FR2482223A1 - Rotary coupling safety retainer - comprises toothed washer with inclined teeth pressed into hub after elastic sleeve - Google Patents

Rotary coupling safety retainer - comprises toothed washer with inclined teeth pressed into hub after elastic sleeve Download PDF

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Publication number
FR2482223A1
FR2482223A1 FR8010567A FR8010567A FR2482223A1 FR 2482223 A1 FR2482223 A1 FR 2482223A1 FR 8010567 A FR8010567 A FR 8010567A FR 8010567 A FR8010567 A FR 8010567A FR 2482223 A1 FR2482223 A1 FR 2482223A1
Authority
FR
France
Prior art keywords
hub
washer
sleeve
key
self
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
FR8010567A
Other languages
French (fr)
Other versions
FR2482223B1 (en
Inventor
Bernard Mallet
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.)
Timken France SAS
Original Assignee
Nadella 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 Nadella SA filed Critical Nadella SA
Priority to FR8010567A priority Critical patent/FR2482223A1/en
Priority to IT48435/81A priority patent/IT1142440B/en
Priority to JP7129681A priority patent/JPS576130A/en
Priority to ES1981267252U priority patent/ES267252Y/en
Publication of FR2482223A1 publication Critical patent/FR2482223A1/en
Application granted granted Critical
Publication of FR2482223B1 publication Critical patent/FR2482223B1/fr
Granted legal-status Critical Current

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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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/50—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members
    • F16D3/76—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members shaped as an elastic ring centered on the axis, surrounding a portion of one coupling part and surrounded by a sleeve of the other coupling part
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
    • F16D3/26—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected
    • F16D3/38—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected with a single intermediate member with trunnions or bearings arranged on two axes perpendicular to one another
    • F16D3/382—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected with a single intermediate member with trunnions or bearings arranged on two axes perpendicular to one another constructional details of other than the intermediate member
    • F16D3/387—Fork construction; Mounting of fork on shaft; Adapting shaft for mounting of fork

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mechanical Operated Clutches (AREA)
  • Motor Power Transmission Devices (AREA)

Abstract

The safety retainer is for a coupling comprising a hub with an internal elastic sleeve compressed radially by an internal torque-transmitting shaft etc. It comprises a washer (11), which is a press-fit in the hub (1) at the end of the sleeve (3). The outer edge of the washer has teeth inclined to the axis and towards the open end of the hub, to give an automatic locking action resisting any force pulling the hub and shaft apart. The washer can comprise a flat ring with teeth inclined to it, formed in the outer edge.

Description

1 24822231 2482223

La présente invention est relative à un accouplement  The present invention relates to a coupling

élastique, et concerne plus particulièrement un tel accouple-  elastic, and more particularly relates to such a coupling

ment muni d'un dispositif de sécurité. fitted with a safety device.

On connait déjà des accouplements constitués par l'as-  We already know couplings constituted by the as-

semblage d'un arbre ou tout autre organe de transmission avec un moyeu, avec l'interposition d'un manchon en élastomère comprimé radialement au contact de la paroi interne dudit moyeu, semblage of a shaft or any other transmission member with a hub, with the interposition of an elastomer sleeve compressed radially in contact with the internal wall of said hub,

pour assurer la liaison en rotation des deux organes.  to ensure the rotational connection of the two bodies.

L'objet de la présente invention est de proposer un dispositif de sécurité axiale du manchon qui soit tout à la fois économique, facile à mettre en oeuvre, et surtout, capable de résister à des charges axiales importantes pour assurer la  The object of the present invention is to provide an axial safety device for the sleeve which is both economical, easy to implement, and above all, capable of withstanding large axial loads to ensure the

permanence de la liaison en rotation par le manchon, le disposi-  permanence of the connection in rotation by the sleeve, the device

tif selon l'invention étant caractérisé en ce qu'il comporte, montée à force sur ladite paroi entre l'extrgmité du manchon et celle adjacente du moyeu, une rondelle dont la périphérie extérieure est munie de dents inclinées sur l'axe en direction de l'extrémité du moyeu assurant son autoblocage contre la paroi tif according to the invention being characterized in that it comprises, forcibly mounted on said wall between the end of the sleeve and that adjacent to the hub, a washer whose outer periphery is provided with teeth inclined on the axis in the direction of the end of the hub ensuring its self-locking against the wall

précitée sous l'action d'un effort d'extraction. above under the action of an extraction effort.

