WO2009056718A2

WO2009056718A2 - Wire netting comprising multiple wires having multiple joining points

Info

Publication number: WO2009056718A2
Application number: PCT/FR2008/051858
Authority: WO
Inventors: Zeno Antoniol; Bernard Ponchon
Original assignee: Mpb
Priority date: 2007-10-31
Filing date: 2008-10-14
Publication date: 2009-05-07
Also published as: FR2922791B1; EP2222926A2; FR2922791A1; WO2009056718A3

Abstract

The invention relates to wire netting comprising multiple wires (1, 2) having multiple joining points. The netting comprises at least a plurality of first wires (1) and a plurality of second wires (2), the cross section of which is smaller than that of the first wires (1). A first wire (1) has a housing (3) designed to receive a portion of the second wire (2) at a joining point between a first wire (1) and a second wire (2). Wire netting of this kind may in particular be used for making security barriers, wire mesh, baskets or trolleys.

Description

Wire mesh comprising a set of wires having a set of assembly points

The present invention relates to a grid and a grid, a mesh, a basket or a transport carriage and / or storage comprising a portion of mesh.

It is known to make grids comprising a set of meshes formed by the crossing of two sets of metal son in two directions. These rigid wires can be assembled by various methods. According to a first method, these son can be interlaced, and welded or clamps on a profile at the periphery of a portion of wire.

According to another possibility, the son series in both directions are superimposed, and welds are made at the contact points between the son of the two series and on a profile at the periphery of the mesh portion.

It appears that the grids described above have the drawbacks of having sharp sharp corners at the end of the wires at the periphery of the grid portion and / or at the center thereof, these angles possibly being existing. initially or come from the breaking of a weld.

The presence of these sharp and sharp angles causes a danger of injury for an operator and therefore a risk of contamination.

In addition, the roasting structures presented above have areas with recesses or re-entrant angles, especially at cross-threads, whether these crossings are braided or welded, and at the welds or other attachment on the periphery. the toasting portion. These areas are difficult to access for cleaning, or decontamination. It appears that the aforementioned disadvantages are particularly disadvantageous in medical uses of grids, baskets or trolleys for transport and / or storage including such a grid.

In order to avoid injuries caused by sharp angles at the son fixing points on the periphery of the mesh portion, it is possible to achieve a toasting portion bordered by a U-shaped profile providing peripheral protection. It appears however that this solution does not eliminate the risk of injury associated with breakage at the attachment points in the center of the grid portions. In addition, the U-shaped structure forms with the ends of the threads recesses that complicate washing and sterilization.

It is also possible to cover at least partially plastic son naturally rounding the free ends of these son.

In the case where the son have been covered with plastic, washing, sterilization or decontamination at high temperature is limited to the temperature allowed by the polymer, so often well below that required for the realization of effective sterilization or decontamination .

The present invention aims to solve all or part of the disadvantages mentioned above by providing a grid structure whose washing and decontamination are facilitated and limiting the risk of injury to an operator.

To this end, the subject of the present invention is a screen comprising a set of wires having a set of assembly points, characterized in that the screen comprises at least a first wire and a plurality of second wires whose section is smaller than that of the first son or son, and in that at an assembly point between a first wire and a second wire, the first wire comprises a housing for receiving a portion of the second wire.

Thanks to the provisions of the invention, there is no or very little sharp angle at the connection points between son. Indeed, the assembly points are not constituted in areas where the son sections are tangent, but in intersecting areas of these sections at which the angles formed have larger values. In addition, the end of the son can be received in a housing and thus avoid creating an asperity likely to injure an operator.

The risk of jamming fibers during washing or wiping at the assembly points is greatly reduced due to the absence of re-entrant angles.

Cleaning, decontamination and sterilization are significantly improved due to the low retention of materials other than that of the grid or basket. According to one possibility, the grid comprises at a point of assembly a housing opening on either side of the first wire.

According to another possibility, the grid comprises at a point of assembly a blind housing. Advantageously, the grating comprises at an assembly point a first and a second housing in a first wire intended to accommodate two second wires respectively in the two housings, the axes of the two housings being inclined relative to one another. 'other.

The present invention also relates to a grid, a trellis, a basket or a trolley for transport and / or storage comprising a roasting portion as described above.

In any case, the invention will be better understood from the description which follows, with reference to the appended schematic drawing showing, by way of non-limiting example, an embodiment of a grid, a grid and a basket according to the invention.

Figure 1 is a sectional view of a cross of two son of a mesh element according to the invention.

Figure 2 is a sectional view of a second type of attachment point between two son of a mesh element according to the invention. Figure 3 is a sectional view of a third type of attachment point between two son of a mesh element according to the invention.

Figure 4 is a sectional view of a detail of a bend made on a wire.

FIG. 5 is a sectional view of the detail of FIG. 4 along a sectional plane perpendicular to the section plane of FIG. 4.

Figure 6 is a sectional view of a detail of an edge of a structure comprising two perpendicular walls made from a mesh element according to the invention.

FIG. 7 is a sectional view of the detail of FIG. 6, along a sectional plane perpendicular to the section plane of FIG. 6.

Figure 8 is a top view of a grid comprising a mesh portion according to the invention.

Figures 9 and 10 are two side views of a basket, the side walls and the bottom are made of grid portions according to the invention. As shown in Figures 1 to 10, a grid according to the invention comprises a set of son 1, 2 having a set of connection points between son, at crossings between son and / or peripheral attachment points to the toasting portion. According to a characteristic of the invention, at an assembly point between a first wire 1 and a second wire 2, the first wire 1 comprises a housing 3 intended to receive a portion of the second wire 2.

The section of the first wire 1 is larger than those of the section of the second wire 2. The housing 3 has a section of complementary shape to that of the second wire 2, and inner dimensions substantially equal to the outer dimensions of the second wire 2.

The housing 3 has at least one section which completely surrounds a cross section of the second wire.

Usually, the son used are of circular section, like those shown in Figures 1 to 10. According to variants, other sections may be used.

As shown in Figure 1, a first type of assembly point is constituted by a cross 4 between a first wire 1 of diameter d1 and a second wire 2 of lower section. The first wire 1 comprises a housing 3 crossing opening on either side of the first wire 1.

The housing 3 is of circular section and its inner diameter substantially corresponds to the outer diameter d2 of the second wire 2. The clearance between the second wire 2 and the housing 3 of the first wire 1 is as small as possible but sufficient to allow easy assembly from the whole. The second wire 2 is received in the through housing 3 and thus assembled therewith.

As shown in FIGS. 2 and 3, a second type of connection point between two wires is constituted by a peripheral fixing point 5. In this case, a first wire 1 which delimits the grid portion, having a diameter d1 comprises a housing 3 in which is received the end of a second wire of diameter d2. The housing is as before with an inner diameter substantially equal to the outer diameter of the second wire 2. As previously, the clearance between the second wire and the housing of the first wire is as small as possible but sufficient to allow the easy assembly of the wire. 'together. According to the embodiment of Figure 2, the housing 3 in the first wire is blind or non-through. This arrangement is advantageous because it allows to create no relief or bowl on the wall of the first wire opposite the opening of the housing between which between the second wire 2. According to another embodiment shown in Figure 3, it is possible to make a housing 3 through. This is sometimes made necessary by assembly constraints. In this case, the opening 6 of the housing through which the second wire does not exit is closed by means not shown in the figure, for example by shaving the wire, by a plug inserted into the opening, by providing material, especially by welding or shrinking, or any method for closing the opening 6 without creating relief or deep bowl on the wall of the first wire 1.

Fastening means of the second wire are used to keep the second wire in position in the housing. According to variants, the second wire 2 is fixed for example by pinching, welding or gluing.

As shown in FIGS. 4 to 8, a grating according to the invention also comprises portions of angles 7 which make it possible to modify the orientation of the grating to obtain roasting portions extending in several planes. According to a first embodiment shown in FIGS. 4 and 5, the corner portion is constituted similarly to an assembly point 4 by crossing a first wire 1 and a second wire 2, the orientation of the wire being modified by making a bend 8 on the second wire 2 near the crossover point 4. According to a second embodiment of a corner portion 7 shown in Figures 6 and 7, the portion of angle 7 is formed by providing first and second housings 3a, 3b in a first wire 1 with a diameter greater than the diameter of two second son 2a, 2b intended to be housed respectively in the two housing 3a, 3b, the axes two housing 3a, 3b are inclined relative to each other. Preferably, the two housings 3a, 3b are non-traversing. However, in the case where it is necessary for a housing to open for assembly reasons, this housing may be closed as described above.

It should be noted that the first wire 1 comprises a plurality of first and second housings 3a, 3b intended to accommodate a plurality of second son 2a, 2b to make a corner portion 7. The first wire 1 then constitutes an edge of the piece thus formed.

The inclination between the two axes of the second son 2 in a corner portion 7 may be for example 90 ° to achieve for example a corner portion 7 between a side wall of a basket and its bottom made in the same serving of wire.

The manufacture of a mesh portion as described above can be carried out by piercing the housings in first son 1 by removal of material or deformation thereof, in particular by drilling, electroerosion or stamping, and then introducing the second son 2 of smaller diameter in the corresponding housing 3.

The use of such a grid finds application in the production of mesh panels, trellises, baskets, trolleys, envelopes, fences. As shown in FIG. 8, a grid 8 is constituted by a set of two series of first wires 1 and second wires 2 comprising crossover assembly points 4, a peripheral edge wire 10 on which a set of peripheral attachment points with the ends of the first son 1 and the second son 2. In the case of the peripheral attachment points between the border wire 10 and the first son 1, the attachment is similar to that made between the first and second son 1 and 2, considering that the edge wire 10 is the first wire of greater diameter and the first son 1 are second son of smaller diameter. It should be noted that the lattice is a particular type of grid in which the meshes formed by the threads are oriented obliquely with respect to the edge threads. As shown in Figures 9 and 10, a basket 9 may further comprise corner portions to obtain a grid extending in several planes. A carriage is constituted by all previous subsets combined.

The materials frequently used for producing such grids are stainless steel, brass, copper, aluminum or more generally any metal or ceramic-based material. It goes without saying that the invention is not limited to the embodiments of this seal, described above as examples, but it encompasses all variants.

Claims

A grid comprising a set of wires (1, 2, 10) having a set of connection points (4, 5, 7), characterized in that the grid comprises at least a first wire (1, 10) and a plurality of second wires (1, 2) whose section is smaller than that of the first wire or wires (1, 10), and in that at a connection point (4, 5, 7) between a first wire wire (1, 10) and a second wire (1, 2), the first wire (1, 10) has a housing (3) for receiving a portion of the second wire (1, 2).

2. Grid according to claim 1 comprising at an assembly point (4, 5, 7) a housing (3) opening on either side of the first wire (1, 10).

3. Grid according to one of the preceding claims comprising at a connection point (4, 5, 7) a housing (3) blind.

4. Grid according to one of the preceding claims comprising at an assembly point a first and a second housing (3a, 3b) in a first wire (1) for housing two second son (2a, 2b) respectively in the two recesses (3a, 3b), the axes of the two recesses (3a, 3b) being inclined with respect to one another

5. Grid (8) comprising a toasting portion according to one of the preceding claims.

6. Basket (9) comprising at least one wall portion having a portion of mesh according to one of claims 1 to 4.

7. Transport and / or storage trolley comprising at least one wall portion comprising a portion of mesh according to one of claims 1 to 4.

8. Lattice comprising at least one wall portion having a portion of mesh according to one of claims 1 to 4.