EP1682296A1 - Machine portative - Google Patents

Machine portative

Info

Publication number
EP1682296A1
EP1682296A1 EP04790638A EP04790638A EP1682296A1 EP 1682296 A1 EP1682296 A1 EP 1682296A1 EP 04790638 A EP04790638 A EP 04790638A EP 04790638 A EP04790638 A EP 04790638A EP 1682296 A1 EP1682296 A1 EP 1682296A1
Authority
EP
European Patent Office
Prior art keywords
hand
voltage source
working machine
held
machine according
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
EP04790638A
Other languages
German (de)
English (en)
Other versions
EP1682296B1 (fr
EP1682296B2 (fr
Inventor
Ernst Gorenflo
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 Engineering Germany GmbH
Original Assignee
Dolmar 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=34353529&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1682296(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Dolmar GmbH filed Critical Dolmar GmbH
Publication of EP1682296A1 publication Critical patent/EP1682296A1/fr
Publication of EP1682296B1 publication Critical patent/EP1682296B1/fr
Application granted granted Critical
Publication of EP1682296B2 publication Critical patent/EP1682296B2/fr
Anticipated expiration legal-status Critical
Not-in-force legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B63/00—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices
    • F02B63/02—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for hand-held tools
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2400/00—Control systems adapted for specific engine types; Special features of engine control systems not otherwise provided for; Power supply, connectors or cabling for engine control systems
    • F02D2400/06—Small engines with electronic control, e.g. for hand held tools
    • 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

Definitions

  • the invention relates to a hand-held working machine, in particular chainsaw, hedge trimmer, leaf blower, lawn edger, cut-off machine or the like.
  • a hand-held working machine in particular chainsaw, hedge trimmer, leaf blower, lawn edger, cut-off machine or the like.
  • the supply voltage is generally used to provide an ignition voltage on the one hand and a control voltage on the other hand.
  • the ignition voltage supplies the necessary electrical energy to ignite the combustion process in the engine.
  • the control voltage enables electrical / electronic control or regulation of the internal combustion engine.
  • the control voltage can also serve to actuate a valve or electrical consumer (handle heating etc.) or the like.
  • BEST ⁇ TIGW ⁇ SKOPIE see / electronic control or regulation of the internal combustion engine is present, the starting behavior of the internal combustion engine deteriorates. The ease of use of the machines is decisively justified by the light-off behavior of the hand-held work machines.
  • a special, complex circuit arrangement is known from the publication DE 295 06 350 IM which makes it possible to supply the electronics of the hand-held work machines with the necessary control voltage (nominal DC voltage) in the critical starting phase.
  • Part of the ignition energy is diverted to control functions by the circuit according to the invention, as a result of which the existing ignition energy does not remain constant. This in turn has a negative influence on the starting behavior of the internal combustion engine, but this cannot be avoided easily. If the existing ignition energy is not sufficient to ignite the compressed fuel mixture in the combustion chamber of the engine because part of the voltage generated by the generator is used for the control, this leads to a misfire, which can no longer be compensated for by the existing control , As a result, efforts are also made to keep the ignition energy constant. However, this goal is not achieved by the circuit according to the invention. Furthermore, the control voltage branched off by this solution is not sufficient to implement an electrical injection for the internal combustion engine.
  • the invention is therefore based on the object of providing a hand-held work machine of the type mentioned at the outset, which does not require an expensive starting circuit for the critical starting phase of the internal combustion engine and in which the required, constant supply voltage for the motor is available in order to achieve an optimal starting behavior.
  • the hand-held work machine is electrically connected to an additional voltage source.
  • This voltage source supplies the supply voltage for the internal combustion engine that is required before starting the internal combustion engine, but is not yet available at this point in time.
  • the supply voltage is always constant and does not depend on the generated generator voltage, which in turn depends on the engine speed - at least in the lower speed range.
  • the additional voltage source can also be dimensioned in such a way that it is also sufficient to initially supply an existing engine control and / or injection system with energy.
  • the supply voltage required during operation of the internal combustion engine is divided into an ignition voltage and a control voltage.
  • the required control voltage is only supplied by the additional voltage source. This makes it possible to dimension the additional voltage source as small as possible with regard to its electrical power and external dimensions.
  • the required ignition voltage is generated exclusively by the voltage generator, which, as already mentioned, emits a sufficient generator voltage at the lower speeds.
  • the voltage supplied by the additional voltage source is independent of the speed of the internal combustion engine.
  • the voltage supplied by the additional voltage source is too low, this leads to the electronics not working or only functioning to a limited extent. If the voltage is too high, which is caused by high engine speed, this can easily destroy the electronics.
  • the additional voltage source expediently has at least one rechargeable battery that can be recharged.
  • the voltage source or the accumulator can be recharged again and again, ie again storing energy if it starts at the start of the Internal combustion engine has been completely consumed.
  • the additional voltage source does not have to be renewed itself when its stored energy has been used up, but can simply be recharged in order to enable further use.
  • the accumulator can be recharged either by an external charger or by the voltage generator of the working machine with a downstream charging circuit.
  • the external charger can either be electrically connected to the battery via a plug, or the battery is removed from the machine and then connected directly to the external charger.
  • the accumulator in which the accumulator is charged via the voltage generator of the working machine, the accumulator first delivers the required supply voltage before starting, and then is recharged again by the existing, sufficient generator voltage after the engine has been successfully started.
  • a charging circuit is provided in the working machine, which enables and regulates the charging process of the accumulator. It goes without saying that the accumulator can only be charged if the generator voltage generated is high enough, ie it is sufficient to provide the necessary supply voltage on the one hand and to supply the charging voltage for the accumulator on the other hand. To do this, the engine must have reached the required speed.
  • the additional voltage source has at least one battery.
  • this battery is not rechargeable and is therefore replaced when its voltage is no longer sufficient to support the starting process of the internal combustion engine.
  • the battery only has to deliver the required control voltage during the starting process (according to claim 2), since it can still be used for numerous start-ups. So for weight and cost reasons commercially available batteries such. B. micro, mignon, block, 9 volt block batteries etc. are used.
  • the battery is not integrated in the machine, since it would otherwise be more difficult to replace it.
  • an accumulator is used as an additional voltage source, it can advantageously also be well integrated in the machine, since an exchange of the accumulator i. d. R. is not necessary because it is rechargeable.
  • the additional voltage source is good against dust, water and the like. a. protected from external influences and safely arranged in the machine.
  • the additional voltage source can be plugged in or plugged into or into the housing of the hand-held work machine.
  • This development can be particularly advantageous as an additional voltage source in the case of an existing battery. This enables simple replacement of the additional voltage source if it is used up. Of course, this measure can also be used to simply replace an accumulator.
  • the working machine can be provided with an open or closed battery compartment. When the battery compartment is closed, the cover protects the battery or accumulator underneath from external environmental influences.
  • the additional voltage source is arranged externally from the housing of the hand-held work machine and is electrically connected to the work machine by an electrical conductor and a plug connection.
  • this additional voltage source z. B. on the belt of the operator ners / workers.
  • the additional voltage source is separated from the working machine by the plug-in connection after the internal combustion engine has started, and that the machine can be used alone.
  • the additional voltage source can be stored in a safe, vibration-free location independent of the working machine or the use of the energy supply of other devices (for example available to the operator), for example a flashlight, a PDA, a cell phone or the like, can be provided.
  • a further variant of the hand-held working machine provides that the additional voltage source is electrically connected to further electrical or electronic circuits or further auxiliary devices of the hand-held working machine and supplies it with voltage.
  • a headlight is attached to the work machine to illuminate the workplace.
  • an electrical injection system can also be operated with the voltage source before or during the starting process of the engine.
  • other applications are also conceivable, such as. B. an electronic lock that must first be unlocked so that operation of the working machine is possible.
  • a control device which monitors the state of charge of the additional voltage source and reproduces it by means of an optical and / or acoustic signal. It is thus possible for the control device to either renew or recharge the additional voltage source in good time if the existing energy of the voltage source has been largely used up.
  • This control device can also be used to monitor the charging process of an accumulator and to display it accordingly. So can z. B. LEDs or lights of different colors can be used, which indicate a critical state of the additional voltage source by red and signal the correct state by green.
  • the control device can also display the voltage level of the additional voltage source in a digital or analog manner.
  • the additional voltage source can be switched on and off by a start / stop switch.
  • This switch can be used to prevent the electronics of the working machine from loading the additional voltage source as a permanent consumer, so that after a short period of time it is unable to function even though the machine is not in operation.
  • the control device described above can also be switched on and off with the switch. In order to prevent the internal combustion engine from starting unintentionally, this switch can also be used to interrupt the electrical ignition device.
  • a control device for detecting the possibility of charging or recharging the additional voltage source.
  • This is a device for recognizing whether batteries are used, and thus a control device as to whether the energy stores used can be recharged.
  • the charge is advantageously released by an external charger and / or by the voltage generator with a charging circuit, while when a battery is detected, charging or recharging is excluded, in order to avoid the known problems associated with charging or recharging batteries to avoid.
  • Such circuits are used in entertainment devices industry known per se and use form or labeling elements of the voltage source to determine whether or not charging or recharging is possible.
  • the hand-held work machine can be provided with an electric starter which is used to automatically start the internal combustion engine and is electrically connected to the additional voltage source for this purpose.
  • This starter can be arranged in or on the machine, but this significantly increases the weight of the machine. This can make handling of the working machine more difficult.
  • the starter can also be mechanically coupled to the working machine as long as the starting process continues. As soon as the working machine has reached its regular idling speed, it can then be uncoupled from the machine.
  • FIG. 1 is a three-dimensional view of a hand-held work machine according to the invention, in the form of a chainsaw, with a plug connection for the additional, externally arranged voltage source,
  • Fig. 2 is a three-dimensional view of a comparable hand-held work machine, as in Fig. 2, but with an additional voltage source in a special storage compartment in the machine and 3 shows a three-dimensional view of a comparable hand-held work machine, as in FIGS. 2 and 3, but with an additional integrated voltage source within the machine.
  • a hand-held work machine 100 is shown in the form of a motor chain saw.
  • an additional voltage source 14 is used, which is arranged externally of the housing 10 of the machine 100.
  • the additional voltage source 14 is not shown in this figure. However, this is connected to the machine 100 by means of an electrical conductor via the plug connection 16 shown.
  • the plug-in connection 16 consists of a plug which makes an electrical contact with a suitable mating plug on the side of the additional voltage source 14 via one or more conductors.
  • the additional voltage source 14 can consist of a commercially available battery 14b or accumulator 14a. It is also conceivable that the additional voltage source 14 is a mains-operated voltage device, which is disconnected from the work machine 100 after the internal combustion engine 12 has started.
  • the built-in control device 17 can be used to check whether the additional voltage source 14 still delivers sufficient energy or not.
  • the control device 17 can indicate this to the operator by means of an optical as well as an acoustic signal.
  • the additional voltage source 14 consists of two commercially available accumulators 14a or batteries 14b. These are arranged in the storage compartment 15 provided for this purpose.
  • the battery compartment 15 cannot with one The cover shown are closed so that the additional voltage source 14 underneath (here: accumulators 14a or batteries 14b) is protected from dirt, water, etc.
  • This internal battery compartment 15 makes it very easy to replace the rechargeable batteries 14a or the batteries 14b if they are used up or have to be charged by an external charger.
  • the switch 13 can interrupt the electrical contact. In this case, the control device 17 is also switched off so that no quiescent current flows from the additional voltage source 14.
  • the control device 17 can display the current voltage of the voltage source 14 and the electrical contact to the electrics or electronics of the working machine 100 is present.
  • the switch 13 also releases the ignition device so that the internal combustion engine 12 can be started.
  • the switch 13 can also be equipped with an additional jog position, in which only the control device 17 is switched on in order to query the state of the additional voltage source 14.
  • FIG. 3 shows the hand-held work machine 100 with an integrated, additional voltage source 14.
  • This is arranged, for example, under the cover 11 of the housing 10.
  • the cover 11 is secured to the working machine 100 with snap locks.
  • the additional voltage source 14 consists of an accumulator 14a.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)

