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公开(公告)号：US11045861B2
公开(公告)日：2021-06-29
申请号：US16465120
申请日：2017-11-24
申请人： MAKITA CORPORATION
摘要： A fastening tool includes a bolt-gripping part, an anvil, a motor, and a control part. When the bolt-gripping part grips an end region of a shaft part and moves relative to the anvil in a first direction of a longitudinal-axis direction, the anvil presses a collar fitted onto the shaft part in a second direction opposite to the first direction of the longitudinal-axis direction and inward in a radial direction of the collar, so that a hollow part of the collar is crimped to a groove while the workpiece is clamped between the collar and a head part, whereby swaging of a fastener is completed while the end region remains integrated with the shaft part. The control part completes swaging of the fastener by terminating a movement of the bolt-gripping part in the first direction relative to the anvil based on driving current of the motor.
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公开(公告)号：US11065674B2
公开(公告)日：2021-07-20
申请号：US16465130
申请日：2017-11-24
申请人： MAKITA CORPORATION
摘要： A fastening tool includes a fastener-abutment part, a pin-gripping part, a motor, a driving mechanism, an input-accepting part and a motor-control part. The fastener-abutment part is configured to abut on a cylindrical part of a fastener. The pin-gripping part is configured to grip a portion of a pin of the fastener. The driving mechanism is configured to be driven by power of the motor to move the pin-gripping part rearward along a driving axis relative to the fastener-abutment part, thereby fastening a workpiece via the fastener. The input-accepting part is configured to accept setting information for a control condition of the motor inputted via an operation part configured to be externally operated by a user. The motor-control part is configured to control operation of the driving mechanism by controlling driving of the motor according to the control condition based on the setting information accepted by the input-accepting part.
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公开(公告)号：US10461674B2
公开(公告)日：2019-10-29
申请号：US15670242
申请日：2017-08-07
申请人： MAKITA CORPORATION
IPC分类号： H02P6/28 , H02P6/24 , H02P6/06 , H02P29/032 , B25F5/00
摘要： An electric working machine according to one aspect of the present disclosure comprises a motor, a speed setting unit, a load detection unit, a determination unit, and a parameter setting unit. The determination unit calculates an estimated value of a heat generation amount of the motor, and determines that the motor is in an overload operation state when the estimated value reaches a predetermined threshold. The parameter setting unit sets a parameter to be used for calculating the estimated value and/or the threshold in accordance with a rotation speed set by the speed setting unit.
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公开(公告)号：US11117185B2
公开(公告)日：2021-09-14
申请号：US16624161
申请日：2018-06-08
申请人： MAKITA CORPORATION
发明人： Michisada Yabuguchi , Yuki Kawai , Hiroki Ikuta
摘要： A fastening tool includes a housing, a fastener-abutment part, a pin-gripping part held within the fastener-abutment part to be movable in a front-rear direction relative to the fastener-abutment part, a detection-target part provided to move together with the pin-gripping part, a detection device configured to detect the detection-target part, a motor, and a driving mechanism configured to move the pin-gripping part rearward from an initial position relative to the fastener-abutment part. The driving mechanism is further configured to move the pin-gripping part forward relative to the fastener-abutment part so as to return the pin-gripping part to the initial position based on a detection result of the detection device. The fastening tool is configured such that a first moving distance is adjustable, the first moving distance being a distance by which the pin-gripping part is moved from a detection position to the initial position.
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公开(公告)号：US11007565B2
公开(公告)日：2021-05-18
申请号：US16476249
申请日：2018-01-09
申请人： MAKITA CORPORATION
摘要： A fastening tool using a fastener of a type which is configured such that swaging is completed while an end region of a shaft part of a bolt remains integrated with the shaft part, and more particularly, a technique that may help provide a compact device structure while facilitating output management required for swaging, in the fastening tool. The fastening tool is configured to fasten a workpiece with a bolt and a collar without breaking a shaft part of the bolt, and a control part performs swaging operation while controlling the driving current of a motor to become a specified target current value and completes the swaging operation based on rotation speed of the motor.
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公开(公告)号：US10779468B2
公开(公告)日：2020-09-22
申请号：US15461777
申请日：2017-03-17
申请人： MAKITA CORPORATION
摘要： 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：US10243488B2
公开(公告)日：2019-03-26
申请号：US15815960
申请日：2017-11-17
申请人： MAKITA CORPORATION
发明人： Michisada Yabuguchi
IPC分类号： H02K7/14 , H02P3/22 , H02P6/14 , H02P6/24 , H02P29/024
摘要： An electric working machine in one aspect of the present disclosure includes a motor, a first switching element, a second switching element, a rectifier element, and a controller. The controller is configured to perform a stop control, in which completion of a first current path is maintained via the first switching element for a specified period and a second current path is interrupted via the second switching element, in response to satisfaction of a stop condition for stopping power supply from a power source to the motor during rotation of the motor.
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