EP0327474A1 - Edging strip and method of making it - Google Patents

Edging strip and method of making it Download PDF

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Publication number
EP0327474A1
EP0327474A1 EP89420025A EP89420025A EP0327474A1 EP 0327474 A1 EP0327474 A1 EP 0327474A1 EP 89420025 A EP89420025 A EP 89420025A EP 89420025 A EP89420025 A EP 89420025A EP 0327474 A1 EP0327474 A1 EP 0327474A1
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EP
European Patent Office
Prior art keywords
threshold
base
metal strip
folding
intended
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EP89420025A
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German (de)
French (fr)
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EP0327474B1 (en
Inventor
Michel Grosjean
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Individual
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Individual
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Priority to AT89420025T priority Critical patent/ATE80984T1/en
Publication of EP0327474A1 publication Critical patent/EP0327474A1/en
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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47G—HOUSEHOLD OR TABLE EQUIPMENT
    • A47G27/00—Floor fabrics; Fastenings therefor
    • A47G27/04—Carpet fasteners; Carpet-expanding devices ; Laying carpeting; Tools therefor
    • A47G27/0437—Laying carpeting, e.g. wall-to-wall carpeting
    • A47G27/045—Gripper strips; Seaming strips; Edge retainers

Definitions

  • the present invention relates to threshold bars.
  • the threshold bars are elements fixed to the floor of residential or office premises, at the junction of two different floor coverings. It relates more particularly to threshold bars used between a "soft” covering (of the carpet type) and a “hard” covering (tile, parquet).
  • a threshold bar is of both functional and aesthetic interest. It provides protection for the edges of adjacent floor coverings and masks their irregularities while constituting a clean and straight line of separation.
  • the simplest and most generally used threshold bars consist of a slightly curved metal strip provided with regularly spaced holes allowing the passage of screws for fixing to the ground. Since the bar is curved, the installer must avoid making a tight screw which would cause it to flatten. The screwing must therefore be carried out in moderation and the screw head is raised above the ground by the thickness of the threshold bar. Such an assembly does not withstand long a frequent passage of people and, sooner or later, the threshold bar starts to move and the screws come undone.
  • improved threshold comprising a flat part forming a base, intended to be fixed to the ground, for example by gluing or using screws, being at least partially slid under the soft covering, and a curved part forming the threshold, linked to the base by one of its edges and intended to be folded over the base after fixing it to the ground.
  • the threshold makes an acute angle with the base close to the right angle. The operator can thus screw the base to the ground by fully tightening or gluing the base to the ground, then bring the edge of the soft floor covering above the base and then exert strong pressure on the threshold to apply it over the edge of the soft floor covering.
  • the threshold drawdown it causes an inelastic deformation at its connection with the base so that the threshold then remains in the folded position.
  • Such a threshold bar comprising a folding threshold has the advantage of rapid installation, efficient fixing and also has an aesthetic advantage because the screws are concealed.
  • a device has the major drawback of being expensive. Indeed, to be able to fold down the threshold by causing an inelastic deformation at its connection with the base without however causing deformation at the same level of the threshold, it is necessary that the threshold has a greater rigidity than the rest of the structure .
  • the threshold bar thus has a section of variable thickness: a large thickness at the threshold level and a small thickness at the base as well as at the part connecting the base to the threshold. The only process known to date for producing such parts is the passage through a die.
  • the threshold bars in extruded profiles cannot be covered with a decorative material whose bonding on the curved part of the threshold would be practically impossible or, in any case, much too expensive. Furthermore, the conditions necessary for spinning make the minimum thickness remain large (at least 1 millimeter), which increases the cost of material used and gives the threshold bar too large a total thickness.
  • the invention proposes a new threshold bar structure which overcomes the drawbacks mentioned above.
  • the invention relates to a threshold bar comprising a flat part forming a base intended to be fixed to the ground and a curved part forming a threshold intended to be folded down on the base after fixing it to the ground.
  • the threshold bar is produced from a single metal strip, the threshold consists of two thicknesses joined to the metal strip, and the base consists of a single thickness of the strip metallic.
  • the metal strip consists of a ferrous alloy.
  • the metal strip is previously coated on one of its faces with a thin decorative material so that, after the threshold bar has been made, the thin material is located on the outer surface of the threshold. .
  • the invention relates to the method of producing such a threshold bar which comprises the following steps: the metal strip is continuously scrolled and passes successively through a series of rollers intended to ensure a first longitudinal folding of the metal strip followed by bending of the two thicknesses thus obtained, the base is obtained by a second longitudinal folding located in the vicinity of the lateral edge folded down during the first folding, so that the angle formed by the threshold and the base is acute, that the convex face of the threshold is directed towards the outside and that the lateral edge folded down during the first folding is located inside.
  • a threshold bar manufactured according to the invention may be of very low unit cost, during mass production, because the equipment allowing the continuous bending of a metal strip practically does not wear out and the fact that the materials which can be used for the strip can be very inexpensive while being of excellent mechanical quality, for example steel. Furthermore, the invention makes it possible very easily and economically to produce threshold bars having an appearance other than metallic, due to the possibility of using metal strips initially covered, on one face, with a material. decorative.
  • Figure 1 there is a threshold bar which is made from a single metal strip.
  • the flat part 1 forming the base which is intended to be fixed to the ground has a single strip thickness.
  • Part 2 forming the threshold which is intended to be folded down on the base after fixing it to the ground has two thicknesses of adjoining strip. Holes 3, regularly spaced, are formed in the base 1, to allow its screwing.
  • FIG. 1 a method of fixing the threshold bar according to the invention.
  • Pegs 4 are installed in the ground 5 at the orifices 3 of the threshold bar.
  • the threshold bar having the shape illustrated in FIG. 1 is brought to the ground, the base 1 is applied directly to the ground and is rigidly fixed using screws which are screwed in fully.
  • the end of the floor covering 7, for example a carpet, is applied to the base 1, then the operator exerts a strong pressure on the threshold 2 so as to obtain its folding at level 9 by inelastic deformation of the metal strip to apply it by its end 8 to the floor covering 7.
  • the threshold 2 has a double sheet thickness due to the folding at level 8.
  • the threshold 2 is also slightly curved so that its upper face be convex.
  • the threshold 2 thus has a rigidity greater than that of the line at level 9, which makes it very easy to obtain the folding at level 9 without creating the slightest deformation of the threshold 2. It may be foreseen that claws (not shown) make protrudes from the base to help block the floor covering 7, in the case where it is for example a carpet fitted stretched, and to facilitate installation.
  • FIGS. 3A to 3D represent the various essential stages in the folding of the metal strip in order to constitute the threshold bar according to the invention.
  • This metal strip is scrolled longitudinally by passing it through a train of rollers so as to continuously cause a first longitudinal folding at level 8.
  • the strip width between the fold line at level 8 and the side edge 10 is less than the bandwidth between the same fold line at level 8 and the other side edge 11.
  • the portion of the strip between the fold line at level 8 and the side edge 10 is thus folded flat against the rest of the strip, as shown in Figure 3B.
  • the part of the strip which is thus found in double thickness is then curved longitudinally, as shown in FIG.
  • a second longitudinal folding is carried out at level 9 located in the vicinity of the lateral edge 10 folded down during the first folding.
  • the folding at level 9 is carried out so that the angle formed by the threshold 2 and the base 1 is acute, that the convex threshold face comes out towards the outside and that the folded side edge 10 during the first folding is located inside.
  • the angle formed by the threshold and the base is between approximately 45 ° and 80 °. So that the threshold bar can be screwed to the ground, it suffices, before any folding, to make holes 3 arranged regularly longitudinally inside the zone between the fold line at level 9 and the corresponding lateral edge 11 .
  • the two longitudinal folds made at levels 8 and 9 that the bending of the external part of the threshold 2 is carried out in a direction such that the decorative coating, if any, initially applied to the metal strip is stretched, which does not harm not to its grip.
  • the threshold bar according to the invention may therefore have a decorative coating of great resistance and very economical to produce since it can be glued flat during the manufacture of the metal strip.
  • the coating can present, in particular, the appearance of wood.
  • the present invention is susceptible of numerous variants and modifications.
  • the fixing of the threshold bar was ensured by screwing, it could also be ensured by gluing, the threshold being folded down after gluing of the base and positioning of a carpet on it.
  • the base is not necessarily flat but could, for example, on the side of the folding zone be curved to form a beak directed downward to allow level adjustments when the base is placed on a pad. or that adhesive strips create an extra thickness, or that the extreme zone of the base, on the side of the folding, comes to cover a zone of height different from the zone of fixing of the base, etc.

