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公开(公告)号：US20180133877A1
公开(公告)日：2018-05-17
申请号：US15577236
申请日：2016-05-13
发明人： Takashi UEDA
摘要： There is provided a driving machine capable of reducing a load applied to a guide member in a direction of a center axis. The driving machine drives a fastener into a workpiece. The driving machine includes a movable piston, a driver blade operating together with the piston and applying driving force to the fastener, a cylinder guiding operation of the piston, a holder provided in a housing and supporting the cylinder, and a vibration damping rubber interposed between the holder and the housing and receiving a load applied to the holder in an operational direction of the piston.
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公开(公告)号：US20170144278A1
公开(公告)日：2017-05-25
申请号：US15321017
申请日：2015-06-19
IPC分类号： B25B21/02
CPC分类号： B25B21/026 , B25B21/02
摘要： In order to increase the screw tightening speed and improve the work efficiency, three first pawls 30e of a hammer 30 and three second pawls 18d of an anvil 18 are provided, so that a striking interval can be set to “interval of 120 degrees”, which is shorter than that of the related art. By setting total inertia obtained by sum of inertia of a rotor 12b and inertia of a spindle 26 to a low value which is “300 kg·mm2” or less when converted in terms of a rotation axis of the spindle 26, the rotor 12b and the spindle 26 can be sufficiently accelerated and the work efficiency can be improved.
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公开(公告)号：US11059156B2
公开(公告)日：2021-07-13
申请号：US15546967
申请日：2016-01-08
发明人： Satoshi Abe , Takahiro Ookubo , Hideyuki Hashimoto
摘要： An impact tool that realizes an ON-lock function with a simple mechanism and makes it possible to switch between activation and deactivation of the ON-lock function with few operation processes is provided. A hammer drill having at least two operating modes including a hammer mode in which an impact force is transmitted to a tool bit whereas a rotational force is not transmitted thereto includes: a motor as a power source; a trigger lever and an ON-lock button that are operated by an operator; a sensor that detects whether a selected operating mode is the hammer mode or not; and a controller that controls the motor based on an operation of the trigger lever and the ON-lock button. When the ON-lock button is operated while the hammer mode is selected, the controller performs ON-lock control to maintain the motor in the operating state even when the trigger lever is not operated.
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公开(公告)号：US10903775B2
公开(公告)日：2021-01-26
申请号：US14439083
申请日：2013-10-23
发明人： Nobuhito Hosokawa , Naoki Tadokoro
摘要： It is an object of the invention to provide a power tool capable of performing a control process for avoiding an operation of a protection function for protecting a motor against an overload, unlike the conventional power tool. The control unit detects current I flowing in the motor and determines whether current I exceeds I1 or not (S2). When current I exceeds I1 (S2: Yes), the control unit starts a duty ratio adjustment mode. When current I exceeds Imax (S4: Yes), the control unit accords a protection priority over the adjustment of the duty ratio and stops supplying power to the motor (S5). If current I does not exceed Imax (S4: No), the duty ratio is decreased (S7). When current I becomes lower than I2 (S8: Yes), the control unit increases the duty ratio (S10).
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公开(公告)号：USD844558S1
公开(公告)日：2019-04-02
申请号：US29629778
申请日：2017-12-15
设计人： Takeshi Taniguchi , Shuji Takeda , Shota Kanno
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公开(公告)号：US20180345433A1
公开(公告)日：2018-12-06
申请号：US15779546
申请日：2016-10-28
发明人： Tomoaki SUDO , Yoshikazu KAWANO
CPC分类号： B25F5/00
摘要： An electrically powered tool (1) includes a motor (10), a battery pack (5) supplying electric power to the motor (10), a battery voltage detection circuit (17) detecting battery voltage, a current detection circuit (15) detecting current flowing through the motor (10), and a microcomputer (20) controlling driving of the motor (10). The microcomputer (20) discriminates a load state of the motor (10) according to whether or not the current flowing through the motor (10) is equal to or greater than a threshold value, and the microcomputer (20) can change the threshold value in accordance with the battery voltage. When the current flowing through the motor (10) remains below the threshold value for a predetermined period of time, the microcomputer (20) stops the supply of electric power to the motor (10).
