EP3821760A1 - Table-blackboard comprising a pivoting mechanism - Google Patents

Abstract

The invention relates to a table-table (1) comprising a support (5), a table top (3) and a tilting mechanism (4) interposed between the support (5) and the table top (3) to allow tilting of the table top. (3) between a table position and a table position, characterized in that the tilting mechanism (4) comprises at least a first link (7) and a second link (8), the ends (7a, 7b and 8a, 8b ) of each of the connecting rods (7, 8) being articulated on the one hand respectively in first articulation points (37, 38) spaced from each other by a distance e1 and integral with the plate (3) and on the other hand respectively in second points of articulation (27, 28) distant from each other by a distance e2 and integral with the support (5), the first and second points of articulation (37, 27 ) of the first link (7) being spaced from each other by a length l1 and the first and second articulation points (38, 28) of the second link (8) being distant from each other by a length l2 and in that the distances e1, e2 and the lengths l1, l2 satisfy the following relation $$\mathrm{l}\mathrm{1}+\mathrm{e}\mathrm{2}>\mathrm{l}\mathrm{2}+\mathrm{e}\mathrm{1.}$$

Description

The field of the present invention relates to furniture equipping classrooms in a college or high school, or even meeting rooms. The invention relates more specifically to a modular table which can be configured as a display and writing board.

Tables and tables generally both include a tray or a flat plate arranged on a support such as table legs or an easel. In the case of a table, the top is generally arranged in a horizontal plane or slightly inclined relative to the horizontal to provide a support surface on which you can place objects or use it for writing. or draw. In the case of a table, the top or the flat plate is oriented vertically or slightly inclined relative to the vertical. The board is then used to display content, for example by hanging posters or writing directly on the surface of the board.

It is practical to have a tool making it possible to perform these two functions, such a device then serves both as a table and as a table and is known under the name of “table-table”. To do this, the orientation of the plate can be modified to adopt either a “table” position or a “table” position and thus adapt to the user's needs. There are devices allowing this change of configuration, but these devices sometimes involve assembly and disassembly steps which can prove to be time consuming. In addition, this type of device sometimes involves the use of specific tools, such as screwdrivers or wrenches, such as adjustable wrenches.

There are also modular devices comprising a plate which is movably mounted on a support so as to be able to switch the plate between a "table" position and a "table" position without having to disassemble the table-table. This type of device generally uses a tilting system linking the plate to the support, these tilting systems often include a pivot connection making it possible to tilt the plate around a fixed pivot axis in order to be able to move from one position to another. In the case of a tilting system using a pivot connection, the change of configuration then consists in pivoting the plate around the axis of the pivot connection of the tilting system between a "table" position and a "table" position. ", Or vice versa.

In such a tilting system, the axis of the pivot is fixed, the height of the plate is thus dictated by the height of the support and by the position of the axis of the pivot connection relative to the plate. The pivot connection is for example arranged in the center of the plate to promote the stability of the device, but the height of the plate in the "table" position is in this case insufficient. It is possible to use telescopic feet within the support to adjust the height of the tray, but this kind of telescopic feet add weight to the support and may involve additional assembly and disassembly steps when changing the position of the board.

The pivot connection can be arranged at the edge of the tray, in this case the height of the tray is suitable both in the “table” position and in the “table” position, but such a pivot connection is then eccentric with respect to the tray, this which can cause problems of stability of the device in the table position or call for a bulky and impractical support. In addition, a sufficiently large space must be provided around the device to be able to proceed with the change of configuration and to allow the plate to be pivoted between its two positions.

Depending on the size, weight and orientation of the platform in relation to the support, the latter must be adapted to be able to carry the weight of the platform and the tilting system. The stand can be bulky and difficult to move. In addition, a compromise is required between the stability of the device and its weight.

The object of the invention is to at least partially overcome these drawbacks of the prior art by proposing a simple, effective and economical solution.

To this end, the invention relates to a table-table comprising a support, a plate and a tilting mechanism interposed between the support and the plate to allow the tilting of the plate between a table position and a table position, the tilting mechanism comprises at least a first link and a second link, the ends of each of the links being articulated on the one hand respectively in first articulation points distant from each other by a distance e1 and integral with the plate and on the other hand respectively in second articulation points distant from each other by a distance e2 and integral with the support, the first and second articulation points of the first link being spaced from each other by a length l1 and the first and second points of articulation of the second link being spaced from each other by a length l2, and in that the distances e1, e2 is the lengths l1, l2 satisfy the following relation l1 + e2> l2 + e1. Such a device does not require an assembly or disassembly step during the change of the position of the plate, this is done by a simple tilting movement of the plate by means of the tilting mechanism comprising the links.

Thanks to the two links and to the different distances and lengths between the articulation points, the tilting mechanism of the table-table allows to obtain a simultaneous "double movement" of rotation and sliding of the plate which requires less space than a tilting system comprising a fixed pivot axis. Such a tilting mechanism therefore makes it possible to change the position of the plate quickly, simply and silently and offers good stability of the table-table in the two “table” and “table” positions.

The connecting rods and their arrangement within the table-switchboard alone ensure rapid, intuitive, secure and silent tilting of the table top. No counterweight system is used in this tilting mechanism. Such a table-table therefore offers a particularly light solution in terms of weight which makes it possible to facilitate the transport and / or movement of the table-table when necessary. Such a design of the tilting mechanism and the resulting weight saving also induce an economic advantage.

• les premiers points d'articulation solidaires du plateau sont supportés par des appendices fixés sur la face du plateau en vis-à-vis du support en position table ;
• les premier et deuxième points d'articulation de la première biellette et le premier point d'articulation solidaire du plateau de la deuxième biellette sont alignés en position table ;
• la première biellette est droite ;
• la deuxième biellette est coudée ;
• le coude de la deuxième biellette est disposé dans le prolongement de l'appendice du premier point d'articulation de la première biellette ;
• le coude de la deuxième biellette est aligné avec les deuxièmes points d'articulation solidaires du support lorsque le plateau est en position tableau ;
• en position tableau, le segment de la deuxième biellette coudée qui est proximale à son premier point d'articulation est parallèle au plateau ;
• la première biellette porte sur sa face opposée au plateau en position table une butée sur laquelle le premier point d'articulation de la deuxième biellette est en appui en position tableau ;
• en section transversale le support présente une forme générale trapézoïdale symétrique ;
• en position tableau, les premiers points d'articulation et le coude de la deuxième biellette sont alignés sur la ligne de symétrie du support ;
• le deuxième point d'articulation de la première biellette est surmontée d'un appui sur laquelle repose le plateau en position table ;
• la table-tableau comprend deux paires de première et deuxième biellettes disposées aux extrémités latérales du support ;
• la table-tableau comprend au moins un ressort élastique interposé entre au moins l'une des biellettes et le support pour solliciter le plateau en position tableau afin de faciliter le changement de la position table en tableau ;
• la table-tableau comprend un panneau additionnel agencé dans le support ; et
• le panneau additionnel s'étend dans le prolongement du plateau lorsque celui-ci est dans une position tableau.

The invention may further comprise one or more of the following aspects taken alone or in combination:

• the first articulation points integral with the plate are supported by appendages fixed to the face of the plate facing the support in the table position;
• the first and second points of articulation of the first link and the first point of articulation integral with the plate of the second link are aligned in the table position;
• the first link is straight;
• the second link is bent;
• the bend of the second link is arranged in the extension of the appendage of the first point of articulation of the first link;
• the bend of the second link is aligned with the second articulation points integral with the support when the plate is in the table position;
• in the switchboard position, the segment of the second bent link which is proximal to its first point of articulation is parallel to the plate;
• the first link carries on its face opposite to the table in table position a stop on which the first point of articulation of the second link is supported in table position;
• in cross section, the support has a generally symmetrical trapezoidal shape;
• in the switchboard position, the first points of articulation and the elbow of the second link are aligned with the line of symmetry of the support;
• the second point of articulation of the first link is surmounted by a support on which the plate rests in the table position;
• the table-table comprises two pairs of first and second links arranged at the lateral ends of the support;
• the table-table comprises at least one elastic spring interposed between at least one of the links and the support to urge the plate in the table position in order to facilitate the change from the table position to the table;
• the table-table comprises an additional panel arranged in the support; and
• the additional panel extends in the extension of the plate when the latter is in a table position.

• [Fig. 1] La figure 1 représente une vue en perspective de la table-tableau avec un plateau en position table ;
• [Fig. 2] La figure 2 représente une vue en perspective de la table-tableau avec un plateau en position tableau ;
• [Fig. 3] La figure 3 représente une vue de détail du mécanisme de basculement de la table-tableau des figures 1 et 2.
• [Fig. 4] La figure 4 représente une vue de profil de la table-tableau avec un plateau en position table ;
• [Fig. 5] La figure 5 représente une vue de profil de la table-tableau avec un plateau en position tableau ;
• [Fig. 6] La figure 6 représente une vue schématique du mécanisme de basculement de la table-tableau des figures précédentes en position table ;
• [Fig. 7] La figure 7 est similaire à la figure 6 et représente une vue schématique du mécanisme de basculement de la table-tableau en position tableau ;
• [Fig. 8] La figure 8 représente une série de clichés schématiques illustrant un basculement du plateau de la table-tableau de sa position tableau vers sa position table ; et
• [Fig. 9] La figure 9 représente une vue en perspective d'un autre mode de réalisation de la table-tableau.

Other advantages and characteristics of the invention will emerge more clearly on reading the following description given by way of illustrative and non-limiting example, and the appended drawings, among which:

• [ Fig. 1 ] The figure 1 shows a perspective view of the table-table with a table top in table position;
• [ Fig. 2 ] The figure 2 shows a perspective view of the table-table with a table top in the table position;
• [ Fig. 3 ] The figure 3 represents a detailed view of the tilting mechanism of the table-table of figures 1 and 2 .
• [ Fig. 4 ] The figure 4 shows a side view of the table-table with a table top in table position;
• [ Fig. 5 ] The figure 5 shows a side view of the table-table with a table top in table position;
• [ Fig. 6 ] The figure 6 represents a schematic view of the tilting mechanism of the table-table of the preceding figures in the table position;
• [ Fig. 7 ] The figure 7 is similar to figure 6 and represents a schematic view of the tilting mechanism of the table-table in the table position;
• [ Fig. 8 ] The figure 8 represents a series of schematic pictures illustrating a tilting of the table-table top from its table position to its table position; and
• [ Fig. 9 ] The figure 9 shows a perspective view of another embodiment of the table-table.

In these figures, identical elements bear the same reference numbers.

The following embodiments are examples. Although the description refers to one or more embodiments, this does not necessarily mean that each reference relates to the same embodiment, or that the characteristics apply only to one embodiment. Simple features of different embodiments can also be combined or interchanged to provide other embodiments.

In the description, certain elements can be indexed, such as for example first element or second element. In this case, it is a simple indexing to differentiate and name similar elements but not identical. This indexing does not imply a priority of one element over another and such names can easily be interchanged without departing from the scope of the present description. This indexation does not imply an order in time either.

It is illustrated schematically at the figure 1 a table-table 1 comprising a plate 3 arranged in a table position on a support 5. More particularly, the table position of the plate 3 denotes a position in which the plane of the plate 3 is substantially horizontal. However, the table position can also refer to a inclined position of the plate 3 relative to a horizontal plane, the angle of inclination of the plate 3 relative to the horizontal plane is then relatively small, it is for example less than 25 °.

The plate 3 is for example a flat plate of rectangular or square shape or of circular shape. The edges of the plate 3, and more particularly the corners of the plate 3 are for example rounded. These roundings can be tangent or non-tangent. The thickness of the plate 3 is for example a few centimeters, it is in particular between one and ten centimeters.

The plate 3 comprises two flat surfaces 3a, 3b located recto-verso with respect to one another. The individual dimensions of the flat surfaces 3a, 3b of the plate 3 are for example between one and five m ² .

The flat surfaces 3a, 3b of the plate 3 are in particular magnetic and are for example configured to exert a magnetic attraction on magnetized objects, such as magnets. According to one embodiment of the plate 3, the latter comprises for example a stack of layers. The two flat surfaces 3a and 3b correspond in particular to the two layers located at the ends of the stack and sandwich the intermediate layers of the stack. One of the intermediate layers of the stack is for example an iron plate of fine thickness, or more generally a plate of fine thickness made of ferromagnetic material capable of attracting magnets.

The flat surfaces 3a, 3b of the plate 3 are also configured to deposit an erasable ink thereon using an erasable ink marker, better known under the name of “marker”. Such surfaces appear in particular on whiteboards.

The erasing of the erasable ink can be carried out with a dry cloth, an eraser pad or a magnetic brush fitted with magnets allowing the magnetic brush to be fixed on one of the flat surfaces 3a, 3b of the plate 3 after use or on the support 5 in the case where it is configured to exert a magnetic attraction on magnetized objects.

The table top 3 of the table-table can be tilted relative to the support 5 between a table position illustrated in particular on the Figure 1 and a table position illustrated in particular on the Figure 2 . Optionally, table-table 1 can include locking means which can be used to lock the plate 3 in its table position or in its table position.

When the plate 3 is in the table position, the plate 3 is for example oriented along a vertical plane. However, the table position of the table top 3 can also designate a position of the table top 3 in which the latter is inclined relative to a vertical plane. The angle of inclination of the plate 3 relative to the vertical plane is then relatively low, it is for example less than 25 °.

Unlike the case where the table top 3 is in the table position, in which only the front / upper face 3a of the table top 3 is easily accessible and usable, the table position of the table top 3 makes it possible to access and operate without major difficulties as well the front / upper face 3a of the plate 3 than the rear / lower face 3b of the plate 3. The plate 3 can thus be operated on both sides when it is in the table position.

The support 5 of the table-table 1 is configured to hold the plate 3 in the table position on the one hand and in the table position on the other hand. According to one embodiment of the support 5 illustrated in the figures 4 to 5 which depict the table-table 1 in a cross section, the support 5 has a generally symmetrical trapezoidal shape. The support 5 comprises for example several tubes 51, 52, 53 which together form the uprights and the crosspieces of a trestle of this form.

A generally symmetrical trapezoidal shape of the support 5 along a cross section is obtained in particular by the arrangement of two uprights 53 in the form of inclined tubes, the ends of which are secured to lateral cross members 52 extending perpendicularly to the plate 3 when the latter is in table position. The side rails 52 closest to the plate 3 are for example shorter than the side rails 52 furthest from the plate 3. The uprights 53 are symmetrical to each other along a plane of symmetry P intersecting the side rails 52 in their centers, as illustrated on the Figure 4 . The uprights 53 are for example slightly inclined with respect to the plane of symmetry P.

The support 5 comprises for example four side rails 52 in total, two of which are longer than the other two. It also comprises four uprights 53. In the embodiment of the support 5 described here, the support 5 shows two ends. lateral, each lateral end being defined by a symmetrical trapezoid formed by two lateral crossbars 52 and two uprights 53.

The support 5 also comprises connecting tubes 51 which extend between the symmetrical trapezoids described above. The connecting tubes 51 extend for example parallel to the plate 3 both in the table position and in the table position, they are in particular included in the plane of symmetry P, as illustrated in the figure. Figure 3 . The support 5 comprises for example two connecting tubes 51 which are of the same length. The ends of the connecting tubes 51 are secured to the side crossbars 52, they are for example welded in the middle of the side crossbars 52. One of the connecting tubes 51 is positioned closer to the plate 3 in the table position than the other tube of connection 51. The support 5 then reveals another plane of symmetry P ', this plane P' cuts each connecting tube 51 into two halves and is perpendicular to the first plane of symmetry P ( Figure 3 ).

According to the embodiments of table-table 1 illustrated on all of the Figures 1 to 9 , the junctions between the side rails 52 furthest from the plate 3 and the lower ends of the uprights 53 are for example equipped with casters 9 to allow a user to move the entire table-table 1 on a flat floor, for example example through a classroom or a meeting room. The castors 9 are for example swivel so as to be able to be oriented 360 ° around an axis passing through the center of the castors 9. The castors 9 can be equipped with safety latches making it possible to block the castors 9, for example by means of brakes, to prevent them from rolling on the ground.

Such a support 5 formed of tubes 51, 52, 53 together forming a bridge of generally symmetrical trapezoidal shape is for example advantageously light, economical and solid. The support 5 largely contributes to the stability of the table-table 1 in the two positions of the plate 3; "Table" or "table". Any other form of the support 5 making it possible to maintain the plate 3 in the table position on the one hand and in the table position on the other hand can be envisaged. Any material making it possible to ensure the stability of the table-table 1, such as metal, plastic or even wood, can be considered for the design of the support 5.

A tilting mechanism 4, visible on all Figures 1 to 9 , is interposed between the support 5 and the plate 3 to allow the tilting of the plate 3 between a table position and a table position. The tilting mechanism 4 comprises at least a first link 7 and a second link 8 which are in particular visible on the Figures 2 to 8 . According to the embodiment of the tilting mechanism 4 illustrated on all of the Figures 1 to 9 , the second link 8 is for example longer than the first link 7. According to another embodiment, not illustrated, of the tilting mechanism 4, the first link 7 may be longer than the second link 8, or else they may be of same length.

According to one embodiment of the first link 7, the latter is straight. According to one embodiment of the second link 8, the latter is bent, unlike the first link 7 which is straight. This is particularly visible on Figures 4 to 8 . More precisely, the ends 8a and 8b of the second link 8 each respectively form a straight segment 8ac and 8bc which meet to form an elbow 8c having an obtuse angle ( Figures 6 and 7 ). The obtuse angle formed by the two segments 8ac and 8bc of the rod 8 is for example between 110 ° and 170 °, it is more particularly equal to 150 ° degrees (to be confirmed or modified if necessary by IA FRANCE). In the embodiment of the second link 8 illustrated in the Figures 2 to 9 , the straight segments 8ac and 8bc are of the same length, the elbow 8c is therefore located in the middle of the second link 8.

In general, that is to say independently of the respective shapes of the links 7 and 8, the ends 7a, 7b and 8a, 8b of each of the links 7 and 8 are articulated on the one hand respectively in first points articulation 37, 38 integral with the plate 3 and on the other hand respectively in second articulation points 27, 28 integral with the support 5.

More precisely, a first end 7a of the first link 7 is articulated in a first point of articulation 37 integral with the plate 3 and a second end 7b of the first link 7 is articulated in a second point of articulation 27 integral with the support 5 Likewise, a first end 8a of the second link 8 is articulated in a first point of articulation 38 integral with the plate 3 and a second end 8b of the second link 8 is articulated in a second articulation point 28 integral with the support 5. This arrangement is very particularly visible on the Figures 6 and 7 .

The first articulation points 37 and 38 are distant from each other by a distance e1 and the second articulation points 27 and 28 are distant from each other by a distance e2. The first and second articulation points 37 and 27 of the first link 7 are distant from each other by a length l1 and the first and second articulation points 38 and 28 of the second link 8 are distant from each other. each other of a length 12. As mentioned above, according to the present example 11 <12.

The positions of the second articulation points 27 and 28 are defined so that in the table position ( Figure 6 ), the second articulation point 27 articulating the first link 7 is located at a distance d1 shorter from the plate 3 than the distance d2 between the plate 3 and the second articulation point 28 articulating the second link 8. In other words, when the plate 3 is in the table position, the second point of articulation 27 is closer to the plate 3 than the second point of articulation 28. This is particularly visible on the table. Figure 6 on which the distances d1 and d2 are illustrated by arrows with two heads.

According to an embodiment of the table-table 1 illustrated on all of the Figures 1 to 9 , the second articulation points 27 and 28 integral with the support 5 are for example arranged in plates 22 and 24 integral with the side cross members 52 closest to the plate 3. The plates 22 and 24 are for example integral with the side cross members 52. The plates 22 and 24 are in particular triangular in shape, as illustrated on Figure 3 . More specifically, the plate 22 has a right triangle shape and the plate 24 has an isosceles triangle shape.

Regarding the plate 22, the opposite side of the right triangle is integral with the side cross member 52 and the adjacent side of the right triangle extends perpendicularly to the side cross member 52 in the direction of the plate 3, as illustrated in figure Figure 4 . The right angle is therefore arranged close to the plane of symmetry P, just like the most acute angle of the right triangle formed by the plate 22. The second point of articulation 27 integral with the support 5, configured to articulate the first link 7, is in particular arranged at the level of the most acute angle of the plate 22 in the form of a right triangle.

Concerning the plate 24, the base of the isosceles triangle is arranged parallel to the lateral cross member 52. The main vertex of the isosceles triangle formed by the plate 24 is oriented in the direction of the lateral cross member 52 furthest from the plate 3. The second point d The articulation 28 integral with the support 5, configured to articulate the second link 8, is in particular disposed at the level of the main apex of the plate 24 in the form of an isosceles triangle. According to a particular embodiment of the plate 24, the latter may have the shape of an equilateral triangle.

