EP1042593A1 - Device for sealing an oil-filling orifice - Google Patents

Device for sealing an oil-filling orifice

Info

Publication number
EP1042593A1
EP1042593A1 EP98962507A EP98962507A EP1042593A1 EP 1042593 A1 EP1042593 A1 EP 1042593A1 EP 98962507 A EP98962507 A EP 98962507A EP 98962507 A EP98962507 A EP 98962507A EP 1042593 A1 EP1042593 A1 EP 1042593A1
Authority
EP
European Patent Office
Prior art keywords
plug
orifice
filling
oil
sealing
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
EP98962507A
Other languages
German (de)
French (fr)
Other versions
EP1042593B1 (en
Inventor
Jean-Pierre Debrut
Eric Grizaud
Jean-François Lessous
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
Original Assignee
Renault SAS
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 filed Critical Renault SAS
Publication of EP1042593A1 publication Critical patent/EP1042593A1/en
Application granted granted Critical
Publication of EP1042593B1 publication Critical patent/EP1042593B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/04—Filling or draining lubricant of or from machines or engines
    • F01M11/0408—Sump drainage devices, e.g. valves, plugs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/0004—Oilsumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/04—Filling or draining lubricant of or from machines or engines
    • F01M2011/0491—Filing cap with special features

Definitions

  • the invention relates to a device for closing an oil filling orifice.
  • the invention relates more particularly to a device for closing an oil filling orifice of an engine, a gearbox, or a differential of a motor vehicle, of the type in which the upper free end of a frustoconical cylindrical orifice for filling receives a plug which carries an annular seal and which comprises two diametrically opposite lugs which penetrate axially into associated radial recesses of the frustoconical cylindrical orifice and which, during tightening in rotation, cooperate respectively with two inclined and peripheral ramps carried by a lower transverse face of the cylindrical orifice, to allow locking, of the bayonet type, of the plug in the closed position.
  • I t is generally plugs having a body of slightly frustoconical shape and having a groove in laq uelle a toriq ue seal provides compression by pressing against an inner face of the filling orifice in which it is received.
  • the adhesion of the seal and the passage of a point of the pins in contact with the ramps condition the holding of a plug in the filling orifice.
  • constructive provisions linked to the area to be sealed such as the installation of a special plug forming an oil breather, or aesthetic considerations, such as the integration of a plug for filling engine oil in a housing style, for example of a cylinder head cover, particular to the associated vehicle, may require precise angular positioning of the plug.
  • the plug must also be able to be an element of a mechanism common to several automotive partners and be able to be easily identifiable stylistically, for example using a specific hubcap.
  • the present invention provides a device of the type described above, characterized in that the cylindrical orifice comprises a transverse annular partition provided with means for polarizing the angular position of insertion of the plug, and the underside has two clamping ramps, which protect the seal area of the seal from direct oil splashes.
  • the polarizing means comprise two asymmetrical recesses complementary to two asymmetrical lugs of the plug;
  • the underside of the partition has at least one protuberance providing a point of resistance at the end of the plug tightening stroke and an angular indexing stopper of the plug in the tight position;
  • An upper part of the body of the plug is provided with an attached hubcap, fitted elastically on the body and symmetrical with respect to an axial plane of the plug;
  • the body of the plug has in its upper part a manipulation lug of axial orientation and of substantially triangular shape, and that the hubcap has a complementary housing which determines a unique axial and angular position of the hubcap relative to the body plug;
  • the upper part of the plug body has a groove which carries an annular seal with radial action, and a lower part of smaller diameter, from which the two pins extend radially, is received through the central orifice of the partition.
  • FIG. 1 is a schematic exploded perspective view of the main elements of an oil filling device comprising a filling orifice, a plug and a hubcap, produced according to the invention
  • FIG. 2 is a partial axial sectional view, along line 2-2 of Figure 3, of the device of Figure 1 in which the oil filling orifice is closed by the plug shown in the tight and locked position ;
  • - Figure 3 is a top view of the oil filling orifice comprising its annular partition according to the invention
  • - Figure 4 is a developed view of the ramps of the annular wall according to the invention
  • - Figure 5 is a partial axial section view along line 5-5 of Figure 2 of a plug and its cover made according to the invention.
  • the device 10 comprises a filling orifice 12 comprising a transverse annular partition 14 which receives a plug 16 which is for example made of molded plastic, and enters the filling orifice 12 through its central orifice 17.
  • the plug 16 comprises, in its lower part of small diameter 28, two diametrically opposite locking and retaining pins 18 and 19 which are designed to be respectively received by complementary radial recesses 20 and 21 of the transverse partition 14 of the filling orifice 12.
  • the body of the closure plug 16 of the filling orifice 12 comprises a substantially triangular manipulation tab 22 which receives an embellishment 24 which is for example made of plastic material.
  • the cap cover 24 has in its upper part a handling tab 26 of substantially parallelepiped shape and allowing easy handling of the assembly consisting of the cover 24 and the plug 16 of the filling orifice 12.
  • the obturation of the filling orifice 12 by assembling the filling plug 16 and its hubcap 24 is particularly advantageous because it makes it possible to dissociate the mechanical functions of the obturation of the filling orifice 12 d '' possible aesthetic functions.
  • the filling plug 16 performs the mechanical locking, sealing and indexing functions, while the hubcap 24 provides the gripping function and plays an aesthetic role.
  • FIG. 2 illustrates in detail the mounting of the filling plug 16 in the filling orifice 12.
  • the annular partition 14 allows the passage through its circular central orifice 17 of a cylindrical lower part 28 of small diameter of the body of the filling plug 16, which carries the radial locking and retaining lugs 18 and 19 whose upper facets are provided to cooperate with by two peripheral ramps 30 carried by a lower face 1 3 of the transverse annular partition 14.
