EP0628718A1 - Sealing arrangement of starter drive for internal combustion engine and method for carrying out this arrangement - Google Patents

Sealing arrangement of starter drive for internal combustion engine and method for carrying out this arrangement Download PDF

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Publication number
EP0628718A1
EP0628718A1 EP94108535A EP94108535A EP0628718A1 EP 0628718 A1 EP0628718 A1 EP 0628718A1 EP 94108535 A EP94108535 A EP 94108535A EP 94108535 A EP94108535 A EP 94108535A EP 0628718 A1 EP0628718 A1 EP 0628718A1
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EP
European Patent Office
Prior art keywords
plug
pinion
front face
groove
sealing device
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Granted
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EP94108535A
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German (de)
French (fr)
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EP0628718B1 (en
Inventor
Gérard Vilou
André Demoule
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Valeo Equipements Electriques Moteur SAS
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Valeo Equipements Electriques Moteur SAS
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N15/00—Other power-operated starting apparatus; Component parts, details, or accessories, not provided for in, or of interest apart from groups F02N5/00 - F02N13/00
    • F02N15/02—Gearing between starting-engines and started engines; Engagement or disengagement thereof
    • F02N15/04—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears
    • F02N15/06—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears the toothed gears being moved by axial displacement
    • F02N15/062—Starter drives
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N2250/00—Problems related to engine starting or engine's starting apparatus
    • F02N2250/08—Lubrication of starters; Sealing means for starters

Definitions

  • the present invention relates to a starter launcher sealing device for an internal combustion engine as well as the method for implementing such a device.
  • a launcher of this type consists of a motor shaft linked to the electric motor of the starter, shaft on which is rotatably mounted a starter pinion which can move axially until it engages with a ring gear located on the flywheel , the axial movement of the starter pinion being limited by a starter stop secured to the motor shaft.
  • This protection is particularly essential in launchers of the outgoing pinion type, the end of which must be perfectly sealed so that no gaseous, liquid or solid material can penetrate into the bore which the pinion has and avoid any risk of damage to the friction surfaces between the bearing and the starter shaft.
  • devices which consist of plugs crimped in particular on the outside of the pinion or held in place by an elastic rod partially embedded in a groove in the pinion.
  • the joint and / or the rod have complementary parts with assembly means which are difficult to automate and which, consequently, increase the cost of the launcher and therefore of the starter assembly especially when it comes to mass production as is the case in the automotive field.
  • a starter launcher sealing device for an internal combustion engine comprising in particular a starter pinion with, in its central part, a bore opening on a front face of the pinion and in which is formed a groove having, on the front face side an edge, and a sealing plug, characterized in that said plug, once assembled, bears on the front face a flange connected by a cylindrical part to a flat bottom whose periphery outer has a bulge cooperating with the edge of the groove.
  • the distance separating the front face of the pinion from the edge of the groove is less than the distance separating the flange of the plug from its bottom before assembly.
  • FIG. 1 represents the end of a pinion 10 of a starter launcher for an internal combustion engine.
  • This pinion 10 is guided in rotation by a ball bearing 12 housed in one end 14 of the starter casing.
  • the pinion 10 has at its end a toothed ring 16 which, in the working position of the launcher, is intended to mesh with a toothed ring (not shown) located on the flywheel.
  • the end of the pinion 10 is outside the starter casing: it is therefore, in the example shown a launcher said outgoing pinion.
  • the pinion 10 has a central bore 18 inside which axially slides, in a manner known per se, a drive shaft (not shown) and its diameter has been designated by DA.
  • a groove 20 having an edge 36 at a distance LG from the front face 22 of the pinion 10.
  • This sealing plug 24 is made of stamped sheet steel and is in the general form of a cup whose bottom 26 is domed for reasons which will be explained further.
  • the bottom 26, opening side of the plug is thus a concave surface which is in section in the form of a circular arc the length of which is greater than the diameter DA of the bore 18 of the pinion 10.
  • the plug 24 comprises, on the opening side, a flange 28 which is connected to the bottom 26 by a cylindrical part 34, the diameter of which is substantially equal to the diameter of the bore 18.
  • the distance between the flange 28 and the peripheral inner face 30 of the bottom 26 is designated by LB, by LT the distance between the flange 28 and the peripheral external face 32 of the bottom 26, by e the thickness of the walls of the plug and by DB the outside diameter of the cylindrical part of the plug.
  • FIG. 3 illustrates the sealing plug 24 placed in the bore 18 of the pinion 10 according to a process the steps of which are described below.
  • the first step consists in working out by stamping a plug 24 having a flange 28 and a concave convex bottom 26.
  • the next step is to introduce the plug 24 into the bore 18 and to maintain the flange 28 in support against the front face 22 of the pinion 10.
  • the following steps consist in introducing into the plug 24 a punch with a flat bottom, the pressure on the bottom 26 of which passes the latter from a curved surface to a flat radial surface, to cause, on the one hand, an increase in the length LB by an extension and, on the other hand, to cause swelling of its diameter at the bottom 26 so as to obtain a metal reflux at the edge 36 of the groove 20, nearest edge of the front face 22 of the pinion 10, the plug then having a bulge 38.
  • the next step is to remove the action of the punch which results in returning the length LB to its initial value and therefore to pressurize the deformed area 38 of the bottom 26 of the plug 34 against the edge 36 of the groove 20 which results in perfect metal-to-metal sealing and immobilization in translation of said sealing plug.
  • cap a material identical to that of the pinion: thus the assembly produced does not undergo differential expansion which allows it to make its qualities, both mechanically and sealingly, insensitive to temperature variations .
  • the length LG at which the edge 36 of the groove 20 of the front face 22 of the pinion is located is less than the length LB of the plug 34.
  • LG LB - (nxe) e being the thickness of the plug 34.
  • n is between 0.5 and 2.
  • the plug 24 put in place in the bore 18 is in the general form of a cup comprising a flange 28 connected by a cylindrical part 34 to a flat bottom 26 whose outer periphery has a bulge 38 cooperating with an edge 36 of the groove 20 of the bore 18 of pinion 10.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gasket Seals (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • General Details Of Gearings (AREA)
  • Rotary Pumps (AREA)

Abstract

Starter drive sealing device for internal combustion engine especially including a starter pinion (10) with, in its central part, a bore (18) emerging on a front face (22) of the pinion (10) and in which a groove (20) is made having, on the front face side (22) a ridge (36) and a sealing plug (24), characterised in that the said plug, once fitted, has, bearing on the front face (22) a collar (28) joined on by a cylindrical part (34) with a flat bottom (26) the outer periphery of which has a swelling (38) interacting with the ridge (36) of the groove (20). <IMAGE>

Description

La présente invention concerne un dispositif d'étanchéité de lanceur de démarrreur pour moteur à combustion interne ainsi que le procédé pour la mise en oeuvre d'un tel dispositif.The present invention relates to a starter launcher sealing device for an internal combustion engine as well as the method for implementing such a device.

Un lanceur de ce type est constitué d'un arbre moteur lié au moteur électrique du démarreur, arbre sur lequel est monté solidaire en rotation un pignon lanceur pouvant se déplacer axialement jusqu'à son entrée en prise avec une couronne dentée située sur le volant moteur, le déplacement axial du pignon lanceur étant limité par une butée de lanceur solidaire de l'arbre moteur.A launcher of this type consists of a motor shaft linked to the electric motor of the starter, shaft on which is rotatably mounted a starter pinion which can move axially until it engages with a ring gear located on the flywheel , the axial movement of the starter pinion being limited by a starter stop secured to the motor shaft.

Le démarreur et en particulier le lanceur qui l'équipe sont soumis à des agressions mécaniques diverses résultant de l'environnement dans lequel ils doivent fonctionner et il est nécessaire de protéger de manière étanche toutes les parties ayant des mouvements relatifs.The starter and in particular the launcher which equips it are subjected to various mechanical aggressions resulting from the environment in which they must operate and it is necessary to tightly protect all the parts having relative movements.

Cette protection s'avère particulièrement indispensable dans les lanceurs du type à pignon sortant dont l'extrémité doit être parfaitement étanche de façon à ce qu'aucune matière gazeuse, liquide ou solide ne puisse pénétrer dans l'alésage que présente le pignon et d'éviter ainsi tout risque de détérioration des surfaces frottantes entre coussinet et arbre du démarreur.This protection is particularly essential in launchers of the outgoing pinion type, the end of which must be perfectly sealed so that no gaseous, liquid or solid material can penetrate into the bore which the pinion has and avoid any risk of damage to the friction surfaces between the bearing and the starter shaft.

Pour assurer cette fonction d'étanchéité, on connait des dispositifs constitués de bouchons sertis en particulier sur l'extérieur du pignon ou maintenus en place par un jonc élastique encastré partiellement dans une gorge du pignon.To ensure this sealing function, devices are known which consist of plugs crimped in particular on the outside of the pinion or held in place by an elastic rod partially embedded in a groove in the pinion.

Ces dispositifs présentent divers inconvénients et en particulier une qualité d'étanchéité insuffisante de telle sorte qu'il est nécessaire d'adjoindre au bouchon un joint d'étanchéité par exemple en élastomère.These devices have various drawbacks and in particular an insufficient seal quality so that it is necessary to add to the cap a seal, for example made of elastomer.

Le joint et/ou le jonc présentent des pièces complémentaires avec des moyens d'assemblage qui sont difficilement automatisables et qui, par conséquent, augmentent le coût du lanceur et donc de l'ensemble du démarreur surtout quand il s'agit de fabrication en grande série comme c'est le cas dans le domaine automobile.The joint and / or the rod have complementary parts with assembly means which are difficult to automate and which, consequently, increase the cost of the launcher and therefore of the starter assembly especially when it comes to mass production as is the case in the automotive field.

De plus, l'implantation de tels éléments nécessite la présence de gorges profondes et donc un encombrement important du pignon lanceur, ce qui rend l'utilisation de tels dispositifs inadaptée aux pignons de faibles dimensions.In addition, the installation of such elements requires the presence of deep grooves and therefore a large size of the starter pinion, which makes the use of such devices unsuitable for pinions of small dimensions.

La présente invention résout ces problèmes et propose à cet effet un dispositif d'étanchéité de lanceur de démarreur pour moteur à combustion interne comportant notamment un pignon lanceur avec, dans sa partie centrale, un alésage débouchant sur une face frontale du pignon et dans lequel est ménagée une gorge présentant, côté face frontale une arête, et un bouchon d'étanchéité, caractérisé en ce que ledit bouchon, une fois assemblé, comporte en appui sur la face frontale une collerette raccordée par une partie cylindrique à un fond plat dont la périphérie extérieure présente un renflement coopérant avec l'arête de la gorge.The present invention solves these problems and proposes for this purpose a starter launcher sealing device for an internal combustion engine comprising in particular a starter pinion with, in its central part, a bore opening on a front face of the pinion and in which is formed a groove having, on the front face side an edge, and a sealing plug, characterized in that said plug, once assembled, bears on the front face a flange connected by a cylindrical part to a flat bottom whose periphery outer has a bulge cooperating with the edge of the groove.

Selon une réalisation préférentielle le diamètre de la partie cylindrique du bouchon est sensiblement égal au diamètre de l'alésage du pignon.According to a preferred embodiment the diameter of the cylindrical part of the plug is substantially equal to the diameter of the bore of the pinion.

