FR2594910A1 - Locking washer for nuts - Google Patents

Locking washer for nuts Download PDF

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Publication number
FR2594910A1
FR2594910A1 FR8602386A FR8602386A FR2594910A1 FR 2594910 A1 FR2594910 A1 FR 2594910A1 FR 8602386 A FR8602386 A FR 8602386A FR 8602386 A FR8602386 A FR 8602386A FR 2594910 A1 FR2594910 A1 FR 2594910A1
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FR
France
Prior art keywords
washer
nut
nuts
locking washer
tabs
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
Application number
FR8602386A
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French (fr)
Other versions
FR2594910B1 (en
Inventor
Victor Laurent Lucaire
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.)
Mecafrance SA
Original Assignee
Mecafrance 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 Mecafrance SA filed Critical Mecafrance SA
Priority to FR8602386A priority Critical patent/FR2594910B1/en
Publication of FR2594910A1 publication Critical patent/FR2594910A1/en
Application granted granted Critical
Publication of FR2594910B1 publication Critical patent/FR2594910B1/en
Expired legal-status Critical Current

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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
    • F16B39/02Locking of screws, bolts or nuts in which the locking takes place after screwing down
    • F16B39/10Locking of screws, bolts or nuts in which the locking takes place after screwing down by a plate, spring, wire or ring immovable with regard to the bolt or object and mainly perpendicular to the axis of the bolt
    • F16B39/108Locking of screws, bolts or nuts in which the locking takes place after screwing down by a plate, spring, wire or ring immovable with regard to the bolt or object and mainly perpendicular to the axis of the bolt with a locking washer under the nut or bolt head having at least one tongue or lug folded against the nut or bolt head, or against the object itself

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

Abstract

Locking washer for a nut of the type of those comprising means making it possible to immobilise it rotationally with respect to the screw, characterised in that the washer 1 has, at least two tabs 2 turned down in the same direction, substantially at a right angle. The distance separating the ends of the tabs 2 is slightly less than the dimension of the nut across the flats.

Description

La présente invention est relative à une rondelle de blocage pour écrous. The present invention relates to a locking washer for nuts.

Dans les assemblages mécaniques effectués- par vis et écrou, il est souvent nécessaire de prévoir des dispositifs s'opposant de façon absolue au desserrage de l'écrou. In mechanical assemblies made with screws and nuts, it is often necessary to provide devices which are absolutely opposed to the loosening of the nut.

A cet effet, on utilise généralement une rondelle plate qui est interposée entre la surface d'appui et l'écrou, ladite rondelle présentant des moyens permettant son immobilisation en rotation par rapport à la vis et une languette radiale s'étendant au-delà de la périphérie de l'écrou sensiblement dans le plan de la rondelle. Lorsque l'écrou est bloqué, on relève la languette à angle droit pour la plaquer contre un pan de l'écrou. For this purpose, a flat washer is generally used which is interposed between the bearing surface and the nut, said washer having means allowing it to immobilize in rotation relative to the screw and a radial tongue extending beyond the periphery of the nut substantially in the plane of the washer. When the nut is locked, the tongue is raised at a right angle to press it against a side of the nut.

Ce dispositif est très efficace mais il présente deux inconvénients majeurs. This device is very effective but it has two major drawbacks.

En premier lieu, il faut signaler que l'opération consistant à relever la languette de verrouillage est malaisée à réaliser. First, it should be noted that the operation of raising the locking tab is difficult to perform.

En second lieu, on a constaté qu'un tel assemblage était pratiquement indémontable et que, même si on parvenait à libérer l'écrou en écartant la languette de la périphérie de ce dernier, une telle manoeuvre était généralement destructrice et que la rondelle ne pouvait pas être utilisée à nouveau. Secondly, it was found that such an assembly was practically impossible to dismantle and that, even if the nut could be released by spreading the tongue from the periphery of the latter, such an operation was generally destructive and that the washer could not not be used again.

La présente invention, qui remédie à ces inconvénients, est remarquable en ce que la rondelle présente deux pattes rabattues sensiblement à angle droit et diamétralement opposées. The present invention, which overcomes these drawbacks, is remarkable in that the washer has two legs folded down substantially at right angles and diametrically opposite.

