EP0458658A1 - Lintel for door of elevator cabin - Google Patents

Abstract

The invention relates to a lintel for the door of an elevator cabin comprising at least one leaf equipped on its upper part with support rollers and counter-rollers. According to the invention, this lintel is constituted by a section (26) essentially in the shape of an inverted L, comprising on the one hand a vertical wing (28), on the internal face of which there are manufactured integrally at least one first horizontal rolling track (32, 40) for the support rollers of at least one leaf, at least one second rolling track (38, 46) for the counter-rollers of said leaf or leaves, said second track being situated in the same vertical plane as the first rolling track and above it, horizontal grooves (48) situated at different levels for fixing equipment for control of the door, said vertical wing bearing on its external face at least one groove (52) for fixing the lintel to the elevator cabin, and on the other hand a horizontal wing (30), on which there is formed on the side of the upper face at least one groove (50) for fixing the drive motor of the door. <IMAGE>

Description

The present invention relates to a lintel intended to support and guide the sliding doors of an elevator car during their movement.

We will first describe the prior art with reference to Figure 1 attached. Usually, a sliding elevator door consists of one or more leaves 10 each suspended from a carriage 12 provided with support rollers 14 and counter rollers 16 which roll on a rail 18 which is itself fixed on a profiled lintel 20. This generally comprises a fixing wing 22 and a U-shaped section portion 24 inside which the door control members are housed, such as switches, detectors, safety contacts, the electrical wiring, etc. The rail is fixed to the central wing of the U-shaped portion.

• sa fabrication est relativement compliquée puisque l'on doit réaliser séparément le linteau et le rail, puis les assembler,
• selon le type de porte d'ascenseur, il faut utiliser un ou plusieurs linteaux. Par exemple, des portes à deux ou trois vantaux à ouverture latérale doivent être suspendues à deux ou trois rails différents,
• aucun réglage n'est permis pour la fixation des organes de commande sur le linteau,
• il n'est pas possible non plus de régler la position du linteau dans tous les plans horizontaux.

Such a lintel has several drawbacks:

• its manufacture is relatively complicated since the lintel and the rail must be produced separately, then assembled,
• depending on the type of elevator door, one or more lintels must be used. For example, doors with two or three leaves with lateral opening must be suspended from two or three different rails,
• no adjustment is allowed for fixing the control elements to the lintel,
• it is also not possible to adjust the position of the lintel in all horizontal planes.

The present invention aims to remedy these drawbacks and, for this purpose, it relates to an elevator door lintel, characterized in that it is constituted by a sensiblememt profile in the shape of an inverted L, comprising on the one hand , a vertical wing on the inner face of which come from manufacture at least a first horizontal raceway for the rollers carrying at least one leaf, at least a second raceway for at least one counter-roller of said one or more leaves , said second path being located in the same vertical plane as the first raceway and above it, horizontal grooves located at different levels for fixing the door control equipment, said vertical wing carrying on its outer face at least one groove for fixing the lintel on the elevator car, and on the other hand, a horizontal wing on which is formed on the side of the upper face at least one groove for fixing the drive motor of the door.

According to one embodiment of the invention, the lintel also comprises a third raceway for the rollers of at least one second leaf, which is formed on the vertical wing above the second raceway, and a fourth raceway for the counter-rollers of the second leaf (s), which is formed on the underside of the horizontal wing, said third and fourth raceways being in the same vertical plane offset from the vertical plane which contains the first and the second raceways at a distance at least equal to the thickness of a leaf.

• la figure 1 est une vue en perspective d'une porte de cabine d'ascenseur fixée sur un ensemble de rail et linteau selon la technique antérieure ;
• la figure 2 est une vue en perspective d'un linteau selon l'invention supportant un vantail représenté en traits tiretés ;
• la figure 3 est une vue en élévation en bout du linteau et du vantail ;
• la figure 4 représente le linteau supportant deux vantaux ;
• la figure 5 représente un linteau associé à un rail pour le montage de trois vantaux;
• la figure 6 est une vue en perspection partielle montrant à titre d'exemple un interrupteur fixé à une rainure du linteau ;
• la figure 7 est une vue en bout de la figure 6 ; et
• la figure 8 illustre un autre mode de fixation d'un élément dans la rainure.

