EP2783606A1 - Improved telescopic rod with spring - Google Patents

Improved telescopic rod with spring Download PDF

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Publication number
EP2783606A1
EP2783606A1 EP13305407.2A EP13305407A EP2783606A1 EP 2783606 A1 EP2783606 A1 EP 2783606A1 EP 13305407 A EP13305407 A EP 13305407A EP 2783606 A1 EP2783606 A1 EP 2783606A1
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EP
European Patent Office
Prior art keywords
spring
zone
tube
outer diameter
rod according
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EP13305407.2A
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German (de)
French (fr)
Inventor
Jean-Marc Morel
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Mobois
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Mobois
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Priority to EP13305407.2A priority Critical patent/EP2783606A1/en
Publication of EP2783606A1 publication Critical patent/EP2783606A1/en
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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47H—FURNISHINGS FOR WINDOWS OR DOORS
    • A47H1/00—Curtain suspension devices
    • A47H1/02—Curtain rods
    • A47H1/022—Curtain rods extensible

Definitions

  • the invention relates to the field of telescopic rods in particular for supporting curtains or net curtains for habitat openings or to support so-called shower curtains which allow to delimit and seal the space around an element of projection of water forming shower.
  • Any telescopic element intended to be compressed between two walls substantially parallel to each other, is within the scope of the invention.
  • telescopic rods for the aforementioned uses. These rods generally comprise two tubes arranged telescopically, the inner tube being provided at its end covered by the outer tube of a compression spring.
  • the latter may be riveted at one end to the end of the inner tube; at its second end, the compression spring has for example a V-shaped hook for slidably hooking on the inner wall of the outer tube.
  • the compression spring has a single outer diameter, slightly less than the inner diameter of the outer tube. Spring turns are non-contiguous except at both ends.
  • This type of spring performs its function properly inside the tubes, namely to ensure longitudinal compression which essentially allows to press and maintain in compression such rods between two walls parallel to each other; advantageously, the plating is obtained for an inter-wall distance range.
  • the main interest of these rods is therefore adaptability to different inter-wall distances.
  • the invention aims to overcome the disadvantages of the state of the art and in particular to provide a telescopic rod provided with a compression stroke greater than those of the prior art, all things being equal.
  • 'Telescopic rod' means any structurally equivalent telescopic element. Various fields of application may therefore come within the scope of the invention.
  • a telescopic rod comprising a first so-called coaxial outer tube with a second so-called inner tube, a spring-type elastic compression element mounted inside said tubes in such a way that the first end of the spring comprises contiguous turns and is in sliding contact in a sliding direction of the first tube vis-à-vis the second tube and in blocking contact in the other direction of sliding; the second end of the spring comprises contiguous turns and is connected to the inner wall of the second tube.
  • said spring comprises a first zone having a first outer diameter and a second zone having a second outer diameter smaller than the first outer diameter.
  • the second zone of said spring is connected to said second tube at a distance from its end from which it exceeds, said distance - d being between 6% and 90% of the total length of said second tube.
  • the preferred link consists of a punching made on the second tube. Any other mechanical or chemical or other, technically equivalent, connection is within the scope of the invention.
  • the contiguous turns constituting the end of the second zone of the spring extend between 1% and 10% of the total length of the spring at rest.
  • said second zone of the spring is fixed in the second tube so that more than 50% of the length of said second zone is covered by said second tube.
  • the ratio of the outer diameter of the second zone of the spring to the outer diameter of the first zone of the spring is between 0.6 and 0.9, preferably of the order of 0.8.
  • the axial length of the first zone is substantially equal to the axial length of the second zone.
  • the contiguous turns constituting the end of the first zone of the spring extend over a length of between about 1% to about 10% of the total length of the spring.
  • the Figures 1 and 2 therefore show a known rod which comprises a first tube 1, said outside, arranged coaxially and telescopically with a second tube 2 said inside.
