Fluid passage system for tap and piece of furniture with tap provided with such system

Abstract

Fluid passage system for a piece of furniture with tap provided with an insertion seat, wherein the fluid passage system comprises an insertion element provided with a head with a mouth at a first end, a connection provided with at least one conduit connected with a coupling which is open outwardly which is placed at a second end opposite to the first end with respect to a longitudinal development of the insertion element, the fluid passage system being configured as a feeding system of the water toward the tap, the head being configured to be located vertically below with respect to the tap and in fluid connection with the fluid inlets of the tap for hot and / or cold water feed toward a mixer of the tap.

Description

[0001] DESCRIPTION

[0002] FLUID PASSAGE SYSTEM FOR TAP AND PIECE OF FURNITURE WITH TAP PROVIDED WITH SUCH SYSTEM

[0003] Technical Field

[0004] The present invention relates to a fluid passage system for a tap according to the characteristics of the pre-characterizing part of claim 1 and to a piece of furniture with tap provided with such system.

[0005] Prior art

[0006] In the field of furnishing systems, one of the most technical components is the sink system, normally composed of five elements: a piece of furniture, a basin and a fluid passage system with the function of draining the fluid from the sink to a domestic drainage system, a tap and a system for feeding hot and cold water toward the tap. The sink system can be used in different types of environments such as for example and without limitations for the purposes of the present invention, in a bathroom or in a kitchen, not excluding that the installation environment can be any environment in which a sink system can be inserted.

[0007] The sink system can be installed in various ways, such as for example and without limitations for the purposes of the present invention, built-in, supported or suspended.

[0008] The fluid passage system with a draining function consists of a drain installed on the basin, a drainage siphon and possible pipes.

[0009] The drain may be provided with a cap for closure and connection to an overflow channel for the flow of fluid from the basin if the drainage is closed with the cap and the fluid level in the basin exceeds a certain overflow level.

[0010] The fluid is generally water.

[0011] Utility model application DE 2020 / 07003360 U1 describes a sink provided with a plane, a basin and a duct for the drainage of water and its passage inside the plane. The duct has a non-round cross-sectional shape and is arranged horizontally on the plane. The duct has a joint at one end for connection to the water outlet of the basin. The duct is provided with an additional connection element for connection to an external line. The duct for connection to the basin includes a connection unit for connection to the basin.

[0012] Patent application WO 2004 / 085066A1 describes a laboratory piece of furniture comprising a worktop provided with draining grooves which are connected via a drainage channel to a compartment provided with a liquid collection tank. The drainage grooves are preferably distributed over the surface of the worktop and arranged in such a way as to provide a segmented subdivision on the worktop. WO 2004 / 085066 A1 does not provide any fluid passage system in the form of an insert applicable in a seat of the worktop and provides that the worktop includes pipes obtained directly within the thickness of the worktop suitable for the flow of fluids, without the use of an insertion element provided with a head with a liquid collection mouth at a first end and a drainage coupling which is open outwardly which is arranged at a second end opposite to the first end with respect to a longitudinal development of the insertion element.

[0013] US Patent Application 2014 / 026387 A1 describes a method and apparatus for installing a wall-mounted tap outside the wall, directly onto a bathroom washbasin piece of furniture such that the hydraulic system on the piece of furniture is not limited by the location and spacing of the piping arrangements on the wall. In this way, the hydraulic system can be installed entirely inside the modular / mobile / prefabricated bathroom washbasin piece of furniture with wall-mounted taps. US 2014 / 026387 A1 is based on the creation of an air space between the washbasin piece of furniture and the wall and the creation of an installation using known and traditional pipes which are merely concealed within the air space. US 2014 / 026387 A1 does not provide for any fluid passage system in the form of an insert applicable in a seat of the worktop and provides that the worktop includes pipes obtained directly within the thickness of the worktop suitable for the flow of fluids, without the use of an insertion element provided with a head with a liquid collection mouth at a first end and a drainage coupling open outwardly which is placed at a second end opposite to the first end with respect to a longitudinal development of the insertion element. Patent application JP 2007 / 289631 A describes a kitchen washbasin piece of furniture provided with a containing space concealed by a panel and arranged behind the piece of furniture toward the supporting wall, in which the containing space contains a known and traditional type of connection pipe for sending water toward a draining system, in which the washbasin basin is shaped with a drainage, integral with the basin itself, in which the drainage constitutes an extension conduit between the basin drain and the containing space arranged at the back. In practice JP 2007 / 289631 A describes a piece of furniture provided with a panel for hiding drainage pipes of traditional type. JP 2007 / 289631 A does not provide for any fluid passage system in the form of an insert applicable in a seat of the worktop and provides that the worktop includes pipes obtained directly within the thickness of the worktop suitable for the flow of fluids, without the use of an insertion element provided with a head with a liquid collection mouth at a first end and a drainage coupling which is open outwardly which is placed at a second end opposite to the first end with respect to a longitudinal development of the insertion element.

[0014] Patent application WO 2018 / 065355 A1 describes a system for the installation and wall mounting of a washbasin, in which fixing means are provided for fixing the washbasin to the wall and a hidden compartment for the connections of the washbasin, in which the hidden compartment has a load-bearing rear wall which is provided with a mounting guide which can be firmly anchored to the wall. The mounting guide includes the fixing means for fixing the washbasin. The hidden compartment includes connections for water feeding and water drainage and the hidden compartment is completely covered on its front side by the load-bearing rear wall of the washbasin after fixing to the wall. There is an air space below the washbasin into which a traditional drainage pipe is inserted.

[0015] Patent application US 2011 / 080076 A1 describes a washbasin piece of furniture with a drawer located below the washbasin, wherein the drawer includes a hydraulic system comprising water feeding lines and a drainage line. The hydraulic system is of the extendable type to allow the drawer to be opened and closed with corresponding extension and retraction of telescopic pipes. The washbasin bowl is mounted on the drawer and, consequently, it slides together with the drawer when the drawer is opened while the telescopic pipes simultaneously extend. US 2011 / 080076 A1 does not provide for any fluid passage system in the form of an insert applicable in a seat of the worktop and provides that the worktop includes pipes obtained directly within the thickness of the worktop suitable for the flow of fluids, without the use of an insertion element provided with a head with a liquid collection mouth at a first end and a drainage coupling which is open outwardly which is placed at a second end opposite to the first end with respect to a longitudinal development of the insertion element.

[0016] Problems of prior art

[0017] The siphon, located under the basin, is mounted coaxially to the basin drainage hole itself and occupies a significant portion of the space under the basin.

[0018] This occupied volume involves three main problems:

[0019] • the siphon with its piping is often visible and has required several design and functionality studies to hide it or make it less evident, with the consequence that there is an increase in cost compared to the pure cost of the functional component itself;

[0020] • the presence of the siphon under the upper plane of the piece of furniture which supports the basin involves a partial occupation of the containing space of the piece of furniture, limiting the possibility of storing objects and causing the presence of constraints that affect, for example, positioning and shape;

[0021] • in the case in which the piece of furniture provides for the application of a drawer or shelves in the containing compartment under the upper plane of the piece of furniture which supports the basin, elaborate work on the drawer or shelf itself becomes necessary with the creation of a slit to avoid interference with the siphon and the pipes and the application of additional elements, called siphon-savers, becomes necessary, with further increase in costs and further reduction of the space available in the containing compartment.

[0022] Further problems relate to the fact that, the siphon and the drainage pipes being inside the containing compartment as well as the pipes for feeding water toward the tap, it happens that the user, during the phases of depositing or removing objects from the compartment itself, hits the siphon or the pipes, with the consequence that loosening of the connections and joints can occur with subsequent leaks that occur only when the sink is used the next time, without the user being able to notice it immediately since the leaks occur inside the compartment of the piece of furniture which is closed by the drawers or doors. In the long run, the occurrence of such leaks can also lead to deterioration of the piece of furniture itself, detachment of the surface finishing paints, swelling of the wooden panels which compose it. This type of damage is often not repairable and requires the entire piece of furniture to be replaced.

[0023] Aim of the invention

[0024] The aim of the present invention is to provide a fluid passage system for a tap and for a piece of furniture with a tap and, consequently, a piece of furniture with a tap provided with such passage system, in which an effective hiding of the fluid passage system is allowed.

[0025] Concept of the invention

[0026] The aim is achieved with the characteristics of the main claim. The sub-claims represent advantageous solutions.

[0027] Advantageous effects of the invention

[0028] The solution according to the present invention, through the considerable creative contribution the effect of which constitutes an immediate and not negligible technical progress, presents several advantages.

[0029] The fluid passage system realized according to the present invention allows to fully exploit the compartment of the piece of furniture which is present under the upper plane of the piece of furniture that supports the sink or, in the case of embodiments of the piece of furniture in the form of a wall cabinet unit, the compartment of the piece of furniture which is present within the wall cabinet unit itself, or, in the case of embodiments of the piece of furniture in the form of a shelf, the upper plane of the shelf. Furthermore, problems related to possible hitting with the siphon or the drainage pipes during the use of the piece of furniture are completely eliminated.

[0030] Due to the fact that the compartment of the piece of furniture is not occupied by the siphon and the pipes, it is possible to use drawers and shelves without the slit to avoid interference with the siphon and the pipes, allowing a more efficient use of space and containing the costs of the piece of furniture.

[0031] Furthermore, there are also advantages from the aesthetic point of view since the fluid passage system created according to the present invention is completely hidden from view, so much so that the user is not even able to understand how the water is drained from the sink.

[0032] Definitions

[0033] The terms “upper” and “lower” refer to the direction of the force of gravity with reference to an installation position of the fluid passage system or the piece of furniture which is the one usually adopted and of immediate understanding for an expert in the sector.

[0034] The terms “front” and “rear” refer to the sides of the piece of furniture which respectively constitute a front access side and a side opposite to the front, located on the back, which is usually the side suitable for being placed next to a wall.

[0035] The term “piece of furniture with sink and / or tap” is intended to also include a sink made in the form of a suspended element for wall mounting, constituting a piece of furniture shaped in the form of a sink and possibly but not necessarily provided with a tap.

[0036] The term “piece of furniture with sink and / or tap” is intended to also include a piece of furniture in which the sink is an accessory element separate from the body of the furniture, such as in the case of a wall cabinet unit suspended above a sink underneath applied to a base of the piece of furniture resting on the floor, in which case, therefore, the furniture to which reference is made being a piece of furniture in two parts of which one part is a support base on the floor provided with a sink and the other of the parts is a wall cabinet unit provided with a tap which is placed above the support base on the floor provided with a sink.

[0037] Description of the drawings

[0038] An embodiment solution is described below with reference to the attached drawings to be considered as a non-limiting example of the present invention in which:

[0039] Fig. 1 represents a schematic exploded perspective view of a piece of furniture with a sink incorporating a fluid passage system in the form of drainage from the sink.

[0040] Fig. 2 represents a schematic perspective view of the piece of furniture with sink of Fig. 1 with some components partially assembled.

[0041] Fig. 3 represents a schematic perspective view of the piece of furniture with sink of Fig. 2 with some additional components partially assembled.

[0042] Fig. 4 represents a schematic perspective view of the piece of furniture with sink of Fig. 1 fully assembled.

