EP0786576A2 - Elastic sealing strip for windows, doors or the like - Google Patents

Abstract

The holding lips (4,5) of the sealing foot (3) are for fixture in a holding groove of a pane or panel rabbet. The sealing head (1) on its side opposite to the profile back (2) has a sealing rib (6) consisting of three individual sections (6.1,6.2,6.3). The sealing rib at its one end is connected with the one end of the profile back by an arched connecting rib (7) in the direction of the inner area of the hollow cross-section. At its other end, the sealing rib issues into a cross rib (8) which is connected by a support rib (9) with the profile back.

Description

The invention relates to an elastic strand seal for windows, doors or the like., With a hollow section formed as a head region, which has a profile back, which in turn with a sealing foot with retaining lips for anchoring in a retaining groove of a sash rebate or the like. is provided.

Such string seals (see e.g. DE-GM 85 02 634) are sufficient in many practical applications, but are no longer sufficient for increased demands on door or window seals, especially when it comes to compensating for larger tolerances.

Better results can be achieved here if the head area in the case of strand seals is designed as a closed hollow profile (such as DE-GM 84 18 539), because stronger restoring forces can be built up in the sealing area, particularly in the case of sealing engagement.

Further improved sealing effects can be achieved in the case of strand seals with a head region as a hollow cross-section if, on the side of the hollow cross-section facing away from the profile back, the sealing web provided there for sealing against the counter surface to be sealed consists of a plurality of web sections, this web section or at least several of these in succession with the sealing engagement the sealing surface to be sealed come into contact and thus form an improved sealing surface which is particularly suitable for compensating larger tolerances. Either individual ones are particularly preferred Strand sections are additionally supported by support webs in relation to the back of the profile or reach the supporting opposite system during sealing engagement (DE-GM 87 02 653).

However, the requirements in window and door construction are increasingly based not only on obtaining an excellent sealing effect, but in particular also on the seals used being able to bridge particularly large tolerances and, in addition, despite the closed hollow profile of the head region, over the largest possible initial area of the Have a "soft" closing behavior across sealing engagements, i.e. do not build up too strong counter-forces to increase the closing comfort.

In order to meet this requirement even better than known seals, the invention proposes an elastic strand seal for windows, doors or the like, which has a hollow section of a head region with a profile back, which in turn has a sealing foot with retaining lips for anchoring in a retaining groove a sash rebate or the like is provided, wherein the sealing head on its side opposite the profile back has a sealing web consisting of three individual sections, which is connected at one end to one end of the profile back via a bulging in the direction of the inner region of the hollow cross-section or there buckling connecting web and at his the other end opens into a crosspiece which is connected to the profile crosspiece via a support web which projects into it at a distance from the back of the profile and projects obliquely on the same side as the sealing web from the crosspiece, furthermore the individual sections of the sealing web are each pivotably connected to one another , viewed in cross section, run essentially straight and in the non-installed state of the strand seal, the central individual section to the individual section running from the crosspiece runs at an acute angle in one direction away from the profile back, while the individual section running from the connecting web extends to the central individual section inclined at an acute angle in the direction of the profile back, and wherein the individual section proceeding from the transverse web can be pivoted against the support web in the event of a sealing engagement until it abuts.

An elastic strand seal with the basic structure of the hollow cross-section used in the invention in the head area allows the acceptance of particularly large tolerances, since the sealing web, which lies opposite the profile back and forms the side of the hollow cross-section facing the sealing surface, due to the three individual sections forming it and their mutual Arrangement to each other covers a comparatively large initial width for the hollow cross section, within which a sealing engagement and thus the formation of a sealing effect is ensured. At the same time, however, the sealing profile according to the invention also offers a comparatively soft deflection behavior during sealing engagement, for which the special configuration and alignment of the three individual sections of the sealing web are responsible in particular. Due to the fact that the individual section starting from the transverse web can be put into place in the event of a sealing engagement after carrying out a corresponding pivoting against the assigned section of the supporting web, not only is a good support of the other two individual sections promoted and thus the establishment of a good sealing effect in the sealing surface, but also is prevented the support web could undesirably lower downwards in the event of a sealing engagement. The alignment of the individual sections of the sealing web in relation to one another in the unloaded state of the seal also ensures that, when there is a sealing engagement, the individual section starting from the connecting web collapses relative to the central individual section of the sealing web and only together when a relatively large relative pivoting of the former individual section to the central section is achieved can be pivoted relative to the third section running out of the crosspiece. In this way, a targeted and graded deformation of the individual sections of the sealing web can be produced in succession in a desired sequence, which allows a particularly good design with regard to achieving a good sealing engagement. Due to the pivotability of the individual web sections relative to one another, the build-up of undesirable constraints due to the occurrence of bending elements or the like is largely also within the sealing web. avoided. Overall, the strand seal according to the invention nevertheless offers a "soft" and comfortable indentation behavior for the user, which permits good closing of the corresponding windows or doors with an excellent sealing effect.

