EP0518878A1 - Appareil de demarrage a dispositif de freinage. - Google Patents

Appareil de demarrage a dispositif de freinage.

Info

Publication number
EP0518878A1
EP0518878A1 EP91903883A EP91903883A EP0518878A1 EP 0518878 A1 EP0518878 A1 EP 0518878A1 EP 91903883 A EP91903883 A EP 91903883A EP 91903883 A EP91903883 A EP 91903883A EP 0518878 A1 EP0518878 A1 EP 0518878A1
Authority
EP
European Patent Office
Prior art keywords
rotor
starting device
pinion
output shaft
starting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP91903883A
Other languages
German (de)
English (en)
Other versions
EP0518878B1 (fr
Inventor
Werner Rometsch
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 EP0518878A1 publication Critical patent/EP0518878A1/fr
Application granted granted Critical
Publication of EP0518878B1 publication Critical patent/EP0518878B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • F02N15/003—Starters comprising a brake mechanism
    • 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
    • F02N15/043—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
    • F02N15/067—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
    • 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
    • Y10T74/132—Separate power mesher
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/13—Machine starters
    • Y10T74/131—Automatic
    • Y10T74/137—Reduction gearing

Definitions

  • the invention relates to a starter device with an output shaft which carries a pinion for driving a toothed ring of an internal combustion engine and is driven by a rotor and which is axially displaceably mounted for the engagement or disengagement process of the pinion.
  • the starting device according to the invention with the features mentioned in the main claim has the advantage that long run-out times of the pinion are prevented when the starting process is ended.
  • a braking effect is automatically triggered by the output shaft, which moves back into the disengagement position, which brakes the rotor of the drive and thus also the pinion.
  • the teaching according to the invention proposes that the return movement of the output shaft is transmitted to the rotor in such a way that the latter is also axially displaced and thereby hits the braking surface.
  • Such braking is particularly effective in gearbox starting devices, since the rotor represents an element to which a relatively low torque is assigned. Thus, even relatively small braking forces lead to a great effect.
  • the output shaft comes against a resilient contact member of the rotor.
  • This resilient support between the output shaft and the rotor is on the one hand tolerances and nevertheless leads to the transmission of axial forces to the rotor.
  • the contact member is arranged coaxially with the rotor. In this way, unbalance is avoided and even small moments of inertia are achieved.
  • a compression spring is preferably arranged between the contact member and the rotor.
  • the contact member is guided axially displaceably in an axial bore of a rotor shaft.
  • the contact element can be designed as a thrust bolt. This preferably has a circular cross section, its central axis extending coaxially to the rotor axis.
  • a good braking effect can be achieved if the braking surface is formed on a brake disc. This is preferably located between the end face of a commutator assigned to the rotor and a housing area of the starting device.
  • the housing area is formed by a contact surface surrounding a rotor bearing.
  • FIG. 2 shows a detail from the illustration in FIG. 1, with a single-track position being assumed.
  • FIG. 1 shows a longitudinal section through a turning device 1.
  • This has a housing 2, in which a direct current motor 3 and an engagement relay 4 are accommodated.
  • the DC motor 3 has a rotor 5, which acts on an output shaft 6, on the end 7 of which a pinion 8 is arranged in a rotationally fixed manner.
  • the pinion 8 advances into the position 9 shown in dashed lines in FIG. 1 and thereby engages in a ring gear 10 of the internal combustion engine.
  • the axial shifting of the pinion into position 9 is brought about by the engagement relay 4. This will be discussed in more detail below.
  • the rotor 5 is provided with a commutator 11, to the segments 12 of which a rotor winding 13 is connected.