[0043] Fig. 5 represents a schematic perspective view of a first embodiment of the insertion element of the fluid passage system in the form of drainage from the sink.

[0044] Fig. 6 represents a schematic perspective view of a second embodiment of the insertion element of the fluid passage system in the form of drainage from the sink.

[0045] Fig. 7 represents a schematic perspective view of a third embodiment of the insertion element of the fluid passage system in the form of drainage from the sink.

[0046] Fig. 8 represents a schematic perspective view of a fourth embodiment of the insertion element of the fluid passage system in the form of drainage from the sink.

[0047] Fig. 9 represents a schematic perspective view of a fifth embodiment of the insertion element of the fluid passage system in the form of drainage from the sink, the solutions of which are to be intended to be also applicable to the previous and subsequent embodiments.

[0048] Fig. 10 represents a schematic perspective view of a sixth embodiment of the insertion element of the fluid passage system in the form of drainage from the sink, the solutions of which are to be intended to be also applicable to the previous embodiments.

[0049] Fig. 11 represents a schematic sectional view illustrating the assembly of the fluid passage system of Fig. 10 in a piece of furniture with a sink.

[0050] Fig. 12 represents a schematic perspective sectional view illustrating the assembly of the fluid passage system in the form of drainage from the sink in a piece of furniture with a sink, in which the presence of a sink drain and an overflow channel are illustrated.

[0051] Fig. 13 represents a schematic perspective view illustrating the assembly of the fluid passage system in the form of drainage from the sink on a sink of a piece of furniture by means of a direct type connection.

[0052] Fig. 14 represents a schematic perspective view illustrating the assembly of the fluid passage system in the form of drainage from the sink on a sink of a piece of furniture by means of a connection with the interposition of a joint which can, for example, be made in the form of a drain and / or siphon.

[0053] Fig. 15 represents a schematic perspective view illustrating the assembly of the fluid passage system in the form of drainage from the sink on a sink of a piece of furniture by means of a connection with the interposition of connection and adaptation unions.

[0054] Fig. 16 represents a schematic perspective view illustrating the assembly of the fluid passage system in the form of drainage from the sink on a sink of a piece of furniture by means of a connection with a direct threaded joint.

[0055] Fig. 17 represents a schematic perspective view illustrating the assembly of the fluid passage system in the form of drainage from the sink on a sink of a piece of furniture by means of a connection with a threaded joint with the interposition of connection and adaptation unions.

[0056] Fig. 18 represents a schematic perspective view of a seventh embodiment of the insertion element of the fluid passage system in the form of drainage from the sink, the solutions of which are to be intended to be also applicable to the previous embodiments.

[0057] Fig. 19 represents a schematic perspective exploded view illustrating the arrangement of a first embodiment of a piece of furniture provided with a seat for the fluid passage system in the form of drainage from the sink.

[0058] Fig. 20 represents a schematic perspective exploded view illustrating the arrangement of a second embodiment of a piece of furniture provided with a seat for the fluid passage system in the form of drainage from the sink.

[0059] Fig. 21 represents a schematic perspective exploded view of the piece of furniture of Fig. 20 according to a different point of view.

[0060] Fig. 22 represents a schematic perspective exploded view illustrating the arrangement of a third embodiment of a piece of furniture provided with a seat for the fluid passage system in the form of a drainage from the sink.

[0061] Fig. 23 represents a schematic perspective exploded view illustrating the arrangement of a fourth embodiment of a piece of furniture provided with a seat for the fluid passage system in the form of drainage from the sink.

[0062] Fig. 24 represents a schematic perspective exploded view illustrating both an eighth embodiment of the insertion element of the fluid passage system in the form of drainage from the sink and the arrangement of a corresponding fourth embodiment of a piece of furniture provided with a seat for the fluid passage system itself.

[0063] Fig. 25 represents a schematic perspective view of the piece of furniture of Fig. 24 with some components partially assembled.

[0064] Fig. 26 represents a schematic perspective view of the piece of furniture of Fig. 25 fully assembled.

[0065] Fig. 27 represents a schematic perspective sectional view illustrating the assembly of the fluid passage system in the form of drainage from the sink on a sink with the use of a drainage drain and relative cover.

[0066] Fig. 28 represents a schematic perspective sectional view illustrating the assembly of the fluid passage system in the form of drainage from the sink on a sink with the use of a drainage drain and relative cover in which the application of a spacer is also illustrated.

[0067] Fig. 29 represents a schematic perspective sectional view illustrating a different embodiment of the fluid passage system in the form of drainage from the sink in which a portion of the same is obtained and integrated directly into a plane of the piece of furniture made of a waterproof material. Fig. 30 represents a schematic perspective view of the piece of furniture with sink and tap in which a solution for the application of tap and siphon is illustrated.

[0068] Fig. 31 represents a schematic perspective exploded view of a piece of furniture with sink made incorporating the fluid passage system in the form of drainage from the sink in which a lateral technical space is used.

[0069] Fig. 32 represents a schematic perspective view of the piece of furniture with sink (not shown) and tap in which the use of the fluid passage system made according to the present invention as a system for feeding water toward a tap is illustrated.

[0070] Fig. 33 represents a schematic perspective view illustrating a ninth embodiment of realization of the insertion element of the fluid passage system made according to the present invention, for application as a system for feeding water toward a tap, in the condition of installation on the piece of furniture.

[0071] Fig. 34 represents a schematic sectional view of the insertion element of Fig. 33 arranged on a piece of furniture.

[0072] Fig. 35 represents a schematic exploded view illustrating a tenth embodiment of insertion element of the fluid passage system made according to the present invention, for application as a system for feeding water toward a tap.

[0073] Fig. 36 represents a schematic view of the insertion element of the fluid passage system made according to the present invention in the assembled condition with a tap.

[0074] Fig. 37 represents schematically a piece of furniture incorporating two insertion elements of the fluid passage system of which one fluid passage system is used as a drainage system and the other as a system for feeding water toward a tap made according to the present invention.

[0075] Fig. 38 represents a schematic perspective view illustrating a tenth embodiment of the insertion element of the fluid passage system in the form of drainage from the sink, comprising an extendable and retractable folding portion.

[0076] Fig. 39 represents a schematic perspective view illustrating an eleventh embodiment of the insertion element of the fluid passage system in the form of drainage from the sink, comprising an extendable and retractable folding portion.

[0077] Fig. 40 represents a schematic perspective view illustrating a twelfth embodiment of the insertion element of the fluid passage system in the form of drainage from the sink, comprising an extendable and retractable folding portion.

[0078] Fig. 41 represents a schematic perspective view illustrating a thirteenth embodiment of the insertion element of the fluid passage system in the form of drainage from the sink, comprising an extendable and retractable folding portion.

[0079] Fig. 42 represents a schematic perspective view illustrating a piece of furniture with sink and tap comprising the inventive fluid passage system wherein the piece of furniture is a shelf.

[0080] Fig. 43 represents a schematic perspective exploded view illustrating a piece of furniture with a tap comprising the inventive fluid passage system in which the piece of furniture is a shelf in which the insertion seat is obtained on the upper part with respect to the piece of furniture itself.

[0081] Fig. 44 represents a schematic perspective exploded view illustrating a piece of furniture with a tap comprising the inventive fluid passage system in which the piece of furniture is a shelf in which the insertion seat is obtained below with respect to the piece of furniture itself.

[0082] Fig. 45 represents a schematic perspective view illustrating a piece of furniture with a tap comprising the inventive fluid passage system in which the piece of furniture is a wall cabinet unit.

[0083] Fig. 46 represents a schematic perspective exploded view of the piece of furniture in the form of a wall cabinet unit in Fig. 45.

[0084] Fig. 47 represents a schematic perspective view illustrating a fourteenth embodiment of the insertion element of the fluid passage system in the form of drainage from the sink, comprising a connection consisting of flexible components.

[0085] Fig. 48 represents a schematic perspective view illustrating a fifteenth embodiment of the insertion element of the fluid passage system made according to the present invention, comprising a connection consisting of flexible components.

[0086] Fig. 49 represents a schematic perspective view illustrating a different embodiment of the insertion seat of the insertion element in the case of a piece of furniture with a sink.

[0087] Fig. 50 represents a schematic perspective view illustrating a different embodiment of the insertion seat of the insertion element in the case of a piece of furniture in the form of a wall cabinet unit.

[0088] Description of the invention

[0089] The present invention relates to (Fig. 32, Fig. 33, Fig. 34, Fig. 35, Fig. 36, Fig. 37, Fig. 42, Fig. 45, Fig. 46, Fig. 48, Fig. 50) a fluid passage system (1 ) for the feeding of fluids to a tap in which the fluid passage system (1 ) is configured as an insertion element (2) for insertion into a seat (3) of a piece of furniture (10).

[0090] The invention also relates to a corresponding piece of furniture (10) with a tap (51) provided with such a system (Fig. 32, Fig. 34, Fig. 35, Fig. 36, Fig. 37, Fig. 42, Fig. 45, Fig. 46, Fig. 48, Fig. 50) according to different assembly and coupling ways which adapt to multiple conditions and situations typically present with reference to different solutions of pieces of furniture (10).

[0091] The present invention also relates to (Fig. 30, Fig. 32, Fig. 37, Fig. 42, Fig. 45) a piece of furniture (10) with sink (8) and tap (51 ) provided with the fluid passage system configured as a feeding system toward a tap and further provided with a fluid passage system configured as a drain system from the sink.

[0092] As explained, the term “furniture with sink and / or tap” is intended as also including a sink made in the form of a suspended element for wall mounting, constituting a piece of furniture shaped in the form of a sink in which the sink may have the tap as an integrated element or in which the tap is a separate element, for example mounted on the wall above with respect to the sink or on a wall cabinet unit. Furthermore, the term “piece of furniture with sink and / or tap” is intended as also including a piece of furniture in which the sink is an accessory element separate from the body of the piece of furniture, such as in the case of a wall cabinet unit suspended above an underlying sink applied to a base of the piece of furniture resting on the floor, in which case, therefore, the piece of furniture referred to is a piece of furniture in two parts, one part of which is a support base on the floor provided with a sink and the other of the parts is a wall cabinet unit provided with an integrated tap and placed on the upper part of the support base on the floor provided with a sink.

[0093] The piece of furniture (10) may be made (Fig. 1 , Fig. 2, Fig. 3), for example and without limitation for the purposes of the present invention, to comprise a body (7) composed of a pair of mutually opposed sides (12), parallel and spaced apart, which are mutually connected by means of a hiding plane (11), in this case placed on the upper part, and a base plane (14) placed on the lower part, mutually opposed, parallel and spaced apart, where the terms "upper" and "on the lower part" are referred to according to the direction of the force of gravity with reference to an installation position of the piece of furniture (10) which is the one usually adopted and of immediate understanding for an expert in the sector. The sides (12), the hiding plane (11), in this case placed on the upper part, and the base plane (14) define the body (7) with a quadrangular shape within which a containing compartment (15) is delimited. The hiding plane (11) is delimited on the upper part by an upper side (32) facing upwards and by a lower side (33) facing downwards, i.e. toward the containing compartment (15). The compartment (15) is further delimited by means of a separation-board (13) placed in correspondence (Fig. 1) with a rear side (45) or with (Fig. 31) a side (12) of the body (7) of the piece of furniture. The compartment (15) is open on a front side (44) of the body (7) of the piece of furniture for access to the compartment (15) itself. In some embodiments the separation-board (13) may be absent and the technical space may be obtained as a portion of the insertion seat (3) which will be described later in this description, as, for example, in the case of an embodiment of piece of furniture in the shape of a shelf (Fig. 42).

