EP1302281B1 - Kühlluftleitung für ein Elektrohandwerkzeuggerät mit elektropneumatischem Schlagwerk - Google Patents

Kühlluftleitung für ein Elektrohandwerkzeuggerät mit elektropneumatischem Schlagwerk Download PDF

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Publication number
EP1302281B1
EP1302281B1 EP01811005A EP01811005A EP1302281B1 EP 1302281 B1 EP1302281 B1 EP 1302281B1 EP 01811005 A EP01811005 A EP 01811005A EP 01811005 A EP01811005 A EP 01811005A EP 1302281 B1 EP1302281 B1 EP 1302281B1
Authority
EP
European Patent Office
Prior art keywords
cooling
hand tool
cooling air
air duct
air
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
EP01811005A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1302281A1 (de
Inventor
Ferdinand Kristen
Hubert Daxenberg
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.)
Hilti AG
Original Assignee
Hilti AG
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 Hilti AG filed Critical Hilti AG
Priority to EP01811005A priority Critical patent/EP1302281B1/de
Priority to DE50112450T priority patent/DE50112450D1/de
Priority to AT01811005T priority patent/ATE361182T1/de
Priority to CN02146822.2A priority patent/CN1411959A/zh
Priority to PL356629A priority patent/PL203191B1/pl
Priority to JP2002300498A priority patent/JP2003165073A/ja
Priority to US10/270,940 priority patent/US6776245B2/en
Publication of EP1302281A1 publication Critical patent/EP1302281A1/de
Application granted granted Critical
Publication of EP1302281B1 publication Critical patent/EP1302281B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/20—Devices for cleaning or cooling tool or work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2211/00—Details of portable percussive tools with electromotor or other motor drive
    • B25D2211/003—Crossed drill and motor spindles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2217/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D2217/0057—Details related to cleaning or cooling the tool or workpiece
    • B25D2217/0061—Details related to cleaning or cooling the tool or workpiece related to cooling
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S173/00—Tool driving or impacting
    • Y10S173/02—Sound muffling

