EP1083290B1 - Elevator door leaf - Google Patents

Description

The invention relates to an elevator door leaf after the The preamble of claim 1. Such an elevator door leaf is known from US-A-3,981,102.

At elevator doors are manifold safety requirements provided during the construction of the door panels used note. For example, the heat transfer be minimal by the elevator door, the door leaf a large and especially one-sided tilted mechanical To withstand stress. Known for this used Door leaves (see DE 196 45 517) are already made of two Walls, that is a front and back wall has been formed, which are welded together. By one or more Profile bends the back wall is an air space between Front and back wall ensures that sufficient for a sufficient provides heat-shielding property.

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

The rigid connection of the front wall with the rear wall ensures on the one hand for lasting stability, on the other Heating of the door leaf, for example in case of fire, is However, the door leaf by different thermal expansions mainly by temperature differences between front and Back wall bent.

However, bending a lift door in case of fire makes it more difficult opening a door jammed by bending and thus represents a certain security risk. In addition Here are the purpose of preventing flameout prescribed maximum permissible gap widths exceeded.

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

This object is based on a prior art of initially mentioned type by the characterizing features of claim 1.

Accordingly, an inventive door leaf is characterized characterized in that the heat resistant Connection is provided in the area of an upper receptacle, with the front wall and rear wall after provided at the top with an extension or fold, the together form the upper receptacle.

The heat-resistant compound ensures that the Elevator door leaf does not fall apart in case of fire and thus as a whole remains manageable while the under Heat action releasable connection between front and Rear wall in case of fire a relative movement between the allows both walls. This avoids that the door or the door leaf under heat bends, as is the case with a rigid connection over the entire surface 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 interfere with the extent of this Doors according to the prior art is the case, so that a allows easier handling and the permissible Gaps in case of fire should not be exceeded.

Preferably, the heat-resistant compound is in this case a not visible in the installed state of the elevator door Edge region of the door leaf arranged. Due to the arrangement in the marginal area, which in the installed state not is visible, results from the previous state of A better look of the door leaf at his Visible surfaces. For example, those used so far Welding points without elaborate post-processing hardly or only incomplete to conceal.

In an advantageous embodiment of the invention is for Realization of the heat-releasable connection provided a flat bonding. The surface bonding offers on the one manufacturing advantages, on the other In this way, properties can be realized that previously only distributed over the surface of the door leaf Welding points without large contact points of the front and the back wall were to be achieved. This includes a high Overall stiffness of the door leaf, which is now on the appropriate surface connection, but earlier by a corresponding number of welds has been achieved.

The bonding continues to be possible through use a corresponding material between the two walls of the Door leaf good sound and vibration damping at flat connection, without the front and rear wall touch directly.

Furthermore, with the help of a bond, a cold production possible, that is from the manufacturing step of bonding results in a flat, largely distortion-free door leaf, that no longer or at least compared with welded Door leaves need to be reworked little.

In a particular embodiment of the invention, the heat-resistant connection to a certain extent be formed compliant. This also allows for the heat resistant connection a relative movement to Compensation of different thermal expansions. Such Compliance is inventively possible because the required high rigidity of the door leaf substantially by the addition of heat releasable connection, for example, the surface bonding can be guaranteed.

For the heat-resistant compound come common Connecting means, such as rivets, screws, Rastverbindungen, welds or the like into consideration.

Advantageously, the door panel according to the invention only two-shelled. This will make the production and warehousing both in terms of parts diversity as also with regard to the assembly of the door leaf considerably simplified.

Advantageously, in addition, an upper receptacle on the door leaf provided by means of the door leaf to a Gehängewagen attach is. By means of such a Gehängegewagens can be move the door leaf guided in a lateral direction, so that, for example, a telescopic elevator door several side by side or in each other moving door leaves can be built.

According to the Invention will be the heat-resistant connection between the Front and rear wall in the area of the upper receptacle intended. This heat resistant connection can For example, combined with the attachment to the hanging trolley become. So, for example, with one and the same Screwing the attachment to the Gehängewagen and the Connection between front and back wall are made. The arrangement of this heat-resistant compound in the upper recording also causes that when solving the not heat resistant connection in case of fire both the Vorderals also the rear wall attached to the hanging trolley attached stay.

Advantageously, the upper receptacle of the door leaf formed by molding in the front and / or rear wall. As a result, the effort in the production of the door panel reduced and in particular the above-mentioned bivalve Construction favors.

