FR2906292A1 - Lateral sliding, firestop type door leaf fixation device for e.g. warehouse, has support and guide rail with guide and suspension rollers supported on section and branch of section of rail, along direction in plane with respect to wall - Google Patents

Abstract

The device has a support and guide rail (6) on which guide rollers (22) and suspension rollers (24) are supported. The suspension rollers are mounted in rotation on a vertical shaft. The rollers (22, 24) are supported on plane section (15) and a branch (19) of the section of the rail, respectively along a direction in an inclined plane with respect to a wall (1). The rail comprises the plane section (15) that is supported against the wall and fixed to the wall. The plane section is extended in direction of a door leaf by an inclined return part.

Description

MEANS FOR FASTENING BY SUSPENSION ON A WALL OF A SLIDING DOOR

  The present invention relates to a door, in particular a door of fire-type, capable of sliding laterally, parallel to a wall and close to it, so as to allow or prevent the passage through an opening provided in said wall. The invention also relates to the means for fixing by suspension of said door on a wall. Fire doors are designed to resist fire, or at least to delay the transmission of heat from a fire in a room, through an opening to the adjacent room. Fire doors have many applicaions: for example in public buildings, warehouses, or big box stores. Such doors comprise in known manner a steel sheet casing or box, filled with inert and insulating material, such as plaster.

  They generally have a thickness of about 70 mm, a height of about 3.50 m and a width of about 4.00 m. Their weight can go up to, or even exceed, one ton. The suspension means of such doors must be very strong, while being reliable and allow easy and relatively fast movement of the door. We understand that these constraints are contradictory.

Furthermore, the fire doors must be placed close enough to the wall, to allow optimal closure of the opening provided in its last, but not too close nevertheless to not hinder their sliding movement. It is the same for spacing height from the ground.

Known fire doors of known type are suspended from above, by suspension means, including guiding means. Fire doors are known consisting of a leaf secured in the upper part, a support structure and guide comprising: - a guide rail parallel to the ground, and C-shaped transverse cone, with the opening turned down; - A set of C-shaped clips, in cross section, enclosing the guide rail; a series of carriages each comprising several (4 to 6) support rollers, mounted to freely rotate along a horizontal axis, and bearing on the edges or the lips of the C formed by the guide rail; - - threaded rods connecting the top of the leaf and the support rollers; a series of guide rollers, rotatably mounted on a vertical axis on the carriages, and bearing on the vertical inner surfaces of the guide rail; - - Rigid and resistant brackets, L-shaped and fixed to the wall on the one hand, and by threaded rods on the other staples. These known devices have disadvantages. First, the requirements related to safety lead to using support means (rail, square, trolley, etc. ....) Large, so heavy, bulky and expensive.

Moreover, these doors, in order to be able to function perfectly, require precise adjustment and placement of the support and guiding means. This is complicated and therefore time consuming, without the reliability can be guaranteed. Also, the relatively small diameter of the support rollers and guide rollers further increases the need for ad-hoc adjustment for reliable sliding. In addition, these known devices do not allow the adjustment of the space between the leaf forming the door and the wall.

In addition, the structure of these devices leads to a large height requirement, which requires anchoring the brackets on the part of the wall above the lintel of the opening. Since this part generally consists of hollow blocks or weak wall elements, fixing the brackets on the wall is long, difficult and delicate. Finally, the rigidity of the support means leaves something to be desired because the guide rail is not fixed directly to the wall, but via the brackets and threaded rods. The present invention overcomes these disadvantages and proposes means for supporting and guiding a fire-stop type door, allowing: -said lateral sliding reliably and easily and without complicated adjustment; - its fixing on the wall in an easy and reliable way; a high intrinsic rigidity of support structure, making it possible to reduce the number of fastening elements on the wall; - reduced size in height; an adjustment of the distance separating the leaf from the wall; 2906292 4 - easy height adjustment of the door. To this end, according to the invention, the device for suspending a door leaf of the fire-resistant type on a wall, the door being slidable laterally and intended to disengage or prevent the passage of a planned opening. in the wall, said means comprising a support and guide rail on which carry on the one hand guide rollers of vertical axis and on the other hand suspension rollers integral with said leaf, is characterized in that the rollers of suspension are rotatably mounted on a vertical shaft. More specifically, the suspension rollers on the one hand and the guide rollers on the other hand bear on respective portions of the guide rail opposite one another, in a direction contained in a plane inclined with respect to Wall. Advantageously, the suspension rollers bear on a portion of the guide rail located close to both the leaf and the wall, while the guide rollers bear on a part of the rail that is at a distance from both the wall and the leaf. . According to a preferred embodiment, the rail is fixed directly to the wall.

