WINDOWSILL INSTALLATION SYSTEM

Abstract

 A windowsill installation system comprising at both sides of the windowsill perpendicular to the windowsill axis a facade rail 1 formed in a cross-section from three joined at right angle flatbars, top, side and profiled bottom with a plurality of ribs and grooves, and the longer arm of a windowsill sideguard 5 is located between the arms of the facade rail.

Description

[0001] The invention relates to a windowsill installation system used in the construction industry for window works.

[0002] The prior art windowsill installation system is cumbersome in implementation and time-consuming. When the window is mounted and sealing foam is applied the windowsill is installed, fixed underneath the window and, similarly, the assembling foam is applied from underneath. The lateral sections of the windowsill are provided with the sideguards covering the sharp edges thereof. The sideguards are inserted in the lateral lining of the window opening and covered in the upper section with the lining thermal insulation polystyrene and the polystyrene is coated with mesh and decorative layer, e.g. plaster.

[0003] A disadvantage of said system is no possibility to replace the windowsill without intrusion in the building facade. When installing and during the use of the windowsill scratches or mechanical damage may occur, which leads to complaints and results in significant costs of the windowsill replacement. Said system has been present in the construction industry for long time and it is a technologically outdated system.

[0004] When a thermal "warm windowsill" appeared on the market a possibility to modify the manner in which a windowsill is installed has become available by using a new technology allowing a windowsill replacement any time during its use. So called "thermal windowsill" is in fact a profile made from foamed plastic on which the proper windowsill is then mounted. From the patent specification P.411004 is known a windowsill mounted on said thermal profile. The under-window set comprises a flat-based thermal insulation under-window element comprising an under-window beam provided with a window frame joining system and an under-windowsill section from the interior side of the room comprising grooves and humps formed on the upper and lower surface. The lower surface of the under-window beam base of the thermal insulation under-window element is provided with a reinforcing bar. The reinforcing bar is connected with at least one angle element.

[0005] From the patent specification WO 2006/008279 a windowsill installation system is known comprising at least one groove of cuts to fix thereof in the concrete. The anchors in the windowsill are of a complex structure. The invention allows anchoring a windowsill due to the mounting means that are inside the cut groove on the windowsill and via metal mounting means in the shape of a tape. The windowsill installation is performed by means of one ending thereof, preferably anchored inside one of the cut grooves on the windowsill. The windowsill is then placed in and adjusted to the opening in the wall and the mounting element in the shape of a tape on a frontal edge of the wall is bent downwards and attached to the wall.

[0006] The subject of the present invention is a windowsill installation system comprising a section of a profile with sideguards attached on the sides, having at both sides of the windowsill and located perpendicularly to the sill axis facade rails. The facade rail is formed in a cross section from three joined at right angle flatbars, top, side and profiled bottom with a plurality of ribs and groove, and a longer arm of a windowsill sidequard is located between the arms of the facade rail. A lower arm of the facade rail at the top plane has a groove for a side seal. Additionally, said arm at the top plane has a groove for a drain. The guard is L-shaped and the arms thereof form C-letter profiles with the opening directed towards the windowsill, and in the bottom section of the longer arm of the guard a groove is formed for the lateral section of the windowsill.

[0007] The new windowsill system provides fast and easy installation. The most important in the new system is the fact that the windowsill is not permanently connected with the building facade. It is of great importance when the damaged windowsill is to be replaced by a new windowsill. Replacement of the windowsill according to the invention is performed in an easy manner: the damaged windowsill is slided out from underneath of the window and the new one is slided in, without intrusion in the building facade and window.

[0008] Also, problematic in windowsill installation is an appropriate windowsill cut to fit length. The windowsill, which in some of the known installation systems must be trimmed with an accuracy of 5 mm, causes significant problems due to window opening measurement errors at the construction site and cutting with a circular saw.

[0009] The solution used in the new system allows tolerance in the windowsill length up to 20 mm. It is enabled by a special structure of the newly designed facade rail and lateral windowsill ending, the guard. A special routing in a form of a groove in the lower arm of the guard and the width thereof allows the axial movement of the windowsill in the range up to 10 mm. Such tolerance is enough to compensate the measurement error and windowsill cutting error.

[0010] The invention is presented in the preferred embodiment in the drawing where Fig. 1 shows a view of the windowsill installation system from the windowsill side, Fig. 2 a lateral axonometric view from the external side, Figs. 3 and 4 show a facade bar from two different views, and Figs. 5 and 6 presents a sideguard from both sides. Fig. 7 shows a view of a drain.

[0011] A facade rail 1 is present on the right and left side of the windowsill and is attached thereto perpendicular to the longitudinal axis of the windowsill. The shape of the rail in a cross-section is formed by three joined at a right angle profiled flatbars, top, side and bottom. The width of the top and side flatbar of the rail is alike, but the bottom flatbar is significantly longer and both on upper and lower surface comprises at the length of the rail a plurality of ribs and grooves of different shapes: rectangle, half-round, right-angled trapezium, isosceles trapezium, and even parallelogram. The ending of the lower arm is a flat bar mounted in T-shape.

[0012] The groove of the lower arm of the facade rail, in the central section of the upper surface thereof, a shape thereof similar to an isosceles trapezium, comprises a side seal 2 placed in by sliding. The seal from the top is similar in shape to a semi-circle section, hollow inside, and a bottom section reproduces a shape of the groove and is the element joining the seal with the rail. The rail comprises at least two side seals mounted on the right and left side of the rail.

[0013] Adjacent to the seal, nearer the side of the windowsill, at the bottom section of the facade rail, in the groove thereof of a shape of isosceles trapezium a drain 3 is slided in. It is a water disposal mounted onto the rail from the front thereof in order to remove any water.

[0014] Between the window frame and windowsill there is an under-window seal 4 surrounding a window sill bar, for sealing the rear section of the windowsill.

[0015] The under-windowsill that is not shown in the drawing is a typical steel or plastic profile of a shape similar to Z. At the endings of the windowsill are placed sideguards 5, left and right. The guard is L-shaped and the arms thereof form a trough profile from three joined at a right angle bars. In the lower bar of the longer arm of the guard there is a slot formed of a thickness similar to the thickness of the windowsill. In said slot the lateral section of the windowsill is placed.

[0016] The longer arm of the guard by the dimensions and shape thereof is similar to the recess formed by the arms of the facade rail. In said recess the sideguard together with the windowsill is placed.

[0017] The windowsill installation system involves mounting special profiled rails, the facade rail 1, to a thermal windowsill 6 and to the building facade. The windowsill sideguard 5 and a terminal section of the thermal windowsill 6 together with the rail 1 is permanently mounted onto the window lining and, alike to the prior art system, is coated with polystyrene, mesh and decorative plaster. The said installation system provides easy sliding of the windowsill in and out of the guides, without intrusion in the building facade. Prior to sliding the windowsill into the system an assembling foam or expanding tape is applied on the thermal windowsill 6 in order to fix the windowsill to the substrate. The windowsill can be additionally screwed or glued to the under-window bar, however it is not necessary.

[0018] Exemplary facade rail has the following dimensions - width ca. 73 mm, height 32.5 mm, overhanging top profile ca. 25 mm and ca 9 mm flat bar terminating the longer arm of the facade rail mounted perpendicular in half thereto forming a T shape therewith.

Claims

1. A windowsill installation system from a section of a profile with attached on the sides sideguards, characterized in that at both sides of the windowsill is located perpendicular to the windowsill axis a facade rail (1) formed in a cross section from three joined at right angle flatbars, top, side and profiled bottom with a plurality of ribs and groove, and the longer arm of a windowsill sideguard (5) is located between the arms of the facade rail.

2. The system according to Claim 1, characterized in that a lower arm of the facade rail on the top plane comprises a groove for a side seal (2).

3. The system according to Claim 1, characterized in that a lower arm of the facade rail on the top plane comprises a groove for a drain (3).

4. The system according to Claim 1, characterized in that a guard is L-shaped and the arms thereof form a C-shaped profile with the opening thereof directed towards the windowsill, and in the lower section of the longer arm of the guard a groove is formed for the lateral section of the windowsill.

Drawing