FR2508994A1 - Threaded insert for soft materials - has chamfered square section and is moulded in two halves - Google Patents
Threaded insert for soft materials - has chamfered square section and is moulded in two halves Download PDFInfo
- Publication number
- FR2508994A1 FR2508994A1 FR8113165A FR8113165A FR2508994A1 FR 2508994 A1 FR2508994 A1 FR 2508994A1 FR 8113165 A FR8113165 A FR 8113165A FR 8113165 A FR8113165 A FR 8113165A FR 2508994 A1 FR2508994 A1 FR 2508994A1
- Authority
- FR
- France
- Prior art keywords
- insert
- hole
- insert nut
- nut according
- screw
- 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
- 239000007779 soft material Substances 0.000 title claims abstract description 4
- 239000004033 plastic Substances 0.000 claims abstract description 10
- 229920003023 plastic Polymers 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims description 3
- 239000002023 wood Substances 0.000 claims description 3
- 230000000295 complement effect Effects 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 230000035515 penetration Effects 0.000 claims description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
- 239000011093 chipboard Substances 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000010079 rubber tapping Methods 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
- F16B37/12—Nuts or like thread-engaging members with thread-engaging surfaces formed by inserted coil-springs, discs, or the like; Independent pieces of wound wire used as nuts; Threaded inserts for holes
- F16B37/122—Threaded inserts, e.g. "rampa bolts"
-
- 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
-
- 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
- F16B37/14—Cap nuts; Nut caps or bolt caps
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Connection Of Plates (AREA)
Abstract
Description
La présente invention a pour objet un dispositif d'insert auto-bloquant venant s'ajuster -dans des trous pratiques dans des éléments tels que bois, matière plastique > panneaux de particules, etc ... dans lesquels les trous pratiqués pour la fixation de pièces sont très gé néralement de forme cylindrique. The subject of the present invention is a self-locking insert device that can be adjusted in practical holes in elements such as wood, plastics, particle boards, etc. in which the holes used for fastening pieces are very generally cylindrical in shape.
On connait des dispositifs d'inserts servant à réaliser des assemblages qui ne donnent pas toujours les résultats voulus ; telles pièces métalliques possédant des griffes ou crampons de fixation détériorent les élé- ments, en arrachant le bois par exemple. There are known inserts devices for making assemblies that do not always give the desired results; such metal parts having claws or fixing studs deteriorate the elements, tearing wood for example.
La présente invention vise un insert en matière plastique, de preférence réalisé en deux parties symétriques reliées par exemple par une charnière (film plastique) > afin de réduire les coûts de production, mais qui peut cependant être moulé en une seule pièce. Lors de l'utilisation, cet insert est replié sur lui-même et forme une pièce compacte, les deux parties étant centrées éventuellement par des ergots. Dès lors, cet insert présente un corps de forme extérieure étudiée de façon à empêcher sa rotation par rapport à l'élément le recevant, et de lui permettre de s'incruster dans celui-ci, même si le trou dans lequel il vient se loger est cylindrique.L'intérieur du corps est traversé par un trou de section cylindrique ou polygonale quelconque suivant l'utilisation et peut recevoir une vis autotaraudeuse ou une vis métrique en le dotant d'un filetage venue de moulage. The present invention relates to a plastic insert, preferably made of two symmetrical parts connected for example by a hinge (plastic film)> to reduce production costs, but which can however be molded in one piece. In use, this insert is folded back on itself and forms a compact piece, the two parts possibly being centered by lugs. Therefore, this insert has a body of external shape designed to prevent its rotation relative to the receiving element, and to allow it to become embedded in it, even if the hole in which it comes to lodge is cylindrical.The interior of the body is traversed by a hole of cylindrical or polygonal section of any kind according to the use and can receive a self-tapping screw or a metric screw by providing a threaded molding.
