EP2476520A3 - Electric machine tool, in particular a grinding or polishing machine - Google Patents

Electric machine tool, in particular a grinding or polishing machine Download PDF

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Publication number
EP2476520A3
EP2476520A3 EP11189077A EP11189077A EP2476520A3 EP 2476520 A3 EP2476520 A3 EP 2476520A3 EP 11189077 A EP11189077 A EP 11189077A EP 11189077 A EP11189077 A EP 11189077A EP 2476520 A3 EP2476520 A3 EP 2476520A3
Authority
EP
European Patent Office
Prior art keywords
housing
air
drive
electric machine
inlet opening
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
EP11189077A
Other languages
German (de)
French (fr)
Other versions
EP2476520B1 (en
EP2476520A2 (en
Inventor
Jan Schulze
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.)
Metabowerke GmbH and Co
Original Assignee
Metabowerke GmbH and Co
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=43799337&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2476520(A3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Metabowerke GmbH and Co filed Critical Metabowerke GmbH and Co
Publication of EP2476520A2 publication Critical patent/EP2476520A2/en
Publication of EP2476520A3 publication Critical patent/EP2476520A3/en
Application granted granted Critical
Publication of EP2476520B1 publication Critical patent/EP2476520B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B25F5/008—Cooling means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/02—Equipment for cooling the grinding surfaces, e.g. devices for feeding coolant

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Portable Power Tools In General (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)

Abstract

Elektrowerkzeugmaschine (10), insbesondere eine Schleif- oder Poliermaschine, umfassend ein Gehäuse (16), in dem ein Antrieb, eine Lüftereinheit sowie eine Elektronikeinrichtung (32) aufgenommen sind, wobei mit Hilfe der Lüftereinheit ein Luftstrom (LU) zur Kühlung des Antriebs erzeugbar ist, indem Umgebungsluft durch wenigstens eine Lufteinlassöffnung (68) in das Gehäuse (16) eingezogen wird, wobei innerhalb des Gehäuses (16) wenigstens ein Luftkanal (66) ausgebildet ist, der sich in Strömungsrichtung des Luftstroms (LU) von der Lufteinlassöffnung (68) bis zu dem Antrieb erstreckt und eine gerichtete Luftzuführung zu dem Antrieb hin ermöglicht, wobei die Lufteinlassöffnung (68) in einem endseitigen Bereich der Elektrowerkzeugmaschine (10) angeordnet ist, der bei einer Bearbeitung eines Werkstücks mit der Elektrowerkzeugmaschine (10) von dem zu bearbeitenden Werkstück abgewandt ist, und dass das Gehäuse (16) zumindest abschnittweise doppelwandig mit einer Gehäuseinnenwand (50) und einer dazu beabstandeten Gehäuseaußenwand (40) ausgebildet ist, wobei der Luftkanal (66) durch die Gehäuseaußenwand (40) und die Gehäuseinnenwand (50) begrenzt ist und wobei das Gehäuse (16) mehrteilig ausgebildet ist und wenigstens zwei Halbschalen (161, 162) umfasst.

Figure imgaf001
Electric machine tool (10), in particular a grinding or polishing machine, comprising a housing (16) in which a drive, a fan unit and an electronic device (32) are accommodated, wherein an air flow (LU) for cooling the drive can be generated with the aid of the fan unit in that ambient air is drawn into the housing (16) through at least one air inlet opening (68), inside the housing (16) at least one air channel (66) being formed in the flow direction of the air flow (LU) from the air inlet opening (68) extends to the drive and allows a directed air supply to the drive out, wherein the air inlet opening (68) in an end region of the electric machine tool (10) is arranged, which when machining a workpiece with the power tool (10) of the machined Workpiece is remote, and that the housing (16) at least partially double-walled with a Gehäuseinnenwa nd (50) and a housing outer wall (40) spaced therefrom, wherein the air duct (66) is bounded by the housing outer wall (40) and the housing inner wall (50) and wherein the housing (16) is designed in several parts and at least two half-shells ( 16 1 , 16 2 ).
Figure imgaf001
EP11189077.8A 2011-01-13 2011-11-15 Electric machine tool, in particular a grinding or polishing machine Active EP2476520B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202011001475U DE202011001475U1 (en) 2011-01-13 2011-01-13 Power tool, in particular a grinding or polishing machine

Publications (3)

Publication Number Publication Date
EP2476520A2 EP2476520A2 (en) 2012-07-18
EP2476520A3 true EP2476520A3 (en) 2012-08-29
EP2476520B1 EP2476520B1 (en) 2016-04-06

Family

ID=43799337

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11189077.8A Active EP2476520B1 (en) 2011-01-13 2011-11-15 Electric machine tool, in particular a grinding or polishing machine

Country Status (4)

Country Link
US (1) US20120184191A1 (en)
EP (1) EP2476520B1 (en)
CN (1) CN102581768B (en)
DE (1) DE202011001475U1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130299207A1 (en) * 2012-05-10 2013-11-14 Black & Decker, Inc. Power tool cooling
DE102014105107A1 (en) 2014-04-10 2015-10-15 Metabowerke Gmbh Switch arrangement for a powered hand tool machine
US9475172B2 (en) 2014-07-15 2016-10-25 Milwaukee Electric Tool Corporation Adjustable guard for power tool
DE102016210853A1 (en) * 2016-06-17 2017-12-21 Robert Bosch Gmbh Hand tool with a cooling unit
DE102018217155A1 (en) * 2018-10-08 2020-04-09 Robert Bosch Gmbh Hand tool
USD914071S1 (en) 2018-11-02 2021-03-23 Esab Ab Welding device enclosure
US12021437B2 (en) 2019-06-12 2024-06-25 Milwaukee Electric Tool Corporation Rotary power tool
CN112366876A (en) * 2020-11-20 2021-02-12 江苏铁锚工具股份有限公司 Split type AC/DC brushless tool

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2452268A (en) * 1945-06-29 1948-10-26 Schumann Robert Motor hand tool assembly
US5099160A (en) * 1988-07-16 1992-03-24 Robert Bosch Gmbh Powered hand tool having an enclosed-ventilated drive motor
US20020040229A1 (en) * 2000-09-24 2002-04-04 Medtronic, Inc. Liquid cooled, powered surgical handpiece
GB2383007A (en) * 2001-12-14 2003-06-18 Bosch Gmbh Robert Improvements to a hand tool machine.
DE10347943A1 (en) * 2003-10-15 2005-05-19 Robert Bosch Gmbh Power tool
EP1674213A1 (en) * 2004-12-23 2006-06-28 BLACK & DECKER INC. Power tool cooling
DE102006000084A1 (en) * 2006-02-20 2007-08-23 Hilti Ag Electric hand tool comprises openings provided on a separating element for releasing a delimited cord passage region from a pressure region in the suction region
DE102007017243A1 (en) * 2007-04-12 2008-10-16 Robert Bosch Gmbh Machine tool, in particular hand tool
DE102007039828B3 (en) * 2007-08-23 2008-11-20 Robert Bosch Gmbh Electric hand-held machine tool, particularly hammer drill, has housing, in which motor is arranged and blower is coupled to motor and has extendable and retractable accumulators over guide rails
DE102008000613A1 (en) * 2008-03-12 2009-09-17 Robert Bosch Gmbh Hand tool
WO2009145206A2 (en) * 2008-05-29 2009-12-03 Hitachi Koki Co., Ltd. Electric power tool

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1016504B1 (en) 1998-12-31 2005-01-19 C. & E. Fein GmbH Electric power tool, especially an angle grinder
CN2455441Y (en) * 2000-12-27 2001-10-24 车王电子股份有限公司 Safety device for replacing sand wheel of hand abrader
DE10261572A1 (en) * 2002-12-23 2004-07-01 Robert Bosch Gmbh Electric hand tool machine e.g. drill, has arrangement for generating additional cooling air flow that passes at least one machine component outside or in low flow region of cooling air flow
US7597157B2 (en) * 2004-09-24 2009-10-06 Robert Bosch Gmbh Electric power tool having cooling conduits
DE102006038756A1 (en) 2006-08-17 2008-02-21 Marquardt Gmbh Power tool e.g. drilling machine, has fixed and/or flexible air channel, which is arranged in housing and directs air flow and/or distributing air flow to cool heat source, where one end of air channel is turned towards fan wheel
DE102007000290A1 (en) * 2007-05-24 2008-11-27 Hilti Aktiengesellschaft Electric hand tool with electronic cooling
US7770660B2 (en) * 2007-11-21 2010-08-10 Black & Decker Inc. Mid-handle drill construction and assembly process
DE102008041370A1 (en) 2008-08-20 2010-02-25 Robert Bosch Gmbh power tool
DE102009012177A1 (en) 2009-02-27 2010-09-02 Andreas Stihl Ag & Co. Kg Battery operated, handheld electrical appliance
CN201371408Y (en) * 2009-03-06 2009-12-30 姜卫亮 Angle grinder
DE102010031274B4 (en) * 2009-12-18 2023-06-22 Robert Bosch Gmbh Hand tool with gear cooling

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2452268A (en) * 1945-06-29 1948-10-26 Schumann Robert Motor hand tool assembly
US5099160A (en) * 1988-07-16 1992-03-24 Robert Bosch Gmbh Powered hand tool having an enclosed-ventilated drive motor
US20020040229A1 (en) * 2000-09-24 2002-04-04 Medtronic, Inc. Liquid cooled, powered surgical handpiece
GB2383007A (en) * 2001-12-14 2003-06-18 Bosch Gmbh Robert Improvements to a hand tool machine.
DE10347943A1 (en) * 2003-10-15 2005-05-19 Robert Bosch Gmbh Power tool
EP1674213A1 (en) * 2004-12-23 2006-06-28 BLACK & DECKER INC. Power tool cooling
DE102006000084A1 (en) * 2006-02-20 2007-08-23 Hilti Ag Electric hand tool comprises openings provided on a separating element for releasing a delimited cord passage region from a pressure region in the suction region
DE102007017243A1 (en) * 2007-04-12 2008-10-16 Robert Bosch Gmbh Machine tool, in particular hand tool
DE102007039828B3 (en) * 2007-08-23 2008-11-20 Robert Bosch Gmbh Electric hand-held machine tool, particularly hammer drill, has housing, in which motor is arranged and blower is coupled to motor and has extendable and retractable accumulators over guide rails
DE102008000613A1 (en) * 2008-03-12 2009-09-17 Robert Bosch Gmbh Hand tool
WO2009145206A2 (en) * 2008-05-29 2009-12-03 Hitachi Koki Co., Ltd. Electric power tool

Also Published As

Publication number Publication date
CN102581768A (en) 2012-07-18
US20120184191A1 (en) 2012-07-19
EP2476520B1 (en) 2016-04-06
EP2476520A2 (en) 2012-07-18
CN102581768B (en) 2015-07-22
DE202011001475U1 (en) 2011-03-17

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