EP1682296B2 - Handgehaltene arbeitsmaschine - Google Patents

Handgehaltene arbeitsmaschine Download PDF

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Publication number
EP1682296B2
EP1682296B2 EP04790638.3A EP04790638A EP1682296B2 EP 1682296 B2 EP1682296 B2 EP 1682296B2 EP 04790638 A EP04790638 A EP 04790638A EP 1682296 B2 EP1682296 B2 EP 1682296B2
Authority
EP
European Patent Office
Prior art keywords
voltage
work machine
voltage source
handheld work
combustion engine
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 - Fee Related
Application number
EP04790638.3A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1682296B1 (de
EP1682296A1 (de
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
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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(B2) "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/de
Publication of EP1682296B1 publication Critical patent/EP1682296B1/de
Application granted granted Critical
Publication of EP1682296B2 publication Critical patent/EP1682296B2/de
Expired - Fee Related 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
    • 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 edge cutter, cutters or the like.
  • a hand-held working machine in particular chainsaw, hedge trimmer, leaf blower, lawn edge cutter, cutters or the like.
  • the supply voltage is used to provide both an ignition voltage and a control voltage.
  • the ignition voltage provides the necessary electrical energy to ignite the combustion process in the engine.
  • an electrical / electronic control or regulation of the internal combustion engine is made possible by the control voltage.
  • the control voltage can also serve to actuate a valve or electrical consumer (handle heating, etc.) or the like.
  • the DE 34 16 663 A1 discloses a hand-held work machine with an internal combustion engine, which requires a supply voltage during operation, and a voltage generator, which emits a dependent of the rotational speed of the internal combustion engine generator voltage, which serves to generate the supply voltage.
  • This known hand-held work machine is electrically connected to a voltage source which provides the ignition voltage and control voltage when starting the internal combustion engine.
  • a similar starting system for internal combustion engines is from the DE 16 13 852 known.
  • the invention is therefore an object of the invention to provide a hand-held machine of the type mentioned, which does not require a complex start-up circuit for the critical start phase of the engine and still provides the required, constant control voltage for the engine, to an optimal To achieve starting behavior.
  • the hand-held work machine is electrically connected to an additional power source.
  • This voltage source supplies the supply voltage for the internal combustion engine required before and at the start of the internal combustion engine.
  • an optimal starting behavior of the engine can be achieved because 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 - dependent.
  • the additional voltage source can be so dimensioned that it is also sufficient to initially supply any existing engine control and / or injection system with energy.
  • the voltage generator supplies a sufficient generator voltage, which makes it possible to keep the control voltage constant.
  • the additional voltage source does not need to deliver any more 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 supplied only by the additional voltage source. This makes it possible to dimension the additional voltage source as low as possible in terms of their electrical power and external dimensions.
  • the required ignition voltage is generated exclusively by the voltage generator, which, as already mentioned above, emits a sufficient generator voltage in the lower rotational speeds.
  • the voltage supplied by the additional voltage source is independent of the speed of the internal combustion engine.
  • an always constant, constant voltage is present, especially in sensitive electronics, eg. B. is important for the engine control or regulation. If, in fact, the voltage supplied by the additional voltage source is too low, this will result in the electronics not functioning or functioning only to a limited extent. On the other hand, too high a voltage, which is caused by a high engine speed, can easily lead to the destruction of the electronics.
  • the additional voltage source has at least one rechargeable battery.
  • the accumulator In order to effect charging of the accumulator, it 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 be electrically connected in this variant, either via a plug with the battery or the accumulator is removed from the machine and then connected directly to the external charger.
  • the accumulator In the other variant, in which the accumulator is charged via the voltage generator of the working machine, the accumulator before starting the first of the required control voltage, then to be charged again after the successful start of the engine by the existing, sufficient generator voltage.
  • a charging circuit is provided in the working machine, which enables and regulates the charging of the accumulator.
  • the accumulator can only be charged if the generated generator voltage is high enough, i. it is sufficient, on the one hand, to provide the necessary supply voltage and, on the other hand, to also supply the charging voltage for the accumulator. But the engine must have reached the required speed.
  • the additional voltage source has at least one battery.
  • This battery is not rechargeable unlike the accumulator and is thus replaced when its voltage is no longer sufficient to support the starting process of the internal combustion engine. Since the battery only has to supply the required control voltage during the starting process, it can be used for numerous starting operations. Thus, 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, otherwise they would be difficult to replace.
  • a rechargeable battery as an additional voltage source, this can also be well integrated in the machine, since an exchange of the rechargeable battery i. d. R. is not necessary because it is just rechargeable.
  • the additional voltage source is good against dust, water u. a. Protected against external influences and arranged safely in the machine.
  • the additional voltage source is on or plugged into or into the housing of the hand-held work machine.
  • This development may be particularly advantageous for an existing battery as an additional voltage source. This allows a simple replacement of the additional voltage source, if it should be consumed. Of course, even by this measure, an accumulator can be easily replaced.
  • the working machine can be provided with an open or closed battery compartment. With a closed battery compartment, the cover protects the underlying battery or the accumulator from external environmental influences.
  • a control device which monitors the state of charge of the additional voltage source and reproduces by an optical and / or acoustic signal.
  • the control device either renew the additional power source in good time or recharge, if the existing energy of the power source is largely consumed.
  • This control device can also serve to monitor the charging of a battery and display accordingly.
  • different colored LEDs or bulbs are used, which indicate by red a critical state of the additional voltage source and signal green by the proper condition.
  • the additional voltage source can be switched on and off by a start / stop switch.
  • a start / stop switch can be prevented that the electronics of the machine load the additional power source as a permanent consumer, so that it is already inoperative after a short time, although the machine is not in operation.
  • the control device described above can be switched on and off with the switch. In order to prevent unintentional starting of the internal combustion engine, this switch can also be used to interrupt the electrical ignition device.
  • a control device for detecting the charging or recharging possibility of the additional voltage source.
  • This is a device for detecting whether batteries or rechargeable batteries are used, and thus a control device, whether the energy storage devices used are rechargeable.
  • the charge upon detection of a battery, the charge is released by an external charger and / or by the voltage generator with a charging circuit, while recognizing a battery, a charge or recharging is excluded to the known problems with the charge or recharge of batteries to avoid.
  • Such circuits are known per se in devices of the entertainment industry and detect on the basis of form or identification elements of the voltage source the possibility or non-possibility of a charge or recharge.
  • a hand-held work machine 100 is shown in the form of a motor chain saw.
  • an extra Voltage source 14 is used, which is arranged externally from the housing 10 of the machine 100.
  • the additional voltage source 14 is not shown. However, this is connected via the connector 16 shown by means of an electrical conductor to the machine 100.
  • the connector 16 consists of a plug that make electrical contact with a suitable mating connector on the side of the additional voltage source 14 via one or more conductors.
  • the additional voltage source 14 may consist of a commercially available battery 14b or accumulator 14a. It is likewise conceivable that the additional voltage source 14 is a mains-operated voltage device which is disconnected from the working machine 100 after the start of the internal combustion engine 12. Via the built-in control device 17 can be controlled whether the additional voltage source 14 still provides sufficient energy or not.
  • the control device 17 can display this to the operator by means of both an optical and an acoustic signal.
  • the additional voltage source 14 consists of two commercially available accumulators 14a and batteries 14b. These are arranged in the receptacle 15 for this purpose.
  • the battery compartment 15 can be closed with a cover, not shown, so that the underlying, additional power source 14 (here: batteries 14a and batteries 14b) is protected from dirt, water, etc.
  • batteries 14a and batteries 14b the underlying, additional power source 14
  • the switch 13 can interrupt the electrical contact.
  • control device 17 is also turned off so that thereby no quiescent current from the additional voltage source 14 flows.
  • the control device 17 can display the current voltage of the voltage source 14 and the electrical contact to the electrical system or electronics of the work 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 may also be equipped with an additional tip position, in which only the control device 17 is turned on to query the state of the additional voltage source 14.
  • the hand-held work machine 100 is shown 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 with snap fasteners on the work machine 100.
  • 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)
EP04790638.3A 2003-10-24 2004-10-19 Handgehaltene arbeitsmaschine Expired - Fee Related EP1682296B2 (de)

