Storage bed and related manufacturing method

Abstract

Storage bed (1) comprising a container frame (2), a support structure (9) configured to support at least one mattress, and an articulated movement mechanism (10) comprising linkages (11) that are coupled on an inner face (7) of a side wall (4) of the container frame (2) via a hinge device (12) that includes an anchoring plate (14) consisting of a plate-shaped body (13) of oblong shape having a flat bearing face (14a) arranged in abutment against a face of the side wall (4), and two support pins (15) that form a monolithic single body with the plate-shaped body (13) and are inserted into two respective anchoring holes (17) that extend in the side wall (4) transversely to a longitudinal axis (K) of the side wall (4).

Description

CROSS-REFERENCE TO RELATED PATENT APPLICATIONS

[0001] This application claims priority to Italian Patent Application No. 102024000029115 filed on 19 December 2024, the content of which is incorporated herein by reference.TECHNICAL FIELD

[0002] The present invention relates to a storage bed and the corresponding manufacturing method.CONTEXT

[0003] As is known, so-called "drawer-type" or "container" storage beds generally comprise a rectangular base frame provided with a series of vertical side walls that internally define a compartment. The compartment generally serves a storage function similar to that of a traditional drawer and is commonly used to store objects such as blankets, duvets, clothes, etc....

[0004] Generally, the aforementioned storage beds are provided with a support structure, such as a bed base, which is arranged at the upper opening of the compartment, and a lifting mechanism which is hinged to the support structure and the base frame, and is configured to lift the support structure to access the compartment.

[0005] The lifting mechanism used in the above-mentioned storage beds connects the support structure to two side walls of the base frame via articulated linkages. The linkages are generally connected to each side wall of the bed frame through a flat anchoring plate. The plate has a completely flat and smooth bearing surface that is positioned flush against the inner face of the side wall within the compartment, and is provided with through holes that accommodate screws for fixing the plate to the wall.

[0006] A critical issue of the lifting mechanism identified by the Applicant is the fact that, during use, the anchoring plate is subjected to stresses from the overlying load which, over time, tend to compromise the anchoring of the screws to the side wall, thereby negatively affecting both the stability and the correct operation of the lifting mechanism, as well as damaging the side wall.

[0007] Furthermore, studies conducted by the Applicant have demonstrated that the presence of the anchoring plate on the inner face of the compartment, which remains visible during the lifting of the support surface, negatively affects the qualitative assessment of the storage bed by customers. In fact, the significant size of the anchoring plates and their metallic material are generally not well received by customers, especially when their choice is based on the pursuit of a minimalist style for storage beds, which, as is known, is characterised by uniform colours and clean, simple lines / surfaces, that is, not contaminated by metallic fastening elements and / or decorations.SUMMARY

[0008] The purpose of the present invention is therefore to create a storage bed capable of overcoming the aforementioned drawbacks.

[0009] In accordance with the objectives outlined above, according to the present invention, a storage bed is provided as defined in the corresponding independent claim and preferably, but not necessarily, in any of the claims dependent thereon.

[0010] According to the present invention, there is also provided a method for manufacturing a storage bed as defined in the corresponding independent claim and preferably, but not necessarily, in any of the claims dependent thereon.

[0011] The claims describe preferred embodiments of the present invention and form an integral part of this description.BRIEF DESCRIPTION OF THE FIGURES

[0012] The present invention will now be described with reference to the accompanying drawings, which illustrate a non-limiting embodiment thereof, in which: Figure 1 is a perspective view of a storage bed in a first operating condition, made according to the principles of the present invention, Figure 2 is a perspective view of the storage bed shown in Figure 1 in a second operating condition, Figures 3 to 6 show respective details / portions on an enlarged scale and with removed parts of the storage bed shown in Figure 1, Figure 7 shows a storage bed made according to a possible embodiment of the present invention in the second operating condition, Figures 8 and 9 show further details / portions on an enlarged scale and with removed parts of the storage bed shown in Figure 7. DESCRIPTION OF EMBODIMENTS

[0013] With reference to Figures 1 and 2, the number 1 indicates, as a whole, a storage bed. The storage bed corresponds to a so-called drawer bed or wardrobe bed. The storage bed 1 comprises a container frame 2, which is adapted to be placed resting on an underlying floor, preferably, but not necessarily, by means of support feet 3.

