WO2011107379A1 - Starter for an internal combustion engine - Google Patents

Starter for an internal combustion engine Download PDF

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Publication number
WO2011107379A1
WO2011107379A1 PCT/EP2011/052640 EP2011052640W WO2011107379A1 WO 2011107379 A1 WO2011107379 A1 WO 2011107379A1 EP 2011052640 W EP2011052640 W EP 2011052640W WO 2011107379 A1 WO2011107379 A1 WO 2011107379A1
Authority
WO
WIPO (PCT)
Prior art keywords
starter
pinion
pinion shaft
shaft
sleeve
Prior art date
Application number
PCT/EP2011/052640
Other languages
German (de)
French (fr)
Inventor
Rainer Stoeckl
Stephan Kaske
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
Priority to EP11707134.0A priority Critical patent/EP2542774B1/en
Priority to CN201180011716.6A priority patent/CN102782307B/en
Publication of WO2011107379A1 publication Critical patent/WO2011107379A1/en

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
    • F02N15/06—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
    • 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
    • F02N15/025—Gearing between starting-engines and started engines; Engagement or disengagement thereof the starter comprising an intermediate clutch of the friction 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
    • F02N15/043—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
    • F02N15/062—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
    • F02N15/02—Gearing between starting-engines and started engines; Engagement or disengagement thereof
    • F02N15/04—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears
    • F02N15/06—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears the toothed gears being moved by axial displacement
    • F02N15/067—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears the toothed gears being moved by axial displacement the starter comprising an electro-magnetically actuated lever
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N15/00—Other power-operated starting apparatus; Component parts, details, or accessories, not provided for in, or of interest apart from groups F02N5/00 - F02N13/00
    • F02N15/02—Gearing between starting-engines and started engines; Engagement or disengagement thereof
    • F02N15/04—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears
    • F02N15/06—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
    • F02N2015/061—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 said axial displacement being limited, e.g. by using a stopper

Definitions

  • the invention relates to a starter for an internal combustion engine according to the preamble of claim 1.
  • PRIOR ART DE 38 08 673 A1 discloses an electric starter for an internal combustion engine which has a starter pinion on a pinion shaft which is to be brought into engagement with a ring gear of an internal combustion engine.
  • the pinion shaft is slidably connected via a clutch with an armature shaft of an electric motor and is driven in rotation by this.
  • the clutch Upon actuation of the clutch via an engagement relay, the pinion shaft is axially displaced, whereby the starter pinion on the pinion shaft engages with the ring gear of the internal combustion engine.
  • the starter pinion To ensure that when the starter pinion meshes with the ring gear of the internal combustion engine, the starter pinion retains its axial position on the pinion shaft, the position of the starter pinion on the pinion shaft must be fixed by means of suitable measures.
  • the invention has for its object to fix the position of a starter pinion on the pinion shaft of a starter with simple design measures.
  • the starter according to the invention for example a freely ejecting starter, is electrically driven and used to start an internal combustion engine.
  • the pinion shaft is a carrier of a starter pinion, which comes in a feed movement into engagement with a ring gear of the internal combustion engine.
  • the axial feed movement of the pinion shaft is usually triggered by an engagement relay, upon actuation of which an engagement lever advances the pinion shaft axially into the engagement position between the starter pinion and the ring gear of the internal combustion engine.
  • a switching contact is usually closed and the starter motor is switched on, which as a rule drives the pinion shaft via a gear, for example a planetary gear.
  • a stop device is provided. Furthermore, according to the invention for securing the starter pinion on the pinion shaft, a further stop means is provided which comprises a securing sleeve, which is designed as a collar sleeve and having a radially projecting collar which forms a stop for the starter pinion, which rests on the pinion shaft.
  • the securing sleeve is inserted into the end face of the pinion shaft, which is designed as a hollow shaft at least in the frontal section of the pinion shaft.
  • Locking sleeve projects radially beyond the lateral surface of the pinion shaft and forms the stop for the starter pinion seated on the pinion shaft.
  • This embodiment has the advantage that it is possible to dispense with the blasting and retaining rings customary in the prior art, which form the stop device on the pinion shaft. As a result, a reduction of the components required for the stop device is achieved.
  • Another advantage lies in the circumferential, closed shape of the locking sleeve, whereby the locking sleeve is insensitive to speed.
  • Another advantage is the internal arrangement of the locking sleeve on the end face of the pinion shaft designed as a hollow shaft, so that an arrangement of the stop means on the outer surface of the pinion shaft omitted and the pinion shaft can be made axially shorter. In addition, no grooves for receiving a securing ring or the like must be introduced into the outer circumferential surface of the pinion shaft.
  • the pinion shaft is not continuous, but only in the region of the front side designed as a hollow shaft into which the securing sleeve is inserted.
  • the pinion shaft is designed continuously as a hollow shaft.
  • the securing sleeve forms in an advantageous embodiment at the same time a bearing bush for a drive shaft, which is accommodated in the pinion shaft.
  • the radially projecting collar of the locking sleeve is located on the front side of the pinion shaft directly.
  • the collar projects radially beyond the lateral surface of the pinion shaft and forms an axial stop for the end face of the starter pinion, which is seated on the pinion shaft.
  • both versions come into consideration, in which the end face of the starter pinion forms a flat disc on which the collar rests in stop position, as well as versions with an introduced into the face of the starter pinion ring groove for receiving the cantilever collar of the locking sleeve;
  • the last-mentioned embodiment has the advantage that the collar of the securing sleeve engaging in the annular groove permits an axially smaller design of the starter.
  • annular shoulder is formed on the inner wall of the pinion shaft, against which an axial end face of the securing sleeve.
  • the annular shoulder forms a shoulder on which the securing sleeve is axially supported.
  • connection between the locking sleeve and pinion shaft can be positive, force and / or material fit.
  • latching elements can be formed on the outer wall of the locking sleeve and the inner wall of the pinion shaft, which are latched into each other with inserted locking sleeve; This is a positive or non-positive connection.
  • the latching elements are formed, for example, as protruding latching lugs and latching recesses which latch into one another in the inserted position of the securing sleeve.
  • FIG. 1 shows a starter for an internal combustion engine in section, with a pinion shaft, which is a starter pinion carrier, which is secured via a locking sleeve axially on the lateral surface of the pinion shaft,
  • Fig. 2 shows a further illustration of a starter for an internal combustion engine, wherein the securing sleeve rests against an annular shoulder on the inner wall of the pinion shaft.
  • the starter 1 shown in FIGS. 1 and 2 is used to start an internal combustion engine and has a pinion shaft 2, which is driven by a motor driven by a motor driven, not shown in the figures drive shaft.
  • the pinion shaft 2 is in the region of its free end side carrier of a starter pinion 3, which is designed as a separate, independent component and is seated on the lateral surface of the pinion shaft 2 and rotatably connected to the pinion shaft.
  • the pinion shaft 2 is axially advanced, whereupon the starter pinion 3, which is provided with external teeth 4, comes into meshing engagement with a toothed ring of the internal combustion engine.
  • the internal combustion engine is made to run.
  • the axial position of the starter pinion 3 on the lateral surface of the pinion shaft 2 is secured on the one hand via a locking ring 5 and the other via a locking sleeve 6.
  • the securing ring 5 is formed for example as a snap ring and pushed onto the lateral surface of the pinion shaft 2. This has an outer, radially uplifting paragraph on which the locking ring 5 is applied.
  • the starter pinion 3 is supported axially on the retaining ring 5.
  • the locking sleeve 6 On the securing ring 5 opposite, axially outer side is the locking sleeve 6, which has a cylindrical portion 7 and a radially projecting collar, which has a stop for the Star 3 forms whose axial end face rests on the collar 8.
  • the pinion shaft 2 is designed as a hollow shaft, the cylindrical portion 7 of the locking sleeve 6 is pressed into the pinion shaft 2, whereby a secure fit of the locking sleeve is provided within the pinion shaft.
  • the pinion shaft 2 including starter pinion 3 must be axially spun out and at the same time be controlled with a rotational movement. This is done via an engagement relay, which exerts a force on a driver 9 via an engagement lever, which is connected to the pinion shaft 2.
  • the pinion shaft 2 is connected via a helical thread 10 designed as an internal thread to the drive shaft, so that upon actuation of the engagement relay, the pinion shaft 2 executes both a feed movement and a rotational movement relative to the drive shaft.
  • the engagement relay is a
  • Pinion shaft 2 via a spring 1 1 Ltd., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc., Inc.
  • the securing sleeve 6 in the pinion shaft 2 modifications.
  • the cylindrical portion 7 of the locking sleeve 6 is relatively short.
  • the inwardly projecting end face of the cylindrical portion 7 abuts against an annular shoulder 12 on the inner wall of the pinion shaft 2, so that the annular shoulder 12 forms a stop for the securing sleeve 6.
  • the locking elements are designed for example as locking lugs and recesses. Due to the locking of the locking elements 13 is sufficient in principle a shorter axial length of the cylindrical portion 7.
  • the cylindrical portion 7 is additionally pressed into the pinion shaft 2.
  • annular shoulder 14 is formed, in which the radially projecting collar 8 of the locking sleeve 6 protrudes.
  • the starter pinion 3 is subjected to a force of force axially by a spring element 15, which is supported on the housing of the starter and presses the starter pinion 3 against the collar 8 of the securing sleeve.

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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)

Abstract

A starter for an internal combustion engine has a pinion shaft which is mounted so as to be movable relative to a drive shaft and which bears a starter pinion. To secure the starter pinion axially on the pinion shaft, a securing sleeve is inserted into the end side of the pinion shaft, wherein the securing sleeve has a radially projecting collar which forms an abutment for the starter pinion.

Description

Beschreibung  description
Titel title
Starter für eine Brennkraftmaschine Die Erfindung bezieht sich auf einen Starter für eine Brennkraftmaschine nach dem Oberbegriff des Anspruches 1.  The invention relates to a starter for an internal combustion engine according to the preamble of claim 1.
Stand der Technik Aus der DE 38 08 673 A1 ist ein elektrischer Starter für eine Brennkraftmaschine bekannt, der auf einer Ritzelwelle ein Starterritzel aufweist, welches mit einem Zahnkranz einer Brennkraftmaschine in Eingriff zu bringen ist. Die Ritzelwelle ist über eine Kupplung verschieblich mit einer Ankerwelle eines Elektromotors verbunden und wird von dieser rotierend angetrieben. Bei Betätigung der Kupplung über ein Einrückrelais wird die Ritzelwelle axial verschoben, wodurch das Starterritzel auf der Ritzelwelle in Eingriff mit dem Zahnkranz der Brennkraftmaschine gelangt. PRIOR ART DE 38 08 673 A1 discloses an electric starter for an internal combustion engine which has a starter pinion on a pinion shaft which is to be brought into engagement with a ring gear of an internal combustion engine. The pinion shaft is slidably connected via a clutch with an armature shaft of an electric motor and is driven in rotation by this. Upon actuation of the clutch via an engagement relay, the pinion shaft is axially displaced, whereby the starter pinion on the pinion shaft engages with the ring gear of the internal combustion engine.
Um sicherzustellen, dass beim Einspuren des Starterritzels in den Zahnkranz der Brennkraftmaschine das Starterritzel seine axiale Position auf der Ritzelwelle behält, muss die Position des Starterritzels auf der Ritzelwelle über geeignete Maßnahmen fixiert werden. To ensure that when the starter pinion meshes with the ring gear of the internal combustion engine, the starter pinion retains its axial position on the pinion shaft, the position of the starter pinion on the pinion shaft must be fixed by means of suitable measures.
Offenbarung der Erfindung Disclosure of the invention
Der Erfindung liegt die Aufgabe zugrunde, mit einfachen konstruktiven Maßnahmen die Position eines Starterritzels auf der Ritzelwelle eines Starters zu fixieren. The invention has for its object to fix the position of a starter pinion on the pinion shaft of a starter with simple design measures.
Diese Aufgabe wird erfindungsgemäß mit den Merkmalen des Anspruches 1 ge- löst. Die Unteransprüche geben zweckmäßige Weiterbildungen an. Der erfindungsgemäße Starter, beispielsweise ein frei ausstoßender Starter, wird elektrisch angetrieben und zum Starten eines Verbrennungsmotors eingesetzt. Die Ritzelwelle ist Träger eines Starterritzels, welche bei einer Vorschubbewegung in Eingriff mit einem Zahnkranz der Brennkraftmaschine gelangt. Die axiale Vorschubbewegung der Ritzelwelle wird üblicherweise über ein Einrückrelais ausgelöst, bei dessen Betätigung ein Einrückhebel die Ritzelwelle axial in die Einrückposition zwischen Starterritzel und Zahnkranz der Brennkraftmaschine vorschiebt. Mit dem Erreichen der Einrück- bzw. Eingriffsposition wird üblicherweise ein Schaltkontakt geschlossen und der Startermotor eingeschaltet, welcher in der Regel über ein Getriebe, beispielsweise ein Planetengetriebe, die Ritzelwelle antreibt. This object is achieved according to the invention with the features of claim 1. The dependent claims indicate expedient developments. The starter according to the invention, for example a freely ejecting starter, is electrically driven and used to start an internal combustion engine. The pinion shaft is a carrier of a starter pinion, which comes in a feed movement into engagement with a ring gear of the internal combustion engine. The axial feed movement of the pinion shaft is usually triggered by an engagement relay, upon actuation of which an engagement lever advances the pinion shaft axially into the engagement position between the starter pinion and the ring gear of the internal combustion engine. When the engagement or engagement position is reached, a switching contact is usually closed and the starter motor is switched on, which as a rule drives the pinion shaft via a gear, for example a planetary gear.
