EP1174579B1 - Sealing device for a door without a threshold - Google Patents

Abstract

A seal for a door, comprises a guide rail (1) located in a groove in the bottom of the door, and a holding profile (2) held in the rail via an elastic sealing member (7), between upper and lower positions. Each side shank (8,9) of the elastic sealing member presses against the free ends of the adjacent profiled shanks (3,4), and partially covers them. A number of projections (13) rest against the side walls.

Description

The invention relates to a sealing arrangement for a threshold-free door, with a a receiving groove in the lower edge of a door leaf insertable with a guide rail on a retaining profile in this attached sealing body, which is between one in the Guide rail retracted, upper and one protruding from this, extended, lower position is displaceable and one in the latter against a floor or a door frame Pressable, lying below the holding profile sealing section, which is on both sides of the Holding profile with this laterally comprehensive, protruding into the interior of the guide rails Side legs is provided, each of which is on the associated side wall of the Slidably supports the guide rail and each one also in the interior of the Guide rail extending lateral profile leg of the holding profile lies.

In the case of such sealing arrangements, which help to seal the gap below the door leaf serve a threshold-free door, which is on a holding profile within the guide rail attached sealing body in the last section of the door closing process by a likewise lowered operating mechanism mounted within the guide rail and thereby the Sealing section of the sealing body pressed against the floor or the door frame.

In a known floor seal assembly (DE 32 37 524 A1) there are Guide rail as well as the holding profile for the sealing arrangement each from one down (i.e. towards the floor to be sealed) open U-profile. The seal arrangement is on Holding profile held centrally and has a cross-sectionally shaped sealing section on, which protrudes slightly beyond the open end of the holding profile, so that it when lowering the Holding profile can be pressed against the floor. Between the support profile and the Guide bar is a U-shaped plastic profile bar attached, which is also used for floor to be sealed open and with its central web on top of the central web of the holding profile is attached so that its side legs between the side legs of the holding profile and the Side walls of the guide rail extend and are so spread outwards that they are in the Area of their free ends on the facing inside of the guide rail slide.

This known sealing arrangement is relatively complex to assemble and is also with regard to Noise reduction not very effective.

A sealing arrangement of the type mentioned at the outset is described in EP 0 338 974 B1. at this sealing arrangement, the holding profile has a U-shaped inside the U-shaped guide rail Section, but its opening against the orientation of the U The guide rail is open into the interior of the guide rail. The well-known Sealing arrangement consists essentially of one in the direction of the one to be sealed Opposite surface bulging elastic sealing strip, each on one side in one side leg extending into the interior of the guide rail. Laterally below and on both sides of the U-shaped section of the holding profile, the sealing strip is by means of Protrusions are held in a form-fitting manner in correspondingly provided holding recesses, wherein the side legs from this attachment point at an angle towards the assigned Side wall of the guide rail run out and sliding with its free end on this issue. The structure of this known seal arrangement is simpler than in the next Prior art cited above. However, since the side legs of the sealing body have a relatively large contact area at its free end against the side wall of the guide rail apply, there are comparatively large frictional forces with a relative displacement, what in the course of time to a noticeable abrasion and thus also a decrease in the Sealing effect against the outside of the sealing arrangement leads and at the expense of it Lifetime goes. In addition, this known sealing arrangement is also in terms of its Noise insulation properties (in the sealing state) are not particularly favorable.

Proceeding from this, the invention has for its object a sealing arrangement type mentioned at the outset so that in the sealing position (extended state of the sealing body) the sound insulation is improved.

According to the invention, this is the case with a sealing arrangement of the type mentioned at the outset achieved that each side leg of the elastic sealing body with its free end region against the end face of the free end of the profile leg of the holding profile arranged next to it bears under pressure, this end surface at least partially covered laterally and on its side facing the corresponding side wall of the guide rail several in Direction of displacement of the sealing body offset parallel to each other, essentially over its entire length extending elastic projections are provided to the sliding system serve the side wall of the guide rail, being in the extended position of the Sealing body still at least two of these projections of each side leg in contact stand with the side wall of the guide rail.

