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Publication numberEP1772088 B1
Publication typeGrant
Application numberEP20060291550
Publication dateMay 7, 2008
Filing dateOct 4, 2006
Priority dateOct 10, 2005
Also published asCN101024238A, CN101024238B, DE602006001092D1, EP1772088A1, US20070084038
Publication number06291550, 06291550.9, 2006291550, EP 1772088 B1, EP 1772088B1, EP-B1-1772088, EP06291550, EP1772088 B1, EP1772088B1, EP20060291550
InventorsPatrick Cochet
ApplicantSeb Sa
Export CitationBiBTeX, EndNote, RefMan
External Links: Espacenet, EP Register
Riveting process
EP 1772088 B1
Images(1)
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Claims(10)
  1. Method for riveting a gripping device on the body of a kitchen utensil comprising a preparation step during which the gripping device is applied in contact with the body, and an insertion step during which a rivet (3) is driven so as to pass through the two elements (1, 2), characterised in that it comprises a presentation step between the preparation step and the insertion step, during which a penetration surface (6, 7) of the rivet (3) is brought into contact with a portion of the surface (8, 9) of a first element (1), the penetration surface (6, 7) being shaped such that during the insertion step, the rivet (3) passes through the first element (1) at a first riveting hole (10) and entrains the surface portion (8, 9) so as to trap a portion of volume (11) of the first element (1) between the rivet (3) and a second riveting hole (12) that is carried by the second element (2) and into which the rivet fits (3).
  2. Riveting method according to claim 1, characterised in that the second riveting hole (12) is made by the penetration surface (7) during the insertion step.
  3. Riveting method according to claim 1, characterised in that the second riveting hole (12) is made before the preparation step and is used as a rivet guide during the insertion step.
  4. Riveting method according to one of claims 1 to 3, characterised in that the first riveting hole (10) is made during the insertion step by the penetration surface (7) that is formed by the free end (13) of the body (4) of the rivet (3).
  5. Riveting method according to claim 3, characterised in that the first riveting hole (10) is made before the preparation step and is arranged in line with the second riveting hole (12) during the preparation step, the penetration surface (6), formed by the collar (6) of the rivet connecting the head (5) to the body (4), abutting against the periphery (8) of the first riveting hole (10) during the presentation step.
  6. Riveting method according to claim 5, characterised in that during the insertion step, entrainment of the portion of volume (11) by the collar (6) causes flattening of at least one of the two elements (1, 2) under the head (5) so that at the end of this step, the head (5) is flush with the surface of the first element (1).
  7. Riveting method according to one of claims 4 to 6 dependent on claim 3, characterised in that the second riveting hole (12) has a chamfer (17, 19) oriented so as to reduce the diameter of the hole (12) for a displacement in the direction of the rivet (3).
  8. Riveting method according to claim 7, characterised in that the chamfer (17) is made close to the entry (16) to the second riveting hole (12).
  9. Riveting method according to claim 7, characterised in that the chamfer (19) is made close to the exit (18) from the second riveting hole (12).
  10. Riveting method according to one of claims 1 to 9, characterised in that the penetration surface (6, 7) has a conical, shell or prismatic shape.
Description  translated from French
  • [0001] [0001]
    La présente invention se rapporte à un procédé de rivetage d'un organe de préhension sur le corps d'un article culinaire, par exemple un procédé de rivetage d'une poignée, d'une anse... The present invention relates to a method for riveting a gripping device on the body of a kitchen, for example a riveting process a handle, a handle ... sur le corps d'une casserole, d'une poêle, d'un fait-tout... on the body of a pot, a pan, a stewpot ...
  • [0002] [0002]
    On connaît un procédé de rivetage d'un organe de préhension sur le corps d'un article culinaire, du type comprenant une étape de préparation lors de laquelle l'organe de préhension est appliqué contre le corps, et une étape d'introduction lors de laquelle un rivet est entraîné de façon à traverser les deux éléments. Discloses a method for riveting a gripping device on the body of a kitchen, of the type comprising a step of preparing at which the gripper is pressed against the body, and a step of introducing at which a rivet is driven so as to pass through the two elements. De plus, de façon classique, une fois le rivet mis en place, l'extrémité de ce dernier ayant traversé les deux éléments est écrasé de façon à former la liaison entre les deux éléments (voir par exemple le document In addition, conventionally, once the rivet in place, the end of the latter has passed through the two elements is crushed to form the connection between the two elements (see for example document FR-A-2 683 136 FR-A-2683136 , qui montre un procédé selon le préambule de la revendication 1). , Which shows a method according to the preamble of claim 1).
