WO2020075207A1

WO2020075207A1 - Sliding door assembly

Info

Publication number: WO2020075207A1
Application number: PCT/IT2019/050215
Authority: WO
Inventors: Massimo Migliorini
Original assignee: Koblenz S.P.A.
Priority date: 2018-10-09
Filing date: 2019-09-30
Publication date: 2020-04-16
Also published as: IT201800009265A1; ES2824349A2; ES2824349R1

Abstract

In a sliding door assembly (1) a sliding door panel (2) translates between open and closed positions supported by longitudinal guide organs (7) which are fixed to it and slidingly supported by first rotating organs (5) fixed to the vertical wall (4). It is kept in the vertical plane also by the action of further longitudinal guide organs (8) fixed to the panel (2), which slidingly engage coupling organs (9) fixed to the vertical wall (4). Rotations of the panel (2) around an axis perpendicular to the vertical wall (4) are substantially impeded thanks to a first flexible element (10) which runs from a first lower end (2a) of the panel (2) to a second upper end (2b) of the panel (2) diagonally opposed to the first (2a) being deflected by a first lower deflecting device (12) and by a first upper deflecting device (13) directly or indirectly fixed to the vertical wall (4), as well as thanks to a second flexible element (11) which runs from a second lower end (2c) of the panel (2) to a first upper end (2d) of the panel(2) diagonally opposed to the second (2c) being deflected by a second lower deflecting device (14) and by a second upper deflecting device (15) directly or indirectly fixed to the vertical wall (4).

Description

DESCRIPTION

SLIDING DOOR ASSEMBLY. Technical Field

The present invention concerns a sliding door assembly.

Background Art

In general sliding door assemblies comprise a sliding door panel, which is longitudinally guided to slide parallel to a vertical wall between its opening and closing end positions which respectively correspond to maximum uncovering and maximum covering of a door opening provided in the vertical wall. Usually rotating organs or support carriages are (superiorly or inferiorly) fixed to the panel, are then slidingly engaged into a (upper or lower) sliding rail and support the weight of the panel as well as enable its movement. Guide organs are usually present on the side opposite to the one of the support carriages, a part of which is fixed either to the wall or to the floor whereas another part is fixed onto the panel, said guide organs keeping the panel in its own vertical plane parallel to the vertical wall itself.

A drawback of these system is the need of a supporting and sliding rail whose length is twice the width of the panel, in order to permit the movement of the panel between the complete opening and closing positions. Therefore, a huge space is necessary to install the rail and furthermore when the panel is not hidden in a related pocket inserted in the wall, when the door is closed the rail hanging from the wall above the panel is well visible.

Document EP 2 646 635 Al describes a sliding door assembly wherein a sliding rail is superiorly fixed to the panel on a face of the panel itself facing the wall, the sliding rail resting on a pair of wheels which are fixed to the vertical wall above the door opening and on one side of it. Two support wheels are further fixed at the ends of the lower edge of the panel, which assist the top wheels in supporting the panel. In this solution, being fixed to the panel the top rail remains hidden between the panel and the wall during the whole movement of the panel, and its length is equal to the length of the panel itself only. However the top wheels which are fixed to the wall are located in a small space, and alone could not correctly support the panel itself without it resting onto the two wheels which are located at the lower ends of the panel. These support wheels are at least partially visible and slide or run on the floor during the opening - closing movement.

Disclosure of the invention

The aim of the present invention is to overcome the above mentioned disadvantages by providing a sliding door assembly wherein the sliding, supporting and stabilizing system does not make it necessary to have any guiding or supporting system or element which touches the floor or which must move on it.

A further aim of the present invention is to provide a sliding door assembly whose sliding, supporting and stabilizing system remains constantly hidden between panel and wall.

These aims and others, which shall become more readily apparent in the description that follows, are achieved, in accordance with this invention, with a sliding door assembly having the structural and functional features described in the independent claim appended herein, further embodiments of it being described in the dependent claims.

Brief description of the drawings

The invention is described in more detail below with reference to the accompanying drawings, which illustrate a preferred, non-limiting embodiment.

Figure 1 is a schematic perspective front view of a sliding door assembly in a partial opening condition.