  • the filling orifice 12 is here constituted by an upper free end section of a frustoconical tubular filling duct, an upper part 32 of which has a chamfer 34 opening into the annular face of a free upper end 35 of the orifice filling 12 and allowing the introduction of a central part 36 of the filling plug 16.
  • the central cylindrical part 36 of large diameter, comprises a radial groove 38 which receives a toric seal 40 radial.
  • the axial distance between the lower transverse face 44 which delimits the central 36 and lower 28 parts of the plug 16 and the retaining and locking lugs 18 and 19 is such that a functional clearance J remains between the transverse face 44 and the upper face 23 of the annular partition 14.
  • This clearance J has the function of allowing the axial compression of the O-ring 40, which has on the one hand a sealing function and, on the other hand, a role of clamping spring in an axial direction substantially corresponding to the general axis of the filling orifice 12.
  • FIG. 3 illustrates the shapes of the transverse annular partition 14 of the filling orifice 12.
  • the transverse annular partition 14 has two radial recesses 20 and 21, asymmetrical and diametrically opposite, which respectively receive the locking and retaining lugs 1 8 and 19 of the filling plug 16 in order to ensure in particular polarization the angular orientation of the plug 16 with a view to its axial introduction into the filling orifice 12.
  • transverse annular partition 14 furthermore comprises, at the end of one of the ramps 30, a stop 50 allowing the filling plug 16 to stop rotating. after a quarter turn when the lug 19 comes into angular abutment against this stop.
  • the transverse annular partition 14 according to the invention is particularly advantageous insofar as it simultaneously performs four functions, in particular a function of angular polarization of the filling plug 16, a tightening and locking function of the bayonet type of the filling plug 16 thanks to the ramps 30, but also a screen function with oil splashes on the contact area of the seal 40, and finally a function of rotation stop of the filling plug 16 in an angular position determined by the stop 50.
  • Figure 4 illustrates the ramps 30 for tightening the plug 16.
  • the ramps 30 have on their lower faces which cooperate in axial support with the radial lugs 1 8 and 1 9 of the plug 16 of the inclined planes peripherals 52 which guide the movement of the plug 16 in rotation on the one hand and in an axial direction downwards on the other hand.
  • Each ramp 30 comprises, at the lower end of the inclined planes 52, a projection 54 which makes it possible to produce a hard point during the rotation of the filling plug 16 when the pins 18 and 19 of the filling plug 16 arrive at the end of the race. angular locking and cross these protuberances.
  • the protuberances 54 make it possible to materialize for the user the effective tightening of the filling plug 16 by the sensation of the increase in the tightening torque to be supplied.
  • the ramps 30 each comprise a plate 55 whose dimension precisely determines the final axial position of the plug 16 in the tight position and thus the vertical position of the seal 40 on its bearing surface 42.
  • one of the plates 55 is angularly delimited by the stop 50 at the end of the race.
  • FIG. 5 illustrates the mounting of the hubcap 24 on the filling plug 16.
  • the filling plug 24 is resiliently fitted on an external radial flange 58 of the upper part 1 5 of the filling plug 16.
  • the flange 58 cooperates with a complementary internal radial rib 56 of the hubcap 24 formed at the lower end edge of a cylindrical skirt 57 of the latter which deforms radially for mounting by elastic interlocking.
  • the manipulation tab 22 of the plug 16 is received in a complementary housing 25 of the hubcap.
  • the hubcap 24 being made of plastic material, its rigidity is ensured by pressing at the level of two internal ribs 60, which extend in two perpendicular parallel planes located symmetrically on either side of the plane of symmetry of the tab. manipulation 22 of the plug 16.
  • the internal ribs 60 are in contact with the manipulation tab of the filling plug 16.
  • the angular position of the hubcap 24 relative to the filling plug 16 is defined in a univocal and precise manner, on the one hand in the direction perpendicular to the plane of symmetry of the manipulation tab 22 by the interlocking of the ribs 60 on the manipulation tab 22, and on the other hand, by the complementarity of shape between a housing 25 of the hubcap 24 and the triangular shape of the manipulation tab 22 of the filling plug 16, which can be seen in FIG. 2.
  • the transverse partition 14 previously mentioned may consist of two half-rings extending radially inside the filling orifice 12 previously mentioned, ensuring the same functions, and arranged so that the asymmetrical radial recesses 20, 21 consist of the free spaces between these two half-rings and extend up to the internal wall of the filling orifice 12 previously mentioned.
  • the plug 16 may, as a variant, present in its upper part 15 a hollow imprint, coming in place of the manipulation tab 22 mentioned above, which includes means for angular positioning on the cap of the hubcap. 24 previously mentioned, for example using a female cylindrical seat in which a complementary male cylindrical seat of the plug is received and mounted tight when the plug is fitted, the preferential orientation of the hubcap relative to the environment being obtained during manufacture by assembling the hubcap on the plug in a determined position.
  • hubcaps each responding to a particular style.
  • the use of a cap common to all the hubcaps guarantees reduced manufacturing costs.
  • these may have manipulation tabs in various shapes and colors, extending for example radially along a radius greater than that of the filling orifice to facilitate their gripping in the manner of a lever.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • General Details Of Gearings (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Closures For Containers (AREA)

Abstract

The invention concerns a device for sealing (10) an oil-filling orifice (12) in a motor vehicle, wherein the upper free end of a truncated cylindrical filling orifice (12) receives a plug (16) bearing a ring-shaped fluid seal (40) comprising two diagonally opposite snugs (18) penetrating axially into the associated radial recesses (20, 21) of a central orifice (12) of the orifice and which, when clamped in rotation, co-operate respectively with two ramps borne by a lower transverse surface (13) of the cylindrical orifice, to produce a bayonet locking of the plug (16). The invention is characterised in that the orifice (12) comprises a transverse ring-shaped partition (14) including means for indexing the angular position of insertion of the plug (16), and the lower surface of which comprises the two clamping ramps, protecting the seal (40) from oil being splattered with oil.

