EP1431006A3 - Method of Operating and Cooling Device for the Motor of an Electric Tool - Google Patents

Method of Operating and Cooling Device for the Motor of an Electric Tool Download PDF

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Publication number
EP1431006A3
EP1431006A3 EP20030104751 EP03104751A EP1431006A3 EP 1431006 A3 EP1431006 A3 EP 1431006A3 EP 20030104751 EP20030104751 EP 20030104751 EP 03104751 A EP03104751 A EP 03104751A EP 1431006 A3 EP1431006 A3 EP 1431006A3
Authority
EP
European Patent Office
Prior art keywords
speed
operating
motor
engine
idle
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
EP20030104751
Other languages
German (de)
French (fr)
Other versions
EP1431006A2 (en
EP1431006B1 (en
Inventor
Frank Fritsch
Hermann Schuster
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
Publication of EP1431006A2 publication Critical patent/EP1431006A2/en
Publication of EP1431006A3 publication Critical patent/EP1431006A3/en
Application granted granted Critical
Publication of EP1431006B1 publication Critical patent/EP1431006B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • 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
    • Y10S388/00—Electricity: motor control systems
    • Y10S388/923—Specific feedback condition or device
    • Y10S388/934—Thermal condition
    • 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
    • Y10S388/00—Electricity: motor control systems
    • Y10S388/935—Specific application:
    • Y10S388/937—Hand tool

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
  • Portable Power Tools In General (AREA)
  • Control Of Electric Motors In General (AREA)

Abstract

Erfindungsgegenstand ist ein Betriebsverfahren für den Motor (1) eines Elektrowerkzeugs, dessen Betriebsleerlaufdrehzahl durch eine Regelelektronik (4) auf einen Wert eingestellt wird, der gleich einer gewählten Arbeitsdrehzahl (n1) ist. Erfindungsgemäß wird der Motor nach einer vorgebbaren Leerlaufzeit (ΔT), während der der Motor mit der vorgegebenen Betriebsleerlaufdrehzahl (n1) läuft, zur Kühlung mit einer vorgegebenen erhöhten Leerlaufdrehzahl (n2) betrieben. Die Drehzahl wird sofort wieder auf die Arbeitsdrehzahl (n1) eingestellt, wenn vom Motor zum Zeitpunkt (T3) ein Belastungsmoment verlangt wird, so dass ein komfortables Arbeiten gewährleistet ist.

Figure imgaf001
Subject of the invention is an operating method for the motor (1) of a power tool whose operating idling speed is adjusted by a control electronics (4) to a value which is equal to a selected operating speed (n 1 ). According to the invention, the engine is operated after a predefinable idle time (.DELTA.T), during which the engine with the predetermined idle operating speed (n 1 ), for cooling with a predetermined increased idle speed (n 2 ). The speed is immediately set back to the working speed (n 1 ) when the engine at the time (T 3 ) a load torque is required, so that a comfortable working is guaranteed.
Figure imgaf001
EP03104751.7A 2002-12-18 2003-12-17 Method of Operating and Cooling Device for the Motor of an Electric Tool Expired - Lifetime EP1431006B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10259372A DE10259372A1 (en) 2002-12-18 2002-12-18 Operating method and cooling device for the motor of a power tool
DE10259372 2002-12-18

Publications (3)

Publication Number Publication Date
EP1431006A2 EP1431006A2 (en) 2004-06-23
EP1431006A3 true EP1431006A3 (en) 2014-06-18
EP1431006B1 EP1431006B1 (en) 2015-10-21

Family

ID=32336455

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03104751.7A Expired - Lifetime EP1431006B1 (en) 2002-12-18 2003-12-17 Method of Operating and Cooling Device for the Motor of an Electric Tool

Country Status (4)

Country Link
US (1) US6911793B2 (en)
EP (1) EP1431006B1 (en)
JP (1) JP4450612B2 (en)
DE (1) DE10259372A1 (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI115322B (en) * 2003-09-19 2005-04-15 Vacon Oyj Energy measurement with frequency converter
NZ547208A (en) * 2003-10-28 2009-10-30 Ibex Ind Ltd Powered hand tool
US8657030B2 (en) * 2006-03-03 2014-02-25 Black & Decker Inc. Cordless power tool having multi-speed transmission and constant speed in light torque range
JP5050667B2 (en) * 2007-06-05 2012-10-17 マックス株式会社 Impact tool
US8380457B2 (en) 2007-08-29 2013-02-19 Canon U.S. Life Sciences, Inc. Microfluidic devices with integrated resistive heater electrodes including systems and methods for controlling and measuring the temperatures of such heater electrodes
US7798245B2 (en) 2007-11-21 2010-09-21 Black & Decker Inc. Multi-mode drill with an electronic switching arrangement
US7770660B2 (en) 2007-11-21 2010-08-10 Black & Decker Inc. Mid-handle drill construction and assembly process
US7762349B2 (en) 2007-11-21 2010-07-27 Black & Decker Inc. Multi-speed drill and transmission with low gear only clutch
US7717191B2 (en) 2007-11-21 2010-05-18 Black & Decker Inc. Multi-mode hammer drill with shift lock
US7735575B2 (en) 2007-11-21 2010-06-15 Black & Decker Inc. Hammer drill with hard hammer support structure
US7717192B2 (en) 2007-11-21 2010-05-18 Black & Decker Inc. Multi-mode drill with mode collar
US7854274B2 (en) 2007-11-21 2010-12-21 Black & Decker Inc. Multi-mode drill and transmission sub-assembly including a gear case cover supporting biasing
US8461785B2 (en) 2010-09-14 2013-06-11 Dalwinder Singh Sidhu Speed controller for electric motor
JP6439443B2 (en) * 2014-12-26 2018-12-19 工機ホールディングス株式会社 Working machine
WO2018042389A1 (en) 2016-09-02 2018-03-08 Kongsberg Inc. Techniques for limiting electrical current provided to a motor in an electric power steering system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4430681A (en) * 1980-06-10 1984-02-07 Metabowerke Gmbh & Co. Overload protection arrangement for an electric motor, especially of a hand-held power tool
EP0135613A1 (en) * 1983-09-29 1985-04-03 Kress-elektrik GmbH + Co. Elektromotorenfabrik Method and device for the regulation of an electric motor, by which the number of revolutions under no-load running operation is automatically reduced
US4550277A (en) * 1984-09-24 1985-10-29 Black & Decker Inc. Overload detection and warning system for electric motors in power tools and the like
US5525878A (en) * 1994-09-30 1996-06-11 Itt Automotive Electrical Systems, Inc. Apparatus and method for controlling an electric motor
DE29701358U1 (en) * 1997-01-29 1997-04-17 Lässig, Lothar, 08324 Bockau Power tool

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1097411B (en) * 1978-07-26 1985-08-31 Star Utensili Elett TORQUE LIMITING DEVICE FOR AN ELECTRIC MOTOR, ESPECIALLY FOR PORTABLE TOOL EQUIPMENT
DE4318102A1 (en) * 1993-06-01 1994-12-08 Zahnradfabrik Friedrichshafen Process to avoid overstressing a workpiece during grinding
ES2192022T3 (en) * 1999-09-01 2003-09-16 Ramachandran Ramarathnam PORTABLE ELECTRIC USEFUL.

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4430681A (en) * 1980-06-10 1984-02-07 Metabowerke Gmbh & Co. Overload protection arrangement for an electric motor, especially of a hand-held power tool
EP0135613A1 (en) * 1983-09-29 1985-04-03 Kress-elektrik GmbH + Co. Elektromotorenfabrik Method and device for the regulation of an electric motor, by which the number of revolutions under no-load running operation is automatically reduced
US4550277A (en) * 1984-09-24 1985-10-29 Black & Decker Inc. Overload detection and warning system for electric motors in power tools and the like
US5525878A (en) * 1994-09-30 1996-06-11 Itt Automotive Electrical Systems, Inc. Apparatus and method for controlling an electric motor
DE29701358U1 (en) * 1997-01-29 1997-04-17 Lässig, Lothar, 08324 Bockau Power tool

Also Published As

Publication number Publication date
DE10259372A1 (en) 2004-07-08
EP1431006A2 (en) 2004-06-23
US20040189224A1 (en) 2004-09-30
JP2004195643A (en) 2004-07-15
US6911793B2 (en) 2005-06-28
EP1431006B1 (en) 2015-10-21
JP4450612B2 (en) 2010-04-14

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