FR2496792A2 - Universal joint for articulated shaft - has ball bearings housed in vibration damped enclosure between inner and outer square sections - Google Patents

Universal joint for articulated shaft - has ball bearings housed in vibration damped enclosure between inner and outer square sections Download PDF

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Publication number
FR2496792A2
FR2496792A2 FR8123522A FR8123522A FR2496792A2 FR 2496792 A2 FR2496792 A2 FR 2496792A2 FR 8123522 A FR8123522 A FR 8123522A FR 8123522 A FR8123522 A FR 8123522A FR 2496792 A2 FR2496792 A2 FR 2496792A2
Authority
FR
France
Prior art keywords
joint
sleeve
diameter
ball bearings
external element
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
FR8123522A
Other languages
French (fr)
Inventor
Werner Krude
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.)
GKN Automotive GmbH
Original Assignee
Uni Cardan AG
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
Priority claimed from DE2634581A external-priority patent/DE2634581C2/en
Application filed by Uni Cardan AG filed Critical Uni Cardan AG
Publication of FR2496792A2 publication Critical patent/FR2496792A2/en
Pending 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
    • 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
    • F16D3/20—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
    • F16D3/22—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts
    • F16D3/221—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being located in sockets in one of the coupling parts
    • 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
    • F16D3/20—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
    • F16D3/202—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members one coupling part having radially projecting pins, e.g. tripod joints

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vibration Prevention Devices (AREA)

Abstract

The universal joint consists of a short square tube (2) with a fixing flange (3). An inner square sleeve (5) is housed inside the outer tube. Both tubes have rounded corners and the dimensions are such that the inner sleeve fits into the outer tube when offset axially by an angle of ninety degrees. The triangular spaces (7) retain vibration damping material. The motor shaft (10) has a spherical end (9) and houses the ball bearings (11) so that the shaft and ball bearings fit into the inner sleeve (5). Each ball bearing is in contact with the adjacent ball through a hole (4).

Description

La présente addition concerne un joint à mobilité anguiaire pour arbre articulé, dans lequel la transmission du couple est assurée par des corps roulants, répartis uniformément dans le sens circonférentiel, montés en translation radiale dans des évidements de l'élé- ment interieur du joint, guidés dans des rainures de l'élément extérieur, au moins partiellement sphériques et présentant un dia metre des surfaces sphériques suffisamment grand pour qu'ils prennent appui les uns sur les autres par leurs faces dirigees vers l'axe du joint, selon le brevet principal. The present addition relates to a joint with angular mobility for an articulated shaft, in which the transmission of the torque is ensured by rolling bodies, distributed uniformly in the circumferential direction, mounted in radial translation in recesses of the internal element of the joint, guided in grooves of the external element, at least partially spherical and having a diameter of spherical surfaces large enough so that they bear on each other by their faces directed towards the axis of the joint, according to the main patent .

Un tel joint peut certes absorber des mouvements angulaires et des translations longitudinales axiales, mais il ne se prête pas à l'absorption de vibrations ou de chocs en service. Such a seal can certainly absorb angular movements and axial longitudinal translations, but it does not lend itself to the absorption of vibrations or shocks in service.

L'invention a pour objet un joint capable de transmettre un couple relevé avec un faible diamètre extérieur et utilisable en outre en amortisseur de vibrations. The subject of the invention is a seal capable of transmitting a detected torque with a small external diameter and which can also be used as a vibration damper.

Selon une caractéristique essentielle de l'invention, l'élément extérieur du joint présente une section polygonale, dont le nombre de cotés est égal au nombre de corps roulants, et est entouré par un manchon dont la section interne cprrespond à l'élément extérieur du joint, le diamètre interieur minimal du manchon étant sensiblement égal au diamètre extérieur maximal de l'élément extérieur du joint, et les sommets du manchon et de l'élément extérieur du joint étant décalés d'un demi-angle intérieur du polygone, et des amortisseurs élastiques sont disposés dans les espaces libres. According to an essential characteristic of the invention, the external element of the joint has a polygonal section, the number of sides of which is equal to the number of rolling bodies, and is surrounded by a sleeve, the internal section of which corresponds to the external element of the joint, the minimum internal diameter of the sleeve being substantially equal to the maximum external diameter of the external element of the joint, and the tops of the sleeve and of the external element of the joint being offset by an internal half-angle of the polygon, and elastic shock absorbers are arranged in the free spaces.

