WO1997010445A1 - Device for assembling a square internal cross section hollow tube with a base element - Google Patents

Device for assembling a square internal cross section hollow tube with a base element Download PDF

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Publication number
WO1997010445A1
WO1997010445A1 PCT/FR1996/001360 FR9601360W WO9710445A1 WO 1997010445 A1 WO1997010445 A1 WO 1997010445A1 FR 9601360 W FR9601360 W FR 9601360W WO 9710445 A1 WO9710445 A1 WO 9710445A1
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WO
WIPO (PCT)
Prior art keywords
cam
lug
section
tube
longitudinal axis
Prior art date
Application number
PCT/FR1996/001360
Other languages
French (fr)
Inventor
Jean-Pierre Hassid
Original Assignee
Hassid Jean Pierre
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 Hassid Jean Pierre filed Critical Hassid Jean Pierre
Publication of WO1997010445A1 publication Critical patent/WO1997010445A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B7/00—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections
    • F16B7/10—Telescoping systems
    • F16B7/14—Telescoping systems locking in intermediate non-discrete positions
    • F16B7/1427—Telescoping systems locking in intermediate non-discrete positions with cammed or eccentrical surfaces co-operating by relative rotation of the telescoping members or by rotation of an external collar
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B21/00—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings
    • F16B21/02—Releasable fastening devices locking by rotation

Definitions

  • the present invention relates to devices for assembling a hollow tube of inner section of substantially square shape with a basic element such as a plate, another tube, a mounting nut or even another identical assembly device or similar.
  • a device making it possible to assemble a hollow tube of inner section of substantially square shape with a basic element, essentially comprising a cam of oblong substantially cylindrical shape defined along a given axis, the outer section of which passes progressively, at least once, from a minimum value less than the side of the square inner section of the tube to a maximum value between the side and the diagonal of this square inner section, so that the tube can be threaded onto the cam without friction and jammed on the outer surface of the cam after a rotation around its axis by a determined angular value.
  • one end of the cam is integral with a base element like one of those mentioned above, a relatively permanent connection is thus produced between the tube and this base element.
  • the assembly device described above undoubtedly has advantages such as its ease of use, the speed of assembly and the possibility of carrying out numerous repetitive assembly and disassembly.
  • the present invention thus aims to provide a device for assembling a hollow tube of inner section substantially square in shape with a basic element, comprising a cam, which largely overcomes the drawbacks mentioned above presented by the devices which has a structure making it possible to produce the cam in materials which wear out less quickly than those used for the production of cams of the prior art.
  • the subject of the present invention is a device making it possible to assemble a hollow tube of inner section of substantially square shape with a basic element, essentially comprising a cam of oblong substantially cylindrical shape defined along a given longitudinal axis, the cross section of which outer progressively passes, at least once, from a minimum value less than the side of the square inner section of the tube to a maximum value between the side and the diagonal of this square inner section, so that the tube can be threaded on the cam without friction and wedged on the external surface of the cam after a rotation around its axis by a determined angular value, and means for connecting a first end of said cam to said basic element, characterized in that it further comprises a lug, means for mounting said lug in rotation relative to said cam around said axis longitudinal of said cam, said lug being shaped to be housed in a corner of the square inner section of the hollow tube when the latter is plugged into said cam, and means for limiting the amplitude to an angle value " ⁇ " of the rotation of said basic element
  • Figures 1 and 2 show the block diagram of an embodiment of a device according to the invention for assembling a hollow tube of inner section of substantially square shape with a base member, Figure 1 showing a section longitudinal of the device referenced II in FIG. 2 and FIG. 2 showing a cross section at the end referenced II— 11 in FIG. 1, and
  • Figures 3 and 4 show a preferred embodiment of a device according to the invention in accordance with Figures 1 and 2, Figure 3 showing a longitudinal section of the device referenced III-III in Figure 4 and Figure 4 representing an end view of the device according to FIG. 3.
  • the figures represent two different embodiments of the device according to the invention making it possible to assemble a hollow tube of inner section of substantially square shape with a basic element.
  • the same references designate the same elements there regardless of the figure in which they appear.
  • the device according to the invention makes it possible to assemble a hollow tube 1 of internal section of substantially square shape with a base element 2.
  • This device essentially comprises a cam 10 of oblong substantially cylindrical shape defined along a given longitudinal axis 1 1, the outer section of which progressively passes, at least once, from a minimum value less than the side of the square inner section of the tube 1 to a maximum value between the side and the diagonal of this square interior section, so that the tube can be threaded onto the cam without friction and wedged on the exterior surface of the cam 10 after a rotation of a determined angular value around axis 1 1 of the cam.
  • the external section of the cam 10 has symmetry with respect to at least two perpendicular axes, for example the two axes 12 and 13 in Figure 2, and has four bulges 14, 15, ... substantially centered on these axes of symmetry.
  • the cam 10 has four depressions 16, 17, ... lying respectively between two bulges 14, 15, ... consecutive.
  • Means 20 are further provided for connecting a first end 21 of the cam 10 to the base element 2. These means can be of any type well known in themselves and will therefore not be described more fully here.