Zur Begrenzung der axialen Vorschubbewegung der Ritzelwelle ist vorteilhaft eine Anschlagseinrichtung vorgesehen. Desweiteren ist erfindungsgemäß zur Si- cherung des Starterritzels auf der Ritzelwelle eine weitere Anschlagseinrichtung vorgesehen, die eine Sicherungshülse umfasst, welche als Bundhülse ausgeführt ist und einen radial auskragenden Bund aufweist, der einen Anschlag für das Starterritzel bildet, das auf der Ritzelwelle aufsitzt. Die Sicherungshülse ist in die Stirnseite der Ritzelwelle eingeführt, welche zumindest im stirnseitigen Abschnitt der Ritzelwelle als Hohlwelle ausgebildet ist. Der radial auskragende Bund derTo limit the axial feed movement of the pinion shaft advantageously a stop device is provided. Furthermore, according to the invention for securing the starter pinion on the pinion shaft, a further stop means is provided which comprises a securing sleeve, which is designed as a collar sleeve and having a radially projecting collar which forms a stop for the starter pinion, which rests on the pinion shaft. The securing sleeve is inserted into the end face of the pinion shaft, which is designed as a hollow shaft at least in the frontal section of the pinion shaft. The radially projecting collar of
Sicherungshülse steht radial über die Mantelfläche der Ritzelwelle über und bildet den Anschlag für das auf der Ritzelwelle aufsitzende Starterritzel. Locking sleeve projects radially beyond the lateral surface of the pinion shaft and forms the stop for the starter pinion seated on the pinion shaft.
Diese Ausführung hat den Vorteil, dass auf die im Stand der Technik üblichen Spreng- und Halteringe, welche die Anschlagseinrichtung auf der Ritzelwelle bilden, verzichtet werden kann. Hierdurch wird eine Reduzierung der für die Anschlagseinrichtung erforderlichen Bauteile erzielt. Ein weiterer Vorteil liegt in der umlaufenden, geschlossenen Form der Sicherungshülse, wodurch die Sicherungshülse drehzahlunempfindlich wird. Ein weiterer Vorteil ist die innen liegende Anordnung der Sicherungshülse über die Stirnseite der als Hohlwelle ausgebildeten Ritzelwelle, so dass eine Anordnung der Anschlagseinrichtung auf der äußeren Mantelfläche der Ritzelwelle entfallen und die Ritzelwelle axial kürzer ausgeführt sein kann. Zudem müssen in die äußere Mantelfläche der Ritzelwelle keine Nuten zur Aufnahme eines Sicherungsrings oder dergleichen eingebracht wer- den. Grundsätzlich ist es für die Aufnahme der Sicherungshülse ausreichend, dass die Ritzelwelle nicht durchgehend, sondern lediglich im Bereich der Stirnseite als Hohlwelle ausgeführt ist, in die die Sicherungshülse einführbar ist. Vorteilhafterweise ist aber die Ritzelwelle durchgehend als Hohlwelle ausgeführt. This embodiment has the advantage that it is possible to dispense with the blasting and retaining rings customary in the prior art, which form the stop device on the pinion shaft. As a result, a reduction of the components required for the stop device is achieved. Another advantage lies in the circumferential, closed shape of the locking sleeve, whereby the locking sleeve is insensitive to speed. Another advantage is the internal arrangement of the locking sleeve on the end face of the pinion shaft designed as a hollow shaft, so that an arrangement of the stop means on the outer surface of the pinion shaft omitted and the pinion shaft can be made axially shorter. In addition, no grooves for receiving a securing ring or the like must be introduced into the outer circumferential surface of the pinion shaft. Basically, it is sufficient for receiving the securing sleeve, that the pinion shaft is not continuous, but only in the region of the front side designed as a hollow shaft into which the securing sleeve is inserted. Advantageously, however, the pinion shaft is designed continuously as a hollow shaft.
Die Sicherungshülse bildet in einer vorteilhaften Ausführung zugleich eine Lagerbuchse für eine Antriebswelle, die in der Ritzelwelle aufgenommen ist. The securing sleeve forms in an advantageous embodiment at the same time a bearing bush for a drive shaft, which is accommodated in the pinion shaft.
Gemäß einer zweckmäßigen Ausführung liegt der radial auskragende Bund der Sicherungshülse an der Stirnseite der Ritzelwelle unmittelbar an. Der Bund steht radial über die Mantelfläche der Ritzelwelle über und bildet einen axialen Anschlag für die Stirnseite des Starterritzels, welches auf der Ritzelwelle aufsitzt. Hierbei kommen sowohl Ausführungen in Betracht, in denen die Stirnseite des Starterritzels eine ebene Scheibe bildet, an der der Bund in Anschlagsposition anliegt, als auch Ausführungen mit einer in die Stirnseite des Starterritzels eingebrachten Ringnut zur Aufnahme des auskragenden Bundes der Sicherungshülse; die letztgenannte Ausführung hat den Vorteil, dass der in die Ringnut eingreifende Bund der Sicherungshülse eine axial kleiner bauende Ausführung des Starters erlaubt. According to an expedient embodiment of the radially projecting collar of the locking sleeve is located on the front side of the pinion shaft directly. The collar projects radially beyond the lateral surface of the pinion shaft and forms an axial stop for the end face of the starter pinion, which is seated on the pinion shaft. In this case, both versions come into consideration, in which the end face of the starter pinion forms a flat disc on which the collar rests in stop position, as well as versions with an introduced into the face of the starter pinion ring groove for receiving the cantilever collar of the locking sleeve; the last-mentioned embodiment has the advantage that the collar of the securing sleeve engaging in the annular groove permits an axially smaller design of the starter.
Gemäß einer weiteren zweckmäßigen Ausführung ist an der Innenwand der Ritzelwelle eine Ringschulter gebildet, an der eine axiale Stirnseite der Sicherungshülse anliegt. Die Ringschulter bildet einen Absatz, an welchem sich die Sicherungshülse axial abstützt. According to a further advantageous embodiment, an annular shoulder is formed on the inner wall of the pinion shaft, against which an axial end face of the securing sleeve. The annular shoulder forms a shoulder on which the securing sleeve is axially supported.
Die Verbindung zwischen Sicherungshülse und Ritzelwelle kann form-, kraft- und/oder stoffschlüssig erfolgen. So ist es beispielsweise möglich, die Sicherungshülse in die stirnseitige Ausnehmung in der Ritzelwelle einzupressen, wodurch eine kraftschlüssige Verbindung hergestellt wird. Zusätzlich oder alternativ können an der außen liegenden Wandung der Sicherungshülse und der Innenwand der Ritzelwelle Rastelemente gebildet sein, die bei eingesetzter Sicherungshülse ineinander verrastet sind; hierbei handelt es sich um eine form- bzw. kraftschlüssige Verbindung. Die Rastelemente sind beispielsweise als überstehende Rastnasen und Rastausnehmungen ausgebildet, die in eingesetzter Posi- tion der Sicherungshülse verrastend ineinandergreifen. Weitere Vorteile und zweckmäßige Ausführungen sind den weiteren Ansprüchen, der Figurenbeschreibung und den Zeichnungen zu entnehmen. Es zeigen: The connection between the locking sleeve and pinion shaft can be positive, force and / or material fit. For example, it is possible to press the locking sleeve into the frontal recess in the pinion shaft, whereby a non-positive connection is made. Additionally or alternatively, latching elements can be formed on the outer wall of the locking sleeve and the inner wall of the pinion shaft, which are latched into each other with inserted locking sleeve; This is a positive or non-positive connection. The latching elements are formed, for example, as protruding latching lugs and latching recesses which latch into one another in the inserted position of the securing sleeve. Further advantages and expedient embodiments can be taken from the further claims, the description of the figures and the drawings. Show it:
Fig. 1 einen Starter für eine Brennkraftmaschine im Schnitt, mit einer Ritzelwelle, welche Träger eines Starterritzels ist, das über eine Sicherungshülse axial auf der Mantelfläche der Ritzelwelle gesichert ist, 1 shows a starter for an internal combustion engine in section, with a pinion shaft, which is a starter pinion carrier, which is secured via a locking sleeve axially on the lateral surface of the pinion shaft,
Fig. 2 eine weitere Darstellung eines Starters für eine Brennkraftmaschine, bei der die Sicherungshülse an einer Ringschulter an der Innenwand der Ritzelwelle anliegt. Fig. 2 shows a further illustration of a starter for an internal combustion engine, wherein the securing sleeve rests against an annular shoulder on the inner wall of the pinion shaft.
In den Figuren sind gleiche Bauteile mit gleichen Bezugszeichen versehen. In the figures, the same components are provided with the same reference numerals.
Der in den Fig. 1 und 2 dargestellte Starter 1 dient zum Starten einer Brennkraftmaschine und weist eine Ritzelwelle 2 auf, welche über eine motorisch angetriebene, in den Figuren nicht dargestellte Antriebswelle von einem Elektromotor angetrieben wird. Die Ritzelwelle 2 ist im Bereich ihrer freien Stirnseite Träger eines Starterritzels 3, das als separates, eigenständiges Bauteil ausgeführt ist und auf der Mantelfläche der Ritzelwelle 2 aufsitzt und drehfest mit der Ritzelwelle verbunden ist. Zum Starten der Brennkraftmaschine wird die Ritzelwelle 2 axial vorgerückt, woraufhin das Starterritzel 3, welches mit einer Außenverzahnung 4 versehen ist, in Verzahnungseingriff mit einem Zahnkranz der Brennkraftmaschi- ne gelangt. Über eine Drehung der Ritzelwelle 2 sowie des Starterritzels 3, erzeugt über die Antriebswelle, wird die Brennkraftmaschine zum Laufen gebracht. The starter 1 shown in FIGS. 1 and 2 is used to start an internal combustion engine and has a pinion shaft 2, which is driven by a motor driven by a motor driven, not shown in the figures drive shaft. The pinion shaft 2 is in the region of its free end side carrier of a starter pinion 3, which is designed as a separate, independent component and is seated on the lateral surface of the pinion shaft 2 and rotatably connected to the pinion shaft. To start the internal combustion engine, the pinion shaft 2 is axially advanced, whereupon the starter pinion 3, which is provided with external teeth 4, comes into meshing engagement with a toothed ring of the internal combustion engine. About a rotation of the pinion shaft 2 and the starter pinion 3, generated via the drive shaft, the internal combustion engine is made to run.
Die axiale Position des Starterritzels 3 auf der Mantelfläche der Ritzelwelle 2 wird zum einen über einen Sicherungsring 5 und zum anderen über eine Sicherungshülse 6 gesichert. Der Sicherungsring 5 ist beispielsweise als Sprengring ausgebildet und auf die Mantelfläche der Ritzelwelle 2 aufgeschoben. Diese weist einen außen liegenden, sich radial erhebenden Absatz auf, an welchem der Sicherungsring 5 anliegt. Das Starterritzel 3 stützt sich axial an dem Sicherungsring 5 ab. The axial position of the starter pinion 3 on the lateral surface of the pinion shaft 2 is secured on the one hand via a locking ring 5 and the other via a locking sleeve 6. The securing ring 5 is formed for example as a snap ring and pushed onto the lateral surface of the pinion shaft 2. This has an outer, radially uplifting paragraph on which the locking ring 5 is applied. The starter pinion 3 is supported axially on the retaining ring 5.
Auf der dem Sicherungsring 5 gegenüberliegenden, axial außen liegenden Seite befindet sich die Sicherungshülse 6, die einen zylindrischen Abschnitt 7 sowie einen radial auskragenden Bund aufweist, welcher einen Anschlag für das Star- territzel 3 bildet, dessen axiale Stirnfläche am Bund 8 anliegt. Die Ritzelwelle 2 ist als Hohlwelle ausgeführt, der zylindrische Abschnitt 7 der Sicherungshülse 6 ist in die Ritzelwelle 2 eingepresst, wodurch ein sicherer Sitz der Sicherungshülse innerhalb der Ritzelwelle gegeben ist. Der radial auskragende, nach außen ge- stülpte Bund 8 der Sicherungshülse 6 liegt unmittelbar an der Stirnseite der Ritzelwelle 2 an und erstreckt sich radial bis in den Bereich des Starterritzels 3. On the securing ring 5 opposite, axially outer side is the locking sleeve 6, which has a cylindrical portion 7 and a radially projecting collar, which has a stop for the Star 3 forms whose axial end face rests on the collar 8. The pinion shaft 2 is designed as a hollow shaft, the cylindrical portion 7 of the locking sleeve 6 is pressed into the pinion shaft 2, whereby a secure fit of the locking sleeve is provided within the pinion shaft. The radially projecting collar 8 of the securing sleeve 6, which is turned outwards, bears directly against the end face of the pinion shaft 2 and extends radially as far as the area of the starter pinion 3.
Zum Starten der Brennkraftmaschine muss die Ritzelwelle 2 einschließlich Starterritzel 3 axial ausgespurt und zugleich mit einer Drehbewegung gesteuert wer- den. Dies erfolgt über ein Einrückrelais, das über einen Einrückhebel eine Kraft auf einen Mitnehmer 9 ausübt, der mit der Ritzelwelle 2 verbunden ist. Die Ritzelwelle 2 ist über ein als Innengewinde ausgeführtes Steilgewinde 10 mit der Antriebswelle verbunden, so dass bei einer Betätigung des Einrückrelais die Ritzelwelle 2 gegenüber der Antriebswelle sowohl eine Vorschubbewegung als auch eine Drehbewegung ausführt. Mit dem Betätigen des Einrückrelais wird einTo start the internal combustion engine, the pinion shaft 2 including starter pinion 3 must be axially spun out and at the same time be controlled with a rotational movement. This is done via an engagement relay, which exerts a force on a driver 9 via an engagement lever, which is connected to the pinion shaft 2. The pinion shaft 2 is connected via a helical thread 10 designed as an internal thread to the drive shaft, so that upon actuation of the engagement relay, the pinion shaft 2 executes both a feed movement and a rotational movement relative to the drive shaft. With the actuation of the engagement relay is a
Schaltkontakt geschlossen, woraufhin der elektrische Startermotor eingeschaltet wird, dessen Antriebsbewegung über ein Getriebe auf die Antriebswelle und von dieser über das Steilgewinde auf die Ritzelwelle 2 und damit auf das Starterritzel 5 übertragen wird. Nach dem Abschalten des Einrückrelais wird der Anlassvor- gang beendet, zugleich wird der elektrische Startermotor abgeschaltet und dieSwitching contact is closed, whereupon the electric starter motor is turned on, the drive movement is transmitted via a transmission to the drive shaft and from there via the coarse thread on the pinion shaft 2 and thus to the starter pinion 5. After the switch-off relay has been switched off, the starting process is stopped, at the same time the electric starter motor is switched off and the
Ritzelwelle 2 über eine Feder 1 1 wieder in ihre Ruhelage zurückverstellt. Pinion shaft 2 via a spring 1 1 zurückverstellt back to its rest position.
In Fig. 2 ist ein ähnlicher Starter 1 wie in Fig. 1 dargestellt, so dass bezüglich der Funktionsweise auf die obige Ausführung verwiesen wird. Im Vergleich zum ers- ten Ausführungsbeispiel weist die Sicherungshülse 6 in der Ritzelwelle 2 Modifikationen auf. Der zylindrische Abschnitt 7 der Sicherungshülse 6 ist verhältnismäßig kurz ausgebildet. Die nach innen einragende Stirnseite des zylindrischen Abschnitts 7 liegt an einer Ringschulter 12 an der Innenwand der Ritzelwelle 2 an, so dass die Ringschulter 12 einen Anschlag für die Sicherungshülse 6 bildet. Die sichere Halterung der Sicherungshülse 6 in der Ritzelwelle 2 erfolgt überIn Fig. 2, a similar starter 1 as shown in Fig. 1, so that reference is made with respect to the operation of the above embodiment. Compared to the first embodiment, the securing sleeve 6 in the pinion shaft 2 modifications. The cylindrical portion 7 of the locking sleeve 6 is relatively short. The inwardly projecting end face of the cylindrical portion 7 abuts against an annular shoulder 12 on the inner wall of the pinion shaft 2, so that the annular shoulder 12 forms a stop for the securing sleeve 6. The secure mounting of the locking sleeve 6 in the pinion shaft 2 via
Rastelemente 13 an der Innenwand der Ritzelwelle 2 bzw. der Außenwand des zylindrischen Abschnitts 7 der Sicherungshülse 6, wobei die Rastelemente 13 in der eingeschobenen Stellung der Sicherungshülse in der Rastposition stehen. Die Rastelemente sind beispielsweise als Rastnasen und Rastausnehmungen ausgeführt. Aufgrund der Verrastung der Rastelemente 13 genügt grundsätzlich eine kürzere axiale Länge des zylindrischen Abschnitts 7. Gegebenenfalls ist der zylindrische Abschnitt 7 zusätzlich in die Ritzelwelle 2 eingepresst. Locking elements 13 on the inner wall of the pinion shaft 2 and the outer wall of the cylindrical portion 7 of the locking sleeve 6, wherein the locking elements 13 are in the retracted position of the locking sleeve in the locking position. The locking elements are designed for example as locking lugs and recesses. Due to the locking of the locking elements 13 is sufficient in principle a shorter axial length of the cylindrical portion 7. Optionally, the cylindrical portion 7 is additionally pressed into the pinion shaft 2.
Auch an der Stirnseite des Starterritzels 3 ist eine Ringschulter 14 gebildet, in die der radial auskragende Bund 8 der Sicherungshülse 6 einragt. Also on the front side of the starter pinion 3, an annular shoulder 14 is formed, in which the radially projecting collar 8 of the locking sleeve 6 protrudes.
Das Starterritzel 3 wird axial von einem Federelement 15 kraftbeaufschlagt, das sich am Gehäuse des Starters abstützt und das Starterritzel 3 gegen den Bund 8 der Sicherungshülse drückt. The starter pinion 3 is subjected to a force of force axially by a spring element 15, which is supported on the housing of the starter and presses the starter pinion 3 against the collar 8 of the securing sleeve.

Claims

Ansprüche claims
1 . Starter für eine Brennkraftmaschine, mit einer gegenüber einer Antriebswelle des Starters (1 ) verschiebbar gelagerten Ritzelwelle (2), die Träger eines Starterritzels (3) ist, mit einer Anschlagseinrichtung zur axialen Sicherung des Starterritzels (3) auf der Ritzelwelle (2), dadurch gekennzeichnet, dass die Anschlagseinrichtung als Sicherungshülse (6) ausgeführt ist, die in die Stirnseite der zumindest stirnseitig als Hohlwelle ausgeführten Ritzelwelle (2) eingeführt ist, wobei die Sicherungshülse (6) einen radial auskragenden Bund (8) aufweist, der einen Anschlag für das Starterritzel (3) bildet. 1 . Starter for an internal combustion engine, with a relative to a drive shaft of the starter (1) slidably mounted pinion shaft (2), the carrier of a starter pinion (3), with a stop means for axially securing the starter pinion (3) on the pinion shaft (2), characterized in that the stop device is designed as a securing sleeve (6) which is introduced into the end face of the pinion shaft (2), which is designed as a hollow shaft, at least on the end side, wherein the securing sleeve (6) has a radially projecting collar (8), which has a stop for the Starter pinion (3) forms.
2. Starter nach Anspruch 1 , dadurch gekennzeichnet, dass der radial auskragende Bund (8) der Sicherungshülse (6) an der Stirnseite der Ritzelwelle (2) anliegt. 2. Starter according to claim 1, characterized in that the radially projecting collar (8) of the locking sleeve (6) rests against the end face of the pinion shaft (2).
3. Starter nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Sicherungshülse (6) in die Ritzelwelle (2) eingepresst ist. 3. Starter according to claim 1 or 2, characterized in that the securing sleeve (6) in the pinion shaft (2) is pressed.
4. Starter nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass an der Wandung der Sicherungshülse (6) und an der Innenwand der Ritzelwelle (2) Rastelemente (13) gebildet sind, die bei eingesetzter Sicherungshülse (6) ineinander verrastet sind. 4. Starter according to one of claims 1 to 3, characterized in that on the wall of the locking sleeve (6) and on the inner wall of the pinion shaft (2) locking elements (13) are formed, which are locked in one another with inserted locking sleeve (6).
5. Starter nach Anspruch 4, dadurch gekennzeichnet, dass die Rastelemente (13) als Rastnasen und Rastausnehmungen ausgebildet sind. 5. Starter according to claim 4, characterized in that the latching elements (13) are designed as latching lugs and latching recesses.
6. Starter nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass an der Innenwand der Ritzelwelle (2) eine Ringschulter (12) gebildet ist, an der eine Stirnseite der Sicherungshülse (6) anliegt. 6. Starter according to one of claims 1 to 5, characterized in that on the inner wall of the pinion shaft (2) an annular shoulder (12) is formed, against which an end face of the securing sleeve (6).
7. Starter nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass an dem Starterritzel (3) eine radial innen liegende Ringschulter (12) gebildet ist, in die der radial auskragende Bund (8) der Sicherungshülse (6) einragt. 7. Starter according to one of claims 1 to 6, characterized in that on the starter pinion (3) has a radially inner annular shoulder (12) is formed, in which the radially projecting collar (8) of the securing sleeve (6) protrudes.
8. Starter nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass das Starterritzel (3) auf der dem Bund (8) der Sicherungshülse (6) abgewandten Seite über einen Sicherungsring (5) axial auf der Ritzelwelle (2) gesichert ist. 8. Starter according to one of claims 1 to 7, characterized in that the starter pinion (3) on the collar (8) of the securing sleeve (6) facing away from a securing ring (5) axially on the pinion shaft (2) is secured.
PCT/EP2011/052640 2010-03-03 2011-02-23 Starter for an internal combustion engine WO2011107379A1 (en)

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EP11707134.0A EP2542774B1 (en) 2010-03-03 2011-02-23 Starter for combustion engine
CN201180011716.6A CN102782307B (en) 2010-03-03 2011-02-23 For the starter motor of internal-combustion engine

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DE102010002537A DE102010002537A1 (en) 2010-03-03 2010-03-03 Starter for an internal combustion engine
DE102010002537.2 2010-03-03

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DE (1) DE102010002537A1 (en)
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DE102016224489A1 (en) * 2015-12-22 2017-06-22 Robert Bosch Gmbh Starting device and method for mounting a starting device

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FR1457220A (en) * 1964-12-11 1966-10-28 Metabowerke Kg Drive mechanism in particular for power tools
JPS5355037U (en) * 1976-10-13 1978-05-11
JPS5892469U (en) * 1981-12-17 1983-06-22 三菱電機株式会社 Starter shock absorption mechanism
DE3808673A1 (en) 1987-03-12 1988-09-22 Mitsubishi Electric Corp Stop for the pinion of a starter motor
GB2256900A (en) * 1991-06-13 1992-12-23 Valeo Equip Electr Moteur Sealing an i.c.engine starter mechanism.
JPH0835472A (en) * 1994-07-22 1996-02-06 Sanshin Ind Co Ltd Engine starter

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FR2706537B1 (en) * 1993-06-09 1995-07-28 Valeo Equip Electr Moteur Starter launcher sealing device for internal combustion engine and method for implementing such a device.
JP3815446B2 (en) * 2003-03-11 2006-08-30 株式会社デンソー Starter
JP4155115B2 (en) * 2003-06-10 2008-09-24 株式会社デンソー Starter

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US959831A (en) * 1909-04-02 1910-05-31 Frederick Alexander Pencil-sharpener.
FR1457220A (en) * 1964-12-11 1966-10-28 Metabowerke Kg Drive mechanism in particular for power tools
JPS5355037U (en) * 1976-10-13 1978-05-11
JPS5892469U (en) * 1981-12-17 1983-06-22 三菱電機株式会社 Starter shock absorption mechanism
DE3808673A1 (en) 1987-03-12 1988-09-22 Mitsubishi Electric Corp Stop for the pinion of a starter motor
GB2256900A (en) * 1991-06-13 1992-12-23 Valeo Equip Electr Moteur Sealing an i.c.engine starter mechanism.
JPH0835472A (en) * 1994-07-22 1996-02-06 Sanshin Ind Co Ltd Engine starter

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CN102782307B (en) 2015-08-26
CN102782307A (en) 2012-11-14
EP2542774B1 (en) 2016-01-27
EP2542774A1 (en) 2013-01-09
DE102010002537A1 (en) 2011-09-08

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