EP3489449A1 - Protective grating for building for subsequent placement in wall openings - Google Patents

Abstract

The present invention relates to an object protective grille for subsequent installation in wall openings, in particular for securing a residual cross section of a wall opening with cable feedthrough, with a first slat (2), with a second slat (3), which in a common plane at an angle to the first slat (FIG. 2), wherein in an intersection region (4) the first lamella (2) has a first insertion recess (5) and the second lamina (3) has a second insertion recess (6) oppositely directed to the first insertion recess (5), so that the first and second lamellae (2, 3) can be plugged into one another, wherein a third plug-in recess (7) is provided in each case on at least one end-side section of the slats (2, 3), and with a wall connection element (8) which projects into the third plug-in recess (8). 7) has a plug-in plug-in section (9) and a fastenable with a wall mounting portion (10), wherein the plug portion (9) in such a way is formed, that the lamellae (2, 3) are thus form-fitting fixable to the wall.

Description

FIELD OF THE INVENTION

The present invention relates to an object protection grid for subsequent installation in wall openings

TECHNICAL BACKGROUND

Security grille for wall openings exist in various embodiments.

For certain applications, for example, provided for between two adjacent rooms fuse grid, however, an additional requirement is to be able to use the wall opening beyond, for example, for the implementation of lines. Nevertheless, a passable cross section is to be kept as low as possible.

A security grid for such requirements is in the DE 10 2009 045 984 A1 described. Accordingly, transversely extending tubes are provided within a building opening, which have passage openings for receiving in each case one of the respective tube in the vertical direction crossing threaded rod. By a large number of nuts provided on the threaded rods, the threaded rod is locked relative to the tube. Furthermore, slats are placed on the threaded rods and also held by means provided on the threaded rods nuts. Due to the large number of loose parts or parts to be screwed, however, this securing grid is associated with a high assembly outlay.

The DE 10 2015 211 702 A1 addresses this problem by using several multi-angled and provided with a variety of recesses, frame profiles, in which the tubes can be inserted and secured form-fitting. However, this design requires a customization of the items due to the special shape of the frame profiles.

SUMMARY OF THE INVENTION

Against this background, the present invention seeks to provide a flexibly composed of individual parts and simply retrofittable object protection grid.

According to the invention this object is achieved by an object guard with the features of the protection claim 1.

Accordingly, it is provided:

An object protection grille for subsequent installation in wall openings, in particular for securing a residual cross section of a wall opening with cable feedthrough, with a first fin, with a second fin, which is arranged in a common plane at an angle to the first fin, wherein in an intersection region first lamellae has a first plug-in recess and the second lamella has a second plug-in recess oppositely directed to the first plug-in recess, so that the first and second slats are plugged into each other, wherein in each case at least one end portion of the slats a third plug recess is provided, and with a wall connection element, which a plug-in portion which can be inserted into the third plug-in recess and a fastening portion which can be fastened to a wall, wherein the plug-in portion is designed in such a manner that the slats can thus be fixed in a form-fitting manner to the wall.

The idea on which the present invention is based is to form an object protection grid having a plurality of individual, mutually insertable lamellae and wall connection elements which can be inserted endwise therein. In this way, on the one hand, the geometry of mating recesses provided for the stiffening of the grid itself is used. On the other hand, an object guard is so flexible from, if necessary, only at the installation, selectable and / or cut-off individual slats assembled, the slats, in particular individually, are flexibly fastened to a wall opening having the wall.

It is conceivable to attach only the second slat or, in the case of a plurality of second slats, the second slats to the wall and the first slat or, in the case of a plurality of first slats, the first slats to be positively locked by the plug-in recesses therein set. The wall can serve at the edge of the wall opening as a rear stop for the slats.

In a preferred embodiment, however, in particular for increasing the resistance class, both the first and the second lamella or, in the case of a plurality of lamellae, both the first and the second lamellae are fastened to the wall with a wall connection element. Insofar as the installation situation permits, a wall connection element is provided in each case on both end-side sections of a lamella. Due to the preferably individual attachment to the wall, the slats are each set individually. It is also conceivable, however, a grouped attachment, for example, two or more fins with a common wall connection element. However, no surrounding frame is provided.

In addition, the lamellae keep each other but also in the respective intersection region, so that advantageously despite the relatively simple mechanical structure, a fairly high burglar-resistant effect, for example according to the resistance class RC5, is available.

For example, a lamella means a flat profile. Conceivable, however, are single or multiple curved or curved lamellae.

