EP3104095B1 - Grille de protection d'objets - Google Patents

Grille de protection d'objets Download PDF

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Publication number
EP3104095B1
EP3104095B1 EP16171725.1A EP16171725A EP3104095B1 EP 3104095 B1 EP3104095 B1 EP 3104095B1 EP 16171725 A EP16171725 A EP 16171725A EP 3104095 B1 EP3104095 B1 EP 3104095B1
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EP
European Patent Office
Prior art keywords
columns
object protection
lamellae
protection grating
spacer elements
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP16171725.1A
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German (de)
English (en)
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EP3104095A1 (fr
Inventor
Oliver Sommer
Dieter Hautmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sommer Fassadensysteme Stahlbau Sicherheitstechnik GmbH and Co KG
Original Assignee
Sommer Fassadensysteme Stahlbau Sicherheitstechnik GmbH and Co KG
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Publication of EP3104095A1 publication Critical patent/EP3104095A1/fr
Application granted granted Critical
Publication of EP3104095B1 publication Critical patent/EP3104095B1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/082—Grilles, registers or guards
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2221/00—Details or features not otherwise provided for
    • F24F2221/44—Protection from terrorism or theft

Definitions

  • the present invention relates to a protective object grating, in particular for air inlet or outlet openings in ventilation systems, and to a method for producing such a protective object grating.
  • Object protection grids also known as object security grids, are used in particular to protect against burglary at building openings. They are designed in such a way that a passable cross-section is as small as possible, but in particular in the case of inlet or outlet air openings, a flow resistance is also as small as possible.
  • Object protection grilles of this type are used in supply or exhaust air systems that have to meet special operational safety requirements. For example, it can be supply or exhaust air systems from ventilation centers that have to be protected against external influences.
  • object protection grilles of this type In the case of object protection grilles of this type, increased demands are placed on the strength of the grille in order to achieve a burglary-resistant effect.
  • the dimensions of an object protection grid can be very different. Typical sizes of object protection grilles are in the range between 1.0 m ⁇ 1.0 m and 2.5 m ⁇ 5.0 m. However, smaller and larger dimensions are also possible.
  • any number of individual modules can be lined up next to one another and/or one above the other.
  • Object protection grilles are typically installed in concrete walls or on a concrete installation frame and are usually implemented with so-called lamellar grilles.
  • the DE 44 24 444 C2 describes a basic structure of an object protection grid and an earlier solution by the applicant for the spacing of individual slats. Accordingly, slats are placed on vertically running support struts and spaced apart from one another by means of spacer sleeves. Such an arrangement has high strength, but at the same time is very rigid.
  • the GB 2 172 396 A discloses an air grille for supply or exhaust air openings in ventilation systems, with a plurality of bolts, with a large number of slats and with spacer elements provided between the slats for spacing the slats.
  • the present invention is based on the object of specifying an improved object protection grid.
  • damping elements between the slats of a protective object grating, which at the same time serve to space the slats apart. Better effectiveness against attacks with explosives is thus achieved in a particularly advantageous manner. Furthermore, despite this additional functionality, the number of parts does not need to be increased since the damping elements can replace other spacer elements.
  • a damping element is to be understood as meaning an element which is provided for absorbing energy. In particular, it is therefore not primarily an elastic element. Rather, it is an element which is capable of absorbing energy to a large extent, in particular through plastic deformation. It would also be conceivable to provide a damping element which, in addition to or as an alternative to plastic deformation, is able to absorb energy through internal friction.
  • the slats of a protective grille deform.
  • Energy is passed on to the spacer elements as a result of the deformation of the lamellae. If a spacer element is a damper element, this energy can be directly absorbed, at least in part, so that neighboring slats are no longer or only to a lesser extent deformed. Thus, the extent of damage is massively reduced.
  • all or only some of the spacer elements, but at least one of the spacer elements, can be designed as a damper element.
  • At least one damping element is preferably always arranged within the object protection grid along a force propagation direction.
  • the columns are preferably designed to be significantly stronger than the slats and also have a smaller surface area. Therefore, the pillars are usually not deformed or only slightly deformed when a force is applied, for example a blast. Rather, the columns have the important function of dissipating the load into a frame in which the object protection grille is mounted.
  • the frame is anchored in a wall of the building opening to be protected.
