WO1995016139A1 - Fastening system using a rivet and a nut, assembly using said device, and fastening method - Google Patents

Fastening system using a rivet and a nut, assembly using said device, and fastening method Download PDF

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Publication number
WO1995016139A1
WO1995016139A1 PCT/FR1994/001307 FR9401307W WO9516139A1 WO 1995016139 A1 WO1995016139 A1 WO 1995016139A1 FR 9401307 W FR9401307 W FR 9401307W WO 9516139 A1 WO9516139 A1 WO 9516139A1
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WO
WIPO (PCT)
Prior art keywords
barrel
rivet
parts
thread
nut
Prior art date
Application number
PCT/FR1994/001307
Other languages
French (fr)
Inventor
Julien Bisognin
Original Assignee
Allibert Industrie
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Allibert Industrie filed Critical Allibert Industrie
Publication of WO1995016139A1 publication Critical patent/WO1995016139A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B19/00—Bolts without screw-thread; Pins, including deformable elements; Rivets
    • F16B19/04—Rivets; Spigots or the like fastened by riveting
    • F16B19/08—Hollow rivets; Multi-part rivets
    • F16B19/10—Hollow rivets; Multi-part rivets fastened by expanding mechanically
    • F16B19/1027—Multi-part rivets
    • F16B19/1036—Blind rivets
    • F16B19/1045—Blind rivets fastened by a pull - mandrel or the like
    • F16B19/1054—Blind rivets fastened by a pull - mandrel or the like the pull-mandrel or the like being frangible

Definitions

  • the invention relates to the general field of devices or accessories for fixing or connecting several parts.
  • the present applicant working very particularly with certain automobile manufacturers exposed to conventional problems of assembly of parts, and in particular of sheet metal parts, such as hollow panels of doors to be assembled with, for example, plastic side protection strips, the applicant has been led to reflect on these assembly problems, particularly when one of the parts to be assembled or maintained is inaccessible or difficult to access from one side.
  • the existing fixing systems present a certain number of problems which arise in particular when, the lateral protection being deteriorated, it is necessary to change it, and therefore remove the means which fixes it to the door panel. Neither disassembly nor reassembly after replacement of the protection is easy.
  • the new fixing device used to replace the replaced part may not always be the same as the original, since, at that time, the parts are no longer necessarily accessible from both sides (such as is for example the case of door panels which, if they are accessible from the interior of the door at the time of manufacture of the automobile, are no longer subsequently, at least easily).
  • the invention provides an improved fixing device, partially removable or removable, comprising a rivet, with a tubular barrel elongated along an axis and crossed by a rod, the barrel having an axial external thread suitable for receive a nut.
  • a rivet with a tubular barrel elongated along an axis and crossed by a rod, the barrel having an axial external thread suitable for receive a nut.
  • the barrel of the rivet may include means for locking in rotation, such as at least one flat, thus facilitating the operation in screwing or unscrewing. the nut.
  • At least one of these parts may present a rivet passage orifice which will be oblong in one direction, this direction preferably being that of the longitudinal axis of said part.
  • the invention also naturally relates to the assembly of such a device with the two parts to be joined, it being understood that these two parts must have two substantially coaxial orifices to allow the engagement of the rivet barrel, the associated nut blocking the assembly in position on one side, the blocking of the opposite side being provided by the bead which the barrel will present, after riveting.
  • the invention also relates to the process used to fix said parts together, this process being characterized in that:
  • the rivet of the invention is introduced through the two aforementioned orifices of the parts,
  • FIG. 1 is a general perspective view of the improved rivet of the invention, as manufactured, with its associated nut,
  • FIG. 3 shows in cross section, the zone of the orifice formed in the lower part of FIG. 2, along the line of section III-III,
  • FIG. 4 shows a subsequent fixing step in which the associated nut has been placed around the threaded part of the barrel of the rivet
  • an improved rivet identified as a whole 1, comprising a tubular rivet barrel 3, monobloc, of longitudinal axis 5, therefore having over its entire length L, an interior passage 7 (see FIG. 2) inside which is slid here a conventional rivet rod 9 having at one end an enlarged head 11.
  • the barrel 3 is essentially divided into two parts 13, 15 separated by a shoulder 17.
  • the first part 13, of larger section or outside diameter is itself “split" longitudinally into two sub-parts 19, 21 constituted respectively, from the free end of the barrel, by a substantially axial external thread and by a zone for blocking the barrel in rotation.
  • the blocking zone or base 21 appears externally as a cylindrical zone of circular section in which two diametrically opposite flats (23, 24) have been formed, only one of them, 23, appearing on Figure 1.
  • the barrel 3 therefore has a reduced external section (or diameter) materialized by the tubular part of circular section 15, against the terminal end 15a from which comes carry the head 11 of the rod 9.
  • the fixing device 1 also comprises, as shown in FIG. 1, a nut 25 (internally) threaded to come to be screwed on the external threads 19 of the barrel of the rivet, substantially along the axis 5.
  • the nut 25 could be made, for example, of stainless steel, the rivet 3 could be made of aluminum or any other equivalent material suitable for making a rivet. A plastic nut may also be suitable.
  • the two parts 27, 29, arranged here one against the other each have an orifice, respectively 31 and 33.
  • These two orifices extend coaxially, in such a way that the barrel 3 can be slid through them, as shown in FIG. 2.
  • the section of the orifice 33 of the part 29 is greater than that of the orifice 31 of the part 27, so that the barrel 3 of the rivet can come to bear by its shoulder 17 against the peripheral shoulder 35 of the parts formed by the variation in section of the orifices.
  • the barrel 3 opens out of the orifice 31 on the side of its terminal part 15, while it extends beyond the orifice 33, on the side of its thread 19.
  • the orifice 33 has a complementary shape, that is to say for example two opposite flats 33a, 33b, as shown in a slightly enlarged local view in FIG. 3
  • the orifice 33 has a complementary shape, that is to say for example two opposite flats 33a, 33b, as shown in a slightly enlarged local view in FIG. 3
  • the nut 25 is in place, screwed onto the threads 19 of the barrel 3, the introduction of the nut being able either to be done before or after introduction of the barrel 3 through the orifices 31, 33 of the parts .

