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FR2675859A1 - Washer with fastening teeth - Google Patents

Washer with fastening teeth Download PDF

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Publication number
FR2675859A1
FR2675859A1 FR9105066A FR9105066A FR2675859A1 FR 2675859 A1 FR2675859 A1 FR 2675859A1 FR 9105066 A FR9105066 A FR 9105066A FR 9105066 A FR9105066 A FR 9105066A FR 2675859 A1 FR2675859 A1 FR 2675859A1
Authority
FR
France
Prior art keywords
washer
teeth
cutout
groove
outer edge
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.)
Pending
Application number
FR9105066A
Other languages
French (fr)
Inventor
Leon Jean-Pierre Rene
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rapid SA
Original Assignee
Rapid SA
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 Rapid SA filed Critical Rapid SA
Priority to FR9105066A priority Critical patent/FR2675859A1/en
Publication of FR2675859A1 publication Critical patent/FR2675859A1/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B39/00Locking of screws, bolts or nuts
    • F16B39/22Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
    • F16B39/24Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by means of washers, spring washers, or resilient plates that lock against the object
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B43/00Washers or equivalent devices; Other devices for supporting bolt-heads or nuts
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/26Connections in which at least one of the connecting parts has projections which bite into or engage the other connecting part in order to improve the contact

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bolts, Nuts, And Washers (AREA)

Abstract

The present invention relates to a washer with fastening teeth. This washer includes, on its outer edge, a plurality of double teeth (1-1a ... 8-8a) defined by a radial groove or cutout (11) exhibiting a U-shape emerging towards the outside of the washer, so as thus to produce a multitude of teeth capable of anchoring on a support in order to ensure good electrical earthing conductibility and good stability of the fastening produced with the washer. This washer finds an application particularly in screwed assemblies.

Description

La présente invention a essentiellement pour objet une rondelle dont le bord extérieur est pourvu d'une pluralité de dents ou analogues d'accrochage. The present invention essentially relates to a washer whose outer edge is provided with a plurality of teeth or the like for hooking.

On connut déjà des rondelles dont au moins la périphérie externe est munie d'une pluralité de dents d'accrochage qui sont obtenues par une déformation effectuée sur l'une des faces de la rondelle et qui font saillie de l'autre face de cette rondelle. Washers have already been known of which at least the outer periphery is provided with a plurality of hooking teeth which are obtained by a deformation carried out on one of the faces of the washer and which project from the other face of this washer. .

Toutefois, malgré la présence de dents, ce genre de rondelle utilisé notamment dans les assemblages vissés, ne s'accroche pas toujours solidement sur les supports, de sorte que la stabilité et la conductibilité électrique de masse de la fixation laissent parfois à désirer. However, despite the presence of teeth, this type of washer used in particular in screwed assemblies, does not always hang securely on the supports, so that the stability and the electrical mass conductivity of the fastener sometimes leave something to be desired.

Aussi, la présente invention a pour but de remédier à ces inconvénients en proposant une rondelle assurant une meilleure conductibilité électrique et un meilleur positionnement par rapport aux rondelles de l'art antérieur. Also, the present invention aims to remedy these drawbacks by providing a washer ensuring better electrical conductivity and better positioning relative to the washers of the prior art.

A cet effet, 1 invention a pour objet une rondelle dont le bord extérieur est pourvu d'une pluralité de dents d'accrochage qui sont obtenues par un poinçonnage ou analogue effectué sur l'une des faces de la rondelle et qui font saillie de l'autre face de cette rondelle, caractérisée en ce que dans chaque dent est pratiquée une découpe ou rainure radiale dédoublant ainsi chaque dent pour procurer une meilleure conductibilité électrique et une meilleure stabilité de la fixation réalisée avec cette rondelle. To this end, 1 invention relates to a washer whose outer edge is provided with a plurality of hooking teeth which are obtained by punching or the like carried out on one of the faces of the washer and which protrude from the 'other face of this washer, characterized in that in each tooth is made a cutout or radial groove thus splitting each tooth to provide better electrical conductivity and better stability of the attachment made with this washer.

Suivant une autre caractéristique de l'invention, la découpe ou rainure précitée présente une forme de U ou de V débouchant vers l'extérieur de la rondelle. According to another characteristic of the invention, the aforementioned cutout or groove has a U or V shape opening towards the outside of the washer.

Suivant un mode de réalisation préféré, le poinçonnage de la rondelle est effectué sur une face convexe de celle-ci, tandis que du bord extérieur de l'autre face concave de la rondelle font saillie une pluralité de dents doubles et acérées du fait de la présence de la découpe ou rainure précitée. According to a preferred embodiment, the punching of the washer is carried out on a convex face thereof, while from the outer edge of the other concave face of the washer protrude a plurality of double and sharp teeth due to the presence of the aforementioned cutout or groove.

