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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：US20250091145A1
公开(公告)日：2025-03-20
申请号：US18829892
申请日：2024-09-10
Applicant: MAKITA CORPORATION
Inventor： Tomohiro UKAI
Abstract: A blade for a reciprocating saw includes: an elongated body having one end that is detachably attachable to the reciprocating saw; and at least one hard tip having a greater hardness than the body and being bonded to the body. The body includes a cutting edge part having a plurality of teeth arranged along the length direction and a back part extending along the length direction on the side opposite to the cutting edge part in a width direction. The cutting edge part includes at least one curved part. The curved part(s) is (are each) configured so that a cutting edge line, which is a line connecting the tips of a plurality of teeth disposed along the curved part(s), curves in a concave manner toward the back part. The at least one hard tip is bonded to at least one of the plurality of teeth.
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公开(公告)号：US20250081895A1
公开(公告)日：2025-03-13
申请号：US18829539
申请日：2024-09-10
Applicant: MAKITA CORPORATION
Inventor： Koji HANEDA , Kazuya KATO , Tomoya KUNISHIMA
Abstract: A working machine system may include a working machine, a working machine holder, and a detection mechanism configured to detect whether the working machine is held by the working machine holder. The working machine may be configured to be switched between a first state and a second state in which a predetermined switching manipulation is required to switch to the first state. When the detection mechanism detects that the working machine is not held, the working machine may switch from the first state to the second state in response to the working machine being unattended for a first predetermined time period. When the detection mechanism detects that the working machine is held, the working machine may switch from the first state to the second state in response to the working machine being unattended for a second predetermined time period which is longer than the first predetermined time period.
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公开(公告)号：US12246427B2
公开(公告)日：2025-03-11
申请号：US17667889
申请日：2022-02-09
Applicant: MAKITA CORPORATION
Inventor： Yoshitaka Machida , Kazuki Nakagawa
Abstract: The power tool includes: a handle; a biasing member for biasing the handle in a direction away from a final output shaft in the axial direction; at least one guiding member disposed between a housing and a first part of the handle so as to extend in the axial direction and configured to slidably guide relative movement between the handle and the housing; and at least one elastic member disposed at least one of between the at least one guiding member and the housing and between the at least one guiding member and the first part of the handle. The at least one guiding member is disposed so as to be movable relative to the housing or the handle in a crossing direction that crosses the axial direction by elastic deformation of the at least one elastic member in the crossing direction.
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公开(公告)号：USD1064474S1
公开(公告)日：2025-02-25
申请号：US29874224
申请日：2023-04-17
Applicant: MAKITA CORPORATION
Designer： Xing Xu , Sheng Nan Wang
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Patent Agency Ranking
公开(公告)号：US12237738B2
公开(公告)日：2025-02-25
申请号：US17924430
申请日：2021-04-16
Applicant: MAKITA CORPORATION
Inventor： Kei Kouda
IPC: H02K21/16 , H02K1/14 , H02K1/276 , H02K7/14 , H02K9/06 , H02K11/215 , H02K11/33 , H02K15/022
Abstract: An electric work machine includes a first brushless motor including a first stator and a first rotor combined with the first stator, and a controller. The first stator includes a first stator core and multiple first coils wound around multiple teeth on the stator core. The controller magnetizes the teeth to cause the first rotor to rotate about a rotation axis. In a plane orthogonal to the rotation axis, the first stator core has the same shape as a second stator core in a second stator used in a second brushless motor in another electric work machine. The first rotor can be combined with the second stator. The first rotor has a different number of poles from a second rotor used in the second brushless motor.
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公开(公告)号：US12237731B2
公开(公告)日：2025-02-25
申请号：US17418088
申请日：2019-12-20
Applicant: MAKITA CORPORATION
Inventor： Akira Niwa , Kei Kouda
Abstract: An electric work machine in one aspect of the present disclosure includes a motor, a driver, and a temperature sensor. The motor includes a stator, and a rotor. The stator includes a cylindrical body, a tooth, and a coil. The cylindrical body includes a first inner circumferential surface. The tooth is disposed to stand on the first inner circumferential surface. The coil is wound around the tooth. The coil generates a magnetic force in response to receiving an electric power. The temperature sensor is installed in/on the tooth.
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公开(公告)号：US12235105B2
公开(公告)日：2025-02-25
申请号：US17364506
申请日：2021-06-30
Applicant: MAKITA CORPORATION
Inventor： Manami Honoki , Yoichiro Koike , Masafumi Noda
Abstract: A laser marker according to one aspect of the present disclosure includes: a laser emitter; an information reception circuit; a measuring circuit; and a disabling circuit. The measuring circuit starts to measure an elapsed time in response to the information reception circuit receiving an enabled time. The disabling circuit disables the laser marker for operating in response to a length of the elapsed time reaching or having reached a length of the enabled time.
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公开(公告)号：US20250049276A1
公开(公告)日：2025-02-13
申请号：US18795568
申请日：2024-08-06
Applicant: MAKITA CORPORATION
Inventor： Bang WANG , Xiaongfei Wen , Yoshiro Tada , Takahiro Nishikawa
Abstract: A dust collecting attachment includes a dust suction portion and a main body. The main body has a dust collection passage communicated with the dust suction portion. The dust suction portion has a negative pressure by exerting a suction force to the dust collection passage from a hose. The dust suction portion includes an inner pipe through which a tip tool passes, a first dust suction flow passage, and a second dust suction flow passage. The first dust suction flow passage opens a first suction opening to a side of a workpiece in an outside in a radial direction of the inner pipe and is communicated with the dust collection passage. The second dust suction flow passage opens a second suction opening to an opposite side of the workpiece in the outside in the radial direction of the inner pipe and is communicated with the dust collection passage.
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公开(公告)号：US20250046929A1
公开(公告)日：2025-02-06
申请号：US18916024
申请日：2024-10-15
Applicant: MAKITA CORPORATION
Inventor： Tatsuya NAGAHAMA
IPC: H01M50/213 , H01M10/42 , H01M50/10 , H01M50/30 , H01M50/543 , H01M50/572
Abstract: A battery pack includes at least one rechargeable battery cell disposed within an outer case. The outer case has an upper surface having at least one terminal opening that exposes at least one terminal electrically connected to the at least one rechargeable battery cell; a bottom wall; side surfaces extending perpendicularly from the bottom wall; and four protruding portions respectively protruding downward from four corners of the bottom wall. The four protruding portions are configured such that, when the four protruding portions of the battery pack contact a flat surface, only the four protruding portions contact the flat surface and a central portion of an exterior surface of the bottom wall does not contact the flat surface.
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