EP1524487B1 - Barrier for stopping movements - Google Patents

Description

The invention relates to a Bewegungshemmnis according to the preamble of claim 1.

Such a Bewegungshemmnis is known from DE 101 57 572 A1. This known Bewegungshemmnis, which may be provided, for example, for physical protection or for marking purposes, consists of an elastic micro-wire low tear strength. From the microwire, a compacted wire body is formed which stores mechanical strain energy. The compacted wire body is expandable by utilizing stored strain energy, the volume delimited by the expanded wire body having the shape of a three-dimensional geometric body.

This known Bewegungshemmnis has the defect that the necessary spatial, ie three-dimensional connections of the peripheral edge elements forming micro-wire sections with each other defined fixed angle, resulting in either limited compressibility, ie compaction, of the respective inhibitor or a kinking of the microwires leads in particular in the region of the compounds.

In view of these circumstances, the invention has for its object to provide a Bewegungshemmnis of the type mentioned, which is performance-enhanced, i. which is very small volume packable, and in addition, the compounds of the marginal edge elements are more tear resistant than the marginal edge elements themselves.

This object is achieved according to the invention in a Bewegungshemmnis of the type mentioned by the features of the characterizing part of claim 1. Preferred embodiments or further developments of the movement inhibitor according to the invention are characterized in the subclaims.

The movement inhibitor according to the invention has edge edge elements which can be formed by micro-wires, fibers or fiber bundles, so-called rowing. The microwires, fibers or fiber bundles may consist of metals, metal alloys, glasses, ceramics, polymer materials, carbon or the like. The marginal edge elements are connected to at least one individual element of the respectively desired mesh size or element size by being firmly connected to each other at some or all corners or crossing points. These compounds are made for example by means of an adhesive.

The resilient adjustment of the at least one individual element from the small-volume packing or storage state into the large-volume active state, ie the erection and expansion of the movement inhibitor is carried out by the spring elements which are attached to the corners or in the region of the peripheral edge elements. The spring elements may simply be wire pieces, preferably spring wire segments. In this case, firm connections between the spring elements are maximally in one plane, ie produced two-dimensionally. This ensures that the movement obstacles according to the invention can be maximally compressed without buckling of the spring elements and thus can take a very small-volume pack or storage condition. For example, movement inhibitors according to the invention can be flattened in one plane and wound up in this flattened state onto a reel or spool core.

Further details, features and advantages of the invention will become apparent from the following description of schematically illustrated in the drawing embodiments of the movement inhibitor according to the invention in conjunction with dimensioning aspects thereof.

Figur 1

eine erste Ausbildung des Bewegungshemmnisses im großvolumigen Aktivzustand,

Figur 2

eine der Figur 1 ähnliche räumliche Darstellung einer zweiten Ausbildung des Bewegungshemmnisses im großvolumigen Aktivzustand,

Figur 3

eine räumliche Darstellung eines eine Vielzahl Einzelelemente aufweisenden wall- bzw. mauerartigen Großhindernisses, und

Figur 4

benachbarte Einzelelemente des Großhindernisses gemäß Figur 3 insbesondere zur Verdeutlichung der Federelemente der Einzelelemente.

Show it:

FIG. 1

a first embodiment of the movement inhibitor in the large-volume active state,

FIG. 2

1 shows a similar spatial representation of a second embodiment of the movement inhibitor in the large-volume active state,

FIG. 3

a spatial representation of a plurality of individual elements having wall or brick-like major obstacle, and

FIG. 4

adjacent individual elements of the large obstacle according to Figure 3 in particular for clarification of the spring elements of the individual elements.

Figure 1 shows a Bewegungshemmnis 10, which is designed as a single element 12 which is resiliently adjustable from a small-volume storage condition into a large-volume active state. This large-volume active state is shown in perspective in FIG. The individual element 12 has peripheral edge elements 14, which are connected to one another, for example, by means of high-strength adhesive bonds 16.

In the large-volume active state, the marginal edge elements 14 form a cuboid with the adhesive bonds 16.

To adjust the individual element 12 from the small-volume storage state into the large-volume cuboidal active state, the individual element 12 has spring elements 18 which are connected to the marginal edge elements 14.

In the exemplary embodiment shown in FIG. 1, the individual element 12 has, for example, a volume of 1 dm ³ . In such a relatively small-volume individual element 12, the spring elements 18 extend between the adhesive bonds 16 in the spatial diagonals. In such a relatively small-volume individual element 12, there is no fixing at the point of intersection of the space-diagonal spring elements 18, but instead the spring elements 18 extend adjacent to one another without being connected to one another at the center of the space.

FIG. 2 shows, in a spatial representation similar to FIG. 1, a movement obstacle 10 formed by a single element 12, in which the peripheral edge elements 14 form a cuboid in the large-volume active state. In this single element 12, which has a volume between 30 and 50 dm ³ , for example, in the active state, the spring elements 18 do not extend in the room diagonals but in the area diagonals of the mantle of the cuboid.