Definitions

  • the invention relates to an at least partially beating electric hand tool device, such as a hammer drill, combi and chisel hammer, with electro-pneumatic striking mechanism preferably for hitting abrasive removal of rock.
  • electric hand tool devices generate from electrical energy by means of an electric motor and suitable mechanical transformation of an axial, hitting swinging and optionally additionally a superimposed rotating movement, which is transmitted to the appropriate use a tool force and form fit.
  • DE19626254A1 cool electric hand tool devices by means of the sucked by a cooling fan of the electric motor through air openings in the housing cooling air, which is pressed by the pneumatic percussion and cavities between the percussion unit and the machine housing, and the percussion.
  • DE19600339C1 forms a striking hand tool between the outer housing and the assemblies of the drive and transmission various air channels.
  • a movable guide tube of a beating hand tool is thermally insulated via an air gap to the outer housing.
  • DE3405922 has a striking hand tool on a percussion unit, which is movable separately within the vibration damped mounted outer housing with the handle attached thereto.
  • the object of the invention is the realization of a well-cooled, vibration-dampened in the outer housing movable striking mechanism of an electric hand tool.
  • an at least partially striking electric hand tool device with an electro-pneumatic percussion in a percussion unit which in a, air openings for a cooling fan having outer housing is vibration-dampened, at least one attached to the percussion unit cooling air line to the cooling fan.
  • the cooling air line is connected at the end to at least one, substantially annular cooling, airflow-conducting cooling ring, whereby the impact mechanism is substantially uniformly circumferentially coolable.
  • the cooling ring has circumferentially distributed annular openings, whereby the cooling air flow flowing into the cooling ring via air openings in the outer housing is distributed circumferentially.
  • Fig. 1 the striking along an axis A electric hand tool 1 an electropneumatic percussion 2 in a percussion unit 3, which is vibration damped in an air openings 4 for a cooling fan 5, outer housing 6 by an elastic suspension, wherein on the percussion unit 3 a cooling air duct 7 is attached to the cooling fan 5.
  • the cooling air line 7 is connected at the end to an annular cooling airflow-conducting cooling ring 8, which is fastened near a gas spring 9 of the impact mechanism 2.
  • the cooling ring 8 has circumferentially distributed ring openings 10, which are arranged near the air openings 4 in the outer housing 6, through which the air flow 11 via the cooling air line 7 to the electric motor 12, further to the cooling fan 5 and behind this to the air outlet openings 13 in the outer housing 6, without it can cause a return flow 14 to an air short circuit.
  • the cooling rim 8 which is concentrically mounted on the percussion unit 3, has circumferentially distributed rim openings 10, which are connected to the cooling air line 7 via an annular channel 15.
  • the air flow 11 enters via the, the rim openings 10 spatially associated, air openings 4 in the outer housing 6 in the cooling air line 7 a.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
EP01811005A 2001-10-15 2001-10-15 Kühlluftleitung für ein Elektrohandwerkzeuggerät mit elektropneumatischem Schlagwerk Expired - Lifetime EP1302281B1 (de)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP01811005A EP1302281B1 (de) 2001-10-15 2001-10-15 Kühlluftleitung für ein Elektrohandwerkzeuggerät mit elektropneumatischem Schlagwerk
DE50112450T DE50112450D1 (de) 2001-10-15 2001-10-15 Kühlluftleitung für ein Elektrohandwerkzeuggerät mit elektropneumatischem Schlagwerk
AT01811005T ATE361182T1 (de) 2001-10-15 2001-10-15 Kühlluftleitung für ein elektrohandwerkzeuggerät mit elektropneumatischem schlagwerk
CN02146822.2A CN1411959A (zh) 2001-10-15 2002-10-11 具有电风动冲击工具的手持电动工具机
PL356629A PL203191B1 (pl) 2001-10-15 2002-10-14 Urządzenie ręczne z elektrycznie napędzanym narzędziem i elektropneumatycznym mechanizmem uderzeniowym
JP2002300498A JP2003165073A (ja) 2001-10-15 2002-10-15 電動手工具装置
US10/270,940 US6776245B2 (en) 2001-10-15 2002-10-15 Electrical hand-held power tool with an electropneumatic percussion mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP01811005A EP1302281B1 (de) 2001-10-15 2001-10-15 Kühlluftleitung für ein Elektrohandwerkzeuggerät mit elektropneumatischem Schlagwerk

Publications (2)

Publication Number Publication Date
EP1302281A1 EP1302281A1 (de) 2003-04-16
EP1302281B1 true EP1302281B1 (de) 2007-05-02

Family

ID=8184189

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01811005A Expired - Lifetime EP1302281B1 (de) 2001-10-15 2001-10-15 Kühlluftleitung für ein Elektrohandwerkzeuggerät mit elektropneumatischem Schlagwerk

Country Status (7)

Country Link
US (1) US6776245B2 (zh)
EP (1) EP1302281B1 (zh)
JP (1) JP2003165073A (zh)
CN (1) CN1411959A (zh)
AT (1) ATE361182T1 (zh)
DE (1) DE50112450D1 (zh)
PL (1) PL203191B1 (zh)

