A TABLE EXTENSIBLE BY TURNING OVER ITS SIDE BOARDS

Abstract: A table extensible by turning over its side boards, constituted by a horizontal plane (1), having peripheral parts with upper side boards (3, 4, 5, 6) and lower side boards (30, 40, 50, 60) shaped as circle segments and a central part (7) enclosed thereby. The central part (7) is able to rotate on a base (2) and is vertically movable relative thereto by means of cam profiles (101, 102, 103, 104), which are fastened to the central part (7) between the top surface of the lower side boards and of the upper side boards, which are fastened to the central part (7). The lower side boards (30, 40, 50, 60) are joined to a frame (10), bearing down on said base (2), whilst the upper side boards (3, 4, 5, 6) are hinged to the upper side boards to be turned over outwardly.

Description: Descπption A Table Extensible by Turning over Its Side Boards Technical Field The present invention relates to a table which can be extended by turning over its side boards This table is destined in particular, although not exclusively, to use in public locales, or where\ er there is a need to match the number of places at the tables to the number of customers In general, especially at times of greater inflow of customers or during receptions or parties, much of the time taken by personnel to prepare the halls is destined to setting up tables and optimising available spaces Background Art Currently, to increase the number of persons sitting at the same table, two or more tables are moved close together Such tables are square or rectangular, since round tables cannot be set side by side, due to the lack of continuity which would be created on the horizontal planes Approaching square or rectangular tables which in public venues are usually for two or tour persons leads to the formation of elongated table sets where the people sharing the meal can only relate with those sitting next to them or at the opposite side of the table. Moreov er, when tables are simply set side by side, table furnishings are generally not very elegant, giving a sense ol patched up precanousness Another problem encountered by public locale managers is represented by the need to make some halls multi-functional, e.g. by transforming them into dining halls and dancing halls or destining them to other uses. In this case, the hall would have to be momentarily emptied by placing the tables, appropriately disassembled, in small storage spaces This is currently done only with common foldable tables, whereas it would be useful for extensible tables to be constructed as modular tables, to be disassembled or collapsed when necessary. The same needs, albeit on a reduced scale, are encountered in modern homes, generally small, w here furnishing solutions that allow to optimise space are very much sought after and appreciated Disclosure of the Invention Therefore, the present invention aims to overcome the aforementioned drawbacks In particular, a purpose of the present invention is to pro ide a table which can be transformed rapidly, in a conv enient, effective and elegant manner, making more or less ample the surface ot its hoπzontal plane. The term "hoπzontal plane" indicates the set of parts constituting the upper surface ot the table, whilst the teπn "base" indicates any structure sustaining said hoπzontal plane, for instance a column or a base conventionally provided with legs and fixed feet or equipped w ith wheels or other means for moving. It is known that this upper surface of the table must be uniformly plane, both when in a non-extended and when in an extended position Another aim of the invention is to provide a table having a hoπzontal plane with an extensible surface which can be easily disassembled until it occupies a minimal space, and reassembled when necessary. Therefore, the present invention provides a table which can be extended by turning over its side boards, constituted by a hoπzontal plane, having relativ ely movable pans, and by a base for said hoπzontal plane, which, from a general point of view, is characterised in that said parts of the hoπzontal plane compπse multiple peπpheral parts, fonned by pairs ot equal and superposed upper and lower side boards, having straight sides defining consecutively a geometπc figure, and a central part, enclosed by said peπpheral parts and having a shape complementary to the overall shape of the peπpheral parts relative to the geometric shape defined thereby: said central part of the hoπzontal plane by means of its vertical shaft being mounted so as to be able to rotate on said base and vertically movable relative thereto by means of cam profiles provided in the bottom of said central part, between the top surface of the lower side boards and the top surface of the upper boards; the peripheral parts of the hoπzontal plane being fastened to the central swivelling part according to an arc ot rotation corresponding to its vertical motion on said cam profiles. said lower side boards being joined to an underlying trame, beaπng down on said base, and constituting, together with the upper side boards, the edge ot the table in its non- extended state, said upper side boards being hinged to said lower side boards according to an axis passing along the respective straight outer sides and. when turned