DK154717B - ARMABLE ROLLERS - Google Patents

Description

The present invention relates to a reinforceable roller grille of the kind specified in the preamble of claim 1.

Scroll guards of this kind are widely used for theft of especially display windows in stores such as gold and silversmith shops and radio and TV shops. Often, the roller grilles are combined with other types of anti-theft devices, eg. electronic alarm systems, which are activated at the breaking of the window pane and which may possibly cause the roll-down grating if this is not already done e.g. by an oblivion has been rolled down.

Normally, the roller grilles are not rolled down during business hours, but at closing time the roller grille is rolled down and the e-lefctronic burglar alarm is initiated. Optionally, initiating the electronic alarm system at the store's closing time may result in automatic rolling down of the roller grille. It should be mentioned that the very primary purpose of the roller grille is to make it difficult to break through the glass facade so much that the police can reach before the grille is broken, ie. The mere presence of a roller grille has a great crime-prevention effect.

SE-FS 425.260 discloses a rollable guard grille consisting of horizontal profile rails of trimmable material. The profile rails have two longitudinal holding grooves in which engraved U or Z-shaped joints of hardened steel, ie. of non-cutable material. The parallel parts of the joints extend in said holding grooves and thus also form spacers between the individual joints in the grating. This known roller grille is consequently straightforward and expensive. In addition, it has a marked weakness, since devant profile rails are easy to pierce at the transition between the individual joints, where the cutable material of the profile rails is not steel reinforced.

Furthermore, from Swedish pattern registrations Nos. 28 866 and 28 867, roller grids are known consisting of a number of horizontal profile rails of aluminum which, as with the above-mentioned roller roller grids, have longitudinal holding grooves in which flat, curved joints engage with cylindrical parts at opposite ends. of the joints.

The curved joints are arranged at varying distances apparently by means of cylindrical spacers of similarly different lengths inserted into the holding grooves. These known roller guitars apparently consist entirely of aluminum, ie. is without special protection against over-cutting or cutting of the grids.

The invention has for its object to provide a roller grille of the kind mentioned at the outset and which can be easily and safely armed as required.

The roller grille according to the invention is peculiar in that the profile rails have a longitudinal cavity intended to accommodate a reinforcement extending preferably along the entire profile rail. Hereby it is achieved that a roller grille of the known and popular design can be simply and securely reinforced by the application of hardened steel rods internally in said cavity, ie. without it being recognized by immediate consideration the scroll grid. Which is considered too significant on the basis of a crime-preventive considering the general criminal-preventive effect.

In the claim 2, an extremely suitable and safe reinforcement of the profile grilles of the roller grilles is obtained, as the attempt to saw them will be very difficult as the inserted reinforcing bar will roll when attacked with a saw blade.

The other requirements specify suitable options for further reinforcing the roller grille using grating joints and hardened steel spacers.

All in all, a roller grille is indicated which can be reinforced as desired or needed with the corresponding possibility of obtaining a premium reduction by taking out insurance, and even without a visibly sharpened crime prevention attitude, which is considered extraordinarily strong. important.

The invention is explained in the following in connection with the drawing, in which: -

FIG. 1 is a side view - partly in section - of an embodiment of a roller grille according to the invention; FIG. 2 is a perspective view of a grid system according to the invention; FIG. Fig. 3 is a side elevational view, partly in section, showing a preferred embodiment of a profile rail with reinforcing cavity or inlaid reinforcing bar for the grating according to the invention; 4 is a side elevational view of another embodiment of a roller grille for the roller grille according to the invention; and FIG. 5 shows that in FIG. 4 is a front view of the part of a spacer to the roller grid.

The FIG. 1, the grille shown in Figure 1 is mounted or suspended on removable pipe roller 2 and guided laterally in specially designed guide rails 4. The grille (Fig. 2) consists of horizontal profile rails 8 extruded in aluminum. At opposite longitudinal edges, the profile rail 8 (Fig. 3) is formed with outwardly opened, sub-cylindrical holding grooves 10, in which corresponding cylindrical connecting parts 12 are inserted at opposite ends of curved lattice joints 14. Between the individual grid links 14 are inserted cylindrical spacers of different length depending on the mesh size of the grid mat (Fig. 2). The 1, 2 and 3, the grating link 14 is cut to a suitable width by a massive aluminum rail having similar profiling, the grating link 14 being of different lengths corresponding to the width of the aluminum rail from which the joints are cut.

The horizontal profile rails 8 are extruded behind the curved front face with a through-going cylindrical cavity 16 intended to receive a likewise cylindrical reinforcing bar 18 of hardened steel. The reinforcing bar 18 is slightly smaller in diameter than the cavity 16, so that the reinforcing bar 18 is rollable internally within the cavity 16.

In FIG. 4 and 5 are shown a narrow curved lattice joint 20 made of hardened steel, the opposing cylindrical connecting members 22 thereof being rolled up. Below in FIG. 4 and 5, a tubular spacer 24 of tempered steel is shown. This may consist of a rolled open pipe sleeve, or of a plain thin walled pipe piece which, after fitting, is cured.

It will be seen that the roller grille according to the invention can be adapted according to almost any desire with regard to. the degree of reinforcement and even without the appearance of the roller grille will change noticeably from the current and popular appearance.

Claims (5)

1. Reinforced roller grilles, in particular for burglar-proofing of shop windows, and of the kind in which a roll-up grating mat consists of a number of spaced apart spaced-apart parallel profile rails (8) having, at opposite long sides, open recessed holding grooves (10) , opposite end portions of a plurality of lattice joints (14) are pivotally embedded, with suitable spacers inserted between the lattice joints (14), characterized in that the profile rails (8) have a longitudinal cavity (16), which is intended to receive a reinforcement (18) extending along the entire profile rail (8). Roller grating according to claim 1, characterized in that the longitudinal cavity of the profile rails is constituted by a closed cylindrical channel (16), in which a similarly cylindrical reinforcing bar (18) of tempered steel is arranged rollably. Roller according to claim 1, characterized in that the grating joints (20) and / or spacers (24) consist of non-cutable material such as hardened steel. Roller grating according to claim 3, characterized in that the grating joints (20) are formed as narrow, flat curved joints with coiled, tubular end portions intended for pivotal embedding in said holding groove (10). A roller grille according to claim 3, characterized in that the spacers are formed as open pipe bushes (24).