Abstract

A fastening system including a rivet having a tubular shank (3) with a stem extending therethrough and a male thread (19) engageable with a nut (25). The fastening system is particularly suitable for releasably assembling two parts (27, 29) to be assembled having two coaxial openings (31, 33). The rivet shank is flattened at one end to form a flange (39) while its other end is fitted with the screw-off nut.

Description

"Dispositif de fixation utilisant un rivet et un écrou, assemblage utilisant ce dispositif et procédé de fixation correspondant""Fixing device using a rivet and a nut, assembly using this device and corresponding fixing method"
L'invention se rapporte au domaine général des dispositifs ou accessoires de fixation ou de liaison entre plusieurs pièces. Le présent demandeur travaillant tout particulièrement avec certains constructeurs automobiles exposés à des problèmes classiques d'assemblage de pièces, et notamment de pièces de tôlerie, telles que des panneaux creux de portes à assembler avec, par exemple, des baguettes de protection latérale en plastique, le demandeur a été amené à réfléchir sur ces problèmes d'assemblage, tout particulièrement lorsque l'une des pièces à assembler ou à maintenir est inaccessible ou difficilement accessible d'un côté. Si l'on retient l'exemple de la fixation d'une baguette sur un panneau de porte, on note ainsi que les systèmes de fixation existants présentent un certain nombre de problèmes qui surviennent en particulier lorsque, la protection latérale étant détériorée, il faut la changer, et donc retirer les moyens qui la fixe au panneau de porte. Ni le démontage, ni le remontage après remplacement de la protection, ne sont aisés. On risque en outre souvent d'abîmer le panneau de porte, voire de faire tomber une partie au moins du moyen de fixation d'origine à l'intérieur de ce panneau, ce qui peut générer des bruits et autres désagréments.The invention relates to the general field of devices or accessories for fixing or connecting several parts. The present applicant working very particularly with certain automobile manufacturers exposed to conventional problems of assembly of parts, and in particular of sheet metal parts, such as hollow panels of doors to be assembled with, for example, plastic side protection strips, the applicant has been led to reflect on these assembly problems, particularly when one of the parts to be assembled or maintained is inaccessible or difficult to access from one side. If we retain the example of the fixing of a strip on a door panel, it is thus noted that the existing fixing systems present a certain number of problems which arise in particular when, the lateral protection being deteriorated, it is necessary to change it, and therefore remove the means which fixes it to the door panel. Neither disassembly nor reassembly after replacement of the protection is easy. In addition, there is often a risk of damaging the door panel, or even dropping at least part of the original fixing means inside this panel, which can generate noise and other inconveniences.
De surcroît, le nouveau dispositif de fixation utilisé pour remettre en place la pièce remplacée ne peut pas toujours être le même que celui d'origine, dans la mesure où, à ce moment, les pièces ne sont plus nécessairement accessibles des deux côtés (tel est par exemple le cas des panneaux de porte qui, s'ils sont accessibles depuis 1 ' intérieur de la porte au moment de la fabrication de l'automobile, ne le sont plus ultérieurement, du moins aisément) .In addition, the new fixing device used to replace the replaced part may not always be the same as the original, since, at that time, the parts are no longer necessarily accessible from both sides (such as is for example the case of door panels which, if they are accessible from the interior of the door at the time of manufacture of the automobile, are no longer subsequently, at least easily).