Par suite de la disposition d'amortisseurs entre l'élément extérieur du joint et un manchon, cette réalisation permet d'amortir des vibrations, d'absorber des chocs en service et de compenser des fluctuations du couple, tout en conservant l'inclinaison du joint et une compensation de longueur axiale. As a result of the arrangement of shock absorbers between the external element of the seal and a sleeve, this embodiment makes it possible to absorb vibrations, to absorb shocks in service and to compensate for fluctuations in torque, while retaining the inclination of the joint and axial length compensation.

Selon une autre caractéristique de l'invention, les corps roulants sont réalisés sous forme de billes et les sommets de l'élément extérieur du joint présentent un arrondi adapté au diamètre des billes. Une fabrication simple est ainsi possible avec des pièces de série. According to another characteristic of the invention, the rolling bodies are produced in the form of balls and the tops of the external element of the seal have a rounded shape adapted to the diameter of the balls. Simple manufacturing is thus possible with standard parts.

Selon une autre caractéristique de l'invention, les amortisseurs elastiques sont reliés entre eux. According to another characteristic of the invention, the elastic dampers are interconnected.

D'autres caractéristiques et avantages de l'invention seront mieux compris à l'aide de la description détaillée ci-dessous d'exemples de réalisation préférentielle et des dessins annexés sur lesquels la figure 1 est la coupe d'un joint articulé; la figure 2 est une coupe longitudinale du joint selon figure 1; et les figures 3 et 4 représentent un joint articulé de même principe que celui des figures 2 et 1, mais avec une forme de realisation différente des amortisseurs. Other characteristics and advantages of the invention will be better understood with the aid of the detailed description below of preferred embodiments and of the appended drawings in which FIG. 1 is the section of an articulated joint; Figure 2 is a longitudinal section of the joint according to Figure 1; and Figures 3 and 4 show an articulated joint of the same principle as that of Figures 2 and 1, but with a different embodiment of the shock absorbers.

Les figures 1 et 2 représentent un joint 1, logé dans un manchon 2 qui, dans cet exemple de réalisation, est muni d'une bride 3 que les trous 4 permettent de boulonner sur d'autres pièces. Des amortisseurs 6, disposés entre l'élément extérieur 5 du joint 1 et le manchon 2, fonctionnent en amortisseurs de vibrations. Le manchon 2 est constitué par un tube de section carrée, dont le diamètre interieur minimal est égal au diamètre extérieur maximal de l'élément extérieur 5 du joint, également constitué par un tube de section carrée. Par suite du choix des diamètres, les sections carrées de l'élément extérieur 5 du joint et du manchon 2 sont décalées d'un demi-angle intérieur et produisent ainsi des espaces libres 7, servant de logement aux amortisseurs 6. Figures 1 and 2 show a seal 1, housed in a sleeve 2 which, in this embodiment, is provided with a flange 3 that the holes 4 allow to bolt on other parts. Dampers 6, arranged between the external element 5 of the seal 1 and the sleeve 2, function as vibration dampers. The sleeve 2 is constituted by a tube of square section, the minimum internal diameter of which is equal to the maximum external diameter of the external element 5 of the joint, also constituted by a tube of square section. As a result of the choice of diameters, the square sections of the external element 5 of the joint and of the sleeve 2 are offset by an internal half-angle and thus produce free spaces 7, serving as housing for the shock absorbers 6.

Le joint 1 est essentiellement constitué par l'élément extérieur 5, dont la cavité 8 contient î'éfément intérieur 9. Ce dernier est réalisé en une seule pièce avec l'arbre moteur 10. Les corps roulants 11, constitués par des billes dans cet exemple de réalisation, servent à la transmission du couple. Ils sont logés d'une part dans des rainures 11 de I'glément extérieur 5 du joint et d'autre part dans les évidements 13 de l'élément intérieur 9. Les rainures 12 de l'élé- ment extérieur 5 sont formées directement par l'arrondi du tube carré. The seal 1 is essentially constituted by the external element 5, the cavity 8 of which contains the internal element 9. The latter is produced in one piece with the drive shaft 10. The rolling bodies 11, constituted by balls in this exemplary embodiment, are used for the transmission of the torque. They are housed on the one hand in grooves 11 of the outer element 5 of the seal and on the other hand in the recesses 13 of the inner element 9. The grooves 12 of the outer element 5 are formed directly by the rounding of the square tube.