  • [0003] [0003]
    L'inconvénient d'un tel procédé est d'exiger des tolérances concernant les dimensions des trous de rivetage des deux éléments et du fût du rivet, des dispersions extrêmes pouvant engendrer des risques de discontinuité entre le rivet et au moins l'un des trous de rivetage une fois le rivetage réalisé, ce qui peut entraîner des problèmes d'étanchéité. The disadvantage of such a method is to require tolerances on the dimensions of holes and riveting the two elements of the shank of the rivet, extreme dispersions which risks a gap between the rivet and at least one of the holes riveting riveting once realized, which can cause sealing problems.
  • [0004] [0004]
    La présente invention vise à pallier les inconvénients précités, c'est à dire à réaliser un procédé de rivetage permettant de réduire les exigences de tolérances concernant les dimensions des trous de rivetage et le fût du rivet et d'assurer une plus grande fiabilité à l'étanchéité du rivetage. The present invention aims to overcome the above drawbacks, ie to achieve a riveting process to reduce tolerance requirements on the dimensions of the holes was riveting and rivet and ensure greater reliability in sealing riveting.
  • [0005] [0005]
    Selon l'invention, le procédé de rivetage du type précité comprend, entre l'étape de préparation et l'étape d'introduction, une étape de présentation lors de laquelle une surface de pénétration du rivet est mise en butée contre une portion de surface d'un premier élément, la surface de pénétration étant conformée de sorte que lors de l'étape d'introduction, le rivet traverse le premier élément au niveau d'un premier trou de rivetage et entraîne la portion de surface de façon à la coincer entre lui et un second trou de rivetage qui est porté par le second élément et qui reçoit le rivet. According to the invention, the riveting process of the aforementioned type comprises, between the preparation step and the insertion step, a step of presentation during which a penetration surface of the rivet is brought into abutment against a surface portion a first element, the penetration surface being shaped such that during the insertion step, the rivet passes through the first element at a first riveting hole and causes the portion of the surface to bind between itself and a second riveting hole that is carried by the second element and which receives the rivet.
  • [0006] [0006]
    Ainsi, selon l'invention, les tolérances entre les dimensions du fût du rivet et celles du trou de rivetage porté par le second élément sont moins contraignantes, le jeu devant permettre le fluage d'une portion du premier élément. Thus, according to the invention, the tolerances between the dimensions of the shank of the rivet and rivet hole of those carried by the second member are less stringent, the game to enable the flow of a portion of the first member. De plus, du fait du fluage et du coincement qui en découle, la portion coincée du premier élément assure une amélioration de l'étanchéité du rivetage. In addition, due to creep and consequent jamming, the stuck portion of the first member provides improved seal of the riveting.
  • [0007] [0007]
    D'autres particularités et avantages apparaîtront dans la description des modes de réalisation donnés à titre d'exemples non limitatifs et illustrés par les dessins dans lesquels : Other features and advantages will become apparent in the description of the embodiments given as non-limiting example and illustrated in the drawings in which:
    • La The figure 1 Figure 1 est une vue schématique en coupe du rivet et des deux éléments lors de l'étape de présentation d'un premier mode de réalisation du procédé conforme à la présente invention, is a schematic sectional view of the rivet and of the two elements during the step of presenting a first embodiment of the method according to the present invention,
    • La The figure 2 Figure 2 est une vue schématique en coupe du rivetage obtenu par la mise en oeuvre du premier mode de réalisation du procédé, is a diagrammatic view in section of the riveting obtained by the implementation of the first embodiment of the method,
    • La The figure 3 Figure 3 est une reproduction photographique du rivetage obtenu par la mise en oeuvre d'un second mode de réalisation du procédé, is a photographic reproduction of the riveting obtained by the implementation of a second embodiment of the method,
    • La The figure 4 Figure 4 est une vue schématique en coupe du rivet et des deux éléments lors de l'étape d'introduction d'un troisième mode de réalisation du procédé, is a schematic sectional view of the rivet and of the two elements during the step of introducing a third embodiment of the method,
    • La The figure 5 Figure 5 est une vue schématique en coupe similaire à la is a schematic sectional view similar to figure 4 Figure 4 , une fois l'étape d'introduction achevée, Once completed the step of introducing,
    • La The figure 6 Figure 6 est une vue schématique en coupe similaire aux is a schematic sectional view similar to figures 4 et 5 Figures 4 and 5 , représentant le rivetage obtenu par la mise en oeuvre du troisième mode de réalisation du procédé, Representing the riveting obtained by the implementation of the third embodiment of the method,
    • La The figure 7 Figure 7 est une vue schématique en coupe représentant le rivetage obtenu par la mise en oeuvre d'un quatrième mode de réalisation du procédé, et is a schematic sectional view showing the riveting obtained by the implementation of a fourth embodiment of the method, and
    • La The figure 8 Figure 8 est une vue schématique en coupe représentant le rivetage obtenu par la mise en oeuvre d'un cinquième mode de réalisation du procédé. is a schematic sectional view showing the riveting obtained by the implementation of a fifth embodiment of the method.
