STRUCTURE FOR A PIECE OF FURNITURE

Abstract: The structure includes at least a vertical board (9a, 9b, 29a, 29b, 29c) forming an upright (3a, 3b, 23a, 23b, 23c), at least a horizontal board (11, 31) forming a shelf (6, 26), and support means for supporting the shelf (6, 26) on the upright (3a, 3b, 23a, 23b, 23c) at predetermined heights. The upright (3a, 3b, 23a, 23b, 23c) has at least a wavy surface in which parallel horizontal crests (12) and depressions (13) succeed each other, the support means comprising such crests (12).

Description: Structure for a piece of furniture DESCRIPTION Technical field The present invention relates to a for a piece of furniture and to a piece of furniture including that structure. Background art There are known pieces of furniture comprising one or more shelves which can be positioned at different heights on uprights provided with suitable support means. Basically, the support means must be enough strong such as to bear a shelf, including a reasonable load on the shelf. Besides it is often required that the support means allow easy positioning of the shelves, i.e. both allow a certain choice for the height where to position each shelf and allow unlimited removal and repositioning of the shelf. In general, where easy positioning is required, shelves are simple rectangular boards, while the support means are variously shaped bodies fixed to the uprights and projecting therefrom. Disclosure of the invention The object of this invention is to provide a structure for a piece of furniture and hence a piece of furniture which allow easy positioning of the shelves. Therefore, the invention relates to a structure for a piece of furniture, including at least a vertical board forming an upright, at least an horizontal board forming a shelf, and support means for supporting the shelf on the upright at predetermined heights, characterized in that the upright has at least a wavy surface in which parallel horizontal crests and depressions succeed each other, the support means comprising such crests. With this structure, each shelf is positioned on the upright by inserting the edge of the shelf in any of the depressions of the surface, with a drawer-like operation. Once inserted, the edge of the shelf rests onto the underlying crest. The support for each shelf provided by a crest of the wavy surface of the upright is particularly strong, since it is not confined to a number of points but rather it is extended to the whole length of the edge of the shelf. Moreover, the easy positioning of the shelf is ensured by the very simple drawer-like operation for inserting and removing it, as well as by the very high number of positions available for the height of each shelf. In a piece of furniture, each upright may support shelves on one side only or on both sides. Thus, preferably, both surfaces of the upright are equally wavy, the vertical board being itself wavy as a whole, shaped according to a succession of waves. This allows to use the upright in case support of shelves either on only one side or on both sides is required. Moreover, shaping a whole board according to a wave is in general simpler than shaping only one surface thereof. In fact, with most materials a wavy board can be obtained by deformation of a flat board, while obtaining only a wavy surface and leaving the.other surface flat generally requires machining of the board, by milling or the like. The shelf can rest directly onto the crest of the upright . Preferably, however, the shelf is provided with a bearing gasket along its edge intended to be supported by the crests of the upright. The gasket can perform several useful tasks, such as to ensure high friction and avoid slipping, or to conform the shelf to the exact shape of the wave without having to shape the edge of the shelf itself, or to smooth the contact between the shelf and the upright, or even to avoid direct contact between the upright and the shelf if such a contact can cause problems. In a particularly interesting embodyment of the invention, the vertical and horizontal boards are made of glass and the bearing gasket is made of a resilient material - preferably transparent - adhered to the edge of the board. In fact, in case of pieces of furniture integrally made with glass, the invention allows to have effective support means without having to introduce support elements of different material, which would affect the aestetic impact of the whole-glass structure. The resilient gasket (which is practically invisible if made with transparent material such as silicone rubber or the like) avoids possible damages to the glass even when the shelf is handled without care. A structure according to the invention can be advantageously used for making various pieces of furniture, in which there are several uprights and shelves. Not necessarily all of the uprights are made according to the invention, it being well possible to have in the same piece of furniture uprights according to the invention and conventional uprights. In a specific aspect, the invention relates to a piece of furniture, including a base, a top, at least two vertical boards forming respective uprights fixed to the base and the top, at least an horizontal board forming a shelf, and support means for supporting the shelf on the uprights at predetermined heights, characterized in that the uprights have wavy opposing surfaces in which parallel horizontal crests and depressions succeed each other, the support means comprising such crests. Preferably, both surfaces of the uprights are equally wavy, the vertical boards being itself wavy as a whole, shaped according to a succession of waves. Preferably, the shelf is provided with bearing gaskets along its edges intended to be supported by the crests of the uprights. Preferably, the vertical and horizontal boards are made of glass and the bearing gaskets are made of a resilient material adhered to the edges of the board. Brief description of drawings Figure 1 is a perspective view of a piece of furniture - namely a bookcase - according to the invention. Figure 2 is an enlarged scale pespective view of a detail of the bookcase of figure 1. Figura 3 is a front view of the detail of figure 2. Figures 4 to 6 show the same detail in three alternative embodiments. Figure 7 is a perspective view of another piece of furniture - again a bookcase - according to the invention. Modes for carrying out the invention A piece of furniture 1, in particular a bookcase, includes an horizontal base 2 intended to rest on a floor, two vertical uprights 3a and 3b, a top 5 and some shelves 6. The uprights 3a and 3b are fixed to the base 2 and to the top 5 so as to form a solid body. Optionally, the piece of furniture may include also a back 7 and a front door 8. The uprights 3a and 3b comprise respective vertical boards 9a and 9b and each shelf comprises a respective horizontal board 11, the indications vertical and horizontal being referred to the normal position of use of the piece of furniture 1. The vertical boards 9a and 9b of the uprights 3a and 3b are wavy, i.e. are shaped according to a succession of waves including crests and depressions. More precisely, the surface of the board 9a opposing the board 9b and correspondingly the surface of the board 9b opposing the board 9a are provided with parallel horizontal crests - all indicated with 12 - and depressions - all indicated with 13 - which succeed each other. The indication "crest" or "depression" is referred to a specific surface or side of the board, being clear that where there is a crest on a side of a board there is a depression on the other side of the same board. The shape of the wavy boards 9a and 9b is preferably that of a sinusoidal wave, having a pitch of 40 to 80 mm. The waves of the two uprights 3a and 3b are in phase opposition, i.e. the crests 12 of the board 9a facing the board 9b are at the same height as the crests 12 of the board 9b facing the board 9a, as well as the depressions 13 of the board 9a facing the board 9b are at the same height as the depressions 13 of the board 9b facing the board 9a. The wavy shape of the boards 9a and 9b, and in particular the crests 12, operate as support means for the shelves 6, whose horizontal boards 11 have width which is greater than the free width between two opposing crests 12 and smaller than the free width between two opposing depressions 13. In this way, the shelves 6 can be inserted in the depressions 13, being supported by the crests 12 in correspondence of edges 14 of the boards 11. The edges 14 are advantageously provided with bearing gaskets 15, made of resilient material such as silicone rubber or the like. Gaskets 15 are fixed to the boards by gluing or the like. In the preferred embodiment shown in figures 1 to 3, the edges 14 of the boards 11 are bevelled, to give a better resting on the inclined surface of the crests 12. In this case, the gasket 15 has an inclined section, matching the inclination of the edges 14 and the crests 12. Alternatively, in a second embodiment shown in figure 4, the edges 14 ' have no bevelling and are provided with gaskets 15 ' having triangular or trapezoidal section. Shaping of the board 11 is simpler, but support may be not enough strong. A third embodiment shown in figure 5 provides for the same shape for the edges 14' ' , i.e. without bevelling, while the gaskets 15' ' have the shape of a circular segment, thus allowing positioning of the shelf 6 about the middle of the depression 13. Such positioning may be more stable, although removal and repositioning of the shelf become more difficult. In a fourth embodiment shown in figure 6 the edges 14 ' ' ' are rounded; the gaskets 15 ' ' ' have an arcuate shape, to match the edges 14 ' ' ' and the crests 12. Also in this case, the shelf 6 is positioned about the middle of the depression 13. This embodiment is substantially equivalent to the previous one, with a more complicated shaping of the board 11. Another piece of furniture is shown at 21 in figure 7. The piece of furniture 21 (again a bookcase) includes an horizontal base 22 intended to rest on a floor, three vertical uprights 23a, 23b and 23c, a top 25 and some shelves 26. The uprights 23a, 23b and 23c are fixed to the base 22 and to the top 25 so as to form a solid body. Uprights 23a, 23b and 23c have the same characteristics as uprights 3a and 3b of the piece of furniture 1, i.e. comprise wavy vertical boards 29a and 29b with crests 32 and depressions 33. Similarly, shelves 26 have the the same characteristics as shelves 6 of the piece of furniture 1, i.e. comprise rectangular horizontal boards 31. In the piece of furniture 21 it should be noted that upright 23c supports shelves 26 on both surfaces. In a piece of furniture according to the invention, support of the shelves is particularly strong, being extended to the whole length of the edges of the shelves. Besides, positioning of the shelves is very easy. Indeed, the height where to put a shelf can be selected among a very high number of possibilities, and removal and repositioning of a shelf can be easily performed with a drawer-like operation. Pieces fo furniture 1 and 21 as shown are made of glass, in the sense that all vertical and horizontal boards as well as the bases and the tops are made of glass; only gaskets are made of a transparent polimeric material, preferably silicone rubber. Manufacturing of the wavy vertical boards can be performed by starting from a flat board, laying it onto a grid formed by a succession of rods, heating it to the temperature where the glass begins to soften and to deform around the rods, and cooling it as soon as the desired shape is obtained. Fixing of the bases and tops to the uprights can be performed by tonguing and gluing In glass furniture the invention will be particularly appreciated, since it allows to avoid the use of unaesthetic joints to support the shelves.

Claims: CLAIMS 1. Structure for a piece of furniture, including at least a vertical board (9a, 9b, 29a, 29b, 29c) forming an upright (3a, 3b, 23a, 23b, 23c) , at least an horizontal board (11, 31) forming a shelf (6, 26) , and support means for supporting the shelf (6, 26) on the upright (3a, 3b, 23a, 23b, 23c) at predetermined heights, characterized in that the upright (3a, 3b, 23a, 23b, 23c) has at least a wavy surface in which parallel horizontal crests (12) and depressions (13) succeed each other, the support means comprising such crests (12) . 2. Structure according to claim 1, wherein both surfaces of the upright (3a, 3b, 23a, 23b, 23c) are equally wavy, the vertical board (9a, 9b, 29a, 29b, 29c) being itself wavy as a whole, shaped according to a succession of waves. 3. Structure according to claim 1, wherein the shelf (6, 26) is provided with a bearing gasket (15, 15', 15' ' , 15 ' ' ' ) along its edge (14, 14' , 14' ' , 14' " ') intended to be supported by the crests (12) of the upright (3a, 3b, 23a, 23b, 23c) . 4. Structure according to claim 3, wherein the vertical (9a, 9b, 29a, 29b, 29c) and horizontal (11, 31) boards are made of glass and the bearing gasket (15, 15' , 15' ' , 15' ' ') is made of a resilient material adhered to the edge (14, 14' , 14' ' , 14' ' ') of the horizontal board (11, 31) . 5. Piece of furniture, including a base (2, 22), a top (5, 25) , at least two vertical boards (9a, 9b, 29a, 29b, 29c) forming respective uprights (3a, 3b, 23a, 23b, 23c) fixed to the base (2, 22) and the top (5, 25) , at least an horizontal board (11, 31) forming a shelf (6, 26) , and support means for supporting the shelf (6, 26) on the uprights (3a, 3b, 23a, 23b, 23c) at predetermined heights, characterized in that the uprights (3a, 3b, 23a, 23b, 23c) have wavy opposing surfaces in which parallel horizontal crests (12) and depressions (13) succeed each other, the support means comprising such crests (12) . 6. Piece of furniture according to claim 5, wherein both surfaces of the uprights (3a, 3b, 23a, 23b, 23c) are equally wavy, the vertical boards (9a, 9b, 29a, 29b, 29c) being itself wavy as a whole, shaped according to a succession of waves . 7. Piece of furniture according to claim 5, wherein the shelf (6, 26) is provided with bearing gaskets (15, 15', 15' ', 15' ' ') along its edges (14, 14', 14' ', 14' " ') intended to be supported by the crests (12) of the uprights (3a, 3b, 23a, 23b, 23c) . 8. Piece of furniture according to claim 7, wherein the vertical (9a, 9b, 29a, 29b, 29c) and horizontal (11, 31) boards are made of glass and the bearing gaskets (15, 15', 15 ' ' , 15 ' ' ' ) are made of a resilient material adhered to the edges (14, 14', 14' ' , 14 ' ' ' ) of the horizontal boards (11, 31) .

Inventors: ARAD RON, ARAD, RON
Applicants: ARAD RON, FIAM ITALIA S P A, ARAD, RON, FIAM ITALIA S.P.A.
Application year: 1995
Main classification: A47B57
IPC codes: A47B57