In comparison with the embodiment according to FIG. 1, the embodiment of the single element 12 according to FIG. 2 has a larger number of spring elements 18, whereby a stronger spring effect is achieved.

Individual elements according to FIGS. 1 or 2 can be used, for example, to "pour" and block staircases, hallways, rooms or the like. In contrast, Figure 3 illustrates in a three-dimensional view a movement obstruction 10 with a number of each other to a wall or wall-like large obstacle side by side and superimposed individual elements 12, which are drawn in Figure 3 in large-volume active state. With such a major obstacle, volumes of several 100 m ³ can be realized in order to realize, for example, roadblocks, protective walls around squares or at endangered facilities, etc. Even such major obstacles can be compressed in the storage state small volume, folded or rolled together, so that they have only a small amount of space in the packed inactive storage condition.

Since the spring elements 18 suitably formed by preferably resilient wire segments 20 increase in thickness, i. With increasing wire diameter, tend to form permanent kinks by plastic deformation, and connecting points of more than two wire segments 20, which are not in a plane, are not compressible kink-free, so in the formation of the single element 12 according to Figure 1, the wire segments 20th in the center of the cuboid not connected to each other, even if that would be desirable for reasons of rigidity. In the embodiment according to FIG. 2, this results in that a maximum of two spring elements 18 are connected to one another at the corners of the cuboid. Consequently, a maximum of four and not all six sides of the cuboid can be clamped by means of surface-diagonal wire segments 20. For the large obstacle according to FIG. 3, it can be seen from the above that the four outside and the eight inside, wire segments 20 to be connected to a corner of a rectangle are placed parallel in the respective connecting point. This results in quarter-circular wire segments 20 in the individual elements 12, as shown in FIG. 4.

For individual elements 12 according to FIG. 1 or according to FIG. 2, a corresponding number of spring elements 18 are always required for clamping the desired rectangular shape. The structure of such individual elements 12 is not critical. However, it is the size of the individual elements 12, the desired bed height and the wire thickness of the spring elements 18 to be dimensioned such that the individual elements 12 unfold with sufficient certainty of small-volume storage condition in the large-volume active state. In the case of large obstacles from a multiplicity of elements 12 according to FIG. 3, under suitable circumstances, a spring element 18 will suffice if the dimensions are suitable per single element 12, as has been explained above in connection with FIG.

Although the force contribution of a quarter-circle-shaped wire segment 20 (see FIG. 4) during deployment or compression is not analytically calculable, here a finite element calculation based on calculating the force F as a function of the path S continues

Because although a purely elastic problem is to be treated, a non-linear calculation must be carried out because of the relatively large occurring shifts. The finite element calculation yields, for example, that per wire segment 20 with a wire diameter d = 0.1 mm at a travel distance S = 100 mm, a maximum contribution to the placement force of 5 × 10 ^-4 N arises. An estimate with this amount of Aufstellkraft shows that with such a Aufstellkraft no obstacles can be produced, which develop themselves with sufficient certainty. For this reason, the wire segment 20 is biased elastically, for example by a factor of 5. The resulting force curve F is then sufficient for erecting obstacles.

With the boundary conditions described above, a parameter value estimation for a large obstruction, such as illustrated in FIG. 3, is possible. In this case, depending on the diameter of resilient wire segments 20, the element sizes of the individual elements 12, the total weight of a large obstacle, for example, with an active volume of 200 m ³ , calculated its packing volume and the expansion factor during deployment. The parameter variations performed in the calculations are the number of spring elements 18 per element 12, the bias factor of Wire segments 20, as well as the total height of the desired obstacle. The aufspannbare size of the individual elements 12 increases with increasing wire diameter. In practice, parameters to be used are for element sizes between about 75 mm and 200 mm for wire diameters between about 0.15 mm and 0.6 mm. An increase in the bias of the wire segments 20 also allows larger individual elements 12, as a lower aufzuspannende total height of the large obstacle. An increase in the number of wire elements 20 has hardly any influence, because it would also have to be clamped a larger total weight.

It can be shown that large obstacles with only one wire segment 20 per individual element 12 can be constructed correspondingly lighter weight. Increasing the biasing force of the wire segments 20 also results in a lower overall weight, such as a smaller maximum height. Large obstacles with a wire segment 20 per single element (see Figure 4) show a minimum weight at a wire diameter of about 0.35 mm - and thus a single element size of 100 mm at a fivefold or 130 mm at a tenfold bias at a height of 2 m.

From the above results, for example, a weight optimization of the large obstacle with a Vorspannfaktor 10, a wire diameter of 0.35 mm, an element size of 165 mm and a height of 1 m. The large obstacle dimensioned in this way would weigh about 26 kg at a volume of 200 m ³ . This corresponds to 130 g per m ³ . The packing volume of the large obstacle amounts to approx. 23 dm ³ . The expansion factor of the large obstacle from the packed, ie inactive storage state in the unfolded, ie large-volume active state would therefore be 9000 for such an implementation example.