Advantageously, the rail comprises, seen in cross-section - a first flat section that can be pressed against and fixed to the wall (by fastening elements known per se), said flat section being extended towards the leaf by a return, preferably inclined, on which are able to carry the suspension rollers; A second L-shaped section, the large branch of which is horizontal and perpendicular to the proximal edge of said planar section, and whose small branch is extended by a return, preferably inclined towards the wall, on which are suitable for carrying the guide rollers. The guide rollers are mounted on a shaft, of vertical axis, the lower end of which is fixed to the leaf, preferably via an eccentric system, to allow adjustment of the vertical distance between the leaf. and the wall. The suspension rollers and the guide rollers are mounted on a common shaft of vertical axis, preferably free to rotate, so as to allow on the one hand the height adjustment of the leaf, and on the other hand a movement to the time of rotation and translation of the leaf, in the case of so-called accordion door.

Between the guide rollers and suspension rollers, a spacer is mounted on said common shaft, the spacer having a reduced or even substantially reduced diameter with respect to the diameter of the suspension rollers and / or guide rollers. This makes it possible to leave sufficient space for the fastening elements of the rail on the wall.

The diameter of the suspension rollers is greater than that of the guide rollers and / or greater than the dimension of the rail transversely to the wall, to obtain a smooth movement of the leaf on the rail.

The guide rollers and suspensions are mounted on said common shaft by means of bearings. The invention will be better understood in the light of the following description, giving an illustrative but non-limiting example, with reference to the accompanying drawings, in which: Figure 1 is a schematic perspective view of a fire door slidably fixed by suspension to a wall, by the suspension and guiding device of the invention; and FIG. 2 shows a cross-sectional view (in a vertical plane perpendicular to the wall plane) of an embodiment of a fire door suspension and guide device according to the invention. .

Referring to Figure 1, there is shown in schematic perspective a wall 1 of a room, provided with an opening or passage 2, whose access must be released or prevented by a door 3 of the fire type provided of a leaf 4.

The wall has a vertical face 5. The leaf 4 is known in itself, and may be formed of a frame or envelope of metal sheet, for example steel, delimiting a kind of box filled with material inert and insulating, such as plaster. The device according to the invention, for fixing by suspension of the leaf 4 on the wall 1, comprises a guide rail 6 and suspension, consisting of a longiline metal profile, preferably folded sheet.

The leaf 4 is capable of being displaced by lateral sliding on the horizontal rail in a vertical plane. The leaf thus moves parallel to the plane of the wall 1 and parallel to itself, close to the wall, between a closed position of the door where the leaf closes the passage 2, and an open position of the door where the leaf 30 clears the passage (Figure 1).