[0094] The terms “front” and “rear” refer to the sides of the piece of furniture (10) which respectively constitute a front access side and a side opposite to the front, located on the back, which is usually the side suitable for being placed against a wall. The compartment (15) can be provided with drawers and / or shelves, and can possibly be closed at the front by means of doors, according to solutions known to an expert in the sector. In some embodiments, exploiting the same inventive concept, the piece of furniture (10) can be made (Fig.42, Fig. 43, Fig. 44) in the form of a shelf, in this case the containing compartment being intended as consisting of the backing surface of the shelf itself, which backing plane, referring to the inventive concept of the present invention, is free of elements of hindrance to the tap. In some embodiments, exploiting the same inventive concept, the piece of furniture (10) may be made (Fig.45, Fig. 46) in the form of a wall cabinet unit, in this case the containing compartment being intended as consisting of the inside of the wall cabinet unit, which, referring to the inventive concept of the present invention, is free of elements of hindrance to the tap. It will therefore be evident that the present invention refers to a fluid passage system (1) for a piece of furniture with sink and / or tap and a piece of furniture with sink and / or tap comprising such a system, in which:

[0095] - a sink (8) and a tap (51) may be present (Fig. 30, Fig. 37, Fig. 42, Fig. 45);

[0096] - a sink (8) without tap (51 ) may be present (Fig. 4, Fig. 26, Fig. 29, Fig. 31), which is fixed to the wall separately from the piece of furniture (10), according to conventional and known solutions;

[0097] - there may be present (Fig. 46) a tap (51) without sink (8), which is a separate element with respect to the piece of furniture integrating the sink itself.

[0098] It will therefore be evident that the use of the expression "and / or" with reference to the piece of furniture with sink and / or tap must be intended as suitable to cover the different embodiments illustrated and supported by description and drawings.

[0099] In addition to the inventive solution of a feeding system of water toward a tap which allows the pipes under the tap (51) placed within the internal compartment of the piece of furniture to be completely eliminated, the piece of furniture may also incorporate a drainage system which allows the siphon and pipes under the sink (8) to be completely eliminated. In practice, a new concept of drainage is implemented made by means of the fluid passage system (1), in which the siphon is eliminated from under the sink (8) and a new fluid passage system (1 ) is used which is able to transport the drainage water exiting from (Fig. 4) a first drainage passage (18) of the sink (8), which is located below the sink (8) itself, toward a hidden area of the piece of furniture (10) in which the siphon is then installed and the necessary connections are made, in which the hidden area of the piece of furniture (10) constitutes a technical space (16) hidden from view by the separation-board (13) of the piece of furniture (10). This system is combined with a new concept of water feeding realized by means of the fluid passage system (1 ), in which the fluid passage system (1 ) is able to transport (Fig. 32, Fig. 37, Fig. 42, Fig. 46) the feeding water toward a tap (51) from a hidden area of the piece of furniture (10) in which the necessary connections are made, in which the hidden area of the piece of furniture (10) constitutes a technical space (16) which is hidden from view by the separation-board (13) of the piece of furniture (10).

[0100] As can be seen from the figures (Fig. 4, Fig. 19, Fig. 21 , Fig. 22, Fig. 23, Fig. 26) and as will be explained in the following of this description, the inventive solution allows to have a piece of furniture (10) provided with a compartment (15) and sink (8) and / or tap (51) placed on the upper part (Fig.37) or on the lower part (Fig. 45) of the piece of furniture (10), in which the piece of furniture (10) comprises a fluid passage system (1) for the drainage of the sink (8) and in which such fluid passage system (1) comprises a seat (3) obtained within the thickness of the hiding plane (11) of the body (7) of the piece of furniture (10) and further comprises an insertion element (2) housed within the seat (3), thus leaving the containing compartment (15) completely free from hindrance, with all the advantages previously described. Furthermore, the piece of furniture (10) may comprise a fluid passage system (1) for the feeding of water to a tap (51) in which such fluid passage system (1 ) comprises a seat (3) obtained within the thickness of the hiding plane (11 ) of the body (7) of the piece of furniture (10) and further comprises an insertion element (2) housed within the seat (3), thus leaving the containing compartment (15) completely free from hindrance, with all the advantages previously described.

[0101] The technical space (16) is preferably placed in correspondence with the rear side

[0102] (45) of the body (7) of the furniture (10), and is intended to be placed next to a part when the piece of furniture (10) is positioned in a usual installation position against a wall, and may be, by way of example and not limited to, a wall-hung type piece of furniture, a built-in type piece of furniture, a piece of furniture provided with feet to rest on the floor. In this way, the technical space (16) constitutes a hidden area on the rear side (45) of the body (7) of the piece of furniture (10) within which the flexible pipes can also be placed for feeding water (Fig. 30) to a tap (51) for connection with the respective inlets (53) for the feeding of fluid in the form of hot water and cold water, when the tap (51) is installed resting on the upper side (32) of the piece of furniture (10). It will be clear to an expert in the field that the tap can also be mounted overhanging and on the wall above the installation position of the piece of furniture (10) so that the pipes for feeding hot and cold water toward the tap are completely independent of the piece of furniture (10). Furthermore (Fig. 30) the technical space (16) can be used for the assembly of a siphon (52).

[0103] In general the fluid passage system (1) comprises (Fig. 1 , Fig. 12, Fig. 23, Fig. 26, Fig. 27, Fig. 28) the previously defined seat (3) obtained in the hiding plane (11 ) of the body (7) of the piece of furniture (10) and the previously defined insertion element (2) which is suitable for being inserted into the seat (3) so as to be an element hidden within the thickness (S) of the hiding plane (11 ). The insertion element (2), in general, comprises (Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Fig. 10, Fig. 18, Fig. 24) a head (4) at a first end (47), in which the head (4) is provided with a mouth (23) which is open toward the outside of the insertion element (2) for the passage of the fluid. The mouth (23) is in fluid communication, via a first opening (21 ), with a connection (5) provided with at least one internal conduit (22) for the passage of the fluid toward a coupling (6) placed at a second end (48) opposite to the first end (47) with respect to a longitudinal development of the insertion element (2). Preferably, the coupling (6) is made in the form of a pipe which develops starting from the connection (5) and which is placed (Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Fig. 24) at 90 degrees with respect to a longitudinal development of the connection (5), regardless of whether it is a feeding system of water toward a tap (51) or a drain system toward a drainage network. However, in specific cases of need, the coupling (6) may be made in the form of a pipe which develops starting from the connection (5) and which is angled according to an angulation between 0 degrees and 90 degrees with respect to a longitudinal development of the connection (5). For example (Fig. 35) the coupling (6) can be made in the form of a pipe which develops starting from the connection (5) and which is angled according to an angulation between 0 degrees and 90 degrees with respect to a longitudinal development of the connection (5), regardless of whether it is a water feeding system toward a tap (51) or a drain system toward a drainage network.

[0104] Preferably the mouth (23) placed on the head (4) at the first end (47) is oriented according to an orientation direction opposite to the orientation of the coupling (6). In other words, for example, considering the insertion element (2) placed in a horizontal condition of the connection (5), the mouth (23) will be oriented upwards while the coupling (6) will be oriented downwards, i.e. the mouth (23) and the coupling (6) are facing opposite sides of the insertion element (2) with respect to the longitudinal development of the connection (5) placed between the mouth (23) and the coupling (6). In general, for this embodiment, the mouth (23) is oriented according to an orientation direction facing the upper side (32) of the hiding plane (11) of the piece of furniture (10). The coupling (6) is open on one respective side while on the opposite side it comprises a second opening (20) which is preferably connected to a fluid distribution chamber (24). Preferably the coupling (6) is threaded for the connection of pipes, unions or flexible for the passage of the fluid thereby obtaining a fluid connection between the mouth (23) and the coupling (6) wherein the fluid connection develops through the first opening (21) in communication with the mouth (23), the internal conduit (22) to the connection (5) and the second opening (20) in communication with the coupling (6) which is open toward the outside of the insertion element (2).

[0105] Preferably the head (4) comprises a protrusion with respect to the connection (5) wherein the protrusion protrudes by a protrusion distance (D) with respect to the connection (5) and wherein the protrusion protrudes from the connection (5) in a direction opposite to the orientation of the coupling (6). Preferably the protrusion is cylindrical in shape and acts as a connection element with a corresponding first passage (18) for drainage of the sink (8). The distance of the protrusion (D), for example, may correspond to the thickness of a possible (Fig. 1) finishing coating (9) of the piece of furniture (10), which will comprise in turn a second passage (19) in such a way that the protrusion is inserted within the second passage (19) for subsequent connection with the first passage (18) for drainage of the sink (8). In cases where it is necessary to make adjustments based on the thickness of the finishing coating (9) of the piece of furniture (10), it is possible to use (Fig. 28) an internally hollow spacer (43) which is connected on one side to the protrusion of the head (4) and on the other to the first passage (18) for drainage of the sink (8). In the embodiments in which the finishing coating (9) is present, it is to be considered part of the fluid passage system (1) for carrying out the function of hiding the seat (3) and the insertion element (2) placed in the seat (3).

[0106] Depending on the embodiments, the height (H) may have different values and be subject to height constraints depending on the depth (Z) of the seat (3) and the shape of the seat (3).

[0107] It is indeed expected that the seat (3) can be obtained (Fig. 1 , Fig. 12, Fig. 19, Fig. 20) entirely within the thickness (S) of the hiding plane (11). In this case, the height (H) is lower than or equal to the depth (Z) of the seat (3).

[0108] In some embodiments (Fig. 22) the seat (3) can have a depth (Z) equal to the thickness (S) of the hiding plane (11), obtaining a through groove, as will be explained later in this description. In such a case the height (H) can be equal to the depth (Z) of the seat (3) and equal to the thickness (S) of the hiding plane (11).

[0109] In further embodiments (Fig. 49, Fig. 50), the seat (3) is composed of a first semi- seat-seat (3’) obtained on the hiding plane (11) and of a second semi-seat (3”) which is obtained on the finishing coating (9) in such a way that the first semi-seat (3’) and the second semi-seat (3”) are mutually coupled and placed one on top of the other forming the seat (3) when the finishing coating (9) is positioned in correspondence with the hiding plane (11 ). In such a case the height (H) can be greater than the thickness (S) of the hiding plane (11), while remaining lower than or equal to the depth (Z) of the seat (3), which in this case is composed of the assembly of first semi-seat (3’) and second semi-seat (3”), allowing for greater absolute height (H) values than the other solutions. It will be clear that such an embodiment can be implemented in any of the other embodiments illustrated, such as, for example, in the case (Fig. 49) of a floor-standing or suspended piece of furniture (10) with a sink (8) or, for example, in the case (Fig. 50) of a piece of furniture (10) in the form of a wall cabinet unit or of shelf with a tap (51 ).

