EP2674260A1 - Elektrowerkzeug - Google Patents

Elektrowerkzeug Download PDF

Info

Publication number
EP2674260A1
EP2674260A1 EP12744315.8A EP12744315A EP2674260A1 EP 2674260 A1 EP2674260 A1 EP 2674260A1 EP 12744315 A EP12744315 A EP 12744315A EP 2674260 A1 EP2674260 A1 EP 2674260A1
Authority
EP
European Patent Office
Prior art keywords
motor
reduction ratio
detecting means
temperature
motor driving
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
EP12744315.8A
Other languages
English (en)
French (fr)
Other versions
EP2674260B1 (de
EP2674260A4 (de
Inventor
Tadashi Arimura
Kenichiro Inagaki
Masatoshi Atsumi
Yutaka Yamada
Hiroyuki Kaizo
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.)
Panasonic Intellectual Property Management Co Ltd
Original Assignee
Panasonic Corp
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 Panasonic Corp filed Critical Panasonic Corp
Publication of EP2674260A1 publication Critical patent/EP2674260A1/de
Publication of EP2674260A4 publication Critical patent/EP2674260A4/de
Application granted granted Critical
Publication of EP2674260B1 publication Critical patent/EP2674260B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
    • 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
    • B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
    • B25B21/008—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose with automatic change-over from high speed-low torque mode to low speed-high torque mode
    • 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