  • a resilient compression element 3 of the spring type is mounted inside the tubes, more precisely this element is fixed by one end inside the inner tube 2, while its second end is free and protrudes from the inner tube 2 ; more exactly the protruding end of the spring 3 is covered and housed inside the first tube 1; it ends with a hook 4 in rubbing contact with the inner wall of the outer tube 1.
  • the contact is such that it creates a sliding in a first direction of sliding of the inner tube 2 vis-à-vis the outer tube 1, and a jam in the other direction of sliding.
  • One or more stoppings 5 may constitute the mechanical connection between the end of the spring 3 and the end of the inner tube 2.
  • the spring 3 has contiguous turns on its end zone 30 fixed inside the inner tube 2. This makes it possible to ensure the connection by punching.
  • the outer diameter of the spring 3 is less than that of the rest of the spring. This diameter is chosen substantially equal to that of the inner diameter of the inner tube; a frictional connection is advantageously preferred.
  • the figure 2 shows the rod in the compressed state. It can be seen that a compression stroke C1 is produced; it is equal to the product of the inter-turn distance (at rest) by the number of turns.
  • FIGS. 3 and 4 correspond to a rod according to the invention. These figures voluntarily show a rod of the same dimensions as that schematized on the Figures 1 and 2 , in order to highlight the differences.
  • the figure 3 shows an uncompressed rod while the figure 4 shows the same rod in the compressed state. Between these two states, the compression stroke C2 is greater than in the prior art, all things being equal.
  • the rod according to the invention differs from that just described by the spring 3: more precisely one of the ends of this spring 3 further has a zone 33 axially interposed between the end zone to closed turns 30 and the zone 31 with non-contiguous turns and greater in diameter than the zones 30 and 31.
  • the zone 33 thus has a constant outside diameter and equal to that of the zone 30, that is to say less than that zones 31 and 32.
  • the zone 33 being added to the other zones, the total length of the spring is greater than that of a known spring.
  • the zone 33 extends both inside the inner tube 2 and beyond its end covered by the outer tube 1.
  • the zone 33 at least partially inside the inner tube 2 makes it possible to partially compress it at this point and thereby obtain a larger stroke C2 than in the prior art.
  • the value of the stroke C2 is partly and also determined by the position of the punching 5.
  • a maximum stroke value is obtained when the zone 33 is fully compressed inside the small diameter tube.
  • the punching 5 is located near the end of the inner tube 2 not covered by the outer tube 1.
  • zones 30 and 33 have an outside diameter of 6.4 mm while zones 31 and 32 have a diameter of 7.7 mm.
  • a ratio inner diameter to outer diameter of about 0.8 is therefore obtained. This ratio can vary between 0.7 and 0.9.
  • the outer tube 1 has an outside diameter of about 9 mm and an inside diameter of about 8.2 mm.
  • the inner tube 2 has an outside diameter of about 7.5 mm and an inside diameter of about 6.7 mm.
  • the length of a spring 3 according to Figures 1 and 2 is of the order of 82 mm at rest while the rest length of a spring according to the Figures 3 and 4 (The invention) is of the order of 150 mm.
  • the punching 5 is generally made about 1 cm from the end of the inner tube 2 covered by the outer tube 1. According to the invention, it is chosen to punch about 5 cm from this same end. This is what is called 'certain' distance in this text.
  • the zone 33 is covered by the second tube 2 over more than half of its length. This characteristic, associated with the positioning of the punching 5, allows the initially non-contiguous turns to compress within the inner tube 2.
  • the stroke C1 is of the order of 15 mm.
  • the stroke C2 is of the order of 25 mm.
  • the gain is not neglected and provides greater latitude for adjusting the rod. This considerable advantage is obtained in a simple and inexpensive way.
  • the tubes 1 and 2 may be made of a material such as steel.
  • the spring 3 is preferably made of any suitable metal.
  • window openings for example of widths between 40 and 65 cm can be equipped with such rods.
  • openings 25 to 40 cm, or 65 to 110 cm can be equipped with such rods.

Abstract

The rod has an outer tube coaxial and telescopic with an inner tube (2). A spring (3) is mounted within the tubes, where the spring includes a set of zones (31, 32) provided with a hook (4) in sliding contact in a sliding direction of the outer tube with respect to the inner tube, and in blocking contact in a direction opposite to the sliding direction. Another set of zones (30, 33) of the spring is linked to an inner wall of the inner tube, where the external diameter of the latter set of zones is lower than that of the former set of zones of the spring.