Mais d'autres avantages et caractéristiques de l'invention appratront mieux dans la description détaillée qui suit et se réfère aux dessins annexés, donnés uniquement à titre d'exemple, et dans lesquels
- la figure 1 est une vue en plan de dessus de la face concave de la rondelle, suivant la flèche I de la figure 2
- la figure 2 est une vue en coupe axiale de cette rondelle suivant la ligne II-II de la figure 1 ; et
- la figure 3 est une vue partielle, agrandie et en perspective de la rondelle, suivant la flèche III de la figure 2.
However, other advantages and characteristics of the invention will become clearer in the detailed description which follows and which refers to the appended drawings, given solely by way of example, and in which
- Figure 1 is a top plan view of the concave face of the washer, along arrow I in Figure 2
- Figure 2 is an axial sectional view of this washer along the line II-II of Figure 1; and
FIG. 3 is a partial view, enlarged and in perspective of the washer, according to arrow III in FIG. 2.

Suivant un exemple de réalisation, et en se reportant aux dessins annexés, une rondelle conforme à cette invention comprend une pluralité de doubles dents 1-1a, 2-2a, 3-3a, ...8-8a prévues sur le bord ou périphérie 10 de la rondelle, les deux dents de chaque paire de dents étant séparées par une petite découpe ou rainure radiale 11. According to an exemplary embodiment, and with reference to the accompanying drawings, a washer according to this invention comprises a plurality of double teeth 1-1a, 2-2a, 3-3a, ... 8-8a provided on the edge or periphery 10 of the washer, the two teeth of each pair of teeth being separated by a small cutout or radial groove 11.

Les doubles dents 1-la... 8-8a font saillie du côté de la face concave 12 de la rondelle, étant donné que ces dents sont réalisées par un poinçonnage ou analogue effectué sur l'autre face convexe 13 de la rondelle, et cela au niveau du bord extérieur 10, comme on le voit en 14 sur les figures 2 et 3. The double teeth 1-la ... 8-8a project from the side of the concave face 12 of the washer, since these teeth are produced by punching or the like carried out on the other convex face 13 of the washer, and this at the outer edge 10, as seen at 14 in FIGS. 2 and 3.

Le poinçonnage 14 provoque par conséquent une déformation et une poussée de la matière du bord 10 de la rondelle vers la face concave 12, comme on le voit bien sur la figure 3, de sorte qu'après avoir réalisé la découpe ou rainure 11, les doubles dents 1-la... 8-8a forment chacune une pointe acérée susceptible de mordre le support sur lequel s'applique la rondelle, sous l'effet d'une action de vissage par exemple. On réalise ainsi une bonne conductibilité électrique de masse de la fixation, ainsi qu'un positionnement solide de cette fixation et de la rondelle qui est en quelque sorte ancrée dans le support. The punching 14 consequently causes a deformation and a pushing of the material from the edge 10 of the washer towards the concave face 12, as can be seen in FIG. 3, so that after having made the cutout or groove 11, the double teeth 1-la ... 8-8a each form a sharp point capable of biting the support on which the washer is applied, under the effect of a screwing action for example. This produces good electrical ground conductivity of the binding, as well as solid positioning of this binding and of the washer which is somehow anchored in the support.

La découpe ou rainure 11 dans le bord extérieur 10 de la rondelle et définissant les doubles dents 1-la... The cutout or groove 11 in the outer edge 10 of the washer and defining the double teeth 1-la ...

8-8a présente, comme on le voit bien sur les figures, une forme de U, ou encore une forme de V débouchant vers l'extérieur de la rondelle.8-8a has, as can be seen in the figures, a U shape, or a V shape opening outwards from the washer.

Cette rondelle, comme cela est bien connu en soi, comporte en son centre un orifice 15 pour le passage d'un élément fileté, tel qu'une vis par exemple. This washer, as is well known per se, has at its center an orifice 15 for the passage of a threaded element, such as a screw for example.

Il est important d'insister sur le fait que la découpe ou rainure 11, non seulement permet de multiplier le nombre de dents d'accrochage, mais confère à ces dents la forme de pointes acérées bien visibles en 20 sur la figure 3 et procurant à la rondelle toutes les qualités requises d'accrochage et de bon contact de masse. It is important to insist on the fact that the cutout or groove 11 not only makes it possible to multiply the number of hooking teeth, but gives these teeth the shape of sharp points which are clearly visible at 20 in FIG. 3 and providing the washer all the qualities required for attachment and good ground contact.

Bien entendu, l'invention n'est nullement limitée au mode de réalisation décrit et illustré qui n'a été donné qu'à titre d'exemple. Of course, the invention is in no way limited to the embodiment described and illustrated, which has been given only by way of example.

C'est ainsi que le nombre de doubles dents peut être quelconque, de même que la forme et la profondeur de la découpe ou rainure définissant ces dents, en fonction de la fixation à réaliser. This is how the number of double teeth can be arbitrary, as well as the shape and the depth of the cutout or groove defining these teeth, depending on the attachment to be produced.

C'est dire que l'invention comprend tous les équivalents techniques des moyens décrits ainsi que leurs combinaisons si celles-ci sont effectuées suivant son esprit.  This means that the invention includes all the technical equivalents of the means described, as well as their combinations if these are carried out according to the spirit.

