MXPA98001673A - Innovation in a containment system - Google Patents

Abstract

An invention that is characterized by innovations in contact fastening systems that allow the displacement of the substrate and its grip structures to be carried out in the direction of its longitudinal axis, which, when leaving the mold, has surfaces that contain gripping surfaces. they do not show resistance to the exit. In turn, the innovation allows as an alternative for the manufacture of the contact fastening system that the extensions of the mold that make up the gripping surfaces pass through the substrate to form said agar surfaces

Description

INNOVATION IN SYSTEM PE SUBJECT BY CONTACT.

FIELD OF THE INVENTION This invention is characterized by presenting improvements in the architecture of contact fastening systems that at the same time facilitates its manufacture. Such improvement is characterized in that the mold that forms the fastening structures and the substrate thereof either by injection or by extrusion has the surfaces that conform to the clamping surfaces of the fastening system oriented in the same direction of exit or ejected from said substrate-supporting structure piece. Specifically, this improvement has as an application that of substituting the support posts by retaining walls with parallel longitudinal axes in the fastening systems that use poles. Traditionally said poles have variations in their diameter or trajectory to form for example an arrowhead or a hook, respectively, in order to interlock with the complementary substrate. By replacing posts with walls with path or thickness variations on the lateral axis of the wall that joins the substrate to the free edge of said wall, it is possible to manufacture fastening systems with greater ease by being able to be molded by injection or extrusion in a single step, the former being not possible in the case of the support posts. Another improvement in contact clamping mechanisms is that when being manufactured by the injection process, the clamping surfaces are molded directly by the surface of the mold thanks to the design of holes in the substrate of the clamping system that allow the passage of the portions of said mold that configure the gripping surfaces, thus achieving that of the structures that will usually take the form of walls or posts, together with their clamping surfaces, like the substrate of the system, are molded directly by the mold, thus achieving in a novel way this molding with a mold whose plates and components that are in contact with the molten material have a displacement along a single direction, which facilitates its manufacture and decreases the cost of production.

BACKGROUND OF THE INVENTION.

Contact fastening systems are known, which consist in the development of mechanisms that allow the subjection of one substrate with another by mechanically trapping the components of one of their substrates in the other. The best known case is the sailboat or contactel, which consists of multiple tiny hooks held in a substrate, which are going to get stuck in a series of tiny loops of another substrate. Said contactel is manufactured mainly from nylon in wire or other semirigid material such as wire, which is sewn to a cloth substrate. Said thread is basted on the substrate leaving an infinity of free loops which are subsequently cut so that the nylon wire or wire forms a hook in each of the interrupted loops. The substrate to which said hooks are attached is made of fabric from which it has been attempted that the fibers form an infinity of loops, to which the hooks of the other substrate are stuck. On the other hand, given the current need to repair and recycle, the shells of many products must be removable and without screws, which is why clamping mechanisms of this type are used. The innovation of replacing posts with walls in contact fastening systems allows the manufacture of this novel system by the injection or extrusion method in a simpler and cheaper way. It is important to note that being possible with the innovation of molding the gripping surfaces with an injection mold through existing holes in the same piece, enables the possibility of producing plastic pieces capable of being assembled together when being molded and with contact fastening systems integral to said piece and of more efficient architecture to which the current technique allows. With regard to the improvement that allows to mold a mold all the surfaces of a fastening system, including properly the surfaces of attachment or fastening, without this innovation at present it is necessary to thicken in a second step of molding the tips of the posts for create gripping or clamping surfaces.

OBJECTS OF THE INVENTION.

Taking into account the shortcomings of the prior art, it is an object of this invention to provide an injection mold or extrusion whose shaping surfaces of the gripping surfaces of the contact fastening systems tend to have a direction parallel to the direction the output or drop of the piece.

It is another object of the present invention to provide a contact fastening system that is capable of replacing the hooks that are produced by stitching the wire or nylon hooks to a substrate, by another substrate made of structures molded by injection or extrusion capable of efficiently adhering to the substrate substrate of conventional contactel. Another object of the present invention is to provide a contact fastening system whose gripping structures have a wall shape whose longitudinal axis is parallel with the longitudinal axis of the other walls of the same substrate, thereby achieving the production of said gripping walls with the conventional means of production of plastic molding called extrusion and injection. Another object of the present invention is to provide a contact fastening system whose clamping surfaces have been molded by projections of the mold that passed through holes in the substrate of said clamping system, thereby achieving the production of these systems of clamping by means of the plastic molding production system known as injection molding. It is another object of the present invention to provide a contact fastening system whose fastening structures are capable of fastening both to a substrate with holes of the appropriate diameter and to a substrate with gripping structures similar to those of said fastening system.

