EP0489735B1 - Dispositif de demarrage pour moteurs a combustion interne - Google Patents

Dispositif de demarrage pour moteurs a combustion interne Download PDF

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Publication number
EP0489735B1
EP0489735B1 EP90906905A EP90906905A EP0489735B1 EP 0489735 B1 EP0489735 B1 EP 0489735B1 EP 90906905 A EP90906905 A EP 90906905A EP 90906905 A EP90906905 A EP 90906905A EP 0489735 B1 EP0489735 B1 EP 0489735B1
Authority
EP
European Patent Office
Prior art keywords
ball
disc
sphere
starting
recess
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.)
Expired - Lifetime
Application number
EP90906905A
Other languages
German (de)
English (en)
Other versions
EP0489735A1 (fr
Inventor
Martin Mayer
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 EP0489735A1 publication Critical patent/EP0489735A1/fr
Application granted granted Critical
Publication of EP0489735B1 publication Critical patent/EP0489735B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N15/00—Other power-operated starting apparatus; Component parts, details, or accessories, not provided for in, or of interest apart from groups F02N5/00 - F02N13/00
    • F02N15/02—Gearing between starting-engines and started engines; Engagement or disengagement thereof
    • F02N15/04—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears
    • F02N15/06—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
    • 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
    • F02N15/066—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 being of the coaxial type
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/13—Machine starters
    • 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
    • Y10T74/20—Control lever and linkage systems
    • Y10T74/20576—Elements
    • Y10T74/20636—Detents