Landscapes

  • Floor Finish (AREA)
  • Paper (AREA)
  • Heat Treatment Of Articles (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)
  • Golf Clubs (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

The invention relates to edging strips comprising a flat part forming a base (1) intended to be fixed to the floor (5) and a curved part (2) forming an edge intended to be folded back on the base (1) after fixing the latter to the floor. This edge strip is produced from a single metal strip. The edge (2) is constituted from two thicknesses of the metal strip against each other, and the base (1) is constituted from a single thickness of the metal strip. <IMAGE>

Description

La présente invention se rapporte aux barres de seuil. Les barres de seuil sont des éléments fixés sur le sol de locaux d'habitation ou de bureaux, au niveau de la jonction de deux revêtements de sol différents. Elle concerne plus particulièrement des barres de seuil utilisées entre un revêtement "mou" (du type moquette) et un revêtement "dur" (carreau, parquet).The present invention relates to threshold bars. The threshold bars are elements fixed to the floor of residential or office premises, at the junction of two different floor coverings. It relates more particularly to threshold bars used between a "soft" covering (of the carpet type) and a "hard" covering (tile, parquet).

Une barre de seuil présente un intérêt à la fois fonc­tionnel et esthétique. Elle assure une protection des bords des revêtements de sol adjacents et masque leurs irrégularités tout en constituant une ligne de séparation nette et droite.A threshold bar is of both functional and aesthetic interest. It provides protection for the edges of adjacent floor coverings and masks their irregularities while constituting a clean and straight line of separation.

Les barres de seuil les plus simples et les plus généra­lement utilisées sont constituées d'une bande métallique légère­ment bombée et munie de trous régulièrement espacés permettant le passage de vis pour la fixation sur le sol. Puisque la barre est bombée, l'installateur doit éviter d'effecteur un vissage à fond qui provoquerait son aplatissement. Le vissage doit donc être effectué avec modération et la tête de vis est surélevée par rap­port au sol de l'épaisseur de la barre de seuil. Un tel montage ne résiste par longtemps à un passage fréquent des personnes et, tôt ou tard, la barre de seuil se met à bouger et les vis se défont.The simplest and most generally used threshold bars consist of a slightly curved metal strip provided with regularly spaced holes allowing the passage of screws for fixing to the ground. Since the bar is curved, the installer must avoid making a tight screw which would cause it to flatten. The screwing must therefore be carried out in moderation and the screw head is raised above the ground by the thickness of the threshold bar. Such an assembly does not withstand long a frequent passage of people and, sooner or later, the threshold bar starts to move and the screws come undone.

Pour remédier à cet inconvénient et pour rendre l'ensemble plus esthétique, il a déjà été proposé des barres de seuil perfectionnées comprenant une partie plane formant une emba­se, destinée à être fixée au sol, par exemple par collage ou à l'aide de vis, en étant au moins partiellement glissée sous le re­vêtement mou, et une partie bombée formant le seuil, liée à l'embase par l'un de ses bords et destinée à être rabattue sur l'embase après fixation de celle-ci au sol. Avant la pose d'une telle barre de seuil, le seuil fait avec l'embase un angle aigu voisin de l'angle droit. L'opérateur peut ainsi visser l'embase sur le sol en serrant à fond ou coller l'embase sur le sol, amener ensuite le bord du revêtement de sol mou au-dessus de l'embase puis exercer une forte pression sur le seuil pour qu'il vienne s'appliquer au dessus du bord du revêtement de sol mou. Au cours du rabattement de seuil, il se provoque une déformation inélasti­que au niveau de sa liaison avec l'embase de sorte que le seuil reste ensuite en position rabattue.To remedy this drawback and to make the assembly more aesthetic, bars have already been proposed. improved threshold comprising a flat part forming a base, intended to be fixed to the ground, for example by gluing or using screws, being at least partially slid under the soft covering, and a curved part forming the threshold, linked to the base by one of its edges and intended to be folded over the base after fixing it to the ground. Before installing such a threshold bar, the threshold makes an acute angle with the base close to the right angle. The operator can thus screw the base to the ground by fully tightening or gluing the base to the ground, then bring the edge of the soft floor covering above the base and then exert strong pressure on the threshold to apply it over the edge of the soft floor covering. During the threshold drawdown, it causes an inelastic deformation at its connection with the base so that the threshold then remains in the folded position.

Une telle barre de seuil comportant un seuil rabattable présente l'avantage d'une pose rapide, d'une fixation efficace et présente aussi un avantage esthétique du fait que les vis sont masquées. Par contre, un tel dispositif présente l'inconvénient majeur d'être coûteux. En effet, pour pouvoir rabattre le seuil en provoquant une déformation inélastique au niveau de sa liaison avec l'embase sans toutefois provoquer de déformation au niveau même du seuil, il est nécessaire que le seuil présente une plus grande rigidité que le reste de la structure. La barre de seuil présente ainsi une section d'épaisseur variable : une forte épais­seur au niveau de seuil et une faible épaisseur au niveau de l'embase ainsi qu'au niveau de la partie reliant l'embase au seuil. Le seul procédé connu à ce jour pour réaliser de telles pièces réside dans le passage en filière.Such a threshold bar comprising a folding threshold has the advantage of rapid installation, efficient fixing and also has an aesthetic advantage because the screws are concealed. On the other hand, such a device has the major drawback of being expensive. Indeed, to be able to fold down the threshold by causing an inelastic deformation at its connection with the base without however causing deformation at the same level of the threshold, it is necessary that the threshold has a greater rigidity than the rest of the structure . The threshold bar thus has a section of variable thickness: a large thickness at the threshold level and a small thickness at the base as well as at the part connecting the base to the threshold. The only process known to date for producing such parts is the passage through a die.

La réalisation de profilés par étirage à travers une fi­lière permet de réaliser pratiquement n'importe quelle forme de section. Cependant, un tel procédé ne permet pas d'obtenir des produits bon marché parce qu'il impose d'utiliser certains métaux particuliers qui se limitent presque exclusivement à l'aluminium, certains alliages d'aluminium, ou le laiton. Ces métaux ou allia­ges sont nettement plus chers que la plupart des métaux ferreux et sont par ailleurs moins durs, moins résistants à l'usure et plus facilement rayables.The production of profiles by drawing through a die makes it possible to produce practically any shape of section. However, such a process does not make it possible to obtain inexpensive products because it requires the use of certain metals. individuals who are almost exclusively limited to aluminum, certain aluminum alloys, or brass. These metals or alloys are significantly more expensive than most ferrous metals and are also less hard, less resistant to wear and more easily scratched.

Les barres de seuil en profilés extrudés ne peuvent pas être recouvertes d'un matériau décoratif dont le collage sur la partie bombée du seuil serait pratiquement impossible ou, en tout cas, beaucoup trop cher. Par ailleurs, les conditions nécessaires au filage font que l'épaisseur minimale reste importante (au moins 1 millimètre), ce que augmente le coût de matière utilisée et confère à la barre de seuil une épaisseur totale trop importante.The threshold bars in extruded profiles cannot be covered with a decorative material whose bonding on the curved part of the threshold would be practically impossible or, in any case, much too expensive. Furthermore, the conditions necessary for spinning make the minimum thickness remain large (at least 1 millimeter), which increases the cost of material used and gives the threshold bar too large a total thickness.

L'invention propose une structure nouvelle de barre de seuil qui permet de remédier aux inconvénients précédemment cités.The invention proposes a new threshold bar structure which overcomes the drawbacks mentioned above.

L'invention se rapporte à une barre de seuil comprenant une partie plane formant embase destinée à être fixée au sol et une partie bombée formant seuil destinée à être rabattue sur l'embase après fixation de celle-ci au sol.The invention relates to a threshold bar comprising a flat part forming a base intended to be fixed to the ground and a curved part forming a threshold intended to be folded down on the base after fixing it to the ground.

Selon une caractéristique de l'invention, la barre de seuil est réalisée à partir d'une seule bande métallique, le seuil est constitué de deux épaisseurs accolées de la bande métallique, et l'embase est constituée d'une simple épaisseur de la bande métallique.According to a characteristic of the invention, the threshold bar is produced from a single metal strip, the threshold consists of two thicknesses joined to the metal strip, and the base consists of a single thickness of the strip metallic.

Selon une autre caractéristique de l'invention, la bande métallique est constituée d'un alliage ferreux.According to another characteristic of the invention, the metal strip consists of a ferrous alloy.