[0110] In further embodiments, the seat (3) can be obtained entirely on the finishing coating (9), which, in such a case, coincides with the hiding plane (11).

[0111] In general, the seat (3) will have a depth (Z) such as to constitute a recess for the insertion of the insertion element (2) which has a height (H) of the connection (5) in which the height (H) is lower than or equal to the depth (Z) of the seat (3), regardless of whether:

[0112] - the seat (3) is obtained (Fig. 1 , Fig. 12, Fig. 19, Fig. 20) entirely within the thickness

[0113] (S) of the hiding plane (11 ), or

[0114] - the seat (3) is (Fig. 22) a through groove having a depth (Z) equal to the thickness (S) of the hiding plane (11 ), or

[0115] - the seat (3) is composed (Fig. 49) of a first semi-seat (3’) obtained on the hiding plane (11 ) and of a second semi-seat (3”) which is obtained on the finishing coating (9), or

[0116] - the seat (3) is obtained entirely on the finishing coating (9), which, in such a case, coincides with the hiding plane (11).

[0117] The thickness (S) of the hiding plane (11) may have, as non-limiting examples for the purposes of the present invention, values between 10 mm and 100 mm, preferably the hiding plane (11) being made in such a way as to be thin in order to obtain the desired hiding effect within a thickness such that the user does not understand how the passage of the water occurs. Consequently, preferred values are between 10 mm and 30 mm, more preferably between 15 mm and 25 mm.

[0118] For example, in the case of a thickness (S) of the hiding plane (11) equal to 18 mm, the depth (Z) of the seat (3) may be between 12 mm and 15 mm and the height (H), being lower than or equal to the depth (Z) of the seat (3), may be between 10 mm and 15 mm. As a first example, consider the case of thickness (S) of the hiding plane (11) equal to 18 mm, with depth (Z) of the seat (3) equal to 12 mm, in which case the height (H) may be between 10 mm and 12 mm. As a second example, consider the case of thickness (S) of the hiding plane (11) equal to 18 mm, with depth (Z) of the seat (3) equal to 15 mm, in which case the height (H) may be between 10 mm and 15 mm.

[0119] For example, consider the case of thickness (S) of the hiding plane (11) equal to 10 mm, with depth (Z) of the seat (3) equal to 8 mm, in which case the height (H) may be between 6 mm and 8 mm.

[0120] For example, in the case of a thickness (S) of the hiding plane (11) equal to 25 mm, the depth (Z) of the seat (3) may be between 12 mm and 22 mm and the height (H), being lower than or equal to the depth (Z) of the seat (3), may be between 10 mm and 22 mm. As a first example, consider the case of a thickness (S) of the hiding plane (11) equal to 25 mm, with a depth (Z) of the seat (3) equal to 12 mm, in which case the height (H) may be between 10 mm and 12 mm. As a second example, consider the case of a thickness (S) of the hiding plane (11) equal to 25 mm, with a depth (Z) of the seat (3) equal to 22 mm, in which case the height (H) may be between 10 mm and 22 mm.

[0121] For example, consider the case of thickness (S) of the hiding plane (11) equal to 30 mm, with depth (Z) of the seat (3) equal to 25 mm, in which case the height (H) can be between 10 mm and 30 mm.

[0122] In most cases, the pipes for drainage or feeding of water have a diameter that varies between 1 inch which corresponds to a nominal diameter of 25 mm and a section of 491 mm2and 2 inches which correspond to a nominal diameter of 50 mm and a section of 1963 mm2. However, it is also possible to find drainage elements that can have a diameter of inch which corresponds to a nominal diameter of 15 mm and a section of 177 mm2. Consequently, it is envisaged that the conduit (22), whether it is a single conduit or a conduit formed by multiple parts as in some embodiments, has a fluid passage section between 150 mm2and 2500 mm2, preferably between 177 mm2and 2000 mm2.

[0123] In general, the fluid transport can take place in a single or multiple conduit (22) that converges at one end on a water collection element or mouth (23) placed under the sink (8) and connected to a drain or to a union element with it. At the other end there is a chamber (24) or similar that can be connected to a siphon by means of the coupling (6).

[0124] The connection and the collection elements at its ends can have either a round or polygonal shape.

[0125] In a first embodiment (Fig. 5), the insertion element (2) is made in the form of a single body comprising the described configuration with the head (4) in correspondence with the first end (47), the coupling (6) placed at the second end (48) opposite to the first end (47) and the connection (5) provided with at least one internal conduit (22) which, in this case is a single channel inside the connection (5).

[0126] In a second embodiment (Fig. 6), the insertion element (2) is made in the form of a single body comprising the described configuration with the head (4) in correspondence with the first end (47), the coupling (6) placed at the second end (48) opposite to the first end (47) and the connection (5) which, in this case, is composed of a first component (5’) provided with a respective internal conduit (22) of the first component (5’), a second component (5”) provided with a respective internal conduit (22) of the second component (5”), a third component (5”’) provided with a respective internal conduit (22) of the third component (5”’), where the first component (5’), the second component (5”) and the third component (5”’) constitute three mutually parallel conduits which are in fluid connection:

[0127] - on one side with the mouth (23) through respective first openings (21) in the form of a respective first opening (21 ) for each of the three conduits;

[0128] - on the opposite side with the fluid distribution chamber (24) which is in turn in fluid communication with the coupling (6).

[0129] In general, the connection (5) is made up of an assembly of mutually parallel components (5’, 5”, 5”’) each of which is provided with a respective internal conduit (22) in which each internal conduit (22) is in fluid connection with the other internal conduits at the head (4) and at the coupling (6). This embodiment may involve the use of components (5’, 5”, 5”’) of rigid type (Fig. 6) or may involve the use of components (5’, 5”, 5”’) of flexible type (Fig. 47, Fig. 48), as will be explained later in this description.

[0130] It will be evident that there may be a different number of components, such as two components, three components, four components, etc., depending on the space available and depending on the quantity of fluid to be transported in the unit of time. Thus, it will be evident that, in general, the second embodiment may be such that the connection (5) is made up of an assembly of mutually parallel components (5’, 5”, 5”’) each of which is provided with a respective internal conduit (22) in which each internal conduit (22) is in fluid connection on one side with the mouth (23) via a respective first opening (21) and on the opposite side with a fluid distribution chamber (24) which is in turn in fluid communication with the coupling (6).

[0131] In a third embodiment (Fig. 7), the insertion element (2) is made in the form of an assembly of mutually matchable parts (5', 5", 5'"). The mutually matchable parts may be two, three or more depending on the needs or ease of manufacturing by means of machine working or extrusion or moulding processes. In one embodiment (Fig. 7), the insertion element (2) is made in the form of an assembly of three mutually matchable parts (5', 5", 5'"), of which a first part (5') comprises the head (4) of the insertion element (2), a second part (5") comprises the connection (5) of the insertion element (2) provided with the internal conduit (22), a third part (5'") comprises the coupling (6) of the insertion element (2) with the respective chamber (24). The mutual matching of the parts (5', 5", 5'") may occur according to conventional matching techniques that will be immediately evident to an expert in the sector, such as interlocking, snap-action, screw-type mutual matching mechanisms, etc. In correspondence with a first matching area between the first part (5') and the second part (5") and in correspondence with a second matching area between the second part (5") and the third part (5'") respective gaskets are preferably present.

[0132] In a fourth embodiment (Fig. 8), the insertion element (2) is made in the form of an assembly of mutually matchable parts (5', 5", 5'") in which at least one of the parts (5', 5", 5'") of the assembly of parts (5', 5", 5'") constitutes a telescopic insertion element with respect to another of the parts (5', 5", 5'") of the assembly of parts (5', 5", 5'"), such that at least one of the parts (5', 5", 5'") of the assembly of parts (5', 5", 5'") can be mutually approached or moved away following insertion or extraction from another of the parts (5', 5", 5'") of the assembly of parts (5', 5", 5'"), thereby obtaining a telescopic insertion element (2) having variable length. The telescopic function can be obtained with only two parts which can be mutually inserted and extracted telescopically. Alternatively, the telescopic function can be obtained (Fig. 8) with three parts. In this case, the insertion element (2) is made in the form of an assembly of mutually matchable parts (5', 5", 5'"), of which a first part (5') constitutes the head (4) of the insertion element (2) and a first semi-portion of the connection (5), a second part (5") constitutes a telescopic insertion element, a third part (5'") constitutes the coupling (6) of the insertion element (2) and a second semi-portion of the connection (5). In this case the first part (5') and the third part (5'") can be mutually approached or moved away following the insertion or extraction of the second part (5") with respect to the first part (5') and the third part (5'"), thus obtaining a telescopic insertion element (2) having variable length. The telescopic function obtained by means of insertion element (2) composed of an assembly of two or three or more parts (5', 5", 5'") can be useful, for example, to allow the storage of a single type of insertion elements (2) suitable for different configurations of piece of furniture (10) that can be produced by a manufacturer, or for adaptation during customized installations.

[0133] In some embodiments (Fig. 38, Fig. 39, Fig. 40, Fig. 41) of the fluid passage system (1 ) at least one longitudinal portion of the connection (5) is made in the form of an extendable and retractable folding element.

[0134] For example (Fig. 38), in a tenth embodiment, the insertion element (2) comprises an extendable and retractable folding portion placed in a position between the head (4) and the coupling (6) according to a conformation in which at least one intermediate and central portion of the connection (5) is made as an extendable and retractable folding-shaped element.

[0135] For example (Fig. 39), in an eleventh embodiment, the insertion element (2) comprises an extendable and retractable folding portion placed in a position between the head (4) and the coupling (6) according to a conformation in which at least one portion of the connection (5) is made as an extendable and retractable folding element, the folding portion extending up to a junction area with the coupling (6) in such a way that in addition to the extensibility and retractability due to the variation of the length of the connection (5), the folding portion also allows the coupling (6) to be orientated with respect to a longitudinal development of the connection (5).

[0136] For example (Fig. 40), in a twelfth embodiment, the insertion element (2) comprises an extendable and retractable folding section placed in a position between the head (4) and the coupling (6) according to a conformation in which at least one intermediate and central portion of the connection (5) is made as an extendable and retractable folding element, wherein the connection (5) is composed, similarly to (Fig. 6) the second embodiment previously illustrated, of a first component (5’) provided with a respective internal conduit (22) of the first component (5’), a second component (5”) provided with a respective internal conduit (22) of the second component (5”), a third component (5”’) provided with a respective internal conduit (22) of the third component (5”’), wherein the first component (5’), the second component (5”) and the third component (5”’) constitute three mutually parallel conduits which are in fluid connection, wherein each of the first component (5’), second component (5”) and third component (5”’) is made according to a conformation in which at least one intermediate and central portion thereof is made as an extendable and retractable folding element.

