CZ10706U1 - Safety lock shield door, especially exterior - Google Patents

Description

Security door lock, especially external

Technical field

The technical solution relates to the construction of the door security shield, especially its external sides against the forced entry of unwanted persons into the interior of apartments, offices, storage rooms, buildings and similar areas.

BACKGROUND OF THE INVENTION

A number of locking means are currently used for the above-mentioned interior spaces in order to lock them and make them inaccessible to foreign persons. From the simplest and cheapest padlocks to complex and expensive door locks. Some design solutions, in addition to the requirements for the most reliable and high-quality function of unlocking and closing, are also designed with a view to securing them against damage or destruction. Essentially, they are so-called security locks which are designed to prevent or eliminate breakage of the lock cylinder. Door shields, which are made of stainless steel, are also adapted to be as resistant as possible to any damage or complete destruction.

These known design solutions inherently meet the functional requirements to which they are put. However, there are some drawbacks in terms of manufacturing technologies and in some cases of more complex designs. In particular, the essential drawbacks lie in the provision of security safeguards to ensure the integrity of the door shields and the said lock cylinder.

The essence of the technical solution

Said drawbacks and further improvements of the design solutions are provided by the security door lock shield, especially the outer according to this technical solution. It is based on the fact that on the reverse side of the shield, a first groove is formed at the points above the lock insert and a second groove at the points below the lock insert. In addition to the lock insert, in the case of the right fitting on the left and in the case of the left fitting on the right, a further third groove is also formed on the back of the shield. This third groove intersects the first and second grooves and cylindrical recesses are formed at their crossing points. These are also formed at the ends of the first and second grooves adjacent the lock cylinder. In the first, second and third grooves, the carbide means, for example prisms, are fixed and the carbide means, for example rollers, in the cylindrical recesses.

Any of the grooves may be expanded and provided with another array of carbide means. Furthermore, the outer side of all grooves and hard metal chips is covered with a cover sheet. In addition, carbide means, for example discs, are mounted under the fastening screws located at the points of the lock insert.

The advantage of this design of the gable above all is securing the door against its unwanted forcible opening by foreign and unauthorized persons. By providing the metal shield with carbide means it becomes more resistant to its destruction. This is also the case with the use of appropriate mechanical means, such as cutters, drills, and the like, where the time required to destroy and overcome the shield is far greater than that of the present embodiments. It is these two moments that presuppose the possible detection of the abuser. This outer shield together with the inner shield forms a security fitting which is particularly suitable for security doors. It is also important that the design of this shield is very close to the requirements of the safety classes of European standards.

-1 CZ 10706 Ul

BRIEF DESCRIPTION OF THE DRAWINGS

An example of an arrangement of a lock door shield is shown in the accompanying drawings, in which Fig. 1 is a front elevation view of the backing sheet with a partial view of the cover sheet, Fig. 2 is a section at A-A shield;

Examples of technical solution

The door outer shield J is provided with a recess 2 in which the lock cylinder 3 is mounted. At the points above the lock cylinder 3, a first groove 4 is formed on the reverse side of the shield 1 and a second second groove 4 'is formed on the reverse side of the shield. . The first and second grooves 4, 4 'are in this case formed in a horizontal plane and parallel. However, they may also be inclined differently and may be parallel or possibly parallel. In addition to the lock insert 3, in the case of the right fitting, to the left, in the case of the left fitting to the right, a further third groove 4 is also formed on the reverse side of the shield 1, in this case perpendicular to both grooves 4, 4 '. This third groove 4 can also be inclined differently as desired. Cylindrical recesses 5 are formed at the intersections of the first, second and third grooves 4, 4 and 4. Further cylindrical recesses 5 'are formed at the ends of the first and second grooves 4, 4' adjacent to the lock cylinder 3. the third groove 4, 4 ', 4 accommodates carbide means, for example, chips 6 and in cylindrical recesses 5, 5' carbide means, for example rollers 7. The outer side of all grooves 4, 4 ', 4 and carbide chips 6 is covered by a cover sheet 8 in the shape of these grooves 4, 4 ', 4, as in this case. In addition, other carbide means, for example discs 9, are located below the fastening screws 10, which are located in the lower, i.e., lock, part of the shield J.

Any of the grooves 4, 4 ', 4 may be expanded and may be provided with another row of carbide means, i.e., prisms 6.

The first, second and third grooves 4, 4 ' and 4 are provided in the shield by a conventional milling technique, optionally forged and the like. Their depth is selected in dependence on the thickness of the shield i and the thickness of the carbide means used. The technology of production of cylindrical recesses 5, 5 'is also chosen. Before placing the carbide chips 6, the walls of the first, second and third grooves 4, 4 'and 4 are provided with a suitable adhesive, for example EPOXY 1200. The thus prepared first, second and third grooves 4, 4' and 4 incorporate the carbide chips 6.

Similarly, cylindrical recesses 5, 5 'are provided in which the carbide rollers 7 are inserted. Then, the back side of the shield 1 is covered by a covering sheet 8 at all the grooves 4, 4', 4 after the adhesive has cured. especially to their outside.

Claims (4)

PROTECTION REQUIREMENTS 35 1. A security door lock shield, in particular an exterior door, provided with a lock insert, characterized in that a first groove (4) is formed on the reverse side of the shield (1) above the lock insert (3) and below the lock insert (3) ) a second groove (4 '), while a third groove (4) intersecting the first groove (4) is also formed on the back side of the shield (1) next to the lock insert (3) in the case of the right fitting on the left and in the case of the left fitting on the right 40 and a second groove (4, 4 ') and at their crossing points and at the ends of the first and second grooves (4, 4') adjacent the lock cylinder (3), cylindrical recesses (5, 5 ') are formed, wherein in the first in the second and third grooves (4, 4 ', 4) are fixed carbide means, for example prisms (6) and in the counterbores (5, 5'), carbide means, for example rollers (7). -2EN 10706 Ul The security door lock shield according to claim 1, characterized in that any one of the grooves (4, 4 ', 4) is widened and provided with another row of carbide means, eg chips (6). Door lock according to claims 1 and 2, characterized in that the 5 outer side of all the grooves (4, 4 ', 4) and the hard metal bars (6) is covered by a cover sheet (8). Door lock shield according to claim 1, characterized in that fastening screws (10) are located at the points of the lock part of the shield (1), under which the carbide means, e.g. discs (9), are located.