In the strand seal according to the invention, the sealing foot can be provided in the extension of the profile back or, for other applications, also approximately in the middle of the profile back and running essentially vertically from it.

If the sealing foot is provided as an extension of the back of the profile, a further second support web, which is positioned obliquely towards the lower end of the sealing foot and which opens into the cross web approximately at the point at which the support web also runs out of the cross web, is preferably attached in the region of the sealing foot. wherein the support web with the profile back and the second support web forms a triangular arrangement. This results in a particularly firm and rigid design of the sealing base, including a rigid support for the support web, which, when full sealing engagement is achieved, also brings about a particularly good support action of the support web against the individual section of the sealing web that is in contact with it during sealing engagement.

A particularly preferred embodiment of the strand seal according to the invention consists in the fact that the support web on its web section adjacent to the cross web has a bulge that bulges out towards the interior of the hollow cross section of the sealing head, against which the facing side of the individual section of the sealing web connected to the cross web can be applied when swiveling in with sealing engagement . In the same way, such a thickening bulging into the interior of the hollow cross section could additionally be provided on the inside of this individual section (or only on this). This effectively prevents undesired folding up or setting up of the crossbar in the event of a sealing engagement.

Another preferred embodiment of the elastic strand seal also consists in the fact that from the end of the profile back from which the connecting web runs, at a distance which is greater than the maximum bulge of the connecting web in the event of a sealing engagement, on the inside of the hollow cross section of the head region Profile back a projecting shape is attached to which the central individual section of the sealing web is not yet in contact with sealing engagement when the individual section of the sealing web connected to the crossbar comes to rest against the thickening of the support web, but with a further narrowing of the Sealing gap, the central individual section of the sealing web can also be supported with respect to the profile back, and then the build-up of a high resistance to further narrowing of the sealing gap occurs.

The individual sections of the sealing web are preferably connected to one another or to the respectively associated connecting or transverse web via an articulation point, which are advantageously connected in the form of a depression or keyway that weakens the web cross section.

In order to be able to ensure the production of all-round and closed window frames by welding in the corner areas and there a good attachment of the individual sections to each other, it is also advisable with an extruded seal according to the invention at the upper end of the profile back in the area of the junction of the connecting web, an area made of harder Form material as the material of the remaining sealing profile.

Another preferred development of the strand seal according to the invention also consists in the fact that the central individual section of the sealing web runs into the individual section running from the connecting web on its underside facing the profile back, this individual section extending beyond the connection point with the central individual section and the projecting end section, which is in the form of an obliquely projecting sealing lip (in the non-installed state of the seal), in the case of sealing engagement and alignment of the two individual sections with respect to one another in a depression provided on the corresponding outer side of the central web section, such that in the aligned state the The outer sides of both individual sections lying away from the hollow cross section lie essentially in one plane, which makes it possible to form a particularly large sealing surface.

The length of the central individual section of the sealing web is preferably selected to be greater than the length of each of the other two individual sections, again, preferably, the central individual section being approximately twice as long as the length of each of the other two individual sections which are substantially equal to one another. It has shown that with such a geometry particularly favorable conditions are created in the case of sealing engagement.

It is furthermore advantageous if the crossbar forms a web section which projects beyond the connection point with the one individual section and is directed away from the profile back.

• Fig. 1 einen (vergrößerten) Querschnitt durch ein erfindungsgemäßes Strangdichtungsprofil;
• Fig. 2 und 3 zwei andere Ausführungsformen eines erfindungsgemäßen Strangdichtungsprofiles;
• die Fig. 4, 5 und 6 drei weitere Ausführungsvarianten für ein erfindungsgemäßes Strangdichtungsprofil als Türdichtung mit am Profilrücken mittig angebrachtem Fußbereich, und
• die Fig. 7, 8, 9 und 10 das Dichtungsprofil aus Fig. 1 im eingebauten Zustand während unterschiedlicher Phasen eines Dichteingriffs.

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

• 1 shows a (enlarged) cross section through an extruded sealing profile according to the invention;
• Figures 2 and 3 two other embodiments of an extruded sealing profile according to the invention;
• FIGS. 4, 5 and 6 show three further design variants for an extruded sealing profile according to the invention as a door seal with a foot region attached centrally to the profile back, and
• 7, 8, 9 and 10, the sealing profile from FIG. 1 in the installed state during different phases of a sealing engagement.