Claims (3)

REVENDICATIONS 1. Rondelle dont le bord extérieur (10) est pourvu d'une pluralité de dents d'accrochage qui sont obtenues par un poinçonnage ou analogue effectué sur l'une (13) des faces de la rondelle et qui font saillie de l'autre face (12) de cette rondelle, caractérisée en ce que dans chaque dent est pratiquée une découpe ou rainure radiale (11) dédoublant ainsi chaque dent pour procurer une meilleure conductibité électrique et une meilleure stabilité de la fixation réalisée avec cette rondelle. 1. Washer whose outer edge (10) is provided with a plurality of hooking teeth which are obtained by punching or the like carried out on one (13) of the faces of the washer and which project from the other face (12) of this washer, characterized in that a radial cutout or groove (11) is made in each tooth, thus dividing each tooth in order to provide better electrical conductivity and better stability of the fixing produced with this washer. 2. Rondelle selon la revendication 1, caractérisée en ce que la découpe ou rainure précitée (11) présente une forme de U ou de V débouchant vers l'extérieur de la rondelle. 2. Washer according to claim 1, characterized in that the aforementioned cutout or groove (11) has a U or V shape opening towards the outside of the washer. 3. Rondelle selon la revendication 1 ou 2, caractérisée en ce que le poinçonnage précité (14) est effectué sur une face convexe (13) de la rondelle, tandis que du bord extérieur (10) de l'autre face concave (13) de la rondelle font saillie une pluralité de dents doubles et acérées (1-la... 8-8a) du fait de la présence de la découpe ou rainure précitée (11).  3. Washer according to claim 1 or 2, characterized in that the aforementioned punching (14) is carried out on a convex face (13) of the washer, while the outer edge (10) of the other concave face (13) from the washer protrude a plurality of double and sharp teeth (1-la ... 8-8a) due to the presence of the aforementioned cutout or groove (11).
FR9105066A 1991-04-24 1991-04-24 Washer with fastening teeth Pending FR2675859A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9105066A FR2675859A1 (en) 1991-04-24 1991-04-24 Washer with fastening teeth

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9105066A FR2675859A1 (en) 1991-04-24 1991-04-24 Washer with fastening teeth

Publications (1)

Publication Number Publication Date
FR2675859A1 true FR2675859A1 (en) 1992-10-30

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ID=9412213

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9105066A Pending FR2675859A1 (en) 1991-04-24 1991-04-24 Washer with fastening teeth

Country Status (1)

Country Link
FR (1) FR2675859A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29518461U1 (en) * 1995-11-21 1996-01-11 Upat Gmbh & Co, 79312 Emmendingen Fastening element, in particular for fastening an insulation layer or roof waterproofing membrane to a substructure
EP0849827A4 (en) * 1995-09-04 1998-11-18 Nakasu Denki Kabushikigaisya PART AND INSTRUMENT TO ACHIEVE CONDUCTIVITY IN AN ELECTRICAL CONNECTION
FR2907970A1 (en) * 2006-10-30 2008-05-02 Peugeot Citroen Automobiles Sa Mechanical joint for connecting metallic sheets of vehicle's body shell, has points with cover, coated with product e.g. gel or grease, where electrical conduction is ensured between head and washer and between screw and lower sheet

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1865132A (en) * 1930-07-31 1932-06-28 Shakeproof Lock Washer Co Lock washer for countersunk screws
FR2022050A1 (en) * 1968-10-31 1970-07-24 Luk Lamellen & Kupplungsbau
CA969846A (en) * 1972-11-02 1975-06-24 Julius P. Andrasik Reducing assembly
US4034788A (en) * 1975-12-19 1977-07-12 Elco Industries, Inc. Fastener assembly

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1865132A (en) * 1930-07-31 1932-06-28 Shakeproof Lock Washer Co Lock washer for countersunk screws
FR2022050A1 (en) * 1968-10-31 1970-07-24 Luk Lamellen & Kupplungsbau
CA969846A (en) * 1972-11-02 1975-06-24 Julius P. Andrasik Reducing assembly
US4034788A (en) * 1975-12-19 1977-07-12 Elco Industries, Inc. Fastener assembly

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0849827A4 (en) * 1995-09-04 1998-11-18 Nakasu Denki Kabushikigaisya PART AND INSTRUMENT TO ACHIEVE CONDUCTIVITY IN AN ELECTRICAL CONNECTION
JP3060116B2 (en) 1995-09-04 2000-07-10 中洲電機株式会社 Members and tools used for electrical connection and for obtaining electrical conductivity
DE29518461U1 (en) * 1995-11-21 1996-01-11 Upat Gmbh & Co, 79312 Emmendingen Fastening element, in particular for fastening an insulation layer or roof waterproofing membrane to a substructure
FR2907970A1 (en) * 2006-10-30 2008-05-02 Peugeot Citroen Automobiles Sa Mechanical joint for connecting metallic sheets of vehicle's body shell, has points with cover, coated with product e.g. gel or grease, where electrical conduction is ensured between head and washer and between screw and lower sheet

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