EP1083290A1 - Elevator door leaf - Google Patents

Abstract

The elevator door comprises means (17) which join the front and rear walls (2, 3) to one another and release them from one another under the influence of heat. Additionally the door is provided with at least one heat resistant joint between its front and rear walls.

Description

The invention relates to an elevator door leaf according to the Preamble of claim 1.

There are various safety requirements for elevator doors provided to the door leaves used in the construction note. For example, heat transfer through the elevator door to be minimal, with the door leaf one large and especially one-sided canted mechanical To withstand stress. Known used for this Door leaves (cf. DE 196 45 517) are already made of two Walls, that is, a front and rear wall were formed, which are welded together. By one or more Profile bends of the rear wall is an air space between Front and rear wall ensures that there is sufficient heat shielding property.

The connection of the two walls is done by spot welding appropriate expressions made so that by the Connection as little contact as possible between the two opposite walls is made.

The rigid connection of the front wall to the rear wall ensures on the one hand for lasting stability, with one Heating the door leaf, for example in the event of a fire however, the door leaf due to different thermal expansions mainly due to temperature differences between the front and Bent back wall.

However, bending an elevator door in the event of a fire makes it more difficult opening a door stuck due to bending and therefore represents a certain security risk. Also are used to prevent flame penetration prescribed maximum permissible gap widths exceeded.

The object of the invention is therefore a door leaf to propose that all stability requirements for a Elevator door with regard to mechanical stress, smooth running and sound transmission while avoiding the above disadvantage enough.

This task is based on a prior art type mentioned in the introduction by the characteristic features of claim 1 solved.

Accordingly, a door leaf according to the invention is distinguished characterized in that connecting means between the front and Rear wall are provided, which are exposed to heat solve, in addition at least one heat-resistant Connection is provided.

The heat-resistant connection ensures that the Elevator door leaf does not fall apart in the event of fire and therefore remains manageable as a whole, while the under Heat releasable connection between front and In the event of fire, a relative movement between the allows both walls. This avoids that the door or the door leaf under the influence of heat bends like this with a rigid connection over the total area of the door leaf due to different Thermal expansion would be the case.

An elevator door constructed with door leaves according to the invention Accordingly, it does not jam as much as in Doors according to the prior art is the case, so that a allows easier handling and the permissible Gap widths should not be exceeded in the event of a fire.

The heat-resistant connection is preferably in one not visible when the elevator door is installed Edge area of the door leaf arranged. By the arrangement in edge area, which is not when installed compared to the previous status of Technique a better look of the door leaf on his Visible surfaces. For example, the ones used so far Hardly or only welding spots without extensive post-processing to hide incompletely.

In an advantageous development of the invention Realization of the connection that can be released under the influence of heat surface gluing is provided. The flat adhesive offers advantages in terms of manufacturing technology, on the other this allows properties to be realized that were previously only by distributed over the surface of the door leaf Spot welds without large points of contact between the front and the back wall could be achieved. This includes a high one Overall stiffness of the door leaf, which is now over the Corresponding flat connection, but earlier by a corresponding number of welding spots was achieved.

The gluing continues through the use a corresponding material between the two walls of the Door leaf good sound and vibration damping flat connection without the front and rear wall touch immediately.

Furthermore, with the help of an adhesive, cold production possible, that means from the manufacturing step of gluing the result is a flat, largely warp-free door leaf, no longer, or at least compared to welded ones Door leaves only need to be reworked a little.

In a particular embodiment of the invention, the heat-resistant connection to a certain extent be trained resiliently. This also enables the heat-resistant connection a relative movement to the Compensation for different thermal expansions. Such According to the invention, compliance is possible because the required high rigidity of the door leaf essentially due to the additional attached under the influence of heat Detachable connection, for example the two-dimensional gluing can be guaranteed.

Common ones come for the heat-resistant connection Connecting means, for example rivets, screws, Snap connections, weld spots or the like into consideration.

The door leaf according to the invention is advantageously only two-shell structure. This is the manufacturing and warehousing both with regard to the variety of parts Considerable also with regard to the assembly of the door leaf simplified.

An upper receptacle on the door leaf is also advantageous provided by means of which the door leaf is attached to a suspension trolley attach is. By means of such a stroller, move the door leaf in a lateral direction, see above that, for example, a telescopic elevator door several side or side door leaves can be built.