Selon une autre caractéristique de l'invention, la bande métallique est préalablement revêtue sur l'une de ses faces d'un matériau décoratif mince de sorte qu'après réalisation de la barre de seuil le matériau mince soit situé sur la surface extérieure du seuil.According to another characteristic of the invention, the metal strip is previously coated on one of its faces with a thin decorative material so that, after the threshold bar has been made, the thin material is located on the outer surface of the threshold. .

L'invention concerne le procédé de réalisation d'une telle barre de seuil qui comprend les étapes suivantes : la bande métallique est défilée en continu et passe successivement dans une série de galets destinés à assurer un premier pliage longitudinal de la bande métallique suivi d'un bombage des deux épaisseurs ain­si obtenues, l'embase est obtenue par un second pliage longitudi­nal situé au voisinage du bord latéral rabattu lors du premier pliage, de façon que l'angle formé par le seuil et l'embase soit aigu, que la face convexe du seuil soit dirigée vers l'extérieur et que le bord latéral rabattu lors du premier pliage soit situé à l'intérieur.The invention relates to the method of producing such a threshold bar which comprises the following steps: the metal strip is continuously scrolled and passes successively through a series of rollers intended to ensure a first longitudinal folding of the metal strip followed by bending of the two thicknesses thus obtained, the base is obtained by a second longitudinal folding located in the vicinity of the lateral edge folded down during the first folding, so that the angle formed by the threshold and the base is acute, that the convex face of the threshold is directed towards the outside and that the lateral edge folded down during the first folding is located inside.

Une barre de seuil fabriquée selon l'invention pourra être d'un coût unitaire très faible, lors d'une production en grande série, du fait que les équipements permettant le pliage en continu d'une bande métallique ne s'usent pratiquement pas et du fait que les matériaux que l'on peut utiliser pour la bande peu­vent être très bon marché tout en étant d'excellente qualité méca­nique, par exemple de l'acier. Par ailleurs, l'invention permet de réaliser d'une façon très facile et économique des barres de seuil présentant un aspect autre que métallique, du fait de la possibi­lité d'utiliser des bandes métalliques recouvertes initialement, sur une face, d'un matériau décoratif.A threshold bar manufactured according to the invention may be of very low unit cost, during mass production, because the equipment allowing the continuous bending of a metal strip practically does not wear out and the fact that the materials which can be used for the strip can be very inexpensive while being of excellent mechanical quality, for example steel. Furthermore, the invention makes it possible very easily and economically to produce threshold bars having an appearance other than metallic, due to the possibility of using metal strips initially covered, on one face, with a material. decorative.

D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description détaillée suivante d'un exemple de réalisation faite en relation avec les figures jointes parmi lesquelles :

  • la figure 1 représente, en coupe, une barre de seuil selon l'invention ;
  • la figure 2 représente en coupe, la même barre de seuil après montage ; et
  • les figures 3A à 3D illustrent, en coupe, les différentes étapes de réalisation d'une barre de seuil selon l'invention.
Other characteristics and advantages of the invention will appear on reading the following detailed description of an exemplary embodiment made in connection with the attached figures, among which:
  • Figure 1 shows, in section, a threshold bar according to the invention;
  • 2 shows in section, the same threshold bar after assembly; and
  • FIGS. 3A to 3D illustrate, in section, the various stages in the production of a threshold bar according to the invention.

Sur la figure 1 on distingue une barre de seuil qui est réalisée à partir d'une seule bande métallique. La partie plane 1 formant l'embase qui est destinée à être fixée sur le sol présente une seule épaisseur de bande. La partie 2 formant le seuil qui est destiné à être rabattu sur l'embase après fixation de celle-ci au sol présente deux épaisseurs de bande accolées. Des orifices 3, régulièrement espacés, sont ménagés dans l'embase 1, pour per­mettre son vissage.In Figure 1 there is a threshold bar which is made from a single metal strip. The flat part 1 forming the base which is intended to be fixed to the ground has a single strip thickness. Part 2 forming the threshold which is intended to be folded down on the base after fixing it to the ground has two thicknesses of adjoining strip. Holes 3, regularly spaced, are formed in the base 1, to allow its screwing.