  • the columns are arranged vertically, thus dissipating the load up and down into the frame.
  • a frame can be a rectangular frame, for example. However, a round frame or a polygonal frame and an alignment of the columns other than vertically is also conceivable.
  • the columns can be arranged next to each other at certain distances and in two rows behind each other. However, it is also conceivable to provide only one row of columns or more than 2 rows of columns.
  • the angle between the slats and the columns is preferably right-angled.
  • other angular positions between the slats and the columns are also conceivable, for example in the range from 45° to 135°, preferably in the range from 60° to 120°.
  • the spacing of the lamellae is preferably provided uniformly.
  • the lamellae are spaced apart from one another by between 20 mm and 50 mm, preferably between 30 mm and 40 mm.
  • non-uniformly spaced lamellae can also be provided, in particular in sections.
  • the lamellae preferably run parallel to one another. As an alternative or in addition, however, non-parallel courses would also be conceivable, particularly in sections.
  • the recesses in the lamellae are preferably provided in such a way that they are formed as a hole, that is to say with the material surrounding the lamellae.
  • the recesses are at least large enough or provided with a sufficient diameter for a column to be able to pass through.
  • the recesses are at least large enough or provided with a sufficient diameter for a column to be able to pass through.
  • not all recesses and all columns have to be provided with the same size or with the same diameters. Rather, it would also be conceivable to provide columns of different thicknesses in different areas of the slats. In this case, it would also be conceivable to provide recesses of different sizes adapted accordingly.
  • the spacer elements along the columns are arranged alternately with the slats in a protective object grating or in a method for producing an object protective grating.
  • a uniform and resistant spacing of the slats is thus advantageously created.
  • the slats are or will be arranged parallel to one another. This is achieved in particular by spacing elements that are the same and/or of the same size and are provided at a number of points. An opening cross-section is thus advantageously kept constantly small over the entire object protection grid.
  • the spacer elements have a passage.
  • the spacer elements can be fastened to the columns through the passage.
  • the spacer elements are preferably designed in the form of a sleeve or a helix. They therefore have the shape of a hollow cylinder or optionally, in particular in the case of a position of the lamellae relative to the columns which deviates from a right angle, of an inclined hollow cylinder. Analogously, it can be in the form of a helix or an oblique helix.
  • sleeve-shaped spacer elements are advantageously easy to produce by chopping up a tube.
  • Helical spacers can be made, for example, by winding or winding a wire.
  • a sleeve can also be provided with a helical cut-out in the sleeve wall in order to produce a helical spacer element.
  • the spacer elements are pushed onto the pillars in the case of a protective object grating or in a method for producing an object protective grating, with the columns running through the passage.
  • the spacer elements are or will be slid on loosely, i.e. not fastened apart from their form fit around the column. In the pushed-on state, the column therefore extends through the passage of the spacer elements without the spacer elements being additionally fixed to the column.
  • the spacing elements are or will be "threaded" onto the columns, so to speak. If round recesses and round columns are involved, the diameter of the passage of the spacer elements is therefore greater than or at least equal to the diameter of the columns.
  • the spacer elements are or are thus mounted in a form-fitting manner within the object protection grid without additional fastening means.
  • the slats and the spacer elements are held in their intended position without any force being applied from the outside in that the object protection grid is completely filled with spacer elements and slats along the length of the columns.
  • the spacer elements and the lamellae can move along the columns, so that energy can be absorbed by those spacer elements that are designed as damper elements.
  • At least one spacer element pushed onto each column is designed as a damping element. This ensures that everyone Pillar has the ability to absorb forces. The result of this is that the slats are not sheared off at the spacer elements in the event of a force acting on them, but can be deformed to a certain extent together with the damping element. Energy peaks are thus intercepted or dampened by the damping realized with the damping elements on each column.
  • At least one spacer element pushed onto each column is additionally designed as a fixed sleeve.
  • each spacer element it is not absolutely necessary for each spacer element to be designed as a damping element. Instead, it is sufficient that damping elements are only partially present as spacer elements on each column and the other spacer elements are provided as conventional spacer elements that are easier to produce, here as fixed sleeves, in particular as double-flange sleeves. The manufacturing effort is thus advantageously reduced.
  • the at least one damping element contains a ductile material.
  • it can be an impact-resistant material. It is thus achieved that a particularly high amount of energy can be absorbed by deformation of the material, which is then not released again but is absorbed in particular by plastic deformation.
