AT518469B1 - Seal and window element - Google Patents

Abstract

The invention relates to a seal for a window frame with a web-shaped base (10) extending along a vertical axis H and a longitudinal axis L, a sealing foot (11) for connection to the window frame and a first sealing lip (12) for sealing against a window sash , It is characterized in that the base (10) between legs (13, 14) of the first sealing lip (12) is arranged, each extending obliquely to the vertical axis H and together with the base (10) form a joint (22) ,

Description

Description: The invention relates to a seal and a window element. A seal with the

Features of the preamble of claim 1 are known for example from DE 43 26 115 A1.

Seals are generally required to keep media such as liquids or dirt, possibly also sound, away from a defined area. Depending on the application, elastic profiles, rings or molded parts are used. For windows, a distinction is made between glazing seals, which are installed between the window frame and the window glass, and seals for window frames, which are connected to the frame and, in use, are arranged between the frame and the window sash.

Seals for window frames are exposed to loads on the window in heavy rain or flood. The water column that occurs under these conditions leads to deformation of the window sash including glazing, fittings and window frame. The gap between the window sash and the frame changes. The seal should be designed in such a way that this deformation is compensated for.

The above-mentioned DE 43 26 115 A1 describes a window system with several seals, which u.a. comprise a seal for a window frame. This seal is connected to the frame and seals the gap between the frame and the window sash.

The seal has a base web which is connected to a sealing foot. When installed, the sealing foot is clipped into a first groove in the aluminum outer frame of the frame. The base web is connected at one end to a sealing lip which protrudes from the base web and, in the closed state, lies against the window sash and seals it. On the side of the base web facing away from the sealing lip, an essentially rectangular sealing profile is arranged, which is arranged in a corresponding second groove in the frame.

The problem with such seals is that on the one hand the already mentioned deformation and gap enlargement during flood or heavy rain between the window frame and the window sash must be compensated. This applies in particular to watertight windows which, after 24 hours, must not allow water to pass through the window into the interior. On the other hand, the sealing force required for this must not lead to the closing force of the window becoming so great that it is difficult to close the window.

The invention is based on the object to improve the aforementioned seal for a window frame so that a good seal against water, especially in heavy rain or flood, is achieved without the closing force of the window being excessively increased. The invention is also based on the object of specifying a window element which meets these requirements.

According to the invention the object is achieved with a view of the seal by the subject matter of claim 1 and with a view of the window element by the subject of claim 12.

The invention is based on the idea of specifying a seal for a window frame with a web-shaped base which extends along a vertical axis and a longitudinal axis. The seal has a sealing foot for connection to the window frame and a first sealing lip for sealing against a window sash. The first sealing lip has legs between which the base is arranged. The legs each extend obliquely to the vertical axis and form a joint together with the base.

The invention has the advantage that in the assembled state with the window closed, a first leg rests on the window sash and a second leg each of the first sealing lip on the frame. The joint formed by the legs and the base enables a / 10

AT518 469 B1 2018-03-15 Austrian

Patent Office

Movement of the legs, if one of the legs, specifically that of the window sash

Thigh, is loaded. The arrangement of the base between the legs causes one

Rocking movement of the first sealing lip and thus the leg around the joint. On the on

The frame adjoining the frame acts as a result of a contact torque which presses it against the

Frame presses and the sealing force increases.

The term joint is generally understood to mean a connection between two components (here: first sealing lip, base) which allows a relative movement (here: rotary movement) between these components. The hinge has the advantage that the sealing force is increased by loading the legs and the associated contact torque when the window is closed or in the closed state. Since the hinge creates little resistance when the window is closed, the closing force is only slightly increased.

The oblique arrangement of the two legs to the vertical axis leads to the fact that the legs are deflected in a desired direction when the window sash meets the first sealing lip when the window is closed.

By working on the seesaw principle, obliquely arranged legs of the first sealing lip, the sealing force is increased without the closing force of the window being significantly affected. The preload of the seal can therefore be made low. This slight preload of the seal (sealing lips) initially ensures a lower contact pressure and a lower initial sealing effect. When the water column rises (water pressure), the sealing lip is pressed ever more strongly against the window sash by the water pressure and improves the sealing effect.

The water pressure places and presses the sealing lips on their own bias (biasing force) close to the frame and the window sash and in this way additionally increases the sealing effect. In addition, if the window sash is deformed, e.g. the contact of the sealing lip with the window sash - and thus the tightness of the window element - can be achieved by the water pressure even at high water pressures.

[0015] Preferred embodiments of the invention are specified in the subclaims.

Thus, the base can have at least a second sealing lip on the side facing away from the sealing foot in order to generate additional security against penetrating water. Within the scope of the invention, a plurality of sealing lips can be arranged on the side facing away from the sealing foot.

