IE950226A1 - Burglarproof assembly consisting of two sections. - Google Patents

Abstract

Burglarproof section assembly with interacting sections, in which the sections are made by extrusion from aluminium, the first section comprising a base with a first leg projecting at right angles thereto, and a second leg which lies at right angles thereto, and the end of which is flanged in the form of a third leg in the direction of the first leg, and the second section comprising a base with a fourth leg extending therefrom, in such a way that when the two sections are fitted and when the panel is swung shut, the end edge of the fourth leg lies essentially opposite the end edge of the third leg.

Description

LODGED The invention relates to an assembly comprising of a first and a second section, co-operating with each other, for protecting the space between a fixed construction part (in particular, frame) and a panel which swings relative thereto (in particular, door or window).

Such an assembly is known per se; see, for example, FR-A-2,590,928 and EP-B-389,532.

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 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 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, when 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.

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 properties. This is achieved according to the invention through the fact that: the sections are made by extrusion from aluminium; the first section comprises a base, having at the first end thereof a first leg projecting essentially at right angles thereto, and at the second end a second leg which also projects at right angles thereto until past the end edge of the first leg, and the end of which second leg is flanged in the form of a third leg in the direction of the first leg; and the second section comprises a base, having at one end a fourth leg extending out therefrom; the above being in such a configuration that, when the two sections are fitted and the panel is rotated to the closed position, the end edge of the fourth leg lies essentially opposite the end edge of the third leg.

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 interacting parts of the assembly, 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 the attempt.

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

A preferred embodiment, intended for use in the case of an inward swinging panel, is described in claim 2.

An embodiment intended for use in an outward swinging panel is described in claim 3.

Preferred embodiments of the assembly are described in claims 4 to 6.

The invention is explained with reference to the drawing, in which: Figure 1 shows a cross-section of an assembly intended for use in an inward swinging door; Figures 2 to 5 show in a similar cross-section the different stages of local deformation of the assembly according to the invention when an attempt is made to force it; Figure 6 shows a cross-section through an assembly according to the invention intended for use in an outward swinging door.

Corresponding parts are indicated in the figures by identical reference numbers.

In Figures 1 to 5 a frame is indicated by 2, and an inward swinging door, co-operating with said frame, is indicated by 4, which door in the closed position rests by way of the draught excluder strip 6 against said frame. The critical space 8 between frame 2 and door 4 is protected by the section unit according to the invention, indicated in its entirety by 10.

This section assembly consists of two sections extruded from aluminium. The first, indicated by 12, is fixed to the frame 2, and the second, indicated by 14, is fixed to the door 4. The first section 12 comprises a base 16, which has at the first end 16a thereof a projecting first leg 18. From the second end 16b of the base 16 projects a second leg 20, the end of which is flanged at right angles, in order to form a third leg 22. Near the first end 16a a constriction 24 is formed in the base 16, while near the second end 16b a short rib 26 projects from the base. When the section 12 is being fixed on the frame 2 by means of the screws 28, said rib 26 will penetrate into the frame and thereby provide additional protection against wrenching away of the section.

The second section 14 also has a base, indicated by 30, and a fourth leg 32 projects from said base. The base of this section is also provided with a projecting rib 34, which penetrates into the material of the door when the section 14 is being fixed on the door 4 by means of the screws 36, thereby giving additional protection against forcing.

As can be seen from the figure, the configuration of the whole unit is such that, when it is fitted and when the door is closed, the end edge of the leg 22 lies opposite the end edge of the leg 32, leaving clear a small space between them.

As the figure shows, the base of the two sections has not the same thickness all along the length: the thickness of the base 16 increases from the end 16a towards the end 16b, while the thickness of the base 30 increases from the end 30a towards the end 30b. This considerably facilitates the drilling of the necessary fixing holes.

The way in which the critical space 8 between frame 2 and door 4 is protected can be seen clearly from Figures 2 to 5.