  • the ductility of a material is the ability to undergo plastic deformation under load before the material fails.
  • Impact strength describes the ability of a material to absorb impact energy without breaking.
  • the plastic deformability of the material plays a role a crucial role.
  • the ductile and/or impact-resistant material allows a damper element to absorb significantly more energy without breaking than in the case of less ductile or brittle materials.
  • the damping element has lateral and/or helical peripheral recesses.
  • Such lateral and/or helical peripheral recesses increase the plastic deformability of the damping element.
  • lateral and/or helical peripheral recesses are provided in a basic shape of the damper element, for example a hollow cylinder shape or sleeve shape or a helical shape.
  • plastic deformation thus occurs even at lower loads than with a solid damping element.
  • the damping property of the spacer element can thus advantageously be adjusted or tuned to the lamellae in a simple manner.
  • the damping elements can be in the form of a helical spring, but without being elastic to a large extent but rather being predominantly plastically deformable.
  • the damping elements can also be designed with regular slots, for example.
  • a high degree of plastic deformability of the spacer elements is achieved in particular by an appropriate choice of material in combination with a suitable choice of the arrangement of the recesses.
  • the slats have a lateral connection to the frame.
  • a connection is preferably realized with a bore provided in the frame and a bolt inserted therein that is bent open on one side of the slat.
  • the bolt works in a similar way to a blind rivet or an explosive rivet and, when bent open, creates a positive and possibly also a non-positive connection between the frame and the slat.
  • a connection without welding is thus created, which advantageously contributes to corrosion protection.
  • the bolt is slotted on the slat side.
  • a slit is made on a face of the bolt facing the lamella side, preferably a straight slit running through the central axis of the bolt.
  • the plastic deformation is preferably a bending up or a spreading of the slot, which is caused by the resistance of the lamella when it is hammered in. After being hammered in, the anchoring of the slat on the frame is no longer reversible or no longer reversible.
  • the bolt is designed to taper conically towards the slat side.
  • this facilitates the insertion of the bolt into the bore and the plastic deformation when the bolt is hammered in.
  • the slit can be widened toward the slat side.
  • all metal parts of the object protection grid are pre-galvanized. All individual parts are preferably already galvanized before assembly. In combination with the driven-in bolts, this enables simpler production and improved corrosion protection. Due to the fact that welding can be dispensed with, no zinc bath (full bath) is necessary for the entire object protection grille after assembly.
  • pre-galvanized individual parts it is conceivable to galvanize the pre-assembled object protection grid in a full bath without driving in the bolts and then drive in the pre-galvanized bolts.
  • the object protection grid 1 shows a cross-sectional view of an object protection grid 1.
  • the object protection grid 1 has a plurality of columns 2, with two columns 2 being shown here by way of example. Since this is a cross-sectional view of object protection grid 1 , the two columns 2 shown are arranged one behind the other in the depth direction of object protection grid 1 . In one into the drawing plane In the transverse direction running, a number of pairs of columns also arranged one behind the other can be provided, depending on the width of the object protection grid.
  • a multiplicity of lamellas 3 are provided, which each have a number of recesses 4 corresponding to the number of columns 2 .
  • Three slats 3 arranged one above the other and parallel to one another are shown here as an example. In the assembled state shown, the columns 2 extend through the recesses 4 of the slats 3.
  • the sleeves 5 and damping elements 6 each have a passage 7 through which a column 2 extends in the assembled state.
  • the spacer elements are pushed onto the columns 2 alternately with the lamellae 3 .
  • the slats 3 are thus spaced apart from one another by means of the spacer elements arranged between them.
  • the columns 2 are designed as concrete-filled metal tubes with a round cross-section. Accordingly, the recesses 4 of the lamellae 3 are also round and have a diameter which forms a loose fit with the outer diameter of the columns 2 ⁇ . This means that the diameters of the recesses are slightly larger, for example larger in the range from 0.2 mm to 2 mm, than the diameters of the columns 2 are formed.
  • the sleeves 5 are designed, for example, as so-called double flange sleeves, ie with a flange at both ends.
  • the passage is also circular and has a diameter which also forms a loose fit with the outer diameter of the columns 2 .
  • the flanges on both sides of the sleeves 5 each serve as a support surface for the slats 3.
