Kit for assembling main door for closing compartment, in particular garage compartment

Abstract

Kit (1) for assembling a main door, comprising:-at least two fixed uprights (2) and at least one fixed cross-member (3) that can be associated with each other to define a fixed frame (4) that can be attached to an entrance of a compartment, where the entrance has an associated reference dimension; -at least two movable uprights (5) and a plurality of panels (6) associable with the movable uprights (5) to define a movable door leaf (7); a moving device (8) which can be associated between the movable column (5) and the fixed frame (4); wherein at least one of the fixed column (2), the fixed beam (3) and the movable column (5) is made according to a respective predetermined standard size greater than a reference size, and comprises at least one associated trimmable portion (9) provided with at least one graduated reference scale (11), the graduated reference scale (11) is adapted to allow the trimmable portion (9) to be cut according to a reference size.

Description

Technical Field

[0001] The invention relates to a kit for assembling a primary door for closing a compartment, in particular a garage compartment. Background Art

[0002] As is known, a main door for closing a compartment (e.g., a garage compartment) generally comprises a fixed crossbeam and two fixed columns, which are connected to each other to define a fixed frame, which can be attached to the entrance of the compartment. The main door also comprises at least two movable columns and a plurality of panels, which are connected to the movable columns to define a movable door leaf relative to the fixed frame.

[0003] A primary door of known type comprises movement means between a fixed frame and a movable door leaf, the movement means being adapted to determine the movement of the movable door leaf between a closed configuration and an open configuration of the compartment.

[0004] In detail, the moving device may be of various types, and thus the main door is classified into an overhead door, a sliding door, a sectional door, and the like.

[0005] Typically, the moving device has a lever and counterweight system, thus complicating the installation of the main door.

[0006] In fact, such a system requires careful positioning of the various components according to the actual dimensions of the main door (ie the dimensions of the entrance).

[0007] For this reason, before the parts are produced, specialized technicians ensure that the entrance is measured and the necessary measurements are taken to manufacture the specific main door.

[0008] Next, the manufacturing company manufactures various components based on the height and width of the entrance, which are then assembled at a later stage.

[0009] This inevitably leads to long waits.

[0010] In fact, after deciding on the type of main door, the customer must wait for the contact person to carry out on-site measurements, determine the necessary timetable for the production of the components, and finally wait for the availability of professional technicians to carry out on-site installation.

[0011] Apart from this, it may happen that the measurements taken do not ensure that the main door component fits exactly into the dimensions of the compartment entrance.

[0012] In this case, it is necessary to intervene at the on-site assembly stage, trying to correct discrepancies that could jeopardize the correct execution of the operation, the functionality of the main door and ultimately the customer's satisfaction.

[0013] In the worst case scenario, the production of new components would need to be arranged, further extending the delivery and installation time of the main door. Summary of the invention

[0014] The main purpose of the present invention is to devise a kit for assembling a main door for closing a compartment, in particular a garage compartment, which kit makes it unnecessary to carry out precise measurements before producing the main door.

[0015] Another object of the present invention is to devise a kit for assembling a main door for closing a compartment, in particular a garage compartment, which kit allows quick and accurate assembly and installation operations.

[0016] Another object of the present invention is to devise a kit for assembling a main door for closing a compartment, in particular a garage compartment, which kit is able to overcome the above-mentioned disadvantages of the prior art within the framework of a simple, rational, easy and effective use and cost-effective solution.

[0017] The above-mentioned object is achieved by a kit for assembling a primary door for closing a compartment, in particular a garage compartment, having the features of claim 1 . BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Other features and advantages of the invention will become more apparent from the description of a preferred, but not exclusive, embodiment of a kit for assembling a main door for closing a compartment, in particular a garage compartment, which is illustrated by way of schematic but non-limiting example in the accompanying drawings, in which:

[0019] - Figure 1 and Figure 2 is an axonometric view of a kit according to the invention from two different angles;

[0020] - Figure 3 and Figure 4 are axonometric views from two different angles of a main door that can be manufactured with the kit according to the invention;

[0021] - Figure 5 and Figure 6 is an axonometric view of a fixed crossbeam according to the present invention from two different angles;

[0022] - Figure 7 and Figure 8 are axonometric views of the trimmable portion of the fixed crossbeam according to the present invention from two different angles;

