EP4155157A1 - Device for adjusting a staircase between two floors of a structure - Google Patents

Abstract

The adjustment device (30) comprises a member (32) for connecting the staircase (24) with an upper floor (18), the connecting member (24) being intended to be fixed to the upper floor (18) , and the connecting member (32) comprising a pivot connection (34) intended to be connected to the staircase (24).

Description

The present invention relates to a device for adjusting a staircase between two floors of a structure.

The structure has a lower floor, including a lower floor, and an upper floor, including an upper floor. In order to access the upper floor, a staircase is generally arranged between the lower floor and the upper floor.

The structure is for example a two-story vehicle, in particular a railway vehicle.

During the construction of such a vehicle, the frame of the vehicle is designed first, and the staircase is then added to this frame.

However, it is common for the height of the second floor, relative to the first floor, to vary from one vehicle to another, due to differences in manufacture and assembly. On the other hand, the stairs are manufactured in a standard way, so that it is necessary to adapt the arrangement of the stairs in relation to the floors.

To this end, vehicles are already known in the state of the art comprising means for adjusting the position of these stairs.

These adjustment means are for example between the staircase and the lower floor, or alternatively between the staircase and the upper floor. Such adjustment means are not, however, entirely satisfactory, because they imply that the first step (starting from the lower floor), or in the aforementioned variant the last step, is higher than the others due to the compensation.

When this difference in height is too great, this can cause a risk for a user who is not wary of this difference in height. Thus, the EN 16584-1 standard of April 2017 imposes a difference in height between the steps of less than 2.5 mm.

Other known adjustment means allow adjustment of the height of each step. Such means make it possible to comply with the aforementioned standard, but they are particularly expensive and complex to implement.

The object of the invention is in particular to remedy these drawbacks, by proposing adjustment means making it possible to adjust a staircase so that the height of its steps complies with standard EN 16584-1, and this in a simple manner. and economical.

To this end, the subject of the invention is in particular a device for adjusting a staircase between two floors of a structure comprising a lower floor comprising a lower floor, and an upper floor comprising an upper floor, characterized in that the adjustment device comprises a member for connecting the staircase with the upper floor, the connecting member being intended to be fixed to the upper floor, and the connecting member comprising a pivot link intended to be connected to the staircase.

According to the invention, the position of the staircase is adjusted by inclination of the staircase around the pivot connection.

It should be noted that, depending on the adjustment made, the inclination of the steps may vary from one vehicle to another. However, such an inclination is negligible and of no particular consequence.

Optionally, the adjustment device comprises a wedging member, intended to be carried by the lower floor and to receive a lower part of the staircase.

Thus, the adjustment by inclination is complementary to an adjustment by wedging member, so that the adjustment by wedge wedging member does not exceed the maximum difference in step heights imposed by standard EN 16584-1.

• L'organe de liaison comporte une partie d'appui destinée à venir en contact avec une cloison verticale de la structure.
• Le dispositif d'ajustement comporte des moyens de fixation de l'escalier avec le plancher inférieur.
• Les moyens de fixation fixent l'organe de calage à l'escalier.

An adjustment device according to the invention may also comprise at least one of the following characteristics.

• The connecting member comprises a support part intended to come into contact with a vertical partition of the structure.
• The adjustment device comprises means for fixing the staircase with the lower floor.
• The fixing means fix the wedging member to the staircase.

The invention also relates to a two-storey vehicle, in particular a railway vehicle, comprising a lower floor comprising a lower floor, and an upper floor comprising an upper floor, the vehicle comprising a staircase connecting the lower floor to the upper floor, characterized in that the vehicle comprises an adjustment device as defined previously, in which the connecting member is fixed to the upper floor and connected to the staircase by the pivot connection.

• Le véhicule comprend un dispositif d'ajustement, dans lequel l'organe de calage est porté par le plancher inférieur et reçoit une partie inférieure de l'escalier.
• Le plancher inférieur comprend un sous-plancher structurel, et un sur-plancher d'aménagement recouvrant le sous-plancher structurel, l'organe de calage étant porté par le sous-plancher structurel.

A vehicle according to the invention may further comprise at least one of the following characteristics:

• The vehicle comprises an adjustment device, in which the wedging member is carried by the lower floor and receives a lower part of the staircase.
• The lower floor comprises a structural sub-floor, and a development over-floor covering the structural sub-floor, the wedging member being carried by the structural sub-floor.

• montage de l'organe de liaison sur le plancher supérieur,
• assemblage de l'escalier avec l'organe de liaison,
• pivotement de l'escaler autour de la liaison pivot, jusqu'à ce qu'une partie basse de l'escalier vienne reposer sur le plancher inférieur.

The invention finally relates to a method for assembling a staircase between two floors of a structure comprising a lower floor comprising a lower floor, and an upper floor comprising an upper floor, characterized in that it is implemented at means of an adjustment device as defined previously, and in that it comprises the following successive steps:

• assembly of the connecting device on the upper floor,
• assembly of the staircase with the connecting device,
• pivoting of the staircase around the pivot connection, until a lower part of the staircase comes to rest on the lower floor.