Definitions

  • the present invention relates to electric tools, particularly to an electric tool including a gear shifting means.
  • the operation state is determined based on only the motor current. Therefore, these electric tools can malfunction due to a rush motor current (see Fig. 8(a) ) at the start of the motor.
  • a method is also proposed in which the motor current is not used for the determination for a predetermined time after the start of the motor. In this method, however, in the case where a load for causing motor lock is charged from the start of the motor, excessive current flows through the motor for the predetermined time and the motor can be damaged.
  • the present invention addresses such a problem, and provides an electric tool capable of inexpensively and appropriately switching the reduction ratio in response to increase in load.
  • An electric tool of the present invention includes a transmission for switching a reduction ratio between a motor as a rotational power source and an output unit rotatably driven by the motor.
  • the electric tool includes the following elements:
  • the controlling means may employ a driving state that differs between an operation of switching the reduction ratio from the low reduction ratio side to the high reduction ratio side and an operation of switching the reduction ratio from the high reduction ratio side to the low reduction ratio side.
  • a motor driving current value, and the number of rotations of the motor or an increase rate of the number of rotations of the motor can be appropriately employed.
  • the electric tool where malfunction is neither caused by a rush current at the start of the motor nor by a rush current by rapid variation of the number of rotations of the motor can be obtained with a simple configuration.
  • the controlling means preferably, switches the reduction ratio from the low reduction ratio side to the high reduction ratio side when the motor driving current value and the increase rate of the number of rotations of the motor satisfy the respective predetermined conditions.
  • the controlling means preferably, switches the reduction ratio from the high reduction ratio side to the low reduction ratio side when the motor driving current value and the number of rotations of the motor satisfy the respective predetermined conditions.
  • the electric tool includes a motor driving temperature detecting means detecting the temperature of the motor or the temperature of a motor driving circuit for the motor, wherein the controlling means corrects the predetermined conditions for switching of the reduction ratio in response to a motor driving temperature detected by the motor driving temperature detecting means.
  • the electric tool includes a power supply temperature detecting means detecting the temperature of the power supply, wherein the controlling means corrects the predetermined conditions for switching of the reduction ratio in response to the power supply temperature detected by the power supply temperature detecting means.
  • the controlling means increases the predetermined condition for the motor driving current value when the motor driving temperature detected by the motor driving temperature detecting means is higher than a predetermined value. It is possible to prevent reduction in torque during gear shift and to prevent reduction in working speed.
  • the controlling means decreases the predetermined condition for the motor driving current value when the power supply temperature detected by the power supply temperature detecting means is higher than a predetermined value. It is possible to reduce the load on the battery, and restrict the temperature increase. It is possible to prevent battery degradation and secure the safety of the work.
  • the electric tool further includes a motor driving temperature detecting means detecting the temperature of the motor or the temperature of a motor driving circuit for the motor, and a power supply temperature detecting means detecting the temperature of the power supply.
  • the controlling means may correct the predetermined conditions in response to the motor driving temperature detected by the motor driving temperature detecting means and the power supply temperature detected by the power supply temperature detecting means.
  • the correction of the predetermined condition based on the power supply temperature has higher priority than the correction of the predetermined condition based on the motor driving temperature, the increase in battery temperature does not immediately cause motor forced stop. Therefore, the safety of the work is secured advantageously.
  • the electric tool may employ the smaller one of the following correction values:
  • the possibility of causing automatic gear shift with an undesired timing or an inappropriate timing can be reduced comparing with the case where automatic gear shift is performed solely by satisfying a single condition. Therefore, comfortable work can be performed.
  • An electric tool of Fig. 2 is an electric drill driver where a normally/inversely rotational motor 10 is used as the power source.
  • the rotation output of the motor 10 is sent to an output unit 12 via a transmission 11 that has a gear shift function of switching the reduction ratio.
  • the reference number 18 denotes a battery pack.
  • the transmission 11 can switch the reduction ratio with an electromagnetic member such as a solenoid, and the operation of switching the reduction ratio is performed under control by a control circuit 13.
  • the control circuit 13 also controls the rotation of the motor 10 in response to an operation of a trigger switch 14.
  • the control circuit 13 that drives the motor 10 via a motor driving circuit 15 is connected to a number-of-rotations detecting means 16 detecting the number N of rotations of the motor 10, and is connected to a current detecting means 17 detecting a motor driving current I.
  • the control circuit 13 commands the transmission 11 to switch the reduction ratio in response to a detection output of a driving state detecting means formed of both the detecting means 16 and 17.
  • the control circuit 13 formed of a one-chip microcomputer in the electric tool starts the motor 10 in a state where the reduction ratio is set on the low side (reduction ratio 1 in Fig. 1 ) as the initial setting.
  • the motor driving current I ⁇ I1 (A) and the increase rate of the number of rotations of the motor ⁇ ⁇ 1 are satisfied, automatic gear shift to the high reduction ratio side (reduction ratio 2 in Fig. 1 ) is performed.
  • the control circuit 13 automatically shifts the transmission 11 to the high reduction ratio side. Reduction of the number N of rotations of the motor indicates that the increase rate is a negative value.
  • the gear shift conditions include not only the motor driving current I but also the number N of rotations of the motor or the increase rate thereof. Therefore, the work can be performed at a reduction ratio appropriate for the working load, a false gear shift can be prevented, and a tool driving unit can be prevented from undergoing an excessive load.
  • the determination is performed based on the value of the increase rate of the number N of rotations of the motor.
  • the value of the number N of rotations may be used as a determination condition.
  • the value of the number N of rotations of the motor is used as a condition of the automatic gear shift to the low reduction ratio (high speed side).
  • the increase rate of the number of rotations per unit time is because the effect of a rush current can be easily avoided.
  • a motor driving temperature detecting means 19 which detects the temperature of the motor 10 or the temperature of the motor driving circuit 15.
  • the controlling circuit 13 corrects the condition value for switching of the reduction ratio in response to the motor driving temperature Tm detected by the motor driving temperature detecting means 19, thereby preventing reduction of the torque during gear shift and preventing reduction of the working speed.
  • a controlling means that can switch the reduction ratio between three stages and uses the I1, I2, I3, and I4 as the condition values for the motor current for gear shift is taken as an example.
  • the motor driving temperature Tm is lower than a preset temperature Tm1
  • current values I11, I21, I31, and I41 are used as the current values I1, I2, I3, and I4 for determination.
  • current values I12, I22, I32, and I42 are used.
  • Fig. 5 shows a flowchart in this case.
  • the correction is performed by setting a table, but the determination current value may be varied in response to the motor driving temperature based on a function expression of the motor driving temperature and the determination current.
  • the motor driving temperature Tm is Tm3 or higher, the motor driving temperature Tm is determined as abnormal temperature, and the motor driving is forcibly stopped, thereby preventing damage of the tool.
  • a battery temperature detecting means (power supply detecting means) 20 detecting the temperature of the battery is provided as shown in Fig. 6 .
  • the controlling circuit 13 corrects the condition value for switching of the reduction ratio in response to the value of the battery temperature Tb detected by the battery temperature detecting means 20.
  • the load of the motor 10 is reduced and hence the increase in battery temperature Tb can be suppressed.
  • the determination current values I1 to I4 are not varied.
  • the determination current values I1 and I2 are corrected to small values, and gear shift to a high reduction ratio state is early performed.
  • the motor 10 is forcibly stopped.
  • the increase in battery temperature can be restricted while the work is continued. Furthermore, a phenomenon can be prevented where the battery temperature Tb increases, the motor 10 suddenly stops, and the work is disabled. Therefore, the work can be continued safely.
  • the correction based on the battery temperature Tb can be also performed by setting a table, and the determination current values may be varied in response to the battery temperature Tb based on a function expression of the battery temperature Tb and the determination current.
  • the condition values are corrected based on the table in response to both the motor driving temperature Tm and the battery temperature Tb.
  • the battery temperature Tb ⁇ Tb1 correction based on the battery temperature is not performed, and a correction value determined by the motor driving temperature Tm is used.
  • the reduction ratio is switched using not the correction value determined by the motor driving temperature Tm but the correction value set in response to the battery temperature Tb.
  • the motor current value is reduced.
  • the increase in battery temperature can be restricted.
  • the motor 10 is forcibly stopped when the battery temperature Tb is Tb2 or higher and the battery generates heat. The increase in battery temperature does not immediately cause forced stop of the motor 10, so that the work can be safely continued.
  • the motor current I and the number N of rotations of the motor are used as the driving states that are to be detected for automatic switching of the reduction ratio.
  • the motor current I and motor driving temperature Tm, the motor current I and battery temperature Tb, the motor driving temperature Tm and the number N of rotations of the motor, or the number N of rotations and battery temperature Tb may be used.
  • the reduction ratio may be switched when three or more of the above-mentioned parameters satisfy the respective preset conditions.
  • the operation amount (trigger amount) of the trigger switch 14 may be one of the driving states that are to be detected for automatic switching of the reduction ratio.
  • the electric tool includes the motor 10, output unit 12, and transmission 11.
  • the motor 10 defines a rotational power source.
  • the output unit 12 is rotatably driven by the motor 10.
  • the transmission 11 is disposed between the motor 10 and output unit 12. The transmission 11 is configured to switch the reduction ratio.
  • the driving state of the motor 10 varies in response to the magnitude of the load charged on the motor 10.
  • the electric tool includes a driving state detecting means and a controlling means (control circuit 13).