In one embodiment of the invention, the front and the rear wall in the area of the upper receptacle in the Gehängewagen clamped or jammed. For one thing is through this Tension or jamming in the Gehängewagen the heat-resistant connection between the front and rear wall realized. On the other hand, this tension in the Gehängewagen the transverse stability of the door leaf in the built-in 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 rectangular or trapezoidal cross-sectional profile by embossing in a or both of said door leaf walls is to be introduced, increases the rigidity of the door leaf considerably and can at the same time serve as spacers.

The longitudinal profile bending is this preferably continuously over the entire length of the door panel attached, so that corresponding bending moments, for example, by mechanical load in the middle area of the door leaf act continuously without weak spots in the edge area be derived.

Advantageously, at least one is in the edge region Cross profile bending provided the longitudinal profile bend at least partially overlaps. This results in a Supporting the longitudinal profile bending on the cross profile during Occurrence of bending stresses in the door leaf and accordingly a further improvement in bending stability.

The longitudinal profile bending as well as the transverse profile bending can as well as the above recordings in a single Operation in the front and / or the rear wall be embossed. Especially in conjunction with the only clam-shell construction thus results in a much cheaper Production costs, since this only the two for education the front or rear wall used in formed an embossing tool and then together need to be connected.

In an advantageous embodiment of the invention, the non-heat resistant compound, e.g. B. the bonding, along the Längsprofilbiegungen made. These Longitudinal profile bends not only increase, as indicated above, advantageously the rigidity of the invention Türblatts, but they also bridge the gap between the front and the rear wall, so that at this Make a connection also in the middle area of the door leaf without costly measures is possible. In the space between the longitudinal profile bends remains Airspace obtained, the heat and sound insulating effect.

In the case of a rectangular or trapezoidal cross-section the longitudinal profile bend is along the crosspiece of this Longitudinal profile bending a comparatively large longitudinal extending bonding between the two door leaf walls possible.

In addition, a special embodiment in the Edge area, for example in the area of a Cross profile bending as mentioned above another cross running bonding to be made to the stability the door leaf continues to improve.

The bonding can be continuous over the entire Longitudinal profile bending to be made, as opposed to previously customary spot welding when bonding a material can be used by means of which the desired Properties, such as the desired Schwingungsbeziehungsweise Soundproofing and the required Thermal insulation even with a comparatively large area Connection are to be realized, and just this large-scale training a corresponding rigidity allows.

Such a bond can advantageously with the help an elastic adhesive strip can be realized. With help such an adhesive strip can be relatively much material in the area of the junction and then Press, without the comparatively tough material at the compression is displaced. With this embodiment can be a particularly vibration and sound-absorbing Realize embodiment, where an overall low tension between the front and rear wall is guaranteed. The comparatively large wall thickness of a such elastic adhesive tape allows appropriate Relative movements between the two door leaf walls in glued condition and thereby ensures one Stress compensation, but still a very high rigidity is guaranteed.

In a further development of the invention are spacers with preferably small contact surface between the front and Rear wall provided, for example, turn can be embossed. Such spacers allow for example, using liquid glue with subsequent compression of the front and rear walls without the liquid adhesive is displaced during the compression. The Spacers ensure this while for small immediate Points of contact between the front and back wall, these However, they can be pointed or at least smaller Be formed contact surface that still no significant vibration or sound transmission between the both door leaf walls takes place.

In a particular embodiment of the invention, the Connection between the front and rear wall of the door leaf accomplished by the intervening Voids are foamed. In addition to a huge large-area and accordingly stiff connection is with the foaming of the cavities at the same time an extremely high Sound and vibration damping ensured.

As an adhesive for a connection between front and back wall come a variety of commercially available plastic adhesive in question, wherein also future adhesives according to the invention in To consider. For example, as an adhesive Acrylates, one- or multi-component epoxy resins, one or more multicomponent polyurethanes, cyanoacrylate adhesives, on or multi-component silicone adhesive and / or so-called one-component anaerobic adhesives are used.

The door leaves for elevator doors are usually next to the upper, ceiling-side recording with a bottom-side Guided by which they are in the buildings or the Elevator cabs 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 recording same be formed. In conjunction with a total rotationally symmetrical training of the essential Design features with respect to a rotation of 180 ° can Such a door leaf thus left and right in a telescoping elevator door can be used. For this Depending on the installation position, it is used rotated by 180 °, after which it has a mirrored about the longitudinal axis shape. There is no need for different links right side door leaves are made. The number of different necessary parts is reduced thus, with the number of equally formed parts increased which allows a more cost-effective production.

Not only the falling apart of the two door leaf walls in case of fire, but also too great a gap formation and the penetration of hot air into the interior of the elevator door Several other heat resistant compounds can be avoided in the Edge area, for example, rivets are provided. Also these joints are preferably compliant formed, so that a certain delay between the two Elevator walls is possible. This is for example at the Use of rivets in comparatively small number of Case, the two door leaf walls not worth mentioning stiffen against each other, but only to each other baste.