  • [0008] [0008]
    Comme on peut le voir aux différentes figures, la mise en oeuvre de la présente invention nécessite l'emploi d'un premier élément 1 (par exemple le corps d'un ustensile culinaire), d'un second élément 2 (par exemple l'organe de préhension d'un ustensile culinaire) et d'un rivet 3 (de préférence en acier inoxydable) qui comprend un fût 4 (la partie destinée à traverser les deux éléments), une tête 5 (la partie n'ayant pas traversé les deux éléments), et une surface de pénétration 6,7. As can be seen in the various figures, the implementation of the present invention requires the use of a first one (eg the body of a kitchen utensil), a second element 2 (eg the gripping of a kitchen utensil) and a rivet 3 (preferably stainless steel) which comprises a shaft 4 (the portion to pass through the two elements), a head 5 (the portion that has not passed through the two), and an engaging surface 6.7.
  • [0009] [0009]
    Dans une première étape de préparation, les deux éléments 1,2 sont correctement appliqués l'un contre l'autre. In a first preparation step, the two elements 1.2 are properly pressed against each other. Ensuite, dans une seconde étape de présentation, le rivet 3 est correctement positionné par rapport aux deux éléments 1,2, plus précisément, sa surface de pénétration 6,7 est mise en butée contre une portion de surface 8,9 du premier élément 1. Then, in a second step of presenting, the rivet 3 is positioned correctly in relation to the two elements 1.2, more specifically, the surface of penetration 6.7 is abutted against a surface portion of the first member 1 8.9 . Après, dans une troisième étape d'introduction, le rivet 3 est entraîné (généralement par un coup porté à sa tête 5) de façon à traverser les deux éléments 1,2. Later, in a third step of introducing the rivet 3 is driven (usually by a blow to the head 5) to pass through the two elements 1,2. Lors de cette étape d'introduction, du fait de la conformation de la surface de pénétration 6,7 et de sa mise en butée contre la portion de surface 8,9 du premier élément 1, le rivet 3, en traversant le premier élément 1 au niveau d'un premier trou de rivetage 10, entraîne la portion de surface 8,9 avec lui. During this insertion step, due to the conformation of the penetration surface and 6.7 of its abutment against the surface portion of the first member 1 8.9, the rivet 3, passing through the first element 1 at a first riveting hole 10 causes the surface portion 8.9 with him. Ainsi, le résultat de cette étape est le fluage d'une portion de volume 11 du premier élément 1 qui est coincé entre le rivet 3 (plus précisément, le fût 4 du rivet 3) et le second élément 2 (plus précisément, un second trou de rivetage 12 porté par le second élément 2 dans lequel est logé le fût 4 du rivet 3). Thus, the result of this step is the flow of a portion of volume 11 of the first element 1 that is stuck between the rivet 3 (more precisely, the shaft 4 of the rivet 3) and the second element 2 (more precisely, a second riveting hole 12 carried by the second element 2 which accommodates the shank of the rivet 4 3). Enfin, dans une dernière étape de rivetage, l'extrémité libre 13 du fût 4 du rivet 3 est frappé de façon à former un bourrelet de coincement 14 (le rivet 3 étant maintenu en place par une pièce apposée contre sa tête 5). Finally, in a last step of riveting, the free end 13 of the shaft 4 of the rivet 3 is struck so as to form a bead of wedge 14 (the rivet 3 is held in place by a piece affixed against his head 5). Ainsi, selon le procédé de rivetage, le coincement des deux pièces 1,2 est réalisée par le gonflement classique du rivet 3 et par le fluage de la portion de volume 11 entraînée du premier élément 1. Thus, according to the method of riveting, clamping of the two parts is made 1.2 by the swelling of the conventional rivet 3 and the flow of the volume portion of the first driven member 11 1.