In order to reach this space 8, the distance 40 between the end edges 32a and 32b will have to be increased first of all over a great enough distance to allow through a jemmy at several points. As a result of the toughness of the section material, this forcing will have to be carried out repeatedly at a number of points. The leg 20 of the section 12 will bend outwards relative to the base 16 at the transition point 42 between these parts. Figure 2 shows the first phase of this process, and Figure 3 the second phase thereof. This will have taken a burglar a long time already, partly due to the fact that, as stated above, the forcing has to be carried out at a number of adjacent points. Once the situation shown in Fig. 3 has been reached, the space between frame 2 and door 4 is still not accessible: it is protected by the combination of the leg 18 and the base 30 of the section 14. All that a burglar can then do is to try and force away the leg 32 of the section 14, in order to gain access to this critical space, and again this is very time-consuming. Here again, forcing will merely result in bending outwards at only one particular point, so that only repeated forcing at adjacent points will result in the situation shown in Figure 4, in which the space between the sections is accessible with a j emmy. - 5 Even then, the critical space 8 between frame and door is still not accessible, for the leg 18 is still in the way. Bending the leg outwards in the direction of the base 30 of the section 14 is pointless, because this merely shuts off access, so that the only way to achieve anything is to try and force the leg 18 away from the base 30. Here, however, the constriction 24 of the base 16 will ensure that the narrowed end of said base, together with the leg 18, moves into the position shown in Figure 5, with the result that access to the space between frame 2 and door 4 is definitively shut off.

It will be clear from the above that the section unit according to the invention provides very satisfactory protection against forcing.

As already stated, the embodiment described above is intended for use for inward swinging doors or panels. Using the same first section 12 to that which has been described above, but with a modified second section, with a configuration such as that shown in Figure 6, produces an assembly according to the invention for securing outward swinging panels, in particular doors. In Figure 6 the frame is indicated by 2', and the door, which swings outwards in the direction of the arrow 60, is indicated by 4'. The first section is indicated by 12', and the parts thereof are indicated by the same reference numbers as those used in Figures 1 to 5, provided with an apostrophe ('). The second section 62 consists of the base 64, fixed on the door 4', the narrow end 6' of which base merges into a projecting leg, indicated in its entirety by 68. Said leg 68 consists of a first part 68a, which forms an obtuse angle with the base 64, a second part 68b, which lies essentially parallel to the leg 18' of the first section 12' when the assembly is fitted and the door is shut, and a third part 68c, the end 70 of which lies opposite the end 22a' of the leg 22' of the first section 12' when the door 4' is closed. The transitions between the various parts are preferably slightly constricted, as indicated by 72 and 74.

It will be clear that with this unit also a burglar will be faced with the problem of only a local deformation occurring when the assembly is forced, and a number of barriers having to be overcome before the critical space 76 between frame 2' and door 4' has become accessible. If he does succeed in bending out the part 68c of the leg 68 at a number of points, he still has to gain access to the space between the part 68b and the leg 18'. Placing a jemmy between these two parts will result in a situation corresponding to that shown in Figure 5, i.e. bending over of the leg 18’ by way of the constriction 24', with the result that the space 76 has become definitively inaccessible.

Claims (7)

1. Assembly comprising a first and a second section, co-operating with each other, for protecting the space between a fixed construction part (in particular frame) and a panel which is rotatable relative thereto (in particular, door or window) characterized in that: the sections are made by extrusion from aluminium; the first section comprises a base, having at the first end thereof a first leg projecting essentially at right angles thereto, and at the second end a second leg which also projects at right angles thereto until past the end edge of the first leg, and the end of which second leg is flanged in the form of a third leg in the direction of the first leg; and the second section comprises a base, having at one end a fourth leg extending out therefrom; the above being in such a configuration that when the two sections are fitted and the panel is swung to the closed position, the end edge of the fourth leg lies essentially opposite the end edge of the third leg.

2. Assembly according to claim 1, intended for use in the case of an inward swinging panel characterized in that the fourth leg lies essentially at right angles to the base of the second section (Figs. 1-5).

3. Assembly according to claim 1, intended for use in the case of an outward swinging panel characterized in that the fourth leg, extending from the base of the second section, is made up of a first part which forms an obtuse angle with the base and continues into a second part, which lies essentially parallel to the first leg when the panel is fitted and swung shut, and which merges into a third part which in this position lies with the end edge essentially opposite the end edge of the fourth leg (Fig. 6).

4. Assembly according to claims 1-3, characterized in that at least one rib extends from the base contact face, projecting over a short distance until past said face.

5. Assembly according to claims 1-4, characterized in that the thickness of the base of the first section increases from the first end thereof towards the second end thereof. 5

6. Assembly according to claims 1-5, characterized in that a constriction is formed in the base of the first section, near the first end thereof.

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