ES2285395T3 - EXTENSIBLE TABLE BOARD. - Google Patents

Abstract

A table top (2) for an extensible table comprises two external surfaces (3,4), which lie in one shared surface and form a table surface (6), said external surfaces (3,4) being able to be drawn together and parted, and a surface to be inserted (7) that can be introduced between the two external surfaces (3,4) when these are separated, and which can be positioned beneath the external surfaces (3,4), when the external surfaces (3,4) are drawn together. Connecting means (9,11) connect the two external surfaces (3,4) in a sliding manner along one direction of extension (E) to allow them bo be drawn together and separated and a mobile connecting part (14) connects the surfaces to be inserted (7) with both of the external surfaces (3,4), so that the surface to be inserted (7): A) slides along said direction of extension (E) and; B) inclines in relation to the external surfaces (3,4) around a first axis (I) that is transversal to the direction of extension (E) and basically parallel to the surface to be inserted (7) and; C) rotates around a second axis (II) that is transversal to the first axis (I) and basically normal to the surface to be inserted (7), said second axis (II) being inclinable in relation to the external surfaces (3,4) by oscillation of the surface to be inserted (7) around the first axis (I) and; D) slides along said second axis (II). <IMAGE>

Description

Extensible tabletop

The content of the present invention refers to to an extendable tabletop, particularly for tables extendable from outside, as well as to an extendable table.

Tables are known with a tabletop formed by two parts, which can be separated into a shared surface to create a space between them where to attach a surface to insert. The surface to be inserted can be a plate separated from the table or a plate connected to it and fixed in a position of resting below the tabletop that can recline from the resting position to a usable position on the tabletop between separate outer parts. Said tabletop is known from document DE-U- 85 35 142.

A known solution provides that the two pieces external, which can be separated from the tabletop are supported slidingly by a support structure that is invariable In herself. Therefore, the table legs are always at the same distance and, in the open configuration, the dashboard table, particularly the two outer pieces, protrude projecting beyond the support structure.

Apart from causing high bending of the protruding pieces of the tabletop, this leads to risk that the table overturns when it is loaded only on one side.

In addition, the support structure must comply Two functions, which are not particularly compatible: must support the tabletop and at the same time you must create the mechanism to extend or lengthen the tabletop.

A second known solution makes it easier for the own support structure is extensible, so that when the two pieces, which can be separated from the tabletop, are separate, the table legs are also separated, thus resolving the problem of excessive protruding length of the board table. In this case, however, the distance between the legs of the table increases and therefore also the bending length does not only of the centerpiece of the work board, but also that of The support structure itself. This makes it necessary to have a support structure with a high support capacity and a extension mechanism with a transverse play of movement that be as small as possible. The known solutions are mechanically complex, impractical and heavy and almost always they require the combination of various materials, for example wood and metal

Outdoor tables are also exposed to changes in temperature, sun, rain and humidity, which cause variations in the volume and deformations of the wooden parts, as well as corrosion of the metallic parts of the structures of support and extension mechanism, endangering your functioning.

The tables of synthetic material, for example of PVC, polyamide or polyethylene are much more resistant to climatic tensions, although they are subject to considerable deformations with loads due to its reduced elastic modulus.

Finally, the extendable tables of the technique above are particularly subject to scratching and deterioration of the exposed surfaces, as a result of the repeated action of the extension mechanism

The aim of the present invention is, therefore both provide a tabletop as well as a table extensible with a simplified and reliable extension mechanism, with characteristics that allow to solve the problems indicated in Reference to the prior art.

Another objective of the present invention is provide a tabletop as well as an extendable table for whose construction is particularly suitable to use a material synthetic.

These and other objectives are achieved through a tabletop according to claim 1 and a table of according to claim 13.

For a better understanding of the invention and To understand its advantages, one of its realizations, referring to the attached drawings, in the that:

Figure 1 is an exploded view of the table according to the invention;

Figures 2 to 9 are perspective views, which show the table according to the invention in different configurations during elongation;

Figure 10 is a sectional view of a table detail according to the invention;

Figure 11 is a sectional view of another table detail according to the invention.

