FR2520457A1 - Snap-in connector for thin plates - has flexible hollow, fluted shaft with annular grooves to engage plates - Google Patents
Snap-in connector for thin plates - has flexible hollow, fluted shaft with annular grooves to engage plates Download PDFInfo
- Publication number
- FR2520457A1 FR2520457A1 FR8201231A FR8201231A FR2520457A1 FR 2520457 A1 FR2520457 A1 FR 2520457A1 FR 8201231 A FR8201231 A FR 8201231A FR 8201231 A FR8201231 A FR 8201231A FR 2520457 A1 FR2520457 A1 FR 2520457A1
- Authority
- FR
- France
- Prior art keywords
- rod
- opening
- ribs
- plates
- notches
- 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
- 229920003023 plastic Polymers 0.000 claims abstract description 4
- 239000004033 plastic Substances 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 3
- 238000000465 moulding Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000008602 contraction Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000002093 peripheral effect Effects 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
- F16B21/00—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings
- F16B21/06—Releasable fastening devices with snap-action
- F16B21/08—Releasable fastening devices with snap-action in which the stud, pin, or spigot has a resilient part
-
- 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
- F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
- F16B5/06—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of clamps or clips
- F16B5/0607—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of clamps or clips joining sheets or plates to each other
- F16B5/0621—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of clamps or clips joining sheets or plates to each other in parallel relationship
- F16B5/0642—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of clamps or clips joining sheets or plates to each other in parallel relationship the plates being arranged one on top of the other and in full close contact with each other
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Insertion Pins And Rivets (AREA)
- Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
Abstract
Description
L'invention se rapporte aux dispositifs d'agrafage du type comprenant une tige creuse en matériau plastique traversant une ouverture d'une pièce mince ou d'un empilage de plusieurs pièces minces et s'accrochant sur cette pièce ou sur cet empilage par encliquetage sur le bord de l'ouverture. Cette tige creuse peut soit faire corps avec une pièce destinée à être fixée sur ladite pièce mince ou sur l'empilage, soit faire corps avec une simple tête pour constituer une agrafe destinée à obturer ladite ouverture ou à assembler plusieurs pièces superposées munies d'ouvertures respectives disposées en regard. The invention relates to stapling devices of the type comprising a hollow rod made of plastic material passing through an opening of a thin piece or of a stack of several thin pieces and hanging on this piece or on this stack by snap-fastening onto the edge of the opening. This hollow rod can either be integral with a part intended to be fixed on said thin part or on the stack, or be integral with a single head to constitute a staple intended to close said opening or to assemble several superimposed parts provided with openings respective arranged opposite.
Dans ces dispositifs d'agrafage,la tige comprend au moins une proéminence qui déborde radialement de l'ouverture correspondante de manière à prendre axialement appui sur la face de la pièce ou de l'empilage de pièces opposée à la face d'accès par laquelle est introduite la tige.Pour que la proéminence puisse passer à travers L'ou- verture lors de l'engagement de la tige,celle-ci est rendue radialement déformable par divers moyens,par exemple en la munissant de plusieurs branches longitudinales ou, préférablement pour des raisons d'endurance,en lui donnant une forme sensiblement cylindrique,amincie à son extrémité libre,et en y aménageant un évidement central.La tige est alors creuse,approximativement tubulaire,mais sa flexibilité radiale est alors très faible,ce qui impose que la proéminence soit de très petite dimension radiale,et par suite vulnérable,pour pouvoir traverser l'ouverture. In these stapling devices, the rod comprises at least one protrusion which projects radially from the corresponding opening so as to bear axially on the face of the part or of the stack of parts opposite the access face by which The rod is introduced so that the prominence can pass through the opening when the rod is engaged, the rod is made radially deformable by various means, for example by providing it with several longitudinal branches or, preferably for reasons of endurance, by giving it a substantially cylindrical shape, thinned at its free end, and by fitting a central recess therein. The rod is then hollow, approximately tubular, but its radial flexibility is then very low, which imposes that the prominence is of very small radial dimension, and consequently vulnerable, to be able to cross the opening.
De plus,la tige doit alors avoir une dimension très précisément adaptée à celle de l'ouverture,ce qui n'estpas compatible avec une fabrication courante,avec des tolérances dimensionnelles relativement larges.In addition, the rod must then have a dimension very precisely adapted to that of the opening, which is not compatible with current production, with relatively wide dimensional tolerances.