A plug-in recess is to be understood in particular as a recess extending in the transverse direction or at least obliquely to the longitudinal direction of the slat, which extends continuously from one edge of the slat, preferably over the entire thickness, but not over the entire width of the slat. For example, the plug recess may extend over half the width to a center of the blade. Thus, a first and a second blade without supernatant are plugged into each other.

While the first and the second plug-in recess preferably complement each other, the third plug-in recess may be deviating therefrom. It is designed in particular adapted to the wall connection element or tuned to it. In particular, the third plug-in recess has a smaller depth compared to the first or second plug-in recess.

In one embodiment, the first and the second lamella or all intersecting lamellae can be arranged perpendicular to one another, at least essentially. However, other embodiments are also possible, so that for example also obliquely or at least in sections, round slats are possible.

Such an object protective grid according to the present invention can be produced, for example, by a method for the subsequent installation of an object protective grid, comprising the following steps: arranging a first lamella, which has a first insertion recess, and a second lamella, which has a second insertion recess, in a common plane crosswise, wherein in an intersection region, the first and second plug-in recess are inserted into one another; Inserting a plug-in portion of a wall connection element into a third plug-in recess provided on at least one end-side section of at least one of the first and second slats; and fixing a fastening portion of the wall connection element with a wall such that the lamellae are thus fixed to the wall in a form-fitting manner.

Of course, the method can be supplemented with all the features of the object protection grid according to the invention or with steps of their assembly.

An inventive protective screen is due to its flexible mounting especially for retrofitting in wall openings. Above all, it is suitable for flexible adaptation to conditions of the installation site, for example, even if there are already passage lines and the remaining cross section to be secured against unauthorized entry or insertion of objects.

The connection of the wall connection element is preferably carried out on concrete walls, but other materials of the wall are possible. The wall connection elements are, for example, pegged and / or screwed to the wall.

The slats can be prefabricated in different lengths with appropriately provided therein plug-in recesses. It would also be conceivable, however, to provide the lamellae as endless products or by the meter individually shortened. In both cases, the slats can be adapted to the installation situation, in particular the individual Course of lines and / or the individual size and shape of a wall opening to be selected during assembly.

The first and second slats can be provided in particular as vertical and horizontal slats. In this case, the vertical slats, for example, plug-in recesses in the form of slots for insertion of horizontal slats, and vice versa.

Preferably, the protective screen is mounted on a protected inside of the wall.

The plug-in portion of the wall connection elements is preferably formed with a further fourth plug-in recess. For example, a wall connection element embodied as a wall connection angle can have a partially continuous slot on the insertion section on one side. In particular, the slot may extend over a corner or edge of the wall connection angle, so that the lamella can be accommodated in the slot in both dimensions of the wall connection angle.

Such a wall connection element is inserted at the end portion in the second blade and then secured to the wall. In the case of a wall connection angle, for example, this can be pushed over the lamella into the third plug-in recess at the end and then screwed with steel dowels in a concrete wall. Of course, the same can be additionally provided on an end portion of the first sipe and / or on the respective second end portions of the first and / or second sipes.

If both end sections of the second louvre project beyond the wall opening, both end sections are preferably fastened with wall connection elements. Of course, depending on the installation situation and the desired resistance class, the first slats can also be fastened to the wall in the same way as the second slats with wall connection elements.

According to the invention, in particular, no peripheral frame of the object protection grid is provided, but rather a multiplicity of individual or individually fastened wall connection elements for each lamella. In this way, the assembly on the one hand very flexible and on the other hand, but also a time required for disassembly, which ultimately determines the resistance class, relatively high, since the lamellae also hold each other.

As a material of the protective screen, in particular the lamellae and / or wall connection elements, in particular steel comes into question, for example, S 235 or S 335, preferably galvanized or painted. Of course, but depending on the required resistance class, other materials can be used.

It is also conceivable to use different materials for slats and wall connection element. If the wall connection elements are located, for example, far away from the wall opening and thus can not be attacked from the outside, they may possibly also be formed with a material of lesser strength, for example brass, cast iron, aluminum or plastic.

Advantageous embodiments and further developments will become apparent from the other dependent claims and from the description with reference to the figures of the drawing.

According to one embodiment, the first and second plug-in recesses are in each case designed as a straight slit which partially penetrates a slat cross-section.

According to one embodiment, the width of the slot substantially corresponds to the lamella thickness. The vote of the width of the slot on the lamella thickness is possible with a predetermined fit, preferably with play or transition fit.

According to one embodiment, the third plug-in recess of the second plug-in recess is oriented oppositely. Thus, a simple insertion is guaranteed. Furthermore, a positive connection is possible in this way. The alignment may also be only partially opposite or oblique.