C'est dans ce contexte que l'invention propose un dispositif de fixation perfectionné, en partie démontable ou amovible, comprenant un rivet, avec un fût tubulaire allongé suivant un axe et traversé par une tige, le fût présentant un filetage extérieur axial propre à recevoir un écrou. Ainsi, une fois le fût riveté sur sa pièce de réception (telle par exemple que le panneau de porte) , il suffira, au moment où l'on souhaitera désassembler les deux pièces, de retirer l'écrou, pour le replacer ensuite, une fois la pièce remplacée. Selon une caractéristique complémentaire de l'invention, pour faciliter les opérations de montage et de démontage, le fût du rivet pourra comporter des moyens de blocage en rotation, tels qu'au moins un méplat, facilitant ainsi la manoeuvre en vissage ou en dévissage de l'écrou. Et en particulier dans le cas où les deux pièces à réunir ne présenteront pas le même coefficient de dilatation thermique (pièces respectivement métallique et plastique par exemple), l'une au moins de ces pièces (de préférence celle ayant le plus fort coefficient) pourra présenter un orifice de passage du rivet qui sera oblong dans une direction, cette direction étant de préférence celle de l'axe longitudinal de ladite pièce.It is in this context that the invention provides an improved fixing device, partially removable or removable, comprising a rivet, with a tubular barrel elongated along an axis and crossed by a rod, the barrel having an axial external thread suitable for receive a nut. Thus, once the barrel has been riveted to its receiving part (such as for example the door panel), it will suffice, when it is desired to disassemble the two parts, to remove the nut, to then replace it, a once the part is replaced. According to an additional characteristic of the invention, to facilitate assembly and disassembly operations, the barrel of the rivet may include means for locking in rotation, such as at least one flat, thus facilitating the operation in screwing or unscrewing. the nut. And in particular in the case where the two parts to be joined will not have the same coefficient of thermal expansion (respectively metallic and plastic parts for example), at least one of these parts (preferably the one having the highest coefficient) may present a rivet passage orifice which will be oblong in one direction, this direction preferably being that of the longitudinal axis of said part.
Au delà d'un tel dispositif de fixation, l'invention se rapporte également tout naturellement à l'assemblage d'un tel dispositif avec les deux pièces à réunir, étant entendu que ces deux pièces devront présenter deux orifices sensiblement coaxiaux pour permettre l'engagement du fût de rivet, l'écrou associé venant bloquer l'ensemble en position d'un côté, le blocage du côté opposé étant assuré par le bourrelet que présentera le fût, après rivetage. Outre cela, l'invention se rapporte aussi au procédé utilisé pour fixer entre elles lesdites pièces, ce procédé se caractérisant en ce que :Beyond such a fixing device, the invention also naturally relates to the assembly of such a device with the two parts to be joined, it being understood that these two parts must have two substantially coaxial orifices to allow the engagement of the rivet barrel, the associated nut blocking the assembly in position on one side, the blocking of the opposite side being provided by the bead which the barrel will present, after riveting. In addition to this, the invention also relates to the process used to fix said parts together, this process being characterized in that:
- on introduit à travers les deux orifices précitées des pièces, le rivet de l'invention,the rivet of the invention is introduced through the two aforementioned orifices of the parts,
- on visse un écrou sur le filetage dont le fût du rivet est équipé,- a nut is screwed onto the thread with which the barrel of the rivet is fitted,
- puis on écrase, du côté opposé au filetage, le fût de ce rivet pour qu'il forme le bourrelet prévu de retenue.- Then we crush, on the side opposite to the thread, the barrel of this rivet so that it forms the planned retaining bead.
Bien entendu les deux premières étapes peuvent être interverties.Of course the first two steps can be reversed.
De cette manière, il apparaît clairement que lorsque l'on souhaitera, notamment en après-vente, remplacer par exemple une baguette de protection, il suffira, après avoir éventuellement enlevé un capuchon étanche de protection de l'écrou, de dévisser cet écrou et de retirer tout à fait aisément la baguette, le fût du rivet ne risquant pas de tomber ni à 1 ' intérieur ni à l'extérieur du panneau de porte, puisqu'il est retenu d'un côté par le bourrelet précité et, que de l'autre, une caractéristique complémentaire de l'invention prévoit qu' à un endroit donné de sa longueur, le fût du rivet présentera avantageusement un épaulement, visant à restreindre sa section du côté de l'extrémité de son fût où est formé ledit bourrelet.In this way, it becomes clear that when it is desired, in particular in after-sales, to replace for example a protective rod, it will suffice, after having possibly removed a waterproof cap for protecting the nut, to unscrew this nut and to remove the rod quite easily, the barrel of the rivet not likely to fall either inside or outside the door panel, since it is retained on one side by the aforementioned bead and, than the other, a complementary characteristic of the invention provides that at a given place of its length, the barrel of the rivet will advantageously have a shoulder, aimed at restricting its section on the side of the end of its barrel where said bead is formed .
