EP2299104B1 - Dispositif de démarrage pour un moteur à combustion interne - Google Patents

Dispositif de démarrage pour un moteur à combustion interne Download PDF

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Publication number
EP2299104B1
EP2299104B1 EP10173587.6A EP10173587A EP2299104B1 EP 2299104 B1 EP2299104 B1 EP 2299104B1 EP 10173587 A EP10173587 A EP 10173587A EP 2299104 B1 EP2299104 B1 EP 2299104B1
Authority
EP
European Patent Office
Prior art keywords
spring
starting device
cable
winding
coupling 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.)
Not-in-force
Application number
EP10173587.6A
Other languages
German (de)
English (en)
Other versions
EP2299104A3 (fr
EP2299104A2 (fr
Inventor
Carsten Ziegs
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.)
Makita Corp
Original Assignee
Makita Corp
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
Priority claimed from DE202009011429U external-priority patent/DE202009011429U1/de
Priority claimed from DE202009011430U external-priority patent/DE202009011430U1/de
Application filed by Makita Corp filed Critical Makita Corp
Publication of EP2299104A2 publication Critical patent/EP2299104A2/fr
Publication of EP2299104A3 publication Critical patent/EP2299104A3/fr
Application granted granted Critical
Publication of EP2299104B1 publication Critical patent/EP2299104B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N3/00—Other muscle-operated starting apparatus
    • F02N3/02—Other muscle-operated starting apparatus having pull-cords
    • 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
    • F02N5/00—Starting apparatus having mechanical power storage
    • F02N5/02—Starting apparatus having mechanical power storage of spring type

