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公开(公告)号：US20140312721A1
公开(公告)日：2014-10-23
申请号：US14321157
申请日：2014-07-01
Applicant: MAKITA CORPORATION
Inventor： Yutaka MATSUNAGA , Takeshi NISHIMIYA
Abstract: An electric power tool, which uses a DC brushless motor as a drive source and controls the DC brushless motor by a switching element, can include a tubular housing main body portion accommodating the DC brushless motor, and a grip portion protruding from a side portion of the housing main body portion. The switching element is arranged inside the grip portion, and is spaced apart from an electronic circuit board for an electronic component for operating the switching element.
Abstract translation: 使用DC无刷电动机作为驱动源并通过开关元件控制DC无刷电动机的电动工具可以包括容纳DC无刷电动机的管状壳体主体部分和从侧面部分突出的把手部分 壳体主体部分。 开关元件布置在把手部分内部，并且与用于操作开关元件的电子部件的电子电路板间隔开。
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公开(公告)号：US20230129772A1
公开(公告)日：2023-04-27
申请号：US18086811
申请日：2022-12-22
Applicant: MAKITA CORPORATION
Inventor： Takeshi NISHIMIYA , Hidekazu SUDA
Abstract: An electric working machine in one aspect of the present disclosure includes: a motor; a driver to drive the motor; a first control circuit; and a second control circuit. The first control circuit controls the driver such that the motor rotates in a set rotation direction. The second control circuit is provided separately from the first control circuit. The second control circuit detects a rotation direction of the motor and performs an abnormality handling process to stop rotation of the motor in response to a situation where the detected rotation direction is reverse to the set rotation direction.
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Patent Agency Ranking
公开(公告)号：US20170157752A1
公开(公告)日：2017-06-08
申请号：US15323176
申请日：2015-04-08
Applicant: MAKITA CORPORATION
Inventor： Takeshi NISHIMIYA , Kazunori TSUGE , Nobuyasu FURUI
CPC classification number: B25B21/008 , B25B21/00 , B25B23/1415 , B25B23/147 , B25F5/001 , B25F5/02
Abstract: An operation switch sends an ON signal to a control processor indicating the operation switch is triggered by a user. A magnetic sensor sends a sensor signal to the control processor based on a displacement of a chip rod in a rearward direction. In the case where the sensor signal has not yet been sent, the control processor performs a control in a first mode where a brushless DC motor is not driven. In the case where sensor signal is sent, control processor performs a control in a second mode wherein the brushless DC motor is driven. An output in the first mode is lower than in the second mode. Because of this manner of construction, even if an ON input is triggered and held by the user, electric power is conserved while the operation switch is switched on and a hexagonal nut is not fastened, improving power consumption efficiency.
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公开(公告)号：US20200067435A1
公开(公告)日：2020-02-27
申请号：US16462675
申请日：2017-11-22
Applicant: MAKITA CORPORATION
Inventor： Takeshi NISHIMIYA , Hidekazu SUDA
Abstract: An electric working machine in one aspect of the present disclosure includes: a motor; a driver to drive the motor; a first control circuit; and a second control circuit. The first control circuit controls the driver such that the motor rotates in a set rotation direction. The second control circuit is provided separately from the first control circuit. The second control circuit detects a rotation direction of the motor and performs an abnormality handling process to stop rotation of the motor in response to a situation where the detected rotation direction is reverse to the set rotation direction.
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5.发明申请公开(公告)号：US20180038546A1
公开(公告)日：2018-02-08
申请号：US15660372
申请日：2017-07-26
Applicant: MAKITA CORPORATION
Inventor： Takeshi NISHIMIYA , Hirokatsu YAMAMOTO
CPC classification number: F16P3/00 , B24B23/028 , B25F5/00
Abstract: An electric power tool in one aspect of the present disclosure comprises a main body, a motor, a driver, a detector, and a kickback determiner. The kickback determiner determines that the main body is kicked back from a workpiece when an attitude change amount of the main body detected by the detector exceeds a preset kickback determination threshold during driving of the motor by the driver.
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公开(公告)号：US20170273239A1
公开(公告)日：2017-09-28
申请号：US15461777
申请日：2017-03-17
Applicant: MAKITA CORPORATION
Inventor： Tomoyuki OTA , Yoshifumi MORITA , Takeshi NISHIMIYA , Michisada YABUGUCHI
Abstract: A working machine according to one aspect of the present disclosure comprises an operation rod, a leading end unit, a rear end unit, and a drive permitter. The operation rod is configured to be transformable between an extended state and a non-extended state. The leading end unit is provided at one end of the operation rod. The leading end unit comprises a motor configured to drive a working element. The rear end unit is provided at the other end of the operation rod. The rear end unit comprises a controller configured to control driving of the motor. The drive permitter is configured to permit driving of the motor when the operation rod is in the extended state and not to permit driving of the motor when the operation rod is in the non-extended state.
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公开(公告)号：US20130119792A1
公开(公告)日：2013-05-16
申请号：US13741004
申请日：2013-01-14
Applicant: MAKITA CORPORATION
Inventor： Takeshi NISHIMIYA , Yutaka MATSUNAGA
CPC classification number: H02K7/145 , B25F5/008 , H01L2924/0002 , H02K11/33 , H05K1/0203 , H05K7/20463 , H05K2201/10166 , H05K2201/10371 , H05K2201/1056 , H01L2924/00
Abstract: An electrical power tool may include a switching device capable of controlling output power of a motor, a circuit board supporting the switching device, and a metal case receiving the circuit board. The switching device includes a conductive part and an insulated portion that is covered by an insulating covering material. The conductive part of the switching device contacts the circuit board. The insulated portion of the switching device contacts the metal case via the insulating covering material.
Abstract translation: 电动工具可以包括能够控制电动机的输出功率的开关装置，支撑开关装置的电路板以及接收电路板的金属壳体。 开关装置包括被绝缘覆盖材料覆盖的导电部分和绝缘部分。 开关装置的导电部分接触电路板。 开关装置的绝缘部分经由绝缘覆盖材料接触金属外壳。
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