D'autres caractéristiques et avantages de 1 •invention apparaîtront encore de la description qui va suivre faite en référence aux dessins annexés donnés uniquement à titre d'exemple non limitatif et dans lesquelsOther characteristics and advantages of the invention will appear from the description which follows, given with reference to the appended drawings given solely by way of nonlimiting example and in which
- la figure 1 est une vue générale en perspective du rivet perfectionné de l'invention, tel que fabriqué, avec son écrou associé,FIG. 1 is a general perspective view of the improved rivet of the invention, as manufactured, with its associated nut,
- la figure 2 montre le même rivet prêt à assembler deux pièces, - la figure 3 montre en coupe transversale, la zone de l'orifice ménagé dans la pièce inférieure de la figure 2, suivant la ligne de coupe III-III,- Figure 2 shows the same rivet ready to assemble two parts, FIG. 3 shows in cross section, the zone of the orifice formed in the lower part of FIG. 2, along the line of section III-III,
- la figure 4 présente une étape ultérieure de fixation dans laquelle 1 'écrou associé a été mis en place autour de la partie filetée du fût du rivet,FIG. 4 shows a subsequent fixing step in which the associated nut has been placed around the threaded part of the barrel of the rivet,
- et la figure 5 présente les deux pièces assemblées, après rivetage.- And Figure 5 shows the two parts assembled, after riveting.
Si l'on se reporte tout d'abord à la figure 1, on voit ainsi représenté un rivet perfectionné repéré dans son ensemble 1, comprenant un fût tubulaire de rivet 3, monobloc, d'axe longitudinal 5, présentant donc sur toute sa longueur L, un passage intérieur 7 (voir figure 2) à l'intérieur duquel est ici glissé une tige classique de rivet 9 présentant à une extrémité une tête élargie 11.If we refer first to Figure 1, we thus see shown an improved rivet identified as a whole 1, comprising a tubular rivet barrel 3, monobloc, of longitudinal axis 5, therefore having over its entire length L, an interior passage 7 (see FIG. 2) inside which is slid here a conventional rivet rod 9 having at one end an enlarged head 11.
Sur sa longueur L, le fût 3 est divisé essentiellement en deux parties 13, 15 séparées par un épaulement 17. La première partie 13, de plus large section ou diamètre extérieur, est elle même "scindée" longitudinalement en deux sous-parties 19, 21 constituées respectivement, à partir de l'extrémité libre du fût, par un filetage extérieur sensiblement axial et par une zone de blocage en rotation du fût.Over its length L, the barrel 3 is essentially divided into two parts 13, 15 separated by a shoulder 17. The first part 13, of larger section or outside diameter, is itself "split" longitudinally into two sub-parts 19, 21 constituted respectively, from the free end of the barrel, by a substantially axial external thread and by a zone for blocking the barrel in rotation.
En l'espèce, la zone de blocage ou embase 21 se présente extérieurement comme une zone cylindrique de section circulaire dans laquelle ont été ménagés deux méplats (23, 24) diamétrialement opposés, seul l'un d'entre eux, 23, apparaissant sur la figure 1.In this case, the blocking zone or base 21 appears externally as a cylindrical zone of circular section in which two diametrically opposite flats (23, 24) have been formed, only one of them, 23, appearing on Figure 1.
Au delà de l'épaulement périphérique 17, le fût 3 présente donc une section (ou diamètre) extérieur(e) réduit(e) matérialisé(e) par la partie tubulaire de section circulaire 15, contre l'extrémité terminale 15a de laquelle vient porter la tête 11 de la tige 9.Beyond the peripheral shoulder 17, the barrel 3 therefore has a reduced external section (or diameter) materialized by the tubular part of circular section 15, against the terminal end 15a from which comes carry the head 11 of the rod 9.
Outre le rivet perfectionné 3, le dispositif de fixation 1 comprend également, comme le montre la figure 1, un écrou 25 (intérieurement) taraudé pour venir se visser sur les filets extérieurs 19 du fût du rivet, sensiblement suivant l'axe 5.In addition to the improved rivet 3, the fixing device 1 also comprises, as shown in FIG. 1, a nut 25 (internally) threaded to come to be screwed on the external threads 19 of the barrel of the rivet, substantially along the axis 5.
Tandis que 1 *écrou 25 pourrait être réalisé par exemple en acier inoxydable, le rivet 3 pourra être fabriqué en aluminium ou tout autre matière équivalente appropriée pour la réalisation d'un rivet. Un écrou plastique pourrait également convenir.While the nut 25 could be made, for example, of stainless steel, the rivet 3 could be made of aluminum or any other equivalent material suitable for making a rivet. A plastic nut may also be suitable.
Reportons-nous maintenant aux figures suivantes pour décrire le principe d'utilisation du dispositif d'assemblage de l'invention, dans le cadre de la fixation, a priori amovible, entre elles de deux pièces 27, 29, telles par exemple respectivement qu'un panneau de porte en tôle et qu'une baguette plastique de protection et de décoration latérale pouvant présenter un axe longitudinal 29a (figure 3) .Let us now refer to the following figures to describe the principle of use of the assembly device of the invention, within the framework of the fixing, a priori removable, between them of two parts 27, 29, such as for example respectively that a sheet metal door panel and a plastic protective and side decoration strip which may have a longitudinal axis 29a (FIG. 3).
Pour recevoir le rivet 1, et tout particulièrement son fût 3, les deux pièces 27, 29, disposées ici l'une contre l'autre présentent chacune un orifice, respectivement 31 et 33. Ces deux orifices s'étendent coaxialement, de telle manière que puisse être glissé à travers eux le fût 3, comme le montre la figure 2. On remarquera que la section de l'orifice 33 de la pièce 29 est supérieure à celle de l'orifice 31 de la pièce 27, de telle manière que le fût 3 du rivet puisse venir s'appuyer par son épaulement 17 contre l'épaulement périphérique 35 des pièces constitué par la variation de section des orifices.To receive the rivet 1, and more particularly its barrel 3, the two parts 27, 29, arranged here one against the other each have an orifice, respectively 31 and 33. These two orifices extend coaxially, in such a way that the barrel 3 can be slid through them, as shown in FIG. 2. It will be noted that the section of the orifice 33 of the part 29 is greater than that of the orifice 31 of the part 27, so that the barrel 3 of the rivet can come to bear by its shoulder 17 against the peripheral shoulder 35 of the parts formed by the variation in section of the orifices.
Ainsi en place, le fût 3 débouche hors de l'orifice 31 du côté de sa partie terminale 15, tandis qu'il s'étend au delà de l'orifice 33, du côté de son filetage 19.Thus in place, the barrel 3 opens out of the orifice 31 on the side of its terminal part 15, while it extends beyond the orifice 33, on the side of its thread 19.
Pour rendre efficaces les moyens de blocage en rotation 23, on notera que l'orifice 33 présente une forme complémentaire, c'est-à-dire par exemple deux méplats opposés 33a, 33b, comme le montre en vue locale légèrement agrandie la figure 3. Ainsi, une fois le fût de rivet en place dans les orifices 31, 33, son blocage en rotation sera tout à fait assuré, facilitant ainsi la mise en place, ou le retrait, de 1 'écrou 25. Pour prendre en compte les problèmes de dilatations thermiques différentiels et les écarts dimensionnels, en particulier entre deux pièces 27, 29 réalisées en deux matières distinctes (métal et plastique par exemple, ou deux plastiques différents) , on pourra en outre prévoir de donner à l'un au moins des orifices 31, 33 une section allongée dans au moins une direction. En l'espèce, le trou 33 présente sur la figure 3 une forme oblongue de plus grande longueur L , suivant l'axe longitudinal 29a de la pièce 29 (direction privilégiée de dilatation) .To make the rotation locking means 23 effective, it will be noted that the orifice 33 has a complementary shape, that is to say for example two opposite flats 33a, 33b, as shown in a slightly enlarged local view in FIG. 3 Thus, once the rivet barrel is in place in the orifices 31, 33, its blocking in rotation will be fully assured, thus facilitating the establishment, or removal, of the nut 25. To take into account the problems of differential thermal expansion and dimensional differences, in particular between two parts 27, 29 made of two materials distinct (metal and plastic, for example, or two different plastics), provision may also be made to give at least one of the orifices 31, 33 an elongated section in at least one direction. In this case, the hole 33 has in Figure 3 an oblong shape of greater length L, along the longitudinal axis 29a of the part 29 (preferred direction of expansion).
Sur la figure 4, 1 'écrou 25 est en place, vissé sur les filets 19 du fût 3, la mise en place de l'écrou pouvant indifféremment être faite avant ou après introduction du fût 3 à travers les orifices 31, 33 des pièces.In FIG. 4, the nut 25 is in place, screwed onto the threads 19 of the barrel 3, the introduction of the nut being able either to be done before or after introduction of the barrel 3 through the orifices 31, 33 of the parts .
Pour réaliser l'assemblage des deux pièces 27, 29, il suffit alors d'utiliser la machine à riveter appropriée pour, de manière en soi tout à fait habituelle, venir classiquement tirer sur la tige 9 dans le sens de la flèche 37 de la figure 4, ce qui provoque d'une part la déformation de la partie terminale de la zone 15 du fût qui s'élargit en un bourrelet 39 (voir figure 5) et provoque, paralèllement, la rupture de la tige 9 en deux parties, éventuellement à l'endroit d'une zone de striction 41 (ou zone de faiblesse pré-définie) ayant pu être prévue (voir figure 4) .To assemble the two parts 27, 29, it is sufficient to use the appropriate riveting machine to, in itself quite usual, conventionally come to pull the rod 9 in the direction of arrow 37 of the FIG. 4, which causes on the one hand the deformation of the terminal part of the zone 15 of the barrel which widens into a bead 39 (see FIG. 5) and causes, at the same time, the rupture of the rod 9 in two parts, possibly at the location of a necking zone 41 (or zone of pre-defined weakness) which could have been provided (see FIG. 4).
Une fois le bourrelet 39 réalisé, les deux pièces 27, 29 sont assemblées, étant maintenues entre le bourrelet et l'écrou 25.Once the bead 39 has been produced, the two parts 27, 29 are assembled, being held between the bead and the nut 25.
Il est à noter que, lors du rivetage, les effort excercés sur le fût 3 auront eu tendance à écraser légèrement les filets, ceci étant favorable à un bon maintien de l'écrou 25 déjà en place (sans toutefois empêcher son dévissage) . Lorsque, le moment venu, il pourra apparaître utile par exemple de remplacer la pièce 29 après que celle- ci aura été détériorée, il suffira alors de dévisser 1 'écrou 25 pour retirer ladite pièce, le fût 3 ne risquant pas de tomber, puisqu'il est maintenu d'un côté par le bourrelet 39, et de l'autre par son épaulement 17, 1 'écrou 25 (ou un écrou de substitution par exemple équipé d'un frein incorporé ; écrou auto-freiné) étant revissé après remplacement. Bien entendu, différentes variantes de réalisation de l'invention pourraient être imaginées.It should be noted that, during riveting, the forces exerted on the barrel 3 will have a tendency to slightly crush the threads, this being favorable to good retention of the nut 25 already in place (without however preventing its unscrewing). When, when the time comes, it may appear useful for example to replace the part 29 after it has been deteriorated, it will then suffice to unscrew the nut 25 to remove the said part, the barrel 3 not being liable to fall, since 'It is held on one side by the bead 39, and on the other by its shoulder 17, 1' nut 25 (or a substitution nut for example equipped with a built-in brake; self-locking nut) being screwed back after replacement. Of course, different embodiments of the invention could be imagined.
Ainsi, plutôt que de réaliser deux méplats (23, 24) sur le fût du rivet, avec une forme complémentaire à l'endroit du trou 33, on pourrait imaginer par exemple de donner à la zone 21 du fût une forme de section elliptique, ou encore déplacer la zone de blocage en rotation sur la partie 15 du fût (en deçà du bourrelet) avec une forme complémentaire à l'endroit de l'orifice 31, ou de la pièce 27. Thus, rather than making two flats (23, 24) on the barrel of the rivet, with a complementary shape at the location of the hole 33, one could imagine, for example, to give the zone 21 of the barrel a shape of elliptical section, or else move the rotation blocking zone on the part 15 of the barrel (below the bead) with a complementary shape at the location of the orifice 31, or of the part 27.

Claims

REVENDICATIONS
1. Dispositif de fixation comprenant un rivet (1) avec un fût tubulaire (3) allongé suivant un axe (5) et traversé par une tige (9) , ledit fût présentant un filetage (19) extérieur axial propre à recevoir un écrou (25) .1. Fastening device comprising a rivet (1) with a tubular barrel (3) elongated along an axis (5) and traversed by a rod (9), said barrel having an axial external thread (19) suitable for receiving a nut ( 25).
2. Dispositif selon la revendication 1, caractérisé en ce que le fût (3) du rivet porte des moyens (23) de blocage en rotation du fût.2. Device according to claim 1, characterized in that the barrel (3) of the rivet carries means (23) for locking in rotation of the barrel.
3. Dispositif selon la revendication 1 ou la revendication 2, caractérisé en ce que le fût (3) présente, sur une partie (13) de sa longueur, un premier diamètre extérieur, et, sur une seconde partie (15) de cette même longueur, un second diamètre extérieur, réduit par rapport au premier diamètre, avec un épaulement (17) entre les deux, le filetage (19) étant ménagé sur ladite partie (13) présentant le premier diamètre.3. Device according to claim 1 or claim 2, characterized in that the barrel (3) has, on a part (13) of its length, a first outer diameter, and, on a second part (15) of the same length, a second outer diameter, reduced relative to the first diameter, with a shoulder (17) in between, the thread (19) being formed on said part (13) having the first diameter.
4. Dispositif selon la revendication 2 et la revendication 3, caractérisé en ce que le filetage (19) du fût s'interrompt à une certaine distance dudit épaulement, les moyens (23) de blocage en rotation du fût (3) étant disposés entre la fin du filetage et l'épaulement (17).4. Device according to claim 2 and claim 3, characterized in that the thread (19) of the barrel is interrupted at a certain distance from said shoulder, the means (23) for locking in rotation of the barrel (3) being arranged between the end of the thread and the shoulder (17).
5. Dispositif selon l'une quelconque des revendications 2 à 4, caractérisé en ce que les moyens de blocage comprennent au moins un méplat (23) . 5. Device according to any one of claims 2 to 4, characterized in that the locking means comprise at least one flat (23).
6. Assemblage démontable comprenant :6. Removable assembly comprising:
- une première et une deuxième pièces (27, 29) à fixer ensemble de façon démontable, lesdites pièces présentant deux orifices sensiblement coaxiaux (31, 33),- a first and a second part (27, 29) to be fixed together in a removable manner, said parts having two substantially coaxial orifices (31, 33),
- un fût (3) tubulaire de rivet engagé sensiblement coaxiale ent à travers lesdits orifices des deux pièces, ledit fût étant écrasé à une extémité pour présenter un bourrelet (39), tandis qu'à l'extrémité opposé il présente un filetage (19) ,- a tubular barrel (3) engaged substantially coaxially between said holes of the two parts, said barrel being crushed at one end to present a bead (39), while at the opposite end it has a thread (19 ),
- et un écrou (25) vissé sur ledit filetage du fût (3) de rivet, pour fixer ensemble lesdites pièces (27,- and a nut (25) screwed onto said thread of the barrel (3) of the rivet, to fix together said parts (27,
29) entre l'écrou et le bourrelet dudit fût. 29) between the nut and the bead of said barrel.
7. Assemblage selon la revendication 6, caractérisé en ce que le fût (3) porte des moyens (23, 24) de blocage en rotation coopérant avec des moyens complémentaires (33a, 33b) de l'orifice (33) de l'une au moins des pièces, pour bloquer en rotation le fût dans cet orifice.7. Assembly according to claim 6, characterized in that the barrel (3) carries means (23, 24) for locking in rotation cooperating with complementary means (33a, 33b) of the orifice (33) of one at least parts, to block the barrel in rotation in this orifice.
8. Assemblage selon la revendication 6 ou la revendication 7, caractérisé en ce que l'orifice (31) de la première pièce (27) est de section inférieure à celui (33) de la seconde pièce (29) , le fût (3) du rivet présentant un épaulement (17) à l'endroit de l'orifice (33) de la seconde pièce (29) , élargissant sa section sur la partie de sa longueur qui porte le filetage (19) .8. Assembly according to claim 6 or claim 7, characterized in that the orifice (31) of the first part (27) is of smaller section than that (33) of the second part (29), the barrel (3 ) of the rivet having a shoulder (17) at the location of the orifice (33) of the second part (29), widening its section over the part of its length which carries the thread (19).
9. Assemblage selon l'une quelconque des revendications 6 à 8, caractérisé en ce que :9. Assembly according to any one of claims 6 to 8, characterized in that:
- lesdites première et seconde pièces (27, 29) présentent des caractéristiques de dilatation thermique différentes,- said first and second parts (27, 29) have different thermal expansion characteristics,
- l'une au moins de ces pièces (29) est allongée suivant un axe longitudinal (29a) ,at least one of these parts (29) is elongated along a longitudinal axis (29a),
- et ledit orifice (33) formé à travers cette pièce est oblong, en présentant sa plus grande dimension- And said orifice (33) formed through this piece is oblong, having its largest dimension
(L ) suivant l'axe longitudinal (29a) de ladite pièce (29).(L) along the longitudinal axis (29a) of said part (29).
10. Procédé pour fixer entre elles deux pièces (27, 29) présentant deux orifices (31, 33) sensiblement coaxiaux,dans lequel :10. Method for fixing between them two parts (27, 29) having two orifices (31, 33) substantially coaxial, in which:
- on introduit à travers lesdits orifices (31, 33) des pièces, un rivet (1) selon l'une quelconque des revendications 1 à 5, avant de visser, ou après avoir vissé, un écrou (25) sur ledit filetage (19) du fût (3) de ce rivet,- Is introduced through said holes (31, 33) of the parts, a rivet (1) according to any one of claims 1 to 5, before screwing, or after having screwed, a nut (25) on said thread (19 ) of the barrel (3) of this rivet,
- puis on écrase, du côté opposé au filetage (19), le fût (3) dudit rivet pour qu'il forme un bourrelet (39). - Then, on the side opposite the thread (19), the barrel (3) of said rivet is crushed so that it forms a bead (39).
PCT/FR1994/001307 1993-12-08 1994-11-08 Fastening system using a rivet and a nut, assembly using said device, and fastening method WO1995016139A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9314742A FR2713721B1 (en) 1993-12-08 1993-12-08 Fixing device using a rivet and a nut, assembly using this device and corresponding fixing method.
FR93/14742 1993-12-08