Advantageously, the staircase comprising steps, including a first step counted from the lower part of the staircase, the method includes a step of choosing a wedging member, such as the difference between the height of the first step relative to the lower floor and the height of each other step is less than 2.5 mm.

• [Fig 1] La figure 1 est une vue schématique de profil d'une structure comprenant un escalier reliant deux étages de cette structure, l'escalier étant ajusté au moyen d'un dispositif d'ajustement selon un exemple de mode de réalisation de l'invention, ;
• [Fig 2] La figure 2 est une vue schématique de profil d'une partie inférieure de l'escalier de la Figure 1.

Various aspects and advantages of the invention will be highlighted in the following description, given solely by way of non-limiting example and made with reference to the appended figures, among which:

• [ Fig 1 ] There figure 1 is a schematic side view of a structure comprising a staircase connecting two floors of this structure, the staircase being adjusted by means of an adjustment device according to an exemplary embodiment of the invention;
• [ Fig 2 ] There figure 2 is a schematic profile view of a lower part of the staircase of the Figure 1 .

We have represented, on the figure 1 , a structure 10, comprising a lower stage 12 and an upper stage 14.

For example, the structure 10 is a vehicle, in particular a railway vehicle, or as a variant a road, air or maritime vehicle.

The lower floor 12 comprises a lower floor 16. The lower floor 16, shown in more detail in the picture 2 , comprises a structural sub-floor 16a, and a development over-floor 16b covering the structural sub-floor 16a.

Upper floor 14 has an upper floor 18. Upper floor 18 has an access opening 20.

Advantageously, the structure 10 comprises a vertical partition 22, extending vertically between the lower floor 16 and the upper floor 18. Preferably, the access opening 20 is located close to this vertical partition 22.

The structure 10 comprises a staircase 24, comprising a structural support 26 carrying steps 28.

In the present description, the staircase 24 will be described as being oriented from the bottom upwards. Thus, among these steps 28, we will call "first step 28a" the step closest to the lower floor 16, and "last step 28b" the closest step of the upper floor 18. Furthermore, the “next step” will refer to the step immediately adjacent above the step in question.

Each step 28 has an upper surface 29. The distance, in a direction perpendicular to the upper surface 29 of one step 28, between this upper surface 29 and the upper surface 29 of the following step, is called "height H of the step". 28”.

The height H1 of the first step 28a is the distance, in a direction perpendicular to the lower floor 16, between this lower floor 16 and the upper surface 29 of the first step 28a. More precisely, this height H1 is considered from an upper surface of the development overfloor 16b.

The height H2 of the last step 28b is the distance, in a direction perpendicular to the upper surface of the last step 28b, between this upper surface of the last step 28b and an upper surface of the upper floor 18.

The heights H of all the steps 28 are equal, these being established during the design of the staircase 24.

On the other hand, the heights H1 and H2 depend on the adjustment of the staircase 24 with respect to the lower 16 and upper 18 floors.

According to EN 16584-1, the difference between the step heights must be less than 2.5 mm.

In other words, the difference between the height H1 and the height H must be less than 2.5 mm, the difference between the height H1 and the height H2 must be less than 2.5 mm, and the difference between the height H and the height H2 must be less than 2.5 mm.

For this purpose, the structure 10 comprises an adjustment device 30 according to an exemplary embodiment of the invention.

The adjustment device 30 comprises a member 32 for connecting the staircase 24 with the upper floor 18. The connecting member 32 is fixed to the upper floor 18, in particular under the floor 18, and the connecting member 32 comprising a pivot link 34 connected to the staircase 24.

It will be noted that the connecting member 32 is configured so that the height H2 of the last step 28b is equal to the height H of the other steps 28, to within 2.5 mm.

This height H2 is generally provided from the design of the connecting member 32, the manufacturing tolerances of this connecting member 32 making it possible to respect the aforementioned margin of error of 2.5 mm.

Alternatively, the connecting member 32 could be fixed at several different possible heights on the upper floor 18, the fixing height being chosen according to the desired height H2.

Advantageously, the connecting member 32 comprises a support part 35, intended to come into contact with the vertical partition 22. This support part 35 allows the forces to be taken up on the vertical partition 22.

The adjustment device 30 also advantageously comprises a wedging member 36 carried by the lower floor 16, and receiving a lower part 24a of the staircase 24. The purpose of the wedging member 36 is in particular to cancel the defects of height between floors 16a and 16b.

As shown in the picture 2 , the wedging member 36 is preferably attached to the structural subfloor 16a.

Advantageously, the adjustment device 30 comprises means 37 for fixing the staircase 24 with the lower board 16. For example, in the case where the adjustment device 30 comprises a wedging member 36, the fixing means 37 preferably pass through wedging member 36 to attach to structural subfloor 16a. The fastening means 37 not include, for example, rivets or bolts, or any other conceivable means.