Preferably, the legs are aligned and form a common transverse axis that extends obliquely to the vertical axis of the base. In this embodiment, the two legs form a rocker-like lever, through which a defined movement and good torque transmission between the legs is made possible.

In a preferred embodiment, the leg, which is arranged on the side of the sealing foot, is inclined towards the sealing foot. This embodiment is particularly advantageous if the frame or part of the frame is arranged between the sealing foot and the first sealing lip, so that when the window is closed, the leg arranged on the side of the sealing foot is pressed against the frame.

In a particularly preferred embodiment, the leg, which is arranged on the side of the sealing foot, is shorter than the other leg. This has the advantage that the leverage is improved. The longer leg is arranged on the side facing away from the sealing foot and is loaded by the window sash, so that the closing force is introduced into the lever arrangement via the longer leg.

Preferably, the free end of at least one leg is spherical. The free ends of both legs of the first sealing lip can be spherical. This has the advantage that a line-shaped barrier is formed with different deformations of the window frame or the window sash and thus with different gap widths.

It is expedient between the sealing foot and one of the two legs 2/10

AT518 469 B1 2018-03-15 Austrian

Patentamt kel formed a throat with ribs that run substantially parallel to the sealing foot. When assembled, the throat is pressed against a surface of the frame. The

Ribs apply linear pressure to the frame, which improves the sealing effect.

The throat is preferably filled at least in sections with a non-adhesive sealant. This version is particularly suitable for the corner areas of the seal, which improves the sealing effect in these critical areas. The ribs or the valleys arranged between the ribs also form a receiving reservoir for the sealant, which can be distributed along the ribs. This further improves the sealing effect.

In the preferred embodiment, the base has a third sealing lip in the form of a V-shaped double lip, which is arranged on the side used by the sealing foot. The V-shaped sealing lip acts as an air seal, which due to the V-shape reacts to both tension and pressure.

The invention is explained in more detail below with reference to exemplary embodiments with reference to the accompanying drawings.

1 shows an isometric representation of a section of a seal according to an exemplary embodiment according to the invention;

a cross section through the seal of Figure 1 in the assembled state.

[0027] Fig.

an isometric view of a seal according to another embodiment, in which the recess is shown in the corner region of the seal, and Fig. 4 shows the back of the seal of FIG. 3 in the corner region, in which the rounded sealing lips can be seen.

Fig. 1 shows a seal for installation in a window frame 26. The window frame 26 is fixed to the masonry and has fittings to which one or more window sashes (not shown) are attached.

[0031] The seal is part of a circumferential sealing frame. The sealing frame can be tailored to the window size. Alternatively, the sealing frame can be formed from piece goods, which are connected to form a frame by glued-in shape corners.

[0032] The seal has a web-shaped base 10. The base 10 forms the basic structure of the seal, to which sealing elements are attached. The base 10 extends along a vertical axis H. In the installed state, the vertical axis H extends approximately parallel to the frame 26. The base 10 also extends along a longitudinal axis L, which is also shown in FIG. 1. The longitudinal axis L runs along the window width or window height.

At the lower end of the base 10, a sealing foot 11 is attached.

The position designations "bottom", "top" refer to the representation of the seal shown in Fig. 1 and changes depending on the installation position.

The sealing foot 11 is objected to by the lower end of the base 10, so that 11 contact surfaces are formed on both sides of the sealing foot, which come into contact with the frame in the assembled state, as can be seen in FIG. 2. The sealing foot 11 is connected to a long side of the base 10 and extends in the installed state in the direction of the frame 26.

The sealing foot 11 is hook-shaped and engages, as shown in Fig. 2, in the assembled state in the frame 26. The hook shape of the sealing foot 11 creates a secure connection with the frame 26. In the example according to FIG. 1, the sealing foot 11 has a hollow chamber 23. Instead of the hollow chamber 23, an open profile can be used for the sealing foot 11, as shown for example in FIG. 3/10

AT518 469 B1 2018-03-15 Austrian patent office. Other geometries of the sealing foot 11 are possible.

At the upper end of the base 10, the first sealing lip 12 with the two legs 13, 14 is arranged. The first leg 13 is arranged on the same side of the base 10 on which the sealing foot 11 is arranged. The first leg 13 is in the assembled state on a surface of the frame (Fig. 2). The second leg 14 is arranged on the side of the base 10 facing away from the sealing foot 11. In the assembled state, the second leg 14 rests against a surface of the window sash (not shown).

The two legs 13, 14 together form the first sealing lip 12 which on both sides, i.e. seals on the one hand against the frame 26 and on the other hand against the window sash.