According to one embodiment, the plug-in section is designed such that a lamella can thus be fixed in all directions or spatial directions. The plug-in section thus preferably forms a stop in all three translational degrees of freedom. An at least partial determination of rotational degrees of freedom is possible.

According to one embodiment, the wall connection element is designed as a wall connection angle, wherein the plug portion are provided on a first angle arm and the attachment portion on a second angle arm. Advantageously, for example, processed standard angles can be used as a wall connection element.

According to one embodiment, the plug-in section has a fourth plug-in recess which is introduced into the first angle arm and which is aligned opposite to the third plug-in recess. For example, the fourth plug-in recess can be cut into a standard angle.

According to one embodiment, the third plug-in recess is formed as a straight, a slat cross-section partially penetrating slot. The width of the slot substantially corresponds to the angular thickness, wherein different adjustments of the fit are possible, for example as play or transition fit.

According to one embodiment, the fourth plug-in recess is formed as a straight, a cross-section of the plug portion partially penetrating slot. The width of the slot substantially corresponds to the lamella thickness, wherein also different adjustments of the fit are possible, preferably as play or transition fit.

According to an advantageous embodiment, a securing element for securing the plug connection is provided in the crossing region. In this way, the connector is secured against unwanted or unauthorized release.

According to a further development, the securing element has a flat connector. The flat connector is provided with the first lamella fastened such that it extends in the crossing region parallel to the first lamella on the second lamella and secures the second lamella so form-fitting manner in the first plug-in recess. The flat connector is, for example, a U-shaped flat iron with through holes for attachment in the region of the U-legs.

According to a development, the securing element has two flat connectors arranged opposite one another in the crossing area on both sides of the first lamella. In this way, the fuse of the connector is advantageously reinforced. At least one of the two flat connectors can have at least one threaded hole, so that the two flat connectors can be connected to a screw and thus fastened. For fastening in this case, a bore is further provided in the first blade, wherein a screw inserted at a first side in a bore of the first flat connector, passed through the bore of the blade and screwed on the second side into a threaded bore of a second flat connector.

According to a preferred refinement, a tool attachment provided for fastening the flat connector in the assembled state is provided with a lockingly driven securing insert. For example, a hexagon socket or internal torx can be secured with a steel ball driven or hammered therein with a press fit.

According to a further embodiment, the securing element has a bracket holder, which comprises a U-shaped bracket which fixes the first lamella and a clamp covering the crossing area.

According to a development, the bracket holder on a first and a second U-shaped bracket. The U-shaped brackets are provided on both sides of the crossing area. For example, they are guided through in each case one through opening in the first lamella and fastened with in each case two strap ends with the clamp. It is also conceivable to guide the stirrups around the entire depth of the first lamella so that they surround the lamella. In this way, in each case a positive connection of the U-shaped bracket is made with the first blade.

The U-shaped bracket can be fastened to the clamp, for example by screwing or welding.

In the case of a screw, the legs of the U-shaped bracket, for example, an external thread. Furthermore, the nuts used for the screw connection are provided on the protected or the inside of the protective screen, so that they are covered to the outside by the clamp. Preferably, also a cover the nuts are provided, which is fastened with a suitable fastening means, for example with a countersunk screw in the clamp. A tool attachment of the fastener is or is preferably provided after assembly with a fuse link, for example in the form of a steel ball impacted with a press fit.

The above embodiments and developments can, if appropriate, combine with each other as desired. Further possible refinements, developments and implementations of the invention also include combinations, not explicitly mentioned, of features of the invention described above or below with regard to the exemplary embodiments. In particular, the person skilled in the art will also add individual aspects as improvements or additions to the respective basic form of the present invention.

CONTENT OF THE DRAWING

Fig. 1

eine schematische Darstellung eines Abschnitts eines Objektschutzgitters;

Fig. 2A - 2D

Schritte zur Montage beim Einbau eines Objektschutzgitters;

Fig. 3

eine perspektivische Detaildarstellung von Kreuzungsbereichen eines Objektschutzgitters;

Fig. 4

eine Draufsicht mit Quer- und Längsschnitt eines Objektschutzgitters gemäß einer weiteren Ausführungsform;

Fig. 5

eine Draufsicht mit Quer- und Längsschnitt eines Verbindungselements;

Fig. 6

ein Verbindungselement mit Sicherungseinsatz;

Fig. 7

eine Draufsicht und Vorderansicht eines Verbindungselements gemäß einer weiteren Ausführungsform; und

Fig. 8

eine Draufsicht mit Quer- und Längsschnitt eines Verbindungselements gemäß einer noch weiteren Ausführungsform.

The present invention will be explained in more detail with reference to the exemplary embodiments indicated in the schematic figures of the drawing. It shows:

Fig. 1

a schematic representation of a portion of an object protection grid;

Fig. 2A - 2D

Steps for mounting when installing a protective screen;

Fig. 3

a detailed perspective view of crossing areas of an object protection grid;

Fig. 4

a plan view with a transverse and longitudinal section of an object protective grid according to another embodiment;

Fig. 5

a plan view with a transverse and longitudinal section of a connecting element;

Fig. 6

a connector with fuse link;

Fig. 7

a plan view and front view of a connecting element according to another embodiment; and

Fig. 8

a plan view with a transverse and longitudinal section of a connecting element according to yet another embodiment.

The accompanying figures of the drawing are intended to convey a further understanding of the embodiments of the invention. They illustrate embodiments and, together with the description, serve to explain principles and concepts of the invention. Other embodiments and many of the stated advantages will become apparent with reference to the drawings. The elements of the drawings are not necessarily shown to scale to each other.

In the figures of the drawing are the same, functionally identical and same-acting elements, features and components - unless otherwise stated - each provided with the same reference numerals.

DESCRIPTION OF EMBODIMENTS

Fig. 1 shows a schematic representation of a portion of an object protection grid. 1

The object protection grid 1 is a grid provided for retrofitting in a wall opening 20, which has a first slat 2 and a second slat 3. The two slats 2, 3 are arranged in a common plane of the wall opening 20 at an angle to each other.

In an intersection region 4 of the slats 2, 3, the first slat 2 has a first plug-in recess 5 and the second slat 3 has a second plug-in recess 6 oppositely directed to the first plug-in recess 5. By means of the plug-in recesses 5, 6, the two slats 2,3, as shown, plugged into each other.

In the embodiment shown, the first plug-in recess 5 of the first lamella 2 is arranged on a longitudinal side of the first lamella 2 projecting into the plane of the drawing. The second plug-in recess 6 of the second lamella is arranged on the longitudinal edge of the second lamella 3 lying in the plane of the drawing.

The first and second lamella 2, 3 furthermore each have a third plug-in recess 7 on an end-side section. In the illustrated perspective, the end-side section and the third plug-in recess 7 are located at the upper end of the second lamella 3. In this area, a concealed step 21 of the second lamella 3 is provided, which is provided and designed to bear against the edge of the wall opening 20 , In the same way, a shoulder 21 'is provided on the end-side section of the first lamella.

In addition, a wall connection element 8 is provided which has a plug-in section 9 and a fastening section 10. The plug-in portion 9 is formed in the third plug-in recess 7 inserted. The attachment portion 10 is further formed fastened with a wall. By inserting the plug-in section 9 into the third plug-in recess 7 and fastening the fastening section 10 to the wall, the second slat 3 is fixed in a form-fitting manner to the wall. In particular, it can no longer be shifted in any of the three translational degrees of freedom. Also, the rotational degrees of freedom are, at least largely, fixed.

The Fig. 2A - 2D show steps of installing an object protection grid. With the illustrated steps for installation, the protective screen can be mounted or produced at the installation site. Of course, but complementary mounting steps for other, not shown here, elements are provided.

Fig. 2A illustrates a step of arranging a plurality of first fins 2 in a wall opening 20.

The first slats 2 are formed as flat profiles, which have recesses in the form of plug-in recesses 5 and end-side shoulders 21.

The mounting takes place on a protected wall side opposite an attack side

By way of example, the first lamellae are introduced vertically into the wall opening 20. The orientation of the first and second blades 2, 3 is therefore opposite here Fig. 1 reversed.

The arrangement of the first slats 2 is made at a distance from each other, which corresponds to a distance of second plug-in recesses 6 of the second slats 3. In the illustrated embodiment, this distance is regular. In further embodiments, however, irregular or uneven distances would also be conceivable.

The first lamellae 2 are aligned perpendicular to the desired distance and initially fixed provisionally (for example with wooden wedges), so that the lamellar ends abut with the end-side sections of the lamellae on the protected wall side.

In a second step according to Fig. 2B are then inserted in each case in the crossing regions 4 of the slats 2, 3 second slats 3 with their second plug-in recesses 6 crosswise in the first plug-in recesses 5 of the first slats 2. In the illustrated embodiment, the first and second plug-in recesses 5, 6 are each in the form of a straight slot, the first and second plug-in recesses 5, 6 each partially penetrating slot. A width of the slot corresponds substantially, ie with a predetermined fit, in particular clearance, a lamella thickness of the first and second fins.

In the illustrated embodiment, the wall opening 20 is formed purely by way of example approximately square. Apart from the direction of the second plug-in recesses 6, the second slats are therefore formed substantially equal to the first slats. Of course, however, different lengths of the first and second slats may be provided for different longitudinal or transverse dimensions. In particular, the first and / or second lamellae 2, 3 adapted to the size of the wall opening 20 can also be individually cut or adjusted in length.

For clarity, only two second fins are shown here, which are respectively inserted into the outermost first plug-in recesses 5 of the first fins 2. Among other things, this serves to control the distance dimensions of the first slats 2. The final assembled state with all second slats 3 is in Fig. 2D shown.

Both the first lamellae 2 and the second lamellae 3 each have a shoulder in their end-side sections, which is located at the edge of the wall opening 20 supported, so that on the one hand a back or wall-side stop is formed by the positioning and nesting on the other hand, the vertical and horizontal position of the slats 2, 3 in the wall opening 20 is largely predetermined. Of course, but it is a double fit to avoid, so in practice a sufficient game is provided.

Fig. 2C shows a further step of the assembly, wherein the wall connection elements 8 are plugged with the plug portion 9 respectively at an end portion of the lamellae 2.3 in third plug recesses 7 provided thereon. The third plug-in recesses 7 are aligned opposite the second plug-in recesses 6.

The wall connection elements 8 can, as in the embodiment shown here (see also Fig. 2D ) are provided both on the first and on the second slats 2, 3.

In further embodiments, it is also conceivable to provide wall connection elements 8 only on the first or second lamellae and to fix the other lamellae in a form-fitting manner only by their end-side shoulder 21 and the first and second insertion recesses 5, 6.

In still further embodiments, it is also conceivable to omit wall connection elements 8 at an end-side section of the first or second slats, provided that both end-side sections of the other of the first or second slats are provided with wall connection elements 8 and fastened to the wall. In this case, however, the other fins would have to be sufficiently fastened with securing elements in the points of intersection.

For better clarity are in Fig. 2C shown only attached to the first fins wall connection elements 8. Further purely illustratively here wall connection elements 8 are partially provided as double elements for two lamellae and partially as individual wall connection elements 8 for a single lamella. Of course, it would also be conceivable to use three or more elements for three or more fins.

The wall connection elements 8 are each fastened with their attachment portion 10 beyond the wall opening 20 on the wall, for example by dowelling with suitable holes, dowels and screws.

The wall connection element 8 is designed here as a wall connection angle, wherein the plug portion 9 are provided on a first angle arm and the attachment portion 10 on a second angle arm. For insertion, the plug-in section 9 has a fourth plug-in recess 11 introduced into the first angle arm, which is aligned opposite the third plug-in recess 7. The fourth plug-in recess 11 is formed as a straight, a cross-section of the plug portion 9 partially penetrating slot whose width substantially corresponds to the slat thickness. The third plug-in recess 7 in the lamella is also formed as a straight, a slat cross-section partially penetrating slot whose width substantially corresponds to the angular thickness. In this way, the wall connection elements 8 designed as wall connection angles are placed on the protected wall side over all lamella ends in their designated third plug-in recesses 7.

As a fastener for wall mounting Durchsteckanker the dimension M1O are provided with countersunk head, for example, in a wall of concrete concrete. Holes in the wall are made in accordance with the dowel specification (diameter, drilling depth). the dowels are then inserted through the provided in the attachment section holes in the wall connection angle, preferably with washers, and tightened the dowel according to the allowable torque.

After attaching the first wall connection bracket 8 to the vertical slats 2 all missing horizontal slats 3 can be inserted and also attached to the wall connection brackets.

Fig. 2D shows the final assembled state of the protective grille 1, wherein wall terminal elements 8 are provided purely by way of example on all slats 2, 3 end. Depending on the installation situation, in other embodiments, individual slats may only partly project beyond the wall opening 20, so that the slats may be partially fastened to a wall connection element 8 only on one side. In this case, however, at a second cut end or a shortened end, a T connection with a In relation to Fig. 6 will be discussed in more detail.

For producing the final assembled state according to Fig. 2D Furthermore, a step of attaching securing elements 12 in the crossing regions 4 is provided. These are used to secure the connector, so that even in the crossing areas 4 a positive connection is made.