Le corps de l'insert est surmonté d'une tête esthétique qui peut composer un ensemble harmonieux avec la finition générale. L'épaisseur de cette tete est définie de manière à pouvoir entre traversée par la vis si besoin est. Elle doit être cependant suffisamment structurée pour remplir la fonction de butée lors du serrage. Il doit être remarqué de plus que l'insert suivant l'invention, réalisé en matière plastique > évite toute corrosion. The body of the insert is surmounted by an aesthetic head that can compose a harmonious whole with the overall finish. The thickness of this head is defined so as to be able to pass through the screw if necessary. However, it must be sufficiently structured to fulfill the stop function during tightening. It should be noted further that the insert according to the invention, made of plastic> avoids any corrosion.
D'autres caractéristiques et avantages de la présente invention ressortiront de la description qui va suivre faite en regard des dessins annexés sur lesquels
La figure 1 est une vue en élévation d'un insert selon l'invention montrant 11 ensemble venu de moulage
La figure 2 est une vue en perspective montrant l'insert replié sur lui-même et pret à l'emploi
La figure 3 est une vue en coupe suivant la ligne III-III de la figure 2
La figure 4 est une vue en élévation montrant l'insert présenté dans un élément
La figure 5 est une vue en élévation montrant l'insert en cours de pénétration dans l'élément
La figure 6 est une vue en élévation de l'insert une fois assemblé.Other features and advantages of the present invention will emerge from the description which follows, with reference to the appended drawings in which
Figure 1 is an elevational view of an insert according to the invention showing 11 together molded
FIG. 2 is a perspective view showing the insert folded back on itself and ready for use
Figure 3 is a sectional view along the line III-III of Figure 2
FIG. 4 is an elevational view showing the insert presented in an element
Figure 5 is an elevational view showing the insert being penetrated into the element
Figure 6 is an elevational view of the insert once assembled.
En se référant aux dessins, un écrou insert selon l'invention se compose de deux parties symétriques complémentaires 1 et 1A reliées par un cordon ou film charnière 2 ; ce film peut être placé sur la tête ou à la base de la pièce. Les deux parties symétriques 1 et 1A sont repliées sur elles-mêmes et peuvent être centrées par des ergots mâle 3 et femelle 3A > comme dans exemple présent. Une fois replié, cet insert forme un bloc compact,
L'insert ainsi formé se compose d'un corps 4 de section droite polygonale et de préférence quadrangulaire (Fig.3 montrant quatre portées plates 5, et dont les quatre arêtes sont chanfreinées dans l'exemple choisi pour former d'autres portées plates 6.Dans le cas d'éléments en matières tendres, la section carrée (fig.3) peut être étudiée sans couper les arêtes du carré, ou en créant des redents parallèles à l'axe de l'insert, ceci afin de mieux faire pénétrer l'insert dans l'élément 14 et éviter ainsi toute rotation. Le corps 4 de section carrée est inscriptible dans un tronc de cône et sa partie conique 7 se termine par une portion cylindrique 8 suivie d'un redent 9. Le corps 4 est traversé d'un trou circulaire taraudé 10 dans l'exemple choisi mais qui peut être lisse ou éventuellement de forme polygonale appropriée en fonction de la vis Il à utiliser et de ses couples admis. Le corps 4 est surmonté d'une tête 12 de forme adéquate qui sert de cache de finition et de butée au serrage. Referring to the drawings, an insert nut according to the invention consists of two complementary symmetrical parts 1 and 1A connected by a bead or hinge film 2; this film can be placed on the head or at the base of the piece. The two symmetrical parts 1 and 1A are folded on themselves and can be centered by male pins 3 and female 3A> as in this example. Once folded, this insert forms a compact block,
The insert thus formed is composed of a body 4 of polygonal and preferably quadrangular cross section (FIG. 3 showing four flat bearing surfaces 5, and whose four edges are chamfered in the example chosen to form other flat bearing surfaces 6 .In the case of elements in soft materials, the square section (fig.3) can be studied without cutting the edges of the square, or by creating redents parallel to the axis of the insert, this in order to better penetrate the insert in the element 14 and thus avoid any rotation The body 4 of square section is writable in a truncated cone and its conical portion 7 ends with a cylindrical portion 8 followed by a redent 9. The body 4 is through a circular threaded hole 10 in the example chosen but which may be smooth or possibly of appropriate polygonal shape depending on the screw to be used and its admitted couples.The body 4 is surmounted by a head 12 of shape adequate that serves as a cache of finishing and stop to tightening.