On voit sur la figure 2 un mode de fixation de la barre de seuil conforme à l'invention. Des chevilles 4 sont installées dans le sol 5 au niveau des orifices 3 de la barre de seuil. La barre des seuil présentant la forme illustrée en figure 1 est amenée sur le sol, l'embase 1 est appliquée directement sur le sol et est fixée rigidement à l'aide de vis vissées à fond. L'extré­mité de revêtement de sol 7, par exemple une moquette, est appli­quée sur l'embase 1, puis l'opérateur exerce une forte pression sur le seuil 2 de façon à obtenir son pliage au niveau 9 par dé­formation inélastique de la bande métallique pour venir l'appli­quer par son extrémité 8 sur le revêtement de sol 7. On voit que le seuil 2 présente une double épaisseur de tôle du fait du pliage au niveau 8. Le seuil 2 est en outre légèrement bombé de façon que sa face supérieure soit convexe. Le seuil 2 présente ainsi une ri­gidité supérieure à celle de la ligne au niveau 9, ce qui permet d'obtenir très facilement le pliage au niveau 9 sans créer la moindre déformation du seuil 2. On pourra prévoir que des griffes (non représentées) font saille à partir de l'embase pour aider au blocage du revêtement de sol 7, dans le cas où il s'agit par exem­ple d'une moquette montée tendue, et pour faciliter la pose.We see in Figure 2 a method of fixing the threshold bar according to the invention. Pegs 4 are installed in the ground 5 at the orifices 3 of the threshold bar. The threshold bar having the shape illustrated in FIG. 1 is brought to the ground, the base 1 is applied directly to the ground and is rigidly fixed using screws which are screwed in fully. The end of the floor covering 7, for example a carpet, is applied to the base 1, then the operator exerts a strong pressure on the threshold 2 so as to obtain its folding at level 9 by inelastic deformation of the metal strip to apply it by its end 8 to the floor covering 7. We see that the threshold 2 has a double sheet thickness due to the folding at level 8. The threshold 2 is also slightly curved so that its upper face be convex. The threshold 2 thus has a rigidity greater than that of the line at level 9, which makes it very easy to obtain the folding at level 9 without creating the slightest deformation of the threshold 2. It may be foreseen that claws (not shown) make protrudes from the base to help block the floor covering 7, in the case where it is for example a carpet fitted stretched, and to facilitate installation.

Les figures 3A à 3D représentent les différentes étapes essentielles du pliage de la bande métallique en vue de constituer la barre de seuil conforme à l'invention. On part d'une bande métallique de largeur constante, comme représentée figure 3A. On fait défiler cette bande métallique longitudinalement en la faisant passer à travers un train de galets de façon à provoquer en continu un premier pliage longitudinal au niveau 8. La largeur de bande comprise entre la ligne de pliage au niveau 8 et le bord latéral 10 est inférieure à la largeur de bande comprise entre la même ligne de pliage au niveau 8 et l'autre bord latéral 11. La partie de la bande comprise entre la ligne de pliage au niveau 8 et le bord latéral 10 est ainsi rabattue à plat contre le reste de la bande, comme cela est représenté en figure 3B. La partie de la bande qui se retrouve ainsi en double épaisseur est ensuite incur­vée longitudinalement, comme cela est représenté en figure 3C, de telle sorte que la partie de la bande rabattue se retrouve sur le côté concave. Ensuite, comme cela est représenté en figure 3D, on effectue un second pliage longitudinal au niveau 9 situé au voisi­nage du bord latéral 10 rabattu lors du premier pliage. Le pliage au niveau 9 est effectué de façon que l'angle formé par le seuil 2 et l'embase 1 soit aigu, que la face convexe de seuil sort dirigée vers l'extérieur et que le bord latéral rabattu 10 lors du premier pliage soit situé à l'intérieur. De préférence, l'angle formé par le seuil et l'embase est compris entre 45° et 80° environ. Pour que la barre de seuil puisse être vissée au sol, il suffit, avant tout pliage, d'effectuer des orifices 3 disposés régulièrement longitudinalement à l'intérieur de la zone comprise entre la ligne de pliage au niveau 9 et le bord latéral correspondant 11.FIGS. 3A to 3D represent the various essential stages in the folding of the metal strip in order to constitute the threshold bar according to the invention. We start from a metal strip of constant width, as shown in FIG. 3A. This metal strip is scrolled longitudinally by passing it through a train of rollers so as to continuously cause a first longitudinal folding at level 8. The strip width between the fold line at level 8 and the side edge 10 is less than the bandwidth between the same fold line at level 8 and the other side edge 11. The portion of the strip between the fold line at level 8 and the side edge 10 is thus folded flat against the rest of the strip, as shown in Figure 3B. The part of the strip which is thus found in double thickness is then curved longitudinally, as shown in FIG. 3C, so that the part of the folded strip is found on the concave side. Then, as shown in FIG. 3D, a second longitudinal folding is carried out at level 9 located in the vicinity of the lateral edge 10 folded down during the first folding. The folding at level 9 is carried out so that the angle formed by the threshold 2 and the base 1 is acute, that the convex threshold face comes out towards the outside and that the folded side edge 10 during the first folding is located inside. Preferably, the angle formed by the threshold and the base is between approximately 45 ° and 80 °. So that the threshold bar can be screwed to the ground, it suffices, before any folding, to make holes 3 arranged regularly longitudinally inside the zone between the fold line at level 9 and the corresponding lateral edge 11 .