Definitions

  • the invention is based on a starting device for internal combustion engines according to DE-PS 11 01 052.
  • a recess is formed on the free end face of the thrust member of the magnet armature, which is designed as a switching pin.
  • Rubber disks are inserted in the recess and covered by a steel disc also inserted in the recess.
  • a ball is loosely arranged on the steel disk and held in the recess by folded or caulked edge sections or by the entire caulked edge of the end face. It is disadvantageous that the engagement magnet must already be assembled before the edge or the edge portions of the switching bolt are turned over on the ball. Only then are the rubber washers or spring washers inserted into the recess, the steel washer placed over them and the ball put on.
  • the folding of the edge then takes place as "tolerance-precise caulking" on the ball.
  • the ball must be kept easy to move, which is made difficult by the constant pressure of the rubber washers or disc springs on the steel washer resting on the ball and requires complicated and therefore no longer economical measures for mass production to comply with the tolerances and thus the quality of the product.
  • US-A-4 285 550 describes a ball holder which is used to transport heavy loads e.g. over the floor of an airplane.
  • the balls are stored in separate holes in the floor.
  • the ball is spring-loaded, free of play between the holding device and a bearing.
  • the bearing is supported on a spring arrangement via a disk, the disk being resiliently supported on a shoulder of the holding device.
  • the invention is based on the object, in a starter device for internal combustion engines, to arrange the ball provided between the thrust member and the push rod on the thrust member in such a way that the disadvantages of the known design are avoided and a simple, safe and suitable for economical automated large-volume production is made possible.
  • the ball can be rotated without play and is free of friction and pressure from the bias of the spring arrangement. Another advantage is that the component-related tolerances can be more easily adhered to by fixing the ball in a sleeve-shaped section.
  • the holding device surrounds the ball as a cover cap and enables the ball to be accommodated with a precise tolerance in a simple manner, and that, in addition, the switching bolt having the ball together with the spring and holding device can be manufactured and tested as a prefabricated structural unit in an automated process and bearing surfaces has to enable the caulking of the preassembled switching pin in the electromagnet precisely and easily.
  • FIG. 1 shows a starting device for internal combustion engines
  • FIG. 2 shows a first exemplary embodiment of a prefabricated structural unit with a ball arranged on the thrust member together with the spring arrangement and holding device
  • FIG. 3 shows a view of the structural unit in the direction of arrow III in FIG. 2
  • FIG. 4 shows a second exemplary embodiment of the prefabricated structural unit.
  • the exemplary embodiments are partially shown in longitudinal section in FIGS. 1, 2 and 4.
  • a starter has a starter motor 1 with a hollow drive shaft 2 which carries an armature 3.
  • the drive shaft 2 is rotatably mounted in a bearing plate 4, which is fastened to the housing 5 of the starting motor 1.
  • a push rod 6 extends through the hollow drive shaft 2.
  • a starter pinion 7 is fastened on its end protruding from the drive shaft 2.
  • the starter pinion 7 is slidably mounted in a drive bearing 8 of the starter device. The push rod 6 can be moved together with the starter pinion 7 against the force of a return spring 9 with respect to the drive shaft 2.
  • the electromagnet 12 consists essentially of a base plate 13, in the middle of which a sleeve 14 forming the magnetic core of the electromagnet 12 sits together with the base plate 13.
  • the sleeve 14 is surrounded by a winding carrier 15, on which the excitation winding 16 of the electromagnet 12 consisting of pull-in and holding winding is arranged.
  • a magnet armature 17 is guided in the winding carrier 15.
  • a switching pin 18 serving as a thrust member is attached to the armature 17. It protrudes from the winding carrier 15 out and extends through the sleeve 14 forming the magnetic core into the hollow drive shaft 2.
  • the end of the switching pin 18 protruding into the hollow drive shaft 2 carries a head 19 (FIG. 2). On its end face 20, the head 19 is provided with a pocket-like depression 21. In the recess 21, three pairs of plate springs 22 are inserted and covered with a steel washer 23.
  • a steel ball 24 sits on the steel disk 23 and protrudes on the end face 20 of the head 19.
  • the recess 21 merges with an abutment collar 25 into an end section 26 of larger diameter, into which a holding device in the form of a cup-shaped cover cap 27 is inserted.
  • the cover cap 27 has a flange-like edge 28 and a sleeve-shaped section 29.
  • the cover cap 27 is put over the steel ball 24.
  • the edge 28 bears against the contact collar 25 and the steel disk 23.
  • the edge 30 of the head 19 surrounding the recess 21 is caulked at uniform angular intervals around the flange-like edge 28. As a result, the cover cap 27 is fastened to the switching pin 18.
  • the sleeve-shaped section 29 receives the steel ball 24 without play.
  • the bottom 31 of the cap 27 has a hole punched exactly in the center, on the edge 21 of which the steel ball 24 abuts.
  • the thrust member serving as the switching pin 18 is thus designed as the first exemplary embodiment of an assembled unit with the ball 24 together with the spring and holding device 21 to 23, 25 to 31. It can be provided with the "tolerance-caulked ball 24" before it is inserted into the electromagnet 12.
  • the stop formed by the edge 28 for the steel disc 23, on which the prestressed plate spring pairs 22 press, enables the ball 24 held by the holding device on the switching pin 18 to move easily.
  • This required smooth movement of the ball 24 can be adjusted better than by the precise tolerance caulking, as well as checking before the switching pin 18 is fastened in the magnet armature 17.
  • the prefabricated assembly is used in the electromagnet 12, the switching pin 18 with its end 32 through the magnet armature 17 and one whose front side engages the shift lever i3 of the electromagnet 12 and the end 32 is caulked there.
  • the end face 20 of the head 19 of the switching pin 18 serves as a support for the preassembled structural unit for caulking the end 32 in the electromagnet 12, provided that it is not caulked as an edge 30 on the edge 28 of the cover cap 27.
  • the switching pin 34 is provided with a head 35 which has an outer annular groove 36 near its transition to the switching pin 34.
  • a recess 38 is in turn formed in the end face 37 of the head 35. It has a cylindrical inner wall of constant diameter along its entire axial length.
  • the steel ball 24, which protrudes somewhat from the recess 38, is accommodated in the spacer sleeve 39.
  • a cup-shaped cover cap 40 is pushed onto the head 35.
  • the cap 40 has a precisely punched hole 43 in the middle of its bottom 42.
  • the diameter of the hole 43 is smaller than the diameter of the ball 24, so that the ball 24 protrudes somewhat through the hole 41, but from the cap 40 in the spacer sleeve 39 is held.
  • the bottom 42 of the cap 40 serves as a stop for the spacer sleeve 39, against which the steel disk 23 is pressed by the spring force of the prestressed plate spring pairs 22.
  • the ball 24 is in turn rotatably arranged on the connecting bolt 34 and "caulked with tolerance".
  • This preassembled unit is also inserted into the electromagnet 12 and the end of the switching pin 34 protruding through the magnet armature 17 and the switching lever 33 is caulked like the end 32 of the switching pin 18 of the first exemplary embodiment.
  • the base 42 of the cover cap 40 serves as a support during this caulking.
  • the space of the cap 27 receiving the ball 24 and not filled by it. 40 is filled with lubricant.

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)
  • Electromagnets (AREA)

Abstract

Un dispositif de démarrage pour moteurs à combustion interne comprend un dispositif de retenue (27, 28) d'une bille (24) montée sur des ressorts qui fait partie d'un organe de poussée qui forme un boulon de mise au point (18, 19) d'un électro-aimant (12). Le dispositif de retenue se compose d'un couvercle (27) qui reçoit la bille (24) sans jeu et dont le bord (28) est assujetti au boulon de mise au point (18, 19). Le couvercle sert de butée pour un disque (23) qui recouvre un agencement de ressorts agencé sur le boulon de mise au point (18, 19). Le fond du couvercle (27) est pourvu d'un orifice sur le bord (31) duquel s'appuie la bille (24). Le boulon de mise au point (18, 19), qui forme un composant préfabriqué avec l'agencement de ressorts (22), le disque (23), la bille (24) et le dispositif de retenue (27, 28), est assujetti à l'induit (17) de l'aimant.