The figures from 12A to 12D are seen in expanded perspective of some details of the drawing table one.

With reference to the drawings, a table Extensible is indicated globally with the reference number one.

The table 1 comprises a tabletop 2 with two external surfaces 3 and 4 that are located on a shared surface and form a table surface 6 on one of its upper sides 5. The external surfaces 3, 4 can be removed together to form the "closed" table surface 6 and separated from each other to create a space in which a surface 7 to be inserted can be introduced to form an "open" or extended table surface 6, 6 '
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The surface 7 to be inserted can be located also below a bottom side 8 of the surfaces external 3, 4 opposite the upper side 5 in a rest position when external surfaces 3, 4 are removed together.

The two outer surfaces 3, 4 are connected by special connection devices, which slide along an extension direction E to allow take them out together and separate them on the shared surface mentioned previously.

Preferably, the two connecting bars 9 they are arranged near two longitudinal sides 10 of the board 2 table and fixed so that they slide into guide components 11 integrally connected which are preferably formed of a single piece with external surfaces 3, 4.

According to one embodiment, two are formed. guide components 11 along each longitudinal side 10 of each outer surface 3, 4, and are spaced apart from each other and define bolt holes in which the bar 9 of relative connection

The guide bars 9 are preferably metal tubular sections, for example made of iron, which they are closed at the ends by caps 12 made of material synthetic.

The caps 12 have an protruding edge 13 which is suitable for leaning against a corresponding edge of the guide component 11 to create stop devices for the connection bar 9.

A mobile connecting piece 14 connects the surface 7 to be inserted by means of the connection bars 9 with both external surfaces 3, 4, so that with external surfaces 3, 4, separated, surface 7 to insert:

A) slides along the E direction of extension and

B) can lean over surfaces external 3, 4 around a first transverse axis I which is preferably perpendicular to the extension direction E and basically parallel to surface 7 to be inserted and

C) rotates around a second transverse axis II which is preferably perpendicular to the first axis I and normal to the surface 7 to be inserted, where the second axis II can be tilted with respect to external surfaces 3, 4 by oscillation of the surface 7 to be inserted around the first axis I and

D) slides along said second axis II.

In particular, the surface 7 to be inserted is slides along the second axis II between a retracted position, which allows the surface 7 to be inserted below the side bottom 8 of the outer surfaces 3, 4 and a position elongated, which allows surface 7 to be inserted and moved above the upper side 5 of the outer surfaces 3, 4 by on top of its table surface 5 and separated from it.

Turning surface 7 to insert around the second axis II, it is possible to orient it in a longitudinal position, which allows placing surface 7 to be inserted below the side bottom 8 of the external surfaces 3, 4, as well as in a transverse position, which allows surface 7 to be introduced insert between external surfaces 3, 4 to create the 6, 6 'table surface.

The mobile connection part 14 comprises a basic body 15 with a guide groove 16, which extends to the along the second axis II with two arms 17, which extend transversely with respect to the second axis II. A column 18 is housed in the guide groove that rotates around the second axis II and that slides along the axis. In turn, column 18 is integrally connected with surface 7 to be inserted, preferably by screws self-threaded

A sliding block 19 connects to each arm 17 rotating around the first axis I. Each block 19 of sliding defines a sliding slit 20 that engages with one of the two connecting bars 9 sliding respectively along the extension direction E.

Cavities and / or projections are formed circumferential 21 and longitudinal 22 in the guide groove 16, that interact with projections and / or longitudinal cavities 24 and corresponding circumferential 23 of column 18 for guide surface movements 7 to be inserted in relation to external surfaces 3, 4 in a controlled manner.

Projections and / or cavities 21, 22, 23, 24 mentioned above allow surface 7 to insert rotate around the second axis II only when said surface 7 a insert stops at the extracted position. This prevents the 7 surface to be inserted move, which could scratch the surface 6 table external surfaces 3, 4.