Description

DOMAINE TECHNIQUE DE L'INVENTIONTECHNICAL FIELD OF THE INVENTION

L'invention se rapporte au domaine des tringles télescopiques notamment pour supporter des rideaux ou voilages destinés à des ouvertures d'habitats ou encore pour supporter des rideaux dits de douche qui permettent de délimiter et d'étanchéifier l'espace autour d'un élément de projection d'eau formant douche.The invention relates to the field of telescopic rods in particular for supporting curtains or net curtains for habitat openings or to support so-called shower curtains which allow to delimit and seal the space around an element of projection of water forming shower.

Tout élément télescopique destiné à être comprimé entre deux parois sensiblement parallèles entre elles, entre dans le cadre de l'invention.Any telescopic element intended to be compressed between two walls substantially parallel to each other, is within the scope of the invention.

ETAT DE LA TECHNIQUE ANTERIEURESTATE OF THE PRIOR ART

Il existe déjà de nombreuses tringles télescopiques destinées aux usages précités. Ces tringles comprennent généralement deux tubes agencés télescopiquement, le tube intérieur étant pourvu à son extrémité recouverte par le tube extérieur d'un ressort de compression. Ce dernier peut être riveté à une de ses extrémités sur l'extrémité du tube intérieur ; à sa deuxième extrémité, le ressort de compression présente par exemple un crochet en V destiné à s'accrocher de façon coulissante sur la paroi intérieure du tube extérieur. Le ressort de compression présente un seul diamètre extérieur, légèrement inférieur au diamètre intérieur du tube extérieur. Les spires du ressort sont non jointives sauf à ses deux extrémités.There are already many telescopic rods for the aforementioned uses. These rods generally comprise two tubes arranged telescopically, the inner tube being provided at its end covered by the outer tube of a compression spring. The latter may be riveted at one end to the end of the inner tube; at its second end, the compression spring has for example a V-shaped hook for slidably hooking on the inner wall of the outer tube. The compression spring has a single outer diameter, slightly less than the inner diameter of the outer tube. Spring turns are non-contiguous except at both ends.

Ce type de ressort remplit correctement sa fonction à l'intérieur des tubes, à savoir garantir une compression longitudinale qui permet essentiellement de plaquer et de maintenir en compression de telles tringles entre deux parois parallèles entre elles ; avantageusement le placage est obtenu pour une plage de distances inter-parois. L'intérêt principal de ces tringles consiste donc en une adaptabilité à différentes distances inter-parois.This type of spring performs its function properly inside the tubes, namely to ensure longitudinal compression which essentially allows to press and maintain in compression such rods between two walls parallel to each other; advantageously, the plating is obtained for an inter-wall distance range. The main interest of these rods is therefore adaptability to different inter-wall distances.

Cependant le ressort qui définit essentiellement la plage de valeurs dans laquelle la tringle est opérationnelle, ne permet qu'une course restreinte si l'on reste dans des valeurs de compression raisonnables ; « raisonnables » signifie sans nécessiter d'effort trop important de la part du manipulateur qui met en place la tringle.However the spring which essentially defines the range of values in which the rod is operational, allows only a restricted stroke if one remains in reasonable compression values; "Reasonable" means without requiring too much effort on the part of the manipulator who sets up the rod.

Un compromis doit donc être trouvé entre la course du tube interne dans le tube externe, qui définit l'intervalle dans lequel la tringle est opérationnelle, et l'effort de compression exercé.A compromise must therefore be found between the stroke of the inner tube in the outer tube, which defines the interval in which the rod is operational, and the compression force exerted.

EXPOSE DE L'INVENTIONSUMMARY OF THE INVENTION

L'invention vise à remédier aux inconvénients de l'état de la technique et notamment à proposer une tringle télescopique pourvue d'une course de compression plus importante que celles de l'art antérieur, toutes choses égales par ailleurs.The invention aims to overcome the disadvantages of the state of the art and in particular to provide a telescopic rod provided with a compression stroke greater than those of the prior art, all things being equal.

Par 'tringle télescopique' on entend tout élément télescopique structurellement équivalent. Des domaines d'application variés peuvent donc entrer dans le cadre de l'invention.'Telescopic rod' means any structurally equivalent telescopic element. Various fields of application may therefore come within the scope of the invention.

Ainsi, on propose une tringle télescopique comprenant un premier tube dit extérieur coaxial avec un deuxième tube dit intérieur, un élément élastique de compression de type ressort monté à l'intérieur desdits tubes de telle façon que la première extrémité du ressort comprend des spires jointives et est en contact glissant dans un sens de coulissement du premier tube vis-à-vis du deuxième tube et en contact bloquant dans l'autre sens de coulissement ; la deuxième extrémité du ressort comprend des spires jointives et est liée à la paroi intérieure du deuxième tube.Thus, there is provided a telescopic rod comprising a first so-called coaxial outer tube with a second so-called inner tube, a spring-type elastic compression element mounted inside said tubes in such a way that the first end of the spring comprises contiguous turns and is in sliding contact in a sliding direction of the first tube vis-à-vis the second tube and in blocking contact in the other direction of sliding; the second end of the spring comprises contiguous turns and is connected to the inner wall of the second tube.

Selon un premier aspect de l'invention, ledit ressort comprend une première zone ayant un premier diamètre extérieur et une deuxième zone présentant un deuxième diamètre extérieur inférieur au premier diamètre extérieur.According to a first aspect of the invention, said spring comprises a first zone having a first outer diameter and a second zone having a second outer diameter smaller than the first outer diameter.

Préférentiellement la deuxième zone dudit ressort est liée audit deuxième tube à une distance -d- de son extrémité de laquelle il dépasse, ladite distance - d- étant comprise entre 6% et 90% de la longueur totale dudit deuxième tube.Preferably, the second zone of said spring is connected to said second tube at a distance from its end from which it exceeds, said distance - d being between 6% and 90% of the total length of said second tube.

La liaison préférée consiste en un poinçonnage réalisé sur le deuxième tube. Toute autre liaison mécanique ou chimique ou autre, techniquement équivalente, entre dans le cadre de l'invention.The preferred link consists of a punching made on the second tube. Any other mechanical or chemical or other, technically equivalent, connection is within the scope of the invention.

Plus précisément, les spires jointives constitutives de l'extrémité de la deuxième zone du ressort s'étendent entre 1 % et 10% de la longueur totale du ressort au repos.More precisely, the contiguous turns constituting the end of the second zone of the spring extend between 1% and 10% of the total length of the spring at rest.

En outre ladite deuxième zone du ressort est fixée dans le deuxième tube de telle sorte que plus de 50% de la longueur de la dite deuxième zone est recouverte par ledit deuxième tube.In addition, said second zone of the spring is fixed in the second tube so that more than 50% of the length of said second zone is covered by said second tube.

Préférentiellement, le ratio du diamètre extérieur de la deuxième zone du ressort sur le diamètre extérieur de la première zone du ressort est compris entre 0.6 et 0.9, de préférence de l'ordre de 0.8.Preferably, the ratio of the outer diameter of the second zone of the spring to the outer diameter of the first zone of the spring is between 0.6 and 0.9, preferably of the order of 0.8.

Selon un mode de réalisation de l'invention, au repos la longueur axiale de la première zone est sensiblement égale à la longueur axiale de la deuxième zone.According to one embodiment of the invention, at rest the axial length of the first zone is substantially equal to the axial length of the second zone.

Avantageusement, les spires jointives constitutives de l'extrémité de la première zone du ressort s'étendent sur une longueur comprise entre environ 1 % à environ 10% de la longueur totale du ressort.Advantageously, the contiguous turns constituting the end of the first zone of the spring extend over a length of between about 1% to about 10% of the total length of the spring.

BREVE DESCRIPTION DES FIGURESBRIEF DESCRIPTION OF THE FIGURES

D'autres caractéristiques et avantages de l'invention ressortiront à la lecture de la description qui suit, en référence aux figures annexées, qui illustrent :

  • la figure 1, une vue de coupe d'une tringle selon l'art antérieur, le ressort étant au repos ;
  • la figure 2, une vue de coupe d'une tringle selon l'art antérieur, le ressort étant comprimé ;
  • la figure 3, une vue de coupe d'une tringle selon l'invention, le ressort étant au repos ; et
  • la figure 4, une vue de coupe d'une tringle selon l'invention, le ressort étant comprimé.
Other characteristics and advantages of the invention will emerge on reading the description which follows, with reference to the appended figures, which illustrate:
  • the figure 1 a sectional view of a rod according to the prior art, the spring being at rest;
  • the figure 2 , a sectional view of a rod according to the prior art, the spring being compressed;
  • the figure 3 , a sectional view of a rod according to the invention, the spring being at rest; and
  • the figure 4 , a sectional view of a rod according to the invention, the spring being compressed.