From the above it follows that movement inhibitors, for example, from microfibers, which can be clamped by elastic wire segments, can be realized. These movement barriers can be designed to self-erect from the inactive packed state.

Obstacles for persons and light vehicles, where high-strength fibers can be used, are, for example, impediments to movement of microfibers with wire segments according to the invention. These are arranged in networks and fixed at selected connection points, for example by means of adhesives.

The shipment of packed individual elements, as shown in Figures 1 and 2, can be done for example by ejection from cans or barrels. This ejection may be pyrotechnically assisted. The obstacles can also be spent as the active part of a non-lethal projectile over greater distances. This can be done with the help of a distance-limiting thrower. Another possibility is to introduce barriers according to the invention into a closed building or into a closed space. This can be done, for example, on the principle of "bunker fist", wherein a Vorhohlladung in the outer wall breaks free an opening through which the Nachschussladung containing the movement obstacles to be transferred, enters the room and these expels there.

Extended, ie wall- or wall-like large obstacles can by people or vehicles by rolling from a roll or spool core be interpreted. For the transfer of such major obstacles, a self-propelled robot can be used.

Lots of individual elements, as drawn in FIGS. 1 and 2, are suitable, for example, for securing persons in buildings or rooms or for blocking rooms, corridors, escape routes or the like. An increase in the inhibiting effect is conceivable if the individual elements of a "charge" are firmly connected to each other by longer pieces of fiber. The application of such beds of individual elements can passively be made in such a way that certain rooms or areas of space are blocked. However, it is also conceivable to throw individuals or groups of people with such obstacles in flight after ejection from a carrier, launcher or carrier projectile, so that they actively lead to an entanglement of persons or groups of people in the fibers. Likewise, a use in the form of a "non-lethal mine" is feasible, which emits movement inhibitors when approaching or touching by a person. For example, major obstacles can be designed to block streets or squares during violent demonstrations or to protect objects or groups of people. The barriers can block roads and paths for people and light vehicles such as bicycles, motorcycles or the like. Furthermore, it is possible to make waterways and harbor entrances impassable for ships, because suitable fiber barriers wrap for example in the propellers and block the drive.

References list

10

moving obstacle

12

Single element (out of 10)

14

Marginal edge elements (of 12)

16

Adhesive connections (for 14)

18

Spring elements (from 12)

20

Wire segment (from 18)

Claims (13)

1. Movement barrier having at least one single element (12), which can be developed resiliently from a small-volume storage state into a large-volume active state, the/each single element (12) being formed by mutually connected marginal edge elements (14), characterized in that the at least one single element (12), for its resilient development from the small-volume storage state into the large-volume active state, has spring elements (18), which are connected to the marginal edge elements (14).
2. Movement barrier according to Claim 1, characterized in that the marginal edge elements (14) of the at least one single element (12), in the large-volume active state, form a cuboid, and in that the spring elements (18) extend diagonally between the corners of the cuboid and are connected to this latter.
3. Movement barrier according to Claim 2, characterized in that the spring elements (18) extend in the spatial diagonals of the cuboid.
4. Movement barrier according to Claim 2, characterized in that the spring elements (18) extend in the surface diagonals of the envelope of the cuboid.
5. Movement barrier according to one of Claims 1 to 4, characterized in that the marginal edge elements (14) are formed by microwires, fibres or fibre bundles.
6. Movement barrier according to Claim 5, characterized in that the marginal edge elements (14) are combustible or perishable.
7. Movement barrier according to one of Claims 1 to 6, characterized in that the spring elements (18) contain wire segments (20).
8. Movement barrier according to Claim 7, characterized in that the wire segments (20) are formed by high-strength spring steel wires.
9. Movement barrier according to one of Claims 1 to 8, characterized in that the at least one single element (12), or a number of single elements (12) disposed side by side or one above the other to form conjointly a rampart-like or wall-like large barrier, in the storage state, are resiliently pressed together, folded together or rolled together in small volume within a packaging.
10. Movement barrier according to Claim 9, characterized in that single elements (12) can be ejected, with the aid of pyrotechnics, from can-like or barrel-like packagings.
11. Movement barrier according to Claim 9 or 10, characterized in that single elements (12) can be conveyed as the active component of non-lethal projectiles, by means of a range-limiting launcher, over considerable distances.
12. Movement barrier according to Claim 9, characterized in that single elements (12) are conveyed in the manner of a bunker buster, the follow-through grenade containing the single elements (12).
13. Movement barrier according to one of Claims 1 to 9, characterized in that the large barrier comprising a number of single elements (12) is wound onto a roll core or spool core.

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