EP0072267A1 - Suspension device for a tightly closing sliding door - Google Patents

Abstract

The present invention relates to a device for suspending a sliding waterproof door. The device comprises a guide rail (1) having a cross section in the general shape of C, fixed to a wall (M) and delimiting two guide surfaces (8, 9) one of which (8) has a notch (2 ) with which cooperates at least one roller (G1) or other rolling element or sliding carried by means (13) for supporting the door and the other of which cooperates with at least one roller (G2) or other rolling element or sliding carried by an oscillating arm (21) connected to the door (P), characterized in that the or each oscillating arm is disposed entirely inside the rail (1) with a C section and works in compression.

Description

The present invention relates to watertight sliding doors and their suspension devices, such doors being used, in particular for enclosures in which a determined temperature and / or atmosphere must be maintained.

A device for suspending a sealed sliding door of simple and inexpensive construction making it possible to obtain a closing force of the door significantly increased compared to what was already obtained in the systems of the prior art is described in the application. Patent No. 72 42 370. In this device, the door support means essentially consists of a traction arm, a first end of which cooperates with a first guide member secured to the wall, with respect to which it can move angularly and in translation and the other end of which supports the door itself in oscillating fashion.

The device also comprises a second guide rail fixed to the wall, the guide surface of which delimits at least one ramp or a notch with which at least one roller or rolling or sliding element cooperates carried by means of supporting the door.

Also in this device, the angle formed by the traction arm with the horizontal allows when the roller located on the second guide rail falls into a notch, to generate a force for applying the door on the frame equal to 1.4 to 1.7 times the weight of the door, which naturally favors obtaining a good seal.

An improvement to this device is described in addition certificate n ° 76 24 558.

This improvement consists in replacing the two guide rails by a C-shaped profile fixed against the wall, the edge of the lower wing of the C forming the surface of said second guide rail, and the upper part of the C delimiting a surface of bearing diri inwardly of the profile and constituting said first guide rail. This solution significantly simplifies the manufacture of the suspension device and consequently reduces the cost price.

As sophisticated as this latter device is, it nevertheless has the following drawbacks. Firstly, the position of the end roller of the traction arm which is always above that of the roller running on the lower wing of the C, imposes a significant upward distance between the edge of the lower wing of the C and its upper part. This results in a lack of compactness of the rollers, traction arm and C-profile assembly, which has the consequence of making too much space which must be reserved for the C-profile above the watertight door, the reservation of this space takes place naturally at the expense of the height available for the door itself.

Secondly the angle of inclination formed by the traction arm with the horizontal, when the door is in the open position increases by an amount α when the door passes in the closed position, which limits the maximum efficiency of the closing force to that obtained for the residual angle

Finally, the point of articulation of the traction arm on the door located outside the C-shaped profile exposes the suspension rollers to dust, which requires the mounting of an outer profile or protective casing which increases all the more the cost price of the whole.

The object of the present invention is to provide improvements to the above devices with a view to obtaining a more compact device, greater closing efficiency, and a better external appearance, while reducing its cost price.

To this end, the present invention relates to a device for suspending a watertight sliding door. comprising a guide rail having a cross section in the general shape of C, fixed to a wall and delimiting two guide surfaces, one of which comprises at least one ramp or a notch with which at least one roller or other rolling element cooperates or sliding carried by door support means and the other of which cooperates with at least one roller or other rolling element or sliding carried by a swing arm connected to the door, characterized in that the or each swing arm is disposed entirely inside the C-section rail and works in compression.

According to another characteristic of the invention, the ends of the C formed by the lower and upper edges of the C are arranged in an approximately horizontal plane and the guide surfaces situated at said ends of the C are approximately perpendicular to each other.

According to a preferred embodiment of the invention, the door is mounted on fittings connected in an oscillating manner to the compression arm and which support the or each rolling or sliding element cooperating with the first guide surface.

Preferably, the compression arms are inclined to the horizontal by an angle less than 45 ° when the door is in the closed position.