DESCRIPTION OF FIGURES.

FIG. 1 presents a three-dimensional view of a contact fastening system 1 consisting of a substrate 2 and a gripping structure 3 which is capable of maintaining a hold of a second substrate 4, by inserting its gripping structures 3 in the holes 5 of the second substrate 4 or by jamming said grip structures 3 in the grip structures 6 of a second substrate 4 as shown in FIGS. ÍA, IB and \ C. Understanding as gripping structures 3 and 6 those having gripping surfaces 7, and gripping surfaces 7 being defined those surfaces that make contact with the surface of another section of substrate to which the section itself is subject and which are capable of resisting the disinsertion of said two substrate sections as said gripping surfaces receive and at the same time produce the clamping forces by friction, compression and engagement with the surface of the substrate section with which they are attached, of course encompassing within gripping surfaces 7 those having the holes 8 in their perimeter surface 9 as shown in FIG. 1. Notice in FIG. ID that the launching or exit of said substrate 2 with its gripping structures 3 inside an injection mold 10 as well as an extrusion die 11 is possible thanks to the novel arrangement of means and the manner of ejection or throwing on the lateral surface 12 of the substrate 2 and of the gripping structures 3, wherein both the substrate 2 and the gripping structures 3 have only surfaces without entrapment 13 during their exit with respect to the longitudinal axis, the direction of exit being the one indicated in the arrow for either the injection mold 10 as well as for the extrusion die 11. Defining surface without entrapment 13 as that surface belonging to some substrate 2 or 4 with gripping structures 3 or to the gripping structures 3 which is not capable to prevent the exit or dumping of said substrate 2 or 4 or of the structures 3 of the mold 10 or of the die 11. The surfaces without entrapment simply do not present the sufficient the area of impact against the walls of the injection mold 10 in the launching as to avoid the exit of said substrate 2 or 4 with its corresponding grip structures 3. This is achieved because in its exit from the mold 10 or extrusion die 1 1, said substrate 2 or 4 with its corresponding gripping structures 3 does not find in its passage portions of the mold 10 or die 1 1 that prevent its ejection. Therefore said surfaces without entrapment are characterized by having a longitudinal direction parallel or away from the longitudinal axis, as shown in the arrows. The direction of exit of the substrate 2 with the structures 3 is marked by the direction of the arrow. By didactic effects only one of the two plates 14 that make up the part of the injection mold that make up the substrate 2 and structures 3 is shown, it being understood also for didactic purposes that in this case the plate not shown of the injection mold only molded the lateral edge 17 of the structures. In a preferred media arrangement, it is exemplified in FIG. 1 as the manufacture of walls on a substrate is capable of satisfying the conditions established in previous paragraphs. The walls 15 emerging from the lower substrate 2 preferably have a perpendicular position 16 with respect to the lower substrate 2. The walls 15 consist of side edges 17 and a free edge or end 18. Note that preferably the longitudinal axes 19 of the walls 15 follow trajectories parallel to each other. They are also adhered by their base 20 to the lower substrate 2 or higher 4. In turn, as shown in FIGS. ÍA, IB and ÍC the structures 21 emerging from the upper substrate 22 preferably have a perpendicular position 16 with respect to the upper substrate 4. The walls consist of side edges 17 and a free edge 18. Note that preferably the longitudinal axes 19 of the walls 21 follow parallel paths with each other. Each wall has a thickness 23, a height 24, a length 25 a path 26 of the longitudinal axis and a trajectory of the emergent or vertical axis 24, both paths being in FIGS 1 to FIG I D straight. On the free edges 18 of said structures 3 there may be gripping surfaces 7 produced by the variations in their thickness 23 for the purpose of facilitating their insertion between the walls of the other substrate as there is a decrease of said thickness 23 on the free edge 18 and an increase 28 of said thickness 23 before reaching said free edge