Claims (4)

  1. Dispositif de démarrage pour moteurs à combustion interne avec un pignon de démarrage (7) qui peut coulisser dans le sens longitudinal pour engrener dans une couronne dentée (44) et faire démarrer le moteur à combustion interne, pignon de démarrage (7) qui peut être actionné au moyen d'une tige de poussée accouplée (6) par un goujon de commutation (18) pouvant être actionné au moyen d'un électro-aimant (12), ce goujon venant en prise sur la face frontale (20) de la tige de poussée (6) au moyen d'une bille (24) disposée axialement de façon élastique et de façon à pouvoir tourner, cette bille reposant en partie dans une cavité (21) dans la face frontale (20) du goujon de commutation (18) pouvant être actionnée au moyen d'un électro-aimant (12), ce goujon venant en prise sur la face frontale (20) de la tige de poussée (6) au moyen d'une bille (24) disposée axialement de façon élastique et de façon à pouvoir tourner, cette bille reposant en partie dans une cavité (21) dans la face frontale (20) du goujon de commutation (18) et reposant sur une rondelle (23) s'appuyant sur un dispositif élastique (22), dispositif de démarrage caractérisé en ce que la bille (24) est logée sans jeu dans un dispositif particulier de maintien (27;39;40) fixé sur la cavité (21) du goujon de commutation (18) et en ce que la rondelle (23) s'appuyant sur le dispositif élastique (22) repose élastiquement de façon flexible sur ce dispositif de maintien (27;39;40).
  2. Dispositif de démarrage selon la revendication 1, caractérisé en ce que le dispositif de maintien (27) a une section en forme de douille recevant la bille (24), section dont l'extrémité arrière constituée comme butée (28) pour la rondelle (23) est fixée dans la section terminale (26) de la cavité (21) et dont l'extrémité antérieure en forme de fond présente un trou sur le bord (31) duquel repose la bille (24) et fait un peu saillie hors du trou.
  3. Dispositif de démarrage selon la revendication 1, caractérisé en ce que le dispositif de maintien présente une douille d'écartement (39) montée dans la cavité (38) recevant la bille (24), sur la face frontale arrière de laquelle repose de façon élastique la rondelle (23) et dont la face antérieure frontale repose sur le fond (42) d'un chapeau de recouvrement (40) qui est fixé sur la tête (35) du goujon de commutation (34).
  4. Dispositif de démarrage selon l'une des revendications 1 à 3, caractérisé en ce que le goujon de commutation (18;34) contenant le dispositif élastique (22), la rondelle (23), la bille (24) et le dispositif de maintien (27;39;49), constitue une unité préassemblée.
EP90906905A 1989-08-31 1990-05-26 Dispositif de demarrage pour moteurs a combustion interne Expired - Lifetime EP0489735B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3928795A DE3928795A1 (de) 1989-08-31 1989-08-31 Andrehvorrichtung fuer brennkraftmaschinen
DE3928795 1989-08-31

Publications (2)

Publication Number Publication Date
EP0489735A1 EP0489735A1 (fr) 1992-06-17
EP0489735B1 true EP0489735B1 (fr) 1993-12-08

Family

ID=6388251

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90906905A Expired - Lifetime EP0489735B1 (fr) 1989-08-31 1990-05-26 Dispositif de demarrage pour moteurs a combustion interne

Country Status (8)

Country Link
US (1) US5243866A (fr)
EP (1) EP0489735B1 (fr)
JP (1) JPH05500546A (fr)
KR (1) KR920704006A (fr)
BR (1) BR9007623A (fr)
DE (2) DE3928795A1 (fr)
ES (1) ES2047928T3 (fr)
WO (1) WO1991003643A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2394517A (en) * 2002-10-23 2004-04-28 Black & Decker Inc Powered hammer having a spindle lock with synchronising element

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB110004A (en) * 1916-10-03 1917-10-03 Gogu Constantinesco Apparatus for Transmitting Pressure between Fluid Columns and Moving Surfaces.
GB118665A (en) * 1917-09-01 1918-09-02 Harry Maconochie Improvements in the Production of Zinc Oxide.
FR1100064A (fr) * 1954-02-23 1955-09-15 Cie Gen Equip Aeronautique Ensemble tournant avec joint annulaire
US2808607A (en) * 1954-03-18 1957-10-08 John P Urso Leg-elevating ball casters
US2819486A (en) * 1955-10-25 1958-01-14 Dick Edison Caster for furniture
US3463564A (en) * 1967-11-17 1969-08-26 Universal American Corp Bearing assembly
US4285550A (en) * 1979-10-15 1981-08-25 Blackburn Robert V Weight transfer roller apparatus
US4853570A (en) * 1987-01-23 1989-08-01 Mitsubishi Denki Kabushiki Kaisha Coaxial engine starter with hollow shaft clutch
JPS63147565U (fr) * 1987-03-18 1988-09-28
JPH02256911A (ja) * 1989-03-29 1990-10-17 Nippon Seiko Kk スピンドルユニット

Also Published As

Publication number Publication date
ES2047928T3 (es) 1994-03-01
KR920704006A (ko) 1992-12-19
JPH05500546A (ja) 1993-02-04
EP0489735A1 (fr) 1992-06-17
US5243866A (en) 1993-09-14
DE59003810D1 (de) 1994-01-20
BR9007623A (pt) 1992-05-19
DE3928795A1 (de) 1991-03-07
WO1991003643A1 (fr) 1991-03-21

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