FR2582064A1 - Nut with an integral elastic zone - Google Patents

Nut with an integral elastic zone Download PDF

Info

Publication number
FR2582064A1
FR2582064A1 FR8507479A FR8507479A FR2582064A1 FR 2582064 A1 FR2582064 A1 FR 2582064A1 FR 8507479 A FR8507479 A FR 8507479A FR 8507479 A FR8507479 A FR 8507479A FR 2582064 A1 FR2582064 A1 FR 2582064A1
Authority
FR
France
Prior art keywords
nut
face
recess
elastic zone
zone
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
FR8507479A
Other languages
French (fr)
Other versions
FR2582064B1 (en
Inventor
Jean-Pierre Grassineau
Oreste Mauro
Michel Tulasne
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.)
Renault SAS
Regie Nationale des Usines Renault
Original Assignee
Renault SAS
Regie Nationale des Usines Renault
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 Renault SAS, Regie Nationale des Usines Renault filed Critical Renault SAS
Priority to FR8507479A priority Critical patent/FR2582064B1/en
Priority to DE8686401049T priority patent/DE3668482D1/en
Priority to EP86401049A priority patent/EP0203007B1/en
Priority to ES1986294176U priority patent/ES294176Y/en
Publication of FR2582064A1 publication Critical patent/FR2582064A1/en
Application granted granted Critical
Publication of FR2582064B1 publication Critical patent/FR2582064B1/en
Expired legal-status Critical Current

Links

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
    • F16B39/00—Locking of screws, bolts or nuts
    • F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
    • F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
    • 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
    • F16B39/00—Locking of screws, bolts or nuts
    • F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
    • F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
    • F16B39/284—Locking by means of elastic deformation

Landscapes

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

Abstract

Nut 1 with an integral elastic zone, especially for mechanical assembly with a small diametric bulk with respect to the diameter of the thread 8, characterised in that it comprises, on the side of the bearing face 5, a counterbore 4 associated with an elastic annular part 3 whose bore 12 is dimensioned so as to allow the threaded end, to which the said nut 1 is fastened, to pass through freely.

Description

ECROU A ZONE ELASTIQUE INTEGRE
L'invention est relative à un écrou à zone déformable intégrée, qui comprend un chambrage d' élasticité.NUT WITH INTEGRATED ELASTIC ZONE
The invention relates to a nut with integrated deformable zone, which comprises a recess of elasticity.

On connaît de nombreux dispositifs de fixation qui comportent un écrou freiné, en vue d' éviter tout dessérage intempestif. Certain de ces dispositifs proposent d' associer une rondelle du type Belleville à un écrou. Ces systèmes présentent l'inconvénient d'offrir un serrage avec une très grande variation de la force, quand il y a un faible écart de la dimension totale d1 un empilage mécanique de pièces, cette écart de dimension pouvant atteindre facilement plusieurs dizième de milimètres dans les cas courants.Numerous fastening devices are known which include a lock nut, in order to avoid any untimely loosening. Some of these devices propose to associate a Belleville type washer with a nut. These systems have the disadvantage of offering a tightening with a very large variation of the force, when there is a small difference in the total dimension of a mechanical stacking of parts, this difference in dimension being able to easily reach several tenths of a millimeter in common cases.

D' autres systèmes de blocage proposent des empilages de rondelles du type Belleville, qui sont intégrés dans une enceinte en tôle, afin de constituer un écrou. Chacune des rondelles de l' empilage a sa partie interne, qui pénètre dans le filet de la vis, et qui constitue ainsi un filetage intérieur. Ces systèmes de blocage présentent une variation de tension faible et acceptable pour les varaiations courantes des dimensions globales d' un empilage mécanique, mais ils en prennent une grande perte par frottement des faces des rondelles les unes sur les autres. De plus, ce phénomène de frottement est aléatoire, et il y a toujours une hystérisis.Enfin, quand on définit un couple de serrage, on ne sait pas qu' elle partie de ce couple est perdue dans les frottements, et qu' elle est la valeur du couple restant, c' est-à-dire du couple utile de tension pour le blocage de l' empilage des pièces mécaniques. Other blocking systems propose stacks of Belleville type washers, which are integrated in a sheet metal enclosure, in order to constitute a nut. Each of the washers of the stack has its internal part, which penetrates into the thread of the screw, and which thus constitutes an internal thread. These blocking systems exhibit a small and acceptable variation in tension for the current variations in the overall dimensions of a mechanical stack, but they take a great loss from them by friction of the faces of the washers on each other. In addition, this friction phenomenon is random, and there is always a hysterisis. Finally, when we define a tightening torque, we do not know that it part of this torque is lost in friction, and that it is the value of the remaining torque, that is to say the useful tension torque for blocking the stacking of the mechanical parts.