or point 16 in order to make it difficult to disengage. Note that in the side view shown by FIG. The variations in the trajectory of the emergent axis 24 also produce gripping surfaces 7 without departing from the scope of this innovation. FIG. 1F shows a side view of a contact gripping system 1 which has been manufactured by the methods described above and which, as can be seen, are the gripping structures 3 themselves, which form the substrate 2 and 4. Being a fastening system by contact 1 made of elastic materials can be understood that as the substrate 2 approaches the substrate 4 the tips or ridges 40 are introduced into the spaces or valleys 41 formed by the grip structures 3 of the opposite substrate until they come into contact with each other the gripping surfaces 7 belonging to the substrates 2 and 4, with which the clamping is established. It is important to note that this type of system can have different gripping structures 3 between both sides of the same substrate, as exemplified by substrates 2 and 4. Note that the special gripping surfaces 42 allow the substrate 2 to grip and clamping of soft or deformable surfaces when the substrate 2 is pressed on said soft surface. FIG.1A, IB and 1C present a side plan view of the system with its substrates 2 and 4 already inserted together, with the additional feature that the thickness of the walls 23 together with the thickness 28 of the gripping structures 3 present a variation along the longitudinal axis 19. As can be seen, the lower substrate 2 has walls 17 with thickness 23 minor 29 in the view shown in FIG.1A and a greater thickness 30 in FIG.1C and the walls of the substrate 22 or 4 have a thickness 23 greater in the FIG.1A and a smaller thickness 29 in FIG.1C. Said variation in the thickness 23 of the walls 15 and 21 along the longitudinal axis 19 has the function of facilitating the disinsertion of the substrates 2 and 4 in the event that forces are exerted with direction along the longitudinal axis 19 of walls 15 and 21 and whose direction was from thickness 23 minor 29 to greater 30 in each substrate. On the other hand, if said forces go along the longitudinal axis 19 in the direction of greater thickness 30 at a lower thickness 29, the effect achieved is to hinder disinsertion by forcing a greater grip between substrates 2 and 4. FIG. . IB is a plan view of a cut 31 between substrates 2 and 4 when inserted as shown in FIG. 2A and 2C. In FIG. IB the thickness variation 23 of the walls 15 and 21 along its longitudinal axis 19 can be seen. Another effect obtained by virtue of the thickness variation shown along the longitudinal axes 19 is to facilitate ejection or ejection of the substrate molded together with the walls, of the injection mold. Note that this arrangement of means, as shown in FIGS. ÍA, IB and ÍC can also involve a variation in the size of the head or gripping structure 3. Of course, to increase the resistance to detachment of the gripping system by contact 1 due to forces on said longitudinal axis 19 of the walls 15 and 21, trajectories different from a line in the longitudinal axis path 26 of the walls 15 may be present as shown in FIG. 1, which is a top plan view of a substrate 2 with its corresponding gripping structures. 3 coming out of an extrusion die 11 that moves laterally in the direction of the arrows, so as to be able to manufacture the modality shown in this figure, in order to create said trajectory variation 26. To increase the resistance to the disengagements due to Pedendicular forces to the substrate, there may be trajectories different from those of a straight line, such as curvatures as well as angulations in the trajectory of the vertical axis or mergent 24, as shown in FIG. FIG. 1H shows a contact fastening system 1 with gripping structures 3 on both sides of its substrate 2 or 4. Note that if said fastening system is wound with a winding path 77 parallel to the longitudinal axes 19, it is possible to maintain the fastening between the grip structures with relative independence of the angle taken by the substrate along the longitudinal axis 19 when rolling, which solves an important problem in fastening systems 1. Even to reduce the deformation and slippage that can occur In the case of a winding, the grip structures 3 may be interrupted 32 periodically along their longitudinal axis 19, without interrupting the substrate 2 as shown in said FIG. 1 HOUR.

FIG. 4A presents another type of contact fastening system 1 which consists of at least one gripping structure 3 which consists of a piece 50 supported on a substrate 51 by means of bridges 52. Said piece 50 has extensions 53 that can be joined between yes on the base 54 of the piece 50. Said extensions 53 by means of variations in their thickness 55 form gripping surfaces 7 at their free end 56. Of course, the gripping surfaces 7 can also be created by generating an angulation in the trajectory of the emergent or vertical axis 24. The piece 50 is supported by the bridges 52 over the holes 57 of the substrate 5. As can be seen in FIG. 4B said holes 57 have the purpose in their design to allow parts of the injection mold 58 to project through said holes 57 in order to conform to the gripping surfaces 7 that are oriented or that "look" towards the substrate 51. Note that said holes 57 have their minimum dimensions defined by the projection of the gripping surfaces 7 on the substrate 51 in the direction of approach and separation of the extensions 58 of the mold 59 that form said gripping surfaces 7. Said structure 3 to be introduced into the hole 60 is forced to elastically deform the extensions 53 centripetally., which return to their original form once the gripping surfaces 7 of said structure 3 exceed in their introduction the edge 62 of the hole 60, then achieving a fastening of the structure 3 to the hole 60 when the gripping surfaces are in contact 70 of the gripping structure 3 with the gripping surfaces 71 perimetral to the hole 60. The gripping structures 3 further present as an innovation that the piece 50 can be elevated on the substrate 51, the surfaces of the holes 57 extending to the projection of said piece 50 on the substrate 51, achieving with this arrangement of means an orifice 72 that contains, turned into an orifice, the projections on the substrate of the gripping surfaces 57 plus the projections turned into hole 73 of said piece 50 on the substrate 51, without obviously including the projection of bridges 52.

Thanks to this, the extensions 53 of gripping structures 7 of other parts 50 with suitable dimensions of other substrates can use the perimeter surfaces 73 of the holes 57 as gripping surfaces 7. If a hitch with a high resistance to disinsertion is desired. , the thickness variation 55 is abrupt, as shown in FIGS. 4A and 4B. In this case, in order to disinsert the part 50 from the hole 60, it must be deformed to the extensions 53 by means of a simultaneous centripetal compression 61 on the extensions 53 starting from the insertion position that the gripping structure 3 already has in the hole 60 as shows FIG. 4C. Of course, this arrangement of means for the production of contact fastening systems 1 presented in the figures marked with the number 4 also allows the gripping structures 3 to be held together when belonging to different substrate sections when fastening each structure 3 of the gripping surfaces on the gripping surfaces of structures 3 of the opposite substrate as shown in FIG. 4F.

FIG. 4D and FIG.4E are top and bottom plan views respectively of the piece 50 integrated to a substrate 51 as presented above. FIG.5 presents the possibility of manufacturing by injection molding any structure 3 with its corresponding gripping surfaces 7 as part of an efficient and workable contact clamping system 1 provided that there are bridges or junctions 52 between the substrate 51 and the structure 3 and that on said bridges 52 does not overlap in the direction of movement 74 between the plates 14 of the mold a gripping surface 7 since the projections 58 of the mold could not advance in said direction to form said gripping surfaces 7. In the case of FIG.5 the parts 52 and 520 that make up the substrate act as stops against longitudinal slides of the structures that would follow a direction similar to that of the longitudinal axis. It is important to note that the media arrangement shown in FIG. 5 combines the two manufacturing innovations presented, so it is possible to demonstrate that both are usable to solve similar manufacturing problems if the substrate portion 521 is omitted. this novel arrangement of means is now possible the production by injection molding of grip structures 3 inclusive integrated to larger pieces. Of course the substrate 51 of said piece 50 and the substrate of the hole 60 can each be separately part of a larger piece and both substrates can contain at least one grip structure 3 and an orifice 60. This arrangement of means is very important for the union of housing of devices, screws can be dispensed with and disinserting said gripping structure 3 from the hole 60 by simultaneously and centripetally compressing the posts 53, which can easily be done with a tool at the tip of which there is a perforation in the form of cone with vertex towards the handle. FIG. 6 shows a contact fastening system 1 consisting of a substrate 2 which contains gripping structures 3 which have been formed on their surfaces with lower orientation 75 by the lower plate of the mold. Note that in a novel way in the manufacturing technology of contact fastening systems 1 the holes 57 designed in the substrate 2 have allowed the passage of portions 59 of the mold 58 through said substrate 2 for the shaping of the surfaces with lower orientation 75. As can be seen, it is possible to combine hooks 76 with points 78 to give the shape of harpoon 79 to the structures 3 that can also hold the conventional composite substrates on their surfaces of multiple loops used by the sailboat or conventional cocktail with the advantage that being these structures more rigid, the material from which the multiple loops are made in turn can be more rigid, thereby increasing the resistance to disinsertion and, on the other hand, the ability to penetrate more deeply of said grip structures 3 on substrates with multiple holes or loops. It is important then to note that with these novel manufacturing methods, many modalities are possible. Although in the foregoing specific embodiments of the present invention have been shown and described, it should be emphasized that numerous modifications to such embodiments are possible without departing from the true scope of the invention. The present invention therefore should not be restricted except by what is required by the prior art and by the spirit of the appended claims.

NOVELTY OF THE INVENTION CLAIMS.

Claims (28)

1. A contact fastening system characterized by consisting of a substrate and at least one grip structure integrated to said substrate, said structure having gripping surfaces that allow it to maintain a grip on a second substrate when contacting the surfaces of grip of the second substrate by means of friction, compression as well as engagement. Characterizing said contact fastening system in which at least the substrate containing the gripping structures together with said gripping structures is manufactured in a novel way by injection molding or by extrusion molding when being extracted from the injection mold or from the die of extrusion by the displacement of said substrate together with the gripping structures in the direction having its longitudinal axis when leaving the injection mold or die of extrusion. Such a mode of manufacture at the same time is characterized in that the surfaces without entrapment include the gripping surfaces of the substrate and of the gripping structures and that said surfaces without entrapment tend to have the direction of exit of the piece consisting of the substrate. with gripping structures of the injection mold, as well as, where appropriate, of the extrusion die a longitudinal direction parallel or away from the longitudinal axis that allows them not to have resistance to the exit of the substrate and gripping structures of the injection mold or of the die of extrusion in the process of abandonment of the injection mold or die of extrusion.

2. A contact fastening system according to the preceding claim characterized in that at least one gripping structure can be fastened when inserted into the holes of a second substrate, said second substrate lacking gripping structures.

3-A contact fastening system in accordance with the preceding claims wherein the substrates can be part of a larger part.

4. - Claim according to the preceding claims, wherein the gripping structures contain gripping surfaces due to the existence of variations in the thickness of said gripping structures.

5. - Claim according to the preceding claims, wherein the grip structures contain gripping surfaces because their emerging path is different from a straight line perpendicular to the substrate.

6. - Claim according to claims 4 and 5 in which the grip structures contain gripping surfaces because their emerging path is different from a straight line perpendicular to the substrate and the existence of thickness variations in said grip structure.

7. - Claim according to the preceding claims wherein the gripping structures contain gripping surfaces because they may have variations in thickness along the longitudinal axis, in order to prevent longitudinal slippage between substrates that are holding each.

8.-Claim according to all the previous ones where the grip structures emerge from both sides of the substrate, which allows the substrate to subject itself when said substrate is rolled on itself, as well as other substrates on both sides.

9. - Claim according to claim 8 wherein the grip structures maintain their longitudinal axis parallel to the winding direction of the substrate with the purpose that the curvature taken by the substrate to roll on itself does not significantly alter the distance between the tips or free edges of the gripping structures to each other, making insertion difficult.

10. -Rei vindication according to the preceding claim wherein the gripping structures have interruptions along its longitudinal axis in order that the surfaces of the lateral edges have a greater resistance to sliding of the gripping structures as along its longitudinal axis.

11. - Claim according to the previous ones wherein a substrate can simultaneously contain holes with perimeter gripping surfaces and structures with gripping surfaces.

12. - Claim according to claim 1 and 2 wherein a substrate forms a plane whose side views have a cyclic conformation, preferably sinusoidal tendency, being precisely the changes of direction of the plane what allows said plane to produce gripping structures with gripping surfaces on both sides of the plane, this media arrangement originating the capacity of subjection of said substrate by its tendency ad diminish the distance between the crests as well as the valleys of said substrate, trapping what is between said crests or valleys when the force that forced both substrates to approach and enter each other, may of course exist additional grip structures which emerge from the substrate plane similarly as already described in previous claims.

13. - Claim according to the previous ones where the longitudinal trajectory of the grip structures can be different from the straight line, to avoid undesirable longitudinal slipping.

14. - Claiming in accordance with the previous ones where obstructions, called stops, can be integrated into the substrate to the spaces between the grip structures to avoid sliding between substrates in a direction parallel to the longitudinal axes.

