FR2534484A1 - New construction set constituted of panels of geometric shapes which can be assembled - Google Patents

Abstract

The invention concerns a new construction set constituted of panels of geometric shapes which can be assembled. Each panel of geometric shape comprises on each edge, on the one hand, a male member 5 forming a cylindrical pin provided with two transverse bearing surfaces in the form of concave spherical caps 9, 9' surrounded by a convex truncated cone-shaped guidance ring 5a, 5b and, on the other hand, a housing 7 formed from two protrusions 6 and 6' carrying bearing surfaces in the form of convex spherical caps 8, 8'. Application to construction sets for educational and/or for amusement purposes.

Description

The present invention relates to a new construction set intended to allow the production of volume or plane shapes of varied and possibly very complex structures.

There are known construction games made from nestable or built-in volume forms which have the advantage of using a simple assembly system, therefore accessible to children of the first ages.

However, the possibilities of evolution of these games remain limited and include only weak uses in the didactic field, for example to allow the realization of polygonal plane shapes or the realization of polyhedral volume shapes.

The use of assemblable planar elements to constitute volumes, on the contrary, allows great flexibility of realization and adaptation and makes it possible to produce an infinite number of forms that closely follow the representation of forms that are found in real life and that the child will want to reproduce.

It is in fact understood that the use of volume forms, for example of cubes or of parallelepipeds assembled of the nestable brick type, does not make it difficult or difficult to produce volumes comprising slopes or planes at non-right angles; this is remedied by using bricks of small dimensions, which makes it possible to produce slopes or angular planes with respect to a flat face, the angular plane being produced in reality in the form of stairs by successive gradations of the superimposed layers.

Are known, in particular from the French patent, No. 73.15.856 of the construction elements formed of plates of geometric shapes and assembled by their edges to conform volumes of various shapes.

However, the assembly system which is used does not appear satisfactory insofar as the assembly is obtained by male and female tongues respectively connected to the body of the wafer; so that the engagement of the removable securing members (tongues and slots) cannot in reality be obtained by a frontal engagement movement but requires engagement by a complex movement in which one of the sides of the tongue is first engaged in the slot, then locked in its extreme lateral position to allow engagement of the opposite edge of the tongue; which in fact requires a twisting movement; under these conditions, the realization of a closed polyhedral structure is practically impossible, the last two edges of the last two plates to be secured being blocked and they are no longer likely to follow this complete movement which allows the engagement of the tongues in their slots receptors.

In addition, the tongues, respectively male and with slots or female tongues, are articulated on the body of the wafer by a material veil which tends to hold the two adjacent wafers in the same plane or at a small angle; however, it is desirable to be able to position two plates by forming a dihedral of any angle, capable of being maintained in a determined angular value; which is not obtained in the prior devices by male and female tongues which tend to exert a return spring force bringing two neighboring plates in the same plane or in planes forming between them an angle of low value.

So that the prior devices using flat plates provided with means for assembling their edges, could only be implemented for materials sufficiently flexible to allow a certain play during the mutual engagement of the tongues; but the use of a material of low rigidity (necessary to allow the play of the securing tabs), has the drawback of limiting the construction possibilities; indeed, from a certain weight, the lower plates will tend to sag; - all the more so as the absence of rigidity in the wall and the spring effect which is exerted at the level of the articulations formed by the folding of the tongues, tend to cause warping (bloated form) of the walls, which further limits their mechanical strength in the plane of the wafer and moreover detracts from the aesthetics of the results obtained.

Finally, the currently known assembly devices only allow a single closed structure to be obtained, in the form of a polyhedron (possibly of complex shape with multiple growths), but without allowing connection of a polyhedral structure on another or without allowing the juxtaposition and assembly of two plates or two flat structures without common edge
The present invention overcomes these drawbacks.

The invention indeed makes it possible to produce a construction set from assemblable plates - by allowing the production of self-supporting and stable structures of very large dimensions, with a construction register the variations of which are considerably extended thanks to the use of elements allowing not only the assembly of plates according to a common edge, but an assembly of two plates according to two intersecting planes without a common edge between the plates; which allows the realization of multiple representations and considerably developed compared to the possibilities of previously known construction games.