In a particularly advantageous embodiment of the Invention is the heat-resistant connection between the Front and rear wall in the area of the upper mount intended. This heat resistant connection can For example, combined with the attachment to the trolley become. For example, with one and the same Screwing the attachment to the suspension trolley and the Connection between front and rear wall can be made. The arrangement of this heat-resistant connection in the top recording also causes that when loosening the not heat-resistant connection in the event of fire, both the front and the rear wall is also attached to the hanging trolley stay.

The upper receptacle of the door leaf is advantageously formed by molding in the front and / or rear wall. This reduces the effort involved in the manufacture of the door leaf reduced and in particular the above-mentioned two-shell Construction favored.

In a development of the invention, the front and the rear wall in the area of the upper receptacle in the hanging trolley tense or jammed. For one, it is through this Tension or jamming in the sledge carriage heat-resistant connection between the front and rear wall realized. On the other hand, this tension in the The lateral stability of the door leaf in the built-in trolley Condition increased.

Advantageously, at least one longitudinal profile bend in the front and / or the rear wall provided. Such Longitudinal profile bending, for example with a right angle or trapezoidal cross-sectional profile by embossing in one or both of the door leaf walls mentioned must be installed, increases the rigidity of the door leaf considerably and can also serve as a spacer.

For this purpose, the longitudinal profile bending is preferably carried out continuously attached the entire length of the door leaf so that corresponding bending moments, for example, by mechanical load in the middle area of the door leaf act, continuously without weak points in the edge area be derived.

At least one is advantageously in the edge region Cross-section bending provided that the longitudinal profile bending overlaps at least partially. This results in a Support of the longitudinal profile bend on the cross profile at Occurrence of bending stresses in the door leaf and accordingly a further improvement in bending stability.

The longitudinal profile bending and the transverse profile bending can just like the recordings above in one Work process in the front and / or the rear wall be impressed. Especially in connection with the only double-shell construction thus results in an enormously favorable Manufacturing effort, since only the two for education the front or rear wall used sheet metal in an embossing tool and then together need to be connected.

In an advantageous development of the invention, the not heat-resistant connection, e.g. B. the bonding, made along the longitudinal profile bends. This Longitudinal profile bends not only increase, as stated above, advantageously the rigidity of the invention Door leaf, but at the same time they bridge the distance between the front and rear walls, so that on this Make a connection also in the middle area of the door leaf is possible without complex measures. In the gap remains between the longitudinal profile bends Preserve air space that has heat and sound insulation.

In the case of a rectangular or trapezoidal cross-section the longitudinal profile bend is along the crossbar Longitudinal profile bending a comparatively large area along running gluing between the two door leaf walls possible.

In addition, a special embodiment in Edge area, for example in the area of a Cross section bending as mentioned above another cross trending gluing to be made for stability to further improve the door leaf.

The gluing can be carried out continuously over the entire Longitudinal profile bending are made, because in contrast to previously common spot welding when gluing a material can be used by means of which the desired Properties such as the desired mode of vibration or Sound absorption and the required Thermal insulation also with a comparatively large area Connection to be realized, and this is exactly large-scale training a corresponding rigidity enables.

Such an adhesive can advantageously with the help an elastic adhesive strip can be realized. With help Such an adhesive strip can be relatively much material Apply in the area of the connection point and then compress without the comparatively tough material the pressing is displaced. With this embodiment can be a particularly vibration and sound absorbing Realize embodiment, with an overall extreme low tension between the front and rear wall is guaranteed. The comparatively large wall thickness of a such elastic adhesive strip allows appropriate Relative movements between the two door leaf walls in glued condition and thereby ensures a Tension compensation, but still a very high rigidity is guaranteed.

In a further development of the invention, spacers are used with preferably small contact area between the front and Rear wall provided, for example in turn can be impressed. Allow such spacers for example using liquid glue then pressing the front and rear walls without the liquid adhesive is displaced during pressing. The Spacers ensure small immediate ones Points of contact between the front and rear walls, these but can be pointed or at least smaller Contact surface are formed that still none significant vibration or sound transmission between the both door leaf walls takes place.

In a special development of the invention Connection between the front and rear wall of the door leaf accomplished in that the intervening Cavities are foamed. In addition to an enormous large and accordingly rigid connection is with the foaming of the cavities is also extremely high Sound and vibration damping guaranteed.