  • the device further comprises a lug 30 and means for mounting it in rotation relative to the cam 10, around its longitudinal axis 1 1.
  • the lug 30 is shaped to be housed in a corner 31 of the square inner section of the hollow tube 1 when the latter is plugged into the cam 10.
  • Means 32 are further provided for limiting to an angle value " ⁇ " l ' amplitude of the rotation of this lug 30 relative to the cam 10.
  • the lug preferably has a shape inscribed in a first angle 33 of value " ⁇ " and the apex of which is located on the longitudinal axis 11 of the cam 10 and the value " ⁇ " of the amplitude of rotation of this lug relative to the cam is substantially equal to -.
  • the part of the lug 30 which is able to be housed in a corner 31 of the square internal section of the hollow tube 1 when it is plugged into the cam is inscribed in a right dihedral so that, by this part, it can perfectly match the two perpendicular walls which form the inner corner 31 of the tube 1 in which it is able to be housed.
  • the means 32 for mounting the lug 30 in rotation relative to the cam 10 about its longitudinal axis 1 1 comprise a rotation bearing 34 integral with the second end 35 of the cam and centered on the 'longitudinal axis 1 1, a ring 36 rotatably mounted in the bearing 34 and a groove 37 formed in the bearing 34.
  • the groove 37 is delimited by two end walls 38, 39 respectively defined in two planes intersecting the longitudinal axis 1 1 of the cam and forming a second angle with a value " ⁇ " whose value is equal to ⁇ + ⁇ .
  • the value " ⁇ " of the second angle is equal to - + ⁇ .
  • the lug 30 is integral with the ring 36 and is positioned thereon so that it is at least partially located in the groove 37 and that it can abut against the two end walls 38 and 39 of the groove when it pivots relative to the cam as explained below in the description of the operation of the device.
  • the device which has been described above in its general functions is more particularly illustrated in FIGS. 1 and 2, but it can have a structure like that which is illustrated in FIGS. 3 and 4.
  • the cam 10 comprises at least one central shaft 40 having a cylindrical external shape not of revolution and a hollow cylindrical sleeve 41, the internal wall 42 of the sleeve having a section complementary to the section exterior of the central shaft not of revolution 40 so that this shaft can slide in the hollow interior of the sleeve, but without being able to pivot around its axis which is in fact the longitudinal axis 1 1 defined above.
  • the external surface 43 of the sleeve then constitutes the external surface of the cam as it has been defined above and the first end 21 of the cam is constituted by a first end 44 of the central shaft 40.
  • the device also comprises a groove 50 produced on the external surface of the cam, more particularly in the bulges 14, 15, ..., the groove being mainly contained in a plane which is substantially perpendicular to the axis longitudinal 11 and being able to receive, as explained below, a protruding pin 60 and integral with the inner wall of the tube 1.
  • the device advantageously comprises means for blocking the sleeve 41 on the central shaft 40.
  • These locking means more particularly illustrated in FIG. 3 comprise a shoulder 51 produced at the first end 44 of the central shaft 40 and a nut 52 able to be screwed onto the second end 53 of the emerging central shaft of the sleeve 41.
  • the nut 52 is of the "captive” type, so as to always remain attached to the sleeve 41 even if the central shaft 40 is no longer mounted in association with the sleeve 41.
  • a nut of the "captive” type is well known in itself.
  • FIG. 3 represents a possible embodiment thereof and, the drawing being sufficiently explicit, its structure will not be described more fully here.
  • the structure of the device described above with reference to Figures 1 to 4 allows without any difficulty to achieve at least the cam 10 and the lug 30 in metallic materials such as those in which the hollow tubes to be assembled are made, as optionally as the sleeve 41, the central shaft 40, the nut 52 and the ring 37.
  • the cam 10 (or the sleeve 41) and the bearing 34 are produced in one piece as shown more particularly in FIGS. 1 and 3.
  • Figures 1 to 4 show two possible embodiments of the device according to the invention for assembling a hollow tube of inner section of substantially square shape with a basic element but, whatever the embodiment of this device, its operation is identical.
  • the lug 30 is positioned so that it is substantially in the middle of the groove 37, as illustrated in broken lines in FIG. 2.
  • the tube 1 is plugged onto the cam 10 so that the lug 30 follows a corner 31 of the square inner section of the tube, over a desired length, for example until it abuts against the base element 2.
  • This position of the tube is shown in broken lines in FIG. 2.
  • the tube 1 is then pivoted relative to the cam
  • the tube 1 has undergone a rotation in the senestrorsum direction. It is however obvious that one could have made it undergo a rotation of the same amplitude, but in the dextrorsum direction, which would have allowed the tube 1 to take the same relative position as that illustrated in FIG. 2 in solid lines, but with the lug 30 in abutment against the other end wall 39 of the groove 37.
  • the tube is inserted in the same way as described above with the spike 60 located in one of the spaces delimited between the inner wall of the tube and the depressions 16, 17, ... between two bulges 14, 15, ... consecutive.
  • the pin 60 is housed in the part of the groove 50 located on the bulge which comes into contact with the side of the inner wall of the tube which carries this pin.
  • This latter embodiment allows the tube 1 not to be detached from the base element 2 in the event that too violent a traction is exerted on the tube relative to the base element in a direction comprising at least one component along the longitudinal axis 1 1.
  • the lug 30 is integral with a ring 36 which is rotatably mounted on a rotation bearing 34 produced on the cam 10.
  • the means for mounting the lug in rotation relative to the cam 10 about its longitudinal axis 1 1 are constituted by means for securing this lug with a wedge 31 of the square inner section of the hollow tube 1.
  • These securing means can be of any type, for example glue, screws and / or fixing rivets, welding, etc.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)

