FR2872557A1 - Fixing nut e.g. for vehicle seat has threaded metal core with collar and outer overmoulded plastic flange - Google Patents
Fixing nut e.g. for vehicle seat has threaded metal core with collar and outer overmoulded plastic flange Download PDFInfo
- Publication number
- FR2872557A1 FR2872557A1 FR0407400A FR0407400A FR2872557A1 FR 2872557 A1 FR2872557 A1 FR 2872557A1 FR 0407400 A FR0407400 A FR 0407400A FR 0407400 A FR0407400 A FR 0407400A FR 2872557 A1 FR2872557 A1 FR 2872557A1
- Authority
- FR
- France
- Prior art keywords
- flange
- nut
- threaded member
- collar
- nut according
- 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
- 239000004033 plastic Substances 0.000 title claims abstract description 8
- 239000002184 metal Substances 0.000 title abstract description 5
- 239000004952 Polyamide Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 229920002647 polyamide Polymers 0.000 claims description 7
- 239000012815 thermoplastic material Substances 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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
- F16B37/048—Non-releasable devices
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Connection Of Plates (AREA)
Abstract
Description
La présente invention concerne un écrou de fixation, du type comportant unThe present invention relates to a fastening nut, of the type comprising a
organe taraudé s'étendant suivant un axe. threaded member extending along an axis.
On connaît des écrous de fixation qui sont utilisés pour fixer des sièges de véhicules automobiles à une structure fixe du véhicule. De tels écrous sont constitués par un organe taraudé comportant un contour extérieur non circulaire. Fastening nuts are known which are used to attach motor vehicle seats to a fixed structure of the vehicle. Such nuts are constituted by a threaded member having a non-circular outer contour.
Les écrous connus sont fabriqués entièrement en 10 métal, et présentent de ce fait un poids et un coût importants. Known nuts are made entirely of metal, and thus have a significant weight and cost.
L'invention a pour but de pallier ces inconvénients, et de proposer un écrou qui soit léger et économique, tout en ayant des résistances mécaniques élevées. The invention aims to overcome these disadvantages, and to propose a nut that is lightweight and economical, while having high mechanical strength.
A cet effet, l'invention a pour objet un écrou de fixation du type précité, l'écrou comprend en outre une bride en matière plastique fixée à l'organe taraudé. For this purpose, the invention relates to a fastener nut of the aforementioned type, the nut further comprises a plastic flange attached to the threaded member.
Selon des modes particuliers de réalisation, l'écrou selon l'invention porte l'une ou plusieurs des caractéristiques suivantes: - la bride est en une matière plastique contenant un matériau thermoplastique, notamment contenant du polyamide, et de préférence en polyamide 6.6 30 FV; - la bride est surmoulée autour de l'organe 25 taraudé ; - la bride s'étend uniquement sur une partie axiale de l'organe taraudé ; - l'organe taraudé et la bride sont fixés axialement l'un à l'autre par complémentarité de formes; - l'organe taraudé comporte une collerette extérieure, et la bride entoure la collerette extérieure d'un côté et de l'autre; - l'organe taraudé comporte des surfaces cylindriques à section circulaire d'un côté et de l'autre de la collerette, et ces surfaces cylindriques ont des diamètres extérieurs différents; - l'écrou comporte une extrémité proximale et une extrémité distale, le diamètre extérieur de la surface cylindrique adjacente à l'extrémité proximale est supérieur au diamètre extérieur de la surface cylindrique adjacente à l'extrémité distale; et la bride et l'organe taraudé forment une surface de serrage de l'écrou. According to particular embodiments, the nut according to the invention bears one or more of the following characteristics: the flange is made of a plastic material containing a thermoplastic material, in particular containing polyamide, and preferably of polyamide 6.6 30 FV ; the flange is overmolded around the threaded member; - The flange extends only on an axial portion of the threaded member; - The threaded member and the flange are axially fixed to each other by complementarity of shapes; - The threaded member has an outer flange, and the flange surrounds the outer flange on one side and the other; - The threaded member has cylindrical surfaces with a circular section on one side and the other of the collar, and these cylindrical surfaces have different outer diameters; the nut has a proximal end and a distal end, the outside diameter of the cylindrical surface adjacent the proximal end is greater than the outside diameter of the cylindrical surface adjacent to the distal end; and the flange and the threaded member form a clamping surface of the nut.
L'invention concerne en outre un ensemble comprenant un siège de véhicule automobile, une structure de véhicule automobile, caractérisé en ce que le siège de véhicule automobile est fixé à la structure par l'intermédiaire d'un écrou tel que défini ci-dessus. The invention further relates to an assembly comprising a motor vehicle seat, a motor vehicle structure, characterized in that the motor vehicle seat is fixed to the structure by means of a nut as defined above.
