EP2769082A2 - Démarreur pour moteur à combustion interne - Google Patents
Démarreur pour moteur à combustion interneInfo
- Publication number
- EP2769082A2 EP2769082A2 EP12780245.2A EP12780245A EP2769082A2 EP 2769082 A2 EP2769082 A2 EP 2769082A2 EP 12780245 A EP12780245 A EP 12780245A EP 2769082 A2 EP2769082 A2 EP 2769082A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing
- starter
- outer ring
- casing
- axial
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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
- 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
- F02N15/062—Starter drives
- F02N15/063—Starter drives with resilient shock absorbers
-
- 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
Definitions
- the present invention relates to the technical field of internal combustion engine starters.
- the invention relates to a motor vehicle internal combustion engine starter.
- Such a starter generally comprises an electric motor associated with drive means of the internal combustion engine.
- the drive means are most often adapted to be coupled to the movable members of the internal combustion engine during a start-up phase of the latter and to be uncoupled from the internal combustion engine when the latter is running.
- the starter comprises an electromagnetic switch adapted to, firstly, control the power supply of the electric motor and, secondly, to control the coupling and uncoupling of the drive means from the combustion engine.
- the drive means comprise a launcher which is rotatable on itself and is movable in axial translation between a rest position and a driving position of the internal combustion engine. The launcher is then moved between its rest and driving positions by a lever operated by the electromagnetic switch. Since the starting of the internal combustion engine requires a relatively large driving torque, the drive means comprise a gearbox which is interposed between the launcher and a drive gear of the electric motor.
- the starter then comprises a starter head comprising a housing which delimits a reduction chamber and which comprises means for fixing the electric motor.
- the starter head also comprises a speed reducer disposed in the reduction chamber and consisting of an epicyclic gear train comprising in particular planet wheels, intended to be rotated by the drive gear of the electric motor, and a outer ring of axis ⁇ , connected to the casing by rotating connection means.
- Such a starter head and the starter which integrates it, give full satisfaction with regard to their starting function in the early stages of their use.
- a starter head for an internal combustion engine starter comprising:
- a housing which delimits a reduction chamber and which comprises means for fixing an electric drive motor comprising a drive pinion,
- a speed reducer which is arranged in the reduction chamber and which comprises an epicyclic gear train comprising planet gears intended to be rotated by the drive gear of the electric motor, and an outer shaft of axis ⁇ , relegated to the casing by means of rotating connection,
- this starter head for an internal combustion engine starter is characterized in that:
- the reduction chamber comprises a cylindrical bore of revolution of axis ⁇ for receiving the outer ring which has a cylindrical external shape of revolution complementary to that of the receiving bore,
- the rotating connection means comprise at least one torsion damping pad which is mounted between the ring gear and the casing to damp a torque between the housing and the ring gear and which is engaged in part at least in a housing arranged in the housing, the housing comprising at least one axial abutment adapted to prevent a translation of the damping buffer.
- rotational connection means between the outer ring and the casing which comprise at least one damping pad advantageously allows to absorb shocks due to sudden variations in speed and torque forming an inertial torque, induced by the internal combustion engine in its starting phase while it is still coupled to the starter.
- the energy induced by these variations in torque and rotational speed is dissipated by the damping buffers thus avoiding a rupture of the teeth of the launcher, the various toothed wheels constituting the gearbox or the drive gear of the electric motor.
- the torsion damping pad is mounted in axial compression in the housing between the axial stop and the ring. This prevents the inadvertent movement of the buffer or pads and thus prevents them from tearing.
- the torque between the housing and the ring is damped through dampers buffers and in that the rotation is stopped by at least this damping pad in compression. This prevents a too violent torque between the crown and the crankcase can cause a shock damaging all the equipment of the starter.
- the starter head further comprises at least one axial bearing forming an axial abutment adapted to prevent axial translation, the outer ring to the opposite of the mounting face.
- the damping pad can be made in any suitable manner.
- the damping pad is preferably made of an elastically deformable polymer material adapted to withstand the mechanical stresses as well as the temperature and chemical stress conditions specific to the environment of an internal combustion engine.