  • the commutator 11 interacts with a carbon brush arrangement 14.
  • a stator 15 with a stator winding 16 is provided, which lies opposite the rotor 5 with a small air gap.
  • the rotor 5 has a rotor shaft 17 which is supported at one end 18 in a needle bearing 19 and is covered by a housing cap 20.
  • the the other end of the rotor shaft 17 has a central receiving bore 22 extending from its end face 21, into which one end 23 of the output shaft 6 engages.
  • the other end of the rotor shaft 17 is mounted on the end 23 of the output shaft 6 via a needle bearing 31 which is arranged in the receiving bore 22.
  • the lateral surface 24 of the end 25 of the rotor shaft 17 provided with the receiving bore 22 is designed as a sun gear 26 which meshes with planet gears 27 which are arranged on a planet carrier 28 (only one planet gear 27 is shown in FIG. 1). .
  • the planet gears 27 are arranged on bearing pins 29 with the interposition of Nadella ⁇ ger.
  • the planet gears 27 mesh with a ring gear 30 provided with internal teeth, which is arranged in a stationary manner in the housing 2.
  • the end 23 of the output shaft 6 is supported by a needle bearing 37 in the receiving bore of the axial web 39.
  • the freewheel outer ring 35 is held by a deep groove ball bearing 38, which is arranged on the axial web 39 and, on the other hand, is supported in the housing 2 (fixed bearing).
  • a cylindrical roller bearing 33 is provided in the opposite end region 32 of the output shaft 6, held by the housing 2 — to which a sealing ring 34 is connected upstream.
  • the cylindrical roller bearing 33 guides the output shaft 6 both in the axial and in the radial direction.
  • the planet carrier 28 is axially connected to a freewheel outer ring 35 via screws 36.
  • the freewheel outer ring 35 belongs to a freewheel device 40 which is designed as a roller freewheel. It has spring-loaded rollers 41 which interact with an inner ring 42 of the freewheel device 40.
  • the inner ring 42 is connected to the output shaft 6 via a steep thread 43.
  • the output shaft 6 has a groove 44, in which a snap ring 45 is arranged.
  • the snap ring 45 forms a stop which, in the event of an axial displacement of the output shaft 6 to be described in greater detail, cooperates with a step 46 of the inner ring 42.
  • a retaining ring 47 which has a radial collar 48, is attached to the output shaft 6.
  • a snap ring 50 which supports a disk 51, is located in a groove 49 of the retaining ring 47.
  • An annular channel 52 is thus formed between the disk 51 and the radial collar 48.
  • the pinion 8 is rotatably but axially displaceably mounted. It is acted upon by a helical compression spring 54. This is preloaded when a tooth-on-tooth position results when the pinion 8 is engaged in the ring gear 10.
  • the engagement relay 4 has a stationary relay winding 61 which interacts with an armature 62.
  • the armature 62 is axially displaceably mounted and is urged into the position shown in FIG. 1 by a return spring 112 in the form of a helical compression spring when the engagement relay 4 is not energized.
  • the axis 63 has a contact element 66 at its one end region 65 that can cooperate with electrical connections 67.
  • the armature 62 is connected to a plunger 68 which projects into a housing space 69 of the housing 2.
  • the plunger 68 interacts with an engagement lever 70 designed as a double lever, which is pivotably mounted approximately in its central region by means of a cross bolt 71.
  • the cross pin 71 is held on a housing-side arm 72.
  • the lower end 73 of the engagement lever 70 is provided with a projection 74 which engages in the ring channel 52.
  • a driving head 76 is formed at the other end 75 of the engagement lever 70.
  • a locking device 77 which is essentially formed by a bow spring 80, a control sleeve 108, a ring 117 and springs 99 and 112, prevents the pinion 8 from inadvertently moving in the direction of the ring gear 10 of the internal combustion engine, since this could damage the parts.
  • This unintentional axial movement could occur without a locking device 77 in that braking moments, which occur, for example, due to the bearings and shaft sealing rings, move the output shaft 6 into the engagement position, that is to say the return spring forces are smaller than the axial force components occurring on the high-helix thread.