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* Cited by examiner, † Cited by third party
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US8047302B2 (en) * 2001-12-21 2011-11-01 Wacker Neuson Produktion GmbH & Co. KG Drilling and/or striking hammer with a lubricating device
GB2385017B (en) * 2002-02-08 2005-06-29 Black & Decker Inc Drilling and/or hammering tool
DE10302089B3 (de) * 2003-01-17 2004-10-14 Hilti Ag Schlagende Elektrohandwerkzeugmaschine mit einem Piezoaktor
DE10326472B4 (de) * 2003-06-12 2006-03-09 Hilti Ag Verbindungselement zum Verbinden eines Handgriffs mit einem Gehäuseteil und einem Getriebegehäuse eines Elektrohandgeräts
AU2004284018C1 (en) * 2003-10-28 2010-10-07 Ibex Industries Limited Powered hand tool
DE10357758A1 (de) * 2003-12-10 2005-07-21 Wacker Construction Equipment Ag Aufbruch- und/oder Bohrhammer mit linear geführter Griffeinrichtung
DE102004029220B4 (de) * 2004-06-16 2006-03-23 Hilti Ag Handwerkzeuggerät mit Staubabsaugmodul
EP1637288B1 (de) 2004-09-16 2014-08-13 HILTI Aktiengesellschaft Vibrationsgedämpftes Elektrohandwerkzeug
DE102004047606A1 (de) * 2004-09-30 2006-04-06 Hilti Ag Bohr- und/oder Meisselhammer
DE102004058696A1 (de) * 2004-12-06 2006-06-08 Hilti Ag Elektrowerkzeuggerät
EP1674213B1 (en) * 2004-12-23 2008-10-01 BLACK & DECKER INC. Power tool cooling
EP1674211A1 (en) * 2004-12-23 2006-06-28 BLACK & DECKER INC. Power tool housing
ATE396841T1 (de) * 2004-12-23 2008-06-15 Black & Decker Inc Kraftwerkzeuggehäuse
EP1674212B1 (en) 2004-12-23 2008-05-28 BLACK & DECKER INC. Power tool housing
GB0428210D0 (en) * 2004-12-23 2005-01-26 Black & Decker Inc Mode change mechanism
DE102005007546A1 (de) * 2005-02-18 2006-08-24 Robert Bosch Gmbh Elektrowerkzeugmaschine
DE102005007545B4 (de) * 2005-02-18 2019-01-31 Robert Bosch Gmbh Vorrichtung und Verfahren zur Kühlung einer Elektronik
JP4742613B2 (ja) * 2005-02-24 2011-08-10 マックス株式会社 ドリル工具
DE102005000018A1 (de) * 2005-03-07 2006-09-14 Hilti Ag Vorsatzgerät
DE102005047353A1 (de) * 2005-10-04 2007-04-05 Robert Bosch Gmbh Elektrowerkzeugmaschine
DE102005052428B4 (de) * 2005-11-03 2015-06-18 Robert Bosch Gmbh Elektrowerkzeugmaschine
DE102006000162A1 (de) * 2006-04-06 2007-10-11 Hilti Ag Elektrohandwerkzeugmaschine mit internem Kühlgebläse
DE102006000209A1 (de) * 2006-05-05 2007-11-15 Hilti Ag Handwerkzeugmaschine mit Schlagwerkzeugaufnahme
DE102006000253A1 (de) * 2006-05-30 2007-12-06 Hilti Ag Schlagende Handwerkzeugmaschine mit axial beweglich gelagertem Schlagwerk
DE102006061627A1 (de) * 2006-12-27 2008-07-10 Robert Bosch Gmbh Schlagwerk einer Elektrohandwerkzeugmaschine
DE102007000290A1 (de) * 2007-05-24 2008-11-27 Hilti Aktiengesellschaft Elektrisches Handwerkzeuggerät mit Elektronikkühlung
JP5013314B2 (ja) * 2007-06-18 2012-08-29 日立工機株式会社 電動工具
US7806201B2 (en) * 2007-07-24 2010-10-05 Makita Corporation Power tool with dynamic vibration damping
JP5128390B2 (ja) * 2008-07-03 2013-01-23 株式会社マキタ ハンマードリル
JP5416397B2 (ja) * 2008-12-19 2014-02-12 株式会社マキタ 作業工具
JP5361504B2 (ja) * 2009-04-10 2013-12-04 株式会社マキタ 打撃工具