L'invention sera mieux comprise à la lecture de la description qui va suivre, donnée uniquement à titre d'exemple et faite en se référant aux dessins annexés, sur lesquels: - la Figure 1 est une vue en coupe d'un ensemble de 20 fixation selon l'invention; - la Figure 2 est une vue en perspective d'un écrou selon l'invention; et - la Figure 3 est une vue axiale de l'écrou suivant la ligne III de la Figure 2. The invention will be better understood on reading the description which follows, given solely by way of example and with reference to the appended drawings, in which: FIG. 1 is a sectional view of a set of 20 fastening according to the invention; - Figure 2 is a perspective view of a nut according to the invention; and - Figure 3 is an axial view of the nut along the line III of Figure 2.
La Figure 1 montre, en coupe, une structure 2 de véhicule automobile, une patte de fixation 4 d'un siège de véhicule automobile, un écrou de fixation 6 selon l'invention et une vis 8. Figure 1 shows, in section, a structure 2 of a motor vehicle, a bracket 4 of a motor vehicle seat, a fastening nut 6 according to the invention and a screw 8.
La patte de fixation 4 est fixée à la structure 2 de véhicule par l'intermédiaire de la vis 8 et de l'écrou 6. The fixing lug 4 is fixed to the vehicle structure 2 by means of the screw 8 and the nut 6.
La structure 2 de véhicule délimite une surface de repos 10 sur laquelle est située la patte de fixation 4 du siège. La structure 2 délimite en outre un logement 12 dans lequel est inséré l'écrou 6. The vehicle structure 2 delimits a resting surface 10 on which is located the fixing lug 4 of the seat. The structure 2 further delimits a housing 12 into which the nut 6 is inserted.
L'écrou de fixation 6 comprend un organe taraudé 14, ainsi qu'une bride 16. The fixing nut 6 comprises a threaded member 14 and a flange 16.
L'écrou de fixation 6 définit une extrémité proximale 18, tournée vers la patte 4 et formant une surface de serrage, ainsi qu'une extrémité distale 20 tournée à l'opposé de la patte 4. La surface de serrage porte contre la structure 2. The fixing nut 6 defines a proximal end 18, turned towards the tab 4 and forming a clamping surface, as well as a distal end 20 facing away from the tab 4. The clamping surface bears against the structure 2 .
L'organe taraudé 14 est fabriqué en métal par exemple en acier. The threaded member 14 is made of metal, for example steel.
L'organe taraudé 14 a une forme de révolution autour d'un axe central X-X. Les expressions extérieur et intérieur seront utilisées par la suite par rapport à la direction radiale de cet axe. The threaded member 14 has a shape of revolution about a central axis X-X. The expressions outside and inside will be used thereafter relative to the radial direction of this axis.
L'organe taraudé 14 est muni d'un taraudage central 15 22 traversant, qui se raccorde, côté proximal, à une partie biseautée 24. The threaded member 14 is provided with a central thread 22 through which is connected proximally to a beveled portion 24.
L'organe taraudé 14 est muni d'une collerette 26 radialement extérieure, qui est disposée entièrement entre l'extrémité proximale 18 et l'extrémité distale 20 et à distance de celles-ci. Entre l'extrémité proximale 18 et la collerette 26, l'organe taraudé 14 comporte une première surface 27 cylindrique extérieure à section circulaire et ayant un premier diamètre extérieur Dl. Entre la collerette 26 et l'extrémité distale 20, l'organe taraudé 14 comporte une seconde surface 28 cylindrique extérieure à section circulaire ayant un deuxième diamètre extérieur D2, qui est inférieur au premier diamètre Dl. The threaded member 14 is provided with a radially outer collar 26, which is disposed entirely between the proximal end 18 and the distal end 20 and at a distance therefrom. Between the proximal end 18 and the flange 26, the threaded member 14 has a first outer cylindrical surface 27 of circular section and having a first outer diameter Dl. Between the flange 26 and the distal end 20, the threaded member 14 comprises a second circular cylindrical outer surface 28 having a second outer diameter D2, which is smaller than the first diameter D1.
La bride 16 est fabriquée en une matière à base d'un matériau thermoplastique, de préférence en polyamide, et notamment en une matière à base d'un matériau thermoplastique chargé ou non. La bride est par exemple fabriquée en polyamide 6.6 30 FV. The flange 16 is made of a material based on a thermoplastic material, preferably polyamide, and in particular a material based on a thermoplastic material loaded or not. The flange is for example made of polyamide 6.6 30 FV.
La bride 16 s'étend uniquement sur une partie axiale de l'organe taraudé 14, de telle sorte que l'extrémité distale de l'organe 14 dépasse la bride 16. L'extrémité proximale de la bride 16 affleure l'extrémité proximale de l'organe 14 en formant la surface de serrage. The flange 16 extends only over an axial portion of the threaded member 14, so that the distal end of the member 14 protrudes from the flange 16. The proximal end of the flange 16 is flush with the proximal end of the flange 16. the member 14 forming the clamping surface.
La bride 16 comporte une surface intérieure 29 formant une rainure 30. Ainsi, l'organe taraudé 14 et la bride 16 sont fixés l'un à l'autre axialement par complémentarité de formes de la collerette 26 et de la rainure 30. The flange 16 has an inner surface 29 forming a groove 30. Thus, the threaded member 14 and the flange 16 are fixed to each other axially by complementary shapes of the flange 26 and the groove 30.
Comme il ressort des Figures 2 et 3, le contour extérieur de la bride 16, en vue axiale, est non circulaire, de telle sorte que la bride 16 définit des surfaces planes d'application 34 à la structure 2, empêchant une rotation de l'écrou 6 lors du montage. As is apparent from Figures 2 and 3, the outer contour of the flange 16, in axial view, is non-circular, so that the flange 16 defines planar surfaces of application 34 to the structure 2, preventing a rotation of the nut 6 during assembly.
L'écrou 6 est fabriqué par surmoulage de la bride 16 15 en matière plastique autour de l'organe taraudé 14. The nut 6 is made by overmolding the plastic flange 16 15 around the threaded member 14.
L'écrou selon l'invention présente les avantages suivants. The nut according to the invention has the following advantages.
Grâce à l'utilisation de matière plastique pour la bride 16, l'écrou selon l'invention présente un poids 20 faible, et un faible coût. By using plastic material for the flange 16, the nut according to the invention has a low weight, and a low cost.
La matière POLYAMIDE 6.6 30 FV a une bonne résistance à la chaleur, une bonne résistance à l'abrasion et une bonne tenue aux agents chimiques. The POLYAMIDE 6.6 30 FV material has good heat resistance, good abrasion resistance and good resistance to chemical agents.
Grâce à l'utilisation de l'organe taraudé 14 en métal, l'écrou 6 a une bonne résistance mécanique. Through the use of the threaded member 14 of metal, the nut 6 has a good mechanical strength.
Grâce à la disposition particulière des surfaces 27 et 28 ainsi que de la collerette 26, les contraintes dans la bride 16 sont faibles, assurant un bon maintien de la bride 16 sur l'organe taraudé 14. Thanks to the particular arrangement of the surfaces 27 and 28 as well as the flange 26, the stresses in the flange 16 are small, ensuring a good retention of the flange 16 on the threaded member 14.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0407400A FR2872557B1 (en) | 2004-07-02 | 2004-07-02 | FIXING NUT AND CORRESPONDING ASSEMBLY |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0407400A FR2872557B1 (en) | 2004-07-02 | 2004-07-02 | FIXING NUT AND CORRESPONDING ASSEMBLY |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2872557A1 true FR2872557A1 (en) | 2006-01-06 |
| FR2872557B1 FR2872557B1 (en) | 2007-11-30 |
Family
ID=34946961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR0407400A Active FR2872557B1 (en) | 2004-07-02 | 2004-07-02 | FIXING NUT AND CORRESPONDING ASSEMBLY |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2872557B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2929356A1 (en) * | 2008-03-28 | 2009-10-02 | Peugeot Citroen Automobiles Sa | Nuts support i.e. bar, for assembling e.g. suspension pivot arm, on front axle of motor vehicle, has nuts partially molded with material by extending outer surfaces to prolong holes and provide braking unit for fastening screw |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4792475A (en) * | 1987-10-16 | 1988-12-20 | Chrysler Motors Corporation | Composite joint pad for synthetic resin panel |
| WO1997003297A1 (en) * | 1995-07-07 | 1997-01-30 | Filterwerk Mann + Hummel Gmbh | Bush |
| FR2800815A1 (en) * | 1999-11-10 | 2001-05-11 | Ecia Equip Composants Ind Auto | Insert for plastic vehicle component, has flange extending out from sleeve forming part of mechanical fastener and flange has recessed region for anchoring insert to plastic |
| DE10018407A1 (en) * | 2000-04-13 | 2001-11-29 | Opel Adam Ag | Vehicle seat is a module with a base to be tested before mounting to the vehicle bodywork and bonded to the vehicle floor by an adhesive in channels at the supporting edges of the base |
-
2004
- 2004-07-02 FR FR0407400A patent/FR2872557B1/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4792475A (en) * | 1987-10-16 | 1988-12-20 | Chrysler Motors Corporation | Composite joint pad for synthetic resin panel |
| WO1997003297A1 (en) * | 1995-07-07 | 1997-01-30 | Filterwerk Mann + Hummel Gmbh | Bush |
| FR2800815A1 (en) * | 1999-11-10 | 2001-05-11 | Ecia Equip Composants Ind Auto | Insert for plastic vehicle component, has flange extending out from sleeve forming part of mechanical fastener and flange has recessed region for anchoring insert to plastic |
| DE10018407A1 (en) * | 2000-04-13 | 2001-11-29 | Opel Adam Ag | Vehicle seat is a module with a base to be tested before mounting to the vehicle bodywork and bonded to the vehicle floor by an adhesive in channels at the supporting edges of the base |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2929356A1 (en) * | 2008-03-28 | 2009-10-02 | Peugeot Citroen Automobiles Sa | Nuts support i.e. bar, for assembling e.g. suspension pivot arm, on front axle of motor vehicle, has nuts partially molded with material by extending outer surfaces to prolong holes and provide braking unit for fastening screw |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2872557B1 (en) | 2007-11-30 |
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