  • the steep thread 43 allows an axial displacement of the output shaft 6 by the dimension a.
  • the receiving bore 22 in the rotor shaft 17 of the rotor 5 ends in an axial bore 131 in which a resilient contact member 132 is accommodated.
  • the contact member 132 is formed as a thrust bolt 133. This has a circular cross section which is dimensioned to the diameter of the axial bore 131 in such a way that the thrust bolt 133 is guided in the axial bore 131 in an axially displaceable manner.
  • a compression spring 135 designed as a helical spring, that is to say that one end 136 of the compression spring 135 is supported on the starting bolt 133 and the other end 137 of the compression spring 135 lies on the bottom 138 of the axial bore 131 designed as a blind bore.
  • the lateral surface 139 of the thrust bolt 133 has a radial collar 140 in the support area of the compression spring 135.
  • the remaining area of the lateral surface 139 faces the axial bore 131 at a distance from the inner wall 141.
  • the distance is dimensioned so that a snap ring 143 can be received there, which is inserted into an annular groove 142 formed on the inner wall 141.
  • the snap ring 143 forms a stop for the Thrust bolt 133; that is to say, when the starting bolt 133 is not acted on, it limits the axial movement of the starting bolt 133 caused by the compression spring 135.
  • the side 144 of the starting bolt 133 facing the output shaft 6 has a central starting elevation 145.
  • the arrangement is designed in such a way that in the track position of the output shaft 6 shown in FIG. As a result, the compression spring 135 is compressed accordingly, so that a reaction force is exerted on the rotor 5 of the direct current motor 3.
  • the displacement path c is approx. 2 to 3 mm.
  • the rotor shaft 17 is guided in a rotor bearing 147, which is designed as a needle bearing 19.
  • a brake disc 151 with a braking surface 150 is arranged between the end face 148 of the rotor 5 or commutator 11 and a housing region 149 of the starting device 1.
  • the housing region 149 is formed by a contact surface 152 surrounding the rotor bearing 147.
  • the starting device 1 operates as follows:
  • the engagement relay 4 is energized via a start switch. This leads to the armature 62 moving to the right (FIG. 1), where runs through the control sleeve 108 against the stirrup spring 80 in such a way that the latter is radially expanded. As a result, the ring 117 is released. A relative movement between the control sleeve 108 and the ring 117 is possible while consuming the free travel b because the latter is axially displaceably mounted on the control sleeve 108. If the bow spring 80 assumes its spread position, the free travel b is used up, that is to say the left side of the driving head 76 is carried along by the control sleeve 108.
  • the engagement lever 70 carries out a pivoting movement clockwise around the transverse pin 71.
  • the projection 74 shifts the output shaft 6 in the direction of the ring gear 10, as a result of which the pinion 8 can engage in the toothing of the ring gear 10.
  • the engagement forces ensure that the pinion 8 now moves completely into the ring gear 10, the output shaft 6 extending axially to the end position due to the steep thread 43, so that — as a result — the one shown in FIG. 1 with dashed lines Position 9 is taken by the pinion 8.
  • the engagement relay 4 drops out.
  • the return movement is supported by the return springs 64 and 112.
  • the ring 117 then comes against the driving head 76 of the engagement lever 70, so that the engagement lever 70 pivots counterclockwise, whereby the pinion 8 is returned to the position shown in solid line in FIG. Since in the final stage of the starting process the internal combustion engine now in operation "overtakes" the rotation of the pinion 8, the disengagement process is supported by the steep thread 43.
  • the bow spring 80 is also in the starting position again, that is to say it secures the ring 117, so that the engagement lever 70 is in the position shown in FIG. 1 is fixed. This prevents unintentional axial displacement of the output shaft 6.

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)
  • Braking Arrangements (AREA)

Abstract

Un appareil de démarrage comprend un arbre mené qui porte un pignon de commande d'une couronne dentée d'un moteur à combustion interne et qui est entraîné par un rotor. Pour permettre l'enclenchement ou le déclenchement du pignon, l'arbre est monté de manière axialement mobile. Afin de pouvoir freiner rapidement le pignon, l'arbre mené (6) agit axialement sur le rotor (5) dans la position de déclenchement du pignon de façon à pousser le rotor contre une surface de freinage (150).
EP91903883A 1990-03-03 1991-02-22 Appareil de demarrage a dispositif de freinage Expired - Lifetime EP0518878B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4006797A DE4006797A1 (de) 1990-03-03 1990-03-03 Andrehvorrichtung mit bremseinrichtung
DE4006797 1990-03-03
PCT/DE1991/000140 WO1991014094A1 (fr) 1990-03-03 1991-02-22 Appareil de demarrage a dispositif de freinage

Publications (2)

Publication Number Publication Date
EP0518878A1 true EP0518878A1 (fr) 1992-12-23
EP0518878B1 EP0518878B1 (fr) 1994-10-05

Family

ID=6401408

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91903883A Expired - Lifetime EP0518878B1 (fr) 1990-03-03 1991-02-22 Appareil de demarrage a dispositif de freinage

Country Status (11)

Country Link
US (1) US5321987A (fr)
EP (1) EP0518878B1 (fr)
JP (1) JPH05504808A (fr)
AU (1) AU638802B2 (fr)
BR (1) BR9106109A (fr)
CZ (1) CZ280180B6 (fr)
DE (2) DE4006797A1 (fr)
ES (1) ES2063495T3 (fr)
HU (1) HU208725B (fr)
RU (1) RU2048653C1 (fr)
WO (1) WO1991014094A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5953955A (en) * 1994-11-24 1999-09-21 Nippondenso Co., Ltd. Starter with planetary gear speed reduction mechanism
DE19911161C2 (de) * 1999-03-11 2003-10-30 Bosch Gmbh Robert Elektromechanisches Vor- und Rückspurprinzip für Koaxialstarter
RU2451206C2 (ru) * 2009-03-10 2012-05-20 Федеральное государственное образовательное учреждение высшего профессионального образования "Военный авиационный инженерный университет" (г. Воронеж) Министерства обороны Российской Федерации Механизм включения стартера
DE102009027859B4 (de) * 2009-07-21 2019-12-24 Seg Automotive Germany Gmbh Elektrische Maschine mit kommutatorseitigem Lager
FR2990729B1 (fr) * 2012-05-16 2015-11-13 Valeo Equip Electr Moteur Demarreur a lanceur muni d'une roue libre immobile en translation
CN103388527B (zh) * 2013-07-30 2016-05-04 长城汽车股份有限公司 一种汽车发动机熄火后曲轴位置限定系统
CN106014748A (zh) * 2016-07-14 2016-10-12 上海法雷奥汽车电器系统有限公司 一种减速起动机

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1107059A (fr) * 1950-12-11 1955-12-28 Magneti Marelli Spa Perfectionnements aux démarreurs électriques pour moteurs
US2759363A (en) * 1952-04-21 1956-08-21 Leo F Phaneuf Switch control apparatus
US2777328A (en) * 1954-12-30 1957-01-15 Caterpillar Tractor Co Control for starter pinion engaging mechanism
DE2448069A1 (de) * 1974-10-09 1976-04-22 Bosch Gmbh Robert Andrehvorrichtung fuer brennkraftmaschinen
DE2460114A1 (de) * 1974-12-19 1976-06-24 Bosch Gmbh Robert Andrehvorrichtung fuer brennkraftmaschinen
GB2037373B (en) * 1978-11-10 1983-02-09 Hitachi Ltd Engine starter
US4412457A (en) * 1981-04-29 1983-11-01 General Motors Corporation In-line engine cranking motor drive having reduction gear set
FR2536466B1 (fr) * 1982-11-24 1986-11-14 Paris & Du Rhone Dispositif de freinage pour demarreur de moteur a combustion interne
JPS61106974A (ja) * 1984-10-30 1986-05-24 Nippon Denso Co Ltd 遊星歯車減速機構付スタ−タ
JPS63209448A (ja) * 1987-02-23 1988-08-31 Mitsubishi Electric Corp エンジン用スタ−タ装置
JPH01247762A (ja) * 1988-03-28 1989-10-03 Hitachi Ltd 遊星歯車減速機付スタータ

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9114094A1 *

Also Published As

Publication number Publication date
DE4006797A1 (de) 1991-09-12
HU208725B (en) 1993-12-28
CZ280180B6 (cs) 1995-11-15
ES2063495T3 (es) 1995-01-01
AU7240091A (en) 1991-10-10
BR9106109A (pt) 1993-02-24
DE59103176D1 (de) 1994-11-10
JPH05504808A (ja) 1993-07-22
HU9202826D0 (en) 1992-12-28
WO1991014094A1 (fr) 1991-09-19
US5321987A (en) 1994-06-21
HUT61612A (en) 1993-01-28
EP0518878B1 (fr) 1994-10-05
RU2048653C1 (ru) 1995-11-20
AU638802B2 (en) 1993-07-08

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