L'invention a pour but de réaliser un dispositif d'agrafage à tige encliquetable qui soit résistant et peu couteux et dans lequel la tige soit suffisamment élastique radialement pour s'adapter à une ouverture de dimension peu précise. The object of the invention is to produce a stapling device with a snap-on rod which is resistant and inexpensive and in which the rod is sufficiently radially elastic to adapt to an opening of imprecise dimension.
A cet effet, l'invention a pour objet un dispositif d ' agrafage du type précité, caractérisé en ce que la section transversale de la tige forme un polygone dont les côtés sont concaves et dont les arêtes constituent des nervures longitudinales de la tige, au moins une des arêtes étant munie d'un ou de plusieurs crans d'encliquetage de la tige dans l'ouverture. To this end, the subject of the invention is a stapling device of the aforementioned type, characterized in that the cross section of the rod forms a polygon whose sides are concave and whose edges constitute longitudinal ribs of the rod, at at least one of the edges being provided with one or more notches for snapping the rod into the opening.
Le polygone est avantageusement à quatre côtés, et les crans sont de préférence formés sur deux nervures diamétralement~opposées; les nervures dépourvues de crans sont de préférence arrondies au diamètre de l'ouverture sur laquelle s'encliquette la tige. The polygon is advantageously four-sided, and the notches are preferably formed on two diametrically opposite ribs; the ribs devoid of notches are preferably rounded to the diameter of the opening on which the rod engages.
Un exemple de réalisation d'un dispositif d'agrafage selon l'invention est décrit ci-après, avec référence au dessin annexé, sur lequel:
la Fig. 1 est une vue en coupe axiale d'une agrafe en position d'assemblage de deux pièces minces; et
la Fig. 2 est une vue en coupe transversale de l'agrafe prise suivant la ligne II-II de la Fig. 1.An exemplary embodiment of a stapling device according to the invention is described below, with reference to the attached drawing, in which:
Fig. 1 is an axial section view of a clip in the assembly position of two thin parts; and
Fig. 2 is a cross-sectional view of the clip taken along line II-II of FIG. 1.
On voit sur la Fig. 1 une agrafe 1 destinée à assembler deux pièces minces superposées,telles que des panneaux 2, 3, qui présentent des ouvertures circulaires respectives 4, 5 en regard l'une de l'autre. We see in Fig. 1 a clip 1 intended to assemble two superimposed thin parts, such as panels 2, 3, which have respective circular openings 4, 5 facing one another.
L'agrafe 1 comporte une large tête circulaire 6 en forme de coupelle qui prend appui sur la face d'accès 7 du panneau 2, c'est-à-dire sur la face de celui-ci opposée au panneau 3, au moyen d'une nervure annulaire 8 et d'une bordure périphérique amincie 9 formant lèvre souple. The clip 1 comprises a large circular head 6 in the form of a cup which bears on the access face 7 of the panel 2, that is to say on the face of the latter opposite to the panel 3, by means of 'An annular rib 8 and a thinned peripheral edge 9 forming a flexible lip.
Du centre de la tête 6 part une tige creuse 10 qui traverse librement l'ouverture 4 et s'encliquette dans l'ouverture 5, dont le diamètre est légèrement inférieur. From the center of the head 6 leaves a hollow rod 10 which freely crosses the opening 4 and snaps into the opening 5, the diameter of which is slightly smaller.
La section transversale de la tige 10, visible sur la Fig. 2, forme un polygone régulier à quatre côtés concaves sensiblement égaux. Les arêtes du polygone sont arrondies et constituent quatre nervures longitudinales de la tige; deux d'entre elles, 11 et llA, diamétralement opposées, sont lisses et passent juste dans l'ouverture 5; les deux autres, 12 et 12A, également diamétralement opposées, sont munies symétriquement de proéminences formant des crans. Dans cet exemple, chaque nervure 12, 12A définit trois sommets de crans, référencés 13 à 15, 13A à 15A à partir de l'extrémité libre de la tige, et deux creux intermédiaires 16 et 17, 16A et 17A.Les sommets de ces crans pris deux à deux, diamétralement opposés, tels que 13 et 13A, sont espacés d'une distance supérieure au diamètre de ltouverture 5, et les creux 16 et 17, 16A et 17A ont une dimension axiale suffisante pour recevoir la bordure de l'ouverture 5. The cross section of the rod 10, visible in FIG. 2, forms a regular polygon with four substantially equal concave sides. The edges of the polygon are rounded and constitute four longitudinal ribs of the rod; two of them, 11 and 11A, diametrically opposite, are smooth and pass just into the opening 5; the other two, 12 and 12A, also diametrically opposite, are symmetrically provided with protrusions forming notches. In this example, each rib 12, 12A defines three peaks of notches, referenced 13 to 15, 13A to 15A from the free end of the rod, and two intermediate recesses 16 and 17, 16A and 17A. diametrically opposed notches taken in pairs, such as 13 and 13A, are spaced apart by a distance greater than the diameter of the opening 5, and the recesses 16 and 17, 16A and 17A have an axial dimension sufficient to receive the edge of the opening 5.