- the rotational connection means comprise at least three damping buffers each engaged in part at least in a housing arranged in the housing, each housing comprising at least one axial abutment adapted to prevent a translation of the corresponding damping pad of the gear unit to an end of the housing surrounding the pinion.
- each damping pad is immobilized in axial translation in both directions by, on the one hand, the axial stop of the casing and, on the other hand, the outer ring.
- This mounting method allows a simple immobilization of each damping buffer with a reduced number of parts so as to limit the manufacturing cost of the starter head according to the invention.
- the housing comprises a launcher chamber which is located opposite the mounting face relative to the reduction chamber while the starter head comprises, in the chamber launcher, an output shaft, axis ⁇ , which is rotated by the gearbox and carrying a launcher comprising a pinion for cooperating with a starting ring of a heat engine.
- the outer ring comprises a flange which carries a guide bearing of the output shaft.
- the integration from the flange to the outer ring reduces the number of components of the starter head according to the invention.
- the flange separates the reduction chamber from the launcher chamber. The separation thus produced makes it possible to protect the reduction assembly with a planetary gear train and possibly to confine lubricating greases in the reduction chamber.
- the rotating connection means are arranged in the launcher chamber. This feature makes it possible in particular to reduce the volume of the reduction chamber by using a portion of the volume of the launcher chamber which is not useful for the movements of the launcher.
- the invention also relates to a starter for a heat engine comprising a starter head according to the invention and an electric motor which is fixed on the housing and whose driving pinion drives the speed reducer.
- the starter comprises a closure plate of the reduction chamber interposed between the housing and the electric motor.
- This closure plate advantageously makes it easier to assemble the starter and to ensure confinement of the epicyclic gearbox.
- the closure plate ensures a locking of the axial translation of the outer ring.
- FIG. 1 is a schematic view of a starter for a heat engine according to the invention.
- FIG. 2 is a partial perspective in axial section of the starter head according to the invention, illustrated in Figure 1.
- - Figure 3 is a section, according to the plane III-III of Figure 1, the constituent epicyclic gear train and intended to equip the starter shown in Figure 1.
- FIG. 4 is a perspective showing on a larger scale a detail of Figure 3.
- a starter D according to the invention for a heat engine comprises a starter head 1 on which is fixed an electric motor M controlled by an electromagnetic switch C which also controls an integrated launcher L to the damping system 1.
- the embodiment of such a starter and its components are well known to those skilled in the art so that only the characteristics necessary for understanding the invention will be described. For more information on the details of realization of a starter which would not be described later, it is possible to refer to the documents FR 2 934 933, FR 2 843 427 and WO 2005/054664.
- the starter head 1 comprises a housing 2 on which the electric motor M is fixed.
- the casing 2 comprises fixing lugs 3 intended to allow attachment of the starter D on a heat engine that it intended to start.
- the casing 2 also comprises means 9 for fixing the electric motor M.
- the housing 2 is hollow and defines a reduction chamber 4 adjacent to a mounting surface 5 of the electric motor M on the housing 2.
- the reduction chamber 4 is extended, the opposite of the face 5, by a launcher chamber 6 inside which is the launcher L.
- the starter head 1 also includes a speed reducer 10 which is arranged in the reduction chamber 4.
- the reducer 10 comprises, as is apparent from Figure 3, an outer ring 11 which has a generally symmetrical shape of ⁇ axis revolution.
- the outer peripheral surface 12 of the ring 11 is smooth and cylindrical with axis A revolution while the inner peripheral surface 13 of the outer ring 11 is toothed.
- the inner toothed face 13 of the outer ring 11 cooperates with three planet gears 14 which are rotatable along axes parallel to the axis ⁇ .
- the planet gears 14 mesh a planet gear 15 coaxial with the outer ring 11.
- the planet gear 15 has a housing 16 for receiving the drive pinion 17 of the electric motor M.
- the housing 16 has a shape complementary to that of the pinion 17 of FIG. so that when the pinion 17 is engaged in the housing 16, the sun gear 15 is secured to a drive shaft of the axis motor ⁇ and not visible in the figures.
- the planet gears 14 are integral with a plate 18 rotatably connected to an output shaft 19 coaxial with A'axe
- the output shaft 19 extends into the launcher chamber 6 being supported by rotation guiding means 20 disposed in a housing wall 2 opposite the gearbox 10.