  • the driving state detecting means is configured to detect at least two driving states.
  • the two driving states vary in response to the magnitude of the load when the output unit 12 is driven.
  • the controlling means makes the transmission 11 switch the reduction ratio when the at least two driving states detected by the driving state detecting means satisfy predetermined conditions preset for the respective driving states.
  • the electric tool includes the driving state detecting means and the controlling means.
  • the driving state detecting means is configured to detect the driving state of the motor 10.
  • the driving state detecting means is configured to detect the at least two driving states. One of the at least two driving states is the first driving state, and the other is the second driving state.
  • the driving state detecting means is configured to detect the first driving state and the second driving state.
  • the first driving state is one of the driving states varying in response to the magnitude of the load when the output unit 12 is driven.
  • the second driving state is a driving state varying in response to the magnitude of the load when the output unit 12 is driven.
  • the second driving state is different from the first driving state.
  • the controlling means is configured to recognize whether the first driving state satisfies the first condition.
  • the controlling means is configured to recognize whether the second driving state satisfies the second condition.
  • the controlling means is configured to make the transmission 11 switch the reduction ratio when the first driving state satisfies the first condition and the second driving state satis
  • the controlling means uses, as a driving state to be compared with each predetermined condition, a driving state that differs between the operation of switching the reduction ratio from the low reduction ratio side to the high reduction ratio side and the operation of switching the reduction ratio from the high reduction ratio side to the low reduction ratio side.
  • the at least two driving states detected by the driving state detecting means indicate the motor driving current value, and the number of rotations of the motor 10 or the increase rate of the number of rotations of the motor 10.
  • the first driving state indicates the motor driving current value.
  • the second driving state indicates the number of rotations of the motor 10 or the increase rate of the number of rotations of the motor 10.
  • the controlling means includes a number-of-rotations detecting means 16.
  • the number-of-rotations detecting means 16 is configured to detect the number of rotations of the motor 10.
  • the controlling means is configured to recognize the number of rotations of the motor 10 based on the number of rotations of the motor 10 detected by the number-of-rotations detecting means 16.
  • the controlling means may recognize the change rate of the number of rotations of the motor 10.
  • the controlling means includes the number-of-rotations detecting means 16.
  • the number-of-rotations detecting means 16 is configured to detect the number of rotations of the motor 10.
  • the controlling means is configured to recognize the increase rate of the number of rotations of the motor 10 based on the variation of the number of rotations of the motor 10 detected by the number-of-rotations detecting means 16.
  • the electric tool includes a current detecting means 17.
  • the current detecting means 17 is configured to detect a motor driving current for driving the motor 10.
  • the controlling means is configured to detect a motor driving current value based on the motor driving current detected by the current detecting means 17.
  • the controlling means makes the transmission 11 switch the reduction ratio from the low reduction ratio side to the high reduction ratio side when the motor driving current value and the increase rate of the number of rotations of the motor 10 satisfy respective predetermined conditions.
  • the controlling means makes the transmission 11 switch the reduction ratio from a reduction ratio lower than a predetermined reduction ratio to a reduction ratio higher than the predetermined reduction ratio.
  • the controlling means is configured to make the transmission 11 switch the reduction ratio from the low reduction ratio side to the high reduction ratio side.
  • the controlling means is configured to make the transmission 11 switch the reduction ratio from the reduction ratio lower than the predetermined reduction ratio to the reduction ratio higher than the predetermined reduction ratio.
  • controlling means is configured to make the transmission 11 switch the reduction ratio from the reduction ratio lower than the predetermined reduction ratio to the reduction ratio higher than the predetermined reduction ratio in the following condition:
  • the first determination current value is a current value I1, for example.
  • the first predetermined increase rate of the number of rotations is an increase rate ⁇ 1, for example.
  • the controlling means operates the transmission 11 at a low reduction ratio when the motor 10 is started.
  • the controlling means operates the transmission 11 at a reduction ratio lower than the predetermined reduction ratio when the motor 10 is started.
  • the controlling means makes the transmission 11 switch the reduction ratio from a high reduction ratio side to a low reduction ratio side when the motor driving current value and the number of rotations of the motor 10 satisfy respective predetermined conditions.
  • the controlling means makes the transmission 11 switch the reduction ratio from a reduction ratio higher than a predetermined reduction ratio to a reduction ratio lower than the predetermined reduction ratio.
  • the controlling means is configured to make the transmission 11 switch the reduction ratio from the high reduction ratio side to the low reduction ratio side.
  • the controlling means is configured to make the transmission 11 switch the reduction ratio from the reduction ratio higher than the predetermined reduction ratio to the reduction ratio lower than the predetermined reduction ratio.