The two legs 13, 14 are arranged on both sides of the base 10 and protrude beyond the long sides of the base 10. In other words, the base 10 is arranged between the two legs 13, 14. The legs 13, 14 are connected directly to the base 10 and terminate with the upper end of the base 10. The base 10 merges into the two legs 13, 14. The two legs 13, 14 and thus the first sealing lip 12 form the outermost sealing plane of the seal. For this purpose, the legs 13, 14 form an essentially straight sealing surface 24, which is arranged between the frame 26 and the window sash in the assembled state. When the window is closed, the sealing surface 24 can deform.

[0040] The two legs 13, 14 are arranged in alignment along a transverse axis Q. The transverse axis Q is essentially perpendicular to the longitudinal axis L, i.e. across the gap between the frame 26 and the window sash. The transverse axis Q of the two legs 13, 14 extends obliquely to the vertical axis H. The transverse axis Q includes an acute angle a together with the vertical axis H. In other words, the two legs 13, 14 are inclined so that they form an angle together with the base 10 that is less than 90 °. The angle a is in a range from 10 ° to 80 °, in particular from 30 ° to 60 °.

The inclination of the two legs 13, 14 is chosen so that the first leg 13 is inclined toward the sealing foot 11. In other words, in the illustration of the seal shown in FIG. 1, the first leg 13 is inclined downwards and the second leg 14 is inclined upwards.

The two legs 13, 14 form a joint 22 together with the base 10. The joint 22 is realized by the flexibility of the seal in the region of the connection point between the legs 12, 13 and the base 11. When the second leg 14 is loaded when the window is closed, the connection point in the region of the joint 22 can deform, so that a rocking movement of the first sealing lip 12 is generated and the two legs 12, 13 a movement about the joint 22 relative to the fixed base 10 To run.

Instead of the articulated, flexible connection point between the base 10 and the first sealing lip 12, other joints are possible. The advantage of the joint according to FIG. 1 is that it can be produced very easily in the context of an extrusion process.

The above-mentioned inclination of the two legs 13, 14 relative to the vertical axis H leads to the fact that the sealing lip 12 performs a defined movement around the joint 22 when the second leg 14 is loaded by the window sash. Specifically, the second leg 14 in the illustration shown in FIG. 1 is pressed upwards and the first leg 13 is pressed down (rocker principle). As can be seen in FIG. 2, the first leg 13 is pressed against the frame by the movement around the joint 22, as a result of which the sealing force is increased. The contact torque acts around the joint 22.

The water pressure places and presses the sealing lips beyond their own prestressing (prestressing force) to the frame and the window sash and in this way additionally increases the sealing effect. In addition, if the window sash is deformed, e.g. the contact of the sealing lip with the window sash - and thus the tightness of the window element - can be achieved by the water pressure even at high water pressures.

4.10

AT518 469 B1 2018-03-15 Austrian Patent Office In this context, it should be pointed out that the illustration according to FIG. 2, in which the first leg 13 dips into the frame, is to be understood as meaning that the first

Leg 13 is biased against the frame in the assembled state. The bias is increased by the action of the second leg 14 on the closing force of the window.

The inclination of the first leg 13 to the sealing foot 11 is provided for an embodiment in which the frame 26 is arranged in the throat 17 between the sealing foot 11 and the first sealing lip 12. With a different geometry of the frame, an appropriately adapted inclination of the first sealing lip 12 is possible.

As can be clearly seen in FIGS. 1, 2, the legs 13, 14 have different lengths. Specifically, the second leg 14 on the window side is longer than the first leg 13 on the side of the frame 26. This creates a leverage effect that increases the contact torque.

In Fig. 1 it is shown that the free ends 16 of the two legs 13, 14 are each crowned. This has the effect that in the case of different gap widths between the frame 26 and the window sash, which can be set as a function of the respective load, line-shaped contact points of the seal form, which ensure a good sealing effect.

To improve the sealing effect, in particular as a drip protection, a second sealing lip 15 is arranged on the side of the base 10 facing away from the sealing foot 11. The second sealing lip 15 extends essentially parallel to the second leg 14 of the first sealing lip 12. The second sealing lip 15 is somewhat shorter than the second leg 14.

The seal has a third sealing lip 19 which is V-shaped. Specifically, the third sealing lip has two legs 19a, 19b arranged in a V-shape, the base 19c of which is connected to the base 10. The V-shape of the third sealing lip 19 serves to support the airtightness under pressure and suction during normal loading. One of the two legs 19a, 19b is arranged essentially parallel to the second sealing lip 15. The two legs 19a, 19b of the third sealing lip 19 are arranged essentially at an angle of 90 °.

The second sealing lip 15 is arranged approximately between the sealing foot 11 and the joint 22 of the first sealing lip 12. The third sealing lip 19 is arranged approximately in the area of the lower edge of the sealing foot 11, i.e. slightly closer to the lower end of the base 10 than the sealing foot 11.

A different number of sealing lips in addition to the first sealing lip 12 and a different arrangement of these sealing lips is possible.

A further improvement in the sealing effect is achieved by the throat 17 formed between the sealing foot 11 and the first leg 13. As can be seen in FIG. 1, ribs 18 are formed on the base of the throat and extend parallel to the sealing foot 11. In the assembled state, the ribs 18 lie linearly on the frame and thus increase the sealing effect.

In order to support the sealing effect in the miter region of the seal or the sealing frame, a sealant is additionally used in this region. It is a non-curing and non-adhesive resin-based sealant. The miter area can be seen in Fig. 3. The sealant is filled in the throat 17 between the sealing foot 11 and the first sealing lip 12. The ribs 18 arranged in the form of grooves support the distribution and flow of the sealant along the ribs 18, as a result of which several sealing planes are established. The sealing effect created by the ribs is further enhanced by the sealant. The ribs also prevent the sealant from migrating during movements transverse to the direction of the ribs. A reservoir for the sealant is formed between the ribs or below and above the ribs. This also compensates for lateral forces on the sealing frame due to thermal or structural stresses on the window

AT518 469 B1 2018-03-15 Austrian

Patent office. Another advantage of the non-adhesive sealant over adhesive is the possibility of disassembly, for example for maintenance purposes.

A further improvement of the seal in the miter area is to provide a recess 21 on the seal foot 11 in the corner area 20 or the miter area of the seal. This avoids the formation of notches and / or beads in the miter area or at least reduces the risk of such formation.

To improve the sealing effect on the side facing away from the sealing foot 11 in the base 10 are formed in the sealing lips 12, 15, 19 in the miter region radius. This is shown in FIG. 4, for example. This prevents the seal from being raised when the window is closed.

In the context of the invention, the seal is claimed both as a sealing profile in the form of yard goods and as a sealing profile in the form of a sealing frame, which is assembled all around and adapted to the window size. The sealing frame can also be formed by glued or welded shape corners. Furthermore, an arrangement comprising a window element with a seal according to the invention is claimed within the scope of the invention. The window element is expediently a window frame.

6.10

AT518 469 B1 2018-03-15 Austrian patent office

LIST OF REFERENCE NUMBERS

Base

Sealing foot first sealing lip first leg second leg second sealing lip free ends

throat

Ribs third sealing lip

19a leg

19b thigh

19c feet

corner

recess

joint

hollow

Sealing surface free

frame

7.10

AT518 469 B1 2018-03-15 Austrian patent office

Claims (12)

claims 1. Seal for a window frame with a web-shaped base (10) which extends along a vertical axis H and a longitudinal axis L, a sealing foot (11) for connection to the window frame and a first sealing lip (12) for sealing against a window sash, thereby characterized in that the base (10) is arranged between legs (13, 14) of the first sealing lip (12) which each extend obliquely to the vertical axis H and together with the base (10) form a joint (22). 2. Seal according to claim 1, characterized in that the base (10) has at least one second sealing lip (15) on the side facing away from the sealing foot (11). 3. Seal according to claim 1 or 2, characterized in that the legs (13, 14) are aligned and form a common transverse axis Q which extends obliquely to the vertical axis H of the base (10). 4. Seal according to one of the preceding claims, characterized in that the leg (13), which is arranged on the side of the sealing foot (11), is inclined towards the sealing foot (11). 5. Seal according to one of the preceding claims, characterized in that the leg (13), which is arranged on the side of the sealing foot (11), is shorter than the other leg (14). 6. Seal according to one of the preceding claims, characterized in that the free end (16) of at least one leg (13, 14) is spherical. 7. Seal according to one of the preceding claims, characterized in that between the sealing foot (11) and one of the two legs (13) a groove (17) is formed with ribs (18) which run parallel to the sealing foot (11). 8. Seal according to claim 7, characterized in that the throat (17) is at least partially filled with a non-adhesive sealant. 9. Seal according to one of the preceding claims, characterized in that the base has a third sealing lip (19) in the form of a V-shaped double lip on the side facing away from the sealing foot (11). 10. Seal according to one of the preceding claims, characterized in that the sealing foot (11) has a recess (21) in a corner region (20). 11. Seal according to one of the preceding claims, characterized in that at least the first sealing lip (12), in particular the first, second and third sealing lip (12, 15, 19) are curved in a corner region (20). 12. Window element, in particular window frame, with a seal according to one of the preceding claims.