Le but de la présente invention est de proposer un écrou, qui permet en partant d' un couple de serrage déterminé, d' avoir un couple utile de tension précis ; cette tension sur l' empilage mécanique des pièces étant peu sensible à la variation des tolérances de chacune des pièces de cet empilage mécanique. The object of the present invention is to propose a nut, which makes it possible, starting from a determined tightening torque, to have a useful torque of precise tension; this tension on the mechanical stacking of the pieces being little sensitive to the variation of the tolerances of each of the pieces of this mechanical stacking.

Selon un mode de réalisation de l'invention, l' écrou à zone élastique intégré, notamment pour assemblage mécanique avec un faible encombrement diamètral par rapport au diamètre du filetage, comporte du c8té de la face d' appui, un chambrage associé à une partie annulaire élastique. Cette partie annulaire élastique a un alésage, qui est dimensionné de manière à laisser passer librement l' extrémité filetée sur laquelle vient se fixer l' écrou. According to one embodiment of the invention, the nut with integrated elastic zone, in particular for mechanical assembly with a small diametrical size compared to the diameter of the thread, comprises on the side of the bearing face, a recess associated with a part elastic ring. This elastic annular part has a bore, which is dimensioned so as to allow free passage of the threaded end on which the nut is fixed.

Selon un mode de réalisation de l'invention, le chambrage est constitué par une face externe perpendiculaire à l' axe de l' écrou, et par une face interne ; la face externe et la face interne étant reliée l' une à l' autre par une partie arrondie.According to one embodiment of the invention, the recess consists of an external face perpendicular to the axis of the nut, and by an internal face; the external face and the internal face being connected to each other by a rounded part.

Selon un mode de réalisation de l' invention, la face interne est conique.According to one embodiment of the invention, the internal face is conical.

Selon un mode de réalisation de l' invention, la face d' appui est conique, de manière à assurer une zone d1 application de l' effort de tension sur toute ladite face d'appui.According to one embodiment of the invention, the bearing face is conical, so as to ensure an area of application of the tension force over all of said bearing face.

L' écrou à zone élastique intégré selon l'invention, présente ainsi
Il avantage d'avoir une faible raideur, ce qui lui permet d'assurer un serrage correct d' un empilage mécanique, quel que soit l' écart acceptable des tolérances de cet empilage mécanique. De plus, l' écrou selon l'invention est en une seule pièce, ce qui évite la plupart des pertes par frottements ; le couple de serrage est presque totalement utilisé ; et l' écrou selon l' invention a de ce fait un excellent rendement.The nut with integrated elastic zone according to the invention, thus presents
It has the advantage of having a low stiffness, which allows it to ensure correct clamping of a mechanical stack, whatever the acceptable deviation from the tolerances of this mechanical stack. In addition, the nut according to the invention is in one piece, which avoids most of the friction losses; the tightening torque is almost completely used; and the nut according to the invention therefore has an excellent yield.

L'invention sera mieux comprise par l' étude d1 un mode de rélaisation particulier décrit à titre nullement limitatif et illustré par les dessins annexés, sur lesquels - la figure 1 est une coupe de l' écrou selon l'invention - la figure 2 est une vue suivant Il de la figure l - la figure 3 est une coupe de l' écrou selon un autre mode de
réalisation de l'invention - la figure 4 est une coupe d' un exemple d' assemblage mécanique
réalisé avec un écrou selon l' invention. The invention will be better understood by studying a particular mode of connection described by way of non-limiting example and illustrated by the appended drawings, in which - FIG. 1 is a section of the nut according to the invention - FIG. 2 is a view along II of FIG. 1 - FIG. 3 is a section of the nut according to another mode of
embodiment of the invention - Figure 4 is a section of an example of mechanical assembly
produced with a nut according to the invention.