As an adhesive for a connection between the front and rear wall come a wide variety of commercially available plastic adhesives into question, future adhesives according to the invention also in Are to be considered. For example, as an adhesive Acrylates, one or more component epoxy resins, one or multi-component polyurethanes, cyanoacrylate adhesive, one or multi-component silicone adhesive and / or so-called single-component anaerobic adhesives can be used.

The door leaves for elevator doors are usually next to the upper, ceiling-side receptacle with a floor-side Provide guidance by means of which they in the buildings or the Elevator cabins are attached and guided. Another great advantage in the design of an inventive Elevator door leaf results from the fact that the bottom side Guide part and the ceiling-side mount the same be formed. Combined with an overall rotationally symmetrical training of the essential Design features with respect to a rotation through 180 ° can such a door leaf thus left and right in a telescopic elevator door can be used. For this depending on the installation position, it is used rotated by 180 °, after which it has a shape mirrored about the longitudinal axis. So there is no need for different left and right right-hand door leaves are manufactured. The number of different necessary parts is reduced thus, increasing the number of identical parts becomes what allows a more cost-effective production.

Not just about the two door leaf walls falling apart in the event of a fire, but also excessive gap formation and the penetration of hot air inside the elevator door can avoid several more heat-resistant connections in the Edge area, for example rivets can be provided. Also these junctions are preferably compliant trained so that a certain delay between the two Elevator walls is possible. This is the case with the Use of rivets in a comparatively small number of Case that the two door leaf walls are not worth mentioning stiffen against each other, but only against each other staple.

The front is preferably made of a material with the desired look, for example from a stainless steel sheet manufactured. Depending on your wishes, you can also use a corresponding one Covering or a corresponding coating applied be while on the back, in a telescopic door is not visible, one accordingly cheaper steel can be used.

An embodiment of the invention is in the drawing shown and will be explained in more detail below with reference to the figures explained.

Fig. 1

einen Bildausschnitt einer perspektivischen Darstellung der Oberseite eines erfindungsgemäßen Türblatts,

Fig. 2

einen Bildausschnitt einer perspektivischen Darstellung der Unterseite eines erfindungsgemäßen Türblatts,

Fig. 3

eine Rückansicht eines erfindungsgemäßen Türblatts,

Fig. 4

eine Draufsicht von oben auf ein erfindungsgemäßes Türblatt,

Fig. 5

eine Teildarstellung des erfindungsgemäßen Türblatts in der Seitenansicht und

Fig. 6

einen Ausschnitt aus einem Querschnitt durch ein erfindungsgemäßes Türblatt.

Show in detail

Fig. 1

1 shows a detail of a perspective view of the top of a door leaf according to the invention,

Fig. 2

1 shows a detail of a perspective view of the underside of a door leaf according to the invention,

Fig. 3

3 shows a rear view of a door leaf according to the invention,

Fig. 4

a top view of a door leaf according to the invention,

Fig. 5

a partial view of the door panel according to the invention in side view and

Fig. 6

a section of a cross section through an inventive door leaf.

The door leaf 1 according to Figures 1 and 2 consists of a Front wall 2 and a rear wall 3, which is only in the right upper and in the lower left corner area of the door leaf 1 is shown.

The rear wall 3 comprises three longitudinal profile bends 4a, b, c, of which in Figure 1 only the two longitudinal profile bends 4a, b and in Figure 2 the longitudinal profile bends 4b, c partially are recognizable. The front wall 2 comprises at its upper edge a transverse profile bend 5a and on its underside Cross section bend 5b, which are each of the same design and overlap the longitudinal profile bends 4a, b, c.

Both the front wall 2 and the rear wall 3 are behind at the top or bottom with a bevel 6a, b or Extension 7a, b provided, together an upper Form receptacle 8 or a lower guide 9 of the door leaf 1. For clamping in a not shown For this purpose, suspension trolleys are screw holes 10 in the receptacle 8 provided by means of which the receptacle 8 in one Can be screwed and clamped. Here, the front wall 2 and the rear wall 3 heat-resistant bonded together.

To snap in sliding or not shown Rolling elements are corresponding recesses 11 in the Bend 6a, b or extension 7a, b formed guide 9 intended.