[0023] - Fig. 9 and Fig.10 is an axonometric view of a fixed column according to the present invention from two different angles;

[0024] - Fig.11 and Fig.12is an axonometric view of a trimmable portion of a column according to the present invention from two different angles;

[0025] - Fig.13 and Fig.14 is an axonometric view of a movable column according to the present invention from two different angles;

[0026] - Fig.15 and Fig.16 is an axonometric view of the trimmable portion of the movable column and the lateral support arm according to the present invention from two different angles;

[0027] - Fig.17 and Fig.18 It is an axonometric view of a first graduated positioning scale and a second graduated positioning scale of a movable column according to the present invention. DETAILED DESCRIPTION

[0028] With particular reference to these figures, reference numeral 1 denotes as a whole a kit for assembling a primary door for closing a compartment, in particular a garage compartment.

[0029] The kit 1 comprises at least two fixing uprights 2 and at least one fixing crossbeam 3 which are associated with each other to define a fixing frame 4 which can be attached to the entrance of a compartment.

[0030] In particular, the term "compartment" refers to a garage compartment, but the possibility that the compartment may be of a different type cannot be excluded.

[0031] The inlet has an associated reference dimension.

[0032] In detail, the reference size includes at least a height value and a width value.

[0033] Furthermore, the kit 1 comprises at least two mobile uprights 5 and a plurality of panels 6 which can be associated with the mobile uprights 5 to define a mobile door leaf 7 .

[0034] Further embodiments cannot be excluded in which the kit 1 also comprises two movable crossbars associated with the mobile uprights 5 so as to define a surrounding frame suitable for supporting the panel 6 .

[0035] The movable door leaf 7 is movable relative to the frame 4 between a closed configuration, in which the movable door leaf 7 is arranged to close the entrance, and an open configuration, in which the movable door leaf 7 clears the entrance and allows entry / exit to the compartment.

[0036] For this purpose, the kit 1 comprises movement means 8 which can be associated between the mobile upright 5 and the frame 4 and which are suitable for determining, in use, the movement of the mobile leaf 7 relative to the frame itself.

[0037] The aforementioned components may be assembled together to form the main door 10 .

[0038] According to the embodiment shown in the figures, the movable door leaf 7 is of the rigid type and the movement device 8 comprises a tilting movement member.

[0039] The main door 10 is therefore of the overhead door type.

[0040] However, it cannot be excluded that the main door 10 may be of a different type, such as a sectional door or a sliding door.

[0041] According to the invention, at least one of the fixed uprights 2, the fixed crossbeams 3 or the movable uprights 5 is made according to a respective predetermined standard size greater than a reference size and comprises at least one associated trimmable portion 9 provided with a graduated reference scale 11 adapted to allow the trimmable portion itself to be cut according to the reference size.

[0042] In practice, the kit 1 may be manufactured at the factory before measuring the inlet and may be adapted to the inlet during installation.

[0043] The kit 1 thus allows a significant reduction in production and delivery times and ensures the correct installation of the primary door 10 .

[0044] Specifically, the panel 6 is also manufactured according to a corresponding predetermined standard size that is larger than the reference size.

[0045] According to a preferred embodiment, the panel 6 is completed according to the actual dimensions of the movable door leaf.

[0046] However, it cannot be excluded that the panel 6 may also be provided with an associated trimmable portion 9 provided with a graduated reference scale 11 suitable for allowing it to be cut according to a reference dimension.

[0047] Advantageously, the graduated reference scale 11 comprises a set of reference values ​​corresponding to one of a set of height values ​​or a set of width values.

[0048] In detail, the graduated reference scale 11 may have a reference value corresponding to the height or width of the inlet, depending on the type of component to which it is applied.

[0049] According to the embodiment shown in the figures, the graduated reference scale 11 is of the adhesive label type.

[0050] However, it cannot be excluded that the graduated reference scale 11 is engraved on the trimmable portion 9 or is produced in another way.

[0051] The trimmable portion 9 includes at least one cutting reference 12 at each reference value.

[0052] The function of the cutting reference 12 is to facilitate the cutting operation and ensure that it is performed correctly.

[0053] Specifically, the cutting reference 12 is a type of a notch, a chamfer, a groove, or the like formed on the trimmable portion 9 .

[0054] Furthermore, the trimmable portion 9 comprises a plurality of drill bits 13 defined at reference values ​​and suitable for allowing the various components to be assembled after the cutting operation.

[0055] The fixed crossbeam 3 comprises two end extensions 14 , each of which defines an associated trimmable portion 9 .

[0056] In detail, the trimmable portion 9 of the fixed beam 3 has a reference value corresponding to the inlet width.

[0057] Therefore, the fixed crossbeam 3 is trimmable at both ends.

[0058] The presence of two trimmable portions 9 allows the length of the fixed crossbeam 3 to be adjusted by removing portions of equal length from the two end extensions 14 .

[0059] By doing so, any components associated with fixing the crossbeam 3 are centered relative to the length of the crossbeam itself.

[0060] For example, with reference to the embodiment shown in the figures, the moving device 8 comprises a motor assembly 15 mounted in the central extension of the fixed crossbar 3 .

[0061] The presence of two trimmable portions 9 allows the motor assembly 15 to be kept in a central position on the fixed crossbar 3 , thus ensuring its correct operation.

[0062] Each fixed post 2 comprises an upper extension 16 and a lower extension 17 , the lower extension 17 being opposite to the upper extension 16 and defining an associated trimmable portion 9 .

[0063] It should be clarified that in the present disclosure, the expressions "lower" and "upper" refer to the position of the relevant components once they are assembled and installed at the compartment entrance and the main door 10 is in the closed configuration.

[0064] The trimmable portion 9 of the fixed column 2 has a reference value corresponding to the height of the compartment entrance.

[0065] According to the embodiment shown in the figures, the moving device 8 comprises a pulley assembly 18 mounted on the top of the fixed column 2 (that is, mounted on the end of the upper extension 16).

[0066] Conveniently, the trimmable portion 9 defined on the lower extension 17 allows the length of the fixed column 2 to be adjusted by avoiding prior removal of the pulley assembly 18 .

[0067] Similarly, each movable column 5 includes an upper end 19 and a lower end 20 opposite to the upper end 19 .

[0068] In particular, in the closed configuration, the upper end 19 is intended to operate in conjunction with the upper extension 16 of the fixed column 2 , whereas the lower end 20 is intended to operate in conjunction with the lower extension 17 of the fixed column 2 .

[0069] The upper end 19 defines the associated trimmable portion 9 .

[0070] The trimmable portion 9 of the movable column 5 also has a reference value corresponding to the entrance height.

[0071] According to the embodiment shown in the figures, the kit 1 comprises a tilting movement device 8 .

[0072] In detail, the mobile device 8 includes:

[0073] at least two transverse support arms 21, each transverse support arm 21 having a first end 22 and a second end 24, the first end 22 being hinged to a middle region 23 of the corresponding movable column 5, and the second end 24 being hinged to the top of the corresponding fixed column 2; and

[0074] At least two sliding supports 25 , each of which can be fixed to a corresponding movable column 5 and can be associated with a corresponding fixed column 2 by sliding.

[0075] In more detail, the first end 22 is hinged to a small block 26 which can be attached to a corresponding movable column 5 .

[0076] The second end 24 is coupled to a hinge pin 27 which is arranged at the top of the corresponding fixed column 2 .

[0077] The function of the transverse support arm 21 is to guide the movement of the movable door leaf 7 at the upper end 19 of the movable column 5 and to support its weight.

[0078] Therefore, the lateral support arm 21 must have the correct size and position to allow proper movement of the movable door leaf 7 .

[0079] Advantageously, each lateral support arm 21 comprises at least one relative trimmable portion 9 provided with a graduated reference scale 11 and defined at a first end 22 .

[0080] In particular, the lateral supporting arm 21 may be trimmed at the hinged portion with the movable column 5 .

[0081] In fact, it is worth noting that, generally at the second end 24, the lateral support arm 21 may have a curved pattern and / or shape.

[0082] The trimmable portion 9 of the lateral support arm 21 also has a reference value corresponding to the entrance height.

[0083] Once trimmed, the lateral support arm 21 is attached to the mobile column 5 by means of a nub 26 at a predetermined position according to the height value.

[0084] To this end, the mobile column 5 comprises a first graduated positioning scale 28 defined at the intermediate zone 23 and adapted to allow the first end 22 to be positioned according to a height value.

[0085] The function of the sliding support 25 is to guide the movement of the movable door leaf 7 at the lower end 20 of the movable column 5 .

[0086] For this purpose, the fixed column 2 is provided with a vertical slide rail 29 in which the sliding support 25 can move.

[0087] The sliding support 25 is composed, for example, of needle rollers rolling in vertical slide rails 29 .

[0088] Each sliding support 25 is attached to the corresponding mobile column 5 at a position between the base of the mobile column 5 and the aforementioned intermediate area 23 for articulating the transverse support arm 21 .

[0089] In order to couple the sliding support 25 to the vertical slide rails 29 , each vertical slide rail 29 comprises at least one adischarge portion, ie an interrupted portion adapted to allow the sliding support 25 to be fitted therein.

[0090] Once assembled into the vertical slide rail 29, the sliding support 25 is attached to the movable column 5 at a predetermined position according to the height value.

[0091] To this end, the mobile column 5 comprises a second graduated positioning scale 30 defined at the lower end 20 and adapted to allow the sliding support 25 to be positioned according to a height value.

[0092] Each of the graduated positioning scales 28, 30 includes a set of associated reference values ​​corresponding to the set of height values.

[0093] Furthermore, at the graduated positioning scales 28 , 30 , the mobile upright comprises a plurality of drill bits 13 which, due to their positioning, are suitable for facilitating the correct attachment of the lateral support arm 21 and of the sliding support 25 .

[0094] In order to facilitate the movement of the movable door leaf 7 between the closed configuration and the open configuration, the moving device 8 includes a pulley assembly 18 mounted on the top of each fixed column 2.

[0095] The pulley assembly 18 also supports a hinge pin 27 to which the transverse support arm 21 is hinged.

[0096] Each pulley assembly 18 is provided with at least one pulley 31 around which a rope 32 connected to the corresponding movable column 5 and at least one counterweight is at least partially wound.

[0097] The function of the counterweight is to facilitate the movement of the movable door leaf 7 during the process of opening and closing the main door 10.

[0098] In detail, the mobile device 8 comprises at least one rope assembly 33 including a rope 32 provided with one end associated with a rope support 34 attachable to a respective mobile column 5 and with an opposite end associated with a respective counterweight.

[0099] In the context of the present invention, the term "rope" refers to any flexible element which, when wound around the pulley 31, can perform the function of a proper rope, as well as belts, chains and the like.

[0100] Conveniently, the rope support 34 may be attached to the movable column 5 at a predetermined distance D from the sliding support 25 .

[0101] The rotational arrangement of the pulley 31 and the movement of the associated counterweight is preferably achieved in the following manner: the moving device 8 further comprises a motor assembly 15 .

[0102] The motor assembly 15 includes a motor 35 (not shown in detail) adapted to rotate a drive shaft.

[0103] The drive shaft extends from the motor 35 at the end of the fixed beam 3 to the pulley assembly 18.

[0104] Finally, the kit 1 comprises a panel 6 which can be associated with a mobile upright 5 so as to define a mobile door leaf 7 .

[0105] Each panel 6 is substantially rectangular, and has two long sides opposite to each other and two short sides opposite to each other.

[0106] Each panel 6 comprises at least one of a connecting portion 36 and a shell portion 37 which are complementary to each other and are suitable for allowing each panel 6 to be associated with at least one adjacent panel 6 .

[0107] Specifically, the connection portion 36 and the housing portion 37 are defined on at least one long side of the panel 6 .

[0108] Once the movable columns 5 have been assembled to their respective fixed columns 2 , the panels 6 can be connected to the movable columns 5 .

[0109] According to another aspect, the invention also relates to a method for assembling a primary door for closing a compartment, in particular a garage compartment.

[0110] The method first comprises the stage of bringing at an entrance of a compartment a kit 1 according to one or more of the embodiments described above.

[0111] In this regard, the method includes measuring the inlet and detecting width and height values.

[0112] Next, the method comprises a phase of cutting the fixed crossbeam 3 at the at least one trimmable portion 9 according to the width value.

[0113] In more detail, the cutting phase of the fixed crossbar 3 consists in cutting the two trimmable portions 9 into portions of equal length.

[0114] Next, the method comprises a stage of cutting the fixed columns 2 and the movable columns 5 at the relevant trimmable portions 9 according to the height values.

