EP0090726A1 - Bundling strap - Google Patents

Bundling strap Download PDF

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Publication number
EP0090726A1
EP0090726A1 EP83400600A EP83400600A EP0090726A1 EP 0090726 A1 EP0090726 A1 EP 0090726A1 EP 83400600 A EP83400600 A EP 83400600A EP 83400600 A EP83400600 A EP 83400600A EP 0090726 A1 EP0090726 A1 EP 0090726A1
Authority
EP
European Patent Office
Prior art keywords
flexible strap
engagement
extends
retaining cleat
bar
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.)
Withdrawn
Application number
EP83400600A
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German (de)
French (fr)
Inventor
Jacques Cheron
Marc Gosse
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.)
Legrand SA
Original Assignee
Legrand SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Legrand SA filed Critical Legrand SA
Publication of EP0090726A1 publication Critical patent/EP0090726A1/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D63/00—Flexible elongated elements, e.g. straps, for bundling or supporting articles
    • B65D63/10—Non-metallic straps, tapes, or bands; Filamentary elements, e.g. strings, threads or wires; Joints between ends thereof
    • B65D63/1018—Joints produced by application of integral securing members, e.g. buckles, wedges, tongue and slot, locking head and teeth or the like
    • B65D63/1027—Joints produced by application of integral securing members, e.g. buckles, wedges, tongue and slot, locking head and teeth or the like the integral securing member being formed as a female and male locking member, e.g. locking head and locking teeth, or the like
    • B65D63/1063—Joints produced by application of integral securing members, e.g. buckles, wedges, tongue and slot, locking head and teeth or the like the integral securing member being formed as a female and male locking member, e.g. locking head and locking teeth, or the like the female locking member being provided with at least one plastic barb
    • B65D63/1072—Joints produced by application of integral securing members, e.g. buckles, wedges, tongue and slot, locking head and teeth or the like the integral securing member being formed as a female and male locking member, e.g. locking head and locking teeth, or the like the female locking member being provided with at least one plastic barb the barb having a plurality of serrations

Definitions

  • the present invention relates generally to clamps of the type comprising, in one piece, on the one hand a flexible strap, which is provided on the surface with transverse locking notches, and on the other hand a closure, which has a passage suitable for engaging in a closed loop of the flexible strap, and which, in association with said passage, is fitted with an articulated retaining cleat or finger capable of cooperating in retaining with the transverse locking notches of said flexible strap, said retaining cleat comprising in practice for this purpose at least one tooth and, preferably, a plurality of teeth, allowing it to come into engagement with said transverse notches for blocking the flexible strap.
  • tangential head in which, from its inlet outlet, upstream in the direction of engagement of the flexible strap, to its outlet outlet, downstream in said direction of engagement, the passage of the closure head extends substantially parallel to the flexible strap, so that, when it is engaged in this closure head, the flexible strap closes parallel to itself to the right of it.
  • Such a clamping device is generally satisfactory, in particular when it is used under normal conditions of use: once its flexible strap is closed in a loop on the objects to be connected together, the cleat or retaining finger opposes normally effectively with any retrograde movement of this flexible strap likely to loosen the support.
  • the flexible strap When the flexible strap is of moderate length, or when, of great length, it is closed on objects the assembly of which generally has a diameter suitable for such a length, this heating remains moderate, in particular because the relative movement of the strap flexible which gives birth to it is therefore necessarily short-lived.
  • the flexible strap has a relatively large length, and when it is closed on objects generally forming an assembly of relatively reduced diameter compared to such a length.
  • the heating of the upstream tooth of the retaining cleat is then much more accentuated, both because of the fact that the relative movement of the flexible strap which gives rise to it is then of more prolonged duration, than because of the fact that, to reduce the duration of this movement, the operator naturally tends to accelerate it.
  • this upstream tooth can then be sufficient to cause, at least partially, the fusion
  • the upstream tooth thus at least partially melted is by itself prevented subsequently from operating properly its retaining office with respect to the transverse notches for blocking the flexible strap, the molten material which results therefrom, entrained by the flexible strap, inevitably clogs at least partially the teeth of the retaining cleat located further downstream in the direction of engagement of this flexible strap, which also leads them to no longer be able to cooperate later so suitable with said transverse notches for blocking the flexible strap.
  • the present invention particularly relates generally to a provision making it possible to avoid this drawback.
  • a clamp of the kind comprising, in one piece, on the one hand a flexible strap, which is provided on the surface with transverse locking notches, and on the other hand a head of closure, which has a passage suitable for engaging in a closed loop of the flexible strap, and which, in association with said passage, is fitted with an articulated retaining cleat or finger capable of cooperating in retaining with the transverse locking notches of said flexible strap,
  • this clamping collar being, according to a first aspect, characterized in that, upstream of the retaining cleat in the direction of engagement of the flexible strap, the closure head comprises, projecting from the same side as said retaining cleat, at least one boss, said below for convenience, spacing boss, adapted to temporarily urge the flexible strap in the direction opposite to said retaining cleat during said engagement thereof.
  • the closure head comprising, in a manner known per se, longitudinally, in the direction of elongation of the flexible strap, two lateral flanges, and, transversely, at least two bars connecting the one to the other remotely one of the other, said side flanges, and the retaining cleat extending freely from one of said bars, two spacing bosses are provided, which are each respectively projecting from said side flanges, and, these bosses spacing being arranged in the corner areas formed between the lateral flanges and the bar from which extends the retaining cleat, each of them has, parallel to the direction of elongation of the flexible strap, an oblique face , which extends at an angle from the flange concerned to said bar.
  • the spacer boss or bosses according to the invention subject the flexible strap, during the engagement of the latter, to a transverse force tending to spread this flexible strap of the retaining cleat, and thus making it possible to spare the teeth thereof, and more particularly its upstream tooth, so that, at the end of said engagement of the flexible strap, said teeth advantageously retain all their integrity, even when , due to its length, this engagement is relatively prolonged and / or relatively rapid.
  • the spacing bosses according to the invention being, by the very nature of the synthetic material which constitutes them, retractable, for example by erosion or crushing, and preferably having overall dimensions sufficiently reduced to be effectively thus retractable, they are wholly or almost entirely eliminated at the end of the closing on itself of the flexible strap around the objects concerned.
  • the retaining cleat, duly spared, can then assume its full retaining function, without the risk of untimely loosening of the flexible strap which it is responsible for maintaining.
  • the spacing bosses according to the invention somehow play, with respect to the teeth of the retaining cleat, the role of a "fuse” sparing these teeth from overheating due to the relative movement of the strap flexible during its engagement and taking direct charge of this heating.
  • bosses capable of urging the flexible strap in the direction of the corresponding retaining cleat, and on the other hand these bosses are intended to intervene in permanence, and, by their dimensions, they are effectively adapted for this purpose.
  • retractable spacing bosses capable of temporarily urging the flexible strap in the direction opposite to the retaining cleat.
  • the effectiveness of the retainer cleat may still be compromised.
  • the present invention also generally relates to a provision making it possible to avoid this drawback.
  • the retaining cleat has a protruding cord, which extends transversely at its free end, and which preferably extends also longitudinally on at least part of its lateral faces, in the median zone thereof.
  • This cord which has no particular mechanical function within the clamping collar concerned, advantageously takes care of any manufacturing defects due to the fact that, as mentioned above, during the molding of the clamping collar, the retaining cleat is located at the end of the path of the corresponding material, and these defects are therefore spared the teeth of said retaining cleat.
  • the tooling used for such a molding is advantageously found to work in better conditions, the movable core that this tooling comprises for the formation of the teeth of the retaining cleat no longer being in abutment on the core opposite than at right of the articulation of this retaining cleat to the bar from which it extends, and not over the entire periphery of said retaining cleat.
  • the clamp according to the invention which, in the usual manner, can for example be produced by molding any suitable synthetic material, comprises in one piece, in a manner known per se, on the one hand a flexible strap 10, and, on the other hand, at one end thereof, a closing head 11.
  • the length of the flexible strap 10 is voluntarily reduced, a non-negligible part of this flexible strap 10 having been eliminated between two transverse cutting lines.
  • the flexible strap 10 On at least one of its faces, and, in practice, on only one of these in the embodiment shown, the flexible strap 10 has on the surface, with regular pitch, a series of transverse locking notches 13.
  • that of the faces of the flexible strap 10 which is thus provided with transverse locking notches 13 is the inner face, that is to say the face which, in the use position, once the flexible strap 10 closed in a loop on the closure head 11, is turned towards the inside of the loop thus formed.
  • these transverse locking notches 13 are established between two massive edge edges 15, slightly set back relative to these, FIG. 4.
  • the closing head 11 has a passage 16 suitable for engaging in a closed loop of the flexible strap 10.
  • the closure head 11 comprises, on the one hand, longitudinally in the direction of elongation of the flexible strap 10, two lateral flanges 17, substantially parallel to one another, according to a spacing substantially equal to the width of the flexible strap 10, and, on the other hand, transversely, at least two bars connecting to each other, at a distance from each other, said lateral flanges 17 .
  • first bar 19 which, disposed at the downstream end of said passage 16 in the direction of engagement of the flexible strap 10, forms the root thereof
  • a second bar 20 which, disposed at the upstream end of the passage 16 in said direction of engagement, extends at a distance from the bar 19 previous, parallel to this one.
  • the bar 22 is longitudinally offset from the bars 19 and 20, lying between them.
  • the bar 22 is closer to the bar 19 than to the bar 20, and is therefore, like the latter, disposed at the downstream end of the passage 16 in the direction of engagement of the flexible strap 10.
  • the closing head 11 is equipped, in association with the passage 16, with a hinged cleat or pin 23 capable of cooperating in retaining with the transverse locking notches 13 of the flexible strap 10 .
  • the inner face of the flexible strap 10 which is equipped with transverse locking notches 13, the retaining cleat 23 extends from one of the bars. of the closing head 11 which are an extension of this flexible strap 10, and, more precisely, that, 20, of these bars which is disposed at the upstream end of passage 16 in the direction of engagement of this flexible strap 10.
  • the notch 26 is significantly deeper than the groove 27, but its bottom is substantially at the same level as that of this groove.
  • the retaining cleat 23 For cooperation with the transverse locking notches 13 of the flexible strap 10, the retaining cleat 23 comprises transversely, on its face facing the passage 16, at least one tooth 28.
  • the bar 22 of the closure head 11 extends laterally, in the direction of the bar 20 from which extends the retaining cleat 23, but generally parallel to the direction of elongation of the flexible strap 10, by two lateral benches 30 intended to provide support for the flexible strap 10 in line with said retaining cleat 23 when it engages in passage 16.
  • These lateral benches form substantially returns for the flanges 17, and they are one with respect to the other at a spacing suitable for allowing the molding of the retainer cleat 23.
  • the lateral flanges 17 of the closure head 11 Due to the particular location, specified above, of the bar 22, and due to the benches 30 extending laterally thereof, the lateral flanges 17 of the closure head 11 have generally a trapezoidal outline, the large base is an extension of the internal face, provided with transverse locking notches 13, of the flexible strap 10.
  • these lateral flanges 17 are curved and striated, to facilitate gripping of the closing head 11.
  • the closing head 11 upstream of the retaining cleat 23 in the direction of engagement of the flexible strap 10 in the passage 16, the closing head 11 comprises, projecting from the same side as said retaining cleat 23, at least one boss 32, hereinafter said for convenience, spacer boss, capable of temporarily urging the flexible strap 10 in the direction opposite to the retaining cleat 23 during said engagement of the latter in passage 16.
  • two spacing bosses 32 are provided, which are each respectively projecting from the lateral flanges 17, on the inner face of these.
  • these spacing bosses 32 are in practice arranged in the corner zones formed between the lateral flanges 17 and the bar 20 from which the retaining cleat 23 extends.
  • each of them has an oblique face 33, which extends across the flange 17 concerned to said bar 20 e
  • the oblique face 33 of each spacing bosses 32 are connected laterally to the flange 17 concerned and to the bar 20 by a facet 34 oblique with respect to the direction of elongation of the flexible strap 10.
  • the spacer bosses 32 according to the invention are in practice arranged below the end of the benches 30 laterally extending the strip 22, both longitudinally, vis-à-vis the direction of engagement of the flexible strap 10 in passage 16, only transversely; their molding is thereby facilitated.
  • the spacing bosses 32 thus implemented according to the invention are retractable, by erosion or crushing for example.
  • the face of the side benches 30 facing the passage 16 extends slightly obliquely. in the direction of the upstream end of this passage 16, said face making an angle A with respect to the corresponding face of the bar 22 which these lateral benches 30 extend, and said lateral benches 30 thus having a thickness which, from the end downstream of passage 16 at the upstream end thereof, progressively decreasing, FIG. 6.
  • the spacer bosses 32 according to the invention are subject to erosion on the part of the latter. or a crushing, leading in practice to their elimination, or their virtual elimination, at the end of said engagement of this flexible strap 10 in passage 16.
  • the retaining cleat 23 can therefore, in a manner known per se, and as described in particular in the French patent application N ° 79 02333 mentioned above, assume safely and with certainty its holding and retaining function vis-à-vis the flexible strap 10.
  • the radius R of the transverse contour of the bottom of said groove 27 is preferably greater than that R I of the transverse contour of the bottom of said notch 26.
  • the retaining cleat 23 When retaining the flexible strap 10, the retaining cleat 23 thus preferably finds support on the bar 20 on the side of the notch 26 before also finding support on the side of the groove 27, which favors its application to said flexible strap 10.
  • said retaining cleat preferably comprises, according to the invention, and as r P - presented, projecting, recessed from its teeth 28, a cord 35 which extends it transversely at its free end.
  • this cord 35 also extends longitudinally over at least part of the lateral faces of the retaining cleat 23, in the median zone thereof.
  • a single spacing boss could be provided, for example in the central region of the bar from which the retaining cleat extends, this boss possibly, but not necessarily, extending from one of the flanges side to side of it.
  • the transverse notches for blocking the flexible strap are also advantageously spared when the latter is engaged in the passage of the closure head, said strap flexible then carrying by its massive edge edges on said spacing bosses.
  • the field of application of the invention is not only limited to the case where it is the inner face of the flexible strap which is provided with transverse locking notches, but extends on the contrary as well to the case where it's the outside of it.
  • the clamp concerned is a tangential head clamp, as more particularly described above, but also extends to the case where it is a question of a clamp with a perpendicular head, that is to say a clamp whose passage of the closure head extends substantially perpendicular to the flexible strap, so that, in line with this closure head, the flexible strap closes on itself by forming a right angle, as described for example in French patent application No. 81 17949 mentioned above.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Package Frames And Binding Bands (AREA)
  • Clamps And Clips (AREA)
  • Buckles (AREA)