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公开(公告)号：US10086529B2
公开(公告)日：2018-10-02
申请号：US14575842
申请日：2014-12-18
发明人： Takeru Kumakura , Akira Onose
摘要： A power planer includes a casing, a motor having rotation shaft, a power supply portion for supplying electric power to the motor, a control portion, a cutter block, and a fan. The casing has intake and discharge openings and provides an air passage from the intake opening to the discharge opening. The control portion is connected to the electric motor and to the power supply portion. The cutter block has an axis parallel to the rotation shaft, and is supported to the casing and rotatable about the axis. A blade is provided in the cutter block. The fan is provided in the casing and configured to generate air stream within the casing and flowing along the air passage in a flowing direction. The air passage includes a control portion cooling passage for cooling the latter. The fan is positioned downstream of the control portion in the flowing direction.
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公开(公告)号：US10035253B2
公开(公告)日：2018-07-31
申请号：US14759298
申请日：2014-01-08
发明人： Hiroto Inagawa , Kenji Fukuda
CPC分类号： B25F5/02 , B25D17/043 , B25D17/24 , B25F5/006 , Y10T16/476
摘要： A portable work tool includes: a housing; a motor; and a restraining surface. The housing has an outer surface including a covered region that is covered with a soft layer and an uncovered region that is exposed to an outside. The covered region and the uncovered region define a boundary therebetween. The motor is accommodated in the housing. The restraining surface is disposed in proximity to the boundary and protrudes from the covered region.
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公开(公告)号：US20180199506A1
公开(公告)日：2018-07-19
申请号：US15743668
申请日：2016-08-26
发明人： Tatsuya ITO , Yoshio IIMURA
CPC分类号： A01D34/008 , A01B69/00 , A01D34/64 , A01D34/78 , A01D34/81 , A01D2101/00 , G05D1/021 , G05D1/0265 , G05D2201/0201 , G05D2201/0208
摘要： “A self-propelled grass mower and a self-propelled wheeled apparatus that can perform precise guidance control by reliably detecting a guidance signal with a guidewire are provided. The self-propelled grass mower includes wheel motors for driving wheels, a cutting blade motor for driving a cutting blade, a rechargeable battery for supplying electrical power to these motors, and a guidewire sensor for detecting a magnetic field generated by a guidewire formed into a loop. In the self-propelled grass mower that detects whether is inside or outside of a region enclosed by the guidewire and runs autonomously in a grass cutting region, only the supply voltage for the cutting blade motor is reduced when a magnetic field is detected by the guidewire sensor. Driving of the cutting blade motor is restarted after detection of the magnetic field has completed. Thereby, the impact of noise due to the cutting blade motor is eliminated.”
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公开(公告)号：US09981274B2
公开(公告)日：2018-05-29
申请号：US14111463
申请日：2012-04-13
申请人： Masahiro Inaniwa , Hiroyuki Takahashi , Kouichi Akatsu , Hisanobu Ooyama , Yuki Hodotsuka , Hidetaka Osawa
发明人： Masahiro Inaniwa , Hiroyuki Takahashi , Kouichi Akatsu , Hisanobu Ooyama , Yuki Hodotsuka , Hidetaka Osawa
摘要： A centrifuge including: a rotor configured to hold a sample and configured to be detachably mounted, a rotation chamber accommodating the rotor, a plurality of motors configured to be rotationally driven by three-phase AC power, and a control device configured to control centrifuging operation, wherein one of the plurality of motors is a centrifuge motor configured to rotate the rotor, and the control device is configured to change distribution of power supplied to the centrifuge motor and power supplied to another motor of the plurality of motors during one operation.
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