The width and height of the leaf correspond substantially to those of the opening, or are slightly greater than those of the opening. The suspension and guide rail 6 has a length of at least twice the width of the leaf 4, so as to suspend and guide the leaf in its sliding, between the position of clearance of the opening 2 (FIG. ), and a closed position of the opening, to prevent passage and in particular isolate the two volumes or spaces contiguous and separated by the wall 1, mainly in case of fire, or in the prevention of a fire. The suspension means, the guide means, the details of the rail, and the rail attachment means on the wall are described below in detail with reference to FIG. 2. This shows a cross-sectional view of the device. of the invention, the upper part of the leaf 4 and part of the wall 1. The leaf 4 is constituted in known manner of a metal casing 20 7 forming a box filled with inert and insulating material such as plaster 8. The rail 6 delimits an interior space, in which is disposed a central rod 9, consisting of a threaded rod, with a vertical axis. At the lower end 10 of the central rod 9 is fixed the leaf 4, through a ring 11 traversed in its middle by the rod 9, and provided on its outer periphery with a groove 12, shaped eccentric, and in which is likely to engage the lip 13 of an opening provided on the upper edge of the casing 7 of the leaf 4. Due to the eccentric shape of the groove 12, the sectional view of FIG. 2, the portion 13a of said lip is closest to the longitudinal median axis of the shank 9, and the diametrically opposed portion 13b of the lip cooperating respectively with throat particles 12a and 12b. A nut 14 ensures the locking in vertical translation of the ring 12 with respect to the central rod 9. Note that the leaf 4 is free to rotate relative to the central rod 9. The upper part and the middle part of the rod 9 are arranged substantially in the interior volume defined by the folded sheet forming the rail 6. The folded sheet forming the rail 6 delimits, in cross-section, a first flat section 15 which can be pressed against and fixed to the wall (by Fasteners known per se). The flat section 15 is extended towards the leaf by a return 16, preferably along an inclined plane away from the wall. The rail further comprises a second L-shaped section 17, the large branch 18 of which is horizontal, therefore perpendicular to the proximal edge of the flat section 15, and whose small branch 19 is vertical, and extended by a return 20, preferably in a plane inclined towards the wall.

The flat section 15 is fixed to the wall by fastening elements known in themselves, including peg, screw, nut and the like, and denoted by the overall reference 21 in FIG. 2. Of course, several fixing elements are provided, evenly spaced along the rail 6, although only one is shown in the sectional view of Figure 2.

The rail 6 is asymmetrical, the flat section 15 has a height greater, on the order of two to three times, than that of the small vertical branch 19 of the section 17 in L.

Suspension rollers, of which only one referenced 22 is shown in the figure, are rotatably mounted on the central rod 9 by means of bearings 23 (known in themselves). Each suspension roller 22 bears against the concave inner surface of the rail, close to the wall; In particular, the roller 22 bears on the inner faces of the lower edge of the plane section 15 and the inclined return 16. In addition, a plurality of guide rollers, only one of which is shown in the sectional view of FIG. are mounted rotatably on the central rod 9, on the side of its upper end, by means of bearings 25 (known in themselves). The diameter of the suspension rollers 21 is greater than the diameter of the guide rollers 24, and greater than the width of the rail (large branch 18 of the section 17 L). The upper end of the central rod 9 is provided with a shoulder or heel 26 for locking in longitudinal axial translation, that is to say vertical, the guide rollers.

The guide rollers 24 bear against the inner faces of the rail, and more precisely on the concave inner surface formed by the lower part of the small branch 19 of the L-shaped section 17, and by the return 20. A spacer 27 is centered on the central rod 9, between the suspension rollers 22 and the guide rollers 24. The spacer has a safety role, because it prevents the axial translation of the suspension rollers 290, in the event of destruction or deformation bearings, following a fire for example. It will be noted that the central rod 9 is freely rotatable with respect to both the leaf, the suspension rollers 22 and the guide rollers 24. A flat part 9a is provided on the central rod 9, between the ring 12 and the nut 14 on the one hand, and the suspension roller 22 on the other. This flat part can be used, using a wrench for example, to rotate the ring 12 with respect to the leaf, and thus move it more or less from the front face 5 of the wall 1. This allows to adjust the distance d separating the two opposite facing faces of the wall 1 or the opening 2 and the leaf 4.

