FR2598189A1 - Fastening element, nut or stud, to be crimped - Google Patents
Fastening element, nut or stud, to be crimped Download PDFInfo
- Publication number
- FR2598189A1 FR2598189A1 FR8606324A FR8606324A FR2598189A1 FR 2598189 A1 FR2598189 A1 FR 2598189A1 FR 8606324 A FR8606324 A FR 8606324A FR 8606324 A FR8606324 A FR 8606324A FR 2598189 A1 FR2598189 A1 FR 2598189A1
- Authority
- FR
- France
- Prior art keywords
- sheet
- projections
- shoulder
- nut
- fastening element
- 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.)
- Granted
Links
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
- F16B37/00—Nuts or like thread-engaging members
- F16B37/04—Devices for fastening nuts to surfaces, e.g. sheets, plates
- F16B37/06—Devices for fastening nuts to surfaces, e.g. sheets, plates by means of welding or riveting
- F16B37/062—Devices for fastening nuts to surfaces, e.g. sheets, plates by means of welding or riveting by means of riveting
- F16B37/068—Devices for fastening nuts to surfaces, e.g. sheets, plates by means of welding or riveting by means of riveting by deforming the material of the support, e.g. the sheet or plate
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Connection Of Plates (AREA)
Abstract
Description
ELEMENT DE FIXATION, ECROU OU GOUJON, A SERTIR
La présente invention concerne un élément de fixation, écrou ou goujon, à sertir.FIXING ELEMENT, NUT OR STUD, TO BE CRIMPED
The present invention relates to a fixing element, nut or stud, to be crimped.
L'utilisation d'écrous ou de goujons à sertir pour la fixation d'éléments rapportés sur des tôles est tres répandue dans divers secteurs, notamment l'automobile car elle permet des gains de temps appréciables pour l'assemblage. The use of nuts or studs to crimp for the attachment of added elements on sheets is very widespread in various sectors, in particular the automobile because it allows appreciable time savings for assembly.
De manière typique, ces écrous comportent un embout engagé dans un perçage de la tôle et serti sur la tôle. Le perçage et l'embout ont une forme carrée, ou rectangulaire, afin d'empêcher la rotation de 11 écrou. Typically, these nuts have a tip engaged in a hole in the sheet and crimped onto the sheet. The hole and the endpiece have a square, or rectangular, shape in order to prevent the rotation of 11 nuts.
Cependant, dans ces solutions connues, le sertissage n'est assuré que sur deux côtés opposés de la forme carrée ou rectangulaire, ce qui produit des déformations de la tôle sur les deux autres côtés et par consequent un manque de précision dans le positionnement de l'écrou. De plus, la concentration d'efforts dans la tôle au voisinage des angles du perçage engendre des ruptures de la tôle préjudiciables à la bonne tenue de l'écrou.However, in these known solutions, crimping is only ensured on two opposite sides of the square or rectangular shape, which produces deformations of the sheet on the other two sides and consequently a lack of precision in the positioning of the 'nut. In addition, the concentration of forces in the sheet in the vicinity of the angles of the drilling generates ruptures of the sheet detrimental to the good behavior of the nut.
Enfin, l'obligation de conférer à l'embout et au perçage une forme carrée, ou rectangulaire, impose des opérations de fabrication supplémentaires, sans compter que l'écrou doit être correctement orienté vis-à-vis du perçage au moment du sertissage. Finally, the obligation to give the end piece and the hole a square or rectangular shape requires additional manufacturing operations, not to mention that the nut must be correctly oriented with respect to the hole at the time of crimping.