Abstract

The present invention relates to devices for assembling a hollow tube (1) having a square internal cross section with a base element (2). The device of the invention is substantially characterized in that it comprises a cylindrical cam (10) having an axis (11), of which the external cross section passes progressively from a low minimum value smaller than the side of the square internal cross section of tube (1) to a maximum value comprised between the side and the diagonal of said internal square cross section, so that the tube may be engaged on the cam (10) without friction and wedged on to the external surface of the cam after rotation about its axis by a predetermined angular value, a pin (30) rotationally mounted with respect to the cam (10) about the axis (11) and lodged into a corner of the tube (1) when it is nested on the cam (10), and means for limiting to an angle value 'α' the rotational amplitude of the pin (30) with respect to the cam (10). Application particularly to the construction of dwellings of any kind or the like.

Description

DISPOSITIF PERMETTANT D'ASSEMBLER UN TUBE CREUX DE SECTION INTERIEURE CARREE AVEC UN ELEMENT DE BASE DEVICE FOR ASSEMBLING A HOLLOW TUBE OF SQUARE INTERIOR SECTION WITH A BASE ELEMENT
La présente invention concerne les dispositifs permettant d'assembler un tube creux de section intérieure de forme sensiblement carrée avec un élément de base tel qu'une plaque, un autre tube, une noix d'assemblage ou même un autre dispositif d'assemblage identique ou similaire.The present invention relates to devices for assembling a hollow tube of inner section of substantially square shape with a basic element such as a plate, another tube, a mounting nut or even another identical assembly device or similar.
Un grand nombre d'activités utilisent, pour la construction de différents habitacles ou analogues pour toute application, aussi bien immobilière que mobilière, des tubes profilés qu'il faut assembler pour obtenir la construction voulue, sachant que, par habitacle, on entend toutes constructions aptes à recevoir des objets et/ou des personnes et/ou des animaux. A titre d'exemple, il est possible de citer des abris dans des salles d'exposition, des étagères, etc. Il existe déjà de nombreuses réalisations permettant de tels assemblages. Notamment, il existe un dispositif permettant d'assembler un tube creux de section intérieure de forme sensiblement carrée avec un élément de base, comportant essentiellement une came de forme oblongue sensiblement cylindrique définie suivant un axe donné, dont la section extérieure passe progressivement, au moins une fois, d'une valeur minimale inférieure au côté de la section intérieure carrée du tube à une valeur maximale comprise entre le côté et la diagonale de cette section intérieure carrée, de façon que le tube puisse être enfilé sur la came sans frottement et coincé sur la surface extérieure de la came après une rotation autour de son axe d'une valeur angulaire déterminée. Pour effectuer l'assemblage, il suffit d'enfiler le tube sur la came sur une longueur déterminée, ce qui s'effectue sans difficulté puisque sans frottement, puis de faire pivoter le tube autour de la came pour le coincer sur le renflement de la came, c'est-à-dire essentiellement sur la partie de sa section qui a la valeur comprise entre le côté et la diagonale de la section intérieure carrée du tube. En appliquant un couple de forces suffisant entre la came et le tube, on produit une légère déformation de la paroi du tube due a l'élasticité naturelle des matériaux, cette élasticité permettant elle-même de maintenir solidaires le tube et la came.A large number of activities use, for the construction of different interiors or the like for any application, both real estate and movable, profiled tubes which must be assembled to obtain the desired construction, knowing that by interior means any construction suitable for receiving objects and / or people and / or animals. As an example, it is possible to cite shelters in exhibition rooms, shelves, etc. There are already many embodiments allowing such assemblies. In particular, there is a device making it possible to assemble a hollow tube of inner section of substantially square shape with a basic element, essentially comprising a cam of oblong substantially cylindrical shape defined along a given axis, the outer section of which passes progressively, at least once, from a minimum value less than the side of the square inner section of the tube to a maximum value between the side and the diagonal of this square inner section, so that the tube can be threaded onto the cam without friction and jammed on the outer surface of the cam after a rotation around its axis by a determined angular value. To carry out the assembly, it is enough to thread the tube on the cam over a determined length, which is carried out without difficulty since without friction, then to pivot the tube around the cam to wedge it on the bulge of the cam, that is to say essentially on the part of its section which has the value between the side and the diagonal of the square inner section of the tube. By applying a sufficient torque between the cam and the tube, a slight deformation of the tube wall is produced due to the natural elasticity of the materials, this elasticity itself making it possible to keep the tube and the cam integral.
Si, par exemple une extrémité de la came est solidaire d'un élément de base comme l'un de ceux mentionnés ci-dessus, il est ainsi réalisé un assemblage relativement pérenne entre le tube et cet élément de base.If, for example, one end of the cam is integral with a base element like one of those mentioned above, a relatively permanent connection is thus produced between the tube and this base element.
Le dispositif d'assemblage décrit ci-dessus présente incontestablement des avantages tels que sa facilité d'utilisation, la rapidité de l'assemblage et la possibilité d'effectuer de nombreux montages et démontages répétitifs.The assembly device described above undoubtedly has advantages such as its ease of use, the speed of assembly and the possibility of carrying out numerous repetitive assembly and disassembly.
