EP2598746B1 - Dispositif de démarrage pour un moteur à combustion - Google Patents

Dispositif de démarrage pour un moteur à combustion Download PDF

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Publication number
EP2598746B1
EP2598746B1 EP11736094.1A EP11736094A EP2598746B1 EP 2598746 B1 EP2598746 B1 EP 2598746B1 EP 11736094 A EP11736094 A EP 11736094A EP 2598746 B1 EP2598746 B1 EP 2598746B1
Authority
EP
European Patent Office
Prior art keywords
hollow shaft
pinion
shaft
stop
stop element
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.)
Active
Application number
EP11736094.1A
Other languages
German (de)
English (en)
Other versions
EP2598746A1 (fr
Inventor
Reiner Hirning
Patrick Hallas
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.)
SEG Automotive Germany GmbH
Original Assignee
SEG Automotive Germany 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 SEG Automotive Germany GmbH filed Critical SEG Automotive Germany GmbH
Publication of EP2598746A1 publication Critical patent/EP2598746A1/fr
Application granted granted Critical
Publication of EP2598746B1 publication Critical patent/EP2598746B1/fr
Active 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
    • F02N15/065—Starter drives with blocking means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N15/00—Other power-operated starting apparatus; Component parts, details, or accessories, not provided for in, or of interest apart from groups F02N5/00 - F02N13/00
    • F02N15/006—Assembling or mounting of starting devices
    • 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
    • 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
    • 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 invention relates to a starting device for an internal combustion engine according to the preamble of claim 1.
  • a starting device for an internal combustion engine in which the starter pinion to be meshed into the ring gear of a flywheel is mounted on the starter shaft so as to be rotatable and axially displaceable via its pinion shaft.
  • the pinion is driven by a direction-dependent freewheel arrangement, the outer ring of which is non-rotatable with respect to the starter shaft and the inner ring of which - as a hollow shaft - is drive-connected to the pinion shaft in an axially displaceable manner.
  • the pinion is resiliently supported in the meshing direction against the hollow shaft, which is penetrated by the pinion shaft, which is supported against the meshing direction, and thus against its insertion direction into the hollow shaft to the hollow shaft with a limit stop.
  • the stop arrangement provided for this purpose is formed by a disk-shaped, elastic stop element which, when it extends radially to the pinion shaft and the hollow shaft, lies axially between them.
  • a starting device with a rotational direction-dependent coupling connection between a nut that runs on a screw bushing that is fixed in relation to a starter shaft and a coaxial coupling part that is flexibly connected to this nut via a screw coupling spring is from the U.S. 2,481,248 A known.
  • a starter pinion is arranged coaxially with respect to the coupling part in a rotationally fixed manner and axially spring-supported in the direction of a ring gear of a flywheel.
  • the axial spring support is provided by a helical spring which is arranged in an annular space between a section of the coupling part, which runs out against the starter pinion and is designed as a hollow shaft, and a shaft of the starter pinion.
  • the helical spring is axially supported on the one hand against the starter pinion and on the other hand against a radially inwardly projecting annular collar of the hollow shaft.
  • the ring collar is engaged from behind by a stop element in the form of a snap ring on the side axially opposite to the helical spring.
  • the snap ring is slipped axially onto the pinion shaft, which is correspondingly smaller in diameter to the inner diameter of the hollow shaft, and is held in engagement with a groove in the pinion shaft.
  • the pinion shaft has a radial distance that is necessary for plugging the snap ring onto the pinion shaft and therefore at least corresponds to the radial width of the snap ring, so that the engagement position of the snap ring in the groove is not secured via the hollow shaft.
  • a hollow shaft and the starter pinion are arranged on the drive shaft on the starter side, with a freewheel arrangement in between.
  • the hollow shaft is rotationally connected to the drive shaft and is longitudinally displaceable and the starter pinion is provided with a pinion shaft extending axially against the hollow shaft, which is drive-connected to the hollow shaft via the freewheel arrangement and is rotatably and axially displaceably guided on the drive shaft.
  • the drive pinion is axially supported on the pinion shaft side against the hollow shaft via a spring arrangement.
  • This spring arrangement consists of two spring groups, one of which, adjacent to the pinion, is formed by a slotted disc spring with a stop washer located between a part of the hollow shaft that extends radially across the pinion shaft and the hollow shaft, with the tongues of the disc spring and the stop disc on the part of the Immerse the hollow shaft in an annular groove.