La présente invention concerne également un procédé pour la mise en oeuvre d'un tel dispositif d'étanchéité, procédé caractérisé en ce qu'il comprend les étapes suivantes :

  • on élabore par emboutissage un bouchon d'étanchéité comportant une collerette raccordée par une partie cylindrique à un fond bombé présentant, côté ouverture, une surface concave ;
  • on introduit le bouchon dans un alésage d'un pignon de manière à ce que sa collerette soit en butée contre la face frontale dudit pignon ;
  • on provoque, par l'introduction d'un poinçon dans la partie cylindrique du bouchon, un allongement de la longeur dudit bouchon et un redressement du fond bombé qui a pour résultat la formation, à la périphérie dudit fond, d'un renflement qui pénètre dans la gorge ;
  • par retrait du poinçon, on met en pression le renflement contre l'arête de la gorge.
The present invention also relates to a process for the implementation of such a sealing device, a process characterized in that it comprises the following steps:
  • a sealing plug is formed by stamping comprising a flange connected by a cylindrical part to a convex bottom having, on the opening side, a concave surface;
  • the plug is introduced into a bore of a pinion so that its collar is in abutment against the front face of said pinion;
  • we provoke, by the introduction of a punch in the cylindrical part of the plug, an elongation of the length of said plug and a straightening of the curved bottom which results in the formation, at the periphery of said bottom, of a bulge which penetrates into the groove;
  • by withdrawal of the punch, the bulge is pressed against the edge of the groove.

Selon une autre caractéristique du procédé, la distance séparant la face frontale du pignon de l'arête de la gorge est inférieure à la distance séparant la collerette du bouchon de son fond avant assemblage.According to another characteristic of the method, the distance separating the front face of the pinion from the edge of the groove is less than the distance separating the flange of the plug from its bottom before assembly.

La présente invention sera mieux comprise à la lecture de la description qui va suivre en regard des dessins annexés dans lesquels :

  • la figure 1 est une vue en coupe longitudinale d'une extrémité d'un pignon lanceur de démarreur avant assemblage d'un bouchon d'étanchéité ;
  • la figure 2 est une vue en coupe longitudinale d'un bouchon d'étanchéité avant son assemblage sur le pignon lanceur ;
  • la figure 3 est une vue en coupe longitudinale à échelle agrandie du bouchon d'étanchéité une fois assemblé surle pignon lanceur.
The present invention will be better understood on reading the description which follows with reference to the appended drawings in which:
  • Figure 1 is a longitudinal sectional view of one end of a starter starter pinion before assembly of a sealing plug;
  • Figure 2 is a longitudinal sectional view of a sealing plug before its assembly on the starter pinion;
  • Figure 3 is a longitudinal sectional view on an enlarged scale of the sealing plug once assembled on the starter pinion.

On se réfère tout d'abord à la figure 1 qui représente l'extrémité d'un pignon 10 d'un lanceur de démarreur pour moteur à combustion interne.Reference is first made to FIG. 1 which represents the end of a pinion 10 of a starter launcher for an internal combustion engine.

Ce pignon 10 est guidé en rotation par un roulement à bille 12 logé dans une extrémité 14 de la carcasse du démarreur.This pinion 10 is guided in rotation by a ball bearing 12 housed in one end 14 of the starter casing.

Le pignon 10 présente à son extrémité une couronne dentée 16 qui, dans la position de travail du lanceur, est destinée à engrener avec une couronne dentée (non représentée) située sur le volant moteur.The pinion 10 has at its end a toothed ring 16 which, in the working position of the launcher, is intended to mesh with a toothed ring (not shown) located on the flywheel.

Comme on peut le voir sur la figure 1, l'extrémité du pignon 10 est à l'extérieur de la carcasse du démarreur : il s'agit donc, dans l'exemple représenté d'un lanceur dit à pignon sortant.As can be seen in Figure 1, the end of the pinion 10 is outside the starter casing: it is therefore, in the example shown a launcher said outgoing pinion.

Le pignon 10 comporte un alésage central 18 à l'intérieur duquel vient coulisser axialement, de manière connue en soi, un arbre moteur (non représenté) et l'on a désigné par DA son diamètre.The pinion 10 has a central bore 18 inside which axially slides, in a manner known per se, a drive shaft (not shown) and its diameter has been designated by DA.

Dans l'alésage 18 est ménagée une gorge 20 présentant une arête 36 à une distance LG de la face frontale 22 du pignon 10.In the bore 18 is formed a groove 20 having an edge 36 at a distance LG from the front face 22 of the pinion 10.

On se réfère à la figure 2 sur laquelle on a représenté un bouchon d'étanchéité 24 avant son montage dans le pignon 10.Reference is made to FIG. 2 in which a sealing plug 24 has been shown before it is mounted in the pinion 10.

Ce bouchon d'étanchéité 24 est réalisé en tôle d'acier emboutie et se présente sous la forme générale d'une coupelle dont le fond 26 est bombé pour des raisons qui seront explicitées plus avant. Le fond 26, côté ouverture du bouchon, est ainsi une surface concave qui se présente en coupe sous la forme d'un arc de cercle dont la longueur est supérieure au diamètre DA de l'alésage 18 du pignon 10.This sealing plug 24 is made of stamped sheet steel and is in the general form of a cup whose bottom 26 is domed for reasons which will be explained further. The bottom 26, opening side of the plug, is thus a concave surface which is in section in the form of a circular arc the length of which is greater than the diameter DA of the bore 18 of the pinion 10.

Le bouchon 24 comporte, côté ouverture, une collerette 28 se raccordant au fond 26 par une partie cylindrique 34 dont le diamètre est sensiblement égal au diamètre de l'alésage 18.The plug 24 comprises, on the opening side, a flange 28 which is connected to the bottom 26 by a cylindrical part 34, the diameter of which is substantially equal to the diameter of the bore 18.

On désigne par LB la distance entre la collerette 28 et la face intérieure périphérique 30 du fond 26, par LT la distance entre la collerette 28 et la face extérieure périphérique 32 du fond 26, par e l'épaisseur des parois du bouchon et par DB le diamètre extérieur de la partie cylindrique du bouchon.The distance between the flange 28 and the peripheral inner face 30 of the bottom 26 is designated by LB, by LT the distance between the flange 28 and the peripheral external face 32 of the bottom 26, by e the thickness of the walls of the plug and by DB the outside diameter of the cylindrical part of the plug.

La figure 3 illustre le bouchon d'étanchéité 24 mis en place dans l'alésage 18 du pignon 10 suivant un procédé dont les étapes sont décrites ci-après.FIG. 3 illustrates the sealing plug 24 placed in the bore 18 of the pinion 10 according to a process the steps of which are described below.

La première étape consiste à élaborer par emboutissage un bouchon 24 présentant une collerette 28 et un fond bombé concave 26.The first step consists in working out by stamping a plug 24 having a flange 28 and a concave convex bottom 26.

L'étape suivante consiste à introduire le bouchon 24 dans l'alésage 18 et à maintenir la collerette 28 en appui contre la face frontale 22 du pignon 10.The next step is to introduce the plug 24 into the bore 18 and to maintain the flange 28 in support against the front face 22 of the pinion 10.

Les étapes suivantes consistent à introduire dans le bouchon 24 un poinçon à fond plat dont la pression sur le fond 26 fait passer celui-ci d'une surface bombée à une surface radiale plane, à provoquer, d'une part, une augmentation de la longueur LB par une mise en extension et, d'autre part, à provoquer un gonflement de son diamètre au niveau du fond 26 de manière à obtenir un reflux de métal au niveau de l'arête 36 de la gorge 20, arête la plus proche de la face frontale 22 du pignon 10, le bouchon présentant alors un renflement 38.The following steps consist in introducing into the plug 24 a punch with a flat bottom, the pressure on the bottom 26 of which passes the latter from a curved surface to a flat radial surface, to cause, on the one hand, an increase in the length LB by an extension and, on the other hand, to cause swelling of its diameter at the bottom 26 so as to obtain a metal reflux at the edge 36 of the groove 20, nearest edge of the front face 22 of the pinion 10, the plug then having a bulge 38.

L'étape suivante consiste à supprimer l'action du poinçon ce qui a pour résultat de faire revenir la longueur LB à sa valeur initiale et donc de mettre en pression la zone déformée 38 du fond 26 du bouchon 34 contre l'arête 36 de la gorge 20 ce qui entraîne une parfaite étanchéité métal sur métal et une immobilisation en translation dudit bouchon d'étanchéité.The next step is to remove the action of the punch which results in returning the length LB to its initial value and therefore to pressurize the deformed area 38 of the bottom 26 of the plug 34 against the edge 36 of the groove 20 which results in perfect metal-to-metal sealing and immobilization in translation of said sealing plug.

On choisit pour le bouchon une matière identique à celle du pignon : ainsi l'assemblage réalisé ne subit pas de dilation différentielle ce qui lui permet de rendre ses qualités, aussi bien sur le plan mécanique que sur le plan étanchéité, insensibles aux variations de température.We choose for the cap a material identical to that of the pinion: thus the assembly produced does not undergo differential expansion which allows it to make its qualities, both mechanically and sealingly, insensitive to temperature variations .

On appréciera que la mise en oeuvre du dispositif suivant l'invention est particulièrement simple, facilement automatisable et ne nécessite aucune pièce supplémentaire.It will be appreciated that the implementation of the device according to the invention is particularly simple, easily automated and requires no additional parts.

On notera que la longueur LG à laquelle se situe l'arête 36 de la gorge 20 de la face frontale 22 du pignon est inférieure à la longeur LB du bouchon 34.It will be noted that the length LG at which the edge 36 of the groove 20 of the front face 22 of the pinion is located is less than the length LB of the plug 34.

Plus précisément LG = LB - (n x e)

Figure imgb0001
e étant l'épaisseur du bouchon 34.More precisely LG = LB - (nxe)
Figure imgb0001
 e being the thickness of the plug 34.

De manière préférentielle n est compris entre 0,5 et 2.Preferably n is between 0.5 and 2.

Comme le montre la figure 3, le bouchon 24 mis en place dans l'alésage 18 se présente sous la forme générale d'une coupelle comportant une collerette 28 raccordée par une partie cylindrique 34 à un fond plat 26 dont la périphérie extérieure présente un renflement 38 coopérant avec une arête 36 de la gorge 20 de l'alésage 18 du pignon 10.As shown in Figure 3, the plug 24 put in place in the bore 18 is in the general form of a cup comprising a flange 28 connected by a cylindrical part 34 to a flat bottom 26 whose outer periphery has a bulge 38 cooperating with an edge 36 of the groove 20 of the bore 18 of pinion 10.

Bien entendu la présente invention ne se limite pas aux formes de réalisations décrites ou représentées mais englobe toute variante que l'homme de l'art pourrait y apporter.Of course the present invention is not limited to the embodiments described or shown but encompasses any variant that a person skilled in the art could make.

Claims (9)

Dispositif d'étanchéité de lanceur de démarreur pour moteur à combustion interne comportant notamment un pignon lanceur (10) avec dans sa partie centrale un alésage (18) débouchant sur une face frontale (22) du pignon (10) et dans lequel est ménagée une gorge (20) présentant, côté face frontale (22), une arête (36) et un bouchon d'étanchéité (24), caractérisé en ce que ledit bouchon, une fois assemblé, comporte, en appui sur la face frontale (22), une collerette (28) raccordée par une partie cylindrique (34) à un fond plat (26) dont la périphérie extérieure présente un renflement (38) coopérant avec l'arête (36) de la gorge (20).Starter launcher sealing device for an internal combustion engine comprising in particular a starter pinion (10) with in its central part a bore (18) opening onto a front face (22) of the pinion (10) and in which a groove (20) having, on the front face side (22), an edge (36) and a sealing plug (24), characterized in that said plug, once assembled, comprises, bearing on the front face (22) , a flange (28) connected by a cylindrical part (34) to a flat bottom (26) whose outer periphery has a bulge (38) cooperating with the edge (36) of the groove (20). Dispositif d'étanchéité selon la revendication 1, caractérisé en ce que le diamètre de la partie cylindrique (34) du bouchon (24) est sensiblement égal au diamètre de l'alésage (18) du pignon (10).Sealing device according to claim 1, characterized in that the diameter of the cylindrical part (34) of the plug (24) is substantially equal to the diameter of the bore (18) of the pinion (10). Dispositif d'étanchéité selon la revendication 1, caractérisé en ce que la distance (LG) séparant la face frontale (22) du pignon (10) de l'arête (36) de la gorge (20) est inférieure à la distance (LB) séparant la collerette (28) du bouchon (24) de son fond (26) avant assemblage.Sealing device according to claim 1, characterized in that the distance (LG) separating the front face (22) of the pinion (10) of the edge (36) of the groove (20) is less than the distance (LB ) separating the collar (28) of the plug (24) from its bottom (26) before assembly. Dispositif d'étanchéité selon la revendication 3, caractérisé en ce que les distances (LG) et (LB) satisfont à l'égalité LG = LB - (n x e)
Figure imgb0002
 e désignant l'épaisseur du bouchon (24).Sealing device according to claim 3, characterized in that the distances (LG) and (LB) satisfy equality LG = LB - (nxe)
Figure imgb0002
 e denoting the thickness of the plug (24). Dispositif d'étanchéité selon la revendication 4, caractérisé en ce que n est compris entre 0,5 et 2.Sealing device according to claim 4, characterized in that n is between 0.5 and 2. Procédé pour la mise en oeuvre d'un dispositif d'étanchéité selon l'une des revendications précédentes, caractérisé en ce qu'il comprend les étapes suivantes : - on élabore par emboutissage un bouchon d'étanchéité (24) comportant une collerette (28) raccordée par une partie cylindrique (34) à un fond bombé (26) présentant, côté ouverture, une surface concave ; - on introduit le bouchon (24) dans un alésage (18) d'un pignon (10) de manière à ce que sa collerette (28) soit en butée contre la face frontale (22) dudit pignon ; - on provoque, par l'introduction d'un poinçon dans la partie cylindrique (34) du bouchon (24), un allongement de la longueur dudit bouchon et un redressement du fond bombé (26) qui a pour résultat la formation, à la périphérie dudit fond (26), d'un renflement (38) qui pénètre dans la gorge (20) ; - par retrait du poinçon, on met en pression le renflement (38) contre l'arête (36) de la gorge (20). Method for implementing a sealing device according to one of the preceding claims, characterized in that it comprises the following steps: - A sealing plug (24) is formed by stamping comprising a flange (28) connected by a cylindrical part (34) to a convex bottom. (26) having, on the opening side, a concave surface; - The plug (24) is introduced into a bore (18) of a pinion (10) so that its collar (28) abuts against the front face (22) of said pinion; - It causes, by the introduction of a punch in the cylindrical part (34) of the plug (24), an elongation of the length of said plug and a straightening of the curved bottom (26) which results in the formation, at the periphery of said bottom (26), a bulge (38) which penetrates into the groove (20); - By withdrawal of the punch, the bulge (38) is put under pressure against the edge (36) of the groove (20). Procédé selon la revendication 6, caractérisé en ce que la distance (LG) séparant la face frontale (22) du pignon (10) de l'arête (36) de la gorge (20) est inférieure à la distance (LB) séparant la collerette (28) du bouchon (24) de son fond (26) avant assemblage.Method according to claim 6, characterized in that the distance (LG) separating the front face (22) of the pinion (10) of the edge (36) of the groove (20) is less than the distance (LB) separating the flange (28) of the plug (24) of its bottom (26) before assembly. Procédé selon la revendication 7, caractérisé en ce que les distances (LG) et (LB) satisfont à l'égalité LG = LB - (n x e)
Figure imgb0003
 e désignant l'épaisseur du bouchon (24).Method according to claim 7, characterized in that the distances (LG) and (LB) satisfy equality LG = LB - (nxe)
Figure imgb0003
 e denoting the thickness of the plug (24). Procédé selon la revendication 8, caractérisé en ce que n est compris entre 0,5 et 2.Method according to claim 8, characterized in that n is between 0.5 and 2.
EP19940108535 1993-06-09 1994-06-03 Sealing arrangement of starter drive for internal combustion engine and method for carrying out this arrangement Expired - Lifetime EP0628718B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9306912 1993-06-09
FR9306912A FR2706537B1 (en) 1993-06-09 1993-06-09 Starter launcher sealing device for internal combustion engine and method for implementing such a device.

Publications (2)

Publication Number Publication Date
EP0628718A1 true EP0628718A1 (en) 1994-12-14
EP0628718B1 EP0628718B1 (en) 1996-09-11

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Application Number Title Priority Date Filing Date
EP19940108535 Expired - Lifetime EP0628718B1 (en) 1993-06-09 1994-06-03 Sealing arrangement of starter drive for internal combustion engine and method for carrying out this arrangement

Country Status (5)

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EP (1) EP0628718B1 (en)
BR (1) BR9402124A (en)
DE (1) DE69400508T2 (en)
ES (1) ES2094590T3 (en)
FR (1) FR2706537B1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2760491A1 (en) * 1997-03-07 1998-09-11 Bosch Gmbh Robert FREE CLEARANCE STARTER
WO2012001022A3 (en) * 2010-06-30 2012-02-23 Robert Bosch Gmbh Starting device
CN102782307A (en) * 2010-03-03 2012-11-14 罗伯特·博世有限公司 Starter for an internal combustion engine
FR3019233A1 (en) * 2014-03-28 2015-10-02 Valeo Equip Electr Moteur LAUNCHER WITH OUTGOING GEAR AND STARTER

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030101833A1 (en) * 2001-12-04 2003-06-05 Monroe Donald J. Bearingless pinion with cleaning edges
DE102010030724B4 (en) * 2010-06-30 2019-07-25 Seg Automotive Germany Gmbh Starting device and method for producing a stop for a displaceable pinion of a starting device arranged on a shaft

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2085089A (en) * 1980-09-13 1982-04-21 Honda Motor Co Ltd Starting motor device for an engine
GB2259116A (en) * 1991-08-22 1993-03-03 Bosch Gmbh Robert I.c. engine starter motor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2085089A (en) * 1980-09-13 1982-04-21 Honda Motor Co Ltd Starting motor device for an engine
GB2259116A (en) * 1991-08-22 1993-03-03 Bosch Gmbh Robert I.c. engine starter motor

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2760491A1 (en) * 1997-03-07 1998-09-11 Bosch Gmbh Robert FREE CLEARANCE STARTER
CN102782307A (en) * 2010-03-03 2012-11-14 罗伯特·博世有限公司 Starter for an internal combustion engine
CN102782307B (en) * 2010-03-03 2015-08-26 罗伯特·博世有限公司 For the starter motor of internal-combustion engine
WO2012001022A3 (en) * 2010-06-30 2012-02-23 Robert Bosch Gmbh Starting device
CN103109076A (en) * 2010-06-30 2013-05-15 罗伯特·博世有限公司 Starting device
CN103109076B (en) * 2010-06-30 2016-05-11 罗伯特·博世有限公司 Starting drive
FR3019233A1 (en) * 2014-03-28 2015-10-02 Valeo Equip Electr Moteur LAUNCHER WITH OUTGOING GEAR AND STARTER

Also Published As

Publication number Publication date
ES2094590T3 (en) 1997-01-16
BR9402124A (en) 1995-01-17
DE69400508T2 (en) 1997-01-02
FR2706537B1 (en) 1995-07-28
DE69400508D1 (en) 1996-10-17
EP0628718B1 (en) 1996-09-11
FR2706537A1 (en) 1994-12-23

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