In the different figures, the same or corresponding parts are provided with the same reference numerals.

The sealing profile shown in cross section (enlarged) in FIG. 1, which preferably consists of a foamed material or of an elastic material such as TPE, soft PVC or APTK, has a head region 1 designed as a hollow cross section with a profile back 2 and a foot region 3 , on which a retaining lip projecting obliquely on one side is attached, which on its underside again has a smaller retaining lip 5 for better anchoring in a (not shown) receiving groove 20 of a sash rebate 21 of a window or a door (see FIG. 7) .

The head region 1 designed as a hollow profile is formed on one side by a section of a profile back 2. On the opposite side of the hollow cross section, a sealing web 6 is provided, which consists of three individual sections 6.1, 6.2 and 6.3. The uppermost individual section 6.1 in FIG. 1 is connected at its upper end via a connecting web 7 to the upper end of the profile back 2. As the figures show, the connecting web 7 is bent or bulged in the direction of the interior of the hollow cross section.

The sealing web 6 runs on its lower, i.e. the foot region 3 towards the end into a crosspiece 8, which in turn is offset at a small distance from this junction in the direction of the profile back 2 into an oblique support web 9 which in turn projects from the crosspiece 8 to the same side as the sealing web 6 and diagonally connects the crossbar 8 with the profile back 2. At the same point at which the crosspiece 8 of the support web 9 runs obliquely upwards, a second support web 10 branches off from the crosspiece 8 obliquely downwards in the direction towards the foot end of the profile back 2. The first support web 9, the second support web 10 and the profile back 2, as the figures show well, form a very dimensionally stable triangular cross section, which becomes very stiff at the end of the sealing engagement.

The lengths L1, L and L3 of the individual sections 6.1, 6.2 and 6.3 of the sealing web 6 are selected in the exemplary embodiment shown such that the length L of the central individual section 6.2 is twice as long as the length L1 of the section 6.1 or the length L3 of the section 6.3 is, the lengths L1 and L3 of the two individual sections 6.1 and 6.3 are approximately the same size.

As clearly shown in FIGS. 1 to 3, on the side of the profile back 2 facing the interior of the hollow cross section, a projecting profile 12 is formed thereon (and additionally also on the supporting web 9), which in the form of two individual projections projecting there, mirror-symmetrical to one another 12.1 (on the profile back 2) and 12.2 (on the support web 9) is formed. As shown in FIGS. 1 to 3, these projections 12.1 and 12.2 protrude equally far into the interior of the hollow cross section and serve in the installed state, as can be seen from FIG. 10 is to provide additional support for the central individual section 6.2 of the sealing web 6, if this should be moved further beyond the sealing engagement position shown in FIG. 10 in the direction of the profile back 2 by particularly great pressure of the counter surface 22 to be sealed. As soon as the center of the individual section 6.2 has reached these projections 12.1 and 12.2, the support is so strong that considerably increased forces are then required for a further reduction of the sealing gap S.

As can also be seen from FIGS. 1 to 3, the individual sections 6.1, 6.2 and 6.3 of the sealing web 6, viewed in cross section, each run essentially in a straight line, i.e. each of them is not curved in itself. As shown in FIG. 2, in the non-installed state, the bottom individual section 6.3 running upward from the crosspiece 8 extends approximately parallel to the profile back 2 in the strand seal shown there, while the middle individual section 6.2 is positioned opposite it by an acute angle α and in a direction that points away from the profile back 2. The uppermost individual section 6.1 is in turn set at an also acute angle β with respect to the central individual section 6.2, but in an opposite direction, i.e. so that it again slopes towards the (elongated) profile back 2.

In the embodiment according to FIG. 1, the section 6.1 coming from the connecting web 7 is extended beyond the connection point with the central section 6.2 of the sealing web 6 by an end section 14, which in the case of sealing engagement with an essentially straight alignment of both sections 6.1 and 6.2 relative to one another a corresponding depression 15 provided on the outside of section 6.2 can be received in such a way that the outside of both sections 6.1 and 6.2 facing away from the hollow cross section lie essentially in one plane.

This adjustment of the individual sections 6.1, 6.2 and 6.3 to one another achieves a comparatively large expansion T of the sealing head, seen in its width, which results in a large tolerance acceptance of this seal.

7 to 10, the seal shown in FIGS. 1 to 3 is shown in the installed state in the sequence of a sealing engagement.