15.-Claim according to the previous ones wherein the substrate is elastic enough to allow the insertion and disinsertion of the grip structures by applying a tangential force to said substrate that allows it to increase its dimensions, and therefore the distance between the grip structures. But that does not allow the disinsertion without the application of the force that alters these dimensions.

16. - Claim according to the preceding claims wherein the substrates that are subject to each other have a decrease in thickness of the gripping structures along its longitudinal axis, preferably gradual, with opposite directions.

17. - Claim according to claims 1 to 15 wherein the substrates that are fastened together have a decrease in height of the emerging axis, preferably gradual, along the longitudinal axis in opposite directions.

18. Claim according to the previous ones wherein the substrates simultaneously have the characteristics described in claims 16 and 17.

19.- Claim in accordance with the previous ones where the grip structures can only be disinserted with the grip structures of another substrate by sliding longitudinally with each other.

20. Claim that consists of a contact fastening system consisting of a substrate and from which at least one gripping structure emerges on at least one of the surfaces of said substrate, characterized in that said fastening system in which there is no overlap of surfaces along the trajectory of displacement of the plates that conform to the substrate and gripping structure, due to the existence of holes in the substrate and gripping structure of suitable dimensions to allow passage of the mold portions that are necessary to shape the surfaces facing the mold plate that forms them during their production process, said surfaces including the gripping surfaces of the fastening system, but at the same time allowing said holes that the gripping structures remain fixed to the substrate by means of bridges which join said substrate with said gripping structures.

21. - Claim according to the preceding claim wherein the contact fastening system is additionally removed the surface of the substrate under the grip structure with the exception of the bridges, which increases the dimensions of the holes described in the The previous claim further characterizing the grip structure to be elevated on the substrate, so as to allow the extensions of the grip structure of another substrate to pass through said holes to be more easily inserted into the existing holes.

22. - Claim according to claim 20 and 21 wherein instead of a substrate in the form of plane from which structures emerge, the substrate can take any form in space so the manufacturing process of the gripping surfaces involves orifices in the substrate, which are necessarily traversed to mold the gripping surfaces by means of projections of some of the mold plates that are used for their manufacture.

23. - Claim according to claims 20, 21 and 22 wherein the gripping structures emerging from the substrate are capable of being held by means of their gripping surfaces with the gripping surfaces of other gripping structures, and may even belong all the grip structures to the same plane folded on itself.

24. -Rei vindication according to claims 20 to 23 wherein the gripping structures emerging from the substrate are fastened to another substrate by inserting in the holes of said other substrate and gripping the gripping surfaces of the gripping structures with the perimeter surfaces for gripping the holes.

25. - Claim according to claims 20 to 24 wherein the substrates can be part of a larger piece, preferably of a cover or shell.

26. Claim according to claims 20 to 25 wherein the gripping structures are partially vertically sectioned from their free end or edge to ensure that their extensions are deformed more easily when inserted into another portion of substrate.

27. - Claim according to claims 20 to 26 wherein the grip structures at their ends or free edges consist of decreases in thickness that allow substrates to penetrate more easily and that orient the direction of lateral deformation of the grip structures in the insertion process.

28. - Claim according to claims 20 to 27 where the agape structures consist of hooks, for better grip with the substrates, including those that contain multiple loops on their surface. 29. - Claim according to claims 20 to 28 wherein the agape structures can present combinations of the modalities described in claims 26, 27 and 28. 30. -Rei vindication in accordance with the reiviniciaciones 20 to 29 where the Agape structures can exist on both sides of the same substrate, it being understood that if the projection of the agape structures belonging to one side of the substrate with the gripping structures on the other side of the substrate is superimposed, no surface of said structures with orientation to the substrate it coincides with the contralateral, thus maintaining the possibility that the structures of both sides can be molded according to the technique and principles described in claims 20 to 29. 31. - Claim according to claims 20 to 30 wherein a substrate can present gripping structures without having holes for insertion of said surfaces of a garre. 32. - Claim according to claims 20 to 30 wherein a substrate may have holes for the insertion of agape structures without presenting said grip structures. 33. - Claim according to claims 20 to 30 wherein a substrate can have gripping structures as well as holes for insertion of said agape structures.