Figures 2a and 2b are front views of a sliding door assembly according to the invention, illustrated in an open and in a closed position respectively.

Figure 3 is an enlarged detail of a portion of figure 2a. Figure 4 is a perspective back view of the sliding door assembly of the invention with the vertical wall taken away for the sake of greater clarity, and illustrating only the door panel with the related supporting and guiding systems. Related enlarged details are also illustrated.

Figure 5 is a further perspective back view of the sliding door assembly according to the invention with the vertical wall taken away for the sake of greater clarity, and illustrating only the door panel with the related supporting and guiding systems.

Figure 6 is an exploded view of a lower detail of figure 5, with some parts taken away in order to better illustrate others.

Figure 7 is a detail of the bottom longitudinal guide organs (in this case obtained by means of second longitudinal guide organs) applicati sul bordo inferiore del pannello di porta.

Figure 8 shows a detail of the fixing of a flexible element (in particular a cable) to a bottom end of the door panel.

Figure 9 shows an enlarged detail of the bottom part of the assembly shown in figure 5.

Figure 10 shows (with an enlargement of the details contained in the boxes) a perspective back view (taken from the side of the vertical wall) of the sliding door assembly according to the invention, with the door panel and the vertical wall taken away to more clearly illustrate its guiding, supporting and stabilizing systems.

Figure 11 shows (with an enlargement of the details contained in the boxes) a perspective front view (taken from the side of the door panel) of the sliding door assembly according to the invention, with the door panel and the vertical wall taken away to more clearly illustrate its guiding, supporting and stabilizing systems.

Figure 12 shows a transverse section (taken in the plane schematically indicated by A-A in figure 5) of the sliding door assembly according to the invention.

Figure 13 shows a perspective front view (taken from the side of the door panel) of the sliding door assembly according to the invention, with the door panel and the vertical wall taken away to more clearly illustrate its guiding, supporting and stabilizing systems (in particular a central portion of the same).

Embodiments of the invention

With reference to the figures, reference numeral 1 indicates a sliding door assembly. The sliding door assembly 1 comprises a sliding door panel 2 translating between open and closed positions which, respectively, correspond to maximum uncovering and maximum covering of a door opening 3 provided in a vertical wall 4 (see in particular figures 2a and 2b). The sliding door assembly 1 further comprises support and guide means provided for supporting and guiding the sliding door panel 2 during a stage of translation between the open and closed positions. Said support and guide means in turn comprise first rotating organs 5 fixed (preferably idle) to the vertical wall 4, out of the area defined by the door opening 3 in proximity of a side extremity thereof and at a predetermined first distance from the floor 6. The support and guide means further comprise first longitudinal guide organs 7 fixed to the door panel 2 at a position which corresponds to said predetermined first distance from the floor 6 an slidingly supported by the first rotating organs 5. The sliding door assembly 1 comprises further guide means cooperating with the support and guide means to keep the door panel 2 in a predetermined plane parallel to the vertical wall 4. Said further guide means in turn comprise second longitudinal guide organs 8 fixed to the door panel 2 parallel to the first longitudinal guide organs 7, at a position which corresponds to a predetermined second distance from the floor 6. Said further guide means further comprise coupling organs 9 fixed to the vertical wall 4 at a predetermined distance from the first rotating organs 5 along a vertical line. Said coupling organs 9 are slidingly engaged into the second longitudinal guide organs 8. The predetermined first distance may be (as illustrated in the figures) greater than the height of the door opening 3, and the panel 2 may be hung (via the first lungitudinal guide organs 7 fixed to it) on the rotating organs 5 (fixed at the wall); the predetermined second distance may be substantially equal to the small distance which is necessary between the bottom edge of the panel 2 and the floor 6 to permit the movement of the panel 2 without it rubbing against the floor 6 itself (as illustrated in the figures). It could also be the opposite: the predetermined first disance could be equal to the small distance which is necessary between the bottom edge of the panel 2 and the floor 6 to permit the movement of the panel 2 without it rubbing against the floor 6 itself (with the first longitudinal guide means associated to a lower edge of the panel 2 and supported by the rotating organs 5 which, even if fixed to the vertical wall, are in proximity of the floor 6). Preferably the situation is the one illustrated in the figures.

