EP2087229B1 - Démarreur pour mettre en marche un moteur à combustion interne, avec soutien de l'arbre de pignon - Google Patents

Démarreur pour mettre en marche un moteur à combustion interne, avec soutien de l'arbre de pignon Download PDF

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Publication number
EP2087229B1
EP2087229B1 EP07803176.2A EP07803176A EP2087229B1 EP 2087229 B1 EP2087229 B1 EP 2087229B1 EP 07803176 A EP07803176 A EP 07803176A EP 2087229 B1 EP2087229 B1 EP 2087229B1
Authority
EP
European Patent Office
Prior art keywords
starter
pinion
pinion shaft
shaft
drive shaft
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
EP07803176.2A
Other languages
German (de)
English (en)
Other versions
EP2087229A1 (fr
Inventor
Uwe Ehrenwall
Gerhard Kraemer
Gerhard Nonnenmann
Matthias Steinle
Oliver Liebich
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2087229A1 publication Critical patent/EP2087229A1/fr
Application granted granted Critical
Publication of EP2087229B1 publication Critical patent/EP2087229B1/fr
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
    • F02N15/06—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears the toothed gears being moved by axial displacement
    • F02N15/062—Starter drives
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • 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
    • F02N15/022—Gearing between starting-engines and started engines; Engagement or disengagement thereof the starter comprising an intermediate clutch
    • F02N15/023—Gearing between starting-engines and started engines; Engagement or disengagement thereof the starter comprising an intermediate clutch of the overrunning type
    • 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
    • Y10T74/134—Clutch connection

Definitions

  • the invention relates to a starter for starting an internal combustion engine according to the preamble of claim 1, and in particular a free-ejecting starter.
  • ertrieb starters are often used, such as in Fig. 2 of the US-A-5 099 703 disclosed.
  • These starters have an electric starter motor, the drive shaft drives a displaceable in a housing of the starter in the axial direction pinion shaft, which carries a pinion outside of the housing.
  • the drive shaft has an external toothing in the form of a helical thread, which meshes with a complementary internal toothing of a sliding together with the pinion shaft coupling part of a roller overrunning clutch between the drive shaft and the pinion shaft.
  • the roller overrunning clutch prevents after starting the internal combustion engine that the starter motor is driven by the internal combustion engine at a high speed and thereby damaged.
  • the starter is turned on, after which the pinion is meshed in a gear or a ring gear of the internal combustion engine by a Einspurmechanismus the starter moves the pinion shaft together with the coupling part of the overrunning clutch from an off or rest position of the pinion in a Einspur ein, in the pinion is meshed with the gear or the ring gear internal combustion engine and meshes with it.
  • the overrunning clutch and the pinion shaft to put the gear or the ring gear of the internal combustion engine in rotation, act in the region of the pinion large reaction forces on the pinion shaft.
  • the pinion shaft While the pinion shaft is supported and supported in the so-called Maulstartern both sides of the pinion and can hardly be deflected by the radial forces acting on the pinion, the pinion shaft in the so-called free-ejecting starters only on one side of the pinion, namely within the housing of the starter stored , At a deflection of Pinion shaft due to the radial forces applied to the pinion, the pinion shaft in this case expediently supported on the drive shaft via a bush arranged between the drive shaft and the hollow pinion shaft.
  • the FR-A-2 681 911 discloses a starter with a displaceable on a motor shaft of a starter motor hollow pinion shaft, which is displaceable for meshing the pinion from the starter motor in a Einspurwolf.
  • the pinion shaft is braced on the motor shaft via two shaft bearings that can be displaced together with the pinion shaft along the motor shaft, but does not extend to the vicinity of the external toothing of the motor shaft in the single-track position.
  • the present invention seeks to improve a starter of the type mentioned and in particular a free-ejecting starter to the effect that the roller races of the overrunning clutch are less heavily loaded by the radial forces acting on the pinion shaft during cranking of the internal combustion engine.
  • a device for supporting the pinion shaft in the Einspur ein on a side remote from the starter motor end portion of the outer toothing of the drive shaft By this measure, the pinion shaft can be supported in the Einspur ein additionally in the region of its end facing away from the pinion front end directly on the drive shaft when it is deflected slightly due to the force exerted on the pinion radial forces. In this way, the forces required to support the pinion shaft can be completely introduced bypassing the rollers of the overrunning clutch in the drive shaft.
  • the invention is based on the idea to maintain an existing in the off or rest position of the pinion shaft overlap between the pinion shaft and the outer teeth of the drive shaft until reaching the Einspur ein, so that in this position, the pinion shaft supported in the overlapping region on the outer toothing of the drive shaft can.
  • the overlap between the pinion shaft and the outer teeth of the drive shaft in the off and rest position is also present, but it is not large enough so that it is already lost quite a bit before reaching the Einspurwolf.
  • the support means comprises a socket whose front end facing the starter motor overlaps the outer toothing or a front, the pinion facing portion of the outer toothing.
  • the degree of overlap in the Einspur ein is more than 1.5 mm, to provide sufficient support of the pinion shaft on the external teeth, but on the other hand expediently less than 3 mm in order to avoid a customer not desired increase in the length of the starter ,
  • the bush is formed as a unit with the pinion shaft and forms a starter motor facing hollow end portion of the pinion shaft.
  • the sleeve separate from the pinion shaft and rotatably connect to this before mounting the pinion shaft with this, for example by pressing the bushing into a corresponding bore of the pinion shaft.
  • the bush expediently projects with radial clearance in an opposite bore of the drive shaft driven by the coupling part of the overrunning clutch.
  • the overlapping in the Einspurwolf with the sleeve or the pinion shaft portion of the formed as a coarse thread outer teeth of the drive shaft is not required for transmitting the rotation of the drive shaft on the coupling part of the one-way clutch and therefore may advantageously have a larger tip diameter than an adjacent, with the Female thread of the coupling part meshing portion of the external toothing, so that in the overlap region a very small radial play of about 0.1 to 0.15 mm can be set, which ensures in the case of a deflection of the pinion shaft for rapid support of the same on the outer toothing of the drive shaft.
  • the only partially shown in the drawing freely ejecting lenttrieb starter 2 for an internal combustion engine consists in a conventional manner of a starter housing 4, housed in a starter housing 4 starter motor 6 (only partially visible), the armature 8 rotatably with an armature - or drive shaft 10th is connected, one of a freewheel clutch 12 driven by the drive shaft 10, mounted on a roller bearing 14 in the starter housing 4 pinion shaft 16 which carries a pinion 20 at its free end 18 outside of the starter housing 4, and a Einspurmechanismus 22 for meshing the pinion 20 in a gear or a ring gear (not shown) of the internal combustion engine.
  • the meshing mechanism 22 includes an engagement relay 26 disposed above a pole housing 24 of the starter motor 6 and an engagement lever 30 disposed between the engagement relay 26 and a clutch member 28 of the one-way clutch 12.
  • the engagement lever 30 can be pivoted clockwise about a pivot bearing 32 by energizing the engagement relay 26, around the coupling part 28 of the one-way clutch 12 together with the pinion shaft 16 and the pinion 20 from a in Fig. 1 illustrated off or rest position of the starter 2 with respect to the drive shaft 10 in the axial direction to the left in an in Fig. 2 shown Einspurwolf to move, in which the pinion 20 is meshed with the gear or the ring gear of the internal combustion engine and meshes with this to turn the engine by power to the starter motor 6 and start.
  • the drive shaft 10 protrudes with its front end 30 facing away from the starter motor 6 into a stepped bore 32 of the pinion shaft 16 which is open toward the starter motor 6. Between the front end 30, which is in the off or inactive position of the pinion shaft 16 (FIG. Fig. 1 ) is completely immersed in a portion 34 of the stepped bore 32 with a smaller diameter, and a mounted in a pivot bearing 36 of a front bearing plate 38 of the pole housing 24 cylindrical portion 40, the drive shaft 10 is provided with an external toothing. This external toothing consists of two in the axial direction of the drive shaft 10 successively arranged coarse thread sections 42, 44 with different numbers of teeth.
  • the teeth of the two helical sections 42, 44 have the same thread pitch in the illustrated embodiment, but this need not necessarily be the case.
  • the front, facing away from the starter motor 6 helical section 42 of the drive shaft 10 has a smaller number of teeth and a shorter axial extent than the rear, the starter motor 6 adjacent helical section 44th
  • the overrunning clutch 12 has a plurality of clutch rollers 50, which between an inner roller track 52 on the outer peripheral surface of the starter motor 8 facing, enlarged in diameter portion of Pinion shaft 16 and an outer roller race 54 are arranged on the inner circumference of the driver portion 48 of cup-shaped enlarged portion 56 of the coupling part 28 and provide when turning the engine for a transmission of rotation of the coupling part 28 on the pinion shaft 16, but one of the rotation of the Pinion 16 enable independent rotation of the drive shaft 10, as soon as the speed of the after starting the internal combustion engine driven by this pinion shaft 16 exceeds the speed of the drive shaft 10 of the starter motor 6.
  • pinion shaft 16 has an integral extension sleeve 60, which projects so far in the direction of the starter motor 6 via the provided with the roller track 52 portion of the pinion shaft 16, that their free front end overlaps in the Einspur ein by a few millimeters with the front helical section 42 and can be supported on this when the pinion 20 is loaded with the force F.
  • a very small radial clearance of about 0.1 to 0.15 mm between a tip circle diameter of the front helical thread portion 42 and a cylindrical inner periphery of the extension sleeve 60 is provided.
  • the clearance between the inner circumference of the extension sleeve 60 and the tip diameter of the rear helical thread portion 44 is about 0.5 to 0.7 mm when in the off or inoperative position (FIG. Fig. 1 ) of the pinion shaft 16 and during the axial displacement of the pinion shaft 16 in the Einspur ein ( Fig. 2 ) is located within the extension sleeve 60.
  • the extension sleeve 60 projects with play into a stepped bore 62 of the coupling part 28 so that it can rotate in free-running with respect to the pinion shaft 16.

