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公开(公告)号：US20190084107A1
公开(公告)日：2019-03-21
申请号：US16131525
申请日：2018-09-14
Applicant: MAKITA CORPORATION
Inventor： Michisada YABUGUCHI
Abstract: A rotary tool or machine includes: an output shaft; a motor that rotates the output shaft; an operation part for commanding driving/stopping of the motor; and a control unit that controls the driving/stopping of the motor in accordance with commands from the operation part. The control unit is configured to generate a braking force in the motor or on the output shaft when the motor is to be stopped in proportion to a tightening force (torque) applied to the tool accessory when the motor is started up, such that the greater the tightening force (torque), the greater the braking force.
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公开(公告)号：US20040017119A1
公开(公告)日：2004-01-29
申请号：US10449331
申请日：2003-05-29
Inventor： Hirokatsu Yamamoto , Simoru Otogao
IPC: H02K011/00 , H02K009/00
Abstract: It is an object of the present teachings to provide a technique that rationalizes the structure of the brushless motor so as to save space in the power tool. According to the present teachings, a representative brushless motor utilized in a power tool may comprise a stator, a rotor and a cooling fan. The brushless motor is disposed within the power tool. The brushless motor is adapted to supply driving current to the stator to drive a tool bit of the power tool by rotating the rotor. The cooling fan is molded of a magnetic or conductive material so that the cooling fan also serves as a rotating position detector that detects the rotating position of the rotor with respect to the stator. Because the cooling fan may also have a function of rotating position detector of the rotor, the inner space of the power tool can be rationalized.
Abstract translation: 本发明的目的是提供一种使无刷电动机的结构合理化以便节省电动工具空间的技术。 根据本教导，在动力工具中使用的代表性的无刷电动机可以包括定子，转子和冷却风扇。 无刷电动机设置在动力工具内。 无刷电动机适于通过旋转转子向定子提供驱动电流以驱动电动工具的工具头。 冷却风扇由磁性或导电材料模制而成，使得冷却风扇也用作检测转子相对于定子的旋转位置的旋转位置检测器。 因为冷却风扇也可以具有旋转位置检测器的功能，因此可以使电动工具的内部空间合理化。
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公开(公告)号：US20250089960A1
公开(公告)日：2025-03-20
申请号：US18812233
申请日：2024-08-22
Applicant: MAKITA CORPORATION
Inventor： Keisuke YAMADA , Junpei HASE
Abstract: A cleaner includes: a main body housing; a dust collecting housing detachably attached to the main body housing and having an air-intake port; a suction assembly housed in the main body housing and configured to generate a suction force; a first filter unit housed in the dust collecting housing and including a first filter to which air sucked through the air-intake port is supplied and a first support member supporting the first filter; a filter support mechanism configured to fix the first filter unit to the main body housing at a fixed position in a rotation direction when the first filter unit is rotated in a normal rotation direction with respect to the main body housing; and a reverse rotation limiting mechanism configured to restrict the first filter unit from being rotated beyond a limit angle from the fixed position in a reverse rotation direction.
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公开(公告)号：US12251807B2
公开(公告)日：2025-03-18
申请号：US18141718
申请日：2023-05-01
Applicant: MAKITA CORPORATION
Inventor： Norikazu Baba , Shun Kuriki , Kazusa Fukuda , Masaya Nagao
Abstract: A driving tool includes a piston configured to move in a driving direction due to gas pressure, and a driver configured to move integrally with the piston to strike a fastener. The driver includes a plurality of rack teeth formed along a driving direction. The driving tool includes a wheel having a plurality of engaging portions to engage the plurality of rack teeth at its outer circumference. The driver is moved in a counter-driving direction as the wheel rotates. The plurality of engaging portions of the wheel includes at least one advancing/retracting engaging portion configured to move with respect to a shaft member of the wheel. The driver has a tooth groove between adjacent rack teeth of the plurality of rack teeth. One tooth groove is configured to receive the advancing/retracting engaging portion and has a depth deeper than at least one other tooth groove.
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公开(公告)号：US12246422B2
公开(公告)日：2025-03-11
申请号：US18227020
申请日：2023-07-27
Applicant: MAKITA CORPORATION
Inventor： Nobuyuki Hoshiyama , Masaya Nagao
Abstract: A driving tool has a configuration for preventing deviation of a driving posture of driving members from intended position during a use. The driving tool has a guide member supplied to a driving passage and a relief passage for an engagement portion of a driver to pass. The relief passage is therefore blocked by the guide member, stabilizing a driving posture of the driving member. The guide member is then pushed by a lowermost engagement portion of the driver so as to be retreaded from the relief passage, thereby allowing the engagement portion to move downward in the relief passage.
