EP1687526B1 - Internal combustion engine starter comprising a cylinder head and speed reducer centring means on the case - Google Patents

Internal combustion engine starter comprising a cylinder head and speed reducer centring means on the case Download PDF

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Publication number
EP1687526B1
EP1687526B1 EP04805585A EP04805585A EP1687526B1 EP 1687526 B1 EP1687526 B1 EP 1687526B1 EP 04805585 A EP04805585 A EP 04805585A EP 04805585 A EP04805585 A EP 04805585A EP 1687526 B1 EP1687526 B1 EP 1687526B1
Authority
EP
European Patent Office
Prior art keywords
starter
support
housing
ring gear
control lever
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.)
Not-in-force
Application number
EP04805585A
Other languages
German (de)
French (fr)
Other versions
EP1687526A1 (en
Inventor
Laurent-Yves Grand
Thierry Paltrie
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
Priority claimed from FR0314009A external-priority patent/FR2863015B1/en
Priority claimed from FR0314010A external-priority patent/FR2863016B1/en
Priority claimed from FR0314011A external-priority patent/FR2863017B1/en
Application filed by Valeo Equipements Electriques Moteur SAS filed Critical Valeo Equipements Electriques Moteur SAS
Priority to PL04805585T priority Critical patent/PL1687526T3/en
Publication of EP1687526A1 publication Critical patent/EP1687526A1/en
Application granted granted Critical
Publication of EP1687526B1 publication Critical patent/EP1687526B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • 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
    • F02N15/067—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 the starter comprising an electro-magnetically actuated lever
    • 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
    • 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