Abstract

This bundling strap comprises an integral flexible strip (10), equipped on the surface with transverse locking notches, and a closure head (11), having a passage (16) suitable for the engagement, in a closed loop, of the flexible strip (10) and equipped with a retention catch (23) suitable for interacting with the transverse locking notches of the latter. According to the invention, upstream of the retention catch (23), in the direction of engagement of the flexible strip (10), the closure head (11) comprises, projecting, on the same side as the said retention catch (23), at least one spacing projection (32) suitable for temporarily stressing the flexible strip in the opposite direction from the said retention catch (23) during the said engagement of the strip. Application particularly to bundling straps produced by moulding of a synthetic material. <IMAGE>

Description

La présente invention concerne d'une manière générale les colliers de serrage du genre comportant, d'un seul tenant, d'une part une lanière souple, qui est munie en surface de crans transversaux de blocage, et d'autre part une tête de fermeture, qui présente un passage propre à l'engagement en boucle fermée de la lanière souple, et qui, en association avec ledit passage, est équipée d'un taquet ou doigt articulé de retenue propre à coopérer en retenue avec les crans transversaux de blocage de ladite lanière souple, ledit taquet de retenue comportant en pratique à cet effet au moins une dent et, de préférence, une pluralité de dents, lui permettant de venir en prise avec lesdits crans transversaux de blocage de la lanière souple.The present invention relates generally to clamps of the type comprising, in one piece, on the one hand a flexible strap, which is provided on the surface with transverse locking notches, and on the other hand a closure, which has a passage suitable for engaging in a closed loop of the flexible strap, and which, in association with said passage, is fitted with an articulated retaining cleat or finger capable of cooperating in retaining with the transverse locking notches of said flexible strap, said retaining cleat comprising in practice for this purpose at least one tooth and, preferably, a plurality of teeth, allowing it to come into engagement with said transverse notches for blocking the flexible strap.

Elle vise plus particulièrement mais non exclusivement, ceux de ces colliers de serrage, dits à tête tangentielle, dans lesquels, de son débouché d'entrée, en amont dans le sens d'engagement de la lanière souple, à son débouché de sortie, en aval dans ledit sens d'engagement, le passage de la tête de fermeture s'étend sensiblement parallèlement à la lanière souple, en sorte que, lorsqu'elle est engagée dans cette tête de fermeture, la lanière souple se referme parallèlement à elle-même au droit de celle-ci.It relates more particularly but not exclusively, those of these clamps, called tangential head, in which, from its inlet outlet, upstream in the direction of engagement of the flexible strap, to its outlet outlet, downstream in said direction of engagement, the passage of the closure head extends substantially parallel to the flexible strap, so that, when it is engaged in this closure head, the flexible strap closes parallel to itself to the right of it.

Un tel collier de serrage se trouve notamment décrit dans la demande de brevet français déposée le 30 Janvier 1979 sous le N° 79 02333 et publiée sous le N° 2.448.064.Such a clamp is found in particular in the French patent application filed on January 30, 1979 under No. 79 02333 and published under No. 2,448,064.

Il est usuellement réalisé en matière synthétique, par moulage de celle-ci.It is usually made of synthetic material, by molding thereof.

Un tel collier de serrage donne globalement satisfaction, notamment lorsqu'il est mis en oeuvre dans des conditions normales d'utilisation : une fois sa lanière souple fermée en boucle sur les objets à relier entre eux, le taquet ou doigt de retenue s'oppose normalement efficacement à tout mouvement rétrograde de cette lanière souple susceptible d'en relâcher le maintien.Such a clamping device is generally satisfactory, in particular when it is used under normal conditions of use: once its flexible strap is closed in a loop on the objects to be connected together, the cleat or retaining finger opposes normally effectively with any retrograde movement of this flexible strap likely to loosen the support.

Ils peuvent cependant se trouver parfois en défaut, notamment lorsque, bien que leur lanière souple soit alors de longueur relativement importante, ils sont mis en oeuvre autour d'objets formant globalement un ensemble de diamètre relativement réduit, l'opérateur n'ayant par exemple pas immédiatement à sa disposition de colliers de lanière souple de longueur plus appropriée à un tel diamètre.They can however sometimes be in default, in particular when, although their flexible strap is then of relatively great length, they are used around objects generally forming a relatively small diameter assembly, the operator not having, for example, immediately at his disposal flexible strap collars of a length more suitable for such a diameter.

On constate parfois en effet dans ce cas que, après fermeture de la lanière souple sur les objets concernés, le taquet de retenue n'assure pas avec toute la certitude souhaitable le maintien de cette lanière souple, et que, au contraire, celle-ci peut même intempestivement venir à se relâcher.It is sometimes found in fact in this case that, after closing the flexible strap on the objects concerned, the retaining cleat does not ensure with all the desirable certainty the maintenance of this flexible strap, and that, on the contrary, the latter may even inadvertently come to relax.

L'explication peut en être trouvée dans le fait que,lors de l'engagement de la lanière souple dans la tête de fermeture, les dents du taquet de retenue, qui, par leur élasticité propre, sont constamment sollicitées en direction de cette lanière souple, se trouvent soumises au défilement correspondant de celle-ci.The explanation can be found in the fact that, during the engagement of the flexible strap in the closing head, the teeth of the retaining cleat, which, by their own elasticity, are constantly biased towards this flexible strap , are subject to the corresponding scrolling thereof.

Cela est plus particulièrement le cas pour celle des dents du taquet de retenue qui se trouve la plus en amont dans le sens d'engagement, et donc de défilement, de la lanière souple.This is more particularly the case for that of the teeth of the retaining cleat which is furthest upstream in the direction of engagement, and therefore of travel, of the flexible strap.

Il en résulte inévitablement un échauffement de cette dent.This inevitably results in overheating of this tooth.

Lorsque la lanière souple est de longueur modérée, ou lorsque, de grande longueur, elle est refermée sur des objets dont l'ensemble présente globalement un diamètre approprié à une telle longueur, cet échauffement reste modéré, notamment parce que le mouvement relatif de la lanière souple qui lui donne naissance est alors nécessairement de courte durée.When the flexible strap is of moderate length, or when, of great length, it is closed on objects the assembly of which generally has a diameter suitable for such a length, this heating remains moderate, in particular because the relative movement of the strap flexible which gives birth to it is therefore necessarily short-lived.

Il n'en est pas de même lorsque, comme mentionné ci-dessus, la lanière souple présente une longueur relativement importante, et qu'elle est refermée sur des objets formant globalement un ensemble de diamètre relativement réduit par rapport à une telle longueur.It is not the same when, as mentioned above, the flexible strap has a relatively large length, and when it is closed on objects generally forming an assembly of relatively reduced diameter compared to such a length.

En effet, l'échauffement de la dent amont du taquet de retenue se trouve alors nettement plus accentué, tant en raison du fait que le mouvement relatif de la lanière souple qui lui donne naissance est alors de durée plus prolongée, qu'en raison du fait que, pour réduire la durée de ce mouvement, l'opérateur a naturellement tendance à l'accélérer.Indeed, the heating of the upstream tooth of the retaining cleat is then much more accentuated, both because of the fact that the relative movement of the flexible strap which gives rise to it is then of more prolonged duration, than because of the fact that, to reduce the duration of this movement, the operator naturally tends to accelerate it.

En pratique, l'échauffement de cette dent amont peut alors être suffisant pour en provoquer, au moins partiellement, la fusionIn practice, the heating of this upstream tooth can then be sufficient to cause, at least partially, the fusion

Outre que la dent amont ainsi au moins partiellement fondue se trouve par elle-méme empêchée ultérieurement d'opérer convenablement son office de retenue à l'égard des crans transversaux de blocage de la lanière souple, la matière en fusion qui en est issue, entraînée par la lanière souple, vient inévitablement colmater au moins partiellement les dents du taquet de retenue situées plus en aval dans le sens d'engagement de cette lanière souple, ce qui conduit également celles-ci à ne plus être en mesure de coopérer ultérieurement de manière convenable avec lesdits crans transversaux de blocage de la lanière souple.In addition that the upstream tooth thus at least partially melted is by itself prevented subsequently from operating properly its retaining office with respect to the transverse notches for blocking the flexible strap, the molten material which results therefrom, entrained by the flexible strap, inevitably clogs at least partially the teeth of the retaining cleat located further downstream in the direction of engagement of this flexible strap, which also leads them to no longer be able to cooperate later so suitable with said transverse notches for blocking the flexible strap.

La présente invention a notamment d'une manière générale pour objet une disposition permettant d'éviter cet inconvénient.The present invention particularly relates generally to a provision making it possible to avoid this drawback.

De manière plus précise, elle a pour objet un collier de serrage du genre comportant, d'un seul tenant, d'une part une lanière souple, qui est munie en surface de crans transversaux de blocage, et d'autre part une tête de fermeture, qui présente un passage propre à l'engagement en boucle fermée de la lanière souple, et qui, en association avec ledit passage, est équipée d'un taquet ou doigt articulé de retenue propre à coopérer en retenue avec les crans transversaux de blocage de ladite lanière souple, ce collier de serrage étant, suivant un premier aspect, caractérisé en ce que, en amont du taquet de retenue dans le sens d'engagement de la lanière souple, la tête de fermeture comporte, en saillie du même côté que ledit taquet de retenue, au moins un bossage, dit ci-après par commodité bossage d'écartement, propre à temporairement solliciter la lanière souple en direction opposée au dit taquet de retenue lors dudit engagement de celle-ci.More specifically, it relates to a clamp of the kind comprising, in one piece, on the one hand a flexible strap, which is provided on the surface with transverse locking notches, and on the other hand a head of closure, which has a passage suitable for engaging in a closed loop of the flexible strap, and which, in association with said passage, is fitted with an articulated retaining cleat or finger capable of cooperating in retaining with the transverse locking notches of said flexible strap, this clamping collar being, according to a first aspect, characterized in that, upstream of the retaining cleat in the direction of engagement of the flexible strap, the closure head comprises, projecting from the same side as said retaining cleat, at least one boss, said below for convenience, spacing boss, adapted to temporarily urge the flexible strap in the direction opposite to said retaining cleat during said engagement thereof.

En pratique, suivant une forme préférée de réalisation, la tête de fermeture comportant, de manière connue en soi, longitudinalement, dans le sens d'allongement de la lanière souple, deux flasques latéraux, et, transversalement, au moins deux barrettes reliant l'un à l'autre à distance l'une de l'autre, lesdits flasques latéraux, et le taquet de retenue s'étendant librement à compter d'une desdites barrettes, deux bossages d'écartement sont prévus, qui sont chacun respectivement en saillie sur lesdits flasques latéraux, et, ces bossages d'écartement étant disposés dans les zones d'angle formées entre les flasques latéraux et la barrette à compter de laquelle s'étend le taquet de retenue, chacun d'eux présente, parallèlement à la direction d'allongement de la lanière souple, un pan oblique, qui s'étend en biais du flasque concerné à ladite barrette.In practice, according to a preferred embodiment, the closure head comprising, in a manner known per se, longitudinally, in the direction of elongation of the flexible strap, two lateral flanges, and, transversely, at least two bars connecting the one to the other remotely one of the other, said side flanges, and the retaining cleat extending freely from one of said bars, two spacing bosses are provided, which are each respectively projecting from said side flanges, and, these bosses spacing being arranged in the corner areas formed between the lateral flanges and the bar from which extends the retaining cleat, each of them has, parallel to the direction of elongation of the flexible strap, an oblique face , which extends at an angle from the flange concerned to said bar.

Quoi qu'il en soit, du fait de la saillie qu'ils forment, le ou les bossages d'écartement suivant l'invention soumettent la lanière souple, lors de l'engagement de celle-ci, à un effort transversal tendant à écarter cette lanière souple du taquet de retenue, et permettant ainsi de ménager les dents de celui-ci, et plus particulièrement sa dent amont, en sorte que, au terme dudit engagement de la lanière souple, lesdites dents conservent avantageusement toute leur intégrité, même lorsque, en raison de sa longueur, cet engagement est relativement prolongé et/ou relativement rapide.Anyway, due to the projection they form, the spacer boss or bosses according to the invention subject the flexible strap, during the engagement of the latter, to a transverse force tending to spread this flexible strap of the retaining cleat, and thus making it possible to spare the teeth thereof, and more particularly its upstream tooth, so that, at the end of said engagement of the flexible strap, said teeth advantageously retain all their integrity, even when , due to its length, this engagement is relatively prolonged and / or relatively rapid.

