EP0045337A1 - Connecting a subtle material to a structure - Google Patents

Abstract

This process consists of creating, by any means, rigid parts such as (2) in the flexible material (1) and engaging them in a recess such as (3) made in the rigid part (4), as indicated in Figure 1, so that the tension in the part (1) causes the bracing of (2) against the walls of (3). The description contains several exemplary embodiments either of rigid parts of the flexible material or of connecting recesses, and shows that it is possible to produce such recesses in such a manner as to permit easy disconnecting, even in the presence of a tensile force exerted on the flexible material. <IMAGE>

Description

The present invention relates to a method for hanging a flexible material, shaped into wire, tape or sheet, on a rigid part, and concerns all the fields of activity where such a problem must be resolved, nar example: handling (hanging of slings), packaging (fixing of ribbons or rolls on reel, as for typewriters), furniture (fixing of panels, curtains, canvases of hamecs, etc.), leather goods, saddlery and tools (kits and various cases that can be worn attached to the belt), sports equipment (quiver, sails, hanging of tensioners, attachment of ropes on capstan drum); door interlocker, etc. The description of these various fields of possible use constitutes only a list of examples intended to make the generality of the use of the invention understandable, and cannot be understood as a limiting and restrictive enumeration of its field of applicability.

In the case where a permanent assembly is carried out, such as for example by nailing or sewing around a part of the support, it is a question of fixing, and not of attachment which supposes by definition that the assembly can be dissociated quickly for simple operations.

The current technique, at least in the strict sense of the process itself, has been in the public domain for a long time and calls upon various devices which can essentially be classified into two families, depending on whether the material is provided. flexible either hooks or eyelets, one or the other, attached and fixed by any method such as gluing, screwing, tightening, crimping, welding, etc ...

These devices have the effect of distributing the bonding forces between the flexible material and the rigid part in a limited number of attachment points, around which the flexible material undergoes significant fatigue due to the poor distribution of internal stresses which cause it to deform and break.

The invention is characterized in that, at each of its attachment points, the material (1), flexible in the direction of FIG. 1, is made rigid over a certain portion (2) of its dimension along the plane of the figure, and that this rigid part (2) is introduced into the cell (3) of a rigid part (4). The length, in the plane of the rigid part (2) is less than the depth of the cell (3) but much greater than its width, so that the traction exerted upwards on the upper part (1) of the material flexible has the effect of applying this material on the right edge of the cell (3), and this traction has the effect of bracing the rigid part (2) against the left wall of the cell (3). The more the equilibrium position of this rigid part (2) is close to the axis of the cell (3) according to the plane of the figure, the less the bending forces which it must balance by its rigidity.

The invention is characterized by the mere fact of making the flexible material rigid in one of its parts such as (2) defining a point of attachment, and not by the means used to obtain this result. One can simply propose as an example among all known methods, and without this list being limiting or restrictive, the addition of pieces of rigid material by gluing, sewing, crimping, welding, introduction between two thicknesses the flexible material (1), or even by forming within the texture of the flexible material, if it can be penetrated by capillary action or under ^p res- sion by means of a liquid paste then transformed into rigid material by any physico -chemical whatsoever, and in particular by polymerization or thermosetting.

Figure 1 shows a section of a point of dislocation but the dimension of the socket and the parts in contact is not specified in the direction porpendiculaipe in the plane of the figure. From this point of view, it should be specified that, if the flexible material (1) is in the form of a sheet or, at least, of a fairly wide gold ribbon or strap, that is to say -to say that its dimension perpendicular to the plane of the figure is at least of the order of ten times its thickness represented in the plen of the figure, its rigidity in a plane perpendicular to the plane of the figure is sufficient for that the cell (3) does not need side walls above and below the plane of the figure.

On the other hand, if the flexible material (1) is in the form of wire or cable, that is to say that its dimension perpendicular to the plane of the figure is approximately equal to its thickness measured in the plane of Figure 1, it is absolutely necessary that the cell (3) has side walls above and below the plane of Figure 1 to guide and maintain the rigid part (2) in the plane of the figure.

As it is, Figure 1 shows a piece (4) attached to a piece (1) of flexible material; but by symmetry about a horizontal axis contained in the plane of the figure, the alveolus (3) would come on top of the part (4) and the part (1) of the flexible material would hang, hooked to the part ( 4). More generally, whatever its orientation, FIG. 1 represents the attachment of the flexible material 1 on which a traction is exerted tending to move it away from the part (4) in a direction parallel to the axis of the cell (3) and in a direction such that this traction applies the flexible material to the edge of the cell (3) and causes the bracing of the rigid part (2) against the edge of the opposite cell (3) to the previous one.

As only the edge of the cell and the wall opposite it play a role in the hanging process, we can advantageously use the arrangement of Figure 2, where the part (5) plays the role of edge cell and the part (6) the role of wall opposite this edge. The flat strap or the ribbon is, in this case, engaged astride this part (5), the part of the flexible material subjected to the traction being situated outside, and oriented downwards or upwards, the part shown in Figure 2 being symmetrical by construction.

FIG. 3 which represents a portion of tube (7) fixed by gluing or welding to a part (8) is the counterpart of FIG. 2 in the case, no longer of a strap or of a ribbon, but of a wire or cable. In this case, if the material (8) is sufficiently resistant and if it can be pierced with a through hole sufficiently close to its outer surface, the attached tube (7) can very well be replaced by such a hole.

FIG. 4 represents a device for attaching to a belt a piece of flexible material (9), for example a case or quiver, terminated by a part (10) made rigid in the plane of the figure. The rigidity in the plane of Figure 4 is mandatory for the attachment, but the flexibility of the part (10) around an axis contained in the plane of Figure 4 may be necessary to follow a curved wall in the same meaning. For this, the part (10) (fig. 4, fig. 5 and fig. 6) is made rigid in a single plane by means of mutually parallel reinforcements such as (11), which allow the part (10 ) around a vertical axis of Figure 5, but not around a horizontal axis of this same figure.

Figure 6 shows a section seen from above of the attachment made by means of parts such as (9), (10) and (11) on a bar such as (5), in the case where the wall (6) of Figure 2 is convex.

Figures 7 and 8 show another embodiment of a hooking of a flexible material (13), (14) of which a part (15) has been made rigid in the plane of the figure, on a rigid part (12), (16). In this case, the traction exerted on the part (13) of the flexible material is transmitted by the rigidity of the part (15) which causes the jamming of the free strand (14) in the acute dihedron of edge perpendicular to the plane of the figure. , which is formed by the part (16) and the lower lip (12) of the attachment socket. Figure 7 shows this latching in the locked position and Figure 8, the same during engagement or disengagement, the part (13) not being subjected to traction.

Figure 9 is a variant of the figure? where, the rigid part (15) not being able to slide along the flexible material under the action of the traction exerted at (13), the pinching exerted between (16) and (12) of FIG. 7 does not is no longer necessary and a simple bracing of the end of the rigid part (15) against the bottom of the cell is sufficient.

For example, in the case of FIG. 7, the rigid portion (15) could be produced by means of a sheath of rigid material in which the flexible material can slide. In the case of FIG. 9, the rigid portion (15) would for example be produced by bonding rigid plates to the flexible material, or else by threading rigid plates into gussets formed by the flexible material.

In FIGS. 7, 8, 9, 10 and 11 has been shown, delimited by a dashed line, the zone of clearance necessary for detachment, which is produced by extraction of the rigid part of the flexible material from the catching alveolus . For this, the tension exerted on the part (13) must be released in the case of FIGS. 7, 8 and 9, and the extraction of the rigid part (15) from the cell is obtained by pulling on the part (14) of the flexible material.

In the case of FIG. 10, the lower part of the attachment socket consists of a rigid part (18) with a cross-section in the plane of the figure, the dimension of which is perpendicular to the plane of the figure is the same as that of the parts (13), (14), (15) and (17), and which is movable around an axis (19) integral with the support (17). The axis (19) perpendicular to the plane of the figure is located as close as possible to the rectilinear wall of the part (17), but at a distance at least equal to the sum of the thickness of the rigid part (15) and free strand (14).

The traction on the part (13) presses the part (15) and the strand loop (14) on the horizontal wing of the bracket (18) causing the part (15) and the strand (14) to be pinched between the vertical wing of the bracket (18) and the part (17). A moderate traction exerted on (14) allows the rotation to the right of the square (18) around its axis (19) and the release of the rigid part (15), even in the presence of a traction on the part ( 13).

FIG. 11 responds to the same explanations of operation as in FIG. 10, with the exception of the replacement of the rigid part (15) of the flexible material with a piece (20) of rigid material against which the flexible material is simply applied under the effect of the traction exerted at (13), and which causes pinching of the flexible material and its application against the rigid part (20) along the two branches of the bracket (18) and the part (17).

The profile shown in FIG. 11 for the rigid part (20) constitutes only one example of embodiment of an apparently rigid zone, on the flexible material, simply by its application under tension along a rigid part (20). , with which he is in no way linked and of which he is separates spontaneously when it comes off when the square is "opened" by rotation to the right by pulling on the free part (14).

• 1°) suppression de pièces rapportées de formes complexes, telles que crochets ou oeillets ;
• 2°) répartition uniforme des efforts supportés par le matériau souple ;
• 3°) facilité de réalisation industrielle ;
• 4°) grand choix de moyens de réalisation ;
• 5°) domaine d'application très vaste.

Compared to the prior art, the invention provides the following advantages:

• 1) removal of attachments of complex shapes, such as hooks or eyelets;
• 2) uniform distribution of the forces supported by the flexible material;
• 3) ease of industrial production;
• 4) large choice of means of realization;
• 5) very wide field of application.

Claims (5)

1. Method for attaching to a rigid piece of flexible material in the form of wire, tape or sheet, consisting in creating in this flexible material rigid parts causing an bracing of these rigid parts between the edge and the walls of attachment cells made in the rigid part. 2. Hanging cell model produced by a bar parallel to a flat (fig.2) or curved (fig.6) wall. 3. Model for hanging a load (case for example) on the waistband of a garment. 4. Model of hooking cell with bottom in movable stopper in the form of a square (18) articulated around an axis (19) (fig. 10 and 11) allowing the release, even in the presence of significant traction exerted on the part (13). 5. Method for wedging the flexible material in the attachment socket by simple application of a rigid piece (20), as shown in FIG. 11.

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