The sliding door assembly 1 comprises stabilizing means cooperating with the support and guide means and with the further guide means to stabilize the door panel 2 in said predetermined plane parallel to the vertical wall 4 by substantially avoiding rotations of the door panel 2 around an axis perpendicular to said predetermined plane. The stabilizing means in turn comprise a first flexible element 10 having a first extremity 10a fixed to the door panel 2 in proximity of a first lower end 2a thereof and a second extremity 10b fixed to the door panel 2 in proximity of a second upper end 2b thereof diagonally opposed to the first lower end 2a. The stabilizing means comprise a second flexible element 11 having a first extremity 11a fixed to the door panel 2 in proximity of a second lower end 2c thereof and a second extremity 1 lb fixed to the door panel 2 in proximity of a first upper end 2d thereof diagonally opposed to the second lower end 2c. The stabilizing means comprise a first lower deflecting device 12 and a first upper deflecting device 13 solidly connected to the vertical wall 4, following each other along the path followed by the first flexible element 10 from the first lower 2a to the second upper 2b end of the door panel 2. The first lower deflecting device 12 angularly deflects said path towards the first upper end 2d of the door panel 2 and the first upper deflecting device 13 angularly deflects said path again towards the second upper end 2b of the door panel 2. The stabilizing means further comprise a second lower deflecting device 14 and a second upper deflecting device 15 solidly connected to the vertical wall 4, following each other along the path followed by the second flexible element 11 from the second lower 2c to the first upper 2d end of the door panel 2. The second lower deflecting device 14 angularly deflects said path towards the second upper end 2b of the door panel 2 and the second upper deflecting device 15 angularly deflects said path again towards the first upper end 2d of the door panel 2.

The first flexible element 10 and the second flexible element 11 (which may be cables, preferably metallic cables) are therefore located between the door panel 2 and the vertical wall 4 and cross behind the door panel 2. The interaction with the upper 13, 15 and lower 12, 14 deflecting devices allows a constraint of the panel 2 to the vertical wall 4 and its stabilization against rotations in the vertical plane. During movement of the door panel 2 along its translation direction, the flexible elements 10, 11 slide on the respective deflecting devices 12, 13, 14, 15 and their being fixed at the ends of the panel 2 while being crossed allows counterbalancing of the rotations in the vertical plane. So the door panel 2 may remain lifted from the floor 6. The whole system is located substantially between the door panel 2 and the vertical wall 4 and futhermore the door panel 2 moves in a stable and guided way without anything touching on the floor 6 or rubbing against it. Advanatageously, the sliding door assembly 1 further comprises a connecting structure 16 which rigidly connects the first rotating organs 5 to the coupling organs 9 to form a frame structure 17 fixed to the vertical wall. The connecting structure 16 may be used as a positioning template. The relative positioning of connecting structure 16, rotating organs 5 and/or coupling organs 9 may be made adjustable. The relative positioning of connecting structure 16, rotating organs 5 and/or coupling organs 9 may be made at least pre- settable during mounting onto the vertical wall 4 in order to allow possible adjustments. The frame structure 17 comprises a first supporting structure 18 which supports the first rotating organs 5 and a second supporting structure 19 which supports the coupling organs 9. The connecting structure 16 rigidly connects the first 18 and the second 19 supporting structure together. Preferably, the connecting structure 16 comprises two parallel elongated elements l60a, l60b lying in a plane parallel to the vertical wall 4 and connecting the first rotating organs 5, or any related supporting structure 18, to the coupling organs 9 (or to any related supporting structure 19). In particular, what may be pre-set or adjusted is the relative positioning of said parallel elongated elements l60a, l60b with respect to the rotating organs 5 (and/or the respective supporting structure 18) and/or with respect to the coupling organs 9 (and/or the respective supporting structure 19). See in particular a detail of figure 13, where the distance D may be adjusted/pre-set by acting on the fixing screw by means of a suitable tool. The parallel elongated elements l60a, l60b may be used for possible fixing (by fixed or similar joint) of dust cover brushes 300. The connecting structure 16 (in particular the parallel elongated elements l60a, l60b) may be fixed to the vertical wall 4 (for example by means of related fixing screws 301 and clamps 302. See always figure 13).