[0014] According to a preferred embodiment, the container frame 2 may have a substantially rectangular shape and in Figures 1 and 2 it features a reference axis A. The storage bed 1 comprises four sides formed by four respective lateral walls 4. In the illustrated example, two lateral walls 4 extend parallel to each other and to the reference axis A; the other two lateral walls 4 extend transversely, preferably approximately perpendicular to the reference axis A. The container frame 2 may further comprise, preferably but not necessarily, a bottom wall 5. The bottom wall 5 is preferably horizontal.

[0015] In the illustrated example, the side walls 4 are substantially vertical, each extending along a reference axis K and delimiting between them and with the bottom wall 5 at least one storage compartment 6. The storage compartment 6 is configured to contain household items, such as blankets, duvets, clothing, linen or similar items, and has an opening at the top.

[0016] The side walls 4 comprise respective internal peripheral surfaces or faces 7 that internally delimit the bed compartment 6. According to a preferred exemplary embodiment, the internal face 7 of the side wall 4 is preferably rectangular, substantially flat, and extends on a substantially vertical plane. The side walls 4 also comprise external faces 8, which are opposite to the internal faces 7 and face outward, that is, on the side opposite to the bed compartment 6.

[0017] The storage bed 1 further comprises a support structure 9 that is configured to support a resting surface for one or more mattresses (not shown). The support structure 9 may comprise slats or similar supporting components that are adjacent and coplanar with each other, and a preferably rectangular perimeter frame 18 that supports the slats.

[0018] The storage bed 1 further comprises an articulated movement mechanism 10 that is coupled / connected with the container frame 2. The articulated movement mechanism 10 is provided with a series of linkages 11 that extend inside the bed compartment 6 and connect the support structure 9 with the underlying container frame 2.

[0019] The levers 11 are arranged in order to face the two inner faces 7 of the parallel side walls 4. According to a preferred embodiment, the levers 11 extend at least partially into the bed compartment 6 in order to be positioned below and adjacent to the two inner faces 7 of two side walls 4. The levers 11 are configured to lift the support structure 9 from a first position (shown in Figure 1) to a second position (shown in Figure 2), and vice versa.

[0020] In the first position, the storage bed 1 is in a first operational condition in which the support structure 9 is arranged substantially horizontal, that is, it is completely lowered and substantially obstructs or closes the upper opening of the bed compartment 6. In the second position, the storage bed 1 is in a second operational condition in which the support structure 9 is raised from the container frame 2 in order to open the bed compartment 6 from above and allow access to it.

[0021] In the second position, the support structure 9 can be raised and rest on an inclined and / or vertical plane (for example, in a simple opening condition of the bed compartment 6), and / or can be raised and rest on a horizontal plane, for instance, to conveniently allow the user to remake the bed or replace the mattress.

[0022] The articulated movement mechanism 10 also comprises hinge devices 12, which rotatably connect the linkages 11 to two parallel side walls 4 of the container frame 2.

[0023] With reference to Figures 1-6, according to the present invention, the levers 11 are coupled on an inner face 7 of each of the two side walls 4 of the container frame 2, at two connection points P1 and P2 defining the joints, via a hinge device 12 so as to rotate around two respective axes of rotation B.

[0024] The rotation axes B are spaced apart and are orthogonal to a longitudinal axis K of development of the lateral wall 4. Conveniently, the rotation axes B pass through each lateral wall 4 at the two connection points P1 and P2. The connection point P1 is spaced from the connection point P2 along the longitudinal axis K. According to a possible exemplary embodiment, the distance between point P1 and point P2 on the wall 4 may preferably be between approximately 440 mm and approximately 55 mm.

[0025] According to the present invention, the hinge device 12 comprises a bracket or anchoring plate 14 that features a bearing face 14a arranged in abutment against a face of the side wall 4 and is securely fixed to the side wall 4 itself by means of fastening elements 16.

[0026] According to the present invention, the anchoring plate 14 coupled to the side wall 4 is conveniently constituted by a plate-shaped body 13 shaped in order to have two respective support rods or pins 15 that extend cantilevered from the bearing faces 14a and are inserted into two respective anchoring holes 17 made on the side wall 4. Preferably, the plate-shaped body 13 and the respective support pins 15 form a single monolithic body. Each support pin 15 extends from the plate-shaped body 13 orthogonally to the bearing face 14a and cantilevered from the same.