Dans le but de pallier ces inconvénients, la présente invention propose un élément de fixation, goujon ou écrou, à sertir, comprenant un embout destiné à être engagé dans un perçage d'une tôle, caractérisé en ce que ledit embout est formé d'un fût cylindrique, destiné à être engagé dans ledit perçage, et d'une tête élargie dans le prolongement dudit fût et présentant un épaulement plan destiné à s' appliquer contre ladite tôle, ledit fût présentant une gorge, sur toute sa périphérie et au pied dudit épaulement, dont la largeur est sensiblement égale à l'épaisseur de la tale, et ladite tête comportant plusieurs saillies réparties sur ledit épaulement, d'une hauteur inférieure à l'épaisseur de la tole, le volume global desdites saillies étant sensiblement égal au volume de ladite gorge. In order to overcome these drawbacks, the present invention provides a fixing element, stud or nut, for crimping, comprising a tip intended to be engaged in a hole in a sheet metal, characterized in that said tip is formed of a cylindrical barrel, intended to be engaged in said drilling, and an enlarged head in the extension of said barrel and having a flat shoulder intended to be applied against said sheet, said barrel having a groove, over its entire periphery and at the foot of said shoulder, whose width is substantially equal to the thickness of the sheet, and said head comprising several projections distributed over said shoulder, of a height less than the thickness of the sheet, the overall volume of said projections being substantially equal to the volume from said throat.
Ainsi, grâce à l'invention, on peut prévoir des perçages circulaires dans la tale et il n'est pas besoin d'orienter l'élément à sertir par rapport à la tôle. Thus, thanks to the invention, it is possible to provide circular holes in the plate and there is no need to orient the element to be crimped relative to the sheet.
Par ailleurs, les saillies dépassant de l'épaulement viennent pénétrer la tole lors du sertissage, ce qui assure un verrouillage positif de l'élément et l'empêche de tourner par rapport à la tôle bien que son fût ait une forme cylindrique. Furthermore, the protrusions protruding from the shoulder penetrate the sheet during crimping, which ensures positive locking of the element and prevents it from turning relative to the sheet although its barrel has a cylindrical shape.
Enfin, le volume de matière de la tôle qui est déplacé par la pénétration des saillies est repousé vers l'intérieur de la gorge de l'écrou en remplissant celle-ci en totalité. On obtient donc un sertissage sur toute la périphérie de l'écrou, et exempt de tronçon non sertis ou encore d'angles qui risqueraient de fragiliser la tôle. De plus, le déplacement de matière, ou fluage, provoque un important crouissage du métal de la tôle, ce qui augmente sa résistance mécanique dans la zone de sertissage. Finally, the volume of material of the sheet which is displaced by the penetration of the projections is pushed back towards the inside of the groove of the nut by filling the latter completely. A crimping is therefore obtained over the entire periphery of the nut, and free of non-crimped sections or of angles which could weaken the sheet. In addition, the displacement of material, or creep, causes significant rusting of the metal of the sheet, which increases its mechanical resistance in the crimping area.
Les détails et avantages de l'invention apparaîtront clairement à la lecture de la description qui va suivre, en se référant aux dessins annexés dans lesquels
- la figure 1 est une vue en perspective d'un élément de fixation (écrou) à sertir conforme à la présente invention,
- les figures 2 et 3 sont des vues en coupe illustrant deux phases du sertissage de l'écrou sur la tôle, et
- la figure 4 est une vue en coupe d'un élément de fixation réalisé sous forme de goujon.The details and advantages of the invention will appear clearly on reading the description which follows, with reference to the accompanying drawings in which
FIG. 1 is a perspective view of a fixing element (nut) to be crimped according to the present invention,
FIGS. 2 and 3 are sectional views illustrating two phases of the crimping of the nut on the sheet, and
- Figure 4 is a sectional view of a fastening element produced in the form of a stud.
L'élément de fixation désigné sur les figures par la référence 10 se compose d'un fût cylindrique 12 et d'une tête 14, dans son prolongement. The fixing element designated in the figures by the reference 10 consists of a cylindrical barrel 12 and a head 14, in its extension.
La tête et le fût sont traversés par un trou taraudé 16 lorsqu'il s'agit d'un écrou, comme c'est le cas aux figures 1 à 3.The head and the barrel are crossed by a tapped hole 16 when it is a nut, as is the case in FIGS. 1 to 3.
La tête est élargie par rapport au fût et présente un épaulement essentiellement plan 18. Le fût comporte sur tout son pourtour et au pied de l'épaulement 18 une gorge 20 dont la largeur est sensiblement égale à l'épaisseur de la tôle sur laquelle on désire sertir l'élément 10, comme on le verra lors de la description des figures 2 et 3. The head is enlarged relative to the barrel and has an essentially planar shoulder 18. The barrel has around its entire periphery and at the foot of the shoulder 18 a groove 20 whose width is substantially equal to the thickness of the sheet on which wishes to crimp the element 10, as will be seen in the description of FIGS. 2 and 3.