  • the damping elements 6 are embodied in a helical shape.
  • this is a wound wire, in particular a helically twisted, thick-walled wire.
  • the wire preferably includes austenitic stainless steel. Alternatively or additionally, it can also contain another metal with a high ductility.
  • the helical shape of the damping elements 6 is provided in such a way that their inside diameter forms a loose fit with the outside diameter of the columns 2 .
  • An outer diameter of the helix-shaped damper elements is dimensioned in such a way that there is a sufficient contact surface for the slats 3 on the end face.
  • the object protection grid 1 also has an in 1 not shown outer, preferably angularly pressed, frame 9 on.
  • the horizontally oriented slats 3 are incorporated laterally into this frame 9 .
  • the slats 3 can either be pushed into the frame 9 using the plug-in method and welded in a shear-proof and corrosion-proof manner.
  • the slats can be secured against corrosion according to the invention by means of formed slotted bolts on the frame 9, what with respect to the Figures 3 to 6 will be dealt with in more detail.
  • the distance between the lamellae 3 is preferably between 30 mm and 40 mm.
  • the vertical columns 2 serve as the main structure and are preferably made of tubular steel manufactured.
  • the columns 2 have the important function of dissipating the effects of force up and down in the frame 9, particularly in the case of explosive loads.
  • the slats 3 can yield to the action of the force due to the transfer of force to the damper elements 6 .
  • the damping elements 6 the energy of the force is absorbed directly inside the object protection grid 1.
  • the damper elements 6 preferably have a ductile material that can be plastically deformed to a large extent. It is also preferably a material that is only slightly elastic, that is to say predominantly anelastic, or at least has elastic hysteresis.
  • the damper elements can be made of malleable carbon steel or another ductile metal.
  • sleeves 5 and damping elements 6 are provided alternately between two consecutive slats 3 .
  • At least one damping element 6 is provided on each column 2, which is able to act as a compensation buffer for slats 3 pushed onto this column.
  • the open structure of the helically shaped damper elements 6 can be flowed evenly around in a zinc bath to provide effective corrosion protection and thus be completely covered with a zinc coating.
  • the vertical columns 2 are inserted into a lower frame part (not shown).
  • nub-like projections are provided on the lower frame part, for example, which have an outer diameter that forms a loose fit with the inner diameter of the columns 2 designed as a steel tube.
  • First spacer elements, sleeves 5 or damping elements 6, are then pushed onto the columns 2, as required.
  • a first lamella 3 is then pushed onto the columns 2 .
  • Spacer elements and slats 3 are then alternately pushed on again until the object protection grid 1 is filled to the top.
  • an upper horizontal frame part (not shown) is pushed onto the columns 2, which closes and secures the columns 2 from above.
  • nub-like projections are also provided on the upper frame part, for example.
  • the slats 3 are then attached to the lateral parts of the frame 9. If a plug-in method is used for this purpose, the side vertical frame parts are attached via pre-punched fitting openings. Alternatively, in the case of pre-galvanized parts, fastening by means of galvanized bolts is advantageous Figures 3 to 6 is still received.
  • the upper horizontal frame part is welded under prestress to the vertical columns 2 and the side frame parts.
  • the entire object protection grid 1 can then be galvanized in a full bath.
  • the columns 2 can be filled, for example with concrete.
  • a bird protection grid 16 can be attached to a side of the object protection grid that is open to the outside of the building, as shown in 1 shown.
  • the lamella 3 has a rectangular basic shape.
  • the lamella 3 does not run in one plane but, as shown in the cross-sectional view in 1 visible, folded several times.
  • a number of recesses 4 corresponding to the plurality of columns 2 is provided in the lamella 3 .
  • the recesses 4 are also provided in the arrangement of the columns 2, so that the lamella 3 can be pushed onto all columns 2, in particular at the same time.
  • two rows, each with seven columns 2 arranged slightly offset from one another are provided in the object protection grid, for example.
  • FIG. 3 shows a detailed representation of a lamella 3 fastened in a lateral frame 9 by means of a bolt 11.
  • the bolt 11 is driven through a bore 10 provided in the lateral frame 9 and is spread open by driving in a slot 12 provided on a side of the bolt 11 facing the lamella 3.
  • a head region 13 of the bolt 11 is plastically deformed on a side facing away from the lamella 3, in particular flattened and broadened.
  • the bolt 11 is shaped like a rivet in such a way that a positive and non-positive connection is produced between the frame 9 and the lamella 3 .
  • FIG 4 shows a cross-sectional view of the arrangement according to FIG 3 .
  • the slot 12 made in the bolt 11 extends so far that the bolt 11 in the mounted state is still continuous in the area of the lateral frame 9 and the slot ends approximately flush with a surface of the lateral frame 9 facing the lamella 3 .
  • the bolt is driven in from the outside, i.e. from the side of the outer frame 9 facing away from the slat 3.
  • the slot 12 has a width that is less than or equal to, preferably less than, the thickness of the lamellae 3 .
  • the bolt 11 therefore bends or spreads open on the lamella side and then acts like a blind rivet. Accordingly, the anchoring achieved by forming the bolt 11 is not reversible, also similar to a blind rivet or explosive rivet.
  • a tenon is preferably also made, which is secured by transverse bolts.
  • the outside of the frame can also still with bronze hard solder.
  • the vertical columns 2 made of tubular steel can also be soldered to the frame with bronze hard solder.
  • figure 5 shows a schematic representation of the positioning of bores 10 on a lateral frame 9.
  • the holes 10 are punched in the lateral vertical parts of the frame 9, specifically in the course of the contours of the slats 3, as shown here in dashed lines.
  • the bores 10 are thus arranged precisely in such a way that the lamellae 3 cross the bores.
  • the slats 3 can only be fastened by driving bolts 11 into the holes 10 in the side frame 9 .
  • the number of bolts 11 provided on a slat 3 or of the bores 10 provided for a slat 3 in the lateral frame 9 depends on the requirements and the size of the object protection grille 1. For example, two bolts 11 can be provided on each side of a slat 3 , So that a lamella 3 is held laterally by a total of four bolts 11 .
  • the bolt 11 is shown in a configuration as it is before assembly or before forming.
  • the bolt 11 is cylindrical and has a head area 13 at a first end and a cone area 14 at a second end.
  • the slot 12 is introduced on the end face of the cone area 14 which represents a lamella side of the bolt 11 .
  • the slot runs centrally in the bolt 11 along a bolt axis 15.
  • the slot 12 is thus provided on the bolt 11 on one side.
  • the slot 12 can be realized by means of a milled area.
  • slot 12 is on the slat side trained towards flared. It can thus be hammered in more easily on the slat 3.
  • Such bolts 11 are preferably made of austenitic steel. Furthermore, they are preferably also pre-galvanized.
  • both columns 2 extend through each of the slats 3 , while only one of the columns 2 extends through the sleeves 5 or damping elements 6 .
  • the spacer elements in such a way that they are elongated in the depth direction and each have 2 passages, so that two columns (or a pair of columns) arranged one behind the other extend through one spacer element.
  • the spacer elements can also be provided exclusively in the form of damping elements.
  • damper elements 6 are provided as spacing elements on the first or front row of columns and only sleeves 5 are provided on the second or rear row. In this case, when force is applied, especially when subjected to explosive loads, a seesaw effect occurs, which also has a dampening effect and thus reduces damage.
  • columns arranged offset from one another laterally or in a zigzag manner can also be provided in a front row and a rear row.
  • more than 2 rows of columns, for example three rows, are also conceivable.
  • damping elements can also be provided.
  • the damping elements can be made of an elastomer, for example polyurethane.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Vibration Dampers (AREA)
  • Sewage (AREA)

Claims (13)

  1. Grille de protection d'objets (1), en particulier pour des ouvertures d'admission ou d'évacuation d'air au niveau d'installations de ventilation,
    comportant une pluralité de colonnes (2),
    comportant une pluralité de lamelles (3) espacées les unes des autres et s'étendant de manière angulaire par rapport aux colonnes (2), les lamelles présentant des évidements (4) à travers lesquels s'étendent les colonnes (2),
    comportant des éléments d'espacement (5, 6) prévus entre les lamelles (3) pour l'espacement des lamelles (3), au moins un des éléments d'espacement (5, 6) étant réalisé sous la forme d'un élément d'amortissement (6) et comprend un matériau ductile et/ou résilient, l'au moins un élément d'amortissement (6) présentant des évidements latéraux et/ou périphériques en forme d'hélice (8).