La tige 10 comporte un évidement central borgne 18 qui débouche à son extrémité libre, c'est-à-dire du côté opposé à la tête 6, et dont la section forme un carré à côtés concaves, de manière à déterminer avec le contour extérieur de la tige quatre parois concaves 19 relativement flexibles. Ces parois permettent notamment, comme l'indique le tracé en traits pointillés de la
Fig. 2, une notable contraction radiale de la tige, assurant un rapprochement suffisant des nervures 12 et 12A pour que les crans puissent passer élastiquement à travers l'ouverture 5, laquelle a été représentée en traits mixtes et applique sur ces nervures des efforts centripètes diamétralement opposés F1, F2.De tels efforts sont appliqués lors du montage et du démontage de l'agrafe par coopération du bord de l'ouverture 5 avec les flancs des crans, qui sont inclinés. Çhaque nervure 11, llA, 12, 12A est munie, son extrémité libre, d'un chanfrein allongé 20, 20A facilitant l'engagement de l'agrafe dans l'ouverture 5. The rod 10 has a blind central recess 18 which opens at its free end, that is to say on the side opposite to the head 6, and the cross section of which forms a square with concave sides, so as to determine with the external contour of the rod four relatively flexible concave walls 19. These walls allow in particular, as indicated by the dotted line layout of the
Fig. 2, a notable radial contraction of the rod, ensuring a sufficient approximation of the ribs 12 and 12A so that the notches can pass elastically through the opening 5, which has been shown in broken lines and applies to these ribs diametrically opposite centripetal forces F1, F2.Such efforts are applied during assembly and disassembly of the clip by cooperation of the edge of the opening 5 with the sides of the notches, which are inclined. Each rib 11, llA, 12, 12A is provided, its free end, with an elongated chamfer 20, 20A facilitating the engagement of the clip in the opening 5.
La flexibilité des parois 19 étant relativement grande, ainsi donc que la capacité de rapprochement des deux nervures 12, 12A, l'agrafe 1 peut être utilisée en association avec des ouvertures de dimensions non rigoureusement déterminées, donc de fabrication courante avec de larges tolérances. De plus, la déformabilité radiale de la tige présente l'avantage de permettre, lors de la fabrication de l'agrafe par moulage, son extraction hors d'un moule non destructible, après simple démontage d'un noyau correspondant à l'évidement central 18. The flexibility of the walls 19 being relatively large, as well as the ability to bring the two ribs 12, 12A together, the clip 1 can be used in combination with openings of dimensions that are not strictly determined, therefore of current manufacture with wide tolerances. In addition, the radial deformability of the rod has the advantage of allowing, during the manufacture of the clip by molding, its extraction from a non-destructible mold, after simple disassembly of a core corresponding to the central recess 18.
En variante, au lieu d'assembler deux pièces, l'agrafe peut servir de bouchonpourune ouverture d'une seule pièce. Ainsi, l'agrafe 1 décrite plus haut peut boucher l'ouverture 5 du panneau 3 seul par encliquetage dans cette ouverture des creux 17 et 17A, non utilisés dans le cas précédent, formés entre les sommets 14, 15 et 14A, 15A et situés au niveau approprié par rapport à l'extrémité libre de la nervure d'appui 8 de la tête 6. Alternatively, instead of joining two pieces, the clip can be used as a stopper for a single piece opening. Thus, the clip 1 described above can block the opening 5 of the panel 3 alone by snapping into this opening of the recesses 17 and 17A, not used in the previous case, formed between the vertices 14, 15 and 14A, 15A and located at the appropriate level with respect to the free end of the support rib 8 of the head 6.