According to the embodiment of the tilting mechanism 4 illustrated on all of the Figures 1 to 9 , the first articulation points 37 and 38 integral with the plate 3 are closer to one another than the second articulation points 27 and 28 integral with the support 5. More precisely, the distance e2 between the second points d 'articulation 27 and 28 is twice as great as the distance e1 between the first points of articulation 37 and 38.

Generally speaking, the distances e1, e2 and the lengths l1, l2 satisfy the following relation: l1 + e2> l2 + e1. The sum of the length l1 and the distance e2 is greater than the sum of the distance e1 and the length l2. These relationships between l1 and e2 on the one hand and e1 and l2 on the other hand are illustrated in particular on the Figures 6 and 7 . Otherwise expressed, the lengths of the first link 7 and of the second link 8 and the positions of the first and second articulation points 37, 38, 27 and 28 are defined so that the cumulative distance between the first articulation point 37 integral with the plate 3 articulating the first link 7 and the second articulation point 28 integral with the support 5 articulating the second link 8 passing through the second articulation point 27 integral with the support 5 articulating the first link 7 is greater than the distance cumulative between the first articulation point 37 integral with the plate 3 articulating the first link 7 and the second articulation point 28 integral with the support 5 articulating the second link 8 passing through the first articulation point 38 integral with the articulated plate 3 the second link 8.

In this embodiment of the tilting mechanism 4, the first articulation points 37 and 38 are configured to form pivot links respectively with the first end 7a of the first link 7 and the first end 8a and of the second link 8. Likewise, the second articulation points 27 and 28 are configured to form pivot links respectively with the second end 7b of the first link 7 and the second end 8b and of the second link 8. The tilting mechanism 4 thus comprises four pivot links allowing the plate 3 to be switched between a table position and a table position in relation to the support 5.

Together, the first articulation points 37 and 38 integral with the plate 3 and the second articulation points 27 and 28 integral with the support 5 form the vertices of a simple polygon, that is to say not crossed. The order of the simple polygon is more particularly between three and four. In other words, the points of articulation 37, 38, 27 and 28 are the vertices of a polygon which forms either a triangle when the plate 3 is in the table position ( Figure 6 ), or a quadrilateral when the plate 3 is in the table position ( Figure 7 ). In these polygons, the links 7 and 8 do not intersect and therefore do not form a pinching zone in which a user could pinch his fingers. The shape and arrangement of the first link 7 and of the second link 8 within the tilting mechanism 4 are such that in all circumstances the shearing between the components of the table-table 1 is avoided. This arrangement of the links 7 and 8 of the tilting mechanism 4 therefore makes it possible to change the position of the plate 3 in complete safety, without the risk of pinching, jamming, shearing or cutting the fingers or the hands of a user.

According to one embodiment of the articulation points 37 and 38 illustrated in Figure 3 , the first articulation points 37, 38 are supported by appendages 15 fixed on the face facing the support 5 in the table position of the plate 3, that is to say the lower / rear face 3b of the plate 3. Although all the appendages 15 fixed to the rear / lower face 3b of the plate 3 perform the same function by each supporting an articulation point 37 or 38, the appendages 15 are not necessarily all identical to one another.

According to an embodiment of the appendages 15 illustrated in Figure 3 , an appendage 15 supporting an articulation point 37 for the first link 7 has for example a straight blade shape projecting in a direction perpendicular to the rear / lower face 3b of the plate 3. However, an appendix 15 supporting a articulation point 38 for the second link 8 has for example a square shape which recalls the letter "L". More precisely, a first plane face of a appendix 15 in the shape of an "L" is fixed on the rear / lower face 3b of the plate 3, such that a second flat face of this appendix 15, oriented perpendicular to the first flat face of the appendix 15, protrudes along a line. direction perpendicular to the rear / lower face 3b of the plate 3 and supports an articulation point 38.

However, the length of the blade-shaped appendages 15 each supporting an articulation point 37 and the length of each second planar face of each appendage 15 supporting an articulation point 38 are substantially identical in this example. In other words, the two articulation points 37 and 38 integral with the plate 3 are located at the same distance d1 from the rear / lower face 3b of the plate 3, as illustrated for example on Figure 6 .

By combining this particular arrangement of the first articulation points 37 and 38 integral with the plate 3 with the respectively straight and angled shapes of the first link 7 and of the second link 8, the embodiment of the table-table 1 illustrated in Figure 4 allows a significant configuration of the three points of articulation 27, 37 and 38 when the plate 3 is in the table position. In this particular configuration of the components of the tilting mechanism 4, the polygon formed by the points of articulation 37, 38, 27 and 28 is a triangle in which the first and second points of articulation 37, 27 of the first link 7 and the first articulation point 38 of the second link 8 integral with the plate 3 are aligned in the table position. The articulation points 37, 27 and 38 are therefore all located at the same distance d1 from the rear / lower face 3b of the plate 3, as illustrated on Figure 6 .

The alignment of the first and second points of articulation 37, 27 of the first link 7 with the first point of articulation 38 of the second link 8 is reinforced by the straight shape of the first link 7 which then extends parallel to the opposite side of the right-angled triangle formed by the plate 22 and parallel to the plate 3 when the latter is in the table position.

In addition, the elbow 8c of the second link 8 is arranged in the extension of the appendix 15 of the first point of articulation 37 of the first link 7 ( Figure 4 ). This position of the elbow 8c of the second link 8 relative to the first point of articulation 37 of the first link 7 makes it possible to have a reference mark for marking a suitable orientation of the plate 3 with respect to the support 5 when the plate 3 is in the table position and thus testifies to the stability of the table-table 1. Indeed, if for a second link 8 having straight segments 8ac and 8bc of the same length , the elbow 8c is for example disposed between the extensions of the appendages 15 of the first point of articulation 37 and of the second point of articulation 38, this position of the elbow 8c shows an instability of the plate 3 relative to the support 5 at which it should be remedied. In addition, the segment 8bc of the second bent link 8 which is proximal to its second point of articulation 28 extends in the extension of the isosceles side furthest from the plane of symmetry P in the isosceles triangle formed by the plate 24, as shown on the Figure 4 .

According to the embodiment of table-table 1 illustrated on the Figures 3 , 4 and 5 , the second articulation point 27 of the first link 7 is surmounted by a support 11 on which the plate 3 rests in the table position. The support 11 is in particular designed to be at the same height as the appendages 15 when the plate 3 is in the table position. In order to protect the rear / lower surface 3b of the plate 3, the support 11 comprises for example a rubber protection which makes it possible to absorb the shock of the impact and to attenuate the noise generated by the impact of the plate 3 on the support 11 when the plate 3 is tilted from its table position to its table position.

In this embodiment of table-table 1, the second point of articulation 27 surmounted by a support 11 and the first point of articulation 38 supported by the appendix 15 in the shape of an “L” then serve as points of. 'support for the plate 3 which extends for example in a horizontal plane ( Figure 4 ). The forces exerted on the plate 3 are transmitted to the support 5 on the one hand by the second articulation point 27 articulating the second end 7b of the first rod 7 and on the other hand by the appendix 15 supporting the first point of articulation 38 articulating the first end 8a of the second link 8. The bent geometry of the second link 8 therefore also makes it possible to transmit the forces exerted on the plate 3 to the support 5 while ensuring the stability of the table-table 1.

The bend 8c of the second link 8 also makes it possible to have a similar stability mark in the case where the plate 3 is in the switchboard position ( Figures 5 ). Indeed, the elbow 8c of the second link 8 is aligned with the second articulation points 27 and 28 integral with the support 5 when the plate 3 is in the table position. On the Figure 5 , a dotted line retraces the alignment between the second point of articulation 27, the elbow 8c of the second link 8 and the second point of articulation 28. In this embodiment, if the elbow 8c of the second link 8 is not aligned with the second articulation points 27 and 28 integral with the support 5 when the plate 3 is in the table position, this may indicate an instability of the plate 3 relative to the support 5 to which it is necessary to remedy. This alignment also reflects the compactness of the tilting mechanism 4 in the table position of the plate 3. For visibility concerns, the alignment of the elbow 8c with the second articulation points 27 and 28 is not respected on the Figure 7 . In addition, the segment 8ac of the second angled link 8 which is proximal to its first point of articulation 38 is parallel to the plate 3, while the segment 8bc of the second angled link 8 which is proximal to its second point of articulation 28 extends parallel to the isosceles side closest to the plane of symmetry P of the isosceles triangle formed by the plate 24 ( Figure 5 ). This allows a lower edge of the plate 3 to be properly placed in the bend 8c of the second link 8. In other words, the plate 3 can be “stored” in the elbow 8c of the second link 8 when the plate 3 is in the table position.

The parallelism between the segment 8ac of the second link 8 and the plate 3 draws attention to another remarkable alignment of the switchboard position. When the plate 3 is in the switchboard position, the first points of articulation 37, 38 and the elbow 8c of the second link 8 are aligned on the line of symmetry of the support 5 In other words, the plane of symmetry P intersecting the side cross members 52 in their centers comprises a line of symmetry on which the first points of articulation 37, 38 and the elbow 8c of the second link 8 are aligned, as illustrated in figure Figure 5 . In the case where the table position of the plate 3 results in the fact that the plate 3 extends along a vertical plane, the line of symmetry is also vertical and the alignment of the first points of articulation 37, 38 and of the elbow 8c of the second link 8 is also. This alignment again reflects the compactness of the tilting mechanism 4. Furthermore, the first straight link 7 extends in the extension of the hypotenuse of the right-angled triangle formed by the plate 22 when the plate 3 is in the table position ( Figure 5 ). According to the embodiment of the first link 7 illustrated in the Figures 4 and 5 , the first link 7 bears on its face opposite the plate 3 in table position a stop 17 on which the first articulation point 38 of the second link 8 is supported in the table position. The stop 17 is configured to allow the appendix 15 supporting the first point of articulation 38 of the second link 8 to bear on the stop 17 by complementarity of shapes when the plate 3 is in the switchboard position. The stopper 17 can be configured to prevent the first articulation point 38 from moving and accidentally causing the pivoting of the second link 8. Likewise, the arrangement of the first articulation point 38 on the stopper 17 can prevent a accidental pivoting of the first link 7 around its first and second articulation points 37 and 27. The stop 17 thus makes the tilting mechanism 4 particularly stable and reliable in the switchboard position.

According to a non-illustrated embodiment of the tilting mechanism 4, the latter comprises a first link 7 and a second link 8 arranged coplanar in the second plane of symmetry P 'intersecting the connecting tubes 51 in their midpoints. The tilting mechanism 4 is then centered relative to the support 5.