De l'épaulement 18 se projettent plusieurs saillies 22, réparties autour du fût 12. Pour des raisons qui seront explicitées plus loin, le volume total de matière représenté par les saillies 22 est sensiblement égal au volume de la gorge 20. Several projections 22 are projected from the shoulder 18, distributed around the barrel 12. For reasons which will be explained below, the total volume of material represented by the projections 22 is substantially equal to the volume of the groove 20.
Les deux phases essentielles du sertissage sont illustrées aux figures 2 et 3. The two essential phases of crimping are illustrated in Figures 2 and 3.
A la figure 2, le fût de l'écrou est engagé dans un perçage circulaire 24 de la tole 26 jusqu'à ce que les saillies 22 viennent en appui sur la tôle. In Figure 2, the barrel of the nut is engaged in a circular bore 24 of the sheet 26 until the projections 22 come to bear on the sheet.
Pour des raisons de clarté, on a omis de représenter aux figures les deux enclumes de sertissage qui s'appliquent sur la tête de l'écrou d'une part et sous la face intérieure de la tôle d'autre part. For the sake of clarity, we have omitted to represent in the figures the two crimping anvils which are applied to the head of the nut on the one hand and under the inner face of the sheet on the other hand.
On mentionnera ici pour mémoire la possibilité d'utiliser le fût de l'écrou lui-même pour poinçonner la tôle et réaliser le perçage 24 dans lequel le fût est engagé comme on vient de le voir. It will be mentioned here for the record the possibility of using the barrel of the nut itself for punching the sheet and making the bore 24 in which the barrel is engaged as we have just seen.
Lorsque les deux enclumes de sertissage sont forcées en rapprochement, les saillies 22 pénètrent la tôle 26 jusqu'à ce que l'épaulement 18 vienne au contact sur la tôle. Bien entendu, les saillies doivent avoir une hauteur inférieure à l'épaisseur de la tôle. When the two crimping anvils are forced into reconciliation, the projections 22 penetrate the sheet 26 until the shoulder 18 comes into contact with the sheet. Of course, the projections must have a height less than the thickness of the sheet.
La matière de la tôle déplacée par la pénétration des saillies est repoussée vers l'intérieur de la gorge 20 qu'elle remplit en totalité. The material of the sheet displaced by the penetration of the projections is pushed towards the inside of the groove 20 which it completely fills.
On constate donc que la pénétration des saillies 22 dans la tôle empêche toute rotation de l'écrou dans le perçage bien que le fût ait une forme cylindrique. It is therefore found that the penetration of the projections 22 in the sheet prevents any rotation of the nut in the bore although the barrel has a cylindrical shape.
De plus, le sertissage est assuré sur tout le pourtour du fût, et donc du perçage, ce qui lui confère une haute résistance. In addition, crimping is provided around the entire perimeter of the barrel, and therefore of the drilling, which gives it a high resistance.
Selon une autre caractéristique de l'invention, l'épaulement 18 présente un cordon circulaire 19 qui entdure toutes les saillies 22. According to another characteristic of the invention, the shoulder 18 has a circular bead 19 which intersects all of the projections 22.
Comme on le remarque aux figures 2 et 3, ce cordon assure trois rôles importants
- en premier lieu, il constitue un barrage étanche aux agents atmosphériques corrosifs qu'il empêche donc de pénétrer dans la zone de sertissage,
- en second lieu, il forme un barrage mécanique pour la matière déplacée par fluage lors du sertissage, qui ne peut donc se déplacer qu'en direction des intervalles separant les saillies 22 et de la gorge 20,
- en troisième lieu, il empêche la déformations de la tôle vers l'extérieur, susceptibles de se produire lorsqu'on effectue un sertissage avec soyage simultané. En effet, les tractions qui apparaissent dans la tôle du fait du soyage ont tendance à élargir le perçage.As can be seen in Figures 2 and 3, this cord fulfills three important roles
firstly, it constitutes a barrier impermeable to corrosive atmospheric agents which it therefore prevents from entering the crimping zone,
secondly, it forms a mechanical barrier for the material displaced by creep during crimping, which can therefore only move in the direction of the intervals separating the projections 22 and the groove 20,
- Thirdly, it prevents deformation of the sheet towards the outside, which can occur when crimping is carried out with simultaneous drilling. In fact, the pulls that appear in the sheet due to the jogging tend to widen the drilling.