[0137] For example (Fig. 41), in a thirteenth embodiment, the insertion element (2) comprises an extendable and retractable folding portion placed in a position between the head (4) and the coupling (6) according to a conformation in which at least one intermediate and central portion of the connection (5) is made as an extendable and retractable folding element, wherein the connection (5) is composed, similarly to (Fig. 6) the second embodiment previously illustrated, of a first component (5’) provided with a respective internal conduit (22) of the first component (5’), a second component (5”) provided with a respective internal conduit (22) of the second component (5”), a third component (5”’) provided with a respective internal conduit (22) of the third component (5”’), wherein the first component (5’), the second component (5”) and the third component (5”’) constitute three mutually parallel conduits which are in fluid connection, wherein each of the first component (5’), second component (5”) and third component (5”’) is made according to a conformation in which at least one intermediate and central portion of the same is made as an extensible and retractable folding element, the folding portion extending up to a junction area with the coupling (6) in such a way that in addition to the extensibility and retractability due to the variation of the length of the connection (5), the folding portion also allows the coupling (6) to be orientated with respect to a longitudinal development of the connection (5).

[0138] In a fourteenth embodiment (Fig. 47) the insertion element (2), in the form of a drainage for sink, comprises a flexible portion placed in a position between the head (4) and the coupling (6) according to a conformation in which at least one intermediate and central portion of the connection (5) is made as a flexible element, wherein the connection (5) is composed, similarly to (Fig. 6) the second embodiment previously illustrated, by a first component (5’) provided with a respective internal conduit (22) of the first component (5’), a second component (5”) provided with a respective internal conduit (22) of the second component (5”), a third component (5”’) provided with a respective internal conduit (22) of the third component (5”’), wherein the first component (5’), the second component (5”) and the third component (5”’) constitute three mutually parallel conduits which are in fluid connection, wherein each of the first component (5’), second component (5”) and third component (5”’) is made according to a conformation in which at least one intermediate and central portion of the same is made as a flexible element. The use of flexible elements for the realization of the connection (5) allows the same to curve in a more or less accentuated way within the seat (3) obtained in the piece of furniture (10) to give the possibility of adjusting the position of the sink or tap, in this specific case of a fluid passage system (1) made in the form of a drainage for sink, allowing the possibility of adjusting the position of the sink (8). This particular solution also allows the connection (5) to be curved internally to the technical space (16) to make connections more easily. There are further advantages in relation to the availability of flexible pipes on the market which can be adapted to the purpose.

[0139] In a fifth embodiment (Fig. 9) of the insertion element (2) a variant is illustrated which must be intended as also applicable to the previous and subsequent embodiments. In the fifth embodiment (Fig. 9), the insertion element (2) is provided with one or more inspection accesses (25, 27) and respective removable closing caps (26, 28) for inspecting the inside of the insertion element (2) and for cleaning if necessary. A first inspection access (25) can, for example, be placed along the longitudinal development of the connection (5) while a second inspection access (25) can, for example, be placed at the second end (48) of the insertion element (2) for example for access to the chamber (24), if present, or at the terminal end of the connection (5) on the opposite side with respect to the first opening (21).

[0140] In a sixth embodiment (Fig. 10, Fig. 11 ) of the insertion element (2) a variant is illustrated which must be intended as also applicable to the previous and subsequent embodiments. In the sixth embodiment (Fig. 10), the insertion element (2) is provided with an adjustment system comprising a series of adjustment elements (38) which allow to adjust (Fig. 11 ) an angle (A) according to which the connection (5) is placed with respect to a horizontal axis, in order to arrange the insertion element (2) angled by an amount equal to the angle (A) to facilitate the flow of the fluid. For example, the adjustment elements (38) can be screws whose excursion is such as to cause a distancing of the connection (5) with respect to a backing surface (46) of the seat (3), more screws placed longitudinally allowing to obtain the desired angle.

[0141] Alternatively or also in combination with the sixth embodiment described above, in order to facilitate the flow of the fluid, a seventh embodiment (Fig. 18) of the insertion element (2) may be provided, which must be intended as a variant also applicable to the previous and subsequent embodiments. In this case, the conduit (22) inside the connection (5) is worked in such a way that the conduit (22) itself has a slope (P) with respect to a horizontal axis, in such a case being able to maintain the assembly of the insertion element (2) perfectly horizontal as the slope (P) is obtained internally to the same. As a non-limiting example, the slope (P) with respect to a horizontal axis may be included, in general, between 3° and 30°. In the case of embodiments in which the conduit (22) is internally smooth, the slope (P) may be included between 3° and 10°, preferably between 3° and 5°. In the case of embodiments in which the conduit (22) is internally not smooth, as in the case of a conduit (22) made in the form of a flexible corrugated element, the slope (P) may be between 3° and 30°, preferably between 3° and 15°.

[0142] In one embodiment (Fig. 1 , Fig. 2, Fig. 3, Fig. 4), the hiding plane (11 ) of the piece of furniture (7) comprises a seat (3) oriented toward the upper side (32), which is obtained completely within the thickness (S) of the hiding plane (11). The seat (3) thus comprises a backing surface (46) which delimits the seat (3) on the lower part. The backing surface (46) includes a hole (17) connecting the seat (3) and the technical space (16) so that, when the fluid passage system (1) is in the assembled condition with the insertion element (2) placed (Fig. 2) in the seat (3), the coupling (6) is in the insertion condition through the hole (17) and protrudes internally into the technical space (16) to create the connections with a siphon and / or pipes toward a drainage network. The assembly can take place, for example, by first assembling (Fig. 2) the insertion element (2) in the seat (3) with the coupling (6) in the insertion condition through the hole (17) and protruding internally into the technical space (16). In some embodiments (Fig. 35) the hole (17) can be made in the form of an open eyelet extending up to one end of the hiding plane (11) located in correspondence with the technical space (16). Subsequently (Fig. 3) the finishing coating (9) is applied, if present, ensuring that the previously described protrusion of the head (4) is inserted within the second passage (19) of the finishing coating (9). Finally (Fig. 4) the sink (8) is mounted on the finishing coating (9), if present, or directly on the body (7) of the piece of furniture, in such a way that the first passage (18) of the sink (8) is in fluid communication with the mouth (23), possibly with the interposition of appropriate gaskets between the elements according to conventional methodologies known to an expert in the sector. In this solution, the finishing coating (9), if present, covers and completely hides from view the seat (3) and the insertion element (2) which allows the fluid to be drained from the sink (8) toward the coupling (6) in the technical space (16) without occupying any space in the compartment (15) of the piece of furniture (10) and without the user being able to identify how the fluid is drained from the sink (8), the drainage system being completely hidden by the finishing coating (9) and separation-board (13) which separates the technical space (16) from the compartment (15) of the piece of furniture (10).

[0143] It will be evident that, in a preferred form of the present invention, the separationboard (13) is fixed to the body (7) of the piece of furniture (10) in a removable manner so as to allow the execution of the connections with the domestic drainage network and for inspection and cleaning if necessary, this feature not being limited to the embodiment illustrated in discussion (Fig. 1), but being common to all the embodiments illustrated below even if not explicitly described. In general, the separation-board (13) is fixed to the body (7) of the piece of furniture (10) in a removable manner or is provided with at least one removable flange for access to the technical space (16).

[0144] In addition to the solution (Fig. 1 , Fig. 19) with seat (3) oriented toward the upper side (32), it is possible to provide a further different embodiment in which (Fig. 20, Fig. 21) the hiding plane (11) of the piece of furniture (7) includes a seat (3) oriented toward the lower side (33), which is obtained completely within the thickness (S) of the hiding plane (11). The seat (3) thus includes a backing surface which delimits the seat (3) on the upper part. The backing surface, in this case, does not include the hole (17) connecting the seat (3) and the technical space (16) since the seat (3) being obtained below with respect to the hiding plane (11), it is directly connected to the technical space (16) placed behind the body (7) of the piece of furniture (10). Instead, there is a connecting duct (54), placed between the seat (3) and the upper side (32) of the hiding plane (11 ) of the body (7) of the piece of furniture (10). In this way, when the fluid passage system (1 ) is in the assembled condition with the insertion element (2) placed in the seat (3), the coupling (6) develops and protrudes internally into the technical space (16) to realize the connections with a siphon and / or pipes toward a drainage network. The previously described protrusion of the head (4), thanks to the protrusion distance (D), is in the insertion condition within the duct (54) placed between the seat (3) and the upper side (32) for connecting the mouth (23) with the first passage (18) of drainage of the sink (8). The assembly can be carried out, for example, by first mounting the insertion element (2) into the seat (3) with the coupling (6) protruding into the technical space (16) and with the head protrusion in the insertion position through the duct (54) and protruding externally with respect to the hiding plane (11) of the body (7) of the piece of furniture (10). Subsequently, the finishing coating (9) is applied, if present, ensuring that the previously described head protrusion (4) is inserted within (Fig. 20, Fig. 21 ) the second passage (19) of the finishing coating (9). Finally, the sink (8) is mounted onto the finishing coating (9), if present, or directly onto the body (7) of the piece of furniture, in such a way that the first passage (18) of the sink (8) is in fluid communication with the mouth (23), possibly with the interposition of appropriate gaskets between the elements according to conventional methodologies known to an expert in the sector. In this solution, the insertion element (2) is visible and accessible from inside the compartment (15) and the previously described solution (Fig. 9) of insertion element (2) provided with inspection accesses (25, 27) can be adopted, the insertion element (2) can be hidden in the compartment (15) for example by means of a removable hiding plate (55). Also in this case, therefore, it is possible to drain the fluid from the sink (8) toward the coupling (6) in the technical space (16) without occupying any space in the compartment (15) of the piece of furniture (10) and without the user being able to identify how the fluid is drained from the sink (8), the drainage system being completely hidden by the finishing coating (9), separation-board (13) that separates the technical space (16) from the compartment (15) of the piece of furniture (10) and removable hiding plate.

[0145] In one embodiment (Fig. 12), a drain (41) is used which comprises a respective lateral slit (49) which is in fluid connection with an overflow channel (39) for the flow of fluid from the sink (8) in the event that the drainage is closed with a cap and the fluid level in the sink (8) exceeds a certain overflow level. The overflow channel (39) is in turn connected to a slot (50) obtained on an internal part (40) of the sink (8). The overflow collection function can also be performed by the previously described spacer element (43) (Fig. 28) connecting the head (4) and the drain (41).

[0146] The drain (41), in general, can be provided with a cover (42) and a sink closing cap.

[0147] The assembly of the fluid passage system (1 ) made according to the present invention on a sink (8) of a piece of furniture (10) can be made according to different ways known as connection (Fig. 13) of direct type, connection (Fig. 14) with the interposition of a joint (29) which can, for example, be made in the form of a drain and / or siphon, connection (Fig. 15) with the interposition of connection and adaptation unions (30), connection (Fig. 16) with threaded joining (31), connection (Fig. 17) with threaded joining (31) and with the interposition of connection and adaptation unions (30).

[0148] The drain can be provided with a filter for impurities as well as the union element between the head and the drain or from the head itself. The drain, the head and the spacer between the drain and the head can be connected to each other either with mechanical systems of the threaded joint type or with blocking screws, or with snap-action or permanent joint systems such as welding or gluing.

[0149] In one embodiment (Fig. 22) the seat (3) can be a seat passing through the entire thickness (S) of the hiding plane (11). In other words, the seat (3) is made in the form of a through groove of the hiding plane (11). The groove can be closed by means of hiding panels on the lower part and by the finishing coating (9) on the upper part. In this case, it will be evident that the seat (3) has a depth (Z) equal to the thickness (S) of the hiding plane (11), obtaining said through groove. Also in this case, the height (H) of the connection (5) of the insertion element (2) is lower than or equal to the depth (Z) of the seat (3).