On peut constater aussi que les deux pliages longitudi­naux réalisés aux niveaux 8 et 9 que le bombage de la partie externe du seuil 2 s'effectuent dans un sens tel que le revêtement décoratif éventuel apposé initialement sur la bande métallique est étiré, ce qui ne nuit pas à son adhérence. La barre de seuil conforme à l'invention peut en conséquence présenter un revêtement décoratif de grande résistance et très économique à réaliser puisqu'il peut étre collé à plat lors de la fabrication de la ban­de métallique. Le revêtement peur présenter, en particulier, l'aspect du bois. Par contre, pour les barres de seuil de l'art antérieur réalisées par extrusion, il n'est pas possible, posté­rieurement à l'extrusion, de les recouvrir d'un revêtement décoratif autre qu'une peinture de manière économique et efficace et tout revêtement effectué antérieurement à l'extrusion serait détruit par cette opération.It can also be seen that the two longitudinal folds made at levels 8 and 9 that the bending of the external part of the threshold 2 is carried out in a direction such that the decorative coating, if any, initially applied to the metal strip is stretched, which does not harm not to its grip. The threshold bar according to the invention may therefore have a decorative coating of great resistance and very economical to produce since it can be glued flat during the manufacture of the metal strip. The coating can present, in particular, the appearance of wood. On the other hand, for the threshold bars of the prior art produced by extrusion, it is not possible, after the extrusion, to cover them with a decorative coating other than a paint in an economical and effective manner and all coating prior to extrusion would be destroyed by this operation.

La présente invention est susceptible de nombreuses variantes et modifications. Par exemple, alors que dans le cadre du mode de réalisation ci-dessus la fixation de la barre de seuil était assurée par vissage, elle pourrait également être assurée par collage, le seuil étant rabattu après collage de l'embase et positionnement d'une moquette sur celle-ci. En outre, l'embase n'est pas nécessairement plane mais pourrait, par exemple, du côté de la zone de pliage être incurvée pour former un bec dirigé vers le bas pour permettre des rattrapages de niveau quant l'embase est posée sur une thibaude ou que des bandes adhésives créent une surépaisseur, ou que la zone extrême de l'embase, du côté du pliage, vient recouvrir une zone de hauteur différente de la zone de fixation de l'embase, etc.The present invention is susceptible of numerous variants and modifications. For example, while in the context of the above embodiment, the fixing of the threshold bar was ensured by screwing, it could also be ensured by gluing, the threshold being folded down after gluing of the base and positioning of a carpet on it. In addition, the base is not necessarily flat but could, for example, on the side of the folding zone be curved to form a beak directed downward to allow level adjustments when the base is placed on a pad. or that adhesive strips create an extra thickness, or that the extreme zone of the base, on the side of the folding, comes to cover a zone of height different from the zone of fixing of the base, etc.