Pour plus de clarté, les éléments identiques ou similaires sont repérés par des signes de référence identiques sur l'ensemble des figures.For the sake of clarity, identical or similar elements are marked with identical reference signs throughout the figures.

DESCRIPTION DETAILLEE D'UN MODE DE REALISATIONDETAILED DESCRIPTION OF AN EMBODIMENT

Les figures 1 et 2 montrent donc une tringle connue qui comprend un premier tube 1, dit extérieur, disposé coaxialement et télescopiquement avec un deuxième tube 2 dit intérieur. Un élément élastique de compression 3 de type ressort est monté à l'intérieur des tubes, plus précisément cet élément est fixé par une extrémité à l'intérieur du tube intérieur 2, tandis que sa deuxième extrémité, est libre et dépasse du tube intérieur 2 ; plus exactement l'extrémité dépassante du ressort 3 est recouverte et logée à l'intérieur du premier tube 1 ; elle se termine par un crochet 4 en contact frottant avec la paroi interne du tube extérieur 1. Le contact est tel que l'on crée un glissement dans un premier sens de coulissement du tube intérieur 2 vis-à-vis du tube extérieur 1, et un coincement dans l'autre sens de coulissement.The Figures 1 and 2 therefore show a known rod which comprises a first tube 1, said outside, arranged coaxially and telescopically with a second tube 2 said inside. A resilient compression element 3 of the spring type is mounted inside the tubes, more precisely this element is fixed by one end inside the inner tube 2, while its second end is free and protrudes from the inner tube 2 ; more exactly the protruding end of the spring 3 is covered and housed inside the first tube 1; it ends with a hook 4 in rubbing contact with the inner wall of the outer tube 1. The contact is such that it creates a sliding in a first direction of sliding of the inner tube 2 vis-à-vis the outer tube 1, and a jam in the other direction of sliding.

Un ou plusieurs poinçonnages d'arrêt 5 peuvent constituer la liaison mécanique entre l'extrémité du ressort 3 et l'extrémité du tube intérieur 2.One or more stoppings 5 may constitute the mechanical connection between the end of the spring 3 and the end of the inner tube 2.

Comme on le voit sur les figures 1 et 2, le ressort 3 présente des spires jointives sur sa zone 30 d'extrémité fixée à l'intérieur du tube intérieur 2. Ceci permet de bien assurer la liaison par poinçonnage. Dans cette zone 30 le diamètre extérieur du ressort 3 est inférieur à celui du reste du ressort. Ce diamètre est choisi sensiblement égal à celui du diamètre intérieur du tube intérieur ; une liaison à frottement est avantageusement préférée.As we see on the Figures 1 and 2 the spring 3 has contiguous turns on its end zone 30 fixed inside the inner tube 2. This makes it possible to ensure the connection by punching. In this area 30 the outer diameter of the spring 3 is less than that of the rest of the spring. This diameter is chosen substantially equal to that of the inner diameter of the inner tube; a frictional connection is advantageously preferred.

La figure 2 montre la tringle à l'état comprimé. On voit qu'une course de compression C1 est réalisée ; elle est égale au produit de la distance inter-spires (au repos) par le nombre de spires.The figure 2 shows the rod in the compressed state. It can be seen that a compression stroke C1 is produced; it is equal to the product of the inter-turn distance (at rest) by the number of turns.

Les figures 3 et 4 correspondent à une tringle selon l'invention. Ces figures montrent volontairement une tringle de mêmes dimensions que celle schématisée sur les figures 1 et 2, afin de mettre en évidence les différences.The Figures 3 and 4 correspond to a rod according to the invention. These figures voluntarily show a rod of the same dimensions as that schematized on the Figures 1 and 2 , in order to highlight the differences.

La figure 3 montre une tringle non comprimée tandis que la figure 4 montre la même tringle à l'état comprimé. Entre ces deux états, la course de compression C2 est plus importante que dans l'art antérieur, toutes choses égales par ailleurs.The figure 3 shows an uncompressed rod while the figure 4 shows the same rod in the compressed state. Between these two states, the compression stroke C2 is greater than in the prior art, all things being equal.

Au plan structurel, la tringle selon l'invention diffère de celle qui vient d'être décrite par le ressort 3 : plus précisément l'une des extrémités de ce ressort 3 présente en outre une zone 33 axialement intercalée entre la zone d'extrémité à spires fermées 30 et la zone 31 à spires non jointives et de diamètre plus important que les zones 30 et 31. La zone 33 présente donc un diamètre extérieur constant et égal à celui de la zone 30 c'est-à-dire inférieur à celui des zones 31 et 32. La zone 33 s'ajoutant aux autres zones, la longueur totale du ressort est supérieure à celle d'un ressort connu. Par ailleurs et comme le montre la figure 3, à l'état non comprimé, la zone 33 s'étend à la fois à l'intérieur du tube intérieur 2 et au-delà de son extrémité recouverte par le tube extérieur 1.Structurally, the rod according to the invention differs from that just described by the spring 3: more precisely one of the ends of this spring 3 further has a zone 33 axially interposed between the end zone to closed turns 30 and the zone 31 with non-contiguous turns and greater in diameter than the zones 30 and 31. The zone 33 thus has a constant outside diameter and equal to that of the zone 30, that is to say less than that zones 31 and 32. The zone 33 being added to the other zones, the total length of the spring is greater than that of a known spring. Moreover, as shown in figure 3 in the uncompressed state, the zone 33 extends both inside the inner tube 2 and beyond its end covered by the outer tube 1.

Lors de la compression axiale de la tringle, le ressort 3 est comprimé jusqu'à une position telle que représentée sur la figure 4, soit avec toutes ses spires jointives. On obtient ainsi une course C2 supérieure à la course C1 obtenue selon l'art antérieur.During the axial compression of the rod, the spring 3 is compressed to a position as shown in FIG. figure 4 , with all its adjoining turns. This gives a stroke C2 greater than the stroke C1 obtained according to the prior art.

Ainsi le fait de disposer la zone 33 au moins partiellement à l'intérieur du tube intérieur 2, permet de le comprimer partiellement à cet endroit et d'obtenir de ce fait une course C2 plus importante que selon l'art antérieur. En fait la valeur de la course C2 est en partie et également déterminée par la position du poinçonnage 5. Une valeur maximale de course est obtenue lorsque la zone 33 est entièrement comprimée à l'intérieur du tube de petit diamètre. Dans ce cas, le poinçonnage 5 est situé près de l'extrémité du tube intérieur 2 non recouverte par le tube extérieur 1.Thus arranging the zone 33 at least partially inside the inner tube 2 makes it possible to partially compress it at this point and thereby obtain a larger stroke C2 than in the prior art. In fact the value of the stroke C2 is partly and also determined by the position of the punching 5. A maximum stroke value is obtained when the zone 33 is fully compressed inside the small diameter tube. In this case, the punching 5 is located near the end of the inner tube 2 not covered by the outer tube 1.

A titre illustratif et comparatif, les zones 30 et 33 présentent un diamètre extérieur de 6.4 mm tandis les zones 31 et 32 ont un diamètre de 7.7 mm. Un ratio diamètre intérieur sur diamètre extérieur d'environ 0.8 est donc obtenu. Ce ratio peut varier entre 0.7 et 0.9. Le tube extérieur 1 présente un diamètre extérieur d'environ 9 mm et un diamètre intérieur d'environ 8.2 mm. Le tube intérieur 2 présente un diamètre extérieur d'environ 7.5 mm et un diamètre intérieur d'environ 6.7 mm.By way of illustration and comparison, zones 30 and 33 have an outside diameter of 6.4 mm while zones 31 and 32 have a diameter of 7.7 mm. A ratio inner diameter to outer diameter of about 0.8 is therefore obtained. This ratio can vary between 0.7 and 0.9. The outer tube 1 has an outside diameter of about 9 mm and an inside diameter of about 8.2 mm. The inner tube 2 has an outside diameter of about 7.5 mm and an inside diameter of about 6.7 mm.

La longueur d'un ressort 3 selon les figures 1 et 2 est de l'ordre de 82 mm au repos tandis que la longueur au repos d'un ressort selon les figures 3 et 4 (l'invention) est de l'ordre de 150 mm.The length of a spring 3 according to Figures 1 and 2 is of the order of 82 mm at rest while the rest length of a spring according to the Figures 3 and 4 (The invention) is of the order of 150 mm.