  • [0010] [0010]
    De façon générale, les dimensions du fût 4 et celles du second trou de rivetage 12 doivent permettrent l'introduction de la matière du premier élément 1. In general, the dimensions of the barrel 4 and those of the second riveting hole 12 must enable the introduction of material from the first element 1. Par ailleurs, le profil de la surface de pénétration 6,7 et celui de la portion de surface 8,9 contre laquelle elle est en butée sont conformées de façon à faciliter l'entraînement de matière du premier élément 1 (il doit y avoir un certain angle entre les deux surfaces au niveau de leur contact). In addition, the surface profile of 6.7 and penetration of the surface portion of 8.9 against which it abuts are shaped to facilitate the training material of the first element 1 (there must be one angle between the two surfaces at their contact). Ainsi, la surface de pénétration 6,7 peut avantageusement présenter une forme conique, ogivale ou prismatique, par exemple. Thus, the surface penetration 6.7 may advantageously have a conical, ogival or prismatic, for example. De même la section droite de la surface de pénétration 6,7 peut être circulaire, carrée ou en croix, par exemple. The same cross-section of the surface penetration 6.7 may be circular, square or cross, for example. Dans le cas d'une surface conique, il est avantageux que le demi angle au sommet 15 soit d'environ 50°. In the case of a conical surface, it is advantageous that the half apex angle 15 of approximately 50 °. Les qualités du fluage dépendent également de la dureté du rivet 3 par rapport à celles des deux éléments 1,2, des dimensions respectives des trous de rivetage 10,12 et de l'épaisseur du premier élément 1. The qualities of the flow also depends on the hardness of the rivet 3 with respect to those of the two elements 1,2, the respective dimensions of the holes 10,12 and riveting of the thickness of the first member 1.
  • [0011] [0011]
    De préférence, afin d'obtenir un bon effet de coincement du premier élément 1 entre le rivet 3 et le second élément 2, le fluage doit être tel que la hauteur de pénétration du premier élément 1 dans le second élément 2 est supérieure au quart de la hauteur du second trou de rivetage 12. Preferably, in order to obtain a good wedging effect of the first element between the rivet 1 3 and the second element 2, the flow must be such that the penetration height of the first member 1 in the second element 2 is greater than a quarter of the height of the second riveting hole 12.
  • [0012] [0012]
    Dans les deux premiers modes de réalisation, tels qu'illustrés aux In the first two embodiments, as illustrated in figures 1 à 3 Figures 1 to 3 , chacun des deux éléments 1,2 présente, préalablement à l'étape de préparation, son trou de rivetage 10,12. , Each of the two elements presents 1.2, prior to the step of preparing, the riveting hole 10,12. Comme on peut le voir à la As can be seen in figure 1 Figure 1 , à l'étape de présentation, les deux trous de rivetage 10,12 sont disposés dans le prolongement de l'un de l'autre, le fût 4 du rivet 3 est introduit des les deux trous 10,12, et la surface de pénétration 6, formée par la collerette 6 du rivet 3 reliant la tête 5 au fût 4, est en butée contre la périphérie 8 du premier trou de rivetage 10 (qui est de même dimension ou de dimension inférieur au second trou de rivetage 12). , The step of presenting to the two holes riveting 10.12 are arranged in extension of one another, the shaft 4 of the rivet 3 is inserted in the two holes 10,12, and the surface of penetration 6, formed by the flange 6 of the rivet connecting the head 3 to the shaft 4 5, abuts against the periphery 8 of the first riveting hole 10 (which is the same size or a size smaller than the second riveting hole 12). De tels modes de réalisation permettent d'obtenir un rivetage dans lequel la tête 5 du rivet 3 est affleurant à la surface du premier élément 1, sans avoir à former dans le premier élément 1 un chanfrein servant de logement à la tête 5 : lors de l'étape d'introduction, l'entraînement de la portion de volume 11 par la collerette 6 entraîne un aplatissement d'au moins un des deux éléments 1,2 sous la tête 5 (selon la rigidité de ces éléments 1,2). Such embodiments allow to obtain a riveting wherein the head 5 of the rivet 3 is flush with the surface of the first member 1, without having to be formed in the first element 1 with a chamfer serving to house the head 5: when the step of introducing, the drive of the portion of volume by the collar 11 6 causes a flattening of at least one of the two elements under the head 5 1.2 (depending on the rigidity of these elements 1,2).
  • [0013] [0013]
    La The figure 2 Figure 2 illustre le rivetage obtenu quand le premier élément 1 est plus rigide (typiquement, en acier inoxydable de limite élastique 270 MPa, par exemple) que le second élément 2 (typiquement, en aluminium de limite élastique 70 MPa par exemple). illustrates the riveting obtained when the first member 1 is more rigid (typically, stainless steel yield strength 270 MPa, for example) as the second member 2 (typically aluminum Yield 70 MPa, for example). Dans ce cas, le second élément 2 est déformé du fait de la pression exercée sur le rivet 3 et transmise par le premier élément 2. In this case, the second element 2 is deformed due to the pressure exerted on the rivet 3 and transmitted by the first element 2.