Les figures 1 et 2 représentent un écrou l à zone déformaMe intégrée selon l'invention. Cet écrou l à zone élastique intégrée, comporte un corps 2, qui est muni d'un chambrage 4, ledit chambrage 4 étant associé à une partie annulaire 3 élastique. Ce chambrage 4 et cette partie annulaire 3 sont disposés du côté de la face d'appui 5 de l'écrou 1, qui agit sur l'empilage mécanique à serré.Figures 1 and 2 show a nut l with integrated deformation zone according to the invention. This nut l with integrated elastic zone, comprises a body 2, which is provided with a recess 4, said recess 4 being associated with an elastic annular part 3. This recess 4 and this annular part 3 are arranged on the side of the bearing face 5 of the nut 1, which acts on the mechanical stacking to be tight.

L' écrou l a une face d' extrémité 6, qui est plate et généralement perpendiculaire à l' axe 15 dudit écrou 1 ; tandis que la face latérale 7 peut être d' une forme quelconque, selon le mode de serrage adopté. Dans le cas des figures, cette face latérale 7 est exagonale. De plus, Il écrou l est muni de deux chenfreins 13, qui sont disposés sur chacune des faces d' appui 5 et d' extrémité 6. The nut 1 has an end face 6, which is flat and generally perpendicular to the axis 15 of said nut 1; while the lateral face 7 can be of any shape, depending on the method of tightening adopted. In the case of the figures, this lateral face 7 is exagonal. In addition, it nut l is provided with two chamfers 13, which are arranged on each of the bearing faces 5 and end 6.

La partie annulaire 3 a un alésage 12, qui est dimensionné de manière à laisser passer librement l' extrémité filetée 14, sur laquelle vient se fixer ledit écrou 1 ; est-à-dire que cet alésage 12 est dans la plupart des cas légèrement plus grand que le diamètre du filetage 8 de l'écrou l. The annular part 3 has a bore 12, which is dimensioned so as to allow free passage of the threaded end 14, on which said nut 1 is fixed; that is to say, this bore 12 is in most cases slightly larger than the diameter of the thread 8 of the nut l.

Le chambrage 4 a une face externe 9 qui est sensiblement
perpendiculaire à l' axe 15, et une face interne 10 conique. La face
externe 9 et la face interne 10 sont reliées par une partie arrondie
11. Le chambrage 4 et la partie annulaire 3 sont dimensionnés de manière à avoir la raideur voulue pour le serrage mécanique demandé.The recess 4 has an external face 9 which is substantially
perpendicular to the axis 15, and an internal face 10 conical. The face
external 9 and internal face 10 are connected by a rounded part
11. The recess 4 and the annular part 3 are dimensioned so as to have the desired stiffness for the required mechanical tightening.

L' écrou l selon l'invention est appliqué notamment pour des assemblages mécaniques, où il doit présenter un faible encombrement diamètrale par rapport au diamètre du filetage 8.The nut l according to the invention is applied in particular for mechanical assemblies, where it must have a small overall diameter relative to the diameter of the thread 8.

La figure 4 montre un exemple de montage où l' assemblage mécanique est réalisé avec un écrou 1 selon l'invention. L' écrou l vient s' engager et se visser sur l'extrémité filetée 14, de manière à bloquer l'empilage des cales 18 sur le boîtier de différentiel 17.Figure 4 shows an example of assembly where the mechanical assembly is carried out with a nut 1 according to the invention. The nut l comes to engage and screw onto the threaded end 14, so as to block the stacking of the shims 18 on the differential housing 17.

L' écrou I selon l'invention permet ainsi d' assurer la mise en place correcte des roulements 16. The nut I according to the invention thus makes it possible to ensure the correct positioning of the bearings 16.

