JP2009072889A - インパクト工具 - Google Patents
インパクト工具 Download PDFInfo
- Publication number
- JP2009072889A JP2009072889A JP2007246258A JP2007246258A JP2009072889A JP 2009072889 A JP2009072889 A JP 2009072889A JP 2007246258 A JP2007246258 A JP 2007246258A JP 2007246258 A JP2007246258 A JP 2007246258A JP 2009072889 A JP2009072889 A JP 2009072889A
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- Prior art keywords
- motor
- hammer
- current
- impact
- rotational
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- 230000007246 mechanism Effects 0.000 claims abstract description 29
- 238000001514 detection method Methods 0.000 claims abstract description 23
- 230000003247 decreasing effect Effects 0.000 abstract description 2
- 238000004804 winding Methods 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 230000002093 peripheral effect Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
Images
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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
- B25B23/147—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for electrically operated wrenches or screwdrivers
- B25B23/1475—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for electrically operated wrenches or screwdrivers for impact wrenches or screwdrivers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
インパクト工具を提供する。
【解決手段】 電流検出回路により検出したモータ電流が所定値Ith以上の場合は、インバータ回路と判断した時に、インバータ部を構成するFETのPWMデューティを100%から所定値、例えば85%に低下させモータ電流を低減する。その後、PWMデューティーを漸増しモータ電流を増加させPWMデューティを100%に戻す。
【選択図】図5
Description
1 ブラシレス直流モータ
2 インバーター部
3 制御回路部
31 演算部
32 電流検出回路
33 印加電圧設定回路
34 回転方向設定回路
35 回転位置検出回路
36 回転数検出回路
37 制御信号出力回路
4 電池パックケース
5a,5b、5c 回転位置検出素子(ホールIC)
6 胴体ハウジング部
7 ハンドルハウジング部
8 先端工具保持部
9 動力伝達機構部(減速機構部)
10 回転インパクト機構部
11 スピンドル
12 ハンマ
13 アンビル
14 スプリング
15 トリガースイッチ
16 正逆切替レバー
17 ボール(鋼球)
Claims (1)
- 電動モータと、
前記電動モータによって回転されるスピンドルと、
前記スピンドルの軸方向に作用して先端工具を打撃する打撃力を発生し、前記スピンドルの回転力と打撃力を先端工具に伝達する回転インパクト機構部と、
前記電動モータに流れる電流値を検出する電流検出手段と、
前記電動モータに流れる電流値を制御する電流制御手段と、を有し、
前記電流検出手段が所定値を超える電流値を検出したときに、前記電流制御手段が前記電動モータに流れる電流値を下げるようにすることを特徴とするインパクト工具。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007246258A JP5527569B2 (ja) | 2007-09-21 | 2007-09-21 | インパクト工具 |
CN2008800080140A CN101641186B (zh) | 2007-09-21 | 2008-09-19 | 冲击工具 |
EP08832319.1A EP2190628B1 (en) | 2007-09-21 | 2008-09-19 | Impact tool |
PCT/JP2008/067578 WO2009038230A1 (en) | 2007-09-21 | 2008-09-19 | Impact tool |
US12/530,621 US8074731B2 (en) | 2007-09-21 | 2008-09-19 | Impact tool |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007246258A JP5527569B2 (ja) | 2007-09-21 | 2007-09-21 | インパクト工具 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2009072889A true JP2009072889A (ja) | 2009-04-09 |
JP5527569B2 JP5527569B2 (ja) | 2014-06-18 |
Family
ID=40608403
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2007246258A Active JP5527569B2 (ja) | 2007-09-21 | 2007-09-21 | インパクト工具 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP5527569B2 (ja) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011189412A (ja) * | 2010-03-11 | 2011-09-29 | Hitachi Koki Co Ltd | インパクト工具 |
JP2011212799A (ja) * | 2010-03-31 | 2011-10-27 | Hitachi Koki Co Ltd | 電動工具 |