For example, three or four sets of suspension and guide means (as shown in FIG. 2) may be provided along the width of the leaf (see FIG. 1). The invention has many advantages over the prior art. It is possible to adjust the distance or gap between the leaf and the wall. This is important to allow the door to shut off or optimally isolate the opening 2 in case of fire, while leaving enough space for lateral movement.

The overall height requirement of the assembly is reduced; for example, the distance in height separating the base of the ring 12 and the upper part of the rail constituted by the large branch 18 of the portion 17 in L, and of the order of 150 mm, whereas in the prior art it is three times higher.

As a result, the rail, being lower, can be fixed on the lintel of the opening 2, made of solid concrete, whereas, in the prior art, the support brackets of the rail are fixed at above the lintel, in the part of the wall made of hollow blocks. The suspension rollers 22 and the guide rollers 24 bear against opposite portions of the rail, following an inclined direction. This results in a better distribution of efforts.

The fact of arranging the support rollers along an axis of rotation vertically, and in particular with large diameter suspension rollers, makes it possible to improve the fluidity of the sliding of the leaf on the rail. The rail of the invention is more rigid than that of the prior art because it has a higher inertia due to a high section to height ratio. It follows that compared to the prior art, it is more economical to achieve, and it requires less fixing points and bearings (three instead of six).

The central suspension rod 9 is free to rotate and thus makes it possible to easily adjust the leaf in height. In addition, this allows the use of door made of accordion leaves, each leaf being subjected to a double movement of rotation and translation.

The safety spacer between the suspension rollers 22 and the guide rollers 24 prevents inadvertent translational movement of the suspension rollers. 5

Claims (4)

  1. Device for fixing on a wall (5), by suspension, a door leaf (3) of the fire type with lateral sliding, and intended to disengage or prevent the passage of an opening (2) provided in the wall (5), of the type comprising a support and guide rail (6) on which on the one hand guide rollers (22) of vertical axis, and on the other hand suspension rollers (24). integral with said leaf, characterized in that the suspension rollers are rotatably mounted on a vertical shaft.   2. Device according to claim 1, characterized in that the suspension rollers (28) and the guide rollers (24) bear on respective portions (15, 19) of the rail (6) opposite one another , in a direction contained in a plane inclined relative to the wall (5).   3. Device according to claim 2, characterized in that the suspension rollers (22) bear on a portion (15) of the guide rail (6) located close to both the leaf and the wall, while the rollers guide (24) bear on a portion (19) of the rail away from both the wall (5) and the leaf (6).   4. Device according to one of claims 1 to 3, characterized in that the rail (6) is fixed directly on the wall (5). 255. Device according to one of claims 1 to 4, characterized in that the rail (6) comprises, in cross sectional view: - a first flat section (15) may be pressed against the wall, and d be fixed to the wall (by fastening elements known per se), said flat section being extended towards the leaf by a return, preferably inclined, on which are able to carry the suspension rollers (22); A second L-shaped section (17), the large branch (18) of which is perpendicular to the proximal edge of said plane section (15), and whose small branch (19) is extended by a return ( 20), preferably inclined towards the wall, on which are able to carry the guide rollers 5 (24). 6. Device according to one of claims 1 to 5, characterized in that the guide rollers (24) are mounted on a shaft (9) of vertical axis, the lower end (10) is fixed to the leaf (4) via an eccentric system. 7. Device according to one of claims 1 to 6, characterized in that the suspension rollers (22) and the guide rollers (24) are mounted on a common shaft (9) of vertical axis. 8. Device according to claim 7, characterized in that between the guide rollers (24) and suspension rollers (22), a spacer (27) is mounted on said common shaft (9), the spacer ( 27) having a reduced or substantially reduced diameter relative to the diameter of the suspension rollers (24) and / or guide rollers (22). 9. Device according to one of claims 1 to 8, characterized in that the diameter of the suspension rollers (22) is greater than that of the guide rollers (24). 10. Device according to one of claims 7 to 9, characterized in that the guide rollers (24) and the suspension rollers (22) are mounted on said common shaft (9) by means of bearings (23, 25) .30