Definitions

  • the invention relates to a starting device for at least one internal combustion engine, in particular cable start device for at least a two-stroke or four-stroke engine, with at least one rotatably mounted in a housing pulley or cable drum, which generates a drive torque for a motor shaft by means of at least one Anwerfergriffs or pull handle at least one force transmission means, in particular via a starter rope or traction cable, in rotation and at least one elastic coupling member with at least one driver member, in particular with at least one pawl, connected by means of which the drive torque is transferable to the motor shaft, the coupling member has two ends, wherein one end is engaged with the cam member.
  • a starting device for an internal combustion engine in particular a cable starter for an internal combustion engine, in particular for a two-stroke or four-stroke engine, often caused problems in the past, because at startup by the compression in the engine periodically high reaction forces occur, whereby changing and passing very high forces act on the hand of the operator.
  • the crankshaft an elastic member interposed, by means of which the handle and power transmission means mediated train movement during startup of the above-mentioned fluctuations is somewhat or completely freed.
  • the spring force of the coupling element acts on the pulley or cable drum, so that it must be robust and thus made heavy.
  • a starting device for an internal combustion engine is known.
  • This has an actuating device and a driver, which can be coupled via coupling means with the crankshaft of the internal combustion engine.
  • the driver and the actuator are rotatably mounted about a rotation axis.
  • the driver and the actuator are connected to each other via a damping spring, which is connected to a first end with the actuator and with a second end to the driver.
  • the EP 1 712 779 A2 shows a starting device for an internal combustion engine. It can be seen that a pull rope is wound on a pulley.
  • the sheave is operatively connected to a coupling member, and the coupling member has an end connected to a cam member, and the coupling member has another end which is fixed in an opening of the sheave.
  • the pull rope is fixed in an opening.
  • the DE 10 2007 008 327 A 1 shows a starting device for an internal combustion engine in which a pull rope is wound on a pulley.
  • the sheave is operatively connected to a coupling member, and the coupling member has an end connected to a dog member.
  • the coupling member is attached via one end to a pin of the sheave, so that an operative connection between the coupling member and the pull rope also does not exist directly.
  • the US 4,480,605 shows a starting device for an internal combustion engine with a pulley on which a pull rope is wound, and the pulley is engaged with a driver member, without an elastic coupling member would be located between pulley and driver member.
  • a spiral spring serves only as a return spring.
  • the US 2,772,699 shows a starting device for an internal combustion engine, which has no elastic coupling member which would be in engagement with the end of the pull rope, which pull rope would be passed through the pulley.
  • the invention is based on the object to make a starting device of the type mentioned by direct operative connection of power transmission means and elastic member / coupling member as easy as possible.
  • a starting device for at least one internal combustion engine is now an elastic coupling member with at least one driver member, in particular with at least one jack driver, connected by means of which the drive torque is transferable to the motor shaft.
  • the coupling member has two ends, one end of which is in engagement with the driver member and another end of the coupling member is engaged with the sheave or cable drum and the power transmission means.
  • the coupling element acts directly on the power transmission means in the pulley or the cable drum and thus the material load in the pulley or the cable drum is greatly reduced.
  • a lightweight construction of the pulley is possible, whereby the whole starting device is easier. Since such starting devices are often used in devices such as motor chain saws that already have a significant weight anyway, any weight saving is desired.
  • the starting device is the feature of the pulley or the cable drum and the Power transmission means provided in the engaging end of the coupling element in the starting device, that the power transmission means is guided by the pulley or the cable drum and is articulated to the coupling member.
  • the coupling element should be designed so that the power transmission means, such as a pull rope, can be attached thereto.
  • the starting device is provided such that the coupling member comprises a wire-wound three-dimensional spring whose first, the pulley or drum facing winding has a smaller cross-sectional area, as a subsequent turn.
  • the angle of rotation by which the driver member is rotatable under stress of the elastic coupling member with respect to the sheave or rope drum can be limited to a definable maximum angle value, whereby the maximum load of the coupling element can be predetermined. This can be done for example by a stop.
  • the coupling member having a three-dimensional spring wound from wire will now be provided such that its first winding facing the pulley or rope drum has a smaller cross-sectional area than a subsequent winding. This increases the life of the spring. This minimizes the deformations, i. the fracture-endangered area of the spring is relieved.
  • a cross-sectional area here is to be understood as the area enclosed by a turn.
  • the cross-sectional areas of the spring from the second of the sheave or drum facing winding decrease in size to the driver member facing the end substantially.
  • the spring is formed in a circular shape and thus as a truncated cone. Rather, all possible wound forms with tapered cut surfaces, such as truncated pyramids, Tetraederstümpfe, etc. conceivable. Likewise, a truncated cone shape with elliptical cross-sectional areas or a truncated pyramidal shape with polygonal cross-sectional areas would be conceivable.
  • the wound spring is a tapered coil spring.
  • Such coil springs are commercially available well and inexpensively.
  • the ratio of diameter or longitudinal blade on a base surface and a top surface of the spring is 0.9 or less, preferably 0.8 to 0.70 and particularly preferably about 0.75.
  • the wire diameter of the spring is in the range of 2.5 to 3 mm and, according to another preferred embodiment, is about 2.8 mm.
  • a starting device 100 'as known in the art Such a starting device 100 'is, as well as in Fig. 3 illustrated starting device 100 for manually starting an internal combustion engine determines, for example, belongs to a motor chain saw.
  • the cable pull-off device 100, 100 ' is accommodated in a housing 10, 10' that is suitable for both the embodiment according to the prior art ( Fig. 1 and 2 ) is a removable with louvers 11 'provided cover of the motor housing. From the inner wall of the housing 10,10 'is a bearing pin 14' (only in Fig.
  • the pulley or cable drum 17,17 ' has a bearing pin 14' surrounding annular receiving space 20/20 ', in which a coil spring 26/26' is arranged and which is in engagement with a Klinkenmit curriculumgliedes 25 '.
  • the outer, that is, the pulley or cable drum 17,17 'facing the end of the coil spring 26,26' is mounted according to the representation of the prior art in a slot 27 ', in an annular shoulder of the pulley or cable drum 17 'is provided. This shoulder encloses the coil spring 26 ', the outer winding rests against the inner wall of the paragraph.
  • the Klinkenmitauerglied 25 'facing the end of the coil spring 26' is mounted in the Klinkenmit scenery to the outer.
  • the coil spring 26 ' as in Fig.1 is shown according to the prior art, represents a cylindrical coil spring and thus is also the Klinkenmit instructionalglied 25 'formed accordingly.
  • the coil spring 26 in the Fig. 3 according to a preferred embodiment of the present invention shown integrated into the pulley or cable drum 17, that one end of the pull rope is guided for example by a hole in the pulley or cable drum 17 to the coil spring 26 and at this on a hook 12 of the coil spring 26 in the nodal chamber 18 attached.
  • this could for example be done by putting a knot in the pull rope, the hook 12 for this purpose is advantageously designed as an eyelet.
  • the coil spring according to the in FIG. 3 and 4 shown embodiment formed such that the first, the pulley or cable drum 17 facing winding 13 has a smaller cross-sectional area, as a subsequent winding.
  • This smaller spring coil 13 bends when, then mainly at this point occurring at break, by first coming to rest on the spring 26 in the journal when loaded.
  • From the second winding to the spring 26 is formed as a truncated cone, whose base surface of the pulley or cable drum 17 faces, while the top surface facing the Klinkenmit instructionalglied 25.
  • Such a designed coil spring 26 leads to a significantly improved ventilation behavior of the internal combustion engine, since the inflow of the cooling air is improved by the starting device 100 in the arranged after the starting device air guide 12, since the conical spring 26 follows the incoming cooling air flow, and thus the cooling air flow leads positively ,

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Springs (AREA)
  • Transmission Devices (AREA)
  • Pulleys (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)