[0027] Conveniently, the length of the support pin 15 along axis B is greater than the thickness S of the side wall 4. Preferably, the length of the support pin 15 may be between approximately 18 mm and approximately 40 mm. More preferably, the length of the pin may be between approximately 20 mm and approximately 37 mm. Even more preferably, the length of the support pin 15 may be between approximately 24 mm and approximately 32 mm.

[0028] Preferably, the support pin 15 is conveniently approximately cylindrical and has an approximately circular cross-section. Preferably, the external diameter of the support pin 15 is slightly less than the internal diameter of the anchoring hole 17. The external diameter of the support pin 15 may range between approximately 10 mm and approximately 40 mm.

[0029] The plate-shaped body 13 of the anchoring plate 14 can be made of metal or similar materials. The plate-shaped body 13 of the anchoring plate 14 can have an oblong rectangular shape.

[0030] The anchoring holes 17 extend transversely, preferably orthogonally, to the longitudinal axis K in the side wall 4. The fastening members 16 may comprise, for example, a series of screws, rivets or the like.

[0031] According to a preferred embodiment shown in Figures 1-6, the two anchoring holes 17 of each side wall 4 are through holes that extend coaxially to the two respective axes of rotation B. According to a preferred embodiment, the plate-shaped body 13 of the anchoring plate 14 has the substantially flat support face 14a which is arranged in abutment against the outer face 8 of the side wall 4.

[0032] According to a preferred embodiment shown in Figures 1-6, the two support pins 15 of the plate-shaped body 13 of the anchoring plate 14 extend into the two respective anchoring holes 17 in order to have their respective distal ends 20 protruding from the inner face 7 of the lateral wall 4 into the bed compartment 6.

[0033] According to a preferred embodiment shown in Figures 1-6, an articulated lever 11 is pivoted on the distal connecting end 20 protruding from a support pin 15 to rotate around a first axis of rotation B; the other lever 11 is pivoted on the distal connecting end 20 protruding from the other support pin 15 to rotate around the other axis of rotation B.

[0034] The distal connecting end 20 of the support pin 15 is rotatably coupled with the linkage 11 in order to allow the partial rotation of the linkage 11 itself around axis B between the first and second positions, and vice versa. The distal connecting end 20 of the support pin 15 is configured to be mechanically rotatably coupled with an axial end of the linkage 11. The other axial end of the linkage 11 is coupled to the support structure 9 in a rotatable manner around a rotation axis C parallel to the rotation axis B.

[0035] A technical effect achieved through the use of the hinge device 12 described above is that of increasing the stability of the movement of the support structure 9. Tests conducted by the Applicant have demonstrated that positioning the anchoring plate 14 in abutment against the outer face 8 of the side wall 4 and the use of the two support pins 15 passing through the side wall 4 results in an increase in the structural stability of the articulated movement mechanism 10.

[0036] Furthermore, the anchoring plate 14 arranged in abutment on the outer face 8 of the side wall 4 can be conveniently coated. The coating can conveniently be a layer, for example fabric-based, or a padded material, or a coating layer or panel, for example made of wood or any similar material. The coating may include a fabric and / or padding or similar.

[0037] Furthermore, the removal of the plates inside the bed compartment 6 helps to give the storage bed 1 the minimalist style appreciated by customers.

[0038] The articulated lever system 11 may conveniently comprise one or more levers or rods 11a and / or one or more pistons 11b having a distal end hinged to the end 20 of the support pin 15 to rotate around axis B.

[0039] The levers 11 of the articulated movement mechanism 10 can together define an articulated parallelogram structure connected at the top to the support structure 9 at four rotation points to rotate relative to the latter around the two rotation axes C, and at the bottom to each of the two parallel side walls 4 via two hinge devices 12 so as to perform rotations around the rotation axes B relative to the container frame 2.

[0040] With reference to the embodiment shown in Figures 1-6, the articulated movement mechanism 10 comprises, for each of the two parallel side walls 4, a pair of separate and distinct linkages 11 along the longitudinal axis K and connected to the side walls 4 themselves at two points P1 and P2 via the hinge devices 12.

[0041] A linkage 11 is connected to the side wall 4 at one longitudinal end thereof via the hinge device 12 (for example, near the headboard of the bed); the other linkage 11 is connected to the side wall 4 at an intermediate longitudinal position thereof via the same hinge device 12.