Un autre exemple d'application de l'invention consiste, pour assembler une pièce moulée en matériau plastique contre un panneau ou contre un empilage de plusieurs pièces minces, à munir la pièce moulée, perpendiculairement à sa face en contact avec le panneau ou l'empilage, d'au moins une tige creuse telle que celle décrite plus haut, à engager cette tige ou chaque tige dans une ouverture appropriée du panneau ou de l'empilage et à l'encliqueter dans cette ouverture. La réalisation d'une telle pièce moulée est rendue aisée par la simplicité susmentionnée du moulage des tiges selon l'invention. Another example of application of the invention consists, in order to assemble a molded piece of plastic material against a panel or against a stack of several thin pieces, to provide the molded piece, perpendicular to its face in contact with the panel or the stack, of at least one hollow rod such as that described above, to engage this rod or each rod in an appropriate opening of the panel or of the stack and to snap it into this opening. The production of such a molded part is made easy by the aforementioned simplicity of molding the rods according to the invention.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8201231A FR2520457A1 (en) | 1982-01-27 | 1982-01-27 | Snap-in connector for thin plates - has flexible hollow, fluted shaft with annular grooves to engage plates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8201231A FR2520457A1 (en) | 1982-01-27 | 1982-01-27 | Snap-in connector for thin plates - has flexible hollow, fluted shaft with annular grooves to engage plates |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2520457A1 true FR2520457A1 (en) | 1983-07-29 |
| FR2520457B1 FR2520457B1 (en) | 1984-04-20 |
Family
ID=9270353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8201231A Granted FR2520457A1 (en) | 1982-01-27 | 1982-01-27 | Snap-in connector for thin plates - has flexible hollow, fluted shaft with annular grooves to engage plates |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2520457A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3506127A1 (en) * | 1985-02-22 | 1986-09-04 | Reitter & Schefenacker Kg, 7300 Esslingen | Mounting device for at least two parts which are to be connected to one another, preferably on motor vehicles |
| DE3506125A1 (en) * | 1985-02-22 | 1986-09-04 | Reitter & Schefenacker Kg, 7300 Esslingen | Mounting device for at least two parts which are to be connected to one another, preferably on motor vehicles |
| US4770582A (en) * | 1984-02-25 | 1988-09-13 | A. Raymond | Press-type fastener for threaded pins |
| US5567098A (en) * | 1995-02-01 | 1996-10-22 | Trw Inc. | Releasable fastener assembly |
| DE19739950A1 (en) * | 1997-09-11 | 1999-04-01 | United Carr Gmbh Trw | Holding element made of plastic for at least one plate-shaped object |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005527752A (en) | 2002-05-28 | 2005-09-15 | ニューフレイ リミテッド ライアビリティ カンパニー | Elastic clip type fastener and method of manufacturing the same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB818548A (en) * | 1955-10-26 | 1959-08-19 | United Carr Fastener Corp | Improvements in and relating to fastening devices |
| US3860999A (en) * | 1973-05-03 | 1975-01-21 | Usm Corp | Fastener |
| FR2426179A1 (en) * | 1978-05-16 | 1979-12-14 | Itw Ltd | ATTACHMENT FOR FIXING TRIM PANELS, ESPECIALLY FOR THE AUTOMOTIVE INDUSTRY |
-
1982
- 1982-01-27 FR FR8201231A patent/FR2520457A1/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB818548A (en) * | 1955-10-26 | 1959-08-19 | United Carr Fastener Corp | Improvements in and relating to fastening devices |
| US3860999A (en) * | 1973-05-03 | 1975-01-21 | Usm Corp | Fastener |
| FR2426179A1 (en) * | 1978-05-16 | 1979-12-14 | Itw Ltd | ATTACHMENT FOR FIXING TRIM PANELS, ESPECIALLY FOR THE AUTOMOTIVE INDUSTRY |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4770582A (en) * | 1984-02-25 | 1988-09-13 | A. Raymond | Press-type fastener for threaded pins |
| DE3506127A1 (en) * | 1985-02-22 | 1986-09-04 | Reitter & Schefenacker Kg, 7300 Esslingen | Mounting device for at least two parts which are to be connected to one another, preferably on motor vehicles |
| DE3506125A1 (en) * | 1985-02-22 | 1986-09-04 | Reitter & Schefenacker Kg, 7300 Esslingen | Mounting device for at least two parts which are to be connected to one another, preferably on motor vehicles |
| US5567098A (en) * | 1995-02-01 | 1996-10-22 | Trw Inc. | Releasable fastener assembly |
| DE19739950A1 (en) * | 1997-09-11 | 1999-04-01 | United Carr Gmbh Trw | Holding element made of plastic for at least one plate-shaped object |
| DE19739950C2 (en) * | 1997-09-11 | 2002-01-31 | United Carr Gmbh Trw | Holding element made of plastic for at least one plate-shaped object |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2520457B1 (en) | 1984-04-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| CA | Change of address | ||
| DL | Decision of the director general to leave to make available licences of right | ||
| ST | Notification of lapse |