Description

Dispositif d'obturation d'un orifice de remplissage d'huile Device for closing an oil filling orifice
L'invention concerne un dispositif d'obturation d'un orifice de remplissage d'huile. L'invention concerne plus particulièrement un dispositif d'obturation d'un orifice de remplissage d'huile d'un moteur, d'une boîte de vitesses, ou d'un différentiel de véhicule automobile, du type dans lequel l'extrémité libre supérieure d'un orifice cylindrique tronconique de remplissage reçoit un bouchon qui porte un joint annulaire d'étanchéité et qui comporte deux ergots diamétralement opposés qui pénètrent axialement dans des évidements radiaux associés de l'orifice cylindrique tronconique et qui, lors d u serrage en rotation, coopèrent respectivement avec deux rampes inclinées et périphériques portées par une face transversale inférieure de l'orifice cylindriq ue, pour permettre un verrouillage, du type à baïonnette, du bouchon en position fermée.The invention relates to a device for closing an oil filling orifice. The invention relates more particularly to a device for closing an oil filling orifice of an engine, a gearbox, or a differential of a motor vehicle, of the type in which the upper free end of a frustoconical cylindrical orifice for filling receives a plug which carries an annular seal and which comprises two diametrically opposite lugs which penetrate axially into associated radial recesses of the frustoconical cylindrical orifice and which, during tightening in rotation, cooperate respectively with two inclined and peripheral ramps carried by a lower transverse face of the cylindrical orifice, to allow locking, of the bayonet type, of the plug in the closed position.
On connaît de nombreux d ispositifs d'obturation d'orifice de remplissage d'huile comportant des bouchons munis de joints annulaires d'étanchéité. I l s'agit généralement de bouchons présentant un corps de forme légèrement tronconique et comportant une gorge dans laq uelle un joint toriq ue réalise l'étanchéité en se comprimant contre une face intérieure de l'orifice de remplissage dans laquelle il est reçu. L'adhérence du joint et le passage d'un point d ur des ergots au contact des rampes conditionnent la tenue d u bouchon dans l'orifice de remplissage.There are many known devices for closing the oil-filling orifice comprising plugs provided with annular seals. I t is generally plugs having a body of slightly frustoconical shape and having a groove in laq uelle a toriq ue seal provides compression by pressing against an inner face of the filling orifice in which it is received. The adhesion of the seal and the passage of a point of the pins in contact with the ramps condition the holding of a plug in the filling orifice.
On connaît aussi des dispositifs comportant un bouchon muni d'ergots élastiques permettant d'obtenir une fermeture après un quart de tour et de réaliser une étanchéité par compression d'un joint annulaire plat contre une face d'un carter. Dans ces deux cas, l'indexation angulaire n'est pas réalisée.There are also known devices comprising a plug provided with elastic lugs making it possible to obtain a closure after a quarter turn and to produce a seal by compression of a flat annular seal against a face of a casing. In these two cases, the angular indexing is not carried out.
Un problème se pose quand , pour des raisons fonctionnelles ou esthétiques, on souhaite réaliser un positionnement angulaire précis d u bouchon par rapport à l'orifice de remplissage d'huile. En effet, des dispositions constructives liées à la zone à étanchéifier, comme par exemple la pose d'un bouchon spécial formant reniflard d'huile, ou des considérations esthétiques , comme par exemple l'intégration d'un bouchon de remplissage d'huile moteur dans un style de carter, par exemple d'un couvre culasse, particulier au véhicule associé, peuvent nécessiter un positionnement angulaire précis du bouchon . Le bouchon doit en outre pouvoir être un élément d'une mécanique commune à plusieurs partenaires automobiles et pouvoir être facilement identifiable stylistiquement, par exemple à l'aide d'un enjoliveur spécifique.A problem arises when, for functional or aesthetic reasons, it is desired to achieve precise angular positioning of the plug relative to the oil filling orifice. Indeed, constructive provisions linked to the area to be sealed, such as the installation of a special plug forming an oil breather, or aesthetic considerations, such as the integration of a plug for filling engine oil in a housing style, for example of a cylinder head cover, particular to the associated vehicle, may require precise angular positioning of the plug. The plug must also be able to be an element of a mechanism common to several automotive partners and be able to be easily identifiable stylistically, for example using a specific hubcap.
Afin de remédier à ces inconvénients, la présente invention propose un dispositif du type décrit précédemment, caractérisé en ce que l'orifice cylind rique comporte une cloison annulaire transversale munie de moyens de détrompage de la position angulaire d'introduction du bouchon, et dont la face inférieure comporte les deux rampes de serrage, qui protègent la zone d'étanchéité du joint des projections directes d'huile. Selon d'autres caractéristiq ues de l'invention : les moyens de détrompage comportent deux évidements dissymétriques complémentaires de deux ergots dissymétriques du bouchon ;In order to remedy these drawbacks, the present invention provides a device of the type described above, characterized in that the cylindrical orifice comprises a transverse annular partition provided with means for polarizing the angular position of insertion of the plug, and the the underside has two clamping ramps, which protect the seal area of the seal from direct oil splashes. According to other characteristics of the invention: the polarizing means comprise two asymmetrical recesses complementary to two asymmetrical lugs of the plug;
- la face inférieure de la cloison comporte au moins une excroissance réalisant un point de résistance en fin de course de serrage du bouchon et une butée d'indexation angulaire d u bouchon en position serrée ; - une partie supérieure du corps du bouchon est munie d'un enjoliveur rapporté, emboîté élastiquement sur le corps et symétrique par rapport à un plan axial d u bouchon ;- The underside of the partition has at least one protuberance providing a point of resistance at the end of the plug tightening stroke and an angular indexing stopper of the plug in the tight position; - An upper part of the body of the plug is provided with an attached hubcap, fitted elastically on the body and symmetrical with respect to an axial plane of the plug;
- le corps du bouchon comporte dans sa partie supérieure une patte de manipulation d'orientation axiale et de forme sensiblement triangulaire, et q ue l'enjoliveur comporte un logement complémentaire qui détermine une position axiale et angulaire unique de l'enjoliveur par rapport au corps du bouchon ; - la partie supérieure du corps d u bouchon comporte une gorge qui porte un joint annulaire à action rad iale, et une partie inférieure de plus petit diamètre, à partir de laquelle les deux ergots s'étendent radialement, est reçue à travers l'orifice central de la cloison . D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description détaillée qui suit pour la compréhension de laquelle on se reportera aux dessins annexés dans lesquels :- The body of the plug has in its upper part a manipulation lug of axial orientation and of substantially triangular shape, and that the hubcap has a complementary housing which determines a unique axial and angular position of the hubcap relative to the body plug; - the upper part of the plug body has a groove which carries an annular seal with radial action, and a lower part of smaller diameter, from which the two pins extend radially, is received through the central orifice of the partition. Other characteristics and advantages of the invention will appear on reading the following detailed description for the understanding of which reference will be made to the appended drawings in which:
- la figure 1 est une vue schématique en perspective éclatée des principaux éléments d'un dispositif de remplissage d'huile comprenant un orifice de remplissage, un bouchon et un enjoliveur, réalisés suivant l'invention ;- Figure 1 is a schematic exploded perspective view of the main elements of an oil filling device comprising a filling orifice, a plug and a hubcap, produced according to the invention;
- la figure 2 est une vue en section axiale partielle, selon la ligne 2-2 de la figure 3, du dispositif de la figure 1 sur laquelle l'orifice de remplissage d'huile est obturé par le bouchon représenté en position serrée et verrouillée ;- Figure 2 is a partial axial sectional view, along line 2-2 of Figure 3, of the device of Figure 1 in which the oil filling orifice is closed by the plug shown in the tight and locked position ;
- la figure 3 est une vue de dessus de l'orifice de remplissage d'huile comportant de sa cloison annulaire selon l'invention ; - la figure 4 est une vue en développée des rampes de la cloison annulaire selon l'invention ; et - la figure 5 est une vue en section axiale partielle selon la ligne 5-5 de la figure 2 d'un bouchon et de son enjoliveur réalisés suivant l'invention .- Figure 3 is a top view of the oil filling orifice comprising its annular partition according to the invention; - Figure 4 is a developed view of the ramps of the annular wall according to the invention; and - Figure 5 is a partial axial section view along line 5-5 of Figure 2 of a plug and its cover made according to the invention.
On voit en perspective sur la figure 1 un dispositif d'obturation 10 d'un orifice de remplissage d'huile 12 réalisé suivant l'invention.We see in perspective in Figure 1 a closure device 10 of an oil filling orifice 12 made according to the invention.
Le dispositif 10 comporte un orifice de remplissage 12 comportant une cloison annulaire transversale 14 qui reçoit un bouchon 16 qui est par exemple réalisé moulé en matériau plastique, et pénètre dans l'orifice de remplissage 12 par son orifice central 17.The device 10 comprises a filling orifice 12 comprising a transverse annular partition 14 which receives a plug 16 which is for example made of molded plastic, and enters the filling orifice 12 through its central orifice 17.
Le bouchon 16 comporte, dans sa partie inférieure de petit diamètre 28, deux ergots de verrouillage et de retenue 1 8 et 19 diamétralement opposés qui sont conçus pour être respectivement reçus par des évidements radiaux complémentaires 20 et 21 de la cloison transversale 14 de l'orifice de remplissage 12. Dans sa partie supérieure 15, le corps du bouchon d'obturation 16 de l'orifice de remplissage 12 comporte une patte de manipulation 22 sensiblement triangulaire qui reçoit un enjoliveur 24 qui est par exemple réalisé en matériau plastique.The plug 16 comprises, in its lower part of small diameter 28, two diametrically opposite locking and retaining pins 18 and 19 which are designed to be respectively received by complementary radial recesses 20 and 21 of the transverse partition 14 of the filling orifice 12. In its upper part 15, the body of the closure plug 16 of the filling orifice 12 comprises a substantially triangular manipulation tab 22 which receives an embellishment 24 which is for example made of plastic material.
L'enjoliveur de bouchon 24 comporte dans sa partie supérieure une patte de manipulation 26 de forme sensiblement parallélépipédique et permettant une manipulation aisée de l'ensemble constitué de l'enjoliveur 24 et du bouchon 16 d'orifice de remplissage 12.The cap cover 24 has in its upper part a handling tab 26 of substantially parallelepiped shape and allowing easy handling of the assembly consisting of the cover 24 and the plug 16 of the filling orifice 12.
La réalisation d'une obturation de l'orifice de remplissage 12 par l'assemblage du bouchon de remplissage 16 et de son enjoliveur 24 est particulièrement avantageuse car elle permet de dissocier les fonctions mécaniques de l'obturation de l'orifice de remplissage 12 d'éventuelles fonctions esthétiques. En effet, le bouchon de remplissage 16 assure les fonctions mécaniques de verrouillage, d'étanchéité et d'indexation, tandis que l'enjoliveur 24 assure la fonction de préhension et joue un rôle esthétique.The obturation of the filling orifice 12 by assembling the filling plug 16 and its hubcap 24 is particularly advantageous because it makes it possible to dissociate the mechanical functions of the obturation of the filling orifice 12 d '' possible aesthetic functions. Indeed, the filling plug 16 performs the mechanical locking, sealing and indexing functions, while the hubcap 24 provides the gripping function and plays an aesthetic role.
La figure 2 illustre dans le détail le montage du bouchon de remplissage 16 dans l'orifice de remplissage 12.FIG. 2 illustrates in detail the mounting of the filling plug 16 in the filling orifice 12.
La cloison annulaire 14 permet le passage par son orifice central circulaire 17 d'une partie inférieure cylindrique 28 de petit diamètre du corps du bouchon de remplissage 16, qui porte les ergots radiaux de verrouillage et de retenue 18 et 19 dont les facettes supérieures sont prévues pour coopérer avec par deux rampes périphériques 30 portés par une face inférieure 1 3 de la cloison annulaire transversale 14.The annular partition 14 allows the passage through its circular central orifice 17 of a cylindrical lower part 28 of small diameter of the body of the filling plug 16, which carries the radial locking and retaining lugs 18 and 19 whose upper facets are provided to cooperate with by two peripheral ramps 30 carried by a lower face 1 3 of the transverse annular partition 14.
L'orifice de remplissage 12 est ici constitué par un tronçon supérieur d'extrémité libre d'une canalisation tubulaire tronconique de remplissage dont une partie supérieure 32 comporte un chanfrein 34 débouchant dans la face annulaire d'une extrémité supérieure libre 35 de l'orifice de remplissage 12 et permettant l'introduction d'une partie centrale 36 du bouchon de remplissage 16. La partie centrale cylind riq ue 36 , de g rand diamètre, comporte u ne gorge radiale 38 q ui reçoit un joint toriq ue 40 d'étanchéité radiale. Lors d u verrou illage d u bouchon de remplissage 16, le joint torique en matériau élastomère 40 est comprimé radialement entre le fond cylindrique convexe de la gorge 38 du bouchon de remplissage 16 et une portée tronconique concave 42 intérieure à l'orifice de remplissage 12 et débouchant dans sa partie supérieure 32.The filling orifice 12 is here constituted by an upper free end section of a frustoconical tubular filling duct, an upper part 32 of which has a chamfer 34 opening into the annular face of a free upper end 35 of the orifice filling 12 and allowing the introduction of a central part 36 of the filling plug 16. The central cylindrical part 36, of large diameter, comprises a radial groove 38 which receives a toric seal 40 radial. When the filling plug 16 is locked, the O-ring made of elastomeric material 40 is compressed radially between the convex cylindrical bottom of the groove 38 of the filling plug 16 and a concave frustoconical bearing 42 inside the filling orifice 12 and opening out. in its upper part 32.
La position et les dimensions formes de la cloison transversale 14, dont l'orifice central circulaire 17 a un diamètre inférieur à celui de la partie centrale 36 du bouchon de remplissage 16, permettent de protéger le joint torique 40 des projections d'huile à la manière d'un déflecteur ou d'une chicane.The position and shape dimensions of the transverse partition 14, whose circular central orifice 17 has a diameter less than that of the central part 36 of the filling plug 16, make it possible to protect the O-ring 40 splashes of oil like a deflector or a baffle.
Par ailleurs, la distance axiale entre la face transversale inférieure 44 qui délimite les parties centrale 36 et inférieure 28 du bouchon 16 et les ergots de retenue et de verrouillage 18 et 1 9 est telle qu'un jeu fonctionnel J subsiste entre la face transversale 44 et la face supérieure 23 de la cloison annulaire 14.Furthermore, the axial distance between the lower transverse face 44 which delimits the central 36 and lower 28 parts of the plug 16 and the retaining and locking lugs 18 and 19 is such that a functional clearance J remains between the transverse face 44 and the upper face 23 of the annular partition 14.
Ce jeu J a pour fonction de permettre la mise en compression axiale du joint torique 40, q ui a d'une part une fonction d'étanchéité et, d'autre part, un rôle de ressort de serrage dans une direction axiale sensiblement correspondante à l'axe général de l'orifice de remplissage 12.This clearance J has the function of allowing the axial compression of the O-ring 40, which has on the one hand a sealing function and, on the other hand, a role of clamping spring in an axial direction substantially corresponding to the general axis of the filling orifice 12.
La vue de dessus de la figure 3 illustre les formes de la cloison annulaire transversale 14 de l'orifice de remplissage 12.The top view of FIG. 3 illustrates the shapes of the transverse annular partition 14 of the filling orifice 12.
Conformément à l'invention , la cloison annulaire transversale 14 comporte deux évidements radiaux 20 et 21 , dissymétriques et diamétralement opposés, qui reçoivent respectivement les ergots de verrouillage et de retenue 1 8 et 19 du bouchon de remplissage 16 afin d'assurer notamment un détrompage de l'orientation angulaire du bouchon 16 en vue de son introduction axiale dans l'orifice de remplissage 12.According to the invention, the transverse annular partition 14 has two radial recesses 20 and 21, asymmetrical and diametrically opposite, which respectively receive the locking and retaining lugs 1 8 and 19 of the filling plug 16 in order to ensure in particular polarization the angular orientation of the plug 16 with a view to its axial introduction into the filling orifice 12.
En pointillés, on disting ue la trace de deux rampes 30 inclinées et périphériques, formées venues de matière par moulage sous la face inférieure 13 de la cloison annulaire transversale 14, qui permettent de réaliser le serrage du bouchon 16 selon la direction axiale de l'orifice de remplissage 12. La cloison annulaire transversale 14 comporte par ailleurs, à l'extrémité d'une des rampes 30, une butée 50 permettant l'arrêt en rotation du bouchon de remplissage 16 après un quart de tour lorsq ue l'ergot 19 vient en appui ang ulaire contre cette butée.In dotted lines, there is a trace of two inclined and peripheral ramps 30, formed integrally by molding under the underside 13 of the transverse annular partition 14, which make it possible to tighten the plug 16 in the axial direction of the filling orifice 12. The transverse annular partition 14 furthermore comprises, at the end of one of the ramps 30, a stop 50 allowing the filling plug 16 to stop rotating. after a quarter turn when the lug 19 comes into angular abutment against this stop.
La cloison annulaire transversale 14 selon l'invention est particulièrement avantageuse dans la mesure où elle réalise simultanément quatre fonctions, notamment une fonction de détrompage angulaire du bouchon de remplissage 16 , une fonction de serrage et de verrouillage du type à baïonnette du bouchon de remplissage 16 grâce aux rampes 30, mais aussi une fonction d'écran aux projections d'huile sur la zone de contact du joint 40, et enfin une fonction d'arrêt en rotation du bouchon de remplissage 16 dans une position angulaire déterminée par la butée 50.The transverse annular partition 14 according to the invention is particularly advantageous insofar as it simultaneously performs four functions, in particular a function of angular polarization of the filling plug 16, a tightening and locking function of the bayonet type of the filling plug 16 thanks to the ramps 30, but also a screen function with oil splashes on the contact area of the seal 40, and finally a function of rotation stop of the filling plug 16 in an angular position determined by the stop 50.
Ces quatre fonctions sont avantageusement réalisées par une seule forme moulée en matériau plastique ou en métal , ce qui est d'un excellent rapport en termes de coûts de fabrication.These four functions are advantageously carried out by a single molded form of plastic material or metal, which is an excellent ratio in terms of manufacturing costs.
La figure 4 illustre les rampes 30 permettant de réaliser le serrage d u bouchon 16. Conformément à l'invention, les rampes 30 comportent sur leurs faces inférieures qui coopèrent en appui axial avec les ergots radiaux 1 8 et 1 9 du bouchon 16 des plans inclinés périphériques 52 qui guident le mouvement du bouchon 16 en rotation d'une part et suivant une direction axiale vers le bas d'autre part.Figure 4 illustrates the ramps 30 for tightening the plug 16. According to the invention, the ramps 30 have on their lower faces which cooperate in axial support with the radial lugs 1 8 and 1 9 of the plug 16 of the inclined planes peripherals 52 which guide the movement of the plug 16 in rotation on the one hand and in an axial direction downwards on the other hand.
Chaque rampe 30 comporte, à l'extrémité inférieure des plans inclinés 52, une excroissance 54 qui permet de réaliser un point dur lors de la rotation du bouchon de remplissage 16 lorsque les ergots 18 et 19 du bouchon de remplissage 16 arrivent en fin de course angulaire de verrouillage et franchissent ces excroissances. De manière particulièrement avantageuse, les excroissances 54 permettent de matérialiser pour l'utilisateur le serrage effectif du bouchon de remplissage 16 par la sensation de l'augmentation du couple de serrage à fournir.Each ramp 30 comprises, at the lower end of the inclined planes 52, a projection 54 which makes it possible to produce a hard point during the rotation of the filling plug 16 when the pins 18 and 19 of the filling plug 16 arrive at the end of the race. angular locking and cross these protuberances. In a particularly advantageous manner, the protuberances 54 make it possible to materialize for the user the effective tightening of the filling plug 16 by the sensation of the increase in the tightening torque to be supplied.
Au delà des excroissances 54, les rampes 30 comportent chacune un plateau 55 dont la cote détermine avec précision la position axiale finale du bouchon 16 en position serrée et ainsi la position verticale d u joint 40 sur sa portée 42. l'un des plateaux 55 est délimité angulairement par la butée 50 en fin de course.Beyond the protuberances 54, the ramps 30 each comprise a plate 55 whose dimension precisely determines the final axial position of the plug 16 in the tight position and thus the vertical position of the seal 40 on its bearing surface 42. one of the plates 55 is angularly delimited by the stop 50 at the end of the race.
La figure 5 illustre le montage de l'enjoliveur 24 sur le bouchon de remplissage 16. Conformément à l'invention , le bouchon de remplissage 24 est emboîté élastiquement sur une collerette radiale externe 58 de la partie supérieure 1 5 du bouchon de remplissage 16. La collerette 58 coopère avec une nervure radiale interne complémentaire 56 de l'enjoliveur 24 formée au bord d'extrémité inférieur d'une jupe cylindrique 57 de ce dernier qui se déforme radialement en vue du montage par emboîtement élastique. Par ailleurs, la patte de manipulation 22 du bouchon 16 est reçue dans un logement complémentaire 25 de l'enjoliveur. L'enjoliveur 24 étant réalisé en matériau plastiq ue , sa rigidité est assurée par appui au niveau de deux nervures internes 60, qui s'étendent suivant deux plans parallèles perpendiculaires situés symétriquement de part et d'autre du plan de symétrie de la patte de manipulation 22 du bouchon 16. Les nervures internes 60 sont au contact de la patte de manipulation du bouchon de remplissage 16.FIG. 5 illustrates the mounting of the hubcap 24 on the filling plug 16. According to the invention, the filling plug 24 is resiliently fitted on an external radial flange 58 of the upper part 1 5 of the filling plug 16. The flange 58 cooperates with a complementary internal radial rib 56 of the hubcap 24 formed at the lower end edge of a cylindrical skirt 57 of the latter which deforms radially for mounting by elastic interlocking. Furthermore, the manipulation tab 22 of the plug 16 is received in a complementary housing 25 of the hubcap. The hubcap 24 being made of plastic material, its rigidity is ensured by pressing at the level of two internal ribs 60, which extend in two perpendicular parallel planes located symmetrically on either side of the plane of symmetry of the tab. manipulation 22 of the plug 16. The internal ribs 60 are in contact with the manipulation tab of the filling plug 16.
Par ailleurs, la position angulaire de l'enjoliveur 24 par rapport au bouchon de remplissage 16 est définie d'une manière univoq ue et précise, d'une part dans la direction perpendiculaire au plan de symétrie de la patte de manipulation 22 par l'emboîtement des nervures 60 sur la patte de manipulation 22, et d'autre part, par la complémentarité de forme entre un logement 25 de l'enjoliveur 24 et la forme triangulaire de la patte de manipulation 22 du bouchon de remplissage 16, que l'on peut voir à la figure 2.Furthermore, the angular position of the hubcap 24 relative to the filling plug 16 is defined in a univocal and precise manner, on the one hand in the direction perpendicular to the plane of symmetry of the manipulation tab 22 by the interlocking of the ribs 60 on the manipulation tab 22, and on the other hand, by the complementarity of shape between a housing 25 of the hubcap 24 and the triangular shape of the manipulation tab 22 of the filling plug 16, which can be seen in FIG. 2.
Cette disposition est particulièrement avantageuse, car le bouchon de remplissage 16 étant, en position serrée, indexé d'une façon univoque par rapport à l'orifice de remplissage 12, l'enjoliveur 24 ne peut donc prendre qu'une position angulaire unique par rapport à l'orifice de remplissage 12, ce qui permet d'intégrer l'enjoliveur 24 dans un style en fonction de son environnement.This arrangement is particularly advantageous, since the filling plug 16 being, in the clamped position, unequivocally indexed relative to the filling orifice 12, the hubcap 24 can therefore only assume a single angular position with respect to to the filling orifice 12, which makes it possible to integrate the hubcap 24 in a style according to its environment.
En variante (non représentée), la cloison transversale 14 précédemment évoquée, peut être constituée de deux demi- anneaux s'étendant radialement à l'intérieur de l'orifice de remplissage 12 précédemment évoqué , assurant les mêmes fonctions, et disposés de sorte que les évidements radiaux dissymétriques 20,21 sont constitués des espaces libres entre ces deux demi anneaux et se prolongent jusqu'à la paroi interne de l'orifice de remplissage 12 précédemment évoqué.As a variant (not shown), the transverse partition 14 previously mentioned, may consist of two half-rings extending radially inside the filling orifice 12 previously mentioned, ensuring the same functions, and arranged so that the asymmetrical radial recesses 20, 21 consist of the free spaces between these two half-rings and extend up to the internal wall of the filling orifice 12 previously mentioned.
Par ailleurs, le bouchon 16 peut, en variante, présenter dans sa partie supérieure 15 une empreinte en creux, venant en lieu et place de la patte de manipulation 22 précédemment évoquée, qui comporte des moyens de positionnement angulaire sur le bouchon de l'enjoliveur 24 précédemment évoqué, par exemple à l'aide d'une portée cylindrique femelle dans laquelle une portée cylindrique complémentaire mâle du bouchon est reçue et montée serrée lors de l'emboîtement du bouchon, l'orientation préférentielle de l'enjoliveur par rapport à l'environnement étant obtenue lors de la fabrication par l'assemblage de l'enjoliveur sur le bouchon dans une position déterminée.Furthermore, the plug 16 may, as a variant, present in its upper part 15 a hollow imprint, coming in place of the manipulation tab 22 mentioned above, which includes means for angular positioning on the cap of the hubcap. 24 previously mentioned, for example using a female cylindrical seat in which a complementary male cylindrical seat of the plug is received and mounted tight when the plug is fitted, the preferential orientation of the hubcap relative to the environment being obtained during manufacture by assembling the hubcap on the plug in a determined position.
Cette disposition est particulièrement avantageuse car elle permet d'emboîter sur le bouchon une grande variété d'enjoliveurs répondant chacun à un style particulier. L'emploi d'un bouchon commun à tous les enjoliveurs est gage de coûts de fabrication réduits. De plus, ceux-ci peuvent présenter des pattes de manipulation aux formes et couleurs diverses, s'étendant par exemple radialement suivant un rayon supérieur à celui de l'orifice de remplissage pour faciliter leur préhension à la manière d'un levier. This arrangement is particularly advantageous since it allows a wide variety of nests to be fitted onto the cap. hubcaps each responding to a particular style. The use of a cap common to all the hubcaps guarantees reduced manufacturing costs. In addition, these may have manipulation tabs in various shapes and colors, extending for example radially along a radius greater than that of the filling orifice to facilitate their gripping in the manner of a lever.