Publications (1)

Publication Number Publication Date
WO1995016139A1 true WO1995016139A1 (en) 1995-06-15

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Application Number Title Priority Date Filing Date
PCT/FR1994/001307 WO1995016139A1 (en) 1993-12-08 1994-11-08 Fastening system using a rivet and a nut, assembly using said device, and fastening method

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FR (1) FR2713721B1 (en)
WO (1) WO1995016139A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2871860A1 (en) * 2004-06-17 2005-12-23 Peugeot Citroen Automobiles Sa Detachable fixing device for assembling number plate of motor vehicle, has axle that traverses two parts, and maintenance unit cooperating with axle, where unit has insert having outer threading that is intended to cooperate with nut
RU2463491C2 (en) * 2007-05-23 2012-10-10 ЭйчЭн3Ди Холдинг Апс Mounting/assembly element to assemble items, in particular, overlapping plates and/or composite elements

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29919502U1 (en) * 1999-11-05 2001-03-29 Meritor Automotive Gmbh Blind rivet
CN104776093B (en) * 2015-04-18 2017-02-08 金丽秋 Furniture board connecting rod structure for intelligent furniture

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4293263A (en) * 1979-11-26 1981-10-06 Zankl Robert H Screw lock rivet
US4560312A (en) * 1980-08-29 1985-12-24 Grady James H Stud and screw rivet fastener
EP0537967A1 (en) * 1991-10-18 1993-04-21 Ford Motor Company Limited A headed stud
FR2685404A1 (en) * 1991-12-20 1993-06-25 Esswein Sa Notch rivet for joining plates

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4293263A (en) * 1979-11-26 1981-10-06 Zankl Robert H Screw lock rivet
US4560312A (en) * 1980-08-29 1985-12-24 Grady James H Stud and screw rivet fastener
EP0537967A1 (en) * 1991-10-18 1993-04-21 Ford Motor Company Limited A headed stud
FR2685404A1 (en) * 1991-12-20 1993-06-25 Esswein Sa Notch rivet for joining plates

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2871860A1 (en) * 2004-06-17 2005-12-23 Peugeot Citroen Automobiles Sa Detachable fixing device for assembling number plate of motor vehicle, has axle that traverses two parts, and maintenance unit cooperating with axle, where unit has insert having outer threading that is intended to cooperate with nut
RU2463491C2 (en) * 2007-05-23 2012-10-10 ЭйчЭн3Ди Холдинг Апс Mounting/assembly element to assemble items, in particular, overlapping plates and/or composite elements

Also Published As

Publication number Publication date
FR2713721B1 (en) 1996-02-02
FR2713721A1 (en) 1995-06-16

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