D'autres avantages et caractéristiques de la présente  Other advantages and features of this

invention apparaitront plus clairement à la suite de la descrip-  invention will appear more clearly as a result of the description

tion qui va suivre de deux modes d'exécution donnés uniquement à titre d'exemples et représentés aux dessins annexés dans lesquels: - la figure 1 représente en coupe axiale un dispositif selon l'invention appliqué à un accouplement de mâchoire de cardan  tion which follows of two embodiments given only by way of examples and shown in the accompanying drawings in which: - Figure 1 shows in axial section a device according to the invention applied to a gimbal jaw coupling

- la figure 2 représente en plan la rondelle autoblocante.  - Figure 2 shows in plan the self-locking washer.

- la figure 3 représente en coupe une variante du dispositif  - Figure 3 shows in section a variant of the device

de la figure 1.of figure 1.

- la figure 4 est une vue d'extrtmité de la variante de la figure 3 La figure 1 représente en coupe axiale un accouplement selon l'invention comportant un moyeulréalisé, soit en matière synthétique, soit par découpe d'un tronçon de tube étire ou  - Figure 4 is an end view of the variant of Figure 3 Figure 1 shows in axial section a coupling according to the invention comprising a hub made, either of synthetic material, or by cutting a section of stretched tube or

par roulage et soudage d'un flan de tôle, et muni intérieure- by rolling and welding of a sheet blank, and provided internally

ment d'un manchon élastique 3 comprimé radialement entre au moins une portion de sa paroi interne 5 et un arbre ou tout autre organe transmetteur de couple, tel un élément tubulaire  ment of an elastic sleeve 3 compressed radially between at least a portion of its internal wall 5 and a shaft or any other torque transmitting member, such as a tubular element

2 24822232 2482223

creux 7 emmanché dans son alésage 9, et destiné à assurer en  hollow 7 fitted into its bore 9, and intended to ensure

fonctionnement normal, et par l'intermédiaire du manchon uni- normal operation, and through the single sleeve

quement, l'entrainement en rotation, sans contact métallique,  only, the rotary drive, without metallic contact,

du moyeu ou inversement.of the hub or vice versa.

Pour prévenir le glissement du manchon à l'extérieur To prevent the sleeve from slipping outside

du moyeu sous l'action de sollicitations anormales, la perma-  of the hub under the action of abnormal stresses, the perma-

nence de l'entrainement est assurée selon l'invention au moyen d'un dispositif de sécurité constitué d'au moins une rondelle 11 (fig. 2) en acier, par exemple, de dureté supérieure à celle du matériau du moyeu, formée d'un anneau sensiblement plan, dont l'ouverture centrale 13 est sueceptible d'Otre traversée, sans contact, même en fonctionnement, par l'élément 7, et dont la périphérie extérieure est découpée de manière à présenter  nence of the drive is provided according to the invention by means of a safety device consisting of at least one washer 11 (fig. 2) of steel, for example, of hardness greater than that of the material of the hub, formed of '' a substantially planar ring, the central opening 13 of which can be traversed, without contact, even in operation, by the element 7, and the external periphery of which is cut so as to present

au moins une, et de préférence plusieurs dents 15 régulière-  at least one, and preferably several regular teeth 15

ment réparties et légèrement inclinées par rapport au plan de  distributed and slightly inclined with respect to the plane of

la rondelle.the washer.

Sur la paroi interne 5 du moyeu situéeentre l'extrémité 17du manchon et celle adjacente 19 du moyeu, est montée à  On the inner wall 5 of the hub located between the end 17 of the sleeve and the adjacent end 19 of the hub, is mounted at

force, de préférence après l'insertion du manchon entre l'élé-  force, preferably after inserting the sleeve between the element

ment tubulaire 7 et le moyeu, par emmanchement à la presse tubular ment 7 and the hub, by press fitting

par exemple, la rondelle précitée orientée perpendiculaire-  for example, the aforementioned washer oriented perpendicular-

ment à l'axe XX du moyeu de manière que l'inclinaison de ses dents soit dirigée du cOté de ladite extrémité 19 permettant ainsi,d'une part une insertion facile par glissement de ces dernières le long de l'alésage du moyeu, et d'autre part son autoblocage par arc-boutement sous l'action d'un quelconque  ment to the axis XX of the hub so that the inclination of its teeth is directed towards the side of said end 19 thus allowing, on the one hand, an easy insertion by sliding of the latter along the bore of the hub, and on the other hand its self-blocking by bracing under the action of any

effort axial d'extraction F, qui en redressant les dents, as- axial extraction force F, which by straightening the teeth, as-

sure leur appui sur la paroi interne 5 de l'alésage réalisant  on their support on the internal wall 5 of the bore making

ainsi une butée pour ledit manchon. thus a stop for said sleeve.

Pour améliorer le caractère autoblocant de la rondelle, il est possible de tailler les extrOmités périphériquesdes dents pour faciliter, sous l'action d'un effort d'extraction, To improve the self-locking nature of the washer, it is possible to cut the peripheral ends of the teeth to facilitate, under the action of an extraction force,

leur incrustation dans la paroi interne du moyeu.  their inlay in the inner wall of the hub.

Il est clair que le dispositif selon l'invention pré-  It is clear that the device according to the invention pre-

sente l'avantage d'utiliser une pièce simple et économique, su-  feels the advantage of using a simple and economical part,

sceptible d'Otre réalisée avec des tolérances très larges, et likely to be performed with very wide tolerances, and

capable de résister à des efforts axiaux d'extraction très im-  able to withstand very large axial extraction forces

portants.load-bearing.

3 24822233 2482223

la figure 3 représente une variante du dispositif de la  FIG. 3 represents a variant of the device of the

figure 1 selon laquelle la permanence de l'entrainement en ro-  figure 1 according to which the permanence of the training in ro-

tation, en cas de détérioration de l'élastomère, est assurée,  tation, in the event of deterioration of the elastomer, is ensured,

comme connu en soi, grâce à une clé 21 rendue solidaire de l'é-  as known per se, thanks to a key 21 made integral with the

lément 7, et qui comporte deux branches diamétralement opposées element 7, and which has two diametrically opposite branches

23 qui viennent se loger sans contact, du moins en fonctionne-  23 who come to stay without contact, at least in operation

ment normal, dans deux découpes débouchantes correspondantes , pratiquées dans l'extr8mité 19 du moyeuo Selon l'invention, la sécurité axiale aussi bien du manchon que de la clé est  ment normal, in two corresponding through cutouts, made in the end 19 of the hub According to the invention, the axial safety of both the sleeve and the key is

assurée par l'émmanchement-devant cette dernière d'une rondel- ensured by the fitting-in front of the latter of a washer-

le 11' du type décrit précédemment ou de préférence d'une va-  11 'of the type described above or preferably of a

riante visible sur la figure 4, et comportant à la manière de la clé, deux secteurs d'indexation diamétralement opposés 27, destinés à venir également dans les découpes 25, et de part  laughing visible in Figure 4, and comprising in the manner of the key, two diametrically opposed indexing sectors 27, intended to also come in the cutouts 25, and share

et d'autre desquels sont réalisées les dents 15 également in- and others of which the teeth 15 are also made

clinées du c8té de l'extr9mité 19, mais de dimension radiale plus faible, qui prennent appui lors de l'emmanchement sur la portion non découpée de la paroi interne de l'extrémité du  clinches on the side of the end 19, but of smaller radial dimension, which bear during fitting on the uncut portion of the inner wall of the end of the

moyeu pour venir devant ou contre la clé assurant, par autoblo-  hub to come in front of or against the key ensuring, by autoblo-

cage de la rondelle, la sécurité axialeo washer cage, axial safety

La clé munie de ces deux branches peut-être rendue soli- The key provided with these two branches can be made soli-

daire non pas de l'élément 7, mais du moyeu par l'insertion à force de sa partie centrale dans l'alésage de ce dernier, dans quel cas l'entrainement enrotation-en cas de détérioration de not from element 7, but from the hub by force-fitting its central part into the bore of the latter, in which case the drive-in drive-in case of deterioration of

l'élastomère est assuré par lacoopération due à des formes ap- the elastomer is provided by cooperation due to suitable forms

propriées, par exemple trapézoidales, de l'arbre et de l'ouver-  properties, for example trapezoidal, of the tree and the opening