The bevels 6a, b and extensions 7a, b are above and each trained below. Furthermore, the Longitudinal profile bends 4a, b, c as well as the entire structure of the door leaf 1 rotationally symmetrical with respect to a rotation Formed 180 ° so that an inventive door leaf around Can be used rotated by 180 °, that is, such a door leaf is both left and right in one Telescopic door can be used without any further structural measures. In Figure 3 is particularly recognizable that the Longitudinal profile bends 4a, b, c over the entire length or Height H of the elevator door continuously into the rear wall 3 are embossed, resulting in a high bending stiffness results.

In the illustration according to Figure 4 it can also be seen that the Longitudinal profile bends 4a, b, c essentially one have a rectangular cross-section, so that their crossbars 12 close to the front wall 2, whereby how further The attachment between the rear wall 3 is explained below and the front wall 2 is particularly good at this point is to be made.

Furthermore, it can be seen in this illustration that the edge by bending the front wall 2 driving profiles 13, 14 are formed by means of which adjacent door leaves 1 can be hooked into each other. On a train on one Such door leaf of a telescopic elevator door is thus the hinged door leaf arranged adjacent to this pulled along.

5 is next to the Take-along profiles 13, 14 clearly visible, like the upper one Cross section bend 5a of the front wall 2 the corresponding Longitudinal profile bend 4a overlaps the rear wall 3. The education the receptacle 8 by the fold 6a or Extension 7a is also good based on this illustration to recognize.

A junction 15 for a heat resistant Connection, e.g. B. a screw in one not closer shown sling carriage is with dash-dotted line shown. It is straightforward in this illustration recognizable that by connecting the front wall 2 with the Rear wall 3 at this point also the two door leaf walls a release of the other connection points together in the Hanging trolleys remain suspended and accordingly press, that means to be moved laterally.

In the cross-section shown in detail according to FIG. 6 is the advantageous by the enlarged view Arrangement of an adhesive point 16 in the region of the crosspiece 12 a longitudinal profile bend 4a can be seen. An adhesive strip 17 made of elastic material bridges the remaining one Remaining distance between the front wall 2 and the crossbar 12.

The adhesive point 16 or the adhesive strip 17 extend essentially over the entire width of the crosspiece 12 of the Longitudinal profile bend 4a as well as over its entire length. This results in a large-area gluing with appropriate stiffening of the door leaf 1. At the same time is one sufficient amount of elastic and thus vibration or anti-shock and heat insulating material with the Adhesive strips 17 between the front wall 2 and the rear wall 3 bring in. This results in a very low one Sound transmission between the front wall 2 and the Rear wall 3 and good thermal insulation of the Door leaf in the transverse direction. The front wall 2 touches the Rear wall 3 here only in the edge of the receptacle 8 or the guide 9 immediately.

Due to the gluing, production is cold Compression of the front wall 2 with the rear wall 3 possible. This already results in significantly fewer tensions in door leaf 1 than this with the previous welding of Case was. Minor, possibly caused by the pressing Residual stress can also be caused by the elastic material of the Adhesive strip 17 are balanced. Hence it follows overall a distortion-free, precise fit and highly rigid Execution of an elevator door leaf 1, which hardly reworked must become.

Due to the high dimensional accuracy of such a door leaf. very small gap between individual door leaves at the Creation of an elevator door possible. Through the flat Connection, especially in connection with the Longitudinal profiles 4a, b, c and the overarching Cross-section bends 5a, b result in an extremely high Stiffness due to all, in different countries legal requirements meet the required requirements.

Due to the common suspension of the front wall 2 with the Rear wall 3 in the receptacle 8 in the suspension carriage results in a heat resistant connection that ensures that both the Front wall 2 and the rear wall 3 even in the event of a fire are slidably suspended in the trolley.

The glue point 16, however, can by melting the Adhesive strip 17 can be released in the event of a fire. This will a bimetal-like bending of the elevator door leaf 1 under great heat, so that the out Door leaves 1 according to the invention also formed elevator door after high heat exposure by moving against each other the elevator door leaves 1 can be opened.

The entire door leaf 1 is only made of two embossed parts formed, which form the front wall 2 and the rear wall 3. The Manufacture of the door leaf 1 is very little Effort possible. The shape of the front wall 2 and the Rear wall 3, d. H. the corresponding folds or Bends as well as the associated punchings can be done in one single operation.

Depending on the requirements, you can use the heat-resistant shown Connection in the receptacle 8 further heat-resistant connections, for example rivets in the edge area of the door leaf 1 for Attach the front wall 2 to the rear wall 3 become. This additional fixation that the Shown forms for example in the area of Driving profile 14 can be attached, prevents in Essentially a gap formation by spreading the Front wall 2 opposite the rear wall 3 in the of the recording 8 spaced areas. Through appropriate column could hot gas penetrate into the space and thus for a ensure appropriate heat supply via the front wall 2. By the lower guide 9, the two sides in one not closer The bottom guide rail shown is guided, can a corresponding spreading in the area near the ground also be avoided, for example, provided that Usually existing, 9 embracing the guides Profile rail runs correspondingly close to the guides 9 or the associated sliding or rolling elements accordingly are designed to be heat-resistant.

Overall, it should be noted that one of the invention Door leaves 1 formed elevator door a small Manufacturing costs caused a good sound and Thermal insulation and very high rigidity ensure being in addition a significant improvement in security is guaranteed in the event of fire. In addition, one Execution possible in which the visible area of the Front wall 2 in their view not through the Fastening measures impaired, as in the Spot welding was the case.

Reference symbol list:

1

Door leaf

2nd

Front wall

3rd

Back wall

4a

Longitudinal profile bending

4b

Longitudinal profile bending

4c

Longitudinal profile bending

5a

Cross section bending

5b

Cross section bending

6a

Folding

6b

Folding

7a

renewal

7b

renewal

8th

admission

9

guide

10th

Screw hole

11

Recess

12th

Crossbar

13

Take-away profile

14

Take-away profile

15

Liaison

16

Glue point

17th

Adhesive strips

Claims (16)

Elevator door leaf (1) with a front wall (2) and one Rear wall (3), characterized in that connecting means (17) are provided between the front and rear walls are soluble under the influence of heat, whereby additionally at least one heat-resistant connection (10, 15) is provided. Elevator door leaf according to claim 1, characterized in that the heat-resistant connection in the installed state the edge area (15) of the elevator door which is not visible Door leaf (1) is arranged. Elevator door leaf according to one of the preceding claims characterized in that an upper receptacle (8) for Fastening the door leaf (1) in a hanging trolley is provided. Elevator door leaf according to one of the preceding claims characterized in that the heat-resistant connection in Area (15) of the upper receptacle (8) is provided. Elevator door leaf according to one of the preceding claims characterized in that the door leaf (1) only two shells is built up from the front wall (2) and the rear wall (3). Elevator door leaf according to one of the preceding claims characterized in that the receptacle (8) in the Front wall (2) and / or the rear wall (3) is molded. Elevator door leaf according to one of the preceding claims characterized in that the front wall (2) and the The rear wall (3) is clamped in the suspension trolley. Elevator door leaf according to one of the preceding claims characterized in that at least one Longitudinal profile bend (4a, b, c) in the front wall (2) and / or the rear wall (3) is provided. Elevator door leaf according to one of the preceding claims characterized in that the longitudinal profile bend (4a, b, c) throughout the entire length or height H of the Door leaf (1) is formed. Elevator door leaf according to one of the preceding claims characterized in that an edge Cross-section bend (5a, b) is provided, which Longitudinal profile bend (4a, b, c) at least partially spreads. Elevator door leaf according to one of the preceding claims characterized in that the gluing along the Longitudinal profile bend (4a, b, c) is provided. Elevator door leaf according to one of the preceding claims characterized in that the bond continuously over the entire length of the longitudinal profile bend (4a, b, c) is trained. Elevator door leaf according to one of the preceding claims characterized in that spacers in the Front wall (2) and / or the rear wall (3) are embossed. Elevator door leaf according to one of the preceding claims characterized in that the cavity between the Front wall (2) and the rear wall (3) at least partially is foamed. Elevator door leaf according to one of the preceding claims characterized in that the door leaf is rotationally symmetrical is constructed with respect to a rotation of 180 °. Elevator door leaf according to one of the preceding claims characterized in that the front wall (2) and the Rear wall (3) through an acrylate, a one or multi-component epoxy resin, a single or multi-component Polyurethane, a cyanoacrylate adhesive, a one or multi-component silicone adhesive and / or a so-called one-component anaerobic adhesive glued together are.

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