En pratique, les bossages d'écartement suivant l'invention étant, par la nature même de la matière synthétique qui les constitue, escamotables, par exemple par érosion ou écrasement, et ayant de préférence globalement des dimensions suffisamment réduites pour être effectivement ainsi escamotables, ils se trouvent en totalité ou en quasi-totalité éliminés au terme de la fermeture sur elle-même de la lanière souple autour des objets concernés.In practice, the spacing bosses according to the invention being, by the very nature of the synthetic material which constitutes them, retractable, for example by erosion or crushing, and preferably having overall dimensions sufficiently reduced to be effectively thus retractable, they are wholly or almost entirely eliminated at the end of the closing on itself of the flexible strap around the objects concerned.

Le taquet de retenue, dûment épargné, peut alors assumer à plein sa fonction de retenue, sans risque de relâchement intempestif de la lanière souple qu'il a à charge de maintenir.The retaining cleat, duly spared, can then assume its full retaining function, without the risk of untimely loosening of the flexible strap which it is responsible for maintaining.

En bref, les bossages d'écartement suivant l'invention jouent en quelque sorte, à l'égard des dents du taquet de retenue, le rôle d'un "fusible" épargnant à ces dents l'échauffement dû au mouvement relatif de la lanière souple lors de son engagement et prenant directement à sa charge cet échauffement.In short, the spacing bosses according to the invention somehow play, with respect to the teeth of the retaining cleat, the role of a "fuse" sparing these teeth from overheating due to the relative movement of the strap flexible during its engagement and taking direct charge of this heating.

Certes, il est connu par la demande de brevet français déposée le 23 Septembre 1981 sous le N° 81 17949, de prévoir des bossages en biais dans la tête de fermeture d'un collier de serrage, pour action sur la lanière souple de celui-ci lors de son engagement dans ladite tête de fermeture.Admittedly, it is known by the French patent application filed on September 23, 1981 under No. 81 17949, to provide bosses at an angle in the closing head of a clamp, for action on the flexible strap thereof ci during its engagement in said closure head.

Mais à l'inverse de la disposition suivant l'invention, d'une part il y s'agit de bossages propres à solliciter la lanière souple en direction du taquet de retenue correspondant, et d'autre part ces bossages sont destinés à intervenir en permanence, et, par leurs dimensions, ils sont effectivement adaptés à cet effet.But unlike the arrangement according to the invention, on the one hand there are bosses capable of urging the flexible strap in the direction of the corresponding retaining cleat, and on the other hand these bosses are intended to intervene in permanence, and, by their dimensions, they are effectively adapted for this purpose.

Il ne s'agit donc pas comme dans la présente demande, de bossages d'écartement escamotables propres à temporairement solliciter la lanière souple en direction opposée au taquet de retenue.It is therefore not, as in the present application, retractable spacing bosses capable of temporarily urging the flexible strap in the direction opposite to the retaining cleat.

S'agissant, en pratique, d'un collier de serrage dont la lanière souple présente une longueur relativement importante, il est préférable, pour en assurer dans des conditions satisfaisantes le moulage, que le seuil d'injection du moule correspondant se trouve situé dans la zone médiane d'une telle lanière souple.Being, in practice, a clamp whose flexible strap has a relatively large length, it is preferable, to ensure molding in satisfactory conditions, that the injection threshold of the corresponding mold is located in the middle zone of such a flexible strap.

Il se trouve alors relativement éloigné de la tête de fermeture, et il n'est pas rare, dans ces conditions, que celle au moins des dents du taquet de retenue qui est la plus en aval dans le sens d'engagement de la lanière souple lors de la fermeture sur elle-même de celle-ci se trouve malformée, en raison même du fait qu'elle se situe en bout du trajet de la matière introduite dans le moule d'injection, et qu'elle peut dès lors se trouver formée avec de la matière plus ou moins grillée au cours d'un tel trajet et plus ou moins soumise aux gaz inévitablement refoulés lors de celui-ci.It is then relatively distant from the closure head, and it is not uncommon, under these conditions, for that at least of the teeth of the retaining cleat which is furthest downstream in the direction of engagement of the flexible strap. when it closes on itself, it is malformed, by the very fact of the fact that it is at the end of the path of the material introduced into the injection mold, and that it can therefore be found formed with more or less roasted material during such a journey and more or less subjected to the gases inevitably driven back during this one.

L'efficacité du taquet de retenue peut encore s'en trouver compromise.The effectiveness of the retainer cleat may still be compromised.

La présente invention a encore d'une manière générale pour objet une disposition permettant d'éviter cet inconvénient.The present invention also generally relates to a provision making it possible to avoid this drawback.

De manière plus précise elle a à cet égard pour objet un collier de serrage du genre mentionné ci-dessus qui, selon un deuxième aspect, est caractérisé en ce que, en retrait vis-à-vis de sa ou ses dents, le taquet de retenue comporte en saillie un cordon, qui le prolonge transversalement à son extrémité libre, et qui, de préférence, s'étend également longitudinalement sur une partie au moins de ses faces latérales, dans la zone médiane de celles-ci.More specifically it relates in this regard to a clamp of the kind mentioned above which, according to a second aspect, is characterized in that, set back vis-à-vis its tooth (s), the retaining cleat has a protruding cord, which extends transversely at its free end, and which preferably extends also longitudinally on at least part of its lateral faces, in the median zone thereof.

Ce cordon, qui n'a pas, au sein du collier de serrage concerné, de fonction mécanique particulière, prend avantageusement en charge les éventuels défauts de fabrication dus au fait que, comme mentionné ci-dessus, lors du moulage du collier de serrage, le taquet de retenuese trouve en bout du trajet de la matière correspondante, et ces défauts sont de ce fait épargnés aux dents dudit taquet de retenue.This cord, which has no particular mechanical function within the clamping collar concerned, advantageously takes care of any manufacturing defects due to the fact that, as mentioned above, during the molding of the clamping collar, the retaining cleat is located at the end of the path of the corresponding material, and these defects are therefore spared the teeth of said retaining cleat.

Corollairement, l'outillage mis en oeuvre pour un tel moulage se trouve avantageusement travailler dans de meilleures conditions, le noyau mobile que comporte cet outillage pour la formation des dents du taquet de retenue ne se trouvant plus en butée sur le noyau opposé qu'au droit de l'articulation de ce taquet de retenue à la barrette à compter de laquelle il s'étend, et non pas sur tout le pourtour dudit taquet de retenue.As a corollary, the tooling used for such a molding is advantageously found to work in better conditions, the movable core that this tooling comprises for the formation of the teeth of the retaining cleat no longer being in abutment on the core opposite than at right of the articulation of this retaining cleat to the bar from which it extends, and not over the entire periphery of said retaining cleat.

Les objets de l'invention, leurs caractéristiques et leurs avantages, ressortiront d'ailleurs de la description qui va suivre, à titre d'exemple, en référence aux dessins schématiques annexés sur lesquels :

  • la figure 1 est une vue en plan d'un collier de serrage suivant l'invention, suivant la flèche 1 de la figure 2 ;
  • la figure 2 en est une vue en coupe longitudinale, suivant la ligne II-II de la figure 1 ;
  • les figures 3 et 4 en sont des vues en coupe transversale, suivant respectivement les lignes III-III et IV-IV de la figure 2 ;
  • la figure 5 en est, à échelle différente, une vue partielle en perspective, du côté de la face inférieure de la tête de fermeture ;
  • la figure 6 reprend, à échelle supérieure, le détail de la figure 2 repéré par un encart VI sur celle-ci.
The objects of the invention, their characteristics and their advantages will also emerge from the description which follows, by way of example, with reference to the appended schematic drawings in which:
  • Figure 1 is a plan view of a clamp according to the invention, according to arrow 1 in Figure 2;
  • Figure 2 is a longitudinal sectional view along the line II-II of Figure 1;
  • Figures 3 and 4 are views in cross section, respectively on the lines III-III and IV-IV of Figure 2;
  • Figure 5 is a different perspective view, on a different scale, from the side of the underside of the closure head;
  • Figure 6 shows, on a larger scale, the detail of Figure 2 identified by an insert VI thereon.

Tel qu'illustré sur ces figures, le collier de serrage suivant l'invention, qui, de manière usuelle, peut par exemple être réalisé par moulage d'une quelconque matière synthétique appropriée, comporte d'un seul tenant, de manière connue en soi, d'une part une lanière souple 10, et, d'autre part, à l'une des extrémités de celle-ci, une tête de fermeture 11.As illustrated in these figures, the clamp according to the invention, which, in the usual manner, can for example be produced by molding any suitable synthetic material, comprises in one piece, in a manner known per se, on the one hand a flexible strap 10, and, on the other hand, at one end thereof, a closing head 11.

Sur les figures, la longueur de la lanière souple 10 est volontairement réduite, une partie non négligeable de cette lanière souple 10 ayant été éliminée entre deux traits de coupe transversaux.In the figures, the length of the flexible strap 10 is voluntarily reduced, a non-negligible part of this flexible strap 10 having been eliminated between two transverse cutting lines.

Il en est de même pour la languette de préhension 12, qui, à l'extrémité de la lanière souple 10 opposée à la tête de fermeture 11, prolonge usuellement cette lanière souple 10.It is the same for the gripping tongue 12, which, at the end of the flexible strap 10 opposite the closure head 11, usually extends this flexible strap 10.

Sur l'une au moins de ses faces, et, en pratique, sur une seule de celles-ci dans la forme de réalisation représentée, la lanière souple 10 présente en surface, à pas régulier, une série de crans transversaux de blocage 13.On at least one of its faces, and, in practice, on only one of these in the embodiment shown, the flexible strap 10 has on the surface, with regular pitch, a series of transverse locking notches 13.

Dans la forme de réalisation représentée, celle des faces de la lanière souple 10 qui est ainsi munie de crans transversaux de blocage 13 en est la face intérieure, c'est-à-dire la face qui, en position d'utilisation, une fois la lanière souple 10 fermée en boucle sur la tête de fermeture 11, est tournée vers l'intérieur de la boucle ainsi formée.In the embodiment shown, that of the faces of the flexible strap 10 which is thus provided with transverse locking notches 13 is the inner face, that is to say the face which, in the use position, once the flexible strap 10 closed in a loop on the closure head 11, is turned towards the inside of the loop thus formed.

En pratique, dans la forme de réalisation représentée, ces crans transversaux de blocage 13 sont établis entre deux bordures de rive massives 15, légèrement en retrait par rapport à celles-ci, figure 4.In practice, in the embodiment shown, these transverse locking notches 13 are established between two massive edge edges 15, slightly set back relative to these, FIG. 4.

Quoi qu'il en soit, il s'agit de crans à flancs dissymétriques, celui de leurs flancs qui est le plus proche de la tête de fermeture 11 étant le plus raide.Anyway, these are notches with asymmetrical flanks, that of their flanks which is closest to the closure head 11 being the stiffest.

Corollairement, et de manière globalement connue en soi, la tête de fermeture 11 présente un passage 16 propre à l'engagement en boucle fermée de la lanière souple 10.As a corollary, and in a manner generally known per se, the closing head 11 has a passage 16 suitable for engaging in a closed loop of the flexible strap 10.

En pratique, dans la forme de réalisation représentée, la tête de fermeture 11 comporte, d'une part, longitudinalement dans le sens d'allongement de la lanière souple 10, deux flasques latéraux 17, sensiblement parallèles l'un à l'autre, suivant un écartement sensiblement égal à la largeur de la lanière souple 10, et, d'autre part, transversalement, au moins deux barrettes reliant l'un à l'autre, à distance l'une de l'autre, lesdits flasques latéraux 17.In practice, in the embodiment shown, the closure head 11 comprises, on the one hand, longitudinally in the direction of elongation of the flexible strap 10, two lateral flanges 17, substantially parallel to one another, according to a spacing substantially equal to the width of the flexible strap 10, and, on the other hand, transversely, at least two bars connecting to each other, at a distance from each other, said lateral flanges 17 .

En pratique, dans la forme de réalisation représentée, trois barrettes sont prévues.In practice, in the embodiment shown, three bars are provided.

Il y a tout d'abord, d'un premier côté du passage 16, deux barrettes situées sensiblement dans le prolongement de la lanière souple 10, à savoir une première barrette 19, qui, disposée à l'extrémité aval dudit passage 16 dans le sens d'engagement de la lanière souple 10, forme la racine de celle-ci, et une deuxième barrette 20, qui, disposée à l'extrémité amont du passage 16 dans ledit sens d'engagement, s'étend à distance de la barrette 19 précédente, parallèlement à celle-ci.First of all, on a first side of the passage 16, there are two bars located substantially in the extension of the flexible strap 10, namely a first bar 19, which, disposed at the downstream end of said passage 16 in the direction of engagement of the flexible strap 10, forms the root thereof, and a second bar 20, which, disposed at the upstream end of the passage 16 in said direction of engagement, extends at a distance from the bar 19 previous, parallel to this one.

Il y a ensuite, de l'autre côté du passage 16, transversalement à l'écart par rapport à un prolongement de la lanière souple 10, une troisième barrette 22, parallèle aux barrettes 19 et 20 précédentes, ledit passage 16 étant globalement formé entre d'une part ces barrettes 19 et 20, et d'autre part cette barrette 22.Then, on the other side of the passage 16, transversely away from an extension of the flexible strap 10, a third bar 22, parallel to the preceding bars 19 and 20, said passage 16 being generally formed between on the one hand these bars 19 and 20, and on the other hand this bar 22.

Pour des raisons de moulage, la barrette 22 est longitudinalement décalée par rapport aux barrettes 19 et 20, en se situant entre celles-ci.For molding reasons, the bar 22 is longitudinally offset from the bars 19 and 20, lying between them.

En pratique, la barrette 22 est plus proche de la barrette 19 que de la barrette 20, et est donc, comme cette dernière, disposée à l'extrémité aval du passage 16 dans le sens d'engagement de la lanière souple 10.In practice, the bar 22 is closer to the bar 19 than to the bar 20, and is therefore, like the latter, disposed at the downstream end of the passage 16 in the direction of engagement of the flexible strap 10.

De manière également globalement connue en soi, la tête de fermeture 11 est équipée, en association avec le passage 16, d'un taquet ou doigt articulé de retenue 23 propre à coopérer en retenue avec les crans transversaux de blocage 13 de la lanière souple 10.In a manner also generally known per se, the closing head 11 is equipped, in association with the passage 16, with a hinged cleat or pin 23 capable of cooperating in retaining with the transverse locking notches 13 of the flexible strap 10 .

En pratique, s'agissant d'un collier de serrage dont c'est la face intérieure de la lanière souple 10 qui est équipée de crans transversaux de blocage 13, le taquet de retenue 23 s'étend à compter de l'une des barrettes de la tête de fermeture 11 qui sont dans le prolongement de cette lanière souple 10, et, plus précisément, de celle, 20, de ces barrettes qui est disposée à l'extrémité amont du passage 16 dans le sens d'engagement de cette lanière souple 10.In practice, in the case of a clamping collar, the inner face of the flexible strap 10 which is equipped with transverse locking notches 13, the retaining cleat 23 extends from one of the bars. of the closing head 11 which are an extension of this flexible strap 10, and, more precisely, that, 20, of these bars which is disposed at the upstream end of passage 16 in the direction of engagement of this flexible strap 10.

Le taquet de retenue 23, qui, à compter de la barrette 20, s'étend librement en direction de la barrette 19, se raccorde à ladite barrette 20 par une zone de moindre épaisseur 25, et, celle-ci, dans la forme de réalisation représentée, et de manière connue en soi, notamment par la demande de brevet français N° 79 02333 mentionnée ci-dessus, est délimitée entre d'une part une échancrure 26, qui, s'étendant globalement en oblique, débouche sur la face extérieure de la tête de fermeture 11, et d'autre part, une gorge 27, qui, décalée longitudinalement par rapport à l'échancrure 26, vers l'amont dans le sens d'engagement de la lanière souple 10 dans le passage 16, débouche du côté opposé à ladite échancrure 26, et donc vers l'intérieur de la tête de fermeture 11.The retaining cleat 23, which, starting from the bar 20, extends freely in the direction of the bar 19, is connected to said bar 20 by a zone of lesser thickness 25, and, the latter, in the form of embodiment shown, and in a manner known per se, in particular by French patent application No. 79 02333 mentioned above, is delimited between on the one hand a notch 26, which, extending generally obliquely, opens onto the face outside of the closing head 11, and on the other hand, a groove 27 which, offset longitudinally relative to the notch 26, upstream in the direction of engagement of the flexible strap 10 in the passage 16, opens on the opposite side to said notch 26, and therefore towards the inside of the closing head 11.

L'échancrure 26 est notablement plus profonde que la gorge 27, mais son fond est sensiblement à un même niveau que celui de cette gorge.The notch 26 is significantly deeper than the groove 27, but its bottom is substantially at the same level as that of this groove.

Pour coopération avec les crans transversaux de blocage 13 de la lanière souple 10, le taquet de retenue 23 comporte transversalement, sur sa face tournée vers le passage 16, au moins une dent 28.For cooperation with the transverse locking notches 13 of the flexible strap 10, the retaining cleat 23 comprises transversely, on its face facing the passage 16, at least one tooth 28.

Dans la forme de réalisation représentée, il comporte en pratique quatre dents 28, régulièrement échelonnées longitudinalement, au pas des crans transversaux de blocage 13 de la lanière souple 10.In the embodiment shown, it comprises in practice four teeth 28, regularly staggered longitudinally, in step with the transverse locking notches 13 of the flexible strap 10.

Enfin, de manière connue en soi, la barrette 22 de la tête de fermeture 11 se prolonge latéralement, en direction de la barrette 20 à compter de laquelle s'étend le taquet de retenue 23, mais globalement parallèlement à la direction d'allongement de la lanière souple 10, par deux banquettes latérales 30 destinées à fournir un appui à la lanière souple 10 au droit dudit taquet de retenue 23 lors de son engagement dans le passage 16.Finally, in a manner known per se, the bar 22 of the closure head 11 extends laterally, in the direction of the bar 20 from which extends the retaining cleat 23, but generally parallel to the direction of elongation of the flexible strap 10, by two lateral benches 30 intended to provide support for the flexible strap 10 in line with said retaining cleat 23 when it engages in passage 16.

Ces banquettes latérales forment sensiblement des retours pour les flasques 17, et elles sont l'une par rapport à l'autre à un écartement propre à permettre le moulage du taquet de retenue 23.These lateral benches form substantially returns for the flanges 17, and they are one with respect to the other at a spacing suitable for allowing the molding of the retainer cleat 23.

Du fait .de l'implantation, particulière, précisée ci-dessus, de la barrette 22, et du fait des banquettes 30 prolongeant latéralement celle-ci, les flasques latéraux 17 de la tête de fermeture 11 ont globalement un contour trapézoïdal, dont la grande base est dans le prolongement de la face intérieure, munie de crans transversaux de blocage 13, de la lanière souple 10.Due to the particular location, specified above, of the bar 22, and due to the benches 30 extending laterally thereof, the lateral flanges 17 of the closure head 11 have generally a trapezoidal outline, the large base is an extension of the internal face, provided with transverse locking notches 13, of the flexible strap 10.

Extérieurement, ces flasques latéraux 17 sont cintrés et striés, pour faciliter la préhension de la tête de fermeture 11.Externally, these lateral flanges 17 are curved and striated, to facilitate gripping of the closing head 11.

Suivant l'invention, en amont du taquet de retenue 23 dans le sens d'engagement de la lanière souple 10 dans le passage 16, la tête de fermeture 11 comporte, en saillie du même côté que ledit taquet de retenue 23, au moins un bossage 32, dit ci-après par commodité bossage d'écartement, propre à temporairement solliciter la lanière souple 10 en direction opposée au taquet de retenue 23 lors dudit engagement de celle-ci dans le passage 16.According to the invention, upstream of the retaining cleat 23 in the direction of engagement of the flexible strap 10 in the passage 16, the closing head 11 comprises, projecting from the same side as said retaining cleat 23, at least one boss 32, hereinafter said for convenience, spacer boss, capable of temporarily urging the flexible strap 10 in the direction opposite to the retaining cleat 23 during said engagement of the latter in passage 16.

En pratique, dans la forme de réalisation représentée, deux bossages d'écartement 32 sont prévus, qui sont chacun respectivement disposés en saillie sur les flasques latéraux 17, sur la face intérieure de ceux-ci.In practice, in the embodiment shown, two spacing bosses 32 are provided, which are each respectively projecting from the lateral flanges 17, on the inner face of these.

Dans la forme de réalisation représentée, ces bossages d'écartement 32 sont en pratique disposés dans les zones d'angle formées entre les flasques latéraux 17 et la barrette 20 à compter de laquelle s'étend le taquet de retenue 23.In the embodiment shown, these spacing bosses 32 are in practice arranged in the corner zones formed between the lateral flanges 17 and the bar 20 from which the retaining cleat 23 extends.

Parallèlement à la direction d'allongement de la lanière souple 10 chacun d'eux présente un pan oblique 33, qui s'étend en biais du flasque 17 concerné à ladite barrette 20e Parallel to the direction of elongation of the flexible strap 10 each of them has an oblique face 33, which extends across the flange 17 concerned to said bar 20 e

En outre, du côté amont, au moins, dans le sens d'engagement de la lanière souple 10 dans le passage 16, et, en pratique, tel que représenté, tant du côté amont que du côté aval, le pan oblique 33 de chacun des bossages d'écartement 32 se raccorde latéralement au flasque 17 concerné et à la barrette 20 par une facette 34 oblique vis-à-vis de la direction d'allongement de la lanière souple 10.In addition, on the upstream side, at least, in the direction of engagement of the flexible strap 10 in the passage 16, and, in practice, as shown, both on the upstream side and on the downstream side, the oblique face 33 of each spacing bosses 32 are connected laterally to the flange 17 concerned and to the bar 20 by a facet 34 oblique with respect to the direction of elongation of the flexible strap 10.

Mais, globalement, et ainsi qu'il apparaît mieux à la figure 2, les bossages d'écartement 32 suivant l'invention sont en pratique disposés en-deçà de l'extrémité des banquettes 30 prolongeant latéralement la barrette 22, tant longitudinalement, vis-à-vis du sens d'engagement de la lanière souple 10 dans le passage l6, que transversalement ; leur moulage s'en trouve facilité.But, overall, and as it appears better at the Figure 2, the spacer bosses 32 according to the invention are in practice arranged below the end of the benches 30 laterally extending the strip 22, both longitudinally, vis-à-vis the direction of engagement of the flexible strap 10 in passage 16, only transversely; their molding is thereby facilitated.

En pratique, les bossages d'écartement 32 ainsi mis en oeuvre suivant l'invention sont escamotables, par érosion ou écrasement par exemple.In practice, the spacing bosses 32 thus implemented according to the invention are retractable, by erosion or crushing for example.

Ils ont en effet globalement des dimensions suffisamment réduites pour être ainsi effectivement escamotables sous l'action de la lanière souple 10 lors de l'engagement de celle-ci dans le passage 16.They indeed have globally sufficiently small dimensions to be thus effectively retractable under the action of the flexible strap 10 when the latter is engaged in the passage 16.

De préférence, en association avec ces bossages d'écartement 32, la face des banquettes latérales 30 tournée vers le passage 16 s'étend légèrement en oblique. en direction de l'extrémité amont de ce passage 16, ladite face faisant un angle A par rapport à la face correspondante de la barrette 22 que prolongent ces banquettes latérales 30, et lesdites banquettes latérales 30 ayant ainsi une épaisseur qui, de l'extrémité aval du passage 16 à l'extrémité amont de celui-ci, va progressivement en décroissant, figure 6.Preferably, in association with these spacing bosses 32, the face of the side benches 30 facing the passage 16 extends slightly obliquely. in the direction of the upstream end of this passage 16, said face making an angle A with respect to the corresponding face of the bar 22 which these lateral benches 30 extend, and said lateral benches 30 thus having a thickness which, from the end downstream of passage 16 at the upstream end thereof, progressively decreasing, FIG. 6.

Lors de l'engagement en boucle fermée de la lanière 10 dans le passage 16 de la tête de fermeture 11, tel que schématisé en traits interrompus sur les figures 3 et 6, les bossages d'écartement 32 suivant l'invention, sur lesquels porte latéralement par ses bordures de rive 15 ladite lanière souple 10, ont tendance, du fait de leur pan oblique 33, et tel que schématisé par une flèche F sur ces figures 3 et 6, à soumettre la lanière souple 10 en cours d'engagement à un effort d'écartement la sollicitant temporairement en direction opposée au taquet de retenue 23, en sorte que celui-ci se trouve ainsi avantageusement ménagé.During the closed loop engagement of the strap 10 in the passage 16 of the closure head 11, as shown diagrammatically in broken lines in FIGS. 3 and 6, the spacing bosses 32 according to the invention, to which laterally by its edge edges 15 said flexible strap 10, tend, due to their oblique face 33, and as shown schematically by an arrow F in these Figures 3 and 6, to subject the flexible strap 10 during engagement to a spacing force temporarily urging it in the direction opposite to the retaining cleat 23, so that the latter is thus advantageously provided.

Mais, supportant ainsi à plein les effets de frottement développés par la lanière souple 10 lors de son engagement dans le passage 16, les bossages d'écartement 32 suivant l'invention sont l'objet de la part de celle-ci d'une érosion ou d'un écrasement, conduisant en pratique à leur élimination, ou leur quasi élimination, au terme dudit engagement de cette lanière souple 10 dans le passage 16.However, thus fully supporting the friction effects developed by the flexible strap 10 when it engages in the passage 16, the spacer bosses 32 according to the invention are subject to erosion on the part of the latter. or a crushing, leading in practice to their elimination, or their virtual elimination, at the end of said engagement of this flexible strap 10 in passage 16.

C'est dans ce sens qu'ils sont dits ci-dessus "escamotables".It is in this sense that they are said above "retractable".

Le taquet de retenue 23 peut dès lors, de manière connue en soi, et tel que décrit notamment dans la demande de brevet français N° 79 02333 mentionnée ci-dessus, assumer en toute sécurité et en toute certitude sa fonction de maintien et de retenue vis-à-vis de la lanière souple 10.The retaining cleat 23 can therefore, in a manner known per se, and as described in particular in the French patent application N ° 79 02333 mentioned above, assume safely and with certainty its holding and retaining function vis-à-vis the flexible strap 10.

De préférence, pour favoriser le fonctionnement à cet égard de ce taquet de retenue 23, le fond de l'échancrure 26 et celui de la gorge 27 délimitant la charnière de ce taquet de retenue 23 ayant l'un et l'autre transversalement un contour globalement hémi-circulaire, le rayon R du contour transversal du fond de ladite gorge 27 est de préférence supérieur à celui RI du contour transversal du fond de ladite échancrure 26.Preferably, to favor the functioning in this respect of this retaining cleat 23, the bottom of the notch 26 and that of the groove 27 delimiting the hinge of this retaining cleat 23 having both a transversely contour generally semi-circular, the radius R of the transverse contour of the bottom of said groove 27 is preferably greater than that R I of the transverse contour of the bottom of said notch 26.

Lors de la retenue de la lanière souple 10, le taquet de retenue 23 trouve ainsi préférentiellement un appui sur la barrette 20 du côté de l'échancrure 26 avant de trouver également un appui du côté de la gorge 27, ce qui favorise son application à ladite lanière souple 10.When retaining the flexible strap 10, the retaining cleat 23 thus preferably finds support on the bar 20 on the side of the notch 26 before also finding support on the side of the groove 27, which favors its application to said flexible strap 10.

En outre, suivant l'invention, pour favoriser notamment une bonne conformation des dents 28 de ce taquet de retenue 23 au moulage, et plus particulièrement de celle de ces dents qui est la plus en aval, et donc la plus proche de l'extrémité libre de ce taquet de retenue 23, ledit taquet de retenue comporte de préférence, suivant l'invention, et tel que rP- présenté, en saillie, en retrait vis-à-vis de ses dents 28, un cordon 35 qui le prolonge transversalement à son extrémité libre.In addition, according to the invention, to promote in particular a good conformation of the teeth 28 of this retaining cleat 23 during molding, and more particularly of that of these teeth which is the most downstream, and therefore the closest to the end. free from this retaining cleat 23, said retaining cleat preferably comprises, according to the invention, and as r P - presented, projecting, recessed from its teeth 28, a cord 35 which extends it transversely at its free end.

De préférence, et tel que représenté, ce cordon 35 s'étend également longitudinalement sur une partie au moins des faces latérales du taquet de retenue 23, dans la zone médiane de celles-ci.Preferably, and as shown, this cord 35 also extends longitudinally over at least part of the lateral faces of the retaining cleat 23, in the median zone thereof.

Quoi qu'il en soit, il prend avantageusement en charge les éventuelles défectuosités de moulage, dont sont dès lors épargnées les dents 28 du taquet de retenue 23.Anyway, it advantageously takes care of any molding defects, which are therefore spared the teeth 28 of the retaining cleat 23.

Bien entendu, la présente invention ne se limite pas à la forme de réalisation décrite et représentée, mais englobe toute variante d'exécution.Of course, the present invention is not limited to the embodiment described and shown, but encompasses any variant.

En particulier, un bossage d'écartement unique pourrait être prévu, par exemple dans la zone médiane de la barrette à compter de laquelle s'étend le taquet de retenue, ce bossage s'étendant éventuellement, mais non obligatoirement, d'un des flasques latéraux de celle-ci à l'autre.In particular, a single spacing boss could be provided, for example in the central region of the bar from which the retaining cleat extends, this boss possibly, but not necessarily, extending from one of the flanges side to side of it.

Mais, en prévoyant deux bossages d'écartement, et en les disposant latéralement, les crans transversaux de blocage de la lanière souple sont eux aussi avantageusement épargnés lors de l'engagement de celle-ci dans le passage de la tête de fermeture, ladite lanière souple portant alors par ses bordures de rives massives sur lesdits bossages d'écartement.However, by providing two spacing bosses, and by arranging them laterally, the transverse notches for blocking the flexible strap are also advantageously spared when the latter is engaged in the passage of the closure head, said strap flexible then carrying by its massive edge edges on said spacing bosses.

En outre, le domaine d'application de l'invention n'est pas seulement limité au cas où c'est la face intérieure de la lanière souple qui est munie de crans transversaux de blocage, mais s'étend au contraire aussi bien au cas où c'est la face extérieure de celle-ci.In addition, the field of application of the invention is not only limited to the case where it is the inner face of the flexible strap which is provided with transverse locking notches, but extends on the contrary as well to the case where it's the outside of it.

Enfin, il n'est pas non plus nécessairement limité au cas où le collier de serrage concerné est un collier de serrage à tête tangentielle, comme plus particulièrement décrit ci-dessus, mais s'étend aussi bien au cas où il s'agit d'un collier de serrage à tête perpendiculaire, c'est-à-dire un collier de serrage dont le passage de la tête de fermeture s'étend sensiblement perpendiculairement à la lanière souple, en sorte que, au droit de cette tête de fermeture, la lanière souple se ferme sur elle-même en formant un angle droit, tel que décrit par exemple dans la demande de brevet français N° 81 17949 mentionnée ci-dessus.Finally, it is also not necessarily limited to the case where the clamp concerned is a tangential head clamp, as more particularly described above, but also extends to the case where it is a question of a clamp with a perpendicular head, that is to say a clamp whose passage of the closure head extends substantially perpendicular to the flexible strap, so that, in line with this closure head, the flexible strap closes on itself by forming a right angle, as described for example in French patent application No. 81 17949 mentioned above.

Claims (10)

