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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
Abstract  available in
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... sur le corps d'une casserole, d'une poêle, d'un fait-tout... The present invention relates to a method of riveting a gripping device on the body of a food item, for example a riveting process a handle, a handle on the body ... a saucepan , a pan, a Dutch oven ...
  • [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. A riveting process is known from a gripper on the body of a cooking utensil of the type comprising a preparation step during which the gripping device is applied against the body, and a step of introducing at wherein 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 Moreover, 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 drawback of such a method is to require the tolerances for the dimensions of the rivet holes of both elements and the shaft of the rivet, extreme dispersions which risks of discontinuity between the rivet and at least one of the holes riveting riveting performed once, which may result in 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 aforementioned drawbacks, ie to provide a riveting process to reduce tolerance requirements on the dimensions of the rivet hole and the shank of the rivet and to 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 surface portion so as to pinch the between it and a second riveting hole that is carried by the second member 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 hole and rivet those carried by the second member are less stringent, enabling the game to the creep 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. Furthermore, due to creep and consequent jamming, the stuck portion of the first member provides improved sealing of 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 by way of non-limiting example and illustrated by 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 of the two elements and 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 schematic sectional view 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 of the two elements and 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 insertion step,
    • 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 various figures, the implementation of the present invention requires the use of a first member 1 (e.g. the body of a kitchen utensil), a second member 2 (for example the gripping of a cooking utensil) and a rivet 3 (preferably stainless steel) that includes a shaft 4 (the portion designed to pass through both elements), a head 5 (the part does not pass through the two elements), and a penetration 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 applied correctly against one another. 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. 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. Then, in a second step of presenting, the rivet 3 is correctly positioned relative to the two elements 1,2, more precisely, its engaging surface 6.7 is abutted against a surface portion of the first member 1 8.9 . Then, in a third stage of introduction, three rivet is driven (usually by a blow to his head 5) to cross 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, due to the conformation of the surface of 6.7 and its penetration into abutment against the surface of the portion 8.9 of the first element 1, the step rivet 3, passing through the first element 1 at a first riveting hole 10 causes the portion of its surface with 8.9. 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 volume of a portion of one of the first member 11 which is pinched between the rivet 3 (more precisely, the shaft 4 of the rivet 3) and the second element 2 (specifically, a second riveting hole 12 carried by the second member 2 which accommodates the shank of the rivet 3 4). 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 shank 4 of the rivet 3 is struck to form a bead of wedge 14 (the rivet 3 being held in place by a patch applied against the 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 1,2 is performed by the conventional expansion of the rivet 3 and the flow volume of the 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. 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 general, the dimensions of the drum 4 and the second riveting hole 12 must enable the introduction of the material of the first member 1. Furthermore, the profile of the surface 6.7 and the penetration portion of the surface 8.9 against which it abuts are shaped so as to facilitate driving of the first element of material 1 (there must be a certain 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 may advantageously have penetration 6,7 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. Similarly, the cross section of the engaging surface may be 6.7 circular, square or cruciform, 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 is about 15 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. Grades creep also dependent upon the hardness of the rivet 3 with respect to those of the two elements 1,2, of the respective dimensions of riveting holes 10,12 and 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 effect of the first wedge member 1 between the rivet 3 and the second element 2, the flow must be such that the penetration depth of the first member 1 in the second member 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 1,2 present, prior to the preparation step, 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). In the step of presenting the two rivet holes 10,12 are arranged in the extension of one another, the shaft 4 of the rivet 3 is inserted in the two holes 10,12, and the surface penetration 6, formed by the flange 6 of the rivet connecting the head 3 to the shaft 4 of 5, abuts against the edge 8 of the first riveting hole 10 (which is the same size or dimension less 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 make it possible to obtain a riveting head 5 wherein the rivet 3 is flush with the surface of the first member 1, without forming the first element 1 in a chamfer serving to house the head 5: when the step of introducing, the drive of the volume portion 11 by the flange 6 causes a flattening of at least one of the two elements under the head 5 1.2 (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 of 270 MPa yield strength, 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 member 2 is deformed due to the pressure 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 (e.g. stainless steel) as the first member 1 (e.g. 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 member 1 is deformed due to the pressure on the rivet 3.
  • [0015] [0015]
    Dans les trois autres modes de réalisation, tels qu'illustrés aux In 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. 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. 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. Comme on peut le voir à la The second element 2 has, prior to the preparation stage, the riveting hole 12, unlike the first element 1. In the preparation stage, the first element 1 full (ie no holes) is affixed against the second element 2 and covers the second riveting hole 12. When the step of presenting, the free end 13 of the shank 4 of the rivet 3, which forms the engaging surface 7 abuts against the surface portion 9 1 the first member overlying the second riveting hole 12. 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. Par ailleurs, le second trou de rivetage 12 est utilisé comme guide du rivet 3. De tels modes de réalisation présentent l'avantage se supprimer une étape préalable de perçage du premier élément. During the introduction step, the penetration surface 7 pierces the first member 1 and thus carries out the first riveting hole 10. Furthermore, the second riveting hole is used as a guide 12 of the rivet 3. Such methods embodiment has 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. Ce chanfrein 17 permet de faciliter le fluage du premier élément 1. The second riveting hole 12 has at its input 16, a chamfer 17 extending in the direction of reducing the diameter of the hole 12 for movement in the direction of the rivet 3. The chamfer 17 facilitates the flow of the first 1 element.
  • [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. 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). The second riveting hole 12 has, at its output 18, a chamfer 19 extending in the direction of reducing the diameter of the hole 12 for movement in the direction of the rivet 3. This chamfer 19 is used to receive a volume of 11 relatively large first member 1 (wide portion of the second riveting hole 12) while allowing the expansion of the rivet 3 by itself to ensure a good seal (narrowest part of the second rivet 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 therefore possible that the first element is the gripping of a cooking utensil and the second member 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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