  • the other The spring group is formed by a plate spring which is clamped between diagonally opposite frontal steps in the hollow shaft and in the pinion shaft and covers a gap between the axial end faces of the pinion shaft and the hollow shaft, which limits the spring deflection of the pinion shaft against the hollow shaft.
  • the displacement path of the pinion shaft relative to the hollow shaft is limited by the stop disk of the first spring arrangement, which engages in the annular groove of the pinion shaft.
  • the invention is based on the object of achieving a further simplification of the starting device according to the invention without impairing the functionality.
  • the invention makes use of the fact that the speeds of the internal combustion engine, which it reaches when driven via the starting device, are substantially below the operating speeds of the internal combustion engine.
  • the speeds of the pinion when driving the internal combustion engine via the starting device are below the speeds that are reached when the internal combustion engine is started and when the pinion is disengaged, i.e. when the pinion is dragged along by the internal combustion engine.
  • a stop arrangement is used for this purpose, which is effective at least in the "rebounded state" of the pinion to the hollow shaft, the rebounded state, according to the above statements, being reached when the internal combustion engine is started and while the pinion is disengaging, before the drive connection between the pinion and the drive shaft of the internal combustion engine is interrupted.
  • a stop arrangement is thus provided through which, at least at pinion speeds lying above, in particular significantly above the speeds of the starter device, a secured stop position is achieved by an expandable stop element that is overlapped by the hollow shaft, namely that the stop element with one of its radial engagement position to the pinion shaft securing radial distance from the hollow shaft is encompassed.
  • the hollow shaft has an annular space surrounding the stop element which expands radially starting from its area corresponding to the stop position, it is possible in connection with the axial displacement of the pinion shaft to the hollow shaft, starting from the stop position so far in the direction of the To move pinion that the stop element is to be mounted in a simple manner regardless of its axially secured position in radial engagement with the pinion shaft.
  • annular space is designed in a stepped manner, since the hollow shaft, the annular space and the corresponding radial expansion area thereof can be manufactured concentrically in a simple manner.
  • the axially resilient support opposite to the direction of insertion of the pinion shaft into the hollow shaft is expediently provided via a helical spring arrangement which is arranged around the pinion shaft and which is surrounded radially on the outside by an annular jacket of the hollow shaft, which axially slidably and torque-transmitting connected to the pinion shaft. It proves to be useful if the displacement path of the hollow shaft to the pinion shaft is limited by the ring jacket, so the ring jacket forms an axial stop, over which the "sprung state” is limited when it rests on the pinion, in which the "sprung state””limiting stop element lies outside its annular space securing the radial engagement position.
  • a stop arrangement is created by the invention for starting devices of internal combustion engines of the type mentioned, which has a snap ring-like stop element and in which in the stop position of the hollow shaft to the pinion shaft through the hollow shaft, a speed-dependent expansion of the snap ring preventing a radial stop for the snap ring is formed.
  • Fig. 1 the starting device 1 according to the invention with its most essential elements is shown in a view, the starter motor not being shown and also the drive shaft of the starting device extending therefrom being indicated only schematically by the axis 2.
  • the hollow shaft 5 encloses a portion of the pinion shaft 8, which extends in an axial extension to the pinion 3 and is integral with the pinion 3.
  • the hollow shaft 5 runs axially against the pinion 3 in an annular jacket 9, which surrounds the pinion shaft 8 and defines an annular space 10 in which a spring 11 extending axially between pinion 3 and hollow shaft 5, in particular in the form of a helical spring or wave spring, is arranged.
  • the hollow shaft 5 is supported in an axially displaceable and torque-transmitting manner relative to the pinion shaft 8 via a toothing 12.
  • the outer ring 6 of the freewheel assembly 4 then merges with its part overlapping the locking rollers 7 on the side remote from the pinion 3 into a radial ring wall 13, to which an axially extending neck part 14 connects, which is axially displaceable and torque-transmitting with the internal toothing 15 not shown, symbolized by the axis 2 drive shaft is in engagement.
  • the release device 16 grips around the neck part 14, as in FIG Fig. 1 indicated schematically, on the outer ring 6, the release device 16 engaging with a release fork 17 in an annular groove 18 which is delimited by annular disks 19, 20.
