EP3318710B1 - Door threshold system - Google Patents

Description

The invention relates to a door sill system for a house door, a tilt and turn door or the like, with a door frame with a floor sill and at least one swing door leaf according to the preamble of claim 1.

Such a door threshold system is from NL 1 021 461 C2 known.

The threshold of a door arrangement represents both a sensitive and a critical area of the building closure. On the one hand, the threshold should be designed to be as barrier-free as possible and therefore provide a low stepping height. On the other hand, the penetration of driving rain etc. must be reliably prevented.

That's it DE 20 2014 102 797 U1 a door sill system for a house door, a shop door or the like with a door frame with a floor sill and at least one revolving door leaf has become known, which is designed to be almost completely barrier-free. For this purpose, an adapter profile is mounted on the floor-side shiplap of the revolving door leaf, which leaves a narrow gap between the underside of the revolving door leaf and the threshold, which, however, extends across the entire thickness of the door leaf. This gap is also sealed by means of a lowerable sealing strip and/or brush seal.

With such a construction, it is indeed possible to achieve a high level of barrier-free access in the door sill area. On the other hand, however, such a construction is not suitable for producing reliable protection against driving rain. In practice, the sealing elements mounted on the underside of the adapter profile are not sufficient to create a reliable building closure. The fact that there is a grid on the outside in the step area, through which moisture can be drained to the outside, does not change that. This well-known design is therefore particularly suitable for Doors in the interior or in covered rooms such as in shopping arcades or the like.

A more or less suitable protection against driving rain, on the other hand, is generally achieved with conventional door sill systems in that sloping profiles with undercuts provide protection against the ingress of liquid. Even under wind loads, the moisture would then have to be driven up against its gravity and get caught on undercut edges etc. This effect is further improved by the fact that the threshold starts higher than the outside floor so that no additional moisture gets onto the threshold from the outside. This achieves useful building protection. Following this in the direction of the inside, two sealing levels then usually produce thermal decoupling from the door leaf.

However, the disadvantage of this type of construction is that in extreme wind conditions, etc., liquids can still enter. The gradually increasing profiles in the threshold area can then only insufficiently hold back the water masses.

A further disadvantage is that this results in a relatively large structure in the threshold area in order to provide a sufficient run-off slope. This means that a low stepping height cannot be achieved. Exceeding such a threshold is therefore not unproblematic.

That from the NL 1 021 461 C2 known door sill system has a base body with a grid-like tread area. A water-collecting channel is intended to drain water that accumulates in groove-like depressions in the lattice area to the outside. Since the water collection channel is horizontal, dirt can accumulate here. Furthermore, running water can get under the threshold and thus into the masonry or foundation.

The EP 2431 560 A1 shows a speed bump with a closed tread area and a water channel sloping outwards. A film is arranged on an underside of the threshold.

From the U.S. 2015/096235 A1 and the WO 94/17276 A1 speed bumps with closed tread areas are known.

The invention is based on the object of further developing a door sill system of the generic type in such a way that its structural height can be reduced and particularly good driving rain protection is achieved.

This problem is solved by a door sill system with the features of claim 1.

The door sill system according to the invention thus provides for the provision of a sealing plane as a necessary element for reliable protection against driving rain. It has been shown within the scope of the invention that a secure and permanent sealing effect is only achieved through the interaction of the stop rabbet on the revolving door leaf with the stop on the base body.

At the same time, however, the invention also provides for the provision of a lattice-like structure for the tread area. This enables the door sill system to be particularly tight against driving rain. Moisture that is present or even driving rain are thus not conducted in the direction of the interior of the door arrangement, but diverted between the lattice bars of the tread area. In the at least one water collection chamber, moisture is thus trapped and prevented from progressing. At the same time, the moisture is removed in a controlled and targeted manner via the outlet openings in the water collection chamber.

A further advantage of the present invention lies in the fact that the tread area in the speed bump therefore does not have to have a constructive structure upwards in order to provide run-off slopes or undercuts. these elements are practically relocated to the inside of the tread area, which reduces the overall height considerably. The tread area can then also run in one plane with the upper edge of the floor on the outside.

In this way, an extremely low step-over height can be achieved via the door sill system according to the invention, which results in a high level of user comfort. In particular, this also makes it possible to achieve barrier-free, i.e. disabled access.

According to the invention, the sealing plane formed by the stop fold or stop and the tread area designed like a lattice with a water collection chamber for draining moisture advantageously work together in combination to achieve particularly good driving rain protection with a low installation height.

Overall, the sealing sheet achieves a particularly reliable sealing of the ground threshold, so that the ingress of moisture can be avoided in a particularly reliable manner. The fastening of the sealing sheet to the tread area and/or to the base body of the threshold also makes it possible to position the sealing sheet in a particularly reliable and suitable manner over the long term. The sealing effect remains undiminished by the bonding and the installation of the sealing membrane can be carried out with simple and proven means.