In the sealing arrangement according to the invention, the multiple arrangement of the lateral Sliding projections achieved that at least even in the extended state of the seal two, but preferably several of these projections are still in contact with the system facing side surface of the guide rail. Because the projections in the direction of displacement are offset from one another and each over the entire length of the relevant Side legs of the seal body will run between them, also in this one extended state of the sealing body, over the entire length of the guide rail away from each other by the projections, each self-contained spaces created, which creates effective sound insulation from the outside of the door through the Interior of the guide rail is reached through. At the same time, the relatively small Contact surfaces that are in the installation of such projections against the inside of the Guide rail result, with a relative movement, only relatively small frictional forces generated with the consequence of a comparatively lower abrasion and a consequent longer period of use until the time when the properties of the arrangement change deteriorate.

The fact that the free ends of the side legs of the sealing body, unlike the generic seal arrangement, not against the inside of the side walls of the Guide rail but rest away from this against the end face of the free ends of the lateral profile leg of the holding profile, and this also at least partially laterally cover, a tight fit not only of the sealing body on the holding profile, but in particular also the side legs of the sealing body on the profile legs of the holding profile can be achieved. This is also important with regard to the good alignment of the side Projections for the most uniform possible placement of the same on the side wall of the Guide rail, so that there is also an essentially even contact with the system and therefore also comparable investment conditions at the investment sites between the individual thickenings and the counter wall can be created.

The shape as well as the number of protrusions on the side legs of the elastic Sealing body can be set in a suitable manner, including for a specific one Design case special configurations can be made. However, it has proven to be proven particularly advantageous if the projections in cross section in the form of curved knobs, in particular are semicircularly curved.

Four projections are preferred on each side leg of the elastic sealing body attached, which leads to a completely satisfactory function in most applications. If however, longer distances are required to reach the extended position of the sealing body should be, it is also easily possible to have a larger number of protrusions on both Attach side legs of the elastic sealing body.

A very particularly preferred embodiment of the sealing arrangement according to the invention is that each side leg on its the inner wall of the guide rail facing side is provided with a support layer on which the projections (in one piece) are formed and which consists of a material with particularly favorable friction properties, with, particularly preferably, this material of the support layer and the projections being a larger one Has hardness than that of the elastic sealing body. So it is possible that by appropriate Choice of material for the overlay and the protrusions specifically those that occur Friction can be taken into account, while regardless of the material of the Sealing body whose sealing function can be optimally adapted in the extended state can. Choosing the material of the overlay and the protrusions with a greater hardness than that of the elastic sealing body, so this can be particularly favorable Frictional conditions when a relative movement occurs, in particular also lower frictional forces between the projections and the adjacent mating surface of the side leg of the Guide rail, achieve what lower forces for performing the extension movement and Retracting movement of the holding profile (with the sealing body fastened therein) leads, which also causes the Design of the actuation mechanism for extending and retracting the sealing body is favored, which is then somewhat weaker due to the lower friction forces can be designed or instead has an increased lifespan.

When executing the sealing arrangement according to the invention with a lateral support layer on the side legs of the sealing body, on which the projections are formed, it is complete Particularly advantageous if doing so on each profile leg of the holding profile assigned side leg of the sealing body facing side of the position of the projections correspondingly arranged depressions are formed. This makes it possible for the section of the overlay layer arranged above such a depression with the one present there Elastic projection give something in the direction of the recess or "deflect" what can has a favorable effect with regard to the friction conditions that occur.

In the sealing arrangement according to the invention, the sealing section of the Sealing body formed in the form of a hollow cross section, which on its the holding profile facing side abuts against this and there is a centrally located, towards the Retaining profile projecting support foot (which is made of the same elastic material as the Sealing body) has, which in an assigned central receiving opening of the Holding profile engages and is positively held there.

The sealing section is preferably on its side facing away from the holding profile in the form of an formed essentially circular arc-shaped sealing web which at Press against the counter surface to be sealed (floor or door frame) against it Bulging can easily compress.

Advantageously, in the sealing arrangement according to the invention, the free end of each Side leg of the sealing body designed so that it over the end face of the free end of the profile leg of the holding profile extending next to it also protrudes. It will possible that with a suitable dimensioning of the guide rail and the other elements the sealing arrangement according to the invention when fully retracted, the free end of each Side legs between the end face of each profile leg and the central portion of the Guide rail can be slightly squeezed, which in the retracted state of the Sealing body due to the crushing that otherwise occurs in such Seal arrangements existing rattling noises in the interior of the Guide rail can be avoided completely.

The guide rail can be designed in any suitable shape, but has a very special feature preferably has a U-shaped cross-section, which in the direction of the floor to be sealed, Frame or the like is open.