  • controlling means is configured to make the transmission 11 switch the reduction ratio from the reduction ratio higher than the predetermined reduction ratio to the reduction ratio lower than the predetermined reduction ratio in the following condition:
  • the first determination current value may be different from the second determination current value.
  • the controlling means may be configured to make the transmission 11 switch the reduction ratio from a high reduction ratio side to a low reduction ratio side.
  • the first predetermined increase rate of the number of rotations may be different from the second predetermined increase rate of the number of rotations.
  • the controlling means is configured to make the transmission 11 switch the reduction ratio from a reduction ratio higher than the predetermined reduction ratio to a reduction ratio lower than the predetermined reduction ratio.
  • the first predetermined increase rate of the number of rotations may be different from the second predetermined increase rate of the number of rotations.
  • the electric tool may include a motor driving temperature detecting means 19, as shown in Fig. 4 .
  • the motor driving temperature detecting means is configured to detect the motor driving temperature.
  • the motor driving temperature is the temperature of the motor or the temperature of the driving circuit of the motor.
  • the controlling means corrects the predetermined condition for switching of the reduction ratio in response to the motor driving temperature detected by the motor driving temperature detecting means.
  • One of the driving states detected by the driving state detecting means is the motor driving current value.
  • the controlling means increases the predetermined condition for the motor driving current value when the motor driving temperature detected by the motor driving temperature detecting means 19 is higher than a predetermined value.
  • the electric tool may include a power supply temperature detecting means, as shown in Fig. 6 .
  • the power supply temperature detecting means is configured to detect the temperature of the power supply.
  • the controlling means is configured to correct the predetermined condition for switching of the reduction ratio in response to the power supply temperature detected by the power supply temperature detecting means.
  • the electric tool includes the power supply temperature detecting means detecting the temperature of the power supply.
  • the controlling means is configured to make the transmission 11 switch the reduction ratio from a low reduction ratio side to a high reduction ratio side when three conditions (a), (b), and (c) are satisfied.
  • the condition (a) indicates that the power supply temperature detected by the power supply temperature detecting means is lower than a first condition temperature.
  • the condition (b) indicates that the driving current value of the motor 10 is a first determination current value or higher.
  • the condition (c) indicates that the increase rate of the number of rotations of the motor 10 is the first predetermined increase rate of the number of rotations or lower.
  • the controlling means is configured to make the transmission 11 switch the reduction ratio from the low reduction ratio side to the high reduction ratio side when three conditions (d), (e), and (f) are satisfied.
  • the condition (d) indicates that the power supply temperature detected by the power supply temperature detecting means is the first condition temperature or higher and is lower than a second condition temperature.
  • the condition (e) indicates that the motor driving current value is a first correction current value or higher. Here, the first correction current value is lower than the first determination current value.
  • the condition (f) indicates that the increase rate of the number of rotations of the motor 10 is the first predetermined increase rate of the number of rotations or lower.
  • the controlling means forcibly stops the motor 10 when the power supply temperature detected by the power supply temperature detecting means is a second condition temperature or higher.
  • One of the driving states detected by the driving state detecting means is the motor driving current value.
  • the controlling means decreases the predetermined condition for the motor driving current value when the power supply temperature detected by the power supply temperature detecting means is higher than a predetermined value.
  • the motor driving temperature detecting means 19 and the power supply temperature detecting means may be combined with each other.
  • the electric tool includes the motor driving temperature detecting means 19 and the power supply temperature detecting means.
  • the motor driving temperature detecting means 19 is configured to detect the temperature of the motor 10.
  • the motor driving temperature detecting means 19 is configured to detect the temperature of the motor driving circuit 15 for the motor 10.
  • the power supply temperature detecting means is configured to detect the temperature of the power supply.
  • the controlling means is configured to correct the predetermined conditions in response to the motor driving temperature detected by the motor driving temperature detecting means 19 and the power supply temperature detected by the power supply temperature detecting means.
  • the controlling means puts a higher priority on the correction of the predetermined condition based on the power supply temperature than on the correction of the predetermined condition based on the motor driving temperature.
  • the controlling means is configured to correct the predetermined conditions in response to the motor driving temperature detected by the motor driving temperature detecting means 19 and the power supply temperature detected by the power supply temperature detecting means.
  • the controlling means does not correct the predetermined condition based on the motor driving temperature, but corrects the predetermined condition based on the power supply temperature.
  • the controlling means may employ the smaller one of the following correction values:

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Portable Power Tools In General (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
EP12744315.8A 2011-02-07 2012-02-06 Elektrowerkzeug Active EP2674260B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011024117A JP5331136B2 (ja) 2011-02-07 2011-02-07 電動工具
PCT/JP2012/052595 WO2012108375A1 (ja) 2011-02-07 2012-02-06 電動工具

Publications (3)

Publication Number Publication Date
EP2674260A1 true EP2674260A1 (de) 2013-12-18
EP2674260A4 EP2674260A4 (de) 2018-04-11
EP2674260B1 EP2674260B1 (de) 2021-10-27

Family

ID=46638590

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12744315.8A Active EP2674260B1 (de) 2011-02-07 2012-02-06 Elektrowerkzeug

Country Status (4)

Country Link
EP (1) EP2674260B1 (de)
JP (1) JP5331136B2 (de)
CN (1) CN103459097B (de)
WO (1) WO2012108375A1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT202100010217A1 (it) * 2021-04-22 2022-10-22 Cembre Spa Avvitatore a coppia controllata
IT202100010208A1 (it) * 2021-04-22 2022-10-22 Cembre Spa Avvitatore a coppia controllata
IT202100010190A1 (it) * 2021-04-22 2022-10-22 Cembre Spa Avvitatore a coppia controllata

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014054708A (ja) * 2012-09-13 2014-03-27 Panasonic Corp 電動工具
JP6089318B2 (ja) * 2013-03-12 2017-03-08 パナソニックＩｐマネジメント株式会社 電動工具
CN105345713A (zh) * 2015-12-12 2016-02-24 国网山东夏津县供电公司 电表箱输入线路螺母固定器
DE112018003483B4 (de) * 2017-09-29 2021-06-24 Koki Holdings Co., Ltd. Elektrisches Werkzeug mit Steuereinheit
CN111823193B (zh) * 2019-04-19 2022-11-15 苏州宝时得电动工具有限公司 电动工具及其控制方法
JP7465190B2 (ja) * 2020-10-12 2024-04-10 パナソニックホールディングス株式会社 電動工具、モータ制御方法及びプログラム

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6246570U (de) * 1985-09-05 1987-03-20
JPH07124827A (ja) * 1993-10-29 1995-05-16 Matsushita Electric Ind Co Ltd ねじ締め装置
JP3391906B2 (ja) * 1994-08-26 2003-03-31 松下電工株式会社 遊星変速装置
JPH09183076A (ja) * 1995-12-28 1997-07-15 Shibaura Eng Works Co Ltd ボルト締結機
EP0808018B2 (de) * 1996-05-13 2011-06-08 Black & Decker Inc. Elektrowerkzeug mit einer Motorsteuerungsschaltung zur Verbesserung der Steuerung der Drehmomentsabgabe des Elektrowerkzeuges
JP3744146B2 (ja) * 1997-09-25 2006-02-08 松下電工株式会社 電池式電動工具
US6758783B1 (en) * 2003-03-22 2004-07-06 Power Network Industry Co., Ltd. Automatic speed shifting device
CN101377229B (zh) * 2007-08-29 2012-12-19 苏州宝时得电动工具有限公司 变速工具及其变速控制方法
EP2030709A3 (de) * 2007-08-29 2013-01-16 Positec Power Tools (Suzhou) Co., Ltd. Werkzeugmaschine
JP4609489B2 (ja) * 2007-12-25 2011-01-12 パナソニック電工株式会社 電動工具
CN101637901B (zh) * 2008-07-31 2011-12-07 苏州宝时得电动工具有限公司 变速工具
JP2010264578A (ja) * 2009-05-18 2010-11-25 Makita Corp 電動工具