Il peut cependant présenter un inconvénient qui se produit essentiellement lorsque l'usure de la surface extérieure du renflement de la came n'est plus négligeahle ou lorsque l'on applique entre le tube et la came un couple de forces trop important. En effet, en effectuant la rotation du tube par rapport à la came, on ne peut plus alors coincer le tube sur la came, ou bien la déformation imposée au tube est allée au-delà de la déformation élastique et ne peut plus jouer son rôle de rétention. Pour pallier cet inconvénient, on a mis au point différentes solutions, parmi lesquelles celle qui consiste à réaliser, sur la surface extérieure de la came en bordure de la partie ayant la section comprise entre le côté et la diagonale de la section intérieure carrée du tube, un méplat qui empêche théoriquement la rotation supplémentaire du tube par rapport à la came. Cette réalisation donne de bons résultats tant que la came ne présente pas un degré d'usure trop important.However, it can have a drawback which occurs essentially when the wear on the external surface of the bulge of the cam is no longer negligible or when too much force is applied between the tube and the cam. In effect, by rotating the tube relative to the cam, it is no longer possible to wedge the tube on the cam, or else the deformation imposed on the tube has gone beyond the elastic deformation and can no longer play its role. retention. To overcome this drawback, various solutions have been developed, including that which consists in producing, on the external surface of the cam at the edge of the part having the section between the side and the diagonal of the square internal section of the tube. , a flat which theoretically prevents additional rotation of the tube relative to the cam. This achievement gives good results as long as the cam does not show too much wear.
La présente invention a ainsi pour but de réaliser un disposirif permettant d'assembler un tube creux de section intérieure sensiblement de forme carrée avec un élément de base, comportant une came, qui pallie en grande partie les inconvénients mentionnés ci-dessus présentés par les dispositifs antérieurs, et qui présente une structure permettant de réaliser la came dans des matériaux s'usant moins rapidement que ceux utilisés pour la réalisation des cames de l'art antérieur.The present invention thus aims to provide a device for assembling a hollow tube of inner section substantially square in shape with a basic element, comprising a cam, which largely overcomes the drawbacks mentioned above presented by the devices which has a structure making it possible to produce the cam in materials which wear out less quickly than those used for the production of cams of the prior art.
Plus précisément, la présente invention a pour objet un dispositif permettant d'assembler un tube creux de section intérieure de forme sensiblement carrée avec un élément de base, comportant essentiellement une came de forme oblongue sensiblement cylindrique définie suivant un axe longitudinal donné, dont la section extérieure passe progressivement, au moins une fois, d'une valeur minimale inférieure au côté de la section intérieure carrée du tube à une valeur maximale comprise entre le côté et la diagonale de cette section intérieure carrée, de façon que le tube puisse être enfilé sur la came sans frottement et coincé sur la surface extérieure de la came après une rotation autour de son axe d'une valeur angulaire déterminée, et des moyens pour lier une première extrémité de ladite came audit élément de base, caractérisé par le fait qu'il comporte en outre un ergot, des moyens pour monter ledit ergot en rotation par rapport à ladite came autour dudit axe longitudinal de ladite came, ledit ergot étant conformé pour venir se loger dans un coin de la section intérieure carrée du tube creux lorsque ce dernier est enfiché sur ladite came, et des moyens pour limiter à une valeur d'angle "α" l'amplitude de la rotation dudit ergot par rapport à ladite came. D'autres caractéristiques et avantages de la présente invention apparaîtront au cours de la description suivante donnée en regard des dessins annexés à titre illustratif, mais nullement limitatif, dans lesquels:More specifically, the subject of the present invention is a device making it possible to assemble a hollow tube of inner section of substantially square shape with a basic element, essentially comprising a cam of oblong substantially cylindrical shape defined along a given longitudinal axis, the cross section of which outer progressively passes, at least once, from a minimum value less than the side of the square inner section of the tube to a maximum value between the side and the diagonal of this square inner section, so that the tube can be threaded on the cam without friction and wedged on the external surface of the cam after a rotation around its axis by a determined angular value, and means for connecting a first end of said cam to said basic element, characterized in that it further comprises a lug, means for mounting said lug in rotation relative to said cam around said axis longitudinal of said cam, said lug being shaped to be housed in a corner of the square inner section of the hollow tube when the latter is plugged into said cam, and means for limiting the amplitude to an angle value "α" of the rotation of said lug relative to said cam. Other characteristics and advantages of the present invention will appear during the following description given with reference to the drawings annexed by way of illustration, but in no way limiting, in which:
Les figures 1 et 2 représentent le schéma de principe d'un mode de réalisation d'un dispositif selon l'invention permettant d'assembler un tube creux de section intérieure de forme sensiblement carrée avec un élément de base, la figure 1 représentant une coupe longitudinale du dispositif référencée I-I sur la figure 2 et la figure 2 représentant une coupe transversale en bout référencée II— 11 sur la figure 1, etFigures 1 and 2 show the block diagram of an embodiment of a device according to the invention for assembling a hollow tube of inner section of substantially square shape with a base member, Figure 1 showing a section longitudinal of the device referenced II in FIG. 2 and FIG. 2 showing a cross section at the end referenced II— 11 in FIG. 1, and
Les figures 3 et 4 représentent un mode de réalisation préférentiel d'un dispositif selon l'invention en accord avec les figures 1 et 2, la figure 3 représentant une coupe longitudinale du dispositif référencée III-III sur la figure 4 et la figure 4 représentant une vue en bout du dispositif selon la figure 3.Figures 3 and 4 show a preferred embodiment of a device according to the invention in accordance with Figures 1 and 2, Figure 3 showing a longitudinal section of the device referenced III-III in Figure 4 and Figure 4 representing an end view of the device according to FIG. 3.
Les figures représentent deux modes de réalisation différents du dispositif selon l'invention permettant d'assembler un tube creux de section intérieure de forme sensiblement carrée avec un élément de base. Cependant, dans le but de simplifier la présente description, les mêmes références y désignent les mêmes éléments quelle que soit la figure sur laquelle elles apparaissent. En se référant plus particulièrement aux deux figures 1 et 2, le dispositif selon l'invention permet d'assembler un tube creux 1 de section intérieure de forme sensiblement carrée avec un élément de base 2.The figures represent two different embodiments of the device according to the invention making it possible to assemble a hollow tube of inner section of substantially square shape with a basic element. However, in order to simplify the present description, the same references designate the same elements there regardless of the figure in which they appear. Referring more particularly to the two figures 1 and 2, the device according to the invention makes it possible to assemble a hollow tube 1 of internal section of substantially square shape with a base element 2.