Definitions

  • the document FR-A-2767157 discloses a motor vehicle internal combustion engine starter of the kind mentioned, in which the axial setting of the fixed ring of the speed reducer on the starter support is made by contact of a wall of the ring on a rim of the support.
  • the yoke of the inductor bears against the end of the support which is axially separated from the rim of the support by a predetermined distance.
  • the centering of the support and the breech is made along the entire length of the annular skirt of the crown.
  • Such an arrangement requires precise machining of the support, especially at the rim and end separated from each other by the aforementioned distance. The tolerance range of this dimension is added to the dimension strings of the device.
  • the object of the invention is to provide a starter that overcomes the aforementioned drawbacks, so as to achieve a centering and precise positioning of the gearbox crown, while simplifying the operations of machining the support, and reducing the chains starter ratings.
  • the starter according to the invention is characterized in that the ring gear of the reducer comprises a first bearing face located in the same plane as the connecting interface between the support and the cylinder head.
  • the connection interface is delimited between a second bearing surface of the support in axial abutment against a third bearing surface of the cylinder head.
  • the machining of the support is simplified because only the second support face of the support must be machined.
  • the ring comprises a flange equipped with the first bearing face coming into contact with the support.
  • the flange protrudes from the skirt of the crown to ensure the centering of the yoke and the crown on the support.
  • the ring gear of the gearbox is locked in axial translation by said collar, and by a stop boss of the cylinder head.
  • the starter can be further simplified.
  • the ring gear of the gearbox in one embodiment advantageously comprises an extension shaped to provide a function of articulation of the control lever.
  • the ring gear of the gearbox in one embodiment advantageously comprises an extension shaped to provide a function of articulation of the control lever.
  • a pad of flexible material is preferably interposed between the extension of the ring and a bearing surface of the contactor tank.
  • the presence of the stud avoids the machining of this part of the contactor.
  • the extension of the crown is provided with support means, such as one or two tongues, constituting a bearing at the rear part of the articulation of the lever, the front part of said articulation being realized by a housing on the starter support.
  • support means such as one or two tongues, constituting a bearing at the rear part of the articulation of the lever, the front part of said articulation being realized by a housing on the starter support.
  • the extension for the articulation of the lever is formed by a piece secured to the ring by fastening means known per se.
  • the extension can provide an additional function.
  • the ring gear of the gearbox comprises an extension shaped as a male stop element engaged in a cavity of the support receiving the control lever.
  • the extension of the crown adapts to the width of the cavity, which constitutes a female element for positioning and guiding the control lever.
  • the design of the starter bracket is simplified compared to that of the document FR2787833 because it does not require ribs or specific shapes for stopping rotation of the crown.
  • the control lever housing cavity automatically performs this stop function when inserting the crown extension.
  • the extension of the crown comprises an articulation clevis of the control lever or one or two tongues.
  • the crown is also simplified, because the yoke or the hinge or tongues of the control lever simultaneously ensures the rotational stop of the crown.
  • a pad of flexible material is in the aforementioned manner interposed between the extension of the ring and a contact surface of the contactor.
  • thermoplastic crown The risk of molding deformation of the thermoplastic crown is limited, and the absence of ribs or other forms in relief inside the starter support, frees up the volume available to house more bulky components, for example a thrower of larger diameter.
  • the extension may come from molding with the crown, or be formed by a piece secured to the ring by fixing means.
  • the starter 10 comprises an electric motor 11 composed of a stator 12 and a rotor 13 mounted coaxially, the stator 12 surrounding the rotor 13, which is rotatably mounted about an axis 14 inside a cylinder head 15.
  • the latter is secured to the metal support of the starter for attachment to a fixed part of the motor vehicle.
  • the support 16 is here made of moldable material, for example based on aluminum.
  • the stator 12 comprises, for example, an inductor coil 17 comprising two pairs of windings 18, which are each wound around a polar mass 19 integral with the cylinder head 15.
  • the polar masses 19 are fixed by means of screws 20 to the cylinder head 15, here metallic, as described in the document FR-A-2,611,096 ( figure 1 ).
  • Each winding 18 is composed of a continuous conductor wound around the polar mass 19 in the direction of its thickness so as to form concentric contiguous turns of increasing diameter as better visible in the Figures 2 to 5 of the document EP A 749 194 .
  • the axis of each winding 18 is radial relative to the axis 14 of the rotor 13, which constitutes the axis of rotation of the electric motor 11.
  • the rotor 13 comprises a bundle of plates provided with grooves for mounting electrical conductors 21 in the form of pins. These conductors 21 are interconnected to form a rotor winding in connection with the conductive blades 22 belonging to a collector 23 integral with the shaft 24 of the electric motor 11. As a variant, the winding is in continuous wire.
  • the brushes 25 rub on the collector slats 22 of the manifold 23 to supply the rotor winding.
  • the brushes 25 belong to a brush holder 26 equipped with guiding cages and receiving brushes, which are biased towards the slats 22 by means of springs 27.
  • the brush holder 26 is integral with a rear bearing 28 having in the central portion a housing for mounting a needle bearing 29.
  • the bearing 28 serves for rotatably mounting the rear end of the shaft 24 of the electric motor 11.
  • the axis of this shaft 24 coincides with the 14 of the rotor 13, and with the axis of the output shaft 43, constituting the starter shaft 30.
  • the rear bearing 29 serves as a centering device at the rear end of the cylinder head 15, and is connected by tie rods 31 at support 16 of the starter 10. It can be seen at figure 8 two threaded holes (not referenced) in the support for screwing the tie rods. These holes are diametrically opposed and are each made with the aid of a radially and axially projecting lug that the support at the rear (see also figures 1 and 10 ).
  • the tie rods 31 are located outside the cylinder head 15. Here a small clearance exists between the tie rods and the outer periphery of the cylinder-shaped cylinder head 15.
  • the support has two large ribbed ears, each ear having a hole for the passage of a fastener, such as a screw or a bolt, the support to a fixed part, such as the housing of the internal combustion engine.
  • a fastener such as a screw or a bolt
  • One of the ears has an extra hole.
  • the holes are tapped.
  • the starter 10 also comprises an electromagnetic contactor 32 extending parallel to the electric motor 11 by being radially implanted above it.
  • the contactor 32 has a tank 33 carried by the support 16, and equipped with an excitation coil B provided with at least one winding.
  • the tank 33 is closed at the front by a cover 34 made of electrically insulating material.
  • the fixing of the cover 34 is made by folding the material of the free end of the tank 33.
  • a shoulder of the tank 33 ensures the axial setting of a fixed core 35, which is wedged axially in the other direction by the cover 34 carrying terminals 36, 37 of power supply.
  • the terminals 36, 37 are shaped to each form a fixed contact 38 inside the cover 34.
  • One of the terminals 36 is intended to be connected to the positive terminal of the battery, the other 37 is connected by the intermediate of a cable 39 at the input of the inductor winding 17 of the stator and brushes 25 of positive polarity.
  • a mobile core 40 is attracted by magnetic attraction towards the fixed core 35 to simultaneously cause the closing of the contacts of the contactor 32, and the actuation of a control lever 41 of the launcher 30 .
  • the output shaft 43 is mounted in a bearing 42 before the support 16, constituted for example by a needle bearing.
  • the rear end of the output shaft 43 has, as described in the document FR-A-2787833 , a recess for the arrangement of a sliding bearing 44 for rotatably mounting the front end of the shaft 24 of the electric motor 11.
  • This front end is configured to form a sun gear 49 belonging to a planetary gear train constituting a gear reducer 45 which is interposed between the output shaft 43 and the shaft 24 of the electric motor 11.
  • the speed reducer 45 comprises a cylindrical ring 46 immobilized in rotation and having an annular skirt 61 toothed internally ( figures 1 , 2 , 6 , 10 ).
  • the skirt 61 is axially oriented and therefore has a cylindrical shape.
  • the teeth 48 of the skirt 61 of the ring 46 have an axial orientation, and mesh with planet gears 47 mounted to rotate about axes carried by a transverse plate secured to the rear end of the shaft 43 of the launcher 30.
  • the ring 46 is a molded part.
  • the ring 46 is moldable plastic material, preferably rigid thermoplastic material, advantageously reinforced by fibers.
  • the launcher 30 is slidably mounted on the output shaft 43, and comprises a drive gear 50, a driver 51 actuated by the control lever 41 pivoting, and a free wheel 52 interposed axially between the driver 51 and the pinion 50.
  • the support 16 of hollow form, comprises housings for the launcher 30 and for the lever 41 as better visible in the figures 1 and 8 to 10 .
  • the driver 51 is internally provided with helical splines in complementary engagement with external helical teeth carried by the output shaft 43.
  • the launcher 30 is thus driven by a helical movement when it is moved by the lever 41 against the stop 53 to come, via its pinion 50, engaged with the starter ring of a internal combustion engine (not shown) by means of a notch made in the ogival-shaped front part of the hollow support 16 ( figures 1 , 9 and 10 ).
  • the freewheel device 52 can be replaced by a conical clutch coupling device, of the type described in the document FR-A-2772433 .
  • the launcher 30 variant is implanted partly outside the support at the front thereof.
  • the pinion 50 of the launcher 30 instead of being implanted in the support ( figures 1 and 10 ), can be implanted outside the support as visible for example in the document FR A 2,745,855 to which we will refer.
  • the internal combustion engine can be stationary or belong to a motor vehicle, such as a passenger vehicle or a boat.
  • the control lever 41 is coupled by its upper end to the movable core 40 of the contactor 32, and comprises in its middle part a pivot axis 54, which according to one characteristic, can be integrated partially or completely in an extension of the toothed crown 46 fixed gear reducer 45 gear.
  • the lever 41 is a molded part, preferably a rigid thermoplastic material, preferably reinforced with fibers.
  • the support comprises a first housing for particularly the lower part of the lever 41 and the front portion of the ring 46 and a second reduced-size housing for mounting the pivot axis 54 and the upper part of the lever.
  • first housing for particularly the lower part of the lever 41 and the front portion of the ring 46
  • second reduced-size housing for mounting the pivot axis 54 and the upper part of the lever.
  • the contour of the second housing comprises an annular shoulder for supporting the front portion to the tank 33 of cylindrical shape.
  • the first housing is delimited at the rear by an annular contour for housing the front portion of the ring 46.
  • the contour of the second housing extends in axial projection relative to the contour of the first housing ( figure 9 ).
  • a radial passage 170 is formed between the two housings ( figure 8 ). This passage comprises a cavity 69 described below
  • the extension of the ring gear 46 of the gearbox 45 consists of one or two flat tabs 55 each comprising a semi-cylindrical bearing 56 intended to receive the pivot axis 54.
  • the tongue or tabs 55 are implanted at the outer periphery of the ring 46 and here are integrally molded with the ring 46.
  • This or these tabs 55 are of transverse orientation with respect to the axis 14 and are directed towards the electromagnetic contactor 32.
  • This or these bearings 56 constitute support means of the lever 41 to the rear part of the joint, while the front part of the joint is formed by a bearing-shaped housing on the support 16.
  • a sealing pad 58 made of elastomer capable of absorbing dimensional variations.
  • the semi-cylindrical bearing 56 is molded with the tongues 55 extending the ring 46, and the pivot axis 54 is molded with the control lever 41.
  • FIGS. 2 to 7 show other embodiments in which the pivot axis 54 of the lever 41 is totally integrated in the ring 46 of the gearbox 45.
  • the control lever 41 comprises hinge housings 59 at the upper part for connection with the movable core 40, and a fork 60 at the lower part intended to engage in the driver 51.
  • the annular skirt 61 to teeth 48 internal and axial orientation of the ring 46 is connected to a radial flange 62, which is pierced at its center with a hole 63 coaxially traversed by the output shaft 43.
  • the flange 62 transversely oriented relative to the axis 14, constitutes the bottom of the ring 46.
  • This flange 62 belonging to the front portion of the ring 46, preferably comprises dorsally radial ribs (not referenced to the figure 3 ) for its stiffening.
  • the ring 46 of the gearbox 45 is provided with a yoke 64 enabling the pivot pin 54 to be inserted for the articulation of the lever 41.
  • the yoke 64 replaces the tongues 55 and advantageously molds with the ring 46, while that the pivot axis 54 is an insert passing through a hole of the lever 41 to be housed in aligned orifices 65 of the yoke 64, which extends transversely to the outer periphery of the ring 46 and in the direction of the contactor the figure 1 .
  • the yoke 64 of the ring 46 is formed by two tabs 64a, 64b elastic provided with two orifices 65 aligned.
  • the pivot axis 54 is molded with the lever 41, and can be introduced into the orifices 65 after transverse spacing of the tabs 64a, 64b.
  • the two tabs 64a, 64b elastic of the yoke 64 are each provided with a pin 66 which is clipped into an annular groove 67 of the control lever 41 to form the hinge of the latter on the ring 46.
  • the yoke 64 provided on the extension of the toothed crown 46 comprises a U-shaped cradle 68 in which the pivot axis 54 is engaged.
  • the pivot axis 54 can be integrated into the lever of FIG. 41, in particular by molding, or be reported transversely in an orifice of the lever 41.
  • the clevis 64 housing the pivot axis 54 may be constituted by a piece fixed on the ring gear 46, instead of coming directly from molding with the gearbox crown, as in the examples of the Figures 2 to 7 .
  • the hinge piece can be mechanically secured to the ring by any method of attachment, including welding, gluing, clipping, crimping, sliding in a T-slot or dovetail.
  • the rotational locking of the ring gear 46 is advantageously achieved by the yoke 64 which is housed in a cavity 69 of complementary shape provided in the aforementioned manner in the support 16.
  • the yoke 64 simultaneously constitutes a male stopping element, which is dimensioned to fit the width of the cavity 69.
  • the latter already arranged for the positioning and guiding of the control lever 41, constitutes a female element of FIG. retaining the yoke 64 for the immobilization in rotation of the ring 46 of the gearbox 45.
  • This cavity 69 is delimited, on the one hand, by a bottom in two parts, referenced in dotted line at 369 to the figure 8 , for support of the yoke 64 and secondly, by two lateral edges 169.
  • the lateral edges are connected to axial edges (not referenced) offset transversely. This is done by molding.
  • the tongue or tabs ( Figures 1 and 11 ) constitute the male stopping element.
  • the extension of the ring constituting a male stop engaged in a cavity 69 of the support 16 receiving the control lever, is shaped to provide a stop function in rotation of the ring.
  • This extension is also shaped to provide a function of articulation of the control lever 41.
  • the stud 58 is interposed between a bearing face 57 of the tank 33 of the contactor 32 and the extension.
  • This pad is configured at its inner periphery to cooperate with the outer periphery of the yoke 15, which is thus devoid of indentation at this level and has a simple shape.
  • the starter support 16 is thus simplified compared to that of the documents FR-A-2787833 and FR-A-2767157 because it does not require ribs or specific grooves for the rotational stop of the ring gear 46.
  • the yoke 64 has in the example of Figures 8 and 9 , a double function of articulation of the lever 41 and rotational stop of the ring 46, which also simplifies the manufacture of the latter. The risk of molding deformation of the crown 46 thermoplastic are thus limited.
  • the figure 10 shows the device for positioning the ring 46 of the gearbox 45 relative to the support 16 of the starter and the cylinder head 15 of the electric motor 11.
  • the ring 46 has at its projecting outer periphery a collar 73 having a first bearing surface 70 located in the same plane as the second bearing face 71 of the starter support 16, and the third bearing face 72 of the yoke 15 of the inductor. More precisely, the flange 73, here of radial orientation and of annular shape, is axially offset with respect to the bottom 62 as better visible in the figures 2 , and 6 .
  • the second bearing face 71 of the support is formed at the free end of the support 16, here metallic, that is to say at the rear end of the support 16.
  • the third bearing surface of the yoke 15, here metallic, is constituted by the free end of the yoke 15 adjacent to the second bearing face 71.
  • the bearing faces 70 to 72 extend transversely with respect to the axis 14.
  • the centering of the toothed crown 46 in the support 16 is provided by the first bearing face 70 of the collar 73.
  • the centering of the cylinder head 15 on the ring 46 is effected on the outside diameter of the collar 73.
  • the third bearing face 72 of the yoke 15 is in contact with the second bearing face 71 of the support 16, which permanently guarantees the electrical continuity between the yoke and the support.
  • the flange 73 is extended towards the rear, in the direction opposite to the lever 41, by a network of ribs 402 of axial orientation of different length. These ribs, distributed circumferentially, reinforce the skirt 61. It can be seen at figure 2 that the outer periphery of the front portion of the skirt 61, extending between the flange 62 and the bearing face 70 of the flange 73, has pointed projections 400. Similarly, in 401, pointed projections are seen which extend to the outer periphery ribs 402 as best visible at the figure 8 . Thus it is easy to clamp the front section into the first housing of the support and the same is mounted by force the yoke on the ribs 402.
  • the flange 73 of centering and positioning of the ring 46 simplifies the machining operations, and reduce the starter rating chains. Only the second bearing face 71 of the support 16 must be machined.
  • the tongues 55 and the tabs 64a, 64b of the yoke 64 form between them a space for the passage of the control lever 41, here plastic.
  • the tabs 55 correspond to the tabs 64a, 64b of the yoke 64 with only one bearing 56.
  • the lever 41 is connected to the movable core 40 via a rod hitched elastically to the movable core 40 as visible partially to the figure 1 , and better visible at the figure 2 of the document FR-A-2787833 .
  • the fork 60 has at its lower end two fingers penetrating into a groove in the driver 51, one of the sides of the groove being formed by a washer mounted snap on the trainer as described in the document FR-A-2687736 .
  • the cylindrical cylinder head 15 like the tank 33, has a simplified structure thanks to the invention, since the ring 46 has an extension, here having a generally transverse orientation. This extension extends substantially in the extension of the flange 62 of the ring 46 of hollow form, serving as housing the speed reducer epicyclic train.
  • the spindle 54 is molded with the lever 14 and is provided in the aforementioned manner, as visible in FIG. figure 11 , a single tongue 55 of transverse orientation directed towards the contactor and having at its outer periphery a receiving recess 155 of the pivot axis 54 of cylindrical shape.
  • the tongue 155 is therefore of reduced thickness at its recess 155 generally of rectangular shape and opening to the outer periphery of the tongue 55 generally of rectangular shape.
  • the bottom 159 of the recess 155 constitutes a shoulder for the axis 54 and advantageously has a rounded profile.
  • This axis 54 is here of the type of that visible at the figure 4 and therefore comprises two cylindrical studs or trunnions extending on either side of the body of the lever 41.
  • figure 11 in dotted lines as the pins of the axis 54.
  • these pads are each delimited by a plane face of transverse orientation unlike the pins of the axis 54 of the figure 4 , which are delimited by an inclined face for spacing the legs of the figure 4 .
  • the width of the recess 155, made in the rear face of the tongue 55 facing the support 16, is greater than the length of the axis 54.
  • the height of this hollow is greater than the diameter of the axis 54.
  • the recess 155 centrally has a thickness reduction 156, which thus delimits two spans 157 extending on either side of the reduction of thickness 156. These spans 157 are spans for the studs of the pivot axis 54.
  • the thickness reduction 156 avoids interference with the body of the lever 41.
  • the rounded profile of the bottom 159 is dimensioned according to the diameter of the pads of the axis 54.
  • the bottom 59 forms in connection with the seats 157 a cradle for the axis of the lever 41 and therefore a bearing surface therefor.
  • the width of this tongue 55 is dimensioned according to the cavity 69 of the figure 8 .
  • the lateral edges 210 of the tongue 55 are adapted to cooperate in a complementary manner with the lateral edges 169 ( figure 8 ) delimiting the cavity 69 for locking or immobilization in rotation of the ring 46.
  • the tongue 55 has been rigidified centrally.
  • there are two ribs 158 extending on either side of a rib 160 of the type visible in FIG. figure 3 .
  • a central opening 210 centrally affecting the bottom 159 at the thickness reduction 156 of the recess 155.
  • the ribs 158 define the lateral edges of the opening 210 of rectangular shape.
  • the central rib 160 opens into the longitudinal bottom of the opening 210.
  • the ring gear 46 more precisely the flange 62, has a salient pin referenced 300 in the Figures 2 and 3 .
  • This lug extending diametrically opposite by relative to the yoke 64, or alternatively to the tongue or tabs 55 replacing the yoke 64.
  • This yoke is received in a complementary manner in a cavity 269 of the support 16 and thus participates in the rotational grooving of the ring 46 in association with the extension of the ring-shaped crown 64 or at least one tongue 55.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Electrical Control Of Ignition Timing (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)
  • Valve Device For Special Equipments (AREA)
  • Means For Warming Up And Starting Carburetors (AREA)

Abstract

The invention relates to a starter comprising an electric engine ( 11 ) which is connected to a starter drive assembly ( 30 ) with a planetary gear speed reducer ( 45 ) inserted therebetween. According to the invention, the reducer is housed inside a fixed ring gear ( 46 ) which comprises a centering ( 73 ) having a first support face ( 70 ) which is located in the same plane as the connection interface between the support ( 16 ) and the cylinder head ( 15 ). The invention is suitable for a motor vehicle starter.

