GB2168101A - Glazing - Google Patents

Abstract

A window arrangement comprises a box-section frame member 5 with a fixed abutment 2, a glazing bead 1 with retaining lugs 21, 22 engaged in channels 6, 7 in the frame member and spaced locking elements 3; the glazing 10 is retained between resilient strips 13, 17; the locking element 3 is a metal (or suitable plastics) plate and is retained in a groove 16 in the glazing bead and against the face 12 of the abutment 2. The locking element prevents unauthorized removal of the bead from outside but may be removed from inside by pressing the end 9 into the groove 8 so releasing the bead. <IMAGE>

Description

SPECIFICATION Window frame section The invention relates to a window frame section, in particular of synthetic material e.g.

plastics and/or aluminium.

Window frame sections have been proposed which comprise a main box-section with a box section glazing rabbet joined thereto so as to form a substantially L-shaped section with the glazing rabbet intended to support a glazing insert with the interposition of an elastic glazing seal on the inside of the window, there being a glazing support strip provided for supporting the glazing insert with the interposition of another elastic glazing seal on the outside of the window, the main box-section being formed with two longitudinally extending guide grooves each having a surface running in a plane parallel to the outside edge of the glazing insert for receiving guide rails formed on the glazing support strip, whereby the guide rails can be engaged in and disengaged from said grooves by moving said glazing support strip against the restoring forces of said glazing seals.Such window frame sections are known and are common in the trade. They have the advantage that the installation of the glazing insert can be carried out in a comparatively uncomplicated manner and with a small amount of energy being expanded.

Because, however, with a window casement which is to be opened toward the outside and which is fastened from the outside or with a corresponding fixed glazing with window sections of the type mentioned, the glazing support strip is accessible from the outside of a window, through this very advantage of easy installation, conversely the disadvantageous possibility results that after the glazing support strip is dismantled the window glass can be removed from the outside of the window section and thereby access can be obtained to the interior of the house without smashing the window glass.

It is an object of the invention to provide a window frame section for windows of the type mentioned such that the disadvantageous possibility, described above, of problem-free dismantling and removal of the glazing insert from the outside is no longer possible. Means for preventing unauthorised dismantling should be uncomplicated and able to be produced with the least possible expenditure; in particular it should not increase the energy expended in installation, should not adversely affect the manufacturing process of the window sections through extrusion and in the case of a planned dismantling of the glazing insert it should be able to be unlocked in a simple manner and exclusively from the inside of the window.

Above all, however, the means should desirably not alter the original dimensions of the window section by requiring additional space.

According to the present invention there is provided a window box section, wherein the section comprises a main box-section with a box section glazing rabbet joined thereto so as to form a substantially L-shaped section with the glazing rabbet intended to support a glazing insert with the interposition of an elastic glazing seal on the inside of the window, there being a glazing support strip provided for supporting the glazing insert with the interposition of another elastic glazing seal on the outside of the window, the main box-section being formed with two longitudinally extending guide grooves each having a surface running in a plane parallel to the outside edge of the glazing insert for receiving guide rails formed on the glazing support strip, whereby the guide rails can be engaged in and disengaged from said grooves by moving said glazing support strip against the restoring forces of said glazing seals, and wherein at least one stopping element is provided between the glazing support strip and the glazing rabbet in the region of the side of the main box section, the glazing rabbet being formed with a groove parallel to said guide grooves in the main box section, the arrangement being such that said stopping element acts as a spacer between said glazing support strip and said glazing rabbet to prevent movement of the glazing support strip towards said glazing rabbet and disengagement of said guide rails from said guide grooves, and such that said stopping element can be displaced out of its stopping position whereby one end of the stopping element can be engaged in the groove in the glazing rabbet to permit the glazing element to be moved against the restoring forces of said seal(s) to engage or disengage the guide rails of the glazing support strip in said guide grooves.

Through'the use of the stopping element acting as spacer in co-operation with the groove arranged at the foot of the glazing rabbet, into which groove the stopping element dips with its free end in averted position during installation, the energy expended on fitting the glazing insert is in no way altered or increased, whereas after the fitting, removal of the glazing support strip from the outside of the window is safely prevented through the action of the stopping element as a spacer.

Preferably several stopping elements are arranged at substantially equal distances along the glazing support strip, whereby material is saved and at the same time it is achieved that the glazing support strip remains secured over its entire length.

The or each stopping element may be a plate-shaped shaped part, which is relatively thin in proportion to its length and width, and may be made from hard, resilient material such as high quality synthetic material or metal.

As the stopping element is a relatively thin, plate-shaped shaped part, it can be manufactured at an extremely favourable cost, particularly in large quantities, and it has the advantage that, as it is thin, it can be inserted between the main box section and the glazing insert, without it being necessary to alter the dimensions. Thereby at the same time the advantageous possibility is produced of also later inserting stopping elements into existing window sections if required, for which the necessary grooves merely have to be cut or mille in the glazing support strip and in the glazing rabbet.

Expediently, a stopping element is constructed with a position support in the form of a thickening or bead. In its first function, this support which lies with its underside on or just above the main box section, prevents the stopping element from being able to be pressed down by a narrow object being pushed in between the glazing support strip and the glazing insert from the outside of the window, and from being able to be brought into the unlocking position. In addition, the support provides for a functionally correct position in the installed state, by acting in the manner of a counterpoise as a point of rotation for the stopping element.

In a preferred embodiment, the glazing support strip has a groove opening towards the glazing insert in the region of a plane between an edge of the glazing insert and the upper side of the main box section, into which the stopping element or elements are pushed or inserted. Through this, advantageousy, a mounting for the stopping element is produced which is simple and favourable in cost, whereby at the same time the correct position of the stopping element in its installed state is ensured.

In order to prevent the securing effect of several individually fitted stopping elements from being cancelled out by lateral displacement e.g. of all stopping elements to one end of the window section, the stopping elements are expediently connected securely and firmly by welding, sticking, mechanical clamping or such like to the glazing support strip.

Another possibility for securing several stopping elements from displacement is the depositing of a security strip into the space between the glazing insert and the main box section of the window section. In the region of each stopping element, the security strip is perforated or interrupted. The thickness of the security strip is somewhat less than that of glazing blocks at the ends of the edges of the glazing insert, so that the function of the blocks, namely the point position of the glazing insert, is not impaired.

Finally, the or each stopping element may be in one piece with the support strip.

Thereby the stopping element can be extruded in the manufacture of the glazing support strip. A part of the stopping element merely has to be removed in the region of the glazing blocks. An arrangement of several individual stopping elements can be produced by a single breaking-, cutting-, or punching- out of partial areas of the extruded, continuous stopping element.

In order to enable the invention to be more readily understood, reference will now be made to the accompanying drawings, which illustrate diagrammatically and by way of example an embodiment thereof, and in which: Figure 1 is a section through a window of the prior art transversely to the longitudinal axis of the section.

Figure 2 is a view similar to Fig. 1 through a window according to the invention, Figure 3 is a view similar to Fig. 2 showing the window during installation, Figure 4 is a view similar to Fig. 2 while unlocking a stopping element from the inside of the window, Figure 5a is a perspective view of a glazing support strip with a stopping element in one piece therewith and, Figure 5b is a perspective view of a modified glazing support strip with a groove for the insertion of stopping elements.

Referring now to Fig. 1 there is shown a section through a conventional window in accordance with the prior art. The window comprises a main box section 5, which is formed of a plurality of chambers 23, 23', 23". On the inner side 24 of the window, i.e. the side of the window facing the interior of the building, is an L-shaped, box-section glazing rabbet 2 against which the window glass of a glazing insert 10 rests, with the interposition of an elastic glazing seal 17 which can be slid into or out of position. A part 27 of the main box section 5, protruding out to the outside 26 of the window is constructed with longitudinally extending guide grooves 6 and 7 which have surfaces running in planes parallel to the outside edge 11 of the glazing insert 10 which is supported at the ends of the outside edges 11 by glazing blocks 14. A glazing support strip 1, provided with an elastic glazing seal 13 on the outside of the window, has guide rails 21 and 22 engaged in the guide grooves 6 and 7, whereby in the process of engaging, the restoring forces of the glazing seals 13 and 17 had to be overcome. The representation of the assembly state in Fig. 3 shows how this engaging process of the glazing support strip 1 is carried out. Thereby the glazing support strip 1 is averted during assembly such that it assumes an inclined position against the edge 11 of the glazing insert 10, whereby firstly the guide rail 22 is pushed so deeply into the guide groove 7 that the guide rail 21 is guided past the upper shank of the groove 6 and finally can be engaged into the groove 6.Hereby, as can be seen from the illustration, the glazing support strip 1 is firstly averted according to arrow 19 by tilting, is then pressed in the direction of the arrow 20 against the glazing insert 10 and subsequently, as shown for example in Fig. 2, engaged with the guide rail 21 into the guide groove 6. Thereby, either the two glazing seals 13 and 17 are pushed powerfully together against their elastic restoring force, or installation takes place with the glazing seal 17 removed, whereby this has to be introduced or inserted later.

Figs. 2 to 4 show a window according to the invention, in which at least one stopping element 3 is inserted into the glazing support strip 1 between the latter and the glazing rabbet 2, and acts as a spacer. The glazing rabbet 2 in the region of the upper side 4 of the main box section 5 has a groove 8 parallel with the guide grooves 6 and 7 and the free end 9 of the stopping element 3 can engage in the groove 8, while being inclined to the edge 11 of the glazing insert 10, during the installation (Fig. 3) of the glazing support strip 1. However, in the supporting position of the glazing support strip 1 (Fig. 2), the free end 9 of the stopping element 3 stands with a small clearance opposite a wall region 12 of the glazing rabbet 2 between the groove 8 and the glazing seal 17 of the inside of the window.Furthermore, Figs. 2 to 4 show that a security strip 14' arranged betwen an outside edge 11 of the glazing insert 10 and the upper side of the main box section 5 is interrupted in the region of each stopping element 3. Through this it can be seen that stopping elements 3 are arranged so as to be unable to be displaced in the longitudinal direction of the window section, and, advantageously, are arranged at approximately equal distances along the glazing support strip 1.

As can be seen in particular from Figs. 5a and 5b, the stopping elements 3 are produced as plate-shaped shaped parts 18, 18' or 18" which are relatively thin in proportion to their length and width, of hard, resilient material such as high-quality synthetic material or metal. For example, the shaped part 18 represents a section of an extruded glazing bar as shown in broken lines.

The shaped parts 18' and 18", on the contrary, are produced as individual parts, e.g. as an injected part or sheet punched part. As can also be seen from Fig. 5b, the stopping elements 3 are inserted or pushed into the groove 16 of the glazing support strip 1 and, as desired, are welded or stuck or otherwise connected with the glazing support strip 1 in the groove. The stopping elements 3 each have a position support in the form of a thickening 15 or bead 15.With this position support 15 or bead 15' the stopping element 3 rests on the upper side 4 of the main box section 5 such that in the finished state of the window section with the glazing support strip 10 inserted in the stopping position (Fig. 2) it stands with a slight clearance opposite the wall region 12 of the glazing rabbet 2 between the groove 8 and the glazing seal 17, and thereby assumes its stopping function so as to be unlockable from the outside of the window 26.

In this position according to Fig. 2, it is now no longer possible from outside the window to push the glazing support strip 1 in the direction of the arrow 20 against the restoring forces of the glazing seals 13 and 17 and thereby loosen the glazing support strip 1 from the anchoring of the guide rail 21 in the guide groove 6.

However, if the glazing support strip is to be dismantled, then it is sufficient, as Fig. 4 shows, to introduce for example a flat steel blade 28 between the glazing rabbet 2 and the glazing insert 10, in order to press the free end 9 of the stopping element 3 resiliently against the upper side 4 of the main box section 5, so that it can dip into the groove 8 and release the unlocking movement in the direction of the arrow 20 of the glazing support strip 1. In order to facilitate this dismantling, if required the inner glazing seal 17 can have been removed previously.

The present window with its stopping element prevents in a very surprising and extremely uncomplicated manner undesired dismantling of the glazing strip from the outside of the window whereby the difficulties and disadvantages existing in the prior art are substantially overcome without any problems.

Claims (10)

1. Window frame section, wherein the section comprises a main box-section with a box section glazing rabbet joined thereto so as to form a substantially L-shaped section with the glazing rabbet intended to support a glazing insert with the interposition of an elastic glazing seal on the inside of the window, there being a glazing support strip provided for supporting the glazing insert with the interposition of another elastic glazing seal on the outside of the window, the main box-section being formed with two longitudinally extending guide grooves each having a surface running in a plane parallel to the outside edge of the glazing insert for receiving guide rails formed on the glazing support strip, whereby the guide rails can be engaged in and disengaged from said grooves by moving said glazing support strip against the restoring forces of said glazing seals, and wherein at least one stopping element is provided between the glazing support strip and the glazing rabbet in the region of the side of the main box section, the glazing rabbet being formed with a groove parallel to said guide grooves in the main box section, the arrangement being such that said stopping element acts as a spacer between said glazing support strip and said glazing rabbet to prevent movement of the glazing support strip towards said glazing rabbet and disengagement of said guide rails from said guide grooves, and such that said stopping element can be displaced out of its stopping position whereby one end of the stopping element can be engaged in the groove in the glazig rabbet to permit the glazing element to be moved against the restoring forces of said seal(s) to engage or disengage the guide rails of the glazing support strip in said guide grooves.

2. Window frame section as claimed in Claim 1, wherein several stopping elements are arranged at substantially equal distances along the glazing support strip.

3. Window frame section as claimed in Claim 1 or 2, wherein the or each stopping element is a plate-shaped shaped part which is relatively thin in proportion to its length and width and is made from hard resilient material.

4. Window frame section as claimed in any one of Claims 1 to 3, wherein the or each stopping element is constructed with a position support in the form of a thickening or bead.

5. Window frame section as claimed in any one of Claims 1 to 4, wherein the glazing support strip has a groove opening in the direction toward the glazing insert in the region of a plane between an edge of the glazing insert and said side of the main box section, into which groove the stopping element is pushed or inserted.

6. Window frame section as claimed in Claim 5, wherein the stopping element in the groove is secured against lateral displacement through interference from the outside of the window, by welding, sticking or the like.

7. Window frame section as claimed in many one of Claims 1 to 6, wherein a security strip is arranged between an outside edge of the glazing insert and the said side of the main box section, the security strip being interrupted or perforated in the region of each stopping element, and the height of the security strip being slightly less than the height of glazing blocks bearing the glazing insert at the ends of the outside edges of the glazing insert.

8. Window frame section as claimed in any one of Claims 1 to 7, wherein the or each stopping element is in one piece with the glazing support strip.

9. Window frame section as claimed in any one of Claims 1 to 8, wherein the main box section, glazing support strip and stopping member(s) are made of aluminium or plastics.

10. Window frame section substantially as hereinbefore described with reference to Figs.

2 to 4 of the accompanying drawings.