Ce dispositif comporte essentiellement une came 10 de forme oblongue sensiblement cylindrique définie suivant un axe longitudinal donné 1 1 , dont la section extérieure passe progressivement, au moins une fois, d'une valeur minimale inférieure au côté de la section intérieure carrée du tube 1 à une valeur maximale comprise entre le côté et la diagonale de cette section intérieure carrée, de façon que le tube puisse être enfilé sur la came sans frottement et coincé sur la surface extérieure de la came 10 après une rotation d'une valeur angulaire déterminée autour de l'axe 1 1 de la came.This device essentially comprises a cam 10 of oblong substantially cylindrical shape defined along a given longitudinal axis 1 1, the outer section of which progressively passes, at least once, from a minimum value less than the side of the square inner section of the tube 1 to a maximum value between the side and the diagonal of this square interior section, so that the tube can be threaded onto the cam without friction and wedged on the exterior surface of the cam 10 after a rotation of a determined angular value around axis 1 1 of the cam.
Dans une réalisation préférentielle, la section extérieure de la came 10 présente une symétrie par rapport à au moins deux axes perpendiculaires, par exemple les deux axes 12 et 13 sur la figure 2, et comporte quatre renflements 14, 15, ... sensiblement centrés sur ces axes de symétrie. De cette façon, la came 10 présente quatre dépressions 16, 17, ... comprises respectivement entre deux renflements 14, 15, ... consécutifs. Des moyens 20 sont en outre prévus pour lier une première extrémité 21 de la came 10 à l'élément de base 2. Ces moyens peuvent être de tous types bien connus en eux-mêmes et ne seront donc pas plus amplement décrits ici.In a preferred embodiment, the external section of the cam 10 has symmetry with respect to at least two perpendicular axes, for example the two axes 12 and 13 in Figure 2, and has four bulges 14, 15, ... substantially centered on these axes of symmetry. In this way, the cam 10 has four depressions 16, 17, ... lying respectively between two bulges 14, 15, ... consecutive. Means 20 are further provided for connecting a first end 21 of the cam 10 to the base element 2. These means can be of any type well known in themselves and will therefore not be described more fully here.
Selon une caractéristique de l'invention, le dispositif comporte en outre un ergot 30 et des moyens pour le monter en rotation par rapport à la came 10, autour de son axe longitudinal 1 1. Comme illustré sur les figures 1 à 4, l'ergot 30 est conformé pour venir se loger dans coin 31 de la section intérieure carrée du tube creux 1 lorsque ce dernier est enfiché sur la came 10. Sont en outre prévus des moyens 32 pour limiter à une valeur d'angle "α" l'amplitude de la rotation de cet ergot 30 par rapport à la came 10.According to a characteristic of the invention, the device further comprises a lug 30 and means for mounting it in rotation relative to the cam 10, around its longitudinal axis 1 1. As illustrated in FIGS. 1 to 4, the lug 30 is shaped to be housed in a corner 31 of the square inner section of the hollow tube 1 when the latter is plugged into the cam 10. Means 32 are further provided for limiting to an angle value "α" l ' amplitude of the rotation of this lug 30 relative to the cam 10.
Comme illustré sur les figures et plus particulièrement sur la figure 2, l'ergot présente de façon préférentielle une forme inscrite dans un premier angle 33 de valeur "β" et dont le sommet est situé sur l'axe longitudinal 1 1 de la came 10 et la valeur "α" de l'amplitude de la rotation de cet ergot par rapport à la came est sensiblement égale à — .As illustrated in the figures and more particularly in Figure 2, the lug preferably has a shape inscribed in a first angle 33 of value "β" and the apex of which is located on the longitudinal axis 11 of the cam 10 and the value "α" of the amplitude of rotation of this lug relative to the cam is substantially equal to -.
Avantageusement, la partie de l'ergot 30 qui est apte à se loger dans un coin 31 de la section intérieure carrée du tube creux 1 lorsqu'il est enfiche sur la came est inscrite dans un dièdre droit pour que, par cette partie, il puisse parfaitement épouser les deux parois perpendiculaires qui forment le coin intérieur 31 du tube 1 dans lequel il est apte à venir se loger.Advantageously, the part of the lug 30 which is able to be housed in a corner 31 of the square internal section of the hollow tube 1 when it is plugged into the cam is inscribed in a right dihedral so that, by this part, it can perfectly match the two perpendicular walls which form the inner corner 31 of the tube 1 in which it is able to be housed.
Dans une réalisation possible et avantageuse, les moyens 32 pour monter l'ergot 30 en rotation par rapport à la came 10 autour de son axe longitudinal 1 1 comportent un palier de rotation 34 solidaire de la seconde extrémité 35 de la came et centré sur l'axe longitudinal 1 1, une bague 36 montée en rotation dans le palier 34 et une gorge 37 réalisée dans le palier 34. La gorge 37 est délimitée par deux parois d'extrémités 38, 39 respectivement définies dans deux plans se coupant suivant l'axe longitudinal 1 1 de la came et formant un second angle d'une valeur "ω" dont la valeur est égale à α + β.In a possible and advantageous embodiment, the means 32 for mounting the lug 30 in rotation relative to the cam 10 about its longitudinal axis 1 1 comprise a rotation bearing 34 integral with the second end 35 of the cam and centered on the 'longitudinal axis 1 1, a ring 36 rotatably mounted in the bearing 34 and a groove 37 formed in the bearing 34. The groove 37 is delimited by two end walls 38, 39 respectively defined in two planes intersecting the longitudinal axis 1 1 of the cam and forming a second angle with a value "ω" whose value is equal to α + β.
Dans les deux modes de réalisation illustrés sur les figures, la valeur "ω" du second angle est égale à — + β.In the two embodiments illustrated in the figures, the value "ω" of the second angle is equal to - + β.
L'ergot 30 est solidaire de la bague 36 et est positionné sur celle-ci de façon qu'il soit au moins partiellement situé dans la gorge 37 et qu'il puisse venir buter contre les deux parois d'extrémités 38 et 39 de la gorge lorsqu'il pivote par rapport à la came comme explicité ci-après dans la description du fonctionnement du dispositif. Le dispositif qui a été décrit ci-dessus dans ses fonctions générales est plus particulièrement illustré sur les figures 1 et 2, mais il peut présenter une structure comme celle qui est illustrée sur les figures 3 et 4.The lug 30 is integral with the ring 36 and is positioned thereon so that it is at least partially located in the groove 37 and that it can abut against the two end walls 38 and 39 of the groove when it pivots relative to the cam as explained below in the description of the operation of the device. The device which has been described above in its general functions is more particularly illustrated in FIGS. 1 and 2, but it can have a structure like that which is illustrated in FIGS. 3 and 4.
Dans le mode de réalisation selon les figures 3 et 4, la came 10 comporte au moins un arbre central 40 ayant une forme extérieure cylindrique non de révolution et un manchon cylindrique creux 41 , la paroi intérieure 42 du manchon ayant une section complémentaire de la section extérieure de l'arbre central non de révolution 40 de façon que cet arbre puisse coulisser dans l'intérieur creux du manchon, mais sans pouvoir pivoter autour de son axe qui est en fait l'axe longitudinal 1 1 défini ci-avant. La surface extérieure 43 du manchon constitue alors la surface extérieure de la came telle qu'elle a été définie ci-avant et la première extrémité 21 de la came est constituée par une première extrémité 44 de l'arbre central 40.In the embodiment according to FIGS. 3 and 4, the cam 10 comprises at least one central shaft 40 having a cylindrical external shape not of revolution and a hollow cylindrical sleeve 41, the internal wall 42 of the sleeve having a section complementary to the section exterior of the central shaft not of revolution 40 so that this shaft can slide in the hollow interior of the sleeve, but without being able to pivot around its axis which is in fact the longitudinal axis 1 1 defined above. The external surface 43 of the sleeve then constitutes the external surface of the cam as it has been defined above and the first end 21 of the cam is constituted by a first end 44 of the central shaft 40.
Dans une réalisation avantageuse, le dispositif comporte aussi une rainure 50 réalisée sur la surface extérieure de la came, plus particulièrement dans les renflements 14, 15, ..., le rainure étant principalement contenue dans un plan qui est sensiblement perpendiculaire à l'axe longitudinal 1 1 et étant apte à recevoir, comme explicité ci-après, un picot 60 en saillie et solidaire de la paroi intérieure du tube 1. Dans ce cas de réalisation, le dispositif comporte avantageusement des moyens de blocage du manchon 41 sur l'arbre central 40. Ces moyens de blocage plus particulièrement illustrés sur la figure 3 comportent u n épaulement 51 réalisé à la première extrémité 44 de l'arbre central 40 et un écrou 52 apte à être vissé sur la seconde extrémité 53 de l'arbre central émergeant du manchon 41. Avantageusement, l'écrou 52 est du type "imperdable", pour rester toujours attaché au manchon 41 même si l'arbre central 40 n'est plus monté en association avec le manchon 41. Un écrou du type "imperdable" est bien connu en lui-même. La figure 3 en représente un mode de réalisation possible et, le dessin étant suffisamment explicite, sa structure ne sera pas plus amplement décrite ici.In an advantageous embodiment, the device also comprises a groove 50 produced on the external surface of the cam, more particularly in the bulges 14, 15, ..., the groove being mainly contained in a plane which is substantially perpendicular to the axis longitudinal 11 and being able to receive, as explained below, a protruding pin 60 and integral with the inner wall of the tube 1. In this embodiment, the device advantageously comprises means for blocking the sleeve 41 on the central shaft 40. These locking means more particularly illustrated in FIG. 3 comprise a shoulder 51 produced at the first end 44 of the central shaft 40 and a nut 52 able to be screwed onto the second end 53 of the emerging central shaft of the sleeve 41. Advantageously, the nut 52 is of the "captive" type, so as to always remain attached to the sleeve 41 even if the central shaft 40 is no longer mounted in association with the sleeve 41. A nut of the "captive" type is well known in itself. FIG. 3 represents a possible embodiment thereof and, the drawing being sufficiently explicit, its structure will not be described more fully here.
On constate que la structure du dispositif décrite ci-avant en regard des figures 1 à 4 permet sans aucune difficulté de réaliser au moins la came 10 et l'ergot 30 dans des matériaux métalliques comme ceux dans lesquels sont réalisés les tubes creux à assembler, de même éventuellement que le manchon 41 , l'arbre central 40, l'écrou 52 et la bague 37. Dans une réalisation préférentielle et avantageuse, la came 10 (ou le manchon 41 ) et le palier 34 sont réalisés en une seule pièce comme représenté plus particulièrement sur les figures 1 et 3.It is noted that the structure of the device described above with reference to Figures 1 to 4 allows without any difficulty to achieve at least the cam 10 and the lug 30 in metallic materials such as those in which the hollow tubes to be assembled are made, as optionally as the sleeve 41, the central shaft 40, the nut 52 and the ring 37. In a preferred and advantageous embodiment , the cam 10 (or the sleeve 41) and the bearing 34 are produced in one piece as shown more particularly in FIGS. 1 and 3.
Les figures 1 à 4 représentent deux modes de réalisation possibles du dispositif selon l'invention permettant d'assembler un tube creux de section intérieure de forme sensiblement carrée avec un élément de base mais, quel que soit le mode de réalisation de ce dispositif, son fonctionnement est identique.Figures 1 to 4 show two possible embodiments of the device according to the invention for assembling a hollow tube of inner section of substantially square shape with a basic element but, whatever the embodiment of this device, its operation is identical.
Lorsque l'on veut réaliser un assemblage d'un tube creux 1 d e section intérieure de forme sensiblement carrée avec un élément de base 2, on commence par solidariser, par tout moyen, la première extrémité 21 de la came 10 avec l'élément de base 2, par exemple par boulonnage, enclipsage, soudage, et même par l'obtention, en une seule pièce, de l'élément de base et de la came selon la réalisation illustrée sur les figures 1 et 2, ou de l'élément de base et de l'arbre central selon la réalisation illustrée sur les figures 3 et 4.When it is desired to assemble a hollow tube 1 of interior section of substantially square shape with a base element 2, one begins by securing, by any means, the first end 21 of the cam 10 with the element base 2, for example by bolting, clipping, welding, and even by obtaining, in one piece, the base element and the cam according to the embodiment illustrated in FIGS. 1 and 2, or the element base and central shaft according to the embodiment illustrated in Figures 3 and 4.