Claims (8)

  1. Dispositif de démarrage (100) pour un moteur à combustion interne, avec une poulie de renvoi (17) logée en étant rotative dans un boîtier (10), qui pour créer un couple d'entraînement pour un arbre moteur au moyen d'une poignée de traction peut être mise en rotation par l'intermédiaire d'un câble de traction et qui par l'intermédiaire d'un organe de couplage (26) élastique est reliée avec un organe d'entraînement et au moyen de laquelle le couple d'entraînement est transmissible sur l'arbre moteur, l'organe de couplage (26) comportant deux extrémités, une extrémité étant en engagement avec l'organe d'entraînement,
    caractérisé en ce que
    l'autre extrémité de l'organe de couplage (26) est en engagement avec la poulie de renvoi (17) et avec le câble de traction, de telle sorte que le câble de traction soit guidé par la poulie de renvoi (17) et soit articulé sur l'organe de couplage (26).
  2. Dispositif de démarrage selon l'une quelconque des revendications précédentes, caractérisé en ce que l'organe de couplage (26) comporte un ressort tridimensionnel enroulé en fil métallique, dont le premier enroulement faisant face à la poulie de renvoi (17) présente une section transversale inférieure à celle d'un enroulement suivant.
  3. Dispositif de démarrage selon l'une quelconque des revendications précédentes, caractérisé en ce que les surfaces de section transversale du ressort (26) rétrécissent à partir du deuxième enroulement faisant face à la poulie de renvoi (17) vers l'extrémité faisant face à l'organe d'entraînement.
  4. Dispositif de démarrage selon l'une quelconque des revendications précédentes, caractérisé en ce qu'à partir du deuxième enroulement faisant face à la poulie de renvoi (17), le ressort (26) enroulé présente une forme tronconique avec des surfaces de section transversale rondes et/ou elliptiques ou une forme pyramidale tronquée avec des surfaces de section transversale carrées ou polygonales.
  5. Dispositif de démarrage selon l'une quelconque des revendications précédentes, caractérisé en ce qu'à partir du deuxième enroulement faisant face à la poulie de renvoi (17) ou au tambour à câble, le ressort (26) enroulé est un ressort en spirale qui se rétrécit.
  6. Dispositif de démarrage selon l'une quelconque des revendications précédentes, caractérisé en ce qu'un rapport des diamètres du premier au deuxième enroulement faisant face à la poulie de renvoi (17) du ressort enroulé (26) est de 0,9 ou moins.
  7. Dispositif de démarrage selon l'une quelconque des revendications précédentes, caractérisé en ce que le rapport des diamètres se situe dans l'ordre de 0,8 à 0,70, de préférence d'environ 0,75.
  8. Dispositif de démarrage selon l'une quelconque des revendications précédentes, caractérisé en ce qu'un diamètre du fil métallique du ressort se situe dans l'ordre de 2,5 à 3 mm, de préférence d'environ 2,8 mm.
EP10173587.6A 2009-08-25 2010-08-20 Dispositif de démarrage pour un moteur à combustion interne Not-in-force EP2299104B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202009011429U DE202009011429U1 (de) 2009-08-25 2009-08-25 Startvorrichtung für Brennkraftmotor
DE202009011430U DE202009011430U1 (de) 2009-08-25 2009-08-25 Startvorrichtung für Brennkraftmotor

Publications (3)

Publication Number Publication Date
EP2299104A2 EP2299104A2 (fr) 2011-03-23
EP2299104A3 EP2299104A3 (fr) 2012-01-11
EP2299104B1 true EP2299104B1 (fr) 2014-11-12

Family

ID=43332290

Family Applications (2)

Application Number Title Priority Date Filing Date
EP10173584.3A Not-in-force EP2290222B1 (fr) 2009-08-25 2010-08-20 Dispositif de démarrage pour un moteur à combustion interne
EP10173587.6A Not-in-force EP2299104B1 (fr) 2009-08-25 2010-08-20 Dispositif de démarrage pour un moteur à combustion interne

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP10173584.3A Not-in-force EP2290222B1 (fr) 2009-08-25 2010-08-20 Dispositif de démarrage pour un moteur à combustion interne

Country Status (3)

