Anti-sink device

Abstract

Anti-sinking device comprising: a first guide portion (28), a second guide portion (78), an intermediate guide portion (32), first connecting means (54) between the first guide portion (28) and the intermediate guide portion (32), providing angular deflection and ensuring continuous guidance for a guide element such as a guide roller (30), second connecting means (34, 64) between the intermediate guide portion (32) and the second guide portion (78), forming a bend and ensuring continuous guidance for an element such as a guide roller (30), a locking system with a male part (84) and a female part (88), and fastening elements (44, 78) for the first and second guide portions (28, 78) with their guide groove oriented downwards. (See abstract figure: Figure 2)

Description

Title of the invention: Anti-sinking device

[0001] This disclosure relates to an anti-dive device for the last panel of a side-sliding sectional door and to a side-sliding sectional door equipped with such an anti-dive device. technical field

[0002] The present disclosure relates to sectional doors. It is known to use such a door to close off a relatively large opening, for example, a garage opening in a house. This type of door is most often used when the ceiling height inside the building is limited (compared to a tilt-up door, which requires sufficient overhead clearance). Such a door comprises rigid panels placed side by side and hinged to each other around axes that correspond approximately to two adjacent edges of said panels. This assembly of panels, called a door leaf, is guided by a lower track (fixed to the floor) and an upper track (fixed to the frame), each extending along the opening of the building and into the building, generally at a right angle.The width of the panels is adapted to the radius of curvature of the elbow so that the whole of the panels can take a closed position in which the corresponding opening is then completely closed by said door, as well as an open position allowing passage through the opening, preferably a complete passage.

[0003] In a side-sliding sectional door, there is a "first" panel which is the first element to close the opening when the door moves from its open to its closed position. Opposite this first panel, there is a "last" panel. In most doors of this type, to lock the door in the closed position, the first panel is immobilized. This prevents any movement of the other panels since they are interlocked with each other, the lower rail, and the upper rail which are used to guide the different panels in their lateral movement. Previous technique

[0004] A sectional door, for example, as illustrated in document FR3078094A1. The door described in this document has a first panel shaped like a wicket gate. This allows the door to be partially opened to permit passage, for example, by a person, without having to move the entire door leaf. A locking system for the first panel is described in detail in this document.

[0005] A problem with such a sectional door concerns the closing mechanism at the last panel, that is, the panel that closes the corresponding opening last during a closing movement. This last panel, and more specifically its free vertical edge (opposite the first panel), may have some play. Consequently, when a seal is applied, the gasket used to create this seal may gap and fail to perform its function under optimal conditions.

[0006] Another problem is the locking of this last panel. The door is locked at the level of the first panel and due to the inevitable mechanical tolerances on a door which is generally more than two meters long, a gap may appear at the level of the last panel which is therefore more vulnerable in the event of a malicious act, such as vandalism. Summary

[0007] The present disclosure improves the situation. Its purpose is to provide a device for a sectional door that ensures a good seal even at the last panel. Preferably, this device will also allow for better locking of the last panel, making the sectional door more resistant to break-ins.

[0008] An anti-sinking device is proposed for use with a laterally moving sectional door.

[0009] According to this disclosure, such an anti-sinking device comprises: - a first guide section featuring a first guide groove, - a second guide section featuring a second guide groove, - an intermediate guide portion disposed between the first guide portion and the second guide portion and having an intermediate guide groove, - first connecting means between the first guide portion and the intermediate guide portion, said connecting means linking the first guide portion and the intermediate guide portion such that, on the one hand, the intermediate guide portion is in line with the first guide portion but giving an angular deviation and, on the other hand, said connecting means have a guide groove allowing continuity of guidance for a guide element such as a guide roller, - second means of connection to ensure a link between the intermediate guide portion and the second guide portion, the second means of connection forming a bend between the intermediate guide portion and the second guide portion and having a curved connecting piece whose bending angle is adjustable, with a guide groove allowing continuity of guidance for an element such as a guide roller, and - fastening elements to support the first guide portion and the second guide portion with their guide groove open downwards.

[0010] In this way, a guide for a last leaf panel whose free edge is fitted with a guide roller or similar can be made to bring said roller progressively to the second portion of the guide which is chosen to give the free edge of the last panel a translational movement at the end of the closing stroke (and at the beginning of the opening stroke) and thus to properly control the positioning of the last panel parallel to a corresponding opening.

[0011] The features described in the following paragraphs may optionally be implemented independently of each other or in combination with each other:

[0012] - the curved connecting piece may have a substantially flat, flexible base which extend perpendicularly to the base of the slats, each end of the base having means for connecting to a guide portion, a guide groove being formed in a lateral edge of each slat between the flexible base and the free end of the slat. In this variant, it can also be provided that each slat has, near its free end, on one face a protruding area and on the opposite face a recessed area such that when the base flexes the free ends of the slats approach each other, the protruding areas cooperate with the recessed areas, thus securing the slats together.

[0013] - the first guiding portion and the intermediate guiding portion are carried out in C-shaped profiled parts with similar cross-sections;

[0014] - the first connecting means comprise several first connecting pieces, Each connecting piece has a lower face into which opens a guide groove forming an arc of a circle, two radial faces forming a dihedral angle, and the first connecting pieces are similar. Alternatively, each radial face may have an opening and a projection so as to allow one connecting piece to be fitted with another similar connecting piece;

[0015] - the device further comprises a locking system with a male part cooperating with a female part.

[0016] According to another aspect, a laterally sliding sectional door is proposed comprising: - a first panel, - a final panel, - intermediate panels mounted and hinged between the first panel and the final panel, - a lower guide rail intended to be fixed to a floor, - an upper guide rail having a first straight section, a second straight section and a curved section connecting the first straight section to the second straight section, a guide groove extending along the entire length of the guide rail, characterized in that it further comprises an anti-sinking device as described above, in that the first guide portion of the anti-sinking device is parallel to the first straight part of the upper guide rail, and in that the second guide portion of the anti-sinking device is parallel to the second straight part of the upper guide rail.

[0017] The features described in the following paragraphs may optionally be implemented independently of each other or in combination with each other:

[0018] - the last panel has a guide roller disposed near the vertical edge free from said last panel, said roller being engaged in a guide groove of the anti-drilling device, in that one part (male part or female part) of the locking device is fixed on the last panel, the other part (female part or male part) being fixed so as to be fixed relative to the lower guide rail of the sectional door;

[0019] - each first connecting piece is supported by the curved part of the rail superior guidance. Brief description of the figures

[0020] Other features, details and advantages will become apparent upon reading the detailed description below, and upon analysis of the accompanying drawing, in which: Fig. 1

[0021] [Fig.l] shows in perspective an example of a lateral moving sectional door according to an embodiment. Fig. 2

[0022] [Fig.2] partially shows an anti-sinking device associated with the door sectional of [Fig.1], enlarged scale and from a different point of view. Fig. 3

[0023] [Fig.3] shows in perspective a first connecting device between a first rail secondary and an intermediate secondary rail of the anti-sinking device of [Fig.2], Fig. 4

[0024] [Fig.4] shows an exploded view of the first linking device of the [Fig.3]. Fig. 5

[0025] [Fig.5] shows in perspective the assembly of a rail and its cooperation with a roller. Fig. 6

[0026] [Fig.6] shows a top view at enlarged scale of an element of the first device of the connection between figures 3 and 4. Fig. 7

[0027] [Fig.7] shows in perspective a second connecting device intended to connect the rail intermediate secondary rail to a second secondary rail. Fig. 8

[0028] [Fig.8] shows the two linking devices of figures 3, 4, 5 and 6. Fig. 9

[0029] [Fig.9A] shows a bendable element of the second connecting device in perspective at an enlarged scale.

[0030] [Fig.9B] shows a variant embodiment of the element of [Fig.9A] in a curved position. Fig. 10

[0031] [Fig. 10] shows, in perspective and at an enlarged scale, an accessory used in cooperation with the element illustrated in figures 9A and 9B to limit a bending of said element. Fig. 11

[0032] [Fig. 11] shows a locking device for an anti-removal device of the previous figures. Description of the implementation methods

[0033] Reference is now made to [Fig. 1]. In this figure, a person skilled in the art will recognize a side-sliding sectional door. Figures 1 and 2 show a first wall 2 and a second wall 4 arranged at right angles (another relative orientation is possible, but this is the most common configuration). The second wall 4 has an opening (concealed by the sectional door), and the sectional door is designed to open and close this opening.

[0034] In Figures 1 and 2, the sectional door opens to the left, while in Figures 3 to 11 the illustrated door opens to the right. The assembly is the same but with mirror symmetry.

[0035] The sectional door comprises several panels: a first panel 8, a final panel 10, and intermediate panels 12. The first panel 8 is the one that can move along the entire length of the opening. These panels slide, on the one hand, on a lower rail 14 fixed to a floor 16 and, on the other hand, guided and held by an upper rail 18 which, as illustrated here, is fixed to the first wall 2 and the second wall 4, but which could also, for example, be suspended from a ceiling (not illustrated here). In the open position, the panels of the sectional door are all along the first wall 2, while in the closed position ([Fig. 1]) of the sectional door, all the panels are located along the second wall 4 opposite the opening so as to close it off, preferably in a watertight manner.

[0036] A person skilled in the art is familiar with such a sectional door and its operation. Document FR3078094, for example, describes such a door. The prior art door in that document, as well as the door illustrated here, includes a wicket gate that forms the first panel 8. In the present disclosure, the first panel 8 does not necessarily constitute a wicket gate. Since such a door is known, the "classic" prior art features are therefore not described in detail here (articulation between the panels, guidance on the lower rail, guidance at the level of the upper rail, shape of the rails, etc.).

[0037] It will be assumed hereafter that the first wall 2 and the second wall 4 are vertical walls. The panels also extend vertically. The floor 16 is assumed to be horizontal. The lower rail 14 and the upper rail 18 thus extend in a substantially horizontal plane.

[0038] Optionally, the sectional door illustrated in Figures 1 and 2 is motorized. This disclosure is not limited to this type of door but applies equally well to a manual or motorized system. The motorization consists of providing a travel rail 20 on the first wall 2, preferably approximately halfway up the door, arranged horizontally. A motorized carriage 22 can move along (at least along part of the length of said rail) by means of an electric motor and is connected by a connecting rod 24 to the last panel 10. The motorized carriage 22 then pushes the last panel 10 to close the sectional door and pulls the last panel 10 to open the sectional door.

[0039] As can be seen in [Fig. 1], the first panel 8 is equipped with a lock 26, ensuring at least three-point locking of this first panel 8. However, in a prior art sectional door, it is not known to provide locking at the level of the last panel 10. The following description provides the means to achieve, firstly, precise positioning of the last panel 10 and, secondly, locking of this last panel 10, this locking occurring automatically when the sectional door is closed (and unlocking automatically when the door is opened). To achieve this precise positioning and locking of the last panel 10, it is proposed to provide a specific guide for this last panel 10 and a device called an anti-push device, which provides both guidance and, advantageously, locking of the last panel 10. This device is described below and illustrated in the figures..

[0040] Figure 2 shows secondary guiding means for the sectional door. These guiding means are called secondary because they complement the means guidance already known to the person in the trade for opening and closing the sectional door.

[0041] The guiding means for the anti-sinking device, intended for guiding the last panel 10, include in particular: - a first fixed secondary rail 28 extending along the first wall 2 and defining a first guide section for a roller 30 (figures 5 and 11), - means for connecting and changing direction, - an intermediate secondary rail 32 inclined relative to the first secondary rail 28 (and to the first wall 2), and - a curved connecting piece 34 with an adjustable bending angle to create an additional deviation adapted to the size of the spandrel.

[0042] The first secondary rail 28 and the intermediate secondary rail 32 are, for example, made from the same profile. A section of this profile can be seen in [Fig. 4]: it is a profile with a substantially flat (and horizontal) base 36 and an overall C-shape, with the opening of the profile facing downwards. The space defined by the inside of the arms of the C of the first secondary rail 28 thus forms a guide groove 37 for receiving the roller 30.

[0043] In the illustrated embodiment, the upper rail 18 of the sectional door is to be fixed to support profiles. A first support profile 38 is fixed horizontally to the first wall 2, and a second support profile 40 is fixed horizontally to the second wall 4 (at the same height as the first support profile 38). These profiles are similar and are such that, when fixed to their respective walls, a groove 42 is formed in the upper part of the profile. In the example shown in the drawing, the groove 42 is provided against the wall to which the support profile is fixed.

[0044] As can be seen in Figures 3 and 4, for example, the first support profile 38 is to be fixed along the first wall 2. First fixing pieces 44 are then provided, each ensuring the fixing of both the upper rail 18 and the first secondary rail 28. These first fixing pieces 44 are, in the illustrated example, profiled pieces comprising: - a vertical wing 46 with a shape adapted to cooperate with the groove 42, - a rectangular dwelling unit 48, and - a 50mm stirrup-shaped clamp open downwards to receive the upper rail 18 by clipping.

[0045] First fixing pieces 44 are regularly provided along the first support profile 38. The first secondary rail 28 is held under the housing 48 by means of a shim clip 52 (Figures 4 and 5) as shown in more detail in [Fig. 5]. In this [Fig. 5], parts of the anti-sinking device have been removed to allow observation of the interaction between, in particular, the first fixing piece 44, the first secondary rail 28 and the shim clip 52. This figure also shows the roller 30 in the first secondary rail 28 as well as the means of fixing this roller 30 on the last panel 10. As can be seen in [Fig.5], the shim clip 52 has two elastic tabs which cooperate with the lower face of the housing 48 so as to hold under the lower face of the housing 48 a wedge with retaining tabs of shape adapted to the first secondary rail 28 to hold it against the clamp 50 carrying the upper rail 18.

[0046] As is known, as mentioned for example in the preamble, the upper rail 18 has a first straight section (along the first wall 2) and a second straight section (along the second wall 4), the two straight sections being connected by a curved section. The curved section is most often an arc forming approximately a quarter circle. The upper rail 18 can be obtained by bending a profiled rail.

[0047] The first secondary rail 28 extends parallel along the first straight part of the upper rail 18, for example up to the limit between the first straight part and the curved part of the upper rail 18. The guide groove formed by the first secondary rail 28 is then extended by first connecting pieces 54 (figures 3, 4 and 6).

[0048] Figure 3 illustrates how the first connecting pieces are intended to be attached. 54 on the curved part of the upper rail 18. As can be seen in [Fig. 4], which is an exploded view showing the first connecting pieces 54 in perspective, each of these pieces has a clip-like shape 56 on one lateral face for cooperating with the upper rail 18. Each first connecting piece 54 also has a substantially hollow body. This body has two radial faces 60 (relative to the curve of the upper rail 18) which, in top view ([Fig. 6]), form a dihedral angle on the order of one degree to a few degrees. The lower face of the body is grooved with a groove profile corresponding to the guide groove 37. A projection 62 extends from each radial face 60. The projections 62 on the two radial faces 60 are offset so that two first connecting pieces 54 can fit into each other as illustrated in [Fig. 3].These first connecting pieces 54 then form an arc-shaped assembly, the angle of this arc depending on the number of pieces nested within each other. The projections 62 and the housing 48 of a first fixing piece are adapted to each other so that a projection 62 can be inserted into the housing in a tight fit and so that the groove made in the body 58 extends the guide groove 37 of the first secondary rail 28 mounted under the housing 48.

[0049] A second connecting piece 64 is provided to link a set (possibly consisting of a single piece) of first connecting pieces 54 fitted together one inside the other and the intermediate secondary rail. This second connecting piece 64 has, on the one hand, a face with a projection 62 so as to be able to cooperate with a first connecting piece 54 and fit into it and, on the other hand, a lower housing 66 to receive an end of the intermediate secondary rail 32 so as to achieve a continuity of the guide groove 37.

[0050] The other end of the intermediate secondary rail 32 is connected to the curved connecting piece 34 (in particular Figures 7 to 9). This curved connecting piece 34 has a flexible base 70 from which extend slats 72 and two connecting ends 74, each with a projection 62 similar to the projections of the first connecting pieces 54 and the second connecting piece 64. In a top view, the curved connecting piece 34 at rest, i.e., unbent, resembles a comb. The curved connecting piece 34 is designed to be bent in such a way that the free ends of the slats 72 come closer together. These slats 72 are designed to be able to interlock with each other to form a rigid assembly ([Fig. 9B]).Thus, each slat 72, near its free end, has a raised relief on one face opposite a neighboring slat and a recessed relief on its opposite face, such that a raised relief on one slat 72 can fit into a recessed relief on a neighboring slat when the flexible base 70 bends. The interaction between the slats 72 in the bent position prevents any twisting of the bent connecting piece 34. In the illustrated embodiment, the raised parts are ribs extending parallel to the flexible base 70, and the recessed parts are corresponding grooves also parallel to the flexible base 70.

[0051] To ensure the continuity of the guide groove, the connecting ends 74 and each of the slats 72 are cut to reproduce the section of the guide groove and allow the passage / guidance of the roller 30.

[0052] The connecting ends 74 can cooperate with a second connecting piece 64. Such a second connecting piece 64 is then used to connect the intermediate secondary rail 32 to the curved connecting piece 34.

[0053] To limit the bending of the curved connecting piece 34, one or more inter-slat pieces 76 are provided for use ([Fig. 10]). Depending on the required bending angle, inter-slat pieces 76 are inserted between two slats 72. Preferably, these inter-slat pieces 76 are first inserted between a slat 72 and a connecting end 74, more precisely the connecting end opposite the intermediate secondary rail 32. If several inter-slat pieces 76 are used, they will be inserted starting from the connecting end 74 opposite the intermediate secondary rail, fitting successively into the gaps between the slats 72.

[0054] An inter-lamella piece 76 is illustrated in [Fig. 10]. Such a piece essentially takes the form of a lamella, with, like each lamella a cutout for the passage of the roller 30, a raised part on one face and a raised part on the opposite face.

[0055] Finally, the curved connecting piece 34 is connected to an end piece 78 fixed to the second support profile 40. This end piece 78 is fixed to the second support profile 40, for example, by means of a vertical flange cooperating with the groove 42 described above. The connection of this end piece 78 with the curved connecting piece 34 is advantageously achieved by interlocking, and this end piece 78 advantageously has a projection 62 and a recess to receive the corresponding projection 62 of the connecting end 74 of the curved connecting piece.

[0056] The curved connecting piece 34 is shown in curved position in figures 2 and 9B while in the other figures it is at rest, without curvature.

[0057] Figure 9B shows an alternative embodiment of the curved connecting piece 34 (compared to Figure 9A). The difference here lies in the connection ends 74. The curved connecting piece 34 is intended to be connected to the connecting pieces 64 (which must be adapted accordingly) by a mortise and tenon joint. The assembly of the elements with this type of joint is achieved in a vertical (or radial) movement in the installed position, whereas for the other illustrated parts, the connection between the parts is achieved by longitudinal interlocking (i.e., horizontally in the installed position). From an ergonomic point of view, it is preferable to have only one type of joint (mortise and tenon, interlocking, or other) between the different parts of the system, but a combination of these is also possible.

[0058] Fig. 11 illustrates the mounting of the roller 30 on the last panel 10. This figure illustrates the frame of the last panel 10. The roller 30 is mounted at the end of an axle 80 held in a bearing made on a cradle 82 fixed on the last panel 10. It can be seen that the axle 80 is offset relative to the last panel 10: on the one hand, it is offset beyond the edge of the last panel 10 opposite the other panels and, on the other hand, it is offset towards the outside of the sectional door, that is to say towards the first wall 2 or the second wall 4.

[0059] Figure 11 also illustrates locking means with a male element cooperating with a female buttonhole-shaped part. Here, the male part is formed by a screw 84 mounted in an anti-pull-out support 86 fixed to the edge of the last panel 10 opposite the other panels of the sectional door. The head of the screw 84 protrudes from the outer face of the last panel 10 and cooperates with the female buttonhole-shaped part 88, which has a through slot for receiving the shank of the screw, the head of the screw acting as a button. in the buttonhole. The buttonhole 88 can be fixed directly on the second wall 4 or on a support profile (solution illustrated) which can for example be similar to the first support profile 38 or the second support profile 40 but oriented vertically. Industrial application

[0060] The proposed device provides an original way of guiding the free edge of the last panel 10 to control its trajectory and ensure a straight movement of this free edge at the end of the sectional door's closing cycle (in known prior art systems, this free edge at the end of closing most often describes an arc). The proposed device is also suitable for reduced spans, the span being, in the description above, the distance between the vertical edge of the opening 6 and the first wall 2.

[0061] The device, during the closing movement of the sectional door, guides the free edge of the last panel 10 initially linearly and parallel to the first wall as long as the roller 30 is in the first secondary rail 28. As it approaches the second wall, the free edge is deflected towards the opening: its trajectory is deflected by a few degrees (for example, by an angle between 2 and 30°). The roller is then guided in the intermediate secondary rail. Next, in the immediate vicinity of the second wall, the roller enters the curved connecting piece, follows an arc-shaped trajectory, and the free edge of the last panel 10 is deflected again to begin a linear movement (preferably parallel to the second wall) enabling locking / hooking.At the end of its travel, possibly before the roller exits the curved connecting piece, as well as in the terminal piece, the roller follows a straight trajectory, parallel to the second wall and tangent to the opening. Locking can be achieved using any type of locking mechanism (bolt / strike plate, screw / buttonhole, or other), and multiple locking points can be implemented, for example, at the bottom and middle of the door.