[0150] In one embodiment (Fig. 23) the seat (3) can be placed inclined so that a longitudinal axis (35) of the insertion element is placed according to an inclination (I) with respect to an axis (34) of the piece of furniture (10) which is a transverse axis. The inclination (I) can be selected based on the length of the insertion element (2) available and based on the distance of the first passage (18) of drainage of the sink (8). It is evident to an expert in the sector that the absolute value of the inclination (I) is not a parameter that is difficult to identify based on the requirements indicated and may, by way of a non-limiting example only, be included between 1° and 89° in such a way as to maintain the position of the hole (17) in correspondence with the technical space (16).

[0151] In one embodiment (Fig. 24, Fig. 25, Fig. 26) the fluid passage system (1) is made in a compact form with a coupling which is lateral with respect to the sink (8). This embodiment is useful in the case of transversally particularly narrow pieces of furniture (10), as it allows the sink (8) to be mounted in a position which is more rearward and closer to the technical space (16). In this case the insertion element (2) is always composed of the head (4), the connection (5) and the coupling (6). The seat (3) also maintains the same shape with the hole (17) for communication with the technical space (16). The seat (3), however, is much shorter than in the other cases illustrated and the connection (5) between the head (4) and the coupling (6) is very short, so as to minimize as much as possible the longitudinal development dimension of the insertion element (2). The coupling (6) is made in the form of a 90 degree pipe which develops from the connection (5). In general, for this embodiment, the mouth (23) is oriented according to an orientation direction corresponding to a longitudinal development direction of the connection (5) for a lateral coupling configuration to the sink (8). Unlike the other embodiments illustrated, the head (4) is shaped to be fixed laterally to the sink according to a configuration in which the mouth (23) is placed on the head (4) at the first end (47) according to an orientation direction that is 90° with respect to the orientation of the coupling (6). In other words, for example, considering the insertion element (2) placed in a horizontal condition of the connection (5), the mouth (23) will be oriented horizontally while the coupling (6) will be oriented downwards, i.e. the mouth (23) and the coupling (6) are placed at 90° with respect to each other on opposite sides of the insertion element (2) with respect to the longitudinal development of the connection (5) placed between the mouth (23) and the coupling (6). Similarly, the sink (8), instead of having a first drainage passage (18) positioned on the lower part and centrally, is provided with a first drainage passage (18) placed laterally, i.e. through the lateral wall containing the sink (8), in a condition of alignment with the bottom of the basin constituting the sink (8). In this case, to facilitate the assembly of the piece of furniture (10) and, in particular, of the sink (8), contrary to the previously illustrated embodiments, the body (7) of the piece of furniture (10) comprises (Fig. 24, Fig. 25) a first housing (37) for the insertion of the sink (8) in such a way that the sink (8), comprising the insertion element (2) already placed in the assembly condition, can be inserted and fixed on the body (7) of the piece of furniture using the first housing (37) and, at the same time, the insertion element (2) is inserted in the respective seat (3) with the coupling (6) positioned within the hole (17) for penetration into the technical space (16). Similarly, the finishing coating (9) is provided with a second housing (36) having a shape and size corresponding to the shape and size of the sink (8) so that the finishing coating (9) can be applied to the hiding plane (11 ) after the sink (8) has been assembled so that the sink (8) is inserted into the second housing (36) while the finishing coating (9) is applied above the hiding plane (11 ) of the body (7) of the piece of furniture (10).

[0152] For pieces of furniture made (Fig. 29) with waterproof materials, or in which at least the hiding plane (11 ) is made with waterproof materials, the connection (5) can be made as a direct working on the material itself, in this case, the connection (5) and the respective conduit (22) being composed of the seat (3) obtained in a waterproof material of the hiding plane (11). It will be evident to an expert in the sector that the waterproof materials suitable for the realization of a waterproof hiding plane (11) can be many, such as, by way of nonlimiting example, waterproof composite materials consisting of a mixture of at least two materials, one of which is made of resins, while the other material can be, for example, selected from mineral material, wood particles, cement, recycled paper or cellulose, aluminium trihydrate. Alternatively, the waterproof hiding plane (11) can also be made of innovative materials, provided they are waterproof, such as materials reinforced with glass fibre, such as for example porcelain stoneware reinforced with glass fibre, or quartz-based materials. In this case, necessarily, since it is the seat (3) itself that constitutes the connection (5) and the respective conduit (22), it will be evident that the seat (3) has a depth (Z) lower than and not equal to the thickness (S) of the hiding plane (11). Since the connection (5) and the respective conduit (22) are composed directly of the seat (3) itself, the fluid passage system (1) is also in this case composed of the seat (3) and the insertion element (2) according to a configuration in which:

[0153] - the seat (3) is obtained within the thickness of the hiding plane (11) of the piece of furniture (10), the seat (3) having a depth (Z) lower than and not equal to the thickness (S) of the hiding plane (11 );

[0154] - the connection (5) and the respective conduit (22) of the insertion element (2) are composed of the seat (3);

[0155] - the coupling (6) is made as an element that can be inserted into the hole (17) obtained in the seat (3) for connection with the technical space (16);

[0156] - the head (4) provided with mouth (23) is made in the form of a separate conveying element provided with the mouth (23), of the type similar to a drainage drain, in fluid communication with the first passage (18) of the sink (8) in which the head (4) is a separate element with respect to the coupling (6).

[0157] This solution is very advantageous as it is particularly economical considering the fact that for many waterproof materials usually used for the realization of the hiding plane (11) of the piece of furniture (10) it is possible to obtain the seat (3) without carrying out subsequent working but directly in the production phase of the hiding plane (11) itself. In this case, i.e. of a seat obtained within the hiding plane (11) made of a waterproof material, the seat may be an integrated seat obtained in the material and subsequently closed within the material itself by further adding of material so as to leave open only the openings that put in communication the integrated seat with the mouth (23) and the hole (17).

[0158] Although reference has always been made to a technical space (16) obtained behind the piece of furniture (10), it will be evident that (Fig. 31) the technical space (16) can also be obtained laterally in correspondence with one of the sides (12) of the piece of furniture (10), using the same hiding concept by means of a separation-board (13) between the compartment (15) and the technical space (16) placed within the volume of the body (7) of the piece of furniture.

[0159] In a further embodiment (Fig. 32, Fig. 34, Fig. 35, Fig. 36, Fig. 37), the fluid passage system (1 ) is configured as a feeding system of the water toward a tap (51) placed on the hiding plane (11 ), the head (4) being located vertically below and in fluid connection with one of the fluid inlets of the tap (51) for the feeding of hot and / or cold water toward a mixer of the tap (51).

[0160] In conclusion, the present invention relates to (Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Fig. 10, Fig. 18, Fig. 24, Fig. 32) a fluid passage system (1) for a piece of furniture (10) with a sink (8), wherein the piece of furniture (10) is provided with a body (7) with a hiding plane (11) provided with an upper side (32) and a lower side (33), the body (7) defining a containing compartment (15) open on a front side (44) of the body (7), the body (7) comprising a separation-board (13) which is placed in correspondence with a side or flank (45, 12) of the body (7), the fluid passage system (1 ) comprising an insertion element (2) provided with a head (4) with at least one mouth (23) in correspondence with a first end (47), a connection (5) provided with at least one conduit (22) connected to at least one coupling (6) which is open outwardly which is placed at a second end (48) opposite to the first end (47) with respect to a longitudinal development of the insertion element (2), the mouth (23) being in fluid communication with the conduit (22) in such a way as to define a continuous fluidic path between the coupling (6) and the mouth (23). The fluid passage system (1) further comprises a technical space (16) placed in correspondence with said side or flank (45, 12) of the body (7) in which the technical space (16) is separated from the compartment (15) by means of the separation-board (13), the fluid passage system (1 ) further comprising a seat (3, 3’, 3”) having a depth (Z), in which the seat (3) is placed at least partially within a thickness (S) of the hiding plane (11), in which the connection (5) has a height (H) lower than the depth (Z) of the seat (3) so that when the insertion element (2) is in the inserted condition within the seat (3) the connection (5) is hidden within the seat (3), the coupling (6) being protruding with respect to the connection (5) in a direction oriented toward the technical space (16) so that the coupling (6) protrudes with respect to the lower surface (33) and develops within the technical space (16) for connection to a network in a condition hidden from view, the fluid passage system (1) being placed on the body (7) in such a way as not to even partially occupy the compartment (15). In one embodiment (Fig. 1) the separation panel is placed in correspondence with a rear side (45) of the body (7) of the piece of furniture (10), the technical space (16) being placed rearward with respect to a quadrangular conformation of the body (7) of the piece of furniture (10). In one embodiment (Fig. 31) the separation panel is placed in correspondence with a side (12) of the body (7), the technical space (16) being placed laterally with respect to a quadrangular conformation of the body (7) of the piece of furniture (10).

[0161] In general, the fluid passage system (1) may further comprise a finishing coating (9) for application on the upper part of the hiding plane (11 ) for hiding of the seat (3) and of the insertion element (2) placed in the seat (3), the finishing coating (9) being selected from:

[0162] - plane finishing coating (9) in which the seat (3) is obtained (Fig. 1 , Fig. 12, Fig. 19, Fig. 20, Fig. 22) entirely within the thickness (S) of the hiding plane (11 );

[0163] - finishing coating (9) provided (Fig. 49) with a portion of the seat (3) in which a first semi-seat (3’) is obtained on the hiding plane (11 ) and a second semi-seat (3”) is obtained on the finishing coating (9) in such a way that the first semi-seat (3’) and the second semi-seat (3”) are mutually coupled and placed one on top of the other forming the seat (3) when the finishing coating (9) is positioned in correspondence with the hiding plane (11), the depth (Z) of the seat (3) corresponding to the sum of the depth of the first semi-seat (3’) and the depth of the second semi-seat (3”), in such a way that the insertion element (2) is positioned in an insertion condition within the seat (3) composed of the assembly of first semi-seat (3’) and second semi-seat (3”) mutually coupled.

[0164] As previously explained, the fluid passage system (1) can be configured as a system for draining water from the sink (8), the head (4) being located vertically below and in fluid connection with a first drainage passage (18) of the sink (8) for connection by means of the coupling (6) to a water drainage network. Furthermore, the fluid passage system (1) can be configured as a system for feeding water toward a tap (51) placed on the hiding plane (11), the head (4) being located vertically below and in fluid connection with one of the fluid inlets of the tap (51 ) for feeding hot and / or cold water toward a mixer of the tap (51 ).

[0165] As previously explained, the fluid passage system (1) can be configured (Fig. 32, Fig. 34, Fig. 35, Fig. 36, Fig. 37) as a feeding system of the water toward a tap (51) placed on the hiding plane (11), the head (4) being located vertically below and in fluid connection with one of the fluid inlets of the tap (51) for the feeding of hot and / or cold water toward a mixer of the tap (51 ), the coupling (6) being composed of a first coupling (6’) for the feeding of hot water and a second coupling (6”) for the feeding of cold water, the mouth (23) being composed of a first mouth (23’) for the feeding of hot water and a second mouth (23”) for the feeding of cold water.