  • [0014] [0014]
    La The figure 3 Figure 3 représentant le rivetage obtenu quand le second élément 2 est plus rigide (par exemple en acier inoxydable) que le premier élément 1 (par exemple en aluminium). representing the riveting obtained when the second member 2 is more rigid (eg stainless steel) as the first member 1 (for example aluminum). Dans ce cas, seul le premier élément 1 est déformé du fait de la pression exercée sur le rivet 3. In this case, only the first element 1 is deformed due to the pressure exerted on the rivet 3.
  • [0015] [0015]
    Dans les trois autres modes de réalisation, tels qu'illustrés aux In the three other embodiments, as illustrated in figures 4 à 8 Figures 4 to 8 , le second élément 2 présente, préalablement à l'étape de préparation, son trou de rivetage 12, contrairement au premier élément 1. , The second element 2 has, prior to the step of preparing, the riveting hole 12, unlike the first element 1. Lors de l'étape de préparation, le premier élément 1 plein (c'est à dire non troué) est apposé contre le second élément 2 et recouvre le second trou de rivetage 12. During the preparation stage, the first element 1 full (ie no holes) is placed against the second element 2 and covers the second riveting hole 12. Lors de l'étape de présentation, l'extrémité libre 13 du fût 4 du rivet 3 qui forme la surface de pénétration 7 est en butée contre la portion de surface 9 du premier élément 1 recouvrant le second trou de rivetage 12. During the presentation step, the free end 13 of the shaft 4 of the rivet 3 which forms the engaging surface 7 abuts against the surface portion 9 of the first element 1 covering the second riveting hole 12. Comme on peut le voir à la As can be seen in figure 4 Figure 4 , pendant l'étape d'introduction, la surface de pénétration 7 perce le premier élément 1 et réalise ainsi le premier trou de rivetage 10. During the introduction step, the penetration surface 7 pierces the first member 1 thus produced and the first riveting hole 10. Par ailleurs, le second trou de rivetage 12 est utilisé comme guide du rivet 3. In addition, the second riveting hole 12 is used as a guide rivet 3. De tels modes de réalisation présentent l'avantage se supprimer une étape préalable de perçage du premier élément. Such embodiments have the advantage to remove a prior step of drilling of the first element.
  • [0016] [0016]
    Dans la In figure 7 Figure 7 , le second trou de rivetage 12 présente, à son entrée 16, un chanfrein 17 orienté dans le sens d'une réduction du diamètre du trou 12 pour un déplacement dans le sens du rivet 3. , The second riveting hole 12 has, at its input 16, a chamfer 17 is oriented in the direction of reducing the diameter of the hole 12 for movement in the direction of the rivet 3. Ce chanfrein 17 permet de faciliter le fluage du premier élément 1. The chamfer 17 facilitates the flow of the first element 1.
  • [0017] [0017]
    Dans la In figure 8 Figure 8 , le second trou de rivetage 12 présente, à sa sortie 18, un chanfrein 19 orienté dans le sens d'une réduction du diamètre du trou 12 pour un déplacement dans le sens du rivet 3. , The second riveting hole 12 has, at its output 18, a chamfer 19 is oriented in the direction of reducing the diameter of the hole 12 for movement in the direction of the rivet 3. Ce chanfrein 19 permet de recevoir un volume 11 du premier élément 1 relativement important (partie large du second trou de rivetage 12) tout en permettant au gonflement du rivet 3 d'assurer par lui même une bonne étanchéité (partie étroite du second trou de rivetage 12). This chamfer 19 is used to receive a volume of the first member 11 one relatively large (wide portion of the second riveting hole 12) while allowing the swelling of the rivet 3 by itself to ensure a good seal (narrow section of the second riveting hole 12).
  • [0018] [0018]
    D'autres modes de réalisation de la présente invention sont possibles. Other embodiments of the present invention are possible. Il serait ainsi possible que le premier élément soit l'organe de préhension d'un ustensile culinaire et que le second élément soit le corps de l'ustensile. It is thus possible that the first element is the gripping of a kitchen utensil and the second element is the body of the utensil. Il serait aussi possible que non seulement le premier trou de rivetage soit réalisé lors de l'étape d'introduction par l'extrémité libre du fût du rivet, mais également le second trou de rivetage. It would be also possible that not only the first riveting hole is made during the step of introducing the free end of the shank of the rivet, but also the second riveting hole.
Classifications
International ClassificationA47J45/06, B21J15/02
Cooperative ClassificationB21J15/025, B21J15/02
European ClassificationB21J15/02, B21J15/02D
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