IE950227A1 - Burglarproof assembly consisting of two sections - Google Patents

Abstract

Burglarproof section assembly with two interacting sections, in which the first section comprises a base with a first, inside leg projecting therefrom, and a second, outside leg running parallel thereto, while the second, connected section comprises a base with a top leg, from which an intermediate leg projects, the sections being made by extrusion from aluminium, and the top leg being extended past the intermediate leg.

Description

LODGED -J'llltL The invention relates to an assembly consisting of and a second section, cooperating with each other, for shutting off the space between a fixed construction part (in particular, frame) and a panel which can be swung 5 relative thereto (in particular, door or window), in which the first section, for fixing on the fixed part, comprises a base with a first, inside leg projecting therefrom and situated near the panel when the unit is fitted, and a second, outside leg which is parallel thereto, while the 10 second section, for fixing on the panel, comprises a base having at the end an upgoing part which continues into a top leg situated above and in line with the base, from which top leg an intermediate leg, situated between the inside and outside legs of the first section, projects when 15 the unit is fitted and the panel is closed.

Such an assembly is known in practice.

The sections used in such a known assembly are made by rolling from sheet material. This operation is labourintensive and expensive, in particular because a subsequent 20 surface treatment is essential. The rolling produces permanent stresses in the material, making it difficult for the sections to be fitted straight and properly aligned along, for example, frame and door, and making it virtually impossible to adhere to narrow tolerances, which are 25 necessary, however, partly due to the fact that a swinging panel also undergoes a movement relative to the fixed construction part. The configuration of the known sections requires a large quantity of sheet material, and is thus heavy.

A great drawback of the known assembly is also that, if forces are exerted, for example by means of a jemmy or chisel, at a particular point between the section and the substructure on which it is fixed, these forces will be transmitted over the full length of the section to the substructure, so that the exertion of a wrenching force at a particular point of the section makes it possible to wrench away the section not just locally, but over a considerable distance.

OPEN TO PUBLIC INSPECTION UNDER SECTION 28 AND RULE 23 JNL. No.............OF. ttli tL_.EO5^ > /cafe This is due to the fact that when such forces are exerted, the sheet material does not bend outwards locally, but transmits the exerted forces to the remainder of the section.

The object of the invention is to provide an assembly with considerably better characteristics. This is achieved according to the invention through the fact that the sections are made by extrusion from aluminium, and the top leg is extended past the intermediate leg over such a distance that the end edge of the top leg lies essentially above the outside leg of the first section when the unit is fitted and the panel is closed.

The manufacture by extrusion from aluminium results in a much cheaper process, a much lower weight (thus lower transport costs and easier transportation by the average DIY person), while aluminium also has the great advantage of being tough and flexible: when wrenching forces are exerted at a certain point between substructure and section, the section will bend outwards only at that point, and will remain intact over the remainder of the length. When force is exerted between the cooperating parts of the unit, the same effect occurs: the material will bend outwards only where an attempt is made to force the unit, and will remain intact over the remainder of the length.

The proposed configuration results in a high degree of protection of the vulnerable space between panel and fixed construction part. In order to reach this space, it is necessary to force several parts in succession over a considerable length, which is extremely time-consuming and will very soon lead to a burglar giving up his attempts. Moreover, the intermediate leg has become virtually inaccessible, in particular because extending the top leg means that there is virtually no space left for placing a jemmy between the masonry and the end of the top leg.

An additional advantage of the proposed configuration is that the fixing screws are largely inaccessible.

Preferred embodiments of the invention are described in claims 2 to 5.

The invention is explained with reference to the drawing, in which: Figure l is a cross-section through a first embodiment of the section assembly according to the invention ; Figure 2 is a corresponding cross-section after an unsuccessful attempt to force it; Figure 3 is a cross-section through a second embodiment of the section assembly according to the invention; and Figures 4, 5 and 6 are corresponding cross-sections which show the various deformation situations when the assembly is forced.

The section assembly shown in Figures 1 and 2, indicated in its entirety by reference numeral 2, comprises a first section 4, fitted on a frame 6, and a second section 8, fitted on a door 12 which is accommodated in said frame and swings outwards in the direction of the arrow 10. The section 4 comprises a base 14, which is fixed on the frame 6 by means of suitable screws 16. Two upright legs extend from the base 14, a first, inside leg 18, situated near the door 12, and a second, outside leg 20, situated at a distance therefrom. Due to the fact that the fixing screws 16 can be fitted between the inside leg 18 and the outside leg 20, it is possible also to use the section assembly in those cases where the distance between the outside edge 6a of the frame 6 and the above-ground masonry 22 is only small.

A longitudinal rib 24 preferably projects from the base 14 of the section 4, which rib penetrates into the material of the frame when the section is being screwed down on the frame, and thereby contributes to the strength of the fastening.

A similar rib, indicated by 26, is disposed on the right end of the base 28 of the second section 8. Said base 28, which is fixed by screws 30 on the external face of the door 12, continues in an upgoing part 32, where it merges into a top leg 34. The intermediate leg 36, which lies between the inside leg 18 and the outside leg 20 when the unit is fitted and the door is shut, projects from this top leg 34. The critical space 38 present between the frame 6 and the door 12 has thus become inaccessible.

Thus far the assembly according to the invention corresponds to what is known from practice, the only difference being that the assembly according to the invention takes up less space in the transverse direction, i.e. in the direction between the frame edge 6a and the above-ground masonry 22, than the assembly which is known per se, while making it of extruded aluminium - as the figure shows - offers the possibility of forming a chamber 40 in the intermediate leg 36 for the accommodation of a draught excluder brush strip 42.

Where in the assembly according to the prior art the intermediate leg 36 is readily accessible, this is not the case with the assembly according to the invention, due to the fact that according to the invention the top leg 34 is extended past the intermediate leg 36 by an extension piece 44, over such a distance that when the door 12 is closed the end edge 44a thereof lies above the outside leg 20. This not only makes it impossible to act directly on the intermediate leg 36, but it also ensures that the distance 46 remaining between the masonry 22 and said end edge 44a has become so small that it is virtually impossible now to insert any tool there.

Finally, it is also pointed out that the top leg 34 is provided with a constriction 50, which in fact forms a weakness, just before the intermediate leg 36.

Assuming that a burglar still manages to place a tool, such as a jemmy, in the space 46 between the end edge 44a and the above-ground masonry 22, by means of which tool a force acting in the direction of the arrow 52 can be exerted, the situation shown in Figure 2 arises: the part 44 bends about the constriction 50, with the result that the end 36a of the intermediate leg 36 runs up against the leg 20. As a result of the toughness of the material used aluminium - such bending will only occur locally, namely where the force is applied. The burglar is thus forced to carry out such a wrenching operation repeatedly, at a number of adjacent points, which is, of course, timeconsuming.

However, this produces no result whatsoever, since - as can be seen from Figure 2 - the fact that the end 36a of the leg 36 runs up against the leg 20 means that the space 37 between the bent leg 36 and the upright leg 18 is completely shut off, with the result that the critical space 38 between frame 6 and door 12 has also become inaccessible.

Although excellent protection is already obtained with the embodiment described above, the latter can be improved even further by providing an additional leg on the top part 34 of the second section 3. This results in the embodiment shown in Figure 3. The various deformation stages thereof are shown in Figures 4-6.

Those parts of said second embodiment corresponding to parts of the embodiment described above are indicated by the same reference numeral as that, used above, but increased by 100.

This section assembly according to the second embodiment, indicated in its entirety by the reference numeral 102, has a first section 104, the frame 106, and a second section 108 on the outward swinging door 112. The base 114 of the section 104 is fixed by screws 116 on the frame 106. The upright legs 118 and 120 project from the base 114. Here again, the fixing screws 116 are disposed between the inside leg 118 and the outside leg 120. The base 114 of the section 104 has the longitudinal rib 124, and a similar rib 126 is disposed at the right end of the base 128 of the second section 108. Said base 128 is fixed on the door 112 by means of screws 130 and continues into an upgoing part 132, which merges into the top leg 134. The intermediate leg 136 projects from said top leg 134.

In the case of this embodiment a second intermediate leg 148 also projects from the top leg 134, into the space between the upgoing part 132 of the section 108 and the inside leg 118. The facing surfaces of said intermediate leg 148 and the inside leg 118 are preferably provided with surface teeth 148a, 118a respectively. Their function will become clear from the following.

The top leg 134 is provided with a constriction 150, in fact presenting a weakening, just before the intermediate leg 136. If anyone succeeds in placing a jemmy in the space 146 between the end edge 144a and the aboveground masonry 122, and exerting a force active in the direction of the arrow 152, in the first instance: the situation shown in Figure 4 arises: the part 144 bends about the constriction 150, so that the end 136a of the intermediate leg 136 runs up against the leg 120. Here again, said bending will occur only locally, namely where the force is exerted, and the burglar is forced to carry out such a forcing operation repeatedly, at a number of adjacent points, which is, of course, very time-consuming.

If, through exerting very great forces, the burglar now did manage to force the end 136a of the intermediate leg 136 past the end 120a of the outside leg 120, the situation shown in Figure 5 has arisen. The critical space 138 between frame and door is still inaccessible. The burglar now has to exert a force in the direction of the arrow 154 in Figure 5, again over a number of adjacent points, which results in the top leg 134 bending relative to the upgoing part 132 about the transition 156 between said parts. The second intermediate leg 148 will then, however, run up against inside leg 118, and an extremely great force will be necessary to force these parts past each other, in particular through the presence of the teeth 148a, 118a respectively. It must be remembered that here again, owing to the toughness of the material used, the exertion of a force on the top part 134, leads only to a local deformation, and that here again it is necessary to carry out the forcing operation at a large number of adjacent points, in order to force the second intermediate leg 148 past the outside leg 118. Of course, if a burglar has sufficient time at his disposal and can continue undisturbed, he will succeed, but this will be an extremely rare occurrence in practice.

Claims (6)

1. Assembly consisting of a first and a second section, cooperating with each other, for shutting off the space between a fixed construction part (in particular, frame) and a panel which can be swung relative thereto (in particular, door or window), in which the first section, for fixing on the fixed part, comprises a base with a first, inside leg projecting therefrom and situated near the panel when the unit is fitted, and a second, outside leg which is parallel thereto, while the second section, for fixing on the panel, comprises a base having at the end an upgoing part which continues into a top leg situated above and in line with the base, from which top leg an intermediate leg, situated between the inside and outside legs of the first section, projects when the unit is fitted and the panel is closed, characterized in that the sections are made by extrusion from aluminium, and the top leg is extended past the intermediate leg over such a distance that the end edge of the top leg lies essentially above the outside leg of the first section when the unit is fitted and the panel is closed.

2. Assembly according to claim 1, characterized in that a second intermediate leg, situated between the first intermediate leg and the upgoing section part, projects from the top leg.

3. Assembly according to claim 1, 2, characterized in that a constriction is formed in the top leg, immediately before the first intermediate leg.

4. Assembly according to claim 2, 3, characterized in that the facing surfaces of the inside leg of the first section and the second intermediate leg are provided with teeth facing each other.

5. Assembly according to claims 1-4, characterized in that at least one rib projects outwardly from each base contact face, over a short distance until beyond said face. -8

6. An assembly substantially as hereinbefore described with reference to the accompanying drawings.