An embodiment of the invention will now be described by way of nonlimiting example with reference to the appended drawings in which:

• Figure 1 is a perspective view of an elevator car door attached to a rail and lintel assembly according to the prior art;
• Figure 2 is a perspective view of a lintel according to the invention supporting a leaf shown in dashed lines;
• Figure 3 is an end elevational view of the lintel and the leaf;
• Figure 4 shows the lintel supporting two leaves;
• FIG. 5 represents a lintel associated with a rail for mounting three leaves;
• Figure 6 is a partial perspective view showing by way of example a switch attached to a lintel groove;
• Figure 7 is an end view of Figure 6; and
• FIG. 8 illustrates another method of fixing an element in the groove.

With reference to FIGS. 2 and 3, the lintel 26 is formed by a profile produced by molding or extrusion of a suitable material, for example a metal, such as aluminum, an alloy, a sufficiently resistant synthetic or composite material.

The lintel is essentially ┌-shaped and includes a vertical wing 28 and a horizontal wing 30. On the vertical wing is formed, on the inner side, a first horizontal raceway 32 for guiding rollers 34 fixed, so as per se, on at least a first leaf 36. The raceway 32 is preferably located in the vicinity of the lower edge of the vertical wing and is slightly offset from the plane of the latter.

Above the path 32 is integrated a second raceway 38 for guiding at least one counter-roller 39 intended to prevent the vertical movement of the leaf 36. The path is located in the same vertical plane as the first path 32 .

A third race 40 is provided above the second race, for the rolling of the rollers 42 of at least one second leaf 44 (see FIG. 4) and finally, a fourth race 46 intended for counter-rollers of the second leaf is formed on the underside of the horizontal wing 30 of the lintel, said third and fourth paths being in the same vertical plane which is more offset from the vertical wing 28 than that which contains the first two paths 32,38 , so that the leaves 36,44 do not interfere during their movement.

On the internal face of the vertical wing are also formed horizontal grooves 48 having a dovetail or T section and serving to fix the door control equipment, for example switches, detectors, safety contacts, electrical wiring and the mechanical stops of the leaves, as will be explained below.

For fixing the door drive motor and the electrical control box (not shown), several grooves 50 are provided on the upper face of the horizontal wing.

The lintel can be fixed to the elevator car by means of a groove 52 located at the upper part of the rear face of the vertical wing and a groove 54 located on the lower face of the first raceway 32 .

It goes without saying that the number of grooves illustrated in the drawings, as well as their arrangement, have been given only by way of example. Likewise, the respective positions indicated for the raceways are not limiting.

As shown in Figure 3, the lintel 26 according to the invention can be used to guide a single leaf 36 with lateral opening, or two leaves with central opening. In either case, the rollers of the leaf (s) roll on the lower raceway 32.

In the embodiment of Figure 4, it is to guide the movement of two leaves 36,44 with side opening or four leaves with central opening. The first leaf 36 is suspended on the lower raceway 32, exactly as in FIG. 3, and the second leaf 44 on the upper raceway 40,46 by the rollers 42 and by at least one counter-roller 43 respectively.

When the elevator car comprises three leaves 36, 44, 56 with lateral opening or six leaves with central opening, use is made, as shown in FIG. 5, of the combination of a lintel 26 and a rail 58 provided with a lower raceway 60 and an upper raceway 62. The rail is fixed to the middle leaf 44 by means of a plate 64 and it carries a carriage 66 provided with rollers 68 and at least one counter roller 69 which roll respectively on the upper rails 40,46 of the lintel. The first leaf 36 is hooked in the usual way on the lower tracks 32, 38 of the lintel, and the third leaf 56 is suspended on the tracks 60, 62 of the rail 58 by means of rollers 70 and at least a counter roller 71. The rail 58 is dimensioned so that the three leaves can slide freely without interfering with each other.

