EP0398785B1 - Connecting element for pieces of wood - Google Patents

Connecting element for pieces of wood Download PDF

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Publication number
EP0398785B1
EP0398785B1 EP19900401227 EP90401227A EP0398785B1 EP 0398785 B1 EP0398785 B1 EP 0398785B1 EP 19900401227 EP19900401227 EP 19900401227 EP 90401227 A EP90401227 A EP 90401227A EP 0398785 B1 EP0398785 B1 EP 0398785B1
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EP
European Patent Office
Prior art keywords
teeth
profile
directed
wood
pieces
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP19900401227
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German (de)
French (fr)
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EP0398785A1 (en
Inventor
Christian Preziosa
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Individual
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Individual
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/38—Connections for building structures in general
    • E04B1/48—Dowels, i.e. members adapted to penetrate the surfaces of two parts and to take the shear stresses
    • E04B1/49—Dowels, i.e. members adapted to penetrate the surfaces of two parts and to take the shear stresses with self-penetrating parts, e.g. claw dowels

Definitions

  • the present invention relates to a profiled element for assembling two wooden parts.
  • This element has the shape of a U in the wings of which are formed teeth directed one on one side and the other on the opposite side; an element of this kind is described in German patent 815 280.
  • the teeth are similar to the teeth of a hook and, if they prevent the separation of two pieces fitted one in the 'other, do not allow the transmission of a transverse shearing force.
  • the connecting element according to the invention is characterized in that the teeth are tiapezoidal, their small base being attached to the profile and their oblique leading edge and in that the teeth directed towards the outside of the element are formed near the outer edge of the wings while the teeth directed inward are formed in the vicinity of the bottom of the profile.
  • the bottom of the element may also have teeth turned one inward and the other outward.
  • the joining profile 1 is intended for assembling a piece of wood 2 in a groove 3 of a piece of wood 4.
  • Profile 1 has a U-section and its wings 1 a and 1 b have teeth 5 a and 5 b cut and folded the first inwards and the second outwards.
  • the teeth 5 a folded inward are provided in the vicinity of the bottom 1 c of the profile while the teeth 5 b folded outward are provided in the vicinity of the upper edge of the wings 1 a and 1 b ; these teeth are in the shape of a rectangular trapezoid, their small base being adjacent to the wing and their leading edge 6 a or 6 b oblique.
  • the force f1 exerted by a tooth 5 b on the part 4 corresponds to a reaction f2 in the opposite direction; this reaction is broken down into a force f3 directed in the direction of the free edge 6b and a force f4 perpendicular to the wing and directed towards the inside of the profile ( Figure 3); this force therefore tends to tighten the corresponding wing 1 a or 1 b on the part 2.
  • a reaction whose component perpendicular to the wing is directed towards the exterior; this force thus tends to clamp the profile against the wall of the groove 3.
  • the bottom 1 c of the profile may also include teeth 7 a and 7 b directed one towards the outside and the other towards the inside, as seen in Figure 4.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Joining Of Building Structures In Genera (AREA)

Description

La présente invention a pour objet un élément profilé d'assemblage de deux pièces en bois.The present invention relates to a profiled element for assembling two wooden parts.

Cet élément a la forme d'un U dans les ailes duquel sont ménagées des dents dirigées les unes d'un côté et les autres du côté opposé; un élément de ce genre est décrit dans le brevet allemand 815 280. Mais dans l'élément d'assemblage connu, les dents sont analogues aux dents d'un hameçon et, si elles empêchent la séparation de deux pièces emmanchées l'une dans l'autre, ne permettent pas la transmission d'un effort de cisaillement transversal. L'élément d'assemblage selon l'invention est caractérisé en ce que les dents sont tiapézoïdales, leur petite base étant attenante au profilé et leur bord d'attaque oblique et en ce que les dents dirigées vers l'extérieur de l'élément sont ménagées à proximité du bord extérieur des ailes alors que les dents dirigées vers l'intérieur sont ménagées au voisinage du fond du profilé.This element has the shape of a U in the wings of which are formed teeth directed one on one side and the other on the opposite side; an element of this kind is described in German patent 815 280. But in the known assembly element, the teeth are similar to the teeth of a hook and, if they prevent the separation of two pieces fitted one in the 'other, do not allow the transmission of a transverse shearing force. The connecting element according to the invention is characterized in that the teeth are tiapezoidal, their small base being attached to the profile and their oblique leading edge and in that the teeth directed towards the outside of the element are formed near the outer edge of the wings while the teeth directed inward are formed in the vicinity of the bottom of the profile.

Le fond de l'élément peut également comporter des dents tournées les unes vers l'intérieur et les autres vers l'extérieur.The bottom of the element may also have teeth turned one inward and the other outward.

On a décrit ci-après, à titre d'exemples non limitatifs, divers modes de réalisation de l'élément d'assemblage selon l'invention, avec référence aux dessins annexés dans lesquels :

  • La Figure 1 est une vue en coupe montrant deux pièces de bois assemblées avec un premier mode de réalisation de l'élément;
  • La Figure 2 est une vue en élévation de l'élément d'assemblage de la Figure 1;
  • La Figure 3 est un schéma des forces exercées par une dent lors du pressage du profilé;
  • La Figure 4 est une vue en perspective d'un second mode de réalisation de l'élément d'assemblage;
Various embodiments of the assembly element according to the invention have been described below, by way of non-limiting examples, with reference to the appended drawings in which:
  • Figure 1 is a sectional view showing two pieces of wood assembled with a first embodiment of the element;
  • Figure 2 is an elevational view of the assembly member of Figure 1;
  • Figure 3 is a diagram of the forces exerted by a tooth during the pressing of the profile;
  • Figure 4 is a perspective view of a second embodiment of the assembly element;

Tel qu'il est représenté aux Figures 1 et 2, le profilé d'assemblage 1 est destiné à l'assemblage d'une pièce de bois 2 dans une rainure 3 d'une pièce de bois 4.As shown in Figures 1 and 2, the joining profile 1 is intended for assembling a piece of wood 2 in a groove 3 of a piece of wood 4.

Le profilé 1 a une section en U et ses ailes 1a et 1b présentent des dents 5a et 5b découpées et repliées les premières vers l'intérieur et les secondes vers l'extérieur. Les dents 5a repliées vers l'intérieur sont prévues au voisinage du fond 1c du profilé alors que les dents 5b repliées vers l'extérieur sont ménagées au voisinage du bord supérieur des ailes 1a et 1b; ces dents sont en forme de trapèze rectangle, leur petite base étant attenante à l'aile et leur bord d'attaque 6a ou 6b oblique. Pour assembler les pièces 2 et 4 on engage partiellement le profilé 1 dans la rainure 3 de la pièce 4 et on engage partiellement la pièce 2 dans le profilé 1; on presse alors la pièce 2 dans la rainure 3, comme indiqué par la flèche F. A la force f1 exercée par une dent 5b sur la pièce 4 correspond une réaction f2 de sens contraire; cette réaction se décomposé en une force f3 dirigée dans le sens du bord libre 6b et une force f4 perpendiculaire à l'aile et dirigée vers l'intérieur du profilé (Figure 3); cette force tend donc à serrer l'aile correspondante 1a ou 1b sur la pièce 2. De même, à la force exercée par la pièce 2 sur une dent 5a correspond une réaction dont la composante perpendiculaire à l'aile est dirigée vers l'extérieur; cette force tend ainsi à serrer le profilé contre la paroi de la rainure 3. Il y a donc un auto-blocage de la pièce 2 dans la pièce 4.Profile 1 has a U-section and its wings 1 a and 1 b have teeth 5 a and 5 b cut and folded the first inwards and the second outwards. The teeth 5 a folded inward are provided in the vicinity of the bottom 1 c of the profile while the teeth 5 b folded outward are provided in the vicinity of the upper edge of the wings 1 a and 1 b ; these teeth are in the shape of a rectangular trapezoid, their small base being adjacent to the wing and their leading edge 6 a or 6 b oblique. To assemble the parts 2 and 4, the profile 1 is partially engaged in the groove 3 of the part 4 and the part 2 is partially engaged in the profile 1; the part 2 is then pressed in the groove 3, as indicated by the arrow F. The force f1 exerted by a tooth 5 b on the part 4 corresponds to a reaction f2 in the opposite direction; this reaction is broken down into a force f3 directed in the direction of the free edge 6b and a force f4 perpendicular to the wing and directed towards the inside of the profile (Figure 3); this force therefore tends to tighten the corresponding wing 1 a or 1 b on the part 2. Similarly, to the force exerted by the part 2 on a tooth 5 a corresponds a reaction whose component perpendicular to the wing is directed towards the exterior; this force thus tends to clamp the profile against the wall of the groove 3. There is therefore a self-locking of the part 2 in the part 4.

Le fond 1c du profilé peut également comporter des dents 7a et 7b dirigées les unes vers l'extérieur et les autres vers l'intérieur, comme on le voit à la Figure 4.The bottom 1 c of the profile may also include teeth 7 a and 7 b directed one towards the outside and the other towards the inside, as seen in Figure 4.

Il va de soi que la présente invention ne doit pas être considérée comme limitée aux divers modes de réalisation décrits et représentés, mais en couvre, au contraire, toutes les variantes telles que décrites dans les revendications.It goes without saying that the present invention should not be considered as limited to the various embodiments described and shown, but on the contrary covers all the variants as described in the claims.

Claims (3)

  1. Streamlined element for connecting two pieces of wood, said element having the shape of a U, teeth being fitted in the wings of said element, some teeth being directed on one side and the other on the opposing side,
    wherein the teeth are trapezoidal, their small base being adjacent to the profile and their attack edge being oblique, and wherein the teeth (5b) directed outside the element are fitted close to the outer edge of the wings (1a and 1b), whereas the teeth (5a) directed inwardly are provided close to the bottom (1c) of the profile.
  2. Streamlined element according to claim 1,
    wherein the teeth have the shape of a trapezium.
  3. Streamlined element according to claim 1 or 2,
    wherein the bottom (1c) of the element comprises teeth (7a and 7b), certain teeth being directed inwardly and others outwardly.
EP19900401227 1989-05-17 1990-05-09 Connecting element for pieces of wood Expired - Lifetime EP0398785B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8906881 1989-05-17
FR8906881A FR2647164B1 (en) 1989-05-17 1989-05-17 WOOD PIECES ASSEMBLY ELEMENT

Publications (2)

Publication Number Publication Date
EP0398785A1 EP0398785A1 (en) 1990-11-22
EP0398785B1 true EP0398785B1 (en) 1992-12-23

Family

ID=9382020

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900401227 Expired - Lifetime EP0398785B1 (en) 1989-05-17 1990-05-09 Connecting element for pieces of wood

Country Status (3)

Country Link
EP (1) EP0398785B1 (en)
DE (1) DE69000638T2 (en)
FR (1) FR2647164B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2680396B1 (en) * 1991-08-12 1993-10-15 Christian Preziosa ELEMENT FOR ASSEMBLING WOOD PARTS.
FR3098871B1 (en) * 2019-07-16 2022-10-14 Christian Paul Victor Preziosa Improvement of a device for assembling wooden parts.

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR390687A (en) * 1908-05-30 1908-10-12 Gustave Kuranda Staple intended to prevent wood from splitting
CH108643A (en) * 1924-02-09 1925-02-02 Ind Belieferungs Aktiengesells Clamp for pulling together and connecting timber and the like.
DE815280C (en) * 1939-06-03 1951-10-01 Internat Conitor Company As U-shaped insert made of sheet metal to join boards or rods that are connected with tongue and groove
US2715730A (en) * 1952-03-10 1955-08-23 E B Packard Co Inc Fastener inserting tool
DE1909820A1 (en) * 1969-02-27 1970-10-08 Herbert Lehmann Device for attaching a door lining to a door lining

Also Published As

Publication number Publication date
DE69000638D1 (en) 1993-02-04
FR2647164A1 (en) 1990-11-23
EP0398785A1 (en) 1990-11-22
FR2647164B1 (en) 1991-08-16
DE69000638T2 (en) 1993-06-03

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