To this end, the invention relates to a construction set of the type consisting of a plurality of assemblable elements and each element comprising for this purpose the removable securing members with a view to producing volumes of multiple and varied shapes; each element being of the type formed by a substantially flat plate of geometric configuration and each of whose sides comprises a first and a second complementary securing member, arranged symmetrically and at a fixed distance along each edge of the plate and projecting with respect to this edge, and the construction clearance is charac terse in that a first securing member consists of a lug formed by a body of revolution secured to the edge of the wafer, while a second member consists of a housing able to receive said lug penetrating without play and force in its receiving housing.

Preferably said fastening member consisting of the receiving housing and complementary to the first member or lug, in the form of a body of revolution, comprises two opposite bearing faces along the axis of revolution of the lug penetrating into the housing, the two faces support itself consisting of walls of revolution of the same axis and complementary to the faces of the lug located opposite thereby allowing stable maintenance of the lug in its receiving housing, according to a multiplicity of angular positioning.

Thus, two neighboring plates form a dihedral of any angle, the plates are assembled by two sets of removable securing members, each set comprising a first securing member coming from a wafer and a second complementary securing member coming from the adjacent plate.

Preferably, according to the invention, the lug forming the first securing member consists of a cylindrical body of axis - parallel, adjacent and slightly outside the edge of the carrier plate, and the cylindrical body comprises on each side transverse a frustoconical crown, the receiving housing of said cylindrical body itself consists of two protuberances coming from the edge of the plate and separated by a continuity solution constituting the receiving housing of the cylindrical lug, the two protuberances comprising for this purpose two facing walls, forming said receiving faces of the cylindrical lug and the bearing faces being complementary to the transverse faces or
bearing faces of the lug, these bearing faces being of frustoconical shapes along an axis collinear with the axis of the cylindrical lug.

According to another characteristic, the distance between the two bearing faces of the housing forming the second securing member is disposed on the edge of the plate in a position symmetrical to the median transverse plane of the cylindrical lug.

According to yet another characteristic, the elements making up the construction set consist of geometrical shaped plates, each side of the plate being equal or multiple of the same basic module, and each modular interval on one side of a element has in symmetrical position a lug constituting the first removable securing member and a complementary receiver housing constituting the second removable securing member.

According to another important characteristic of the invention, the game comprises an element of angle transmission for the assembly of two plates capable of between arranged in two separate planes and having no common edge and this element of assembly consists of a lug forming a first securing member and associated with a receiving housing constituting the second securing member.

Preferably and in a particular embodiment of the assembly element, the lug consists of a cylindrical body while the housing is made up of two protuberances comprising bearing faces located opposite and capable of containing said cylindrical lug, the axis of the cylindrical lug forming a non-zero angle with the axis passing through the centers of said bearing faces, and preferably this angle is equal to 900.

According to a more particular embodiment of the invention, the lug is formed from a cylinder whose axis is parallel and slightly outside the edge of the plate, each transverse face of the lug has a central wall d concave support, in the form of a spherical cap, the second member constituting the receiving housing of said lug is itself in the form of two cylinders of external section identical to said lug, the two cylinders being paired and arranged coaxially with said lug, the interval between the two cylinders constituting the female receptor housing the cylindrical lug, the edges facing each other. two twin cylinders constituting convex faces in the form of spherical caps, forming support faces and complementary to the concave faces of the cylindrical lug in the engagement position of the latter.

According to yet another characteristic, the axis of revolution of the bearing faces of the removable fastening members respectively of the first and of the second fastening member is located in a plane containing one of the plane walls of the wafer.

And the wall of the plate opposite to that whose plane contains the axis of revolution of the fastening members ends in a cut or bevel along a plane intersecting the plane containing the other wall, the edge formed by the two planes secants being collinear with the axis of revolution of the joining bodies.

Other characteristics and advantages of the invention will emerge from the description which follows and which is given in relation to an embodiment presented by way of nonlimiting example and with reference to the accompanying drawings.

Figure 1 shows a plan view of two elements according to the invention before their assembly.

Figure 2 shows the same elements of Figure 1 in the assembly position.

Figure 3 shows a detail view of the fastening members from two elements before their assembly.

Figure 4 shows the securing members of Figure 3 in the assembly position.

FIG. 5 represents a sectional view along line V,
V, of figure 3.

FIG. 6 represents a sectional view along line VI,
VI, of Figure 4, the two assembled elements being in the same plane.

FIG. 7 represents a sectional view of the fastening members, the two plates or elements of the construction set being secured at 900.

Figure 8 shows a sectional view of the securing elements, the two plates being arranged parallel to each other.

Figure 9 shows a plan view of an intermediate bevel gear element.

Figure 10 shows this element in a side elevation view.

FIG. 11 represents this same element according to a front elevation view.

Figure 12 shows the angle gear element in perspective.

Figure 13 shows the joining of three plates showing the use of the intermediate angle transmission element
FIG. 14 shows a schematic example of the joining of plates constituting the building element, at any angles.

FIG. 15 shows an alternative embodiment of a construction element of triangular shape and comprising perforations.

FIG. 16 represents another variant in which the triangular element or plate has a central recess.

Figure 17 shows various embodiments of volume according to simple geometric shapes.

FIG. 18 gives an exemplary embodiment of a construction, here representing an automobile using the pads according to the devices of the invention.

FIG. 19 is an example of a plate corresponding to a sub-multiple of the square plate of FIG. 1.

Figure 20 shows an example of architectural construction.

By considering all of the figures, it can be seen that the game is composed of a plurality of geometrically shaped plates, for example a square plate 1 or a triangular plate 2.

 It is understood that the shape of the plates preferably follows a regular polygon; from the basic shapes such as the square plate 1 or the triangular plate 2, it is possible to extrapolate to produce polygonal plates, for example pentagonal, hexagonal, etc., which will allow in particular to produce regular polyhedra to achieve particular to geodesic type constructions.

It is understood that the sides of the plates have the same length, so as to allow them to be assembled edge to edge, as can be seen in FIGS. 1 and 2, which corresponds to the simplest form of implementation of the invention; however, it is clear that the invention can be implemented using plates whose sides are the multiple of the same basic module, the module corresponds to the length 1 of one side of the single plates; in the case of plates of which one or more sides would have a length multiple of the module 1, it is clear that this rib may either be associated with a plate whose edge would correspond to the same length, (same multiple of the module 1), but this side could also be associated with a plurality of plates corresponding to an integer.

The elements to be assembled making up the construction set consist of plates or trays of generally flat shape; in the present case, provision has been made to give an additional thickness to the edges so as to obtain a stiffening effect, while reducing the plane center. The profile of this flange is particularly visible in Figures 5, 6, 7 and 8 and it has a particular configuration, constituting an original element and characteristic of the invention.

In particular, this rim comprises on one side a cutaway or bevel 4 which forms an angle preferably of 450, with the general plane of the plate, which will allow, as can be seen in FIG. 7, to bring together two platelets by their bevelled side 4, the two sides then being coplanar, to obtain immobilization of the two plates at an angle of 900.

The edges of the plates comprise assembly members which, in a manner known per se, consist on the one hand of male members forming a lug 5 and of female members made up of two protrusions 6 and 6 'delimiting between them a housing 7 , ergot 5 receptor.

So that each side comprises on the one hand a male member 5 and a receiver assembly 6,6 'and 7.

According to the invention, the trunk members forming lug 5 consist of a cylindrical body of revolution which is attached to the edges of the plate, while the protrusions 6 and 6 ′ are also formed of cylindrical bodies, the faces turned one towards the other, comprising walls of revolution 8,8 complementary to the side walls 9 and 9 ′ of the lug, coming opposite in the position of assembly of the lug in its housing.

In the present example, the bearing faces cooperating with each other, that is to say the faces 8 and 8 'provided on the protuberances 6 and 6' on the one hand and the bearing faces 9 and 9 'provided on lug 5 on the other hand, consist of spherical caps, caps 9 and 9 'are concave on the lug while they are convex on the growths 6 and 6'; but the securing members could be made vice versa, that is to say by placing the convex caps on the lug and vice versa. The concave caps 9.9 ′ are surrounded by a frustoconical ring 5a, 5b convex which guides the introduction of the lug between 6 and 6 '; in addition, the frustoconical crowns 5a and 5b fc a ramp which allows the qlissement of the transverse faces of the lug on the convex caps 9 and 9 'until position <engagement.

The lug penetrates into its housing at foroe; for this purpose, the plates are used in material comprising a slight elasticity, which allows a deformation of the excroiscs 6 and 6 'and their spacing under the thrust exerted by the frustoconical ram 5a and 5b , until mutual commitment; engagement in which the bearing faces 8,8 'and 9 and 9' are then in contact according to a revolution interface.

This allows a complete rotation of the lug inside the housing and therefore any angular position of the two plates relative to each other.

According to Figure 3, we see that the bottom of the housing 7 near the edge of the plate has a recess 10 relative to the alignment of the edge 11, so as to allow the engagement of the advance end of the lug .

Symmetrically, two recesses 12 and 12 ′ are provided on each side of the lug to allow penetration of the protuberances 6 and 6 ′ in the assembly position of the two plates.

 I1 is clear that, in a known manner, the two complementary members located on one side of a wafer are in a symmetrical position relative to the median axis X (gall); the distance between the center distance between the two protrusions 6 and 6 'and the median axis m2 of the lug being constant, so that two sides of two plates are brought together edge to edge, and the members being in head to tail position , a lug always comes to position facing a receiving housing.

According to FIGS. 3 to 8, it can be seen that the axis of the faces of revolution which constitute the cooperating interfaces 8 and 9 on the one hand, and 8 ′ and 9 ′ on the other hand, correspond to the axis of the bodies of revolution formed by the lug 5 and the protuberances 6 and 6 '.

And this axis 13.13 ′ is located in the extension of the plane 15.15 ′, parallel to the general plane of the plate and which belongs to the edges 16 and 16 ′, on the side opposite to the bevel 4.

Thus, the rim 16 of each plate has a face 15 in excess thickness and which is separated from the general body of the plate 17 by a recess 18 and this face in excess thickness 15 remains parallel to the general plane of the plate.

Thus, in the engagement position, the axes 13 and 13 correspond; and the conformation of the rim 16 of the plate allows two privileged positions in which two faces from the two twin plates are in the support position.

When the two bevelled sides 4,4 'are brought into the support position, an adjustment and an assembly of the two a900 wafers are obtained, as shown in FIG. 7.

And according to FIG. 8, the support position of the two planar faces 15 brings the two plates into position twinned parallel to one another.

The position at 900 being a fairly frequent assembly position, the system of the invention makes it possible to guide in particular the young child, still clumsy, who will be able to ensure correct positioning at 900 of two plates; this facilitates on the one hand the assembly of the plates in three dimensions and on the other hand constitutes for the child a theoretical learning on the one hand and practical on the other hand by developing the manual skill to find the support position desired.

The invention further comprises an important development thanks to the use of an intermediate element which is illustrated in FIGS. 9 and following.

This element allows an angle transmission between two plates, for example the plates 20 and 21 (Figure 13) or the plates 22 and 20 'which must be assembled in two planes intersecting at right angles and without common edge.

The intermediate element consists of an assembly comprising two members: either a lug 25 and a housing 27 formed of two protrusions 26, 26 ′, the two members being joined by a web of material 28, and having superimposed axes but arranged according to plans intersecting at right angles.

The lug 25 is identical in its conformation to the lug 5 which is commonly arranged on the edge of the plates, just as the protrusions 26, 26 'are identical to the protrusions 6 and 6'.

Thus, the protuberances 6 and 6 'can receive a lug 25 coming from an assembly member, the transverse face of the lug 25 comprising a face of revolution 9, in the form of a concave spherical cap which therefore comes into rotary support on the caps 8 and 8 'of the receiver housing 7.

And conversely, the protrusions 26, 26 ′ have on their transverse faces facing the interior housing 27, convex spherical caps 8 and 8 ′, which can therefore penetrate and engage in the concave spherical caps 9 and 9 ′ of a lug 5.

We see in Figure 13 the intermediate connecting members 30, 31, come into the engagement position on the pads 20 and 22 respectively, and we see that the implementation of the intermediate angle return elements allows to conform on each edge of the wafer a fastening member arranged along an axis 29 'at right angles to the axis 29 parallel to the edge of the wafer 20.

And the return member 31 which here comprises an empty housing is therefore capable of receiving a lug 5 coming from an assembly plate 21; and the symmetrical housing 7 of the lug 5 of the plate 21 can therefore receive on its side the lug 25 of the assembly member 30 which is itself in support, these two protuberances 26,26 'enclosing the lug 5 of the plate 22.

So that the angle return member allows assemblies between plates without a common edge, the plates intersecting at any angles.

It is in fact understood that the bevel gear 31 for example, can be positioned in rotation along the axis 29, while the receiving plate positioned on the bevel gear 31 can itself be rotated along the axis 29 ', so that the two plates 21 and 20 can be positioned relative to each other, at any two angles.

In the case of assembling twin plates, the construction can thus be obtained, an example of which is shown in FIG. 14 and which shows that the plates can therefore be positioned by virtue of the play of the angle pieces 30, 31 according to any angles being specified that the plates are shown in paired positions in Figure 14, the two plates being parallel, but all kinds of assemblies are possible.

Thus, the two intermediate plates 32, 32 ', which rest on the lower plates 33.33', could be assembled by their top according to a common edge 34.34 '.

It is understood that the device of the invention therefore allows particularly developed assembly possibilities since it is thus possible to form closed volume forms on themselves.

FIG. 17 thus shows simple volume forms made up of regular polyhedra.

And in this respect, the invention allows intellectual, visual and manual learning of geometry in space from an early age.

In terms of fun and education, the invention allows considerable development and there is shown in Figure 18 a simple example of a construction made from the assemblies according to the invention and which here represents a motor vehicle; but it is understood that all sorts of forms and examples which are much more complex or developed can be implemented, for example as in FIG. 20 where an architectural assembly of complex forms has been represented.

But thanks to the return members, these examples are far from limiting, and the closed volume forms on themselves can be advantageously completed, as can be seen in FIG. 14, by assemblies in which the plates are arranged. according to any plans; just as it is possible to combine the two forms of construction, certain plates thus being arranged in the form of flat faces coming to superimpose or complete volume forms.

Many developments are possible based on the fundamental elements of the calls; FIGS. 15 and 16 show by way of example triangular plates comprising constructive variants; for example Figure 15 shows a triangular plate having recesses or perforations which can advantageously constitute bearings for the passage of axes of rotation, as for example that was used in Figures 18 to position in the lower right corner of the triangle 35 the axis 36 of rotation of the rear wheels 37,37 ', as well as the triangle 35' allows to receive the axis of rotation 36 'of the front wheels.

FIG. 16 represents an example in which the plate 38 has a central recess 39.

 It is also possible to use plates as shown in FIG. 19 and which constitute a submultiple of a basic plate; in the example of FIG. 19, the plate 40 constitutes one half of the square plate 1; the plate 40 has on two edges 41, 42, which are shaped according to the basic module 1, the fastening members described above, while the diagonal 43 is left free this allows development by allowing to remain for example in a volumetric folded form on itself a recess corresponding to the side 43 left free.

The invention therefore makes it possible to make available to children of all ages, simple shapes and elements, easily manipulated, capable of presenting various shapes therefore offering an infinite wealth of possibilities for development and construction; the assembly of the fastening elements being done by simple engagement, the manipulation and the advancement of the construction work is therefore rapid, which is encouraging for the child, often put off by the tedious assembly or disassembly work; the plates being of rigid or semi-rigid material (with a slight elasticity to allow the engagement of the fastening members, it is possible to conform particularly resistant volumes, which allows a large dimensional range from elementary and simple volume forms such as those shown in Figures 17 and 18, up to the highly developed architectural constructions, as shown in Figure 20.

In fact, the possibilities of using the system according to the invention are endless and will therefore be constantly renewed; the child can go from looking for a closed volume form, of the balloon type, to an airy construction with intersection of platelets, all with possibilities of unlimited angular variations.

The frustoconical facets 5a and 5b arranged on the lateral faces of the lugs constitute a self-centering device, during the penetration of the lug in its housing; but these self-centering and guiding facets in the movement of penetration of the lug could be arranged on the transverse walls of the housing 7 receiving the lug; these frustoconical facets then placed on the bearing faces of the housing 7 would then define an entry in the form of a funnel open in all the radial directions and guiding the lug penetrating into its housing, whatever the angle of assembly.

Similarly, the bearing faces formed by respectively convex 8, 8 'and concave 9, 9' spherical caps constitute complementary means allowing, by their face-to-face cooperation, a certain immobilization of the organs engaged (lug and receptor housing) and trapped in a parl 'other with possibility of clearance on the one hand and angular variation on the other; but the respectively concave and convex faces can be indifferently positioned on the lug or on the housing, as soon as a concave face of an organ marries a complementary convex face on the other organ.

Claims (10)

Construction set of the type consisting of a plurality of assemblable elements and each element comprising for this purpose the removable securing members in order to achieve volumes of multiple and varied shapes each element being of the type form a flat sensitive plate of geometrical configuration and each of which has a first and a second complementary securing member, arranged symmetrically and at a fixed distance along each edge of the plate and projecting relative to this edge, characterized in that a first securing member consists of a lug (5) formed of a body of revolution secured to the edge of the plate (1,2), while a second member consists of a housing (7) capable of receiving said lug (5 ) penetrating without play and by force into its receiving housing. 2. Construction set according to claim 1, characterized in that said joining member consisting of the housing (7) ~ receiver and complementary to the first member or lug (5), in the form of a body of revolution, has two bearing faces (8,8 ') opposite along the axis of revolution (13') of the lug (5) in place in the housing, the two bearing faces being themselves constituted by walls of revolution of the same axis (13 ) and complementary to the faces (9,9 ′) of the lug (5) located opposite, thereby allowing the lug (5) to be kept stable in its receiving housing (7), according to a multiplicity of angular positioning. 3. Construction set according to one of claims 1 or 2, characterized in that the lug (5) forming the first fastening member consists of a cylindrical body of parallel axis, adjacent and slightly outside the edge of the support plate (1,2), and the cylindrical body (5) comprises on each transverse face a frustoconical crown (5a, 5b) surrounding the bearing faces (9,9 '), the receiving housing of said cylindrical body is - even consisting of two protuberances (6,6 ') coming from the edge (11) of the plate and separated by a continuity solution constituting the housing (7) receiving the lug (5) cylindrical, the two protuberances (6, 6 ') comprising for this purpose two walls facing each other, forming said receiving faces (8,8') for receiving the cylindrical lug (5) and the bearing faces being complementary to the transverse faces (9,9 ' ) or support faces of the lug (5), these support faces being of frustoconical shapes along an axis collinear with the axis of the lug cylindrical. 4. Construction set according to one of claims 1, 2 or 3, characterized in that the center distance ml between the two bearing faces (8,8 ') of the housing (7) forming the second fastening member is arranged on the edge (11) of the plate (1,2) in a symmetrical position of the transverse plane m2 median of the cylindrical lug 5. 5. Construction set according to any one of claims 1 to 4, characterized in that the elements making up the construction set consist of plates (1,2) of geometric shapes, each side of the plate being equal or multiple d '' the same basic module, and each modular gap on one side of an element comprises in symmetrical positions a lug (5) constituting the first removable securing member and a housing (7) complementary receiver: constituting the second detachable securing member . 6. Construction set according to any one of claims 1 to 5, characterized in that it comprises an angle return element (30) for the assembly of two plates capable of being arranged in two intersecting planes and having no common edge and this assembly element consists of a lug (25) forming a first fastening member and associated with a receiving housing 127) constituting the second fastening member. 7. Construction set according to claim 6, characterized in that the angle return element (30) comprises a lug (25) consisting of a cylindrical body while the housing (27) is itself constituted two protuberances (26,26 ') comprising bearing faces (8,8') located opposite and capable of containing said cylindrical lug (25), the axis (29) of the cylindrical lug forming a non-angle zero with the axis (29 ') passing through the centers of said bearing faces, and preferably this angle is equal to 900. 8. Construction set according to any one of claims 1 to 7, characterized in that the lug (5) is formed by a cylinder whose axis is parallel and slightly outside the edge of the carrier plate, each transverse face of the lug (5) has a concave central support wall (9,9 ′), in the form of a spherical cap surrounded by a convex frustoconical crown (5a, 5b), the second member constituting the housing (7) receiving said lug (5) is itself formed by two cylinders (6,6 ') of external section identical to said lug, the two cylinders (6,6') being paired and arranged coaxially with said lug, in position in its housing, the interval between the two cylinders constituting the housing (7) female receiving the cylindrical lug (5), the edges facing the two cylinders (6,6 ') twinned constituting convex faces (8,8') in the shape of caps spherical, forming bearing faces and complementary to the concave faces (9,9 ') of the cylindrical lug (5) dan s the latter's position of engagement. 9. Construction set according to any one of claims 1 to 8, characterized in that the axis of revolution (13,13 ') of the bearing faces (8,8', 9,9 ') of the organs of removable securing of the first and second securing members respectively is located in a plane containing one of the plane walls (15,15 ') of the plate. 10. Construction set according to any one of claims 1 to 9, characterized in that the wall (4) of the plate (1,2) opposite to that whose plane (15) contains the axis of revolution (13 , 13 ') of the fastening members ends in a sectional plane or bevel along a secant plane, the plane (15) containing the other wall, the edge formed by the two intersecting planes being collinear with the axis of revolution ( 13,13 ') of the joining bodies.