In the sliding door assembly 1 according to the invention, at least the portion of the first flexible element 10 from the first lower 12 to the first upper 13 deflecting device, and at least the portion of the second flexible element 11 from the second lower 14 to the first upper 15 deflecting device are both housed in the space defined in combination by the vertical wall 4, the door panel 2 and the two parallel elongated elements l60a, l60b. In this way, as well visible for example in figure 12, the whole system remains hidden between the vertical wall 4 and the door panel 2, in a space substantially equal to the thickness of the connecting structure 16 optionally with the addition of dust cover brushes 300. Therefore looking sideways along the plane of the door panel 2, the flexible elements 10 e 11 turn out to be hidden by the connecting structure 16, in particular by the two parallel elongated elements l60a, l60b.

Opportunely, the first upper 13, the second upper 15, the first lower 12 and the second lower 14 deflecting device are all located on the frame structure 17. In particular, as in the embodiment illustrated in the figures, the first upper 13 and the second upper 15 deflecting device are both located on the supporting structure 18 of the first rotating organs 5, whereas the first lower 12 and the second lower 14 deflecting device are both located on the supporting structure 19 of the coupling organs. As described above, in an inverted condition with respect to this (which i salso possibile for the sliding door assembly 1) the first upper 13 and the seconf upper 15 deflecting device could be both located on the supporting structure 19 of the coupling organs 9, whereas the first lower 12 and the second lower 14 deflecting device could be both located respectively on the supporting structure 18 of the first rotating organs 5.

In general, either the first 7 or the second 8 longitudinal guide organs are fixed to the door panel 2 in proximity of an upper edge 2f thereof to build up related top longitudinal guide organs 20, top engagement organs 22 being built up by either the first rotating organs 5 or respectively the coupling organs 9, and so being fixed to the vertical wall 4 superiorly of the door opening 3 and slidingly engaged into the top longitudinal guide organs 20. The figures show the case where the top longitudinal guide organs 20 are built up by means of the first longitudinal guide organs 7 and where the top engagement organs 22 are built up by means of the first rotating organs 5. The top longitudinal guide organs 20 are fixed to the door panel 2 in proximity of an upper edge 2f thereof. The top engagement organs 22 are fixed to the vertical wall 4 at a height corresponding to, and at a side of the door opening 3.

Correspondingly, in general respectively either the second 8 or the first 7 lungitudinal guide organs are fixed to the door panel 2 at a lower edge 2g thereof parallel to the top longitudinal guide organs 20 to buld up related bottom longitudinal guide organs 21, bottom engagement organs 23 being built up by respectively either the coupling organs 9 or the first rotating organs 5, and so being fixed to the vertical wall 4 at a predetermined distance from the top engagement organs 22 along a long vertical line from the top engagement organs 22 to the floor 6, said bottom engagement organs 23 being slidingly engaged into the bottom longitudinal guide organs 21. The figures show the case where the bottom longitudinal guide organs are built up by means of the second longitudinal guide organs 8 and where the bottom engagement organs 23 are built up by means of the coupling organs 9. The bottom longitudinal guide organs are fixed to the door panel 2 at a lower edge 2g thereof. Preferably, the predetermined distance between top engagement organs 22 and bottom engagement organs 21 corresponds at a positioning of same respectively above the door aperture 3 and at a distance from the floor 6 such that the door panel 2 is as near to the floor 6 as possible without touching it or rubbing onto it. As shown in the figures, advantageously the top longitudinal guide organs 20 are contained within a profile of the door panel 2 (turning out to be hidden from view by the latter between door panel 2 and vertical wall 4). The top longitudinal guide organs 20 (for example the first lungitudinal guide organs 7, as shown in the figures) comprise a top guide rail 200 contained in a longitudinal groove 201 provided in the door panel 2 at the upper edge 2f thereof and facing toward the vertical wall 4.