FIGS. 6 and 7 show a first method of fixing the above-mentioned control equipment, for example a switch 72, in one of the grooves, for example the groove 48. The switch is fixed by means two screws or bolts 74,76 and two nuts 78,80.

The nuts being initially loosened, the heads of the bolts are slid into the groove from the end of the latter. The switch is brought to its position and the nuts are tightened.

FIG. 8 shows another method of fixing, for example in the case of a sensor 81. This is fixed to a wing 82 of a support 84 in L whose other wing 86 is secured to the groove 48 at by means of a bolt 88 and a nut 90.

To prevent the support from rotating, the wing 86 includes a finger 92 bent towards the inside of the groove. Naturally, the finger can be replaced by another bolt and another nut.

It goes without saying that the support illustrated is only one example among many other possibilities that can be used depending on the structure of the material to be fixed.

The invention has therefore made it possible to produce a single lintel in lateral or central opening, whether the travel is to the right or to the left.

This lintel can be used for all opening dimensions. Just cut it to the desired length. All the materials fixed on the lintel are adjustable in position by sliding them along grooves 48 or 50, both at the factory and on the cab, and without limit of precision. The groove arrangements allow the lintel to be positioned in an adjustable position in all planes.

The horizontal wing 30 serves as a support for the leaf drive motor, but also for protecting the raceways 32, 38, 40, 46, rollers and counter rollers against falling objects. It is sized to support the weight of a man, and can then act as a step for an operator.

It goes without saying that numerous modifications of detail can be made to the embodiment described without departing from the scope of the invention. For example, the lintel may have only a single raceway 32 or 60 for the rollers 34 or 70 and a single raceway 38,62 for the counter-rollers.

Claims (6)

Lintel for elevator car door comprising at least one leaf (36,44,56) provided at its upper part with supporting rollers (34,42,68) and counter-rollers, characterized in that it consists of a profile (26) substantially in the shape of an inverted L, comprising on the one hand a vertical wing (28) on the inner face of which come from manufacture at least a first horizontal raceway (32.40) for the support rollers ( 34) of at least one leaf (36), at least one second raceway (38,46) for at least one counter-roller (39) of said leaf or said leaves, said second path being located in the same vertical plane as the first raceway and above it, horizontal grooves (48) located at different levels for fixing door control equipment, said vertical wing carrying on its outer face at least one groove (52) for fixing the lintel on the elevator car, and on the other hand, a horizontal wing ontale (30) on which is formed on the side of the upper face at least one groove (50) for fixing the drive motor of the door. Lintel according to claim 1, characterized in that it comprises only a single raceway for the rollers and a single raceway for the counter-roller (s). Lintel according to claim 1, characterized in that it also comprises a third raceway (40) for the rollers (42) of at least one second leaf (44), which is formed on the vertical wing (28) above the second raceway (38), and a fourth raceway (46) for the counter-roller (s) of the second leaf (s) (44) which is formed on the underside of the horizontal wing (30 ), said third and fourth raceways being in the same vertical plane offset from the vertical plane which contains the first and second raceways by a distance at least equal to the thickness of a leaf. Lintel according to claim 1, characterized in that the control material (72) is fixed in each groove (48,50,52) by means of two screws or bolts (74,76) whose heads are trapped in the groove, and the nut (78.80) screwed onto the bolt rods. Lintel according to claim 1, characterized in that the control material (81) is fixed on a wing (82) of an L-shaped support (84), the other wing (86) of which is integral with the groove (48) by means of a bolt (88) and a nut (90), the second wing (86) comprising a finger (92) bent towards the inside of the groove. Lintel according to claim 5, characterized in that the finger is replaced by a bolt and a nut.

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