over outwardly about said axis by a flat angle relative to the lower side boards until beaπng down on said base, constituting the edge ot the table in its extended state Descπption ot the Drawings Further teatures and advantages of the invention shall become more readily apparent trom the detailed descπption that follows, made with l eterence to the accompanying drawings, which represent embodiments provided purely by way ot non limiting examples, in which Figure 1 is a top plan view ot a table according to the present invention in a non- extended state of its hoπzontal plane. Figure 2 is a top plan view of the hoπzontal plane ot the table of Figui e 1 in its extended state Figure 3 is a vertical lateral view ot a first pair ot legs tor a base ot a table according to the invention. Figure 4 is a vertical lateral view of a second pair ot legs for a base of a table according to the invention, - Figure 5 is a bottom plan view, in slightly enlarged scale, of the hoπzontal plane of the table of Figure 1. in an extended state. Figure 6 is a vertical lateral view of the table base with the leg pairs of Figures 3 and 4. Figure 7 is a partial lateral view of the table according to the invention, partially sectioned along the line A-A of Figure 1 , and Figure 8 is a partial lateral view of the table according to the invention partially sectioned along the line B-B of Figure 2. Description of the Illustrative Embodiment In accordance with the figures, the extensible table according to the invention is constituted by a horizontal plane, globally indicated with the reference number 1 and having various relatively movable parts, and by a base 2 for said horizontal plane. Figure 1 shows a top view of an embodiment of the table of the invention in a non- extended state. The horizontal plane 1 , which embodies the upper or bearing surface of the table, is square and it is constituted by multiple peripheral parts 3. 4, 5. 6 and by a central part 7 enclosed thereby. Each of the peripheral parts 3. 4. 5 and 6 has the shape of a circular segment having a straight outer side 80, 81. 82 and. respectively. 83 and a curved inner side 90. 91 . 92. and respectively 93 substantially coincident with the side 70, 71. 72 and. respectively 73 of the central part 7. It should be stated immediately that the surface of the horizontal plane 1 can. unlike the one shown herein, be that of another regular or irregular polygon with straight sides, whereas the part 7 can have straight instead of concave sides. Moreover, the vertices of the central part 7 can be non coincident with the vertices of the polygon of the upper surface of the horizontal plane and hence generally recessed relative to the outer perimeter thereof. The necessary condition is that the straight sides 80, 81. 82 and 83 of the upper surface of the horizontal plane 1 define consecutively a geometric figure, and the central part, enclosed by said sides, has a complementary shape to the overall shape of the peripheral parts 3. 4. 5. 6 relative to the geometric figure defined thereby. As shown in Figure 7. the peripheral parts 3. 4. 5. and 6 substantially constitute the upper side boards of the table in its non extended state of Figure 1. together with underlying identical lower side boards 30. 40. 50 and 60. The upper side boards 3. 4. 5 and 6 are joined to the lower side boards by means of hinges, for instance laminar hinges (Figure 7 shows the hinges 51. 52 and 61. 62 between the side boards 5. 50 and 6, 60). The hinges define axes of rotation substantially coinciding with the sides 80, 81 , 82, 83 of the upper side boards 3. 4. 5 and 6 and with the sides 800. 810, 820. 830 of the lower side boards 30, 40. 50 and 60. Therefore, rotating, by roughly 180° about such axes coinciding with the sides of the upper and lower side boards, the upper side boards outwardly, i.e. opposite to the central part 7 of the horizontal plane 1. one obtains the extended state of the horizontal plane l 1 shown in Figures 2 and 8. The horizontal plane is transformed from square to round. As shown in Figure 5. which is a bottom plan view of the horizontal plane, the lower side boards 30, 40, 50 and 60 are mutually joined consecutively at the vertices by means of gussets 36. 65. 54. 43. but obviously other means of junction can be provided depending on the material selected for the construction of the table. Moreover, the lower side boards are joined by a frame 10. which in the embodiment shown herein is square, but which could be different depending on the number of sides. The central part 7 presents in the lower part (Figures 5 and 7). on its diagonals, elements 74, 75, 76. 77 for engaging its lower side boards 30. 40. 50, 60 or with the related frame 10. The central part 7 of the horizontal plane 1 ( 1' in its extended state) is provided in its lower part with cam profiles generically indicated as 101 , 102. 103, 104. These profiles, generally shaped as inclined planes, are further described farther on. The central part 7 further presents a vertical shaft 1 1 destined to engage in a corresponding seat 12 obtained in the base 2. As shown in Figures 3. 4, and 6. the base 2 is constituted by two pairs of legs. appropriately shaped, fiattened. 20. 21 , joined orthogonally. In the upper part each pair of legs 20. 21 superiorly presents a profile 200, 210 for bearing the horizontal plane 1 , 1 ', and inferiorly feet 201 , 202 and 21 1 , 212. To form the base 2. the pair of legs 20 is joined to the pair of legs 21 in a form able to be disassembled. For this purpose the pair of legs 20 presents a lower central slot 203 extending to half of its height, whilst the pair of legs 21 presents an upper central slot 213 extending from the top down to half of its height. In this way, the leg pairs can be inserted one into the other with ease, creating a stable structure and be disassembled with the same ease to reduce the space taken up. Obviously, the connection of the leg pairs can be enhanced by their mutual fastening, in a conventional manner. The leg pair 20 presents superiorly the central hole 12 able to receive, vertically movable, the vertical shaft 1 1 for the rotation of the horizontal plane on the bearing profile 200. 210. Each leg pair has on its summit 200. 210 outer bearing portions 204, 205 and 214, 215 for the lower and upper side boards, intermediate lowered portions 206, 207 and 216, 21 7 for supporting the frame 10 and central portions 208, 21 8 for engagement with the bottom of the central part 7. As shown in Figures 7 and 8. the frame 10 presents at least a pair of arresting elements in the form of vertical pivot pins 13. 14 against at least one of said leg pair to limit the arc of rotation of the central part 7. as shall be explained farther on. Moreover, the frame 10 presents two pairs of latching elements with the leg pairs 20, 21. They are constituted by horizontal pivot pins 15. 16, and 17. 18 fastened projecting interiorly from the frame 10 and destined to be engaged by the rotation of the central part of the horizontal plane into through holes 219, 220 obtained symmetrically opposite in the leg pair 21 . The horizontal pivot pins 15. 16 and 17. 18 are also limit stops so they can replace in this function the aforesaid vertical planes 13, 14. The operation of the table according to the invention is as follows. When the table is in the non-extended, square state (Figures 1 , 7), the upper side boards 3, 4, 5. 6 and lower side boards 30, 40, 50. 60 of the horizontal plane 1 are superposed. The central part 7 of the horizontal plane 1. able to rotate, bears on the base 2 through the uppermost part of the inclined plane shaped cam profile 102. The position of the inclined plane is defined by the check element 13 integral with the frame 10, with which is also engaged the central part 7. In the case in which the table is of the demountable type, the presence of the latching element 1 7, also fastened to the frame 10, is advantageous. When the latching element 17 is inserted into the hole 219, this allows a stable connection between horizontal plane 1 and base 2, which allows it to be moved as a single body. When the table needs to be brought to the extended, round state (Figures 2, 8), the horizontal plane is rotated by an arc of about 45 ° clockwise relative to the position of Figure 7. The upper side boards 3, 4, 5, 6 are then turned over by 180° outwardly relative tot he central part 7 about axes substantially coinciding with their straight sides, in such a way as to bear down on the portions 204, 205, 214. 215. In the aforesaid rotation the central portion was displaced downwards thanks to the fact that the lower parts of the inclined plane profiles are the ones that interact with the portions 208. 218 of the base 2. The position of the inclined plane is defined by the check element 14 (not visible in Figure 8) integral with the frame 10. In the case in which the table is of the demountable type, the presence of the element 16. fastened to the frame 10. in such a position as to replace as a result of the 45 ° clockwise rotation the horizontal pivot pin in the same hole 219. is advantageous. In this way. a stable connection is allowed between horizontal plane 1 and base 2. even in the extended state of the horizontal plane 1 . The horizontal plane 1 thereby has a planar bearing surface both in an extended stated and in a non-extended state. To summarise, in the rotary motion of roughly 45° of the central part 7, its raising or lowering relative to the upper side boards 3. 4, 5 and 6 is obtained, along with the locking and unlocking of the horizontal plane relative to the base. It should also be observed that the table according to the invention is easily demountable by rotating its horizontal plane between the two positions described above, offset by 45 ° . In a position in which none of the latching elements of the frame 10 is latched with the base 2. the horizontal plane can be raised, fully or. by freeing at first the side boards from their engagement with the central part, and then lifting the central part from the base, by extracting the shaft 1 1 from the seat 12 thereof. The invention thus conceived can be subject to numerous modifications and variations, without thereby departing from the scope of the inventive concept. For instance, the shape of the connecting frame can be different from the one shown, and the linear actuator can be of a different type from the one described herein. Moreover, the 45 ° rotation of the central part 7 and hence of the entire horizontal plane is not constraining, because it depends on the selection of the related cam profiles.

Claims: Claims 1 A table extensible by turning over its side boards, constituted by a hoπzontal plane (1 ), having relatively movable parts, and by a base (2) for said horizontal plane, characterised in that said parts of the hoπzontal plane (1) comprise multiple peπpheral parts, formed by pairs of equal and superposed upper (3, 4, 5, 6) and lower (30, 40, 50. 60) side boards, having straight sides (80, 81, 82, 83, 800. 810, 820, 830) defining consecutively a geometric figure, and a central part (7), enclosed by said peπpheral parts and having a shape complementary to the overall shape of the peπpheral parts relative to the geometπc shape defined thereby, said central part (7) of the hoπzontal plane (1 ) by means of a vertical shaft (1 1) being mounted so as to be able to rotate on said base (2) and vertically movable relative thereto by means of cam profiles (101, 102, 103, 104) provided m the bottom of said central part (7), between the top surface of the lower side boards (30, 40, 50. 60) and the top surface of the upper boards (3, 4, 5, 6), the peπpheral parts of the hoπzontal plane (1 ) being fastened to the central part (7), able to swivel according to an arc of rotation corresponding to its vertical motion on said cam profiles (101, 102, 103, 104), said lower side boards (30, 40, 50, 60) being joined to an underlying frame (10). beaπng down on said base (2), and constituting, together with the upper side boards, the edge of the table in its non-extended state. said upper side boards (3, 4, 5, 6) being hinged to said lower side boards (30, 40, 50, 60) according to an axis passing along the respective straight outer sides (80≡800. 81 ≡ 810, 82≡820, 83 ≡ 830) and, when turned over outwardly about said axis by a flat angle relative to the lower side boards until beaπng down on said base, constituting the edge of the table m its extended state 2 An extensible table as claimed in claim 1, characteπsed in that said base (2) is constituted by two pairs of legs (20, 21), of flattened shape joined orthogonally, provided mfeπorly with feet, each pair of legs having on its summit outer portions (204, 205, 214, 215) for beaπng said lower and upper side boards, intermediate lowered portions (206, 207, 216, 217) for beaπng said frame (10) and central portions (208, 218) for engaging with the bottom of said central part (7) 5 3 An extensible table as claimed m claim 2. characteπsed in that said leg pairs (20, 21 ) are securely joined together to form said base (2) 4 An extensible table as claimed in claim 3, characteπsed in that said frame presents at least a pair of arresting elements (13, 14) against at least one of said leg pairs (21) to l o limit the arc of rotation of said central part (7) 5 An extensible table as claimed in claim 2, characteπsed m that said leg pairs (20, 21 ) are demountable and collapsible, a first (20) of said leg pairs presentmg a lower central slot (203) extending to half its height and an upper central hole (12) as a seat for the rotation 15 of said shaft (11), a second (21 ) of said leg pairs presenting an upper central slot (213) extending from above down to half its height, m such a way that the leg pairs can be inserted into each other 6 An extensible table as claimed in claim 5. cnaracteπsed in that said frame (10) 0 presents at least a pair of arresting and latching elements (16, 17) with at least one (21 ) of said leg parrs (20, 21(, to limit the arc of rotation of said central part (7) and to engage with at least one (21) of said leg pairs (20, 21) 7 An extensible table as claimed in claim 6, characteπsed in that said pair of arresting 5 and latching elements (16, 17) is constituted by pivot pins fastened infeπorly to said frame projecting parallel therefrom and destined to engage after the rotation of the central part of the hoπzontal plane in at least a through hole (219) obtained, symmetπcally opposite to at least another, in said second leg pair (21)

Inventors: GALTIERI GIUSEPPE, GALTIERI, GIUSEPPE
Applicants: GALTIERI GIUSEPPE, GALTIERI, GIUSEPPE
Application year: 2000
Main classification: A47B1
IPC codes: A47B1, A47B3