On positionne tout d'abord l'ergot 30 de façon qu'il soit sensiblement au milieu de la gorge 37, comme illustré en traits interrompus sur la figure 2. Dans cette position, on enfiche le tube 1 sur la came 10 de façon que l'ergot 30 épouse un coin 31 de la section intérieure carrée du tube, sur une longueur voulue, par exemple jusqu'à ce qu'il vienne en butée contre l'élément de base 2. Cette position du tube est représentée en traits interrompus sur la figure 2. On effectue ensuite un pivotement du tube 1 par rapport à la cameFirst of all, the lug 30 is positioned so that it is substantially in the middle of the groove 37, as illustrated in broken lines in FIG. 2. In this position, the tube 1 is plugged onto the cam 10 so that the lug 30 follows a corner 31 of the square inner section of the tube, over a desired length, for example until it abuts against the base element 2. This position of the tube is shown in broken lines in FIG. 2. The tube 1 is then pivoted relative to the cam
10, dans le sens senestrorsum par référence à la figure 2, d'environ quarante cinq degrés pour arriver à la position illustrée en traits pleins sur cette figure 2. Dans cette position, les quatre côtés de la paroi intérieure du tube sont coincés sur les quatre renflements 14, 15, ... de la came. Par ailleurs, l'ergot 30 qui est logé dans l'un 31 des coins du tube 1 a été entraîné dans cette rotation et, en conséquence, la rotation du tube est également limitée par l'arrivée en butée de l'ergot 30 contre l'une 38 des deux parois d'extrémités 38, 39 de la gorge 37. Cette butée empêche que l'on dépasse la position du tube 1 dans laquelle il est coincé sur les renflements 14, 15, ... de la came 10, et évite l'un des inconvénients mentionnés dans le préambule de la présente description.10, in the direction senestrorsum with reference to FIG. 2, of approximately forty five degrees to arrive at the position illustrated in solid lines in this FIG. 2. In this position, the four sides of the inner wall of the tube are wedged on the four bulges 14, 15, ... of the cam. Furthermore, the lug 30 which is housed in one 31 of the corners of the tube 1 has been driven in this rotation and, consequently, the rotation of the tube is also limited by the arrival in abutment of the lug 30 against one 38 of the two end walls 38, 39 of the groove 37. This stop prevents that one exceeds the position of the tube 1 in which it is stuck on the bulges 14, 15, ... of the cam 10 , and avoids one of the drawbacks mentioned in the preamble to this description.
Dans le mode d'utilisation décrit ci-dessus, le tube 1 a subi une rotation dans le sens senestrorsum. Il est cependant évident que l'on aurait pu lui faire subir une rotation de même amplitude, mais dans le sens dextrorsum, ce qui aurait permis au tube 1 de prendre la même position relative que celle illustrée sur la figure 2 en traits pleins, mais avec l'ergot 30 en butée contre l'autre paroi d'extrémité 39 de la gorge 37.In the mode of use described above, the tube 1 has undergone a rotation in the senestrorsum direction. It is however obvious that one could have made it undergo a rotation of the same amplitude, but in the dextrorsum direction, which would have allowed the tube 1 to take the same relative position as that illustrated in FIG. 2 in solid lines, but with the lug 30 in abutment against the other end wall 39 of the groove 37.
Accessoirement, lorsque la came 10 comporte une rainure 50 comme illustré sur la figure 3 et que le tube 1 comporte un picot 60, le tube est enfiché de la même façon que décrit ci-avant avec le picot 60 situé dans l'un des espaces délimités entre la paroi intérieure du tube et les dépressions 16, 17, ... comprises entre deux renflements 14, 15, ... consécutifs. En fin de rotation du tube 1 autour de la came 10, le picot 60 se loge dans la partie de la rainure 50 se trouvant sur le renflement qui vient au contact du côté de la paroi intérieure du tube qui porte ce picot.Incidentally, when the cam 10 has a groove 50 as illustrated in FIG. 3 and the tube 1 has a spike 60, the tube is inserted in the same way as described above with the spike 60 located in one of the spaces delimited between the inner wall of the tube and the depressions 16, 17, ... between two bulges 14, 15, ... consecutive. At the end of rotation of the tube 1 around the cam 10, the pin 60 is housed in the part of the groove 50 located on the bulge which comes into contact with the side of the inner wall of the tube which carries this pin.
Cette dernière réalisation permet que le tube 1 ne se désolidarise de l'élément de base 2 dans le cas où une traction trop violente serait exercée sur le tube par rapport à l'élément de base suivant une direction comportant au moins une composante suivant l'axe longitudinal 1 1.This latter embodiment allows the tube 1 not to be detached from the base element 2 in the event that too violent a traction is exerted on the tube relative to the base element in a direction comprising at least one component along the longitudinal axis 1 1.
Dans le mode de réalisation décrit à titre d'exemple en regard des figures 1 à 4, l'ergot 30 est solidaire d'une bague 36 qui est montée rotative sur un palier de rotation 34 réalisé sur la came 10. Cependant, il est bien évident que l'invention doit être comprise de la même façon quand les moyens pour monter l'ergot en rotation par rapport à la came 10 autour de son axe longitudinal 1 1 sont constitués par des moyens pour solidariser cet ergot avec un coin 31 de la section intérieure carrée du tube creux 1. Ces moyens de solidarisation peuvent être de tout type, par exemple de la colle, des vis et/ou des rivets de fixation, de la soudure, etc.In the embodiment described by way of example with reference to FIGS. 1 to 4, the lug 30 is integral with a ring 36 which is rotatably mounted on a rotation bearing 34 produced on the cam 10. However, it is quite obvious that the invention must be understood in the same way when the means for mounting the lug in rotation relative to the cam 10 about its longitudinal axis 1 1 are constituted by means for securing this lug with a wedge 31 of the square inner section of the hollow tube 1. These securing means can be of any type, for example glue, screws and / or fixing rivets, welding, etc.
Ce deuxième mode de réalisation des moyens pour monter l'ergot en rotation par rapport à la came 10 autour de son axe longitudinal 1 1 n'ont pas été spécifiquement illustrés car leur représentation se déduit sans aucune difficulté de l'illustration donnée par les figures 1 à 4. Dans ce deuxième mode de réalisation, la bague 36 n'est plus nécessaire mais, quand le tube creux 1 pivote par rapport à la came, le blocage est obtenu de la même façon que celle décrite ci-avant pour le mode de réalisation illustré sur ces figures. This second embodiment of the means for mounting the lug in rotation relative to the cam 10 about its longitudinal axis 11 has not been specifically illustrated because their representation is deduced without any difficulty from the illustration given by the figures 1 to 4. In this second embodiment, the ring 36 is no longer necessary but, when the hollow tube 1 pivots relative to the cam, the blocking is obtained in the same way as that described above for the mode illustrated in these figures.