[0166] In this case (Fig. 32, Fig. 34, Fig. 35, Fig. 36, Fig. 37), the fluid passage system (1) configured as a feeding system of the water toward a tap (51) comprises a conduit (22) composed of two pipes inside the connection (5) in which each of the pipes consists of holes made from the solid inside the connection (5), a first internal pipe being in fluid connection with the first mouth (23”) for hot water feeding and with the first coupling (6”) for hot water feeding, a second internal pipe being in fluid connection with the second mouth (23”) for cold water feeding and with the second coupling (6”) for cold water feeding.

[0167] In one embodiment (Fig. 35, Fig. 36), the insertion element (2) of the fluid passage system (1) configured as a feeding system of the water toward a tap (51) further comprises a fixing system (56, 57, 58, 59) of the tap (51) in which the fixing system of the tap (51) is integrated into the fluid passage system (1). The fixing system (56, 57, 58, 59) of the tap (51) comprises an insertion tunnel (60) for insertion of a pushing element (56) in which the insertion tunnel (60) is obtained internally with respect to the insertion element (2) and is placed between said first internal pipe and said second internal pipe in a parallel condition with respect to said first internal pipe and said second internal pipe, the insertion tunnel (60) being in connection with the exterior of the insertion element (2) by means of a first insertion passing-through cut-out placed between the first coupling (6’) and the second coupling (6”), the insertion tunnel (60) being in connection with the exterior of the insertion element (2) by means of a second passing-through cut-out placed between the first mouth (23’) and the second mouth (23”), the fixing system (56, 57, 58, 59) further comprising an adjustment screw (59) and a wedge (58) provided with a threaded hole (61) in which the wedge (58) is inserted into the second cut-out with an inclined end of the pushing element (56) according to a configuration in which when the pushing element (56) is in inserted condition within the insertion tunnel (60) the inclined end of the pushing element (56) is in contact with a corresponding inclined counter-surface of the wedge (58), in such a way that following screwing of the screw (59) on a corresponding bolt (57), the screw (59) applies a pushing force on the pushing element (56) and on the respective inclined surface of the pushing element (56) with consequent traction of the wedge (58) inwardly with respect to the insertion tunnel (60) and corresponding fixing traction of the tap (51) which is fixed to the wedge (58) by means of a threaded bar (62) screwed on the threaded hole (61) of the wedge (58).

[0168] In a fifteenth embodiment (Fig. 48) of the insertion element (2) of the fluid passage system (1) made according to the present invention and in the form of a feeding system of fluid toward a tap, it comprises a flexible portion placed in a position between the head (4) and the coupling (6) according to a conformation in which at least one intermediate and central portion of the connection (5) is made as a flexible element, in which the coupling (6) is composed of a first coupling (6') for feeding hot water and a second coupling (6") for feeding cold water, the mouth (23) being composed of a first mouth (23') for feeding hot water and a second mouth (23") for feeding cold water, the fluid passage system (1) configured as a system for feeding water toward a tap (51) comprises a conduit (22) composed of a first component (5') provided with a respective internal conduit (22) of the first component (5’), a second component (5”) provided with a respective internal conduit (22) of the second component (5”), the first component (5”) constituting a first pipe in fluid connection with the first mouth (23’) for the feeding of hot water and with the first coupling (6’) for the feeding of hot water, the second component (5”) constituting a second pipe in fluid connection with the second mouth (23”) for the feeding of cold water and with the second coupling (6”) for the feeding of cold water. The use of flexible elements for the realization of the connection (5) allows the same to bend in a more or less accentuated way within the seat (3) obtained in the piece of furniture (10) to give the possibility of adjusting the position of the sink or the tap, in this specific case of a fluid passage system (1 ) made in the form of a feeding system of fluid toward a tap, allowing the possibility of adjusting the position of the tap (51). This particular solution also allows the connection (5) to be curved inside the technical space (16) to make connections more easily. There are further advantages in terms of the availability of flexible pipes on the market which are adaptable to the purpose. Specifically with regard to the feeding to the tap, for which there are two pipes, this is a configuration that in some respects is almost preferential as the system would be happier if it could still reach the tap locking system with a long Allen wrench.

[0169] The present invention also relates to a piece of furniture (10) with a sink (8), wherein the piece of furniture (10) is provided with a body (7) with a hiding plane (11), the body (7) defining a containing compartment (15) open on a front side (44) of the body (7), the body (7) comprising a separation-board (13) which is placed in correspondence with a rear side (45) of the body (7) defining a technical space (16) which is separated from the compartment (15) by means of the separation-board (13), the piece of furniture (10) being provided with at least one fluid passage system (1) comprising an insertion element (2) and a seat (3), the fluid passage system (1) defining a continuous fluidic path between a coupling (6) and a mouth (23) of the insertion element (2), wherein the fluid passage system (1) is made according to what described.

[0170] In particular, the piece of furniture (10) can be provided with a fluid passage system (1 ) which is configured as a water drainage system from the sink (8), the fluid passage system (1 ) defining a continuous fluidic path between the mouth (23) of the insertion element (2) in fluid connection with the first passage (18) for drainage of the sink (8) and the coupling (6) to a water drainage network, wherein the coupling (6) for connection to the water drainage network is placed in the technical space (16) in a condition hidden from view, the fluid passage system (1 ) being placed on the body (7) in such a way as not to even partially occupy the compartment (15).

[0171] In particular, the piece of furniture (10) can be provided with at least two of said fluid passage systems (1), each of which is configured as a feeding system of the water to the tap (51 ) located on the hiding plane (11 ) of the piece of furniture (10), a first fluid passage system (1 ) being in fluid connection with one of the fluid inlets of the tap (51 ) for the feeding of hot water by means of the respective head (4) of the first fluid passage system (1) which is in turn in fluid connection with the respective coupling (6) of the first fluid passage system (1) which is connected to a hot water feeding network, a second fluid passage system (1) being in fluid connection with the other of the fluid inlets (53) of the tap (51) for the feeding of cold water by means of the respective head (4) of the second fluid passage system (1) which is in turn in fluid connection with the respective coupling (6) of the second fluid passage system (1 ) which is connected to a cold water feeding network, each of said two fluid passage systems (1) being placed on the piece of furniture (10) in such a way that the respective couplings (6) for connection to the respective water feeding network are placed in the technical space (16) in a condition hidden from view, each of said two fluid passage systems (1) being located on the body (7) in such a way as not to even partially occupy the compartment (15). Preferably the piece of furniture (10) can be provided with a single fluid passage system (1) which is configured as a feeding system of the water toward the tap (51), the fluid passage system (1) defining a continuous fluidic path between the mouth (23, 23’, 23”) of the insertion element (2) in fluid connection with the tap (51 ) and the coupling (6, 6’, 6”) for the feeding of hot and cold water, wherein the coupling (6, 6’, 6”) is placed in the technical space (16) in a condition hidden from view, the fluid passage system (1) being located on the body (7) in such a way as not to even partially occupy the compartment (15).

[0172] In one embodiment (Fig. 42) the piece of furniture (10) comprises a fluid passage system (1) configured as a feeding system of the water toward the tap (51), where the piece of furniture (10) is a shelf (Fig. 42, Fig. 43, Fig. 44) or where the piece of furniture

[0173] (10) is a wall cabinet unit (Fig. 45, Fig. 46).

[0174] Considering the case of the piece of furniture (10) in the form of a shelf (Fig. 42, Fig. 43, Fig. 44), it will be evident to an expert in the field that the application on the shelf is functionally completely analogous to what described with respect to the case of the quadrangular piece of furniture (10) with reference to the hiding plane (11) in which, in practice, the hiding plane (11) coincides with the shelf. In this extreme case, the compartment (15) is composed of the upper side (32) of the shelf for supporting objects without any hindrance deriving from the distribution system of the water toward the tap, which is completely hidden within the thickness of the shelf. The technical space (16) is obtained directly on the back of the shelf, in correspondence with the terminal part of the seat (3). It will be evident to an expert in the sector that the application on the shelf may include the previously described variants in which:

[0175] - the seat (3) is located on the hiding plane (11) and is oriented (Fig. 43) toward the upper side (32) of the hiding plane (11);

[0176] - the seat (3) is located on the hiding plane (11) and is oriented (Fig. 44) toward the lower side (33) of the hiding plane (11).

[0177] Also in this case there may be (Fig. 43, Fig. 44) the presence of a finishing coating (9) hiding the seat (3) internally containing the fluid passage system (1).

[0178] Considering the case of a piece of furniture (10) in the form (Fig. 45, Fig. 46) of a wall cabinet unit, it will be evident to an expert in the sector that the application on the wall cabinet unit is functionally completely analogous to what described with respect to the case of the quadrangular piece of furniture (10) with reference to the hiding plane (11) in which, in practice, the hiding plane (11) coincides with the base plane (14) of the quadrangular piece of furniture (10). Therefore, the same considerations made with reference to the hiding plane (11 ) of a generic quadrangular piece of furniture apply, including the possibility of having variants in which the seat (3) is located on the hiding plane (11) and is oriented toward the upper side (32) of the hiding plane (11) made in the form of a base plane (14) of the piece of furniture (10) and variants in which the seat (3) is located on the hiding plane (11 ) and is oriented toward the lower side (33) of the hiding plane (11) made in the form of a base plane (14) of the piece of furniture (10).

[0179] The description of the present invention has been made with reference to the attached figures in a preferred embodiment of the same, but it is evident that many possible alterations, modifications and variants will be immediately clear to those skilled in the art in the light of the previous description. Thus, it should be emphasized that the invention is not limited by the previous description, and includes all alterations, modifications and variants in accordance with the attached claims.