The holding profile also preferably forms on its upper part which surrounds the profile leg Section of a U-shaped cross section, which, opposite to the opening direction of the U cross section the guide rail, is open into the interior of the guide rail. This can be very simple geometric relationships with excellent effectiveness and easy assembly of the Achieve overall arrangement.

A particularly preferred embodiment of the sealing body according to the invention also exists in that the end face of each profile leg of the holding profile of which the side wall of the assigned guide rail towards the outside obliquely towards the other profile leg, i.e. into the interior of the space spanned by the guide rail there, runs.

Fig. 1 einen Querschnitt durch eine erfindungsgemäße Dichtungsanordnung für eine schwellenloses Türe gemäß einem ersten Ausführungsbeispiel in eingefahrener Stellung;

Fig. 2 die Dichtungsanordnung aus Fig. 1, jedoch in ausgefahrener Stellung;

Fig. 3 einen Querschnitt durch eine zweite Ausführungsform einer erfindungsgemäßen Dichtungsanordnung (in einer zu Fig. 1 vergleichbaren Stellung), und

Fig. 4 einen Querschnitt durch eine weitere, dritte Ausführungsform einer erfindungsgemäßen Dichtungsanordnung in einer zur Fig. 1 ähnlichen Stellung.

The invention is explained in more detail below in principle by way of example with reference to the drawing. Show it:

1 shows a cross section through a sealing arrangement according to the invention for a thresholdless door according to a first embodiment in the retracted position.

FIG. 2 shows the sealing arrangement from FIG. 1, but in the extended position;

3 shows a cross section through a second embodiment of a sealing arrangement according to the invention (in a position comparable to FIG. 1), and

Fig. 4 shows a cross section through a further, third embodiment of a sealing arrangement according to the invention in a position similar to Fig. 1.

1 and 2, a sealing arrangement for a thresholdless door is shown (in cross section), 1 shows the retracted state and FIG. 2 the extended sealing state.

The sealing arrangement consists of a cross-sectionally U-shaped guide rail 1 in shape of an aluminum extruded profile, but it is also readily as a corresponding bent sheet metal part or can be made in any other suitable form.

Within the guide rail 1 is a support profile 2, also in the form of an aluminum extruded profile, arranged, which in its upper, d. H. the opening of the U-profile Section facing away from the guide rail 1, however, into the interior of the guide rail 1 has open U-shaped training. This consists of two side profile legs 3 and 4, the their feet are connected to each other via a transverse connecting web 5. As the 1 and 2 clearly show, the lateral profile legs 3, 4 run in their Extension still beyond the junction of the connecting web 5 and form below the same (i.e. on its side facing away from the inside of the guide rail 1), that is to say in 1 and 2 bottom side, a profile section, which for receiving and anchoring Holding foot 6 is used, which in turn on a sealing body 7 made of elastic, for. B. thermoplastic, material is attached. The holding foot 6 can be made in one piece with the Seal body, so be made with the same material as this. In which Embodiment in the figures, however, it consists of a different material than that Sealing body 7, which is used for good anchoring within the holding section of the support profile 2 is particularly suitable.

The sealing body 7 has on both sides in cross section side legs 8 and 9, the one of Hollow profile formed sealing section 10 in the formed by the guide rail 1 Protrude inside.

These side legs 8 and 9 run in the space between the side Profile legs 3 and 4 of the holding profile 2 and the inner walls of the side legs of the U-shaped Guide rail 1 are formed.

Each side leg 8, 9 is on its associated side wall 11 of the guide rail 1 facing side with a support layer 12, which is made of a harder elastic Material as the sealing body 7 and with the side wall 11 of the guide rail 1 out bulging projections or knobs 13 is provided. In those shown in Figures 1 to 4 Sealing arrangements are attached to each side leg 8 or 9 four projections 13, which over the entire longitudinal extent of the side legs 8 and 9 (perpendicular to Drawing plane of Figures 1 and 2) run and are arranged parallel to each other, wherein they in Direction of movement of the sealing body 7 in and out relative to the profile rail 1 are attached offset to each other. The distances between two neighboring ones Projections 13 on each leg 8 or 9 can each be the same size or different be selected, but the distances and the number of projections 13 are provided such that in the extended position of sealing body 7 and holding profile 3 shown in cross section in FIG. 2 at least two (in the embodiment shown: even three) projections 13 on each Side legs 8, 9 still remain in contact with the side wall 11 of the guide rail 1 (see illustration of FIG. 2).

The design of the cross-sectional shape of the sliding knobs 13 is preferably chosen to be semicircular, as is the case with the embodiment shown. However, it could be another Cross-sectional shape for the projections 13 are used, in particular in cross-section recommend rounded protrusions.

The lateral profile legs 3 and 4 of the holding profile 2 are inclined at their free ends extending end surfaces 14 and 15 provided obliquely in the illustration of FIGS. 1 and 2 at the top (in the direction of the opposite profile leg 4 or 3, i.e. each rise away from the associated side wall 11 of the guide rail 1).

The side legs 8 and 9 of the elastic sealing body 7 are with their end regions 15 and 16 in the direction of the associated inclined end surface 14 or 15 of the adjacent profile leg 3 or 4 angled towards each and rest against this under elastic compressive prestress. there These end regions 15, 16 completely cover the relevant end surface 14, 15, as shown in FIG. 1 and 2 is shown.

As the illustration in FIGS. 1 and 2 shows, the support layer 12 also extends on each Side legs 8, 9 up to its free end, so that they also have the angled end region 14 or 15 covered on the outside.

As shown in FIGS. 1 and 2, the sealing section 10 of the hollow cross section Sealing body 7, each seen in cross section, one against the facing end face of the Holding profile 2 adjacent upper crosspiece 17, from its two lateral ends approximately short web sections 18, 19 run at right angles to it, which at their distal ends into one pre-arched sealing web 20, whose curvature essentially in cross section 1 and 2 show a circular section.

On this sealing web 20 are two on its two side areas in the direction of the on the corresponding side projecting short sealing tongues 21, 22 attached.

In the extended state (see FIG. 2), the sealing web 20 with the two sealing tongues 21 and 22 lies on the counter surface 23 to be sealed, for example on a floor or around the door in question frames running around, sealing under pressure.

In the central region of the crossbar 17, the holding foot 6 is attached to this, which in a corresponding central opening protrudes on the facing side of the holding profile 2 and with two anchoring sections 24 projecting laterally at its projecting end, 25, which are only shown schematically in FIGS. 1 and 2, a suitable form-fitting Anchoring, possibly with elastic bending of the holding sections 24 and 25, in the Recording space of the holding profile 2 ensures.

This anchoring by means of the holding foot 5 on the one hand and the pressure system of the end regions 15, 16 the side legs 8 and 9 against the inclined end faces 14 of the side profile legs 3 and 4 on the other hand, a firm gripping of the holding profile 2 by the sealing body 7 ensures. As a result of the pressure system of the inclined end regions 15, 16 against the inclined end surfaces 14 also achieved that with a relative movement of the sealing body 7 and the holding profile 2 Guide rail 1 only at the contact points of the thickened portions 13 against the corresponding one Side wall 11 frictional forces occur and only at these points during the relative movement Support of the overall arrangement running inside the guide rail 1 to the Side walls 11 takes place.

1 and 4 show cross sections through two further configurations of such a sealing arrangement, each in a position corresponding to the illustration in FIG. 1 .

The configuration of the arrangement from FIG. 3 differs from that according to FIGS. 1 and 2 in essentially in that there the free end regions 15, 16 clearly above the assigned End faces 14 and 14 ', that is, the profile legs 3, 4 protrude upwards. With one Design of the sealing body 7, it is advantageous if the end position of the retracted Location of the overall arrangement a little more in the direction of the upper end surface 26 of the Guide rail 1 back, as shown in Fig. 3, is so that the free ends of the End sections 15, 16 against the upper inner surface 26 of the guide rail 1 under lighter Compressive preload come to the system. This can result in such a fully retracted Seal arrangement can be ensured that there is no rattling noises at a Swiveling of the door wing (not shown) comes. This is a very important point of view since such sealing arrangements for thresholdless doors in connection with the (not in all figures Actuating mechanism for the holding profile 2 tend to rattle.

In the further exemplary embodiment of such a sealing arrangement shown in FIG its position essentially corresponds to that of the exemplary embodiment from FIGS. 1 and 3 the two lateral profile legs 3 and 4 of the holding profile 2 on their respective Side legs 8 or 9 facing side small, offset recesses 27th attached, in each case in such positions that correspond to the positions of the projections 13, so that a certain resilient yielding of the elastic side legs 8 and 9 with their Support layer 12 and the projections 13 attached there under the application pressure against the side surface 11 of the guide rail 1 into the associated recess 27 is possible. Also each recess 27 extends, like the associated projections 13, each over the entire Length of the relevant side leg 8 or 9 away.