1. Collier de serrage du genre comportant, d'un seul tenant, d'une part une lanière souple (10), qui est munie en surface de crans transversaux de blocage (13), et d'autre part une tête de fermeture (11), qui présente un passage (16) propre à l'engagement en boucle fermée de la lanière souple (10), et qui, en association avec ledit passage (16), est équipée d'un taquet de retenue (23) propre à coopérer en retenue avec les crans transversaux de blocage (13) de ladite lanière souple (10), caractérisé en ce que, en amont du taquet de retenue (23) dans le sens d'engagement de la lanière souple (10), la tête de fermeture (11) comporte, en saillie du même côté que ledit taquet de retenue (23), au moins un bossage (32), dit ci-après bossage d'écartement, propre à temporairement solliciter la lanière souple (10) en direction opposée audit taquet de retenue (23) lors dudit engagement de celle-ci.1. Clamp of the type comprising, in one piece, on the one hand a flexible strap (10), which is provided on the surface with transverse locking notches (13), and on the other hand a closing head ( 11), which has a passage (16) suitable for the closed loop engagement of the flexible strap (10), and which, in association with said passage (16), is equipped with a clean retaining cleat (23) to cooperate in retention with the transverse locking notches (13) of said flexible strap (10), characterized in that, upstream of the retaining cleat (23) in the direction of engagement of the flexible strap (10), the closure head (11) comprises, projecting from the same side as said retaining cleat (23), at least one boss (32), hereinafter said spacing boss, suitable for temporarily stressing the flexible strap (10) direction opposite to said retaining cleat (23) during said engagement thereof. 2. Collier de serrage suivant la revendication 1, caractérisé en ce que le bossage d'écartement (32) est escamotable, par exemple par érosion ou écrasement.2. Clamp according to claim 1, characterized in that the spacer boss (32) is retractable, for example by erosion or crushing. 3. Collier de serrage suivant la revendication 2, caractérisé en ce que le bossage d'écartement (32) a globalement des dimensions suffisamment réduites pour être effectivement escamotable.3. Hose clamp according to claim 2, characterized in that the spacer boss (32) has overall dimensions that are sufficiently small to be effectively retractable. 4. Collier de serrage suivant l'une quelconque des revendications 1 à 3, dans lequel la tête de fermeture (11) compor. te longitudinalement, dans le sens d'allongement de la lanière souple (10), deux flasques latéraux (17), et, transversalement, au moins deux barrettes (19,20,22) reliant l'un à l'autre à distance l'une de l'autre, lesdits flasques latéraux (17), et dans lequel le taquet de retenue (23) s'étend librement à compter d'une desdites barrettes, caractérisé en ce que deux bossages d'écartement (32) sont prévus, qui sont chacun respectivement en saillie sur lesdits flasques latéraux (17).4. A clamp according to any one of claims 1 to 3, wherein the closure head (11) compor. longitudinally, in the direction of elongation of the flexible strap (10), two lateral flanges (17), and, transversely, at least two bars (19,20,22) connecting to each other at a distance l 'from one another, said side flanges (17), and in which the retaining cleat (23) extends freely from one of said bars, characterized in that two spacing bosses (32) are provided , which are each respectively projecting from said lateral flanges (17). 5. Collier de serrage suivant la revendication 4, caractérisé en ce que lesdits bossages d'écartement (32) sont disposés dans les zones d'angle formées entre les flasques latéraux (17) de la tête de fermeture (11) et la barrette (20) de celle-ci à compter de laquelle s'étend le taquet de retenue (23).5. A clamp according to claim 4, characterized in that said spacing bosses (32) are arranged in the corner areas formed between the lateral flanges (17) of the closure head (11) and the bar ( 20) of this from which extends the retaining cleat (23). 6. Collier de serrage suivant la revendication 5, caractérisé en ce que, parallèlement à la direction d'allongement de la lanière souple (10), chacun des bossages d'écartement (32) présente un pan oblique (33) qui s'étend en biais du flasque (17) concerné à la barrette (20) à compter de laquelle s'étend le taquet de retenue (23).6. Clamp according to claim 5, characterized in that, parallel to the direction of elongation of the flexible strap (10), each of the spacing bosses (32) has an oblique face (33) which extends across the flange (17) concerned to the bar (20) from which extends the retaining cleat (23). 7. Collier de serrage suivant la revendication 6, caractérisé en ce que, du côté amont, au moins, dans le sens d'engagement de la lanière souple (10), le pan oblique (33) de chacun des bossages d'écartement (32) se raccorde latéralement au flasque (17) et à la barrette (20) concernée par une facette (34) oblique vis-à-vis de la direction d'allongement de ladite lanière souple (10).7. Clamp according to claim 6, characterized in that, on the upstream side, at least, in the direction of engagement of the flexible strap (10), the oblique face (33) of each of the spacing bosses ( 32) is connected laterally to the flange (17) and to the bar (20) concerned by a facet (34) oblique with respect to the direction of elongation of said flexible strap (10). 8. Collier de serrage suivant l'une quelconque des revendications 4 à 6, dans lequel la barrette (20) de la tête de fermeture (11) à compter de laquelle s'étend le taquet de retenue (23) est sensiblement dans le prolongement de la lanière souple (10), à distance d'une barrette (19) formant la racine de celle-ci, et, transversalement à l'écart par rapport aux deux barrettes (19,20) précédentes, la tête de fermeture présente une troisième barrette (22), qui se prolonge latéralement par des banquettes (30) en direction de la première, globalement parallèlement à la direction d'allongement de la lanière souple, caractérisé en ce que, les bossages d'écartement (32) sont disposés en-deçà de l'extrémité desdites banquettes (30), tant longitudinalement, vis-à-vis du sens d'engagement de la lanière souple, que transversalement.8. A clamp according to any one of claims 4 to 6, wherein the bar (20) of the closure head (11) from which extends the retaining cleat (23) is substantially in the extension of the flexible strap (10), at a distance from a bar (19) forming the root thereof, and, transversely away from the two previous bars (19,20), the closure head has a third bar (22), which extends laterally by benches (30) in the direction of the first, generally parallel to the direction of elongation of the flexible strap, characterized in that the spacing bosses (32) are arranged below the end of said benches (30), both longitudinally, with respect to the direction of engagement of the flexible strap, and transversely. 9. Collier de serrage suivant l'une quelconque des revendications 1 à 8, dans lequel, pour coopération avec les crans transversaux de blocage (13) de la lanière souple (10), le taquet de retenue (23) comporte au moins une dent (28), caractérisé en ce que, en retrait vis-à-vis de sa ou ses dent(s) (28), le taquet de retenue (23) comporte en saillie un cordon (35) qui le prolonge transversalement à son extrémité libre, et qui, de préférence, s'étend également longitudinalement sur une partie au moins de ses faces latérales, dans la zone médiane de celles-ci.9. A clamp according to any one of claims 1 to 8, wherein, for cooperation with the transverse locking notches (13) of the flexible strap (10), the retaining cleat (23) comprises at least one tooth (28), characterized in that, set back with respect to its tooth (s) (28), the retaining cleat (23) has a protruding cord (35) which extends it transversely at its end free, and which preferably also extends longitudinally over at least part of its lateral faces, in the middle area of these. 10. Collier de serrage suivant l'une quelconque des revendications 1 à 9, dans lequel le taquet de retenue (23) se raccorde à la barrette (20) de la tête de fermeture (11) par une zone de moindre épaisseur formant charnière (25) délimitée, d'une part entre une échancrure (26) qui débouche sur la face extérieure de ladite tête de fermeture (11) et d'autre part une gorge (27) qui, décalée longitudinalement par rapport à ladite échancrure (26), vers l'amont dans le sens d'engagement de la lanière souple, débouche du côté opposé à la dite échancrure, et dans lequel le fond de ladite échancrure (26) et celui de ladite gorge (27) ont l'un et l'autre transversalement un contour globalement hémi-circulaire, caractérisé en ce que le rayon (R) du contour transversal du fond de la gorge (27) est supérieur à celui (R') du contour transversal du fond de l'échancrure (26). 1 0. A hose clamp according to any one of claims 1 to 9, in which the retaining cleat (23) is connected to the bar (20) of the closure head (11) by a zone of reduced thickness forming a hinge (25) delimited, on the one hand between a notch (26) which opens onto the outer face of said closure head (11) and on the other hand a groove (27) which, offset longitudinally with respect to said notch (26 ), upstream in the direction of engagement of the flexible strap, opens on the side opposite to said notch, and in which the bottom of said notch (26) and that of said groove (27) have one and the other transversely a generally semi-circular contour, characterized in that the radius (R) of the transverse contour of the bottom of the groove (27) is greater than that (R ') of the transverse contour of the bottom of the notch (26 ).
EP83400600A 1982-03-30 1983-03-23 Bundling strap Withdrawn EP0090726A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8205402 1982-03-30
FR8205402A FR2524582A1 (en) 1982-03-30 1982-03-30 TIGHTENING NECK

Publications (1)

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EP0090726A1 true EP0090726A1 (en) 1983-10-05

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EP83400600A Withdrawn EP0090726A1 (en) 1982-03-30 1983-03-23 Bundling strap

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EP (1) EP0090726A1 (en)
ES (1) ES271277U (en)
FR (1) FR2524582A1 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4958414A (en) * 1989-12-05 1990-09-25 Benoit Edward J Reusable tie-all or bundle fastener
GB2308153A (en) * 1995-12-13 1997-06-18 Bowthorpe Plc Flexible tie for cables
US5745957A (en) * 1997-03-26 1998-05-05 Thomas & Betts Corporation In-line cable tie
US6003208A (en) * 1995-12-13 1999-12-21 Tyton Hellerman Corporation Parallel entry tie
USD419861S (en) 1997-03-21 2000-02-01 Thomas & Betts Corporation Single pawl parallel-entry cable tie
USD422487S (en) 1997-03-21 2000-04-11 Thomas & Betts Corporation Double pawl parallel-entry cable tie
US6578239B2 (en) * 2001-01-03 2003-06-17 David A. Hatch Low profile latchable tie
NL1033810C2 (en) * 2007-05-04 2008-11-06 Willem Hienekamp Tensionable clamping device, suitable for use in bundle strips.

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES1056663Y (en) 2004-02-05 2004-08-01 Unex Aparellaje Electrico Sl CLAMP.

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Publication number Priority date Publication date Assignee Title
FR2278976A1 (en) * 1974-07-17 1976-02-13 Mecanoser Sa Single-piece wrap-round clip of plastics - has saw-tooth strap lockable by pivotal flap
FR2448064A1 (en) * 1979-01-30 1980-08-29 Legrand Sa TIGHTENING COLLAR

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2278976A1 (en) * 1974-07-17 1976-02-13 Mecanoser Sa Single-piece wrap-round clip of plastics - has saw-tooth strap lockable by pivotal flap
FR2448064A1 (en) * 1979-01-30 1980-08-29 Legrand Sa TIGHTENING COLLAR

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4958414A (en) * 1989-12-05 1990-09-25 Benoit Edward J Reusable tie-all or bundle fastener
GB2308153A (en) * 1995-12-13 1997-06-18 Bowthorpe Plc Flexible tie for cables
GB2308153B (en) * 1995-12-13 2000-08-16 Bowthorpe Plc Parallel entry tie
US5890265A (en) * 1995-12-13 1999-04-06 Tyton Hellermann Corporation Parallel entry tie
US6003208A (en) * 1995-12-13 1999-12-21 Tyton Hellerman Corporation Parallel entry tie
USD419861S (en) 1997-03-21 2000-02-01 Thomas & Betts Corporation Single pawl parallel-entry cable tie
USD422487S (en) 1997-03-21 2000-04-11 Thomas & Betts Corporation Double pawl parallel-entry cable tie
WO1998043375A2 (en) 1997-03-26 1998-10-01 Thomas & Betts International, Inc. Cable tie
WO1998043375A3 (en) * 1997-03-26 1999-02-18 Thomas & Betts Int Cable tie
US6076234A (en) * 1997-03-26 2000-06-20 Thomas & Betts Corporation In-line cable tie
US5745957A (en) * 1997-03-26 1998-05-05 Thomas & Betts Corporation In-line cable tie
US6578239B2 (en) * 2001-01-03 2003-06-17 David A. Hatch Low profile latchable tie
US6763553B2 (en) * 2001-01-03 2004-07-20 David A. Hatch Low profile latchable tie
NL1033810C2 (en) * 2007-05-04 2008-11-06 Willem Hienekamp Tensionable clamping device, suitable for use in bundle strips.

Also Published As

Publication number Publication date
ES271277U (en) 1983-08-16
FR2524582A1 (en) 1983-10-07

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