In addition, said projections and / or cavities 21, 22, 23, 24 are made to allow surface 7 to insert slide along the second axis II only when the surface 7 to be inserted is oriented in a longitudinal position or transverse and prevents this slippage during the rotation of the surface 7 to be inserted between these two positions.

Tabletop 2 also includes 25 quick hitch devices for mobile connection of the two  external surfaces 3, 4 when they are removed together and for connection of external surfaces 3, 4 separated with the surface 7 to be inserted, when it is inserted between them to create the extended table surface 6, 6 '.

Four coupling slits 26 are formed in the lower side 8 of the tabletop 2 to connect the board 2 table with a support structure 27, in particular with four legs 28, to support the tabletop 2 and form the table extensible 1.

The coupling slits 26 have a basically truncated form that is suitable for receiving a piece truncated 29 corresponding coupling of legs 28, preferably with interference.

According to one embodiment, two are connected legs 28 to each outer surface 3,4 and all four legs 28 are interconnect by means of a crossbar 30, which is extensible also along the extension direction E. The crossbar 30 of union comprises two external pieces 31 with Y-shape and one piece central 32 with an extended form that is connected so slide with both external parts 31 to allow lengthening and shortening the cross member 30. Each of the external parts 31 is mobilely connected respectively with two legs 28 and these are connected to the same surface external 3 or 4 of tabletop 3 and centerpiece 32 is telescopically connected with the two external parts 31.

Advantageously, devices of blocking, which can be operated manually to allow blocking crossbar 30 in default extension configurations.

According to one embodiment, said locking devices comprise first openings 33 that are made in each outer piece 31 and one or more second openings 34 made in the centerpiece 32 in positions such that they overlap with the first openings 33 in said extension configurations default, as well as one or more bolts 35 that can be inserted in the first and second aperture 33, 34 to prevent slippage  of the central part with respect to the external parts 33.

Each bolt 35 comprises a lever 38 of transmission, preferably made of a piece with said bolt and rotatably connected to the relative external part 31 of the union crossbar 30.

According to an embodiment shown in the drawings, bolts 35 have a tapered curved shape growing.

Advantageously, a latch is provided which it is integral with bolt 35 and is adapted to engage with a corresponding small edge 37 of the cross member 30 with a click to lock bolt 35 in its locked position.

According to one embodiment, the centerpiece 32 of the connecting cross member 30 comprises two edges 39 fixed in the opposite ends of said centerpiece 32 and adapted to engage with a corresponding edge 40 of the outer parts 31 to avoid a complete, involuntary removal of the piece central 32 of the external parts 31.

External surfaces 3, 4 and / or the surface 7 to be inserted delineate a first passage opening 41 for a umbrella stem that is aligned with a second opening 42 step created in the connecting mobile part 14, in particular in column 18, and with a third passage opening 43 created in the connecting cross member 30, in particular in its central part 32, of so that an umbrella rod inserted into said openings of step is held in several points.

The first opening 41 can be adapted to the diameter of the umbrella rod by means of inserts shaped compass of variable diameters with helical cams for allow them to be inserted by screwing them into the first opening 41 step.

Advantageously, tabletop 2 and table 1 They are made entirely of synthetic material, preferably polypropylene, except for the two connecting rods 9, which are advantageously tubular sections made of metallic material, preferably iron that can be easily protected from corrosion thanks to the continuous convexity of its surface exposed.

All tabletop and tabletop components described and shown above in drawing 1 as parts simple ones are produced separately, preferably by die casting (except for connecting rods) and can interconnect in a mobile way to allow storage and Easy and particularly practical transport.

The operation of the table according to the Invention will be described below.

The two external surfaces 3, 4 are removed together with the closed table (figure 2) and connect with the 25 quick hitch devices. The surface 7 to be inserted is oriented longitudinally and located in its resting position by under the lower side 8 of the outer surfaces 3, 4 and the union crossbar 30 appears fully shortened.

To extend the table, devices 25 of quick hitch tabletop and crossbar bolts 35 of union are released and the table extends along the direction E extraction (figure 3). In order to place the surface 7 a insert between external surfaces 3, 4 separated, it is necessary slide the surface to be inserted into the inner edge of one of the external surfaces, tilt it around the first axis I (Figures 4, 5) and slide it towards the other external surface, of so that one end of the surface to be inserted is above of the external surfaces (figure 6). At the same time, the surface to be inserted is extracted along the second axis II as to carry the second end of the surface 7 to be inserted by on the external surfaces 3, 4. Only now is it possible to do rotate to the surface to be inserted around the second axis II in its cross position (figure 7). During the rotation of the surface 7 to be inserted from a longitudinal position to a transverse position, cannot slide along the second axis II and therefore cannot descend on surface 6 of table of external surfaces 3, 4, removed in this way the risk of scratching.

When the surface to be inserted is oriented transversely (figure 8), it slides along the second axis II, as a result of its own weight, towards the bottom until it it rests on the bars 9 (figure 9) and is placed therein surface than external surfaces, which separate to the surface to be inserted and coupled to it by means of 25 quick hitch devices.

It is possible to block extended settings of the support structure using the bolts 35.

The table can be shortened in one way Similary.

The tabletop and the table according to the invention present numerous advantages. Are particularly Simple, not too difficult and reliable. The tabletop and the table according to the invention are particularly suitable to use synthetic material for its construction and present a considerable flexural strength.

The tabletop and the table extend and they shorten very easily and reduce the risk of scratching the table surface due to the action of the mechanism of extension.

Finally, thanks to the modular system and Mobile connection of the table parts, it is easy to transport and Store in limited spaces.

Clearly, the person skilled in the art you can make additional modifications and variations to the dashboard table and table according to the present invention to meet eventual, specific needs, which are also all contained within the scope of protection of the invention, as defined by the following claims.

Claims (19)