Description

Domaine technique de l'inventionTechnical field of the invention

L'invention est relative à un démarreur de moteur à combustion interne, notamment de moteur à combustion interne de véhicule automobile, comportant un moteur électrique ayant une culasse cylindrique de support du stator, et un rotor accouplé à un arbre de sortie pour l'entraînement en rotation d'un lanceur avec interposition d'un réducteur de vitesse à train épicycloïdal, ledit réducteur comprenant :

  • une couronne ayant une jupe annulaire cylindrique dentée intérieurement, et un flasque radial doté d'un trou pour le passage coaxial de l'arbre de sortie,
  • et des moyens de centrage axial de ladite couronne dans le support du démarreur.
The invention relates to an internal combustion engine starter, in particular an internal combustion engine of a motor vehicle, comprising an electric motor having a cylindrical stator support yoke, and a rotor coupled to an output shaft for driving. in rotation of a launcher with the interposition of an epicyclic gear reducer, said gear comprising:
  • a ring having a cylindrical annular skirt internally toothed, and a radial flange having a hole for the coaxial passage of the output shaft,
  • and axial centering means of said ring in the starter support.

Etat de la techniqueState of the art

Le document FR-A-2767157 décrit un démarreur de moteur à combustion interne de véhicule automobile du genre mentionné, dans lequel le calage axial de la couronne fixe du réducteur de vitesse sur le support de démarreur est réalisé par contact d'une paroi de la couronne sur un rebord du support. La culasse de l'inducteur prend appui contre l'extrémité du support qui est séparée axialement du rebord du support par une distance prédéterminée. Le centrage du support et de la culasse se fait sur toute la longueur de la jupe annulaire de la couronne. Un tel agencement impose un usinage précis du support, notamment au niveau du rebord et de l'extrémité séparés l'un de l'autre par la distance précitée. L'intervalle de tolérance de cette cote vient s'ajouter dans les chaînes de cotes de l'appareil.The document FR-A-2767157 discloses a motor vehicle internal combustion engine starter of the kind mentioned, in which the axial setting of the fixed ring of the speed reducer on the starter support is made by contact of a wall of the ring on a rim of the support. The yoke of the inductor bears against the end of the support which is axially separated from the rim of the support by a predetermined distance. The centering of the support and the breech is made along the entire length of the annular skirt of the crown. Such an arrangement requires precise machining of the support, especially at the rim and end separated from each other by the aforementioned distance. The tolerance range of this dimension is added to the dimension strings of the device.

Objet de l'inventionObject of the invention

L'objet de l'invention consiste à réaliser un démarreur qui remédie aux inconvénients précités, de manière à obtenir un centrage et un positionnement précis de la couronne du réducteur, tout en simplifiant les opérations d'usinage du support, et en réduisant les chaînes de cotes du démarreur.The object of the invention is to provide a starter that overcomes the aforementioned drawbacks, so as to achieve a centering and precise positioning of the gearbox crown, while simplifying the operations of machining the support, and reducing the chains starter ratings.

Le démarreur selon l'invention est caractérisé en ce que la couronne du réducteur comporte une première face d'appui située dans le même plan que l'interface de liaison entre le support et la culasse. L'interface de liaison est délimitée entre une deuxième face d'appui du support en aboutement axial contre une troisième face d'appui de la culasse. L'usinage du support est simplifié, car seule la deuxième face d'appui du support doit être usinée.The starter according to the invention is characterized in that the ring gear of the reducer comprises a first bearing face located in the same plane as the connecting interface between the support and the cylinder head. The connection interface is delimited between a second bearing surface of the support in axial abutment against a third bearing surface of the cylinder head. The machining of the support is simplified because only the second support face of the support must be machined.

Selon un mode de réalisation préférentiel, la couronne comporte une collerette équipée de la première face d'appui venant en contact avec le support. La collerette fait saillie de la jupe de la couronne pour assurer le centrage de la culasse et de la couronne sur le support. La couronne du réducteur est bloquée en translation axiale par ladite collerette, et par un bossage d'arrêt de la culasse.According to a preferred embodiment, the ring comprises a flange equipped with the first bearing face coming into contact with the support. The flange protrudes from the skirt of the crown to ensure the centering of the yoke and the crown on the support. The ring gear of the gearbox is locked in axial translation by said collar, and by a stop boss of the cylinder head.

Grâce à l'invention on obtient une bonne continuité électrique entre la culasse et le support du démarreur.Thanks to the invention we obtain a good electrical continuity between the yoke and the starter support.

Par rapport aux solutions décrites dans les documents US A 4 649 285 et US A 5 718 147 on supprime la plaque de base et la culasse est simplifiée puisque grâce à l'invention elle vient directement en appui sur le support sans présence d'un rebord.Compared to the solutions described in the documents US A 4,649,285 and US A 5,718,147 it removes the base plate and the cylinder head is simplified because thanks to the invention it comes directly on the support without the presence of a rim.

En considérant le document WO 01/31195 , on voit que l'on peut simplifier encore le démarreur. En effet la couronne du réducteur dans un mode de réalisation comporte avantageusement une extension conformée pour assurer une fonction d'articulation du levier de commande. Ainsi on évite l'emploi d'une pièce rapportée pour réaliser la surface d'appui et d'articulation du levier de commande et on simplifie les opérations d'usinage pour maintien sans jeu des pièces à assembler.Considering the document WO 01/31195 it can be seen that the starter can be further simplified. Indeed, the ring gear of the gearbox in one embodiment advantageously comprises an extension shaped to provide a function of articulation of the control lever. Thus it avoids the use of an insert to achieve the bearing surface and articulation of the control lever and simplifies the machining operations for maintaining play free parts to assemble.

Un plot en matériau souple, notamment en élastomère, est de préférence interposé entre l'extension de la couronne et une face d'appui de la cuve du contacteur. La présence du plot évite l'usinage de cette partie du contacteur.A pad of flexible material, especially elastomer, is preferably interposed between the extension of the ring and a bearing surface of the contactor tank. The presence of the stud avoids the machining of this part of the contactor.

Selon un premier mode de réalisation, l'extension de la couronne est dotée de moyens d'appui, tels que une ou deux languettes, constituant un palier à la partie arrière de l'articulation du levier, la partie avant de ladite articulation étant réalisée par un logement sur le support du démarreur.According to a first embodiment, the extension of the crown is provided with support means, such as one or two tongues, constituting a bearing at the rear part of the articulation of the lever, the front part of said articulation being realized by a housing on the starter support.

Selon un deuxième mode de réalisation, l'extension de la couronne comprend une chape d'articulation du levier de commande, de manière à intégrer totalement l'axe de pivotement du levier à la couronne du réducteur. Divers montages sont possibles :

  • la chape et le levier de commande comportent des orifices pour l'insertion d'un axe de pivotement traversant ;
  • la chape est équipée de deux pattes élastiques munies de deux orifices alignés pour la réception de l'axe de pivotement intégré au levier ;
  • la chape comprend deux pattes élastiques pourvues de tourillons destinés à s'engager dans une gorge annulaire du levier de commande ;
  • la chape comporte un berceau en forme de U servant de logement à l'axe de pivotement, lequel peut faire partie ou non du levier de commande.
According to a second embodiment, the extension of the crown comprises a pivoting yoke of the control lever, so as to fully integrate the pivot axis of the lever to the gearbox crown. Various montages are possible:
  • the yoke and the control lever have orifices for insertion of a pivot axis through;
  • the yoke is equipped with two elastic tabs provided with two aligned orifices for receiving the pivot axis integrated in the lever;
  • the yoke comprises two elastic lugs provided with pins for engaging in an annular groove of the control lever;
  • the yoke comprises a U-shaped cradle for housing the pivot axis, which may or may not be part of the control lever.

Selon une troisième mode de réalisation, l'extension pour l'articulation du levier est formée par une pièce solidarisée à la couronne par des moyens de fixation connus en soi.According to a third embodiment, the extension for the articulation of the lever is formed by a piece secured to the ring by fastening means known per se.

L'extension peut assurer une fonction supplémentaire.
En effet selon un mode de réalisation la couronne du réducteur comporte une extension conformée en un élément d'arrêt mâle engagé dans une cavité du support recevant le levier de commande. L'extension de la couronne s'adapte à la largeur de la cavité, laquelle constitue un élément femelle de positionnement et de guidage du levier de commande.The extension can provide an additional function.
Indeed, according to one embodiment, the ring gear of the gearbox comprises an extension shaped as a male stop element engaged in a cavity of the support receiving the control lever. The extension of the crown adapts to the width of the cavity, which constitutes a female element for positioning and guiding the control lever.

La conception du support de démarreur est simplifiée par rapport à celui du document FR2787833 , car il ne nécessite pas de nervures ou de formes spécifiques pour l'arrêt en rotation de la couronne. La cavité de logement du levier de commande remplit automatiquement cette fonction d'arrêt lors de l'insertion de l'extension de la couronne.The design of the starter bracket is simplified compared to that of the document FR2787833 because it does not require ribs or specific shapes for stopping rotation of the crown. The control lever housing cavity automatically performs this stop function when inserting the crown extension.

De préférence, l'extension de la couronne comprend une chape d'articulation du levier de commande ou une ou deux languettes. La couronne est également simplifiée, car la chape ou la ou les languettes d'articulation du levier de commande assure simultanément l'arrêt en rotation de la couronne. Un plot en matériau souple est de manière précitée interposé entre l'extension de la couronne et une face d'appui du contacteur.Preferably, the extension of the crown comprises an articulation clevis of the control lever or one or two tongues. The crown is also simplified, because the yoke or the hinge or tongues of the control lever simultaneously ensures the rotational stop of the crown. A pad of flexible material is in the aforementioned manner interposed between the extension of the ring and a contact surface of the contactor.

Les risques de déformation au moulage de la couronne en thermoplastique sont limités, et l'absence de nervures ou d'autres formes en relief à l'intérieur du support de démarreur, libère du volume disponible pour loger des composants plus encombrants, par exemple un lanceur de plus grand diamètre.The risk of molding deformation of the thermoplastic crown is limited, and the absence of ribs or other forms in relief inside the starter support, frees up the volume available to house more bulky components, for example a thrower of larger diameter.

L'extension peut venir de moulage avec la couronne, ou être formée par une pièce solidarisée à la couronne par des moyens de fixation.The extension may come from molding with the crown, or be formed by a piece secured to the ring by fixing means.

Description sommaire des dessinsBrief description of the drawings

D'autres avantages et caractéristiques ressortiront plus clairement de la description qui va suivre d'un mode de réalisation de l'invention donné à titre d'exemple non limitatif, et représenté aux dessins annexés, dans lesquels:

  • la figure 1 est une vue en coupe axiale d'un démarreur équipé d'un levier articulé de commande de lanceur selon l'invention ;
  • la figure 2 montre une vue en coupe à échelle agrandie de la couronne du réducteur de vitesse, laquelle comprend une chape d'articulation d'un axe de pivotement rapporté ;
  • la figure 3 représente une vue de profil de la figure 2 ;
  • les figures 4, 5, et 7 sont des vues identiques de la figure 3 de trois variantes de réalisation de l'articulation du levier de commande du lanceur ;
  • la figure 6 est une vue en coupe verticale de la figure 7 ;
  • la figure 8 est une vue de l'intérieur du support de démarreur au niveau de la couronne dentée du réducteur de vitesse ;
  • la figure 9 est une vue en coupe selon la ligne 9-9 de la figure 8 ;
  • la figure 10 est une vue en coupe à plus grande échelle du réducteur de la figure 1, montrant le centrage de la couronne par rapport au support et à la culasse ;
  • la figure 11 est une vue partielle analogue à la figure 3 sans le levier pour une autre variante de réalisation à une seule languette d'extension de la couronne du réducteur du démarreur.
Other advantages and features will emerge more clearly from the following description of an embodiment of the invention given by way of non-limiting example, and represented in the accompanying drawings, in which:
  • the figure 1 is an axial sectional view of a starter equipped with an articulated launcher control lever according to the invention;
  • the figure 2 shows a sectional view on an enlarged scale of the gearbox crown, which comprises a hinge yoke of a reported pivot axis;
  • the figure 3 represents a profile view of the figure 2 ;
  • the figures 4 , 5 , and 7 are identical views of the figure 3 three embodiments of the articulation of the control lever of the launcher;
  • the figure 6 is a vertical sectional view of the figure 7 ;
  • the figure 8 is a view of the inside of the starter support at the gear ring of the gearbox;
  • the figure 9 is a sectional view along the line 9-9 of the figure 8 ;
  • the figure 10 is a sectional view on a larger scale of the reducer of the figure 1 , showing the centering of the crown relative to the support and the cylinder head;
  • the figure 11 is a partial view similar to the figure 3 without the lever for another embodiment of a single extension tab of the starter gear of the gearbox.

Description d'un mode de réalisation préférentiel de l'invention.Description of a preferred embodiment of the invention

En référence à la figure 1, le démarreur 10 comporte un moteur électrique 11 composé d'un stator 12 et d'un rotor 13 montés de manière coaxiale, le stator 12 entourant le rotor 13, lequel est monté tournant autour d'un axe 14 à l'intérieur d'une culasse 15. Cette dernière est solidaire du support 16 métallique du démarreur destiné à être fixé sur une partie fixe du véhicule automobile.
Le support 16 est ici en matière moulable, par exemple à base d'aluminium.
Le stator 12 comporte par exemple un bobinage inducteur 17 comportant deux paires d'enroulements 18, qui sont enroulés chacun autour d'une masse polaire 19 solidaire de la culasse 15. Les masses polaires 19 sont fixées à l'aide de vis 20 à la culasse 15, ici métallique, comme décrit dans le document FR-A- 2 611 096 (figure 1). Chaque enroulement 18 est composé d'un conducteur continu enroulé autour de la masse polaire 19 dans le sens de son épaisseur de manière à former des spires jointives concentriques de diamètre croissant comme mieux visible dans les figures 2 à 5 du document EP A 749 194 . L'axe de chaque enroulement 18 est radial par rapport à l'axe 14 du rotor 13, lequel constitue l'axe de rotation du moteur électrique 11.With reference to the figure 1 , the starter 10 comprises an electric motor 11 composed of a stator 12 and a rotor 13 mounted coaxially, the stator 12 surrounding the rotor 13, which is rotatably mounted about an axis 14 inside a cylinder head 15. The latter is secured to the metal support of the starter for attachment to a fixed part of the motor vehicle.
The support 16 is here made of moldable material, for example based on aluminum.
The stator 12 comprises, for example, an inductor coil 17 comprising two pairs of windings 18, which are each wound around a polar mass 19 integral with the cylinder head 15. The polar masses 19 are fixed by means of screws 20 to the cylinder head 15, here metallic, as described in the document FR-A-2,611,096 ( figure 1 ). Each winding 18 is composed of a continuous conductor wound around the polar mass 19 in the direction of its thickness so as to form concentric contiguous turns of increasing diameter as better visible in the Figures 2 to 5 of the document EP A 749 194 . The axis of each winding 18 is radial relative to the axis 14 of the rotor 13, which constitutes the axis of rotation of the electric motor 11.

Le rotor 13 comporte un paquet de tôles dotées de rainures pour le montage de conducteurs 21 électriques en forme d'épingles. Ces conducteurs 21 sont reliés entre eux pour former un bobinage rotorique en liaison avec des lames 22 conductrices appartenant à un collecteur 23 solidaire de l'arbre 24 du moteur électrique 11. En variante le bobinage est à fil continu.The rotor 13 comprises a bundle of plates provided with grooves for mounting electrical conductors 21 in the form of pins. These conductors 21 are interconnected to form a rotor winding in connection with the conductive blades 22 belonging to a collector 23 integral with the shaft 24 of the electric motor 11. As a variant, the winding is in continuous wire.

Des balais 25 frottent sur les lames 22 collectrices du collecteur 23 pour alimenter le bobinage rotorique. Les balais 25 appartiennent à un porte balais 26 équipé de cages de guidage et de réception des balais, lesquels sont sollicités en direction des lames 22 collectrices par des ressorts 27. Le porte-balais 26 est solidaire d'un palier arrière 28 présentant dans la partie centrale un logement pour le montage d'un roulement à aiguilles 29. Le palier 28 sert au montage à rotation de l'extrémité arrière de l'arbre 24 du moteur électrique 11. L'axe de cet arbre 24 est confondu avec l'axe 14 du rotor 13, et avec l'axe de l'arbre de sortie 43, constituant l'arbre du lanceur 30. Le palier 29 arrière sert de centreur à l'extrémité arrière de la culasse 15, et est relié par des tirants 31 au support 16 du démarreur 10. On voit à la figure 8 deux trous taraudés (non référencés) dans le support pour le vissage des tirants. Ces trous sont diamétralement opposés et sont réalisés chacun à la faveur d'une oreille saillante radialement et axialement que comporte le support à l'arrière (voir également figures 1 et 10). Les tirants 31 sont implantés à l'extérieur de la culasse 15. Ici un faible jeu existe entre les tirants et la périphérie externe de la culasse 15 de forme tubulaire.
On voit dans la figure 8 que le support présente deux grandes oreilles nervurées, chaque oreille comportant un trou pour le passage d'un organe de fixation, tel qu'une vis ou un boulon, du support à une partie fixe, telle que le carter du moteur à combustion interne. L'une des oreilles présente un trou supplémentaire. Ici les trous sont taraudés.Brushes 25 rub on the collector slats 22 of the manifold 23 to supply the rotor winding. The brushes 25 belong to a brush holder 26 equipped with guiding cages and receiving brushes, which are biased towards the slats 22 by means of springs 27. The brush holder 26 is integral with a rear bearing 28 having in the central portion a housing for mounting a needle bearing 29. The bearing 28 serves for rotatably mounting the rear end of the shaft 24 of the electric motor 11. The axis of this shaft 24 coincides with the 14 of the rotor 13, and with the axis of the output shaft 43, constituting the starter shaft 30. The rear bearing 29 serves as a centering device at the rear end of the cylinder head 15, and is connected by tie rods 31 at support 16 of the starter 10. It can be seen at figure 8 two threaded holes (not referenced) in the support for screwing the tie rods. These holes are diametrically opposed and are each made with the aid of a radially and axially projecting lug that the support at the rear (see also figures 1 and 10 ). The tie rods 31 are located outside the cylinder head 15. Here a small clearance exists between the tie rods and the outer periphery of the cylinder-shaped cylinder head 15.
We see in the figure 8 that the support has two large ribbed ears, each ear having a hole for the passage of a fastener, such as a screw or a bolt, the support to a fixed part, such as the housing of the internal combustion engine. One of the ears has an extra hole. Here the holes are tapped.

Le démarreur 10 comporte également un contacteur 32 électromagnétique s'étendant parallèlement au moteur électrique 11 en étant implanté radialement au-dessus de celui-ci. Le contacteur 32 présente une cuve 33 portée par le support 16, et équipée d'une bobine B d'excitation dotée d'au moins un enroulement. La cuve 33 est fermée à l'avant par un capot 34 en matière électriquement isolante. La fixation du capot 34 est réalisée par rabattement de matière de l'extrémité libre de la cuve 33. Un épaulement de la cuve 33 permet d'assurer le calage axial d'un noyau fixe 35, lequel est calé axialement dans l'autre sens par le capot 34 portant des bornes 36, 37 d'alimentation électrique.The starter 10 also comprises an electromagnetic contactor 32 extending parallel to the electric motor 11 by being radially implanted above it. The contactor 32 has a tank 33 carried by the support 16, and equipped with an excitation coil B provided with at least one winding. The tank 33 is closed at the front by a cover 34 made of electrically insulating material. The fixing of the cover 34 is made by folding the material of the free end of the tank 33. A shoulder of the tank 33 ensures the axial setting of a fixed core 35, which is wedged axially in the other direction by the cover 34 carrying terminals 36, 37 of power supply.

Les bornes 36, 37 sont conformées pour former chacune un contact fixe 38 à l'intérieur du capot 34. L'une des bornes 36 est destinée à être reliée à la borne positive de la batterie, l'autre 37 est connectée par l'intermédiaire d'un câble 39 à l'entrée du bobinage inducteur 17 du stator et aux balais 25 de polarités positives. Lors de l'excitation de la bobine B, un noyau mobile 40 est attiré par attraction magnétique en direction du noyau fixe 35 pour provoquer simultanément la fermeture des contacts du contacteur 32, et l'actionnement d'un levier 41 de commande du lanceur 30.The terminals 36, 37 are shaped to each form a fixed contact 38 inside the cover 34. One of the terminals 36 is intended to be connected to the positive terminal of the battery, the other 37 is connected by the intermediate of a cable 39 at the input of the inductor winding 17 of the stator and brushes 25 of positive polarity. During the excitation of the coil B, a mobile core 40 is attracted by magnetic attraction towards the fixed core 35 to simultaneously cause the closing of the contacts of the contactor 32, and the actuation of a control lever 41 of the launcher 30 .

L'arbre de sortie 43 est monté dans un palier 42 avant du support 16, constitué à titre d'exemple par un roulement à aiguille. L'extrémité arrière de l'arbre de sortie 43 présente, comme décrit dans le document FR-A-2787833 , un évidement pour l'agencement d'un palier lisse 44 servant au montage à rotation de l'extrémité avant de l'arbre 24 du moteur électrique 11. Cette extrémité avant est configurée pour former un pignon solaire 49 appartenant à un train épicycloïdal constituant un réducteur de vitesses 45 à engrenages, lequel est interposé entre l'arbre de sortie 43 et l'arbre 24 du moteur électrique 11.The output shaft 43 is mounted in a bearing 42 before the support 16, constituted for example by a needle bearing. The rear end of the output shaft 43 has, as described in the document FR-A-2787833 , a recess for the arrangement of a sliding bearing 44 for rotatably mounting the front end of the shaft 24 of the electric motor 11. This front end is configured to form a sun gear 49 belonging to a planetary gear train constituting a gear reducer 45 which is interposed between the output shaft 43 and the shaft 24 of the electric motor 11.

Le réducteur de vitesse 45 comporte une couronne 46 cylindrique immobilisée en rotation et ayant une jupe annulaire 61 dentée intérieurement (figures 1, 2, 6, 10). La jupe 61 est d'orientation axiale et a donc une forme cylindrique. Les dents 48 de le jupe 61 de la couronne 46 ont une orientation axiale, et engrènent avec des pignons satellites 47 montés à rotation autour d'axes portés par un plateau transversal solidaire de l'extrémité arrière de l'arbre 43 du lanceur 30. La couronne 46 est une pièce moulée. Ici la couronne 46 est en matière plastique moulable, de préférence en matière thermoplastique rigide, avantageusement renforcée par des fibres.The speed reducer 45 comprises a cylindrical ring 46 immobilized in rotation and having an annular skirt 61 toothed internally ( figures 1 , 2 , 6 , 10 ). The skirt 61 is axially oriented and therefore has a cylindrical shape. The teeth 48 of the skirt 61 of the ring 46 have an axial orientation, and mesh with planet gears 47 mounted to rotate about axes carried by a transverse plate secured to the rear end of the shaft 43 of the launcher 30. The ring 46 is a molded part. Here the ring 46 is moldable plastic material, preferably rigid thermoplastic material, advantageously reinforced by fibers.

Le lanceur 30 est monté coulissant sur l'arbre de sortie 43, et comporte un pignon d'entraînement 50, un entraîneur 51 actionné par le levier de commande 41 pivotant, et une roue libre 52 intercalée axialement entre l'entraîneur 51 et le pignon 50.
Le support 16 , de forme creuse, comporte des logements pour le lanceur 30 et pour le levier 41 comme mieux visible dans les figures 1 et 8 à 10.
L'entraîneur 51 est doté intérieurement de cannelures hélicoïdales en prise de manière complémentaire avec des dentures hélicoïdales externes portées par l'arbre de sortie 43. Le lanceur 30 est ainsi animé d'un mouvement hélicoïdal lorsqu'il est déplacé par le levier 41 contre la butée 53 pour venir, par l'intermédiaire de son pignon 50, en prise avec la couronne de démarrage d'un moteur à combustion interne (non représentée) à la faveur d'un échancrure réalisée dans la partie avant, en forme d'ogive, du support creux 16 (figures 1,9 et 10).
Il est clair que le dispositif à roue libre 52 peut être remplacé par un dispositif d'attelage à embrayage conique, du type décrit dans le document FR-A-2772433 .
De même il est clair que le lanceur 30 en variante est implanté en partie à l'extérieur du support à l'avant de celui-ci. Plus précisément le pignon 50 du lanceur 30, au lieu d'être implanté dans le support (figures 1 et 10), peut être implanté à l'extérieur du support comme visible par exemple dans le document FR A 2 745 855 auquel on se reportera.
Le moteur à combustion interne peut être fixe ou appartenir à un véhicule automobile, tel qu'un véhicule de tourisme ou un bateau.The launcher 30 is slidably mounted on the output shaft 43, and comprises a drive gear 50, a driver 51 actuated by the control lever 41 pivoting, and a free wheel 52 interposed axially between the driver 51 and the pinion 50.
The support 16, of hollow form, comprises housings for the launcher 30 and for the lever 41 as better visible in the figures 1 and 8 to 10 .
The driver 51 is internally provided with helical splines in complementary engagement with external helical teeth carried by the output shaft 43. The launcher 30 is thus driven by a helical movement when it is moved by the lever 41 against the stop 53 to come, via its pinion 50, engaged with the starter ring of a internal combustion engine (not shown) by means of a notch made in the ogival-shaped front part of the hollow support 16 ( figures 1 , 9 and 10 ).
It is clear that the freewheel device 52 can be replaced by a conical clutch coupling device, of the type described in the document FR-A-2772433 .
Similarly it is clear that the launcher 30 variant is implanted partly outside the support at the front thereof. More precisely the pinion 50 of the launcher 30, instead of being implanted in the support ( figures 1 and 10 ), can be implanted outside the support as visible for example in the document FR A 2,745,855 to which we will refer.
The internal combustion engine can be stationary or belong to a motor vehicle, such as a passenger vehicle or a boat.

Le levier de commande 41 est accouplé par son extrémité supérieure au noyau mobile 40 du contacteur 32, et comporte dans sa partie médiane un axe de pivotement 54, qui selon une caractéristique, peut être intégré partiellement ou totalement dans une extension de la couronne 46 dentée fixe du réducteur 45 de vitesse à engrenages. Le levier 41 est en une pièce moulée, de préférence en matière thermoplastique rigide, de préférence renforcée par des fibres.The control lever 41 is coupled by its upper end to the movable core 40 of the contactor 32, and comprises in its middle part a pivot axis 54, which according to one characteristic, can be integrated partially or completely in an extension of the toothed crown 46 fixed gear reducer 45 gear. The lever 41 is a molded part, preferably a rigid thermoplastic material, preferably reinforced with fibers.

Comme mieux visible dans les figures 8 et 9, le support comporte un premier logement pour notamment la partie inférieure du levier 41 et pour la partie avant de la couronne 46 et un second logement de taille réduite pour le montage de l'axe de pivotement 54 et la partie supérieure du levier. A la figure 8 on voit deux trous au niveau du second logement pour la fixation de la cuve du contacteur à l'aide de vis. Le contour du second logement comporte un épaulement annulaire pour appui de la partie avant se la cuve 33 de forme cylindrique.As better visible in Figures 8 and 9 , the support comprises a first housing for particularly the lower part of the lever 41 and the front portion of the ring 46 and a second reduced-size housing for mounting the pivot axis 54 and the upper part of the lever. To the figure 8 we see two holes in the second housing for fixing the tank of the contactor with screws. The contour of the second housing comprises an annular shoulder for supporting the front portion to the tank 33 of cylindrical shape.

Le premier logement est délimité à l'arrière par un contour de forme annulaire pour logement de la partie avant de la couronne 46.
Le contour du second logement s'étend en saillie axiale par rapport au contour du premier logement (figure 9).
Un passage radial 170 est réalisé entre les deux logements (figure 8).
Ce passage comporte une cavité 69 décrite ci-aprèsThe first housing is delimited at the rear by an annular contour for housing the front portion of the ring 46.
The contour of the second housing extends in axial projection relative to the contour of the first housing ( figure 9 ).
A radial passage 170 is formed between the two housings ( figure 8 ).
This passage comprises a cavity 69 described below

Selon la figure 1, l'extension de la couronne 46 du réducteur 45 est constituée d'une ou de deux languettes 55 plates comprenant chacune un palier 56 semi-cylindrique destiné à recevoir l'axe de pivotement 54.
La ou les languettes 55 sont implantées à la périphérie externe de la couronne 46 et sont ici venues de moulage avec la couronne 46. Ce ou ces languettes 55 sont d'orientation transversale par rapport à l'axe 14 et sont dirigées vers le contacteur électromagnétique 32. Ce ou ces paliers 56 constituent des moyens d'appui du levier 41 à la partie arrière de l'articulation, tandis que la partie avant de l'articulation est réalisée par un logement en forme de palier sur le support 16. L'espace restant entre l'arrière de ou des languettes 55 et la face d'appui 57 du contacteur 32 est occupé par un plot d'étanchéité 58 en élastomère susceptible d'absorber les variations dimensionnelles.
Dans cet exemple de réalisation, le palier 56 semi-cylindrique vient de moulage avec les languettes 55 d'extension de la couronne 46, et l'axe de pivotement 54 vient de moulage avec le levier de commande 41. L'avantage d'un tel montage évite l'emploi d'une pièce rapportée pour réaliser la surface d'appui et d'articulation du levier 41, et permet de simplifier les opérations d'usinage pour le maintien sans jeu des pièces à assembler.According to figure 1 , the extension of the ring gear 46 of the gearbox 45 consists of one or two flat tabs 55 each comprising a semi-cylindrical bearing 56 intended to receive the pivot axis 54.
The tongue or tabs 55 are implanted at the outer periphery of the ring 46 and here are integrally molded with the ring 46. This or these tabs 55 are of transverse orientation with respect to the axis 14 and are directed towards the electromagnetic contactor 32. This or these bearings 56 constitute support means of the lever 41 to the rear part of the joint, while the front part of the joint is formed by a bearing-shaped housing on the support 16. The remaining space between the rear of or tongues 55 and the bearing face 57 of the contactor 32 is occupied by a sealing pad 58 made of elastomer capable of absorbing dimensional variations.
In this exemplary embodiment, the semi-cylindrical bearing 56 is molded with the tongues 55 extending the ring 46, and the pivot axis 54 is molded with the control lever 41. The advantage of a such assembly avoids the use of an insert to achieve the bearing surface and articulation of the lever 41, and simplifies the machining operations for maintaining play free parts to assemble.

Les figures 2 à 7 montrent d'autres exemples de réalisation dans lesquels l'axe de pivotement 54 du levier 41 est intégré totalement à la couronne 46 du réducteur 45.The Figures 2 to 7 show other embodiments in which the pivot axis 54 of the lever 41 is totally integrated in the ring 46 of the gearbox 45.

En référence aux figures 2 et 3, le levier de commande 41 comporte des logements d'articulation 59 à la partie supérieure pour la liaison avec le noyau mobile 40, et une fourchette 60 à la partie inférieure destinée à s'engager dans l'entraîneur 51. La jupe 61 annulaire à dents 48 internes et d'orientation axiale de la couronne 46 est reliée à un flasque 62 radial, lequel est percé en son centre d'un trou 63 traversé coaxialement par l'arbre de sortie 43.
Le flasque 62, d'orientation transversale par rapport à l'axe 14, constitue le fond de la couronne 46. Ce flasque 62, appartenant à la partie avant de la couronne 46, comporte de préférence dorsalement des nervures radiales (non référencées à la figure 3) pour sa rigidification.
La couronne 46 du réducteur 45 est dotée d'une chape 64 permettant l'insertion de l'axe de pivotement 54 pour l'articulation du levier 41. La chape 64 remplace les languettes 55 et vient avantageusement de moulage avec la couronne 46, tandis que l'axe de pivotement 54 est une pièce rapportée traversant un trou du levier 41 pour se loger dans des orifices 65 alignés de la chape 64, qui s'étend transversalement à la périphérie externe de la couronne 46 et ce en direction du contacteur de la figure 1.With reference to Figures 2 and 3 , the control lever 41 comprises hinge housings 59 at the upper part for connection with the movable core 40, and a fork 60 at the lower part intended to engage in the driver 51. The annular skirt 61 to teeth 48 internal and axial orientation of the ring 46 is connected to a radial flange 62, which is pierced at its center with a hole 63 coaxially traversed by the output shaft 43.
The flange 62, transversely oriented relative to the axis 14, constitutes the bottom of the ring 46. This flange 62, belonging to the front portion of the ring 46, preferably comprises dorsally radial ribs (not referenced to the figure 3 ) for its stiffening.
The ring 46 of the gearbox 45 is provided with a yoke 64 enabling the pivot pin 54 to be inserted for the articulation of the lever 41. The yoke 64 replaces the tongues 55 and advantageously molds with the ring 46, while that the pivot axis 54 is an insert passing through a hole of the lever 41 to be housed in aligned orifices 65 of the yoke 64, which extends transversely to the outer periphery of the ring 46 and in the direction of the contactor the figure 1 .

Sur la figure 4, la chape 64 de la couronne 46 est formée par deux pattes 64a, 64b élastiques munies de deux orifices 65 alignés. L'axe de pivotement 54 vient de moulage avec le levier 41, et peut être introduit dans les orifices 65 après écartement transversal des pattes 64a, 64b.On the figure 4 , the yoke 64 of the ring 46 is formed by two tabs 64a, 64b elastic provided with two orifices 65 aligned. The pivot axis 54 is molded with the lever 41, and can be introduced into the orifices 65 after transverse spacing of the tabs 64a, 64b.

Sur la figure 5, les deux pattes 64a, 64b élastiques de la chape 64 sont munies chacune d'un tourillon 66 venant se clipser dans une gorge 67 annulaire du levier de commande 41 pour constituer l'articulation de ce dernier sur la couronne 46.On the figure 5 , the two tabs 64a, 64b elastic of the yoke 64 are each provided with a pin 66 which is clipped into an annular groove 67 of the control lever 41 to form the hinge of the latter on the ring 46.

Sur la variante des figures 6 et 7, la chape 64 prévue sur l'extension de la couronne 46 dentée, comporte un berceau 68 en forme de U dans lequel est engagé l'axe de pivotement 54. Ce dernier peut être intégré au levier de commande 41, notamment par moulage, ou être rapporté transversalement dans un orifice du levier 41.On the variant of Figures 6 and 7 , the yoke 64 provided on the extension of the toothed crown 46, comprises a U-shaped cradle 68 in which the pivot axis 54 is engaged. The pivot axis 54 can be integrated into the lever of FIG. 41, in particular by molding, or be reported transversely in an orifice of the lever 41.

Il est clair que la chape 64 de logement de l'axe de pivotement 54 peut être constituée par une pièce fixée sur la couronne 46 dentée, au lieu de venir directement de moulage avec la couronne du réducteur, comme dans les exemples des figures 2 à 7. La pièce d'articulation peut être solidarisée mécaniquement à la couronne par tout mode de fixation, notamment par soudage, collage, clipsage, sertissage, coulissement dans une rainure en T ou queue d'aronde.It is clear that the clevis 64 housing the pivot axis 54 may be constituted by a piece fixed on the ring gear 46, instead of coming directly from molding with the gearbox crown, as in the examples of the Figures 2 to 7 . The hinge piece can be mechanically secured to the ring by any method of attachment, including welding, gluing, clipping, crimping, sliding in a T-slot or dovetail.

Le montage intégré de l'articulation du levier de commande 41 sur la couronne 46 du réducteur 45, tel que représenté sur les exemples de réalisation des figures 2 à 7, permet d'obtenir les avantages suivants :

  • simplification de l'usinage du support 16,
  • la face d'appui 57 du contacteur 32, et le logement de l'appui du levier 41 peuvent rester bruts,
  • le plot d'étanchéité 58 en élastomère est une pièce moins coûteuse que l'appui du levier selon le document FR-A-2787833 .
The integrated assembly of the articulation of the control lever 41 on the ring 46 of the gearbox 45, as shown in the exemplary embodiments of the Figures 2 to 7 , provides the following benefits:
  • simplification of the machining of the support 16,
  • the bearing face 57 of the contactor 32, and the housing of the support of the lever 41 can remain gross,
  • the sealing pad 58 made of elastomer is a less expensive piece than the support of the lever according to the document FR-A-2787833 .

En référence aux figures 8 et 9, le blocage en rotation de la couronne 46 dentée est avantageusement réalisé par la chape 64 qui vient se loger dans une cavité 69 de forme complémentaire ménagée de manière précitée dans le support 16. En plus de sa fonction d'articulation du levier de commande 41, la chape 64 constitue simultanément un élément d'arrêt mâle, lequel est dimensionné pour s'ajuster à la largeur de la cavité 69. Cette dernière, déjà agencée pour le positionnement et le guidage du levier de commande 41, constitue un élément femelle de retenue de la chape 64 pour l'immobilisation en rotation de la couronne 46 du réducteur 45.With reference to Figures 8 and 9 , the rotational locking of the ring gear 46 is advantageously achieved by the yoke 64 which is housed in a cavity 69 of complementary shape provided in the aforementioned manner in the support 16. In addition to its function of articulation of the control lever 41 , the yoke 64 simultaneously constitutes a male stopping element, which is dimensioned to fit the width of the cavity 69. The latter, already arranged for the positioning and guiding of the control lever 41, constitutes a female element of FIG. retaining the yoke 64 for the immobilization in rotation of the ring 46 of the gearbox 45.

Cette cavité 69 est délimitée, d'une part, par un fond en deux parties, référencées en pointillé en 369 à la figure 8, pour appui de la chape 64 et d'autre part, par deux bords latéraux 169. Les bords latéraux se raccordent à des bords axiaux (non référencés) décalés transversalement. Cela est réalisé par moulage.This cavity 69 is delimited, on the one hand, by a bottom in two parts, referenced in dotted line at 369 to the figure 8 , for support of the yoke 64 and secondly, by two lateral edges 169. The lateral edges are connected to axial edges (not referenced) offset transversely. This is done by molding.

En variante la ou les languettes (figures1 et 11) constituent l'élément d'arrêt mâle.
L'extension de la couronne, constituant un arrêt mâle engagée dans une cavité 69 du support 16 recevant le levier de commande, est donc conformée pour assurer une fonction d'arrêt en rotation de la couronne.
Cette extension est également conformée pour assurer une fonction d'articulation du levier de commande 41.
Le plot 58 est interposé entre une face d'appui 57 de la cuve 33 du contacteur 32 et l'extension. Ce plot est configuré à sa périphérie interne pour coopérer avec la périphérie externe de la culasse 15, qui est ainsi dépourvue d'échancrure à ce niveau et a une forme simple.
Le support 16 de démarreur est ainsi simplifié par rapport à celui des documents FR-A-2787833 et FR-A-2767157 , car il ne nécessite pas de nervures ou de rainures spécifiques pour l'arrêt en rotation de la couronne dentée 46. L'absence de nervures ou autres protubérances en relief à l'intérieur du support 16 de démarreur, libère du volume disponible pour loger des composants plus encombrants, par exemple un lanceur 30 de plus grand diamètre.In a variant, the tongue or tabs ( Figures 1 and 11 ) constitute the male stopping element.
The extension of the ring, constituting a male stop engaged in a cavity 69 of the support 16 receiving the control lever, is shaped to provide a stop function in rotation of the ring.
This extension is also shaped to provide a function of articulation of the control lever 41.
The stud 58 is interposed between a bearing face 57 of the tank 33 of the contactor 32 and the extension. This pad is configured at its inner periphery to cooperate with the outer periphery of the yoke 15, which is thus devoid of indentation at this level and has a simple shape.
The starter support 16 is thus simplified compared to that of the documents FR-A-2787833 and FR-A-2767157 because it does not require ribs or specific grooves for the rotational stop of the ring gear 46. The absence of ribs or other raised protuberances inside the starter support 16, releases the available volume to accommodate more bulky components, for example a launcher 30 of larger diameter.

La chape 64 possède dans l'exemple des figures 8 et 9, une double fonction d'articulation du levier 41 et d'arrêt en rotation de la couronne 46, ce qui simplifie également la fabrication de cette dernière. Les risques de déformation au moulage de la couronne 46 en thermoplastique sont ainsi limités.The yoke 64 has in the example of Figures 8 and 9 , a double function of articulation of the lever 41 and rotational stop of the ring 46, which also simplifies the manufacture of the latter. The risk of molding deformation of the crown 46 thermoplastic are thus limited.

La figure 10 montre le dispositif de positionnement de la couronne 46 du réducteur 45 par rapport support 16 du démarreur et la culasse 15 du moteur électrique 11. La couronne 46 présente à sa périphérie externe en saillie une collerette 73 ayant une première face d'appui 70 située dans le même plan que la deuxième face d'appui 71 du support 16 de démarreur, et que la troisième face d'appui 72 de la culasse 15 de l'inducteur.
Plus précisément la collerette 73, ici d'orientation radiale et de forme annulaire, est décalée axialement par rapport au fond 62 comme mieux visible dans les figures 2, et 6.
La deuxième face d'appui 71 du support est formée à l'extrémité libre du support 16, ici métallique, c'est-à-dire à l'extrémité arrière du support 16.
La troisième face d'appui de la culasse 15, ici métallique, est constituée par l'extrémité libre de la culasse 15 adjacente à la deuxième face d'appui 71.
Les faces d'appui 70 à 72 s'étendent transversalement par rapport à l'axe 14.
Le centrage de la couronne 46 dentée dans le support 16 est assuré par la première face d'appui 70 de la collerette 73. Le centrage de la culasse 15 sur la couronne 46 s'effectue sur le diamètre extérieur de la collerette 73. La troisième face d'appui 72 de la culasse 15 est en contact avec la deuxième face d'appui 71 du support 16, ce qui garantit en permanence la continuité électrique entre la culasse et le support.
On notera que la collerette 73 est prolongée vers l'arrière, en direction opposée au levier 41, par un réseau de nervures 402 d'orientation axiale de longueur différente. Ces nervures, réparties circonférentiellement, renforcent la jupe 61. On voit à la figure 2 que la périphérie externe du tronçon avant de la jupe 61, s'étendant entre le flasque 62 et la face d'appui 70 de la collerette 73, présente des saillies pointues 400. De même on voit en 401 des saillies pointues, qui s'étendent à la périphérie externe des nervures 402 comme mieux visible à la figure 8.
Ainsi on emmanche aisément à serrage le tronçon avant dans le premier logement du support et de même on monte à force la culasse sur les nervures 402. Cela est rendu aisé grâce aux saillies 400, 401, qui participent au blocage en rotation de la couronne et de la culasse 15.
Le blocage en translation axiale de la couronne 46 du réducteur 45 résulte de la présence de la collerette 73 radiale qui, par sa face d'appui 70, prend appui contre la deuxième face d'appui 71 du support 16, et d'un bossage d'arrêt 74. Ce dernier est obtenu par une forme emboutie dans la culasse 15, et venant en butée contre la jupe 61 à l'opposé de la collerette 73.
Plus précisément le bossage vient en butée sur la jupe 61 par l'intermédiaire d'un rebord radial d'une pièce 100 métallique appelée cache poussière calée axialement sur l'extrémité libre de la jupe à la faveur d'un épaulement (non référencé) de celle-ci. L'extrémité libre de la jupe 61 présente des pattes axiales, ici quatre pattes réparties circonférentiellement de manière régulière, engagées chacune dans une échancrure de la pièce 100 pour calage en rotation de celle-ci.The figure 10 shows the device for positioning the ring 46 of the gearbox 45 relative to the support 16 of the starter and the cylinder head 15 of the electric motor 11. The ring 46 has at its projecting outer periphery a collar 73 having a first bearing surface 70 located in the same plane as the second bearing face 71 of the starter support 16, and the third bearing face 72 of the yoke 15 of the inductor.
More precisely, the flange 73, here of radial orientation and of annular shape, is axially offset with respect to the bottom 62 as better visible in the figures 2 , and 6 .
The second bearing face 71 of the support is formed at the free end of the support 16, here metallic, that is to say at the rear end of the support 16.
The third bearing surface of the yoke 15, here metallic, is constituted by the free end of the yoke 15 adjacent to the second bearing face 71.
The bearing faces 70 to 72 extend transversely with respect to the axis 14.
The centering of the toothed crown 46 in the support 16 is provided by the first bearing face 70 of the collar 73. The centering of the cylinder head 15 on the ring 46 is effected on the outside diameter of the collar 73. The third bearing face 72 of the yoke 15 is in contact with the second bearing face 71 of the support 16, which permanently guarantees the electrical continuity between the yoke and the support.
It will be noted that the flange 73 is extended towards the rear, in the direction opposite to the lever 41, by a network of ribs 402 of axial orientation of different length. These ribs, distributed circumferentially, reinforce the skirt 61. It can be seen at figure 2 that the outer periphery of the front portion of the skirt 61, extending between the flange 62 and the bearing face 70 of the flange 73, has pointed projections 400. Similarly, in 401, pointed projections are seen which extend to the outer periphery ribs 402 as best visible at the figure 8 .
Thus it is easy to clamp the front section into the first housing of the support and the same is mounted by force the yoke on the ribs 402. This is made easy thanks to the projections 400, 401, which contribute to the rotational locking of the crown and the cylinder head 15.
The locking in axial translation of the ring 46 of the gearbox 45 results from the presence of the radial collar 73 which, by its bearing surface 70, bears against the second bearing face 71 of the support 16, and a boss 74. The latter is obtained by a form pressed into the cylinder head 15, and abutting against the skirt 61 opposite the flange 73.
More precisely, the boss comes into abutment on the skirt 61 via a radial flange of a metal piece 100 called a dust cover axially wedged on the free end of the skirt in favor of a shoulder (not referenced). of it. The free end of the skirt 61 has axial tabs, here four legs distributed circumferentially in a regular manner, each engaged in a notch of the part 100 for setting in rotation thereof.

La collerette 73 de centrage et de positionnement de la couronne 46 permet de simplifier les opérations d'usinage, et de réduire les chaînes de cotes du démarreur. Seule la deuxième face d'appui 71 du support 16 doit être usinée.The flange 73 of centering and positioning of the ring 46 simplifies the machining operations, and reduce the starter rating chains. Only the second bearing face 71 of the support 16 must be machined.

Ainsi qu'il en ressort à l'évidence de la description et des dessins, les languettes 55 et les pattes 64a, 64b de la chape 64 ménagent entre elles un espace pour le passage du levier de commande 41, ici en matière plastique. Les languettes 55 correspondent aux pattes 64a, 64b de la chape 64 avec seulement chacune un palier 56.As is evident from the description and the drawings, the tongues 55 and the tabs 64a, 64b of the yoke 64 form between them a space for the passage of the control lever 41, here plastic. The tabs 55 correspond to the tabs 64a, 64b of the yoke 64 with only one bearing 56.

Le levier 41 est relié au noyau mobile 40 via une tige attelée élastiquement au noyau mobile 40 comme visible partiellement à la figure 1, et mieux visible à la figure 2 du document FR-A-2787833 . La fourchette 60 comporte à son extrémité inférieure deux doigts pénétrant dans une gorge ménagée dans l'entraîneur 51, l'un des flancs de la gorge étant formé par une rondelle montée par encliquetage sur l'entraîneur, comme décrit dans le document FR-A-2687736 .The lever 41 is connected to the movable core 40 via a rod hitched elastically to the movable core 40 as visible partially to the figure 1 , and better visible at the figure 2 of the document FR-A-2787833 . The fork 60 has at its lower end two fingers penetrating into a groove in the driver 51, one of the sides of the groove being formed by a washer mounted snap on the trainer as described in the document FR-A-2687736 .

La culasse 15 de forme cylindrique comme la cuve 33, présente une structure simplifiée grâce à l'invention, puisque la couronne 46 présente une extension, ayant ici globalement une orientation transversale. Cette extension s'étend sensiblement dans le prolongement du flasque 62 de la couronne 46 de forme creuse, servant de logement au réducteur de vitesse à train épicycloïdal.The cylindrical cylinder head 15 like the tank 33, has a simplified structure thanks to the invention, since the ring 46 has an extension, here having a generally transverse orientation. This extension extends substantially in the extension of the flange 62 of the ring 46 of hollow form, serving as housing the speed reducer epicyclic train.

Bien entendu la présente invention n'est pas limitée aux exemples de réalisation décrits. Ainsi en variante l'axe 54 vient de moulage avec le levier 14 et il est prévu de manière précitée, comme visible à la figure 11, une seule languette 55 d'orientation transversale dirigée vers le contacteur et présentant à sa périphérie externe une creusure de réception 155 de l'axe de pivotement 54 de forme cylindrique. La languette 155 est donc d'épaisseur réduite au niveau de sa creusure 155 globalement de forme rectangulaire et débouchant à la périphérie externe de la languette 55 globalement de forme rectangulaire.
Le fond 159 de la creusure 155 constitue un épaulement pour l'axe 54 et a avantageusement un profil arrondi.
Cet axe 54 est ici du type de celui visible à la figure 4 et comporte donc deux plots cylindriques ou tourillons s'étendant de part et d'autre du corps du levier 41.
Par simplicité on a représenté à la figure 11 en pointillés que les plots de l'axe 54.
Dans ce cas ces plots sont délimités chacun par une face plane d'orientation transversale contrairement aux plots de l'axe 54 de la figure 4, qui sont délimités par une face inclinée pour écartement des pattes de la figure 4.
La largeur de la creusure 155, réalisée dans la face arrière de la languette 55 tournée vers le support 16, est supérieure à la longueur de l'axe 54.
La hauteur de cette creusure est supérieure au diamètre de l'axe 54.Of course, the present invention is not limited to the described embodiments. Thus, in a variant, the spindle 54 is molded with the lever 14 and is provided in the aforementioned manner, as visible in FIG. figure 11 , a single tongue 55 of transverse orientation directed towards the contactor and having at its outer periphery a receiving recess 155 of the pivot axis 54 of cylindrical shape. The tongue 155 is therefore of reduced thickness at its recess 155 generally of rectangular shape and opening to the outer periphery of the tongue 55 generally of rectangular shape.
The bottom 159 of the recess 155 constitutes a shoulder for the axis 54 and advantageously has a rounded profile.
This axis 54 is here of the type of that visible at the figure 4 and therefore comprises two cylindrical studs or trunnions extending on either side of the body of the lever 41.
For simplicity, we have shown figure 11 in dotted lines as the pins of the axis 54.
In this case these pads are each delimited by a plane face of transverse orientation unlike the pins of the axis 54 of the figure 4 , which are delimited by an inclined face for spacing the legs of the figure 4 .
The width of the recess 155, made in the rear face of the tongue 55 facing the support 16, is greater than the length of the axis 54.
The height of this hollow is greater than the diameter of the axis 54.

Dans cette figure 11 la creusure 155 présente centralement une réduction d'épaisseur 156, qui délimite ainsi deux portées 157 s'étendant de part et d'autre de la réduction d'épaisseur 156. Ces portées 157 sont des portées pour les plots de l'axe de pivotement 54.
La réduction d'épaisseur 156 évite des interférences avec le corps du levier 41.
Ainsi qu'il ressort à l'évidence de la description et de la figure 11 le profil arrondi du fond 159 est dimensionné en fonction du diamètre des plots de l'axe 54.
L'avantage d'un tel montage évite l'emploi d'une pièce rapportée pour réaliser la surface d'appui et d'articulation du levier 41, et permet de simplifier encore les opérations d'usinage pour le maintien sans jeu des pièces à assembler car la creusure est plus facile à réaliser que le ou les paliers 56. En outre on obtient une languette 55 robuste et large. Le fond 59 constitue en liaison avec les portées 157 un berceau pour l'axe du levier 41 et donc une surface d'appui pour celui-ci.
La largeur de cette languette 55 est dimensionnée en fonction de la cavité 69 de la figure 8. Les bords latéraux 210 de la languette 55 sont adaptés à coopérer de manière complémentaire avec les bords latéraux 169 (figure 8) délimitant la cavité 69 pour blocage ou immobilisation en rotation de la couronne 46.
Ici on a rigidifié centralement la languette 55.
Ainsi il est prévu deux nervures 158 s'étendant de part et d'autre d'une nervure 160 du type de celle visible à la figure 3.
Pour la formation aisée de ces nervures par moulage avec la couronne on prévoit une ouverture centrale 210 affectant centralement le fond 159 au niveau de la réduction d »épaisseur 156 de la creusure 155.
Les nervures 158 délimitent les bords latéraux de l'ouverture 210 de forme rectangulaire. La nervure centrale 160 débouche dans le fond longitudinal de l'ouverture 210.
On notera en référence aux figures 3, 4, 5, 7 que la couronne dentée 46, plus précisément le flasque 62, présente un ergot saillant référencé en 300 dans les figures 2 et 3. Cet ergot s'étendant de manière diamétralement opposée par rapport à la chape 64, ou en variante à la ou les languettes 55 remplaçant la chape 64. Cet ergot est reçu de manière complémentaire dans une cavité 269 du support 16 et participe ainsi au bocage en rotation de la couronne 46 en association avec l'extension de la couronne en forme de chape 64 ou d'au moins une languette 55.In this figure 11 the recess 155 centrally has a thickness reduction 156, which thus delimits two spans 157 extending on either side of the reduction of thickness 156. These spans 157 are spans for the studs of the pivot axis 54.
The thickness reduction 156 avoids interference with the body of the lever 41.
As is evident from the description and the figure 11 the rounded profile of the bottom 159 is dimensioned according to the diameter of the pads of the axis 54.
The advantage of such an assembly avoids the use of an insert to achieve the bearing surface and articulation of the lever 41, and further simplifies the machining operations for maintaining play free parts to assemble because the recess is easier to achieve than the bearing or bearings 56. In addition we obtain a tab 55 robust and wide. The bottom 59 forms in connection with the seats 157 a cradle for the axis of the lever 41 and therefore a bearing surface therefor.
The width of this tongue 55 is dimensioned according to the cavity 69 of the figure 8 . The lateral edges 210 of the tongue 55 are adapted to cooperate in a complementary manner with the lateral edges 169 ( figure 8 ) delimiting the cavity 69 for locking or immobilization in rotation of the ring 46.
Here the tongue 55 has been rigidified centrally.
Thus there are two ribs 158 extending on either side of a rib 160 of the type visible in FIG. figure 3 .
For the easy formation of these ribs by molding with the crown is provided a central opening 210 centrally affecting the bottom 159 at the thickness reduction 156 of the recess 155.
The ribs 158 define the lateral edges of the opening 210 of rectangular shape. The central rib 160 opens into the longitudinal bottom of the opening 210.
Note with reference to figures 3 , 4 , 5 , 7 that the ring gear 46, more precisely the flange 62, has a salient pin referenced 300 in the Figures 2 and 3 . This lug extending diametrically opposite by relative to the yoke 64, or alternatively to the tongue or tabs 55 replacing the yoke 64. This yoke is received in a complementary manner in a cavity 269 of the support 16 and thus participates in the rotational grooving of the ring 46 in association with the extension of the ring-shaped crown 64 or at least one tongue 55.

Claims (10)

  1. Starter for an internal combustion engine comprising a support (16) for the starter, an electric motor (1) having a shaft (24), a stator (12), a cylindrical housing (15) supporting the stator (12), and a rotor (13) coupled to an output shaft (43) for the rotational driving of a starter head (30) with the interposing of an epicyclic gearbox (45) between the output shaft (43) and the shaft of the electric motor (11), the said gearbox comprising:
    - a ring gear (46) having an internally toothed cylindrical annular skirt (61), and a radial flange (62) provided with a hole (63) for coaxial passage of the output shaft (43),
    - and means of axial centring of the said ring gear (46) in the support (16) of the starter,
    characterised in that the ring gear (46) of the gearbox (45) has a first abutment face (70) situated in the same plane as the connection interface between the support (16) and the housing (15) the plane being transverse with respect to the axis (14) of the rotor (13).
  2. Starter according to claim 1, characterised in that the connection interface between the support (16) and the housing (15) is delimited between a second abutment face (71) of the support (16) for the starter in axial abutment against a third abutment face (72) of the housing (15).
  3. Starter according to claim 2, characterised in that the third abutment face (72) of the housing (15) is in contact with the second abutment face (71) of the support (16) for the starter.
  4. Starter according to claim 3, characterised in that the second abutment face (71) for the support for the starter is formed at the free end of the support (16) for the starter, while the third abutment face of the housing (15) is formed by the free end of the housing (15) adjacent to the second abutment face (71) of the support (16) for the starter.
  5. Starter according to any one of the preceding claims, characterised in that the ring gear (46) comprises a collar (73) equipped with the first abutment face (70) coming into contact with the support (16) for the starter.
  6. Starter according to claim 5, characterised in that the collar (73) projects from the skirt (61) of the ring gear (46) in order to provide the centring of the housing (15) and ring gear (46) on the support (16).
  7. Starter according to claim 5 or 6, characterised in that the ring gear (46) of the gearbox (45) is locked in axial translation by the said collar (73) and by a stop protrusion (74) on the housing (15).
  8. Starter according to any one of claims 5 to 7, characterised in that the centring collar (73) is moulded directly with the ring gear (46).
  9. Starter according to any one of the preceding claims, characterised in that it comprises a starter head (30) provided with a driver (51), a control lever (41) in engagement with the driver (51) and a support (16) for the starter receiving a control lever (41), and in that the ring gear (46) of the gearbox (45) comprises an extension conformed so as to fulfil a function of articulation of the control lever (41).
  10. Starter according to any one of the preceding claims, characterised in that it comprises a starter head (30) provided with a driver (51), a control lever (41) in engagement with the driver (51) and a support (16) for the starter receiving a control lever (41), and in that the ring gear (46) of the gearbox (45) comprises an extension conformed as a male element engaged in a cavity (69) in the support (16) for the starter receiving the control lever (41) .
EP04805585A 2003-11-28 2004-11-29 Internal combustion engine starter comprising a cylinder head and speed reducer centring means on the case Not-in-force EP1687526B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL04805585T PL1687526T3 (en) 2003-11-28 2004-11-29 Internal combustion engine starter comprising a cylinder head and speed reducer centring means on the case

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR0314009A FR2863015B1 (en) 2003-11-28 2003-11-28 MOTOR VEHICLE STARTER WITH REDUCER EQUIPPED WITH CAPITAL ROTATION MECHANISM DEVICES
FR0314010A FR2863016B1 (en) 2003-11-28 2003-11-28 MOTOR VEHICLE STARTER EQUIPPED WITH REDUCER CENTERING AND CYLINDER HEADS ON THE HOUSING
FR0314011A FR2863017B1 (en) 2003-11-28 2003-11-28 MOTOR VEHICLE STARTER WITH REDUCER COMPRISING ARTICLES OF ARTICULATION OF THE CONTROL LEVER
PCT/FR2004/003060 WO2005054664A1 (en) 2003-11-28 2004-11-29 Internal combustion engine starter comprising a cylinder head and speed reducer centring means on the case

Publications (2)

Publication Number Publication Date
EP1687526A1 EP1687526A1 (en) 2006-08-09
EP1687526B1 true EP1687526B1 (en) 2008-05-14

Family

ID=34657562

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04805585A Not-in-force EP1687526B1 (en) 2003-11-28 2004-11-29 Internal combustion engine starter comprising a cylinder head and speed reducer centring means on the case

Country Status (9)

Country Link
US (1) US20070215089A1 (en)
EP (1) EP1687526B1 (en)
JP (1) JP2007512467A (en)
KR (1) KR20060123404A (en)
AT (1) ATE395510T1 (en)
DE (1) DE602004013827D1 (en)
ES (1) ES2307065T3 (en)
PL (1) PL1687526T3 (en)
WO (1) WO2005054664A1 (en)

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JP2009024545A (en) * 2007-07-18 2009-02-05 Mitsubishi Electric Corp Starter for internal combustion engine
FR2934933B1 (en) * 2008-08-11 2016-11-04 Valeo Equip Electr Moteur ROTATING ELECTRICAL MACHINE COMPRISING A BINDING GEAR SPEED REDUCER ASSEMBLY
FR2935029B1 (en) * 2008-08-12 2012-05-04 Valeo Equip Electr Moteur STARTER COMPRISING AN ARMOR ARMOR CARRIED BY A BEARING INTERPOSE BETWEEN INDUCTOR AND REDUCTOR
FR2969219B1 (en) 2010-12-20 2013-01-11 Valeo Equip Electr Moteur SPEED REDUCER ASSEMBLY OF A ROTATING ELECTRICAL MACHINE AND STARTER FOR THERMAL MOTOR THEREFOR
WO2012139123A2 (en) * 2011-04-07 2012-10-11 Remy Technologies, Llc Starter machine system and method
FR2978500B1 (en) 2011-07-26 2015-03-13 Valeo Equip Electr Moteur LAUNCHER MOBILE ASSEMBLY - GEAR CONTROL LEVER WITH A STARTING CROWN OF A THERMAL MOTOR AND STARTER OF A THERMAL MOTOR COMPRISING SUCH AN ASSEMBLY
FR2981412B1 (en) 2011-10-14 2017-04-14 Valeo Equip Electr Moteur STARTER HEAD AND STARTER EQUIPPED WITH SUCH HEAD
FR2982911B1 (en) 2011-11-18 2013-11-15 Valeo Equip Electr Moteur ELECTRICAL STARTER WITH ELECTRONIC INTEGRATED FILTER FOR INTERNAL COMBUSTION ENGINE
FR2985084B1 (en) 2011-12-22 2015-03-13 Valeo Equip Electr Moteur ELECTROMAGNETIC SWITCH FOR THERMAL ENGINE STARTER COMPRISING AT LEAST TWO MOVING CONTACTS
FR2997732A1 (en) 2012-11-08 2014-05-09 Valeo Equip Electr Moteur THERMAL MOTOR STARTER PROVIDED WITH SHEAR ABSORPTION DEVICE
DE102013205972B4 (en) * 2013-04-04 2021-06-10 Seg Automotive Germany Gmbh Freewheel device, starter device, method
FR3004496B1 (en) 2013-04-15 2017-08-11 Valeo Equip Electr Moteur CROWN WITH INSERT FOR SPEED REDUCER OF A THERMAL MOTOR STARTER AND CORRESPONDING SPEED REDUCER ASSEMBLY.
WO2015111719A1 (en) * 2014-01-27 2015-07-30 株式会社ミツバ Drive unit
CN107152365B (en) * 2016-03-03 2021-04-30 德昌电机(深圳)有限公司 Engine, engine starter and shell assembly thereof
US10677211B1 (en) * 2018-12-06 2020-06-09 Textron Inc. Integrated starter-generator
FR3089572B1 (en) * 2018-12-07 2021-04-02 Valeo Equip Electr Moteur REDUCER FOR A THERMAL ENGINE STARTER

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Also Published As

Publication number Publication date
US20070215089A1 (en) 2007-09-20
WO2005054664A1 (en) 2005-06-16
ATE395510T1 (en) 2008-05-15
EP1687526A1 (en) 2006-08-09
ES2307065T3 (en) 2008-11-16
KR20060123404A (en) 2006-12-01
PL1687526T3 (en) 2008-10-31
JP2007512467A (en) 2007-05-17
DE602004013827D1 (en) 2008-06-26

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