[0042] In the illustrated example, the rods 11a and / or pistons 11b of the linkage 11 have a second distal end hinged to the support structure 9, conveniently through a bracket 22 preferably with an L-shaped section, so as to rotate around an axis C parallel to axis B.

[0043] It is understood that the present invention is not limited to the application of the hinge device 12 on the side walls 4 parallel to the reference axis A, but may also provide, in addition or alternatively, other arrangements (not illustrated), such as, for example, the application of the hinge device 12 on the side walls 4 that are parallel to each other and orthogonal to the reference axis A.

[0044] Some operational steps for the construction of the storage bed 1 described above will be outlined below.

[0045] The method comprises the steps of preparing the container frame 2; preparing the linkages 11; preparing the support structure 9; preparing the hinge devices 12, preferably two hinge devices 12, one for each side wall 4. The method further comprises the step of making at least two anchoring holes 17 on each of the two side walls 4. The anchoring holes 17 are preferably made on the two respective side walls 4 in order to be coaxial with the two rotation axes B of the linkages 11. Conveniently, the two anchoring holes 17 are formed on each side wall 4 at the two connection points P1 and, respectively, P2.

[0046] The method comprises the step of positioning the plate-shaped body 13 of each anchoring plate 14 in abutment against the outer face 8 of the lateral wall 4 in order to engage the two support pins 15 in the two anchoring holes 17.

[0047] A technical effect achieved through the creation of the two anchoring holes 17 on the side walls 4 and simultaneously the provision of the anchoring plate 14 with the two support pins 15, is that of simplifying the assembly of the hinge device 12 and thereby reducing assembly time and costs.

[0048] The method comprises the step of connecting the linkages 11 with the protruding ends of the respective support pins 15. The method comprises the step of coupling / connecting a distal end of a linkage 11 with the distal end 20 of the support pin 15. It is understood that this step is performed for each linkage 11 of the articulated movement mechanism 10. The method further comprises the step of coupling / connecting a second distal end of the linkage 11 rotatably with the support structure 9.

[0049] The method further comprises the step of securely fixing the plate-shaped body 14 of the hinge device 12 to the outer face 8 of the side wall 4 by means of the fastening elements 16.

[0050] The method may further preferably comprise the step of covering the outer face of the lateral wall 4 by means of a covering (layer or panel) so as to cover the external plate-shaped body 14 of each lateral wall 4.

[0051] The advantages of the storage bed described above are as follows.

[0052] The use of the anchoring holes 17 on the side walls 4 and simultaneously the insertion of the support pins 15 into them ensures the fastening of the anchoring plates 14 to the side walls 4 and thus increases the stability of the articulated movement mechanism.

[0053] Furthermore, the arrangement of the anchoring holes 17 on the side walls and simultaneously the use of the anchoring plates simplifies assembly, reduces costs, and therefore increases the accuracy of the positioning of the joints on the side walls, thus ensuring the stability and correct operation of the articulated movement mechanism.

[0054] Furthermore, the complete elimination of the oblong anchoring plates integrating the four joints on the internal faces advantageously enhances the minimalist style of the storage bed. The anchoring plates on the external face can be concealed with a simple covering.

[0055] It is ultimately clear that modifications and variations can be made to the storage bed and the manufacturing method described above without departing from the scope of the present invention.

[0056] Figure 7 shows a storage bed 30 that is similar to the storage bed 1 shown in Figure 2, and whose parts will be identified, where possible, with the same reference numbers that identify corresponding parts of the storage bed 1.

[0057] The storage bed 30 shown in Figure 7 and particularly in Figures 8 and 9, differs from the storage bed 1 shown in Figures 1-6 in that the two anchoring holes 17 are made on the inner face 7 of the side wall 4 opposite to the outer face 8. Preferably, the anchoring holes 17 include blind holes. This solution is particularly advantageous when the side wall 4 is made of wood and an outer face free of plates, screws, and coverings is required. According to this embodiment, the length of the support pin 15 and the anchoring hole 17 is less than the thickness S of the side wall 4.

[0058] Furthermore, the storage bed 30 shown in Figure 7 and particularly in Figures 8 and 9, differs from the storage bed 1 shown in Figures 1 and 2 in that the plate-shaped body 13 of the anchoring plate 14 arranged on a side wall 4, has the flat support face 14a arranged in abutment against the flat inner face 7 of the side wall 4.