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2012108375A1 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT202100010217A1 (it) * 2021-04-22 2022-10-22 Cembre Spa Avvitatore a coppia controllata
IT202100010208A1 (it) * 2021-04-22 2022-10-22 Cembre Spa Avvitatore a coppia controllata
IT202100010190A1 (it) * 2021-04-22 2022-10-22 Cembre Spa Avvitatore a coppia controllata

Also Published As

Publication number Publication date
EP2674260B1 (de) 2021-10-27
CN103459097B (zh) 2015-08-26
JP5331136B2 (ja) 2013-10-30
CN103459097A (zh) 2013-12-18
JP2012161882A (ja) 2012-08-30
WO2012108375A1 (ja) 2012-08-16
EP2674260A4 (de) 2018-04-11

Similar Documents

Publication Publication Date Title
EP2674260B1 (de) Elektrowerkzeug
JP5122750B2 (ja) 電動工具
EP2572831B1 (de) Elektrisches Werkzeug
US8468816B2 (en) Hybrid working machine
JP5914841B2 (ja) 電動工具
KR102008605B1 (ko) 전동식 오일펌프의 제어방법
CN103368480A (zh) 手持电动工具及其控制方法
CN110899837A (zh) 电动工具及其启动方法
US9808927B2 (en) Voltage control at low temperature to avoid undervoltage switch-offs in battery-powered, hand-operated electric tools
JP2002224972A (ja) 内部発熱温度検知機能を備えた電動回転工具
GB2436959A (en) Electric machine tool and method for operating the latter
JP2007051621A (ja) エンジン駆動式作業用機具
JP2018042452A (ja) 電動車両の充電制御装置及び充電制御方法
JP2017205834A (ja) 電動作業機
CN103368483A (zh) 手持电动工具及其控制方法
JP2003248519A (ja) 電気機器の温度に依存した電力制御のための方法および装置
JP2003158892A (ja) 電気モータの回転速度制御方法
US20240006959A1 (en) Low voltage protective features in power tools
EP4269032A1 (de) Elektrische arbeitsmaschine
JP2005137107A (ja) ハイブリッド車両の起動制御装置及び方法
KR20110028888A (ko) 하이브리드 오일펌프의 토출유량 증대 제어방법
JP2012034433A (ja) モータ駆動システム
TWI397253B (zh) Motor multi - stage current limiting control device and method thereof
TWI405382B (zh) Motor multi - stage temperature protection current limiting device and its method
JP2023055529A (ja) 電動工具

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20130711

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAX Request for extension of the european patent (deleted)
RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LT

RA4 Supplementary search report drawn up and despatched (corrected)

Effective date: 20180312

RIC1 Information provided on ipc code assigned before grant

Ipc: B25F 5/00 20060101AFI20180306BHEP

Ipc: B25B 23/14 20060101ALI20180306BHEP

REG Reference to a national code

Ref country code: DE

Ref legal event code: R079

Ref document number: 602012077015

Country of ref document: DE

Free format text: PREVIOUS MAIN CLASS: B25F0005000000

Ipc: B25B0021000000

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

RIC1 Information provided on ipc code assigned before grant

Ipc: B25B 23/147 20060101ALI20210414BHEP

Ipc: B25B 21/00 20060101AFI20210414BHEP

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20210520

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1441371

Country of ref document: AT

Kind code of ref document: T

Effective date: 20211115

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602012077015

Country of ref document: DE

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG9D

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20211027

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 1441371

Country of ref document: AT

Kind code of ref document: T

Effective date: 20211027

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211027

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211027

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211027

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220127

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211027

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220227

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211027

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220228

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211027

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220127

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211027

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211027

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211027

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220128

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211027

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602012077015

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211027

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211027

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211027

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211027

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211027

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211027

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211027

26N No opposition filed

Effective date: 20220728

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20220228

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20220206

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20220206

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211027

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211027

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20220228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20220228

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20220206

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20220206

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20220228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20220228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211027

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20120206

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211027

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20211027

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20240219

Year of fee payment: 13