• - la Fig.l est une vue schématique montrant la décomposition des forces lorsque la porte est en équilibre sur le rail de guidage;
• - les Fig.2A et 2B représentent de façon schématique les positions de la porte par rapport au rail de guidage dans les positions respectivement fermée et ouverte;
• - la Fig.3 est une vue en coupe du dispositif de suspension suivant la ligne 3-3 de la Fig.2B;
• - la _Fig.4 est une vue en coupe du dispositif de suspension suivant la ligne 4-4 de la Fig.2A;
• - la Fig.5 est une vue en coupe du dispositif de suspension suivant la ligne 5-5 de la Fig.4.

The invention will be better understood with the aid of the description which follows, given by way of example and made with reference to the appended drawings, in which:

• - Fig.l is a schematic view showing the breakdown of forces when the door is balanced on the guide rail;
• - Fig.2A and 2B schematically represent the positions of the door relative to the guide rail in the closed and open positions respectively;
• - Fig.3 is a sectional view of the device suspension along line 3-3 of Fig.2B;
• - _F ig.4 is a sectional view of the suspension device along line 4-4 of Fig.2A;
• - Fig.5 is a sectional view of the suspension device along line 5-5 of Fig.4.

Door P and its suspension devices are shown diagrammatically in FIGS. 1 and 2A, 2B. In these figures, the door P is suspended from a guide rail 1 by means of suspension devices S each comprising two rollers G ₁ and G ₂ which ensure the longitudinal movement of the door, by rolling on the guide rail. In the guide rail are provided notches 2 into which the rollers G ₁ fall when the door is in the closed position of FIG. 2A.

The details of embodiment of each suspension device S and its cooperation with the door P and the guide rail are shown in Fig.3 to 5. The door is shown in the open position in Fig.3. It is shown in the closed position resting on its sealing beads B in Fig. 4.

In these figures, the guide rail 1 is constituted by a C-shaped section lying down, open downwards, and kept applied to the wall M by a first wing la, by means of a fitting 4 and a wing 5a of a bracket 5, the assembly being tightened by a screw 6 which passes through them and is screwed into the wall M.

The guide rail 1 is also fixed by its upper core 1b to the upper wing 5b of the bracket 5 by means of a fixing means 7, so that the core 1b is planar and approximately horizontal. . The free end 1c of the wing 1a of the rail 1 is folded obliquely towards the interior of the C and forms an angle close to 45 ° with the horizontal so as to constitute a plane guide surface 8 internal to the profile C.

The guide surface 8 and the wing also have it Lement in two predetermined locations the notches 2 which can be seen in Fig.4. The wing of C opposite the wall M comprises two parts Id and forming between them an obtuse angle. The part Id is adjacent to the core Ib. The part it extends parallel to the wing la and ends at its free end by a flange 1f directed towards the inside of the profile, this flange delimiting in the angle formed internally with the adjacent part 1c, a rolling surface 9 of circular arc section located inside the guide rail 1 and thus constituting a second guide surface whose mean plane is approximately perpendicular to the guide surface 8. On the guide surface 8 rolls the roller G mounted idly around a ring 10 which is fixed by a bolt 11 to an oblique upper wing 13a of a profile 13 in V. The lower wing 13b of the profile 13 is roughly horizontal and fixed to the upper edge of the door P by means of a fixing means 14.

The oblique wing 13a also supports a roller support device G ₂ composed of two brackets 15 and 16, (Fig.5) with perpendicular wings. The wings 15a and 16a of these brackets are fixed to the wing 13a by means of clamping means 17 and 18. The other wings 15b and 16b are held apart apart from one another by a spacer 19 and a rod 20, the longitudinal axes of the spacer 19 and of the rod 20 being arranged parallel to the longitudinal axis of the guide rail 1. On the rod 20 is articulated the core 21a of a compression arm 21 in the form of yoke between the legs 21b and 21c from which pivots, on a rod 22 perpendicular to the rod 20, the roller G ₂ . This roller G ₂ rests on the rolling surface 9 and has a toroidal peripheral surface, which allows an angular displacement of the axis of the roller G ₂ relative to the surface 9. The rod 20 is located above the rollers G and G ₂ , near the core 1b of C; the mean planes of the two rollers intersect in the vicinity of this rod and are inclined at approximately the same angle on the vertical.