Grâce à l'invention, le perçage ne présente aucun angle qui pourrait constituer une amorce de rupture ou de fissuration sous effort. Thanks to the invention, the bore has no angle which could constitute a starting point for breaking or cracking under stress.
On notera que la tête peut avoir toute forme désirée et que la forme cylindrique des dessins est purement illustrative. Notamment, comme illustré à la figure 4, la tête pourra comporter un prolongement fileté 28, ce qui confèrera à l'élément de fixation la forme d'un goujon fileté. It should be noted that the head can have any desired shape and that the cylindrical shape of the drawings is purely illustrative. In particular, as illustrated in FIG. 4, the head may include a threaded extension 28, which will give the fixing element the shape of a threaded stud.
S'agissant d'un écrou (figures 1 à 3), on comprendra que la présente invention s'applique aussi bien à un écrou traversant, qu'à un écrou borgne (non représenté). As regards a nut (FIGS. 1 to 3), it will be understood that the present invention applies as well to a through nut as to a blind nut (not shown).
De plus, les saillies illustrées ont une forme sensiblement parallélépipédique mais il va de soi que de nombreuses autres formes pourront convenir dans le cadre de l'invention, notamment des cannelures radiales. In addition, the projections illustrated have a substantially parallelepiped shape but it goes without saying that many other shapes may be suitable within the scope of the invention, in particular radial grooves.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8606324A FR2598189B1 (en) | 1986-04-30 | 1986-04-30 | FIXING ELEMENT, NUT OR STUD, TO BE CRIMPED |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8606324A FR2598189B1 (en) | 1986-04-30 | 1986-04-30 | FIXING ELEMENT, NUT OR STUD, TO BE CRIMPED |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2598189A1 true FR2598189A1 (en) | 1987-11-06 |
| FR2598189B1 FR2598189B1 (en) | 1988-12-09 |
Family
ID=9334818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8606324A Expired FR2598189B1 (en) | 1986-04-30 | 1986-04-30 | FIXING ELEMENT, NUT OR STUD, TO BE CRIMPED |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2598189B1 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0561715A1 (en) * | 1992-03-20 | 1993-09-22 | Former | Self-setting and self-piercing nut and screw |
| EP0713982A3 (en) * | 1994-11-22 | 1997-01-15 | Profil Verbindungstechnik Gmbh | Fastener and panel assembly and method of making same |
| EP0759510A1 (en) * | 1995-08-18 | 1997-02-26 | PROFIL-Verbindungstechnik GmbH & Co. KG | Hollow product, die for its use, method for the attachment of the hollow product to a plate-shaped element and mounting assembly |
| US5882159A (en) * | 1996-08-16 | 1999-03-16 | Profil Verbindungstechnik, Gmbh & Co. | Element, method of attaching the element to a plate-like component, component assembly and die button |
| DE102009039817A1 (en) | 2009-09-02 | 2011-03-03 | Profil Verbindungstechnik Gmbh & Co. Kg | Self-piercing nut member and assembly part consisting of the nut member and a sheet metal part |
| US9222502B2 (en) | 2010-07-30 | 2015-12-29 | Profil Verbindungstechnik Gmbh & Co., Kg | Self-piercing nut element and component assembly comprising the nut element and a sheet metal part |
| CN109424610A (en) * | 2018-11-15 | 2019-03-05 | 宾科精密部件(中国)有限公司 | Press part |
| CN110714966A (en) * | 2019-09-17 | 2020-01-21 | 上海纳特汽车标准件有限公司 | Pressure riveting bolt |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1312056A (en) * | 1960-11-10 | 1962-12-14 | Kaynar Mfg Co | Self-crimping device for crimping elements in openings in metal plates |
| US3253631A (en) * | 1963-06-17 | 1966-05-31 | Republic Steel Corp | Cold-formed self-piercing nut |
| US3282315A (en) * | 1964-07-09 | 1966-11-01 | Zahodiakin Tania | Nut mechanically fused in place |
| WO1982002579A1 (en) * | 1981-01-29 | 1982-08-05 | Springfix Befestigungstechnik | Housable nut |
-
1986
- 1986-04-30 FR FR8606324A patent/FR2598189B1/en not_active Expired
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1312056A (en) * | 1960-11-10 | 1962-12-14 | Kaynar Mfg Co | Self-crimping device for crimping elements in openings in metal plates |
| US3253631A (en) * | 1963-06-17 | 1966-05-31 | Republic Steel Corp | Cold-formed self-piercing nut |
| US3282315A (en) * | 1964-07-09 | 1966-11-01 | Zahodiakin Tania | Nut mechanically fused in place |
| WO1982002579A1 (en) * | 1981-01-29 | 1982-08-05 | Springfix Befestigungstechnik | Housable nut |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0561715A1 (en) * | 1992-03-20 | 1993-09-22 | Former | Self-setting and self-piercing nut and screw |
| FR2688835A1 (en) * | 1992-03-20 | 1993-09-24 | Thiant Boulonnerie | IMPROVEMENT TO A NUT AUTOSERTISSEUR AND AUTOPOINCONNEUR. |
| EP0713982A3 (en) * | 1994-11-22 | 1997-01-15 | Profil Verbindungstechnik Gmbh | Fastener and panel assembly and method of making same |
| EP0922866A3 (en) * | 1994-11-22 | 1999-06-30 | PROFIL-Verbindungstechnik GmbH & Co. KG | Fastener and panel assembly and method of making same |
| EP1116891A1 (en) * | 1994-11-22 | 2001-07-18 | Profil Verbindungstechnik GmbH & Co. KG | Press nut |
| EP0759510A1 (en) * | 1995-08-18 | 1997-02-26 | PROFIL-Verbindungstechnik GmbH & Co. KG | Hollow product, die for its use, method for the attachment of the hollow product to a plate-shaped element and mounting assembly |
| EP0957273A1 (en) * | 1995-08-18 | 1999-11-17 | Profil Verbindungstechnik GmbH & Co. KG | Fastening element and method for manufacturing the same |
| US5882159A (en) * | 1996-08-16 | 1999-03-16 | Profil Verbindungstechnik, Gmbh & Co. | Element, method of attaching the element to a plate-like component, component assembly and die button |
| DE102009039817A1 (en) | 2009-09-02 | 2011-03-03 | Profil Verbindungstechnik Gmbh & Co. Kg | Self-piercing nut member and assembly part consisting of the nut member and a sheet metal part |
| EP2292940A1 (en) | 2009-09-02 | 2011-03-09 | Profil Verbindungstechnik GmbH & Co. KG | Self-stamping nut element and assembly component comprising the nut element and a sheet metal section |
| US9249823B2 (en) | 2009-09-02 | 2016-02-02 | Profil Verbindungstechnik Gmbh & Co. Kg | Self-piercing nut element and component assembly consisting of the nut element and a sheet metal part |
| US9957999B2 (en) | 2009-09-02 | 2018-05-01 | Profil Verbindungstechnik Gmbh & Co, Kg | Self-piercing nut element and componet assembly consisting of the nut element and a sheet metal part |
| US9222502B2 (en) | 2010-07-30 | 2015-12-29 | Profil Verbindungstechnik Gmbh & Co., Kg | Self-piercing nut element and component assembly comprising the nut element and a sheet metal part |
| CN109424610A (en) * | 2018-11-15 | 2019-03-05 | 宾科精密部件(中国)有限公司 | Press part |
| CN109424610B (en) * | 2018-11-15 | 2023-07-25 | 宾科精密部件(中国)有限公司 | Riveting parts |
| CN110714966A (en) * | 2019-09-17 | 2020-01-21 | 上海纳特汽车标准件有限公司 | Pressure riveting bolt |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2598189B1 (en) | 1988-12-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |