CN110616989A

CN110616989A - Inner wall frame for sliding door

Info

Publication number: CN110616989A
Application number: CN201910536720.2A
Authority: CN
Inventors: 尼古拉·切卡托
Original assignee: Promani Co Ltd
Current assignee: Promani Co Ltd
Priority date: 2018-06-20
Filing date: 2019-06-20
Publication date: 2019-12-27
Also published as: EP3584399A1; IT201800006481A1; EP3584399B1

Abstract

The invention relates to an inner wall frame for a sliding door, the inner wall frame (10) being of the type comprising a structural frame enclosed in a casing (50), the inner wall frame (10) comprising: two opposite end posts, a first end post (11) and a second end post (12), respectively; a main cross member (13) extending between the upper ends of the two end posts (11, 12); two intermediate posts (14a, 14b) opposite each other, located in a substantially central position between the two end posts (11, 12); one or more pairs of auxiliary cross members (15a, 15b), each pair of cross members being comprised between one of the end posts (12) and one of the intermediate posts (14a, 14 b). The endoframe (10) comprises a main cross member (13), end posts (11, 12), intermediate posts (14a, 14b) and auxiliary cross members (15a, 15b) having a length that can be varied.

Description

Inner wall frame for sliding door

Technical Field

The invention relates to an in-wall frame for a sliding door.

Background of the related art

The use of sliding doors is currently widespread in buildings where revolving doors are not possible due to aesthetic reasons or lack of space.

Sliding doors typically include one leaf (leaf) or two leaves.

The fan plates may be made of a variety of materials, such as, for example, metal, wood, plastic materials, glass, or combinations thereof.

Sliding doors fall into two broad categories: exterior doors and retractable doors.

The external sliding door has a leaf constrained so as to slide along a visible guide fixed at least partially in a wall portion located above the passage opening.

These fan plates are arranged so as to slide between the passage opening and the wall adjacent to said opening, however always remaining visible.

In contrast, retractable doors have a leaf that is constrained to slide along guides that are hidden from view and at least partially fixed above the access opening. The fan plates are arranged so as to slide between the passage opening and the containment casing adjacent to said opening. The housing is adapted to conceal the presence of the fan panel when the fan panel is in the open configuration.

Both the external sliding door and the telescopic sliding door have leaf plates, each fixed to at least two carriages that slide in the guides described above.

Therefore, a retractable sliding door requires a housing for accommodating the leaf in the open configuration.

To provide such a housing, an in-wall frame is installed to fix the housing to the edge of the original opening. Thus, the original opening becomes smaller.

This type of wall-internal frame is usually made of metal.

Considering for example a single-leaf sliding door, usually the inner frame of the wall is provided with two end posts consisting of vertically arranged adapter profile members, which support the upper profiled element containing the sliding guides.

The two facing vertical profiles for supporting the upper profiled element are arranged in a substantially central position and are adapted to delimit the passage opening and the entrance of the fan plate retraction housing.

In particular, these central profiles are arranged at a distance that allows the passage of the sliding fan panel.

Furthermore, a substantially horizontal cross member is fixed between each of the two opposing central profile members and one of the two end posts to provide greater rigidity to the wall inner frame and to form the structure of the retraction housing.

The housing has a surface externally formed by panels made of plasterboard.

In addition to or instead of these cross members, suitable metal plates can be used between the end posts and the two opposite central profile elements.

This background art has some disadvantages.

The columns and cross members are typically of standard dimensions. For applications with smaller dimensions, it is necessary to resort to providing specific elements with the required dimensions.

This requires considerable cost and long installation time.

Alternatively, a series of operations may be performed directly during installation, such as measuring the necessary length of the individual elements and cutting to the size of the application.

However, this results in an extension of the installation time of the frame within the wall and a complicated and troublesome process.

Furthermore, cutting the structural elements of the inner frame of walls at the construction site risks, if not performed well, impairing the structural characteristics of the individual elements and therefore also of the whole structure. In practice, a large torque or bending moment can be generated.

For applications with larger dimensions, it is still possible to use elements providing a certain length, which is rather costly and takes longer to install.

As an alternative, the auxiliary elements may be added by fixing them to the base element so that they reach the size of the application.

This requires considerable additional operations, such as: measuring the necessary length, finding the appropriate auxiliary element, and fixing the auxiliary element to the base element.

Moreover, despite this, the background art still requires additional costs with respect to the costs of standard elements for the internal frame of the wall.

Disclosure of Invention

It is an object of the present invention to provide an endoframe capable of improving the background art in one or more of the above aspects.

Within this aim, an object of the invention is to provide an inner wall frame for sliding doors which ensures great flexibility in application.

Another object of the present invention is to provide an inner wall frame for sliding doors which allows to easily lengthen or shorten its elements in applications respectively with larger or smaller dimensions, and which does not require the use of auxiliary elements.

A further object of the present invention is to provide an inner wall frame for sliding doors which allows to rapidly change the length of its elements in the case of applications with larger or smaller dimensions.

It is a further object of the present invention to overcome the disadvantages of the background art in a manner that can be substituted for any of the existing solutions.

Another object of the present invention is to provide an endoframe for walls which is highly reliable, relatively simple to provide and at competitive costs.

This aim and these and other objects, which will become better apparent hereinafter, are achieved by an inner wall frame for sliding doors of the type comprising a structural frame (frame) enclosed in a casing (casting), comprising:

-two opposite end posts, a first end post and a second end post,

a main cross member extending between the upper ends of the two end posts,

two intermediate posts opposite each other, located in a substantially central position between the two end posts,

-one or more pairs of auxiliary cross members, each pair of cross members being comprised between one of the end posts and one of the intermediate posts,

the endostud is characterized in that the primary cross member, the end posts, the intermediate post and the secondary cross member have variable lengths.

Drawings

Further characteristics and advantages of the invention will become more apparent from the description of a preferred but not exclusive embodiment of an endoframe for a sliding door according to the invention, illustrated by way of non-limiting example in the accompanying drawings, in which:

fig. 1 is a diagrammatic perspective view of an inner wall frame for a sliding door according to the present invention;

FIG. 2 is an exploded view of the intrawall frame of FIG. 1;

FIG. 3 is an enlarged view of a first detail of FIG. 2;

FIG. 4 is an enlarged view of a second detail of FIG. 2;

FIG. 5 is an enlarged view of a third detail of FIG. 2;

FIG. 6 is an enlarged view of a fourth detail of FIG. 2;

FIG. 7 is an exploded detail view of the inner wall frame of FIG. 1;

fig. 8 is a view of a detail of the intrawall frame of fig. 1.

Detailed Description

With reference to the figures, an inner wall frame for a sliding door according to the present invention is generally indicated by reference numeral 10.

The walled inner frame 10 is made of a metal material.

The inner frame 10 for a sliding door comprises two opposing end posts 11 and 12.

In particular, in addition to forming the ends of the endoframe 10, the two columns 11 and 12 delimit: a first end post 11, the first end post 11 delimiting the end of the passage opening, which end faces the edge of the fan plate (not shown in the figures) in the closed configuration; the second end post 12, on the contrary, the second end post 12 delimits an end portion of the sector-plate-housing casing 50, shown in broken lines, which end portion of the sector-plate-housing casing 50 faces the edge of the sector plate opposite to the edge described above when said sector plate is in the open configuration.

The walled inner frame 10 comprises a main cross member 13. A primary cross member 13 extends between the end posts 11 and the upper ends of the end posts 12.

The main cross member 13 comprises guides (not shown in the figures) for the sliding of at least two carriages fixed to the above-mentioned sector.

As mentioned, the endoframe 10 comprises a structural frame closed by panels to form a housing 50 for housing the fan panels in the open configuration.

A housing, which is not part of the walled inner frame, extends from one of the two end posts towards the passage opening.

In the example shown in the drawings, the housing extends from the second column 12.

The endoframe 10 comprises two intermediate posts 14a and 14b opposite each other, the intermediate posts 14a and 14b being arranged in a substantially central position between the two end posts 11 and 12, forming an inlet to the housing.

The intermediate pillars 14a and 14b are fixed to the main cross member 13 in an upper region.

The endoframe 10 further comprises a plurality of pairs of auxiliary cross members 15a and 15b, these auxiliary cross members 15a and 15b being horizontal in the configuration of use and being comprised between one of the end posts and one of the intermediate posts 14a and 14b and being fixed to one of the end posts and one of the intermediate posts 14a and 14 b.

In the example shown in fig. 1, a pair of cross members 15a, 15b is associated with the second end post 12.

The auxiliary cross members 15a, 15b are made of sheet metal, preferably galvanized steel, for example sheet metal defined as DX 51D, Z140 by the EN 10142 standard.

The auxiliary cross members 15a, 15b are arranged in pairs and opposite to each other; in this way, a first auxiliary cross member 15a is associated with the first central column 14a and an opposite second auxiliary cross member 15b is associated with the second central column 14 b.

In particular, the two intermediate posts 14a and 14b and the two auxiliary cross members 15a and 15b of each pair are identical and are arranged symmetrically with respect to the sliding direction of the sector.

The second end post 12, the two intermediate posts 14a, 14b, the pair of auxiliary cross members 15a, 15b and the corresponding main cross member portion 13 constitute a structural frame of the shell 50, the shell 50 being completed by fixing a plurality of panels (not shown in the figures) made of, for example, plasterboard, wood or the like to the above-described components.

One of the features of the present invention is that in the endoframe 10, the main cross member 13, the end posts 11 and 12, the middle posts 14a, 14b, and the auxiliary cross members 15a, 15b are adjustable in length.

With regard to fig. 3, the primary cross member 13 includes a composite profiled element 44, the composite profiled element 44 being provided with a plurality of notches and/or markings 16, the notches and/or markings 16 indicating a predetermined length, adapted to assist an installation technician in cutting the cross member to the size of the application during installation in applications having a width greater than or less than the size of the application.

The profiled element 44 may for example be provided in two sizes: one size, for standard openings, has a notch 16 for applications with smaller size widths; the other size, longer, has a notch 16 for an opening of greater dimension width.

The term "standard size" refers to the size of the framing of the wall in relation to the standard opening. These dimensions vary from country to country and therefore the dimensions of the country in which the wall inner frame 10 is to be used must be considered.

As a non-limiting example, standard dimensions for italian doors are provided: the width 815-.

The forming element 44 may also be provided with markings and/or recesses 16 in a single size, with these markings and/or recesses 16 defining various lengths, both for openings of standard width and for openings having a width of smaller or larger size.

With reference to fig. 4, the first end post 11 may be extended to allow the intramural frame 10 to be applied in an opening having a greater dimensional height.

The first end post 11 has a longitudinal extension and is provided with a main profile 20 of standard length, which main profile 20 comprises two opposite tubular bodies 17a and 17b, parallel to each other and to the extension direction of the post 11.

The expression "standard length" mentioned for the main profile element 20 of the first end post 11 is understood to mean a length of the profile element that substantially follows the standard height of the door of the country in which the intramural frame 10 is applied.

The main profile 20 has a cross-section with a substantially C-shaped profile and comprises two tubular bodies 17a, 17b, respectively a first 17a and a second 17b, which are located substantially at the two corners of the cross-section.

In the present description, the term "cross section" is understood to mean a cross section defined by a plane perpendicular to the direction of extension of the component in question.

The third tubular body 46 is present between the two tubular bodies 17a and 17b, has a quadrangular and preferably rectangular cross section, and is integral with the other two tubular bodies.

The tubular bodies 17a and 17b have a quadrangular, preferably square, cross section.

Both these tubular bodies 17a, 17b are directed towards the passage opening, one towards the first environment and the other towards the second environment, these two environments being separated by the sliding door in question.

Each tubular body 17a, 17b is suitable for the partial insertion of a corresponding pin (18a and 18b respectively) having a quadrangular cross section.

The pins 18a and 18b are fixed to the respective tubular bodies 17a and 17b by means of a plurality of screws (not shown in the figures), each of which passes through two corresponding through holes (also not shown in the figures), one through hole of the tubular bodies 17a, 17b and the other through hole of the corresponding pin 18a, 18 b.

The lengthening of the first end post 11 is ensured by the presence of the auxiliary profiled element 19, the auxiliary profiled element 19 having the same profile as the main profiled element 20 and comprising two similar tubular bodies 21a and 21b having a quadrangular cross section.

The auxiliary profile pieces 19 can be produced in different sizes or in a single size. In the second case, the auxiliary profile piece 19 has a plurality of markings delimiting different sizes to facilitate the necessary operations for cutting to the size of the application.

The tubular bodies 21a and 21b are adapted to be inserted into the remaining parts of the pins 18a and 18b after the pins 18a and 18b have been fixed to the main profile element 20.

The pins 18a and 18b are fixed to the respective tubular bodies 21a and 21b by means of screws (not shown in the figures), each of which passes through two corresponding through holes (partially shown in the figures), one in the tubular bodies 21a, 21b and the other in the corresponding pins 18a, 18 b.

The primary profile 20 and the secondary profile 19 of the first end post 11 overlap so that the projections of the respective cross sections substantially coincide.

Considering fig. 5, each of the intermediate pillars 14a and 14b has a main profile of standard length and of substantially L-shaped cross-section, respectively 22a and 22b, with a tubular body, designated with the reference number 23a for the main profile 22a and not shown for the main profile 22 b.

These tubular bodies have a quadrangular, preferably square, cross section.

The cross-section of each of the tubular bodies substantially corresponds to the shorter portion of the L-shaped profile forming the cross-section.

Each of the main profiles 22a and 22b has a flat portion, 43a and 43b respectively.

The cross section of the flat portions 43a and 43b corresponds to the longest portion of the L-shaped profile forming the cross section of the main profiles 22a and 22 b.

The two columns 14a and 14b are mirror-symmetrical with respect to a plane passing through the sliding direction of the sector.

In particular, the tubular body 23a of the main profile piece 22a and its corresponding tubular body of the main profile piece 22b are parallel, extend in the same extension direction as the intermediate posts 14a, 14b, and have a quadrangular, preferably square, cross section.

The tubular bodies of the main profiles 22a and 22b of the intermediate post are arranged at an end position of the casing 50, both directed towards the passage opening, one towards the first environment and/or the first wall and the other towards the second environment and/or the second wall, these two environments being separated by the sliding door in question.

These tubular bodies are suitable for inserting pins, respectively 24a and 24b, pins 24a and 24b having a quadrangular, preferably square, cross section for connection to corresponding auxiliary profiled elements, respectively 25a and 25 b.

The auxiliary profiles 25a, 25b have the same profile as the corresponding main profiles 22a, 22b and comprise similar tubular bodies 26a and 26b with quadrangular cross-section for inserting the remaining pin portions 24a, 24b after inserting the pins into the respective tubular bodies of the main profiles 22a, 22 b.

The auxiliary profiles 25a, 25b can be produced in different sizes or in a single size.

In the second case, the auxiliary profile pieces 25a, 25b have a plurality of notches and/or marks (not shown in the figures) defining different sizes to facilitate the necessary operations for cutting to the size of the application.

The auxiliary profiles 25a and 22b each have a flat portion, 27a and 27b respectively.

The cross section of the flat portions 27a and 27b corresponds to the longest portion of the L-shaped profile forming the cross section of the auxiliary profiles 25a and 25 b.

The flat portions 27a and 27b have a plurality of through holes 28 for fixing one or more pairs of auxiliary cross members 15a, 15b, in a manner similar to the corresponding flat portions 43a, 43b of the section elements 22a, 22b of the intermediate posts 14a, 14 b.

The main profiles 22a, 22b of the intermediate pillars 14a, 14b are superposed on the respective auxiliary profiles 25a, 25b such that the projections of the respective cross sections substantially coincide.

Considering fig. 6, the second end post 12 comprises a main profile piece 29 of standard length, the main profile piece 29 having a substantially C-shaped cross-section and being constituted by three flat portions.

In particular, the outer surface of the central flat portion 31 is in contact with the end and/or outer wall of the opening in which the sliding door is mounted.

Instead, the two opposing flat portions 32 are respectively directed: one towards the first environment and/or the first wall and the other towards the second environment and/or the second wall, separated by the sliding door under consideration.

For larger sized heights, the second end post 12 may be extended by using a secondary profile 30.

The auxiliary profile element 30 has the same cross section as the main body 29.

A portion of the plate 33 is fixed to the central portion 31 of the main profile 29 of the second end post 12 by using a plurality of screws (not shown in the figures), each of which passes through a respective pair of through holes, one 34 on the plate 33 and the other 35 on the main profile 29.

In the remaining part, the plate 33 is fixed to the central part of the auxiliary profile 30 by using a plurality of screws (not shown in the figures), each of which passes through a corresponding pair of through holes, one 34 on the plate 33 and the other 36 on the auxiliary profile 30.

The primary profile element 29 and the secondary profile element 30 overlap such that the projections of the respective cross sections substantially coincide.

The auxiliary profile piece 30 can be produced in different sizes or in a single size. In the second case, the auxiliary profile piece 30 has a plurality of marks and/or notches defining different sizes to facilitate the necessary operations for cutting to the size of the application.

Referring to fig. 2 and 7, each secondary cross member 15a, 15b has a standard length primary profile piece, 37a and 37b respectively.

The term "standard length" referred to for the main profile elements 37a, 37b of the auxiliary cross members 15a, 15b is to be understood as referring to the length of the profile elements which substantially follows the standard width of the doors of the country where the intrawall frame 10 is applied.

Each main profile piece 37a, 37b is provided with a flat central portion 38, which central portion 38 is comprised between two flat lateral portions 39a, 39b, which are integral with the central portion 38 and are connected to the central portion 38 by folds of sheet metal.

The central portion 38 and the two lateral portions 39a, 39b are parallel to each other and extend parallel to the direction of extension of the main profiles 37a, 37 b.

In particular, in the configuration of use, the central portion 38 is directed towards the outside of the casing 50, while the lateral portions 39a, 39b are directed towards the inside of the casing 50.

Each main profile piece 37a, 37b is associated with a corresponding intermediate post 14a, 14b, having an extension perpendicular to the extension of the intermediate post.

Each main profile piece 37a, 37b is associated with a corresponding intermediate post 14a, 14b by means of a bayonet coupling.

Each cross member 15a, 15b further comprises a secondary profile 40a, 40b, the secondary profile 40a, 40b being shaped like the corresponding primary profile 37a, 37b, the secondary profile 40a, 40b extending from the primary profile 37a, 37b so as to be telescopic with respect to the primary profile 37a, 37 b.

Each auxiliary profile piece 40a, 40b is associated with the second end post 12 by means of a bayonet coupling.

Each main profiled element 37a, 37b has a plurality of holes 41 arranged at a constant distance along a line X parallel to the axis of extension of the profiled element. These holes 41 are suitable for inserting corresponding studs 42 or the like to ensure a stable and determined elongation of the cross member 15.

Specifically, the various holes 41 and corresponding studs 42 are arranged at such distances as to define a predetermined length of the cross members 15a and 15 b.

For applications in holes with larger dimensions, the secondary profiles 40a, 40b are slid telescopically with respect to the primary profiles 37a, 37b, or vice versa, until the desired cross-member length is obtained. The length is then maintained by the obstruction of the relative sliding between the two profiles, caused by the interference of the studs 42 of the secondary profiles 40a, 40b in the holes 41 of the primary profiles 37a, 37 b.

Considering the figures and in particular fig. 8, the lateral portions 39a, 39b of the primary profiles 37a, 37b and the corresponding lateral portions 47a, 47b of the secondary profiles 40a, 40b each have at least one tab 45, not shown in the figures for the tabs of the first profile, this at least one tab 45 projecting towards the inside of the casing, considering the profiles in the configuration of use.

Each tab 45 is adapted to be inserted into a corresponding hole in a corresponding post so as to provide a bayonet coupling.

For the second end post 12, these holes are indicated by reference numeral 48, while for the intermediate posts 14a, 14b, these holes are not shown.

In this way, the frame of the housing can be quickly mounted.

Alternatively, the two main and auxiliary profiles of each cross-member may be associated with the corresponding columns by being fixed with screws.

According to the invention, all components of the walled inner frame 10 are self-supporting.

In a constructive variant (not shown in the figures), the sliding door is provided with two leaves moving in opposite directions, and the inner wall frame is provided with a central passage opening and two frames at the ends, each closed in a housing, or with a single central housing and two passage openings at the ends.

In practice it has been found that the invention achieves the intended aim and objects, providing an inner wall frame that can accommodate openings of larger or smaller dimensions.

The invention thus conceived is susceptible of numerous modifications and variations, all of which are within the scope of the appended claims; all the details may further be replaced with other technically equivalent elements.

In practice, the materials used, provided they are compatible with the specific use, as well as the contingent shapes and dimensions, may be any according to requirements and to the state of the art.

Claims

1. An endowall frame (10) for a sliding door, the endowall frame (10) being of the type comprising a structural frame enclosed in a casing (50), the endowall frame (10) comprising:

-two opposite end posts, a first end post (11) and a second end post (12), respectively,

-a main cross member (13) extending between the upper ends of the two end posts (11, 12),

-two intermediate posts (14a, 14b) opposite each other, located in a substantially central position between the two end posts (11, 12),

-one or more pairs of auxiliary cross members (15a, 15b), each pair of cross members being comprised between one of the end posts (12) and one of the intermediate posts (14a, 14b),

the endoframe (10) is characterized in that the main cross member (13), the end posts (11, 12), the intermediate posts (14a, 14b) and the auxiliary cross members (15a, 15b) have variable lengths.

2. The endoframe (10) according to claim 1, wherein the first end post (11) comprises a primary profile member (20) and a secondary profile member (19).

3. The endowall frame (10) according to claim 2, wherein the primary profile element (20) and the secondary profile element (19) of the first end post (11) overlap such that projections of the respective cross sections substantially coincide.

4. The endoframe (10) according to claim 2, wherein the main profile (20) has a cross section of substantially C-shaped profile and comprises two tubular bodies (17a, 17b), respectively a first (17a) and a second (17b), located substantially at two corners of the cross section, and a third tubular body (46) located between the two tubular bodies (17a, 17b), which is formed integrally with the other two tubular bodies.

5. The endoframe (10) according to claim 4, wherein the first tubular body (17a) and the second tubular body (17b) have a quadrangular cross section and are suitable for the partial insertion of corresponding pins (18a, 18 b).

6. The endoframe (10) according to claim 5, wherein the secondary profile element (19) has the same profile as the primary profile element (20) and comprises two similar tubular bodies (21a, 21b), the two similar tubular bodies (21a, 21b) being suitable for partially inserting a portion of the pin (18a, 18 b).

7. The endoframe (10) according to claim 1, wherein each of the intermediate pillars (14a, 14b) has a main profile (22a, 22b) and an auxiliary profile (25a, 25 b).

8. The endowall frame (10) according to claim 7, wherein the primary profiles (22a, 22b) of the intermediate pillars (14a, 14b) are superimposed on the respective secondary profiles (25a, 25b) such that the projections of the respective cross-sections substantially coincide.

