EP0209420A1 - Device such as a frameless holder for presenting a document - Google Patents

Abstract

The device is of the clip-frame type designed to display a document in the form of a text or picture. It comprises spring clips designed to hold the edge of the document against a rigid plane support by means of claws. Each clip is rivetted to the support and the claw on each clip is at the end of a curved branch incorporating a lever. The curvature and elasticity of this branch tend to hold the claw against the document or an optional piece of glass over it. When the lever is depressed the clip "opens" and the claw moves back to enable a document to be inserted or removed.

Description

Devices known as coasters are already known which make it possible to hold a document applied by its periphery against a generally rigid support by means of clamps arranged on the rear face of the support, a transparent plate such as a glass plate being generally interposed between the document itself and the clips

Most of the time. 1 elastic effect of the clamps is used to hold the support together. the document and the glass plate so that the clamps are not positively secured to the support and therefore cannot be used as a means of hanging the coaster from a hook.

Additional means are then provided such as a link which is placed on the rear face of the support and which brings all the clips together to prevent them from spreading. This link which can itself be used for supporting the coaster by a nail planted in a wall

We also thought of completing 1 elastic clamping effect to improve the immobilization of the clamps. in particular by providing acute lugs to penetrate into the material of the support such as cardboard. chipboard wood etc

These known devices do not however give complete satisfaction because the clamps are poorly held 1 set is unreliable and often inconvenient

The present invention overcomes all these drawbacks and makes it possible to obtain a device such as a coaster whose handling is very simple and whose clamps are perfectly held in place. which ensures very reliable mounting and perfect cohesion of the document support and, where appropriate, the glass plate

To this end the invention relates to a device for presenting a document such as a text or a graphic representation by keeping it applied by its periphery against a so-called front face to a flat support. of the type comprising elastic clamps which must be arranged against the face opposite to the previous one and said rear and which each have at least one claw having to be located opposite the front face to hold the document generally with the interposition of a transparent plate between this claw and the document characterized in that each clamp is fixed to the support and has an elastic branch which carries the claw and which is arched so as to be able to simultaneously exert two stresses on said claw 1, one from the periphery of the support towards its center and the other from the front face towards the rear face . this branch being integral with a lever offset relative to it and which is capable of simultaneously reversing the two stresses when by acting on this lever we tend to eliminate its offset relative to the branch

• - chaque pince présente. à l'opposé de la branche élastique par rapport à 1 endroit par lequel elle doit ëtre fixée au support- une patte pliée pour être écartée de la face arrière du support et comportant des moyens de liaison avec un organe d'appui ou de soutien tel que chevalet. crochet. lien et analogue
• - 1 extrémité de chaque patte est munie d une encoche
• - le dispositif comporte un chevalet qui a au moins un logement pour recevoir l'arête inférieure du dispositif complet et une branche dont 1 extrémité est traversée d'une ouverture dans laquelle doit pénétrer une patte d une pince
• - la patte des pinces est traversée d un trou et l'ouverture de la branche du chevalet possède un relief devant pénétrer dans ledit trou quand le chevalet est en place

According to other features of the invention

• - each clamp present. opposite the elastic branch with respect to 1 place by which it must be fixed to the support - a folded tab to be separated from the rear face of the support and comprising means of connection with a support or support member such that easel. hook. link and the like
• - 1 end of each leg is provided with a notch
• - The device comprises an easel which has at least one housing for receiving the lower edge of the complete device and a branch, one end of which is crossed by an opening into which a leg of a clamp must penetrate
• - the leg of the clamps is crossed by a hole and the opening of the branch of the bridge has a relief which must penetrate into said hole when the bridge is in place

The invention will be better understood from the detailed description below made with reference to the accompanying drawing Of course. the description and the drawing are given by way of example only and are not limiting

Figure 1 is a schematic perspective view of a clamp according to 1 invention.