Claims (4)

1. Barre de seuil comprenant une partie plane formant embase (1) destinée à être fixée au sol (5) et une partie bombée (2) formant seuil destinée à être rabattue sur l'embase (1) après fixatoin de celle-ci au sol, cette barre de seuil étant réalisée à partir d'une seule bande métallique, et étant caractérisée en ce que le seuil (2) est constitué de deux épaisseurs accolées de la bandes métallique, et en ce que l'embase (1) est constituée d'une simple épaisseur de la bande métallique.1. Threshold bar comprising a flat part forming a base (1) intended to be fixed to the ground (5) and a curved part (2) forming a threshold intended to be folded down on the base (1) after fixing it to the floor, this threshold bar being produced from a single metal strip, and being characterized in that the threshold (2) consists of two thicknesses joined to the metal strip, and in that the base (1) is consisting of a simple thickness of the metal strip. 2. Barre de seuil selon la revendication 1, caractérisée en ce que la bande métallique est constituée d'un alliage ferreux.2. Threshold bar according to claim 1, characterized in that the metal strip consists of a ferrous alloy. 3. Barre de seuil selon l'une des revendications 1 ou 2, caractérisée en ce que la bande métallique est préalablement revê­tue sur l'une de ses faces d'un matériau décoratif mince de sorte qu'après réalisation de la barre de seuil le matériau mince soit situé sur la surface extérieure de seuil.3. threshold bar according to one of claims 1 or 2, characterized in that the metal strip is previously coated on one of its faces with a thin decorative material so that after completion of the threshold bar the thin material be located on the outer threshold surface. 4. Procédé de réalisation d'une barre de seuil selon l'une quelconque des revendications 1 à 3, caractérisé en ce que la bande métallique est défilée en continu et passe successivement dans une série de galets destinés à assurer un premier pliage lon­gitudinal (8) de la bande métallique suivi d'un bombage des deux épaisseurs ainsi obtenues, et que l'embase (1) est obtenue par un second pliage longitudinal (9) situé au voisinage du bord latéral (10) rabattu lors du premier pliage, de façon que l'angle formé par le seuil et l'embase soit aigu, que la face convexe du seuil (2) soit dirigée vers l'extérieur et que le bord latéral (10) ra­battu lors du premier pliage soit situé à l'intérieur.4. Method for producing a threshold bar according to any one of claims 1 to 3, characterized in that the metal strip is continuously scrolled and passes successively through a series of rollers intended to ensure a first longitudinal folding (8 ) of the metal strip followed by bending of the two thicknesses thus obtained, and that the base (1) is obtained by a second longitudinal folding (9) located in the vicinity of the lateral edge (10) folded down during the first folding, so that the angle formed by the threshold and the base is acute, that the convex face of the threshold (2) is directed towards the outside and that the lateral edge (10) folded down during the first folding is located inside .
EP89420025A 1988-02-01 1989-01-31 Edging strip and method of making it Expired - Lifetime EP0327474B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89420025T ATE80984T1 (en) 1988-02-01 1989-01-31 PROFILE RAIL AND METHOD OF MANUFACTURE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8801468 1988-02-01
FR8801468A FR2626612B1 (en) 1988-02-01 1988-02-01 THRESHOLD BAR AND ITS MANUFACTURING METHOD

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EP0327474A1 true EP0327474A1 (en) 1989-08-09
EP0327474B1 EP0327474B1 (en) 1992-09-30

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Application Number Title Priority Date Filing Date
EP89420025A Expired - Lifetime EP0327474B1 (en) 1988-02-01 1989-01-31 Edging strip and method of making it

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EP (1) EP0327474B1 (en)
AT (1) ATE80984T1 (en)
DE (1) DE68903002T2 (en)
FR (1) FR2626612B1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1354155A (en) * 1920-03-04 1920-09-28 Frank R Barclay Seam and edge binder for floor-coverings
US2687545A (en) * 1953-06-01 1954-08-31 Frank S Karas Combined binding and anchor member for rugs
DE8432843U1 (en) * 1984-11-09 1985-05-30 Scholz, Michael, 5860 Iserlohn Aluminum carpet rail

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1354155A (en) * 1920-03-04 1920-09-28 Frank R Barclay Seam and edge binder for floor-coverings
US2687545A (en) * 1953-06-01 1954-08-31 Frank S Karas Combined binding and anchor member for rugs
DE8432843U1 (en) * 1984-11-09 1985-05-30 Scholz, Michael, 5860 Iserlohn Aluminum carpet rail

Also Published As

Publication number Publication date
FR2626612A1 (en) 1989-08-04
DE68903002T2 (en) 1993-04-15
EP0327474B1 (en) 1992-09-30
DE68903002D1 (en) 1992-11-05
ATE80984T1 (en) 1992-10-15
FR2626612B1 (en) 1992-02-07

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