[0115] Then, the fixing columns 2 and the fixing beams 3 are assembled with each other to obtain the fixing frame 4, and then the fixing frame 4 is attached to the entrance.

[0116] The assembly of the fixing frame 4 and its attachment to the inlet are carried out by means of fasteners of known type.

[0117] At this point, the method comprises a stage of installing the movement device 8 between the fixed column 2 and the movable column 5 .

[0118] Finally, the method comprises a stage of applying the panel 6 to the mobile upright 5 to obtain a mobile door leaf 7 .

[0119] According to the embodiment of the kit 1 shown in the figures, the method also comprises at least one stage of cutting the transverse support arms 21 at the associated trimmable portions 9 according to the height value.

[0120] Advantageously, each cutting stage comprises:

[0121] - at least one step of identifying, on the graduated reference scale 11, a relevant reference value corresponding to one of the height values ​​or the width values; and

[0122] - at least one step of cutting the trimmable portion 9 at the relevant reference value.

[0123] The cutting step is performed at the corresponding cutting reference 12 .

[0124] Furthermore, the method comprises at least one stage of positioning the first end 22 on the mobile column 5 .

[0125] The positioning phase of the first end 22 includes:

[0126] - at least one step of identifying, on the first graduated scale 28, a relevant reference value corresponding to the height value; and

[0127] - at least one step of articulating the first end 22 at a relative reference value.

[0128] Specifically, the small block 26 is slid until it reaches a reference value and then connected to the movable column 5 .

[0129] Furthermore, the method comprises at least one stage of positioning the sliding support 25 on the mobile column 5 .

[0130] The stages of positioning the sliding support 25 include:

[0131] - at least one step of identifying, on the second graduated scale 30, a relevant reference value corresponding to the height value; and

[0132] - At least one step of fixing the sliding support 25 at the relevant reference value.

[0133] In detail, the sliding support 25 is first assembled into the vertical slide rail 29 through the unloading portion, and then slid along the slide rail until it reaches a reference value, and then attached to the movable column 5.

[0134] Next, the method includes attaching the rope assembly 33 to the moving column 5 at a predetermined distance from the sliding support 25 , and connecting the rope 32 to the counterweight through the pulley assembly 18 .

[0135] Finally, the panel 6 is trimmed according to the actual size of the movable door leaf 7 and assembled onto the movable column 5 .

[0136] It has been established in practice that the described invention achieves the intended purposes and particular emphasis has been placed on the fact that the kit of the invention for assembling a main door for closing a compartment makes it possible to dispense with the need for on-site measurements prior to manufacturing the kit.

[0137] Thanks to the trimmable sections and the graduated reference ruler, the various components can be prepared on site and adapted to the actual dimensions of the entrance.

[0138] Furthermore, the kit according to the invention allows fast and precise assembly and installation operations on site.

[0139] In fact, this kit allows installation and measurement of the access to the compartment to be carried out simultaneously.

[0140] Furthermore, the kits may be produced and stocked according to standard predetermined sizes.

[0141] Finally, the kit makes it possible to ensure that the moving members of the movable door leaf operate correctly at all times.

[0142] In fact, the positioning of the various moving components can also be adjusted according to the actual size.

Claims

1. A kit (1) for assembling a primary door for closing an opening of a compartment, in particular a garage compartment, the kit (1) comprising: - at least two fixed uprights (2) and at least one fixed crossbeam (3), which can be associated with each other to define a fixed frame (4), which can be attached to the entrance of the compartment, wherein the entrance has associated reference dimensions; - at least two movable uprights (5) and a plurality of panels (6) capable of being associated with the movable uprights (5) to define a movable door leaf (7); - a moving device (8) capable of being associated between the movable upright (5) and the fixed frame (4) and suitable for determining the movement of the movable door leaf (7) relative to the fixed frame (4); The kit (1) can be assembled together to form a main door (10); Characterized in that at least one of the fixed column (2), the fixed crossbeam (3) and the movable column (5) is made according to a corresponding predetermined standard size greater than the reference size and includes at least one associated trimmable portion (9), the trimmable portion (9) being provided with at least one graduated reference scale (11), the graduated reference scale (11) being adapted to allow the trimmable portion (9) to be cut according to the reference size.

2. The kit (1) according to claim 1, characterized in that The reference dimension comprises at least one height value and one width value, and the graduated reference scale (11) comprises a set of reference values ​​corresponding to one of a set of height values ​​and a set of width values.