[0059] Furthermore, the storage bed 30 shown in Figure 7 and particularly in Figures 8 and 9, differs from the storage bed 1 shown in Figures 1-6 in that the two support pins 15 of the plate-shaped body 13 of the anchoring plate 14 extend into the two respective anchoring holes 17 without protruding from the outer face 8.

[0060] Furthermore, the storage bed 30 shown in Figure 7 and particularly in Figures 8 and 9 differs from the storage bed 1 shown in Figures 1-6 in that the hinge device 12 coupled to a side wall 4 comprises two connection pins 31, which extend from the anchoring plate 14 in the opposite direction to the two support pins 15. Preferably, each connection pin 31 extends coaxially to a rotation axis B so as to protrude into the bed compartment 6. Preferably, each connection pin 31 has a distal end 32 on which a linkage 11 is pivotally mounted.

Claims

1. Storage bed (1) (30) comprising: a container frame (2) which is provided with side walls (4) having inner faces (7) that delimit a bed compartment (6), a support structure (9) configured to support at least a mattress, an articulated movement mechanism (10) comprising linkages (11), which connect the support structure (9) to said container frame (2) and are configured in order to move the support structure (9) between at least a first operating position, in which the support structure (9) is lowered so as to be positioned adjacent to the opening of the bed compartment (6), and at least a second position, in which the support structure (9) is raised relative to the underlying container frame (2) so as to clear the opening of the bed compartment (6) to allow access to the bed compartment (6), wherein the linkages (11) are coupled on an inner face (7) of at least one side wall (4) of the container frame (2) by means of a hinge device (12), in order to rotate around two respective axes of rotation (B) that are spaced apart from each other, and are orthogonal to a longitudinal axis (K) of said side wall (4), the hinge device (12) comprises an anchoring plate (14) consisting of a plate-shaped body (13) of oblong shape extending along said longitudinal axis (K) and having a flat bearing face (14a) arranged in abutment against a face of the lateral wall (4), and at least two support pins (15) forming a monolithic single body with the plate-shaped body (13), the support pins (15) are spaced apart along said anchoring plate (14), extend in a cantilever manner from the bearing face (14a) of the plate-shaped body (13), and are engaged in two respective anchoring holes (17) that extend into said lateral wall (4) transversely to a longitudinal axis (K) of the lateral wall (4) itself, the anchoring plate (14) of the plate-shaped body (13) is also fixed to the side wall (4) by means of fastening members (16).

2. Storage bed according to claim 1, wherein the anchoring holes (17) are through holes that extend coaxially to the two respective axes of rotation (B), the plate-shaped body (13) of the anchoring plate (14) has the flat bearing surface (14a) arranged in abutment against the outer face (8) of said lateral wall (4), which is opposite to the inner face (7) of said lateral wall (4), the two support pins (15) of the plate-shaped body (13) of the anchoring plate (14) extend into the two respective anchoring holes (17) in order to have their respective distal ends (20) protruding from the inner face (7) of the lateral wall (4) into the said bed compartment (6), a linkage (11) is pivoted on the protruding distal end (20) of a support pin (15) to rotate around a first axis of rotation (B), another linkage (11) is pivoted on the projecting distal end (20) of the other support pin (15) to rotate about the other axis of rotation (B).

3. Storage bed according to claim 2, wherein the external face (8) of the side wall (4) is covered by a coating layer that conceals said anchoring plate (14).

4. Storage bed according to claims 2 or 3, wherein the two anchoring holes (17) are made on the inner face (7) of said side wall (4) opposite to the outer face (8), and include blind holes, the plate-shaped body (13) of the anchoring plate (14) has the flat support face (14a) arranged in abutment against the flat inner face (7) of said lateral wall (4), which is opposite to the outer face (8) of said lateral wall (4), the two support pins (15) of the plate-shaped body (13) of the anchoring plate (14) extend into the two respective anchoring holes (17), a linkage (11) is pivoted on a connecting pin (31) of the anchoring plate (14) which extends from the opposite side of the support pin (15) and projects into the bed compartment (6) to rotate around a rotation axis (B), another linkage (11) is pivoted on another connecting pin (31) of the anchoring plate (14) which extends from the opposite side of the other support pin (15) and protrudes into the bed compartment (6) to rotate around the other axis of rotation (B).