Lorsque l'écrou est bloqué, on engage la rondelle sur la vis et ses deux pattes viennent s'étendre le long de deux pans opposés de l'écrou. When the nut is blocked, the washer is engaged on the screw and its two tabs extend along two opposite sides of the nut.

L'invention sera mieux comprise par la description qui va suivre. faite en se référant au dessin annexé à titre d'exemple indicatif seulement, sur lequel
La figure 1 est une vue en perspective d'une rondelle de blocage conforme à l'invention ;
La figure 2 montre, en coupe, l'utilisation de la rondelle de la figure 1
La figure 3 est la vue de dessus de la figure 2:
La figure 4 est une vue analogue à celle 2, la rondelle étant appliquée à un assemblage à contre-écrou.
The invention will be better understood from the description which follows. made with reference to the accompanying drawing as an indicative example only, in which
Figure 1 is a perspective view of a locking washer according to the invention;
Figure 2 shows, in section, the use of the washer of Figure 1
Figure 3 is the top view of Figure 2:
Figure 4 is a view similar to that 2, the washer being applied to a lock nut assembly.

En se reportant à la figure 1 on voit que la rondelle 1 présente deux pattes 2 diamétralement opposées et rabattues sensiblement à angle droit. Referring to Figure 1 we see that the washer 1 has two tabs 2 diametrically opposite and folded substantially at right angles.

En son centre, la rondelle 1 présente un orifice 3 oblong, permettant son engagement et son immobilisation en rotation sur une vis 4 sur laquelle on a prévu deux méplats 5 usuels. In its center, the washer 1 has an oblong orifice 3, allowing its engagement and its immobilization in rotation on a screw 4 on which two usual flats 5 have been provided.

Naturellement, la rondelle 1 pourrait présenter un trou central,circulaire,comportant un ergot radial pour s'on immobilisation.en rotation,sur une vis pourvue d'une rainure longitudinale usuelle. Naturally, the washer 1 could have a central, circular hole, comprising a radial lug for being immobilized in rotation, on a screw provided with a usual longitudinal groove.

Lorsque l'écrou 6 est bloqué, on engage la rondelle 1 sur la vis 4 jusqu'au contact avec le face supérieure de l'écrou. When the nut 6 is blocked, the washer 1 is engaged on the screw 4 until contact with the upper face of the nut.

Durant cette opération, les pattes 2 se placent le long de deux pans opposés dudit écrou et s'opposent, de ce fait, à une rotation ultérieure de ce dernier.During this operation, the tabs 2 are placed along two opposite sides of said nut and are therefore opposed to a subsequent rotation of the latter.

De préférence, les deux pattes 2 sont resserrées vers leurs extrémités de façon à ce que la distance séparant lesdites extrémités soit légèrement inférieure à la cote sur plat de 1 'écrou.  Preferably, the two tabs 2 are tightened towards their ends so that the distance separating said ends is slightly less than the dimension on the flat side of the nut.

De cette façon, les pattes enserrent élastiquement l'écrou. In this way, the legs resiliently grip the nut.

Cette mesure peut être renforcée si les angles 7 des pattes 2 sont légèrement recourbés vers l'intérieur (non représenté). This measurement can be reinforced if the angles 7 of the legs 2 are slightly curved inward (not shown).

Ainsi , et compte tenu de la forme des écrous hexagonaux normalisés, les pattes 2 peuvent s'accrocher élastiquement sous écrou.  Thus, and taking into account the shape of the standard hexagonal nuts, the tabs 2 can be hooked elastically under the nut.

Comme montré sur la figure 4, la rondelle de blocage de l'invention peut être avantageusement utilisée lors d'un assemblage à contre-écrou. As shown in Figure 4, the locking washer of the invention can be advantageously used during assembly with a lock nut.

En effet, en plaçant une rondelle de blocage sur le premier écrou, il n'est plus nécessaire d'utiliser une clé pour immobiliser celui-ci lors du blocage du contre-écrou. Indeed, by placing a locking washer on the first nut, it is no longer necessary to use a wrench to immobilize the latter when the lock nut is blocked.

L'emploi de la rondelle de l'invention n'est pas limitée aux écrous hexagonaux normalisés mais peut s'étendre à tous les écrous pour autant que ceux-ci présentent deux pans parallèles à leur périphérie. The use of the washer of the invention is not limited to standard hexagonal nuts but can extend to all nuts provided that these have two parallel sides at their periphery.