In the illustrated embodiment, the securing elements 12 are provided at all crossing areas on the vertical slats 2 in the form of two flat connectors, which are each screwed with two hexagon socket countersunk screws. Finally, steel balls are pressed into or punched into the hexagon socket by means of an indentation or impact tool.

The protective object grille 1 is designed for subsequent installation in wall openings, preferably if there are already passage lines and the remaining cross-section against unauthorized entry or insertion of objects to be secured.

In principle, deviating forms of wall connection elements 8 are conceivable. In one embodiment, the connection of the grid construction takes place mainly on concrete walls and there either by means of suitable frame or short parts as wall connection elements 8, which are pegged to the adjacent wall. The frame or short parts are formed with milled slots as a fourth plug-in recess 11, in which the first slats 2 in the form of vertical flat slats can be used. The vertical slats 2 have first plug-in recesses 5 in the form of slots for insertion of horizontal second slats 3. The fuse of the slats is formed so that the wall connection elements are not continuously slotted on at least one formed as a plug-in portion of the angle. The slots are rather closed at the end of the plug-in section. The angles are pushed over slats and then bolted with provided in the wall steel dowels.

In such an assembly is dispensed with a peripheral frame. The horizontal slats 3 are pushed into the pre-aligned slots 5 of the vertical slats 2. Subsequently, the individual wall connection elements 8 or angle pushed over the respective ends of the slats 2, 3 and screwed with wall plugs.

In the crossing region 4 flat connectors 13 are screwed in the form of slotted flat pieces or flat iron to the vertical slats and the slats secured against each other.

The material used for the slats 2, 3 and / or wall connection elements 8, for example, predominantly steel S 235 or S 335, in particular galvanized or painted.

Furthermore, various requirements are to be placed on the masonry of the wall. In order to ensure the burglar-resistant effect of burglary-resistant elements, it is assumed that the adjacent wall is a solid wall of concrete or brickwork according to the requirements of the surrounding wall according to DIN EN 1627: 2011-09: Wall of masonry according to DIN 1053-1 Reinforced concrete wall according to DIN 1045-2 resistance class nominal thickness Compressive strength of the stones Mortar group (min) nominal thickness strength class RC5 ≥240 mm ≥20 DM ≥140 mm C12 / C15

Other wall types (e.g., mounting walls) may be suitable if it is ensured that the loads involved can be absorbed and the resistance of the masonry is comparable to the resistance of the burglary-resistant protective screen.

Before mounting, check the wall opening 20 for damage that may affect the overall strength.

The choice of fasteners is taking into account the forces to be transmitted, the strength of the adjacent component (masonry, concrete) and occurring in the connection joints movements, eg. B. by thermal expansion, made.

Fig. 3 shows a detailed perspective view of crossing regions 4 according to one embodiment of an object protection grid 1.

In the crossing region 4, a securing element 12 for securing the plug connection of the first and second slats 2, 3 is provided in each case. In the embodiment shown here, the securing element 12 is a flat connector 13, with reference to FIG Fig. 5 will be discussed in more detail.

Such a flat connector 13 is provided with the first blade 2 fastened such that it extends in the crossing region 4 parallel to the first blade 2 on the second blade 3 and the second blade so positively secured in the first plug recess 5. In this way, the first and second blades 2, 3 are firmly coupled together in their connectors.

In the embodiment shown here, the securing element 12 has two flat connectors 13 arranged opposite one another in the crossing region 4 on both sides of the first lamella 2. These can thus be screwed together for assembly.

Overall, a plurality of connections of the slats 2, 3 with each other and with the wall are created in this way. In order to release the protective grille 1, at least all fastenings with the wall would have to be loosened, but this is very complicated, in particular because these or the wall connecting elements 8 are preferably located on a protected inner side of the protective grille 1. Such an object guard thus has, for example, the resistance class RC 5 according to DIN EN 1627.

Fig. 4 shows a plan view with a transverse and longitudinal section of an object protection grid 1 according to another embodiment.

Various embodiments of first and second lamellae 2, 3, wall connection elements 8 and securing elements 12 are shown by way of example in this embodiment. The various variants are used in particular for individual adaptation, for example, to the needs of passing through the wall opening cable guides. In grid sections without such line guides, the grid spacing can thus be set more closely meshed, while recesses of the grid are possible locally for routing in a variety of sizes.

On the one hand, the spacings of the first and second lamellae 2, 3 can be adjusted in each case by different or different width wall connection elements 8. The position of the first and second plug recesses 5, 6 is in each case adapted accordingly.

In the sectional view A-A, the configuration of the wall connection elements 8 can be seen in section. These are formed here as 90 °-angle connector, wherein the plug-in portion 9 has the fourth plug-in recess 11. This fourth plug recess extends beyond the 90 ° bend of the angle connector and thus also partially into the wall connection section 10.

The illustrated in the drawing AA from the side second sipe 3 extends in the illustrated drawing at one (top in the illustration) end-side section in the height direction up to a lying in the mounting portion 10 of the wall connection element 8 end of the fourth plug recess 11. The mounting portion 10 is already flat in this area on the wall. Beyond the fourth plug-in recess 11 of the attachment portion 10 is connected to the wall.

Purely by way of example, the connection of the fastening element 10 to the wall is provided here with a screw which is screwed into a profile 22 defining an edge of the wall opening 20. In this case, the illustrated profile 22 is a part of the wall opening 20 containing wall.

In the region of the plug-in section 9, the fourth plug-in recess 11 extends approximately to a center of the plug-in section 9. The height of the remaining material of the plug-in section 9 corresponds to a height of the third plug-in recess in the second slat 3 shown laterally in the section AA State supports the paragraph 21 of the second blade 3 also on the wall, or here the profile 22, from. As a result of the cross-over plug-in connection with the wall connection element 8 and its fixing via the fastening section 10, the lamella 3 is thus fixed to the wall (or here the profile 22).

In the further sectional illustration B-B, the connection of the first lamella 2 via wall connection elements 8 to the wall (or profiles) is provided in the same way at both end-side sections of the first lamella 2.

At the second (in section A-A bottom) end-side portion of the second fin 3 no connection via a wall connection element 8 is provided. Instead, it is cut to length at this point according to the geometry of the wall opening 20 at the edge. In this way, for example, the length of the slats 3 are individually adapted to different wall openings 20. A wall connection element 8 is here thus free or loose.

In addition, different types of fuse elements 12 are provided in addition to the different slats. The different securing elements 12 serve on the one hand to adapt to different local space conditions and on the other hand, a variation of the orientation of the fastening means used for securing the securing elements 12. In the illustrated embodiment, for example, in a lower half of the object protection grid are those already in Fig. 3 illustrated flat connector 13 is provided as securing elements 12. In some cases, these are at places where a single horizontal lamella, for example, to line feedthrough, locally excluded, by a with respect to Fig. 6 replaced T-connector explained in more detail.

In contrast, in an upper half of the object protection grid 1 so-called bracket holders 16 are provided for connecting the slats 2, 3. These are related to Fig. 7 explained in more detail.

With an object protection grid 1 designed in this way, cable bushings can thus be flexibly made possible and a residual cross section of the wall opening 20 can nevertheless be secured tightly.

Fig. 5 shows a plan view with a transverse and longitudinal section of a connecting element.

This connecting element is designed here with U-shaped flat connectors 13 provided on both sides of a lamella 2. A flat connector 13 is in each case as a flat iron with on one edge entering and extending to about the middle recess formed in lamella thickness with clearance. The recess is milled, for example, so that a U-shape of the flat connector 13 is formed. In the region of the U-legs thus created, a fastening bore is provided in each case.

A first flat connector 13A, in the illustrated embodiment, has a counterbore for countersinking a countersunk screw head. For example, a countersunk screw used for this purpose may be an M10 countersunk screw according to DIN 7991. In a second flat connector 13B, the mounting hole is provided with an internal thread for screwing the countersunk screw.

The lateral flanks of the flat iron are beveled, for example by means of flame cutting. In particular, the approach of a lever tool on the flat connector 13 is made more difficult in this way.

Fig. 6 shows a connecting element 12 after Fig. 5 with fuse link.

As already in relation to Fig. 2D mentioned, is provided for fixing the flat connector 13 tool attachment 14 of a fastener in the assembled state with a non-positively driven into the tool attachment 14 fuse link 15. Depending on the design of the tool attachment, it may possibly also be a securing attachment.

For example, as in the illustrated embodiment, with a hexagon socket as a tool attachment 14, a steel ball can be driven in as a securing insert 15.

Fig. 7 shows a plan view and front view of a connecting element according to another embodiment.

This is a T-connector, which with a flat connector 13 according to Fig. 5 and two elbows 23 is formed. While the flat connector 13 extends over the crossing region 4, the angle pieces 23 are inserted respectively in corners of the crossing region 4.

Fig. 8 shows a plan view with a transverse and longitudinal section of a connecting element according to yet another embodiment.

The securing element 12 is embodied here as a bracket holder 16 which comprises a U-shaped bracket 17 fastening the first slat 2 and a clamp 18 covering the crossing area 4. The bracket 17 may be, for example, a round steel bar according to DIN 3570, for example in the dimension M10.

The bracket holder 16 has a first and a second U-shaped bracket 17, 17 ', which are fastened on both sides of the crossing region 4 with the first lamella 2 and with in each case two strap ends 19, 19' with the clamp 18.

For fixing the strap ends 19, 19 ', the clamp 18 through holes, behind which a nut on the strap ends 19, 19' is placed.

To cover the nuts, a C-shaped cover plate is provided, which is fastened with a countersunk screw on the clamp 18.

Although the present invention has been fully described above with reference to preferred embodiments, it is not limited thereto but is modifiable in a variety of ways.

LIST OF REFERENCE NUMBERS

1

Object guard

2

first lamella

3

second lamella

4

crossing area

5

first plug recess

6

second plug recess

7

third plug recess

8th

Wall connection element

9

plug-in section

10

attachment section

11

fourth plug recess

12

fuse element

13

flat connector

14

tool attachment

15

fuse link

16

cradle

17.17 '

hanger

18

clamp

19, 19 '

Ironing end

20

wall opening

21

paragraph

22

profile

23

elbow

Claims (15)

Protective object grille (1) for retrofitting in wall openings, in particular for securing a residual cross-section of a wall opening with cable feed-through,
with a first lamella (2),
with a second lamella (3) which is arranged in a common plane at an angle to the first lamella (2), wherein in an intersection region (4) the first lamella (2) has a first insertion recess (5) and the second lamella (5) 3) one of the first plug-in recess (5) oppositely aligned second plug recess (6), so that the first and second lamellae (2,3) are plugged into each other, wherein in each case at least one end portion of the slats (2, 3) has a third plug recess (7), and
with a wall connection element (8) which has a plug-in section (9) which can be inserted into the third plug-in recess (7) and a fastening section (10) which can be fastened to a wall, wherein the plug-in section (9) is designed such that the slats (2, 3 ) so that the wall can be fixed in a form-fitting manner. Object protection grid according to one of the preceding claims,
characterized,
that the first and second plug-in recess (5, 6) in each case as a straight, a lamellar cross-section partially penetrating slit are formed. Object protection grid according to claim 2,
characterized,
that a width of the slot substantially corresponds to a lamella thickness. Object protection grid according to one of the preceding claims,
characterized,
that the third plug-in recess (7) of the second plug-in recess (6) is oriented opposite. Object protection grid according to one of the preceding claims,
characterized,
that the plug-in section (9) is formed such that a blade (2, 3) so that can be fixed in all spatial directions. Object protection grid according to one of the preceding claims,
characterized,
that the wall connection element (8) is formed as a wall connection angle, said plug portion (9) at a first angle arm and the fixing portion (10) are provided at a second angle arm. Object protection grid according to claim 6,
characterized,
in that the plug-in section (9) has a fourth plug-in recess (11) introduced into the first angle arm, which is aligned opposite the third plug-in recess (7). Object protection grid according to claim 7,
characterized,
that the third plug-in recess (7) as a straight, a lamellar cross-section partially penetrating slot is formed, the width of which substantially corresponds to an angular starch. Object protection grid according to claim 7 or 8,
characterized,
in that the fourth plug-in recess (11) is designed as a straight slit which partially penetrates a cross-section of the plug-in section (9) and whose width substantially corresponds to the slat thickness. Object protection grid according to one of the preceding claims,
characterized,
in that a securing element (12) for securing the plug connection is provided in the crossing area (4). Object protection grid according to claim 10,
characterized,
in that the securing element (12) has a flat connector (13) which is provided with the first lamella (2) fastened in such a way that it extends over the second lamella in the crossing area parallel to the first lamella and the second lamella thus fits positively in the first lamella first plug recess secures. Object protection grid according to claim 11,
characterized,
that the securing element (12) has two in the crossover region (4) on both sides of the first blade oppositely disposed (2) flat connector (13). Object protection grid according to claim 11 or 12,
characterized,
in that a tool attachment (14) provided for fastening the flat connector is provided in the assembled state with a securing insert (15) driven in a force-fitting manner. Object protection grid according to claim 10,
characterized,
in that the securing element (12) has a bow holder (16) which comprises a U-shaped bow (17) fixing the first rib (2) and a clamp (18) covering the crossing area (4). Object protection grid according to claim 10,
characterized,
that the bar holder 'which which both sides of the intersection region (4) of the first blade (2) and each having two bow ends (19, 19 a first and a second U-shaped bracket (17, 17)') (with the collar 18 ) are attached.

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