ture centrale de la rondelleo La présente invention a été représentée appliquée, à titre d'exemple, à la mâchoire d'un joint de cardan, obtenue  The central invention of the rondelleo The present invention has been shown applied, by way of example, to the jaw of a universal joint, obtained

par découpe de l'extrémité 29 opposée à celle recevant la ron- by cutting the end 29 opposite to that receiving the round

delle, pour y réaliser les deux branches 31 destinées à rece-  delle, to realize the two branches 31 intended to receive

voir avec l'interposition de cuvettes de roulement, les deux tourillons opposés d'un croisillon (non représentés)o En variante, l'extrtmité précitée peut-être découpée de manière à présenter au moins une patte de fixation disposée dans see with the interposition of bearing cups, the two opposite pins of a spider (not shown) o As a variant, the aforementioned end may be cut so as to have at least one fixing lug arranged in

un plan sensiblement perpendiculaire à l'axe du moyeu.  a plane substantially perpendicular to the axis of the hub.

Selon l'application on peut envisager le blocage axial du  Depending on the application, the axial blocking of the

manchon à une extr8mité comme décrit précédemment, ou bien l'u-  sleeve at one end as described previously, or else the

tilisation d'une rondelle à chaque extrémité pour un blocage dans deux directions opposéeso use of a washer at each end for locking in two opposite directions

- 4 2 Z482223- 4 2 Z482223

Claims (8)

REVENDICATIONS -_____________CLAIMS -_____________ 1/Dispositif de sécurité pour un accouplement du type com-  1 / Safety device for a coupling of the com- prenant un moyeu muni intérieurement d'un manchon élastique comprimé radialement entre sa paroi intérieure et un arbre ou tout autre organe transmetteur de couple, caractérisé en ce qu'il comporte, montée à force sur ladite paroi, entre l'extrCmité du manchon et celle adjacente du moyeu, une rondelle dont la périphérie extérieure est munie de dents inclinées sur l'axe en direction de l'extrémité du moyeu taking a hub provided internally with an elastic sleeve compressed radially between its inner wall and a shaft or any other torque-transmitting member, characterized in that it comprises, forcibly mounted on said wall, between the end of the sleeve and that adjacent to the hub, a washer whose outer periphery is provided with teeth inclined on the axis towards the end of the hub assurant son autoblocage contre la paroi précitée sous ltac-  ensuring its self-locking against the aforementioned wall under the ltac- tion d'un effort d'extraction.tion of an extraction effort. 2/ Dispositif selon la revendication 1 caractérisé en ce que la rondelle est constituée d'un anneau sensiblement plan, dont la périphérie extérieure est munie de dents inclinées par 2 / Device according to claim 1 characterized in that the washer consists of a substantially planar ring, the outer periphery of which is provided with teeth inclined by rapport audit plan.report to this plan. 153/ Dispositif selon la revendication 1 ou 2 caractérisé en ce que la rondelle comporte une ouverture centrale permettant  153 / Device according to claim 1 or 2 characterized in that the washer has a central opening allowing le passage sans contact de l'organe transmetteur de couple.  the contactless passage of the torque transmitting member. 4/ Dispositif selon l'une des revendications 1 à 3 caractérisé  4 / Device according to one of claims 1 to 3 characterized ez ce que l'autoblocage de la rondelle est obtenu par arc- ez the self-locking of the washer is obtained by arc boutement.brash. / Dispositif selon l'une des revendications 1 à 3 caractérisé  / Device according to one of claims 1 to 3 characterized en ce que l'autoblocage de la rondelle est obtenu par incrus- in that the self-locking of the washer is obtained by incrus- tation des dents dont l'extrêmité est tailléeo  tation of the teeth whose ends are trimmed 6/Dispositif selon l'une des revendications 1 à 5 caractérisé  6 / Device according to one of claims 1 to 5 characterized en ce qu'il comporte entre le manchon et la rondelle une clé in that it has a key between the sleeve and the washer qui assure la permanence de l'entrainement en cas de détério-  which ensures the permanence of the training in case of deterioration ration de l'élastomère.ration of the elastomer. 7/ Dispositif selon la revendication 6 caractérisé en ce que  7 / Device according to claim 6 characterized in that la clé est rendue solidaire, soit du moyeu, soit de l'arbre.  the key is made integral either with the hub or with the shaft. 8/ Dispositif selon la revendication 6 ou 7 caractérisé en ce 8 / Device according to claim 6 or 7 characterized in that que la clé et la rondelle comportent des branches qui coo-  that the key and the washer have branches which coo- pèrent avec des découpes pratiquées dans l'extrOmité préci-  perent with cuts made in the above extremity tée du moyeuohub tee 9/ Dispositif selon l'une des revendications 1 à 8 caractérisé  9 / Device according to one of claims 1 to 8 characterized 24822232482223 en ce que l'autre extrémité du moyeu est conformée de maniè-  in that the other end of the hub is shaped so that reà présenter les deux branches d'une mâchoire de cardan. re to present the two branches of a cardan jaw. oo
FR8010567A 1980-05-12 1980-05-12 Rotary coupling safety retainer - comprises toothed washer with inclined teeth pressed into hub after elastic sleeve Granted FR2482223A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FR8010567A FR2482223A1 (en) 1980-05-12 1980-05-12 Rotary coupling safety retainer - comprises toothed washer with inclined teeth pressed into hub after elastic sleeve
IT48435/81A IT1142440B (en) 1980-05-12 1981-05-11 SAFETY DEVICE FOR AN ELASTIC COUPLING OF ROTATION DRIVE
JP7129681A JPS576130A (en) 1980-05-12 1981-05-12 Safety device for coupling
ES1981267252U ES267252Y (en) 1980-05-12 1981-05-12 "SAFETY DEVICE FOR ELASTIC DRIVE COUPLING IN ROTATION".