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

An embodiment of the invention is in the drawing and will become more apparent from the figures below 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

4 is a detail of a perspective view of the upper side of a door leaf according to the invention,

Fig. 2

a detail of a perspective view of the underside of a door panel according to the invention,

Fig. 3

a rear view of a door panel according to the invention,

Fig. 4

a top view of a door panel 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, only in the right upper and in the lower left corner of the door panel. 1 is shown.

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

Both the front wall 2 and the rear wall 3 are after at the top or bottom with a fold 6a, b or Extension 7a, b provided, which together an upper Receiving 8 and a lower guide 9 of the door panel 1 form. For clamping in a not shown Gehängewagen this are screw holes 10 in the receptacle. 8 provided by means of which the receptacle 8 in a Gehängewagen bolted and can be clamped. At the same time, the front wall 2 and the rear wall 3 heat-resistant connected.

For locking of sliding or non-illustrated Rolling elements are corresponding recesses 11 in the off Bend 6a, b or extension 7a, b formed guide. 9 intended.

The folds 6a, b or extensions 7a, b are above and each formed the same below. Furthermore, the Longitudinal profile bends 4a, b, c as well as the entire structure of the door leaf 1 rotationally symmetric with respect to a rotation around 180 ° formed so that a door panel according to the invention 180 ° twisted usable, that is, such a door leaf is both left-sided and right-sided in one Telescopic door usable without further construction measures. In FIG. 3 shows, in particular, that the Längsprofilbiegungen 4a, b, c over the entire length or Height H of the elevator door continuously into the rear wall. 3 are stamped, resulting in a high bending stiffness results.

In the illustration according to FIG. 4, it can also be seen that the Longitudinal profile bends 4a, b, c a substantially have rectangular cross-section, so that the transverse webs 12 close to the front wall 2, whereby, as farther below, the attachment between the rear wall. 3 and the front wall 2 at this point especially good is to be made.

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

In the side view of Figure 5 is next to the Carrying profiles 13, 14 easily recognizable, like the upper one Transverse profile bend 5a of the front wall 2, the corresponding Longitudinal profile bending 4a of the rear wall 3 overlaps. The education the receptacle 8 by the fold 6a and the Extension 7a is also good on the basis of this presentation to recognize.

A joint 15 for a heat-resistant Connection, z. B. a screw in a no closer illustrated hanging trolley is with dash-dotted line shown. It is in this illustration readily recognizable that by connecting the front wall 2 with the Rear wall 3 at this point the two door leaf walls also at a release of the other joints together in Gehängewagen remain suspended and accordingly too Press, that is to move laterally.

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

The splice 16 and the adhesive strip 17 extend essentially over the entire width of the crosspiece 12 of the Longitudinal profile bending 4a as well as over its entire length. This results in a large-area bonding with corresponding stiffening of the door leaf 1. At the same time is a sufficient amount of elastic and thus vibration or Sound-absorbing and heat-insulating material with the Adhesive strip 17 between the front wall 2 and the rear wall. 3 contribute. This results in a very low Sound transmission between the front wall 2 and the Rear wall 3 and a good thermal insulation of Door leaf in the transverse direction. The front wall 2 touches the Rear wall 3 in this case only edge side in the receptacle. 8 or the leadership 9 directly.

The bonding is a production in cold Pressing the front wall 2 with the rear wall 3 possible. This already results in significantly lower voltages in the door leaf 1 as this in the recent welding of Case was. Low, possibly caused by the pressing Residual stresses can also be caused by the elastic material of the Adhesive strip 17 can be compensated. Thus results Overall, a distortion-free, precisely fitting 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 panel are. very small gap between individual door leaves at the Creation of an elevator door possible. By the flat Compound, in particular in connection with the Longitudinal profiles 4a, b, c and the overarching Transverse profile bends 5a, b results in an extremely high Stiffness, all, in different countries due required by law.

Due to the common suspension of the front wall 2 with the Rear wall 3 in the receptacle 8 in the Gehängewagen results in a heat-resistant compound that ensures that both the Front wall 2 and the rear wall 3, even in case of fire slidably suspended in the Gehängewagen are.

The splice 16, however, can by melting the Adhesive strip 17 are dissolved in case of fire. This will a bimetallic bending of the elevator door leaf 1 below prevented high heat, so that the door leaves 1 according to the invention also formed elevator door after great heat by shifting against each other the elevator door leaves 1 is open.

