JP2007090503A5 - - Google Patents

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Publication number
JP2007090503A5
JP2007090503A5 JP2005285742A JP2005285742A JP2007090503A5 JP 2007090503 A5 JP2007090503 A5 JP 2007090503A5 JP 2005285742 A JP2005285742 A JP 2005285742A JP 2005285742 A JP2005285742 A JP 2005285742A JP 2007090503 A5 JP2007090503 A5 JP 2007090503A5
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JP
Japan
Prior art keywords
counterweight
shaft
motion
plunger
rigid body
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
JP2005285742A
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Japanese (ja)
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JP4529858B2 (en
JP2007090503A (en
Filing date
Publication date
Application filed filed Critical
Priority to JP2005285742A priority Critical patent/JP4529858B2/en
Priority claimed from JP2005285742A external-priority patent/JP4529858B2/en
Publication of JP2007090503A publication Critical patent/JP2007090503A/en
Publication of JP2007090503A5 publication Critical patent/JP2007090503A5/ja
Application granted granted Critical
Publication of JP4529858B2 publication Critical patent/JP4529858B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Claims (2)

モータを内蔵するハウジングと、
該ハウジングの一端に接続されたギヤケースと、
該ハウジングに回転可能に取付けられ、該モータにより回転駆動されるセカンドシャフトと、
該ギヤケースに往復動可能な如く取付けられるプランジャと、
該セカンドシャフトの回転運動を該プランジャの往復運動に変換するための運動変換手段とを有する電動工具において、
該セカンドシャフトの外周に複数の半円形状の溝を設け、該複数の溝内を球形剛体が回動可能とし、
運動軌道としカウンタウエイトを該プランジャの往復運動と逆位相に駆動させ、
該球形剛体が該複数溝内であってセカンドシャフト上で、１８０度離れた位置にあることを特徴とする電動工具。 A housing containing a motor;
A gear case connected to one end of the housing;
A second shaft rotatably attached to the housing and driven to rotate by the motor;
A plunger attached to the gear case so as to reciprocate;
An electric power tool having a motion converting means for converting the rotational motion of the second shaft into the reciprocating motion of the plunger;
A plurality of semicircular grooves are provided on the outer periphery of the second shaft , and a spherical rigid body is rotatable in the plurality of grooves .
The counterweight is driven in the opposite phase to the reciprocating motion of the plunger as the motion trajectory ,
The electric power tool characterized in that the spherical rigid body is in a position 180 degrees apart on the second shaft in the plurality of grooves . 該カウンタウエイトから該球形剛体の抜け出し防止として該カウンタウエイトの一部を覆い、かつ該カウンタウエイトと共に運動するカウンタサブウエイトを備えたことを特徴とする請求項１に記載の電動工具。2. The electric tool according to claim 1, further comprising a counter subweight that covers a part of the counterweight and moves together with the counterweight to prevent the spherical rigid body from coming out of the counterweight.
JP2005285742A 2005-09-30 2005-09-30 Portable cutting machine Expired - Fee Related JP4529858B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2005285742A JP4529858B2 (en) 2005-09-30 2005-09-30 Portable cutting machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005285742A JP4529858B2 (en) 2005-09-30 2005-09-30 Portable cutting machine

Publications (3)

Publication Number Publication Date
JP2007090503A JP2007090503A (en) 2007-04-12
JP2007090503A5 true JP2007090503A5 (en) 2008-04-10
JP4529858B2 JP4529858B2 (en) 2010-08-25

Family

ID=37976763

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2005285742A Expired - Fee Related JP4529858B2 (en) 2005-09-30 2005-09-30 Portable cutting machine

Country Status (1)

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JP (1) JP4529858B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017144540A (en) * 2016-02-19 2017-08-24 株式会社マキタ Working tool

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5025562A (en) * 1990-03-01 1991-06-25 Milwaukee Electric Tool Corporation Counterbalanced reciprocating mechanism
JP2001009632A (en) * 1999-06-22 2001-01-16 Makita Corp Power tool using reciprocating mechanism
JP3897653B2 (en) * 2002-07-12 2007-03-28 株式会社マキタ Reciprocating power tool
JP4195818B2 (en) * 2003-01-16 2008-12-17 株式会社マキタ Electric hammer

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