The top engagement organs 22 (for example the first rotating organs 5, as shown in the figures) are located on a related support structure 18 which supports the first 13 and the second 15 upper deflecting device. Each flexible element 10, 11 runs from the respective first 13 or second 15 upper deflecting device to a respective extremity of the top guide rail 200 and is fixed therein. Preferably this is obtained by means of related clamps 303, most preferably the latter being associated with an adjustment device to adjust tensioning of the flexible element 10, 11. The first 13 and the second 15 upper deflecting device each comprise a respective pulley 130, 150 with horizontal axis. The pulley 130 of the first upper deflecting device 13 and the pulley 150 of the second upper deflecting device 15 follow each other along the translation direction of the door panel 2 and lie in the same plane parallel to the vertical wall 4.

The bottom longitudinal guide organs 21 (for example the second longitudinal guide organs 8, as shown in the figures) comprise a bottom guide rail 210 housed in a groove 211 provided in the thickness of the door panel 2 at its lower edge 2g (see in particular figure 6). The bottom engagement organs 23 (for example in the figures the coupling organs 9) engage the bottom guide rail 210 from below and are located on a related support structure 19 which supports the first 12 and the second 14 lower deflecting devices. Each flexible element 10, 11 runs from the respective first 12 or second 14 lower deflecting device to a respective extremity of the bottom guide rail 210 and is fixed therein. Preferably this is obtained by means of related clamps 305, most preferably the latter being associated with an adjustment device to adjust tensioning of the flexible element 10, 11. The first 12 and the second 14 lower deflecting device comprise each:

- a respective horizontal pulley 120, 140 having vertical axis, which collects the respective flexible element 10, 11 and makes it deflect backwards in the horizontal plane (see in particular the path of the flexible elements 10, 11 illustrated by dashed lines in figure 9);

- a respective vertical pulley 121, 141 having horizontal axis, which collects the respective flexible element 10, 11 from the respective horizontal pulley 120, 140 and sends it to the related upper deflecting element 13, 15.

This disposition of horizontal 120, 140 and vertical, 121, 141 pulleys allows to keep the flexible elements 10, 11 hidden to the outside view by means of the components of the bottom guide rail 210 and, at the same time, to let the flexible elements 10, 11 themselves folding and running in a plane parallel to that of the door panel 2 in order to arrive at the upper deflecting devices 13, 15 in the correct way.

The horizontal pulleys 120, 140 of the first 12 and second 14 lower deflecting device lie in the same horizontal plane perpendicular to the vertical wall 4 one after the other along the translation direction of the door panel 2. The vertical pulleys 121, 141 of the first 12 and second 14 lower deflecting device lie in the same vertical plane parallel to the vertical wall 4 one after the other along the translation direction of the door panel 2.

The top engagement organs 22 (for example, as shown in the figures, the first rotating organs 5) comprise two top wheels 50 following each other along the translation direction of the door panel 2. The top wheels 50 have horizontal axis. The bottom engagement organs 23 (for example, as shown in the figures, the coupling organs 9) comprise two bottom wheels 90 following each other along the translation direction of the door panel 2. The two bottom wheels 90 Have vertical axis. The invention brings important advantages.

In particular, there are no sliding parts, neither rotating parts which get in contact with the floor, the door panel remaining lifted and stable thanks to the stabilizing system.

Moreover, the various elements of the moving and stabilizing system remain hidden between the sliding panel and the vertical wall.

In addition, even looking at the system along the lying plane of the sliding door panel the elements of the system result to be substantially hidden from view by a connecting structure which connects support rotating organs and coupling organs.

The invention described can be modified and adapted in several ways without thereby departing from the scope of the inventive concept.

Moreover, all details of the invention may be substituted by other technicaly equivalent elements.

In practice, the embodiments of the invention may be made of any material, and in any size, depending on requirements.

Claims

1. Sliding door assembly (1) comprising a sliding door panel (2) translating between open and closed positions which, respectively, correspond to maximum uncovering and maximum covering of a door opening (3) provided in a vertical wall (4), support and guide means provided for supporting and guiding the sliding door panel (2) during a stage of translation between the open and closed positions, said support and guide means in turn comprising:

- first rotating organs (5) fixed to the vertical wall (4), out of the area defined by the door opening (3) in proximity of a side extremity thereof and at a predetermined first distance from a floor (6);

- first longitudinal guide organs (7) fixed to the door panel (2) at a position which corresponds to said predetermined first distance from the floor (6) and slidingly supported by the first rotating organs (5);

characterized in that it further comprises:

- further guide means cooperating with the support and guide means to keep the door panel (2) in a predetermined plane parallel to the vertical wall (4), said further guide means in turn comprising: second longitudinal guide organs (8) fixed to the door panel (2) parallel to the first longitudinal guide organs (7), at a position which corresponds to a predetermined second distance from the floor (6); coupling organs (9) fixed to the vertical wall (4) at a predetermined distance from the first rotating organs (5) along a vertical line, said coupling organs (9) being slidingly engaged into the second longitudinal guide organs (8);

- stabilizing means cooperating with the support and guide means and with the further guide means to stabilize the door panel (2) in said predetermined plane parallel to the vertical wall (4) by substantially avoiding rotations of the door panel (2) around an axis perpendicular to said predetermined plane;

the stabilizing means in turn comprising:

- a first flexible element (10) having a first extremity (lOa) fixed to the door panel (2) in proximity of a first lower end (2a) thereof and a second extremity (lOb) fixed to the door panel (2) in proximity of a second upper end (2b) thereof diagonally opposed to the first lower end (2a);

- a second flexible element (11) having a first extremity (l la) fixed to the door panel (2) in proximity of a second lower end (2c) thereof and a second extremity (l lb) fixed to the door panel (2) in proximity of a first upper end (2d) thereof diagonally opposed to the second lower end (2c);

- a first lower deflecting device (12) and a first upper deflecting device (13) solidly connected to the vertical wall (4), following each other along the path followed by the first flexible element (10) from the first lower (2a) to the second upper (2b) end of the door panel (2), the first lower deflecting device (12) angularly deflecting said path towards the first upper end (2d) of the door panel (2), the first upper deflecting device (13) angularly deflecting said path again towards the second upper end (2b) of the door panel (2);

- a second lower deflecting device (14) and a second upper deflecting device (15) solidly connected to the vertical wall (4), following each other along the path followed by the second flexible element (11) from the second lower (2c) to the first upper (2d) end of the door panel (2), the second lower deflecting device (14) angularly deflecting said path towards the second upper end (2b) of the door panel (2), the second upper deflecting device (15) angularly deflecting said path again towards the first upper end (2d) of the door panel (2).

2. Sliding door assembly (1) according to claim 1, characterized in that it further comprises a connecting structure (16) which rigidly connects the first rotating organs (5) to the coupling organs (9) to form a frame structure (17) fixed to the vertical wall (4).

3. Sliding door assembly (1) according to claim 2, characterized in that the frame structure (17) comprises a first supporting structure (18) which supports the first rotating organs (5) and a second supporting structure (19) which supports the coupling organs (9), the connecting structure (16) rigidly connecting the first (18) and the second (19) supporting structure together.

4. Sliding door assembly (1) according to claim 2 or 3, characterized in that the connecting structure (16) comprises two parallel elongated elements (l60a,l60b) lying in a plane parallel to the vertical wall (4) and connecting the first rotating organs (5), or any related supporting structure (18), to the coupling organs (9) or to any related supporting structure (19).

5. Sliding door assembly (1) according to claim 4, characterized in that at least the portion of the first flexible element (10) from the first lower (12) to the first upper (13) deflecting device and at least the portion of the second flexible element (11) from the second lower (14) to the second upper (15) deflecting device are both housed in the space defined in combination by the vertical wall (4), the door panel (2) and the two parallel elongated elements (l60a,l60b).

6. Sliding door assembly (1) according to any of the claims from 2 to 5, characterized in that the first upper (13), the second upper (15), the first lower (12) and the second lower (14) deflecting device are all located on the frame structure (17).

7. Sliding door assembly (1) according to claim 6, characterized in that the first upper (13) and the second upper (15) deflecting device are both located either onto a supporting structure (18) of the first rotating organs (5) or onto a supporting structure (19) of the coupling organs (9), whereas the first lower (12) and the second lower (14) deflecting device are both located either onto the supporting structure (19) of the coupling organs (9) or respectively onto the supporting structure (18) of the first rotating organs (5).