La figure 3 représente un autre mode de réalisation de l' écrou 1 a zone élastique intégré selon l'invention. Dans cette réalisation, la face d' appui 5 est conique, de manière à assurer une zone d' application de l' effort de tension sur toute ladite face d' appui 5. FIG. 3 represents another embodiment of the nut 1 with an integrated elastic zone according to the invention. In this embodiment, the support face 5 is conical, so as to provide an area for applying the tension force over the entire said support face 5.

Claims (4)

REVENDICATIONS l. Ecrou (l) à zone élastique intégrée, notamment pour assemblage mécanique avec un faible encombrement diamètrale par rapport au diamètre du filetage (8), caractérisé en ce qu'il comporte du côté de la face d' appui (5), un chambrage (4) associé à une partie annulaire (3) élastique dont l'alésage (12) est dimensionné de manière à laisser passer librement l' extrémité diletée (14) sur laquelle vient se fixer ledit écrou (1). l. Nut (l) with integrated elastic zone, in particular for mechanical assembly with a small overall diameter relative to the diameter of the thread (8), characterized in that it comprises on the side of the bearing face (5), a recess ( 4) associated with an elastic annular part (3), the bore (12) of which is dimensioned so as to allow the dilated end (14) to pass freely on which said nut (1) is fixed. 2. Ecrou (1) selon la revendication l, caractérisé en ce que le chambrage (4) est constitué par une face externe (9) perpendiculaire à l'axe (15) de l'écrou, et une face interne (10), qui sont reliées l' une à l' autre par une partie arrondie (l l). 2. Nut (1) according to claim l, characterized in that the recess (4) consists of an external face (9) perpendicular to the axis (15) of the nut, and an internal face (10), which are connected to each other by a rounded part (ll). 3. Ecrou (l) selon la revendication 2, caractérisé en ce que la face interne (10) est conique.3. Nut (l) according to claim 2, characterized in that the internal face (10) is conical. 4. Ecrou (1) selon la revendication 3, caractérisé en ce que la face d' appui (5) est conique, de manière à assurer une zone d' application de l' effort de tension sur toute ladite face d' appui (5). 4. Nut (1) according to claim 3, characterized in that the bearing face (5) is conical, so as to ensure a zone of application of the tension force on all of said bearing face (5 ).
FR8507479A 1985-05-17 1985-05-17 NUT WITH INTEGRATED ELASTIC ZONE Expired FR2582064B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FR8507479A FR2582064B1 (en) 1985-05-17 1985-05-17 NUT WITH INTEGRATED ELASTIC ZONE
DE8686401049T DE3668482D1 (en) 1985-05-17 1986-05-16 NUT WITH INTEGRATED ELASTIC ZONE.
EP86401049A EP0203007B1 (en) 1985-05-17 1986-05-16 Nut comprising an integrated elastic zone
ES1986294176U ES294176Y (en) 1985-05-17 1986-05-16 NUT WITH INTEGRATED ELASTIC ZONE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8507479A FR2582064B1 (en) 1985-05-17 1985-05-17 NUT WITH INTEGRATED ELASTIC ZONE

Publications (2)

Publication Number Publication Date
FR2582064A1 true FR2582064A1 (en) 1986-11-21
FR2582064B1 FR2582064B1 (en) 1987-06-19

Family

ID=9319368

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8507479A Expired FR2582064B1 (en) 1985-05-17 1985-05-17 NUT WITH INTEGRATED ELASTIC ZONE

Country Status (1)

Country Link
FR (1) FR2582064B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011051378A3 (en) * 2009-10-29 2011-10-13 Schaeffler Technologies Gmbh & Co. Kg Fastening assembly of a camshaft adjuster
CN106438655A (en) * 2016-12-08 2017-02-22 金华市通用螺母厂 Integrated locking nut

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2135888A5 (en) * 1971-04-29 1972-12-22 Guillot Rene
FR2247928A5 (en) * 1973-10-15 1975-05-09 Simmonds Sa Lock nuts incorporating a polyamide washer - which is retained by an ancillary collar or cap
FR2269428A1 (en) * 1974-05-04 1975-11-28 Rubery Owen Fasteners Ltd
FR2366480A1 (en) * 1976-01-26 1978-04-28 Hsu Shih Chen Self locking nut with integral washer - has annular oblique groove and dished end forming flexible spring washer