The sealing profile is inserted with its foot region 3 into the receiving groove 20 of a sash rebate 21 of a window or a door, the cross bar 8 covering and sealing the holding groove 20 on the outside thereof at the top.

Fig. 7 shows the seal shortly after Berginn of the sealing engagement, at a time at which the counter surface 22 to be sealed has already reduced the sealing gap S to such an extent that the uppermost individual section 6.1 on its outside completely against the outer surface of the counter surface 22 to be sealed (approximately a door or window frame).

When the sealing gap S is further reduced, as shown in FIG. 8, the uppermost individual section 6.1 and the central individual section 6.2 are tilted together in the direction of the profile back 2, so that in the illustration according to FIG. 8 the three individual sections 6.1, 6.2 and 6.3 are almost continuously aligned with each other. When the sealing gap is reduced, as occurs in the transition from the illustration in FIG. 7 to that in FIG. 8, the initial alignment of the individual sections 6.1, 6.2 and 6.3 ensures one another (as can also be seen in the figures without further notice) can) that in this initial step of the sealing engagement, the central individual section 6.2 provides good support with respect to the upper individual section 6.1 and in turn can be excellently supported on the lower individual section 6.3 for transmitting the forces in the longitudinal direction.

With the further reduction of the sealing gap in the continued sealing engagement to the position shown in FIG. 9, a noticeable tilting of the lower individual section 6.3 of the sealing web 6 now occurs, namely in the direction of the thickening 11 of the supporting web 9, while the alignment of the other two individual sections 6.1 and 6.2 remain almost unchanged relative to each other (compared to their mutual position in FIG. 8).

The sealing engagement is finally carried out up to the end position shown in FIG. 10, in which the lowermost individual section 6.3, with its inner surface lying in the hollow cross section, is supported on top of the thickening 11 of the support web 9. In this case, as shown in FIG. 10, the counter surface of the part 22 to be sealed can still lie at a very small distance from the outer surface of the central web section 6.2 facing it. The thickness of the middle web section 6.2 or the depth a of the depression on the outside of the middle web section 6.2 (cf. FIG. 1) and the thickness of the protruding lip 14 on the uppermost web section 6.1 can also be selected such that when folded completely of the upper web section 6.1 and the resultant running in of the sealing lip 14 into the depression a of the middle web section 6.2, a sealing system occurs not only on the outside of the upper web section 6.1, but also on the outside of the middle web section 6.2 (not shown in the figures).

Furthermore, above the profile projection 12 on the sealing spine 2, a bulge 23, which is only indicated in the figures, can be provided on the profile spine 2, which is so large that, in the final state of the sealing engagement (corresponding to the state in FIG. 10), the bulging inwards there lying leg of the connecting web 7 can be supported on this bulge 23 (not shown in the figures).

As shown in FIGS. 1 to 3, the three individual sections 6.1, 6.2 and 6.3 are fastened to one another via articulation points 13 in such a way that they can be tilted to one another easily and particularly easily and without transmission of any significant torques. These articulation points, which are also formed between the two outermost individual sections 6.1 and 6.3 and the webs connected to them (connecting web 7 or cross web 8), are preferably, as shown in the figures, designed by thinning the cross-section of the sealing web 6 in the form of notches 13 .

4 to 6 show other embodiments of such an extrusion seal, here the foot section 3 in the form of an approximately in the middle of the profile back 2 perpendicular to this projecting web with harpoon ribs 4 attached to it. These configurations of the strand seal are used as pure door seals. In this case, the connecting web 7 and the cross bar 8 protrude from the two ends of the profile back 2, the cross bar 8 has a free sealing lip 16 projecting noticeably beyond the junction with the sealing web 6.

While in the seal according to FIG. 4 the individual section 6.1 of the sealing web 6 running from the connecting web 7 protrudes beyond the junction of the following individual section 6.2 (on its underside) with the formation of a protruding sealing lip 14 which extends into a corresponding recess a on the adjoining upper end region of the central individual section 6.2 can be folded in during sealing engagement, in the embodiments of FIGS. 5 and 6 such a protruding sealing lip 14 is no longer attached to section 6.1.

The shapes of the sealing cross section from FIGS. 5 and 6 differ from one another in that the individual sections 6.1 and 6.2 are shaped differently: in FIG. 5, the middle section 6.2 forms a continuous surface 30 on its upper side, while in FIG. 6 the surface of this individual section 6.2 has a lowering in the end region adjoining section 6.1. In addition, section 6.1 is fastened here via a notch groove 31 formed on its underside as a hinge point to the middle section 6.2, while in FIG. 5 this hinge point is realized by providing a notch groove 32.

The same differences also exist between the different embodiments shown in FIGS. 2 and 3, as can be recognized immediately when these figures are viewed.

Claims (13)

Elastic strand seal for windows, doors or the like. With a hollow section (1) which has a profile back (2), which in turn has a sealing foot (3) with retaining lips (4, 5) for anchoring in a retaining groove of a sash rebate or similar is provided, the sealing head (1) on its side opposite the profile back (2) having a sealing web (6) consisting of three individual sections (6.1, 6.2, 6.3), which at one end has a direction towards the inner region of the hollow cross section pre-arched or buckling connecting web (7) is connected to one end of the profile back (2) and opens at its other end into a cross web (8), which slants into it at a distance from the profile back (2) and enters it diagonally on the same side as the sealing web (6) projecting support web (9) is connected to the profile back (2), wherein the individual sections (6.1, 6.2, 6.3) of the sealing web (6) are each pivotally connected to one another, seen in cross section in run essentially in a straight line and, in each case in the non-installed state of the strand seal, the middle individual section (6.2) to the individual section running from the crosspiece (8) nitt (6.3) by an acute angle (α) in one direction away from the profile back (2), while the individual section (6.1) running from the connecting web (7) extends to the central individual section (6.2) by an acute angle (β) in Direction towards the profile back (2) extends inclined, and wherein the individual section (6.3) starting from the crosspiece (8) can be pivoted upon sealing engagement until it rests against the support piece (9). Elastic strand seal according to claim 1, characterized in that the sealing foot (3) is formed in the extension of the profile back (2). Elastic strand seal according to claim 2, characterized in that in the area of the sealing foot (3) there is provided a further second supporting web (10) which is positioned obliquely towards the lower end of the sealing foot (3) and which is in the transverse web (8) approximately at the point opens out, at which the support web (9) runs out of the cross web (8), the support web (9) with the profile back (2) and the second support web (10) forming a triangular arrangement. Elastic strand seal according to claim 1, characterized in that the sealing foot (3) runs approximately perpendicularly from the center of the profile back (2). Elastic strand seal according to one of claims 1 to 4, characterized in that the support web (9) on its web section adjacent to the cross web (8) has a bulging bulging toward the interior of the hollow cross section of the sealing head (1), against which the facing side of the with the Transverse web (8) connected individual section (6.3) of the sealing web (6) when swiveling in sealing engagement can be applied. Elastic strand seal according to one of claims 1 to 5, characterized in that at a distance from the upper end of the profile back (2) which is greater than the maximum curvature of the connecting web (7) in the event of a sealing engagement, on the in the hollow cross section of the head region (1) on the inner side of the profile back (2) there is a projecting profile elevation (12) against which the central individual section (6.2) of the sealing web (6) does not yet bear when the sealing engagement occurs, if the individual section (6.3) of the sealing web connected to the transverse web (8) comes to rest on the thickening (11). Elastic strand seal according to one of claims 1 to 6, characterized in that the connection of the individual sections (6.1, 6.2, 6.3) to one another or to the associated connecting web (7) or transverse web (8) in each case via an articulation point (13) in shape a depression which locally reduces the cross-section of the web. Elastic strand seal according to one of claims 1 to 7, characterized in that at the upper end of the profile back (2) in the region of the junction of the connecting web (7) an area made of a harder material than the material of the remaining sealing profile is formed. Elastic strand seal according to one of claims 1 to 8, characterized in that the central individual section (6.2) runs into the individual section (6.1) running from the connecting web (7) on its underside facing the profile back (2), this individual section (6.1) extends beyond the connection point with the central individual section (6.2) and the projecting end section (14) in the case of sealing engagement and alignment of the two individual sections (6.1, 6.2) with respect to one another into a depression provided on the corresponding outside of the central web section (6.2) (15) can be pivoted in such a way that in the aligned state the outer sides of the two individual sections (6.1, 6.2) lying away from the hollow cross section lie essentially in one plane. Elastic strand seal according to one of claims 1 to 9, characterized in that the length (L) of the central individual section (6.2) is greater than the length (L1, L3) of each of the other two individual sections (6.1; 6.3). Elastic strand seal according to claim 10, characterized in that the length (L) of the central individual section (6.2) is approximately twice as long as the length (L1, L3) of each of the other two individual sections (6.1; 6.3). Elastic strand seal according to one of claims 1 to 11, characterized in that the profile elevation (12) of the profile back (2) consists of two adjacent individual elevations (12.1, 12.2). Elastic strand seal according to one of claims 1 to 12, characterized in that the transverse web (8) forms a web section (16) projecting beyond the connection point with the one individual section (6.3) and away from the profile back (2).

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