DE102009045799A1 (de) * 2009-10-19 2011-05-12 Robert Bosch Gmbh Werkzeugmaschine und Verfahren zur Kühlung einer Werkzeugmaschine
DE102010031274B4 (de) * 2009-12-18 2023-06-22 Robert Bosch Gmbh Handwerkzeugmaschine mit Kühlung des Getriebes
JP5428848B2 (ja) * 2009-12-25 2014-02-26 日立工機株式会社 電動工具
JP5502458B2 (ja) * 2009-12-25 2014-05-28 株式会社マキタ 打撃工具
DE102010004724A1 (de) * 2010-01-15 2011-07-21 Wacker Neuson SE, 80809 Bohr- und/oder Schlaghammer mit Kühlung von Gerätekomponenten
DE102010004723A1 (de) * 2010-01-15 2011-07-21 Wacker Neuson SE, 80809 Bohr- und/oder Schlaghammer mit Freikonvektions-Kühlung
JP5496812B2 (ja) * 2010-08-03 2014-05-21 株式会社マキタ 作業工具
EP2682214B1 (en) * 2011-02-28 2019-06-26 Makita Corporation Portable circular saw comprising an outer rotor type brushless electric motor
US8348727B2 (en) * 2011-05-26 2013-01-08 Black & Decker Inc. Airflow arrangement for a power tool
FR2979562B1 (fr) * 2011-09-02 2013-09-20 Mbh Dev Dispositif a moteur electrique avec circuit de refroidissement integre pour la commande d'outils
DE102013204985A1 (de) * 2013-03-21 2014-10-09 Robert Bosch Gmbh Handwerkzeugmaschine
JP6085225B2 (ja) 2013-06-27 2017-02-22 株式会社マキタ ネジ締め電動工具
EP2848370A1 (de) 2013-09-12 2015-03-18 HILTI Aktiengesellschaft Handwerkzeugmaschine
US20150151424A1 (en) 2013-10-29 2015-06-04 Black & Decker Inc. Power tool with ergonomic handgrip
USD725981S1 (en) 2013-10-29 2015-04-07 Black & Decker Inc. Screwdriver with nosepiece
WO2015079645A2 (en) * 2013-11-26 2015-06-04 Hitachi Koki Co., Ltd. Electrical power tool
JP6258093B2 (ja) * 2014-03-24 2018-01-10 株式会社マキタ 打撃工具
US11167403B2 (en) * 2014-08-29 2021-11-09 Koki Holdings Co., Ltd. Electric working machine
DE102015226085A1 (de) * 2015-12-18 2017-06-22 Robert Bosch Gmbh Handwerkzeugmaschine mit einer Schalteinheit
EP3697574A1 (en) 2017-10-20 2020-08-26 Milwaukee Electric Tool Corporation Percussion tool
WO2019147919A1 (en) 2018-01-26 2019-08-01 Milwaukee Electric Tool Corporation Percussion tool
JP7229807B2 (ja) * 2019-02-21 2023-02-28 株式会社マキタ 電動工具
US11919141B2 (en) 2019-08-27 2024-03-05 Ingersoll-Rand Industrial U.S., Inc. Tool with wireless switch
US11931878B2 (en) 2019-08-27 2024-03-19 Ingersoll-Rand Industrial U.S., Inc. Quick change auxiliary handle for power tool
US11845168B2 (en) * 2019-11-01 2023-12-19 Makita Corporation Reciprocating tool
US11897112B2 (en) 2020-11-03 2024-02-13 Ingersoll-Rand Industrial U.S., Inc. Power tool with fan duct for printed circuit board
GB2619018A (en) * 2022-05-23 2023-11-29 Black & Decker Inc Power tool
EP4331775A1 (de) * 2022-08-29 2024-03-06 Hilti Aktiengesellschaft Werkzeugmaschine mit einer abschotteinrichtung

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DE19924552A1 (de) * 1999-05-28 2000-11-30 Hilti Ag Elektrisch betreibbares Handgerät

Also Published As

Publication number Publication date
PL203191B1 (pl) 2009-09-30
EP1302281A1 (de) 2003-04-16
ATE361182T1 (de) 2007-05-15
JP2003165073A (ja) 2003-06-10
PL356629A1 (en) 2003-04-22
CN1411959A (zh) 2003-04-23
US20030070823A1 (en) 2003-04-17
DE50112450D1 (de) 2007-06-14
US6776245B2 (en) 2004-08-17

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