4, the shape of the holding foot 6 and (correspondingly) that of corresponding recess on the support profile 2 slightly different than in the embodiments of Fig. 1 and Fig. 3 formed. In this respect, reference is made to the representation from the drawing in FIG. 4 clearly visible special design of these elements is expressly referred to.

If in one of the sealing arrangements shown the knob-shaped projections 13 z. B. made of PTFE are trained, optimally low frictional forces when retracting and extending the Sealing arrangement and at the same time achieve a particularly low abrasion during the rubbing process. Therefore one can z. B. produce the support layer 12 with the knobs 13 altogether from PTFE or, if another material is to be used, you can use a thin one Manufacture the top surface layer from PTFE (e.g. in the form of applied foils or the like) so that the advantage mentioned can be achieved in any case.

Claims (11)

1. Sealing arrangement for a door without a threshold, with a guide rail (1), which can be inserted in a locating groove in the bottom edge of a door leaf, and with an elastic sealing body (7), which is fastened to a holding profile (2) in this rail, can be displaced between a top position of entry into the guide rail (1) and an extended bottom position projecting from this rail and comprises a sealing portion (10), which can be pressed in the latter position against a floor (23) or a door frame, lies below the holding profile (2) and is provided on both sides of the holding profile (2) with side legs (8, 9), which laterally embrace this profile, project into the interior of the guide rail (1) and each of which is supported in sliding fashion at the associated side wall (11) of the guide rail (1) and in each case lies next to a lateral profile leg (3, 4), likewise extending into the interior of the guide rail (1), of the holding profile (2), characterised in that each side leg (8, 9) of the elastic sealing body (7) lies with its free end region against the end face (14; 14') of the free end of the profile leg (3, 4), which extends next to it, of the holding profile (2) under a compressive bias, covering this laterally at least in part, and a plurality of projections (13), which are staggered parallel to one another in the direction of displacement of the sealing body (7) and extend substantially over its entire extent, are provided at the side of the side leg which faces the associated side wall (11) of the guide rail (1) for sliding abutment at the side wall (11) of the guide rail (1), wherein at least two of these projections (13) are still in bearing contact with the side wall (11) of the guide rail (1) in the extended position of the sealing body (7) at each side leg (8, 9):
2. Sealing arrangement according to Claim 1, characterised in that four projections (13) are located at each side leg (8, 9) of the elastic sealing body (7).
3. Sealing arrangement according to Claim 1 or 2, characterised in that each side leg (8, 9) is provided on its side which faces the side wall (11) of the guide rail (1) with a support layer (12), at which the projections (13) are also formed and which consists of a material with favourable friction properties, preferably of PTFE.
4. Sealing arrangement according to Claim 3, characterised in that recesses (27), which correspond to the position of the projections (13), are provided at each profile leg (3, 4) of the holding profile (2) on the side of the latter which faces the associated side leg (8, 9) of the sealing body (7).
5. Sealing arrangement according to Claim 3 or 4, characterised in that the material of the support layer (12) and of the projections (13) is of a greater Shore hardness than the elastic sealing body (7).
6. Sealing arrangement according to any one of Claims 1 to 5, characterised in that the sealing portion (10) of the sealing body (7) has a hollow cross section, which lies against the holding profile (2) on its side which faces the latter and comprises a centrally arranged, projecting holding foot (6), which is positively secured in an associated central locating opening in the holding profile (2).
7. Sealing arrangement according to Claim 6, characterised in that the sealing portion (10) extends in a curved manner substantially in the form of a circular arc on its side which is remote from the holding profile (7).
8. Sealing arrangement according to any one of Claims 1 to 7, characterised in that the free end of each side leg (8, 9) of the sealing body (7) projects beyond the end face (14; 14') of the free end of the profile leg (3, 4), which extends next to it, of the holding profile.
9. Sealing arrangement according to any one of Claims 1 to 8, characterised in that the guide rail (1) has a U-shaped cross section.
10. Sealing arrangement according to Claim 9, characterised in that, at its top portion embracing the profile legs (3, 4), the holding profile (2) forms a U-shaped cross section which is open into the interior of the guide rail (1).
11. Sealing body according to any one of Claims 1 to 10, characterised in that the end face (14; 14') of each profile leg (3, 4) of the holding profile (2) extends from its outside which faces the side wall (11) of the guide rail (1) obliquely in the direction of the other profile leg (4, 3).

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