[0180] NOMENCLATURE USED

[0181] With reference to the identification numbers shown in the attached figures, the following nomenclature has been used:

[0182] 1. Fluid passage system

[0183] 2. Insertion element

[0184] 3. Seat

[0185] 3’. First semi-seat

[0186] 3”. Second semi-seat

[0187] 4. Head

[0188] 5. Connection

[0189] 5’. First component

[0190] 5”. Second component

[0191] 5”’. Third component

[0192] 5i. First part

[0193] 5ii. Second part

[0194] 5iii. Third part

[0195] 6. Coupling

[0196] 6’ First coupling

[0197] 6”. Second coupling . Body

[0198] 8. Sink

[0199] 9. Finishing coating

[0200] 10. Piece of furniture

[0201] 11. Hiding plane

[0202] 12. Side

[0203] 13. Separation-board

[0204] 14. Base plane

[0205] 15. Compartment

[0206] 16. Technical space

[0207] 17. Hole

[0208] 18. First passage

[0209] 19. Second passage

[0210] 20. Second opening

[0211] 21. First opening

[0212] 22. Conduit

[0213] 23. Mouth

[0214] 23’. First mouth

[0215] 23”. Second mouth

[0216] 24. Chamber

[0217] 25. First inspection access

[0218] 26. First cap

[0219] 27. Second inspection access

[0220] 28. Second cap

[0221] 29. Joint

[0222] 30. Union

[0223] 31. Threaded joining

[0224] 32. Upper side 33. Lower side

[0225] 34. Axis of the piece of furniture

[0226] 35. Longitudinal axis of the insertion element

[0227] 36. Second housing

[0228] 37. First housing

[0229] 38. Adjustment element

[0230] 39. Overflow channel

[0231] 40. Internal wall

[0232] 41. Drain

[0233] 42. Cover

[0234] 43. Spacer

[0235] 44. Front side

[0236] 45. Rear side

[0237] 46. Backing surface

[0238] 47. First end

[0239] 48. Second end

[0240] 49. Slit

[0241] 50. Slot

[0242] 51. Tap

[0243] 52. Siphon

[0244] 53. Inlet

[0245] 54. Duct

[0246] 55. Plate

[0247] 56. Pushing element

[0248] 57. Bolt

[0249] 58. Wedge

[0250] 59. Screw

[0251] 60. Insertion tunnel 61. Threaded hole

[0252] 62. Threaded bar

[0253] A. Angle

[0254] H. Height I. Inclination

[0255] P. Slope

[0256] S. Thickness

[0257] Z. Depth

Claims

CLAIMS1. Fluid passage system (1) for a piece of furniture (10) provided with a tap (51) located on a hiding plane (11) comprising at least one seat (3, 3’, 3”) which is placed at least partially within a thickness (S) of the hiding plane (11), the fluid passage system (1 ) comprising an insertion element (2) for insertion into the at least one seat (3, 3’, 3”), in which the insertion element (2) is provided with a head (4) with at least one mouth (23) at a first end (47), a connection (5) provided with at least one conduit (22) connected to at least one coupling (6) which is open outwardly which is placed at a second end (48) opposite to the first end (47) with respect to a longitudinal development of the insertion element (2), the mouth (23) being in fluidcommunication with the conduit (22) in such a way as to define a continuous fluidic path between the coupling (6) and the mouth (23), characterised in that the fluid passage system (1) is configured as feeding system of the water toward the tap (51), the head (4) being configured to be located vertically below with respect to the tap (51) and in fluid connection with fluid inlets of the tap (51) for cold and / or hot water feed toward a mixer of the tap (51), the coupling (6) being composed of a first coupling (6') for hot water feeding and a second coupling (6") for cold water feeding, the mouth (23) being composed of a first mouth (23') for hot water feeding and a second mouth (23") for cold water feeding, the conduit (22) being composed of two pipes internally to the connection (5), a first internal pipe being in fluid connection with the first mouth (23') for hot water feeding and with the first coupling (6') for hot water feeding, a second internal pipe being in fluid connection with the second mouth (23") for cold water feeding and with the second coupling (6") for cold water feeding.

2. Fluid passage system (1) for a piece of furniture (10) according to the previous claim characterised in that the insertion element (2) further includes a fixing system (56, 57, 58, 59) of the tap (51 ) in which the fixing system of the tap (51 ) is integrated in the fluid passage system (1 ).

3. Fluid passage system (1) for a piece of furniture (10) according to the previous claim characterised in that the fixing system (56, 57, 58, 59) of the tap (51) includes an insertion tunnel (60) for theinsertion of a pushing element (56) in which the insertion tunnel (60) is obtained internally with respect to the insertion element (2) and it is placed between said first internal pipe and said second internal pipe in a parallel condition with respect to said first internal pipe and said second internal pipe, the insertion tunnel (60) being in connection with the exterior of the insertion element (2) by means of a first insertion passing-through cut-out placed between the first coupling (6') and the second coupling (6"), the insertion tunnel (60) being in connection with the exterior of the insertion element (2) by means of a second passing-through cut-out placed between the first mouth (23') and the second mouth (23"), the fixing system (56, 57, 58, 59) further comprising an adjustment screw (59) and a wedge (58) provided with a threaded hole (61) in which the wedge (58) is inserted inside the second cut-out with an inclined end of the pushing element (56) according to a configuration in which when the pushing element (56) is in inserted condition within the insertion tunnel (60) the inclined end of the pushing element (56) is in contact with a corresponding inclined counter-surface of the wedge (58), in such a way that following screwing of the screw (59) on a corresponding bolt (57), the screw (59) applies a pushing force on the pushing element (56) and on the respective inclined surface of the pushing element (56) with consequent traction of the wedge (58) inwardly with respect to the insertion tunnel (60) and corresponding fixing traction of the tap (51) which is fixed to the wedge (58) by means of a threaded bar (62) screwed on the threaded hole (61 ) of the wedge (58).

4. Fluid passage system (1 ) for a piece of furniture (10) according to any of the previous claims characterised in that the coupling (6) is protruding with respect to the connection (5) for connection to a hydraulic network.

5. Fluid passage system (1 ) for a piece of furniture (10) according to any of the previous claims characterised in that the connection (5) of the insertion element (2) has a height (H) which is smaller than or equal to a depth (Z) of the seat (3, 3’, 3”) in such a way that when the insertion element (2) is in an inserted condition inside the seat (3, 3’, 3”) the connection (5) is in hidden condition inside the seat (3, 3’, 3”).

6. Fluid passage system (1 ) for a piece of furniture (10) according to any of the previous claims characterised in that the insertion element (2) of the fluid passage system (1) configured as feeding system of the water is provided with one or more inspection accesses (25, 27) and respective closing caps (26, 28) which are removable for the inspection of the inside of the insertion element (2).

7. Piece of furniture (10) provided with a tap (51), in which the piece of furniture (10) is provided with a body (7), the body (7) defining a compartment (15), the body (7) comprising a technical space (16) which is separate with respect to the compartment (15), the tap (51 ) being located on a hiding plane (11) comprising at least one seat (3, 3’, 3”) which is placed at least partially within a thickness (S) of the hiding plane (11), the piece of furniture (10) being provided with at least one fluid passage system (1) comprising an insertion element (2) for insertion into the at least one seat (3, 3’, 3”), the fluid passage system (1) defining a continuous fluidic path between a coupling (6) and a mouth (23) of the insertion element (2), characterised in that the fluid passage system (1) is made according to any of the previous claims for feeding of the water toward the tap (51), in which the insertion element (2) is in inserted condition inside the seat (3, 3’, 3”) and the connection (5) is in a hidden condition inside the seat (3, 3’, 3”), the fluid passage system (1) being located on the body (7) in such a way as not to even partially occupy the space (15).

8. Piece of furniture (10) according to the previous claim characterised in that the coupling (6) is located within the technical space (16).

9. Piece of furniture (10) according to any of the previous claims 7 to 8 characterised in that the piece of furniture (10) is a wall cabinet unit, the hiding plane (11) being coincident with a base plane (14) of the piece of furniture (10) in the form of wall cabinet unit.

10. Piece of furniture (10) according to any of the previous claims 7 to 8 characterised in that the piece of furniture (10) is a shelf, the containing compartment consisting of a support surface of the shelf itself, the technical space (16) being a connection space directly obtained on the back of the shelf, in correspondence with a terminal part of the seat (3).

11. Piece of furniture (10) according to any of the previous claims 7 to 10 characterised in thatit includes a separation-board (13) for separation of the technical space (16) with respect to the compartment (15), the separation-board (13) being placed in a position selected between:- position at a rear side (45) of the piece of furniture (10), the technical space (16) being placed rearward with respect to a quadrangular shape of the body (7) of the piece of furniture (10);- position at a side (12) of the body (7), the technical space (16) being placed sideways with respect to a quadrangular shape of the body (7) of the piece of furniture (10).

12. Piece of furniture (10) according to any of the previous claims 7 to 11 characterised in that the seat (3, 3’, 3”) is placed on the hiding plane (11) and it is directed toward the upper side (32) of the hiding plane (11), the seat (3, 3’, 3”) comprising a backing surface (46) which delimits the seat (3, 3’, 3”) on a lower side, the seat comprising a connection hole (17) between the seat (3, 3’, 3”) and the technical space (16) in such a way that, when the fluid passage system (1) is in mounted condition with the insertion element (2) placed in the seat (3, 3’, 3”), the coupling (6) is in inserted condition across the hole (17) and protrudes internally to the technical space (16).

13. Piece of furniture (10) according to the previous claim characterised in that it further includes a finishing coating (9) for application on the upper part to the hiding plane (11) for hiding the seat (3, 3’, 3”) and the insertion element (2) placed in the seat (3, 3’, 3”), the finishing coating (9) being selected between:- plane finishing coating (9) surface in which the seat (3, 3’, 3”) is entirely obtained within the thickness (S) of the hiding plane (11 );- finishing coating (9) provided with a portion of the seat (3, 3’, 3”) in which a first semi-seat (3') is obtained on the hiding plane (11) and a second semi-seat (3") is obtained on the finishing coating (9) in such a way that the first semi-seat (3') and the second semi-seat (3") are reciprocally coupled and placed on each other forming the seat (3) when the finishing coating (9) is positioned at the hiding plane (11), the depth (Z) of the seat (3) corresponding to the sum of the depth of the first semi-seat (3’) and the depth of the second semi-seat (3”), so that the insertion element (2) is positioned in an inserted condition inside the seat (3) composed of the assembly of the reciprocally coupled first semi-seat (3’) and second semi-seat (3”).

14. Piece of furniture (10) according to any of the previous claims 7 to 11 characterised in thatthe seat (3, 3’, 3”) is directed toward the lower side (33) of the hiding plane (11), the seat (3, 3’, 3”) being directly connected to the technical space (16) placed rearward with respect to the body (7) of the piece of furniture (10), the seat (3, 3’, 3”) comprising a backing surface which delimits the seat (3, 3’, 3”) on the upper part, the backing surface comprising a connecting duct (54), placed between the seat (3, 3’, 3”) and the upper side (32) of the hiding plane (11 ) of the body (7) of the piece of furniture (10), in such a way that, when the fluid passage system (1) is in mounted condition with the insertion element (2) placed inside the seat (3, 3’, 3”), the coupling (6) is in protruding condition internally to the technical space (16) and the head (4) is in inserted condition inside the duct (54) placed between the seat (3, 3’, 3”) and the upper side (32).

15. Piece of furniture (10) according to the previous claim characterised in that it includes a removable hiding plate (55), in which the plate (55) is applied on the lower side (33) of the hiding plane (11) for hiding the seat (3, 3’, 3”) and of the insertion element (2) inside the compartment (15).

16. Piece of furniture (10) according to any of the previous claims 7 to 15 characterised in that it further includes a fluid passage system (1) which is configured as a water drain system from the sink (8), the fluid passage system (1) defining a continuous fluidic path between the mouth (23) of the insertion element (2) in fluid connection with the first passage (18) for the drain of the sink (8) and the coupling (6) connected to the hydraulic network of water drainage, in which the coupling (6) for connection to the hydraulic network of water drainage is placed in the technical space (16) in hidden condition, the fluid passage system (1) being placed on the body (7) in such a way as not to even partially occupy the compartment (15).

17. Piece of furniture (10) according to the previous claim characterised in that the insertion element (2) of the fluid passage system (1) configured as a water drain system from the sink (8) is provided with one or more inspection accesses (25, 27) and respective closing caps (26, 28) which are removable for the inspection of the inside of the insertion element (2).

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