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2135888A5 (en) * 1971-04-29 1972-12-22 Guillot Rene
FR2247928A5 (en) * 1973-10-15 1975-05-09 Simmonds Sa Lock nuts incorporating a polyamide washer - which is retained by an ancillary collar or cap
FR2269428A1 (en) * 1974-05-04 1975-11-28 Rubery Owen Fasteners Ltd
FR2366480A1 (en) * 1976-01-26 1978-04-28 Hsu Shih Chen Self locking nut with integral washer - has annular oblique groove and dished end forming flexible spring washer

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011051378A3 (en) * 2009-10-29 2011-10-13 Schaeffler Technologies Gmbh & Co. Kg Fastening assembly of a camshaft adjuster
CN102597546A (en) * 2009-10-29 2012-07-18 谢夫勒科技股份两合公司 Fastening assembly of a camshaft adjuster
CN102597546B (en) * 2009-10-29 2014-08-20 谢夫勒科技股份两合公司 Fastening assembly of a camshaft adjuster
US8899198B2 (en) 2009-10-29 2014-12-02 Schaeffler Technologies Gmbh & Co. Kg Fastening assembly of a camshaft adjuster
CN106438655A (en) * 2016-12-08 2017-02-22 金华市通用螺母厂 Integrated locking nut
CN106438655B (en) * 2016-12-08 2019-03-15 金华市通用螺母厂 A kind of integral type stop nut

Also Published As

Publication number Publication date
FR2582064B1 (en) 1987-06-19

Similar Documents

Publication Publication Date Title
FR2653180A1 (en) CONNECTION STRUCTURE FOR HIGH PRESSURE FUEL CIRCUIT DERIVATION.
FR2721683A1 (en) Assembly structure for assembling a bypass element to a fuel line under high pressure.
FR2780756A1 (en) BOLT AND NUT LOCKING SYSTEM
FR2638796A1 (en) ASSEMBLY WITH FLOATING BARREL NUT
EP0309344B1 (en) Coupling device for a steering column and vehicle with such a device
EP0898551A1 (en) System for temporarily blocking the relative displacement of two bodies, following at least a preset direction
FR2586369A1 (en) DEVICE FOR FIXING A TOOL TO A TOOL HOLDER
FR2582064A1 (en) Nut with an integral elastic zone
EP0203007B1 (en) Nut comprising an integrated elastic zone
EP3085626B1 (en) Ball-jointed nut cap
FR2712049A1 (en) Device for fastening a member to a steering shaft, particularly of a motor vehicle
EP0362132A1 (en) Locking element
FR2490544A1 (en) DEVICE FOR TIGHTENING AN ELASTIC PLASTIC ELEMENT ON A METAL SUPPORT
FR2820472A1 (en) PROCESS FOR MAKING A IMPERDUCTIVE SCREW, COLLAR FOR FIXING PIPES AND USE OF THE METHOD FOR MANUFACTURING COLLARS
FR2922611A1 (en) NECKLACE FOR TUBULAR CONNECTION
FR2799515A1 (en) GAME RETRIEVAL SYSTEM FOR ATTACHING TWO PIECES TO EACH OTHER USING A SCREW TYPE FASTENER
FR3098260A1 (en) Bolt equipped with a rotation locking system allowing immobilization without increasing the tightening torque
EP3916249B1 (en) Bolt provided with a system for blocking axial rotation and assembly comprising at least one such bolt
WO2008068300A1 (en) Nut with a deformable collar
EP1637747B1 (en) Arrangement for fixing of an equipment element for a motor vehicle
KR200295240Y1 (en) Connection Device for Prevention Looseness
FR2772441A1 (en) Fastening e.g. for trim component, e.g. bumper or aerodynamic fin, on motor vehicle body
EP0022011B1 (en) Expansible nut assembly device
FR2780457A1 (en) Fixing screw between synthetic material and metal piece, especially in vehicles
EP3938667A1 (en) Pyrotechnic nut releasing device

Legal Events

Date Code Title Description
ST Notification of lapse