JP2011212795A (ja) * | 2010-03-31 | 2011-10-27 | Hitachi Koki Co Ltd | 電動工具 |
CN102470518A (zh) * | 2009-07-29 | 2012-05-23 | 日立工机株式会社 | 冲击工具 |
DE202013105393U1 (de) | 2012-11-28 | 2014-02-26 | Hitachi Koki Co., Ltd. | Elektrowerkzeug |
DE102013109016A1 (de) | 2012-09-26 | 2014-03-27 | Hitachi Koki Co., Ltd. | Bürstenloser motor und elektrisch angetriebenes werkzeug |
WO2014162862A1 (ja) * | 2013-03-30 | 2014-10-09 | 日立工機株式会社 | 電動工具 |
US9314908B2 (en) | 2009-07-29 | 2016-04-19 | Hitachi Koki Co., Ltd. | Impact tool |
WO2017122592A1 (ja) * | 2016-01-14 | 2017-07-20 | 日立工機株式会社 | 回転打撃工具 |
US9950417B2 (en) | 2010-03-31 | 2018-04-24 | Hitachi Koki Co., Ltd. | Power tool |
DE112021003035T5 (de) | 2020-05-29 | 2023-03-16 | Koki Holdings Co., Ltd. | Festziehwerkzeug |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4412158A (en) * | 1980-02-21 | 1983-10-25 | Black & Decker Inc. | Speed control circuit for an electric power tool |
JP2000246659A (ja) * | 1999-02-23 | 2000-09-12 | Matsushita Electric Works Ltd | インパクト回転工具 |
JP2004015986A (ja) * | 2002-06-11 | 2004-01-15 | Nidec Shibaura Corp | モータの制御装置 |
-
2007
- 2007-09-21 JP JP2007246258A patent/JP5527569B2/ja active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4412158A (en) * | 1980-02-21 | 1983-10-25 | Black & Decker Inc. | Speed control circuit for an electric power tool |
JP2000246659A (ja) * | 1999-02-23 | 2000-09-12 | Matsushita Electric Works Ltd | インパクト回転工具 |
JP2004015986A (ja) * | 2002-06-11 | 2004-01-15 | Nidec Shibaura Corp | モータの制御装置 |
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102470518A (zh) * | 2009-07-29 | 2012-05-23 | 日立工机株式会社 | 冲击工具 |
US9314908B2 (en) | 2009-07-29 | 2016-04-19 | Hitachi Koki Co., Ltd. | Impact tool |
JP2011189412A (ja) * | 2010-03-11 | 2011-09-29 | Hitachi Koki Co Ltd | インパクト工具 |
US9950417B2 (en) | 2010-03-31 | 2018-04-24 | Hitachi Koki Co., Ltd. | Power tool |
JP2011212799A (ja) * | 2010-03-31 | 2011-10-27 | Hitachi Koki Co Ltd | 電動工具 |
JP2011212795A (ja) * | 2010-03-31 | 2011-10-27 | Hitachi Koki Co Ltd | 電動工具 |
US9397535B2 (en) | 2012-09-26 | 2016-07-19 | Hitachi Koki Co., Ltd. | Brushless motor and electric-powered tool |
DE102013109016A1 (de) | 2012-09-26 | 2014-03-27 | Hitachi Koki Co., Ltd. | Bürstenloser motor und elektrisch angetriebenes werkzeug |
DE202013105393U1 (de) | 2012-11-28 | 2014-02-26 | Hitachi Koki Co., Ltd. | Elektrowerkzeug |
JP6044707B2 (ja) * | 2013-03-30 | 2016-12-14 | 日立工機株式会社 | 電動工具 |
CN104981325A (zh) * | 2013-03-30 | 2015-10-14 | 日立工机株式会社 | 电动工具 |
WO2014162862A1 (ja) * | 2013-03-30 | 2014-10-09 | 日立工機株式会社 | 電動工具 |
US10183384B2 (en) | 2013-03-30 | 2019-01-22 | Koki Holdings Co., Ltd. | Power tool |
WO2017122592A1 (ja) * | 2016-01-14 | 2017-07-20 | 日立工機株式会社 | 回転打撃工具 |
JPWO2017122592A1 (ja) * | 2016-01-14 | 2018-11-08 | 工機ホールディングス株式会社 | 回転打撃工具 |
US10994393B2 (en) | 2016-01-14 | 2021-05-04 | Koki Holdings Co., Ltd. | Rotary impact tool |
DE112021003035T5 (de) | 2020-05-29 | 2023-03-16 | Koki Holdings Co., Ltd. | Festziehwerkzeug |
Also Published As
Publication number | Publication date |
---|---|
JP5527569B2 (ja) | 2014-06-18 |
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