5. Storage bed according to any one of the preceding claims, wherein the two support pins (15) of the anchoring plate (14) are dimensioned so as to be fitted into the respective anchoring holes (17) made in the side wall (4).

6. Method for manufacturing a storage bed according to any one of the preceding claims, comprising the steps of: provide a hinge device (12) comprising an anchoring plate (14) consisting of a plate-shaped body (13) of oblong shape extending along the longitudinal axis (K) of the side wall (4) and having a flat support face (14a) and at least two support pins (15) forming a single monolithic body with the plate-shaped body (13), form two anchoring holes (17) in the said lateral wall (4) which extend transversely to the said longitudinal axis (K), arrange the support face (14a) of the anchoring plate (14) in abutment against a face of the lateral wall (4) so as to engage the two support pins (15) in the respective anchoring holes (17), securely fix the anchoring plate (14) of the hinge device (12) to the side wall (4) itself by means of fastening elements (16), rotatably couple the linkages (11) with the hinge device (12).

7. Method according to claim 6, comprising the steps of: create the two through anchoring holes (17) that extend coaxially to the two respective axes of rotation (B), arrange the plate-shaped body (13) of the anchoring plate (14) with the flat bearing face (14a) abutting against the outer face (8) of said lateral wall (4), which is opposite to the inner face (7) of said lateral wall (4), engage the two support pins (15) of the plate-shaped body of the anchoring plate (14) within the two respective anchoring holes (17) in order that the respective distal ends (20) protrude from the inner face (7) of the lateral wall (4) into the said bed compartment (6), couple a linkage (11) to the protruding distal end of a support pin (15) in a rotatable manner so as to rotate around a first axis of rotation (B), couple another linkage (11) to the protruding distal end of the other support pin (15) in a rotatable manner so as to rotate around the other axis of rotation (B).

8. Method according to claim 7, comprising the steps of create the two anchoring holes (17) on the inner face (7) of the said side wall (4) opposite to the outer face (8), in order to form blind holes, arrange the flat bearing face (14a) of the plate-shaped body (13) of the anchoring plate (14) in abutment against the flat inner face (7) of said lateral wall (4), which is opposite to the outer face (8) of said lateral wall (4), insert the two support pins (15) of the plate-shaped body (13) into the two respective anchoring holes (17), coupling a linkage (11) with a connecting pin (31) of the anchoring plate (14) to rotate around one of the axes of rotation (B), wherein said connecting pin (31) extends from the anchoring plate (14) into the bed compartment (6) in the opposite direction to the connecting pin (15), couple another linkage (11) with another connecting pin (31) of the anchoring plate (14) to rotate around the other axis of rotation (B), wherein the connecting pin (31) extends from the anchoring plate (14) into the bed compartment (6) in a direction opposite to the connecting pin (15).

9. Articulated movement mechanism configured to be installed in a storage bed (1) (30) comprising a container frame (2) provided with side walls (4) having inner faces (7) that delimit a bed compartment (6), and a support structure (9) configured to support at least one mattress, wherein the articulated movement mechanism (10) comprises linkages (11) that connect the support structure (9) to said container frame (2) and are configured in order to move the support structure (9) between at least a first operating position, in which the support structure (9) is lowered so as to be positioned close to the opening of the bed compartment (6), and at least a second position, in which the support structure (9) is raised relative to the underlying container frame (2) so as to clear the opening of the bed compartment (6) to allow access to the bed compartment (6), wherein the linkages (11) are coupled on an inner face (7) of a side wall (4) of the container frame (2) by means of a hinge device (12) in order to rotate around two rotation axes (B) that are spaced apart from each other, and are orthogonal to a longitudinal axis (K) of said side wall (4), the hinge device (12) comprises an anchoring plate (14) consisting of a plate-shaped body (13) of oblong shape extending along said longitudinal axis (K) and having a flat bearing face (14a) arranged in abutment against a face of the lateral wall (4), and at least two support pins (15) forming a monolithic single body with the plate-shaped body (13), the support pins (15) are spaced apart along said anchoring plate (14), extend cantilevered from the bearing face (14a) of the plate-shaped body (13) and configured to be engaged in two respective anchoring holes (17) that extend into said side wall (4) transversely to a longitudinal axis (K) of the side wall (4) itself, the anchoring plate 14 of the plate-shaped body (13) is also configured to be fixed to the lateral wall (4) by means of fastening elements (16).

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