[0062] The device can adapt to virtually any situation. Thanks to its modularity, it can adapt to walls that are not perpendicular, and to spandrels of all sizes, even small ones. The modular kinematics ensures a tangent movement to the opening by adapting the specific approach trajectory to each spandrel value (and angle between the two walls).

[0063] With the system described above, each panel moves along its support / upper rail (possibly guided by a lower rail). Only the last panel has a specific guide that ensures a clean approach trajectory in order to achieve a guide tangent to the opening.

[0064] The anti-push device described here allows the last panel 10 of the sectional door described to be locked by means of a locking device. Locking occurs automatically when the sectional door is closed, and unlocking occurs automatically when the sectional door is opened.

[0065] This disclosure is not limited to the example embodiment and variants described above, only as examples, but encompasses all variants that a person skilled in the art may consider within the framework of the protection sought.

Claims

Demands

1. An anti-dive device for cooperating with a laterally sliding sectional door, characterized in that it comprises: - a first guide portion (28) having a first guide groove, - a second guide portion (78) having a second guide groove, - an intermediate guide portion (32) disposed between the first guide portion (28) and the second guide portion (78) and having an intermediate guide groove, - first connecting means (54) between the first guide portion (28) and the intermediate guide portion (32), said connecting means (54) linking the first guide portion (28) and the intermediate guide portion (32) such that, on the one hand, the intermediate guide portion (32) is in line with the first guide portion (28) but with an angular deflection and, on the other hand,said connecting means (54) have a guide groove to ensure continuous guidance for a guide element such as a guide roller (30), - second connecting means (34, 64) to ensure a connection between the intermediate guide portion (32) and the second guide portion (78), the second connecting means forming an elbow between the intermediate guide portion (32) and the second guide portion (78) and having a curved connecting piece (34) whose bending angle is adjustable, with a guide groove to ensure continuous guidance for an element such as a guide roller (30), and - fixing elements (44, 78) to support the first guide portion (28) and the second guide portion (78) with their guide groove open downwards.

2. An anti-sinking device according to claim 1, characterized in that the curved connecting piece (34) has a substantially flat, flexible base (70) from which slats (72) extend perpendicularly to the base, each end of the base having connection means (74, 64) to a guide portion, a groove the guiding is made in a lateral edge of each slat (72) between the flexible base (70) and the free end of the slat.

3. Anti-sinking device according to claim 2, characterized in that each slat (72) has near its free end on one face a raised area and on the opposite face a recessed area such that when the base flexes so that the free ends of slats (72) approach each other, the raised areas cooperate with the recessed areas, achieving a bonding of the slats to each other.

4. Anti-sinking device according to any one of claims 1 to 3, characterized in that the first guide portion (28) and the intermediate guide portion (32) are made in C-shaped profile parts having similar sections.

5. Anti-sinking device according to any one of claims 1 to 4, characterized in that the first connecting means comprise several first connecting pieces (54), in that each connecting piece has a lower face into which opens a guide groove forming an arc of a circle, two radial faces (60) forming a dihedral, and in that the first connecting pieces (54) are similar.

6. Anti-sinking device according to claim 5, characterized in that each radial face (60) has an opening and a projection (62) so as to allow a connecting piece (54) to be fitted with another similar connecting piece (54).

7. Anti-sinking device according to any one of claims 1 to 6, characterized in that it further comprises a locking system with a male part cooperating with a female part.

8. A laterally sliding sectional door comprising: - a first panel (8), - a last panel (10), - intermediate panels (12) mounted hinged between the first panel (8) and the last panel (10), - a lower guide rail (14) intended to be fixed to a floor, - an upper guide rail (18) having a first straight section, a second straight section and a curved section connecting the first straight section to the second straight section, a guide groove extending along the entire length of the guide rail, characterized in that it further comprises an anti-sinking device according to any one of claims 1 to 7, in that the first guide portion (28) of the anti-sinking device is parallel to the first straight part of the upper guide rail, and in that the second guide portion (78) of the anti-sinking device is parallel to the second straight part of the upper guide rail.

9. Laterally moving sectional door according to claim 8, characterized in that the last panel (10) has a guide roller (30) disposed near the free vertical edge of said last panel (10), said roller (30) being engaged in a guide groove of the anti-destroying device, in that one part (male part or female part) of the locking device is fixed on the last panel, the other part (female part or male part) being fixed so as to be fixed relative to the lower guide rail of the sectional door.

10. Laterally moving sectional door according to one of claims 8 or 9, characterized in that each first connecting piece (54) is supported by the curved part of the upper guide rail (18).

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