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WO2007081033A3 - Electric tool - Google Patents

Electric tool Download PDF

Info

Publication number
WO2007081033A3
WO2007081033A3 PCT/JP2007/050536 JP2007050536W WO2007081033A3 WO 2007081033 A3 WO2007081033 A3 WO 2007081033A3 JP 2007050536 W JP2007050536 W JP 2007050536W WO 2007081033 A3 WO2007081033 A3 WO 2007081033A3
Authority
WO
WIPO (PCT)
Prior art keywords
yoke
magnets
electric tool
dust guard
engaging
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.)
Ceased
Application number
PCT/JP2007/050536
Other languages
French (fr)
Other versions
WO2007081033A2 (en
Inventor
Naoki Tadokoro
Takuma Saito
Shigeru Takahashi
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.)
Koki Holdings Co Ltd
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 WO2007081033A2 publication Critical patent/WO2007081033A2/en
Publication of WO2007081033A3 publication Critical patent/WO2007081033A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
    • H02K7/145—Hand-held machine tool
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D16/00—Portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
    • 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
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/17—Stator cores with permanent magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K23/00—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors
    • H02K23/02—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by arrangement for exciting
    • H02K23/04—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by arrangement for exciting having permanent magnet excitation
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
    • 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
    • B25D2250/091—Electrically-powered tool components
    • B25D2250/095—Electric motors

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Portable Power Tools In General (AREA)
  • Dc Machiner (AREA)

Abstract

The electric tool comprises: a generally cylindrical yoke 31; a plurality of magnets 32 fixed through a circumferential clearance to the inner circumference of said yoke 31; an armature 41 rotatably arranged on the inner side of said yoke 31 through a radial clearance between said yoke 31 and the magnets 32; and a dust guard 33 fitted in one axial end of said yoke 31. The dust guard 33 is equipped integrally with a plurality of engaging protrusions 33b engaging with the circumferential clearance between said magnets 32 in said yoke 31.
PCT/JP2007/050536 2006-01-11 2007-01-10 Electric tool Ceased WO2007081033A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2006003435A JP4367415B2 (en) 2006-01-11 2006-01-11 Electric tool
JP2006-003435 2006-01-11

Publications (2)

Publication Number Publication Date
WO2007081033A2 WO2007081033A2 (en) 2007-07-19
WO2007081033A3 true WO2007081033A3 (en) 2008-06-19

Family

ID=38256723

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2007/050536 Ceased WO2007081033A2 (en) 2006-01-11 2007-01-10 Electric tool

Country Status (2)

Country Link
JP (1) JP4367415B2 (en)
WO (1) WO2007081033A2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009026519A1 (en) 2009-05-27 2010-12-02 Robert Bosch Gmbh Machine tool, in particular hand tool
JP5722156B2 (en) * 2011-08-02 2015-05-20 株式会社マキタ Electric tool
US10786894B2 (en) 2015-10-14 2020-09-29 Black & Decker Inc. Brushless motor system for power tools
JP6827198B2 (en) * 2016-12-07 2021-02-10 パナソニックＩｐマネジメント株式会社 Brushless motors and power tools
JP7159043B2 (en) * 2018-12-28 2022-10-24 株式会社マキタ impact tool

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3147418A1 (en) * 1981-11-30 1983-06-01 Black & Decker Inc Electrical tool, especially a hand tool
DE3922514A1 (en) * 1989-07-08 1991-01-17 Licentia Gmbh Collector cooling arrangement for electrically-powered hand tool - increases flow of air around collector by guidance through ring with spacing commensurate with desired flow
WO2003066262A2 (en) * 2002-02-04 2003-08-14 Milwaukee Electric Tool Corporation Electrical devices including a switched reluctance motor
US20040027010A1 (en) * 2001-03-02 2004-02-12 Hitachi Koko Co., Ltd. Motor-driven tool
DE202004018937U1 (en) * 2003-12-23 2005-02-24 TROY ENTERPRISE CO., LTD., San Chung Motor with wave-shaped housing
EP1575148A1 (en) * 2004-03-10 2005-09-14 Hitachi Koki Co., Ltd. Power tool

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3147418A1 (en) * 1981-11-30 1983-06-01 Black & Decker Inc Electrical tool, especially a hand tool
DE3922514A1 (en) * 1989-07-08 1991-01-17 Licentia Gmbh Collector cooling arrangement for electrically-powered hand tool - increases flow of air around collector by guidance through ring with spacing commensurate with desired flow
US20040027010A1 (en) * 2001-03-02 2004-02-12 Hitachi Koko Co., Ltd. Motor-driven tool
WO2003066262A2 (en) * 2002-02-04 2003-08-14 Milwaukee Electric Tool Corporation Electrical devices including a switched reluctance motor
DE202004018937U1 (en) * 2003-12-23 2005-02-24 TROY ENTERPRISE CO., LTD., San Chung Motor with wave-shaped housing
EP1575148A1 (en) * 2004-03-10 2005-09-14 Hitachi Koki Co., Ltd. Power tool

Also Published As

Publication number Publication date
JP4367415B2 (en) 2009-11-18
WO2007081033A2 (en) 2007-07-19
JP2007185717A (en) 2007-07-26

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