Par ailleurs le poinçonnage 5 est généralement réalisé à environ 1 cm de l'extrémité du tube intérieur 2 recouverte par le tube extérieur 1. Selon l'invention on choisit de pratiquer un poinçonnage 5 à environ 4 cm de cette même extrémité. C'est ce qui est qualifié de ' certaine ' distance dans ce texte.Moreover, the punching 5 is generally made about 1 cm from the end of the inner tube 2 covered by the outer tube 1. According to the invention, it is chosen to punch about 5 cm from this same end. This is what is called 'certain' distance in this text.

De façon intéressante, la zone 33 est recouverte par le deuxième tube 2 sur plus de la moitié de sa longueur. Cette caractéristique, associée au positionnement du poinçonnage 5, permet aux spires initialement non jointives de se comprimer à l'intérieur du tube intérieur 2.Interestingly, the zone 33 is covered by the second tube 2 over more than half of its length. This characteristic, associated with the positioning of the punching 5, allows the initially non-contiguous turns to compress within the inner tube 2.

A titre illustratif, avec un tel dimensionnement, la course C1 est de l'ordre de 15 mm. Selon l'invention, la course C2 est de l'ordre de 25 mm. Le gain est non négligeage et assure une plus grande latitude pour le réglage de la tringle. Cet avantage considérable est obtenu d'une façon simple et peu coûteuse.As an illustration, with such a dimensioning, the stroke C1 is of the order of 15 mm. According to the invention, the stroke C2 is of the order of 25 mm. The gain is not neglected and provides greater latitude for adjusting the rod. This considerable advantage is obtained in a simple and inexpensive way.

Les tubes 1 et 2 peuvent être réalisés en un matériau tel que de l'acier.The tubes 1 and 2 may be made of a material such as steel.

Le ressort 3 est préférentiellement constitué en tout métal approprié.The spring 3 is preferably made of any suitable metal.

Ainsi selon une application de l'invention, des ouvertures de fenêtres (par exemple) de largeurs comprises entre 40 et 65 cm peuvent être équipées avec de telles tringles. Avec d'autres dimensions du ressort 3, des ouvertures de 25 à 40 cm, ou encore de 65 à 110cm peuvent être équipées avec de telles tringles.Thus, according to one application of the invention, window openings (for example) of widths between 40 and 65 cm can be equipped with such rods. With other dimensions of the spring 3, openings 25 to 40 cm, or 65 to 110 cm can be equipped with such rods.

L'homme de métier choisira les dimensions adaptées à son cas de figure, tout en respectant les caractéristiques de l'invention.The skilled person will choose the dimensions adapted to his case, while respecting the features of the invention.

Claims (7)