L'écrou ainsi réalisé est destiné à être inséré dans des orifices de forme circulaire 13 d'un élément 14 en une matière qui se prête à la déformation (plastique, bois > aggloméré de particules, etc ...). The nut thus produced is intended to be inserted into circular-shaped orifices 13 of an element 14 made of a material which is suitable for deformation (plastic, wood> chipboard, etc.).
L'insert selon l'invention peut être introduit par un système mécanique quelconque et même manuellement et est retenu dans l'orifice 13 par son redent 9 qui s'accroche sur la paroi 15 de l'orifice 13 de l'élément 14, lui permettant de rester en place durant le montage. The insert according to the invention can be introduced by any mechanical system and even manually and is retained in the orifice 13 by its redent 9 which clings to the wall 15 of the orifice 13 of the element 14, it to stay in place during assembly.
Convenablement dimensionné > ce redent 9 permet un clipsage, dès le montage de l'écrou insert sur l'élément. Ce clipsage peut être rendu élastique par le dimensionnement adéquat du film charnière 2 > alors situé à la base de l'écrou insert. Le système alors constitué est rendu imperdable par rapport à son élément support.Suitably sized> this redent 9 allows clipping, as soon as the insert nut is mounted on the element. This clipping can be made elastic by the adequate dimensioning of the hinge film 2> then located at the base of the insert nut. The system then constituted is rendered captive relative to its support element.
L'élément à fixer 14 est appliqué sur l'élément support 16 en regard d'un-orifice 17 de ce support dans lequel l'on présente une vis 11. La vis Il est vissée dans le trou fileté 10 de l'insert qui se trouve alors attiré par la vis Il suivant la flèche F. Le corps 4 commence à prendre appui sur la paroi 15 de l'élément 14, et au fur et à mesure de la traction de la vis 11, les portées plates 5 et 6 de la partie coni-que 7 s'incrustent dans hélé ment 14 afin d'emboutir la paroi 15 pour qu'elle colncide avec la forme du corps 4. La vis continue sa progression jusqu'au moment où la face 18 de la tête 12 vient en butée sur la face 19 de l'élément 14.La paroi 15 de l'orifice 13 se trouve ainsi calibrée avec le corps 4 de l'insert selon l'invention et interdit toute rotation durant le serrage. The element 14 to be fixed is applied to the support element 16 opposite an orifice 17 of this support in which a screw 11 is present. The screw It is screwed into the threaded hole 10 of the insert which is then attracted by the screw 11 following the arrow F. The body 4 begins to bear on the wall 15 of the element 14, and as and when the traction of the screw 11, the flat surfaces 5 and 6 of the coni-se part 7 s'incrustent in hélé ment 14 to stamp the wall 15 so that it colncide with the shape of the body 4. The screw continues its progression until the face 18 of the head 12 abuts on the face 19 of the element 14.The wall 15 of the orifice 13 is thus calibrated with the body 4 of the insert according to the invention and prohibits any rotation during clamping.
Une autre caractéristique de l'invention qui permet d'obtenir une résistance à l'arrachement importante lors d'assemblages demandant des efforts élevés sur des éléments 14 suffisamment incompressibles mais acceptant la pénétration de l'insert, réside en ce que l'insert est réalisé en une matière plastique dure mais douée d'une certaine élasticité, qui permet une légère rétraction du corps 4 par l'intermédiaire du trou fileté 10 sur la vis 11, ce qui apporte une compression supplémentaire sur la vis 11 et ainsi augmente la résistance à l'arrachement. Another characteristic of the invention that makes it possible to obtain a high resistance to tearing during assemblies requiring high forces on elements 14 which are sufficiently incompressible but accept the penetration of the insert, is that the insert is made of a hard plastic material but endowed with a certain elasticity, which allows a slight retraction of the body 4 through the threaded hole 10 on the screw 11, which provides additional compression on the screw 11 and thus increases the resistance to tearing.