The operation of the device is described below. When the door is in translation position, that is to say in partial or total opening position, the device has the configuration shown in Fig.3. During the translation of the door, the rollers G ₁ , G ₂ roll respectively along their guide path 8 and 9. When the door reaches the vicinity or in its closed position, the rollers G ₁ fall into the notches 2 wing Ia, causing the door to move to the floor and to the wall. During this movement, the angle formed by the mean planes of the rollers G ₁ and G ₂ increases by a value d of about ₁ 5 ° to take the position shown in Fig.4 where we can see that the rollers G ₂ have tilted around their fulcrum on the rolling surface 9.

Referring to Fig.l, one can examine how the forces are broken down when the door is in the closed position. The weight Po of the door, transmitted by the profile 13, is exerted on the rod 20. Its line of action, from this rod passes between the rollers G ₁ and G ₂ . If it is assumed that the rolling surface 8 practically does not intervene in the transmission of forces, which is actually the case in reality due to the support of the beads B on the wall M, the weight Po of the door can be broken down into a component P _T directed along the compression arm 21 and a horizontal component P _H. We see in Fig.l that if β represents the angle formed by the compression arm with respect to the horizontal when the door is in the closed position, the horizontal component P _H of the weight which is equal to Po, is greater than Po if we take the Tgβ precaution to choose an angle β less than 45 °.

In its lower part, the door is guided by rollers 22 of conical shape and vertical axis, whose generator closest to the wall is inclined relative to vertical to the above-mentioned angle β. In this way, the reaction exerted by the wall on the lower part of the door is absorbed by the lower guide rollers.

Returning to the device shown in Figs 3 and 4, the compression arm 21 makes an angle β with the horizontal when the door is in the closed position and an angle α + β when the latter is in the open position. The angle of inclination of the compression arm with the horizontal is therefore minimal when the door is in the closed position, and this situation is naturally favorable to greater efficiency of the closing force of the door. It will be noted that with the device of the invention as just described, it is always possible to obtain any values of 3 between 0 and 45 ° by increasing for example the distance between the two wings of the C and / or by raising the edge If of the same profile.

Claims (9)

1. Device for hanging a sliding waterproof door comprising a guide rail (1) having a cross section in the general shape of C, fixed to a wall (M) and delimiting two guide surfaces (8, 9) including one (8) comprises a notch (2) with which cooperates at least one roller (G ₁ ) or other rolling element or sliding carried by means (13) for supporting the door and the other of which cooperates with at least one roller (G ₂ ) or other rolling element or sliding carried by an oscillating arm (21) connected to the door (P), characterized in that the or each oscillating arm is disposed entirely inside the rail (1) to section in C and works in compression. 2. Suspension device according to claim 1, characterized in that the guide (8) and rolling (9) surfaces are approximately perpendicular. 3. Suspension device according to any one of claims 1 and 2, characterized in that the or each compression arm (21) is inclined on the horizontal by an angle less than 45 ° when the door is in the position of closing. 4. Suspension device according to any one of claims 1 to 3, characterized in that the guide (8) and rolling (9) surfaces are on the same level in an approximately horizontal plane and in that the axis of oscillation (20) of the or each compression arm (21) is located above the rollers (G1, G2). 5. Suspension device according to any one of the preceding claims, characterized in that the or each compression arm (21) comprises a first end (21a) articulated on a rod (20) connected to the door (P) of which l the longitudinal axis is oriented in a direction parallel to the axis of the guide rail and a second end (21b) provided with a rod (22) on which is fixed in rotation a roller (G ₂ ) cooperating with the guide surface (9) having no notches. 6. Suspension device according to claim 5, characterized in that the rod (20) is connected to the door (P) by means of two brackets (15,16) fixed at each of its ends. 7. Suspension device according to any one of the preceding claims, characterized in that the C-shaped guide rail (1) is open downwards and fixed to the wall (M), by one of its wings ( the). 8. Suspension device according to claim 7, characterized in that said wing (la) rests on a wing (5a) of a bracket (5), the assembly being clamped by a clamping means (6) fixed to the wall (M). 9. Suspension device according to claim 8, characterized in that the core (lb) of the guide rail is also fixed to the other wing (5b) of said bracket so as to be arranged in a roughly horizontal plane .

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