8. Sliding door assembly (1) according to any of the previous claims, characterized in that:

- either the first (7) or the second (8) longitudinal guide organs are fixed to the door panel (2) in proximity of an upper edge (2f) thereof to build up related top longitudinal guide organs (20), top engagement organs (22) being build up by either the first rotating organs (5) or respectively the coupling organs (9), and so being fixed to the vertical wall (4) superiorly of the door opening (3) and slidingly engaged into the top longitudinal guide organs (20);

- respectively either the second (8) or the first (7) longitudinal guide organs are fixed to the door panel (2) at a lower edge (2g) thereof parallel to the top longitudinal guide organs (20) to build up related bottom longitudinal guide organs (21), bottom engagement organs (23) being build up by respectively either the coupling organs (9) or the first rotating organs (5), and so being fixed to the vertical wall (4) at a predetermined distance from the top engagement organs (22) along a vertical line from the top engagement organs (22) to the floor (6), said bottom engagement organs (23) being slidingly engaged into the bottom longitudinal guide organs (21).

9. Sliding door assembly (1) according to claim 8, characterized in that the top longitudinal guide organs (20) are contained within a profile of the door panel (2).

10. Sliding door assembly (1) according to claim 9, characterized in that the top longitudinal guide organs (20) comprise a top guide rail (200) contained in a longitudinal groove (201) provided in the door panel (2) at the upper edge (2f) thereof and facing toward the vertical wall (4).

11. Sliding door assembly (1) according to claim 10, characterized in that the top engagement organs (22) are located on a related support structure (18) which supports the first (13) and the second (15) upper deflecting devices, each flexible element (10,11) running from the respective first (13) or second (15) upper deflecting device to a respective extremity of the top guide rail (200) and being fixed therein.

12. Sliding door assembly (1) according to claim 11, characterized in that the first (13) and the second (15) upper deflecting device comprise each a respective pulley (130,150) with horizontal axis, the pulley (130) of the first upper deflecting device (13) and the pulley (150) of the second upper deflecting device (15) following each other along the translation direction of the door panel (2) and lying in the same plane parallel to the vertical wall (4).

13. Sliding door assembly (1) according to anyone of the claims from 8 to 12, characterized in that the bottom longitudinal guide organs (21) comprise a bottom guide rail (210) housed in a groove (211) provided in the thickness of the door panel (2) at its lower edge (2g).

14. Sliding door assembly (1) according to claim 13, characterized in that the bottom engagement organs (23) engage the bottom guide rail (210) from below and are located on a related support structure (19) which supports the first (12) and the second (14) lower deflecting devices, each flexible element (10,11) running from the respective first (12) or second (14) lower deflecting device to a respective extremity of the bottom guide rail (210) and being fixed therein.

15. Sliding door assembly (1) according to claim 14, characterized in that the first (12) and the second (14) lower deflecting device comprise each:

- a respective horizontal pulley (120,140) having vertical axis, which collects the respective flexible element (10, 11) and makes it deflect backwards in the horizontal plane;

- a respective vertical pulley (121,141) having horizontal axis, which collects the respective flexible element (10,11) from the respective horizontal pulley (120,140) and sends it to the related upper deflecting element (13,15);

the horizontal pulleys (120,140) of the first (12) and second (14) lower deflecting device lying in the same horizontal plane perpendicular to the vertical wall (4) one after the other along the translation direction of the door panel (2); the vertical pulleys (121,141) of the first (12) and second (14) lower deflecting device lying in the same vertical plane parallel to the vertical wall (4) one after the other along the translation direction of the door panel (2).

16. Sliding door assembly (1) according to any of the claims from 8 to 15, characterized in that the top engagement organs (22) comprise two top wheels (50) following each other along the translation direction of the door panel (2).

17. Sliding door assembly (1) according to claim 16, characterized in that the two top wheels (50) have horizontal rotation axis.

18. Sliding door assembly (1) according to any of the claims from 8 to 17, characterized in that the bottom engagement organs (23) comprise two bottom wheels (90) following each other along the translation direction of the door panel (2).

19. Sliding door assembly (1) according to claim 18, characterized in that the two bottom wheels (90) have vertical rotation axis.