Les évidements 13 présentent un diamètre égal à celui des billes 11, de façon à permettre un mouvement radial de ces dernières. Afin de permettre un appui mutuel des corps roulants 11, les évidements 13 constitués par des perçages sont disposés de façon que deux perçages voisins se recoupent en formant un passage 14. Ce dernier permet l'appui mutuel de deux corps roulants 11 voisins.The recesses 13 have a diameter equal to that of the balls 11, so as to allow a radial movement of the latter. To allow mutual support of the rolling bodies 11, the recesses 13 formed by holes are arranged so that two neighboring holes intersect by forming a passage 14. The latter allows the mutual support of two neighboring rolling bodies 11.

Un dimensionnement approprié des diamètres de l'élément extérieur 5 du joint et du manchon 2, et un décalage correspondant d'un demiangle interieur a creent un espace libre 7 pour le logement des amortisseurs 6. An appropriate dimensioning of the diameters of the external element 5 of the seal and of the sleeve 2, and a corresponding offset of an interior half-angle has created a free space 7 for housing the shock absorbers 6.

Il est facile d'adopter des sections polygonales autres que la section carrée représentée dans cette forme de réalisation. Le nombre de billes li correspond toujours à la section polygonale adoptée, de sorte qu'une production séparée des rainures 12 est inutile. It is easy to adopt polygonal sections other than the square section shown in this embodiment. The number of balls li always corresponds to the polygonal section adopted, so that a separate production of the grooves 12 is unnecessary.

Les figures 3 et 4 représentent un joint articulé dans lequel l'amortisseur 15 est monoblic et remplit tout l'espace libre 7. Ce joint est par ailleurs identique à celui décrit selon figures 1 et 2. FIGS. 3 and 4 represent an articulated joint in which the damper 15 is in one piece and fills all the free space 7. This joint is also identical to that described according to FIGS. 1 and 2.

Bien entendu, diverses modifications peuvent etre apportées par l'homme de l'art au principe et aux dispositifs qui viennent d'être décrits uniquement à titre d'exemples non limitatifs, sans sortir du cadre de l'invention.  Of course, various modifications can be made by those skilled in the art to the principle and to the devices which have just been described only by way of nonlimiting examples, without departing from the scope of the invention.

Claims (3)

RevendicationsClaims 1. Joint à mobilite angulaire pour arbre articulé, dans lequel la transmission du couple est assurée par des corps roulants, répartis uniformement dans le sens circonférentiel, montés en translation radiale dans des évidements de l'élément intérieur du joint, guidés dans des rainures de l'élément extérieur, au moins partiellement sphériques et présentant un diamètre des surfaces sphériques suffisamment grand pour qu'ils prennent appui les uns sur les autres par leurs faces dirigées vers l'axe du joint, selon le brevet principal, ledit joint etant caractérisé en ce que l'élément extérieur (5) du joint présente une section polygonale dont le nombre de côtes est égal au nombre de corps roulants (11) et est entouré par un manchon (2) dont la section interne correspond à l'élément extérieur (5) du joint, le diamètre intérieur minimal du manchon (2) étant sensiblement égal au diamètre extérieur maximal de l'élément extérieur (5) du joint, et les sommets du manchon (2) et de l'élément extérieur (5) du joint étant décalés d'un demi-angle intérieur ta) du polygonale; et des amortisseurs élastiques (6) sont disposés dans les espaces libres (7).1. Joint with angular mobility for articulated shaft, in which the transmission of the torque is ensured by rolling bodies, distributed uniformly in the circumferential direction, mounted in radial translation in recesses of the internal element of the joint, guided in grooves of the external element, at least partially spherical and having a diameter of the spherical surfaces large enough so that they bear on each other by their faces directed towards the axis of the seal, according to the main patent, said seal being characterized in that the outer element (5) of the joint has a polygonal section whose number of ribs is equal to the number of rolling bodies (11) and is surrounded by a sleeve (2) whose internal section corresponds to the outer element ( 5) of the joint, the minimum internal diameter of the sleeve (2) being substantially equal to the maximum external diameter of the external element (5) of the joint, and the tops of the sleeve (2) and of the external element ur (5) of the joint being offset by an internal half-angle ta) from the polygonal; and elastic dampers (6) are arranged in the free spaces (7). 2. Joint selon revendication 1, caractéris8 en ce que les corps roulants (5) sont réalisés sous forme de billes et les sommets de l'élé- ment extérieur (5) du joint présentent un arrondi adapté au diamètre des billes.2. Joint according to claim 1, characterized in that the rolling bodies (5) are produced in the form of balls and the tops of the external element (5) of the joint have a rounded shape adapted to the diameter of the balls. 3. Joint selon revendication 1, caractérisé en ce que les amortisseurs élastiques (6) sont reliés entre eux. 3. Joint according to claim 1, characterized in that the elastic dampers (6) are interconnected.
FR8123522A 1976-07-31 1981-12-16 Universal joint for articulated shaft - has ball bearings housed in vibration damped enclosure between inner and outer square sections Pending FR2496792A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2634581A DE2634581C2 (en) 1976-07-31 1976-07-31 Angularly movable cardan shaft coupling
DE3048338 1980-12-20