- the output shaft 19 carries the launcher L which is rotatably connected to the output shaft 19 while being movable in translation on the latter between a rest position R, shown in solid lines in Figure 1, and a driving position E of the internal combustion engine illustrated in phantom in Figure 1. In this position E, the launcher L is intended to cooperate with a start ring, not visible in the figures, which extends partly inside the launcher chamber by a window 21 of the housing 2.
- the launcher L is moved between its rest positions R and E drive by a l sink 22 operated by the electromagnetic switch C.
- the outer ring 11 comprises at its face facing the launcher chamber 6 a flange 25 which carries a guide bearing 26 of the output shaft 19.
- the flange 25 further contributes to separating the reduction chamber 11 from the launcher chamber 6 so as to protect the reducing assembly 10.
- the reduction chamber 4 comprises a cylindrical bore of revolution of axis ⁇ which has a shape complementary to that of the outer surface 12 of the outer ring 11.
- the ring is rotatable relative to the casing 2.
- outer ring 11 is mounted between on the one hand, an axial bearing surface 27, forming a stop, arranged in the reduction chamber 4, at the boundary between the latter and the launcher chamber 6, and on the other hand a portion of the closing plate 28 interposed between the casing 2 and the motor M.
- the closure plate 28 and the axial bearing surface 4 make it possible to limit the axial translation of the outer ring 11 and thus limit the axial deformation of the shock absorber pad 36.
- the plate closure 28 helps to confine the gears 14 and 15 as well as the inner surface 13 of the ring 11 so as to protect the gearbox 10.
- the closure plate 28 comprises, at a bore central geometry 29, means for guiding the rotation of the induced shaft of the electric motor.
- the outer ring 11 In order to allow transmission of the rotation of the drive pinion 17 to the planet gears 14 and thus to the output shaft 19, the outer ring 11 must be rotatably connected to the casing 2.
- the rotational connection means 35 comprise at least one and, according to the illustrated example, six damping pads 36, only three of which are visible at the figure 2.
- Each damping pad 36 is engaged in a housing 37, housing 2, arranged in the wall of the launcher chamber 6 at its end towards the reduction chamber 4.
- Each housing 37 has a shape complementary to that of the corresponding damping pad 36 and is open towards the inside of the launcher chamber 6.
- Each housing 37 is, furthermore, open towards the reduction chamber 4 so as to allow the corresponding buffer 36 to engage in a translational movement.
- bottom housing is inclined relative to the ax ⁇ (bottom housing is heard the face of the farthest housing 3 ⁇ 4e (flange housing 37 also includes two side walls 38 each defined by an intermediate rib 39 which separates the housing 37 from an adjacent housing.Each housing extends from the peripheral wall of the launcher chamber 6 in a direct manner. substantially radial ion inward of said launcher chamber 6.
- the connecting means 35 also comprise a skirt 40 which extends from the flange 25 inside the launcher chamber 6.
- the skirt 40 forms with the flange 25 and the outer ring 11 a one-piece assembly.
- the skirt 40 comprises in relation to each pad 36 at least one radial rib 41 which extends inside said pad 36 so as to bind it to the skirt 40 is thus to the outer ring 11.
- each housing 37, detecting a damping pad 36 comprises at least one axial abutment 45 adapted to prevent a translation of the damping pad 36 parallel to the axis A towards the inside of the launcher chamber 6, opposite the reduction chamber 4.
- the axial stops 45 are arranged in the wall of the launcher chamber 6 being separated from each other by notches 46 arranged in the wall of the launcher chamber 6.
- the notches 46 promote the circulation of a cooling air stream of the system 1. In addition these notches 46 allow a saving of material and therefore weight.
- damping buffers 36 are further immobilized axially by the outer ring 11 located opposite the abutments axia 45 relative to the damping pads 36.
- each damping pad 36 is perfectly immobilized in its housing 37 of so that it is not likely to move under the effect of the shocks induced by the engine start torque variations of which the starter according to the invention ensures startup.
- the outer ring 11 is made of plastic and the pads 36, made of viscoelastic material such as an elastomer, are overmolded on the latter so as to facilitate the assembly of the head of starter 1 and starter D according to the invention.
Landscapes
- 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)
- Gear Transmission (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1159320A FR2981412B1 (fr) | 2011-10-14 | 2011-10-14 | Tete de demarreur et demarreur equipe d'une telle tete |
PCT/FR2012/052323 WO2013054055A2 (fr) | 2011-10-14 | 2012-10-12 | Tete de demarreur et demarreur equipe d'une telle tete |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2769082A2 true EP2769082A2 (fr) | 2014-08-27 |
EP2769082B1 EP2769082B1 (fr) | 2025-04-09 |
Family
ID=47116075
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12780245.2A Active EP2769082B1 (fr) | 2011-10-14 | 2012-10-12 | Démarreur pour moteur à combustion interne |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2769082B1 (fr) |
CN (1) | CN103930668B (fr) |
FR (1) | FR2981412B1 (fr) |
WO (1) | WO2013054055A2 (fr) |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2591824B1 (fr) * | 1985-12-18 | 1995-02-24 | Paris & Du Rhone | Systeme de suspension perfectionne de la couronne exterieure a denture interne d'un reducteur epicycloidal par rapport a un manchon fixe entourant ce reducteur |
DE4302854C1 (de) * | 1993-02-02 | 1994-06-09 | Bosch Gmbh Robert | Andrehvorrichtung für Brennkraftmaschinen |
FR2787833B1 (fr) * | 1998-12-23 | 2001-03-02 | Valeo Equip Electr Moteur | Demarreur de vehicule automobile a reducteur a engrenages comportant des moyens formant amortisseur de torsion |
FR2843427B1 (fr) | 2002-07-03 | 2006-08-04 | Valeo Equip Electr Moteur | Demarreur a contacteur deporte sur le palier arriere du moteur electrique |
JP4135524B2 (ja) * | 2003-02-19 | 2008-08-20 | 株式会社デンソー | 始動装置 |
JP4111017B2 (ja) * | 2003-03-13 | 2008-07-02 | 株式会社デンソー | スタータ |
PL1687526T3 (pl) * | 2003-11-28 | 2008-10-31 | Valeo Equip Electr Moteur | Rozrusznik silnika spalinowego wyposażony w środki do centrowania reduktora prędkości i w głowicę na obudowie |
FR2863016B1 (fr) * | 2003-11-28 | 2007-11-16 | Valeo Equip Electr Moteur | Demarreur de vehicule automobile equipe de moyens de centrage du reducteur et de culasse sur le boitier |
FR2871532B1 (fr) * | 2004-06-09 | 2006-08-04 | Valeo Equip Electr Moteur | Demarreur, notamment de vehicule automobile, equipe d'un lanceur a roue libre par friction |
FR2910074B1 (fr) * | 2006-12-14 | 2009-01-23 | Valeo Equip Electr Moteur | Dispositif de demarrage pour moteur thermique, notamment de vehicule automobile |
US20080184845A1 (en) * | 2007-02-01 | 2008-08-07 | Farrar Peter K | Planetary starter apparatus and assembly method thereof |
JP4872907B2 (ja) * | 2007-12-26 | 2012-02-08 | 株式会社デンソー | スタータ |
FR2934933B1 (fr) * | 2008-08-11 | 2016-11-04 | Valeo Equip Electr Moteur | Machine electrique tournante comprenant un ensemble reducteur de vitesse a organe de liaison |
FR2937933B1 (fr) | 2008-11-04 | 2011-11-11 | Thierry Lefebvre | Ensemble de lavage mobile |
-
2011
- 2011-10-14 FR FR1159320A patent/FR2981412B1/fr active Active
-
2012
- 2012-10-12 EP EP12780245.2A patent/EP2769082B1/fr active Active
- 2012-10-12 CN CN201280055944.8A patent/CN103930668B/zh active Active
- 2012-10-12 WO PCT/FR2012/052323 patent/WO2013054055A2/fr active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
CN103930668A (zh) | 2014-07-16 |
CN103930668B (zh) | 2018-01-02 |
EP2769082B1 (fr) | 2025-04-09 |
FR2981412A1 (fr) | 2013-04-19 |
FR2981412B1 (fr) | 2017-04-14 |
WO2013054055A2 (fr) | 2013-04-18 |
WO2013054055A3 (fr) | 2013-11-14 |
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