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WO2007077946A3 - Impact tool - Google Patents

Impact tool Download PDF

Info

Publication number
WO2007077946A3
WO2007077946A3 PCT/JP2006/326323 JP2006326323W WO2007077946A3 WO 2007077946 A3 WO2007077946 A3 WO 2007077946A3 JP 2006326323 W JP2006326323 W JP 2006326323W WO 2007077946 A3 WO2007077946 A3 WO 2007077946A3
Authority
WO
WIPO (PCT)
Prior art keywords
housing
counter
vibration
weight
suppressing
Prior art date
Application number
PCT/JP2006/326323
Other languages
French (fr)
Other versions
WO2007077946A2 (en
Inventor
Shinichirou Satou
Takahiro Hirai
Toshihiro Enya
Original Assignee
Hitachi Koki Co., Ltd.
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 Hitachi Koki Co., Ltd. filed Critical Hitachi Koki Co., Ltd.
Publication of WO2007077946A2 publication Critical patent/WO2007077946A2/en
Publication of WO2007077946A3 publication Critical patent/WO2007077946A3/en

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
    • 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
    • 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
    • B25D2217/0088—Arrangements for damping of the reaction force by use of counterweights being mechanically-driven
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/045—Cams used in percussive tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/141—Magnetic parts used in percussive tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/245—Spatial arrangement of components of the tool relative to each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/371—Use of springs

Landscapes

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

Abstract

To provide an impact tool that can effectively absorb the vibration generated by a hammer, a gear housing 30 is composed of a motion-converting housing 31, a vibration-suppressing housing 32, and an impact housing 33. The vibration-suppressing housing 32 is positioned between the impact housing 33 and a motor housing 20. The vibration-suppressing housing 32 has a sub-cylinder 32B, in which a counter-weight unit 53 is arranged. The counter-weight unit 53 includes a counter-weight 50, a second spring 51, and a third spring 52. The counter-weight unit 53 is arranged in a position closer to a cylinder 40 than the gravity center G of the impact tool 1. The counter-weight 50 is arranged in the communication hole 32a of the vibration-suppressing housing 32 and can slide in the hole 32a. The counter-weight 50 slides, with its gravity center G moving in the plane in which the axis of the cylinder 40 and the output shaft 22 exist.
PCT/JP2006/326323 2005-12-28 2006-12-25 Impact tool WO2007077946A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2005-379400 2005-12-28
JP2005379400A JP2007175839A (en) 2005-12-28 2005-12-28 Impact tool

Publications (2)

Publication Number Publication Date
WO2007077946A2 WO2007077946A2 (en) 2007-07-12
WO2007077946A3 true WO2007077946A3 (en) 2010-10-21

Family

ID=37833574

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2006/326323 WO2007077946A2 (en) 2005-12-28 2006-12-25 Impact tool

Country Status (2)

Country Link
JP (1) JP2007175839A (en)
WO (1) WO2007077946A2 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5202997B2 (en) * 2008-03-05 2013-06-05 株式会社マキタ Work tools
US8196674B2 (en) * 2008-03-05 2012-06-12 Makita Corporation Impact tool
GB0804967D0 (en) * 2008-03-18 2008-04-16 Black & Decker Inc Powered hammer with a vibration dampening mechanism
EP2127821B1 (en) * 2008-05-27 2011-04-06 AEG Electric Tools GmbH Electric tool with vibration dampener
DE102009044938A1 (en) * 2009-09-24 2011-03-31 Robert Bosch Gmbh Power tool with a striking mechanism assembly and a balancing mass to compensate for vibrations of the power tool
JP6441588B2 (en) * 2014-05-16 2018-12-19 株式会社マキタ Impact tool
JP6510250B2 (en) * 2015-01-29 2019-05-08 株式会社マキタ Work tools
EP3697574B1 (en) 2017-10-20 2025-03-19 Milwaukee Electric Tool Corporation Percussion tool
US11059155B2 (en) 2018-01-26 2021-07-13 Milwaukee Electric Tool Corporation Percussion tool
WO2019195508A1 (en) 2018-04-04 2019-10-10 Milwaukee Electric Tool Corporation Rotary hammer

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52109673A (en) * 1976-03-12 1977-09-14 Hitachi Koki Co Ltd Vibration preventing apparatus in portable tools
JPH01316179A (en) * 1988-06-17 1989-12-21 Shibaura Eng Works Co Ltd Percussion tool
EP1000712A2 (en) * 1998-11-11 2000-05-17 Metabowerke GmbH & Co. Hammer drilling machine
WO2004082897A1 (en) * 2003-03-21 2004-09-30 Black & Decker Inc Vibration reduction apparatus for power tool and power tool incorporating such apparatus
WO2005105386A1 (en) * 2004-04-30 2005-11-10 Makita Corporation Working tool

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52109673A (en) * 1976-03-12 1977-09-14 Hitachi Koki Co Ltd Vibration preventing apparatus in portable tools
JPH01316179A (en) * 1988-06-17 1989-12-21 Shibaura Eng Works Co Ltd Percussion tool
EP1000712A2 (en) * 1998-11-11 2000-05-17 Metabowerke GmbH & Co. Hammer drilling machine
WO2004082897A1 (en) * 2003-03-21 2004-09-30 Black & Decker Inc Vibration reduction apparatus for power tool and power tool incorporating such apparatus
WO2005105386A1 (en) * 2004-04-30 2005-11-10 Makita Corporation Working tool

Also Published As

Publication number Publication date
JP2007175839A (en) 2007-07-12
WO2007077946A2 (en) 2007-07-12

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