Publications (1)

Publication Number Publication Date
FR2496792A2 true FR2496792A2 (en) 1982-06-25

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ID=25770763

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8123522A Pending FR2496792A2 (en) 1976-07-31 1981-12-16 Universal joint for articulated shaft - has ball bearings housed in vibration damped enclosure between inner and outer square sections

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Country Link
FR (1) FR2496792A2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2578012A1 (en) * 1985-02-22 1986-08-29 Gkn Automotive Components Inc UNIVERSAL JOINT FOR TRANSMITTING TORQUE BETWEEN TWO MECHANICAL ORGANS AND COUPLING COMPRISING THE SAME
WO2012055611A1 (en) * 2010-10-29 2012-05-03 Robert Bosch Gmbh Arrangement for transmitting a torque between a shaft and a hub

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE552617A (en) *
GB565222A (en) * 1942-02-05 1944-11-01 Thompson Prod Inc Improvements in and relating to universal joints
US2386754A (en) * 1942-02-05 1945-10-16 Thompson Prod Inc Universal joint
FR952194A (en) * 1947-04-25 1949-11-10 Parthenon Anstalt Elastic joint
GB683833A (en) * 1950-05-06 1952-12-03 Richard Wade Burtwell Improvements in torque-transmitting couplings
GB730534A (en) * 1951-10-23 1955-05-25 Andre Rubber Co Improvements in or relating to resilient torsion joints
FR1231393A (en) * 1958-07-25 1960-09-28 Rzeppa Ltd Elastic transmission coupling and method of manufacturing the same
US3953012A (en) * 1973-11-21 1976-04-27 New Zealand Inventions Development Authority Torsional extrusion energy absorber or extrusion torque limiter
FR2360792A1 (en) * 1976-07-31 1978-03-03 Uni Cardan Ag UNIVERSAL JOINT FOR ARTICULATED SHAFT
US4098096A (en) * 1977-05-25 1978-07-04 The United States Of America As Represented By The Secretary Of The Navy High strength, non-metallic coupling

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE552617A (en) *
GB565222A (en) * 1942-02-05 1944-11-01 Thompson Prod Inc Improvements in and relating to universal joints
US2386754A (en) * 1942-02-05 1945-10-16 Thompson Prod Inc Universal joint
FR952194A (en) * 1947-04-25 1949-11-10 Parthenon Anstalt Elastic joint
GB683833A (en) * 1950-05-06 1952-12-03 Richard Wade Burtwell Improvements in torque-transmitting couplings
GB730534A (en) * 1951-10-23 1955-05-25 Andre Rubber Co Improvements in or relating to resilient torsion joints
FR1231393A (en) * 1958-07-25 1960-09-28 Rzeppa Ltd Elastic transmission coupling and method of manufacturing the same
US3953012A (en) * 1973-11-21 1976-04-27 New Zealand Inventions Development Authority Torsional extrusion energy absorber or extrusion torque limiter
FR2360792A1 (en) * 1976-07-31 1978-03-03 Uni Cardan Ag UNIVERSAL JOINT FOR ARTICULATED SHAFT
US4098096A (en) * 1977-05-25 1978-07-04 The United States Of America As Represented By The Secretary Of The Navy High strength, non-metallic coupling

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2578012A1 (en) * 1985-02-22 1986-08-29 Gkn Automotive Components Inc UNIVERSAL JOINT FOR TRANSMITTING TORQUE BETWEEN TWO MECHANICAL ORGANS AND COUPLING COMPRISING THE SAME
WO2012055611A1 (en) * 2010-10-29 2012-05-03 Robert Bosch Gmbh Arrangement for transmitting a torque between a shaft and a hub
CN103180628A (en) * 2010-10-29 2013-06-26 罗伯特·博世有限公司 device for transmitting torque between a shaft and a hub
US9039539B2 (en) 2010-10-29 2015-05-26 Robert Bosch Gmbh Arrangement for transmitting a torque between a shaft and a hub
CN103180628B (en) * 2010-10-29 2016-03-16 罗伯特·博世有限公司 device for transmitting torque between a shaft and a hub

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