Bien entendu, si la configuration de l'écrou s'y prête, la rondelle de blocage peut présenter plusieurs paires de pattes 2. Of course, if the configuration of the nut is suitable, the locking washer may have several pairs of lugs 2.

Enfin, dans l'hypothèse d'écrous spéciaux, on peut aussi prévoi trois ou cinq pattes, par exemple, sur la rondelle.  Finally, in the case of special nuts, we can also use three or five tabs, for example, on the washer.

Claims (3)

REVENDICATIONS l-Rondelle de blocage pour écrous du genre de celles comportant des moyens permettant de l'immobiliser en rotation par rapport à la vis, caractérisée en ce que la rondelle (1) présente, au moins, deux pattes (2) rabattues dans le même sens, sensiblement à angle droit. l-Locking washer for nuts of the kind comprising those making it possible to immobilize it in rotation relative to the screw, characterized in that the washer (1) has, at least, two tabs (2) folded in the same sense, substantially at right angles. 2-Rondelle de blocage,selon la revendication l,caractérisée en ce que la distance séparant les extrémités des pattes (2) est légèrement inférieure à la cote sur plat de l'écrou.  2-Locking washer, according to claim l, characterized in that the distance between the ends of the legs (2) is slightly less than the dimension on the flat of the nut. 3-Rondelle de blocage selon l'une quelconque des revendications 1 et 2, caractérisée en ce que les angles (7) des pattes (2) sont légèrement recourbés vers l'intérieur.  3-Locking washer according to any one of claims 1 and 2, characterized in that the angles (7) of the legs (2) are slightly curved inward.
FR8602386A 1986-02-21 1986-02-21 LOCK WASHER FOR NUTS Expired FR2594910B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8602386A FR2594910B1 (en) 1986-02-21 1986-02-21 LOCK WASHER FOR NUTS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8602386A FR2594910B1 (en) 1986-02-21 1986-02-21 LOCK WASHER FOR NUTS

Publications (2)

Publication Number Publication Date
FR2594910A1 true FR2594910A1 (en) 1987-08-28
FR2594910B1 FR2594910B1 (en) 1988-08-12

Family

ID=9332377

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8602386A Expired FR2594910B1 (en) 1986-02-21 1986-02-21 LOCK WASHER FOR NUTS

Country Status (1)

Country Link
FR (1) FR2594910B1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998022723A1 (en) * 1996-11-18 1998-05-28 Bertrand Faure Sitztechnik Gmbh & Co. Kg Ring-shaped safety element
DE10109660B4 (en) * 2001-02-28 2008-10-30 Volkswagen Ag Circlip and mounting device for a shaft-hub connection
CN102705335A (en) * 2012-06-14 2012-10-03 昆山维金五金制品有限公司 Gasket for rotating shaft
CN108506322A (en) * 2017-02-28 2018-09-07 林志厚 A kind of check bolt connection method for living hinge

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2013526A (en) * 1930-11-03 1935-09-03 William H Schmitt Nut lock washer
US2189654A (en) * 1936-09-22 1940-02-06 Enterprise Mfg Co Nut lock
DE808308C (en) * 1949-10-29 1951-07-12 Carl Arnold Dipl Ing Screw locking

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2013526A (en) * 1930-11-03 1935-09-03 William H Schmitt Nut lock washer
US2189654A (en) * 1936-09-22 1940-02-06 Enterprise Mfg Co Nut lock
DE808308C (en) * 1949-10-29 1951-07-12 Carl Arnold Dipl Ing Screw locking

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998022723A1 (en) * 1996-11-18 1998-05-28 Bertrand Faure Sitztechnik Gmbh & Co. Kg Ring-shaped safety element
US6116837A (en) * 1996-11-18 2000-09-12 Bertrand Faure Sitztechnik Gmbh & Co. Kg Ring-shaped safety element
DE10109660B4 (en) * 2001-02-28 2008-10-30 Volkswagen Ag Circlip and mounting device for a shaft-hub connection
CN102705335A (en) * 2012-06-14 2012-10-03 昆山维金五金制品有限公司 Gasket for rotating shaft
CN108506322A (en) * 2017-02-28 2018-09-07 林志厚 A kind of check bolt connection method for living hinge

Also Published As

Publication number Publication date
FR2594910B1 (en) 1988-08-12

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