  • These are radially inwardly supported against one another and guided longitudinally displaceably on the neck part 14 and lie between a helical spring 21 surrounding the neck part 14 and a stop ring 22 which is anchored in a fixed position to the neck part 14, in particular as a snap ring.
  • the helical spring 21 is on the one hand, axially bracing the washers 19, 20 against each other, supported axially to the neck part 14 via the stop ring 22, and on the other hand against the annular wall 13.
  • the release device 16 with its fork 17 in the direction of the axis 2 is flexible against the outer ring 6 of the freewheel arrangement 4 is supported, the one opposite to the annular wall 13 is covered by an angle ring 23.
  • the angle ring 23 engages with its radial leg 24 in an annular groove 25 of the hollow shaft 5, which is held axially between the radial leg 24 and the annular wall 13 and can be displaced as part of the freewheel assembly 4 via the release device 16 along the pinion shaft 8.
  • the disengaging device 16 which can be pivoted about the fixed pivot axis 26 - when pivoting in the direction of arrow 27 - is displaced the disengaging fork 17 in the direction of the pinion 3 and the flywheel 28 of the internal combustion engine (not shown) which is located in the displacement path of the pinion 3 and has the ring gear 29, direct meshing of the pinion 3 with the ring gear 29 is only possible when the teeth of the pinion 3 and the ring gear 29 are in gap. If this is not the case, then the helical spring 11 located in the axial support of the pinion 3 against the hollow shaft 5 enables the pinion 3 to be axially displaced towards the hollow shaft 5 until the pinion 3 stops in relation to the ring jacket 9 of the hollow shaft 5.
  • the pinion 3 can mesh with the toothed ring 1.
  • the coil spring 11 is on the one hand a "sprung state” and on the other hand a "rebounded state When the release fork 17 is pivoted against the direction of the arrow 27.
  • the displacement path of the hollow shaft 5 relative to the pinion shaft 8 is via a stop arrangement 30 on the side facing away from the pinion 3, that is, in the direction of insertion 35 of the pinion shaft 8 into the hollow shaft.
  • the stop arrangement 30 comprises an annular stop element 31 with an end-face contact 32 with an annular space 33 in the hollow shaft 5, which has a circumferential wall 34 that extends over the stop element 31.
  • the radial distance between the circumferential wall 34 and the ring-shaped, expandable stop element 31, which is designed as a snap ring, for example, is selected in such a way that when the stop element 31 is located in the annular space 33, a radial expansion of the same is excluded, in which the stop element 31 is out of its radial position of engagement with the pinion shaft 8 could bark out.
  • the stop element 31 lies in particular in a recess formed by an annular groove 36 in the pinion shaft 8.
  • the annular space 33 expediently has a depth corresponding to the thickness of the annular stop element 31 and merges axially, in the direction in which the pinion shaft 8 is inserted into the hollow shaft 5, into a radially widened area 37, which preferably acts as the end of the hollow shaft 5 remote from the pinion 3
  • An open annular region is formed, the radial dimension of which is greater than the outer circumference of the annular stop element 31 that is widened for insertion into the annular groove 36.
  • stop arrangement 30 enables the stop arrangement 30 to be secured in a speed-selective manner in the embodiment of the starting device 1 according to the invention.
  • the starting point for this is that when the internal combustion engine is started using the starter device, the rotational speeds are generally significantly lower than when the internal combustion engine is in operation.
  • a speed-dependent expansion of the stop element 31, in particular designed as a snap ring or open spring ring, is to be feared if the limit speed is selected accordingly, but only at higher speeds and accordingly it is also sufficient for the function of the starting device if the protection against speed-dependent expansion of the stop element 31 is only acts at high speeds, as can be achieved, for example, if the freewheel arrangement 4 fails or if, for example, when the starting process is completed by rapidly revving the internal combustion engine for the pinion 3 reaches speeds which could lead to an impermissible expansion of the stop element 31.
  • This simplest form of the design of the stop arrangement 30 with speed-dependent restriction of the protection of the ring-shaped stop element 31 against an impermissibly large radial expansion not only makes the design of the stop arrangement 30 particularly simple and without any additional devices, but also offers through the axial displacement of the stop element 31 from the the radial rebound of the stop element 31 in the "rebounded state” limiting annular space 33 in the radially widened area 37 axially following the annular space 33 in the "sprung state” particularly good prerequisites for simple assembly.
  • the transition from the mounting position for the stop element 31 to the secured position of the stop element 31 is achieved simply by shifting the hollow shaft 5 to the pinion shaft 8 from the position of the hollow shaft 5 corresponding to the “spring-loaded state” to the “spring-loaded state”.

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)
  • Mechanical Operated Clutches (AREA)
  • Gears, Cams (AREA)
  • Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)

Claims (3)

  1. Dispositif de démarrage pour un moteur à combustion interne, comportant un pignon (3), un arbre creux (5) et une queue de pignon (8) s'insérant dans l'arbre creux (5), transmettant un couple à l'arbre creux (5) et pouvant se déplacer le long de celui-ci, laquelle queue de pignon (8) est supportée de manière à faire ressort contre l'arbre creux (5) à l'opposé de sa direction d'insertion (35) dans l'arbre creux (5) et est limitée pendant sa course de déplacement opposée à la direction d'insertion (35) dans l'arbre creux (5) par un agencement de butée (30) qui comporte un élément de butée (31) reçu dans une gorge annulaire (36) de la queue de pignon (8) venant en prise avec l'arbre ceux (5) et pouvant s'écarter radialement et élastiquement,
    dans lequel, dans la zone de butée, l'élément de butée (31) est entouré par l'arbre creux (5) avec une distance radiale bloquant sa position de prise radiale par rapport à la queue de pignon (8),
    caractérisé en ce que l'arbre creux (5) comporte un espace annulaire (33) entourant l'élément de butée (31), lequel espace annulaire est radialement élargi à partir de sa zone correspondant à la position de butée dans la direction d'insertion (35) de la queue de pignon (8).
  2. Dispositif de démarrage selon la revendication 1, caractérisé en ce que l'élément de butée (31) est réalisé sous la forme d'un anneau d'encliquetage.
  3. Dispositif de démarrage selon la revendication 1 ou 2, caractérisé en ce que l'espace annulaire (33), à partir de sa zone entourant l'élément de butée (31) de manière annulaire et limitant la butée de celui-ci, est formé en s'élargissant radialement de manière progressive.
EP11736094.1A 2010-07-27 2011-07-25 Dispositif de démarrage pour un moteur à combustion Active EP2598746B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010038444.5A DE102010038444B4 (de) 2010-07-27 2010-07-27 Startvorrichtung für eine Brennkraftmaschine
PCT/EP2011/062697 WO2012019900A1 (fr) 2010-07-27 2011-07-25 Dispositif de démarrage pour un moteur à combustion interne

Publications (2)

Publication Number Publication Date
EP2598746A1 EP2598746A1 (fr) 2013-06-05
EP2598746B1 true EP2598746B1 (fr) 2020-09-02

Family

ID=44628996

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11736094.1A Active EP2598746B1 (fr) 2010-07-27 2011-07-25 Dispositif de démarrage pour un moteur à combustion

Country Status (4)

Country Link
EP (1) EP2598746B1 (fr)
DE (1) DE102010038444B4 (fr)
HU (1) HUE051926T2 (fr)
WO (1) WO2012019900A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012210889B4 (de) * 2012-06-26 2021-03-18 Seg Automotive Germany Gmbh Andrehvorrichtung und Verfahren zur Montage einer Andrehvorrichtung
FR3004497B1 (fr) * 2013-04-10 2015-03-27 Valeo Equip Electr Moteur Demarreur a lanceur muni d'un element intermediaire de reduction de frottement entre un levier de commande et un entraineur
FR3038157B1 (fr) * 2015-06-26 2018-08-24 Valeo Equipements Electriques Moteur Demarreur de moteur thermique de vehicule automobile muni d'un embrayage a configuration amelioree

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2481248A (en) 1948-05-20 1949-09-06 Gen Motors Corp Engine starting apparatus
US2660891A (en) 1951-03-05 1953-12-01 Bendix Aviat Corp Engine starter drive
US2655048A (en) 1952-08-11 1953-10-13 Bendix Aviat Corp Engine starter drive
FR2572137B1 (fr) * 1984-10-18 1987-01-23 Paris & Du Rhone Lanceur de demarreur electrique sans contacteur
JP2949899B2 (ja) * 1991-04-24 1999-09-20 株式会社デンソー 慣性飛込み式始動装置
FR2759119B1 (fr) 1997-02-06 1999-03-05 Valeo Equip Electr Moteur Demarreur de vehicule automobile comportant un lanceur perfectionne
DE102009060957B4 (de) 2009-12-30 2018-07-19 Seg Automotive Germany Gmbh Startvorrichtung für eine Brennkraftmaschine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
WO2012019900A1 (fr) 2012-02-16
CN103026052A (zh) 2013-04-03
EP2598746A1 (fr) 2013-06-05
DE102010038444B4 (de) 2019-05-09
HUE051926T2 (hu) 2021-03-29
DE102010038444A1 (de) 2012-02-02

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