Claims (11)

  1. Démarreur (2) pour mettre en marche un moteur à combustion interne, notamment démarreur (2) librement expulsé, avec un moteur électrique de démarreur (6) comportant un arbre d'entraînement (10) pourvu d'un endentement extérieur, avec un arbre de pignon (16) supportant un pignon (20) ainsi qu'avec une partie d'embrayage (28) d'un embrayage en roue libre (12) disposé entre l'arbre d'entraînement (10) et l'arbre de pignon (16), la partie d'embrayage (28) comportant un endentement intérieur s'engrenant avec l'endentement extérieur de l'arbre d'entraînement (10) et pouvant être coulissé conjointement avec l'arbre de pignon (16) en partant du moteur de démarreur (6) dans la direction axiale de l'arbre d'entraînement (10), dans une position à une seule voie dans laquelle le pignon (20) s'engrène avec une roue dentée ou une couronne dentée du moteur à combustion interne, caractérisé par la présence d'un dispositif (60 ; 64) de soutien de l'arbre de pignon (16) dans la position à une seule voie sur une section (42) de l'endentement extérieur de l'arbre d'entraînement (10) opposée par rapport au moteur de démarreur (6).
  2. Démarreur selon la revendication 1, caractérisé en ce que le dispositif de soutien comprend une douille (60, 64) dont l'extrémité avant orientée vers le moteur de démarreur (6) chevauche la section (42) de l'endentement extérieur dans la position à une seule voie.
  3. Démarreur selon la revendication 2, caractérisé en ce que le chevauchement est supérieur à 1,5 mm.
  4. Démarreur selon la revendication 2 ou 3, caractérisé en ce que le chevauchement est inférieur à 5 mm et de préférence inférieur à 3 mm.
  5. Démarreur selon l'une quelconque des revendications 2 à 4, caractérisé en ce que la douille (60) fait partie intégrante de l'arbre de pignon (16).
  6. Démarreur selon la revendication 5, caractérisé en ce que la douille (60) forme une section d'extrémité creuse de l'arbre de pignon (16) orientée vers le moteur de démarreur (6).
  7. Démarreur selon l'une quelconque des revendications 2 à 4, caractérisé en ce que la douille (64) est un élément fabriqué séparément de l'arbre de pignon (16) et un élément relié solidairement en rotation avec l'arbre de pignon (16).
  8. Démarreur selon l'une quelconque des revendications 2 à 7, caractérisé en ce que la section (42) de l'endentement extérieur se chevauchant avec la douille (60 ; 64) présente un diamètre circulaire de tête supérieur à une section (44) connexe de l'endentement extérieur.
  9. Démarreur selon la revendication 8, caractérisé en ce qu'un jeu radial entre la section (42) de l'endentement extérieur et une circonférence intérieure de la douille (60 ; 64) est inférieur à 0,2 mm et qu'un jeu radial entre la section (44) de l'endentement extérieur et une circonférence intérieure de la douille (60 ; 64) est supérieur à 0,4 mm.
  10. Démarreur selon la revendication 8 ou 9, caractérisé en ce que les deux sections (42, 44) comportent un nombre de dents différent.
  11. Démarreur selon l'une quelconque des revendications 8 à 10, caractérisé en ce que les deux sections (42, 44) présentent une forme géométrique différente.
EP07803176.2A 2006-11-02 2007-09-03 Démarreur pour mettre en marche un moteur à combustion interne, avec soutien de l'arbre de pignon Not-in-force EP2087229B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006051578A DE102006051578A1 (de) 2006-11-02 2006-11-02 Starter zum Andrehen einer Brennkraftmaschine mit Ritzelwellenabstützung
PCT/EP2007/059191 WO2008052822A1 (fr) 2006-11-02 2007-09-03 Démarreur pour mettre en marche un moteur à combustion interne, avec soutien de l'arbre de pignon

Publications (2)

Publication Number Publication Date
EP2087229A1 EP2087229A1 (fr) 2009-08-12
EP2087229B1 true EP2087229B1 (fr) 2013-06-26

Family

ID=38663137

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07803176.2A Not-in-force EP2087229B1 (fr) 2006-11-02 2007-09-03 Démarreur pour mettre en marche un moteur à combustion interne, avec soutien de l'arbre de pignon

Country Status (5)

Country Link
US (1) US8371259B2 (fr)
EP (1) EP2087229B1 (fr)
CN (1) CN101573528B (fr)
DE (1) DE102006051578A1 (fr)
WO (1) WO2008052822A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006051578A1 (de) 2006-11-02 2008-05-08 Robert Bosch Gmbh Starter zum Andrehen einer Brennkraftmaschine mit Ritzelwellenabstützung
DE102008042464A1 (de) 2008-09-30 2010-04-01 Robert Bosch Gmbh Starter mit Steckritzelbefestigung
JP5251693B2 (ja) * 2009-04-10 2013-07-31 株式会社デンソー スタータ
DE102009046988A1 (de) 2009-11-23 2011-05-26 Robert Bosch Gmbh Geräuschoptimierte Startvorrichtung
US9512812B2 (en) * 2011-03-31 2016-12-06 Mitsubishi Electric Corporation Engine starting device
DE102011017534B4 (de) * 2011-04-26 2020-06-04 Seg Automotive Germany Gmbh Startvorrichtung für eine Brennkraftmaschine
JP2013083182A (ja) * 2011-10-07 2013-05-09 Denso Corp スタータ
JP2013083180A (ja) * 2011-10-07 2013-05-09 Denso Corp スタータ
DE102012211893B4 (de) * 2012-07-09 2021-03-18 Seg Automotive Germany Gmbh Frei ausstoßende Startvorrichtung für eine Brennkraftmaschine
EP3875749B1 (fr) * 2020-03-05 2023-05-03 Mahle International GmbH Appareil de démarrage pour entrainer un moteur à combustion interne et système de démarreur pour un moteur à combustion interne

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4916958A (en) * 1987-11-02 1990-04-17 Mitsubishi Denki Kabushiki Kaisha Pinion stopper of engine starter
JPH02110261U (fr) 1989-02-17 1990-09-04
JPH04104164U (ja) 1991-02-18 1992-09-08 三菱電機株式会社 スタータ装置
FR2681911A1 (fr) 1991-10-01 1993-04-02 Valeo Equip Electr Moteur Dispositif de butee pour lanceur de demarreur pour moteur a combustion interne et procede pour la mise en óoeuvre d'un tel dispositif.
FR2686125B1 (fr) * 1992-01-13 1995-07-07 Valeo Equip Electr Moteur Dispositif de butee pour lanceur de demarreur pour moteur a combustion interne.
FR2738599B1 (fr) * 1995-09-12 1997-10-03 Valeo Equip Electr Moteur Demarreur de vehicule automobile comportant un lanceur perfectionne et lanceur pour un tel demarreur
JP2002180936A (ja) * 2000-12-08 2002-06-26 Denso Corp スタータ
FR2827342B1 (fr) * 2001-07-10 2004-08-13 Valeo Equip Electr Moteur Demarreur pour vehicule automobile
DE10329580A1 (de) * 2003-06-30 2005-01-20 Robert Bosch Gmbh Einspureinrichtung für Starter
US20060117876A1 (en) * 2004-12-07 2006-06-08 Remy International, Inc. Sealed and oil lubricated starter motor gear reduction and overrunning clutch mechanism
DE102006051578A1 (de) 2006-11-02 2008-05-08 Robert Bosch Gmbh Starter zum Andrehen einer Brennkraftmaschine mit Ritzelwellenabstützung

Also Published As

Publication number Publication date
CN101573528A (zh) 2009-11-04
WO2008052822A1 (fr) 2008-05-08
US8371259B2 (en) 2013-02-12
DE102006051578A1 (de) 2008-05-08
EP2087229A1 (fr) 2009-08-12
CN101573528B (zh) 2011-07-13
US20100132648A1 (en) 2010-06-03

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