Il est bien entendu que la présente invention n'a été décrite et représentée qu'à titre d'exemple pré- férentiel et que l'on pourra apporter des équivalences dans ses éléments constitutifs sans, pour autant, sortir du cadre de l'invention. It is understood that the present invention has been described and shown only as a preferred example and that it will be possible to provide equivalences in its constituent elements without departing from the scope of the invention. .
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8113165A FR2508994A1 (en) | 1981-07-03 | 1981-07-03 | Threaded insert for soft materials - has chamfered square section and is moulded in two halves |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8113165A FR2508994A1 (en) | 1981-07-03 | 1981-07-03 | Threaded insert for soft materials - has chamfered square section and is moulded in two halves |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2508994A1 true FR2508994A1 (en) | 1983-01-07 |
FR2508994B1 FR2508994B1 (en) | 1983-12-23 |
Family
ID=9260197
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8113165A Granted FR2508994A1 (en) | 1981-07-03 | 1981-07-03 | Threaded insert for soft materials - has chamfered square section and is moulded in two halves |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2508994A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5711645A (en) * | 1995-03-31 | 1998-01-27 | Nifco, Inc. | Connecting clip for toilet seat |
FR3002993A1 (en) * | 2013-03-05 | 2014-09-12 | Ct Tech Des Ind Mecaniques | VISSABLE ASSEMBLY MEMBER |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB845152A (en) * | 1958-05-22 | 1960-08-17 | Hall & Kay Ltd | Improvements in and relating to internally screwed bushes |
US2956605A (en) * | 1953-03-05 | 1960-10-18 | Illinois Tool Works | Plastic screw receiving insert having a circular body and a polygonal head |
FR1503338A (en) * | 1965-12-16 | 1967-11-24 | Illinois Tool Works | One-piece plastic fixing device |
GB1140109A (en) * | 1965-08-02 | 1969-01-15 | Tinnerman Products Inc | Improvements in plug insert or nut fastening devices |
FR2096245A5 (en) * | 1970-06-12 | 1972-02-11 | Amp Inc | |
GB1424065A (en) * | 1973-03-28 | 1976-02-04 | Sangamo Weston | Fastening devices |
-
1981
- 1981-07-03 FR FR8113165A patent/FR2508994A1/en active Granted
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2956605A (en) * | 1953-03-05 | 1960-10-18 | Illinois Tool Works | Plastic screw receiving insert having a circular body and a polygonal head |
GB845152A (en) * | 1958-05-22 | 1960-08-17 | Hall & Kay Ltd | Improvements in and relating to internally screwed bushes |
GB1140109A (en) * | 1965-08-02 | 1969-01-15 | Tinnerman Products Inc | Improvements in plug insert or nut fastening devices |
FR1503338A (en) * | 1965-12-16 | 1967-11-24 | Illinois Tool Works | One-piece plastic fixing device |
FR2096245A5 (en) * | 1970-06-12 | 1972-02-11 | Amp Inc | |
GB1424065A (en) * | 1973-03-28 | 1976-02-04 | Sangamo Weston | Fastening devices |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5711645A (en) * | 1995-03-31 | 1998-01-27 | Nifco, Inc. | Connecting clip for toilet seat |
FR3002993A1 (en) * | 2013-03-05 | 2014-09-12 | Ct Tech Des Ind Mecaniques | VISSABLE ASSEMBLY MEMBER |
Also Published As
Publication number | Publication date |
---|---|
FR2508994B1 (en) | 1983-12-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |