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公开(公告)号：US20230118075A1
公开(公告)日：2023-04-20
申请号：US17905477
申请日：2021-02-22
发明人： Masaaki MIYANAGA
摘要： A boring device according to one embodiment of the present invention includes: a cutting edge; a drive unit that rotationally drives the cutting edge; a feed flow path through which a cooling liquid is fed to the cutting edge; and a tube pump that forces the cooling liquid in the feed flow path to flow to the cutting edge. The tube pump includes a feed tube constituting a part of the feed flow path and a first pressing mechanism that presses the feed tube, and the first pressing mechanism is driven by the drive unit.
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公开(公告)号：US20220193876A1
公开(公告)日：2022-06-23
申请号：US17563466
申请日：2021-12-28
摘要： A power tool and method for recording and playing back a motor parameter. The power tool includes a housing, a motor, a trigger, and a controller. The trigger outputs an activation signal based on a user input. The controller receives a user mode selection signal indicating a selected mode. The controller enters the recording mode when the user mode selection indicates the recording mode, and records a motor parameter to generate a recorded motor parameter. The recorded motor parameter covers a first time period in which motor is operating in response to depression of the trigger, a second time period in which motor is inactive in response to release of the trigger, and a third time period in which motor is operating in response to another depression of the trigger. In the playback mode, the controller operates the motor based on the recorded motor parameter upon receiving the activation signal.
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公开(公告)号：US11364616B2
公开(公告)日：2022-06-21
申请号：US16625120
申请日：2018-06-20
申请人： Robert Bosch GmbH
发明人： Wolf Zahn , Florian Kneer , Josef Baumgartner
IPC分类号： B25F5/02 , B23B45/02 , H01M10/42 , H01M50/213
摘要： A rechargeable battery pack interface device includes: at least one connecting unit that is designed to detachably mechanically connect a rechargeable battery pack to a consumer, the mechanical connection being detachable using a relative movement of the rechargeable battery pack relative to the consumer; and a retaining unit that is designed in such a way that, in a non-activated state of the retaining unit, the mechanical connection is detachable using the relative movement of the rechargeable battery pack with respect to the consumer and, in an activated state of the retaining unit, the mechanical connection is detachable using another relative movement which differs from the relative movement.
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公开(公告)号：US20210205898A1
公开(公告)日：2021-07-08
申请号：US17055689
申请日：2019-07-18
申请人： APEX BRANDS, INC.
摘要： An example cordless portable power drill is provided. The drill may include a drill chassis, and a spindle mounted to the drill chassis. The spindle may be configured to drive a working bit. The drill may also include an exit port configured to direct a flow of a substance towards the working bit and an electric motor mounted to the drill chassis and operably configured to rotate the spindle. The drill may also include a pump mounted to the drill chassis. The pump may be fluidly coupled to the exit port, and the pump may be configured to pressurize the substance for output via the exit port to cool the working bit or remove debris created by the working bit through interaction with a workpiece.
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公开(公告)号：US11031770B2
公开(公告)日：2021-06-08
申请号：US16099219
申请日：2017-04-26
申请人： MAKITA CORPORATION
发明人： Yuta Izutsu , Katsuhito Fujinami , Akira Ito
摘要： An electric working machine in one aspect of the present disclosure includes a main current-path, a driving unit including a motor and at least one first semiconductor-switching-element, a controller, a bypass current-path, a second semiconductor-switching-element, and a switch driver. The main current-path is arranged between a positive electrode and a negative electrode of a battery. The driving unit is situated in the main current path. The bypass current-path is arranged in parallel with the driving unit. The second semiconductor-switching-element is situated in the bypass current-path. The switch driver causes the second semiconductor-switching-element to interrupt the bypass current-path in an event that a voltage value of a drive voltage applied to the driving unit is less than a threshold value, and causes the second semiconductor-switching-element to complete the bypass current-path in an event that the voltage value is equal to or greater than the threshold value.
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公开(公告)号：US11015759B2
公开(公告)日：2021-05-25
申请号：US16176310
申请日：2018-10-31
发明人： Yongan Sun , Ailong Zou
IPC分类号： F16P3/00 , B25F5/00 , B23B45/02 , H02P23/12 , H02P23/20 , B23D45/16 , B24B23/02 , B27B9/00 , B25D16/00 , B23D59/00 , F16P7/02 , B23Q11/04 , B25D17/24 , B25B21/00
摘要： A power tool and a detection method for the power tool. The detection method includes collecting acceleration data, via use of an acceleration sensor of the power tool, along a tangential direction of a rotation axis of a working portion of the power tool, determining whether a proportion of the collected acceleration data that exceeds a first acceleration threshold in a preset time window exceeds a preset value, and determining that a kickback occurs in the power tool when the proportion exceeds the preset value.
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公开(公告)号：US10967439B2
公开(公告)日：2021-04-06
申请号：US16328469
申请日：2018-07-12
发明人： Zisong Jiang , Jinyin Zuo , Xiaowei Xu , Huizhen Du , Duo Zhang
摘要： An electrical tool including: a cutter bit assembly, a driving mechanism for providing a power to the cutter bit assembly, and a flexible transmission mechanism, which is connected at one end thereof to the driving mechanism and connected at the other end thereof to the cutter bit assembly; the flexible transmission mechanism is twistable and bendable, and is configured to transmit the power provided by the driving mechanism to the cutter bit assembly.
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公开(公告)号：US10710220B2
公开(公告)日：2020-07-14
申请号：US15481838
申请日：2017-04-07
申请人： Black & Decker Inc.
IPC分类号： B25B21/00 , H02P6/00 , H02P23/26 , H02P6/15 , H02P6/32 , B23B45/02 , H02P6/08 , H02P6/20 , H02P6/24
摘要： A power tool is provided including a brushless DC (BLDC) motor, a rectifier that receives an alternative current from a power supply and outputs a rectified signal supplied to a DC power bus, and an inverter circuit having motor switches connected electrically between the DC power bus and the motor. A control module controls a switching operation of the power switches to regulate supply power from the power supply to the motor. The control module controls the switching operation so as to, within a half cycle of the AC power supply voltage waveform, increase current draw from the power supply from a first threshold at or after a first zero-crossing of the half cycle up to a second threshold, and reduce current draw from the power supply from the second threshold up to a third threshold at or prior to a second zero-crossing of the half cycle.
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公开(公告)号：US10693345B2
公开(公告)日：2020-06-23
申请号：US16422337
申请日：2019-05-24
发明人： Andrew T. Beyerl
摘要： A power tool with a combined printed circuit board (PCB) having a doughnut shape and located coaxially with a motor shaft. The combined PCB is secured to a heat sink on one end of the motor and a metal end piece is positioned on an opposite end of the motor. The metal end cap and heat sink are secured to one another via fasteners to provide a rigid coupling. A tabbed end piece is provided between the heat sink and the motor stator and is also secured into place via the fasteners. The tabbed end piece includes wire support tabs that provide strain relief to motor coil leads. The wire support tabs extend axially from circumferential locations of the tabbed end piece and include channels to guide the motor coil leads to solder contact points on the combined PCB.
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公开(公告)号：US10682750B2
公开(公告)日：2020-06-16
申请号：US15547119
申请日：2016-01-29
发明人： Hongfeng Zhong , Mingjian Xie , Shisong Zhang , Xiaoli Pang , Jian Wu , Jinping Zhang
摘要： The present invention provides a handheld power tool and an operation method thereof. The handheld power tool comprises a housing, a handle, a switch, a motor, an output shaft and a working component; the working component comprises at least two working chucks; the at least two working chucks respectively comprise a working shaft, the handheld power tool further comprises a control mechanism locking the working component relative to the position of the housing, the control mechanism comprises a control part adjacent to the switch and movably disposed relative to the housing, and the control part operably removes the position locking of the working component and controls the output shaft to be dis-matched and disconnected with one of the working shafts; and the position conversion of the working chucks can be finished by means of other body parts of an operator through one hand, and the operation is convenient and reliable.
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