Figures 2 and 3 are schematic views illustrating the locking and unlocking of a clamp according to 1 invention with respect to a full coaster

Figure 4 is a view of the rear face of a device according to the invention provided with four clamps

Figure 5 is a schematic sectional view showing a device according to 1 invention attached to a nail planted in a wall

Figures 6 and 7 are schematic views respectively in perspective and in profile of a device according to 1 invention associated with a support easel

Figure 8 is a partial schematic view showing the cooperation of an easel and a clamp according to the invention

Referring to the drawing, it can be seen that a device according to the invention comprises clamps which must be fixed to a flat and relatively rigid support in order to maintain a graphic representation against it. a document. a poster etc

Each clamp comprises a base 1 intended for its attachment to a support 2 such as a rigid plate of any known type such as agglomerated wood fibers from plywood, cardboard. synthetic material or any other material

Here the fixing of the clamps by their base 1 is obtained by providing in the latter a hole 3 through which passes a rivet 4 which crosses all the thickness of the support 2 but which does not protrude from the so-called front face of the support 2 so that the document to maintain 5 is not distorted

The base 1 of each clamp is secured to a branch 6 folded to present a tab 7 carrying a claw 8 of small extent and substantially parallel to the branch 6

The branch 6 is arched to extend obliquely to the base 1 at an angle whose value can be of the order of 20 to 25 degrees and this so that the claw 8 is substantially at the same level as the base 1

In the branch 6 is cut a lever portion 10 which is also arched in the opposite direction of the branch along a transverse line 11.

To constitute a complete device. clamps are fixed to the support 2 in variable numbers according to the dimensions thereof and according to an arrangement which may be different depending on whether 1 is preferred to have a single clamp per side or more. even on two opposite sides only and not on the others etc

This fixing can be carried out industrially in a particularly efficient manner since the support 2 is made of a robust material and that can easily be produced with a tool ensuring the automatic positioning of the clamps in their place according to the size of the support 2 and by fixing by placing a rivet 4 in each hole 3 of each base 1.

The positioning of the clamps is done in such a way that the tab 7 is located very close to the edges of the support 2, leaving a slight clearance 1 important, being that the claw 8 is well facing the so-called front face on which the document to be present 5 is placed

The clamp is made of an elastic material and in particular of metal so that after fixing and taking into account the arching of the branch 6 each clamp is in the situation which is evoked by FIG. 2 where we see the clamp not only fi .xed on the support 2 but also in the process of holding a document 5 on which a transparent plate 12 such as a glass pane has been placed

We see in this figure 2 that thanks to the elasticity of the clamp and thanks to the bending of the branch 6 the latter exerts a stress according to the arrow F1 c that is to say of the periphery of 1 support assembly 2-document 5- plate 12 towards the center and a stress according to arrow F2 directed from plate 12 towards the support 2 so that the plate 12 and the document 5 are kept applied against the rigid support 2 and are at the same time centered so as not to be able to slide laterally parallel to the plane of the support 2

In a stable position which could be called the active position 1 together is therefore perfectly maintained and the attachment of the clamp by the rivet 4 guarantees excellent mounting reliability since no sliding and no movement of the clamps is possible.

When 1 we want to dismantle the assembly in particular to change the document 5 is pressed on the lever 10 according to the arrow F3 for example by pushing a finger A as shown in Figure 3

The lever 10 which was offset relative to the branch 6 flexes under the pressure of the finger A which tends to eliminate the offset of the lever 10 and the branch 6 and these coordinated movements have the consequence of simultaneously reversing the stress according to the arrow F1 and the stress according to arrow F2 so that the clamp deforms elastically on the one hand according to Ja arrow F4 which corresponds to a release of the claw F8 and on the other hand according to arrow F5 which corresponds to a straightening of the branch 6

Naturally, if the push of finger A according to arrow F3 is moderate or if the push is quickly released, branch 6 rises and there is an intimate combination of the two movements according to arrows F4 and F5 which have only been separated for better understand nature.

If, on the contrary, the pressure is maintained according to the arrow F3, it is possible to prevent the lifting of the branch F6 without hampering its straightening

It is understood of course that when the document 5 and the plate 12 are put in place, we first have to release the claw 8 as shown in FIG. 3 then release any action on the lever 10 so that the clamp returns to its position natural which is that of figure 2

By pressing more or less on the lever 10, the claw 8 is carried more or less in front of the support 2, which makes it possible to provide a document assembly 5 - plate 12 more or less thick, the tightening being always as effective since 1 elasticity and the camber of the branch 6 tend to bring the claw 8 at least up to the plane of the front face of the support 2

To further increase the security of the attachment of the clamp on the support 2 two stampings 15 and 16 are provided on the base 1 in order to punch the support 2 the penetration of the stampings 15 and 16 into the mass of this support 2 having the effect of 1 immobilize in rotation in the event that the rivet 4 could allow the clamp to pivot around from its axis From another side of the branch 6 relative to the hole 3 (or to (ivet 4) is a tongue 20 straightened perpendicular to the base 1 and secured to a tab 21 folded parallel to the plane of the base 1 and therefore in terms of support 2

The tab 21 is provided with a notch 22, the bottom 23 of which is straight and consequently has a certain length.

Thanks to this notch 22 it is possible to hang the coaster to a nail B driven into a wall C (Figure 5) and the linearity of the part 23 allows to perfectly balance 1 together by shifting it more or less relative to the nail 8

We note that this faculty is particularly interesting because the clamp being securely fixed to the support 2 1 hooking to the nail 8 does not present any risk of accidental fall since even if 1 assembly undergoes vibrations the clamp cannot be detached from the support 2

You can also use the clamps according to 1 invention no longer to hang a coaster to a nail but to place 1 set on an easel as shown in Figures 6 and 7

The easel 25 comprises two branches 26 and 27 at 1 end of which are housings 28 and 29 whose width is sufficient to allow the lower edge of 1 support assembly 2 -document 5 - plate 12 to be placed at a suitable inclination.

Between the branches 26 and 27 extends a flying buttress 30 which can advantageously be articulated by its edge 31 to allow an adjustable travel

In a simple solution which is not shown, moreover, 1 flying buttress 30 is simply pressed against the lower clamp of 1 set, but in a more elaborate version, an association of the kind which is shown in FIG. 8 can be provided.

According to this embodiment 1 flying buttress 30 has a slot 32 in the middle of which is a relief 33 the passage between 1 end of the relief 33 and the opposite face of the slot 32 being sufficient to allow 1 insertion of the tab 21

The latter is provided with a hole 34 into which the relief 33 must penetrate as can be seen in FIG. 8

With such an assembly, it is ensured to have perfect support and balance of the coaster relative to the easel 25 because 1 flying buttress 30 can neither. slide laterally since it is held by the short sides of the annuity 32 nor vertically since it is held by the relief 33 engaged in the hole 34

One could also provide at 1 end of 1 flying buttress 30 a simple notch into which the tab 21 would penetrate but this simplified mounting would only provide lateral and not vertical support for 1 flying buttress 30

The invention makes it possible to produce assemblies in the workshop comprising a support 2 and several clamps so that 1 item offered to the customer is perfectly produced by industrial means but imposes on it a predetermined format.

The invention also makes it possible to propose clamps alone that the user can fix on a support of his choice the fixing means which can be of different types and more or less reliable depending on the case.

Naturally. it is possible to use 1 invention for the presentation of documents with or without additional transparent plate

Claims (6)

- Device for presenting a document such as a text or a graphic representation while maintaining it applied by its periphery against a so-called "front" face of a flat support, of the type comprising elastic clamps which must be placed against the face opposite to the previous and called "rear", and which each have at least one claw (8) to be located opposite the front face to hold the document (5), generally with the interposition of a transparent plate (2) between this claw (8) and the document (5), characterized in that each clamp is fixed to the support (2) and has an elastic branch (6) which carries the claw (8) and which is arched so as to be able to simultaneously exert two stresses of said claw (8), one from the periphery of the support (2) towards its center and the other from the front face towards the rear face, this branch (6) being integral with a lever (10) offset relative to which is capable of reversing the two stresses simultaneously icitations when, by action on this lever ('.0), we tend to remove its offset from the branch (6). 2- Device according to claim I, characterized in that each clamp has, opposite the elastic branch (6) relative to the place (3) by which it must be fixed to the support (2), a tab (21) folded to be separated from the rear face of the support (2), and comprising connecting means (22-34) with a support or support member such as easel (25), hook, link and the like. 3- Device according to claim 2, characterized in that the end of each tab is provided with a notch (22). 4- Device according to claim 2, characterized in that it comprises an easel (25) which has at least one housing (28-29) for receiving the lower edge of the complete device and a branch (30) whose end is crossed by an opening (32) into which a tab (24) of pliers must penetrate. 5- Device according to claim 4, characterized in that the lug (21) of the clamps is traversed by a hole (34) and the opening (32) of the branch (30) of the bridge (25) has a relief ( 33) having to enter said hole (34) when the easel (25) is in place. 5- Device according to claim 4, characterized in that the lug (21) of the clamps is traversed by a hole (34) and the opening (32) of the branch (30) of the bridge (25) has a relief ( 33) having to enter said hole (34) when the easel (25) is in place.

Images