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Patent Agency Ranking
公开(公告)号：US20250076885A1
公开(公告)日：2025-03-06
申请号：US18800597
申请日：2024-08-12
Applicant: MAKITA CORPORATION
Inventor： Tatsuya YOSHIKAWA , Hirokatsu Yamamoto , Masahiro Kojima , Genki Toyoda
IPC: G05D1/244 , A01D34/00 , B60L53/36 , G05D1/661 , G05D105/15
Abstract: An autonomous movement system may include: a working robot configured to perform an operation while moving autonomously in a working area; a charging station configured to charge the working robot; a boundary wire defining the working area; and a station wire disposed at the charging station and electrically connected to the boundary wire. The working robot may include: a magnetic detecting unit configured to detect a magnetic field generated by the boundary wire and a magnetic field generated by the station wire; and a control unit configured to detect the station wire based on a detection result by the magnetic detecting unit. The charging station may include: a charging terminal configured to be electrically connected to the working robot; and a signal generator configured to supply an identical electric signal to the boundary wire and the station wire.
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公开(公告)号：US20250070623A1
公开(公告)日：2025-02-27
申请号：US18815134
申请日：2024-08-26
Applicant: MAKITA CORPORATION
Inventor： Yoshimasa FUKUOKA
Abstract: A motor used for an electric power tool includes a cylindrical-shaped stator, a rotor arranged on an inner circumferential side of the stator, and a sensor board arranged at an axial end of the stator. The sensor board includes a board main body located radially inside of the stator when viewed from an axial direction of the stator, and a leg protruding radially outward from the board main body toward the stator. The stator is exposed at least on one side of the leg in a circumferential direction of the stator. The motor further includes a sensor which is mountable on the leg so as to face the rotor and detects rotation of the rotor.
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公开(公告)号：US20250063992A1
公开(公告)日：2025-02-27
申请号：US18810048
申请日：2024-08-20
Applicant: MAKITA CORPORATION
Inventor： Ryo Sunazuka
Abstract: A working machine may include a first working machine part, a second working machine part, and a vibration damping member positioned between them. The vibration damping member may include a first mount portion configured to be attached to a first mount element disposed on one of the first working machine part and the second working machine part, a second mount portion offset in a first direction from the first mount portion and configured to be attached to a second mount element disposed on the other of the first working machine part and the second working machine part, a first connection portion connecting the first mount portion to the second mount portion, and a first recessed groove defined in a portion of an outer surface of the vibration damping member that corresponds to an outer surface of the first connection portion.
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公开(公告)号：US12233517B2
公开(公告)日：2025-02-25
申请号：US17982649
申请日：2022-11-08
Applicant: MAKITA CORPORATION
Inventor： Itsuku Kato
IPC: B25B23/147
Abstract: The electric work machine in one aspect of the present disclosure includes an output shaft, a motor, a current measuring circuit, and a controller. The current measuring circuit measures a current value, the current value corresponding to a magnitude of a drive current flowing through the motor. The controller sets a maximum value and a threshold. The controller calculates the correction value less than or equal to the maximum value so that the drive current decreases, in response to the current value having reached the threshold. The controller subtracts, from the control parameter, the correction value calculated, thereby correcting the control parameter. The controller drives the motor based on the control parameter corrected.
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公开(公告)号：US12226841B2
公开(公告)日：2025-02-18
申请号：US17678257
申请日：2022-02-23
Applicant: MAKITA CORPORATION
Inventor： Tomohiro Ukai , Shoichi Ishikawa
Abstract: A reciprocating cutting tool reduces dispersion of dust. The reciprocating cutting tool includes a reciprocation converter drivable by a motor, a rod-like slider connected to the reciprocation converter to be reciprocable, a blade holder at the front end of the slider to hold a blade, a power transmission housing housing the reciprocation converter and allowing the slider to protrude from its front end, a cover outward from the power transmission housing, and a fan rotatable together with a rotor in the motor. A first passage of cooling air from the fan is defined between the power transmission housing and the cover. The first passage branches into a second passage toward the blade holder and a third passage not toward the blade holder.
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