Country Link
US (2) US8215279B2 (fr)
EP (2) EP2290222B1 (fr)
CN (2) CN101994625B (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2290222B1 (fr) * 2009-08-25 2014-11-12 Makita Corporation Dispositif de démarrage pour un moteur à combustion interne
DE202010016015U1 (de) * 2010-11-30 2012-03-01 Makita Corporation Startvorrichtung für einen Brennkraftmotor
DE102012002227A1 (de) * 2011-02-07 2012-08-09 Andreas Stihl Ag & Co. Kg "Handgeführtes Arbeitsgerät und Starteinrichtung für ein handgeführtes Arbeitsgerät"
DE202011000610U1 (de) * 2011-03-17 2012-06-18 Makita Corporation Startvorrichtung für mindestens eine Verbrennungskraftmaschine, insbesondere Seilzugstartvorrichtung
WO2014137261A1 (fr) * 2013-03-08 2014-09-12 Husqvarna Ab Enrouleur à cordon pour appareil de démarrage
DE102013009891A1 (de) * 2013-06-13 2014-12-18 Andreas Stihl Ag & Co. Kg Arbeitsgerät mit einem Verbrennungsmotor

Family Cites Families (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2772669A (en) * 1953-09-08 1956-12-04 Fairbanks Morse & Co Engine pull starter
US3779537A (en) * 1973-02-20 1973-12-18 Napoleon Spring Works Inc Cone apparatus
US4284161A (en) * 1978-11-24 1981-08-18 Kawasaki Motors Corp., U.S.A. Suspension system for snowmobiles
US4480605A (en) * 1983-05-09 1984-11-06 Brunswick Corporation Recoil starter
DE4135405C2 (de) 1991-10-26 2000-08-17 Stihl Maschf Andreas Startvorrichtung für Brennkraftmotoren
EP0970544B1 (fr) * 1997-03-26 2000-11-15 Kirk Acoustics A/S Ressort de contact et outil servant a le manipuler
JP3905689B2 (ja) * 2000-05-24 2007-04-18 株式会社共立 リコイルスタータ装置
US10135253B2 (en) 2000-12-29 2018-11-20 Abb Schweiz Ag System, method and computer program product for enhancing commercial value of electrical power produced from a renewable energy power production facility
JP2002327666A (ja) * 2001-03-01 2002-11-15 Starting Ind Co Ltd スタータ装置
JP4109838B2 (ja) * 2001-05-25 2008-07-02 スターテング工業株式会社 リコイルスタータ装置
JP2003148305A (ja) * 2001-11-16 2003-05-21 Starting Ind Co Ltd リコイルスタータ
ATE272804T1 (de) * 2002-01-25 2004-08-15 Brand Wilhelm Kg Federaufnahmekonus für ein federende einer spiralförmigen torsionsfeder
KR100962156B1 (ko) * 2002-05-20 2010-06-10 스타팅 고교 가부시키가이샤 리코일 시동기
US6981482B2 (en) * 2002-08-29 2006-01-03 Starting Industrial Co., Ltd Recoil starter
JP4014998B2 (ja) * 2002-10-21 2007-11-28 スターテング工業株式会社 リコイルスタータ
DE20319902U1 (de) 2003-01-29 2004-06-09 Dolmar Gmbh Startvorrichtung für Brennkraftmotor
DE20301182U1 (de) * 2003-01-29 2004-06-09 Dolmar Gmbh Startvorrichtung für Brennkraftmotor
JP2004360494A (ja) * 2003-06-02 2004-12-24 Starting Ind Co Ltd リコイルスタータ
US7191752B2 (en) * 2004-05-14 2007-03-20 Husqvarna Outdoor Products Inc. Energy storing starter assembly
JP4064961B2 (ja) 2004-10-06 2008-03-19 スターテング工業株式会社 リコイルスタータ
JP4523469B2 (ja) 2005-03-29 2010-08-11 スターテング工業株式会社 リコイルスタータ
US7140341B2 (en) * 2005-04-14 2006-11-28 Aktiebolaget Electrolux Energy storing starter assembly
DE102007008327B4 (de) * 2007-02-16 2016-06-23 Andreas Stihl Ag & Co. Kg Starteinrichtung für einen Verbrennungsmotor
DE102008007291B4 (de) * 2008-02-02 2016-12-22 Andreas Stihl Ag & Co. Kg Starteinrichtung für einen Verbrennungsmotor
US8132553B2 (en) * 2008-12-03 2012-03-13 Techtronic Outdoor Products Technology Limited Recoil starter system
EP2290222B1 (fr) * 2009-08-25 2014-11-12 Makita Corporation Dispositif de démarrage pour un moteur à combustion interne

Also Published As

Publication number Publication date
US20110048360A1 (en) 2011-03-03
US20110048359A1 (en) 2011-03-03
CN101994624B (zh) 2015-07-01
CN101994625B (zh) 2015-03-18
EP2290222A2 (fr) 2011-03-02
CN101994625A (zh) 2011-03-30
EP2290222B1 (fr) 2014-11-12
US8770167B2 (en) 2014-07-08
EP2299104A3 (fr) 2012-01-11
EP2290222A3 (fr) 2012-01-11
EP2299104A2 (fr) 2011-03-23
US8215279B2 (en) 2012-07-10
CN101994624A (zh) 2011-03-30

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