9. The endoframe (10) according to claim 7, wherein the profile pieces (22a, 22b) of the intermediate pillars (14a, 14b) have a substantially L-shaped cross-section and comprise a tubular body (23a) and flat portions (43a, 43 b).

10. The endoframe (10) according to claim 8, wherein the secondary profile elements (25a, 25b) have the same profile as the corresponding primary profile elements (22a, 22b) and comprise similar tubular bodies (26a, 26 b).

11. The endoframe (10) according to claim 10, wherein each of the intermediate posts (14a, 14b) comprises a pin (24a, 24b), the pins (24a, 24b) being partially inserted in the tubular body (23a) of the main profile (22a, 22b) and partially inserted in the tubular body (26a, 26b) of the auxiliary profile (25a, 25 b).

12. The endoframe (10) according to claim 1, wherein the second end post (12) comprises a primary profile element (29) and a secondary profile element (30).

13. The endoframe (10) according to claim 12, wherein the primary profile element (29) and the secondary profile element (30) of the second end post (12) overlap such that projections of the respective cross sections substantially coincide.

14. The endoframe (10) according to claim 12, wherein the main profile (29) of the second end post (12) has a substantially C-shaped cross-section consisting of three flat portions (31, 32).

15. The endoframe (10) according to claim 12, wherein the second end post (12) comprises a plate (33), the plate (33) being partly fixed on the main profile element (29) and partly fixed on the auxiliary profile element (30).

16. The endowall frame (10) according to claim 1, wherein each of the secondary transverse cross members (15a, 15b) has a primary profile element (37a, 37b) and a secondary profile element (40a, 40 b).

17. The endoframe (10) according to claim 16, wherein each of the main profiles (37a, 37b) has a flat central portion (38), the central portion (38) being comprised between two flat lateral portions (39a, 39b), the lateral portions (39a, 39b) being integral with the central portion (38) and connected to the central portion (38) by folds of sheet metal, the central portion (38) and the lateral portions (39a, 39b) extending parallel to each other and to the extension direction of the main profiles (37a, 37 b).

18. The endoframe (10) according to claim 16, wherein the secondary profiles (40a, 40b) are shaped in a similar way to the corresponding primary profiles (37a, 37b), the secondary profiles (40a, 40b) having two flat lateral portions (47a, 47b), the secondary profiles (40a, 40b) extending from the primary profiles (37a, 37b) so as to be telescopic with respect to the primary profiles (37a, 37 b).

19. The endoframe (10) according to claim 16, wherein each primary profile element (37a, 37b) has a plurality of holes (41) and each secondary profile element (40a, 40b) comprises a plurality of corresponding studs (42).

20. The endoframe (10) according to claim 19, wherein the holes (41) are arranged at a constant distance along a line (X) parallel to the axis of extension of the main profiles (37a, 37 b).

21. The endoframe (10) according to claim 16, wherein the primary profile elements (37a, 37b) are associated with the corresponding intermediate posts (14a, 14b) and each secondary profile element (40a, 40b) is associated with the second end post (12).

22. The endoframe (10) according to one or more of the preceding claims, wherein said lateral portions (39a, 39b) of said primary profiles (37a, 37b) and said corresponding lateral portions (47a, 47b) of said secondary profiles (40a, 40b) each have at least one tab (45), said at least one tab (45) being suitable for insertion in a corresponding hole (48) in said corresponding post (12, 14a, 14b) so as to provide a bayonet coupling.

23. The endoframe (10) according to claim 1, wherein the primary cross member (13) comprises a composite profiled element (44), the composite profiled element (44) being provided with a plurality of notches and/or markings (16) indicating different lengths.

24. The endoframe (10) according to claim 1, wherein the main cross member (13), the end posts (11, 12), the intermediate posts (14a, 14b) and the cross elements (15a, 15b) are made of a metallic material.

25. The endowall frame (10) according to claim 1, wherein the secondary cross members (15a, 15b) are provided starting from sheet metal, preferably made of galvanized steel.