Claims

R E V E N D I C A T I O N S 1- Dispositif permettant d'assembler un tube creux ( 1 ) de section intérieure de forme sensiblement carrée avec un élément de base (2), comportant essentiellement une came ( 10) de forme oblongue sensiblement cylindrique définie suivant un axe longitudinal donné ( 1 1 ), dont la section extérieure passe progressivement, au moins une fois, d'une valeur minimale inférieure au côté de la section intérieure carrée du tube à une valeur maximale comprise entre le côté et la diagonale de cette section intérieure carrée, de façon que le tube puisse être enfilé sur la came ( 10) sans frottement et coincé sur la surface extérieure de la came après une rotation autour de son axe d'une valeur angulaire déterminée, et des moyens pour lier une première extrémité (21 ) de ladite came audit élément de base, caractérisé par le fait qu'il comporte en outre un ergot ( 30), des moyens pour monter ledit ergot en rotation par rapport à ladite came ( 10) autour dudit axe longitudinal ( 11) de ladite came ( 10), ledit ergot étant conformé pour venir se loger dans un coin (31) de la section intérieure carrée du tube creux ( 1 ) lorsque ce dernier est enfiché sur ladite came ( 10), et des moyens (32) pour limiter à une valeur d'angle "α" l'amplitude de la rotation dudit ergot (30) par rapport à ladite came ( 10). 2- Dispositif selon la revendication 1 , caractérisé par le fait que la section extérieure de ladite came ( 10) présente une symétrie par rapport à au moins deux axes perpendiculaires ( 12, 13) et comporte quatre renflements ( 14, 15, ...) sensiblement centrés sur lesdits axes de symétrie, ledit ergot (30) étant inscrit dans un premier angle (33) de valeur "β" dont le sommet est situé sur l'axe longitudinal ( 11 ) de ladite came (10), la valeur "α" de l'amplitude de la rotation dudit ergot (30) par rapport à ladite came ( 10) étant sensiblement égale a y . CLAIMS 1- Device for assembling a hollow tube (1) of interior section of substantially square shape with a base element (2), essentially comprising a cam (10) of oblong substantially cylindrical shape defined along a given longitudinal axis (1 1), the outer section of which progressively passes, at least once, from a minimum value less than the side of the square inner section of the tube to a maximum value between the side and the diagonal of this square inner section, so that the tube can be threaded onto the cam (10) without friction and wedged on the outer surface of the cam after a rotation around its axis by a determined angular value, and means for connecting a first end (21) of said cam to said basic element, characterized in that it further comprises a lug (30), means for mounting said lug in rotation relative to said cam e (10) around said longitudinal axis (11) of said cam (10), said lug being shaped to be received in a corner (31) of the square inner section of the hollow tube (1) when the latter is plugged onto said cam (10), and means (32) for limiting to an angle value "α" the amplitude of the rotation of said lug (30) relative to said cam (10). 2- Device according to claim 1, characterized in that the outer section of said cam (10) has symmetry with respect to at least two perpendicular axes (12, 13) and comprises four bulges (14, 15, ... ) substantially centered on said axes of symmetry, said lug (30) being inscribed in a first angle (33) of value "β" whose apex is located on the longitudinal axis (11) of said cam (10), the value "α" of the amplitude of rotation of said lug (30) relative to said cam (10) being substantially equal ay.
3- Dispositif selon la revendication 2, caractérisé par le fait que les moyens pour monter ledit ergot sur ladite came ( 10) en rotation autour de l'axe longitudinal (11 ) de ladite came comportent un palier de rotation (34) solidaire de la seconde extrémité (35) de ladite came ( 10), ledit palier (34) étant centré sur ledit axe longitudinal ( 1 1 ), une bague (36) montée en rotation dans ledit palier (34), et une gorge (37) réalisée dans ledit palier, ladite gorge étant délimitée par deux parois d'extrémités (38, 39) respectivement définies dans deux plans se coupant suivant l'axe longitudinal ( 11 ) de la came et formant un second angle de valeur "ω", ledit ergot (30) étant solidaire de ladite bague (36) et positionné sur celle-ci de façon qu'il soit au moins partiellement situé dans ladite gorge (37) et qu'il puisse venir buter contre les deux parois d'extrémités (38, 39) de ladite gorge lorsqu'il pivote par rapport à ladite came ( 10), la valeur "ω" dudit second angle étant égale àα + β. 4- Dispositif selon l'une des revendications précédentes, caractérisé par le fait que ladite came (10) comporte au moins un arbre central (40) ayant une forme extérieure cylindrique non de révolution et un manchon cylindrique creux (41 ), la paroi intérieure du manchon ayant une section complémentaire de la section extérieure de l'arbre central (40) de façon que ledit arbre puisse coulisser dans l'intérieur creux dudit manchon sans pouvoir pivoter autour de son axe, la surface extérieure (43) dudit manchon constituant la surface extérieure de ladite came ( 10) et la première extrémité (21 ) de ladite came étant constituée par une première extrémité (44) dudit arbre central.3- Device according to claim 2, characterized in that the means for mounting said lug on said cam (10) in rotation about the longitudinal axis (11) of said cam comprise a rotation bearing (34) integral with the second end (35) of said cam (10), said bearing (34) being centered on said longitudinal axis (1 1), a ring (36) rotatably mounted in said bearing (34), and a groove (37) made in said bearing, said groove being delimited by two end walls (38, 39) respectively defined in two planes intersecting along the longitudinal axis (11) of the cam and forming a second angle of value "ω", said lug (30) being integral with said ring (36) and positioned on it so that it is at least partially located in said groove (37) and that it can abut against the two end walls (38, 39) of said groove when it pivots relative to said cam (10), the value "ω" of said second angle being equal to α + β. 4- Device according to one of the preceding claims, characterized in that said cam (10) comprises at least one central shaft (40) having an outer cylindrical shape not of revolution and a hollow cylindrical sleeve (41), the inner wall of the sleeve having a section complementary to the external section of the central shaft (40) so that said shaft can slide in the hollow interior of said sleeve without being able to pivot about its axis, the external surface (43) of said sleeve constituting the outer surface of said cam (10) and the first end (21) of said cam being constituted by a first end (44) of said central shaft.
5- Dispositif selon l'une des revendications précédentes, caractérisé par le fait qu'il comporte une rainure (50) réalisée sur la surface extérieure5- Device according to one of the preceding claims, characterized in that it comprises a groove (50) produced on the outer surface
(43) de ladite came, ladite rainure (50) étant contenue dans un plan sensiblement perpendiculaire audit axe longitudinal ( 1 1 ) et étant apte à recevoir un picot (60) solidaire de la paroi intérieure dudit tube creux ( 1 ).(43) of said cam, said groove (50) being contained in a plane substantially perpendicular to said longitudinal axis (1 1) and being capable of receiving a pin (60) integral with the interior wall of said hollow tube (1).
6- Dispositif selon l'une des revendications 4 et 5, caractérisé par le fait qu'il comporte des moyens de blocage dudit manchon (41 ) sur ledit arbre central (40).6- Device according to one of claims 4 and 5, characterized in that it comprises means for locking said sleeve (41) on said central shaft (40).
7- Dispositif selon la revendication 6, caractérisé par le fait que lesdits moyens de blocage dudit manchon (41 ) sur ledit arbre central (40) comportent un épaulement (51 ) réalisé à la première extrémité (44) dudit arbre central (40) et un écrou (52) apte à être vissé sur la seconde extrémité (53) dudit arbre central émergeant dudit manchon (41 ).7- Device according to claim 6, characterized in that said means for locking said sleeve (41) on said central shaft (40) comprises a shoulder (51) formed at the first end (44) of said central shaft (40) and a nut (52) capable of being screwed onto the second end (53) of said central shaft emerging from said sleeve (41).
8- Dispositif selon la revendication 7, caractérisé par le fait que ledit écrou (52) est du type imperdable.8- Device according to claim 7, characterized in that said nut (52) is of the captive type.
9- Dispositif selon l'une des revendications précédentes, caractérisé par le fait que la partie dudit ergot (30) apte à se loger dans un coin (31 ) de la section intérieure carrée du tube creux ( 1 ) lorsque ce dernier est enfiché sur ladite came (10) est inscrite dans un dièdre droit.9- Device according to one of the preceding claims, characterized in that the part of said lug (30) adapted to be housed in a corner (31) of the square inner section of the hollow tube (1) when the latter is inserted on said cam (10) is inscribed in a right dihedral.
10- Dispositif selon la revendication 1, caractérisé par le fait que les moyens pour monter ledit ergot (30) en rotation par rapport à ladite came ( 10) autour dudit axe longitudinal (11 ) de ladite came ( 10) sont constitués par des moyens pour solidariser ledit ergot (30) avec un coin (31 ) de la section intérieure carrée du creux ( 1 ). 10- Device according to claim 1, characterized in that the means for mounting said lug (30) in rotation relative to said cam (10) around said longitudinal axis (11) of said cam (10) are constituted by means for securing said lug (30) with a corner (31) of the square interior section of the hollow (1).
PCT/FR1996/001360 1995-09-13 1996-09-05 Device for assembling a square internal cross section hollow tube with a base element WO1997010445A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR95/10804 1995-09-13
FR9510804A FR2738601B1 (en) 1995-09-13 1995-09-13 DEVICE FOR ASSEMBLING A HOLLOW TUBE OF SQUARE INTERIOR SECTION WITH A BASE ELEMENT

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WO1997010445A1 true WO1997010445A1 (en) 1997-03-20

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WO (1) WO1997010445A1 (en)

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KR102276763B1 (en) * 2017-04-01 2021-07-13 엑스-폴 아시아 리미티드 End assembly for dance exercise poles

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1062963A (en) * 1963-07-09 1967-03-22 Savigny Atel Improvements in assembly means for tubular elements
US4770560A (en) * 1987-05-29 1988-09-13 Ott Donald E Self-tapping connector
FR2675409A1 (en) * 1991-04-22 1992-10-23 Hassid Jean Pierre Device enabling a hollow tube, of substantially square-shaped internal cross-section, to be joined to a base element

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1062963A (en) * 1963-07-09 1967-03-22 Savigny Atel Improvements in assembly means for tubular elements
US4770560A (en) * 1987-05-29 1988-09-13 Ott Donald E Self-tapping connector
FR2675409A1 (en) * 1991-04-22 1992-10-23 Hassid Jean Pierre Device enabling a hollow tube, of substantially square-shaped internal cross-section, to be joined to a base element

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CN1196110A (en) 1998-10-14
FR2738601B1 (en) 1997-11-07
FR2738601A1 (en) 1997-03-14

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