Advantageous developments of the door sill system according to the invention are the subject matter of the dependent claims.

The revolving door leaf can have two stop folds, which create two sealing levels with stops on the base body. In practice it has been shown that a particularly good protection against driving rain can be achieved in this way. In addition, heat losses through the front door arrangement can also be significantly reduced.

These effects come into play even better if a seal is arranged on the at least one stop fold. In this way, a particularly reliable building seal can be achieved at this point.

Furthermore, the tread area can have several water collection chambers, which are connected to one another via the outlet openings. The length of the stepping area can thus be adapted to local conditions. In particular, it is possible to provide particularly absorbent tread areas and water collection chambers when an increased amount of driving rain is to be expected. This is the case, for example, with door arrangements that are particularly at the mercy of the effects of the weather.

It has proven itself in practice when the outlet openings are designed as boreholes. Reliable water drainage can then be achieved with simple means.

Alternatively, the outlet openings can also be formed by a slit through the water collection chambers. The production of the outlet openings is then significantly simplified, since such a slot can be made in one go on the underside of the tread area. In addition, a complete dewatering of the water collection chambers can be achieved in this way, while boreholes generally leave edges in the water collection chambers for production reasons, at which a certain amount of water can remain.

Furthermore, it is advantageous if the stepping surface of the stepping area is aligned essentially horizontally. In this way, its overall height can be kept particularly low. Then the comfort of use for the door sill system according to the invention increases further.

If the tread area is formed from a metal profile, it has particularly good robustness and durability.

In particular in the case of doors with several revolving door leaves, it is advantageous if a closing part is also arranged on the base body. Then a reliable locking of the door leaf is possible. Currently, however, the overall height of the base body can be kept low in the area of the threshold.

Fig. 1

einen Schnitt durch den Bereich einer Bodenschwelle an einem erfindungsgemäßen Türschwellensystem gemäß einer ersten Ausführungsform; die

Fig. 2 bis 4

Schnitte durch abgewandelte Ausführungsformen des erfindungsgemäßen Türschwellensystems, welche insbesondere bei der Altbausanierung Anwendung finden können;

Fig. 5 und 6

Beispiele von Türschwellensystem die nicht Teil der Erfindung sind.

Fig. 7

eine perspektivische Ansicht einer erfindungsgemäßen Bodenschwelle in einer weiteren Ausführungsform; und

Fig. 8

eine perspektivische Unteransicht eines erfindungsgemäßen Trittbereichs in einer weiteren Ausführungsform.

The door sill system according to the invention is explained in more detail below in exemplary embodiments with reference to the figures of the drawing. It shows:

1

a section through the area of a ground sill on a door sill system according to the invention according to a first embodiment; the

Figures 2 to 4

Sections through modified embodiments of the door sill system according to the invention, which can be used in particular in the renovation of old buildings;

Figures 5 and 6

Examples of threshold systems not forming part of the invention.

7

a perspective view of a threshold according to the invention in a further embodiment; and

8

a perspective bottom view of a tread area according to the invention in a further embodiment.

According to the illustration in 1 a door sill system 1 has a door frame with a ground sill 2 and a revolving door leaf 3 . Only this lower section of the door, which is particularly important for the tightness against driving rain, is shown in the figures.

The revolving door leaf 3 is designed in a conventional manner as a wood-aluminum composite profile. A rotary connector 33 is used as a connecting element between a leaf frame wood 31 and an aluminum panel 32. The leaf frame also has two stop rabbets 34 and 35, which each receive seals 36 and 37 and represent sealing planes for the door arrangement.

In this exemplary embodiment, the ground sill 2 is designed in two parts, consisting of a base body 21 and a tread area 22 . The base body 21 consists of a wood fiber reinforced plastic (WPC). It also has stops 21a and 21b which interact with the seals 36 and 37 to produce the two sealing planes.

The tread area 22 is formed from an aluminum profile and has a lattice-like shape. It is fixed to the base body 21 by screwing. The stepping area 22 includes a stepping surface 22a below which are water collection chambers 22b. The tread surface 22a is interrupted by entry openings 22c for moisture etc. The individual water collection chambers 22b each have outlet openings 22d, via which moisture is discharged to the outside. A bottom 22e of the tread area 22 is designed to be inclined outwards for this purpose. The stepping surface 22a, on the other hand, is aligned essentially horizontally. It is ultimately formed by the L-shaped webs which delimit the water collection chambers 22b.

Any floor area is connected to the door threshold system 1 on the outside; in the exemplary embodiment shown, this is an elevated terrace floor T made of wood. The upper edge of the terrace floor T is flush with the tread surface 22a.

On the inside of the room, a floor F connects to the threshold 2, which must be lower due to the system. In the example shown, its upper edge is lower by a dimension X than the level of the step surface 22a or the upper edge of the patio floor T. The dimension X represents the step-over height of the door threshold system 1 and is 20 mm here. The door sill system 1 is therefore designed to be disabled-friendly.

If there is a risk of moisture getting into the interior through the door sill system 1, be it due to driving rain and/or wind load etc., it is reliably caught in the water collection chambers 22b of the tread area 22 and from there drained back to the outside.

How out 1 can also be seen that the tread area 22 is also coupled on its underside with a sealing sheet 26, which is made of an elastic, reliably sealing material such as plastic. In the exemplary embodiment shown, one end of the sealing sheet 26 engages in a form-fitting manner in a groove of the tread area 22 and is thus reliably held there. It then runs down the base body 21 to the bottom area, where it is deflected outwards and also covers this in a sealing manner. In the example shown, the sealing membrane 26 then interacts with a patio seal to which it is connected in a watertight manner (not shown). The water discharged to the outside from the water collection chambers 22b is thus reliably kept away from the base body 21 .

In the Figures 2 to 6 Modified embodiments of the door sill system 1 are shown. These relate in particular to old building renovation profiles in which existing systems are adapted in a manner according to the invention. The revolving door leaf 3 is identical to that according to FIG 1 . It is therefore generally no longer explained separately. Reference is made to the above statements in this regard. The difference between these statements and the first embodiment according to 1 lies in the structure of the threshold.

So the embodiment differs according to 2 from that in 1 characterized in that a base body 21 'of a threshold 2 is formed in two parts. A base area 21c of the base body 21' comes from the existing structure and is reused during the renovation. An attachment 21d extends over this, which is attached to it in the course of the renovation and interacts with the revolving door leaf 3 in the manner already explained. The tread area 22 is also identical to that in 1 executed.

The embodiment according to 2 shows that the door sill system 1 can also be used without further ado in the renovation of old buildings.

The variant according to 3 differs from that in 2 by the shape of a stepping area 22'. Instead of L-shaped webs, I-shaped webs without a transverse leg at the free end are now provided here in order to form the water-collecting chambers 22b'. The advantages according to the invention can also be achieved with this variant.

4 shows a modification of the embodiment according to FIG 2 to the effect that a closing part 23 is additionally present on an attachment 21d' of the base body 21'. This is pushed from the inside of the room onto a base 24 on the attachment 21d'. The base 24 is screwed to the base body 21'. Such a closing part 23 is used when the door has a plurality of revolving door leaves 3 which, for example, still require anchoring on the floor in the central area of the door opening. The closing part 23 is designed as an aluminum profile.

The variant not claimed according to figure 5 based on that of 4 with the closing part 23 and applies them together with the tread area 22 'of 3 at. Such a combination can also be used without further ado.

6 finally shows another embodiment that is not claimed, in which a tread area 22" is modified in such a way that it is held in grooves in a base area 21c" of a base body 21" by spring projections 22f. In terms of its mode of operation, the tread area 22" is equivalent to that in 3 . Furthermore, the tread area 22" has a receiving groove for a sealing element 25 in the area facing the seal 36 of the revolving door leaf 3. This interacts directly with the seal 36 to produce a sealing plane. An attachment 21d" of the base body 21" is correspondingly opposite to that of previous embodiments modified.

7 shows a perspective view of a further embodiment of the door sill system 1 according to the invention. This differs from the previous embodiments in the structure of the ground sill 2.

In contrast to the in 4 In the variant shown, an attachment 21d‴ of a base body 21‴ is designed as a metal profile element and also carries a base 27 for a modified tread area 22'".

A sealing sheet 26' is attached to a web 27a of the base 27 by gluing. As in the other embodiments, the sealing sheet 26' runs vertically downwards along the base body 21'' before it is deflected outwards in the bottom area. The sealing sheet 26' can also be attached at suitable points on the base body 21‴ and in the bottom area by gluing, In this case, the sealing web 26' is connected to other sealing webs in order to produce a reliable seal against moisture on the floor side as well as in the upright area on the door jambs etc.

In 8 is the tread area 22‴ off 7 shown in more detail. A perspective view from below is shown, from which it can be seen that water collection chambers 22b'' have outlet openings 22d', which are produced by forming a slit transversely to the water collection chambers 22b''. Reliable and complete dewatering of the water collection chambers 22b" can thus be achieved.

In addition to the explained embodiments, the invention permits further design approaches.

The grid-like tread area 22 etc. can also be designed in such a way that it only has a single water-collecting chamber. On the other hand, the number of water collection chambers can be adjusted according to local conditions and also deviate from the three to five shown.

Furthermore, it is not absolutely necessary for the stepping surface 22a of the stepping area 22 to be aligned essentially horizontally. This can also be inclined in certain applications, for example, without the functionality of the door sill system 1 being adversely affected. The performance area would be preferred 22a should then be provided ascending towards the inside of the door, which would also slow down swelling water etc. even better.

It is not necessary for the tread area 22 etc. to be made of a metal profile, in particular one with an aluminum profile. Instead, it can also be made of a plastic or a wood-fibre-reinforced plastic.

In an embodiment not claimed, it is possible to integrally form the step portion 22 etc. with the base 27 or the main body 21 etc.

The base body 21 etc. can consist of different materials. In addition to a wood fiber reinforced plastic (WPC), wood, plastic, metal or a combination of these materials can also be used. If the base body is made of plastic or metal, it is typically in the form of a hollow profile body.

The fastening of the tread area 22 etc. and, if necessary, the closing part 23 with the base 24 on the base body 21 is typically done by screws. However, it is also possible for snap-in connections, clip closures, adhesive connections or the like to be used instead.

The closing part 23 does not have to be pushed onto the base 24 from the side; fixing from above by a locking mechanism or the like could also be used here.

Claims (11)

1. Door threshold system (1) for a front door, a tilt and turn door or the like, with a door frame with a sill (2) and at least one revolving door leaf (3),

   wherein the sill (2) comprises a base body (21; 21'; 21"; 21" '),

   wherein the revolving door leaf (3) has at least one stop fold (34, 35) that interacts with at least one stop (21 a, 21 b) on the base body (21; 21'; 21"; 21‴). and creates a sealing plane,

   wherein the base body (21; 21'; 21'; 21‴) has a tread area (22; 22'; 22"; 22‴) that provides a tread surface (22a) and serves for water drainage to the outside, wherein the tread area (22; 22'; 22"; 22‴) is designed in the manner of a grid and has at least one water collection chamber (22b, 22b'; 22b") with a drainage slope in the floor area, and

   wherein moisture enters through an inlet opening (22c) into the at least one water-collection chamber (22b; 22b'; 22b") and exits via outlet openings (22d; 22d') to the outside,

   characterised by

   a drainage slope in the floor area of the water collection chamber (22b, 22b'; 22b")
   and by

   a bar (27a) that opposite the tread area (22; 22'; 22"; 22"') extends perpendicularly to it from the drainage slope, is designed on the base body side to the system on the base body (21; 21'; 21'; 21‴) and extends along a vertical side of the base body (21; 21'; 21'; 21‴) and towards an outer side and forms a contact surface for a sealing sheet (26; 26'),

   wherein the bar (27a) is part of a base for a modified designed tread area (22") that is designed from a metal profile element and is carried on the attachment (21d‴) mounted on the base body (21") or is part of the tread area (22; 22'; 22") manufactured as an aluminium profile and screwed to the base body (21; 21'; 21").
2. Door threshold system according to claim 1, characterised in that the revolving door leaf (3) has two stop folds (34, 35) which, with stops (21a, 21b) on the base body (21; 21'; 21"; 21‴), form two sealing planes.
3. Door threshold system according to claim 1 or 2, characterised in that a seal (36, 37) is arranged on the at least one stop fold (34, 35).
4. Door threshold system according to one of claims 1 to 3, characterised in that it also has a sealing sheet (26; 26') that seals the base body (21; 21'; 21"; 21‴) from the outside and on the tread area (22; 22'; 22"; 22‴) and/or on the base body (21; 21'; 21"; 21‴) of the threshold (2).
5. Door threshold system according to claim 4, characterised in that the sealing strip (26; 26') is bonded to the tread area (22; 22'; 22"; 22‴) and/or is fixed to the base body (21; 21'; 21"; 21‴).
6. Door threshold system according to one of claims 1 to 5, characterised in that the tread area (22; 22'; 22"; 22‴) has a plurality of water-collection chambers (22b; 22b'; 22b") that are connected to each other through the outlet openings (22d; 22d')
7. Door threshold system according to claim 6, characterised in that the outlet openings (22d) are designed as drilled holes.
8. Door threshold system according to claim 6, characterised in that the outlet openings (22d') are formed by a slot through the water-collection chambers (22b").
9. Door threshold system according to one of claims 1 to 8, characterised in that the stepping surface (22a) of the tread area (22; 22'; 22"; 22"') is aligned essentially horizontally.
10. Door threshold system according to one of claims 1 to 9, characterised in that the tread area (22; 22'; 22"; 22‴) is formed from a metal profile.
11. Door threshold system according to one of claims 1 to 10, characterised in that a closing part (23) is also arranged on the base body (21'; 21").

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