The entire door leaf 1 is only two embossed parts formed, which form the front wall 2 and the rear wall 3. The Manufacture of the door panel 1 is thus very low Effort possible. The shape of the front wall 2 and the Back wall 3, d. H. the corresponding folds or Bends and the associated punched can in one single operation.

Depending on the requirements can be over the illustrated heat-resistant Compound in the receptacle 8 more heat-resistant compounds, For example, rivets in the edge region of the door panel 1 to Attaching the front wall 2 attached to the rear wall 3 become. This additional fixation, which at the illustrated forms, for example in the field of Mitnahmeprofils 14 can be attached prevents in the Essentially a gap formation by spreading the Front wall 2 opposite the rear wall 3 in the of the recording 8 spaced areas. By appropriate column could hot gas penetrate into the gap and thus for a provide appropriate heat through the front wall 2. By the lower guide 9, the both sides in a not closer is shown guided bottom side guide rail, can a corresponding spreading in the ground near area be avoided, if, for example, the usually present, the guides 9 embracing Rail accordingly runs tightly on the guides 9 or the associated sliding or rolling elements accordingly are made heat resistant.

Overall, it should be noted that one of inventive Door leaves 1 formed elevator door a small one Manufacturing costs caused a good sound and Ensures thermal insulation and very high rigidity, In addition, a significant improvement in safety guaranteed in case of fire. In addition, one is Execution possible, in which the visible surface of the Front wall 2 in her view not by the Attachment measures is impaired, as in the case of Spot welding was the case.

LIST OF REFERENCE NUMBERS

1

door leaf

2

front wall

3

rear wall

4a

Longitudinal profile bending

4b

Longitudinal profile bending

4c

Longitudinal profile bending

5a

Cross Section bending

5b

Cross Section bending

6a

fold

6b

fold

7a

renewal

7b

renewal

8th

admission

9

guide

10

screw

11

recess

12

crosspiece

13

driving profile

14

driving profile

15

junction

16

splice

17

tape

Claims (15)

1. Lift door panel (1) with a front wall (2) and a back wall (3), wherein connecting means (17) which are releasable under the action of heat are provided between the front wall and back wall and wherein in addition at least one heat-resistant connection (10, 15) is provided, characterised in that the heat-resistant connection is provided in the region (15) of an upper mounting (8), wherein the front wall and rear wall are provided upwardly with an extension (7a) or flange, which together form the upper mounting (8).
2. Lift door panel according to claim 1, characterised in that the heat-resistant connection is arranged in the edge region (15), which is not visible in the installed state of the lift door, of the door panel (1).
3. Lift door panel according to one of the preceding claims, characterised in that an upper mounting (8) for the fastening of the door panel (1) in a suspension carriage is provided.
4. Lift door panel according to one of the preceding claims, characterised in that the door panel (1) is constructed to be double-skinned from just the front wall (2) and the back wall (3).
5. Lift door panel according to one of the preceding claims, characterised in that the mounting (8) is integrally shaped into the front wall (2) and/or the back wall (3).
6. Lift door panel according to one of the preceding claims, characterised in that the front wall (2) and the back wall (3) are clamped in the suspension carriage.
7. Lift door panel according to one of the preceding claims, characterised in that at least one bent longitudinal profile member (4a, b, c) is provided in the front wall (2) and/or the back wall (3).
8. Lift door panel according to one of the preceding claims, characterised in that the bent longitudinal profile member (4a, b, c) is formed to be continuous over the entire length or height H of the door panel (1).
9. Lift door panel according to one of the preceding claims, characterised in that a bent transverse profile member (5a, b), which at least partly engages over the bent longitudinal profile member (4a, b, c), is provided at the edge side.
10. Lift door panel according to one of the preceding claims, characterised in that the gluing is provided along the bent longitudinal profile member (4a, b, c).
11. Lift door panel according to one of the preceding claims, characterised in that the gluing is formed to be continuous over the entire length of the bent longitudinal profile member (4a, b, c).
12. Lift door panel according to one of the preceding claims, characterised in that spacers are stamped into the front wall (2) and/or the back wall (3).
13. Lift door panel according to one of the preceding claims, characterised in that the cavity between the front wall (2) and the back wall (3) is at least partly filled with foam.
14. Lift door panel according to one of the preceding claims, characterised in that the door panel is constructed to be rotationally symmetrical with respect to a rotation through 180°.
15. Lift door panel according to one of the preceding claims, characterised in that the front wall (2) and the back wall (3) are glued together by means of an acrylate, a single or multiple component epoxy resin, a single or multiple component polyurethane, a cyanoacrylate adhesive, a single or multiple component silicon adhesive and/or a so-called single component anaerobic adhesive substance.

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