3. Kit (1) according to one or more of the preceding claims, characterized in that The fixed crossbeam (3) comprises two end extensions (14), each of the end extensions (14) defining an associated trimmable portion (9).

4. Kit (1) according to one or more of the preceding claims, characterized in that Each of the fixed columns (2) comprises an upper extension (16) and a lower extension (17), wherein the lower extension (17) is opposite to the upper extension (16) and defines a related trimmable portion (9).

5. Kit (1) according to one or more of the preceding claims, characterized in that Each of the movable columns (5) comprises an upper end (19) and a lower end (20) opposite to the upper end (19), wherein the upper end (19) defines an associated trimmable portion (9).

6. Kit (1) according to one or more of the preceding claims, characterized in that The mobile device (8) comprises: - at least two transverse support arms (21), each of which has a first end (22) and a second end (24), the first end (22) being hinged to a middle region (23) of the corresponding movable column (5), and the second end (24) being hinged to the top of the corresponding fixed column (2); and - at least two sliding supports (25), each of which can be fixed to a corresponding movable column (5) and can be associated with a corresponding fixed column (2) by sliding; Each of the lateral support arms (21) comprises at least one associated trimmable portion (9), the at least one associated trimmable portion (9) being provided with the graduated reference scale (11) and being defined at the first end (22).

7. Kit (1) according to one or more of the preceding claims, characterized in that The movable column (5) comprises a first graduated positioning scale (28) which is defined at the intermediate region (23) and is adapted to allow the first end (22) to be positioned according to the height value.

8. Kit (1) according to one or more of the preceding claims, characterized in that The movable column (5) comprises at least one second graduated positioning scale (30), which is defined at the lower end (20) and is suitable for allowing the sliding support (25) to be positioned according to the height value.

9. Kit (1) according to one or more of the preceding claims, characterized in that Each of the graduated positioning scales (28, 30) includes a set of associated reference values ​​corresponding to the set of height values.

10. Kit (1) according to one or more of the preceding claims, characterized in that The moving device (8) comprises at least one rope assembly (33), the at least one rope assembly (33) comprising a rope (32), the rope (32) being arranged with one end associated with a rope support (34) attachable to a corresponding movable column (5), and the opposite end of the rope (32) being associated with a corresponding counterweight, the rope support (34) being attachable to the movable column (5) at a predetermined distance (D) from the sliding support (25).

11. A method for assembling a primary door for closing an opening of a compartment, in particular a garage compartment, comprising the following stages: - carrying the kit (1) according to one or more of the preceding claims to an entrance of the compartment; - measuring the inlet and detecting the width value and the height value; - cutting the fixed beam (3) at the at least one trimmable portion (9) according to the width value; - cutting the fixed column (2) and the movable column (5) at the relevant trimmable portion (9) according to the height value; - Assembling the fixed columns (2) onto the fixed beams (3) to obtain the fixed frame (4); - fixing the fixing frame (4) to the inlet; - installing the moving device (8) between the fixed column (2) and the movable column (5); - Applying said panel (6) to said movable upright (5) to obtain said movable door leaf (7).

12. The method according to claim 11, characterized in that According to said height value, said method comprises at least one stage of cutting said transverse support arm (21) at the relevant trimmable portion (9).

13. The method according to one or more of claims 11 and 12, characterized in that Each of the cutting stages comprises: - at least one step of identifying, on said graduated reference scale (11), a relevant reference value corresponding to one of said height value and said width value; and - at least one step of cutting said trimmable portion (9) at said associated reference value.

14. Method according to one or more of claims 11 to 13, characterized in that The method comprises at least one stage of positioning the first end (22) on the movable column (5), wherein the at least one stage of positioning the first end (22) on the movable column (5) comprises: - at least one step of identifying, on said first graduated scale (28), a relevant reference value corresponding to said height value; and - at least one step of articulating said first end (22) at said relative reference value.

15. Method according to one or more of claims 11 to 14, characterized in that The method comprises at least one stage of positioning the sliding support (25) on the movable column (5), wherein the at least one stage of positioning the sliding support (25) on the movable column (5) comprises: - at least one step of identifying, on said second graduated scale (30), a relevant reference value corresponding to said height value; and - at least one step of fixing said sliding support (25) at said relative reference value.

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