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8010567A FR2482223A1 (en) 1980-05-12 1980-05-12 Rotary coupling safety retainer - comprises toothed washer with inclined teeth pressed into hub after elastic sleeve

Publications (2)

Publication Number Publication Date
FR2482223A1 true FR2482223A1 (en) 1981-11-13
FR2482223B1 FR2482223B1 (en) 1984-04-27

Family

ID=9241854

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8010567A Granted FR2482223A1 (en) 1980-05-12 1980-05-12 Rotary coupling safety retainer - comprises toothed washer with inclined teeth pressed into hub after elastic sleeve

Country Status (4)

Country Link
JP (1) JPS576130A (en)
ES (1) ES267252Y (en)
FR (1) FR2482223A1 (en)
IT (1) IT1142440B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2526101A1 (en) * 1982-04-30 1983-11-04 Nacam
CN103758879A (en) * 2014-01-02 2014-04-30 李明科 Driving device for vermicelli maker

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0743494Y2 (en) * 1987-08-21 1995-10-09 日本精工株式会社 Elastic shaft coupling
DE3925377A1 (en) * 1989-08-01 1991-02-07 Bosch Gmbh Robert METHOD FOR CORRECTING THE MEASURING ERRORS OF A HOT FILM AIRMETER

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB531924A (en) * 1939-08-08 1941-01-14 Harris Products Company Power transmitting coupling
FR2212871A6 (en) * 1972-01-11 1974-07-26 Pitner Alfred
FR2391390A1 (en) * 1977-05-18 1978-12-15 Nadella Tubular flexible shaft coupling - has elastomeric bush at one end engaging splined shaft and other end of reduced dia. engaging second shaft using clamp bolt

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB531924A (en) * 1939-08-08 1941-01-14 Harris Products Company Power transmitting coupling
FR2212871A6 (en) * 1972-01-11 1974-07-26 Pitner Alfred
FR2391390A1 (en) * 1977-05-18 1978-12-15 Nadella Tubular flexible shaft coupling - has elastomeric bush at one end engaging splined shaft and other end of reduced dia. engaging second shaft using clamp bolt

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2526101A1 (en) * 1982-04-30 1983-11-04 Nacam
EP0093634A1 (en) * 1982-04-30 1983-11-09 Nacam Double cardan joint with an elastic torque-transmitting element
US4548591A (en) * 1982-04-30 1985-10-22 Nacam Double universal joint with an elastically yieldable torque transmitting element
CN103758879A (en) * 2014-01-02 2014-04-30 李明科 Driving device for vermicelli maker

Also Published As

Publication number Publication date
JPH0118294B2 (en) 1989-04-05
ES267252U (en) 1983-05-16
JPS576130A (en) 1982-01-13
ES267252Y (en) 1983-11-16
IT8148435A0 (en) 1981-05-11
FR2482223B1 (en) 1984-04-27
IT1142440B (en) 1986-10-08

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