Tringle télescopique comprenant un premier tube (1) dit extérieur coaxial et télescopique avec un deuxième tube (2) dit intérieur, un élément élastique de compression (3) de type ressort monté à l'intérieur desdits tubes de telle façon que la première extrémité du ressort comprend des spires jointives (32) et un élément (4) en contact glissant dans un sens de coulissement du premier tube (1) vis-à-vis du deuxième tube (2) et en contact bloquant dans l'autre sens de coulissement, la deuxième extrémité (30) du ressort comprend des spires jointives et est liée à la paroi intérieure du deuxième tube (2) caractérisée en ce que ledit ressort comprend une première zone (31, 32) ayant un premier diamètre extérieur et une deuxième zone (30, 33) présentant un deuxième diamètre extérieur inférieur au premier diamètre extérieur.Telescopic rod comprising a first tube (1) said outer coaxial and telescopic with a second tube (2) said inner, a spring-like elastic compression element (3) mounted inside said tubes so that the first end of spring comprises contiguous turns (32) and an element (4) in sliding contact in a sliding direction of the first tube (1) vis-à-vis the second tube (2) and in blocking contact in the other direction of sliding the second end (30) of the spring comprises contiguous turns and is connected to the inner wall of the second tube (2) characterized in that said spring comprises a first zone (31, 32) having a first outer diameter and a second zone (30, 33) having a second outer diameter smaller than the first outer diameter. Tringle télescopique selon la revendication 1 caractérisée en ce que la deuxième zone (30) dudit ressort est liée audit deuxième tube (2) à une distance -d- de son extrémité de laquelle il dépasse, ladite distance -d-étant comprise entre 6% et 90% de la longueur totale dudit deuxième tube (2).Telescopic rod according to claim 1 characterized in that the second zone (30) of said spring is connected to said second tube (2) at a distance -d- from its end from which it exceeds, said distance -d-being between 6% and 90% of the total length of said second tube (2). Tringle selon l'une quelconque des revendications précédentes caractérisée en ce que les spires jointives (30) constitutives de l'extrémité de la deuxième zone du ressort s'étendent entre 1% et 10% de la longueur totale du ressort au repos.Rod according to any one of the preceding claims, characterized in that the contiguous turns (30) constituting the end of the second zone of the spring extend between 1% and 10% of the total length of the spring at rest. Tringle selon l'une quelconque des revendications précédentes caractérisée en ce que ladite deuxième zone (30,33) du ressort est fixée dans le deuxième tube (2) de telle sorte que plus de 50% de la longueur de la dite deuxième zone est recouverte par ledit deuxième tube.Rod according to any one of the preceding claims characterized in that said second zone (30,33) of the spring is fixed in the second tube (2) so that more than 50% of the length of said second zone is covered by said second tube. Tringle selon l'une quelconque des revendications précédentes caractérisée en ce que le ratio du diamètre extérieur de la deuxième zone (30, 33) du ressort sur le diamètre extérieur de la première zone (31, 32) du ressort est compris entre 0.6 et 0.9, de préférence de l'ordre de 0.8.Rod according to any one of the preceding claims characterized in that the ratio of the outer diameter of the second zone (30, 33) of the spring to the outer diameter of the first zone (31, 32) of the spring is between 0.6 and 0.9 , preferably of the order of 0.8. Tringle selon l'une quelconque des revendications précédentes caractérisée en ce que la longueur axiale au repos de la première zone (31, 32) est sensiblement égale à la longueur axiale de la deuxième zone (30, 33).Rod according to any one of the preceding claims characterized in that the axial length at rest of the first zone (31, 32) is substantially equal to the axial length of the second zone (30, 33). Tringle selon l'une quelconque des revendications précédentes caractérisée en ce que les spires jointives constitutives de l'extrémité de la première zone du ressort s'étendent sur une longueur comprise entre environ 1 % à environ 10% de la longueur totale du ressort.Rod according to any one of the preceding claims, characterized in that the contiguous turns constituting the end of the first zone of the spring extend over a length of between approximately 1% and approximately 10% of the total length of the spring.
EP13305407.2A 2013-03-29 2013-03-29 Improved telescopic rod with spring Withdrawn EP2783606A1 (en)

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EP13305407.2A EP2783606A1 (en) 2013-03-29 2013-03-29 Improved telescopic rod with spring

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021089061A1 (en) * 2019-11-07 2021-05-14 宁波利洋新材料股份有限公司 Mounting rod assembly used for mounting curtain

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH427419A (en) * 1965-09-28 1966-12-31 Mann Guenther Spring device with two telescopically arranged parts
DE2611219A1 (en) * 1976-03-17 1977-09-29 Klever Geb Klein Erna Spring loaded telescopic strut - has straight projection from end coil of spring to form locking element
CH625601A5 (en) * 1978-01-11 1981-09-30 Spirella Ag Longitudinally adjustable construction element
DE3336928A1 (en) * 1983-10-11 1985-04-25 Klever GmbH & Co KG, 5632 Wermelskirchen Extensible support rod
EP2272404A2 (en) * 2009-06-12 2011-01-12 Home Connexion S.r.l. A spring device for a support rod, in particular for curtains

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH427419A (en) * 1965-09-28 1966-12-31 Mann Guenther Spring device with two telescopically arranged parts
DE2611219A1 (en) * 1976-03-17 1977-09-29 Klever Geb Klein Erna Spring loaded telescopic strut - has straight projection from end coil of spring to form locking element
CH625601A5 (en) * 1978-01-11 1981-09-30 Spirella Ag Longitudinally adjustable construction element
DE3336928A1 (en) * 1983-10-11 1985-04-25 Klever GmbH & Co KG, 5632 Wermelskirchen Extensible support rod
EP2272404A2 (en) * 2009-06-12 2011-01-12 Home Connexion S.r.l. A spring device for a support rod, in particular for curtains

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021089061A1 (en) * 2019-11-07 2021-05-14 宁波利洋新材料股份有限公司 Mounting rod assembly used for mounting curtain

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