Abstract

L'invention concerne une machine portative (100) comprenant au moins un moteur à combustion (12) nécessitant une tension d'alimentation pendant le fonctionnement, ainsi qu'un générateur de tension produisant une tension génératrice dépendant du régime du moteur à combustion (12), cette tension génératrice servant à générer la tension d'alimentation. L'objectif de l'invention est de concevoir une machine portative de ce type qui ne nécessite pas de circuit de démarrage complexe pour la phase de démarrage critique du moteur à combustion, la tension d'alimentation constante requise pour le moteur étant néanmoins fournie de façon à obtenir des caractéristiques de démarrage optimales. A cet effet, la machine portative (100) selon l'invention est reliée électriquement à une source de tension supplémentaire (14) qui fournit avant le démarrage du moteur à combustion (12) la tension d'alimentation requise, cette tension n'étant pas encore disponible à cet instant.
EP04790638.3A 2003-10-24 2004-10-19 Machine portative Not-in-force EP1682296B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20316483U DE20316483U1 (de) 2003-10-24 2003-10-24 Handgehaltene Arbeitsmaschine
PCT/EP2004/011816 WO2005039807A1 (fr) 2003-10-24 2004-10-19 Machine portative

Publications (3)

Publication Number Publication Date
EP1682296A1 true EP1682296A1 (fr) 2006-07-26
EP1682296B1 EP1682296B1 (fr) 2009-10-07
EP1682296B2 EP1682296B2 (fr) 2013-08-28

Family

ID=34353529

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04790638.3A Not-in-force EP1682296B2 (fr) 2003-10-24 2004-10-19 Machine portative

Country Status (5)

Country Link
US (1) US7770553B2 (fr)
EP (1) EP1682296B2 (fr)
CN (1) CN1871089B (fr)
DE (2) DE20316483U1 (fr)
WO (1) WO2005039807A1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006031513A1 (de) * 2006-07-07 2008-01-17 Robert Bosch Gmbh Handwerkzeugmaschine, insbesondere Handsäge
FR2912948B1 (fr) * 2007-02-26 2010-02-12 Pellenc Sa Scie a chaine pourvue d'un dispositif de lubrification et procede mis en oeuvre pour realiser cette lubrification
US20110126790A1 (en) * 2009-12-02 2011-06-02 Neil Vacek Battery Powered Electric Starter
CN102802879B (zh) * 2010-03-06 2016-05-25 胡斯华纳有限公司 电池组驱动的电力工具
US20120073145A1 (en) * 2010-09-24 2012-03-29 Jan Gehrki Weed trimmer with electrical starting mechanism
US8733072B2 (en) 2011-11-04 2014-05-27 Briggs & Stratton Corporation Starter system for an engine
JP5962046B2 (ja) * 2012-02-13 2016-08-03 日立工機株式会社 チェンソー
US20140083375A1 (en) * 2012-09-26 2014-03-27 Makita Corporation Power tool
CN105163082A (zh) * 2015-09-10 2015-12-16 国家电网公司 一种手持带电设备在线监控装置
CN105391986A (zh) * 2015-11-27 2016-03-09 国网北京市电力公司 用于电力巡检的视频监控装置和系统
EP3381620B1 (fr) * 2017-03-31 2019-08-28 Andreas Stihl AG & Co. KG Appareil de travail portatif

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US3454860A (en) † 1966-02-25 1969-07-08 Mcculloch Corp Voltage cut-off circuits
DE2743043C2 (de) * 1977-09-24 1987-05-14 Fa. Andreas Stihl, 7050 Waiblingen Schwingungsdämpfende Verbindung zwischen einem schwingungsbeaufschlagten Geräteteil und einem griffseitigen Geräteteil für ein tragbares Arbeitsgerät
JPS57187201A (en) * 1981-05-14 1982-11-17 Kyoritsu Kk Chain saw
DE3416663A1 (de) † 1984-05-05 1985-11-07 Fa. Andreas Stihl, 7050 Waiblingen Leichtstartzuendung
US4720638A (en) 1986-07-31 1988-01-19 Briggs & Stratton Corporation Electronically commutated coaxial starter motor/alternator for an internal combustion engine
DE3844093A1 (de) 1988-12-28 1990-07-05 Metabowerke Kg Elektrohandwerkzeug mit netzunabhaengiger stromversorgung
DE9309436U1 (de) 1993-06-25 1994-11-03 Dolmar GmbH, 22045 Hamburg Handarbeitsmaschine mit einem in einem Gehäuse angeordneten Verbrennungsmotor als Antrieb und eine Einspritzeinrichtung hierfür
DE29506350U1 (de) 1995-04-12 1996-08-14 Dolmar Gmbh Schaltungsanordnung zur batterielosen Stromversorgung der elektronischen Steuerung einer durch einen Verbrennungsmotor angetriebenen Arbeitsmaschine
JP3916299B2 (ja) † 1997-07-23 2007-05-16 ヤマハマリン株式会社 船外機付き船舶用の電装品用電源回路
DE10103995A1 (de) * 2001-01-30 2002-08-22 Epcos Ag Bordstromspeicher 12Volt und/oder 42Volt Kfz-Bordnetze sowie Vorrichtung zum Starten
US6557509B1 (en) † 2001-09-07 2003-05-06 Brunswick Corporation Electrical system for an outboard motor having an engine with a manual recoil starter
CN2496220Y (zh) * 2001-10-11 2002-06-26 谢仕勇 便携式超微型耕整机
CN2576426Y (zh) * 2002-10-19 2003-10-01 管继祥 内动扳手
DE10318494A1 (de) * 2003-04-24 2004-11-11 Bayerische Motoren Werke Ag Energieversorgungssystem für ein Fahrzeug
US7161253B2 (en) * 2003-08-06 2007-01-09 Briggs & Stratton Corporation Portable power source

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Title
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Also Published As

Publication number Publication date
DE20316483U1 (de) 2005-03-17
EP1682296B1 (fr) 2009-10-07
WO2005039807A1 (fr) 2005-05-06
US7770553B2 (en) 2010-08-10
DE502004010213D1 (de) 2009-11-19
CN1871089B (zh) 2010-07-14
CN1871089A (zh) 2006-11-29
EP1682296B2 (fr) 2013-08-28
US20080314338A1 (en) 2008-12-25

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