According to the embodiment of the tilting mechanism 4 illustrated in the figures 1 to 6 , the tilting mechanism 4 comprises two pairs of first and second links 7, 8. The tilting mechanism 4 therefore comprises four links in all: two first links 7 and two second links 8 longer than the first links 7. The first two links rods 7 are substantially identical to each other. It is the same for the two second links 8.

The two first links 7 are for example arranged symmetrically with respect to the second plane of symmetry P 'which is perpendicular to the plate 3 of the table-table 1. It is the same for the two second links 8. More precisely, the first and second links 7 and 8 of the same pair are arranged at a lateral end of the support 5, as illustrated in Figure 3 .

In the case where the tilting mechanism 4 comprises two first links 7 and two second links 8 longer than the first links 7, four appendages 15 are arranged in a rectangular formation on the rear / lower face. 3b of plate 3, as shown in Figure 3 . The four appendages 15 are for example arranged near the edges of the plate 3. They are in particular arranged symmetrically with respect to the plane of symmetry P ′.

The table-table 1 comprises at least one elastic spring (not referenced in the figures) interposed between at least one of the links 7 or 8 and the support 5 to urge the plate 3 in the table position in order to facilitate the change of the position table in table. According to another embodiment, not illustrated, of table-table 1, the at least one elastic spring may be located at the level of the first or second articulation point 27, 28, 37, 38.

The elastic spring is for example a spiral spring with non-contiguous turns, also known under the name of torsion spring. Such an elastic spring interposed between one of the links 7 or 8 and the support 5 makes it possible to store elastic potential energy during the tilting of the plate 3 from its table position to its table position. The energy storage in the elastic spring makes it possible more particularly to reduce the energy input supplied by a user when he wishes to tilt the plate 3 from the table position to the table position. The tilting of the plate 3 is thus facilitated since part of the energy required to lift the weight of the plate 3 is supplied by the elastic spring. According to another embodiment, not illustrated, of table-table 1, the at least one elastic spring can be supplemented or replaced by at least one jack.

According to a second embodiment of the table-table 1 shown in Figure 9 , the table-table 1 comprises an additional panel 31 extending in the extension of the plate 3 when the latter is in its table position. In this second embodiment, the additional panel 31 is arranged in the support 5, it is more particularly held by the connecting tubes 51 which cover two opposite edges of the additional panel 31. The additional panel 31 is then coplanar with the first plane of symmetry P, it is therefore centered with respect to the support 5. Optionally, there may be a lateral offset of ten to thirty centimeters between the plate 3 and the additional panel 31. In this case, the plate 3 and the additional panel 31 do not are not coplanar, but can be parallel to each other. According to another embodiment of the additional panel 31, the latter is for example inclined with respect to the plate 3. The inclination between the plate 3 and the additional panel 31 for example forms an obtuse angle.

The additional panel 31 is for example a removable panel which can be mounted or dismantled in the support 5 of the table-table 1. The dimensions of the additional panel 31 are for example similar in width and thickness to those of the plate 3. The height of the additional panel 31 is in particular imposed by the distance between the connecting tubes 51, it corresponds for example to one third of the height dimension of the plate 3.

The additional panel 31 comprises for example at least one flat magnetic face configured to exert a magnetic attraction on magnetized objects, such as the flat surfaces 3a, 3b of the plate 3. Likewise, the flat face (s) of the additional panel 31 are also configured. to deposit an erasable ink there, such as the flat surfaces 3a, 3b of the plate 3.

In the embodiments of table-table 1 described here, table-table 1 is bistable. The term “bistable” is understood to mean the fact that only the “table” and “table” positions of the plate 3 are stable positions. The intermediate positions adopted by the table 3 during a tilting from its "table" position to its "table" position or vice versa are considered to be unstable in the sense that the table-table 1 is for example configured to bring the plate 3 back into the table. one of the two stable positions if the plate 3 is left to itself during its tilting movement.

If, for example, the table top 3 is not fully tilted from a stable position to its other stable position, the table-table 1 can be configured so that the table 3 assumes the closest stable position. According to a non-illustrated embodiment of table-table 1, a spring system arranged between the plate 3 and the support 5 can be provided for this purpose. Thus, if the plate 3 is for example moved away from its table position, then released before the angle formed between the plate 3 and a vertical plane exceeds a given angle threshold, for example 30 °, the spring system is configured to return tray 3 to its switchboard position. A similar reasoning applies when the plate 3 is in the table position. Table-table 1 thus presents means making it possible to ensure the security of users of table-table 1.

During a tilting of the plate 3 from the table position to the table position, the first link (s) 7 are pivoted about their second articulation point 27 integral with the support 5 and the second link (s) 8 are pivoted around their second articulation point 28 integral with the support 5. The rods 7 and 8 cause in their respective rotations the first articulation points 37 and 38 integral with the plate 3, so that the plate 3 is also driven in movement relative to the support 5. The movement of the plate 3 during a switch between the table position and the table position is more particularly illustrated on the Figure 8 . The Figure 8 includes a set of images illustrating several intermediate positions adopted by the plate 3 during its tilting. In the second photograph, the distance e1 between the first articulation points 37 and 38 integral with the plate 3, the distance e2 between the second articulation points 27 and 28 integral with the support 5, the length 11 separating the articulation points 27, 37 of the first link 7 and the length l2 separating the articulation points 28, 38 of the second link 8 are reported. To authorize the tilting of the plate 3 between its table position and its table position, the cumulative distance of the arrow representing l1 with the arrow representing e2 is greater than the cumulative distance of the arrow representing e1 with the arrow representing 12. This makes it possible to " let pass "the first point of articulation 38 integral with the plate 3 articulating the second link 8 between the first point of articulation 37 integral with the plate 3 articulating the first link 7 and the second point of articulation 28 integral with the support 5 articulating the second link 8 during the tilting movement.

The first and second articulation points 27, 28, 37 and 38 of the tilting mechanism 4 thus define four pivot link axes making it possible to tilt the plate 3 between a table position and a table position relative to the support 5. A particularity of the tilting mechanism 4 is due to the fact that the pivot connections at the level of the second articulation points 27 and 28 integral with the support 5 are fixed while the pivot connections at the level of the first articulation points 37 and 38 integral with the plate 3 are caused to move away from the support 5 when the plate 3 is tilted from the table position to the table position or vice versa. When tilting between its extreme positions, the movement of the plate 3 is therefore not a simple rotation around a fixed axis.

The movement of the plate 3 is similar to a combination of an upward slide with a rotation. The trajectories of the free edges of the plate, that is to say the edges of the plate 3 which are perpendicular to the side rails 52 of the support 5, thus resemble portions of an eccentric ellipse and more precisely to quarters of eccentric ellipse.

According to the table position shown on the Figure 4 , the plate 3 delimits a horizontal plane located at a given distance from a horizontal ground on which the support 5 rests. When the plate 3 is in the table position, a minority portion corresponding for example to one eighth of the plate 3 is located below of the previously defined horizontal plane. Consequently, a majority portion corresponding for example to seven eighths of the plate 3 is located above this same horizontal plane. The majority portion includes the center of gravity of the plate 3 which is located substantially in the middle of the plate.

Thus the tilting mechanism 4 of the table-table 1 and more precisely the links 7 and 8 and their first and second articulation points 27, 37, 28 and 38 make it possible to tilt the plate 3 between two stable "table" positions and "Table" by guiding the table top 3 in a combined movement of rotation and sliding upwards making it possible to adapt the height of the table top 3 according to the intended use for the table-table 1. In addition, the tilting mechanism 4 is designed so that any possibility of shearing is avoided in order to ensure the safety of a user of the table-table.

Claims (12)

Table-table (1) comprising a support (5), a plate (3) and a tilting mechanism (4) interposed between the support (5) and the plate (3) to allow the tilting of the plate (3) between a table position and a table position, characterized in that the tilting mechanism (4) comprises at least a first link (7) and a second link (8), the ends (7a, 7b and 8a, 8b) of each of the links (7, 8) being articulated on the one hand respectively in first articulation points (37, 38) spaced from each other by a distance e1 and integral with the plate (3) and on the other hand respectively in second articulation points (27, 28) spaced from each other by a distance e ₂ and integral with the support (5), the first and second articulation points (37, 27) of the first connecting rod (7) being spaced from each other by a length l ₁ and the first and second articulation points (38, 28) of the second connecting rod (8) being spaced apart from one another the other of a length l ₂ , and in that the distances e ₁ , e ₂ and the lengths l ₁ , l ₂ satisfy the following relation
l ₁ + e ₂ > l ₂ + e ₁ . Table-table (1) according to Claim 1, characterized in that the first articulation points (37, 38) integral with the plate (3) are supported by appendages (15) fixed to the face (3b) of the plate ( 3) opposite the support (5) in table position and in that the first (37) and second (27) points of articulation of the first link (7) and the first point of articulation (38 ) integral with the plate (3) of the second link (8) are aligned in the table position. Table-switchboard (1) according to any one of the preceding claims, characterized in that the first link (7) is straight and in that the second link (8) is bent. Table-table (1) according to claims 2 and 3, characterized in that in the table position, the bend (8c) of the second link (8) is arranged in the extension of the appendage (15) of the first point d 'articulation (37) of the first link (7). Table-table (1) according to claims 2 and 3 or 2 and 4, characterized in that the bend (8c) of the second link (8) is aligned with the second articulation points (27, 28) integral with the support (5) when the plate (3) is in the switchboard position. Table-table (1) according to Claim 5, characterized in that in the table position, the segment (8ac) of the second bent link (8) which is proximal to its first point of articulation (38) is parallel to the plate (3). Table-table (1) according to any one of the preceding claims, characterized in that the first link (7) carries on its face opposite the plate (3) in table position a stop (17) on which the first point of articulation (38) of the second link (8) is supported in the switchboard position. Table-table (1) according to any one of claims 3 to 7, characterized in that in cross section the support (5) has a generally symmetrical trapezoidal shape and in that in the table position, the first points of articulation (37, 38) and the elbow (8c) of the second link (8) are aligned on the line of symmetry of the support (5). Table-table (1) according to any one of the preceding claims, characterized in that the second articulation point (27) of the first link (7) is surmounted by a support (11) on which the plate ( 3) in table position. Table-table (1) according to any one of the preceding claims, characterized in that it comprises two pairs of first (7) and second links (8) arranged at the lateral ends of the support (5). Table-table (1) according to any one of the preceding claims, characterized in that it comprises at least one elastic spring interposed between at least one of the links (7, 8) and the support (5) to urge the table top (3) in table position in order to facilitate the change from table to table position. Table-table (1) according to any one of the preceding claims, characterized in that it comprises an additional panel (31) arranged in the support (5), the additional panel (31) extending in the extension of the top. (3) when it is in a table position.

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