  2. Grille de protection d'objets selon la revendication 1, dans laquelle les éléments d'espacement (5, 6) sont disposés le long des colonnes (2) de manière alternée avec les lamelles (3) et/ou en ce que les lamelles (3) sont disposées parallèlement les unes aux autres.
  3. Grille de protection d'objets selon une des revendications précédentes,
    dans laquelle les éléments d'espacement (5, 6) présentent un passage (7), en particulier sont réalisés sous forme de douille ou d'hélice.
  4. Grille de protection d'objets selon la revendication 3,
    dans laquelle les éléments d'espacement (5, 6) sont disposés de manière emmanchée sur les colonnes (2), les colonnes s'étendant à travers le passage (7).
  5. Grille de protection d'objets selon la revendication 4, dans laquelle sur chaque colonne (2) au moins un élément d'espacement (5, 6) emmanché sur celle-ci est réalisé sous la forme d'un élément d'amortissement (6).
  6. Grille de protection d'objets selon la revendication 5, dans laquelle en plus sur chaque colonne (2) au moins un élément d'espacement (5, 6) emmanché sur celle-ci est réalisé sous la forme d'une douille solide (5).
  7. Grille de protection d'objets selon une des revendications précédentes,
    dans laquelle l'au moins un élément d'amortissement (6) contient un élastomère, en particulier du polyuréthanne.
  8. Grille de protection d'objets selon une des revendications précédentes,
    dans laquelle l'au moins un élément d'amortissement (6) comprend un métal ductile, en particulier de l'acier austénitique.
  9. Grille de protection d'objets selon une des revendications précédentes,
    dans laquelle en outre un cadre est prévu, les lamelles (3) présentant une liaison latérale avec le cadre (9), laquelle est en particulier réalisée avec un alésage (10) prévu dans le cadre (9) et un boulon (11) inséré dans celui-ci et ouvert sur un côté des lamelles.
  10. Grille de protection d'objets selon la revendication 9, dans laquelle le boulon (11) est prévu avec une encoche du côté des lamelles et est prévu de manière à pouvoir se déformer plastiquement, en particulier s'ouvrir, par enfoncement de l'encoche (12) latéralement au niveau de la lamelle (3).
  11. Grille de protection d'objets selon la revendication 9 ou 10,
    dans laquelle le boulon (11) est réalisé de manière à se terminer en cône en direction du côté des lamelles.
  12. Grille de protection d'objets selon la revendication 9 ou 10,
    dans laquelle toutes les pièces métalliques de la grille de protection d'objets (1) sont zinguées préalablement, en particulier avant le montage.
  13. Procédé de fabrication d'une grille de protection d'objets (1) selon une des revendications précédentes, comprenant les étapes :
    fourniture d'une pluralité de colonnes (2) ainsi que d'une pluralité de lamelles (3), lesquelles présentent des évidements (4), et d'une pluralité d'éléments d'espacement, au moins un des éléments d'espacement (6) étant réalisé sous la forme d'un élément d'amortissement (6) ;
    introduction des colonnes individuelles (2) dans les évidements individuels (4) des lamelles (3) ;
    espacement des lamelles (3) les unes par rapport aux autres au moyen de la pluralité d'éléments d'espacement, lesquels comprennent l'au moins un des éléments d'espacement (6) réalisé sous la forme d'un élément d'amortissement (6).
EP16171725.1A 2015-06-11 2016-05-27 Grille de protection d'objets Active EP3104095B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102015210694.2A DE102015210694A1 (de) 2015-06-11 2015-06-11 Objektschutzgitter

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Publication Number Publication Date
EP3104095A1 EP3104095A1 (fr) 2016-12-14
EP3104095B1 true EP3104095B1 (fr) 2022-07-27

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DE (1) DE102015210694A1 (fr)

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US2625873A (en) * 1950-08-05 1953-01-20 Barber Colman Co Grille
JPS61197942A (ja) * 1985-02-28 1986-09-02 Kawasaki Heavy Ind Ltd 通風口用整流羽根の取付構造
FR2669408B1 (fr) * 1990-11-20 1993-04-02 Houles Robert Grille d'aeration en bois et procede de fabrication d'une telle grille.
DE4424444C2 (de) 1994-07-12 1998-09-03 Sommer Metallbau Stahlbau Gmbh Lüftungseinsatz für eine Gebäudeöffnung

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