EP1952950A3 - Portable power tool with an oscillation damper - Google Patents

Portable power tool with an oscillation damper Download PDF

Info

Publication number
EP1952950A3
EP1952950A3 EP08100787A EP08100787A EP1952950A3 EP 1952950 A3 EP1952950 A3 EP 1952950A3 EP 08100787 A EP08100787 A EP 08100787A EP 08100787 A EP08100787 A EP 08100787A EP 1952950 A3 EP1952950 A3 EP 1952950A3
Authority
EP
European Patent Office
Prior art keywords
power tool
portable power
oscillation damper
housing
absorber
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
EP08100787A
Other languages
German (de)
French (fr)
Other versions
EP1952950B1 (en
EP1952950A2 (en
Inventor
Franz Mössnang
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 EP1952950A2 publication Critical patent/EP1952950A2/en
Publication of EP1952950A3 publication Critical patent/EP1952950A3/en
Application granted granted Critical
Publication of EP1952950B1 publication Critical patent/EP1952950B1/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
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/24—Damping the reaction force
    • 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
    • B25D17/06—Hammer pistons; Anvils ; Guide-sleeves for pistons
    • 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
    • B25D2211/06—Means for driving the impulse member
    • B25D2211/068—Crank-actuated impulse-driving mechanisms
    • 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
    • B25D2217/0011—Details of anvils, guide-sleeves or pistons
    • B25D2217/0019—Guide-sleeves
    • 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
    • B25D2217/0073—Arrangements for damping of the reaction force
    • B25D2217/0076—Arrangements for damping of the reaction force by use of counterweights
    • B25D2217/0092—Arrangements for damping of the reaction force by use of counterweights being spring-mounted

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)

Abstract

Eine Handwerkzeugmaschine (1) mit einem Gehäuse (2) und einem Luftfederschlagwerk (3) mit einem Schlagkolben (4), welcher auf einen Döpper (5) schlägt, weist zumindest einen Schwingungstilger (6) mit einer schwingbaren Tilgermasse (7) auf, welche über zumindest eine Feder (8a) zum Gehäuse (2) axial druckvorgespannt ist, wobei der Schwingungstilger (6) über ein axial versetzbares Erregungsmittel (9) aktiv vom sich in Arbeitsposition befindenden Döpper (5) erregbar ist.

Figure imgaf001
A hand tool (1) with a housing (2) and an air spring impact (3) with a percussion piston (4) which strikes an anvil (5) has at least one vibration absorber (6) with a swingable absorber mass (7), which via at least one spring (8a) to the housing (2) is axially pressure-biased, wherein the vibration damper (6) via an axially displaceable excitation means (9) is actively excitable from the striker in the working position (5).
Figure imgaf001
EP08100787.4A 2007-01-31 2008-01-23 Portable power tool with an oscillation damper Active EP1952950B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007000059A DE102007000059A1 (en) 2007-01-31 2007-01-31 Hand tool with vibration absorber

Publications (3)

Publication Number Publication Date
EP1952950A2 EP1952950A2 (en) 2008-08-06
EP1952950A3 true EP1952950A3 (en) 2012-11-07
EP1952950B1 EP1952950B1 (en) 2014-04-09

Family

ID=39145006

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08100787.4A Active EP1952950B1 (en) 2007-01-31 2008-01-23 Portable power tool with an oscillation damper

Country Status (5)

Country Link
US (1) US7712548B2 (en)
EP (1) EP1952950B1 (en)
JP (1) JP5189373B2 (en)
CN (1) CN101235869B (en)
DE (1) DE102007000059A1 (en)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4647957B2 (en) 2004-08-27 2011-03-09 株式会社マキタ Work tools
JP4573637B2 (en) * 2004-12-02 2010-11-04 株式会社マキタ Reciprocating work tool
JP4965333B2 (en) * 2007-05-14 2012-07-04 株式会社マキタ Impact tool
JP4965334B2 (en) * 2007-05-14 2012-07-04 株式会社マキタ Impact tool
US8485274B2 (en) * 2007-05-14 2013-07-16 Makita Corporation Impact tool
US7806201B2 (en) 2007-07-24 2010-10-05 Makita Corporation Power tool with dynamic vibration damping
JP5269566B2 (en) * 2008-12-03 2013-08-21 株式会社マキタ Work tools
JP5294826B2 (en) * 2008-12-19 2013-09-18 株式会社マキタ Impact tool
JP5361504B2 (en) * 2009-04-10 2013-12-04 株式会社マキタ Impact tool
DE102009022088A1 (en) 2009-05-20 2010-11-25 Friedrich Duss Maschinenfabrik Gmbh & Co.Kg Electric power tool, in particular hand-operated hammer drill
DE102009027422A1 (en) * 2009-07-02 2011-01-05 Robert Bosch Gmbh Device for reducing and / or compensating vibrations, in particular for a handheld power tool and for use in handheld power tools
DE102009047106A1 (en) * 2009-11-25 2011-05-26 Robert Bosch Gmbh Variation of the natural frequency of vibrating means in power tools
DE102009054723A1 (en) * 2009-12-16 2011-06-22 Robert Bosch GmbH, 70469 Hand tool
DE102010030026A1 (en) * 2010-06-14 2012-02-23 Robert Bosch Gmbh striking mechanism
DE102010040173A1 (en) * 2010-09-02 2012-03-08 Hilti Aktiengesellschaft Hand tool
DE102011007725A1 (en) * 2011-04-20 2012-10-25 Hilti Aktiengesellschaft Hand tool and absorber
US8752811B2 (en) * 2011-11-11 2014-06-17 Fives Machining Systems, Inc. Symmetrical head mounted tuned mass damper
DE102012203757A1 (en) * 2012-03-09 2013-09-12 Robert Bosch Gmbh Hand machine tool device
FI123928B (en) * 2012-09-06 2013-12-31 Robit Rocktools Ltd Procedure for exploring boreholes, bore arrangements, and borehole survey composition
CN104870145B (en) * 2012-12-17 2017-09-29 斯威尔Ivf股份有限公司 Impulse machine
US10232500B2 (en) 2012-12-17 2019-03-19 Swerea Ivf Ab Impact machine
EP3626398A1 (en) 2018-09-19 2020-03-25 Hilti Aktiengesellschaft Forcibly energised biharmonic damper

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1464449A2 (en) * 2003-04-01 2004-10-06 Makita Corporation Power tool
WO2005105386A1 (en) * 2004-04-30 2005-11-10 Makita Corporation Working tool
EP1710052A1 (en) * 2003-03-21 2006-10-11 Black & Decker, Inc. Vibration reduction apparatus for power tool and power tool incorporating such apparatus

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL54623C (en) * 1935-05-06 1945-06-15
DE815179C (en) 1949-11-17 1951-10-01 Franz Dr-Ing Bollenrath Pneumatic hammer with mass balancing
US2875731A (en) * 1956-03-23 1959-03-03 Buckeye Steel Castings Co Vibration absorbers for reciprocating tools
US3845827A (en) * 1971-08-05 1974-11-05 Stihl Maschf Andreas Portable implement,especially motor chain saw
FR2237734A1 (en) 1973-07-16 1975-02-14 Inst Nal Rech Securite Oscillating mass shock absorbers for pneumatic drill - two sliding masses sprung above and below flank drill casing
JPS54127080A (en) * 1978-03-25 1979-10-02 Makoto Nandate Vibration isolation device in handle of machine in which vibration is formed
DE3122979A1 (en) 1981-06-10 1983-01-05 Hilti AG, 9494 Schaan DRILLING OR CHISEL HAMMER
JP3574240B2 (en) * 1995-11-13 2004-10-06 株式会社マキタ Hammer drill
GB0109747D0 (en) * 2001-04-20 2001-06-13 Black & Decker Inc Hammer
JP4016772B2 (en) * 2001-11-16 2007-12-05 日立工機株式会社 Hammer drill
JP4155857B2 (en) * 2003-04-01 2008-09-24 株式会社マキタ Work tools
DE10332109B4 (en) * 2003-07-15 2009-01-15 Wacker Construction Equipment Ag Implement with handle cushioning
JP4647957B2 (en) 2004-08-27 2011-03-09 株式会社マキタ Work tools

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1710052A1 (en) * 2003-03-21 2006-10-11 Black & Decker, Inc. Vibration reduction apparatus for power tool and power tool incorporating such apparatus
EP1464449A2 (en) * 2003-04-01 2004-10-06 Makita Corporation Power tool
WO2005105386A1 (en) * 2004-04-30 2005-11-10 Makita Corporation Working tool

Also Published As

Publication number Publication date
CN101235869A (en) 2008-08-06
JP2008188760A (en) 2008-08-21
JP5189373B2 (en) 2013-04-24
EP1952950B1 (en) 2014-04-09
DE102007000059A1 (en) 2008-09-18
EP1952950A2 (en) 2008-08-06
US20080185165A1 (en) 2008-08-07
CN101235869B (en) 2011-05-25
US7712548B2 (en) 2010-05-11

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