of these components. In order to avoid these risks and to make reliable the exact positions of the screws, the mounting station comprises a screwdriver whose power supply is slaved to the sensors created by means of the rods 8 and stops 6. When the rod 8 comes into contact with the stop 6, set to represent the desired position of the screw, the power supply of the screwdriver is cut off, the screw can no longer be screwed.

Figures 1D and 1E show an alternative embodiment of the mounting station. According to this variant, the mounting station comprises means for positioning the components to be assembled: four bases 7 'and four rods 8' able to pass through the bores of the front, rear and spacer walls (shown hatched in FIG. 1 E). Unlike the previous example, the rods 8 'are shorter and do not fully penetrate the holes. Thus, this free portion 2X 'of the bores is the simplest possible pre-positioning means of the set screws 9 prior to their screwing 15 in the frame components. A screwdriver support 17 '(drilling type) can complete these pre-positioning means, ensuring the perpendicularity of the screwing. Finally, according to this variant of FIGS. 1D and 1E, the means for controlling the depth of screwing of the grub screws 9 consist of timers limiting their tightening times from their pre-positions. Thus the operator easily pre-positions the screws 9 with the help of the screwdriver support 17 ': at the entrance of the bores, the screws 9 inserting a few tenths of millimeters in the free part 2X' (the bores being slightly smaller than the diameters of the screws). The operator 25 can then operate the screwdriver until it stops automatically. The tightening time is predefined according to the thickness to be screwed on (for a substantially constant speed of rotation and a fixed pitch). Alternatively, sensors positioned on the screwdriver support could indicate the vertical movement of the screwdriver and thus constitute these means for controlling the depth of screwing of the set screws. Advantageously, the mounting station according to the invention, according to these two variants, allows the use of grub screws 9 for assembly of the frame. These grub screws 290 are thus screwed so as to have threads engaged in the thickness of the transparent walls before 2 and rear 4. However, the grub screws 9 not being pressed against an element, they 5 are likely to move during vibration or manipulation of the frame. They may thus no longer be engaged in the thickness of the transparent walls 2 or 4, that is to say no longer ensure their assembly function of the frame. In order to avoid this risk, the grub screws 9 are screwed into the bores of the 10 components of the frame, these bores not being tapped but slightly smaller than the screw diameters. By way of example, although very different from the self-tapping screws, STHC M4 standardized screws associated with bores of a few tenths of a millimeter may constitute an effective maintenance.

Advantageously, these STHC M4 screws are discrete in size and shape, and are visually identical on both sides of the frame: on one side a diameter of 4mm with a hollow hexagonal footprint of 2mm, and on the other side a diameter of 4mm (flat-tipped screw).

Thus according to the invention, the manufacture of frames is easy. The manufacturing station is simple and inexpensive. Mounting times are reduced. However, the frames according to the invention perform their function both recto alone and recto / verso, qualitatively. Their fastening elements: - are discrete in size and shape; have a front face and a reverse face visually identical; - can be flush with surfaces, reliably. Indeed, as shown in FIGS. 2A and 2B showing the display frame of FIG. 1A once assembled, the set screws 9 can be chosen with a length substantially equal to the stacking of the thicknesses of the transparent walls 2, 4 and the spacer 3. They can be flush with the transparent walls 2, 4.

In addition, the strips 3A, 3B can very simply play a role in terms of quality or personalization, being of all types of plastics, colored, opaque, diffusing, transparent, of all types of metals, in particular. wood (veneers), leather, etc ... Finally, the grub screws can be flush surfaces, or overflow so as to allow the associated supports of the simplest. Figure 3A shows a perspective view of a first variant of the display frame of Figures 2A, 2B for an inclined frame support. The set screws 109B housed in the upper holes are flush with the surfaces, as in the example of Figures 2A, 2B.

On the other hand, grub screws 109A housed in the lower holes have a length greater than the stack of the thicknesses of the transparent walls and the spacer. They protrude from the rear wall so as to screw threaded studs 110. For STHC M4 screws, an M4 tapping on a few millimeters of the pads 110 is enough. These pads 110 cooperating with the lower edge B constitute the support for presenting the display frame 101 in an inclined position. As shown in Figure 3B in side view, the inclination of the frame 101 depends on the length e of the pads 110 and the offset d between the pads 110 and the lower edge B of the frame 101.

Advantageously, the frame supports are simply tapped studs. In addition, they can be delivered separately frames, ready to be easily mounted by users, without tools, this optimizing packaging. Finally, they also contribute to the quality and personalization of the frame, which can be plastics, metal, wood, etc. FIG. 4A shows a perspective view of a second variant of a display frame according to FIG. first embodiment of the invention, relating to a right frame support.

The set screws 209B housed in the upper bores are flush with the surfaces. The set screws 209A housed in the lower holes have a length greater than the stack of the thicknesses of the transparent walls and the spacer. They overflow on both sides of the transparent walls so as to be able to screw on both sides threaded studs 210. These pads 210 constitute the support for presenting the display frame 201 in the upright position. As shown in Figure 4B in side view, the pads 210 are substantially tangent to the lower edge B of the frame 201. For the same reasons, the threaded studs 10 of the example of Figures 4A, 4B have the same advantages as those of the Figures 3A, 3B. Figure 5 shows a partially exploded perspective view of the support of a third display frame variant according to this first embodiment of the invention, relating to a suspended frame support. According to this third variant, the grub screws 309A housed in the lower holes are flush with the surfaces, and the grub screws 309B housed in the upper bores which have a length greater than the stack of the 20 thicknesses of the transparent walls. and the spacer. They protrude from the rear wall so that hooks 310A can be attached thereto. In this example, these hooks 310A can be threaded onto the set screws 309B projecting from the upper bores and then secured by means of nuts 310B, clamping the hooks 310A against the rear transparent wall. These hooks 310A and the nuts 310B constitute the support 310 to present the display frame 301 in the suspended position. The hooks 310A of FIG. 5 may be intended for example for cables stretched in commercial environments. Hooks of different shapes could obviously be suitable for other supports, for example: hanging bars; - wall strips; parts of furniture; The grooves of the wall sections made by panels separated by these grooves. Figure 6 shows a perspective view of a fourth display frame variant according to the invention concerning a standing frame. According to this fourth variant, the frame comprises six grub screws. Four grub screws 409 are housed in the lower and upper holes and are flush with the surfaces. A set screw 409A is housed in the central lower holes and has a length greater than the stack of the thicknesses of the transparent walls and the spacer. Another set screw 409B is housed in the central upper bores and has a length greater than the stack of the thicknesses of the transparent walls and the spacer. These two set screws 409A, 409B overflow the rear wall, so as to attach 410A hooks for a 410C tube.

In this example, these two hooks 410A can be threaded onto the set screws 409A and 409B overhanging the lower and upper holes, and then secured by means of nuts 410B, clamping the hooks 410A against the rear transparent wall. These 410A hooks, the 410B nuts, the 410C tube, and its 410D base 20 constitute the support 410 to present the display frame 401 on foot. According to a variant not shown, the hooks can be fixed to the frame by means of screws other than those useful for its assembly. For example, countersunk screws could be housed in the thickness of the back wall, in order to fix hangers on this wall, at any desired position. This, for example, may allow to place two frames on either side of the same tube on which they cling. Figure 7 shows an exploded perspective view of a floor frame according to a fifth variant. The front and rear transparent walls 502, 504 are respectively pierced below 502A ', 504A' and 502B ', 5046' respectively. The spacer 503 is constituted by the lower 503A pierced strip 503A 'and the pierced upper strip 503B 503B'. In this variant, the transparent walls 502, 504 and the lower strip 503A 5 have a substantially T-shaped shape and respectively comprise a tab 502C, 503C, 504C adapted to fit within a tube 510. Inserts 502D, 504D integral legs 502C, 504C (for example adhesive) reinforce this adjustment. This tube 510 composes the support for a standing display frame.

Advantageously, the examples of FIGS. 3A to 7 present variants of a first embodiment of the invention allowing simple associated supports for all the most common configurations (inclined or straight standing frames, to be suspended, on foot). . For all these examples, the supports can be delivered separately, so as to optimize the packaging. For all these examples, the mountings of the supports are carried out easily, quickly and without tools. However, the frames of Figures 3A and 7 and their supports are qualitative, may be advantageously double-sided. This first embodiment of the invention comprises, for all these variants shown, strips facilitating insertion or removal of sheets, for example for advertising-type uses at the point of sale. In the description above, the holes and bands are in all the upper and lower examples, to facilitate general understanding. Of course, one skilled in the art will readily understand that they can be right and left, or even oblique, provided that the sheets are held in their display position by any means whatsoever. In the same way, the front and back walls are in all the examples both transparent. Of course, the back wall can be opaque for a frame whose use is provided only in front. It is also obvious to one skilled in the art that the invention can be extended to other forms of frames, having one or more display windows, including other numbers of holes and screws, screws that may overflow. for fixing other elements than supports (eg decorative elements), the frames may include other functions than the display of one or more sheets (for example, to support and present products, for example to 5 using studs screwed on the grub screws assembling the frame or other screws provided for this purpose). It is the same for the mounting station which will be modified accordingly, for example the number of screw depth control means and positioning means will be adapted to the number of holes and screws of the frame.

Figure 8A shows an exploded perspective view of a display frame according to a second embodiment of the invention. Unlike the display frame of FIG. 1A, the display frame 1 'according to this second embodiment of the invention does not have bands or any spacer. It comprises a transparent front wall 2 'forming a front portion AV, and a rear transparent wall 4' forming a rear portion AR. The visual VI is to be centered between these two transparent walls, set screws 9 'assembling together.

Unlike the example of FIG. 1A, this second embodiment of the invention does not provide an assembly station and is not intended for series assemblies. Indeed, the mounting of such a display frame means: - position a transparent wall, for example on a table 25 - position the visual on this wall, centering it position the second transparent wall, by superimposing it on the first possibly using two inserts to be placed diagonally in two superimposed bores of the two walls, screwing the grub screws in the superimposed bores of the two transparent walls, for example with the aid of a hexagonal Allen key - the case If necessary, remove the inserts to screw the last two setscrews - take the assembled assembly and visually check the screw depths of the grub screws 2906634 16 - fit the assembly and screw or unscrew until a positioning of all headless screws flush with the transparent walls. And the visual change requires to redo these operations.

The display frames of this second embodiment of the invention are therefore completely unsuitable for point-of-sale advertising uses. On the other hand, they are quite suitable for photo frames for private use. Indeed, for this type of frames, it is common that the implementation of the photo 10 requires some time, this being not or little repeated. Photo frames according to this second embodiment of the invention, sold as a kit, are therefore perfectly suitable for particular consumers. The use of grub screws according to the invention does not in this case make it possible to optimize the assemblies by stations adapted for series. However, in the same way as for the first embodiment of the invention, the use of grub screws makes it possible to obtain: photo frames that are simplified to the extreme, which can be the most economical of photo frames, which are nevertheless qualitative, whose fixing elements are discrete in size and shape - front and back picture frames, with visually identical faces - simple associated supports for all configurations (inclined or straight picture frames, etc.), 3A to 7 being applicable to the photo frame of this second embodiment of the invention, once assembled (as shown in Figure 8B). Figure 9A shows an exploded perspective view of a display frame according to a variant of this second embodiment of the invention.

According to this variant, a decorative spacer 3 "is interposed with the transparent walls before 2" and rear 4 "Its function is not to facilitate the change of the photos VI.It is aesthetic, the spacer 3" being in this example of Figure 9A an outline to position with the photo (between the two transparent walls), around the photo. It is also to facilitate the centering of the picture VI, which is better visible in Figure 9B representing the frame once assembled. According to this variant of FIGS. 9A and 9B, the rear transparent wall 4 "is locally perforated so as to allow the positioning of the photos to be adjusted once the frame is mounted, by sliding them frictionally through this 4D opening. ". According to a variant not shown, this perforated rear wall solution allows delivery of the mounted frames (without decorative spacer), the transparent walls being assembled contiguous or very slightly offset by means of a mounting station such as those described by FIG. invention (removable spacers of the mounting station for shifting the transparent walls).

According to this variant of FIGS. 9A and 9B, the rear transparent wall 4 "also includes holes 4E" for pressure screws whose screwing bears on the photo placed between the two transparent walls. This solution reinforces the maintenance of the photos positioned within the frames.

The figures and their descriptions made above illustrate the invention rather than limiting it. The reference signs in the claims are not limiting in nature. The verbs "understand" and "include" do not exclude the presence of elements other than those listed in the claims. The word "a" preceding an element does not exclude the presence of a plurality of such elements.

Claims (10)

  1. Display frame (1, 101, 201, 301, 401, 501, 1 ', 1 ") for receiving and holding at least one visual in the display position, the frame comprising: - a front part (AV) and a rear portion (AR), at least one of said portions being at least partially transparent to leave at least part of the visual visible, and - a plurality of holes in the front and rear portions, at least one hole in the front portion (AV ) being associated with a drilling of the rear part (AR), said associated bores being substantially aligned when the front part (AV) and the rear part (AR) are superimposed, - a plurality of fastening elements (9, 109A, 109B, 209A, 209B, 309A, 309B, 409, 409A, 409B, 9 ', 9 "), each fastener (9, 109A, 109B, 209A, 209B, 309A, 309B, 409, 409A, 409B, 9' , 9 ") penetrating said associated holes to secure the front portion (AV) and the rear portion (AR), the display frame is characterized in that these elements fasteners (9, 109A, 109B, 209A, 209B, 309A, 309B, 409, 409A, 409B, 9 ', 9 ") are at least in part: - grub screws, - of length at least substantially equal to stacking the thicknesses of the front (AV) and rear (AR) portions, and screwed to present threads substantially engaged at the front and rear ends of this stack of thicknesses.   2. Display frame according to claim 1, characterized in that it comprises: a transparent wall (2, 502) constituting the front part, pierced in its lower part (2A ', 502A') and in its part upper (2B ', 502B'), - a transparent wall (4, 504) forming the rear part, pierced in its lower part (4A ', 504A') and in its upper part (4B ', 504B'), - a a spacer further comprising the front or rear portion, comprising a pierced bottom flange (3A, 503A) (3A ', 503A') and a pierced upper flange (3B, 503B) (3B ', 503B'); the display frame is characterized in that the assembly is held by grub screws (9, 109A, 109B, 209A, 209B, 309A, 309B, 409, 409A, 409B) housed in the lower holes (2A ', 502A ', 3A', 503A ', 4A', 504A ') and upper (2B', 502B ', 18 2906634 19 3B', 503B ', 4B', 504B '), and whose threads are engaged in the thickness of the transparent walls before (2, 502) and rear (4, 504).   Display frame according to claim 1 or 2, characterized in that at least one set screw (109A, 209A, 309B, 409A, 409B) has a greater length than the stack of the front and rear, so as to overflow this stack of thicknesses and to present a fixing means, by screwing on this projecting thread length, a support (110, 210, 310, 410). 10   4. Display frame according to claim 3, characterized in that the grub screws (109A) housed in the lower bores have a length greater than the stacking of the thicknesses of the front and rear portions, and protrude from the rear portion of in order to be able to screw pads (110), these pads (110) constituting a support for an inclined display frame, the inclination (a) of the frame (101) depending on the length (e) 15 of the pads (110). ) and the offset (d) between the pads (110) and the lower edge (B) of the frame (101).   5. Display frame according to claim 3, characterized in that the set screws (209A) housed in the lower holes have a length greater than the stacking of the thicknesses of the front and rear parts, and overflow of the front and rear parts so as to be able to screw on either side of the pads (210), these pads (210) constituting a support for a right display frame, the pads (210) being substantially tangent to the lower edge (B) of the frame (201).   6. Display frame according to claim 3, characterized in that the set screws (309B) housed in the upper bores have a length greater than the stacking of the thicknesses of the front and rear parts, and overflow so as to be able to fixing hooks (310), these hooks (310) constituting a support for a display frame (301) suspended.   7. Display frame according to claim 1, 2 or 3, and its support, characterized in that grub screws (409A, 409B) for fixing the front and rear parts, and / or other screws provided specifically for this effect, overflow the rear portion of 2906634 20 so as to fix the hooks (410A), these hooks (410A) may constitute a support (410) for a display frame (401) on foot.   8. Display frame according to claim 2, characterized in that the transparent walls (502, 504) and / or the lower strip (503A) comprise at least one tab (502C, 503C, 504C) adapted to adjust within a tube (510), this tube (510) constituting a support for a display frame (501) standing; the tabs (502C, 504C) capable of supporting an insert (502D, 504D) to enhance adjustment and retention of the frame (501) within the tube (510). 10   9. A display frame assembly station according to one of the preceding claims, characterized in that it comprises means for controlling the depth of screwing of said set screws (9, 109A, 109B, 209A , 209B, 309A, 309B, 409, 409A, 409B), capable of passing right through the holes. 15   10. A display frame assembly station according to claim 9, characterized in that the means for controlling the depth of screwing of the set screws (9, 109A, 109B, 209A, 209B, 309A, 309B, 409, 409A, 409B) consist of sensors detecting the desired screwing positions of the set screws (9, 109A, 109B, 209A, 209B, 309A, 309B, 409, 409A, 409B); the assembly station may further comprise a screwdriver whose power supply is controlled by these sensors, the detections of the desired screwing positions cutting the power supply of the screwdriver.