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1.发明申请公开(公告)号：US20180099394A1
公开(公告)日：2018-04-12
申请号：US15724766
申请日：2017-10-04
申请人： MAKITA CORPORATION
CPC分类号： B25D16/006 , B25D17/043 , B25D17/24 , B25D2211/068 , B25D2216/0015 , B25D2216/0023 , B25D2216/0038 , B25D2216/0084 , B25D2222/72 , B25D2250/121 , B25D2250/201 , B25D2250/221 , B25D2250/265
摘要： An electric power tool according to one aspect of the present disclosure includes a main body, a motor, a tool holder configured to hold a tool bit, a hammer, a motion converter, a rotation transmitter, a first load detector, a second load detector, and a motor controller. The first load detector detects, based on information indicating a drive state of the motor, a load imposed from a work piece to the tool bit. The second load detector detects, based on information indicating a behavior of the main body, a load imposed from the work piece to the tool bit. The motor controller sets an upper limit of rotational speed of the motor to a predetermined no-load rotational speed in response to no-load on the tool bit being detected by both the first load detector and the second load detector.
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公开(公告)号：US20190194959A1
公开(公告)日：2019-06-27
申请号：US16222632
申请日：2018-12-17
申请人： MAKITA CORPORATION
发明人： Kunihisa SHIMA , Yuki KAWAI
IPC分类号： E04G21/12
CPC分类号： E04G21/123
摘要： A tying machine may include a feeding mechanism configured to feed a tying string, a battery, and a voltage detection circuit configured to detect a voltage of the battery. The feeding mechanism may include a feeding motor to which power is supplied from the battery. The tying machine may be configured to set a duty ratio for driving the feeding motor when feeding the tying string, in accordance with the voltage of the battery detected by the voltage detection circuit.
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公开(公告)号：US20190193879A1
公开(公告)日：2019-06-27
申请号：US16222076
申请日：2018-12-17
申请人： MAKITA CORPORATION
发明人： Hirokatsu YAMAMOTO , Kunihisa SHIMA
CPC分类号： B65B13/22 , B65B13/187 , B65B13/285
摘要： A tying machine may include a twisting mechanism configured to twist a tying string. The twisting mechanism may include a twisting motor. The tying machine may be configured to obtain torque acting on the twisting motor as a twisting torque value, and stop the twisting motor when a predetermined tying completion condition is satisfied. The tying completion condition may include that an elapsed time since a rise in the twisting torque value was detected reaches a first predetermined time.
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公开(公告)号：US20180099391A1
公开(公告)日：2018-04-12
申请号：US15723587
申请日：2017-10-03
申请人： MAKITA CORPORATION
发明人： Ryo UMEMOTO , Hirokatsu YAMAMOTO , Kunihisa SHIMA
CPC分类号： B25D11/005 , B25D16/00 , B25D2216/0023 , B25D2216/0084 , B25D2217/0057 , B25D2222/72 , B25D2250/095 , B25D2250/221 , B25D2250/265 , B25F5/00
摘要： An electric power tool of one aspect of the present disclosure includes a housing, a motor, an output shaft, a first power transmission, a second power transmission, a common sensor, a twisted-motion detector, and a vibration-based load detector. The common sensor detects a motion of the housing and outputs a detection signal indicating the detected motion. The twisted-motion detector detects a twisted-motion of the housing in a circumferential direction of the output shaft based on the detection signal. The vibration-based load detector detects a vibration of the housing in an axial direction of the output shaft based on the detection signal and detects a load on the output shaft based on the detected vibration.
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公开(公告)号：US20180297179A1
公开(公告)日：2018-10-18
申请号：US15948003
申请日：2018-04-09
申请人： MAKITA CORPORATION
摘要： A rotary impact tool in one aspect of the present disclosure includes a motor, an impact mechanism, an impact detector, and a controller. The controller executes constant duty ratio control from when the motor is started until an impact is detected by the impact detector. The controller executes constant rotation speed control in response to detection of an impact by the impact detector.
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公开(公告)号：US20180202178A1
公开(公告)日：2018-07-19
申请号：US15742573
申请日：2016-03-11
申请人： MAKITA CORPORATION
发明人： Kunihisa SHIMA , Hirokatsu YAMAMOTO , Ryo UMEMOTO
摘要： A rebar tying device is configured to tie a plurality of rebars by a wire. The rebar tying device includes a feeder configured to feed the wire wound around a reel by a rotation of a feeding motor; a guide configured to guide the wire fed by the feeder to around the plurality of rebars; a cutter configured to cut the wire fed by the feeder at a predetermined position; a twister configured to twist the wire around the plurality of rebars; a battery configured to supply power to the feeding motor; and a control unit. The control unit configured to control a feeding length of the wire by controlling an energizing time of the feeding motor based on a predetermined feeding length of the wire.
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公开(公告)号：US20230023514A1
公开(公告)日：2023-01-26
申请号：US17856340
申请日：2022-07-01
申请人： MAKITA CORPORATION
发明人： Kunihisa SHIMA , Hitoshi SUZUKI , Ryo UMEMOTO
摘要： A cart may include: a driving wheel; a motor configured to rotate the driving wheel; a motor drive circuit configured to drive the motor; a motor brake circuit configured to electrically brake the motor; a rotation speed sensor configured to detect a rotation speed of the motor; and a control device configured to control the motor via the motor drive circuit and the motor brake circuit based on a target rotation speed of the motor and the rotation speed detected by the rotation speed sensor. The motor brake circuit may include an electronically variable resistance element configured to operate in a linear mode and a switching mode in response to a control input signal. The motor brake circuit may be configured to operate. the electronically variable resistance element in the linear mode when braking the motor.
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公开(公告)号：US20190257097A1
公开(公告)日：2019-08-22
申请号：US16267868
申请日：2019-02-05
申请人： MAKITA CORPORATION
发明人： Yuki KAWAI , Kunihisa SHIMA
摘要： An electric power tool disclosed herein may include an actuator; a control unit; and a main switch. When the main power is on, the control unit may be capable of executing at least one sequence operation in which the actuator is operated according to a predetermined sequence. When the operation to switch the main power from on to off is performed on the main switch during execution of the at least one sequence operation: the main power may be kept on and electric power supply to the actuator may be continued until the at least one sequence operation under execution is completed; and the electric power supply to the actuator may be cut off and the main power may be switched from on to off after the at least one sequence operation under execution has been completed.
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