1. Tabletop (2) for an extendable table, wherein said tabletop (2) comprises: - two external surfaces (3, 4), which are located on a shared surface and form a table surface (6) on one of its upper sides (5), being able to be removed together said external surfaces (3, 4) and separated; - a surface (7) to be inserted that can enter between the two external surfaces (3, 4) when they they are separated, and that can be placed below a lower side (8) of the external surfaces (3, 4) opposite the upper side (5), when the external surfaces (3, 4) are removed together; - connection means (9, 11) connecting the two external surfaces (3, 4) in a sliding way along of an extension direction (E) to allow them to be removed together and separate into said shared surface, characterized in that the tabletop (2) comprises a movable connecting piece (14), which connects the surface (7) to be inserted by means of said connecting means (9, 11) with both external surfaces (3, 4), said said comprising mobile part (14) connection: A) means that allow the surface (7) to insert slide along said extension direction (E) Y; B) means for tilting the surface (7) a insert with respect to the external surfaces (3, 4) around a first axis (I) that is transverse to the direction (E) of extension and basically parallel to the surface (7) to be inserted; Y C) means for rotating the surface (7) a insert around a second axis (II) that is transverse to the first axis (I) and basically normal to the surface (7) to be inserted, said second axis (II) can be inclined with respect to the external surfaces (3, 4) swinging the surface (7) to insert around the first axis (I) and; D) means for sliding the surface (7) to insert along said second axis (II). 2. Tabletop (2) according to the claim 1, wherein said first axis (I) is basically perpendicular to the direction (E) of extension. 3. Tabletop (2) according to the claim 1 or 2, wherein said second axis (II) is basically perpendicular to the first axis (I). 4. Tabletop (2) according to a any of the preceding claims, wherein said surface (7) to be inserted slides along the second axis (II) between a position retracted from the surface (7) to be inserted which allows it to be located below the lower side (8) of the external surfaces (3, 4) and an elongated position of the surface (7) to be inserted, which allows it to be placed and moved by above the upper side (5) of the external surfaces (3, 4) distanced from its table surface (6). 5. Tabletop (2) according to the claim 4, comprising means for guiding movements of the surface (7) to be inserted with respect to the external surfaces (3, 4) in a controlled way, to allow it to revolve around the second axis (II) only when said surface (7) to be inserted is stops in said extracted position. 6. Tabletop (2) according to a any of the preceding claims, wherein said surface (7) to be inserted can be oriented around the second axis (II) between a longitudinal surface position (7) a insert, which allows you to place below the bottom side (8) of the external surfaces (3, 4) and a transverse position of the surface (7) to be inserted, which allows you to enter between external surfaces (3, 4). 7. Tabletop (2) according to the claim 6, comprising means for guiding movements of the surface (7) to be inserted with respect to the external surfaces (3, 4) in a controlled way to allow the surface (7) to be inserted slide along the second axis (II) only when the surface (7) to be inserted is oriented in one position longitudinal or transverse 8. Tabletop (2) according to a any of the preceding claims, wherein said connection means (9, 11) comprise two connection bars (9) fixed near two longitudinal sides (10) of the board (2) of table and slidably fixed in guide components (11), which are integrally connected with external surfaces (3, 4). 9. Tabletop (2) according to the claim 8, wherein said movable connecting part (14) understands: - a basic body (15) with a groove (16) of guide, which extends along said second axis (II) and two arms (17) extending transversely with respect to the second axis (II); - a column (18) housed in the groove (16) of guide that rotates around the second axis (II) and that slides to along the second axis (II), said column being connected integrally with the surface (7) to be inserted; - two sliding blocks (19) connected with said arms (17) rotating around the first axis (I), in which each sliding block (19) defines a slit (20) for sliding that engages with one of the two bars (9) of connection respectively in a sliding way along the extension address (E). 10. Tabletop (2) according to one of claims 5 or 7, wherein said means for guiding the surface movements (7) to be inserted in a controlled manner with respect to external surfaces (3, 4) include projections or cavities (21, 22) made in the guide groove (16), which interact with cavities and / or projections (23, 24) corresponding to column (18). 11. Tabletop (2) according to a any of the preceding claims, comprising Quick hitch devices (25) for mobile connection of two external surfaces (3, 4) when they are removed together and quick hitch devices (25) to connect surfaces external (3, 4) separated with the surface (7) to be inserted, when it is introduced between them to form a surface (6, 6 ') of table. 12. Tabletop (2) according to a any of the preceding claims, wherein said board (2) Tabletop is made entirely of synthetic material, preferably polypropylene, except the two bars (9) of connection, which are tubular sections made of metallic material, preferably iron. 13. Extending table (1), comprising a Extensible tabletop (2) according to any one of the previous claims and a support structure (27) with four legs (28), in which each of the external surfaces (3, 4) is connected with two legs (28), being interconnected the four legs (28) with a connecting cross member (30) that can extend along the extension direction (E). 14. Extending table (1) in accordance with the claim 13, wherein said connecting cross member (30) comprises  two external parts (31) connected, each connected with two legs (28) and a centerpiece (32) connected in one way Sliding with both external parts (31) to allow the crossbar of union (30) lengthen and shorten. 15. Extending table (1) in accordance with the claim 14, wherein the centerpiece (32) is connected telescopically with the external parts (31). 16. Table according to any one of the claims 13 to 15, wherein said connecting cross member (30) comprises manually operated locking means, which allow lock the cross member (30) in extension configurations predetermined 17. Extending table (1) in accordance with the claim 16, wherein said blocking means comprise a first opening (33) made in the outer part (31) and at least a second opening (34) made in the center piece (32) overlapping with the first opening (33) in said extension configurations predetermined, as well as a bolt (35) that can be inserted into the first and second openings (33, 34) to prevent slippage of the central part (32) with respect to the external part (31). 18. Extending table (1) in accordance with the claim 17, comprising means for stopping the bolt (35) in the locked position. 19. Extending table (1) according to a any one of claims 17 to 18, comprising a operating lever (38) made of a piece with said bolt (35).