FR2582064A1 - Nut with an integral elastic zone - Google Patents
Nut with an integral elastic zone Download PDFInfo
- 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
Links
- 240000001923 Thevetia neriifolia Species 0.000 claims 1
- 230000000903 blocking effect Effects 0.000 description 3
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method 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
- 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
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)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8507479A FR2582064B1 (en) | 1985-05-17 | 1985-05-17 | NUT WITH INTEGRATED ELASTIC ZONE |
ES1986294176U ES294176Y (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 |
DE8686401049T DE3668482D1 (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)
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)
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 |
-
1985
- 1985-05-17 FR FR8507479A patent/FR2582064B1/en not_active Expired
Patent Citations (4)
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)
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 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |