EP1873394A1 - Anlassvorrichtung für eine Brennkraftmaschine - Google Patents

Anlassvorrichtung für eine Brennkraftmaschine Download PDF

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Publication number
EP1873394A1
EP1873394A1 EP07108600A EP07108600A EP1873394A1 EP 1873394 A1 EP1873394 A1 EP 1873394A1 EP 07108600 A EP07108600 A EP 07108600A EP 07108600 A EP07108600 A EP 07108600A EP 1873394 A1 EP1873394 A1 EP 1873394A1
Authority
EP
European Patent Office
Prior art keywords
elastic metal
speed reducer
metal piece
heat engine
mounting bracket
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP07108600A
Other languages
English (en)
French (fr)
Inventor
Jean-Sébastien Valeo Equipements Electriques Motour Metral
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valeo Equipements Electriques Moteur SAS
Original Assignee
Valeo Equipements Electriques Moteur SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Valeo Equipements Electriques Moteur SAS filed Critical Valeo Equipements Electriques Moteur SAS
Publication of EP1873394A1 publication Critical patent/EP1873394A1/de
Withdrawn legal-status Critical Current

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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
    • 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
    • F02N11/00—Starting of engines by means of electric motors
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/13—Machine starters
    • Y10T74/131—Automatic
    • Y10T74/137—Reduction gearing

Definitions

  • the present invention generally relates to starters for transport vehicles and especially motor vehicles.
  • the invention relates to a starter comprising an electric motor, a speed reducer coupled to the electric motor and to a heat engine, a mounting bracket forming a housing in which are mounted the electric motor and the speed reducer, the gear reducer.
  • speed comprising a ring gear, at least one damping element intended to limit an angular deflection due to a torsional movement between the speed reducer and the mounting support and at least one centering element intended to facilitate the assembly of the gear reducer. speed and mounting bracket.
  • the patent FR2787833 of the Applicant discloses a motor vehicle starter comprising an electric motor and a speed reducer arranged in a housing.
  • the electric motor rotates a launcher.
  • the speed reducer is interposed between the electric motor and the launcher and has a crown.
  • the ring comprises pads made of elastomeric material which are interposed by a method of overmolding between the ring gear and complementary portions located in a housing cavity.
  • a function of torsion damper is thus provided by these pads of elastomeric material so as to absorb undesirable mechanical shocks.
  • the centering function mentioned above, between the speed reducer and the housing is provided by dedicated positioning means.
  • the object of the invention is to provide a starting device offering increased life and reduced cost compared with the solutions of the prior art.
  • a starting device for a heat engine suitable for equipping a transport vehicle, in particular a motor vehicle, comprises an electric motor equipped with a permanent magnet inductor, a speed reducer coupled to the electric motor and the motor.
  • thermal device a mounting bracket forming a housing, in which the electric motor and speed reducer are mounted, and the speed reducer comprises a ring gear, at least one damping element intended to limit an angular clearance due to a torsional movement between the speed reducer and the mounting bracket and at least one centering element for facilitating assembly of the speed reducer and the mounting bracket.
  • at least one damping element and at least one centering element of the device are formed in a single elastic metal part, and the elastic metal part comprises an extension for holding the permanent magnets.
  • the invention takes advantage of this structure in a single elastic metal piece to perform both the damping function, the centering function and the holding function of the permanent magnets.
  • the use of a metallic material to replace an elastomeric material improves the life of the starter by allowing increased angular travel between the speed reducer and the mounting bracket. This advantage results from a better shear strength of the metallic material with respect to the elastomeric materials, and contributes to an improvement of the general robustness of the starter. Moreover, it will be noted that the authorized fatigue of the metal material is generally greater than that of the elastomeric material.
  • the cost of the starter is reduced by the use of a single piece for performing two functions and the use of a less expensive metal material than elastomeric materials.
  • the elastic metal piece ensures a precise centering function of the speed reducer and the mounting bracket during the assembly operation.
  • the characteristic according to which the elastic metal piece comprises an extension makes it possible to reduce the number of pieces by granting the elastic metal piece an additional function of holding the permanent magnets.
  • the starter 1 comprises in known manner a mounting bracket 2 which will be called housing, composed of a front portion 21 and a rear portion 22.
  • An electric motor 3 and a speed reducer 4 are mounted in the housing. housing 2.
  • the starter 1 also comprises in the rear housing portion 22 an inductor 31 and an armature 32 which drives an armature shaft 33, or output shaft of the electric motor.
  • An electromagnetic contactor 5 acts in a known manner on a launcher 6, via a lever 51, for example, fork-shaped.
  • the launcher 6 is housed in the front part of 21.
  • the launcher 6 is slidably mounted on a launcher shaft 61.
  • the launcher shaft 61 is coaxial with the armature shaft 33 of the electric motor 3.
  • the launcher 6 rotates an output gear (not shown). ) coupled to the heat engine (not shown) during a start operation thereof.
  • the coupling of the output gear (not shown) and the heat engine (not shown) is usually made by gears.
  • those skilled in the art will find applications of the invention in a starter where the launcher 6 rotates a pulley generally coupled by belt to the engine.
  • the purpose of the speed reducer 4 is to adapt the torque and speed characteristics of the electric motor 3 to the performance requirements on the output gear (not shown), with a view to starting the engine (not shown).
  • This speed reducer 4 is interposed between a pinion 41 and the launcher shaft 61.
  • the pinion 41 is mounted at one end of the armature shaft 33.
  • the pinion 41 is engaged with the shaft of the launcher 61. so that these elements are rotated by the armature shaft 33 when the electric motor 3 is energized.
  • the pinion 41 protrudes axially towards the front housing portion 21, beyond a front face 311 of the inductor 31.
  • the speed reducer 4 may comprise an epicyclic gear train 42 as shown in FIG. 1.
  • the pinion 41 is called a sun gear.
  • the sun gear 41 cooperates with planet gears 43 of the epicyclic gear train 42.
  • the planet gears 43 are mounted on shafts 44 carried on a planet carrier plate 45 integral in rotation with the launcher shaft 61.
  • the epicyclic gear train 42 also comprises an internally toothed ring gear 46 into which the planet gears 43 engrain. This ring gear 46 is free to rotate.
  • Fixing elements 23 make it possible to assemble the front housing 21 and rear housing 22 parts. These fixing elements 23 are, for example, mounting screws.
  • the starter 1 comprises at least one elastic metal piece which satisfies both the damping function and the centering function of the speed reducer 4 and the housing 2.
  • this elastic metal piece is assigned the mark 7 and shown in FIGS. 2, 3 and 4 for this first particular embodiment of the invention.
  • the realization of two functions in one elastic metal piece 7 allows in particular to reduce the cost of the starter 1 by the use of a metal material available at a reasonable cost compared to an elastomeric material.
  • this particular embodiment comprises six elastic metal parts 7 interposed between the ring 46 of the speed reducer 4 and the housing 2, and more precisely between the speed reducer 4 and the rear housing part 22.
  • the elastic metal parts 7 are fixed on the rear housing part 22, for example using rivets.
  • other fastening means are possible such as screws or other methods known to those skilled in the art.
  • the fastening means (not shown) of the elastic metal parts 7 are mounted on an anchoring portion 71 arranged coaxially with the axis of the speed reducer 4 on the rear part of the housing 22.
  • the elastic metal parts 7 have the characteristic of being circumferential action and therefore allow better damping due to their location at the circumference 462 of the ring 46 of the speed reducer 4.
  • the impact of vibrations and shocks applied in the form of torques by the heat engine to the ring 46 is thus effectively limited.
  • the vibration and shock energy is dissipated by the elastic metal parts 7 biased by action forces exerted by the ring 46 and reaction forces due to the elasticity of these same elastic metal parts 7 fixed to the housing 2.
  • the elastic metal pieces 7 By arranging the elastic metal pieces 7 at the circumference 462, the amplitudes of the action and reaction forces as well as the oscillatory angular deflections of the ring 46 are optimally limited. The risk of damage to the ring 46 and thus minimized and the life of the starter 1 is increased.
  • the elastic metal parts 7 have a longitudinal shape and a symmetrical cross section comprising a substantially flat central portion corresponding to the anchoring portion 71 indicated above, and two parts 710 and 711 in U from and alternatively of the portion 71.
  • the U-shaped parts are replaced by V parts easily made by a folding method.
  • This form allows a better damping thanks to a greater angular movement between the speed reducer 4 and the housing 2.
  • this shape contributes to reduce the wear of the parts and thus to improve the life of the starter 1.
  • an adopted form of the elastic metal parts 7 makes it possible to limit to a minimum the shear stress exerted on them and contributes to prolonging their service life.
  • the shape of the elastic metal parts 7 is not limited to the longitudinal shape and symmetrical cross section more particularly described here, other symmetrical or unsymmetrical shapes are possible depending on the applications of the invention.
  • a metal sheet having a high shear strength can be used for the production of elastic metal parts 7.
  • the elastic metal parts 7 may be metal profiles or the like.
  • the elastic metal parts 7 interposed between the ring 46 of the speed reducer 4 and the rear housing part 22 are received in recesses 461 of the ring 46.
  • These recesses 461 provide better guidance during the assembly operation of the speed reducer 4 and the housing 2 and contribute to a simplification of the centering along a longitudinal axis of the starter corresponding to the axis of the ring 46.
  • the elastic metal parts are distributed evenly at a circumference 462 of the ring 46.
  • the elastic metal parts 7 may not be disposed at a circumference of the ring 46 and can be distributed unevenly.
  • Fig. 5 represents another particular embodiment of the invention.
  • this particular embodiment of the invention finds advantageous applications in starters comprising an electric motor equipped with a permanent magnet inductor.
  • the elastic metal parts 7 described above are replaced by elastic metal parts 7 'which also fulfill a function of holding the permanent magnets 31' to the placement of these permanent magnets 31 'in the housing 2 and during starter operation.
  • the elastic metal parts 7 ' comprise an extension 72'.
  • the extension 72 ' extends axially towards a bottom 221 of the rear housing part 22.
  • Maintaining the permanent magnets 31 'by the elastic metal parts 7' can reduce the number of parts of the starter.
  • the permanent magnets 31 ' When placing the permanent magnets 31 'in the housing 2, the permanent magnets 31' are not yet magnetized and holding elements are therefore necessary.
  • the holding elements are constituted by the extensions 72 'of the elastic metal parts 7'. A non-magnetized state of the permanent magnets 31 'facilitates the placement thereof in the rear housing portion 22 avoiding the presence of a magnetic attraction force between these permanent magnets 31' and the housing 2.
  • the elastic metal parts 7 ' have, in this particular embodiment, a shape similar to that of the elastic metal parts 7 described above although having a longer length, which has an advantage in terms of standardization and cost reduction.
  • the sectional profile of the elastic metal parts 7 and 7 'as shown in FIGS. 4 and 5 allow a lateral elasticity allowing a forced insertion of the extensions 72 'between two longitudinal faces facing 312'a and 312'b magnets permanent 31 '. After insertion of all the extensions 72 'between the permanent magnets 31', the elastic forces provided by these ensure the maintenance of the permanent magnets 31 'on the housing 2.
  • the elastic metal parts 7' can take steps various shapes depending on the permanent magnets used.
  • the extensions 72 ' are fixed on the casing 2 by means known to those skilled in the art, such as rivets or screws, as well as the elastic metal parts 7 described in the first particular embodiment of the invention. 'invention.
  • the elastic metal parts 7 ' comprise anchoring portions 72' able to be fixed coaxially with the rear part of the housing 22.
  • the elastic metal parts 7 ' also include tabs 73' interposed between the ring 46 of the speed reducer 4 and the permanent magnets 31 '.
  • Each tongue 73 ' is inclined radially with respect to the elastic metal piece 7' and in particular its extension 72 '.
  • the direction of the inclination of the tongue 73 ' is located towards the inside of the housing 2.

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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)
EP07108600A 2006-06-27 2007-05-22 Anlassvorrichtung für eine Brennkraftmaschine Withdrawn EP1873394A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0652677A FR2902840B1 (fr) 2006-06-27 2006-06-27 Dispositif de demarrage pour moteur thermique

Publications (1)

Publication Number Publication Date
EP1873394A1 true EP1873394A1 (de) 2008-01-02

Family

ID=37603611

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07108600A Withdrawn EP1873394A1 (de) 2006-06-27 2007-05-22 Anlassvorrichtung für eine Brennkraftmaschine

Country Status (4)

Country Link
US (1) US20070295119A1 (de)
EP (1) EP1873394A1 (de)
JP (1) JP2008008293A (de)
FR (1) FR2902840B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102362065A (zh) * 2009-03-25 2012-02-22 罗伯特·博世有限公司 具有集成的用于传动部件的减震装置的电机
WO2014033405A1 (fr) * 2012-08-31 2014-03-06 Valeo Equipements Electriques Moteur Demarreur muni d'une couronne dentee reliee axialement a un element elastique d'absorption de chocs

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008042431A1 (de) * 2008-09-29 2010-04-01 Robert Bosch Gmbh Reduziergetriebe sowie Startervorrichtung einer Brennkraftmaschine
US8277612B2 (en) * 2009-12-17 2012-10-02 Honeywell International Inc. Controlling the detectability of an article and method for authenticating the article
US20120125149A1 (en) * 2010-11-19 2012-05-24 Remy Technologies, L.L.C. Motor starter including an armature having an integral drive system
DE102011088219A1 (de) * 2011-12-12 2013-06-13 Robert Bosch Gmbh Starter für eine Brennkraftmaschine
US9366213B2 (en) * 2013-10-04 2016-06-14 978652 Ontario Limited Aircraft starter motor assembly
DE102019116094A1 (de) * 2019-06-13 2020-12-17 Seg Automotive Germany Gmbh Startermotor für eine Startvorrichtung zum Starten einer Brennkraftmaschine

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4302854C1 (de) 1993-02-02 1994-06-09 Bosch Gmbh Robert Andrehvorrichtung für Brennkraftmaschinen
FR2787833A1 (fr) 1998-12-23 2000-06-30 Valeo Equip Electr Moteur Demarreur de vehicule automobile a reducteur a engrenages comportant des moyens formant amortisseur de torsion
EP1298319A1 (de) * 2001-08-17 2003-04-02 Valeo Equipements Electriques Moteur Anlasserantrieb mit Kupplung, insbesondere für Kraftfahrzeugbrennkraftmaschinen
US20030125113A1 (en) * 1999-10-22 2003-07-03 Denso Corporation Shock absorber
EP1357287A2 (de) * 2002-04-26 2003-10-29 Denso Corporation Startvorrichtung
US20040123686A1 (en) * 2002-07-29 2004-07-01 Denso Corporation Starter
GB2409256A (en) * 2003-12-15 2005-06-22 Visteon Global Tech Inc A variable rate impact and oscillation absorber in a starter motor

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06284607A (ja) * 1993-03-26 1994-10-07 Mitsubishi Electric Corp 永久磁石式回転電機
JPH0956091A (ja) * 1995-08-18 1997-02-25 Mitsubishi Electric Corp 永久磁石式回転電機
DE10016706A1 (de) * 2000-04-05 2001-10-11 Bosch Gmbh Robert Startvorrichtung
EP1347171A1 (de) * 2002-03-22 2003-09-24 Valeo Mando Electrical Systems Korea Limited Anlasser mit Dämpfungseinrichtung
DE10302454A1 (de) * 2003-01-23 2004-07-29 Robert Bosch Gmbh Permanent erregte elektrische Maschine
FR2856531B1 (fr) * 2003-05-30 2014-06-06 Valeo Equip Electr Moteur Dispositif de fixation d'aimants permanents a l'interieur d'une culasse d'un inducteur de moteur electrique
JP4165362B2 (ja) * 2003-10-08 2008-10-15 株式会社デンソー スタータ
DE102005060395A1 (de) * 2004-12-17 2006-07-06 Denso Corp., Kariya Motoranlasser mit einem Drehmomentabsorber

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4302854C1 (de) 1993-02-02 1994-06-09 Bosch Gmbh Robert Andrehvorrichtung für Brennkraftmaschinen
FR2787833A1 (fr) 1998-12-23 2000-06-30 Valeo Equip Electr Moteur Demarreur de vehicule automobile a reducteur a engrenages comportant des moyens formant amortisseur de torsion
US20030125113A1 (en) * 1999-10-22 2003-07-03 Denso Corporation Shock absorber
EP1298319A1 (de) * 2001-08-17 2003-04-02 Valeo Equipements Electriques Moteur Anlasserantrieb mit Kupplung, insbesondere für Kraftfahrzeugbrennkraftmaschinen
EP1357287A2 (de) * 2002-04-26 2003-10-29 Denso Corporation Startvorrichtung
US20040123686A1 (en) * 2002-07-29 2004-07-01 Denso Corporation Starter
GB2409256A (en) * 2003-12-15 2005-06-22 Visteon Global Tech Inc A variable rate impact and oscillation absorber in a starter motor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102362065A (zh) * 2009-03-25 2012-02-22 罗伯特·博世有限公司 具有集成的用于传动部件的减震装置的电机
CN102362065B (zh) * 2009-03-25 2014-07-30 罗伯特·博世有限公司 具有集成的用于传动部件的减震装置的电机
WO2014033405A1 (fr) * 2012-08-31 2014-03-06 Valeo Equipements Electriques Moteur Demarreur muni d'une couronne dentee reliee axialement a un element elastique d'absorption de chocs
FR2995031A1 (fr) * 2012-08-31 2014-03-07 Valeo Equip Electr Moteur Demarreur muni d'une couronne dentee reliee axialement a un element elastique d'absorption de chocs

Also Published As

Publication number Publication date
FR2902840B1 (fr) 2013-03-29
FR2902840A1 (fr) 2007-12-28
JP2008008293A (ja) 2008-01-17
US20070295119A1 (en) 2007-12-27

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