FR2846027A1 - Sliding door e.g. for clean room or cold chamber has rail with sloping tracks for rollers - Google Patents

Abstract

The sliding door (2) is suspended from a rail (3) with one or more tracks (33) for guide rollers (4) fixed to the door by suitable brackets (5). The tracks slope downwards from the rail, and the door is fitted with retaining elements in the form of additional rollers (9) on the opposite side of the rail to maintain the door's transverse position. The rail is suspended by its upper edge from a supporting cover (7).

Description

The present invention relates to a sliding door capable of equipping premises

  for professional use of the type, in particular, clean rooms, cold rooms or operating theaters, said doors comprising an opening suspended on a rail 5 defining at least one raceway for guide rollers made integral with said opening through

adapted frames.

  The present invention relates to the field of the manufacture of doors able to hermetically close rooms whose atmosphere is regulated and which must, in general, meet extremely strict hygiene criteria. Thus, in order to guarantee the airtightness of the room which they equip, the doors of this type are, as a rule, provided with a seal fixed on the circumference either of

  the opening, or the sleeping frame associated with it.

  In the closed position of said doors, the opening is applied against the fixed frame, so as to compress the

  seal and ensure the hermeticity of said premises.

  Of course, such doors must also be sealed near the ground, and be adjusted to the possible slope that it may present to facilitate

  the evacuation of liquid substances.

  This adjustment is obtained by fixing the rail, on which the leaf is suspended, so that it is perfectly

parallel to the ground of said room.

  At present, several models of sliding doors are known for the aforementioned and supposed uses.

  meet the different requirements.

  Thus, FR 2 582 343, for example, describes a sliding door whose opening is caused to move longitudinally, via a set of guide rollers, on a horizontal rail secured to the part

upper frame.

  Said rail has notches adapted to receive the guide rollers in the closed position of the door, which causes the collapse of the door respectively against the partition and the ground and provides a hermetic closure. Another similar door is known from the document

FR 2 726 314.

  The latter moves sliding on a rail that has the distinction of being made in one piece with

  a fixing profile and a protective cover.

  In fact, this single piece consists of a straight section section with a constant upper part of

  mounting on supports fixed to the fixed frame of the door, this upper part further comprising a hood extending in front and extended from below by a wing extending cantilevered towards the frame of the door, the free part of this wing constituting the rail.

  The major disadvantage of the aforementioned installations lies

  in that they are shaped so as to have, in the vicinity of the rail, a chute within which dust, impurities and other undesirable particles accumulate over time.

  Therefore, in order to respect the established hygiene criteria, it is necessary to evacuate said soils, and to carry out frequent cleaning operations.

  particularly difficult and restrictive.

  Moreover, most of the various known models of this type of door are not entirely satisfactory from an aesthetic point of view, especially when the floor of the

  local they are supposed to close is not horizontal.

  Indeed, in this case, as already discussed above, if one wants to ensure the tightness of the room, the rail must be fixed to the wall so as to follow the slope of the ground. However, since the rail and the cover are generally made in one piece, the latter appears, once the assembly is fixed to the wall, parallel to the ground, but inclined with respect to the ceiling, which is visually disturbing and gives the impression that the

  door is not properly installed.

  The present invention aims to overcome these various disadvantages, by the implementation of simple means 5, allowing a quick and convenient installation of a sliding door of the aforementioned type, and ensuring compliance with both the hygiene criteria and aesthetic, without

  as much by increasing the manufacturing cost.

  For this purpose, the invention proposes a sliding door 10 for a clean room or the like comprising an opening leaf suspended on a rail defining at least one raceway for guide rollers made integral with said opening through suitable frames, characterized by the fact that the rail is itself suspended by its longitudinal upper edge to a carrier profile while the raceway on which are caused to evolve said guide rollers is defined by an inclined plane descending on one of the longitudinal sides of said rail , the opening being provided, moreover, retaining means provided able to interact with the longitudinal side of the rail opposite the raceway to ensure a transverse retention of said guide rollers the

  along the inclined plane defined by said raceway.

  According to a first particularly advantageous characteristic, said retaining means are defined by retaining rollers opposed to the guide rollers and coming to evolve on a running track fitted on said longitudinal side of the rail opposite to the raceway of the rollers

guidance.

  According to an additional feature, said rail is defined by a plane symmetrical with respect to a vertical median plane and comprises on each of its longitudinal sides a

  rolling path in the form of a descending inclined plane.

  It will be easily understood that this inclination of the path of

  rolling avoids as much as possible the deposit of undesirable impurities.

  In addition, those that are deposited nevertheless, are evacuated automatically, as and when the

  guide rollers on the raceway.

  According to another characteristic, the frames supporting the guide rollers and the retention rollers adopt a

  symmetrical configuration with respect to a vertical median plane.

  According to an additional characteristic, which makes it possible to guarantee the hermetic integrity of said sliding door, the raceway for the guide rollers is designed capable of giving the opening, in the final closing phase, a displacement with a component perpendicular to this opening. , in

direction of a sleeping frame.

  In the same context, said sliding door is also characterized in that the raceway for the guide rollers is designed capable of conferring on the opening, in the final closing phase, a component displacement.

  vertical to this opening, towards the ground.

  Moreover, particularly advantageously,

  said rail is suspended from the carrier profile by means of tilt adjustment means.

  Thus, it is possible to adjust the rail relative to the ground without changing the horizontal position of the carrier profile, which ensures an aesthetic assembly of the assembly. An additional feature relates to the fact that said carrier profile comprises a planned wing adapted to define

  a console for fixing a partition.

  According to another feature, said carrier profile comprises a wing under which said rail extends, and defining an inclined plane descending from the wing

  corresponding to the bracket.

  A further feature is that said wing defining an inclined plane is extended to its

  free end by a frontal closure profile.

  According to an additional feature, the carrier profile comprises fixing means, in particular means

  automating the movement of said door.

  Furthermore, another characteristic relates to the fact that said carrier profile defines partially or totally a

protective cover.

  Thanks to the present invention, the sliding doors intended to equip premises with controlled atmosphere, make it easier to meet the standards of hygiene, on the one hand avoiding the phenomena of deposition and accumulation of soiling observed with ordinary models, and secondly, thanks to a self-cleaning that takes place as and when

opening and / or closing.

  Furthermore, the present invention also solves the aesthetic problem, thanks to the independent character of the rail relative to the carrier profile which facilitates

  the adjustment and installation of such a door.

  The invention will be better understood on reading the following description relating to examples of

  realization given for information only and not limiting.

  The understanding of this description will be facilitated

  FIGS. 1 is a schematic perspective view of a sliding door according to the present invention, in the closed position; FIGS. 2 and 3 are partial diagrammatic views, in section along AA, of a first embodiment of such a door, respectively in open and closed position, - Figure 4 is a schematic sectional view along AA of a rail as implemented in the embodiment example. FIG. 5 is a diagrammatic representation of another embodiment of a rail as used in the present invention; FIG. 6 is a diagrammatic view, in section along AA, of a raceway as implemented in the present invention, - Figure 7 shows a schematic view, in section 5 along AA, of a carrier profile, as implemented in the present invention, - the figure 8 represents a view s sectioned according to AA, a ground guidance system as implemented

in the present invention.

  The present invention relates to the field of the manufacture of sliding hermetic doors, suitable for equipping rooms such as in particular clean rooms, operating theaters or similar rooms, subject to a regulation of their atmosphere, and having particular characteristics. in terms of hygiene, pressure, temperature. Such a door 1 is defined by a frame 20 on which is slidably mounted an opening 2 suspended on a rail 3, for example aluminum, defining at least one rolling path for guide rollers 4, which are fixed on

  the opening 2 through frames 5.

  In general, the guide rollers 4 are made of a polyamide type material, and their number is chosen in

  function of leaf dimensions 2.

  In the exemplary embodiments considered here,

  the installation comprises two guide rollers 4.

  Moreover, the opening 2 is also classically

  equipped with a peripheral seal 6, able to guarantee a tight closure of said opening 2 on said fixed frame 30.

  In the exemplary embodiment corresponding to FIGS. 2 and 3, the rail 3 is suspended by its longitudinal upper edge 31 to a carrier profile 7, by means of

  suitable fasteners, such as screws 8, for example.

  According to the present invention, said rail 3 has, in addition, on one of its longitudinal sides 32, a descending inclined plane, which constitutes a raceway 33, on which said rollers are slidable.

guide 4.

  Preferably, in this possibility of embodiment, said downward inclined plane defined by the raceway 33 has, relative to the vertical, a

angle a of 450.

  However, other embodiments presenting the

  The same advantages and in which this angle has other values are quite possible.

  Thus, in one embodiment shown in FIG. 5, said inclined plane has, for example, an angle

  135 from the vertical.

  Moreover, the opening 2 comprises retaining means 15 capable of interacting with the longitudinal side 34, opposite the

raceway 33.

  The retaining means make it possible to ensure transverse retention of the guide rollers 4 along the path of

bearing 33.

  According to a preferred embodiment, said

  retaining means are defined by retaining rollers 9, opposite to the guide rollers 4, and coming to move together with the latter, on a raceway 35 located on the longitudinal side 34 opposite the rolling path 33 of said rollers guidance 4.

  For a good balance of all, the number of retaining rollers 9 used will be chosen according to the number of guide rollers 4; thus, for two guide rollers 4, the

  The system shall preferably include two retaining rollers 9.

  In addition, as shown in the various figures, the mounts 5 solidarisant the guide rollers 4 and the retaining rollers 9 with the opening 2, are in the form of bent legs, symmetrical with respect to a vertical median plane, and uniformly distributed along the upper end 21 of leaf 2, as appropriate

compared to the number of pebbles.

  The different guide rollers 4 and retaining 9 are fixed on these curved legs by conventional means, such as

that screws 51, for example.

  The fact of having two sets of at least two guide rollers 4 and at least two retaining rollers 9 allows a better distribution of the load of the opening 2

on the carrier profile 7.

  This peculiarity of the system is therefore very advantageous because the load is supported by at least four rollers and not by two, as is currently the case in the

  majority of existing standard rail systems.

  There is thus a sliding door 1 particularly stable and able to withstand durably the many constraints to which it is constantly subject. On the other hand, according to another characteristic

  Particularly advantageous of the present invention, said rail 3 is defined by a plane, symmetrical with respect to a vertical median plane, and has on each of its longitudinal sides 32, 34, a rolling path 33, in the form of a plane inclined descending.

  It will be readily understood that this particular conformation of the raceway 33 makes it possible, quite simply and cleverly, to avoid the deposition of dust or other particles at the level of the rail 3, which not only does not offer a trough favoring their accumulation but

  Moreover, it presents a structure hindering such a deposit.

  In addition, the possible soiling that could

  despite this being deposited, would be automatically eliminated during the sliding movement of the guide rollers 4 on said race 33.

  No sliding rail model known and used today has such a faculty of self-cleaning, and this new feature, likely to cause considerable time and energy saving during the maintenance of the sliding doors of the type concerned by the present invention,

  is therefore quite interesting from this point of view.

  In order to guarantee the hermetic integrity of the door 1, the present invention furthermore makes it possible to cause the opening 2, during the passage in the closed position, to carry out on the rolling path 33 a component displacement perpendicular to said 5 2, in the direction of the fixed frame 20, as well as, where appropriate, a vertical component displacement in the direction of the

soil 10.

  This has the effect of compressing the seal 6 against the frame 20, as seen in Figure 3, and 10 against the ground 10, thus avoiding any infiltration of air or

  other undesirable elements, when the door 1 is closed.

  For this purpose, the guide path 33 is, for example, lined with a removable profile 11, shown in section in FIG. 5. The latter comprises two zones of inflection in the form of

  slopes, which ensure a descent by gravity of the guide rollers 4 and retaining 9, and thus cause the leaf 2 to move towards the frame 20 and, if necessary, to the ground 10, to compress the sealing gasket 6.

  In this connection, it is also possible to associate with the

  presents a system of ground guidance, shown in Figure 7, comprising a section 12 of the aluminum type, fixed on the lower end 22 of the leaf 2 and adapted to be inserted into a sliding guide 13 placed on the ground 10.

  This guiding system not only stabilizes the sliding of the door 1, but also promotes ground sealing due to the presence of a seal 14

extending the profile 12.

  According to an additional feature of the present invention, the rail 3 is independent of the carrier profile 7 and is suspended on the latter by means of means

  adapted to allow its adjustment in inclination.

  These adjustment means can be defined, for example, by a series of screws 8, inserted regularly along the carrier profile 7 from above, as can be seen in FIGS. 2 and 3, to be screwed each independently and more or less deeply. on the rail 3, according to the desired inclination of the latter. Thus, the slope of the rail 3 can be very easily adjusted to the gradient of the ground 10, while preserving the

  horizontal character of the carrier profile 7 relative to the wall.

  This avoids any installation problem and the door 1 meets the aesthetic criterion by appearing properly

  laid, while guaranteeing hermeticity at ground level.

  In order to simplify as much as possible the structure of the

  system, and limit the number of elements required, another feature is that said carrier profile 7 has a flange 71 intended to allow its attachment against the wall above the opening may be closed by the door 1.

  This wing 71 defines in fact a fixing bracket adapted to be fixed on the upper part of the frame 20,

  or on the wall in the vicinity of the latter.

  Said fixing bracket can be fixed by screwing 20 for example, by controlling its horizontality, which must be perfect to ensure the aesthetic appearance of the door 1 a

  the leaf 2 suspended on the rail 3.

  This wing 71 is extended by another wing 72, which

  defines a plane inclined relative to the horizontal, and under which the rail 3 extends.

  This makes it possible at the same time to protect the rail 3 from the introduction of any dust and to avoid the deposit of the latter on said wing 72 thanks to its conformation.

inclined plane.

  Said carrier profile 7 may also include a frontal closure profile 73 extending the wing 72, both to increase the aesthetic character of the assembly by concealing all the mechanics related to the rail 3 and to the different guide rollers 4 and 9 and both to protect the latter in collaboration with the wing 72 defining a

inclined plane.

  According to an additional characteristic, the carrier profile 7 also comprises fastening means 74 located for example under the wing 72 in the vicinity of the profile of

frontal closure 73.

  These can in particular be used to fix means for automating the door 1 able to facilitate and accelerate the opening and / or closing thereof, and allowing, especially when in an atmosphere

  sterile, to actuate it without touching it.

  As is clear from the foregoing, the present invention provides a simple and clever solution to the problems encountered with current models of sliding doors. In particular, by means of appropriate shape, the fouling of the sliding system is minimized and its

easy cleaning.

  Although the invention has been described with respect to some particular embodiments, it will be understood that it is by no means limited thereto and that various modifications of shape, materials and combinations thereof may be made. various elements, without departing

  of the frame and the spirit of the invention.

Claims (13)

  l. Sliding door for a clean room or the like comprising an opening (2) suspended on a rail (3) defining at least one race (33) for guide rollers (4) secured to said opening (2) via adapted frames (5), characterized in that the raceway (33) on which are caused to evolve said guide rollers (4) is defined by an inclined plane descending on one of the longitudinal sides (32) of said rail (3), the opening (2) being provided, moreover, retaining means provided to ensure a transverse retention of said guide rollers (4) along the inclined plane defined by said path of bearing (33).   2. Sliding door according to claim 1,   characterized in that said rail (3) is suspended by its longitudinal upper edge (31) to a carrier profile (7) while said retaining means are provided capable of interacting with the longitudinal side (34) of the rail (3) opposite at the rolling path (33).   3. Sliding door according to any one of   1 or 2, characterized in that the retaining means are defined by retaining rollers (9) opposite to the guide rollers (4) and coming to evolve on a rolling track (35) fitted to said longitudinal side (34). ) of the rail   (3) opposite the raceway (33) of the guide rollers (4). 4. Sliding door according to any one of   Claims 1 to 3, characterized in that said rail (3) is defined by a plane symmetrical with respect to a median plane   vertical and comprises on each of its longitudinal sides (32, 34) a raceway (33) in the form of a descending inclined plane.   Sliding door according to one of the preceding claims, characterized in that the frames   (5) supporting the guide rollers (4) and the holding rollers (9) adopt a symmetrical configuration with respect to a vertical median plane.   6. Sliding door according to any one of   preceding claims, characterized in that the rolling path (33) for the guide rollers (4) is designed to impart to the opening (2), in the final closing phase, a component displacement perpendicular to this opening (2), in direction of a sleeping frame (20).   7. Sliding door according to any one of   preceding claims, characterized in that the path of   bearing (33) for the guide rollers (4) is designed to give the opening (2), in the final closing phase, a vertical component displacement to this opening (2), in ground direction (10).   8. Sliding door according to any one of   Claims 2 to 7, characterized in that said rail (3) is suspended from the carrier profile (7) via means (8) tilt adjustment.   9. Sliding door according to any one of   Claims 2 to 8, characterized in that said profile   carrier (7) comprises a wing (71) provided adapted to define a   bracket for fixing against a partition.   10. Sliding door according to claim 9, characterized in that the carrier profile (7) comprises a flange 25 (72) under which said rail (3) extends, and defining an inclined plane descending from the wing (71). corresponding to the mounting bracket.   11. Sliding door according to claim 10, characterized in that said flange (72) defining an inclined plane is extended at its free end by a profile of front closure (73).   12. Sliding door according to any one of   Claims 2 to 11, characterized in that the carrier profile (7) comprises fixing means, in particular means for automating the movement of said door. 2846027 14   13. Sliding door according to any one of   Claims 2 to 12, characterized in that said carrier profile (7) partially or totally defines a cover of protection.