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(11) | EP 0 727 558 A1 |
| (12) | EUROPEAN PATENT APPLICATION |
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| (54) | Security top for roller shutters |
| (57) The are used to make it more difficult to lift a roller shutter from outside a dwelling,
and are made up of a flexible strap attached to the shutter roller and by a profile
to support the upper slat of the shutter, having a plastic coupling element (2) injected
upon the end of the flat surfaced strap (1), having at its lower end two cylindrically
shaped, partially cut downwardly half bridges (4), placed against the half bridges
(5) practised into the profile (6) downwardly placed, having been internally drilled
into said half bridges (4) and (5) orifices into which is inserted a fastener (7)
also made of plastic material, which determines the joint between the profile (6)
and the strap (1), making up an assembly that prevent slat wear and marking. |
OBJECT OF THE INVENTION
[0001] The object of this invention is a security top for roller shutters used to make it more difficult to lift the roller shutter from the outside, thus preventing the access of strangers to the premises, which has, as a specific feature, the manufacture of part of its structure with plastic material in order to avoid marking and wear of the roller slats due to contact with the profile and strap that constitute the security top.
[0002] The assembly of the elements constituting the top is furthermore optimized through the forming of a plastic part on which are defined the shapes of two of its elements, being one of them the fastener that is configured in the position prior to the coupling together of the parts that make up the security top.
BACKGROUND OF THE INVENTION
[0003] The roller shutter security tops used up to know are essentially fitted with a flexible strap associated through one of its ends to the tubular axis of the roller shutter through the use of lugs that are fitted into the shaft openings prepared for that purpose and having at its other end a housing inside which a wing of the profile used to support the upper slat of the roller shutter turns freely.
[0004] The strap is made of extremely flexible metallic material that allows it to be bent when the roller shutter remains wound upon its tubular shaft.
[0005] Whenever the roller shutter is fully unwound the upper slat of the shutter remains attached to the tubular shaft through the strap. In this situation, whenever an attempt is made to lift the shutter from the outside by lifting its lower slat, the upper slat effects a pushing force against the profile, which determines in its upward displacement the curving of the strap in the same direction, preventing the shutter slats from moving towards the roller, avoiding their winding movement and, consequently, making it impossible for the roller shutter to be lifted.
[0006] The use of metallic profiles and straps determines that, on winding a roller shutter with slats made of plastic or metallic material, said slats are marked upon entering in contact with the profile and the strap, causing the slats to suffer marking and wear.
DESCRIPTION OF THE INVENTION
[0007] This invention consists on a roller shutter security top which objective is to prevent the wear of the slats through the adoption of a profile made of plastic material attachable to the coupling plastic element injected upon the strap, being both parts configured in such a way that they may be joined together by a fastener moulded on the side of the profile.
[0008] The coupling element consists on a flat surface injected on the two surfaces of the lower strap end, presenting said coupling element two cylindrically shaped and partially cut half bridges to be located against the half bridges fitted to the lower profile and through which is introduced the fastener that keeps the strap and profiled joined together.
[0009] The lower profile has the same side section employed in other models, which allows the upper slat to be supported as well as its turning movement, being partially cut to reduce weight, being upwardly fitted with partially cut half bridges, as previously described.
[0010] The profile is obtained through injection in a mould that determines a part in which is located the profile and the fastener itself, arranged in the lateral position and across the openings of the half bridges of the profile, so that whenever the assembly between the profile and the strap coupling is effected by confronting the half bridges of both parts, it is only necessary to knock on the end of the fastener, loosening it from the profile and introducing it through the half bridges of both parts.
DESCRIPTION OF THE DRAWINGS
[0011] In order to complement the description being effected and with the purpose of aiding a better and easier understanding of the features of the invention, this patent specification is accompanied, as integral part thereof, of a set of drawings where, with an illustrative but never limitative character the following has been duly represented:
Figure 1. Represents a frontal view of the strap and profile coupling element.
Figure 2. Represents a frontal view of the part obtained through injection and made up of profile and fastener.
Figure 3. Represents a view of the roller shutter security top.
PREFERRED EXECUTION OF THE INVENTION
[0012] As may be observed in the figures, the roller shutter security top consists of a strap (1) to which is injected a coupling plastic element (2) that is attached to the plastic profile (3) using a fastener (4), being the profile (3) the element from which the upper shutter slat hangs, thus achieving an assembly that does not mark or damage the slats upon which falls the profile (3) whenever the shutter is wound up.
[0013] The plastic coupling element (2) consists of a flat surface (3) that has on its lower side two cylindrically shaped, partially cut half bridges (4), placed against the half bridges built into the lower profile (6), having said half bridges (4) and (5) been previously drilled to enable the insertion of a fastener (7) also made of plastic material.
[0014] The profile (6) and fastener (7) are configured by injection in the same part obtained through moulding, so that the fastener is arranged laterally against the openings drilled into the half bridges (5), being the coupling (3) element associated to the profile (6) through the fastener (7) that is pushed inside the half bridges after bring detached from the profile (6).
[0015] It is not considered necessary to extend this description any further to enable any expert in the art to understand the scope of the invention and the advantages derived therefrom.
1. Roller shutter security top of the type used to prevent shutters being lifted from
outside a dwelling, fundamentally made up of a flexible strap associated to the roller
of the shutter and a profile to support the upper slat of the shutter, essentially
characterized because it has a plastic coupling element (2) injected upon the end
of the flat surfaced strap (1), with two lower cylindrically shaped and partially
cut half bridges downwardly arranged, located against the half bridges (5) fitted
to the profile (6) arranged downwardly, having been internally drilled into said half
bridges (4) and (5) orifices into which is introduced a fastener (7) also made of
plastic material, which determines the joint between profile (6) and strap (1), constituting
an assembly that prevents slat wear and marking.
2. Roller shutter security top as per the prior claim, characterized because the profile
(6) and the fastener (7) are configured through injection in a single part made through
moulding, so that the fastener is arranged laterally and placed against the orifices
drilled into the half bridges (5) of cylindrical shape and partially cut, being the
coupling element (3) attached upon the profile (6) by the fastener (7) that is pushed
inside the half bridges in the coupling position, becoming unattached from the profile
(6) with which it previously constituted a single part.
3. Roller shutter security top.