Claims

REVENDICATIONS
1 . Dispositif d'obturation (10) d'un orifice (12) de remplissage d'huile d'un moteur d'une boîte de vitesses, ou d'un différentiel de véhicule automobile, du type dans leq uel l'extrémité libre supérieure (35) d'un orifice cylindrique tronconique (12) de remplissage reçoit un bouchon (16) qui porte un joint annulaire (40) d'étanchéité et qui comporte deux ergots (1 8, 19) diamétralement opposés qui pénètrent axialement dans des évidements radiaux (20,21 ) associés d'un orifice central ( 17) de l'orifice cylindrique tronconique (12) et qui , lors du serrage en rotation , coopèrent respectivement avec deux rampes (30) inclinées et périphériques portées par une face transversale i nférieure ( 13) de l'orifice cylindrique, pour permettre un verrouillage, du type à baïonnette, d u bouchon (16) en position fermée, caractérisé en ce que l'orifice cylindrique (12) comporte une cloison annulaire transversale (14) comportant des moyens de détrompage de la position angulaire d'introduction du bouchon (16), et dont la face inférieure (13) comporte les deux rampes de serrage (30), qui protègent la zone d'étanchéité du joint (40) des projections directes d'huile.1. Closing device (10) for an orifice (12) for filling the oil of a gearbox engine, or of a motor vehicle differential, of the type in which the upper free end ( 35) of a frustoconical cylindrical orifice (12) for filling receives a plug (16) which carries an annular seal (40) sealing and which comprises two diametrically opposed lugs (1 8, 19) which penetrate axially into radial recesses (20,21) associated with a central orifice (17) of the frustoconical cylindrical orifice (12) and which, during tightening in rotation, cooperate respectively with two ramps (30) inclined and peripheral carried by a transverse face i nf inférieur (13) of the cylindrical orifice, to allow locking, of the bayonet type, of the plug (16) in the closed position, characterized in that the cylindrical orifice (12) comprises a transverse annular partition (14) comprising means of angular position polarization ire of introduction of the plug (16), and the lower face (13) of which comprises the two clamping ramps (30), which protect the sealing zone of the seal (40) from direct oil projections.
2. Dispositif d'obturation (10) selon la revendication 1 , caractérisé en ce que les moyens de détrompage comportent deux évidements dissymétriques (20,21 ) complémentaires de deux ergots dissymétriques (18, 19) du bouchon (16).2. Sealing device (10) according to claim 1, characterized in that the polarizing means comprise two asymmetrical recesses (20,21) complementary to two asymmetrical pins (18, 19) of the plug (16).
3. Dispositif d'obturation (10) selon la revendication 1 ou 2, caractérisé en ce que la face inférieure (13) de la cloison annulaire transversale (14) comporte au moins une excroissance (54) réalisant un point de résistance en fin de course de serrage du bouchon (16) et une butée d'indexation (50) angulaire du bouchon (16) en position serrée. 3. obturation device (10) according to claim 1 or 2, characterized in that the lower face (13) of the transverse annular partition (14) comprises at least one projection (54) achieving a point of resistance at the end of tightening stroke of the plug (16) and an angular indexing stop (50) of the plug (16) in the tightened position.
4. Dispositif d'obturation ( 1 0) selon la revendication 1 , caractérisé en ce qu'une partie supérieure (15) du corps du bouchon (16) est munie d'un enjoliveur rapporté (24), emboîté élastiquement sur la partie supérieure (15) du bouchon (16), et symétrique par rapport à un plan axial du bouchon (16) .4. Sealing device (1 0) according to claim 1, characterized in that an upper part (15) of the body of the plug (16) is provided with an attached cover (24), fitted elastically on the upper part (15) of the plug (16), and symmetrical with respect to an axial plane of the plug (16).
5. Dispositif d'obturation (1 0) selon la revendication 4, caractérisé en ce que le corps du bouchon ( 16) comporte dans sa partie supérieure (15) une patte de manipulation (22) d'orientation axiale et de forme sensiblement triangulaire ,et en ce que l'enjoliveur (24) comporte un logement complémentaire (25) et des nervures (60) qui déterminent une position axiale et angulaire unique de l'enjoliveur (24) par rapport au corps du bouchon (16) .5. Sealing device (1 0) according to claim 4, characterized in that the body of the plug (16) has in its upper part (15) a manipulation tab (22) of axial orientation and of substantially triangular shape , and in that the hubcap (24) comprises a complementary housing (25) and ribs (60) which determine a single axial and angular position of the hubcap (24) relative to the body of the plug (16).
6. Dispositif d'obturation (10) selon la revendication 4, caractérisé en ce que la partie supérieure (15) du corps du bouchon (16) comporte une gorge (38) qui porte un joint annulaire (40) à action radiale, et qu'une partie inférieure (28) de plus petit diamètre, à partir de laquelle les deux ergots (18, 19) s'étendent radialement est reçue à travers l'orifice central (17) de la cloison (14). 6. obturation device (10) according to claim 4, characterized in that the upper part (15) of the body of the plug (16) has a groove (38) which carries an annular seal (40) with radial action, and that a lower portion (28) of smaller diameter, from which the two pins (18, 19) extend radially is received through the central orifice (17) of the partition (14).
EP98962507A 1997-12-22 1998-12-18 Device for sealing an oil-filling orifice Expired - Lifetime EP1042593B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9716268A FR2772828B1 (en) 1997-12-22 1997-12-22 DEVICE FOR SEALING AN OIL FILLING PORT
FR9716268 1997-12-22
PCT/FR1998/002779 WO1999032765A1 (en) 1997-12-22 1998-12-18 Device for sealing an oil-filling orifice

Publications (2)

Publication Number Publication Date
EP1042593A1 true EP1042593A1 (en) 2000-10-11
EP1042593B1 EP1042593B1 (en) 2003-02-12

Family

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EP98962507A Expired - Lifetime EP1042593B1 (en) 1997-12-22 1998-12-18 Device for sealing an oil-filling orifice

Country Status (5)

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EP (1) EP1042593B1 (en)
DE (1) DE69811401T2 (en)
ES (1) ES2192803T3 (en)
FR (1) FR2772828B1 (en)
WO (1) WO1999032765A1 (en)

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DE102004049032B4 (en) * 2004-10-08 2006-06-14 Audi Ag Plug for sealing bores in cylinder head covers comprises disk-shaped cap attached to tubular lower section which is split to form two spring strips on opposite sides with flange which engages with seating on cover
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US8069952B2 (en) * 2006-12-06 2011-12-06 Basf Aktiengesellschaft Fluid reservoir assembly
DE102008004084A1 (en) 2008-01-12 2009-07-16 Daimler Ag Closure receiving device for oil filling opening of motor vehicle, has free sections formed between locking sections, and operating stop for preventing locking movement of closure cap when cap is not provided in locking starting position
DE102010048711B4 (en) * 2010-10-19 2015-11-12 Ibs Filtran Kunststoff-/ Metallerzeugnisse Gmbh Receptacle for a fluid, in particular engine oil pan or transmission oil pan for a motor vehicle
US20120174888A1 (en) * 2011-01-11 2012-07-12 GM Global Technology Operations LLC Quick-release cap with ejection ramp
DE102011050152B4 (en) 2011-05-06 2023-06-22 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Service unit for supplementing equipment
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Also Published As

Publication number Publication date
EP1042593B1 (en) 2003-02-12
FR2772828A1 (en) 1999-06-25
FR2772828B1 (en) 2000-02-25
DE69811401D1 (en) 2003-03-20
ES2192803T3 (en) 2003-10-16
DE69811401T2 (en) 2003-11-27
WO1999032765A1 (en) 1999-07-01

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