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 (de) 2003-10-24 2004-10-19 Handgehaltene arbeitsmaschine

Publications (3)

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

Family

ID=34353529

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04790638.3A Expired - Fee Related EP1682296B2 (de) 2003-10-24 2004-10-19 Handgehaltene arbeitsmaschine

Country Status (5)

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

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
WO2011110189A1 (en) * 2010-03-06 2011-09-15 Husqvarna Ab Battery driven electric tool
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 (de) * 2017-03-31 2019-08-28 Andreas Stihl AG & Co. KG Handgeführtes arbeitsgerät

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1613852A1 (de) † 1966-02-25 1970-07-30 Mc Culloch Corp Elektrisches Anlasssystem fuer Brennkraftmaschinen
DE3416663A1 (de) † 1984-05-05 1985-11-07 Fa. Andreas Stihl, 7050 Waiblingen Leichtstartzuendung
US6087735A (en) † 1997-07-23 2000-07-11 Sanshin Kogyo Kabushiki Kaisha Power circuit for marine engine
US6557509B1 (en) † 2001-09-07 2003-05-06 Brunswick Corporation Electrical system for an outboard motor having an engine with a manual recoil starter

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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
DE10103995A1 (de) * 2001-01-30 2002-08-22 Epcos Ag Bordstromspeicher 12Volt und/oder 42Volt Kfz-Bordnetze sowie Vorrichtung zum Starten
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

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1613852A1 (de) † 1966-02-25 1970-07-30 Mc Culloch Corp Elektrisches Anlasssystem fuer Brennkraftmaschinen
DE3416663A1 (de) † 1984-05-05 1985-11-07 Fa. Andreas Stihl, 7050 Waiblingen Leichtstartzuendung
US6087735A (en) † 1997-07-23 2000-07-11 Sanshin Kogyo Kabushiki Kaisha Power circuit for marine engine
US6557509B1 (en) † 2001-09-07 2003-05-06 Brunswick Corporation Electrical system for an outboard motor having an engine with a manual recoil starter

Also Published As

Publication number Publication date
EP1682296B1 (de) 2009-10-07
CN1871089B (zh) 2010-07-14
WO2005039807A1 (de) 2005-05-06
EP1682296A1 (de) 2006-07-26
CN1871089A (zh) 2006-11-29
DE20316483U1 (de) 2005-03-17
DE502004010213D1 (de) 2009-11-19
US20080314338A1 (en) 2008-12-25
US7770553B2 (en) 2010-08-10

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