EP1436527A1 - Motor vehicle starter with planetary gearset - Google Patents

Motor vehicle starter with planetary gearset

Info

Publication number
EP1436527A1
EP1436527A1 EP02790498A EP02790498A EP1436527A1 EP 1436527 A1 EP1436527 A1 EP 1436527A1 EP 02790498 A EP02790498 A EP 02790498A EP 02790498 A EP02790498 A EP 02790498A EP 1436527 A1 EP1436527 A1 EP 1436527A1
Authority
EP
European Patent Office
Prior art keywords
crown
reducer
damping
starter
ring
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.)
Withdrawn
Application number
EP02790498A
Other languages
German (de)
French (fr)
Inventor
Olivier Chane-Waye
Zeng Gang Lui
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.)
Valeo Equipements Electriques Moteur SAS
Original Assignee
Valeo Equipements Electriques Moteur 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 Valeo Equipements Electriques Moteur SAS filed Critical Valeo Equipements Electriques Moteur SAS
Publication of EP1436527A1 publication Critical patent/EP1436527A1/en
Withdrawn legal-status Critical Current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
    • F16D3/50—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members
    • F16D3/64—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members comprising elastic elements arranged between substantially-radial walls of both coupling parts
    • F16D3/68—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members comprising elastic elements arranged between substantially-radial walls of both coupling parts the elements being made of rubber or similar material
    • 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
    • F16H—GEARING
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
    • 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
    • F02N15/043—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears the gearing including a speed reducer
    • F02N15/046—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears the gearing including a speed reducer of the planetary type
    • 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
    • F16H—GEARING
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
    • F16H1/2809—Toothed gearings for conveying rotary motion with gears having orbital motion with means for equalising the distribution of load on the planet-wheels
    • F16H1/2818—Toothed gearings for conveying rotary motion with gears having orbital motion with means for equalising the distribution of load on the planet-wheels by allowing limited movement of the ring gear relative to the casing or shaft
    • 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
    • F02N15/006—Assembling or mounting of starting devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/13—Machine starters
    • Y10T74/131—Automatic
    • Y10T74/137—Reduction gearing

Definitions

  • the invention relates to a motor vehicle starter provided with a carcass and a planetary gear reducer, of the type comprising a crown which comprises an outer part mounted fixed in the carcass of the starter and an inner part in the form of a crown mounted coaxially in the external part and carrying an internal toothing meshing with the planet wheels of the reducer, and a shock absorbing device interposed between the external reducer part and the internal crown.
  • a motor vehicle starter of this type is known from patent FR A 2 514 425.
  • the carcass in a known manner serves as a housing for the electric motor of the starter
  • the fixed external part of the reducer is formed by a cylindrical housing and the damping device comprises a plurality of damping blocks interposed between abutment projections provided on the internal face of the housing and abutment ribs provided on the external peripheral surface of the internal crown.
  • shock absorber blocks being separate parts, they must be selectively installed, which complicates the work of assembling the starter and requires significant assembly time.
  • the object of the present invention is to overcome these drawbacks in a simple and economical manner.
  • the starter according to the invention is characterized in that the starter casing has an open end closed by a base plate fixedly mounted in the starter and in that the external part of the crown of the reducer is secured to the base plate.
  • the carcass and the internal crown are simplified.
  • the size of the outer part of the crown is not imposed by the carcass and various shapes can be given to the damping members and to the outer part of the crown.
  • the aforementioned support member is formed by a common central element and in that each damping member has the shape of an L comprising a damping block extending parallel to the axis of the reducer and a radial damping element fixed on the central support.
  • the support member is formed by a ring on which the damper blocks are mounted at an axial end.
  • the outer ring part is formed by a plurality of pins extending axially from the base plate mounted fixed in the starter and distributed angularly equidistantly on a circle coaxial to 1 'axis of the reducer; the crown of damping blocks being interposed between the outer and inner reducer crown portions so that a damping block is inserted between an abutment rib of the inner reducer crown and an outer abutment crown tenon, resting on the outer peripheral face of the inner reducer ring.
  • Figures 2A and 2B illustrate a first embodiment of a crown device of a reduction gear according to the present invention by views respectively in exploded perspective and in the assembled state;
  • Figure 2C is a perspective view of the rear of the inner reducer ring 32 of Figures 2A and 2B;
  • FIG. 3A and 3B illustrate a second embodiment of a crown device of a reducer according to the present invention, by views respectively in exploded perspective and in the assembled state.
  • a known starter 1 comprises an electric motor 2 comprising an armature which drives a shaft 3 carrying, at its free end, a pinion 4.
  • a reduction gear 5 with planetary gear 6 is interposed between the pinion 4 and a shaft launcher 7 coaxial with the output shaft 3 of the electric motor 2, the launcher 8 being movable on the shaft 7 by means of a fork-shaped lever 9 of an electromagnetic contactor 11 disposed in the upper part of the starter.
  • the electric motor 2 and the reduction gear are enclosed in a carcass 12 to which is fixed a front part in the form of a cover 13 on which the casing 14 of the contactor 11 is also mounted.
  • the cover 13 is used to fix the starter 1 on a part fixed of the vehicle.
  • the reduction gear 5 comprises a base plate 16 fixed to the carcass 12 and the casing 14, by screws 17 for fixing the cover 13 to the carcass 12 and the casing 14, and a crown 19 overmolded on the plate 16 in the starter shown .
  • the plate 16 is interposed axially between, on the one hand, the cover and, on the other hand, the casing 14 and the carcass 12.
  • the crown 19 has an internal toothing 20 which meshes with the planet wheels 21 of the planetary gear
  • the satellites are mounted on axes 23 carried by a planet carrier plate 25 integral in rotation with the launcher shaft 7 and immobilized axially in translation by a plate 26 force fitted onto the axes of satellites 23.
  • the invention relates specifically to the production of the reduction gear crown of a base plate starter of the type shown in FIG. 1.
  • the crown is made in two parts, namely an outer part 31, fixedly mounted in the starter casing via the base plate 35, and an inner crown part 32 which is mounted coaxially with respect to the external part 31; a shock absorbing device 34 being interposed between the outer part 31 and the crown member 32.
  • the inner crown 32 is mounted so as to be able to rotate relative to the outer part 31 against the force exerted circumferentially by the damping members 42, 44, 53 that comprises the device 34
  • the upper part 31 is integral with the base plate 35, which therefore constitutes a support plate for this part 31 extending inside the carcass 12 like the crown 19 of Figure 1.
  • the base plate 35 corresponds to the base plate 16 of the starter known in FIG. 1.
  • the plate 35 therefore serves as a support for the casing 14 of the contactor 11. It also serves for fixing the carcass 12 to the cover 13 via the screws 17. This plate can also serve as a support for the articulation support (not referenced in the figure 1) of lever 9.
  • the plate according to a characteristic closes the end open of the carcass 12. This end is adjacent to the cover 13.
  • the outer part 31 consists of a rigid plastic housing. More specifically, the housing is a housing in the form of a cylindrical crown 31 which is overmolded to a base plate 35, here metallic, corresponding to the base plate 16 of the known starter. The housing can also be snapped onto this base plate.
  • the inner ring 32 is made of a rigid material, plastic or metal. Its outer peripheral face 37 carries six abutment ribs 38 which project radially outward and are distributed, angularly equidistant on the periphery.
  • the inner cylindrical surface 39 of the crown housing 31 carries six abutment ribs 40 parallel to the axis of the reduction gear, which protrude radially inwards and are also distributed angularly equidistant.
  • Each rib 40 is extended on the base plate 35 by a radial rib 41.
  • the height of the ribs 38 and 40 and the diameters of the internal cylindrical face 39 of the housing and of the outer peripheral face 37 of the inner ring 32 are dimensioned with so that, in the assembled state, the ribs 38 of the crown 32 come substantially into contact with the inner case face 39 and the ribs 40 with the peripheral face 37 of the inner crown 32.
  • the base plate 35 has a hub-shaped central opening 33 for the passage of the output shaft of the reduction gear and the inner ring 32 is closed at its internal axial end by a wall 59 with the exception of a corresponding central opening 60.
  • the base plate 35 has a series of openings
  • the housing 31 is made of plastic and is fixed by overmolding on the plate 35 so that the plastic overmolding of the outer casing 31 extends through the plate to constitute as many anchoring studs of the casing 31.
  • the openings consist of openings distributed angularly in a regular manner around the opening central plate 33.
  • the lights have a circular arc shape as visible in FIG. 3 of the document FR A 2 725 758 cited above.
  • the anchoring lugs of the housing 31 are solid, while the number of satellites 21 is three. All of these provisions reduce costs.
  • the material extends through the aforementioned slots to form on the other face of the plate 35 an annular retaining disc.
  • the plate has in its upper part a hole for fitting a flange of the body 14 of FIG. 1. Such a hole is also visible in FIG. 3.
  • the damping device 34 comprises twelve damping members of shocks 42 for example made of elastomer, in particular rubber, which each have the shape of an L and are mounted around a common central support member 43, advantageously of the same damping material and advantageously in the form of an annular plate, angularly equidistant from each other.
  • Each L-shaped damping member 42 has a damping block 42 'which extends parallel to the axis of the reducer, and a radial damping element 44 by which the damping member is fixed to the central plate.
  • the damping device thus has the shape of a crown and forms a manipulable and transportable assembly.
  • the damping device 34 is in one piece.
  • the members 42 are attached to the support 43 of annular shape.
  • each damping block 42 ' is wedged in the annular space defined by the two crown parts, between a rib then forming a stop 38 of the internal crown 32 and a stop rib 40 of the housing 31, and each radial rib 41 is inserted between two radial damping elements 44.
  • the internal closure wall 59 of the internal ring 32 carries on its external face radial ribs 63 located circumferentially at the level of the stops 38, extending on the corresponding front face thereof. These ribs 63 are each intended to engage in the radial space 64 formed between two radial damping elements 44, which are located between two radial ribs 41 of the crown housing 31.
  • the ribs 63 have an axial height greater than the axial thickness of the damping elements 44, which makes it possible to create a free space between the internal radial face of the housing and the external face of the elements 44, to allow the deformation of these elements.
  • the damping device 34 makes it possible to reduce torsional shocks and axial shocks.
  • the second embodiment shown in FIGS. 3A and 3B has the particularity that the external part hitherto formed by a housing closed over its entire periphery is formed only by six rigid studs 50 which project perpendicularly from the base plate 35 and are distributed, angularly equidistant on a circle.
  • the pins 50 of axial orientation are molded onto the plate in favor of the aforementioned arcuate lights of the plate 35.
  • the number of lights and pins 50 is here six in so the lights have a smaller size. This number depends on the applications.
  • the internal crown 32 is mounted coaxially with respect to the pins 50 distributed over the same median circumference.
  • This ring 32 carries at its external periphery 37 six relatively narrow external ribs 51 and also distributed angularly equidistant on its periphery.
  • the ribs 51 are radially projecting.
  • the damping device 34 forms a manipulable and transportable assembly as in the previous embodiment and is produced in the form of a crown comprising a ring 52 advantageously of the same damping material on which are arranged six pairs of damping members 53 each in the form of a block.
  • the ring 52 is disposed at an axial end of the blocks.
  • the difference in the peripheral direction of the damper between the blocks of a pair is equal to the width of a groove 51 of the inner ring 32 while the difference between two pairs of blocks is substantially equal to the width d 'a lug 50 of the base plate.
  • the plate 35 also has a single hole of non-circular shape for fixing a plastic articulation support for the lever 9 of FIG. 1. This support is fixed by overmolding to the plate 35; the overmolding material of this support extending through the single hole for anchoring the articulation support.
  • crown configuration of the damping members or blocks has the advantage of reduce the number of parts and simplify assembly while ensuring effective absorption of tangential shocks.
  • the axial length of the tenons 50 is slightly greater than the axial length of the damping blocks 53 in order to obtain a free space allowing the deformation of these blocks and thus putting these blocks able to perform their damping function under the effect of radial loads.
  • the number of damping members 42, 53 of the abutment projections 40, 41, 50 and abutment ribs 38, 51 depends on the applications. In all cases, the members 42, 53 are integral with the plate 43, in the form of a ring, or with the ring 52.
  • the plate of FIGS. 2A and 2C has, as a variant, the single hole for fixing the support of articulation of the lever 9.
  • This variant plate does not serve as a support for the lever 9 and the contactor 11. In all cases it closes the carcass 12 for housing the electric motor 2.
  • the pins 50 are fixed by crimping on the plate 35.
  • Each tenon has, for example, a narrower anchoring lug for forming a shoulder.
  • the tabs pass through the aforementioned openings of the plate 35 and the material of these is folded down in contact with the other face of the plate, for example by hot deformation when the pins 50 are made of plastic or cold when the pins 50 are metallic.
  • the lights are advantageously rectangular in shape with a section complementary to that of the anchoring lugs.
  • the anchoring tabs are welded after crossing the openings.
  • the size of the crown 30 is not imposed by the carcass and depends on the applications.
  • the damping members 42, 44, 53 as well as the support members 43, 52 are made of damping material as mentioned above, for example being based on elastomer or rubber possibly containing fillers.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Retarders (AREA)

Abstract

The invention concerns a motor vehicle starter provided with a frame (12) and a planetary gearset reduction gear comprising a ring gear (3D), including an outer part (31) and an inner ring gear part mounted coaxially in the outer part, and a single-piece shock absorbing device (34) interposed between the outer reduction gear part (31) and the reduction gear inner ring gear (32); the starter frame (12) including one open end closed by a base plate (35) mounted fixedly in the starter and the outer part (30) of the ring gear (30) is integral with the base plate.

Description

Démarreur de véhicule automobile à train épicycloïdal Motor vehicle starter with planetary gear
Domaine L'invention concerne un démarreur de véhicule automobile doté d'une carcasse et d'un réducteur à train épicycloïdal, du type comportant une couronne qui comprend une partie extérieure montée fixe dans la carcasse du démarreur et une partie interne en forme de couronne montée coaxialement dans la partie externe et portant une denture intérieure engrenant les roues satellites du réducteur, et un dispositif d'amortissement de chocs interposé entre la partie de réducteur extérieure et la couronne interne .FIELD The invention relates to a motor vehicle starter provided with a carcass and a planetary gear reducer, of the type comprising a crown which comprises an outer part mounted fixed in the carcass of the starter and an inner part in the form of a crown mounted coaxially in the external part and carrying an internal toothing meshing with the planet wheels of the reducer, and a shock absorbing device interposed between the external reducer part and the internal crown.
Etat de la techniqueState of the art
Un démarreur de véhicule automobile de ce type est connu par le brevet FR A 2 514 425. Dans ce démarreur, la carcasse de manière connue sert de logement au moteur électrique du démarreur, la partie extérieure fixe du réducteur est formée par un boîtier cylindrique et le dispositif amortisseur comporte une pluralité de blocs amortisseurs interposés entre des saillies de butée prévues sur la face interne du boîtier et des nervures de butée prévues sur la surface périphérique extérieure de la couronne interne.A motor vehicle starter of this type is known from patent FR A 2 514 425. In this starter, the carcass in a known manner serves as a housing for the electric motor of the starter, the fixed external part of the reducer is formed by a cylindrical housing and the damping device comprises a plurality of damping blocks interposed between abutment projections provided on the internal face of the housing and abutment ribs provided on the external peripheral surface of the internal crown.
Or, les blocs amortisseurs étant des pièces séparées, ils doivent être mis en place sélectivement, ce qui complique le travail de l'assemblage du démarreur et nécessite un temps d'assemblage important.However, the shock absorber blocks being separate parts, they must be selectively installed, which complicates the work of assembling the starter and requires significant assembly time.
Dans le but de pallier cet inconvénient on a proposé dans le document US A 4 680 979 une solution dans laquelle les blocs amortisseurs sont agencés en une configuration de couronne circulaire coaxiale à 1 ' axe du réducteur sur un organe de support et susceptible d'être placée entre la partie de réducteur extérieure et la couronne de réducteur intérieure . Dans ce document les blocs interviennent entre la carcasse du moteur électrique du démarreur et la couronne interne . Pour ce faire la carcasse est à base d'aluminium pour pouvoir présenter intérieurement des saillies et des évidements. La taille de la couronne intérieure est imposée par la taille de la carcasse. En outre la couronne intérieure a une forme complexe.In order to overcome this drawback, a solution has been proposed in document US A 4 680 979 in which the damping blocks are arranged in a circular crown configuration coaxial with the axis of the reduction gear on a support member and capable of being placed between the outer reducer part and the inner reducer ring. In this document, the blocks intervene between the carcass of the electric motor of the starter and the internal crown. To do this, the carcass is based on aluminum in order to be able to present internal projections and recesses. The size of the inner crown is dictated by the size of the carcass. Besides, the inner crown has a complex shape.
Objet de l'invention La présente invention a pour but de pallier ces inconvénients de manière simple et économique.OBJECT OF THE INVENTION The object of the present invention is to overcome these drawbacks in a simple and economical manner.
Pour atteindre ce but le démarreur selon 1 ' invention est caractérisé en ce que la carcasse du démarreur présente une extrémité ouverte fermée par une plaque de base montée fixe dans le démarreur et en ce que la partie extérieure de la couronne du réducteur est solidaire de la plaque de base.To achieve this aim, the starter according to the invention is characterized in that the starter casing has an open end closed by a base plate fixedly mounted in the starter and in that the external part of the crown of the reducer is secured to the base plate.
Grâce à 1 ' invention on obtient une solution simple et économique et on peut choisir librement la matière de la carcasse car celle-ci n'appartient plus à la couronne du réducteur.Thanks to the invention, a simple and economical solution is obtained and the material of the carcass can be freely chosen since it no longer belongs to the crown of the reducer.
En outre la carcasse et la couronne interne sont simplifiées . De plus la taille de la partie extérieure de la couronne n'est pas imposée par la carcasse et on peut donner diverses formes aux organes amortisseurs et à la partie extérieure de la couronne.In addition, the carcass and the internal crown are simplified. In addition, the size of the outer part of the crown is not imposed by the carcass and various shapes can be given to the damping members and to the outer part of the crown.
Ainsi selon une caractéristique de l'invention, l'organe de support précité est formé par un élément central commun et en ce que chaque organe amortisseur présente la forme d'un L comportant un bloc amortisseur s 'étendant parallèlement à l'axe du réducteur et un élément amortisseur radial fixé sur le support central . Selon une autre caractéristique de l'invention, 1 ' organe de support est formé par un anneau sur lequel sont montés les blocs amortisseurs au niveau d'une extrémité axiale.Thus according to a characteristic of the invention, the aforementioned support member is formed by a common central element and in that each damping member has the shape of an L comprising a damping block extending parallel to the axis of the reducer and a radial damping element fixed on the central support. According to another characteristic of the invention, the support member is formed by a ring on which the damper blocks are mounted at an axial end.
Selon encore une autre caractéristique de l'invention, la partie de couronne extérieure est formée par une pluralité de tenons s ' étendant axialement à partir de la plaque de base montée fixe dans le démarreur et répartis de façon angulairement équidistante sur un cercle coaxial à 1 ' axe du réducteur ; la couronne de blocs amortisseurs étant interposée entre les parties de couronne de réducteur extérieure et intérieure de façon qu'un bloc amortisseur soit inséré entre une nervure de butée de la couronne de réducteur intérieure et un tenon de couronne de butée extérieur, en reposant sur la face périphérique extérieure de la couronne de réducteur intérieure.According to yet another characteristic of the invention, the outer ring part is formed by a plurality of pins extending axially from the base plate mounted fixed in the starter and distributed angularly equidistantly on a circle coaxial to 1 'axis of the reducer; the crown of damping blocks being interposed between the outer and inner reducer crown portions so that a damping block is inserted between an abutment rib of the inner reducer crown and an outer abutment crown tenon, resting on the outer peripheral face of the inner reducer ring.
Brève description des dessinsBrief description of the drawings
L'invention sera mieux comprise, et d'autres buts, caractéristiques, détails et avantages de celle-ci apparaîtront plus clairement dans la description explicative qui va suivre faite en référence aux dessins schématiques annexés donnés uniquement à titre d'exemple illustrant deux modes de réalisation de l'invention et dans lesquels : - la figure 1 est une vue en coupe axiale partielle d'un démarreur du type à réducteur à train épicycloïdal dans l'état de la technique ;The invention will be better understood, and other objects, characteristics, details and advantages thereof will appear more clearly in the explanatory description which follows, made with reference to the appended schematic drawings given solely by way of example illustrating two modes of embodiment of the invention and in which: - Figure 1 is a partial axial sectional view of a starter of the reduction gear type with planetary gear in the prior art;
- les figures 2A et 2B illustrent un premier mode de réalisation d'un dispositif de couronne d'un réducteur selon la présente invention par des vues respectivement en perspectives éclatées et à l'état assemblé ; la figure 2C est une vue en perspective de l'arrière de la couronne de réducteur intérieur 32 des figures 2A et 2B ; et- Figures 2A and 2B illustrate a first embodiment of a crown device of a reduction gear according to the present invention by views respectively in exploded perspective and in the assembled state; Figure 2C is a perspective view of the rear of the inner reducer ring 32 of Figures 2A and 2B; and
- les figures 3A et 3B illustrent un deuxième mode de réalisation d'un dispositif de couronne d'un réducteur selon la présente invention, par des vues respectivement en perspectives éclatées et à l'état assemblé.- Figures 3A and 3B illustrate a second embodiment of a crown device of a reducer according to the present invention, by views respectively in exploded perspective and in the assembled state.
Description d'exemples de réalisation selon l' invention.Description of exemplary embodiments according to the invention.
En se référant à la figure 1 on décrira tout d'abord un démarreur 1 de véhicule automobile équipé d'un réducteur du type à train épicycloïdal, de l'état de la technique, pour démontrer la structure générale d'un tel réducteur.Referring to Figure 1 we will first describe a motor vehicle starter 1 equipped with a reduction gear of the planetary gear type, from the prior art, to demonstrate the general structure of such a reduction gear.
Selon la figure 1, un démarreur connu 1 comporte un moteur électrique 2 comprenant un induit qui entraîne un arbre 3 portant, à son extrémité libre, un pignon 4. Un réducteur 5 à train épicycloïdal 6 est interposé entre le pignon 4 et un arbre de lanceur 7 coaxial à l'arbre de sortie 3 du moteur électrique 2, le lanceur 8 étant dêplaçable sur l'arbre 7 par l'intermédiaire d'un levier 9 en forme de fourche d'un contacteur électromagnétique 11 disposé dans la partie supérieure du démarreur. Le moteur électrique 2 et le réducteur sont enfermés dans une carcasse 12 à laquelle est fixée une partie avant en forme de capot 13 sur laquelle est également monté le carter 14 du contacteur 11. Le capot 13 sert à la fixation du démarreur 1 sur une partie fixe du véhicule .According to FIG. 1, a known starter 1 comprises an electric motor 2 comprising an armature which drives a shaft 3 carrying, at its free end, a pinion 4. A reduction gear 5 with planetary gear 6 is interposed between the pinion 4 and a shaft launcher 7 coaxial with the output shaft 3 of the electric motor 2, the launcher 8 being movable on the shaft 7 by means of a fork-shaped lever 9 of an electromagnetic contactor 11 disposed in the upper part of the starter. The electric motor 2 and the reduction gear are enclosed in a carcass 12 to which is fixed a front part in the form of a cover 13 on which the casing 14 of the contactor 11 is also mounted. The cover 13 is used to fix the starter 1 on a part fixed of the vehicle.
Le réducteur 5 comporte une plaque de base 16 fixée sur la carcasse 12 et le carter 14, par des vis 17 de fixation du capot 13 sur la carcasse 12 et le carter 14, et une couronne 19 surmoulée sur la plaque 16 dans le démarreur représenté. La plaque 16 est intercalée axialement entre, d'une part, le capot et, d'autre part, le carter 14 et la carcasse 12.The reduction gear 5 comprises a base plate 16 fixed to the carcass 12 and the casing 14, by screws 17 for fixing the cover 13 to the carcass 12 and the casing 14, and a crown 19 overmolded on the plate 16 in the starter shown . The plate 16 is interposed axially between, on the one hand, the cover and, on the other hand, the casing 14 and the carcass 12.
La couronne 19 comporte une denture intérieure 20 qu'engrène les roues satellites 21 du train épicycloïdalThe crown 19 has an internal toothing 20 which meshes with the planet wheels 21 of the planetary gear
6. Les satellites sont montés sur des axes 23 portés par un plateau porte-satellites 25 solidaire en rotation de l'arbre de lanceur 7 et immobilisé axialement en translation par une plaque 26 emmanchée à force sur les axes de satellites 23.6. The satellites are mounted on axes 23 carried by a planet carrier plate 25 integral in rotation with the launcher shaft 7 and immobilized axially in translation by a plate 26 force fitted onto the axes of satellites 23.
Une telle disposition à plaque de base montée fixe dans le démarreur est décrite dans le document FR A 2 725 758 (US A 5 718 147) . Pour plus de précisions on se reportera à ce document .Such an arrangement with a base plate fixedly mounted in the starter is described in the document FR A 2 725 758 (US A 5 718 147). For more details, see this document.
L'invention concerne spécifiquement la réalisation de la couronne de réducteur d'un démarreur à plaque de base du type représenté sur la figure 1.The invention relates specifically to the production of the reduction gear crown of a base plate starter of the type shown in FIG. 1.
On décrira ci-après deux modes de réalisation d'une telle couronne désignés par la référence 30 dans les deux modes de réalisation. Ceux-ci ont en commun que la couronne est réalisée en deux parties à savoir une partie extérieure 31, montée fixe dans la carcasse du démarreur via la plaque de base 35, et une partie de couronne intérieur 32 qui est monté coaxialement par rapport à la partie extérieure 31; un dispositif amortisseur de chocs 34 étant interposé entre la partie extérieure 31 et l'organe de couronne 32. La couronne intérieure 32 est montée mobile en rotation par rapport à la partie extérieure 31 à 1 ' encontre de la force exercée circonférentiellement par les organes amortisseurs 42,44, 53 que comporte le dispositif 34 La partie supérieure 31 est solidaire de la plaque de base 35, qui constitue donc une plaque de support de cette partie 31 s ' étendant à l'intérieur de la carcasse 12 comme la couronne 19 de la figure 1.Two embodiments of such a crown will be described below, designated by the reference 30 in the two embodiments. These have in common that the crown is made in two parts, namely an outer part 31, fixedly mounted in the starter casing via the base plate 35, and an inner crown part 32 which is mounted coaxially with respect to the external part 31; a shock absorbing device 34 being interposed between the outer part 31 and the crown member 32. The inner crown 32 is mounted so as to be able to rotate relative to the outer part 31 against the force exerted circumferentially by the damping members 42, 44, 53 that comprises the device 34 The upper part 31 is integral with the base plate 35, which therefore constitutes a support plate for this part 31 extending inside the carcass 12 like the crown 19 of Figure 1.
Avantageusement la plaque de base 35 correspond à la plaque de base 16 du démarreur connu de la figure 1.Advantageously, the base plate 35 corresponds to the base plate 16 of the starter known in FIG. 1.
La plaque 35 sert donc de support au carter 14 du contacteur 11. Elle sert également à la fixation de la carcasse 12 au capot 13 via les vis 17. Cette plaque peut servir également de support au support d'articulation (non référencé à la figure 1) du levier 9. La plaque selon une caractéristique ferme l'extrémité ouverte de la carcasse 12. Cette extrémité est adjacente au capot 13.The plate 35 therefore serves as a support for the casing 14 of the contactor 11. It also serves for fixing the carcass 12 to the cover 13 via the screws 17. This plate can also serve as a support for the articulation support (not referenced in the figure 1) of lever 9. The plate according to a characteristic closes the end open of the carcass 12. This end is adjacent to the cover 13.
Dans le premier mode de réalisation représenté sur les figures 2A et 2B, la partie extérieure 31 consiste en un boîtier rigide en matière plastique. Plus précisément le boîtier est un boîtier en forme de couronne cylindrique 31 qui est surmoulé à une plaque de base 35, ici métallique, correspondant à la plaque de base 16 du démarreur connu. Le boîtier peut également être encliqueté sur cette plaque de base. La couronne intérieure 32 est réalisée en un matériau rigide, en matière plastique ou en métal. Sa face périphérique extérieure 37 porte six nervures de butée 38 qui font radialement saillie vers l'extérieur et sont réparties, de façon angulairement équidistante sur la périphérie. La surface cylindrique intérieure 39 du boîtier de couronne 31 porte six nervures 40 de butée parallèles à l'axe du réducteur, qui font saillie radialement vers 1 ' intérieur et sont également réparties de façon angulairement équidistante. Chaque nervure 40 se prolonge sur la plaque de base 35 par une nervure radiale 41. La hauteur des nervures 38 et 40 et les diamètres de la face cylindrique interne 39 du boîtier et de la face périphérique extérieure 37 de la couronne intérieure 32 sont dimensionnés de façon que, à l'état assemblé, les nervures 38 de la couronne 32 viennent sensiblement en contact, avec la face de boîtier interne 39 et les nervures 40 avec la face périphérique 37 de la couronne intérieure 32. La plaque de base 35 comporte une ouverture centrale en forme de moyeu 33 pour le passage de l'arbre de sortie du réducteur et la couronne intérieure 32 est fermée à son extrémité axiale interne par une paroi 59 à l'exception d'une ouverture centrale 60 correspondante. La plaque de base 35 comporte une série d'ouverturesIn the first embodiment shown in Figures 2A and 2B, the outer part 31 consists of a rigid plastic housing. More specifically, the housing is a housing in the form of a cylindrical crown 31 which is overmolded to a base plate 35, here metallic, corresponding to the base plate 16 of the known starter. The housing can also be snapped onto this base plate. The inner ring 32 is made of a rigid material, plastic or metal. Its outer peripheral face 37 carries six abutment ribs 38 which project radially outward and are distributed, angularly equidistant on the periphery. The inner cylindrical surface 39 of the crown housing 31 carries six abutment ribs 40 parallel to the axis of the reduction gear, which protrude radially inwards and are also distributed angularly equidistant. Each rib 40 is extended on the base plate 35 by a radial rib 41. The height of the ribs 38 and 40 and the diameters of the internal cylindrical face 39 of the housing and of the outer peripheral face 37 of the inner ring 32 are dimensioned with so that, in the assembled state, the ribs 38 of the crown 32 come substantially into contact with the inner case face 39 and the ribs 40 with the peripheral face 37 of the inner crown 32. The base plate 35 has a hub-shaped central opening 33 for the passage of the output shaft of the reduction gear and the inner ring 32 is closed at its internal axial end by a wall 59 with the exception of a corresponding central opening 60. The base plate 35 has a series of openings
(non visibles) . Avantageusement le boîtier 31 est en matière plastique et est fixé par surmoulage sur la plaque 35 en sorte que la matière plastique de surmoulage du boîtier extérieur 31 s'étend à travers la plaque pour constituer autant de tenons d'ancrage du boîtier 31. Ici les ouvertures consistent en des lumières réparties angulairement de manière régulière autour de l'ouverture centrale 33 de la plaque. Les lumières ont une forme en arc de cercle comme visible à la figure3 du document FR A 2 725 758 précité.(not visible). Advantageously, the housing 31 is made of plastic and is fixed by overmolding on the plate 35 so that the plastic overmolding of the outer casing 31 extends through the plate to constitute as many anchoring studs of the casing 31. Here the openings consist of openings distributed angularly in a regular manner around the opening central plate 33. The lights have a circular arc shape as visible in FIG. 3 of the document FR A 2 725 758 cited above.
Quatre lumières sont donc prévues en sorte que les tenons d'ancrage du boîtier 31 sont massifs, tandis que le nombre de satellites 21 est de trois. Toutes ces dispositions permettent de réduire les coûts. Bien entendu lors du surmoulage du boîtier 31 la matière s ' étend à travers des lumières précitées pour constituer sur l'autre face de la plaque 35 un disque annulaire de retenue. Dans ce mode de réalisation la plaque présente dans sa partie supérieure un trou pour emboîtement d'une collerette du corps 14 de la figure 1. Un tel trou est également visible à la figure 3. Le dispositif d'amortissement 34 comporte douze organes amortisseur de chocs 42 par exemple en élastomère, notamment en caoutchouc, qui présentent chacun la forme d'un L et sont montés autour d'un organe de support central commun 43, avantageusement de la même matière amortissante et avantageusement en forme d'une plaque annulaire, de façon angulairement équidistante les uns des autres. Chaque organe amortisseur 42 en forme de L comporte un bloc amortisseur 42' qui s'étend parallèlement à l'axe du réducteur, et un élément amortisseur radial 44 par lequel l'organe amortisseur est fixé à la plaque centrale. Le dispositif amortisseur présente ainsi la forme d'une couronne et forme un ensemble manipulable et transportable. Avantageusement le dispositif amortisseur 34 est d'un seul tenant. En variante les organes 42 sont rapportés sur le support 43 de forme annulaire . Comme le montre les figures, à l'état assemblé, chaque bloc amortisseur 42' se cale dans l'espace annulaire défini par les deux parties de couronne, entre une nervure formant alors butée 38 de la couronne interne 32 et une nervure de butée 40 du boîtier 31, et chaque nervure radiale 41 s'insère entre deux éléments amortisseur radiaux 44.Four lights are therefore provided so that the anchoring lugs of the housing 31 are solid, while the number of satellites 21 is three. All of these provisions reduce costs. Of course during the overmolding of the housing 31 the material extends through the aforementioned slots to form on the other face of the plate 35 an annular retaining disc. In this embodiment, the plate has in its upper part a hole for fitting a flange of the body 14 of FIG. 1. Such a hole is also visible in FIG. 3. The damping device 34 comprises twelve damping members of shocks 42 for example made of elastomer, in particular rubber, which each have the shape of an L and are mounted around a common central support member 43, advantageously of the same damping material and advantageously in the form of an annular plate, angularly equidistant from each other. Each L-shaped damping member 42 has a damping block 42 'which extends parallel to the axis of the reducer, and a radial damping element 44 by which the damping member is fixed to the central plate. The damping device thus has the shape of a crown and forms a manipulable and transportable assembly. Advantageously, the damping device 34 is in one piece. As a variant, the members 42 are attached to the support 43 of annular shape. As shown in the figures, in the assembled state, each damping block 42 'is wedged in the annular space defined by the two crown parts, between a rib then forming a stop 38 of the internal crown 32 and a stop rib 40 of the housing 31, and each radial rib 41 is inserted between two radial damping elements 44.
En se référant à la figure 2C on constate que la paroi de fermeture interne 59 de la couronne interne 32 porte sur sa face extérieure des nervures radiales 63 situées circonfêrentiellement au niveau des butées 38 en se prolongeant sur la face frontale correspondante de celle-ci. Ces nervures 63 sont destinées à s'engager chacune dans l'espace radial 64 formé entre deux éléments amortisseurs radiaux 44, qui se trouvent entre deux nervures radiales 41 du boîtier de couronne 31.Referring to FIG. 2C, it can be seen that the internal closure wall 59 of the internal ring 32 carries on its external face radial ribs 63 located circumferentially at the level of the stops 38, extending on the corresponding front face thereof. These ribs 63 are each intended to engage in the radial space 64 formed between two radial damping elements 44, which are located between two radial ribs 41 of the crown housing 31.
Les nervures 63 ont une hauteur axiale supérieure à l'épaisseur axiale des éléments amortisseurs 44, ce qui permet de créer un espace libre entre la face radiale interne du boîtier et la face externe des éléments 44, pour permettre la déformation de ces éléments .The ribs 63 have an axial height greater than the axial thickness of the damping elements 44, which makes it possible to create a free space between the internal radial face of the housing and the external face of the elements 44, to allow the deformation of these elements.
Grâce à ces caractéristiques constructives, le dispositif amortisseur 34 permet de réduire les chocs de torsion et les chocs axiaux.Thanks to these constructive characteristics, the damping device 34 makes it possible to reduce torsional shocks and axial shocks.
Le deuxième mode de réalisation représenté sur les figures 3A et 3B présente la particularité, que la partie extérieure jusqu'à présent formée par un boîtier fermé sur toute sa périphérie est formé seulement par six tenons rigides 50 qui font saillie perpendiculairement de la plaque de base 35 et sont répartis, de façon angulairement équidistante sur un cercle .The second embodiment shown in FIGS. 3A and 3B has the particularity that the external part hitherto formed by a housing closed over its entire periphery is formed only by six rigid studs 50 which project perpendicularly from the base plate 35 and are distributed, angularly equidistant on a circle.
Plus précisément les tenons 50 d'orientation axiale sont surmoulés sur la plaque à la faveur des lumières en arc de cercle précitées de la plaque 35. Le nombre de lumières et de tenons 50 est ici de six en sorte que les lumières ont une plus petite taille. Ce nombre dépend des applications. La couronne interne 32 est montée coaxialement par rapport aux tenons 50 réparties sur une même circonférence médiane. Cette couronne 32 porte à sa périphérie externe 37 six nervures externes 51 relativement étroites et également réparties de façon angulairement équidistante sur sa périphérie. Les nervures 51 sont radialement saillantes. Le dispositif d'amortissement 34 forme un ensemble manipulable et transportable comme dans le mode de réalisation précédent et est réalisé sous forme d'une couronne comportant un anneau 52 avantageusement de la même matière amortissante sur lequel sont disposées six paires d'organes amortisseurs 53 chacun en forme d'un bloc. L'anneau 52 est disposé au niveau d'une extrémité axiale des blocs. L'écart dans la direction périphérique de l'amortisseur entre les blocs d'une paire est égal à la largeur d'une rainure 51 de la couronne intérieure 32 tandis que l'écart entre deux paires de blocs est sensiblement égal à la largeur d'un tenon 50 de la plaque de base. La figure 3B montre qu'à l'état assemblé, les tenons 50, les nervures 51 et les blocs 53 forment un ensemble dans lequel une paire de blocs amortisseurs 53 se calent angulairement entre deux tenons 50 de la plaque de base et chaque nervure 51 de la couronne interne s ' insère entre les deux blocs 53 de chaque paire de blocs, le centrage de la couronne interne 32 étant accompli par les tenons 50. On notera que la plaque 35 présente également un trou unique de forme non circulaire pour la fixation d'un support d'articulation en matière plastique du levier 9 de la figure 1. Ce support est fixé par surmoulage à la plaque 35 ; la matière de surmoulage de ce support s' étendant à travers du trou unique pour ancrage du support d'articulation.More specifically, the pins 50 of axial orientation are molded onto the plate in favor of the aforementioned arcuate lights of the plate 35. The number of lights and pins 50 is here six in so the lights have a smaller size. This number depends on the applications. The internal crown 32 is mounted coaxially with respect to the pins 50 distributed over the same median circumference. This ring 32 carries at its external periphery 37 six relatively narrow external ribs 51 and also distributed angularly equidistant on its periphery. The ribs 51 are radially projecting. The damping device 34 forms a manipulable and transportable assembly as in the previous embodiment and is produced in the form of a crown comprising a ring 52 advantageously of the same damping material on which are arranged six pairs of damping members 53 each in the form of a block. The ring 52 is disposed at an axial end of the blocks. The difference in the peripheral direction of the damper between the blocks of a pair is equal to the width of a groove 51 of the inner ring 32 while the difference between two pairs of blocks is substantially equal to the width d 'a lug 50 of the base plate. FIG. 3B shows that in the assembled state, the tenons 50, the ribs 51 and the blocks 53 form an assembly in which a pair of damping blocks 53 are angularly wedged between two tenons 50 of the base plate and each rib 51 of the internal crown is inserted between the two blocks 53 of each pair of blocks, the centering of the internal crown 32 being accomplished by the pins 50. It will be noted that the plate 35 also has a single hole of non-circular shape for fixing a plastic articulation support for the lever 9 of FIG. 1. This support is fixed by overmolding to the plate 35; the overmolding material of this support extending through the single hole for anchoring the articulation support.
Il est évident que la configuration en couronne des organes ou blocs amortisseurs présente 1 ' avantage de réduire le nombre de pièces et de simplifier le montage tout en assurant un amortissement efficace de chocs tangentiels .It is obvious that the crown configuration of the damping members or blocks has the advantage of reduce the number of parts and simplify assembly while ensuring effective absorption of tangential shocks.
Il est encore à noter que la longueur axiale des tenons 50 est légèrement supérieure à la longueur axiale des blocs amortisseurs 53 pour obtenir un espace libre permettant la déformation de ces blocs et mettant ainsi ces blocs en mesure d'accomplir leur fonction d'amortissement sous l'effet de charges radiales. Bien entendu le nombre d'organes amortisseurs 42, 53 des saillies de butée 40,41,50 et de nervures de butée 38,51 dépend des applications. Dans tous les cas les organes 42, 53 sont solidaire de la plaque 43, en forme d'anneau, ou de l'anneau 52. Bien entendu la plaque des figures 2A et 2C présente en variante le trou unique de fixation du support d'articulation du levier 9. Cette plaque en variante ne sert pas de support au levier 9 et au contacteur 11. Dans tous les cas elle ferme la carcasse 12 de logement du moteur électrique 2. En variante les tenons 50 sont fixés par sertissage sur la plaque 35. Chaque tenon présente par exemple une patte d'ancrage moins large pour formation d'un épaulement . Les pattes traversent les lumières précitées de la plaque 35 et la matière de celles-ci est rabattue au contact de l'autre face de la plaque par exemple par déformation à chaud lorsque les tenons 50 sont en matière plastique ou à froid lorsque les tenons 50 sont métalliques. Les lumières sont avantageusement de forme rectangulaire de section complémentaire à celle des pattes d'ancrage. En variante les pattes d'ancrage sont soudées après traversée des lumières. Ces types de fixation à pattes épaulées sont envisageables dans le mode de réalisation des figures 2A à 2C ; le boîtier étant en variante métallique. On appréciera que la plaque 35 permet de caler axialement dans un sens la couronne intérieure 32 et que la partie extérieure 31 a une forme plus simple que celle du document US A 4 680 979 précité.It should also be noted that the axial length of the tenons 50 is slightly greater than the axial length of the damping blocks 53 in order to obtain a free space allowing the deformation of these blocks and thus putting these blocks able to perform their damping function under the effect of radial loads. Of course, the number of damping members 42, 53 of the abutment projections 40, 41, 50 and abutment ribs 38, 51 depends on the applications. In all cases, the members 42, 53 are integral with the plate 43, in the form of a ring, or with the ring 52. Of course, the plate of FIGS. 2A and 2C has, as a variant, the single hole for fixing the support of articulation of the lever 9. This variant plate does not serve as a support for the lever 9 and the contactor 11. In all cases it closes the carcass 12 for housing the electric motor 2. As a variant, the pins 50 are fixed by crimping on the plate 35. Each tenon has, for example, a narrower anchoring lug for forming a shoulder. The tabs pass through the aforementioned openings of the plate 35 and the material of these is folded down in contact with the other face of the plate, for example by hot deformation when the pins 50 are made of plastic or cold when the pins 50 are metallic. The lights are advantageously rectangular in shape with a section complementary to that of the anchoring lugs. As a variant, the anchoring tabs are welded after crossing the openings. These types of attachment to shoulder legs are possible in the embodiment of Figures 2A to 2C; the housing being in a metallic variant. It will be appreciated that the plate 35 allows the inner ring 32 to be axially wedged in one direction and that the outer part 31 has a simpler form than that of the document US A 4,680,979 cited above.
La taille de la couronne 30 n'est pas imposée par la carcasse et dépend des applications. Les organes amortisseurs 42, 44, 53 ainsi que les organes de support 43, 52 sont en matière amortissante de manière précitée en étant par exemple à base d'élastomère ou de caoutchouc éventuellement contenant des charges . The size of the crown 30 is not imposed by the carcass and depends on the applications. The damping members 42, 44, 53 as well as the support members 43, 52 are made of damping material as mentioned above, for example being based on elastomer or rubber possibly containing fillers.

Claims

REVENDI CATIONS REVENDI CATIONS
1. Démarreur de véhicule automobile doté d'une carcasse (12) et d'un réducteur (5) à train épicycloïdal (6) comportant des roues satellites (21), une couronne (30) , qui comprend une partie extérieure (31) montée fixe dans la carcasse du démarreur et une partie de couronne interne (32) montée coaxialement dans la partie externe et portant une denture intérieure engrenant les roues satellites du réducteur, et des organes d'amortissement de chocs interposés entre la partie extérieure de la couronne du réducteur et la couronne interne, dans lequel les organes amortisseurs (42, 44 ; 53) sont agencés en une configuration de couronne circulaire coaxiale à l'axe du réducteur sur un organe de support (43 ; 52) susceptible d'être placé entre la partie de réducteur extérieure (31, 50) et la couronne de réducteur intérieure (32), caractérisé en ce que la carcasse (12) du démarreur présente une extrémité ouverte fermée par une plaque de base (35) montée fixe dans le démarreur et en ce que la partie extérieure (30) de la couronne (30) est solidaire de la plaque de base .1. Motor vehicle starter provided with a carcass (12) and a reduction gear (5) with planetary gear (6) comprising satellite wheels (21), a crown (30), which comprises an external part (31) fixed mounted in the starter casing and an internal crown part (32) mounted coaxially in the external part and carrying an internal toothing meshing the planet wheels of the reduction gear, and shock absorbing members interposed between the external part of the crown of the reducer and the internal crown, in which the damping members (42, 44; 53) are arranged in a circular crown configuration coaxial with the axis of the reducer on a support member (43; 52) capable of being placed between the outer reducer part (31, 50) and the inner reducer ring (32), characterized in that the casing (12) of the starter has an open end closed by a base plate (35) mounted fixed in the e starter and in that the outer part (30) of the crown (30) is integral with the base plate.
2. Réducteur selon la revendication 1, caractérisé en ce que l'organe de support des organes amortisseurs est formé par un élément central commun (43) et en ce que chaque organe amortisseur (42) présente la forme d'un L comportant un bloc amortisseur (42) s ' étendant parallèlement à l'axe du réducteur et un élément amortisseur radial (44) fixé sur le support central.2. Reducer according to claim 1, characterized in that the support member of the damping members is formed by a common central element (43) and in that each damping member (42) has the shape of an L comprising a block damper (42) extending parallel to the axis of the reduction gear and a radial damper element (44) fixed on the central support.
3. Réducteur selon la revendication 2, caractérisé en ce que la partie de couronne extérieure est réalisée sous forme d'une couronne (31) formant boîtier cylindrique portant sur sa face périphérique interne (39) des saillies de butée (40) et la face périphérique externe (37) de la couronne de réducteur intérieur (32) porte des nervures radiales (38) , chaque bloc amortisseur (42) étant inséré entre les faces radiales en regard d'une saillie de butée (40) du boîtier et d'une nervure radiale (38) de la couronne de réducteur intérieur (32) . 3. Reducer according to claim 2, characterized in that the outer crown part is produced in the form of a crown (31) forming a cylindrical housing bearing on its internal peripheral face (39) abutment projections (40) and the face external device (37) of the inner reduction gear ring (32) carries radial ribs (38), each block shock absorber (42) being inserted between the radial faces opposite a stop projection (40) of the housing and a radial rib (38) of the inner reducer ring (32).
4. Réducteur selon la revendication 3, caractérisé en ce qu'un espace libre permettant la déformation des éléments amortisseurs radiaux (44) est prévu dans la couronne de réducteur extérieur (31) .4. Reducer according to claim 3, characterized in that a free space allowing the deformation of the radial damping elements (44) is provided in the outer reducer ring (31).
5. Réducteur selon la revendication 1, caractérisé en ce que la partie de couronne extérieure est formée par une pluralité de tenons (50) s ' étendant axialement à partir de la plaque de base (35) montée fixe dans le démarreur et répartis de façon angulairement équidistante sur un cercle coaxial à l'axe du réducteur, et dont les faces latérales constituent les faces de butée latérales du bloc amortisseur (53) .5. Reducer according to claim 1, characterized in that the outer ring part is formed by a plurality of pins (50) extending axially from the base plate (35) fixedly mounted in the starter and distributed so angularly equidistant on a circle coaxial with the axis of the reducer, and whose lateral faces constitute the lateral abutment faces of the damping block (53).
6. Réducteur selon la revendication 5, caractérisé en ce que l'organe de support des organes amortisseurs est formé par un anneau (52) sur lequel sont montés les blocs amortisseurs à une extrémité axiale.6. Reducer according to claim 5, characterized in that the support member of the damping members is formed by a ring (52) on which are mounted the damping blocks at an axial end.
7. Réducteur selon la revendication 6, caractérisé en ce que la longueur axiale des tenons (50) est légèrement supérieure à la longueur axiale des blocs amortisseurs (53) pour créer un espace libre permettant la déformation élastique de ces derniers. 7. Reducer according to claim 6, characterized in that the axial length of the pins (50) is slightly greater than the axial length of the damping blocks (53) to create a free space allowing the elastic deformation of the latter.
EP02790498A 2001-09-14 2002-09-16 Motor vehicle starter with planetary gearset Withdrawn EP1436527A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0111924A FR2829812B1 (en) 2001-09-14 2001-09-14 GEARBOX WITH EPICYCLOIDAL TRAIN IN PARTICULAR FOR A MOTOR VEHICLE STARTER AND STARTER EQUIPPED WITH SUCH A REDUCER
FR0111924 2001-09-14
PCT/FR2002/003139 WO2003025425A1 (en) 2001-09-14 2002-09-16 Motor vehicle starter with planetary gearset

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EP1436527A1 true EP1436527A1 (en) 2004-07-14

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US (1) US20110094333A1 (en)
EP (1) EP1436527A1 (en)
KR (1) KR20040044923A (en)
FR (1) FR2829812B1 (en)
WO (1) WO2003025425A1 (en)

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US20120125149A1 (en) * 2010-11-19 2012-05-24 Remy Technologies, L.L.C. Motor starter including an armature having an integral drive system
HUE048074T2 (en) * 2012-06-21 2020-05-28 Seg Automotive Germany Gmbh Starting device for starting combustion engines
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US9856966B2 (en) * 2014-08-27 2018-01-02 General Electric Company Drivetrain assembly for a wind turbine
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WO2003025425A1 (en) 2003-03-27
US20110094333A1 (en) 2011-04-28
KR20040044923A (en) 2004-05-31
FR2829812B1 (en) 2003-12-19
FR2829812A1 (en) 2003-03-21

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