The height of the wedging member 36 is chosen according to the desired height H1.

So that the staircase 24 can rest on the wedging member 36 at the chosen height, the staircase 24 is, during its assembly, mobile in rotation around the pivot connection 34. This makes it possible to have a member of wedging 36 of limited height, the difference in height between the lower and upper floors from one structure to another being absorbed by the inclination of the staircase 24.

As a result, the inclination of the steps of the staircase 24 can vary from one structure 10 to another, but this inclination is generally negligible.

It will be noted that the staircase 24 is mounted during an assembly process which will now be described.

• montage de l'organe de liaison 32 sur le plancher supérieur 18, l'organe de liaison 32 étant configuré pour que la hauteur H2 soit sensiblement égale à la hauteur H, c'est-à-dire égale à 2,5 mm près ;
• optionnellement, fixation de l'organe de calage 36 sur le plancher inférieur 16, l'organe de calage 36 étant choisi de sorte que la hauteur H1 soit sensiblement égale à la hauteur H, c'est-à-dire égale à 2,5 mm près, et soit sensiblement égale à la hauteur H2, c'est-à-dire égale à 2,5 mm près ;
• assemblage de l'escalier 24 avec l'organe de liaison 32,
• pivotement de l'escalier 24 autour de la liaison pivot 34, jusqu'à ce qu'une partie basse 24a de l'escalier 24 vienne reposer sur l'organe de calage 36.

The assembly process comprises the following successive steps:

• mounting of the connecting member 32 on the upper floor 18, the connecting member 32 being configured so that the height H2 is substantially equal to the height H, that is to say equal to within 2.5 mm;
• optionally, fixing of the wedging member 36 on the lower floor 16, the wedging member 36 being chosen so that the height H1 is substantially equal to the height H, that is to say equal to 2.5 mm, and is substantially equal to the height H2, that is to say equal to 2.5 mm;
• assembly of the staircase 24 with the connecting member 32,
• pivoting of the staircase 24 around the pivot link 34, until a lower part 24a of the staircase 24 comes to rest on the wedging member 36.

Advantageously, the method includes a step of choosing a wedging member 36, such that the difference between the height H1 of the first step of the staircase relative to the lower floor and the height H, H2 of each other step is lower at 2.5mm

Claims (9)

Device (30) for adjusting a staircase (24) between two floors (12; 14) of a structure (10) comprising a lower floor (12) comprising a lower floor (16), and an upper floor (14 ) comprising an upper floor (18), characterized in that the adjustment device (30) comprises a member (32) for connecting the staircase (24) with the upper floor (18), the connecting member ( 32) being intended to be fixed to the upper floor (18), and the connecting member (32) comprising a pivot connection (34) intended to be connected to the staircase (24). Adjustment device (30) according to claim 1, comprising a wedging member (36), intended to be carried by the lower floor (16) and to receive a lower part (24a) of the staircase (24). Adjustment device (30) according to any one of the preceding claims, in which the connecting member (32) comprises a bearing part (35) intended to come into contact with a vertical partition (22) of the structure (10). Adjustment device (30) according to any one of the preceding claims, comprising means (37) for fixing the staircase to the lower floor (16). Double-decker vehicle, in particular railway vehicle, comprising a lower floor (12) comprising a lower floor (16), and an upper floor (14) comprising an upper floor (18), the vehicle comprising a staircase (24) connecting the floor (16) to the upper floor (18), characterized in that the vehicle comprises an adjustment device (30) according to any one of the preceding claims, in which the connecting member (32) is fixed to the upper floor (18) and connected to the staircase (24) by the pivot link (34). Vehicle according to Claim 5, comprising an adjustment device (30) according to Claim 2, in which the wedging member (36) is carried by the lower floor (16) and receives a lower part (24a) of the staircase (24). A vehicle according to claim 6, wherein the lower floor (16) comprises a structural sub-floor (16a), and a development over-floor (16b) covering the structural sub-floor (16a), the wedging member (36) being carried by the structural sub-floor (16a). Method of mounting a staircase (24) between two floors of a structure comprising a lower floor comprising a lower floor, and an upper floor comprising an upper floor, characterized in that it is implemented by means of a adjustment device according to any one of claims 1 to 4, and in that it comprises the following successive steps: - assembly of the connecting device on the upper floor, - assembly of the staircase with the connecting device, - pivoting of the staircase around the pivot connection, until a lower part of the staircase comes to rest on the lower floor. Assembly method according to Claim 8, by means of an adjustment device according to Claim 2, in which the staircase (24) comprising steps (28), of which a first step (28a) counted from the lower part (24a) of the staircase (24), the method includes a step of choosing a wedging member (36), such as the difference between the height (H1) of the first step (28a) with respect to the lower floor (16) and the height (H1, H2) of each other step (28, 28b) is less than 2.5 mm.

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